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linux/drivers/media/i2c/tvp514x.c
Thomas Gleixner f2e3bd9a5a treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 486 
Based on 1 normalized pattern(s):

  this package is free software you can redistribute it and or modify
  it under the terms of the gnu general public license version 2 as
  published by the free software foundation this program is
  distributed in the hope that it will be useful but without any
  warranty without even the implied warranty of merchantability or
  fitness for a particular purpose see the gnu general public license
  for more details

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-only

has been chosen to replace the boilerplate/reference in 3 file(s).

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Enrico Weigelt <info@metux.net>
Reviewed-by: Allison Randal <allison@lohutok.net>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190604081205.116017757@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-06-19 17:09:52 +02:00

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// SPDX-License-Identifier: GPL-2.0-only
/*
* drivers/media/i2c/tvp514x.c
*
* TI TVP5146/47 decoder driver
*
* Copyright (C) 2008 Texas Instruments Inc
* Author: Vaibhav Hiremath <hvaibhav@ti.com>
*
* Contributors:
* Sivaraj R <sivaraj@ti.com>
* Brijesh R Jadav <brijesh.j@ti.com>
* Hardik Shah <hardik.shah@ti.com>
* Manjunath Hadli <mrh@ti.com>
* Karicheri Muralidharan <m-karicheri2@ti.com>
* Prabhakar Lad <prabhakar.lad@ti.com>
*/
#include <linux/i2c.h>
#include <linux/slab.h>
#include <linux/delay.h>
#include <linux/videodev2.h>
#include <linux/module.h>
#include <linux/v4l2-mediabus.h>
#include <linux/of.h>
#include <linux/of_graph.h>
#include <media/v4l2-async.h>
#include <media/v4l2-device.h>
#include <media/v4l2-common.h>
#include <media/v4l2-mediabus.h>
#include <media/v4l2-fwnode.h>
#include <media/v4l2-ctrls.h>
#include <media/i2c/tvp514x.h>
#include <media/media-entity.h>
#include "tvp514x_regs.h"
/* Private macros for TVP */
#define I2C_RETRY_COUNT (5)
#define LOCK_RETRY_COUNT (5)
#define LOCK_RETRY_DELAY (200)
/* Debug functions */
static bool debug;
module_param(debug, bool, 0644);
MODULE_PARM_DESC(debug, "Debug level (0-1)");
MODULE_AUTHOR("Texas Instruments");
MODULE_DESCRIPTION("TVP514X linux decoder driver");
MODULE_LICENSE("GPL");
/* enum tvp514x_std - enum for supported standards */
enum tvp514x_std {
STD_NTSC_MJ = 0,
STD_PAL_BDGHIN,
STD_INVALID
};
/**
* struct tvp514x_std_info - Structure to store standard information
* @width: Line width in pixels
* @height:Number of active lines
* @video_std: Value to write in REG_VIDEO_STD register
* @standard: v4l2 standard structure information
*/
struct tvp514x_std_info {
unsigned long width;
unsigned long height;
u8 video_std;
struct v4l2_standard standard;
};
static struct tvp514x_reg tvp514x_reg_list_default[0x40];
static int tvp514x_s_stream(struct v4l2_subdev *sd, int enable);
/**
* struct tvp514x_decoder - TVP5146/47 decoder object
* @sd: Subdevice Slave handle
* @hdl: embedded &struct v4l2_ctrl_handler
* @tvp514x_regs: copy of hw's regs with preset values.
* @pdata: Board specific
* @ver: Chip version
* @streaming: TVP5146/47 decoder streaming - enabled or disabled.
* @pix: Current pixel format
* @num_fmts: Number of formats
* @fmt_list: Format list
* @current_std: Current standard
* @num_stds: Number of standards
* @std_list: Standards list
* @input: Input routing at chip level
* @output: Output routing at chip level
* @pad: subdev media pad associated with the decoder
* @format: media bus frame format
* @int_seq: driver's register init sequence
*/
struct tvp514x_decoder {
struct v4l2_subdev sd;
struct v4l2_ctrl_handler hdl;
struct tvp514x_reg tvp514x_regs[ARRAY_SIZE(tvp514x_reg_list_default)];
const struct tvp514x_platform_data *pdata;
int ver;
int streaming;
struct v4l2_pix_format pix;
int num_fmts;
const struct v4l2_fmtdesc *fmt_list;
enum tvp514x_std current_std;
int num_stds;
const struct tvp514x_std_info *std_list;
/* Input and Output Routing parameters */
u32 input;
u32 output;
/* mc related members */
struct media_pad pad;
struct v4l2_mbus_framefmt format;
