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linux/drivers/media/i2c/tvp7002.c
Sakari Ailus 60359a28d5 media: v4l: fwnode: Initialise the V4L2 fwnode endpoints to zero 
Initialise the V4L2 fwnode endpoints to zero in all drivers using
v4l2_fwnode_endpoint_parse(). This prepares for setting default endpoint
flags as well as the bus type. Setting bus type to zero will continue to
guess the bus among the guessable set (parallel, Bt.656 and CSI-2 D-PHY).

Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Tested-by: Steve Longerbeam <steve_longerbeam@mentor.com>
Tested-by: Jacopo Mondi <jacopo+renesas@jmondi.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
2018-10-04 16:21:02 -04:00

1093 lines
32 KiB
C
Raw Blame History

/* Texas Instruments Triple 8-/10-BIT 165-/110-MSPS Video and Graphics
* Digitizer with Horizontal PLL registers
*
* Copyright (C) 2009 Texas Instruments Inc
* Author: Santiago Nunez-Corrales <santiago.nunez@ridgerun.com>
*
* This code is partially based upon the TVP5150 driver
* written by Mauro Carvalho Chehab <mchehab@kernel.org>,
* the TVP514x driver written by Vaibhav Hiremath <hvaibhav@ti.com>
* and the TVP7002 driver in the TI LSP 2.10.00.14. Revisions by
* Muralidharan Karicheri and Snehaprabha Narnakaje (TI).
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* 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/delay.h>
#include <linux/i2c.h>
#include <linux/slab.h>
#include <linux/videodev2.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/of_graph.h>
#include <linux/v4l2-dv-timings.h>
#include <media/i2c/tvp7002.h>
#include <media/v4l2-async.h>
#include <media/v4l2-device.h>
#include <media/v4l2-common.h>
#include <media/v4l2-ctrls.h>
#include <media/v4l2-fwnode.h>
#include "tvp7002_reg.h"
MODULE_DESCRIPTION("TI TVP7002 Video and Graphics Digitizer driver");
MODULE_AUTHOR("Santiago Nunez-Corrales <santiago.nunez@ridgerun.com>");
MODULE_LICENSE("GPL");
/* I2C retry attempts */
#define I2C_RETRY_COUNT (5)
/* End of registers */
#define TVP7002_EOR 0x5c
/* Read write definition for registers */
#define TVP7002_READ 0
#define TVP7002_WRITE 1
#define TVP7002_RESERVED 2
/* Interlaced vs progressive mask and shift */
#define TVP7002_IP_SHIFT 5
#define TVP7002_INPR_MASK (0x01 << TVP7002_IP_SHIFT)
/* Shift for CPL and LPF registers */
#define TVP7002_CL_SHIFT 8
#define TVP7002_CL_MASK 0x0f
/* Debug functions */
static bool debug;
module_param(debug, bool, 0644);
MODULE_PARM_DESC(debug, "Debug level (0-2)");
/* Structure for register values */
struct i2c_reg_value {
u8 reg;
u8 value;
u8 type;
};
/*
* Register default values (according to tvp7002 datasheet)
* In the case of read-only registers, the value (0xff) is
* never written. R/W functionality is controlled by the
* writable bit in the register struct definition.
*/
static const struct i2c_reg_value tvp7002_init_default[] = {
{ TVP7002_CHIP_REV, 0xff, TVP7002_READ },
{ TVP7002_HPLL_FDBK_DIV_MSBS, 0x67, TVP7002_WRITE },
{ TVP7002_HPLL_FDBK_DIV_LSBS, 0x20, TVP7002_WRITE },
{ TVP7002_HPLL_CRTL, 0xa0, TVP7002_WRITE },
{ TVP7002_HPLL_PHASE_SEL, 0x80, TVP7002_WRITE },
{ TVP7002_CLAMP_START, 0x32, TVP7002_WRITE },
{ TVP7002_CLAMP_W, 0x20, TVP7002_WRITE },
{ TVP7002_HSYNC_OUT_W, 0x60, TVP7002_WRITE },
{ TVP7002_B_FINE_GAIN, 0x00, TVP7002_WRITE },
{ TVP7002_G_FINE_GAIN, 0x00, TVP7002_WRITE },
{ TVP7002_R_FINE_GAIN, 0x00, TVP7002_WRITE },
{ TVP7002_B_FINE_OFF_MSBS, 0x80, TVP7002_WRITE },
{ TVP7002_G_FINE_OFF_MSBS, 0x80, TVP7002_WRITE },
{ TVP7002_R_FINE_OFF_MSBS, 0x80, TVP7002_WRITE },
{ TVP7002_SYNC_CTL_1, 0x20, TVP7002_WRITE },
{ TVP7002_HPLL_AND_CLAMP_CTL, 0x2e, TVP7002_WRITE },
