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895b9be378
Linux-6.18.2/drivers/media/i2c/vd55g1.c
zhji 895b9be378 [feat] fisrst commit of linux-6.18.2
2025-12-23 20:06:59 +08:00

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// SPDX-License-Identifier: GPL-2.0
/*
* Driver for VD55G1 global shutter sensor family driver
*
* Copyright (C) 2025 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/property.h>
#include <linux/regmap.h>
#include <linux/regulator/consumer.h>
#include <linux/unaligned.h>
#include <linux/units.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 VD55G1_REG_MODEL_ID CCI_REG32_LE(0x0000)
#define VD55G1_MODEL_ID 0x53354731
#define VD55G1_REG_REVISION CCI_REG16_LE(0x0004)
#define VD55G1_REVISION_CCB 0x2020
#define VD55G1_REG_FWPATCH_REVISION CCI_REG16_LE(0x0012)
#define VD55G1_REG_FWPATCH_START_ADDR CCI_REG8(0x2000)
#define VD55G1_REG_SYSTEM_FSM CCI_REG8(0x001c)
#define VD55G1_SYSTEM_FSM_READY_TO_BOOT 0x01
#define VD55G1_SYSTEM_FSM_SW_STBY 0x02
#define VD55G1_SYSTEM_FSM_STREAMING 0x03
#define VD55G1_REG_BOOT CCI_REG8(0x0200)
#define VD55G1_BOOT_PATCH_SETUP 2
#define VD55G1_REG_STBY CCI_REG8(0x0201)
#define VD55G1_STBY_START_STREAM 1
#define VD55G1_REG_STREAMING CCI_REG8(0x0202)
#define VD55G1_STREAMING_STOP_STREAM 1
#define VD55G1_REG_EXT_CLOCK CCI_REG32_LE(0x0220)
#define VD55G1_REG_LINE_LENGTH CCI_REG16_LE(0x0300)
#define VD55G1_REG_ORIENTATION CCI_REG8(0x0302)
#define VD55G1_REG_FORMAT_CTRL CCI_REG8(0x030a)
#define VD55G1_REG_OIF_CTRL CCI_REG16_LE(0x030c)
#define VD55G1_REG_ISL_ENABLE CCI_REG16_LE(0x326)
#define VD55G1_REG_OIF_IMG_CTRL CCI_REG8(0x030f)
#define VD55G1_REG_MIPI_DATA_RATE CCI_REG32_LE(0x0224)
#define VD55G1_REG_PATGEN_CTRL CCI_REG16_LE(0x0304)
#define VD55G1_PATGEN_TYPE_SHIFT 4
#define VD55G1_PATGEN_ENABLE BIT(0)
#define VD55G1_REG_MANUAL_ANALOG_GAIN CCI_REG8(0x0501)
#define VD55G1_REG_MANUAL_COARSE_EXPOSURE CCI_REG16_LE(0x0502)
#define VD55G1_REG_MANUAL_DIGITAL_GAIN CCI_REG16_LE(0x0504)
#define VD55G1_REG_APPLIED_COARSE_EXPOSURE CCI_REG16_LE(0x00e8)
#define VD55G1_REG_APPLIED_ANALOG_GAIN CCI_REG16_LE(0x00ea)
#define VD55G1_REG_APPLIED_DIGITAL_GAIN CCI_REG16_LE(0x00ec)
#define VD55G1_REG_AE_FORCE_COLDSTART CCI_REG8(0x0308)
#define VD55G1_REG_AE_COLDSTART_EXP_TIME CCI_REG32_LE(0x0374)
#define VD55G1_REG_READOUT_CTRL CCI_REG8(0x052e)
#define VD55G1_READOUT_CTRL_BIN_MODE_NORMAL 0
#define VD55G1_READOUT_CTRL_BIN_MODE_DIGITAL_X2 1
#define VD55G1_REG_DUSTER_CTRL CCI_REG8(0x03ae)
#define VD55G1_DUSTER_ENABLE BIT(0)
#define VD55G1_DUSTER_DISABLE 0
#define VD55G1_DUSTER_DYN_ENABLE BIT(1)
#define VD55G1_DUSTER_RING_ENABLE BIT(4)
#define VD55G1_REG_AE_TARGET_PERCENTAGE CCI_REG8(0x0486)
#define VD55G1_REG_NEXT_CTX CCI_REG16_LE(0x03e4)
#define VD55G1_REG_EXPOSURE_USE_CASES CCI_REG8(0x0312)
#define VD55G1_EXPOSURE_USE_CASES_MULTI_CONTEXT BIT(2)
#define VD55G1_REG_EXPOSURE_MAX_COARSE CCI_REG16_LE(0x0372)
#define VD55G1_EXPOSURE_MAX_COARSE_DEF 0x7fff
#define VD55G1_EXPOSURE_MAX_COARSE_SUB 446
#define VD55G1_REG_CTX_REPEAT_COUNT_CTX0 CCI_REG16_LE(0x03dc)
#define VD55G1_REG_CTX_REPEAT_COUNT_CTX1 CCI_REG16_LE(0x03de)
#define VD55G1_REG_EXP_MODE(ctx) \
CCI_REG8(0x0500 + VD55G1_CTX_OFFSET * (ctx))
#define VD55G1_REG_FRAME_LENGTH(ctx) \
CCI_REG32_LE(0x050c + VD55G1_CTX_OFFSET * (ctx))
#define VD55G1_REG_X_START(ctx) \
CCI_REG16_LE(0x0514 + VD55G1_CTX_OFFSET * (ctx))
#define VD55G1_REG_X_WIDTH(ctx) \
CCI_REG16_LE(0x0516 + VD55G1_CTX_OFFSET * (ctx))
#define VD55G1_REG_Y_START(ctx) \
CCI_REG16_LE(0x0510 + VD55G1_CTX_OFFSET * (ctx))
#define VD55G1_REG_Y_HEIGHT(ctx) \
CCI_REG16_LE(0x0512 + VD55G1_CTX_OFFSET * (ctx))
#define VD55G1_REG_GPIO_0_CTRL(ctx) \
CCI_REG8(0x051d + VD55G1_CTX_OFFSET * (ctx))
#define VD55G1_GPIO_MODE_FSYNC_OUT 0x00
#define VD55G1_GPIO_MODE_IN 0x01
#define VD55G1_GPIO_MODE_STROBE 0x02
#define VD55G1_REG_VT_MODE(ctx) \
CCI_REG8(0x0536 + VD55G1_CTX_OFFSET * (ctx))
#define VD55G1_VT_MODE_NORMAL 0
#define VD55G1_VT_MODE_SUBTRACTION 1
#define VD55G1_REG_MASK_FRAME_CTRL(ctx) \
CCI_REG8(0x0537 + VD55G1_CTX_OFFSET * (ctx))
#define VD55G1_MASK_FRAME_CTRL_OUTPUT 0
#define VD55G1_MASK_FRAME_CTRL_MASK 1
#define VD55G1_REG_EXPOSURE_INSTANCE(ctx) \
CCI_REG32_LE(0x52D + VD55G1_CTX_OFFSET * (ctx))
#define VD55G1_WIDTH 804
#define VD55G1_HEIGHT 704
#define VD55G1_MODE_DEF 0
#define VD55G1_NB_GPIOS 4
#define VD55G1_MBUS_CODE_DEF 0
#define VD55G1_DGAIN_DEF 256
#define VD55G1_AGAIN_DEF 19
#define VD55G1_EXPO_MAX_TERM 64
#define VD55G1_EXPO_DEF 500
#define VD55G1_LINE_LENGTH_MIN 1128
#define VD55G1_LINE_LENGTH_SUB_MIN 1344
#define VD55G1_VBLANK_MIN 86
#define VD55G1_VBLANK_MAX 0xffff
#define VD55G1_FRAME_LENGTH_DEF 1860 /* 60 fps */
#define VD55G1_MIPI_MARGIN 900
#define VD55G1_CTX_OFFSET 0x50
#define VD55G1_FWPATCH_REVISION_MAJOR 2
#define VD55G1_FWPATCH_REVISION_MINOR 9
#define VD55G1_XCLK_FREQ_MIN (6 * HZ_PER_MHZ)
#define VD55G1_XCLK_FREQ_MAX (27 * HZ_PER_MHZ)
#define VD55G1_MIPI_RATE_MIN (250 * MEGA)
#define VD55G1_MIPI_RATE_MAX (1200 * MEGA)
static const u8 patch_array[] = {
0x44, 0x03, 0x09, 0x02, 0xe6, 0x01, 0x42, 0x00, 0xea, 0x01, 0x42, 0x00,
0xf0, 0x01, 0x42, 0x00, 0xe6, 0x01, 0x42, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x4c, 0x00, 0x00, 0xfa, 0x68, 0x40, 0x00, 0xe8,
0x09, 0xbe, 0x4c, 0x08, 0x00, 0xf2, 0x93, 0xdd, 0x1c, 0x00, 0xc0, 0xe2,
0x93, 0xdd, 0xc3, 0xc1, 0x0c, 0x04, 0x00, 0xfa, 0x6b, 0x80, 0x98, 0x7f,
0xfc, 0xef, 0x11, 0xc1, 0x0f, 0x82, 0x69, 0xbe, 0x0f, 0xac, 0x58, 0x40,
0x00, 0xe8, 0x0c, 0x0c, 0x00, 0xf2, 0x93, 0xdd, 0x1c, 0x00, 0x40, 0xe3,
0x93, 0xdd, 0xc3, 0xc1, 0x0c, 0x04, 0x84, 0xfa, 0x46, 0x0e, 0xe8, 0xe0,
0x08, 0xde, 0x4a, 0x40, 0x84, 0xe0, 0xa5, 0x86, 0xa8, 0x7d, 0xfc, 0xef,
0x6b, 0x80, 0x01, 0xbf, 0x28, 0x77, 0x0c, 0xef, 0x0b, 0x0e, 0x21, 0x78,
0x06, 0xc0, 0x0b, 0xa5, 0xb5, 0x84, 0x06, 0x42, 0x98, 0xe1, 0x01, 0x81,
0x01, 0x42, 0x38, 0xe0, 0x0c, 0xc4, 0x0e, 0x84, 0x46, 0x02, 0x84, 0xe0,
