kernel-ark/drivers/media/radio/radio-maxiradio.c
Jesper Juhl 77933d7276 [PATCH] clean up inline static vs static inline
`gcc -W' likes to complain if the static keyword is not at the beginning of
the declaration.  This patch fixes all remaining occurrences of "inline
static" up with "static inline" in the entire kernel tree (140 occurrences in
47 files).

While making this change I came across a few lines with trailing whitespace
that I also fixed up, I have also added or removed a blank line or two here
and there, but there are no functional changes in the patch.

Signed-off-by: Jesper Juhl <juhl-lkml@dif.dk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-07-27 16:26:20 -07:00

350 lines
8.1 KiB
C

/*
* Guillemot Maxi Radio FM 2000 PCI radio card driver for Linux
* (C) 2001 Dimitromanolakis Apostolos <apdim@grecian.net>
*
* Based in the radio Maestro PCI driver. Actually it uses the same chip
* for radio but different pci controller.
*
* I didn't have any specs I reversed engineered the protocol from
* the windows driver (radio.dll).
*
* The card uses the TEA5757 chip that includes a search function but it
* is useless as I haven't found any way to read back the frequency. If
* anybody does please mail me.
*
* For the pdf file see:
* http://www.semiconductors.philips.com/pip/TEA5757H/V1
*
*
* CHANGES:
* 0.75b
* - better pci interface thanks to Francois Romieu <romieu@cogenit.fr>
*
* 0.75
* - tiding up
* - removed support for multiple devices as it didn't work anyway
*
* BUGS:
* - card unmutes if you change frequency
*
*/
#include <linux/module.h>
#include <linux/init.h>
#include <linux/ioport.h>
#include <linux/delay.h>
#include <linux/sched.h>
#include <asm/io.h>
#include <asm/uaccess.h>
#include <asm/semaphore.h>
#include <linux/pci.h>
#include <linux/videodev.h>
/* version 0.75 Sun Feb 4 22:51:27 EET 2001 */
#define DRIVER_VERSION "0.75"
#ifndef PCI_VENDOR_ID_GUILLEMOT
#define PCI_VENDOR_ID_GUILLEMOT 0x5046
#endif
#ifndef PCI_DEVICE_ID_GUILLEMOT
#define PCI_DEVICE_ID_GUILLEMOT_MAXIRADIO 0x1001
#endif
/* TEA5757 pin mappings */
static const int clk = 1, data = 2, wren = 4, mo_st = 8, power = 16 ;
static int radio_nr = -1;
module_param(radio_nr, int, 0);
#define FREQ_LO 50*16000
#define FREQ_HI 150*16000
#define FREQ_IF 171200 /* 10.7*16000 */
#define FREQ_STEP 200 /* 12.5*16 */
#define FREQ2BITS(x) ((( (unsigned int)(x)+FREQ_IF+(FREQ_STEP<<1))\
/(FREQ_STEP<<2))<<2) /* (x==fmhz*16*1000) -> bits */
#define BITS2FREQ(x) ((x) * FREQ_STEP - FREQ_IF)
static int radio_ioctl(struct inode *inode, struct file *file,
unsigned int cmd, unsigned long arg);
static struct file_operations maxiradio_fops = {
.owner = THIS_MODULE,
.open = video_exclusive_open,
.release = video_exclusive_release,
.ioctl = radio_ioctl,
.llseek = no_llseek,
};
static struct video_device maxiradio_radio =
{
.owner = THIS_MODULE,
.name = "Maxi Radio FM2000 radio",
.type = VID_TYPE_TUNER,
.hardware = VID_HARDWARE_SF16MI,
.fops = &maxiradio_fops,
};
static struct radio_device
{
__u16 io, /* base of radio io */
muted, /* VIDEO_AUDIO_MUTE */
stereo, /* VIDEO_TUNER_STEREO_ON */
tuned; /* signal strength (0 or 0xffff) */
unsigned long freq;
struct semaphore lock;
} radio_unit = {0, 0, 0, 0, };
static void outbit(unsigned long bit, __u16 io)
{
if(bit != 0)
{
outb( power|wren|data ,io); udelay(4);
outb( power|wren|data|clk ,io); udelay(4);
outb( power|wren|data ,io); udelay(4);
}
else
{
outb( power|wren ,io); udelay(4);
outb( power|wren|clk ,io); udelay(4);
outb( power|wren ,io); udelay(4);
}
}
static void turn_power(__u16 io, int p)
{
if(p != 0) outb(power, io); else outb(0,io);
}
static void set_freq(__u16 io, __u32 data)
{
unsigned long int si;
int bl;
/* TEA5757 shift register bits (see pdf) */
outbit(0,io); // 24 search
outbit(1,io); // 23 search up/down
outbit(0,io); // 22 stereo/mono
outbit(0,io); // 21 band
outbit(0,io); // 20 band (only 00=FM works I think)
outbit(0,io); // 19 port ?
outbit(0,io); // 18 port ?
outbit(0,io); // 17 search level
outbit(0,io); // 16 search level
si = 0x8000;
