mirror of
https://github.com/edk2-porting/linux-next.git
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V4L/DVB (10882): radio-cadet: convert to v4l2_device.
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Hans Verkuil
Mauro Carvalho Chehab
parent
e697e12ece
commit
bec2aec565
@ -35,78 +35,76 @@
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#include <linux/init.h> /* Initdata */
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#include <linux/ioport.h> /* request_region */
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#include <linux/delay.h> /* udelay */
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#include <asm/io.h> /* outb, outb_p */
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#include <asm/uaccess.h> /* copy to/from user */
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#include <linux/videodev2.h> /* V4L2 API defs */
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#include <media/v4l2-common.h>
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#include <media/v4l2-ioctl.h>
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#include <linux/param.h>
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#include <linux/pnp.h>
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#include <linux/io.h> /* outb, outb_p */
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#include <linux/uaccess.h> /* copy to/from user */
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#include <media/v4l2-device.h>
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#include <media/v4l2-ioctl.h>
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MODULE_AUTHOR("Fred Gleason, Russell Kroll, Quay Lu, Donald Song, Jason Lewis, Scott McGrath, William McGrath");
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MODULE_DESCRIPTION("A driver for the ADS Cadet AM/FM/RDS radio card.");
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MODULE_LICENSE("GPL");
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static int io = -1; /* default to isapnp activation */
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static int radio_nr = -1;
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module_param(io, int, 0);
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MODULE_PARM_DESC(io, "I/O address of Cadet card (0x330,0x332,0x334,0x336,0x338,0x33a,0x33c,0x33e)");
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module_param(radio_nr, int, 0);
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#define CADET_VERSION KERNEL_VERSION(0, 3, 3)
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#define RDS_BUFFER 256
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#define RDS_RX_FLAG 1
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#define MBS_RX_FLAG 2
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#define CADET_VERSION KERNEL_VERSION(0,3,3)
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static struct v4l2_queryctrl radio_qctrl[] = {
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{
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.id = V4L2_CID_AUDIO_MUTE,
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.name = "Mute",
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.minimum = 0,
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.maximum = 1,
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.default_value = 1,
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.type = V4L2_CTRL_TYPE_BOOLEAN,
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},{
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.id = V4L2_CID_AUDIO_VOLUME,
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.name = "Volume",
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.minimum = 0,
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.maximum = 0xff,
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.step = 1,
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.default_value = 0xff,
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.type = V4L2_CTRL_TYPE_INTEGER,
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}
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struct cadet {
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struct v4l2_device v4l2_dev;
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struct video_device vdev;
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int io;
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int users;
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int curtuner;
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int tunestat;
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int sigstrength;
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wait_queue_head_t read_queue;
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struct timer_list readtimer;
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__u8 rdsin, rdsout, rdsstat;
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unsigned char rdsbuf[RDS_BUFFER];
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struct mutex lock;
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int reading;
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};
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static int io=-1; /* default to isapnp activation */
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static int radio_nr = -1;
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static int users;
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static int curtuner;
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static int tunestat;
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static int sigstrength;
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static wait_queue_head_t read_queue;
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static struct timer_list readtimer;
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static __u8 rdsin, rdsout, rdsstat;
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static unsigned char rdsbuf[RDS_BUFFER];
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static spinlock_t cadet_io_lock;
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static int cadet_probe(void);
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static struct cadet cadet_card;
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/*
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* Signal Strength Threshold Values
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* The V4L API spec does not define any particular unit for the signal
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* strength value. These values are in microvolts of RF at the tuner's input.
