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252 lines
7.3 KiB
252 lines
7.3 KiB
// SPDX-License-Identifier: GPL-2.0 |
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// |
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// Copyright (c) 2020 BayLibre, SAS. |
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// Author: Jerome Brunet <[email protected]> |
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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 <linux/regulator/consumer.h> |
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#include <linux/reset.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-toacodec.h> |
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#include "axg-tdm.h" |
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#include "meson-codec-glue.h" |
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#define G12A_TOACODEC_DRV_NAME "g12a-toacodec" |
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#define TOACODEC_CTRL0 0x0 |
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#define CTRL0_ENABLE_SHIFT 31 |
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#define CTRL0_DAT_SEL_SHIFT 14 |
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#define CTRL0_DAT_SEL (0x3 << CTRL0_DAT_SEL_SHIFT) |
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#define CTRL0_LANE_SEL 12 |
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#define CTRL0_LRCLK_SEL GENMASK(9, 8) |
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#define CTRL0_BLK_CAP_INV BIT(7) |
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#define CTRL0_BCLK_O_INV BIT(6) |
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#define CTRL0_BCLK_SEL GENMASK(5, 4) |
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#define CTRL0_MCLK_SEL GENMASK(2, 0) |
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#define TOACODEC_OUT_CHMAX 2 |
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static const char * const g12a_toacodec_mux_texts[] = { |
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"I2S A", "I2S B", "I2S C", |
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}; |
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static int g12a_toacodec_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, changed; |
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mux = snd_soc_enum_item_to_val(e, ucontrol->value.enumerated.item[0]); |
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changed = snd_soc_component_test_bits(component, e->reg, |
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CTRL0_DAT_SEL, |
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FIELD_PREP(CTRL0_DAT_SEL, mux)); |
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if (!changed) |
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return 0; |
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/* Force disconnect of the mux while updating */ |
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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, e->reg, |
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CTRL0_DAT_SEL | |
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CTRL0_LRCLK_SEL | |
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CTRL0_BCLK_SEL, |
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FIELD_PREP(CTRL0_DAT_SEL, mux) | |
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FIELD_PREP(CTRL0_LRCLK_SEL, mux) | |
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FIELD_PREP(CTRL0_BCLK_SEL, mux)); |
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/* |
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* FIXME: |
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* On this soc, the glue gets the MCLK directly from the clock |
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* controller instead of going the through the TDM interface. |
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* |
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* Here we assume interface A uses clock A, etc ... While it is |
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* true for now, it could be different. Instead the glue should |
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* find out the clock used by the interface and select the same |
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* source. For that, we will need regmap backed clock mux which |
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* is a work in progress |
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*/ |
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snd_soc_component_update_bits(component, e->reg, |
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CTRL0_MCLK_SEL, |
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FIELD_PREP(CTRL0_MCLK_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 SOC_ENUM_SINGLE_DECL(g12a_toacodec_mux_enum, TOACODEC_CTRL0, |
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CTRL0_DAT_SEL_SHIFT, |
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g12a_toacodec_mux_texts); |
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static const struct snd_kcontrol_new g12a_toacodec_mux = |
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SOC_DAPM_ENUM_EXT("Source", g12a_toacodec_mux_enum, |
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snd_soc_dapm_get_enum_double, |
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g12a_toacodec_mux_put_enum); |
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static const struct snd_kcontrol_new g12a_toacodec_out_enable = |
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SOC_DAPM_SINGLE_AUTODISABLE("Switch", TOACODEC_CTRL0, |
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CTRL0_ENABLE_SHIFT, 1, 0); |
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static const struct snd_soc_dapm_widget g12a_toacodec_widgets[] = { |
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SND_SOC_DAPM_MUX("SRC", SND_SOC_NOPM, 0, 0, |
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&g12a_toacodec_mux), |
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SND_SOC_DAPM_SWITCH("OUT EN", SND_SOC_NOPM, 0, 0, |
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&g12a_toacodec_out_enable), |
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}; |
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static int g12a_toacodec_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 meson_codec_glue_input *data; |
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int ret; |
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ret = meson_codec_glue_input_hw_params(substream, params, dai); |
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if (ret) |
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return ret; |
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/* The glue will provide 1 lane out of the 4 to the output */ |
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data = meson_codec_glue_input_get_data(dai); |
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data->params.channels_min = min_t(unsigned int, TOACODEC_OUT_CHMAX, |
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data->params.channels_min); |
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data->params.channels_max = min_t(unsigned int, TOACODEC_OUT_CHMAX, |
