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drm/radeon: Setup HDMI_CONTROL for hdmi deep color gcp's (v2)

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Program HDMI_CONTROL to send general control packets
for hdmi deep color mode signalling at every video
frame if bpc > 8.

This is only supported on evergreen / DCE-4 and later.

v2: rebase

Signed-off-by: Mario Kleiner <mario.kleiner.de@gmail.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Alex Deucher 2014-05-28 19:14:36 -04:00
parent f71d9ebd92
commit 7b555e068d
2 changed files with 32 additions and 1 deletions
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30
drivers/gpu/drm/radeon/evergreen_hdmi.c
View File

@ -298,6 +298,7 @@ void evergreen_hdmi_setmode(struct drm_encoder *encoder, struct drm_display_mode
struct hdmi_avi_infoframe frame;
uint32_t offset;
ssize_t err;
uint32_t val;
int bpc = 8;
if (!dig || !dig->afmt)
@ -330,6 +331,35 @@ void evergreen_hdmi_setmode(struct drm_encoder *encoder, struct drm_display_mode
WREG32(AFMT_AUDIO_CRC_CONTROL + offset, 0x1000);
val = RREG32(HDMI_CONTROL + offset);
val &= ~HDMI_DEEP_COLOR_ENABLE;
val &= ~HDMI_DEEP_COLOR_DEPTH_MASK;
switch (bpc) {
case 0:
case 6:
case 8:
case 16:
default:
DRM_DEBUG("%s: Disabling hdmi deep color for %d bpc.\n",
drm_get_connector_name(connector), bpc);
break;
case 10:
val |= HDMI_DEEP_COLOR_ENABLE;
val |= HDMI_DEEP_COLOR_DEPTH(HDMI_30BIT_DEEP_COLOR);
DRM_DEBUG("%s: Enabling hdmi deep color 30 for 10 bpc.\n",
drm_get_connector_name(connector));
break;
case 12:
val |= HDMI_DEEP_COLOR_ENABLE;
val |= HDMI_DEEP_COLOR_DEPTH(HDMI_36BIT_DEEP_COLOR);
DRM_DEBUG("%s: Enabling hdmi deep color 36 for 12 bpc.\n",
drm_get_connector_name(connector));
break;
}
WREG32(HDMI_CONTROL + offset, val);
WREG32(HDMI_VBI_PACKET_CONTROL + offset,
HDMI_NULL_SEND | /* send null packets when required */
HDMI_GC_SEND | /* send general control packets */

3
drivers/gpu/drm/radeon/evergreend.h
View File

@ -517,10 +517,11 @@
# define HDMI_ERROR_ACK (1 << 8)
# define HDMI_ERROR_MASK (1 << 9)
# define HDMI_DEEP_COLOR_ENABLE (1 << 24)
# define HDMI_DEEP_COLOR_DEPTH (((x) & 3) << 28)
# define HDMI_DEEP_COLOR_DEPTH(x) (((x) & 3) << 28)
# define HDMI_24BIT_DEEP_COLOR 0
# define HDMI_30BIT_DEEP_COLOR 1
# define HDMI_36BIT_DEEP_COLOR 2
# define HDMI_DEEP_COLOR_DEPTH_MASK (3 << 28)
#define HDMI_STATUS 0x7034
# define HDMI_ACTIVE_AVMUTE (1 << 0)
# define HDMI_AUDIO_PACKET_ERROR (1 << 16)