/* SPDX-License-Identifier: GPL-2.0-or-later */ /* v4l2 common internal API header This header contains internal shared ioctl definitions for use by the internal low-level v4l2 drivers. Each ioctl begins with VIDIOC_INT_ to clearly mark that it is an internal define, Copyright (C) 2005 Hans Verkuil <hverkuil@kernel.org> */ #ifndef V4L2_COMMON_H_ #define V4L2_COMMON_H_ #include <linux/time.h> #include <media/v4l2-dev.h> /* Common printk constructs for v4l-i2c drivers. These macros create a unique prefix consisting of the driver name, the adapter number and the i2c address. */ #define v4l_printk(level, name, adapter, addr, fmt, arg...) \ printk(level "%s %d-%04x: " fmt, name, i2c_adapter_id(adapter), addr , ## arg) #define v4l_client_printk(level, client, fmt, arg...) \ v4l_printk(level, (client)->dev.driver->name, (client)->adapter, \ (client)->addr, fmt , ## arg) #define v4l_err(client, fmt, arg...) \ v4l_client_printk(KERN_ERR, client, fmt , ## arg) #define v4l_warn(client, fmt, arg...) \ v4l_client_printk(KERN_WARNING, client, fmt , ## arg) #define v4l_info(client, fmt, arg...) \ v4l_client_printk(KERN_INFO, client, fmt , ## arg) /* These three macros assume that the debug level is set with a module parameter called 'debug'. */ #define v4l_dbg(level, debug, client, fmt, arg...) \ do { \ if (debug >= (level)) \ v4l_client_printk(KERN_DEBUG, client, fmt , ## arg); \ } while (0) /* Add a version of v4l_dbg to be used on drivers using dev_foo() macros */ #define dev_dbg_lvl(__dev, __level, __debug, __fmt, __arg...) \ do { \ if (__debug >= (__level)) \ dev_printk(KERN_DEBUG, __dev, __fmt, ##__arg); \ } while (0) /* ------------------------------------------------------------------------- */ /* These printk constructs can be used with v4l2_device and v4l2_subdev */ #define v4l2_printk(level, dev, fmt, arg...) \ printk(level "%s: " fmt, (dev)->name , ## arg) #define v4l2_err(dev, fmt, arg...) \ v4l2_printk(KERN_ERR, dev, fmt , ## arg) #define v4l2_warn(dev, fmt, arg...) \ v4l2_printk(KERN_WARNING, dev, fmt , ## arg) #define v4l2_info(dev, fmt, arg...) \ v4l2_printk(KERN_INFO, dev, fmt , ## arg) /* These three macros assume that the debug level is set with a module parameter called 'debug'. */ #define v4l2_dbg(level, debug, dev, fmt, arg...) \ do { \ if (debug >= (level)) \ v4l2_printk(KERN_DEBUG, dev, fmt , ## arg); \ } while (0) /** * v4l2_ctrl_query_fill- Fill in a struct v4l2_queryctrl * * @qctrl: pointer to the &struct v4l2_queryctrl to be filled * @min: minimum value for the control * @max: maximum value for the control * @step: control step * @def: default value for the control * * Fills the &struct v4l2_queryctrl fields for the query control. * * .. note:: * * This function assumes that the @qctrl->id field is filled. * * Returns -EINVAL if the control is not known by the V4L2 core, 0 on success. */ int v4l2_ctrl_query_fill(struct v4l2_queryctrl *qctrl, s32 min, s32 max, s32 step, s32 def); /* ------------------------------------------------------------------------- */ struct clk; struct v4l2_device; struct v4l2_subdev; struct v4l2_subdev_ops; /* I2C Helper functions */ #include <linux/i2c.h> /** * enum v4l2_i2c_tuner_type - specifies the range of tuner address that * should be used when seeking for I2C devices. * * @ADDRS_RADIO: Radio tuner addresses. * Represent the following I2C addresses: * 0x10 (if compiled with tea5761 support) * and 0x60. * @ADDRS_DEMOD: Demod tuner addresses. * Represent the following I2C addresses: * 0x42, 0x43, 0x4a and 0x4b. * @ADDRS_TV: