[PATCH 2/2] media: i2c: Add driver for ST VD56G3 camera sensor
From: Sylvain Petinot
Date: Wed Apr 17 2024 - 09:36:29 EST
Add V4L2 sub-device driver for STMicroelectronics VD56G3 camera sensor.
This is a 1.5 M pixel global shutter image sensor with an active array
size of 1124 x 1364 (portrait orientation).
The driver supports Mono (VD56G3) and Color (VD66GY) variants.
Signed-off-by: Sylvain Petinot <sylvain.petinot@xxxxxxxxxxx>
---
drivers/media/i2c/Kconfig | 11 +
drivers/media/i2c/Makefile | 1 +
drivers/media/i2c/st-vd56g3.c | 1619 +++++++++++++++++++++++++++++++++
3 files changed, 1631 insertions(+)
create mode 100644 drivers/media/i2c/st-vd56g3.c
diff --git a/drivers/media/i2c/Kconfig b/drivers/media/i2c/Kconfig
index 56f276b920ab..a2d7271eef88 100644
--- a/drivers/media/i2c/Kconfig
+++ b/drivers/media/i2c/Kconfig
@@ -657,6 +657,17 @@ config VIDEO_S5K6A3
This is a V4L2 sensor driver for Samsung S5K6A3 raw
camera sensor.
+config VIDEO_ST_VD56G3
+ tristate "ST VD56G3 sensor support"
+ select V4L2_CCI_I2C
+ depends on OF && GPIOLIB
+ help
+ This is a Video4Linux2 sensor driver for the ST VD56G3
+ camera sensor.
+
+ To compile this driver as a module, choose M here: the
+ module will be called st-vd56g3.
+
config VIDEO_ST_VGXY61
tristate "ST VGXY61 sensor support"
select V4L2_CCI_I2C
diff --git a/drivers/media/i2c/Makefile b/drivers/media/i2c/Makefile
index dfbe6448b549..b469cf0f8113 100644
--- a/drivers/media/i2c/Makefile
+++ b/drivers/media/i2c/Makefile
@@ -124,6 +124,7 @@ obj-$(CONFIG_VIDEO_SAA717X) += saa717x.o
obj-$(CONFIG_VIDEO_SAA7185) += saa7185.o
obj-$(CONFIG_VIDEO_SONY_BTF_MPX) += sony-btf-mpx.o
obj-$(CONFIG_VIDEO_ST_MIPID02) += st-mipid02.o
+obj-$(CONFIG_VIDEO_ST_VD56G3) += st-vd56g3.o
obj-$(CONFIG_VIDEO_ST_VGXY61) += st-vgxy61.o
obj-$(CONFIG_VIDEO_TC358743) += tc358743.o
obj-$(CONFIG_VIDEO_TC358746) += tc358746.o
diff --git a/drivers/media/i2c/st-vd56g3.c b/drivers/media/i2c/st-vd56g3.c
new file mode 100644
index 000000000000..eff819941456
--- /dev/null
+++ b/drivers/media/i2c/st-vd56g3.c
@@ -0,0 +1,1619 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * A V4L2 driver for ST VD56G3 (Mono) and VD66GY (RGB) global shutter cameras.
+ * Copyright (C) 2024, STMicroelectronics SA
+ */
+
+#include <linux/clk.h>
+#include <linux/delay.h>
+#include <linux/gpio/consumer.h>
+#include <linux/i2c.h>
+#include <linux/iopoll.h>
+#include <linux/module.h>
+#include <linux/pm_runtime.h>
+#include <linux/regmap.h>
+#include <linux/regulator/consumer.h>
+#include <linux/units.h>
+
+#include <asm/unaligned.h>
+
+#include <media/mipi-csi2.h>
+#include <media/v4l2-async.h>
+#include <media/v4l2-cci.h>
+#include <media/v4l2-ctrls.h>
+#include <media/v4l2-device.h>
+#include <media/v4l2-event.h>
+#include <media/v4l2-fwnode.h>
+#include <media/v4l2-subdev.h>
+
+/* Register Map */
+#define VD56G3_REG_MODEL_ID CCI_REG16_LE(0x0000)
+#define VD56G3_MODEL_ID 0x5603
+#define VD56G3_REG_REVISION CCI_REG16_LE(0x0002)
+#define VD56G3_REG_OPTICAL_REVISION CCI_REG8(0x001a)
+#define VD56G3_OPTICAL_REVISION_MONO 0
+#define VD56G3_OPTICAL_REVISION_BAYER 1
+#define VD56G3_REG_SYSTEM_FSM CCI_REG8(0x0028)
+#define VD56G3_SYSTEM_FSM_READY_TO_BOOT 0x01
+#define VD56G3_SYSTEM_FSM_SW_STBY 0x02
+#define VD56G3_SYSTEM_FSM_STREAMING 0x03
+#define VD56G3_REG_APPLIED_COARSE_EXPOSURE CCI_REG16_LE(0x0064)
+#define VD56G3_REG_APPLIED_ANALOG_GAIN CCI_REG8(0x0068)
+#define VD56G3_REG_APPLIED_DIGITAL_GAIN CCI_REG16_LE(0x006a)
+#define VD56G3_REG_BOOT CCI_REG8(0x0200)
+#define VD56G3_CMD_ACK 0
+#define VD56G3_CMD_BOOT 1
+#define VD56G3_REG_STBY CCI_REG8(0x0201)
+#define VD56G3_CMD_START_STREAM 1
+#define VD56G3_REG_STREAMING CCI_REG8(0x0202)
+#define VD56G3_CMD_STOP_STREAM 1
+#define VD56G3_REG_EXT_CLOCK CCI_REG32_LE(0x0220)
+#define VD56G3_REG_CLK_PLL_PREDIV CCI_REG8(0x0224)
+#define VD56G3_REG_CLK_SYS_PLL_MULT CCI_REG8(0x0226)
+#define VD56G3_REG_ORIENTATION CCI_REG8(0x0302)
+#define VD56G3_REG_FORMAT_CTRL CCI_REG8(0x030a)
+#define VD56G3_REG_OIF_CTRL CCI_REG16_LE(0x030c)
+#define VD56G3_REG_OIF_IMG_CTRL CCI_REG8(0x030f)
+#define VD56G3_REG_OIF_CSI_BITRATE CCI_REG16_LE(0x0312)
+#define VD56G3_REG_DUSTER_CTRL CCI_REG8(0x0318)
+#define VD56G3_DUSTER_DISABLE 0
+#define VD56G3_DUSTER_ENABLE_DEF_MODULES 0x13
+#define VD56G3_REG_ISL_ENABLE CCI_REG8(0x0333)
+#define VD56G3_REG_DARKCAL_CTRL CCI_REG8(0x0340)
+#define VD56G3_DARKCAL_ENABLE 1
+#define VD56G3_DARKCAL_DISABLE_DARKAVG 2
+#define VD56G3_REG_PATGEN_CTRL CCI_REG16_LE(0x0400)
+#define VD56G3_PATGEN_ENABLE 1
+#define VD56G3_PATGEN_TYPE_SHIFT 4
+#define VD56G3_REG_AE_COLDSTART_COARSE_EXPOSURE CCI_REG16_LE(0x042a)
+#define VD56G3_REG_AE_COLDSTART_ANALOG_GAIN CCI_REG8(0x042c)
+#define VD56G3_REG_AE_COLDSTART_DIGITAL_GAIN CCI_REG16_LE(0x042e)
+#define VD56G3_REG_AE_ROI_START_H CCI_REG16_LE(0x0432)
+#define VD56G3_REG_AE_ROI_START_V CCI_REG16_LE(0x0434)
+#define VD56G3_REG_AE_ROI_END_H CCI_REG16_LE(0x0436)
+#define VD56G3_REG_AE_ROI_END_V CCI_REG16_LE(0x0438)
+#define VD56G3_REG_AE_COMPENSATION CCI_REG16_LE(0x043a)
+#define VD56G3_REG_EXP_MODE CCI_REG8(0x044c)
+#define VD56G3_EXP_MODE_AUTO 0
+#define VD56G3_EXP_MODE_FREEZE 1
+#define VD56G3_EXP_MODE_MANUAL 2
+#define VD56G3_REG_MANUAL_ANALOG_GAIN CCI_REG8(0x044d)
+#define VD56G3_REG_MANUAL_COARSE_EXPOSURE CCI_REG16_LE(0x044e)
+#define VD56G3_REG_MANUAL_DIGITAL_GAIN_CH0 CCI_REG16_LE(0x0450)
+#define VD56G3_REG_MANUAL_DIGITAL_GAIN_CH1 CCI_REG16_LE(0x0452)
+#define VD56G3_REG_MANUAL_DIGITAL_GAIN_CH2 CCI_REG16_LE(0x0454)
+#define VD56G3_REG_MANUAL_DIGITAL_GAIN_CH3 CCI_REG16_LE(0x0456)
+#define VD56G3_REG_FRAME_LENGTH CCI_REG16_LE(0x0458)
+#define VD56G3_REG_Y_START CCI_REG16_LE(0x045a)
+#define VD56G3_REG_Y_END CCI_REG16_LE(0x045c)
+#define VD56G3_REG_OUT_ROI_X_START CCI_REG16_LE(0x045e)
+#define VD56G3_REG_OUT_ROI_X_END CCI_REG16_LE(0x0460)
+#define VD56G3_REG_OUT_ROI_Y_START CCI_REG16_LE(0x0462)
+#define VD56G3_REG_OUT_ROI_Y_END CCI_REG16_LE(0x0464)
+#define VD56G3_REG_GPIO_0_CTRL CCI_REG8(0x0467)
+#define VD56G3_GPIOX_GPIO_IN 0x01
+#define VD56G3_GPIOX_STROBE_MODE 0x02
+#define VD56G3_REG_READOUT_CTRL CCI_REG8(0x047e)
+#define READOUT_NORMAL 0x00
+#define READOUT_DIGITAL_BINNING_X2 0x01
+
+/*
+ * The VD56G3 pixel array is organized as follows:
+ *
+ * +--------------------------------+
+ * | | \
+ * | +------------------------+ | |
+ * | | | | |
+ * | | | | |
+ * | | | | |
+ * | | | | |
+ * | | | | |
+ * | | Default resolution | | | Native height (1364)
+ * | | 1120 x 1360 | | |
+ * | | | | |
+ * | | | | |
+ * | | | | |
+ * | | | | |
+ * | +------------------------+ | |
+ * | | /
+ * +--------------------------------+
+ * <----------------------------->
+ * \------------------- Native width (1124)
+ *
+ * The native resolution is 1124x1364.
