Author | Tokens | Token Proportion | Commits | Commit Proportion |
---|---|---|---|---|
Gerald Loacker | 6114 | 99.45% | 1 | 20.00% |
Laurent Pinchart | 31 | 0.50% | 1 | 20.00% |
Uwe Kleine-König | 1 | 0.02% | 1 | 20.00% |
Rob Herring | 1 | 0.02% | 1 | 20.00% |
Umang Jain | 1 | 0.02% | 1 | 20.00% |
Total | 6148 | 5 |
// SPDX-License-Identifier: GPL-2.0-only /* * Driver for the Sony IMX415 CMOS Image Sensor. * * Copyright (C) 2023 WolfVision GmbH. */ #include <linux/clk.h> #include <linux/gpio/consumer.h> #include <linux/i2c.h> #include <linux/module.h> #include <linux/of.h> #include <linux/pm_runtime.h> #include <linux/regmap.h> #include <linux/regulator/consumer.h> #include <linux/slab.h> #include <linux/videodev2.h> #include <media/v4l2-ctrls.h> #include <media/v4l2-fwnode.h> #include <media/v4l2-subdev.h> #define IMX415_PIXEL_ARRAY_TOP 0 #define IMX415_PIXEL_ARRAY_LEFT 0 #define IMX415_PIXEL_ARRAY_WIDTH 3864 #define IMX415_PIXEL_ARRAY_HEIGHT 2192 #define IMX415_PIXEL_ARRAY_VBLANK 58 #define IMX415_NUM_CLK_PARAM_REGS 11 #define IMX415_REG_8BIT(n) ((1 << 16) | (n)) #define IMX415_REG_16BIT(n) ((2 << 16) | (n)) #define IMX415_REG_24BIT(n) ((3 << 16) | (n)) #define IMX415_REG_SIZE_SHIFT 16 #define IMX415_REG_ADDR_MASK 0xffff #define IMX415_MODE IMX415_REG_8BIT(0x3000) #define IMX415_MODE_OPERATING (0) #define IMX415_MODE_STANDBY BIT(0) #define IMX415_REGHOLD IMX415_REG_8BIT(0x3001) #define IMX415_REGHOLD_INVALID (0) #define IMX415_REGHOLD_VALID BIT(0) #define IMX415_XMSTA IMX415_REG_8BIT(0x3002) #define IMX415_XMSTA_START (0) #define IMX415_XMSTA_STOP BIT(0) #define IMX415_BCWAIT_TIME IMX415_REG_16BIT(0x3008) #define IMX415_CPWAIT_TIME IMX415_REG_16BIT(0x300A) #define IMX415_WINMODE IMX415_REG_8BIT(0x301C) #define IMX415_ADDMODE IMX415_REG_8BIT(0x3022) #define IMX415_REVERSE IMX415_REG_8BIT(0x3030) #define IMX415_HREVERSE_SHIFT (0) #define IMX415_VREVERSE_SHIFT BIT(0) #define IMX415_ADBIT IMX415_REG_8BIT(0x3031) #define IMX415_MDBIT IMX415_REG_8BIT(0x3032) #define IMX415_SYS_MODE IMX415_REG_8BIT(0x3033) #define IMX415_OUTSEL IMX415_REG_8BIT(0x30C0) #define IMX415_DRV IMX415_REG_8BIT(0x30C1) #define IMX415_VMAX IMX415_REG_24BIT(0x3024) #define IMX415_HMAX IMX415_REG_16BIT(0x3028) #define IMX415_SHR0 IMX415_REG_24BIT(0x3050) #define IMX415_GAIN_PCG_0 IMX415_REG_16BIT(0x3090) #define IMX415_AGAIN_MIN 0 #define IMX415_AGAIN_MAX 100 #define IMX415_AGAIN_STEP 1 #define IMX415_BLKLEVEL IMX415_REG_16BIT(0x30E2) #define IMX415_BLKLEVEL_DEFAULT 50 #define IMX415_TPG_EN_DUOUT IMX415_REG_8BIT(0x30E4) #define IMX415_TPG_PATSEL_DUOUT IMX415_REG_8BIT(0x30E6) #define IMX415_TPG_COLORWIDTH IMX415_REG_8BIT(0x30E8) #define IMX415_TESTCLKEN_MIPI IMX415_REG_8BIT(0x3110) #define IMX415_INCKSEL1 IMX415_REG_8BIT(0x3115) #define IMX415_INCKSEL2 IMX415_REG_8BIT(0x3116) #define IMX415_INCKSEL3 IMX415_REG_16BIT(0x3118) #define IMX415_INCKSEL4 IMX415_REG_16BIT(0x311A) #define IMX415_INCKSEL5 IMX415_REG_8BIT(0x311E) #define IMX415_DIG_CLP_MODE IMX415_REG_8BIT(0x32C8) #define IMX415_WRJ_OPEN IMX415_REG_8BIT(0x3390) #define IMX415_SENSOR_INFO IMX415_REG_16BIT(0x3F12) #define IMX415_SENSOR_INFO_MASK 0xFFF #define IMX415_CHIP_ID 0x514 #define IMX415_LANEMODE IMX415_REG_16BIT(0x4001) #define IMX415_LANEMODE_2 1 #define IMX415_LANEMODE_4 3 #define IMX415_TXCLKESC_FREQ IMX415_REG_16BIT(0x4004) #define IMX415_INCKSEL6 IMX415_REG_8BIT(0x400C) #define IMX415_TCLKPOST IMX415_REG_16BIT(0x4018) #define IMX415_TCLKPREPARE IMX415_REG_16BIT(0x401A) #define IMX415_TCLKTRAIL IMX415_REG_16BIT(0x401C) #define IMX415_TCLKZERO IMX415_REG_16BIT(0x401E) #define IMX415_THSPREPARE IMX415_REG_16BIT(0x4020) #define IMX415_THSZERO IMX415_REG_16BIT(0x4022) #define IMX415_THSTRAIL IMX415_REG_16BIT(0x4024) #define IMX415_THSEXIT IMX415_REG_16BIT(0x4026) #define IMX415_TLPX IMX415_REG_16BIT(0x4028) #define IMX415_INCKSEL7 IMX415_REG_8BIT(0x4074) struct imx415_reg { u32 address; u32 val; }; static const char *const imx415_supply_names[] = { "dvdd", "ovdd", "avdd", }; /* * The IMX415 data sheet uses lane rates but v4l2 uses link frequency to * describe MIPI CSI-2 speed. This driver uses lane rates wherever possible * and converts them to link frequencies by a factor