TV tuner addresses. * Represent the following I2C addresses: * 0x42, 0x43, 0x4a, 0x4b, 0x60, 0x61, 0x62, * 0x63 and 0x64. * @ADDRS_TV_WITH_DEMOD: TV tuner addresses if demod is present, this * excludes addresses used by the demodulator * from the list of candidates. * Represent the following I2C addresses: * 0x60, 0x61, 0x62, 0x63 and 0x64. * * NOTE: All I2C addresses above use the 7-bit notation. */ enum v4l2_i2c_tuner_type { ADDRS_RADIO, ADDRS_DEMOD, ADDRS_TV, ADDRS_TV_WITH_DEMOD, }; #if defined(CONFIG_VIDEO_V4L2_I2C) /** * v4l2_i2c_new_subdev - Load an i2c module and return an initialized * &struct v4l2_subdev. * * @v4l2_dev: pointer to &struct v4l2_device * @adapter: pointer to struct i2c_adapter * @client_type: name of the chip that's on the adapter. * @addr: I2C address. If zero, it will use @probe_addrs * @probe_addrs: array with a list of address. The last entry at such * array should be %I2C_CLIENT_END. * * returns a &struct v4l2_subdev pointer. */ struct v4l2_subdev *v4l2_i2c_new_subdev(struct v4l2_device *v4l2_dev, struct i2c_adapter *adapter, const char *client_type, u8 addr, const unsigned short *probe_addrs); /** * v4l2_i2c_new_subdev_board - Load an i2c module and return an initialized * &struct v4l2_subdev. * * @v4l2_dev: pointer to &struct v4l2_device * @adapter: pointer to struct i2c_adapter * @info: pointer to struct i2c_board_info used to replace the irq, * platform_data and addr arguments. * @probe_addrs: array with a list of address. The last entry at such * array should be %I2C_CLIENT_END. * * returns a &struct v4l2_subdev pointer. */ struct v4l2_subdev *v4l2_i2c_new_subdev_board(struct v4l2_device *v4l2_dev, struct i2c_adapter *adapter, struct i2c_board_info *info, const unsigned short *probe_addrs); /** * v4l2_i2c_subdev_set_name - Set name for an I²C sub-device * * @sd: pointer to &struct v4l2_subdev * @client: pointer to struct i2c_client * @devname: the name of the device; if NULL, the I²C device drivers's name * will be used * @postfix: sub-device specific string to put right after the I²C device name; * may be NULL */ void v4l2_i2c_subdev_set_name(struct v4l2_subdev *sd, struct i2c_client *client, const char *devname, const char *postfix); /** * v4l2_i2c_subdev_init - Initializes a &struct v4l2_subdev with data from * an i2c_client struct. * * @sd: pointer to &struct v4l2_subdev * @client: pointer to struct i2c_client * @ops: pointer to &struct v4l2_subdev_ops */ void v4l2_i2c_subdev_init(struct v4l2_subdev *sd, struct i2c_client *client, const struct v4l2_subdev_ops *ops); /** * v4l2_i2c_subdev_addr - returns i2c client address of &struct v4l2_subdev. * * @sd: pointer to &struct v4l2_subdev * * Returns the address of an I2C sub-device */ unsigned short v4l2_i2c_subdev_addr(struct v4l2_subdev *sd); /** * v4l2_i2c_tuner_addrs - Return a list of I2C tuner addresses to probe. * * @type: type of the tuner to seek, as defined by * &enum v4l2_i2c_tuner_type. * * NOTE: Use only if the tuner addresses are unknown. */ const unsigned short *v4l2_i2c_tuner_addrs(enum v4l2_i2c_tuner_type type); /** * v4l2_i2c_subdev_unregister - Unregister a v4l2_subdev * * @sd: pointer to &struct v4l2_subdev */ void v4l2_i2c_subdev_unregister(struct v4l2_subdev *sd); #else static inline struct v4l2_subdev * v4l2_i2c_new_subdev(struct v4l2_device *v4l2_dev, struct i2c_adapter *adapter, const char *client_type, u8 addr, const unsigned short *probe_addrs) { return NULL; } static inline struct v4l2_subdev * v4l2_i2c_new_subdev_board(struct v4l2_device *v4l2_dev, struct