struct tvp514x_reg *int_seq;
};
/* TVP514x default register values */
static struct tvp514x_reg tvp514x_reg_list_default[] = {
/* Composite selected */
{TOK_WRITE, REG_INPUT_SEL, 0x05},
{TOK_WRITE, REG_AFE_GAIN_CTRL, 0x0F},
/* Auto mode */
{TOK_WRITE, REG_VIDEO_STD, 0x00},
{TOK_WRITE, REG_OPERATION_MODE, 0x00},
{TOK_SKIP, REG_AUTOSWITCH_MASK, 0x3F},
{TOK_WRITE, REG_COLOR_KILLER, 0x10},
{TOK_WRITE, REG_LUMA_CONTROL1, 0x00},
{TOK_WRITE, REG_LUMA_CONTROL2, 0x00},
{TOK_WRITE, REG_LUMA_CONTROL3, 0x02},
{TOK_WRITE, REG_BRIGHTNESS, 0x80},
{TOK_WRITE, REG_CONTRAST, 0x80},
{TOK_WRITE, REG_SATURATION, 0x80},
{TOK_WRITE, REG_HUE, 0x00},
{TOK_WRITE, REG_CHROMA_CONTROL1, 0x00},
{TOK_WRITE, REG_CHROMA_CONTROL2, 0x0E},
/* Reserved */
{TOK_SKIP, 0x0F, 0x00},
{TOK_WRITE, REG_COMP_PR_SATURATION, 0x80},
{TOK_WRITE, REG_COMP_Y_CONTRAST, 0x80},
{TOK_WRITE, REG_COMP_PB_SATURATION, 0x80},
/* Reserved */
{TOK_SKIP, 0x13, 0x00},
{TOK_WRITE, REG_COMP_Y_BRIGHTNESS, 0x80},
/* Reserved */
{TOK_SKIP, 0x15, 0x00},
/* NTSC timing */
{TOK_SKIP, REG_AVID_START_PIXEL_LSB, 0x55},
{TOK_SKIP, REG_AVID_START_PIXEL_MSB, 0x00},
{TOK_SKIP, REG_AVID_STOP_PIXEL_LSB, 0x25},
{TOK_SKIP, REG_AVID_STOP_PIXEL_MSB, 0x03},
/* NTSC timing */
{TOK_SKIP, REG_HSYNC_START_PIXEL_LSB, 0x00},
{TOK_SKIP, REG_HSYNC_START_PIXEL_MSB, 0x00},
{TOK_SKIP, REG_HSYNC_STOP_PIXEL_LSB, 0x40},
{TOK_SKIP, REG_HSYNC_STOP_PIXEL_MSB, 0x00},
/* NTSC timing */
{TOK_SKIP, REG_VSYNC_START_LINE_LSB, 0x04},
{TOK_SKIP, REG_VSYNC_START_LINE_MSB, 0x00},
{TOK_SKIP, REG_VSYNC_STOP_LINE_LSB, 0x07},
{TOK_SKIP, REG_VSYNC_STOP_LINE_MSB, 0x00},
/* NTSC timing */
{TOK_SKIP, REG_VBLK_START_LINE_LSB, 0x01},
{TOK_SKIP, REG_VBLK_START_LINE_MSB, 0x00},
{TOK_SKIP, REG_VBLK_STOP_LINE_LSB, 0x15},
{TOK_SKIP, REG_VBLK_STOP_LINE_MSB, 0x00},
/* Reserved */
{TOK_SKIP, 0x26, 0x00},
/* Reserved */
{TOK_SKIP, 0x27, 0x00},
{TOK_SKIP, REG_FAST_SWTICH_CONTROL, 0xCC},
/* Reserved */
{TOK_SKIP, 0x29, 0x00},
{TOK_SKIP, REG_FAST_SWTICH_SCART_DELAY, 0x00},
/* Reserved */
{TOK_SKIP, 0x2B, 0x00},
{TOK_SKIP, REG_SCART_DELAY, 0x00},
{TOK_SKIP, REG_CTI_DELAY, 0x00},
{TOK_SKIP, REG_CTI_CONTROL, 0x00},
/* Reserved */
{TOK_SKIP, 0x2F, 0x00},
/* Reserved */
{TOK_SKIP, 0x30, 0x00},
/* Reserved */
{TOK_SKIP, 0x31, 0x00},
/* HS, VS active high */
{TOK_WRITE, REG_SYNC_CONTROL, 0x00},
/* 10-bit BT.656 */
{TOK_WRITE, REG_OUTPUT_FORMATTER1, 0x00},
/* Enable clk & data */
{TOK_WRITE, REG_OUTPUT_FORMATTER2, 0x11},
/* Enable AVID & FLD */
{TOK_WRITE, REG_OUTPUT_FORMATTER3, 0xEE},
/* Enable VS & HS */
{TOK_WRITE, REG_OUTPUT_FORMATTER4, 0xAF},
{TOK_WRITE, REG_OUTPUT_FORMATTER5, 0xFF},
{TOK_WRITE, REG_OUTPUT_FORMATTER6, 0xFF},
/* Clear status */
{TOK_WRITE, REG_CLEAR_LOST_LOCK, 0x01},
{TOK_TERM, 0, 0},
};
/*
* List of image formats supported by TVP5146/47 decoder
* Currently we are using 8 bit mode only, but can be
* extended to 10/20 bit mode.
*/
static const struct v4l2_fmtdesc tvp514x_fmt_list[] = {
{
.index = 0,
.type = V4L2_BUF_TYPE_VIDEO_CAPTURE,
.flags = 0,
.description = "8-bit UYVY 4:2:2 Format",
.pixelformat = V4L2_PIX_FMT_UYVY,
},
};
/*
* Supported standards -
*
* Currently supports two standards only, need to add support for rest of the
* modes, like SECAM, etc...
*/
static const struct tvp514x_std_info tvp514x_std_list[] = {
/* Standard: STD_NTSC_MJ */
[STD_NTSC_MJ] = {
.width = NTSC_NUM_ACTIVE_PIXELS,
.height = NTSC_NUM_ACTIVE_LINES,
.video_std = VIDEO_STD_NTSC_MJ_BIT,
.standard = {
.index = 0,
.id = V4L2_STD_NTSC,
.name = "NTSC",
.frameperiod = {1001, 30000},
.framelines = 525
},
/* Standard: STD_PAL_BDGHIN */
},
[STD_PAL_BDGHIN] = {
.width = PAL_NUM_ACTIVE_PIXELS,
.height = PAL_NUM_ACTIVE_LINES,
.video_std = VIDEO_STD_PAL_BDGHIN_BIT,
.standard = {
.index = 1,
.id = V4L2_STD_PAL,
.name = "PAL",
.frameperiod = {1, 25},
.framelines = 625
},
},
/* Standard: need to add for additional standard */
};
static inline struct tvp514x_decoder *to_decoder(struct v4l2_subdev *sd)
{
return container_of(sd, struct tvp514x_decoder, sd);
}
static inline struct v4l2_subdev *to_sd(struct v4l2_ctrl *ctrl)
{
return &container_of(ctrl->handler, struct tvp514x_decoder, hdl)->sd;
}
/**
* tvp514x_read_reg() - Read a value from a register in an TVP5146/47.
