diff options
Diffstat (limited to 'drivers/gpu/drm/drm_mipi_dsi.c')
| -rw-r--r-- | drivers/gpu/drm/drm_mipi_dsi.c | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/drivers/gpu/drm/drm_mipi_dsi.c b/drivers/gpu/drm/drm_mipi_dsi.c index dfa595556320..e5184a0c2465 100644 --- a/drivers/gpu/drm/drm_mipi_dsi.c +++ b/drivers/gpu/drm/drm_mipi_dsi.c @@ -36,6 +36,8 @@ #include <drm/drm_mipi_dsi.h> #include <drm/drm_print.h> +#include <linux/media-bus-format.h> + #include <video/mipi_display.h> /** @@ -871,6 +873,41 @@ ssize_t mipi_dsi_generic_read(struct mipi_dsi_device *dsi, const void *params, EXPORT_SYMBOL(mipi_dsi_generic_read); /** + * drm_mipi_dsi_get_input_bus_fmt() - Get the required MEDIA_BUS_FMT_* based + * input pixel format for a given DSI output + * pixel format + * @dsi_format: pixel format that a DSI host needs to output + * + * Various DSI hosts can use this function during their + * &drm_bridge_funcs.atomic_get_input_bus_fmts operation to ascertain + * the MEDIA_BUS_FMT_* pixel format required as input. + * + * RETURNS: + * a 32-bit MEDIA_BUS_FMT_* value on success or 0 in case of failure. + */ +u32 drm_mipi_dsi_get_input_bus_fmt(enum mipi_dsi_pixel_format dsi_format) +{ + switch (dsi_format) { + case MIPI_DSI_FMT_RGB888: + return MEDIA_BUS_FMT_RGB888_1X24; + + case MIPI_DSI_FMT_RGB666: + return MEDIA_BUS_FMT_RGB666_1X24_CPADHI; + + case MIPI_DSI_FMT_RGB666_PACKED: + return MEDIA_BUS_FMT_RGB666_1X18; + + case MIPI_DSI_FMT_RGB565: + return MEDIA_BUS_FMT_RGB565_1X16; + + default: + /* Unsupported DSI Format */ + return 0; + } +} +EXPORT_SYMBOL(drm_mipi_dsi_get_input_bus_fmt); + +/** * mipi_dsi_dcs_write_buffer() - transmit a DCS command with payload * @dsi: DSI peripheral device * @data: buffer containing data to be transmitted |