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, 315 insertions, 0 deletions

diff --git a/drivers/media/radio/radio-aztech.c b/drivers/media/radio/radio-aztech.c
new file mode 100644
index 000000000000..013c835ed910
--- /dev/null
+++ b/drivers/media/radio/radio-aztech.c
@@ -0,0 +1,315 @@
+/* radio-aztech.c - Aztech radio card driver for Linux 2.2 
+ *
+ * Adapted to support the Video for Linux API by 
+ * Russell Kroll <rkroll@exploits.org>.  Based on original tuner code by:
+ *
+ * Quay Ly
+ * Donald Song
+ * Jason Lewis      (jlewis@twilight.vtc.vsc.edu) 
+ * Scott McGrath    (smcgrath@twilight.vtc.vsc.edu)
+ * William McGrath  (wmcgrath@twilight.vtc.vsc.edu)
+ *
+ * The basis for this code may be found at http://bigbang.vtc.vsc.edu/fmradio/
+ * along with more information on the card itself.
+ *
+ * History:
+ * 1999-02-24	Russell Kroll <rkroll@exploits.org>
+ *		Fine tuning/VIDEO_TUNER_LOW
+ * 		Range expanded to 87-108 MHz (from 87.9-107.8)
+ *
+ * Notable changes from the original source:
+ * - includes stripped down to the essentials
+ * - for loops used as delays replaced with udelay()
+ * - #defines removed, changed to static values
+ * - tuning structure changed - no more character arrays, other changes
+*/
+
+#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_AZTECH_PORT 	*/
+
+/* acceptable ports: 0x350 (JP3 shorted), 0x358 (JP3 open) */
+
+#ifndef CONFIG_RADIO_AZTECH_PORT
+#define CONFIG_RADIO_AZTECH_PORT -1
+#endif
+
+static int io = CONFIG_RADIO_AZTECH_PORT; 
+static int radio_nr = -1;
+static int radio_wait_time = 1000;
+static struct semaphore lock;
+
+struct az_device
+{
+	int curvol;
+	unsigned long curfreq;
+	int stereo;
+};
+
+static int volconvert(int level)
+{
+	level>>=14;	 	/* Map 16bits down to 2 bit */
+ 	level&=3;
+	
+	/* convert to card-friendly values */
+	switch (level) 
+	{
+		case 0: 
+			return 0;
+		case 1: 
+			return 1;
+		case 2:
+			return 4;
+		case 3:
+			return 5;
+	}
+	return 0;	/* Quieten gcc */
+}
+
+static void send_0_byte (struct az_device *dev)
+{
+	udelay(radio_wait_time);
+	outb_p(2+volconvert(dev->curvol), io);
+	outb_p(64+2+volconvert(dev->curvol), io);
+}
+
+static void send_1_byte (struct az_device *dev)
+{
+	udelay (radio_wait_time);
+	outb_p(128+2+volconvert(dev->curvol), io);
+	outb_p(128+64+2+volconvert(dev->curvol), io);
+}
+
+static int az_setvol(struct az_device *dev, int vol)
+{
+	down(&lock);
+	outb (volconvert(vol), io);
+	up(&lock);
+	return 0;
+}
+
+/* thanks to Michael Dwyer for giving me a dose of clues in
+ * the signal strength department..
+ *
+ * This card has a stereo bit - bit 0 set = mono, not set = stereo
+ * It also has a "signal" bit - bit 1 set = bad signal, not set = good
+ *
+ */
+
+static int az_getsigstr(struct az_device *dev)
+{
+	if (inb(io) & 2)	/* bit set = no signal present */
+		return 0;
+	return 1;		/* signal present */
+}
+
+static int az_getstereo(struct az_device *dev)
+{
+	if (inb(io) & 1) 	/* bit set = mono */
+		return 0;
+	return 1;		/* stereo */
+}
+
+static int az_setfreq(struct az_device *dev, unsigned long frequency)
+{
+	int  i;
+
+	frequency += 171200;		/* Add 10.7 MHz IF		*/
+	frequency /= 800;		/* Convert to 50 kHz units	*/
+					
+	down(&lock);
+	
+	send_0_byte (dev);		/*  0: LSB of frequency       */
+
+	for (i = 0; i < 13; i++)	/*   : frequency bits (1-13)  */
+		if (frequency & (1 << i))
+			send_1_byte (dev);
+		else
+			send_0_byte (dev);
+
+	send_0_byte (dev);		/* 14: test bit - always 0    */
+	send_0_byte (dev);		/* 15: test bit - always 0    */
+	send_0_byte (dev);		/* 16: band data 0 - always 0 */
+	if (dev->stereo)		/* 17: stereo (1 to enable)   */
+		send_1_byte (dev);
+	else
+		send_0_byte (dev);
+
+	send_1_byte (dev);		/* 18: band data 1 - unknown  */
