1 /* 2 * spitz.c -- SoC audio for Sharp SL-Cxx00 models Spitz, Borzoi and Akita 3 * 4 * Copyright 2005 Wolfson Microelectronics PLC. 5 * Copyright 2005 Openedhand Ltd. 6 * 7 * Authors: Liam Girdwood <lrg@slimlogic.co.uk> 8 * Richard Purdie <richard@openedhand.com> 9 * 10 * This program is free software; you can redistribute it and/or modify it 11 * under the terms of the GNU General Public License as published by the 12 * Free Software Foundation; either version 2 of the License, or (at your 13 * option) any later version. 14 * 15 */ 16 17 #include <linux/module.h> 18 #include <linux/moduleparam.h> 19 #include <linux/timer.h> 20 #include <linux/interrupt.h> 21 #include <linux/platform_device.h> 22 #include <linux/gpio.h> 23 #include <sound/core.h> 24 #include <sound/pcm.h> 25 #include <sound/soc.h> 26 27 #include <asm/mach-types.h> 28 #include <mach/spitz.h> 29 #include "../codecs/wm8750.h" 30 #include "pxa2xx-i2s.h" 31 32 #define SPITZ_HP 0 33 #define SPITZ_MIC 1 34 #define SPITZ_LINE 2 35 #define SPITZ_HEADSET 3 36 #define SPITZ_HP_OFF 4 37 #define SPITZ_SPK_ON 0 38 #define SPITZ_SPK_OFF 1 39 40 /* audio clock in Hz - rounded from 12.235MHz */ 41 #define SPITZ_AUDIO_CLOCK 12288000 42 43 static int spitz_jack_func; 44 static int spitz_spk_func; 45 static int spitz_mic_gpio; 46 47 static void spitz_ext_control(struct snd_soc_codec *codec) 48 { 49 struct snd_soc_dapm_context *dapm = &codec->dapm; 50 51 if (spitz_spk_func == SPITZ_SPK_ON) 52 snd_soc_dapm_enable_pin(dapm, "Ext Spk"); 53 else 54 snd_soc_dapm_disable_pin(dapm, "Ext Spk"); 55 56 /* set up jack connection */ 57 switch (spitz_jack_func) { 58 case SPITZ_HP: 59 /* enable and unmute hp jack, disable mic bias */ 60 snd_soc_dapm_disable_pin(dapm, "Headset Jack"); 61 snd_soc_dapm_disable_pin(dapm, "Mic Jack"); 62 snd_soc_dapm_disable_pin(dapm, "Line Jack"); 63 snd_soc_dapm_enable_pin(dapm, "Headphone Jack"); 64 gpio_set_value(SPITZ_GPIO_MUTE_L, 1); 65 gpio_set_value(SPITZ_GPIO_MUTE_R, 1); 66 break; 67 case SPITZ_MIC: 68 /* enable mic jack and bias, mute hp */ 69 snd_soc_dapm_disable_pin(dapm, "Headphone Jack"); 70 snd_soc_dapm_disable_pin(dapm, "Headset Jack"); 71 snd_soc_dapm_disable_pin(dapm, "Line Jack"); 72 snd_soc_dapm_enable_pin(dapm, "Mic Jack"); 73 gpio_set_value(SPITZ_GPIO_MUTE_L, 0); 74 gpio_set_value(SPITZ_GPIO_MUTE_R, 0); 75 break; 76 case SPITZ_LINE: 77 /* enable line jack, disable mic bias and mute hp */ 78 snd_soc_dapm_disable_pin(dapm, "Headphone Jack"); 79 snd_soc_dapm_disable_pin(dapm, "Headset Jack"); 80 snd_soc_dapm_disable_pin(dapm, "Mic Jack"); 81 snd_soc_dapm_enable_pin(dapm, "Line Jack"); 82 gpio_set_value(SPITZ_GPIO_MUTE_L, 0); 83 gpio_set_value(SPITZ_GPIO_MUTE_R, 0); 84 break; 85 case SPITZ_HEADSET: 86 /* enable and unmute headset jack enable mic bias, mute L hp */ 87 snd_soc_dapm_disable_pin(dapm, "Headphone Jack"); 88 snd_soc_dapm_enable_pin(dapm, "Mic Jack"); 89 snd_soc_dapm_disable_pin(dapm, "Line Jack"); 90 snd_soc_dapm_enable_pin(dapm, "Headset Jack"); 91 gpio_set_value(SPITZ_GPIO_MUTE_L, 0); 92 gpio_set_value(SPITZ_GPIO_MUTE_R, 1); 93 break; 94 case SPITZ_HP_OFF: 95 96 /* jack removed, everything off */ 97 snd_soc_dapm_disable_pin(dapm, "Headphone Jack"); 98 snd_soc_dapm_disable_pin(dapm, "Headset Jack"); 99 snd_soc_dapm_disable_pin(dapm, "Mic Jack"); 100 snd_soc_dapm_disable_pin(dapm, "Line Jack"); 101 gpio_set_value(SPITZ_GPIO_MUTE_L, 0); 102 gpio_set_value(SPITZ_GPIO_MUTE_R, 0); 103 break; 104 } 105 snd_soc_dapm_sync(dapm); 106 } 107 108 static int spitz_startup(struct snd_pcm_substream *substream) 109 { 110 struct snd_soc_pcm_runtime *rtd = substream->private_data; 111 struct snd_soc_codec *codec = rtd->codec; 112 113 mutex_lock(&codec->mutex); 114 115 /* check the jack status at stream startup */ 116 spitz_ext_control(codec); 117 118 mutex_unlock(&codec->mutex); 119 120 return 0; 121 } 122 123 static int spitz_hw_params(struct snd_pcm_substream *substream, 124 struct snd_pcm_hw_params *params) 125 { 126 struct snd_soc_pcm_runtime *rtd = substream->private_data; 127 struct snd_soc_dai *codec_dai = rtd->codec_dai; 128 struct snd_soc_dai *cpu_dai = rtd->cpu_dai; 129 unsigned int clk = 0; 130 int ret = 0; 131 132 switch (params_rate(params)) { 133 case 8000: 134 case 16000: 135 case 48000: 136 case 96000: 137 clk = 12288000; 138 break; 139 case 11025: 140 case 22050: 141 case 44100: 142 clk = 11289600; 143 break; 144 } 145 146 /* set the codec system clock for DAC and ADC */ 147 ret = snd_soc_dai_set_sysclk(codec_dai, WM8750_SYSCLK, clk, 148 SND_SOC_CLOCK_IN); 149 if (ret < 0) 150 return ret; 151 152 /* set the I2S system clock as input (unused) */ 153 ret = snd_soc_dai_set_sysclk(cpu_dai, PXA2XX_I2S_SYSCLK, 0, 154 SND_SOC_CLOCK_IN); 155 if (ret < 0) 156 return ret; 157 158 return 0; 159 } 160 161 static struct snd_soc_ops spitz_ops = { 162 .startup = spitz_startup, 163 .hw_params = spitz_hw_params, 164 }; 165 166 static int spitz_get_jack(struct snd_kcontrol *kcontrol, 167 struct snd_ctl_elem_value *ucontrol) 168 { 169 ucontrol->value.integer.value[0] = spitz_jack_func; 170 return 0; 171 } 172 173 static int spitz_set_jack(struct snd_kcontrol *kcontrol, 174 struct snd_ctl_elem_value *ucontrol) 175 { 176 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); 177 178 if (spitz_jack_func == ucontrol->value.integer.value[0]) 179 return 0; 180 181 spitz_jack_func = ucontrol->value.integer.value[0]; 182 spitz_ext_control(codec); 183 return 1; 184 } 185 186 static int spitz_get_spk(struct snd_kcontrol *kcontrol, 187 struct snd_ctl_elem_value *ucontrol) 188 { 189 ucontrol->value.integer.value[0] = spitz_spk_func; 190 return 0; 191 } 192 193 static int spitz_set_spk(struct snd_kcontrol *kcontrol, 194 struct snd_ctl_elem_value *ucontrol) 195 { 196 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); 197 198 if (spitz_spk_func == ucontrol->value.integer.value[0]) 199 return 0; 200 201 spitz_spk_func = ucontrol->value.integer.value[0]; 202 spitz_ext_control(codec); 203 return 1; 204 } 205 206 static int spitz_mic_bias(struct snd_soc_dapm_widget *w, 207 struct snd_kcontrol *k, int event) 208 { 209 gpio_set_value_cansleep(spitz_mic_gpio, SND_SOC_DAPM_EVENT_ON(event)); 210 return 0; 211 } 212 213 /* spitz machine dapm widgets */ 214 static const struct snd_soc_dapm_widget wm8750_dapm_widgets[] = { 215 SND_SOC_DAPM_HP("Headphone Jack", NULL), 216 SND_SOC_DAPM_MIC("Mic Jack", spitz_mic_bias), 217 SND_SOC_DAPM_SPK("Ext Spk", NULL), 218 SND_SOC_DAPM_LINE("Line Jack", NULL), 219 220 /* headset is a mic and mono headphone */ 221 SND_SOC_DAPM_HP("Headset Jack", NULL), 222 }; 223 224 /* Spitz machine audio_map */ 225 static const struct snd_soc_dapm_route spitz_audio_map[] = { 226 227 /* headphone connected to LOUT1, ROUT1 */ 228 {"Headphone Jack", NULL, "LOUT1"}, 229 {"Headphone Jack", NULL, "ROUT1"}, 230 231 /* headset connected to ROUT1 and LINPUT1 with bias (def below) */ 232 {"Headset Jack", NULL, "ROUT1"}, 233 234 /* ext speaker connected to LOUT2, ROUT2 */ 235 {"Ext Spk", NULL , "ROUT2"}, 236 {"Ext Spk", NULL , "LOUT2"}, 237 238 /* mic is connected to input 1 - with