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!
diff --git a/drivers/media/radio/miropcm20-radio.c b/drivers/media/radio/miropcm20-radio.c
new file mode 100644
index 0000000..c2ebe87
--- /dev/null
+++ b/drivers/media/radio/miropcm20-radio.c
@@ -0,0 +1,264 @@
+/* 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 can't get frequency, 'tuner status', 'tuner flags' or mute/mono
+ * conditions... Robert
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/videodev.h>
+#include "../../../sound/oss/aci.h"
+#include "miropcm20-rds-core.h"
+
+static int radio_nr = -1;
+module_param(radio_nr, int, 0);
+
+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(ACI_SET_TUNERMUTE, mute);
+}
+
+static int pcm20_stereo(struct pcm20_device *dev, unsigned char stereo)
+{
+ dev->stereo = stereo;
+ return aci_write_cmd(ACI_SET_TUNERMONO, !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, NULL, 0);
+ pcm20_stereo(dev, 1);
+
+ return aci_rw_cmd(ACI_WRITE_TUNE, freql, freqh);
+}
+
+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(ACI_READ_TUNERSTATION, -1, -1))<0)
+ return i;
+ pr_debug("check_sig: 0x%x\n", i);
+ if (i & 0x80) {
+ /* no signal from tuner */
+ *flags=0;
+ *signal=0;
+ return 0;
+ } else
+ *signal=0xffff;
+
+ if ((i=aci_rw_cmd(ACI_READ_TUNERSTEREO, -1, -1))<0)
+ return i;
+ if (i & 0x40) {
+ *flags=0;
+ } else {
+ /* stereo */
+ *flags=VIDEO_TUNER_STEREO_ON;
+ /* I can't 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;
+ pr_debug("rds-signal: %d\n", buf);
+ if (buf > 15) {
+ printk("miropcm20-radio: RX strengths unexpected high...\n");
+ buf=15;
+ }
+ /* refine signal */
+ if ((*signal=SCALE(15, 0xffff, buf))==0)
+ *signal = 1;
+
+ return 0;
+}
+
+static int pcm20_do_ioctl(struct inode *inode, struct file *file,
+ unsigned int cmd, void *arg)
+{
+ struct video_device *dev = video_devdata(file);
+ struct pcm20_device *pcm20 = dev->priv;
+ int i;
+
+ switch(cmd)
+ {
+ case VIDIOCGCAP:
+ {
+ struct video_capability *v = arg;
+ memset(v,0,sizeof(*v));
+ v->type=VID_TYPE_TUNER;
+ strcpy(v->name, "Miro PCM20");
+ v->channels=1;
+ v->audios=1;
+ return 0;
+ }
+ case VIDIOCGTUNER:
+ {
+ struct video_tuner *v = arg;
+ 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");
+ 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 = pcm20->freq;
+ return 0;
+ }
+ case VIDIOCSFREQ:
+ {
+ unsigned long *freq = arg;
+ pcm20->freq = *freq;
+ i=pcm20_setfreq(pcm20, pcm20->freq);
+ pr_debug("First view (setfreq): 0x%x\n", i);
+ return i;
+ }
+ case VIDIOCGAUDIO:
+ {
+ struct video_audio *v = arg;
+ 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");
+ return 0;
+ }
+ case VIDIOCSAUDIO:
+ {
+ struct video_audio *v = arg;
+ 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_ioctl(struct inode *inode, struct file *file,
+ unsigned int cmd, unsigned long arg)
+{
+ return video_usercopy(inode, file, cmd, arg, pcm20_do_ioctl);
+}
+
+static struct pcm20_device pcm20_unit = {
+ .freq = 87*16000,
+ .muted = 1,
+};
+
+static struct file_operations pcm20_fops = {
+ .owner = THIS_MODULE,
+ .open = video_exclusive_open,
+ .release = video_exclusive_release,
+ .ioctl = pcm20_ioctl,
+ .llseek = no_llseek,
+};
+
+static struct video_device pcm20_radio = {
+ .owner = THIS_MODULE,
+ .name = "Miro PCM 20 radio",
+ .type = VID_TYPE_TUNER,
+ .hardware = VID_HARDWARE_RTRACK,
+ .fops = &pcm20_fops,
+ .priv = &pcm20_unit
+};
+
+static int __init pcm20_init(void)
+{
+ if(video_register_device(&pcm20_radio, VFL_TYPE_RADIO, radio_nr)==-1)
+ goto video_register_device;
+
+ if(attach_aci_rds()<0)
+ goto attach_aci_rds;
+
+ printk(KERN_INFO "Miro PCM20 radio card driver.\n");
+
+ return 0;
+
+ attach_aci_rds:
+ video_unregister_device(&pcm20_radio);
+ video_register_device:
+ return -EINVAL;
+}
+
+MODULE_AUTHOR("Ruurd Reitsma");
+MODULE_DESCRIPTION("A driver for the Miro PCM20 radio card.");
+MODULE_LICENSE("GPL");
+
+static void __exit pcm20_cleanup(void)
+{
+ unload_aci_rds();
+ video_unregister_device(&pcm20_radio);
+}
+
+module_init(pcm20_init);
+module_exit(pcm20_cleanup);