target/linux/xburst/patches-2.6.34/066-n516-sound.patch

   1 From 34b6a12e70e8260cf273dab7e618602df0c1bebe Mon Sep 17 00:00:00 2001
   2 From: Lars-Peter Clausen <lars@metafoo.de>
   3 Date: Sat, 24 Apr 2010 12:37:47 +0200
   4 Subject: [PATCH] Add N516 sound SoC board driver
   5
   6 ---
   7  sound/soc/jz4740/Kconfig  |    8 ++
   8  sound/soc/jz4740/Makefile |    2 +
   9  sound/soc/jz4740/n516.c   |  303 +++++++++++++++++++++++++++++++++++++++++++++
  10  3 files changed, 313 insertions(+), 0 deletions(-)
  11  create mode 100644 sound/soc/jz4740/n516.c
  12
  13 diff --git a/sound/soc/jz4740/Kconfig b/sound/soc/jz4740/Kconfig
  14 index e546c30..fea440d 100644
  15 --- a/sound/soc/jz4740/Kconfig
  16 +++ b/sound/soc/jz4740/Kconfig
  17 @@ -19,3 +19,11 @@ config SND_JZ4740_SOC_QI_LB60
  18      select SND_SOC_JZCODEC
  19         help
  20           Say Y if you want to add support for SoC audio of internal codec on Ingenic Jz4740 QI_LB60 board.
  21 +
  22 +config SND_JZ4740_SOC_N516
  23 +       tristate "SoC Audio support for Hanvon N516 eBook reader"
  24 +       depends on SND_JZ4740_SOC && JZ4740_N516
  25 +       select SND_JZ4740_SOC_I2S
  26 +    select SND_SOC_JZCODEC
  27 +       help
  28 +         Say Y if you want to enable support for SoC audio on the Hanvon N516.
  29 diff --git a/sound/soc/jz4740/Makefile b/sound/soc/jz4740/Makefile
  30 index be873c1..b64d912 100644
  31 --- a/sound/soc/jz4740/Makefile
  32 +++ b/sound/soc/jz4740/Makefile
  33 @@ -9,5 +9,7 @@ obj-$(CONFIG_SND_JZ4740_SOC_I2S) += snd-soc-jz4740-i2s.o
  34
  35  # Jz4740 Machine Support
  36  snd-soc-qi-lb60-objs := qi_lb60.o
  37 +snd-soc-n516-objs := n516.o
  38
  39  obj-$(CONFIG_SND_JZ4740_SOC_QI_LB60) += snd-soc-qi-lb60.o
  40 +obj-$(CONFIG_SND_JZ4740_SOC_N516) += snd-soc-n516.o
  41 diff --git a/sound/soc/jz4740/n516.c b/sound/soc/jz4740/n516.c
  42 new file mode 100644
  43 index 0000000..9cb51c2
  44 --- /dev/null
  45 +++ b/sound/soc/jz4740/n516.c
  46 @@ -0,0 +1,303 @@
  47 +/*
  48 + * Copyright (C) 2009, Yauhen Kharuzhy <jekhor@gmail.com>
  49 + *  OpenInkpot project
  50 + * Copyright (C) 2010, Lars-Peter Clausen <lars@metafoo.de>
  51 + *
  52 + * This program is free software; you can redistribute it and/or modify
  53 + * it under the terms of the GNU General Public License version 2 as
  54 + * published by the Free Software Foundation.
  55 + *
  56 + * You should have received a copy of the  GNU General Public License along
  57 + * with this program; if not, write  to the Free Software Foundation, Inc.,
  58 + * 675 Mass Ave, Cambridge, MA 02139, USA.
