18661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang/* 28661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang * 38661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang * Copyright (c) 2009 Nuvoton technology corporation 48661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang * All rights reserved. 58661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang * 68661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang * This program is free software; you can redistribute it and/or modify 78661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang * it under the terms of the GNU General Public License as published by 88661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang * the Free Software Foundation; either version 2 of the License, or 98661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang * (at your option) any later version. 108661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang * 118661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang * Description: 128661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang * Nuvoton LCD Controller Driver 138661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang * Author: 148661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang * Wang Qiang (rurality.linux@gmail.com) 2009/12/11 158661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang */ 168661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang#include <linux/module.h> 178661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang#include <linux/kernel.h> 18ec03031707a348578c6ded277e5d92eb21de4fceJamie Iles#include <linux/err.h> 198661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang#include <linux/errno.h> 208661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang#include <linux/string.h> 218661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang#include <linux/mm.h> 228661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang#include <linux/tty.h> 238661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang#include <linux/slab.h> 248661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang#include <linux/delay.h> 258661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang#include <linux/fb.h> 268661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang#include <linux/init.h> 278661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang#include <linux/dma-mapping.h> 288661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang#include <linux/interrupt.h> 298661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang#include <linux/workqueue.h> 308661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang#include <linux/wait.h> 318661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang#include <linux/platform_device.h> 328661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang#include <linux/clk.h> 338661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang#include <linux/cpufreq.h> 348661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang#include <linux/io.h> 358661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang#include <linux/pm.h> 368661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang#include <linux/device.h> 378661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang 388661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang#include <mach/map.h> 398661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang#include <mach/regs-clock.h> 408661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang#include <mach/regs-ldm.h> 418661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang#include <mach/fb.h> 428661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang 438661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang#include "nuc900fb.h" 448661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang 458661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang 468661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang/* 478661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang * Initialize the nuc900 video (dual) buffer address 488661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang */ 498661970875d7d27e4de233d357327fffdb4a5e3dWang Qiangstatic void nuc900fb_set_lcdaddr(struct fb_info *info) 508661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang{ 518661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang struct nuc900fb_info *fbi = info->par; 528661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang void __iomem *regs = fbi->io; 538661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang unsigned long vbaddr1, vbaddr2; 548661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang 558661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang vbaddr1 = info->fix.smem_start; 568661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang vbaddr2 = info->fix.smem_start; 578661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang vbaddr2 += info->fix.line_length * info->var.yres; 588661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang 598661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang /* set frambuffer start phy addr*/ 608661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang writel(vbaddr1, regs + REG_LCM_VA_BADDR0); 618661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang writel(vbaddr2, regs + REG_LCM_VA_BADDR1); 628661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang 638661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang writel(fbi->regs.lcd_va_fbctrl, regs + REG_LCM_VA_FBCTRL); 648661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang writel(fbi->regs.lcd_va_scale, regs + REG_LCM_VA_SCALE); 658661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang} 668661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang 678661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang/* 688661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang * calculate divider for lcd div 698661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang */ 708661970875d7d27e4de233d357327fffdb4a5e3dWang Qiangstatic unsigned int nuc900fb_calc_pixclk(struct nuc900fb_info *fbi, 718661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang unsigned long pixclk) 728661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang{ 738661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang unsigned long clk = fbi->clk_rate; 748661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang unsigned long long div; 758661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang 768661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang /* pixclk is in picseconds. our clock is in Hz*/ 778661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang /* div = (clk * pixclk)/10^12 */ 788661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang div = (unsigned long long)clk * pixclk; 798661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang div >>= 12; 808661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang do_div(div, 625 * 625UL * 625); 818661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang 828661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang dev_dbg(fbi->dev, "pixclk %ld, divisor is %lld\n", pixclk, div); 838661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang 848661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang return div; 858661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang} 868661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang 878661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang/* 888661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang * Check the video params of 'var'. 