| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Dave Stevenson | 5522 | 85.68% | 1 | 25.00% |
| Lad Prabhakar | 923 | 14.32% | 3 | 75.00% |
| Total | 6445 | 4 |
// SPDX-License-Identifier: GPL-2.0 /* * A V4L2 driver for Sony IMX219 cameras. * Copyright (C) 2019, Raspberry Pi (Trading) Ltd * * Based on Sony imx258 camera driver * Copyright (C) 2018 Intel Corporation * * DT / fwnode changes, and regulator / GPIO control taken from imx214 driver * Copyright 2018 Qtechnology A/S * * Flip handling taken from the Sony IMX319 driver. * Copyright (C) 2018 Intel Corporation * */ #include <linux/clk.h> #include <linux/clk-provider.h> #include <linux/clkdev.h> #include <linux/delay.h> #include <linux/gpio/consumer.h> #include <linux/i2c.h> #include <linux/module.h> #include <linux/pm_runtime.h> #include <linux/regulator/consumer.h> #include <media/v4l2-ctrls.h> #include <media/v4l2-device.h> #include <media/v4l2-event.h> #include <media/v4l2-fwnode.h> #include <media/v4l2-mediabus.h> #include <asm/unaligned.h> #define IMX219_REG_VALUE_08BIT 1 #define IMX219_REG_VALUE_16BIT 2 #define IMX219_REG_MODE_SELECT 0x0100 #define IMX219_MODE_STANDBY 0x00 #define IMX219_MODE_STREAMING 0x01 /* Chip ID */ #define IMX219_REG_CHIP_ID 0x0000 #define IMX219_CHIP_ID 0x0219 /* External clock frequency is 24.0M */ #define IMX219_XCLK_FREQ 24000000 /* Pixel rate is fixed at 182.4M for all the modes */ #define IMX219_PIXEL_RATE 182400000 #define IMX219_DEFAULT_LINK_FREQ 456000000 /* V_TIMING internal */ #define IMX219_REG_VTS 0x0160 #define IMX219_VTS_15FPS 0x0dc6 #define IMX219_VTS_30FPS_1080P 0x06e3 #define IMX219_VTS_30FPS_BINNED 0x06e3 #define IMX219_VTS_30FPS_640x480 0x06e3 #define IMX219_VTS_MAX 0xffff #define IMX219_VBLANK_MIN 4 /*Frame Length Line*/ #define IMX219_FLL_MIN 0x08a6 #define IMX219_FLL_MAX 0xffff #define IMX219_FLL_STEP 1 #define IMX219_FLL_DEFAULT 0x0c98 /* HBLANK control - read only */ #define IMX219_PPL_DEFAULT 3448 /* Exposure control */ #define IMX219_REG_EXPOSURE 0x015a #define IMX219_EXPOSURE_MIN 4 #define IMX219_EXPOSURE_STEP 1 #define IMX219_EXPOSURE_DEFAULT 0x640 #define IMX219_EXPOSURE_MAX 65535 /* Analog gain control */ #define IMX219_REG_ANALOG_GAIN 0x0157 #define IMX219_ANA_GAIN_MIN 0 #define IMX219_ANA_GAIN_MAX 232 #define IMX219_ANA_GAIN_STEP 1 #define IMX219_ANA_GAIN_DEFAULT 0x0 /* Digital gain control */ #define IMX219_REG_DIGITAL_GAIN 0x0158 #define IMX219_DGTL_GAIN_MIN 0x0100 #define IMX219_DGTL_GAIN_MAX 0x0fff #define IMX219_DGTL_GAIN_DEFAULT 0x0100 #define IMX219_DGTL_GAIN_STEP 1 #define IMX219_REG_ORIENTATION 0x0172 /* Test Pattern Control */ #define IMX219_REG_TEST_PATTERN 0x0600 #define IMX219_TEST_PATTERN_DISABLE 0 #define IMX219_TEST_PATTERN_SOLID_COLOR 1 #define IMX219_TEST_PATTERN_COLOR_BARS 2 #define IMX219_TEST_PATTERN_GREY_COLOR 3 #define IMX219_TEST_PATTERN_PN9 4 /* Test pattern colour components */ #define IMX219_REG_TESTP_RED 0x0602 #define IMX219_REG_TESTP_GREENR 0x0604 #define IMX219_REG_TESTP_BLUE 0x0606 #define IMX219_REG_TESTP_GREENB 0x0608 #define IMX219_TESTP_COLOUR_MIN 0 #define IMX219_TESTP_COLOUR_MAX 0x03ff #define IMX219_TESTP_COLOUR_STEP 1 #define IMX219_TESTP_RED_DEFAULT IMX219_TESTP_COLOUR_MAX #define IMX219_TESTP_GREENR_DEFAULT 0 #define IMX219_TESTP_BLUE_DEFAULT 0 #define IMX219_TESTP_GREENB_DEFAULT 0 struct imx219_reg { u16 address; u8 val; }; struct imx219_reg_list { unsigned int num_of_regs; const struct imx219_reg *regs; }; /* Mode : resolution and related config&values */ struct imx219_mode { /* Frame width */ unsigned int width; /* Frame height */ unsigned int height; /* V-timing */ unsigned int vts_def; /* Default register values */ struct imx219_reg_list reg_list; }; /* * Register sets lifted off the i2C interface from the Raspberry Pi firmware * driver. * 3280x2464 = mode 2, 1920x1080 = mode 1, 1640x1232 = mode 4, 640x480 = mode 7. */ static const struct imx219_reg mode_3280x2464_regs[] = { {0x0100, 0x00}, {0x30eb, 0x0c}, {0x30eb, 0x05}, {0x300a, 0xff}, {0x300b, 0xff}, {0x30eb, 0x05}, {0x30eb, 0x09}, {0x0114, 0x01}, {0x0128, 0x00}, {0x012a, 0x18}, {0x012b, 0x00}, {0x0164, 0x00}, {0x0165, 0x00}, {0x0166, 0x0c}, {0x0167, 0xcf}, {0x0168, 0x00}, {0x0169, 0x00}, {0x016a, 0x09}, {0x016b, 0x9f}, {0x016c, 0x0c}, {0x016d, 0xd0}, {0x016e, 0x09}, {0x016f, 0xa0}, {0x0170, 0x01}, {0x0171, 0x01}, {0x0174, 0x00}, {0x0175, 0x00}, {0x0301, 0x05}, {0x0303, 0x01}, {0x0304, 