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 = snd_soc_dapm_kcontrol_to_component(kcontrol); 42 struct snd_soc_dapm_context *dapm = snd_soc_dapm_kcontrol_to_dapm(kcontrol); 43 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; 44 unsigned int mux, changed; 45 46 if (ucontrol->value.enumerated.item[0] >= e->items) 47 return -EINVAL; 48 49 mux = snd_soc_enum_item_to_val(e, ucontrol->value.enumerated.item[0]); 50 changed = snd_soc_component_test_bits(component, e->reg, 51 CTRL0_I2S_DAT_SEL, 52 FIELD_PREP(CTRL0_I2S_DAT_SEL, 53 mux)); 54 55 if (!changed) 56 return 0; 57 58 /* Force disconnect of the mux while updating */ 59 snd_soc_dapm_mux_update_power(dapm, kcontrol, 0, NULL, NULL); 60 61 snd_soc_component_update_bits(component, e->reg, 62 CTRL0_I2S_DAT_SEL | 63 CTRL0_I2S_LRCLK_SEL | 64 CTRL0_I2S_BCLK_SEL, 65 FIELD_PREP(CTRL0_I2S_DAT_SEL, mux) | 66 FIELD_PREP(CTRL0_I2S_LRCLK_SEL, mux) | 67 FIELD_PREP(CTRL0_I2S_BCLK_SEL, mux)); 68 69 snd_soc_dapm_mux_update_power(dapm, kcontrol, mux, e, NULL); 70 71 return 1; 72 } 73 74 static SOC_ENUM_SINGLE_DECL(g12a_tohdmitx_i2s_mux_enum, TOHDMITX_CTRL0, 75 CTRL0_I2S_DAT_SEL_SHIFT, 76 g12a_tohdmitx_i2s_mux_texts); 77 78 static const struct snd_kcontrol_new g12a_tohdmitx_i2s_mux = 79 SOC_DAPM_ENUM_EXT("I2S Source", g12a_tohdmitx_i2s_mux_enum, 80 snd_soc_dapm_get_enum_double, 81 g12a_tohdmitx_i2s_mux_put_enum); 82 83 static const char * const g12a_tohdmitx_spdif_mux_texts[] = { 84 "SPDIF A", "SPDIF B", 85 }; 86 87 static int g12a_tohdmitx_spdif_mux_put_enum(struct snd_kcontrol *kcontrol, 88 struct snd_ctl_elem_value *ucontrol) 89 { 90 struct snd_soc_component *component = snd_soc_dapm_kcontrol_to_component(kcontrol); 91 struct snd_soc_dapm_context *dapm = snd_soc_dapm_kcontrol_to_dapm(kcontrol); 92 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; 93 unsigned int mux, changed; 94 95 if (ucontrol->value.enumerated.item[0] >= e->items) 96 return -EINVAL; 97 98 mux = snd_soc_enum_item_to_val(e, ucontrol->value.enumerated.item[0]); 99 changed = snd_soc_component_test_bits(component, TOHDMITX_CTRL0, 100 CTRL0_SPDIF_SEL, 101 FIELD_PREP(CTRL0_SPDIF_SEL, mux)); 102 103 if (!changed) 104 return 0; 105 106 /* Force disconnect of the mux while updating */ 107 snd_soc_dapm_mux_update_power(dapm, kcontrol, 0, NULL, NULL); 108 109 snd_soc_component_update_bits(component, TOHDMITX_CTRL0, 110 CTRL0_SPDIF_SEL | 111 CTRL0_SPDIF_CLK_SEL, 112 FIELD_PREP(CTRL0_SPDIF_SEL, mux) | 113 FIELD_PREP(CTRL0_SPDIF_CLK_SEL, mux)); 114 115 snd_soc_dapm_mux_update_power(dapm, kcontrol, mux, e, NULL); 116 117 return 1; 118 } 119 120 static SOC_ENUM_SINGLE_DECL(g12a_tohdmitx_spdif_mux_enum, TOHDMITX_CTRL0, 121 CTRL0_SPDIF_SEL_SHIFT, 122 g12a_tohdmitx_spdif_mux_texts); 