Initial import of modified Linux 2.6.28 tree

Original upstream URL:
git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git | branch linux-2.6.28.y

1 files changed, 448 insertions, 0 deletions

diff --git a/drivers/media/radio/radio-terratec.c b/drivers/media/radio/radio-terratec.c
new file mode 100644
index 0000000..0abb186
--- /dev/null
+++ b/drivers/media/radio/radio-terratec.c
@@ -0,0 +1,448 @@
+/* Terratec ActiveRadio ISA Standalone card driver for Linux radio support
+ * (c) 1999 R. Offermanns (rolf@offermanns.de)
+ * based on the aimslab radio driver from M. Kirkwood
+ * many thanks to Michael Becker and Friedhelm Birth (from TerraTec)
+ *
+ *
+ * History:
+ * 1999-05-21	First preview release
+ *
+ *  Notes on the hardware:
+ *  There are two "main" chips on the card:
+ *  - Philips OM5610 (http://www-us.semiconductors.philips.com/acrobat/datasheets/OM5610_2.pdf)
+ *  - Philips SAA6588 (http://www-us.semiconductors.philips.com/acrobat/datasheets/SAA6588_1.pdf)
+ *  (you can get the datasheet at the above links)
+ *
+ *  Frequency control is done digitally -- ie out(port,encodefreq(95.8));
+ *  Volume Control is done digitally
+ *
+ *  there is a I2C controlled RDS decoder (SAA6588)  onboard, which i would like to support someday
+ *  (as soon i have understand how to get started :)
+ *  If you can help me out with that, please contact me!!
+ *
+ *
+ * Converted to V4L2 API by Mauro Carvalho Chehab <mchehab@infradead.org>
+ */
+
+#include <linux/module.h>	/* Modules 			*/
+#include <linux/init.h>		/* Initdata			*/
+#include <linux/ioport.h>	/* request_region		*/
+#include <linux/delay.h>	/* udelay			*/
+#include <asm/io.h>		/* outb, outb_p			*/
+#include <asm/uaccess.h>	/* copy to/from user		*/
+#include <linux/videodev2.h>	/* kernel radio structs		*/
+#include <media/v4l2-common.h>
+#include <media/v4l2-ioctl.h>
+#include <linux/spinlock.h>
+
+#include <linux/version.h>      /* for KERNEL_VERSION MACRO     */
+#define RADIO_VERSION KERNEL_VERSION(0,0,2)
+
+static struct v4l2_queryctrl radio_qctrl[] = {
+	{
+		.id            = V4L2_CID_AUDIO_MUTE,
+		.name          = "Mute",
+		.minimum       = 0,
+		.maximum       = 1,
+		.default_value = 1,
+		.type          = V4L2_CTRL_TYPE_BOOLEAN,
+	},{
+		.id            = V4L2_CID_AUDIO_VOLUME,
+		.name          = "Volume",
+		.minimum       = 0,
+		.maximum       = 0xff,
+		.step          = 1,
+		.default_value = 0xff,
+		.type          = V4L2_CTRL_TYPE_INTEGER,
+	}
+};
+
+#ifndef CONFIG_RADIO_TERRATEC_PORT
+#define CONFIG_RADIO_TERRATEC_PORT 0x590
+#endif
+
+/**************** this ones are for the terratec *******************/
+#define BASEPORT 	0x590
+#define VOLPORT 	0x591
+#define WRT_DIS 	0x00
+#define CLK_OFF		0x00
+#define IIC_DATA	0x01
+#define IIC_CLK		0x02
+#define DATA		0x04
+#define CLK_ON 		0x08
+#define WRT_EN		0x10
+/*******************************************************************/
+
+static int io = CONFIG_RADIO_TERRATEC_PORT;
+static int radio_nr = -1;
+static spinlock_t lock;
+
+struct tt_device
+{
+	unsigned long in_use;
+	int port;
+	int curvol;
+	unsigned long curfreq;
+	int muted;
+};
+
+
+/* local things */
+
+static void cardWriteVol(int volume)
+{
+	int i;
+	volume = volume+(volume * 32); // change both channels
+	spin_lock(&lock);
+	for (i=0;i<8;i++)
+	{
+		if (volume & (0x80>>i))
+			outb(0x80, VOLPORT);
+		else outb(0x00, VOLPORT);
+	}
+	spin_unlock(&lock);
+}
+
+
+
+static void tt_mute(struct tt_device *dev)
+{
+	dev->muted = 1;
+	cardWriteVol(0);
+}
+
+static int tt_setvol(struct tt_device *dev, int vol)
+{
+
+//	printk(KERN_ERR "setvol called, vol = %d\n", vol);
+
+	if(vol == dev->curvol) {	/* requested volume = current */
