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V4L/DVB (4355): V4L2 conversion: radio-sf16fmr2
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Driver conversion to V4L2 API.
Require some testing, since this obsolete hardware is not
common those days.

Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
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Mauro Carvalho Chehab committed Sep 26, 2006
1 parent fa38ad6 commit acda0e7
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Showing 2 changed files with 140 additions and 84 deletions.
2 changes: 1 addition & 1 deletion drivers/media/radio/Kconfig
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Original file line number Diff line number Diff line change
Expand Up @@ -225,7 +225,7 @@ config RADIO_SF16FMI

config RADIO_SF16FMR2
tristate "SF16FMR2 Radio"
depends on ISA && VIDEO_V4L1
depends on ISA && VIDEO_V4L2
---help---
Choose Y here if you have one of these FM radio cards.

Expand Down
222 changes: 139 additions & 83 deletions drivers/media/radio/radio-sf16fmr2.c
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Original file line number Diff line number Diff line change
Expand Up @@ -10,6 +10,8 @@
* For read stereo/mono you must wait 0.1 sec after set frequency and
* card unmuted so I set frequency on unmute
* Signal handling seem to work only on autoscanning (not implemented)
*
* Converted to V4L2 API by Mauro Carvalho Chehab <mchehab@infradead.org>
*/

#include <linux/module.h> /* Modules */
Expand All @@ -18,10 +20,31 @@
#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> /* kernel radio structs */
#include <media/v4l2-common.h>
#include <linux/mutex.h>

#define RADIO_VERSION KERNEL_VERSION(0,0,2)

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 = 65535,
.step = 1<<12,
.default_value = 0xff,
.type = V4L2_CTRL_TYPE_INTEGER,
}
};

static struct mutex lock;

#undef DEBUG
Expand Down Expand Up @@ -214,63 +237,65 @@ static int fmr2_do_ioctl(struct inode *inode, struct file *file,

switch(cmd)
{
case VIDIOCGCAP:
case VIDIOC_QUERYCAP:
{
struct video_capability *v = arg;
struct v4l2_capability *v = arg;
memset(v,0,sizeof(*v));
strcpy(v->name, "SF16-FMR2 radio");
v->type=VID_TYPE_TUNER;
v->channels=1;
v->audios=1;
strlcpy(v->driver, "radio-sf16fmr2", sizeof (v->driver));
strlcpy(v->card, "SF16-FMR2 radio", sizeof (v->card));
sprintf(v->bus_info,"ISA");
v->version = RADIO_VERSION;
v->capabilities = V4L2_CAP_TUNER;

return 0;
}
case VIDIOCGTUNER:
case VIDIOC_G_TUNER:
{
struct video_tuner *v = arg;
struct v4l2_tuner *v = arg;
int mult;

if(v->tuner) /* Only 1 tuner */
if (v->index > 0)
return -EINVAL;

memset(v,0,sizeof(*v));
strcpy(v->name, "FM");
mult = (fmr2->flags & VIDEO_TUNER_LOW) ? 1 : 1000;
v->type = V4L2_TUNER_RADIO;

mult = (fmr2->flags & V4L2_TUNER_CAP_LOW) ? 1 : 1000;
v->rangelow = RSF16_MINFREQ/mult;
v->rangehigh = RSF16_MAXFREQ/mult;
v->flags = fmr2->flags | VIDEO_AUDIO_MUTABLE;
if (fmr2->mute)
v->flags |= VIDEO_AUDIO_MUTE;
v->mode=VIDEO_MODE_AUTO;
v->rxsubchans =V4L2_TUNER_SUB_MONO | V4L2_TUNER_MODE_STEREO;
v->capability=fmr2->flags&V4L2_TUNER_CAP_LOW;

v->audmode = fmr2->stereo ? V4L2_TUNER_MODE_STEREO:
V4L2_TUNER_MODE_MONO;
mutex_lock(&lock);
v->signal = fmr2_getsigstr(fmr2);
mutex_unlock(&lock);

return 0;
}
case VIDIOCSTUNER:
case VIDIOC_S_TUNER:
{
struct video_tuner *v = arg;
if (v->tuner!=0)
struct v4l2_tuner *v = arg;

if (v->index > 0)
return -EINVAL;
fmr2->flags = v->flags & VIDEO_TUNER_LOW;
return 0;
}
case VIDIOCGFREQ:
{
unsigned long *freq = arg;
*freq = fmr2->curfreq;
if (!(fmr2->flags & VIDEO_TUNER_LOW))
*freq /= 1000;

return 0;
}
case VIDIOCSFREQ:
case VIDIOC_S_FREQUENCY:
{
unsigned long *freq = arg;
if (!(fmr2->flags & VIDEO_TUNER_LOW))
*freq *= 1000;
if ( *freq < RSF16_MINFREQ || *freq > RSF16_MAXFREQ )
struct v4l2_frequency *f = arg;

if (!(fmr2->flags & V4L2_TUNER_CAP_LOW))
f->frequency *= 1000;
if (f->frequency < RSF16_MINFREQ ||
f->frequency > RSF16_MAXFREQ )
return -EINVAL;
/* rounding in steps of 200 to match th freq
* that will be used
*/
fmr2->curfreq = (*freq/200)*200;
/*rounding in steps of 200 to match th freq
that will be used */
fmr2->curfreq = (f->frequency/200)*200;