+ * The recommended/default resolution is 1120x1360 (multiple of 16).
+ */
+#define VD56G3_NATIVE_WIDTH 1124
+#define VD56G3_NATIVE_HEIGHT 1364
+#define VD56G3_DEFAULT_WIDTH 1120
+#define VD56G3_DEFAULT_HEIGHT 1360
+#define VD56G3_DEFAULT_MODE 1
+
+/* PLL settings */
+#define VD56G3_TARGET_PLL 804000000UL
+#define VD56G3_VT_CLOCK_DIV 5
+
+/* Line length and Frame length (settings are for standard 10bits ADC mode) */
+#define VD56G3_LINE_LENGTH_MIN 1236
+#define VD56G3_VBLANK_MIN 110
+#define VD56G3_FRAME_LENGTH_DEF_60FPS 2168
+
+/* Exposure settings */
+#define VD56G3_EXPOSURE_MARGIN 75
+#define VD56G3_EXPOSURE_DEFAULT 1420
+
+/* Output Interface settings */
+#define VD56G3_MAX_CSI_DATA_LANES 2
+#define VD56G3_LINK_FREQ_DEF_1LANE 750000000UL
+#define VD56G3_LINK_FREQ_DEF_2LANES 402000000UL
+
+/* GPIOs */
+#define VD56G3_NB_GPIOS 8
+
+/* regulator supplies */
+static const char *const vd56g3_supply_names[] = {
+ "VCORE",
+ "VDDIO",
+ "VANA",
+};
+
+#define VD56G3_NUM_SUPPLIES ARRAY_SIZE(vd56g3_supply_names)
+
+/* -----------------------------------------------------------------------------
+ * Models (VD56G3: Mono, VD66GY: Bayer RGB), Modes and formats
+ */
+
+enum vd56g3_models {
+ VD56G3_MODEL_VD56G3,
+ VD56G3_MODEL_VD66GY,
+};
+
+struct vd56g3_mode {
+ u32 width;
+ u32 height;
+};
+
+static const struct vd56g3_mode vd56g3_supported_modes[] = {
+ {
+ .width = VD56G3_NATIVE_WIDTH,
+ .height = VD56G3_NATIVE_HEIGHT,
+ },
+ {
+ .width = VD56G3_DEFAULT_WIDTH,
+ .height = VD56G3_DEFAULT_HEIGHT,
+ },
+ {
+ .width = 1024,
+ .height = 1280,
+ },
+ {
+ .width = 1024,
+ .height = 768,
+ },
+ {
+ .width = 768,
+ .height = 1024,
+ },
+ {
+ .width = 720,
+ .height = 1280,
+ },
+ {
+ .width = 640,
+ .height = 480,
+ },
+ {
+ .width = 480,
+ .height = 640,
+ },
+ {
+ .width = 320,
+ .height = 240,
+ },
+};
+
+/*
+ * Sensor support 8bits and 10bits output in both variants
+ * - Monochrome
+ * - RGB (with all H/V flip variations)
+ */
+static const unsigned int vd56g3_mbus_codes[2][5] = {
+ {
+ MEDIA_BUS_FMT_Y8_1X8,
+ MEDIA_BUS_FMT_SGRBG8_1X8,
+ MEDIA_BUS_FMT_SRGGB8_1X8,
+ MEDIA_BUS_FMT_SBGGR8_1X8,
+ MEDIA_BUS_FMT_SGBRG8_1X8,
+ },
+ {
+ MEDIA_BUS_FMT_Y10_1X10,
+ MEDIA_BUS_FMT_SGRBG10_1X10,
+ MEDIA_BUS_FMT_SRGGB10_1X10,
+ MEDIA_BUS_FMT_SBGGR10_1X10,
+ MEDIA_BUS_FMT_SGBRG10_1X10,
+ },
+};
+
+enum vd56g3_expo_state {
+ VD56G3_EXPO_AUTO,
+ VD56G3_EXPO_AUTO_FREEZE,
+ VD56G3_EXPO_MANUAL
+};
+
+struct vd56g3 {
+ struct i2c_client *i2c_client;
+ struct v4l2_subdev sd;
+ struct media_pad pad;
+ struct regulator_bulk_data supplies[VD56G3_NUM_SUPPLIES];
+ struct gpio_desc *reset_gpio;
+ struct clk *xclk;
+ struct regmap *regmap;
+ u32 ext_clock;
+ u32 pll_prediv;
+ u32 pll_mult;
+ u32 pixel_clock;
+ u16 oif_ctrl;
+ int nb_of_lane;
+ u32 gpios[VD56G3_NB_GPIOS];
+ unsigned long ext_leds_mask;
+ bool is_mono;
+ struct v4l2_ctrl_handler ctrl_handler;
+ struct v4l2_ctrl *hblank_ctrl;
+ struct v4l2_ctrl *vblank_ctrl;
+ struct {
+ struct v4l2_ctrl *hflip_ctrl;
+ struct v4l2_ctrl *vflip_ctrl;
+ };
+ struct v4l2_ctrl *patgen_ctrl;
+ struct {
+ struct v4l2_ctrl *ae_ctrl;
+ struct v4l2_ctrl *expo_ctrl;
+ struct v4l2_ctrl *again_ctrl;
+ struct v4l2_ctrl *dgain_ctrl;
+ };
+ struct v4l2_ctrl *ae_lock_ctrl;
+ struct v4l2_ctrl *ae_bias_ctrl;
+ struct v4l2_ctrl *led_ctrl;
+ bool streaming;
+};
+
+static inline struct vd56g3 *to_vd56g3(struct v4l2_subdev *sd)
+{
+ return container_of(sd, struct vd56g3, sd);
+}
+
+static inline struct v4l2_subdev *ctrl_to_sd(struct v4l2_ctrl *ctrl)
+{
+ return &container_of(ctrl->handler, struct vd56g3, ctrl_handler)->sd;
+}
+
+/* -----------------------------------------------------------------------------
+ * Additional i2c register helpers
+ */
+
+static int vd56g3_poll_reg(struct vd56g3 *sensor, u32 reg, u8 poll_val,
+ int *err)
+{
+ unsigned int val = 0;
+ int ret;
+
+ if (err && *err)
+ return *err;
+
+ reg = reg & CCI_REG_ADDR_MASK;
+ ret = regmap_read_poll_timeout(sensor->regmap, reg, val,
+ (val == poll_val), 2000,
+ 500 * USEC_PER_MSEC);
+
+ if (ret && err)
+ *err = ret;
+
+ return ret;
+}
+
+static int vd56g3_wait_state(struct vd56g3 *sensor, int state, int *err)
+{
+ return vd56g3_poll_reg(sensor, VD56G3_REG_SYSTEM_FSM, state, err);
+}
+
+/* -----------------------------------------------------------------------------
+ * Controls: definitions, helpers and handlers
+ */
+
+static const char *const vd56g3_tp_menu[] = { "Disabled", "Solid", "Colorbar",
+ "Gradbar", "Hgrey", "Vgrey",
+ "Dgrey", "PN28" };
+
+static const s64 vd56g3_ev_bias_qmenu[] = { -4000, -3500, -3000, -2500, -2000,
+ -1500, -1000, -500, 0, 500,
+ 1000, 1500, 2000, 2500, 3000,
+ 3500, 4000 };
+
+static const s64 vd56g3_link_freq_1lane[] = { VD56G3_LINK_FREQ_DEF_1LANE };
+
+static const s64 vd56g3_link_freq_2lanes[] = { VD56G3_LINK_FREQ_DEF_2LANES };
+
+static u8 vd56g3_get_bpp(__u32 code)
+{
+ switch (code) {
+ case MEDIA_BUS_FMT_Y8_1X8:
+ case MEDIA_BUS_FMT_SGRBG8_1X8:
+ case MEDIA_BUS_FMT_SRGGB8_1X8:
+ case MEDIA_BUS_FMT_SBGGR8_1X8:
+ case MEDIA_BUS_FMT_SGBRG8_1X8:
+ return 8;
+ case MEDIA_BUS_FMT_Y10_1X10:
+ case MEDIA_BUS_FMT_SGRBG10_1X10:
+ case MEDIA_BUS_FMT_SRGGB10_1X10:
+ case MEDIA_BUS_FMT_SBGGR10_1X10:
+ case MEDIA_BUS_FMT_SGBRG10_1X10:
+ return 10;
+ default:
+ /* Should never happen */
+ WARN(1, "Unsupported code %d. default to 8 bpp", code);
+ }
+
+ return 8;
+}
+
+static u8 vd56g3_get_datatype(__u32 code)
+{
+ switch (code) {
+ case MEDIA_BUS_FMT_Y8_1X8:
+ case MEDIA_BUS_FMT_SGRBG8_1X8:
+ case MEDIA_BUS_FMT_SRGGB8_1X8:
+ case MEDIA_BUS_FMT_SBGGR8_1X8:
+ case MEDIA_BUS_FMT_SGBRG8_1X8:
+ return MIPI_CSI2_DT_RAW8;
+ case MEDIA_BUS_FMT_Y10_1X10:
+ case MEDIA_BUS_FMT_SGRBG10_1X10:
+ case MEDIA_BUS_FMT_SRGGB10_1X10:
+ case MEDIA_BUS_FMT_SBGGR10_1X10:
+ case MEDIA_BUS_FMT_SGBRG10_1X10:
+ return MIPI_CSI2_DT_RAW10;
+ default:
+ /* Should never happen */
+ WARN(1, "Unsupported code %d. default to MIPI_CSI2_DT_RAW8",
+ code);
+ }
+
+ return MIPI_CSI2_DT_RAW8;
+}
+
+static int vd56g3_read_expo_cluster(struct vd56g3 *sensor, bool force_cur_val)
+{
+ u64 exposure = 0;
+ u64 again = 0;
+ u64 dgain = 0;
+ int ret = 0;
+
+ /*
+ * When 'force_cur_val' is enabled, save the ctrl value in 'cur.val'
+ * instead of the normal 'val', this is used during poweroff to cache
+ * volatile ctrls and enable coldstart.
