patch-2.4.6 linux/drivers/media/radio/radio-miropcm20.c
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- Lines: 291
- Date:
Wed Dec 31 16:00:00 1969
- Orig file:
v2.4.5/linux/drivers/media/radio/radio-miropcm20.c
- Orig date:
Sat May 19 17:43:06 2001
diff -u --recursive --new-file v2.4.5/linux/drivers/media/radio/radio-miropcm20.c linux/drivers/media/radio/radio-miropcm20.c
@@ -1,290 +0,0 @@
-/* Miro PCM20 radio driver for Linux radio support
- * (c) 1998 Ruurd Reitsma <R.A.Reitsma@wbmt.tudelft.nl>
- * Thanks to Norberto Pellici for the ACI device interface specification
- * The API part is based on the radiotrack driver by M. Kirkwood
- * This driver relies on the aci mixer (drivers/sound/aci.c)
- * Look there for further info...
- */
-
-/* Revision history:
- *
- * 1998 Ruurd Reitsma <R.A.Reitsma@wbmt.tudelft.nl>
- * 2000-09-05 Robert Siemer <Robert.Siemer@gmx.de>
- * removed unfinished volume control (maybe adding it later again)
- * use OSS-mixer; added stereo control
- */
-
-/* What ever you think about the ACI, version 0x07 is not very well!
- * I cant get frequency, 'tuner status', 'tuner flags' or mute/mono
- * conditions... Robert
- */
-
-#include <linux/module.h>
-#include <linux/init.h>
-#include <linux/videodev.h>
-#include <linux/devfs_fs_kernel.h>
-#include <asm/uaccess.h>
-
-char * aci_radio_name;
-
-#include "../../sound/aci.h"
-
-static int users = 0;
-static int radio_nr = -1;
-MODULE_PARM(radio_nr, "i");
-
-struct pcm20_device
-{
- unsigned long freq;
- int muted;
- int stereo;
-};
-
-
-static int pcm20_mute(struct pcm20_device *dev, unsigned char mute)
-{
- dev->muted = mute;
- return aci_write_cmd(0xa3, mute);
-}
-
-static int pcm20_stereo(struct pcm20_device *dev, unsigned char stereo)
-{
- dev->stereo = stereo;
- return aci_write_cmd(0xa4, !stereo);
-}
-
-static int pcm20_setfreq(struct pcm20_device *dev, unsigned long freq)
-{
- unsigned char freql;
- unsigned char freqh;
-
- dev->freq=freq;
-
- freq /= 160;
- if (!(aci_version==0x07 || aci_version>=0xb0))
- freq /= 10; /* I don't know exactly which version
- * needs this hack */
- freql = freq & 0xff;
- freqh = freq >> 8;
-
- aci_rds_cmd(RDS_RESET, 0, 0);
- pcm20_stereo(dev, 1);
-
- return aci_rw_cmd(0xa7, freql, freqh); /* Tune to frequency */
-}
-
-static int pcm20_getflags(struct pcm20_device *dev, __u32 *flags, __u16 *signal)
-{
- /* okay, check for signal, stereo and rds here... */
- int i;
- unsigned char buf;
-
- if ((i=aci_rw_cmd(0xa9, -1, -1))<0)
- return i;
-#if DEBUG
- printk("check_sig: 0x%x\n", i);
-#endif
- if (i & 0x80) {
- /* no signal from tuner */
- *flags=0;
- *signal=0;
- return 0;
- } else
- *signal=0xffff;
-
- if ((i=aci_rw_cmd(0xa8, -1, -1))<0)
- return i;
- if (i & 0x40) {
- *flags=0;
- } else {
- /* stereo */
- *flags=VIDEO_TUNER_STEREO_ON;
- /* I cant see stereo, when forced to mono */
- dev->stereo=1;
- }
-
- if ((i=aci_rds_cmd(RDS_STATUS, &buf, 1))<0)
- return i;
- if (buf & 1)
- /* RDS available */
- *flags|=VIDEO_TUNER_RDS_ON;
- else
- return 0;
-
- if ((i=aci_rds_cmd(RDS_RXVALUE, &buf, 1))<0)
- return i;
