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, 328 insertions, 0 deletions

diff --git a/drivers/media/radio/radio-sf16fmi.c b/drivers/media/radio/radio-sf16fmi.c
new file mode 100644
index 00000000000..3a464a09221
--- /dev/null
+++ b/drivers/media/radio/radio-sf16fmi.c
@@ -0,0 +1,328 @@
+/* SF16FMI radio driver for Linux radio support
+ * heavily based on rtrack driver...
+ * (c) 1997 M. Kirkwood
+ * (c) 1998 Petr Vandrovec, vandrove@vc.cvut.cz
+ *
+ * Fitted to new interface by Alan Cox <alan.cox@linux.org>
+ * Made working and cleaned up functions <mikael.hedin@irf.se>
+ * Support for ISAPnP by Ladislav Michl <ladis@psi.cz>
+ *
+ * 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
+ *  control on SB-part of SF16FMI
+ *  
+ */
+
+#include <linux/kernel.h>       /* __setup                      */
+#include <linux/module.h>       /* Modules                      */
+#include <linux/init.h>         /* Initdata                     */
+#include <linux/ioport.h>       /* check_region, request_region */
+#include <linux/delay.h>        /* udelay                       */
+#include <linux/videodev.h>     /* kernel radio structs         */
+#include <linux/isapnp.h>
+#include <asm/io.h>             /* outb, outb_p                 */
+#include <asm/uaccess.h>        /* copy to/from user            */
+#include <asm/semaphore.h>
+
+struct fmi_device
+{
+        int port;
+        int curvol; /* 1 or 0 */
+        unsigned long curfreq; /* freq in kHz */
+        __u32 flags;
+};
+
+static int io = -1; 
+static int radio_nr = -1;
+static struct pnp_dev *dev = NULL;
+static struct semaphore lock;
+
+/* freq is in 1/16 kHz to internal number, hw precision is 50 kHz */
+/* It is only useful to give freq in intervall of 800 (=0.05Mhz),
+ * other bits will be truncated, e.g 92.7400016 -> 92.7, but 
+ * 92.7400017 -> 92.75
+ */
+#define RSF16_ENCODE(x) ((x)/800+214)
+#define RSF16_MINFREQ 87*16000
+#define RSF16_MAXFREQ 108*16000
+
+static void outbits(int bits, unsigned int data, int port)
+{
+        while(bits--) {
+                if(data & 1) {
+                        outb(5, port);
+                        udelay(6);
+                        outb(7, port);
+                        udelay(6);
+                } else {
+                        outb(1, port);
+                        udelay(6);
+                        outb(3, port);
+                        udelay(6);
+                }
+                data>>=1;
+        }
+}
+
+static inline void fmi_mute(int port)
+{
+        down(&lock);
+        outb(0x00, port);
+        up(&lock);
+}
+
+static inline void fmi_unmute(int port)
+{
+        down(&lock);
+        outb(0x08, port);
+        up(&lock);
+}
+
+static inline int fmi_setfreq(struct fmi_device *dev)
+{
+        int myport = dev->port;
+        unsigned long freq = dev->curfreq;
+
+        down(&lock);
+
+        outbits(16, RSF16_ENCODE(freq), myport);
+        outbits(8, 0xC0, myport);
+        msleep(143);            /* was schedule_timeout(HZ/7) */
+        up(&lock);
+        if (dev->curvol) fmi_unmute(myport);
+        return 0;
+}
+
+static inline int fmi_getsigstr(struct fmi_device *dev)
+{
+        int val;
+        int res;
+        int myport = dev->port;
+
+        
+        down(&lock);
+        val = dev->curvol ? 0x08 : 0x00;        /* unmute/mute */
+        outb(val, myport);
+        outb(val | 0x10, myport);
+        msleep(143);            /* was schedule_timeout(HZ/7) */
+        res = (int)inb(myport+1);
+        outb(val, myport);
+        
+        up(&lock);
+        return (res & 2) ? 0 : 0xFFFF;
+}
+
+static int fmi_do_ioctl(struct inode *inode, struct file *file,
+                        unsigned int cmd, void *arg)
+{
+        struct video_device *dev = video_devdata(file);
+        struct fmi_device *fmi=dev->priv;
+        
+        switch(cmd)
+        {
+                case VIDIOCGCAP:
+                {
+                        struct video_capability *v = arg;
+                        memset(v,0,sizeof(*v));
+                        strcpy(v->name, "SF16-FMx 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 = (fmi->flags & VIDEO_TUNER_LOW) ? 1 : 1000;
+                        v->rangelow = RSF16_MINFREQ/mult;
+                        v->rangehigh = RSF16_MAXFREQ/mult;
+                        v->flags=fmi->flags;
+                        v->mode=VIDEO_MODE_AUTO;
+                        v->signal = fmi_getsigstr(fmi);
+                        return 0;
+                }
+                case VIDIOCSTUNER:
+                {
+                        struct video_tuner *v = arg;
+                        if(v->tuner!=0)
+                                return -EINVAL;
+                        fmi->flags = v->flags & VIDEO_TUNER_LOW;
+                        /* Only 1 tuner so no setting needed ! */
+                        return 0;
+                }
+                case VIDIOCGFREQ:
+                {
+                        unsigned long *freq = arg;
+                        *freq = fmi->curfreq;
+                        if (!(fmi->flags & VIDEO_TUNER_LOW))
+                            *freq /= 1000;
+                        return 0;
+                }
+                case VIDIOCSFREQ:
+                {
+                        unsigned long *freq = arg;
+                        if (!(fmi->flags & VIDEO_TUNER_LOW))
+                                *freq *= 1000;
+                        if (*freq < RSF16_MINFREQ || *freq > RSF16_MAXFREQ )
+                                return -EINVAL;
+                        /*rounding in steps of 800 to match th freq
+                          that will be used */
+                        fmi->curfreq = (*freq/800)*800; 
+                        fmi_setfreq(fmi);
+                        return 0;
+                }
+                case VIDIOCGAUDIO:
+                {       
+                        struct video_audio *v = arg;
+                        memset(v,0,sizeof(*v));
+                        v->flags=( (!fmi->curvol)*VIDEO_AUDIO_MUTE | VIDEO_AUDIO_MUTABLE);
+                        strcpy(v->name, "Radio");
+                        v->mode=VIDEO_SOUND_STEREO;
+                        return 0;                       
+                }
+                case VIDIOCSAUDIO:
+                {
+                        struct video_audio *v = arg;
+                        if(v->audio)
+                                return -EINVAL;
+                        fmi->curvol= v->flags&VIDEO_AUDIO_MUTE ? 0 : 1;
+                        fmi->curvol ? 
