From 931422cb12cc1f5256bc30afc129f737932175de Mon Sep 17 00:00:00 2001 From: Cai YiWei Date: Fri, 15 Feb 2019 10:46:26 +0800 Subject: [PATCH] media: i2c: add imx327 Change-Id: Idffad2860d824ba445d4fecd08b7f000d77bf980 Signed-off-by: Cai YiWei --- drivers/media/i2c/Kconfig | 8 + drivers/media/i2c/Makefile | 1 + drivers/media/i2c/imx327.c | 982 +++++++++++++++++++++++++++++++++++++ 3 files changed, 991 insertions(+) create mode 100644 drivers/media/i2c/imx327.c diff --git a/drivers/media/i2c/Kconfig b/drivers/media/i2c/Kconfig index 4bdfdac254ad..9f6d1e0ce8a7 100644 --- a/drivers/media/i2c/Kconfig +++ b/drivers/media/i2c/Kconfig @@ -509,6 +509,14 @@ config VIDEO_IMX323 help This driver supports IMX323 cameras from Sony +config VIDEO_IMX327 + tristate "Sony imx327 sensor support" + depends on VIDEO_V4L2 && I2C + depends on MEDIA_CAMERA_SUPPORT + select V4L2_FWNODE + help + This driver supports IMX327 cameras from Sony + config VIDEO_VIRT_CAMERA tristate "Rockchip virtual sensor support" depends on VIDEO_V4L2 && I2C diff --git a/drivers/media/i2c/Makefile b/drivers/media/i2c/Makefile index fa55f7f2e4e6..2dd20f903bcd 100644 --- a/drivers/media/i2c/Makefile +++ b/drivers/media/i2c/Makefile @@ -94,6 +94,7 @@ obj-$(CONFIG_VIDEO_TC35874X) += tc35874x.o obj-$(CONFIG_VIDEO_OV5647) += ov5647.o obj-$(CONFIG_VIDEO_IMX219) += imx219.o obj-$(CONFIG_VIDEO_IMX323) += imx323.o +obj-$(CONFIG_VIDEO_IMX327) += imx327.o obj-$(CONFIG_VIDEO_GC2155) += gc2155.o obj-$(CONFIG_VIDEO_GC0312) += gc0312.o obj-$(CONFIG_VIDEO_GC2145) += gc2145.o diff --git a/drivers/media/i2c/imx327.c b/drivers/media/i2c/imx327.c new file mode 100644 index 000000000000..b28150e49b2e --- /dev/null +++ b/drivers/media/i2c/imx327.c @@ -0,0 +1,982 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * imx327 driver + * + * Copyright (C) 2017 Fuzhou Rockchip Electronics Co., Ltd. + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#ifndef V4L2_CID_DIGITAL_GAIN +#define V4L2_CID_DIGITAL_GAIN V4L2_CID_GAIN +#endif + +#define IMX327_DATA_FORMAT MEDIA_BUS_FMT_SRGGB12_1X12 + +#define IMX327_LINK_FREQ 222750000 +#define IMX327_LANES 2 +#define IMX327_BITS_PER_SAMPLE 12 + +/* pixel rate = link frequency * 2 * lanes / BITS_PER_SAMPLE */ +#define IMX327_PIXEL_RATE \ +(IMX327_LINK_FREQ * 2 * IMX327_LANES / IMX327_BITS_PER_SAMPLE) + +#define IMX327_XVCLK_FREQ 37125000 + +#define CHIP_ID 0xa0 +#define IMX327_REG_CHIP_ID 0x3008 + +#define IMX327_REG_CTRL_MODE 0x3000 +#define IMX327_MODE_SW_STANDBY 0x1 +#define IMX327_MODE_STREAMING 0x0 + +#define IMX327_REG_EXPOSURE_H 0x3022 +#define IMX327_REG_EXPOSURE_M 0x3021 +#define IMX327_REG_EXPOSURE_L 0x3020 + +#define IMX327_FETCH_HIGH_BYTE_EXP(VAL) (((VAL) >> 16) & 0x03) +#define IMX327_FETCH_MID_BYTE_EXP(VAL) (((VAL) >> 8) & 0xFF) +#define IMX327_FETCH_LOW_BYTE_EXP(VAL) ((VAL) & 0xFF) + +#define IMX327_EXPOSURE_MIN 4 +#define IMX327_EXPOSURE_STEP 1 +#define IMX327_VTS_MAX 0x7fff + +#define IMX327_REG_GAIN 0x3014 +#define IMX327_GAIN_MIN 0x00 +#define IMX327_GAIN_MAX 0xee +#define IMX327_GAIN_STEP 1 +#define IMX327_GAIN_DEFAULT 0x00 + +#define IMX327_REG_TEST_PATTERN 0x5e00 +#define IMX327_TEST_PATTERN_ENABLE 0x80 +#define IMX327_TEST_PATTERN_DISABLE 0x0 + +#define