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openwrt/target/linux/starfive/patches-6.6/0087-media-i2c-Add-imx708-support.patch

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starfive: add patches for 6.6 Add updated patches for 6.6. DMA/cache-handling patches have been reworked / backported from upstream. Signed-off-by: Zoltan HERPAI <wigyori@uid0.hu>
2024-09-01 14:06:29 +00:00
From e89556802c5d29a80f5887995ab257d4e826a90f Mon Sep 17 00:00:00 2001
From: Changhuang Liang <changhuang.liang@starfivetech.com>
Date: Mon, 3 Apr 2023 13:52:17 +0800
Subject: [PATCH 087/116] media: i2c: Add imx708 support
Add imx708 support.
Signed-off-by: Changhuang Liang <changhuang.liang@starfivetech.com>
---
drivers/media/i2c/Kconfig | 13 +
drivers/media/i2c/Makefile | 1 +
drivers/media/i2c/imx708.c | 1921 ++++++++++++++++++++++++++++++++++++
3 files changed, 1935 insertions(+)
create mode 100644 drivers/media/i2c/imx708.c
--- a/drivers/media/i2c/Kconfig
+++ b/drivers/media/i2c/Kconfig
@@ -201,6 +201,19 @@ config VIDEO_IMX415
To compile this driver as a module, choose M here: the
module will be called imx415.
+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
@@ -53,6 +53,7 @@ obj-$(CONFIG_VIDEO_IMX335) += imx335.o
obj-$(CONFIG_VIDEO_IMX355) += imx355.o
obj-$(CONFIG_VIDEO_IMX412) += imx412.o
obj-$(CONFIG_VIDEO_IMX415) += imx415.o
+obj-$(CONFIG_VIDEO_IMX708) += imx708.o
obj-$(CONFIG_VIDEO_IR_I2C) += ir-kbd-i2c.o
obj-$(CONFIG_VIDEO_ISL7998X) += isl7998x.o
obj-$(CONFIG_VIDEO_KS0127) += ks0127.o
--- /dev/null
+++ b/drivers/media/i2c/imx708.c
@@ -0,0 +1,1921 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * A V4L2 driver for Sony IMX708 cameras.
+ * Copyright (C) 2022-2023, 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
+
+/* V_TIMING internal */
+#define IMX708_REG_FRAME_LENGTH 0x0340
+#define IMX708_FRAME_LENGTH_MAX 0xffff
+
+/* Long exposure multiplier */
+#define IMX708_LONG_EXP_SHIFT_MAX 7
+#define IMX708_LONG_EXP_SHIFT_REG 0x3100
+
+/* 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
+
+/* 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 + 768,
+ .top = IMX708_PIXEL_ARRAY_TOP + 432,
+ .width = 3072,
+ .height = 1728,
+ },
+ .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;
+
+ 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 */
+ struct mutex mutex;
+
+ /* Streaming on/off */
+ bool streaming;
+
+ /* Rewrite common registers on stream on? */
+ bool common_regs_written;
+
+ /* Current long exposure factor in use. Set through V4L2_CID_VBLANK */
+ unsigned int long_exp_shift;
+};
+
+static inline struct imx708 *to_imx708(struct v4l2_subdev *_sd)
+{
+ return container_of(_sd, struct imx708, sd);
+}
+
+static inline void get_mode_table(const struct imx708_mode **mode_list,
+ unsigned int *num_modes,
+ bool hdr_enable)
+{
+ 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);
+ }
+}
+
+/* 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, 0);
+ 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_crop */
+ try_crop = v4l2_subdev_get_try_crop(sd, fh->state, 0);
+ 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 >> imx708->long_exp_shift);
+
+ 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 int imx708_set_frame_length(struct imx708 *imx708, unsigned int val)
+{
+ int ret = 0;
+
+ imx708->long_exp_shift = 0;
+
+ while (val > IMX708_FRAME_LENGTH_MAX) {
+ imx708->long_exp_shift++;
+ val >>= 1;
+ }
+
+ ret = imx708_write_reg(imx708, IMX708_REG_FRAME_LENGTH,
+ IMX708_REG_VALUE_16BIT, val);
+ if (ret)
+ return ret;
+
+ return imx708_write_reg(imx708, IMX708_LONG_EXP_SHIFT_REG,
+ IMX708_REG_VALUE_08BIT, imx708->long_exp_shift);
+}
+
+static void imx708_set_framing_limits(struct imx708 *imx708)
+{
+ unsigned int hblank;
