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openwrt/target/linux/bcm27xx/patches-6.6/950-0408-media-i2c-Add-a-driver-for-the-Sony-IMX708-image-sen.patch
Álvaro Fernández Rojas 8c405cdccc bcm27xx: add 6.6 kernel patches 
The patches were generated from the RPi repo with the following command:
git format-patch v6.6.34..rpi-6.1.y

Some patches needed rebasing and, as usual, the applied and reverted, wireless
drivers, Github workflows, READMEs and defconfigs patches were removed.

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
2024-06-18 18:52:49 +02:00

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From 82944822bae331a927f5f863b552b4a891b84a60 Mon Sep 17 00:00:00 2001
From: Nick Hollinghurst <nick.hollinghurst@raspberrypi.com>
Date: Thu, 22 Dec 2022 13:59:33 +0000
Subject: [PATCH 0408/1085] media/i2c: Add a driver for the Sony IMX708 image
sensor
The imx708 is a 12MP MIPI sensor with a 16:9 aspect ratio, here using
two CSI-2 lanes. It is a "quad Bayer" sensor with all 3 modes offering
10-bit output:
12MP: 4608x2592 up to 14.35fps (full FoV)
1080p: 2304x1296 up to 56.02fps (full FoV)
720p: 1536x864 up to 120.12fps (cropped)
This imx708 sensor driver is based heavily on the imx477 driver and
has been tested on the Raspberry Pi platform using libcamera.
Signed-off-by: Nick Hollinghurst <nick.hollinghurst@raspberrypi.com>
Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
---
drivers/media/i2c/Kconfig | 13 +
drivers/media/i2c/Makefile | 1 +
drivers/media/i2c/imx708.c | 1984 ++++++++++++++++++++++++++++++++++++
3 files changed, 1998 insertions(+)
create mode 100644 drivers/media/i2c/imx708.c
--- a/drivers/media/i2c/Kconfig
+++ b/drivers/media/i2c/Kconfig
@@ -234,6 +234,19 @@ config VIDEO_IMX519
To compile this driver as a module, choose M here: the
module will be called IMX519.
+config VIDEO_IMX708
+ tristate "Sony IMX708 sensor support"
+ depends on I2C && VIDEO_DEV
+ select MEDIA_CONTROLLER
+ select VIDEO_V4L2_SUBDEV_API
+ select V4L2_FWNODE
+ help
+ This is a Video4Linux2 sensor driver for the Sony
+ IMX708 camera.
+
+ To compile this driver as a module, choose M here: the
+ module will be called imx708.
+
config VIDEO_MAX9271_LIB
tristate
--- a/drivers/media/i2c/Makefile
+++ b/drivers/media/i2c/Makefile
@@ -58,6 +58,7 @@ obj-$(CONFIG_VIDEO_IMX412) += imx412.o
obj-$(CONFIG_VIDEO_IMX415) += imx415.o
obj-$(CONFIG_VIDEO_IMX477) += imx477.o
obj-$(CONFIG_VIDEO_IMX519) += imx519.o
+obj-$(CONFIG_VIDEO_IMX708) += imx708.o
obj-$(CONFIG_VIDEO_IR_I2C) += ir-kbd-i2c.o
obj-$(CONFIG_VIDEO_IRS1125) += irs1125.o
obj-$(CONFIG_VIDEO_ISL7998X) += isl7998x.o
--- /dev/null
+++ b/drivers/media/i2c/imx708.c
@@ -0,0 +1,1984 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * A V4L2 driver for Sony IMX708 cameras.
+ * Copyright (C) 2022, Raspberry Pi Ltd
+ *
+ * Based on Sony imx477 camera driver
+ * Copyright (C) 2020 Raspberry Pi Ltd
+ */
+#include <asm/unaligned.h>
+#include <linux/clk.h>
+#include <linux/delay.h>
+#include <linux/gpio/consumer.h>
+#include <linux/i2c.h>
+#include <linux/module.h>
+#include <linux/pm_runtime.h>
+#include <linux/regulator/consumer.h>
+#include <media/v4l2-ctrls.h>
+#include <media/v4l2-device.h>
+#include <media/v4l2-event.h>
+#include <media/v4l2-fwnode.h>
+#include <media/v4l2-mediabus.h>
+
+#define IMX708_REG_VALUE_08BIT 1
+#define IMX708_REG_VALUE_16BIT 2
+
+/* Chip ID */
+#define IMX708_REG_CHIP_ID 0x0016
+#define IMX708_CHIP_ID 0x0708
+
+#define IMX708_REG_MODE_SELECT 0x0100
+#define IMX708_MODE_STANDBY 0x00
+#define IMX708_MODE_STREAMING 0x01
+
+#define IMX708_REG_ORIENTATION 0x101
+
+#define IMX708_XCLK_FREQ 24000000
+
+#define IMX708_DEFAULT_LINK_FREQ 450000000
+
+/* Default initial pixel rate, will get updated for each mode. */
+#define IMX708_INITIAL_PIXEL_RATE 590000000
+
+/* V_TIMING internal */
+#define IMX708_REG_FRAME_LENGTH 0x0340
+#define IMX708_FRAME_LENGTH_MAX 0xffff
+
+/* Exposure control */
+#define IMX708_REG_EXPOSURE 0x0202
+#define IMX708_EXPOSURE_OFFSET 48
+#define IMX708_EXPOSURE_DEFAULT 0x640
+#define IMX708_EXPOSURE_STEP 1
+#define IMX708_EXPOSURE_MIN 1
+#define IMX708_EXPOSURE_MAX (IMX708_FRAME_LENGTH_MAX - \
+ IMX708_EXPOSURE_OFFSET)
+
+/* Analog gain control */
+#define IMX708_REG_ANALOG_GAIN 0x0204
+#define IMX708_ANA_GAIN_MIN 112
+#define IMX708_ANA_GAIN_MAX 960
+#define IMX708_ANA_GAIN_STEP 1
+#define IMX708_ANA_GAIN_DEFAULT IMX708_ANA_GAIN_MIN
+
+/* Digital gain control */
+#define IMX708_REG_DIGITAL_GAIN 0x020e
+#define IMX708_DGTL_GAIN_MIN 0x0100
+#define IMX708_DGTL_GAIN_MAX 0xffff
+#define IMX708_DGTL_GAIN_DEFAULT 0x0100
+#define IMX708_DGTL_GAIN_STEP 1
+
+/* Colour balance controls */
+#define IMX708_REG_COLOUR_BALANCE_RED 0x0b90
+#define IMX708_REG_COLOUR_BALANCE_BLUE 0x0b92
+#define IMX708_COLOUR_BALANCE_MIN 0x01
+#define IMX708_COLOUR_BALANCE_MAX 0xffff
+#define IMX708_COLOUR_BALANCE_STEP 0x01
+#define IMX708_COLOUR_BALANCE_DEFAULT 0x100
+
+/* Test Pattern Control */
+#define IMX708_REG_TEST_PATTERN 0x0600
+#define IMX708_TEST_PATTERN_DISABLE 0
+#define IMX708_TEST_PATTERN_SOLID_COLOR 1
+#define IMX708_TEST_PATTERN_COLOR_BARS 2
+#define IMX708_TEST_PATTERN_GREY_COLOR 3
+#define IMX708_TEST_PATTERN_PN9 4
+
+/* Test pattern colour components */
+#define IMX708_REG_TEST_PATTERN_R 0x0602
+#define IMX708_REG_TEST_PATTERN_GR 0x0604
+#define IMX708_REG_TEST_PATTERN_B 0x0606
+#define IMX708_REG_TEST_PATTERN_GB 0x0608
+#define IMX708_TEST_PATTERN_COLOUR_MIN 0
+#define IMX708_TEST_PATTERN_COLOUR_MAX 0x0fff
+#define IMX708_TEST_PATTERN_COLOUR_STEP 1
+
+#define IMX708_REG_BASE_SPC_GAINS_L 0x7b10
+#define IMX708_REG_BASE_SPC_GAINS_R 0x7c00
+
+/* HDR exposure ratio (long:med == med:short) */
+#define IMX708_HDR_EXPOSURE_RATIO 4
+#define IMX708_REG_MID_EXPOSURE 0x3116
+#define IMX708_REG_SHT_EXPOSURE 0x0224
+#define IMX708_REG_MID_ANALOG_GAIN 0x3118
+#define IMX708_REG_SHT_ANALOG_GAIN 0x0216
+
+/*
+ * Metadata buffer holds a variety of data, all sent with the same VC/DT (0x12).
+ * It comprises two scanlines (of up to 5760 bytes each, for 4608 pixels)
+ * of embedded data, one line of PDAF data, and two lines of AE-HIST data
+ * (AE histograms are valid for HDR mode and empty in non-HDR modes).