IMX327_REG_VTS_H 0x301a +#define IMX327_REG_VTS_M 0x3019 +#define IMX327_REG_VTS_L 0x3018 +#define IMX327_FETCH_HIGH_BYTE_VTS(VAL) (((VAL) >> 16) & 0x03) +#define IMX327_FETCH_MID_BYTE_VTS(VAL) (((VAL) >> 8) & 0xFF) +#define IMX327_FETCH_LOW_BYTE_VTS(VAL) ((VAL) & 0xFF) + +#define REG_NULL 0xFFFF + +#define IMX327_REG_VALUE_08BIT 1 +#define IMX327_REG_VALUE_16BIT 2 +#define IMX327_REG_VALUE_24BIT 3 + +static const char * const imx327_supply_names[] = { + "avdd", /* Analog power */ + "dovdd", /* Digital I/O power */ + "dvdd", /* Digital core power */ +}; + +#define IMX327_NUM_SUPPLIES ARRAY_SIZE(imx327_supply_names) + +struct regval { + u16 addr; + u8 val; +}; + +struct imx327_mode { + u32 width; + u32 height; + u32 max_fps; + u32 hts_def; + u32 vts_def; + u32 exp_def; + const struct regval *reg_list; +}; + +struct imx327 { + struct i2c_client *client; + struct clk *xvclk; + struct gpio_desc *reset_gpio; + struct gpio_desc *pwdn_gpio; + struct regulator_bulk_data supplies[IMX327_NUM_SUPPLIES]; + + struct v4l2_subdev subdev; + struct media_pad pad; + struct v4l2_ctrl_handler ctrl_handler; + struct v4l2_ctrl *exposure; + struct v4l2_ctrl *anal_gain; + struct v4l2_ctrl *digi_gain; + struct v4l2_ctrl *hblank; + struct v4l2_ctrl *vblank; + struct v4l2_ctrl *test_pattern; + struct mutex mutex; + bool streaming; + const struct imx327_mode *cur_mode; +}; + +#define to_imx327(sd) container_of(sd, struct imx327, subdev) + +/* + * Xclk 37.125Mhz + */ +static const struct regval imx327_global_regs[] = { + {0x3003, 0x01}, + {REG_NULL, 0x00}, +}; + +/* + * Xclk 37.125Mhz + * max_framerate 30fps + * mipi_datarate per lane 445Mbps + */ +static const struct regval imx327_1920x1080_regs[] = { + {0x3000, 0x01}, + {0x3001, 0x00}, + {0x3002, 0x00}, + {0x3005, 0x01}, + {0x3007, 0x00}, + {0x3009, 0x02}, + {0x300a, 0xf0}, + {0x300b, 0x00}, + {0x3011, 0x0a}, + {0x3012, 0x64}, + {0x3014, 0x00}, + {0x3018, 0x65},/* vMAX L */ + {0x3019, 0x04},/* VMAX M */ + {0x301a, 0x00},/* VMAX H */ + {0x301c, 0x30},/* HMAX L */ + {0x301d, 0x11},/* HMAX H */ + {0x3020, 0xfe}, + {0x3021, 0x03}, + {0x3022, 0x00}, + {0x3046, 0x01}, + {0x3048, 0x00}, + {0x3049, 0x08}, + {0x304b, 0x0a}, + {0x305c, 0x18}, + {0x305d, 0x03}, + {0x305e, 0x20}, + {0x305f, 0x01}, + {0x309e, 0x4a}, + {0x309f, 0x4a}, + {0x30d2, 0x19}, + {0x30d7, 0x03}, + {0x3128, 0x04}, + {0x3129, 0x00}, + {0x313b, 0x41}, + {0x315e, 0x1a}, + {0x3164, 0x1a}, + {0x317c, 0x00}, + {0x31ec, 0x0e}, + {0x3405, 0x10}, + {0x3407, 0x01}, + {0x3414, 0x0a}, + {0x3418, 0x38}, + {0x3419, 0x04}, + {0x3441, 0x0c}, + {0x3442, 0x0c}, + {0x3443, 0x01}, + {0x3444, 0x20}, + {0x3445, 0x25}, + {0x3446, 0x57}, + {0x3447, 0x00}, + {0x3448, 0x55}, + {0x3449, 0x00}, + {0x344a, 0x1f}, + {0x344b, 0x00}, + {0x344c, 0x1f}, + {0x344d, 0x00}, + {0x344e, 0x1f}, + {0x344f, 0x00}, + {0x3450, 0x77}, + {0x3451, 0x00}, + {0x3452, 0x1f}, + {0x3453, 0x00}, + {0x3454, 0x17}, + {0x3455, 0x00}, + {0x3472, 0x80}, + {0x3473, 0x07}, + {0x3480, 0x49}, + {REG_NULL, 0x00}, +}; + +static const struct imx327_mode supported_modes[] = { + { + .width = 1920, + .height = 1080, + .max_fps = 30, + .exp_def = 0x0300, + .hts_def = 0x1130, + .vts_def = 0x0465, + .reg_list = imx327_1920x1080_regs, + }, +}; + +static const s64 link_freq_menu_items[] = { + IMX327_LINK_FREQ +}; + +static const char * const imx327_test_pattern_menu[] = { + "Disabled", + "Vertical Color Bar Type 1", + "Vertical Color Bar Type 2", + "Vertical Color Bar Type 3", + "Vertical Color Bar Type 4" +}; + +/* Write registers up to 4 at a time */ +static int imx327_write_reg(struct i2c_client *client, u16 reg, + int len, u32 val) +{ + u32 buf_i, val_i; + u8 buf[6]; + u8 *val_p; + __be32 val_be; + + if (len > 4) + return -EINVAL; + + buf[0] = reg >> 8; + buf[1] = reg & 0xff; + + val_be = cpu_to_be32(val); + val_p = (u8 *)&val_be; + buf_i = 2; + val_i = 4 - len; + + while (val_i < 4) + buf[buf_i++] = val_p[val_i++]; + + if (i2c_master_send(client, buf, len + 2) != len + 2) + return -EIO; + + return 0; +} + +static int imx327_write_array(struct i2c_client *client, + const struct regval *regs) +{ + u32 i; + int ret = 0; + + for (i = 0; ret == 0 && regs[i].addr != REG_NULL; i++) + ret = imx327_write_reg(client, regs[i].addr, + IMX327_REG_VALUE_08BIT, + regs[i].val); + + return ret; +} + +/* Read registers up to 4 at a time */ +static int imx327_read_reg(struct i2c_client *client, u16 reg, unsigned int len, + u32 *val) +{ + struct i2c_msg msgs[2]; + u8 *data_be_p; + __be32 data_be = 0; + __be16 reg_addr_be = cpu_to_be16(reg); + int ret; + + if (len > 4 || !len) + return -EINVAL; + + data_be_p = (u8 *)&data_be; + /* Write register address */ + msgs[0].addr = client->addr; + msgs[0].flags = 0; + msgs[0].len = 2; + msgs[0].buf = (u8 *)®_addr_be; + + /* Read data from register */ + msgs[1].addr = client->addr; + msgs[1].flags = I2C_M_RD; + msgs[1].len = len; + msgs[1].buf = &data_be_p[4 - len]; + + ret = i2c_transfer(client->adapter, msgs, ARRAY_SIZE(msgs)); + if (ret != ARRAY_SIZE(msgs)) + return -EIO; + + *val = be32_to_cpu(data_be); + + return 0; +} + +static int imx327_get_reso_dist(const struct imx327_mode *mode, + struct v4l2_mbus_framefmt *framefmt) +{ + return abs(mode->width - framefmt->width) + + abs(mode->height - framefmt->height); +} + +static const struct imx327_mode * +imx327_find_best_fit(struct v4l2_subdev_format *fmt) +{ + struct v4l2_mbus_framefmt *framefmt = &fmt->format; + int dist; + int cur_best_fit = 0; + int cur_best_fit_dist = -1; + unsigned int i; + + for (i = 0; i < ARRAY_SIZE(supported_modes); i++) { + dist = imx327_get_reso_dist(&supported_modes[i], framefmt); + if (cur_best_fit_dist == -1 || dist < cur_best_fit_dist) { + cur_best_fit_dist = dist; + cur_best_fit = i; + } + } + + return &supported_modes[cur_best_fit]; +} + +static int imx327_set_fmt(struct v4l2_subdev *sd, + struct v4l2_subdev_pad_config *cfg, + struct v4l2_subdev_format *fmt) +{ + struct imx327 *imx327 = to_imx327(sd); + const struct imx327_mode *mode; + s64 h_blank, vblank_def; + + mutex_lock(&imx327->mutex); + + mode = imx327_find_best_fit(fmt); + fmt->format.code = IMX327_DATA_FORMAT; + fmt->format.width = mode->width; + fmt->format.height = mode->height; + fmt->format.field = V4L2_FIELD_NONE; + if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) { +#ifdef CONFIG_VIDEO_V4L2_SUBDEV_API + *v4l2_subdev_get_try_format(sd, cfg, fmt->pad) = fmt->format; +#else + mutex_unlock(&imx327->mutex); + return -ENOTTY; +#endif + } else { + imx327->cur_mode = mode; + h_blank = mode->hts_def - mode->width; + __v4l2_ctrl_modify_range(imx327->hblank, h_blank, + h_blank, 1, h_blank); + vblank_def = mode->vts_def - mode->height; + __v4l2_ctrl_modify_range(imx327->vblank, vblank_def, + IMX327_VTS_MAX - mode->height, + 1, vblank_def); + } + + mutex_unlock(&imx327->mutex); + + return 0; +} + +static int imx327_get_fmt(struct v4l2_subdev *sd, + struct v4l2_subdev_pad_config *cfg, + struct v4l2_subdev_format *fmt) +{ + struct imx327 *imx327 = to_imx327(sd); + const struct imx327_mode *mode = imx327->cur_mode; + + mutex_lock(&imx327->mutex); + if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) { +#ifdef CONFIG_VIDEO_V4L2_SUBDEV_API + fmt->format = *v4l2_subdev_get_try_format(sd, cfg, fmt->pad); +#else + mutex_unlock(&imx327->mutex); + return -ENOTTY; +#endif + } else { + fmt->format.width = mode->width; + fmt->format.height = mode->height; + fmt->format.code = IMX327_DATA_FORMAT; + fmt->format.field = V4L2_FIELD_NONE; + } + mutex_unlock(&imx327->mutex); + return 0; +} + +static int imx327_enum_mbus_code(struct v4l2_subdev *sd, + struct v4l2_subdev_pad_config *cfg, + struct v4l2_subdev_mbus_code_enum *code) +{ + if (code->index != 0) + return -EINVAL; + code->code = IMX327_DATA_FORMAT; + + return 0; +} + +static int imx327_enum_frame_sizes(struct v4l2_subdev *sd, + struct v4l2_subdev_pad_config *cfg, + struct v4l2_subdev_frame_size_enum *fse) +{ + if (fse->index >= ARRAY_SIZE(supported_modes)) + return -EINVAL; + + if (fse->code != IMX327_DATA_FORMAT) + return -EINVAL; + + fse->min_width = supported_modes[fse->index].width; + fse->max_width = supported_modes[fse->index].width; + fse->max_height = supported_modes[fse->index].height; + fse->min_height = supported_modes[fse->index].height; + + return 0; +} + +static int imx327_enable_test_pattern(struct imx327 *imx327, u32 pattern) +{ + u32 val; + + if (pattern) + val = (pattern - 1) | IMX327_TEST_PATTERN_ENABLE; + else + val = IMX327_TEST_PATTERN_DISABLE; + + return imx327_write_reg(imx327->client, + IMX327_REG_TEST_PATTERN, + IMX327_REG_VALUE_08BIT, + val); +} + +static int imx327_g_frame_interval(struct v4l2_subdev *sd, + struct v4l2_subdev_frame_interval *fi) +{ + struct imx327 *imx327 = to_imx327(sd); + const struct imx327_mode *mode = imx327->cur_mode; + + mutex_lock(&imx327->mutex); + fi->interval.numerator = 10000; + fi->interval.denominator = mode->max_fps * 10000; + mutex_unlock(&imx327->mutex); + + return 0; +} + +static int __imx327_start_stream(struct imx327 *imx327) +{ + int ret; + + ret = imx327_write_array(imx327->client, imx327_global_regs); + if (ret) + return ret; + + ret = imx327_write_array(imx327->client, imx327->cur_mode->reg_list); + if (ret) + return ret; + + /* In case these controls are set before streaming */ + mutex_unlock(&imx327->mutex); + ret = v4l2_ctrl_handler_setup(&imx327->ctrl_handler); + mutex_lock(&imx327->mutex); + if (ret) + return ret; + + return imx327_write_reg(imx327->client, IMX327_REG_CTRL_MODE, + IMX327_REG_VALUE_08BIT, 0); +} + +static int __imx327_stop_stream(struct imx327 *imx327) +{ + return