0x03}, {0x0305, 0x03}, {0x0306, 0x00}, {0x0307, 0x39}, {0x030b, 0x01}, {0x030c, 0x00}, {0x030d, 0x72}, {0x0624, 0x0c}, {0x0625, 0xd0}, {0x0626, 0x09}, {0x0627, 0xa0}, {0x455e, 0x00}, {0x471e, 0x4b}, {0x4767, 0x0f}, {0x4750, 0x14}, {0x4540, 0x00}, {0x47b4, 0x14}, {0x4713, 0x30}, {0x478b, 0x10}, {0x478f, 0x10}, {0x4793, 0x10}, {0x4797, 0x0e}, {0x479b, 0x0e}, {0x0162, 0x0d}, {0x0163, 0x78}, }; static const struct imx219_reg mode_1920_1080_regs[] = { {0x0100, 0x00}, {0x30eb, 0x05}, {0x30eb, 0x0c}, {0x300a, 0xff}, {0x300b, 0xff}, {0x30eb, 0x05}, {0x30eb, 0x09}, {0x0114, 0x01}, {0x0128, 0x00}, {0x012a, 0x18}, {0x012b, 0x00}, {0x0162, 0x0d}, {0x0163, 0x78}, {0x0164, 0x02}, {0x0165, 0xa8}, {0x0166, 0x0a}, {0x0167, 0x27}, {0x0168, 0x02}, {0x0169, 0xb4}, {0x016a, 0x06}, {0x016b, 0xeb}, {0x016c, 0x07}, {0x016d, 0x80}, {0x016e, 0x04}, {0x016f, 0x38}, {0x0170, 0x01}, {0x0171, 0x01}, {0x0174, 0x00}, {0x0175, 0x00}, {0x0301, 0x05}, {0x0303, 0x01}, {0x0304, 0x03}, {0x0305, 0x03}, {0x0306, 0x00}, {0x0307, 0x39}, {0x030b, 0x01}, {0x030c, 0x00}, {0x030d, 0x72}, {0x0624, 0x07}, {0x0625, 0x80}, {0x0626, 0x04}, {0x0627, 0x38}, {0x455e, 0x00}, {0x471e, 0x4b}, {0x4767, 0x0f}, {0x4750, 0x14}, {0x4540, 0x00}, {0x47b4, 0x14}, {0x4713, 0x30}, {0x478b, 0x10}, {0x478f, 0x10}, {0x4793, 0x10}, {0x4797, 0x0e}, {0x479b, 0x0e}, {0x0162, 0x0d}, {0x0163, 0x78}, }; static const struct imx219_reg mode_1640_1232_regs[] = { {0x0100, 0x00}, {0x30eb, 0x0c}, {0x30eb, 0x05}, {0x300a, 0xff}, {0x300b, 0xff}, {0x30eb, 0x05}, {0x30eb, 0x09}, {0x0114, 0x01}, {0x0128, 0x00}, {0x012a, 0x18}, {0x012b, 0x00}, {0x0164, 0x00}, {0x0165, 0x00}, {0x0166, 0x0c}, {0x0167, 0xcf}, {0x0168, 0x00}, {0x0169, 0x00}, {0x016a, 0x09}, {0x016b, 0x9f}, {0x016c, 0x06}, {0x016d, 0x68}, {0x016e, 0x04}, {0x016f, 0xd0}, {0x0170, 0x01}, {0x0171, 0x01}, {0x0174, 0x01}, {0x0175, 0x01}, {0x0301, 0x05}, {0x0303, 0x01}, {0x0304, 0x03}, {0x0305, 0x03}, {0x0306, 0x00}, {0x0307, 0x39}, {0x030b, 0x01}, {0x030c, 0x00}, {0x030d, 0x72}, {0x0624, 0x06}, {0x0625, 0x68}, {0x0626, 0x04}, {0x0627, 0xd0}, {0x455e, 0x00}, {0x471e, 0x4b}, {0x4767, 0x0f}, {0x4750, 0x14}, {0x4540, 0x00}, {0x47b4, 0x14}, {0x4713, 0x30}, {0x478b, 0x10}, {0x478f, 0x10}, {0x4793, 0x10}, {0x4797, 0x0e}, {0x479b, 0x0e}, {0x0162, 0x0d}, {0x0163, 0x78}, }; static const struct imx219_reg mode_640_480_regs[] = { {0x0100, 0x00}, {0x30eb, 0x05}, {0x30eb, 0x0c}, {0x300a, 0xff}, {0x300b, 0xff}, {0x30eb, 0x05}, {0x30eb, 0x09}, {0x0114, 0x01}, {0x0128, 0x00}, {0x012a, 0x18}, {0x012b, 0x00}, {0x0162, 0x0d}, {0x0163, 0x78}, {0x0164, 0x03}, {0x0165, 0xe8}, {0x0166, 0x08}, {0x0167, 0xe7}, {0x0168, 0x02}, {0x0169, 0xf0}, {0x016a, 0x06}, {0x016b, 0xaf}, {0x016c, 0x02}, {0x016d, 0x80}, {0x016e, 0x01}, {0x016f, 0xe0}, {0x0170, 0x01}, {0x0171, 0x01}, {0x0174, 0x03}, {0x0175, 0x03}, {0x0301, 0x05}, {0x0303, 0x01}, {0x0304, 0x03}, {0x0305, 0x03}, {0x0306, 0x00}, {0x0307, 0x39}, {0x030b, 0x01}, {0x030c, 0x00}, {0x030d, 0x72}, {0x0624, 0x06}, {0x0625, 0x68}, {0x0626, 0x04}, {0x0627, 0xd0}, {0x455e, 0x00}, {0x471e, 0x4b}, {0x4767, 0x0f}, {0x4750, 0x14}, {0x4540, 0x00}, {0x47b4, 0x14}, {0x4713, 0x30}, {0x478b, 0x10}, {0x478f, 0x10}, {0x4793, 0x10}, {0x4797, 0x0e}, {0x479b, 0x0e}, }; static const struct imx219_reg raw8_framefmt_regs[] = { {0x018c, 0x08}, {0x018d, 0x08}, {0x0309, 0x08}, }; static const struct imx219_reg raw10_framefmt_regs[] = { {0x018c, 0x0a}, {0x018d, 0x0a}, {0x0309, 0x0a}, }; static const char * const imx219_test_pattern_menu[] = { "Disabled", "Color Bars", "Solid Color", "Grey Color Bars", "PN9" }; static const int imx219_test_pattern_val[] = { IMX219_TEST_PATTERN_DISABLE, IMX219_TEST_PATTERN_COLOR_BARS, IMX219_TEST_PATTERN_SOLID_COLOR, IMX219_TEST_PATTERN_GREY_COLOR, IMX219_TEST_PATTERN_PN9, }; /* regulator supplies */ static const char * const imx219_supply_name[] = { /* Supplies can be enabled in any order */ "VANA", /* Analog (2.8V) supply */ "VDIG", /* Digital Core (1.8V) supply */ "VDDL", /* IF (1.2V) supply */ }; #define IMX219_NUM_SUPPLIES ARRAY_SIZE(imx219_supply_name) /* * The supported formats. * This table MUST contain 4 entries per format, to cover the various flip * combinations in the order * - no flip * - h flip * - v flip * - h&v flips */ static const u32 codes[] = { MEDIA_BUS_FMT_SRGGB10_1X10, MEDIA_BUS_FMT_SGRBG10_1X10, MEDIA_BUS_FMT_SGBRG10_1X10, MEDIA_BUS_FMT_SBGGR10_1X10, MEDIA_BUS_FMT_SRGGB8_1X8, MEDIA_BUS_FMT_SGRBG8_1X8, MEDIA_BUS_FMT_SGBRG8_1X8, MEDIA_BUS_FMT_SBGGR8_1X8, }; /* * Initialisation