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>

diff --git a/drivers/gpu/drm/drm_mipi_dsi.c b/drivers/gpu/drm/drm_mipi_dsi.c
index bc73b7f..80b7550 100644 (file)
--- a/drivers/gpu/drm/drm_mipi_dsi.c
+++ b/drivers/gpu/drm/drm_mipi_dsi.c
@@ -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:

diff --git a/include/video/mipi_display.h b/include/video/mipi_display.h
index 19aa65a..49a53ef 100644 (file)
--- a/include/video/mipi_display.h
+++ b/include/video/mipi_display.h
@@ -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,