[ALSA] ASoC pxa2xx Spitz machine support

This patch adds Alsa audio support to the Sharp Zaurus SL-C1000/SL-C3x00
(Akita/Spitz) machines.
From: Liam Girdwood <liam.girdwood@wolfsonmicro.com>
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>

1 files changed, 374 insertions, 0 deletions

diff --git a/sound/soc/pxa/spitz.c b/sound/soc/pxa/spitz.c
new file mode 100644
index 000000000000..17c8e61efe6f
--- /dev/null
+++ b/sound/soc/pxa/spitz.c
@@ -0,0 +1,374 @@
+/*
+ * 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@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/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;
+static int spitz_spk_func;
+
+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);
+
+        if (spitz_jack_func == ucontrol->value.integer.value[0])
+                return 0;
+
+        spitz_jack_func = ucontrol->value.integer.value[0];
+        spitz_ext_control(codec);
+        return 1;
+}
+
+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);
+
+        if (spitz_spk_func == ucontrol->value.integer.value[0])
+                return 0;
+
+        spitz_spk_func = ucontrol->value.integer.value[0];
+        spitz_ext_control(codec);
+        return 1;
+}
+
+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_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 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");