ASoC: OMAP: HDMI: Use the DSS audio interface

Instead of accessing the HDMI IP directly, the CPU DAI driver takes
advantage of the audio interface provided by the DSS device driver.
The ASoC driver will link the DSS audio functionality with ALSA by
calling the appropriate DSS device driver functions at the relevant
moments. For this, three new DAI operations are added: trigger, prepare
and shutdown operations.

At the moment, it is assumed that only one HDMI display is available
in the system, as it is the case in OMAP4. However, in the future,
one DAI for each HDMI display should be provided.

Signed-off-by: Ricardo Neri <ricardo.neri@ti.com>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Liam Girdwood <lrg@ti.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/sound/soc/omap/Kconfig b/sound/soc/omap/Kconfig
index 9ccfa5e1c11..13afb2c68dc 100644
--- a/sound/soc/omap/Kconfig
+++ b/sound/soc/omap/Kconfig
@@ -114,6 +114,7 @@ config SND_OMAP_SOC_OMAP4_HDMI
         depends on SND_OMAP_SOC && OMAP4_DSS_HDMI && OMAP2_DSS && ARCH_OMAP4
         select SND_OMAP_SOC_HDMI
         select SND_SOC_OMAP_HDMI_CODEC
+        select OMAP4_DSS_HDMI_AUDIO
         help
           Say Y if you want to add support for SoC HDMI audio on Texas Instruments
           OMAP4 chips