Skip to content

L
linux
Commit bec2aec5 authored by Hans Verkuil's avatar Hans Verkuil Committed by Mauro Carvalho Chehab
Browse files
Options

V4L/DVB (10882): radio-cadet: convert to v4l2_device. 

Signed-off-by: default avatarHans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@redhat.com>
parent e697e12e
Show whitespace changes
Inline Side-by-side
Showing with 295 additions and 300 deletions
drivers/media/radio/radio-cadet.c
View file @ bec2aec5
......@@ -35,333 +35,319 @@
#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> /* V4L2 API defs */
#include <media/v4l2-common.h>
#include <media/v4l2-ioctl.h>
#include <linux/param.h>
#include <linux/pnp.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>
MODULE_AUTHOR("Fred Gleason, Russell Kroll, Quay Lu, Donald Song, Jason Lewis, Scott McGrath, William McGrath");
MODULE_DESCRIPTION("A driver for the ADS Cadet AM/FM/RDS radio card.");
MODULE_LICENSE("GPL");
static int io = -1; /* default to isapnp activation */
static int radio_nr = -1;
module_param(io, int, 0);
MODULE_PARM_DESC(io, "I/O address of Cadet card (0x330,0x332,0x334,0x336,0x338,0x33a,0x33c,0x33e)");
module_param(radio_nr, int, 0);
#define CADET_VERSION KERNEL_VERSION(0, 3, 3)
#define RDS_BUFFER 256
#define RDS_RX_FLAG 1
#define MBS_RX_FLAG 2
#define CADET_VERSION KERNEL_VERSION(0,3,3)
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 = 0xff,
.step = 1,
.default_value = 0xff,
.type = V4L2_CTRL_TYPE_INTEGER,
}
struct cadet {
struct v4l2_device v4l2_dev;
struct video_device vdev;
int io;
int users;
int curtuner;
int tunestat;
int sigstrength;
wait_queue_head_t read_queue;
struct timer_list readtimer;
__u8 rdsin, rdsout, rdsstat;
unsigned char rdsbuf[RDS_BUFFER];
struct mutex lock;
int reading;
};
static int io=-1; /* default to isapnp activation */
static int radio_nr = -1;
static int users;
static int curtuner;
static int tunestat;
static int sigstrength;
static wait_queue_head_t read_queue;
static struct timer_list readtimer;
static __u8 rdsin, rdsout, rdsstat;
static unsigned char rdsbuf[RDS_BUFFER];
static spinlock_t cadet_io_lock;
static int cadet_probe(void);
static struct cadet cadet_card;
/*
* Signal Strength Threshold Values
* The V4L API spec does not define any particular unit for the signal
* strength value. These values are in microvolts of RF at the tuner's input.
*/
static __u16 sigtable[2][4]={{5,10,30,150},{28,40,63,1000}};
static __u16 sigtable[2][4] = {
{ 5, 10, 30, 150 },
{ 28, 40, 63, 1000 }
};
static int
cadet_getstereo(void)
static int cadet_getstereo(struct cadet *dev)
{
int ret = V4L2_TUNER_SUB_MONO;
if(curtuner != 0) /* Only FM has stereo capability! */
if (dev->curtuner != 0) /* Only FM has stereo capability! */
return V4L2_TUNER_SUB_MONO;
spin_lock(&cadet_io_lock);
outb(7,io); /* Select tuner control */
if( (inb(io+1) & 0x40) == 0)
mutex_lock(&dev->lock);
outb(7, dev->io); /* Select tuner control */
if ((inb(dev->io + 1) & 0x40) == 0)
ret = V4L2_TUNER_SUB_STEREO;
spin_unlock(&cadet_io_lock);
