Linux-2.6.12-rc2v2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 368 insertions, 0 deletions

diff --git a/drivers/media/radio/radio-aimslab.c b/drivers/media/radio/radio-aimslab.c
new file mode 100644
index 000000000000..8b4ad70dd1b2
--- /dev/null
+++ b/drivers/media/radio/radio-aimslab.c
@@ -0,0 +1,368 @@
+/* radiotrack (radioreveal) driver for Linux radio support
+ * (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>
+ *
+ * History:
+ * 1999-02-24   Russell Kroll <rkroll@exploits.org>
+ *              Fine tuning/VIDEO_TUNER_LOW
+ *              Frequency range expanded to start at 87 MHz
+ *
+ * TODO: Allow for more than one of these foolish entities :-)
+ *
+ * Notes on the hardware (reverse engineered from other peoples'
+ * reverse engineering of AIMS' code :-)
+ *
+ *  Frequency control is done digitally -- ie out(port,encodefreq(95.8));
+ *
+ *  The signal strength query is unsurprisingly inaccurate.  And it seems
+ *  to indicate that (on my card, at least) the frequency setting isn't
+ *  too great.  (I have to tune up .025MHz from what the freq should be
+ *  to get a report that the thing is tuned.)
+ *
+ *  Volume control is (ugh) analogue:
+ *   out(port, start_increasing_volume);
+ *   wait(a_wee_while);
+ *   out(port, stop_changing_the_volume);
+ *  
+ */
+
+#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_RTRACK_PORT     */
+#include <asm/semaphore.h>      /* Lock for the I/O             */
+
+#ifndef CONFIG_RADIO_RTRACK_PORT
+#define CONFIG_RADIO_RTRACK_PORT -1
+#endif
+
+static int io = CONFIG_RADIO_RTRACK_PORT; 
+static int radio_nr = -1;
+static struct semaphore lock;
+
+struct rt_device
+{
+        int port;
+        int curvol;
+        unsigned long curfreq;
+        int muted;
+};
+
+
+/* local things */
+
+static void sleep_delay(long n)
+{
+        /* Sleep nicely for 'n' uS */
+        int d=n/(1000000/HZ);
+        if(!d)
+                udelay(n);
+        else
+                msleep(jiffies_to_msecs(d));
+}
+
+static void rt_decvol(void)
+{
+        outb(0x58, io);         /* volume down + sigstr + on    */
+        sleep_delay(100000);
+        outb(0xd8, io);         /* volume steady + sigstr + on  */
+}
+
+static void rt_incvol(void)
+{
+        outb(0x98, io);         /* volume up + sigstr + on      */
+        sleep_delay(100000);
+        outb(0xd8, io);         /* volume steady + sigstr + on  */
+}
+
+static void rt_mute(struct rt_device *dev)
+{
+        dev->muted = 1;
+        down(&lock);
+        outb(0xd0, io);                 /* volume steady, off           */
+        up(&lock);
+}
+
+static int rt_setvol(struct rt_device *dev, int vol)
+{
+        int i;
+
+        down(&lock);
+        
+        if(vol == dev->curvol) {        /* requested volume = current */
+                if (dev->muted) {       /* user is unmuting the card  */
+                        dev->muted = 0;
+                        outb (0xd8, io);        /* enable card */
+                }       
+                up(&lock);
+                return 0;
+        }
+
+        if(vol == 0) {                  /* volume = 0 means mute the card */
+                outb(0x48, io);         /* volume down but still "on"   */
+                sleep_delay(2000000);   /* make sure it's totally down  */
+                outb(0xd0, io);         /* volume steady, off           */
+                dev->curvol = 0;        /* track the volume state!      */
+                up(&lock);
+                return 0;
+        }
+
+        dev->muted = 0;
+        if(vol > dev->curvol)
+                for(i = dev->curvol; i < vol; i++) 
+                        rt_incvol();
+        else
+                for(i = dev->curvol; i > vol; i--) 
+                        rt_decvol();
+
+        dev->curvol = vol;
+        up(&lock);
+        return 0;
+}
+
+/* the 128+64 on these outb's is to keep the volume stable while tuning 
+ * without them, the volume _will_ creep up with each frequency change
+ * and bit 4 (+16) is to keep the signal strength meter enabled
+ */
+
+static void send_0_byte(int port, struct rt_device *dev)
+{
+        if ((dev->curvol == 0) || (dev->muted)) {
+                outb_p(128+64+16+  1, port);   /* wr-enable + data low */
+                outb_p(128+64+16+2+1, port);   /* clock */
+        }
+        else {
+                outb_p(128+64+16+8+  1, port);  /* on + wr-enable + data low */
+                outb_p(128+64+16+8+2+1, port);  /* clock */
+        }
+        sleep_delay(1000); 
+}
+
+static void send_1_byte(int port, struct rt_device *dev)
+{
+        if ((dev->curvol == 0) || (dev->muted)) {
+                outb_p(128+64+16+4  +1, port);   /* wr-enable+data high */
+                outb_p(128+64+16+4+2+1, port);   /* clock */
+        } 
+        else {
+                outb_p(128+64+16+8+4  +1, port); /* on+wr-enable+data high */
+                outb_p(128+64+16+8+4+2+1, port); /* clock */
+        }
+
