// SPDX-License-Identifier: GPL-2.0 // // Copyright (c) 2020 BayLibre, SAS. // Author: Jerome Brunet #include #include #include #include #include #include #include #include #include #include #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_SHIFT 14 #define CTRL0_DAT_SEL (0x3 << CTRL0_DAT_SEL_SHIFT) #define CTRL0_LANE_SEL 12 #define CTRL0_LRCLK_SEL GENMASK(9, 8) #define CTRL0_BLK_CAP_INV BIT(7) #define CTRL0_BCLK_O_INV BIT(6) #define CTRL0_BCLK_SEL GENMASK(5, 4) #define CTRL0_MCLK_SEL GENMASK(2, 0) #define TOACODEC_OUT_CHMAX 2 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 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; if (ucontrol->value.enumerated.item[0] >= e->items) return -EINVAL; mux = snd_soc_enum_item_to_val(e, ucontrol->value.enumerated.item[0]); changed = snd_soc_component_test_bits(component, e->reg, CTRL0_DAT_SEL, FIELD_PREP(CTRL0_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_DAT_SEL | CTRL0_LRCLK_SEL | CTRL0_BCLK_SEL, FIELD_PREP(CTRL0_DAT_SEL, mux) | FIELD_PREP(CTRL0_LRCLK_SEL, mux) | FIELD_PREP(CTRL0_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_SHIFT, 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 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 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 = { .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, \ .probe = meson_codec_glue_input_dai_probe, \ .remove = meson_codec_glue_input_dai_remove, \ } #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 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_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, .non_legacy_dai_naming = 1, }; static const struct regmap_config g12a_toacodec_regmap_cfg = { .reg_bits = 32, .val_bits = 32, .reg_stride = 4, }; static const struct of_device_id g12a_toacodec_of_match[] = { { .compatible = "amlogic,g12a-toacodec", }, {} }; MODULE_DEVICE_TABLE(of, g12a_toacodec_of_match); static int g12a_toacodec_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_toacodec_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_toacodec_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 "); MODULE_DESCRIPTION("Amlogic G12a To Internal DAC Codec Driver"); MODULE_LICENSE("GPL v2");