-#if DEBUG
- printk("rds-signal: %d\n", buf);
-#endif
- if (buf > 15) {
- printk("rds-miropcm20: RX strengths unexpected high...\n");
- buf=15;
- }
- /* refine signal */
- if ((*signal=SCALE(15, 0xffff, buf))==0)
- *signal = 1;
-
- return 0;
-}
-
-static int pcm20_ioctl(struct video_device *dev, unsigned int cmd, void *arg)
-{
- struct pcm20_device *pcm20=dev->priv;
- int i;
-
- switch(cmd)
- {
- case VIDIOCGCAP:
- {
- struct video_capability v;
- v.type=VID_TYPE_TUNER;
- strcpy(v.name, "Miro PCM20");
- v.channels=1;
- v.audios=1;
- /* No we don't do pictures */
- v.maxwidth=0;
- v.maxheight=0;
- v.minwidth=0;
- v.minheight=0;
- 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))!=0)
- return -EFAULT;
- if(v.tuner) /* Only 1 tuner */
- return -EINVAL;
- v.rangelow=87*16000;
- v.rangehigh=108*16000;
- pcm20_getflags(pcm20, &v.flags, &v.signal);
- v.flags|=VIDEO_TUNER_LOW;
- v.mode=VIDEO_MODE_AUTO;
- strcpy(v.name, "FM");
- 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, &pcm20->freq, sizeof(pcm20->freq)))
- return -EFAULT;
- return 0;
- case VIDIOCSFREQ:
- if(copy_from_user(&pcm20->freq, arg, sizeof(pcm20->freq)))
- return -EFAULT;
- i=pcm20_setfreq(pcm20, pcm20->freq);
-#if DEBUG
- printk("First view (setfreq): 0x%x\n", i);
-#endif
- return i;
- case VIDIOCGAUDIO:
- {
- struct video_audio v;
- memset(&v,0, sizeof(v));
- v.flags=VIDEO_AUDIO_MUTABLE;
- if (pcm20->muted)
- v.flags|=VIDEO_AUDIO_MUTE;
- v.mode=VIDEO_SOUND_STEREO;
- if (pcm20->stereo)
- v.mode|=VIDEO_SOUND_MONO;
- /* v.step=2048; */
- strcpy(v.name, "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;
-
- pcm20_mute(pcm20, !!(v.flags&VIDEO_AUDIO_MUTE));
- if(v.flags&VIDEO_SOUND_MONO)
- pcm20_stereo(pcm20, 0);
- if(v.flags&VIDEO_SOUND_STEREO)
- pcm20_stereo(pcm20, 1);
-
- return 0;
- }
- default:
- return -ENOIOCTLCMD;
- }
-}
-
-static int pcm20_open(struct video_device *dev, int flags)
-{
- if(users)
- return -EBUSY;
- users++;
- return 0;
-}
-
-static void pcm20_close(struct video_device *dev)
-{
- users--;
-}
-
-static struct pcm20_device pcm20_unit=
-{
- freq: 87*16000,
- muted: 1,
- stereo: 0
-};
-
-static struct video_device pcm20_radio=
-{
- owner: THIS_MODULE,
- name: "Miro PCM 20 radio",
- type: VID_TYPE_TUNER,
- hardware: VID_HARDWARE_RTRACK,
- open: pcm20_open,
- close: pcm20_close,
- ioctl: pcm20_ioctl,
- priv: &pcm20_unit
-};
-
-static int __init pcm20_init(void)
-{
- if(video_register_device(&pcm20_radio, VFL_TYPE_RADIO, radio_nr)==-1)
- return -EINVAL;
-
- if(attach_aci_rds()<0) {
- video_unregister_device(&pcm20_radio);
- return -EINVAL;
- }
-#if DEBUG
- printk("v4l-name: %s\n", devfs_get_name(pcm20_radio.devfs_handle, 0));
-#endif
- printk(KERN_INFO "Miro PCM20 radio card driver.\n");
-
- return 0;
-}
-
-MODULE_AUTHOR("Ruurd Reitsma");
-MODULE_DESCRIPTION("A driver for the Miro PCM20 radio card.");
-
-EXPORT_NO_SYMBOLS;
-
-static void __exit pcm20_cleanup(void)
-{
- unload_aci_rds();
- video_unregister_device(&pcm20_radio);
-}
-
-module_init(pcm20_init);
-module_exit(pcm20_cleanup);
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