mutex_unlock(&dev->lock);
return ret;
}
static unsigned
cadet_gettune(void)
static unsigned cadet_gettune(struct cadet *dev)
{
int curvol,i;
unsigned fifo=0;
int curvol, i;
unsigned fifo = 0;
/*
* Prepare for read
*/
spin_lock(&cadet_io_lock);
mutex_lock(&dev->lock);
outb(7,io); /* Select tuner control */
curvol=inb(io+1); /* Save current volume/mute setting */
outb(0x00,io+1); /* Ensure WRITE-ENABLE is LOW */
tunestat=0xffff;
outb(7, dev->io); /* Select tuner control */
curvol = inb(dev->io + 1); /* Save current volume/mute setting */
outb(0x00, dev->io + 1); /* Ensure WRITE-ENABLE is LOW */
dev->tunestat = 0xffff;
/*
* Read the shift register
*/
for(i=0;i<25;i++) {
fifo=(fifo<<1)|((inb(io+1)>>7)&0x01);
if(i<24) {
outb(0x01,io+1);
tunestat&=inb(io+1);
outb(0x00,io+1);
for (i = 0; i < 25; i++) {
fifo = (fifo << 1) | ((inb(dev->io + 1) >> 7) & 0x01);
if (i < 24) {
outb(0x01, dev->io + 1);
dev->tunestat &= inb(dev->io + 1);
outb(0x00, dev->io + 1);
}
}
/*
* Restore volume/mute setting
*/
outb(curvol,io+1);
spin_unlock(&cadet_io_lock);
outb(curvol, dev->io + 1);
mutex_unlock(&dev->lock);
return fifo;
}
static unsigned
cadet_getfreq(void)
static unsigned cadet_getfreq(struct cadet *dev)
{
int i;
unsigned freq=0,test,fifo=0;
unsigned freq = 0, test, fifo = 0;
/*
* Read current tuning
*/
fifo=cadet_gettune();
fifo = cadet_gettune(dev);
/*
* Convert to actual frequency
*/
if(curtuner==0) { /* FM */
test=12500;
for(i=0;i<14;i++) {
if((fifo&0x01)!=0) {
freq+=test;
}
test=test<<1;
fifo=fifo>>1;
if (dev->curtuner == 0) { /* FM */
test = 12500;
for (i = 0; i < 14; i++) {
if ((fifo & 0x01) != 0)
freq += test;
test = test << 1;
fifo = fifo >> 1;
}
freq-=10700000; /* IF frequency is 10.7 MHz */
freq=(freq*16)/1000000; /* Make it 1/16 MHz */
}
if(curtuner==1) { /* AM */
freq=((fifo&0x7fff)-2010)*16;
freq -= 10700000; /* IF frequency is 10.7 MHz */
freq = (freq * 16) / 1000000; /* Make it 1/16 MHz */
}
if (dev->curtuner == 1) /* AM */
freq = ((fifo & 0x7fff) - 2010) * 16;
return freq;
}
static void
cadet_settune(unsigned fifo)
static void cadet_settune(struct cadet *dev, unsigned fifo)
{
int i;
unsigned test;
spin_lock(&cadet_io_lock);
mutex_lock(&dev->lock);
outb(7,io); /* Select tuner control */
outb(7, dev->io); /* Select tuner control */
/*
* Write the shift register
*/
test=0;
test=(fifo>>23)&0x02; /* Align data for SDO */
test|=0x1c; /* SDM=1, SWE=1, SEN=1, SCK=0 */
outb(7,io); /* Select tuner control */
outb(test,io+1); /* Initialize for write */
for(i=0;i<25;i++) {
test|=0x01; /* Toggle SCK High */
outb(test,io+1);
test&=0xfe; /* Toggle SCK Low */
outb(test,io+1);
fifo=fifo<<1; /* Prepare the next bit */
test=0x1c|((fifo>>23)&0x02);
outb(test,io+1);
}
spin_unlock(&cadet_io_lock);
test = 0;
test = (fifo >> 23) & 0x02; /* Align data for SDO */
test |= 0x1c; /* SDM=1, SWE=1, SEN=1, SCK=0 */
outb(7, dev->io); /* Select tuner control */
outb(test, dev->io + 1); /* Initialize for write */
for (i = 0; i < 25; i++) {
test |= 0x01; /* Toggle SCK High */
outb(test, dev->io + 1);
