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path: root/drivers/media/radio/radio-sf16fmi.c
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Diffstat (limited to 'drivers/media/radio/radio-sf16fmi.c')
-rw-r--r--drivers/media/radio/radio-sf16fmi.c283
1 files changed, 134 insertions, 149 deletions
diff --git a/drivers/media/radio/radio-sf16fmi.c b/drivers/media/radio/radio-sf16fmi.c
index d358e48c2422..f4784f0d1a88 100644
--- a/drivers/media/radio/radio-sf16fmi.c
+++ b/drivers/media/radio/radio-sf16fmi.c
@@ -22,113 +22,109 @@
#include <linux/init.h> /* Initdata */
#include <linux/ioport.h> /* request_region */
#include <linux/delay.h> /* udelay */
-#include <linux/videodev2.h> /* kernel radio structs */
-#include <media/v4l2-common.h>
-#include <media/v4l2-ioctl.h>
#include <linux/isapnp.h>
-#include <asm/io.h> /* outb, outb_p */
-#include <asm/uaccess.h> /* copy to/from user */
#include <linux/mutex.h>
+#include <linux/videodev2.h> /* kernel radio structs */
+#include <linux/io.h> /* outb, outb_p */
+#include <media/v4l2-device.h>
+#include <media/v4l2-ioctl.h>
-#define RADIO_VERSION KERNEL_VERSION(0,0,2)
+MODULE_AUTHOR("Petr Vandrovec, vandrove@vc.cvut.cz and M. Kirkwood");
+MODULE_DESCRIPTION("A driver for the SF16MI radio.");
+MODULE_LICENSE("GPL");
-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,
- }
-};
+static int io = -1;
+static int radio_nr = -1;
+
+module_param(io, int, 0);
+MODULE_PARM_DESC(io, "I/O address of the SF16MI card (0x284 or 0x384)");
+module_param(radio_nr, int, 0);
+
+#define RADIO_VERSION KERNEL_VERSION(0, 0, 2)
-struct fmi_device
+struct fmi
{
- unsigned long in_use;
- int port;
+ struct v4l2_device v4l2_dev;
+ struct video_device vdev;
+ int io;
int curvol; /* 1 or 0 */
unsigned long curfreq; /* freq in kHz */
__u32 flags;
+ struct mutex lock;
};
-static int io = -1;
-static int radio_nr = -1;
-static struct pnp_dev *dev = NULL;
-static struct mutex lock;
+static struct fmi fmi_card;
+static struct pnp_dev *dev;
/* freq is in 1/16 kHz to internal number, hw precision is 50 kHz */
/* It is only useful to give freq in intervall of 800 (=0.05Mhz),
* other bits will be truncated, e.g 92.7400016 -> 92.7, but
* 92.7400017 -> 92.75
*/
-#define RSF16_ENCODE(x) ((x)/800+214)
-#define RSF16_MINFREQ 87*16000
-#define RSF16_MAXFREQ 108*16000
+#define RSF16_ENCODE(x) ((x) / 800 + 214)
+#define RSF16_MINFREQ (87 * 16000)
+#define RSF16_MAXFREQ (108 * 16000)
-static void outbits(int bits, unsigned int data, int port)
+static void outbits(int bits, unsigned int data, int io)
{
- while(bits--) {
- if(data & 1) {
- outb(5, port);
+ while (bits--) {
+ if (data & 1) {
+ outb(5, io);
udelay(6);
- outb(7, port);
+ outb(7, io);
udelay(6);
} else {
- outb(1, port);
+ outb(1, io);
udelay(6);
- outb(3, port);
+ outb(3, io);
udelay(6);
}
- data>>=1;
+ data >>= 1;
}
}