+	send_0_byte (dev);		/* 19: time base - always 0   */
+	send_0_byte (dev);		/* 20: spacing (0 = 25 kHz)   */
+	send_1_byte (dev);		/* 21: spacing (1 = 25 kHz)   */
+	send_0_byte (dev);		/* 22: spacing (0 = 25 kHz)   */
+	send_1_byte (dev);		/* 23: AM/FM (FM = 1, always) */
+
+	/* latch frequency */
+
+	udelay (radio_wait_time);
+	outb_p(128+64+volconvert(dev->curvol), io);
+	
+	up(&lock);
+
+	return 0;
+}
+
+static int az_do_ioctl(struct inode *inode, struct file *file,
+		       unsigned int cmd, void *arg)
+{
+	struct video_device *dev = video_devdata(file);
+	struct az_device *az = 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, "Aztech Radio");
+			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);
+			v->flags=VIDEO_TUNER_LOW;
+			v->mode=VIDEO_MODE_AUTO;
+			v->signal=0xFFFF*az_getsigstr(az);
+			if(az_getstereo(az))
+				v->flags|=VIDEO_TUNER_STEREO_ON;
+			strcpy(v->name, "FM");
+			return 0;
+		}
+		case VIDIOCSTUNER:
+		{
+			struct video_tuner *v = arg;
+			if(v->tuner!=0)
+				return -EINVAL;
+			return 0;
+		}
+		case VIDIOCGFREQ:
+		{
+			unsigned long *freq = arg;
+			*freq = az->curfreq;
+			return 0;
+		}
+		case VIDIOCSFREQ:
+		{
+			unsigned long *freq = arg;
+			az->curfreq = *freq;
+			az_setfreq(az, az->curfreq);
+			return 0;
+		}
+		case VIDIOCGAUDIO:
+		{	
+			struct video_audio *v = arg;
+			memset(v,0, sizeof(*v));
+			v->flags|=VIDEO_AUDIO_MUTABLE|VIDEO_AUDIO_VOLUME;
+			if(az->stereo)
+				v->mode=VIDEO_SOUND_STEREO;
+			else
+				v->mode=VIDEO_SOUND_MONO;
+			v->volume=az->curvol;
+			v->step=16384;
+			strcpy(v->name, "Radio");
+			return 0;			
+		}
+		case VIDIOCSAUDIO:
+		{
+			struct video_audio *v = arg;
+			if(v->audio) 
+				return -EINVAL;
+			az->curvol=v->volume;
+
+			az->stereo=(v->mode&VIDEO_SOUND_STEREO)?1:0;
+			if(v->flags&VIDEO_AUDIO_MUTE) 
+				az_setvol(az,0);
+			else
+				az_setvol(az,az->curvol);
+			return 0;
+		}
+		default:
+			return -ENOIOCTLCMD;
+	}
+}
+
+static int az_ioctl(struct inode *inode, struct file *file,
+		    unsigned int cmd, unsigned long arg)
+{
+	return video_usercopy(inode, file, cmd, arg, az_do_ioctl);
+}
+
+static struct az_device aztech_unit;
+
+static struct file_operations aztech_fops = {
+	.owner		= THIS_MODULE,
+	.open           = video_exclusive_open,
+	.release        = video_exclusive_release,
+	.ioctl		= az_ioctl,
+	.llseek         = no_llseek,
+};
+
+static struct video_device aztech_radio=
+{
+	.owner		= THIS_MODULE,
+	.name		= "Aztech radio",
+	.type		= VID_TYPE_TUNER,
+	.hardware	= VID_HARDWARE_AZTECH,
+	.fops           = &aztech_fops,
+};
+
+static int __init aztech_init(void)
+{
+	if(io==-1)
+	{
+		printk(KERN_ERR "You must set an I/O address with io=0x???\n");
+		return -EINVAL;
+	}
+
+	if (!request_region(io, 2, "aztech")) 
+	{
+		printk(KERN_ERR "aztech: port 0x%x already in use\n", io);
+		return -EBUSY;
+	}
+
+	init_MUTEX(&lock);
+	aztech_radio.priv=&aztech_unit;
+	
+	if(video_register_device(&aztech_radio, VFL_TYPE_RADIO, radio_nr)==-1)
+	{
+		release_region(io,2);
+		return -EINVAL;
+	}
+		
+	printk(KERN_INFO "Aztech radio card driver v1.00/19990224 rkroll@exploits.org\n");
+	/* mute card - prevents noisy bootups */
+	outb (0, io);
+	return 0;
+}
+
+MODULE_AUTHOR("Russell Kroll, Quay Lu, Donald Song, Jason Lewis, Scott McGrath, William McGrath");
+MODULE_DESCRIPTION("A driver for the Aztech radio card.");
+MODULE_LICENSE("GPL");
+
+module_param(io, int, 0);
+module_param(radio_nr, int, 0);
+MODULE_PARM_DESC(io, "I/O address of the Aztech card (0x350 or 0x358)");
+
+static void __exit aztech_cleanup(void)
+{
+	video_unregister_device(&aztech_radio);
+	release_region(io,2);
+}
+
+module_init(aztech_init);
+module_exit(aztech_cleanup);