1 // SPDX-License-Identifier: GPL-2.0 2 // 3 // Copyright (c) 2019 BayLibre, SAS. 4 // Author: Jerome Brunet <jbrunet@baylibre.com> 5 6 #include <linux/bitfield.h> 7 #include <linux/clk.h> 8 #include <linux/module.h> 9 #include <sound/pcm_params.h> 10 #include <linux/regmap.h> 11 #include <linux/reset.h> 12 #include <sound/soc.h> 13 #include <sound/soc-dai.h> 14 15 #include <dt-bindings/sound/meson-g12a-tohdmitx.h> 16 #include "meson-codec-glue.h" 17 18 #define G12A_TOHDMITX_DRV_NAME "g12a-tohdmitx" 19 20 #define TOHDMITX_CTRL0 0x0 21 #define CTRL0_ENABLE_SHIFT 31 22 #define CTRL0_I2S_DAT_SEL_SHIFT 12 23 #define CTRL0_I2S_DAT_SEL (0x3 << CTRL0_I2S_DAT_SEL_SHIFT) 24 #define CTRL0_I2S_LRCLK_SEL GENMASK(9, 8) 25 #define CTRL0_I2S_BLK_CAP_INV BIT(7) 26 #define CTRL0_I2S_BCLK_O_INV BIT(6) 27 #define CTRL0_I2S_BCLK_SEL GENMASK(5, 4) 28 #define CTRL0_SPDIF_CLK_CAP_INV BIT(3) 29 #define CTRL0_SPDIF_CLK_O_INV BIT(2) 30 #define CTRL0_SPDIF_SEL_SHIFT 1 31 #define CTRL0_SPDIF_SEL (0x1 << CTRL0_SPDIF_SEL_SHIFT) 32 #define CTRL0_SPDIF_CLK_SEL BIT(0) 33 34 static const char * const g12a_tohdmitx_i2s_mux_texts[] = { 35 "I2S A", "I2S B", "I2S C", 36 }; 37 38 static int g12a_tohdmitx_i2s_mux_put_enum(struct snd_kcontrol *kcontrol, 39 struct snd_ctl_elem_value *ucontrol) 40 { 41 struct snd_soc_component *component = 42 snd_soc_dapm_kcontrol_component(kcontrol); 43 struct snd_soc_dapm_context *dapm = 44 snd_soc_dapm_kcontrol_dapm(kcontrol); 45 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; 46 unsigned int mux, changed; 47 48 mux = snd_soc_enum_item_to_val(e, ucontrol->value.enumerated.item[0]); 49 changed = snd_soc_component_test_bits(component, e->reg, 50 CTRL0_I2S_DAT_SEL, 51 FIELD_PREP(CTRL0_I2S_DAT_SEL, 52 mux)); 53 54 if (!changed) 55 return 0; 56 57 /* Force disconnect of the mux while updating */ 58 snd_soc_dapm_mux_update_power(dapm, kcontrol, 0, NULL, NULL); 59 60 snd_soc_component_update_bits(component, e->reg, 61 CTRL0_I2S_DAT_SEL | 62 CTRL0_I2S_LRCLK_SEL | 63 CTRL0_I2S_BCLK_SEL, 64 FIELD_PREP(CTRL0_I2S_DAT_SEL, mux) | 65 FIELD_PREP(CTRL0_I2S_LRCLK_SEL, mux) | 66 FIELD_PREP(CTRL0_I2S_BCLK_SEL, mux)); 67 68 snd_soc_dapm_mux_update_power(dapm, kcontrol, mux, e, NULL); 69 70 return 1; 71 } 72 73 static SOC_ENUM_SINGLE_DECL(g12a_tohdmitx_i2s_mux_enum, TOHDMITX_CTRL0, 74 CTRL0_I2S_DAT_SEL_SHIFT, 75 g12a_tohdmitx_i2s_mux_texts); 76 77 static const struct snd_kcontrol_new g12a_tohdmitx_i2s_mux = 78 SOC_DAPM_ENUM_EXT("I2S Source", g12a_tohdmitx_i2s_mux_enum, 79 snd_soc_dapm_get_enum_double, 80 g12a_tohdmitx_i2s_mux_put_enum); 81 82 static const char * const g12a_tohdmitx_spdif_mux_texts[] = { 83 "SPDIF A", "SPDIF B", 84 }; 85 86 static int g12a_tohdmitx_spdif_mux_put_enum(struct snd_kcontrol *kcontrol, 87 struct snd_ctl_elem_value *ucontrol) 88 { 89 struct snd_soc_component *component = 90 snd_soc_dapm_kcontrol_component(kcontrol); 91 struct snd_soc_dapm_context *dapm = 92 snd_soc_dapm_kcontrol_dapm(kcontrol); 93 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; 94 unsigned int mux, changed; 95 96 mux = snd_soc_enum_item_to_val(e, ucontrol->value.enumerated.item[0]); 