123 124 static const struct snd_kcontrol_new g12a_tohdmitx_spdif_mux = 125 SOC_DAPM_ENUM_EXT("SPDIF Source", g12a_tohdmitx_spdif_mux_enum, 126 snd_soc_dapm_get_enum_double, 127 g12a_tohdmitx_spdif_mux_put_enum); 128 129 static const struct snd_kcontrol_new g12a_tohdmitx_out_enable = 130 SOC_DAPM_SINGLE_AUTODISABLE("Switch", TOHDMITX_CTRL0, 131 CTRL0_ENABLE_SHIFT, 1, 0); 132 133 static const struct snd_soc_dapm_widget g12a_tohdmitx_widgets[] = { 134 SND_SOC_DAPM_MUX("I2S SRC", SND_SOC_NOPM, 0, 0, 135 &g12a_tohdmitx_i2s_mux), 136 SND_SOC_DAPM_SWITCH("I2S OUT EN", SND_SOC_NOPM, 0, 0, 137 &g12a_tohdmitx_out_enable), 138 SND_SOC_DAPM_MUX("SPDIF SRC", SND_SOC_NOPM, 0, 0, 139 &g12a_tohdmitx_spdif_mux), 140 SND_SOC_DAPM_SWITCH("SPDIF OUT EN", SND_SOC_NOPM, 0, 0, 141 &g12a_tohdmitx_out_enable), 142 }; 143 144 static const struct snd_soc_dai_ops g12a_tohdmitx_input_ops = { 145 .probe = meson_codec_glue_input_dai_probe, 146 .remove = meson_codec_glue_input_dai_remove, 147 .hw_params = meson_codec_glue_input_hw_params, 148 .set_fmt = meson_codec_glue_input_set_fmt, 149 }; 150 151 static const struct snd_soc_dai_ops g12a_tohdmitx_output_ops = { 152 .startup = meson_codec_glue_output_startup, 153 }; 154 155 #define TOHDMITX_SPDIF_FORMATS \ 156 (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE | \ 157 SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S24_LE) 158 159 #define TOHDMITX_I2S_FORMATS \ 160 (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE | \ 161 SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S24_LE | \ 162 SNDRV_PCM_FMTBIT_S32_LE) 163 164 #define TOHDMITX_STREAM(xname, xsuffix, xfmt, xchmax) \ 165 { \ 166 .stream_name = xname " " xsuffix, \ 167 .channels_min = 1, \ 168 .channels_max = (xchmax), \ 169 .rate_min = 8000, \ 170 .rate_max = 192000, \ 171 .formats = (xfmt), \ 172 } 173 174 #define TOHDMITX_IN(xname, xid, xfmt, xchmax) { \ 175 .name = xname, \ 176 .id = (xid), \ 177 .playback = TOHDMITX_STREAM(xname, "Playback", xfmt, xchmax), \ 178 .ops = &g12a_tohdmitx_input_ops, \ 179 } 180 181 #define TOHDMITX_OUT(xname, xid, xfmt, xchmax) { \ 182 .name = xname, \ 183 .id = (xid), \ 184 .capture = TOHDMITX_STREAM(xname, "Capture", xfmt, xchmax), \ 185 .ops = &g12a_tohdmitx_output_ops, \ 186 } 187 188 static struct snd_soc_dai_driver g12a_tohdmitx_dai_drv[] = { 189 TOHDMITX_IN("I2S IN A", TOHDMITX_I2S_IN_A, 190 TOHDMITX_I2S_FORMATS, 8), 191 TOHDMITX_IN("I2S IN B", TOHDMITX_I2S_IN_B, 192 TOHDMITX_I2S_FORMATS, 8), 193 TOHDMITX_IN("I2S IN C", TOHDMITX_I2S_IN_C, 194 TOHDMITX_I2S_FORMATS, 8), 195 TOHDMITX_OUT("I2S OUT", TOHDMITX_I2S_OUT, 196 TOHDMITX_I2S_FORMATS, 8), 197 TOHDMITX_IN("SPDIF IN A", TOHDMITX_SPDIF_IN_A, 198 TOHDMITX_SPDIF_FORMATS, 2), 199 