drivers/media/i2c/tvp514x.c

/* [<][>][^][v][top][bottom][index][help] */
This source file includes following definitions.
to_decoder
to_sd
tvp514x_read_reg
dump_reg
tvp514x_write_reg
tvp514x_write_regs
tvp514x_query_current_std
tvp514x_reg_dump
tvp514x_configure
tvp514x_detect
tvp514x_querystd
tvp514x_s_std
tvp514x_s_routing
tvp514x_s_ctrl
tvp514x_g_frame_interval
tvp514x_s_frame_interval
tvp514x_s_stream
tvp514x_enum_mbus_code
tvp514x_get_pad_format
tvp514x_set_pad_format
tvp514x_get_pdata
tvp514x_probe
tvp514x_remove
   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * drivers/media/i2c/tvp514x.c
   4  *
   5  * TI TVP5146/47 decoder driver
   6  *
   7  * Copyright (C) 2008 Texas Instruments Inc
   8  * Author: Vaibhav Hiremath <hvaibhav@ti.com>
   9  *
  10  * Contributors:
  11  *     Sivaraj R <sivaraj@ti.com>
  12  *     Brijesh R Jadav <brijesh.j@ti.com>
  13  *     Hardik Shah <hardik.shah@ti.com>
  14  *     Manjunath Hadli <mrh@ti.com>
  15  *     Karicheri Muralidharan <m-karicheri2@ti.com>
  16  *     Prabhakar Lad <prabhakar.lad@ti.com>
  17  */
  18 
  19 #include <linux/i2c.h>
  20 #include <linux/slab.h>
  21 #include <linux/delay.h>
  22 #include <linux/videodev2.h>
  23 #include <linux/module.h>
  24 #include <linux/v4l2-mediabus.h>
  25 #include <linux/of.h>
  26 #include <linux/of_graph.h>
  27 
  28 #include <media/v4l2-async.h>
  29 #include <media/v4l2-device.h>
  30 #include <media/v4l2-common.h>
  31 #include <media/v4l2-mediabus.h>
  32 #include <media/v4l2-fwnode.h>
  33 #include <media/v4l2-ctrls.h>
  34 #include <media/i2c/tvp514x.h>
  35 #include <media/media-entity.h>
  36 
  37 #include "tvp514x_regs.h"
  38 
  39 /* Private macros for TVP */
  40 #define I2C_RETRY_COUNT                 (5)
  41 #define LOCK_RETRY_COUNT                (5)
  42 #define LOCK_RETRY_DELAY                (200)
  43 
  44 /* Debug functions */
  45 static bool debug;
  46 module_param(debug, bool, 0644);
  47 MODULE_PARM_DESC(debug, "Debug level (0-1)");
  48 
  49 MODULE_AUTHOR("Texas Instruments");
  50 MODULE_DESCRIPTION("TVP514X linux decoder driver");
  51 MODULE_LICENSE("GPL");
  52 
  53 /* enum tvp514x_std - enum for supported standards */
  54 enum tvp514x_std {
  55         STD_NTSC_MJ = 0,
  56         STD_PAL_BDGHIN,
  57         STD_INVALID
  58 };
  59 
  60 /**
  61  * struct tvp514x_std_info - Structure to store standard information
  62  * @width: Line width in pixels
  63  * @height:Number of active lines
  64  * @video_std: Value to write in REG_VIDEO_STD register
  65  * @standard: v4l2 standard structure information
  66  */
  67 struct tvp514x_std_info {
  68         unsigned long width;
  69         unsigned long height;
  70         u8 video_std;
  71         struct v4l2_standard standard;
  72 };
  73 
  74 static struct tvp514x_reg tvp514x_reg_list_default[0x40];
  75 
  76 static int tvp514x_s_stream(struct v4l2_subdev *sd, int enable);
  77 /**
  78  * struct tvp514x_decoder - TVP5146/47 decoder object
  79  * @sd: Subdevice Slave handle
  80  * @hdl: embedded &struct v4l2_ctrl_handler
  81  * @tvp514x_regs: copy of hw's regs with preset values.
  82  * @pdata: Board specific
  83  * @ver: Chip version
  84  * @streaming: TVP5146/47 decoder streaming - enabled or disabled.
  85  * @pix: Current pixel format
  86  * @num_fmts: Number of formats
  87  * @fmt_list: Format list
  88  * @current_std: Current standard
  89  * @num_stds: Number of standards
  90  * @std_list: Standards list
  91  * @input: Input routing at chip level
  92  * @output: Output routing at chip level
  93  * @pad: subdev media pad associated with the decoder
  94  * @format: media bus frame format
  95  * @int_seq: driver's register init sequence
  96  */
  97 struct tvp514x_decoder {
  98         struct v4l2_subdev sd;
  99         struct v4l2_ctrl_handler hdl;
 100         struct tvp514x_reg tvp514x_regs[ARRAY_SIZE(tvp514x_reg_list_default)];
 101         const struct tvp514x_platform_data *pdata;
 102 
 103         int ver;
 104         int streaming;
 105 
 106         struct v4l2_pix_format pix;
 107         int num_fmts;
 108         const struct v4l2_fmtdesc *fmt_list;
 109 
 110         enum tvp514x_std current_std;
 111         int num_stds;
 112         const struct tvp514x_std_info *std_list;
 113         /* Input and Output Routing parameters */
 114         u32 input;
 115         u32 output;
 116 
 117         /* mc related members */
 118         struct media_pad pad;
 119         struct v4l2_mbus_framefmt format;
 120 
 121         struct tvp514x_reg *int_seq;
 122 };
 123 
 124 /* TVP514x default register values */
 125 static struct tvp514x_reg tvp514x_reg_list_default[] = {
 126         /* Composite selected */
 127         {TOK_WRITE, REG_INPUT_SEL, 0x05},
 128         {TOK_WRITE, REG_AFE_GAIN_CTRL, 0x0F},
 129         /* Auto mode */
 130         {TOK_WRITE, REG_VIDEO_STD, 0x00},
 131         {TOK_WRITE, REG_OPERATION_MODE, 0x00},
 132         {TOK_SKIP, REG_AUTOSWITCH_MASK, 0x3F},
 133         {TOK_WRITE, REG_COLOR_KILLER, 0x10},
 134         {TOK_WRITE, REG_LUMA_CONTROL1, 0x00},
 135         {TOK_WRITE, REG_LUMA_CONTROL2, 0x00},
 136         {TOK_WRITE, REG_LUMA_CONTROL3, 0x02},
 137         {TOK_WRITE, REG_BRIGHTNESS, 0x80},
 138         {TOK_WRITE, REG_CONTRAST, 0x80},
 139         {TOK_WRITE, REG_SATURATION, 0x80},
 140         {TOK_WRITE, REG_HUE, 0x00},
