Linux-2.6.12-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, 434 insertions, 0 deletions

diff --git a/drivers/media/radio/radio-sf16fmr2.c b/drivers/media/radio/radio-sf16fmr2.c
new file mode 100644
index 000000000000..0732efda6a98
--- /dev/null
+++ b/drivers/media/radio/radio-sf16fmr2.c
@@ -0,0 +1,434 @@
+/* SF16FMR2 radio driver for Linux radio support
+ * heavily based on fmi driver...
+ * (c) 2000-2002 Ziglio Frediano, freddy77@angelfire.com
+ *
+ * Notes on the hardware
+ *
+ *  Frequency control is done digitally -- ie out(port,encodefreq(95.8));
+ *  No volume control - only mute/unmute - you have to use line volume
+ *
+ *  For read stereo/mono you must wait 0.1 sec after set frequency and
+ *  card unmuted so I set frequency on unmute
+ *  Signal handling seem to work only on autoscanning (not implemented)
+ */
+
+#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 <asm/semaphore.h>
+
+static struct semaphore lock;
+
+#undef DEBUG
+//#define DEBUG 1
+
+#ifdef DEBUG
+# define  debug_print(s) printk s
+#else
+# define  debug_print(s)
+#endif
+
+/* this should be static vars for module size */
+struct fmr2_device
+{
+        int port;
+        int curvol; /* 0-65535, if not volume 0 or 65535 */
+        int mute;
+        int stereo; /* card is producing stereo audio */
+        unsigned long curfreq; /* freq in kHz */
+        int card_type;
+        __u32 flags;
+};
+
+static int io = 0x384;
+static int radio_nr = -1;
+
+/* hw precision is 12.5 kHz
+ * It is only usefull to give freq in intervall of 200 (=0.0125Mhz),
+ * other bits will be truncated
+ */
+#define RSF16_ENCODE(x) ((x)/200+856)
+#define RSF16_MINFREQ 87*16000
+#define RSF16_MAXFREQ 108*16000
+
+static inline void wait(int n,int port)
+{
+        for (;n;--n) inb(port);
+}
+
+static void outbits(int bits, unsigned int data, int nWait, int port)
+{
+        int bit;
+        for(;--bits>=0;) {
+                bit = (data>>bits) & 1;
+                outb(bit,port);
+                wait(nWait,port);
+                outb(bit|2,port);
+                wait(nWait,port);
+                outb(bit,port);
+                wait(nWait,port);
+        }
+}
+
+static inline void fmr2_mute(int port)
+{
+        outb(0x00, port);
+        wait(4,port);
+}
+
+static inline void fmr2_unmute(int port)
+{
+        outb(0x04, port);
+        wait(4,port);
+}
+
+static inline int fmr2_stereo_mode(int port)
+{
+        int n = inb(port);
+        outb(6,port);
+        inb(port);
+        n = ((n>>3)&1)^1;
+        debug_print((KERN_DEBUG "stereo: %d\n", n));
+        return n;
+}
+
+static int fmr2_product_info(struct fmr2_device *dev)
+{
+        int n = inb(dev->port);
+        n &= 0xC1;
+        if (n == 0)
+        {
+                /* this should support volume set */
+                dev->card_type = 12;
+                return 0;
+        }
+        /* not volume (mine is 11) */
+        dev->card_type = (n==128)?11:0;
+        return n;
+}
+
+static inline int fmr2_getsigstr(struct fmr2_device *dev)
+{
+        /* !!! work only if scanning freq */
+        int port = dev->port, res = 0xffff;
+        outb(5,port);
+        wait(4,port);
+        if (!(inb(port)&1)) res = 0;
+        debug_print((KERN_DEBUG "signal: %d\n", res));
+        return res;
+}
+
+/* set frequency and unmute card */
+static int fmr2_setfreq(struct fmr2_device *dev)
+{
+        int port = dev->port;
+        unsigned long freq = dev->curfreq;
+
+        fmr2_mute(port);
+
+        /* 0x42 for mono output
+         * 0x102 forward scanning
+         * 0x182 scansione avanti
+         */
+        outbits(9,0x2,3,port);
+        outbits(16,RSF16_ENCODE(freq),2,port);
+
+        fmr2_unmute(port);
+
+        /* wait 0.11 sec */
+        msleep(110);
+
+        /* NOTE if mute this stop radio
+           you must set freq on unmute */
+        dev->stereo = fmr2_stereo_mode(port);
+        return 0;
+}
+
+/* !!! not tested, in my card this does't work !!! */
+static int fmr2_setvolume(struct fmr2_device *dev)
+{
+        int i,a,n, port = dev->port;
+
+        if (dev->card_type != 11) return 1;
+
+        switch( (dev->curvol+(1<<11)) >> 12 )
+        {
+        case 0: case 1: n = 0x21; break;
+        case 2: n = 0x84; break;
+        case 3: n = 0x90; break;
+        case 4: n = 0x104; break;
+        case 5: n = 0x110; break;
+        case 6: n = 0x204; break;
+        case 7: n = 0x210; break;
+        case 8: n = 0x402; break;
+        case 9: n = 0x404; break;
+        default:
+        case 10: n = 0x408; break;
+        case 11: n = 0x410; break;
+        case 12: n = 0x801; break;
+        case 13: n = 0x802; break;
+        case 14: n = 0x804; break;
+        case 15: n = 0x808; break;