{ TVP7002_SYNC_ON_G_THRS, 0x5d, TVP7002_WRITE },
{ TVP7002_SYNC_SEPARATOR_THRS, 0x47, TVP7002_WRITE },
{ TVP7002_HPLL_PRE_COAST, 0x00, TVP7002_WRITE },
{ TVP7002_HPLL_POST_COAST, 0x00, TVP7002_WRITE },
{ TVP7002_SYNC_DETECT_STAT, 0xff, TVP7002_READ },
{ TVP7002_OUT_FORMATTER, 0x47, TVP7002_WRITE },
{ TVP7002_MISC_CTL_1, 0x01, TVP7002_WRITE },
{ TVP7002_MISC_CTL_2, 0x00, TVP7002_WRITE },
{ TVP7002_MISC_CTL_3, 0x01, TVP7002_WRITE },
{ TVP7002_IN_MUX_SEL_1, 0x00, TVP7002_WRITE },
{ TVP7002_IN_MUX_SEL_2, 0x67, TVP7002_WRITE },
{ TVP7002_B_AND_G_COARSE_GAIN, 0x77, TVP7002_WRITE },
{ TVP7002_R_COARSE_GAIN, 0x07, TVP7002_WRITE },
{ TVP7002_FINE_OFF_LSBS, 0x00, TVP7002_WRITE },
{ TVP7002_B_COARSE_OFF, 0x10, TVP7002_WRITE },
{ TVP7002_G_COARSE_OFF, 0x10, TVP7002_WRITE },
{ TVP7002_R_COARSE_OFF, 0x10, TVP7002_WRITE },
{ TVP7002_HSOUT_OUT_START, 0x08, TVP7002_WRITE },
{ TVP7002_MISC_CTL_4, 0x00, TVP7002_WRITE },
{ TVP7002_B_DGTL_ALC_OUT_LSBS, 0xff, TVP7002_READ },
{ TVP7002_G_DGTL_ALC_OUT_LSBS, 0xff, TVP7002_READ },
{ TVP7002_R_DGTL_ALC_OUT_LSBS, 0xff, TVP7002_READ },
{ TVP7002_AUTO_LVL_CTL_ENABLE, 0x80, TVP7002_WRITE },
{ TVP7002_DGTL_ALC_OUT_MSBS, 0xff, TVP7002_READ },
{ TVP7002_AUTO_LVL_CTL_FILTER, 0x53, TVP7002_WRITE },
{ 0x29, 0x08, TVP7002_RESERVED },
{ TVP7002_FINE_CLAMP_CTL, 0x07, TVP7002_WRITE },
/* PWR_CTL is controlled only by the probe and reset functions */
{ TVP7002_PWR_CTL, 0x00, TVP7002_RESERVED },
{ TVP7002_ADC_SETUP, 0x50, TVP7002_WRITE },
{ TVP7002_COARSE_CLAMP_CTL, 0x00, TVP7002_WRITE },
{ TVP7002_SOG_CLAMP, 0x80, TVP7002_WRITE },
{ TVP7002_RGB_COARSE_CLAMP_CTL, 0x8c, TVP7002_WRITE },
{ TVP7002_SOG_COARSE_CLAMP_CTL, 0x04, TVP7002_WRITE },
{ TVP7002_ALC_PLACEMENT, 0x5a, TVP7002_WRITE },
{ 0x32, 0x18, TVP7002_RESERVED },
{ 0x33, 0x60, TVP7002_RESERVED },
{ TVP7002_MVIS_STRIPPER_W, 0xff, TVP7002_RESERVED },
{ TVP7002_VSYNC_ALGN, 0x10, TVP7002_WRITE },
{ TVP7002_SYNC_BYPASS, 0x00, TVP7002_WRITE },
{ TVP7002_L_FRAME_STAT_LSBS, 0xff, TVP7002_READ },
{ TVP7002_L_FRAME_STAT_MSBS, 0xff, TVP7002_READ },
{ TVP7002_CLK_L_STAT_LSBS, 0xff, TVP7002_READ },
{ TVP7002_CLK_L_STAT_MSBS, 0xff, TVP7002_READ },
{ TVP7002_HSYNC_W, 0xff, TVP7002_READ },
{ TVP7002_VSYNC_W, 0xff, TVP7002_READ },
{ TVP7002_L_LENGTH_TOL, 0x03, TVP7002_WRITE },
{ 0x3e, 0x60, TVP7002_RESERVED },
{ TVP7002_VIDEO_BWTH_CTL, 0x01, TVP7002_WRITE },
{ TVP7002_AVID_START_PIXEL_LSBS, 0x01, TVP7002_WRITE },
{ TVP7002_AVID_START_PIXEL_MSBS, 0x2c, TVP7002_WRITE },
{ TVP7002_AVID_STOP_PIXEL_LSBS, 0x06, TVP7002_WRITE },
{ TVP7002_AVID_STOP_PIXEL_MSBS, 0x2c, TVP7002_WRITE },
{ TVP7002_VBLK_F_0_START_L_OFF, 0x05, TVP7002_WRITE },
{ TVP7002_VBLK_F_1_START_L_OFF, 0x00, TVP7002_WRITE },
{ TVP7002_VBLK_F_0_DURATION, 0x1e, TVP7002_WRITE },
{ TVP7002_VBLK_F_1_DURATION, 0x00, TVP7002_WRITE },
{ TVP7002_FBIT_F_0_START_L_OFF, 0x00, TVP7002_WRITE },
{ TVP7002_FBIT_F_1_START_L_OFF, 0x00, TVP7002_WRITE },
{ TVP7002_YUV_Y_G_COEF_LSBS, 0xe3, TVP7002_WRITE },
{ TVP7002_YUV_Y_G_COEF_MSBS, 0x16, TVP7002_WRITE },
{ TVP7002_YUV_Y_B_COEF_LSBS, 0x4f, TVP7002_WRITE },
{ TVP7002_YUV_Y_B_COEF_MSBS, 0x02, TVP7002_WRITE },
{ TVP7002_YUV_Y_R_COEF_LSBS, 0xce, TVP7002_WRITE },
{ TVP7002_YUV_Y_R_COEF_MSBS, 0x06, TVP7002_WRITE },
{ TVP7002_YUV_U_G_COEF_LSBS, 0xab, TVP7002_WRITE },
{ TVP7002_YUV_U_G_COEF_MSBS, 0xf3, TVP7002_WRITE },
{ TVP7002_YUV_U_B_COEF_LSBS, 0x00, TVP7002_WRITE },
{ TVP7002_YUV_U_B_COEF_MSBS, 0x10, TVP7002_WRITE },
{ TVP7002_YUV_U_R_COEF_LSBS, 0x55, TVP7002_WRITE },
{ TVP7002_YUV_U_R_COEF_MSBS, 0xfc, TVP7002_WRITE },
{ TVP7002_YUV_V_G_COEF_LSBS, 0x78, TVP7002_WRITE },
{ TVP7002_YUV_V_G_COEF_MSBS, 0xf1, TVP7002_WRITE },
{ TVP7002_YUV_V_B_COEF_LSBS, 0x88, TVP7002_WRITE },
