drm: Add support for pps and compression mode command packet

After enabling DSC we need to send compression mode command packet
and pps data packet, for which 2 new data types are added
07h  Compression Mode Data Type Write , short write, 2 parameters
0Ah  PPS Long Write (word count determines number of bytes)
This patch adds support to send these packets.

Cc: David Airlie <airlied@linux.ie>
Cc: Jean-Christophe Plagniol-Villard <plagnioj@jcrosoft.com>
Cc: Tomi Valkeinen <tomi.valkeinen@ti.com>
Cc: dri-devel@lists.freedesktop.org
Cc: linux-kernel@vger.kernel.org
Cc: linux-fbdev@vger.kernel.org

Changes in v3:
- None

Signed-off-by: vkorjani <vikas.korjani@intel.com>
[seanpaul removed pps_write_buffer fn, added types to packet_format helpers]
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>
This commit is contained in:
vkorjani 2018-04-10 10:12:45 -04:00 коммит произвёл Rob Clark
Родитель 23f9455157
Коммит ea107a183b
2 изменённых файлов: 5 добавлений и 0 удалений

Просмотреть файл

@ -392,6 +392,7 @@ bool mipi_dsi_packet_format_is_short(u8 type)
case MIPI_DSI_DCS_SHORT_WRITE:
case MIPI_DSI_DCS_SHORT_WRITE_PARAM:
case MIPI_DSI_DCS_READ:
case MIPI_DSI_DCS_COMPRESSION_MODE:
case MIPI_DSI_SET_MAXIMUM_RETURN_PACKET_SIZE:
return true;
}
@ -410,6 +411,7 @@ EXPORT_SYMBOL(mipi_dsi_packet_format_is_short);
bool mipi_dsi_packet_format_is_long(u8 type)
{
switch (type) {
case MIPI_DSI_PPS_LONG_WRITE:
case MIPI_DSI_NULL_PACKET:
case MIPI_DSI_BLANKING_PACKET:
case MIPI_DSI_GENERIC_LONG_WRITE:

Просмотреть файл

@ -38,6 +38,9 @@ enum {
MIPI_DSI_DCS_READ = 0x06,
MIPI_DSI_DCS_COMPRESSION_MODE = 0x07,
MIPI_DSI_PPS_LONG_WRITE = 0x0A,
MIPI_DSI_SET_MAXIMUM_RETURN_PACKET_SIZE = 0x37,
MIPI_DSI_END_OF_TRANSMISSION = 0x08,