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/pxa-regs.h>
31 #include <mach/hardware.h>
32 #include <mach/poodle.h>
33 #include <mach/audio.h>
35 #include "../codecs/wm8731.h"
36 #include "pxa2xx-pcm.h"
37 #include "pxa2xx-i2s.h"
40 #define POODLE_HP_OFF 0
41 #define POODLE_SPK_ON 1
42 #define POODLE_SPK_OFF 0
44 /* audio clock in Hz - rounded from 12.235MHz */
45 #define POODLE_AUDIO_CLOCK 12288000
47 static int poodle_jack_func;
48 static int poodle_spk_func;
50 static void poodle_ext_control(struct snd_soc_codec *codec)
52 /* set up jack connection */
53 if (poodle_jack_func == POODLE_HP) {
54 /* set = unmute headphone */
55 locomo_gpio_write(&poodle_locomo_device.dev,
56 POODLE_LOCOMO_GPIO_MUTE_L, 1);
57 locomo_gpio_write(&poodle_locomo_device.dev,
58 POODLE_LOCOMO_GPIO_MUTE_R, 1);
59 snd_soc_dapm_enable_pin(codec, "Headphone Jack");
61 locomo_gpio_write(&poodle_locomo_device.dev,
62 POODLE_LOCOMO_GPIO_MUTE_L, 0);
63 locomo_gpio_write(&poodle_locomo_device.dev,
64 POODLE_LOCOMO_GPIO_MUTE_R, 0);
65 snd_soc_dapm_disable_pin(codec, "Headphone Jack");
68 /* set the enpoints to their new connetion states */
69 if (poodle_spk_func == POODLE_SPK_ON)
70 snd_soc_dapm_enable_pin(codec, "Ext Spk");
72 snd_soc_dapm_disable_pin(codec, "Ext Spk");
74 /* signal a DAPM event */
75 snd_soc_dapm_sync(codec);
78 static int poodle_startup(struct snd_pcm_substream *substream)
80 struct snd_soc_pcm_runtime *rtd = substream->private_data;
81 struct snd_soc_codec *codec = rtd->socdev->card->codec;
83 /* check the jack status at stream startup */
84 poodle_ext_control(codec);
88 /* we need to unmute the HP at shutdown as the mute burns power on poodle */
89 static void poodle_shutdown(struct snd_pcm_substream *substream)
91 /* set = unmute headphone */
92 locomo_gpio_write(&poodle_locomo_device.dev,
93 POODLE_LOCOMO_GPIO_MUTE_L, 1);
94 locomo_gpio_write(&poodle_locomo_device.dev,
95 POODLE_LOCOMO_GPIO_MUTE_R, 1);
98 static int poodle_hw_params(struct snd_pcm_substream *substream,
99 struct snd_pcm_hw_params *params)
101 struct snd_soc_pcm_runtime *rtd = substream->private_data;
102 struct snd_soc_dai *codec_dai = rtd->dai->codec_dai;
103 struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
104 unsigned int clk = 0;
107 switch (params_rate(params)) {
121 /* set codec DAI configuration */
122 ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S |
123 SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS);
127 /* set cpu DAI configuration */
128 ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S |
129 SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS);
133 /* set the codec system clock for DAC and ADC */
134 ret = snd_soc_dai_set_sysclk(codec_dai, WM8731_SYSCLK, clk,
139 /* set the I2S system clock as input (unused) */
140 ret = snd_soc_dai_set_sysclk(cpu_dai, PXA2XX_I2S_SYSCLK, 0,
148 static struct snd_soc_ops poodle_ops = {
149 .startup = poodle_startup,
150 .hw_params = poodle_hw_params,
151 .shutdown = poodle_shutdown,
154 static int poodle_get_jack(struct snd_kcontrol *kcontrol,
155 struct snd_ctl_elem_value *ucontrol)
157 ucontrol->value.integer.value[0] = poodle_jack_func;
161 static int poodle_set_jack(struct snd_kcontrol *kcontrol,
162 struct snd_ctl_elem_value *ucontrol)
164 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
166 if (poodle_jack_func == ucontrol->value.integer.value[0])
169 poodle_jack_func = ucontrol->value.integer.value[0];
170 poodle_ext_control(codec);
174 static int poodle_get_spk(struct snd_kcontrol *kcontrol,
175 struct snd_ctl_elem_value *ucontrol)
177 ucontrol->value.integer.value[0] = poodle_spk_func;
181 static int poodle_set_spk(struct snd_kcontrol *kcontrol,
182 struct snd_ctl_elem_value *ucontrol)
184 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
186 if (poodle_spk_func == ucontrol->value.integer.value[0])
189 poodle_spk_func = ucontrol->value.integer.value[0];
190 poodle_ext_control(codec);
194 static int poodle_amp_event(struct snd_soc_dapm_widget *w,
195 struct snd_kcontrol *k, int event)
197 if (SND_SOC_DAPM_EVENT_ON(event))
198 locomo_gpio_write(&poodle_locomo_device.dev,
