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-rw-r--r--sound/soc/meson/g12a-toacodec.c358
1 files changed, 358 insertions, 0 deletions
diff --git a/sound/soc/meson/g12a-toacodec.c b/sound/soc/meson/g12a-toacodec.c
new file mode 100644
index 0000000000..531bb8707a
--- /dev/null
+++ b/sound/soc/meson/g12a-toacodec.c
@@ -0,0 +1,358 @@
+// SPDX-License-Identifier: GPL-2.0
+//
+// Copyright (c) 2020 BayLibre, SAS.
+// Author: Jerome Brunet <jbrunet@baylibre.com>
+
+#include <linux/bitfield.h>
+#include <linux/clk.h>
+#include <linux/module.h>
+#include <sound/pcm_params.h>
+#include <linux/regmap.h>
+#include <linux/regulator/consumer.h>
+#include <linux/reset.h>
+#include <sound/soc.h>
+#include <sound/soc-dai.h>
+
+#include <dt-bindings/sound/meson-g12a-toacodec.h>
+#include "axg-tdm.h"
+#include "meson-codec-glue.h"
+
+#define G12A_TOACODEC_DRV_NAME "g12a-toacodec"
+
+#define TOACODEC_CTRL0 0x0
+#define CTRL0_ENABLE_SHIFT 31
+#define CTRL0_DAT_SEL_SM1_MSB 19
+#define CTRL0_DAT_SEL_SM1_LSB 18
+#define CTRL0_DAT_SEL_MSB 15
+#define CTRL0_DAT_SEL_LSB 14
+#define CTRL0_LANE_SEL_SM1 16
+#define CTRL0_LANE_SEL 12
+#define CTRL0_LRCLK_SEL_SM1_MSB 14
+#define CTRL0_LRCLK_SEL_SM1_LSB 12
+#define CTRL0_LRCLK_SEL_MSB 9
+#define CTRL0_LRCLK_SEL_LSB 8
+#define CTRL0_LRCLK_INV_SM1 BIT(10)
+#define CTRL0_BLK_CAP_INV_SM1 BIT(9)
+#define CTRL0_BLK_CAP_INV BIT(7)
+#define CTRL0_BCLK_O_INV_SM1 BIT(8)
+#define CTRL0_BCLK_O_INV BIT(6)
+#define CTRL0_BCLK_SEL_SM1_MSB 6
+#define CTRL0_BCLK_SEL_MSB 5
+#define CTRL0_BCLK_SEL_LSB 4
+#define CTRL0_MCLK_SEL GENMASK(2, 0)
+
+#define TOACODEC_OUT_CHMAX 2
+
+struct g12a_toacodec {
+ struct regmap_field *field_dat_sel;
+ struct regmap_field *field_lrclk_sel;
+ struct regmap_field *field_bclk_sel;
+};
+
+struct g12a_toacodec_match_data {
+ const struct snd_soc_component_driver *component_drv;
+ struct reg_field field_dat_sel;
+ struct reg_field field_lrclk_sel;
+ struct reg_field field_bclk_sel;
+};
+
+static const char * const g12a_toacodec_mux_texts[] = {
+ "I2S A", "I2S B", "I2S C",
+};
+
+static int g12a_toacodec_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 g12a_toacodec *priv = snd_soc_component_get_drvdata(component);
+ 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, reg;
+
+ if (ucontrol->value.enumerated.item[0] >= e->items)
+ return -EINVAL;
+
+ mux = snd_soc_enum_item_to_val(e, ucontrol->value.enumerated.item[0]);
+ regmap_field_read(priv->field_dat_sel, &reg);
+
+ if (mux == reg)
+ return 0;
+
+ /* Force disconnect of the mux while updating */
+ snd_soc_dapm_mux_update_power(dapm, kcontrol, 0, NULL, NULL);
+
+ regmap_field_write(priv->field_dat_sel, mux);
+ regmap_field_write(priv->field_lrclk_sel, mux);
+ regmap_field_write(priv->field_bclk_sel, mux);
+
+ /*
+ * FIXME:
+ * On this soc, the glue gets the MCLK directly from the clock
+ * controller instead of going the through the TDM interface.