+        case 16: n = 0x810; break;
+        }
+        for(i=12;--i>=0;)
+        {
+                a = ((n >> i) & 1) << 6; /* if (a=0) a= 0; else a= 0x40; */
+                outb(a|4, port);
+                wait(4,port);
+                outb(a|0x24, port);
+                wait(4,port);
+                outb(a|4, port);
+                wait(4,port);
+        }
+        for(i=6;--i>=0;)
+        {
+                a = ((0x18 >> i) & 1) << 6;
+                outb(a|4, port);
+                wait(4,port);
+                outb(a|0x24, port);
+                wait(4,port);
+                outb(a|4, port);
+                wait(4,port);
+        }
+        wait(4,port);
+        outb(0x14, port);
+
+        return 0;
+}
+
+static int fmr2_do_ioctl(struct inode *inode, struct file *file,
+                      unsigned int cmd, void *arg)
+{
+        struct video_device *dev = video_devdata(file);
+        struct fmr2_device *fmr2 = dev->priv;
+        debug_print((KERN_DEBUG "freq %ld flags %d vol %d mute %d "
+                "stereo %d type %d\n",
+                fmr2->curfreq, fmr2->flags, fmr2->curvol, fmr2->mute,
+                fmr2->stereo, fmr2->card_type));
+
+        switch(cmd)
+        {
+                case VIDIOCGCAP:
+                {
+                        struct video_capability *v = arg;
+                        memset(v,0,sizeof(*v));
+                        strcpy(v->name, "SF16-FMR2 radio");
+                        v->type=VID_TYPE_TUNER;
+                        v->channels=1;
+                        v->audios=1;
+                        return 0;
+                }
+                case VIDIOCGTUNER:
+                {
+                        struct video_tuner *v = arg;
+                        int mult;
+
+                        if(v->tuner)     /* Only 1 tuner */
+                                return -EINVAL;
+                        strcpy(v->name, "FM");
+                        mult = (fmr2->flags & VIDEO_TUNER_LOW) ? 1 : 1000;
+                        v->rangelow = RSF16_MINFREQ/mult;
+                        v->rangehigh = RSF16_MAXFREQ/mult;
+                        v->flags = fmr2->flags | VIDEO_AUDIO_MUTABLE;
+                        if (fmr2->mute)
+                                v->flags |= VIDEO_AUDIO_MUTE;
+                        v->mode=VIDEO_MODE_AUTO;
+                        down(&lock);
+                        v->signal = fmr2_getsigstr(fmr2);
+                        up(&lock);
+                        return 0;
+                }
+                case VIDIOCSTUNER:
+                {
+                        struct video_tuner *v = arg;
+                        if (v->tuner!=0)
+                                return -EINVAL;
+                        fmr2->flags = v->flags & VIDEO_TUNER_LOW;
+                        return 0;
+                }
+                case VIDIOCGFREQ:
+                {
+                        unsigned long *freq = arg;
+                        *freq = fmr2->curfreq;
+                        if (!(fmr2->flags & VIDEO_TUNER_LOW))
+                                *freq /= 1000;
+                        return 0;
+                }
+                case VIDIOCSFREQ:
+                {
+                        unsigned long *freq = arg;
+                        if (!(fmr2->flags & VIDEO_TUNER_LOW))
+                                *freq *= 1000;
+                        if ( *freq < RSF16_MINFREQ || *freq > RSF16_MAXFREQ )
+                                return -EINVAL;
+                        /* rounding in steps of 200 to match th freq
+                         * that will be used
+                         */
+                        fmr2->curfreq = (*freq/200)*200;
+
+                        /* set card freq (if not muted) */
+                        if (fmr2->curvol && !fmr2->mute)
+                        {
+                                down(&lock);
+                                fmr2_setfreq(fmr2);
+                                up(&lock);
+                        }
+                        return 0;
+                }
+                case VIDIOCGAUDIO:
+                {
+                        struct video_audio *v = arg;
+                        memset(v,0,sizeof(*v));
+                        /* !!! do not return VIDEO_AUDIO_MUTE */
+                        v->flags = VIDEO_AUDIO_MUTABLE;
+                        strcpy(v->name, "Radio");
+                        /* get current stereo mode */
+                        v->mode = fmr2->stereo ? VIDEO_SOUND_STEREO: VIDEO_SOUND_MONO;
+                        /* volume supported ? */
+                        if (fmr2->card_type == 11)
+                        {