898661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang */ 908661970875d7d27e4de233d357327fffdb4a5e3dWang Qiangstatic int nuc900fb_check_var(struct fb_var_screeninfo *var, 918661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang struct fb_info *info) 928661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang{ 938661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang struct nuc900fb_info *fbi = info->par; 948661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang struct nuc900fb_mach_info *mach_info = fbi->dev->platform_data; 958661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang struct nuc900fb_display *display = NULL; 968661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang struct nuc900fb_display *default_display = mach_info->displays + 978661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang mach_info->default_display; 988661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang int i; 998661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang 1008661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang dev_dbg(fbi->dev, "check_var(var=%p, info=%p)\n", var, info); 1018661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang 1028661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang /* validate x/y resolution */ 1038661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang /* choose default mode if possible */ 1048661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang if (var->xres == default_display->xres && 1058661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang var->yres == default_display->yres && 1068661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang var->bits_per_pixel == default_display->bpp) 1078661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang display = default_display; 1088661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang else 1098661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang for (i = 0; i < mach_info->num_displays; i++) 1108661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang if (var->xres == mach_info->displays[i].xres && 1118661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang var->yres == mach_info->displays[i].yres && 1128661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang var->bits_per_pixel == mach_info->displays[i].bpp) { 1138661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang display = mach_info->displays + i; 1148661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang break; 1158661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang } 1168661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang 1178661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang if (display == NULL) { 1188661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang printk(KERN_ERR "wrong resolution or depth %dx%d at %d bit per pixel\n", 1198661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang var->xres, var->yres, var->bits_per_pixel); 1208661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang return -EINVAL; 1218661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang } 1228661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang 1238661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang /* it should be the same size as the display */ 1248661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang var->xres_virtual = display->xres; 1258661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang var->yres_virtual = display->yres; 1268661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang var->height = display->height; 1278661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang var->width = display->width; 1288661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang 1298661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang /* copy lcd settings */ 1308661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang var->pixclock = display->pixclock; 1318661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang var->left_margin = display->left_margin; 1328661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang var->right_margin = display->right_margin; 1338661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang var->upper_margin = display->upper_margin; 1348661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang var->lower_margin = display->lower_margin; 1358661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang var->vsync_len = display->vsync_len; 1368661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang var->hsync_len = display->hsync_len; 1378661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang 1388661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang var->transp.offset = 0; 1398661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang var->transp.length = 0; 1408661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang 1418661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang fbi->regs.lcd_dccs = display->dccs; 1428661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang fbi->regs.lcd_device_ctrl = display->devctl; 1438661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang fbi->regs.lcd_va_fbctrl = display->fbctrl; 1448661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang fbi->regs.lcd_va_scale = display->scale; 1458661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang 1468661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang /* set R/G/B possions */ 1478661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang switch (var->bits_per_pixel) { 1488661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang case 1: 1498661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang case 2: 1508661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang case 4: 1518661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang case 8: 1528661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang default: 1538661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang var->red.offset = 0; 1548661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang var->red.length = var->bits_per_pixel; 1558661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang var->green = var->red; 1568661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang var->blue = var->red; 1578661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang break; 1588661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang case 12: 1598661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang var->red.length = 4; 1608661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang var->green.length = 4; 1618661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang var->blue.length = 4; 1628661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang var->red.offset = 8; 1638661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang var->green.offset = 4; 1648661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang var->blue.offset = 0; 1658661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang break; 1668661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang case 16: 1678661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang var->red.length = 5; 1688661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang var->green.length = 6; 1698661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang var->blue.length = 5; 1708661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang var->red.offset = 11; 1718661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang var->green.offset = 5; 1728661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang var->blue.offset = 0; 1738661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang break; 1748661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang case 18: 1758661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang var->red.length = 6; 1768661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang var->green.length = 6; 1778661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang var->blue.length = 6; 1788661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang var->red.offset = 12; 1798661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang var->green.offset = 6; 1808661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang var->blue.offset = 0; 1818661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang break; 1828661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang case 32: 1838661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang var->red.length = 8; 1848661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang var->green.length = 8; 1858661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang var->blue.length = 8; 1868661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang var->red.offset = 16; 1878661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang var->green.offset = 8; 1888661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang var->blue.offset = 0; 1898661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang break; 1908661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang } 1918661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang 1928661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang return 0; 1938661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang} 1948661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang 1958661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang/* 1968661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang * Calculate lcd register values from var setting & save into hw 1978661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang */ 1988661970875d7d27e4de233d357327fffdb4a5e3dWang Qiangstatic void nuc900fb_calculate_lcd_regs(const struct fb_info *info, 1998661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang struct nuc900fb_hw *regs) 2008661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang{ 2018661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang const struct fb_var_screeninfo *var = &info->var; 2028661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang int vtt = var->height + var->upper_margin + var->lower_margin; 2038661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang int htt = var->width + var->left_margin + var->right_margin; 2048661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang int hsync = var->width + var->right_margin; 2058661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang int vsync = var->height + var->lower_margin; 2068661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang 2078661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang regs->lcd_crtc_size = LCM_CRTC_SIZE_VTTVAL(vtt) | 2088661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang LCM_CRTC_SIZE_HTTVAL(htt); 2098661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang regs->lcd_crtc_dend = LCM_CRTC_DEND_VDENDVAL(var->height) | 2108661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang LCM_CRTC_DEND_HDENDVAL(var->width); 2118661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang regs->lcd_crtc_hr = LCM_CRTC_HR_EVAL(var->width + 5) | 2128661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang LCM_CRTC_HR_SVAL(var->width + 1); 2138661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang regs->lcd_crtc_hsync = LCM_CRTC_HSYNC_EVAL(hsync + var->hsync_len) | 2148661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang LCM_CRTC_HSYNC_SVAL(hsync); 2158661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang regs->lcd_crtc_vr = LCM_CRTC_VR_EVAL(vsync + var->vsync_len) | 2168661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang LCM_CRTC_VR_SVAL(vsync); 2178661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang 2188661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang} 2198661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang 2208661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang/* 2218661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang * Activate (set) the controller from the given framebuffer 2228661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang * information 2238661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang */ 2248661970875d7d27e4de233d357327fffdb4a5e3dWang Qiangstatic void nuc900fb_activate_var(struct fb_info *info) 2258661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang{ 2268661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang struct nuc900fb_info *fbi = info->par; 2278661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang void __iomem *regs = fbi->io; 2288661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang struct fb_var_screeninfo *var = &info->var; 2298661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang int clkdiv; 2308661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang 2318661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang clkdiv = nuc900fb_calc_pixclk(fbi, var->pixclock) - 1; 2328661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang if (clkdiv < 0) 2338661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang clkdiv = 0; 2348661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang 2358661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang nuc900fb_calculate_lcd_regs(info, &fbi->regs); 2368661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang 2378661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang /* set the new lcd registers*/ 2388661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang 2398661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang dev_dbg(fbi->dev, "new lcd register set:\n"); 2408661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang dev_dbg(fbi->dev, "dccs = 0x%08x\n", fbi->regs.lcd_dccs); 2418661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang dev_dbg(fbi->dev, "dev_ctl = 0x%08x\n", fbi->regs.lcd_device_ctrl); 2428661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang dev_dbg(fbi->dev, "crtc_size = 0x%08x\n", fbi->regs.lcd_crtc_size); 2438661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang dev_dbg(fbi->dev, "crtc_dend = 0x%08x\n", fbi->regs.lcd_crtc_dend); 2448661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang dev_dbg(fbi->dev, "crtc_hr = 0x%08x\n", fbi->regs.lcd_crtc_hr); 2458661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang dev_dbg(fbi->dev, "crtc_hsync = 0x%08x\n", fbi->regs.lcd_crtc_hsync); 2468661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang dev_dbg(fbi->dev, "crtc_vr = 0x%08x\n", fbi->regs.lcd_crtc_vr); 2478661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang 2488661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang writel(fbi->regs.lcd_device_ctrl, regs + REG_LCM_DEV_CTRL); 2498661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang writel(fbi->regs.lcd_crtc_size, regs + REG_LCM_CRTC_SIZE); 2508661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang writel(fbi->regs.lcd_crtc_dend, regs + REG_LCM_CRTC_DEND); 2518661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang writel(fbi->regs.lcd_crtc_hr, regs + REG_LCM_CRTC_HR); 2528661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang writel(fbi->regs.lcd_crtc_hsync, regs + REG_LCM_CRTC_HSYNC); 2538661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang writel(fbi->regs.lcd_crtc_vr, regs + REG_LCM_CRTC_VR); 2548661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang 2558661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang /* set lcd address pointers */ 2568661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang nuc900fb_set_lcdaddr(info); 2578661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang 2588661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang writel(fbi->regs.lcd_dccs, regs + REG_LCM_DCCS); 2598661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang} 2608661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang 2618661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang/* 2628661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang * Alters the hardware state. 2638661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang * 2648661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang */ 2658661970875d7d27e4de233d357327fffdb4a5e3dWang Qiangstatic int nuc900fb_set_par(struct fb_info *info) 2668661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang{ 2678661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang struct fb_var_screeninfo *var = &info->var; 2688661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang 2698661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang switch (var->bits_per_pixel) { 2708661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang case 32: 2718661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang case 24: 2728661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang case 18: 2738661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang case 16: 2748661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang case 12: 2758661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang info->fix.visual = FB_VISUAL_TRUECOLOR; 2768661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang break; 2778661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang case 1: 2788661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang info->fix.visual = FB_VISUAL_MONO01; 2798661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang break; 2808661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang default: 