This patch adds Alsa audio support to the Sharp Zaurus SL-C1000/SL-C3x00
(Akita/Spitz) machines.
Signed-off-by: Richard Purdie <rpurdie@xxxxxxxxx>
Signed-off-by: Liam Girdwood <liam.girdwood@xxxxxxxxxxxxxxxx>
Index: alsa-kernel/soc/pxa/spitz.c
===================================================================
--- /dev/null
+++ alsa-kernel/soc/pxa/spitz.c
@@ -0,0 +1,361 @@
+/*
+ * spitz.c -- SoC audio for Sharp SL-Cxx00 models Spitz, Borzoi and Akita
+ *
+ * Copyright 2005 Wolfson Microelectronics PLC.
+ * Copyright 2005 Openedhand Ltd.
+ *
+ * Authors: Liam Girdwood <liam.girdwood@xxxxxxxxxxxxxxxx>
+ * Richard Purdie <richard@xxxxxxxxxxxxxx>
+ *
+ * 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/akita.h>
+#include <asm/arch/spitz.h>
+#include <asm/mach-types.h>
+#include "../codecs/wm8750.h"
+#include "pxa2xx-pcm.h"
+
+#define SPITZ_HP 0
+#define SPITZ_MIC 1
+#define SPITZ_LINE 2
+#define SPITZ_HEADSET 3
+#define SPITZ_HP_OFF 4
+#define SPITZ_SPK_ON 0
+#define SPITZ_SPK_OFF 1
+
+ /* audio clock in Hz - rounded from 12.235MHz */
+#define SPITZ_AUDIO_CLOCK 12288000
+
+static int spitz_jack_func = 0;
+static int spitz_spk_func = 0;
+
+static void spitz_ext_control(struct snd_soc_codec *codec)
+{
+ if (spitz_spk_func == SPITZ_SPK_ON)
+ snd_soc_dapm_set_endpoint(codec, "Ext Spk", 1);
+ else
+ snd_soc_dapm_set_endpoint(codec, "Ext Spk", 0);
+
+ /* set up jack connection */
+ switch (spitz_jack_func) {
+ case SPITZ_HP:
+ /* enable and unmute hp jack, disable mic bias */
+ snd_soc_dapm_set_endpoint(codec, "Headset Jack", 0);
+ snd_soc_dapm_set_endpoint(codec, "Mic Jack", 0);
+ snd_soc_dapm_set_endpoint(codec, "Line Jack", 0);
+ snd_soc_dapm_set_endpoint(codec, "Headphone Jack", 1);
+ set_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_MUTE_L);
+ set_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_MUTE_R);
+ break;
+ case SPITZ_MIC:
+ /* enable mic jack and bias, mute hp */
+ snd_soc_dapm_set_endpoint(codec, "Headphone Jack", 0);
+ snd_soc_dapm_set_endpoint(codec, "Headset Jack", 0);
+ snd_soc_dapm_set_endpoint(codec, "Line Jack", 0);
+ snd_soc_dapm_set_endpoint(codec, "Mic Jack", 1);
+ reset_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_MUTE_L);
+ reset_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_MUTE_R);
+ break;
+ case SPITZ_LINE:
+ /* enable line jack, disable mic bias and mute hp */
+ snd_soc_dapm_set_endpoint(codec, "Headphone Jack", 0);
+ snd_soc_dapm_set_endpoint(codec, "Headset Jack", 0);
+ snd_soc_dapm_set_endpoint(codec, "Mic Jack", 0);
+ snd_soc_dapm_set_endpoint(codec, "Line Jack", 1);
+ reset_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_MUTE_L);
+ reset_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_MUTE_R);
+ break;
+ case SPITZ_HEADSET:
+ /* enable and unmute headset jack enable mic bias, mute L hp */
+ snd_soc_dapm_set_endpoint(codec, "Headphone Jack", 0);
+ snd_soc_dapm_set_endpoint(codec, "Mic Jack", 1);
+ snd_soc_dapm_set_endpoint(codec, "Line Jack", 0);
+ snd_soc_dapm_set_endpoint(codec, "Headset Jack", 1);
+ reset_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_MUTE_L);
+ set_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_MUTE_R);
+ break;
+ case SPITZ_HP_OFF:
+
