Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / sound / soc / blackfin / bf5xx-ad1836.c

diff --git a/kernel/sound/soc/blackfin/bf5xx-ad1836.c b/kernel/sound/soc/blackfin/bf5xx-ad1836.c
new file mode 100644 (file)
index 0000000..5bf1501
--- /dev/null
+++ b/kernel/sound/soc/blackfin/bf5xx-ad1836.c
@@ -0,0 +1,118 @@
+/*
+ * File:         sound/soc/blackfin/bf5xx-ad1836.c
+ * Author:       Barry Song <Barry.Song@analog.com>
+ *
+ * Created:      Aug 4 2009
+ * Description:  Board driver for ad1836 sound chip
+ *
+ * Bugs:         Enter bugs at http://blackfin.uclinux.org/
+ *
+ * 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.
+ *
+ */
+
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/device.h>
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/soc.h>
+#include <sound/pcm_params.h>
+
+#include <asm/blackfin.h>
+#include <asm/cacheflush.h>
+#include <asm/irq.h>
+#include <asm/dma.h>
+#include <asm/portmux.h>
+
+#include "../codecs/ad1836.h"
+
+static struct snd_soc_card bf5xx_ad1836;
+
+static int bf5xx_ad1836_init(struct snd_soc_pcm_runtime *rtd)
+{
+       struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
+       unsigned int channel_map[] = {0, 4, 1, 5, 2, 6, 3, 7};
+       int ret = 0;
+
+       /* set cpu DAI channel mapping */
+       ret = snd_soc_dai_set_channel_map(cpu_dai, ARRAY_SIZE(channel_map),
+               channel_map, ARRAY_SIZE(channel_map), channel_map);
+       if (ret < 0)
+               return ret;
+
+       ret = snd_soc_dai_set_tdm_slot(cpu_dai, 0xFF, 0xFF, 8, 32);
+       if (ret < 0)
+               return ret;
+
+       return 0;
+}
+
+#define BF5XX_AD1836_DAIFMT (SND_SOC_DAIFMT_DSP_A | SND_SOC_DAIFMT_IB_IF | \
+                               SND_SOC_DAIFMT_CBM_CFM)
+
+static struct snd_soc_dai_link bf5xx_ad1836_dai = {
+       .name = "ad1836",
+       .stream_name = "AD1836",
+       .codec_dai_name = "ad1836-hifi",
+       .platform_name = "bfin-i2s-pcm-audio",
+       .dai_fmt = BF5XX_AD1836_DAIFMT,
+       .init = bf5xx_ad1836_init,
+};
+
+static struct snd_soc_card bf5xx_ad1836 = {
+       .name = "bfin-ad1836",
+       .owner = THIS_MODULE,
+       .dai_link = &bf5xx_ad1836_dai,
+       .num_links = 1,
+};
+
+static int bf5xx_ad1836_driver_probe(struct platform_device *pdev)
+{
+       struct snd_soc_card *card = &bf5xx_ad1836;
+       const char **link_name;
+       int ret;
+
+       link_name = pdev->dev.platform_data;
+       if (!link_name) {
+               dev_err(&pdev->dev, "No platform data supplied\n");
+               return -EINVAL;
+       }
+       bf5xx_ad1836_dai.cpu_dai_name = link_name[0];
+       bf5xx_ad1836_dai.codec_name = link_name[1];
+
+       card->dev = &pdev->dev;
+       platform_set_drvdata(pdev, card);
+
+       ret = snd_soc_register_card(card);
+       if (ret)
+               dev_err(&pdev->dev, "Failed to register card\n");
+       return ret;
+}
+
+static int bf5xx_ad1836_driver_remove(struct platform_device *pdev)
+{
+       struct snd_soc_card *card = platform_get_drvdata(pdev);
+
+       snd_soc_unregister_card(card);
+       return 0;
+}
+
+static struct platform_driver bf5xx_ad1836_driver = {
+       .driver = {
+               .name = "bfin-snd-ad1836",
+               .pm = &snd_soc_pm_ops,
+       },
+       .probe = bf5xx_ad1836_driver_probe,
+       .remove = bf5xx_ad1836_driver_remove,
+};
+module_platform_driver(bf5xx_ad1836_driver);
+
+/* Module information */
+MODULE_AUTHOR("Barry Song");
+MODULE_DESCRIPTION("ALSA SoC AD1836 board driver");
+MODULE_LICENSE("GPL");
+