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drm/rockchip: drv: Remove parse_edid_forum_vsdb

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The HDMI spec 10.3.2 talks about SCDS, Sink Capability Data
Structure, exposed via HF-VSDB or HF-SCDB. The actual content
of the them is same. So it needs only one parse function.

Change-Id: I61459b6d21d7e0666c1561bb2ad41729e0d00a49
Signed-off-by: Algea Cao <algea.cao@rock-chips.com>
This commit is contained in:
Algea Cao
2025-02-27 11:43:57 +08:00
committed by Tao Huang
parent 5f5900c350
commit 7915220fed
1 changed files with 1 additions and 85 deletions
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86
drivers/gpu/drm/rockchip/rockchip_drm_drv.c
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@@ -891,87 +891,6 @@ void get_max_frl_rate(int max_frl_rate, u8 *max_lanes, u8 *max_rate_per_lane)
#define EDID_DSC_TOTAL_CHUNK_KBYTES 0x3f
#define EDID_MAX_FRL_RATE_MASK 0xf0
static
void parse_edid_forum_vsdb(struct rockchip_drm_dsc_cap *dsc_cap,
u8 *max_frl_rate_per_lane, u8 *max_lanes, u8 *add_func,
const u8 *hf_vsdb)
{
u8 max_frl_rate;
u8 dsc_max_frl_rate;
u8 dsc_max_slices;
if (!hf_vsdb[7])
return;
DRM_DEBUG_KMS("hdmi_21 sink detected. parsing edid\n");
max_frl_rate = (hf_vsdb[7] & EDID_MAX_FRL_RATE_MASK) >> 4;
get_max_frl_rate(max_frl_rate, max_lanes,
max_frl_rate_per_lane);
*add_func = hf_vsdb[8];
if (cea_db_payload_len(hf_vsdb) < 13)
return;
dsc_cap->v_1p2 = hf_vsdb[11] & EDID_DSC_1P2;
if (!dsc_cap->v_1p2)
return;
dsc_cap->native_420 = hf_vsdb[11] & EDID_DSC_NATIVE_420;
dsc_cap->all_bpp = hf_vsdb[11] & EDID_DSC_ALL_BPP;
if (hf_vsdb[11] & EDID_DSC_16BPC)
dsc_cap->bpc_supported = 16;
else if (hf_vsdb[11] & EDID_DSC_12BPC)
dsc_cap->bpc_supported = 12;
else if (hf_vsdb[11] & EDID_DSC_10BPC)
dsc_cap->bpc_supported = 10;
else
dsc_cap->bpc_supported = 0;
dsc_max_frl_rate = (hf_vsdb[12] & EDID_DSC_MAX_FRL_RATE_MASK) >> 4;
get_max_frl_rate(dsc_max_frl_rate, &dsc_cap->max_lanes,
&dsc_cap->max_frl_rate_per_lane);
dsc_cap->total_chunk_kbytes = hf_vsdb[13] & EDID_DSC_TOTAL_CHUNK_KBYTES;
dsc_max_slices = hf_vsdb[12] & EDID_DSC_MAX_SLICES;
switch (dsc_max_slices) {
case 1:
dsc_cap->max_slices = 1;
dsc_cap->clk_per_slice = 340;
break;
case 2:
dsc_cap->max_slices = 2;
dsc_cap->clk_per_slice = 340;
break;
case 3:
dsc_cap->max_slices = 4;
dsc_cap->clk_per_slice = 340;
break;
case 4:
dsc_cap->max_slices = 8;
dsc_cap->clk_per_slice = 340;
break;
case 5:
dsc_cap->max_slices = 8;
dsc_cap->clk_per_slice = 400;
break;
case 6:
dsc_cap->max_slices = 12;
dsc_cap->clk_per_slice = 400;
break;
case 7:
dsc_cap->max_slices = 16;
dsc_cap->clk_per_slice = 400;
break;
case 0:
default:
dsc_cap->max_slices = 0;
dsc_cap->clk_per_slice = 0;
}
}
/* Sink Capability Data Structure, for compatibility with linux version < linux kernel 6.1 */
static void parse_hdmi_forum_scds(struct rockchip_drm_dsc_cap *dsc_cap,
u8 *max_frl_rate_per_lane, u8 *max_lanes,
@@ -1078,10 +997,7 @@ int rockchip_drm_parse_cea_ext(struct rockchip_drm_dsc_cap *dsc_cap,
for_each_cea_db(edid_ext, i, start, end) {
const u8 *db = &edid_ext[i];
if (cea_db_is_hdmi_forum_vsdb(db))
parse_edid_forum_vsdb(dsc_cap, max_frl_rate_per_lane,
max_lanes, add_func, db);
else if (cea_db_is_hdmi_forum_scdb(db))
if (cea_db_is_hdmi_forum_vsdb(db) || cea_db_is_hdmi_forum_scdb(db))
parse_hdmi_forum_scds(dsc_cap, max_frl_rate_per_lane,
max_lanes, db);
}