+ /* jack removed, everything off */
+ snd_soc_dapm_set_endpoint(codec, "Headphone Jack", 0);
+ snd_soc_dapm_set_endpoint(codec, "Headset Jack", 0);
+ snd_soc_dapm_set_endpoint(codec, "Mic Jack", 0);
+ snd_soc_dapm_set_endpoint(codec, "Line Jack", 0);
+ reset_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_MUTE_L);
+ reset_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_MUTE_R);
+ break;
+ }
+ snd_soc_dapm_sync_endpoints(codec);
+}
+
+static int spitz_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 */
+ spitz_ext_control(codec);
+ return 0;
+}
+
+static struct snd_soc_ops spitz_ops = {
+ .startup = spitz_startup,
+};
+
+static int spitz_get_jack(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ ucontrol->value.integer.value[0] = spitz_jack_func;
+ return 0;
+}
+
+static int spitz_set_jack(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
+ spitz_jack_func = ucontrol->value.integer.value[0];
+ spitz_ext_control(codec);
+ return 0;
+}
+
+static int spitz_get_spk(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ ucontrol->value.integer.value[0] = spitz_spk_func;
+ return 0;
+}
+
+static int spitz_set_spk(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
+ spitz_spk_func = ucontrol->value.integer.value[0];
+ spitz_ext_control(codec);
+ return 0;
+}
+
+static int spitz_mic_bias(struct snd_soc_dapm_widget *w, int event)
+{
+ if (machine_is_borzoi() || machine_is_spitz()) {
+ if (SND_SOC_DAPM_EVENT_ON(event))
+ set_scoop_gpio(&spitzscoop2_device.dev, SPITZ_SCP2_MIC_BIAS);
+ else
+ reset_scoop_gpio(&spitzscoop2_device.dev, SPITZ_SCP2_MIC_BIAS);
+ }
+
+ if (machine_is_akita()){
+ if (SND_SOC_DAPM_EVENT_ON(event))
+ akita_set_ioexp(&akitaioexp_device.dev, AKITA_IOEXP_MIC_BIAS);
+ else
+ akita_reset_ioexp(&akitaioexp_device.dev, AKITA_IOEXP_MIC_BIAS);
+ }
+ return 0;
+}
+
+/* spitz machine dapm widgets */
+static const struct snd_soc_dapm_widget wm8750_dapm_widgets[] = {
+ SND_SOC_DAPM_HP("Headphone Jack", NULL),
+ SND_SOC_DAPM_MIC("Mic Jack", spitz_mic_bias),
+ SND_SOC_DAPM_SPK("Ext Spk", NULL),
+ SND_SOC_DAPM_LINE("Line Jack", NULL),
+
+ /* headset is a mic and mono headphone */
+ SND_SOC_DAPM_HP("Headset Jack", NULL),
+};
+
+/* Spitz machine audio_map */
+static const char *audio_map[][3] = {
+
+ /* headphone connected to LOUT1, ROUT1 */
+ {"Headphone Jack", NULL, "LOUT1"},
+ {"Headphone Jack", NULL, "ROUT1"},
+
+ /* headset connected to ROUT1 and LINPUT1 with bias (def below) */
+ {"Headset Jack", NULL, "ROUT1"},
+
+ /* ext speaker connected to LOUT2, ROUT2 */
+ {"Ext Spk", NULL , "ROUT2"},
+ {"Ext Spk", NULL , "LOUT2"},
+
+ /* mic is connected to input 1 - with bias */
+ {"LINPUT1", NULL, "Mic Bias"},
+ {"Mic Bias", NULL, "Mic Jack"},
+
+ /* line is connected to input 1 - no bias */
+ {"LINPUT1", 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 spitz_enum[] = {
+ SOC_ENUM_SINGLE_EXT(5, jack_function),
+ SOC_ENUM_SINGLE_EXT(2, spk_function),
+};
+
+static const struct snd_kcontrol_new wm8750_spitz_controls[] = {
+ SOC_ENUM_EXT("Jack Function", spitz_enum[0], spitz_get_jack,
+ spitz_set_jack),
+ SOC_ENUM_EXT("Speaker Function", spitz_enum[1], spitz_get_spk,
+ spitz_set_spk),
+};
+
+/*
+ * Logic for a wm8750 as connected on a Sharp SL-Cxx00 Device