test &= 0xfe; /* Toggle SCK Low */
outb(test, dev->io + 1);
fifo = fifo << 1; /* Prepare the next bit */
test = 0x1c | ((fifo >> 23) & 0x02);
outb(test, dev->io + 1);
}
mutex_unlock(&dev->lock);
}
static void
cadet_setfreq(unsigned freq)
static void cadet_setfreq(struct cadet *dev, unsigned freq)
{
unsigned fifo;
int i,j,test;
int i, j, test;
int curvol;
/*
* Formulate a fifo command
*/
fifo=0;
if(curtuner==0) { /* FM */
test=102400;
freq=(freq*1000)/16; /* Make it kHz */
freq+=10700; /* IF is 10700 kHz */
for(i=0;i<14;i++) {
fifo=fifo<<1;
if(freq>=test) {
fifo|=0x01;
freq-=test;
fifo = 0;
if (dev->curtuner == 0) { /* FM */
test = 102400;
freq = (freq * 1000) / 16; /* Make it kHz */
freq += 10700; /* IF is 10700 kHz */
for (i = 0; i < 14; i++) {
fifo = fifo << 1;
if (freq >= test) {
fifo |= 0x01;
freq -= test;
}
test=test>>1;
test = test >> 1;
}
}
if(curtuner==1) { /* AM */
fifo=(freq/16)+2010; /* Make it kHz */
fifo|=0x100000; /* Select AM Band */
if (dev->curtuner == 1) { /* AM */
fifo = (freq / 16) + 2010; /* Make it kHz */
fifo |= 0x100000; /* Select AM Band */
}
/*
* Save current volume/mute setting
*/
spin_lock(&cadet_io_lock);
outb(7,io); /* Select tuner control */
curvol=inb(io+1);
spin_unlock(&cadet_io_lock);
mutex_lock(&dev->lock);
outb(7, dev->io); /* Select tuner control */
curvol = inb(dev->io + 1);
mutex_unlock(&dev->lock);
/*
* Tune the card
*/
for(j=3;j>-1;j--) {
cadet_settune(fifo|(j<<16));
for (j = 3; j > -1; j--) {
cadet_settune(dev, fifo | (j << 16));
spin_lock(&cadet_io_lock);
outb(7,io); /* Select tuner control */
outb(curvol,io+1);
spin_unlock(&cadet_io_lock);
mutex_lock(&dev->lock);
outb(7, dev->io); /* Select tuner control */
outb(curvol, dev->io + 1);
mutex_unlock(&dev->lock);
msleep(100);
cadet_gettune();
if((tunestat & 0x40) == 0) { /* Tuned */
sigstrength=sigtable[curtuner][j];
cadet_gettune(dev);
if ((dev->tunestat & 0x40) == 0) { /* Tuned */
dev->sigstrength = sigtable[dev->curtuner][j];
return;
}
}
sigstrength=0;
dev->sigstrength = 0;
}
static int
cadet_getvol(void)
static int cadet_getvol(struct cadet *dev)
{
int ret = 0;
spin_lock(&cadet_io_lock);
mutex_lock(&dev->lock);
outb(7,io); /* Select tuner control */
if((inb(io + 1) & 0x20) != 0)
outb(7, dev->io); /* Select tuner control */
if ((inb(dev->io + 1) & 0x20) != 0)
ret = 0xffff;
spin_unlock(&cadet_io_lock);
mutex_unlock(&dev->lock);
return ret;
}
static void
cadet_setvol(int vol)
static void cadet_setvol(struct cadet *dev, int vol)
{
spin_lock(&cadet_io_lock);
outb(7,io); /* Select tuner control */
if(vol>0)
outb(0x20,io+1);
mutex_lock(&dev->lock);
outb(7, dev->io); /* Select tuner control */
if (vol > 0)
outb(0x20, dev->io + 1);
else
outb(0x00,io+1);
spin_unlock(&cadet_io_lock);
outb(0x00, dev->io + 1);
mutex_unlock(&dev->lock);
}
static void
cadet_handler(unsigned long data)
static void cadet_handler(unsigned long data)
{
/*
* Service the RDS fifo
*/
struct cadet *dev = (void *)data;
if(spin_trylock(&cadet_io_lock))
{
outb(0x3,io); /* Select RDS Decoder Control */
