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ASoC: meson: add g12a tohdmitx control
Add support for the hdmitx control glue of the Amlogic g12a SoC family. This glue links the 3 TDM and 2 SPDIF output interfaces of the SoC to the related inputs of the Synopsys HDMI controller found in these SoCs. Signed-off-by: Jerome Brunet <jbrunet@baylibre.com> Tested-by: Neil Armstrong <narmstrong@baylibre.com> Tested-by: Kevin Hilman <khilman@baylibre.com> Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Jerome Brunet
Mark Brown
parent
0a8f1117a6
commit
c8609f3870
3 changed files with 423 additions and 0 deletions
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@ -56,6 +56,7 @@ config SND_MESON_AXG_SOUND_CARD
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imply SND_MESON_AXG_SPDIFOUT
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imply SND_MESON_AXG_SPDIFIN
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imply SND_MESON_AXG_PDM
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imply SND_MESON_G12A_TOHDMITX if DRM_MESON_DW_HDMI
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help
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Select Y or M to add support for the AXG SoC sound card
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@ -82,4 +83,11 @@ config SND_MESON_AXG_PDM
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help
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Select Y or M to add support for PDM input embedded
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in the Amlogic AXG SoC family
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config SND_MESON_G12A_TOHDMITX
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tristate "Amlogic G12A To HDMI TX Control Support"
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imply SND_SOC_HDMI_CODEC
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help
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Select Y or M to add support for HDMI audio on the g12a SoC
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family
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endmenu
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@ -11,6 +11,7 @@ snd-soc-meson-axg-sound-card-objs := axg-card.o
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snd-soc-meson-axg-spdifin-objs := axg-spdifin.o
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snd-soc-meson-axg-spdifout-objs := axg-spdifout.o
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snd-soc-meson-axg-pdm-objs := axg-pdm.o
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snd-soc-meson-g12a-tohdmitx-objs := g12a-tohdmitx.o
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obj-$(CONFIG_SND_MESON_AXG_FIFO) += snd-soc-meson-axg-fifo.o
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obj-$(CONFIG_SND_MESON_AXG_FRDDR) += snd-soc-meson-axg-frddr.o
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@ -23,3 +24,4 @@ obj-$(CONFIG_SND_MESON_AXG_SOUND_CARD) += snd-soc-meson-axg-sound-card.o
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obj-$(CONFIG_SND_MESON_AXG_SPDIFIN) += snd-soc-meson-axg-spdifin.o
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obj-$(CONFIG_SND_MESON_AXG_SPDIFOUT) += snd-soc-meson-axg-spdifout.o
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obj-$(CONFIG_SND_MESON_AXG_PDM) += snd-soc-meson-axg-pdm.o
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obj-$(CONFIG_SND_MESON_G12A_TOHDMITX) += snd-soc-meson-g12a-tohdmitx.o
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413
sound/soc/meson/g12a-tohdmitx.c
Normal file
413
sound/soc/meson/g12a-tohdmitx.c
Normal file
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@ -0,0 +1,413 @@
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// SPDX-License-Identifier: GPL-2.0
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//
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// Copyright (c) 2019 BayLibre, SAS.
