[ALSA] ASoC pxa2xx Corgi machine support
This patch adds Alsa audio support to the Sharp Zaurus SL-C7x0/C860 (Corgi) machines. From: Liam Girdwood <liam.girdwood@wolfsonmicro.com> Signed-off-by: Graeme Gregory <dp@xora.org.uk> Signed-off-by: Richard Purdie <rpurdie@rpsys.net> Signed-off-by: Liam Girdwood <liam.girdwood@wolfsonmicro.com> Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Jaroslav Kysela <perex@suse.cz>
This commit is contained in:
Liam Girdwood
Jaroslav Kysela
Родитель
75b4102766
Коммит
a1eb4b3caf
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@ -0,0 +1,361 @@
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/*
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* corgi.c -- SoC audio for Corgi
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*
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* Copyright 2005 Wolfson Microelectronics PLC.
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* Copyright 2005 Openedhand Ltd.
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*
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* Authors: Liam Girdwood <liam.girdwood@wolfsonmicro.com>
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* Richard Purdie <richard@openedhand.com>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*
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* Revision history
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* 30th Nov 2005 Initial version.
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*
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*/
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#include <linux/module.h>
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#include <linux/moduleparam.h>
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#include <linux/timer.h>
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#include <linux/interrupt.h>
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#include <linux/platform_device.h>
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#include <sound/driver.h>
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#include <sound/core.h>
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#include <sound/pcm.h>
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#include <sound/soc.h>
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#include <sound/soc-dapm.h>
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#include <asm/mach-types.h>
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#include <asm/hardware/scoop.h>
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#include <asm/arch/pxa-regs.h>
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#include <asm/arch/hardware.h>
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#include <asm/arch/corgi.h>
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#include <asm/arch/audio.h>
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#include "../codecs/wm8731.h"
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#include "pxa2xx-pcm.h"
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#define CORGI_HP 0
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#define CORGI_MIC 1
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#define CORGI_LINE 2
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#define CORGI_HEADSET 3
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#define CORGI_HP_OFF 4
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#define CORGI_SPK_ON 0
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#define CORGI_SPK_OFF 1
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/* audio clock in Hz - rounded from 12.235MHz */
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#define CORGI_AUDIO_CLOCK 12288000
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static int corgi_jack_func;
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static int corgi_spk_func;
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static void corgi_ext_control(struct snd_soc_codec *codec)
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{
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int spk = 0, mic = 0, line = 0, hp = 0, hs = 0;
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/* set up jack connection */
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switch (corgi_jack_func) {
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case CORGI_HP:
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hp = 1;
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/* set = unmute headphone */
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set_scoop_gpio(&corgiscoop_device.dev, CORGI_SCP_MUTE_L);
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set_scoop_gpio(&corgiscoop_device.dev, CORGI_SCP_MUTE_R);
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break;
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case CORGI_MIC:
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mic = 1;
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/* reset = mute headphone */
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reset_scoop_gpio(&corgiscoop_device.dev, CORGI_SCP_MUTE_L);
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reset_scoop_gpio(&corgiscoop_device.dev, CORGI_SCP_MUTE_R);
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break;
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case CORGI_LINE:
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line = 1;
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reset_scoop_gpio(&corgiscoop_device.dev, CORGI_SCP_MUTE_L);
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reset_scoop_gpio(&corgiscoop_device.dev, CORGI_SCP_MUTE_R);
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break;
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case CORGI_HEADSET:
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hs = 1;
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mic = 1;
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reset_scoop_gpio(&corgiscoop_device.dev, CORGI_SCP_MUTE_L);
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set_scoop_gpio(&corgiscoop_device.dev, CORGI_SCP_MUTE_R);
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break;
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}
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if (corgi_spk_func == CORGI_SPK_ON)
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spk = 1;
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/* set the enpoints to their new connetion states */
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snd_soc_dapm_set_endpoint(codec, "Ext Spk", spk);
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snd_soc_dapm_set_endpoint(codec, "Mic Jack", mic);
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snd_soc_dapm_set_endpoint(codec, "Line Jack", line);
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snd_soc_dapm_set_endpoint(codec, "Headphone Jack", hp);
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snd_soc_dapm_set_endpoint(codec, "Headset Jack", hs);
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/* signal a DAPM event */
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snd_soc_dapm_sync_endpoints(codec);
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}
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static int corgi_startup(struct snd_pcm_substream *substream)
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{
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struct snd_soc_pcm_runtime *rtd = substream->private_data;
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struct snd_soc_codec *codec = rtd->socdev->codec;
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/* check the jack status at stream startup */
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corgi_ext_control(codec);
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return 0;
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}
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/* we need to unmute the HP at shutdown as the mute burns power on corgi */
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static int corgi_shutdown(struct snd_pcm_substream *substream)
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{
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struct snd_soc_pcm_runtime *rtd = substream->private_data;
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struct snd_soc_codec *codec = rtd->socdev->codec;
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/* set = unmute headphone */