+ */
+#define IMX708_EMBEDDED_LINE_WIDTH (5 * 5760)
+#define IMX708_NUM_EMBEDDED_LINES 1
+
+enum pad_types {
+ IMAGE_PAD,
+ METADATA_PAD,
+ NUM_PADS
+};
+
+/* IMX708 native and active pixel array size. */
+#define IMX708_NATIVE_WIDTH 4640U
+#define IMX708_NATIVE_HEIGHT 2658U
+#define IMX708_PIXEL_ARRAY_LEFT 16U
+#define IMX708_PIXEL_ARRAY_TOP 24U
+#define IMX708_PIXEL_ARRAY_WIDTH 4608U
+#define IMX708_PIXEL_ARRAY_HEIGHT 2592U
+
+struct imx708_reg {
+ u16 address;
+ u8 val;
+};
+
+struct imx708_reg_list {
+ unsigned int num_of_regs;
+ const struct imx708_reg *regs;
+};
+
+/* Mode : resolution and related config&values */
+struct imx708_mode {
+ /* Frame width */
+ unsigned int width;
+
+ /* Frame height */
+ unsigned int height;
+
+ /* H-timing in pixels */
+ unsigned int line_length_pix;
+
+ /* Analog crop rectangle. */
+ struct v4l2_rect crop;
+
+ /* Highest possible framerate. */
+ unsigned int vblank_min;
+
+ /* Default framerate. */
+ unsigned int vblank_default;
+
+ /* Default register values */
+ struct imx708_reg_list reg_list;
+
+ /* Not all modes have the same pixel rate. */
+ u64 pixel_rate;
+
+ /* Not all modes have the same minimum exposure. */
+ u32 exposure_lines_min;
+
+ /* Not all modes have the same exposure lines step. */
+ u32 exposure_lines_step;
+
+ /* HDR flag, currently not used at runtime */
+ bool hdr;
+};
+
+/* Default PDAF pixel correction gains */
+static const u8 pdaf_gains[2][9] = {
+ { 0x4c, 0x4c, 0x4c, 0x46, 0x3e, 0x38, 0x35, 0x35, 0x35 },
+ { 0x35, 0x35, 0x35, 0x38, 0x3e, 0x46, 0x4c, 0x4c, 0x4c }
+};
+
+static const struct imx708_reg mode_common_regs[] = {
+ {0x0100, 0x00},
+ {0x0136, 0x18},
+ {0x0137, 0x00},
+ {0x33F0, 0x02},
+ {0x33F1, 0x05},
+ {0x3062, 0x00},
+ {0x3063, 0x12},
+ {0x3068, 0x00},
+ {0x3069, 0x12},
+ {0x306A, 0x00},
+ {0x306B, 0x30},
+ {0x3076, 0x00},
+ {0x3077, 0x30},
+ {0x3078, 0x00},
+ {0x3079, 0x30},
+ {0x5E54, 0x0C},
+ {0x6E44, 0x00},
+ {0xB0B6, 0x01},
+ {0xE829, 0x00},
+ {0xF001, 0x08},
+ {0xF003, 0x08},
+ {0xF00D, 0x10},
+ {0xF00F, 0x10},
+ {0xF031, 0x08},
+ {0xF033, 0x08},
+ {0xF03D, 0x10},
+ {0xF03F, 0x10},
+ {0x0112, 0x0A},
+ {0x0113, 0x0A},
+ {0x0114, 0x01},
+ {0x0B8E, 0x01},
+ {0x0B8F, 0x00},
+ {0x0B94, 0x01},
+ {0x0B95, 0x00},
+ {0x3400, 0x01},
+ {0x3478, 0x01},
+ {0x3479, 0x1c},
+ {0x3091, 0x01},
+ {0x3092, 0x00},
+ {0x3419, 0x00},
+ {0xBCF1, 0x02},
+ {0x3094, 0x01},
+ {0x3095, 0x01},
+ {0x3362, 0x00},
+ {0x3363, 0x00},
+ {0x3364, 0x00},
+ {0x3365, 0x00},
+ {0x0138, 0x01},
+};
+
+/* 10-bit. */
+static const struct imx708_reg mode_4608x2592_regs[] = {
+ {0x0342, 0x3D},
+ {0x0343, 0x20},
+ {0x0340, 0x0A},
+ {0x0341, 0x59},
+ {0x0344, 0x00},
+ {0x0345, 0x00},
+ {0x0346, 0x00},
+ {0x0347, 0x00},
+ {0x0348, 0x11},
+ {0x0349, 0xFF},
+ {0x034A, 0X0A},
+ {0x034B, 0x1F},
+ {0x0220, 0x62},
+ {0x0222, 0x01},
+ {0x0900, 0x00},
+ {0x0901, 0x11},
+ {0x0902, 0x0A},
+ {0x3200, 0x01},
+ {0x3201, 0x01},
+ {0x32D5, 0x01},
+ {0x32D6, 0x00},
+ {0x32DB, 0x01},
+ {0x32DF, 0x00},
+ {0x350C, 0x00},
+ {0x350D, 0x00},
+ {0x0408, 0x00},
+ {0x0409, 0x00},
+ {0x040A, 0x00},
+ {0x040B, 0x00},
+ {0x040C, 0x12},
+ {0x040D, 0x00},
+ {0x040E, 0x0A},
+ {0x040F, 0x20},
+ {0x034C, 0x12},
+ {0x034D, 0x00},
+ {0x034E, 0x0A},
+ {0x034F, 0x20},
+ {0x0301, 0x05},
+ {0x0303, 0x02},
+ {0x0305, 0x02},
+ {0x0306, 0x00},
+ {0x0307, 0x7C},
+ {0x030B, 0x02},
+ {0x030D, 0x04},
+ {0x030E, 0x01},
+ {0x030F, 0x2C},
+ {0x0310, 0x01},
+ {0x3CA0, 0x00},
+ {0x3CA1, 0x64},
+ {0x3CA4, 0x00},
+ {0x3CA5, 0x00},
+ {0x3CA6, 0x00},
+ {0x3CA7, 0x00},
+ {0x3CAA, 0x00},
+ {0x3CAB, 0x00},
+ {0x3CB8, 0x00},
+ {0x3CB9, 0x08},
+ {0x3CBA, 0x00},
+ {0x3CBB, 0x00},
+ {0x3CBC, 0x00},
+ {0x3CBD, 0x3C},
+ {0x3CBE, 0x00},
+ {0x3CBF, 0x00},
+ {0x0202, 0x0A},
+ {0x0203, 0x29},
+ {0x0224, 0x01},
+ {0x0225, 0xF4},
+ {0x3116, 0x01},
+ {0x3117, 0xF4},
+ {0x0204, 0x00},
+ {0x0205, 0x00},
+ {0x0216, 0x00},
+ {0x0217, 0x00},
+ {0x0218, 0x01},
+ {0x0219, 0x00},
+ {0x020E, 0x01},
+ {0x020F, 0x00},
+ {0x3118, 0x00},
+ {0x3119, 0x00},
+ {0x311A, 0x01},
+ {0x311B, 0x00},
+ {0x341a, 0x00},
+ {0x341b, 0x00},
+ {0x341c, 0x00},
+ {0x341d, 0x00},
+ {0x341e, 0x01},
+ {0x341f, 0x20},
+ {0x3420, 0x00},
+ {0x3421, 0xd8},
+ {0xC428, 0x00},
+ {0xC429, 0x04},
+ {0x3366, 0x00},
+ {0x3367, 0x00},
+ {0x3368, 0x00},
+ {0x3369, 0x00},
+};
+
+static const struct imx708_reg mode_2x2binned_regs[] = {
+ {0x0342, 0x1E},
+ {0x0343, 0x90},
+ {0x0340, 0x05},
+ {0x0341, 0x38},
+ {0x0344, 0x00},
+ {0x0345, 0x00},
+ {0x0346, 0x00},
+ {0x0347, 0x00},
+ {0x0348, 0x11},
+ {0x0349, 0xFF},
+ {0x034A, 0X0A},
+ {0x034B, 0x1F},
+ {0x0220, 0x62},
+ {0x0222, 0x01},
+ {0x0900, 0x01},
+ {0x0901, 0x22},
+ {0x0902, 0x08},
+ {0x3200, 0x41},
+ {0x3201, 0x41},
+ {0x32D5, 0x00},
+ {0x32D6, 0x00},
+ {0x32DB, 0x01},
+ {0x32DF, 0x00},
+ {0x350C, 0x00},
+ {0x350D, 0x00},
+ {0x0408, 0x00},
+ {0x0409, 0x00},
+ {0x040A, 0x00},
+ {0x040B, 0x00},
+ {0x040C, 0x09},
+ {0x040D, 0x00},
+ {0x040E, 0x05},
+ {0x040F, 0x10},
+ {0x034C, 0x09},
+ {0x034D, 0x00},
+ {0x034E, 0x05},
+ {0x034F, 0x10},
+ {0x0301, 0x05},
+ {0x0303, 0x02},
+ {0x0305, 0x02},
+ {0x0306, 0x00},
+ {0x0307, 0x7A},
+ {0x030B, 0x02},
+ {0x030D, 0x04},
+ {0x030E, 0x01},
+ {0x030F, 0x2C},
+ {0x0310, 0x01},
+ {0x3CA0, 0x00},
+ {0x3CA1, 0x3C},
+ {0x3CA4, 0x00},
+ {0x3CA5, 0x3C},
+ {0x3CA6, 0x00},
+ {0x3CA7, 0x00},
+ {0x3CAA, 0x00},
+ {0x3CAB, 0x00},
+ {0x3CB8, 0x00},
+ {0x3CB9, 0x1C},
+ {0x3CBA, 0x00},
+ {0x3CBB, 0x08},
+ {0x3CBC, 0x00},
+ {0x3CBD, 0x1E},
+ {0x3CBE, 0x00},
+ {0x3CBF, 0x0A},
+ {0x0202, 0x05},
+ {0x0203, 0x08},
+ {0x0224, 0x01},
+ {0x0225, 0xF4},
+ {0x3116, 0x01},
+ {0x3117, 0xF4},
+ {0x0204, 0x00},
+ {0x0205, 0x70},
+ {0x0216, 0x00},
+ {0x0217, 0x70},
+ {0x0218, 0x01},
+ {0x0219, 0x00},
+ {0x020E, 0x01},
+ {0x020F, 0x00},
+ {0x3118, 0x00},
+ {0x3119, 0x70},
+ {0x311A, 0x01},
+ {0x311B, 0x00},
+ {0x341a, 0x00},
+ {0x341b, 0x00},
+ {0x341c, 0x00},
+ {0x341d, 0x00},
+ {0x341e, 0x00},
+ {0x341f, 0x90},