i2c_adapter *adapter, struct i2c_board_info *info, const unsigned short *probe_addrs) { return NULL; } static inline void v4l2_i2c_subdev_set_name(struct v4l2_subdev *sd, struct i2c_client *client, const char *devname, const char *postfix) {} static inline void v4l2_i2c_subdev_init(struct v4l2_subdev *sd, struct i2c_client *client, const struct v4l2_subdev_ops *ops) {} static inline unsigned short v4l2_i2c_subdev_addr(struct v4l2_subdev *sd) { return I2C_CLIENT_END; } static inline const unsigned short * v4l2_i2c_tuner_addrs(enum v4l2_i2c_tuner_type type) { return NULL; } static inline void v4l2_i2c_subdev_unregister(struct v4l2_subdev *sd) {} #endif /* ------------------------------------------------------------------------- */ /* SPI Helper functions */ #include <linux/spi/spi.h> #if defined(CONFIG_SPI) /** * v4l2_spi_new_subdev - Load an spi module and return an initialized * &struct v4l2_subdev. * * * @v4l2_dev: pointer to &struct v4l2_device. * @ctlr: pointer to struct spi_controller. * @info: pointer to struct spi_board_info. * * returns a &struct v4l2_subdev pointer. */ struct v4l2_subdev *v4l2_spi_new_subdev(struct v4l2_device *v4l2_dev, struct spi_controller *ctlr, struct spi_board_info *info); /** * v4l2_spi_subdev_init - Initialize a v4l2_subdev with data from an * spi_device struct. * * @sd: pointer to &struct v4l2_subdev * @spi: pointer to struct spi_device. * @ops: pointer to &struct v4l2_subdev_ops */ void v4l2_spi_subdev_init(struct v4l2_subdev *sd, struct spi_device *spi, const struct v4l2_subdev_ops *ops); /** * v4l2_spi_subdev_unregister - Unregister a v4l2_subdev * * @sd: pointer to &struct v4l2_subdev */ void v4l2_spi_subdev_unregister(struct v4l2_subdev *sd); #else static inline struct v4l2_subdev * v4l2_spi_new_subdev(struct v4l2_device *v4l2_dev, struct spi_controller *ctlr, struct spi_board_info *info) { return NULL; } static inline void v4l2_spi_subdev_init(struct v4l2_subdev *sd, struct spi_device *spi, const struct v4l2_subdev_ops *ops) {} static inline void v4l2_spi_subdev_unregister(struct v4l2_subdev *sd) {} #endif /* ------------------------------------------------------------------------- */ /* * FIXME: these remaining ioctls/structs should be removed as well, but they * are still used in tuner-simple.c (TUNER_SET_CONFIG) and cx18/ivtv (RESET). * To remove these ioctls some more cleanup is needed in those modules. * * It doesn't make much sense on documenting them, as what we really want is * to get rid of them. */ /* s_config */ struct v4l2_priv_tun_config { int tuner; void *priv; }; #define TUNER_SET_CONFIG _IOW('d', 92, struct v4l2_priv_tun_config) #define VIDIOC_INT_RESET _IOW ('d', 102, u32) /* ------------------------------------------------------------------------- */ /* Miscellaneous helper functions */ /** * v4l_bound_align_image - adjust video dimensions according to * a given constraints. * * @width: pointer to width that will be adjusted if needed. * @wmin: minimum width. * @wmax: maximum width. * @walign: least significant bit on width. * @height: pointer to height that will be adjusted if needed. * @hmin: minimum height. * @hmax: maximum height. * @halign: least significant bit on height. * @salign: least significant bit for the image size (e. g. * :math:`width * height`). * * Clip an image to have @width between @wmin and @wmax, and @height between * @hmin and @hmax, inclusive. * * Additionally, the @width will be a multiple of :math:`2^{walign}`, * the @height will be a multiple of :math:`2^{halign}`, and the