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data->params.channels_max); |
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return 0; |
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} |
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static const struct snd_soc_dai_ops g12a_toacodec_input_ops = { |
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.hw_params = g12a_toacodec_input_hw_params, |
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.set_fmt = meson_codec_glue_input_set_fmt, |
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}; |
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static const struct snd_soc_dai_ops g12a_toacodec_output_ops = { |
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.startup = meson_codec_glue_output_startup, |
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}; |
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#define TOACODEC_STREAM(xname, xsuffix, 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 = 5512, \ |
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.rate_max = 192000, \ |
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.formats = AXG_TDM_FORMATS, \ |
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} |
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#define TOACODEC_INPUT(xname, xid) { \ |
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.name = xname, \ |
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.id = (xid), \ |
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.playback = TOACODEC_STREAM(xname, "Playback", 8), \ |
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.ops = &g12a_toacodec_input_ops, \ |
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.probe = meson_codec_glue_input_dai_probe, \ |
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.remove = meson_codec_glue_input_dai_remove, \ |
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} |
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#define TOACODEC_OUTPUT(xname, xid) { \ |
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.name = xname, \ |
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.id = (xid), \ |
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.capture = TOACODEC_STREAM(xname, "Capture", TOACODEC_OUT_CHMAX), \ |
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.ops = &g12a_toacodec_output_ops, \ |
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} |
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static struct snd_soc_dai_driver g12a_toacodec_dai_drv[] = { |
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TOACODEC_INPUT("IN A", TOACODEC_IN_A), |
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TOACODEC_INPUT("IN B", TOACODEC_IN_B), |
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TOACODEC_INPUT("IN C", TOACODEC_IN_C), |
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TOACODEC_OUTPUT("OUT", TOACODEC_OUT), |
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}; |
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static int g12a_toacodec_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, TOACODEC_CTRL0, |
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CTRL0_BLK_CAP_INV); |
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} |
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static const struct snd_soc_dapm_route g12a_toacodec_routes[] = { |
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{ "SRC", "I2S A", "IN A Playback" }, |
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{ "SRC", "I2S B", "IN B Playback" }, |
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{ "SRC", "I2S C", "IN C Playback" }, |
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{ "OUT EN", "Switch", "SRC" }, |
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{ "OUT Capture", NULL, "OUT EN" }, |
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}; |
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static const struct snd_kcontrol_new g12a_toacodec_controls[] = { |
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SOC_SINGLE("Lane Select", TOACODEC_CTRL0, CTRL0_LANE_SEL, 3, 0), |
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}; |
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static const struct snd_soc_component_driver g12a_toacodec_component_drv = { |
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.probe = g12a_toacodec_component_probe, |
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.controls = g12a_toacodec_controls, |
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.num_controls = ARRAY_SIZE(g12a_toacodec_controls), |
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.dapm_widgets = g12a_toacodec_widgets, |
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.num_dapm_widgets = ARRAY_SIZE(g12a_toacodec_widgets), |
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.dapm_routes = g12a_toacodec_routes, |
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.num_dapm_routes = ARRAY_SIZE(g12a_toacodec_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_toacodec_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_toacodec_of_match[] = { |
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{ .compatible = "amlogic,g12a-toacodec", }, |
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{} |
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}; |
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MODULE_DEVICE_TABLE(of, g12a_toacodec_of_match); |
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static int g12a_toacodec_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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int ret; |
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ret = device_reset(dev); |
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if (ret) |
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return ret; |
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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_toacodec_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_toacodec_component_drv, g12a_toacodec_dai_drv, |
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ARRAY_SIZE(g12a_toacodec_dai_drv)); |
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} |
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static struct platform_driver g12a_toacodec_pdrv = { |
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.driver = { |
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.name = G12A_TOACODEC_DRV_NAME, |
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.of_match_table = g12a_toacodec_of_match, |
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}, |
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.probe = g12a_toacodec_probe, |
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}; |
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module_platform_driver(g12a_toacodec_pdrv); |
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MODULE_AUTHOR("Jerome Brunet <[email protected]>"); |
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MODULE_DESCRIPTION("Amlogic G12a To Internal DAC Codec Driver"); |
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MODULE_LICENSE("GPL v2");
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