[backfire] targets: rename "files-2.6.x" directories to "files"

[10.03/openwrt.git] / target / linux / xburst / files / sound / soc / jz4740 / n526.c

diff --git a/target/linux/xburst/files/sound/soc/jz4740/n526.c b/target/linux/xburst/files/sound/soc/jz4740/n526.c
new file mode 100644 (file)
index 0000000..2283904
--- /dev/null
+++ b/target/linux/xburst/files/sound/soc/jz4740/n526.c
@@ -0,0 +1,169 @@
+/*
+ * Copyright (C) 2009, Lars-Peter Clausen <lars@metafoo.de>
+ *
+ * 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.
+ *
+ *  You should have received a copy of the  GNU General Public License along
+ *  with this program; if not, write  to the Free Software Foundation, Inc.,
+ *  675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ */
+
+#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 <linux/gpio.h>
+
+#include "../codecs/jzcodec.h"
+#include "jz4740-pcm.h"
+#include "jz4740-i2s.h"
+
+#define N526_AMP_EN_GPIO JZ_GPIO_PORTD(4)
+
+static int n526_spk_event(struct snd_soc_dapm_widget *widget,
+                            struct snd_kcontrol *ctrl, int event)
+{
+       gpio_set_value(N526_AMP_EN_GPIO, !SND_SOC_DAPM_EVENT_OFF(event));
+       return 0;
+}
+
+static const struct snd_soc_dapm_widget n526_widgets[] = {
+       SND_SOC_DAPM_SPK("Speaker", n526_spk_event),
+       SND_SOC_DAPM_HP("Headphone", NULL),
+       SND_SOC_DAPM_MIC("Mic", NULL),
+};
+
+static const struct snd_soc_dapm_route n526_routes[] = {
+       {"Mic", NULL, "MIC"},
+       {"Speaker", NULL, "LOUT"},
+       {"Speaker", NULL, "ROUT"},
+       {"Headphone", NULL, "LOUT"},
+       {"Headphone", NULL, "ROUT"},
+};
+
+static const struct snd_kcontrol_new n526_controls[] = {
+       SOC_DAPM_PIN_SWITCH("Speaker"),
+};
+
+#define N526_DAIFMT (SND_SOC_DAIFMT_I2S | \
+                       SND_SOC_DAIFMT_NB_NF | \
+                       SND_SOC_DAIFMT_CBM_CFM)
+
+static int n526_codec_init(struct snd_soc_codec *codec)
+{
+       int ret;
+       struct snd_soc_dai *cpu_dai = codec->socdev->card->dai_link->cpu_dai;
+       struct snd_soc_dai *codec_dai = codec->socdev->card->dai_link->codec_dai;
+
+       snd_soc_dapm_nc_pin(codec, "LIN");
+       snd_soc_dapm_nc_pin(codec, "RIN");
+
+       ret = snd_soc_dai_set_fmt(codec_dai, N526_DAIFMT);
+       if (ret < 0) {
+               dev_err(codec->dev, "Failed to set codec dai format: %d\n", ret);
+               return ret;
+       }
+
+       ret = snd_soc_dai_set_fmt(cpu_dai, N526_DAIFMT);
+       if (ret < 0) {
+               dev_err(codec->dev, "Failed to set cpu dai format: %d\n", ret);
+               return ret;
+       }
+
+       ret = snd_soc_dai_set_sysclk(codec_dai, JZCODEC_SYSCLK, 111,
+               SND_SOC_CLOCK_IN);
+       if (ret < 0) {
+               dev_err(codec->dev, "Failed to set codec dai sysclk: %d\n", ret);
+               return ret;
+       }
+
+       snd_soc_dapm_new_controls(codec, n526_widgets, ARRAY_SIZE(n526_widgets));
+
+       snd_soc_add_controls(codec, n526_controls,
+                               ARRAY_SIZE(n526_controls));
+
+       snd_soc_dapm_add_routes(codec, n526_routes, ARRAY_SIZE(n526_routes));
+
+       snd_soc_dapm_sync(codec);
+
+       return 0;
+}
+
+static struct snd_soc_dai_link n526_dai = {
+       .name = "jz-codec",
+       .stream_name = "JZCODEC",
+       .cpu_dai = &jz4740_i2s_dai,
+       .codec_dai = &jz_codec_dai,
+       .init = n526_codec_init,
+};
+
+static struct snd_soc_card n526 = {
+       .name = "N526",
+       .dai_link = &n526_dai,
+       .num_links = 1,
+       .platform = &jz4740_soc_platform,
+};
+
+static struct snd_soc_device n526_snd_devdata = {
+       .card = &n526,
+       .codec_dev = &soc_codec_dev_jzcodec,
+};
+
+static struct platform_device *n526_snd_device;
+
+static int __init n526_init(void)
+{
+       int ret;
+
+       n526_snd_device = platform_device_alloc("soc-audio", -1);
+
+       if (!n526_snd_device)
+               return -ENOMEM;
+
+       ret = gpio_request(N526_AMP_EN_GPIO, "AMP");
+       if (ret) {
+               pr_err("n526 snd: Failed to request AMP GPIO(%d): %d\n",
+                               N526_AMP_EN_GPIO, ret);
+               goto err_device_put;
+       }
+
+       gpio_direction_output(JZ_GPIO_PORTD(4), 0);
+
+       platform_set_drvdata(n526_snd_device, &n526_snd_devdata);
+       n526_snd_devdata.dev = &n526_snd_device->dev;
+       ret = platform_device_add(n526_snd_device);
+       if (ret) {
+               pr_err("n526 snd: Failed to add snd soc device: %d\n", ret);
+               goto err_unset_pdata;
+       }
+
+        return 0;
+
+err_unset_pdata:
+       platform_set_drvdata(n526_snd_device, NULL);
+       gpio_free(N526_AMP_EN_GPIO);
+err_device_put:
+       platform_device_put(n526_snd_device);
+
+       return ret;
+}
+module_init(n526_init);
+
+static void __exit n526_exit(void)
+{
+       gpio_free(N526_AMP_EN_GPIO);
+       platform_device_unregister(n526_snd_device);
+}
+module_exit(n526_exit);
+
+MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>");
+MODULE_DESCRIPTION("ALSA SoC N526 audio support");
+MODULE_LICENSE("GPL v2");