diff options
author | Hans J. Koch <koch@hjk-az.de> | 2006-08-08 14:10:12 +0200 |
---|---|---|
committer | Mauro Carvalho Chehab <mchehab@infradead.org> | 2006-09-26 16:53:32 +0200 |
commit | c0c7fa096623c0cfdd9d253de9d874558066cdbb (patch) | |
tree | 7a6fff35c6b6ba9367b1aabcbfbf5716b932eab9 /drivers/media/radio/radio-cadet.c | |
parent | V4L/DVB (4405): Add missing KConfig I2C dependencies (diff) | |
download | linux-c0c7fa096623c0cfdd9d253de9d874558066cdbb.tar.xz linux-c0c7fa096623c0cfdd9d253de9d874558066cdbb.zip |
V4L/DVB (4406): Convert radio-cadet to V4L2 API
This is a card with RDS capabilities.
RDS specifications didn't change from V4L1 to V4L2, so that part should be OK.
This patch changed the following stuff:
* The device can be opened multiple times. That's necessary because there are
at least a radio application and an RDS application (rdsd) that want to
open() the device.
* Added a poll() function. Every character device should have that, and rdsd
expects it as it uses select() on that file descriptor.
* Converted the ioctls to V4L2. MUTE is not implemented correctly as the
card doesn't seem to have a special bit for that. Probably there are a few
more ioctls that should at least return 0 or an error.
As I do not own such a card, I couldn't test anything. If there is anybody out
there who owns such an ancient card, please test and report.
I just checked that the code compiles.
Signed-off-by: Hans J. Koch <koch@hjk-az.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
Diffstat (limited to 'drivers/media/radio/radio-cadet.c')
-rw-r--r-- | drivers/media/radio/radio-cadet.c | 249 |
1 files changed, 135 insertions, 114 deletions
diff --git a/drivers/media/radio/radio-cadet.c b/drivers/media/radio/radio-cadet.c index 8641aec7baf8..938856588831 100644 --- a/drivers/media/radio/radio-cadet.c +++ b/drivers/media/radio/radio-cadet.c @@ -25,6 +25,9 @@ * * 2003-01-31 Alan Cox <alan@redhat.com> * Cleaned up locking, delay code, general odds and ends + * + * 2006-07-30 Hans J. Koch <koch@hjk-az.de> + * Changed API to V4L2 */ #include <linux/module.h> /* Modules */ @@ -33,12 +36,16 @@ #include <linux/delay.h> /* udelay */ #include <asm/io.h> /* outb, outb_p */ #include <asm/uaccess.h> /* copy to/from user */ -#include <linux/videodev.h> /* kernel radio structs */ +#include <linux/videodev2.h> /* V4L2 API defs */ #include <media/v4l2-common.h> #include <linux/param.h> #include <linux/pnp.h> #define RDS_BUFFER 256 +#define RDS_RX_FLAG 1 +#define MBS_RX_FLAG 2 + +#define CADET_VERSION KERNEL_VERSION(0,3,3) static int io=-1; /* default to isapnp activation */ static int radio_nr = -1; @@ -61,44 +68,24 @@ static int cadet_probe(void); */ static __u16 sigtable[2][4]={{5,10,30,150},{28,40,63,1000}}; -static int cadet_getrds(void) -{ - int rdsstat=0; - - spin_lock(&cadet_io_lock); - outb(3,io); /* Select Decoder Control/Status */ - outb(inb(io+1)&0x7f,io+1); /* Reset RDS detection */ - spin_unlock(&cadet_io_lock); - - msleep(100); - - spin_lock(&cadet_io_lock); - outb(3,io); /* Select Decoder Control/Status */ - if((inb(io+1)&0x80)!=0) { - rdsstat|=VIDEO_TUNER_RDS_ON; - } - if((inb(io+1)&0x10)!