V4L/DVB (10893): radio-zoltrix: 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-zoltrix.c

@@ -33,33 +33,17 @@
 #include <linux/init.h>		/* Initdata                       */
 #include <linux/ioport.h>	/* request_region		  */
 #include <linux/delay.h>	/* udelay, msleep                 */
-#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/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          = 4096,
-		.default_value = 0xff,
-		.type          = V4L2_CTRL_TYPE_INTEGER,
-	}
-};
+MODULE_AUTHOR("C.van Schaik");
+MODULE_DESCRIPTION("A driver for the Zoltrix Radio Plus.");
+MODULE_LICENSE("GPL");
 
 #ifndef CONFIG_RADIO_ZOLTRIX_PORT
 #define CONFIG_RADIO_ZOLTRIX_PORT -1
@@ -68,9 +52,16 @@ static struct v4l2_queryctrl radio_qctrl[] = {
 static int io = CONFIG_RADIO_ZOLTRIX_PORT;
 static int radio_nr = -1;
 
-struct zol_device {
-	unsigned long in_use;
-	int port;
+module_param(io, int, 0);
+MODULE_PARM_DESC(io, "I/O address of the Zoltrix Radio Plus (0x20c or 0x30c)");
+module_param(radio_nr, int, 0);
+
+#define RADIO_VERSION KERNEL_VERSION(0, 0, 2)
+
+struct zoltrix {
+	struct v4l2_device v4l2_dev;
+	struct video_device vdev;
+	int io;
 	int curvol;
 	unsigned long curfreq;
 	int muted;
@@ -78,161 +69,158 @@ struct zol_device {
 	struct mutex lock;
 };
 
-static int zol_setvol(struct zol_device *dev, int vol)
+static struct zoltrix zoltrix_card;
+
+static int zol_setvol(struct zoltrix *zol, int vol)
 {
-	dev->curvol = vol;
-	if (dev->muted)
+	zol->curvol = vol;
+	if (zol->muted)
 		return 0;
 
-	mutex_lock(&dev->lock);
+	mutex_lock(&zol->lock);
 	if (vol == 0) {
-		outb(0, io);
-		outb(0, io);
-		inb(io + 3);    /* Zoltrix needs to be read to confirm */
-		mutex_unlock(&dev->lock);
+		outb(0, zol->io);
+		outb(0, zol->io);
+		inb(zol->io + 3);    /* Zoltrix needs to be read to confirm */
+		mutex_unlock(&zol->lock);
 		return 0;
 	}
 
-	outb(dev->curvol-1, io);
+	outb(zol->curvol-1, zol->io);
 	msleep(10);
-	inb(io + 2);
-	mutex_unlock(&dev->lock);
+	inb(zol->io + 2);
+	mutex_unlock(&zol->lock);
 	return 0;
 }
 
-static void zol_mute(struct zol_device *dev)
+static void zol_mute(struct zoltrix *zol)
 {
-	dev->muted = 1;
-	mutex_lock(&dev->lock);
-	outb(0, io);
-	outb(0, io);
-	inb(io + 3);            /* Zoltrix needs to be read to confirm */
-	mutex_unlock(&dev->lock);
+	zol->muted = 1;
+	mutex_lock(&zol->lock);
+	outb(0, zol->io);
+	outb(0, zol->io);
+	inb(zol->io + 3);            /* Zoltrix needs to be read to confirm */
+	mutex_unlock(&zol->lock);
 }
 
-static void zol_unmute(struct zol_device *dev)
+static void zol_unmute(struct zoltrix *zol)
 {
-	dev->muted = 0;
-	zol_setvol(dev, dev->curvol);
+	zol->muted = 0;
+	zol_setvol(zol, zol->curvol);
 }
 
-static int zol_setfreq(struct zol_device *dev, unsigned long freq)
+static int zol_setfreq(struct zoltrix *zol, unsigned long freq)
 {
 	/* tunes the radio to the desired frequency */
+	struct v4l2_device *v4l2_dev = &zol->v4l2_dev;
 	unsigned long long bitmask, f, m;
-	unsigned int stereo = dev->stereo;
+	unsigned int stereo = zol->stereo;
 	int i;
 
 	if (freq == 0) {
-		printk(KERN_WARNING "zoltrix: received zero freq. Failed to set.\n");
+		v4l2_warn(v4l2_dev, "cannot set a frequency of 0.\n");
 		return -EINVAL;
 	}
 
 	m = (freq / 160 - 8800) * 2;
-	f = (unsigned long long) m + 0x4d1c;
+	f = (unsigned long long)m + 0x4d1c;
 
 	bitmask = 0xc480402c10080000ull;
 	i = 45;
 