{ TVP7002_YUV_V_B_COEF_MSBS, 0xfe, TVP7002_WRITE },
{ TVP7002_YUV_V_R_COEF_LSBS, 0x00, TVP7002_WRITE },
{ TVP7002_YUV_V_R_COEF_MSBS, 0x10, TVP7002_WRITE },
/* This signals end of register values */
{ TVP7002_EOR, 0xff, TVP7002_RESERVED }
};
/* Register parameters for 480P */
static const struct i2c_reg_value tvp7002_parms_480P[] = {
{ TVP7002_HPLL_FDBK_DIV_MSBS, 0x35, TVP7002_WRITE },
{ TVP7002_HPLL_FDBK_DIV_LSBS, 0xa0, TVP7002_WRITE },
{ TVP7002_HPLL_CRTL, 0x02, TVP7002_WRITE },
{ TVP7002_AVID_START_PIXEL_LSBS, 0x91, TVP7002_WRITE },
{ TVP7002_AVID_START_PIXEL_MSBS, 0x00, TVP7002_WRITE },
{ TVP7002_AVID_STOP_PIXEL_LSBS, 0x0B, TVP7002_WRITE },
{ TVP7002_AVID_STOP_PIXEL_MSBS, 0x00, TVP7002_WRITE },
{ TVP7002_VBLK_F_0_START_L_OFF, 0x03, TVP7002_WRITE },
{ TVP7002_VBLK_F_1_START_L_OFF, 0x01, TVP7002_WRITE },
{ TVP7002_VBLK_F_0_DURATION, 0x13, TVP7002_WRITE },
{ TVP7002_VBLK_F_1_DURATION, 0x13, TVP7002_WRITE },
{ TVP7002_ALC_PLACEMENT, 0x18, TVP7002_WRITE },
{ TVP7002_CLAMP_START, 0x06, TVP7002_WRITE },
{ TVP7002_CLAMP_W, 0x10, TVP7002_WRITE },
{ TVP7002_HPLL_PRE_COAST, 0x03, TVP7002_WRITE },
{ TVP7002_HPLL_POST_COAST, 0x03, TVP7002_WRITE },
{ TVP7002_EOR, 0xff, TVP7002_RESERVED }
};
/* Register parameters for 576P */
static const struct i2c_reg_value tvp7002_parms_576P[] = {
{ TVP7002_HPLL_FDBK_DIV_MSBS, 0x36, TVP7002_WRITE },
{ TVP7002_HPLL_FDBK_DIV_LSBS, 0x00, TVP7002_WRITE },
{ TVP7002_HPLL_CRTL, 0x18, TVP7002_WRITE },
{ TVP7002_AVID_START_PIXEL_LSBS, 0x9B, TVP7002_WRITE },
{ TVP7002_AVID_START_PIXEL_MSBS, 0x00, TVP7002_WRITE },
{ TVP7002_AVID_STOP_PIXEL_LSBS, 0x0F, TVP7002_WRITE },
{ TVP7002_AVID_STOP_PIXEL_MSBS, 0x00, TVP7002_WRITE },
{ TVP7002_VBLK_F_0_START_L_OFF, 0x00, TVP7002_WRITE },
{ TVP7002_VBLK_F_1_START_L_OFF, 0x00, TVP7002_WRITE },
{ TVP7002_VBLK_F_0_DURATION, 0x2D, TVP7002_WRITE },
{ TVP7002_VBLK_F_1_DURATION, 0x00, TVP7002_WRITE },
{ TVP7002_ALC_PLACEMENT, 0x18, TVP7002_WRITE },
{ TVP7002_CLAMP_START, 0x06, TVP7002_WRITE },
{ TVP7002_CLAMP_W, 0x10, TVP7002_WRITE },
{ TVP7002_HPLL_PRE_COAST, 0x03, TVP7002_WRITE },
{ TVP7002_HPLL_POST_COAST, 0x03, TVP7002_WRITE },
{ TVP7002_EOR, 0xff, TVP7002_RESERVED }
};
/* Register parameters for 1080I60 */
static const struct i2c_reg_value tvp7002_parms_1080I60[] = {
{ TVP7002_HPLL_FDBK_DIV_MSBS, 0x89, TVP7002_WRITE },
{ TVP7002_HPLL_FDBK_DIV_LSBS, 0x80, TVP7002_WRITE },
{ TVP7002_HPLL_CRTL, 0x98, TVP7002_WRITE },
{ TVP7002_AVID_START_PIXEL_LSBS, 0x06, TVP7002_WRITE },
{ TVP7002_AVID_START_PIXEL_MSBS, 0x01, TVP7002_WRITE },
{ TVP7002_AVID_STOP_PIXEL_LSBS, 0x8a, TVP7002_WRITE },
{ TVP7002_AVID_STOP_PIXEL_MSBS, 0x08, TVP7002_WRITE },
{ TVP7002_VBLK_F_0_START_L_OFF, 0x02, TVP7002_WRITE },
{ TVP7002_VBLK_F_1_START_L_OFF, 0x02, TVP7002_WRITE },
{ TVP7002_VBLK_F_0_DURATION, 0x16, TVP7002_WRITE },
{ TVP7002_VBLK_F_1_DURATION, 0x17, TVP7002_WRITE },
{ TVP7002_ALC_PLACEMENT, 0x5a, TVP7002_WRITE },
{ TVP7002_CLAMP_START, 0x32, TVP7002_WRITE },
{ TVP7002_CLAMP_W, 0x20, TVP7002_WRITE },
{ TVP7002_HPLL_PRE_COAST, 0x01, TVP7002_WRITE },
{ TVP7002_HPLL_POST_COAST, 0x00, TVP7002_WRITE },
{ TVP7002_EOR, 0xff, TVP7002_RESERVED }
};
/* Register parameters for 1080P60 */
static const struct i2c_reg_value tvp7002_parms_1080P60[] = {
{ TVP7002_HPLL_FDBK_DIV_MSBS, 0x89, TVP7002_WRITE },
{ TVP7002_HPLL_FDBK_DIV_LSBS, 0x80, TVP7002_WRITE },
{ TVP7002_HPLL_CRTL, 0xE0, TVP7002_WRITE },
{ TVP7002_AVID_START_PIXEL_LSBS, 0x06, TVP7002_WRITE },
{ TVP7002_AVID_START_PIXEL_MSBS, 0x01, TVP7002_WRITE },
{ TVP7002_AVID_STOP_PIXEL_LSBS, 0x8a, TVP7002_WRITE },
{ TVP7002_AVID_STOP_PIXEL_MSBS, 0x08, TVP7002_WRITE },