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*/
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static __u16 sigtable[2][4]={{5,10,30,150},{28,40,63,1000}};
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static __u16 sigtable[2][4] = {
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{ 5, 10, 30, 150 },
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{ 28, 40, 63, 1000 }
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};
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static int
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cadet_getstereo(void)
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static int cadet_getstereo(struct cadet *dev)
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{
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int ret = V4L2_TUNER_SUB_MONO;
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if(curtuner != 0) /* Only FM has stereo capability! */
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if (dev->curtuner != 0) /* Only FM has stereo capability! */
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return V4L2_TUNER_SUB_MONO;
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spin_lock(&cadet_io_lock);
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outb(7,io); /* Select tuner control */
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if( (inb(io+1) & 0x40) == 0)
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mutex_lock(&dev->lock);
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outb(7, dev->io); /* Select tuner control */
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if ((inb(dev->io + 1) & 0x40) == 0)
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ret = V4L2_TUNER_SUB_STEREO;
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spin_unlock(&cadet_io_lock);
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mutex_unlock(&dev->lock);
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return ret;
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}
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static unsigned
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cadet_gettune(void)
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static unsigned cadet_gettune(struct cadet *dev)
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{
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int curvol, i;
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unsigned fifo = 0;
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@ -115,36 +113,35 @@ cadet_gettune(void)
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* Prepare for read
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*/
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spin_lock(&cadet_io_lock);
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mutex_lock(&dev->lock);
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outb(7,io); /* Select tuner control */
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curvol=inb(io+1); /* Save current volume/mute setting */
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outb(0x00,io+1); /* Ensure WRITE-ENABLE is LOW */
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tunestat=0xffff;
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outb(7, dev->io); /* Select tuner control */
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curvol = inb(dev->io + 1); /* Save current volume/mute setting */
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outb(0x00, dev->io + 1); /* Ensure WRITE-ENABLE is LOW */
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dev->tunestat = 0xffff;
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/*
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* Read the shift register
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*/
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for (i = 0; i < 25; i++) {
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fifo=(fifo<<1)|((inb(io+1)>>7)&0x01);
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fifo = (fifo << 1) | ((inb(dev->io + 1) >> 7) & 0x01);
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if (i < 24) {
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outb(0x01,io+1);
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tunestat&=inb(io+1);
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outb(0x00,io+1);
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outb(0x01, dev->io + 1);
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dev->tunestat &= inb(dev->io + 1);
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outb(0x00, dev->io + 1);
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}
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}
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/*
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* Restore volume/mute setting
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*/
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outb(curvol,io+1);
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spin_unlock(&cadet_io_lock);
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outb(curvol, dev->io + 1);
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mutex_unlock(&dev->lock);
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return fifo;
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}
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static unsigned
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cadet_getfreq(void)
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static unsigned cadet_getfreq(struct cadet *dev)
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{
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int i;
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unsigned freq = 0, test, fifo = 0;
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@ -152,61 +149,57 @@ cadet_getfreq(void)
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/*
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* Read current tuning
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*/
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fifo=cadet_gettune();
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fifo = cadet_gettune(dev);
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/*
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* Convert to actual frequency
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*/
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if(curtuner==0) { /* FM */
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if (dev->curtuner == 0) { /* FM */
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test = 12500;
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for (i = 0; i < 14; i++) {
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if((fifo&0x01)!=0) {
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if ((fifo & 0x01) != 0)
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freq += test;
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}
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test = test << 1;
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fifo = fifo >> 1;
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}
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freq -= 10700000; /* IF frequency is 10.7 MHz */
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freq = (freq * 16) / 1000000; /* Make it 1/16 MHz */
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}
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if(curtuner==1) { /* AM */
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if (dev->curtuner == 1) /* AM */
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freq = ((fifo & 0x7fff) - 2010) * 16;
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}
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return freq;
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}
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static void
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cadet_settune(unsigned fifo)
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static void cadet_settune(struct cadet *dev, unsigned fifo)
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{
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int i;
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unsigned test;
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spin_lock(&cadet_io_lock);
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mutex_lock(&dev->lock);
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outb(7,io); /* Select tuner control */
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outb(7, dev->io); /* Select tuner control */
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/*
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* Write the shift register
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*/
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test = 0;
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test = (fifo >> 23) & 0x02; /* Align data for SDO */
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test |= 0x1c; /* SDM=1, SWE=1, SEN=1, SCK=0 */
