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, 385 insertions, 0 deletions

diff --git a/drivers/media/radio/radio-zoltrix.c b/drivers/media/radio/radio-zoltrix.c
new file mode 100644
index 000000000000..342f92df4aba
--- /dev/null
+++ b/drivers/media/radio/radio-zoltrix.c
@@ -0,0 +1,385 @@
+/* zoltrix radio plus driver for Linux radio support
+ * (c) 1998 C. van Schaik <carl@leg.uct.ac.za>
+ *
+ * BUGS  
+ *  Due to the inconsistency in reading from the signal flags
+ *  it is difficult to get an accurate tuned signal.
+ *
+ *  It seems that the card is not linear to 0 volume. It cuts off
+ *  at a low volume, and it is not possible (at least I have not found)
+ *  to get fine volume control over the low volume range.
+ *
+ *  Some code derived from code by Romolo Manfredini
+ *                                 romolo@bicnet.it
+ *
+ * 1999-05-06 - (C. van Schaik)
+ *            - Make signal strength and stereo scans
+ *              kinder to cpu while in delay
+ * 1999-01-05 - (C. van Schaik)
+ *            - Changed tuning to 1/160Mhz accuracy
+ *            - Added stereo support
+ *              (card defaults to stereo)
+ *              (can explicitly force mono on the card)
+ *              (can detect if station is in stereo)
+ *            - Added unmute function
+ *            - Reworked ioctl functions
+ * 2002-07-15 - Fix Stereo typo
+ */
+
+#include <linux/module.h>       /* Modules                        */
+#include <linux/init.h>         /* Initdata                       */
+#include <linux/ioport.h>       /* check_region, request_region   */
+#include <linux/delay.h>        /* udelay, msleep                 */
+#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_ZOLTRIX_PORT      */
+
+#ifndef CONFIG_RADIO_ZOLTRIX_PORT
+#define CONFIG_RADIO_ZOLTRIX_PORT -1
+#endif
+
+static int io = CONFIG_RADIO_ZOLTRIX_PORT;
+static int radio_nr = -1;
+
+struct zol_device {
+        int port;
+        int curvol;
+        unsigned long curfreq;
+        int muted;
+        unsigned int stereo;
+        struct semaphore lock;
+};
+
+static int zol_setvol(struct zol_device *dev, int vol)
+{
+        dev->curvol = vol;
+        if (dev->muted)
+                return 0;
+
+        down(&dev->lock);
+        if (vol == 0) {
+                outb(0, io);
+                outb(0, io);
+                inb(io + 3);    /* Zoltrix needs to be read to confirm */
+                up(&dev->lock);
+                return 0;
+        }
+
+        outb(dev->curvol-1, io);
+        msleep(10);
+        inb(io + 2);
+        up(&dev->lock);
+        return 0;
+}
+
+static void zol_mute(struct zol_device *dev)
+{
+        dev->muted = 1;
+        down(&dev->lock);
+        outb(0, io);
+        outb(0, io);
+        inb(io + 3);            /* Zoltrix needs to be read to confirm */
+        up(&dev->lock);
+}
+
+static void zol_unmute(struct zol_device *dev)
+{
+        dev->muted = 0;
+        zol_setvol(dev, dev->curvol);
+}
+
+static int zol_setfreq(struct zol_device *dev, unsigned long freq)
+{
+        /* tunes the radio to the desired frequency */
+        unsigned long long bitmask, f, m;
+        unsigned int stereo = dev->stereo;
+        int i;
+
+        if (freq == 0)
+                return 1;
+        m = (freq / 160 - 8800) * 2;
+        f = (unsigned long long) m + 0x4d1c;
+
+        bitmask = 0xc480402c10080000ull;
+        i = 45;
+
+        down(&dev->lock);
+        
+        outb(0, io);
+        outb(0, io);
+        inb(io + 3);            /* Zoltrix needs to be read to confirm */
+
+        outb(0x40, io);
+        outb(0xc0, io);
+
+        bitmask = (bitmask ^ ((f & 0xff) << 47) ^ ((f & 0xff00) << 30) ^ ( stereo << 31));
+        while (i--) {
+                if ((bitmask & 0x8000000000000000ull) != 0) {
+                        outb(0x80, io);