+ */
+static int spitz_wm8750_init(struct snd_soc_codec *codec)
+{
+ int i, err;
+
+ /* NC codec pins */
+ snd_soc_dapm_set_endpoint(codec, "RINPUT1", 0);
+ snd_soc_dapm_set_endpoint(codec, "LINPUT2", 0);
+ snd_soc_dapm_set_endpoint(codec, "RINPUT2", 0);
+ snd_soc_dapm_set_endpoint(codec, "LINPUT3", 0);
+ snd_soc_dapm_set_endpoint(codec, "RINPUT3", 0);
+ snd_soc_dapm_set_endpoint(codec, "OUT3", 0);
+ snd_soc_dapm_set_endpoint(codec, "MONO", 0);
+
+ /* Add spitz specific controls */
+ for (i = 0; i < ARRAY_SIZE(wm8750_spitz_controls); i++) {
+ err = snd_ctl_add(codec->card,
+ snd_soc_cnew(&wm8750_spitz_controls[i], codec, NULL));
+ if (err < 0)
+ return err;
+ }
+
+ /* Add spitz specific widgets */
+ for (i = 0; i < ARRAY_SIZE(wm8750_dapm_widgets); i++) {
+ snd_soc_dapm_new_control(codec, &wm8750_dapm_widgets[i]);
+ }
+
+ /* Set up spitz specific audio path audio_mapnects */
+ 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;
+}
+
+unsigned int spitz_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 11025:
+ case 22050:
+ case 44100:
+ case 88200:
+ /* configure codec digital filters
+ * for 11.025, 22.05, 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,
+ SPITZ_AUDIO_CLOCK);
+ break;
+ }
+ /* configure pxa2xx i2s interface clocks as master */
+ return rtd->cpu_dai->config_sysclk(rtd->cpu_dai, info,
+ SPITZ_AUDIO_CLOCK);
+ } else {
+ /* codec is i2s master - only configure codec DAI clock */
+ return rtd->codec_dai->config_sysclk(rtd->codec_dai, info,
+ SPITZ_AUDIO_CLOCK);
+ }
+}
+
+/* spitz digital audio interface glue - connects codec <--> CPU */
+static struct snd_soc_dai_link spitz_dai = {
+ .name = "wm8750",
+ .stream_name = "WM8750",
+ .cpu_dai = &pxa_i2s_dai,
+ .codec_dai = &wm8750_dai,
+ .init = spitz_wm8750_init,
+ .config_sysclk = spitz_config_sysclk,
+};
+
+/* spitz audio machine driver */
+static struct snd_soc_machine snd_soc_machine_spitz = {
+ .name = "Spitz",
+ .dai_link = &spitz_dai,
+ .num_links = 1,
+ .ops = &spitz_ops,
+};
+
+/* spitz audio private data */
+static struct wm8750_setup_data spitz_wm8750_setup = {
+ .i2c_address = 0x1b,
+};
+
+/* spitz audio subsystem */
+static struct snd_soc_device spitz_snd_devdata = {
+ .machine = &snd_soc_machine_spitz,
+ .platform = &pxa2xx_soc_platform,
+ .codec_dev = &soc_codec_dev_wm8750,
+ .codec_data = &spitz_wm8750_setup,
+};
+
+static struct platform_device *spitz_snd_device;
+
+static int __init spitz_init(void)
+{
+ int ret;
+
+ if (!(machine_is_spitz() || machine_is_borzoi() || machine_is_akita()))
+ return -ENODEV;
+
+ spitz_snd_device = platform_device_alloc("soc-audio", -1);
+ if (!spitz_snd_device)
+ return -ENOMEM;
+
+ platform_set_drvdata(spitz_snd_device, &spitz_snd_devdata);
+ spitz_snd_devdata.dev = &spitz_snd_device->dev;
+ ret = platform_device_add(spitz_snd_device);
+
+ if (ret)
+ platform_device_put(spitz_snd_device);
+
+ return ret;
+}
+
+static void __exit spitz_exit(void)
+{
+ platform_device_unregister(spitz_snd_device);
+}
+
+module_init(spitz_init);
+module_exit(spitz_exit);
+
+MODULE_AUTHOR("Richard Purdie");
+MODULE_DESCRIPTION("ALSA SoC Spitz");
+MODULE_LICENSE("GPL");
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