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, 383 insertions, 0 deletions

diff --git a/drivers/media/radio/radio-typhoon.c b/drivers/media/radio/radio-typhoon.c
new file mode 100644
index 000000000000..d7da901ebe90
--- /dev/null
+++ b/drivers/media/radio/radio-typhoon.c
@@ -0,0 +1,383 @@
+/* Typhoon Radio Card driver for radio support
+ * (c) 1999 Dr. Henrik Seidel <Henrik.Seidel@gmx.de>
+ *
+ * Card manufacturer:
+ * http://194.18.155.92/idc/prod2.idc?nr=50753&lang=e
+ *
+ * Notes on the hardware
+ *
+ * This card has two output sockets, one for speakers and one for line.
+ * The speaker output has volume control, but only in four discrete
+ * steps. The line output has neither volume control nor mute.
+ *
+ * The card has auto-stereo according to its manual, although it all
+ * sounds mono to me (even with the Win/DOS drivers). Maybe it's my
+ * antenna - I really don't know for sure.
+ *
+ * Frequency control is done digitally.
+ *
+ * Volume control is done digitally, but there are only four different
+ * possible values. So you should better always turn the volume up and
+ * use line control. I got the best results by connecting line output
+ * to the sound card microphone input. For such a configuration the
+ * volume control has no effect, since volume control only influences
+ * the speaker output.
+ *
+ * There is no explicit mute/unmute. So I set the radio frequency to a
+ * value where I do expect just noise and turn the speaker volume down.
+ * The frequency change is necessary since the card never seems to be
+ * completely silent.
+ */
+
+#include <linux/module.h>       /* Modules                        */
+#include <linux/init.h>         /* Initdata                       */
+#include <linux/ioport.h>       /* check_region, request_region   */
+#include <linux/proc_fs.h>      /* radio card status report       */
+#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_TYPHOON_*         */
+
+#define BANNER "Typhoon Radio Card driver v0.1\n"
+
+#ifndef CONFIG_RADIO_TYPHOON_PORT
+#define CONFIG_RADIO_TYPHOON_PORT -1
+#endif
+
+#ifndef CONFIG_RADIO_TYPHOON_MUTEFREQ
+#define CONFIG_RADIO_TYPHOON_MUTEFREQ 0
+#endif
+
+#ifndef CONFIG_PROC_FS
+#undef CONFIG_RADIO_TYPHOON_PROC_FS
+#endif
+
+struct typhoon_device {
+        int users;
+        int iobase;
+        int curvol;
+        int muted;
+        unsigned long curfreq;
+        unsigned long mutefreq;
+        struct semaphore lock;
+};
+
+static void typhoon_setvol_generic(struct typhoon_device *dev, int vol);
+static int typhoon_setfreq_generic(struct typhoon_device *dev,
+                                   unsigned long frequency);
+static int typhoon_setfreq(struct typhoon_device *dev, unsigned long frequency);
+static void typhoon_mute(struct typhoon_device *dev);
+static void typhoon_unmute(struct typhoon_device *dev);
+static int typhoon_setvol(struct typhoon_device *dev, int vol);
+static int typhoon_ioctl(struct inode *inode, struct file *file,
+                         unsigned int cmd, unsigned long arg);
+#ifdef CONFIG_RADIO_TYPHOON_PROC_FS
+static int typhoon_get_info(char *buf, char **start, off_t offset, int len);
+#endif
+
+static void typhoon_setvol_generic(struct typhoon_device *dev, int vol)
+{
+        down(&dev->lock);
+        vol >>= 14;                             /* Map 16 bit to 2 bit */
+        vol &= 3;
+        outb_p(vol / 2, dev->iobase);           /* Set the volume, high bit. */
+        outb_p(vol % 2, dev->iobase + 2);       /* Set the volume, low bit. */
+        up(&dev->lock);
+}
+
+static int typhoon_setfreq_generic(struct typhoon_device *dev,
+                                   unsigned long frequency)
+{
+        unsigned long outval;
+        unsigned long x;
+
+        /*
+         * The frequency transfer curve is not linear. The best fit I could
+         * get is
+         *
+         * outval = -155 + exp((f + 15.55) * 0.057))
+         *
+         * where frequency f is in MHz. Since we don't have exp in the kernel,
+         * I approximate this function by a third order polynomial.
