1 // SPDX-License-Identifier: (GPL-2.0 OR MIT) 2 // 3 // Copyright (c) 2018 BayLibre, SAS. 4 // Author: Jerome Brunet <jbrunet@baylibre.com> 5 6 /* This driver implements the frontend capture DAI of AXG based SoCs */ 7 8 #include <linux/bitfield.h> 9 #include <linux/clk.h> 10 #include <linux/regmap.h> 11 #include <linux/module.h> 12 #include <linux/of_platform.h> 13 #include <sound/pcm_params.h> 14 #include <sound/soc.h> 15 #include <sound/soc-dai.h> 16 17 #include "axg-fifo.h" 18 19 #define CTRL0_TODDR_SEL_RESAMPLE BIT(30) 20 #define CTRL0_TODDR_EXT_SIGNED BIT(29) 21 #define CTRL0_TODDR_PP_MODE BIT(28) 22 #define CTRL0_TODDR_SYNC_CH BIT(27) 23 #define CTRL0_TODDR_TYPE GENMASK(15, 13) 24 #define CTRL0_TODDR_MSB_POS GENMASK(12, 8) 25 #define CTRL0_TODDR_LSB_POS GENMASK(7, 3) 26 #define CTRL1_TODDR_FORCE_FINISH BIT(25) 27 #define CTRL1_SEL_SHIFT 28 28 29 #define TODDR_MSB_POS 31 30 31 static int axg_toddr_pcm_new(struct snd_soc_pcm_runtime *rtd, 32 struct snd_soc_dai *dai) 33 { 34 return axg_fifo_pcm_new(rtd, SNDRV_PCM_STREAM_CAPTURE); 35 } 36 37 static int g12a_toddr_dai_prepare(struct snd_pcm_substream *substream, 38 struct snd_soc_dai *dai) 39 { 40 struct axg_fifo *fifo = snd_soc_dai_get_drvdata(dai); 41 42 /* Reset the write pointer to the FIFO_INIT_ADDR */ 43 regmap_update_bits(fifo->map, FIFO_CTRL1, 44 CTRL1_TODDR_FORCE_FINISH, 0); 45 regmap_update_bits(fifo->map, FIFO_CTRL1, 46 CTRL1_TODDR_FORCE_FINISH, CTRL1_TODDR_FORCE_FINISH); 47 regmap_update_bits(fifo->map, FIFO_CTRL1, 48 CTRL1_TODDR_FORCE_FINISH, 0); 49 50 return 0; 51 } 52 53 static int axg_toddr_dai_hw_params(struct snd_pcm_substream *substream, 54 struct snd_pcm_hw_params *params, 55 struct snd_soc_dai *dai) 56 { 57 struct axg_fifo *fifo = snd_soc_dai_get_drvdata(dai); 58 unsigned int type, width; 59 60 switch (params_physical_width(params)) { 61 case 8: 62 type = 0; /* 8 samples of 8 bits */ 63 break; 64 case 16: 65 type = 2; /* 4 samples of 16 bits - right justified */ 66 break; 67 case 32: 68 type = 4; /* 2 samples of 32 bits - right justified */ 69 break; 70 default: 71 return -EINVAL; 72 } 73 74 width = params_width(params); 75 76 regmap_update_bits(fifo->map, FIFO_CTRL0, 77 CTRL0_TODDR_TYPE | 78 CTRL0_TODDR_MSB_POS | 79 CTRL0_TODDR_LSB_POS, 80 FIELD_PREP(CTRL0_TODDR_TYPE, type) | 81 FIELD_PREP(CTRL0_TODDR_MSB_POS, TODDR_MSB_POS) | 82 FIELD_PREP(CTRL0_TODDR_LSB_POS, TODDR_MSB_POS - (width - 1))); 83 84 return 0; 85 } 86 87 static int axg_toddr_dai_startup(struct snd_pcm_substream *substream, 88 struct snd_soc_dai *dai) 89 { 90 struct axg_fifo *fifo = snd_soc_dai_get_drvdata(dai); 91 int ret; 92 93 /* Enable pclk to access registers and clock the fifo ip */ 94 ret = clk_prepare_enable(fifo->pclk); 95 if (ret) 96 return ret; 97 98 /* Select orginal data - resampling not supported ATM */ 99 regmap_update_bits(fifo->map, FIFO_CTRL0, CTRL0_TODDR_SEL_RESAMPLE, 0); 100 101 /* Only signed format are supported ATM */ 102 