13c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning/* 23c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning * smscufx.c -- Framebuffer driver for SMSC UFX USB controller 33c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning * 43c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning * Copyright (C) 2011 Steve Glendinning <steve.glendinning@smsc.com> 53c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning * Copyright (C) 2009 Roberto De Ioris <roberto@unbit.it> 63c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning * Copyright (C) 2009 Jaya Kumar <jayakumar.lkml@gmail.com> 73c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning * Copyright (C) 2009 Bernie Thompson <bernie@plugable.com> 83c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning * 93c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning * This file is subject to the terms and conditions of the GNU General Public 103c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning * License v2. See the file COPYING in the main directory of this archive for 113c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning * more details. 123c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning * 133c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning * Based on udlfb, with work from Florian Echtler, Henrik Bjerregaard Pedersen, 143c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning * and others. 153c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning * 163c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning * Works well with Bernie Thompson's X DAMAGE patch to xf86-video-fbdev 173c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning * available from http://git.plugable.com 183c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning * 193c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning * Layout is based on skeletonfb by James Simmons and Geert Uytterhoeven, 203c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning * usb-skeleton by GregKH. 213c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning */ 223c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 233c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt 243c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 253c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning#include <linux/module.h> 263c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning#include <linux/kernel.h> 273c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning#include <linux/init.h> 283c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning#include <linux/usb.h> 293c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning#include <linux/uaccess.h> 303c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning#include <linux/mm.h> 313c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning#include <linux/fb.h> 323c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning#include <linux/vmalloc.h> 333c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning#include <linux/slab.h> 343c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning#include <linux/delay.h> 353c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning#include "edid.h" 363c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 373c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning#define check_warn(status, fmt, args...) \ 383c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning ({ if (status < 0) pr_warn(fmt, ##args); }) 393c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 403c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning#define check_warn_return(status, fmt, args...) \ 413c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning ({ if (status < 0) { pr_warn(fmt, ##args); return status; } }) 423c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 433c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning#define check_warn_goto_error(status, fmt, args...) \ 443c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning ({ if (status < 0) { pr_warn(fmt, ##args); goto error; } }) 453c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 463c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning#define all_bits_set(x, bits) (((x) & (bits)) == (bits)) 473c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 483c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning#define USB_VENDOR_REQUEST_WRITE_REGISTER 0xA0 493c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning#define USB_VENDOR_REQUEST_READ_REGISTER 0xA1 503c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 513c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning/* 523c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning * TODO: Propose standard fb.h ioctl for reporting damage, 533c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning * using _IOWR() and one of the existing area structs from fb.h 543c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning * Consider these ioctls deprecated, but they're still used by the 553c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning * DisplayLink X server as yet - need both to be modified in tandem 563c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning * when new ioctl(s) are ready. 573c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning */ 583c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning#define UFX_IOCTL_RETURN_EDID (0xAD) 593c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning#define UFX_IOCTL_REPORT_DAMAGE (0xAA) 603c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 613c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning/* -BULK_SIZE as per usb-skeleton. Can we get full page and avoid overhead? */ 623c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning#define BULK_SIZE (512) 633c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning#define MAX_TRANSFER (PAGE_SIZE*16 - BULK_SIZE) 643c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning#define WRITES_IN_FLIGHT (4) 653c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 663c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning#define GET_URB_TIMEOUT (HZ) 673c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning#define FREE_URB_TIMEOUT (HZ*2) 683c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 693c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning#define BPP 2 703c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 713c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning#define UFX_DEFIO_WRITE_DELAY 5 /* fb_deferred_io.delay in jiffies */ 723c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning#define UFX_DEFIO_WRITE_DISABLE (HZ*60) /* "disable" with long delay */ 733c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 743c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinningstruct dloarea { 753c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning int x, y; 763c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning int w, h; 773c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning}; 783c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 793c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinningstruct urb_node { 803c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning struct list_head entry; 813c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning struct ufx_data *dev; 823c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning struct delayed_work release_urb_work; 833c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning struct urb *urb; 843c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning}; 853c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 863c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinningstruct urb_list { 873c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning struct list_head list; 883c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning spinlock_t lock; 893c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning struct semaphore limit_sem; 903c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning int available; 913c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning int count; 923c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning size_t size; 933c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning}; 943c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 953c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinningstruct ufx_data { 963c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning struct usb_device *udev; 973c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning struct device *gdev; /* &udev->dev */ 983c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning struct fb_info *info; 993c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning struct urb_list urbs; 1003c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning struct kref kref; 1013c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning int fb_count; 1023c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning bool virtualized; /* true when physical usb device not present */ 1033c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning struct delayed_work free_framebuffer_work; 1043c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning atomic_t usb_active; /* 0 = update virtual buffer, but no usb traffic */ 1053c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning atomic_t lost_pixels; /* 1 = a render op failed. Need screen refresh */ 106261e767628bb5971b9032439818237cc8511ea94Dan Carpenter u8 *edid; /* null until we read edid from hw or get from sysfs */ 1073c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning size_t edid_size; 1083c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning u32 pseudo_palette[256]; 1093c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning}; 1103c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 1113c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinningstatic struct fb_fix_screeninfo ufx_fix = { 1123c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning .id = "smscufx", 1133c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning .type = FB_TYPE_PACKED_PIXELS, 1143c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning .visual = FB_VISUAL_TRUECOLOR, 1153c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning .xpanstep = 0, 1163c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning .ypanstep = 0, 1173c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning .ywrapstep = 0, 1183c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning .accel = FB_ACCEL_NONE, 1193c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning}; 1203c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 1213c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinningstatic const u32 smscufx_info_flags = FBINFO_DEFAULT | FBINFO_READS_FAST | 1223c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning FBINFO_VIRTFB | FBINFO_HWACCEL_IMAGEBLIT | FBINFO_HWACCEL_FILLRECT | 1233c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning FBINFO_HWACCEL_COPYAREA | FBINFO_MISC_ALWAYS_SETPAR; 1243c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 1253c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinningstatic struct usb_device_id id_table[] = { 1263c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning {USB_DEVICE(0x0424, 0x9d00),}, 1273c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning {USB_DEVICE(0x0424, 0x9d01),}, 1283c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning {}, 1293c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning}; 1303c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve GlendinningMODULE_DEVICE_TABLE(usb, id_table); 1313c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 1323c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning/* module options */ 13390ab5ee94171b3e28de6bb42ee30b527014e0be7Rusty Russellstatic bool console; /* Optionally allow fbcon to consume first framebuffer */ 13490ab5ee94171b3e28de6bb42ee30b527014e0be7Rusty Russellstatic bool fb_defio = true; /* Optionally enable fb_defio mmap support */ 1353c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 1363c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning/* ufx keeps a list of urbs for efficient bulk transfers */ 1373c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinningstatic void ufx_urb_completion(struct urb *urb); 1383c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinningstatic struct urb *ufx_get_urb(struct ufx_data *dev); 1393c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinningstatic int ufx_submit_urb(struct ufx_data *dev, struct urb * urb, size_t len); 1403c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinningstatic int ufx_alloc_urb_list(struct ufx_data *dev, int count, size_t size); 1413c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinningstatic void ufx_free_urb_list(struct ufx_data *dev); 1423c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 1433c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning/* reads a control register */ 1443c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinningstatic int ufx_reg_read(struct ufx_data *dev, u32 index, u32 *data) 1453c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning{ 1463c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning u32 *buf = kmalloc(4, GFP_KERNEL); 1473c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning int ret; 1483c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 1493c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning BUG_ON(!dev); 1503c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 1513c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning if (!buf) 1523c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning return -ENOMEM; 1533c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 1543c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning ret = usb_control_msg(dev->udev, usb_rcvctrlpipe(dev->udev, 0), 1553c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning USB_VENDOR_REQUEST_READ_REGISTER, 1563c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE, 1573c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 00, index, buf, 4, USB_CTRL_GET_TIMEOUT); 1583c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 1593c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning le32_to_cpus(buf); 1603c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning *data = *buf; 1613c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning kfree(buf); 1623c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 1633c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning if (unlikely(ret < 0)) 1643c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning pr_warn("Failed to read register index 0x%08x\n", index); 1653c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 1663c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning return ret; 1673c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning} 1683c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 1693c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning/* writes a control register */ 1703c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinningstatic int ufx_reg_write(struct ufx_data *dev, u32 index, u32 data) 1713c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning{ 1723c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning u32 *buf = kmalloc(4, GFP_KERNEL); 1733c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning int ret; 1743c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 1753c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning BUG_ON(!dev); 1763c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 1773c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning if (!buf) 1783c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning return -ENOMEM; 1793c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 1803c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning *buf = data; 1813c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning cpu_to_le32s(buf); 1823c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 1833c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning ret = usb_control_msg(dev->udev, usb_sndctrlpipe(dev->udev, 0), 1843c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning USB_VENDOR_REQUEST_WRITE_REGISTER, 1853c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE, 1863c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 00, index, buf, 4, USB_CTRL_SET_TIMEOUT); 1873c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 1883c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning kfree(buf); 1893c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 1903c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning if (unlikely(ret < 0)) 1913c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning pr_warn("Failed to write register index 0x%08x with value " 1923c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning "0x%08x\n", index, data); 1933c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 1943c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning return ret; 1953c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning} 1963c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 1973c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinningstatic int ufx_reg_clear_and_set_bits(struct ufx_data *dev, u32 index, 1983c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning u32 bits_to_clear, u32 bits_to_set) 1993c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning{ 2003c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning u32 data; 2013c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning int status = ufx_reg_read(dev, index, &data); 2023c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning check_warn_return(status, "ufx_reg_clear_and_set_bits error reading " 2033c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning "0x%x", index); 2043c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 2053c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning data &= (~bits_to_clear); 2063c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning data |= bits_to_set; 2073c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 2083c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning status = ufx_reg_write(dev, index, data); 2093c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning check_warn_return(status, "ufx_reg_clear_and_set_bits error writing " 2103c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning "0x%x", index); 2113c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 2123c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning return 0; 2133c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning} 2143c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 2153c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinningstatic int ufx_reg_set_bits(struct ufx_data *dev, u32 index, u32 bits) 2163c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning{ 2173c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning return ufx_reg_clear_and_set_bits(dev, index, 0, bits); 2183c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning} 2193c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 2203c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinningstatic int ufx_reg_clear_bits(struct ufx_data *dev, u32 index, u32 bits) 2213c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning{ 2223c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning return ufx_reg_clear_and_set_bits(dev, index, bits, 0); 2233c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning} 2243c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 2253c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinningstatic int ufx_lite_reset(struct ufx_data *dev) 2263c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning{ 2273c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning int status; 2283c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning u32 value; 2293c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 2303c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning status = ufx_reg_write(dev, 0x3008, 0x00000001); 2313c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning check_warn_return(status, "ufx_lite_reset error writing 0x3008"); 2323c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 2333c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning status = ufx_reg_read(dev, 0x3008, &value); 2343c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning check_warn_return(status, "ufx_lite_reset error reading 0x3008"); 2353c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 2363c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning return (value == 0) ? 