  59 + *
  60 + */
  61 +
  62 +#include <linux/module.h>
  63 +#include <linux/interrupt.h>
  64 +#include <linux/platform_device.h>
  65 +#include <sound/core.h>
  66 +#include <sound/pcm.h>
  67 +#include <sound/soc.h>
  68 +#include <sound/soc-dapm.h>
  69 +#include <sound/jack.h>
  70 +#include <linux/gpio.h>
  71 +#include <linux/workqueue.h>
  72 +
  73 +#include "../codecs/jzcodec.h"
  74 +#include "jz4740-pcm.h"
  75 +#include "jz4740-i2s.h"
  76 +
  77 +#include <asm/mach-jz4740/board-n516.h>
  78 +
  79 +enum {
  80 +       N516_SPEAKER_AUTO = 0,
  81 +       N516_SPEAKER_OFF = 1,
  82 +       N516_SPEAKER_ON = 2,
  83 +};
  84 +
  85 +static int n516_speaker_mode;
  86 +static struct snd_soc_codec *n516_codec;
  87 +static struct work_struct n516_headphone_work;
  88 +
  89 +static void n516_ext_control(void)
  90 +{
  91 +       if (!n516_codec)
  92 +               return;
  93 +
  94 +       switch (n516_speaker_mode) {
  95 +       case N516_SPEAKER_ON:
  96 +               snd_soc_dapm_enable_pin(n516_codec, "Speaker");
  97 +               break;
  98 +       case N516_SPEAKER_OFF:
  99 +               snd_soc_dapm_disable_pin(n516_codec, "Speaker");
 100 +           break;
 101 +       case N516_SPEAKER_AUTO:
 102 +               if (snd_soc_dapm_get_pin_status(n516_codec, "Headphone"))
 103 +                       snd_soc_dapm_disable_pin(n516_codec, "Speaker");
 104 +               else
 105 +                       snd_soc_dapm_enable_pin(n516_codec, "Speaker");
 106 +               break;
 107 +       default:
 108 +               break;
 109 +       }
 110 +
 111 +    /* signal a DAPM event */
 112 +    snd_soc_dapm_sync(n516_codec);
 113 +}
 114 +
 115 +static int n516_speaker_event(struct snd_soc_dapm_widget *widget,
 116 +                            struct snd_kcontrol *ctrl, int event)
 117 +{
 118 +       int on = !SND_SOC_DAPM_EVENT_OFF(event);
 119 +
 120 +       gpio_set_value(GPIO_SPEAKER_ENABLE, on);
 121 +
 122 +       return 0;
 123 +}
 124 +
 125 +static void n516_headphone_event_work(struct work_struct *work)
 126 +{
 127 +       n516_ext_control();
 128 +}
 129 +
 130 +static int n516_headphone_event(struct snd_soc_dapm_widget *widget,
 131 +                            struct snd_kcontrol *ctrl, int event)
 132 +{
 133 +       /* We can't call soc_dapm_sync from a event handler */
 134 +       if (event & (SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_POST_PMD))
 135 +               schedule_work(&n516_headphone_work);
 136 +       return 0;
 137 +}
 138 +
 139 +static const struct snd_soc_dapm_widget n516_widgets[] = {
 140 +       SND_SOC_DAPM_SPK("Speaker", n516_speaker_event),
 141 +       SND_SOC_DAPM_HP("Headphone", n516_headphone_event),
 142 +       SND_SOC_DAPM_MIC("Mic", NULL),
 143 +};
 144 +
 145 +static const struct snd_soc_dapm_route n516_routes[] = {
 146 +       {"Mic", NULL, "MIC"},
 147 +       {"Speaker", NULL, "LOUT"},
 148 +       {"Speaker", NULL, "ROUT"},
 149 +       {"Headphone", NULL, "LOUT"},
 150 +       {"Headphone", NULL, "ROUT"},
 151 +};
 152 +
 153 +static const char *n516_speaker_modes[] = {"Auto", "Off", "On"};
 154 +static const struct soc_enum n516_speaker_mode_enum =
 155 +       SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(n516_speaker_modes), n516_speaker_modes);
 156 +