+                        udelay(50);
+                        outb(0x00, io);
+                        udelay(50);
+                        outb(0x80, io);
+                        udelay(50);
+                } else {
+                        outb(0xc0, io);
+                        udelay(50);
+                        outb(0x40, io);
+                        udelay(50);
+                        outb(0xc0, io);
+                        udelay(50);
+                }
+                bitmask *= 2;
+        }
+        /* termination sequence */
+        outb(0x80, io);
+        outb(0xc0, io);
+        outb(0x40, io);
+        udelay(1000);
+        inb(io+2);
+
+        udelay(1000);
+        
+        if (dev->muted)
+        {
+                outb(0, io);
+                outb(0, io);
+                inb(io + 3);
+                udelay(1000);
+        }
+        
+        up(&dev->lock);
+        
+        if(!dev->muted)
+        {
+                zol_setvol(dev, dev->curvol);
+        }
+        return 0;
+}
+
+/* Get signal strength */
+
+static int zol_getsigstr(struct zol_device *dev)
+{
+        int a, b;
+
+        down(&dev->lock);
+        outb(0x00, io);         /* This stuff I found to do nothing */
+        outb(dev->curvol, io);
+        msleep(20);
+
+        a = inb(io);
+        msleep(10);
+        b = inb(io);
+
+        up(&dev->lock);
+        
+        if (a != b)
+                return (0);
+
+        if ((a == 0xcf) || (a == 0xdf)  /* I found this out by playing */
+                || (a == 0xef))       /* with a binary scanner on the card io */
+                return (1);
+        return (0);
+}
+
+static int zol_is_stereo (struct zol_device *dev)
+{
+        int x1, x2;
+
+        down(&dev->lock);
+        
+        outb(0x00, io);
+        outb(dev->curvol, io);
+        msleep(20);
+
+        x1 = inb(io);
+        msleep(10);
+        x2 = inb(io);
+
+        up(&dev->lock);
+        
+        if ((x1 == x2) && (x1 == 0xcf))
+                return 1;
+        return 0;
+}
+
+static int zol_do_ioctl(struct inode *inode, struct file *file,
+                        unsigned int cmd, void *arg)
+{
+        struct video_device *dev = video_devdata(file);
+        struct zol_device *zol = dev->priv;
+
+        switch (cmd) {
+        case VIDIOCGCAP:
+                {
+                        struct video_capability *v = arg;
+
+                        memset(v,0,sizeof(*v));
+                        v->type = VID_TYPE_TUNER;
+                        v->channels = 1 + zol->stereo;
+                        v->audios = 1;
+                        strcpy(v->name, "Zoltrix Radio");
+                        return 0;
+                }
+        case VIDIOCGTUNER:
+                {
+                        struct video_tuner *v = arg;
+                        if (v->tuner)   
+                                return -EINVAL;
+                        strcpy(v->name, "FM");
+                        v->rangelow = (int) (88.0 * 16000);
+                        v->rangehigh = (int) (108.0 * 16000);
+                        v->flags = zol_is_stereo(zol)
+                                        ? VIDEO_TUNER_STEREO_ON : 0;
+                        v->flags |= VIDEO_TUNER_LOW;
+                        v->mode = VIDEO_MODE_AUTO;
+                        v->signal = 0xFFFF * zol_getsigstr(zol);
+                        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 = zol->curfreq;
+                return 0;
+        }
+        case VIDIOCSFREQ:
+        {
+                unsigned long *freq = arg;
+                zol->curfreq = *freq;
+                zol_setfreq(zol, zol->curfreq);
+                return 0;
+        }
+        case VIDIOCGAUDIO:
+                {
+                        struct video_audio *v = arg;
+                        memset(v, 0, sizeof(*v));
