499 строки
12 KiB
C
499 строки
12 KiB
C
/*
|
|
***************************************************************************
|
|
*
|
|
* radio-gemtek-pci.c - Gemtek PCI Radio driver
|
|
* (C) 2001 Vladimir Shebordaev <vshebordaev@mail.ru>
|
|
*
|
|
***************************************************************************
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License as
|
|
* published by the Free Software Foundation; either version 2 of
|
|
* the License, or (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public
|
|
* License along with this program; if not, write to the Free
|
|
* Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139,
|
|
* USA.
|
|
*
|
|
***************************************************************************
|
|
*
|
|
* Gemtek Corp still silently refuses to release any specifications
|
|
* of their multimedia devices, so the protocol still has to be
|
|
* reverse engineered.
|
|
*
|
|
* The v4l code was inspired by Jonas Munsin's Gemtek serial line
|
|
* radio device driver.
|
|
*
|
|
* Please, let me know if this piece of code was useful :)
|
|
*
|
|
* TODO: multiple device support and portability were not tested
|
|
*
|
|
* Converted to V4L2 API by Mauro Carvalho Chehab <mchehab@infradead.org>
|
|
*
|
|
***************************************************************************
|
|
*/
|
|
|
|
#include <linux/types.h>
|
|
#include <linux/list.h>
|
|
#include <linux/module.h>
|
|
#include <linux/init.h>
|
|
#include <linux/pci.h>
|
|
#include <linux/videodev2.h>
|
|
#include <media/v4l2-common.h>
|
|
#include <media/v4l2-ioctl.h>
|
|
#include <linux/errno.h>
|
|
|
|
#include <linux/version.h> /* for KERNEL_VERSION MACRO */
|
|
#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 = 65535,
|
|
.default_value = 0xff,
|
|
.type = V4L2_CTRL_TYPE_INTEGER,
|
|
}
|
|
};
|
|
|
|
#include <asm/io.h>
|
|
#include <asm/uaccess.h>
|
|
|
|
#ifndef PCI_VENDOR_ID_GEMTEK
|
|
#define PCI_VENDOR_ID_GEMTEK 0x5046
|
|
#endif
|
|
|
|
#ifndef PCI_DEVICE_ID_GEMTEK_PR103
|
|
#define PCI_DEVICE_ID_GEMTEK_PR103 0x1001
|
|
#endif
|
|
|
|
#ifndef GEMTEK_PCI_RANGE_LOW
|
|
#define GEMTEK_PCI_RANGE_LOW (87*16000)
|
|
#endif
|
|
|
|
#ifndef GEMTEK_PCI_RANGE_HIGH
|
|
#define GEMTEK_PCI_RANGE_HIGH (108*16000)
|
|
#endif
|
|
|
|
struct gemtek_pci_card {
|
|
struct video_device *videodev;
|
|
|
|
u32 iobase;
|
|
u32 length;
|
|
|
|
u32 current_frequency;
|
|
u8 mute;
|
|
};
|
|
|
|
static int nr_radio = -1;
|
|
static unsigned long in_use;
|
|
|
|
static inline u8 gemtek_pci_out( u16 value, u32 port )
|
|
{
|
|
outw( value, port );
|
|
|
|
return (u8)value;
|
|
}
|
|
|
|
#define _b0( v ) *((u8 *)&v)
|
|
static void __gemtek_pci_cmd( u16 value, u32 port, u8 *last_byte, int keep )
|
|
{
|
|
register u8 byte = *last_byte;
|
|
|
|
if ( !value ) {
|
|
if ( !keep )
|
|
value = (u16)port;
|
|
byte &= 0xfd;
|
|
} else
|
|
byte |= 2;
|
|
|
|
_b0( value ) = byte;
|
|
outw( value, port );
|
|
byte |= 1;
|
|
_b0( value ) = byte;
|
|
