diff options
Diffstat (limited to 'drivers/media/i2c/tvp514x.c')
| -rw-r--r-- | drivers/media/i2c/tvp514x.c | 1226 |
1 files changed, 1226 insertions, 0 deletions
diff --git a/drivers/media/i2c/tvp514x.c b/drivers/media/i2c/tvp514x.c new file mode 100644 index 000000000..675b9ae21 --- /dev/null +++ b/drivers/media/i2c/tvp514x.c @@ -0,0 +1,1226 @@ +/* + * 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> + * + * 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. + * + */ + +#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 informations + * @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; + 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); |