imx327_write_reg(imx327->client, IMX327_REG_CTRL_MODE, + IMX327_REG_VALUE_08BIT, 1); +} + +static int imx327_s_stream(struct v4l2_subdev *sd, int on) +{ + struct imx327 *imx327 = to_imx327(sd); + struct i2c_client *client = imx327->client; + int ret = 0; + + mutex_lock(&imx327->mutex); + on = !!on; + if (on == imx327->streaming) + goto unlock_and_return; + + if (on) { + ret = pm_runtime_get_sync(&client->dev); + if (ret < 0) { + pm_runtime_put_noidle(&client->dev); + goto unlock_and_return; + } + + ret = __imx327_start_stream(imx327); + if (ret) { + v4l2_err(sd, "start stream failed while write regs\n"); + pm_runtime_put(&client->dev); + goto unlock_and_return; + } + } else { + __imx327_stop_stream(imx327); + pm_runtime_put(&client->dev); + } + + imx327->streaming = on; + +unlock_and_return: + mutex_unlock(&imx327->mutex); + + return ret; +} + +/* Calculate the delay in us by clock rate and clock cycles */ +static inline u32 imx327_cal_delay(u32 cycles) +{ + return DIV_ROUND_UP(cycles, IMX327_XVCLK_FREQ / 1000 / 1000); +} + +static int __imx327_power_on(struct imx327 *imx327) +{ + int ret; + u32 delay_us; + struct device *dev = &imx327->client->dev; + + ret = clk_set_rate(imx327->xvclk, IMX327_XVCLK_FREQ); + if (ret < 0) { + dev_err(dev, "Failed to set xvclk rate (24MHz)\n"); + return ret; + } + if (clk_get_rate(imx327->xvclk) != IMX327_XVCLK_FREQ) + dev_warn(dev, "xvclk mismatched, modes are based on 37.125MHz\n"); + ret = clk_prepare_enable(imx327->xvclk); + if (ret < 0) { + dev_err(dev, "Failed to enable xvclk\n"); + return ret; + } + + if (!IS_ERR(imx327->reset_gpio)) + gpiod_set_value_cansleep(imx327->reset_gpio, 0); + + ret = regulator_bulk_enable(IMX327_NUM_SUPPLIES, imx327->supplies); + if (ret < 0) { + dev_err(dev, "Failed to enable regulators\n"); + goto disable_clk; + } + + if (!IS_ERR(imx327->reset_gpio)) + gpiod_set_value_cansleep(imx327->reset_gpio, 1); + + usleep_range(500, 1000); + if (!IS_ERR(imx327->pwdn_gpio)) + gpiod_set_value_cansleep(imx327->pwdn_gpio, 1); + + /* 8192 cycles prior to first SCCB transaction */ + delay_us = imx327_cal_delay(8192); + usleep_range(delay_us, delay_us * 2); + + return 0; + +disable_clk: + clk_disable_unprepare(imx327->xvclk); + + return ret; +} + +static void __imx327_power_off(struct imx327 *imx327) +{ + if (!IS_ERR(imx327->pwdn_gpio)) + gpiod_set_value_cansleep(imx327->pwdn_gpio, 0); + clk_disable_unprepare(imx327->xvclk); + if (!IS_ERR(imx327->reset_gpio)) + gpiod_set_value_cansleep(imx327->reset_gpio, 0); + regulator_bulk_disable(IMX327_NUM_SUPPLIES, imx327->supplies); +} + +static int imx327_runtime_resume(struct device *dev) +{ + struct i2c_client *client = to_i2c_client(dev); + struct v4l2_subdev *sd = i2c_get_clientdata(client); + struct imx327 *imx327 = to_imx327(sd); + + return __imx327_power_on(imx327); +} + +static int imx327_runtime_suspend(struct device *dev) +{ + struct i2c_client *client = to_i2c_client(dev); + struct v4l2_subdev *sd = i2c_get_clientdata(client); + struct imx327 *imx327 = to_imx327(sd); + + __imx327_power_off(imx327); + + return 0; +} + +#ifdef CONFIG_VIDEO_V4L2_SUBDEV_API +static int imx327_open(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh) +{ + struct imx327 *imx327 = to_imx327(sd); + struct v4l2_mbus_framefmt *try_fmt = + v4l2_subdev_get_try_format(sd, fh->pad, 0); + const struct imx327_mode *def_mode = &supported_modes[0]; + + mutex_lock(&imx327->mutex); + /* Initialize try_fmt */ + try_fmt->width = def_mode->width; + try_fmt->height = def_mode->height; + try_fmt->code = IMX327_DATA_FORMAT; + try_fmt->field = V4L2_FIELD_NONE; + + mutex_unlock(&imx327->mutex); + /* No crop or compose */ + + return 0; +} +#endif + +static const struct dev_pm_ops imx327_pm_ops = { + SET_RUNTIME_PM_OPS(imx327_runtime_suspend, + imx327_runtime_resume, NULL) +}; + +#ifdef CONFIG_VIDEO_V4L2_SUBDEV_API +static const struct v4l2_subdev_internal_ops imx327_internal_ops = { + .open = imx327_open, +}; +#endif + +static const struct v4l2_subdev_video_ops imx327_video_ops = { + .s_stream = imx327_s_stream, + .g_frame_interval = imx327_g_frame_interval, +}; + +static const struct v4l2_subdev_pad_ops imx327_pad_ops = { + .enum_mbus_code = imx327_enum_mbus_code, + .enum_frame_size = imx327_enum_frame_sizes, + .get_fmt = imx327_get_fmt, + .set_fmt = imx327_set_fmt, +}; + +static const struct v4l2_subdev_ops imx327_subdev_ops = { + .video = &imx327_video_ops, + .pad = &imx327_pad_ops, +}; + +static int imx327_set_ctrl(struct v4l2_ctrl *ctrl) +{ + struct imx327 *imx327 = container_of(ctrl->handler, + struct imx327, ctrl_handler); + struct i2c_client *client = imx327->client; + s64 max; + int ret = 0; + + /* Propagate change of current control to all related controls */ + switch (ctrl->id) { + case V4L2_CID_VBLANK: + /* Update max exposure while meeting expected vblanking */ + max = imx327->cur_mode->height + ctrl->val - 4; + __v4l2_ctrl_modify_range(imx327->exposure, + imx327->exposure->minimum, max, + imx327->exposure->step, + imx327->exposure->default_value); + break; + } + + if (pm_runtime_get(&client->dev) <= 0) + return 0; + + switch (ctrl->id) { + case V4L2_CID_EXPOSURE: + /* 4 least significant bits of expsoure are fractional part */ + ret = imx327_write_reg(imx327->client, + IMX327_REG_EXPOSURE_H, + IMX327_REG_VALUE_08BIT, + IMX327_FETCH_HIGH_BYTE_EXP(ctrl->val)); + ret |= imx327_write_reg(imx327->client, + IMX327_REG_EXPOSURE_M, + IMX327_REG_VALUE_08BIT, + IMX327_FETCH_MID_BYTE_EXP(ctrl->val)); + ret |= imx327_write_reg(imx327->client, + IMX327_REG_EXPOSURE_L, + IMX327_REG_VALUE_08BIT, + IMX327_FETCH_LOW_BYTE_EXP(ctrl->val)); + break; + case V4L2_CID_ANALOGUE_GAIN: + ret = imx327_write_reg(imx327->client, + IMX327_REG_GAIN, + IMX327_REG_VALUE_08BIT, + ctrl->val); + break; + case V4L2_CID_VBLANK: + ret = imx327_write_reg(imx327->client, + IMX327_REG_VTS_H, + IMX327_REG_VALUE_08BIT, + IMX327_FETCH_HIGH_BYTE_VTS(ctrl->val + imx327->cur_mode->height)); + ret |= imx327_write_reg(imx327->client, + IMX327_REG_VTS_M, + IMX327_REG_VALUE_08BIT, + IMX327_FETCH_MID_BYTE_VTS(ctrl->val + imx327->cur_mode->height)); + ret |= imx327_write_reg(imx327->client, + IMX327_REG_VTS_L, + IMX327_REG_VALUE_08BIT, + IMX327_FETCH_LOW_BYTE_VTS(ctrl->val + imx327->cur_mode->height)); + break; + case V4L2_CID_TEST_PATTERN: + ret = imx327_enable_test_pattern(imx327, ctrl->val); + break; + default: + dev_warn(&client->dev, "%s Unhandled