/* set card freq (if not muted) */
if (fmr2->curvol && !fmr2->mute)
Expand All @@ -279,68 +304,100 @@ static int fmr2_do_ioctl(struct inode *inode, struct file *file,
fmr2_setfreq(fmr2);
mutex_unlock(&lock);
}

return 0;
}
case VIDIOCGAUDIO:
case VIDIOC_G_FREQUENCY:
{
struct video_audio *v = arg;
memset(v,0,sizeof(*v));
/* !!! do not return VIDEO_AUDIO_MUTE */
v->flags = VIDEO_AUDIO_MUTABLE;
strcpy(v->name, "Radio");
/* get current stereo mode */
v->mode = fmr2->stereo ? VIDEO_SOUND_STEREO: VIDEO_SOUND_MONO;
/* volume supported ? */
if (fmr2->card_type == 11)
{
v->flags |= VIDEO_AUDIO_VOLUME;
v->step = 1 << 12;
v->volume = fmr2->curvol;
}
debug_print((KERN_DEBUG "Get flags %d vol %d\n", v->flags, v->volume));
struct v4l2_frequency *f = arg;

f->type = V4L2_TUNER_RADIO;
f->frequency = fmr2->curfreq;
if (!(fmr2->flags & V4L2_TUNER_CAP_LOW))
f->frequency /= 1000;

return 0;
}
case VIDIOCSAUDIO:
case VIDIOC_QUERYCTRL:
{
struct video_audio *v = arg;
if(v->audio)
return -EINVAL;
debug_print((KERN_DEBUG "Set flags %d vol %d\n", v->flags, v->volume));
/* set volume */
if (v->flags & VIDEO_AUDIO_VOLUME)
fmr2->curvol = v->volume; /* !!! set with precision */
if (fmr2->card_type != 11) fmr2->curvol = 65535;
fmr2->mute = 0;
if (v->flags & VIDEO_AUDIO_MUTE)
fmr2->mute = 1;
struct v4l2_queryctrl *qc = arg;
int i;

for (i = 0; i < ARRAY_SIZE(radio_qctrl); i++) {
if ((fmr2->card_type != 11)
&& V4L2_CID_AUDIO_VOLUME)
radio_qctrl[i].step=65535;
if (qc->id && qc->id == radio_qctrl[i].id) {
memcpy(qc, &(radio_qctrl[i]),
sizeof(*qc));
return (0);
}
}
return -EINVAL;
}
case VIDIOC_G_CTRL:
{
struct v4l2_control *ctrl= arg;

switch (ctrl->id) {
case V4L2_CID_AUDIO_MUTE:
ctrl->value=fmr2->mute;
return (0);
case V4L2_CID_AUDIO_VOLUME:
ctrl->value=fmr2->curvol;
return (0);
}
return -EINVAL;
}
case VIDIOC_S_CTRL:
{
struct v4l2_control *ctrl= arg;

switch (ctrl->id) {
case V4L2_CID_AUDIO_MUTE:
fmr2->mute=ctrl->value;
if (fmr2->card_type != 11) {
if (!fmr2->mute) {
fmr2->curvol = 65535;
} else {
fmr2->curvol = 0;
}
}
break;
case V4L2_CID_AUDIO_VOLUME:
fmr2->curvol = ctrl->value;
if (fmr2->card_type != 11) {
if (fmr2->curvol) {
fmr2->curvol = 65535;
fmr2->mute = 0;
} else {
fmr2->curvol = 0;
fmr2->mute = 1;
}
}
break;
default:
return -EINVAL;
}
#ifdef DEBUG
if (fmr2->curvol && !fmr2->mute)
printk(KERN_DEBUG "unmute\n");
else
printk(KERN_DEBUG "mute\n");
#endif
mutex_lock(&lock);
if (fmr2->curvol && !fmr2->mute)
{
if (fmr2->curvol && !fmr2->mute) {
fmr2_setvolume(fmr2);
fmr2_setfreq(fmr2);
}
else fmr2_mute(fmr2->port);
} else
fmr2_mute(fmr2->port);
mutex_unlock(&lock);
return 0;
}
case VIDIOCGUNIT:
{
struct video_unit *v = arg;
v->video=VIDEO_NO_UNIT;
v->vbi=VIDEO_NO_UNIT;
v->radio=dev->minor;
v->audio=0; /* How do we find out this??? */
v->teletext=VIDEO_NO_UNIT;
return 0;
return (0);
}
default:
return -ENOIOCTLCMD;
return v4l_compat_translate_ioctl(inode,file,cmd,arg,
az_do_ioctl);

}
}

Expand All @@ -366,7 +423,7 @@ static struct video_device fmr2_radio=
.owner = THIS_MODULE,
.name = "SF16FMR2 radio",
. type = VID_TYPE_TUNER,
.hardware = VID_HARDWARE_SF16FMR2,
.hardware = 0,
.fops = &fmr2_fops,
};

Expand All @@ -377,7 +434,7 @@ static int __init fmr2_init(void)
fmr2_unit.mute = 0;
fmr2_unit.curfreq = 0;
fmr2_unit.stereo = 1;
fmr2_unit.flags = VIDEO_TUNER_LOW;
fmr2_unit.flags = V4L2_TUNER_CAP_LOW;
fmr2_unit.card_type = 0;
fmr2_radio.priv = &fmr2_unit;

Expand All @@ -396,7 +453,6 @@ static int __init fmr2_init(void)
}

printk(KERN_INFO "SF16FMR2 radio card driver at 0x%x.\n", io);
debug_print((KERN_DEBUG "Mute %d Low %d\n",VIDEO_AUDIO_MUTE,VIDEO_TUNER_LOW));
/* mute card - prevents noisy bootups */
mutex_lock(&lock);
fmr2_mute(io);
Expand Down

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