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, 341 insertions, 0 deletions

diff --git a/drivers/media/radio/radio-terratec.c b/drivers/media/radio/radio-terratec.c
new file mode 100644
index 000000000000..248d67fde037
--- /dev/null
+++ b/drivers/media/radio/radio-terratec.c
@@ -0,0 +1,341 @@
+/* Terratec ActiveRadio ISA Standalone card driver for Linux radio support
+ * (c) 1999 R. Offermanns (rolf@offermanns.de)
+ * based on the aimslab radio driver from M. Kirkwood
+ * many thanks to Michael Becker and Friedhelm Birth (from TerraTec)
+ * 
+ *
+ * History:
+ * 1999-05-21   First preview release
+ * 
+ *  Notes on the hardware:
+ *  There are two "main" chips on the card:
+ *  - Philips OM5610 (http://www-us.semiconductors.philips.com/acrobat/datasheets/OM5610_2.pdf)
+ *  - Philips SAA6588 (http://www-us.semiconductors.philips.com/acrobat/datasheets/SAA6588_1.pdf)
+ *  (you can get the datasheet at the above links)
+ *
+ *  Frequency control is done digitally -- ie out(port,encodefreq(95.8));
+ *  Volume Control is done digitally
+ *
+ *  there is a I2C controlled RDS decoder (SAA6588)  onboard, which i would like to support someday
+ *  (as soon i have understand how to get started :)
+ *  If you can help me out with that, please contact me!!
+ *
+ *  
+ */
+
+#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_TERRATEC_PORT   */
+#include <linux/spinlock.h>
+
+#ifndef CONFIG_RADIO_TERRATEC_PORT
+#define CONFIG_RADIO_TERRATEC_PORT 0x590
+#endif
+
+/**************** this ones are for the terratec *******************/
+#define BASEPORT        0x590
+#define VOLPORT         0x591
+#define WRT_DIS         0x00
+#define CLK_OFF         0x00
+#define IIC_DATA        0x01
+#define IIC_CLK         0x02
+#define DATA            0x04
+#define CLK_ON          0x08
+#define WRT_EN          0x10
+/*******************************************************************/
+
+static int io = CONFIG_RADIO_TERRATEC_PORT; 
+static int radio_nr = -1;
+static spinlock_t lock;
+
+struct tt_device
+{
+        int port;
+        int curvol;
+        unsigned long curfreq;
+        int muted;
+};
+
+
+/* local things */
+
+static void cardWriteVol(int volume)
+{
+        int i;
+        volume = volume+(volume * 32); // change both channels
+        spin_lock(&lock);
+        for (i=0;i<8;i++)
+        {
+                if (volume & (0x80>>i))
+                        outb(0x80, VOLPORT);
+                else outb(0x00, VOLPORT);
+        }
+        spin_unlock(&lock);
+}
+
+
+
+static void tt_mute(struct tt_device *dev)
+{
+        dev->muted = 1;
+        cardWriteVol(0);
+}
+
+static int tt_setvol(struct tt_device *dev, int vol)
+{
+        
+//      printk(KERN_ERR "setvol called, vol = %d\n", vol);
+
+        if(vol == dev->curvol) {        /* requested volume = current */
+                if (dev->muted) {       /* user is unmuting the card  */
+                        dev->muted = 0;
+                        cardWriteVol(vol);      /* enable card */
+                }       
+        
+                return 0;
+        }
+
+        if(vol == 0) {                  /* volume = 0 means mute the card */
+                cardWriteVol(0);        /* "turn off card" by setting vol to 0 */
+                dev->curvol = vol;      /* track the volume state!      */
+                return 0;
+        }
+
+        dev->muted = 0;
+        
+        cardWriteVol(vol);
+         
+        dev->curvol = vol;
+
+        return 0;
+
+}
+
+
+/* this is the worst part in this driver */
+/* many more or less strange things are going on here, but hey, it works :) */
+
+static int tt_setfreq(struct tt_device *dev, unsigned long freq1)
+{       
+        int freq;
+        int i;
+        int p;
+        int  temp;
+        long rest;
+     
+        unsigned char buffer[25];               /* we have to bit shift 25 registers */
+        freq = freq1/160;                       /* convert the freq. to a nice to handle value */
+        for(i=24;i>-1;i--)
+                buffer[i]=0;
+
+        rest = freq*10+10700;           /* i once had understood what is going on here */
+                                        /* maybe some wise guy (friedhelm?) can comment this stuff */
+        i=13;
+        p=10;
+        temp=102400;
+        while (rest!=0)
+        {
+                if (rest%temp  == rest)
+                        buffer[i] = 0;
+                else 
+                {
