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/interrupt.h>
21 #include <linux/platform_device.h>
22 #include <sound/core.h>
23 #include <sound/pcm.h>
24 #include <sound/soc.h>
25 #include <sound/soc-dapm.h>
27 #include <asm/mach-types.h>
28 #include <asm/hardware/locomo.h>
29 #include <mach/pxa-regs.h>
30 #include <mach/hardware.h>
31 #include <mach/poodle.h>
32 #include <mach/audio.h>
34 #include "../codecs/wm8731.h"
35 #include "pxa2xx-pcm.h"
36 #include "pxa2xx-i2s.h"
39 #define POODLE_HP_OFF 0
40 #define POODLE_SPK_ON 1
41 #define POODLE_SPK_OFF 0
43 /* audio clock in Hz - rounded from 12.235MHz */
44 #define POODLE_AUDIO_CLOCK 12288000
46 static int poodle_jack_func;
47 static int poodle_spk_func;
49 static void poodle_ext_control(struct snd_soc_codec *codec)
51 /* set up jack connection */
52 if (poodle_jack_func == POODLE_HP) {
53 /* set = unmute headphone */
54 locomo_gpio_write(&poodle_locomo_device.dev,
55 POODLE_LOCOMO_GPIO_MUTE_L, 1);
56 locomo_gpio_write(&poodle_locomo_device.dev,
57 POODLE_LOCOMO_GPIO_MUTE_R, 1);
58 snd_soc_dapm_enable_pin(codec, "Headphone Jack");
60 locomo_gpio_write(&poodle_locomo_device.dev,
61 POODLE_LOCOMO_GPIO_MUTE_L, 0);
62 locomo_gpio_write(&poodle_locomo_device.dev,
63 POODLE_LOCOMO_GPIO_MUTE_R, 0);
64 snd_soc_dapm_disable_pin(codec, "Headphone Jack");
67 /* set the enpoints to their new connetion states */
68 if (poodle_spk_func == POODLE_SPK_ON)
69 snd_soc_dapm_enable_pin(codec, "Ext Spk");
71 snd_soc_dapm_disable_pin(codec, "Ext Spk");
73 /* signal a DAPM event */
74 snd_soc_dapm_sync(codec);
77 static int poodle_startup(struct snd_pcm_substream *substream)
79 struct snd_soc_pcm_runtime *rtd = substream->private_data;
80 struct snd_soc_codec *codec = rtd->socdev->codec;
82 /* check the jack status at stream startup */
83 poodle_ext_control(codec);
87 /* we need to unmute the HP at shutdown as the mute burns power on poodle */
88 static void poodle_shutdown(struct snd_pcm_substream *substream)
90 /* set = unmute headphone */
91 locomo_gpio_write(&poodle_locomo_device.dev,
92 POODLE_LOCOMO_GPIO_MUTE_L, 1);
93 locomo_gpio_write(&poodle_locomo_device.dev,
94 POODLE_LOCOMO_GPIO_MUTE_R, 1);
97 static int poodle_hw_params(struct snd_pcm_substream *substream,
98 struct snd_pcm_hw_params *params)
100 struct snd_soc_pcm_runtime *rtd = substream->private_data;
101 struct snd_soc_dai *codec_dai = rtd->dai->codec_dai;
102 struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
103 unsigned int clk = 0;
106 switch (params_rate(params)) {
120 /* set codec DAI configuration */
121 ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S |
122 SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS);
126 /* set cpu DAI configuration */
127 ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S |
128 SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS);
132 /* set the codec system clock for DAC and ADC */
133 ret = snd_soc_dai_set_sysclk(codec_dai, WM8731_SYSCLK, clk,
138 /* set the I2S system clock as input (unused) */
139 ret = snd_soc_dai_set_sysclk(cpu_dai, PXA2XX_I2S_SYSCLK, 0,
147 static struct snd_soc_ops poodle_ops = {
148 .startup = poodle_startup,
149 .hw_params = poodle_hw_params,
150 .shutdown = poodle_shutdown,
153 static int poodle_get_jack(struct snd_kcontrol *kcontrol,
154 struct snd_ctl_elem_value *ucontrol)
156 ucontrol->value.integer.value[0] = poodle_jack_func;
160 static int poodle_set_jack(struct snd_kcontrol *kcontrol,
161 struct snd_ctl_elem_value *ucontrol)
163 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
165 if (poodle_jack_func == ucontrol->value.integer.value[0])
168 poodle_jack_func = ucontrol->value.integer.value[0];
169 poodle_ext_control(codec);
173 static int poodle_get_spk(struct snd_kcontrol *kcontrol,
174 struct snd_ctl_elem_value *ucontrol)
176 ucontrol->value.integer.value[0] = poodle_spk_func;
180 static int poodle_set_spk(struct snd_kcontrol *kcontrol,
181 struct snd_ctl_elem_value *ucontrol)
