[PATCH] OMAP: c55x dummy code as dspfs plugin

["Komal Shah" <komal_shah802003@yahoo.com>]

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After applying the patch, please update arch/arm/mach-omap2/Makefile
to make it compile.

Signed-off-by: Komal Shah <komal_shah802003@yahoo.com>

---Komal Shah
http://komalshah.blogspot.com

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diff --git a/arch/arm/mach-omap2/dsp.c b/arch/arm/mach-omap2/dsp.c
new file mode 100644
index 0000000..ffba320
--- /dev/null
+++ b/arch/arm/mach-omap2/dsp.c
@@ -0,0 +1,87 @@
+/*
+ * arch/arm/mach-omap2/dsp.c
+ *
+ * Support DSP (C55x) for OMAP2420 using dspfs.
+ *
+ * Author: Komal Shah (komal_shah802003@yahoo.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/init.h>
+#include <linux/module.h>
+#include <linux/err.h>
+#include <linux/dspfs.h>
+#include <linux/mm.h>
+#include <linux/kernel.h>
+#include <linux/fs.h>
+
+struct dentry *dentry;
+
+static int omap_dsp_init(void* arg)
+{
+	printk(KERN_NOTICE "DSP: Initializing\n");
+
+	return 0;
+}
+
+static void omap_dsp_exit(void* arg)
+{
+	printk(KERN_NOTICE "DSP: Exiting\n");
+}
+
+static ssize_t omap_dsp_dir_write(struct file *file, const char __user *buf,
+				 size_t count, loff_t *ppos)
+{
+	return generic_file_write(file, buf, count, ppos);
+}
+
+static struct file_operations omap_dsp_codecs_dir_fops = {
+	.open		= dcache_dir_open,
+	.release	= dcache_dir_close,
+	.llseek		= dcache_dir_lseek,
+	.read		= generic_read_dir,
+	.write		= omap_dsp_dir_write,
+	.readdir	= dcache_readdir,
+};
+
+static struct file_operations omap_dsp_percodec_fops = {
+	.read  = generic_file_read,
+	.write = generic_file_write,
+};
+
+static struct tree_descr omap_dsp_percodec_files[] = {
+	{"frmdata_0", &omap_dsp_percodec_fops, S_IWUSR | S_IRUGO},
+	{"frmdata_1", &omap_dsp_percodec_fops, S_IWUSR | S_IRUGO},
+	{"" },
+};
+
+static struct dsp_info omap_dsp = {
+	.name	= "c55x",
+	.parent = NULL,
+	.init	= omap_dsp_init,
+	.exit	= omap_dsp_exit,
+	.fops	= &omap_dsp_codecs_dir_fops,
+	.percodec_files = omap_dsp_percodec_files,
+};
+
+static int __init omap_dsp_fs_init(void)
+{
+	dentry = dsp_register(&omap_dsp);
+
+	if (IS_ERR(dentry))
+		return PTR_ERR(dentry);
+
+	return 0;
+}
+
+static void __exit omap_dsp_fs_exit(void)
+{
+	dsp_unregister(dentry);
+}
+
+module_init(omap_dsp_fs_init);
+module_exit(omap_dsp_fs_exit);
+
+MODULE_LICENSE("GPL");

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