| // SPDX-License-Identifier: GPL-2.0 |
| // |
| // Copyright (c) 2019 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/reset.h> |
| #include <sound/soc.h> |
| #include <sound/soc-dai.h> |
| |
| #include <dt-bindings/sound/meson-g12a-tohdmitx.h> |
| #include "meson-codec-glue.h" |
| |
| #define G12A_TOHDMITX_DRV_NAME "g12a-tohdmitx" |
| |
| #define TOHDMITX_CTRL0 0x0 |
| #define CTRL0_ENABLE_SHIFT 31 |
| #define CTRL0_I2S_DAT_SEL_SHIFT 12 |
| #define CTRL0_I2S_DAT_SEL (0x3 << CTRL0_I2S_DAT_SEL_SHIFT) |
| #define CTRL0_I2S_LRCLK_SEL GENMASK(9, 8) |
| #define CTRL0_I2S_BLK_CAP_INV BIT(7) |
| #define CTRL0_I2S_BCLK_O_INV BIT(6) |
| #define CTRL0_I2S_BCLK_SEL GENMASK(5, 4) |
| #define CTRL0_SPDIF_CLK_CAP_INV BIT(3) |
| #define CTRL0_SPDIF_CLK_O_INV BIT(2) |
| #define CTRL0_SPDIF_SEL_SHIFT 1 |
| #define CTRL0_SPDIF_SEL (0x1 << CTRL0_SPDIF_SEL_SHIFT) |
| #define CTRL0_SPDIF_CLK_SEL BIT(0) |
| |
| static const char * const g12a_tohdmitx_i2s_mux_texts[] = { |
| "I2S A", "I2S B", "I2S C", |
| }; |
| |
| static int g12a_tohdmitx_i2s_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, |
| CTRL0_I2S_DAT_SEL, |
| FIELD_PREP(CTRL0_I2S_DAT_SEL, |
| 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, |
| CTRL0_I2S_DAT_SEL | |
| CTRL0_I2S_LRCLK_SEL | |
| CTRL0_I2S_BCLK_SEL, |
| FIELD_PREP(CTRL0_I2S_DAT_SEL, mux) | |
| FIELD_PREP(CTRL0_I2S_LRCLK_SEL, mux) | |
| FIELD_PREP(CTRL0_I2S_BCLK_SEL, mux)); |
| |
| snd_soc_dapm_mux_update_power(dapm, kcontrol, mux, e, NULL); |
| |
| return 0; |
| } |
| |
| static SOC_ENUM_SINGLE_DECL(g12a_tohdmitx_i2s_mux_enum, TOHDMITX_CTRL0, |
| CTRL0_I2S_DAT_SEL_SHIFT, |
| g12a_tohdmitx_i2s_mux_texts); |
| |
| static const struct snd_kcontrol_new g12a_tohdmitx_i2s_mux = |
| SOC_DAPM_ENUM_EXT("I2S Source", g12a_tohdmitx_i2s_mux_enum, |
| snd_soc_dapm_get_enum_double, |
| g12a_tohdmitx_i2s_mux_put_enum); |
| |
| static const char * const g12a_tohdmitx_spdif_mux_texts[] = { |
| "SPDIF A", "SPDIF B", |
| }; |
| |
| static int g12a_tohdmitx_spdif_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, TOHDMITX_CTRL0, |
| CTRL0_SPDIF_SEL, |
| FIELD_PREP(CTRL0_SPDIF_SEL, 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, TOHDMITX_CTRL0, |
| CTRL0_SPDIF_SEL | |
| CTRL0_SPDIF_CLK_SEL, |
| FIELD_PREP(CTRL0_SPDIF_SEL, mux) | |
| FIELD_PREP(CTRL0_SPDIF_CLK_SEL, mux)); |
| |
| snd_soc_dapm_mux_update_power(dapm, kcontrol, mux, e, NULL); |
| |
| return 0; |
| } |
| |
| static SOC_ENUM_SINGLE_DECL(g12a_tohdmitx_spdif_mux_enum, TOHDMITX_CTRL0, |
| CTRL0_SPDIF_SEL_SHIFT, |
| g12a_tohdmitx_spdif_mux_texts); |
| |
| static const struct snd_kcontrol_new g12a_tohdmitx_spdif_mux = |
| SOC_DAPM_ENUM_EXT("SPDIF Source", g12a_tohdmitx_spdif_mux_enum, |
| snd_soc_dapm_get_enum_double, |
| g12a_tohdmitx_spdif_mux_put_enum); |
| |
| static const struct snd_kcontrol_new g12a_tohdmitx_out_enable = |
| SOC_DAPM_SINGLE_AUTODISABLE("Switch", TOHDMITX_CTRL0, |
| CTRL0_ENABLE_SHIFT, 1, 0); |