0 : -EIO; 2373c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning} 2383c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 2393c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning/* If display is unblanked, then blank it */ 2403c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinningstatic int ufx_blank(struct ufx_data *dev, bool wait) 2413c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning{ 2423c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning u32 dc_ctrl, dc_sts; 2433c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning int i; 2443c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 2453c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning int status = ufx_reg_read(dev, 0x2004, &dc_sts); 2463c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning check_warn_return(status, "ufx_blank error reading 0x2004"); 2473c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 2483c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning status = ufx_reg_read(dev, 0x2000, &dc_ctrl); 2493c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning check_warn_return(status, "ufx_blank error reading 0x2000"); 2503c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 2513c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning /* return success if display is already blanked */ 2523c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning if ((dc_sts & 0x00000100) || (dc_ctrl & 0x00000100)) 2533c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning return 0; 2543c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 2553c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning /* request the DC to blank the display */ 2563c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning dc_ctrl |= 0x00000100; 2573c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning status = ufx_reg_write(dev, 0x2000, dc_ctrl); 2583c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning check_warn_return(status, "ufx_blank error writing 0x2000"); 2593c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 2603c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning /* return success immediately if we don't have to wait */ 2613c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning if (!wait) 2623c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning return 0; 2633c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 2643c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning for (i = 0; i < 250; i++) { 2653c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning status = ufx_reg_read(dev, 0x2004, &dc_sts); 2663c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning check_warn_return(status, "ufx_blank error reading 0x2004"); 2673c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 2683c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning if (dc_sts & 0x00000100) 2693c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning return 0; 2703c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning } 2713c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 2723c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning /* timed out waiting for display to blank */ 2733c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning return -EIO; 2743c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning} 2753c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 2763c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning/* If display is blanked, then unblank it */ 2773c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinningstatic int ufx_unblank(struct ufx_data *dev, bool wait) 2783c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning{ 2793c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning u32 dc_ctrl, dc_sts; 2803c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning int i; 2813c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 2823c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning int status = ufx_reg_read(dev, 0x2004, &dc_sts); 2833c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning check_warn_return(status, "ufx_unblank error reading 0x2004"); 2843c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 2853c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning status = ufx_reg_read(dev, 0x2000, &dc_ctrl); 2863c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning check_warn_return(status, "ufx_unblank error reading 0x2000"); 2873c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 2883c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning /* return success if display is already unblanked */ 2893c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning if (((dc_sts & 0x00000100) == 0) || ((dc_ctrl & 0x00000100) == 0)) 2903c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning return 0; 2913c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 2923c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning /* request the DC to unblank the display */ 2933c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning dc_ctrl &= ~0x00000100; 2943c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning status = ufx_reg_write(dev, 0x2000, dc_ctrl); 2953c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning check_warn_return(status, "ufx_unblank error writing 0x2000"); 2963c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 2973c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning /* return success immediately if we don't have to wait */ 2983c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning if (!wait) 2993c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning return 0; 3003c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 3013c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning for (i = 0; i < 250; i++) { 3023c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning status = ufx_reg_read(dev, 0x2004, &dc_sts); 3033c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning check_warn_return(status, "ufx_unblank error reading 0x2004"); 3043c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 3053c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning if ((dc_sts & 0x00000100) == 0) 3063c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning return 0; 3073c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning } 3083c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 3093c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning /* timed out waiting for display to unblank */ 3103c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning return -EIO; 3113c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning} 3123c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 3133c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning/* If display is enabled, then disable it */ 3143c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinningstatic int ufx_disable(struct ufx_data *dev, bool wait) 3153c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning{ 3163c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning u32 dc_ctrl, dc_sts; 3173c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning int i; 3183c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 3193c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning int status = ufx_reg_read(dev, 0x2004, &dc_sts); 3203c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning check_warn_return(status, "ufx_disable error reading 0x2004"); 3213c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 3223c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning status = ufx_reg_read(dev, 0x2000, &dc_ctrl); 3233c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning check_warn_return(status, "ufx_disable error reading 0x2000"); 3243c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 3253c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning /* return success if display is already disabled */ 3263c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning if (((dc_sts & 0x00000001) == 0) || ((dc_ctrl & 0x00000001) == 0)) 3273c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning return 0; 3283c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 3293c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning /* request the DC to disable the display */ 3303c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning dc_ctrl &= ~(0x00000001); 3313c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning status = ufx_reg_write(dev, 0x2000, dc_ctrl); 3323c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning check_warn_return(status, "ufx_disable error writing 0x2000"); 3333c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 3343c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning /* return success immediately if we don't have to wait */ 3353c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning if (!wait) 3363c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning return 0; 3373c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 3383c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning for (i = 0; i < 250; i++) { 3393c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning status = ufx_reg_read(dev, 0x2004, &dc_sts); 3403c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning check_warn_return(status, "ufx_disable error reading 0x2004"); 3413c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 3423c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning if ((dc_sts & 0x00000001) == 0) 3433c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning return 0; 3443c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning } 3453c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 3463c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning /* timed out waiting for display to disable */ 3473c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning return -EIO; 3483c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning} 3493c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 3503c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning/* If display is disabled, then enable it */ 3513c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinningstatic int ufx_enable(struct ufx_data *dev, bool wait) 3523c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning{ 3533c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning u32 dc_ctrl, dc_sts; 3543c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning int i; 3553c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 3563c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning int status = ufx_reg_read(dev, 0x2004, &dc_sts); 3573c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning check_warn_return(status, "ufx_enable error reading 0x2004"); 3583c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 3593c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning status = ufx_reg_read(dev, 0x2000, &dc_ctrl); 3603c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning check_warn_return(status, "ufx_enable error reading 0x2000"); 3613c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 3623c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning /* return success if display is already enabled */ 3633c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning if ((dc_sts & 0x00000001) || (dc_ctrl & 0x00000001)) 3643c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning return 0; 3653c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 3663c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning /* request the DC to enable the display */ 3673c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning dc_ctrl |= 0x00000001; 3683c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning status = ufx_reg_write(dev, 0x2000, dc_ctrl); 3693c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning check_warn_return(status, "ufx_enable error writing 0x2000"); 3703c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 3713c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning /* return success immediately if we don't have to wait */ 3723c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning if (!wait) 3733c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning return 0; 3743c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 3753c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning for (i = 0; i < 250; i++) { 3763c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning status = ufx_reg_read(dev, 0x2004, &dc_sts); 3773c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning check_warn_return(status, "ufx_enable error reading 0x2004"); 3783c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 3793c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning if (dc_sts & 0x00000001) 3803c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning return 0; 3813c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning } 3823c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 3833c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning /* timed out waiting for display to enable */ 3843c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning return -EIO; 3853c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning} 3863c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 3873c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinningstatic int ufx_config_sys_clk(struct ufx_data *dev) 3883c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning{ 3893c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning int status = ufx_reg_write(dev, 0x700C, 0x8000000F); 3903c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning check_warn_return(status, "error writing 0x700C"); 3913c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 3923c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning status = ufx_reg_write(dev, 0x7014, 0x0010024F); 3933c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning check_warn_return(status, "error writing 0x7014"); 3943c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 3953c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning status = ufx_reg_write(dev, 0x7010, 0x00000000); 3963c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning check_warn_return(status, "error writing 0x7010"); 3973c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 3983c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning status = ufx_reg_clear_bits(dev, 0x700C, 0x0000000A); 3993c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning check_warn_return(status, "error clearing PLL1 bypass in 0x700C"); 4003c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning msleep(1); 4013c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 4023c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning status = ufx_reg_clear_bits(dev, 0x700C, 0x80000000); 4033c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning check_warn_return(status, "error clearing output gate in 0x700C"); 4043c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 4053c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning return 0; 4063c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning} 4073c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 4083c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinningstatic int ufx_config_ddr2(struct ufx_data *dev) 4093c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning{ 4103c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning int status, i = 0; 4113c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning u32 tmp; 4123c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 4133c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning status = ufx_reg_write(dev, 0x0004, 0x001F0F77); 4143c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning check_warn_return(status, "error writing 0x0004"); 4153c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 4163c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning status = ufx_reg_write(dev, 0x0008, 0xFFF00000); 4173c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning check_warn_return(status, "error writing 0x0008"); 4183c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 4193c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning status = ufx_reg_write(dev, 0x000C, 0x0FFF2222); 4203c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning check_warn_return(status, "error writing 0x000C"); 4213c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 4223c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning status = ufx_reg_write(dev, 0x0010, 0x00030814); 4233c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning check_warn_return(status, "error writing 0x0010"); 4243c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 4253c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning status = ufx_reg_write(dev, 0x0014, 0x00500019); 4263c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning check_warn_return(status, "error writing 0x0014"); 4273c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 4283c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning status = ufx_reg_write(dev, 0x0018, 0x020D0F15); 4293c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning check_warn_return(status, "error writing 0x0018"); 4303c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 4313c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning status = ufx_reg_write(dev, 0x001C, 0x02532305); 4323c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning check_warn_return(status, "error writing 0x001C"); 4333c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 4343c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning status = ufx_reg_write(dev, 0x0020, 0x0B030905); 4353c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning check_warn_return(status, "error writing 0x0020"); 4363c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 4373c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning status = ufx_reg_write(dev, 0x0024, 0x00000827); 4383c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning check_warn_return(status, "error writing 0x0024"); 4393c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 4403c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning status = ufx_reg_write(dev, 0x0028, 0x00000000); 4413c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning check_warn_return(status, "error writing 0x0028"); 4423c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 4433c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning status = ufx_reg_write(dev, 0x002C, 0x00000042); 4443c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning check_warn_return(status, "error writing 0x002C"); 4453c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 4463c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning status = ufx_reg_write(dev, 0x0030, 0x09520000); 4473c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning check_warn_return(status, "error writing 0x0030"); 4483c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 4493c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning status = ufx_reg_write(dev, 0x0034, 0x02223314); 4503c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning check_warn_return(status, "error writing 0x0034"); 4513c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 4523c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning status = ufx_reg_write(dev, 0x0038, 0x00430043); 4533c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning check_warn_return(status, "error writing 0x0038"); 4543c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 4553c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning status = ufx_reg_write(dev, 0x003C, 0xF00F000F); 4563c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning check_warn_return(status, "error writing 0x003C"); 4573c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 4583c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning status = ufx_reg_write(dev, 0x0040, 0xF380F00F); 4593c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning check_warn_return(status, "error writing 0x0040"); 4603c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 4613c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning status = ufx_reg_write(dev, 0x0044, 0xF00F0496); 4623c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning check_warn_return(status, "error writing 0x0044"); 4633c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 4643c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning status = ufx_reg_write(dev, 0x0048, 0x03080406); 4653c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning check_warn_return(status, "error writing 0x0048"); 4663c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 4673c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning status = ufx_reg_write(dev, 0x004C, 0x00001000); 4683c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning check_warn_return(status, "error writing 0x004C"); 4693c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 4703c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning status = ufx_reg_write(dev, 0x005C, 0x00000007); 4713c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning check_warn_return(status, "error writing 0x005C"); 4723c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 4733c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning status = ufx_reg_write(dev, 0x0100, 0x54F00012); 4743c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning check_warn_return(status, "error writing 0x0100"); 4753c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 4763c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning status = ufx_reg_write(dev, 0x0104, 0x00004012); 4773c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning check_warn_return(status, "error writing 0x0104"); 4783c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 4793c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning status = ufx_reg_write(dev, 0x0118, 0x40404040); 4803c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning check_warn_return(status, "error writing 0x0118"); 4813c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 4823c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning status = ufx_reg_write(dev, 0x0000, 0x00000001); 4833c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning check_warn_return(status, "error writing 0x0000"); 4843c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 4853c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning while (i++ < 500) { 4863c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning status = ufx_reg_read(dev, 0x0000, &tmp); 4873c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning check_warn_return(status, "error reading 0x0000"); 4883c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 4893c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning if (all_bits_set(tmp, 0xC0000000)) 4903c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning return 0; 4913c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning } 4923c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 4933c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning pr_err("DDR2 initialisation timed out, reg 0x0000=0x%08x", tmp); 4943c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning return -ETIMEDOUT; 4953c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning} 4963c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 4973c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinningstruct pll_values { 4983c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning u32 div_r0; 4993c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning u32 div_f0; 5003c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning u32 div_q0; 5013c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning u32 range0; 5023c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning u32 div_r1; 5033c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning u32 div_f1; 5043c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning u32 div_q1; 5053c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning u32 range1; 5063c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning}; 5073c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 5083c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinningstatic u32 ufx_calc_range(u32 ref_freq) 5093c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning{ 5103c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning if (ref_freq >= 88000000) 5113c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning return 7; 5123c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 5133c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning if (ref_freq >= 54000000) 5143c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning return 6; 5153c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 5163c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning if (ref_freq >= 34000000) 5173c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning return 5; 5183c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 5193c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning if (ref_freq >= 21000000) 5203c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning return 4; 5213c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 5223c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning if (ref_freq >= 13000000) 5233c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning return 3; 5243c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 5253c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning if (ref_freq >= 8000000) 5263c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning return 2; 5273c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 5283c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning return 1; 5293c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning} 5303c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 5313c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning/* calculates PLL divider settings for a desired target frequency */ 5323c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinningstatic void ufx_calc_pll_values(const u32 clk_pixel_pll, struct pll_values *asic_pll) 5333c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning{ 5343c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning const u32 ref_clk = 25000000; 5353c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning u32 div_r0, div_f0, div_q0, div_r1, div_f1, div_q1; 5363c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning u32 min_error = clk_pixel_pll; 5373c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 5383c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning for (div_r0 = 1; div_r0 <= 32; div_r0++) { 5393c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning u32 ref_freq0 = ref_clk / div_r0; 5403c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning if (ref_freq0 < 5000000) 5413c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning break; 5423c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 5433c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning if (ref_freq0 > 200000000) 5443c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning continue; 5453c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 5463c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning for (div_f0 = 1; div_f0 <= 256; div_f0++) { 5473c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning u32 vco_freq0 = ref_freq0 * div_f0; 5483c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 5493c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning if (vco_freq0 < 350000000) 5503c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning continue; 5513c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 5523c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning if (vco_freq0 > 700000000) 5533c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning break; 5543c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 5553c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning for (div_q0 = 0; div_q0 < 7; div_q0++) { 5563c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning u32 pllout_freq0 = vco_freq0 / (1 << div_q0); 5573c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 5583c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning if (pllout_freq0 < 5000000) 5593c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning break; 5603c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 5613c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning if (pllout_freq0 > 200000000) 5623c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning continue; 5633c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 5643c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning for (div_r1 = 1; div_r1 <= 32; div_r1++) { 5653c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning u32 ref_freq1 = pllout_freq0 / div_r1; 5663c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 5673c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning if (ref_freq1 < 5000000) 5683c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning break; 5693c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 5703c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning for (div_f1 = 1; div_f1 <= 256; div_f1++) { 5713c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning u32 vco_freq1 = ref_freq1 * div_f1; 5723c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 5733c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning if (vco_freq1 < 350000000) 5743c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning continue; 5753c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 5763c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning if (vco_freq1 > 700000000) 5773c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning break; 5783c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 5793c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning for (div_q1 = 0; div_q1 < 7; div_q1++) { 5803c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning u32 pllout_freq1 = vco_freq1 / (1 << div_q1); 5813c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning int error = abs(pllout_freq1 - clk_pixel_pll); 5823c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 5833c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning if (pllout_freq1 < 5000000) 5843c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning break; 5853c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 5863c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning if (pllout_freq1 > 700000000) 5873c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning continue; 5883c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 5893c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning if (error < min_error) { 5903c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning min_error = error; 5913c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 5923c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning /* final returned value is equal to calculated value - 1 5933c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning * because a value of 0 = divide by 1 */ 5943c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning asic_pll->div_r0 = div_r0 - 1; 5953c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning asic_pll->div_f0 = div_f0 - 1; 5963c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning asic_pll->div_q0 = div_q0; 5973c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning asic_pll->div_r1 = div_r1 - 1; 5983c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning asic_pll->div_f1 = div_f1 - 1; 5993c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning asic_pll->div_q1 = div_q1; 6003c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 6013c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning asic_pll->range0 = ufx_calc_range(ref_freq0); 6023c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning asic_pll->range1 = ufx_calc_range(ref_freq1); 6033c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 6043c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning if (min_error == 0) 6053c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning return; 6063c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning } 6073c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning } 6083c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning } 6093c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning } 6103c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning } 6113c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning } 6123c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning } 6133c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning} 6143c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 6153c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning/* sets analog bit PLL configuration values */ 6163c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinningstatic int ufx_config_pix_clk(struct ufx_data *dev, u32 pixclock) 6173c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning{ 6183c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning struct pll_values asic_pll = {0}; 6193c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning u32 value, clk_pixel, clk_pixel_pll; 6203c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning int status; 6213c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 6223c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning /* convert pixclock (in ps) to frequency (in Hz) */ 6233c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning clk_pixel = PICOS2KHZ(pixclock) * 1000; 6243c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning pr_debug("pixclock %d ps = clk_pixel %d Hz", pixclock, clk_pixel); 6253c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 6263c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning /* clk_pixel = 1/2 clk_pixel_pll */ 6273c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning clk_pixel_pll = clk_pixel * 2; 6283c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 6293c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning ufx_calc_pll_values(clk_pixel_pll, &asic_pll); 6303c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 6313c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning /* Keep BYPASS and RESET signals asserted until configured */ 6323c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning status = ufx_reg_write(dev, 0x7000, 0x8000000F); 6333c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning check_warn_return(status, "error writing 0x7000"); 6343c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 6353c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning value = (asic_pll.div_f1 | (asic_pll.div_r1 << 8) | 6363c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning (asic_pll.div_q1 << 16) | (asic_pll.range1 << 20)); 6373c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning status = ufx_reg_write(dev, 0x7008, value); 6383c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning check_warn_return(status, "error writing 0x7008"); 6393c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 6403c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning value = (asic_pll.div_f0 | (asic_pll.div_r0 << 8) | 6413c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning (asic_pll.div_q0 << 16) | (asic_pll.range0 << 20)); 6423c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning status = ufx_reg_write(dev, 0x7004, value); 6433c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning check_warn_return(status, "error writing 0x7004"); 6443c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 6453c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning status = ufx_reg_clear_bits(dev, 0x7000, 0x00000005); 6463c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning check_warn_return(status, 6473c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning "error clearing PLL0 bypass bits in 0x7000"); 6483c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning msleep(1); 6493c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 6503c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning status = ufx_reg_clear_bits(dev, 0x7000, 0x0000000A); 6513c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning check_warn_return(status, 6523c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning "error clearing PLL1 bypass bits in 0x7000"); 6533c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning msleep(1); 6543c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 6553c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning status = ufx_reg_clear_bits(dev, 0x7000, 0x80000000); 6563c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning check_warn_return(status, "error clearing gate bits in 0x7000"); 6573c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 6583c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning return 0; 6593c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning} 6603c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 6613c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinningstatic int ufx_set_vid_mode(struct ufx_data *dev, struct fb_var_screeninfo *var) 6623c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning{ 6633c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning u32 temp; 6643c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning u16 h_total, h_active, h_blank_start, h_blank_end, h_sync_start, h_sync_end; 6653c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning u16 v_total, v_active, v_blank_start, v_blank_end, v_sync_start, v_sync_end; 6663c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 6673c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning int status = ufx_reg_write(dev, 0x8028, 0); 6683c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning check_warn_return(status, "ufx_set_vid_mode error disabling RGB pad"); 6693c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 6703c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning status = ufx_reg_write(dev, 0x8024, 0); 6713c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning check_warn_return(status, "ufx_set_vid_mode error disabling VDAC"); 6723c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 6733c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning /* shut everything down before changing timing */ 6743c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning status = ufx_blank(dev, true); 6753c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning check_warn_return(status, "ufx_set_vid_mode error blanking display"); 6763c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 6773c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning status = ufx_disable(dev, true); 6783c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning check_warn_return(status, "ufx_set_vid_mode error disabling display"); 6793c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 6803c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning status = ufx_config_pix_clk(dev, var->pixclock); 6813c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning check_warn_return(status, "ufx_set_vid_mode error configuring pixclock"); 6823c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 6833c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning status = ufx_reg_write(dev, 0x2000, 0x00000104); 6843c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning check_warn_return(status, "ufx_set_vid_mode error writing 0x2000"); 6853c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 6863c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning /* set horizontal timings */ 6873c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning h_total = var->xres + var->right_margin + var->hsync_len + var->left_margin; 6883c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning h_active = var->xres; 6893c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning h_blank_start = var->xres + var->right_margin; 6903c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning h_blank_end = var->xres + var->right_margin + var->hsync_len; 6913c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning h_sync_start = var->xres + var->right_margin; 6923c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning h_sync_end = var->xres + var->right_margin + var->hsync_len; 6933c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 6943c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning temp = ((h_total - 1) << 16) | (h_active - 1); 6953c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning status = ufx_reg_write(dev, 0x2008, temp); 6963c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning check_warn_return(status, "ufx_set_vid_mode error writing 0x2008"); 6973c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 6983c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning temp = ((h_blank_start - 1) << 16) | (h_blank_end - 1); 6993c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning status = ufx_reg_write(dev, 0x200C, temp); 7003c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning check_warn_return(status, "ufx_set_vid_mode error writing 0x200C"); 7013c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 7023c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning temp = ((h_sync_start - 1) << 16) | (h_sync_end - 1); 7033c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning status = ufx_reg_write(dev, 0x2010, temp); 7043c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning check_warn_return(status, "ufx_set_vid_mode error writing 0x2010"); 7053c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 7063c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning /* set vertical timings */ 7073c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning v_total = var->upper_margin + var->yres + var->lower_margin + var->vsync_len; 7083c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning v_active = var->yres; 7093c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning v_blank_start = var->yres + var->lower_margin; 7103c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning v_blank_end = var->yres + var->lower_margin + var->vsync_len; 7113c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning v_sync_start = var->yres + var->lower_margin; 7123c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning v_sync_end = var->yres + var->lower_margin + var->vsync_len; 7133c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 7143c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning temp = ((v_total - 1) << 16) | (v_active - 1); 7153c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning status = ufx_reg_write(dev, 0x2014, temp); 7163c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning check_warn_return(status, "ufx_set_vid_mode error writing 0x2014"); 7173c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 7183c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning temp = ((v_blank_start - 1) << 16) | (v_blank_end - 1); 7193c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning status = ufx_reg_write(dev, 0x2018, temp); 7203c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning check_warn_return(status, "ufx_set_vid_mode error writing 0x2018"); 7213c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 7223c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning temp = ((v_sync_start - 1) << 16) | (v_sync_end - 1); 7233c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning status = ufx_reg_write(dev, 0x201C, temp); 7243c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning check_warn_return(status, "ufx_set_vid_mode error writing 0x201C"); 7253c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 7263c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning status = ufx_reg_write(dev, 0x2020, 0x00000000); 7273c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning check_warn_return(status, "ufx_set_vid_mode error writing 0x2020"); 7283c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 7293c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning status = ufx_reg_write(dev, 0x2024, 0x00000000); 7303c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning check_warn_return(status, "ufx_set_vid_mode error writing 0x2024"); 7313c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 7323c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning /* Set the frame length register (#pix * 2 bytes/pixel) */ 7333c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning temp = var->xres * var->yres * 2; 7343c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning temp = (temp + 7) & (~0x7); 7353c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning status = ufx_reg_write(dev, 0x2028, temp); 7363c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning check_warn_return(status, "ufx_set_vid_mode error writing 0x2028"); 7373c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 7383c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning /* enable desired output interface & disable others */ 7393c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning status = ufx_reg_write(dev, 0x2040, 0); 7403c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning check_warn_return(status, "ufx_set_vid_mode error writing 0x2040"); 7413c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 7423c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning status = ufx_reg_write(dev, 0x2044, 0); 7433c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning check_warn_return(status, "ufx_set_vid_mode error writing 0x2044"); 7443c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 7453c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning status = ufx_reg_write(dev, 0x2048, 0); 7463c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning check_warn_return(status, "ufx_set_vid_mode error writing 0x2048"); 7473c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 7483c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning /* set the sync polarities & enable bit */ 7493c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning temp = 0x00000001; 7503c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning if (var->sync & FB_SYNC_HOR_HIGH_ACT) 7513c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning temp |= 0x00000010; 7523c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 7533c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning if (var->sync & FB_SYNC_VERT_HIGH_ACT) 7543c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning temp |= 0x00000008; 7553c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 7563c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning status = ufx_reg_write(dev, 0x2040, temp); 7573c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning check_warn_return(status, "ufx_set_vid_mode error writing 0x2040"); 7583c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 7593c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning /* start everything back up */ 7603c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning status = ufx_enable(dev, true); 7613c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning check_warn_return(status, "ufx_set_vid_mode error enabling display"); 7623c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 7633c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning /* Unblank the display */ 7643c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning status = ufx_unblank(dev, true); 7653c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning check_warn_return(status, "ufx_set_vid_mode error unblanking display"); 7663c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 7673c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning /* enable RGB pad */ 7683c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning status = ufx_reg_write(dev, 0x8028, 0x00000003); 7693c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning check_warn_return(status, "ufx_set_vid_mode error enabling RGB pad"); 7703c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 7713c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning /* enable VDAC */ 7723c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning status = ufx_reg_write(dev, 0x8024, 0x00000007); 7733c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning check_warn_return(status, "ufx_set_vid_mode error enabling VDAC"); 7743c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 7753c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning return 0; 7763c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning} 7773c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 7783c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinningstatic int ufx_ops_mmap(struct fb_info *info, struct vm_area_struct *vma) 7793c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning{ 7803c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning unsigned long start = vma->vm_start; 7813c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning unsigned long size = vma->vm_end - vma->vm_start; 7823c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning unsigned long offset = vma->vm_pgoff << PAGE_SHIFT; 7833c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning unsigned long page, pos; 7843c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 7853c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning if (offset + size > info->fix.smem_len) 7863c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning return -EINVAL; 7873c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 7883c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning pos = (unsigned long)info->fix.smem_start + offset; 7893c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 7903c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning pr_debug("mmap() framebuffer addr:%lu size:%lu\n", 7913c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning pos, size); 7923c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 7933c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning while (size > 0) { 7943c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning page = vmalloc_to_pfn((void *)pos); 7953c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning if (remap_pfn_range(vma, start, page, PAGE_SIZE, PAGE_SHARED)) 7963c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning return -EAGAIN; 7973c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 7983c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning start += PAGE_SIZE; 7993c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning pos += PAGE_SIZE; 8003c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning if (size > PAGE_SIZE) 8013c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning size -= PAGE_SIZE; 8023c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning else 8033c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning size = 0; 8043c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning } 8053c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 8063c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning vma->vm_flags |= VM_RESERVED; /* avoid to swap out this VMA */ 8073c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning return 0; 8083c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning} 8093c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 810be444890c82a150d137c75cac8c7f3c5b02b7748Steve Glendinningstatic void ufx_raw_rect(struct ufx_data *dev, u16 *cmd, int x, int y, 8113c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning int width, int height) 8123c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning{ 8133c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning size_t packed_line_len = ALIGN((width * 2), 4); 8143c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning size_t packed_rect_len = packed_line_len * height; 8153c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning int line; 8163c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 8173c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning BUG_ON(!dev); 8183c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning BUG_ON(!dev->info); 8193c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 8203c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning /* command word */ 8213c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning *((u32 *)&cmd[0]) = cpu_to_le32(0x01); 8223c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 8233c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning /* length word */ 824be444890c82a150d137c75cac8c7f3c5b02b7748Steve Glendinning *((u32 *)&cmd[2]) = cpu_to_le32(packed_rect_len + 16); 8253c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 826be444890c82a150d137c75cac8c7f3c5b02b7748Steve Glendinning cmd[4] = cpu_to_le16(x); 827be444890c82a150d137c75cac8c7f3c5b02b7748Steve Glendinning cmd[5] = cpu_to_le16(y); 828be444890c82a150d137c75cac8c7f3c5b02b7748Steve Glendinning cmd[6] = cpu_to_le16(width); 829be444890c82a150d137c75cac8c7f3c5b02b7748Steve Glendinning cmd[7] = cpu_to_le16(height); 8303c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 8313c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning /* frame base address */ 832be444890c82a150d137c75cac8c7f3c5b02b7748Steve Glendinning *((u32 *)&cmd[8]) = cpu_to_le32(0); 8333c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 8343c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning /* color mode and horizontal resolution */ 835be444890c82a150d137c75cac8c7f3c5b02b7748Steve Glendinning cmd[10] = cpu_to_le16(0x4000 | dev->info->var.xres); 8363c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 8373c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning /* vertical resolution */ 838be444890c82a150d137c75cac8c7f3c5b02b7748Steve Glendinning cmd[11] = cpu_to_le16(dev->info->var.yres); 8393c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 8403c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning /* packed data */ 8413c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning for (line = 0; line < height; line++) { 8423c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning const int line_offset = dev->info->fix.line_length * (y + line); 8433c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning const int byte_offset = line_offset + (x * BPP); 844be444890c82a150d137c75cac8c7f3c5b02b7748Steve Glendinning memcpy(&cmd[(24 + (packed_line_len * line)) / 2], 8453c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning (char *)dev->info->fix.smem_start + byte_offset, width * BPP); 8463c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning } 8473c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning} 8483c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 8493c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinningint ufx_handle_damage(struct ufx_data *dev, int x, int y, 8503c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning int width, int height) 8513c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning{ 8523c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning size_t packed_line_len = ALIGN((width * 2), 4); 8533c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning int len, status, urb_lines, start_line = 0; 8543c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 8553c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning if ((width <= 0) || (height <= 0) || 8563c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning (x + width > dev->info->var.xres) || 8573c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning (y + height > dev->info->var.yres)) 8583c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning return -EINVAL; 8593c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 8603c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning if (!atomic_read(&dev->usb_active)) 8613c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning return 0; 8623c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 8633c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning while (start_line < height) { 8643c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning struct urb *urb = ufx_get_urb(dev); 8653c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning if (!urb) { 8663c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning pr_warn("ufx_handle_damage unable to get urb"); 8673c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning return 0; 8683c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning } 8693c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 8703c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning /* assume we have enough space to transfer at least one line */ 8713c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning BUG_ON(urb->transfer_buffer_length < (24 + (width * 2))); 8723c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 8733c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning /* calculate the maximum number of lines we could fit in */ 8743c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning urb_lines = (urb->transfer_buffer_length - 24) / packed_line_len; 8753c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 8763c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning /* but we might not need this many */ 8773c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning urb_lines = min(urb_lines, (height - start_line)); 8783c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 8793c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning memset(urb->transfer_buffer, 0, urb->transfer_buffer_length); 8803c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 8813c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning ufx_raw_rect(dev, urb->transfer_buffer, x, (y + start_line), width, urb_lines); 8823c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning len = 24 + (packed_line_len * urb_lines); 8833c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 8843c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning status = ufx_submit_urb(dev, urb, len); 8853c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning check_warn_return(status, "Error submitting URB"); 8863c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 8873c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning start_line += urb_lines; 8883c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning } 8893c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 8903c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning return 0; 8913c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning} 8923c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 8933c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning/* Path triggered by usermode clients who write to filesystem 8943c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning * e.g. cat filename > /dev/fb1 8953c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning * Not used by X Windows or text-mode console. But useful for testing. 8963c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning * Slow because of extra copy and we must assume all pixels dirty. */ 8973c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinningstatic ssize_t ufx_ops_write(struct fb_info *info, const char __user *buf, 8983c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning size_t count, loff_t *ppos) 8993c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning{ 9003c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning ssize_t result; 9013c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning struct ufx_data *dev = info->par; 9023c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning u32 offset = (u32) *ppos; 9033c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 9043c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning result = fb_sys_write(info, buf, count, ppos); 9053c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 9063c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning if (result > 0) { 9073c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning int start = max((int)(offset / info->fix.line_length) - 1, 0); 9083c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning int lines = min((u32)((result / info->fix.line_length) + 1), 9093c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning (u32)info->var.yres); 9103c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 9113c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning ufx_handle_damage(dev, 0, start, info->var.xres, lines); 9123c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning } 9133c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 9143c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning return result; 9153c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning} 9163c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 9173c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinningstatic void ufx_ops_copyarea(struct fb_info *info, 9183c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning const struct fb_copyarea *area) 9193c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning{ 9203c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 9213c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning struct ufx_data *dev = info->par; 9223c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 9233c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning sys_copyarea(info, area); 9243c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 9253c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning ufx_handle_damage(dev, area->dx, area->dy, 9263c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning area->width, area->height); 9273c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning} 9283c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 9293c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinningstatic void ufx_ops_imageblit(struct fb_info *info, 9303c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning const struct fb_image *image) 9313c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning{ 9323c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning struct ufx_data *dev = info->par; 9333c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 9343c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning sys_imageblit(info, image); 9353c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 9363c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning ufx_handle_damage(dev, image->dx, image->dy, 9373c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning image->width, image->height); 9383c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning} 9393c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 9403c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinningstatic void ufx_ops_fillrect(struct fb_info *info, 9413c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning const struct fb_fillrect *rect) 9423c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning{ 9433c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning struct ufx_data *dev = info->par; 9443c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 9453c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning sys_fillrect(info, rect); 9463c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 9473c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning ufx_handle_damage(dev, rect->dx, rect->dy, rect->width, 9483c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning rect->height); 9493c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning} 9503c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 9513c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning/* NOTE: fb_defio.c is holding info->fbdefio.mutex 9523c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning * Touching ANY framebuffer memory that triggers a page fault 9533c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning * in fb_defio will cause a deadlock, when it also tries to 9543c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning * grab the same mutex. */ 9553c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinningstatic void ufx_dpy_deferred_io(struct fb_info *info, 9563c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning struct list_head *pagelist) 9573c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning{ 9583c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning struct page *cur; 9593c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning struct fb_deferred_io *fbdefio = info->fbdefio; 9603c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning struct ufx_data *dev = info->par; 9613c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 9623c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning if (!fb_defio) 9633c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning return; 9643c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 9653c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning if (!atomic_read(&dev->usb_active)) 9663c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning return; 9673c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 9683c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning /* walk the written page list and render each to device */ 9693c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning list_for_each_entry(cur, &fbdefio->pagelist, lru) { 9703c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning /* create a rectangle of full screen width that encloses the 9713c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning * entire dirty framebuffer page */ 9723c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning const int x = 0; 9733c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning const int width = dev->info->var.xres; 9743c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning const int y = (cur->index << PAGE_SHIFT) / (width * 2); 9753c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning int height = (PAGE_SIZE / (width * 2)) + 1; 9763c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning height = min(height, (int)(dev->info->var.yres - y)); 9773c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 9783c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning BUG_ON(y >= dev->info->var.yres); 9793c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning BUG_ON((y + height) > dev->info->var.yres); 9803c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 9813c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning ufx_handle_damage(dev, x, y, width, height); 9823c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning } 9833c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning} 9843c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 9853c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinningstatic int ufx_ops_ioctl(struct fb_info *info, unsigned int cmd, 9863c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning unsigned long arg) 9873c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning{ 9883c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning struct ufx_data *dev = info->par; 9893c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning struct dloarea *area = NULL; 9903c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 9913c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning if (!atomic_read(&dev->usb_active)) 9923c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning return 0; 9933c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 9943c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning /* TODO: Update X server to get this from sysfs instead */ 9953c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning if (cmd == UFX_IOCTL_RETURN_EDID) { 996261e767628bb5971b9032439818237cc8511ea94Dan Carpenter u8 __user *edid = (u8 __user *)arg; 9973c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning if (copy_to_user(edid, dev->edid, dev->edid_size)) 9983c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning return -EFAULT; 9993c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning return 0; 10003c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning } 10013c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 10023c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning /* TODO: Help propose a standard fb.h ioctl to report mmap damage */ 10033c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning if (cmd == UFX_IOCTL_REPORT_DAMAGE) { 10043c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning /* If we have a damage-aware client, turn fb_defio "off" 10053c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning * To avoid perf imact of unecessary page fault handling. 