0x0c, 0x84, 0x11, 0x81, 0x21, 0x81, 0x31, 0x81, 0x41, 0x81, 0x51, 0x81,
0xc1, 0x81, 0x05, 0x83, 0x0c, 0x0c, 0x84, 0xf2, 0x93, 0xdd, 0x06, 0x40,
0x98, 0xe1, 0xc8, 0x80, 0x58, 0x82, 0x48, 0xc0, 0x38, 0xc2, 0x29, 0x00,
0x10, 0xe0, 0x19, 0x00, 0x14, 0xe0, 0x09, 0x00, 0x38, 0xe0, 0x5f, 0xb8,
0x5f, 0xa8, 0x5f, 0xa6, 0x5f, 0xa4, 0x5f, 0xa2, 0x5f, 0xa0, 0x56, 0x41,
0x98, 0xe1, 0x18, 0x82, 0x28, 0x80, 0x38, 0xc0, 0x5f, 0xa2, 0x19, 0x00,
0x20, 0xf8, 0x5f, 0xa4, 0x28, 0xc2, 0x5f, 0xa6, 0x39, 0x00, 0x10, 0xe0,
0x5f, 0xa2, 0x19, 0x00, 0x14, 0xe0, 0x5f, 0xa4, 0x29, 0x00, 0x18, 0xe0,
0x5f, 0xa6, 0x39, 0x00, 0x40, 0xe0, 0x5f, 0xa2, 0x19, 0x00, 0x44, 0xe0,
0x5f, 0xa4, 0x29, 0x00, 0x1c, 0xe0, 0x5f, 0xa6, 0x39, 0x00, 0x38, 0xe0,
0x5f, 0xa2, 0x19, 0x00, 0x20, 0xe0, 0x5f, 0xa4, 0x29, 0x00, 0x24, 0xe0,
0x5f, 0xa6, 0x39, 0x00, 0x28, 0xe0, 0x5f, 0xa2, 0x19, 0x00, 0x2c, 0xe0,
0x5f, 0xa4, 0x29, 0x00, 0x30, 0xe0, 0x5f, 0xa6, 0x09, 0x00, 0x34, 0xe0,
0x5f, 0xa2, 0x5f, 0xa4, 0x5f, 0xa0, 0x4a, 0x0a, 0xfc, 0xfb, 0xe5, 0x82,
0x08, 0xde, 0x4a, 0x40, 0x88, 0xe0, 0xf6, 0x40, 0x00, 0xe0, 0x01, 0x4e,
0x99, 0x78, 0x0a, 0xc0, 0x85, 0x80, 0x98, 0x40, 0x00, 0xe8, 0x35, 0x81,
0xa8, 0x40, 0x00, 0xe8, 0x0b, 0x8c, 0x0c, 0x0c, 0x84, 0xf2, 0xd5, 0xed,
0x83, 0xc1, 0x13, 0xc5, 0x93, 0xdd, 0xc3, 0xc1, 0x83, 0xc1, 0x13, 0xc3,
0x93, 0xdd, 0xc3, 0xc1, 0x4c, 0x04, 0x04, 0xfa, 0xc6, 0x0f, 0x94, 0xe0,
0x19, 0x0e, 0xc9, 0x65, 0x01, 0xc0, 0x28, 0xde, 0x0a, 0x42, 0x80, 0xe0,
0x24, 0x02, 0x00, 0xfc, 0x16, 0xde, 0xa5, 0x8a, 0x19, 0x00, 0xb8, 0xe0,
0x10, 0x02, 0x0c, 0xec, 0x1d, 0xe6, 0x14, 0x02, 0x88, 0x80, 0x4e, 0x04,
0x01, 0x00, 0x10, 0x80, 0x25, 0x02, 0x08, 0x9c, 0x86, 0x02, 0x00, 0x80,
0x08, 0x44, 0x00, 0x98, 0x55, 0x81, 0x11, 0x85, 0x45, 0x81, 0x11, 0x89,
0x25, 0x81, 0x11, 0x83, 0x2b, 0x00, 0x24, 0xe0, 0x64, 0xc2, 0x0b, 0x84,
0x08, 0x51, 0x00, 0xef, 0x2b, 0x80, 0x01, 0x83, 0x1b, 0x8c, 0x38, 0x7d,
0x5c, 0xef, 0x18, 0xde, 0x0b, 0xa1, 0x25, 0x82, 0x0b, 0x0e, 0x88, 0xf9,
0x0a, 0x00, 0x00, 0xe8, 0x10, 0x42, 0x04, 0x9c, 0x11, 0x4e, 0x0c, 0x80,
0x10, 0x40, 0x04, 0xf0, 0x4e, 0x05, 0x01, 0x60, 0x10, 0xc0, 0x06, 0x88,
0x10, 0x40, 0xf8, 0xf3, 0x06, 0xde, 0x4c, 0x0c, 0x04, 0xf2, 0x93, 0xdd,
0x0c, 0x04, 0x1c, 0xfe, 0xf6, 0x0f, 0x94, 0xe0, 0x38, 0x9c, 0x46, 0x51,
0xfc, 0xe0, 0x46, 0x49, 0x38, 0xe2, 0x30, 0x46, 0xf8, 0xf3, 0x36, 0x9c,
0xc6, 0x46, 0x0c, 0xe1, 0x34, 0x8c, 0x94, 0xa0, 0x4e, 0xa0, 0x39, 0x06,
0x80, 0xe0, 0x4a, 0x46, 0x94, 0xe0, 0x05, 0x8c, 0x6a, 0x40, 0x80, 0xe0,
0x2c, 0x0c, 0x00, 0xe2, 0x0b, 0x8c, 0xb8, 0x7c, 0x5c, 0xef, 0x0b, 0x8c,
0x9e, 0xa0, 0xf8, 0x40, 0x60, 0xef, 0x0b, 0xa1, 0x5a, 0x40, 0x80, 0xe0,
0x65, 0x88, 0x28, 0x02, 0x01, 0x40, 0x00, 0x80, 0x2a, 0x42, 0x9c, 0xe1,
0x28, 0x49, 0x60, 0xef, 0x96, 0x4d, 0x9c, 0xe1, 0x01, 0x81, 0x06, 0x98,
0xd5, 0x81, 0x09, 0x0e, 0xa1, 0x64, 0x01, 0xc0, 0x4a, 0x40, 0x88, 0xe0,
0x85, 0x80, 0xb8, 0x77, 0xfc, 0xef, 0x35, 0x81, 0xc8, 0x77, 0xfc, 0xef,
0x08, 0x98, 0x4a, 0x00, 0xfc, 0xfb, 0x55, 0xfc, 0xe8, 0x4a, 0x60, 0xef,
0x1a, 0x44, 0x9c, 0xe1, 0x35, 0x81, 0x1a, 0x4e, 0x9c, 0xe9, 0x1c, 0x00,
0x00, 0xe2, 0x0c, 0x0c, 0x1c, 0xf6, 0x93, 0xdd, 0x0d, 0xc3, 0x1a, 0x41,
0x08, 0xe4, 0x0a, 0x40, 0x84, 0xe1, 0x0c, 0x00, 0x00, 0xe2, 0x93, 0xdd,
0x4c, 0x04, 0x1c, 0xfa, 0x86, 0x52, 0xec, 0xe1, 0x08, 0xa6, 0x65, 0x12,
0x24, 0xf8, 0x0e, 0x02, 0x99, 0x7a, 0x00, 0xc0, 0x00, 0x40, 0xa0, 0xf3,
0x06, 0xa6, 0x0b, 0x8c, 0x08, 0x49, 0x00, 0xef, 0x85, 0x12, 0x28, 0xf8,
0x02, 0x02, 0xfc, 0xed, 0xf6, 0x47, 0xfd, 0x6f, 0xe0, 0xff, 0x04, 0xe2,
0x14, 0x04, 0xc0, 0xe0, 0x0f, 0x86, 0x2f, 0xa0, 0x0b, 0x8c, 0x2e, 0xe2,
0x08, 0x48, 0x00, 0xef, 0x86, 0x02, 0x84, 0xfe, 0x0e, 0x05, 0x09, 0x7d,
0x00, 0xc0, 0x05, 0x52, 0x08, 0xf8, 0x18, 0x7d, 0xfc, 0xef, 0x4a, 0x40,
0x80, 0xe0, 0x09, 0x12, 0x04, 0xc0, 0x65, 0x12, 0x20, 0xf8, 0x00, 0x40,
0x40, 0xdc, 0x01, 0x52, 0x04, 0xc0, 0x0e, 0x00, 0x41, 0x78, 0xf5, 0xc5,
0x6d, 0xc0, 0xb5, 0x82, 0x05, 0x10, 0x10, 0xe0, 0x11, 0xf1, 0x0f, 0x82,
0x05, 0x50, 0x10, 0xe0, 0x05, 0x10, 0x10, 0xe0, 0xfe, 0x02, 0xf0, 0xff,
0x0f, 0x82, 0x85, 0x83, 0x15, 0x10, 0x10, 0xe0, 0x16, 0x00, 0x91, 0x6e,
0x69, 0xcd, 0x21, 0xf1, 0x6d, 0xc1, 0x01, 0x83, 0x2f, 0x82, 0x26, 0x00,
0x00, 0x80, 0x2f, 0xa0, 0x25, 0x50, 0x10, 0xe0, 0x05, 0x10, 0x10, 0xe0,
0x11, 0xa1, 0xfe, 0x04, 0xf0, 0xff, 0x06, 0x42, 0x00, 0x80, 0x0f, 0x84,
0x0f, 0xa2, 0x05, 0x50, 0x10, 0xe0, 0x16, 0x00, 0x91, 0x6e, 0x69, 0xcd,
0x6d, 0xc1, 0x71, 0x8d, 0x16, 0x00, 0x79, 0x61, 0x2d, 0xcb, 0x86, 0x0e,
0x00, 0x80, 0x6d, 0xc1, 0x56, 0x0e, 0x00, 0xc0, 0x0b, 0x8c, 0x1b, 0x8e,
0x71, 0x52, 0x0c, 0xf8, 0x08, 0x43, 0x00, 0xef, 0x05, 0x52, 0x14, 0xf8,
0x15, 0x10, 0x28, 0xe0, 0x70, 0x04, 0x04, 0xec, 0x31, 0xe1, 0x29, 0x9e,
0x1f, 0x86, 0x1f, 0xa4, 0x15, 0x50, 0x28, 0xe0, 0x86, 0x42, 0x3c, 0xe0,
0x0e, 0x04, 0x9d, 0x64, 0x9b, 0xc2, 0x05, 0x52, 0x1c, 0xf8, 0x78, 0xa6,
0x48, 0x77, 0xfc, 0xef, 0x4a, 0x40, 0x80, 0xe0, 0x70, 0x4e, 0x10, 0xdc,
0x1e, 0x00, 0x81, 0x70, 0xeb, 0xcb, 0x70, 0x4e, 0xec, 0x93, 0x6d, 0xc1,
0x11, 0x85, 0x36, 0x02, 0x00, 0x80, 0x76, 0xa6, 0x11, 0x52, 0x10, 0xf8,
0x05, 0x10, 0x40, 0xe0, 0xfe, 0x47, 0x0c, 0xff, 0x14, 0x04, 0xa0, 0xe0,
0x0f, 0x86, 0x0f, 0xa4, 0x05, 0x50, 0x40, 0xe0, 0x05, 0x10, 0x28, 0xe0,
0xfe, 0x47, 0xfd, 0x7f, 0xe3, 0xff, 0x14, 0x04, 0xd0, 0xe0, 0x0f, 0x86,
0x2f, 0xa0, 0x20, 0x00, 0x01, 0x6c, 0x00, 0xd0, 0x05, 0x50, 0x28, 0xe0,
0x0b, 0x8c, 0xf8, 0x7e, 0xfc, 0xee, 0x0e, 0x03, 0x59, 0x78, 0xf5, 0xc5,
0x0d, 0xc2, 0x05, 0x52, 0x0c, 0xf8, 0x08, 0xa6, 0x46, 0x42, 0xb4, 0xe0,
0x18, 0x84, 0x00, 0x40, 0xf4, 0x93, 0x00, 0x40, 0x08, 0xdc, 0x1b, 0xa1,
0x06, 0xa6, 0x05, 0x10, 0x40, 0x80, 0x04, 0x00, 0x50, 0x9c, 0x65, 0x8a,
0x05, 0x10, 0x44, 0xe0, 0xf6, 0x43, 0xfd, 0x6f, 0x00, 0xf8, 0x0f, 0x82,
0x06, 0x02, 0x01, 0x60, 0x1e, 0xc0, 0x0f, 0xa2, 0x05, 0x50, 0x44, 0xe0,
0x05, 0x10, 0x44, 0xe0, 0x0e, 0x02, 0x00, 0xf8, 0x0f, 0x82, 0x09, 0xf6,
0x05, 0x50, 0x44, 0xe0, 0x05, 0x10, 0x40, 0xe0, 0x04, 0x00, 0x54, 0xfc,
0x05, 0x50, 0x40, 0xe0, 0x05, 0x10, 0x40, 0xe0, 0x04, 0x00, 0xcc, 0xfc,
