2 * poodle.c -- SoC audio for Poodle
4 * Copyright 2005 Wolfson Microelectronics PLC.
5 * Copyright 2005 Openedhand Ltd.
7 * Authors: Liam Girdwood <lrg@slimlogic.co.uk>
8 * Richard Purdie <richard@openedhand.com>
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.
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 #include <sound/soc-dapm.h>
28 #include <asm/mach-types.h>
29 #include <asm/hardware/locomo.h>
30 #include <mach/poodle.h>
31 #include <mach/audio.h>
33 #include "../codecs/wm8731.h"
34 #include "pxa2xx-pcm.h"
35 #include "pxa2xx-i2s.h"
38 #define POODLE_HP_OFF 0
39 #define POODLE_SPK_ON 1
40 #define POODLE_SPK_OFF 0
42 /* audio clock in Hz - rounded from 12.235MHz */
43 #define POODLE_AUDIO_CLOCK 12288000
45 static int poodle_jack_func;
46 static int poodle_spk_func;
48 static void poodle_ext_control(struct snd_soc_codec *codec)
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(codec, "Headphone Jack");
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(codec, "Headphone Jack");
66 /* set the enpoints to their new connetion states */
67 if (poodle_spk_func == POODLE_SPK_ON)
68 snd_soc_dapm_enable_pin(codec, "Ext Spk");
70 snd_soc_dapm_disable_pin(codec, "Ext Spk");
72 /* signal a DAPM event */
73 snd_soc_dapm_sync(codec);
76 static int poodle_startup(struct snd_pcm_substream *substream)
78 struct snd_soc_pcm_runtime *rtd = substream->private_data;
79 struct snd_soc_codec *codec = rtd->socdev->card->codec;
81 /* check the jack status at stream startup */
82 poodle_ext_control(codec);
86 /* we need to unmute the HP at shutdown as the mute burns power on poodle */
87 static void poodle_shutdown(struct snd_pcm_substream *substream)
89 /* set = unmute headphone */
90 locomo_gpio_write(&poodle_locomo_device.dev,
91 POODLE_LOCOMO_GPIO_MUTE_L, 1);
92 locomo_gpio_write(&poodle_locomo_device.dev,
93 POODLE_LOCOMO_GPIO_MUTE_R, 1);
96 static int poodle_hw_params(struct snd_pcm_substream *substream,
97 struct snd_pcm_hw_params *params)
99 struct snd_soc_pcm_runtime *rtd = substream->private_data;
100 struct snd_soc_dai *codec_dai = rtd->dai->codec_dai;
101 struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
102 unsigned int clk = 0;
105 switch (params_rate(params)) {
119 /* set codec DAI configuration */
120 ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S |
121 SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS);
125 /* set cpu DAI configuration */
126 ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S |
127 SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS);
131 /* set the codec system clock for DAC and ADC */
132 ret = snd_soc_dai_set_sysclk(codec_dai, WM8731_SYSCLK, clk,
137 /* set the I2S system clock as input (unused) */
138 ret = snd_soc_dai_set_sysclk(cpu_dai, PXA2XX_I2S_SYSCLK, 0,
146 static struct snd_soc_ops poodle_ops = {
147 .startup = poodle_startup,
148 .hw_params = poodle_hw_params,
149 .shutdown = poodle_shutdown,
152 static int poodle_get_jack(struct snd_kcontrol *kcontrol,
153 struct snd_ctl_elem_value *ucontrol)
155 ucontrol->value.integer.value[0] = poodle_jack_func;
159 static int poodle_set_jack(struct snd_kcontrol *kcontrol,
160 struct snd_ctl_elem_value *ucontrol)
162 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
164 if (poodle_jack_func == ucontrol->value.integer.value[0])
167 poodle_jack_func = ucontrol->value.integer.value[0];
168 poodle_ext_control(codec);
172 static int poodle_get_spk(struct snd_kcontrol *kcontrol,
173 struct snd_ctl_elem_value *ucontrol)
175 ucontrol->value.integer.value[0] = poodle_spk_func;
179 static int poodle_set_spk(struct snd_kcontrol *kcontrol,
180 struct snd_ctl_elem_value *ucontrol)
182 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
184 if (poodle_spk_func == ucontrol->value.integer.value[0])
187 poodle_spk_func = ucontrol->value.integer.value[0];
188 poodle_ext_control(codec);
192 static int poodle_amp_event(struct snd_soc_dapm_widget *w,
193 struct snd_kcontrol *k, int event)
195 if (SND_SOC_DAPM_EVENT_ON(event))
196 locomo_gpio_write(&poodle_locomo_device.dev,
197 POODLE_LOCOMO_GPIO_AMP_ON, 0);
