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 --- drivers/gpu/drm/radeon/evergreen_hdmi.c | 30 ++++++++++++++++++++++++++++++ drivers/gpu/drm/radeon/evergreend.h | 3 ++- 2 files changed, 32 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/radeon/evergreen_hdmi.c b/drivers/gpu/drm/radeon/evergreen_hdmi.c index 8579721..b760ef5 100644 --- a/drivers/gpu/drm/radeon/evergreen_hdmi.c +++ b/drivers/gpu/drm/radeon/evergreen_hdmi.c @@ -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 */ diff --git a/drivers/gpu/drm/radeon/evergreend.h b/drivers/gpu/drm/radeon/evergreend.h index f9c7963..b066d67 100644 --- a/drivers/gpu/drm/radeon/evergreend.h +++ b/drivers/gpu/drm/radeon/evergreend.h @@ -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)