outw( value, port );
|
|
byte &= 0xfe;
|
|
_b0( value ) = byte;
|
|
outw( value, port );
|
|
|
|
*last_byte = byte;
|
|
}
|
|
|
|
static inline void gemtek_pci_nil( u32 port, u8 *last_byte )
|
|
{
|
|
__gemtek_pci_cmd( 0x00, port, last_byte, false );
|
|
}
|
|
|
|
static inline void gemtek_pci_cmd( u16 cmd, u32 port, u8 *last_byte )
|
|
{
|
|
__gemtek_pci_cmd( cmd, port, last_byte, true );
|
|
}
|
|
|
|
static void gemtek_pci_setfrequency( struct gemtek_pci_card *card, unsigned long frequency )
|
|
{
|
|
register int i;
|
|
register u32 value = frequency / 200 + 856;
|
|
register u16 mask = 0x8000;
|
|
u8 last_byte;
|
|
u32 port = card->iobase;
|
|
|
|
last_byte = gemtek_pci_out( 0x06, port );
|
|
|
|
i = 0;
|
|
do {
|
|
gemtek_pci_nil( port, &last_byte );
|
|
i++;
|
|
} while ( i < 9 );
|
|
|
|
i = 0;
|
|
do {
|
|
gemtek_pci_cmd( value & mask, port, &last_byte );
|
|
mask >>= 1;
|
|
i++;
|
|
} while ( i < 16 );
|
|
|
|
outw( 0x10, port );
|
|
}
|
|
|
|
|
|
static inline void gemtek_pci_mute( struct gemtek_pci_card *card )
|
|
{
|
|
outb( 0x1f, card->iobase );
|
|
card->mute = true;
|
|
}
|
|
|
|
static inline void gemtek_pci_unmute( struct gemtek_pci_card *card )
|
|
{
|
|
if ( card->mute ) {
|
|
gemtek_pci_setfrequency( card, card->current_frequency );
|
|
card->mute = false;
|
|
}
|
|
}
|
|
|
|
static inline unsigned int gemtek_pci_getsignal( struct gemtek_pci_card *card )
|
|
{
|
|
return ( inb( card->iobase ) & 0x08 ) ? 0 : 1;
|
|
}
|
|
|
|
static int vidioc_querycap(struct file *file, void *priv,
|
|
struct v4l2_capability *v)
|
|
{
|
|
strlcpy(v->driver, "radio-gemtek-pci", sizeof(v->driver));
|
|
strlcpy(v->card, "GemTek PCI Radio", sizeof(v->card));
|
|
sprintf(v->bus_info, "ISA");
|
|
v->version = RADIO_VERSION;
|
|
v->capabilities = V4L2_CAP_TUNER;
|
|
return 0;
|
|
}
|
|
|
|
static int vidioc_g_tuner(struct file *file, void *priv,
|
|
struct v4l2_tuner *v)
|
|
{
|
|
struct gemtek_pci_card *card = video_drvdata(file);
|
|
|
|
if (v->index > 0)
|
|
return -EINVAL;
|
|
|
|
strcpy(v->name, "FM");
|
|
v->type = V4L2_TUNER_RADIO;
|
|
v->rangelow = GEMTEK_PCI_RANGE_LOW;
|
|
v->rangehigh = GEMTEK_PCI_RANGE_HIGH;
|
|
v->rxsubchans = V4L2_TUNER_SUB_MONO;
|
|
v->capability = V4L2_TUNER_CAP_LOW;
|
|
v->audmode = V4L2_TUNER_MODE_MONO;
|
|
v->signal = 0xffff * gemtek_pci_getsignal(card);
|
|
return 0;
|
|
}
|
|
|
|
static int vidioc_s_tuner(struct file *file, void *priv,
|
|
struct v4l2_tuner *v)
|
|
{
|
|
if (v->index > 0)
|
|
return -EINVAL;
|
|
return 0;
|
|
}
|
|
|
|
static int vidioc_s_frequency(struct file *file, void *priv,
|
|
struct v4l2_frequency *f)
|
|
{
|
|
struct gemtek_pci_card *card = video_drvdata(file);
|
|
|
|
if ( (f->frequency < GEMTEK_PCI_RANGE_LOW) ||
|
|
(f->frequency > GEMTEK_PCI_RANGE_HIGH) )
|
|
return -EINVAL;
|
|
gemtek_pci_setfrequency(card, f->frequency);
|
|
card->current_frequency = f->frequency;
|
|
card->mute = false;
|
|
return 0;
|
|
}
|
|
|
|
static int vidioc_g_frequency(struct file *file, void *priv,
|
