drm: exynos: Add driver for HDMI audio interface

The hdmi-codec interface added in this patch is required to properly support HDMI audio. Currently the audio part of the SoC internal HDMI transmitter is configured with fixed values, which makes HDMI audio working by chance, only on boards having an external audio codec connected in parallel with the HDMI audio transmitter's input I2S interface. Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Reviewed-by: Andrzej Hajda <a.hajda@samsung.com> Signed-off-by: Inki Dae <inki.dae@samsung.com>
mariux64 · Oct 26, 2017 · 691da76 · 691da76
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diff --git a/drivers/gpu/drm/exynos/Kconfig b/drivers/gpu/drm/exynos/Kconfig
@@ -3,6 +3,7 @@ config DRM_EXYNOS
 	depends on OF && DRM && (ARCH_S3C64XX || ARCH_EXYNOS || ARCH_MULTIPLATFORM)
 	select DRM_KMS_HELPER
 	select VIDEOMODE_HELPERS
+	select SND_SOC_HDMI_CODEC if SND_SOC
 	help
 	  Choose this option if you have a Samsung SoC EXYNOS chipset.
 	  If M is selected the module will be called exynosdrm.