V4L/DVB (10887): radio-rtrack2: convert to v4l2_device.

Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

drivers/media/radio/radio-rtrack2.c

@@ -13,34 +13,17 @@
 #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 <linux/mutex.h>
+#include <linux/version.h>      /* for KERNEL_VERSION MACRO     */
+#include <linux/io.h>		/* outb, outb_p			*/
+#include <linux/uaccess.h>	/* copy to/from user		*/
+#include <media/v4l2-device.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       = 65535,
-		.step          = 65535,
-		.default_value = 0xff,
-		.type          = V4L2_CTRL_TYPE_INTEGER,
-	}
-};
+MODULE_AUTHOR("Ben Pfaff");
+MODULE_DESCRIPTION("A driver for the RadioTrack II radio card.");
+MODULE_LICENSE("GPL");
 
 #ifndef CONFIG_RADIO_RTRACK2_PORT
 #define CONFIG_RADIO_RTRACK2_PORT -1
@@ -48,79 +31,89 @@ static struct v4l2_queryctrl radio_qctrl[] = {
 
 static int io = CONFIG_RADIO_RTRACK2_PORT;
 static int radio_nr = -1;
-static spinlock_t lock;
 
-struct rt_device
+module_param(io, int, 0);
+MODULE_PARM_DESC(io, "I/O address of the RadioTrack card (0x20c or 0x30c)");
+module_param(radio_nr, int, 0);
+
+#define RADIO_VERSION KERNEL_VERSION(0, 0, 2)
+
+struct rtrack2
 {
-	unsigned long in_use;
-	int port;
+	struct v4l2_device v4l2_dev;
+	struct video_device vdev;
+	int io;
 	unsigned long curfreq;
 	int muted;
+	struct mutex lock;
 };
 
+static struct rtrack2 rtrack2_card;
+
 
 /* local things */
 
-static void rt_mute(struct rt_device *dev)
+static void rt_mute(struct rtrack2 *dev)
 {
-	if(dev->muted)
+	if (dev->muted)
 		return;
-	spin_lock(&lock);
-	outb(1, io);
-	spin_unlock(&lock);
+	mutex_lock(&dev->lock);
+	outb(1, dev->io);
+	mutex_unlock(&dev->lock);
+	mutex_unlock(&dev->lock);
 	dev->muted = 1;
 }
 
-static void rt_unmute(struct rt_device *dev)
+static void rt_unmute(struct rtrack2 *dev)
 {
 	if(dev->muted == 0)
 		return;
-	spin_lock(&lock);
-	outb(0, io);
-	spin_unlock(&lock);
+	mutex_lock(&dev->lock);
+	outb(0, dev->io);
+	mutex_unlock(&dev->lock);
 	dev->muted = 0;
 }
 
-static void zero(void)
+static void zero(struct rtrack2 *dev)
 {
-	outb_p(1, io);
-	outb_p(3, io);
-	outb_p(1, io);
+	outb_p(1, dev->io);
+	outb_p(3, dev->io);
+	outb_p(1, dev->io);
 }
 
-static void one(void)
+static void one(struct rtrack2 *dev)
 {
-	outb_p(5, io);
-	outb_p(7, io);
-	outb_p(5, io);
+	outb_p(5, dev->io);
+	outb_p(7, dev->io);
+	outb_p(5, dev->io);
 }
 
-static int rt_setfreq(struct rt_device *dev, unsigned long freq)
+static int rt_setfreq(struct rtrack2 *dev, unsigned long freq)
 {
 	int i;
 
+	mutex_lock(&dev->lock);
+	dev->curfreq = freq;
 	freq = freq / 200 + 856;
 
-	spin_lock(&lock);
-
-	outb_p(0xc8, io);
-	outb_p(0xc9, io);
-	outb_p(0xc9, io);
+	outb_p(0xc8, dev->io);
+	outb_p(0xc9, dev->io);
+	outb_p(0xc9, dev->io);
 
 	for (i = 0; i < 10; i++)
-		zero ();
+		zero(dev);
 
 	for (i = 14; i >= 0; i--)
 		if (freq & (1 << i))
-			one ();
+			one(dev);
 		else
-			zero ();
+			zero(dev);
 
-	outb_p(0xc8, io);
+	outb_p(0xc8, dev->io);
 	if (!dev->muted)
-		outb_p(0, io);
+		outb_p(0, dev->io);
 
-	spin_unlock(&lock);
+	mutex_unlock(&dev->lock);
 	return 0;
 }
 
@@ -129,61 +122,61 @@ static int vidioc_querycap(struct file *file, void *priv,
 {
 	strlcpy(v->driver, "radio-rtrack2", sizeof(v->driver));
 	strlcpy(v->card, "RadioTrack II", sizeof(v->card));
-	sprintf(v->bus_info, "ISA");
+	strlcpy(v->bus_info, "ISA", sizeof(v->bus_info));
 	v->version = RADIO_VERSION;
-	v->capabilities = V4L2_CAP_TUNER;
+	v->capabilities = V4L2_CAP_TUNER | V4L2_CAP_RADIO;
 	return 0;
 }
 
 static int vidioc_s_tuner(struct file *file, void *priv,
 				struct v4l2_tuner *v)
 {
-	if (v->index > 0)
-		return -EINVAL;
-
-	return 0;
+	return v->index ? -EINVAL : 0;
 }
 
