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>

1 files changed, 178 insertions, 201 deletions

diff --git a/drivers/media/radio/radio-zoltrix.c b/drivers/media/radio/radio-zoltrix.c
index d2ac17eeec5f..18dbaf1650de 100644
--- a/drivers/media/radio/radio-zoltrix.c
+++ b/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);
 
-        outb(0, io);
-        outb(0, io);
-        inb(io + 3);            /* Zoltrix needs to be read to confirm */
+        zol->curfreq = freq;
 
-        outb(0x40, io);
-        outb(0xc0, io);
+        outb(0, zol->io);
+        outb(0, zol->io);
+        inb(zol->io + 3);            /* Zoltrix needs to be read to confirm */
 
-        bitmask = (bitmask ^ ((f & 0xff) << 47) ^ ((f & 0xff00) << 30) ^ ( stereo << 31));
+        outb(0x40, zol->io);
+        outb(0xc0, zol->io);
+
+        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:
@@ -341,43 +321,30 @@ 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) {
-                                zol->stereo = 1;
-                                zol_setfreq(zol, zol->curfreq);
-                        }
-                        if (v->mode & VIDEO_SOUND_MONO) {
-                                zol->stereo = 0;
-                                zol_setfreq(zol, zol->curfreq);
-                        }
+        if (v->mode & VIDEO_SOUND_STEREO) {
+                zol->stereo = 1;
+                zol_setfreq(zol, zol->curfreq);
+        }
+        if (v->mode & VIDEO_SOUND_MONO) {
+                zol->stereo = 0;
+                zol_setfreq(zol, zol->curfreq);
+        }
 #endif
         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);