+ *
+ * Here we assume interface A uses clock A, etc ... While it is
+ * true for now, it could be different. Instead the glue should
+ * find out the clock used by the interface and select the same
+ * source. For that, we will need regmap backed clock mux which
+ * is a work in progress
+ */
+ snd_soc_component_update_bits(component, e->reg,
+ CTRL0_MCLK_SEL,
+ FIELD_PREP(CTRL0_MCLK_SEL, mux));
+
+ snd_soc_dapm_mux_update_power(dapm, kcontrol, mux, e, NULL);
+
+ return 1;
+}
+
+static SOC_ENUM_SINGLE_DECL(g12a_toacodec_mux_enum, TOACODEC_CTRL0,
+ CTRL0_DAT_SEL_LSB,
+ g12a_toacodec_mux_texts);
+
+static SOC_ENUM_SINGLE_DECL(sm1_toacodec_mux_enum, TOACODEC_CTRL0,
+ CTRL0_DAT_SEL_SM1_LSB,
+ g12a_toacodec_mux_texts);
+
+static const struct snd_kcontrol_new g12a_toacodec_mux =
+ SOC_DAPM_ENUM_EXT("Source", g12a_toacodec_mux_enum,
+ snd_soc_dapm_get_enum_double,
+ g12a_toacodec_mux_put_enum);
+
+static const struct snd_kcontrol_new sm1_toacodec_mux =
+ SOC_DAPM_ENUM_EXT("Source", sm1_toacodec_mux_enum,
+ snd_soc_dapm_get_enum_double,
+ g12a_toacodec_mux_put_enum);
+
+static const struct snd_kcontrol_new g12a_toacodec_out_enable =
+ SOC_DAPM_SINGLE_AUTODISABLE("Switch", TOACODEC_CTRL0,
+ CTRL0_ENABLE_SHIFT, 1, 0);
+
+static const struct snd_soc_dapm_widget g12a_toacodec_widgets[] = {
+ SND_SOC_DAPM_MUX("SRC", SND_SOC_NOPM, 0, 0,
+ &g12a_toacodec_mux),
+ SND_SOC_DAPM_SWITCH("OUT EN", SND_SOC_NOPM, 0, 0,
+ &g12a_toacodec_out_enable),
+};
+
+static const struct snd_soc_dapm_widget sm1_toacodec_widgets[] = {
+ SND_SOC_DAPM_MUX("SRC", SND_SOC_NOPM, 0, 0,
+ &sm1_toacodec_mux),
+ SND_SOC_DAPM_SWITCH("OUT EN", SND_SOC_NOPM, 0, 0,
+ &g12a_toacodec_out_enable),
+};
+
+static int g12a_toacodec_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, TOACODEC_OUT_CHMAX,
+ data->params.channels_min);
+ data->params.channels_max = min_t(unsigned int, TOACODEC_OUT_CHMAX,
+ data->params.channels_max);
+
+ return 0;
+}
+
+static const struct snd_soc_dai_ops g12a_toacodec_input_ops = {
+ .probe = meson_codec_glue_input_dai_probe,
+ .remove = meson_codec_glue_input_dai_remove,
+ .hw_params = g12a_toacodec_input_hw_params,
+ .set_fmt = meson_codec_glue_input_set_fmt,
+};
+
+static const struct snd_soc_dai_ops g12a_toacodec_output_ops = {
+ .startup = meson_codec_glue_output_startup,
+};
+
+#define TOACODEC_STREAM(xname, xsuffix, xchmax) \
+{ \
+ .stream_name = xname " " xsuffix, \
+ .channels_min = 1, \
+ .channels_max = (xchmax), \
+ .rate_min = 5512, \
+ .rate_max = 192000, \
+ .formats = AXG_TDM_FORMATS, \
+}
+
+#define TOACODEC_INPUT(xname, xid) { \
