diff options
Diffstat (limited to 'include/media/v4l2-mediabus.h')
| -rw-r--r-- | include/media/v4l2-mediabus.h | 127 |
1 files changed, 98 insertions, 29 deletions
diff --git a/include/media/v4l2-mediabus.h b/include/media/v4l2-mediabus.h index 45f88f0248c4..f67a74daf799 100644 --- a/include/media/v4l2-mediabus.h +++ b/include/media/v4l2-mediabus.h @@ -11,9 +11,31 @@ #include <linux/v4l2-mediabus.h> #include <linux/bitops.h> +/* + * How to use the V4L2_MBUS_* flags: + * Flags are defined for each of the possible states and values of a media + * bus configuration parameter. One and only one bit of each group of flags + * shall be set by the users of the v4l2_subdev_pad_ops.get_mbus_config + * operation to ensure that no conflicting settings are specified when + * reporting the media bus configuration. For example, it is invalid to set or + * clear both the V4L2_MBUS_HSYNC_ACTIVE_HIGH and the + * V4L2_MBUS_HSYNC_ACTIVE_LOW flag at the same time. Instead either flag + * V4L2_MBUS_HSYNC_ACTIVE_HIGH or flag V4L2_MBUS_HSYNC_ACTIVE_LOW shall be set. + * + * TODO: replace the existing V4L2_MBUS_* flags with structures of fields + * to avoid conflicting settings. + * + * In example: + * #define V4L2_MBUS_HSYNC_ACTIVE_HIGH BIT(2) + * #define V4L2_MBUS_HSYNC_ACTIVE_LOW BIT(3) + * will be replaced by a field whose value reports the intended active state of + * the signal: + * unsigned int v4l2_mbus_hsync_active : 1; + */ + /* Parallel flags */ /* - * Can the client run in master or in slave mode. By "Master mode" an operation + * The client runs in master or in slave mode. By "Master mode" an operation * mode is meant, when the client (e.g., a camera sensor) is producing * horizontal and vertical synchronisation. In "Slave mode" the host is * providing these signals to the slave. @@ -45,28 +67,57 @@ #define V4L2_MBUS_DATA_ENABLE_LOW BIT(15) /* Serial flags */ -/* How many lanes the client can use */ -#define V4L2_MBUS_CSI2_1_LANE BIT(0) -#define V4L2_MBUS_CSI2_2_LANE BIT(1) -#define V4L2_MBUS_CSI2_3_LANE BIT(2) -#define V4L2_MBUS_CSI2_4_LANE BIT(3) -/* On which channels it can send video data */ -#define V4L2_MBUS_CSI2_CHANNEL_0 BIT(4) -#define V4L2_MBUS_CSI2_CHANNEL_1 BIT(5) -#define V4L2_MBUS_CSI2_CHANNEL_2 BIT(6) -#define V4L2_MBUS_CSI2_CHANNEL_3 BIT(7) -/* Does it support only continuous or also non-continuous clock mode */ -#define V4L2_MBUS_CSI2_CONTINUOUS_CLOCK BIT(8) -#define V4L2_MBUS_CSI2_NONCONTINUOUS_CLOCK BIT(9) - -#define V4L2_MBUS_CSI2_LANES (V4L2_MBUS_CSI2_1_LANE | \ - V4L2_MBUS_CSI2_2_LANE | \ - V4L2_MBUS_CSI2_3_LANE | \ - V4L2_MBUS_CSI2_4_LANE) -#define V4L2_MBUS_CSI2_CHANNELS (V4L2_MBUS_CSI2_CHANNEL_0 | \ - V4L2_MBUS_CSI2_CHANNEL_1 | \ - V4L2_MBUS_CSI2_CHANNEL_2 | \ - V4L2_MBUS_CSI2_CHANNEL_3) +/* Clock non-continuous mode support. */ +#define V4L2_MBUS_CSI2_NONCONTINUOUS_CLOCK BIT(0) + +#define V4L2_MBUS_CSI2_MAX_DATA_LANES 8 + +/** + * struct v4l2_mbus_config_mipi_csi2 - MIPI CSI-2 data bus configuration + * @flags: media bus (V4L2_MBUS_*) flags + * @data_lanes: an array of physical data lane indexes + * @clock_lane: physical lane index of the clock lane + * @num_data_lanes: number of data lanes + * @lane_polarities: polarity of the lanes. The order is the same of + * the physical lanes. + */ +struct v4l2_mbus_config_mipi_csi2 { + unsigned int flags; + unsigned char data_lanes[V4L2_MBUS_CSI2_MAX_DATA_LANES]; + unsigned char clock_lane; + unsigned char num_data_lanes; + bool