regmap_update_bits(fifo->map, FIFO_CTRL0, CTRL0_TODDR_EXT_SIGNED, 103 CTRL0_TODDR_EXT_SIGNED); 104 105 /* Apply single buffer mode to the interface */ 106 regmap_update_bits(fifo->map, FIFO_CTRL0, CTRL0_TODDR_PP_MODE, 0); 107 108 return 0; 109 } 110 111 static void axg_toddr_dai_shutdown(struct snd_pcm_substream *substream, 112 struct snd_soc_dai *dai) 113 { 114 struct axg_fifo *fifo = snd_soc_dai_get_drvdata(dai); 115 116 clk_disable_unprepare(fifo->pclk); 117 } 118 119 static const struct snd_soc_dai_ops axg_toddr_ops = { 120 .hw_params = axg_toddr_dai_hw_params, 121 .startup = axg_toddr_dai_startup, 122 .shutdown = axg_toddr_dai_shutdown, 123 .pcm_new = axg_toddr_pcm_new, 124 }; 125 126 static struct snd_soc_dai_driver axg_toddr_dai_drv = { 127 .name = "TODDR", 128 .capture = { 129 .stream_name = "Capture", 130 .channels_min = 1, 131 .channels_max = AXG_FIFO_CH_MAX, 132 .rates = AXG_FIFO_RATES, 133 .formats = AXG_FIFO_FORMATS, 134 }, 135 .ops = &axg_toddr_ops, 136 }; 137 138 static const char * const axg_toddr_sel_texts[] = { 139 "IN 0", "IN 1", "IN 2", "IN 3", "IN 4", "IN 5", "IN 6", "IN 7" 140 }; 141 142 static SOC_ENUM_SINGLE_DECL(axg_toddr_sel_enum, FIFO_CTRL0, CTRL0_SEL_SHIFT, 143 axg_toddr_sel_texts); 144 145 static const struct snd_kcontrol_new axg_toddr_in_mux = 146 SOC_DAPM_ENUM("Input Source", axg_toddr_sel_enum); 147 148 static const struct snd_soc_dapm_widget axg_toddr_dapm_widgets[] = { 149 SND_SOC_DAPM_MUX("SRC SEL", SND_SOC_NOPM, 0, 0, &axg_toddr_in_mux), 150 SND_SOC_DAPM_AIF_IN("IN 0", NULL, 0, SND_SOC_NOPM, 0, 0), 151 SND_SOC_DAPM_AIF_IN("IN 1", NULL, 0, SND_SOC_NOPM, 0, 0), 152 SND_SOC_DAPM_AIF_IN("IN 2", NULL, 0, SND_SOC_NOPM, 0, 0), 153 SND_SOC_DAPM_AIF_IN("IN 3", NULL, 0, SND_SOC_NOPM, 0, 0), 154 SND_SOC_DAPM_AIF_IN("IN 4", NULL, 0, SND_SOC_NOPM, 0, 0), 155 SND_SOC_DAPM_AIF_IN("IN 5", NULL, 0, SND_SOC_NOPM, 0, 0), 156 SND_SOC_DAPM_AIF_IN("IN 6", NULL, 0, SND_SOC_NOPM, 0, 0), 157 SND_SOC_DAPM_AIF_IN("IN 7", NULL, 0, SND_SOC_NOPM, 0, 0), 158 }; 159 160 static const struct snd_soc_dapm_route axg_toddr_dapm_routes[] = { 161 { "Capture", NULL, "SRC SEL" }, 162 { "SRC SEL", "IN 0", "IN 0" }, 163 { "SRC SEL", "IN 1", "IN 1" }, 164 { "SRC SEL", "IN 2", "IN 2" }, 165 { "SRC SEL", "IN 3", "IN 3" }, 166 { "SRC SEL", "IN 4", "IN 4" }, 167 { "SRC SEL", "IN 5", "IN 5" }, 168 { "SRC SEL", "IN 6", "IN 6" }, 169 { "SRC SEL", "IN 7", "IN 7" }, 170 }; 171 172 static const struct snd_soc_component_driver axg_toddr_component_drv = { 173 .dapm_widgets = axg_toddr_dapm_widgets, 174 .num_dapm_widgets = ARRAY_SIZE(axg_toddr_dapm_widgets), 175 .dapm_routes = axg_toddr_dapm_routes, 176 .num_dapm_routes = ARRAY_SIZE(axg_toddr_dapm_routes), 177 .open = axg_fifo_pcm_open, 178 .close = axg_fifo_pcm_close, 179 .hw_params = axg_fifo_pcm_hw_params, 180 .hw_free = axg_fifo_pcm_hw_free, 181 .pointer = axg_fifo_pcm_pointer, 182 .trigger = axg_fifo_pcm_trigger, 183 .legacy_dai_naming = 1, 184 }; 185 186 static const struct