+                                v->flags |= VIDEO_AUDIO_VOLUME;
+                                v->step = 1 << 12;
+                                v->volume = fmr2->curvol;
+                        }
+                        debug_print((KERN_DEBUG "Get flags %d vol %d\n", v->flags, v->volume));
+                        return 0;
+                }
+                case VIDIOCSAUDIO:
+                {
+                        struct video_audio *v = arg;
+                        if(v->audio)
+                                return -EINVAL;
+                        debug_print((KERN_DEBUG "Set flags %d vol %d\n", v->flags, v->volume));
+                        /* set volume */
+                        if (v->flags & VIDEO_AUDIO_VOLUME)
+                                fmr2->curvol = v->volume; /* !!! set with precision */
+                        if (fmr2->card_type != 11) fmr2->curvol = 65535;
+                        fmr2->mute = 0;
+                        if (v->flags & VIDEO_AUDIO_MUTE)
+                                fmr2->mute = 1;
+#ifdef DEBUG
+                        if (fmr2->curvol && !fmr2->mute)
+                                printk(KERN_DEBUG "unmute\n");
+                        else
+                                printk(KERN_DEBUG "mute\n");
+#endif
+                        down(&lock);
+                        if (fmr2->curvol && !fmr2->mute)
+                        {
+                                fmr2_setvolume(fmr2);
+                                fmr2_setfreq(fmr2);
+                        }
+                        else fmr2_mute(fmr2->port);
+                        up(&lock);
+                        return 0;
+                }
+                case VIDIOCGUNIT:
+                {
+                        struct video_unit *v = arg;
+                        v->video=VIDEO_NO_UNIT;
+                        v->vbi=VIDEO_NO_UNIT;
+                        v->radio=dev->minor;
+                        v->audio=0; /* How do we find out this??? */
+                        v->teletext=VIDEO_NO_UNIT;
+                        return 0;
+                }
+                default:
+                        return -ENOIOCTLCMD;
+        }
+}
+
+static int fmr2_ioctl(struct inode *inode, struct file *file,
+                      unsigned int cmd, unsigned long arg)
+ {
+        return video_usercopy(inode, file, cmd, arg, fmr2_do_ioctl);
+}
+
+static struct fmr2_device fmr2_unit;
+
+static struct file_operations fmr2_fops = {
+        .owner          = THIS_MODULE,
+        .open           = video_exclusive_open,
+        .release        = video_exclusive_release,
+        .ioctl          = fmr2_ioctl,
+        .llseek         = no_llseek,
+};
+
+static struct video_device fmr2_radio=
+{
+        .owner          = THIS_MODULE,
+        .name           = "SF16FMR2 radio",
+        . type          = VID_TYPE_TUNER,
+        .hardware       = VID_HARDWARE_SF16FMR2,
+        .fops           = &fmr2_fops,
+};
+
+static int __init fmr2_init(void)
+{
+        fmr2_unit.port = io;
+        fmr2_unit.curvol = 0;
+        fmr2_unit.mute = 0;
+        fmr2_unit.curfreq = 0;
+        fmr2_unit.stereo = 1;
+        fmr2_unit.flags = VIDEO_TUNER_LOW;
+        fmr2_unit.card_type = 0;
+        fmr2_radio.priv = &fmr2_unit;
+
+        init_MUTEX(&lock);
+
+        if (request_region(io, 2, "sf16fmr2"))
+        {
+                printk(KERN_ERR "fmr2: port 0x%x already in use\n", io);
+                return -EBUSY;
+        }
+
+        if(video_register_device(&fmr2_radio, VFL_TYPE_RADIO, radio_nr)==-1)
+        {
+                release_region(io, 2);
+                return -EINVAL;
+        }
+
+        printk(KERN_INFO "SF16FMR2 radio card driver at 0x%x.\n", io);
+        debug_print((KERN_DEBUG "Mute %d Low %d\n",VIDEO_AUDIO_MUTE,VIDEO_TUNER_LOW));
+        /* mute card - prevents noisy bootups */
+        down(&lock);
+        fmr2_mute(io);
+        fmr2_product_info(&fmr2_unit);
+        up(&lock);
+        debug_print((KERN_DEBUG "card_type %d\n", fmr2_unit.card_type));
+        return 0;
+}
+
+MODULE_AUTHOR("Ziglio Frediano, freddy77@angelfire.com");
+MODULE_DESCRIPTION("A driver for the SF16FMR2 radio.");
+MODULE_LICENSE("GPL");
+
+module_param(io, int, 0);
+MODULE_PARM_DESC(io, "I/O address of the SF16FMR2 card (should be 0x384, if do not work try 0x284)");
+module_param(radio_nr, int, 0);
+
+static void __exit fmr2_cleanup_module(void)
+{
+        video_unregister_device(&fmr2_radio);
+        release_region(io,2);
+}
+
+module_init(fmr2_init);
+module_exit(fmr2_cleanup_module);
+
+#ifndef MODULE
+
+static int __init fmr2_setup_io(char *str)
+{
+        get_option(&str, &io);
+        return 1;
+}
+
+__setup("sf16fmr2=", fmr2_setup_io);
+
+#endif