+ */
+ cci_read(sensor->regmap, VD56G3_REG_APPLIED_COARSE_EXPOSURE, &exposure,
+ &ret);
+ cci_read(sensor->regmap, VD56G3_REG_APPLIED_ANALOG_GAIN, &again, &ret);
+ cci_read(sensor->regmap, VD56G3_REG_APPLIED_DIGITAL_GAIN, &dgain, &ret);
+ if (ret)
+ return ret;
+
+ if (force_cur_val) {
+ sensor->expo_ctrl->cur.val = exposure;
+ sensor->again_ctrl->cur.val = again;
+ sensor->dgain_ctrl->cur.val = dgain;
+ } else {
+ sensor->expo_ctrl->val = exposure;
+ sensor->again_ctrl->val = again;
+ sensor->dgain_ctrl->val = dgain;
+ }
+
+ return ret;
+}
+
+static int vd56g3_update_patgen(struct vd56g3 *sensor, u32 patgen_index)
+{
+ u32 pattern = patgen_index <= 3 ? patgen_index : patgen_index + 12;
+ u16 patgen = pattern << VD56G3_PATGEN_TYPE_SHIFT;
+ u8 duster = VD56G3_DUSTER_ENABLE_DEF_MODULES;
+ u8 darkcal = VD56G3_DARKCAL_ENABLE;
+ int ret = 0;
+
+ if (patgen_index) {
+ patgen |= VD56G3_PATGEN_ENABLE;
+ duster = VD56G3_DUSTER_DISABLE;
+ darkcal = VD56G3_DARKCAL_DISABLE_DARKAVG;
+ }
+
+ cci_write(sensor->regmap, VD56G3_REG_DUSTER_CTRL, duster, &ret);
+ cci_write(sensor->regmap, VD56G3_REG_DARKCAL_CTRL, darkcal, &ret);
+ cci_write(sensor->regmap, VD56G3_REG_PATGEN_CTRL, patgen, &ret);
+
+ return ret;
+}
+
+static int vd56g3_update_expo_cluster(struct vd56g3 *sensor, bool is_auto)
+{
+ int ret = 0;
+ enum vd56g3_expo_state expo_state = is_auto ? VD56G3_EXP_MODE_AUTO :
+ VD56G3_EXP_MODE_MANUAL;
+
+ if (sensor->ae_ctrl->is_new)
+ cci_write(sensor->regmap, VD56G3_REG_EXP_MODE, expo_state,
+ &ret);
+
+ /* In Auto expo, set coldstart parameters */
+ if (is_auto && sensor->ae_ctrl->is_new) {
+ cci_write(sensor->regmap,
+ VD56G3_REG_AE_COLDSTART_COARSE_EXPOSURE,
+ sensor->expo_ctrl->val, &ret);
+ cci_write(sensor->regmap, VD56G3_REG_AE_COLDSTART_ANALOG_GAIN,
+ sensor->again_ctrl->val, &ret);
+ cci_write(sensor->regmap, VD56G3_REG_AE_COLDSTART_DIGITAL_GAIN,
+ sensor->dgain_ctrl->val, &ret);
+ }
+
+ /* In Manual expo, set exposure, analog and digital gains */
+ if (!is_auto && sensor->expo_ctrl->is_new)
+ cci_write(sensor->regmap, VD56G3_REG_MANUAL_COARSE_EXPOSURE,
+ sensor->expo_ctrl->val, &ret);
+
+ if (!is_auto && sensor->again_ctrl->is_new)
+ cci_write(sensor->regmap, VD56G3_REG_MANUAL_ANALOG_GAIN,
+ sensor->again_ctrl->val, &ret);
+
+ if (!is_auto && sensor->dgain_ctrl->is_new) {
+ cci_write(sensor->regmap, VD56G3_REG_MANUAL_DIGITAL_GAIN_CH0,
+ sensor->dgain_ctrl->val, &ret);
+ cci_write(sensor->regmap, VD56G3_REG_MANUAL_DIGITAL_GAIN_CH1,
+ sensor->dgain_ctrl->val, &ret);
+ cci_write(sensor->regmap, VD56G3_REG_MANUAL_DIGITAL_GAIN_CH2,
+ sensor->dgain_ctrl->val, &ret);
+ cci_write(sensor->regmap, VD56G3_REG_MANUAL_DIGITAL_GAIN_CH3,
+ sensor->dgain_ctrl->val, &ret);
+ }
+
+ return ret;
+}
+
+static int vd56g3_lock_exposure(struct vd56g3 *sensor, u32 lock_val)
+{
+ bool ae_lock = lock_val & V4L2_LOCK_EXPOSURE;
+ enum vd56g3_expo_state expo_state = ae_lock ? VD56G3_EXP_MODE_FREEZE :
+ VD56G3_EXP_MODE_AUTO;
+ int ret = 0;
+
+ if (sensor->ae_ctrl->val == V4L2_EXPOSURE_AUTO)
+ cci_write(sensor->regmap, VD56G3_REG_EXP_MODE, expo_state,
+ &ret);
+
+ return ret;
+}
+
+static int vd56g3_write_gpiox(struct vd56g3 *sensor, unsigned long gpio_mask)
+{
+ unsigned long io;
+ u32 gpio_val;
+ int ret = 0;
+
+ for_each_set_bit(io, &gpio_mask, VD56G3_NB_GPIOS) {
+ gpio_val = sensor->gpios[io];
+
+ if (gpio_val == VD56G3_GPIOX_STROBE_MODE &&
+ sensor->led_ctrl->val == V4L2_FLASH_LED_MODE_NONE)
+ gpio_val = VD56G3_GPIOX_GPIO_IN;
+
+ cci_write(sensor->regmap, VD56G3_REG_GPIO_0_CTRL + io, gpio_val,
+ &ret);
+ }
+
+ return ret;
+}
+
+static int vd56g3_g_volatile_ctrl(struct v4l2_ctrl *ctrl)
+{
+ struct v4l2_subdev *sd = ctrl_to_sd(ctrl);
+ struct vd56g3 *sensor = to_vd56g3(sd);
+ struct i2c_client *client = v4l2_get_subdevdata(sd);
+ int ret = 0;
+
+ /* Interact with HW only when it is powered ON */
+ if (!pm_runtime_get_if_in_use(&client->dev))
+ return 0;
+
+ switch (ctrl->id) {
+ case V4L2_CID_EXPOSURE_AUTO:
+ ret = vd56g3_read_expo_cluster(sensor, false);
+ break;
+ default:
+ ret = -EINVAL;
+ break;
+ }
+
+ pm_runtime_mark_last_busy(&client->dev);
+ pm_runtime_put_autosuspend(&client->dev);
+
+ return ret;
+}
+
+static int vd56g3_s_ctrl(struct v4l2_ctrl *ctrl)
+{
+ struct v4l2_subdev *sd = ctrl_to_sd(ctrl);
+ struct vd56g3 *sensor = to_vd56g3(sd);
+ struct i2c_client *client = v4l2_get_subdevdata(sd);
+ const struct v4l2_rect *crop;
+ unsigned int frame_length = 0;
+ unsigned int expo_max;
+ unsigned int ae_compensation;
+ bool is_auto = false;
+ int ret;
+
+ struct v4l2_subdev_state *state =
+ v4l2_subdev_get_locked_active_state(sd);
+ crop = v4l2_subdev_state_get_crop(state, 0);
+
+ if (ctrl->flags & V4L2_CTRL_FLAG_READ_ONLY)
+ return 0;
+
+ /* Update controls state, range, etc. whatever the state of the HW */
+ switch (ctrl->id) {
+ case V4L2_CID_VBLANK:
+ frame_length = crop->height + ctrl->val;
+ expo_max = frame_length - VD56G3_EXPOSURE_MARGIN;