axg_fifo_match_data axg_toddr_match_data = { 187 .field_threshold = REG_FIELD(FIFO_CTRL1, 16, 23), 188 .component_drv = &axg_toddr_component_drv, 189 .dai_drv = &axg_toddr_dai_drv 190 }; 191 192 static int g12a_toddr_dai_startup(struct snd_pcm_substream *substream, 193 struct snd_soc_dai *dai) 194 { 195 struct axg_fifo *fifo = snd_soc_dai_get_drvdata(dai); 196 int ret; 197 198 ret = axg_toddr_dai_startup(substream, dai); 199 if (ret) 200 return ret; 201 202 /* 203 * Make sure the first channel ends up in the at beginning of the output 204 * As weird as it looks, without this the first channel may be misplaced 205 * in memory, with a random shift of 2 channels. 206 */ 207 regmap_update_bits(fifo->map, FIFO_CTRL0, CTRL0_TODDR_SYNC_CH, 208 CTRL0_TODDR_SYNC_CH); 209 210 return 0; 211 } 212 213 static const struct snd_soc_dai_ops g12a_toddr_ops = { 214 .prepare = g12a_toddr_dai_prepare, 215 .hw_params = axg_toddr_dai_hw_params, 216 .startup = g12a_toddr_dai_startup, 217 .shutdown = axg_toddr_dai_shutdown, 218 .pcm_new = axg_toddr_pcm_new, 219 }; 220 221 static struct snd_soc_dai_driver g12a_toddr_dai_drv = { 222 .name = "TODDR", 223 .capture = { 224 .stream_name = "Capture", 225 .channels_min = 1, 226 .channels_max = AXG_FIFO_CH_MAX, 227 .rates = AXG_FIFO_RATES, 228 .formats = AXG_FIFO_FORMATS, 229 }, 230 .ops = &g12a_toddr_ops, 231 }; 232 233 static const struct snd_soc_component_driver g12a_toddr_component_drv = { 234 .dapm_widgets = axg_toddr_dapm_widgets, 235 .num_dapm_widgets = ARRAY_SIZE(axg_toddr_dapm_widgets), 236 .dapm_routes = axg_toddr_dapm_routes, 237 .num_dapm_routes = ARRAY_SIZE(axg_toddr_dapm_routes), 238 .open = axg_fifo_pcm_open, 239 .close = axg_fifo_pcm_close, 240 .hw_params = g12a_fifo_pcm_hw_params, 241 .hw_free = axg_fifo_pcm_hw_free, 242 .pointer = axg_fifo_pcm_pointer, 243 .trigger = axg_fifo_pcm_trigger, 244 .legacy_dai_naming = 1, 245 }; 246 247 static const struct axg_fifo_match_data g12a_toddr_match_data = { 248 .field_threshold = REG_FIELD(FIFO_CTRL1, 16, 23), 249 .component_drv = &g12a_toddr_component_drv, 250 .dai_drv = &g12a_toddr_dai_drv 251 }; 252 253 static const char * const sm1_toddr_sel_texts[] = { 254 "IN 0", "IN 1", "IN 2", "IN 3", "IN 4", "IN 5", "IN 6", "IN 7", 255 "IN 8", "IN 9", "IN 10", "IN 11", "IN 12", "IN 13", "IN 14", "IN 15" 256 }; 257 258 static SOC_ENUM_SINGLE_DECL(sm1_toddr_sel_enum, FIFO_CTRL1, CTRL1_SEL_SHIFT, 259 sm1_toddr_sel_texts); 260 261 static const struct snd_kcontrol_new sm1_toddr_in_mux = 262 SOC_DAPM_ENUM("Input Source", sm1_toddr_sel_enum); 263 264 static const struct snd_soc_dapm_widget sm1_toddr_dapm_widgets[] = { 265 SND_SOC_DAPM_MUX("SRC SEL", SND_SOC_NOPM, 0, 0, &sm1_toddr_in_mux), 266 SND_SOC_DAPM_AIF_IN("IN 0", NULL, 0, SND_SOC_NOPM, 0, 0), 267 SND_SOC_DAPM_AIF_IN("IN 1", NULL, 0, SND_SOC_NOPM, 0, 0), 268 SND_SOC_DAPM_AIF_IN("IN 2", NULL, 0, SND_SOC_NOPM, 0, 0), 269 SND_SOC_DAPM_AIF_IN("IN 3", NULL, 0, SND_SOC_NOPM, 0, 0), 270 