by Hans Verkuil

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Subject: Re: [PATCH v7 4/6] media: i2c: Add TDA1997x HDMI receiver driver

On 01/31/18 05:36, Tim Harvey wrote:
> Add support for the TDA1997x HDMI receivers.
>
> Cc: Hans Verkuil <[email protected]>
> Signed-off-by: Tim Harvey <[email protected]>
> ---
> v7:
> - fix interlaced mode
> - support no AVI infoframe (ie DVI) (Hans)
> - add support for multiple output formats (Hans)
>
> v6:
> - fix return on regulator enablei in tda1997x_set_power()
> - replace copyright with SPDX tag
> - fix colorspace handling
>
> v5:
> - uppercase string constants
> - use v4l2_hdmi_rx_coloriemtry to fill format
> - fix V4L2_CID_DV_RX_RGB_RANGE
> - fix interlaced mode format
>
> v4:
> - move include/dt-bindings/media/tda1997x.h to bindings patch
> - fix typos
> - fix default quant range for VGA
> - fix quant range handling and conv matrix
> - add additional standards and capabilities to timings_cap
>
> v3:
> - use V4L2_DV_BT_FRAME_WIDTH/HEIGHT macros
> - fixed missing break
> - use only hdmi_infoframe_log for infoframe logging
> - simplify tda1997x_s_stream error handling
> - add delayed work proc to handle hotplug enable/disable
> - fix set_edid (disable HPD before writing, enable after)
> - remove enabling edid by default
> - initialize timings
> - take quant range into account in colorspace conversion
> - remove vendor/product tracking (we provide this in log_status via infoframes)
> - add v4l_controls
> - add more detail to log_status
> - calculate vhref generator timings
> - timing detection fixes (rounding errors, hswidth errors)
> - rename configure_input/configure_conv functions
>
> v2:
> - implement dv timings enum/cap
> - remove deprecated g_mbus_config op
> - fix dv_query_timings
> - add EDID get/set handling
> - remove max-pixel-rate support
> - add audio codec DAI support
> - change audio bindings
> ---
> drivers/media/i2c/Kconfig | 9 +
> drivers/media/i2c/Makefile | 1 +
> drivers/media/i2c/tda1997x.c | 3501 ++++++++++++++++++++++++++++++++++++++++++
> include/media/i2c/tda1997x.h | 42 +
> 4 files changed, 3553 insertions(+)
> create mode 100644 drivers/media/i2c/tda1997x.c
> create mode 100644 include/media/i2c/tda1997x.h
>
> diff --git a/drivers/media/i2c/Kconfig b/drivers/media/i2c/Kconfig
> index 3c6d642..abf24b9 100644
> --- a/drivers/media/i2c/Kconfig
> +++ b/drivers/media/i2c/Kconfig
> @@ -56,6 +56,15 @@ config VIDEO_TDA9840
> To compile this driver as a module, choose M here: the
> module will be called tda9840.
>
> +config VIDEO_TDA1997X
> + tristate "NXP TDA1997x HDMI receiver"
> + depends on VIDEO_V4L2 && I2C && VIDEO_V4L2_SUBDEV_API
> + ---help---
> + V4L2 subdevice driver for the NXP TDA1997x HDMI receivers.
> +
> + To compile this driver as a module, choose M here: the
> + module will be called tda1997x.
> +
> config VIDEO_TEA6415C
> tristate "Philips TEA6415C audio processor"
> depends on I2C
> diff --git a/drivers/media/i2c/Makefile b/drivers/media/i2c/Makefile
> index 548a9ef..adfcae9 100644
> --- a/drivers/media/i2c/Makefile
> +++ b/drivers/media/i2c/Makefile
> @@ -13,6 +13,7 @@ obj-$(CONFIG_VIDEO_TVAUDIO) += tvaudio.o
> obj-$(CONFIG_VIDEO_TDA7432) += tda7432.o
> obj-$(CONFIG_VIDEO_SAA6588) += saa6588.o
> obj-$(CONFIG_VIDEO_TDA9840) += tda9840.o
> +obj-$(CONFIG_VIDEO_TDA1997X) += tda1997x.o
> obj-$(CONFIG_VIDEO_TEA6415C) += tea6415c.o
> obj-$(CONFIG_VIDEO_TEA6420) += tea6420.o
> obj-$(CONFIG_VIDEO_SAA7110) += saa7110.o
> diff --git a/drivers/media/i2c/tda1997x.c b/drivers/media/i2c/tda1997x.c
> new file mode 100644
> index 0000000..f3720c1
> --- /dev/null
> +++ b/drivers/media/i2c/tda1997x.c
> @@ -0,0 +1,3501 @@
> +// SPDX-License-Identifier: GPL-2.0
> +/*
> + * Copyright (C) 2017 Gateworks Corporation
> + */
> +#include <linux/delay.h>
> +#include <linux/hdmi.h>
> +#include <linux/i2c.h>
> +#include <linux/init.h>
> +#include <linux/interrupt.h>
> +#include <linux/kernel.h>
> +#include <linux/module.h>
> +#include <linux/of_graph.h>
> +#include <linux/platform_device.h>
> +#include <linux/regulator/consumer.h>
> +#include <linux/types.h>
> +#include <linux/v4l2-dv-timings.h>
> +#include <linux/videodev2.h>
> +
> +#include <media/v4l2-ctrls.h>
> +#include <media/v4l2-device.h>
> +#include <media/v4l2-dv-timings.h>
> +#include <media/v4l2-event.h>
> +#include <media/v4l2-fwnode.h>
> +#include <media/i2c/tda1997x.h>
> +
> +#include <sound/core.h>
> +#include <sound/pcm.h>
> +#include <sound/pcm_params.h>
> +#include <sound/soc.h>
> +
> +#include <dt-bindings/media/tda1997x.h>
> +
> +/* debug level */
> +static int debug;
> +module_param(debug, int, 0644);
> +MODULE_PARM_DESC(debug, "debug level (0-2)");
> +
> +/* Page 0x00 - General Control */
> +#define REG_VERSION 0x0000
> +#define REG_INPUT_SEL 0x0001
> +#define REG_SVC_MODE 0x0002
> +#define REG_HPD_MAN_CTRL 0x0003
> +#define REG_RT_MAN_CTRL 0x0004
> +#define REG_STANDBY_SOFT_RST 0x000A
> +#define REG_HDMI_SOFT_RST 0x000B
> +#define REG_HDMI_INFO_RST 0x000C
> +#define REG_INT_FLG_CLR_TOP 0x000E
> +#define REG_INT_FLG_CLR_SUS 0x000F
> +#define REG_INT_FLG_CLR_DDC 0x0010
> +#define REG_INT_FLG_CLR_RATE 0x0011
> +#define REG_INT_FLG_CLR_MODE 0x0012
> +#define REG_INT_FLG_CLR_INFO 0x0013
> +#define REG_INT_FLG_CLR_AUDIO 0x0014
> +#define REG_INT_FLG_CLR_HDCP 0x0015
> +#define REG_INT_FLG_CLR_AFE 0x0016
> +#define REG_INT_MASK_TOP 0x0017
> +#define REG_INT_MASK_SUS 0x0018
> +#define REG_INT_MASK_DDC 0x0019
> +#define REG_INT_MASK_RATE 0x001A
> +#define REG_INT_MASK_MODE 0x001B
> +#define REG_INT_MASK_INFO 0x001C
> +#define REG_INT_MASK_AUDIO 0x001D
> +#define REG_INT_MASK_HDCP 0x001E
> +#define REG_INT_MASK_AFE 0x001F
> +#define REG_DETECT_5V 0x0020
> +#define REG_SUS_STATUS 0x0021
> +#define REG_V_PER 0x0022
> +#define REG_H_PER 0x0025
> +#define REG_HS_WIDTH 0x0027
> +#define REG_FMT_H_TOT 0x0029
> +#define REG_FMT_H_ACT 0x002b
> +#define REG_FMT_H_FRONT 0x002d
> +#define REG_FMT_H_SYNC 0x002f
> +#define REG_FMT_H_BACK 0x0031
> +#define REG_FMT_V_TOT 0x0033
> +#define REG_FMT_V_ACT 0x0035
> +#define REG_FMT_V_FRONT_F1 0x0037
> +#define REG_FMT_V_FRONT_F2 0x0038
> +#define REG_FMT_V_SYNC 0x0039
> +#define REG_FMT_V_BACK_F1 0x003a
> +#define REG_FMT_V_BACK_F2 0x003b
> +#define REG_FMT_DE_ACT 0x003c
> +#define REG_RATE_CTRL 0x0040
> +#define REG_CLK_MIN_RATE 0x0043
> +#define REG_CLK_MAX_RATE 0x0046
> +#define REG_CLK_A_STATUS 0x0049
> +#define REG_CLK_A_RATE 0x004A
> +#define REG_DRIFT_CLK_A_REG 0x004D
> +#define REG_CLK_B_STATUS 0x004E
> +#define REG_CLK_B_RATE 0x004F
> +#define REG_DRIFT_CLK_B_REG 0x0052
> +#define REG_HDCP_CTRL 0x0060
> +#define REG_HDCP_KDS 0x0061
> +#define REG_HDCP_BCAPS 0x0063
> +#define REG_HDCP_KEY_CTRL 0x0064
> +#define REG_INFO_CTRL 0x0076
> +#define REG_INFO_EXCEED 0x0077
> +#define REG_PIX_REPEAT 0x007B
> +#define REG_AUDIO_PATH 0x007C
> +#define REG_AUDCFG 0x007D
> +#define REG_AUDIO_OUT_ENABLE 0x007E
> +#define REG_AUDIO_OUT_HIZ 0x007F
> +#define REG_VDP_CTRL 0x0080
> +#define REG_VDP_MATRIX 0x0081
> +#define REG_VHREF_CTRL 0x00A0
> +#define REG_PXCNT_PR 0x00A2
> +#define REG_PXCNT_NPIX 0x00A4
> +#define REG_LCNT_PR 0x00A6
> +#define REG_LCNT_NLIN 0x00A8
> +#define REG_HREF_S 0x00AA
> +#define REG_HREF_E 0x00AC
> +#define REG_HS_S 0x00AE
> +#define REG_HS_E 0x00B0
> +#define REG_VREF_F1_S 0x00B2
> +#define REG_VREF_F1_WIDTH 0x00B4
> +#define REG_VREF_F2_S 0x00B5
> +#define REG_VREF_F2_WIDTH 0x00B7
> +#define REG_VS_F1_LINE_S 0x00B8
> +#define REG_VS_F1_LINE_WIDTH 0x00BA
> +#define REG_VS_F2_LINE_S 0x00BB
> +#define REG_VS_F2_LINE_WIDTH 0x00BD
> +#define REG_VS_F1_PIX_S 0x00BE
> +#define REG_VS_F1_PIX_E 0x00C0
> +#define REG_VS_F2_PIX_S 0x00C2
> +#define REG_VS_F2_PIX_E 0x00C4
> +#define REG_FREF_F1_S 0x00C6
> +#define REG_FREF_F2_S 0x00C8
> +#define REG_FDW_S 0x00ca
> +#define REG_FDW_E 0x00cc
> +#define REG_BLK_GY 0x00da
> +#define REG_BLK_BU 0x00dc
> +#define REG_BLK_RV 0x00de
> +#define REG_FILTERS_CTRL 0x00e0
> +#define REG_DITHERING_CTRL 0x00E9
> +#define REG_OF 0x00EA
> +#define REG_PCLK 0x00EB
> +#define REG_HS_HREF 0x00EC
> +#define REG_VS_VREF 0x00ED
> +#define REG_DE_FREF 0x00EE
> +#define REG_VP35_32_CTRL 0x00EF
> +#define REG_VP31_28_CTRL 0x00F0
> +#define REG_VP27_24_CTRL 0x00F1
> +#define REG_VP23_20_CTRL 0x00F2
> +#define REG_VP19_16_CTRL 0x00F3
> +#define REG_VP15_12_CTRL 0x00F4
> +#define REG_VP11_08_CTRL 0x00F5
> +#define REG_VP07_04_CTRL 0x00F6
> +#define REG_VP03_00_CTRL 0x00F7
> +#define REG_CURPAGE_00H 0xFF
> +
> +#define MASK_VPER 0x3fffff
> +#define MASK_VHREF 0x3fff
> +#define MASK_HPER 0x0fff
> +#define MASK_HSWIDTH 0x03ff
> +
> +/* HPD Detection */
> +#define DETECT_UTIL BIT(7) /* utility of HDMI level */
> +#define DETECT_HPD BIT(6) /* HPD of HDMI level */
> +#define DETECT_5V_SEL BIT(2) /* 5V present on selected input */
> +#define DETECT_5V_B BIT(1) /* 5V present on input B */
> +#define DETECT_5V_A BIT(0) /* 5V present on input A */
> +
> +/* Input Select */
> +#define INPUT_SEL_RST_FMT BIT(7) /* 1=reset format measurement */
> +#define INPUT_SEL_RST_VDP BIT(2) /* 1=reset video data path */
> +#define INPUT_SEL_OUT_MODE BIT(1) /* 0=loop 1=bypass */
> +#define INPUT_SEL_B BIT(0) /* 0=inputA 1=inputB */
> +
> +/* Service Mode */
> +#define SVC_MODE_CLK2_MASK 0xc0
> +#define SVC_MODE_CLK2_SHIFT 6
> +#define SVC_MODE_CLK2_XTL 0L
> +#define SVC_MODE_CLK2_XTLDIV2 1L
> +#define SVC_MODE_CLK2_HDMIX2 3L
> +#define SVC_MODE_CLK1_MASK 0x30
> +#define SVC_MODE_CLK1_SHIFT 4
> +#define SVC_MODE_CLK1_XTAL 0L
> +#define SVC_MODE_CLK1_XTLDIV2 1L
> +#define SVC_MODE_CLK1_HDMI 3L
> +#define SVC_MODE_RAMP BIT(3) /* 0=colorbar 1=ramp */
> +#define SVC_MODE_PAL BIT(2) /* 0=NTSC(480i/p) 1=PAL(576i/p) */
> +#define SVC_MODE_INT_PROG BIT(1) /* 0=interlaced 1=progressive */
> +#define SVC_MODE_SM_ON BIT(0) /* Enable color bars and tone gen */
> +
> +/* HDP Manual Control */
> +#define HPD_MAN_CTRL_HPD_PULSE BIT(7) /* HPD Pulse low 110ms */
> +#define HPD_MAN_CTRL_5VEN BIT(2) /* Output 5V */
> +#define HPD_MAN_CTRL_HPD_B BIT(1) /* Assert HPD High for Input A */
> +#define HPD_MAN_CTRL_HPD_A BIT(0) /* Assert HPD High for Input A */
> +
> +/* RT_MAN_CTRL */
> +#define RT_MAN_CTRL_RT_AUTO BIT(7)
> +#define RT_MAN_CTRL_RT BIT(6)
> +#define RT_MAN_CTRL_RT_B BIT(1) /* enable TMDS pull-up on Input B */
> +#define RT_MAN_CTRL_RT_A BIT(0) /* enable TMDS pull-up on Input A */
> +
> +/* VDP_CTRL */
> +#define VDP_CTRL_COMPDEL_BP BIT(5) /* bypass compdel */
> +#define VDP_CTRL_FORMATTER_BP BIT(4) /* bypass formatter */
> +#define VDP_CTRL_PREFILTER_BP BIT(1) /* bypass prefilter */
> +#define VDP_CTRL_MATRIX_BP BIT(0) /* bypass matrix conversion */
> +
> +/* REG_VHREF_CTRL */
> +#define VHREF_INT_DET BIT(7) /* interlace detect: 1=alt 0=frame */
> +#define VHREF_VSYNC_MASK 0x60
> +#define VHREF_VSYNC_SHIFT 6
> +#define VHREF_VSYNC_AUTO 0L
> +#define VHREF_VSYNC_FDW 1L
> +#define VHREF_VSYNC_EVEN 2L
> +#define VHREF_VSYNC_ODD 3L
> +#define VHREF_STD_DET_MASK 0x18
> +#define VHREF_STD_DET_SHIFT 3
> +#define VHREF_STD_DET_PAL 0L
> +#define VHREF_STD_DET_NTSC 1L
> +#define VHREF_STD_DET_AUTO 2L
> +#define VHREF_STD_DET_OFF 3L
> +#define VHREF_VREF_SRC_STD BIT(2) /* 1=from standard 0=manual */
> +#define VHREF_HREF_SRC_STD BIT(1) /* 1=from standard 0=manual */
> +#define VHREF_HSYNC_SEL_HS BIT(0) /* 1=HS 0=VS */
> +
> +/* AUDIO_OUT_ENABLE */
> +#define AUDIO_OUT_ENABLE_ACLK BIT(5)
> +#define AUDIO_OUT_ENABLE_WS BIT(4)
> +#define AUDIO_OUT_ENABLE_AP3 BIT(3)
> +#define AUDIO_OUT_ENABLE_AP2 BIT(2)
> +#define AUDIO_OUT_ENABLE_AP1 BIT(1)
> +#define AUDIO_OUT_ENABLE_AP0 BIT(0)
> +
> +/* Prefilter Control */
> +#define FILTERS_CTRL_BU_MASK 0x0c
> +#define FILTERS_CTRL_BU_SHIFT 2
> +#define FILTERS_CTRL_RV_MASK 0x03
> +#define FILTERS_CTRL_RV_SHIFT 0
> +#define FILTERS_CTRL_OFF 0L /* off */
> +#define FILTERS_CTRL_2TAP 1L /* 2 Taps */
> +#define FILTERS_CTRL_7TAP 2L /* 7 Taps */
> +#define FILTERS_CTRL_2_7TAP 3L /* 2/7 Taps */
> +
> +/* PCLK Configuration */
> +#define PCLK_DELAY_MASK 0x70
> +#define PCLK_DELAY_SHIFT 4 /* Pixel delay (-8..+7) */
> +#define PCLK_INV_SHIFT 2
> +#define PCLK_SEL_MASK 0x03 /* clock scaler */
> +#define PCLK_SEL_SHIFT 0
> +#define PCLK_SEL_X1 0L
> +#define PCLK_SEL_X2 1L
> +#define PCLK_SEL_DIV2 2L
> +#define PCLK_SEL_DIV4 3L
> +
> +/* Pixel Repeater */
> +#define PIX_REPEAT_MASK_UP_SEL 0x30
> +#define PIX_REPEAT_MASK_REP 0x0f
> +#define PIX_REPEAT_SHIFT 4
> +#define PIX_REPEAT_CHROMA 1
> +
> +/* Page 0x01 - HDMI info and packets */
> +#define REG_HDMI_FLAGS 0x0100
> +#define REG_DEEP_COLOR_MODE 0x0101
> +#define REG_AUDIO_FLAGS 0x0108
> +#define REG_AUDIO_FREQ 0x0109
> +#define REG_ACP_PACKET_TYPE 0x0141
> +#define REG_ISRC1_PACKET_TYPE 0x0161
> +#define REG_ISRC2_PACKET_TYPE 0x0181
> +#define REG_GBD_PACKET_TYPE 0x01a1
> +
> +/* HDMI_FLAGS */
> +#define HDMI_FLAGS_AUDIO BIT(7) /* Audio packet in last videoframe */
> +#define HDMI_FLAGS_HDMI BIT(6) /* HDMI detected */
> +#define HDMI_FLAGS_EESS BIT(5) /* EESS detected */
> +#define HDMI_FLAGS_HDCP BIT(4) /* HDCP detected */
> +#define HDMI_FLAGS_AVMUTE BIT(3) /* AVMUTE */
> +#define HDMI_FLAGS_AUD_LAYOUT BIT(2) /* Layout status Audio sample packet */
> +#define HDMI_FLAGS_AUD_FIFO_OF BIT(1) /* FIFO read/write pointers crossed */
> +#define HDMI_FLAGS_AUD_FIFO_LOW BIT(0) /* FIFO read ptr within 2 of write */
> +
> +/* Page 0x12 - HDMI Extra control and debug */
> +#define REG_CLK_CFG 0x1200
> +#define REG_CLK_OUT_CFG 0x1201
> +#define REG_CFG1 0x1202
> +#define REG_CFG2 0x1203
> +#define REG_WDL_CFG 0x1210
> +#define REG_DELOCK_DELAY 0x1212
> +#define REG_PON_OVR_EN 0x12A0
> +#define REG_PON_CBIAS 0x12A1
> +#define REG_PON_RESCAL 0x12A2
> +#define REG_PON_RES 0x12A3
> +#define REG_PON_CLK 0x12A4
> +#define REG_PON_PLL 0x12A5
> +#define REG_PON_EQ 0x12A6
> +#define REG_PON_DES 0x12A7
> +#define REG_PON_OUT 0x12A8
> +#define REG_PON_MUX 0x12A9
> +#define REG_MODE_REC_CFG1 0x12F8
> +#define REG_MODE_REC_CFG2 0x12F9
> +#define REG_MODE_REC_STS 0x12FA
> +#define REG_AUDIO_LAYOUT 0x12D0
> +
> +#define PON_EN 1
> +#define PON_DIS 0
> +
> +/* CLK CFG */
> +#define CLK_CFG_INV_OUT_CLK BIT(7)
> +#define CLK_CFG_INV_BUS_CLK BIT(6)
> +#define CLK_CFG_SEL_ACLK_EN BIT(1)
> +#define CLK_CFG_SEL_ACLK BIT(0)
> +#define CLK_CFG_DIS 0
> +
> +/* Page 0x13 - HDMI Extra control and debug */
> +#define REG_DEEP_COLOR_CTRL 0x1300
> +#define REG_CGU_DBG_SEL 0x1305
> +#define REG_HDCP_DDC_ADDR 0x1310
> +#define REG_HDCP_KIDX 0x1316
> +#define REG_DEEP_PLL7_BYP 0x1347
> +#define REG_HDCP_DE_CTRL 0x1370
> +#define REG_HDCP_EP_FILT_CTRL 0x1371
> +#define REG_HDMI_CTRL 0x1377