2818661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang info->fix.visual = FB_VISUAL_PSEUDOCOLOR; 2828661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang break; 2838661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang } 2848661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang 2858661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang info->fix.line_length = (var->xres_virtual * var->bits_per_pixel) / 8; 2868661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang 2878661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang /* activate this new configuration */ 2888661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang nuc900fb_activate_var(info); 2898661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang return 0; 2908661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang} 2918661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang 2928661970875d7d27e4de233d357327fffdb4a5e3dWang Qiangstatic inline unsigned int chan_to_field(unsigned int chan, 2938661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang struct fb_bitfield *bf) 2948661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang{ 2958661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang chan &= 0xffff; 2968661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang chan >>= 16 - bf->length; 2978661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang return chan << bf->offset; 2988661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang} 2998661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang 3008661970875d7d27e4de233d357327fffdb4a5e3dWang Qiangstatic int nuc900fb_setcolreg(unsigned regno, 3018661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang unsigned red, unsigned green, unsigned blue, 3028661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang unsigned transp, struct fb_info *info) 3038661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang{ 3048661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang unsigned int val; 3058661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang 3068661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang switch (info->fix.visual) { 3078661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang case FB_VISUAL_TRUECOLOR: 3088661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang /* true-colour, use pseuo-palette */ 3098661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang if (regno < 16) { 3108661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang u32 *pal = info->pseudo_palette; 3118661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang 3128661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang val = chan_to_field(red, &info->var.red); 3138661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang val |= chan_to_field(green, &info->var.green); 3148661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang val |= chan_to_field(blue, &info->var.blue); 3158661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang pal[regno] = val; 3168661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang } 3178661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang break; 3188661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang 3198661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang default: 3208661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang return 1; /* unknown type */ 3218661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang } 3228661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang return 0; 3238661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang} 3248661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang 3258661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang/** 3268661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang * nuc900fb_blank 3278661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang * 3288661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang */ 3298661970875d7d27e4de233d357327fffdb4a5e3dWang Qiangstatic int nuc900fb_blank(int blank_mode, struct fb_info *info) 3308661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang{ 3318661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang 3328661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang return 0; 3338661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang} 3348661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang 3358661970875d7d27e4de233d357327fffdb4a5e3dWang Qiangstatic struct fb_ops nuc900fb_ops = { 3368661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang .owner = THIS_MODULE, 3378661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang .fb_check_var = nuc900fb_check_var, 3388661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang .fb_set_par = nuc900fb_set_par, 3398661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang .fb_blank = nuc900fb_blank, 3408661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang .fb_setcolreg = nuc900fb_setcolreg, 3418661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang .fb_fillrect = cfb_fillrect, 3428661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang .fb_copyarea = cfb_copyarea, 3438661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang .fb_imageblit = cfb_imageblit, 3448661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang}; 3458661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang 3468661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang 3478661970875d7d27e4de233d357327fffdb4a5e3dWang Qiangstatic inline void modify_gpio(void __iomem *reg, 3488661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang unsigned long set, unsigned long mask) 3498661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang{ 3508661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang unsigned long tmp; 3518661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang tmp = readl(reg) & ~mask; 3528661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang writel(tmp | set, reg); 3538661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang} 3548661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang 3558661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang/* 3568661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang * Initialise LCD-related registers 3578661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang */ 3588661970875d7d27e4de233d357327fffdb4a5e3dWang Qiangstatic int nuc900fb_init_registers(struct fb_info *info) 3598661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang{ 3608661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang struct nuc900fb_info *fbi = info->par; 3618661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang struct nuc900fb_mach_info *mach_info = fbi->dev->platform_data; 3628661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang void __iomem *regs = fbi->io; 3638661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang 3648661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang /*reset the display engine*/ 3658661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang writel(0, regs + REG_LCM_DCCS); 3668661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang writel(readl(regs + REG_LCM_DCCS) | LCM_DCCS_ENG_RST, 3678661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang regs + REG_LCM_DCCS); 3688661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang ndelay(100); 3698661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang writel(readl(regs + REG_LCM_DCCS) & (~LCM_DCCS_ENG_RST), 3708661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang regs + REG_LCM_DCCS); 3718661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang ndelay(100); 3728661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang 3738661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang writel(0, regs + REG_LCM_DEV_CTRL); 3748661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang 3758661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang /* config gpio output */ 3768661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang modify_gpio(W90X900_VA_GPIO + 0x54, mach_info->gpio_dir, 3778661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang mach_info->gpio_dir_mask); 3788661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang modify_gpio(W90X900_VA_GPIO + 0x58, mach_info->gpio_data, 3798661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang mach_info->gpio_data_mask); 3808661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang 3818661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang return 0; 3828661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang} 3838661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang 3848661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang 3858661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang/* 3868661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang * Alloc the SDRAM region of NUC900 for the frame buffer. 