delay between XCLR low->high and the moment when the sensor * can start capture (i.e. can leave software stanby) must be not less than: * t4 + max(t5, t6 + <time to initialize the sensor register over I2C>) * where * t4 is fixed, and is max 200uS, * t5 is fixed, and is 6000uS, * t6 depends on the sensor external clock, and is max 32000 clock periods. * As per sensor datasheet, the external clock must be from 6MHz to 27MHz. * So for any acceptable external clock t6 is always within the range of * 1185 to 5333 uS, and is always less than t5. * For this reason this is always safe to wait (t4 + t5) = 6200 uS, then * initialize the sensor over I2C, and then exit the software standby. * * This start-up time can be optimized a bit more, if we start the writes * over I2C after (t4+t6), but before (t4+t5) expires. But then sensor * initialization over I2C may complete before (t4+t5) expires, and we must * ensure that capture is not started before (t4+t5). * * This delay doesn't account for the power supply startup time. If needed, * this should be taken care of via the regulator framework. E.g. in the * case of DT for regulator-fixed one should define the startup-delay-us * property. */ #define IMX219_XCLR_MIN_DELAY_US 6200 #define IMX219_XCLR_DELAY_RANGE_US 1000 /* Mode configs */ static const struct imx219_mode supported_modes[] = { { /* 8MPix 15fps mode */ .width = 3280, .height = 2464, .vts_def = IMX219_VTS_15FPS, .reg_list = { .num_of_regs = ARRAY_SIZE(mode_3280x2464_regs), .regs = mode_3280x2464_regs, }, }, { /* 1080P 30fps cropped */ .width = 1920, .height = 1080, .vts_def = IMX219_VTS_30FPS_1080P, .reg_list = { .num_of_regs = ARRAY_SIZE(mode_1920_1080_regs), .regs = mode_1920_1080_regs, }, }, { /* 2x2 binned 30fps mode */ .width = 1640, .height = 1232, .vts_def = IMX219_VTS_30FPS_BINNED, .reg_list = { .num_of_regs = ARRAY_SIZE(mode_1640_1232_regs), .regs = mode_1640_1232_regs, }, }, { /* 640x480 30fps mode */ .width = 640, .height = 480, .vts_def = IMX219_VTS_30FPS_640x480, .reg_list = { .num_of_regs = ARRAY_SIZE(mode_640_480_regs), .regs = mode_640_480_regs, }, }, }; struct imx219 { struct v4l2_subdev sd; struct media_pad pad; struct v4l2_mbus_framefmt fmt; struct clk *xclk; /* system clock to IMX219 */ u32 xclk_freq; struct gpio_desc *reset_gpio; struct regulator_bulk_data supplies[IMX219_NUM_SUPPLIES]; struct v4l2_ctrl_handler ctrl_handler; /* V4L2 Controls */ struct v4l2_ctrl *pixel_rate; struct v4l2_ctrl *exposure; struct v4l2_ctrl *vflip; struct v4l2_ctrl *hflip; struct v4l2_ctrl *vblank; struct v4l2_ctrl *hblank; /* Current mode */ const struct imx219_mode *mode; /* * Mutex for serialized access: * Protect sensor module set pad format and start/stop streaming safely. */ struct mutex mutex; /* Streaming on/off */ bool streaming; }; static inline struct imx219 *to_imx219(struct v4l2_subdev *_sd) { return container_of(_sd, struct imx219, sd); } /* Read registers up to 2 at a time */ static int imx219_read_reg(struct imx219 *imx219, u16 reg, u32 len, u32 *val) { struct i2c_client *client = v4l2_get_subdevdata(&imx219->sd); struct i2c_msg msgs[2]; u8 addr_buf[2] = { reg >> 8, reg & 0xff }; u8 data_buf[4] = { 0, }; int ret; if (len > 4) return -EINVAL; /* Write register address */ msgs[0].addr = client->addr; msgs[0].flags = 0; msgs[0].len = ARRAY_SIZE(addr_buf); msgs[0].buf = addr_buf; /* Read data from register */ msgs[1].addr = client->addr; msgs[1].flags = I2C_M_RD; msgs[1].len = len; msgs[1].buf = &data_buf[4 - len]; ret = i2c_transfer(client->adapter, msgs, ARRAY_SIZE(msgs)); if (ret != ARRAY_SIZE(msgs)) return -EIO; *val = get_unaligned_be32(data_buf); return 0; } /* Write registers up to 2 at a time */ static int imx219_write_reg(struct imx219 *imx219, u16 reg, u32 len, u32 val) { struct i2c_client *client = v4l2_get_subdevdata(&imx219->sd); u8 buf[6]; if (len > 4) return -EINVAL; put_unaligned_be16(reg, buf); put_unaligned_be32(val << (8 * (4 - len)), buf + 2); if (i2c_master_send(client, buf, len + 2) != len + 2) return -EIO; return 0; } /* Write a list of registers */ static int imx219_write_regs(struct imx219 *imx219, const struct imx219_reg *regs, u32 len) { struct i2c_client *client = v4l2_get_subdevdata(&imx219->sd); unsigned int i; int ret; for (i = 0; i < len; i++) { ret = imx219_write_reg(imx219, regs[i].address, 1, regs[i].val); if (ret) { dev_err_ratelimited(&client->dev, "Failed to write reg 0x%4.4x. error = %d\n", regs[i].address, ret); return ret; } } return 0; } /* Get bayer order based on flip setting. */ static u32 imx219_get_format_code(struct imx219 *imx219, u32 code) { unsigned int i; lockdep_assert_held(&imx219->mutex); for (i = 0; i < ARRAY_SIZE(codes); i++) if (codes[i] == code) break; if (i >= ARRAY_SIZE(codes)) i = 0; i = (i & ~3) | (imx219->vflip->val ? 