> +#define REG_HMTP_CTRL 0x137a
> +#define REG_TIMER_D 0x13CF
> +#define REG_SUS_SET_RGB0 0x13E1
> +#define REG_SUS_SET_RGB1 0x13E2
> +#define REG_SUS_SET_RGB2 0x13E3
> +#define REG_SUS_SET_RGB3 0x13E4
> +#define REG_SUS_SET_RGB4 0x13E5
> +#define REG_MAN_SUS_HDMI_SEL 0x13E8
> +#define REG_MAN_HDMI_SET 0x13E9
> +#define REG_SUS_CLOCK_GOOD 0x13EF
> +
> +/* HDCP DE Control */
> +#define HDCP_DE_MODE_MASK 0xc0 /* DE Measurement mode */
> +#define HDCP_DE_MODE_SHIFT 6
> +#define HDCP_DE_REGEN_EN BIT(5) /* enable regen mode */
> +#define HDCP_DE_FILTER_MASK 0x18 /* DE filter sensitivity */
> +#define HDCP_DE_FILTER_SHIFT 3
> +#define HDCP_DE_COMP_MASK 0x07 /* DE Composition mode */
> +#define HDCP_DE_COMP_MIXED 6L
> +#define HDCP_DE_COMP_OR 5L
> +#define HDCP_DE_COMP_AND 4L
> +#define HDCP_DE_COMP_CH3 3L
> +#define HDCP_DE_COMP_CH2 2L
> +#define HDCP_DE_COMP_CH1 1L
> +#define HDCP_DE_COMP_CH0 0L
> +
> +/* HDCP EP Filter Control */
> +#define HDCP_EP_FIL_CTL_MASK 0x30
> +#define HDCP_EP_FIL_CTL_SHIFT 4
> +#define HDCP_EP_FIL_VS_MASK 0x0c
> +#define HDCP_EP_FIL_VS_SHIFT 2
> +#define HDCP_EP_FIL_HS_MASK 0x03
> +#define HDCP_EP_FIL_HS_SHIFT 0
> +
> +/* HDMI_CTRL */
> +#define HDMI_CTRL_MUTE_MASK 0x0c
> +#define HDMI_CTRL_MUTE_SHIFT 2
> +#define HDMI_CTRL_MUTE_AUTO 0L
> +#define HDMI_CTRL_MUTE_OFF 1L
> +#define HDMI_CTRL_MUTE_ON 2L
> +#define HDMI_CTRL_HDCP_MASK 0x03
> +#define HDMI_CTRL_HDCP_SHIFT 0
> +#define HDMI_CTRL_HDCP_EESS 2L
> +#define HDMI_CTRL_HDCP_OESS 1L
> +#define HDMI_CTRL_HDCP_AUTO 0L
> +
> +/* CGU_DBG_SEL bits */
> +#define CGU_DBG_CLK_SEL_MASK 0x18
> +#define CGU_DBG_CLK_SEL_SHIFT 3
> +#define CGU_DBG_XO_FRO_SEL BIT(2)
> +#define CGU_DBG_VDP_CLK_SEL BIT(1)
> +#define CGU_DBG_PIX_CLK_SEL BIT(0)
> +
> +/* REG_MAN_SUS_HDMI_SEL / REG_MAN_HDMI_SET bits */
> +#define MAN_DIS_OUT_BUF BIT(7)
> +#define MAN_DIS_ANA_PATH BIT(6)
> +#define MAN_DIS_HDCP BIT(5)
> +#define MAN_DIS_TMDS_ENC BIT(4)
> +#define MAN_DIS_TMDS_FLOW BIT(3)
> +#define MAN_RST_HDCP BIT(2)
> +#define MAN_RST_TMDS_ENC BIT(1)
> +#define MAN_RST_TMDS_FLOW BIT(0)
> +
> +/* Page 0x14 - Audio Extra control and debug */
> +#define REG_FIFO_LATENCY_VAL 0x1403
> +#define REG_AUDIO_CLOCK 0x1411
> +#define REG_TEST_NCTS_CTRL 0x1415
> +#define REG_TEST_AUDIO_FREQ 0x1426
> +#define REG_TEST_MODE 0x1437
> +
> +/* Audio Clock Configuration */
> +#define AUDIO_CLOCK_PLL_PD BIT(7) /* powerdown PLL */
> +#define AUDIO_CLOCK_SEL_MASK 0x7f
> +#define AUDIO_CLOCK_SEL_16FS 0L /* 16*fs */
> +#define AUDIO_CLOCK_SEL_32FS 1L /* 32*fs */
> +#define AUDIO_CLOCK_SEL_64FS 2L /* 64*fs */
> +#define AUDIO_CLOCK_SEL_128FS 3L /* 128*fs */
> +#define AUDIO_CLOCK_SEL_256FS 4L /* 256*fs */
> +#define AUDIO_CLOCK_SEL_512FS 5L /* 512*fs */
> +
> +/* Page 0x20: EDID and Hotplug Detect */
> +#define REG_EDID_IN_BYTE0 0x2000 /* EDID base */
> +#define REG_EDID_IN_VERSION 0x2080
> +#define REG_EDID_ENABLE 0x2081
> +#define REG_HPD_POWER 0x2084
> +#define REG_HPD_AUTO_CTRL 0x2085
> +#define REG_HPD_DURATION 0x2086
> +#define REG_RX_HPD_HEAC 0x2087
> +
> +/* EDID_ENABLE */
> +#define EDID_ENABLE_NACK_OFF BIT(7)
> +#define EDID_ENABLE_EDID_ONLY BIT(6)
> +#define EDID_ENABLE_B_EN BIT(1)
> +#define EDID_ENABLE_A_EN BIT(0)
> +
> +/* HPD Power */
> +#define HPD_POWER_BP_MASK 0x0c
> +#define HPD_POWER_BP_SHIFT 2
> +#define HPD_POWER_BP_LOW 0L
> +#define HPD_POWER_BP_HIGH 1L
> +#define HPD_POWER_EDID_ONLY BIT(1)
> +
> +/* HPD Auto control */
> +#define HPD_AUTO_READ_EDID BIT(7)
> +#define HPD_AUTO_HPD_F3TECH BIT(5)
> +#define HPD_AUTO_HP_OTHER BIT(4)
> +#define HPD_AUTO_HPD_UNSEL BIT(3)
> +#define HPD_AUTO_HPD_ALL_CH BIT(2)
> +#define HPD_AUTO_HPD_PRV_CH BIT(1)
> +#define HPD_AUTO_HPD_NEW_CH BIT(0)
> +
> +/* Page 0x21 - EDID content */
> +#define REG_EDID_IN_BYTE128 0x2100 /* CEA Extension block */
> +#define REG_EDID_IN_SPA_SUB 0x2180
> +#define REG_EDID_IN_SPA_AB_A 0x2181
> +#define REG_EDID_IN_SPA_CD_A 0x2182
> +#define REG_EDID_IN_CKSUM_A 0x2183
> +#define REG_EDID_IN_SPA_AB_B 0x2184
> +#define REG_EDID_IN_SPA_CD_B 0x2185
> +#define REG_EDID_IN_CKSUM_B 0x2186
> +
> +/* Page 0x30 - NV Configuration */
> +#define REG_RT_AUTO_CTRL 0x3000
> +#define REG_EQ_MAN_CTRL0 0x3001
> +#define REG_EQ_MAN_CTRL1 0x3002
> +#define REG_OUTPUT_CFG 0x3003
> +#define REG_MUTE_CTRL 0x3004
> +#define REG_SLAVE_ADDR 0x3005
> +#define REG_CMTP_REG6 0x3006
> +#define REG_CMTP_REG7 0x3007
> +#define REG_CMTP_REG8 0x3008
> +#define REG_CMTP_REG9 0x3009
> +#define REG_CMTP_REGA 0x300A
> +#define REG_CMTP_REGB 0x300B
> +#define REG_CMTP_REGC 0x300C
> +#define REG_CMTP_REGD 0x300D
> +#define REG_CMTP_REGE 0x300E
> +#define REG_CMTP_REGF 0x300F
> +#define REG_CMTP_REG10 0x3010
> +#define REG_CMTP_REG11 0x3011
> +
> +/* Page 0x80 - CEC */
> +#define REG_PWR_CONTROL 0x80F4
> +#define REG_OSC_DIVIDER 0x80F5
> +#define REG_EN_OSC_PERIOD_LSB 0x80F8
> +#define REG_CONTROL 0x80FF
> +
> +/* global interrupt flags (INT_FLG_CRL_TOP) */
> +#define INTERRUPT_AFE BIT(7) /* AFE module */
> +#define INTERRUPT_HDCP BIT(6) /* HDCP module */
> +#define INTERRUPT_AUDIO BIT(5) /* Audio module */
> +#define INTERRUPT_INFO BIT(4) /* Infoframe module */
> +#define INTERRUPT_MODE BIT(3) /* HDMI mode module */
> +#define INTERRUPT_RATE BIT(2) /* rate module */
> +#define INTERRUPT_DDC BIT(1) /* DDC module */
> +#define INTERRUPT_SUS BIT(0) /* SUS module */
> +
> +/* INT_FLG_CLR_HDCP bits */
> +#define MASK_HDCP_MTP BIT(7) /* HDCP MTP busy */
> +#define MASK_HDCP_DLMTP BIT(4) /* HDCP end download MTP to SRAM */
> +#define MASK_HDCP_DLRAM BIT(3) /* HDCP end download keys from SRAM */
> +#define MASK_HDCP_ENC BIT(2) /* HDCP ENC */
> +#define MASK_STATE_C5 BIT(1) /* HDCP State C5 reached */
> +#define MASK_AKSV BIT(0) /* AKSV received (start of auth) */
> +
> +/* INT_FLG_CLR_RATE bits */
> +#define MASK_RATE_B_DRIFT BIT(7) /* Rate measurement drifted */
> +#define MASK_RATE_B_ST BIT(6) /* Rate measurement stability change */
> +#define MASK_RATE_B_ACT BIT(5) /* Rate measurement activity change */
> +#define MASK_RATE_B_PST BIT(4) /* Rate measreument presence change */
> +#define MASK_RATE_A_DRIFT BIT(3) /* Rate measurement drifted */
> +#define MASK_RATE_A_ST BIT(2) /* Rate measurement stability change */
> +#define MASK_RATE_A_ACT BIT(1) /* Rate measurement presence change */
> +#define MASK_RATE_A_PST BIT(0) /* Rate measreument presence change */
> +
> +/* INT_FLG_CLR_SUS (Start Up Sequencer) bits */
> +#define MASK_MPT BIT(7) /* Config MTP end of process */
> +#define MASK_FMT BIT(5) /* Video format changed */
> +#define MASK_RT_PULSE BIT(4) /* End of termination resistance pulse */
> +#define MASK_SUS_END BIT(3) /* SUS last state reached */
> +#define MASK_SUS_ACT BIT(2) /* Activity of selected input changed */
> +#define MASK_SUS_CH BIT(1) /* Selected input changed */
> +#define MASK_SUS_ST BIT(0) /* SUS state changed */
> +
> +/* INT_FLG_CLR_DDC bits */
> +#define MASK_EDID_MTP BIT(7) /* EDID MTP end of process */
> +#define MASK_DDC_ERR BIT(6) /* master DDC error */
> +#define MASK_DDC_CMD_DONE BIT(5) /* master DDC cmd send correct */
> +#define MASK_READ_DONE BIT(4) /* End of down EDID read */
> +#define MASK_RX_DDC_SW BIT(3) /* Output DDC switching finished */
> +#define MASK_HDCP_DDC_SW BIT(2) /* HDCP DDC switching finished */
> +#define MASK_HDP_PULSE_END BIT(1) /* End of Hot Plug Detect pulse */
> +#define MASK_DET_5V BIT(0) /* Detection of +5V */
> +
> +/* INT_FLG_CLR_MODE bits */
> +#define MASK_HDMI_FLG BIT(7) /* HDMI mode/avmute/encrypt/FIFO fail */
> +#define MASK_GAMUT BIT(6) /* Gamut packet */
> +#define MASK_ISRC2 BIT(5) /* ISRC2 packet */
> +#define MASK_ISRC1 BIT(4) /* ISRC1 packet */
> +#define MASK_ACP BIT(3) /* Audio Content Protection packet */
> +#define MASK_DC_NO_GCP BIT(2) /* GCP not received in 5 frames */
> +#define MASK_DC_PHASE BIT(1) /* deepcolor pixel phase needs update */
> +#define MASK_DC_MODE BIT(0) /* deepcolor color depth changed */
> +
> +/* INT_FLG_CLR_INFO bits (Infoframe Change Status) */
> +#define MASK_MPS_IF BIT(6) /* MPEG Source Product */
> +#define MASK_AUD_IF BIT(5) /* Audio */
> +#define MASK_SPD_IF BIT(4) /* Source Product Descriptor */
> +#define MASK_AVI_IF BIT(3) /* Auxiliary Video IF */
> +#define MASK_VS_IF_OTHER_BK2 BIT(2) /* Vendor Specific (bank2) */
> +#define MASK_VS_IF_OTHER_BK1 BIT(1) /* Vendor Specific (bank1) */
> +#define MASK_VS_IF_HDMI BIT(0) /* Vendor Specific (w/ HDMI LLC code) */
> +
> +/* INT_FLG_CLR_AUDIO bits */
> +#define MASK_AUDIO_FREQ_FLG BIT(5) /* Audio freq change */
> +#define MASK_AUDIO_FLG BIT(4) /* DST, OBA, HBR, ASP change */
> +#define MASK_MUTE_FLG BIT(3) /* Audio Mute */
> +#define MASK_CH_STATE BIT(2) /* Channel status */
> +#define MASK_UNMUTE_FIFO BIT(1) /* Audio Unmute */
> +#define MASK_ERROR_FIFO_PT BIT(0) /* Audio FIFO pointer error */
> +
> +/* INT_FLG_CLR_AFE bits */
> +#define MASK_AFE_WDL_UNLOCKED BIT(7) /* Wordlocker was unlocked */
> +#define MASK_AFE_GAIN_DONE BIT(6) /* Gain calibration done */
> +#define MASK_AFE_OFFSET_DONE BIT(5) /* Offset calibration done */
> +#define MASK_AFE_ACTIVITY_DET BIT(4) /* Activity detected on data */
> +#define MASK_AFE_PLL_LOCK BIT(3) /* TMDS PLL is locked */
> +#define MASK_AFE_TRMCAL_DONE BIT(2) /* Termination calibration done */
> +#define MASK_AFE_ASU_STATE BIT(1) /* ASU state is reached */
> +#define MASK_AFE_ASU_READY BIT(0) /* AFE calibration done: TMDS ready */
> +
> +/* Audio Output */
> +#define AUDCFG_CLK_INVERT BIT(7) /* invert A_CLK polarity */
> +#define AUDCFG_TEST_TONE BIT(6) /* enable test tone generator */
> +#define AUDCFG_BUS_SHIFT 5
> +#define AUDCFG_BUS_I2S 0L
> +#define AUDCFG_BUS_SPDIF 1L
> +#define AUDCFG_I2SW_SHIFT 4
> +#define AUDCFG_I2SW_16 0L
> +#define AUDCFG_I2SW_32 1L
> +#define AUDCFG_AUTO_MUTE_EN BIT(3) /* Enable Automatic audio mute */
> +#define AUDCFG_HBR_SHIFT 2
> +#define AUDCFG_HBR_STRAIGHT 0L /* straight via AP0 */
> +#define AUDCFG_HBR_DEMUX 1L /* demuxed via AP0:AP3 */
> +#define AUDCFG_TYPE_MASK 0x03
> +#define AUDCFG_TYPE_SHIFT 0
> +#define AUDCFG_TYPE_DST 3L /* Direct Stream Transfer (DST) */
> +#define AUDCFG_TYPE_OBA 2L /* One Bit Audio (OBA) */
> +#define AUDCFG_TYPE_HBR 1L /* High Bit Rate (HBR) */
> +#define AUDCFG_TYPE_PCM 0L /* Audio samples */
> +
> +/* Video Formatter */
> +#define OF_VP_ENABLE BIT(7) /* VP[35:0]/HS/VS/DE/CLK */
> +#define OF_BLK BIT(4) /* blanking codes */
> +#define OF_TRC BIT(3) /* timing codes (SAV/EAV) */
> +#define OF_FMT_MASK 0x3
> +#define OF_FMT_444 0L /* RGB444/YUV444 */
> +#define OF_FMT_422_SMPT 1L /* YUV422 semi-planar */
> +#define OF_FMT_422_CCIR 2L /* YUV422 CCIR656 */
> +
> +/* HS/HREF output control */
> +#define HS_HREF_DELAY_MASK 0xf0
> +#define HS_HREF_DELAY_SHIFT 4 /* Pixel delay (-8..+7) */
> +#define HS_HREF_PXQ_SHIFT 3 /* Timing codes from HREF */
> +#define HS_HREF_INV_SHIFT 2 /* polarity (1=invert) */
> +#define HS_HREF_SEL_MASK 0x03
> +#define HS_HREF_SEL_SHIFT 0
> +#define HS_HREF_SEL_HS_VHREF 0L /* HS from VHREF */
> +#define HS_HREF_SEL_HREF_VHREF 1L /* HREF from VHREF */
> +#define HS_HREF_SEL_HREF_HDMI 2L /* HREF from HDMI */
> +#define HS_HREF_SEL_NONE 3L /* not generated */
> +
> +/* VS output control */
> +#define VS_VREF_DELAY_MASK 0xf0
> +#define VS_VREF_DELAY_SHIFT 4 /* Pixel delay (-8..+7) */
> +#define VS_VREF_INV_SHIFT 2 /* polarity (1=invert) */
> +#define VS_VREF_SEL_MASK 0x03
> +#define VS_VREF_SEL_SHIFT 0
> +#define VS_VREF_SEL_VS_VHREF 0L /* VS from VHREF */
> +#define VS_VREF_SEL_VREF_VHREF 1L /* VREF from VHREF */
> +#define VS_VREF_SEL_VREF_HDMI 2L /* VREF from HDMI */
> +#define VS_VREF_SEL_NONE 3L /* not generated */
> +
> +/* DE/FREF output control */
> +#define DE_FREF_DELAY_MASK 0xf0
> +#define DE_FREF_DELAY_SHIFT 4 /* Pixel delay (-8..+7) */
> +#define DE_FREF_DE_PXQ_SHIFT 3 /* Timing codes from DE */
> +#define DE_FREF_INV_SHIFT 2 /* polarity (1=invert) */
> +#define DE_FREF_SEL_MASK 0x03
> +#define DE_FREF_SEL_SHIFT 0
> +#define DE_FREF_SEL_DE_VHREF 0L /* DE from VHREF (HREF and not(VREF) */
> +#define DE_FREF_SEL_FREF_VHREF 1L /* FREF from VHREF */
> +#define DE_FREF_SEL_FREF_HDMI 2L /* FREF from HDMI */
> +#define DE_FREF_SEL_NONE 3L /* not generated */
> +
> +/* HDMI_SOFT_RST bits */
> +#define RESET_DC BIT(7) /* Reset deep color module */
> +#define RESET_HDCP BIT(6) /* Reset HDCP module */
> +#define RESET_KSV BIT(5) /* Reset KSV-FIFO */
> +#define RESET_SCFG BIT(4) /* Reset HDCP and repeater function */
> +#define RESET_HCFG BIT(3) /* Reset HDCP DDC part */
> +#define RESET_PA BIT(2) /* Reset polarity adjust */
> +#define RESET_EP BIT(1) /* Reset Error protection */
> +#define RESET_TMDS BIT(0) /* Reset TMDS (calib, encoding, flow) */
> +
> +/* HDMI_INFO_RST bits */
> +#define NACK_HDCP BIT(7) /* No ACK on HDCP request */
> +#define RESET_FIFO BIT(4) /* Reset Audio FIFO control */
> +#define RESET_GAMUT BIT(3) /* Clear Gamut packet */
> +#define RESET_AI BIT(2) /* Clear ACP and ISRC packets */
> +#define RESET_IF BIT(1) /* Clear all Audio infoframe packets */
> +#define RESET_AUDIO BIT(0) /* Reset Audio FIFO control */
> +
> +/* HDCP_BCAPS bits */
> +#define HDCP_HDMI BIT(7) /* HDCP suports HDMI (vs DVI only) */
> +#define HDCP_REPEATER BIT(6) /* HDCP supports repeater function */
> +#define HDCP_READY BIT(5) /* set by repeater function */
> +#define HDCP_FAST BIT(4) /* Up to 400kHz */
> +#define HDCP_11 BIT(1) /* HDCP 1.1 supported */
> +#define HDCP_FAST_REAUTH BIT(0) /* fast reauthentication supported */
> +
> +/* Audio output formatter */
> +#define AUDIO_LAYOUT_SP_FLAG BIT(2) /* sp flag used by FIFO */
> +#define AUDIO_LAYOUT_MANUAL BIT(1) /* manual layout (vs per pkt) */
> +#define AUDIO_LAYOUT_LAYOUT1 BIT(0) /* Layout1: AP0-3 vs Layout0:AP0 */
> +
> +/* masks for interrupt status registers */
> +#define MASK_SUS_STATUS 0x1F
> +#define LAST_STATE_REACHED 0x1B
> +#define MASK_CLK_STABLE 0x04
> +#define MASK_CLK_ACTIVE 0x02
> +#define MASK_SUS_STATE 0x10
> +#define MASK_SR_FIFO_FIFO_CTRL 0x30
> +#define MASK_AUDIO_FLAG 0x10
> +
> +/* Rate measurement */
> +#define RATE_REFTIM_ENABLE 0x01
> +#define CLK_MIN_RATE 0x0057e4
> +#define CLK_MAX_RATE 0x0395f8
> +#define WDL_CFG_VAL 0x82
> +#define DC_FILTER_VAL 0x31
> +
> +/* Infoframe */
> +#define VS_HDMI_IF_UPDATE 0x0200
> +#define VS_HDMI_IF 0x0201
> +#define VS_BK1_IF_UPDATE 0x0220
> +#define VS_BK1_IF 0x0221
> +#define VS_BK2_IF_UPDATE 0x0240
> +#define VS_BK2_IF 0x0241
> +#define AVI_IF_UPDATE 0x0260
> +#define AVI_IF 0x0261
> +#define SPD_IF_UPDATE 0x0280
> +#define SPD_IF 0x0281
> +#define AUD_IF_UPDATE 0x02a0
> +#define AUD_IF 0x02a1
> +#define MPS_IF_UPDATE 0x02c0
> +#define MPS_IF 0x02c1

