--- /dev/null
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Driver for VGXY61 global shutter sensor family driver
+ *
+ * Copyright (C) 2022 STMicroelectronics SA
+ */
+
+#include <asm-generic/unaligned.h>
+#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/regulator/consumer.h>
+#include <linux/units.h>
+#include <media/mipi-csi2.h>
+#include <media/v4l2-async.h>
+#include <media/v4l2-ctrls.h>
+#include <media/v4l2-device.h>
+#include <media/v4l2-fwnode.h>
+#include <media/v4l2-subdev.h>
+
+#define VGXY61_REG_8BIT(n) ((1 << 16) | (n))
+#define VGXY61_REG_16BIT(n) ((2 << 16) | (n))
+#define VGXY61_REG_32BIT(n) ((4 << 16) | (n))
+#define VGXY61_REG_SIZE_SHIFT 16
+#define VGXY61_REG_ADDR_MASK 0xffff
+
+#define VGXY61_REG_MODEL_ID VGXY61_REG_16BIT(0x0000)
+#define VG5661_MODEL_ID 0x5661
+#define VG5761_MODEL_ID 0x5761
+#define VGXY61_REG_REVISION VGXY61_REG_16BIT(0x0002)
+#define VGXY61_REG_FWPATCH_REVISION VGXY61_REG_16BIT(0x0014)
+#define VGXY61_REG_FWPATCH_START_ADDR VGXY61_REG_8BIT(0x2000)
+#define VGXY61_REG_SYSTEM_FSM VGXY61_REG_8BIT(0x0020)
+#define VGXY61_SYSTEM_FSM_SW_STBY 0x03
+#define VGXY61_SYSTEM_FSM_STREAMING 0x04
+#define VGXY61_REG_NVM VGXY61_REG_8BIT(0x0023)
+#define VGXY61_NVM_OK 0x04
+#define VGXY61_REG_STBY VGXY61_REG_8BIT(0x0201)
+#define VGXY61_STBY_NO_REQ 0
+#define VGXY61_STBY_REQ_TMP_READ BIT(2)
+#define VGXY61_REG_STREAMING VGXY61_REG_8BIT(0x0202)
+#define VGXY61_STREAMING_NO_REQ 0
+#define VGXY61_STREAMING_REQ_STOP BIT(0)
+#define VGXY61_STREAMING_REQ_START BIT(1)
+#define VGXY61_REG_EXT_CLOCK VGXY61_REG_32BIT(0x0220)
+#define VGXY61_REG_CLK_PLL_PREDIV VGXY61_REG_8BIT(0x0224)
+#define VGXY61_REG_CLK_SYS_PLL_MULT VGXY61_REG_8BIT(0x0225)
+#define VGXY61_REG_GPIO_0_CTRL VGXY61_REG_8BIT(0x0236)
+#define VGXY61_REG_GPIO_1_CTRL VGXY61_REG_8BIT(0x0237)
+#define VGXY61_REG_GPIO_2_CTRL VGXY61_REG_8BIT(0x0238)
+#define VGXY61_REG_GPIO_3_CTRL VGXY61_REG_8BIT(0x0239)
+#define VGXY61_REG_SIGNALS_POLARITY_CTRL VGXY61_REG_8BIT(0x023b)
+#define VGXY61_REG_LINE_LENGTH VGXY61_REG_16BIT(0x0300)
+#define VGXY61_REG_ORIENTATION VGXY61_REG_8BIT(0x0302)
+#define VGXY61_REG_VT_CTRL VGXY61_REG_8BIT(0x0304)
+#define VGXY61_REG_FORMAT_CTRL VGXY61_REG_8BIT(0x0305)
+#define VGXY61_REG_OIF_CTRL VGXY61_REG_16BIT(0x0306)
+#define VGXY61_REG_OIF_ROI0_CTRL VGXY61_REG_8BIT(0x030a)
+#define VGXY61_REG_ROI0_START_H VGXY61_REG_16BIT(0x0400)
+#define VGXY61_REG_ROI0_START_V VGXY61_REG_16BIT(0x0402)
+#define VGXY61_REG_ROI0_END_H VGXY61_REG_16BIT(0x0404)
+#define VGXY61_REG_ROI0_END_V VGXY61_REG_16BIT(0x0406)
+#define VGXY61_REG_PATGEN_CTRL VGXY61_REG_32BIT(0x0440)
+#define VGXY61_PATGEN_LONG_ENABLE BIT(16)
+#define VGXY61_PATGEN_SHORT_ENABLE BIT(0)
+#define VGXY61_PATGEN_LONG_TYPE_SHIFT 18
+#define VGXY61_PATGEN_SHORT_TYPE_SHIFT 4
+#define VGXY61_REG_FRAME_CONTENT_CTRL VGXY61_REG_8BIT(0x0478)
+#define VGXY61_REG_COARSE_EXPOSURE_LONG VGXY61_REG_16BIT(0x0500)
+#define VGXY61_REG_COARSE_EXPOSURE_SHORT VGXY61_REG_16BIT(0x0504)
+#define VGXY61_REG_ANALOG_GAIN VGXY61_REG_8BIT(0x0508)
+#define VGXY61_REG_DIGITAL_GAIN_LONG VGXY61_REG_16BIT(0x050a)
+#define VGXY61_REG_DIGITAL_GAIN_SHORT VGXY61_REG_16BIT(0x0512)
+#define VGXY61_REG_FRAME_LENGTH VGXY61_REG_16BIT(0x051a)
+#define VGXY61_REG_SIGNALS_CTRL VGXY61_REG_16BIT(0x0522)
+#define VGXY61_SIGNALS_GPIO_ID_SHIFT 4
+#define VGXY61_REG_READOUT_CTRL VGXY61_REG_8BIT(0x0530)
+#define VGXY61_REG_HDR_CTRL VGXY61_REG_8BIT(0x0532)
+#define VGXY61_REG_PATGEN_LONG_DATA_GR VGXY61_REG_16BIT(0x092c)
+#define VGXY61_REG_PATGEN_LONG_DATA_R VGXY61_REG_16BIT(0x092e)
+#define VGXY61_REG_PATGEN_LONG_DATA_B VGXY61_REG_16BIT(0x0930)
+#define VGXY61_REG_PATGEN_LONG_DATA_GB VGXY61_REG_16BIT(0x0932)
+#define VGXY61_REG_PATGEN_SHORT_DATA_GR VGXY61_REG_16BIT(0x0950)
+#define VGXY61_REG_PATGEN_SHORT_DATA_R VGXY61_REG_16BIT(0x0952)
+#define VGXY61_REG_PATGEN_SHORT_DATA_B VGXY61_REG_16BIT(0x0954)
+#define VGXY61_REG_PATGEN_SHORT_DATA_GB VGXY61_REG_16BIT(0x0956)
+#define VGXY61_REG_BYPASS_CTRL VGXY61_REG_8BIT(0x0a60)
+
+#define VGX661_WIDTH 1464
+#define VGX661_HEIGHT 1104
+#define VGX761_WIDTH 1944
+#define VGX761_HEIGHT 1204
+#define VGX661_DEFAULT_MODE 1
+#define VGX761_DEFAULT_MODE 1
+#define VGX661_SHORT_ROT_TERM 93
+#define VGX761_SHORT_ROT_TERM 90
+#define VGXY61_EXPOS_ROT_TERM 66
+#define VGXY61_WRITE_MULTIPLE_CHUNK_MAX 16
+#define VGXY61_NB_GPIOS 4
+#define VGXY61_NB_POLARITIES 5
+#define VGXY61_FRAME_LENGTH_DEF 1313
+#define VGXY61_MIN_FRAME_LENGTH 1288
+#define VGXY61_MIN_EXPOSURE 10
+#define VGXY61_HDR_LINEAR_RATIO 10
+#define VGXY61_TIMEOUT_MS 500
+#define VGXY61_MEDIA_BUS_FMT_DEF MEDIA_BUS_FMT_Y8_1X8
+
+#define VGXY61_FWPATCH_REVISION_MAJOR 2
+#define VGXY61_FWPATCH_REVISION_MINOR 0
+#define VGXY61_FWPATCH_REVISION_MICRO 5
+
+static const u8 patch_array[] = {
+ 0xbf, 0x00, 0x05, 0x20, 0x06, 0x01, 0xe0, 0xe0, 0x04, 0x80, 0xe6, 0x45,
+ 0xed, 0x6f, 0xfe, 0xff, 0x14, 0x80, 0x1f, 0x84, 0x10, 0x42, 0x05, 0x7c,
+ 0x01, 0xc4, 0x1e, 0x80, 0xb6, 0x42, 0x00, 0xe0, 0x1e, 0x82, 0x1e, 0xc0,
+ 0x93, 0xdd, 0xc3, 0xc1, 0x0c, 0x04, 0x00, 0xfa, 0x86, 0x0d, 0x70, 0xe1,
+ 0x04, 0x98, 0x15, 0x00, 0x28, 0xe0, 0x14, 0x02, 0x08, 0xfc, 0x15, 0x40,
+ 0x28, 0xe0, 0x98, 0x58, 0xe0, 0xef, 0x04, 0x98, 0x0e, 0x04, 0x00, 0xf0,
+ 0x15, 0x00, 0x28, 0xe0, 0x19, 0xc8, 0x15, 0x40, 0x28, 0xe0, 0xc6, 0x41,
+ 0xfc, 0xe0, 0x14, 0x80, 0x1f, 0x84, 0x14, 0x02, 0xa0, 0xfc, 0x1e, 0x80,
+ 0x14, 0x80, 0x14, 0x02, 0x80, 0xfb, 0x14, 0x02, 0xe0, 0xfc, 0x1e, 0x80,
+ 0x14, 0xc0, 0x1f, 0x84, 0x14, 0x02, 0xa4, 0xfc, 0x1e, 0xc0, 0x14, 0xc0,
+ 0x14, 0x02, 0x80, 0xfb, 0x14, 0x02, 0xe4, 0xfc, 0x1e, 0xc0, 0x0c, 0x0c,
+ 0x00, 0xf2, 0x93, 0xdd, 0x86, 0x00, 0xf8, 0xe0, 0x04, 0x80, 0xc6, 0x03,
+ 0x70, 0xe1, 0x0e, 0x84, 0x93, 0xdd, 0xc3, 0xc1, 0x0c, 0x04, 0x00, 0xfa,
+ 0x6b, 0x80, 0x06, 0x40, 0x6c, 0xe1, 0x04, 0x80, 0x09, 0x00, 0xe0, 0xe0,
+ 0x0b, 0xa1, 0x95, 0x84, 0x05, 0x0c, 0x1c, 0xe0, 0x86, 0x02, 0xf9, 0x60,
+ 0xe0, 0xcf, 0x78, 0x6e, 0x80, 0xef, 0x25, 0x0c, 0x18, 0xe0, 0x05, 0x4c,
+ 0x1c, 0xe0, 0x86, 0x02, 0xf9, 0x60, 0xe0, 0xcf, 0x0b, 0x84, 0xd8, 0x6d,
+ 0x80, 0xef, 0x05, 0x4c, 0x18, 0xe0, 0x04, 0xd8, 0x0b, 0xa5, 0x95, 0x84,
+ 0x05, 0x0c, 0x2c, 0xe0, 0x06, 0x02, 0x01, 0x60, 0xe0, 0xce, 0x18, 0x6d,
+ 0x80, 0xef, 0x25, 0x0c, 0x30, 0xe0, 0x05, 0x4c, 0x2c, 0xe0, 0x06, 0x02,
+ 0x01, 0x60, 0xe0, 0xce, 0x0b, 0x84, 0x78, 0x6c, 0x80, 0xef, 0x05, 0x4c,
+ 0x30, 0xe0, 0x0c, 0x0c, 0x00, 0xf2, 0x93, 0xdd, 0x46, 0x01, 0x70, 0xe1,
+ 0x08, 0x80, 0x0b, 0xa1, 0x08, 0x5c, 0x00, 0xda, 0x06, 0x01, 0x68, 0xe1,
