diff options
Diffstat (limited to 'include/media/v4l2-mediabus.h')
| -rw-r--r-- | include/media/v4l2-mediabus.h | 252 |
1 files changed, 207 insertions, 45 deletions
diff --git a/include/media/v4l2-mediabus.h b/include/media/v4l2-mediabus.h index 34cc99e093ef..24c738cd7894 100644 --- a/include/media/v4l2-mediabus.h +++ b/include/media/v4l2-mediabus.h @@ -1,94 +1,207 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ /* * Media Bus API header * * Copyright (C) 2009, Guennadi Liakhovetski <g.liakhovetski@gmx.de> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. */ #ifndef V4L2_MEDIABUS_H #define V4L2_MEDIABUS_H #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. */ -#define V4L2_MBUS_MASTER (1 << 0) -#define V4L2_MBUS_SLAVE (1 << 1) +#define V4L2_MBUS_MASTER BIT(0) +#define V4L2_MBUS_SLAVE BIT(1) /* * Signal polarity flags * Note: in BT.656 mode HSYNC, FIELD, and VSYNC are unused * V4L2_MBUS_[HV]SYNC* flags should be also used for specifying * configuration of hardware that uses [HV]REF signals */ -#define V4L2_MBUS_HSYNC_ACTIVE_HIGH (1 << 2) -#define V4L2_MBUS_HSYNC_ACTIVE_LOW (1 << 3) -#define V4L2_MBUS_VSYNC_ACTIVE_HIGH (1 << 4) -#define V4L2_MBUS_VSYNC_ACTIVE_LOW (1 << 5) -#define V4L2_MBUS_PCLK_SAMPLE_RISING (1 << 6) -#define V4L2_MBUS_PCLK_SAMPLE_FALLING (1 << 7) -#define V4L2_MBUS_DATA_ACTIVE_HIGH (1 << 8) -#define V4L2_MBUS_DATA_ACTIVE_LOW (1 << 9) +#define V4L2_MBUS_HSYNC_ACTIVE_HIGH BIT(2) +#define V4L2_MBUS_HSYNC_ACTIVE_LOW BIT(3) +#define V4L2_MBUS_VSYNC_ACTIVE_HIGH BIT(4) +#define V4L2_MBUS_VSYNC_ACTIVE_LOW BIT(5) +#define V4L2_MBUS_PCLK_SAMPLE_RISING BIT(6) +#define V4L2_MBUS_PCLK_SAMPLE_FALLING BIT(7) +#define V4L2_MBUS_PCLK_SAMPLE_DUALEDGE BIT(8) +#define V4L2_MBUS_DATA_ACTIVE_HIGH BIT(9) +#define V4L2_MBUS_DATA_ACTIVE_LOW BIT(10) /* FIELD = 0/1 - Field1 (odd)/Field2 (even) */ -#define V4L2_MBUS_FIELD_EVEN_HIGH (1 << 10) +#define V4L2_MBUS_FIELD_EVEN_HIGH BIT(11) /* FIELD = 1/0 - Field1 (odd)/Field2 (even) */ -#define V4L2_MBUS_FIELD_EVEN_LOW (1 << 11) +#define V4L2_MBUS_FIELD_EVEN_LOW BIT(12) /* Active state of Sync-on-green (SoG) signal, 0/1 for LOW/HIGH respectively. */ -#define V4L2_MBUS_VIDEO_SOG_ACTIVE_HIGH (1 << 12) -#define V4L2_MBUS_VIDEO_SOG_ACTIVE_LOW (1 << 13) +#define V4L2_MBUS_VIDEO_SOG_ACTIVE_HIGH BIT(13) +#define V4L2_MBUS_VIDEO_SOG_ACTIVE_LOW BIT(14) +#define V4L2_MBUS_DATA_ENABLE_HIGH BIT(15) +#define V4L2_MBUS_DATA_ENABLE_LOW BIT(16) /* Serial flags */ -/* How many lanes the client can use */ -#define V4L2_MBUS_CSI2_1_LANE (1 << 0) -#define V4L2_MBUS_CSI2_2_LANE (1 << 1) -#define V4L2_MBUS_CSI2_3_LANE (1 << 2) -#define V4L2_MBUS_CSI2_4_LANE (1 << 3) -/* On which channels it can send video data */ -#define V4L2_MBUS_CSI2_CHANNEL_0 (1 << 4) -#define V4L2_MBUS_CSI2_CHANNEL_1 (1 << 5) -#define V4L2_MBUS_CSI2_CHANNEL_2 (1 << 6) -#define V4L2_MBUS_CSI2_CHANNEL_3 (1 << 7) -/* Does it support only continuous or also non-continuous clock mode */ -#define V4L2_MBUS_CSI2_CONTINUOUS_CLOCK (1 << 8) -#define V4L2_MBUS_CSI2_NONCONTINUOUS_CLOCK (1 << 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 + +/** + * enum v4l2_mbus_csi2_cphy_line_orders_type - CSI-2 C-PHY line order + * @V4L2_MBUS_CSI2_CPHY_LINE_ORDER_ABC: C-PHY line order ABC (default) + * @V4L2_MBUS_CSI2_CPHY_LINE_ORDER_ACB: C-PHY line order ACB + * @V4L2_MBUS_CSI2_CPHY_LINE_ORDER_BAC: C-PHY line order BAC + * @V4L2_MBUS_CSI2_CPHY_LINE_ORDER_BCA: C-PHY line order BCA + * @V4L2_MBUS_CSI2_CPHY_LINE_ORDER_CAB: C-PHY line order CAB + * @V4L2_MBUS_CSI2_CPHY_LINE_ORDER_CBA: C-PHY line order CBA + */ +enum v4l2_mbus_csi2_cphy_line_orders_type { + V4L2_MBUS_CSI2_CPHY_LINE_ORDER_ABC, + V4L2_MBUS_CSI2_CPHY_LINE_ORDER_ACB, + V4L2_MBUS_CSI2_CPHY_LINE_ORDER_BAC, + V4L2_MBUS_CSI2_CPHY_LINE_ORDER_BCA, + V4L2_MBUS_CSI2_CPHY_LINE_ORDER_CAB, + V4L2_MBUS_CSI2_CPHY_LINE_ORDER_CBA, +}; + +/** + * 