+ __v4l2_ctrl_modify_range(sensor->expo_ctrl, 0, expo_max, 1,
+ VD56G3_EXPOSURE_DEFAULT);
+ break;
+ case V4L2_CID_EXPOSURE_AUTO:
+ is_auto = (ctrl->val == V4L2_EXPOSURE_AUTO);
+ __v4l2_ctrl_grab(sensor->ae_lock_ctrl, !is_auto);
+ __v4l2_ctrl_grab(sensor->ae_bias_ctrl, !is_auto);
+ break;
+ default:
+ break;
+ }
+
+ /* Interact with HW only when it is powered ON */
+ if (!pm_runtime_get_if_in_use(&client->dev))
+ return 0;
+
+ switch (ctrl->id) {
+ case V4L2_CID_HFLIP:
+ ret = cci_write(sensor->regmap, VD56G3_REG_ORIENTATION,
+ sensor->hflip_ctrl->val |
+ (sensor->vflip_ctrl->val << 1),
+ NULL);
+ break;
+ case V4L2_CID_TEST_PATTERN:
+ ret = vd56g3_update_patgen(sensor, ctrl->val);
+ break;
+ case V4L2_CID_EXPOSURE_AUTO:
+ ret = vd56g3_update_expo_cluster(sensor, is_auto);
+ break;
+ case V4L2_CID_3A_LOCK:
+ ret = vd56g3_lock_exposure(sensor, ctrl->val);
+ break;
+ case V4L2_CID_AUTO_EXPOSURE_BIAS:
+ ae_compensation =
+ DIV_ROUND_CLOSEST((int)vd56g3_ev_bias_qmenu[ctrl->val] *
+ 256, 1000);
+ ret = cci_write(sensor->regmap, VD56G3_REG_AE_COMPENSATION,
+ ae_compensation, NULL);
+ break;
+ case V4L2_CID_VBLANK:
+ ret = cci_write(sensor->regmap, VD56G3_REG_FRAME_LENGTH,
+ frame_length, NULL);
+ break;
+ case V4L2_CID_FLASH_LED_MODE:
+ ret = vd56g3_write_gpiox(sensor, sensor->ext_leds_mask);
+ break;
+ default:
+ ret = -EINVAL;
+ break;
+ }
+
+ pm_runtime_mark_last_busy(&client->dev);
+ pm_runtime_put_autosuspend(&client->dev);
+
+ return ret;
+}
+
+static const struct v4l2_ctrl_ops vd56g3_ctrl_ops = {
+ .g_volatile_ctrl = vd56g3_g_volatile_ctrl,
+ .s_ctrl = vd56g3_s_ctrl,
+};
+
+static void vd56g3_update_controls(struct vd56g3 *sensor)
+{
+ const struct v4l2_rect *crop;
+ unsigned int hblank;
+ unsigned int vblank_min, vblank, vblank_max;
+ unsigned int frame_length;
+ unsigned int expo_max;
+
+ struct v4l2_subdev_state *state =
+ v4l2_subdev_get_locked_active_state(&sensor->sd);
+ crop = v4l2_subdev_state_get_crop(state, 0);
+
+ hblank = VD56G3_LINE_LENGTH_MIN - crop->width;
+ vblank_min = VD56G3_VBLANK_MIN;
+ vblank = VD56G3_FRAME_LENGTH_DEF_60FPS - crop->height;
+ vblank_max = 0xffff - crop->height;
+ frame_length = crop->height + vblank;
+ expo_max = frame_length - VD56G3_EXPOSURE_MARGIN;
+
+ /* Update blanking and exposure (ranges + values) */
+ __v4l2_ctrl_modify_range(sensor->hblank_ctrl, hblank, hblank, 1,
+ hblank);
+ __v4l2_ctrl_modify_range(sensor->vblank_ctrl, vblank_min, vblank_max, 1,
+ vblank);
+ __v4l2_ctrl_s_ctrl(sensor->vblank_ctrl, vblank);
+ __v4l2_ctrl_modify_range(sensor->expo_ctrl, 0, expo_max, 1,
+ VD56G3_EXPOSURE_DEFAULT);
+ __v4l2_ctrl_s_ctrl(sensor->expo_ctrl, VD56G3_EXPOSURE_DEFAULT);
+}
+
+static int vd56g3_init_controls(struct vd56g3 *sensor)
+{
+ const struct v4l2_ctrl_ops *ops = &vd56g3_ctrl_ops;
+ struct v4l2_ctrl_handler *hdl = &sensor->ctrl_handler;
+ struct v4l2_ctrl *ctrl;
+ int ret;
+
+ v4l2_ctrl_handler_init(hdl, 25);
+
+ /* Horizontal & vertical flips modify bayer code on RGB variant */
+ sensor->hflip_ctrl =
+ v4l2_ctrl_new_std(hdl, ops, V4L2_CID_HFLIP, 0, 1, 1, 0);
+ if (sensor->hflip_ctrl)
+ sensor->hflip_ctrl->flags |= V4L2_CTRL_FLAG_MODIFY_LAYOUT;
+
+ sensor->vflip_ctrl =
+ v4l2_ctrl_new_std(hdl, ops, V4L2_CID_VFLIP, 0, 1, 1, 0);
+ if (sensor->vflip_ctrl)
+ sensor->vflip_ctrl->flags |= V4L2_CTRL_FLAG_MODIFY_LAYOUT;
+
+ sensor->patgen_ctrl =
+ v4l2_ctrl_new_std_menu_items(hdl, ops, V4L2_CID_TEST_PATTERN,
+ ARRAY_SIZE(vd56g3_tp_menu) - 1, 0,
+ 0, vd56g3_tp_menu);
+
+ ctrl = v4l2_ctrl_new_int_menu(hdl, ops, V4L2_CID_LINK_FREQ,
+ ARRAY_SIZE(vd56g3_link_freq_1lane) - 1, 0,
+ (sensor->nb_of_lane == 2) ?
+ vd56g3_link_freq_2lanes :
+ vd56g3_link_freq_1lane);
+ if (ctrl)
+ ctrl->flags |= V4L2_CTRL_FLAG_READ_ONLY;
+
+ ctrl = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_PIXEL_RATE,
+ sensor->pixel_clock, sensor->pixel_clock, 1,
+ sensor->pixel_clock);
+ if (ctrl)
+ ctrl->flags |= V4L2_CTRL_FLAG_READ_ONLY;
+
+ sensor->ae_ctrl = v4l2_ctrl_new_std_menu(hdl, ops,
+ V4L2_CID_EXPOSURE_AUTO,
+ V4L2_EXPOSURE_MANUAL, 0,
+ V4L2_EXPOSURE_AUTO);
+
+ sensor->ae_lock_ctrl = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_3A_LOCK, 0,
+ GENMASK(2, 0), 0, 0);
+
+ sensor->ae_bias_ctrl =
+ v4l2_ctrl_new_int_menu(hdl, ops, V4L2_CID_AUTO_EXPOSURE_BIAS,
+ ARRAY_SIZE(vd56g3_ev_bias_qmenu) - 1,
+ ARRAY_SIZE(vd56g3_ev_bias_qmenu) / 2,
+ vd56g3_ev_bias_qmenu);
+
+ /*
+ * Analog gain [1, 8] is computed with the following logic :
+ * 32/(32 - again_reg), with again_reg in the range [0:28]
+ * Digital gain [1.00, 8.00] is coded as a Fixed Point 5.8
+ */
+ sensor->again_ctrl = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_ANALOGUE_GAIN,
+ 0, 28, 1, 0);
+ sensor->dgain_ctrl = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_DIGITAL_GAIN,
+ 0x100, 0x800, 1, 0x100);
+
+ /*
+ * Set the exposure, horizontal and vertical blanking ctrls
+ * to hardcoded values, they will be updated in vd56g3_update_controls.