3878661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang * The buffer should be a non-cached, non-buffered, memory region 3888661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang * to allow palette and pixel writes without flushing the cache. 3898661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang */ 3908661970875d7d27e4de233d357327fffdb4a5e3dWang Qiangstatic int __init nuc900fb_map_video_memory(struct fb_info *info) 3918661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang{ 3928661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang struct nuc900fb_info *fbi = info->par; 3938661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang dma_addr_t map_dma; 3948661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang unsigned long map_size = PAGE_ALIGN(info->fix.smem_len); 3958661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang 3968661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang dev_dbg(fbi->dev, "nuc900fb_map_video_memory(fbi=%p) map_size %lu\n", 3978661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang fbi, map_size); 3988661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang 3998661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang info->screen_base = dma_alloc_writecombine(fbi->dev, map_size, 4008661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang &map_dma, GFP_KERNEL); 4018661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang 4028661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang if (!info->screen_base) 4038661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang return -ENOMEM; 4048661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang 4058661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang memset(info->screen_base, 0x00, map_size); 4068661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang info->fix.smem_start = map_dma; 4078661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang 4088661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang return 0; 4098661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang} 4108661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang 4118661970875d7d27e4de233d357327fffdb4a5e3dWang Qiangstatic inline void nuc900fb_unmap_video_memory(struct fb_info *info) 4128661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang{ 4138661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang struct nuc900fb_info *fbi = info->par; 4148661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang dma_free_writecombine(fbi->dev, PAGE_ALIGN(info->fix.smem_len), 4158661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang info->screen_base, info->fix.smem_start); 4168661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang} 4178661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang 4188661970875d7d27e4de233d357327fffdb4a5e3dWang Qiangstatic irqreturn_t nuc900fb_irqhandler(int irq, void *dev_id) 4198661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang{ 4208661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang struct nuc900fb_info *fbi = dev_id; 4218661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang void __iomem *regs = fbi->io; 4228661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang void __iomem *irq_base = fbi->irq_base; 4238661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang unsigned long lcdirq = readl(regs + REG_LCM_INT_CS); 4248661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang 4258661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang if (lcdirq & LCM_INT_CS_DISP_F_STATUS) { 4268661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang writel(readl(irq_base) | 1<<30, irq_base); 4278661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang 4288661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang /* wait VA_EN low */ 4298661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang if ((readl(regs + REG_LCM_DCCS) & 4308661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang LCM_DCCS_SINGLE) == LCM_DCCS_SINGLE) 4318661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang while ((readl(regs + REG_LCM_DCCS) & 4328661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang LCM_DCCS_VA_EN) == LCM_DCCS_VA_EN) 4338661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang ; 4348661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang /* display_out-enable */ 4358661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang writel(readl(regs + REG_LCM_DCCS) | LCM_DCCS_DISP_OUT_EN, 4368661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang regs + REG_LCM_DCCS); 4378661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang /* va-enable*/ 4388661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang writel(readl(regs + REG_LCM_DCCS) | LCM_DCCS_VA_EN, 4398661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang regs + REG_LCM_DCCS); 4408661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang } else if (lcdirq & LCM_INT_CS_UNDERRUN_INT) { 4418661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang writel(readl(irq_base) | LCM_INT_CS_UNDERRUN_INT, irq_base); 4428661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang } else if (lcdirq & LCM_INT_CS_BUS_ERROR_INT) { 4438661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang writel(readl(irq_base) | LCM_INT_CS_BUS_ERROR_INT, irq_base); 4448661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang } 4458661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang 4468661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang return IRQ_HANDLED; 4478661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang} 4488661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang 4498661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang#ifdef CONFIG_CPU_FREQ 4508661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang 4518661970875d7d27e4de233d357327fffdb4a5e3dWang Qiangstatic int nuc900fb_cpufreq_transition(struct notifier_block *nb, 4528661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang unsigned long val, void *data) 4538661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang{ 4548661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang struct nuc900fb_info *info; 4558661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang struct fb_info *fbinfo; 4568661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang long delta_f; 4578661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang info = container_of(nb, struct nuc900fb_info, freq_transition); 4588661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang fbinfo = platform_get_drvdata(to_platform_device(info->dev)); 4598661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang 4608661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang delta_f = info->clk_rate - clk_get_rate(info->clk); 4618661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang 4628661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang if ((val == CPUFREQ_POSTCHANGE && delta_f > 0) || 4638661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang (val == CPUFREQ_PRECHANGE && delta_f < 0)) { 4648661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang info->clk_rate = clk_get_rate(info->clk); 4658661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang nuc900fb_activate_var(fbinfo); 4668661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang } 4678661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang 4688661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang return 0; 4698661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang} 4708661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang 4718661970875d7d27e4de233d357327fffdb4a5e3dWang Qiangstatic inline int nuc900fb_cpufreq_register(struct nuc900fb_info *fbi) 4728661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang{ 