+ {0x3420, 0x00},
+ {0x3421, 0x6c},
+ {0x3366, 0x00},
+ {0x3367, 0x00},
+ {0x3368, 0x00},
+ {0x3369, 0x00},
+};
+
+static const struct imx708_reg mode_2x2binned_720p_regs[] = {
+ {0x0342, 0x14},
+ {0x0343, 0x60},
+ {0x0340, 0x04},
+ {0x0341, 0xB6},
+ {0x0344, 0x03},
+ {0x0345, 0x00},
+ {0x0346, 0x01},
+ {0x0347, 0xB0},
+ {0x0348, 0x0E},
+ {0x0349, 0xFF},
+ {0x034A, 0x08},
+ {0x034B, 0x6F},
+ {0x0220, 0x62},
+ {0x0222, 0x01},
+ {0x0900, 0x01},
+ {0x0901, 0x22},
+ {0x0902, 0x08},
+ {0x3200, 0x41},
+ {0x3201, 0x41},
+ {0x32D5, 0x00},
+ {0x32D6, 0x00},
+ {0x32DB, 0x01},
+ {0x32DF, 0x01},
+ {0x350C, 0x00},
+ {0x350D, 0x00},
+ {0x0408, 0x00},
+ {0x0409, 0x00},
+ {0x040A, 0x00},
+ {0x040B, 0x00},
+ {0x040C, 0x06},
+ {0x040D, 0x00},
+ {0x040E, 0x03},
+ {0x040F, 0x60},
+ {0x034C, 0x06},
+ {0x034D, 0x00},
+ {0x034E, 0x03},
+ {0x034F, 0x60},
+ {0x0301, 0x05},
+ {0x0303, 0x02},
+ {0x0305, 0x02},
+ {0x0306, 0x00},
+ {0x0307, 0x76},
+ {0x030B, 0x02},
+ {0x030D, 0x04},
+ {0x030E, 0x01},
+ {0x030F, 0x2C},
+ {0x0310, 0x01},
+ {0x3CA0, 0x00},
+ {0x3CA1, 0x3C},
+ {0x3CA4, 0x01},
+ {0x3CA5, 0x5E},
+ {0x3CA6, 0x00},
+ {0x3CA7, 0x00},
+ {0x3CAA, 0x00},
+ {0x3CAB, 0x00},
+ {0x3CB8, 0x00},
+ {0x3CB9, 0x0C},
+ {0x3CBA, 0x00},
+ {0x3CBB, 0x04},
+ {0x3CBC, 0x00},
+ {0x3CBD, 0x1E},
+ {0x3CBE, 0x00},
+ {0x3CBF, 0x05},
+ {0x0202, 0x04},
+ {0x0203, 0x86},
+ {0x0224, 0x01},
+ {0x0225, 0xF4},
+ {0x3116, 0x01},
+ {0x3117, 0xF4},
+ {0x0204, 0x00},
+ {0x0205, 0x70},
+ {0x0216, 0x00},
+ {0x0217, 0x70},
+ {0x0218, 0x01},
+ {0x0219, 0x00},
+ {0x020E, 0x01},
+ {0x020F, 0x00},
+ {0x3118, 0x00},
+ {0x3119, 0x70},
+ {0x311A, 0x01},
+ {0x311B, 0x00},
+ {0x341a, 0x00},
+ {0x341b, 0x00},
+ {0x341c, 0x00},
+ {0x341d, 0x00},
+ {0x341e, 0x00},
+ {0x341f, 0x60},
+ {0x3420, 0x00},
+ {0x3421, 0x48},
+ {0x3366, 0x00},
+ {0x3367, 0x00},
+ {0x3368, 0x00},
+ {0x3369, 0x00},
+};
+
+static const struct imx708_reg mode_hdr_regs[] = {
+ {0x0342, 0x14},
+ {0x0343, 0x60},
+ {0x0340, 0x0A},
+ {0x0341, 0x5B},
+ {0x0344, 0x00},
+ {0x0345, 0x00},
+ {0x0346, 0x00},
+ {0x0347, 0x00},
+ {0x0348, 0x11},
+ {0x0349, 0xFF},
+ {0x034A, 0X0A},
+ {0x034B, 0x1F},
+ {0x0220, 0x01},
+ {0x0222, IMX708_HDR_EXPOSURE_RATIO},
+ {0x0900, 0x00},
+ {0x0901, 0x11},
+ {0x0902, 0x0A},
+ {0x3200, 0x01},
+ {0x3201, 0x01},
+ {0x32D5, 0x00},
+ {0x32D6, 0x00},
+ {0x32DB, 0x01},
+ {0x32DF, 0x00},
+ {0x350C, 0x00},
+ {0x350D, 0x00},
+ {0x0408, 0x00},
+ {0x0409, 0x00},
+ {0x040A, 0x00},
+ {0x040B, 0x00},
+ {0x040C, 0x09},
+ {0x040D, 0x00},
+ {0x040E, 0x05},
+ {0x040F, 0x10},
+ {0x034C, 0x09},
+ {0x034D, 0x00},
+ {0x034E, 0x05},
+ {0x034F, 0x10},
+ {0x0301, 0x05},
+ {0x0303, 0x02},
+ {0x0305, 0x02},
+ {0x0306, 0x00},
+ {0x0307, 0xA2},
+ {0x030B, 0x02},
+ {0x030D, 0x04},
+ {0x030E, 0x01},
+ {0x030F, 0x2C},
+ {0x0310, 0x01},
+ {0x3CA0, 0x00},
+ {0x3CA1, 0x00},
+ {0x3CA4, 0x00},
+ {0x3CA5, 0x00},
+ {0x3CA6, 0x00},
+ {0x3CA7, 0x28},
+ {0x3CAA, 0x00},
+ {0x3CAB, 0x00},
+ {0x3CB8, 0x00},
+ {0x3CB9, 0x30},
+ {0x3CBA, 0x00},
+ {0x3CBB, 0x00},
+ {0x3CBC, 0x00},
+ {0x3CBD, 0x32},
+ {0x3CBE, 0x00},
+ {0x3CBF, 0x00},
+ {0x0202, 0x0A},
+ {0x0203, 0x2B},
+ {0x0224, 0x0A},
+ {0x0225, 0x2B},
+ {0x3116, 0x0A},
+ {0x3117, 0x2B},
+ {0x0204, 0x00},
+ {0x0205, 0x00},
+ {0x0216, 0x00},
+ {0x0217, 0x00},
+ {0x0218, 0x01},
+ {0x0219, 0x00},
+ {0x020E, 0x01},
+ {0x020F, 0x00},
+ {0x3118, 0x00},
+ {0x3119, 0x00},
+ {0x311A, 0x01},
+ {0x311B, 0x00},
+ {0x341a, 0x00},
+ {0x341b, 0x00},
+ {0x341c, 0x00},
+ {0x341d, 0x00},
+ {0x341e, 0x00},
+ {0x341f, 0x90},
+ {0x3420, 0x00},
+ {0x3421, 0x6c},
+ {0x3360, 0x01},
+ {0x3361, 0x01},
+ {0x3366, 0x09},
+ {0x3367, 0x00},
+ {0x3368, 0x05},
+ {0x3369, 0x10},
+};
+
+/* Mode configs. Keep separate lists for when HDR is enabled or not. */
+static const struct imx708_mode supported_modes_10bit_no_hdr[] = {
+ {
+ /* Full resolution. */
+ .width = 4608,
+ .height = 2592,
+ .line_length_pix = 0x3d20,
+ .crop = {
+ .left = IMX708_PIXEL_ARRAY_LEFT,
+ .top = IMX708_PIXEL_ARRAY_TOP,
+ .width = 4608,
+ .height = 2592,
+ },
+ .vblank_min = 58,
+ .vblank_default = 58,
+ .reg_list = {
+ .num_of_regs = ARRAY_SIZE(mode_4608x2592_regs),
+ .regs = mode_4608x2592_regs,
+ },
+ .pixel_rate = 595200000,
+ .exposure_lines_min = 8,
+ .exposure_lines_step = 1,
+ .hdr = false
+ },
+ {
+ /* regular 2x2 binned. */
+ .width = 2304,
+ .height = 1296,
+ .line_length_pix = 0x1e90,
+ .crop = {
+ .left = IMX708_PIXEL_ARRAY_LEFT,
+ .top = IMX708_PIXEL_ARRAY_TOP,
+ .width = 4608,
+ .height = 2592,
+ },
+ .vblank_min = 40,
+ .vblank_default = 1198,
+ .reg_list = {
+ .num_of_regs = ARRAY_SIZE(mode_2x2binned_regs),
+ .regs = mode_2x2binned_regs,
+ },
+ .pixel_rate = 585600000,
+ .exposure_lines_min = 4,
+ .exposure_lines_step = 2,
+ .hdr = false
+ },
+ {
+ /* 2x2 binned and cropped for 720p. */
+ .width = 1536,
+ .height = 864,
+ .line_length_pix = 0x1460,
+ .crop = {
+ .left = IMX708_PIXEL_ARRAY_LEFT,
+ .top = IMX708_PIXEL_ARRAY_TOP,
+ .width = 4608,
+ .height = 2592,
+ },
+ .vblank_min = 40,
+ .vblank_default = 2755,
+ .reg_list = {
+ .num_of_regs = ARRAY_SIZE(mode_2x2binned_720p_regs),
+ .regs = mode_2x2binned_720p_regs,
+ },
+ .pixel_rate = 566400000,
+ .exposure_lines_min = 4,
+ .exposure_lines_step = 2,
+ .hdr = false
+ },
+};
+
+static const struct imx708_mode supported_modes_10bit_hdr[] = {
+ {
+ /* There's only one HDR mode, which is 2x2 downscaled */
+ .width = 2304,
+ .height = 1296,
+ .line_length_pix = 0x1460,
+ .crop = {
+ .left = IMX708_PIXEL_ARRAY_LEFT,
+ .top = IMX708_PIXEL_ARRAY_TOP,
+ .width = 4608,
+ .height = 2592,
+ },
+ .vblank_min = 3673,
+ .vblank_default = 3673,
+ .reg_list = {
+ .num_of_regs = ARRAY_SIZE(mode_hdr_regs),
+ .regs = mode_hdr_regs,
+ },
+ .pixel_rate = 777600000,
+ .exposure_lines_min = 8 * IMX708_HDR_EXPOSURE_RATIO * IMX708_HDR_EXPOSURE_RATIO,
+ .exposure_lines_step = 2 * IMX708_HDR_EXPOSURE_RATIO * IMX708_HDR_EXPOSURE_RATIO,
+ .hdr = true
+ }
+};
+
+/*
+ * The supported formats.
