diff options
Diffstat (limited to 'sound/soc/meson/aiu-acodec-ctrl.c')
| -rw-r--r-- | sound/soc/meson/aiu-acodec-ctrl.c | 205 |
1 files changed, 205 insertions, 0 deletions
diff --git a/sound/soc/meson/aiu-acodec-ctrl.c b/sound/soc/meson/aiu-acodec-ctrl.c new file mode 100644 index 0000000000..7b04b97f7b --- /dev/null +++ b/sound/soc/meson/aiu-acodec-ctrl.c @@ -0,0 +1,205 @@ +// SPDX-License-Identifier: GPL-2.0 +// +// Copyright (c) 2020 BayLibre, SAS. +// Author: Jerome Brunet <jbrunet@baylibre.com> + +#include <linux/bitfield.h> +#include <sound/pcm_params.h> +#include <sound/soc.h> +#include <sound/soc-dai.h> + +#include <dt-bindings/sound/meson-aiu.h> +#include "aiu.h" +#include "meson-codec-glue.h" + +#define CTRL_DIN_EN 15 +#define CTRL_CLK_INV BIT(14) +#define CTRL_LRCLK_INV BIT(13) +#define CTRL_I2S_IN_BCLK_SRC BIT(11) +#define CTRL_DIN_LRCLK_SRC_SHIFT 6 +#define CTRL_DIN_LRCLK_SRC (0x3 << CTRL_DIN_LRCLK_SRC_SHIFT) +#define CTRL_BCLK_MCLK_SRC GENMASK(5, 4) +#define CTRL_DIN_SKEW GENMASK(3, 2) +#define CTRL_I2S_OUT_LANE_SRC 0 + +#define AIU_ACODEC_OUT_CHMAX 2 + +static const char * const aiu_acodec_ctrl_mux_texts[] = { + "DISABLED", "I2S", "PCM", +}; + +static int aiu_acodec_ctrl_mux_put_enum(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct snd_soc_component *component = + snd_soc_dapm_kcontrol_component(kcontrol); + struct snd_soc_dapm_context *dapm = + snd_soc_dapm_kcontrol_dapm(kcontrol); + struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; + unsigned int mux, changed; + + mux = snd_soc_enum_item_to_val(e, ucontrol->value.enumerated.item[0]); + changed = snd_soc_component_test_bits(component, e->reg, + CTRL_DIN_LRCLK_SRC, + FIELD_PREP(CTRL_DIN_LRCLK_SRC, + mux)); + + if (!changed) + return 0; + + /* Force disconnect of the mux while updating */ + snd_soc_dapm_mux_update_power(dapm, kcontrol, 0, NULL, NULL); + + snd_soc_component_update_bits(component, e->reg, + CTRL_DIN_LRCLK_SRC | + CTRL_BCLK_MCLK_SRC, + FIELD_PREP(CTRL_DIN_LRCLK_SRC, mux) | + FIELD_PREP(CTRL_BCLK_MCLK_SRC, mux)); + + snd_soc_dapm_mux_update_power(dapm, kcontrol, mux, e, NULL); + + return 1; +} + +static SOC_ENUM_SINGLE_DECL(aiu_acodec_ctrl_mux_enum, AIU_ACODEC_CTRL, + CTRL_DIN_LRCLK_SRC_SHIFT, + aiu_acodec_ctrl_mux_texts); + +static const struct snd_kcontrol_new aiu_acodec_ctrl_mux = + SOC_DAPM_ENUM_EXT("ACodec Source", aiu_acodec_ctrl_mux_enum, + snd_soc_dapm_get_enum_double, + aiu_acodec_ctrl_mux_put_enum); + +static const struct snd_kcontrol_new aiu_acodec_ctrl_out_enable = + SOC_DAPM_SINGLE_AUTODISABLE("Switch", AIU_ACODEC_CTRL, + CTRL_DIN_EN, 1, 0); + +static const struct snd_soc_dapm_widget aiu_acodec_ctrl_widgets[] = { + SND_SOC_DAPM_MUX("ACODEC SRC", SND_SOC_NOPM, 0, 0, + &aiu_acodec_ctrl_mux), + SND_SOC_DAPM_SWITCH("ACODEC OUT EN", SND_SOC_NOPM, 0, 0, + &aiu_acodec_ctrl_out_enable), +}; + +static int aiu_acodec_ctrl_input_hw_params(struct snd_pcm_substream *substream, + struct snd_pcm_hw_params *params, + struct snd_soc_dai *dai) +{ + struct meson_codec_glue_input *data; + int ret; + + ret = meson_codec_glue_input_hw_params(substream, params, dai); + if (ret) + return ret; + + /* The glue will provide 1 lane out of the 4 to the output */ + data = meson_codec_glue_input_get_data(dai); + data->params.channels_min = min_t(unsigned int, AIU_ACODEC_OUT_CHMAX, + data->params.channels_min); + data->params.channels_max = min_t(unsigned