4738661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang fbi->freq_transition.notifier_call = nuc900fb_cpufreq_transition; 4748661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang return cpufreq_register_notifier(&fbi->freq_transition, 4758661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang CPUFREQ_TRANSITION_NOTIFIER); 4768661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang} 4778661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang 4788661970875d7d27e4de233d357327fffdb4a5e3dWang Qiangstatic inline void nuc900fb_cpufreq_deregister(struct nuc900fb_info *fbi) 4798661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang{ 4808661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang cpufreq_unregister_notifier(&fbi->freq_transition, 4818661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang CPUFREQ_TRANSITION_NOTIFIER); 4828661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang} 4838661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang#else 4848661970875d7d27e4de233d357327fffdb4a5e3dWang Qiangstatic inline int nuc900fb_cpufreq_transition(struct notifier_block *nb, 4858661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang unsigned long val, void *data) 4868661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang{ 4878661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang return 0; 4888661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang} 4898661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang 4908661970875d7d27e4de233d357327fffdb4a5e3dWang Qiangstatic inline int nuc900fb_cpufreq_register(struct nuc900fb_info *fbi) 4918661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang{ 4928661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang return 0; 4938661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang} 4948661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang 4958661970875d7d27e4de233d357327fffdb4a5e3dWang Qiangstatic inline void nuc900fb_cpufreq_deregister(struct nuc900fb_info *info) 4968661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang{ 4978661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang} 4988661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang#endif 4998661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang 5008661970875d7d27e4de233d357327fffdb4a5e3dWang Qiangstatic char driver_name[] = "nuc900fb"; 5018661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang 5028661970875d7d27e4de233d357327fffdb4a5e3dWang Qiangstatic int __devinit nuc900fb_probe(struct platform_device *pdev) 5038661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang{ 5048661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang struct nuc900fb_info *fbi; 5058661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang struct nuc900fb_display *display; 5068661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang struct fb_info *fbinfo; 5078661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang struct nuc900fb_mach_info *mach_info; 5088661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang struct resource *res; 5098661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang int ret; 5108661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang int irq; 5118661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang int i; 5128661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang int size; 5138661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang 5148661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang dev_dbg(&pdev->dev, "devinit\n"); 5158661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang mach_info = pdev->dev.platform_data; 5168661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang if (mach_info == NULL) { 5178661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang dev_err(&pdev->dev, 5188661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang "no platform data for lcd, cannot attach\n"); 5198661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang return -EINVAL; 5208661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang } 5218661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang 5228661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang if (mach_info->default_display > mach_info->num_displays) { 5238661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang dev_err(&pdev->dev, 5248661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang "default display No. is %d but only %d displays \n", 5258661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang mach_info->default_display, mach_info->num_displays); 5268661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang return -EINVAL; 5278661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang } 5288661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang 5298661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang 5308661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang display = mach_info->displays + mach_info->default_display; 5318661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang 5328661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang irq = platform_get_irq(pdev, 0); 5338661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang if (irq < 0) { 5348661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang dev_err(&pdev->dev, "no irq for device\n"); 5358661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang return -ENOENT; 5368661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang } 5378661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang 5388661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang fbinfo = framebuffer_alloc(sizeof(struct nuc900fb_info), &pdev->dev); 5398661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang if (!fbinfo) 5408661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang return -ENOMEM; 5418661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang 5428661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang platform_set_drvdata(pdev, fbinfo); 5438661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang 5448661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang fbi = fbinfo->par; 5458661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang fbi->dev = &pdev->dev; 5468661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang 5478661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang#ifdef CONFIG_CPU_NUC950 5488661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang fbi->drv_type = LCDDRV_NUC950; 5498661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang#endif 5508661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang 5518661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang res = platform_get_resource(pdev, IORESOURCE_MEM, 0); 5528661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang 55328f65c11f2ffb3957259dece647a24f8ad2e241bJoe Perches size = resource_size(res); 5548661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang fbi->mem = request_mem_region(res->start, size, pdev->name); 5558661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang if (fbi->mem == NULL) { 5568661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang dev_err(&pdev->dev, "failed to alloc memory region\n"); 5578661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang ret = -ENOENT; 5588661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang goto free_fb; 5598661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang } 5608661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang 5618661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang fbi->io = ioremap(res->start, size); 5628661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang if (fbi->io == NULL) { 5638661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang dev_err(&pdev->dev, "ioremap() of lcd registers failed\n"); 5648661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang ret = -ENXIO; 5658661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang goto release_mem_region; 5668661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang } 5678661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang 5688661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang fbi->irq_base = fbi->io + REG_LCM_INT_CS; 5698661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang 5708661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang 5718661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang /* Stop the LCD */ 5728661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang writel(0, fbi->io + REG_LCM_DCCS); 5738661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang 5748661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang /* fill the fbinfo*/ 5758661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang strcpy(fbinfo->fix.id, driver_name); 5768661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang fbinfo->fix.type = FB_TYPE_PACKED_PIXELS; 5778661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang fbinfo->fix.type_aux = 0; 5788661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang fbinfo->fix.xpanstep = 0; 5798661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang fbinfo->fix.ypanstep = 0; 5808661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang fbinfo->fix.ywrapstep = 0; 5818661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang fbinfo->fix.accel = FB_ACCEL_NONE; 5828661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang fbinfo->var.nonstd = 0; 5838661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang fbinfo->var.activate = FB_ACTIVATE_NOW; 5848661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang fbinfo->var.accel_flags = 0; 5858661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang fbinfo->var.vmode = FB_VMODE_NONINTERLACED; 5868661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang fbinfo->fbops = &nuc900fb_ops; 5878661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang fbinfo->flags = FBINFO_FLAG_DEFAULT; 5888661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang fbinfo->pseudo_palette = &fbi->pseudo_pal; 5898661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang 590f8798ccbefc0e4ef7438c080b7ba0410738c8cfaYong Zhang ret = request_irq(irq, nuc900fb_irqhandler, 0, 5918661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang pdev->name, fbinfo); 5928661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang if (ret) { 5938661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang dev_err(&pdev->dev, "cannot register irq handler %d -err %d\n", 5948661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang irq, ret); 5958661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang ret = -EBUSY; 5968661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang goto release_regs; 5978661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang } 5988661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang 5998661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang fbi->clk = clk_get(&pdev->dev, NULL); 600ec03031707a348578c6ded277e5d92eb21de4fceJamie Iles if (IS_ERR(fbi->clk)) { 6018661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang printk(KERN_ERR "nuc900-lcd:failed to get lcd clock source\n"); 602ec03031707a348578c6ded277e5d92eb21de4fceJamie Iles ret = PTR_ERR(fbi->clk); 6038661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang goto release_irq; 6048661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang } 6058661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang 6068661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang clk_enable(fbi->clk); 6078661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang dev_dbg(&pdev->dev, "got and enabled clock\n"); 6088661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang 6098661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang fbi->clk_rate = clk_get_rate(fbi->clk); 6108661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang 6118661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang /* calutate the video buffer size */ 6128661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang for (i = 0; i < mach_info->num_displays; i++) { 6138661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang unsigned long smem_len = mach_info->displays[i].xres; 6148661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang smem_len *= mach_info->displays[i].yres; 6158661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang smem_len *= mach_info->displays[i].bpp; 6168661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang smem_len >>= 3; 6178661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang if (fbinfo->fix.smem_len < smem_len) 6188661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang fbinfo->fix.smem_len = smem_len; 6198661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang } 6208661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang 6218661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang /* Initialize Video Memory */ 6228661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang ret = nuc900fb_map_video_memory(fbinfo); 6238661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang if (ret) { 6248661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang printk(KERN_ERR "Failed to allocate video RAM: %x\n", ret); 6258661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang goto release_clock; 6268661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang } 6278661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang 6288661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang dev_dbg(&pdev->dev, "got video memory\n"); 6298661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang 6308661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang fbinfo->var.xres = display->xres; 6318661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang fbinfo->var.yres = display->yres; 6328661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang fbinfo->var.bits_per_pixel = display->bpp; 6338661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang 6348661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang nuc900fb_init_registers(fbinfo); 6358661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang 6368661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang nuc900fb_check_var(&fbinfo->var, fbinfo); 6378661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang 6388661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang ret = nuc900fb_cpufreq_register(fbi); 6398661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang if (ret < 0) { 6408661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang dev_err(&pdev->dev, "Failed to register cpufreq\n"); 6418661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang goto free_video_memory; 6428661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang } 6438661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang 6448661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang ret = register_framebuffer(fbinfo); 6458661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang if (ret) { 6468661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang printk(KERN_ERR "failed to register framebuffer device: %d\n", 6478661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang ret); 6488661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang goto free_cpufreq; 6498661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang } 6508661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang 6518661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang printk(KERN_INFO "fb%d: %s frame buffer device\n", 6528661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang fbinfo->node, fbinfo->fix.id); 6538661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang 6548661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang return 0; 6558661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang 6568661970875d7d27e4de233d357327fffdb4a5e3dWang Qiangfree_cpufreq: 6578661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang nuc900fb_cpufreq_deregister(fbi); 6588661970875d7d27e4de233d357327fffdb4a5e3dWang Qiangfree_video_memory: 6598661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang nuc900fb_unmap_video_memory(fbinfo); 6608661970875d7d27e4de233d357327fffdb4a5e3dWang Qiangrelease_clock: 6618661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang clk_disable(fbi->clk); 6628661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang clk_put(fbi->clk); 6638661970875d7d27e4de233d357327fffdb4a5e3dWang Qiangrelease_irq: 6648661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang free_irq(irq, fbi); 6658661970875d7d27e4de233d357327fffdb4a5e3dWang Qiangrelease_regs: 