2 : 0) | (imx219->hflip->val ? 1 : 0); return codes[i]; } static void imx219_set_default_format(struct imx219 *imx219) { struct v4l2_mbus_framefmt *fmt; fmt = &imx219->fmt; fmt->code = MEDIA_BUS_FMT_SRGGB10_1X10; fmt->colorspace = V4L2_COLORSPACE_SRGB; fmt->ycbcr_enc = V4L2_MAP_YCBCR_ENC_DEFAULT(fmt->colorspace); fmt->quantization = V4L2_MAP_QUANTIZATION_DEFAULT(true, fmt->colorspace, fmt->ycbcr_enc); fmt->xfer_func = V4L2_MAP_XFER_FUNC_DEFAULT(fmt->colorspace); fmt->width = supported_modes[0].width; fmt->height = supported_modes[0].height; fmt->field = V4L2_FIELD_NONE; } static int imx219_open(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh) { struct imx219 *imx219 = to_imx219(sd); struct v4l2_mbus_framefmt *try_fmt = v4l2_subdev_get_try_format(sd, fh->pad, 0); mutex_lock(&imx219->mutex); /* Initialize try_fmt */ try_fmt->width = supported_modes[0].width; try_fmt->height = supported_modes[0].height; try_fmt->code = imx219_get_format_code(imx219, MEDIA_BUS_FMT_SRGGB10_1X10); try_fmt->field = V4L2_FIELD_NONE; mutex_unlock(&imx219->mutex); return 0; } static int imx219_set_ctrl(struct v4l2_ctrl *ctrl) { struct imx219 *imx219 = container_of(ctrl->handler, struct imx219, ctrl_handler); struct i2c_client *client = v4l2_get_subdevdata(&imx219->sd); int ret; if (ctrl->id == V4L2_CID_VBLANK) { int exposure_max, exposure_def; /* Update max exposure while meeting expected vblanking */ exposure_max = imx219->mode->height + ctrl->val - 4; exposure_def = (exposure_max < IMX219_EXPOSURE_DEFAULT) ? exposure_max : IMX219_EXPOSURE_DEFAULT; __v4l2_ctrl_modify_range(imx219->exposure, imx219->exposure->minimum, exposure_max, imx219->exposure->step, exposure_def); } /* * Applying V4L2 control value only happens * when power is up for streaming */ if (pm_runtime_get_if_in_use(&client->dev) == 0) return 0; switch (ctrl->id) { case V4L2_CID_ANALOGUE_GAIN: ret = imx219_write_reg(imx219, IMX219_REG_ANALOG_GAIN, IMX219_REG_VALUE_08BIT, ctrl->val); break; case V4L2_CID_EXPOSURE: ret = imx219_write_reg(imx219, IMX219_REG_EXPOSURE, IMX219_REG_VALUE_16BIT, ctrl->val); break; case V4L2_CID_DIGITAL_GAIN: ret = imx219_write_reg(imx219, IMX219_REG_DIGITAL_GAIN, IMX219_REG_VALUE_16BIT, ctrl->val); break; case V4L2_CID_TEST_PATTERN: ret = imx219_write_reg(imx219, IMX219_REG_TEST_PATTERN, IMX219_REG_VALUE_16BIT, imx219_test_pattern_val[ctrl->val]); break; case V4L2_CID_HFLIP: case V4L2_CID_VFLIP: ret = imx219_write_reg(imx219, IMX219_REG_ORIENTATION, 1, imx219->hflip->val | imx219->vflip->val << 1); break; case V4L2_CID_VBLANK: ret = imx219_write_reg(imx219, IMX219_REG_VTS, IMX219_REG_VALUE_16BIT, imx219->mode->height + ctrl->val); break; case V4L2_CID_TEST_PATTERN_RED: ret = imx219_write_reg(imx219, IMX219_REG_TESTP_RED, IMX219_REG_VALUE_16BIT, ctrl->val); break; case V4L2_CID_TEST_PATTERN_GREENR: ret = imx219_write_reg(imx219, IMX219_REG_TESTP_GREENR, IMX219_REG_VALUE_16BIT, ctrl->val); break; case V4L2_CID_TEST_PATTERN_BLUE: ret = imx219_write_reg(imx219, IMX219_REG_TESTP_BLUE, IMX219_REG_VALUE_16BIT, ctrl->val); break; case V4L2_CID_TEST_PATTERN_GREENB: ret = imx219_write_reg(imx219, IMX219_REG_TESTP_GREENB, IMX219_REG_VALUE_16BIT, ctrl->val); break; default: dev_info(&client->dev, "ctrl(id:0x%x,val:0x%x) is not handled\n", ctrl->id, ctrl->val); ret = -EINVAL; break; } pm_runtime_put(&client->dev); return ret; } static const struct v4l2_ctrl_ops imx219_ctrl_ops = { .s_ctrl = imx219_set_ctrl, }; static int imx219_enum_mbus_code(struct v4l2_subdev *sd, struct v4l2_subdev_pad_config *cfg, struct v4l2_subdev_mbus_code_enum *code) { struct imx219 *imx219 = to_imx219(sd); if (code->index >= (ARRAY_SIZE(codes) / 4)) return -EINVAL; code->code = imx219_get_format_code(imx219, codes[code->index * 4]); return 0; } static int imx219_enum_frame_size(struct v4l2_subdev *sd, struct v4l2_subdev_pad_config *cfg, struct v4l2_subdev_frame_size_enum *fse) { struct imx219 *imx219 = to_imx219(sd); if (fse->index >= ARRAY_SIZE(supported_modes)) return -EINVAL; if (fse->code != imx219_get_format_code(imx219, imx219->fmt.code)) return -EINVAL; fse->min_width = supported_modes[fse->index].width; fse->max_width = fse->min_width; fse->min_height = supported_modes[fse->index].height; fse->max_height = fse->min_height; return 0; } static void imx219_reset_colorspace(struct v4l2_mbus_framefmt *fmt) { fmt->colorspace = V4L2_COLORSPACE_SRGB; fmt->ycbcr_enc = V4L2_MAP_YCBCR_ENC_DEFAULT(fmt->colorspace); fmt->quantization = V4L2_MAP_QUANTIZATION_DEFAULT(true, fmt->colorspace, fmt->ycbcr_enc); fmt->xfer_func = V4L2_MAP_XFER_FUNC_DEFAULT(fmt->colorspace); } static void imx219_update_pad_format(struct imx219 *imx219, const struct imx219_mode *mode, struct v4l2_subdev_format *fmt) { fmt->format.width = mode->width; fmt->format.height = mode->height; fmt->format.field = V4L2_FIELD_NONE; imx219_reset_colorspace(&fmt->format); } static int __imx219_get_pad_format(struct imx219 *imx219, struct v4l2_subdev_pad_config *cfg, struct v4l2_subdev_format *fmt) { if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) { struct v4l2_mbus_framefmt *try_fmt = v4l2_subdev_get_try_format(&imx219->sd, cfg, fmt->pad); /* update the code which could change due to vflip or hflip: */ try_fmt->code = imx219_get_format_code(imx219, try_fmt->code); fmt->format = *try_fmt; } else { imx219_update_pad_format(imx219, imx219->mode, fmt); fmt->format.code = imx219_get_format_code(imx219, imx219->fmt.code); } return 0; } static int imx219_get_pad_format(struct v4l2_subdev *sd, struct v4l2_subdev_pad_config *cfg, struct v4l2_subdev_format *fmt) { struct imx219 *imx219 = to_imx219(sd); int ret; mutex_lock(&imx219->mutex); ret = __imx219_get_pad_format(imx219, cfg, fmt); mutex_unlock(&imx219->mutex); return ret; } static int imx219_set_pad_format(struct v4l2_subdev *sd, struct v4l2_subdev_pad_config *cfg, struct v4l2_subdev_format *fmt) { struct imx219 *imx219 = to_imx219(sd); const struct imx219_mode *mode; struct v4l2_mbus_framefmt *framefmt; int exposure_max, exposure_def, hblank; unsigned int i; mutex_lock(&imx219->mutex); for (i = 0; i < ARRAY_SIZE(codes); i++) if (codes[i] == fmt->format.code) break; if (i >= ARRAY_SIZE(codes)) i = 0; /* Bayer order varies with flips */ fmt->format.code = imx219_get_format_code(imx219, codes[i]); mode = v4l2_find_nearest_size(supported_modes, ARRAY_SIZE(supported_modes), width, height, fmt->format.width, fmt->format.height); imx219_update_pad_format(imx219, mode, fmt); if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) { framefmt = v4l2_subdev_get_try_format(sd, cfg, fmt->pad); *framefmt = fmt->format; } else if (imx219->mode != mode || imx219->fmt.code != fmt->format.code) { imx219->fmt = fmt->format; imx219->mode = mode; /* Update limits and set FPS to default */ __v4l2_ctrl_modify_range(imx219->vblank, IMX219_VBLANK_MIN, IMX219_VTS_MAX - mode->height, 1, mode->vts_def - mode->height); __v4l2_ctrl_s_ctrl(imx219->vblank, mode->vts_def - mode->height); /* Update max exposure while meeting expected vblanking */ exposure_max = mode->vts_def - 4; exposure_def = (exposure_max < IMX219_EXPOSURE_DEFAULT) ? exposure_max : IMX219_EXPOSURE_DEFAULT; __v4l2_ctrl_modify_range(imx219->exposure, imx219->exposure->minimum, exposure_max, imx219->exposure->step, exposure_def); /* * Currently PPL is fixed to IMX219_PPL_DEFAULT, so hblank * depends on mode->width only, and is not changeble in any * way other than changing the mode. */ hblank = IMX219_PPL_DEFAULT - mode->width; __v4l2_ctrl_modify_range(imx219->hblank, hblank, hblank, 1, hblank); } mutex_unlock(&imx219->mutex); return 0; } static int imx219_set_framefmt(struct imx219 *imx219) { switch (imx219->fmt.code) { case MEDIA_BUS_FMT_SRGGB8_1X8: case MEDIA_BUS_FMT_SGRBG8_1X8: case MEDIA_BUS_FMT_SGBRG8_1X8: case MEDIA_BUS_FMT_SBGGR8_1X8: return imx219_write_regs(imx219, raw8_framefmt_regs, ARRAY_SIZE(raw8_framefmt_regs)); case MEDIA_BUS_FMT_SRGGB10_1X10: case MEDIA_BUS_FMT_SGRBG10_1X10: case MEDIA_BUS_FMT_SGBRG10_1X10: case MEDIA_BUS_FMT_SBGGR10_1X10: return imx219_write_regs(imx219, raw10_framefmt_regs, ARRAY_SIZE(raw10_framefmt_regs)); } return -EINVAL; } static int imx219_start_streaming(struct imx219 *imx219) { struct i2c_client *client = v4l2_get_subdevdata(&imx219->sd); const struct imx219_reg_list *reg_list; int ret; /* Apply default values of current mode */ reg_list = &imx219->mode->reg_list; ret = imx219_write_regs(imx219, reg_list->regs, reg_list->num_of_regs); if (ret) { dev_err(&client->dev, "%s failed to set mode\n", __func__); return ret; } ret = imx219_set_framefmt(imx219); if (ret) { dev_err(&client->dev, "%s failed to set frame format: %d\n", __func__, ret); return ret; } /* Apply customized values from user */ ret = __v4l2_ctrl_handler_setup(imx219->sd.ctrl_handler); if (ret) return ret; /* set stream on register */ return imx219_write_reg(imx219, IMX219_REG_MODE_SELECT, IMX219_REG_VALUE_08BIT, IMX219_MODE_STREAMING); } static void imx219_stop_streaming(struct imx219 *imx219) { struct i2c_client *client = v4l2_get_subdevdata(&imx219->sd); int ret; /* set stream off register */ ret = imx219_write_reg(imx219, IMX219_REG_MODE_SELECT, IMX219_REG_VALUE_08BIT, IMX219_MODE_STANDBY); if (ret) dev_err(&client->dev, "%s failed to set stream\n", __func__); } static int imx219_set_stream(struct v4l2_subdev *sd, int enable) { struct imx219 *imx219 = to_imx219(sd); struct i2c_client *client = v4l2_get_subdevdata(sd); int ret = 0; mutex_lock(&imx219->mutex); if (imx219->streaming == enable) { mutex_unlock(&imx219->mutex); return 0; } if (enable) { ret = pm_runtime_get_sync(&client->dev); if (ret < 0) { pm_runtime_put_noidle(&client->dev); goto err_unlock; } /* * Apply default & customized values * and then start streaming. */ ret = imx219_start_streaming(imx219); if (ret) goto err_rpm_put; } else { imx219_stop_streaming(imx219); pm_runtime_put(&client->dev); } imx219->streaming = enable; /* vflip and hflip cannot change during streaming */ __v4l2_ctrl_grab(imx219->vflip, enable); __v4l2_ctrl_grab(imx219->hflip, enable); mutex_unlock(&imx219->mutex); return ret; err_rpm_put: pm_runtime_put(&client->dev); err_unlock: mutex_unlock(&imx219->mutex); return ret; } /* Power/clock management functions */ static int imx219_power_on(struct device *dev) { struct i2c_client *client = to_i2c_client(dev); struct v4l2_subdev *sd = i2c_get_clientdata(client); struct imx219 *imx219 = to_imx219(sd); int ret; ret = regulator_bulk_enable(IMX219_NUM_SUPPLIES, imx219->supplies); if (ret) { dev_err(&client->dev, "%s: failed to enable regulators\n", __func__); return ret; } ret = clk_prepare_enable(imx219->xclk); if (ret) { dev_err(&client->dev, "%s: failed to enable clock\n", __func__); goto reg_off; } gpiod_set_value_cansleep(imx219->reset_gpio, 1); usleep_range(IMX219_XCLR_MIN_DELAY_US, IMX219_XCLR_MIN_DELAY_US + IMX219_XCLR_DELAY_RANGE_US); return 0; reg_off: regulator_bulk_disable(IMX219_NUM_SUPPLIES, imx219->supplies); return ret; } static int imx219_power_off(struct device *dev) { struct i2c_client *client = to_i2c_client(dev); struct v4l2_subdev *sd = i2c_get_clientdata(client); struct imx219 *imx219 = to_imx219(sd); gpiod_set_value_cansleep(imx219->reset_gpio, 0); regulator_bulk_disable(IMX219_NUM_SUPPLIES, imx219->supplies); clk_disable_unprepare(imx219->xclk); return 0; } static int __maybe_unused imx219_suspend(struct device *dev) { struct i2c_client *client = to_i2c_client(dev); struct v4l2_subdev *sd = i2c_get_clientdata(client); struct imx219 *imx219 = to_imx219(sd); if (imx219->streaming) imx219_stop_streaming(imx219); return 0; } static int __maybe_unused imx219_resume(struct device *dev) { struct i2c_client *client = to_i2c_client(dev); struct v4l2_subdev *sd = i2c_get_clientdata(client); struct imx219 *imx219 = to_imx219(sd); int ret; if (imx219->streaming) { ret = imx219_start_streaming(imx219); if (ret) goto error; } return 0; error: imx219_stop_streaming(imx219); imx219->streaming = 0; return ret; } static int imx219_get_regulators(struct imx219 *imx219) { struct i2c_client *client = v4l2_get_subdevdata(&imx219->sd); unsigned int i; for (i = 0; i < IMX219_NUM_SUPPLIES; i++) imx219->supplies[i].supply = imx219_supply_name[i]; return devm_regulator_bulk_get(&client->dev, IMX219_NUM_SUPPLIES, imx219->supplies); } /* Verify chip ID */ static int imx219_identify_module(struct imx219 *imx219) { struct i2c_client *client = v4l2_get_subdevdata(&imx219->sd); int ret; u32 val; ret = imx219_read_reg(imx219, IMX219_REG_CHIP_ID, IMX219_REG_VALUE_16BIT, &val); if (ret) { dev_err(&client->dev, "failed to read chip id %x\n", IMX219_CHIP_ID); return ret; } if (val != IMX219_CHIP_ID) { dev_err(&client->dev, "chip id mismatch: %x!