 157 +static int n516_get_speaker_mode(struct snd_kcontrol *kcontrol,
 158 +       struct snd_ctl_elem_value *ucontrol)
 159 +{
 160 +       ucontrol->value.integer.value[0] = n516_speaker_mode;
 161 +       return 0;
 162 +}
 163 +
 164 +static int n516_set_speaker_mode(struct snd_kcontrol *kcontrol,
 165 +       struct snd_ctl_elem_value *ucontrol)
 166 +{
 167 +       if (n516_speaker_mode == ucontrol->value.integer.value[0])
 168 +               return 0;
 169 +
 170 +       n516_speaker_mode = ucontrol->value.integer.value[0];
 171 +       n516_ext_control();
 172 +       return 1;
 173 +}
 174 +
 175 +static const struct snd_kcontrol_new n516_controls[] = {
 176 +       SOC_ENUM_EXT("Speaker Function", n516_speaker_mode_enum,
 177 +               n516_get_speaker_mode, n516_set_speaker_mode),
 178 +};
 179 +
 180 +#define N516_DAIFMT (SND_SOC_DAIFMT_I2S | \
 181 +                       SND_SOC_DAIFMT_NB_NF | \
 182 +                       SND_SOC_DAIFMT_CBM_CFM)
 183 +
 184 +static int n516_codec_init(struct snd_soc_codec *codec)
 185 +{
 186 +       int ret;
 187 +       struct snd_soc_dai *cpu_dai = codec->socdev->card->dai_link->cpu_dai;
 188 +       struct snd_soc_dai *codec_dai = codec->socdev->card->dai_link->codec_dai;
 189 +
 190 +       n516_codec = codec;
 191 +
 192 +       snd_soc_dapm_nc_pin(codec, "LIN");
 193 +       snd_soc_dapm_nc_pin(codec, "RIN");
 194 +
 195 +       ret = snd_soc_dai_set_fmt(codec_dai, N516_DAIFMT);
 196 +       if (ret < 0) {
 197 +               dev_err(codec->dev, "Failed to set codec dai format: %d\n", ret);
 198 +               return ret;
 199 +       }
 200 +
 201 +       ret = snd_soc_dai_set_fmt(cpu_dai, N516_DAIFMT);
 202 +       if (ret < 0) {
 203 +               dev_err(codec->dev, "Failed to set cpu dai format: %d\n", ret);
 204 +               return ret;
 205 +       }
 206 +
 207 +       ret = snd_soc_dai_set_sysclk(codec_dai, JZCODEC_SYSCLK, 111,
 208 +               SND_SOC_CLOCK_IN);
 209 +       if (ret < 0) {
 210 +               dev_err(codec->dev, "Failed to set codec dai sysclk: %d\n", ret);
 211 +               return ret;
 212 +       }
 213 +
 214 +       ret = snd_soc_add_controls(codec, n516_controls,
 215 +               ARRAY_SIZE(n516_controls));
 216 +       if (ret) {
 217 +               dev_err(codec->dev, "Failed to add controls: %d\n", ret);
 218 +               return ret;
 219 +       }
 220 +
 221 +
 222 +       ret = snd_soc_dapm_new_controls(codec, n516_widgets,
 223 +               ARRAY_SIZE(n516_widgets));
 224 +       if (ret) {
 225 +               dev_err(codec->dev, "Failed to add dapm controls: %d\n", ret);
 226 +               return ret;
 227 +       }
 228 +
 229 +       ret = snd_soc_dapm_add_routes(codec, n516_routes, ARRAY_SIZE(n516_routes));
 230 +       if (ret) {
 231 +               dev_err(codec->dev, "Failed to add dapm routes: %d\n", ret);
 232 +               return ret;
 233 +       }
 234 +
 235 +       snd_soc_dapm_sync(codec);
 236 +
 237 +       return 0;
 238 +}
 239 +
 240 +static struct snd_soc_dai_link n516_dai = {
 241 +       .name = "jz-codec",
 242 +       .stream_name = "JZCODEC",
 243 +       .cpu_dai = &jz4740_i2s_dai,
 244 +       .codec_dai = &jz_codec_dai,
 245 +       .init = n516_codec_init,
 246 +};
 247 +
 248 +static struct snd_soc_card n516_card = {
 249 +       .name = "N516",