97 changed = snd_soc_component_test_bits(component, TOHDMITX_CTRL0, 98 CTRL0_SPDIF_SEL, 99 FIELD_PREP(CTRL0_SPDIF_SEL, mux)); 100 101 if (!changed) 102 return 0; 103 104 /* Force disconnect of the mux while updating */ 105 snd_soc_dapm_mux_update_power(dapm, kcontrol, 0, NULL, NULL); 106 107 snd_soc_component_update_bits(component, TOHDMITX_CTRL0, 108 CTRL0_SPDIF_SEL | 109 CTRL0_SPDIF_CLK_SEL, 110 FIELD_PREP(CTRL0_SPDIF_SEL, mux) | 111 FIELD_PREP(CTRL0_SPDIF_CLK_SEL, mux)); 112 113 snd_soc_dapm_mux_update_power(dapm, kcontrol, mux, e, NULL); 114 115 return 0; 116 } 117 118 static SOC_ENUM_SINGLE_DECL(g12a_tohdmitx_spdif_mux_enum, TOHDMITX_CTRL0, 119 CTRL0_SPDIF_SEL_SHIFT, 120 g12a_tohdmitx_spdif_mux_texts); 121 122 static const struct snd_kcontrol_new g12a_tohdmitx_spdif_mux = 123 SOC_DAPM_ENUM_EXT("SPDIF Source", g12a_tohdmitx_spdif_mux_enum, 124 snd_soc_dapm_get_enum_double, 125 g12a_tohdmitx_spdif_mux_put_enum); 126 127 static const struct snd_kcontrol_new g12a_tohdmitx_out_enable = 128 SOC_DAPM_SINGLE_AUTODISABLE("Switch", TOHDMITX_CTRL0, 129 CTRL0_ENABLE_SHIFT, 1, 0); 130 131 static const struct snd_soc_dapm_widget g12a_tohdmitx_widgets[] = { 132 SND_SOC_DAPM_MUX("I2S SRC", SND_SOC_NOPM, 0, 0, 133 &g12a_tohdmitx_i2s_mux), 134 SND_SOC_DAPM_SWITCH("I2S OUT EN", SND_SOC_NOPM, 0, 0, 135 &g12a_tohdmitx_out_enable), 136 SND_SOC_DAPM_MUX("SPDIF SRC", SND_SOC_NOPM, 0, 0, 137 &g12a_tohdmitx_spdif_mux), 138 SND_SOC_DAPM_SWITCH("SPDIF OUT EN", SND_SOC_NOPM, 0, 0, 139 &g12a_tohdmitx_out_enable), 140 }; 141 142 static const struct snd_soc_dai_ops g12a_tohdmitx_input_ops = { 143 .hw_params = meson_codec_glue_input_hw_params, 144 .set_fmt = meson_codec_glue_input_set_fmt, 145 }; 146 147 static const struct snd_soc_dai_ops g12a_tohdmitx_output_ops = { 148 .startup = meson_codec_glue_output_startup, 149 }; 150 151 #define TOHDMITX_SPDIF_FORMATS \ 152 (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE | \ 153 SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S24_LE) 154 155 #define TOHDMITX_I2S_FORMATS \ 156 (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE | \ 157 SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S24_LE | \ 158 SNDRV_PCM_FMTBIT_S32_LE) 159 160 #define TOHDMITX_STREAM(xname, xsuffix, xfmt, xchmax) \ 161 { \ 162 .stream_name = xname " " xsuffix, \ 163 .channels_min = 1, \ 164 .channels_max = (xchmax), \ 165 .rate_min = 8000, \ 166 .rate_max = 192000, \ 167 .formats = (xfmt), \ 168 } 169 170 #define TOHDMITX_IN(xname, xid, xfmt, xchmax) { \ 171 .name = xname, \ 172 .id = (xid), \ 173 .playback = TOHDMITX_STREAM(xname, "Playback", xfmt, xchmax), \ 174 .ops = &g12a_tohdmitx_input_ops, \ 175 .probe = meson_codec_glue_input_dai_probe, \ 176 .remove = meson_codec_glue_input_dai_remove, \ 177 } 178 179 #define TOHDMITX_OUT(xname, xid, xfmt, xchmax) { \ 180 .name = xname, \ 181 .id = (xid), \ 182 .capture = TOHDMITX_STREAM(xname, "Capture", xfmt, xchmax), \ 183 .ops = &g12a_tohdmitx_output_ops, \ 184 } 185 186 static struct snd_soc_dai_driver g12a_tohdmitx_dai_drv[] = { 187 TOHDMITX_IN("I2S IN