+ 0x04, 0x80, 0x4a, 0x40, 0x84, 0xe0, 0x08, 0x5c, 0x00, 0x9a, 0x06, 0x01,
+ 0xe0, 0xe0, 0x04, 0x80, 0x15, 0x00, 0x60, 0xe0, 0x19, 0xc4, 0x15, 0x40,
+ 0x60, 0xe0, 0x15, 0x00, 0x78, 0xe0, 0x19, 0xc4, 0x15, 0x40, 0x78, 0xe0,
+ 0x93, 0xdd, 0xc3, 0xc1, 0x46, 0x01, 0x70, 0xe1, 0x08, 0x80, 0x0b, 0xa1,
+ 0x08, 0x5c, 0x00, 0xda, 0x06, 0x01, 0x68, 0xe1, 0x04, 0x80, 0x4a, 0x40,
+ 0x84, 0xe0, 0x08, 0x5c, 0x00, 0x9a, 0x06, 0x01, 0xe0, 0xe0, 0x14, 0x80,
+ 0x25, 0x02, 0x54, 0xe0, 0x29, 0xc4, 0x25, 0x42, 0x54, 0xe0, 0x24, 0x80,
+ 0x35, 0x04, 0x6c, 0xe0, 0x39, 0xc4, 0x35, 0x44, 0x6c, 0xe0, 0x25, 0x02,
+ 0x64, 0xe0, 0x29, 0xc4, 0x25, 0x42, 0x64, 0xe0, 0x04, 0x80, 0x15, 0x00,
+ 0x7c, 0xe0, 0x19, 0xc4, 0x15, 0x40, 0x7c, 0xe0, 0x93, 0xdd, 0xc3, 0xc1,
+ 0x4c, 0x04, 0x7c, 0xfa, 0x86, 0x40, 0x98, 0xe0, 0x14, 0x80, 0x1b, 0xa1,
+ 0x06, 0x00, 0x00, 0xc0, 0x08, 0x42, 0x38, 0xdc, 0x08, 0x64, 0xa0, 0xef,
+ 0x86, 0x42, 0x3c, 0xe0, 0x68, 0x49, 0x80, 0xef, 0x6b, 0x80, 0x78, 0x53,
+ 0xc8, 0xef, 0xc6, 0x54, 0x6c, 0xe1, 0x7b, 0x80, 0xb5, 0x14, 0x0c, 0xf8,
+ 0x05, 0x14, 0x14, 0xf8, 0x1a, 0xac, 0x8a, 0x80, 0x0b, 0x90, 0x38, 0x55,
+ 0x80, 0xef, 0x1a, 0xae, 0x17, 0xc2, 0x03, 0x82, 0x88, 0x65, 0x80, 0xef,
+ 0x1b, 0x80, 0x0b, 0x8e, 0x68, 0x65, 0x80, 0xef, 0x9b, 0x80, 0x0b, 0x8c,
+ 0x08, 0x65, 0x80, 0xef, 0x6b, 0x80, 0x0b, 0x92, 0x1b, 0x8c, 0x98, 0x64,
+ 0x80, 0xef, 0x1a, 0xec, 0x9b, 0x80, 0x0b, 0x90, 0x95, 0x54, 0x10, 0xe0,
+ 0xa8, 0x53, 0x80, 0xef, 0x1a, 0xee, 0x17, 0xc2, 0x03, 0x82, 0xf8, 0x63,
+ 0x80, 0xef, 0x1b, 0x80, 0x0b, 0x8e, 0xd8, 0x63, 0x80, 0xef, 0x1b, 0x8c,
+ 0x68, 0x63, 0x80, 0xef, 0x6b, 0x80, 0x0b, 0x92, 0x65, 0x54, 0x14, 0xe0,
+ 0x08, 0x65, 0x84, 0xef, 0x68, 0x63, 0x80, 0xef, 0x7b, 0x80, 0x0b, 0x8c,
+ 0xa8, 0x64, 0x84, 0xef, 0x08, 0x63, 0x80, 0xef, 0x14, 0xe8, 0x46, 0x44,
+ 0x94, 0xe1, 0x24, 0x88, 0x4a, 0x4e, 0x04, 0xe0, 0x14, 0xea, 0x1a, 0x04,
+ 0x08, 0xe0, 0x0a, 0x40, 0x84, 0xed, 0x0c, 0x04, 0x00, 0xe2, 0x4a, 0x40,
+ 0x04, 0xe0, 0x19, 0x16, 0xc0, 0xe0, 0x0a, 0x40, 0x84, 0xed, 0x21, 0x54,
+ 0x60, 0xe0, 0x0c, 0x04, 0x00, 0xe2, 0x1b, 0xa5, 0x0e, 0xea, 0x01, 0x89,
+ 0x21, 0x54, 0x64, 0xe0, 0x7e, 0xe8, 0x65, 0x82, 0x1b, 0xa7, 0x26, 0x00,
+ 0x00, 0x80, 0xa5, 0x82, 0x1b, 0xa9, 0x65, 0x82, 0x1b, 0xa3, 0x01, 0x85,
+ 0x16, 0x00, 0x00, 0xc0, 0x01, 0x54, 0x04, 0xf8, 0x06, 0xaa, 0x01, 0x83,
+ 0x06, 0xa8, 0x65, 0x81, 0x06, 0xa8, 0x01, 0x54, 0x04, 0xf8, 0x01, 0x83,
+ 0x06, 0xaa, 0x09, 0x14, 0x18, 0xf8, 0x0b, 0xa1, 0x05, 0x84, 0xc6, 0x42,
+ 0xd4, 0xe0, 0x14, 0x84, 0x01, 0x83, 0x01, 0x54, 0x60, 0xe0, 0x01, 0x54,
+ 0x64, 0xe0, 0x0b, 0x02, 0x90, 0xe0, 0x10, 0x02, 0x90, 0xe5, 0x01, 0x54,
+ 0x88, 0xe0, 0xb5, 0x81, 0xc6, 0x40, 0xd4, 0xe0, 0x14, 0x80, 0x0b, 0x02,
+ 0xe0, 0xe4, 0x10, 0x02, 0x31, 0x66, 0x02, 0xc0, 0x01, 0x54, 0x88, 0xe0,
+ 0x1a, 0x84, 0x29, 0x14, 0x10, 0xe0, 0x1c, 0xaa, 0x2b, 0xa1, 0xf5, 0x82,
+ 0x25, 0x14, 0x10, 0xf8, 0x2b, 0x04, 0xa8, 0xe0, 0x20, 0x44, 0x0d, 0x70,
+ 0x03, 0xc0, 0x2b, 0xa1, 0x04, 0x00, 0x80, 0x9a, 0x02, 0x40, 0x84, 0x90,
+ 0x03, 0x54, 0x04, 0x80, 0x4c, 0x0c, 0x7c, 0xf2, 0x93, 0xdd, 0x00, 0x00,
+ 0x02, 0xa9, 0x00, 0x00, 0x64, 0x4a, 0x40, 0x00, 0x08, 0x2d, 0x58, 0xe0,
+ 0xa8, 0x98, 0x40, 0x00, 0x28, 0x07, 0x34, 0xe0, 0x05, 0xb9, 0x00, 0x00,
+ 0x28, 0x00, 0x41, 0x05, 0x88, 0x00, 0x41, 0x3c, 0x98, 0x00, 0x41, 0x52,
+ 0x04, 0x01, 0x41, 0x79, 0x3c, 0x01, 0x41, 0x6a, 0x3d, 0xfe, 0x00, 0x00,
+};
+
+static const char * const vgxy61_test_pattern_menu[] = {
+ "Disabled",
+ "Solid",
+ "Colorbar",
+ "Gradbar",
+ "Hgrey",
+ "Vgrey",
+ "Dgrey",
+ "PN28",
+};
+
+static const char * const vgxy61_hdr_mode_menu[] = {
+ "HDR linearize",
+ "HDR substraction",
+ "No HDR",
+};
+
+static const char * const vgxy61_supply_name[] = {
+ "VCORE",
+ "VDDIO",
+ "VANA",
+};
+
+static const s64 link_freq[] = {
+ /*
+ * MIPI output freq is 804Mhz / 2, as it uses both rising edge and
+ * falling edges to send data
+ */
+ 402000000ULL
+};
+
+enum vgxy61_bin_mode {
+ VGXY61_BIN_MODE_NORMAL,
+ VGXY61_BIN_MODE_DIGITAL_X2,
+ VGXY61_BIN_MODE_DIGITAL_X4,
+};
+
+enum vgxy61_hdr_mode {
+ VGXY61_HDR_LINEAR,
+ VGXY61_HDR_SUB,
+ VGXY61_NO_HDR,
+};
+
+enum vgxy61_strobe_mode {
+ VGXY61_STROBE_DISABLED,
+ VGXY61_STROBE_LONG,
+ VGXY61_STROBE_ENABLED,
+};
+
+struct vgxy61_mode_info {
+ u32 width;
+ u32 height;
+ enum vgxy61_bin_mode bin_mode;
+ struct v4l2_rect crop;
+};
+
+struct vgxy61_fmt_desc {
+ u32 code;
+ u8 bpp;
+ u8 data_type;
+};
+
+static const struct vgxy61_fmt_desc vgxy61_supported_codes[] = {
+ {
+ .code = MEDIA_BUS_FMT_Y8_1X8,
+ .bpp = 8,
+ .data_type = MIPI_CSI2_DT_RAW8,
+ },
+ {
+ .code = MEDIA_BUS_FMT_Y10_1X10,
+ .bpp = 10,
+ .data_type = MIPI_CSI2_DT_RAW10,
+ },
+ {
+ .code = MEDIA_BUS_FMT_Y12_1X12,
+ .bpp = 12,
+ .data_type = MIPI_CSI2_DT_RAW12,
+ },
+ {
+ .code = MEDIA_BUS_FMT_Y14_1X14,
+ .bpp = 14,
+ .data_type = MIPI_CSI2_DT_RAW14,
+ },
+ {
+ .code = MEDIA_BUS_FMT_Y16_1X16,
+ .bpp = 16,
+ .data_type = MIPI_CSI2_DT_RAW16,
+ },
+};
+
+static const struct vgxy61_mode_info vgx661_mode_data[] = {
+ {
+ .width = VGX661_WIDTH,
+ .height = VGX661_HEIGHT,
+ .bin_mode = VGXY61_BIN_MODE_NORMAL,
+ .crop = {
+ .left = 0,
+ .top = 0,
+ .width = VGX661_WIDTH,
+ .height = VGX661_HEIGHT,
+ },
+ },
+ {
+ .width = 1280,
+ .height = 720,
+ .bin_mode = VGXY61_BIN_MODE_NORMAL,
+ .crop = {
+ .left = 92,
+ .top = 192,
+ .width = 1280,
+ .height = 720,
+ },
+ },
+ {
+ .width = 640,
+ .height = 480,
+ .bin_mode = VGXY61_BIN_MODE_DIGITAL_X2,
+ .crop = {
+ .left = 92,
+ .top = 72,
+ .width = 1280,
+ .height = 960,
+ },
+ },
+ {
+ .width = 320,
+ .height = 240,
+ .bin_mode = VGXY61_BIN_MODE_DIGITAL_X4,
+ .crop = {
+ .left = 92,
+ .top = 72,
+ .width = 1280,
+ .height = 960,
+ },
+ },
+};
+
+static const struct vgxy61_mode_info vgx761_mode_data[] = {
+ {
+ .width = VGX761_WIDTH,
+ .height = VGX761_HEIGHT,
+ .bin_mode = VGXY61_BIN_MODE_NORMAL,
+ .crop = {
+ .left = 0,
+ .top = 0,
+ .width = VGX761_WIDTH,
+ .height = VGX761_HEIGHT,
+ },
+ },
+ {
+ .width = 1920,
+ .height = 1080,
+ .bin_mode = VGXY61_BIN_MODE_NORMAL,
+ .crop = {
+ .left = 12,
+ .top = 62,
+ .width = 1920,
+ .height = 1080,
+ },
+ },
+ {
+ .width = 1280,
+ .height = 720,
+ .bin_mode = VGXY61_BIN_MODE_NORMAL,
+ .crop = {
+ .left = 332,
+ .top = 242,
+ .width = 1280,
+ .height = 720,
+ },
+ },
+ {
+ .width = 640,
+ .height = 480,
+ .bin_mode = VGXY61_BIN_MODE_DIGITAL_X2,
+ .crop = {
+ .left = 332,
+ .top = 122,
+ .width = 1280,
+ .height = 960,
+ },
+ },
+ {
+ .width = 320,
+ .height = 240,
+ .bin_mode = VGXY61_BIN_MODE_DIGITAL_X4,
+ .crop = {
+ .left = 332,
+ .top = 122,
+ .width = 1280,
+ .height = 960,