+ * This table MUST contain 4 entries per format, to cover the various flip
+ * combinations in the order
+ * - no flip
+ * - h flip
+ * - v flip
+ * - h&v flips
+ */
+static const u32 codes[] = {
+ /* 10-bit modes. */
+ MEDIA_BUS_FMT_SRGGB10_1X10,
+ MEDIA_BUS_FMT_SGRBG10_1X10,
+ MEDIA_BUS_FMT_SGBRG10_1X10,
+ MEDIA_BUS_FMT_SBGGR10_1X10,
+};
+
+static const char * const imx708_test_pattern_menu[] = {
+ "Disabled",
+ "Color Bars",
+ "Solid Color",
+ "Grey Color Bars",
+ "PN9"
+};
+
+static const int imx708_test_pattern_val[] = {
+ IMX708_TEST_PATTERN_DISABLE,
+ IMX708_TEST_PATTERN_COLOR_BARS,
+ IMX708_TEST_PATTERN_SOLID_COLOR,
+ IMX708_TEST_PATTERN_GREY_COLOR,
+ IMX708_TEST_PATTERN_PN9,
+};
+
+/* regulator supplies */
+static const char * const imx708_supply_name[] = {
+ /* Supplies can be enabled in any order */
+ "VANA1", /* Analog1 (2.8V) supply */
+ "VANA2", /* Analog2 (1.8V) supply */
+ "VDIG", /* Digital Core (1.1V) supply */
+ "VDDL", /* IF (1.8V) supply */
+};
+
+#define IMX708_NUM_SUPPLIES ARRAY_SIZE(imx708_supply_name)
+
+/*
+ * Initialisation delay between XCLR low->high and the moment when the sensor
+ * can start capture (i.e. can leave software standby), given by T7 in the
+ * datasheet is 8ms. This does include I2C setup time as well.
+ *
+ * Note, that delay between XCLR low->high and reading the CCI ID register (T6
+ * in the datasheet) is much smaller - 600us.
+ */
+#define IMX708_XCLR_MIN_DELAY_US 8000
+#define IMX708_XCLR_DELAY_RANGE_US 1000
+
+struct imx708 {
+ struct v4l2_subdev sd;
+ struct media_pad pad[NUM_PADS];
+
+ struct v4l2_mbus_framefmt fmt;
+
+ struct clk *xclk;
+ u32 xclk_freq;
+
+ struct gpio_desc *reset_gpio;
+ struct regulator_bulk_data supplies[IMX708_NUM_SUPPLIES];
+
+ struct v4l2_ctrl_handler ctrl_handler;
+ /* V4L2 Controls */
+ struct v4l2_ctrl *pixel_rate;
+ struct v4l2_ctrl *exposure;
+ struct v4l2_ctrl *vflip;
+ struct v4l2_ctrl *hflip;
+ struct v4l2_ctrl *vblank;
+ struct v4l2_ctrl *hblank;
+ struct v4l2_ctrl *red_balance;
+ struct v4l2_ctrl *blue_balance;
+ struct v4l2_ctrl *notify_gains;
+ struct v4l2_ctrl *hdr_mode;
+
+ /* Current mode */
+ const struct imx708_mode *mode;
+
+ /*
+ * Mutex for serialized access:
+ * Protect sensor module set pad format and start/stop streaming safely.
+ */
+ struct mutex mutex;
+
+ /* Streaming on/off */
+ bool streaming;
+
+ /* Rewrite common registers on stream on? */
+ bool common_regs_written;
+};
+
+static inline struct imx708 *to_imx708(struct v4l2_subdev *_sd)
+{
+ return container_of(_sd, struct imx708, sd);
+}
+
+static inline void get_mode_table(unsigned int code,
+ const struct imx708_mode **mode_list,
+ unsigned int *num_modes,
+ bool hdr_enable)
+{
+ switch (code) {
+ /* 10-bit */
+ case MEDIA_BUS_FMT_SRGGB10_1X10:
+ case MEDIA_BUS_FMT_SGRBG10_1X10:
+ case MEDIA_BUS_FMT_SGBRG10_1X10:
+ case MEDIA_BUS_FMT_SBGGR10_1X10:
+ if (hdr_enable) {
+ *mode_list = supported_modes_10bit_hdr;
+ *num_modes = ARRAY_SIZE(supported_modes_10bit_hdr);
+ } else {
+ *mode_list = supported_modes_10bit_no_hdr;
+ *num_modes = ARRAY_SIZE(supported_modes_10bit_no_hdr);
+ }
+ break;
+ default:
+ *mode_list = NULL;
+ *num_modes = 0;
+ }
+}
+
+/* Read registers up to 2 at a time */
+static int imx708_read_reg(struct imx708 *imx708, u16 reg, u32 len, u32 *val)
+{
+ struct i2c_client *client = v4l2_get_subdevdata(&imx708->sd);
+ struct i2c_msg msgs[2];
+ u8 addr_buf[2] = { reg >> 8, reg & 0xff };
+ u8 data_buf[4] = { 0, };
+ int ret;
+
+ if (len > 4)
+ return -EINVAL;
+
+ /* Write register address */
+ msgs[0].addr = client->addr;
+ msgs[0].flags = 0;
+ msgs[0].len = ARRAY_SIZE(addr_buf);
+ msgs[0].buf = addr_buf;
+
+ /* Read data from register */
+ msgs[1].addr = client->addr;
+ msgs[1].flags = I2C_M_RD;
+ msgs[1].len = len;
+ msgs[1].buf = &data_buf[4 - len];
+
+ ret = i2c_transfer(client->adapter, msgs, ARRAY_SIZE(msgs));
+ if (ret != ARRAY_SIZE(msgs))
+ return -EIO;
+
+ *val = get_unaligned_be32(data_buf);
+
+ return 0;
+}
+
+/* Write registers up to 2 at a time */
+static int imx708_write_reg(struct imx708 *imx708, u16 reg, u32 len, u32 val)
+{
+ struct i2c_client *client = v4l2_get_subdevdata(&imx708->sd);
+ u8 buf[6];
+
+ if (len > 4)
+ return -EINVAL;
+
+ put_unaligned_be16(reg, buf);
+ put_unaligned_be32(val << (8 * (4 - len)), buf + 2);
+ if (i2c_master_send(client, buf, len + 2) != len + 2)
+ return -EIO;
+
+ return 0;
+}
+
+/* Write a list of registers */
+static int imx708_write_regs(struct imx708 *imx708,
+ const struct imx708_reg *regs, u32 len)
+{
+ struct i2c_client *client = v4l2_get_subdevdata(&imx708->sd);
+ unsigned int i;
+ int ret;
+
+ for (i = 0; i < len; i++) {
+ ret = imx708_write_reg(imx708, regs[i].address, 1, regs[i].val);
+ if (ret) {
+ dev_err_ratelimited(&client->dev,
+ "Failed to write reg 0x%4.4x. error = %d\n",
+ regs[i].address, ret);
+
+ return ret;
+ }
+ }
+
+ return 0;
+}
+
+/* Get bayer order based on flip setting. */
+static u32 imx708_get_format_code(struct imx708 *imx708)
+{
+ unsigned int i;
+
+ lockdep_assert_held(&imx708->mutex);
+
+ i = (imx708->vflip->val ? 2 : 0) |
+ (imx708->hflip->val ? 1 : 0);
+
+ return codes[i];
+}
+
+static void imx708_set_default_format(struct imx708 *imx708)
+{
+ struct v4l2_mbus_framefmt *fmt = &imx708->fmt;
+
+ /* Set default mode to max resolution */
+ imx708->mode = &supported_modes_10bit_no_hdr[0];
+
+ /* fmt->code not set as it will always be computed based on flips */
+ fmt->colorspace = V4L2_COLORSPACE_RAW;
+ fmt->ycbcr_enc = V4L2_MAP_YCBCR_ENC_DEFAULT(fmt->colorspace);
+ fmt->quantization = V4L2_MAP_QUANTIZATION_DEFAULT(true,
+ fmt->colorspace,
+ fmt->ycbcr_enc);
+ fmt->xfer_func = V4L2_MAP_XFER_FUNC_DEFAULT(fmt->colorspace);
+ fmt->width = imx708->mode->width;
+ fmt->height = imx708->mode->height;
+ fmt->field = V4L2_FIELD_NONE;
+}
+
+static int imx708_open(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh)
+{
+ struct imx708 *imx708 = to_imx708(sd);
+ struct v4l2_mbus_framefmt *try_fmt_img =
+ v4l2_subdev_get_try_format(sd, fh->state, IMAGE_PAD);
+ struct v4l2_mbus_framefmt *try_fmt_meta =
+ v4l2_subdev_get_try_format(sd, fh->state, METADATA_PAD);
+ struct v4l2_rect *try_crop;
+
+ mutex_lock(&imx708->mutex);
+
+ /* Initialize try_fmt for the image pad */
+ if (imx708->hdr_mode->val) {
+ try_fmt_img->width = supported_modes_10bit_hdr[0].width;
+ try_fmt_img->height = supported_modes_10bit_hdr[0].height;
+ } else {
+ try_fmt_img->width = supported_modes_10bit_no_hdr[0].width;
+ try_fmt_img->height = supported_modes_10bit_no_hdr[0].height;
+ }
+ try_fmt_img->code = imx708_get_format_code(imx708);
+ try_fmt_img->field = V4L2_FIELD_NONE;
+
+ /* Initialize try_fmt for the embedded metadata pad */
+ try_fmt_meta->width = IMX708_EMBEDDED_LINE_WIDTH;
+ try_fmt_meta->height = IMX708_NUM_EMBEDDED_LINES;
+ try_fmt_meta->code = MEDIA_BUS_FMT_SENSOR_DATA;
+ try_fmt_meta->field = V4L2_FIELD_NONE;
+
+ /* Initialize try_crop */
+ try_crop = v4l2_subdev_get_try_crop(sd, fh->state, IMAGE_PAD);
+ try_crop->left = IMX708_PIXEL_ARRAY_LEFT;
+ try_crop->top = IMX708_PIXEL_ARRAY_TOP;
+ try_crop->width = IMX708_PIXEL_ARRAY_WIDTH;
+ try_crop->height = IMX708_PIXEL_ARRAY_HEIGHT;
+
+ mutex_unlock(&imx708->mutex);
+
+ return 0;
+}
+
+static int imx708_set_exposure(struct imx708 *imx708, unsigned int val)
+{
+ int ret;
+
+ val = max(val, imx708->mode->exposure_lines_min);
+ val -= val % imx708->mode->exposure_lines_step;
+
+ /*
+ * In HDR mode this will set the longest exposure. The sensor
+ * will automatically divide the medium and short ones by 4,16.