overall * size :math:`width * height` will be a multiple of :math:`2^{salign}`. * * .. note:: * * #. The clipping rectangle may be shrunk or enlarged to fit the alignment * constraints. * #. @wmax must not be smaller than @wmin. * #. @hmax must not be smaller than @hmin. * #. The alignments must not be so high there are no possible image * sizes within the allowed bounds. * #. @wmin and @hmin must be at least 1 (don't use 0). * #. For @walign, @halign and @salign, if you don't care about a certain * alignment, specify ``0``, as :math:`2^0 = 1` and one byte alignment * is equivalent to no alignment. * #. If you only want to adjust downward, specify a maximum that's the * same as the initial value. */ void v4l_bound_align_image(unsigned int *width, unsigned int wmin, unsigned int wmax, unsigned int walign, unsigned int *height, unsigned int hmin, unsigned int hmax, unsigned int halign, unsigned int salign); /** * v4l2_find_nearest_size_conditional - Find the nearest size among a discrete * set of resolutions contained in an array of a driver specific struct, * with conditionally exlusion of certain modes * * @array: a driver specific array of image sizes * @array_size: the length of the driver specific array of image sizes * @width_field: the name of the width field in the driver specific struct * @height_field: the name of the height field in the driver specific struct * @width: desired width * @height: desired height * @func: ignores mode if returns false * @context: context for the function * * Finds the closest resolution to minimize the width and height differences * between what requested and the supported resolutions. The size of the width * and height fields in the driver specific must equal to that of u32, i.e. four * bytes. @func is called for each mode considered, a mode is ignored if @func * returns false for it. * * Returns the best match or NULL if the length of the array is zero. */ #define v4l2_find_nearest_size_conditional(array, array_size, width_field, \ height_field, width, height, \ func, context) \ ({ \ BUILD_BUG_ON(sizeof((array)->width_field) != sizeof(u32) || \ sizeof((array)->height_field) != sizeof(u32)); \ (typeof(&(array)[0]))__v4l2_find_nearest_size_conditional( \ (array), array_size, sizeof(*(array)), \ offsetof(typeof(*(array)), width_field), \ offsetof(typeof(*(array)), height_field), \ width, height, func, context); \ }) const void * __v4l2_find_nearest_size_conditional(const void *array, size_t array_size, size_t entry_size, size_t width_offset, size_t height_offset, s32 width, s32 height, bool (*func)(const void *array, size_t index, const void *context), const void *context); /** * v4l2_find_nearest_size - Find the nearest size among a discrete set of * resolutions contained in an array of a driver specific struct * * @array: a driver specific array of image sizes * @array_size: the length of the driver specific array of image sizes * @width_field: the name of the width field in the driver specific struct * @height_field: the name of the height field in the driver specific struct * @width: desired width * @height: desired height * * Finds the closest resolution to minimize the width and height differences * between what requested and the supported resolutions. The size of the width * and height fields in the driver specific must equal to that of u32, i.e. four * bytes. * * Returns the best match or NULL if the length of the array is zero. */ #define v4l2_find_nearest_size(array, array_size, width_field, \ height_field, width, height) \ v4l2_find_nearest_size_conditional(array, array_size, width_field, \ height_field, width, height, NULL, \ NULL) /** * v4l2_g_parm_cap - helper routine for vidioc_g_parm to fill this in by * calling the get_frame_interval op of the given subdev. It only works * for V4L2_BUF_TYPE_VIDEO_CAPTURE(_MPLANE), hence the _cap in the * function name. * * @vdev: the struct video_device pointer. Used to determine the device caps. * @sd: the sub-device pointer. * @a: the VIDIOC_G_PARM argument. */ int v4l2_g_parm_cap(struct video_device *vdev, struct v4l2_subdev *sd, struct v4l2_streamparm *a); /** * v4l2_s_parm_cap - helper routine for vidioc_s_parm to fill this in by * calling the set_frame_interval op of the given subdev. It only works * for V4L2_BUF_TYPE_VIDEO_CAPTURE(_MPLANE), hence the _cap in the * function name. * * @vdev: the struct video_device pointer. Used to determine the device caps. * @sd: the sub-device pointer. * @a: the VIDIOC_S_PARM argument. */ int v4l2_s_parm_cap(struct video_device *vdev, struct v4l2_subdev *sd, struct v4l2_streamparm *a); /* Compare two v4l2_fract structs */ #define V4L2_FRACT_COMPARE(a, OP, b) \ ((u64)(a).numerator * (b).denominator OP \ (u64)(b).numerator * (a).denominator) /* ------------------------------------------------------------------------- */ /* Pixel format and FourCC helpers */ /** * enum v4l2_pixel_encoding - specifies the pixel encoding value * * @V4L2_PIXEL_ENC_UNKNOWN: Pixel encoding is unknown/un-initialized * @V4L2_PIXEL_ENC_YUV: Pixel encoding is YUV * @V4L2_PIXEL_ENC_RGB: Pixel encoding is RGB * @V4L2_PIXEL_ENC_BAYER: Pixel encoding is Bayer */ enum v4l2_pixel_encoding { V4L2_PIXEL_ENC_UNKNOWN = 0, V4L2_PIXEL_ENC_YUV = 1, V4L2_PIXEL_ENC_RGB = 2, V4L2_PIXEL_ENC_BAYER = 3, }; /** * struct v4l2_format_info - information about a V4L2 format * @format: 4CC format identifier (V4L2_PIX_FMT_*) * @pixel_enc: Pixel encoding (see enum v4l2_pixel_encoding above) * @mem_planes: Number of memory planes, which includes the alpha plane (1 to 4). * @comp_planes: Number of component planes, which includes the alpha plane (1 to 4). * @bpp: Array of per-plane bytes per pixel * @bpp_div: Array of per-plane bytes per pixel divisors to support fractional pixel sizes. * @hdiv: Horizontal chroma subsampling factor * @vdiv: Vertical chroma subsampling factor * @block_w: Per-plane macroblock pixel width (optional) * @block_h: Per-plane macroblock pixel height (optional) */ struct v4l2_format_info { u32 format; u8 pixel_enc; u8 mem_planes; u8 comp_planes; u8 bpp[4]; u8 bpp_div[4]; u8 hdiv; u8 vdiv; u8 block_w[4]; u8 block_h[4]; }; static inline bool v4l2_is_format_rgb(const struct v4l2_format_info *f) { return f && f->pixel_enc == V4L2_PIXEL_ENC_RGB; } static inline bool v4l2_is_format_yuv(const struct v4l2_format_info *f) { return f && f->pixel_enc == V4L2_PIXEL_ENC_YUV; } static inline bool v4l2_is_format_bayer(const struct v4l2_format_info *f) { return f && f->pixel_enc == V4L2_PIXEL_ENC_BAYER; } const struct v4l2_format_info *v4l2_format_info(u32 format); void v4l2_apply_frmsize_constraints(u32 *width, u32 *height, const struct v4l2_frmsize_stepwise *frmsize); int v4l2_fill_pixfmt(struct v4l2_pix_format *pixfmt, u32 pixelformat, u32 width, u32 height); int v4l2_fill_pixfmt_mp(struct v4l2_pix_format_mplane *pixfmt, u32 pixelformat, u32 width, u32 height); /** * v4l2_get_link_freq - Get link rate from transmitter * * @pad: The transmitter's media pad * @mul: The multiplier between pixel rate and link frequency. Bits per pixel on * D-PHY, samples per clock on parallel. 