+ },
+ },
+};
+
+struct vgxy61_dev {
+ struct i2c_client *i2c_client;
+ struct v4l2_subdev sd;
+ struct media_pad pad;
+ struct regulator_bulk_data supplies[ARRAY_SIZE(vgxy61_supply_name)];
+ struct gpio_desc *reset_gpio;
+ struct clk *xclk;
+ u32 clk_freq;
+ u16 id;
+ u16 sensor_width;
+ u16 sensor_height;
+ u16 oif_ctrl;
+ unsigned int nb_of_lane;
+ u32 data_rate_in_mbps;
+ u32 pclk;
+ u16 line_length;
+ u16 rot_term;
+ bool gpios_polarity;
+ /* Lock to protect all members below */
+ struct mutex lock;
+ struct v4l2_ctrl_handler ctrl_handler;
+ struct v4l2_ctrl *pixel_rate_ctrl;
+ struct v4l2_ctrl *expo_ctrl;
+ struct v4l2_ctrl *vblank_ctrl;
+ struct v4l2_ctrl *vflip_ctrl;
+ struct v4l2_ctrl *hflip_ctrl;
+ bool streaming;
+ struct v4l2_mbus_framefmt fmt;
+ const struct vgxy61_mode_info *sensor_modes;
+ unsigned int sensor_modes_nb;
+ const struct vgxy61_mode_info *default_mode;
+ const struct vgxy61_mode_info *current_mode;
+ bool hflip;
+ bool vflip;
+ enum vgxy61_hdr_mode hdr;
+ u16 expo_long;
+ u16 expo_short;
+ u16 expo_max;
+ u16 expo_min;
+ u16 vblank;
+ u16 vblank_min;
+ u16 frame_length;
+ u16 digital_gain;
+ u8 analog_gain;
+ enum vgxy61_strobe_mode strobe_mode;
+ u32 pattern;
+};
+
+static u8 get_bpp_by_code(__u32 code)
+{
+ unsigned int i;
+
+ for (i = 0; i < ARRAY_SIZE(vgxy61_supported_codes); i++) {
+ if (vgxy61_supported_codes[i].code == code)
+ return vgxy61_supported_codes[i].bpp;
+ }
+ /* Should never happen */
+ WARN(1, "Unsupported code %d. default to 8 bpp", code);
+ return 8;
+}
+
+static u8 get_data_type_by_code(__u32 code)
+{
+ unsigned int i;
+
+ for (i = 0; i < ARRAY_SIZE(vgxy61_supported_codes); i++) {
+ if (vgxy61_supported_codes[i].code == code)
+ return vgxy61_supported_codes[i].data_type;
+ }
+ /* Should never happen */
+ WARN(1, "Unsupported code %d. default to MIPI_CSI2_DT_RAW8 data type",
+ code);
+ return MIPI_CSI2_DT_RAW8;
+}
+
+static void compute_pll_parameters_by_freq(u32 freq, u8 *prediv, u8 *mult)
+{
+ const unsigned int predivs[] = {1, 2, 4};
+ unsigned int i;
+
+ /*
+ * Freq range is [6Mhz-27Mhz] already checked.
+ * Output of divider should be in [6Mhz-12Mhz[.
+ */
+ for (i = 0; i < ARRAY_SIZE(predivs); i++) {
+ *prediv = predivs[i];
+ if (freq / *prediv < 12 * HZ_PER_MHZ)
+ break;
+ }
+ WARN_ON(i == ARRAY_SIZE(predivs));
+
+ /*
+ * Target freq is 804Mhz. Don't change this as it will impact image
+ * quality.
+ */
+ *mult = ((804 * HZ_PER_MHZ) * (*prediv) + freq / 2) / freq;
+}
+
+static s32 get_pixel_rate(struct vgxy61_dev *sensor)
+{
+ return div64_u64((u64)sensor->data_rate_in_mbps * sensor->nb_of_lane,
+ get_bpp_by_code(sensor->fmt.code));
+}
+
+static inline struct vgxy61_dev *to_vgxy61_dev(struct v4l2_subdev *sd)
+{
+ return container_of(sd, struct vgxy61_dev, sd);
+}
+
+static inline struct v4l2_subdev *ctrl_to_sd(struct v4l2_ctrl *ctrl)
+{
+ return &container_of(ctrl->handler, struct vgxy61_dev,
+ ctrl_handler)->sd;
+}
+
+static unsigned int get_chunk_size(struct vgxy61_dev *sensor)
+{
+ struct i2c_adapter *adapter = sensor->i2c_client->adapter;
+ int max_write_len = VGXY61_WRITE_MULTIPLE_CHUNK_MAX;
+
+ if (adapter->quirks && adapter->quirks->max_write_len)
+ max_write_len = adapter->quirks->max_write_len - 2;
+
+ max_write_len = min(max_write_len, VGXY61_WRITE_MULTIPLE_CHUNK_MAX);
+
+ return max(max_write_len, 1);
+}
+
+static int vgxy61_read_multiple(struct vgxy61_dev *sensor, u32 reg,
+ unsigned int len)
+{
+ struct i2c_client *client = sensor->i2c_client;
+ struct i2c_msg msg[2];
+ u8 buf[2];
+ u8 val[sizeof(u32)] = {0};
+ int ret;
+
+ if (len > sizeof(u32))
+ return -EINVAL;
+ buf[0] = reg >> 8;
+ buf[1] = reg & 0xff;
+
+ msg[0].addr = client->addr;
+ msg[0].flags = client->flags;
+ msg[0].buf = buf;
+ msg[0].len = sizeof(buf);
+
+ msg[1].addr = client->addr;
+ msg[1].flags = client->flags | I2C_M_RD;
+ msg[1].buf = val;
+ msg[1].len = len;
+
+ ret = i2c_transfer(client->adapter, msg, 2);
+ if (ret < 0) {
+ dev_dbg(&client->dev, "%s: %x i2c_transfer, reg: %x => %d\n",
+ __func__, client->addr, reg, ret);
+ return ret;
+ }
+
+ return get_unaligned_le32(val);
+}
+
+static inline int vgxy61_read_reg(struct vgxy61_dev *sensor, u32 reg)
+{
+ return vgxy61_read_multiple(sensor, reg & VGXY61_REG_ADDR_MASK,
+ (reg >> VGXY61_REG_SIZE_SHIFT) & 7);
+}
+
+static int vgxy61_write_multiple(struct vgxy61_dev *sensor, u32 reg,
+ const u8 *data, unsigned int len, int *err)
+{
+ struct i2c_client *client = sensor->i2c_client;
+ struct i2c_msg msg;
+ u8 buf[VGXY61_WRITE_MULTIPLE_CHUNK_MAX + 2];
+ unsigned int i;
+ int ret;
+
+ if (err && *err)
+ return *err;
+
+ if (len > VGXY61_WRITE_MULTIPLE_CHUNK_MAX)
+ return -EINVAL;
+ buf[0] = reg >> 8;
+ buf[1] = reg & 0xff;
+ for (i = 0; i < len; i++)
+ buf[i + 2] = data[i];
+
+ msg.addr = client->addr;
+ msg.flags = client->flags;
+ msg.buf = buf;
+ msg.len = len + 2;
+
+ ret = i2c_transfer(client->adapter, &msg, 1);
+ if (ret < 0) {
+ dev_dbg(&client->dev, "%s: i2c_transfer, reg: %x => %d\n",
+ __func__, reg, ret);
+ if (err)
+ *err = ret;
+ return ret;
+ }
+
+ return 0;
+}
+
+static int vgxy61_write_array(struct vgxy61_dev *sensor, u32 reg,
+ unsigned int nb, const u8 *array)
+{
+ const unsigned int chunk_size = get_chunk_size(sensor);
+ int ret;
+ unsigned int sz;
+
+ while (nb) {
+ sz = min(nb, chunk_size);
+ ret = vgxy61_write_multiple(sensor, reg, array, sz, NULL);
+ if (ret < 0)
+ return ret;
+ nb -= sz;
+ reg += sz;
+ array += sz;
+ }
+
+ return 0;
+}
+
+static inline int vgxy61_write_reg(struct vgxy61_dev *sensor, u32 reg, u32 val,
+ int *err)
+{
+ return vgxy61_write_multiple(sensor, reg & VGXY61_REG_ADDR_MASK,
+ (u8 *)&val,
+ (reg >> VGXY61_REG_SIZE_SHIFT) & 7, err);
+}
+
+static int vgxy61_poll_reg(struct vgxy61_dev *sensor, u32 reg, u8 poll_val,
+ unsigned int timeout_ms)
+{
+ const unsigned int loop_delay_ms = 10;
+ int ret;
+
+ return read_poll_timeout(vgxy61_read_reg, ret,
+ ((ret < 0) || (ret == poll_val)),
+ loop_delay_ms * 1000, timeout_ms * 1000,
+ false, sensor, reg);
+}
+
+static int vgxy61_wait_state(struct vgxy61_dev *sensor, int state,
+ unsigned int timeout_ms)
+{
+ return vgxy61_poll_reg(sensor, VGXY61_REG_SYSTEM_FSM, state,
+ timeout_ms);
+}
+
+static int vgxy61_check_bw(struct vgxy61_dev *sensor)
+{
+ /*
+ * Simplification of time needed to send short packets and for the MIPI
+ * to add transition times (EoT, LPS, and SoT packet delimiters) needed
+ * by the protocol to go in low power between 2 packets of data. This
+ * is a mipi IP constant for the sensor.
