V4L/DVB (10892): radio-typhoon: convert to v4l2_device.

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

1 files changed, 141 insertions, 209 deletions

diff --git a/drivers/media/radio/radio-typhoon.c b/drivers/media/radio/radio-typhoon.c
index 5c3b319dab37..2090df44d508 100644
--- a/drivers/media/radio/radio-typhoon.c
+++ b/drivers/media/radio/radio-typhoon.c
@@ -34,37 +34,16 @@
 #include <linux/module.h>       /* Modules                        */
 #include <linux/init.h>         /* Initdata                       */
 #include <linux/ioport.h>       /* request_region                 */
-#include <linux/proc_fs.h>      /* radio card status report       */
-#include <linux/seq_file.h>
-#include <asm/io.h>             /* outb, outb_p                   */
-#include <asm/uaccess.h>        /* copy to/from user              */
+#include <linux/version.h>      /* for KERNEL_VERSION MACRO     */
 #include <linux/videodev2.h>    /* kernel radio structs           */
-#include <media/v4l2-common.h>
+#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(0,1,1)
-#define BANNER "Typhoon Radio Card driver v0.1.1\n"
-
-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          = 1<<14,
-                .default_value = 0xff,
-                .type          = V4L2_CTRL_TYPE_INTEGER,
-        }
-};
-
+MODULE_AUTHOR("Dr. Henrik Seidel");
+MODULE_DESCRIPTION("A driver for the Typhoon radio card (a.k.a. EcoRadio).");
+MODULE_LICENSE("GPL");
 
 #ifndef CONFIG_RADIO_TYPHOON_PORT
 #define CONFIG_RADIO_TYPHOON_PORT -1
@@ -74,13 +53,26 @@ static struct v4l2_queryctrl radio_qctrl[] = {
 #define CONFIG_RADIO_TYPHOON_MUTEFREQ 0
 #endif
 
-#ifndef CONFIG_PROC_FS
-#undef CONFIG_RADIO_TYPHOON_PROC_FS
-#endif
+static int io = CONFIG_RADIO_TYPHOON_PORT;
+static int radio_nr = -1;
 
-struct typhoon_device {
-        unsigned long in_use;
-        int iobase;
+module_param(io, int, 0);
+MODULE_PARM_DESC(io, "I/O address of the Typhoon card (0x316 or 0x336)");
+
+module_param(radio_nr, int, 0);
+
+static unsigned long mutefreq = CONFIG_RADIO_TYPHOON_MUTEFREQ;
+module_param(mutefreq, ulong, 0);
+MODULE_PARM_DESC(mutefreq, "Frequency used when muting the card (in kHz)");
+
+#define RADIO_VERSION KERNEL_VERSION(0, 1, 1)
+
+#define BANNER "Typhoon Radio Card driver v0.1.1\n"
+
+struct typhoon {
+        struct v4l2_device v4l2_dev;
+        struct video_device vdev;
+        int io;
         int curvol;
         int muted;
         unsigned long curfreq;
@@ -88,25 +80,19 @@ struct typhoon_device {
         struct mutex lock;
 };
 
-static void typhoon_setvol_generic(struct typhoon_device *dev, int vol);
-static int typhoon_setfreq_generic(struct typhoon_device *dev,
-                                   unsigned long frequency);
-static int typhoon_setfreq(struct typhoon_device *dev, unsigned long frequency);
-static void typhoon_mute(struct typhoon_device *dev);
-static void typhoon_unmute(struct typhoon_device *dev);
-static int typhoon_setvol(struct typhoon_device *dev, int vol);
+static struct typhoon typhoon_card;
 
-static void typhoon_setvol_generic(struct typhoon_device *dev, int vol)
+static void typhoon_setvol_generic(struct typhoon *dev, int vol)
 {
         mutex_lock(&dev->lock);
         vol >>= 14;                             /* Map 16 bit to 2 bit */
         vol &= 3;
-        outb_p(vol / 2, dev->iobase);           /* Set the volume, high bit. */
-        outb_p(vol % 2, dev->iobase + 2);       /* Set the volume, low bit. */
+        outb_p(vol / 2, dev->io);               /* Set the volume, high bit. */
+        outb_p(vol % 2, dev->io + 2);   /* Set the volume, low bit. */
         mutex_unlock(&dev->lock);
 }
 