if((inb(io+1)&0x20)!=0) {
/* Service the RDS fifo */
if (mutex_trylock(&dev->lock)) {
outb(0x3, dev->io); /* Select RDS Decoder Control */
if ((inb(dev->io + 1) & 0x20) != 0)
printk(KERN_CRIT "cadet: RDS fifo overflow\n");
}
outb(0x80,io); /* Select RDS fifo */
while((inb(io)&0x80)!=0) {
rdsbuf[rdsin]=inb(io+1);
if(rdsin==rdsout)
outb(0x80, dev->io); /* Select RDS fifo */
while ((inb(dev->io) & 0x80) != 0) {
dev->rdsbuf[dev->rdsin] = inb(dev->io + 1);
if (dev->rdsin == dev->rdsout)
printk(KERN_WARNING "cadet: RDS buffer overflow\n");
else
rdsin++;
dev->rdsin++;
}
spin_unlock(&cadet_io_lock);
mutex_unlock(&dev->lock);
}
/*
* Service pending read
*/
if( rdsin!=rdsout)
wake_up_interruptible(&read_queue);
if (dev->rdsin != dev->rdsout)
wake_up_interruptible(&dev->read_queue);
/*
* Clean up and exit
*/
init_timer(&readtimer);
readtimer.function=cadet_handler;
readtimer.data=(unsigned long)0;
readtimer.expires=jiffies+msecs_to_jiffies(50);
add_timer(&readtimer);
init_timer(&dev->readtimer);
dev->readtimer.function = cadet_handler;
dev->readtimer.data = (unsigned long)0;
dev->readtimer.expires = jiffies + msecs_to_jiffies(50);
add_timer(&dev->readtimer);
}
static ssize_t
cadet_read(struct file *file, char __user *data, size_t count, loff_t *ppos)
static ssize_t cadet_read(struct file *file, char __user *data, size_t count, loff_t *ppos)
{
int i=0;
struct cadet *dev = video_drvdata(file);
unsigned char readbuf[RDS_BUFFER];
if(rdsstat==0) {
spin_lock(&cadet_io_lock);
rdsstat=1;
outb(0x80,io); /* Select RDS fifo */
spin_unlock(&cadet_io_lock);
init_timer(&readtimer);
readtimer.function=cadet_handler;
readtimer.data=(unsigned long)0;
readtimer.expires=jiffies+msecs_to_jiffies(50);
add_timer(&readtimer);
}
if(rdsin==rdsout) {
int i = 0;
if (dev->rdsstat == 0) {
mutex_lock(&dev->lock);
dev->rdsstat = 1;
outb(0x80, dev->io); /* Select RDS fifo */
mutex_unlock(&dev->lock);
init_timer(&dev->readtimer);
dev->readtimer.function = cadet_handler;
dev->readtimer.data = (unsigned long)dev;
dev->readtimer.expires = jiffies + msecs_to_jiffies(50);
add_timer(&dev->readtimer);
}
if (dev->rdsin == dev->rdsout) {
if (file->f_flags & O_NONBLOCK)
return -EWOULDBLOCK;
interruptible_sleep_on(&read_queue);
interruptible_sleep_on(&dev->read_queue);
}
while( i<count && rdsin!=rdsout)
readbuf[i++]=rdsbuf[rdsout++];
while (i < count && dev->rdsin != dev->rdsout)
readbuf[i++] = dev->rdsbuf[dev->rdsout++];
if (copy_to_user(data,readbuf,i))
if (copy_to_user(data, readbuf, i))
return -EFAULT;
return i;
}
......@@ -370,38 +356,40 @@ cadet_read(struct file *file, char __user *data, size_t count, loff_t *ppos)
static int vidioc_querycap(struct file *file, void *priv,
struct v4l2_capability *v)
{
v->capabilities =
V4L2_CAP_TUNER |
V4L2_CAP_READWRITE;
strlcpy(v->driver, "ADS Cadet", sizeof(v->driver));
strlcpy(v->card, "ADS Cadet", sizeof(v->card));
strlcpy(v->bus_info, "ISA", sizeof(v->bus_info));
v->version = CADET_VERSION;
strcpy(v->driver, "ADS Cadet");
strcpy(v->card, "ADS Cadet");