+ */
+ const unsigned int mipi_margin = 1056;
+ unsigned int binning_scale = sensor->current_mode->crop.height /
+ sensor->current_mode->height;
+ u8 bpp = get_bpp_by_code(sensor->fmt.code);
+ unsigned int max_bit_per_line;
+ unsigned int bit_per_line;
+ u64 line_rate;
+
+ line_rate = sensor->nb_of_lane * (u64)sensor->data_rate_in_mbps *
+ sensor->line_length;
+ max_bit_per_line = div64_u64(line_rate, sensor->pclk) - mipi_margin;
+ bit_per_line = (bpp * sensor->current_mode->width) / binning_scale;
+
+ return bit_per_line > max_bit_per_line ? -EINVAL : 0;
+}
+
+static int vgxy61_apply_exposure(struct vgxy61_dev *sensor)
+{
+ int ret = 0;
+
+ /* We first set expo to zero to avoid forbidden parameters couple */
+ vgxy61_write_reg(sensor, VGXY61_REG_COARSE_EXPOSURE_SHORT, 0, &ret);
+ vgxy61_write_reg(sensor, VGXY61_REG_COARSE_EXPOSURE_LONG,
+ sensor->expo_long, &ret);
+ vgxy61_write_reg(sensor, VGXY61_REG_COARSE_EXPOSURE_SHORT,
+ sensor->expo_short, &ret);
+
+ return ret;
+}
+
+static int vgxy61_get_regulators(struct vgxy61_dev *sensor)
+{
+ unsigned int i;
+
+ for (i = 0; i < ARRAY_SIZE(vgxy61_supply_name); i++)
+ sensor->supplies[i].supply = vgxy61_supply_name[i];
+
+ return devm_regulator_bulk_get(&sensor->i2c_client->dev,
+ ARRAY_SIZE(vgxy61_supply_name),
+ sensor->supplies);
+}
+
+static int vgxy61_apply_reset(struct vgxy61_dev *sensor)
+{
+ gpiod_set_value_cansleep(sensor->reset_gpio, 0);
+ usleep_range(5000, 10000);
+ gpiod_set_value_cansleep(sensor->reset_gpio, 1);
+ usleep_range(5000, 10000);
+ gpiod_set_value_cansleep(sensor->reset_gpio, 0);
+ usleep_range(40000, 100000);
+ return vgxy61_wait_state(sensor, VGXY61_SYSTEM_FSM_SW_STBY,
+ VGXY61_TIMEOUT_MS);
+}
+
+static void vgxy61_fill_framefmt(struct vgxy61_dev *sensor,
+ const struct vgxy61_mode_info *mode,
+ struct v4l2_mbus_framefmt *fmt, u32 code)
+{
+ fmt->code = code;
+ fmt->width = mode->width;
+ fmt->height = mode->height;
+ fmt->colorspace = V4L2_COLORSPACE_RAW;
+ fmt->field = V4L2_FIELD_NONE;
+ fmt->ycbcr_enc = V4L2_YCBCR_ENC_DEFAULT;
+ fmt->quantization = V4L2_QUANTIZATION_DEFAULT;
+ fmt->xfer_func = V4L2_XFER_FUNC_DEFAULT;
+}
+
+static int vgxy61_try_fmt_internal(struct v4l2_subdev *sd,
+ struct v4l2_mbus_framefmt *fmt,
+ const struct vgxy61_mode_info **new_mode)
+{
+ struct vgxy61_dev *sensor = to_vgxy61_dev(sd);
+ const struct vgxy61_mode_info *mode = sensor->sensor_modes;
+ unsigned int index;
+
+ for (index = 0; index < ARRAY_SIZE(vgxy61_supported_codes); index++) {
+ if (vgxy61_supported_codes[index].code == fmt->code)
+ break;
+ }
+ if (index == ARRAY_SIZE(vgxy61_supported_codes))
+ index = 0;
+
+ mode = v4l2_find_nearest_size(sensor->sensor_modes,
+ sensor->sensor_modes_nb, width, height,
+ fmt->width, fmt->height);
+ if (new_mode)
+ *new_mode = mode;
+
+ vgxy61_fill_framefmt(sensor, mode, fmt,
+ vgxy61_supported_codes[index].code);
+
+ return 0;
+}
+
+static int vgxy61_get_selection(struct v4l2_subdev *sd,
+ struct v4l2_subdev_state *sd_state,
+ struct v4l2_subdev_selection *sel)
+{
+ struct vgxy61_dev *sensor = to_vgxy61_dev(sd);
+
+ switch (sel->target) {
+ case V4L2_SEL_TGT_CROP:
+ sel->r = sensor->current_mode->crop;
+ return 0;
+ 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 = sensor->sensor_width;
+ sel->r.height = sensor->sensor_height;
+ return 0;
+ }
+
+ return -EINVAL;
+}
+
+static int vgxy61_enum_mbus_code(struct v4l2_subdev *sd,
+ struct v4l2_subdev_state *sd_state,
+ struct v4l2_subdev_mbus_code_enum *code)
+{
+ if (code->index >= ARRAY_SIZE(vgxy61_supported_codes))
+ return -EINVAL;
+
+ code->code = vgxy61_supported_codes[code->index].code;
+
+ return 0;
+}
+
+static int vgxy61_get_fmt(struct v4l2_subdev *sd,
+ struct v4l2_subdev_state *sd_state,
+ struct v4l2_subdev_format *format)
+{
+ struct vgxy61_dev *sensor = to_vgxy61_dev(sd);
+ struct v4l2_mbus_framefmt *fmt;
+
+ mutex_lock(&sensor->lock);
+
+ if (format->which == V4L2_SUBDEV_FORMAT_TRY)
+ fmt = v4l2_subdev_get_try_format(&sensor->sd, sd_state,
+ format->pad);
+ else
+ fmt = &sensor->fmt;
+
+ format->format = *fmt;
+
+ mutex_unlock(&sensor->lock);
+
+ return 0;
+}
+
+static u16 vgxy61_get_vblank_min(struct vgxy61_dev *sensor,
+ enum vgxy61_hdr_mode hdr)
+{
+ u16 min_vblank = VGXY61_MIN_FRAME_LENGTH -
+ sensor->current_mode->crop.height;
+ /* Ensure the first rule of thumb can't be negative */
+ u16 min_vblank_hdr = VGXY61_MIN_EXPOSURE + sensor->rot_term + 1;
+
+ if (hdr != VGXY61_NO_HDR)
+ return max(min_vblank, min_vblank_hdr);
+ return min_vblank;
+}
+
+static int vgxy61_enum_frame_size(struct v4l2_subdev *sd,
+ struct v4l2_subdev_state *sd_state,
+ struct v4l2_subdev_frame_size_enum *fse)
+{
+ struct vgxy61_dev *sensor = to_vgxy61_dev(sd);
+
+ if (fse->index >= sensor->sensor_modes_nb)
+ return -EINVAL;
+
+ fse->min_width = sensor->sensor_modes[fse->index].width;
+ fse->max_width = fse->min_width;
+ fse->min_height = sensor->sensor_modes[fse->index].height;
+ fse->max_height = fse->min_height;
+
+ return 0;
+}
+
+static int vgxy61_update_analog_gain(struct vgxy61_dev *sensor, u32 target)
+{
+ sensor->analog_gain = target;
+
+ if (sensor->streaming)
+ return vgxy61_write_reg(sensor, VGXY61_REG_ANALOG_GAIN, target,
+ NULL);
+ return 0;
+}
+
+static int vgxy61_apply_digital_gain(struct vgxy61_dev *sensor,
+ u32 digital_gain)
+{
+ int ret = 0;
+
+ /*
+ * For a monochrome version, configuring DIGITAL_GAIN_LONG_CH0 and
+ * DIGITAL_GAIN_SHORT_CH0 is enough to configure the gain of all
+ * four sub pixels.