for(bl = 1; bl <= 16 ; bl++) { outbit(data & si,io); si >>=1; }
outb(power,io);
}
static int get_stereo(__u16 io)
{
outb(power,io); udelay(4);
return !(inb(io) & mo_st);
}
static int get_tune(__u16 io)
{
outb(power+clk,io); udelay(4);
return !(inb(io) & mo_st);
}
static inline int radio_function(struct inode *inode, struct file *file,
unsigned int cmd, void *arg)
{
struct video_device *dev = video_devdata(file);
struct radio_device *card=dev->priv;
switch(cmd) {
case VIDIOCGCAP: {
struct video_capability *v = arg;
memset(v,0,sizeof(*v));
strcpy(v->name, "Maxi Radio FM2000 radio");
v->type=VID_TYPE_TUNER;
v->channels=v->audios=1;
return 0;
}
case VIDIOCGTUNER: {
struct video_tuner *v = arg;
if(v->tuner)
return -EINVAL;
card->stereo = 0xffff * get_stereo(card->io);
card->tuned = 0xffff * get_tune(card->io);
v->flags = VIDEO_TUNER_LOW | card->stereo;
v->signal = card->tuned;
strcpy(v->name, "FM");
v->rangelow = FREQ_LO;
v->rangehigh = FREQ_HI;
v->mode = VIDEO_MODE_AUTO;
return 0;
}
case VIDIOCSTUNER: {
struct video_tuner *v = arg;
if(v->tuner!=0)
return -EINVAL;
return 0;
}
case VIDIOCGFREQ: {
unsigned long *freq = arg;
*freq = card->freq;
return 0;
}
case VIDIOCSFREQ: {
unsigned long *freq = arg;
if (*freq < FREQ_LO || *freq > FREQ_HI)
return -EINVAL;
card->freq = *freq;
set_freq(card->io, FREQ2BITS(card->freq));
msleep(125);
return 0;
}
case VIDIOCGAUDIO: {
struct video_audio *v = arg;
memset(v,0,sizeof(*v));
strcpy(v->name, "Radio");
v->flags=VIDEO_AUDIO_MUTABLE | card->muted;
v->mode=VIDEO_SOUND_STEREO;
return 0;
}
case VIDIOCSAUDIO: {
struct video_audio *v = arg;
if(v->audio)
return -EINVAL;
card->muted = v->flags & VIDEO_AUDIO_MUTE;
if(card->muted)
turn_power(card->io, 0);
else
set_freq(card->io, FREQ2BITS(card->freq));
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;
v->teletext=VIDEO_NO_UNIT;
return 0;
}
default: return -ENOIOCTLCMD;
}
}
static int radio_ioctl(struct inode *inode, struct file *file,
unsigned int cmd, unsigned long arg)
{
struct video_device *dev = video_devdata(file);
struct radio_device *card=dev->priv;
int ret;
down(&card->lock);
ret = video_usercopy(inode, file, cmd, arg, radio_function);
up(&card->lock);
return ret;
}
MODULE_AUTHOR("Dimitromanolakis Apostolos, apdim@grecian.net");
MODULE_DESCRIPTION("Radio driver for the Guillemot Maxi Radio FM2000 radio.");
MODULE_LICENSE("GPL");
static int __devinit maxiradio_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
{
if(!request_region(pci_resource_start(pdev, 0),
pci_resource_len(pdev, 0), "Maxi Radio FM 2000")) {
printk(KERN_ERR "radio-maxiradio: can't reserve I/O ports\n");
goto err_out;
}
if (pci_enable_device(pdev))
goto err_out_free_region;
radio_unit.io = pci_resource_start(pdev, 0);
init_MUTEX(&radio_unit.lock);
maxiradio_radio.priv = &radio_unit;
if(video_register_device(&maxiradio_radio, VFL_TYPE_RADIO, radio_nr)==-1) {
printk("radio-maxiradio: can't register device!");
goto err_out_free_region;
}
printk(KERN_INFO "radio-maxiradio: version "
DRIVER_VERSION
" time "
__TIME__ " "
__DATE__
"\n");
printk(KERN_INFO "radio-maxiradio: found Guillemot MAXI Radio device (io = 0x%x)\n",
radio_unit.io);
return 0;
err_out_free_region:
release_region(pci_resource_start(pdev, 0), pci_resource_len(pdev, 0));
err_out:
return -ENODEV;
}
static void __devexit maxiradio_remove_one(struct pci_dev *pdev)
{
video_unregister_device(&maxiradio_radio);
release_region(pci_resource_start(pdev, 0), pci_resource_len(pdev, 0));
}
static struct pci_device_id maxiradio_pci_tbl[] = {
{ PCI_VENDOR_ID_GUILLEMOT, PCI_DEVICE_ID_GUILLEMOT_MAXIRADIO,
PCI_ANY_ID, PCI_ANY_ID, },
{ 0,}
};
MODULE_DEVICE_TABLE(pci, maxiradio_pci_tbl);
static struct pci_driver maxiradio_driver = {
.name = "radio-maxiradio",
.id_table = maxiradio_pci_tbl,
.probe = maxiradio_init_one,
.remove = __devexit_p(maxiradio_remove_one),
};
static int __init maxiradio_radio_init(void)
{
return pci_module_init(&maxiradio_driver);
}
static void __exit maxiradio_radio_exit(void)
{
pci_unregister_driver(&maxiradio_driver);
}
module_init(maxiradio_radio_init);
module_exit(maxiradio_radio_exit);