| 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 <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/i2c.h> |
| 21 | #include <linux/interrupt.h> |
| 22 | #include <linux/platform_device.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 <asm/hardware/locomo.h> |
| 29 | #include <mach/poodle.h> |
| 30 | #include <mach/audio.h> |
| 31 | |
| 32 | #include "../codecs/wm8731.h" |
| 33 | #include "pxa2xx-i2s.h" |
| 34 | |
| 35 | #define POODLE_HP 1 |
| 36 | #define POODLE_HP_OFF 0 |
| 37 | #define POODLE_SPK_ON 1 |
| 38 | #define POODLE_SPK_OFF 0 |
| 39 | |
| 40 | /* audio clock in Hz - rounded from 12.235MHz */ |
| 41 | #define POODLE_AUDIO_CLOCK 12288000 |
| 42 | |
| 43 | static int poodle_jack_func; |
| 44 | static int poodle_spk_func; |
| 45 | |
| 46 | static void poodle_ext_control(struct snd_soc_codec *codec) |
| 47 | { |
| 48 | struct snd_soc_dapm_context *dapm = &codec->dapm; |
| 49 | |
| 50 | /* set up jack connection */ |
| 51 | if (poodle_jack_func == POODLE_HP) { |
| 52 | /* set = unmute headphone */ |
| 53 | locomo_gpio_write(&poodle_locomo_device.dev, |
| 54 | POODLE_LOCOMO_GPIO_MUTE_L, 1); |
| 55 | locomo_gpio_write(&poodle_locomo_device.dev, |
| 56 | POODLE_LOCOMO_GPIO_MUTE_R, 1); |
| 57 | snd_soc_dapm_enable_pin(dapm, "Headphone Jack"); |
| 58 | } else { |
| 59 | locomo_gpio_write(&poodle_locomo_device.dev, |
| 60 | POODLE_LOCOMO_GPIO_MUTE_L, 0); |
| 61 | locomo_gpio_write(&poodle_locomo_device.dev, |
| 62 | POODLE_LOCOMO_GPIO_MUTE_R, 0); |
| 63 | snd_soc_dapm_disable_pin(dapm, "Headphone Jack"); |
| 64 | } |
| 65 | |
| 66 | /* set the enpoints to their new connetion states */ |
| 67 | if (poodle_spk_func == POODLE_SPK_ON) |
| 68 | snd_soc_dapm_enable_pin(dapm, "Ext Spk"); |
| 69 | else |
| 70 | snd_soc_dapm_disable_pin(dapm, "Ext Spk"); |
| 71 | |
| 72 | /* signal a DAPM event */ |
| 73 | snd_soc_dapm_sync(dapm); |
| 74 | } |
| 75 | |
| 76 | static int poodle_startup(struct snd_pcm_substream *substream) |
| 77 | { |
| 78 | struct snd_soc_pcm_runtime *rtd = substream->private_data; |
| 79 | struct snd_soc_codec *codec = rtd->codec; |
| 80 | |
| 81 | mutex_lock(&codec->mutex); |
| 82 | |
| 83 | /* check the jack status at stream startup */ |
| 84 | poodle_ext_control(codec); |
| 85 | |
| 86 | mutex_unlock(&codec->mutex); |
| 87 | |
| 88 | return 0; |
| 89 | } |
| 90 | |
| 91 | /* we need to unmute the HP at shutdown as the mute burns power on poodle */ |
| 92 | static void poodle_shutdown(struct snd_pcm_substream *substream) |
| 93 | { |
| 94 | /* set = unmute headphone */ |
| 95 | locomo_gpio_write(&poodle_locomo_device.dev, |
| 96 | POODLE_LOCOMO_GPIO_MUTE_L, 1); |
| 97 | locomo_gpio_write(&poodle_locomo_device.dev, |
| 98 | POODLE_LOCOMO_GPIO_MUTE_R, 1); |
| 99 | } |
| 100 | |
| 101 | static int poodle_hw_params(struct snd_pcm_substream *substream, |
| 102 | struct snd_pcm_hw_params *params) |
| 103 | { |
| 104 | struct snd_soc_pcm_runtime *rtd = substream->private_data; |
| 105 | struct snd_soc_dai *codec_dai = rtd->codec_dai; |
| 106 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; |
| 107 | unsigned int clk = 0; |
| 108 | int ret = 0; |
| 109 | |
| 110 | switch (params_rate(params)) { |
| 111 | case 8000: |
| 112 | case 16000: |
| 113 | case 48000: |
| 114 | case 96000: |
| 115 | clk = 12288000; |
| 116 | break; |
| 117 | case 11025: |
| 118 | case 22050: |
| 119 | case 44100: |
| 120 | clk = 11289600; |
| 121 | break; |
| 122 | } |
| 123 | |
| 124 | /* set codec DAI configuration */ |
| 125 | ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S | |