+ */
+ vgxy61_write_reg(sensor, VGXY61_REG_DIGITAL_GAIN_LONG, digital_gain,
+ &ret);
+ vgxy61_write_reg(sensor, VGXY61_REG_DIGITAL_GAIN_SHORT, digital_gain,
+ &ret);
+
+ return ret;
+}
+
+static int vgxy61_update_digital_gain(struct vgxy61_dev *sensor, u32 target)
+{
+ sensor->digital_gain = target;
+
+ if (sensor->streaming)
+ return vgxy61_apply_digital_gain(sensor, sensor->digital_gain);
+ return 0;
+}
+
+static int vgxy61_apply_patgen(struct vgxy61_dev *sensor, u32 index)
+{
+ static const u8 index2val[] = {
+ 0x0, 0x1, 0x2, 0x3, 0x10, 0x11, 0x12, 0x13
+ };
+ u32 pattern = index2val[index];
+ u32 reg = (pattern << VGXY61_PATGEN_LONG_TYPE_SHIFT) |
+ (pattern << VGXY61_PATGEN_SHORT_TYPE_SHIFT);
+
+ if (pattern)
+ reg |= VGXY61_PATGEN_LONG_ENABLE | VGXY61_PATGEN_SHORT_ENABLE;
+ return vgxy61_write_reg(sensor, VGXY61_REG_PATGEN_CTRL, reg, NULL);
+}
+
+static int vgxy61_update_patgen(struct vgxy61_dev *sensor, u32 pattern)
+{
+ sensor->pattern = pattern;
+
+ if (sensor->streaming)
+ return vgxy61_apply_patgen(sensor, sensor->pattern);
+ return 0;
+}
+
+static int vgxy61_apply_gpiox_strobe_mode(struct vgxy61_dev *sensor,
+ enum vgxy61_strobe_mode mode,
+ unsigned int idx)
+{
+ static const u8 index2val[] = {0x0, 0x1, 0x3};
+ u16 reg;
+
+ reg = vgxy61_read_reg(sensor, VGXY61_REG_SIGNALS_CTRL);
+ if (reg < 0)
+ return reg;
+ reg &= ~(0xf << (idx * VGXY61_SIGNALS_GPIO_ID_SHIFT));
+ reg |= index2val[mode] << (idx * VGXY61_SIGNALS_GPIO_ID_SHIFT);
+
+ return vgxy61_write_reg(sensor, VGXY61_REG_SIGNALS_CTRL, reg, NULL);
+}
+
+static int vgxy61_update_gpios_strobe_mode(struct vgxy61_dev *sensor,
+ enum vgxy61_hdr_mode hdr)
+{
+ unsigned int i;
+ int ret;
+
+ switch (hdr) {
+ case VGXY61_HDR_LINEAR:
+ sensor->strobe_mode = VGXY61_STROBE_ENABLED;
+ break;
+ case VGXY61_HDR_SUB:
+ case VGXY61_NO_HDR:
+ sensor->strobe_mode = VGXY61_STROBE_LONG;
+ break;
+ default:
+ /* Should never happen */
+ WARN_ON(true);
+ break;
+ }
+
+ if (!sensor->streaming)
+ return 0;
+
+ for (i = 0; i < VGXY61_NB_GPIOS; i++) {
+ ret = vgxy61_apply_gpiox_strobe_mode(sensor,
+ sensor->strobe_mode,
+ i);
+ if (ret)
+ return ret;
+ }
+
+ return 0;
+}
+
+static int vgxy61_update_gpios_strobe_polarity(struct vgxy61_dev *sensor,
+ bool polarity)
+{
+ int ret = 0;
+
+ if (sensor->streaming)
+ return -EBUSY;
+
+ vgxy61_write_reg(sensor, VGXY61_REG_GPIO_0_CTRL, polarity << 1, &ret);
+ vgxy61_write_reg(sensor, VGXY61_REG_GPIO_1_CTRL, polarity << 1, &ret);
+ vgxy61_write_reg(sensor, VGXY61_REG_GPIO_2_CTRL, polarity << 1, &ret);
+ vgxy61_write_reg(sensor, VGXY61_REG_GPIO_3_CTRL, polarity << 1, &ret);
+ vgxy61_write_reg(sensor, VGXY61_REG_SIGNALS_POLARITY_CTRL, polarity,
+ &ret);
+
+ return ret;
+}
+
+static u32 vgxy61_get_expo_long_max(struct vgxy61_dev *sensor,
+ unsigned int short_expo_ratio)
+{
+ u32 first_rot_max_expo, second_rot_max_expo, third_rot_max_expo;
+
+ /* Apply sensor's rules of thumb */
+ /*
+ * Short exposure + height must be less than frame length to avoid bad
+ * pixel line at the botom of the image
+ */
+ first_rot_max_expo =
+ ((sensor->frame_length - sensor->current_mode->crop.height -
+ sensor->rot_term) * short_expo_ratio) - 1;
+
+ /*
+ * Total exposition time must be less than frame length to avoid sensor
+ * crash
+ */
+ second_rot_max_expo =
+ (((sensor->frame_length - VGXY61_EXPOS_ROT_TERM) *
+ short_expo_ratio) / (short_expo_ratio + 1)) - 1;
+
+ /*
+ * Short exposure times 71 must be less than frame length to avoid
+ * sensor crash
+ */
+ third_rot_max_expo = (sensor->frame_length / 71) * short_expo_ratio;
+
+ /* Take the minimum from all rules */
+ return min(min(first_rot_max_expo, second_rot_max_expo),
+ third_rot_max_expo);
+}
+
+static int vgxy61_update_exposure(struct vgxy61_dev *sensor, u16 new_expo_long,
+ enum vgxy61_hdr_mode hdr)
+{
+ struct i2c_client *client = sensor->i2c_client;
+ u16 new_expo_short = 0;
+ u16 expo_short_max = 0;
+ u16 expo_long_min = VGXY61_MIN_EXPOSURE;
+ u16 expo_long_max;
+
+ /* Compute short exposure according to hdr mode and long exposure */
+ switch (hdr) {
+ case VGXY61_HDR_LINEAR:
+ /*
+ * Take ratio into account for minimal exposures in
+ * VGXY61_HDR_LINEAR
+ */
+ expo_long_min = VGXY61_MIN_EXPOSURE * VGXY61_HDR_LINEAR_RATIO;
+ new_expo_long = max(expo_long_min, new_expo_long);
+
+ expo_long_max =
+ vgxy61_get_expo_long_max(sensor,
+ VGXY61_HDR_LINEAR_RATIO);
+ expo_short_max = (expo_long_max +
+ (VGXY61_HDR_LINEAR_RATIO / 2)) /
+ VGXY61_HDR_LINEAR_RATIO;
+ new_expo_short = (new_expo_long +
+ (VGXY61_HDR_LINEAR_RATIO / 2)) /
+ VGXY61_HDR_LINEAR_RATIO;
+ break;
+ case VGXY61_HDR_SUB:
+ new_expo_long = max(expo_long_min, new_expo_long);
+
+ expo_long_max = vgxy61_get_expo_long_max(sensor, 1);
+ /* Short and long are the same in VGXY61_HDR_SUB */
+ expo_short_max = expo_long_max;
+ new_expo_short = new_expo_long;
+ break;
+ case VGXY61_NO_HDR:
+ new_expo_long = max(expo_long_min, new_expo_long);
+
+ /*
+ * As short expo is 0 here, only the second rule of thumb
+ * applies, see vgxy61_get_expo_long_max for more
+ */
+ expo_long_max = sensor->frame_length - VGXY61_EXPOS_ROT_TERM;
+ break;
+ default:
+ /* Should never happen */
+ WARN_ON(true);
+ break;
+ }
+
+ /* If this happens, something is wrong with formulas */
+ WARN_ON(expo_long_min > expo_long_max);
+
+ if (new_expo_long > expo_long_max) {
+ dev_warn(&client->dev, "Exposure %d too high, clamping to %d\n",
+ new_expo_long, expo_long_max);
+ new_expo_long = expo_long_max;
+ new_expo_short = expo_short_max;
+ }
+
+ sensor->expo_long = new_expo_long;
+ sensor->expo_short = new_expo_short;
+ sensor->expo_max = expo_long_max;
+ sensor->expo_min = expo_long_min;
+
+ if (sensor->streaming)
+ return vgxy61_apply_exposure(sensor);
+ return 0;
+}
+
+static int vgxy61_apply_framelength(struct vgxy61_dev *sensor)
+{
+ return vgxy61_write_reg(sensor, VGXY61_REG_FRAME_LENGTH,
+ sensor->frame_length, NULL);
+}
+
+static int vgxy61_update_vblank(struct vgxy61_dev *sensor, u16 vblank,
+ enum vgxy61_hdr_mode hdr)
+{
+ int ret;
+
+ sensor->vblank_min = vgxy61_get_vblank_min(sensor, hdr);
+ sensor->vblank = max(sensor->vblank_min, vblank);
+ sensor->frame_length = sensor->current_mode->crop.height +
+ sensor->vblank;
+
+ /* Update exposure according to vblank */
+ ret = vgxy61_update_exposure(sensor, sensor->expo_long, hdr);
+ if (ret)
+ return ret;
+
+ if (sensor->streaming)
+ return vgxy61_apply_framelength(sensor);
+ return 0;
+}
+
+static int vgxy61_apply_hdr(struct vgxy61_dev *sensor,
+ enum vgxy61_hdr_mode index)
+{
+ static const u8 index2val[] = {0x1, 0x4, 0xa};
+
+ return vgxy61_write_reg(sensor, VGXY61_REG_HDR_CTRL, index2val[index],
+ NULL);
+}
+
+static int vgxy61_update_hdr(struct vgxy61_dev *sensor,
+ enum vgxy61_hdr_mode index)
+{
+ int ret;
+
+ /*
+ * vblank and short exposure change according to HDR mode, do it first
+ * as it can violate sensors 'rule of thumbs' and therefore will require
+ * to change the long exposure.
