diff options
| author | Russell King <rmk+kernel@arm.linux.org.uk> | 2013-11-07 16:01:45 +0000 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2015-10-09 17:14:12 +0100 |
| commit | 7ed6c665e19d4c0456d01c01147e82563c482c4d (patch) | |
| tree | ed6bb0a14799b8161e45ddc97cf2cce5032b5f45 /drivers/gpu/drm/bridge/dw_hdmi.h | |
| parent | aeac23bda87fd98049352d3bc27a1cb80445e7a0 (diff) | |
drm: bridge/dw_hdmi-ahb-audio: add audio driver
Add ALSA based HDMI AHB audio driver for dw_hdmi. The only buffer
format supported by the hardware is its own special IEC958 based format,
which is not compatible with any ALSA format. To avoid doing too much
data manipulation within the driver, we support only ALSAs IEC958 LE and
24-bit PCM formats for 2 to 6 channels, which we convert to its hardware
format.
A more desirable solution would be to have this conversion in userspace,
but ALSA does not appear to allow such transformations outside of
libasound itself.
Reviewed-by: Takashi Iwai <tiwai@suse.de>
Tested-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'drivers/gpu/drm/bridge/dw_hdmi.h')
| -rw-r--r-- | drivers/gpu/drm/bridge/dw_hdmi.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/gpu/drm/bridge/dw_hdmi.h b/drivers/gpu/drm/bridge/dw_hdmi.h index ee7f7ed2ab12..fc9a560429d6 100644 --- a/drivers/gpu/drm/bridge/dw_hdmi.h +++ b/drivers/gpu/drm/bridge/dw_hdmi.h @@ -545,6 +545,9 @@ #define HDMI_I2CM_FS_SCL_LCNT_0_ADDR 0x7E12 enum { +/* CONFIG1_ID field values */ + HDMI_CONFIG1_AHB = 0x01, + /* IH_FC_INT2 field values */ HDMI_IH_FC_INT2_OVERFLOW_MASK = 0x03, HDMI_IH_FC_INT2_LOW_PRIORITY_OVERFLOW = 0x02, |