0x05, 0x50, 0x40, 0xe0, 0x05, 0x10, 0x40, 0xe0, 0x04, 0x00, 0x4c, 0xfc,
0x05, 0x50, 0x40, 0xe0, 0x05, 0x10, 0x40, 0xe0, 0x04, 0x00, 0xd0, 0xfc,
0x05, 0x50, 0x40, 0xe0, 0x4c, 0x0c, 0x1c, 0xf2, 0x93, 0xdd, 0xc3, 0xc1,
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0x74, 0xef, 0x1b, 0x12, 0x1c, 0xf8, 0x2a, 0xfc, 0x0c, 0xe4, 0x17, 0xc5,
0x13, 0x84, 0x13, 0x52, 0x1c, 0xf8, 0x0b, 0x12, 0x04, 0xf8, 0x14, 0x02,
0x80, 0xfb, 0x2b, 0x8c, 0x28, 0x51, 0x74, 0xef, 0x7b, 0x80, 0x7c, 0xa4,
0x08, 0x91, 0xa3, 0x52, 0x1c, 0xe0, 0xa3, 0x52, 0x24, 0xe0, 0x0b, 0xa1,
0x83, 0x52, 0x1c, 0x80, 0x83, 0x52, 0x24, 0x80, 0x89, 0x12, 0x78, 0xf8,
0xf6, 0x57, 0xfc, 0xef, 0x6b, 0x12, 0x1c, 0xf8, 0xab, 0x12, 0x18, 0xf8,
0xd6, 0x57, 0xfc, 0x8f, 0x8b, 0xa3, 0xa0, 0x40, 0x00, 0x9c, 0xa5, 0x86,
0x64, 0x00, 0x80, 0xfb, 0x1b, 0x90, 0xf8, 0x7d, 0xf8, 0xee, 0x6b, 0x80,
0xa4, 0x00, 0x80, 0xfb, 0x1b, 0x90, 0x98, 0x7d, 0xf8, 0xee, 0x15, 0x12,
0x28, 0xf8, 0x19, 0x02, 0xb8, 0xe0, 0x1b, 0xad, 0x95, 0x82, 0x1a, 0xa6,
0xa0, 0x44, 0xf9, 0x73, 0xff, 0xc0, 0x27, 0xc3, 0x13, 0x94, 0x10, 0x02,
0x08, 0xec, 0x1c, 0xe4, 0x23, 0x52, 0x18, 0xf8, 0x1b, 0x12, 0x04, 0xf8,
0x03, 0x96, 0x03, 0x52, 0x28, 0xe0, 0x1c, 0xe6, 0x0a, 0xa6, 0x1a, 0xe4,
0x63, 0x96, 0x63, 0x52, 0x20, 0xe0, 0x73, 0x52, 0x10, 0xe0, 0x03, 0x52,
0x14, 0xe0, 0x13, 0x52, 0x18, 0xe0, 0x98, 0x52, 0x74, 0xef, 0x09, 0x12,
0x8c, 0xe0, 0x0b, 0xa1, 0x01, 0x81, 0x01, 0x52, 0x90, 0xe0, 0x65, 0x82,
0x05, 0x12, 0x30, 0xf8, 0x09, 0x00, 0xa8, 0xe0, 0x0a, 0x00, 0x0c, 0xf8,
0x16, 0x00, 0x00, 0xc0, 0x01, 0x52, 0x90, 0xc0, 0x46, 0x41, 0x84, 0xe0,
0x0a, 0x80, 0x0a, 0x4e, 0x9c, 0xe9, 0x1a, 0x00, 0x08, 0xe0, 0x38, 0x01,
0x01, 0x20, 0x00, 0xc0, 0x0b, 0x12, 0x1c, 0xe0, 0x1b, 0x12, 0x24, 0xe0,
0x2b, 0x12, 0x28, 0xe0, 0x03, 0x52, 0x2c, 0xe0, 0x0b, 0x12, 0x20, 0xe0,
0x13, 0x52, 0x34, 0xe0, 0x23, 0x52, 0x38, 0xe0, 0x03, 0x52, 0x30, 0xe0,
0x0c, 0x00, 0x00, 0xe2, 0xf1, 0x98, 0x0c, 0x0c, 0x7c, 0xf2, 0x93, 0xdd,
0x13, 0xa9, 0x00, 0x00, 0xa8, 0xc1, 0x40, 0x00, 0x68, 0x04, 0xa0, 0xe0,
0x40, 0x6c, 0x40, 0x00, 0xe8, 0x34, 0xc8, 0xe0, 0xfc, 0x91, 0x40, 0x00,
0x68, 0x1f, 0xb8, 0xe0, 0x30, 0x16, 0x41, 0x00, 0x28, 0x39, 0x74, 0xe0,
0xb0, 0x7e, 0x40, 0x00, 0xe8, 0x38, 0xc0, 0xe0, 0x30, 0x04, 0x41, 0x00,
0x48, 0x1b, 0x80, 0xe0, 0x30, 0x2e, 0x40, 0x00, 0x88, 0x0c, 0xec, 0xe0,
0x10, 0x9f, 0x40, 0x00, 0x88, 0x08, 0xb4, 0xe0, 0x10, 0x01, 0x41, 0x00,
0x68, 0x01, 0x84, 0xe0, 0x54, 0xd6, 0x40, 0x00, 0xc8, 0x1a, 0x98, 0xe0,
0xd0, 0xc8, 0x40, 0x00, 0x68, 0x08, 0xa0, 0xe0, 0x80, 0xdb, 0x40, 0x00,
0xe8, 0x35, 0x94, 0xe0, 0x74, 0xff, 0x40, 0x00, 0xa8, 0x11, 0x80, 0xe0,
0xf8, 0x89, 0x40, 0x00, 0x88, 0x16, 0xbc, 0xe0, 0x00, 0x90, 0x40, 0x00,
0x08, 0x35, 0xb8, 0xe0, 0x7c, 0x73, 0x40, 0x00, 0x88, 0x1b, 0xc8, 0xe0,
0xf4, 0xff, 0x40, 0x00, 0x68, 0x39, 0x80, 0xe0, 0xa4, 0xa4, 0x40, 0x00,
0xa8, 0x16, 0xb0, 0xe0, 0x50, 0xc9, 0x40, 0x00, 0x28, 0x3a, 0x98, 0xe0,
0x00, 0xb9, 0x00, 0x00, 0xb6, 0x85, 0x00, 0x00,
};
static const char * const vd55g1_tp_menu[] = {
"Disabled",
"Diagonal Grey Scale",
"Pseudo-random Noise",
};
static const s64 vd55g1_ev_bias_menu[] = {
-3000, -2500, -2000, -1500, -1000, -500,
0,
500, 1000, 1500, 2000, 2500, 3000,
};
static const char * const vd55g1_hdr_menu[] = {
"No HDR",
/*
* This mode acquires 2 frames on the sensor, the first one is ditched
* out and only used for auto exposure data, the second one is output to
* the host
*/
"Internal subtraction",
};
static const char * const vd55g1_supply_name[] = {
"vcore",
"vddio",
"vana",
};
enum vd55g1_hdr_mode {
VD55G1_NO_HDR,
VD55G1_HDR_SUB,
};
struct vd55g1_mode {
u32 width;
u32 height;
};
struct vd55g1_fmt_desc {
u32 code;
u8 bpp;
u8 data_type;
};
static const struct vd55g1_fmt_desc vd55g1_mbus_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,
},
};
static const struct vd55g1_mode vd55g1_supported_modes[] = {
{
.width = VD55G1_WIDTH,
.height = VD55G1_HEIGHT,
},
{
.width = 800,
.height = VD55G1_HEIGHT,
},
{
.width = 800,
.height = 600,
},
{
.width = 640,
.height = 480,
},
{
.width = 320,
.height = 240,
},
};
enum vd55g1_expo_state {
VD55G1_EXP_AUTO,
VD55G1_EXP_FREEZE,
VD55G1_EXP_MANUAL,
VD55G1_EXP_SINGLE_STEP,
VD55G1_EXP_BYPASS,
};
struct vd55g1_vblank_limits {
u16 min;
u16 def;
u16 max;
};
struct vd55g1 {
struct device *dev;
struct v4l2_subdev sd;
struct media_pad pad;
struct regulator_bulk_data supplies[ARRAY_SIZE(vd55g1_supply_name)];
struct gpio_desc *reset_gpio;
struct clk *xclk;
struct regmap *regmap;
u32 xclk_freq;
u16 oif_ctrl;
u8 gpios[VD55G1_NB_GPIOS];
unsigned long ext_leds_mask;
u32 mipi_rate;
u32 pixel_clock;
u64 link_freq;
struct v4l2_ctrl_handler ctrl_handler;
struct v4l2_ctrl *pixel_rate_ctrl;
struct v4l2_ctrl *vblank_ctrl;
struct v4l2_ctrl *hblank_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;
struct v4l2_ctrl *hdr_ctrl;
};
static inline struct vd55g1 *to_vd55g1(struct v4l2_subdev *sd)
{
return container_of_const(sd, struct vd55g1, sd);
}
static inline struct vd55g1 *ctrl_to_vd55g1(struct v4l2_ctrl *ctrl)
{
struct v4l2_subdev *sd = &container_of_const(ctrl->handler,
struct vd55g1,
ctrl_handler)->sd;
return to_vd55g1(sd);
}
static const struct vd55g1_fmt_desc *vd55g1_get_fmt_desc(struct vd55g1 *sensor,
u32 code)
{
unsigned int i;
for (i = 0; i < ARRAY_SIZE(vd55g1_mbus_codes); i++) {
if (vd55g1_mbus_codes[i].code == code)
return &vd55g1_mbus_codes[i];
}
/* Should never happen */
dev_warn(sensor->dev, "Unsupported code %d. default to 8 bpp\n", code);
return &vd55g1_mbus_codes[0];
}
static s32 vd55g1_get_pixel_rate(struct vd55g1 *sensor,
struct v4l2_mbus_framefmt *format)
{
return sensor->mipi_rate /
vd55g1_get_fmt_desc(sensor, format->code)->bpp;
}
static unsigned int vd55g1_get_hblank_min(struct vd55g1 *sensor,
struct v4l2_mbus_framefmt *format,
struct v4l2_rect *crop)
{
u32 mipi_req_line_time;
u32 mipi_req_line_length;
u32 min_line_length;
/* MIPI required time */