+ * Exposure being in an auto-cluster, set a significant value here.
+ */
+ sensor->expo_ctrl = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_EXPOSURE,
+ VD56G3_EXPOSURE_DEFAULT,
+ VD56G3_EXPOSURE_DEFAULT, 1,
+ VD56G3_EXPOSURE_DEFAULT);
+ sensor->hblank_ctrl =
+ v4l2_ctrl_new_std(hdl, ops, V4L2_CID_HBLANK, 1, 1, 1, 1);
+ if (sensor->hblank_ctrl)
+ sensor->hblank_ctrl->flags |= V4L2_CTRL_FLAG_READ_ONLY;
+ sensor->vblank_ctrl =
+ v4l2_ctrl_new_std(hdl, ops, V4L2_CID_VBLANK, 1, 1, 1, 1);
+
+ /* Additional control based on device tree properties */
+ if (sensor->ext_leds_mask)
+ sensor->led_ctrl =
+ v4l2_ctrl_new_std_menu(hdl, ops,
+ V4L2_CID_FLASH_LED_MODE,
+ V4L2_FLASH_LED_MODE_FLASH, 0,
+ V4L2_FLASH_LED_MODE_NONE);
+
+ if (hdl->error) {
+ ret = hdl->error;
+ goto free_ctrls;
+ }
+
+ v4l2_ctrl_cluster(2, &sensor->hflip_ctrl);
+ v4l2_ctrl_auto_cluster(4, &sensor->ae_ctrl, V4L2_EXPOSURE_MANUAL, true);
+
+ sensor->sd.ctrl_handler = hdl;
+ return 0;
+
+free_ctrls:
+ v4l2_ctrl_handler_free(hdl);
+ return ret;
+}
+
+/* -----------------------------------------------------------------------------
+ * Videos ops
+ */
+
+static int vd56g3_stream_on(struct vd56g3 *sensor,
+ struct v4l2_subdev_state *state)
+{
+ const struct v4l2_mbus_framefmt *format =
+ v4l2_subdev_state_get_format(state, 0);
+ const struct v4l2_rect *crop =
+ v4l2_subdev_state_get_crop(state, 0);
+ int ret = 0;
+ unsigned int csi_mbps = ((sensor->nb_of_lane == 2) ?
+ VD56G3_LINK_FREQ_DEF_2LANES :
+ VD56G3_LINK_FREQ_DEF_1LANE) * 2 / MEGA;
+ unsigned int binning;
+
+ /* configure clocks */
+ cci_write(sensor->regmap, VD56G3_REG_EXT_CLOCK, sensor->ext_clock,
+ &ret);
+ cci_write(sensor->regmap, VD56G3_REG_CLK_PLL_PREDIV, sensor->pll_prediv,
+ &ret);
+ cci_write(sensor->regmap, VD56G3_REG_CLK_SYS_PLL_MULT, sensor->pll_mult,
+ &ret);
+
+ /* configure output */
+ cci_write(sensor->regmap, VD56G3_REG_FORMAT_CTRL,
+ vd56g3_get_bpp(format->code), &ret);
+ cci_write(sensor->regmap, VD56G3_REG_OIF_CTRL, sensor->oif_ctrl, &ret);
+ cci_write(sensor->regmap, VD56G3_REG_OIF_CSI_BITRATE, csi_mbps, &ret);
+ cci_write(sensor->regmap, VD56G3_REG_OIF_IMG_CTRL,
+ vd56g3_get_datatype(format->code), &ret);
+ cci_write(sensor->regmap, VD56G3_REG_ISL_ENABLE, 0, &ret);
+
+ /* configure binning mode */
+ switch (crop->width / format->width) {
+ case 1:
+ default:
+ binning = READOUT_NORMAL;
+ break;
+ case 2:
+ binning = READOUT_DIGITAL_BINNING_X2;
+ break;
+ }
+ cci_write(sensor->regmap, VD56G3_REG_READOUT_CTRL, binning, &ret);
+
+ /* configure ROIs */
+ cci_write(sensor->regmap, VD56G3_REG_Y_START, crop->top, &ret);
+ cci_write(sensor->regmap, VD56G3_REG_Y_END,
+ crop->top + crop->height - 1, &ret);
+ cci_write(sensor->regmap, VD56G3_REG_OUT_ROI_X_START, crop->left, &ret);
+ cci_write(sensor->regmap, VD56G3_REG_OUT_ROI_X_END,
+ crop->left + crop->width - 1, &ret);
+ cci_write(sensor->regmap, VD56G3_REG_OUT_ROI_Y_START, 0, &ret);
+ cci_write(sensor->regmap, VD56G3_REG_OUT_ROI_Y_END, crop->height - 1,
+ &ret);
+ cci_write(sensor->regmap, VD56G3_REG_AE_ROI_START_H, crop->left, &ret);
+ cci_write(sensor->regmap, VD56G3_REG_AE_ROI_END_H,
+ crop->left + crop->width - 1, &ret);
+ cci_write(sensor->regmap, VD56G3_REG_AE_ROI_START_V, 0, &ret);
+ cci_write(sensor->regmap, VD56G3_REG_AE_ROI_END_V, crop->height - 1,
+ &ret);
+ if (ret)
+ return ret;
+
+ /* Setup default GPIO values; could be overridden by V4L2 ctrl setup */
+ ret = vd56g3_write_gpiox(sensor, GENMASK(VD56G3_NB_GPIOS - 1, 0));
+ if (ret)
+ return ret;
+
+ /* Apply settings from V4L2 ctrls */
+ ret = __v4l2_ctrl_handler_setup(&sensor->ctrl_handler);
+ if (ret)
+ return ret;
+
+ /* start streaming */
+ cci_write(sensor->regmap, VD56G3_REG_STBY, VD56G3_CMD_START_STREAM,
+ &ret);
+ vd56g3_poll_reg(sensor, VD56G3_REG_STBY, VD56G3_CMD_ACK, &ret);
+ vd56g3_wait_state(sensor, VD56G3_SYSTEM_FSM_STREAMING, &ret);
+
+ return ret;
+}
+
+static int vd56g3_stream_off(struct vd56g3 *sensor)
+{
+ int ret = 0;
+
+ /* Retrieve Expo cluster to enable coldstart of AE */
+ ret = vd56g3_read_expo_cluster(sensor, true);
+
+ cci_write(sensor->regmap, VD56G3_REG_STREAMING, VD56G3_CMD_STOP_STREAM,
+ &ret);
+ vd56g3_poll_reg(sensor, VD56G3_REG_STREAMING, VD56G3_CMD_ACK, &ret);
+ vd56g3_wait_state(sensor, VD56G3_SYSTEM_FSM_SW_STBY, &ret);
+
+ return ret;
+}
+
+static int vd56g3_s_stream(struct v4l2_subdev *sd, int enable)
+{
+ struct vd56g3 *sensor = to_vd56g3(sd);
+ struct i2c_client *client = v4l2_get_subdevdata(sd);
+ int ret = 0;
+
+ struct v4l2_subdev_state *state =
+ v4l2_subdev_lock_and_get_active_state(sd);
+
+ if (enable) {
+ ret = pm_runtime_resume_and_get(&client->dev);
+ if (ret < 0)
+ goto unlock;
+ ret = vd56g3_stream_on(sensor, state);
+ if (ret) {
+ dev_err(&client->dev, "Failed to start streaming\n");
+ pm_runtime_put_sync(&client->dev);
+ }
+ } else {
+ vd56g3_stream_off(sensor);
+ pm_runtime_mark_last_busy(&client->dev);
+ pm_runtime_put_autosuspend(&client->dev);
+ }
+
+unlock:
+ v4l2_subdev_unlock_state(state);
+ if (!ret) {
+ sensor->streaming = enable;
+ v4l2_ctrl_grab(sensor->hflip_ctrl, enable);
+ v4l2_ctrl_grab(sensor->vflip_ctrl, enable);
+ v4l2_ctrl_grab(sensor->patgen_ctrl, enable);
+ }
+
+ return ret;
+}
+
+static const struct v4l2_subdev_video_ops vd56g3_video_ops = {
+ .s_stream = vd56g3_s_stream,
+};
+
+/* -----------------------------------------------------------------------------
+ * Pad ops
+ */
+
+/* Media bus code is dependent of :
+ * - 8bits or 10bits output
+ * - variant : Mono or RGB
+ * - H/V flips parameters in case of RGB
+ */
+static u32 vd56g3_get_mbus_code(struct vd56g3 *sensor, u32 code)
+{
+ unsigned int i_bpp;
+ unsigned int j;
+
+ for (i_bpp = 0; i_bpp < ARRAY_SIZE(vd56g3_mbus_codes); i_bpp++) {
+ for (j = 0; j < ARRAY_SIZE(vd56g3_mbus_codes[i_bpp]); j++) {
+ if (vd56g3_mbus_codes[i_bpp][j] == code)
+ goto endloops;
+ }
+ }
+
+endloops:
+ if (i_bpp >= ARRAY_SIZE(vd56g3_mbus_codes))
+ i_bpp = 0;
+
+ if (sensor->is_mono)
+ j = 0;
+ else
+ j = 1 + (sensor->hflip_ctrl->val ? 1 : 0) +
+ (sensor->vflip_ctrl->val ? 2 : 0);
+
+ return vd56g3_mbus_codes[i_bpp][j];
+}
+