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set_scoop_gpio(&corgiscoop_device.dev, CORGI_SCP_MUTE_L);
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set_scoop_gpio(&corgiscoop_device.dev, CORGI_SCP_MUTE_R);
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return 0;
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}
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static struct snd_soc_ops corgi_ops = {
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.startup = corgi_startup,
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.shutdown = corgi_shutdown,
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};
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static int corgi_get_jack(struct snd_kcontrol *kcontrol,
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struct snd_ctl_elem_value *ucontrol)
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{
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ucontrol->value.integer.value[0] = corgi_jack_func;
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return 0;
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}
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static int corgi_set_jack(struct snd_kcontrol *kcontrol,
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struct snd_ctl_elem_value *ucontrol)
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{
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struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
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if (corgi_jack_func == ucontrol->value.integer.value[0])
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return 0;
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corgi_jack_func = ucontrol->value.integer.value[0];
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corgi_ext_control(codec);
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return 1;
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}
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static int corgi_get_spk(struct snd_kcontrol *kcontrol,
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struct snd_ctl_elem_value *ucontrol)
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{
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ucontrol->value.integer.value[0] = corgi_spk_func;
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return 0;
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}
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static int corgi_set_spk(struct snd_kcontrol *kcontrol,
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struct snd_ctl_elem_value *ucontrol)
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{
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struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
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if (corgi_spk_func == ucontrol->value.integer.value[0])
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return 0;
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corgi_spk_func = ucontrol->value.integer.value[0];
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corgi_ext_control(codec);
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return 1;
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}
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static int corgi_amp_event(struct snd_soc_dapm_widget *w, int event)
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{
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if (SND_SOC_DAPM_EVENT_ON(event))
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set_scoop_gpio(&corgiscoop_device.dev, CORGI_SCP_APM_ON);
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else
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reset_scoop_gpio(&corgiscoop_device.dev, CORGI_SCP_APM_ON);
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return 0;
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}
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static int corgi_mic_event(struct snd_soc_dapm_widget *w, int event)
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{
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if (SND_SOC_DAPM_EVENT_ON(event))
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set_scoop_gpio(&corgiscoop_device.dev, CORGI_SCP_MIC_BIAS);
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else
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reset_scoop_gpio(&corgiscoop_device.dev, CORGI_SCP_MIC_BIAS);
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return 0;
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}
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/* corgi machine dapm widgets */
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static const struct snd_soc_dapm_widget wm8731_dapm_widgets[] = {
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SND_SOC_DAPM_HP("Headphone Jack", NULL),
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SND_SOC_DAPM_MIC("Mic Jack", corgi_mic_event),
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SND_SOC_DAPM_SPK("Ext Spk", corgi_amp_event),
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SND_SOC_DAPM_LINE("Line Jack", NULL),
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SND_SOC_DAPM_HP("Headset Jack", NULL),
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};
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/* Corgi machine audio map (connections to the codec pins) */
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static const char *audio_map[][3] = {
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/* headset Jack - in = micin, out = LHPOUT*/
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{"Headset Jack", NULL, "LHPOUT"},
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/* headphone connected to LHPOUT1, RHPOUT1 */
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{"Headphone Jack", NULL, "LHPOUT"},
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{"Headphone Jack", NULL, "RHPOUT"},
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/* speaker connected to LOUT, ROUT */
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{"Ext Spk", NULL, "ROUT"},
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{"Ext Spk", NULL, "LOUT"},
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/* mic is connected to MICIN (via right channel of headphone jack) */
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{"MICIN", NULL, "Mic Jack"},
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/* Same as the above but no mic bias for line signals */
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{"MICIN", NULL, "Line Jack"},
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{NULL, NULL, NULL},
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};
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static const char *jack_function[] = {"Headphone", "Mic", "Line", "Headset",
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"Off"};
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static const char *spk_function[] = {"On", "Off"};
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static const struct soc_enum corgi_enum[] = {
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SOC_ENUM_SINGLE_EXT(5, jack_function),
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SOC_ENUM_SINGLE_EXT(2, spk_function),
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};
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static const struct snd_kcontrol_new wm8731_corgi_controls[] = {
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SOC_ENUM_EXT("Jack Function", corgi_enum[0], corgi_get_jack,
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corgi_set_jack),
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SOC_ENUM_EXT("Speaker Function", corgi_enum[1], corgi_get_spk,
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corgi_set_spk),
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};
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/*
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* Logic for a wm8731 as connected on a Sharp SL-C7x0 Device
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*/
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static int corgi_wm8731_init(struct snd_soc_codec *codec)
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{
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int i, err;
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snd_soc_dapm_set_endpoint(codec, "LLINEIN", 0);
