1 files changed, 266 insertions, 0 deletions

diff --git a/drivers/media/radio/radio-rtrack2.c b/drivers/media/radio/radio-rtrack2.c
new file mode 100644
index 000000000000..c00245d4d249
--- /dev/null
+++ b/drivers/media/radio/radio-rtrack2.c
@@ -0,0 +1,266 @@
+/* RadioTrack II driver for Linux radio support (C) 1998 Ben Pfaff
+ * 
+ * Based on RadioTrack I/RadioReveal (C) 1997 M. Kirkwood
+ * Converted to new API by Alan Cox <Alan.Cox@linux.org>
+ * Various bugfixes and enhancements by Russell Kroll <rkroll@exploits.org>
+ *
+ * TODO: Allow for more than one of these foolish entities :-)
+ *
+ */
+
+#include <linux/module.h>       /* Modules                      */
+#include <linux/init.h>         /* Initdata                     */
+#include <linux/ioport.h>       /* check_region, request_region */
+#include <linux/delay.h>        /* udelay                       */
+#include <asm/io.h>             /* outb, outb_p                 */
+#include <asm/uaccess.h>        /* copy to/from user            */
+#include <linux/videodev.h>     /* kernel radio structs         */
+#include <linux/config.h>       /* CONFIG_RADIO_RTRACK2_PORT    */
+#include <linux/spinlock.h>
+
+#ifndef CONFIG_RADIO_RTRACK2_PORT
+#define CONFIG_RADIO_RTRACK2_PORT -1
+#endif
+
+static int io = CONFIG_RADIO_RTRACK2_PORT; 
+static int radio_nr = -1;
+static spinlock_t lock;
+
+struct rt_device
+{
+        int port;
+        unsigned long curfreq;
+        int muted;
+};
+
+
+/* local things */
+
+static void rt_mute(struct rt_device *dev)
+{
+        if(dev->muted)
+                return;
+        spin_lock(&lock);
+        outb(1, io);
+        spin_unlock(&lock);
+        dev->muted = 1;
+}
+
+static void rt_unmute(struct rt_device *dev)
+{
+        if(dev->muted == 0)
+                return;
+        spin_lock(&lock);
+        outb(0, io);
+        spin_unlock(&lock);
+        dev->muted = 0;
+}
+
+static void zero(void)
+{
+        outb_p(1, io);
+        outb_p(3, io);
+        outb_p(1, io);
+}
+
+static void one(void)
+{
+        outb_p(5, io);
+        outb_p(7, io);
+        outb_p(5, io);
+}
+
+static int rt_setfreq(struct rt_device *dev, unsigned long freq)
+{
+        int i;
+
+        freq = freq / 200 + 856;
+        
+        spin_lock(&lock);
+
+        outb_p(0xc8, io);
+        outb_p(0xc9, io);
+        outb_p(0xc9, io);
+
+        for (i = 0; i < 10; i++)
+                zero ();
+
+        for (i = 14; i >= 0; i--)
+                if (freq & (1 << i))
+                        one ();
+                else
+                        zero ();
+
+        outb_p(0xc8, io);
+        if (!dev->muted)
+                outb_p(0, io);
+                
+        spin_unlock(&lock);
+        return 0;
+}
+
+static int rt_getsigstr(struct rt_device *dev)
+{
+        if (inb(io) & 2)        /* bit set = no signal present  */
+                return 0;
+        return 1;               /* signal present               */
+}
+
+static int rt_do_ioctl(struct inode *inode, struct file *file,
+                       unsigned int cmd, void *arg)
+{
+        struct video_device *dev = video_devdata(file);
+        struct rt_device *rt=dev->priv;
+
+        switch(cmd)
+        {
+                case VIDIOCGCAP:
+                {
+                        struct video_capability *v = arg;
+                        memset(v,0,sizeof(*v));
+                        v->type=VID_TYPE_TUNER;
+                        v->channels=1;
+                        v->audios=1;
+                        strcpy(v->name, "RadioTrack II");
+                        return 0;
+                }
+                case VIDIOCGTUNER:
+                {
+                        struct video_tuner *v = arg;
+                        if(v->tuner)    /* Only 1 tuner */ 
+                                return -EINVAL;
+                        v->rangelow=88*16000;
+                        v->rangehigh=108*16000;
+                        v->flags=VIDEO_TUNER_LOW;
+                        v->mode=VIDEO_MODE_AUTO;