199 locomo_gpio_write(&poodle_locomo_device.dev,
200 POODLE_LOCOMO_GPIO_AMP_ON, 1);
205 /* poodle machine dapm widgets */
206 static const struct snd_soc_dapm_widget wm8731_dapm_widgets[] = {
207 SND_SOC_DAPM_HP("Headphone Jack", NULL),
208 SND_SOC_DAPM_SPK("Ext Spk", poodle_amp_event),
211 /* Corgi machine connections to the codec pins */
212 static const struct snd_soc_dapm_route audio_map[] = {
214 /* headphone connected to LHPOUT1, RHPOUT1 */
215 {"Headphone Jack", NULL, "LHPOUT"},
216 {"Headphone Jack", NULL, "RHPOUT"},
218 /* speaker connected to LOUT, ROUT */
219 {"Ext Spk", NULL, "ROUT"},
220 {"Ext Spk", NULL, "LOUT"},
223 static const char *jack_function[] = {"Off", "Headphone"};
224 static const char *spk_function[] = {"Off", "On"};
225 static const struct soc_enum poodle_enum[] = {
226 SOC_ENUM_SINGLE_EXT(2, jack_function),
227 SOC_ENUM_SINGLE_EXT(2, spk_function),
230 static const struct snd_kcontrol_new wm8731_poodle_controls[] = {
231 SOC_ENUM_EXT("Jack Function", poodle_enum[0], poodle_get_jack,
233 SOC_ENUM_EXT("Speaker Function", poodle_enum[1], poodle_get_spk,
238 * Logic for a wm8731 as connected on a Sharp SL-C7x0 Device
240 static int poodle_wm8731_init(struct snd_soc_codec *codec)
244 snd_soc_dapm_nc_pin(codec, "LLINEIN");
245 snd_soc_dapm_nc_pin(codec, "RLINEIN");
246 snd_soc_dapm_enable_pin(codec, "MICIN");
248 /* Add poodle specific controls */
249 err = snd_soc_add_controls(codec, wm8731_poodle_controls,
250 ARRAY_SIZE(wm8731_poodle_controls));
254 /* Add poodle specific widgets */
255 snd_soc_dapm_new_controls(codec, wm8731_dapm_widgets,
256 ARRAY_SIZE(wm8731_dapm_widgets));
258 /* Set up poodle specific audio path audio_map */
259 snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));
261 snd_soc_dapm_sync(codec);
265 /* poodle digital audio interface glue - connects codec <--> CPU */
266 static struct snd_soc_dai_link poodle_dai = {
268 .stream_name = "WM8731",
269 .cpu_dai = &pxa_i2s_dai,
270 .codec_dai = &wm8731_dai,
271 .init = poodle_wm8731_init,
275 /* poodle audio machine driver */
276 static struct snd_soc_card snd_soc_poodle = {
278 .platform = &pxa2xx_soc_platform,
279 .dai_link = &poodle_dai,
284 * FIXME: This is a temporary bodge to avoid cross-tree merge issues.
285 * New drivers should register the wm8731 I2C device in the machine
286 * setup code (under arch/arm for ARM systems).
288 static int wm8731_i2c_register(void)
290 struct i2c_board_info info;
291 struct i2c_adapter *adapter;
292 struct i2c_client *client;
294 memset(&info, 0, sizeof(struct i2c_board_info));
296 strlcpy(info.type, "wm8731", I2C_NAME_SIZE);
298 adapter = i2c_get_adapter(0);
300 printk(KERN_ERR "can't get i2c adapter 0\n");
304 client = i2c_new_device(adapter, &info);
305 i2c_put_adapter(adapter);
307 printk(KERN_ERR "can't add i2c device at 0x%x\n",
308 (unsigned int)info.addr);
315 /* poodle audio subsystem */
316 static struct snd_soc_device poodle_snd_devdata = {
317 .card = &snd_soc_poodle,
318 .codec_dev = &soc_codec_dev_wm8731,
321 static struct platform_device *poodle_snd_device;
323 static int __init poodle_init(void)
327 if (!machine_is_poodle())
330 ret = wm8731_i2c_register();
334 locomo_gpio_set_dir(&poodle_locomo_device.dev,
335 POODLE_LOCOMO_GPIO_AMP_ON, 0);
336 /* should we mute HP at startup - burning power ?*/
337 locomo_gpio_set_dir(&poodle_locomo_device.dev,
338 POODLE_LOCOMO_GPIO_MUTE_L, 0);
339 locomo_gpio_set_dir(&poodle_locomo_device.dev,
340 POODLE_LOCOMO_GPIO_MUTE_R, 0);
342 poodle_snd_device = platform_device_alloc("soc-audio", -1);
343 if (!poodle_snd_device)
346 platform_set_drvdata(poodle_snd_device, &poodle_snd_devdata);
347 poodle_snd_devdata.dev = &poodle_snd_device->dev;
348 ret = platform_device_add(poodle_snd_device);
351 platform_device_put(poodle_snd_device);
356 static void __exit poodle_exit(void)
358 platform_device_unregister(poodle_snd_device);
361 module_init(poodle_init);
362 module_exit(poodle_exit);
364 /* Module information */
365 MODULE_AUTHOR("Richard Purdie");
366 MODULE_DESCRIPTION("ALSA SoC Poodle");
367 MODULE_LICENSE("GPL");