+static int vd56g3_enum_mbus_code(struct v4l2_subdev *sd,
+ struct v4l2_subdev_state *sd_state,
+ struct v4l2_subdev_mbus_code_enum *code)
+{
+ struct vd56g3 *sensor = to_vd56g3(sd);
+
+ if (code->index >= ARRAY_SIZE(vd56g3_mbus_codes))
+ return -EINVAL;
+
+ code->code =
+ vd56g3_get_mbus_code(sensor, vd56g3_mbus_codes[code->index][0]);
+
+ return 0;
+}
+
+static int vd56g3_enum_frame_size(struct v4l2_subdev *sd,
+ struct v4l2_subdev_state *sd_state,
+ struct v4l2_subdev_frame_size_enum *fse)
+{
+ if (fse->index >= ARRAY_SIZE(vd56g3_supported_modes))
+ return -EINVAL;
+
+ fse->min_width = vd56g3_supported_modes[fse->index].width;
+ fse->max_width = fse->min_width;
+ fse->min_height = vd56g3_supported_modes[fse->index].height;
+ fse->max_height = fse->min_height;
+
+ return 0;
+}
+
+static void vd56g3_update_img_pad_format(struct vd56g3 *sensor,
+ const struct vd56g3_mode *mode,
+ u32 mbus_code,
+ struct v4l2_mbus_framefmt *mbus_fmt)
+{
+ mbus_fmt->width = mode->width;
+ mbus_fmt->height = mode->height;
+ mbus_fmt->code = vd56g3_get_mbus_code(sensor, mbus_code);
+ mbus_fmt->colorspace = V4L2_COLORSPACE_RAW;
+ mbus_fmt->field = V4L2_FIELD_NONE;
+ mbus_fmt->ycbcr_enc = V4L2_YCBCR_ENC_DEFAULT;
+ mbus_fmt->quantization = V4L2_QUANTIZATION_FULL_RANGE;
+ mbus_fmt->xfer_func = V4L2_XFER_FUNC_NONE;
+}
+
+static int vd56g3_set_pad_fmt(struct v4l2_subdev *sd,
+ struct v4l2_subdev_state *sd_state,
+ struct v4l2_subdev_format *sd_fmt)
+{
+ struct vd56g3 *sensor = to_vd56g3(sd);
+ const struct vd56g3_mode *new_mode;
+ struct v4l2_rect pad_crop;
+ unsigned int binning;
+
+ if (sensor->streaming)
+ return -EBUSY;
+
+ new_mode = v4l2_find_nearest_size(vd56g3_supported_modes,
+ ARRAY_SIZE(vd56g3_supported_modes),
+ width, height, sd_fmt->format.width,
+ sd_fmt->format.height);
+
+ vd56g3_update_img_pad_format(sensor, new_mode, sd_fmt->format.code,
+ &sd_fmt->format);
+
+ /* Compute crop rectangle (maximized via binning) */
+ binning = min(VD56G3_NATIVE_WIDTH / sd_fmt->format.width,
+ VD56G3_NATIVE_HEIGHT / sd_fmt->format.height);
+ binning = min(binning, 2U);
+ pad_crop.width = sd_fmt->format.width * binning;
+ pad_crop.height = sd_fmt->format.height * binning;
+ pad_crop.left = (VD56G3_NATIVE_WIDTH - pad_crop.width) / 2;
+ pad_crop.top = (VD56G3_NATIVE_HEIGHT - pad_crop.height) / 2;
+
+ /* Update active state's format and crop */
+ *v4l2_subdev_state_get_format(sd_state, sd_fmt->pad) = sd_fmt->format;
+ *v4l2_subdev_state_get_crop(sd_state, sd_fmt->pad) = pad_crop;
+
+ if (sd_fmt->which == V4L2_SUBDEV_FORMAT_ACTIVE)
+ vd56g3_update_controls(sensor);
+
+ return 0;
+}
+
+static int vd56g3_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:
+ sel->r = *v4l2_subdev_state_get_crop(sd_state, 0);
+ break;
+ case V4L2_SEL_TGT_NATIVE_SIZE:
+ case V4L2_SEL_TGT_CROP_DEFAULT:
+ case V4L2_SEL_TGT_CROP_BOUNDS:
+ sel->r.top = 0;
+ sel->r.left = 0;
+ sel->r.width = VD56G3_NATIVE_WIDTH;
+ sel->r.height = VD56G3_NATIVE_HEIGHT;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int vd56g3_init_state(struct v4l2_subdev *sd,
+ struct v4l2_subdev_state *sd_state)
+{
+ unsigned int def_mode = VD56G3_DEFAULT_MODE;
+ struct v4l2_subdev_format fmt = {
+ .which = V4L2_SUBDEV_FORMAT_TRY,
+ .pad = 0,
+ .format = {
+ .code = vd56g3_mbus_codes[0][0],
+ .width = vd56g3_supported_modes[def_mode].width,
+ .height = vd56g3_supported_modes[def_mode].height,
+ },
+ };
+
+ vd56g3_set_pad_fmt(sd, sd_state, &fmt);
+ return 0;
+}
+
+static const struct v4l2_subdev_core_ops vd56g3_core_ops = {
+ .subscribe_event = v4l2_ctrl_subdev_subscribe_event,
+ .unsubscribe_event = v4l2_event_subdev_unsubscribe,
+};
+
+static const struct v4l2_subdev_pad_ops vd56g3_pad_ops = {
+ .enum_mbus_code = vd56g3_enum_mbus_code,
+ .enum_frame_size = vd56g3_enum_frame_size,
+ .get_fmt = v4l2_subdev_get_fmt,
+ .set_fmt = vd56g3_set_pad_fmt,
+ .get_selection = vd56g3_get_selection,
+};
+
+static const struct v4l2_subdev_ops vd56g3_subdev_ops = {
+ .core = &vd56g3_core_ops,
+ .video = &vd56g3_video_ops,
+ .pad = &vd56g3_pad_ops,
+};
+
+static const struct media_entity_operations vd56g3_subdev_entity_ops = {
+ .link_validate = v4l2_subdev_link_validate,
+};
+
+static const struct v4l2_subdev_internal_ops vd56g3_internal_ops = {
+ .init_state = vd56g3_init_state,
+};
+
+/* -----------------------------------------------------------------------------
+ * Power management
+ */
+
+static int vd56g3_boot(struct vd56g3 *sensor)
+{
+ int ret = 0;
+
+ cci_write(sensor->regmap, VD56G3_REG_BOOT, VD56G3_CMD_BOOT, &ret);
+ vd56g3_poll_reg(sensor, VD56G3_REG_BOOT, VD56G3_CMD_ACK, &ret);
+ vd56g3_wait_state(sensor, VD56G3_SYSTEM_FSM_SW_STBY, &ret);
+
+ return ret;
+}
+
+static int vd56g3_power_on(struct vd56g3 *sensor)
+{
+ struct i2c_client *client = sensor->i2c_client;
+ int ret;
+
+ ret = regulator_bulk_enable(VD56G3_NUM_SUPPLIES, sensor->supplies);
+ if (ret) {
+ dev_err(&client->dev, "Failed to enable regulators %d", ret);
+ return ret;
+ }
+
+ ret = clk_prepare_enable(sensor->xclk);
+ if (ret) {
+ dev_err(&client->dev, "Failed to enable clock %d", ret);
+ goto disable_reg;
+ }
+
+ gpiod_set_value_cansleep(sensor->reset_gpio, 0);
+ ret = vd56g3_wait_state(sensor, VD56G3_SYSTEM_FSM_READY_TO_BOOT, NULL);
+ if (ret) {
+ dev_err(&client->dev, "Sensor reset failed %d\n", ret);
+ goto disable_clock;
+ }
+
+ return 0;
+
+disable_clock:
+ clk_disable_unprepare(sensor->xclk);
+ gpiod_set_value_cansleep(sensor->reset_gpio, 1);
+disable_reg:
+ regulator_bulk_disable(VD56G3_NUM_SUPPLIES, sensor->supplies);
+
+ return ret;
+}
+
+static int vd56g3_power_off(struct vd56g3 *sensor)
+{
+ clk_disable_unprepare(sensor->xclk);
+ gpiod_set_value_cansleep(sensor->reset_gpio, 1);
+ regulator_bulk_disable(VD56G3_NUM_SUPPLIES, sensor->supplies);
+ return 0;
+}
+
+static int vd56g3_runtime_resume(struct device *dev)
+{
+ struct v4l2_subdev *sd = dev_get_drvdata(dev);
+ struct vd56g3 *sensor = to_vd56g3(sd);
+ struct i2c_client *client = sensor->i2c_client;
+ int ret;
+
+ ret = vd56g3_power_on(sensor);
+ if (ret) {
+ dev_err(&client->dev, "Failed to power on %d", ret);
+ return ret;
+ }
+
+ ret = vd56g3_boot(sensor);
