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drm/edid: Split DSC parsing into separate function

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Move the DSC parsing logic into separate function.

v2: Rebase.

Signed-off-by: Ankit Nautiyal <ankit.k.nautiyal@intel.com>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220916100551.2531750-3-ankit.k.nautiyal@intel.com
This commit is contained in:
Ankit Nautiyal
2022-09-16 15:35:49 +05:30
committed by Jani Nikula
parent 18feaf6d07
commit 5e706c4db9
1 changed files with 68 additions and 58 deletions
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126
drivers/gpu/drm/drm_edid.c
View File

@@ -5752,6 +5752,73 @@ static void drm_parse_ycbcr420_deep_color_info(struct drm_connector *connector,
hdmi->y420_dc_modes = dc_mask;
}
static void drm_parse_dsc_info(struct drm_hdmi_dsc_cap *hdmi_dsc,
const u8 *hf_scds)
{
u8 dsc_max_slices;
u8 dsc_max_frl_rate;
hdmi_dsc->v_1p2 = hf_scds[11] & DRM_EDID_DSC_1P2;
if (!hdmi_dsc->v_1p2)
return;
hdmi_dsc->native_420 = hf_scds[11] & DRM_EDID_DSC_NATIVE_420;
hdmi_dsc->all_bpp = hf_scds[11] & DRM_EDID_DSC_ALL_BPP;
if (hf_scds[11] & DRM_EDID_DSC_16BPC)
hdmi_dsc->bpc_supported = 16;
else if (hf_scds[11] & DRM_EDID_DSC_12BPC)
hdmi_dsc->bpc_supported = 12;
else if (hf_scds[11] & DRM_EDID_DSC_10BPC)
hdmi_dsc->bpc_supported = 10;
else
/* Supports min 8 BPC if DSC 1.2 is supported*/
hdmi_dsc->bpc_supported = 8;
dsc_max_frl_rate = (hf_scds[12] & DRM_EDID_DSC_MAX_FRL_RATE_MASK) >> 4;
drm_get_max_frl_rate(dsc_max_frl_rate, &hdmi_dsc->max_lanes,
&hdmi_dsc->max_frl_rate_per_lane);
hdmi_dsc->total_chunk_kbytes = hf_scds[13] & DRM_EDID_DSC_TOTAL_CHUNK_KBYTES;
dsc_max_slices = hf_scds[12] & DRM_EDID_DSC_MAX_SLICES;
switch (dsc_max_slices) {
case 1:
hdmi_dsc->max_slices = 1;
hdmi_dsc->clk_per_slice = 340;
break;
case 2:
hdmi_dsc->max_slices = 2;
hdmi_dsc->clk_per_slice = 340;
break;
case 3:
hdmi_dsc->max_slices = 4;
hdmi_dsc->clk_per_slice = 340;
break;
case 4:
hdmi_dsc->max_slices = 8;
hdmi_dsc->clk_per_slice = 340;
break;
case 5:
hdmi_dsc->max_slices = 8;
hdmi_dsc->clk_per_slice = 400;
break;
case 6:
hdmi_dsc->max_slices = 12;
hdmi_dsc->clk_per_slice = 400;
break;
case 7:
hdmi_dsc->max_slices = 16;
hdmi_dsc->clk_per_slice = 400;
break;
case 0:
default:
hdmi_dsc->max_slices = 0;
hdmi_dsc->clk_per_slice = 0;
}
}
/* Sink Capability Data Structure */
static void drm_parse_hdmi_forum_scds(struct drm_connector *connector,
const u8 *hf_scds)
@@ -5798,71 +5865,14 @@ static void drm_parse_hdmi_forum_scds(struct drm_connector *connector,
if (hf_scds[7]) {
u8 max_frl_rate;
u8 dsc_max_frl_rate;
u8 dsc_max_slices;
struct drm_hdmi_dsc_cap *hdmi_dsc = &hdmi->dsc_cap;
DRM_DEBUG_KMS("hdmi_21 sink detected. parsing edid\n");
max_frl_rate = (hf_scds[7] & DRM_EDID_MAX_FRL_RATE_MASK) >> 4;
drm_get_max_frl_rate(max_frl_rate, &hdmi->max_lanes,
&hdmi->max_frl_rate_per_lane);
hdmi_dsc->v_1p2 = hf_scds[11] & DRM_EDID_DSC_1P2;
if (hdmi_dsc->v_1p2) {
hdmi_dsc->native_420 = hf_scds[11] & DRM_EDID_DSC_NATIVE_420;
hdmi_dsc->all_bpp = hf_scds[11] & DRM_EDID_DSC_ALL_BPP;
if (hf_scds[11] & DRM_EDID_DSC_16BPC)
hdmi_dsc->bpc_supported = 16;
else if (hf_scds[11] & DRM_EDID_DSC_12BPC)
hdmi_dsc->bpc_supported = 12;
else if (hf_scds[11] & DRM_EDID_DSC_10BPC)
hdmi_dsc->bpc_supported = 10;
else
/* Supports min 8 BPC if DSC 1.2 is supported*/
hdmi_dsc->bpc_supported = 8;
dsc_max_frl_rate = (hf_scds[12] & DRM_EDID_DSC_MAX_FRL_RATE_MASK) >> 4;
drm_get_max_frl_rate(dsc_max_frl_rate, &hdmi_dsc->max_lanes,
&hdmi_dsc->max_frl_rate_per_lane);
hdmi_dsc->total_chunk_kbytes = hf_scds[13] & DRM_EDID_DSC_TOTAL_CHUNK_KBYTES;
dsc_max_slices = hf_scds[12] & DRM_EDID_DSC_MAX_SLICES;
switch (dsc_max_slices) {
case 1:
hdmi_dsc->max_slices = 1;
hdmi_dsc->clk_per_slice = 340;
break;
case 2:
hdmi_dsc->max_slices = 2;
hdmi_dsc->clk_per_slice = 340;
break;
case 3:
hdmi_dsc->max_slices = 4;
hdmi_dsc->clk_per_slice = 340;
break;
case 4:
hdmi_dsc->max_slices = 8;
hdmi_dsc->clk_per_slice = 340;
break;
case 5:
hdmi_dsc->max_slices = 8;
hdmi_dsc->clk_per_slice = 400;
break;
case 6:
hdmi_dsc->max_slices = 12;
hdmi_dsc->clk_per_slice = 400;
break;
case 7:
hdmi_dsc->max_slices = 16;
hdmi_dsc->clk_per_slice = 400;
break;
case 0:
default:
hdmi_dsc->max_slices = 0;
hdmi_dsc->clk_per_slice = 0;
}
}
drm_parse_dsc_info(hdmi_dsc, hf_scds);
}
drm_parse_ycbcr420_deep_color_info(connector, hf_scds);