|
struct v4l2_frequency *f)
|
|
{
|
|
struct gemtek_pci_card *card = video_drvdata(file);
|
|
|
|
f->type = V4L2_TUNER_RADIO;
|
|
f->frequency = card->current_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;
|
|
}
|
|
}
|
|
return -EINVAL;
|
|
}
|
|
|
|
static int vidioc_g_ctrl(struct file *file, void *priv,
|
|
struct v4l2_control *ctrl)
|
|
{
|
|
struct gemtek_pci_card *card = video_drvdata(file);
|
|
|
|
switch (ctrl->id) {
|
|
case V4L2_CID_AUDIO_MUTE:
|
|
ctrl->value = card->mute;
|
|
return 0;
|
|
case V4L2_CID_AUDIO_VOLUME:
|
|
if (card->mute)
|
|
ctrl->value = 0;
|
|
else
|
|
ctrl->value = 65535;
|
|
return 0;
|
|
}
|
|
return -EINVAL;
|
|
}
|
|
|
|
static int vidioc_s_ctrl(struct file *file, void *priv,
|
|
struct v4l2_control *ctrl)
|
|
{
|
|
struct gemtek_pci_card *card = video_drvdata(file);
|
|
|
|
switch (ctrl->id) {
|
|
case V4L2_CID_AUDIO_MUTE:
|
|
if (ctrl->value)
|
|
gemtek_pci_mute(card);
|
|
else
|
|
gemtek_pci_unmute(card);
|
|
return 0;
|
|
case V4L2_CID_AUDIO_VOLUME:
|
|
if (ctrl->value)
|
|
gemtek_pci_unmute(card);
|
|
else
|
|
gemtek_pci_mute(card);
|
|
return 0;
|
|
}
|
|
return -EINVAL;
|
|
}
|
|
|
|
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;
|
|
return 0;
|
|
}
|
|
|
|
static int vidioc_s_input(struct file *filp, void *priv, unsigned int i)
|
|
{
|
|
if (i != 0)
|
|
return -EINVAL;
|
|
return 0;
|
|
}
|
|
|
|
static int vidioc_s_audio(struct file *file, void *priv,
|
|
struct v4l2_audio *a)
|
|
{
|
|
if (a->index != 0)
|
|
return -EINVAL;
|
|
return 0;
|
|
}
|
|
|
|
enum {
|
|
GEMTEK_PR103
|
|
};
|
|
|
|
static char *card_names[] __devinitdata = {
|
|
"GEMTEK_PR103"
|
|
};
|
|
|
|
static struct pci_device_id gemtek_pci_id[] =
|
|
{
|
|
{ PCI_VENDOR_ID_GEMTEK, PCI_DEVICE_ID_GEMTEK_PR103,
|
|
PCI_ANY_ID, PCI_ANY_ID, 0, 0, GEMTEK_PR103 },
|
|
{ 0 }
|
|
};
|
|
|
|
MODULE_DEVICE_TABLE( pci, gemtek_pci_id );
|
|
|
|
static int mx = 1;
|
|
|
|
static int gemtek_pci_exclusive_open(struct file *file)
|
|
{
|
|
return test_and_set_bit(0, &in_use) ? -EBUSY : 0;
|
|
}
|
|
|
|
static int gemtek_pci_exclusive_release(struct file *file)
|
|
{
|
|
clear_bit(0, &in_use);
|
|
return 0;
|
|
}
|
|
|
|
static const struct v4l2_file_operations gemtek_pci_fops = {
|
|
.owner = THIS_MODULE,
|
|
.open = gemtek_pci_exclusive_open,
|
|
.release = gemtek_pci_exclusive_release,
|
|
.ioctl = video_ioctl2,
|
|
};
|
|
|
|
static const struct v4l2_ioctl_ops gemtek_pci_ioctl_ops = {
|
|
.vidioc_querycap = vidioc_querycap,
|
|
.vidioc_g_tuner = vidioc_g_tuner,
|
|
.vidioc_s_tuner = vidioc_s_tuner,
|
|
.vidioc_g_audio = vidioc_g_audio,
|
|
.vidioc_s_audio = vidioc_s_audio,
|
|
.vidioc_g_input = vidioc_g_input,
|
|
.vidioc_s_input = vidioc_s_input,
|
|
.vidioc_g_frequency = vidioc_g_frequency,
|
|
.vidioc_s_frequency = vidioc_s_frequency,
|
|
.vidioc_queryctrl = vidioc_queryctrl,
|
|
.vidioc_g_ctrl = vidioc_g_ctrl,
|
|
.vidioc_s_ctrl = vidioc_s_ctrl,
|
|
};
|
|
|
|
static struct video_device vdev_template = {
|
|
