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path: root/drivers/media/radio/radio-cadet.c
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Diffstat (limited to 'drivers/media/radio/radio-cadet.c')
-rw-r--r--drivers/media/radio/radio-cadet.c595
1 files changed, 295 insertions, 300 deletions
diff --git a/drivers/media/radio/radio-cadet.c b/drivers/media/radio/radio-cadet.c
index cb3075ac104c..d30fc0ce82c0 100644
--- a/drivers/media/radio/radio-cadet.c
+++ b/drivers/media/radio/radio-cadet.c
@@ -35,333 +35,318 @@
#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 <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);
+ 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);
}
- spin_unlock(&cadet_io_lock);
+ 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);
+ 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(rdsin==rdsout) {
+ 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 +355,40 @@ 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 +398,29 @@ 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 +428,26 @@ 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 +455,14 @@ 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 +473,17 @@ 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 +491,6 @@ 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 +499,52 @@ 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 +574,6 @@ 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 +584,7 @@ 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 +592,12 @@ 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 +613,23 @@ 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 +639,69 @@ 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=0x330, 0x332, 0x334,\n");
+ v4l2_err(v4l2_dev, "0x336, 0x338, 0x33a, 0x33c or 0x33e\n");
#endif
goto fail;
}
- if (!request_region(io,2,"cadet"))
+ if (!request_region(dev->io, 2, "cadet"))
+ goto fail;
+
+ 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;
- if (video_register_device(&cadet_radio, VFL_TYPE_RADIO, radio_nr) < 0) {
- release_region(io,2);
+ }
+
+ 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;
}
- printk(KERN_INFO "ADS Cadet Radio Card at 0x%x\n",io);
+ 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);
generated by cgit v1.2.3 (git 2.0.4) at 2024-11-09 10:50:45 +0000