mipi_req_line_time = (crop->width *
vd55g1_get_fmt_desc(sensor, format->code)->bpp +
VD55G1_MIPI_MARGIN) /
(sensor->mipi_rate / MEGA);
mipi_req_line_length = mipi_req_line_time * sensor->pixel_clock /
HZ_PER_MHZ;
/* Absolute time required for ADCs to convert pixels */
min_line_length = VD55G1_LINE_LENGTH_MIN;
if (sensor->hdr_ctrl->val == VD55G1_HDR_SUB)
min_line_length = VD55G1_LINE_LENGTH_SUB_MIN;
/* Respect both constraint */
min_line_length = max(min_line_length, mipi_req_line_length);
return min_line_length - crop->width;
}
static void vd55g1_get_vblank_limits(struct vd55g1 *sensor,
struct v4l2_rect *crop,
struct vd55g1_vblank_limits *limits)
{
limits->min = VD55G1_VBLANK_MIN;
limits->def = VD55G1_FRAME_LENGTH_DEF - crop->height;
limits->max = VD55G1_VBLANK_MAX - crop->height;
}
#define vd55g1_read(sensor, reg, val, err) \
cci_read((sensor)->regmap, reg, val, err)
#define vd55g1_write(sensor, reg, val, err) \
cci_write((sensor)->regmap, reg, val, err)
static int vd55g1_write_array(struct vd55g1 *sensor, u32 reg, unsigned int len,
const u8 *array, int *err)
{
unsigned int chunk_sz = 1024;
unsigned int sz;
int ret = 0;
if (err && *err)
return *err;
/*
* This loop isn't necessary but in certains conditions (platforms, cpu
* load, etc.) it has been observed that the bulk write could timeout.
*/
while (len) {
sz = min(len, chunk_sz);
ret = regmap_bulk_write(sensor->regmap, reg, array, sz);
if (ret < 0)
goto out;
len -= sz;
reg += sz;
array += sz;
}
out:
if (ret && err)
*err = ret;
return ret;
}
static int vd55g1_poll_reg(struct vd55g1 *sensor, u32 reg, u8 poll_val,
int *err)
{
unsigned int val = 0;
int ret;
if (err && *err)
return *err;
ret = regmap_read_poll_timeout(sensor->regmap, CCI_REG_ADDR(reg), val,
(val == poll_val), 2000,
500 * USEC_PER_MSEC);
if (ret && err)
*err = ret;
return ret;
}
static int vd55g1_wait_state(struct vd55g1 *sensor, int state, int *err)
{
return vd55g1_poll_reg(sensor, VD55G1_REG_SYSTEM_FSM, state, err);
}
static int vd55g1_prepare_clock_tree(struct vd55g1 *sensor)
{
u32 sys_clk, mipi_div, pixel_div;
if (sensor->xclk_freq < VD55G1_XCLK_FREQ_MIN ||
sensor->xclk_freq > VD55G1_XCLK_FREQ_MAX) {
dev_err(sensor->dev,
"Only %luMhz-%luMhz clock range supported. Provided %lu MHz\n",
VD55G1_XCLK_FREQ_MIN / HZ_PER_MHZ,
VD55G1_XCLK_FREQ_MAX / HZ_PER_MHZ,
sensor->xclk_freq / HZ_PER_MHZ);
return -EINVAL;
}
/* MIPI bus is double data rate */
sensor->mipi_rate = sensor->link_freq * 2;
if (sensor->mipi_rate < VD55G1_MIPI_RATE_MIN ||
sensor->mipi_rate > VD55G1_MIPI_RATE_MAX) {
dev_err(sensor->dev,
"Only %luMbps-%luMbps data rate range supported. Provided %lu Mbps\n",
VD55G1_MIPI_RATE_MIN / MEGA,
VD55G1_MIPI_RATE_MAX / MEGA,
sensor->mipi_rate / MEGA);
return -EINVAL;
}
if (sensor->mipi_rate <= 300 * MEGA)
mipi_div = 4;
else if (sensor->mipi_rate <= 600 * MEGA)
mipi_div = 2;
else
mipi_div = 1;
sys_clk = sensor->mipi_rate * mipi_div;
if (sys_clk <= 780 * HZ_PER_MHZ)
pixel_div = 5;
else if (sys_clk <= 900 * HZ_PER_MHZ)
pixel_div = 6;
else
pixel_div = 8;
sensor->pixel_clock = sys_clk / pixel_div;
return 0;
}
static int vd55g1_update_patgen(struct vd55g1 *sensor, u32 patgen_index)
{
static const u8 index2val[] = {
0x0, 0x22, 0x28
};
u32 pattern = index2val[patgen_index];
u32 reg = pattern << VD55G1_PATGEN_TYPE_SHIFT;
u8 duster = VD55G1_DUSTER_RING_ENABLE | VD55G1_DUSTER_DYN_ENABLE |
VD55G1_DUSTER_ENABLE;
int ret = 0;
BUILD_BUG_ON(ARRAY_SIZE(index2val) != ARRAY_SIZE(vd55g1_tp_menu));
if (pattern != 0) {
reg |= VD55G1_PATGEN_ENABLE;
/* Take care of duster to not mess up the test pattern output */
duster = VD55G1_DUSTER_DISABLE;
}
vd55g1_write(sensor, VD55G1_REG_DUSTER_CTRL, duster, &ret);
vd55g1_write(sensor, VD55G1_REG_PATGEN_CTRL, reg, &ret);
return ret;
}
static int vd55g1_update_expo_cluster(struct vd55g1 *sensor, bool is_auto)
{
enum vd55g1_expo_state expo_state = is_auto ? VD55G1_EXP_AUTO :
VD55G1_EXP_MANUAL;
int ret = 0;
if (sensor->ae_ctrl->is_new)
vd55g1_write(sensor, VD55G1_REG_EXP_MODE(0), expo_state, &ret);
if (sensor->hdr_ctrl->val == VD55G1_HDR_SUB &&
sensor->hdr_ctrl->is_new) {
vd55g1_write(sensor, VD55G1_REG_EXP_MODE(1), VD55G1_EXP_BYPASS,
&ret);
if (ret)
return ret;
}
if (!is_auto && sensor->expo_ctrl->is_new)
vd55g1_write(sensor, VD55G1_REG_MANUAL_COARSE_EXPOSURE,
sensor->expo_ctrl->val, &ret);
if (!is_auto && sensor->again_ctrl->is_new)
vd55g1_write(sensor, VD55G1_REG_MANUAL_ANALOG_GAIN,
sensor->again_ctrl->val, &ret);
if (!is_auto && sensor->dgain_ctrl->is_new)
vd55g1_write(sensor, VD55G1_REG_MANUAL_DIGITAL_GAIN,
sensor->dgain_ctrl->val, &ret);
return ret;
}
static int vd55g1_lock_exposure(struct vd55g1 *sensor, u32 lock_val)
{
bool ae_lock = lock_val & V4L2_LOCK_EXPOSURE;
enum vd55g1_expo_state expo_state = ae_lock ? VD55G1_EXP_FREEZE :
VD55G1_EXP_AUTO;
int ret = 0;
if (sensor->ae_ctrl->val == V4L2_EXPOSURE_AUTO)
vd55g1_write(sensor, VD55G1_REG_EXP_MODE(0), expo_state, &ret);
return ret;
}
static int vd55g1_read_expo_cluster(struct vd55g1 *sensor)
{
u64 exposure = 0;
u64 again = 0;
u64 dgain = 0;
int ret = 0;
vd55g1_read(sensor, VD55G1_REG_APPLIED_COARSE_EXPOSURE, &exposure,
&ret);
vd55g1_read(sensor, VD55G1_REG_APPLIED_ANALOG_GAIN, &again, &ret);
vd55g1_read(sensor, VD55G1_REG_APPLIED_DIGITAL_GAIN, &dgain, &ret);
if (ret)
return ret;
sensor->expo_ctrl->cur.val = exposure;
sensor->again_ctrl->cur.val = again;
sensor->dgain_ctrl->cur.val = dgain;
return 0;
}
static int vd55g1_update_frame_length(struct vd55g1 *sensor,
unsigned int frame_length)
{
int ret = 0;
if (sensor->hdr_ctrl->val == VD55G1_HDR_SUB)
vd55g1_write(sensor, VD55G1_REG_FRAME_LENGTH(1), frame_length,
&ret);
vd55g1_write(sensor, VD55G1_REG_FRAME_LENGTH(0), frame_length, &ret);
return ret;
}
static int vd55g1_update_exposure_target(struct vd55g1 *sensor, int index)
{
/*
* Find auto exposure target with: default target exposure * 2^EV
* Defaut target exposure being 27 for the sensor.