-	mutex_lock(&dev->lock);
+	mutex_lock(&zol->lock);
+
+	zol->curfreq = freq;
 
-	outb(0, io);
-	outb(0, io);
-	inb(io + 3);            /* Zoltrix needs to be read to confirm */
+	outb(0, zol->io);
+	outb(0, zol->io);
+	inb(zol->io + 3);            /* Zoltrix needs to be read to confirm */
 
-	outb(0x40, io);
-	outb(0xc0, io);
+	outb(0x40, zol->io);
+	outb(0xc0, zol->io);
 
-	bitmask = (bitmask ^ ((f & 0xff) << 47) ^ ((f & 0xff00) << 30) ^ ( stereo << 31));
+	bitmask = (bitmask ^ ((f & 0xff) << 47) ^ ((f & 0xff00) << 30) ^ (stereo << 31));
 	while (i--) {
 		if ((bitmask & 0x8000000000000000ull) != 0) {
-			outb(0x80, io);
+			outb(0x80, zol->io);
 			udelay(50);
-			outb(0x00, io);
+			outb(0x00, zol->io);
 			udelay(50);
-			outb(0x80, io);
+			outb(0x80, zol->io);
 			udelay(50);
 		} else {
-			outb(0xc0, io);
+			outb(0xc0, zol->io);
 			udelay(50);
-			outb(0x40, io);
+			outb(0x40, zol->io);
 			udelay(50);
-			outb(0xc0, io);
+			outb(0xc0, zol->io);
 			udelay(50);
 		}
 		bitmask *= 2;
 	}
 	/* termination sequence */
-	outb(0x80, io);
-	outb(0xc0, io);
-	outb(0x40, io);
+	outb(0x80, zol->io);
+	outb(0xc0, zol->io);
+	outb(0x40, zol->io);
 	udelay(1000);
-	inb(io+2);
+	inb(zol->io + 2);
 
 	udelay(1000);
 
-	if (dev->muted)
-	{
-		outb(0, io);
-		outb(0, io);
-		inb(io + 3);
+	if (zol->muted) {
+		outb(0, zol->io);
+		outb(0, zol->io);
+		inb(zol->io + 3);
 		udelay(1000);
 	}
 
-	mutex_unlock(&dev->lock);
+	mutex_unlock(&zol->lock);
 
-	if(!dev->muted)
-	{
-		zol_setvol(dev, dev->curvol);
-	}
+	if (!zol->muted)
+		zol_setvol(zol, zol->curvol);
 	return 0;
 }
 
 /* Get signal strength */
-
-static int zol_getsigstr(struct zol_device *dev)
+static int zol_getsigstr(struct zoltrix *zol)
 {
 	int a, b;
 
-	mutex_lock(&dev->lock);
-	outb(0x00, io);         /* This stuff I found to do nothing */
-	outb(dev->curvol, io);
+	mutex_lock(&zol->lock);
+	outb(0x00, zol->io);         /* This stuff I found to do nothing */
+	outb(zol->curvol, zol->io);
 	msleep(20);
 
-	a = inb(io);
+	a = inb(zol->io);
 	msleep(10);
-	b = inb(io);
+	b = inb(zol->io);
 
-	mutex_unlock(&dev->lock);
+	mutex_unlock(&zol->lock);
 
 	if (a != b)
-		return (0);
+		return 0;
 
-	if ((a == 0xcf) || (a == 0xdf)  /* I found this out by playing */
-		|| (a == 0xef))       /* with a binary scanner on the card io */
-		return (1);
-	return (0);
+	/* I found this out by playing with a binary scanner on the card io */
+	return a == 0xcf || a == 0xdf || a == 0xef;
 }
 
-static int zol_is_stereo (struct zol_device *dev)
+static int zol_is_stereo(struct zoltrix *zol)
 {
 	int x1, x2;
 
-	mutex_lock(&dev->lock);
+	mutex_lock(&zol->lock);
 
-	outb(0x00, io);
-	outb(dev->curvol, io);
+	outb(0x00, zol->io);
+	outb(zol->curvol, zol->io);
 	msleep(20);
 
-	x1 = inb(io);
+	x1 = inb(zol->io);
 	msleep(10);
-	x2 = inb(io);
+	x2 = inb(zol->io);
 
-	mutex_unlock(&dev->lock);
+	mutex_unlock(&zol->lock);
 