 141         {TOK_WRITE, REG_CHROMA_CONTROL1, 0x00},
 142         {TOK_WRITE, REG_CHROMA_CONTROL2, 0x0E},
 143         /* Reserved */
 144         {TOK_SKIP, 0x0F, 0x00},
 145         {TOK_WRITE, REG_COMP_PR_SATURATION, 0x80},
 146         {TOK_WRITE, REG_COMP_Y_CONTRAST, 0x80},
 147         {TOK_WRITE, REG_COMP_PB_SATURATION, 0x80},
 148         /* Reserved */
 149         {TOK_SKIP, 0x13, 0x00},
 150         {TOK_WRITE, REG_COMP_Y_BRIGHTNESS, 0x80},
 151         /* Reserved */
 152         {TOK_SKIP, 0x15, 0x00},
 153         /* NTSC timing */
 154         {TOK_SKIP, REG_AVID_START_PIXEL_LSB, 0x55},
 155         {TOK_SKIP, REG_AVID_START_PIXEL_MSB, 0x00},
 156         {TOK_SKIP, REG_AVID_STOP_PIXEL_LSB, 0x25},
 157         {TOK_SKIP, REG_AVID_STOP_PIXEL_MSB, 0x03},
 158         /* NTSC timing */
 159         {TOK_SKIP, REG_HSYNC_START_PIXEL_LSB, 0x00},
 160         {TOK_SKIP, REG_HSYNC_START_PIXEL_MSB, 0x00},
 161         {TOK_SKIP, REG_HSYNC_STOP_PIXEL_LSB, 0x40},
 162         {TOK_SKIP, REG_HSYNC_STOP_PIXEL_MSB, 0x00},
 163         /* NTSC timing */
 164         {TOK_SKIP, REG_VSYNC_START_LINE_LSB, 0x04},
 165         {TOK_SKIP, REG_VSYNC_START_LINE_MSB, 0x00},
 166         {TOK_SKIP, REG_VSYNC_STOP_LINE_LSB, 0x07},
 167         {TOK_SKIP, REG_VSYNC_STOP_LINE_MSB, 0x00},
 168         /* NTSC timing */
 169         {TOK_SKIP, REG_VBLK_START_LINE_LSB, 0x01},
 170         {TOK_SKIP, REG_VBLK_START_LINE_MSB, 0x00},
 171         {TOK_SKIP, REG_VBLK_STOP_LINE_LSB, 0x15},
 172         {TOK_SKIP, REG_VBLK_STOP_LINE_MSB, 0x00},
 173         /* Reserved */
 174         {TOK_SKIP, 0x26, 0x00},
 175         /* Reserved */
 176         {TOK_SKIP, 0x27, 0x00},
 177         {TOK_SKIP, REG_FAST_SWTICH_CONTROL, 0xCC},
 178         /* Reserved */
 179         {TOK_SKIP, 0x29, 0x00},
 180         {TOK_SKIP, REG_FAST_SWTICH_SCART_DELAY, 0x00},
 181         /* Reserved */
 182         {TOK_SKIP, 0x2B, 0x00},
 183         {TOK_SKIP, REG_SCART_DELAY, 0x00},
 184         {TOK_SKIP, REG_CTI_DELAY, 0x00},
 185         {TOK_SKIP, REG_CTI_CONTROL, 0x00},
 186         /* Reserved */
 187         {TOK_SKIP, 0x2F, 0x00},
 188         /* Reserved */
 189         {TOK_SKIP, 0x30, 0x00},
 190         /* Reserved */
 191         {TOK_SKIP, 0x31, 0x00},
 192         /* HS, VS active high */
 193         {TOK_WRITE, REG_SYNC_CONTROL, 0x00},
 194         /* 10-bit BT.656 */
 195         {TOK_WRITE, REG_OUTPUT_FORMATTER1, 0x00},
 196         /* Enable clk & data */
 197         {TOK_WRITE, REG_OUTPUT_FORMATTER2, 0x11},
 198         /* Enable AVID & FLD */
 199         {TOK_WRITE, REG_OUTPUT_FORMATTER3, 0xEE},
 200         /* Enable VS & HS */
 201         {TOK_WRITE, REG_OUTPUT_FORMATTER4, 0xAF},
 202         {TOK_WRITE, REG_OUTPUT_FORMATTER5, 0xFF},
 203         {TOK_WRITE, REG_OUTPUT_FORMATTER6, 0xFF},
 204         /* Clear status */
 205         {TOK_WRITE, REG_CLEAR_LOST_LOCK, 0x01},
 206         {TOK_TERM, 0, 0},
 207 };
 208 
 209 /*
 210  * List of image formats supported by TVP5146/47 decoder
 211  * Currently we are using 8 bit mode only, but can be
 212  * extended to 10/20 bit mode.
 213  */
 214 static const struct v4l2_fmtdesc tvp514x_fmt_list[] = {
 215         {
 216          .index         = 0,
 217          .type          = V4L2_BUF_TYPE_VIDEO_CAPTURE,
 218          .flags         = 0,
 219          .description   = "8-bit UYVY 4:2:2 Format",
 220          .pixelformat   = V4L2_PIX_FMT_UYVY,
 221         },
 222 };
 223 
 224 /*
 225  * Supported standards -
 226  *
 227  * Currently supports two standards only, need to add support for rest of the
 228  * modes, like SECAM, etc...
 229  */
 230 static const struct tvp514x_std_info tvp514x_std_list[] = {
 231         /* Standard: STD_NTSC_MJ */
 232         [STD_NTSC_MJ] = {
 233          .width = NTSC_NUM_ACTIVE_PIXELS,
 234          .height = NTSC_NUM_ACTIVE_LINES,
 235          .video_std = VIDEO_STD_NTSC_MJ_BIT,
 236          .standard = {
 237                       .index = 0,
 238                       .id = V4L2_STD_NTSC,
 239                       .name = "NTSC",
 240                       .frameperiod = {1001, 30000},
 241                       .framelines = 525
 242                      },
 243         /* Standard: STD_PAL_BDGHIN */
 244         },
 245         [STD_PAL_BDGHIN] = {
 246          .width = PAL_NUM_ACTIVE_PIXELS,
 247          .height = PAL_NUM_ACTIVE_LINES,
 248          .video_std = VIDEO_STD_PAL_BDGHIN_BIT,
 249          .standard = {
 250                       .index = 1,
 251                       .id = V4L2_STD_PAL,
 252                       .name = "PAL",
 253                       .frameperiod = {1, 25},
 254                       .framelines = 625
 255                      },
 256         },
 257         /* Standard: need to add for additional standard */
 258 };
 259 
 260 
 261 static inline struct tvp514x_decoder *to_decoder(struct v4l2_subdev *sd)
 262 {
 263         return container_of(sd, struct tvp514x_decoder, sd);
 264 }
 265 
 266 static inline struct v4l2_subdev *to_sd(struct v4l2_ctrl *ctrl)
 267 {
 268         return &container_of(ctrl->handler, struct tvp514x_decoder, hdl)->sd;
 269 }
 270 
 271 
 272 /**
 273  * tvp514x_read_reg() - Read a value from a register in an TVP5146/47.
 274  * @sd: ptr to v4l2_subdev struct
 275  * @reg: TVP5146/47 register address
 276  *
 277  * Returns value read if successful, or non-zero (-1) otherwise.