| 126 | SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS); |
| 127 | if (ret < 0) |
| 128 | return ret; |
| 129 | |
| 130 | /* set cpu DAI configuration */ |
| 131 | ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S | |
| 132 | SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS); |
| 133 | if (ret < 0) |
| 134 | return ret; |
| 135 | |
| 136 | /* set the codec system clock for DAC and ADC */ |
| 137 | ret = snd_soc_dai_set_sysclk(codec_dai, WM8731_SYSCLK_XTAL, clk, |
| 138 | SND_SOC_CLOCK_IN); |
| 139 | if (ret < 0) |
| 140 | return ret; |
| 141 | |
| 142 | /* set the I2S system clock as input (unused) */ |
| 143 | ret = snd_soc_dai_set_sysclk(cpu_dai, PXA2XX_I2S_SYSCLK, 0, |
| 144 | SND_SOC_CLOCK_IN); |
| 145 | if (ret < 0) |
| 146 | return ret; |
| 147 | |
| 148 | return 0; |
| 149 | } |
| 150 | |
| 151 | static struct snd_soc_ops poodle_ops = { |
| 152 | .startup = poodle_startup, |
| 153 | .hw_params = poodle_hw_params, |
| 154 | .shutdown = poodle_shutdown, |
| 155 | }; |
| 156 | |
| 157 | static int poodle_get_jack(struct snd_kcontrol *kcontrol, |
| 158 | struct snd_ctl_elem_value *ucontrol) |
| 159 | { |
| 160 | ucontrol->value.integer.value[0] = poodle_jack_func; |
| 161 | return 0; |
| 162 | } |
| 163 | |
| 164 | static int poodle_set_jack(struct snd_kcontrol *kcontrol, |
| 165 | struct snd_ctl_elem_value *ucontrol) |
| 166 | { |
| 167 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); |
| 168 | |
| 169 | if (poodle_jack_func == ucontrol->value.integer.value[0]) |
| 170 | return 0; |
| 171 | |
| 172 | poodle_jack_func = ucontrol->value.integer.value[0]; |
| 173 | poodle_ext_control(codec); |
| 174 | return 1; |
| 175 | } |
| 176 | |
| 177 | static int poodle_get_spk(struct snd_kcontrol *kcontrol, |
| 178 | struct snd_ctl_elem_value *ucontrol) |
| 179 | { |
| 180 | ucontrol->value.integer.value[0] = poodle_spk_func; |
| 181 | return 0; |
| 182 | } |
| 183 | |
| 184 | static int poodle_set_spk(struct snd_kcontrol *kcontrol, |
| 185 | struct snd_ctl_elem_value *ucontrol) |
| 186 | { |
| 187 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); |
| 188 | |
| 189 | if (poodle_spk_func == ucontrol->value.integer.value[0]) |
| 190 | return 0; |
| 191 | |
| 192 | poodle_spk_func = ucontrol->value.integer.value[0]; |
| 193 | poodle_ext_control(codec); |
| 194 | return 1; |
| 195 | } |
| 196 | |
| 197 | static int poodle_amp_event(struct snd_soc_dapm_widget *w, |
| 198 | struct snd_kcontrol *k, int event) |
| 199 | { |
| 200 | if (SND_SOC_DAPM_EVENT_ON(event)) |
| 201 | locomo_gpio_write(&poodle_locomo_device.dev, |
| 202 | POODLE_LOCOMO_GPIO_AMP_ON, 0); |
| 203 | else |
| 204 | locomo_gpio_write(&poodle_locomo_device.dev, |
| 205 | POODLE_LOCOMO_GPIO_AMP_ON, 1); |
| 206 | |
| 207 | return 0; |
| 208 | } |
| 209 | |
| 210 | /* poodle machine dapm widgets */ |
| 211 | static const struct snd_soc_dapm_widget wm8731_dapm_widgets[] = { |
| 212 | SND_SOC_DAPM_HP("Headphone Jack", NULL), |
| 213 | SND_SOC_DAPM_SPK("Ext Spk", poodle_amp_event), |
| 214 | }; |
| 215 | |
| 216 | /* Corgi machine connections to the codec pins */ |
| 217 | static const struct snd_soc_dapm_route audio_map[] = { |
| 218 | |
| 219 | /* headphone connected to LHPOUT1, RHPOUT1 */ |
| 220 | {"Headphone Jack", NULL, "LHPOUT"}, |
| 221 | {"Headphone Jack", NULL, "RHPOUT"}, |
| 222 | |
| 223 | /* speaker connected to LOUT, ROUT */ |
| 224 | {"Ext Spk", NULL, "ROUT"}, |
| 225 | {"Ext Spk", NULL, "LOUT"}, |
| 226 | }; |
| 227 | |
| 228 | static const char *jack_function[] = {"Off", "Headphone"}; |
| 229 | static const char *spk_function[] = {"Off", "On"}; |