-	if ((x1 == x2) && (x1 == 0xcf))
-		return 1;
-	return 0;
+	return x1 == x2 && x1 == 0xcf;
 }
 
 static int vidioc_querycap(struct file *file, void  *priv,
@@ -240,59 +228,54 @@ static int vidioc_querycap(struct file *file, void  *priv,
 {
 	strlcpy(v->driver, "radio-zoltrix", sizeof(v->driver));
 	strlcpy(v->card, "Zoltrix Radio", 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_g_tuner(struct file *file, void *priv,
 					struct v4l2_tuner *v)
 {
-	struct zol_device *zol = video_drvdata(file);
+	struct zoltrix *zol = 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->rxsubchans = V4L2_TUNER_SUB_MONO|V4L2_TUNER_SUB_STEREO;
+	v->rangelow = 88 * 16000;
+	v->rangehigh = 108 * 16000;
+	v->rxsubchans = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO;
 	v->capability = V4L2_TUNER_CAP_LOW;
 	if (zol_is_stereo(zol))
 		v->audmode = V4L2_TUNER_MODE_STEREO;
 	else
 		v->audmode = V4L2_TUNER_MODE_MONO;
-	v->signal = 0xFFFF*zol_getsigstr(zol);
+	v->signal = 0xFFFF * zol_getsigstr(zol);
 	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 vidioc_s_frequency(struct file *file, void *priv,
 					struct v4l2_frequency *f)
 {
-	struct zol_device *zol = video_drvdata(file);
+	struct zoltrix *zol = video_drvdata(file);
 
-	zol->curfreq = f->frequency;
-	if (zol_setfreq(zol, zol->curfreq) != 0) {
-		printk(KERN_WARNING "zoltrix: Set frequency failed.\n");
+	if (zol_setfreq(zol, f->frequency) != 0)
 		return -EINVAL;
-	}
 	return 0;
 }
 
 static int vidioc_g_frequency(struct file *file, void *priv,
 					struct v4l2_frequency *f)
 {
-	struct zol_device *zol = video_drvdata(file);
+	struct zoltrix *zol = video_drvdata(file);
 
 	f->type = V4L2_TUNER_RADIO;
 	f->frequency = zol->curfreq;
@@ -302,14 +285,11 @@ 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, 4096, 65535);
 	}
 	return -EINVAL;
 }
@@ -317,7 +297,7 @@ static int vidioc_queryctrl(struct file *file, void *priv,
 static int vidioc_g_ctrl(struct file *file, void *priv,
 				struct v4l2_control *ctrl)
 {
-	struct zol_device *zol = video_drvdata(file);
+	struct zoltrix *zol = video_drvdata(file);
 
 	switch (ctrl->id) {
 	case V4L2_CID_AUDIO_MUTE:
@@ -333,7 +313,7 @@ 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 zol_device *zol = video_drvdata(file);
+	struct zoltrix *zol = video_drvdata(file);
 
 	switch (ctrl->id) {
 	case V4L2_CID_AUDIO_MUTE:
@@ -341,18 +321,16 @@ static int vidioc_s_ctrl(struct file *file, void *priv,
 			zol_mute(zol);
 		else {
 			zol_unmute(zol);
-			zol_setvol(zol,zol->curvol);
+			zol_setvol(zol, zol->curvol);
 		}
 		return 0;
 	case V4L2_CID_AUDIO_VOLUME:
-		zol_setvol(zol,ctrl->value/4096);
+		zol_setvol(zol, ctrl->value / 4096);
 		return 0;
 	}
 	zol->stereo = 1;
-	if (zol_setfreq(zol, zol->curfreq) != 0) {
-		printk(KERN_WARNING "zoltrix: Set frequency failed.\n");
+	if (zol_setfreq(zol, zol->curfreq) != 0)
 		return -EINVAL;
-	}
 #if 0
 /* FIXME: Implement stereo/mono switch on V4L2 */
 	if (v->mode & VIDEO_SOUND_STEREO) {
@@ -367,17 +345,6 @@ 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;
@@ -386,37 +353,39 @@ 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 zol_device zoltrix_unit;
+static int vidioc_s_audio(struct file *file, void *priv,
+					struct v4l2_audio *a)
+{
+	return a->index ? -EINVAL : 0;
+}
 
-static int zoltrix_exclusive_open(struct file *file)
+static int zoltrix_open(struct file *file)
 {
-	return test_and_set_bit(0, &zoltrix_unit.in_use) ? -EBUSY : 0;
+	return 0;
 }
 
-static int zoltrix_exclusive_release(struct file *file)
+static int zoltrix_release(struct file *file)
 {
-	clear_bit(0, &zoltrix_unit.in_use);
 	return 0;
 }
 
 static const struct v4l2_file_operations zoltrix_fops =
 {
 	.owner		= THIS_MODULE,
-	.open           = zoltrix_exclusive_open,
-	.release        = zoltrix_exclusive_release,
+	.open           = zoltrix_open,
+	.release        = zoltrix_release,
 	.ioctl		= video_ioctl2,
 };
 