-static int typhoon_setfreq_generic(struct typhoon_device *dev,
+static int typhoon_setfreq_generic(struct typhoon *dev,
                                    unsigned long frequency)
 {
         unsigned long outval;
@@ -130,22 +116,22 @@ static int typhoon_setfreq_generic(struct typhoon_device *dev,
         outval -= (10 * x * x + 10433) / 20866;
         outval += 4 * x - 11505;
 
-        outb_p((outval >> 8) & 0x01, dev->iobase + 4);
-        outb_p(outval >> 9, dev->iobase + 6);
-        outb_p(outval & 0xff, dev->iobase + 8);
+        outb_p((outval >> 8) & 0x01, dev->io + 4);
+        outb_p(outval >> 9, dev->io + 6);
+        outb_p(outval & 0xff, dev->io + 8);
         mutex_unlock(&dev->lock);
 
         return 0;
 }
 
-static int typhoon_setfreq(struct typhoon_device *dev, unsigned long frequency)
+static int typhoon_setfreq(struct typhoon *dev, unsigned long frequency)
 {
         typhoon_setfreq_generic(dev, frequency);
         dev->curfreq = frequency;
         return 0;
 }
 
-static void typhoon_mute(struct typhoon_device *dev)
+static void typhoon_mute(struct typhoon *dev)
 {
         if (dev->muted == 1)
                 return;
@@ -154,7 +140,7 @@ static void typhoon_mute(struct typhoon_device *dev)
         dev->muted = 1;
 }
 
-static void typhoon_unmute(struct typhoon_device *dev)
+static void typhoon_unmute(struct typhoon *dev)
 {
         if (dev->muted == 0)
                 return;
@@ -163,7 +149,7 @@ static void typhoon_unmute(struct typhoon_device *dev)
         dev->muted = 0;
 }
 
-static int typhoon_setvol(struct typhoon_device *dev, int vol)
+static int typhoon_setvol(struct typhoon *dev, int vol)
 {
         if (dev->muted && vol != 0) {   /* user is unmuting the card */
                 dev->curvol = vol;
@@ -188,9 +174,9 @@ static int vidioc_querycap(struct file *file, void  *priv,
 {
         strlcpy(v->driver, "radio-typhoon", sizeof(v->driver));
         strlcpy(v->card, "Typhoon 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;
 }
 
@@ -200,10 +186,10 @@ static int vidioc_g_tuner(struct file *file, void *priv,
         if (v->index > 0)
                 return -EINVAL;
 
-        strcpy(v->name, "FM");
+        strlcpy(v->name, "FM", sizeof(v->name));
         v->type = V4L2_TUNER_RADIO;
-        v->rangelow = (87.5*16000);
-        v->rangehigh = (108*16000);
+        v->rangelow = 87.5 * 16000;
+        v->rangehigh = 108 * 16000;
         v->rxsubchans = V4L2_TUNER_SUB_MONO;
         v->capability = V4L2_TUNER_CAP_LOW;
         v->audmode = V4L2_TUNER_MODE_MONO;
@@ -214,44 +200,37 @@ static int vidioc_g_tuner(struct file *file, void *priv,
 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,
+static int vidioc_g_frequency(struct file *file, void *priv,
                                         struct v4l2_frequency *f)
 {
-        struct typhoon_device *typhoon = video_drvdata(file);
+        struct typhoon *dev = video_drvdata(file);
 
-        typhoon->curfreq = f->frequency;
-        typhoon_setfreq(typhoon, typhoon->curfreq);
+        f->type = V4L2_TUNER_RADIO;
+        f->frequency = dev->curfreq;
         return 0;
 }
 
-static int vidioc_g_frequency(struct file *file, void *priv,
+static int vidioc_s_frequency(struct file *file, void *priv,
                                         struct v4l2_frequency *f)
 {
-        struct typhoon_device *typhoon = video_drvdata(file);
-
-        f->type = V4L2_TUNER_RADIO;
-        f->frequency = typhoon->curfreq;
+        struct typhoon *dev = video_drvdata(file);
 