+                                fmi_unmute(fmi->port) : fmi_mute(fmi->port);
+                        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 fmi_ioctl(struct inode *inode, struct file *file,
+                     unsigned int cmd, unsigned long arg)
+{
+        return video_usercopy(inode, file, cmd, arg, fmi_do_ioctl);
+}
+
+static struct fmi_device fmi_unit;
+
+static struct file_operations fmi_fops = {
+        .owner          = THIS_MODULE,
+        .open           = video_exclusive_open,
+        .release        = video_exclusive_release,
+        .ioctl          = fmi_ioctl,
+        .llseek         = no_llseek,
+};
+
+static struct video_device fmi_radio=
+{
+        .owner          = THIS_MODULE,
+        .name           = "SF16FMx radio",
+        .type           = VID_TYPE_TUNER,
+        .hardware       = VID_HARDWARE_SF16MI,
+        .fops           = &fmi_fops,
+};
+
+/* ladis: this is my card. does any other types exist? */
+static struct isapnp_device_id id_table[] __devinitdata = {
+        {       ISAPNP_ANY_ID, ISAPNP_ANY_ID,
+                ISAPNP_VENDOR('M','F','R'), ISAPNP_FUNCTION(0xad10), 0},
+        {       ISAPNP_CARD_END, },
+};
+
+MODULE_DEVICE_TABLE(isapnp, id_table);
+
+static int isapnp_fmi_probe(void)
+{
+        int i = 0;
+
+        while (id_table[i].card_vendor != 0 && dev == NULL) {
+                dev = pnp_find_dev(NULL, id_table[i].vendor,
+                                   id_table[i].function, NULL);
+                i++;
+        }
+
+        if (!dev)
+                return -ENODEV;
+        if (pnp_device_attach(dev) < 0)
+                return -EAGAIN;
+        if (pnp_activate_dev(dev) < 0) {
+                printk ("radio-sf16fmi: PnP configure failed (out of resources?)\n");
+                pnp_device_detach(dev);
+                return -ENOMEM;
+        }
+        if (!pnp_port_valid(dev, 0)) {
+                pnp_device_detach(dev);
+                return -ENODEV;
+        }
+
+        i = pnp_port_start(dev, 0);
+        printk ("radio-sf16fmi: PnP reports card at %#x\n", i);
+
+        return i;
+}
+
+static int __init fmi_init(void)
+{
+        if (io < 0)
+                io = isapnp_fmi_probe();
+        if (io < 0) {
+                printk(KERN_ERR "radio-sf16fmi: No PnP card found.\n");
+                return io;
+        }
+        if (!request_region(io, 2, "radio-sf16fmi")) {
+                printk(KERN_ERR "radio-sf16fmi: port 0x%x already in use\n", io);
+                return -EBUSY;
+        }
+
+        fmi_unit.port = io;
+        fmi_unit.curvol = 0;
+        fmi_unit.curfreq = 0;
+        fmi_unit.flags = VIDEO_TUNER_LOW;
+        fmi_radio.priv = &fmi_unit;
+        
+        init_MUTEX(&lock);
+        
+        if (video_register_device(&fmi_radio, VFL_TYPE_RADIO, radio_nr) == -1) {
+                release_region(io, 2);
+                return -EINVAL;
+        }
+                
+        printk(KERN_INFO "SF16FMx radio card driver at 0x%x\n", io);
+        /* mute card - prevents noisy bootups */
+        fmi_mute(io);
+        return 0;
+}
+
+MODULE_AUTHOR("Petr Vandrovec, vandrove@vc.cvut.cz and M. Kirkwood");
+MODULE_DESCRIPTION("A driver for the SF16MI radio.");
+MODULE_LICENSE("GPL");
+
+module_param(io, int, 0);
+MODULE_PARM_DESC(io, "I/O address of the SF16MI card (0x284 or 0x384)");
+module_param(radio_nr, int, 0);
+
+static void __exit fmi_cleanup_module(void)
+{
+        video_unregister_device(&fmi_radio);
+        release_region(io, 2);
+        if (dev)
+                pnp_device_detach(dev);
+}
+
+module_init(fmi_init);
+module_exit(fmi_cleanup_module);