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// Author: Jerome Brunet <jbrunet@baylibre.com>
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#include <linux/bitfield.h>
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#include <linux/clk.h>
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#include <linux/module.h>
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#include <sound/pcm_params.h>
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#include <linux/regmap.h>
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#include <sound/soc.h>
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#include <sound/soc-dai.h>
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#include <dt-bindings/sound/meson-g12a-tohdmitx.h>
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#define G12A_TOHDMITX_DRV_NAME "g12a-tohdmitx"
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#define TOHDMITX_CTRL0 0x0
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#define CTRL0_ENABLE_SHIFT 31
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#define CTRL0_I2S_DAT_SEL GENMASK(13, 12)
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#define CTRL0_I2S_LRCLK_SEL GENMASK(9, 8)
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#define CTRL0_I2S_BLK_CAP_INV BIT(7)
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#define CTRL0_I2S_BCLK_O_INV BIT(6)
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#define CTRL0_I2S_BCLK_SEL GENMASK(5, 4)
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#define CTRL0_SPDIF_CLK_CAP_INV BIT(3)
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#define CTRL0_SPDIF_CLK_O_INV BIT(2)
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#define CTRL0_SPDIF_SEL BIT(1)
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#define CTRL0_SPDIF_CLK_SEL BIT(0)
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struct g12a_tohdmitx_input {
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struct snd_pcm_hw_params params;
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unsigned int fmt;
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};
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static struct snd_soc_dapm_widget *
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g12a_tohdmitx_get_input(struct snd_soc_dapm_widget *w)
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{
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struct snd_soc_dapm_path *p = NULL;
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struct snd_soc_dapm_widget *in;
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snd_soc_dapm_widget_for_each_source_path(w, p) {
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if (!p->connect)
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continue;
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/* Check that we still are in the same component */
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if (snd_soc_dapm_to_component(w->dapm) !=
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snd_soc_dapm_to_component(p->source->dapm))
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continue;
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if (p->source->id == snd_soc_dapm_dai_in)
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return p->source;
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in = g12a_tohdmitx_get_input(p->source);
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if (in)
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return in;
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}
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return NULL;
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}
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static struct g12a_tohdmitx_input *
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g12a_tohdmitx_get_input_data(struct snd_soc_dapm_widget *w)
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{
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struct snd_soc_dapm_widget *in =
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g12a_tohdmitx_get_input(w);
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struct snd_soc_dai *dai;
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if (WARN_ON(!in))
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return NULL;
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dai = in->priv;
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return dai->playback_dma_data;
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}
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static const char * const g12a_tohdmitx_i2s_mux_texts[] = {
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"I2S A", "I2S B", "I2S C",
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};
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static SOC_ENUM_SINGLE_EXT_DECL(g12a_tohdmitx_i2s_mux_enum,
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g12a_tohdmitx_i2s_mux_texts);
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static int g12a_tohdmitx_get_input_val(struct snd_soc_component *component,
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unsigned int mask)
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{
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unsigned int val;
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snd_soc_component_read(component, TOHDMITX_CTRL0, &val);
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return (val & mask) >> __ffs(mask);
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}
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static int g12a_tohdmitx_i2s_mux_get_enum(struct snd_kcontrol *kcontrol,
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struct snd_ctl_elem_value *ucontrol)
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{
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struct snd_soc_component *component =
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snd_soc_dapm_kcontrol_component(kcontrol);
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ucontrol->value.enumerated.item[0] =
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g12a_tohdmitx_get_input_val(component, CTRL0_I2S_DAT_SEL);
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return 0;
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}
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static int g12a_tohdmitx_i2s_mux_put_enum(struct snd_kcontrol *kcontrol,
