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Message-ID: <20241027075108.14273-3-vamsikrishna.brahmajosyula@gmail.com>
Date: Sun, 27 Oct 2024 13:21:05 +0530
From: Vamsi Krishna Brahmajosyula <vamsikrishna.brahmajosyula@...il.com>
To: maarten.lankhorst@...ux.intel.com,
mripard@...nel.org,
tzimmermann@...e.de,
airlied@...il.com,
simona@...ll.ch,
jani.nikula@...ux.intel.com
Cc: skhan@...uxfoundation.org,
dri-devel@...ts.freedesktop.org,
linux-kernel@...r.kernel.org
Subject: [PATCH 2/5] drm/edid: convert drm_parse_hdmi_forum_scds to use struct cea_db *
Address the following
FIXME: convert parsers to use struct cea_db
in the parser drm_parse_hdmi_forum_scds and related methods
cea_db contains len and then data. Appropriately change the indices
when referring to individual elements (db[n] becomes data[n-1]).
Signed-off-by: Vamsi Krishna Brahmajosyula <vamsikrishna.brahmajosyula@...il.com>
---
drivers/gpu/drm/drm_edid.c | 56 ++++++++++++++++++++------------------
1 file changed, 30 insertions(+), 26 deletions(-)
diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c
index e07e39c0caa0..f79d8fbdb62b 100644
--- a/drivers/gpu/drm/drm_edid.c
+++ b/drivers/gpu/drm/drm_edid.c
@@ -6112,45 +6112,48 @@ void drm_get_max_frl_rate(int max_frl_rate, u8 *max_lanes, u8 *max_rate_per_lane
}
static void drm_parse_ycbcr420_deep_color_info(struct drm_connector *connector,
- const u8 *db)
+ const struct cea_db *db)
{
u8 dc_mask;
struct drm_hdmi_info *hdmi = &connector->display_info.hdmi;
+ const u8 *data = cea_db_data(db);
- dc_mask = db[7] & DRM_EDID_YCBCR420_DC_MASK;
+ dc_mask = data[6] & DRM_EDID_YCBCR420_DC_MASK;
hdmi->y420_dc_modes = dc_mask;
}
static void drm_parse_dsc_info(struct drm_hdmi_dsc_cap *hdmi_dsc,
- const u8 *hf_scds)
+ const struct cea_db *db)
{
- hdmi_dsc->v_1p2 = hf_scds[11] & DRM_EDID_DSC_1P2;
+ const u8 *hf_scds = cea_db_data(db);
+
+ hdmi_dsc->v_1p2 = hf_scds[10] & 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;
+ hdmi_dsc->native_420 = hf_scds[10] & DRM_EDID_DSC_NATIVE_420;
+ hdmi_dsc->all_bpp = hf_scds[10] & DRM_EDID_DSC_ALL_BPP;
- if (hf_scds[11] & DRM_EDID_DSC_16BPC)
+ if (hf_scds[10] & DRM_EDID_DSC_16BPC)
hdmi_dsc->bpc_supported = 16;
- else if (hf_scds[11] & DRM_EDID_DSC_12BPC)
+ else if (hf_scds[10] & DRM_EDID_DSC_12BPC)
hdmi_dsc->bpc_supported = 12;
- else if (hf_scds[11] & DRM_EDID_DSC_10BPC)
+ else if (hf_scds[10] & 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;
- if (cea_db_payload_len(hf_scds) >= 12 && hf_scds[12]) {
+ if (cea_db_payload_len(db) >= 12 && hf_scds[11]) {
u8 dsc_max_slices;
u8 dsc_max_frl_rate;
- dsc_max_frl_rate = (hf_scds[12] & DRM_EDID_DSC_MAX_FRL_RATE_MASK) >> 4;
+ dsc_max_frl_rate = (hf_scds[11] & 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);
- dsc_max_slices = hf_scds[12] & DRM_EDID_DSC_MAX_SLICES;