* @sd: ptr to v4l2_subdev struct
* @reg: TVP5146/47 register address
*
* Returns value read if successful, or non-zero (-1) otherwise.
*/
static int tvp514x_read_reg(struct v4l2_subdev *sd, u8 reg)
{
int err, retry = 0;
struct i2c_client *client = v4l2_get_subdevdata(sd);
read_again:
err = i2c_smbus_read_byte_data(client, reg);
if (err < 0) {
if (retry <= I2C_RETRY_COUNT) {
v4l2_warn(sd, "Read: retry ... %d\n", retry);
retry++;
msleep_interruptible(10);
goto read_again;
}
}
return err;
}
/**
* dump_reg() - dump the register content of TVP5146/47.
* @sd: ptr to v4l2_subdev struct
* @reg: TVP5146/47 register address
*/
static void dump_reg(struct v4l2_subdev *sd, u8 reg)
{
u32 val;
val = tvp514x_read_reg(sd, reg);
v4l2_info(sd, "Reg(0x%.2X): 0x%.2X\n", reg, val);
}
/**
* tvp514x_write_reg() - Write a value to a register in TVP5146/47
* @sd: ptr to v4l2_subdev struct
* @reg: TVP5146/47 register address
* @val: value to be written to the register
*
* Write a value to a register in an TVP5146/47 decoder device.
* Returns zero if successful, or non-zero otherwise.
*/
static int tvp514x_write_reg(struct v4l2_subdev *sd, u8 reg, u8 val)
{
int err, retry = 0;
struct i2c_client *client = v4l2_get_subdevdata(sd);
write_again:
err = i2c_smbus_write_byte_data(client, reg, val);
if (err) {
if (retry <= I2C_RETRY_COUNT) {
v4l2_warn(sd, "Write: retry ... %d\n", retry);
retry++;
msleep_interruptible(10);
goto write_again;
}
}
return err;
}
/**
* tvp514x_write_regs() : Initializes a list of TVP5146/47 registers
* @sd: ptr to v4l2_subdev struct
* @reglist: list of TVP5146/47 registers and values
*
* Initializes a list of TVP5146/47 registers:-
* if token is TOK_TERM, then entire write operation terminates
* if token is TOK_DELAY, then a delay of 'val' msec is introduced
* if token is TOK_SKIP, then the register write is skipped
* if token is TOK_WRITE, then the register write is performed
* Returns zero if successful, or non-zero otherwise.
*/
static int tvp514x_write_regs(struct v4l2_subdev *sd,
const struct tvp514x_reg reglist[])
{
int err;
const struct tvp514x_reg *next = reglist;
for (; next->token != TOK_TERM; next++) {
if (next->token == TOK_DELAY) {
msleep(next->val);
continue;
}
if (next->token == TOK_SKIP)
continue;
err = tvp514x_write_reg(sd, next->reg, (u8) next->val);
if (err) {
v4l2_err(sd, "Write failed. Err[%d]\n", err);
return err;
}
}
return 0;
}
/**
* tvp514x_query_current_std() : Query the current standard detected by TVP5146/47
* @sd: ptr to v4l2_subdev struct
*
* Returns the current standard detected by TVP5146/47, STD_INVALID if there is no
* standard detected.
*/
static enum tvp514x_std tvp514x_query_current_std(struct v4l2_subdev *sd)
{
u8 std, std_status;
std = tvp514x_read_reg(sd, REG_VIDEO_STD);
if ((std & VIDEO_STD_MASK) == VIDEO_STD_AUTO_SWITCH_BIT)
/* use the standard status register */
std_status = tvp514x_read_reg(sd, REG_VIDEO_STD_STATUS);
else
/* use the standard register itself */
std_status = std;
switch (std_status & VIDEO_STD_MASK) {
case VIDEO_STD_NTSC_MJ_BIT:
return STD_NTSC_MJ;
case VIDEO_STD_PAL_BDGHIN_BIT:
return STD_PAL_BDGHIN;
default:
return STD_INVALID;
}
return STD_INVALID;
}
/* TVP5146/47 register dump function */
static void tvp514x_reg_dump(struct v4l2_subdev *sd)
{
dump_reg(sd, REG_INPUT_SEL);
dump_reg(sd, REG_AFE_GAIN_CTRL);
dump_reg(sd, REG_VIDEO_STD);
dump_reg(sd, REG_OPERATION_MODE);
dump_reg(sd, REG_COLOR_KILLER);
dump_reg(sd, REG_LUMA_CONTROL1);
dump_reg(sd, REG_LUMA_CONTROL2);
dump_reg(sd, REG_LUMA_CONTROL3);
dump_reg(sd, REG_BRIGHTNESS);
dump_reg(sd, REG_CONTRAST);
dump_reg(sd, REG_SATURATION);
dump_reg(sd, REG_HUE);
dump_reg(sd, REG_CHROMA_CONTROL1);
dump_reg(sd, REG_CHROMA_CONTROL2);
dump_reg(sd, REG_COMP_PR_SATURATION);
dump_reg(sd, REG_COMP_Y_CONTRAST);
dump_reg(sd, REG_COMP_PB_SATURATION);
dump_reg(sd, REG_COMP_Y_BRIGHTNESS);
dump_reg(sd, REG_AVID_START_PIXEL_LSB);
dump_reg(sd, REG_AVID_START_PIXEL_MSB);
dump_reg(sd, REG_AVID_STOP_PIXEL_LSB);
dump_reg(sd, REG_AVID_STOP_PIXEL_MSB);
dump_reg(sd, REG_HSYNC_START_PIXEL_LSB);
dump_reg(sd, REG_HSYNC_START_PIXEL_MSB);
dump_reg(sd, REG_HSYNC_STOP_PIXEL_LSB);
dump_reg(sd, REG_HSYNC_STOP_PIXEL_MSB);
dump_reg(sd, REG_VSYNC_START_LINE_LSB);
dump_reg(sd, REG_VSYNC_START_LINE_MSB);
dump_reg(sd, REG_VSYNC_STOP_LINE_LSB);
dump_reg(sd, REG_VSYNC_STOP_LINE_MSB);
dump_reg(sd, REG_VBLK_START_LINE_LSB);
dump_reg(sd, REG_VBLK_START_LINE_MSB);
dump_reg(sd, REG_VBLK_STOP_LINE_LSB);
dump_reg(sd, REG_VBLK_STOP_LINE_MSB);
dump_reg(sd, REG_SYNC_CONTROL);
dump_reg(sd, REG_OUTPUT_FORMATTER1);
dump_reg(sd, REG_OUTPUT_FORMATTER2);
dump_reg(sd, REG_OUTPUT_FORMATTER3);
dump_reg(sd, REG_OUTPUT_FORMATTER4);
dump_reg(sd, REG_OUTPUT_FORMATTER5);
dump_reg(sd, REG_OUTPUT_FORMATTER6);
dump_reg(sd, REG_CLEAR_LOST_LOCK);
}
/**
* tvp514x_configure() - Configure the TVP5146/47 registers
* @sd: ptr to v4l2_subdev struct
* @decoder: ptr to tvp514x_decoder structure
*
* Returns zero if successful, or non-zero otherwise.