| |
| static const struct snd_soc_dapm_widget g12a_tohdmitx_widgets[] = { |
| SND_SOC_DAPM_MUX("I2S SRC", SND_SOC_NOPM, 0, 0, |
| &g12a_tohdmitx_i2s_mux), |
| SND_SOC_DAPM_SWITCH("I2S OUT EN", SND_SOC_NOPM, 0, 0, |
| &g12a_tohdmitx_out_enable), |
| SND_SOC_DAPM_MUX("SPDIF SRC", SND_SOC_NOPM, 0, 0, |
| &g12a_tohdmitx_spdif_mux), |
| SND_SOC_DAPM_SWITCH("SPDIF OUT EN", SND_SOC_NOPM, 0, 0, |
| &g12a_tohdmitx_out_enable), |
| }; |
| |
| static const struct snd_soc_dai_ops g12a_tohdmitx_input_ops = { |
| .hw_params = meson_codec_glue_input_hw_params, |
| .set_fmt = meson_codec_glue_input_set_fmt, |
| }; |
| |
| static const struct snd_soc_dai_ops g12a_tohdmitx_output_ops = { |
| .startup = meson_codec_glue_output_startup, |
| }; |
| |
| #define TOHDMITX_SPDIF_FORMATS \ |
| (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE | \ |
| SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S24_LE) |
| |
| #define TOHDMITX_I2S_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 TOHDMITX_STREAM(xname, xsuffix, xfmt, xchmax) \ |
| { \ |
| .stream_name = xname " " xsuffix, \ |
| .channels_min = 1, \ |
| .channels_max = (xchmax), \ |
| .rate_min = 8000, \ |
| .rate_max = 192000, \ |
| .formats = (xfmt), \ |
| } |
| |
| #define TOHDMITX_IN(xname, xid, xfmt, xchmax) { \ |
| .name = xname, \ |
| .id = (xid), \ |
| .playback = TOHDMITX_STREAM(xname, "Playback", xfmt, xchmax), \ |
| .ops = &g12a_tohdmitx_input_ops, \ |
| .probe = meson_codec_glue_input_dai_probe, \ |
| .remove = meson_codec_glue_input_dai_remove, \ |
| } |
| |
| #define TOHDMITX_OUT(xname, xid, xfmt, xchmax) { \ |
| .name = xname, \ |
| .id = (xid), \ |
| .capture = TOHDMITX_STREAM(xname, "Capture", xfmt, xchmax), \ |
| .ops = &g12a_tohdmitx_output_ops, \ |
| } |
| |
| static struct snd_soc_dai_driver g12a_tohdmitx_dai_drv[] = { |
| TOHDMITX_IN("I2S IN A", TOHDMITX_I2S_IN_A, |
| TOHDMITX_I2S_FORMATS, 8), |
| TOHDMITX_IN("I2S IN B", TOHDMITX_I2S_IN_B, |
| TOHDMITX_I2S_FORMATS, 8), |
| TOHDMITX_IN("I2S IN C", TOHDMITX_I2S_IN_C, |
| TOHDMITX_I2S_FORMATS, 8), |
| TOHDMITX_OUT("I2S OUT", TOHDMITX_I2S_OUT, |
| TOHDMITX_I2S_FORMATS, 8), |
| TOHDMITX_IN("SPDIF IN A", TOHDMITX_SPDIF_IN_A, |
| TOHDMITX_SPDIF_FORMATS, 2), |
| TOHDMITX_IN("SPDIF IN B", TOHDMITX_SPDIF_IN_B, |
| TOHDMITX_SPDIF_FORMATS, 2), |
| TOHDMITX_OUT("SPDIF OUT", TOHDMITX_SPDIF_OUT, |
| TOHDMITX_SPDIF_FORMATS, 2), |
| }; |
| |
| static int g12a_tohdmi_component_probe(struct snd_soc_component *c) |
| { |
| /* Initialize the static clock parameters */ |
| return snd_soc_component_write(c, TOHDMITX_CTRL0, |
| CTRL0_I2S_BLK_CAP_INV | CTRL0_SPDIF_CLK_CAP_INV); |
| } |
| |
| static const struct snd_soc_dapm_route g12a_tohdmitx_routes[] = { |
| { "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; |
| void __iomem *regs; |
| struct regmap *map; |
| int ret; |
| |
| 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_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"); |