 278  */
 279 static int tvp514x_read_reg(struct v4l2_subdev *sd, u8 reg)
 280 {
 281         int err, retry = 0;
 282         struct i2c_client *client = v4l2_get_subdevdata(sd);
 283 
 284 read_again:
 285 
 286         err = i2c_smbus_read_byte_data(client, reg);
 287         if (err < 0) {
 288                 if (retry <= I2C_RETRY_COUNT) {
 289                         v4l2_warn(sd, "Read: retry ... %d\n", retry);
 290                         retry++;
 291                         msleep_interruptible(10);
 292                         goto read_again;
 293                 }
 294         }
 295 
 296         return err;
 297 }
 298 
 299 /**
 300  * dump_reg() - dump the register content of TVP5146/47.
 301  * @sd: ptr to v4l2_subdev struct
 302  * @reg: TVP5146/47 register address
 303  */
 304 static void dump_reg(struct v4l2_subdev *sd, u8 reg)
 305 {
 306         u32 val;
 307 
 308         val = tvp514x_read_reg(sd, reg);
 309         v4l2_info(sd, "Reg(0x%.2X): 0x%.2X\n", reg, val);
 310 }
 311 
 312 /**
 313  * tvp514x_write_reg() - Write a value to a register in TVP5146/47
 314  * @sd: ptr to v4l2_subdev struct
 315  * @reg: TVP5146/47 register address
 316  * @val: value to be written to the register
 317  *
 318  * Write a value to a register in an TVP5146/47 decoder device.
 319  * Returns zero if successful, or non-zero otherwise.
 320  */
 321 static int tvp514x_write_reg(struct v4l2_subdev *sd, u8 reg, u8 val)
 322 {
 323         int err, retry = 0;
 324         struct i2c_client *client = v4l2_get_subdevdata(sd);
 325 
 326 write_again:
 327 
 328         err = i2c_smbus_write_byte_data(client, reg, val);
 329         if (err) {
 330                 if (retry <= I2C_RETRY_COUNT) {
 331                         v4l2_warn(sd, "Write: retry ... %d\n", retry);
 332                         retry++;
 333                         msleep_interruptible(10);
 334                         goto write_again;
 335                 }
 336         }
 337 
 338         return err;
 339 }
 340 
 341 /**
 342  * tvp514x_write_regs() : Initializes a list of TVP5146/47 registers
 343  * @sd: ptr to v4l2_subdev struct
 344  * @reglist: list of TVP5146/47 registers and values
 345  *
 346  * Initializes a list of TVP5146/47 registers:-
 347  *              if token is TOK_TERM, then entire write operation terminates
 348  *              if token is TOK_DELAY, then a delay of 'val' msec is introduced
 349  *              if token is TOK_SKIP, then the register write is skipped
 350  *              if token is TOK_WRITE, then the register write is performed
 351  * Returns zero if successful, or non-zero otherwise.
 352  */
 353 static int tvp514x_write_regs(struct v4l2_subdev *sd,
 354                               const struct tvp514x_reg reglist[])
 355 {
 356         int err;
 357         const struct tvp514x_reg *next = reglist;
 358 
 359         for (; next->token != TOK_TERM; next++) {
 360                 if (next->token == TOK_DELAY) {
 361                         msleep(next->val);
 362                         continue;
 363                 }
 364 
 365                 if (next->token == TOK_SKIP)
 366                         continue;
 367 
 368                 err = tvp514x_write_reg(sd, next->reg, (u8) next->val);
 369                 if (err) {
 370                         v4l2_err(sd, "Write failed. Err[%d]\n", err);
 371                         return err;
 372                 }
 373         }
 374         return 0;
 375 }
 376 
 377 /**
 378  * tvp514x_query_current_std() : Query the current standard detected by TVP5146/47
 379  * @sd: ptr to v4l2_subdev struct
 380  *
 381  * Returns the current standard detected by TVP5146/47, STD_INVALID if there is no
 382  * standard detected.
 383  */
 384 static enum tvp514x_std tvp514x_query_current_std(struct v4l2_subdev *sd)
 385 {
 386         u8 std, std_status;
 387 
 388         std = tvp514x_read_reg(sd, REG_VIDEO_STD);
 389         if ((std & VIDEO_STD_MASK) == VIDEO_STD_AUTO_SWITCH_BIT)
 390                 /* use the standard status register */
 391                 std_status = tvp514x_read_reg(sd, REG_VIDEO_STD_STATUS);
 392         else
 393                 /* use the standard register itself */
 394                 std_status = std;
 395 
 396         switch (std_status & VIDEO_STD_MASK) {
 397         case VIDEO_STD_NTSC_MJ_BIT:
 398                 return STD_NTSC_MJ;
 399 
 400         case VIDEO_STD_PAL_BDGHIN_BIT:
 401                 return STD_PAL_BDGHIN;
 402 
 403         default:
 404                 return STD_INVALID;
 405         }
 406 
 407         return STD_INVALID;
 408 }
 409 
 410 /* TVP5146/47 register dump function */
 411 static void tvp514x_reg_dump(struct v4l2_subdev *sd)
 412 {
 413         dump_reg(sd, REG_INPUT_SEL);
 414         dump_reg(sd, REG_AFE_GAIN_CTRL);
 415         dump_reg(sd, REG_VIDEO_STD);
 416         dump_reg(sd, REG_OPERATION_MODE);
 417         dump_reg(sd, REG_COLOR_KILLER);
 418         dump_reg(sd, REG_LUMA_CONTROL1);
 419         dump_reg(sd, REG_LUMA_CONTROL2);
 420         dump_reg(sd, REG_LUMA_CONTROL3);
 421         dump_reg(sd, REG_BRIGHTNESS);
 422         dump_reg(sd, REG_CONTRAST);
 423         dump_reg(sd, REG_SATURATION);
 424         dump_reg(sd, REG_HUE);
 425         dump_reg(sd, REG_CHROMA_CONTROL1);
 426         dump_reg(sd, REG_CHROMA_CONTROL2);
 427         dump_reg(sd, REG_COMP_PR_SATURATION);
 428         dump_reg(sd, REG_COMP_Y_CONTRAST);
 429         dump_reg(sd, REG_COMP_PB_SATURATION);
 430         dump_reg(sd, REG_COMP_Y_BRIGHTNESS);
 431         dump_reg(sd, REG_AVID_START_PIXEL_LSB);
 432         dump_reg(sd, REG_AVID_START_PIXEL_MSB);
 433         dump_reg(sd, REG_AVID_STOP_PIXEL_LSB);
 434         dump_reg(sd, REG_AVID_STOP_PIXEL_MSB);
 435         dump_reg(sd, REG_HSYNC_START_PIXEL_LSB);
 436         dump_reg(sd, REG_HSYNC_START_PIXEL_MSB);
 437         dump_reg(sd, REG_HSYNC_STOP_PIXEL_LSB);
 438         dump_reg(sd, REG_HSYNC_STOP_PIXEL_MSB);
 439         dump_reg(sd, REG_VSYNC_START_LINE_LSB);
 440         dump_reg(sd, REG_VSYNC_START_LINE_MSB);
 441         dump_reg(sd, REG_VSYNC_STOP_LINE_LSB);
 442         dump_reg(sd, REG_VSYNC_STOP_LINE_MSB);
 443         dump_reg(sd, REG_VBLK_START_LINE_LSB);
 444         dump_reg(sd, REG_VBLK_START_LINE_MSB);
 445         dump_reg(sd, REG_VBLK_STOP_LINE_LSB);
 446         dump_reg(sd, REG_VBLK_STOP_LINE_MSB);
 447         dump_reg(sd, REG_SYNC_CONTROL);
 448         dump_reg(sd, REG_OUTPUT_FORMATTER1);
 449         dump_reg(sd, REG_OUTPUT_FORMATTER2);
 450         dump_reg(sd, REG_OUTPUT_FORMATTER3);
 451         dump_reg(sd, REG_OUTPUT_FORMATTER4);
 452         dump_reg(sd, REG_OUTPUT_FORMATTER5);
 453         dump_reg(sd, REG_OUTPUT_FORMATTER6);
 454         dump_reg(sd, REG_CLEAR_LOST_LOCK);
 455 }
 456 
 457 /**
 458  * tvp514x_configure() - Configure the TVP5146/47 registers
 459  * @sd: ptr to v4l2_subdev struct
 460  * @decoder: ptr to tvp514x_decoder structure
 461  *
 462  * Returns zero if successful, or non-zero otherwise.