+ */
+ ret = imx708_write_reg(imx708, IMX708_REG_EXPOSURE,
+ IMX708_REG_VALUE_16BIT, val);
+
+ return ret;
+}
+
+static void imx708_adjust_exposure_range(struct imx708 *imx708,
+ struct v4l2_ctrl *ctrl)
+{
+ int exposure_max, exposure_def;
+
+ /* Honour the VBLANK limits when setting exposure. */
+ exposure_max = imx708->mode->height + imx708->vblank->val -
+ IMX708_EXPOSURE_OFFSET;
+ exposure_def = min(exposure_max, imx708->exposure->val);
+ __v4l2_ctrl_modify_range(imx708->exposure, imx708->exposure->minimum,
+ exposure_max, imx708->exposure->step,
+ exposure_def);
+}
+
+static int imx708_set_analogue_gain(struct imx708 *imx708, unsigned int val)
+{
+ int ret;
+
+ /*
+ * In HDR mode this will set the gain for the longest exposure,
+ * and by default the sensor uses the same gain for all of them.
+ */
+ ret = imx708_write_reg(imx708, IMX708_REG_ANALOG_GAIN,
+ IMX708_REG_VALUE_16BIT, val);
+
+ return ret;
+}
+
+static void imx708_set_framing_limits(struct imx708 *imx708)
+{
+ unsigned int hblank;
+ const struct imx708_mode *mode = imx708->mode;
+
+ __v4l2_ctrl_modify_range(imx708->pixel_rate,
+ mode->pixel_rate, mode->pixel_rate,
+ 1, mode->pixel_rate);
+
+ /* Update limits and set FPS to default */
+ __v4l2_ctrl_modify_range(imx708->vblank, mode->vblank_min,
+ IMX708_FRAME_LENGTH_MAX - mode->height,
+ 1, mode->vblank_default);
+
+ /*
+ * Currently PPL is fixed to the mode specified value, so hblank
+ * depends on mode->width only, and is not changeable in any
+ * way other than changing the mode.
+ */
+ hblank = mode->line_length_pix - mode->width;
+ __v4l2_ctrl_modify_range(imx708->hblank, hblank, hblank, 1, hblank);
+}
+
+static int imx708_set_ctrl(struct v4l2_ctrl *ctrl)
+{
+ struct imx708 *imx708 =
+ container_of(ctrl->handler, struct imx708, ctrl_handler);
+ struct i2c_client *client = v4l2_get_subdevdata(&imx708->sd);
+ const struct imx708_mode *mode_list;
+ unsigned int code, num_modes;
+ int ret = 0;
+
+ /*
+ * The VBLANK control may change the limits of usable exposure, so check
+ * and adjust if necessary.
+ */
+ if (ctrl->id == V4L2_CID_VBLANK)
+ imx708_adjust_exposure_range(imx708, ctrl);
+
+ /*
+ * Applying V4L2 control value only happens
+ * when power is up for streaming
+ */
+ if (pm_runtime_get_if_in_use(&client->dev) == 0)
+ return 0;
+
+ switch (ctrl->id) {
+ case V4L2_CID_ANALOGUE_GAIN:
+ imx708_set_analogue_gain(imx708, ctrl->val);
+ break;
+ case V4L2_CID_EXPOSURE:
+ ret = imx708_set_exposure(imx708, ctrl->val);
+ break;
+ case V4L2_CID_DIGITAL_GAIN:
+ ret = imx708_write_reg(imx708, IMX708_REG_DIGITAL_GAIN,
+ IMX708_REG_VALUE_16BIT, ctrl->val);
+ break;
+ case V4L2_CID_TEST_PATTERN:
+ ret = imx708_write_reg(imx708, IMX708_REG_TEST_PATTERN,
+ IMX708_REG_VALUE_16BIT,
+ imx708_test_pattern_val[ctrl->val]);
+ break;
+ case V4L2_CID_TEST_PATTERN_RED:
+ ret = imx708_write_reg(imx708, IMX708_REG_TEST_PATTERN_R,
+ IMX708_REG_VALUE_16BIT, ctrl->val);
+ break;
+ case V4L2_CID_TEST_PATTERN_GREENR:
+ ret = imx708_write_reg(imx708, IMX708_REG_TEST_PATTERN_GR,
+ IMX708_REG_VALUE_16BIT, ctrl->val);
+ break;
+ case V4L2_CID_TEST_PATTERN_BLUE:
+ ret = imx708_write_reg(imx708, IMX708_REG_TEST_PATTERN_B,
+ IMX708_REG_VALUE_16BIT, ctrl->val);
+ break;
+ case V4L2_CID_TEST_PATTERN_GREENB:
+ ret = imx708_write_reg(imx708, IMX708_REG_TEST_PATTERN_GB,
+ IMX708_REG_VALUE_16BIT, ctrl->val);
+ break;
+ case V4L2_CID_HFLIP:
+ case V4L2_CID_VFLIP:
+ ret = imx708_write_reg(imx708, IMX708_REG_ORIENTATION, 1,
+ imx708->hflip->val |
+ imx708->vflip->val << 1);
+ break;
+ case V4L2_CID_VBLANK:
+ ret = imx708_write_reg(imx708, IMX708_REG_FRAME_LENGTH,
+ IMX708_REG_VALUE_16BIT,
+ imx708->mode->height + ctrl->val);
+ break;
+ case V4L2_CID_NOTIFY_GAINS:
+ ret = imx708_write_reg(imx708, IMX708_REG_COLOUR_BALANCE_BLUE,
+ IMX708_REG_VALUE_16BIT,
+ imx708->notify_gains->p_new.p_u32[0]);
+ if (ret)
+ break;
+ ret = imx708_write_reg(imx708, IMX708_REG_COLOUR_BALANCE_RED,
+ IMX708_REG_VALUE_16BIT,
+ imx708->notify_gains->p_new.p_u32[3]);
+ break;
+ case V4L2_CID_WIDE_DYNAMIC_RANGE:
+ code = imx708_get_format_code(imx708);
+ get_mode_table(code, &mode_list, &num_modes, ctrl->val);
+ imx708->mode = v4l2_find_nearest_size(mode_list,
+ num_modes,
+ width, height,
+ imx708->mode->width,
+ imx708->mode->height);
+ imx708_set_framing_limits(imx708);
+ break;
+ default:
+ dev_info(&client->dev,
+ "ctrl(id:0x%x,val:0x%x) is not handled\n",
+ ctrl->id, ctrl->val);
+ ret = -EINVAL;
+ break;
+ }
+
+ pm_runtime_put(&client->dev);
+
+ return ret;
+}
+
+static const struct v4l2_ctrl_ops imx708_ctrl_ops = {
+ .s_ctrl = imx708_set_ctrl,
+};
+
+static int imx708_enum_mbus_code(struct v4l2_subdev *sd,
+ struct v4l2_subdev_state *sd_state,
+ struct v4l2_subdev_mbus_code_enum *code)
+{
+ struct imx708 *imx708 = to_imx708(sd);
+
+ if (code->pad >= NUM_PADS)
+ return -EINVAL;
+
+ if (code->pad == IMAGE_PAD) {
+ if (code->index >= (ARRAY_SIZE(codes) / 4))
+ return -EINVAL;
+
+ code->code = imx708_get_format_code(imx708);
+ } else {
+ if (code->index > 0)
+ return -EINVAL;
+
+ code->code = MEDIA_BUS_FMT_SENSOR_DATA;
+ }
+
+ return 0;
+}
+
+static int imx708_enum_frame_size(struct v4l2_subdev *sd,
+ struct v4l2_subdev_state *sd_state,
+ struct v4l2_subdev_frame_size_enum *fse)
+{
+ struct imx708 *imx708 = to_imx708(sd);
+
+ if (fse->pad >= NUM_PADS)
+ return -EINVAL;
+
+ if (fse->pad == IMAGE_PAD) {
+ const struct imx708_mode *mode_list;
+ unsigned int num_modes;
+
+ get_mode_table(fse->code, &mode_list, &num_modes,
+ imx708->hdr_mode->val);
+
+ if (fse->index >= num_modes)
+ return -EINVAL;
+
+ if (fse->code != imx708_get_format_code(imx708))
+ return -EINVAL;
+
+ fse->min_width = mode_list[fse->index].width;
+ fse->max_width = fse->min_width;
+ fse->min_height = mode_list[fse->index].height;
+ fse->max_height = fse->min_height;
+ } else {
+ if (fse->code != MEDIA_BUS_FMT_SENSOR_DATA || fse->index > 0)
+ return -EINVAL;
+
+ fse->min_width = IMX708_EMBEDDED_LINE_WIDTH;
+ fse->max_width = fse->min_width;
+ fse->min_height = IMX708_NUM_EMBEDDED_LINES;
+ fse->max_height = fse->min_height;
+ }
+
+ return 0;
+}
+
+static void imx708_reset_colorspace(struct v4l2_mbus_framefmt *fmt)
+{
+ fmt->colorspace = V4L2_COLORSPACE_RAW;
+ fmt->ycbcr_enc = V4L2_MAP_YCBCR_ENC_DEFAULT(fmt->colorspace);
+ fmt->quantization = V4L2_MAP_QUANTIZATION_DEFAULT(true,
+ fmt->colorspace,
+ fmt->ycbcr_enc);
+ fmt->xfer_func = V4L2_MAP_XFER_FUNC_DEFAULT(fmt->colorspace);
+}
+
+static void imx708_update_image_pad_format(struct imx708 *imx708,
+ const struct imx708_mode *mode,
+ struct v4l2_subdev_format *fmt)
+{
+ fmt->format.width = mode->width;
+ fmt->format.height = mode->height;
+ fmt->format.field = V4L2_FIELD_NONE;
+ imx708_reset_colorspace(&fmt->format);
+}
+
+static void imx708_update_metadata_pad_format(struct v4l2_subdev_format *fmt)
+{
+ fmt->format.width = IMX708_EMBEDDED_LINE_WIDTH;
+ fmt->format.height = IMX708_NUM_EMBEDDED_LINES;
+ fmt->format.code = MEDIA_BUS_FMT_SENSOR_DATA;
+ fmt->format.field = V4L2_FIELD_NONE;
+}
+
+static int imx708_get_pad_format(struct v4l2_subdev *sd,
+ struct v4l2_subdev_state *sd_state,
+ struct v4l2_subdev_format *fmt)
+{
+ struct imx708 *imx708 = to_imx708(sd);
+
+ if (fmt->pad >= NUM_PADS)
+ return -EINVAL;
+
+ mutex_lock(&imx708->mutex);
+
+ if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
+ struct v4l2_mbus_framefmt *try_fmt =
+ v4l2_subdev_get_try_format(&imx708->sd, sd_state,
+ fmt->pad);
+ /* update the code which could change due to vflip or hflip */
+ try_fmt->code = fmt->pad == IMAGE_PAD ?