-static int rt_getsigstr(struct rt_device *dev)
+static int rt_getsigstr(struct rtrack2 *dev)
 {
-	if (inb(io) & 2)	/* bit set = no signal present	*/
-		return 0;
-	return 1;		/* signal present		*/
+	int sig = 1;
+
+	mutex_lock(&dev->lock);
+	if (inb(dev->io) & 2)	/* bit set = no signal present	*/
+		sig = 0;
+	mutex_unlock(&dev->lock);
+	return sig;
 }
 
 static int vidioc_g_tuner(struct file *file, void *priv,
 				struct v4l2_tuner *v)
 {
-	struct rt_device *rt = video_drvdata(file);
+	struct rtrack2 *rt = video_drvdata(file);
 
 	if (v->index > 0)
 		return -EINVAL;
 
-	strcpy(v->name, "FM");
+	strlcpy(v->name, "FM", sizeof(v->name));
 	v->type = V4L2_TUNER_RADIO;
-	v->rangelow = (88*16000);
-	v->rangehigh = (108*16000);
+	v->rangelow = 88 * 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*rt_getsigstr(rt);
+	v->signal = 0xFFFF * rt_getsigstr(rt);
 	return 0;
 }
 
 static int vidioc_s_frequency(struct file *file, void *priv,
 				struct v4l2_frequency *f)
 {
-	struct rt_device *rt = video_drvdata(file);
+	struct rtrack2 *rt = video_drvdata(file);
 
-	rt->curfreq = f->frequency;
-	rt_setfreq(rt, rt->curfreq);
+	rt_setfreq(rt, f->frequency);
 	return 0;
 }
 
 static int vidioc_g_frequency(struct file *file, void *priv,
 				struct v4l2_frequency *f)
 {
-	struct rt_device *rt = video_drvdata(file);
+	struct rtrack2 *rt = video_drvdata(file);
 
 	f->type = V4L2_TUNER_RADIO;
 	f->frequency = rt->curfreq;
@@ -193,14 +186,11 @@ static int vidioc_g_frequency(struct file *file, void *priv,
 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;
-		}
+	switch (qc->id) {
+	case V4L2_CID_AUDIO_MUTE:
+		return v4l2_ctrl_query_fill(qc, 0, 1, 1, 1);
+	case V4L2_CID_AUDIO_VOLUME:
+		return v4l2_ctrl_query_fill(qc, 0, 65535, 65535, 65535);
 	}
 	return -EINVAL;
 }
@@ -208,7 +198,7 @@ static int vidioc_queryctrl(struct file *file, void *priv,
 static int vidioc_g_ctrl(struct file *file, void *priv,
 				struct v4l2_control *ctrl)
 {
-	struct rt_device *rt = video_drvdata(file);
+	struct rtrack2 *rt = video_drvdata(file);
 
 	switch (ctrl->id) {
 	case V4L2_CID_AUDIO_MUTE:
@@ -227,7 +217,7 @@ static int vidioc_g_ctrl(struct file *file, void *priv,
 static int vidioc_s_ctrl(struct file *file, void *priv,
 				struct v4l2_control *ctrl)
 {
-	struct rt_device *rt = video_drvdata(file);
+	struct rtrack2 *rt = video_drvdata(file);
 
 	switch (ctrl->id) {
 	case V4L2_CID_AUDIO_MUTE:
@@ -246,17 +236,6 @@ static int vidioc_s_ctrl(struct file *file, void *priv,
 	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;
@@ -265,36 +244,38 @@ static int vidioc_g_input(struct file *filp, void *priv, unsigned int *i)
 
 static int vidioc_s_input(struct file *filp, void *priv, unsigned int i)
 {
-	if (i != 0)
-		return -EINVAL;
-	return 0;
+	return i ? -EINVAL : 0;
 }
 
-static int vidioc_s_audio(struct file *file, void *priv,
+static int vidioc_g_audio(struct file *file, void *priv,
 				struct v4l2_audio *a)
 {
-	if (a->index != 0)
-		return -EINVAL;
+	a->index = 0;
+	strlcpy(a->name, "Radio", sizeof(a->name));
+	a->capability = V4L2_AUDCAP_STEREO;
 	return 0;
 }
 
-static struct rt_device rtrack2_unit;
+static int vidioc_s_audio(struct file *file, void *priv,
+				struct v4l2_audio *a)
+{
+	return a->index ? -EINVAL : 0;
+}
 
