1 files changed, 244 insertions, 0 deletions

diff --git a/sound/soc/s6000/s6105-ipcam.c b/sound/soc/s6000/s6105-ipcam.c
new file mode 100644
index 000000000000..b5f95f9781c1
--- /dev/null
+++ b/sound/soc/s6000/s6105-ipcam.c
@@ -0,0 +1,244 @@
+/*
+ * ASoC driver for Stretch s6105 IP camera platform
+ *
+ * Author:      Daniel Gloeckner, <dg@emlix.com>
+ * Copyright:   (C) 2009 emlix GmbH <info@emlix.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/timer.h>
+#include <linux/interrupt.h>
+#include <linux/platform_device.h>
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/soc.h>
+#include <sound/soc-dapm.h>
+
+#include <variant/dmac.h>
+
+#include "../codecs/tlv320aic3x.h"
+#include "s6000-pcm.h"
+#include "s6000-i2s.h"
+
+#define S6105_CAM_CODEC_CLOCK 12288000
+
+static int s6105_hw_params(struct snd_pcm_substream *substream,
+                           struct snd_pcm_hw_params *params)
+{
+        struct snd_soc_pcm_runtime *rtd = substream->private_data;
+        struct snd_soc_dai *codec_dai = rtd->dai->codec_dai;
+        struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
+        int ret = 0;
+
+        /* set codec DAI configuration */
+        ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S |
+                                             SND_SOC_DAIFMT_CBM_CFM);
+        if (ret < 0)
+                return ret;
+
+        /* set cpu DAI configuration */
+        ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_CBM_CFM |
+                                           SND_SOC_DAIFMT_NB_NF);
+        if (ret < 0)
+                return ret;
+
+        /* set the codec system clock */
+        ret = snd_soc_dai_set_sysclk(codec_dai, 0, S6105_CAM_CODEC_CLOCK,
+                                            SND_SOC_CLOCK_OUT);
+        if (ret < 0)
+                return ret;
+
+        return 0;
+}
+
+static struct snd_soc_ops s6105_ops = {
+        .hw_params = s6105_hw_params,
+};
+
+/* s6105 machine dapm widgets */
+static const struct snd_soc_dapm_widget aic3x_dapm_widgets[] = {
+        SND_SOC_DAPM_LINE("Audio Out Differential", NULL),
+        SND_SOC_DAPM_LINE("Audio Out Stereo", NULL),
+        SND_SOC_DAPM_LINE("Audio In", NULL),
+};
+
+/* s6105 machine audio_mapnections to the codec pins */
+static const struct snd_soc_dapm_route audio_map[] = {
+        /* Audio Out connected to HPLOUT, HPLCOM, HPROUT */
+        {"Audio Out Differential", NULL, "HPLOUT"},
+        {"Audio Out Differential", NULL, "HPLCOM"},
+        {"Audio Out Stereo", NULL, "HPLOUT"},
+        {"Audio Out Stereo", NULL, "HPROUT"},
+
+        /* Audio In connected to LINE1L, LINE1R */
+        {"LINE1L", NULL, "Audio In"},
+        {"LINE1R", NULL, "Audio In"},
+};
+
+static int output_type_info(struct snd_kcontrol *kcontrol,
+                            struct snd_ctl_elem_info *uinfo)
+{
+        uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
+        uinfo->count = 1;
+        uinfo->value.enumerated.items = 2;
+        if (uinfo->value.enumerated.item) {
+                uinfo->value.enumerated.item = 1;
+                strcpy(uinfo->value.enumerated.name, "HPLOUT/HPROUT");
+        } else {
+                strcpy(uinfo->value.enumerated.name, "HPLOUT/HPLCOM");
+        }
+        return 0;
+}
+
+static int output_type_get(struct snd_kcontrol *kcontrol,
+                           struct snd_ctl_elem_value *ucontrol)
+{
+        ucontrol->value.enumerated.item[0] = kcontrol->private_value;
+        return 0;
+}
+
+static int output_type_put(struct snd_kcontrol *kcontrol,
+                           struct snd_ctl_elem_value *ucontrol)
+{
+        struct snd_soc_codec *codec = kcontrol->private_data;
+        unsigned int val = (ucontrol->value.enumerated.item[0] != 0);
+        char *differential = "Audio Out Differential";
+        char *stereo = "Audio Out Stereo";
+
+        if (kcontrol->private_value == val)
+                return 0;
+        kcontrol->private_value = val;
+        snd_soc_dapm_disable_pin(codec, val ? differential : stereo);