v->capabilities = V4L2_CAP_TUNER | V4L2_CAP_RADIO | V4L2_CAP_READWRITE;
return 0;
}
static int vidioc_g_tuner(struct file *file, void *priv,
struct v4l2_tuner *v)
{
struct cadet *dev = video_drvdata(file);
v->type = V4L2_TUNER_RADIO;
switch (v->index) {
case 0:
strcpy(v->name, "FM");
strlcpy(v->name, "FM", sizeof(v->name));
v->capability = V4L2_TUNER_CAP_STEREO;
v->rangelow = 1400; /* 87.5 MHz */
v->rangehigh = 1728; /* 108.0 MHz */
v->rxsubchans=cadet_getstereo();
switch (v->rxsubchans){
v->rxsubchans = cadet_getstereo(dev);
switch (v->rxsubchans) {
case V4L2_TUNER_SUB_MONO:
v->audmode = V4L2_TUNER_MODE_MONO;
break;
case V4L2_TUNER_SUB_STEREO:
v->audmode = V4L2_TUNER_MODE_STEREO;
break;
default: ;
default:
break;
}
break;
case 1:
strcpy(v->name, "AM");
strlcpy(v->name, "AM", sizeof(v->name));
v->capability = V4L2_TUNER_CAP_LOW;
v->rangelow = 8320; /* 520 kHz */
v->rangehigh = 26400; /* 1650 kHz */
......@@ -411,25 +399,29 @@ static int vidioc_g_tuner(struct file *file, void *priv,
default:
return -EINVAL;
}
v->signal = sigstrength; /* We might need to modify scaling of this */
v->signal = dev->sigstrength; /* We might need to modify scaling of this */
return 0;
}
static int vidioc_s_tuner(struct file *file, void *priv,
struct v4l2_tuner *v)
{
if((v->index != 0)&&(v->index != 1))
struct cadet *dev = video_drvdata(file);
if (v->index != 0 && v->index != 1)
return -EINVAL;
curtuner = v->index;
dev->curtuner = v->index;
return 0;
}
static int vidioc_g_frequency(struct file *file, void *priv,
struct v4l2_frequency *f)
{
f->tuner = curtuner;
struct cadet *dev = video_drvdata(file);
f->tuner = dev->curtuner;
f->type = V4L2_TUNER_RADIO;
f->frequency = cadet_getfreq();
f->frequency = cadet_getfreq(dev);
return 0;
}
......@@ -437,27 +429,26 @@ 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 cadet *dev = video_drvdata(file);
if (f->type != V4L2_TUNER_RADIO)
return -EINVAL;
if((curtuner==0)&&((f->frequency<1400)||(f->frequency>1728)))
if (dev->curtuner == 0 && (f->frequency < 1400 || f->frequency > 1728))
return -EINVAL;
if((curtuner==1)&&((f->frequency<8320)||(f->frequency>26400)))
if (dev->curtuner == 1 && (f->frequency < 8320 || f->frequency > 26400))
return -EINVAL;
cadet_setfreq(f->frequency);
cadet_setfreq(dev, f->frequency);
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, 0xff, 1, 0xff);
}
return -EINVAL;
}
......@@ -465,12 +456,14 @@ static int vidioc_queryctrl(struct file *file, void *priv,
static int vidioc_g_ctrl(struct file *file, void *priv,
struct v4l2_control *ctrl)
{
switch (ctrl->id){
struct cadet *dev = video_drvdata(file);
switch (ctrl->id) {
case V4L2_CID_AUDIO_MUTE: /* TODO: Handle this correctly */
ctrl->value = (cadet_getvol() == 0);
ctrl->value = (cadet_getvol(dev) == 0);
break;
case V4L2_CID_AUDIO_VOLUME:
ctrl->value = cadet_getvol();
ctrl->value = cadet_getvol(dev);
break;
default:
return -EINVAL;
......@@ -481,15 +474,17 @@ 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 cadet *dev = video_drvdata(file);
switch (ctrl->id){