+ const struct imx708_mode *mode = imx708->mode;
+
+ /* Default to no long exposure multiplier */
+ imx708->long_exp_shift = 0;
+
+ __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,
+ ((1 << IMX708_LONG_EXP_SHIFT_MAX) *
+ 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 num_modes;
+ int ret;
+
+ /*
+ * 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))
+ return 0;
+
+ switch (ctrl->id) {
+ case V4L2_CID_ANALOGUE_GAIN:
+ ret = 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_set_frame_length(imx708,
+ 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:
+ get_mode_table(&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);
+ ret = 0;
+ 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_mark_last_busy(&client->dev);
+ pm_runtime_put_autosuspend(&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->index >= 1)
+ return -EINVAL;
+
+ code->code = imx708_get_format_code(imx708);
+
+ 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);
+ const struct imx708_mode *mode_list;
+ unsigned int num_modes;
+
+ get_mode_table(&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;
+
+ 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 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);
+
+ 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 = imx708_get_format_code(imx708);
+ fmt->format = *try_fmt;
+ } else {
+ imx708_update_image_pad_format(imx708, imx708->mode, fmt);
+ fmt->format.code = imx708_get_format_code(imx708);
+ }
+
+ 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);
+ const struct imx708_mode *mode_list;
+ unsigned int num_modes;
+
+ mutex_lock(&imx708->mutex);
+
+ /* Bayer order varies with flips */
+ fmt->format.code = imx708_get_format_code(imx708);
+
+ get_mode_table(&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);
+ }
+
+ 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++) {
+ u16 reg = IMX708_REG_BASE_SPC_GAINS_L + i;
+
+ ret = imx708_write_reg(imx708, reg,
+ IMX708_REG_VALUE_08BIT,
+ pdaf_gains[0][i % 9]);
+ }
+ for (i = 0; i < 54 && ret == 0; i++) {
+ u16 reg = IMX708_REG_BASE_SPC_GAINS_R + i;
+
+ ret = imx708_write_reg(imx708, reg,
+ 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_resume_and_get(&client->dev);
+ if (ret < 0)
+ 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_mark_last_busy(&client->dev);
+ pm_runtime_put_autosuspend(&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_sync(&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);
+ clk_disable_unprepare(imx708->xclk);
+ regulator_bulk_disable(IMX708_NUM_SUPPLIES, imx708->supplies);
+
+ /* 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;
+ }
+
+ 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->mode->pixel_rate,
+ imx708->mode->pixel_rate, 1,
+ imx708->mode->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 with autosuspend. As the device has been powered
+ * manually, mark it as active, and increase the usage count without
+ * resuming the device.
+ */
+ pm_runtime_set_active(dev);
+ pm_runtime_get_noresume(dev);
+ pm_runtime_enable(dev);
+ pm_runtime_set_autosuspend_delay(dev, 1000);
+ pm_runtime_use_autosuspend(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 pad */
+ imx708->pad.flags = MEDIA_PAD_FL_SOURCE;
+
+ ret = media_entity_pads_init(&imx708->sd.entity, 1, &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;
+ }
+
+ /*
+ * Decrease the PM usage count. The device will get suspended after the
+ * autosuspend delay, turning the power off.
+ */
+ pm_runtime_mark_last_busy(dev);
+ pm_runtime_put_autosuspend(dev);
+
+ 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_put_noidle(&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");
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