+ dsc_max_slices = hf_scds[11] & DRM_EDID_DSC_MAX_SLICES;
switch (dsc_max_slices) {
case 1:
@@ -6188,26 +6191,27 @@ static void drm_parse_dsc_info(struct drm_hdmi_dsc_cap *hdmi_dsc,
}
}
- if (cea_db_payload_len(hf_scds) >= 13 && hf_scds[13])
- hdmi_dsc->total_chunk_kbytes = hf_scds[13] & DRM_EDID_DSC_TOTAL_CHUNK_KBYTES;
+ if (cea_db_payload_len(db) >= 13 && hf_scds[12])
+ hdmi_dsc->total_chunk_kbytes = hf_scds[12] & DRM_EDID_DSC_TOTAL_CHUNK_KBYTES;
}
/* Sink Capability Data Structure */
static void drm_parse_hdmi_forum_scds(struct drm_connector *connector,
- const u8 *hf_scds)
+ const struct cea_db *db)
{
struct drm_display_info *info = &connector->display_info;
struct drm_hdmi_info *hdmi = &info->hdmi;
struct drm_hdmi_dsc_cap *hdmi_dsc = &hdmi->dsc_cap;
+ const u8 *hf_scds = cea_db_data(db);
int max_tmds_clock = 0;
u8 max_frl_rate = 0;
bool dsc_support = false;
info->has_hdmi_infoframe = true;
- if (hf_scds[6] & 0x80) {
+ if (hf_scds[5] & 0x80) {
hdmi->scdc.supported = true;
- if (hf_scds[6] & 0x40)
+ if (hf_scds[5] & 0x40)
hdmi->scdc.read_request = true;
}
@@ -6220,11 +6224,11 @@ static void drm_parse_hdmi_forum_scds(struct drm_connector *connector,
* Lets check it out.
*/
- if (hf_scds[5]) {
+ if (hf_scds[4]) {
struct drm_scdc *scdc = &hdmi->scdc;
/* max clock is 5000 KHz times block value */
- max_tmds_clock = hf_scds[5] * 5000;
+ max_tmds_clock = hf_scds[4] * 5000;
if (max_tmds_clock > 340000) {
info->max_tmds_clock = max_tmds_clock;
@@ -6234,21 +6238,21 @@ static void drm_parse_hdmi_forum_scds(struct drm_connector *connector,
scdc->scrambling.supported = true;
/* Few sinks support scrambling for clocks < 340M */
- if ((hf_scds[6] & 0x8))
+ if ((hf_scds[5] & 0x8))
scdc->scrambling.low_rates = true;
}
}
- if (hf_scds[7]) {
- max_frl_rate = (hf_scds[7] & DRM_EDID_MAX_FRL_RATE_MASK) >> 4;
+ if (hf_scds[6]) {
+ max_frl_rate = (hf_scds[6] & DRM_EDID_MAX_FRL_RATE_MASK) >> 4;
drm_get_max_frl_rate(max_frl_rate, &hdmi->max_lanes,
&hdmi->max_frl_rate_per_lane);
}
- drm_parse_ycbcr420_deep_color_info(connector, hf_scds);
+ drm_parse_ycbcr420_deep_color_info(connector, db);
- if (cea_db_payload_len(hf_scds) >= 11 && hf_scds[11]) {
- drm_parse_dsc_info(hdmi_dsc, hf_scds);
+ if (cea_db_payload_len(db) >= 11 && hf_scds[10]) {
+ drm_parse_dsc_info(hdmi_dsc, db);
dsc_support = true;
}
@@ -6417,7 +6421,7 @@ static void drm_parse_cea_ext(struct drm_connector *connector,
drm_parse_hdmi_vsdb_video(connector, db);
else if (cea_db_is_hdmi_forum_vsdb(db) ||
cea_db_is_hdmi_forum_scdb(db))
- drm_parse_hdmi_forum_scds(connector, data);
+ drm_parse_hdmi_forum_scds(connector, db);
else if (cea_db_is_microsoft_vsdb(db))
drm_parse_microsoft_vsdb(connector, data);
else if (cea_db_is_y420cmdb(db))
--
2.47.0
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