case V4L2_CID_AUDIO_MUTE: /* TODO: Handle this correctly */
if (ctrl->value)
cadet_setvol(0);
cadet_setvol(dev, 0);
else
cadet_setvol(0xffff);
cadet_setvol(dev, 0xffff);
break;
case V4L2_CID_AUDIO_VOLUME:
cadet_setvol(ctrl->value);
cadet_setvol(dev, ctrl->value);
break;
default:
return -EINVAL;
......@@ -497,16 +492,6 @@ static int vidioc_s_ctrl(struct file *file, void *priv,
return 0;
}
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;
......@@ -515,43 +500,52 @@ 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 int
cadet_open(struct file *file)
static int cadet_open(struct file *file)
{
users++;
if (1 == users) init_waitqueue_head(&read_queue);
struct cadet *dev = video_drvdata(file);
dev->users++;
if (1 == dev->users)
init_waitqueue_head(&dev->read_queue);
return 0;
}
static int
cadet_release(struct file *file)
static int cadet_release(struct file *file)
{
users--;
if (0 == users){
del_timer_sync(&readtimer);
rdsstat=0;
struct cadet *dev = video_drvdata(file);
dev->users--;
if (0 == dev->users) {
del_timer_sync(&dev->readtimer);
dev->rdsstat = 0;
}
return 0;
}
static unsigned int
cadet_poll(struct file *file, struct poll_table_struct *wait)
static unsigned int cadet_poll(struct file *file, struct poll_table_struct *wait)
{
poll_wait(file,&read_queue,wait);
if(rdsin != rdsout)
struct cadet *dev = video_drvdata(file);
poll_wait(file, &dev->read_queue, wait);
if (dev->rdsin != dev->rdsout)
return POLLIN | POLLRDNORM;
return 0;
}
......@@ -581,13 +575,6 @@ static const struct v4l2_ioctl_ops cadet_ioctl_ops = {
.vidioc_s_input = vidioc_s_input,
};
static struct video_device cadet_radio = {
.name = "Cadet radio",
.fops = &cadet_fops,
.ioctl_ops = &cadet_ioctl_ops,
.release = video_device_release_empty,
};
#ifdef CONFIG_PNP
static struct pnp_device_id cadet_pnp_devices[] = {
......@@ -598,7 +585,7 @@ static struct pnp_device_id cadet_pnp_devices[] = {
MODULE_DEVICE_TABLE(pnp, cadet_pnp_devices);
static int cadet_pnp_probe(struct pnp_dev * dev, const struct pnp_device_id *dev_id)
static int cadet_pnp_probe(struct pnp_dev *dev, const struct pnp_device_id *dev_id)
{
if (!dev)
return -ENODEV;
......@@ -606,13 +593,12 @@ static int cadet_pnp_probe(struct pnp_dev * dev, const struct pnp_device_id *dev
if (io > 0)
return -EBUSY;
if (!pnp_port_valid(dev, 0)) {
if (!pnp_port_valid(dev, 0))
return -ENODEV;
}
io = pnp_port_start(dev, 0);
printk ("radio-cadet: PnP reports device at %#x\n", io);
printk(KERN_INFO "radio-cadet: PnP reports device at %#x\n", io);
return io;
}
......@@ -628,23 +614,23 @@ static struct pnp_driver cadet_pnp_driver = {
static struct pnp_driver cadet_pnp_driver;
#endif
static int cadet_probe(void)
static void cadet_probe(struct cadet *dev)
{
static int iovals[8]={0x330,0x332,0x334,0x336,0x338,0x33a,0x33c,0x33e};
static int iovals[8] = { 0x330, 0x332, 0x334, 0x336, 0x338, 0x33a, 0x33c, 0x33e };
int i;
for(i=0;i<8;i++) {
io=iovals[i];
if (request_region(io, 2, "cadet-probe")) {
cadet_setfreq(1410);
if(cadet_getfreq()==1410) {