+ .name = xname, \
+ .id = (xid), \
+ .playback = TOACODEC_STREAM(xname, "Playback", 8), \
+ .ops = &g12a_toacodec_input_ops, \
+}
+
+#define TOACODEC_OUTPUT(xname, xid) { \
+ .name = xname, \
+ .id = (xid), \
+ .capture = TOACODEC_STREAM(xname, "Capture", TOACODEC_OUT_CHMAX), \
+ .ops = &g12a_toacodec_output_ops, \
+}
+
+static struct snd_soc_dai_driver g12a_toacodec_dai_drv[] = {
+ TOACODEC_INPUT("IN A", TOACODEC_IN_A),
+ TOACODEC_INPUT("IN B", TOACODEC_IN_B),
+ TOACODEC_INPUT("IN C", TOACODEC_IN_C),
+ TOACODEC_OUTPUT("OUT", TOACODEC_OUT),
+};
+
+static int g12a_toacodec_component_probe(struct snd_soc_component *c)
+{
+ /* Initialize the static clock parameters */
+ return snd_soc_component_write(c, TOACODEC_CTRL0,
+ CTRL0_BLK_CAP_INV);
+}
+
+static int sm1_toacodec_component_probe(struct snd_soc_component *c)
+{
+ /* Initialize the static clock parameters */
+ return snd_soc_component_write(c, TOACODEC_CTRL0,
+ CTRL0_BLK_CAP_INV_SM1);
+}
+
+static const struct snd_soc_dapm_route g12a_toacodec_routes[] = {
+ { "SRC", "I2S A", "IN A Playback" },
+ { "SRC", "I2S B", "IN B Playback" },
+ { "SRC", "I2S C", "IN C Playback" },
+ { "OUT EN", "Switch", "SRC" },
+ { "OUT Capture", NULL, "OUT EN" },
+};
+
+static const struct snd_kcontrol_new g12a_toacodec_controls[] = {
+ SOC_SINGLE("Lane Select", TOACODEC_CTRL0, CTRL0_LANE_SEL, 3, 0),
+};
+
+static const struct snd_kcontrol_new sm1_toacodec_controls[] = {
+ SOC_SINGLE("Lane Select", TOACODEC_CTRL0, CTRL0_LANE_SEL_SM1, 3, 0),
+};
+
+static const struct snd_soc_component_driver g12a_toacodec_component_drv = {
+ .probe = g12a_toacodec_component_probe,
+ .controls = g12a_toacodec_controls,
+ .num_controls = ARRAY_SIZE(g12a_toacodec_controls),
+ .dapm_widgets = g12a_toacodec_widgets,
+ .num_dapm_widgets = ARRAY_SIZE(g12a_toacodec_widgets),
+ .dapm_routes = g12a_toacodec_routes,
+ .num_dapm_routes = ARRAY_SIZE(g12a_toacodec_routes),
+ .endianness = 1,
+};
+
+static const struct snd_soc_component_driver sm1_toacodec_component_drv = {
+ .probe = sm1_toacodec_component_probe,
+ .controls = sm1_toacodec_controls,
+ .num_controls = ARRAY_SIZE(sm1_toacodec_controls),
+ .dapm_widgets = sm1_toacodec_widgets,
+ .num_dapm_widgets = ARRAY_SIZE(sm1_toacodec_widgets),
+ .dapm_routes = g12a_toacodec_routes,
+ .num_dapm_routes = ARRAY_SIZE(g12a_toacodec_routes),
+ .endianness = 1,
+};
+
+static const struct regmap_config g12a_toacodec_regmap_cfg = {
+ .reg_bits = 32,
+ .val_bits = 32,
+ .reg_stride = 4,
+};
+
+static const struct g12a_toacodec_match_data g12a_toacodec_match_data = {
+ .component_drv = &g12a_toacodec_component_drv,
