ASoC: add generic simple-card support
Current ASoC requires card.c file to each platforms in order to
specifies its CPU and Codecs pair.
But the differences between these were only value/strings of setting.
In order to reduce duplicate driver, this patch adds generic/simple-card.
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
diff --git a/sound/soc/generic/simple-card.c b/sound/soc/generic/simple-card.c
new file mode 100644
index 0000000..b4b4cab
--- /dev/null
+++ b/sound/soc/generic/simple-card.c
@@ -0,0 +1,114 @@
+/*
+ * ASoC simple sound card support
+ *
+ * Copyright (C) 2012 Renesas Solutions Corp.
+ * Kuninori Morimoto <kuninori.morimoto.gx@renesas.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/platform_device.h>
+#include <linux/module.h>
+#include <sound/simple_card.h>
+
+#define asoc_simple_get_card_info(p) \
+ container_of(p->dai_link, struct asoc_simple_card_info, snd_link)
+
+static int asoc_simple_card_dai_init(struct snd_soc_pcm_runtime *rtd)
+{
+ struct asoc_simple_card_info *cinfo = asoc_simple_get_card_info(rtd);
+ struct asoc_simple_dai_init_info *iinfo = cinfo->init;
+ struct snd_soc_dai *codec = rtd->codec_dai;
+ struct snd_soc_dai *cpu = rtd->cpu_dai;
+ unsigned int cpu_daifmt = iinfo->fmt | iinfo->cpu_daifmt;
+ unsigned int codec_daifmt = iinfo->fmt | iinfo->codec_daifmt;
+ int ret;
+
+ if (codec_daifmt) {
+ ret = snd_soc_dai_set_fmt(codec, codec_daifmt);
+ if (ret < 0)
+ return ret;
+ }
+
+ if (iinfo->sysclk) {
+ ret = snd_soc_dai_set_sysclk(codec, 0, iinfo->sysclk, 0);
+ if (ret < 0)
+ return ret;
+ }
+
+ if (cpu_daifmt) {
+ ret = snd_soc_dai_set_fmt(cpu, cpu_daifmt);
+ if (ret < 0)
+ return ret;
+ }
+
+ return 0;
+}
+
+static int asoc_simple_card_probe(struct platform_device *pdev)
+{
+ struct asoc_simple_card_info *cinfo = pdev->dev.platform_data;
+
+ if (!cinfo) {
+ dev_err(&pdev->dev, "no info for asoc-simple-card\n");
+ return -EINVAL;
+ }
+
+ if (!cinfo->name ||
+ !cinfo->card ||
+ !cinfo->cpu_dai ||
+ !cinfo->codec ||
+ !cinfo->platform ||
+ !cinfo->codec_dai) {
+ dev_err(&pdev->dev, "insufficient asoc_simple_card_info settings\n");
+ return -EINVAL;
+ }
+
+ /*
+ * init snd_soc_dai_link
+ */
+ cinfo->snd_link.name = cinfo->name;
+ cinfo->snd_link.stream_name = cinfo->name;
+ cinfo->snd_link.cpu_dai_name = cinfo->cpu_dai;
+ cinfo->snd_link.platform_name = cinfo->platform;
+ cinfo->snd_link.codec_name = cinfo->codec;
+ cinfo->snd_link.codec_dai_name = cinfo->codec_dai;
+
+ /* enable snd_link.init if cinfo has settings */
+ if (cinfo->init)
+ cinfo->snd_link.init = asoc_simple_card_dai_init;
+
+ /*
+ * init snd_soc_card
+ */
+ cinfo->snd_card.name = cinfo->card;
+ cinfo->snd_card.owner = THIS_MODULE;
+ cinfo->snd_card.dai_link = &cinfo->snd_link;
+ cinfo->snd_card.num_links = 1;
+ cinfo->snd_card.dev = &pdev->dev;
+
+ return snd_soc_register_card(&cinfo->snd_card);
+}
+
+static int asoc_simple_card_remove(struct platform_device *pdev)
+{
+ struct asoc_simple_card_info *cinfo = pdev->dev.platform_data;
+
+ return snd_soc_unregister_card(&cinfo->snd_card);
+}
+
+static struct platform_driver asoc_simple_card = {
+ .driver = {
+ .name = "asoc-simple-card",
+ },
+ .probe = asoc_simple_card_probe,
+ .remove = asoc_simple_card_remove,
+};
+
+module_platform_driver(asoc_simple_card);
+
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("ASoC Simple Sound Card");
+MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>");