diff options
| author | Eric Anholt <eric@anholt.net> | 2017-02-27 23:28:02 +0300 |
|---|---|---|
| committer | Eric Anholt <eric@anholt.net> | 2017-03-16 20:33:30 +0300 |
| commit | bb7d78568814a31a11fa14f1479a9fe51f1582ad (patch) | |
| tree | 007a090c8601fa512d50ec6487d22da059eff505 /drivers/gpu/drm/vc4/Kconfig | |
| parent | 199a76946d4303ce047e6ac9a49eefa0105f6e78 (diff) | |
| download | linux-bb7d78568814a31a11fa14f1479a9fe51f1582ad.tar.xz | |
drm/vc4: Add HDMI audio support
The HDMI encoder IP embeds all needed blocks to output audio, with a
custom DAI called MAI moving audio between the two parts of the HDMI
core. This driver now exposes a sound card to let users stream audio
to their display.
Using the hdmi-codec driver has been considered here, but MAI meant
having to significantly rework hdmi-codec, and it would have left
little shared code with the I2S mode anyway.
The encoder requires that the audio be SPDIF-formatted frames only,
which alsalib will format-convert for us.
This patch is the combined work of Eric Anholt (initial register setup
with a separate dmaengine driver and using simple-audio-card) and
Boris Brezillon (moving it all into HDMI, massive debug to get it
actually working), and which Eric has the permission to release.
v2: Drop "-audio" from sound card name, since that's already implied
(suggestion by Boris)
Signed-off-by: Eric Anholt <eric@anholt.net>
Acked-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20170227202803.12855-2-eric@anholt.net
Diffstat (limited to 'drivers/gpu/drm/vc4/Kconfig')
| -rw-r--r-- | drivers/gpu/drm/vc4/Kconfig | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/gpu/drm/vc4/Kconfig b/drivers/gpu/drm/vc4/Kconfig index e1517d07cb7d..973b4203c0b2 100644 --- a/drivers/gpu/drm/vc4/Kconfig +++ b/drivers/gpu/drm/vc4/Kconfig @@ -2,11 +2,15 @@ config DRM_VC4 tristate "Broadcom VC4 Graphics" depends on ARCH_BCM2835 || COMPILE_TEST depends on DRM + depends on SND && SND_SOC depends on COMMON_CLK select DRM_KMS_HELPER select DRM_KMS_CMA_HELPER select DRM_GEM_CMA_HELPER select DRM_PANEL + select SND_PCM + select SND_PCM_ELD + select SND_SOC_GENERIC_DMAENGINE_PCM select DRM_MIPI_DSI help Choose this option if you have a system that has a Broadcom |