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path: root/drivers/media/radio/radio-typhoon.c
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Diffstat (limited to 'drivers/media/radio/radio-typhoon.c')
-rw-r--r--drivers/media/radio/radio-typhoon.c343
1 files changed, 131 insertions, 212 deletions
diff --git a/drivers/media/radio/radio-typhoon.c b/drivers/media/radio/radio-typhoon.c
index 5c3b319dab37..3a98f1399495 100644
--- a/drivers/media/radio/radio-typhoon.c
+++ b/drivers/media/radio/radio-typhoon.c
@@ -34,37 +34,15 @@
#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 <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 +52,26 @@ 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 +79,19 @@ 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 +115,22 @@ 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 +139,7 @@ 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 +148,7 @@ 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 +173,9 @@ 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 +185,10 @@ 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 +199,37 @@ 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 +237,14 @@ 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 +253,22 @@ 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 +277,50 @@ 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 typhoon_device typhoon_unit =
-{
- .iobase = CONFIG_RADIO_TYPHOON_PORT,
- .curfreq = CONFIG_RADIO_TYPHOON_MUTEFREQ,
- .mutefreq = CONFIG_RADIO_TYPHOON_MUTEFREQ,
-};
-
-static int typhoon_exclusive_open(struct file *file)
+static int vidioc_s_audio(struct file *file, void *priv,
+ struct v4l2_audio *a)
{
- return test_and_set_bit(0, &typhoon_unit.in_use) ? -EBUSY : 0;
+ return a->index ? -EINVAL : 0;
}
-static int typhoon_exclusive_release(struct file *file)
+static int vidioc_log_status(struct file *file, void *priv)
{
- clear_bit(0, &typhoon_unit.in_use);
+ 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 const struct v4l2_file_operations typhoon_fops = {
.owner = THIS_MODULE,
- .open = typhoon_exclusive_open,
- .release = typhoon_exclusive_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 +335,72 @@ 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);
-}
+ struct typhoon *dev = &typhoon_card;
+ struct v4l2_device *v4l2_dev = &dev->v4l2_dev;
+ int res;
-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 */
+ strlcpy(v4l2_dev->name, "typhoon", sizeof(v4l2_dev->name));
+ dev->io = io;
+ dev->curfreq = dev->mutefreq = mutefreq;
-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);
-
-#ifdef MODULE
-static unsigned long mutefreq;
-module_param(mutefreq, ulong, 0);
-MODULE_PARM_DESC(mutefreq, "Frequency used when muting the card (in kHz)");
-#endif
-
-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);
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.