+ if (ret) {
+ dev_err(&client->dev, "sensor boot failed %d", ret);
+ return ret;
+ }
+
+ return ret;
+}
+
+static int vd56g3_runtime_suspend(struct device *dev)
+{
+ struct v4l2_subdev *sd = dev_get_drvdata(dev);
+ struct vd56g3 *sensor = to_vd56g3(sd);
+
+ return vd56g3_power_off(sensor);
+}
+
+static const struct dev_pm_ops vd56g3_pm_ops = {
+ SET_RUNTIME_PM_OPS(vd56g3_runtime_suspend, vd56g3_runtime_resume, NULL)
+};
+
+/* -----------------------------------------------------------------------------
+ * Probe and initialization
+ */
+
+static int vd56g3_check_csi_conf(struct vd56g3 *sensor,
+ struct fwnode_handle *endpoint)
+{
+ struct i2c_client *client = sensor->i2c_client;
+ struct v4l2_fwnode_endpoint ep = { .bus_type = V4L2_MBUS_CSI2_DPHY };
+ u32 phy_data_lanes[VD56G3_MAX_CSI_DATA_LANES] = { ~0, ~0 };
+ int n_lanes;
+ int frequency;
+ int p, l;
+ int ret = 0;
+
+ ret = v4l2_fwnode_endpoint_alloc_parse(endpoint, &ep);
+ if (ret)
+ return -EINVAL;
+
+ /* Check lanes number */
+ n_lanes = ep.bus.mipi_csi2.num_data_lanes;
+ if (n_lanes != 1 && n_lanes != 2) {
+ dev_err(&client->dev, "Invalid data lane number %d\n", n_lanes);
+ ret = -EINVAL;
+ goto done;
+ }
+ sensor->nb_of_lane = n_lanes;
+
+ /* Clock lane must be first */
+ if (ep.bus.mipi_csi2.clock_lane != 0) {
+ dev_err(&client->dev, "Clk lane must be mapped to lane 0\n");
+ ret = -EINVAL;
+ goto done;
+ }
+
+ /* Prepare Output Interface conf based on lane settings
+ * logical to physical lane conversion (+ pad remaining slots)
+ */
+ for (l = 0; l < n_lanes; l++)
+ phy_data_lanes[ep.bus.mipi_csi2.data_lanes[l] - 1] = l;
+ for (p = 0; p < VD56G3_MAX_CSI_DATA_LANES; p++) {
+ if (phy_data_lanes[p] != ~0)
+ continue;
+ phy_data_lanes[p] = l;
+ l++;
+ }
+ sensor->oif_ctrl = n_lanes |
+ (ep.bus.mipi_csi2.lane_polarities[0] << 3) |
+ ((phy_data_lanes[0]) << 4) |
+ (ep.bus.mipi_csi2.lane_polarities[1] << 6) |
+ ((phy_data_lanes[1]) << 7) |
+ (ep.bus.mipi_csi2.lane_polarities[2] << 9);
+
+ /* Check link frequency */
+ if (!ep.nr_of_link_frequencies) {
+ dev_err(&client->dev, "link-frequency not found in DT\n");
+ ret = -EINVAL;
+ goto done;
+ }
+ frequency = (n_lanes == 2) ? VD56G3_LINK_FREQ_DEF_2LANES :
+ VD56G3_LINK_FREQ_DEF_1LANE;
+ if (ep.nr_of_link_frequencies != 1 ||
+ ep.link_frequencies[0] != frequency) {
+ dev_err(&client->dev, "Link frequency not supported: %lld\n",
+ ep.link_frequencies[0]);
+ ret = -EINVAL;
+ goto done;
+ }
+
+done:
+ v4l2_fwnode_endpoint_free(&ep);
+ return ret;
+}
+
+static int vd56g3_parse_dt_gpios_array(struct vd56g3 *sensor, char *prop_name,
+ u32 *array, int *nb)
+{
+ struct i2c_client *client = sensor->i2c_client;
+ struct device_node *np = client->dev.of_node;
+ unsigned int i;
+
+ *nb = of_property_read_variable_u32_array(np, prop_name, array, 0,
+ VD56G3_NB_GPIOS);
+
+ if (*nb == -EINVAL) {
+ *nb = 0;
+ return *nb;
+ } else if (*nb < 0) {
+ dev_err(&client->dev, "Failed to read %s prop\n", prop_name);
+ return *nb;
+ }
+
+ for (i = 0; i < *nb; i++) {
+ if (array[i] >= VD56G3_NB_GPIOS) {
+ dev_err(&client->dev, "Invalid GPIO : %d\n", array[i]);
+ return -EINVAL;
+ }
+ }
+
+ return 0;
+}
+
+static int vd56g3_parse_dt_gpios(struct vd56g3 *sensor)
+{
+ u32 led_gpios[VD56G3_NB_GPIOS];
+ int nb_gpios_leds;
+ int ret;
+ unsigned int i;
+
+ /* Initialize GPIOs to default */
+ for (i = 0; i < VD56G3_NB_GPIOS; i++)
+ sensor->gpios[i] = VD56G3_GPIOX_GPIO_IN;
+ sensor->ext_leds_mask = 0;
+
+ /* Take into account optional 'st,leds' output for GPIOs */
+ ret = vd56g3_parse_dt_gpios_array(sensor, "st,leds", led_gpios,
+ &nb_gpios_leds);
+ if (ret)
+ return ret;
+ for (i = 0; i < nb_gpios_leds; i++) {
+ sensor->gpios[led_gpios[i]] = VD56G3_GPIOX_STROBE_MODE;
+ set_bit(led_gpios[i], &sensor->ext_leds_mask);
+ }
+
+ return 0;
+}
+
+static int vd56g3_parse_dt(struct vd56g3 *sensor)
+{
+ struct i2c_client *client = sensor->i2c_client;
+ struct device *dev = &client->dev;
+ struct fwnode_handle *endpoint;
+ int ret;
+
+ endpoint = fwnode_graph_get_endpoint_by_id(dev_fwnode(dev), 0, 0, 0);
+ if (!endpoint) {
+ dev_err(dev, "endpoint node not found\n");
+ return -EINVAL;
+ }
+
+ ret = vd56g3_check_csi_conf(sensor, endpoint);
+ fwnode_handle_put(endpoint);
+ if (ret)
+ return ret;
+
+ ret = vd56g3_parse_dt_gpios(sensor);
+ if (ret)
+ return ret;
+
+ return 0;
+}
+
+static int vd56g3_get_regulators(struct vd56g3 *sensor)
+{
+ int i;
+
+ for (i = 0; i < VD56G3_NUM_SUPPLIES; i++)
+ sensor->supplies[i].supply = vd56g3_supply_names[i];
+
+ return devm_regulator_bulk_get(&sensor->i2c_client->dev,
+ VD56G3_NUM_SUPPLIES, sensor->supplies);
+}
+
+static int vd56g3_prepare_clock_tree(struct vd56g3 *sensor)
+{
+ struct i2c_client *client = sensor->i2c_client;
+ const unsigned int predivs[] = { 1, 2, 4 };
+ u32 pll_out;
+ int i;
+
+ /* External clock must be in [6Mhz-27Mhz] */
+ if (sensor->ext_clock < 6 * HZ_PER_MHZ ||
+ sensor->ext_clock > 27 * HZ_PER_MHZ) {
+ dev_err(&client->dev,
+ "Only 6Mhz-27Mhz clock range supported. Provided %lu MHz\n",
+ sensor->ext_clock / HZ_PER_MHZ);
+ return -EINVAL;
+ }
+
+ /* PLL input should be in [6Mhz-12Mhz[ */
+ for (i = 0; i < ARRAY_SIZE(predivs); i++) {
+ sensor->pll_prediv = predivs[i];
+ if (sensor->ext_clock / sensor->pll_prediv < 12 * HZ_PER_MHZ)
+ break;
+ }
+
+ /* PLL output clock must be as close as possible to 804Mhz */
+ sensor->pll_mult = (VD56G3_TARGET_PLL * sensor->pll_prediv +
+ sensor->ext_clock / 2) /
+ sensor->ext_clock;
+ pll_out = sensor->ext_clock * sensor->pll_mult / sensor->pll_prediv;
+
+ /* Target Pixel Clock for standard 10bit ADC mode : 160.8Mhz */
+ sensor->pixel_clock = pll_out / VD56G3_VT_CLOCK_DIV;
+
+ return 0;
+}
+
+static int vd56g3_detect(struct vd56g3 *sensor)
+{
+ struct i2c_client *client = sensor->i2c_client;
+ struct device *dev = &client->dev;
+ unsigned int model;
+ u64 model_id = 0;
+ u64 device_revision = 0;
+ u64 optical_revision = 0;
+ int ret = 0;
+
+ model = (uintptr_t)device_get_match_data(dev);
+
+ cci_read(sensor->regmap, VD56G3_REG_MODEL_ID, &model_id, &ret);
+ if (ret)
+ return ret;
+
+ if (model_id != VD56G3_MODEL_ID) {