@@ -435,67 +404,75 @@ static const struct v4l2_ioctl_ops zoltrix_ioctl_ops = {
 	.vidioc_s_ctrl      = vidioc_s_ctrl,
 };
 
-static struct video_device zoltrix_radio = {
-	.name		= "Zoltrix Radio Plus",
-	.fops           = &zoltrix_fops,
-	.ioctl_ops 	= &zoltrix_ioctl_ops,
-	.release	= video_device_release_empty,
-};
-
 static int __init zoltrix_init(void)
 {
-	if (io == -1) {
-		printk(KERN_ERR "You must set an I/O address with io=0x???\n");
+	struct zoltrix *zol = &zoltrix_card;
+	struct v4l2_device *v4l2_dev = &zol->v4l2_dev;
+	int res;
+
+	strlcpy(v4l2_dev->name, "zoltrix", sizeof(v4l2_dev->name));
+	zol->io = io;
+	if (zol->io == -1) {
+		v4l2_err(v4l2_dev, "You must set an I/O address with io=0x???\n");
 		return -EINVAL;
 	}
-	if ((io != 0x20c) && (io != 0x30c)) {
-		printk(KERN_ERR "zoltrix: invalid port, try 0x20c or 0x30c\n");
+	if (zol->io != 0x20c && zol->io != 0x30c) {
+		v4l2_err(v4l2_dev, "invalid port, try 0x20c or 0x30c\n");
 		return -ENXIO;
 	}
 
-	video_set_drvdata(&zoltrix_radio, &zoltrix_unit);
-	if (!request_region(io, 2, "zoltrix")) {
-		printk(KERN_ERR "zoltrix: port 0x%x already in use\n", io);
+	if (!request_region(zol->io, 2, "zoltrix")) {
+		v4l2_err(v4l2_dev, "port 0x%x already in use\n", zol->io);
 		return -EBUSY;
 	}
 
-	if (video_register_device(&zoltrix_radio, VFL_TYPE_RADIO, radio_nr) < 0) {
-		release_region(io, 2);
+	res = v4l2_device_register(NULL, v4l2_dev);
+	if (res < 0) {
+		release_region(zol->io, 2);
+		v4l2_err(v4l2_dev, "Could not register v4l2_device\n");
+		return res;
+	}
+
+	strlcpy(zol->vdev.name, v4l2_dev->name, sizeof(zol->vdev.name));
+	zol->vdev.v4l2_dev = v4l2_dev;
+	zol->vdev.fops = &zoltrix_fops;
+	zol->vdev.ioctl_ops = &zoltrix_ioctl_ops;
+	zol->vdev.release = video_device_release_empty;
+	video_set_drvdata(&zol->vdev, zol);
+
+	if (video_register_device(&zol->vdev, VFL_TYPE_RADIO, radio_nr) < 0) {
+		v4l2_device_unregister(v4l2_dev);
+		release_region(zol->io, 2);
 		return -EINVAL;
 	}
-	printk(KERN_INFO "Zoltrix Radio Plus card driver.\n");
+	v4l2_info(v4l2_dev, "Zoltrix Radio Plus card driver.\n");
 
-	mutex_init(&zoltrix_unit.lock);
+	mutex_init(&zol->lock);
 
 	/* mute card - prevents noisy bootups */
 
 	/* this ensures that the volume is all the way down  */
 
-	outb(0, io);
-	outb(0, io);
+	outb(0, zol->io);
+	outb(0, zol->io);
 	msleep(20);
-	inb(io + 3);
+	inb(zol->io + 3);
 
-	zoltrix_unit.curvol = 0;
-	zoltrix_unit.stereo = 1;
+	zol->curvol = 0;
+	zol->stereo = 1;
 
 	return 0;
 }
 
-MODULE_AUTHOR("C.van Schaik");
-MODULE_DESCRIPTION("A driver for the Zoltrix Radio Plus.");
-MODULE_LICENSE("GPL");
-
-module_param(io, int, 0);
-MODULE_PARM_DESC(io, "I/O address of the Zoltrix Radio Plus (0x20c or 0x30c)");
-module_param(radio_nr, int, 0);
-
-static void __exit zoltrix_cleanup_module(void)
+static void __exit zoltrix_exit(void)
 {
-	video_unregister_device(&zoltrix_radio);
-	release_region(io, 2);
+	struct zoltrix *zol = &zoltrix_card;
+
+	video_unregister_device(&zol->vdev);
+	v4l2_device_unregister(&zol->v4l2_dev);
+	release_region(zol->io, 2);
 }
 
 module_init(zoltrix_init);
-module_exit(zoltrix_cleanup_module);
+module_exit(zoltrix_exit);