--- /dev/null
+/*
+ * corgi.c -- SoC audio for Corgi
+ *
+ * Copyright 2005 Wolfson Microelectronics PLC.
+ * Copyright 2005 Openedhand Ltd.
+ *
+ * Authors: Liam Girdwood <liam.girdwood@wolfsonmicro.com>
+ * Richard Purdie <richard@openedhand.com>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ *
+ * Revision history
+ * 30th Nov 2005 Initial version.
+ *
+ */
+
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/timer.h>
+#include <linux/interrupt.h>
+#include <linux/platform_device.h>
+#include <sound/driver.h>
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/soc.h>
+#include <sound/soc-dapm.h>
+
+#include <asm/mach-types.h>
+#include <asm/hardware/scoop.h>
+#include <asm/arch/pxa-regs.h>
+#include <asm/arch/hardware.h>
+#include <asm/arch/corgi.h>
+#include <asm/arch/audio.h>
+
+#include "../codecs/wm8731.h"
+#include "pxa2xx-pcm.h"
+
+#define CORGI_HP 0
+#define CORGI_MIC 1
+#define CORGI_LINE 2
+#define CORGI_HEADSET 3
+#define CORGI_HP_OFF 4
+#define CORGI_SPK_ON 0
+#define CORGI_SPK_OFF 1
+
+ /* audio clock in Hz - rounded from 12.235MHz */
+#define CORGI_AUDIO_CLOCK 12288000
+
+static int corgi_jack_func;
+static int corgi_spk_func;
+
+static void corgi_ext_control(struct snd_soc_codec *codec)
+{
+ int spk = 0, mic = 0, line = 0, hp = 0, hs = 0;
+
+ /* set up jack connection */
+ switch (corgi_jack_func) {
+ case CORGI_HP:
+ hp = 1;
+ /* set = unmute headphone */
+ set_scoop_gpio(&corgiscoop_device.dev, CORGI_SCP_MUTE_L);
+ set_scoop_gpio(&corgiscoop_device.dev, CORGI_SCP_MUTE_R);
+ break;
+ case CORGI_MIC:
+ mic = 1;
+ /* reset = mute headphone */
+ reset_scoop_gpio(&corgiscoop_device.dev, CORGI_SCP_MUTE_L);
+ reset_scoop_gpio(&corgiscoop_device.dev, CORGI_SCP_MUTE_R);
+ break;
+ case CORGI_LINE:
+ line = 1;
+ reset_scoop_gpio(&corgiscoop_device.dev, CORGI_SCP_MUTE_L);
+ reset_scoop_gpio(&corgiscoop_device.dev, CORGI_SCP_MUTE_R);
+ break;
+ case CORGI_HEADSET:
+ hs = 1;
+ mic = 1;
+ reset_scoop_gpio(&corgiscoop_device.dev, CORGI_SCP_MUTE_L);
+ set_scoop_gpio(&corgiscoop_device.dev, CORGI_SCP_MUTE_R);
+ break;
+ }
+
+ if (corgi_spk_func == CORGI_SPK_ON)
+ spk = 1;
+
+ /* set the enpoints to their new connetion states */
+ snd_soc_dapm_set_endpoint(codec, "Ext Spk", spk);
+ snd_soc_dapm_set_endpoint(codec, "Mic Jack", mic);
+ snd_soc_dapm_set_endpoint(codec, "Line Jack", line);
+ snd_soc_dapm_set_endpoint(codec, "Headphone Jack", hp);
+ snd_soc_dapm_set_endpoint(codec, "Headset Jack", hs);
+
+ /* signal a DAPM event */
+ snd_soc_dapm_sync_endpoints(codec);
+}
+
+static int corgi_startup(struct snd_pcm_substream *substream)
+{
+ struct snd_soc_pcm_runtime *rtd = substream->private_data;
+ struct snd_soc_codec *codec = rtd->socdev->codec;
+
+ /* check the jack status at stream startup */
+ corgi_ext_control(codec);
+ return 0;
+}
+
+/* we need to unmute the HP at shutdown as the mute burns power on corgi */
+static int corgi_shutdown(struct snd_pcm_substream *substream)
+{
+ struct snd_soc_pcm_runtime *rtd = substream->private_data;
+ struct snd_soc_codec *codec = rtd->socdev->codec;
+
+ /* set = unmute headphone */
+ set_scoop_gpio(&corgiscoop_device.dev, CORGI_SCP_MUTE_L);