 463  */
 464 static int tvp514x_configure(struct v4l2_subdev *sd,
 465                 struct tvp514x_decoder *decoder)
 466 {
 467         int err;
 468 
 469         /* common register initialization */
 470         err =
 471             tvp514x_write_regs(sd, decoder->tvp514x_regs);
 472         if (err)
 473                 return err;
 474 
 475         if (debug)
 476                 tvp514x_reg_dump(sd);
 477 
 478         return 0;
 479 }
 480 
 481 /**
 482  * tvp514x_detect() - Detect if an tvp514x is present, and if so which revision.
 483  * @sd: pointer to standard V4L2 sub-device structure
 484  * @decoder: pointer to tvp514x_decoder structure
 485  *
 486  * A device is considered to be detected if the chip ID (LSB and MSB)
 487  * registers match the expected values.
 488  * Any value of the rom version register is accepted.
 489  * Returns ENODEV error number if no device is detected, or zero
 490  * if a device is detected.
 491  */
 492 static int tvp514x_detect(struct v4l2_subdev *sd,
 493                 struct tvp514x_decoder *decoder)
 494 {
 495         u8 chip_id_msb, chip_id_lsb, rom_ver;
 496         struct i2c_client *client = v4l2_get_subdevdata(sd);
 497 
 498         chip_id_msb = tvp514x_read_reg(sd, REG_CHIP_ID_MSB);
 499         chip_id_lsb = tvp514x_read_reg(sd, REG_CHIP_ID_LSB);
 500         rom_ver = tvp514x_read_reg(sd, REG_ROM_VERSION);
 501 
 502         v4l2_dbg(1, debug, sd,
 503                  "chip id detected msb:0x%x lsb:0x%x rom version:0x%x\n",
 504                  chip_id_msb, chip_id_lsb, rom_ver);
 505         if ((chip_id_msb != TVP514X_CHIP_ID_MSB)
 506                 || ((chip_id_lsb != TVP5146_CHIP_ID_LSB)
 507                 && (chip_id_lsb != TVP5147_CHIP_ID_LSB))) {
 508                 /* We didn't read the values we expected, so this must not be
 509                  * an TVP5146/47.
 510                  */
 511                 v4l2_err(sd, "chip id mismatch msb:0x%x lsb:0x%x\n",
 512                                 chip_id_msb, chip_id_lsb);
 513                 return -ENODEV;
 514         }
 515 
 516         decoder->ver = rom_ver;
 517 
 518         v4l2_info(sd, "%s (Version - 0x%.2x) found at 0x%x (%s)\n",
 519                         client->name, decoder->ver,
 520                         client->addr << 1, client->adapter->name);
 521         return 0;
 522 }
 523 
 524 /**
 525  * tvp514x_querystd() - V4L2 decoder interface handler for querystd
 526  * @sd: pointer to standard V4L2 sub-device structure
 527  * @std_id: standard V4L2 std_id ioctl enum
 528  *
 529  * Returns the current standard detected by TVP5146/47. If no active input is
 530  * detected then *std_id is set to 0 and the function returns 0.
 531  */
 532 static int tvp514x_querystd(struct v4l2_subdev *sd, v4l2_std_id *std_id)
 533 {
 534         struct tvp514x_decoder *decoder = to_decoder(sd);
 535         enum tvp514x_std current_std;
 536         enum tvp514x_input input_sel;
 537         u8 sync_lock_status, lock_mask;
 538 
 539         if (std_id == NULL)
 540                 return -EINVAL;
 541 
 542         /* To query the standard the TVP514x must power on the ADCs. */
 543         if (!decoder->streaming) {
 544                 tvp514x_s_stream(sd, 1);
 545                 msleep(LOCK_RETRY_DELAY);
 546         }
 547 
 548         /* query the current standard */
 549         current_std = tvp514x_query_current_std(sd);
 550         if (current_std == STD_INVALID) {
 551                 *std_id = V4L2_STD_UNKNOWN;
 552                 return 0;
 553         }
 554 
 555         input_sel = decoder->input;
 556 
 557         switch (input_sel) {
 558         case INPUT_CVBS_VI1A:
 559         case INPUT_CVBS_VI1B:
 560         case INPUT_CVBS_VI1C:
 561         case INPUT_CVBS_VI2A:
 562         case INPUT_CVBS_VI2B:
 563         case INPUT_CVBS_VI2C:
 564         case INPUT_CVBS_VI3A:
 565         case INPUT_CVBS_VI3B:
 566         case INPUT_CVBS_VI3C:
 567         case INPUT_CVBS_VI4A:
 568                 lock_mask = STATUS_CLR_SUBCAR_LOCK_BIT |
 569                         STATUS_HORZ_SYNC_LOCK_BIT |
 570                         STATUS_VIRT_SYNC_LOCK_BIT;
 571                 break;
 572 
 573         case INPUT_SVIDEO_VI2A_VI1A:
 574         case INPUT_SVIDEO_VI2B_VI1B:
 575         case INPUT_SVIDEO_VI2C_VI1C:
 576         case INPUT_SVIDEO_VI2A_VI3A:
 577         case INPUT_SVIDEO_VI2B_VI3B:
 578         case INPUT_SVIDEO_VI2C_VI3C:
 579         case INPUT_SVIDEO_VI4A_VI1A:
 580         case INPUT_SVIDEO_VI4A_VI1B:
 581         case INPUT_SVIDEO_VI4A_VI1C:
 582         case INPUT_SVIDEO_VI4A_VI3A:
 583         case INPUT_SVIDEO_VI4A_VI3B:
 584         case INPUT_SVIDEO_VI4A_VI3C:
 585                 lock_mask = STATUS_HORZ_SYNC_LOCK_BIT |
 586                         STATUS_VIRT_SYNC_LOCK_BIT;
 587                 break;
 588                 /*Need to add other interfaces*/
 589         default:
 590                 return -EINVAL;
 591         }
 592         /* check whether signal is locked */
 593         sync_lock_status = tvp514x_read_reg(sd, REG_STATUS1);
 594         if (lock_mask != (sync_lock_status & lock_mask)) {
 595                 *std_id = V4L2_STD_UNKNOWN;
 596                 return 0;       /* No input detected */
 597         }
 598 
 599         *std_id &= decoder->std_list[current_std].standard.id;
 600 
 601         v4l2_dbg(1, debug, sd, "Current STD: %s\n",
 602                         decoder->std_list[current_std].standard.name);
 603         return 0;
 604 }
 605 
 606 /**
 607  * tvp514x_s_std() - V4L2 decoder interface handler for s_std
 608  * @sd: pointer to standard V4L2 sub-device structure
 609  * @std_id: standard V4L2 v4l2_std_id ioctl enum
 610  *
 611  * If std_id is supported, sets the requested standard. Otherwise, returns
 612  * -EINVAL
 613  */
 614 static int tvp514x_s_std(struct v4l2_subdev *sd, v4l2_std_id std_id)
 615 {