-static inline void fmi_mute(int port)
+static inline void fmi_mute(struct fmi *fmi)
{
- mutex_lock(&lock);
- outb(0x00, port);
- mutex_unlock(&lock);
+ mutex_lock(&fmi->lock);
+ outb(0x00, fmi->io);
+ mutex_unlock(&fmi->lock);
}
-static inline void fmi_unmute(int port)
+static inline void fmi_unmute(struct fmi *fmi)
{
- mutex_lock(&lock);
- outb(0x08, port);
- mutex_unlock(&lock);
+ mutex_lock(&fmi->lock);
+ outb(0x08, fmi->io);
+ mutex_unlock(&fmi->lock);
}
-static inline int fmi_setfreq(struct fmi_device *dev)
+static inline int fmi_setfreq(struct fmi *fmi, unsigned long freq)
{
- int myport = dev->port;
- unsigned long freq = dev->curfreq;
+ mutex_lock(&fmi->lock);
+ fmi->curfreq = freq;
- mutex_lock(&lock);
-
- outbits(16, RSF16_ENCODE(freq), myport);
- outbits(8, 0xC0, myport);
+ outbits(16, RSF16_ENCODE(freq), fmi->io);
+ outbits(8, 0xC0, fmi->io);
msleep(143); /* was schedule_timeout(HZ/7) */
- mutex_unlock(&lock);
- if (dev->curvol) fmi_unmute(myport);
+ mutex_unlock(&fmi->lock);
+ if (fmi->curvol)
+ fmi_unmute(fmi);
return 0;
}
-static inline int fmi_getsigstr(struct fmi_device *dev)
+static inline int fmi_getsigstr(struct fmi *fmi)
{
int val;
int res;
- int myport = dev->port;
-
- mutex_lock(&lock);
- val = dev->curvol ? 0x08 : 0x00; /* unmute/mute */
- outb(val, myport);
- outb(val | 0x10, myport);
+ mutex_lock(&fmi->lock);
+ val = fmi->curvol ? 0x08 : 0x00; /* unmute/mute */
+ outb(val, fmi->io);
+ outb(val | 0x10, fmi->io);
msleep(143); /* was schedule_timeout(HZ/7) */
- res = (int)inb(myport+1);
- outb(val, myport);
+ res = (int)inb(fmi->io + 1);
+ outb(val, fmi->io);
- mutex_unlock(&lock);
+ mutex_unlock(&fmi->lock);
return (res & 2) ? 0 : 0xFFFF;
}
@@ -137,9 +133,9 @@ static int vidioc_querycap(struct file *file, void *priv,
{
strlcpy(v->driver, "radio-sf16fmi", sizeof(v->driver));
strlcpy(v->card, "SF16-FMx 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;
}
@@ -147,18 +143,18 @@ static int vidioc_g_tuner(struct file *file, void *priv,
struct v4l2_tuner *v)
{
int mult;
- struct fmi_device *fmi = video_drvdata(file);
+ struct fmi *fmi = 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;
mult = (fmi->flags & V4L2_TUNER_CAP_LOW) ? 1 : 1000;
- v->rangelow = RSF16_MINFREQ/mult;
- v->rangehigh = RSF16_MAXFREQ/mult;
+ v->rangelow = RSF16_MINFREQ / mult;
+ v->rangehigh = RSF16_MAXFREQ / mult;
v->rxsubchans = V4L2_TUNER_SUB_MONO | V4L2_TUNER_MODE_STEREO;
- v->capability = fmi->flags&V4L2_TUNER_CAP_LOW;
+ v->capability = fmi->flags & V4L2_TUNER_CAP_LOW;
v->audmode = V4L2_TUNER_MODE_STEREO;
v->signal = fmi_getsigstr(fmi);
return 0;
@@ -167,32 +163,29 @@ 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,
struct v4l2_frequency *f)
{
- struct fmi_device *fmi = video_drvdata(file);
+ struct fmi *fmi = video_drvdata(file);
if (!(fmi->flags & V4L2_TUNER_CAP_LOW))
f->frequency *= 1000;
