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Diffstat (limited to 'sound/soc/s6000/s6105-ipcam.c')
-rw-r--r--sound/soc/s6000/s6105-ipcam.c244
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 0000000..b5f95f9
--- /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");
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