 616         struct tvp514x_decoder *decoder = to_decoder(sd);
 617         int err, i;
 618 
 619         for (i = 0; i < decoder->num_stds; i++)
 620                 if (std_id & decoder->std_list[i].standard.id)
 621                         break;
 622 
 623         if ((i == decoder->num_stds) || (i == STD_INVALID))
 624                 return -EINVAL;
 625 
 626         err = tvp514x_write_reg(sd, REG_VIDEO_STD,
 627                                 decoder->std_list[i].video_std);
 628         if (err)
 629                 return err;
 630 
 631         decoder->current_std = i;
 632         decoder->tvp514x_regs[REG_VIDEO_STD].val =
 633                 decoder->std_list[i].video_std;
 634 
 635         v4l2_dbg(1, debug, sd, "Standard set to: %s\n",
 636                         decoder->std_list[i].standard.name);
 637         return 0;
 638 }
 639 
 640 /**
 641  * tvp514x_s_routing() - V4L2 decoder interface handler for s_routing
 642  * @sd: pointer to standard V4L2 sub-device structure
 643  * @input: input selector for routing the signal
 644  * @output: output selector for routing the signal
 645  * @config: config value. Not used
 646  *
 647  * If index is valid, selects the requested input. Otherwise, returns -EINVAL if
 648  * the input is not supported or there is no active signal present in the
 649  * selected input.
 650  */
 651 static int tvp514x_s_routing(struct v4l2_subdev *sd,
 652                                 u32 input, u32 output, u32 config)
 653 {
 654         struct tvp514x_decoder *decoder = to_decoder(sd);
 655         int err;
 656         enum tvp514x_input input_sel;
 657         enum tvp514x_output output_sel;
 658 
 659         if ((input >= INPUT_INVALID) ||
 660                         (output >= OUTPUT_INVALID))
 661                 /* Index out of bound */
 662                 return -EINVAL;
 663 
 664         input_sel = input;
 665         output_sel = output;
 666 
 667         err = tvp514x_write_reg(sd, REG_INPUT_SEL, input_sel);
 668         if (err)
 669                 return err;
 670 
 671         output_sel |= tvp514x_read_reg(sd,
 672                         REG_OUTPUT_FORMATTER1) & 0x7;
 673         err = tvp514x_write_reg(sd, REG_OUTPUT_FORMATTER1,
 674                         output_sel);
 675         if (err)
 676                 return err;
 677 
 678         decoder->tvp514x_regs[REG_INPUT_SEL].val = input_sel;
 679         decoder->tvp514x_regs[REG_OUTPUT_FORMATTER1].val = output_sel;
 680         decoder->input = input;
 681         decoder->output = output;
 682 
 683         v4l2_dbg(1, debug, sd, "Input set to: %d\n", input_sel);
 684 
 685         return 0;
 686 }
 687 
 688 /**
 689  * tvp514x_s_ctrl() - V4L2 decoder interface handler for s_ctrl
 690  * @ctrl: pointer to v4l2_ctrl structure
 691  *
 692  * If the requested control is supported, sets the control's current
 693  * value in HW. Otherwise, returns -EINVAL if the control is not supported.
 694  */
 695 static int tvp514x_s_ctrl(struct v4l2_ctrl *ctrl)
 696 {
 697         struct v4l2_subdev *sd = to_sd(ctrl);
 698         struct tvp514x_decoder *decoder = to_decoder(sd);
 699         int err = -EINVAL, value;
 700 
 701         value = ctrl->val;
 702 
 703         switch (ctrl->id) {
 704         case V4L2_CID_BRIGHTNESS:
 705                 err = tvp514x_write_reg(sd, REG_BRIGHTNESS, value);
 706                 if (!err)
 707                         decoder->tvp514x_regs[REG_BRIGHTNESS].val = value;
 708                 break;
 709         case V4L2_CID_CONTRAST:
 710                 err = tvp514x_write_reg(sd, REG_CONTRAST, value);
 711                 if (!err)
 712                         decoder->tvp514x_regs[REG_CONTRAST].val = value;
 713                 break;
 714         case V4L2_CID_SATURATION:
 715                 err = tvp514x_write_reg(sd, REG_SATURATION, value);
 716                 if (!err)
 717                         decoder->tvp514x_regs[REG_SATURATION].val = value;
 718                 break;
 719         case V4L2_CID_HUE:
 720                 if (value == 180)
 721                         value = 0x7F;
 722                 else if (value == -180)
 723                         value = 0x80;
 724                 err = tvp514x_write_reg(sd, REG_HUE, value);
 725                 if (!err)
 726                         decoder->tvp514x_regs[REG_HUE].val = value;
 727                 break;
 728         case V4L2_CID_AUTOGAIN:
 729                 err = tvp514x_write_reg(sd, REG_AFE_GAIN_CTRL, value ? 0x0f : 0x0c);
 730                 if (!err)
 731                         decoder->tvp514x_regs[REG_AFE_GAIN_CTRL].val = value;
 732                 break;
 733         }
 734 
 735         v4l2_dbg(1, debug, sd, "Set Control: ID - %d - %d\n",
 736                         ctrl->id, ctrl->val);
 737         return err;
 738 }
 739 
 740 /**
 741  * tvp514x_g_frame_interval() - V4L2 decoder interface handler
 742  * @sd: pointer to standard V4L2 sub-device structure
 743  * @ival: pointer to a v4l2_subdev_frame_interval structure
 744  *
 745  * Returns the decoder's video CAPTURE parameters.
 746  */
 747 static int
 748 tvp514x_g_frame_interval(struct v4l2_subdev *sd,
 749                          struct v4l2_subdev_frame_interval *ival)
 750 {
 751         struct tvp514x_decoder *decoder = to_decoder(sd);
 752         enum tvp514x_std current_std;
 753 
 754 
 755         /* get the current standard */
 756         current_std = decoder->current_std;
 757 
 758         ival->interval =
 759                 decoder->std_list[current_std].standard.frameperiod;
 760 
 761         return 0;
 762 }
 763 
 764 /**
 765  * tvp514x_s_frame_interval() - V4L2 decoder interface handler
 766  * @sd: pointer to standard V4L2 sub-device structure
 767  * @ival: pointer to a v4l2_subdev_frame_interval structure
 768  *
 769  * Configures the decoder to use the input parameters, if possible. If
 770  * not possible, returns the appropriate error code.