+        dev->curfreq = f->frequency;
+        typhoon_setfreq(dev, dev->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;
-                }
+        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, 16384, 65535);
         }
         return -EINVAL;
 }
@@ -259,14 +238,14 @@ static int vidioc_queryctrl(struct file *file, void *priv,
 static int vidioc_g_ctrl(struct file *file, void *priv,
                                         struct v4l2_control *ctrl)
 {
-        struct typhoon_device *typhoon = video_drvdata(file);
+        struct typhoon *dev = video_drvdata(file);
 
         switch (ctrl->id) {
         case V4L2_CID_AUDIO_MUTE:
-                ctrl->value = typhoon->muted;
+                ctrl->value = dev->muted;
                 return 0;
         case V4L2_CID_AUDIO_VOLUME:
-                ctrl->value = typhoon->curvol;
+                ctrl->value = dev->curvol;
                 return 0;
         }
         return -EINVAL;
@@ -275,33 +254,22 @@ 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 typhoon_device *typhoon = video_drvdata(file);
+        struct typhoon *dev = video_drvdata(file);
 
         switch (ctrl->id) {
         case V4L2_CID_AUDIO_MUTE:
                 if (ctrl->value)
-                        typhoon_mute(typhoon);
+                        typhoon_mute(dev);
                 else
-                        typhoon_unmute(typhoon);
+                        typhoon_unmute(dev);
                 return 0;
         case V4L2_CID_AUDIO_VOLUME:
-                typhoon_setvol(typhoon, ctrl->value);
+                typhoon_setvol(dev, 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;
@@ -310,45 +278,62 @@ 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 i ? -EINVAL : 0;
+}
+
+static int vidioc_g_audio(struct file *file, void *priv,
+                                        struct v4l2_audio *a)
+{
+        a->index = 0;
+        strlcpy(a->name, "Radio", sizeof(a->name));
+        a->capability = V4L2_AUDCAP_STEREO;
         return 0;
 }
 
 static int vidioc_s_audio(struct file *file, void *priv,
                                         struct v4l2_audio *a)
 {
-        if (a->index != 0)
-                return -EINVAL;
-        return 0;
+        return a->index ? -EINVAL : 0;
 }
 
-static struct typhoon_device typhoon_unit =
+static int vidioc_log_status(struct file *file, void *priv)
 {
-        .iobase         = CONFIG_RADIO_TYPHOON_PORT,
-        .curfreq        = CONFIG_RADIO_TYPHOON_MUTEFREQ,
-        .mutefreq       = CONFIG_RADIO_TYPHOON_MUTEFREQ,
-};
+        struct typhoon *dev = video_drvdata(file);
+        struct v4l2_device *v4l2_dev = &dev->v4l2_dev;
+
+        v4l2_info(v4l2_dev, BANNER);
+#ifdef MODULE
+        v4l2_info(v4l2_dev, "Load type: Driver loaded as a module\n\n");
+#else
+        v4l2_info(v4l2_dev, "Load type: Driver compiled into kernel\n\n");
+#endif
+        v4l2_info(v4l2_dev, "frequency = %lu kHz\n", dev->curfreq >> 4);
+        v4l2_info(v4l2_dev, "volume = %d\n", dev->curvol);
+        v4l2_info(v4l2_dev, "mute = %s\n", dev->muted ?  "on" : "off");
+        v4l2_info(v4l2_dev, "io = 0x%x\n", dev->io);
+        v4l2_info(v4l2_dev, "mute frequency = %lu kHz\n", dev->mutefreq >> 4);
+        return 0;
+}
 
-static int typhoon_exclusive_open(struct file *file)
+static int typhoon_open(struct file *file)
 {
-        return test_and_set_bit(0, &typhoon_unit.in_use) ? -EBUSY : 0;
+        return 0;
 }
 