+         *
+         */
+
+        down(&dev->lock);
+        x = frequency / 160;
+        outval = (x * x + 2500) / 5000;
+        outval = (outval * x + 5000) / 10000;
+        outval -= (10 * x * x + 10433) / 20866;
+        outval += 4 * x - 11505;
+
+        outb_p((outval >> 8) & 0x01, dev->iobase + 4);
+        outb_p(outval >> 9, dev->iobase + 6);
+        outb_p(outval & 0xff, dev->iobase + 8);
+        up(&dev->lock);
+
+        return 0;
+}
+
+static int typhoon_setfreq(struct typhoon_device *dev, unsigned long frequency)
+{
+        typhoon_setfreq_generic(dev, frequency);
+        dev->curfreq = frequency;
+        return 0;
+}
+
+static void typhoon_mute(struct typhoon_device *dev)
+{
+        if (dev->muted == 1)
+                return;
+        typhoon_setvol_generic(dev, 0);
+        typhoon_setfreq_generic(dev, dev->mutefreq);
+        dev->muted = 1;
+}
+
+static void typhoon_unmute(struct typhoon_device *dev)
+{
+        if (dev->muted == 0)
+                return;
+        typhoon_setfreq_generic(dev, dev->curfreq);
+        typhoon_setvol_generic(dev, dev->curvol);
+        dev->muted = 0;
+}
+
+static int typhoon_setvol(struct typhoon_device *dev, int vol)
+{
+        if (dev->muted && vol != 0) {   /* user is unmuting the card */
+                dev->curvol = vol;
+                typhoon_unmute(dev);
+                return 0;
+        }
+        if (vol == dev->curvol)         /* requested volume == current */
+                return 0;
+
+        if (vol == 0) {                 /* volume == 0 means mute the card */
+                typhoon_mute(dev);
+                dev->curvol = vol;
+                return 0;
+        }
+        typhoon_setvol_generic(dev, vol);
+        dev->curvol = vol;
+        return 0;
+}
+
+
+static int typhoon_do_ioctl(struct inode *inode, struct file *file,
+                            unsigned int cmd, void *arg)
+{
+        struct video_device *dev = video_devdata(file);
+        struct typhoon_device *typhoon = 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, "Typhoon Radio");
+                        return 0;
+                }
+        case VIDIOCGTUNER:
+                {
+                        struct video_tuner *v = arg;
+                        if (v->tuner)   /* Only 1 tuner */
+                                return -EINVAL;
+                        v->rangelow = 875 * 1600;
+                        v->rangehigh = 1080 * 1600;
+                        v->flags = VIDEO_TUNER_LOW;
+                        v->mode = VIDEO_MODE_AUTO;
+                        v->signal = 0xFFFF;     /* We can't get the signal strength */
+                        strcpy(v->name, "FM");
+                        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 = typhoon->curfreq;
+                return 0;
+        }
+        case VIDIOCSFREQ:
+        {
+                unsigned long *freq = arg;
+                typhoon->curfreq = *freq;
+                typhoon_setfreq(typhoon, typhoon->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 |= VIDEO_SOUND_MONO;
+                        v->volume = typhoon->curvol;
+                        v->step = 1 << 14;
+                        strcpy(v->name, "Typhoon Radio");
+                        return 0;
+                }
+        case VIDIOCSAUDIO:
+                {
+                        struct video_audio *v = arg;
+                        if (v->audio)
+                                return -EINVAL;
+                        if (v->flags & VIDEO_AUDIO_MUTE)
+                                typhoon_mute(typhoon);
+                        else
+                                typhoon_unmute(typhoon);
+                        if (v->flags & VIDEO_AUDIO_VOLUME)
+                                typhoon_setvol(typhoon, v->volume);
+                        return 0;
+                }
+        default:
+                return -ENOIOCTLCMD;
+        }
+}
+
+static int typhoon_ioctl(struct inode *inode, struct file *file,
+                         unsigned int cmd, unsigned long arg)
+{
+        return video_usercopy(inode, file, cmd, arg, typhoon_do_ioctl);
+}
+
+static struct typhoon_device typhoon_unit =
+{
+        .iobase         = CONFIG_RADIO_TYPHOON_PORT,
+        .curfreq        = CONFIG_RADIO_TYPHOON_MUTEFREQ,
+        .mutefreq       = CONFIG_RADIO_TYPHOON_MUTEFREQ,
+};
+
+static struct file_operations typhoon_fops = {
+        .owner          = THIS_MODULE,
+        .open           = video_exclusive_open,
+        .release        = video_exclusive_release,
+        .ioctl          = typhoon_ioctl,
+        .llseek         = no_llseek,
+};
+
+static struct video_device typhoon_radio =
+{
+        .owner          = THIS_MODULE,
+        .name           = "Typhoon Radio",
+        .type           = VID_TYPE_TUNER,
+        .hardware       = VID_HARDWARE_TYPHOON,
+        .fops           = &typhoon_fops,
+};
+
+#ifdef CONFIG_RADIO_TYPHOON_PROC_FS
+
+static int typhoon_get_info(char *buf, char **start, off_t offset, int len)
+{
+        char *out = buf;
+
+        #ifdef MODULE
+            #define MODULEPROCSTRING "Driver loaded as a module"
+        #else
+            #define MODULEPROCSTRING "Driver compiled into kernel"
+        #endif
+
+        /* output must be kept under PAGE_SIZE */
+        out += sprintf(out, BANNER);
+        out += sprintf(out, "Load type: " MODULEPROCSTRING "\n\n");
+        out += sprintf(out, "frequency = %lu kHz\n",
+                typhoon_unit.curfreq >> 4);
+        out += sprintf(out, "volume = %d\n", typhoon_unit.curvol);
+        out += sprintf(out, "mute = %s\n", typhoon_unit.muted ?