 771  */
 772 static int
 773 tvp514x_s_frame_interval(struct v4l2_subdev *sd,
 774                          struct v4l2_subdev_frame_interval *ival)
 775 {
 776         struct tvp514x_decoder *decoder = to_decoder(sd);
 777         struct v4l2_fract *timeperframe;
 778         enum tvp514x_std current_std;
 779 
 780 
 781         timeperframe = &ival->interval;
 782 
 783         /* get the current standard */
 784         current_std = decoder->current_std;
 785 
 786         *timeperframe =
 787             decoder->std_list[current_std].standard.frameperiod;
 788 
 789         return 0;
 790 }
 791 
 792 /**
 793  * tvp514x_s_stream() - V4L2 decoder i/f handler for s_stream
 794  * @sd: pointer to standard V4L2 sub-device structure
 795  * @enable: streaming enable or disable
 796  *
 797  * Sets streaming to enable or disable, if possible.
 798  */
 799 static int tvp514x_s_stream(struct v4l2_subdev *sd, int enable)
 800 {
 801         int err = 0;
 802         struct tvp514x_decoder *decoder = to_decoder(sd);
 803 
 804         if (decoder->streaming == enable)
 805                 return 0;
 806 
 807         switch (enable) {
 808         case 0:
 809         {
 810                 /* Power Down Sequence */
 811                 err = tvp514x_write_reg(sd, REG_OPERATION_MODE, 0x01);
 812                 if (err) {
 813                         v4l2_err(sd, "Unable to turn off decoder\n");
 814                         return err;
 815                 }
 816                 decoder->streaming = enable;
 817                 break;
 818         }
 819         case 1:
 820         {
 821                 /* Power Up Sequence */
 822                 err = tvp514x_write_regs(sd, decoder->int_seq);
 823                 if (err) {
 824                         v4l2_err(sd, "Unable to turn on decoder\n");
 825                         return err;
 826                 }
 827                 /* Detect if not already detected */
 828                 err = tvp514x_detect(sd, decoder);
 829                 if (err) {
 830                         v4l2_err(sd, "Unable to detect decoder\n");
 831                         return err;
 832                 }
 833                 err = tvp514x_configure(sd, decoder);
 834                 if (err) {
 835                         v4l2_err(sd, "Unable to configure decoder\n");
 836                         return err;
 837                 }
 838                 decoder->streaming = enable;
 839                 break;
 840         }
 841         default:
 842                 err = -ENODEV;
 843                 break;
 844         }
 845 
 846         return err;
 847 }
 848 
 849 static const struct v4l2_ctrl_ops tvp514x_ctrl_ops = {
 850         .s_ctrl = tvp514x_s_ctrl,
 851 };
 852 
 853 /**
 854  * tvp514x_enum_mbus_code() - V4L2 decoder interface handler for enum_mbus_code
 855  * @sd: pointer to standard V4L2 sub-device structure
 856  * @cfg: pad configuration
 857  * @code: pointer to v4l2_subdev_mbus_code_enum structure
 858  *
 859  * Enumertaes mbus codes supported
 860  */
 861 static int tvp514x_enum_mbus_code(struct v4l2_subdev *sd,
 862                                   struct v4l2_subdev_pad_config *cfg,
 863                                   struct v4l2_subdev_mbus_code_enum *code)
 864 {
 865         u32 pad = code->pad;
 866         u32 index = code->index;
 867 
 868         memset(code, 0, sizeof(*code));
 869         code->index = index;
 870         code->pad = pad;
 871 
 872         if (index != 0)
 873                 return -EINVAL;
 874 
 875         code->code = MEDIA_BUS_FMT_UYVY8_2X8;
 876 
 877         return 0;
 878 }
 879 
 880 /**
 881  * tvp514x_get_pad_format() - V4L2 decoder interface handler for get pad format
 882  * @sd: pointer to standard V4L2 sub-device structure
 883  * @cfg: pad configuration
 884  * @format: pointer to v4l2_subdev_format structure
 885  *
 886  * Retrieves pad format which is active or tried based on requirement
 887  */
 888 static int tvp514x_get_pad_format(struct v4l2_subdev *sd,
 889                                   struct v4l2_subdev_pad_config *cfg,
 890                                   struct v4l2_subdev_format *format)
 891 {
 892         struct tvp514x_decoder *decoder = to_decoder(sd);
 893         __u32 which = format->which;
 894 
 895         if (format->pad)
 896                 return -EINVAL;
 897 
 898         if (which == V4L2_SUBDEV_FORMAT_ACTIVE) {
 899                 format->format = decoder->format;
 900                 return 0;
 901         }
 902 
 903         format->format.code = MEDIA_BUS_FMT_UYVY8_2X8;
 904         format->format.width = tvp514x_std_list[decoder->current_std].width;
 905         format->format.height = tvp514x_std_list[decoder->current_std].height;
 906         format->format.colorspace = V4L2_COLORSPACE_SMPTE170M;
 907         format->format.field = V4L2_FIELD_INTERLACED;
 908 
 909         return 0;
 910 }
 911 
 912 /**
 913  * tvp514x_set_pad_format() - V4L2 decoder interface handler for set pad format
 914  * @sd: pointer to standard V4L2 sub-device structure
 915  * @cfg: pad configuration
 916  * @fmt: pointer to v4l2_subdev_format structure
 917  *
 918  * Set pad format for the output pad
 919  */
 920 static int tvp514x_set_pad_format(struct v4l2_subdev *sd,
 921                                   struct v4l2_subdev_pad_config *cfg,
 922                                   struct v4l2_subdev_format *fmt)
 923 {
 924         struct tvp514x_decoder *decoder = to_decoder(sd);
 925 
 926         if (fmt->format.field != V4L2_FIELD_INTERLACED ||
 927             fmt->format.code != MEDIA_BUS_FMT_UYVY8_2X8 ||
 928             fmt->format.colorspace != V4L2_COLORSPACE_SMPTE170M ||
 929             fmt->format.width != tvp514x_std_list[decoder->current_std].width ||
 930             fmt->format.height != tvp514x_std_list[decoder->current_std].height)
 931                 return -EINVAL;
 932 
 933         decoder->format = fmt->format;
 934 
 935         return 0;
 936 }
 937 
 938 static const struct v4l2_subdev_video_ops tvp514x_video_ops = {
 939         .s_std = tvp514x_s_std,
 940         .s_routing = tvp514x_s_routing,
 941         .querystd = tvp514x_querystd,
 942         .g_frame_interval = tvp514x_g_frame_interval,
 943         .s_frame_interval = tvp514x_s_frame_interval,
 944         .s_stream = tvp514x_s_stream,
 945 };
 946 
 947 static const struct v4l2_subdev_pad_ops tvp514x_pad_ops = {
 948         .enum_mbus_code = tvp514x_enum_mbus_code,
 949         .get_fmt = tvp514x_get_pad_format,
 950         .set_fmt = tvp514x_set_pad_format,
 951 };
 952 
 953 static const struct v4l2_subdev_ops tvp514x_ops = {
 954         .video = &tvp514x_video_ops,