May I suggest to split this off into a tda1997x-regs.h?
It's up to you, but I think it makes the source easier to
manage.

> +
> +/* Audio formats */
> +static const char * const audtype_names[] = {
> + "PCM", /* PCM Samples */
> + "HBR", /* High Bit Rate Audio */
> + "OBA", /* One-Bit Audio */
> + "DST" /* Direct Stream Transfer */
> +};
> +
> +/* Audio output port formats */
> +enum audfmt_types {
> + AUDFMT_TYPE_DISABLED = 0,
> + AUDFMT_TYPE_I2S,
> + AUDFMT_TYPE_SPDIF,
> +};
> +static const char * const audfmt_names[] = {
> + "Disabled",
> + "I2S",
> + "SPDIF",
> +};
> +
> +/* Video input formats */
> +static const char * const hdmi_colorspace_names[] = {
> + "RGB", "YUV422", "YUV444", "YUV420", "", "", "", "",
> +};
> +static const char * const hdmi_colorimetry_names[] = {
> + "", "ITU601", "ITU709", "Extended",
> +};
> +static const char * const v4l2_quantization_names[] = {
> + "Default",
> + "Rull Range (0-255)",
> + "Limited Range (16-235)",
> +};
> +
> +/* Video output port formats */
> +static const char * const vidfmt_names[] = {
> + "RGB444/YUV444", /* RGB/YUV444 16bit data bus, 8bpp */
> + "YUV422 semi-planar", /* YUV422 16bit data base, 8bpp */
> + "YUV422 CCIR656", /* BT656 (YUV 8bpp 2 clock per pixel) */
> + "Invalid",
> +};
> +
> +/*
> + * Colorspace conversion matrices
> + */
> +struct color_matrix_coefs {
> + const char *name;
> + /* Input offsets */
> + s16 offint1;
> + s16 offint2;
> + s16 offint3;
> + /* Coeficients */
> + s16 p11coef;
> + s16 p12coef;
> + s16 p13coef;
> + s16 p21coef;
> + s16 p22coef;
> + s16 p23coef;
> + s16 p31coef;
> + s16 p32coef;
> + s16 p33coef;
> + /* Output offsets */
> + s16 offout1;
> + s16 offout2;
> + s16 offout3;
> +};
> +
> +enum {
> + ITU709_RGBFULL,
> + ITU601_RGBFULL,
> + RGBLIMITED_RGBFULL,
> + RGBLIMITED_ITU601,
> + RGBLIMITED_ITU709,
> + RGBFULL_ITU601,
> + RGBFULL_ITU709,
> +};
> +
> +/* NB: 4096 is 1.0 using fixed point numbers */
> +static const struct color_matrix_coefs conv_matrix[] = {
> + {
> + "YUV709 -> RGB full",
> + -256, -2048, -2048,
> + 4769, -2183, -873,
> + 4769, 7343, 0,
> + 4769, 0, 8652,
> + 0, 0, 0,
> + },
> + {
> + "YUV601 -> RGB full",
> + -256, -2048, -2048,
> + 4769, -3330, -1602,
> + 4769, 6538, 0,
> + 4769, 0, 8264,
> + 256, 256, 256,
> + },
> + {
> + "RGB limited -> RGB full",
> + -256, -256, -256,
> + 0, 4769, 0,
> + 0, 0, 4769,
> + 4769, 0, 0,
> + 0, 0, 0,
> + },
> + {
> + "RGB limited -> ITU601",
> + -256, -256, -256,
> + 2404, 1225, 467,
> + -1754, 2095, -341,
> + -1388, -707, 2095,
> + 256, 2048, 2048,
> + },
> + {
> + "RGB limited -> ITU709",
> + -256, -256, -256,
> + 2918, 867, 295,
> + -1894, 2087, -190,
> + -1607, -477, 2087,
> + 256, 2048, 2048,
> + },
> + {
> + "RGB full -> ITU601",
> + 0, 0, 0,
> + 2065, 1052, 401,
> + -1506, 1799, -293,
> + -1192, -607, 1799,
> + 256, 2048, 2048,
> + },
> + {
> + "RGB full -> ITU709",
> + 0, 0, 0,
> + 2506, 745, 253,
> + -1627, 1792, -163,
> + -1380, -410, 1792,
> + 256, 2048, 2048,
> + },
> +};
> +
> +static const struct v4l2_dv_timings_cap tda1997x_dv_timings_cap = {
> + .type = V4L2_DV_BT_656_1120,
> + /* keep this initialization for compatibility with GCC < 4.4.6 */
> + .reserved = { 0 },
> +
> + V4L2_INIT_BT_TIMINGS(
> + 640, 1920, /* min/max width */
> + 480, 1080, /* min/max height */
> + 13000000, 165000000, /* min/max pixelclock */
> + /* standards */
> + V4L2_DV_BT_STD_CEA861 | V4L2_DV_BT_STD_DMT |
> + V4L2_DV_BT_STD_GTF | V4L2_DV_BT_STD_CVT,
> + /* capabilities */
> + V4L2_DV_BT_CAP_INTERLACED | V4L2_DV_BT_CAP_PROGRESSIVE |
> + V4L2_DV_BT_CAP_REDUCED_BLANKING |
> + V4L2_DV_BT_CAP_CUSTOM
> + )
> +};
> +
> +/*
> + * Video Input formats
> + */
> +static const struct v4l2_dv_timings tda1997x_hdmi_modes[] = {
> + V4L2_DV_BT_DMT_640X350P85,
> + V4L2_DV_BT_DMT_640X400P85,
> + V4L2_DV_BT_DMT_640X480P60,
> + V4L2_DV_BT_DMT_640X480P72,
> + V4L2_DV_BT_DMT_640X480P75,
> + V4L2_DV_BT_DMT_720X400P85,
> + V4L2_DV_BT_CEA_720X480I59_94,
> + V4L2_DV_BT_CEA_720X480P59_94,
> + V4L2_DV_BT_CEA_720X576I50,
> + V4L2_DV_BT_CEA_720X576P50,
> + V4L2_DV_BT_DMT_800X600P60,
> + V4L2_DV_BT_DMT_800X600P72,
> + V4L2_DV_BT_DMT_800X600P75,
> + V4L2_DV_BT_DMT_800X600P85,
> + V4L2_DV_BT_DMT_1024X768P60,
> + V4L2_DV_BT_DMT_1024X768P70,
> + V4L2_DV_BT_DMT_1024X768P75,
> + V4L2_DV_BT_DMT_1024X768P85,
> + V4L2_DV_BT_CEA_1280X720P24,
> + V4L2_DV_BT_CEA_1280X720P25,
> + V4L2_DV_BT_CEA_1280X720P30,
> + V4L2_DV_BT_CEA_1280X720P50,
> + V4L2_DV_BT_CEA_1280X720P60,
> + V4L2_DV_BT_DMT_1280X768P60_RB,
> + V4L2_DV_BT_DMT_1280X768P75,
> + V4L2_DV_BT_DMT_1280X768P85,
> + V4L2_DV_BT_DMT_1280X960P60,
> + V4L2_DV_BT_DMT_1280X1024P60,
> + V4L2_DV_BT_DMT_1280X1024P85,
> + V4L2_DV_BT_DMT_1280X1024P75,
> + V4L2_DV_BT_DMT_1360X768P60,
> + V4L2_DV_BT_DMT_1440X900P60,
> + V4L2_DV_BT_DMT_1400X1050P60_RB,
> + V4L2_DV_BT_DMT_1400X1050P60,
> + V4L2_DV_BT_DMT_1600X1200P60,
> + V4L2_DV_BT_DMT_1680X1050P60_RB,
> + V4L2_DV_BT_CEA_1920X1080P24,
> + V4L2_DV_BT_CEA_1920X1080P25,
> + V4L2_DV_BT_CEA_1920X1080P30,
> + V4L2_DV_BT_CEA_1920X1080I50,
> + V4L2_DV_BT_CEA_1920X1080P50,
> + V4L2_DV_BT_CEA_1920X1080I60,
> + V4L2_DV_BT_CEA_1920X1080P60,
> + V4L2_DV_BT_DMT_1920X1200P60_RB,
> +};
> +
> +/* regulator supplies */
> +static const char * const tda1997x_supply_name[] = {
> + "DOVDD", /* Digital I/O supply */
> + "DVDD", /* Digital Core supply */
> + "AVDD", /* Analog supply */
> +};
> +
> +#define TDA1997X_NUM_SUPPLIES ARRAY_SIZE(tda1997x_supply_name)
> +
> +enum tda1997x_type {
> + TDA19971,
> + TDA19973,
> +};
> +
> +enum tda1997x_hdmi_pads {
> + TDA1997X_PAD_SOURCE,
> + TDA1997X_NUM_PADS,
> +};
> +
> +struct tda1997x_chip_info {
> + enum tda1997x_type type;
> + const char *name;
> +};
> +
> +struct tda1997x_state {
> + const struct tda1997x_chip_info *info;
> + struct tda1997x_platform_data pdata;
> + struct i2c_client *client;
> + struct i2c_client *client_cec;
> + struct v4l2_subdev sd;
> + struct regulator_bulk_data supplies[TDA1997X_NUM_SUPPLIES];
> + struct media_pad pads[TDA1997X_NUM_PADS];
> + struct mutex lock;
> + struct mutex page_lock;
> + char page;
> +
> + /* detected info from chip */
> + int chip_revision;
> + char port_30bit;
> + char output_2p5;
> + char tmdsb_clk;
> + char tmdsb_soc;
> +
> + /* status info */
> + char hdmi_status;
> + char mptrw_in_progress;
> + char state_c5_reached;
> + char activity_status;
> + char input_detect[2];
> +
> + /* video */
> + struct hdmi_avi_infoframe avi_infoframe;
> + struct v4l2_hdmi_colorimetry colorimetry;
> + u32 rgb_quantization_range;
> + struct v4l2_dv_timings timings;
> + const struct v4l2_dv_timings *detected_timings;
> + int fps;
> + const struct color_matrix_coefs *conv;
> + u32 mbus_codes[5]; /* available modes */

I would make a define for the array size.