if (f->frequency < RSF16_MINFREQ ||
- f->frequency > RSF16_MAXFREQ )
+ f->frequency > RSF16_MAXFREQ)
return -EINVAL;
- /*rounding in steps of 800 to match th freq
- that will be used */
- fmi->curfreq = (f->frequency/800)*800;
- fmi_setfreq(fmi);
+ /* rounding in steps of 800 to match the freq
+ that will be used */
+ fmi_setfreq(fmi, (f->frequency / 800) * 800);
return 0;
}
static int vidioc_g_frequency(struct file *file, void *priv,
struct v4l2_frequency *f)
{
- struct fmi_device *fmi = video_drvdata(file);
+ struct fmi *fmi = video_drvdata(file);
f->type = V4L2_TUNER_RADIO;
f->frequency = fmi->curfreq;
@@ -204,14 +197,9 @@ 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);
}
return -EINVAL;
}
@@ -219,7 +207,7 @@ static int vidioc_queryctrl(struct file *file, void *priv,
static int vidioc_g_ctrl(struct file *file, void *priv,
struct v4l2_control *ctrl)
{
- struct fmi_device *fmi = video_drvdata(file);
+ struct fmi *fmi = video_drvdata(file);
switch (ctrl->id) {
case V4L2_CID_AUDIO_MUTE:
@@ -232,31 +220,20 @@ 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 fmi_device *fmi = video_drvdata(file);
+ struct fmi *fmi = video_drvdata(file);
switch (ctrl->id) {
case V4L2_CID_AUDIO_MUTE:
if (ctrl->value)
- fmi_mute(fmi->port);
+ fmi_mute(fmi);
else
- fmi_unmute(fmi->port);
+ fmi_unmute(fmi);
fmi->curvol = 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;
@@ -265,36 +242,38 @@ 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 fmi_device fmi_unit;
+static int vidioc_s_audio(struct file *file, void *priv,
+ struct v4l2_audio *a)
+{
+ return a->index ? -EINVAL : 0;
+}
-static int fmi_exclusive_open(struct file *file)
+static int fmi_open(struct file *file)
{
- return test_and_set_bit(0, &fmi_unit.in_use) ? -EBUSY : 0;
+ return 0;
}
-static int fmi_exclusive_release(struct file *file)
+static int fmi_release(struct file *file)
{
- clear_bit(0, &fmi_unit.in_use);
return 0;
}
static const struct v4l2_file_operations fmi_fops = {
.owner = THIS_MODULE,
- .open = fmi_exclusive_open,
- .release = fmi_exclusive_release,
+ .open = fmi_open,
+ .release = fmi_release,
.ioctl = video_ioctl2,
};
@@ -313,13 +292,6 @@ static const struct v4l2_ioctl_ops fmi_ioctl_ops = {
.vidioc_s_ctrl = vidioc_s_ctrl,
};
-static struct video_device fmi_radio = {
- .name = "SF16FMx radio",
- .fops = &fmi_fops,
- .ioctl_ops = &fmi_ioctl_ops,
- .release = video_device_release_empty,
-};
-
/* ladis: this is my card. does any other types exist? */
static struct isapnp_device_id id_table[] __devinitdata = {
{ ISAPNP_ANY_ID, ISAPNP_ANY_ID,
@@ -344,7 +316,7 @@ static int __init isapnp_fmi_probe(void)
if (pnp_device_attach(dev) < 0)
return -EAGAIN;
if (pnp_activate_dev(dev) < 0) {
- printk ("radio-sf16fmi: PnP configure failed (out of resources?)\n");
+ printk(KERN_ERR "radio-sf16fmi: PnP configure failed (out of resources?)\n");
