#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
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;
}
{
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;
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;
}
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:
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:
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;
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,
};
.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);
projects / GitHub / moto-9609 / android_kernel_motorola_exynos9610.git / commitdiff