 955         .pad = &tvp514x_pad_ops,
 956 };
 957 
 958 static const struct tvp514x_decoder tvp514x_dev = {
 959         .streaming = 0,
 960         .fmt_list = tvp514x_fmt_list,
 961         .num_fmts = ARRAY_SIZE(tvp514x_fmt_list),
 962         .pix = {
 963                 /* Default to NTSC 8-bit YUV 422 */
 964                 .width          = NTSC_NUM_ACTIVE_PIXELS,
 965                 .height         = NTSC_NUM_ACTIVE_LINES,
 966                 .pixelformat    = V4L2_PIX_FMT_UYVY,
 967                 .field          = V4L2_FIELD_INTERLACED,
 968                 .bytesperline   = NTSC_NUM_ACTIVE_PIXELS * 2,
 969                 .sizeimage      = NTSC_NUM_ACTIVE_PIXELS * 2 *
 970                                         NTSC_NUM_ACTIVE_LINES,
 971                 .colorspace     = V4L2_COLORSPACE_SMPTE170M,
 972                 },
 973         .current_std = STD_NTSC_MJ,
 974         .std_list = tvp514x_std_list,
 975         .num_stds = ARRAY_SIZE(tvp514x_std_list),
 976 
 977 };
 978 
 979 static struct tvp514x_platform_data *
 980 tvp514x_get_pdata(struct i2c_client *client)
 981 {
 982         struct tvp514x_platform_data *pdata = NULL;
 983         struct v4l2_fwnode_endpoint bus_cfg = { .bus_type = 0 };
 984         struct device_node *endpoint;
 985         unsigned int flags;
 986 
 987         if (!IS_ENABLED(CONFIG_OF) || !client->dev.of_node)
 988                 return client->dev.platform_data;
 989 
 990         endpoint = of_graph_get_next_endpoint(client->dev.of_node, NULL);
 991         if (!endpoint)
 992                 return NULL;
 993 
 994         if (v4l2_fwnode_endpoint_parse(of_fwnode_handle(endpoint), &bus_cfg))
 995                 goto done;
 996 
 997         pdata = devm_kzalloc(&client->dev, sizeof(*pdata), GFP_KERNEL);
 998         if (!pdata)
 999                 goto done;
1000 
1001         flags = bus_cfg.bus.parallel.flags;
1002 
1003         if (flags & V4L2_MBUS_HSYNC_ACTIVE_HIGH)
1004                 pdata->hs_polarity = 1;
1005 
1006         if (flags & V4L2_MBUS_VSYNC_ACTIVE_HIGH)
1007                 pdata->vs_polarity = 1;
1008 
1009         if (flags & V4L2_MBUS_PCLK_SAMPLE_RISING)
1010                 pdata->clk_polarity = 1;
1011 
1012 done:
1013         of_node_put(endpoint);
1014         return pdata;
1015 }
1016 
1017 /**
1018  * tvp514x_probe() - decoder driver i2c probe handler
1019  * @client: i2c driver client device structure
1020  * @id: i2c driver id table
1021  *
1022  * Register decoder as an i2c client device and V4L2
1023  * device.
1024  */
1025 static int
1026 tvp514x_probe(struct i2c_client *client, const struct i2c_device_id *id)
1027 {
1028         struct tvp514x_platform_data *pdata = tvp514x_get_pdata(client);
1029         struct tvp514x_decoder *decoder;
1030         struct v4l2_subdev *sd;
1031         int ret;
1032 
1033         if (pdata == NULL) {
1034                 dev_err(&client->dev, "No platform data\n");
1035                 return -EINVAL;
1036         }
1037 
1038         /* Check if the adapter supports the needed features */
1039         if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA))
1040                 return -EIO;
1041 
1042         decoder = devm_kzalloc(&client->dev, sizeof(*decoder), GFP_KERNEL);
1043         if (!decoder)
1044                 return -ENOMEM;
1045 
1046         /* Initialize the tvp514x_decoder with default configuration */
1047         *decoder = tvp514x_dev;
1048         /* Copy default register configuration */
1049         memcpy(decoder->tvp514x_regs, tvp514x_reg_list_default,
1050                         sizeof(tvp514x_reg_list_default));
1051 
1052         decoder->int_seq = (struct tvp514x_reg *)id->driver_data;
1053 
1054         /* Copy board specific information here */
1055         decoder->pdata = pdata;
1056 
1057         /**
1058          * Fetch platform specific data, and configure the
1059          * tvp514x_reg_list[] accordingly. Since this is one
1060          * time configuration, no need to preserve.
1061          */
1062         decoder->tvp514x_regs[REG_OUTPUT_FORMATTER2].val |=
1063                 (decoder->pdata->clk_polarity << 1);
1064         decoder->tvp514x_regs[REG_SYNC_CONTROL].val |=
1065                 ((decoder->pdata->hs_polarity << 2) |
1066                  (decoder->pdata->vs_polarity << 3));
1067         /* Set default standard to auto */
1068         decoder->tvp514x_regs[REG_VIDEO_STD].val =
1069                 VIDEO_STD_AUTO_SWITCH_BIT;
1070 
1071         /* Register with V4L2 layer as slave device */
1072         sd = &decoder->sd;
1073         v4l2_i2c_subdev_init(sd, client, &tvp514x_ops);
1074 
1075 #if defined(CONFIG_MEDIA_CONTROLLER)
1076         decoder->pad.flags = MEDIA_PAD_FL_SOURCE;
1077         decoder->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
1078         decoder->sd.entity.function = MEDIA_ENT_F_ATV_DECODER;
1079 
1080         ret = media_entity_pads_init(&decoder->sd.entity, 1, &decoder->pad);
1081         if (ret < 0) {
1082                 v4l2_err(sd, "%s decoder driver failed to register !!\n",
1083                          sd->name);
1084                 return ret;
1085         }
1086 #endif
1087         v4l2_ctrl_handler_init(&decoder->hdl, 5);
1088         v4l2_ctrl_new_std(&decoder->hdl, &tvp514x_ctrl_ops,
1089                 V4L2_CID_BRIGHTNESS, 0, 255, 1, 128);
1090         v4l2_ctrl_new_std(&decoder->hdl, &tvp514x_ctrl_ops,
1091                 V4L2_CID_CONTRAST, 0, 255, 1, 128);
1092         v4l2_ctrl_new_std(&decoder->hdl, &tvp514x_ctrl_ops,
1093                 V4L2_CID_SATURATION, 0, 255, 1, 128);
1094         v4l2_ctrl_new_std(&decoder->hdl, &tvp514x_ctrl_ops,
1095                 V4L2_CID_HUE, -180, 180, 180, 0);
1096         v4l2_ctrl_new_std(&decoder->hdl, &tvp514x_ctrl_ops,
1097                 V4L2_CID_AUTOGAIN, 0, 1, 1, 1);
1098         sd->ctrl_handler = &decoder->hdl;
1099         if (decoder->hdl.error) {
1100                 ret = decoder->hdl.error;
1101                 goto done;
1102         }
1103         v4l2_ctrl_handler_setup(&decoder->hdl);
1104 
1105         ret = v4l2_async_register_subdev(&decoder->sd);
1106         if (!ret)
1107                 v4l2_info(sd, "%s decoder driver registered !!\n", sd->name);
1108 
1109 done:
1110         if (ret < 0) {
1111                 v4l2_ctrl_handler_free(&decoder->hdl);
1112                 media_entity_cleanup(&decoder->sd.entity);
1113         }
1114         return ret;
1115 }
1116 
1117 /**
1118  * tvp514x_remove() - decoder driver i2c remove handler
1119  * @client: i2c driver client device structure
1120  *
1121  * Unregister decoder as an i2c client device and V4L2
1122  * device. Complement of tvp514x_probe().