pnp_device_detach(dev);
return -ENOMEM;
}
@@ -354,59 +326,72 @@ static int __init isapnp_fmi_probe(void)
}
i = pnp_port_start(dev, 0);
- printk ("radio-sf16fmi: PnP reports card at %#x\n", i);
+ printk(KERN_INFO "radio-sf16fmi: PnP reports card at %#x\n", i);
return i;
}
static int __init fmi_init(void)
{
+ struct fmi *fmi = &fmi_card;
+ struct v4l2_device *v4l2_dev = &fmi->v4l2_dev;
+ int res;
+
if (io < 0)
io = isapnp_fmi_probe();
- if (io < 0) {
- printk(KERN_ERR "radio-sf16fmi: No PnP card found.\n");
- return io;
+ strlcpy(v4l2_dev->name, "sf16fmi", sizeof(v4l2_dev->name));
+ fmi->io = io;
+ if (fmi->io < 0) {
+ v4l2_err(v4l2_dev, "No PnP card found.\n");
+ return fmi->io;
}
if (!request_region(io, 2, "radio-sf16fmi")) {
- printk(KERN_ERR "radio-sf16fmi: port 0x%x already in use\n", io);
+ v4l2_err(v4l2_dev, "port 0x%x already in use\n", fmi->io);
pnp_device_detach(dev);
return -EBUSY;
}
- fmi_unit.port = io;
- fmi_unit.curvol = 0;
- fmi_unit.curfreq = 0;
- fmi_unit.flags = V4L2_TUNER_CAP_LOW;
- video_set_drvdata(&fmi_radio, &fmi_unit);
+ res = v4l2_device_register(NULL, v4l2_dev);
+ if (res < 0) {
+ release_region(fmi->io, 2);
+ pnp_device_detach(dev);
+ v4l2_err(v4l2_dev, "Could not register v4l2_device\n");
+ return res;
+ }
+
+ fmi->flags = V4L2_TUNER_CAP_LOW;
+ strlcpy(fmi->vdev.name, v4l2_dev->name, sizeof(fmi->vdev.name));
+ fmi->vdev.v4l2_dev = v4l2_dev;
+ fmi->vdev.fops = &fmi_fops;
+ fmi->vdev.ioctl_ops = &fmi_ioctl_ops;
+ fmi->vdev.release = video_device_release_empty;
+ video_set_drvdata(&fmi->vdev, fmi);
- mutex_init(&lock);
+ mutex_init(&fmi->lock);
- if (video_register_device(&fmi_radio, VFL_TYPE_RADIO, radio_nr) < 0) {
- release_region(io, 2);
+ if (video_register_device(&fmi->vdev, VFL_TYPE_RADIO, radio_nr) < 0) {
+ v4l2_device_unregister(v4l2_dev);
+ release_region(fmi->io, 2);
+ pnp_device_detach(dev);
return -EINVAL;
}
- printk(KERN_INFO "SF16FMx radio card driver at 0x%x\n", io);
+ v4l2_info(v4l2_dev, "card driver at 0x%x\n", fmi->io);
/* mute card - prevents noisy bootups */
- fmi_mute(io);
+ fmi_mute(fmi);
return 0;
}
-MODULE_AUTHOR("Petr Vandrovec, vandrove@vc.cvut.cz and M. Kirkwood");
-MODULE_DESCRIPTION("A driver for the SF16MI radio.");
-MODULE_LICENSE("GPL");
-
-module_param(io, int, 0);
-MODULE_PARM_DESC(io, "I/O address of the SF16MI card (0x284 or 0x384)");
-module_param(radio_nr, int, 0);
-
-static void __exit fmi_cleanup_module(void)
+static void __exit fmi_exit(void)
{
- video_unregister_device(&fmi_radio);
- release_region(io, 2);
+ struct fmi *fmi = &fmi_card;
+
+ video_unregister_device(&fmi->vdev);
+ v4l2_device_unregister(&fmi->v4l2_dev);
+ release_region(fmi->io, 2);
if (dev)
pnp_device_detach(dev);
}
module_init(fmi_init);
-module_exit(fmi_cleanup_module);
+module_exit(fmi_exit);
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-27 19:24:39 +0100