+ */
+ ret = vgxy61_update_vblank(sensor, sensor->vblank, index);
+ if (ret)
+ return ret;
+
+ /* Update strobe mode according to HDR */
+ ret = vgxy61_update_gpios_strobe_mode(sensor, index);
+ if (ret)
+ return ret;
+
+ sensor->hdr = index;
+
+ if (sensor->streaming)
+ return vgxy61_apply_hdr(sensor, sensor->hdr);
+ return 0;
+}
+
+static int vgxy61_apply_settings(struct vgxy61_dev *sensor)
+{
+ int ret;
+ unsigned int i;
+
+ ret = vgxy61_apply_hdr(sensor, sensor->hdr);
+ if (ret)
+ return ret;
+
+ ret = vgxy61_apply_framelength(sensor);
+ if (ret)
+ return ret;
+
+ ret = vgxy61_apply_exposure(sensor);
+ if (ret)
+ return ret;
+
+ ret = vgxy61_write_reg(sensor, VGXY61_REG_ANALOG_GAIN,
+ sensor->analog_gain, NULL);
+ if (ret)
+ return ret;
+ ret = vgxy61_apply_digital_gain(sensor, sensor->digital_gain);
+ if (ret)
+ return ret;
+
+ ret = vgxy61_write_reg(sensor, VGXY61_REG_ORIENTATION,
+ sensor->hflip | (sensor->vflip << 1), NULL);
+ if (ret)
+ return ret;
+
+ ret = vgxy61_apply_patgen(sensor, sensor->pattern);
+ if (ret)
+ return ret;
+
+ for (i = 0; i < VGXY61_NB_GPIOS; i++) {
+ ret = vgxy61_apply_gpiox_strobe_mode(sensor,
+ sensor->strobe_mode, i);
+ if (ret)
+ return ret;
+ }
+
+ return 0;
+}
+
+static int vgxy61_stream_enable(struct vgxy61_dev *sensor)
+{
+ struct i2c_client *client = v4l2_get_subdevdata(&sensor->sd);
+ const struct v4l2_rect *crop = &sensor->current_mode->crop;
+ int ret = 0;
+
+ ret = vgxy61_check_bw(sensor);
+ if (ret)
+ return ret;
+
+ ret = pm_runtime_get_sync(&client->dev);
+ if (ret < 0) {
+ pm_runtime_put_autosuspend(&client->dev);
+ return ret;
+ }
+
+ vgxy61_write_reg(sensor, VGXY61_REG_FORMAT_CTRL,
+ get_bpp_by_code(sensor->fmt.code), &ret);
+ vgxy61_write_reg(sensor, VGXY61_REG_OIF_ROI0_CTRL,
+ get_data_type_by_code(sensor->fmt.code), &ret);
+
+ vgxy61_write_reg(sensor, VGXY61_REG_READOUT_CTRL,
+ sensor->current_mode->bin_mode, &ret);
+ vgxy61_write_reg(sensor, VGXY61_REG_ROI0_START_H, crop->left, &ret);
+ vgxy61_write_reg(sensor, VGXY61_REG_ROI0_END_H,
+ crop->left + crop->width - 1, &ret);
+ vgxy61_write_reg(sensor, VGXY61_REG_ROI0_START_V, crop->top, &ret);
+ vgxy61_write_reg(sensor, VGXY61_REG_ROI0_END_V,
+ crop->top + crop->height - 1, &ret);
+ if (ret)
+ goto err_rpm_put;
+
+ ret = vgxy61_apply_settings(sensor);
+ if (ret)
+ goto err_rpm_put;
+
+ ret = vgxy61_write_reg(sensor, VGXY61_REG_STREAMING,
+ VGXY61_STREAMING_REQ_START, NULL);
+ if (ret)
+ goto err_rpm_put;
+
+ ret = vgxy61_poll_reg(sensor, VGXY61_REG_STREAMING,
+ VGXY61_STREAMING_NO_REQ, VGXY61_TIMEOUT_MS);
+ if (ret)
+ goto err_rpm_put;
+
+ ret = vgxy61_wait_state(sensor, VGXY61_SYSTEM_FSM_STREAMING,
+ VGXY61_TIMEOUT_MS);
+ if (ret)
+ goto err_rpm_put;
+
+ /* vflip and hflip cannot change during streaming */
+ __v4l2_ctrl_grab(sensor->vflip_ctrl, true);
+ __v4l2_ctrl_grab(sensor->hflip_ctrl, true);
+
+ return 0;
+
+err_rpm_put:
+ pm_runtime_put(&client->dev);
+ return ret;
+}
+
+static int vgxy61_stream_disable(struct vgxy61_dev *sensor)
+{
+ struct i2c_client *client = v4l2_get_subdevdata(&sensor->sd);
+ int ret;
+
+ ret = vgxy61_write_reg(sensor, VGXY61_REG_STREAMING,
+ VGXY61_STREAMING_REQ_STOP, NULL);
+ if (ret)
+ goto err_str_dis;
+
+ ret = vgxy61_poll_reg(sensor, VGXY61_REG_STREAMING,
+ VGXY61_STREAMING_NO_REQ, 2000);
+ if (ret)
+ goto err_str_dis;
+
+ ret = vgxy61_wait_state(sensor, VGXY61_SYSTEM_FSM_SW_STBY,
+ VGXY61_TIMEOUT_MS);
+ if (ret)
+ goto err_str_dis;
+
+ __v4l2_ctrl_grab(sensor->vflip_ctrl, false);
+ __v4l2_ctrl_grab(sensor->hflip_ctrl, false);
+
+err_str_dis:
+ if (ret)
+ WARN(1, "Can't disable stream");
+ pm_runtime_put(&client->dev);
+
+ return ret;
+}
+
+static int vgxy61_s_stream(struct v4l2_subdev *sd, int enable)
+{
+ struct vgxy61_dev *sensor = to_vgxy61_dev(sd);
+ int ret = 0;
+
+ mutex_lock(&sensor->lock);
+
+ ret = enable ? vgxy61_stream_enable(sensor) :
+ vgxy61_stream_disable(sensor);
+ if (!ret)
+ sensor->streaming = enable;
+
+ mutex_unlock(&sensor->lock);
+
+ return ret;
+}
+
+static int vgxy61_set_fmt(struct v4l2_subdev *sd,
+ struct v4l2_subdev_state *sd_state,
+ struct v4l2_subdev_format *format)
+{
+ struct vgxy61_dev *sensor = to_vgxy61_dev(sd);
+ const struct vgxy61_mode_info *new_mode;
+ struct v4l2_mbus_framefmt *fmt;
+ int ret;
+
+ mutex_lock(&sensor->lock);
+
+ if (sensor->streaming) {
+ ret = -EBUSY;
+ goto out;
+ }
+
+ ret = vgxy61_try_fmt_internal(sd, &format->format, &new_mode);
+ if (ret)
+ goto out;
+
+ if (format->which == V4L2_SUBDEV_FORMAT_TRY) {
+ fmt = v4l2_subdev_get_try_format(sd, sd_state, 0);
+ *fmt = format->format;
+ } else if (sensor->current_mode != new_mode ||
+ sensor->fmt.code != format->format.code) {
+ fmt = &sensor->fmt;
+ *fmt = format->format;
+
+ sensor->current_mode = new_mode;
+
+ /* Reset vblank and framelength to default */
+ ret = vgxy61_update_vblank(sensor,
+ VGXY61_FRAME_LENGTH_DEF -
+ new_mode->crop.height,
+ sensor->hdr);
+
+ /* Update controls to reflect new mode */
+ __v4l2_ctrl_s_ctrl_int64(sensor->pixel_rate_ctrl,
+ get_pixel_rate(sensor));
+ __v4l2_ctrl_modify_range(sensor->vblank_ctrl,
+ sensor->vblank_min,
+ 0xffff - new_mode->crop.height,
+ 1, sensor->vblank);
+ __v4l2_ctrl_s_ctrl(sensor->vblank_ctrl, sensor->vblank);
+ __v4l2_ctrl_modify_range(sensor->expo_ctrl, sensor->expo_min,
+ sensor->expo_max, 1,
+ sensor->expo_long);
+ }
+
+out:
+ mutex_unlock(&sensor->lock);
+
+ return ret;
+}
+
+static int vgxy61_init_cfg(struct v4l2_subdev *sd,
+ struct v4l2_subdev_state *sd_state)
+{
+ struct vgxy61_dev *sensor = to_vgxy61_dev(sd);
+ struct v4l2_subdev_format fmt = { 0 };
+
+ sensor->current_mode = sensor->default_mode;
+ vgxy61_fill_framefmt(sensor, sensor->current_mode, &fmt.format,
+ VGXY61_MEDIA_BUS_FMT_DEF);
+
+ return vgxy61_set_fmt(sd, sd_state, &fmt);
+}
+
+static int vgxy61_s_ctrl(struct v4l2_ctrl *ctrl)
+{
+ struct v4l2_subdev *sd = ctrl_to_sd(ctrl);
+ struct vgxy61_dev *sensor = to_vgxy61_dev(sd);
+ const struct vgxy61_mode_info *cur_mode = sensor->current_mode;
+ int ret;
+
+ switch (ctrl->id) {
+ case V4L2_CID_EXPOSURE:
+ ret = vgxy61_update_exposure(sensor, ctrl->val, sensor->hdr);
+ ctrl->val = sensor->expo_long;
+ break;
+ case V4L2_CID_ANALOGUE_GAIN:
+ ret = vgxy61_update_analog_gain(sensor, ctrl->val);
+ break;
+ case V4L2_CID_DIGITAL_GAIN:
+ ret = vgxy61_update_digital_gain(sensor, ctrl->val);
+ break;
+ case V4L2_CID_VFLIP:
+ case V4L2_CID_HFLIP:
+ if (sensor->streaming) {
+ ret = -EBUSY;
+ break;
+ }
+ if (ctrl->id == V4L2_CID_VFLIP)
+ sensor->vflip = ctrl->val;
+ if (ctrl->id == V4L2_CID_HFLIP)
+ sensor->hflip = ctrl->val;
+ ret = 0;
+ break;
+ case V4L2_CID_TEST_PATTERN:
+ ret = vgxy61_update_patgen(sensor, ctrl->val);
+ break;
+ case V4L2_CID_HDR_SENSOR_MODE:
+ ret = vgxy61_update_hdr(sensor, ctrl->val);
+ /* Update vblank and exposure controls to match new hdr */
+ __v4l2_ctrl_modify_range(sensor->vblank_ctrl,
+ sensor->vblank_min,
+ 0xffff - cur_mode->crop.height,
+ 1, sensor->vblank);
+ __v4l2_ctrl_modify_range(sensor->expo_ctrl, sensor->expo_min,
+ sensor->expo_max, 1,
+ sensor->expo_long);
+ break;
+ case V4L2_CID_VBLANK:
+ ret = vgxy61_update_vblank(sensor, ctrl->val, sensor->hdr);
+ /* Update exposure control to match new vblank */
+ __v4l2_ctrl_modify_range(sensor->expo_ctrl, sensor->expo_min,
+ sensor->expo_max, 1,
+ sensor->expo_long);
+ break;
+ default:
+ ret = -EINVAL;
+ break;
+ }
+
+ return ret;
+}
+
+static const struct v4l2_ctrl_ops vgxy61_ctrl_ops = {
+ .s_ctrl = vgxy61_s_ctrl,
+};
+
+static int vgxy61_init_controls(struct vgxy61_dev *sensor)
+{
+ const struct v4l2_ctrl_ops *ops = &vgxy61_ctrl_ops;
+ struct v4l2_ctrl_handler *hdl = &sensor->ctrl_handler;
+ const struct vgxy61_mode_info *cur_mode = sensor->current_mode;
+ struct v4l2_ctrl *ctrl;
+ int ret;
+
+ v4l2_ctrl_handler_init(hdl, 16);
+ /* We can use our own mutex for the ctrl lock */
+ hdl->lock = &sensor->lock;
+ v4l2_ctrl_new_std(hdl, ops, V4L2_CID_ANALOGUE_GAIN, 0, 0x1c, 1,
+ sensor->analog_gain);