.name = "Gemtek PCI Radio",
|
|
.fops = &gemtek_pci_fops,
|
|
.ioctl_ops = &gemtek_pci_ioctl_ops,
|
|
.release = video_device_release_empty,
|
|
};
|
|
|
|
static int __devinit gemtek_pci_probe( struct pci_dev *pci_dev, const struct pci_device_id *pci_id )
|
|
{
|
|
struct gemtek_pci_card *card;
|
|
struct video_device *devradio;
|
|
|
|
if ( (card = kzalloc( sizeof( struct gemtek_pci_card ), GFP_KERNEL )) == NULL ) {
|
|
printk( KERN_ERR "gemtek_pci: out of memory\n" );
|
|
return -ENOMEM;
|
|
}
|
|
|
|
if ( pci_enable_device( pci_dev ) )
|
|
goto err_pci;
|
|
|
|
card->iobase = pci_resource_start( pci_dev, 0 );
|
|
card->length = pci_resource_len( pci_dev, 0 );
|
|
|
|
if ( request_region( card->iobase, card->length, card_names[pci_id->driver_data] ) == NULL ) {
|
|
printk( KERN_ERR "gemtek_pci: i/o port already in use\n" );
|
|
goto err_pci;
|
|
}
|
|
|
|
pci_set_drvdata( pci_dev, card );
|
|
|
|
if ( (devradio = kmalloc( sizeof( struct video_device ), GFP_KERNEL )) == NULL ) {
|
|
printk( KERN_ERR "gemtek_pci: out of memory\n" );
|
|
goto err_video;
|
|
}
|
|
*devradio = vdev_template;
|
|
|
|
if (video_register_device(devradio, VFL_TYPE_RADIO, nr_radio) < 0) {
|
|
kfree( devradio );
|
|
goto err_video;
|
|
}
|
|
|
|
card->videodev = devradio;
|
|
video_set_drvdata(devradio, card);
|
|
gemtek_pci_mute( card );
|
|
|
|
printk( KERN_INFO "Gemtek PCI Radio (rev. %d) found at 0x%04x-0x%04x.\n",
|
|
pci_dev->revision, card->iobase, card->iobase + card->length - 1 );
|
|
|
|
return 0;
|
|
|
|
err_video:
|
|
release_region( card->iobase, card->length );
|
|
|
|
err_pci:
|
|
kfree( card );
|
|
return -ENODEV;
|
|
}
|
|
|
|
static void __devexit gemtek_pci_remove( struct pci_dev *pci_dev )
|
|
{
|
|
struct gemtek_pci_card *card = pci_get_drvdata( pci_dev );
|
|
|
|
video_unregister_device( card->videodev );
|
|
kfree( card->videodev );
|
|
|
|
release_region( card->iobase, card->length );
|
|
|
|
if ( mx )
|
|
gemtek_pci_mute( card );
|
|
|
|
kfree( card );
|
|
|
|
pci_set_drvdata( pci_dev, NULL );
|
|
}
|
|
|
|
static struct pci_driver gemtek_pci_driver =
|
|
{
|
|
.name = "gemtek_pci",
|
|
.id_table = gemtek_pci_id,
|
|
.probe = gemtek_pci_probe,
|
|
.remove = __devexit_p(gemtek_pci_remove),
|
|
};
|
|
|
|
static int __init gemtek_pci_init_module( void )
|
|
{
|
|
return pci_register_driver( &gemtek_pci_driver );
|
|
}
|
|
|
|
static void __exit gemtek_pci_cleanup_module( void )
|
|
{
|
|
pci_unregister_driver(&gemtek_pci_driver);
|
|
}
|
|
|
|
MODULE_AUTHOR( "Vladimir Shebordaev <vshebordaev@mail.ru>" );
|
|
MODULE_DESCRIPTION( "The video4linux driver for the Gemtek PCI Radio Card" );
|
|
MODULE_LICENSE("GPL");
|
|
|
|
module_param(mx, bool, 0);
|
|
MODULE_PARM_DESC( mx, "single digit: 1 - turn off the turner upon module exit (default), 0 - do not" );
|
|
module_param(nr_radio, int, 0);
|
|
MODULE_PARM_DESC( nr_radio, "video4linux device number to use");
|
|
|
|
module_init( gemtek_pci_init_module );
|
|
module_exit( gemtek_pci_cleanup_module );
|
|
|