183 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
185 if (poodle_spk_func == ucontrol->value.integer.value[0])
188 poodle_spk_func = ucontrol->value.integer.value[0];
189 poodle_ext_control(codec);
193 static int poodle_amp_event(struct snd_soc_dapm_widget *w,
194 struct snd_kcontrol *k, int event)
196 if (SND_SOC_DAPM_EVENT_ON(event))
197 locomo_gpio_write(&poodle_locomo_device.dev,
198 POODLE_LOCOMO_GPIO_AMP_ON, 0);
200 locomo_gpio_write(&poodle_locomo_device.dev,
201 POODLE_LOCOMO_GPIO_AMP_ON, 1);
206 /* poodle machine dapm widgets */
207 static const struct snd_soc_dapm_widget wm8731_dapm_widgets[] = {
208 SND_SOC_DAPM_HP("Headphone Jack", NULL),
209 SND_SOC_DAPM_SPK("Ext Spk", poodle_amp_event),
212 /* Corgi machine connections to the codec pins */
213 static const struct snd_soc_dapm_route audio_map[] = {
215 /* headphone connected to LHPOUT1, RHPOUT1 */
216 {"Headphone Jack", NULL, "LHPOUT"},
217 {"Headphone Jack", NULL, "RHPOUT"},
219 /* speaker connected to LOUT, ROUT */
220 {"Ext Spk", NULL, "ROUT"},
221 {"Ext Spk", NULL, "LOUT"},
224 static const char *jack_function[] = {"Off", "Headphone"};
225 static const char *spk_function[] = {"Off", "On"};
226 static const struct soc_enum poodle_enum[] = {
227 SOC_ENUM_SINGLE_EXT(2, jack_function),
228 SOC_ENUM_SINGLE_EXT(2, spk_function),
231 static const struct snd_kcontrol_new wm8731_poodle_controls[] = {
232 SOC_ENUM_EXT("Jack Function", poodle_enum[0], poodle_get_jack,
234 SOC_ENUM_EXT("Speaker Function", poodle_enum[1], poodle_get_spk,
239 * Logic for a wm8731 as connected on a Sharp SL-C7x0 Device
241 static int poodle_wm8731_init(struct snd_soc_codec *codec)
245 snd_soc_dapm_nc_pin(codec, "LLINEIN");
246 snd_soc_dapm_nc_pin(codec, "RLINEIN");
247 snd_soc_dapm_enable_pin(codec, "MICIN");
249 /* Add poodle specific controls */
250 for (i = 0; i < ARRAY_SIZE(wm8731_poodle_controls); i++) {
251 err = snd_ctl_add(codec->card,
252 snd_soc_cnew(&wm8731_poodle_controls[i], codec, NULL));
257 /* Add poodle specific widgets */
258 snd_soc_dapm_new_controls(codec, wm8731_dapm_widgets,
259 ARRAY_SIZE(wm8731_dapm_widgets));
261 /* Set up poodle specific audio path audio_map */
262 snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));
264 snd_soc_dapm_sync(codec);
268 /* poodle digital audio interface glue - connects codec <--> CPU */
269 static struct snd_soc_dai_link poodle_dai = {
271 .stream_name = "WM8731",
272 .cpu_dai = &pxa_i2s_dai,
273 .codec_dai = &wm8731_dai,
274 .init = poodle_wm8731_init,
278 /* poodle audio machine driver */
279 static struct snd_soc_card snd_soc_poodle = {
281 .platform = &pxa2xx_soc_platform,
282 .dai_link = &poodle_dai,
286 /* poodle audio private data */
287 static struct wm8731_setup_data poodle_wm8731_setup = {
292 /* poodle audio subsystem */
293 static struct snd_soc_device poodle_snd_devdata = {
294 .card = &snd_soc_poodle,
295 .codec_dev = &soc_codec_dev_wm8731,
296 .codec_data = &poodle_wm8731_setup,
299 static struct platform_device *poodle_snd_device;
301 static int __init poodle_init(void)
305 if (!machine_is_poodle())
308 locomo_gpio_set_dir(&poodle_locomo_device.dev,
309 POODLE_LOCOMO_GPIO_AMP_ON, 0);
310 /* should we mute HP at startup - burning power ?*/
311 locomo_gpio_set_dir(&poodle_locomo_device.dev,
312 POODLE_LOCOMO_GPIO_MUTE_L, 0);
313 locomo_gpio_set_dir(&poodle_locomo_device.dev,
314 POODLE_LOCOMO_GPIO_MUTE_R, 0);
316 poodle_snd_device = platform_device_alloc("soc-audio", -1);
317 if (!poodle_snd_device)
320 platform_set_drvdata(poodle_snd_device, &poodle_snd_devdata);
321 poodle_snd_devdata.dev = &poodle_snd_device->dev;
322 ret = platform_device_add(poodle_snd_device);
325 platform_device_put(poodle_snd_device);
330 static void __exit poodle_exit(void)
332 platform_device_unregister(poodle_snd_device);
335 module_init(poodle_init);
336 module_exit(poodle_exit);
338 /* Module information */
339 MODULE_AUTHOR("Richard Purdie");
340 MODULE_DESCRIPTION("ALSA SoC Poodle");
341 MODULE_LICENSE("GPL");