0 otherwise. * @div: The divisor between pixel rate and link frequency. Number of data lanes * times two on D-PHY, 1 on parallel. 0 otherwise. * * This function obtains and returns the link frequency from the transmitter * sub-device's pad. The link frequency is retrieved using the get_mbus_config * sub-device pad operation. If this fails, the function falls back to obtaining * the frequency either directly from the V4L2_CID_LINK_FREQ control if * implemented by the transmitter, or by calculating it from the pixel rate * obtained from the V4L2_CID_PIXEL_RATE control. * * Return: * * >0: Link frequency * * %-ENOENT: Link frequency or pixel rate control not found * * %-EINVAL: Invalid link frequency value */ #ifdef CONFIG_MEDIA_CONTROLLER s64 v4l2_get_link_freq(const struct media_pad *pad, unsigned int mul, unsigned int div); /** * v4l2_get_active_data_lanes - Get number of active data lanes from driver * * @pad: The transmitter's media pad. * @max_data_lanes: The maximum number of active data lanes supported by * the MIPI CSI link in hardware. * * This function is intended for obtaining the number of data lanes that are * actively being used by the driver for a MIPI CSI-2 device on a given media pad. * This information is derived from a mbus_config fetched from a device driver * using the get_mbus_config v4l2_subdev pad op. * * Return: * * >0: Number of active data lanes * * %-EINVAL: Number of active data lanes is invalid, as it exceeds the maximum * supported data lanes. */ int v4l2_get_active_data_lanes(const struct media_pad *pad, unsigned int max_data_lanes); #endif void v4l2_simplify_fraction(u32 *numerator, u32 *denominator, unsigned int n_terms, unsigned int threshold); u32 v4l2_fraction_to_interval(u32 numerator, u32 denominator); /** * v4l2_link_freq_to_bitmap - Figure out platform-supported link frequencies * @dev: The struct device * @fw_link_freqs: Array of link frequencies from firmware * @num_of_fw_link_freqs: Number of entries in @fw_link_freqs * @driver_link_freqs: Array of link frequencies supported by the driver * @num_of_driver_link_freqs: Number of entries in @driver_link_freqs * @bitmap: Bitmap of driver-supported link frequencies found in @fw_link_freqs * * This function checks which driver-supported link frequencies are enabled in * system firmware and sets the corresponding bits in @bitmap (after first * zeroing it). * * Return: * * %0: Success * * %-ENOENT: No match found between driver-supported link frequencies and * those available in firmware. * * %-ENODATA: No link frequencies were specified in firmware. */ int v4l2_link_freq_to_bitmap(struct device *dev, const u64 *fw_link_freqs, unsigned int num_of_fw_link_freqs, const s64 *driver_link_freqs, unsigned int num_of_driver_link_freqs, unsigned long *bitmap); struct clk *__devm_v4l2_sensor_clk_get(struct device *dev, const char *id, bool legacy, bool fixed_rate, unsigned long clk_rate); /** * devm_v4l2_sensor_clk_get - lookup and obtain a reference to a clock producer * for a camera sensor * * @dev: device for v4l2 sensor clock "consumer" * @id: clock consumer ID * * This function behaves the same way as devm_clk_get() except where there * is no clock producer like in ACPI-based platforms. * * For ACPI-based platforms, the function will read the "clock-frequency" * ACPI _DSD property and register a fixed-clock with the frequency indicated * in the property. * * This function also handles the special ACPI-based system case where: * * * The clock-frequency _DSD