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Diffstat (limited to 'drivers/char/radio-zoltrix.c')
-rw-r--r--drivers/char/radio-zoltrix.c412
1 files changed, 0 insertions, 412 deletions
diff --git a/drivers/char/radio-zoltrix.c b/drivers/char/radio-zoltrix.c
deleted file mode 100644
index dd688935a..000000000
--- a/drivers/char/radio-zoltrix.c
+++ /dev/null
@@ -1,412 +0,0 @@
-/* zoltrix radio plus driver for Linux radio support
- * (c) 1998 C. van Schaik <carl@leg.uct.ac.za>
- *
- * BUGS
- * Due to the inconsistancy 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
- */
-
-#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_ZOLTRIX_PORT */
-
-#ifndef CONFIG_RADIO_ZOLTRIX_PORT
-#define CONFIG_RADIO_ZOLTRIX_PORT -1
-#endif
-
-static int io = CONFIG_RADIO_ZOLTRIX_PORT;
-static int users = 0;
-
-struct zol_device {
- int port;
- int curvol;
- unsigned long curfreq;
- int muted;
- unsigned int stereo;
- struct semaphore lock;
-};
-
-
-/* local things */
-
-static void sleep_delay(void)
-{
- /* Sleep nicely for +/- 10 mS */
- schedule();
-}
-
-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);
- sleep_delay();
- 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 */
-
-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);
- sleep_delay();
- sleep_delay();
-
- a = inb(io);
- sleep_delay();
- 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);
-}
-
-int zol_is_stereo (struct zol_device *dev)
-{
- int x1, x2;
-
- down(&dev->lock);
-
- outb(0x00, io);
- outb(dev->curvol, io);
- sleep_delay();
- sleep_delay();
-
- x1 = inb(io);
- sleep_delay();
- x2 = inb(io);
-
- up(&dev->lock);
-
- if ((x1 == x2) && (x1 == 0xcf))
- return 1;
- return 0;
-}
-
-static int zol_ioctl(struct video_device *dev, unsigned int cmd, void *arg)
-{
- struct zol_device *zol = dev->priv;
-
- switch (cmd) {
- case VIDIOCGCAP:
- {
- struct video_capability v;
- v.type = VID_TYPE_TUNER;
- v.channels = 1 + zol->stereo;
- v.audios = 1;
- /* No we don't do pictures */
- v.maxwidth = 0;
- v.maxheight = 0;
- v.minwidth = 0;
- v.minheight = 0;
- strcpy(v.name, "Zoltrix Radio");
- if (copy_to_user(arg, &v, sizeof(v)))
- return -EFAULT;
- return 0;
- }
- case VIDIOCGTUNER:
- {
- struct video_tuner v;
- if (copy_from_user(&v, arg, sizeof(v)))
- return -EFAULT;
- 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);
- if (copy_to_user(arg, &v, sizeof(v)))
- return -EFAULT;
- return 0;
- }
- case VIDIOCSTUNER:
- {
- struct video_tuner v;
- if (copy_from_user(&v, arg, sizeof(v)))
- return -EFAULT;
- if (v.tuner != 0)
- return -EINVAL;
- /* Only 1 tuner so no setting needed ! */
- return 0;
- }
- case VIDIOCGFREQ:
- if (copy_to_user(arg, &zol->curfreq, sizeof(zol->curfreq)))
- return -EFAULT;
- return 0;
- case VIDIOCSFREQ:
- if (copy_from_user(&zol->curfreq, arg, sizeof(zol->curfreq)))
- return -EFAULT;
- zol_setfreq(zol, zol->curfreq);
- return 0;
- case VIDIOCGAUDIO:
- {
- struct video_audio v;
- 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");
- if (copy_to_user(arg, &v, sizeof(v)))
- return -EFAULT;
- return 0;
- }
- case VIDIOCSAUDIO:
- {
- struct video_audio v;
- if (copy_from_user(&v, arg, sizeof(v)))
- return -EFAULT;
- 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_open(struct video_device *dev, int flags)
-{
- if (users)
- return -EBUSY;
- users++;
- MOD_INC_USE_COUNT;
- return 0;
-}
-
-static void zol_close(struct video_device *dev)
-{
- users--;
- MOD_DEC_USE_COUNT;
-}
-
-static struct zol_device zoltrix_unit;
-
-static struct video_device zoltrix_radio =
-{
- "Zoltrix Radio Plus",
- VID_TYPE_TUNER,
- VID_HARDWARE_ZOLTRIX,
- zol_open,
- zol_close,
- NULL, /* Can't read (no capture ability) */
- NULL, /* Can't write */
- NULL,
- zol_ioctl,
- NULL,
- NULL
-};
-
-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 (check_region(io, 2)) {
- printk(KERN_ERR "zoltrix: port 0x%x already in use\n", io);
- return -EBUSY;
- }
- if ((io != 0x20c) && (io != 0x30c)) {
- printk(KERN_ERR "zoltrix: invalid port, try 0x20c or 0x30c\n");
- return -ENXIO;
- }
- zoltrix_radio.priv = &zoltrix_unit;
-
- if (video_register_device(&zoltrix_radio, VFL_TYPE_RADIO) == -1)
- return -EINVAL;
-
- request_region(io, 2, "zoltrix");
- 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);
- sleep_delay();
- sleep_delay();
- 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_PARM(io, "i");
-MODULE_PARM_DESC(io, "I/O address of the Zoltrix Radio Plus (0x20c or 0x30c)");
-
-EXPORT_NO_SYMBOLS;
-
-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);
-
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