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snd_soc_dapm_set_endpoint(codec, "RLINEIN", 0);
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/* Add corgi specific controls */
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for (i = 0; i < ARRAY_SIZE(wm8731_corgi_controls); i++) {
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err = snd_ctl_add(codec->card,
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snd_soc_cnew(&wm8731_corgi_controls[i],codec, NULL));
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if (err < 0)
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return err;
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}
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/* Add corgi specific widgets */
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for(i = 0; i < ARRAY_SIZE(wm8731_dapm_widgets); i++) {
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snd_soc_dapm_new_control(codec, &wm8731_dapm_widgets[i]);
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}
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/* Set up corgi specific audio path audio_map */
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for(i = 0; audio_map[i][0] != NULL; i++) {
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snd_soc_dapm_connect_input(codec, audio_map[i][0],
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audio_map[i][1], audio_map[i][2]);
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}
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snd_soc_dapm_sync_endpoints(codec);
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return 0;
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}
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static unsigned int corgi_config_sysclk(struct snd_soc_pcm_runtime *rtd,
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struct snd_soc_clock_info *info)
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{
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if (info->bclk_master & SND_SOC_DAIFMT_CBS_CFS) {
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/* pxa2xx is i2s master */
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switch (info->rate) {
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case 44100:
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case 88200:
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/* configure codec digital filters for 44.1, 88.2 */
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rtd->codec_dai->config_sysclk(rtd->codec_dai, info,
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11289600);
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break;
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default:
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/* configure codec digital filters for all other rates */
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rtd->codec_dai->config_sysclk(rtd->codec_dai, info,
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CORGI_AUDIO_CLOCK);
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break;
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}
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/* config pxa i2s as master */
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return rtd->cpu_dai->config_sysclk(rtd->cpu_dai, info,
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CORGI_AUDIO_CLOCK);
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} else {
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/* codec is i2s master -
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* only configure codec DAI clock and filters */
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return rtd->codec_dai->config_sysclk(rtd->codec_dai, info,
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CORGI_AUDIO_CLOCK);
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}
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}
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/* corgi digital audio interface glue - connects codec <--> CPU */
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static struct snd_soc_dai_link corgi_dai = {
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.name = "WM8731",
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.stream_name = "WM8731",
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.cpu_dai = &pxa_i2s_dai,
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.codec_dai = &wm8731_dai,
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.init = corgi_wm8731_init,
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.config_sysclk = corgi_config_sysclk,
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};
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/* corgi audio machine driver */
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static struct snd_soc_machine snd_soc_machine_corgi = {
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.name = "Corgi",
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.dai_link = &corgi_dai,
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.num_links = 1,
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.ops = &corgi_ops,
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};
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/* corgi audio private data */
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static struct wm8731_setup_data corgi_wm8731_setup = {
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.i2c_address = 0x1b,
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};
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/* corgi audio subsystem */
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static struct snd_soc_device corgi_snd_devdata = {
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.machine = &snd_soc_machine_corgi,
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.platform = &pxa2xx_soc_platform,
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.codec_dev = &soc_codec_dev_wm8731,
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.codec_data = &corgi_wm8731_setup,
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};
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static struct platform_device *corgi_snd_device;
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static int __init corgi_init(void)
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{
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int ret;
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if (!(machine_is_corgi() || machine_is_shepherd() || machine_is_husky()))
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return -ENODEV;
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corgi_snd_device = platform_device_alloc("soc-audio", -1);
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if (!corgi_snd_device)
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return -ENOMEM;
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platform_set_drvdata(corgi_snd_device, &corgi_snd_devdata);
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corgi_snd_devdata.dev = &corgi_snd_device->dev;
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ret = platform_device_add(corgi_snd_device);
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if (ret)
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platform_device_put(corgi_snd_device);
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||||||
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return ret;
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}
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||||||
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static void __exit corgi_exit(void)
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{
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platform_device_unregister(corgi_snd_device);
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}
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|
||||||
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module_init(corgi_init);
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module_exit(corgi_exit);
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/* Module information */
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MODULE_AUTHOR("Richard Purdie");
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MODULE_DESCRIPTION("ALSA SoC Corgi");
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MODULE_LICENSE("GPL");
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