> + u32 mbus_code; /* current mode */
> + u8 vid_fmt;
> +
> + /* controls */
> + struct v4l2_ctrl_handler hdl;
> + struct v4l2_ctrl *detect_tx_5v_ctrl;
> + struct v4l2_ctrl *rgb_quantization_range_ctrl;
> +
> + /* audio */
> + u8 audio_ch_alloc;
> + int audio_samplerate;
> + int audio_channels;
> + int audio_samplesize;
> + int audio_type;
> + struct mutex audio_lock;
> + struct snd_pcm_substream *audio_stream;
> +
> + /* EDID */
> + struct {
> + u8 edid[256];
> + u32 present;
> + unsigned int blocks;
> + } edid;
> + struct delayed_work delayed_work_enable_hpd;
> +};
> +
> +static const struct v4l2_event tda1997x_ev_fmt = {
> + .type = V4L2_EVENT_SOURCE_CHANGE,
> + .u.src_change.changes = V4L2_EVENT_SRC_CH_RESOLUTION,
> +};
> +
> +static const struct tda1997x_chip_info tda1997x_chip_info[] = {
> + [TDA19971] = {
> + .type = TDA19971,
> + .name = "tda19971",
> + },
> + [TDA19973] = {
> + .type = TDA19973,
> + .name = "tda19973",
> + },
> +};
> +
> +static inline struct tda1997x_state *to_state(struct v4l2_subdev *sd)
> +{
> + return container_of(sd, struct tda1997x_state, sd);
> +}
> +
> +static inline struct v4l2_subdev *to_sd(struct v4l2_ctrl *ctrl)
> +{
> + return &container_of(ctrl->handler, struct tda1997x_state, hdl)->sd;
> +}
> +
> +static int tda1997x_cec_read(struct v4l2_subdev *sd, u8 reg)
> +{
> + struct tda1997x_state *state = to_state(sd);
> + int val;
> +
> + val = i2c_smbus_read_byte_data(state->client_cec, reg);
> + if (val < 0) {
> + v4l_err(state->client, "read reg error: reg=%2x\n", reg);
> + val = -1;
> + }
> +
> + return val;
> +}
> +
> +static int tda1997x_cec_write(struct v4l2_subdev *sd, u8 reg, u8 val)
> +{
> + struct tda1997x_state *state = to_state(sd);
> + int ret = 0;
> +
> + ret = i2c_smbus_write_byte_data(state->client_cec, reg, val);
> + if (ret < 0) {
> + v4l_err(state->client, "write reg error:reg=%2x,val=%2x\n",
> + reg, val);
> + ret = -1;
> + }
> +
> + return ret;
> +}
> +
> +/* -----------------------------------------------------------------------------
> + * I2C transfer
> + */
> +
> +static int tda1997x_setpage(struct v4l2_subdev *sd, u8 page)
> +{
> + struct tda1997x_state *state = to_state(sd);
> + int ret;
> +
> + if (state->page != page) {
> + ret = i2c_smbus_write_byte_data(state->client,
> + REG_CURPAGE_00H, page);
> + if (ret < 0) {
> + v4l_err(state->client,
> + "write reg error:reg=%2x,val=%2x\n",
> + REG_CURPAGE_00H, page);
> + return ret;
> + }
> + state->page = page;
> + }
> + return 0;
> +}
> +
> +static inline int io_read(struct v4l2_subdev *sd, u16 reg)
> +{
> + struct tda1997x_state *state = to_state(sd);
> + int val;
> +
> + mutex_lock(&state->page_lock);
> + if (tda1997x_setpage(sd, reg >> 8)) {
> + val = -1;
> + goto out;
> + }
> +
> + val = i2c_smbus_read_byte_data(state->client, reg&0xff);
> + if (val < 0) {
> + v4l_err(state->client, "read reg error: reg=%2x\n", reg & 0xff);
> + val = -1;
> + goto out;
> + }
> +
> +out:
> + mutex_unlock(&state->page_lock);
> + return val;
> +}
> +
> +static inline long io_read16(struct v4l2_subdev *sd, u16 reg)
> +{
> + u8 val;
> + long lval = 0;
> +
> + val = io_read(sd, reg);
> + if (val < 0)
> + return val;
> + lval |= (val << 8);
> + val = io_read(sd, reg + 1);
> + if (val < 0)
> + return val;
> + lval |= val;
> +
> + return lval;
> +}
> +
> +static inline long io_read24(struct v4l2_subdev *sd, u16 reg)
> +{
> + u8 val;
> + long lval = 0;
> +
> + val = io_read(sd, reg);
> + if (val < 0)
> + return val;
> + lval |= (val << 16);
> + val = io_read(sd, reg + 1);
> + if (val < 0)
> + return val;
> + lval |= (val << 8);
> + val = io_read(sd, reg + 2);
> + if (val < 0)
> + return val;
> + lval |= val;
> +
> + return lval;
> +}
> +
> +static unsigned int io_readn(struct v4l2_subdev *sd, u16 reg, u8 len, u8 *data)
> +{
> + int i;
> + int sz = 0;
> + u8 val;
> +
> + for (i = 0; i < len; i++) {
> + val = io_read(sd, reg + i);
> + if (val < 0)
> + break;
> + data[i] = val;
> + sz++;
> + }
> +
> + return sz;
> +}
> +
> +static int io_write(struct v4l2_subdev *sd, u16 reg, u8 val)
> +{
> + struct tda1997x_state *state = to_state(sd);
> + s32 ret = 0;
> +
> + mutex_lock(&state->page_lock);
> + if (tda1997x_setpage(sd, reg >> 8)) {
> + ret = -1;
> + goto out;
> + }
> +
> + ret = i2c_smbus_write_byte_data(state->client, reg & 0xff, val);
> + if (ret < 0) {
> + v4l_err(state->client, "write reg error:reg=%2x,val=%2x\n",
> + reg&0xff, val);
> + ret = -1;
> + goto out;
> + }
> +
> +out:
> + mutex_unlock(&state->page_lock);
> + return ret;
> +}
> +
> +static int io_write16(struct v4l2_subdev *sd, u16 reg, u16 val)
> +{
> + int ret;
> +
> + ret = io_write(sd, reg, (val >> 8) & 0xff);
> + if (ret < 0)
> + return ret;
> + ret = io_write(sd, reg + 1, val & 0xff);
> + if (ret < 0)
> + return ret;
> + return 0;
> +}
> +
> +static int io_write24(struct v4l2_subdev *sd, u16 reg, u32 val)
> +{
> + int ret;
> +
> + ret = io_write(sd, reg, (val >> 16) & 0xff);
> + if (ret < 0)
> + return ret;
> + ret = io_write(sd, reg + 1, (val >> 8) & 0xff);
> + if (ret < 0)
> + return ret;
> + ret = io_write(sd, reg + 2, val & 0xff);
> + if (ret < 0)
> + return ret;
> + return 0;
> +}
> +
> +/* -----------------------------------------------------------------------------
> + * Hotplug
> + */
> +
> +enum hpd_mode {
> + HPD_LOW_BP, /* HPD low and pulse of at least 100ms */
> + HPD_LOW_OTHER, /* HPD low and pulse of at least 100ms */
> + HPD_HIGH_BP, /* HIGH */
> + HPD_HIGH_OTHER,
> + HPD_PULSE, /* HPD low pulse */
> +};
> +
> +/* manual HPD (Hot Plug Detect) control */
> +static int tda1997x_manual_hpd(struct v4l2_subdev *sd, enum hpd_mode mode)
> +{
> + u8 hpd_auto, hpd_pwr, hpd_man;
> +
> + hpd_auto = io_read(sd, REG_HPD_AUTO_CTRL);
> + hpd_pwr = io_read(sd, REG_HPD_POWER);
> + hpd_man = io_read(sd, REG_HPD_MAN_CTRL);
> +
> + /* mask out unused bits */
> + hpd_man &= (HPD_MAN_CTRL_HPD_PULSE |
> + HPD_MAN_CTRL_5VEN |
> + HPD_MAN_CTRL_HPD_B |
> + HPD_MAN_CTRL_HPD_A);
> +
> + switch (mode) {
> + /* HPD low and pulse of at least 100ms */
> + case HPD_LOW_BP:
> + /* hpd_bp=0 */
> + hpd_pwr &= ~HPD_POWER_BP_MASK;
> + /* disable HPD_A and HPD_B */
> + hpd_man &= ~(HPD_MAN_CTRL_HPD_A | HPD_MAN_CTRL_HPD_B);
> + io_write(sd, REG_HPD_POWER, hpd_pwr);
> + io_write(sd, REG_HPD_MAN_CTRL, hpd_man);
> + break;
> + /* HPD high */
> + case HPD_HIGH_BP:
> + /* hpd_bp=1 */
> + hpd_pwr &= ~HPD_POWER_BP_MASK;
> + hpd_pwr |= 1 << HPD_POWER_BP_SHIFT;
> + io_write(sd, REG_HPD_POWER, hpd_pwr);
> + break;
> + /* HPD low and pulse of at least 100ms */
> + case HPD_LOW_OTHER:
> + /* disable HPD_A and HPD_B */
> + hpd_man &= ~(HPD_MAN_CTRL_HPD_A | HPD_MAN_CTRL_HPD_B);
> + /* hp_other=0 */
> + hpd_auto &= ~HPD_AUTO_HP_OTHER;
> + io_write(sd, REG_HPD_AUTO_CTRL, hpd_auto);
> + io_write(sd, REG_HPD_MAN_CTRL, hpd_man);
> + break;
> + /* HPD high */
> + case HPD_HIGH_OTHER:
> + hpd_auto |= HPD_AUTO_HP_OTHER;
> + io_write(sd, REG_HPD_AUTO_CTRL, hpd_auto);
> + break;
> + /* HPD low pulse */
> + case HPD_PULSE:
> + /* disable HPD_A and HPD_B */
> + hpd_man &= ~(HPD_MAN_CTRL_HPD_A | HPD_MAN_CTRL_HPD_B);
> + io_write(sd, REG_HPD_MAN_CTRL, hpd_man);
> + break;
> + }
> +
> + return 0;
> +}
> +
> +static void tda1997x_delayed_work_enable_hpd(struct work_struct *work)
> +{
> + struct delayed_work *dwork = to_delayed_work(work);
> + struct tda1997x_state *state = container_of(dwork,
> + struct tda1997x_state,
> + delayed_work_enable_hpd);
> + struct v4l2_subdev *sd = &state->sd;
> +
> + v4l2_dbg(2, debug, sd, "%s:\n", __func__);
> +
> + /* Set HPD high */
> + tda1997x_manual_hpd(sd, HPD_HIGH_OTHER);
> + tda1997x_manual_hpd(sd, HPD_HIGH_BP);
> +
> + state->edid.present = 1;
> +}
> +
> +static void tda1997x_disable_edid(struct v4l2_subdev *sd)
> +{
> + struct tda1997x_state *state = to_state(sd);
> +
> + v4l2_dbg(1, debug, sd, "%s\n", __func__);
> + cancel_delayed_work_sync(&state->delayed_work_enable_hpd);
> +
> + /* Set HPD low */
> + tda1997x_manual_hpd(sd, HPD_LOW_BP);
> +}
> +
> +static void tda1997x_enable_edid(struct v4l2_subdev *sd)
> +{
> + struct tda1997x_state *state = to_state(sd);
> +
> + v4l2_dbg(1, debug, sd, "%s\n", __func__);
> +
> + /* Enable hotplug after 100ms */
> + schedule_delayed_work(&state->delayed_work_enable_hpd, HZ / 10);
> +}
> +
> +/* -----------------------------------------------------------------------------
> + * Signal Control
> + */
> +
> +/*
> + * configure vid_fmt based on mbus_code
> + */
> +static int
> +tda1997x_setup_format(struct tda1997x_state *state, u32 code)
> +{
> + v4l_dbg(1, debug, state->client, "%s code=0x%x\n", __func__, code);
> + switch (code) {
> + case MEDIA_BUS_FMT_RGB121212_1X36:
> + case MEDIA_BUS_FMT_RGB888_1X24:
> + case MEDIA_BUS_FMT_YUV12_1X36:
> + case MEDIA_BUS_FMT_YUV8_1X24:
> + state->vid_fmt = OF_FMT_444;
> + break;
> + case MEDIA_BUS_FMT_UYVY12_1X24:
> + case MEDIA_BUS_FMT_UYVY10_1X20:
> + case MEDIA_BUS_FMT_UYVY8_1X16:
> + state->vid_fmt = OF_FMT_422_SMPT;
> + break;
> + case MEDIA_BUS_FMT_UYVY12_2X12:
> + case MEDIA_BUS_FMT_UYVY10_2X10:
> + case MEDIA_BUS_FMT_UYVY8_2X8:
> + state->vid_fmt = OF_FMT_422_CCIR;
> + break;
> + default:
> + v4l_err(state->client, "incompatible format (0x%x)\n", code);
> + return -EINVAL;
> + }
> + v4l_dbg(1, debug, state->client, "%s code=0x%x fmt=%s\n", __func__,
> + code, vidfmt_names[state->vid_fmt]);
> + state->mbus_code = code;
> +
> + return 0;
> +}
> +
> +/*
> + * The color conversion matrix will convert between the colorimetry of the
> + * HDMI input to the desired output format RGB|YUV. RGB output is to be
> + * full-range and YUV is to be limited range.
> + *
> + * RGB full-range uses values from 0 to 255 which is recommended on a monitor
> + * and RGB Limited uses values from 16 to 236 (16=black, 235=white) which is
> + * typically recommended on a TV.
> + */
> +static int
> +tda1997x_configure_csc(struct v4l2_subdev *sd)
> +{
> + struct tda1997x_state *state = to_state(sd);
> + struct hdmi_avi_infoframe *avi = &state->avi_infoframe;
> + struct v4l2_hdmi_colorimetry *c = &state->colorimetry;
> + /* Blanking code values depend on output colorspace (RGB or YUV) */
> + struct blanking_codes {
> + s16 code_gy;
> + s16 code_bu;
> + s16 code_rv;
> + };
> + static const struct blanking_codes rgb_blanking = { 64, 64, 64 };
> + static const struct blanking_codes yuv_blanking = { 64, 512, 512 };
> + const struct blanking_codes *blanking_codes = NULL;
> + u8 reg;
> +
> + v4l_dbg(1, debug, state->client, "input:%s quant:%s output:%s\n",
> + hdmi_colorspace_names[avi->colorspace],
> + v4l2_quantization_names[c->quantization],
> + vidfmt_names[state->vid_fmt]);
> + state->conv = NULL;
> + switch (state->vid_fmt) {
> + /* RGB output */
> + case OF_FMT_444:
> + blanking_codes = &rgb_blanking;
> + if (c->colorspace == V4L2_COLORSPACE_SRGB) {
> + if (c->quantization == V4L2_QUANTIZATION_LIM_RANGE)
> + state->conv = &conv_matrix[RGBLIMITED_RGBFULL];
> + } else {
> + if (c->colorspace == V4L2_COLORSPACE_REC709)
> + state->conv = &conv_matrix[ITU709_RGBFULL];
> + else if (c->colorspace == V4L2_COLORSPACE_SMPTE170M)
> + state->conv = &conv_matrix[ITU601_RGBFULL];
> + }
> + break;
> +
> + /* YUV output */
> + case OF_FMT_422_SMPT: /* semi-planar */
> + case OF_FMT_422_CCIR: /* CCIR656 */
> + blanking_codes = &yuv_blanking;
> + if ((c->colorspace == V4L2_COLORSPACE_SRGB) &&
> + (c->quantization == V4L2_QUANTIZATION_FULL_RANGE)) {
> + if (state->timings.bt.height <= 576)
> + state->conv = &conv_matrix[RGBFULL_ITU601];
> + else
> + state->conv = &conv_matrix[RGBFULL_ITU709];
> + } else if ((c->colorspace == V4L2_COLORSPACE_SRGB) &&
> + (c->quantization == V4L2_QUANTIZATION_LIM_RANGE)) {
> + if (state->timings.bt.height <= 576)
> + state->conv = &conv_matrix[RGBLIMITED_ITU601];
> + else
> + state->conv = &conv_matrix[RGBLIMITED_ITU709];
> + }
> + break;
> + }
> +
> + if (state->conv) {
> + v4l_dbg(1, debug, state->client, "%s\n",
> + state->conv->name);
> + /* enable matrix conversion */
> + reg = io_read(sd, REG_VDP_CTRL);
> + reg &= ~VDP_CTRL_MATRIX_BP;
> + io_write(sd, REG_VDP_CTRL, reg);
> + /* offset inputs */
> + io_write16(sd, REG_VDP_MATRIX + 0, state->conv->offint1);
> + io_write16(sd, REG_VDP_MATRIX + 2, state->conv->offint2);
> + io_write16(sd, REG_VDP_MATRIX + 4, state->conv->offint3);
> + /* coefficients */
> + io_write16(sd, REG_VDP_MATRIX + 6, state->conv->p11coef);
> + io_write16(sd, REG_VDP_MATRIX + 8, state->conv->p12coef);
> + io_write16(sd, REG_VDP_MATRIX + 10, state->conv->p13coef);
> + io_write16(sd, REG_VDP_MATRIX + 12, state->conv->p21coef);
> + io_write16(sd, REG_VDP_MATRIX + 14, state->conv->p22coef);
> + io_write16(sd, REG_VDP_MATRIX + 16, state->conv->p23coef);
> + io_write16(sd, REG_VDP_MATRIX + 18, state->conv->p31coef);
> + io_write16(sd, REG_VDP_MATRIX + 20, state->conv->p32coef);
> + io_write16(sd, REG_VDP_MATRIX + 22, state->conv->p33coef);
> + /* offset outputs */
> + io_write16(sd, REG_VDP_MATRIX + 24, state->conv->offout1);
> + io_write16(sd, REG_VDP_MATRIX + 26, state->conv->offout2);
> + io_write16(sd, REG_VDP_MATRIX + 28, state->conv->offout3);
> + } else {
> + /* disable matrix conversion */
> + reg = io_read(sd, REG_VDP_CTRL);
> + reg |= VDP_CTRL_MATRIX_BP;
> + io_write(sd, REG_VDP_CTRL, reg);
> + }
> +
> + /* SetBlankingCodes */
> + if (blanking_codes) {
> + io_write16(sd, REG_BLK_GY, blanking_codes->code_gy);
> + io_write16(sd, REG_BLK_BU, blanking_codes->code_bu);
> + io_write16(sd, REG_BLK_RV, blanking_codes->code_rv);
> + }
> +
> + return 0;
> +}
> +
> +/* Configure frame detection window and VHREF timing generator */
> +static int
> +tda1997x_configure_vhref(struct v4l2_subdev *sd)
> +{
> + struct tda1997x_state *state = to_state(sd);
> + const struct v4l2_bt_timings *bt;
> + int width, lines;
> + u16 href_start, href_end;
> + u16 vref_f1_start, vref_f2_start;
> + u8 vref_f1_width, vref_f2_width;
> + u8 field_polarity;
> + u16 fieldref_f1_start, fieldref_f2_start;
> + u8 reg;
> +
> + if (!state->detected_timings)
> + return -EINVAL;
> + bt = &state->detected_timings->bt;
> + href_start = bt->hbackporch + bt->hsync + 1;
> + href_end = href_start + bt->width;
> + vref_f1_start = bt->height + bt->vbackporch + bt->vsync +
> + bt->il_vbackporch + bt->il_vsync +
> + bt->il_vfrontporch;
> + vref_f1_width = bt->vbackporch + bt->vsync + bt->vfrontporch;
> + vref_f2_start = 0;
> + vref_f2_width = 0;
> + fieldref_f1_start = 0;
> + fieldref_f2_start = 0;
> + if (bt->interlaced) {
> + vref_f2_start = (bt->height / 2) +
> + (bt->il_vbackporch + bt->il_vsync - 1);
> + vref_f2_width = bt->il_vbackporch + bt->il_vsync +
> + bt->il_vfrontporch;
> + fieldref_f2_start = vref_f2_start + bt->il_vfrontporch +
> + fieldref_f1_start;
> + }
> + field_polarity = 0;
> +
> + width = V4L2_DV_BT_FRAME_WIDTH(bt);
> + lines = V4L2_DV_BT_FRAME_HEIGHT(bt);
> +
> + /*
> + * Configure Frame Detection Window:
> + * horiz area where the VHREF module consider a VSYNC a new frame
> + */
> + io_write16(sd, REG_FDW_S, 0x2ef); /* start position */
> + io_write16(sd, REG_FDW_E, 0x141); /* end position */
> +
> + /* Set Pixel And Line Counters */
> + if (state->chip_revision == 0)
> + io_write16(sd, REG_PXCNT_PR, 4);
> + else
> + io_write16(sd, REG_PXCNT_PR, 1);
> + io_write16(sd, REG_PXCNT_NPIX, width & MASK_VHREF);
> + io_write16(sd, REG_LCNT_PR, 1);
> + io_write16(sd, REG_LCNT_NLIN, lines & MASK_VHREF);
> +
> + /*
> + * Configure the VHRef timing generator responsible for rebuilding all
> + * horiz and vert synch and ref signals from its input allowing auto
> + * detection algorithms and forcing predefined modes (480i & 576i)
> + */
> + reg = VHREF_STD_DET_OFF << VHREF_STD_DET_SHIFT;
> + io_write(sd, REG_VHREF_CTRL, reg);
> +
> + /*
> + * Configure the VHRef timing values. In case the VHREF generator has
> + * been configured in manual mode, this will allow to manually set all
> + * horiz and vert ref values (non-active pixel areas) of the generator
> + * and allows setting the frame reference params.
> + */
> + /* horizontal reference start/end */
> + io_write16(sd, REG_HREF_S, href_start & MASK_VHREF);
> + io_write16(sd, REG_HREF_E, href_end & MASK_VHREF);
> + /* vertical reference f1 start/end */
> + io_write16(sd, REG_VREF_F1_S, vref_f1_start & MASK_VHREF);
> + io_write(sd, REG_VREF_F1_WIDTH, vref_f1_width);
> + /* vertical reference f2 start/end */
> + io_write16(sd, REG_VREF_F2_S, vref_f2_start & MASK_VHREF);
> + io_write(sd, REG_VREF_F2_WIDTH, vref_f2_width);
> +
> + /* F1/F2 FREF, field polarity */
> + reg = fieldref_f1_start & MASK_VHREF;
> + reg |= field_polarity << 8;
> + io_write16(sd, REG_FREF_F1_S, reg);
> + reg = fieldref_f2_start & MASK_VHREF;
> + io_write16(sd, REG_FREF_F2_S, reg);
> +
> + return 0;
> +}
> +
> +/* Configure Video Output port signals */
> +static int
> +tda1997x_configure_vidout(struct tda1997x_state *state)
> +{
> + struct v4l2_subdev *sd = &state->sd;
> + struct tda1997x_platform_data *pdata = &state->pdata;
> + u8 prefilter;
> + u8 reg;
> +
> + /* Configure pixel clock generator: delay, polarity, rate */
> + reg = (state->vid_fmt == OF_FMT_422_CCIR) ?
> + PCLK_SEL_X2 : PCLK_SEL_X1;
> + reg |= pdata->vidout_delay_pclk << PCLK_DELAY_SHIFT;
> + reg |= pdata->vidout_inv_pclk << PCLK_INV_SHIFT;
> + io_write(sd, REG_PCLK, reg);
> +
> + /* Configure pre-filter */
> + prefilter = 0; /* filters off */
> + /* YUV422 mode requires conversion */
> + if ((state->vid_fmt == OF_FMT_422_SMPT)
> + || (state->vid_fmt == OF_FMT_422_CCIR)) {

Odd alignment. Usually the || goes to the end of the previous line.

> + /* 2/7taps for Rv and Bu */

Space after '2/7'?