+ v4l2_ctrl_new_std(hdl, ops, V4L2_CID_DIGITAL_GAIN, 0, 0xfff, 1,
+ sensor->digital_gain);
+ v4l2_ctrl_new_std_menu_items(hdl, ops, V4L2_CID_TEST_PATTERN,
+ ARRAY_SIZE(vgxy61_test_pattern_menu) - 1,
+ 0, 0, vgxy61_test_pattern_menu);
+ ctrl = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_HBLANK, 0,
+ sensor->line_length, 1,
+ sensor->line_length - cur_mode->width);
+ if (ctrl)
+ ctrl->flags |= V4L2_CTRL_FLAG_READ_ONLY;
+ ctrl = v4l2_ctrl_new_int_menu(hdl, ops, V4L2_CID_LINK_FREQ,
+ ARRAY_SIZE(link_freq) - 1, 0, link_freq);
+ if (ctrl)
+ ctrl->flags |= V4L2_CTRL_FLAG_READ_ONLY;
+ v4l2_ctrl_new_std_menu_items(hdl, ops, V4L2_CID_HDR_SENSOR_MODE,
+ ARRAY_SIZE(vgxy61_hdr_mode_menu) - 1, 0,
+ VGXY61_NO_HDR, vgxy61_hdr_mode_menu);
+
+ /*
+ * Keep a pointer to these controls as we need to update them when
+ * setting the format
+ */
+ sensor->pixel_rate_ctrl = v4l2_ctrl_new_std(hdl, ops,
+ V4L2_CID_PIXEL_RATE, 1,
+ INT_MAX, 1,
+ get_pixel_rate(sensor));
+ if (sensor->pixel_rate_ctrl)
+ sensor->pixel_rate_ctrl->flags |= V4L2_CTRL_FLAG_READ_ONLY;
+ sensor->expo_ctrl = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_EXPOSURE,
+ sensor->expo_min,
+ sensor->expo_max, 1,
+ sensor->expo_long);
+ sensor->vblank_ctrl = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_VBLANK,
+ sensor->vblank_min,
+ 0xffff - cur_mode->crop.height,
+ 1, sensor->vblank);
+ sensor->vflip_ctrl = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_VFLIP,
+ 0, 1, 1, sensor->vflip);
+ sensor->hflip_ctrl = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_HFLIP,
+ 0, 1, 1, sensor->hflip);
+
+ if (hdl->error) {
+ ret = hdl->error;
+ goto free_ctrls;
+ }
+
+ sensor->sd.ctrl_handler = hdl;
+ return 0;
+
+free_ctrls:
+ v4l2_ctrl_handler_free(hdl);
+ return ret;
+}
+
+static const struct v4l2_subdev_video_ops vgxy61_video_ops = {
+ .s_stream = vgxy61_s_stream,
+};
+
+static const struct v4l2_subdev_pad_ops vgxy61_pad_ops = {
+ .init_cfg = vgxy61_init_cfg,
+ .enum_mbus_code = vgxy61_enum_mbus_code,
+ .get_fmt = vgxy61_get_fmt,
+ .set_fmt = vgxy61_set_fmt,
+ .get_selection = vgxy61_get_selection,
+ .enum_frame_size = vgxy61_enum_frame_size,
+};
+
+static const struct v4l2_subdev_ops vgxy61_subdev_ops = {
+ .video = &vgxy61_video_ops,
+ .pad = &vgxy61_pad_ops,
+};
+
+static const struct media_entity_operations vgxy61_subdev_entity_ops = {
+ .link_validate = v4l2_subdev_link_validate,
+};
+
+static int vgxy61_tx_from_ep(struct vgxy61_dev *sensor,
+ struct fwnode_handle *handle)
+{
+ struct v4l2_fwnode_endpoint ep = { .bus_type = V4L2_MBUS_CSI2_DPHY };
+ struct i2c_client *client = sensor->i2c_client;
+ u32 log2phy[VGXY61_NB_POLARITIES] = {~0, ~0, ~0, ~0, ~0};
+ u32 phy2log[VGXY61_NB_POLARITIES] = {~0, ~0, ~0, ~0, ~0};
+ int polarities[VGXY61_NB_POLARITIES] = {0, 0, 0, 0, 0};
+ int l_nb;
+ unsigned int p, l, i;
+ int ret;
+
+ ret = v4l2_fwnode_endpoint_alloc_parse(handle, &ep);
+ if (ret)
+ return -EINVAL;
+
+ l_nb = ep.bus.mipi_csi2.num_data_lanes;
+ if (l_nb != 1 && l_nb != 2 && l_nb != 4) {
+ dev_err(&client->dev, "invalid data lane number %d\n", l_nb);
+ goto error_ep;
+ }
+
+ /* Build log2phy, phy2log and polarities from ep info */
+ log2phy[0] = ep.bus.mipi_csi2.clock_lane;
+ phy2log[log2phy[0]] = 0;
+ for (l = 1; l < l_nb + 1; l++) {
+ log2phy[l] = ep.bus.mipi_csi2.data_lanes[l - 1];
+ phy2log[log2phy[l]] = l;
+ }
+ /*
+ * Then fill remaining slots for every physical slot to have something
+ * valid for hardware stuff.
+ */
+ for (p = 0; p < VGXY61_NB_POLARITIES; p++) {
+ if (phy2log[p] != ~0)
+ continue;
+ phy2log[p] = l;
+ log2phy[l] = p;
+ l++;
+ }
+ for (l = 0; l < l_nb + 1; l++)
+ polarities[l] = ep.bus.mipi_csi2.lane_polarities[l];
+
+ if (log2phy[0] != 0) {
+ dev_err(&client->dev, "clk lane must be map to physical lane 0\n");
+ goto error_ep;
+ }
+ sensor->oif_ctrl = (polarities[4] << 15) + ((phy2log[4] - 1) << 13) +
+ (polarities[3] << 12) + ((phy2log[3] - 1) << 10) +
+ (polarities[2] << 9) + ((phy2log[2] - 1) << 7) +
+ (polarities[1] << 6) + ((phy2log[1] - 1) << 4) +
+ (polarities[0] << 3) +
+ l_nb;
+ sensor->nb_of_lane = l_nb;
+
+ dev_dbg(&client->dev, "tx uses %d lanes", l_nb);
+ for (i = 0; i < 5; i++) {
+ dev_dbg(&client->dev, "log2phy[%d] = %d\n", i, log2phy[i]);
+ dev_dbg(&client->dev, "phy2log[%d] = %d\n", i, phy2log[i]);
+ dev_dbg(&client->dev, "polarity[%d] = %d\n", i, polarities[i]);
+ }
+ dev_dbg(&client->dev, "oif_ctrl = 0x%04x\n", sensor->oif_ctrl);
+
+ v4l2_fwnode_endpoint_free(&ep);
+
+ return 0;
+
+error_ep:
+ v4l2_fwnode_endpoint_free(&ep);
+
+ return -EINVAL;
+}
+
+static int vgxy61_configure(struct vgxy61_dev *sensor)
+{
+ u32 sensor_freq;
+ u8 prediv, mult;
+ u16 line_length;
+ int ret = 0;
+
+ compute_pll_parameters_by_freq(sensor->clk_freq, &prediv, &mult);
+ sensor_freq = (mult * sensor->clk_freq) / prediv;
+ /* Frequency to data rate is 1:1 ratio for MIPI */
+ sensor->data_rate_in_mbps = sensor_freq;
+ /* Video timing ISP path (pixel clock) requires 804/5 mhz = 160 mhz */
+ sensor->pclk = sensor_freq / 5;
+
+ line_length = vgxy61_read_reg(sensor, VGXY61_REG_LINE_LENGTH);
+ if (line_length < 0)
+ return line_length;
+ sensor->line_length = line_length;
+ vgxy61_write_reg(sensor, VGXY61_REG_EXT_CLOCK, sensor->clk_freq, &ret);
+ vgxy61_write_reg(sensor, VGXY61_REG_CLK_PLL_PREDIV, prediv, &ret);
+ vgxy61_write_reg(sensor, VGXY61_REG_CLK_SYS_PLL_MULT, mult, &ret);
+ vgxy61_write_reg(sensor, VGXY61_REG_OIF_CTRL, sensor->oif_ctrl, &ret);
+ vgxy61_write_reg(sensor, VGXY61_REG_FRAME_CONTENT_CTRL, 0, &ret);
+ vgxy61_write_reg(sensor, VGXY61_REG_BYPASS_CTRL, 4, &ret);
+ if (ret)
+ return ret;
+ vgxy61_update_gpios_strobe_polarity(sensor, sensor->gpios_polarity);
+ /* Set pattern generator solid to middle value */
+ vgxy61_write_reg(sensor, VGXY61_REG_PATGEN_LONG_DATA_GR, 0x800, &ret);
+ vgxy61_write_reg(sensor, VGXY61_REG_PATGEN_LONG_DATA_R, 0x800, &ret);
+ vgxy61_write_reg(sensor, VGXY61_REG_PATGEN_LONG_DATA_B, 0x800, &ret);
+ vgxy61_write_reg(sensor, VGXY61_REG_PATGEN_LONG_DATA_GB, 0x800, &ret);
+ vgxy61_write_reg(sensor, VGXY61_REG_PATGEN_SHORT_DATA_GR, 0x800, &ret);
+ vgxy61_write_reg(sensor, VGXY61_REG_PATGEN_SHORT_DATA_R, 0x800, &ret);
+ vgxy61_write_reg(sensor, VGXY61_REG_PATGEN_SHORT_DATA_B, 0x800, &ret);
+ vgxy61_write_reg(sensor, VGXY61_REG_PATGEN_SHORT_DATA_GB, 0x800, &ret);
+ if (ret)
+ return ret;
+
+ return 0;
+}
+
+static int vgxy61_patch(struct vgxy61_dev *sensor)
+{
+ struct i2c_client *client = sensor->i2c_client;
+ u16 patch;
+ int ret;
+
+ ret = vgxy61_write_array(sensor, VGXY61_REG_FWPATCH_START_ADDR,
+ sizeof(patch_array), patch_array);
+ if (ret)
+ return ret;
+
+ ret = vgxy61_write_reg(sensor, VGXY61_REG_STBY, 0x10, NULL);
+ if (ret)
+ return ret;
+
+ ret = vgxy61_poll_reg(sensor, VGXY61_REG_STBY, 0, VGXY61_TIMEOUT_MS);
+ if (ret)
+ return ret;
+
+ patch = vgxy61_read_reg(sensor, VGXY61_REG_FWPATCH_REVISION);
+ if (patch < 0)
+ return patch;
+
+ if (patch != (VGXY61_FWPATCH_REVISION_MAJOR << 12) +
+ (VGXY61_FWPATCH_REVISION_MINOR << 8) +
+ VGXY61_FWPATCH_REVISION_MICRO) {
+ dev_err(&client->dev, "bad patch version expected %d.%d.%d got %d.%d.%d\n",
+ VGXY61_FWPATCH_REVISION_MAJOR,
+ VGXY61_FWPATCH_REVISION_MINOR,
+ VGXY61_FWPATCH_REVISION_MICRO,
+ patch >> 12, (patch >> 8) & 0x0f, patch & 0xff);
+ return -ENODEV;
+ }
+ dev_dbg(&client->dev, "patch %d.%d.%d applied\n",
+ patch >> 12, (patch >> 8) & 0x0f, patch & 0xff);
+
+ return 0;
+}
+
+static int vgxy61_detect_cut_version(struct vgxy61_dev *sensor)
+{
+ struct i2c_client *client = sensor->i2c_client;
+ u16 device_rev;
+
+ device_rev = vgxy61_read_reg(sensor, VGXY61_REG_REVISION);
+ if (device_rev < 0)
+ return device_rev;
+
+ switch (device_rev >> 8) {
+ case 0xA:
+ dev_dbg(&client->dev, "Cut1 detected\n");
+ dev_err(&client->dev, "Cut1 not supported by this driver\n");
+ return -ENODEV;
+ case 0xB:
+ dev_dbg(&client->dev, "Cut2 detected\n");
+ return 0;
+ case 0xC:
+ dev_dbg(&client->dev, "Cut3 detected\n");
+ return 0;