+ set_scoop_gpio(&corgiscoop_device.dev, CORGI_SCP_MUTE_R);
+ return 0;
+}
+
+static struct snd_soc_ops corgi_ops = {
+ .startup = corgi_startup,
+ .shutdown = corgi_shutdown,
+};
+
+static int corgi_get_jack(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ ucontrol->value.integer.value[0] = corgi_jack_func;
+ return 0;
+}
+
+static int corgi_set_jack(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
+
+ if (corgi_jack_func == ucontrol->value.integer.value[0])
+ return 0;
+
+ corgi_jack_func = ucontrol->value.integer.value[0];
+ corgi_ext_control(codec);
+ return 1;
+}
+
+static int corgi_get_spk(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ ucontrol->value.integer.value[0] = corgi_spk_func;
+ return 0;
+}
+
+static int corgi_set_spk(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
+
+ if (corgi_spk_func == ucontrol->value.integer.value[0])
+ return 0;
+
+ corgi_spk_func = ucontrol->value.integer.value[0];
+ corgi_ext_control(codec);
+ return 1;
+}
+
+static int corgi_amp_event(struct snd_soc_dapm_widget *w, int event)
+{
+ if (SND_SOC_DAPM_EVENT_ON(event))
+ set_scoop_gpio(&corgiscoop_device.dev, CORGI_SCP_APM_ON);
+ else
+ reset_scoop_gpio(&corgiscoop_device.dev, CORGI_SCP_APM_ON);
+
+ return 0;
+}
+
+static int corgi_mic_event(struct snd_soc_dapm_widget *w, int event)
+{
+ if (SND_SOC_DAPM_EVENT_ON(event))
+ set_scoop_gpio(&corgiscoop_device.dev, CORGI_SCP_MIC_BIAS);
+ else
+ reset_scoop_gpio(&corgiscoop_device.dev, CORGI_SCP_MIC_BIAS);
+
+ return 0;
+}
+
+/* corgi machine dapm widgets */
+static const struct snd_soc_dapm_widget wm8731_dapm_widgets[] = {
+SND_SOC_DAPM_HP("Headphone Jack", NULL),
+SND_SOC_DAPM_MIC("Mic Jack", corgi_mic_event),
+SND_SOC_DAPM_SPK("Ext Spk", corgi_amp_event),
+SND_SOC_DAPM_LINE("Line Jack", NULL),
+SND_SOC_DAPM_HP("Headset Jack", NULL),
+};
+
+/* Corgi machine audio map (connections to the codec pins) */
+static const char *audio_map[][3] = {
+
+ /* headset Jack - in = micin, out = LHPOUT*/
+ {"Headset Jack", NULL, "LHPOUT"},
+
+ /* headphone connected to LHPOUT1, RHPOUT1 */
+ {"Headphone Jack", NULL, "LHPOUT"},
+ {"Headphone Jack", NULL, "RHPOUT"},
+
+ /* speaker connected to LOUT, ROUT */
+ {"Ext Spk", NULL, "ROUT"},
+ {"Ext Spk", NULL, "LOUT"},
+
+ /* mic is connected to MICIN (via right channel of headphone jack) */
+ {"MICIN", NULL, "Mic Jack"},
+
+ /* Same as the above but no mic bias for line signals */
+ {"MICIN", NULL, "Line Jack"},
+
+ {NULL, NULL, NULL},
+};
+
+static const char *jack_function[] = {"Headphone", "Mic", "Line", "Headset",
+ "Off"};
+static const char *spk_function[] = {"On", "Off"};
+static const struct soc_enum corgi_enum[] = {
+ SOC_ENUM_SINGLE_EXT(5, jack_function),
+ SOC_ENUM_SINGLE_EXT(2, spk_function),
+};
+
+static const struct snd_kcontrol_new wm8731_corgi_controls[] = {
+ SOC_ENUM_EXT("Jack Function", corgi_enum[0], corgi_get_jack,
+ corgi_set_jack),
+ SOC_ENUM_EXT("Speaker Function", corgi_enum[1], corgi_get_spk,
+ corgi_set_spk),
+};
+
+/*
+ * Logic for a wm8731 as connected on a Sharp SL-C7x0 Device
+ */
+static int corgi_wm8731_init(struct snd_soc_codec *codec)
+{
+ int i, err;
+
+ snd_soc_dapm_set_endpoint(codec, "LLINEIN", 0);