199 POODLE_LOCOMO_GPIO_AMP_ON, 0);
201 locomo_gpio_write(&poodle_locomo_device.dev,
202 POODLE_LOCOMO_GPIO_AMP_ON, 1);
207 /* poodle machine dapm widgets */
208 static const struct snd_soc_dapm_widget wm8731_dapm_widgets[] = {
209 SND_SOC_DAPM_HP("Headphone Jack", NULL),
210 SND_SOC_DAPM_SPK("Ext Spk", poodle_amp_event),
213 /* Corgi machine connections to the codec pins */
214 static const struct snd_soc_dapm_route audio_map[] = {
216 /* headphone connected to LHPOUT1, RHPOUT1 */
217 {"Headphone Jack", NULL, "LHPOUT"},
218 {"Headphone Jack", NULL, "RHPOUT"},
220 /* speaker connected to LOUT, ROUT */
221 {"Ext Spk", NULL, "ROUT"},
222 {"Ext Spk", NULL, "LOUT"},
225 static const char *jack_function[] = {"Off", "Headphone"};
226 static const char *spk_function[] = {"Off", "On"};
227 static const struct soc_enum poodle_enum[] = {
228 SOC_ENUM_SINGLE_EXT(2, jack_function),
229 SOC_ENUM_SINGLE_EXT(2, spk_function),
232 static const struct snd_kcontrol_new wm8731_poodle_controls[] = {
233 SOC_ENUM_EXT("Jack Function", poodle_enum[0], poodle_get_jack,
235 SOC_ENUM_EXT("Speaker Function", poodle_enum[1], poodle_get_spk,
240 * Logic for a wm8731 as connected on a Sharp SL-C7x0 Device
242 static int poodle_wm8731_init(struct snd_soc_codec *codec)
246 snd_soc_dapm_nc_pin(codec, "LLINEIN");
247 snd_soc_dapm_nc_pin(codec, "RLINEIN");
248 snd_soc_dapm_enable_pin(codec, "MICIN");
250 /* Add poodle specific controls */
251 err = snd_soc_add_controls(codec, wm8731_poodle_controls,
252 ARRAY_SIZE(wm8731_poodle_controls));
256 /* Add poodle specific widgets */
257 snd_soc_dapm_new_controls(codec, wm8731_dapm_widgets,
258 ARRAY_SIZE(wm8731_dapm_widgets));
260 /* Set up poodle specific audio path audio_map */
261 snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));
263 snd_soc_dapm_sync(codec);
267 /* poodle digital audio interface glue - connects codec <--> CPU */
268 static struct snd_soc_dai_link poodle_dai = {
270 .stream_name = "WM8731",
271 .cpu_dai = &pxa_i2s_dai,
272 .codec_dai = &wm8731_dai,
273 .init = poodle_wm8731_init,
277 /* poodle audio machine driver */
278 static struct snd_soc_card snd_soc_poodle = {
280 .platform = &pxa2xx_soc_platform,
281 .dai_link = &poodle_dai,
286 * FIXME: This is a temporary bodge to avoid cross-tree merge issues.
287 * New drivers should register the wm8731 I2C device in the machine
288 * setup code (under arch/arm for ARM systems).
290 static int wm8731_i2c_register(void)
292 struct i2c_board_info info;
293 struct i2c_adapter *adapter;
294 struct i2c_client *client;
296 memset(&info, 0, sizeof(struct i2c_board_info));
298 strlcpy(info.type, "wm8731", I2C_NAME_SIZE);
300 adapter = i2c_get_adapter(0);
302 printk(KERN_ERR "can't get i2c adapter 0\n");
306 client = i2c_new_device(adapter, &info);
307 i2c_put_adapter(adapter);
309 printk(KERN_ERR "can't add i2c device at 0x%x\n",
310 (unsigned int)info.addr);
317 /* poodle audio subsystem */
318 static struct snd_soc_device poodle_snd_devdata = {
319 .card = &snd_soc_poodle,
320 .codec_dev = &soc_codec_dev_wm8731,
323 static struct platform_device *poodle_snd_device;
325 static int __init poodle_init(void)
329 if (!machine_is_poodle())
332 ret = wm8731_i2c_register();
336 locomo_gpio_set_dir(&poodle_locomo_device.dev,
337 POODLE_LOCOMO_GPIO_AMP_ON, 0);
338 /* should we mute HP at startup - burning power ?*/
339 locomo_gpio_set_dir(&poodle_locomo_device.dev,
340 POODLE_LOCOMO_GPIO_MUTE_L, 0);
341 locomo_gpio_set_dir(&poodle_locomo_device.dev,
342 POODLE_LOCOMO_GPIO_MUTE_R, 0);
344 poodle_snd_device = platform_device_alloc("soc-audio", -1);
345 if (!poodle_snd_device)
348 platform_set_drvdata(poodle_snd_device, &poodle_snd_devdata);
349 poodle_snd_devdata.dev = &poodle_snd_device->dev;
350 ret = platform_device_add(poodle_snd_device);
353 platform_device_put(poodle_snd_device);
358 static void __exit poodle_exit(void)
360 platform_device_unregister(poodle_snd_device);
363 module_init(poodle_init);
364 module_exit(poodle_exit);
366 /* Module information */
367 MODULE_AUTHOR("Richard Purdie");
368 MODULE_DESCRIPTION("ALSA SoC Poodle");
369 MODULE_LICENSE("GPL");