1/* 2 * poodle.c -- SoC audio for Poodle 3 * 4 * Copyright 2005 Wolfson Microelectronics PLC. 5 * Copyright 2005 Openedhand Ltd. 6 * 7 * Authors: Liam Girdwood <liam.girdwood@wolfsonmicro.com> 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 <sound/driver.h> 23#include <sound/core.h> 24#include <sound/pcm.h> 25#include <sound/soc.h> 26#include <sound/soc-dapm.h> 27 28#include <asm/mach-types.h> 29#include <asm/hardware/locomo.h> 30#include <asm/arch/pxa-regs.h> 31#include <asm/arch/hardware.h> 32#include <asm/arch/poodle.h> 33#include <asm/arch/audio.h> 34 35#include "../codecs/wm8731.h" 36#include "pxa2xx-pcm.h" 37#include "pxa2xx-i2s.h" 38 39#define POODLE_HP 1 40#define POODLE_HP_OFF 0 41#define POODLE_SPK_ON 1 42#define POODLE_SPK_OFF 0 43 44 /* audio clock in Hz - rounded from 12.235MHz */ 45#define POODLE_AUDIO_CLOCK 12288000 46 47static int poodle_jack_func; 48static int poodle_spk_func; 49 50static void poodle_ext_control(struct snd_soc_codec *codec) 51{ 52 int spk = 0; 53 54 /* set up jack connection */ 55 if (poodle_jack_func == POODLE_HP) { 56 /* set = unmute headphone */ 57 locomo_gpio_write(&poodle_locomo_device.dev, 58 POODLE_LOCOMO_GPIO_MUTE_L, 1); 59 locomo_gpio_write(&poodle_locomo_device.dev, 60 POODLE_LOCOMO_GPIO_MUTE_R, 1); 61 snd_soc_dapm_set_endpoint(codec, "Headphone Jack", 1); 62 } else { 63 locomo_gpio_write(&poodle_locomo_device.dev, 64 POODLE_LOCOMO_GPIO_MUTE_L, 0); 65 locomo_gpio_write(&poodle_locomo_device.dev, 66 POODLE_LOCOMO_GPIO_MUTE_R, 0); 67 snd_soc_dapm_set_endpoint(codec, "Headphone Jack", 0); 68 } 69 70 if (poodle_spk_func == POODLE_SPK_ON) 71 spk = 1; 72 73 /* set the enpoints to their new connetion states */ 74 snd_soc_dapm_set_endpoint(codec, "Ext Spk", spk); 75 76 /* signal a DAPM event */ 77 snd_soc_dapm_sync_endpoints(codec); 78} 79 80static int poodle_startup(struct snd_pcm_substream *substream) 81{ 82 struct snd_soc_pcm_runtime *rtd = substream->private_data; 83 struct snd_soc_codec *codec = rtd->socdev->codec; 84 85 /* check the jack status at stream startup */ 86 poodle_ext_control(codec); 87 return 0; 88} 89 90/* we need to unmute the HP at shutdown as the mute burns power on poodle */ 91static int poodle_shutdown(struct snd_pcm_substream *substream) 92{ 93 struct snd_soc_pcm_runtime *rtd = substream->private_data; 94 struct snd_soc_codec *codec = rtd->socdev->codec; 95 96 /* set = unmute headphone */ 97 locomo_gpio_write(&poodle_locomo_device.dev, 98 POODLE_LOCOMO_GPIO_MUTE_L, 1); 99 locomo_gpio_write(&poodle_locomo_device.dev, 100 POODLE_LOCOMO_GPIO_MUTE_R, 1); 101 return 0; 102} 103 104static int poodle_hw_params(struct snd_pcm_substream *substream, 105 struct snd_pcm_hw_params *params) 106{ 107 struct snd_soc_pcm_runtime *rtd = substream->private_data; 108 struct snd_soc_codec_dai *codec_dai = rtd->dai->codec_dai; 109 struct snd_soc_cpu_dai *cpu_dai = rtd->dai->cpu_dai; 110 unsigned int clk = 0; 111 int ret = 0; 112 113 switch (params_rate(params)) { 114 case 8000: 115 case 16000: 116 case 48000: 117 case 96000: 118 clk = 12288000; 119 break; 120 case 11025: 121 case 22050: 122 case 44100: 123 clk = 11289600; 124 break; 125 } 126 127 /* set codec DAI configuration */ 128 ret = codec_dai->dai_ops.set_fmt(codec_dai, SND_SOC_DAIFMT_I2S | 129 SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS); 130 if (ret < 0) 131 return ret; 132 133 /* set cpu DAI configuration */ 134 ret = cpu_dai->dai_ops.set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S | 135 SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS); 136 if (ret < 0) 137 return ret; 138 139 /* set the codec system clock for DAC and ADC */ 140 ret = codec_dai->dai_ops.set_sysclk(codec_dai, WM8731_SYSCLK, clk, 141 SND_SOC_CLOCK_IN); 142 if (ret < 0) 143 return ret; 144 145 /* set the I2S system clock as input (unused) */ 146 ret = cpu_dai->dai_ops.set_sysclk(cpu_dai, PXA2XX_I2S_SYSCLK, 0, 147 SND_SOC_CLOCK_IN); 148 if (ret < 0) 149 return ret; 150 151 return 0; 152} 153 154static struct snd_soc_ops poodle_ops = { 155 .startup = poodle_startup, 156 .hw_params = poodle_hw_params, 157 .shutdown = poodle_shutdown, 158}; 159 160static int poodle_get_jack(struct snd_kcontrol *kcontrol, 161 struct snd_ctl_elem_value *ucontrol) 162{ 163 ucontrol->value.integer.value[0] = poodle_jack_func; 164 return 0; 165} 166 167static int poodle_set_jack(struct snd_kcontrol *kcontrol, 168 struct snd_ctl_elem_value *ucontrol) 169{ 170 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); 171 172 if (poodle_jack_func == ucontrol->value.integer.value[0]) 173 return 0; 174 175 poodle_jack_func = ucontrol->value.integer.value[0]; 176 poodle_ext_control(codec); 177 return 1; 178} 179 180static int poodle_get_spk(struct snd_kcontrol *kcontrol, 181 struct snd_ctl_elem_value *ucontrol) 182{ 183 ucontrol->value.integer.value[0] = poodle_spk_func; 184 return 0; 185} 186 187static int poodle_set_spk(struct snd_kcontrol *kcontrol, 188 struct snd_ctl_elem_value *ucontrol) 189{ 190 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); 191 192 if (poodle_spk_func == ucontrol->value.integer.value[0]) 193 return 0; 194 195 poodle_spk_func = ucontrol->value.integer.value[0]; 196 poodle_ext_control(codec); 197 return 1; 198} 199 200static int poodle_amp_event(struct snd_soc_dapm_widget *w, int event) 201{ 202 if (SND_SOC_DAPM_EVENT_ON(event)) 203 locomo_gpio_write(&poodle_locomo_device.dev, 204 POODLE_LOCOMO_GPIO_AMP_ON, 0); 205 else 206 locomo_gpio_write(&poodle_locomo_device.dev, 207 POODLE_LOCOMO_GPIO_AMP_ON, 1); 208 209 return 0; 210} 211 212/* poodle machine dapm widgets */ 213static const struct snd_soc_dapm_widget wm8731_dapm_widgets[] = { 214SND_SOC_DAPM_HP("Headphone Jack", NULL), 215SND_SOC_DAPM_SPK("Ext Spk", poodle_amp_event), 216}; 217 218/* Corgi machine audio_mapnections to the codec pins */ 219static const char *audio_map[][3] = { 220 221 /* headphone connected to LHPOUT1, RHPOUT1 */ 222 {"Headphone Jack", NULL, "LHPOUT"}, 223 {"Headphone Jack", NULL, "RHPOUT"}, 224 225 /* speaker connected to LOUT, ROUT */ 226 {"Ext Spk", NULL, "ROUT"}, 227 {"Ext Spk", NULL, "LOUT"}, 228 229 {NULL, NULL, NULL}, 230}; 231 232static const char *jack_function[] = {"Off", "Headphone"}; 233static const char *spk_function[] = {"Off", "On"}; 234static const struct soc_enum poodle_enum[] = { 235 SOC_ENUM_SINGLE_EXT(2, jack_function), 236 SOC_ENUM_SINGLE_EXT(2, spk_function), 237}; 238 239static const snd_kcontrol_new_t wm8731_poodle_controls[] = { 