TOHDMITX_IN("SPDIF IN B", TOHDMITX_SPDIF_IN_B, 200 TOHDMITX_SPDIF_FORMATS, 2), 201 TOHDMITX_OUT("SPDIF OUT", TOHDMITX_SPDIF_OUT, 202 TOHDMITX_SPDIF_FORMATS, 2), 203 }; 204 205 static int g12a_tohdmi_component_probe(struct snd_soc_component *c) 206 { 207 /* Initialize the static clock parameters */ 208 return snd_soc_component_write(c, TOHDMITX_CTRL0, 209 CTRL0_I2S_BLK_CAP_INV | CTRL0_SPDIF_CLK_CAP_INV); 210 } 211 212 static const struct snd_soc_dapm_route g12a_tohdmitx_routes[] = { 213 { "I2S SRC", "I2S A", "I2S IN A Playback" }, 214 { "I2S SRC", "I2S B", "I2S IN B Playback" }, 215 { "I2S SRC", "I2S C", "I2S IN C Playback" }, 216 { "I2S OUT EN", "Switch", "I2S SRC" }, 217 { "I2S OUT Capture", NULL, "I2S OUT EN" }, 218 { "SPDIF SRC", "SPDIF A", "SPDIF IN A Playback" }, 219 { "SPDIF SRC", "SPDIF B", "SPDIF IN B Playback" }, 220 { "SPDIF OUT EN", "Switch", "SPDIF SRC" }, 221 { "SPDIF OUT Capture", NULL, "SPDIF OUT EN" }, 222 }; 223 224 static const struct snd_soc_component_driver g12a_tohdmitx_component_drv = { 225 .probe = g12a_tohdmi_component_probe, 226 .dapm_widgets = g12a_tohdmitx_widgets, 227 .num_dapm_widgets = ARRAY_SIZE(g12a_tohdmitx_widgets), 228 .dapm_routes = g12a_tohdmitx_routes, 229 .num_dapm_routes = ARRAY_SIZE(g12a_tohdmitx_routes), 230 .endianness = 1, 231 }; 232 233 static const struct regmap_config g12a_tohdmitx_regmap_cfg = { 234 .reg_bits = 32, 235 .val_bits = 32, 236 .reg_stride = 4, 237 }; 238 239 static const struct of_device_id g12a_tohdmitx_of_match[] = { 240 { .compatible = "amlogic,g12a-tohdmitx", }, 241 {} 242 }; 243 MODULE_DEVICE_TABLE(of, g12a_tohdmitx_of_match); 244 245 static int g12a_tohdmitx_probe(struct platform_device *pdev) 246 { 247 struct device *dev = &pdev->dev; 248 void __iomem *regs; 249 struct regmap *map; 250 int ret; 251 252 ret = device_reset(dev); 253 if (ret) 254 return ret; 255 256 regs = devm_platform_ioremap_resource(pdev, 0); 257 if (IS_ERR(regs)) 258 return PTR_ERR(regs); 259 260 map = devm_regmap_init_mmio(dev, regs, &g12a_tohdmitx_regmap_cfg); 261 if (IS_ERR(map)) { 262 dev_err(dev, "failed to init regmap: %ld\n", 263 PTR_ERR(map)); 264 return PTR_ERR(map); 265 } 266 267 return devm_snd_soc_register_component(dev, 268 &g12a_tohdmitx_component_drv, g12a_tohdmitx_dai_drv, 269 ARRAY_SIZE(g12a_tohdmitx_dai_drv)); 270 } 271 272 static struct platform_driver g12a_tohdmitx_pdrv = { 273 .driver = { 274 .name = G12A_TOHDMITX_DRV_NAME, 275 .of_match_table = g12a_tohdmitx_of_match, 276 }, 277 .probe = g12a_tohdmitx_probe, 278 }; 279 module_platform_driver(g12a_tohdmitx_pdrv); 280 281 MODULE_AUTHOR("Jerome Brunet <jbrunet@baylibre.com>"); 282 MODULE_DESCRIPTION("Amlogic G12a To HDMI Tx Control Codec Driver"); 283 MODULE_LICENSE("GPL v2"); 284