> + prefilter = FILTERS_CTRL_2_7TAP << FILTERS_CTRL_BU_SHIFT |
> + FILTERS_CTRL_2_7TAP << FILTERS_CTRL_RV_SHIFT;
> + }
> + io_write(sd, REG_FILTERS_CTRL, prefilter);
> +
> + /* Configure video port */
> + reg = state->vid_fmt & OF_FMT_MASK;
> + if (state->vid_fmt == OF_FMT_422_CCIR)
> + reg |= (OF_BLK | OF_TRC);
> + reg |= OF_VP_ENABLE;
> + io_write(sd, REG_OF, reg);
> +
> + /* Configure formatter and conversions */
> + reg = io_read(sd, REG_VDP_CTRL);
> + /* pre-filter is needed unless (REG_FILTERS_CTRL == 0) */
> + if (!prefilter)
> + reg |= VDP_CTRL_PREFILTER_BP;
> + else
> + reg &= ~VDP_CTRL_PREFILTER_BP;
> + /* formatter is needed for YUV422 and for trc/blc codes */
> + if (state->vid_fmt == OF_FMT_444)
> + reg |= VDP_CTRL_FORMATTER_BP;
> + /* formatter and compdel needed for timing/blanking codes */
> + else
> + reg &= ~(VDP_CTRL_FORMATTER_BP | VDP_CTRL_COMPDEL_BP);
> + /* activate compdel for small sync delays */
> + if ((pdata->vidout_delay_vs < 4) || (pdata->vidout_delay_hs < 4))
> + reg &= ~VDP_CTRL_COMPDEL_BP;
> + io_write(sd, REG_VDP_CTRL, reg);
> +
> + /* Configure DE output signal: delay, polarity, and source */
> + reg = pdata->vidout_delay_de << DE_FREF_DELAY_SHIFT |
> + pdata->vidout_inv_de << DE_FREF_INV_SHIFT |
> + pdata->vidout_sel_de << DE_FREF_SEL_SHIFT;
> + io_write(sd, REG_DE_FREF, reg);
> +
> + /* Configure HS/HREF output signal: delay, polarity, and source */
> + if (state->vid_fmt != OF_FMT_422_CCIR) {
> + reg = pdata->vidout_delay_hs << HS_HREF_DELAY_SHIFT |
> + pdata->vidout_inv_hs << HS_HREF_INV_SHIFT |
> + pdata->vidout_sel_hs << HS_HREF_SEL_SHIFT;
> + } else
> + reg = HS_HREF_SEL_NONE << HS_HREF_SEL_SHIFT;
> + io_write(sd, REG_HS_HREF, reg);
> +
> + /* Configure VS/VREF output signal: delay, polarity, and source */
> + if (state->vid_fmt != OF_FMT_422_CCIR) {
> + reg = pdata->vidout_delay_vs << VS_VREF_DELAY_SHIFT |
> + pdata->vidout_inv_vs << VS_VREF_INV_SHIFT |
> + pdata->vidout_sel_vs << VS_VREF_SEL_SHIFT;
> + } else
> + reg = VS_VREF_SEL_NONE << VS_VREF_SEL_SHIFT;
> + io_write(sd, REG_VS_VREF, reg);
> +
> + return 0;
> +}
> +
> +/* Configure Audio output port signals */
> +static int
> +tda1997x_configure_audout(struct v4l2_subdev *sd, u8 channel_assignment)
> +{
> + struct tda1997x_state *state = to_state(sd);
> + struct tda1997x_platform_data *pdata = &state->pdata;
> + bool sp_used_by_fifo = 1;
> + u8 reg;
> +
> + if (!pdata->audout_format)
> + return 0;
> +
> + /* channel assignment (CEA-861-D Table 20) */
> + io_write(sd, REG_AUDIO_PATH, channel_assignment);
> +
> + /* Audio output configuration */
> + reg = 0;
> + switch (pdata->audout_format) {
> + case AUDFMT_TYPE_I2S:
> + reg |= AUDCFG_BUS_I2S << AUDCFG_BUS_SHIFT;
> + break;
> + case AUDFMT_TYPE_SPDIF:
> + reg |= AUDCFG_BUS_SPDIF << AUDCFG_BUS_SHIFT;
> + break;
> + }
> + switch (state->audio_type) {
> + case AUDCFG_TYPE_PCM:
> + reg |= AUDCFG_TYPE_PCM << AUDCFG_TYPE_SHIFT;
> + break;
> + case AUDCFG_TYPE_OBA:
> + reg |= AUDCFG_TYPE_OBA << AUDCFG_TYPE_SHIFT;
> + break;
> + case AUDCFG_TYPE_DST:
> + reg |= AUDCFG_TYPE_DST << AUDCFG_TYPE_SHIFT;
> + sp_used_by_fifo = 0;
> + break;
> + case AUDCFG_TYPE_HBR:
> + reg |= AUDCFG_TYPE_HBR << AUDCFG_TYPE_SHIFT;
> + if (pdata->audout_layout == 1) {
> + /* demuxed via AP0:AP3 */
> + reg |= AUDCFG_HBR_DEMUX << AUDCFG_HBR_SHIFT;
> + if (pdata->audout_format == AUDFMT_TYPE_SPDIF)
> + sp_used_by_fifo = 0;
> + } else {
> + /* straight via AP0 */
> + reg |= AUDCFG_HBR_STRAIGHT << AUDCFG_HBR_SHIFT;
> + }
> + break;
> + }
> + if (pdata->audout_width == 32)
> + reg |= AUDCFG_I2SW_32 << AUDCFG_I2SW_SHIFT;
> + else
> + reg |= AUDCFG_I2SW_16 << AUDCFG_I2SW_SHIFT;
> +
> + /* automatic hardware mute */
> + if (pdata->audio_auto_mute)
> + reg |= AUDCFG_AUTO_MUTE_EN;
> + /* clock polarity */
> + if (pdata->audout_invert_clk)
> + reg |= AUDCFG_CLK_INVERT;
> + io_write(sd, REG_AUDCFG, reg);
> +
> + /* audio layout */
> + reg = (pdata->audout_layout) ? AUDIO_LAYOUT_LAYOUT1 : 0;
> + if (!pdata->audout_layoutauto)
> + reg |= AUDIO_LAYOUT_MANUAL;
> + if (sp_used_by_fifo)
> + reg |= AUDIO_LAYOUT_SP_FLAG;
> + io_write(sd, REG_AUDIO_LAYOUT, reg);
> +
> + /* FIFO Latency value */
> + io_write(sd, REG_FIFO_LATENCY_VAL, 0x80);
> +
> + /* Audio output port config */
> + if (sp_used_by_fifo) {
> + reg = AUDIO_OUT_ENABLE_AP0;
> + if (channel_assignment >= 0x01)
> + reg |= AUDIO_OUT_ENABLE_AP1;
> + if (channel_assignment >= 0x04)
> + reg |= AUDIO_OUT_ENABLE_AP2;
> + if (channel_assignment >= 0x0c)
> + reg |= AUDIO_OUT_ENABLE_AP3;
> + /* specific cases where AP1 is not used */
> + if ((channel_assignment == 0x04)
> + || (channel_assignment == 0x08)
> + || (channel_assignment == 0x0c)
> + || (channel_assignment == 0x10)
> + || (channel_assignment == 0x14)
> + || (channel_assignment == 0x18)
> + || (channel_assignment == 0x1c))
> + reg &= ~AUDIO_OUT_ENABLE_AP1;
> + /* specific cases where AP2 is not used */
> + if ((channel_assignment >= 0x14)
> + && (channel_assignment <= 0x17))
> + reg &= ~AUDIO_OUT_ENABLE_AP2;
> + } else {
> + reg = AUDIO_OUT_ENABLE_AP3 |
> + AUDIO_OUT_ENABLE_AP2 |
> + AUDIO_OUT_ENABLE_AP1 |
> + AUDIO_OUT_ENABLE_AP0;
> + }
> + if (pdata->audout_format == AUDFMT_TYPE_I2S)
> + reg |= (AUDIO_OUT_ENABLE_ACLK | AUDIO_OUT_ENABLE_WS);
> + io_write(sd, REG_AUDIO_OUT_ENABLE, reg);
> +
> + /* reset test mode to normal audio freq auto selection */
> + io_write(sd, REG_TEST_MODE, 0x00);
> +
> + return 0;
> +}
> +
> +/* Soft Reset of specific hdmi info */
> +static int
> +tda1997x_hdmi_info_reset(struct v4l2_subdev *sd, u8 info_rst, bool reset_sus)
> +{
> + u8 reg;
> +
> + /* reset infoframe engine packets */
> + reg = io_read(sd, REG_HDMI_INFO_RST);
> + io_write(sd, REG_HDMI_INFO_RST, info_rst);
> +
> + /* if infoframe engine has been reset clear INT_FLG_MODE */
> + if (reg & RESET_IF) {
> + reg = io_read(sd, REG_INT_FLG_CLR_MODE);
> + io_write(sd, REG_INT_FLG_CLR_MODE, reg);
> + }
> +
> + /* Disable REFTIM to restart start-up-sequencer (SUS) */
> + reg = io_read(sd, REG_RATE_CTRL);
> + reg &= ~RATE_REFTIM_ENABLE;
> + if (!reset_sus)
> + reg |= RATE_REFTIM_ENABLE;
> + reg = io_write(sd, REG_RATE_CTRL, reg);
> +
> + return 0;
> +}
> +
> +static void
> +tda1997x_power_mode(struct tda1997x_state *state, bool enable)
> +{
> + struct v4l2_subdev *sd = &state->sd;
> + u8 reg;
> +
> + if (enable) {
> + /* Automatic control of TMDS */
> + io_write(sd, REG_PON_OVR_EN, PON_DIS);
> + /* Enable current bias unit */
> + io_write(sd, REG_CFG1, PON_EN);
> + /* Enable deep color PLL */
> + io_write(sd, REG_DEEP_PLL7_BYP, PON_DIS);
> + /* Output buffers active */
> + reg = io_read(sd, REG_OF);
> + reg &= ~OF_VP_ENABLE;
> + io_write(sd, REG_OF, reg);
> + } else {
> + /* Power down EDID mode sequence */
> + /* Output buffers in HiZ */
> + reg = io_read(sd, REG_OF);
> + reg |= OF_VP_ENABLE;
> + io_write(sd, REG_OF, reg);
> + /* Disable deep color PLL */
> + io_write(sd, REG_DEEP_PLL7_BYP, PON_EN);
> + /* Disable current bias unit */
> + io_write(sd, REG_CFG1, PON_DIS);
> + /* Manual control of TMDS */
> + io_write(sd, REG_PON_OVR_EN, PON_EN);
> + }
> +}
> +
> +static bool
> +tda1997x_detect_tx_5v(struct v4l2_subdev *sd)
> +{
> + u8 reg = io_read(sd, REG_DETECT_5V);
> +
> + return ((reg & DETECT_5V_SEL) ? 1 : 0);
> +}
> +
> +static bool
> +tda1997x_detect_tx_hpd(struct v4l2_subdev *sd)
> +{
> + u8 reg = io_read(sd, REG_DETECT_5V);
> +
> + return ((reg & DETECT_HPD) ? 1 : 0);
> +}
> +
> +static int
> +tda1997x_detect_std(struct tda1997x_state *state)
> +{
> + struct v4l2_subdev *sd = &state->sd;
> + u32 vper;
> + u16 hper;
> + u16 hsper;
> + int i;
> +
> + /*
> + * Read the FMT registers
> + * REG_V_PER: Period of a frame (or two fields) in MCLK(27MHz) cycles
> + * REG_H_PER: Period of a line in MCLK(27MHz) cycles
> + * REG_HS_WIDTH: Period of horiz sync pulse in MCLK(27MHz) cycles
> + */
> + vper = io_read24(sd, REG_V_PER) & MASK_VPER;
> + hper = io_read16(sd, REG_H_PER) & MASK_HPER;
> + hsper = io_read16(sd, REG_HS_WIDTH) & MASK_HSWIDTH;
> + if (!vper || !hper || !hsper)
> + return -ENOLINK;
> + v4l2_dbg(1, debug, sd, "Signal Timings: %u/%u/%u\n", vper, hper, hsper);
> +
> + /* look for matching timings */
> + for (i = 0; i < ARRAY_SIZE(tda1997x_hdmi_modes); i++) {
> + const struct v4l2_bt_timings *bt = &tda1997x_hdmi_modes[i].bt;
> + u32 lines, width, _hper, _hsper;
> + u32 vmin, vmax, hmin, hmax, hsmin, hsmax;
> + bool vmatch, hmatch, hsmatch;
> +
> + width = V4L2_DV_BT_FRAME_WIDTH(bt);
> + lines = V4L2_DV_BT_FRAME_HEIGHT(bt);
> + _hper = (u32)bt->pixelclock / width;
> + if (bt->interlaced)
> + lines /= 2;
> + /* vper +/- 0.7% */
> + vmin = ((27000000 / 1000) * 993) / _hper * lines;
> + vmax = ((27000000 / 1000) * 1007) / _hper * lines;
> + /* hper +/- 1.0% */
> + hmin = ((27000000 / 100) * 99) / _hper;
> + hmax = ((27000000 / 100) * 101) / _hper;
> + /* hsper +/- 2 (take care to avoid 32bit overflow) */
> + _hsper = 27000 * bt->hsync / ((u32)bt->pixelclock/1000);
> + hsmin = _hsper - 2;
> + hsmax = _hsper + 2;
> +
> + /* vmatch matches the framerate */
> + vmatch = ((vper <= vmax) && (vper >= vmin)) ? 1 : 0;
> + /* hmatch matches the width */
> + hmatch = ((hper <= hmax) && (hper >= hmin)) ? 1 : 0;
> + /* hsmatch matches the hswidth */
> + hsmatch = ((hsper <= hsmax) && (hsper >= hsmin)) ? 1 : 0;
> + if (hmatch && vmatch && hsmatch) {
> + state->detected_timings = &tda1997x_hdmi_modes[i];
> + v4l2_print_dv_timings(sd->name, "Detected format: ",
> + state->detected_timings, false);
> + return 0;
> + }
> + }
> +
> + v4l_err(state->client, "no resolution match for timings: %d/%d/%d\n",
> + vper, hper, hsper);
> + return -EINVAL;
> +}
> +
> +/* some sort of errata workaround for chip revision 0 (N1) */
> +static void tda1997x_reset_n1(struct tda1997x_state *state)
> +{
> + struct v4l2_subdev *sd = &state->sd;
> + u8 reg;
> +
> + /* clear HDMI mode flag in BCAPS */
> + io_write(sd, REG_CLK_CFG, CLK_CFG_SEL_ACLK_EN | CLK_CFG_SEL_ACLK);
> + io_write(sd, REG_PON_OVR_EN, PON_EN);
> + io_write(sd, REG_PON_CBIAS, PON_EN);
> + io_write(sd, REG_PON_PLL, PON_EN);
> +
> + reg = io_read(sd, REG_MODE_REC_CFG1);
> + reg &= ~0x06;
> + reg |= 0x02;
> + io_write(sd, REG_MODE_REC_CFG1, reg);
> + io_write(sd, REG_CLK_CFG, CLK_CFG_DIS);
> + io_write(sd, REG_PON_OVR_EN, PON_DIS);
> + reg = io_read(sd, REG_MODE_REC_CFG1);
> + reg &= ~0x06;
> + io_write(sd, REG_MODE_REC_CFG1, reg);
> +}
> +
> +/*
> + * Activity detection must only be notified when stable_clk_x AND active_x
> + * bits are set to 1. If only stable_clk_x bit is set to 1 but not
> + * active_x, it means that the TMDS clock is not in the defined range
> + * and activity detection must not be notified.
> + */
> +static u8
> +tda1997x_read_activity_status_regs(struct v4l2_subdev *sd)
> +{
> + u8 reg, status = 0;
> +
> + /* Read CLK_A_STATUS register */
> + reg = io_read(sd, REG_CLK_A_STATUS);
> + /* when stable_clk_x is set to 1, check active_x bit */
> + if ((reg & MASK_CLK_STABLE) && !(reg & MASK_CLK_ACTIVE))
> + reg &= ~MASK_CLK_STABLE;
> + status |= ((reg & MASK_CLK_STABLE) >> 2);
> +
> + /* Read CLK_B_STATUS register */
> + reg = io_read(sd, REG_CLK_B_STATUS);
> + /* when stable_clk_x is set to 1, check active_x bit */
> + if ((reg & MASK_CLK_STABLE) && !(reg & MASK_CLK_ACTIVE))
> + reg &= ~MASK_CLK_STABLE;
> + status |= ((reg & MASK_CLK_STABLE) >> 1);
> +
> + /* Read the SUS_STATUS register */
> + reg = io_read(sd, REG_SUS_STATUS);
> +
> + /* If state = 5 => TMDS is locked */
> + if ((reg & MASK_SUS_STATUS) == LAST_STATE_REACHED)
> + status |= MASK_SUS_STATE;
> + else
> + status &= ~MASK_SUS_STATE;
> +
> + return status;
> +}
> +
> +/* parse an infoframe and do some sanity checks on it */
> +static unsigned int
> +tda1997x_parse_infoframe(struct tda1997x_state *state, u16 addr)
> +{
> + struct v4l2_subdev *sd = &state->sd;
> + struct v4l2_hdmi_colorimetry *c = &state->colorimetry;
> + union hdmi_infoframe frame;
> + u8 buffer[40];
> + u8 reg;
> + int len, err;
> +
> + /* read data */
> + len = io_readn(sd, addr, sizeof(buffer), buffer);
> + err = hdmi_infoframe_unpack(&frame, buffer);
> + if (err) {
> + v4l_err(state->client,
> + "failed parsing %d byte infoframe: 0x%04x/0x%02x\n",
> + len, addr, buffer[0]);
> + return err;
> + }
> + hdmi_infoframe_log(KERN_INFO, &state->client->dev, &frame);
> + switch (frame.any.type) {
> + /* Audio InfoFrame: see HDMI spec 8.2.2 */
> + case HDMI_INFOFRAME_TYPE_AUDIO:
> + /* sample rate */
> + switch (frame.audio.sample_frequency) {
> + case HDMI_AUDIO_SAMPLE_FREQUENCY_32000:
> + state->audio_samplerate = 32000;
> + break;
> + case HDMI_AUDIO_SAMPLE_FREQUENCY_44100:
> + state->audio_samplerate = 44100;
> + break;
> + case HDMI_AUDIO_SAMPLE_FREQUENCY_48000:
> + state->audio_samplerate = 48000;
> + break;
> + case HDMI_AUDIO_SAMPLE_FREQUENCY_88200:
> + state->audio_samplerate = 88200;
> + break;
> + case HDMI_AUDIO_SAMPLE_FREQUENCY_96000:
> + state->audio_samplerate = 96000;
> + break;
> + case HDMI_AUDIO_SAMPLE_FREQUENCY_176400:
> + state->audio_samplerate = 176400;
> + break;
> + case HDMI_AUDIO_SAMPLE_FREQUENCY_192000:
> + state->audio_samplerate = 192000;
> + break;
> + default:
> + case HDMI_AUDIO_SAMPLE_FREQUENCY_STREAM:
> + break;
> + }
> +
> + /* sample size */
> + switch (frame.audio.sample_size) {
> + case HDMI_AUDIO_SAMPLE_SIZE_16:
> + state->audio_samplesize = 16;
> + break;
> + case HDMI_AUDIO_SAMPLE_SIZE_20:
> + state->audio_samplesize = 20;
> + break;
> + case HDMI_AUDIO_SAMPLE_SIZE_24:
> + state->audio_samplesize = 24;
> + break;
> + case HDMI_AUDIO_SAMPLE_SIZE_STREAM:
> + default:
> + break;
> + }
> +
> + /* Channel Count */
> + state->audio_channels = frame.audio.channels;
> + if (frame.audio.channel_allocation &&
> + frame.audio.channel_allocation != state->audio_ch_alloc) {
> + /* use the channel assignment from the infoframe */
> + state->audio_ch_alloc = frame.audio.channel_allocation;
> + tda1997x_configure_audout(sd, state->audio_ch_alloc);
> + /* reset the audio FIFO */
> + tda1997x_hdmi_info_reset(sd, RESET_AUDIO, false);
> + }
> + break;
> +
> + /* Auxiliary Video information (AVI) InfoFrame: see HDMI spec 8.2.1 */
> + case HDMI_INFOFRAME_TYPE_AVI:
> + state->avi_infoframe = frame.avi;
> + state->colorimetry = v4l2_hdmi_rx_colorimetry(&frame.avi, NULL,
> + state->timings.bt.height);
> + /* If ycbcr_enc is V4L2_YCBCR_ENC_DEFAULT, we receive RGB */
> + if (c->ycbcr_enc == V4L2_YCBCR_ENC_DEFAULT) {
> + switch (state->rgb_quantization_range) {
> + case V4L2_DV_RGB_RANGE_LIMITED:
> + c->quantization = V4L2_QUANTIZATION_FULL_RANGE;
> + break;
> + case V4L2_DV_RGB_RANGE_FULL:
> + c->quantization = V4L2_QUANTIZATION_LIM_RANGE;
> + break;
> + }
> + }
> + v4l_dbg(1, debug, state->client,
> + "colorspace=%d/%d colorimetry=%d range=%s content=%d\n",
> + frame.avi.colorspace, c->colorspace,
> + frame.avi.colorimetry,
> + v4l2_quantization_names[c->quantization],
> + frame.avi.content_type);
> +
> + /* configure upsampler: 0=bypass 1=repeatchroma 2=interpolate */
> + reg = io_read(sd, REG_PIX_REPEAT);
> + reg &= ~PIX_REPEAT_MASK_UP_SEL;
> + if (frame.avi.colorspace == HDMI_COLORSPACE_YUV422)
> + reg |= (PIX_REPEAT_CHROMA << PIX_REPEAT_SHIFT);
> + io_write(sd, REG_PIX_REPEAT, reg);
> +
> + /* ConfigurePixelRepeater: repeat n-times each pixel */
> + reg = io_read(sd, REG_PIX_REPEAT);
> + reg &= ~PIX_REPEAT_MASK_REP;
> + reg |= frame.avi.pixel_repeat;
> + io_write(sd, REG_PIX_REPEAT, reg);
> +
> + /* configure the receiver with the new colorspace */
> + tda1997x_configure_csc(sd);
> + break;
> + default:
> + break;
> + }
> + return 0;
> +}
> +
> +static void tda1997x_irq_sus(struct tda1997x_state *state, u8 *flags)
> +{
> + struct v4l2_subdev *sd = &state->sd;
> + u8 reg, source;
> +
> + source = io_read(sd, REG_INT_FLG_CLR_SUS);
> + io_write(sd, REG_INT_FLG_CLR_SUS, source);
> +
> + if (source & MASK_MPT) {
> + /* reset MTP in use flag if set */
> + if (state->mptrw_in_progress)
> + state->mptrw_in_progress = 0;
> + }
> +
> + if (source & MASK_SUS_END) {
> + /* reset audio FIFO */
> + reg = io_read(sd, REG_HDMI_INFO_RST);
> + reg |= MASK_SR_FIFO_FIFO_CTRL;
> + io_write(sd, REG_HDMI_INFO_RST, reg);
> + reg &= ~MASK_SR_FIFO_FIFO_CTRL;
> + io_write(sd, REG_HDMI_INFO_RST, reg);
> +
> + /* reset HDMI flags */
> + state->hdmi_status = 0;
> + }
> +
> + /* filter FMT interrupt based on SUS state */
> + reg = io_read(sd, REG_SUS_STATUS);
> + if (((reg & MASK_SUS_STATUS) != LAST_STATE_REACHED)
> + || (source & MASK_MPT)) {
> + source &= ~MASK_FMT;
> + }
> +
> + if (source & (MASK_FMT | MASK_SUS_END)) {
> + reg = io_read(sd, REG_SUS_STATUS);
> + if ((reg & MASK_SUS_STATUS) != LAST_STATE_REACHED) {
> + v4l_err(state->client, "BAD SUS STATUS\n");
> + return;
> + }
> +
> + /* There is new activity, the status for HDCP repeater state */
> + state->state_c5_reached = 0;
> +
> + /* Detect the new resolution */
> + if (!tda1997x_detect_std(state))
> + v4l2_subdev_notify_event(&state->sd, &tda1997x_ev_fmt);
> + }
> +}
> +
> +static void tda1997x_irq_ddc(struct tda1997x_state *state, u8 *flags)
> +{
> + struct v4l2_subdev *sd = &state->sd;
> + u8 source;
> +
> + source = io_read(sd, REG_INT_FLG_CLR_DDC);
> + io_write(sd, REG_INT_FLG_CLR_DDC, source);
> + if (source & MASK_EDID_MTP) {
> + /* reset MTP in use flag if set */
> + if (state->mptrw_in_progress)
> + state->mptrw_in_progress = 0;
> + }
> +
> + /* Detection of +5V */
> + if (source & MASK_DET_5V) {
> + v4l2_ctrl_s_ctrl(state->detect_tx_5v_ctrl,
> + tda1997x_detect_tx_5v(sd));
> + }
> +}
> +
> +static void tda1997x_irq_rate(struct tda1997x_state *state, u8 *flags)
> +{
> + struct v4l2_subdev *sd = &state->sd;
> + u8 reg, source;
> +
> + u8 irq_status, last_irq_status;
> +
> + source = io_read(sd, REG_INT_FLG_CLR_RATE);
> + io_write(sd, REG_INT_FLG_CLR_RATE, source);
> +
> + /* read status regs */
> + last_irq_status = irq_status = tda1997x_read_activity_status_regs(sd);
> +
> + /*
> + * read clock status reg until INT_FLG_CLR_RATE is still 0
> + * after the read to make sure its the last one
> + */
> + reg = source;
> + while (reg != 0) {
> + irq_status = tda1997x_read_activity_status_regs(sd);
> + reg = io_read(sd, REG_INT_FLG_CLR_RATE);
> + io_write(sd, REG_INT_FLG_CLR_RATE, reg);
> + source |= reg;
> + }
> +
> + /* we only pay attention to stability change events */
> + if (source & (MASK_RATE_A_ST | MASK_RATE_B_ST)) {
> + int input = (source & MASK_RATE_A_ST)?0:1;
> + u8 mask = 1<<input;
> +
> + /* state change */
> + if ((irq_status & mask) != (state->activity_status & mask)) {
> + /* activity lost */
> + if ((irq_status & mask) == 0) {
> + v4l_info(state->client,
> + "HDMI-%c: Digital Activity Lost\n",
> + input+'A');
> +
> + /* bypass up/down sampler and pixel repeater */
> + reg = io_read(sd, REG_PIX_REPEAT);
> + reg &= ~PIX_REPEAT_MASK_UP_SEL;
> + reg &= ~PIX_REPEAT_MASK_REP;
> + io_write(sd, REG_PIX_REPEAT, reg);
> +
> + if (state->chip_revision == 0)
> + tda1997x_reset_n1(state);
> +
> + state->detected_timings = NULL;
> + state->input_detect[input] = 0;
> + v4l2_subdev_notify_event(sd, &tda1997x_ev_fmt);
> + }
> +
> + /* activity detected */
> + else {
> + v4l_info(state->client,
> + "HDMI-%c: Digital Activity Detected\n",
> + input+'A');
> + state->input_detect[input] = 1;
> + }
> +
> + /* hold onto current state */
> + state->activity_status = (irq_status & mask);
> + }
> + }
> +}
> +
> +static void tda1997x_irq_info(struct tda1997x_state *state, u8 *flags)
> +{
> + struct v4l2_subdev *sd = &state->sd;
> + u8 source;
> +
> + source = io_read(sd, REG_INT_FLG_CLR_INFO);
> + io_write(sd, REG_INT_FLG_CLR_INFO, source);
> +
> + /* Audio infoframe */
> + if (source & MASK_AUD_IF) {
> + tda1997x_parse_infoframe(state, AUD_IF);
> + source &= ~MASK_AUD_IF;
> + }
> +
> + /* Source Product Descriptor infoframe change */
> + if (source & MASK_SPD_IF) {
> + tda1997x_parse_infoframe(state, SPD_IF);
> + source &= ~MASK_SPD_IF;
> + }
> +
> + /* Auxiliary Video Information infoframe */
> + if (source & MASK_AVI_IF) {
> + tda1997x_parse_infoframe(state, AVI_IF);
> + source &= ~MASK_AVI_IF;
> + }
> +}
> +
> +static void tda1997x_irq_audio(struct tda1997x_state *state, u8 *flags)
> +{
> + struct v4l2_subdev *sd = &state->sd;
> + u8 reg, source;
> +
> + source = io_read(sd, REG_INT_FLG_CLR_AUDIO);
> + io_write(sd, REG_INT_FLG_CLR_AUDIO, source);
> +
> + /* reset audio FIFO on FIFO pointer error or audio mute */
> + if (source & MASK_ERROR_FIFO_PT ||
> + source & MASK_MUTE_FLG) {
> + /* audio reset audio FIFO */
> + reg = io_read(sd, REG_SUS_STATUS);
> + if ((reg & MASK_SUS_STATUS) == LAST_STATE_REACHED) {
> + reg = io_read(sd, REG_HDMI_INFO_RST);
> + reg |= MASK_SR_FIFO_FIFO_CTRL;
> + io_write(sd, REG_HDMI_INFO_RST, reg);
> + reg &= ~MASK_SR_FIFO_FIFO_CTRL;
> + io_write(sd, REG_HDMI_INFO_RST, reg);
> + /* reset channel status IT if present */
> + source &= ~(MASK_CH_STATE);
> + }
> + }
> + if (source & MASK_AUDIO_FREQ_FLG) {
> + static const int freq[] = {
> + 0, 32000, 44100, 48000, 88200, 96000, 176400, 192000
> + };
> +
> + reg = io_read(sd, REG_AUDIO_FREQ);
> + state->audio_samplerate = freq[reg & 7];
> + v4l_info(state->client, "Audio Frequency Change: %dHz\n",
> + state->audio_samplerate);
> + }
> + if (source & MASK_AUDIO_FLG) {
> + reg = io_read(sd, REG_AUDIO_FLAGS);
> + if (reg & BIT(AUDCFG_TYPE_DST))
> + state->audio_type = AUDCFG_TYPE_DST;
> + if (reg & BIT(AUDCFG_TYPE_OBA))
> + state->audio_type = AUDCFG_TYPE_OBA;
> + if (reg & BIT(AUDCFG_TYPE_HBR))
> + state->audio_type = AUDCFG_TYPE_HBR;
> + if (reg & BIT(AUDCFG_TYPE_PCM))
> + state->audio_type = AUDCFG_TYPE_PCM;
> + v4l_info(state->client, "Audio Type: %s\n",
> + audtype_names[state->audio_type]);
> + }
> +}
> +
> +static void tda1997x_irq_hdcp(struct tda1997x_state *state, u8 *flags)
> +{
> + struct v4l2_subdev *sd = &state->sd;
> + u8 reg, source;
> +
> + source = io_read(sd, REG_INT_FLG_CLR_HDCP);
> + io_write(sd, REG_INT_FLG_CLR_HDCP, source);
> +
> + /* reset MTP in use flag if set */
> + if (source & MASK_HDCP_MTP)
> + state->mptrw_in_progress = 0;
> + if (source & MASK_STATE_C5) {
> + /* REPEATER: mask AUDIO and IF irqs to avoid IF during auth */
> + reg = io_read(sd, REG_INT_MASK_TOP);
> + reg &= ~(INTERRUPT_AUDIO | INTERRUPT_INFO);
> + io_write(sd, REG_INT_MASK_TOP, reg);
> + *flags &= (INTERRUPT_AUDIO | INTERRUPT_INFO);
> + }
> +}
> +
> +static irqreturn_t tda1997x_isr_thread(int irq, void *d)
> +{
> + struct tda1997x_state *state = d;
> + struct v4l2_subdev *sd = &state->sd;
> + u8 flags;
> +
> + mutex_lock(&state->lock);
> + do {
> + /* read interrupt flags */
> + flags = io_read(sd, REG_INT_FLG_CLR_TOP);
> + if (flags == 0)
> + break;
> +
> + /* SUS interrupt source (Input activity events) */
> + if (flags & INTERRUPT_SUS)
> + tda1997x_irq_sus(state, &flags);
> + /* DDC interrupt source (Display Data Channel) */
> + else if (flags & INTERRUPT_DDC)
> + tda1997x_irq_ddc(state, &flags);
> + /* RATE interrupt source (Digital Input activity) */
> + else if (flags & INTERRUPT_RATE)
> + tda1997x_irq_rate(state, &flags);
> + /* Infoframe change interrupt */
> + else if (flags & INTERRUPT_INFO)
> + tda1997x_irq_info(state, &flags);
> + /* Audio interrupt source:
> + * freq change, DST,OBA,HBR,ASP flags, mute, FIFO err
> + */
> + else if (flags & INTERRUPT_AUDIO)
> + tda1997x_irq_audio(state, &flags);
> + /* HDCP interrupt source (content protection) */
> + if (flags & INTERRUPT_HDCP)
> + tda1997x_irq_hdcp(state, &flags);
> + } while (flags != 0);
> + mutex_unlock(&state->lock);
> +
> + return IRQ_HANDLED;
> +}
> +
> +static bool tda1997x_check_dv_timings(const struct v4l2_dv_timings *timings,
> + void *hdl)
> +{
> + unsigned int i;
> +
> + for (i = 0; i < ARRAY_SIZE(tda1997x_hdmi_modes); i++) {
> + if (v4l2_match_dv_timings(timings, &tda1997x_hdmi_modes[i],
> + 0, false))
> + return true;
> + }
> +
> + return false;
> +}
> +
> +/* -----------------------------------------------------------------------------
> + * v4l2_subdev_video_ops
> + */
> +
> +static int
> +tda1997x_g_input_status(struct v4l2_subdev *sd, u32 *status)
> +{
> + struct tda1997x_state *state = to_state(sd);
> +
> + mutex_lock(&state->lock);
> + if (state->detected_timings)
> + *status = 0;
> + else
> + *status |= V4L2_IN_ST_NO_SIGNAL;
> + mutex_unlock(&state->lock);
> +
> + return 0;
> +};
> +
> +static int tda1997x_s_dv_timings(struct v4l2_subdev *sd,
> + struct v4l2_dv_timings *timings)
> +{
> + struct tda1997x_state *state = to_state(sd);
> + int ret;
> +
> + v4l_dbg(1, debug, state->client, "%s\n", __func__);
> + if (!timings)
> + return -EINVAL;
> +
> + if (v4l2_match_dv_timings(&state->timings, timings, 0, false))
> + return 0; /* no changes */
> +
> + if (!v4l2_valid_dv_timings(timings, &tda1997x_dv_timings_cap,
> + tda1997x_check_dv_timings, state))
> + return -ERANGE;
> +
> + mutex_lock(&state->lock);
> + state->timings = *timings;
> + /* setup frame detection window and VHREF timing generator */
> + ret = tda1997x_configure_vhref(sd);
> + if (ret)
> + goto error;
> + /* configure colorspace conversion */
> + ret = tda1997x_configure_csc(sd);
> + if (ret)
> + goto error;
> + mutex_unlock(&state->lock);
> +
> + return 0;
> +
> +error:
> + mutex_unlock(&state->lock);
> + return ret;
> +}
> +
> +static int tda1997x_g_dv_timings(struct v4l2_subdev *sd,
> + struct v4l2_dv_timings *timings)
> +{
> + struct tda1997x_state *state = to_state(sd);
> +
> + v4l_dbg(1, debug, state->client, "%s\n", __func__);
> + if (!timings)
> + return -EINVAL;
> +
> + mutex_lock(&state->lock);
> + *timings = state->timings;
> + mutex_unlock(&state->lock);
> +
> + return 0;
> +}
> +
> +static int tda1997x_query_dv_timings(struct v4l2_subdev *sd,
> + struct v4l2_dv_timings *timings)
> +{
> + struct tda1997x_state *state = to_state(sd);
> + int ret;
> +
> + v4l_dbg(1, debug, state->client, "%s\n", __func__);
> + if (!timings)
> + return -EINVAL;
> +
> + memset(timings, 0, sizeof(struct v4l2_dv_timings));
> + mutex_lock(&state->lock);
> + ret = tda1997x_detect_std(state);
> + if (!ret)
> + *timings = *state->detected_timings;
> + mutex_unlock(&state->lock);
> +
> + return ret;
> +}
> +
> +static int tda1997x_s_stream(struct v4l2_subdev *sd, int enable)
> +{
> + struct tda1997x_state *state = to_state(sd);
> +
> + v4l_dbg(1, debug, state->client, "%s %d\n", __func__, enable);
> + mutex_lock(&state->lock);
> + if (!state->detected_timings)
> + v4l_dbg(1, debug, state->client, "Invalid HDMI signal\n");
> + mutex_unlock(&state->lock);
> +
> + return 0;
> +}
> +
> +static const struct v4l2_subdev_video_ops tda1997x_video_ops = {
> + .g_input_status = tda1997x_g_input_status,
> + .s_dv_timings = tda1997x_s_dv_timings,
> + .g_dv_timings = tda1997x_g_dv_timings,
> + .query_dv_timings = tda1997x_query_dv_timings,
> + .s_stream = tda1997x_s_stream,
> +};
> +
> +
> +/* -----------------------------------------------------------------------------
> + * v4l2_subdev_pad_ops
> + */
> +
> +static int tda1997x_enum_mbus_code(struct v4l2_subdev *sd,
> + struct v4l2_subdev_pad_config *cfg,
> + struct v4l2_subdev_mbus_code_enum *code)
> +{
> + struct tda1997x_state *state = to_state(sd);
> +
> + v4l_dbg(1, debug, state->client, "%s %d/%d\n", __func__,
> + code->index, ARRAY_SIZE(state->mbus_codes));
> + if (code->index >= ARRAY_SIZE(state->mbus_codes))
> + return -EINVAL;
> +
> + if (!state->mbus_codes[code->index])
> + return -EINVAL;
> +
> + code->code = state->mbus_codes[code->index];
> +
> + return 0;
> +}
> +
> +static int tda1997x_fill_format(struct tda1997x_state *state,
> + struct v4l2_mbus_framefmt *format)
> +{
> + const struct v4l2_bt_timings *bt;
> +
> + v4l_dbg(1, debug, state->client, "%s\n", __func__);
> +
> + if (!state->detected_timings)
> + return -EINVAL;
> +
> + memset(format, 0, sizeof(*format));
> + bt = &state->detected_timings->bt;
> + format->width = bt->width;
> + format->height = bt->height;
> + format->colorspace = state->colorimetry.colorspace;
> + format->field = (bt->interlaced) ?
> + V4L2_FIELD_SEQ_TB : V4L2_FIELD_NONE;
> +
> + return 0;
> +}
> +
> +static int tda1997x_get_format(struct v4l2_subdev *sd,
> + struct v4l2_subdev_pad_config *cfg,
> + struct v4l2_subdev_format *format)
> +{
> + struct tda1997x_state *state = to_state(sd);
> +
> + v4l_dbg(1, debug, state->client, "%s pad=%d which=%d\n",
> + __func__, format->pad, format->which);
> + if (format->pad != TDA1997X_PAD_SOURCE)
> + return -EINVAL;
> +
> + tda1997x_fill_format(state, &format->format);
> +
> + if (format->which == V4L2_SUBDEV_FORMAT_TRY) {
> + struct v4l2_mbus_framefmt *fmt;
> +
> + fmt = v4l2_subdev_get_try_format(sd, cfg, format->pad);
> + format->format.code = fmt->code;