int, AIU_ACODEC_OUT_CHMAX, + data->params.channels_max); + + return 0; +} + +static const struct snd_soc_dai_ops aiu_acodec_ctrl_input_ops = { + .probe = meson_codec_glue_input_dai_probe, + .remove = meson_codec_glue_input_dai_remove, + .hw_params = aiu_acodec_ctrl_input_hw_params, + .set_fmt = meson_codec_glue_input_set_fmt, +}; + +static const struct snd_soc_dai_ops aiu_acodec_ctrl_output_ops = { + .startup = meson_codec_glue_output_startup, +}; + +#define AIU_ACODEC_CTRL_FORMATS \ + (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE | \ + SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S24_LE | \ + SNDRV_PCM_FMTBIT_S32_LE) + +#define AIU_ACODEC_STREAM(xname, xsuffix, xchmax) \ +{ \ + .stream_name = xname " " xsuffix, \ + .channels_min = 1, \ + .channels_max = (xchmax), \ + .rate_min = 5512, \ + .rate_max = 192000, \ + .formats = AIU_ACODEC_CTRL_FORMATS, \ +} + +#define AIU_ACODEC_INPUT(xname) { \ + .name = "ACODEC CTRL " xname, \ + .playback = AIU_ACODEC_STREAM(xname, "Playback", 8), \ + .ops = &aiu_acodec_ctrl_input_ops, \ +} + +#define AIU_ACODEC_OUTPUT(xname) { \ + .name = "ACODEC CTRL " xname, \ + .capture = AIU_ACODEC_STREAM(xname, "Capture", AIU_ACODEC_OUT_CHMAX), \ + .ops = &aiu_acodec_ctrl_output_ops, \ +} + +static struct snd_soc_dai_driver aiu_acodec_ctrl_dai_drv[] = { + [CTRL_I2S] = AIU_ACODEC_INPUT("ACODEC I2S IN"), + [CTRL_PCM] = AIU_ACODEC_INPUT("ACODEC PCM IN"), + [CTRL_OUT] = AIU_ACODEC_OUTPUT("ACODEC OUT"), +}; + +static const struct snd_soc_dapm_route aiu_acodec_ctrl_routes[] = { + { "ACODEC SRC", "I2S", "ACODEC I2S IN Playback" }, + { "ACODEC SRC", "PCM", "ACODEC PCM IN Playback" }, + { "ACODEC OUT EN", "Switch", "ACODEC SRC" }, + { "ACODEC OUT Capture", NULL, "ACODEC OUT EN" }, +}; + +static const struct snd_kcontrol_new aiu_acodec_ctrl_controls[] = { + SOC_SINGLE("ACODEC I2S Lane Select", AIU_ACODEC_CTRL, + CTRL_I2S_OUT_LANE_SRC, 3, 0), +}; + +static int aiu_acodec_of_xlate_dai_name(struct snd_soc_component *component, + const struct of_phandle_args *args, + const char **dai_name) +{ + return aiu_of_xlate_dai_name(component, args, dai_name, AIU_ACODEC); +} + +static int aiu_acodec_ctrl_component_probe(struct snd_soc_component *component) +{ + /* + * NOTE: Din Skew setting + * According to the documentation, the following update adds one delay + * to the din line. Without this, the output saturates. This happens + * regardless of the link format (i2s or left_j) so it is not clear what + * it actually does but it seems to be required + */ + snd_soc_component_update_bits(component, AIU_ACODEC_CTRL, + CTRL_DIN_SKEW, + FIELD_PREP(CTRL_DIN_SKEW, 2)); + + return 0; +} + +static const struct snd_soc_component_driver aiu_acodec_ctrl_component = { + .name = "AIU Internal DAC Codec Control", + .probe = aiu_acodec_ctrl_component_probe, + .controls = aiu_acodec_ctrl_controls, + .num_controls = ARRAY_SIZE(aiu_acodec_ctrl_controls), + .dapm_widgets = aiu_acodec_ctrl_widgets, + .num_dapm_widgets = ARRAY_SIZE(aiu_acodec_ctrl_widgets), + .dapm_routes = aiu_acodec_ctrl_routes, + .num_dapm_routes = ARRAY_SIZE(aiu_acodec_ctrl_routes), + .of_xlate_dai_name = aiu_acodec_of_xlate_dai_name, + .endianness = 1, +#ifdef CONFIG_DEBUG_FS + .debugfs_prefix = "acodec", +#endif +}; + +int aiu_acodec_ctrl_register_component(struct device *dev) +{ + return snd_soc_register_component(dev, &aiu_acodec_ctrl_component, + aiu_acodec_ctrl_dai_drv, + ARRAY_SIZE(aiu_acodec_ctrl_dai_drv)); +} |