6668661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang iounmap(fbi->io); 6678661970875d7d27e4de233d357327fffdb4a5e3dWang Qiangrelease_mem_region: 668a42dcb883d948a5f26c005f0e401e8297aa05f76Dan Carpenter release_mem_region(res->start, size); 6698661970875d7d27e4de233d357327fffdb4a5e3dWang Qiangfree_fb: 6708661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang framebuffer_release(fbinfo); 6718661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang return ret; 6728661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang} 6738661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang 6748661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang/* 6758661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang * shutdown the lcd controller 6768661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang */ 6778661970875d7d27e4de233d357327fffdb4a5e3dWang Qiangstatic void nuc900fb_stop_lcd(struct fb_info *info) 6788661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang{ 6798661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang struct nuc900fb_info *fbi = info->par; 6808661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang void __iomem *regs = fbi->io; 6818661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang 6828661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang writel((~LCM_DCCS_DISP_INT_EN) | (~LCM_DCCS_VA_EN) | (~LCM_DCCS_OSD_EN), 6838661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang regs + REG_LCM_DCCS); 6848661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang} 6858661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang 6868661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang/* 6878661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang * Cleanup 6888661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang */ 6898661970875d7d27e4de233d357327fffdb4a5e3dWang Qiangstatic int nuc900fb_remove(struct platform_device *pdev) 6908661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang{ 6918661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang struct fb_info *fbinfo = platform_get_drvdata(pdev); 6928661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang struct nuc900fb_info *fbi = fbinfo->par; 6938661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang int irq; 6948661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang 6958661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang nuc900fb_stop_lcd(fbinfo); 6968661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang msleep(1); 6978661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang 6986c9571f4b759717e1c938cbc6b53ec8ce5813245Axel Lin unregister_framebuffer(fbinfo); 6996c9571f4b759717e1c938cbc6b53ec8ce5813245Axel Lin nuc900fb_cpufreq_deregister(fbi); 7008661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang nuc900fb_unmap_video_memory(fbinfo); 7018661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang 7028661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang iounmap(fbi->io); 7038661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang 7048661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang irq = platform_get_irq(pdev, 0); 7058661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang free_irq(irq, fbi); 7068661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang 7078661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang release_resource(fbi->mem); 7088661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang kfree(fbi->mem); 7098661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang 7108661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang platform_set_drvdata(pdev, NULL); 7118661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang framebuffer_release(fbinfo); 7128661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang 7138661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang return 0; 7148661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang} 7158661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang 7168661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang#ifdef CONFIG_PM 7178661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang 7188661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang/* 7198661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang * suspend and resume support for the lcd controller 7208661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang */ 7218661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang 7228661970875d7d27e4de233d357327fffdb4a5e3dWang Qiangstatic int nuc900fb_suspend(struct platform_device *dev, pm_message_t state) 7238661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang{ 7248661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang struct fb_info *fbinfo = platform_get_drvdata(dev); 7258661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang struct nuc900fb_info *info = fbinfo->par; 7268661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang 727d10df505f81064cf983fb3c5111b004d181a10f5Axel Lin nuc900fb_stop_lcd(fbinfo); 7288661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang msleep(1); 7298661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang clk_disable(info->clk); 7308661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang return 0; 7318661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang} 7328661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang 7338661970875d7d27e4de233d357327fffdb4a5e3dWang Qiangstatic int nuc900fb_resume(struct platform_device *dev) 7348661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang{ 7358661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang struct fb_info *fbinfo = platform_get_drvdata(dev); 7368661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang struct nuc900fb_info *fbi = fbinfo->par; 7378661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang 7388661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang printk(KERN_INFO "nuc900fb resume\n"); 7398661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang 7408661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang clk_enable(fbi->clk); 7418661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang msleep(1); 7428661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang 7438661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang nuc900fb_init_registers(fbinfo); 744d10df505f81064cf983fb3c5111b004d181a10f5Axel Lin nuc900fb_activate_var(fbinfo); 7458661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang 7468661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang return 0; 7478661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang} 7488661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang 7498661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang#else 7508661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang#define nuc900fb_suspend NULL 7518661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang#define nuc900fb_resume NULL 7528661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang#endif 7538661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang 7548661970875d7d27e4de233d357327fffdb4a5e3dWang Qiangstatic struct platform_driver nuc900fb_driver = { 7558661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang .probe = nuc900fb_probe, 7568661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang .remove = nuc900fb_remove, 7578661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang .suspend = nuc900fb_suspend, 7588661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang .resume = nuc900fb_resume, 7598661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang .driver = { 7608661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang .name = "nuc900-lcd", 7618661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang .owner = THIS_MODULE, 7628661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang }, 7638661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang}; 7648661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang 7654277f2c4667187cbbdd3da3be31ee681bc6b8300Axel Linmodule_platform_driver(nuc900fb_driver); 7668661970875d7d27e4de233d357327fffdb4a5e3dWang Qiang 7678661970875d7d27e4de233d357327fffdb4a5e3dWang QiangMODULE_DESCRIPTION("Framebuffer driver for the NUC900"); 7688661970875d7d27e4de233d357327fffdb4a5e3dWang QiangMODULE_LICENSE("GPL"); 769