*/
static int tvp514x_configure(struct v4l2_subdev *sd,
struct tvp514x_decoder *decoder)
{
int err;
/* common register initialization */
err =
tvp514x_write_regs(sd, decoder->tvp514x_regs);
if (err)
return err;
if (debug)
tvp514x_reg_dump(sd);
return 0;
}
/**
* tvp514x_detect() - Detect if an tvp514x is present, and if so which revision.
* @sd: pointer to standard V4L2 sub-device structure
* @decoder: pointer to tvp514x_decoder structure
*
* A device is considered to be detected if the chip ID (LSB and MSB)
* registers match the expected values.
* Any value of the rom version register is accepted.
* Returns ENODEV error number if no device is detected, or zero
* if a device is detected.
*/
static int tvp514x_detect(struct v4l2_subdev *sd,
struct tvp514x_decoder *decoder)
{
u8 chip_id_msb, chip_id_lsb, rom_ver;
struct i2c_client *client = v4l2_get_subdevdata(sd);
chip_id_msb = tvp514x_read_reg(sd, REG_CHIP_ID_MSB);
chip_id_lsb = tvp514x_read_reg(sd, REG_CHIP_ID_LSB);
rom_ver = tvp514x_read_reg(sd, REG_ROM_VERSION);
v4l2_dbg(1, debug, sd,
"chip id detected msb:0x%x lsb:0x%x rom version:0x%x\n",
chip_id_msb, chip_id_lsb, rom_ver);
if ((chip_id_msb != TVP514X_CHIP_ID_MSB)
|| ((chip_id_lsb != TVP5146_CHIP_ID_LSB)
&& (chip_id_lsb != TVP5147_CHIP_ID_LSB))) {
/* We didn't read the values we expected, so this must not be
* an TVP5146/47.
*/
v4l2_err(sd, "chip id mismatch msb:0x%x lsb:0x%x\n",
chip_id_msb, chip_id_lsb);
return -ENODEV;
}
decoder->ver = rom_ver;
v4l2_info(sd, "%s (Version - 0x%.2x) found at 0x%x (%s)\n",
client->name, decoder->ver,
client->addr << 1, client->adapter->name);
return 0;
}
/**
* tvp514x_querystd() - V4L2 decoder interface handler for querystd
* @sd: pointer to standard V4L2 sub-device structure
* @std_id: standard V4L2 std_id ioctl enum
*
* Returns the current standard detected by TVP5146/47. If no active input is
* detected then *std_id is set to 0 and the function returns 0.
*/
static int tvp514x_querystd(struct v4l2_subdev *sd, v4l2_std_id *std_id)
{
struct tvp514x_decoder *decoder = to_decoder(sd);
enum tvp514x_std current_std;
enum tvp514x_input input_sel;
u8 sync_lock_status, lock_mask;
if (std_id == NULL)
return -EINVAL;
/* To query the standard the TVP514x must power on the ADCs. */
if (!decoder->streaming) {
tvp514x_s_stream(sd, 1);
msleep(LOCK_RETRY_DELAY);
}
/* query the current standard */
current_std = tvp514x_query_current_std(sd);
if (current_std == STD_INVALID) {
*std_id = V4L2_STD_UNKNOWN;
return 0;
}
input_sel = decoder->input;
switch (input_sel) {
case INPUT_CVBS_VI1A:
case INPUT_CVBS_VI1B:
case INPUT_CVBS_VI1C:
case INPUT_CVBS_VI2A:
case INPUT_CVBS_VI2B:
case INPUT_CVBS_VI2C:
case INPUT_CVBS_VI3A:
case INPUT_CVBS_VI3B:
case INPUT_CVBS_VI3C:
case INPUT_CVBS_VI4A:
lock_mask = STATUS_CLR_SUBCAR_LOCK_BIT |
STATUS_HORZ_SYNC_LOCK_BIT |
STATUS_VIRT_SYNC_LOCK_BIT;
break;
case INPUT_SVIDEO_VI2A_VI1A:
case INPUT_SVIDEO_VI2B_VI1B:
case INPUT_SVIDEO_VI2C_VI1C:
case INPUT_SVIDEO_VI2A_VI3A:
case INPUT_SVIDEO_VI2B_VI3B:
case INPUT_SVIDEO_VI2C_VI3C:
case INPUT_SVIDEO_VI4A_VI1A:
case INPUT_SVIDEO_VI4A_VI1B:
case INPUT_SVIDEO_VI4A_VI1C:
case INPUT_SVIDEO_VI4A_VI3A:
case INPUT_SVIDEO_VI4A_VI3B:
case INPUT_SVIDEO_VI4A_VI3C:
lock_mask = STATUS_HORZ_SYNC_LOCK_BIT |
STATUS_VIRT_SYNC_LOCK_BIT;
break;
/*Need to add other interfaces*/
default:
return -EINVAL;
}
/* check whether signal is locked */
sync_lock_status = tvp514x_read_reg(sd, REG_STATUS1);
if (lock_mask != (sync_lock_status & lock_mask)) {
*std_id = V4L2_STD_UNKNOWN;
return 0; /* No input detected */
}
*std_id &= decoder->std_list[current_std].standard.id;
v4l2_dbg(1, debug, sd, "Current STD: %s\n",
decoder->std_list[current_std].standard.name);
