samsung-sm8650/android_kernel_samsung_sm8650-modules
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

disp: msm: dsi: add widebus support for DSI

Browse Source 
From Lahaina onwards, for compressed DSI output, widebus should be enabled.
In widebus mode, 6 bytes of data are transmitted per pclk.
For uncompressed output, widebus must be disabled to transmit 3 bytes
of uncompressed data per pclk.

Change-Id: I7fc0bdb2e1678152d57b4cbb8295063a2ba8ae73
Signed-off-by: Rajkumar Subbiah <rsubbia@codeaurora.org>
This commit is contained in:
Rajkumar Subbiah
2020-03-03 17:34:20 -05:00
parent c0d4857a81
commit 56e041919c
10 changed files with 96 additions and 25 deletions
Download Patch File Download Diff File Expand all files Collapse all files

21
msm/dsi/dsi_drm.c
View File

@@ -58,6 +58,9 @@ static void convert_to_dsi_mode(const struct drm_display_mode *drm_mode,
if (dsi_mode->priv_info) {
dsi_mode->timing.dsc_enabled = dsi_mode->priv_info->dsc_enabled;
dsi_mode->timing.dsc = &dsi_mode->priv_info->dsc;
dsi_mode->timing.vdc_enabled = dsi_mode->priv_info->vdc_enabled;
dsi_mode->timing.vdc = &dsi_mode->priv_info->vdc;
dsi_mode->timing.pclk_scale = dsi_mode->priv_info->pclk_scale;
}
if (msm_is_mode_seamless(drm_mode))
@@ -470,7 +473,6 @@ int dsi_conn_get_mode_info(struct drm_connector *connector,
{
struct dsi_display_mode dsi_mode;
struct dsi_mode_info *timing;
int chroma_format;
int src_bpp, tar_bpp;
if (!drm_mode || !mode_info)
@@ -497,26 +499,23 @@ int dsi_conn_get_mode_info(struct drm_connector *connector,
sizeof(struct msm_display_topology));
mode_info->comp_info.comp_type = MSM_DISPLAY_COMPRESSION_NONE;
if (dsi_mode.priv_info->dsc_enabled) {
chroma_format = dsi_mode.priv_info->dsc.chroma_format;
mode_info->comp_info.comp_type = MSM_DISPLAY_COMPRESSION_DSC;
memcpy(&mode_info->comp_info.dsc_info, &dsi_mode.priv_info->dsc,
sizeof(dsi_mode.priv_info->dsc));
tar_bpp = dsi_mode.priv_info->dsc.config.bits_per_pixel >> 4;
src_bpp = msm_get_src_bpc(chroma_format,
dsi_mode.priv_info->dsc.config.bits_per_component);
mode_info->comp_info.comp_ratio = mult_frac(1, src_bpp,
tar_bpp);
} else if (dsi_mode.priv_info->vdc_enabled) {
chroma_format = dsi_mode.priv_info->vdc.chroma_format;
mode_info->comp_info.comp_type = MSM_DISPLAY_COMPRESSION_VDC;
memcpy(&mode_info->comp_info.vdc_info, &dsi_mode.priv_info->vdc,
sizeof(dsi_mode.priv_info->vdc));
tar_bpp = dsi_mode.priv_info->vdc.bits_per_pixel >> 4;
src_bpp = msm_get_src_bpc(chroma_format,
dsi_mode.priv_info->vdc.bits_per_component);
}
if (mode_info->comp_info.comp_type) {
tar_bpp = dsi_mode.priv_info->pclk_scale.numer;
src_bpp = dsi_mode.priv_info->pclk_scale.denom;
mode_info->comp_info.comp_ratio = mult_frac(1, src_bpp,
tar_bpp);
mode_info->wide_bus_en = dsi_mode.priv_info->widebus_support;
}
if (dsi_mode.priv_info->roi_caps.enabled) {