+                "on" : "off");
+        out += sprintf(out, "iobase = 0x%x\n", typhoon_unit.iobase);
+        out += sprintf(out, "mute frequency = %lu kHz\n",
+                typhoon_unit.mutefreq >> 4);
+        return out - buf;
+}
+
+#endif /* CONFIG_RADIO_TYPHOON_PROC_FS */
+
+MODULE_AUTHOR("Dr. Henrik Seidel");
+MODULE_DESCRIPTION("A driver for the Typhoon radio card (a.k.a. EcoRadio).");
+MODULE_LICENSE("GPL");
+
+static int io = -1;
+static int radio_nr = -1;
+
+module_param(io, int, 0);
+MODULE_PARM_DESC(io, "I/O address of the Typhoon card (0x316 or 0x336)");
+module_param(radio_nr, int, 0);
+
+#ifdef MODULE
+static unsigned long mutefreq = 0;
+module_param(mutefreq, ulong, 0);
+MODULE_PARM_DESC(mutefreq, "Frequency used when muting the card (in kHz)");
+#endif
+
+static int __init typhoon_init(void)
+{
+#ifdef MODULE
+        if (io == -1) {
+                printk(KERN_ERR "radio-typhoon: You must set an I/O address with io=0x316 or io=0x336\n");
+                return -EINVAL;
+        }
+        typhoon_unit.iobase = io;
+
+        if (mutefreq < 87000 || mutefreq > 108500) {
+                printk(KERN_ERR "radio-typhoon: You must set a frequency (in kHz) used when muting the card,\n");
+                printk(KERN_ERR "radio-typhoon: e.g. with \"mutefreq=87500\" (87000 <= mutefreq <= 108500)\n");
+                return -EINVAL;
+        }
+        typhoon_unit.mutefreq = mutefreq;
+#endif /* MODULE */
+
+        printk(KERN_INFO BANNER);
+        init_MUTEX(&typhoon_unit.lock);
+        io = typhoon_unit.iobase;
+        if (!request_region(io, 8, "typhoon")) {
+                printk(KERN_ERR "radio-typhoon: port 0x%x already in use\n",
+                       typhoon_unit.iobase);
+                return -EBUSY;
+        }
+
+        typhoon_radio.priv = &typhoon_unit;
+        if (video_register_device(&typhoon_radio, VFL_TYPE_RADIO, radio_nr) == -1)
+        {
+                release_region(io, 8);
+                return -EINVAL;
+        }
+        printk(KERN_INFO "radio-typhoon: port 0x%x.\n", typhoon_unit.iobase);
+        printk(KERN_INFO "radio-typhoon: mute frequency is %lu kHz.\n",
+               typhoon_unit.mutefreq);
+        typhoon_unit.mutefreq <<= 4;
+
+        /* mute card - prevents noisy bootups */
+        typhoon_mute(&typhoon_unit);
+
+#ifdef CONFIG_RADIO_TYPHOON_PROC_FS
+        if (!create_proc_info_entry("driver/radio-typhoon", 0, NULL,
+                                    typhoon_get_info)) 
+                printk(KERN_ERR "radio-typhoon: registering /proc/driver/radio-typhoon failed\n");
+#endif
+
+        return 0;
+}
+
+static void __exit typhoon_cleanup_module(void)
+{
+
+#ifdef CONFIG_RADIO_TYPHOON_PROC_FS
+        remove_proc_entry("driver/radio-typhoon", NULL);
+#endif
+
+        video_unregister_device(&typhoon_radio);
+        release_region(io, 8);
+}
+
+module_init(typhoon_init);
+module_exit(typhoon_cleanup_module);
+