return 0;
}
/**
* tvp514x_s_std() - V4L2 decoder interface handler for s_std
* @sd: pointer to standard V4L2 sub-device structure
* @std_id: standard V4L2 v4l2_std_id ioctl enum
*
* If std_id is supported, sets the requested standard. Otherwise, returns
* -EINVAL
*/
static int tvp514x_s_std(struct v4l2_subdev *sd, v4l2_std_id std_id)
{
struct tvp514x_decoder *decoder = to_decoder(sd);
int err, i;
for (i = 0; i < decoder->num_stds; i++)
if (std_id & decoder->std_list[i].standard.id)
break;
if ((i == decoder->num_stds) || (i == STD_INVALID))
return -EINVAL;
err = tvp514x_write_reg(sd, REG_VIDEO_STD,
decoder->std_list[i].video_std);
if (err)
return err;
decoder->current_std = i;
decoder->tvp514x_regs[REG_VIDEO_STD].val =
decoder->std_list[i].video_std;
v4l2_dbg(1, debug, sd, "Standard set to: %s\n",
decoder->std_list[i].standard.name);
return 0;
}
/**
* tvp514x_s_routing() - V4L2 decoder interface handler for s_routing
* @sd: pointer to standard V4L2 sub-device structure
* @input: input selector for routing the signal
* @output: output selector for routing the signal
* @config: config value. Not used
*
* If index is valid, selects the requested input. Otherwise, returns -EINVAL if
* the input is not supported or there is no active signal present in the
* selected input.
*/
static int tvp514x_s_routing(struct v4l2_subdev *sd,
u32 input, u32 output, u32 config)
{
struct tvp514x_decoder *decoder = to_decoder(sd);
int err;
enum tvp514x_input input_sel;
enum tvp514x_output output_sel;
if ((input >= INPUT_INVALID) ||
(output >= OUTPUT_INVALID))
/* Index out of bound */
return -EINVAL;
input_sel = input;
output_sel = output;
err = tvp514x_write_reg(sd, REG_INPUT_SEL, input_sel);
if (err)
return err;
output_sel |= tvp514x_read_reg(sd,
REG_OUTPUT_FORMATTER1) & 0x7;
err = tvp514x_write_reg(sd, REG_OUTPUT_FORMATTER1,
output_sel);
if (err)
return err;
decoder->tvp514x_regs[REG_INPUT_SEL].val = input_sel;
decoder->tvp514x_regs[REG_OUTPUT_FORMATTER1].val = output_sel;
decoder->input = input;
decoder->output = output;
v4l2_dbg(1, debug, sd, "Input set to: %d\n", input_sel);
return 0;
}
/**
* tvp514x_s_ctrl() - V4L2 decoder interface handler for s_ctrl
* @ctrl: pointer to v4l2_ctrl structure
*
* If the requested control is supported, sets the control's current
* value in HW. Otherwise, returns -EINVAL if the control is not supported.
*/
static int tvp514x_s_ctrl(struct v4l2_ctrl *ctrl)
{
struct v4l2_subdev *sd = to_sd(ctrl);
struct tvp514x_decoder *decoder = to_decoder(sd);
int err = -EINVAL, value;
value = ctrl->val;
switch (ctrl->id) {
case V4L2_CID_BRIGHTNESS:
err = tvp514x_write_reg(sd, REG_BRIGHTNESS, value);
if (!err)
decoder->tvp514x_regs[REG_BRIGHTNESS].val = value;
break;
case V4L2_CID_CONTRAST:
err = tvp514x_write_reg(sd, REG_CONTRAST, value);
if (!err)
decoder->tvp514x_regs[REG_CONTRAST].val = value;
break;
case V4L2_CID_SATURATION:
err = tvp514x_write_reg(sd, REG_SATURATION, value);
if (!err)
decoder->tvp514x_regs[REG_SATURATION].val = value;
break;
case V4L2_CID_HUE:
if (value == 180)
value = 0x7F;
else if (value == -180)
value = 0x80;
err = tvp514x_write_reg(sd, REG_HUE, value);
if (!err)
decoder->tvp514x_regs[REG_HUE].val = value;
break;
case V4L2_CID_AUTOGAIN:
err = tvp514x_write_reg(sd, REG_AFE_GAIN_CTRL, value ? 0x0f : 0x0c);
if (!err)
decoder->tvp514x_regs[REG_AFE_GAIN_CTRL].val = value;
break;
}
v4l2_dbg(1, debug, sd, "Set Control: ID - %d - %d\n",
ctrl->id, ctrl->val);
return err;
}
/**
* tvp514x_g_frame_interval() - V4L2 decoder interface handler
* @sd: pointer to standard V4L2 sub-device structure
* @ival: pointer to a v4l2_subdev_frame_interval structure
*
* Returns the decoder's video CAPTURE parameters.
