1/* 2 * tw68 driver common header file 3 * 4 * Much of this code is derived from the cx88 and sa7134 drivers, which 5 * were in turn derived from the bt87x driver. The original work was by 6 * Gerd Knorr; more recently the code was enhanced by Mauro Carvalho Chehab, 7 * Hans Verkuil, Andy Walls and many others. Their work is gratefully 8 * acknowledged. Full credit goes to them - any problems within this code 9 * are mine. 10 * 11 * Copyright (C) 2009 William M. Brack 12 * 13 * Refactored and updated to the latest v4l core frameworks: 14 * 15 * Copyright (C) 2014 Hans Verkuil <hverkuil@xs4all.nl> 16 * 17 * This program is free software; you can redistribute it and/or modify 18 * it under the terms of the GNU General Public License as published by 19 * the Free Software Foundation; either version 2 of the License, or 20 * (at your option) any later version. 21 * 22 * This program is distributed in the hope that it will be useful, 23 * but WITHOUT ANY WARRANTY; without even the implied warranty of 24 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 25 * GNU General Public License for more details. 26 */ 27 28#include <linux/version.h> 29#include <linux/pci.h> 30#include <linux/videodev2.h> 31#include <linux/notifier.h> 32#include <linux/delay.h> 33#include <linux/mutex.h> 34#include <linux/io.h> 35 36#include <media/v4l2-common.h> 37#include <media/v4l2-ioctl.h> 38#include <media/v4l2-ctrls.h> 39#include <media/v4l2-device.h> 40#include <media/videobuf2-dma-sg.h> 41 42#include "tw68-reg.h" 43 44#define UNSET (-1U) 45 46/* system vendor and device ID's */ 47#define PCI_VENDOR_ID_TECHWELL 0x1797 48#define PCI_DEVICE_ID_6800 0x6800 49#define PCI_DEVICE_ID_6801 0x6801 50#define PCI_DEVICE_ID_AUDIO2 0x6802 51#define PCI_DEVICE_ID_TS3 0x6803 52#define PCI_DEVICE_ID_6804 0x6804 53#define PCI_DEVICE_ID_AUDIO5 0x6805 54#define PCI_DEVICE_ID_TS6 0x6806 55 56/* tw6816 based cards */ 57#define PCI_DEVICE_ID_6816_1 0x6810 58#define PCI_DEVICE_ID_6816_2 0x6811 59#define PCI_DEVICE_ID_6816_3 0x6812 60#define PCI_DEVICE_ID_6816_4 0x6813 61 62#define TW68_NORMS ( \ 63 V4L2_STD_NTSC | V4L2_STD_PAL | V4L2_STD_SECAM | \ 64 V4L2_STD_PAL_M | V4L2_STD_PAL_Nc | V4L2_STD_PAL_60) 65 66#define TW68_VID_INTS (TW68_FFERR | TW68_PABORT | TW68_DMAPERR | \ 67 TW68_FFOF | TW68_DMAPI) 68/* TW6800 chips have trouble with these, so we don't set them for that chip */ 69#define TW68_VID_INTSX (TW68_FDMIS | TW68_HLOCK | TW68_VLOCK) 70 71#define TW68_I2C_INTS (TW68_SBERR | TW68_SBDONE | TW68_SBERR2 | \ 72 TW68_SBDONE2) 73 74enum tw68_decoder_type { 75 TW6800, 76 TW6801, 77 TW6804, 78 TWXXXX, 79}; 80 81/* ----------------------------------------------------------- */ 82/* static data */ 83 84struct tw68_tvnorm { 85 char *name; 86 v4l2_std_id id; 87 88 /* video decoder */ 89 u32 sync_control; 90 u32 luma_control; 91 u32 chroma_ctrl1; 92 u32 chroma_gain; 93 u32 chroma_ctrl2; 94 u32 vgate_misc; 95 96 /* video scaler */ 97 u32 h_delay; 98 u32 h_delay0; /* for TW6800 */ 99 u32 h_start; 100 u32 h_stop; 101 u32 v_delay; 102 u32 video_v_start; 103 u32 video_v_stop; 104 u32 vbi_v_start_0; 105 u32 vbi_v_stop_0; 106 u32 vbi_v_start_1; 107 108 /* Techwell specific */ 109 u32 format; 110}; 111 112struct tw68_format { 113 char *name; 114 u32 fourcc; 115 u32 depth; 116 u32 twformat; 117}; 118 119/* ----------------------------------------------------------- */ 