2 * poodle.c -- SoC audio for Poodle
4 * Copyright 2005 Wolfson Microelectronics PLC.
5 * Copyright 2005 Openedhand Ltd.
7 * Authors: Liam Girdwood <liam.girdwood@wolfsonmicro.com>
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 <asm/arch/pxa-regs.h>
30 #include <asm/arch/hardware.h>
31 #include <asm/arch/poodle.h>
32 #include <asm/arch/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 int poodle_shutdown(struct snd_pcm_substream *substream)
90 struct snd_soc_pcm_runtime *rtd = substream->private_data;
91 struct snd_soc_codec *codec = rtd->socdev->codec;
93 /* set = unmute headphone */
94 locomo_gpio_write(&poodle_locomo_device.dev,
95 POODLE_LOCOMO_GPIO_MUTE_L, 1);
96 locomo_gpio_write(&poodle_locomo_device.dev,
97 POODLE_LOCOMO_GPIO_MUTE_R, 1);
101 static int poodle_hw_params(struct snd_pcm_substream *substream,
102 struct snd_pcm_hw_params *params)
104 struct snd_soc_pcm_runtime *rtd = substream->private_data;
105 struct snd_soc_dai *codec_dai = rtd->dai->codec_dai;
106 struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
107 unsigned int clk = 0;
110 switch (params_rate(params)) {
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);
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);
136 /* set the codec system clock for DAC and ADC */
137 ret = snd_soc_dai_set_sysclk(codec_dai, WM8731_SYSCLK, clk,
142 /* set the I2S system clock as input (unused) */
143 ret = snd_soc_dai_set_sysclk(cpu_dai, PXA2XX_I2S_SYSCLK, 0,
151 static struct snd_soc_ops poodle_ops = {
152 .startup = poodle_startup,
153 .hw_params = poodle_hw_params,
154 .shutdown = poodle_shutdown,
157 static int poodle_get_jack(struct snd_kcontrol *kcontrol,
158 struct snd_ctl_elem_value *ucontrol)
160 ucontrol->value.integer.value[0] = poodle_jack_func;
164 static int poodle_set_jack(struct snd_kcontrol *kcontrol,
165 struct snd_ctl_elem_value *ucontrol)
167 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
169 if (poodle_jack_func == ucontrol->value.integer.value[0])
172 poodle_jack_func = ucontrol->value.integer.value[0];
173 poodle_ext_control(codec);
177 static int poodle_get_spk(struct snd_kcontrol *kcontrol,
178 struct snd_ctl_elem_value *ucontrol)
180 ucontrol->value.integer.value[0] = poodle_spk_func;
184 static int poodle_set_spk(struct snd_kcontrol *kcontrol,
185 struct snd_ctl_elem_value *ucontrol)
187 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
189 if (poodle_spk_func == ucontrol->value.integer.value[0])
192 poodle_spk_func = ucontrol->value.integer.value[0];
193 poodle_ext_control(codec);
197 static int poodle_amp_event(struct snd_soc_dapm_widget *w,
198 struct snd_kcontrol *k, int event)
200 if (SND_SOC_DAPM_EVENT_ON(event))
201 locomo_gpio_write(&poodle_locomo_device.dev,
202 POODLE_LOCOMO_GPIO_AMP_ON, 0);
204 locomo_gpio_write(&poodle_locomo_device.dev,
205 POODLE_LOCOMO_GPIO_AMP_ON, 1);
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),
216 /* Corgi machine connections to the codec pins */
217 static const struct snd_soc_dapm_route audio_map[] = {
219 /* headphone connected to LHPOUT1, RHPOUT1 */
220 {"Headphone Jack", NULL, "LHPOUT"},
221 {"Headphone Jack", NULL, "RHPOUT"},
223 /* speaker connected to LOUT, ROUT */
224 {"Ext Spk", NULL, "ROUT"},
225 {"Ext Spk", NULL, "LOUT"},
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),
235 static const snd_kcontrol_new_t wm8731_poodle_controls[] = {
236 SOC_ENUM_EXT("Jack Function", poodle_enum[0], poodle_get_jack,
238 SOC_ENUM_EXT("Speaker Function", poodle_enum[1], poodle_get_spk,
243 * Logic for a wm8731 as connected on a Sharp SL-C7x0 Device
245 static int poodle_wm8731_init(struct snd_soc_codec *codec)
249 snd_soc_dapm_disable_pin(codec, "LLINEIN");
250 snd_soc_dapm_disable_pin(codec, "RLINEIN");
251 snd_soc_dapm_enable_pin(codec, "MICIN");
253 /* Add poodle specific controls */
254 for (i = 0; i < ARRAY_SIZE(wm8731_poodle_controls); i++) {
255 err = snd_ctl_add(codec->card,
256 snd_soc_cnew(&wm8731_poodle_controls[i], codec, NULL));
261 /* Add poodle specific widgets */
262 snd_soc_dapm_new_controls(codec, wm8731_dapm_widgets,
263 ARRAY_SIZE(wm8731_dapm_widgets));
265 /* Set up poodle specific audio path audio_map */
266 snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));
268 snd_soc_dapm_sync(codec);
272 /* poodle digital audio interface glue - connects codec <--> CPU */
273 static struct snd_soc_dai_link poodle_dai = {
275 .stream_name = "WM8731",
276 .cpu_dai = &pxa_i2s_dai,
277 .codec_dai = &wm8731_dai,
278 .init = poodle_wm8731_init,
282 /* poodle audio machine driver */
283 static struct snd_soc_machine snd_soc_machine_poodle = {
285 .dai_link = &poodle_dai,
289 /* poodle audio private data */
290 static struct wm8731_setup_data poodle_wm8731_setup = {
294 /* poodle audio subsystem */
295 static struct snd_soc_device poodle_snd_devdata = {
296 .machine = &snd_soc_machine_poodle,
297 .platform = &pxa2xx_soc_platform,
298 .codec_dev = &soc_codec_dev_wm8731,
299 .codec_data = &poodle_wm8731_setup,
302 static struct platform_device *poodle_snd_device;
304 static int __init poodle_init(void)
308 if (!machine_is_poodle())
311 locomo_gpio_set_dir(&poodle_locomo_device.dev,
312 POODLE_LOCOMO_GPIO_AMP_ON, 0);
313 /* should we mute HP at startup - burning power ?*/
314 locomo_gpio_set_dir(&poodle_locomo_device.dev,
315 POODLE_LOCOMO_GPIO_MUTE_L, 0);
316 locomo_gpio_set_dir(&poodle_locomo_device.dev,
317 POODLE_LOCOMO_GPIO_MUTE_R, 0);
319 poodle_snd_device = platform_device_alloc("soc-audio", -1);
320 if (!poodle_snd_device)
323 platform_set_drvdata(poodle_snd_device, &poodle_snd_devdata);
324 poodle_snd_devdata.dev = &poodle_snd_device->dev;
325 ret = platform_device_add(poodle_snd_device);
328 platform_device_put(poodle_snd_device);
333 static void __exit poodle_exit(void)
335 platform_device_unregister(poodle_snd_device);
338 module_init(poodle_init);
339 module_exit(poodle_exit);
341 /* Module information */
342 MODULE_AUTHOR("Richard Purdie");
343 MODULE_DESCRIPTION("ALSA SoC Poodle");
344 MODULE_LICENSE("GPL");