{ TVP7002_VBLK_F_0_START_L_OFF, 0x02, TVP7002_WRITE },
{ TVP7002_VBLK_F_1_START_L_OFF, 0x02, TVP7002_WRITE },
{ TVP7002_VBLK_F_0_DURATION, 0x16, TVP7002_WRITE },
{ TVP7002_VBLK_F_1_DURATION, 0x17, TVP7002_WRITE },
{ TVP7002_ALC_PLACEMENT, 0x5a, TVP7002_WRITE },
{ TVP7002_CLAMP_START, 0x32, TVP7002_WRITE },
{ TVP7002_CLAMP_W, 0x20, TVP7002_WRITE },
{ TVP7002_HPLL_PRE_COAST, 0x01, TVP7002_WRITE },
{ TVP7002_HPLL_POST_COAST, 0x00, TVP7002_WRITE },
{ TVP7002_EOR, 0xff, TVP7002_RESERVED }
};
/* Register parameters for 1080I50 */
static const struct i2c_reg_value tvp7002_parms_1080I50[] = {
{ TVP7002_HPLL_FDBK_DIV_MSBS, 0xa5, TVP7002_WRITE },
{ TVP7002_HPLL_FDBK_DIV_LSBS, 0x00, TVP7002_WRITE },
{ TVP7002_HPLL_CRTL, 0x98, TVP7002_WRITE },
{ TVP7002_AVID_START_PIXEL_LSBS, 0x06, TVP7002_WRITE },
{ TVP7002_AVID_START_PIXEL_MSBS, 0x01, TVP7002_WRITE },
{ TVP7002_AVID_STOP_PIXEL_LSBS, 0x8a, TVP7002_WRITE },
{ TVP7002_AVID_STOP_PIXEL_MSBS, 0x08, TVP7002_WRITE },
{ TVP7002_VBLK_F_0_START_L_OFF, 0x02, TVP7002_WRITE },
{ TVP7002_VBLK_F_1_START_L_OFF, 0x02, TVP7002_WRITE },
{ TVP7002_VBLK_F_0_DURATION, 0x16, TVP7002_WRITE },
{ TVP7002_VBLK_F_1_DURATION, 0x17, TVP7002_WRITE },
{ TVP7002_ALC_PLACEMENT, 0x5a, TVP7002_WRITE },
{ TVP7002_CLAMP_START, 0x32, TVP7002_WRITE },
{ TVP7002_CLAMP_W, 0x20, TVP7002_WRITE },
{ TVP7002_HPLL_PRE_COAST, 0x01, TVP7002_WRITE },
{ TVP7002_HPLL_POST_COAST, 0x00, TVP7002_WRITE },
{ TVP7002_EOR, 0xff, TVP7002_RESERVED }
};
/* Register parameters for 720P60 */
static const struct i2c_reg_value tvp7002_parms_720P60[] = {
{ TVP7002_HPLL_FDBK_DIV_MSBS, 0x67, TVP7002_WRITE },
{ TVP7002_HPLL_FDBK_DIV_LSBS, 0x20, TVP7002_WRITE },
{ TVP7002_HPLL_CRTL, 0xa0, TVP7002_WRITE },
{ TVP7002_AVID_START_PIXEL_LSBS, 0x47, TVP7002_WRITE },
{ TVP7002_AVID_START_PIXEL_MSBS, 0x01, TVP7002_WRITE },
{ TVP7002_AVID_STOP_PIXEL_LSBS, 0x4B, TVP7002_WRITE },
{ TVP7002_AVID_STOP_PIXEL_MSBS, 0x06, TVP7002_WRITE },
{ TVP7002_VBLK_F_0_START_L_OFF, 0x05, TVP7002_WRITE },
{ TVP7002_VBLK_F_1_START_L_OFF, 0x00, TVP7002_WRITE },
{ TVP7002_VBLK_F_0_DURATION, 0x2D, TVP7002_WRITE },
{ TVP7002_VBLK_F_1_DURATION, 0x00, TVP7002_WRITE },
{ TVP7002_ALC_PLACEMENT, 0x5a, TVP7002_WRITE },
{ TVP7002_CLAMP_START, 0x32, TVP7002_WRITE },
{ TVP7002_CLAMP_W, 0x20, TVP7002_WRITE },
{ TVP7002_HPLL_PRE_COAST, 0x00, TVP7002_WRITE },
{ TVP7002_HPLL_POST_COAST, 0x00, TVP7002_WRITE },
{ TVP7002_EOR, 0xff, TVP7002_RESERVED }
};
/* Register parameters for 720P50 */
static const struct i2c_reg_value tvp7002_parms_720P50[] = {
{ TVP7002_HPLL_FDBK_DIV_MSBS, 0x7b, TVP7002_WRITE },
{ TVP7002_HPLL_FDBK_DIV_LSBS, 0xc0, TVP7002_WRITE },
{ TVP7002_HPLL_CRTL, 0x98, TVP7002_WRITE },
{ TVP7002_AVID_START_PIXEL_LSBS, 0x47, TVP7002_WRITE },
{ TVP7002_AVID_START_PIXEL_MSBS, 0x01, TVP7002_WRITE },
{ TVP7002_AVID_STOP_PIXEL_LSBS, 0x4B, TVP7002_WRITE },
{ TVP7002_AVID_STOP_PIXEL_MSBS, 0x06, TVP7002_WRITE },
{ TVP7002_VBLK_F_0_START_L_OFF, 0x05, TVP7002_WRITE },
{ TVP7002_VBLK_F_1_START_L_OFF, 0x00, TVP7002_WRITE },
{ TVP7002_VBLK_F_0_DURATION, 0x2D, TVP7002_WRITE },
{ TVP7002_VBLK_F_1_DURATION, 0x00, TVP7002_WRITE },
{ TVP7002_ALC_PLACEMENT, 0x5a, TVP7002_WRITE },
{ TVP7002_CLAMP_START, 0x32, TVP7002_WRITE },
{ TVP7002_CLAMP_W, 0x20, TVP7002_WRITE },
{ TVP7002_HPLL_PRE_COAST, 0x01, TVP7002_WRITE },
{ TVP7002_HPLL_POST_COAST, 0x00, TVP7002_WRITE },
{ TVP7002_EOR, 0xff, TVP7002_RESERVED }
};
/* Timings definition for handling device operation */
struct tvp7002_timings_definition {
struct v4l2_dv_timings timings;
const struct i2c_reg_value *p_settings;
enum v4l2_colorspace color_space;
enum v4l2_field scanmode;
u16 progressive;
u16 lines_per_frame;
u16 cpl_min;
u16 cpl_max;