+ dev_warn(&client->dev, "Unsupported sensor id %x",
+ (u16)model_id);
+ return -ENODEV;
+ }
+
+ cci_read(sensor->regmap, VD56G3_REG_REVISION, &device_revision, &ret);
+ if (ret)
+ return ret;
+
+ if ((device_revision >> 8) != 0x31) {
+ dev_warn(&client->dev, "Unsupported Cut version %x",
+ (u16)device_revision);
+ return -ENODEV;
+ }
+
+ cci_read(sensor->regmap, VD56G3_REG_OPTICAL_REVISION, &optical_revision,
+ &ret);
+ if (ret)
+ return ret;
+
+ sensor->is_mono =
+ ((optical_revision & 1) == VD56G3_OPTICAL_REVISION_MONO);
+ if ((sensor->is_mono && model == VD56G3_MODEL_VD66GY) ||
+ (!sensor->is_mono && model == VD56G3_MODEL_VD56G3)) {
+ dev_warn(&client->dev,
+ "Found %s sensor, while %s model is defined in DT",
+ (sensor->is_mono) ? "Mono" : "Bayer",
+ (model == VD56G3_MODEL_VD56G3) ? "vd56g3" : "vd66gy");
+ return -ENODEV;
+ }
+
+ return 0;
+}
+
+static int vd56g3_subdev_init(struct vd56g3 *sensor)
+{
+ struct i2c_client *client = sensor->i2c_client;
+ int ret;
+
+ /* Init sub device */
+ v4l2_i2c_subdev_init(&sensor->sd, client, &vd56g3_subdev_ops);
+ sensor->sd.internal_ops = &vd56g3_internal_ops;
+ sensor->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE |
+ V4L2_SUBDEV_FL_HAS_EVENTS;
+ sensor->sd.entity.ops = &vd56g3_subdev_entity_ops;
+
+ /* Init source pad */
+ sensor->pad.flags = MEDIA_PAD_FL_SOURCE;
+ sensor->sd.entity.function = MEDIA_ENT_F_CAM_SENSOR;
+ ret = media_entity_pads_init(&sensor->sd.entity, 1, &sensor->pad);
+ if (ret) {
+ dev_err(&client->dev, "Failed to init media entity : %d", ret);
+ return ret;
+ }
+
+ /* Init controls */
+ ret = vd56g3_init_controls(sensor);
+ if (ret) {
+ dev_err(&client->dev, "Controls initialization failed %d", ret);
+ goto err_media;
+ }
+
+ /* Init vd56g3 struct : default resolution + raw8 */
+ sensor->streaming = false;
+ sensor->sd.state_lock = sensor->ctrl_handler.lock;
+ ret = v4l2_subdev_init_finalize(&sensor->sd);
+ if (ret) {
+ dev_err(&client->dev, "subdev init error: %d", ret);
+ goto err_ctrls;
+ }
+
+ vd56g3_update_controls(sensor);
+
+ return 0;
+
+err_ctrls:
+ v4l2_ctrl_handler_free(sensor->sd.ctrl_handler);
+
+err_media:
+ media_entity_cleanup(&sensor->sd.entity);
+ return ret;
+}
+
+static void vd56g3_subdev_cleanup(struct vd56g3 *sensor)
+{
+ v4l2_async_unregister_subdev(&sensor->sd);
+ v4l2_subdev_cleanup(&sensor->sd);
+ media_entity_cleanup(&sensor->sd.entity);
+ v4l2_ctrl_handler_free(sensor->sd.ctrl_handler);
+}
+
+static int vd56g3_probe(struct i2c_client *client)
+{
+ struct device *dev = &client->dev;
+ struct vd56g3 *sensor;
+ int ret;
+
+ sensor = devm_kzalloc(dev, sizeof(*sensor), GFP_KERNEL);
+ if (!sensor)
+ return -ENOMEM;
+
+ sensor->i2c_client = client;
+
+ ret = vd56g3_parse_dt(sensor);
+ if (ret) {
+ dev_err(&client->dev, "Failed to parse Device Tree : %d", ret);
+ return ret;
+ }
+
+ /* Get (and check) resources : power regs, ext clock, reset gpio */
+ ret = vd56g3_get_regulators(sensor);
+ if (ret)
+ return dev_err_probe(dev, ret, "Failed to get regulators.");
+
+ sensor->xclk = devm_clk_get(dev, NULL);
+ if (IS_ERR(sensor->xclk))
+ return dev_err_probe(dev, PTR_ERR(sensor->xclk),
+ "Failed to get xclk.");
+ sensor->ext_clock = clk_get_rate(sensor->xclk);
+ ret = vd56g3_prepare_clock_tree(sensor);
+ if (ret)
+ return ret;
+
+ sensor->reset_gpio =
+ devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_HIGH);
+ if (IS_ERR(sensor->reset_gpio))
+ return dev_err_probe(dev, PTR_ERR(sensor->reset_gpio),
+ "Failed to get reset gpio.");
+
+ sensor->regmap = devm_cci_regmap_init_i2c(client, 16);
+ if (IS_ERR(sensor->regmap))
+ return dev_err_probe(dev, PTR_ERR(sensor->regmap),
+ "Failed to init regmap.");
+
+ /* Power ON */
+ ret = vd56g3_power_on(sensor);
+ if (ret) {
+ dev_err(&client->dev, "Sensor power on failed : %d", ret);
+ return ret;
+ }
+
+ /* Enable PM runtime with autosuspend (sensor being ON, set active) */
+ 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);
+
+ /* Check HW model/version */
+ ret = vd56g3_boot(sensor);
+ if (ret) {
+ dev_err(&client->dev, "Sensor boot failed : %d", ret);
+ goto err_power_off;
+ }
+
+ ret = vd56g3_detect(sensor);
+ if (ret) {
+ dev_err(&client->dev, "Sensor detect failed : %d", ret);
+ goto err_power_off;
+ }
+
+ /* Initialize, then register V4L2 subdev */
+ ret = vd56g3_subdev_init(sensor);
+ if (ret) {
+ dev_err(&client->dev, "V4l2 init failed : %d", ret);
+ goto err_power_off;
+ }
+
+ ret = v4l2_async_register_subdev(&sensor->sd);
+ if (ret) {
+ dev_err(&client->dev, "async subdev register failed %d", ret);
+ goto err_subdev;
+ }
+
+ /* Sensor could now be powered off (after the autosuspend delay) */
+ pm_runtime_mark_last_busy(dev);
+ pm_runtime_put_autosuspend(dev);
+
+ dev_dbg(&client->dev, "Successfully probe %s sensor",
+ (sensor->is_mono) ? "vd56g3" : "vd66gy");
+
+ return 0;
+
+err_subdev:
+ vd56g3_subdev_cleanup(sensor);
+err_power_off:
+ pm_runtime_disable(dev);
+ pm_runtime_put_noidle(dev);
+ vd56g3_power_off(sensor);
+ return ret;
+}
+
+static void vd56g3_remove(struct i2c_client *client)
+{
+ struct v4l2_subdev *sd = i2c_get_clientdata(client);
+ struct vd56g3 *sensor = to_vd56g3(sd);
+
+ vd56g3_subdev_cleanup(sensor);
+
+ pm_runtime_disable(&client->dev);
+ if (!pm_runtime_status_suspended(&client->dev))
+ vd56g3_power_off(sensor);
+ pm_runtime_set_suspended(&client->dev);
+}
+
+static const struct of_device_id vd56g3_dt_ids[] = {
+ { .compatible = "st,st-vd56g3", .data = (void *)VD56G3_MODEL_VD56G3 },
+ { .compatible = "st,st-vd66gy", .data = (void *)VD56G3_MODEL_VD66GY },
+ { /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, vd56g3_dt_ids);
+
+static struct i2c_driver vd56g3_i2c_driver = {
+ .driver = {
+ .name = "st-vd56g3",
+ .of_match_table = vd56g3_dt_ids,
+ .pm = &vd56g3_pm_ops,
+ },
+ .probe = vd56g3_probe,
+ .remove = vd56g3_remove,
+};
+
+module_i2c_driver(vd56g3_i2c_driver);
+
+MODULE_AUTHOR("Benjamin Mugnier <benjamin.mugnier@xxxxxxxxxxx>");
+MODULE_AUTHOR("Mickael Guene <mickael.guene@xxxxxx>");
+MODULE_AUTHOR("Sylvain Petinot <sylvain.petinot@xxxxxxxxxxx>");
+MODULE_DESCRIPTION("ST VD56G3 sensor driver");
+MODULE_LICENSE("GPL");
--
2.17.1