+ snd_soc_dapm_set_endpoint(codec, "RLINEIN", 0);
+
+ /* Add corgi specific controls */
+ for (i = 0; i < ARRAY_SIZE(wm8731_corgi_controls); i++) {
+ err = snd_ctl_add(codec->card,
+ snd_soc_cnew(&wm8731_corgi_controls[i],codec, NULL));
+ if (err < 0)
+ return err;
+ }
+
+ /* Add corgi specific widgets */
+ for(i = 0; i < ARRAY_SIZE(wm8731_dapm_widgets); i++) {
+ snd_soc_dapm_new_control(codec, &wm8731_dapm_widgets[i]);
+ }
+
+ /* Set up corgi specific audio path audio_map */
+ for(i = 0; audio_map[i][0] != NULL; i++) {
+ snd_soc_dapm_connect_input(codec, audio_map[i][0],
+ audio_map[i][1], audio_map[i][2]);
+ }
+
+ snd_soc_dapm_sync_endpoints(codec);
+ return 0;
+}
+
+static unsigned int corgi_config_sysclk(struct snd_soc_pcm_runtime *rtd,
+ struct snd_soc_clock_info *info)
+{
+ if (info->bclk_master & SND_SOC_DAIFMT_CBS_CFS) {
+ /* pxa2xx is i2s master */
+ switch (info->rate) {
+ case 44100:
+ case 88200:
+ /* configure codec digital filters for 44.1, 88.2 */
+ rtd->codec_dai->config_sysclk(rtd->codec_dai, info,
+ 11289600);
+ break;
+ default:
+ /* configure codec digital filters for all other rates */
+ rtd->codec_dai->config_sysclk(rtd->codec_dai, info,
+ CORGI_AUDIO_CLOCK);
+ break;
+ }
+ /* config pxa i2s as master */
+ return rtd->cpu_dai->config_sysclk(rtd->cpu_dai, info,
+ CORGI_AUDIO_CLOCK);
+ } else {
+ /* codec is i2s master -
+ * only configure codec DAI clock and filters */
+ return rtd->codec_dai->config_sysclk(rtd->codec_dai, info,
+ CORGI_AUDIO_CLOCK);
+ }
+}
+
+/* corgi digital audio interface glue - connects codec <--> CPU */
+static struct snd_soc_dai_link corgi_dai = {
+ .name = "WM8731",
+ .stream_name = "WM8731",
+ .cpu_dai = &pxa_i2s_dai,
+ .codec_dai = &wm8731_dai,
+ .init = corgi_wm8731_init,
+ .config_sysclk = corgi_config_sysclk,
+};
+
+/* corgi audio machine driver */
+static struct snd_soc_machine snd_soc_machine_corgi = {
+ .name = "Corgi",
+ .dai_link = &corgi_dai,
+ .num_links = 1,
+ .ops = &corgi_ops,
+};
+
+/* corgi audio private data */
+static struct wm8731_setup_data corgi_wm8731_setup = {
+ .i2c_address = 0x1b,
+};
+
+/* corgi audio subsystem */
+static struct snd_soc_device corgi_snd_devdata = {
+ .machine = &snd_soc_machine_corgi,
+ .platform = &pxa2xx_soc_platform,
+ .codec_dev = &soc_codec_dev_wm8731,
+ .codec_data = &corgi_wm8731_setup,
+};
+
+static struct platform_device *corgi_snd_device;
+
+static int __init corgi_init(void)
+{
+ int ret;
+
+ if (!(machine_is_corgi() || machine_is_shepherd() || machine_is_husky()))
+ return -ENODEV;
+
+ corgi_snd_device = platform_device_alloc("soc-audio", -1);
+ if (!corgi_snd_device)
+ return -ENOMEM;
+
+ platform_set_drvdata(corgi_snd_device, &corgi_snd_devdata);
+ corgi_snd_devdata.dev = &corgi_snd_device->dev;
+ ret = platform_device_add(corgi_snd_device);
+
+ if (ret)
+ platform_device_put(corgi_snd_device);
+
+ return ret;
+}
+
+static void __exit corgi_exit(void)
+{
+ platform_device_unregister(corgi_snd_device);
+}
+
+module_init(corgi_init);
+module_exit(corgi_exit);
+
+/* Module information */
+MODULE_AUTHOR("Richard Purdie");
+MODULE_DESCRIPTION("ALSA SoC Corgi");
+MODULE_LICENSE("GPL");
projects / linux-2.6 / commitdiff