From: Chris Park <chris.p...@amd.com>
[Why]
Part of HDMI 2.1 requires AVI InfoFrame version update
from current V2 to V3 for new VICs, and V4 for
new colorimetry.
[How]
Implement V3 and V4 AVI InfoFrame.
If (C1, C0)=(1, 1) and (EC2, EC1, EC0)=(1, 1, 1),
the Source shall use 20 AVI InfoFrame Version 4.
If VIC >= 128, the Source shall use AVI InfoFrame Version 3
Change-Id: I8f846fd01bdf88717976314b0192abc947aaac54
Signed-off-by: Chris Park <chris.p...@amd.com>
Reviewed-by: Nevenko Stupar <nevenko.stu...@amd.com>
Acked-by: Bhawanpreet Lakha <Bhawanpreet la...@amd.com>
---
drivers/gpu/drm/amd/display/dc/core/dc_resource.c | 15 +++++++++++++--
1 file changed, 13 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_resource.c
b/drivers/gpu/drm/amd/display/dc/core/dc_resource.c
index eac7186e4f08..9ef417eb697d 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc_resource.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc_resource.c
@@ -2354,7 +2354,18 @@ static void set_avi_info_frame(
break;
}
}
+ /* If VIC >= 128, the Source shall use AVI InfoFrame Version 3*/
hdmi_info.bits.VIC0_VIC7 = vic;
+ if (vic >= 128)
+ hdmi_info.bits.header.version = 3;
+ /* If (C1, C0)=(1, 1) and (EC2, EC1, EC0)=(1, 1, 1),
+ * the Source shall use 20 AVI InfoFrame Version 4
+ */
+ if (hdmi_info.bits.C0_C1 == COLORIMETRY_EXTENDED &&
+ hdmi_info.bits.EC0_EC2 == COLORIMETRYEX_RESERVED) {
+ hdmi_info.bits.header.version = 4;
+ hdmi_info.bits.header.length = 14;
+ }
/* pixel repetition
* PR0 - PR3 start from 0 whereas pHwPathMode->mode.timing.flags.pixel
@@ -2376,9 +2387,9 @@ static void set_avi_info_frame(
/* check_sum - Calculate AFMT_AVI_INFO0 ~ AFMT_AVI_INFO3 */
check_sum = &hdmi_info.packet_raw_data.sb[0];
- *check_sum = HDMI_INFOFRAME_TYPE_AVI + HDMI_AVI_INFOFRAME_SIZE + 2;
+ *check_sum = HDMI_INFOFRAME_TYPE_AVI + hdmi_info.bits.header.length +
hdmi_info.bits.header.version;
- for (byte_index = 1; byte_index <= HDMI_AVI_INFOFRAME_SIZE;
byte_index++)
+ for (byte_index = 1; byte_index <= hdmi_info.bits.header.length;
byte_index++)
*check_sum += hdmi_info.packet_raw_data.sb[byte_index];
/* one byte complement */
--
2.17.1
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