*/
static int
tvp514x_g_frame_interval(struct v4l2_subdev *sd,
struct v4l2_subdev_frame_interval *ival)
{
struct tvp514x_decoder *decoder = to_decoder(sd);
enum tvp514x_std current_std;
/* get the current standard */
current_std = decoder->current_std;
ival->interval =
decoder->std_list[current_std].standard.frameperiod;
return 0;
}
/**
* tvp514x_s_frame_interval() - V4L2 decoder interface handler
* @sd: pointer to standard V4L2 sub-device structure
* @ival: pointer to a v4l2_subdev_frame_interval structure
*
* Configures the decoder to use the input parameters, if possible. If
* not possible, returns the appropriate error code.
*/
static int
tvp514x_s_frame_interval(struct v4l2_subdev *sd,
struct v4l2_subdev_frame_interval *ival)
{
struct tvp514x_decoder *decoder = to_decoder(sd);
struct v4l2_fract *timeperframe;
enum tvp514x_std current_std;
timeperframe = &ival->interval;
/* get the current standard */
current_std = decoder->current_std;
*timeperframe =
decoder->std_list[current_std].standard.frameperiod;
return 0;
}
/**
* tvp514x_s_stream() - V4L2 decoder i/f handler for s_stream
* @sd: pointer to standard V4L2 sub-device structure
* @enable: streaming enable or disable
*
* Sets streaming to enable or disable, if possible.
*/
static int tvp514x_s_stream(struct v4l2_subdev *sd, int enable)
{
int err = 0;
struct tvp514x_decoder *decoder = to_decoder(sd);
if (decoder->streaming == enable)
return 0;
switch (enable) {
case 0:
{
/* Power Down Sequence */
err = tvp514x_write_reg(sd, REG_OPERATION_MODE, 0x01);
if (err) {
v4l2_err(sd, "Unable to turn off decoder\n");
return err;
}
decoder->streaming = enable;
break;
}
case 1:
{
/* Power Up Sequence */
err = tvp514x_write_regs(sd, decoder->int_seq);
if (err) {
v4l2_err(sd, "Unable to turn on decoder\n");
return err;
}
/* Detect if not already detected */
err = tvp514x_detect(sd, decoder);
if (err) {
v4l2_err(sd, "Unable to detect decoder\n");
return err;
}
err = tvp514x_configure(sd, decoder);
if (err) {
v4l2_err(sd, "Unable to configure decoder\n");
return err;
}
decoder->streaming = enable;
break;
}
default:
err = -ENODEV;
break;
}
return err;
}
static const struct v4l2_ctrl_ops tvp514x_ctrl_ops = {
.s_ctrl = tvp514x_s_ctrl,
};
/**
* tvp514x_enum_mbus_code() - V4L2 decoder interface handler for enum_mbus_code
* @sd: pointer to standard V4L2 sub-device structure
* @cfg: pad configuration
* @code: pointer to v4l2_subdev_mbus_code_enum structure
*
* Enumertaes mbus codes supported
*/
static int tvp514x_enum_mbus_code(struct v4l2_subdev *sd,
struct v4l2_subdev_pad_config *cfg,
struct v4l2_subdev_mbus_code_enum *code)
{
u32 pad = code->pad;
u32 index = code->index;
memset(code, 0, sizeof(*code));
code->index = index;
code->pad = pad;
if (index != 0)
return -EINVAL;
code->code = MEDIA_BUS_FMT_UYVY8_2X8;
return 0;
}
/**
* tvp514x_get_pad_format() - V4L2 decoder interface handler for get pad format
* @sd: pointer to standard V4L2 sub-device structure
* @cfg: pad configuration
* @format: pointer to v4l2_subdev_format structure
*
* Retrieves pad format which is active or tried based on requirement
*/
static int tvp514x_get_pad_format(struct v4l2_subdev *sd,
struct v4l2_subdev_pad_config *cfg,
struct v4l2_subdev_format *format)
{
struct tvp514x_decoder *decoder = to_decoder(sd);
__u32 which = format->which;
if (format->pad)
return -EINVAL;
if (which == V4L2_SUBDEV_FORMAT_ACTIVE) {
format->format = decoder->format;
return 0;
}
format->format.code = MEDIA_BUS_FMT_UYVY8_2X8;
format->format.width = tvp514x_std_list[decoder->current_std].width;
format->format.height = tvp514x_std_list[decoder->current_std].height;
format->format.colorspace = V4L2_COLORSPACE_SMPTE170M;
format->format.field = V4L2_FIELD_INTERLACED;
return 0;
}
/**
* tvp514x_set_pad_format() - V4L2 decoder interface handler for set pad format
* @sd: pointer to standard V4L2 sub-device structure
* @cfg: pad configuration
* @fmt: pointer to v4l2_subdev_format structure
*
* Set pad format for the output pad
*/
static int tvp514x_set_pad_format(struct v4l2_subdev *sd,
struct v4l2_subdev_pad_config *cfg,
struct v4l2_subdev_format *fmt)
{
struct tvp514x_decoder *decoder = to_decoder(sd);
if (fmt->format.field != V4L2_FIELD_INTERLACED ||
fmt->format.code != MEDIA_BUS_FMT_UYVY8_2X8 ||
fmt->format.colorspace != V4L2_COLORSPACE_SMPTE170M ||
fmt->format.width != tvp514x_std_list[decoder->current_std].width ||
fmt->format.height != tvp514x_std_list[decoder->current_std].height)
return -EINVAL;
decoder->format = fmt->format;
return 0;
}
static const struct v4l2_subdev_video_ops tvp514x_video_ops = {
.s_std = tvp514x_s_std,
.s_routing = tvp514x_s_routing,
.querystd = tvp514x_querystd,
.g_frame_interval = tvp514x_g_frame_interval,
.s_frame_interval = tvp514x_s_frame_interval,
.s_stream = tvp514x_s_stream,
};