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outb(7,io); /* Select tuner control */
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outb(test,io+1); /* Initialize for write */
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outb(7, dev->io); /* Select tuner control */
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outb(test, dev->io + 1); /* Initialize for write */
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for (i = 0; i < 25; i++) {
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test |= 0x01; /* Toggle SCK High */
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outb(test,io+1);
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outb(test, dev->io + 1);
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test &= 0xfe; /* Toggle SCK Low */
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outb(test,io+1);
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outb(test, dev->io + 1);
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fifo = fifo << 1; /* Prepare the next bit */
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test = 0x1c | ((fifo >> 23) & 0x02);
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outb(test,io+1);
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outb(test, dev->io + 1);
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}
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spin_unlock(&cadet_io_lock);
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mutex_unlock(&dev->lock);
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}
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static void
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cadet_setfreq(unsigned freq)
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static void cadet_setfreq(struct cadet *dev, unsigned freq)
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{
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unsigned fifo;
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int i, j, test;
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@ -216,7 +209,7 @@ cadet_setfreq(unsigned freq)
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* Formulate a fifo command
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*/
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fifo = 0;
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if(curtuner==0) { /* FM */
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if (dev->curtuner == 0) { /* FM */
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test = 102400;
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freq = (freq * 1000) / 16; /* Make it kHz */
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freq += 10700; /* IF is 10700 kHz */
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@ -229,7 +222,7 @@ cadet_setfreq(unsigned freq)
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test = test >> 1;
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}
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}
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if(curtuner==1) { /* AM */
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if (dev->curtuner == 1) { /* AM */
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fifo = (freq / 16) + 2010; /* Make it kHz */
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fifo |= 0x100000; /* Select AM Band */
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}
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@ -238,128 +231,121 @@ cadet_setfreq(unsigned freq)
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* Save current volume/mute setting
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*/
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spin_lock(&cadet_io_lock);
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outb(7,io); /* Select tuner control */
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curvol=inb(io+1);
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spin_unlock(&cadet_io_lock);
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mutex_lock(&dev->lock);
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outb(7, dev->io); /* Select tuner control */
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curvol = inb(dev->io + 1);
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mutex_unlock(&dev->lock);
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/*
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* Tune the card
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*/
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for (j = 3; j > -1; j--) {
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cadet_settune(fifo|(j<<16));
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cadet_settune(dev, fifo | (j << 16));
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spin_lock(&cadet_io_lock);
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outb(7,io); /* Select tuner control */
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outb(curvol,io+1);
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spin_unlock(&cadet_io_lock);
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mutex_lock(&dev->lock);
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outb(7, dev->io); /* Select tuner control */
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outb(curvol, dev->io + 1);
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mutex_unlock(&dev->lock);
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msleep(100);
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cadet_gettune();
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if((tunestat & 0x40) == 0) { /* Tuned */
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sigstrength=sigtable[curtuner][j];
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cadet_gettune(dev);
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if ((dev->tunestat & 0x40) == 0) { /* Tuned */
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dev->sigstrength = sigtable[dev->curtuner][j];
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return;
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}
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}
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sigstrength=0;
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dev->sigstrength = 0;
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}
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static int
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cadet_getvol(void)
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static int cadet_getvol(struct cadet *dev)
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{
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int ret = 0;
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spin_lock(&cadet_io_lock);
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mutex_lock(&dev->lock);
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outb(7,io); /* Select tuner control */
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if((inb(io + 1) & 0x20) != 0)
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outb(7, dev->io); /* Select tuner control */
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if ((inb(dev->io + 1) & 0x20) != 0)
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ret = 0xffff;
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spin_unlock(&cadet_io_lock);
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mutex_unlock(&dev->lock);
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return ret;
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}
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static void
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cadet_setvol(int vol)
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static void cadet_setvol(struct cadet *dev, int vol)
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{
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spin_lock(&cadet_io_lock);
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outb(7,io); /* Select tuner control */
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mutex_lock(&dev->lock);
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outb(7, dev->io); /* Select tuner control */
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if (vol > 0)
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outb(0x20,io+1);
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outb(0x20, dev->io + 1);
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else
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outb(0x00,io+1);
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spin_unlock(&cadet_io_lock);
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outb(0x00, dev->io + 1);
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mutex_unlock(&dev->lock);
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}
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static void
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cadet_handler(unsigned long data)