*/
static const unsigned int index2exposure_target[] = {
3, 5, 7, 10, 14, 19, 27, 38, 54, 76, 108, 153, 216,
};
int exposure_target = index2exposure_target[index];
return vd55g1_write(sensor, VD55G1_REG_AE_TARGET_PERCENTAGE,
exposure_target, NULL);
}
static int vd55g1_apply_cold_start(struct vd55g1 *sensor,
struct v4l2_rect *crop)
{
/*
* Cold start register is a single register expressed as exposure time
* in us. This differ from status registers being a combination of
* exposure, digital gain, and analog gain, requiring the following
* format conversion.
*/
unsigned int line_length = crop->width + sensor->hblank_ctrl->val;
unsigned int line_time_us = DIV_ROUND_UP(line_length * MEGA,
sensor->pixel_clock);
u8 d_gain = DIV_ROUND_CLOSEST(sensor->dgain_ctrl->val, 1 << 8);
u8 a_gain = DIV_ROUND_CLOSEST(32, (32 - sensor->again_ctrl->val));
unsigned int expo_us = sensor->expo_ctrl->val * d_gain * a_gain *
line_time_us;
int ret = 0;
vd55g1_write(sensor, VD55G1_REG_AE_FORCE_COLDSTART, 1, &ret);
vd55g1_write(sensor, VD55G1_REG_AE_COLDSTART_EXP_TIME, expo_us, &ret);
return ret;
}
static void vd55g1_update_pad_fmt(struct vd55g1 *sensor,
const struct vd55g1_mode *mode, u32 code,
struct v4l2_mbus_framefmt *fmt)
{
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 vd55g1_update_hdr_mode(struct vd55g1 *sensor)
{
int ret = 0;
switch (sensor->hdr_ctrl->val) {
case VD55G1_NO_HDR:
vd55g1_write(sensor, VD55G1_REG_EXPOSURE_MAX_COARSE,
VD55G1_EXPOSURE_MAX_COARSE_DEF, &ret);
vd55g1_write(sensor, VD55G1_REG_EXPOSURE_USE_CASES, 0, &ret);
vd55g1_write(sensor, VD55G1_REG_NEXT_CTX, 0x0, &ret);
vd55g1_write(sensor, VD55G1_REG_CTX_REPEAT_COUNT_CTX0, 0, &ret);
vd55g1_write(sensor, VD55G1_REG_VT_MODE(0),
VD55G1_VT_MODE_NORMAL, &ret);
vd55g1_write(sensor, VD55G1_REG_MASK_FRAME_CTRL(0),
VD55G1_MASK_FRAME_CTRL_OUTPUT, &ret);
break;
case VD55G1_HDR_SUB:
vd55g1_write(sensor, VD55G1_REG_EXPOSURE_MAX_COARSE,
VD55G1_EXPOSURE_MAX_COARSE_SUB, &ret);
vd55g1_write(sensor, VD55G1_REG_EXPOSURE_USE_CASES,
VD55G1_EXPOSURE_USE_CASES_MULTI_CONTEXT, &ret);
vd55g1_write(sensor, VD55G1_REG_NEXT_CTX, 0x0001, &ret);
vd55g1_write(sensor, VD55G1_REG_CTX_REPEAT_COUNT_CTX0, 1, &ret);
vd55g1_write(sensor, VD55G1_REG_CTX_REPEAT_COUNT_CTX1, 1, &ret);
vd55g1_write(sensor, VD55G1_REG_VT_MODE(0),
VD55G1_VT_MODE_NORMAL, &ret);
vd55g1_write(sensor, VD55G1_REG_MASK_FRAME_CTRL(0),
VD55G1_MASK_FRAME_CTRL_MASK, &ret);
vd55g1_write(sensor, VD55G1_REG_EXPOSURE_INSTANCE(0), 0, &ret);
vd55g1_write(sensor, VD55G1_REG_VT_MODE(1),
VD55G1_VT_MODE_SUBTRACTION, &ret);
vd55g1_write(sensor, VD55G1_REG_MASK_FRAME_CTRL(1),
VD55G1_MASK_FRAME_CTRL_OUTPUT, &ret);
vd55g1_write(sensor, VD55G1_REG_EXPOSURE_INSTANCE(1), 1, &ret);
break;
default:
ret = -EINVAL;
}
return ret;
}
static int vd55g1_set_framefmt(struct vd55g1 *sensor,
struct v4l2_mbus_framefmt *format,
struct v4l2_rect *crop)
{
u8 binning;
int ret = 0;
vd55g1_write(sensor, VD55G1_REG_FORMAT_CTRL,
vd55g1_get_fmt_desc(sensor, format->code)->bpp, &ret);
vd55g1_write(sensor, VD55G1_REG_OIF_IMG_CTRL,
vd55g1_get_fmt_desc(sensor, format->code)->data_type,
&ret);
switch (crop->width / format->width) {
case 1:
default:
binning = VD55G1_READOUT_CTRL_BIN_MODE_NORMAL;
break;
case 2:
binning = VD55G1_READOUT_CTRL_BIN_MODE_DIGITAL_X2;
break;
}
vd55g1_write(sensor, VD55G1_REG_READOUT_CTRL, binning, &ret);
vd55g1_write(sensor, VD55G1_REG_X_START(0), crop->left, &ret);
vd55g1_write(sensor, VD55G1_REG_X_WIDTH(0), crop->width, &ret);
vd55g1_write(sensor, VD55G1_REG_Y_START(0), crop->top, &ret);
vd55g1_write(sensor, VD55G1_REG_Y_HEIGHT(0), crop->height, &ret);
vd55g1_write(sensor, VD55G1_REG_X_START(1), crop->left, &ret);
vd55g1_write(sensor, VD55G1_REG_X_WIDTH(1), crop->width, &ret);
vd55g1_write(sensor, VD55G1_REG_Y_START(1), crop->top, &ret);
vd55g1_write(sensor, VD55G1_REG_Y_HEIGHT(1), crop->height, &ret);
return ret;
}
static int vd55g1_update_gpios(struct vd55g1 *sensor, unsigned long gpio_mask)
{
unsigned long io;
u8 gpio_val;
int ret = 0;
for_each_set_bit(io, &gpio_mask, VD55G1_NB_GPIOS) {
gpio_val = sensor->gpios[io];
if (gpio_val == VD55G1_GPIO_MODE_STROBE &&
sensor->led_ctrl->val == V4L2_FLASH_LED_MODE_NONE) {
gpio_val = VD55G1_GPIO_MODE_IN;
if (sensor->hdr_ctrl->val == VD55G1_HDR_SUB) {
/* Make its context 1 counterpart strobe too */
vd55g1_write(sensor,
VD55G1_REG_GPIO_0_CTRL(1) + io,
gpio_val, &ret);
}
}
ret = vd55g1_write(sensor, VD55G1_REG_GPIO_0_CTRL(0) + io,
gpio_val, &ret);
}
return ret;
}
static int vd55g1_ro_ctrls_setup(struct vd55g1 *sensor, struct v4l2_rect *crop)
{
return vd55g1_write(sensor, VD55G1_REG_LINE_LENGTH,
crop->width + sensor->hblank_ctrl->val, NULL);
}
static void vd55g1_grab_ctrls(struct vd55g1 *sensor, bool enable)
{
/* These settings cannot change during stream */
v4l2_ctrl_grab(sensor->hflip_ctrl, enable);
v4l2_ctrl_grab(sensor->vflip_ctrl, enable);
v4l2_ctrl_grab(sensor->patgen_ctrl, enable);
v4l2_ctrl_grab(sensor->hdr_ctrl, enable);
}
static int vd55g1_enable_streams(struct v4l2_subdev *sd,
struct v4l2_subdev_state *state, u32 pad,
u64 streams_mask)