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. + * @line_orders: line order of the data 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]; + enum v4l2_mbus_csi2_cphy_line_orders_type line_orders[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 + * @V4L2_MBUS_UNKNOWN: unknown bus type, no V4L2 mediabus configuration * @V4L2_MBUS_PARALLEL: parallel interface with hsync and vsync * @V4L2_MBUS_BT656: parallel interface with embedded synchronisation, can * also be used for BT.1120 - * @V4L2_MBUS_CSI2: MIPI CSI-2 serial interface + * @V4L2_MBUS_CSI1: MIPI CSI-1 serial interface + * @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, V4L2_MBUS_PARALLEL, V4L2_MBUS_BT656, - V4L2_MBUS_CSI2, + V4L2_MBUS_CSI1, + 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 + * @link_freq: The link frequency. See also V4L2_CID_LINK_FREQ control. + * @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; + u64 link_freq; + union { + struct v4l2_mbus_config_parallel parallel; + struct v4l2_mbus_config_mipi_csi1 mipi_csi1; + struct v4l2_mbus_config_mipi_csi2 mipi_csi2; + } bus; }; -static inline void v4l2_fill_pix_format(struct v4l2_pix_format *pix_fmt, - const struct v4l2_mbus_framefmt *mbus_fmt) +/** + * v4l2_fill_pix_format - Ancillary routine that fills a &struct + * v4l2_pix_format fields from a &struct v4l2_mbus_framefmt. + * + * @pix_fmt: pointer to &struct v4l2_pix_format to be filled + * @mbus_fmt: pointer to &struct v4l2_mbus_framefmt to be used as model + */ +static inline void +v4l2_fill_pix_format(struct v4l2_pix_format *pix_fmt, + const struct v4l2_mbus_framefmt *mbus_fmt) { pix_fmt->width = mbus_fmt->width; pix_fmt->height = mbus_fmt->height; @@ -99,8 +212,17 @@ static inline void v4l2_fill_pix_format(struct v4l2_pix_format *pix_fmt, pix_fmt->xfer_func = mbus_fmt->xfer_func; } +/** + * v4l2_fill_mbus_format - Ancillary routine that fills a &struct + * v4l2_mbus_framefmt from a &struct v4l2_pix_format and a + * data format code. + * + * @mbus_fmt: pointer to &struct v4l2_mbus_framefmt to be filled + * @pix_fmt: pointer to &struct v4l2_pix_format to be used as model + * @code: data format code (from &enum v4l2_mbus_pixelcode) + */ static inline void v4l2_fill_mbus_format(struct v4l2_mbus_framefmt *mbus_fmt, - const struct v4l2_pix_format *pix_fmt, + const struct v4l2_pix_format *pix_fmt, u32 code) { mbus_fmt->width = pix_fmt->width; @@ -113,4 +235,44 @@ static inline void v4l2_fill_mbus_format(struct v4l2_mbus_framefmt *mbus_fmt, mbus_fmt->code = code; } +/** + * 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 + * @mbus_fmt: pointer to &struct v4l2_mbus_framefmt to be used as model + */ +static inline void +v4l2_fill_pix_format_mplane(struct v4l2_pix_format_mplane *pix_mp_fmt, + const struct v4l2_mbus_framefmt *mbus_fmt) +{ + pix_mp_fmt->width = mbus_fmt->width; + pix_mp_fmt->height = mbus_fmt->height; + pix_mp_fmt->field = mbus_fmt->field; + pix_mp_fmt->colorspace = mbus_fmt->colorspace; + pix_mp_fmt->ycbcr_enc = mbus_fmt->ycbcr_enc; + pix_mp_fmt->quantization = mbus_fmt->quantization; + pix_mp_fmt->xfer_func = mbus_fmt->xfer_func; +} + +/** + * 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 + * @pix_mp_fmt: pointer to &struct v4l2_pix_format_mplane to be used as model + */ +static inline void +v4l2_fill_mbus_format_mplane(struct v4l2_mbus_framefmt *mbus_fmt, + const struct v4l2_pix_format_mplane *pix_mp_fmt) +{ + mbus_fmt->width = pix_mp_fmt->width; + mbus_fmt->height = pix_mp_fmt->height; + mbus_fmt->field = pix_mp_fmt->field; + mbus_fmt->colorspace = pix_mp_fmt->colorspace; + mbus_fmt->ycbcr_enc = pix_mp_fmt->ycbcr_enc; + mbus_fmt->quantization = pix_mp_fmt->quantization; + mbus_fmt->xfer_func = pix_mp_fmt->xfer_func; +} + #endif |