240 SOC_ENUM_EXT("Jack Function", poodle_enum[0], poodle_get_jack, 241 poodle_set_jack), 242 SOC_ENUM_EXT("Speaker Function", poodle_enum[1], poodle_get_spk, 243 poodle_set_spk), 244}; 245 246/* 247 * Logic for a wm8731 as connected on a Sharp SL-C7x0 Device 248 */ 249static int poodle_wm8731_init(struct snd_soc_codec *codec) 250{ 251 int i, err; 252 253 snd_soc_dapm_set_endpoint(codec, "LLINEIN", 0); 254 snd_soc_dapm_set_endpoint(codec, "RLINEIN", 0); 255 snd_soc_dapm_set_endpoint(codec, "MICIN", 1); 256 257 /* Add poodle specific controls */ 258 for (i = 0; i < ARRAY_SIZE(wm8731_poodle_controls); i++) { 259 err = snd_ctl_add(codec->card, 260 snd_soc_cnew(&wm8731_poodle_controls[i],codec, NULL)); 261 if (err < 0) 262 return err; 263 } 264 265 /* Add poodle specific widgets */ 266 for (i = 0; i < ARRAY_SIZE(wm8731_dapm_widgets); i++) { 267 snd_soc_dapm_new_control(codec, &wm8731_dapm_widgets[i]); 268 } 269 270 /* Set up poodle specific audio path audio_map */ 271 for (i = 0; audio_map[i][0] != NULL; i++) { 272 snd_soc_dapm_connect_input(codec, audio_map[i][0], 273 audio_map[i][1], audio_map[i][2]); 274 } 275 276 snd_soc_dapm_sync_endpoints(codec); 277 return 0; 278} 279 280/* poodle digital audio interface glue - connects codec <--> CPU */ 281static struct snd_soc_dai_link poodle_dai = { 282 .name = "WM8731", 283 .stream_name = "WM8731", 284 .cpu_dai = &pxa_i2s_dai, 285 .codec_dai = &wm8731_dai, 286 .init = poodle_wm8731_init, 287 .ops = &poodle_ops, 288}; 289 290/* poodle audio machine driver */ 291static struct snd_soc_machine snd_soc_machine_poodle = { 292 .name = "Poodle", 293 .dai_link = &poodle_dai, 294 .num_links = 1, 295}; 296 297/* poodle audio private data */ 298static struct wm8731_setup_data poodle_wm8731_setup = { 299 .i2c_address = 0x1b, 300}; 301 302/* poodle audio subsystem */ 303static struct snd_soc_device poodle_snd_devdata = { 304 .machine = &snd_soc_machine_poodle, 305 .platform = &pxa2xx_soc_platform, 306 .codec_dev = &soc_codec_dev_wm8731, 307 .codec_data = &poodle_wm8731_setup, 308}; 309 310static struct platform_device *poodle_snd_device; 311 312static int __init poodle_init(void) 313{ 314 int ret; 315 316 if (!machine_is_poodle()) 317 return -ENODEV; 318 319 locomo_gpio_set_dir(&poodle_locomo_device.dev, 320 POODLE_LOCOMO_GPIO_AMP_ON, 0); 321 /* should we mute HP at startup - burning power ?*/ 322 locomo_gpio_set_dir(&poodle_locomo_device.dev, 323 POODLE_LOCOMO_GPIO_MUTE_L, 0); 324 locomo_gpio_set_dir(&poodle_locomo_device.dev, 325 POODLE_LOCOMO_GPIO_MUTE_R, 0); 326 327 poodle_snd_device = platform_device_alloc("soc-audio", -1); 328 if (!poodle_snd_device) 329 return -ENOMEM; 330 331 platform_set_drvdata(poodle_snd_device, &poodle_snd_devdata); 332 poodle_snd_devdata.dev = &poodle_snd_device->dev; 333 ret = platform_device_add(poodle_snd_device); 334 335 if (ret) 336 platform_device_put(poodle_snd_device); 337 338 return ret; 339} 340 341static void __exit poodle_exit(void) 342{ 343 platform_device_unregister(poodle_snd_device); 344} 345 346module_init(poodle_init); 347module_exit(poodle_exit); 348 349/* Module information */ 350MODULE_AUTHOR("Richard Purdie"); 351MODULE_DESCRIPTION("ALSA SoC Poodle"); 352MODULE_LICENSE("GPL"); 353