{
struct vd55g1 *sensor = to_vd55g1(sd);
struct v4l2_rect *crop =
v4l2_subdev_state_get_crop(state, 0);
struct v4l2_mbus_framefmt *format =
v4l2_subdev_state_get_format(state, 0);
int ret;
ret = pm_runtime_resume_and_get(sensor->dev);
if (ret < 0)
return ret;
/* Configure output */
vd55g1_write(sensor, VD55G1_REG_MIPI_DATA_RATE,
sensor->mipi_rate, &ret);
vd55g1_write(sensor, VD55G1_REG_OIF_CTRL, sensor->oif_ctrl, &ret);
vd55g1_write(sensor, VD55G1_REG_ISL_ENABLE, 0, &ret);
if (ret)
goto err_rpm_put;
ret = vd55g1_set_framefmt(sensor, format, crop);
if (ret)
goto err_rpm_put;
/* Setup default GPIO values; could be overridden by V4L2 ctrl setup */
ret = vd55g1_update_gpios(sensor, GENMASK(VD55G1_NB_GPIOS - 1, 0));
if (ret)
goto err_rpm_put;
ret = vd55g1_apply_cold_start(sensor, crop);
if (ret)
goto err_rpm_put;
/* Apply settings from V4L2 ctrls */
ret = __v4l2_ctrl_handler_setup(&sensor->ctrl_handler);
if (ret)
goto err_rpm_put;
/* Also apply settings from read-only V4L2 ctrls */
ret = vd55g1_ro_ctrls_setup(sensor, crop);
if (ret)
goto err_rpm_put;
/* Start streaming */
vd55g1_write(sensor, VD55G1_REG_STBY, VD55G1_STBY_START_STREAM, &ret);
vd55g1_poll_reg(sensor, VD55G1_REG_STBY, 0, &ret);
vd55g1_wait_state(sensor, VD55G1_SYSTEM_FSM_STREAMING, &ret);
if (ret)
goto err_rpm_put;
vd55g1_grab_ctrls(sensor, true);
return 0;
err_rpm_put:
pm_runtime_put(sensor->dev);
return -EINVAL;
}
static int vd55g1_disable_streams(struct v4l2_subdev *sd,
struct v4l2_subdev_state *state, u32 pad,
u64 streams_mask)
{
struct vd55g1 *sensor = to_vd55g1(sd);
int ret = 0;
/* Retrieve Expo cluster to enable coldstart of AE */
ret = vd55g1_read_expo_cluster(sensor);
vd55g1_write(sensor, VD55G1_REG_STREAMING, VD55G1_STREAMING_STOP_STREAM,
&ret);
vd55g1_poll_reg(sensor, VD55G1_REG_STREAMING, 0, &ret);
vd55g1_wait_state(sensor, VD55G1_SYSTEM_FSM_SW_STBY, &ret);
if (ret)
dev_warn(sensor->dev, "Can't disable stream\n");
vd55g1_grab_ctrls(sensor, false);
pm_runtime_put_autosuspend(sensor->dev);
return ret;
}
static int vd55g1_patch(struct vd55g1 *sensor)
{
u64 patch;
int ret = 0;
vd55g1_write_array(sensor, VD55G1_REG_FWPATCH_START_ADDR,
sizeof(patch_array), patch_array, &ret);
vd55g1_write(sensor, VD55G1_REG_BOOT, VD55G1_BOOT_PATCH_SETUP, &ret);
vd55g1_poll_reg(sensor, VD55G1_REG_BOOT, 0, &ret);
if (ret) {
dev_err(sensor->dev, "Failed to apply patch\n");
return ret;
}
vd55g1_read(sensor, VD55G1_REG_FWPATCH_REVISION, &patch, &ret);
if (patch != (VD55G1_FWPATCH_REVISION_MAJOR << 8) +
VD55G1_FWPATCH_REVISION_MINOR) {
dev_err(sensor->dev, "Bad patch version expected %d.%d got %d.%d\n",
VD55G1_FWPATCH_REVISION_MAJOR,
VD55G1_FWPATCH_REVISION_MINOR,
(u8)(patch >> 8), (u8)(patch & 0xff));
return -ENODEV;
}
dev_dbg(sensor->dev, "patch %d.%d applied\n",
(u8)(patch >> 8), (u8)(patch & 0xff));
return 0;
}
static int vd55g1_get_selection(struct v4l2_subdev *sd,
struct v4l2_subdev_state *sd_state,
struct v4l2_subdev_selection *sel)
{
const struct v4l2_rect *crop = v4l2_subdev_state_get_crop(sd_state, 0);
switch (sel->target) {
case V4L2_SEL_TGT_CROP:
sel->r = *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 = VD55G1_WIDTH;
sel->r.height = VD55G1_HEIGHT;
return 0;
}
return -EINVAL;
}
static int vd55g1_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(vd55g1_mbus_codes))
return -EINVAL;
code->code = vd55g1_mbus_codes[code->index].code;
return 0;
}
static int vd55g1_new_format_change_controls(struct vd55g1 *sensor,
struct v4l2_mbus_framefmt *format,
struct v4l2_rect *crop)
{
struct vd55g1_vblank_limits vblank;
unsigned int hblank;
unsigned int frame_length = 0;
unsigned int expo_max;
int ret;
/* Reset vblank and frame length to default */
vd55g1_get_vblank_limits(sensor, crop, &vblank);
ret = __v4l2_ctrl_modify_range(sensor->vblank_ctrl, vblank.min,
vblank.max, 1, vblank.def);
if (ret)
return ret;
/* Max exposure changes with vblank */
frame_length = crop->height + sensor->vblank_ctrl->val;
expo_max = frame_length - VD55G1_EXPO_MAX_TERM;
ret = __v4l2_ctrl_modify_range(sensor->expo_ctrl, 0, expo_max, 1,
VD55G1_EXPO_DEF);
if (ret)
return ret;
/* Update pixel rate to reflect new bpp */
ret = __v4l2_ctrl_s_ctrl_int64(sensor->pixel_rate_ctrl,
vd55g1_get_pixel_rate(sensor, format));
if (ret)
return ret;
/* Update hblank according to new width */
hblank = vd55g1_get_hblank_min(sensor, format, crop);
ret = __v4l2_ctrl_modify_range(sensor->hblank_ctrl, hblank, hblank, 1,
hblank);
return ret;
}
static int vd55g1_set_pad_fmt(struct v4l2_subdev *sd,
struct v4l2_subdev_state *sd_state,
struct v4l2_subdev_format *sd_fmt)
{
struct vd55g1 *sensor = to_vd55g1(sd);
const struct vd55g1_mode *new_mode;
struct v4l2_mbus_framefmt *format;
struct v4l2_rect pad_crop;
unsigned int binning;
new_mode = v4l2_find_nearest_size(vd55g1_supported_modes,
ARRAY_SIZE(vd55g1_supported_modes),
width, height, sd_fmt->format.width,
sd_fmt->format.height);
vd55g1_update_pad_fmt(sensor, new_mode, sd_fmt->format.code,
&sd_fmt->format);
/*
* Use binning to maximize the crop rectangle size, and centre it in the
* sensor.