10063c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning * Done by resetting the delay for this fb_info to a very 10073c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning * long period. Pages will become writable and stay that way. 10083c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning * Reset to normal value when all clients have closed this fb. 10093c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning */ 10103c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning if (info->fbdefio) 10113c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning info->fbdefio->delay = UFX_DEFIO_WRITE_DISABLE; 10123c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 10133c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning area = (struct dloarea *)arg; 10143c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 10153c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning if (area->x < 0) 10163c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning area->x = 0; 10173c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 10183c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning if (area->x > info->var.xres) 10193c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning area->x = info->var.xres; 10203c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 10213c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning if (area->y < 0) 10223c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning area->y = 0; 10233c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 10243c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning if (area->y > info->var.yres) 10253c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning area->y = info->var.yres; 10263c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 10273c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning ufx_handle_damage(dev, area->x, area->y, area->w, area->h); 10283c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning } 10293c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 10303c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning return 0; 10313c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning} 10323c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 10333c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning/* taken from vesafb */ 10343c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinningstatic int 10353c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinningufx_ops_setcolreg(unsigned regno, unsigned red, unsigned green, 10363c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning unsigned blue, unsigned transp, struct fb_info *info) 10373c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning{ 10383c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning int err = 0; 10393c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 10403c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning if (regno >= info->cmap.len) 10413c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning return 1; 10423c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 10433c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning if (regno < 16) { 10443c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning if (info->var.red.offset == 10) { 10453c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning /* 1:5:5:5 */ 10463c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning ((u32 *) (info->pseudo_palette))[regno] = 10473c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning ((red & 0xf800) >> 1) | 10483c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning ((green & 0xf800) >> 6) | ((blue & 0xf800) >> 11); 10493c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning } else { 10503c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning /* 0:5:6:5 */ 10513c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning ((u32 *) (info->pseudo_palette))[regno] = 10523c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning ((red & 0xf800)) | 10533c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning ((green & 0xfc00) >> 5) | ((blue & 0xf800) >> 11); 10543c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning } 10553c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning } 10563c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 10573c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning return err; 10583c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning} 10593c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 10603c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning/* It's common for several clients to have framebuffer open simultaneously. 10613c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning * e.g. both fbcon and X. Makes things interesting. 10623c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning * Assumes caller is holding info->lock (for open and release at least) */ 10633c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinningstatic int ufx_ops_open(struct fb_info *info, int user) 10643c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning{ 10653c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning struct ufx_data *dev = info->par; 10663c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 10673c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning /* fbcon aggressively connects to first framebuffer it finds, 10683c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning * preventing other clients (X) from working properly. Usually 10693c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning * not what the user wants. Fail by default with option to enable. */ 10703c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning if (user == 0 && !console) 10713c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning return -EBUSY; 10723c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 10733c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning /* If the USB device is gone, we don't accept new opens */ 10743c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning if (dev->virtualized) 10753c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning return -ENODEV; 10763c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 10773c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning dev->fb_count++; 10783c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 10793c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning kref_get(&dev->kref); 10803c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 10813c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning if (fb_defio && (info->fbdefio == NULL)) { 10823c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning /* enable defio at last moment if not disabled by client */ 10833c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 10843c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning struct fb_deferred_io *fbdefio; 10853c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 10863c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning fbdefio = kmalloc(sizeof(struct fb_deferred_io), GFP_KERNEL); 10873c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 10883c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning if (fbdefio) { 10893c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning fbdefio->delay = UFX_DEFIO_WRITE_DELAY; 10903c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning fbdefio->deferred_io = ufx_dpy_deferred_io; 10913c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning } 10923c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 10933c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning info->fbdefio = fbdefio; 10943c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning fb_deferred_io_init(info); 10953c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning } 10963c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 10973c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning pr_debug("open /dev/fb%d user=%d fb_info=%p count=%d", 10983c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning info->node, user, info, dev->fb_count); 10993c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 11003c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning return 0; 11013c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning} 11023c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 11033c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning/* 11043c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning * Called when all client interfaces to start transactions have been disabled, 11053c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning * and all references to our device instance (ufx_data) are released. 11063c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning * Every transaction must have a reference, so we know are fully spun down 11073c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning */ 11083c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinningstatic void ufx_free(struct kref *kref) 11093c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning{ 11103c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning struct ufx_data *dev = container_of(kref, struct ufx_data, kref); 11113c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 11123c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning /* this function will wait for all in-flight urbs to complete */ 11133c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning if (dev->urbs.count > 0) 11143c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning ufx_free_urb_list(dev); 11153c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 11163c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning pr_debug("freeing ufx_data %p", dev); 11173c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 11183c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning kfree(dev); 11193c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning} 11203c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 11213c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinningstatic void ufx_release_urb_work(struct work_struct *work) 11223c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning{ 11233c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning struct urb_node *unode = container_of(work, struct urb_node, 11243c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning release_urb_work.work); 11253c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 11263c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning up(&unode->dev->urbs.limit_sem); 11273c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning} 11283c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 11293c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinningstatic void ufx_free_framebuffer_work(struct work_struct *work) 11303c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning{ 11313c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning struct ufx_data *dev = container_of(work, struct ufx_data, 11323c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning free_framebuffer_work.work); 11333c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning struct fb_info *info = dev->info; 11343c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning int node = info->node; 11353c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 11363c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning unregister_framebuffer(info); 11373c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 11383c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning if (info->cmap.len != 0) 11393c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning fb_dealloc_cmap(&info->cmap); 11403c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning if (info->monspecs.modedb) 11413c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning fb_destroy_modedb(info->monspecs.modedb); 11423c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning if (info->screen_base) 11433c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning vfree(info->screen_base); 11443c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 11453c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning fb_destroy_modelist(&info->modelist); 11463c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 11473c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning dev->info = 0; 11483c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 11493c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning /* Assume info structure is freed after this point */ 11503c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning framebuffer_release(info); 11513c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 11523c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning pr_debug("fb_info for /dev/fb%d has been freed", node); 11533c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 11543c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning /* ref taken in probe() as part of registering framebfufer */ 11553c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning kref_put(&dev->kref, ufx_free); 11563c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning} 11573c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 11583c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning/* 11593c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning * Assumes caller is holding info->lock mutex (for open and release at least) 11603c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning */ 11613c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinningstatic int ufx_ops_release(struct fb_info *info, int user) 11623c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning{ 11633c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning struct ufx_data *dev = info->par; 11643c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 11653c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning dev->fb_count--; 11663c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 11673c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning /* We can't free fb_info here - fbmem will touch it when we return */ 11683c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning if (dev->virtualized && (dev->fb_count == 0)) 11693c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning schedule_delayed_work(&dev->free_framebuffer_work, HZ); 11703c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 11713c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning if ((dev->fb_count == 0) && (info->fbdefio)) { 11723c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning fb_deferred_io_cleanup(info); 11733c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning kfree(info->fbdefio); 11743c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning info->fbdefio = NULL; 11753c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning info->fbops->fb_mmap = ufx_ops_mmap; 11763c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning } 11773c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 11783c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning pr_debug("released /dev/fb%d user=%d count=%d", 11793c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning info->node, user, dev->fb_count); 11803c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 11813c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning kref_put(&dev->kref, ufx_free); 11823c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 11833c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning return 0; 11843c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning} 11853c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 11863c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning/* Check whether a video mode is supported by the chip 11873c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning * We start from monitor's modes, so don't need to filter that here */ 11883c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinningstatic int ufx_is_valid_mode(struct fb_videomode *mode, 11893c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning struct fb_info *info) 11903c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning{ 11913c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning if ((mode->xres * mode->yres) > (2048 * 1152)) { 11923c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning pr_debug("%dx%d too many pixels", 11933c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning mode->xres, mode->yres); 11943c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning return 0; 11953c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning } 11963c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 11973c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning if (mode->pixclock < 5000) { 11983c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning pr_debug("%dx%d %dps pixel clock too fast", 11993c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning mode->xres, mode->yres, mode->pixclock); 12003c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning return 0; 12013c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning } 12023c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 12033c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning pr_debug("%dx%d (pixclk %dps %dMHz) valid mode", mode->xres, mode->yres, 12043c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning mode->pixclock, (1000000 / mode->pixclock)); 12053c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning return 1; 12063c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning} 12073c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 12083c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinningstatic void ufx_var_color_format(struct fb_var_screeninfo *var) 12093c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning{ 12103c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning const struct fb_bitfield red = { 11, 5, 0 }; 12113c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning const struct fb_bitfield green = { 5, 6, 0 }; 12123c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning const struct fb_bitfield blue = { 0, 5, 0 }; 12133c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 12143c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning var->bits_per_pixel = 16; 12153c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning var->red = red; 12163c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning var->green = green; 12173c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning var->blue = blue; 12183c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning} 12193c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 12203c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinningstatic int ufx_ops_check_var(struct fb_var_screeninfo *var, 12213c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning struct fb_info *info) 12223c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning{ 12233c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning struct fb_videomode mode; 12243c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 12253c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning /* TODO: support dynamically changing framebuffer size */ 12263c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning if ((var->xres * var->yres * 2) > info->fix.smem_len) 12273c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning return -EINVAL; 12283c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 12293c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning /* set device-specific elements of var unrelated to mode */ 12303c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning ufx_var_color_format(var); 12313c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 12323c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning fb_var_to_videomode(&mode, var); 12333c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 12343c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning if (!ufx_is_valid_mode(&mode, info)) 12353c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning return -EINVAL; 12363c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 12373c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning return 0; 12383c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning} 12393c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 12403c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinningstatic int ufx_ops_set_par(struct fb_info *info) 12413c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning{ 12423c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning struct ufx_data *dev = info->par; 12433c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning int result; 12443c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning u16 *pix_framebuffer; 12453c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning int i; 12463c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 12473c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning pr_debug("set_par mode %dx%d", info->var.xres, info->var.yres); 12483c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning result = ufx_set_vid_mode(dev, &info->var); 12493c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 12503c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning if ((result == 0) && (dev->fb_count == 0)) { 12513c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning /* paint greenscreen */ 12523c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning pix_framebuffer = (u16 *) info->screen_base; 12533c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning for (i = 0; i < info->fix.smem_len / 2; i++) 12543c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning pix_framebuffer[i] = 0x37e6; 12553c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 12563c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning ufx_handle_damage(dev, 0, 0, info->var.xres, info->var.yres); 12573c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning } 12583c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 12593c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning /* re-enable defio if previously disabled by damage tracking */ 12603c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning if (info->fbdefio) 12613c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning info->fbdefio->delay = UFX_DEFIO_WRITE_DELAY; 12623c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 12633c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning return result; 12643c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning} 12653c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 12663c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning/* In order to come back from full DPMS off, we need to set the mode again */ 12673c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinningstatic int ufx_ops_blank(int blank_mode, struct fb_info *info) 12683c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning{ 12693c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning struct ufx_data *dev = info->par; 12703c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning ufx_set_vid_mode(dev, &info->var); 12713c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning return 0; 12723c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning} 12733c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 12743c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinningstatic struct fb_ops ufx_ops = { 12753c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning .owner = THIS_MODULE, 12763c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning .fb_read = fb_sys_read, 12773c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning .fb_write = ufx_ops_write, 12783c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning .fb_setcolreg = ufx_ops_setcolreg, 12793c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning .fb_fillrect = ufx_ops_fillrect, 12803c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning .fb_copyarea = ufx_ops_copyarea, 12813c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning .fb_imageblit = ufx_ops_imageblit, 12823c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning .fb_mmap = ufx_ops_mmap, 12833c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning .fb_ioctl = ufx_ops_ioctl, 12843c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning .fb_open = ufx_ops_open, 12853c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning .fb_release = ufx_ops_release, 12863c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning .fb_blank = ufx_ops_blank, 12873c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning .fb_check_var = ufx_ops_check_var, 12883c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning .fb_set_par = ufx_ops_set_par, 12893c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning}; 12903c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 12913c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning/* Assumes &info->lock held by caller 12923c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning * Assumes no active clients have framebuffer open */ 12933c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinningstatic int ufx_realloc_framebuffer(struct ufx_data *dev, struct fb_info *info) 12943c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning{ 12953c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning int retval = -ENOMEM; 12963c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning int old_len = info->fix.smem_len; 12973c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning int new_len; 12983c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning unsigned char *old_fb = info->screen_base; 12993c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning unsigned char *new_fb; 13003c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 13013c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning pr_debug("Reallocating framebuffer. Addresses will change!"); 13023c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 13033c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning new_len = info->fix.line_length * info->var.yres; 13043c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 13053c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning if (PAGE_ALIGN(new_len) > old_len) { 13063c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning /* 13073c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning * Alloc system memory for virtual framebuffer 13083c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning */ 13093c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning new_fb = vmalloc(new_len); 13103c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning if (!new_fb) { 13113c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning pr_err("Virtual framebuffer alloc failed"); 13123c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning goto error; 13133c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning } 13143c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 13153c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning if (info->screen_base) { 13163c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning memcpy(new_fb, old_fb, old_len); 13173c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning vfree(info->screen_base); 13183c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning } 13193c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 13203c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning info->screen_base = new_fb; 13213c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning info->fix.smem_len = PAGE_ALIGN(new_len); 13223c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning info->fix.smem_start = (unsigned long) new_fb; 13233c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning info->flags = smscufx_info_flags; 13243c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning } 13253c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 13263c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning retval = 0; 13273c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 13283c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinningerror: 13293c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning return retval; 13303c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning} 13313c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 13323c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning/* sets up I2C Controller for 100 Kbps, std. speed, 7-bit addr, master, 13333c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning * restart enabled, but no start byte, enable controller */ 13343c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinningstatic int ufx_i2c_init(struct ufx_data *dev) 13353c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning{ 13363c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning u32 tmp; 13373c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 13383c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning /* disable the controller before it can be reprogrammed */ 13393c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning int status = ufx_reg_write(dev, 0x106C, 0x00); 13403c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning check_warn_return(status, "failed to disable I2C"); 13413c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 13423c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning /* Setup the clock count registers 13433c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning * (12+1) = 13 clks @ 2.5 MHz = 5.2 uS */ 13443c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning status = ufx_reg_write(dev, 0x1018, 12); 13453c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning check_warn_return(status, "error writing 0x1018"); 13463c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 13473c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning /* (6+8) = 14 clks @ 2.5 MHz = 5.6 uS */ 13483c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning status = ufx_reg_write(dev, 0x1014, 6); 13493c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning check_warn_return(status, "error writing 0x1014"); 13503c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 13513c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning status = ufx_reg_read(dev, 0x1000, &tmp); 13523c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning check_warn_return(status, "error reading 0x1000"); 13533c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 13543c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning /* set speed to std mode */ 13553c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning tmp &= ~(0x06); 13563c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning tmp |= 0x02; 13573c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 13583c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning /* 7-bit (not 10-bit) addressing */ 13593c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning tmp &= ~(0x10); 13603c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 13613c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning /* enable restart conditions and master mode */ 13623c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning tmp |= 0x21; 13633c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 13643c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning status = ufx_reg_write(dev, 0x1000, tmp); 13653c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning check_warn_return(status, "error writing 0x1000"); 13663c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 13673c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning /* Set normal tx using target address 0 */ 13683c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning status = ufx_reg_clear_and_set_bits(dev, 0x1004, 0xC00, 0x000); 13693c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning check_warn_return(status, "error setting TX mode bits in 0x1004"); 13703c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 13713c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning /* Enable the controller */ 13723c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning status = ufx_reg_write(dev, 0x106C, 0x01); 13733c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning check_warn_return(status, "failed to enable I2C"); 13743c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 13753c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning return 0; 13763c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning} 13773c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 13783c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning/* sets the I2C port mux and target address */ 13793c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinningstatic int ufx_i2c_configure(struct ufx_data *dev) 13803c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning{ 13813c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning int status = ufx_reg_write(dev, 0x106C, 0x00); 13823c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning check_warn_return(status, "failed to disable I2C"); 13833c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 13843c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning status = ufx_reg_write(dev, 0x3010, 0x00000000); 13853c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning check_warn_return(status, "failed to write 0x3010"); 13863c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 13873c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning /* A0h is std for any EDID, right shifted by one */ 13883c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning status = ufx_reg_clear_and_set_bits(dev, 0x1004, 0x3FF, (0xA0 >> 1)); 13893c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning check_warn_return(status, "failed to set TAR bits in 0x1004"); 13903c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 13913c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning status = ufx_reg_write(dev, 0x106C, 0x01); 13923c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning check_warn_return(status, "failed to enable I2C"); 13933c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 13943c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning return 0; 13953c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning} 13963c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 13973c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning/* wait for BUSY to clear, with a timeout of 50ms with 10ms sleeps. if no 13983c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning * monitor is connected, there is no error except for timeout */ 13993c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinningstatic int ufx_i2c_wait_busy(struct ufx_data *dev) 14003c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning{ 14013c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning u32 tmp; 14023c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning int i, status; 14033c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 14043c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning for (i = 0; i < 15; i++) { 14053c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning status = ufx_reg_read(dev, 0x1100, &tmp); 14063c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning check_warn_return(status, "0x1100 read failed"); 14073c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 14083c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning /* if BUSY is clear, check for error */ 14093c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning if ((tmp & 0x80000000) == 0) { 14103c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning if (tmp & 0x20000000) { 14113c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning pr_warn("I2C read failed, 0x1100=0x%08x", tmp); 14123c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning return -EIO; 14133c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning } 14143c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 14153c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning return 0; 14163c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning } 14173c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 14183c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning /* perform the first 10 retries without delay */ 14193c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning if (i >= 10) 14203c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning msleep(10); 14213c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning } 14223c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 14233c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning pr_warn("I2C access timed out, resetting I2C hardware"); 14243c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning status = ufx_reg_write(dev, 0x1100, 0x40000000); 14253c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning check_warn_return(status, "0x1100 write failed"); 14263c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 14273c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning return -ETIMEDOUT; 14283c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning} 14293c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 14303c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning/* reads a 128-byte EDID block from the currently selected port and TAR */ 1431261e767628bb5971b9032439818237cc8511ea94Dan Carpenterstatic int ufx_read_edid(struct ufx_data *dev, u8 *edid, int edid_len) 14323c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning{ 14333c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning int i, j, status; 14343c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning u32 *edid_u32 = (u32 *)edid; 14353c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 14363c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning BUG_ON(edid_len != EDID_LENGTH); 14373c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 14383c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning status = ufx_i2c_configure(dev); 14393c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning if (status < 0) { 14403c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning pr_err("ufx_i2c_configure failed"); 14413c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning return status; 14423c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning } 14433c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 14443c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning memset(edid, 0xff, EDID_LENGTH); 14453c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 14463c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning /* Read the 128-byte EDID as 2 bursts of 64 bytes */ 14473c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning for (i = 0; i < 2; i++) { 14483c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning u32 temp = 0x28070000 | (63 << 20) | (((u32)(i * 64)) << 8); 14493c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning status = ufx_reg_write(dev, 0x1100, temp); 14503c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning check_warn_return(status, "Failed to write 0x1100"); 14513c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 14523c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning temp |= 0x80000000; 14533c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning status = ufx_reg_write(dev, 0x1100, temp); 14543c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning check_warn_return(status, "Failed to write 0x1100"); 14553c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 14563c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning status = ufx_i2c_wait_busy(dev); 14573c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning check_warn_return(status, "Timeout waiting for I2C BUSY to clear"); 14583c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 14593c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning for (j = 0; j < 16; j++) { 14603c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning u32 data_reg_addr = 0x1110 + (j * 4); 14613c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning status = ufx_reg_read(dev, data_reg_addr, edid_u32++); 14623c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning check_warn_return(status, "Error reading i2c data"); 14633c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning } 14643c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning } 14653c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 14663c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning /* all FF's in the first 16 bytes indicates nothing is connected */ 14673c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning for (i = 0; i < 16; i++) { 14683c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning if (edid[i] != 0xFF) { 14693c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning pr_debug("edid data read succesfully"); 14703c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning return EDID_LENGTH; 14713c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning } 14723c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning } 14733c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 14743c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning pr_warn("edid data contains all 0xff"); 14753c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning return -ETIMEDOUT; 14763c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning} 14773c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 14783c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning/* 1) use sw default 14793c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning * 2) Parse into various fb_info structs 14803c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning * 3) Allocate virtual framebuffer memory to back highest res mode 14813c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning * 14823c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning * Parses EDID into three places used by various parts of fbdev: 14833c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning * fb_var_screeninfo contains the timing of the monitor's preferred mode 14843c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning * fb_info.monspecs is full parsed EDID info, including monspecs.modedb 14853c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning * fb_info.modelist is a linked list of all monitor & VESA modes which work 14863c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning * 14873c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning * If EDID