From efa023363cdffafa839e5cc7e6fc9f38631e998d Mon Sep 17 00:00:00 2001 From: Chris Park Date: Wed, 17 Apr 2019 16:32:25 -0400 Subject: [PATCH] drm/amd/display: Support AVI InfoFrame V3 and V4 [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 Signed-off-by: Chris Park Reviewed-by: Nevenko Stupar Acked-by: Bhawanpreet Lakha Signed-off-by: Alex Deucher --- 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 eac7186..9ef417e 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 */ -- 2.7.4