};
/* Struct list for digital video timings */
static const struct tvp7002_timings_definition tvp7002_timings[] = {
{
V4L2_DV_BT_CEA_1280X720P60,
tvp7002_parms_720P60,
V4L2_COLORSPACE_REC709,
V4L2_FIELD_NONE,
1,
0x2EE,
135,
153
},
{
V4L2_DV_BT_CEA_1920X1080I60,
tvp7002_parms_1080I60,
V4L2_COLORSPACE_REC709,
V4L2_FIELD_INTERLACED,
0,
0x465,
181,
205
},
{
V4L2_DV_BT_CEA_1920X1080I50,
tvp7002_parms_1080I50,
V4L2_COLORSPACE_REC709,
V4L2_FIELD_INTERLACED,
0,
0x465,
217,
245
},
{
V4L2_DV_BT_CEA_1280X720P50,
tvp7002_parms_720P50,
V4L2_COLORSPACE_REC709,
V4L2_FIELD_NONE,
1,
0x2EE,
163,
183
},
{
V4L2_DV_BT_CEA_1920X1080P60,
tvp7002_parms_1080P60,
V4L2_COLORSPACE_REC709,
V4L2_FIELD_NONE,
1,
0x465,
90,
102
},
{
V4L2_DV_BT_CEA_720X480P59_94,
tvp7002_parms_480P,
V4L2_COLORSPACE_SMPTE170M,
V4L2_FIELD_NONE,
1,
0x20D,
0xffff,
0xffff
},
{
V4L2_DV_BT_CEA_720X576P50,
tvp7002_parms_576P,
V4L2_COLORSPACE_SMPTE170M,
V4L2_FIELD_NONE,
1,
0x271,
0xffff,
0xffff
}
};
#define NUM_TIMINGS ARRAY_SIZE(tvp7002_timings)
/* Device definition */
struct tvp7002 {
struct v4l2_subdev sd;
struct v4l2_ctrl_handler hdl;
const struct tvp7002_config *pdata;
int ver;
int streaming;
const struct tvp7002_timings_definition *current_timings;
struct media_pad pad;
};
/*
* to_tvp7002 - Obtain device handler TVP7002
* @sd: ptr to v4l2_subdev struct
*
* Returns device handler tvp7002.
*/
static inline struct tvp7002 *to_tvp7002(struct v4l2_subdev *sd)
{
return container_of(sd, struct tvp7002, sd);
}
static inline struct v4l2_subdev *to_sd(struct v4l2_ctrl *ctrl)
{
return &container_of(ctrl->handler, struct tvp7002, hdl)->sd;
}
/*
* tvp7002_read - Read a value from a register in an TVP7002
* @sd: ptr to v4l2_subdev struct
* @addr: TVP7002 register address
* @dst: pointer to 8-bit destination
*
* Returns value read if successful, or non-zero (-1) otherwise.
*/
static int tvp7002_read(struct v4l2_subdev *sd, u8 addr, u8 *dst)
{
struct i2c_client *c = v4l2_get_subdevdata(sd);
int retry;
int error;
for (retry = 0; retry < I2C_RETRY_COUNT; retry++) {
error = i2c_smbus_read_byte_data(c, addr);
if (error >= 0) {
*dst = (u8)error;
return 0;
}
msleep_interruptible(10);
}
v4l2_err(sd, "TVP7002 read error %d\n", error);
return error;
}
/*
* tvp7002_read_err() - Read a register value with error code
* @sd: pointer to standard V4L2 sub-device structure
* @reg: destination register
* @val: value to be read
* @err: pointer to error value
*
* Read a value in a register and save error value in pointer.
* Also update the register table if successful
*/
static inline void tvp7002_read_err(struct v4l2_subdev *sd, u8 reg,
u8 *dst, int *err)
{
if (!*err)
*err = tvp7002_read(sd, reg, dst);
}
/*
* tvp7002_write() - Write a value to a register in TVP7002
* @sd: ptr to v4l2_subdev struct
* @addr: TVP7002 register address
* @value: value to be written to the register
*
* Write a value to a register in an TVP7002 decoder device.
* Returns zero if successful, or non-zero otherwise.
*/
static int tvp7002_write(struct v4l2_subdev *sd, u8 addr, u8 value)
{
struct i2c_client *c;
int retry;
int error;
c = v4l2_get_subdevdata(sd);
for (retry = 0; retry < I2C_RETRY_COUNT; retry++) {
error = i2c_smbus_write_byte_data(c, addr, value);
if (error >= 0)
return 0;
v4l2_warn(sd, "Write: retry ... %d\n", retry);
msleep_interruptible(10);
}
v4l2_err(sd, "TVP7002 write error %d\n", error);
return error;
}
/*
* tvp7002_write_err() - Write a register value with error code
* @sd: pointer to standard V4L2 sub-device structure
* @reg: destination register
* @val: value to be written
* @err: pointer to error value
*
* Write a value in a register and save error value in pointer.