=%x\n", IMX219_CHIP_ID, val); return -EIO; } return 0; } static const struct v4l2_subdev_core_ops imx219_core_ops = { .subscribe_event = v4l2_ctrl_subdev_subscribe_event, .unsubscribe_event = v4l2_event_subdev_unsubscribe, }; static const struct v4l2_subdev_video_ops imx219_video_ops = { .s_stream = imx219_set_stream, }; static const struct v4l2_subdev_pad_ops imx219_pad_ops = { .enum_mbus_code = imx219_enum_mbus_code, .get_fmt = imx219_get_pad_format, .set_fmt = imx219_set_pad_format, .enum_frame_size = imx219_enum_frame_size, }; static const struct v4l2_subdev_ops imx219_subdev_ops = { .core = &imx219_core_ops, .video = &imx219_video_ops, .pad = &imx219_pad_ops, }; static const struct v4l2_subdev_internal_ops imx219_internal_ops = { .open = imx219_open, }; /* Initialize control handlers */ static int imx219_init_controls(struct imx219 *imx219) { struct i2c_client *client = v4l2_get_subdevdata(&imx219->sd); struct v4l2_ctrl_handler *ctrl_hdlr; unsigned int height = imx219->mode->height; int exposure_max, exposure_def, hblank; int i, ret; ctrl_hdlr = &imx219->ctrl_handler; ret = v4l2_ctrl_handler_init(ctrl_hdlr, 9); if (ret) return ret; mutex_init(&imx219->mutex); ctrl_hdlr->lock = &imx219->mutex; /* By default, PIXEL_RATE is read only */ imx219->pixel_rate = v4l2_ctrl_new_std(ctrl_hdlr, &imx219_ctrl_ops, V4L2_CID_PIXEL_RATE, IMX219_PIXEL_RATE, IMX219_PIXEL_RATE, 1, IMX219_PIXEL_RATE); /* Initial vblank/hblank/exposure parameters based on current mode */ imx219->vblank = v4l2_ctrl_new_std(ctrl_hdlr, &imx219_ctrl_ops, V4L2_CID_VBLANK, IMX219_VBLANK_MIN, IMX219_VTS_MAX - height, 1, imx219->mode->vts_def - height); hblank = IMX219_PPL_DEFAULT - imx219->mode->width; imx219->hblank = v4l2_ctrl_new_std(ctrl_hdlr, &imx219_ctrl_ops, V4L2_CID_HBLANK, hblank, hblank, 1, hblank); if (imx219->hblank) imx219->hblank->flags |= V4L2_CTRL_FLAG_READ_ONLY; exposure_max = imx219->mode->vts_def - 4; exposure_def = (exposure_max < IMX219_EXPOSURE_DEFAULT) ? exposure_max : IMX219_EXPOSURE_DEFAULT; imx219->exposure = v4l2_ctrl_new_std(ctrl_hdlr, &imx219_ctrl_ops, V4L2_CID_EXPOSURE, IMX219_EXPOSURE_MIN, exposure_max, IMX219_EXPOSURE_STEP, exposure_def); v4l2_ctrl_new_std(ctrl_hdlr, &imx219_ctrl_ops, V4L2_CID_ANALOGUE_GAIN, IMX219_ANA_GAIN_MIN, IMX219_ANA_GAIN_MAX, IMX219_ANA_GAIN_STEP, IMX219_ANA_GAIN_DEFAULT); v4l2_ctrl_new_std(ctrl_hdlr, &imx219_ctrl_ops, V4L2_CID_DIGITAL_GAIN, IMX219_DGTL_GAIN_MIN, IMX219_DGTL_GAIN_MAX, IMX219_DGTL_GAIN_STEP, IMX219_DGTL_GAIN_DEFAULT); imx219->hflip = v4l2_ctrl_new_std(ctrl_hdlr, &imx219_ctrl_ops, V4L2_CID_HFLIP, 0, 1, 1, 0); if (imx219->hflip) imx219->hflip->flags |= V4L2_CTRL_FLAG_MODIFY_LAYOUT; imx219->vflip = v4l2_ctrl_new_std(ctrl_hdlr, &imx219_ctrl_ops, V4L2_CID_VFLIP, 0, 1, 1, 0); if (imx219->vflip) imx219->vflip->flags |= V4L2_CTRL_FLAG_MODIFY_LAYOUT; v4l2_ctrl_new_std_menu_items(ctrl_hdlr, &imx219_ctrl_ops, V4L2_CID_TEST_PATTERN, ARRAY_SIZE(imx219_test_pattern_menu) - 1, 0, 0, imx219_test_pattern_menu); for (i = 0; i < 4; i++) { /* * The assumption is that * V4L2_CID_TEST_PATTERN_GREENR == V4L2_CID_TEST_PATTERN_RED + 1 * V4L2_CID_TEST_PATTERN_BLUE == V4L2_CID_TEST_PATTERN_RED + 2 * V4L2_CID_TEST_PATTERN_GREENB == V4L2_CID_TEST_PATTERN_RED + 3 */ v4l2_ctrl_new_std(ctrl_hdlr, &imx219_ctrl_ops, V4L2_CID_TEST_PATTERN_RED + i, IMX219_TESTP_COLOUR_MIN, IMX219_TESTP_COLOUR_MAX, IMX219_TESTP_COLOUR_STEP, IMX219_TESTP_COLOUR_MAX); /* The "Solid color" pattern is white by default */ } if (ctrl_hdlr->error) { ret = ctrl_hdlr->error; dev_err(&client->dev, "%s control init failed (%d)\n", __func__, ret); goto error; } imx219->sd.ctrl_handler = ctrl_hdlr; return 0; error: v4l2_ctrl_handler_free(ctrl_hdlr); mutex_destroy(&imx219->mutex); return ret; } static void imx219_free_controls(struct imx219 *imx219) { v4l2_ctrl_handler_free(imx219->sd.ctrl_handler); mutex_destroy(&imx219->mutex); } static int imx219_check_hwcfg(struct device *dev) { struct fwnode_handle *endpoint; struct v4l2_fwnode_endpoint ep_cfg = { .bus_type = V4L2_MBUS_CSI2_DPHY }; int ret = -EINVAL; endpoint = fwnode_graph_get_next_endpoint(dev_fwnode(dev), NULL); if (!endpoint) { dev_err(dev, "endpoint node not found\n"); return -EINVAL; } if (v4l2_fwnode_endpoint_alloc_parse(endpoint, &ep_cfg)) { dev_err(dev, "could not parse endpoint\n"); goto error_out; } /* Check the number of MIPI CSI2 data lanes */ if (ep_cfg.bus.mipi_csi2.num_data_lanes != 2) { dev_err(dev, "only 2 data lanes are currently supported\n"); goto error_out; } /* Check