static const struct v4l2_subdev_pad_ops tvp514x_pad_ops = {
.enum_mbus_code = tvp514x_enum_mbus_code,
.get_fmt = tvp514x_get_pad_format,
.set_fmt = tvp514x_set_pad_format,
};
static const struct v4l2_subdev_ops tvp514x_ops = {
.video = &tvp514x_video_ops,
.pad = &tvp514x_pad_ops,
};
static const struct tvp514x_decoder tvp514x_dev = {
.streaming = 0,
.fmt_list = tvp514x_fmt_list,
.num_fmts = ARRAY_SIZE(tvp514x_fmt_list),
.pix = {
/* Default to NTSC 8-bit YUV 422 */
.width = NTSC_NUM_ACTIVE_PIXELS,
.height = NTSC_NUM_ACTIVE_LINES,
.pixelformat = V4L2_PIX_FMT_UYVY,
.field = V4L2_FIELD_INTERLACED,
.bytesperline = NTSC_NUM_ACTIVE_PIXELS * 2,
.sizeimage = NTSC_NUM_ACTIVE_PIXELS * 2 *
NTSC_NUM_ACTIVE_LINES,
.colorspace = V4L2_COLORSPACE_SMPTE170M,
},
.current_std = STD_NTSC_MJ,
.std_list = tvp514x_std_list,
.num_stds = ARRAY_SIZE(tvp514x_std_list),
};
static struct tvp514x_platform_data *
tvp514x_get_pdata(struct i2c_client *client)
{
struct tvp514x_platform_data *pdata = NULL;
struct v4l2_fwnode_endpoint bus_cfg = { .bus_type = 0 };
struct device_node *endpoint;
unsigned int flags;
if (!IS_ENABLED(CONFIG_OF) || !client->dev.of_node)
return client->dev.platform_data;
endpoint = of_graph_get_next_endpoint(client->dev.of_node, NULL);
if (!endpoint)
return NULL;
if (v4l2_fwnode_endpoint_parse(of_fwnode_handle(endpoint), &bus_cfg))
goto done;
pdata = devm_kzalloc(&client->dev, sizeof(*pdata), GFP_KERNEL);
if (!pdata)
goto done;
flags = bus_cfg.bus.parallel.flags;
if (flags & V4L2_MBUS_HSYNC_ACTIVE_HIGH)
pdata->hs_polarity = 1;
if (flags & V4L2_MBUS_VSYNC_ACTIVE_HIGH)
pdata->vs_polarity = 1;
if (flags & V4L2_MBUS_PCLK_SAMPLE_RISING)
pdata->clk_polarity = 1;
done:
of_node_put(endpoint);
return pdata;
}
/**
* tvp514x_probe() - decoder driver i2c probe handler
* @client: i2c driver client device structure
* @id: i2c driver id table
*
* Register decoder as an i2c client device and V4L2
* device.
*/
static int
tvp514x_probe(struct i2c_client *client, const struct i2c_device_id *id)
{
struct tvp514x_platform_data *pdata = tvp514x_get_pdata(client);
struct tvp514x_decoder *decoder;
struct v4l2_subdev *sd;
int ret;
if (pdata == NULL) {
dev_err(&client->dev, "No platform data\n");
return -EINVAL;
}
/* Check if the adapter supports the needed features */
if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA))
return -EIO;
decoder = devm_kzalloc(&client->dev, sizeof(*decoder), GFP_KERNEL);
if (!decoder)
return -ENOMEM;
/* Initialize the tvp514x_decoder with default configuration */
*decoder = tvp514x_dev;
/* Copy default register configuration */
memcpy(decoder->tvp514x_regs, tvp514x_reg_list_default,
sizeof(tvp514x_reg_list_default));
decoder->int_seq = (struct tvp514x_reg *)id->driver_data;
/* Copy board specific information here */
decoder->pdata = pdata;
/**
* Fetch platform specific data, and configure the
* tvp514x_reg_list[] accordingly. Since this is one
* time configuration, no need to preserve.
*/
decoder->tvp514x_regs[REG_OUTPUT_FORMATTER2].val |=
(decoder->pdata->clk_polarity << 1);
decoder->tvp514x_regs[REG_SYNC_CONTROL].val |=
((decoder->pdata->hs_polarity << 2) |
(decoder->pdata->vs_polarity << 3));
/* Set default standard to auto */
decoder->tvp514x_regs[REG_VIDEO_STD].val =
VIDEO_STD_AUTO_SWITCH_BIT;
/* Register with V4L2 layer as slave device */
sd = &decoder->sd;
v4l2_i2c_subdev_init(sd, client, &tvp514x_ops);
#if defined(CONFIG_MEDIA_CONTROLLER)
decoder->pad.flags = MEDIA_PAD_FL_SOURCE;
decoder->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
decoder->sd.entity.function = MEDIA_ENT_F_ATV_DECODER;
ret = media_entity_pads_init(&decoder->sd.entity, 1, &decoder->pad);
if (ret < 0) {
v4l2_err(sd, "%s decoder driver failed to register !!\n",
sd->name);
return ret;
}
#endif
v4l2_ctrl_handler_init(&decoder->hdl, 5);
v4l2_ctrl_new_std(&decoder->hdl, &tvp514x_ctrl_ops,
V4L2_CID_BRIGHTNESS, 0, 255, 1, 128);
v4l2_ctrl_new_std(&decoder->hdl, &tvp514x_ctrl_ops,
V4L2_CID_CONTRAST, 0, 255, 1, 128);
v4l2_ctrl_new_std(&decoder->hdl, &tvp514x_ctrl_ops,
V4L2_CID_SATURATION, 0, 255, 1, 128);
v4l2_ctrl_new_std(&decoder->hdl, &tvp514x_ctrl_ops,
V4L2_CID_HUE, -180, 180, 180, 0);
v4l2_ctrl_new_std(&decoder->hdl, &tvp514x_ctrl_ops,
V4L2_CID_AUTOGAIN, 0, 1, 1, 1);
sd->ctrl_handler = &decoder->hdl;
if (decoder->hdl.error) {
ret = decoder->hdl.error;
goto done;
}
v4l2_ctrl_handler_setup(&decoder->hdl);
ret = v4l2_async_register_subdev(&decoder->sd);
if (!ret)
v4l2_info(sd, "%s decoder driver registered !!\n", sd->name);
done:
if (ret < 0) {
v4l2_ctrl_handler_free(&decoder->hdl);
media_entity_cleanup(&decoder->sd.entity);
}
return ret;
}
/**
* tvp514x_remove() - decoder driver i2c remove handler
* @client: i2c driver client device structure
*
* Unregister decoder as an i2c client device and V4L2
* device. Complement of tvp514x_probe().