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struct snd_ctl_elem_value *ucontrol)
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{
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struct snd_soc_component *component =
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snd_soc_dapm_kcontrol_component(kcontrol);
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struct snd_soc_dapm_context *dapm =
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snd_soc_dapm_kcontrol_dapm(kcontrol);
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struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
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unsigned int mux = ucontrol->value.enumerated.item[0];
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unsigned int val = g12a_tohdmitx_get_input_val(component,
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CTRL0_I2S_DAT_SEL);
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/* Force disconnect of the mux while updating */
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if (val != mux)
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snd_soc_dapm_mux_update_power(dapm, kcontrol, 0, NULL, NULL);
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snd_soc_component_update_bits(component, TOHDMITX_CTRL0,
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CTRL0_I2S_DAT_SEL |
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CTRL0_I2S_LRCLK_SEL |
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CTRL0_I2S_BCLK_SEL,
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FIELD_PREP(CTRL0_I2S_DAT_SEL, mux) |
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FIELD_PREP(CTRL0_I2S_LRCLK_SEL, mux) |
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FIELD_PREP(CTRL0_I2S_BCLK_SEL, mux));
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snd_soc_dapm_mux_update_power(dapm, kcontrol, mux, e, NULL);
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return 0;
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}
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static const struct snd_kcontrol_new g12a_tohdmitx_i2s_mux =
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SOC_DAPM_ENUM_EXT("I2S Source", g12a_tohdmitx_i2s_mux_enum,
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g12a_tohdmitx_i2s_mux_get_enum,
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g12a_tohdmitx_i2s_mux_put_enum);
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static const char * const g12a_tohdmitx_spdif_mux_texts[] = {
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"SPDIF A", "SPDIF B",
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};
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static SOC_ENUM_SINGLE_EXT_DECL(g12a_tohdmitx_spdif_mux_enum,
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g12a_tohdmitx_spdif_mux_texts);
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static int g12a_tohdmitx_spdif_mux_get_enum(struct snd_kcontrol *kcontrol,
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struct snd_ctl_elem_value *ucontrol)
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{
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struct snd_soc_component *component =
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snd_soc_dapm_kcontrol_component(kcontrol);
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ucontrol->value.enumerated.item[0] =
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g12a_tohdmitx_get_input_val(component, CTRL0_SPDIF_SEL);
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return 0;
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}
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static int g12a_tohdmitx_spdif_mux_put_enum(struct snd_kcontrol *kcontrol,
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struct snd_ctl_elem_value *ucontrol)
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{
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struct snd_soc_component *component =
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snd_soc_dapm_kcontrol_component(kcontrol);
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struct snd_soc_dapm_context *dapm =
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snd_soc_dapm_kcontrol_dapm(kcontrol);
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struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
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unsigned int mux = ucontrol->value.enumerated.item[0];
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unsigned int val = g12a_tohdmitx_get_input_val(component,
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CTRL0_SPDIF_SEL);
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/* Force disconnect of the mux while updating */
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if (val != mux)
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snd_soc_dapm_mux_update_power(dapm, kcontrol, 0, NULL, NULL);
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snd_soc_component_update_bits(component, TOHDMITX_CTRL0,
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CTRL0_SPDIF_SEL |
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CTRL0_SPDIF_CLK_SEL,
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FIELD_PREP(CTRL0_SPDIF_SEL, mux) |
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FIELD_PREP(CTRL0_SPDIF_CLK_SEL, mux));
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snd_soc_dapm_mux_update_power(dapm, kcontrol, mux, e, NULL);
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return 0;
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}
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static const struct snd_kcontrol_new g12a_tohdmitx_spdif_mux =
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SOC_DAPM_ENUM_EXT("SPDIF Source", g12a_tohdmitx_spdif_mux_enum,
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g12a_tohdmitx_spdif_mux_get_enum,
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g12a_tohdmitx_spdif_mux_put_enum);
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static const struct snd_kcontrol_new g12a_tohdmitx_out_enable =
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SOC_DAPM_SINGLE_AUTODISABLE("Switch", TOHDMITX_CTRL0,
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CTRL0_ENABLE_SHIFT, 1, 0);
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static const struct snd_soc_dapm_widget g12a_tohdmitx_widgets[] = {
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SND_SOC_DAPM_MUX("I2S SRC", SND_SOC_NOPM, 0, 0,