As we discovered this failed with v4l2-compliance. I did some digging
and there are two options:

1) Implement the init_cfg pad op to initialize fmt->code with a valid
code.

2) If you see here that fmt->code == 0, then change it to a valid code.

I think 2 is easiest but 1 is a bit cleaner.

When the filehandle is opened the cfg array is zeroed, so that's why
fmt->code is 0 initially.

> + } else
> + format->format.code = state->mbus_code;
> +
> + return 0;
> +}
> +
> +static int tda1997x_set_format(struct v4l2_subdev *sd,
> + struct v4l2_subdev_pad_config *cfg,
> + struct v4l2_subdev_format *format)
> +{
> + struct tda1997x_state *state = to_state(sd);
> + u32 code = format->format.code;
> +
> + v4l_dbg(1, debug, state->client, "%s pad=%d which=%d fmt=0x%x\n",
> + __func__, format->pad, format->which, format->format.code);
> + if (format->pad != TDA1997X_PAD_SOURCE)
> + return -EINVAL;
> +
> + tda1997x_fill_format(state, &format->format);
> + format->format.code = code;

This doesn't check if the code is valid! If it is not a known code, then
just pick the first code from the list.

> +
> + if (format->which == V4L2_SUBDEV_FORMAT_TRY) {
> + struct v4l2_mbus_framefmt *fmt;
> +
> + fmt = v4l2_subdev_get_try_format(sd, cfg, format->pad);
> + *fmt = format->format;
> + } else {
> + int ret = tda1997x_setup_format(state, format->format.code);
> + if (ret)
> + return ret;
> + /* mbus_code has changed - re-configure csc/vidout */
> + tda1997x_configure_csc(sd);
> + tda1997x_configure_vidout(state);
> + }
> +
> + return 0;
> +}
> +
> +static int tda1997x_get_edid(struct v4l2_subdev *sd, struct v4l2_edid *edid)
> +{
> + struct tda1997x_state *state = to_state(sd);
> +
> + v4l_dbg(1, debug, state->client, "%s pad=%d\n", __func__, edid->pad);
> + memset(edid->reserved, 0, sizeof(edid->reserved));
> +
> + if (!state->edid.present)
> + return -ENODATA;
> +
> + if (edid->start_block == 0 && edid->blocks == 0) {
> + edid->blocks = state->edid.blocks;
> + return 0;
> + }
> +
> + if (edid->start_block >= state->edid.blocks)
> + return -EINVAL;
> +
> + if (edid->start_block + edid->blocks > state->edid.blocks)
> + edid->blocks = state->edid.blocks - edid->start_block;
> +
> + memcpy(edid->edid, state->edid.edid + edid->start_block * 128,
> + edid->blocks * 128);
> +
> + return 0;
> +}
> +
> +static int tda1997x_set_edid(struct v4l2_subdev *sd, struct v4l2_edid *edid)
> +{
> + struct tda1997x_state *state = to_state(sd);
> + int i;
> +
> + v4l_dbg(1, debug, state->client, "%s pad=%d\n", __func__, edid->pad);
> + memset(edid->reserved, 0, sizeof(edid->reserved));
> +
> + if (edid->start_block != 0)
> + return -EINVAL;
> +
> + if (edid->blocks == 0) {
> + state->edid.blocks = 0;
> + state->edid.present = 0;
> + tda1997x_disable_edid(sd);
> + return 0;
> + }
> +
> + if (edid->blocks > 2) {
> + edid->blocks = 2;
> + return -E2BIG;
> + }
> +
> + tda1997x_disable_edid(sd);
> +
> + /* write base EDID */
> + for (i = 0; i < 128; i++)
> + io_write(sd, REG_EDID_IN_BYTE0 + i, edid->edid[i]);
> +
> + /* write CEA Extension */
> + for (i = 0; i < 128; i++)
> + io_write(sd, REG_EDID_IN_BYTE128 + i, edid->edid[i+128]);
> +
> + tda1997x_enable_edid(sd);
> +
> + return 0;
> +}
> +
> +static int tda1997x_get_dv_timings_cap(struct v4l2_subdev *sd,
> + struct v4l2_dv_timings_cap *cap)
> +{

Needs a pad check.

