1 files changed, 133 insertions, 0 deletions

diff --git a/drivers/media/radio/miropcm20-rds.c b/drivers/media/radio/miropcm20-rds.c
new file mode 100644
index 000000000000..df79d5e0aaed
--- /dev/null
+++ b/drivers/media/radio/miropcm20-rds.c
@@ -0,0 +1,133 @@
+/* MiroSOUND PCM20 radio rds interface driver
+ * (c) 2001 Robert Siemer <Robert.Siemer@gmx.de>
+ * Thanks to Fred Seidel. See miropcm20-rds-core.c for further information.
+ */
+
+/* Revision history:
+ *
+ *   2001-04-18  Robert Siemer <Robert.Siemer@gmx.de>
+ *        separate file for user interface driver
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/fs.h>
+#include <linux/miscdevice.h>
+#include <linux/delay.h>
+#include <asm/uaccess.h>
+#include "miropcm20-rds-core.h"
+
+static char * text_buffer;
+static int rds_users = 0;
+
+
+static int rds_f_open(struct inode *in, struct file *fi)
+{
+        if (rds_users)
+                return -EBUSY;
+
+        rds_users++;
+        if ((text_buffer=kmalloc(66, GFP_KERNEL)) == 0) {
+                rds_users--;
+                printk(KERN_NOTICE "aci-rds: Out of memory by open()...\n");
+                return -ENOMEM;
+        }
+
+        return 0;
+}
+
+static int rds_f_release(struct inode *in, struct file *fi)
+{
+        kfree(text_buffer);
+
+        rds_users--;
+        return 0;
+}
+
+static void print_matrix(char *ch, char out[])
+{
+        int j;
+
+        for (j=7; j>=0; j--) {
+                 out[7-j] = ((*ch >> j) & 0x1) + '0';
+        }
+}
+
+static ssize_t rds_f_read(struct file *file, char __user *buffer, size_t length, loff_t *offset)
+{
+//      i = sprintf(text_buffer, "length: %d, offset: %d\n", length, *offset);
+
+        char c;
+        char bits[8];
+
+        msleep(2000);
+        aci_rds_cmd(RDS_STATUS, &c, 1);
+        print_matrix(&c, bits);
+        if (copy_to_user(buffer, bits, 8))
+                return -EFAULT;
+
+/*      if ((c >> 3) & 1) {
+                aci_rds_cmd(RDS_STATIONNAME, text_buffer+1, 8);
+                text_buffer[0]  = ' ' ;
+                text_buffer[9]  = '\n';
+                return copy_to_user(buffer+8, text_buffer, 10) ? -EFAULT: 18;
+        }
+*/
+/*      if ((c >> 6) & 1) {
+                aci_rds_cmd(RDS_PTYTATP, &c, 1);
+                if ( c & 1)
+                        sprintf(text_buffer, " M");
+                else
+                        sprintf(text_buffer, " S");
+                if ((c >> 1) & 1)
+                        sprintf(text_buffer+2, " TA");
+                else
+                        sprintf(text_buffer+2, " --");
+                if ((c >> 7) & 1)
+                        sprintf(text_buffer+5, " TP");
+                else
+                        sprintf(text_buffer+5, " --");
+                sprintf(text_buffer+8, " %2d\n", (c >> 2) & 0x1f);
+                return copy_to_user(buffer+8, text_buffer, 12) ? -EFAULT: 20;
+        }
+*/
+
+        if ((c >> 4) & 1) {
+                aci_rds_cmd(RDS_TEXT, text_buffer, 65);
+                text_buffer[0]  = ' ' ;
+                text_buffer[65] = '\n';
+                return copy_to_user(buffer+8, text_buffer,66) ? -EFAULT : 66+8;
+        } else {
+                put_user('\n', buffer+8);
+                return 9;
+        }
+}
+
+static struct file_operations rds_fops = {
+        .owner          = THIS_MODULE,
+        .read           = rds_f_read,
+        .open           = rds_f_open,
+        .release        = rds_f_release
+};
+
+static struct miscdevice rds_miscdev = {
+        .minor          = MISC_DYNAMIC_MINOR,
+        .name           = "radiotext",
+        .devfs_name     = "v4l/rds/radiotext",
+        .fops           = &rds_fops,
+};
+
+static int __init miropcm20_rds_init(void)
+{
+        return misc_register(&rds_miscdev);
+}
+
+static void __exit miropcm20_rds_cleanup(void)
+{
+        misc_deregister(&rds_miscdev);
+}
+
+module_init(miropcm20_rds_init);
+module_exit(miropcm20_rds_cleanup);
+MODULE_LICENSE("GPL");