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&g12a_tohdmitx_i2s_mux),
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SND_SOC_DAPM_SWITCH("I2S OUT EN", SND_SOC_NOPM, 0, 0,
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&g12a_tohdmitx_out_enable),
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SND_SOC_DAPM_MUX("SPDIF SRC", SND_SOC_NOPM, 0, 0,
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&g12a_tohdmitx_spdif_mux),
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SND_SOC_DAPM_SWITCH("SPDIF OUT EN", SND_SOC_NOPM, 0, 0,
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&g12a_tohdmitx_out_enable),
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};
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static int g12a_tohdmitx_input_probe(struct snd_soc_dai *dai)
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{
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struct g12a_tohdmitx_input *data;
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data = kzalloc(sizeof(*data), GFP_KERNEL);
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if (!data)
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return -ENOMEM;
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dai->playback_dma_data = data;
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return 0;
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}
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static int g12a_tohdmitx_input_remove(struct snd_soc_dai *dai)
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{
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kfree(dai->playback_dma_data);
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return 0;
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}
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static int g12a_tohdmitx_input_hw_params(struct snd_pcm_substream *substream,
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struct snd_pcm_hw_params *params,
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struct snd_soc_dai *dai)
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{
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struct g12a_tohdmitx_input *data = dai->playback_dma_data;
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/* Save the stream params for the downstream link */
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memcpy(&data->params, params, sizeof(*params));
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return 0;
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}
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static int g12a_tohdmitx_output_hw_params(struct snd_pcm_substream *substream,
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struct snd_pcm_hw_params *params,
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struct snd_soc_dai *dai)
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{
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struct g12a_tohdmitx_input *in_data =
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g12a_tohdmitx_get_input_data(dai->capture_widget);
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if (!in_data)
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return -ENODEV;
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memcpy(params, &in_data->params, sizeof(*params));
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return 0;
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}
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static int g12a_tohdmitx_input_set_fmt(struct snd_soc_dai *dai,
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unsigned int fmt)
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{
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struct g12a_tohdmitx_input *data = dai->playback_dma_data;
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/* Save the source stream format for the downstream link */
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data->fmt = fmt;
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return 0;
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}
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static int g12a_tohdmitx_output_startup(struct snd_pcm_substream *substream,
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struct snd_soc_dai *dai)
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{
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struct snd_soc_pcm_runtime *rtd = substream->private_data;
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struct g12a_tohdmitx_input *in_data =
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g12a_tohdmitx_get_input_data(dai->capture_widget);
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if (!in_data)
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return -ENODEV;
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if (!in_data->fmt)
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return 0;
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return snd_soc_runtime_set_dai_fmt(rtd, in_data->fmt);
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}
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static const struct snd_soc_dai_ops g12a_tohdmitx_input_ops = {
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.hw_params = g12a_tohdmitx_input_hw_params,
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.set_fmt = g12a_tohdmitx_input_set_fmt,
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};
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static const struct snd_soc_dai_ops g12a_tohdmitx_output_ops = {
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.hw_params = g12a_tohdmitx_output_hw_params,
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.startup = g12a_tohdmitx_output_startup,
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};
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#define TOHDMITX_SPDIF_FORMATS \
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(SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE | \
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SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S24_LE)
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#define TOHDMITX_I2S_FORMATS \
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(SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE | \
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SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S24_LE | \
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SNDRV_PCM_FMTBIT_S32_LE)
