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-rw-r--r--drivers/media/radio/radio-zoltrix.c379
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);
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-01 14:25:37 +0000