| Message ID | 20200120081558.25258-3-andrey.konovalov@linaro.org (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | Add IMX219 CMOS image sensor support | expand |
On Mon, Jan 20, 2020 at 11:15:58AM +0300, Andrey Konovalov wrote: > From: Dave Stevenson <dave.stevenson@raspberrypi.com> > > Adds a driver for the 8MPix Sony IMX219 CSI2 sensor. > Whilst the sensor supports 2 or 4 CSI2 data lanes, this driver > currently only supports 2 lanes. > 8MPix @ 15fps, 1080P @ 30fps (cropped FOV), and 1640x1232 (2x2 binned) > @ 30fps are currently supported. > > Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com> > Signed-off-by: Andrey Konovalov <andrey.konovalov@linaro.org> Applied the set with the following diff: diff --git a/drivers/media/i2c/imx219.c b/drivers/media/i2c/imx219.c index 8627a5903039..f1effb5a5f66 100644 --- a/drivers/media/i2c/imx219.c +++ b/drivers/media/i2c/imx219.c @@ -1122,7 +1122,7 @@ static void imx219_free_controls(struct imx219 *imx219) mutex_destroy(&imx219->mutex); } -int imx219_check_hwcfg(struct device *dev) +static int imx219_check_hwcfg(struct device *dev) { struct fwnode_handle *endpoint; struct v4l2_fwnode_endpoint ep_cfg = { > --- > drivers/media/i2c/Kconfig | 11 + > drivers/media/i2c/Makefile | 1 + > drivers/media/i2c/imx219.c | 1312 ++++++++++++++++++++++++++++++++++++ > 3 files changed, 1324 insertions(+) > create mode 100644 drivers/media/i2c/imx219.c > > diff --git a/drivers/media/i2c/Kconfig b/drivers/media/i2c/Kconfig > index c68e002d26ea..87fba68542b5 100644 > --- a/drivers/media/i2c/Kconfig > +++ b/drivers/media/i2c/Kconfig > @@ -591,6 +591,17 @@ config VIDEO_IMX214 > To compile this driver as a module, choose M here: the > module will be called imx214. > > +config VIDEO_IMX219 > + tristate "Sony IMX219 sensor support" > + depends on I2C && VIDEO_V4L2 && VIDEO_V4L2_SUBDEV_API > + select V4L2_FWNODE > + help > + This is a Video4Linux2 sensor driver for the Sony > + IMX219 camera. > + > + To compile this driver as a module, choose M here: the > + module will be called imx219. > + > config VIDEO_IMX258 > tristate "Sony IMX258 sensor support" > depends on I2C && VIDEO_V4L2 && VIDEO_V4L2_SUBDEV_API > diff --git a/drivers/media/i2c/Makefile b/drivers/media/i2c/Makefile > index c147bb9d28db..77bf7d0b691f 100644 > --- a/drivers/media/i2c/Makefile > +++ b/drivers/media/i2c/Makefile > @@ -111,6 +111,7 @@ obj-$(CONFIG_VIDEO_OV2659) += ov2659.o > obj-$(CONFIG_VIDEO_TC358743) += tc358743.o > obj-$(CONFIG_VIDEO_HI556) += hi556.o > obj-$(CONFIG_VIDEO_IMX214) += imx214.o > +obj-$(CONFIG_VIDEO_IMX219) += imx219.o > obj-$(CONFIG_VIDEO_IMX258) += imx258.o > obj-$(CONFIG_VIDEO_IMX274) += imx274.o > obj-$(CONFIG_VIDEO_IMX290) += imx290.o > diff --git a/drivers/media/i2c/imx219.c b/drivers/media/i2c/imx219.c > new file mode 100644 > index 000000000000..8627a5903039 > --- /dev/null > +++ b/drivers/media/i2c/imx219.c > @@ -0,0 +1,1312 @@ > +// 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_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, and 1640x1232 = mode 4. > + */ > +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}, > + {0x018c, 0x0a}, > + {0x018d, 0x0a}, > + {0x0301, 0x05}, > + {0x0303, 0x01}, > + {0x0304, 0x03}, > + {0x0305, 0x03}, > + {0x0306, 0x00}, > + {0x0307, 0x39}, > + {0x0309, 0x0a}, > + {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}, > + {0x018c, 0x0a}, > + {0x018d, 0x0a}, > + {0x0301, 0x05}, > + {0x0303, 0x01}, > + {0x0304, 0x03}, > + {0x0305, 0x03}, > + {0x0306, 0x00}, > + {0x0307, 0x39}, > + {0x0309, 0x0a}, > + {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}, > + {0x018c, 0x0a}, > + {0x018d, 0x0a}, > + {0x0301, 0x05}, > + {0x0303, 0x01}, > + {0x0304, 0x03}, > + {0x0305, 0x03}, > + {0x0306, 0x00}, > + {0x0307, 0x39}, > + {0x0309, 0x0a}, > + {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 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) > + > +/* > + * 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, > + }, > + }, > +}; > + > +struct imx219 { > + struct v4l2_subdev sd; > + struct media_pad pad; > + > + 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) > +{ > + /* > + * Only one bayer order is supported. > + * It depends on the flip settings. > + */ > + static const u32 codes[2][2] = { > + { MEDIA_BUS_FMT_SRGGB10_1X10, MEDIA_BUS_FMT_SGRBG10_1X10, }, > + { MEDIA_BUS_FMT_SGBRG10_1X10, MEDIA_BUS_FMT_SBGGR10_1X10, }, > + }; > + > + lockdep_assert_held(&imx219->mutex); > + return codes[imx219->vflip->val][imx219->hflip->val]; > +} > + > +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); > + 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); > + > + /* > + * Only one bayer order is supported (though it depends on the flip > + * settings) > + */ > + if (code->index > 0) > + return -EINVAL; > + > + code->code = imx219_get_format_code(imx219); > + > + 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)) > + 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.code = imx219_get_format_code(imx219); > + 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); > + fmt->format = *try_fmt; > + } else { > + imx219_update_pad_format(imx219, imx219->mode, fmt); > + } > + > + 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; > + > + mutex_lock(&imx219->mutex); > + > + /* Bayer order varies with flips */ > + fmt->format.code = imx219_get_format_code(imx219); > + > + 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->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_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; > + } > + > + /* 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); > +} > + > +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]; > + > + 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; > + > + 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"); > -- > 2.17.1 >
diff --git a/drivers/media/i2c/Kconfig b/drivers/media/i2c/Kconfig index c68e002d26ea..87fba68542b5 100644 --- a/drivers/media/i2c/Kconfig +++ b/drivers/media/i2c/Kconfig @@ -591,6 +591,17 @@ config VIDEO_IMX214 To compile this driver as a module, choose M here: the module will be called imx214. +config VIDEO_IMX219 + tristate "Sony IMX219 sensor support" + depends on I2C && VIDEO_V4L2 && VIDEO_V4L2_SUBDEV_API + select V4L2_FWNODE + help + This is a Video4Linux2 sensor driver for the Sony + IMX219 camera. + + To compile this driver as a module, choose M here: the + module will be called imx219. + config VIDEO_IMX258 tristate "Sony IMX258 sensor support" depends on I2C && VIDEO_V4L2 && VIDEO_V4L2_SUBDEV_API diff --git a/drivers/media/i2c/Makefile b/drivers/media/i2c/Makefile index c147bb9d28db..77bf7d0b691f 100644 --- a/drivers/media/i2c/Makefile +++ b/drivers/media/i2c/Makefile @@ -111,6 +111,7 @@ obj-$(CONFIG_VIDEO_OV2659) += ov2659.o obj-$(CONFIG_VIDEO_TC358743) += tc358743.o obj-$(CONFIG_VIDEO_HI556) += hi556.o obj-$(CONFIG_VIDEO_IMX214) += imx214.o +obj-$(CONFIG_VIDEO_IMX219) += imx219.o obj-$(CONFIG_VIDEO_IMX258) += imx258.o obj-$(CONFIG_VIDEO_IMX274) += imx274.o obj-$(CONFIG_VIDEO_IMX290) += imx290.o diff --git a/drivers/media/i2c/imx219.c b/drivers/media/i2c/imx219.c new file mode 100644 index 000000000000..8627a5903039 --- /dev/null +++ b/drivers/media/i2c/imx219.c @@ -0,0 +1,1312 @@ +// 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_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, and 1640x1232 = mode 4. + */ +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}, + {0x018c, 0x0a}, + {0x018d, 0x0a}, + {0x0301, 0x05}, + {0x0303, 0x01}, + {0x0304, 0x03}, + {0x0305, 0x03}, + {0x0306, 0x00}, + {0x0307, 0x39}, + {0x0309, 0x0a}, + {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}, + {0x018c, 0x0a}, + {0x018d, 0x0a}, + {0x0301, 0x05}, + {0x0303, 0x01}, + {0x0304, 0x03}, + {0x0305, 0x03}, + {0x0306, 0x00}, + {0x0307, 0x39}, + {0x0309, 0x0a}, + {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}, + {0x018c, 0x0a}, + {0x018d, 0x0a}, + {0x0301, 0x05}, + {0x0303, 0x01}, + {0x0304, 0x03}, + {0x0305, 0x03}, + {0x0306, 0x00}, + {0x0307, 0x39}, + {0x0309, 0x0a}, + {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 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) + +/* + * 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, + }, + }, +}; + +struct imx219 { + struct v4l2_subdev sd; + struct media_pad pad; + + 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) +{ + /* + * Only one bayer order is supported. + * It depends on the flip settings. + */ + static const u32 codes[2][2] = { + { MEDIA_BUS_FMT_SRGGB10_1X10, MEDIA_BUS_FMT_SGRBG10_1X10, }, + { MEDIA_BUS_FMT_SGBRG10_1X10, MEDIA_BUS_FMT_SBGGR10_1X10, }, + }; + + lockdep_assert_held(&imx219->mutex); + return codes[imx219->vflip->val][imx219->hflip->val]; +} + +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); + 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); + + /* + * Only one bayer order is supported (though it depends on the flip + * settings) + */ + if (code->index > 0) + return -EINVAL; + + code->code = imx219_get_format_code(imx219); + + 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)) + 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.code = imx219_get_format_code(imx219); + 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); + fmt->format = *try_fmt; + } else { + imx219_update_pad_format(imx219, imx219->mode, fmt); + } + + 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; + + mutex_lock(&imx219->mutex); + + /* Bayer order varies with flips */ + fmt->format.code = imx219_get_format_code(imx219); + + 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->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_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; + } + + /* 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); +} + +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]; + + 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; + + 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");