-static int typhoon_exclusive_release(struct file *file)
+static int typhoon_release(struct file *file)
 {
-        clear_bit(0, &typhoon_unit.in_use);
         return 0;
 }
 
 static const struct v4l2_file_operations typhoon_fops = {
         .owner          = THIS_MODULE,
-        .open           = typhoon_exclusive_open,
-        .release        = typhoon_exclusive_release,
+        .open           = typhoon_open,
+        .release        = typhoon_release,
         .ioctl          = video_ioctl2,
 };
 
 static const struct v4l2_ioctl_ops typhoon_ioctl_ops = {
+        .vidioc_log_status  = vidioc_log_status,
         .vidioc_querycap    = vidioc_querycap,
         .vidioc_g_tuner     = vidioc_g_tuner,
         .vidioc_s_tuner     = vidioc_s_tuner,
@@ -363,125 +348,72 @@ static const struct v4l2_ioctl_ops typhoon_ioctl_ops = {
         .vidioc_s_ctrl      = vidioc_s_ctrl,
 };
 
-static struct video_device typhoon_radio = {
-        .name           = "Typhoon Radio",
-        .fops           = &typhoon_fops,
-        .ioctl_ops      = &typhoon_ioctl_ops,
-        .release        = video_device_release_empty,
-};
-
-#ifdef CONFIG_RADIO_TYPHOON_PROC_FS
-
-static int typhoon_proc_show(struct seq_file *m, void *v)
-{
-        #ifdef MODULE
-            #define MODULEPROCSTRING "Driver loaded as a module"
-        #else
-            #define MODULEPROCSTRING "Driver compiled into kernel"
-        #endif
-
-        seq_puts(m, BANNER);
-        seq_puts(m, "Load type: " MODULEPROCSTRING "\n\n");
-        seq_printf(m, "frequency = %lu kHz\n",
-                typhoon_unit.curfreq >> 4);
-        seq_printf(m, "volume = %d\n", typhoon_unit.curvol);
-        seq_printf(m, "mute = %s\n", typhoon_unit.muted ?
-                "on" : "off");
-        seq_printf(m, "iobase = 0x%x\n", typhoon_unit.iobase);
-        seq_printf(m, "mute frequency = %lu kHz\n",
-                typhoon_unit.mutefreq >> 4);
-        return 0;
-}
-
-static int typhoon_proc_open(struct inode *inode, struct file *file)
+static int __init typhoon_init(void)
 {
-        return single_open(file, typhoon_proc_show, NULL);
-}
-
-static const struct file_operations typhoon_proc_fops = {
-        .owner          = THIS_MODULE,
-        .open           = typhoon_proc_open,
-        .read           = seq_read,
-        .llseek         = seq_lseek,
-        .release        = single_release,
-};
-#endif /* CONFIG_RADIO_TYPHOON_PROC_FS */
-
-MODULE_AUTHOR("Dr. Henrik Seidel");
-MODULE_DESCRIPTION("A driver for the Typhoon radio card (a.k.a. EcoRadio).");
-MODULE_LICENSE("GPL");
-
-static int io = -1;
-static int radio_nr = -1;
-
-module_param(io, int, 0);
-MODULE_PARM_DESC(io, "I/O address of the Typhoon card (0x316 or 0x336)");
-module_param(radio_nr, int, 0);
+        struct typhoon *dev = &typhoon_card;
+        struct v4l2_device *v4l2_dev = &dev->v4l2_dev;
+        int res;
 
-#ifdef MODULE
-static unsigned long mutefreq;
-module_param(mutefreq, ulong, 0);
-MODULE_PARM_DESC(mutefreq, "Frequency used when muting the card (in kHz)");
-#endif
+        strlcpy(v4l2_dev->name, "typhoon", sizeof(v4l2_dev->name));
+        dev->io = io;
+        dev->curfreq = dev->mutefreq = mutefreq;
 
-static int __init typhoon_init(void)
-{
-#ifdef MODULE
-        if (io == -1) {
-                printk(KERN_ERR "radio-typhoon: You must set an I/O address with io=0x316 or io=0x336\n");
+        if (dev->io == -1) {
+                v4l2_err(v4l2_dev, "You must set an I/O address with io=0x316 or io=0x336\n");
                 return -EINVAL;
         }
-        typhoon_unit.iobase = io;
 