id:0x%x, val:0x%x\n", + __func__, ctrl->id, ctrl->val); + break; + } + + pm_runtime_put(&client->dev); + + return ret; +} + +static const struct v4l2_ctrl_ops imx327_ctrl_ops = { + .s_ctrl = imx327_set_ctrl, +}; + +static int imx327_initialize_controls(struct imx327 *imx327) +{ + const struct imx327_mode *mode; + struct v4l2_ctrl_handler *handler; + struct v4l2_ctrl *ctrl; + s64 exposure_max, vblank_def; + u32 h_blank; + int ret; + + handler = &imx327->ctrl_handler; + mode = imx327->cur_mode; + ret = v4l2_ctrl_handler_init(handler, 8); + if (ret) + return ret; + handler->lock = &imx327->mutex; + + ctrl = v4l2_ctrl_new_int_menu(handler, NULL, V4L2_CID_LINK_FREQ, + 0, 0, link_freq_menu_items); + if (ctrl) + ctrl->flags |= V4L2_CTRL_FLAG_READ_ONLY; + + v4l2_ctrl_new_std(handler, NULL, V4L2_CID_PIXEL_RATE, + 0, IMX327_PIXEL_RATE, 1, IMX327_PIXEL_RATE); + + h_blank = mode->hts_def - mode->width; + imx327->hblank = v4l2_ctrl_new_std(handler, NULL, V4L2_CID_HBLANK, + h_blank, h_blank, 1, h_blank); + if (imx327->hblank) + imx327->hblank->flags |= V4L2_CTRL_FLAG_READ_ONLY; + + vblank_def = mode->vts_def - mode->height; + imx327->vblank = v4l2_ctrl_new_std(handler, &imx327_ctrl_ops, + V4L2_CID_VBLANK, vblank_def, + IMX327_VTS_MAX - mode->height, + 1, vblank_def); + + exposure_max = mode->vts_def - 4; + imx327->exposure = v4l2_ctrl_new_std(handler, &imx327_ctrl_ops, + V4L2_CID_EXPOSURE, IMX327_EXPOSURE_MIN, + exposure_max, IMX327_EXPOSURE_STEP, + mode->exp_def); + + imx327->anal_gain = v4l2_ctrl_new_std(handler, &imx327_ctrl_ops, + V4L2_CID_ANALOGUE_GAIN, IMX327_GAIN_MIN, + IMX327_GAIN_MAX, IMX327_GAIN_STEP, + IMX327_GAIN_DEFAULT); + + imx327->test_pattern = v4l2_ctrl_new_std_menu_items(handler, + &imx327_ctrl_ops, V4L2_CID_TEST_PATTERN, + ARRAY_SIZE(imx327_test_pattern_menu) - 1, + 0, 0, imx327_test_pattern_menu); + if (handler->error) { + ret = handler->error; + dev_err(&imx327->client->dev, + "Failed to init controls(%d)\n", ret); + goto err_free_handler; + } + + imx327->subdev.ctrl_handler = handler; + + return 0; + +err_free_handler: + v4l2_ctrl_handler_free(handler); + + return ret; +} + +static int imx327_check_sensor_id(struct imx327 *imx327, + struct i2c_client *client) +{ + struct device *dev = &imx327->client->dev; + u32 id = 0; + int ret; + + ret = imx327_read_reg(client, IMX327_REG_CHIP_ID, + IMX327_REG_VALUE_08BIT, &id); + if (id != CHIP_ID) { + dev_err(dev, "Unexpected sensor id(%06x), ret(%d)\n", id, ret); + return ret; + } + + dev_info(dev, "Detected imx327 id:%06x\n", CHIP_ID); + + return 0; +} + +static int imx327_configure_regulators(struct imx327 *imx327) +{ + unsigned int i; + + for (i = 0; i < IMX327_NUM_SUPPLIES; i++) + imx327->supplies[i].supply = imx327_supply_names[i]; + + return devm_regulator_bulk_get(&imx327->client->dev, + IMX327_NUM_SUPPLIES, + imx327->supplies); +} + +static int imx327_probe(struct i2c_client *client, + const struct i2c_device_id *id) +{ + struct device *dev = &client->dev; + struct imx327 *imx327; + struct v4l2_subdev *sd; + int ret; + + imx327 = devm_kzalloc(dev, sizeof(*imx327), GFP_KERNEL); + if (!imx327) + return -ENOMEM; + + imx327->client = client; + imx327->cur_mode = &supported_modes[0]; + + imx327->xvclk = devm_clk_get(dev, "xvclk"); + if (IS_ERR(imx327->xvclk)) { + dev_err(dev, "Failed to get xvclk\n"); + return -EINVAL; + } + + imx327->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_LOW); + if (IS_ERR(imx327->reset_gpio)) + dev_warn(dev, "Failed to get reset-gpios\n"); + + imx327->pwdn_gpio = devm_gpiod_get(dev, "pwdn", GPIOD_OUT_LOW); + if (IS_ERR(imx327->pwdn_gpio)) + dev_warn(dev, "Failed to get pwdn-gpios\n"); + + ret = imx327_configure_regulators(imx327); + if (ret) { + dev_err(dev, "Failed to get power regulators\n"); + return ret; + } + + mutex_init(&imx327->mutex); + + sd = &imx327->subdev; + v4l2_i2c_subdev_init(sd, client, &imx327_subdev_ops); + ret = imx327_initialize_controls(imx327); + if (ret) + goto err_destroy_mutex; + + ret = __imx327_power_on(imx327); + if (ret) + goto err_free_handler; + + ret = imx327_check_sensor_id(imx327, client); + if (ret) + goto err_power_off; + +#ifdef CONFIG_VIDEO_V4L2_SUBDEV_API + sd->internal_ops = &imx327_internal_ops; + sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE; +#endif +#if defined(CONFIG_MEDIA_CONTROLLER) + imx327->pad.flags = MEDIA_PAD_FL_SOURCE; + sd->entity.type = MEDIA_ENT_T_V4L2_SUBDEV_SENSOR; + ret = media_entity_init(&sd->entity, 1, &imx327->pad, 0); + if (ret < 0) + goto err_power_off; +#endif + + ret = v4l2_async_register_subdev(sd); + if (ret) { + dev_err(dev, "v4l2 async register subdev failed\n"); + goto err_clean_entity; + } + + pm_runtime_set_active(dev); + pm_runtime_enable(dev); + pm_runtime_idle(dev); + + return 0; + +err_clean_entity: +#if defined(CONFIG_MEDIA_CONTROLLER) + media_entity_cleanup(&sd->entity); +#endif +err_power_off: + __imx327_power_off(imx327); +err_free_handler: + v4l2_ctrl_handler_free(&imx327->ctrl_handler); +err_destroy_mutex: + mutex_destroy(&imx327->mutex); + + return ret; +} + +static int imx327_remove(struct i2c_client *client) +{ + struct v4l2_subdev *sd = i2c_get_clientdata(client); + struct imx327 *imx327 = to_imx327(sd); + + v4l2_async_unregister_subdev(sd); +#if defined(CONFIG_MEDIA_CONTROLLER) + media_entity_cleanup(&sd->entity); +#endif + v4l2_ctrl_handler_free(&imx327->ctrl_handler); + mutex_destroy(&imx327->mutex); + + pm_runtime_disable(&client->dev); + if (!pm_runtime_status_suspended(&client->dev)) + __imx327_power_off(imx327); + pm_runtime_set_suspended(&client->dev); + + return 0; +} + +#if IS_ENABLED(CONFIG_OF) +static const struct of_device_id imx327_of_match[] = { + { .compatible = "sony,imx327" }, + {}, +}; +MODULE_DEVICE_TABLE(of, imx327_of_match); +#endif + +static const struct i2c_device_id imx327_match_id[] = { + { "sony,imx327", 0 }, + { }, +}; + +static struct i2c_driver imx327_i2c_driver = { + .driver = { + .name = "imx327", + .pm = &imx327_pm_ops, + .of_match_table = of_match_ptr(imx327_of_match), + }, + .probe = &imx327_probe, + .remove = &imx327_remove, + .id_table = imx327_match_id, +}; + +static int __init sensor_mod_init(void) +{ + return i2c_add_driver(&imx327_i2c_driver); +} + +static void __exit sensor_mod_exit(void) +{ + i2c_del_driver(&imx327_i2c_driver); +} + +device_initcall_sync(sensor_mod_init); +module_exit(sensor_mod_exit); + +MODULE_DESCRIPTION("Sony imx327 sensor driver"); +MODULE_LICENSE("GPL v2");