A", TOHDMITX_I2S_IN_A, 188 TOHDMITX_I2S_FORMATS, 8), 189 TOHDMITX_IN("I2S IN B", TOHDMITX_I2S_IN_B, 190 TOHDMITX_I2S_FORMATS, 8), 191 TOHDMITX_IN("I2S IN C", TOHDMITX_I2S_IN_C, 192 TOHDMITX_I2S_FORMATS, 8), 193 TOHDMITX_OUT("I2S OUT", TOHDMITX_I2S_OUT, 194 TOHDMITX_I2S_FORMATS, 8), 195 TOHDMITX_IN("SPDIF IN A", TOHDMITX_SPDIF_IN_A, 196 TOHDMITX_SPDIF_FORMATS, 2), 197 TOHDMITX_IN("SPDIF IN B", TOHDMITX_SPDIF_IN_B, 198 TOHDMITX_SPDIF_FORMATS, 2), 199 TOHDMITX_OUT("SPDIF OUT", TOHDMITX_SPDIF_OUT, 200 TOHDMITX_SPDIF_FORMATS, 2), 201 }; 202 203 static int g12a_tohdmi_component_probe(struct snd_soc_component *c) 204 { 205 /* Initialize the static clock parameters */ 206 return snd_soc_component_write(c, TOHDMITX_CTRL0, 207 CTRL0_I2S_BLK_CAP_INV | CTRL0_SPDIF_CLK_CAP_INV); 208 } 209 210 static const struct snd_soc_dapm_route g12a_tohdmitx_routes[] = { 211 { "I2S SRC", "I2S A", "I2S IN A Playback" }, 212 { "I2S SRC", "I2S B", "I2S IN B Playback" }, 213 { "I2S SRC", "I2S C", "I2S IN C Playback" }, 214 { "I2S OUT EN", "Switch", "I2S SRC" }, 215 { "I2S OUT Capture", NULL, "I2S OUT EN" }, 216 { "SPDIF SRC", "SPDIF A", "SPDIF IN A Playback" }, 217 { "SPDIF SRC", "SPDIF B", "SPDIF IN B Playback" }, 218 { "SPDIF OUT EN", "Switch", "SPDIF SRC" }, 219 { "SPDIF OUT Capture", NULL, "SPDIF OUT EN" }, 220 }; 221 222 static const struct snd_soc_component_driver g12a_tohdmitx_component_drv = { 223 .probe = g12a_tohdmi_component_probe, 224 .dapm_widgets = g12a_tohdmitx_widgets, 225 .num_dapm_widgets = ARRAY_SIZE(g12a_tohdmitx_widgets), 226 .dapm_routes = g12a_tohdmitx_routes, 227 .num_dapm_routes = ARRAY_SIZE(g12a_tohdmitx_routes), 228 .endianness = 1, 229 }; 230 231 static const struct regmap_config g12a_tohdmitx_regmap_cfg = { 232 .reg_bits = 32, 233 .val_bits = 32, 234 .reg_stride = 4, 235 }; 236 237 static const struct of_device_id g12a_tohdmitx_of_match[] = { 238 { .compatible = "amlogic,g12a-tohdmitx", }, 239 {} 240 }; 241 MODULE_DEVICE_TABLE(of, g12a_tohdmitx_of_match); 242 243 static int g12a_tohdmitx_probe(struct platform_device *pdev) 244 { 245 struct device *dev = &pdev->dev; 246 void __iomem *regs; 247 struct regmap *map; 248 int ret; 249 250 ret = device_reset(dev); 251 if (ret) 252 return ret; 253 254 regs = devm_platform_ioremap_resource(pdev, 0); 255 if (IS_ERR(regs)) 256 return PTR_ERR(regs); 257 258 map = devm_regmap_init_mmio(dev, regs, &g12a_tohdmitx_regmap_cfg); 259 if (IS_ERR(map)) { 260 dev_err(dev, "failed to init regmap: %ld\n", 261 PTR_ERR(map)); 262 return PTR_ERR(map); 263 } 264 265 return devm_snd_soc_register_component(dev, 266 &g12a_tohdmitx_component_drv, g12a_tohdmitx_dai_drv, 267 ARRAY_SIZE(g12a_tohdmitx_dai_drv)); 268 } 269 270 static struct platform_driver g12a_tohdmitx_pdrv = { 271 .driver = { 272 .name = G12A_TOHDMITX_DRV_NAME, 273 .of_match_table = g12a_tohdmitx_of_match, 274 }, 275 .probe = g12a_tohdmitx_probe, 276 }; 277 module_platform_driver(g12a_tohdmitx_pdrv); 278 279 MODULE_AUTHOR("Jerome Brunet <jbrunet@baylibre.com>"); 280 MODULE_DESCRIPTION("Amlogic G12a To HDMI Tx Control Codec Driver"); 281 MODULE_LICENSE("GPL v2"); 282