of two when needed. */ static const s64 link_freq_menu_items[] = { 594000000 / 2, 720000000 / 2, 891000000 / 2, 1440000000 / 2, 1485000000 / 2, }; struct imx415_clk_params { u64 lane_rate; u64 inck; struct imx415_reg regs[IMX415_NUM_CLK_PARAM_REGS]; }; /* INCK Settings - includes all lane rate and INCK dependent registers */ static const struct imx415_clk_params imx415_clk_params[] = { { .lane_rate = 594000000, .inck = 27000000, .regs[0] = { IMX415_BCWAIT_TIME, 0x05D }, .regs[1] = { IMX415_CPWAIT_TIME, 0x042 }, .regs[2] = { IMX415_SYS_MODE, 0x7 }, .regs[3] = { IMX415_INCKSEL1, 0x00 }, .regs[4] = { IMX415_INCKSEL2, 0x23 }, .regs[5] = { IMX415_INCKSEL3, 0x084 }, .regs[6] = { IMX415_INCKSEL4, 0x0E7 }, .regs[7] = { IMX415_INCKSEL5, 0x23 }, .regs[8] = { IMX415_INCKSEL6, 0x0 }, .regs[9] = { IMX415_INCKSEL7, 0x1 }, .regs[10] = { IMX415_TXCLKESC_FREQ, 0x06C0 }, }, { .lane_rate = 720000000, .inck = 24000000, .regs[0] = { IMX415_BCWAIT_TIME, 0x054 }, .regs[1] = { IMX415_CPWAIT_TIME, 0x03B }, .regs[2] = { IMX415_SYS_MODE, 0x9 }, .regs[3] = { IMX415_INCKSEL1, 0x00 }, .regs[4] = { IMX415_INCKSEL2, 0x23 }, .regs[5] = { IMX415_INCKSEL3, 0x0B4 }, .regs[6] = { IMX415_INCKSEL4, 0x0FC }, .regs[7] = { IMX415_INCKSEL5, 0x23 }, .regs[8] = { IMX415_INCKSEL6, 0x0 }, .regs[9] = { IMX415_INCKSEL7, 0x1 }, .regs[10] = { IMX415_TXCLKESC_FREQ, 0x0600 }, }, { .lane_rate = 891000000, .inck = 27000000, .regs[0] = { IMX415_BCWAIT_TIME, 0x05D }, .regs[1] = { IMX415_CPWAIT_TIME, 0x042 }, .regs[2] = { IMX415_SYS_MODE, 0x5 }, .regs[3] = { IMX415_INCKSEL1, 0x00 }, .regs[4] = { IMX415_INCKSEL2, 0x23 }, .regs[5] = { IMX415_INCKSEL3, 0x0C6 }, .regs[6] = { IMX415_INCKSEL4, 0x0E7 }, .regs[7] = { IMX415_INCKSEL5, 0x23 }, .regs[8] = { IMX415_INCKSEL6, 0x0 }, .regs[9] = { IMX415_INCKSEL7, 0x1 }, .regs[10] = { IMX415_TXCLKESC_FREQ, 0x06C0 }, }, { .lane_rate = 1440000000, .inck = 24000000, .regs[0] = { IMX415_BCWAIT_TIME, 0x054 }, .regs[1] = { IMX415_CPWAIT_TIME, 0x03B }, .regs[2] = { IMX415_SYS_MODE, 0x8 }, .regs[3] = { IMX415_INCKSEL1, 0x00 }, .regs[4] = { IMX415_INCKSEL2, 0x23 }, .regs[5] = { IMX415_INCKSEL3, 0x0B4 }, .regs[6] = { IMX415_INCKSEL4, 0x0FC }, .regs[7] = { IMX415_INCKSEL5, 0x23 }, .regs[8] = { IMX415_INCKSEL6, 0x1 }, .regs[9] = { IMX415_INCKSEL7, 0x0 }, .regs[10] = { IMX415_TXCLKESC_FREQ, 0x0600 }, }, { .lane_rate = 1485000000, .inck = 27000000, .regs[0] = { IMX415_BCWAIT_TIME, 0x05D }, .regs[1] = { IMX415_CPWAIT_TIME, 0x042 }, .regs[2] = { IMX415_SYS_MODE, 0x8 }, .regs[3] = { IMX415_INCKSEL1, 0x00 }, .regs[4] = { IMX415_INCKSEL2, 0x23 }, .regs[5] = { IMX415_INCKSEL3, 0x0A5 }, .regs[6] = { IMX415_INCKSEL4, 0x0E7 }, .regs[7] = { IMX415_INCKSEL5, 0x23 }, .regs[8] = { IMX415_INCKSEL6, 0x1 }, .regs[9] = { IMX415_INCKSEL7, 0x0 }, .regs[10] = { IMX415_TXCLKESC_FREQ, 0x06C0 }, }, }; /* all-pixel 2-lane 720 Mbps 15.74 Hz mode */ static const struct imx415_reg imx415_mode_2_720[] = { { IMX415_VMAX, 0x08CA }, { IMX415_HMAX, 0x07F0 }, { IMX415_LANEMODE, IMX415_LANEMODE_2 }, { IMX415_TCLKPOST, 0x006F }, { IMX415_TCLKPREPARE, 0x002F }, { IMX415_TCLKTRAIL, 0x002F }, { IMX415_TCLKZERO, 0x00BF }, { IMX415_THSPREPARE, 0x002F }, { IMX415_THSZERO, 0x0057 }, { IMX415_THSTRAIL, 0x002F }, { IMX415_THSEXIT, 0x004F }, { IMX415_TLPX, 0x0027 }, }; /* all-pixel 2-lane 1440 Mbps 30.01 Hz mode */ static const struct imx415_reg imx415_mode_2_1440[] = { { IMX415_VMAX, 0x08CA }, { IMX415_HMAX, 0x042A }, { IMX415_LANEMODE, IMX415_LANEMODE_2 }, { IMX415_TCLKPOST, 0x009F }, { IMX415_TCLKPREPARE, 0x0057 }, { IMX415_TCLKTRAIL, 0x0057 }, { IMX415_TCLKZERO, 0x0187 }, { IMX415_THSPREPARE, 0x005F }, { IMX415_THSZERO, 0x00A7 }, { IMX415_THSTRAIL, 0x005F }, { IMX415_THSEXIT, 0x0097 }, { IMX415_TLPX, 0x004F }, }; /* all-pixel 4-lane 891 Mbps 30 Hz mode */ static const struct imx415_reg imx415_mode_4_891[] = { { IMX415_VMAX, 0x08CA }, { IMX415_HMAX, 0x044C }, { IMX415_LANEMODE, IMX415_LANEMODE_4 }, { IMX415_TCLKPOST, 0x007F }, { IMX415_TCLKPREPARE, 0x0037 }, { IMX415_TCLKTRAIL, 0x0037 }, { IMX415_TCLKZERO, 0x00F7 }, { IMX415_THSPREPARE, 0x003F }, { IMX415_THSZERO, 0x006F }, { IMX415_THSTRAIL, 0x003F }, { IMX415_THSEXIT, 0x005F }, { IMX415_TLPX, 0x002F }, }; struct imx415_mode_reg_list { u32 num_of_regs; const struct imx415_reg *regs; }; /* * Mode : number of lanes, lane rate and frame rate dependent settings * * pixel_rate and hmax_pix are needed to calculate hblank for the v4l2 ctrl * interface. These values can not be found in the data sheet and should be * treated as virtual values. Use following table when adding new modes. * * lane_rate lanes fps hmax_pix pixel_rate * * 594 2 10.000 4400 99000000 * 891 2 15.000 4400 148500000 * 720 2 15.748 4064 144000000 * 1782 2 30.000 4400 297000000 * 2079 2 30.000 4400 297000000 * 1440 2 30.019 4510 304615385 * * 594 4 20.000 5500 247500000 * 594 4 25.000 4400 247500000 * 720 4 25.000 4400 247500000 * 720 4 30.019 4510 304615385 * 891 4 30.000 4400 297000000 * 1440 4 30.019 4510 304615385 * 1440 4 60.038 4510 609230769 * 1485 4 60.000 4400 594000000 * 1782 4 60.000 4400 594000000 * 2079 4 60.000 4400 594000000 * 2376 4 90.164 4392 891000000 */ struct imx415_mode { u64 lane_rate; u32 lanes; u32 hmax_pix; u64 pixel_rate; struct imx415_mode_reg_list reg_list; }; /* mode configs */ static const struct imx415_mode supported_modes[] = { { .lane_rate = 720000000, .lanes = 2, .hmax_pix = 4064, .pixel_rate = 144000000, .reg_list = { .num_of_regs = ARRAY_SIZE(imx415_mode_2_720), .regs = imx415_mode_2_720, }, }, { .lane_rate = 1440000000, .lanes = 2, .hmax_pix = 4510, .pixel_rate = 304615385, .reg_list = { .num_of_regs = ARRAY_SIZE(imx415_mode_2_1440), .regs = imx415_mode_2_1440, }, }, { .lane_rate = 891000000, .lanes = 4, .hmax_pix = 4400, .pixel_rate = 297000000, .reg_list = { .num_of_regs = ARRAY_SIZE(imx415_mode_4_891), .regs = imx415_mode_4_891, }, }, }; static const struct regmap_config imx415_regmap_config = { .reg_bits = 16, .val_bits = 8, }; static const char *const imx415_test_pattern_menu[] = { "disabled", "solid black", "solid white", "solid dark gray", "solid light gray", "stripes light/dark grey", "stripes dark/light grey", "stripes black/dark grey", "stripes dark grey/black", "stripes black/white", "stripes white/black", "horizontal color bar", "vertical color bar", }; struct imx415 { struct device *dev; struct clk *clk; struct regulator_bulk_data supplies[ARRAY_SIZE(imx415_supply_names)]; struct gpio_desc *reset; struct regmap *regmap; const struct imx415_clk_params *clk_params; struct v4l2_subdev subdev; struct media_pad pad; struct v4l2_ctrl_handler ctrls; struct v4l2_ctrl *vblank; struct v4l2_ctrl *hflip; struct v4l2_ctrl *vflip; unsigned int cur_mode; unsigned int num_data_lanes; }; /* * This table includes fixed register settings and a bunch of undocumented * registers that have to be set to another value than default. */ static const struct imx415_reg imx415_init_table[] = { /* use all-pixel readout mode, no flip */ { IMX415_WINMODE, 0x00 }, { IMX415_ADDMODE, 0x00 }, { IMX415_REVERSE, 0x00 }, /* use RAW 10-bit mode */ { IMX415_ADBIT, 0x00 }, { IMX415_MDBIT, 0x00 }, /* output VSYNC on XVS and low on XHS */ { IMX415_OUTSEL, 0x22 }, { IMX415_DRV, 0x00 }, /* SONY magic registers */ { IMX415_REG_8BIT(0x32D4), 0x21 }, { IMX415_REG_8BIT(0x32EC), 0xA1 }, { IMX415_REG_8BIT(0x3452), 0x7F }, { IMX415_REG_8BIT(0x3453), 0x03 }, { IMX415_REG_8BIT(0x358A), 0x04 }, { IMX415_REG_8BIT(0x35A1), 0x02 }, { IMX415_REG_8BIT(0x36BC), 0x0C }, { IMX415_REG_8BIT(0x36CC), 0x53 }, { IMX415_REG_8BIT(0x36CD), 0x00 }, { IMX415_REG_8BIT(0x36CE), 0x3C }, { IMX415_REG_8BIT(0x36D0), 0x8C }, { IMX415_REG_8BIT(0x36D1), 0x00 }, { IMX415_REG_8BIT(0x36D2), 0x71 }, { IMX415_REG_8BIT(0x36D4), 0x3C }, { IMX415_REG_8BIT(0x36D6), 0x53 }, { IMX415_REG_8BIT(0x36D7), 0x00 }, { IMX415_REG_8BIT(0x36D8), 0x71 }, { IMX415_REG_8BIT(0x36DA), 0x8C }, { IMX415_REG_8BIT(0x36DB), 0x00 }, { IMX415_REG_8BIT(0x3724), 0x02 }, { IMX415_REG_8BIT(0x3726), 0x02 }, { IMX415_REG_8BIT(0x3732), 0x02 }, { IMX415_REG_8BIT(0x3734), 0x03 }, { IMX415_REG_8BIT(0x3736), 0x03 }, { IMX415_REG_8BIT(0x3742), 0x03 }, { IMX415_REG_8BIT(0x3862), 0xE0 }, { IMX415_REG_8BIT(0x38CC), 0x30 }, { IMX415_REG_8BIT(0x38CD), 0x2F }, { IMX415_REG_8BIT(0x395C), 0x0C }, { IMX415_REG_8BIT(0x3A42), 0xD1 }, { IMX415_REG_8BIT(0x3A4C), 0x77 }, { IMX415_REG_8BIT(0x3AE0), 0x02 }, { IMX415_REG_8BIT(0x3AEC), 0x0C }, { IMX415_REG_8BIT(0x3B00), 0x2E }, { IMX415_REG_8BIT(0x3B06), 0x29 }, { IMX415_REG_8BIT(0x3B98), 0x25 }, { IMX415_REG_8BIT(0x3B99), 0x21 }, { IMX415_REG_8BIT(0x3B9B), 0x13 }, { IMX415_REG_8BIT(0x3B9C), 0x13 }, { IMX415_REG_8BIT(0x3B9D), 0x13 }, { IMX415_REG_8BIT(0x3B9E), 0x13 }, { IMX415_REG_8BIT(0x3BA1), 0x00 }, { IMX415_REG_8BIT(0x3BA2), 0x06 }, { IMX415_REG_8BIT(0x3BA3), 0x0B }, { IMX415_REG_8BIT(0x3BA4), 0x10 }, { IMX415_REG_8BIT(0x3BA5), 0x14 }, { IMX415_REG_8BIT(0x3BA6), 0x18 }, { IMX415_REG_8BIT(0x3BA7), 0x1A }, { IMX415_REG_8BIT(0x3BA8), 0x1A }, { IMX415_REG_8BIT(0x3BA9), 0x1A }, { IMX415_REG_8BIT(0x3BAC), 0xED }, { IMX415_REG_8BIT(0x3BAD), 0x01 }, { IMX415_REG_8BIT(0x3BAE), 0xF6 }, { IMX415_REG_8BIT(0x3BAF), 0x02 }, { IMX415_REG_8BIT(0x3BB0), 0xA2 }, { IMX415_REG_8BIT(0x3BB1), 0x03 }, { IMX415_REG_8BIT(0x3BB2), 0xE0 }, { IMX415_REG_8BIT(0x3BB3), 0x03 }, { IMX415_REG_8BIT(0x3BB4), 0xE0 }, { IMX415_REG_8BIT(0x3BB5), 0x03 }, { IMX415_REG_8BIT(0x3BB6), 0xE0 }, { IMX415_REG_8BIT(0x3BB7), 0x03 }, { IMX415_REG_8BIT(0x3BB8), 0xE0 }, { IMX415_REG_8BIT(0x3BBA), 0xE0 }, { IMX415_REG_8BIT(0x3BBC), 0xDA }, { IMX415_REG_8BIT(0x3BBE), 0x88 }, { IMX415_REG_8BIT(0x3BC0), 0x44 }, { IMX415_REG_8BIT(0x3BC2), 0x7B }, { IMX415_REG_8BIT(0x3BC4), 0xA2 }, { IMX415_REG_8BIT(0x3BC8), 0xBD }, { IMX415_REG_8BIT(0x3BCA), 0xBD }, }; static inline struct imx415 *to_imx415(struct v4l2_subdev *sd) { return container_of(sd, struct imx415, subdev); } static int imx415_read(struct imx415 *sensor, u32 addr) { u8 data[3] = { 0 }; int ret; ret = regmap_raw_read(sensor->regmap, addr & IMX415_REG_ADDR_MASK, data, (addr >> IMX415_REG_SIZE_SHIFT) & 3); if (ret < 0) return ret; return (data[2] << 16) | (data[1] << 8) | data[0]; } static int imx415_write(struct imx415 *sensor, u32 addr, u32 value) { u8 data[3] = { value & 0xff, (value >> 8) & 0xff, value >> 16 }; int ret; ret = regmap_raw_write(sensor->regmap, addr & IMX415_REG_ADDR_MASK, data, (addr >> IMX415_REG_SIZE_SHIFT) & 3); if (ret < 0) dev_err_ratelimited(sensor->dev, "%u-bit write to 0x%04x failed: %d\n", ((addr >> IMX415_REG_SIZE_SHIFT) & 3) * 8, addr & IMX415_REG_ADDR_MASK, ret); return 0; } static int imx415_set_testpattern(struct imx415 *sensor, int val) { int ret; if (val) { ret = imx415_write(sensor, IMX415_BLKLEVEL, 0x00); if (ret) return ret; ret = imx415_write(sensor, IMX415_TPG_EN_DUOUT, 0x01); if (ret) return ret; ret = imx415_write(sensor, IMX415_TPG_PATSEL_DUOUT, val - 1); if (ret) return ret; ret = imx415_write(sensor, IMX415_TPG_COLORWIDTH, 0x01); if (ret) return ret; ret = imx415_write(sensor, IMX415_TESTCLKEN_MIPI, 0x20); if (ret) return ret; ret = imx415_write(sensor, IMX415_DIG_CLP_MODE, 0x00); if (ret) return ret; ret = imx415_write(sensor, IMX415_WRJ_OPEN, 0x00); } else { ret = imx415_write(sensor, IMX415_BLKLEVEL, IMX415_BLKLEVEL_DEFAULT); if (ret) return ret; ret = imx415_write(sensor, IMX415_TPG_EN_DUOUT, 0x00); if (ret) return ret; ret = imx415_write(sensor, IMX415_TESTCLKEN_MIPI, 0x00); if (ret) return ret; ret = imx415_write(sensor, IMX415_DIG_CLP_MODE, 0x01); if (ret) return ret; ret = imx415_write(sensor, IMX415_WRJ_OPEN, 0x01); } return 0; } static int imx415_s_ctrl(struct v4l2_ctrl *ctrl) { struct imx415 *sensor = container_of(ctrl->handler, struct imx415, ctrls); const struct v4l2_mbus_framefmt *format; struct v4l2_subdev_state *state; unsigned int vmax; unsigned int flip; int ret; if (!pm_runtime_get_if_in_use(sensor->dev)) return 0; state = v4l2_subdev_get_locked_active_state(&sensor->subdev); format = v4l2_subdev_get_pad_format(&sensor->subdev, state, 0); switch (ctrl->id) { case V4L2_CID_EXPOSURE: /* clamp the exposure value to VMAX. */ vmax = format->height + sensor->vblank->cur.val; ctrl->val = min_t(int, ctrl->val, vmax); ret = imx415_write(sensor, IMX415_SHR0, vmax - ctrl->val); break; case V4L2_CID_ANALOGUE_GAIN: /* analogue gain in 0.3 dB step size */ ret = imx415_write(sensor, IMX415_GAIN_PCG_0, ctrl->val); break; case V4L2_CID_HFLIP: case V4L2_CID_VFLIP: flip = (sensor->hflip->val << IMX415_HREVERSE_SHIFT) | (sensor->vflip->val << IMX415_VREVERSE_SHIFT); ret = imx415_write(sensor, IMX415_REVERSE, flip); break; case V4L2_CID_TEST_PATTERN: ret = imx415_set_testpattern(sensor, ctrl->val); break; default: ret = -EINVAL; break; } pm_runtime_put(sensor->dev); return ret; } static const struct v4l2_ctrl_ops imx415_ctrl_ops = { .s_ctrl = imx415_s_ctrl, }; static int imx415_ctrls_init(struct imx415 *sensor) { struct v4l2_fwnode_device_properties props; struct v4l2_ctrl *ctrl; u64 pixel_rate = supported_modes[sensor->cur_mode].pixel_rate; u64 lane_rate = supported_modes[sensor->cur_mode].lane_rate; u32 exposure_max = IMX415_PIXEL_ARRAY_HEIGHT + IMX415_PIXEL_ARRAY_VBLANK - 8; u32 hblank; unsigned int i; int ret; ret = v4l2_fwnode_device_parse(sensor->dev, &props); if (ret < 0) return ret; v4l2_ctrl_handler_init(&sensor->ctrls, 10); for (i = 0; i < ARRAY_SIZE(link_freq_menu_items); ++i) { if (lane_rate == link_freq_menu_items[i] * 2) break; } if (i == ARRAY_SIZE(link_freq_menu_items)) { return dev_err_probe(sensor->dev, -EINVAL, "lane rate %llu not supported\n", lane_rate); } ctrl = v4l2_ctrl_new_int_menu(&sensor->ctrls, &imx415_ctrl_ops, V4L2_CID_LINK_FREQ, ARRAY_SIZE(link_freq_menu_items) - 1, i, link_freq_menu_items); if (ctrl) ctrl->flags |= V4L2_CTRL_FLAG_READ_ONLY; v4l2_ctrl_new_std(&sensor->ctrls, &imx415_ctrl_ops, V4L2_CID_EXPOSURE, 4, exposure_max, 1, exposure_max); v4l2_ctrl_new_std(&sensor->ctrls, &imx415_ctrl_ops, V4L2_CID_ANALOGUE_GAIN, IMX415_AGAIN_MIN, IMX415_AGAIN_MAX, IMX415_AGAIN_STEP, IMX415_AGAIN_MIN); hblank = supported_modes[sensor->cur_mode].hmax_pix - IMX415_PIXEL_ARRAY_WIDTH; ctrl = v4l2_ctrl_new_std(&sensor->ctrls, &imx415_ctrl_ops, V4L2_CID_HBLANK, hblank, hblank, 1, hblank); if (ctrl) ctrl->flags |= V4L2_CTRL_FLAG_READ_ONLY; sensor->vblank = v4l2_ctrl_new_std(&sensor->ctrls, &imx415_ctrl_ops, V4L2_CID_VBLANK, IMX415_PIXEL_ARRAY_VBLANK, IMX415_PIXEL_ARRAY_VBLANK, 1, IMX415_PIXEL_ARRAY_VBLANK); if (sensor->vblank) sensor->vblank->flags |= V4L2_CTRL_FLAG_READ_ONLY; /* * The pixel rate used here is a virtual value and can be used for * calculating the frame rate together with hblank. It may not * necessarily be the physically correct pixel clock. */ v4l2_ctrl_new_std(&sensor->ctrls, NULL, V4L2_CID_PIXEL_RATE, pixel_rate, pixel_rate, 1, pixel_rate); sensor->hflip = v4l2_ctrl_new_std(&sensor->ctrls, &imx415_ctrl_ops, V4L2_CID_HFLIP, 0, 1, 1, 0); sensor->vflip = v4l2_ctrl_new_std(&sensor->ctrls, &imx415_ctrl_ops, V4L2_CID_VFLIP, 0, 1, 1, 0); v4l2_ctrl_new_std_menu_items(&sensor->ctrls, &imx415_ctrl_ops, V4L2_CID_TEST_PATTERN, ARRAY_SIZE(imx415_test_pattern_menu) - 1, 0, 0, imx415_test_pattern_menu); v4l2_ctrl_new_fwnode_properties(&sensor->ctrls, &imx415_ctrl_ops, &props); if (sensor->ctrls.error) { dev_err_probe(sensor->dev, sensor->ctrls.error, "failed to add controls\n"); v4l2_ctrl_handler_free(&sensor->ctrls); return sensor->ctrls.error; } sensor->subdev.ctrl_handler = &sensor->ctrls; return 0; } static int imx415_set_mode(struct imx415 *sensor, int mode) { const struct imx415_reg *reg; unsigned int i; int ret = 0; if (mode >= ARRAY_SIZE(supported_modes)) { dev_err(sensor->dev, "Mode %d not supported\n", mode); return -EINVAL; } for (i = 0; i < supported_modes[mode].reg_list.num_of_regs; ++i) { reg = &supported_modes[mode].reg_list.regs[i]; ret = imx415_write(sensor, reg->address, reg->val); if (ret) return ret; } for (i = 0; i < IMX415_NUM_CLK_PARAM_REGS; ++i) { reg = &sensor->clk_params->regs[i]; ret = imx415_write(sensor, reg->address, reg->val); if (ret) return ret; } return 0; } static int imx415_setup(struct imx415 *sensor, struct v4l2_subdev_state *state) { unsigned int i; int ret; for (i = 0; i < ARRAY_SIZE(imx415_init_table); ++i) { ret = imx415_write(sensor, imx415_init_table[i].address, imx415_init_table[i].val); if (ret) return ret; } return imx415_set_mode(sensor, sensor->cur_mode); } static int imx415_wakeup(struct imx415 *sensor) { int ret; ret = imx415_write(sensor, IMX415_MODE, IMX415_MODE_OPERATING); if (ret) return ret; /* * According to the datasheet we have to wait at least 63 us after * leaving standby mode. But this doesn't work even after 30 ms. * So probably this should be 63 ms and therefore we wait for 80 ms. */ msleep(80); return 0; } static int imx415_stream_on(struct imx415 *sensor) { int ret; ret = imx415_wakeup(sensor); if (ret) return ret; return imx415_write(sensor, IMX415_XMSTA, IMX415_XMSTA_START); } static int imx415_stream_off(struct imx415 *sensor) { int ret; ret = imx415_write(sensor, IMX415_XMSTA, IMX415_XMSTA_STOP); if (ret) return ret; return imx415_write(sensor, IMX415_MODE, IMX415_MODE_STANDBY); } static int imx415_s_stream(struct v4l2_subdev *sd, int enable) { struct imx415 *sensor = to_imx415(sd); struct v4l2_subdev_state *state; int ret; state = v4l2_subdev_lock_and_get_active_state(sd); if (!enable) { ret = imx415_stream_off(sensor); pm_runtime_mark_last_busy(sensor->dev); pm_runtime_put_autosuspend(sensor->dev); goto unlock; } ret = pm_runtime_resume_and_get(sensor->dev); if (ret < 0) goto unlock; ret = imx415_setup(sensor, state); if (ret) goto err_pm; ret = __v4l2_ctrl_handler_setup(&sensor->ctrls); if (ret < 0) goto err_pm; ret = imx415_stream_on(sensor); if (ret) goto err_pm; ret = 0; unlock: v4l2_subdev_unlock_state(state); return ret; err_pm: /* * In case of error, turn the power off synchronously as the device * likely has no other chance to recover. */ pm_runtime_put_sync(sensor->dev); goto unlock; } static int imx415_enum_mbus_code(struct v4l2_subdev *sd, struct v4l2_subdev_state *state, struct v4l2_subdev_mbus_code_enum *code) { if (code->index != 0) return -EINVAL; code->code = MEDIA_BUS_FMT_SGBRG10_1X10; return 0; } static int imx415_enum_frame_size(struct v4l2_subdev *sd, struct v4l2_subdev_state *state, struct v4l2_subdev_frame_size_enum *fse) { const struct v4l2_mbus_framefmt *format; format = v4l2_subdev_get_pad_format(sd, state, fse->pad); if (fse->index > 0 || fse->code != format->code) return -EINVAL; fse->min_width = IMX415_PIXEL_ARRAY_WIDTH; fse->max_width = fse->min_width; fse->min_height = IMX415_PIXEL_ARRAY_HEIGHT; fse->max_height = fse->min_height; return 0; } static int imx415_set_format(struct v4l2_subdev *sd, struct v4l2_subdev_state *state, struct v4l2_subdev_format *fmt) { struct v4l2_mbus_framefmt *format; format = v4l2_subdev_get_pad_format(sd, state, fmt->pad); format->width = fmt->format.width; format->height = fmt->format.height; format->code = MEDIA_BUS_FMT_SGBRG10_1X10; format->field = V4L2_FIELD_NONE; format->colorspace = V4L2_COLORSPACE_RAW; format->ycbcr_enc = V4L2_YCBCR_ENC_DEFAULT; format->quantization = V4L2_QUANTIZATION_DEFAULT; format->xfer_func = V4L2_XFER_FUNC_NONE; fmt->format = *format; return 0; } static int imx415_get_selection(struct v4l2_subdev *sd, struct v4l2_subdev_state *sd_state, struct v4l2_subdev_selection *sel) { switch (sel->target) { case V4L2_SEL_TGT_CROP: case V4L2_SEL_TGT_CROP_DEFAULT: case V4L2_SEL_TGT_CROP_BOUNDS: sel->r.top = IMX415_PIXEL_ARRAY_TOP; sel->r.left = IMX415_PIXEL_ARRAY_LEFT; sel->r.width = IMX415_PIXEL_ARRAY_WIDTH; sel->r.height = IMX415_PIXEL_ARRAY_HEIGHT; return 0; } return -EINVAL; } static int imx415_init_cfg(struct v4l2_subdev *sd, struct v4l2_subdev_state *state) { struct v4l2_subdev_format format = { .format = { .width = IMX415_PIXEL_ARRAY_WIDTH, .height = IMX415_PIXEL_ARRAY_HEIGHT, }, }; imx415_set_format(sd, state, &format); return 0; } static const struct v4l2_subdev_video_ops imx415_subdev_video_ops = { .s_stream = imx415_s_stream, }; static const struct v4l2_subdev_pad_ops imx415_subdev_pad_ops = { .enum_mbus_code = imx415_enum_mbus_code, .enum_frame_size = imx415_enum_frame_size, .get_fmt = v4l2_subdev_get_fmt, .set_fmt = imx415_set_format, .get_selection = imx415_get_selection, .init_cfg = imx415_init_cfg, }; static const struct v4l2_subdev_ops imx415_subdev_ops = { .video = &imx415_subdev_video_ops, .pad = &imx415_subdev_pad_ops, }; static int imx415_subdev_init(struct imx415 *sensor) { struct i2c_client *client = to_i2c_client(sensor->dev); int ret; v4l2_i2c_subdev_init(&sensor->subdev, client, &imx415_subdev_ops); ret = imx415_ctrls_init(sensor); if (ret) return ret; sensor->subdev.