+                        buffer[i] = 1; 
+                        rest = rest-temp;
+                }
+                i--;
+                p--;
+                temp = temp/2;
+       }
+
+        spin_lock(&lock);
+        
+        for (i=24;i>-1;i--)                     /* bit shift the values to the radiocard */
+        {
+                if (buffer[i]==1) 
+                {
+                        outb(WRT_EN|DATA, BASEPORT);
+                        outb(WRT_EN|DATA|CLK_ON  , BASEPORT);
+                        outb(WRT_EN|DATA, BASEPORT);
+                }
+                else
+                {
+                        outb(WRT_EN|0x00, BASEPORT);
+                        outb(WRT_EN|0x00|CLK_ON  , BASEPORT);
+                }
+        }
+        outb(0x00, BASEPORT);     
+        
+        spin_unlock(&lock);
+  
+        return 0;
+}
+
+static int tt_getsigstr(struct tt_device *dev)          /* TODO */
+{
+        if (inb(io) & 2)        /* bit set = no signal present  */
+                return 0;
+        return 1;               /* signal present               */
+}
+
+
+/* implement the video4linux api */
+
+static int tt_do_ioctl(struct inode *inode, struct file *file,
+                       unsigned int cmd, void *arg)
+{
+        struct video_device *dev = video_devdata(file);
+        struct tt_device *tt=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, "ActiveRadio");
+                        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*tt_getsigstr(tt);
+                        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 = tt->curfreq;
+                        return 0;
+                }
+                case VIDIOCSFREQ:
+                {
+                        unsigned long *freq = arg;
+                        tt->curfreq = *freq;
+                        tt_setfreq(tt, tt->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=tt->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) 
+                                tt_mute(tt);
+                        else
+                                tt_setvol(tt,v->volume/6554);
+                        return 0;
+                }
+                default:
+                        return -ENOIOCTLCMD;
+        }
+}
+
+static int tt_ioctl(struct inode *inode, struct file *file,
+                    unsigned int cmd, unsigned long arg)
+{
+        return video_usercopy(inode, file, cmd, arg, tt_do_ioctl);
+}
+
+static struct tt_device terratec_unit;
+
+static struct file_operations terratec_fops = {
+        .owner          = THIS_MODULE,
+        .open           = video_exclusive_open,
+        .release        = video_exclusive_release,
+        .ioctl          = tt_ioctl,
+        .llseek         = no_llseek,
+};
+
+static struct video_device terratec_radio=
+{
+        .owner          = THIS_MODULE,
+        .name           = "TerraTec ActiveRadio",
+        .type           = VID_TYPE_TUNER,
+        .hardware       = VID_HARDWARE_TERRATEC,
+        .fops           = &terratec_fops,
+};
+
+static int __init terratec_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, "terratec")) 
+        {
+                printk(KERN_ERR "TerraTec: port 0x%x already in use\n", io);
+                return -EBUSY;
+        }
+
+        terratec_radio.priv=&terratec_unit;
+        
+        spin_lock_init(&lock);
+        
+        if(video_register_device(&terratec_radio, VFL_TYPE_RADIO, radio_nr)==-1)
+        {
+                release_region(io,2);
+                return -EINVAL;
+        }
+                
+        printk(KERN_INFO "TERRATEC ActivRadio Standalone card driver.\n");
+
+        /* mute card - prevents noisy bootups */
+
+        /* this ensures that the volume is all the way down  */
+        cardWriteVol(0);
+        terratec_unit.curvol = 0;
+
+        return 0;
+}
+
+MODULE_AUTHOR("R.OFFERMANNS & others");
+MODULE_DESCRIPTION("A driver for the TerraTec ActiveRadio Standalone radio card.");
+MODULE_LICENSE("GPL");
+module_param(io, int, 0);
+MODULE_PARM_DESC(io, "I/O address of the TerraTec ActiveRadio card (0x590 or 0x591)");
+module_param(radio_nr, int, 0);
+
+static void __exit terratec_cleanup_module(void)
+{
+        video_unregister_device(&terratec_radio);
+        release_region(io,2);
+        printk(KERN_INFO "TERRATEC ActivRadio Standalone card driver unloaded.\n");     
+}
+
+module_init(terratec_init);
+module_exit(terratec_cleanup_module);
+