SND_SOC_DAPM_AIF_IN("IN 4", NULL, 0, SND_SOC_NOPM, 0, 0), 271 SND_SOC_DAPM_AIF_IN("IN 5", NULL, 0, SND_SOC_NOPM, 0, 0), 272 SND_SOC_DAPM_AIF_IN("IN 6", NULL, 0, SND_SOC_NOPM, 0, 0), 273 SND_SOC_DAPM_AIF_IN("IN 7", NULL, 0, SND_SOC_NOPM, 0, 0), 274 SND_SOC_DAPM_AIF_IN("IN 8", NULL, 0, SND_SOC_NOPM, 0, 0), 275 SND_SOC_DAPM_AIF_IN("IN 9", NULL, 0, SND_SOC_NOPM, 0, 0), 276 SND_SOC_DAPM_AIF_IN("IN 10", NULL, 0, SND_SOC_NOPM, 0, 0), 277 SND_SOC_DAPM_AIF_IN("IN 11", NULL, 0, SND_SOC_NOPM, 0, 0), 278 SND_SOC_DAPM_AIF_IN("IN 12", NULL, 0, SND_SOC_NOPM, 0, 0), 279 SND_SOC_DAPM_AIF_IN("IN 13", NULL, 0, SND_SOC_NOPM, 0, 0), 280 SND_SOC_DAPM_AIF_IN("IN 14", NULL, 0, SND_SOC_NOPM, 0, 0), 281 SND_SOC_DAPM_AIF_IN("IN 15", NULL, 0, SND_SOC_NOPM, 0, 0), 282 }; 283 284 static const struct snd_soc_dapm_route sm1_toddr_dapm_routes[] = { 285 { "Capture", NULL, "SRC SEL" }, 286 { "SRC SEL", "IN 0", "IN 0" }, 287 { "SRC SEL", "IN 1", "IN 1" }, 288 { "SRC SEL", "IN 2", "IN 2" }, 289 { "SRC SEL", "IN 3", "IN 3" }, 290 { "SRC SEL", "IN 4", "IN 4" }, 291 { "SRC SEL", "IN 5", "IN 5" }, 292 { "SRC SEL", "IN 6", "IN 6" }, 293 { "SRC SEL", "IN 7", "IN 7" }, 294 { "SRC SEL", "IN 8", "IN 8" }, 295 { "SRC SEL", "IN 9", "IN 9" }, 296 { "SRC SEL", "IN 10", "IN 10" }, 297 { "SRC SEL", "IN 11", "IN 11" }, 298 { "SRC SEL", "IN 12", "IN 12" }, 299 { "SRC SEL", "IN 13", "IN 13" }, 300 { "SRC SEL", "IN 14", "IN 14" }, 301 { "SRC SEL", "IN 15", "IN 15" }, 302 }; 303 304 static const struct snd_soc_component_driver sm1_toddr_component_drv = { 305 .dapm_widgets = sm1_toddr_dapm_widgets, 306 .num_dapm_widgets = ARRAY_SIZE(sm1_toddr_dapm_widgets), 307 .dapm_routes = sm1_toddr_dapm_routes, 308 .num_dapm_routes = ARRAY_SIZE(sm1_toddr_dapm_routes), 309 .open = axg_fifo_pcm_open, 310 .close = axg_fifo_pcm_close, 311 .hw_params = g12a_fifo_pcm_hw_params, 312 .hw_free = axg_fifo_pcm_hw_free, 313 .pointer = axg_fifo_pcm_pointer, 314 .trigger = axg_fifo_pcm_trigger, 315 .legacy_dai_naming = 1, 316 }; 317 318 static const struct axg_fifo_match_data sm1_toddr_match_data = { 319 .field_threshold = REG_FIELD(FIFO_CTRL1, 12, 23), 320 .component_drv = &sm1_toddr_component_drv, 321 .dai_drv = &g12a_toddr_dai_drv 322 }; 323 324 static const struct of_device_id axg_toddr_of_match[] = { 325 { 326 .compatible = "amlogic,axg-toddr", 327 .data = &axg_toddr_match_data, 328 }, { 329 .compatible = "amlogic,g12a-toddr", 330 .data = &g12a_toddr_match_data, 331 }, { 332 .compatible = "amlogic,sm1-toddr", 333 .data = &sm1_toddr_match_data, 334 }, {} 335 }; 336 MODULE_DEVICE_TABLE(of, axg_toddr_of_match); 337 338 static struct platform_driver axg_toddr_pdrv = { 339 .probe = axg_fifo_probe, 340 .driver = { 341 .name = "axg-toddr", 342 .of_match_table = axg_toddr_of_match, 343 }, 344 }; 345 module_platform_driver(axg_toddr_pdrv); 346 347 MODULE_DESCRIPTION("Amlogic AXG capture fifo driver"); 348 MODULE_AUTHOR("Jerome Brunet <jbrunet@baylibre.com>"); 349 MODULE_LICENSE("GPL v2"); 350