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE | V4L2_SUBDEV_FL_HAS_EVENTS; sensor->pad.flags = MEDIA_PAD_FL_SOURCE; sensor->subdev.entity.function = MEDIA_ENT_F_CAM_SENSOR; ret = media_entity_pads_init(&sensor->subdev.entity, 1, &sensor->pad); if (ret < 0) { v4l2_ctrl_handler_free(&sensor->ctrls); return ret; } sensor->subdev.state_lock = sensor->subdev.ctrl_handler->lock; v4l2_subdev_init_finalize(&sensor->subdev); return 0; } static void imx415_subdev_cleanup(struct imx415 *sensor) { media_entity_cleanup(&sensor->subdev.entity); v4l2_ctrl_handler_free(&sensor->ctrls); } static int imx415_power_on(struct imx415 *sensor) { int ret; ret = regulator_bulk_enable(ARRAY_SIZE(sensor->supplies), sensor->supplies); if (ret < 0) return ret; gpiod_set_value_cansleep(sensor->reset, 0); udelay(1); ret = clk_prepare_enable(sensor->clk); if (ret < 0) goto err_reset; /* * Data sheet states that 20 us are required before communication start, * but this doesn't work in all cases. Use 100 us to be on the safe * side. */ usleep_range(100, 200); return 0; err_reset: gpiod_set_value_cansleep(sensor->reset, 1); regulator_bulk_disable(ARRAY_SIZE(sensor->supplies), sensor->supplies); return ret; } static void imx415_power_off(struct imx415 *sensor) { clk_disable_unprepare(sensor->clk); gpiod_set_value_cansleep(sensor->reset, 1); regulator_bulk_disable(ARRAY_SIZE(sensor->supplies), sensor->supplies); } static int imx415_identify_model(struct imx415 *sensor) { int model, ret; /* * While most registers can be read when the sensor is in standby, this * is not the case of the sensor info register :-( */ ret = imx415_wakeup(sensor); if (ret) return dev_err_probe(sensor->dev, ret, "failed to get sensor out of standby\n"); ret = imx415_read(sensor, IMX415_SENSOR_INFO); if (ret < 0) { dev_err_probe(sensor->dev, ret, "failed to read sensor information\n"); goto done; } model = ret & IMX415_SENSOR_INFO_MASK; switch (model) { case IMX415_CHIP_ID: dev_info(sensor->dev, "Detected IMX415 image sensor\n"); break; default: ret = dev_err_probe(sensor->dev, -ENODEV, "invalid device model 0x%04x\n", model); goto done; } ret = 0; done: imx415_write(sensor, IMX415_MODE, IMX415_MODE_STANDBY); return ret; } static int imx415_check_inck(unsigned long inck, u64 link_frequency) { unsigned int i; for (i = 0; i < ARRAY_SIZE(imx415_clk_params); ++i) { if ((imx415_clk_params[i].lane_rate == link_frequency * 2) && imx415_clk_params[i].inck == inck) break; } if (i == ARRAY_SIZE(imx415_clk_params)) return -EINVAL; else return 0; } static int imx415_parse_hw_config(struct imx415 *sensor) { struct v4l2_fwnode_endpoint bus_cfg = { .bus_type = V4L2_MBUS_CSI2_DPHY, }; struct fwnode_handle *ep; u64 lane_rate; unsigned long inck; unsigned int i, j; int ret; for (i = 0; i < ARRAY_SIZE(sensor->supplies); ++i) sensor->supplies[i].supply = imx415_supply_names[i]; ret = devm_regulator_bulk_get(sensor->dev, ARRAY_SIZE(sensor->supplies), sensor->supplies); if (ret) return dev_err_probe(sensor->dev, ret, "failed to get supplies\n"); sensor->reset = devm_gpiod_get_optional(sensor->dev, "reset", GPIOD_OUT_HIGH); if (IS_ERR(sensor->reset)) return dev_err_probe(sensor->dev, PTR_ERR(sensor->reset), "failed to get reset GPIO\n"); sensor->clk = devm_clk_get(sensor->dev, "inck"); if (IS_ERR(sensor->clk)) return dev_err_probe(sensor->dev, PTR_ERR(sensor->clk), "failed to get clock\n"); ep = fwnode_graph_get_next_endpoint(dev_fwnode(sensor->dev), NULL); if (!ep) return -ENXIO; ret = v4l2_fwnode_endpoint_alloc_parse(ep, &bus_cfg); fwnode_handle_put(ep); if (ret) return ret; switch (bus_cfg.bus.mipi_csi2.num_data_lanes) { case 2: case 4: sensor->num_data_lanes = bus_cfg.bus.mipi_csi2.num_data_lanes; break; default: ret = dev_err_probe(sensor->dev, -EINVAL, "invalid number of CSI2 data lanes %d\n", bus_cfg.bus.mipi_csi2.num_data_lanes); goto done_endpoint_free; } if (!bus_cfg.nr_of_link_frequencies) { ret = dev_err_probe(sensor->dev, -EINVAL, "no link frequencies defined"); goto done_endpoint_free; } /* * Check if there exists a sensor mode defined for current INCK, * number of lanes and given lane rates. */ inck = clk_get_rate(sensor->clk); for (i = 0; i < bus_cfg.nr_of_link_frequencies; ++i) { if (imx415_check_inck(inck, bus_cfg.link_frequencies[i])) { dev_dbg(sensor->dev, "INCK %lu Hz not supported for this link freq", inck); continue; } for (j = 0; j < ARRAY_SIZE(supported_modes); ++j) { if (sensor->num_data_lanes != supported_modes[j].lanes) continue; if (bus_cfg.link_frequencies[i] * 2 != supported_modes[j].lane_rate) continue; sensor->cur_mode = j; break; } if (j < ARRAY_SIZE(supported_modes)) break; } if (i == bus_cfg.nr_of_link_frequencies) { ret = dev_err_probe(sensor->dev, -EINVAL, "no valid sensor mode defined\n"); goto done_endpoint_free; } lane_rate = supported_modes[sensor->cur_mode].lane_rate; for (i = 0; i < ARRAY_SIZE(imx415_clk_params); ++i) { if (lane_rate == imx415_clk_params[i].lane_rate && inck == imx415_clk_params[i].inck) { sensor->clk_params = &imx415_clk_params[i]; break; } } if (i == ARRAY_SIZE(imx415_clk_params)) { ret = dev_err_probe(sensor->dev, -EINVAL, "Mode %d not supported\n", sensor->cur_mode); goto done_endpoint_free; } ret = 0; dev_dbg(sensor->dev, "clock: %lu Hz, lane_rate: %llu bps, lanes: %d\n", inck, lane_rate, sensor->num_data_lanes); done_endpoint_free: v4l2_fwnode_endpoint_free(&bus_cfg); return ret; } static int imx415_probe(struct i2c_client *client) { struct imx415 *sensor; int ret; sensor = devm_kzalloc(&client->dev, sizeof(*sensor), GFP_KERNEL); if (!sensor) return -ENOMEM; sensor->dev = &client->dev; ret = imx415_parse_hw_config(sensor); if (ret) return ret; sensor->regmap = devm_regmap_init_i2c(client, &imx415_regmap_config); if (IS_ERR(sensor->regmap)) return PTR_ERR(sensor->regmap); /* * Enable power management. The driver supports runtime PM, but needs to * work when runtime PM is disabled in the kernel. To that end, power * the sensor on manually here, identify it, and fully initialize it. */ ret = imx415_power_on(sensor); if (ret) return ret; ret = imx415_identify_model(sensor); if (ret) goto err_power; ret = imx415_subdev_init(sensor); if (ret) goto err_power; /* * Enable runtime PM. As the device has been powered manually, mark it * as active, and increase the usage count without resuming the device. */ pm_runtime_set_active(sensor->dev); pm_runtime_get_noresume(sensor->dev); pm_runtime_enable(sensor->dev); ret = v4l2_async_register_subdev_sensor(&sensor->subdev); if (ret < 0) goto err_pm; /* * Finally, enable autosuspend and decrease the usage count. The device * will get suspended after the autosuspend delay, turning the power * off. */ pm_runtime_set_autosuspend_delay(sensor->dev, 1000); pm_runtime_use_autosuspend(sensor->dev); pm_runtime_put_autosuspend(sensor->dev); return 0; err_pm: pm_runtime_disable(sensor->dev); pm_runtime_put_noidle(sensor->dev); imx415_subdev_cleanup(sensor); err_power: imx415_power_off(sensor); return ret; } static void imx415_remove(struct i2c_client *client) { struct v4l2_subdev *subdev = i2c_get_clientdata(client); struct imx415 *sensor = to_imx415(subdev); v4l2_async_unregister_subdev(subdev); imx415_subdev_cleanup(sensor); /* * Disable runtime PM. In case runtime PM is disabled in the kernel, * make sure to turn power off manually. */ pm_runtime_disable(sensor->dev); if (!pm_runtime_status_suspended(sensor->dev)) imx415_power_off(sensor); pm_runtime_set_suspended(sensor->dev); } static int imx415_runtime_resume(struct device *dev) { struct i2c_client *client = to_i2c_client(dev); struct v4l2_subdev *subdev = i2c_get_clientdata(client); struct imx415 *sensor = to_imx415(subdev); return imx415_power_on(sensor); } static int imx415_runtime_suspend(struct device *dev) { struct i2c_client *client = to_i2c_client(dev); struct v4l2_subdev *subdev = i2c_get_clientdata(client); struct imx415 *sensor = to_imx415(subdev); imx415_power_off(sensor); return 0; } static DEFINE_RUNTIME_DEV_PM_OPS(imx415_pm_ops, imx415_runtime_suspend, imx415_runtime_resume, NULL); static const struct of_device_id imx415_of_match[] = { { .compatible = "sony,imx415" }, { /* sentinel */ } }; MODULE_DEVICE_TABLE(of, imx415_of_match); static struct i2c_driver imx415_driver = { .probe = imx415_probe, .remove = imx415_remove, .driver = { .name = "imx415", .of_match_table = imx415_of_match, .pm = pm_ptr(&imx415_pm_ops), }, }; module_i2c_driver(imx415_driver); MODULE_DESCRIPTION("Sony IMX415 image sensor driver"); MODULE_AUTHOR("Gerald Loacker <gerald.loacker@wolfvision.net>"); MODULE_AUTHOR("Michael Riesch <michael.riesch@wolfvision.net>"); MODULE_LICENSE("GPL");
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