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authorThierry Reding <treding@nvidia.com>2014-10-16 13:44:02 +0200
committerThierry Reding <treding@nvidia.com>2014-11-13 13:55:26 +0100
commita52879e8d7cbeed69be5e54c69701e5edea8cc00 (patch)
treedaba30972f3fc580fb3b6c818d31500bd3be2597 /include/drm
parent02acb76d72b3672330b6a20d2773048658b2d176 (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.h18
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

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