* Also update the register table if successful
*/
static inline void tvp7002_write_err(struct v4l2_subdev *sd, u8 reg,
u8 val, int *err)
{
if (!*err)
*err = tvp7002_write(sd, reg, val);
}
/*
* tvp7002_write_inittab() - Write initialization values
* @sd: ptr to v4l2_subdev struct
* @regs: ptr to i2c_reg_value struct
*
* Write initialization values.
* Returns zero or -EINVAL if read operation fails.
*/
static int tvp7002_write_inittab(struct v4l2_subdev *sd,
const struct i2c_reg_value *regs)
{
int error = 0;
/* Initialize the first (defined) registers */
while (TVP7002_EOR != regs->reg) {
if (TVP7002_WRITE == regs->type)
tvp7002_write_err(sd, regs->reg, regs->value, &error);
regs++;
}
return error;
}
static int tvp7002_s_dv_timings(struct v4l2_subdev *sd,
struct v4l2_dv_timings *dv_timings)
{
struct tvp7002 *device = to_tvp7002(sd);
const struct v4l2_bt_timings *bt = &dv_timings->bt;
int i;
if (dv_timings->type != V4L2_DV_BT_656_1120)
return -EINVAL;
for (i = 0; i < NUM_TIMINGS; i++) {
const struct v4l2_bt_timings *t = &tvp7002_timings[i].timings.bt;
if (!memcmp(bt, t, &bt->standards - &bt->width)) {
device->current_timings = &tvp7002_timings[i];
return tvp7002_write_inittab(sd, tvp7002_timings[i].p_settings);
}
}
return -EINVAL;
}
static int tvp7002_g_dv_timings(struct v4l2_subdev *sd,
struct v4l2_dv_timings *dv_timings)
{
struct tvp7002 *device = to_tvp7002(sd);
*dv_timings = device->current_timings->timings;
return 0;
}
/*
* tvp7002_s_ctrl() - Set a control
* @ctrl: ptr to v4l2_ctrl struct
*
* Set a control in TVP7002 decoder device.
* Returns zero when successful or -EINVAL if register access fails.
*/
static int tvp7002_s_ctrl(struct v4l2_ctrl *ctrl)
{
struct v4l2_subdev *sd = to_sd(ctrl);
int error = 0;
switch (ctrl->id) {
case V4L2_CID_GAIN:
tvp7002_write_err(sd, TVP7002_R_FINE_GAIN, ctrl->val, &error);
tvp7002_write_err(sd, TVP7002_G_FINE_GAIN, ctrl->val, &error);
tvp7002_write_err(sd, TVP7002_B_FINE_GAIN, ctrl->val, &error);
return error;
}
return -EINVAL;
}
/*
* tvp7002_query_dv() - query DV timings
* @sd: pointer to standard V4L2 sub-device structure
* @index: index into the tvp7002_timings array
*
* Returns the current DV timings detected by TVP7002. If no active input is
* detected, returns -EINVAL
*/
static int tvp7002_query_dv(struct v4l2_subdev *sd, int *index)
{
const struct tvp7002_timings_definition *timings = tvp7002_timings;
u8 progressive;
u32 lpfr;
u32 cpln;
int error = 0;
u8 lpf_lsb;
u8 lpf_msb;
u8 cpl_lsb;
u8 cpl_msb;
/* Return invalid index if no active input is detected */
*index = NUM_TIMINGS;
/* Read standards from device registers */
tvp7002_read_err(sd, TVP7002_L_FRAME_STAT_LSBS, &lpf_lsb, &error);
tvp7002_read_err(sd, TVP7002_L_FRAME_STAT_MSBS, &lpf_msb, &error);
if (error < 0)
return error;
tvp7002_read_err(sd, TVP7002_CLK_L_STAT_LSBS, &cpl_lsb, &error);
tvp7002_read_err(sd, TVP7002_CLK_L_STAT_MSBS, &cpl_msb, &error);
if (error < 0)
return error;
/* Get lines per frame, clocks per line and interlaced/progresive */
lpfr = lpf_lsb | ((TVP7002_CL_MASK & lpf_msb) << TVP7002_CL_SHIFT);
cpln = cpl_lsb | ((TVP7002_CL_MASK & cpl_msb) << TVP7002_CL_SHIFT);
progressive = (lpf_msb & TVP7002_INPR_MASK) >> TVP7002_IP_SHIFT;
/* Do checking of video modes */
for (*index = 0; *index < NUM_TIMINGS; (*index)++, timings++)
if (lpfr == timings->lines_per_frame &&
progressive == timings->progressive) {
if (timings->cpl_min == 0xffff)
break;
if (cpln >= timings->cpl_min && cpln <= timings->cpl_max)
break;
}
if (*index == NUM_TIMINGS) {
v4l2_dbg(1, debug, sd, "detection failed: lpf = %x, cpl = %x\n",
lpfr, cpln);
return -ENOLINK;
}
/* Update lines per frame and clocks per line info */
v4l2_dbg(1, debug, sd, "detected timings: %d\n", *index);
return 0;
}
static int tvp7002_query_dv_timings(struct v4l2_subdev *sd,
struct v4l2_dv_timings *timings)
{
int index;
int err = tvp7002_query_dv(sd, &index);
if (err)
return err;
*timings = tvp7002_timings[index].timings;
return 0;
}
#ifdef CONFIG_VIDEO_ADV_DEBUG
/*
* tvp7002_g_register() - Get the value of a register
* @sd: ptr to v4l2_subdev struct
* @reg: ptr to v4l2_dbg_register struct
*
* Get the value of a TVP7002 decoder device register.
* Returns zero when successful, -EINVAL if register read fails or
* access to I2C client fails.