+ .field_dat_sel = REG_FIELD(TOACODEC_CTRL0, 14, 15),
+ .field_lrclk_sel = REG_FIELD(TOACODEC_CTRL0, 8, 9),
+ .field_bclk_sel = REG_FIELD(TOACODEC_CTRL0, 4, 5),
+};
+
+static const struct g12a_toacodec_match_data sm1_toacodec_match_data = {
+ .component_drv = &sm1_toacodec_component_drv,
+ .field_dat_sel = REG_FIELD(TOACODEC_CTRL0, 18, 19),
+ .field_lrclk_sel = REG_FIELD(TOACODEC_CTRL0, 12, 14),
+ .field_bclk_sel = REG_FIELD(TOACODEC_CTRL0, 4, 6),
+};
+
+static const struct of_device_id g12a_toacodec_of_match[] = {
+ {
+ .compatible = "amlogic,g12a-toacodec",
+ .data = &g12a_toacodec_match_data,
+ },
+ {
+ .compatible = "amlogic,sm1-toacodec",
+ .data = &sm1_toacodec_match_data,
+ },
+ {}
+};
+MODULE_DEVICE_TABLE(of, g12a_toacodec_of_match);
+
+static int g12a_toacodec_probe(struct platform_device *pdev)
+{
+ const struct g12a_toacodec_match_data *data;
+ struct device *dev = &pdev->dev;
+ struct g12a_toacodec *priv;
+ void __iomem *regs;
+ struct regmap *map;
+ int ret;
+
+ data = device_get_match_data(dev);
+ if (!data) {
+ dev_err(dev, "failed to match device\n");
+ return -ENODEV;
+ }
+
+ priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
+ if (!priv)
+ return -ENOMEM;
+
+ platform_set_drvdata(pdev, priv);
+
+ ret = device_reset(dev);
+ if (ret)
+ return ret;
+
+ regs = devm_platform_ioremap_resource(pdev, 0);
+ if (IS_ERR(regs))
+ return PTR_ERR(regs);
+
+ map = devm_regmap_init_mmio(dev, regs, &g12a_toacodec_regmap_cfg);
+ if (IS_ERR(map)) {
+ dev_err(dev, "failed to init regmap: %ld\n",
+ PTR_ERR(map));
+ return PTR_ERR(map);
+ }
+
+ priv->field_dat_sel = devm_regmap_field_alloc(dev, map, data->field_dat_sel);
+ if (IS_ERR(priv->field_dat_sel))
+ return PTR_ERR(priv->field_dat_sel);
+
+ priv->field_lrclk_sel = devm_regmap_field_alloc(dev, map, data->field_lrclk_sel);
+ if (IS_ERR(priv->field_lrclk_sel))
+ return PTR_ERR(priv->field_lrclk_sel);
+
+ priv->field_bclk_sel = devm_regmap_field_alloc(dev, map, data->field_bclk_sel);
+ if (IS_ERR(priv->field_bclk_sel))
+ return PTR_ERR(priv->field_bclk_sel);
+
+ return devm_snd_soc_register_component(dev,
+ data->component_drv, g12a_toacodec_dai_drv,
+ ARRAY_SIZE(g12a_toacodec_dai_drv));
+}
+
+static struct platform_driver g12a_toacodec_pdrv = {
+ .driver = {
+ .name = G12A_TOACODEC_DRV_NAME,
+ .of_match_table = g12a_toacodec_of_match,
+ },
+ .probe = g12a_toacodec_probe,
+};
+module_platform_driver(g12a_toacodec_pdrv);
+
+MODULE_AUTHOR("Jerome Brunet <jbrunet@baylibre.com>");
+MODULE_DESCRIPTION("Amlogic G12a To Internal DAC Codec Driver");
+MODULE_LICENSE("GPL v2");