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>

1 files changed, 129 insertions, 149 deletions

diff --git a/drivers/media/radio/radio-rtrack2.c b/drivers/media/radio/radio-rtrack2.c
index 2587227214bf..08bd8d9dc4f1 100644
--- a/drivers/media/radio/radio-rtrack2.c
+++ b/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);