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!

1 files changed, 264 insertions, 0 deletions

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);