 250 +       .dai_link = &n516_dai,
 251 +       .num_links = 1,
 252 +       .platform = &jz4740_soc_platform,
 253 +};
 254 +
 255 +static struct snd_soc_device n516_snd_devdata = {
 256 +       .card = &n516_card,
 257 +       .codec_dev = &soc_codec_dev_jzcodec,
 258 +};
 259 +
 260 +static struct platform_device *n516_snd_device;
 261 +
 262 +static struct snd_soc_jack n516_hp_jack;
 263 +
 264 +static struct snd_soc_jack_pin n516_hp_pin = {
 265 +       .pin = "Headphone",
 266 +       .mask = SND_JACK_HEADPHONE,
 267 +};
 268 +
 269 +static struct snd_soc_jack_gpio n516_hp_gpio = {
 270 +       .gpio = GPIO_HPHONE_DETECT,
 271 +       .name = "Headphone detect",
 272 +       .report = SND_JACK_HEADPHONE,
 273 +       .debounce_time = 100,
 274 +};
 275 +
 276 +static int __init n516_add_headphone_jack(void)
 277 +{
 278 +       int ret;
 279 +
 280 +       ret = snd_soc_jack_new(&n516_card, "Headphone jack",
 281 +               SND_JACK_HEADPHONE, &n516_hp_jack);
 282 +       if (ret)
 283 +               return ret;
 284 +
 285 +       ret = snd_soc_jack_add_pins(&n516_hp_jack, 1, &n516_hp_pin);
 286 +       if (ret)
 287 +               return ret;
 288 +
 289 +       ret = snd_soc_jack_add_gpios(&n516_hp_jack, 1, &n516_hp_gpio);
 290 +
 291 +       return ret;
 292 +}
 293 +
 294 +static int __init n516_init(void)
 295 +{
 296 +       int ret;
 297 +
 298 +       n516_snd_device = platform_device_alloc("soc-audio", -1);
 299 +
 300 +       if (!n516_snd_device)
 301 +               return -ENOMEM;
 302 +
 303 +       ret = gpio_request(GPIO_SPEAKER_ENABLE, "Speaker enable");
 304 +       if (ret) {
 305 +               pr_err("n516 snd: Failed to request SPEAKER_ENABLE GPIO(%d): %d\n",
 306 +                               GPIO_SPEAKER_ENABLE, ret);
 307 +               goto err_device_put;
 308 +       }
 309 +
 310 +       gpio_direction_output(GPIO_SPEAKER_ENABLE, 0);
 311 +       INIT_WORK(&n516_headphone_work, n516_headphone_event_work);
 312 +
 313 +       platform_set_drvdata(n516_snd_device, &n516_snd_devdata);
 314 +       n516_snd_devdata.dev = &n516_snd_device->dev;
 315 +       ret = platform_device_add(n516_snd_device);
 316 +       if (ret) {
 317 +               pr_err("n516 snd: Failed to add snd soc device: %d\n", ret);
 318 +               goto err_unset_pdata;
 319 +       }
 320 +
 321 +       ret = n516_add_headphone_jack();
 322 +       /* We can live without it, so just print a warning */
 323 +       if (ret)
 324 +               pr_warning("n516 snd: Failed to initalise headphone jack: %d\n", ret);
 325 +
 326 +       return 0;
 327 +
 328 +err_unset_pdata:
 329 +       platform_set_drvdata(n516_snd_device, NULL);
 330 +/*err_gpio_free_speaker:*/
 331 +       gpio_free(GPIO_SPEAKER_ENABLE);
 332 +err_device_put:
 333 +       platform_device_put(n516_snd_device);
 334 +
 335 +       return ret;
 336 +}
 337 +module_init(n516_init);
 338 +
 339 +static void __exit n516_exit(void)
 340 +{
 341 +       snd_soc_jack_free_gpios(&n516_hp_jack, 1, &n516_hp_gpio);
 342 +       gpio_free(GPIO_SPEAKER_ENABLE);
 343 +       platform_device_unregister(n516_snd_device);
 344 +}
 345 +module_exit(n516_exit);
 346 +
 347 +MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>");
 348 +MODULE_DESCRIPTION("ALSA SoC N516 Audio support");
 349 +MODULE_LICENSE("GPL v2");
 350 --
 351 1.5.6.5
 352