-        if (mutefreq < 87000 || mutefreq > 108500) {
-                printk(KERN_ERR "radio-typhoon: You must set a frequency (in kHz) used when muting the card,\n");
-                printk(KERN_ERR "radio-typhoon: e.g. with \"mutefreq=87500\" (87000 <= mutefreq <= 108500)\n");
+        if (dev->mutefreq < 87000 || dev->mutefreq > 108500) {
+                v4l2_err(v4l2_dev, "You must set a frequency (in kHz) used when muting the card,\n");
+                v4l2_err(v4l2_dev, "e.g. with \"mutefreq=87500\" (87000 <= mutefreq <= 108500)\n");
                 return -EINVAL;
         }
-        typhoon_unit.mutefreq = mutefreq;
-#endif /* MODULE */
-
-        printk(KERN_INFO BANNER);
-        mutex_init(&typhoon_unit.lock);
-        io = typhoon_unit.iobase;
-        if (!request_region(io, 8, "typhoon")) {
-                printk(KERN_ERR "radio-typhoon: port 0x%x already in use\n",
-                       typhoon_unit.iobase);
+
+        mutex_init(&dev->lock);
+        if (!request_region(dev->io, 8, "typhoon")) {
+                v4l2_err(v4l2_dev, "port 0x%x already in use\n",
+                       dev->io);
                 return -EBUSY;
         }
 
-        video_set_drvdata(&typhoon_radio, &typhoon_unit);
-        if (video_register_device(&typhoon_radio, VFL_TYPE_RADIO, radio_nr) < 0) {
-                release_region(io, 8);
+        res = v4l2_device_register(NULL, v4l2_dev);
+        if (res < 0) {
+                release_region(dev->io, 8);
+                v4l2_err(v4l2_dev, "Could not register v4l2_device\n");
+                return res;
+        }
+        v4l2_info(v4l2_dev, BANNER);
+
+        strlcpy(dev->vdev.name, v4l2_dev->name, sizeof(dev->vdev.name));
+        dev->vdev.v4l2_dev = v4l2_dev;
+        dev->vdev.fops = &typhoon_fops;
+        dev->vdev.ioctl_ops = &typhoon_ioctl_ops;
+        dev->vdev.release = video_device_release_empty;
+        video_set_drvdata(&dev->vdev, dev);
+        if (video_register_device(&dev->vdev, VFL_TYPE_RADIO, radio_nr) < 0) {
+                v4l2_device_unregister(&dev->v4l2_dev);
+                release_region(dev->io, 8);
                 return -EINVAL;
         }
-        printk(KERN_INFO "radio-typhoon: port 0x%x.\n", typhoon_unit.iobase);
-        printk(KERN_INFO "radio-typhoon: mute frequency is %lu kHz.\n",
-               typhoon_unit.mutefreq);
-        typhoon_unit.mutefreq <<= 4;
+        v4l2_info(v4l2_dev, "port 0x%x.\n", dev->io);
+        v4l2_info(v4l2_dev, "mute frequency is %lu kHz.\n", dev->mutefreq);
+        dev->mutefreq <<= 4;
 
         /* mute card - prevents noisy bootups */
-        typhoon_mute(&typhoon_unit);
-
-#ifdef CONFIG_RADIO_TYPHOON_PROC_FS
-        if (!proc_create("driver/radio-typhoon", 0, NULL, &typhoon_proc_fops))
-                printk(KERN_ERR "radio-typhoon: registering /proc/driver/radio-typhoon failed\n");
-#endif
+        typhoon_mute(dev);
 
         return 0;
 }
 
-static void __exit typhoon_cleanup_module(void)
+static void __exit typhoon_exit(void)
 {
+        struct typhoon *dev = &typhoon_card;
 
-#ifdef CONFIG_RADIO_TYPHOON_PROC_FS
-        remove_proc_entry("driver/radio-typhoon", NULL);
-#endif
-
-        video_unregister_device(&typhoon_radio);
-        release_region(io, 8);
+        video_unregister_device(&dev->vdev);
+        v4l2_device_unregister(&dev->v4l2_dev);
+        release_region(dev->io, 8);
 }
 
 module_init(typhoon_init);
-module_exit(typhoon_cleanup_module);
+module_exit(typhoon_exit);