1123  */
1124 static int tvp514x_remove(struct i2c_client *client)
1125 {
1126         struct v4l2_subdev *sd = i2c_get_clientdata(client);
1127         struct tvp514x_decoder *decoder = to_decoder(sd);
1128 
1129         v4l2_async_unregister_subdev(&decoder->sd);
1130         media_entity_cleanup(&decoder->sd.entity);
1131         v4l2_ctrl_handler_free(&decoder->hdl);
1132         return 0;
1133 }
1134 /* TVP5146 Init/Power on Sequence */
1135 static const struct tvp514x_reg tvp5146_init_reg_seq[] = {
1136         {TOK_WRITE, REG_VBUS_ADDRESS_ACCESS1, 0x02},
1137         {TOK_WRITE, REG_VBUS_ADDRESS_ACCESS2, 0x00},
1138         {TOK_WRITE, REG_VBUS_ADDRESS_ACCESS3, 0x80},
1139         {TOK_WRITE, REG_VBUS_DATA_ACCESS_NO_VBUS_ADDR_INCR, 0x01},
1140         {TOK_WRITE, REG_VBUS_ADDRESS_ACCESS1, 0x60},
1141         {TOK_WRITE, REG_VBUS_ADDRESS_ACCESS2, 0x00},
1142         {TOK_WRITE, REG_VBUS_ADDRESS_ACCESS3, 0xB0},
1143         {TOK_WRITE, REG_VBUS_DATA_ACCESS_NO_VBUS_ADDR_INCR, 0x01},
1144         {TOK_WRITE, REG_VBUS_DATA_ACCESS_NO_VBUS_ADDR_INCR, 0x00},
1145         {TOK_WRITE, REG_OPERATION_MODE, 0x01},
1146         {TOK_WRITE, REG_OPERATION_MODE, 0x00},
1147         {TOK_TERM, 0, 0},
1148 };
1149 
1150 /* TVP5147 Init/Power on Sequence */
1151 static const struct tvp514x_reg tvp5147_init_reg_seq[] =        {
1152         {TOK_WRITE, REG_VBUS_ADDRESS_ACCESS1, 0x02},
1153         {TOK_WRITE, REG_VBUS_ADDRESS_ACCESS2, 0x00},
1154         {TOK_WRITE, REG_VBUS_ADDRESS_ACCESS3, 0x80},
1155         {TOK_WRITE, REG_VBUS_DATA_ACCESS_NO_VBUS_ADDR_INCR, 0x01},
1156         {TOK_WRITE, REG_VBUS_ADDRESS_ACCESS1, 0x60},
1157         {TOK_WRITE, REG_VBUS_ADDRESS_ACCESS2, 0x00},
1158         {TOK_WRITE, REG_VBUS_ADDRESS_ACCESS3, 0xB0},
1159         {TOK_WRITE, REG_VBUS_DATA_ACCESS_NO_VBUS_ADDR_INCR, 0x01},
1160         {TOK_WRITE, REG_VBUS_ADDRESS_ACCESS1, 0x16},
1161         {TOK_WRITE, REG_VBUS_ADDRESS_ACCESS2, 0x00},
1162         {TOK_WRITE, REG_VBUS_ADDRESS_ACCESS3, 0xA0},
1163         {TOK_WRITE, REG_VBUS_DATA_ACCESS_NO_VBUS_ADDR_INCR, 0x16},
1164         {TOK_WRITE, REG_VBUS_ADDRESS_ACCESS1, 0x60},
1165         {TOK_WRITE, REG_VBUS_ADDRESS_ACCESS2, 0x00},
1166         {TOK_WRITE, REG_VBUS_ADDRESS_ACCESS3, 0xB0},
1167         {TOK_WRITE, REG_VBUS_DATA_ACCESS_NO_VBUS_ADDR_INCR, 0x00},
1168         {TOK_WRITE, REG_OPERATION_MODE, 0x01},
1169         {TOK_WRITE, REG_OPERATION_MODE, 0x00},
1170         {TOK_TERM, 0, 0},
1171 };
1172 
1173 /* TVP5146M2/TVP5147M1 Init/Power on Sequence */
1174 static const struct tvp514x_reg tvp514xm_init_reg_seq[] = {
1175         {TOK_WRITE, REG_OPERATION_MODE, 0x01},
1176         {TOK_WRITE, REG_OPERATION_MODE, 0x00},
1177         {TOK_TERM, 0, 0},
1178 };
1179 
1180 /*
1181  * I2C Device Table -
1182  *
1183  * name - Name of the actual device/chip.
1184  * driver_data - Driver data
1185  */
1186 static const struct i2c_device_id tvp514x_id[] = {
1187         {"tvp5146", (unsigned long)tvp5146_init_reg_seq},
1188         {"tvp5146m2", (unsigned long)tvp514xm_init_reg_seq},
1189         {"tvp5147", (unsigned long)tvp5147_init_reg_seq},
1190         {"tvp5147m1", (unsigned long)tvp514xm_init_reg_seq},
1191         {},
1192 };
1193 
1194 MODULE_DEVICE_TABLE(i2c, tvp514x_id);
1195 
1196 #if IS_ENABLED(CONFIG_OF)
1197 static const struct of_device_id tvp514x_of_match[] = {
1198         { .compatible = "ti,tvp5146", },
1199         { .compatible = "ti,tvp5146m2", },
1200         { .compatible = "ti,tvp5147", },
1201         { .compatible = "ti,tvp5147m1", },
1202         { /* sentinel */ },
1203 };
1204 MODULE_DEVICE_TABLE(of, tvp514x_of_match);
1205 #endif
1206 
1207 static struct i2c_driver tvp514x_driver = {
1208         .driver = {
1209                 .of_match_table = of_match_ptr(tvp514x_of_match),
1210                 .name = TVP514X_MODULE_NAME,
1211         },
1212         .probe = tvp514x_probe,
1213         .remove = tvp514x_remove,
1214         .id_table = tvp514x_id,
1215 };
1216 
1217 module_i2c_driver(tvp514x_driver);
/* [<][>][^][v][top][bottom][index][help] */
root/drivers/media/i2c/tvp514x.c

DEFINITIONS