+        snd_soc_dapm_sync(codec);
+        snd_soc_dapm_enable_pin(codec, val ? stereo : differential);
+        snd_soc_dapm_sync(codec);
+
+        return 1;
+}
+
+static const struct snd_kcontrol_new audio_out_mux = {
+        .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
+        .name = "Master Output Mux",
+        .index = 0,
+        .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
+        .info = output_type_info,
+        .get = output_type_get,
+        .put = output_type_put,
+        .private_value = 1 /* default to stereo */
+};
+
+/* Logic for a aic3x as connected on the s6105 ip camera ref design */
+static int s6105_aic3x_init(struct snd_soc_codec *codec)
+{
+        /* Add s6105 specific widgets */
+        snd_soc_dapm_new_controls(codec, aic3x_dapm_widgets,
+                                  ARRAY_SIZE(aic3x_dapm_widgets));
+
+        /* Set up s6105 specific audio path audio_map */
+        snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));
+
+        /* not present */
+        snd_soc_dapm_nc_pin(codec, "MONO_LOUT");
+        snd_soc_dapm_nc_pin(codec, "LINE2L");
+        snd_soc_dapm_nc_pin(codec, "LINE2R");
+
+        /* not connected */
+        snd_soc_dapm_nc_pin(codec, "MIC3L"); /* LINE2L on this chip */
+        snd_soc_dapm_nc_pin(codec, "MIC3R"); /* LINE2R on this chip */
+        snd_soc_dapm_nc_pin(codec, "LLOUT");
+        snd_soc_dapm_nc_pin(codec, "RLOUT");
+        snd_soc_dapm_nc_pin(codec, "HPRCOM");
+
+        /* always connected */
+        snd_soc_dapm_enable_pin(codec, "Audio In");
+
+        /* must correspond to audio_out_mux.private_value initializer */
+        snd_soc_dapm_disable_pin(codec, "Audio Out Differential");
+        snd_soc_dapm_sync(codec);
+        snd_soc_dapm_enable_pin(codec, "Audio Out Stereo");
+
+        snd_soc_dapm_sync(codec);
+
+        snd_ctl_add(codec->card, snd_ctl_new1(&audio_out_mux, codec));
+
+        return 0;
+}
+
+/* s6105 digital audio interface glue - connects codec <--> CPU */
+static struct snd_soc_dai_link s6105_dai = {
+        .name = "TLV320AIC31",
+        .stream_name = "AIC31",
+        .cpu_dai = &s6000_i2s_dai,
+        .codec_dai = &aic3x_dai,
+        .init = s6105_aic3x_init,
+        .ops = &s6105_ops,
+};
+
+/* s6105 audio machine driver */
+static struct snd_soc_card snd_soc_card_s6105 = {
+        .name = "Stretch IP Camera",
+        .platform = &s6000_soc_platform,
+        .dai_link = &s6105_dai,
+        .num_links = 1,
+};
+
+/* s6105 audio private data */
+static struct aic3x_setup_data s6105_aic3x_setup = {
+        .i2c_bus = 0,
+        .i2c_address = 0x18,
+};
+
+/* s6105 audio subsystem */
+static struct snd_soc_device s6105_snd_devdata = {
+        .card = &snd_soc_card_s6105,
+        .codec_dev = &soc_codec_dev_aic3x,
+        .codec_data = &s6105_aic3x_setup,
+};
+
+static struct s6000_snd_platform_data __initdata s6105_snd_data = {
+        .wide           = 0,
+        .channel_in     = 0,
+        .channel_out    = 1,
+        .lines_in       = 1,
+        .lines_out      = 1,
+        .same_rate      = 1,
+};
+
+static struct platform_device *s6105_snd_device;
+
+static int __init s6105_init(void)
+{
+        int ret;
+
+        s6105_snd_device = platform_device_alloc("soc-audio", -1);
+        if (!s6105_snd_device)
+                return -ENOMEM;
+
+        platform_set_drvdata(s6105_snd_device, &s6105_snd_devdata);
+        s6105_snd_devdata.dev = &s6105_snd_device->dev;
+        platform_device_add_data(s6105_snd_device, &s6105_snd_data,
+                                 sizeof(s6105_snd_data));
+
+        ret = platform_device_add(s6105_snd_device);
+        if (ret)
+                platform_device_put(s6105_snd_device);
+
+        return ret;
+}
+
+static void __exit s6105_exit(void)
+{
+        platform_device_unregister(s6105_snd_device);
+}
+
+module_init(s6105_init);
+module_exit(s6105_exit);
+
+MODULE_AUTHOR("Daniel Gloeckner");
+MODULE_DESCRIPTION("Stretch s6105 IP camera ASoC driver");
+MODULE_LICENSE("GPL");