*/
static int tvp514x_remove(struct i2c_client *client)
{
struct v4l2_subdev *sd = i2c_get_clientdata(client);
struct tvp514x_decoder *decoder = to_decoder(sd);
v4l2_async_unregister_subdev(&decoder->sd);
media_entity_cleanup(&decoder->sd.entity);
v4l2_ctrl_handler_free(&decoder->hdl);
return 0;
}
/* TVP5146 Init/Power on Sequence */
static const struct tvp514x_reg tvp5146_init_reg_seq[] = {
{TOK_WRITE, REG_VBUS_ADDRESS_ACCESS1, 0x02},
{TOK_WRITE, REG_VBUS_ADDRESS_ACCESS2, 0x00},
{TOK_WRITE, REG_VBUS_ADDRESS_ACCESS3, 0x80},
{TOK_WRITE, REG_VBUS_DATA_ACCESS_NO_VBUS_ADDR_INCR, 0x01},
{TOK_WRITE, REG_VBUS_ADDRESS_ACCESS1, 0x60},
{TOK_WRITE, REG_VBUS_ADDRESS_ACCESS2, 0x00},
{TOK_WRITE, REG_VBUS_ADDRESS_ACCESS3, 0xB0},
{TOK_WRITE, REG_VBUS_DATA_ACCESS_NO_VBUS_ADDR_INCR, 0x01},
{TOK_WRITE, REG_VBUS_DATA_ACCESS_NO_VBUS_ADDR_INCR, 0x00},
{TOK_WRITE, REG_OPERATION_MODE, 0x01},
{TOK_WRITE, REG_OPERATION_MODE, 0x00},
{TOK_TERM, 0, 0},
};
/* TVP5147 Init/Power on Sequence */
static const struct tvp514x_reg tvp5147_init_reg_seq[] = {
{TOK_WRITE, REG_VBUS_ADDRESS_ACCESS1, 0x02},
{TOK_WRITE, REG_VBUS_ADDRESS_ACCESS2, 0x00},
{TOK_WRITE, REG_VBUS_ADDRESS_ACCESS3, 0x80},
{TOK_WRITE, REG_VBUS_DATA_ACCESS_NO_VBUS_ADDR_INCR, 0x01},
{TOK_WRITE, REG_VBUS_ADDRESS_ACCESS1, 0x60},
{TOK_WRITE, REG_VBUS_ADDRESS_ACCESS2, 0x00},
{TOK_WRITE, REG_VBUS_ADDRESS_ACCESS3, 0xB0},
{TOK_WRITE, REG_VBUS_DATA_ACCESS_NO_VBUS_ADDR_INCR, 0x01},
{TOK_WRITE, REG_VBUS_ADDRESS_ACCESS1, 0x16},
{TOK_WRITE, REG_VBUS_ADDRESS_ACCESS2, 0x00},
{TOK_WRITE, REG_VBUS_ADDRESS_ACCESS3, 0xA0},
{TOK_WRITE, REG_VBUS_DATA_ACCESS_NO_VBUS_ADDR_INCR, 0x16},
{TOK_WRITE, REG_VBUS_ADDRESS_ACCESS1, 0x60},
{TOK_WRITE, REG_VBUS_ADDRESS_ACCESS2, 0x00},
{TOK_WRITE, REG_VBUS_ADDRESS_ACCESS3, 0xB0},
{TOK_WRITE, REG_VBUS_DATA_ACCESS_NO_VBUS_ADDR_INCR, 0x00},
{TOK_WRITE, REG_OPERATION_MODE, 0x01},
{TOK_WRITE, REG_OPERATION_MODE, 0x00},
{TOK_TERM, 0, 0},
};
/* TVP5146M2/TVP5147M1 Init/Power on Sequence */
static const struct tvp514x_reg tvp514xm_init_reg_seq[] = {
{TOK_WRITE, REG_OPERATION_MODE, 0x01},
{TOK_WRITE, REG_OPERATION_MODE, 0x00},
{TOK_TERM, 0, 0},
};
/*
* I2C Device Table -
*
* name - Name of the actual device/chip.
* driver_data - Driver data
*/
static const struct i2c_device_id tvp514x_id[] = {
{"tvp5146", (unsigned long)tvp5146_init_reg_seq},
{"tvp5146m2", (unsigned long)tvp514xm_init_reg_seq},
{"tvp5147", (unsigned long)tvp5147_init_reg_seq},
{"tvp5147m1", (unsigned long)tvp514xm_init_reg_seq},
{},
};
MODULE_DEVICE_TABLE(i2c, tvp514x_id);
#if IS_ENABLED(CONFIG_OF)
static const struct of_device_id tvp514x_of_match[] = {
{ .compatible = "ti,tvp5146", },
{ .compatible = "ti,tvp5146m2", },
{ .compatible = "ti,tvp5147", },
{ .compatible = "ti,tvp5147m1", },
{ /* sentinel */ },
};
MODULE_DEVICE_TABLE(of, tvp514x_of_match);
#endif
static struct i2c_driver tvp514x_driver = {
.driver = {
.of_match_table = of_match_ptr(tvp514x_of_match),
.name = TVP514X_MODULE_NAME,
},
.probe = tvp514x_probe,
.remove = tvp514x_remove,
.id_table = tvp514x_id,
};
module_i2c_driver(tvp514x_driver);
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