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