120/* card configuration */ 121 122#define TW68_BOARD_NOAUTO UNSET 123#define TW68_BOARD_UNKNOWN 0 124#define TW68_BOARD_GENERIC_6802 1 125 126#define TW68_MAXBOARDS 16 127#define TW68_INPUT_MAX 4 128 129/* ----------------------------------------------------------- */ 130/* device / file handle status */ 131 132#define BUFFER_TIMEOUT msecs_to_jiffies(500) /* 0.5 seconds */ 133 134struct tw68_dev; /* forward delclaration */ 135 136/* buffer for one video/vbi/ts frame */ 137struct tw68_buf { 138 struct vb2_buffer vb; 139 struct list_head list; 140 141 unsigned int size; 142 __le32 *cpu; 143 __le32 *jmp; 144 dma_addr_t dma; 145}; 146 147struct tw68_fmt { 148 char *name; 149 u32 fourcc; /* v4l2 format id */ 150 int depth; 151 int flags; 152 u32 twformat; 153}; 154 155/* global device status */ 156struct tw68_dev { 157 struct mutex lock; 158 spinlock_t slock; 159 u16 instance; 160 struct v4l2_device v4l2_dev; 161 162 /* various device info */ 163 enum tw68_decoder_type vdecoder; 164 struct video_device vdev; 165 struct v4l2_ctrl_handler hdl; 166 167 /* pci i/o */ 168 char *name; 169 struct pci_dev *pci; 170 unsigned char pci_rev, pci_lat; 171 u32 __iomem *lmmio; 172 u8 __iomem *bmmio; 173 u32 pci_irqmask; 174 /* The irq mask to be used will depend upon the chip type */ 175 u32 board_virqmask; 176 177 /* video capture */ 178 const struct tw68_format *fmt; 179 unsigned width, height; 180 unsigned seqnr; 181 unsigned field; 182 struct vb2_queue vidq; 183 struct list_head active; 184 185 /* various v4l controls */ 186 const struct tw68_tvnorm *tvnorm; /* video */ 187 188 int input; 189}; 190 191/* ----------------------------------------------------------- */ 192 193#define tw_readl(reg) readl(dev->lmmio + ((reg) >> 2)) 194#define tw_readb(reg) readb(dev->bmmio + (reg)) 195#define tw_writel(reg, value) writel((value), dev->lmmio + ((reg) >> 2)) 196#define tw_writeb(reg, value) writeb((value), dev->bmmio + (reg)) 197 198#define tw_andorl(reg, mask, value) \ 199 writel((readl(dev->lmmio+((reg)>>2)) & ~(mask)) |\ 200 ((value) & (mask)), dev->lmmio+((reg)>>2)) 201#define tw_andorb(reg, mask, value) \ 202 writeb((readb(dev->bmmio + (reg)) & ~(mask)) |\ 203 ((value) & (mask)), dev->bmmio+(reg)) 204#define tw_setl(reg, bit) tw_andorl((reg), (bit), (bit)) 205#define tw_setb(reg, bit) tw_andorb((reg), (bit), (bit)) 206#define tw_clearl(reg, bit) \ 207 writel((readl(dev->lmmio + ((reg) >> 2)) & ~(bit)), \ 208 dev->lmmio + ((reg) >> 2)) 209#define tw_clearb(reg, bit) \ 210 writeb((readb(dev->bmmio+(reg)) & ~(bit)), \ 211 dev->bmmio + (reg)) 212 213#define tw_wait(us) { udelay(us); } 214 215/* ----------------------------------------------------------- */ 216/* tw68-video.c */ 217 218void tw68_set_tvnorm_hw(struct tw68_dev *dev); 219 220int tw68_video_init1(struct tw68_dev *dev); 221int tw68_video_init2(struct tw68_dev *dev, int video_nr); 222void tw68_irq_video_done(struct tw68_dev *dev, unsigned long status); 223int tw68_video_start_dma(struct tw68_dev *dev, struct tw68_buf *buf); 224 225/* ----------------------------------------------------------- */ 226/* tw68-risc.c */ 227 228int tw68_risc_buffer(struct pci_dev *pci, struct tw68_buf *buf, 229 struct scatterlist *sglist, unsigned int top_offset, 230 unsigned int bottom_offset, unsigned int bpl, 231 unsigned int padding, unsigned int lines); 232