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ALSA: hda - Add driver for Tegra SoC HDA

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This adds a driver for the HDA block in Tegra SoCs.  The HDA bus is
used to communicate with the HDMI codec on Tegra124.

Most of the code is re-used from the Intel/PCI HDA driver.  It brings
over only two of the module params, power_save and probe_mask.

Signed-off-by: Dylan Reid <dgreid@chromium.org>
Reviewed-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Dylan Reid
2014-05-19 19:18:27 -07:00
committed by Takashi Iwai
parent 9674678633
commit 3c320f3f56
4 changed files with 629 additions and 0 deletions
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Documentation/devicetree/bindings/sound/nvidia,tegra30-hda.txt
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@@ -0,0 +1,28 @@
NVIDIA Tegra30 HDA controller
Required properties:
- compatible : "nvidia,tegra30-hda"
- reg : Should contain the HDA registers location and length.
- interrupts : The interrupt from the HDA controller.
- clocks : Must contain an entry for each required entry in clock-names.
See ../clocks/clock-bindings.txt for details.
- clock-names : Must include the following entries: hda, hdacodec_2x, hda2hdmi
- resets : Must contain an entry for each entry in reset-names.
See ../reset/reset.txt for details.
- reset-names : Must include the following entries: hda, hdacodec_2x, hda2hdmi
Example:
hda@0,70030000 {
compatible = "nvidia,tegra124-hda", "nvidia,tegra30-hda";
reg = <0x0 0x70030000 0x0 0x10000>;
interrupts = <GIC_SPI 81 IRQ_TYPE_LEVEL_HIGH>;
clocks = <&tegra_car TEGRA124_CLK_HDA>,
<&tegra_car TEGRA124_CLK_HDA2HDMI>,
<&tegra_car TEGRA124_CLK_HDA2CODEC_2X>;
clock-names = "hda", "hda2hdmi", "hdacodec_2x";
resets = <&tegra_car 125>, /* hda */
<&tegra_car 128>; /* hda2hdmi */
<&tegra_car 111>, /* hda2codec_2x */
reset-names = "hda", "hda2hdmi", "hdacodec_2x";
};
sound/pci/hda/Kconfig
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@@ -20,6 +20,21 @@ config SND_HDA_INTEL
To compile this driver as a module, choose M here: the module
will be called snd-hda-intel.
config SND_HDA_TEGRA
tristate "NVIDIA Tegra HD Audio"
depends on ARCH_TEGRA
select SND_HDA
help
Say Y here to support the HDA controller present in NVIDIA
Tegra SoCs
This options enables support for the HD Audio controller
present in some NVIDIA Tegra SoCs, used to communicate audio
to the HDMI output.
To compile this driver as a module, choose M here: the module
will be called snd-hda-tegra.
if SND_HDA
config SND_HDA_DSP_LOADER
sound/pci/hda/Makefile
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@@ -1,5 +1,6 @@
snd-hda-intel-objs := hda_intel.o
snd-hda-controller-objs := hda_controller.o
snd-hda-tegra-objs := hda_tegra.o
# for haswell power well
snd-hda-intel-$(CONFIG_SND_HDA_I915) += hda_i915.o
@@ -47,3 +48,4 @@ obj-$(CONFIG_SND_HDA_CODEC_HDMI) += snd-hda-codec-hdmi.o
# otherwise the codec patches won't be hooked before the PCI probe
# when built in kernel
obj-$(CONFIG_SND_HDA_INTEL) += snd-hda-intel.o
obj-$(CONFIG_SND_HDA_TEGRA) += snd-hda-tegra.o
sound/pci/hda/hda_tegra.c
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