=0) { - rdsstat|=VIDEO_TUNER_MBS_ON; - } - spin_unlock(&cadet_io_lock); - return rdsstat; -} -static int cadet_getstereo(void) +static int +cadet_getstereo(void) { - int ret = 0; + int ret = V4L2_TUNER_SUB_MONO; if(curtuner != 0) /* Only FM has stereo capability! */ - return 0; + return V4L2_TUNER_SUB_MONO; spin_lock(&cadet_io_lock); outb(7,io); /* Select tuner control */ if( (inb(io+1) & 0x40) == 0) - ret = 1; + ret = V4L2_TUNER_SUB_STEREO; spin_unlock(&cadet_io_lock); return ret; } -static unsigned cadet_gettune(void) +static unsigned +cadet_gettune(void) { int curvol,i; unsigned fifo=0; @@ -135,7 +122,8 @@ static unsigned cadet_gettune(void) return fifo; } -static unsigned cadet_getfreq(void) +static unsigned +cadet_getfreq(void) { int i; unsigned freq=0,test,fifo=0; @@ -167,7 +155,8 @@ static unsigned cadet_getfreq(void) return freq; } -static void cadet_settune(unsigned fifo) +static void +cadet_settune(unsigned fifo) { int i; unsigned test; @@ -195,7 +184,8 @@ static void cadet_settune(unsigned fifo) spin_unlock(&cadet_io_lock); } -static void cadet_setfreq(unsigned freq) +static void +cadet_setfreq(unsigned freq) { unsigned fifo; int i,j,test; @@ -255,7 +245,8 @@ static void cadet_setfreq(unsigned freq) } -static int cadet_getvol(void) +static int +cadet_getvol(void) { int ret = 0; @@ -270,7 +261,8 @@ static int cadet_getvol(void) } -static void cadet_setvol(int vol) +static void +cadet_setvol(int vol) { spin_lock(&cadet_io_lock); outb(7,io); /* Select tuner control */ @@ -281,7 +273,8 @@ static void cadet_setvol(int vol) spin_unlock(&cadet_io_lock); } -static void cadet_handler(unsigned long data) +static void +cadet_handler(unsigned long data) { /* * Service the RDS fifo @@ -322,8 +315,8 @@ static void cadet_handler(unsigned long data) -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; unsigned char readbuf[RDS_BUFFER]; @@ -359,128 +352,156 @@ static int cadet_do_ioctl(struct inode *inode, struct file *file, { switch(cmd) { - case VIDIOCGCAP: + case VIDIOC_QUERYCAP: { - struct video_capability *v = arg; - memset(v,0,sizeof(*v)); - v->type=VID_TYPE_TUNER; - v->channels=2; - v->audios=1; - strcpy(v->name, "ADS Cadet"); + struct v4l2_capability *cap = arg; + memset(cap,0,sizeof(*cap)); + cap->capabilities = + V4L2_CAP_TUNER | + V4L2_CAP_READWRITE; + cap->version = CADET_VERSION; + strcpy(cap->driver, "ADS Cadet"); + strcpy(cap->card, "ADS Cadet"); return 0; } - case VIDIOCGTUNER: + case VIDIOC_G_TUNER: { - struct video_tuner *v = arg; - if((v->tuner<0)||(v->tuner>1)) { - return -EINVAL; - } - switch(v->tuner) { - case 0: - strcpy(v->name,"FM"); - v->rangelow=1400; /* 87.5 MHz */ - v->rangehigh=1728; /* 108.0 MHz */ - v->flags=0; - v->mode=0; - v->mode|=VIDEO_MODE_AUTO; - v->signal=sigstrength; - if(cadet_getstereo()==1) { - v->flags|=VIDEO_TUNER_STEREO_ON; - } - v->flags|=cadet_getrds(); - break; - case 1: - strcpy(v->name,"AM"); - v->rangelow=8320; /* 520 kHz */ - v->rangehigh=26400; /* 1650 kHz */ - v->flags=0; - v->flags|=VIDEO_TUNER_LOW; - v->mode=0; - v->mode|=VIDEO_MODE_AUTO; - v->signal=sigstrength; - break; + struct v4l2_tuner *t = arg; + memset(t,0,sizeof(*t)); + t->type = V4L2_TUNER_RADIO; + switch (t->index) + { + case 0: strcpy(t->name, "FM"); + t->capability = V4L2_TUNER_CAP_STEREO; + t->rangelow = 1400; /* 87.5 MHz */ + t->rangehigh = 1728; /* 108.0 MHz */ + t->rxsubchans=cadet_getstereo(); + switch (t->rxsubchans){ + case V4L2_TUNER_SUB_MONO: + t->audmode = V4L2_TUNER_MODE_MONO; + break; + case V4L2_TUNER_SUB_STEREO: + t->audmode = V4L2_TUNER_MODE_STEREO; + break; + default: ; + } + break; + case 1: strcpy(t->name, "AM"); + t->capability = V4L2_TUNER_CAP_LOW; + t->rangelow = 8320; /* 520 kHz */ + t->rangehigh = 26400; /* 1650 kHz */ + t->rxsubchans = V4L2_TUNER_SUB_MONO; + t->audmode = V4L2_TUNER_MODE_MONO; + break; + default: + return -EINVAL; } + + t->signal = sigstrength; /* We might need to modify scaling of this */ return 0; } - case VIDIOCSTUNER: + case VIDIOC_S_TUNER: { - struct video_tuner *v = arg; - if((v->tuner<0)||(v->tuner>1)) { + struct v4l2_tuner *t = arg; + if((t->index != 0)&&(t->index != 1)) return -EINVAL; - } - curtuner=v->tuner; + + curtuner = t->index; return 0; } - case VIDIOCGFREQ: + case VIDIOC_G_FREQUENCY: { - unsigned long *freq = arg; - *freq = cadet_getfreq(); + struct v4l2_frequency *f = arg; + memset(f,0,sizeof(*f)); + f->tuner = curtuner; + f->type = V4L2_TUNER_RADIO; + f->frequency = cadet_getfreq(); return 0; } - case VIDIOCSFREQ: + case VIDIOC_S_FREQUENCY: { - unsigned long *freq = arg; - if((curtuner==0)&&((*freq<1400)||(*freq>1728))) { + struct v4l2_frequency *f = arg; + if (f->type != V4L2_TUNER_RADIO){ + return -EINVAL; + } + if((curtuner==0)&&((f->frequency<1400)||(f->frequency>1728))) { return -EINVAL; } - if((curtuner==1)&&((*freq<8320)||(*freq>26400))) { + if((curtuner==1)&&((f->frequency<8320)||(f->frequency>26400))) { return -EINVAL; } - cadet_setfreq(*freq); + cadet_setfreq(f->frequency); return 0; } - case VIDIOCGAUDIO: + case VIDIOC_G_CTRL: { - struct video_audio *v = arg; - memset(v,0, sizeof(*v)); - v->flags=VIDEO_AUDIO_MUTABLE|VIDEO_AUDIO_VOLUME; - if(cadet_getstereo()==0) { - v->mode=VIDEO_SOUND_MONO; - } else { - v->mode=VIDEO_SOUND_STEREO; + struct v4l2_control *c = arg; + switch (c->id){ + case V4L2_CID_AUDIO_MUTE: /* TODO: Handle this correctly */ + c->value = (cadet_getvol() == 0); + break; + case V4L2_CID_AUDIO_VOLUME: + c->value = cadet_getvol(); + break; + default: + return -EINVAL; } - v->volume=cadet_getvol(); - v->step=0xffff; - strcpy(v->name, "Radio"); return 0; } - case VIDIOCSAUDIO: + case VIDIOC_S_CTRL: { - struct video_audio *v = arg; - if(v->audio) - return -EINVAL; - cadet_setvol(v->volume); - if(v->flags&VIDEO_AUDIO_MUTE) - cadet_setvol(0); - else - cadet_setvol(0xffff); + struct v4l2_control *c = arg; + switch (c->id){ + case V4L2_CID_AUDIO_MUTE: /* TODO: Handle this correctly */ + if (c->value) cadet_setvol(0); + else cadet_setvol(0xffff); + break; + case V4L2_CID_AUDIO_VOLUME: + cadet_setvol(c->value); + break; + default: + return -EINVAL; + } return 0; } + default: return -ENOIOCTLCMD; } } -static int cadet_ioctl(struct inode *inode, struct file *file, +static int +cadet_ioctl(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg) { return video_usercopy(inode, file, cmd, arg, cadet_do_ioctl); } -static int cadet_open(struct inode *inode, struct file *file) +static int +cadet_open(struct inode *inode, struct file *file) { - if(users) - return -EBUSY; users++; - init_waitqueue_head(&read_queue); + if (1 == users) init_waitqueue_head(&read_queue); return 0; } -static int cadet_release(struct inode *inode, struct file *file) +static int +cadet_release(struct inode *inode, struct file *file) { - del_timer_sync(&readtimer); - rdsstat=0; users--; + if (0 == users){ + del_timer_sync(&readtimer); + rdsstat=0; + } + return 0; +} + +static unsigned int +cadet_poll(struct file *file, struct poll_table_struct *wait) +{ + poll_wait(file,&read_queue,wait); + if(rdsin != rdsout) + return POLLIN | POLLRDNORM; return 0; } @@ -491,6 +512,7 @@ static struct file_operations cadet_fops = { .release = cadet_release, .read = cadet_read, .ioctl = cadet_ioctl, + .poll = cadet_poll, .compat_ioctl = v4l_compat_ioctl32, .llseek = no_llseek, }; @@ -500,7 +522,6 @@ static struct video_device cadet_radio= .owner = THIS_MODULE, .name = "Cadet radio", .type = VID_TYPE_TUNER, - .hardware = VID_HARDWARE_CADET, .fops = &cadet_fops, }; |