+ imx708_get_format_code(imx708) :
+ MEDIA_BUS_FMT_SENSOR_DATA;
+ fmt->format = *try_fmt;
+ } else {
+ if (fmt->pad == IMAGE_PAD) {
+ imx708_update_image_pad_format(imx708, imx708->mode,
+ fmt);
+ fmt->format.code = imx708_get_format_code(imx708);
+ } else {
+ imx708_update_metadata_pad_format(fmt);
+ }
+ }
+
+ mutex_unlock(&imx708->mutex);
+ return 0;
+}
+
+static int imx708_set_pad_format(struct v4l2_subdev *sd,
+ struct v4l2_subdev_state *sd_state,
+ struct v4l2_subdev_format *fmt)
+{
+ struct v4l2_mbus_framefmt *framefmt;
+ const struct imx708_mode *mode;
+ struct imx708 *imx708 = to_imx708(sd);
+
+ if (fmt->pad >= NUM_PADS)
+ return -EINVAL;
+
+ mutex_lock(&imx708->mutex);
+
+ if (fmt->pad == IMAGE_PAD) {
+ const struct imx708_mode *mode_list;
+ unsigned int num_modes;
+
+ /* Bayer order varies with flips */
+ fmt->format.code = imx708_get_format_code(imx708);
+
+ get_mode_table(fmt->format.code, &mode_list, &num_modes,
+ imx708->hdr_mode->val);
+
+ mode = v4l2_find_nearest_size(mode_list,
+ num_modes,
+ width, height,
+ fmt->format.width,
+ fmt->format.height);
+ imx708_update_image_pad_format(imx708, mode, fmt);
+ if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
+ framefmt = v4l2_subdev_get_try_format(sd, sd_state,
+ fmt->pad);
+ *framefmt = fmt->format;
+ } else {
+ imx708->mode = mode;
+ imx708_set_framing_limits(imx708);
+ }
+ } else {
+ if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
+ framefmt = v4l2_subdev_get_try_format(sd, sd_state,
+ fmt->pad);
+ *framefmt = fmt->format;
+ } else {
+ /* Only one embedded data mode is supported */
+ imx708_update_metadata_pad_format(fmt);
+ }
+ }
+
+ mutex_unlock(&imx708->mutex);
+
+ return 0;
+}
+
+static const struct v4l2_rect *
+__imx708_get_pad_crop(struct imx708 *imx708, struct v4l2_subdev_state *sd_state,
+ unsigned int pad, enum v4l2_subdev_format_whence which)
+{
+ switch (which) {
+ case V4L2_SUBDEV_FORMAT_TRY:
+ return v4l2_subdev_get_try_crop(&imx708->sd, sd_state, pad);
+ case V4L2_SUBDEV_FORMAT_ACTIVE:
+ return &imx708->mode->crop;
+ }
+
+ return NULL;
+}
+
+static int imx708_get_selection(struct v4l2_subdev *sd,
+ struct v4l2_subdev_state *sd_state,
+ struct v4l2_subdev_selection *sel)
+{
+ switch (sel->target) {
+ case V4L2_SEL_TGT_CROP: {
+ struct imx708 *imx708 = to_imx708(sd);
+
+ mutex_lock(&imx708->mutex);
+ sel->r = *__imx708_get_pad_crop(imx708, sd_state, sel->pad,
+ sel->which);
+ mutex_unlock(&imx708->mutex);
+
+ return 0;
+ }
+
+ case V4L2_SEL_TGT_NATIVE_SIZE:
+ sel->r.left = 0;
+ sel->r.top = 0;
+ sel->r.width = IMX708_NATIVE_WIDTH;
+ sel->r.height = IMX708_NATIVE_HEIGHT;
+
+ return 0;
+
+ case V4L2_SEL_TGT_CROP_DEFAULT:
+ case V4L2_SEL_TGT_CROP_BOUNDS:
+ sel->r.left = IMX708_PIXEL_ARRAY_LEFT;
+ sel->r.top = IMX708_PIXEL_ARRAY_TOP;
+ sel->r.width = IMX708_PIXEL_ARRAY_WIDTH;
+ sel->r.height = IMX708_PIXEL_ARRAY_HEIGHT;
+
+ return 0;
+ }
+
+ return -EINVAL;
+}
+
+/* Start streaming */
+static int imx708_start_streaming(struct imx708 *imx708)
+{
+ struct i2c_client *client = v4l2_get_subdevdata(&imx708->sd);
+ const struct imx708_reg_list *reg_list;
+ int i, ret;
+ u32 val;
+
+ if (!imx708->common_regs_written) {
+ ret = imx708_write_regs(imx708, mode_common_regs,
+ ARRAY_SIZE(mode_common_regs));
+ if (ret) {
+ dev_err(&client->dev, "%s failed to set common settings\n",
+ __func__);
+ return ret;
+ }
+
+ ret = imx708_read_reg(imx708, IMX708_REG_BASE_SPC_GAINS_L,
+ IMX708_REG_VALUE_08BIT, &val);
+ if (ret == 0 && val == 0x40) {
+ for (i = 0; i < 54 && ret == 0; i++) {
+ ret = imx708_write_reg(imx708,
+ IMX708_REG_BASE_SPC_GAINS_L + i,
+ IMX708_REG_VALUE_08BIT,
+ pdaf_gains[0][i % 9]);
+ }
+ for (i = 0; i < 54 && ret == 0; i++) {
+ ret = imx708_write_reg(imx708,
+ IMX708_REG_BASE_SPC_GAINS_R + i,
+ IMX708_REG_VALUE_08BIT,
+ pdaf_gains[1][i % 9]);
+ }
+ }
+ if (ret) {
+ dev_err(&client->dev, "%s failed to set PDAF gains\n",
+ __func__);
+ return ret;
+ }
+
+ imx708->common_regs_written = true;
+ }
+
+ /* Apply default values of current mode */
+ reg_list = &imx708->mode->reg_list;
+ ret = imx708_write_regs(imx708, reg_list->regs, reg_list->num_of_regs);
+ if (ret) {
+ dev_err(&client->dev, "%s failed to set mode\n", __func__);
+ return ret;
+ }
+
+ /* Apply customized values from user */
+ ret = __v4l2_ctrl_handler_setup(imx708->sd.ctrl_handler);
+ if (ret)
+ return ret;
+
+ /* set stream on register */
+ return imx708_write_reg(imx708, IMX708_REG_MODE_SELECT,
+ IMX708_REG_VALUE_08BIT, IMX708_MODE_STREAMING);
+}
+
+/* Stop streaming */
+static void imx708_stop_streaming(struct imx708 *imx708)
+{
+ struct i2c_client *client = v4l2_get_subdevdata(&imx708->sd);
+ int ret;
+
+ /* set stream off register */
+ ret = imx708_write_reg(imx708, IMX708_REG_MODE_SELECT,
+ IMX708_REG_VALUE_08BIT, IMX708_MODE_STANDBY);
+ if (ret)
+ dev_err(&client->dev, "%s failed to set stream\n", __func__);
+}
+
+static int imx708_set_stream(struct v4l2_subdev *sd, int enable)
+{
+ struct imx708 *imx708 = to_imx708(sd);
+ struct i2c_client *client = v4l2_get_subdevdata(sd);
+ int ret = 0;
+
+ mutex_lock(&imx708->mutex);
+ if (imx708->streaming == enable) {
+ mutex_unlock(&imx708->mutex);
+ return 0;
+ }
+
+ if (enable) {
+ ret = pm_runtime_get_sync(&client->dev);
+ if (ret < 0) {
+ pm_runtime_put_noidle(&client->dev);
+ goto err_unlock;
+ }
+
+ /*
+ * Apply default & customized values
+ * and then start streaming.