+		if (dev->muted) {	/* user is unmuting the card  */
+			dev->muted = 0;
+			cardWriteVol(vol);	/* enable card */
+		}
+
+		return 0;
+	}
+
+	if(vol == 0) {			/* volume = 0 means mute the card */
+		cardWriteVol(0);	/* "turn off card" by setting vol to 0 */
+		dev->curvol = vol;	/* track the volume state!	*/
+		return 0;
+	}
+
+	dev->muted = 0;
+
+	cardWriteVol(vol);
+
+	dev->curvol = vol;
+
+	return 0;
+
+}
+
+
+/* this is the worst part in this driver */
+/* many more or less strange things are going on here, but hey, it works :) */
+
+static int tt_setfreq(struct tt_device *dev, unsigned long freq1)
+{
+	int freq;
+	int i;
+	int p;
+	int  temp;
+	long rest;
+
+	unsigned char buffer[25];		/* we have to bit shift 25 registers */
+	freq = freq1/160;			/* convert the freq. to a nice to handle value */
+	for(i=24;i>-1;i--)
+		buffer[i]=0;
+
+	rest = freq*10+10700;		/* i once had understood what is going on here */
+					/* maybe some wise guy (friedhelm?) can comment this stuff */
+	i=13;
+	p=10;
+	temp=102400;
+	while (rest!=0)
+	{
+		if (rest%temp  == rest)
+			buffer[i] = 0;
+		else
+		{
+			buffer[i] = 1;
+			rest = rest-temp;
+		}
+		i--;
+		p--;
+		temp = temp/2;
+	}
+
+	spin_lock(&lock);
+
+	for (i=24;i>-1;i--)			/* bit shift the values to the radiocard */
+	{
+		if (buffer[i]==1)
+		{
+			outb(WRT_EN|DATA, BASEPORT);
+			outb(WRT_EN|DATA|CLK_ON  , BASEPORT);
+			outb(WRT_EN|DATA, BASEPORT);
+		}
+		else
+		{
+			outb(WRT_EN|0x00, BASEPORT);
+			outb(WRT_EN|0x00|CLK_ON  , BASEPORT);
+		}
+	}
+	outb(0x00, BASEPORT);
+
+	spin_unlock(&lock);
+
+	return 0;
+}
+
+static int tt_getsigstr(struct tt_device *dev)		/* TODO */
+{
+	if (inb(io) & 2)	/* bit set = no signal present	*/
+		return 0;
+	return 1;		/* signal present		*/
+}
+
+static int vidioc_querycap(struct file *file, void *priv,
+					struct v4l2_capability *v)
+{
+	strlcpy(v->driver, "radio-terratec", sizeof(v->driver));
+	strlcpy(v->card, "ActiveRadio", sizeof(v->card));
+	sprintf(v->bus_info, "ISA");
+	v->version = RADIO_VERSION;
+	v->capabilities = V4L2_CAP_TUNER;
+	return 0;
+}
+
+static int vidioc_g_tuner(struct file *file, void *priv,
+					struct v4l2_tuner *v)
+{
+	struct tt_device *tt = video_drvdata(file);
+
+	if (v->index > 0)
+		return -EINVAL;
+
+	strcpy(v->name, "FM");
+	v->type = V4L2_TUNER_RADIO;
+	v->rangelow = (87*16000);
+	v->rangehigh = (108*16000);
+	v->rxsubchans = V4L2_TUNER_SUB_MONO;
+	v->capability = V4L2_TUNER_CAP_LOW;
+	v->audmode = V4L2_TUNER_MODE_MONO;
+	v->signal = 0xFFFF*tt_getsigstr(tt);
+	return 0;
+}
+
+static int vidioc_s_tuner(struct file *file, void *priv,
+					struct v4l2_tuner *v)
+{
+	if (v->index > 0)
+		return -EINVAL;
+	return 0;
+}
+
+static int vidioc_s_frequency(struct file *file, void *priv,
+					struct v4l2_frequency *f)
+{
+	struct tt_device *tt = video_drvdata(file);
+
+	tt->curfreq = f->frequency;
+	tt_setfreq(tt, tt->curfreq);
+	return 0;
+}
+
+static int vidioc_g_frequency(struct file *file, void *priv,
+					struct v4l2_frequency *f)
+{
+	struct tt_device *tt = video_drvdata(file);
+
+	f->type = V4L2_TUNER_RADIO;
+	f->frequency = tt->curfreq;
+	return 0;
+}
+
+static int vidioc_queryctrl(struct file *file, void *priv,
+					struct v4l2_queryctrl *qc)
+{
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(radio_qctrl); i++) {
+		if (qc->id && qc->id == radio_qctrl[i].id) {
+			memcpy(qc, &(radio_qctrl[i]),
+						sizeof(*qc));
+			return 0;
+		}
+	}
+	return -EINVAL;
+}
+
+static int vidioc_g_ctrl(struct file *file, void *priv,
+					struct v4l2_control *ctrl)
+{
+	struct tt_device *tt = video_drvdata(file);
+
+	switch (ctrl->id) {
+	case V4L2_CID_AUDIO_MUTE:
+		if (tt->muted)
+			ctrl->value = 1;
+		else
+			ctrl->value = 0;