the link frequency set in device tree */ if (!ep_cfg.nr_of_link_frequencies) { dev_err(dev, "link-frequency property not found in DT\n"); goto error_out; } if (ep_cfg.nr_of_link_frequencies != 1 || ep_cfg.link_frequencies[0] != IMX219_DEFAULT_LINK_FREQ) { dev_err(dev, "Link frequency not supported: %lld\n", ep_cfg.link_frequencies[0]); goto error_out; } ret = 0; error_out: v4l2_fwnode_endpoint_free(&ep_cfg); fwnode_handle_put(endpoint); return ret; } static int imx219_probe(struct i2c_client *client) { struct device *dev = &client->dev; struct imx219 *imx219; int ret; imx219 = devm_kzalloc(&client->dev, sizeof(*imx219), GFP_KERNEL); if (!imx219) return -ENOMEM; v4l2_i2c_subdev_init(&imx219->sd, client, &imx219_subdev_ops); /* Check the hardware configuration in device tree */ if (imx219_check_hwcfg(dev)) return -EINVAL; /* Get system clock (xclk) */ imx219->xclk = devm_clk_get(dev, NULL); if (IS_ERR(imx219->xclk)) { dev_err(dev, "failed to get xclk\n"); return PTR_ERR(imx219->xclk); } imx219->xclk_freq = clk_get_rate(imx219->xclk); if (imx219->xclk_freq != IMX219_XCLK_FREQ) { dev_err(dev, "xclk frequency not supported: %d Hz\n", imx219->xclk_freq); return -EINVAL; } ret = imx219_get_regulators(imx219); if (ret) { dev_err(dev, "failed to get regulators\n"); return ret; } /* Request optional enable pin */ imx219->reset_gpio = devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_HIGH); /* * The sensor must be powered for imx219_identify_module() * to be able to read the CHIP_ID register */ ret = imx219_power_on(dev); if (ret) return ret; ret = imx219_identify_module(imx219); if (ret) goto error_power_off; /* Set default mode to max resolution */ imx219->mode = &supported_modes[0]; /* sensor doesn't enter LP-11 state upon power up until and unless * streaming is started, so upon power up switch the modes to: * streaming -> standby */ ret = imx219_write_reg(imx219, IMX219_REG_MODE_SELECT, IMX219_REG_VALUE_08BIT, IMX219_MODE_STREAMING); if (ret < 0) goto error_power_off; usleep_range(100, 110); /* put sensor back to standby mode */ ret = imx219_write_reg(imx219, IMX219_REG_MODE_SELECT, IMX219_REG_VALUE_08BIT, IMX219_MODE_STANDBY); if (ret < 0) goto error_power_off; usleep_range(100, 110); ret = imx219_init_controls(imx219); if (ret) goto error_power_off; /* Initialize subdev */ imx219->sd.internal_ops = &imx219_internal_ops; imx219->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE; imx219->sd.entity.function = MEDIA_ENT_F_CAM_SENSOR; /* Initialize source pad */ imx219->pad.flags = MEDIA_PAD_FL_SOURCE; /* Initialize default format */ imx219_set_default_format(imx219); ret = media_entity_pads_init(&imx219->sd.entity, 1, &imx219->pad); if (ret) { dev_err(dev, "failed to init entity pads: %d\n", ret); goto error_handler_free; } ret = v4l2_async_register_subdev_sensor_common(&imx219->sd); if (ret < 0) { dev_err(dev, "failed to register sensor sub-device: %d\n", ret); goto error_media_entity; } /* Enable runtime PM and turn off the device */ pm_runtime_set_active(dev); pm_runtime_enable(dev); pm_runtime_idle(dev); return 0; error_media_entity: media_entity_cleanup(&imx219->sd.entity); error_handler_free: imx219_free_controls(imx219); error_power_off: imx219_power_off(dev); return ret; } static int imx219_remove(struct i2c_client *client) { struct v4l2_subdev *sd = i2c_get_clientdata(client); struct imx219 *imx219 = to_imx219(sd); v4l2_async_unregister_subdev(sd); media_entity_cleanup(&sd->entity); imx219_free_controls(imx219); pm_runtime_disable(&client->dev); if (!pm_runtime_status_suspended(&client->dev)) imx219_power_off(&client->dev); pm_runtime_set_suspended(&client->dev); return 0; } static const struct of_device_id imx219_dt_ids[] = { { .compatible = "sony,imx219" }, { /* sentinel */ } }; MODULE_DEVICE_TABLE(of, imx219_dt_ids); static const struct dev_pm_ops imx219_pm_ops = { SET_SYSTEM_SLEEP_PM_OPS(imx219_suspend, imx219_resume) SET_RUNTIME_PM_OPS(imx219_power_off, imx219_power_on, NULL) }; static struct i2c_driver imx219_i2c_driver = { .driver = { .name = "imx219", .of_match_table = imx219_dt_ids, .pm = &imx219_pm_ops, }, .probe_new = imx219_probe, .remove = imx219_remove, }; module_i2c_driver(imx219_i2c_driver); MODULE_AUTHOR("Dave Stevenson <dave.stevenson@raspberrypi.com"); MODULE_DESCRIPTION("Sony IMX219 sensor driver"); MODULE_LICENSE("GPL v2");
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