diff options
| author | Thierry Reding <treding@nvidia.com> | 2014-10-16 13:44:02 +0200 |
|---|---|---|
| committer | Thierry Reding <treding@nvidia.com> | 2014-11-13 13:55:26 +0100 |
| commit | a52879e8d7cbeed69be5e54c69701e5edea8cc00 (patch) | |
| tree | daba30972f3fc580fb3b6c818d31500bd3be2597 /include/drm | |
| parent | 02acb76d72b3672330b6a20d2773048658b2d176 (diff) | |
drm/dsi: Add message to packet translator
This commit introduces a new function, mipi_dsi_create_packet(), which
converts from a MIPI DSI message to a MIPI DSI packet. The MIPI DSI
packet is as close to the protocol described in the DSI specification as
possible and useful in drivers that need to write a DSI packet into a
FIFO to send a message off to the peripheral.
Suggested-by: Andrzej Hajda <a.hajda@samsung.com>
Reviewed-by: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Diffstat (limited to 'include/drm')
| -rw-r--r-- | include/drm/drm_mipi_dsi.h | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/include/drm/drm_mipi_dsi.h b/include/drm/drm_mipi_dsi.h index f1a07e302559..6e3e3aadd2d7 100644 --- a/include/drm/drm_mipi_dsi.h +++ b/include/drm/drm_mipi_dsi.h @@ -47,6 +47,24 @@ bool mipi_dsi_packet_format_is_short(u8 type); bool mipi_dsi_packet_format_is_long(u8 type); /** + * struct mipi_dsi_packet - represents a MIPI DSI packet in protocol format + * @size: size (in bytes) of the packet + * @header: the four bytes that make up the header (Data ID, Word Count or + * Packet Data, and ECC) + * @payload_length: number of bytes in the payload + * @payload: a pointer to a buffer containing the payload, if any + */ +struct mipi_dsi_packet { + size_t size; + u8 header[4]; + size_t payload_length; + const u8 *payload; +}; + +int mipi_dsi_create_packet(struct mipi_dsi_packet *packet, + const struct mipi_dsi_msg *msg); + +/** * struct mipi_dsi_host_ops - DSI bus operations * @attach: attach DSI device to DSI host * @detach: detach DSI device from DSI host |