> + *cap = tda1997x_dv_timings_cap;
> + return 0;
> +}
> +
> +static int tda1997x_enum_dv_timings(struct v4l2_subdev *sd,
> + struct v4l2_enum_dv_timings *timings)
> +{
> + struct tda1997x_state *state = to_state(sd);
> +

Ditto.

> + return v4l2_enum_dv_timings_cap(timings, &tda1997x_dv_timings_cap,
> + tda1997x_check_dv_timings, state);
> +}
> +
> +static const struct v4l2_subdev_pad_ops tda1997x_pad_ops = {
> + .enum_mbus_code = tda1997x_enum_mbus_code,
> + .get_fmt = tda1997x_get_format,
> + .set_fmt = tda1997x_set_format,
> + .get_edid = tda1997x_get_edid,
> + .set_edid = tda1997x_set_edid,
> + .dv_timings_cap = tda1997x_get_dv_timings_cap,
> + .enum_dv_timings = tda1997x_enum_dv_timings,
> +};
> +
> +/* -----------------------------------------------------------------------------
> + * v4l2_subdev_core_ops
> + */
> +
> +static int tda1997x_log_infoframe(struct v4l2_subdev *sd, int addr)
> +{
> + struct tda1997x_state *state = to_state(sd);
> + union hdmi_infoframe frame;
> + u8 buffer[40];
> + int len, err;
> +
> + /* read data */
> + len = io_readn(sd, addr, sizeof(buffer), buffer);
> + v4l2_dbg(1, debug, sd, "infoframe: addr=%d len=%d\n", addr, len);
> + err = hdmi_infoframe_unpack(&frame, buffer);
> + if (err) {
> + v4l_err(state->client,
> + "failed parsing %d byte infoframe: 0x%04x/0x%02x\n",
> + len, addr, buffer[0]);
> + return err;
> + }
> + hdmi_infoframe_log(KERN_INFO, &state->client->dev, &frame);
> +
> + return 0;
> +}
> +
> +static int tda1997x_log_status(struct v4l2_subdev *sd)
> +{
> + struct tda1997x_state *state = to_state(sd);
> + struct v4l2_dv_timings timings;
> + struct hdmi_avi_infoframe *avi = &state->avi_infoframe;
> +
> + v4l2_info(sd, "-----Chip status-----\n");
> + v4l2_info(sd, "Chip: %s N%d\n", state->info->name,
> + state->chip_revision + 1);
> + v4l2_info(sd, "EDID Enabled: %s\n", state->edid.present ? "yes" : "no");
> +
> + v4l2_info(sd, "-----Signal status-----\n");
> + v4l2_info(sd, "Cable detected (+5V power): %s\n",
> + tda1997x_detect_tx_5v(sd) ? "yes" : "no");
> + v4l2_info(sd, "HPD detected: %s\n",
> + tda1997x_detect_tx_hpd(sd) ? "yes" : "no");
> +
> + v4l2_info(sd, "-----Video Timings-----\n");
> + if (tda1997x_query_dv_timings(sd, &timings))
> + v4l2_info(sd, "No video detected\n");
> + else
> + v4l2_print_dv_timings(sd->name, "Detected format: ",
> + &timings, true);
> + v4l2_print_dv_timings(sd->name, "Configured format: ",
> + &state->timings, true);
> +
> + v4l2_info(sd, "-----Color space-----\n");
> + v4l2_info(sd, "Input color space: %s %s %s",
> + hdmi_colorspace_names[avi->colorspace],
> + (avi->colorspace == HDMI_COLORSPACE_RGB) ? "" :
> + hdmi_colorimetry_names[avi->colorimetry],
> + v4l2_quantization_names[state->colorimetry.quantization]);
> + v4l2_info(sd, "Output color space: %s",
> + vidfmt_names[state->vid_fmt]);
> + v4l2_info(sd, "Color space conversion: %s", state->conv ?
> + state->conv->name : "None");
> +
> + v4l2_info(sd, "-----Audio-----\n");
> + if (state->audio_channels) {
> + v4l2_info(sd, "audio: %dch %dHz\n", state->audio_channels,
> + state->audio_samplerate);
> + } else {
> + v4l2_info(sd, "audio: none\n");
> + }
> +
> + v4l2_info(sd, "-----Infoframes-----\n");
> + tda1997x_log_infoframe(sd, AUD_IF);
> + tda1997x_log_infoframe(sd, SPD_IF);
> + tda1997x_log_infoframe(sd, AVI_IF);
> +
> + return 0;
> +}
> +
> +static int tda1997x_subscribe_event(struct v4l2_subdev *sd,
> + struct v4l2_fh *fh,
> + struct v4l2_event_subscription *sub)
> +{
> + switch (sub->type) {
> + case V4L2_EVENT_SOURCE_CHANGE:
> + return v4l2_src_change_event_subdev_subscribe(sd, fh, sub);
> + case V4L2_EVENT_CTRL:
> + return v4l2_ctrl_subdev_subscribe_event(sd, fh, sub);
> + default:
> + return -EINVAL;
> + }
> +}
> +
> +static const struct v4l2_subdev_core_ops tda1997x_core_ops = {
> + .log_status = tda1997x_log_status,
> + .subscribe_event = tda1997x_subscribe_event,
> + .unsubscribe_event = v4l2_event_subdev_unsubscribe,
> +};
> +
> +/* -----------------------------------------------------------------------------
> + * v4l2_subdev_ops
> + */
> +
> +static const struct v4l2_subdev_ops tda1997x_subdev_ops = {
> + .core = &tda1997x_core_ops,
> + .video = &tda1997x_video_ops,
> + .pad = &tda1997x_pad_ops,
> +};
> +
> +/* -----------------------------------------------------------------------------
> + * v4l2_controls
> + */
> +
> +static int tda1997x_s_ctrl(struct v4l2_ctrl *ctrl)
> +{
> + struct v4l2_subdev *sd = to_sd(ctrl);
> + struct tda1997x_state *state = to_state(sd);
> +
> + switch (ctrl->id) {
> + /* allow overriding the default RGB quantization range */
> + case V4L2_CID_DV_RX_RGB_RANGE:
> + state->rgb_quantization_range = ctrl->val;
> + tda1997x_configure_csc(sd);
> + return 0;
> + }
> +
> + return -EINVAL;
> +};
> +
> +static int tda1997x_g_volatile_ctrl(struct v4l2_ctrl *ctrl)
> +{
> + struct v4l2_subdev *sd = to_sd(ctrl);
> + struct tda1997x_state *state = to_state(sd);
> +
> + if (ctrl->id == V4L2_CID_DV_RX_IT_CONTENT_TYPE) {
> + ctrl->val = state->avi_infoframe.content_type;
> + return 0;
> + }
> + return -EINVAL;
> +};
> +
> +static const struct v4l2_ctrl_ops tda1997x_ctrl_ops = {
> + .s_ctrl = tda1997x_s_ctrl,
> + .g_volatile_ctrl = tda1997x_g_volatile_ctrl,
> +};
> +
> +static int tda1997x_core_init(struct v4l2_subdev *sd)
> +{
> + struct tda1997x_state *state = to_state(sd);
> + struct tda1997x_platform_data *pdata = &state->pdata;
> + u8 reg;
> + int i;
> +
> + /* disable HPD */
> + io_write(sd, REG_HPD_AUTO_CTRL, HPD_AUTO_HPD_UNSEL);
> + if (state->chip_revision == 0) {
> + io_write(sd, REG_MAN_SUS_HDMI_SEL, MAN_DIS_HDCP | MAN_RST_HDCP);
> + io_write(sd, REG_CGU_DBG_SEL, 1 << CGU_DBG_CLK_SEL_SHIFT);
> + }
> +
> + /* reset infoframe at end of start-up-sequencer */
> + io_write(sd, REG_SUS_SET_RGB2, 0x06);
> + io_write(sd, REG_SUS_SET_RGB3, 0x06);
> +
> + /* Enable TMDS pull-ups */
> + io_write(sd, REG_RT_MAN_CTRL, RT_MAN_CTRL_RT |
> + RT_MAN_CTRL_RT_B | RT_MAN_CTRL_RT_A);
> +
> + /* enable sync measurement timing */
> + tda1997x_cec_write(sd, REG_PWR_CONTROL & 0xff, 0x04);
> + /* adjust CEC clock divider */
> + tda1997x_cec_write(sd, REG_OSC_DIVIDER & 0xff, 0x03);
> + tda1997x_cec_write(sd, REG_EN_OSC_PERIOD_LSB & 0xff, 0xa0);
> + io_write(sd, REG_TIMER_D, 0x54);
> + /* enable power switch */
> + reg = tda1997x_cec_read(sd, REG_CONTROL & 0xff);
> + reg |= 0x20;
> + tda1997x_cec_write(sd, REG_CONTROL & 0xff, reg);
> + mdelay(50);
> +
> + /* read the chip version */
> + reg = io_read(sd, REG_VERSION);
> + /* get the chip configuration */
> + reg = io_read(sd, REG_CMTP_REG10);
> +
> + /* enable interrupts we care about */
> + io_write(sd, REG_INT_MASK_TOP,
> + INTERRUPT_HDCP | INTERRUPT_AUDIO | INTERRUPT_INFO |
> + INTERRUPT_RATE | INTERRUPT_SUS);
> + /* config_mtp,fmt,sus_end,sus_st */
> + io_write(sd, REG_INT_MASK_SUS, MASK_MPT | MASK_FMT | MASK_SUS_END);
> + /* rate stability change for inputs A/B */
> + io_write(sd, REG_INT_MASK_RATE, MASK_RATE_B_ST | MASK_RATE_A_ST);
> + /* aud,spd,avi*/
> + io_write(sd, REG_INT_MASK_INFO,
> + MASK_AUD_IF | MASK_SPD_IF | MASK_AVI_IF);
> + /* audio_freq,audio_flg,mute_flg,fifo_err */
> + io_write(sd, REG_INT_MASK_AUDIO,
> + MASK_AUDIO_FREQ_FLG | MASK_AUDIO_FLG | MASK_MUTE_FLG |
> + MASK_ERROR_FIFO_PT);
> + /* HDCP C5 state reached */
> + io_write(sd, REG_INT_MASK_HDCP, MASK_STATE_C5);
> + /* 5V detect and HDP pulse end */
> + io_write(sd, REG_INT_MASK_DDC, MASK_DET_5V);
> + /* don't care about AFE/MODE */
> + io_write(sd, REG_INT_MASK_AFE, 0);
> + io_write(sd, REG_INT_MASK_MODE, 0);
> +
> + /* clear all interrupts */
> + io_write(sd, REG_INT_FLG_CLR_TOP, 0xff);
> + io_write(sd, REG_INT_FLG_CLR_SUS, 0xff);
> + io_write(sd, REG_INT_FLG_CLR_DDC, 0xff);
> + io_write(sd, REG_INT_FLG_CLR_RATE, 0xff);
> + io_write(sd, REG_INT_FLG_CLR_MODE, 0xff);
> + io_write(sd, REG_INT_FLG_CLR_INFO, 0xff);
> + io_write(sd, REG_INT_FLG_CLR_AUDIO, 0xff);
> + io_write(sd, REG_INT_FLG_CLR_HDCP, 0xff);
> + io_write(sd, REG_INT_FLG_CLR_AFE, 0xff);
> +
> + /* init TMDS equalizer */
> + if (state->chip_revision == 0)
> + io_write(sd, REG_CGU_DBG_SEL, 1 << CGU_DBG_CLK_SEL_SHIFT);
> + io_write24(sd, REG_CLK_MIN_RATE, CLK_MIN_RATE);
> + io_write24(sd, REG_CLK_MAX_RATE, CLK_MAX_RATE);
> + if (state->chip_revision == 0)
> + io_write(sd, REG_WDL_CFG, WDL_CFG_VAL);
> + /* DC filter */
> + io_write(sd, REG_DEEP_COLOR_CTRL, DC_FILTER_VAL);
> + /* disable test pattern */
> + io_write(sd, REG_SVC_MODE, 0x00);
> + /* update HDMI INFO CTRL */
> + io_write(sd, REG_INFO_CTRL, 0xff);
> + /* write HDMI INFO EXCEED value */
> + io_write(sd, REG_INFO_EXCEED, 3);
> +
> + if (state->chip_revision == 0)
> + tda1997x_reset_n1(state);
> +
> + /*
> + * No HDCP acknowledge when HDCP is disabled
> + * and reset SUS to force format detection
> + */
> + tda1997x_hdmi_info_reset(sd, NACK_HDCP, true);
> +
> + /* Set HPD low */
> + tda1997x_manual_hpd(sd, HPD_LOW_BP);
> +
> + /* Configure receiver capabilities */
> + io_write(sd, REG_HDCP_BCAPS, HDCP_HDMI | HDCP_FAST_REAUTH);
> +
> + /* Configure HDMI: Auto HDCP mode, packet controlled mute */
> + reg = HDMI_CTRL_MUTE_AUTO << HDMI_CTRL_MUTE_SHIFT;
> + reg |= HDMI_CTRL_HDCP_AUTO << HDMI_CTRL_HDCP_SHIFT;
> + io_write(sd, REG_HDMI_CTRL, reg);
> +
> + /* reset start-up-sequencer to force format detection */
> + tda1997x_hdmi_info_reset(sd, 0, true);
> +
> + /* disable matrix conversion */
> + reg = io_read(sd, REG_VDP_CTRL);
> + reg |= VDP_CTRL_MATRIX_BP;
> + io_write(sd, REG_VDP_CTRL, reg);
> +
> + /* set video output mode */
> + tda1997x_configure_vidout(state);
> +
> + /* configure video output port */
> + for (i = 0; i < 9; i++) {
> + v4l_dbg(1, debug, state->client, "vidout_cfg[%d]=0x%02x\n", i,
> + pdata->vidout_port_cfg[i]);
> + io_write(sd, REG_VP35_32_CTRL + i, pdata->vidout_port_cfg[i]);
> + }
> +
> + /* configure audio output port */
> + tda1997x_configure_audout(sd, 0);
> +
> + /* configure audio clock freq */
> + switch (pdata->audout_mclk_fs) {
> + case 512:
> + reg = AUDIO_CLOCK_SEL_512FS;
> + break;
> + case 256:
> + reg = AUDIO_CLOCK_SEL_256FS;
> + break;
> + case 128:
> + reg = AUDIO_CLOCK_SEL_128FS;
> + break;
> + case 64:
> + reg = AUDIO_CLOCK_SEL_64FS;
> + break;
> + case 32:
> + reg = AUDIO_CLOCK_SEL_32FS;
> + break;
> + default:
> + reg = AUDIO_CLOCK_SEL_16FS;
> + break;
> + }
> + io_write(sd, REG_AUDIO_CLOCK, reg);
> +
> + /* reset advanced infoframes (ISRC1/ISRC2/ACP) */
> + tda1997x_hdmi_info_reset(sd, RESET_AI, false);
> + /* reset infoframe */
> + tda1997x_hdmi_info_reset(sd, RESET_IF, false);
> + /* reset audio infoframes */
> + tda1997x_hdmi_info_reset(sd, RESET_AUDIO, false);
> + /* reset gamut */
> + tda1997x_hdmi_info_reset(sd, RESET_GAMUT, false);
> +
> + /* get initial HDMI status */
> + state->hdmi_status = io_read(sd, REG_HDMI_FLAGS);
> +
> + return 0;
> +}
> +
> +static int tda1997x_set_power(struct tda1997x_state *state, bool on)
> +{
> + int ret = 0;
> +
> + if (on) {
> + ret = regulator_bulk_enable(TDA1997X_NUM_SUPPLIES,
> + state->supplies);
> + msleep(300);
> + } else {
> + ret = regulator_bulk_disable(TDA1997X_NUM_SUPPLIES,
> + state->supplies);
> + }
> +
> + return ret;
> +}
> +
> +static const struct i2c_device_id tda1997x_i2c_id[] = {
> + {"tda19971", (kernel_ulong_t)&tda1997x_chip_info[TDA19971]},
> + {"tda19973", (kernel_ulong_t)&tda1997x_chip_info[TDA19973]},
> + { },
> +};
> +MODULE_DEVICE_TABLE(i2c, tda1997x_i2c_id);
> +
> +static const struct of_device_id tda1997x_of_id[] __maybe_unused = {
> + { .compatible = "nxp,tda19971", .data = &tda1997x_chip_info[TDA19971] },
> + { .compatible = "nxp,tda19973", .data = &tda1997x_chip_info[TDA19973] },
> + { },
> +};
> +MODULE_DEVICE_TABLE(of, tda1997x_of_id);
> +
> +static int tda1997x_parse_dt(struct tda1997x_state *state)
> +{
> + struct tda1997x_platform_data *pdata = &state->pdata;
> + struct v4l2_fwnode_endpoint bus_cfg;
> + struct device_node *ep;
> + struct device_node *np;
> + unsigned int flags;
> + const char *str;
> + int ret;
> + u32 v;
> +
> + /*
> + * setup default values:
> + * - HREF: active high from start to end of row
> + * - VS: Vertical Sync active high at beginning of frame
> + * - DE: Active high when data valid
> + * - A_CLK: 128*Fs
> + */
> + pdata->vidout_sel_hs = HS_HREF_SEL_HREF_VHREF;
> + pdata->vidout_sel_vs = VS_VREF_SEL_VREF_HDMI;
> + pdata->vidout_sel_de = DE_FREF_SEL_DE_VHREF;
> +
> + np = state->client->dev.of_node;
> + ep = of_graph_get_next_endpoint(np, NULL);
> + if (!ep)
> + return -EINVAL;
> +
> + ret = v4l2_fwnode_endpoint_parse(of_fwnode_handle(ep), &bus_cfg);
> + if (ret) {
> + of_node_put(ep);
> + return ret;
> + }
> + of_node_put(ep);
> + pdata->vidout_bus_type = bus_cfg.bus_type;
> +
> + /* polarity of HS/VS/DE */
> + flags = bus_cfg.bus.parallel.flags;
> + if (flags & V4L2_MBUS_HSYNC_ACTIVE_LOW)
> + pdata->vidout_inv_hs = 1;
> + if (flags & V4L2_MBUS_VSYNC_ACTIVE_LOW)
> + pdata->vidout_inv_vs = 1;
> + if (flags & V4L2_MBUS_DATA_ACTIVE_LOW)
> + pdata->vidout_inv_de = 1;
> + pdata->vidout_bus_width = bus_cfg.bus.parallel.bus_width;
> +
> + /* video output port config */
> + ret = of_property_count_u32_elems(np, "nxp,vidout-portcfg");
> + if (ret > 0) {
> + u32 reg, val, i;
> +
> + for (i = 0; i < ret / 2 && i < 9; i++) {
> + of_property_read_u32_index(np, "nxp,vidout-portcfg",
> + i * 2, &reg);
> + of_property_read_u32_index(np, "nxp,vidout-portcfg",
> + i * 2 + 1, &val);
> + if (reg < 9)
> + pdata->vidout_port_cfg[reg] = val;
> + }
> + } else {
> + v4l_err(state->client, "nxp,vidout-portcfg missing\n");
> + return -EINVAL;
> + }
> +
> + /* default to channel layout dictated by packet header */
> + pdata->audout_layoutauto = true;
> +
> + pdata->audout_format = AUDFMT_TYPE_DISABLED;
> + if (!of_property_read_string(np, "nxp,audout-format", &str)) {
> + if (strcmp(str, "i2s") == 0)
> + pdata->audout_format = AUDFMT_TYPE_I2S;
> + else if (strcmp(str, "spdif") == 0)
> + pdata->audout_format = AUDFMT_TYPE_SPDIF;
> + else {
> + v4l_err(state->client, "nxp,audout-format invalid\n");
> + return -EINVAL;
> + }
> + if (!of_property_read_u32(np, "nxp,audout-layout", &v)) {
> + switch (v) {
> + case 0:
> + case 1:
> + break;
> + default:
> + v4l_err(state->client,
> + "nxp,audout-layout invalid\n");
> + return -EINVAL;
> + }
> + pdata->audout_layout = v;
> + }
> + if (!of_property_read_u32(np, "nxp,audout-width", &v)) {
> + switch (v) {
> + case 16:
> + case 32:
> + break;
> + default:
> + v4l_err(state->client,
> + "nxp,audout-width invalid\n");
> + return -EINVAL;
> + }
> + pdata->audout_width = v;
> + }
> + if (!of_property_read_u32(np, "nxp,audout-mclk-fs", &v)) {
> + switch (v) {
> + case 512:
> + case 256:
> + case 128:
> + case 64:
> + case 32:
> + case 16:
> + break;
> + default:
> + v4l_err(state->client,
> + "nxp,audout-mclk-fs invalid\n");
> + return -EINVAL;
> + }
> + pdata->audout_mclk_fs = v;
> + }
> + }
> +
> + return 0;
> +}
> +
> +static int tda1997x_get_regulators(struct tda1997x_state *state)
> +{
> + int i;
> +
> + for (i = 0; i < TDA1997X_NUM_SUPPLIES; i++)
> + state->supplies[i].supply = tda1997x_supply_name[i];
> +
> + return devm_regulator_bulk_get(&state->client->dev,
> + TDA1997X_NUM_SUPPLIES,
> + state->supplies);
> +}
> +
> +static int tda1997x_identify_module(struct tda1997x_state *state)
> +{
> + struct v4l2_subdev *sd = &state->sd;
> + enum tda1997x_type type;
> + u8 reg;
> +
> + /* Read chip configuration*/
> + reg = io_read(sd, REG_CMTP_REG10);
> + state->tmdsb_clk = (reg >> 6) & 0x01; /* use tmds clock B_inv for B */
> + state->tmdsb_soc = (reg >> 5) & 0x01; /* tmds of input B */
> + state->port_30bit = (reg >> 2) & 0x03; /* 30bit vs 24bit */
> + state->output_2p5 = (reg >> 1) & 0x01; /* output supply 2.5v */
> + switch ((reg >> 4) & 0x03) {
> + case 0x00:
> + type = TDA19971;
> + break;
> + case 0x02:
> + case 0x03:
> + type = TDA19973;
> + break;
> + default:
> + dev_err(&state->client->dev, "unsupported chip ID\n");
> + return -EIO;
> + }
> + if (state->info->type != type) {
> + dev_err(&state->client->dev, "chip id mismatch\n");
> + return -EIO;
> + }
> +
> + /* read chip revision */
> + state->chip_revision = io_read(sd, REG_CMTP_REG11);
> +
> + return 0;
> +}
> +
> +static const struct media_entity_operations tda1997x_media_ops = {
> + .link_validate = v4l2_subdev_link_validate,
> +};
> +
> +
> +/* -----------------------------------------------------------------------------
> + * HDMI Audio Codec
> + */
> +
> +/* refine sample-rate based on HDMI source */
> +static int tda1997x_pcm_startup(struct snd_pcm_substream *substream,
> + struct snd_soc_dai *dai)
> +{
> + struct tda1997x_state *state = snd_soc_dai_get_drvdata(dai);
> + struct snd_soc_codec *codec = dai->codec;
> + struct snd_pcm_runtime *rtd = substream->runtime;
> + int rate, err;
> +
> + rate = state->audio_samplerate;
> + err = snd_pcm_hw_constraint_minmax(rtd, SNDRV_PCM_HW_PARAM_RATE,
> + rate, rate);
> + if (err < 0) {
> + dev_err(codec->dev, "failed to constrain samplerate to %dHz\n",
> + rate);
> + return err;
> + }
> + dev_info(codec->dev, "set samplerate constraint to %dHz\n", rate);
> +
> + return 0;
> +}
> +
> +static const struct snd_soc_dai_ops tda1997x_dai_ops = {
> + .startup = tda1997x_pcm_startup,
> +};
> +
> +static struct snd_soc_dai_driver tda1997x_audio_dai = {
> + .name = "tda1997x",
> + .capture = {
> + .stream_name = "Capture",
> + .channels_min = 2,
> + .channels_max = 8,
> + .rates = SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 |
> + SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_88200 |
> + SNDRV_PCM_RATE_96000 | SNDRV_PCM_RATE_176400 |
> + SNDRV_PCM_RATE_192000,
> + },
> + .ops = &tda1997x_dai_ops,
> +};
> +
> +static int tda1997x_codec_probe(struct snd_soc_codec *codec)
> +{
> + return 0;
> +}
> +
> +static int tda1997x_codec_remove(struct snd_soc_codec *codec)
> +{
> + return 0;
> +}
> +
> +static struct snd_soc_codec_driver tda1997x_codec_driver = {
> + .probe = tda1997x_codec_probe,
> + .remove = tda1997x_codec_remove,
> + .reg_word_size = sizeof(u16),
> +};
> +
> +static int tda1997x_probe(struct i2c_client *client,
> + const struct i2c_device_id *id)
> +{
> + struct tda1997x_state *state;
> + struct tda1997x_platform_data *pdata;
> + struct v4l2_subdev *sd;
> + struct v4l2_ctrl_handler *hdl;
> + struct v4l2_ctrl *ctrl;
> + static const struct v4l2_dv_timings cea1920x1080 =
> + V4L2_DV_BT_CEA_1920X1080P60;
> + u32 *mbus_codes;
> + int i, ret;
> +
> + /* Check if the adapter supports the needed features */
> + if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA))
> + return -EIO;
> +
> + state = kzalloc(sizeof(struct tda1997x_state), GFP_KERNEL);
> + if (!state)
> + return -ENOMEM;
> +
> + state->client = client;
> + pdata = &state->pdata;
> + if (IS_ENABLED(CONFIG_OF) && client->dev.of_node) {
> + const struct of_device_id *oid;
> +
> + oid = of_match_node(tda1997x_of_id, client->dev.of_node);
> + state->info = oid->data;
> +
> + ret = tda1997x_parse_dt(state);
> + if (ret < 0) {
> + v4l_err(client, "DT parsing error\n");
> + goto err_free_state;
> + }
> + } else if (client->dev.platform_data) {
> + struct tda1997x_platform_data *pdata =
> + client->dev.platform_data;
> + state->info =
> + (const struct tda1997x_chip_info *)id->driver_data;
> + state->pdata = *pdata;
> + } else {
> + v4l_err(client, "No platform data\n");
> + ret = -ENODEV;
> + goto err_free_state;
> + }
> +
> + ret = tda1997x_get_regulators(state);
> + if (ret)
> + goto err_free_state;
> +
> + ret = tda1997x_set_power(state, 1);
> + if (ret)
> + goto err_free_state;
> +
> + mutex_init(&state->page_lock);
> + mutex_init(&state->lock);
> + state->page = 0xff;
> +
> + INIT_DELAYED_WORK(&state->delayed_work_enable_hpd,
> + tda1997x_delayed_work_enable_hpd);
> +
> + /* set video format based on chip and bus width */
> + ret = tda1997x_identify_module(state);
> + if (ret)
> + goto err_free_mutex;
> +
> + /* initialize subdev */
> + sd = &state->sd;
> + v4l2_i2c_subdev_init(sd, client, &tda1997x_subdev_ops);
> + snprintf(sd->name, sizeof(sd->name), "%s %d-%04x",
> + id->name, i2c_adapter_id(client->adapter),
> + client->addr);
> + sd->flags = V4L2_SUBDEV_FL_HAS_DEVNODE | V4L2_SUBDEV_FL_HAS_EVENTS;
> + sd->entity.ops = &tda1997x_media_ops;
> +
> + /* set allowed mbus modes based on chip, bus-type, and bus-width */
> + i = 0;
> + mbus_codes = state->mbus_codes;
> + switch (state->info->type) {
> + case TDA19973:
> + switch (pdata->vidout_bus_type) {
> + case V4L2_MBUS_PARALLEL:
> + switch (pdata->vidout_bus_width) {
> + case 36:
> + mbus_codes[i++] = MEDIA_BUS_FMT_RGB121212_1X36;
> + mbus_codes[i++] = MEDIA_BUS_FMT_YUV12_1X36;
> + /* fall-through */
> + case 24:
> + mbus_codes[i++] = MEDIA_BUS_FMT_UYVY12_1X24;
> + break;
> + }
> + break;
> + case V4L2_MBUS_BT656:
> + switch (pdata->vidout_bus_width) {
> + case 36:
> + case 24:
> + case 12:
> + mbus_codes[i++] = MEDIA_BUS_FMT_UYVY12_2X12;
> + mbus_codes[i++] = MEDIA_BUS_FMT_UYVY10_2X10;
> + mbus_codes[i++] = MEDIA_BUS_FMT_UYVY8_2X8;
> + break;
> + }
> + break;
> + default:
> + break;
> + }
> + break;
> + case TDA19971:
> + switch (pdata->vidout_bus_type) {
> + case V4L2_MBUS_PARALLEL:
> + switch (pdata->vidout_bus_width) {
> + case 24:
> + mbus_codes[i++] = MEDIA_BUS_FMT_RGB888_1X24;
> + mbus_codes[i++] = MEDIA_BUS_FMT_YUV8_1X24;
> + mbus_codes[i++] = MEDIA_BUS_FMT_UYVY12_1X24;
> + /* fall through */
> + case 20:
> + mbus_codes[i++] = MEDIA_BUS_FMT_UYVY10_1X20;
> + /* fall through */
> + case 16:
> + mbus_codes[i++] = MEDIA_BUS_FMT_UYVY8_1X16;
> + break;
> + }
> + break;
> + case V4L2_MBUS_BT656:
> + switch (pdata->vidout_bus_width) {
> + case 12:
> + mbus_codes[i++] = MEDIA_BUS_FMT_UYVY12_2X12;
> + /* fall through */
> + case 10:
> + mbus_codes[i++] = MEDIA_BUS_FMT_UYVY10_2X10;
> + /* fall through */
> + case 8:
> + mbus_codes[i++] = MEDIA_BUS_FMT_UYVY8_2X8;
> + break;
> + }
> + break;
> + default:
> + break;
> + }
> + break;
> + }

