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1/* SPDX-License-Identifier: GPL-2.0-or-later */2/*3 * tw68 driver common header file4 *5 * Much of this code is derived from the cx88 and sa7134 drivers, which6 * were in turn derived from the bt87x driver. The original work was by7 * Gerd Knorr; more recently the code was enhanced by Mauro Carvalho Chehab,8 * Hans Verkuil, Andy Walls and many others. Their work is gratefully9 * acknowledged. Full credit goes to them - any problems within this code10 * are mine.11 *12 * Copyright (C) 2009 William M. Brack13 *14 * Refactored and updated to the latest v4l core frameworks:15 *16 * Copyright (C) 2014 Hans Verkuil <hverkuil@xs4all.nl>17 */18 19#include <linux/pci.h>20#include <linux/videodev2.h>21#include <linux/notifier.h>22#include <linux/delay.h>23#include <linux/mutex.h>24#include <linux/io.h>25 26#include <media/v4l2-common.h>27#include <media/v4l2-ioctl.h>28#include <media/v4l2-ctrls.h>29#include <media/v4l2-device.h>30#include <media/videobuf2-v4l2.h>31#include <media/videobuf2-dma-sg.h>32 33#include "tw68-reg.h"34 35#define UNSET (-1U)36 37#define TW68_NORMS ( \38 V4L2_STD_NTSC | V4L2_STD_PAL | V4L2_STD_SECAM | \39 V4L2_STD_PAL_M | V4L2_STD_PAL_Nc | V4L2_STD_PAL_60)40 41#define TW68_VID_INTS (TW68_FFERR | TW68_PABORT | TW68_DMAPERR | \42 TW68_FFOF | TW68_DMAPI)43/* TW6800 chips have trouble with these, so we don't set them for that chip */44#define TW68_VID_INTSX (TW68_FDMIS | TW68_HLOCK | TW68_VLOCK)45 46#define TW68_I2C_INTS (TW68_SBERR | TW68_SBDONE | TW68_SBERR2 | \47 TW68_SBDONE2)48 49enum tw68_decoder_type {50 TW6800,51 TW6801,52 TW6804,53 TWXXXX,54};55 56/* ----------------------------------------------------------- */57/* static data */58 59struct tw68_tvnorm {60 char *name;61 v4l2_std_id id;62 63 /* video decoder */64 u32 sync_control;65 u32 luma_control;66 u32 chroma_ctrl1;67 u32 chroma_gain;68 u32 chroma_ctrl2;69 u32 vgate_misc;70 71 /* video scaler */72 u32 h_delay;73 u32 h_delay0; /* for TW6800 */74 u32 h_start;75 u32 h_stop;76 u32 v_delay;77 u32 video_v_start;78 u32 video_v_stop;79 u32 vbi_v_start_0;80 u32 vbi_v_stop_0;81 u32 vbi_v_start_1;82 83 /* Techwell specific */84 u32 format;85};86 87struct tw68_format {88 u32 fourcc;89 u32 depth;90 u32 twformat;91};92 93/* ----------------------------------------------------------- */94/* card configuration */95 96#define TW68_BOARD_NOAUTO UNSET97#define TW68_BOARD_UNKNOWN 098#define TW68_BOARD_GENERIC_6802 199 100#define TW68_MAXBOARDS 16101#define TW68_INPUT_MAX 4102 103/* ----------------------------------------------------------- */104/* device / file handle status */105 106#define BUFFER_TIMEOUT msecs_to_jiffies(500) /* 0.5 seconds */107 108struct tw68_dev; /* forward delclaration */109 110/* buffer for one video/vbi/ts frame */111struct tw68_buf {112 struct vb2_v4l2_buffer vb;113 struct list_head list;114 115 unsigned int size;116 __le32 *cpu;117 __le32 *jmp;118 dma_addr_t dma;119};120 121struct tw68_fmt {122 char *name;123 u32 fourcc; /* v4l2 format id */124 int depth;125 int flags;126 u32 twformat;127};128 129/* global device status */130struct tw68_dev {131 struct mutex lock;132 spinlock_t slock;133 u16 instance;134 struct v4l2_device v4l2_dev;135 136 /* various device info */137 enum tw68_decoder_type vdecoder;138 struct video_device vdev;139 struct v4l2_ctrl_handler hdl;140 141 /* pci i/o */142 char *name;143 struct pci_dev *pci;144 unsigned char pci_rev, pci_lat;145 u32 __iomem *lmmio;146 u8 __iomem *bmmio;147 u32 pci_irqmask;148 /* The irq mask to be used will depend upon the chip type */149 u32 board_virqmask;150 151 /* video capture */152 const struct tw68_format *fmt;153 unsigned width, height;154 unsigned seqnr;155 unsigned field;156 struct vb2_queue vidq;157 struct list_head active;158 159 /* various v4l controls */160 const struct tw68_tvnorm *tvnorm; /* video */161 162 int input;163};164 165/* ----------------------------------------------------------- */166 167#define tw_readl(reg) readl(dev->lmmio + ((reg) >> 2))168#define tw_readb(reg) readb(dev->bmmio + (reg))169#define tw_writel(reg, value) writel((value), dev->lmmio + ((reg) >> 2))170#define tw_writeb(reg, value) writeb((value), dev->bmmio + (reg))171 172#define tw_andorl(reg, mask, value) \173 writel((readl(dev->lmmio+((reg)>>2)) & ~(mask)) |\174 ((value) & (mask)), dev->lmmio+((reg)>>2))175#define tw_andorb(reg, mask, value) \176 writeb((readb(dev->bmmio + (reg)) & ~(mask)) |\177 ((value) & (mask)), dev->bmmio+(reg))178#define tw_setl(reg, bit) tw_andorl((reg), (bit), (bit))179#define tw_setb(reg, bit) tw_andorb((reg), (bit), (bit))180#define tw_clearl(reg, bit) \181 writel((readl(dev->lmmio + ((reg) >> 2)) & ~(bit)), \182 dev->lmmio + ((reg) >> 2))183#define tw_clearb(reg, bit) \184 writeb((readb(dev->bmmio+(reg)) & ~(bit)), \185 dev->bmmio + (reg))186 187#define tw_wait(us) { udelay(us); }188 189/* ----------------------------------------------------------- */190/* tw68-video.c */191 192void tw68_set_tvnorm_hw(struct tw68_dev *dev);193 194int tw68_video_init1(struct tw68_dev *dev);195int tw68_video_init2(struct tw68_dev *dev, int video_nr);196void tw68_irq_video_done(struct tw68_dev *dev, unsigned long status);197int tw68_video_start_dma(struct tw68_dev *dev, struct tw68_buf *buf);198 199/* ----------------------------------------------------------- */200/* tw68-risc.c */201 202int tw68_risc_buffer(struct pci_dev *pci, struct tw68_buf *buf,203 struct scatterlist *sglist, unsigned int top_offset,204 unsigned int bottom_offset, unsigned int bpl,205 unsigned int padding, unsigned int lines);206