| 230 | static const struct soc_enum poodle_enum[] = { |
| 231 | SOC_ENUM_SINGLE_EXT(2, jack_function), |
| 232 | SOC_ENUM_SINGLE_EXT(2, spk_function), |
| 233 | }; |
| 234 | |
| 235 | static const struct snd_kcontrol_new wm8731_poodle_controls[] = { |
| 236 | SOC_ENUM_EXT("Jack Function", poodle_enum[0], poodle_get_jack, |
| 237 | poodle_set_jack), |
| 238 | SOC_ENUM_EXT("Speaker Function", poodle_enum[1], poodle_get_spk, |
| 239 | poodle_set_spk), |
| 240 | }; |
| 241 | |
| 242 | /* |
| 243 | * Logic for a wm8731 as connected on a Sharp SL-C7x0 Device |
| 244 | */ |
| 245 | static int poodle_wm8731_init(struct snd_soc_pcm_runtime *rtd) |
| 246 | { |
| 247 | struct snd_soc_codec *codec = rtd->codec; |
| 248 | struct snd_soc_dapm_context *dapm = &codec->dapm; |
| 249 | int err; |
| 250 | |
| 251 | snd_soc_dapm_nc_pin(dapm, "LLINEIN"); |
| 252 | snd_soc_dapm_nc_pin(dapm, "RLINEIN"); |
| 253 | snd_soc_dapm_enable_pin(dapm, "MICIN"); |
| 254 | |
| 255 | /* Add poodle specific controls */ |
| 256 | err = snd_soc_add_controls(codec, wm8731_poodle_controls, |
| 257 | ARRAY_SIZE(wm8731_poodle_controls)); |
| 258 | if (err < 0) |
| 259 | return err; |
| 260 | |
| 261 | /* Add poodle specific widgets */ |
| 262 | snd_soc_dapm_new_controls(dapm, wm8731_dapm_widgets, |
| 263 | ARRAY_SIZE(wm8731_dapm_widgets)); |
| 264 | |
| 265 | /* Set up poodle specific audio path audio_map */ |
| 266 | snd_soc_dapm_add_routes(dapm, audio_map, ARRAY_SIZE(audio_map)); |
| 267 | |
| 268 | return 0; |
| 269 | } |
| 270 | |
| 271 | /* poodle digital audio interface glue - connects codec <--> CPU */ |
| 272 | static struct snd_soc_dai_link poodle_dai = { |
| 273 | .name = "WM8731", |
| 274 | .stream_name = "WM8731", |
| 275 | .cpu_dai_name = "pxa2xx-i2s", |
| 276 | .codec_dai_name = "wm8731-hifi", |
| 277 | .platform_name = "pxa-pcm-audio", |
| 278 | .codec_name = "wm8731.0-001b", |
| 279 | .init = poodle_wm8731_init, |
| 280 | .ops = &poodle_ops, |
| 281 | }; |
| 282 | |
| 283 | /* poodle audio machine driver */ |
| 284 | static struct snd_soc_card snd_soc_poodle = { |
| 285 | .name = "Poodle", |
| 286 | .dai_link = &poodle_dai, |
| 287 | .num_links = 1, |
| 288 | .owner = THIS_MODULE, |
| 289 | }; |
| 290 | |
| 291 | static struct platform_device *poodle_snd_device; |
| 292 | |
| 293 | static int __init poodle_init(void) |
| 294 | { |
| 295 | int ret; |
| 296 | |
| 297 | if (!machine_is_poodle()) |
| 298 | return -ENODEV; |
| 299 | |
| 300 | locomo_gpio_set_dir(&poodle_locomo_device.dev, |
| 301 | POODLE_LOCOMO_GPIO_AMP_ON, 0); |
| 302 | /* should we mute HP at startup - burning power ?*/ |
| 303 | locomo_gpio_set_dir(&poodle_locomo_device.dev, |
| 304 | POODLE_LOCOMO_GPIO_MUTE_L, 0); |
| 305 | locomo_gpio_set_dir(&poodle_locomo_device.dev, |
| 306 | POODLE_LOCOMO_GPIO_MUTE_R, 0); |
| 307 | |
| 308 | poodle_snd_device = platform_device_alloc("soc-audio", -1); |
| 309 | if (!poodle_snd_device) |
| 310 | return -ENOMEM; |
| 311 | |
| 312 | platform_set_drvdata(poodle_snd_device, &snd_soc_poodle); |
| 313 | ret = platform_device_add(poodle_snd_device); |
| 314 | |
| 315 | if (ret) |
| 316 | platform_device_put(poodle_snd_device); |
| 317 | |
| 318 | return ret; |
| 319 | } |
| 320 | |
| 321 | static void __exit poodle_exit(void) |
| 322 | { |
| 323 | platform_device_unregister(poodle_snd_device); |
| 324 | } |
| 325 | |
| 326 | module_init(poodle_init); |
| 327 | module_exit(poodle_exit); |
| 328 | |
| 329 | /* Module information */ |
| 330 | MODULE_AUTHOR("Richard Purdie"); |
| 331 | MODULE_DESCRIPTION("ALSA SoC Poodle"); |
| 332 | MODULE_LICENSE("GPL"); |