*/
static int tvp7002_g_register(struct v4l2_subdev *sd,
struct v4l2_dbg_register *reg)
{
u8 val;
int ret;
ret = tvp7002_read(sd, reg->reg & 0xff, &val);
reg->val = val;
reg->size = 1;
return ret;
}
/*
* tvp7002_s_register() - set a control
* @sd: ptr to v4l2_subdev struct
* @reg: ptr to v4l2_dbg_register struct
*
* Get the value of a TVP7002 decoder device register.
* Returns zero when successful, -EINVAL if register read fails.
*/
static int tvp7002_s_register(struct v4l2_subdev *sd,
const struct v4l2_dbg_register *reg)
{
return tvp7002_write(sd, reg->reg & 0xff, reg->val & 0xff);
}
#endif
/*
* tvp7002_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 tvp7002_s_stream(struct v4l2_subdev *sd, int enable)
{
struct tvp7002 *device = to_tvp7002(sd);
int error;
if (device->streaming == enable)
return 0;
/* low impedance: on, high impedance: off */
error = tvp7002_write(sd, TVP7002_MISC_CTL_2, enable ? 0x00 : 0x03);
if (error) {
v4l2_dbg(1, debug, sd, "Fail to set streaming\n");
return error;
}
device->streaming = enable;
return 0;
}
/*
* tvp7002_log_status() - Print information about register settings
* @sd: ptr to v4l2_subdev struct
*
* Log register values of a TVP7002 decoder device.
* Returns zero or -EINVAL if read operation fails.
*/
static int tvp7002_log_status(struct v4l2_subdev *sd)
{
struct tvp7002 *device = to_tvp7002(sd);
const struct v4l2_bt_timings *bt;
int detected;
/* Find my current timings */
tvp7002_query_dv(sd, &detected);
bt = &device->current_timings->timings.bt;
v4l2_info(sd, "Selected DV Timings: %ux%u\n", bt->width, bt->height);
if (detected == NUM_TIMINGS) {
v4l2_info(sd, "Detected DV Timings: None\n");
} else {
bt = &tvp7002_timings[detected].timings.bt;
v4l2_info(sd, "Detected DV Timings: %ux%u\n",
bt->width, bt->height);
}
v4l2_info(sd, "Streaming enabled: %s\n",
device->streaming ? "yes" : "no");
/* Print the current value of the gain control */
v4l2_ctrl_handler_log_status(&device->hdl, sd->name);
return 0;
}
static int tvp7002_enum_dv_timings(struct v4l2_subdev *sd,
struct v4l2_enum_dv_timings *timings)
{
if (timings->pad != 0)
return -EINVAL;
/* Check requested format index is within range */
if (timings->index >= NUM_TIMINGS)
return -EINVAL;
timings->timings = tvp7002_timings[timings->index].timings;
return 0;
}
static const struct v4l2_ctrl_ops tvp7002_ctrl_ops = {
.s_ctrl = tvp7002_s_ctrl,
};
/*
* tvp7002_enum_mbus_code() - Enum supported digital video format on pad
* @sd: pointer to standard V4L2 sub-device structure
* @cfg: pad configuration
* @code: pointer to subdev enum mbus code struct
*
* Enumerate supported digital video formats for pad.
*/
static int
tvp7002_enum_mbus_code(struct v4l2_subdev *sd, struct v4l2_subdev_pad_config *cfg,
struct v4l2_subdev_mbus_code_enum *code)
{
/* Check requested format index is within range */
if (code->index != 0)
return -EINVAL;
code->code = MEDIA_BUS_FMT_YUYV10_1X20;
return 0;
}
/*
* tvp7002_get_pad_format() - get video format on pad
* @sd: pointer to standard V4L2 sub-device structure
* @cfg: pad configuration
* @fmt: pointer to subdev format struct
*
* get video format for pad.
*/
static int
tvp7002_get_pad_format(struct v4l2_subdev *sd, struct v4l2_subdev_pad_config *cfg,
struct v4l2_subdev_format *fmt)
{
struct tvp7002 *tvp7002 = to_tvp7002(sd);
fmt->format.code = MEDIA_BUS_FMT_YUYV10_1X20;
fmt->format.width = tvp7002->current_timings->timings.bt.width;
fmt->format.height = tvp7002->current_timings->timings.bt.height;
fmt->format.field = tvp7002->current_timings->scanmode;
fmt->format.colorspace = tvp7002->current_timings->color_space;
return 0;
}
/*
* tvp7002_set_pad_format() - set video format on pad
* @sd: pointer to standard V4L2 sub-device structure
* @cfg: pad configuration
* @fmt: pointer to subdev format struct
*
* set video format for pad.
*/
static int
tvp7002_set_pad_format(struct v4l2_subdev *sd, struct v4l2_subdev_pad_config *cfg,
struct v4l2_subdev_format *fmt)
{
return tvp7002_get_pad_format(sd, cfg, fmt);
}
/* V4L2 core operation handlers */
static const struct v4l2_subdev_core_ops tvp7002_core_ops = {
.log_status = tvp7002_log_status,
#ifdef CONFIG_VIDEO_ADV_DEBUG
.g_register = tvp7002_g_register,
.s_register = tvp7002_s_register,
#endif
};
/* Specific video subsystem operation handlers */
static const struct v4l2_subdev_video_ops tvp7002_video_ops = {
.g_dv_timings = tvp7002_g_dv_timings,
.s_dv_timings = tvp7002_s_dv_timings,
.query_dv_timings = tvp7002_query_dv_timings,
.s_stream = tvp7002_s_stream,
};
/* media pad related operation handlers */
static const struct v4l2_subdev_pad_ops tvp7002_pad_ops = {
.enum_mbus_code = tvp7002_enum_mbus_code,
.get_fmt = tvp7002_get_pad_format,
.set_fmt = tvp7002_set_pad_format,
.enum_dv_timings = tvp7002_enum_dv_timings,
};
/* V4L2 top level operation handlers */
static const struct v4l2_subdev_ops tvp7002_ops = {
.core = &tvp7002_core_ops,
.video = &tvp7002_video_ops,
.pad = &tvp7002_pad_ops,
};
static struct tvp7002_config *
tvp7002_get_pdata(struct i2c_client *client)
{
struct v4l2_fwnode_endpoint bus_cfg = { .bus_type = 0 };
struct tvp7002_config *pdata = NULL;
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;
if (flags & V4L2_MBUS_FIELD_EVEN_HIGH)
pdata->fid_polarity = 1;
if (flags & V4L2_MBUS_VIDEO_SOG_ACTIVE_HIGH)
pdata->sog_polarity = 1;
done:
of_node_put(endpoint);
return pdata;
}
/*
* tvp7002_probe - Probe a TVP7002 device
* @c: ptr to i2c_client struct
* @id: ptr to i2c_device_id struct
*
* Initialize the TVP7002 device
* Returns zero when successful, -EINVAL if register read fails or
* -EIO if i2c access is not available.