+        sleep_delay(1000); 
+}
+
+static int rt_setfreq(struct rt_device *dev, unsigned long freq)
+{
+        int i;
+
+        /* adapted from radio-aztech.c */
+
+        /* now uses VIDEO_TUNER_LOW for fine tuning */
+
+        freq += 171200;                 /* Add 10.7 MHz IF              */
+        freq /= 800;                    /* Convert to 50 kHz units      */
+        
+        down(&lock);                    /* Stop other ops interfering */
+         
+        send_0_byte (io, dev);          /*  0: LSB of frequency         */
+
+        for (i = 0; i < 13; i++)        /*   : frequency bits (1-13)    */
+                if (freq & (1 << i))
+                        send_1_byte (io, dev);
+                else
+                        send_0_byte (io, dev);
+
+        send_0_byte (io, dev);          /* 14: test bit - always 0    */
+        send_0_byte (io, dev);          /* 15: test bit - always 0    */
+
+        send_0_byte (io, dev);          /* 16: band data 0 - always 0 */
+        send_0_byte (io, dev);          /* 17: band data 1 - always 0 */
+        send_0_byte (io, dev);          /* 18: band data 2 - always 0 */
+        send_0_byte (io, dev);          /* 19: time base - always 0   */
+
+        send_0_byte (io, dev);          /* 20: spacing (0 = 25 kHz)   */
+        send_1_byte (io, dev);          /* 21: spacing (1 = 25 kHz)   */
+        send_0_byte (io, dev);          /* 22: spacing (0 = 25 kHz)   */
+        send_1_byte (io, dev);          /* 23: AM/FM (FM = 1, always) */
+
+        if ((dev->curvol == 0) || (dev->muted))
+                outb (0xd0, io);        /* volume steady + sigstr */
+        else
+                outb (0xd8, io);        /* volume steady + sigstr + on */
+                
+        up(&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");
+                        return 0;
+                }
+                case VIDIOCGTUNER:
+                {
+                        struct video_tuner *v = arg;
+                        if(v->tuner)    /* Only 1 tuner */ 
+                                return -EINVAL;
+                        v->rangelow=(87*16000);
+                        v->rangehigh=(108*16000);
+                        v->flags=VIDEO_TUNER_LOW;
+                        v->mode=VIDEO_MODE_AUTO;
+                        strcpy(v->name, "FM");
+                        v->signal=0xFFFF*rt_getsigstr(rt);
+                        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|VIDEO_AUDIO_VOLUME;
+                        v->volume=rt->curvol * 6554;
+                        v->step=6554;
+                        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_setvol(rt,v->volume/6554);
+                        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 rtrack_unit;
+
+static struct file_operations rtrack_fops = {
+        .owner          = THIS_MODULE,
+        .open           = video_exclusive_open,
+        .release        = video_exclusive_release,
+        .ioctl          = rt_ioctl,
+        .llseek         = no_llseek,
+};
+
+static struct video_device rtrack_radio=
+{
+        .owner          = THIS_MODULE,
+        .name           = "RadioTrack radio",
+        .type           = VID_TYPE_TUNER,
+        .hardware       = VID_HARDWARE_RTRACK,
+        .fops           = &rtrack_fops,
+};
+
+static int __init rtrack_init(void)
+{
+        if(io==-1)
+        {
+                printk(KERN_ERR "You must set an I/O address with io=0x???\n");
+                return -EINVAL;
+        }
+
+        if (!request_region(io, 2, "rtrack")) 
+        {
+                printk(KERN_ERR "rtrack: port 0x%x already in use\n", io);
+                return -EBUSY;
+        }
+
+        rtrack_radio.priv=&rtrack_unit;
+        
+        if(video_register_device(&rtrack_radio, VFL_TYPE_RADIO, radio_nr)==-1)
+        {
+                release_region(io, 2);
+                return -EINVAL;
+        }
+        printk(KERN_INFO "AIMSlab RadioTrack/RadioReveal card driver.\n");
+
+        /* Set up the I/O locking */
+        
+        init_MUTEX(&lock);
+        
+        /* mute card - prevents noisy bootups */
+
+        /* this ensures that the volume is all the way down  */
+        outb(0x48, io);         /* volume down but still "on"   */
+        sleep_delay(2000000);   /* make sure it's totally down  */
+        outb(0xc0, io);         /* steady volume, mute card     */
+        rtrack_unit.curvol = 0;
+
+        return 0;
+}
+
+MODULE_AUTHOR("M.Kirkwood");
+MODULE_DESCRIPTION("A driver for the RadioTrack/RadioReveal radio card.");
+MODULE_LICENSE("GPL");
+
+module_param(io, int, 0);
+MODULE_PARM_DESC(io, "I/O address of the RadioTrack card (0x20f or 0x30f)");
+module_param(radio_nr, int, 0);
+
+static void __exit cleanup_rtrack_module(void)
+{
+        video_unregister_device(&rtrack_radio);
+        release_region(io,2);
+}
+
+module_init(rtrack_init);
+module_exit(cleanup_rtrack_module);
+