lane_polarities[1 + V4L2_MBUS_CSI2_MAX_DATA_LANES]; +}; + +/** + * struct v4l2_mbus_config_parallel - parallel data bus configuration + * @flags: media bus (V4L2_MBUS_*) flags + * @bus_width: bus width in bits + * @data_shift: data shift in bits + */ +struct v4l2_mbus_config_parallel { + unsigned int flags; + unsigned char bus_width; + unsigned char data_shift; +}; + +/** + * struct v4l2_mbus_config_mipi_csi1 - CSI-1/CCP2 data bus configuration + * @clock_inv: polarity of clock/strobe signal + * false - not inverted, true - inverted + * @strobe: false - data/clock, true - data/strobe + * @lane_polarity: the polarities of the clock (index 0) and data lanes + * index (1) + * @data_lane: the number of the data lane + * @clock_lane: the number of the clock lane + */ +struct v4l2_mbus_config_mipi_csi1 { + unsigned char clock_inv:1; + unsigned char strobe:1; + bool lane_polarity[2]; + unsigned char data_lane; + unsigned char clock_lane; +}; /** * enum v4l2_mbus_type - media bus type @@ -78,6 +129,8 @@ * @V4L2_MBUS_CCP2: CCP2 (Compact Camera Port 2) * @V4L2_MBUS_CSI2_DPHY: MIPI CSI-2 serial interface, with D-PHY * @V4L2_MBUS_CSI2_CPHY: MIPI CSI-2 serial interface, with C-PHY + * @V4L2_MBUS_DPI: MIPI VIDEO DPI interface + * @V4L2_MBUS_INVALID: invalid bus type (keep as last) */ enum v4l2_mbus_type { V4L2_MBUS_UNKNOWN, @@ -87,16 +140,32 @@ enum v4l2_mbus_type { V4L2_MBUS_CCP2, V4L2_MBUS_CSI2_DPHY, V4L2_MBUS_CSI2_CPHY, + V4L2_MBUS_DPI, + V4L2_MBUS_INVALID, }; /** * struct v4l2_mbus_config - media bus configuration - * @type: in: interface type - * @flags: in / out: configuration flags, depending on @type + * @type: interface type + * @bus: bus configuration data structure + * @bus.parallel: embedded &struct v4l2_mbus_config_parallel. + * Used if the bus is parallel or BT.656. + * @bus.mipi_csi1: embedded &struct v4l2_mbus_config_mipi_csi1. + * Used if the bus is MIPI Alliance's Camera Serial + * Interface version 1 (MIPI CSI1) or Standard + * Mobile Imaging Architecture's Compact Camera Port 2 + * (SMIA CCP2). + * @bus.mipi_csi2: embedded &struct v4l2_mbus_config_mipi_csi2. + * Used if the bus is MIPI Alliance's Camera Serial + * Interface version 2 (MIPI CSI2). */ struct v4l2_mbus_config { enum v4l2_mbus_type type; - unsigned int flags; + union { + struct v4l2_mbus_config_parallel parallel; + struct v4l2_mbus_config_mipi_csi1 mipi_csi1; + struct v4l2_mbus_config_mipi_csi2 mipi_csi2; + } bus; }; /** @@ -120,7 +189,7 @@ v4l2_fill_pix_format(struct v4l2_pix_format *pix_fmt, } /** - * v4l2_fill_pix_format - Ancillary routine that fills a &struct + * v4l2_fill_mbus_format - Ancillary routine that fills a &struct * v4l2_mbus_framefmt from a &struct v4l2_pix_format and a * data format code. * @@ -143,7 +212,7 @@ static inline void v4l2_fill_mbus_format(struct v4l2_mbus_framefmt *mbus_fmt, } /** - * v4l2_fill_pix_format - Ancillary routine that fills a &struct + * v4l2_fill_pix_format_mplane - Ancillary routine that fills a &struct * v4l2_pix_format_mplane fields from a media bus structure. * * @pix_mp_fmt: pointer to &struct v4l2_pix_format_mplane to be filled @@ -163,7 +232,7 @@ v4l2_fill_pix_format_mplane(struct v4l2_pix_format_mplane *pix_mp_fmt, } /** - * v4l2_fill_pix_format - Ancillary routine that fills a &struct + * v4l2_fill_mbus_format_mplane - Ancillary routine that fills a &struct * v4l2_mbus_framefmt from a &struct v4l2_pix_format_mplane. * * @mbus_fmt: pointer to &struct v4l2_mbus_framefmt to be filled |