+ */
+ ret = imx708_start_streaming(imx708);
+ if (ret)
+ goto err_rpm_put;
+ } else {
+ imx708_stop_streaming(imx708);
+ pm_runtime_put(&client->dev);
+ }
+
+ imx708->streaming = enable;
+
+ /* vflip/hflip and hdr mode cannot change during streaming */
+ __v4l2_ctrl_grab(imx708->vflip, enable);
+ __v4l2_ctrl_grab(imx708->hflip, enable);
+ __v4l2_ctrl_grab(imx708->hdr_mode, enable);
+
+ mutex_unlock(&imx708->mutex);
+
+ return ret;
+
+err_rpm_put:
+ pm_runtime_put(&client->dev);
+err_unlock:
+ mutex_unlock(&imx708->mutex);
+
+ return ret;
+}
+
+/* Power/clock management functions */
+static int imx708_power_on(struct device *dev)
+{
+ struct i2c_client *client = to_i2c_client(dev);
+ struct v4l2_subdev *sd = i2c_get_clientdata(client);
+ struct imx708 *imx708 = to_imx708(sd);
+ int ret;
+
+ ret = regulator_bulk_enable(IMX708_NUM_SUPPLIES,
+ imx708->supplies);
+ if (ret) {
+ dev_err(&client->dev, "%s: failed to enable regulators\n",
+ __func__);
+ return ret;
+ }
+
+ ret = clk_prepare_enable(imx708->xclk);
+ if (ret) {
+ dev_err(&client->dev, "%s: failed to enable clock\n",
+ __func__);
+ goto reg_off;
+ }
+
+ gpiod_set_value_cansleep(imx708->reset_gpio, 1);
+ usleep_range(IMX708_XCLR_MIN_DELAY_US,
+ IMX708_XCLR_MIN_DELAY_US + IMX708_XCLR_DELAY_RANGE_US);
+
+ return 0;
+
+reg_off:
+ regulator_bulk_disable(IMX708_NUM_SUPPLIES, imx708->supplies);
+ return ret;
+}
+
+static int imx708_power_off(struct device *dev)
+{
+ struct i2c_client *client = to_i2c_client(dev);
+ struct v4l2_subdev *sd = i2c_get_clientdata(client);
+ struct imx708 *imx708 = to_imx708(sd);
+
+ gpiod_set_value_cansleep(imx708->reset_gpio, 0);
+ regulator_bulk_disable(IMX708_NUM_SUPPLIES, imx708->supplies);
+ clk_disable_unprepare(imx708->xclk);
+
+ /* Force reprogramming of the common registers when powered up again. */
+ imx708->common_regs_written = false;
+
+ return 0;
+}
+
+static int __maybe_unused imx708_suspend(struct device *dev)
+{
+ struct i2c_client *client = to_i2c_client(dev);
+ struct v4l2_subdev *sd = i2c_get_clientdata(client);
+ struct imx708 *imx708 = to_imx708(sd);
+
+ if (imx708->streaming)
+ imx708_stop_streaming(imx708);
+
+ return 0;
+}
+
+static int __maybe_unused imx708_resume(struct device *dev)
+{
+ struct i2c_client *client = to_i2c_client(dev);
+ struct v4l2_subdev *sd = i2c_get_clientdata(client);
+ struct imx708 *imx708 = to_imx708(sd);
+ int ret;
+
+ if (imx708->streaming) {
+ ret = imx708_start_streaming(imx708);
+ if (ret)
+ goto error;
+ }
+
+ return 0;
+
+error:
+ imx708_stop_streaming(imx708);
+ imx708->streaming = 0;
+ return ret;
+}
+
+static int imx708_get_regulators(struct imx708 *imx708)
+{
+ struct i2c_client *client = v4l2_get_subdevdata(&imx708->sd);
+ unsigned int i;
+
+ for (i = 0; i < IMX708_NUM_SUPPLIES; i++)
+ imx708->supplies[i].supply = imx708_supply_name[i];
+
+ return devm_regulator_bulk_get(&client->dev,
+ IMX708_NUM_SUPPLIES,
+ imx708->supplies);
+}
+
+/* Verify chip ID */
+static int imx708_identify_module(struct imx708 *imx708)
+{
+ struct i2c_client *client = v4l2_get_subdevdata(&imx708->sd);
+ int ret;
+ u32 val;
+
+ ret = imx708_read_reg(imx708, IMX708_REG_CHIP_ID,
+ IMX708_REG_VALUE_16BIT, &val);
+ if (ret) {
+ dev_err(&client->dev, "failed to read chip id %x, with error %d\n",
+ IMX708_CHIP_ID, ret);
+ return ret;
+ }
+
+ if (val != IMX708_CHIP_ID) {
+ dev_err(&client->dev, "chip id mismatch: %x!=%x\n",
+ IMX708_CHIP_ID, val);
+ return -EIO;
+ }
+
+ ret = imx708_read_reg(imx708, 0x0000, IMX708_REG_VALUE_16BIT, &val);
+ if (!ret) {
+ dev_info(&client->dev, "camera module ID 0x%04x\n", val);
+ snprintf(imx708->sd.name, sizeof(imx708->sd.name), "imx708%s%s",
+ val & 0x02 ? "_wide" : "",
+ val & 0x80 ? "_noir" : "");
+ }
+
+ return 0;
+}
+
+static const struct v4l2_subdev_core_ops imx708_core_ops = {
+ .subscribe_event = v4l2_ctrl_subdev_subscribe_event,
+ .unsubscribe_event = v4l2_event_subdev_unsubscribe,
+};
+
+static const struct v4l2_subdev_video_ops imx708_video_ops = {
+ .s_stream = imx708_set_stream,
+};
+
+static const struct v4l2_subdev_pad_ops imx708_pad_ops = {
+ .enum_mbus_code = imx708_enum_mbus_code,
+ .get_fmt = imx708_get_pad_format,
+ .set_fmt = imx708_set_pad_format,
+ .get_selection = imx708_get_selection,
+ .enum_frame_size = imx708_enum_frame_size,
+};
+
+static const struct v4l2_subdev_ops imx708_subdev_ops = {
+ .core = &imx708_core_ops,
+ .video = &imx708_video_ops,
+ .pad = &imx708_pad_ops,
+};
+
+static const struct v4l2_subdev_internal_ops imx708_internal_ops = {
+ .open = imx708_open,
+};
+
+static const struct v4l2_ctrl_config imx708_notify_gains_ctrl = {
+ .ops = &imx708_ctrl_ops,
+ .id = V4L2_CID_NOTIFY_GAINS,
+ .type = V4L2_CTRL_TYPE_U32,
+ .min = IMX708_COLOUR_BALANCE_MIN,
+ .max = IMX708_COLOUR_BALANCE_MAX,
+ .step = IMX708_COLOUR_BALANCE_STEP,
+ .def = IMX708_COLOUR_BALANCE_DEFAULT,
+ .dims = { 4 },
+ .elem_size = sizeof(u32),
+};
+
+/* Initialize control handlers */
+static int imx708_init_controls(struct imx708 *imx708)
+{
+ struct v4l2_ctrl_handler *ctrl_hdlr;
+ struct i2c_client *client = v4l2_get_subdevdata(&imx708->sd);
+ struct v4l2_fwnode_device_properties props;
+ unsigned int i;
+ int ret;
+
+ ctrl_hdlr = &imx708->ctrl_handler;
+ ret = v4l2_ctrl_handler_init(ctrl_hdlr, 16);
+ if (ret)
+ return ret;
+
+ mutex_init(&imx708->mutex);
+ ctrl_hdlr->lock = &imx708->mutex;
+
+ /* By default, PIXEL_RATE is read only */
+ imx708->pixel_rate = v4l2_ctrl_new_std(ctrl_hdlr, &imx708_ctrl_ops,
+ V4L2_CID_PIXEL_RATE,
+ IMX708_INITIAL_PIXEL_RATE,
+ IMX708_INITIAL_PIXEL_RATE, 1,
+ IMX708_INITIAL_PIXEL_RATE);
+
+ /*
+ * Create the controls here, but mode specific limits are setup
+ * in the imx708_set_framing_limits() call below.
