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drm/radeon/hdmi: DCE3: clean ACR control 

What initially seemed to be a typo in fglrx (using register 0x740c
instead of 0x74dc) appeared to be a correct behavior. DCE3 has ACR and
CRC registers swapped which explains why we needed
WREG32(HDMI0_AUDIO_CRC_CONTROL + offset, 0x1000);

This has been tested for possible regressions on DCE3 HD3470 (RV620).

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Rafał Miłecki 2014-05-16 11:10:29 +02:00 committed by Alex Deucher
parent 8f33a156c2
commit 2e93cac90c
2 changed files with 7 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
drivers/gpu/drm/radeon/r600_hdmi.c
View File

@ -332,6 +332,7 @@ void r600_hdmi_setmode(struct drm_encoder *encoder, struct drm_display_mode *mod
u8 buffer[HDMI_INFOFRAME_HEADER_SIZE + HDMI_AVI_INFOFRAME_SIZE];
struct hdmi_avi_infoframe frame;
uint32_t offset;
uint32_t acr_ctl;
ssize_t err;
if (!dig || !dig->afmt)
@ -351,15 +352,16 @@ void r600_hdmi_setmode(struct drm_encoder *encoder, struct drm_display_mode *mod
WREG32(HDMI0_VBI_PACKET_CONTROL + offset,
HDMI0_NULL_SEND); /* send null packets when required */
WREG32(HDMI0_AUDIO_CRC_CONTROL + offset, 0x1000);
WREG32(HDMI0_AUDIO_PACKET_CONTROL + offset,
HDMI0_AUDIO_SAMPLE_SEND | /* send audio packets */
HDMI0_AUDIO_DELAY_EN(1) | /* default audio delay */
HDMI0_AUDIO_PACKETS_PER_LINE(3) | /* should be suffient for all audio modes and small enough for all hblanks */
HDMI0_60958_CS_UPDATE); /* allow 60958 channel status fields to be updated */
WREG32(HDMI0_ACR_PACKET_CONTROL + offset,
/* DCE 3.0 uses register that's normally for CRC_CONTROL */
acr_ctl = ASIC_IS_DCE3(rdev) ? DCE3_HDMI0_ACR_PACKET_CONTROL :
HDMI0_ACR_PACKET_CONTROL;
WREG32(acr_ctl + offset,
HDMI0_ACR_SOURCE | /* select SW CTS value - XXX verify that hw CTS works on all families */
HDMI0_ACR_AUTO_SEND); /* allow hw to sent ACR packets when required */

2
drivers/gpu/drm/radeon/r600d.h
View File

@ -1038,6 +1038,7 @@
# define HDMI0_AZ_FORMAT_WTRIG_ACK (1 << 29)
#define HDMI0_AUDIO_CRC_CONTROL 0x740c
# define HDMI0_AUDIO_CRC_EN (1 << 0)
#define DCE3_HDMI0_ACR_PACKET_CONTROL 0x740c
#define HDMI0_VBI_PACKET_CONTROL 0x7410
# define HDMI0_NULL_SEND (1 << 0)
# define HDMI0_GC_SEND (1 << 4)
@ -1166,6 +1167,7 @@
# define HDMI0_ACR_48 3
# define HDMI0_ACR_SOURCE (1 << 8) /* 0 - hw; 1 - cts value */
# define HDMI0_ACR_AUTO_SEND (1 << 12)
#define DCE3_HDMI0_AUDIO_CRC_CONTROL 0x74dc
#define HDMI0_RAMP_CONTROL0 0x74e0
# define HDMI0_RAMP_MAX_COUNT(x) (((x) & 0xffffff) << 0)
#define HDMI0_RAMP_CONTROL1 0x74e4