+		return 0;
+	case V4L2_CID_AUDIO_VOLUME:
+		ctrl->value = tt->curvol * 6554;
+		return 0;
+	}
+	return -EINVAL;
+}
+
+static int vidioc_s_ctrl(struct file *file, void *priv,
+					struct v4l2_control *ctrl)
+{
+	struct tt_device *tt = video_drvdata(file);
+
+	switch (ctrl->id) {
+	case V4L2_CID_AUDIO_MUTE:
+		if (ctrl->value)
+			tt_mute(tt);
+		else
+			tt_setvol(tt,tt->curvol);
+		return 0;
+	case V4L2_CID_AUDIO_VOLUME:
+		tt_setvol(tt,ctrl->value);
+		return 0;
+	}
+	return -EINVAL;
+}
+
+static int vidioc_g_audio(struct file *file, void *priv,
+					struct v4l2_audio *a)
+{
+	if (a->index > 1)
+		return -EINVAL;
+
+	strcpy(a->name, "Radio");
+	a->capability = V4L2_AUDCAP_STEREO;
+	return 0;
+}
+
+static int vidioc_g_input(struct file *filp, void *priv, unsigned int *i)
+{
+	*i = 0;
+	return 0;
+}
+
+static int vidioc_s_input(struct file *filp, void *priv, unsigned int i)
+{
+	if (i != 0)
+		return -EINVAL;
+	return 0;
+}
+
+static int vidioc_s_audio(struct file *file, void *priv,
+					struct v4l2_audio *a)
+{
+	if (a->index != 0)
+		return -EINVAL;
+	return 0;
+}
+
+static struct tt_device terratec_unit;
+
+static int terratec_exclusive_open(struct inode *inode, struct file *file)
+{
+	return test_and_set_bit(0, &terratec_unit.in_use) ? -EBUSY : 0;
+}
+
+static int terratec_exclusive_release(struct inode *inode, struct file *file)
+{
+	clear_bit(0, &terratec_unit.in_use);
+	return 0;
+}
+
+static const struct file_operations terratec_fops = {
+	.owner		= THIS_MODULE,
+	.open           = terratec_exclusive_open,
+	.release        = terratec_exclusive_release,
+	.ioctl		= video_ioctl2,
+#ifdef CONFIG_COMPAT
+	.compat_ioctl	= v4l_compat_ioctl32,
+#endif
+	.llseek         = no_llseek,
+};
+
+static const struct v4l2_ioctl_ops terratec_ioctl_ops = {
+	.vidioc_querycap    = vidioc_querycap,
+	.vidioc_g_tuner     = vidioc_g_tuner,
+	.vidioc_s_tuner     = vidioc_s_tuner,
+	.vidioc_g_frequency = vidioc_g_frequency,
+	.vidioc_s_frequency = vidioc_s_frequency,
+	.vidioc_queryctrl   = vidioc_queryctrl,
+	.vidioc_g_ctrl      = vidioc_g_ctrl,
+	.vidioc_s_ctrl      = vidioc_s_ctrl,
+	.vidioc_g_audio     = vidioc_g_audio,
+	.vidioc_s_audio     = vidioc_s_audio,
+	.vidioc_g_input     = vidioc_g_input,
+	.vidioc_s_input     = vidioc_s_input,
+};
+
+static struct video_device terratec_radio = {
+	.name		= "TerraTec ActiveRadio",
+	.fops           = &terratec_fops,
+	.ioctl_ops 	= &terratec_ioctl_ops,
+	.release	= video_device_release_empty,
+};
+
+static int __init terratec_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, "terratec"))
+	{
+		printk(KERN_ERR "TerraTec: port 0x%x already in use\n", io);
+		return -EBUSY;
+	}
+
+	video_set_drvdata(&terratec_radio, &terratec_unit);
+
+	spin_lock_init(&lock);
+
+	if (video_register_device(&terratec_radio, VFL_TYPE_RADIO, radio_nr) < 0) {
+		release_region(io,2);
+		return -EINVAL;
+	}
+
+	printk(KERN_INFO "TERRATEC ActivRadio Standalone card driver.\n");
+
+	/* mute card - prevents noisy bootups */
+
+	/* this ensures that the volume is all the way down  */
+	cardWriteVol(0);
+	terratec_unit.curvol = 0;
+
+	return 0;
+}
+
+MODULE_AUTHOR("R.OFFERMANNS & others");
+MODULE_DESCRIPTION("A driver for the TerraTec ActiveRadio Standalone radio card.");
+MODULE_LICENSE("GPL");
+module_param(io, int, 0);
+MODULE_PARM_DESC(io, "I/O address of the TerraTec ActiveRadio card (0x590 or 0x591)");
+module_param(radio_nr, int, 0);
+
+static void __exit terratec_cleanup_module(void)
+{
+	video_unregister_device(&terratec_radio);
+	release_region(io,2);
+	printk(KERN_INFO "TERRATEC ActivRadio Standalone card driver unloaded.\n");
+}
+
+module_init(terratec_init);
+module_exit(terratec_cleanup_module);
+