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#define TOHDMITX_STREAM(xname, xsuffix, xfmt, xchmax) \
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{ \
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.stream_name = xname " " xsuffix, \
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.channels_min = 1, \
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.channels_max = (xchmax), \
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.rate_min = 8000, \
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.rate_max = 192000, \
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.formats = (xfmt), \
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}
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#define TOHDMITX_IN(xname, xid, xfmt, xchmax) { \
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.name = xname, \
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.id = (xid), \
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.playback = TOHDMITX_STREAM(xname, "Playback", xfmt, xchmax), \
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.ops = &g12a_tohdmitx_input_ops, \
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.probe = g12a_tohdmitx_input_probe, \
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.remove = g12a_tohdmitx_input_remove, \
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}
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#define TOHDMITX_OUT(xname, xid, xfmt, xchmax) { \
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.name = xname, \
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.id = (xid), \
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.capture = TOHDMITX_STREAM(xname, "Capture", xfmt, xchmax), \
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.ops = &g12a_tohdmitx_output_ops, \
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}
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static struct snd_soc_dai_driver g12a_tohdmitx_dai_drv[] = {
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TOHDMITX_IN("I2S IN A", TOHDMITX_I2S_IN_A,
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TOHDMITX_I2S_FORMATS, 8),
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TOHDMITX_IN("I2S IN B", TOHDMITX_I2S_IN_B,
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TOHDMITX_I2S_FORMATS, 8),
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TOHDMITX_IN("I2S IN C", TOHDMITX_I2S_IN_C,
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TOHDMITX_I2S_FORMATS, 8),
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TOHDMITX_OUT("I2S OUT", TOHDMITX_I2S_OUT,
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TOHDMITX_I2S_FORMATS, 8),
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TOHDMITX_IN("SPDIF IN A", TOHDMITX_SPDIF_IN_A,
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TOHDMITX_SPDIF_FORMATS, 2),
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TOHDMITX_IN("SPDIF IN B", TOHDMITX_SPDIF_IN_B,
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TOHDMITX_SPDIF_FORMATS, 2),
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TOHDMITX_OUT("SPDIF OUT", TOHDMITX_SPDIF_OUT,
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TOHDMITX_SPDIF_FORMATS, 2),
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};
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static int g12a_tohdmi_component_probe(struct snd_soc_component *c)
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{
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/* Initialize the static clock parameters */
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return snd_soc_component_write(c, TOHDMITX_CTRL0,
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CTRL0_I2S_BLK_CAP_INV | CTRL0_SPDIF_CLK_CAP_INV);
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}
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static const struct snd_soc_dapm_route g12a_tohdmitx_routes[] = {
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{ "I2S SRC", "I2S A", "I2S IN A Playback" },
|
||||
{ "I2S SRC", "I2S B", "I2S IN B Playback" },
|
||||
{ "I2S SRC", "I2S C", "I2S IN C Playback" },
|
||||
{ "I2S OUT EN", "Switch", "I2S SRC" },
|
||||
{ "I2S OUT Capture", NULL, "I2S OUT EN" },
|
||||
{ "SPDIF SRC", "SPDIF A", "SPDIF IN A Playback" },
|
||||
{ "SPDIF SRC", "SPDIF B", "SPDIF IN B Playback" },
|
||||
{ "SPDIF OUT EN", "Switch", "SPDIF SRC" },
|
||||
{ "SPDIF OUT Capture", NULL, "SPDIF OUT EN" },
|
||||
};
|
||||
|
||||
static const struct snd_soc_component_driver g12a_tohdmitx_component_drv = {
|
||||
.probe = g12a_tohdmi_component_probe,
|
||||
.dapm_widgets = g12a_tohdmitx_widgets,
|
||||
.num_dapm_widgets = ARRAY_SIZE(g12a_tohdmitx_widgets),
|
||||
.dapm_routes = g12a_tohdmitx_routes,
|
||||
.num_dapm_routes = ARRAY_SIZE(g12a_tohdmitx_routes),
|
||||
.endianness = 1,
|
||||
.non_legacy_dai_naming = 1,
|
||||
};
|
||||
|
||||
static const struct regmap_config g12a_tohdmitx_regmap_cfg = {
|
||||
.reg_bits = 32,
|
||||
.val_bits = 32,
|
||||
.reg_stride = 4,
|
||||
};
|
||||
|
||||
static const struct of_device_id g12a_tohdmitx_of_match[] = {
|
||||
{ .compatible = "amlogic,g12a-tohdmitx", },
|
||||
{}
|
||||
};
|
||||
MODULE_DEVICE_TABLE(of, g12a_tohdmitx_of_match);
|
||||
|
||||
static int g12a_tohdmitx_probe(struct platform_device *pdev)
|
||||
{
|
||||
struct device *dev = &pdev->dev;
|
||||
struct resource *res;
|
||||
void __iomem *regs;
|
||||
struct regmap *map;
|
||||
|
||||
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
|
||||
regs = devm_ioremap_resource(dev, res);
|
||||
if (IS_ERR(regs))
|
||||
return PTR_ERR(regs);
|
||||
|
||||
map = devm_regmap_init_mmio(dev, regs, &g12a_tohdmitx_regmap_cfg);
|
||||
if (IS_ERR(map)) {
|
||||
dev_err(dev, "failed to init regmap: %ld\n",
|
||||
PTR_ERR(map));
|
||||
return PTR_ERR(map);
|
||||
}
|
||||
|
||||
return devm_snd_soc_register_component(dev,
|
||||
&g12a_tohdmitx_component_drv, g12a_tohdmitx_dai_drv,
|
||||
ARRAY_SIZE(g12a_tohdmitx_dai_drv));
|
||||
}
|
||||
|
||||
static struct platform_driver g12a_tohdmitx_pdrv = {
|
||||
.driver = {
|
||||
.name = G12A_TOHDMITX_DRV_NAME,
|
||||
.of_match_table = g12a_tohdmitx_of_match,
|
||||
},
|
||||
.probe = g12a_tohdmitx_probe,
|
||||
};
|
||||
module_platform_driver(g12a_tohdmitx_pdrv);
|
||||
|
||||
MODULE_AUTHOR("Jerome Brunet <jbrunet@baylibre.com>");
|
||||
MODULE_DESCRIPTION("Amlogic G12a To HDMI Tx Control Codec Driver");
|
||||
MODULE_LICENSE("GPL v2");
|
||||
Loading…
Reference in a new issue