-static int rtrack2_exclusive_open(struct file *file)
+static int rtrack2_open(struct file *file)
 {
-	return test_and_set_bit(0, &rtrack2_unit.in_use) ? -EBUSY : 0;
+	return 0;
 }
 
-static int rtrack2_exclusive_release(struct file *file)
+static int rtrack2_release(struct file *file)
 {
-	clear_bit(0, &rtrack2_unit.in_use);
 	return 0;
 }
 
 static const struct v4l2_file_operations rtrack2_fops = {
 	.owner		= THIS_MODULE,
-	.open           = rtrack2_exclusive_open,
-	.release        = rtrack2_exclusive_release,
+	.open           = rtrack2_open,
+	.release        = rtrack2_release,
 	.ioctl		= video_ioctl2,
 };
 
@@ -313,62 +294,61 @@ static const struct v4l2_ioctl_ops rtrack2_ioctl_ops = {
 	.vidioc_s_input     = vidioc_s_input,
 };
 
-static struct video_device rtrack2_radio = {
-	.name		= "RadioTrack II radio",
-	.fops           = &rtrack2_fops,
-	.ioctl_ops 	= &rtrack2_ioctl_ops,
-	.release	= video_device_release_empty,
-};
-
 static int __init rtrack2_init(void)
 {
-	if(io==-1)
-	{
-		printk(KERN_ERR "You must set an I/O address with io=0x20c or io=0x30c\n");
+	struct rtrack2 *dev = &rtrack2_card;
+	struct v4l2_device *v4l2_dev = &dev->v4l2_dev;
+	int res;
+
+	strlcpy(v4l2_dev->name, "rtrack2", sizeof(v4l2_dev->name));
+	dev->io = io;
+	if (dev->io == -1) {
+		v4l2_err(v4l2_dev, "You must set an I/O address with io=0x20c or io=0x30c\n");
 		return -EINVAL;
 	}
-	if (!request_region(io, 4, "rtrack2"))
-	{
-		printk(KERN_ERR "rtrack2: port 0x%x already in use\n", io);
+	if (!request_region(dev->io, 4, "rtrack2")) {
+		v4l2_err(v4l2_dev, "port 0x%x already in use\n", dev->io);
 		return -EBUSY;
 	}
 
-	video_set_drvdata(&rtrack2_radio, &rtrack2_unit);
+	res = v4l2_device_register(NULL, v4l2_dev);
+	if (res < 0) {
+		release_region(dev->io, 4);
+		v4l2_err(v4l2_dev, "Could not register v4l2_device\n");
+		return res;
+	}
 
-	spin_lock_init(&lock);
-	if (video_register_device(&rtrack2_radio, VFL_TYPE_RADIO, radio_nr) < 0) {
-		release_region(io, 4);
+	strlcpy(dev->vdev.name, v4l2_dev->name, sizeof(dev->vdev.name));
+	dev->vdev.v4l2_dev = v4l2_dev;
+	dev->vdev.fops = &rtrack2_fops;
+	dev->vdev.ioctl_ops = &rtrack2_ioctl_ops;
+	dev->vdev.release = video_device_release_empty;
+	video_set_drvdata(&dev->vdev, dev);
+
+	mutex_init(&dev->lock);
+	if (video_register_device(&dev->vdev, VFL_TYPE_RADIO, radio_nr) < 0) {
+		v4l2_device_unregister(v4l2_dev);
+		release_region(dev->io, 4);
 		return -EINVAL;
 	}
 
-	printk(KERN_INFO "AIMSlab Radiotrack II card driver.\n");
+	v4l2_info(v4l2_dev, "AIMSlab Radiotrack II card driver.\n");
 
 	/* mute card - prevents noisy bootups */
-	outb(1, io);
-	rtrack2_unit.muted = 1;
+	outb(1, dev->io);
+	dev->muted = 1;
 
 	return 0;
 }
 
-MODULE_AUTHOR("Ben Pfaff");
-MODULE_DESCRIPTION("A driver for the RadioTrack II radio card.");
-MODULE_LICENSE("GPL");
-
-module_param(io, int, 0);
-MODULE_PARM_DESC(io, "I/O address of the RadioTrack card (0x20c or 0x30c)");
-module_param(radio_nr, int, 0);
-
-static void __exit rtrack2_cleanup_module(void)
+static void __exit rtrack2_exit(void)
 {
-	video_unregister_device(&rtrack2_radio);
-	release_region(io,4);
+	struct rtrack2 *dev = &rtrack2_card;
+
+	video_unregister_device(&dev->vdev);
+	v4l2_device_unregister(&dev->v4l2_dev);
+	release_region(dev->io, 4);
 }
 
 module_init(rtrack2_init);
-module_exit(rtrack2_cleanup_module);
-
-/*
-  Local variables:
-  compile-command: "mmake"
-  End:
-*/
+module_exit(rtrack2_exit);