+                        v->flags |= VIDEO_AUDIO_MUTABLE | VIDEO_AUDIO_VOLUME;
+                        v->mode |= zol_is_stereo(zol)
+                                ? VIDEO_SOUND_STEREO : VIDEO_SOUND_MONO;
+                        v->volume = zol->curvol * 4096;
+                        v->step = 4096;
+                        strcpy(v->name, "Zoltrix Radio");
+                        return 0;
+                }
+        case VIDIOCSAUDIO:
+                {
+                        struct video_audio *v = arg;
+                        if (v->audio)
+                                return -EINVAL;
+
+                        if (v->flags & VIDEO_AUDIO_MUTE)
+                                zol_mute(zol);
+                        else {
+                                zol_unmute(zol);
+                                zol_setvol(zol, v->volume / 4096);
+                        }
+
+                        if (v->mode & VIDEO_SOUND_STEREO) {
+                                zol->stereo = 1;
+                                zol_setfreq(zol, zol->curfreq);
+                        }
+                        if (v->mode & VIDEO_SOUND_MONO) {
+                                zol->stereo = 0;
+                                zol_setfreq(zol, zol->curfreq);
+                        }
+                        return 0;
+                }
+        default:
+                return -ENOIOCTLCMD;
+        }
+}
+
+static int zol_ioctl(struct inode *inode, struct file *file,
+                     unsigned int cmd, unsigned long arg)
+{
+        return video_usercopy(inode, file, cmd, arg, zol_do_ioctl);
+}
+
+static struct zol_device zoltrix_unit;
+
+static struct file_operations zoltrix_fops =
+{
+        .owner          = THIS_MODULE,
+        .open           = video_exclusive_open,
+        .release        = video_exclusive_release,
+        .ioctl          = zol_ioctl,
+        .llseek         = no_llseek,
+};
+
+static struct video_device zoltrix_radio =
+{
+        .owner          = THIS_MODULE,
+        .name           = "Zoltrix Radio Plus",
+        .type           = VID_TYPE_TUNER,
+        .hardware       = VID_HARDWARE_ZOLTRIX,
+        .fops           = &zoltrix_fops,
+};
+
+static int __init zoltrix_init(void)
+{
+        if (io == -1) {
+                printk(KERN_ERR "You must set an I/O address with io=0x???\n");
+                return -EINVAL;
+        }
+        if ((io != 0x20c) && (io != 0x30c)) {
+                printk(KERN_ERR "zoltrix: invalid port, try 0x20c or 0x30c\n");
+                return -ENXIO;
+        }
+
+        zoltrix_radio.priv = &zoltrix_unit;
+        if (!request_region(io, 2, "zoltrix")) {
+                printk(KERN_ERR "zoltrix: port 0x%x already in use\n", io);
+                return -EBUSY;
+        }
+
+        if (video_register_device(&zoltrix_radio, VFL_TYPE_RADIO, radio_nr) == -1)
+        {
+                release_region(io, 2);
+                return -EINVAL;
+        }
+        printk(KERN_INFO "Zoltrix Radio Plus card driver.\n");
+
+        init_MUTEX(&zoltrix_unit.lock);
+        
+        /* mute card - prevents noisy bootups */
+
+        /* this ensures that the volume is all the way down  */
+
+        outb(0, io);
+        outb(0, io);
+        msleep(20);
+        inb(io + 3);
+
+        zoltrix_unit.curvol = 0;
+        zoltrix_unit.stereo = 1;
+
+        return 0;
+}
+
+MODULE_AUTHOR("C.van Schaik");
+MODULE_DESCRIPTION("A driver for the Zoltrix Radio Plus.");
+MODULE_LICENSE("GPL");
+
+module_param(io, int, 0);
+MODULE_PARM_DESC(io, "I/O address of the Zoltrix Radio Plus (0x20c or 0x30c)");
+module_param(radio_nr, int, 0);
+
+static void __exit zoltrix_cleanup_module(void)
+{
+        video_unregister_device(&zoltrix_radio);
+        release_region(io, 2);
+}
+
+module_init(zoltrix_init);
+module_exit(zoltrix_cleanup_module);
+