+ */
+ imx708->vblank = v4l2_ctrl_new_std(ctrl_hdlr, &imx708_ctrl_ops,
+ V4L2_CID_VBLANK, 0, 0xffff, 1, 0);
+ imx708->hblank = v4l2_ctrl_new_std(ctrl_hdlr, &imx708_ctrl_ops,
+ V4L2_CID_HBLANK, 0, 0xffff, 1, 0);
+
+ imx708->exposure = v4l2_ctrl_new_std(ctrl_hdlr, &imx708_ctrl_ops,
+ V4L2_CID_EXPOSURE,
+ IMX708_EXPOSURE_MIN,
+ IMX708_EXPOSURE_MAX,
+ IMX708_EXPOSURE_STEP,
+ IMX708_EXPOSURE_DEFAULT);
+
+ v4l2_ctrl_new_std(ctrl_hdlr, &imx708_ctrl_ops, V4L2_CID_ANALOGUE_GAIN,
+ IMX708_ANA_GAIN_MIN, IMX708_ANA_GAIN_MAX,
+ IMX708_ANA_GAIN_STEP, IMX708_ANA_GAIN_DEFAULT);
+
+ v4l2_ctrl_new_std(ctrl_hdlr, &imx708_ctrl_ops, V4L2_CID_DIGITAL_GAIN,
+ IMX708_DGTL_GAIN_MIN, IMX708_DGTL_GAIN_MAX,
+ IMX708_DGTL_GAIN_STEP, IMX708_DGTL_GAIN_DEFAULT);
+
+ imx708->hflip = v4l2_ctrl_new_std(ctrl_hdlr, &imx708_ctrl_ops,
+ V4L2_CID_HFLIP, 0, 1, 1, 0);
+
+ imx708->vflip = v4l2_ctrl_new_std(ctrl_hdlr, &imx708_ctrl_ops,
+ V4L2_CID_VFLIP, 0, 1, 1, 0);
+
+ v4l2_ctrl_new_std_menu_items(ctrl_hdlr, &imx708_ctrl_ops,
+ V4L2_CID_TEST_PATTERN,
+ ARRAY_SIZE(imx708_test_pattern_menu) - 1,
+ 0, 0, imx708_test_pattern_menu);
+ for (i = 0; i < 4; i++) {
+ /*
+ * The assumption is that
+ * V4L2_CID_TEST_PATTERN_GREENR == V4L2_CID_TEST_PATTERN_RED + 1
+ * V4L2_CID_TEST_PATTERN_BLUE == V4L2_CID_TEST_PATTERN_RED + 2
+ * V4L2_CID_TEST_PATTERN_GREENB == V4L2_CID_TEST_PATTERN_RED + 3
+ */
+ v4l2_ctrl_new_std(ctrl_hdlr, &imx708_ctrl_ops,
+ V4L2_CID_TEST_PATTERN_RED + i,
+ IMX708_TEST_PATTERN_COLOUR_MIN,
+ IMX708_TEST_PATTERN_COLOUR_MAX,
+ IMX708_TEST_PATTERN_COLOUR_STEP,
+ IMX708_TEST_PATTERN_COLOUR_MAX);
+ /* The "Solid color" pattern is white by default */
+ }
+
+ imx708->notify_gains = v4l2_ctrl_new_custom(ctrl_hdlr,
+ &imx708_notify_gains_ctrl, NULL);
+
+ imx708->hdr_mode = v4l2_ctrl_new_std(ctrl_hdlr, &imx708_ctrl_ops,
+ V4L2_CID_WIDE_DYNAMIC_RANGE,
+ 0, 1, 1, 0);
+
+ ret = v4l2_fwnode_device_parse(&client->dev, &props);
+ if (ret)
+ goto error;
+
+ v4l2_ctrl_new_fwnode_properties(ctrl_hdlr, &imx708_ctrl_ops, &props);
+
+ if (ctrl_hdlr->error) {
+ ret = ctrl_hdlr->error;
+ dev_err(&client->dev, "%s control init failed (%d)\n",
+ __func__, ret);
+ goto error;
+ }
+
+ imx708->hblank->flags |= V4L2_CTRL_FLAG_READ_ONLY;
+ imx708->hflip->flags |= V4L2_CTRL_FLAG_MODIFY_LAYOUT;
+ imx708->vflip->flags |= V4L2_CTRL_FLAG_MODIFY_LAYOUT;
+ imx708->hdr_mode->flags |= V4L2_CTRL_FLAG_MODIFY_LAYOUT;
+
+ imx708->sd.ctrl_handler = ctrl_hdlr;
+
+ /* Setup exposure and frame/line length limits. */
+ imx708_set_framing_limits(imx708);
+
+ return 0;
+
+error:
+ v4l2_ctrl_handler_free(ctrl_hdlr);
+ mutex_destroy(&imx708->mutex);
+
+ return ret;
+}
+
+static void imx708_free_controls(struct imx708 *imx708)
+{
+ v4l2_ctrl_handler_free(imx708->sd.ctrl_handler);
+ mutex_destroy(&imx708->mutex);
+}
+
+static int imx708_check_hwcfg(struct device *dev)
+{
+ struct fwnode_handle *endpoint;
+ struct v4l2_fwnode_endpoint ep_cfg = {
+ .bus_type = V4L2_MBUS_CSI2_DPHY
+ };
+ int ret = -EINVAL;
+
+ endpoint = fwnode_graph_get_next_endpoint(dev_fwnode(dev), NULL);
+ if (!endpoint) {
+ dev_err(dev, "endpoint node not found\n");
+ return -EINVAL;
+ }
+
+ if (v4l2_fwnode_endpoint_alloc_parse(endpoint, &ep_cfg)) {
+ dev_err(dev, "could not parse endpoint\n");
+ goto error_out;
+ }
+
+ /* Check the number of MIPI CSI2 data lanes */
+ if (ep_cfg.bus.mipi_csi2.num_data_lanes != 2) {
+ dev_err(dev, "only 2 data lanes are currently supported\n");
+ goto error_out;
+ }
+
+ /* Check the link frequency set in device tree */
+ if (!ep_cfg.nr_of_link_frequencies) {
+ dev_err(dev, "link-frequency property not found in DT\n");
+ goto error_out;
+ }
+
+ if (ep_cfg.nr_of_link_frequencies != 1 ||
+ ep_cfg.link_frequencies[0] != IMX708_DEFAULT_LINK_FREQ) {
+ dev_err(dev, "Link frequency not supported: %lld\n",
+ ep_cfg.link_frequencies[0]);
+ goto error_out;
+ }
+
+ ret = 0;
+
+error_out:
+ v4l2_fwnode_endpoint_free(&ep_cfg);
+ fwnode_handle_put(endpoint);
+
+ return ret;
+}
+
+static int imx708_probe(struct i2c_client *client)
+{
+ struct device *dev = &client->dev;
+ struct imx708 *imx708;
+ int ret;
+
+ imx708 = devm_kzalloc(&client->dev, sizeof(*imx708), GFP_KERNEL);
+ if (!imx708)
+ return -ENOMEM;
+
+ v4l2_i2c_subdev_init(&imx708->sd, client, &imx708_subdev_ops);
+
+ /* Check the hardware configuration in device tree */
+ if (imx708_check_hwcfg(dev))
+ return -EINVAL;
+
+ /* Get system clock (xclk) */
+ imx708->xclk = devm_clk_get(dev, NULL);
+ if (IS_ERR(imx708->xclk)) {
+ dev_err(dev, "failed to get xclk\n");
+ return PTR_ERR(imx708->xclk);
+ }
+
+ imx708->xclk_freq = clk_get_rate(imx708->xclk);
+ if (imx708->xclk_freq != IMX708_XCLK_FREQ) {
+ dev_err(dev, "xclk frequency not supported: %d Hz\n",
+ imx708->xclk_freq);
+ return -EINVAL;
+ }
+
+ ret = imx708_get_regulators(imx708);
+ if (ret) {
+ dev_err(dev, "failed to get regulators\n");
+ return ret;
+ }
+
+ /* Request optional enable pin */
+ imx708->reset_gpio = devm_gpiod_get_optional(dev, "reset",
+ GPIOD_OUT_HIGH);
+
+ /*
+ * The sensor must be powered for imx708_identify_module()
+ * to be able to read the CHIP_ID register
+ */
+ ret = imx708_power_on(dev);
+ if (ret)
+ return ret;
+
+ ret = imx708_identify_module(imx708);
+ if (ret)
+ goto error_power_off;
+
+ /* Initialize default format */
+ imx708_set_default_format(imx708);
+
+ /* Enable runtime PM and turn off the device */
+ pm_runtime_set_active(dev);
+ pm_runtime_enable(dev);
+ pm_runtime_idle(dev);
+
+ /* This needs the pm runtime to be registered. */
+ ret = imx708_init_controls(imx708);
+ if (ret)
+ goto error_power_off;
+
+ /* Initialize subdev */
+ imx708->sd.internal_ops = &imx708_internal_ops;
+ imx708->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE |
+ V4L2_SUBDEV_FL_HAS_EVENTS;
+ imx708->sd.entity.function = MEDIA_ENT_F_CAM_SENSOR;
+
+ /* Initialize source pads */
+ imx708->pad[IMAGE_PAD].flags = MEDIA_PAD_FL_SOURCE;
+ imx708->pad[METADATA_PAD].flags = MEDIA_PAD_FL_SOURCE;
+
+ ret = media_entity_pads_init(&imx708->sd.entity, NUM_PADS, imx708->pad);
+ if (ret) {
+ dev_err(dev, "failed to init entity pads: %d\n", ret);
+ goto error_handler_free;
+ }
+
+ ret = v4l2_async_register_subdev_sensor(&imx708->sd);
+ if (ret < 0) {
+ dev_err(dev, "failed to register sensor sub-device: %d\n", ret);
+ goto error_media_entity;
+ }
+
+ return 0;
+
+error_media_entity:
+ media_entity_cleanup(&imx708->sd.entity);
+
+error_handler_free:
+ imx708_free_controls(imx708);
+
+error_power_off:
+ pm_runtime_disable(&client->dev);
+ pm_runtime_set_suspended(&client->dev);
+ imx708_power_off(&client->dev);
+
+ return ret;
+}
+
+static void imx708_remove(struct i2c_client *client)
+{
+ struct v4l2_subdev *sd = i2c_get_clientdata(client);
+ struct imx708 *imx708 = to_imx708(sd);
+
+ v4l2_async_unregister_subdev(sd);
+ media_entity_cleanup(&sd->entity);
+ imx708_free_controls(imx708);
+
+ pm_runtime_disable(&client->dev);
+ if (!pm_runtime_status_suspended(&client->dev))
+ imx708_power_off(&client->dev);
+ pm_runtime_set_suspended(&client->dev);
+}
+
+static const struct of_device_id imx708_dt_ids[] = {
+ { .compatible = "sony,imx708" },
+ { /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, imx708_dt_ids);
+
+static const struct dev_pm_ops imx708_pm_ops = {
+ SET_SYSTEM_SLEEP_PM_OPS(imx708_suspend, imx708_resume)
+ SET_RUNTIME_PM_OPS(imx708_power_off, imx708_power_on, NULL)
+};
+
+static struct i2c_driver imx708_i2c_driver = {
+ .driver = {
+ .name = "imx708",
+ .of_match_table = imx708_dt_ids,
+ .pm = &imx708_pm_ops,
+ },
+ .probe = imx708_probe,
+ .remove = imx708_remove,
+};
+
+module_i2c_driver(imx708_i2c_driver);
+
+MODULE_AUTHOR("David Plowman <david.plowman@raspberrypi.com>");
+MODULE_DESCRIPTION("Sony IMX708 sensor driver");
+MODULE_LICENSE("GPL v2");
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