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static void cadet_handler(unsigned long data)
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{
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/*
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* Service the RDS fifo
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*/
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struct cadet *dev = (void *)data;
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if(spin_trylock(&cadet_io_lock))
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{
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outb(0x3,io); /* Select RDS Decoder Control */
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if((inb(io+1)&0x20)!=0) {
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/* Service the RDS fifo */
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if (mutex_trylock(&dev->lock)) {
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outb(0x3, dev->io); /* Select RDS Decoder Control */
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if ((inb(dev->io + 1) & 0x20) != 0)
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printk(KERN_CRIT "cadet: RDS fifo overflow\n");
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}
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outb(0x80,io); /* Select RDS fifo */
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while((inb(io)&0x80)!=0) {
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rdsbuf[rdsin]=inb(io+1);
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if(rdsin==rdsout)
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outb(0x80, dev->io); /* Select RDS fifo */
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while ((inb(dev->io) & 0x80) != 0) {
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dev->rdsbuf[dev->rdsin] = inb(dev->io + 1);
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if (dev->rdsin == dev->rdsout)
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printk(KERN_WARNING "cadet: RDS buffer overflow\n");
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else
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rdsin++;
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dev->rdsin++;
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}
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spin_unlock(&cadet_io_lock);
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mutex_unlock(&dev->lock);
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}
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/*
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* Service pending read
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*/
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if( rdsin!=rdsout)
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wake_up_interruptible(&read_queue);
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if (dev->rdsin != dev->rdsout)
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wake_up_interruptible(&dev->read_queue);
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/*
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* Clean up and exit
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*/
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init_timer(&readtimer);
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readtimer.function=cadet_handler;
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readtimer.data=(unsigned long)0;
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readtimer.expires=jiffies+msecs_to_jiffies(50);
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add_timer(&readtimer);
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init_timer(&dev->readtimer);
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dev->readtimer.function = cadet_handler;
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dev->readtimer.data = (unsigned long)0;
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dev->readtimer.expires = jiffies + msecs_to_jiffies(50);
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add_timer(&dev->readtimer);
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}
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static ssize_t
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cadet_read(struct file *file, char __user *data, size_t count, loff_t *ppos)
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static ssize_t cadet_read(struct file *file, char __user *data, size_t count, loff_t *ppos)
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{
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int i=0;
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struct cadet *dev = video_drvdata(file);
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unsigned char readbuf[RDS_BUFFER];
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int i = 0;
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if(rdsstat==0) {
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spin_lock(&cadet_io_lock);
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rdsstat=1;
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outb(0x80,io); /* Select RDS fifo */
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spin_unlock(&cadet_io_lock);
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init_timer(&readtimer);
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readtimer.function=cadet_handler;
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readtimer.data=(unsigned long)0;
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readtimer.expires=jiffies+msecs_to_jiffies(50);
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add_timer(&readtimer);
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if (dev->rdsstat == 0) {
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mutex_lock(&dev->lock);
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dev->rdsstat = 1;
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outb(0x80, dev->io); /* Select RDS fifo */
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mutex_unlock(&dev->lock);
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init_timer(&dev->readtimer);
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dev->readtimer.function = cadet_handler;
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dev->readtimer.data = (unsigned long)dev;
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dev->readtimer.expires = jiffies + msecs_to_jiffies(50);
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add_timer(&dev->readtimer);
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}
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if(rdsin==rdsout) {
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if (dev->rdsin == dev->rdsout) {
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if (file->f_flags & O_NONBLOCK)
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return -EWOULDBLOCK;
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interruptible_sleep_on(&read_queue);
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interruptible_sleep_on(&dev->read_queue);
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}
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while( i<count && rdsin!=rdsout)
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readbuf[i++]=rdsbuf[rdsout++];
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while (i < count && dev->rdsin != dev->rdsout)
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readbuf[i++] = dev->rdsbuf[dev->rdsout++];
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||||
|
||||
if (copy_to_user(data, readbuf, i))
|
||||
return -EFAULT;
|
||||
@ -370,26 +356,27 @@ 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();
|
||||
v->rxsubchans = cadet_getstereo(dev);
|
||||
switch (v->rxsubchans) {
|
||||
case V4L2_TUNER_SUB_MONO:
|
||||
v->audmode = V4L2_TUNER_MODE_MONO;
|
||||
@ -397,11 +384,12 @@ static int vidioc_g_tuner(struct file *file, void *priv,
|
||||
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)
|
||||
{
|
||||
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 a->index ? -EINVAL : 0;
|
||||
}
|
||||
|
||||
static int cadet_open(struct file *file)
|
||||
{
|
||||
struct cadet *dev = video_drvdata(file);
|
||||
|
||||
dev->users++;
|
||||
if (1 == dev->users)
|
||||
init_waitqueue_head(&dev->read_queue);
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int
|
||||
cadet_open(struct file *file)
|
||||
static int cadet_release(struct file *file)
|
||||
{
|
||||
users++;
|
||||
if (1 == users) init_waitqueue_head(&read_queue);
|
||||
return 0;
|
||||
}
|
||||
struct cadet *dev = video_drvdata(file);
|
||||
|
||||
static int
|
||||
cadet_release(struct file *file)
|
||||
{
|
||||
users--;
|
||||
if (0 == users){
|
||||
del_timer_sync(&readtimer);
|
||||
rdsstat=0;
|
||||
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[] = {
|
||||
@ -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 };
|
||||
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;
|
||||
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);
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user