release_region(io, 2);
return io;
for (i = 0; i < 8; i++) {
dev->io = iovals[i];
if (request_region(dev->io, 2, "cadet-probe")) {
cadet_setfreq(dev, 1410);
if (cadet_getfreq(dev) == 1410) {
release_region(dev->io, 2);
return;
}
release_region(io, 2);
release_region(dev->io, 2);
}
}
return -1;
dev->io = -1;
}
/*
......@@ -654,59 +640,68 @@ static int cadet_probe(void)
static int __init cadet_init(void)
{
spin_lock_init(&cadet_io_lock);
struct cadet *dev = &cadet_card;
struct v4l2_device *v4l2_dev = &dev->v4l2_dev;
int res;
/*
* If a probe was requested then probe ISAPnP first (safest)
*/
strlcpy(v4l2_dev->name, "cadet", sizeof(v4l2_dev->name));
mutex_init(&dev->lock);
/* If a probe was requested then probe ISAPnP first (safest) */
if (io < 0)
pnp_register_driver(&cadet_pnp_driver);
/*
* If that fails then probe unsafely if probe is requested
*/
if(io < 0)
io = cadet_probe ();
dev->io = io;
/*
* Else we bail out
*/
/* If that fails then probe unsafely if probe is requested */
if (dev->io < 0)
cadet_probe(dev);
if(io < 0) {
/* Else we bail out */
if (dev->io < 0) {
#ifdef MODULE
printk(KERN_ERR "You must set an I/O address with io=0x???\n");
v4l2_err(v4l2_dev, "you must set an I/O address with io=0x???\n");
#endif
goto fail;
}
if (!request_region(io,2,"cadet"))
if (!request_region(dev->io, 2, "cadet"))
goto fail;
if (video_register_device(&cadet_radio, VFL_TYPE_RADIO, radio_nr) < 0) {
release_region(io,2);
res = v4l2_device_register(NULL, v4l2_dev);
if (res < 0) {
release_region(dev->io, 2);
v4l2_err(v4l2_dev, "could not register v4l2_device\n");
goto fail;
}
printk(KERN_INFO "ADS Cadet Radio Card at 0x%x\n",io);
strlcpy(dev->vdev.name, v4l2_dev->name, sizeof(dev->vdev.name));
dev->vdev.v4l2_dev = v4l2_dev;
dev->vdev.fops = &cadet_fops;
dev->vdev.ioctl_ops = &cadet_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(v4l2_dev);
release_region(dev->io, 2);
goto fail;
}
v4l2_info(v4l2_dev, "ADS Cadet Radio Card at 0x%x\n", dev->io);
return 0;
fail:
pnp_unregister_driver(&cadet_pnp_driver);
return -1;
return -ENODEV;
}
MODULE_AUTHOR("Fred Gleason, Russell Kroll, Quay Lu, Donald Song, Jason Lewis, Scott McGrath, William McGrath");
MODULE_DESCRIPTION("A driver for the ADS Cadet AM/FM/RDS radio card.");
MODULE_LICENSE("GPL");
module_param(io, int, 0);
MODULE_PARM_DESC(io, "I/O address of Cadet card (0x330,0x332,0x334,0x336,0x338,0x33a,0x33c,0x33e)");
module_param(radio_nr, int, 0);
static void __exit cadet_cleanup_module(void)
static void __exit cadet_exit(void)
{
video_unregister_device(&cadet_radio);
release_region(io,2);
struct cadet *dev = &cadet_card;
video_unregister_device(&dev->vdev);
v4l2_device_unregister(&dev->v4l2_dev);
release_region(dev->io, 2);
pnp_unregister_driver(&cadet_pnp_driver);
}
module_init(cadet_init);
module_exit(cadet_cleanup_module);
module_exit(cadet_exit);
Markdown is supported
0% or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment
GitLab Nexedi Edition | About GitLab | About Nexedi | 沪ICP备2021021310号-2 | 沪ICP备2021021310号-7