410 строки
12 KiB
C
410 строки
12 KiB
C
// 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_soc_pcm_stream 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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data->params.rates = snd_pcm_rate_to_rate_bit(params_rate(params));
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data->params.rate_min = params_rate(params);
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data->params.rate_max = params_rate(params);
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data->params.formats = 1 << params_format(params);
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data->params.channels_min = params_channels(params);
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data->params.channels_max = params_channels(params);
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data->params.sig_bits = dai->driver->playback.sig_bits;
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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 (WARN_ON(!rtd->dai_link->params)) {
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dev_warn(dai->dev, "codec2codec link expected\n");
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return -EINVAL;
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}
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/* Replace link params with the input params */
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rtd->dai_link->params = &in_data->params;
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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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.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" },
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{ "I2S SRC", "I2S B", "I2S IN B Playback" },
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{ "I2S SRC", "I2S C", "I2S IN C Playback" },
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{ "I2S OUT EN", "Switch", "I2S SRC" },
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{ "I2S OUT Capture", NULL, "I2S OUT EN" },
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{ "SPDIF SRC", "SPDIF A", "SPDIF IN A Playback" },
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{ "SPDIF SRC", "SPDIF B", "SPDIF IN B Playback" },
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{ "SPDIF OUT EN", "Switch", "SPDIF SRC" },
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{ "SPDIF OUT Capture", NULL, "SPDIF OUT EN" },
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};
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static const struct snd_soc_component_driver g12a_tohdmitx_component_drv = {
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.probe = g12a_tohdmi_component_probe,
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.dapm_widgets = g12a_tohdmitx_widgets,
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.num_dapm_widgets = ARRAY_SIZE(g12a_tohdmitx_widgets),
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.dapm_routes = g12a_tohdmitx_routes,
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.num_dapm_routes = ARRAY_SIZE(g12a_tohdmitx_routes),
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.endianness = 1,
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.non_legacy_dai_naming = 1,
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};
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static const struct regmap_config g12a_tohdmitx_regmap_cfg = {
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.reg_bits = 32,
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.val_bits = 32,
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.reg_stride = 4,
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};
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static const struct of_device_id g12a_tohdmitx_of_match[] = {
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{ .compatible = "amlogic,g12a-tohdmitx", },
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{}
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};
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MODULE_DEVICE_TABLE(of, g12a_tohdmitx_of_match);
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static int g12a_tohdmitx_probe(struct platform_device *pdev)
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{
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struct device *dev = &pdev->dev;
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void __iomem *regs;
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struct regmap *map;
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regs = devm_platform_ioremap_resource(pdev, 0);
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if (IS_ERR(regs))
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return PTR_ERR(regs);
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map = devm_regmap_init_mmio(dev, regs, &g12a_tohdmitx_regmap_cfg);
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if (IS_ERR(map)) {
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dev_err(dev, "failed to init regmap: %ld\n",
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PTR_ERR(map));
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return PTR_ERR(map);
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}
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return devm_snd_soc_register_component(dev,
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&g12a_tohdmitx_component_drv, g12a_tohdmitx_dai_drv,
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ARRAY_SIZE(g12a_tohdmitx_dai_drv));
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}
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static struct platform_driver g12a_tohdmitx_pdrv = {
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.driver = {
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.name = G12A_TOHDMITX_DRV_NAME,
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.of_match_table = g12a_tohdmitx_of_match,
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},
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.probe = g12a_tohdmitx_probe,
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};
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module_platform_driver(g12a_tohdmitx_pdrv);
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MODULE_AUTHOR("Jerome Brunet <jbrunet@baylibre.com>");
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MODULE_DESCRIPTION("Amlogic G12a To HDMI Tx Control Codec Driver");
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MODULE_LICENSE("GPL v2");
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