Add a sanity check here:

if (WARN_ON(i > ARRAY_SIZE(state->mbus_codes))
// bail out

It's all to easy to forget to increase the mbus_codes array if a new code is
added later.

> +
> + /* default format */
> + tda1997x_setup_format(state, state->mbus_codes[0]);
> + state->timings = cea1920x1080;
> +
> + /*
> + * default to SRGB full range quantization
> + * (in case we don't get an infoframe such as DVI signal
> + */
> + state->colorimetry.colorspace = V4L2_COLORSPACE_SRGB;
> + state->colorimetry.quantization = V4L2_QUANTIZATION_FULL_RANGE;
> +
> + /* disable/reset HDCP to get correct I2C access to Rx HDMI */
> + io_write(sd, REG_MAN_SUS_HDMI_SEL, MAN_RST_HDCP | MAN_DIS_HDCP);
> +
> + /*
> + * if N2 version, reset compdel_bp as it may generate some small pixel
> + * shifts in case of embedded sync/or delay lower than 4
> + */
> + if (state->chip_revision != 0) {
> + io_write(sd, REG_MAN_SUS_HDMI_SEL, 0x00);
> + io_write(sd, REG_VDP_CTRL, 0x1f);
> + }
> +
> + v4l_info(client, "NXP %s N%d detected\n", state->info->name,
> + state->chip_revision + 1);
> + v4l_info(client, "video: %dbit %s %d formats available\n",
> + pdata->vidout_bus_width,
> + (pdata->vidout_bus_type == V4L2_MBUS_PARALLEL) ?
> + "parallel" : "BT656",
> + i);
> + if (pdata->audout_format) {
> + v4l_info(client, "audio: %dch %s layout%d sysclk=%d*fs\n",
> + pdata->audout_layout ? 2 : 8,
> + audfmt_names[pdata->audout_format],
> + pdata->audout_layout,
> + pdata->audout_mclk_fs);
> + }
> +
> + ret = 0x34 + ((io_read(sd, REG_SLAVE_ADDR)>>4) & 0x03);
> + state->client_cec = i2c_new_dummy(client->adapter, ret);
> + v4l_info(client, "CEC slave address 0x%02x\n", ret);
> +
> + ret = tda1997x_core_init(sd);
> + if (ret)
> + goto err_free_mutex;
> +
> + /* control handlers */
> + hdl = &state->hdl;
> + v4l2_ctrl_handler_init(hdl, 5);
> + ctrl = v4l2_ctrl_new_std_menu(hdl, &tda1997x_ctrl_ops,
> + V4L2_CID_DV_RX_IT_CONTENT_TYPE,
> + V4L2_DV_IT_CONTENT_TYPE_NO_ITC, 0,
> + V4L2_DV_IT_CONTENT_TYPE_NO_ITC);
> + if (ctrl)
> + ctrl->flags |= V4L2_CTRL_FLAG_VOLATILE;
> + /* custom controls */
> + state->detect_tx_5v_ctrl = v4l2_ctrl_new_std(hdl, NULL,
> + V4L2_CID_DV_RX_POWER_PRESENT, 0, 1, 0, 0);
> + state->rgb_quantization_range_ctrl = v4l2_ctrl_new_std_menu(hdl,
> + &tda1997x_ctrl_ops,
> + V4L2_CID_DV_RX_RGB_RANGE, V4L2_DV_RGB_RANGE_FULL, 0,
> + V4L2_DV_RGB_RANGE_AUTO);
> +
> + /* initialize source pads */
> + state->pads[TDA1997X_PAD_SOURCE].flags = MEDIA_PAD_FL_SOURCE;
> + ret = media_entity_pads_init(&sd->entity, TDA1997X_NUM_PADS,
> + state->pads);
> + if (ret) {
> + v4l_err(client, "failed entity_init: %d", ret);
> + goto err_free_mutex;
> + }
> +
> + ret = v4l2_async_register_subdev(sd);
> + if (ret)
> + goto err_free_media;
> +
> + /* register audio DAI */
> + if (pdata->audout_format) {
> + u64 formats;
> +
> + if (pdata->audout_width == 32)
> + formats = SNDRV_PCM_FMTBIT_S32_LE;
> + else
> + formats = SNDRV_PCM_FMTBIT_S16_LE;
> + tda1997x_audio_dai.capture.formats = formats;
> + ret = snd_soc_register_codec(&state->client->dev,
> + &tda1997x_codec_driver,
> + &tda1997x_audio_dai, 1);
> + if (ret) {
> + dev_err(&client->dev, "register audio codec failed\n");
> + goto err_free_media;
> + }
> + dev_set_drvdata(&state->client->dev, state);
> + v4l_info(state->client, "registered audio codec\n");
> + }
> +
> + /* request irq */
> + ret = devm_request_threaded_irq(&client->dev, client->irq,
> + NULL, tda1997x_isr_thread,
> + IRQF_TRIGGER_LOW | IRQF_ONESHOT,
> + KBUILD_MODNAME, state);
> + if (ret) {
> + v4l_err(client, "irq%d reg failed: %d\n", client->irq, ret);
> + goto err_free_media;
> + }
> +
> + return 0;
> +
> +err_free_media:
> + media_entity_cleanup(&sd->entity);
> +err_free_mutex:
> + cancel_delayed_work(&state->delayed_work_enable_hpd);
> + mutex_destroy(&state->page_lock);
> + mutex_destroy(&state->lock);
> +err_free_state:
> + kfree(state);
> + dev_err(&client->dev, "%s failed: %d\n", __func__, ret);
> +
> + return ret;
> +}
> +
> +static int tda1997x_remove(struct i2c_client *client)
> +{
> + struct v4l2_subdev *sd = i2c_get_clientdata(client);
> + struct tda1997x_state *state = to_state(sd);
> + struct tda1997x_platform_data *pdata = &state->pdata;
> +
> + if (pdata->audout_format) {
> + snd_soc_unregister_codec(&client->dev);
> + mutex_destroy(&state->audio_lock);
> + }
> +
> + disable_irq(state->client->irq);
> + tda1997x_power_mode(state, 0);
> +
> + v4l2_async_unregister_subdev(sd);
> + media_entity_cleanup(&sd->entity);
> + regulator_bulk_disable(TDA1997X_NUM_SUPPLIES, state->supplies);
> + i2c_unregister_device(state->client_cec);
> + cancel_delayed_work(&state->delayed_work_enable_hpd);
> + mutex_destroy(&state->page_lock);
> + mutex_destroy(&state->lock);
> +
> + kfree(state);
> +
> + return 0;
> +}
> +
> +static struct i2c_driver tda1997x_i2c_driver = {
> + .driver = {
> + .name = "tda1997x",
> + .owner = THIS_MODULE,
> + .of_match_table = of_match_ptr(tda1997x_of_id),
> + },
> + .probe = tda1997x_probe,
> + .remove = tda1997x_remove,
> + .id_table = tda1997x_i2c_id,
> +};
> +
> +module_i2c_driver(tda1997x_i2c_driver);
> +
> +MODULE_AUTHOR("Tim Harvey <[email protected]>");
> +MODULE_DESCRIPTION("TDA1997X HDMI Receiver driver");
> +MODULE_LICENSE("GPL v2");
> diff --git a/include/media/i2c/tda1997x.h b/include/media/i2c/tda1997x.h
> new file mode 100644
> index 0000000..c6c2a8a
> --- /dev/null
> +++ b/include/media/i2c/tda1997x.h
> @@ -0,0 +1,42 @@
> +/* SPDX-License-Identifier: GPL-2.0 */
> +/*
> + * tda1997x - NXP HDMI receiver
> + *
> + * Copyright 2017 Tim Harvey <[email protected]>
> + *
> + */
> +
> +#ifndef _TDA1997X_
> +#define _TDA1997X_
> +
> +/* Platform Data */
> +struct tda1997x_platform_data {
> + enum v4l2_mbus_type vidout_bus_type;
> + u32 vidout_bus_width;
> + u8 vidout_port_cfg[9];
> + /* pin polarity (1=invert) */
> + bool vidout_inv_de;
> + bool vidout_inv_hs;
> + bool vidout_inv_vs;
> + bool vidout_inv_pclk;
> + /* clock delays (0=-8, 1=-7 ... 15=+7 pixels) */
> + u8 vidout_delay_hs;
> + u8 vidout_delay_vs;
> + u8 vidout_delay_de;
> + u8 vidout_delay_pclk;
> + /* sync selections (controls how sync pins are derived) */
> + u8 vidout_sel_hs;
> + u8 vidout_sel_vs;
> + u8 vidout_sel_de;
> +
> + /* Audio Port Output */
> + int audout_format;
> + u32 audout_mclk_fs; /* clock multiplier */
> + u32 audout_width; /* 13 or 32 bit */
> + u32 audout_layout; /* layout0=AP0 layout1=AP0,AP1,AP2,AP3 */
> + bool audout_layoutauto; /* audio layout dictated by pkt header */
> + bool audout_invert_clk; /* data valid on rising edge of BCLK */
> + bool audio_auto_mute; /* enable hardware audio auto-mute */
> +};
> +
> +#endif
>

Regards,

Hans