*/
static int tvp7002_probe(struct i2c_client *c, const struct i2c_device_id *id)
{
struct tvp7002_config *pdata = tvp7002_get_pdata(c);
struct v4l2_subdev *sd;
struct tvp7002 *device;
struct v4l2_dv_timings timings;
int polarity_a;
int polarity_b;
u8 revision;
int error;
if (pdata == NULL) {
dev_err(&c->dev, "No platform data\n");
return -EINVAL;
}
/* Check if the adapter supports the needed features */
if (!i2c_check_functionality(c->adapter,
I2C_FUNC_SMBUS_READ_BYTE | I2C_FUNC_SMBUS_WRITE_BYTE_DATA))
return -EIO;
device = devm_kzalloc(&c->dev, sizeof(struct tvp7002), GFP_KERNEL);
if (!device)
return -ENOMEM;
sd = &device->sd;
device->pdata = pdata;
device->current_timings = tvp7002_timings;
/* Tell v4l2 the device is ready */
v4l2_i2c_subdev_init(sd, c, &tvp7002_ops);
v4l_info(c, "tvp7002 found @ 0x%02x (%s)\n",
c->addr, c->adapter->name);
error = tvp7002_read(sd, TVP7002_CHIP_REV, &revision);
if (error < 0)
return error;
/* Get revision number */
v4l2_info(sd, "Rev. %02x detected.\n", revision);
if (revision != 0x02)
v4l2_info(sd, "Unknown revision detected.\n");
/* Initializes TVP7002 to its default values */
error = tvp7002_write_inittab(sd, tvp7002_init_default);
if (error < 0)
return error;
/* Set polarity information after registers have been set */
polarity_a = 0x20 | device->pdata->hs_polarity << 5
| device->pdata->vs_polarity << 2;
error = tvp7002_write(sd, TVP7002_SYNC_CTL_1, polarity_a);
if (error < 0)
return error;
polarity_b = 0x01 | device->pdata->fid_polarity << 2
| device->pdata->sog_polarity << 1
| device->pdata->clk_polarity;
error = tvp7002_write(sd, TVP7002_MISC_CTL_3, polarity_b);
if (error < 0)
return error;
/* Set registers according to default video mode */
timings = device->current_timings->timings;
error = tvp7002_s_dv_timings(sd, &timings);
#if defined(CONFIG_MEDIA_CONTROLLER)
device->pad.flags = MEDIA_PAD_FL_SOURCE;
device->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
device->sd.entity.function = MEDIA_ENT_F_ATV_DECODER;
error = media_entity_pads_init(&device->sd.entity, 1, &device->pad);
if (error < 0)
return error;
#endif
v4l2_ctrl_handler_init(&device->hdl, 1);
v4l2_ctrl_new_std(&device->hdl, &tvp7002_ctrl_ops,
V4L2_CID_GAIN, 0, 255, 1, 0);
sd->ctrl_handler = &device->hdl;
if (device->hdl.error) {
error = device->hdl.error;
goto error;
}
v4l2_ctrl_handler_setup(&device->hdl);
error = v4l2_async_register_subdev(&device->sd);
if (error)
goto error;
return 0;
error:
v4l2_ctrl_handler_free(&device->hdl);
#if defined(CONFIG_MEDIA_CONTROLLER)
media_entity_cleanup(&device->sd.entity);
#endif
return error;
}
/*
* tvp7002_remove - Remove TVP7002 device support
* @c: ptr to i2c_client struct
*
* Reset the TVP7002 device
* Returns zero.
*/
static int tvp7002_remove(struct i2c_client *c)
{
struct v4l2_subdev *sd = i2c_get_clientdata(c);
struct tvp7002 *device = to_tvp7002(sd);
v4l2_dbg(1, debug, sd, "Removing tvp7002 adapter"
"on address 0x%x\n", c->addr);
v4l2_async_unregister_subdev(&device->sd);
#if defined(CONFIG_MEDIA_CONTROLLER)
media_entity_cleanup(&device->sd.entity);
#endif
v4l2_ctrl_handler_free(&device->hdl);
return 0;
}
/* I2C Device ID table */
static const struct i2c_device_id tvp7002_id[] = {
{ "tvp7002", 0 },
{ }
};
MODULE_DEVICE_TABLE(i2c, tvp7002_id);
#if IS_ENABLED(CONFIG_OF)
static const struct of_device_id tvp7002_of_match[] = {
{ .compatible = "ti,tvp7002", },
{ /* sentinel */ },
};
MODULE_DEVICE_TABLE(of, tvp7002_of_match);
#endif
/* I2C driver data */
static struct i2c_driver tvp7002_driver = {
.driver = {
.of_match_table = of_match_ptr(tvp7002_of_match),
.name = TVP7002_MODULE_NAME,
},
.probe = tvp7002_probe,
.remove = tvp7002_remove,
.id_table = tvp7002_id,
};
module_i2c_driver(tvp7002_driver);
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