property is present. * * A reference to the clock producer is present, where the clock is provided * by a camera sensor PMIC driver (e.g. int3472/tps68470.c) * * In this case try to set the clock-frequency value to the provided clock. * * As the name indicates, this function may only be used on camera sensor * devices. This is because generally only camera sensors do need a clock to * query the frequency from, due to the requirement to configure the PLL for a * given CSI-2 interface frequency where the sensor's external clock frequency * is a factor. Additionally, the clock frequency tends to be available on ACPI * firmware based systems for camera sensors specifically (if e.g. DisCo for * Imaging compliant). * * Returns a pointer to a struct clk on success or an error pointer on failure. */ static inline struct clk * devm_v4l2_sensor_clk_get(struct device *dev, const char *id) { return __devm_v4l2_sensor_clk_get(dev, id, false, false, 0); } /** * devm_v4l2_sensor_clk_get_legacy - lookup and obtain a reference to a clock * producer for a camera sensor. * * @dev: device for v4l2 sensor clock "consumer" * @id: clock consumer ID * @fixed_rate: interpret the @clk_rate as a fixed rate or default rate * @clk_rate: the clock rate * * This function behaves the same way as devm_v4l2_sensor_clk_get() except that * it extends the behaviour on ACPI platforms to all platforms. * * The function also provides the ability to set the clock rate to a fixed * frequency by setting @fixed_rate to true and specifying the fixed frequency * in @clk_rate, or to use a default clock rate when the "clock-frequency" * property is absent by setting @fixed_rate to false and specifying the default * frequency in @clk_rate. Setting @fixed_rate to true and @clk_rate to 0 is an * error. * * This function is meant to support legacy behaviour in existing drivers only. * It must not be used in any new driver. * * Returns a pointer to a struct clk on success or an error pointer on failure. */ static inline struct clk * devm_v4l2_sensor_clk_get_legacy(struct device *dev, const char *id, bool fixed_rate, unsigned long clk_rate) { return __devm_v4l2_sensor_clk_get(dev, id, true, fixed_rate, clk_rate); } static inline u64 v4l2_buffer_get_timestamp(const struct v4l2_buffer *buf) { /* * When the timestamp comes from 32-bit user space, there may be * uninitialized data in tv_usec, so cast it to u32. * Otherwise allow invalid input for backwards compatibility. */ return buf->timestamp.tv_sec * NSEC_PER_SEC + (u32)buf->timestamp.tv_usec * NSEC_PER_USEC; } static inline void v4l2_buffer_set_timestamp(struct v4l2_buffer *buf, u64 timestamp) { struct timespec64 ts = ns_to_timespec64(timestamp); buf->timestamp.tv_sec = ts.tv_sec; buf->timestamp.tv_usec = ts.tv_nsec / NSEC_PER_USEC; } static inline bool v4l2_is_colorspace_valid(__u32 colorspace) { return colorspace > V4L2_COLORSPACE_DEFAULT && colorspace < V4L2_COLORSPACE_LAST; } static inline bool v4l2_is_xfer_func_valid(__u32 xfer_func) { return xfer_func > V4L2_XFER_FUNC_DEFAULT && xfer_func < V4L2_XFER_FUNC_LAST; } static inline bool v4l2_is_ycbcr_enc_valid(__u8 ycbcr_enc) { return ycbcr_enc > V4L2_YCBCR_ENC_DEFAULT && ycbcr_enc < V4L2_YCBCR_ENC_LAST; } static inline bool v4l2_is_hsv_enc_valid(__u8 hsv_enc) { return hsv_enc == V4L2_HSV_ENC_180 || hsv_enc == V4L2_HSV_ENC_256; } static inline bool v4l2_is_quant_valid(__u8 quantization) { return quantization == V4L2_QUANTIZATION_FULL_RANGE || quantization == V4L2_QUANTIZATION_LIM_RANGE; } #endif /* V4L2_COMMON_H_ */