+ default:
+ dev_err(&client->dev, "Unable to detect cut version\n");
+ return -ENODEV;
+ }
+}
+
+static int vgxy61_detect(struct vgxy61_dev *sensor)
+{
+ struct i2c_client *client = sensor->i2c_client;
+ u16 id = 0;
+ int ret;
+ u8 st;
+
+ id = vgxy61_read_reg(sensor, VGXY61_REG_MODEL_ID);
+ if (id < 0)
+ return id;
+ if (id != VG5661_MODEL_ID && id != VG5761_MODEL_ID) {
+ dev_warn(&client->dev, "Unsupported sensor id %x\n", id);
+ return -ENODEV;
+ }
+ dev_dbg(&client->dev, "detected sensor id = 0x%04x\n", id);
+ sensor->id = id;
+
+ ret = vgxy61_wait_state(sensor, VGXY61_SYSTEM_FSM_SW_STBY,
+ VGXY61_TIMEOUT_MS);
+ if (ret)
+ return ret;
+
+ st = vgxy61_read_reg(sensor, VGXY61_REG_NVM);
+ if (st < 0)
+ return st;
+ if (st != VGXY61_NVM_OK)
+ dev_warn(&client->dev, "Bad nvm state got %d\n", st);
+
+ ret = vgxy61_detect_cut_version(sensor);
+ if (ret)
+ return ret;
+
+ return 0;
+}
+
+/* Power/clock management functions */
+static int vgxy61_power_on(struct device *dev)
+{
+ struct i2c_client *client = to_i2c_client(dev);
+ struct v4l2_subdev *sd = i2c_get_clientdata(client);
+ struct vgxy61_dev *sensor = to_vgxy61_dev(sd);
+ int ret;
+
+ ret = clk_prepare_enable(sensor->xclk);
+ if (ret) {
+ dev_err(&client->dev, "failed to enable clock %d\n", ret);
+ goto disable_bulk;
+ }
+
+ if (sensor->reset_gpio) {
+ ret = vgxy61_apply_reset(sensor);
+ if (ret) {
+ dev_err(&client->dev, "sensor reset failed %d\n", ret);
+ goto disable_clock;
+ }
+ }
+
+ ret = vgxy61_patch(sensor);
+ if (ret) {
+ dev_err(&client->dev, "sensor patch failed %d\n", ret);
+ goto disable_clock;
+ }
+
+ ret = vgxy61_configure(sensor);
+ if (ret) {
+ dev_err(&client->dev, "sensor configuration failed %d\n", ret);
+ goto disable_clock;
+ }
+
+ return 0;
+
+disable_clock:
+ clk_disable_unprepare(sensor->xclk);
+disable_bulk:
+ regulator_bulk_disable(ARRAY_SIZE(vgxy61_supply_name),
+ sensor->supplies);
+
+ return ret;
+}
+
+static int vgxy61_power_off(struct device *dev)
+{
+ struct i2c_client *client = to_i2c_client(dev);
+ struct v4l2_subdev *sd = i2c_get_clientdata(client);
+ struct vgxy61_dev *sensor = to_vgxy61_dev(sd);
+
+ clk_disable_unprepare(sensor->xclk);
+ regulator_bulk_disable(ARRAY_SIZE(vgxy61_supply_name),
+ sensor->supplies);
+ return 0;
+}
+
+static void vgxy61_fill_sensor_param(struct vgxy61_dev *sensor)
+{
+ if (sensor->id == VG5761_MODEL_ID) {
+ sensor->sensor_width = VGX761_WIDTH;
+ sensor->sensor_height = VGX761_HEIGHT;
+ sensor->sensor_modes = vgx761_mode_data;
+ sensor->sensor_modes_nb = ARRAY_SIZE(vgx761_mode_data);
+ sensor->default_mode = &vgx761_mode_data[VGX761_DEFAULT_MODE];
+ sensor->rot_term = VGX761_SHORT_ROT_TERM;
+ } else if (sensor->id == VG5661_MODEL_ID) {
+ sensor->sensor_width = VGX661_WIDTH;
+ sensor->sensor_height = VGX661_HEIGHT;
+ sensor->sensor_modes = vgx661_mode_data;
+ sensor->sensor_modes_nb = ARRAY_SIZE(vgx661_mode_data);
+ sensor->default_mode = &vgx661_mode_data[VGX661_DEFAULT_MODE];
+ sensor->rot_term = VGX661_SHORT_ROT_TERM;
+ } else {
+ /* Should never happen */
+ WARN_ON(true);
+ }
+ sensor->current_mode = sensor->default_mode;
+}
+
+static int vgxy61_probe(struct i2c_client *client)
+{
+ struct device *dev = &client->dev;
+ struct fwnode_handle *handle;
+ struct vgxy61_dev *sensor;
+ int ret;
+
+ sensor = devm_kzalloc(dev, sizeof(*sensor), GFP_KERNEL);
+ if (!sensor)
+ return -ENOMEM;
+
+ sensor->i2c_client = client;
+ sensor->streaming = false;
+ sensor->hdr = VGXY61_NO_HDR;
+ sensor->expo_long = 200;
+ sensor->expo_short = 0;
+ sensor->hflip = false;
+ sensor->vflip = false;
+ sensor->analog_gain = 0;
+ sensor->digital_gain = 256;
+
+ handle = fwnode_graph_get_endpoint_by_id(dev_fwnode(dev), 0, 0, 0);
+ if (!handle) {
+ dev_err(dev, "handle node not found\n");
+ return -EINVAL;
+ }
+
+ ret = vgxy61_tx_from_ep(sensor, handle);
+ fwnode_handle_put(handle);
+ if (ret) {
+ dev_err(dev, "Failed to parse handle %d\n", ret);
+ return ret;
+ }
+
+ sensor->xclk = devm_clk_get(dev, NULL);
+ if (IS_ERR(sensor->xclk)) {
+ dev_err(dev, "failed to get xclk\n");
+ return PTR_ERR(sensor->xclk);
+ }
+ sensor->clk_freq = clk_get_rate(sensor->xclk);
+ if (sensor->clk_freq < 6 * HZ_PER_MHZ ||
+ sensor->clk_freq > 27 * HZ_PER_MHZ) {
+ dev_err(dev, "Only 6Mhz-27Mhz clock range supported. provide %lu MHz\n",
+ sensor->clk_freq / HZ_PER_MHZ);
+ return -EINVAL;
+ }
+ sensor->gpios_polarity =
+ device_property_read_bool(dev, "st,strobe-gpios-polarity");
+
+ v4l2_i2c_subdev_init(&sensor->sd, client, &vgxy61_subdev_ops);
+ sensor->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
+ sensor->pad.flags = MEDIA_PAD_FL_SOURCE;
+ sensor->sd.entity.ops = &vgxy61_subdev_entity_ops;
+ sensor->sd.entity.function = MEDIA_ENT_F_CAM_SENSOR;
+
+ sensor->reset_gpio = devm_gpiod_get_optional(dev, "reset",
+ GPIOD_OUT_HIGH);
+
+ ret = vgxy61_get_regulators(sensor);
+ if (ret) {
+ dev_err(&client->dev, "failed to get regulators %d\n", ret);
+ return ret;
+ }
+
+ ret = regulator_bulk_enable(ARRAY_SIZE(vgxy61_supply_name),
+ sensor->supplies);
+ if (ret) {
+ dev_err(&client->dev, "failed to enable regulators %d\n", ret);
+ return ret;
+ }
+
+ ret = vgxy61_power_on(dev);
+ if (ret)
+ return ret;
+
+ ret = vgxy61_detect(sensor);
+ if (ret) {
+ dev_err(&client->dev, "sensor detect failed %d\n", ret);
+ return ret;
+ }
+
+ vgxy61_fill_sensor_param(sensor);
+ vgxy61_fill_framefmt(sensor, sensor->current_mode, &sensor->fmt,
+ VGXY61_MEDIA_BUS_FMT_DEF);
+
+ ret = vgxy61_update_hdr(sensor, sensor->hdr);
+ if (ret)
+ return ret;
+
+ mutex_init(&sensor->lock);
+
+ ret = vgxy61_init_controls(sensor);
+ if (ret) {
+ dev_err(&client->dev, "controls initialization failed %d\n",
+ ret);
+ goto error_power_off;
+ }
+
+ ret = media_entity_pads_init(&sensor->sd.entity, 1, &sensor->pad);
+ if (ret) {
+ dev_err(&client->dev, "pads init failed %d\n", ret);
+ goto error_handler_free;
+ }
+
+ /* Enable runtime PM and turn off the device */
+ pm_runtime_set_active(dev);
+ pm_runtime_enable(dev);
+ pm_runtime_idle(dev);
+
+ ret = v4l2_async_register_subdev(&sensor->sd);
+ if (ret) {
+ dev_err(&client->dev, "async subdev register failed %d\n", ret);
+ goto error_pm_runtime;
+ }
+
+ pm_runtime_set_autosuspend_delay(&client->dev, 1000);
+ pm_runtime_use_autosuspend(&client->dev);
+
+ dev_dbg(&client->dev, "vgxy61 probe successfully\n");
+
+ return 0;
+
+error_pm_runtime:
+ pm_runtime_disable(&client->dev);
+ pm_runtime_set_suspended(&client->dev);
+ media_entity_cleanup(&sensor->sd.entity);
+error_handler_free:
+ v4l2_ctrl_handler_free(sensor->sd.ctrl_handler);
+ mutex_destroy(&sensor->lock);
+error_power_off:
+ vgxy61_power_off(dev);
+
+ return ret;
+}
+
+static void vgxy61_remove(struct i2c_client *client)
+{
+ struct v4l2_subdev *sd = i2c_get_clientdata(client);
+ struct vgxy61_dev *sensor = to_vgxy61_dev(sd);
+
+ v4l2_async_unregister_subdev(&sensor->sd);
+ mutex_destroy(&sensor->lock);
+ media_entity_cleanup(&sensor->sd.entity);
+
+ pm_runtime_disable(&client->dev);
+ if (!pm_runtime_status_suspended(&client->dev))
+ vgxy61_power_off(&client->dev);
+ pm_runtime_set_suspended(&client->dev);
+}
+
+static const struct of_device_id vgxy61_dt_ids[] = {
+ { .compatible = "st,st-vgxy61" },
+ { /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, vgxy61_dt_ids);
+
+static const struct dev_pm_ops vgxy61_pm_ops = {
+ SET_RUNTIME_PM_OPS(vgxy61_power_off, vgxy61_power_on, NULL)
+};
+
+static struct i2c_driver vgxy61_i2c_driver = {
+ .driver = {
+ .name = "st-vgxy61",
+ .of_match_table = vgxy61_dt_ids,
+ .pm = &vgxy61_pm_ops,
+ },
+ .probe_new = vgxy61_probe,
+ .remove = vgxy61_remove,
+};
+
+module_i2c_driver(vgxy61_i2c_driver);
+
+MODULE_AUTHOR("Benjamin Mugnier <benjamin.mugnier@foss.st.com>");
+MODULE_AUTHOR("Mickael Guene <mickael.guene@st.com>");
+MODULE_AUTHOR("Sylvain Petinot <sylvain.petinot@foss.st.com>");
+MODULE_DESCRIPTION("VGXY61 camera subdev driver");
+MODULE_LICENSE("GPL");
projects / platform / kernel / linux-rpi.git / commitdiff