is not readable/valid, then modelist is all VESA modes, 14883c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning * monspecs is NULL, and fb_var_screeninfo is set to safe VESA mode 14893c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning * Returns 0 if successful */ 14903c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinningstatic int ufx_setup_modes(struct ufx_data *dev, struct fb_info *info, 14913c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning char *default_edid, size_t default_edid_size) 14923c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning{ 14933c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning const struct fb_videomode *default_vmode = NULL; 1494261e767628bb5971b9032439818237cc8511ea94Dan Carpenter u8 *edid; 14953c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning int i, result = 0, tries = 3; 14963c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 14973c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning if (info->dev) /* only use mutex if info has been registered */ 14983c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning mutex_lock(&info->lock); 14993c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 15003c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning edid = kmalloc(EDID_LENGTH, GFP_KERNEL); 15013c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning if (!edid) { 15023c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning result = -ENOMEM; 15033c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning goto error; 15043c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning } 15053c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 15063c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning fb_destroy_modelist(&info->modelist); 15073c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning memset(&info->monspecs, 0, sizeof(info->monspecs)); 15083c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 15093c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning /* Try to (re)read EDID from hardware first 15103c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning * EDID data may return, but not parse as valid 15113c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning * Try again a few times, in case of e.g. analog cable noise */ 15123c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning while (tries--) { 15133c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning i = ufx_read_edid(dev, edid, EDID_LENGTH); 15143c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 15153c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning if (i >= EDID_LENGTH) 15163c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning fb_edid_to_monspecs(edid, &info->monspecs); 15173c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 15183c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning if (info->monspecs.modedb_len > 0) { 15193c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning dev->edid = edid; 15203c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning dev->edid_size = i; 15213c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning break; 15223c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning } 15233c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning } 15243c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 15253c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning /* If that fails, use a previously returned EDID if available */ 15263c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning if (info->monspecs.modedb_len == 0) { 15273c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning pr_err("Unable to get valid EDID from device/display\n"); 15283c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 15293c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning if (dev->edid) { 15303c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning fb_edid_to_monspecs(dev->edid, &info->monspecs); 15313c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning if (info->monspecs.modedb_len > 0) 15323c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning pr_err("Using previously queried EDID\n"); 15333c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning } 15343c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning } 15353c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 15363c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning /* If that fails, use the default EDID we were handed */ 15373c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning if (info->monspecs.modedb_len == 0) { 15383c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning if (default_edid_size >= EDID_LENGTH) { 15393c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning fb_edid_to_monspecs(default_edid, &info->monspecs); 15403c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning if (info->monspecs.modedb_len > 0) { 15413c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning memcpy(edid, default_edid, default_edid_size); 15423c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning dev->edid = edid; 15433c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning dev->edid_size = default_edid_size; 15443c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning pr_err("Using default/backup EDID\n"); 15453c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning } 15463c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning } 15473c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning } 15483c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 15493c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning /* If we've got modes, let's pick a best default mode */ 15503c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning if (info->monspecs.modedb_len > 0) { 15513c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 15523c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning for (i = 0; i < info->monspecs.modedb_len; i++) { 15533c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning if (ufx_is_valid_mode(&info->monspecs.modedb[i], info)) 15543c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning fb_add_videomode(&info->monspecs.modedb[i], 15553c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning &info->modelist); 15563c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning else /* if we've removed top/best mode */ 15573c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning info->monspecs.misc &= ~FB_MISC_1ST_DETAIL; 15583c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning } 15593c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 15603c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning default_vmode = fb_find_best_display(&info->monspecs, 15613c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning &info->modelist); 15623c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning } 15633c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 15643c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning /* If everything else has failed, fall back to safe default mode */ 15653c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning if (default_vmode == NULL) { 15663c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 15673c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning struct fb_videomode fb_vmode = {0}; 15683c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 15693c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning /* Add the standard VESA modes to our modelist 15703c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning * Since we don't have EDID, there may be modes that 15713c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning * overspec monitor and/or are incorrect aspect ratio, etc. 15723c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning * But at least the user has a chance to choose 15733c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning */ 15743c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning for (i = 0; i < VESA_MODEDB_SIZE; i++) { 15753c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning if (ufx_is_valid_mode((struct fb_videomode *) 15763c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning &vesa_modes[i], info)) 15773c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning fb_add_videomode(&vesa_modes[i], 15783c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning &info->modelist); 15793c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning } 15803c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 15813c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning /* default to resolution safe for projectors 15823c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning * (since they are most common case without EDID) 15833c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning */ 15843c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning fb_vmode.xres = 800; 15853c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning fb_vmode.yres = 600; 15863c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning fb_vmode.refresh = 60; 15873c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning default_vmode = fb_find_nearest_mode(&fb_vmode, 15883c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning &info->modelist); 15893c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning } 15903c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 15913c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning /* If we have good mode and no active clients */ 15923c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning if ((default_vmode != NULL) && (dev->fb_count == 0)) { 15933c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 15943c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning fb_videomode_to_var(&info->var, default_vmode); 15953c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning ufx_var_color_format(&info->var); 15963c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 15973c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning /* with mode size info, we can now alloc our framebuffer */ 15983c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning memcpy(&info->fix, &ufx_fix, sizeof(ufx_fix)); 15993c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning info->fix.line_length = info->var.xres * 16003c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning (info->var.bits_per_pixel / 8); 16013c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 16023c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning result = ufx_realloc_framebuffer(dev, info); 16033c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 16043c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning } else 16053c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning result = -EINVAL; 16063c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 16073c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinningerror: 16083c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning if (edid && (dev->edid != edid)) 16093c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning kfree(edid); 16103c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 16113c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning if (info->dev) 16123c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning mutex_unlock(&info->lock); 16133c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 16143c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning return result; 16153c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning} 16163c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 16173c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinningstatic int ufx_usb_probe(struct usb_interface *interface, 16183c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning const struct usb_device_id *id) 16193c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning{ 16203c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning struct usb_device *usbdev; 16213c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning struct ufx_data *dev; 16223c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning struct fb_info *info = 0; 16233c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning int retval = -ENOMEM; 16243c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning u32 id_rev, fpga_rev; 16253c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 16263c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning /* usb initialization */ 16273c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning usbdev = interface_to_usbdev(interface); 16283c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning BUG_ON(!usbdev); 16293c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 16303c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning dev = kzalloc(sizeof(*dev), GFP_KERNEL); 16313c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning if (dev == NULL) { 16323c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning dev_err(&usbdev->dev, "ufx_usb_probe: failed alloc of dev struct\n"); 16333c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning goto error; 16343c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning } 16353c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 16363c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning /* we need to wait for both usb and fbdev to spin down on disconnect */ 16373c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning kref_init(&dev->kref); /* matching kref_put in usb .disconnect fn */ 16383c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning kref_get(&dev->kref); /* matching kref_put in free_framebuffer_work */ 16393c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 16403c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning dev->udev = usbdev; 16413c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning dev->gdev = &usbdev->dev; /* our generic struct device * */ 16423c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning usb_set_intfdata(interface, dev); 16433c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 16443c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning dev_dbg(dev->gdev, "%s %s - serial #%s\n", 16453c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning usbdev->manufacturer, usbdev->product, usbdev->serial); 16463c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning dev_dbg(dev->gdev, "vid_%04x&pid_%04x&rev_%04x driver's ufx_data struct at %p\n", 16473c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning usbdev->descriptor.idVendor, usbdev->descriptor.idProduct, 16483c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning usbdev->descriptor.bcdDevice, dev); 16493c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning dev_dbg(dev->gdev, "console enable=%d\n", console); 16503c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning dev_dbg(dev->gdev, "fb_defio enable=%d\n", fb_defio); 16513c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 16523c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning if (!ufx_alloc_urb_list(dev, WRITES_IN_FLIGHT, MAX_TRANSFER)) { 16533c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning retval = -ENOMEM; 16543c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning dev_err(dev->gdev, "ufx_alloc_urb_list failed\n"); 16553c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning goto error; 16563c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning } 16573c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 16583c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning /* We don't register a new USB class. Our client interface is fbdev */ 16593c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 16603c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning /* allocates framebuffer driver structure, not framebuffer memory */ 16613c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning info = framebuffer_alloc(0, &usbdev->dev); 16623c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning if (!info) { 16633c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning retval = -ENOMEM; 16643c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning dev_err(dev->gdev, "framebuffer_alloc failed\n"); 16653c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning goto error; 16663c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning } 16673c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 16683c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning dev->info = info; 16693c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning info->par = dev; 16703c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning info->pseudo_palette = dev->pseudo_palette; 16713c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning info->fbops = &ufx_ops; 16723c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 16733c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning retval = fb_alloc_cmap(&info->cmap, 256, 0); 16743c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning if (retval < 0) { 16753c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning dev_err(dev->gdev, "fb_alloc_cmap failed %x\n", retval); 16763c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning goto error; 16773c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning } 16783c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 16793c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning INIT_DELAYED_WORK(&dev->free_framebuffer_work, 16803c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning ufx_free_framebuffer_work); 16813c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 16823c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning INIT_LIST_HEAD(&info->modelist); 16833c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 16843c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning retval = ufx_reg_read(dev, 0x3000, &id_rev); 16853c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning check_warn_goto_error(retval, "error %d reading 0x3000 register from device", retval); 16863c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning dev_dbg(dev->gdev, "ID_REV register value 0x%08x", id_rev); 16873c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 16883c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning retval = ufx_reg_read(dev, 0x3004, &fpga_rev); 16893c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning check_warn_goto_error(retval, "error %d reading 0x3004 register from device", retval); 16903c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning dev_dbg(dev->gdev, "FPGA_REV register value 0x%08x", fpga_rev); 16913c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 16923c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning dev_dbg(dev->gdev, "resetting device"); 16933c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning retval = ufx_lite_reset(dev); 16943c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning check_warn_goto_error(retval, "error %d resetting device", retval); 16953c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 16963c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning dev_dbg(dev->gdev, "configuring system clock"); 16973c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning retval = ufx_config_sys_clk(dev); 16983c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning check_warn_goto_error(retval, "error %d configuring system clock", retval); 16993c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 17003c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning dev_dbg(dev->gdev, "configuring DDR2 controller"); 17013c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning retval = ufx_config_ddr2(dev); 17023c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning check_warn_goto_error(retval, "error %d initialising DDR2 controller", retval); 17033c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 17043c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning dev_dbg(dev->gdev, "configuring I2C controller"); 17053c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning retval = ufx_i2c_init(dev); 17063c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning check_warn_goto_error(retval, "error %d initialising I2C controller", retval); 17073c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 17083c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning dev_dbg(dev->gdev, "selecting display mode"); 17093c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning retval = ufx_setup_modes(dev, info, NULL, 0); 17103c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning check_warn_goto_error(retval, "unable to find common mode for display and adapter"); 17113c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 17123c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning retval = ufx_reg_set_bits(dev, 0x4000, 0x00000001); 17133c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning check_warn_goto_error(retval, "error %d enabling graphics engine", retval); 17143c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 17153c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning /* ready to begin using device */ 17163c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning atomic_set(&dev->usb_active, 1); 17173c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 17183c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning dev_dbg(dev->gdev, "checking var"); 17193c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning retval = ufx_ops_check_var(&info->var, info); 17203c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning check_warn_goto_error(retval, "error %d ufx_ops_check_var", retval); 17213c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 17223c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning dev_dbg(dev->gdev, "setting par"); 17233c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning retval = ufx_ops_set_par(info); 17243c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning check_warn_goto_error(retval, "error %d ufx_ops_set_par", retval); 17253c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 17263c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning dev_dbg(dev->gdev, "registering framebuffer"); 17273c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning retval = register_framebuffer(info); 17283c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning check_warn_goto_error(retval, "error %d register_framebuffer", retval); 17293c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 17303c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning dev_info(dev->gdev, "SMSC UDX USB device /dev/fb%d attached. %dx%d resolution." 