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 43static int spitz_jack_func; 44static int spitz_spk_func; 45static int spitz_mic_gpio; 46 47static void spitz_ext_control(struct snd_soc_dapm_context *dapm) 48{ 49 snd_soc_dapm_mutex_lock(dapm); 50 51 if (spitz_spk_func == SPITZ_SPK_ON) 52 snd_soc_dapm_enable_pin_unlocked(dapm, "Ext Spk"); 53 else 54 snd_soc_dapm_disable_pin_unlocked(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_unlocked(dapm, "Headset Jack"); 61 snd_soc_dapm_disable_pin_unlocked(dapm, "Mic Jack"); 62 snd_soc_dapm_disable_pin_unlocked(dapm, "Line Jack"); 63 snd_soc_dapm_enable_pin_unlocked(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_unlocked(dapm, "Headphone Jack"); 70 snd_soc_dapm_disable_pin_unlocked(dapm, "Headset Jack"); 71 snd_soc_dapm_disable_pin_unlocked(dapm, "Line Jack"); 72 snd_soc_dapm_enable_pin_unlocked(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_unlocked(dapm, "Headphone Jack"); 79 snd_soc_dapm_disable_pin_unlocked(dapm, "Headset Jack"); 80 snd_soc_dapm_disable_pin_unlocked(dapm, "Mic Jack"); 81 snd_soc_dapm_enable_pin_unlocked(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_unlocked(dapm, "Headphone Jack"); 88 snd_soc_dapm_enable_pin_unlocked(dapm, "Mic Jack"); 89 snd_soc_dapm_disable_pin_unlocked(dapm, "Line Jack"); 90 snd_soc_dapm_enable_pin_unlocked(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_unlocked(dapm, "Headphone Jack"); 98 snd_soc_dapm_disable_pin_unlocked(dapm, "Headset Jack"); 99 snd_soc_dapm_disable_pin_unlocked(dapm, "Mic Jack"); 100 snd_soc_dapm_disable_pin_unlocked(dapm, "Line Jack"); 101 gpio_set_value(SPITZ_GPIO_MUTE_L, 0); 102 gpio_set_value(SPITZ_GPIO_MUTE_R, 0); 103 break; 104 } 105 106 snd_soc_dapm_sync_unlocked(dapm); 107 108 snd_soc_dapm_mutex_unlock(dapm); 109} 110 111static int spitz_startup(struct snd_pcm_substream *substream) 112{ 113 struct snd_soc_pcm_runtime *rtd = substream->private_data; 114 115 /* check the jack status at stream startup */ 116 spitz_ext_control(&rtd->card->dapm); 117 118 return 0; 119} 120 121static 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 159static struct snd_soc_ops spitz_ops = { 160 .startup = spitz_startup, 161 .hw_params = spitz_hw_params, 162}; 163 164static 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 171static 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 184static 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 191static 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 204static 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 */ 212static 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 */ 223static 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 244static const char *jack_function[] = {"Headphone", "Mic", "Line", "Headset", 245 "Off"}; 246static const char *spk_function[] = {"On", "Off"}; 247static const struct soc_enum spitz_enum[] = { 248 SOC_ENUM_SINGLE_EXT(5, jack_function), 249 SOC_ENUM_SINGLE_EXT(2, spk_function), 250}; 251 252static 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/* spitz digital audio interface glue - connects codec <--> CPU */ 260static struct snd_soc_dai_link spitz_dai = { 261 .name = "wm8750", 262 .stream_name = "WM8750", 263 .cpu_dai_name = "pxa2xx-i2s", 264 .codec_dai_name = "wm8750-hifi", 265 .platform_name = "pxa-pcm-audio", 266 .codec_name = "wm8750.0-001b", 267 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | 268 SND_SOC_DAIFMT_CBS_CFS, 269 .ops = &spitz_ops, 270}; 271 272/* spitz audio machine driver */ 273static struct snd_soc_card snd_soc_spitz = { 274 .name = "Spitz", 275 .owner = THIS_MODULE, 276 .dai_link = &spitz_dai, 277 .num_links = 1, 278 279 .controls = wm8750_spitz_controls, 280 .num_controls = ARRAY_SIZE(wm8750_spitz_controls), 281 .dapm_widgets = wm8750_dapm_widgets, 282 .num_dapm_widgets = ARRAY_SIZE(wm8750_dapm_widgets), 283 .dapm_routes = spitz_audio_map, 284 .num_dapm_routes = ARRAY_SIZE(spitz_audio_map), 285 .fully_routed = true, 286}; 287 288static int spitz_probe(struct platform_device *pdev) 289{ 290 struct snd_soc_card *card = &snd_soc_spitz; 291 int ret; 292 293 if (machine_is_akita()) 294 spitz_mic_gpio = AKITA_GPIO_MIC_BIAS; 295 else 296 spitz_mic_gpio = SPITZ_GPIO_MIC_BIAS; 297 298 ret = gpio_request(spitz_mic_gpio, "MIC GPIO"); 299 if (ret) 300 goto err1; 301 302 ret = gpio_direction_output(spitz_mic_gpio, 0); 303 if (ret) 304 goto err2; 305 306 card->dev = &pdev->dev; 307 308 ret = snd_soc_register_card(card); 309 if (ret) { 310 dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n", 311 ret); 312 goto err2; 313 } 314 315 return 0; 316 317err2: 318 gpio_free(spitz_mic_gpio); 319err1: 320 return ret; 321} 322 323static int spitz_remove(struct platform_device *pdev) 324{ 325 struct snd_soc_card *card = platform_get_drvdata(pdev); 326 327 snd_soc_unregister_card(card); 328 gpio_free(spitz_mic_gpio); 329 return 0; 330} 331 332static struct platform_driver spitz_driver = { 333 .driver = { 334 .name = "spitz-audio", 335 .pm = &snd_soc_pm_ops, 336 }, 337 .probe = spitz_probe, 338 .remove = spitz_remove, 339}; 340 341module_platform_driver(spitz_driver); 342 343MODULE_AUTHOR("Richard Purdie"); 344MODULE_DESCRIPTION("ALSA SoC Spitz"); 345MODULE_LICENSE("GPL"); 346MODULE_ALIAS("platform:spitz-audio"); 347