+                        v->signal=0xFFFF*rt_getsigstr(rt);
+                        strcpy(v->name, "FM");
+                        return 0;
+                }
+                case VIDIOCSTUNER:
+                {
+                        struct video_tuner *v = arg;
+                        if(v->tuner!=0)
+                                return -EINVAL;
+                        /* Only 1 tuner so no setting needed ! */
+                        return 0;
+                }
+                case VIDIOCGFREQ:
+                {
+                        unsigned long *freq = arg;
+                        *freq = rt->curfreq;
+                        return 0;
+                }
+                case VIDIOCSFREQ:
+                {
+                        unsigned long *freq = arg;
+                        rt->curfreq = *freq;
+                        rt_setfreq(rt, rt->curfreq);
+                        return 0;
+                }
+                case VIDIOCGAUDIO:
+                {       
+                        struct video_audio *v = arg;
+                        memset(v,0, sizeof(*v));
+                        v->flags|=VIDEO_AUDIO_MUTABLE;
+                        v->volume=1;
+                        v->step=65535;
+                        strcpy(v->name, "Radio");
+                        return 0;                       
+                }
+                case VIDIOCSAUDIO:
+                {
+                        struct video_audio *v = arg;
+                        if(v->audio) 
+                                return -EINVAL;
+
+                        if(v->flags&VIDEO_AUDIO_MUTE) 
+                                rt_mute(rt);
+                        else
+                                rt_unmute(rt);
+
+                        return 0;
+                }
+                default:
+                        return -ENOIOCTLCMD;
+        }
+}
+
+static int rt_ioctl(struct inode *inode, struct file *file,
+                    unsigned int cmd, unsigned long arg)
+{
+        return video_usercopy(inode, file, cmd, arg, rt_do_ioctl);
+}
+
+static struct rt_device rtrack2_unit;
+
+static struct file_operations rtrack2_fops = {
+        .owner          = THIS_MODULE,
+        .open           = video_exclusive_open,
+        .release        = video_exclusive_release,
+        .ioctl          = rt_ioctl,
+        .llseek         = no_llseek,
+};
+
+static struct video_device rtrack2_radio=
+{
+        .owner          = THIS_MODULE,
+        .name           = "RadioTrack II radio",
+        .type           = VID_TYPE_TUNER,
+        .hardware       = VID_HARDWARE_RTRACK2,
+        .fops           = &rtrack2_fops,
+};
+
+static int __init rtrack2_init(void)
+{
+        if(io==-1)
+        {
+                printk(KERN_ERR "You must set an I/O address with io=0x20c or io=0x30c\n");
+                return -EINVAL;
+        }
+        if (!request_region(io, 4, "rtrack2")) 
+        {
+                printk(KERN_ERR "rtrack2: port 0x%x already in use\n", io);
+                return -EBUSY;
+        }
+
+        rtrack2_radio.priv=&rtrack2_unit;
+
+        spin_lock_init(&lock);  
+        if(video_register_device(&rtrack2_radio, VFL_TYPE_RADIO, radio_nr)==-1)
+        {
+                release_region(io, 4);
+                return -EINVAL;
+        }
+                
+        printk(KERN_INFO "AIMSlab Radiotrack II card driver.\n");
+
+        /* mute card - prevents noisy bootups */
+        outb(1, io);
+        rtrack2_unit.muted = 1;
+
+        return 0;
+}
+
+MODULE_AUTHOR("Ben Pfaff");
+MODULE_DESCRIPTION("A driver for the RadioTrack II radio card.");
+MODULE_LICENSE("GPL");
+
+module_param(io, int, 0);
+MODULE_PARM_DESC(io, "I/O address of the RadioTrack card (0x20c or 0x30c)");
+module_param(radio_nr, int, 0);
+
+static void __exit rtrack2_cleanup_module(void)
+{
+        video_unregister_device(&rtrack2_radio);
+        release_region(io,4);
+}
+
+module_init(rtrack2_init);
+module_exit(rtrack2_cleanup_module);
+
+/*
+  Local variables:
+  compile-command: "mmake"
+  End:
+*/