17313c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning " Using %dK framebuffer memory\n", info->node, 17323c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning info->var.xres, info->var.yres, info->fix.smem_len >> 10); 17333c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 17343c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning return 0; 17353c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 17363c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinningerror: 17373c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning if (dev) { 17383c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning if (info) { 17393c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning if (info->cmap.len != 0) 17403c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning fb_dealloc_cmap(&info->cmap); 17413c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning if (info->monspecs.modedb) 17423c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning fb_destroy_modedb(info->monspecs.modedb); 17433c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning if (info->screen_base) 17443c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning vfree(info->screen_base); 17453c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 17463c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning fb_destroy_modelist(&info->modelist); 17473c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 17483c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning framebuffer_release(info); 17493c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning } 17503c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 17513c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning kref_put(&dev->kref, ufx_free); /* ref for framebuffer */ 17523c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning kref_put(&dev->kref, ufx_free); /* last ref from kref_init */ 17533c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 17543c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning /* dev has been deallocated. Do not dereference */ 17553c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning } 17563c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 17573c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning return retval; 17583c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning} 17593c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 17603c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinningstatic void ufx_usb_disconnect(struct usb_interface *interface) 17613c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning{ 17623c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning struct ufx_data *dev; 17633c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning struct fb_info *info; 17643c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 17653c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning dev = usb_get_intfdata(interface); 17663c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning info = dev->info; 17673c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 17683c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning pr_debug("USB disconnect starting\n"); 17693c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 17703c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning /* we virtualize until all fb clients release. Then we free */ 17713c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning dev->virtualized = true; 17723c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 17733c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning /* When non-active we'll update virtual framebuffer, but no new urbs */ 17743c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning atomic_set(&dev->usb_active, 0); 17753c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 17763c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning usb_set_intfdata(interface, NULL); 17773c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 17783c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning /* if clients still have us open, will be freed on last close */ 17793c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning if (dev->fb_count == 0) 17803c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning schedule_delayed_work(&dev->free_framebuffer_work, 0); 17813c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 17823c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning /* release reference taken by kref_init in probe() */ 17833c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning kref_put(&dev->kref, ufx_free); 17843c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 17853c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning /* consider ufx_data freed */ 17863c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning} 17873c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 17883c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinningstatic struct usb_driver ufx_driver = { 17893c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning .name = "smscufx", 17903c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning .probe = ufx_usb_probe, 17913c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning .disconnect = ufx_usb_disconnect, 17923c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning .id_table = id_table, 17933c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning}; 17943c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 1795fe7484834bb614c2c205726647635171ce6cc070Greg Kroah-Hartmanmodule_usb_driver(ufx_driver); 17963c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 17973c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinningstatic void ufx_urb_completion(struct urb *urb) 17983c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning{ 17993c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning struct urb_node *unode = urb->context; 18003c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning struct ufx_data *dev = unode->dev; 18013c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning unsigned long flags; 18023c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 18033c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning /* sync/async unlink faults aren't errors */ 18043c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning if (urb->status) { 18053c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning if (!(urb->status == -ENOENT || 18063c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning urb->status == -ECONNRESET || 18073c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning urb->status == -ESHUTDOWN)) { 18083c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning pr_err("%s - nonzero write bulk status received: %d\n", 18093c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning __func__, urb->status); 18103c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning atomic_set(&dev->lost_pixels, 1); 18113c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning } 18123c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning } 18133c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 18143c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning urb->transfer_buffer_length = dev->urbs.size; /* reset to actual */ 18153c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 18163c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning spin_lock_irqsave(&dev->urbs.lock, flags); 18173c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning list_add_tail(&unode->entry, &dev->urbs.list); 18183c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning dev->urbs.available++; 18193c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning spin_unlock_irqrestore(&dev->urbs.lock, flags); 18203c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 18213c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning /* When using fb_defio, we deadlock if up() is called 18223c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning * while another is waiting. So queue to another process */ 18233c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning if (fb_defio) 18243c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning schedule_delayed_work(&unode->release_urb_work, 0); 18253c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning else 18263c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning up(&dev->urbs.limit_sem); 18273c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning} 18283c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 18293c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinningstatic void ufx_free_urb_list(struct ufx_data *dev) 18303c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning{ 18313c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning int count = dev->urbs.count; 18323c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning struct list_head *node; 18333c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning struct urb_node *unode; 18343c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning struct urb *urb; 18353c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning int ret; 18363c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning unsigned long flags; 18373c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 18383c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning pr_debug("Waiting for completes and freeing all render urbs\n"); 18393c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 18403c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning /* keep waiting and freeing, until we've got 'em all */ 18413c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning while (count--) { 18423c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning /* Getting interrupted means a leak, but ok at shutdown*/ 18433c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning ret = down_interruptible(&dev->urbs.limit_sem); 18443c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning if (ret) 18453c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning break; 18463c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 18473c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning spin_lock_irqsave(&dev->urbs.lock, flags); 18483c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 18493c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning node = dev->urbs.list.next; /* have reserved one with sem */ 18503c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning list_del_init(node); 18513c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 18523c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning spin_unlock_irqrestore(&dev->urbs.lock, flags); 18533c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 18543c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning unode = list_entry(node, struct urb_node, entry); 18553c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning urb = unode->urb; 18563c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 18573c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning /* Free each separately allocated piece */ 18583c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning usb_free_coherent(urb->dev, dev->urbs.size, 18593c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning urb->transfer_buffer, urb->transfer_dma); 18603c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning usb_free_urb(urb); 18613c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning kfree(node); 18623c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning } 18633c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning} 18643c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 18653c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinningstatic int ufx_alloc_urb_list(struct ufx_data *dev, int count, size_t size) 18663c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning{ 18673c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning int i = 0; 18683c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning struct urb *urb; 18693c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning struct urb_node *unode; 18703c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning char *buf; 18713c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 18723c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning spin_lock_init(&dev->urbs.lock); 18733c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 18743c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning dev->urbs.size = size; 18753c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning INIT_LIST_HEAD(&dev->urbs.list); 18763c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 18773c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning while (i < count) { 18783c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning unode = kzalloc(sizeof(struct urb_node), GFP_KERNEL); 18793c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning if (!unode) 18803c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning break; 18813c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning unode->dev = dev; 18823c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 18833c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning INIT_DELAYED_WORK(&unode->release_urb_work, 18843c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning ufx_release_urb_work); 18853c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 18863c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning urb = usb_alloc_urb(0, GFP_KERNEL); 18873c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning if (!urb) { 18883c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning kfree(unode); 18893c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning break; 18903c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning } 18913c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning unode->urb = urb; 18923c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 18933c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning buf = usb_alloc_coherent(dev->udev, size, GFP_KERNEL, 18943c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning &urb->transfer_dma); 18953c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning if (!buf) { 18963c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning kfree(unode); 18973c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning usb_free_urb(urb); 18983c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning break; 18993c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning } 19003c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 19013c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning /* urb->transfer_buffer_length set to actual before submit */ 19023c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning usb_fill_bulk_urb(urb, dev->udev, usb_sndbulkpipe(dev->udev, 1), 19033c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning buf, size, ufx_urb_completion, unode); 19043c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; 19053c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 19063c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning list_add_tail(&unode->entry, &dev->urbs.list); 19073c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 19083c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning i++; 19093c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning } 19103c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 19113c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning sema_init(&dev->urbs.limit_sem, i); 19123c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning dev->urbs.count = i; 19133c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning dev->urbs.available = i; 19143c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 19153c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning pr_debug("allocated %d %d byte urbs\n", i, (int) size); 19163c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 19173c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning return i; 19183c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning} 19193c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 19203c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinningstatic struct urb *ufx_get_urb(struct ufx_data *dev) 19213c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning{ 19223c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning int ret = 0; 19233c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning struct list_head *entry; 19243c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning struct urb_node *unode; 19253c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning struct urb *urb = NULL; 19263c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning unsigned long flags; 19273c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 19283c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning /* Wait for an in-flight buffer to complete and get re-queued */ 19293c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning ret = down_timeout(&dev->urbs.limit_sem, GET_URB_TIMEOUT); 19303c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning if (ret) { 19313c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning atomic_set(&dev->lost_pixels, 1); 19323c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning pr_warn("wait for urb interrupted: %x available: %d\n", 19333c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning ret, dev->urbs.available); 19343c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning goto error; 19353c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning } 19363c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 19373c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning spin_lock_irqsave(&dev->urbs.lock, flags); 19383c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 19393c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning BUG_ON(list_empty(&dev->urbs.list)); /* reserved one with limit_sem */ 19403c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning entry = dev->urbs.list.next; 19413c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning list_del_init(entry); 19423c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning dev->urbs.available--; 19433c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 19443c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning spin_unlock_irqrestore(&dev->urbs.lock, flags); 19453c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 19463c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning unode = list_entry(entry, struct urb_node, entry); 19473c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning urb = unode->urb; 19483c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 19493c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinningerror: 19503c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning return urb; 19513c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning} 19523c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 19533c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinningstatic int ufx_submit_urb(struct ufx_data *dev, struct urb *urb, size_t len) 19543c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning{ 19553c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning int ret; 19563c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 19573c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning BUG_ON(len > dev->urbs.size); 19583c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 19593c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning urb->transfer_buffer_length = len; /* set to actual payload len */ 19603c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning ret = usb_submit_urb(urb, GFP_KERNEL); 19613c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning if (ret) { 19623c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning ufx_urb_completion(urb); /* because no one else will */ 19633c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning atomic_set(&dev->lost_pixels, 1); 19643c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning pr_err("usb_submit_urb error %x\n", ret); 19653c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning } 19663c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning return ret; 19673c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning} 19683c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 19693c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinningmodule_param(console, bool, S_IWUSR | S_IRUSR | S_IWGRP | S_IRGRP); 19703c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve GlendinningMODULE_PARM_DESC(console, "Allow fbcon to be used on this display"); 19713c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 19723c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinningmodule_param(fb_defio, bool, S_IWUSR | S_IRUSR | S_IWGRP | S_IRGRP); 19733c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve GlendinningMODULE_PARM_DESC(fb_defio, "Enable fb_defio mmap support"); 19743c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve Glendinning 19753c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve GlendinningMODULE_AUTHOR("Steve Glendinning <steve.glendinning@smsc.com>"); 19763c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve GlendinningMODULE_DESCRIPTION("SMSC UFX kernel framebuffer driver"); 19773c8a63e22a0802fd56380f6ab305b419f18eb6f5Steve GlendinningMODULE_LICENSE("GPL"); 1978