*/
binning = min(VD55G1_WIDTH / sd_fmt->format.width,
VD55G1_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 = (VD55G1_WIDTH - pad_crop.width) / 2;
pad_crop.top = (VD55G1_HEIGHT - pad_crop.height) / 2;
format = v4l2_subdev_state_get_format(sd_state, sd_fmt->pad);
*format = sd_fmt->format;
*v4l2_subdev_state_get_crop(sd_state, sd_fmt->pad) = pad_crop;
if (sd_fmt->which == V4L2_SUBDEV_FORMAT_ACTIVE)
return vd55g1_new_format_change_controls(sensor,
&sd_fmt->format,
&pad_crop);
return 0;
}
static int vd55g1_init_state(struct v4l2_subdev *sd,
struct v4l2_subdev_state *sd_state)
{
struct vd55g1 *sensor = to_vd55g1(sd);
struct v4l2_subdev_format fmt = { 0 };
struct v4l2_subdev_route routes[] = {
{ .flags = V4L2_SUBDEV_ROUTE_FL_ACTIVE }
};
struct v4l2_subdev_krouting routing = {
.num_routes = ARRAY_SIZE(routes),
.routes = routes,
};
int ret;
/* Needed by v4l2_subdev_s_stream_helper(), even with 1 stream only */
ret = v4l2_subdev_set_routing(sd, sd_state, &routing);
if (ret)
return ret;
vd55g1_update_pad_fmt(sensor, &vd55g1_supported_modes[VD55G1_MODE_DEF],
vd55g1_mbus_codes[VD55G1_MBUS_CODE_DEF].code,
&fmt.format);
return vd55g1_set_pad_fmt(sd, sd_state, &fmt);
}
static int vd55g1_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(vd55g1_supported_modes))
return -EINVAL;
fse->min_width = vd55g1_supported_modes[fse->index].width;
fse->max_width = fse->min_width;
fse->min_height = vd55g1_supported_modes[fse->index].height;
fse->max_height = fse->min_height;
return 0;
}
static const struct v4l2_subdev_internal_ops vd55g1_internal_ops = {
.init_state = vd55g1_init_state,
};
static const struct v4l2_subdev_pad_ops vd55g1_pad_ops = {
.enum_mbus_code = vd55g1_enum_mbus_code,
.get_fmt = v4l2_subdev_get_fmt,
.set_fmt = vd55g1_set_pad_fmt,
.get_selection = vd55g1_get_selection,
.enum_frame_size = vd55g1_enum_frame_size,
.enable_streams = vd55g1_enable_streams,
.disable_streams = vd55g1_disable_streams,
};
static const struct v4l2_subdev_video_ops vd55g1_video_ops = {
.s_stream = v4l2_subdev_s_stream_helper,
};
static const struct v4l2_subdev_ops vd55g1_subdev_ops = {
.video = &vd55g1_video_ops,
.pad = &vd55g1_pad_ops,
};
static int vd55g1_g_volatile_ctrl(struct v4l2_ctrl *ctrl)
{
struct vd55g1 *sensor = ctrl_to_vd55g1(ctrl);
int ret = 0;
/* Interact with HW only when it is powered ON */
if (!pm_runtime_get_if_in_use(sensor->dev))
return 0;
switch (ctrl->id) {
case V4L2_CID_EXPOSURE_AUTO:
ret = vd55g1_read_expo_cluster(sensor);
break;
default:
ret = -EINVAL;
break;
}
pm_runtime_put_autosuspend(sensor->dev);
return ret;
}
static int vd55g1_s_ctrl(struct v4l2_ctrl *ctrl)
{
struct vd55g1 *sensor = ctrl_to_vd55g1(ctrl);
unsigned int frame_length = 0;
unsigned int expo_max;
struct v4l2_subdev_state *state =
v4l2_subdev_get_locked_active_state(&sensor->sd);
struct v4l2_rect *crop =
v4l2_subdev_state_get_crop(state, 0);
struct v4l2_mbus_framefmt *format =
v4l2_subdev_state_get_format(state, 0);
unsigned int hblank = vd55g1_get_hblank_min(sensor, format, crop);
bool is_auto = false;
int ret = 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 - VD55G1_EXPO_MAX_TERM;
ret = __v4l2_ctrl_modify_range(sensor->expo_ctrl, 0, expo_max,
1, VD55G1_EXPO_DEF);
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;
case V4L2_CID_HDR_SENSOR_MODE:
/* Discriminate if the userspace changed the control value */
if (ctrl->val != ctrl->cur.val) {
/* Max horizontal blanking changes with hdr mode */
ret = __v4l2_ctrl_modify_range(sensor->hblank_ctrl,
hblank, hblank, 1,
hblank);
}
break;
default:
break;
}
/* Don't modify hardware if controls modification failed */
if (ret)
return ret;
/* Interact with HW only when it is powered ON */
if (!pm_runtime_get_if_in_use(sensor->dev))
return 0;
switch (ctrl->id) {
case V4L2_CID_HFLIP:
ret = vd55g1_write(sensor, VD55G1_REG_ORIENTATION,
sensor->hflip_ctrl->val |
(sensor->vflip_ctrl->val << 1),
NULL);
break;
case V4L2_CID_TEST_PATTERN:
ret = vd55g1_update_patgen(sensor, ctrl->val);
break;
case V4L2_CID_EXPOSURE_AUTO:
ret = vd55g1_update_expo_cluster(sensor, is_auto);
break;
case V4L2_CID_3A_LOCK:
ret = vd55g1_lock_exposure(sensor, ctrl->val);
break;
case V4L2_CID_AUTO_EXPOSURE_BIAS:
/*
* We use auto exposure target percentage register to control
* exposure bias for more precision.
*/
ret = vd55g1_update_exposure_target(sensor, ctrl->val);
break;
case V4L2_CID_VBLANK:
ret = vd55g1_update_frame_length(sensor, frame_length);
break;
case V4L2_CID_FLASH_LED_MODE:
ret = vd55g1_update_gpios(sensor, sensor->ext_leds_mask);
break;
case V4L2_CID_HDR_SENSOR_MODE:
ret = vd55g1_update_hdr_mode(sensor);
break;
default:
ret = -EINVAL;
break;
}
pm_runtime_put_autosuspend(sensor->dev);
return ret;
}
static const struct v4l2_ctrl_ops vd55g1_ctrl_ops = {
.g_volatile_ctrl = vd55g1_g_volatile_ctrl,
.s_ctrl = vd55g1_s_ctrl,
};
static int vd55g1_init_ctrls(struct vd55g1 *sensor)
{
const struct v4l2_ctrl_ops *ops = &vd55g1_ctrl_ops;
struct v4l2_ctrl_handler *hdl = &sensor->ctrl_handler;
struct v4l2_ctrl *ctrl;
struct v4l2_fwnode_device_properties fwnode_props;
struct vd55g1_vblank_limits vblank;
unsigned int hblank;
struct v4l2_subdev_state *state =
v4l2_subdev_lock_and_get_active_state(&sensor->sd);
struct v4l2_rect *crop =
v4l2_subdev_state_get_crop(state, 0);
struct v4l2_mbus_framefmt *format =
v4l2_subdev_state_get_format(state, 0);
s32 pixel_rate = vd55g1_get_pixel_rate(sensor, format);
int ret;
v4l2_ctrl_handler_init(hdl, 16);
/* Flip cluster */
sensor->hflip_ctrl = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_HFLIP,
0, 1, 1, 0);
sensor->vflip_ctrl = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_VFLIP,
0, 1, 1, 0);
v4l2_ctrl_cluster(2, &sensor->hflip_ctrl);
/* Exposition cluster */
sensor->ae_ctrl = v4l2_ctrl_new_std_menu(hdl, ops,
V4L2_CID_EXPOSURE_AUTO, 1,
~0x3, V4L2_EXPOSURE_AUTO);
sensor->again_ctrl = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_ANALOGUE_GAIN,
0, 0x1c, 1, VD55G1_AGAIN_DEF);
sensor->dgain_ctrl = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_DIGITAL_GAIN,
256, 0xffff, 1,
VD55G1_DGAIN_DEF);
sensor->expo_ctrl = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_EXPOSURE, 0,
VD55G1_FRAME_LENGTH_DEF -
VD55G1_EXPO_MAX_TERM,
1, VD55G1_EXPO_DEF);
v4l2_ctrl_auto_cluster(4, &sensor->ae_ctrl, V4L2_EXPOSURE_MANUAL, true);
sensor->patgen_ctrl =
v4l2_ctrl_new_std_menu_items(hdl, ops, V4L2_CID_TEST_PATTERN,
ARRAY_SIZE(vd55g1_tp_menu) - 1, 0,
0, vd55g1_tp_menu);
ctrl = v4l2_ctrl_new_int_menu(hdl, ops, V4L2_CID_LINK_FREQ,
0, 0, &sensor->link_freq);
if (ctrl)
ctrl->flags |= V4L2_CTRL_FLAG_READ_ONLY;
sensor->pixel_rate_ctrl = v4l2_ctrl_new_std(hdl, ops,
V4L2_CID_PIXEL_RATE, 1,
INT_MAX, 1,
pixel_rate);
if (sensor->pixel_rate_ctrl)
sensor->pixel_rate_ctrl->flags |= V4L2_CTRL_FLAG_READ_ONLY;
sensor->ae_lock_ctrl = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_3A_LOCK,
0, 1, 0, 0);
sensor->ae_bias_ctrl =
v4l2_ctrl_new_int_menu(hdl, ops,
V4L2_CID_AUTO_EXPOSURE_BIAS,
ARRAY_SIZE(vd55g1_ev_bias_menu) - 1,
ARRAY_SIZE(vd55g1_ev_bias_menu) / 2,
vd55g1_ev_bias_menu);
sensor->hdr_ctrl =
v4l2_ctrl_new_std_menu_items(hdl, ops,
V4L2_CID_HDR_SENSOR_MODE,
ARRAY_SIZE(vd55g1_hdr_menu) - 1, 0,
VD55G1_NO_HDR, vd55g1_hdr_menu);
hblank = vd55g1_get_hblank_min(sensor, format, crop);
sensor->hblank_ctrl = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_HBLANK,
hblank, hblank, 1, hblank);
if (sensor->hblank_ctrl)
sensor->hblank_ctrl->flags |= V4L2_CTRL_FLAG_READ_ONLY;
vd55g1_get_vblank_limits(sensor, crop, &vblank);
sensor->vblank_ctrl = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_VBLANK,
vblank.min, vblank.max,
1, vblank.def);
/* Additional controls 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);
}
ret = v4l2_fwnode_device_parse(sensor->dev, &fwnode_props);
if (ret)
goto free_ctrls;
ret = v4l2_ctrl_new_fwnode_properties(hdl, ops, &fwnode_props);
if (ret)
goto free_ctrls;
sensor->sd.ctrl_handler = hdl;
goto unlock_state;
free_ctrls:
v4l2_ctrl_handler_free(hdl);
unlock_state:
v4l2_subdev_unlock_state(state);
return ret;
}
static int vd55g1_detect(struct vd55g1 *sensor)
{
u64 device_rev;
u64 id;
int ret;
ret = vd55g1_read(sensor, VD55G1_REG_MODEL_ID, &id, NULL);
if (ret)
return ret;
if (id != VD55G1_MODEL_ID) {
dev_warn(sensor->dev, "Unsupported sensor id %x\n", (u32)id);
return -ENODEV;
}
ret = vd55g1_read(sensor, VD55G1_REG_REVISION, &device_rev, NULL);
if (ret)
return ret;
if (device_rev != VD55G1_REVISION_CCB) {