bias */ 239 {"LINPUT1", NULL, "Mic Bias"}, 240 {"Mic Bias", NULL, "Mic Jack"}, 241 242 /* line is connected to input 1 - no bias */ 243 {"LINPUT1", NULL, "Line Jack"}, 244 }; 245 246 static const char *jack_function[] = {"Headphone", "Mic", "Line", "Headset", 247 "Off"}; 248 static const char *spk_function[] = {"On", "Off"}; 249 static const struct soc_enum spitz_enum[] = { 250 SOC_ENUM_SINGLE_EXT(5, jack_function), 251 SOC_ENUM_SINGLE_EXT(2, spk_function), 252 }; 253 254 static const struct snd_kcontrol_new wm8750_spitz_controls[] = { 255 SOC_ENUM_EXT("Jack Function", spitz_enum[0], spitz_get_jack, 256 spitz_set_jack), 257 SOC_ENUM_EXT("Speaker Function", spitz_enum[1], spitz_get_spk, 258 spitz_set_spk), 259 }; 260 261 /* 262 * Logic for a wm8750 as connected on a Sharp SL-Cxx00 Device 263 */ 264 static int spitz_wm8750_init(struct snd_soc_pcm_runtime *rtd) 265 { 266 struct snd_soc_codec *codec = rtd->codec; 267 struct snd_soc_dapm_context *dapm = &codec->dapm; 268 269 /* NC codec pins */ 270 snd_soc_dapm_nc_pin(dapm, "RINPUT1"); 271 snd_soc_dapm_nc_pin(dapm, "LINPUT2"); 272 snd_soc_dapm_nc_pin(dapm, "RINPUT2"); 273 snd_soc_dapm_nc_pin(dapm, "LINPUT3"); 274 snd_soc_dapm_nc_pin(dapm, "RINPUT3"); 275 snd_soc_dapm_nc_pin(dapm, "OUT3"); 276 snd_soc_dapm_nc_pin(dapm, "MONO1"); 277 278 return 0; 279 } 280 281 /* spitz digital audio interface glue - connects codec <--> CPU */ 282 static struct snd_soc_dai_link spitz_dai = { 283 .name = "wm8750", 284 .stream_name = "WM8750", 285 .cpu_dai_name = "pxa2xx-i2s", 286 .codec_dai_name = "wm8750-hifi", 287 .platform_name = "pxa-pcm-audio", 288 .codec_name = "wm8750.0-001b", 289 .init = spitz_wm8750_init, 290 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | 291 SND_SOC_DAIFMT_CBS_CFS, 292 .ops = &spitz_ops, 293 }; 294 295 /* spitz audio machine driver */ 296 static struct snd_soc_card snd_soc_spitz = { 297 .name = "Spitz", 298 .owner = THIS_MODULE, 299 .dai_link = &spitz_dai, 300 .num_links = 1, 301 302 .controls = wm8750_spitz_controls, 303 .num_controls = ARRAY_SIZE(wm8750_spitz_controls), 304 .dapm_widgets = wm8750_dapm_widgets, 305 .num_dapm_widgets = ARRAY_SIZE(wm8750_dapm_widgets), 306 .dapm_routes = spitz_audio_map, 307 .num_dapm_routes = ARRAY_SIZE(spitz_audio_map), 308 }; 309 310 static struct platform_device *spitz_snd_device; 311 312 static int __init spitz_init(void) 313 { 314 int ret; 315 316 if (!(machine_is_spitz() || machine_is_borzoi() || machine_is_akita())) 317 return -ENODEV; 318 319 if (machine_is_borzoi() || machine_is_spitz()) 320 spitz_mic_gpio = SPITZ_GPIO_MIC_BIAS; 321 else 322 spitz_mic_gpio = AKITA_GPIO_MIC_BIAS; 323 324 ret = gpio_request(spitz_mic_gpio, "MIC GPIO"); 325 if (ret) 326 goto err1; 327 328 ret = gpio_direction_output(spitz_mic_gpio, 0); 329 if (ret) 330 goto err2; 331 332 spitz_snd_device = platform_device_alloc("soc-audio", -1); 333 if (!spitz_snd_device) { 334 ret = -ENOMEM; 335 goto err2; 336 } 337 338 platform_set_drvdata(spitz_snd_device, &snd_soc_spitz); 339 340 ret = platform_device_add(spitz_snd_device); 341 if (ret) 342 goto err3; 343 344 return 0; 345 346 err3: 347 platform_device_put(spitz_snd_device); 348 err2: 349 gpio_free(spitz_mic_gpio); 350 err1: 351 return ret; 352 } 353 354 static void __exit spitz_exit(void) 355 { 356 platform_device_unregister(spitz_snd_device); 357 gpio_free(spitz_mic_gpio); 358 } 359 360 module_init(spitz_init); 361 module_exit(spitz_exit); 362 363 MODULE_AUTHOR("Richard Purdie"); 364 MODULE_DESCRIPTION("ALSA SoC Spitz"); 365 MODULE_LICENSE("GPL"); 366