dev_err(sensor->dev, "Unsupported sensor revision (0x%x)\n",
(u16)device_rev);
return -ENODEV;
}
return 0;
}
static int vd55g1_power_on(struct device *dev)
{
struct v4l2_subdev *sd = dev_get_drvdata(dev);
struct vd55g1 *sensor = to_vd55g1(sd);
int ret;
ret = regulator_bulk_enable(ARRAY_SIZE(vd55g1_supply_name),
sensor->supplies);
if (ret) {
dev_err(dev, "Failed to enable regulators %d\n", ret);
return ret;
}
ret = clk_prepare_enable(sensor->xclk);
if (ret) {
dev_err(dev, "Failed to enable clock %d\n", ret);
goto disable_bulk;
}
gpiod_set_value_cansleep(sensor->reset_gpio, 0);
usleep_range(5000, 10000);
ret = vd55g1_wait_state(sensor, VD55G1_SYSTEM_FSM_READY_TO_BOOT, NULL);
if (ret) {
dev_err(dev, "Sensor reset failed %d\n", ret);
goto disable_clock;
}
ret = vd55g1_detect(sensor);
if (ret) {
dev_err(dev, "Sensor detect failed %d\n", ret);
goto disable_clock;
}
/* Setup clock now to advance through system FSM states */
vd55g1_write(sensor, VD55G1_REG_EXT_CLOCK, sensor->xclk_freq, &ret);
ret = vd55g1_patch(sensor);
if (ret) {
dev_err(dev, "Sensor patch failed %d\n", ret);
goto disable_clock;
}
ret = vd55g1_wait_state(sensor, VD55G1_SYSTEM_FSM_SW_STBY, NULL);
if (ret) {
dev_err(dev, "Sensor waiting after patch failed %d\n",
ret);
goto disable_clock;
}
return 0;
disable_clock:
gpiod_set_value_cansleep(sensor->reset_gpio, 1);
clk_disable_unprepare(sensor->xclk);
disable_bulk:
regulator_bulk_disable(ARRAY_SIZE(vd55g1_supply_name),
sensor->supplies);
return ret;
}
static int vd55g1_power_off(struct device *dev)
{
struct v4l2_subdev *sd = dev_get_drvdata(dev);
struct vd55g1 *sensor = to_vd55g1(sd);
gpiod_set_value_cansleep(sensor->reset_gpio, 1);
clk_disable_unprepare(sensor->xclk);
regulator_bulk_disable(ARRAY_SIZE(sensor->supplies), sensor->supplies);
return 0;
}
static int vd55g1_check_csi_conf(struct vd55g1 *sensor,
struct fwnode_handle *endpoint)
{
struct v4l2_fwnode_endpoint ep = { .bus_type = V4L2_MBUS_CSI2_DPHY };
u8 n_lanes;
int ret;
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) {
dev_err(sensor->dev, "Sensor only supports 1 lane, found %d\n",
n_lanes);
ret = -EINVAL;
goto done;
}
/* Clock lane must be first */
if (ep.bus.mipi_csi2.clock_lane != 0) {
dev_err(sensor->dev, "Clock lane must be mapped to lane 0\n");
ret = -EINVAL;
goto done;
}
/* Handle polarities in sensor configuration */
sensor->oif_ctrl = (ep.bus.mipi_csi2.lane_polarities[0] << 3) |
(ep.bus.mipi_csi2.lane_polarities[1] << 6);
/* Check the link frequency set in device tree */
if (!ep.nr_of_link_frequencies) {
dev_err(sensor->dev, "link-frequency property not found in DT\n");
ret = -EINVAL;
goto done;
}
if (ep.nr_of_link_frequencies != 1) {
dev_err(sensor->dev, "Multiple link frequencies not supported\n");
ret = -EINVAL;
goto done;
}
sensor->link_freq = ep.link_frequencies[0];
done:
v4l2_fwnode_endpoint_free(&ep);
return ret;
}
static int vd55g1_parse_dt_gpios_array(struct vd55g1 *sensor,
char *prop_name, u32 *array, int *nb)
{
unsigned int i;
int ret;
*nb = device_property_count_u32(sensor->dev, prop_name);
if (*nb == -EINVAL) {
/* Property not found */
*nb = 0;
return 0;
}
ret = device_property_read_u32_array(sensor->dev,
prop_name, array, *nb);
if (ret) {
dev_err(sensor->dev, "Failed to read %s prop\n", prop_name);
return ret;
}
for (i = 0; i < *nb; i++) {
if (array[i] >= VD55G1_NB_GPIOS) {
dev_err(sensor->dev, "Invalid GPIO number %d\n",
array[i]);
return -EINVAL;
}
}
return 0;
}
static int vd55g1_parse_dt_gpios(struct vd55g1 *sensor)
{
u32 led_gpios[VD55G1_NB_GPIOS];
int nb_gpios_leds;
unsigned int i;
int ret;
/* Initialize GPIOs to default */
for (i = 0; i < VD55G1_NB_GPIOS; i++)
sensor->gpios[i] = VD55G1_GPIO_MODE_IN;
sensor->ext_leds_mask = 0;
/* Take into account optional 'st,leds' output for GPIOs */
ret = vd55g1_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]] = VD55G1_GPIO_MODE_STROBE;
set_bit(led_gpios[i], &sensor->ext_leds_mask);
}
return 0;
}
static int vd55g1_parse_dt(struct vd55g1 *sensor)
{
struct fwnode_handle *endpoint;
int ret;
endpoint = fwnode_graph_get_endpoint_by_id(dev_fwnode(sensor->dev),
0, 0, 0);
if (!endpoint) {
dev_err(sensor->dev, "Endpoint node not found\n");
return -EINVAL;
}
ret = vd55g1_check_csi_conf(sensor, endpoint);
fwnode_handle_put(endpoint);
if (ret)
return ret;
return vd55g1_parse_dt_gpios(sensor);
}
static int vd55g1_subdev_init(struct vd55g1 *sensor)
{
int ret;
/* Init sub device */
sensor->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
sensor->sd.internal_ops = &vd55g1_internal_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(sensor->dev, "Failed to init media entity: %d\n", ret);
return ret;
}
sensor->sd.state_lock = sensor->ctrl_handler.lock;
ret = v4l2_subdev_init_finalize(&sensor->sd);
if (ret) {
dev_err(sensor->dev, "Subdev init error: %d\n", ret);
goto err_ctrls;
}
/*
* Initialize controls after v4l2_subdev_init_finalize() to make sure
* active state is set
*/
ret = vd55g1_init_ctrls(sensor);
if (ret) {
dev_err(sensor->dev, "Controls initialization failed %d\n",
ret);
goto err_media;
}
return 0;
err_ctrls:
v4l2_ctrl_handler_free(sensor->sd.ctrl_handler);
err_media:
media_entity_cleanup(&sensor->sd.entity);
return ret;
}
static void vd55g1_subdev_cleanup(struct vd55g1 *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 vd55g1_get_regulators(struct vd55g1 *sensor)
{
unsigned int i;
for (i = 0; i < ARRAY_SIZE(vd55g1_supply_name); i++)
sensor->supplies[i].supply = vd55g1_supply_name[i];
return devm_regulator_bulk_get(sensor->dev,
ARRAY_SIZE(vd55g1_supply_name),
sensor->supplies);
}
static int vd55g1_probe(struct i2c_client *client)
{
struct device *dev = &client->dev;
struct vd55g1 *sensor;
int ret;
sensor = devm_kzalloc(dev, sizeof(*sensor), GFP_KERNEL);
if (!sensor)
return -ENOMEM;
sensor->dev = &client->dev;
v4l2_i2c_subdev_init(&sensor->sd, client, &vd55g1_subdev_ops);
ret = vd55g1_parse_dt(sensor);
if (ret)
return dev_err_probe(dev, ret, "Failed to parse Device Tree\n");
/* Get (and check) resources : power regs, ext clock, reset gpio */
ret = vd55g1_get_regulators(sensor);
if (ret)
return dev_err_probe(dev, ret, "Failed to get regulators\n");
sensor->xclk = devm_v4l2_sensor_clk_get(dev, NULL);
if (IS_ERR(sensor->xclk))
return dev_err_probe(dev, PTR_ERR(sensor->xclk),
"Failed to get xclk\n");
sensor->xclk_freq = clk_get_rate(sensor->xclk);
ret = vd55g1_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\n");
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\n");
/* Detect if sensor is present and if its revision is supported */
ret = vd55g1_power_on(dev);
if (ret)
return ret;
/* Enable pm_runtime and power off the sensor */
pm_runtime_set_active(dev);
pm_runtime_get_noresume(dev);
pm_runtime_enable(dev);
pm_runtime_set_autosuspend_delay(dev, 4000);
pm_runtime_use_autosuspend(dev);
pm_runtime_put_autosuspend(dev);
ret = vd55g1_subdev_init(sensor);
if (ret) {
dev_err(dev, "V4l2 init failed: %d\n", ret);
goto err_power_off;
}
ret = v4l2_async_register_subdev(&sensor->sd);
if (ret) {
dev_err(dev, "async subdev register failed %d\n", ret);
goto err_subdev;
}
return 0;
err_subdev:
vd55g1_subdev_cleanup(sensor);
err_power_off:
pm_runtime_disable(dev);
pm_runtime_put_noidle(dev);
pm_runtime_dont_use_autosuspend(dev);
vd55g1_power_off(dev);
return ret;
}
static void vd55g1_remove(struct i2c_client *client)
{
struct v4l2_subdev *sd = i2c_get_clientdata(client);
struct vd55g1 *sensor = to_vd55g1(sd);
vd55g1_subdev_cleanup(sensor);
pm_runtime_disable(&client->dev);
if (!pm_runtime_status_suspended(&client->dev))
vd55g1_power_off(&client->dev);
pm_runtime_set_suspended(&client->dev);
pm_runtime_dont_use_autosuspend(&client->dev);
}
static const struct of_device_id vd55g1_dt_ids[] = {
{ .compatible = "st,vd55g1" },
{ /* sentinel */ }
};
MODULE_DEVICE_TABLE(of, vd55g1_dt_ids);
static const struct dev_pm_ops vd55g1_pm_ops = {
SET_RUNTIME_PM_OPS(vd55g1_power_off, vd55g1_power_on, NULL)
};
static struct i2c_driver vd55g1_i2c_driver = {
.driver = {
.name = "vd55g1",
.of_match_table = vd55g1_dt_ids,
.pm = &vd55g1_pm_ops,
},
.probe = vd55g1_probe,
.remove = vd55g1_remove,
};
module_i2c_driver(vd55g1_i2c_driver);
MODULE_AUTHOR("Benjamin Mugnier <benjamin.mugnier@foss.st.com>");
MODULE_AUTHOR("Sylvain Petinot <sylvain.petinot@foss.st.com>");
MODULE_DESCRIPTION("VD55G1 camera subdev driver");
MODULE_LICENSE("GPL");
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