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linux/drivers/media/radio/radio-maestro.c
Tim Schmielau cd354f1ae7 [PATCH] remove many unneeded #includes of sched.h 
After Al Viro (finally) succeeded in removing the sched.h #include in module.h
recently, it makes sense again to remove other superfluous sched.h includes.
There are quite a lot of files which include it but don't actually need
anything defined in there.  Presumably these includes were once needed for
macros that used to live in sched.h, but moved to other header files in the
course of cleaning it up.

To ease the pain, this time I did not fiddle with any header files and only
removed #includes from .c-files, which tend to cause less trouble.

Compile tested against 2.6.20-rc2 and 2.6.20-rc2-mm2 (with offsets) on alpha,
arm, i386, ia64, mips, powerpc, and x86_64 with allnoconfig, defconfig,
allmodconfig, and allyesconfig as well as a few randconfigs on x86_64 and all
configs in arch/arm/configs on arm.  I also checked that no new warnings were
introduced by the patch (actually, some warnings are removed that were emitted
by unnecessarily included header files).

Signed-off-by: Tim Schmielau <tim@physik3.uni-rostock.de>
Acked-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-14 08:09:54 -08:00

445 lines
10 KiB
C
Raw Blame History

/* Maestro PCI sound card radio driver for Linux support
* (c) 2000 A. Tlalka, atlka@pg.gda.pl
* Notes on the hardware
*
* + Frequency control is done digitally
* + No volume control - only mute/unmute - you have to use Aux line volume
* control on Maestro card to set the volume
* + Radio status (tuned/not_tuned and stereo/mono) is valid some time after
* frequency setting (>100ms) and only when the radio is unmuted.
* version 0.02
* + io port is automatically detected - only the first radio is used
* version 0.03
* + thread access locking additions
* version 0.04
* + code improvements
* + VIDEO_TUNER_LOW is permanent
*
* Converted to V4L2 API by Mauro Carvalho Chehab <mchehab@infradead.org>
*/
#include <linux/module.h>
#include <linux/init.h>
#include <linux/ioport.h>
#include <linux/delay.h>
#include <asm/io.h>
#include <asm/uaccess.h>
#include <linux/mutex.h>
#include <linux/pci.h>
#include <linux/videodev2.h>
#include <media/v4l2-common.h>
#include <linux/version.h> /* for KERNEL_VERSION MACRO */
#define RADIO_VERSION KERNEL_VERSION(0,0,6)
#define DRIVER_VERSION "0.06"
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,
}
};
#define GPIO_DATA 0x60 /* port offset from ESS_IO_BASE */
#define IO_MASK 4 /* mask register offset from GPIO_DATA
bits 1=unmask write to given bit */
#define IO_DIR 8 /* direction register offset from GPIO_DATA
bits 0/1=read/write direction */
#define GPIO6 0x0040 /* mask bits for GPIO lines */
#define GPIO7 0x0080
#define GPIO8 0x0100
#define GPIO9 0x0200
#define STR_DATA GPIO6 /* radio TEA5757 pins and GPIO bits */
#define STR_CLK GPIO7
#define STR_WREN GPIO8
#define STR_MOST GPIO9
#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_nr = -1;
module_param(radio_nr, int, 0);
static int radio_ioctl(struct inode *inode, struct file *file,
unsigned int cmd, unsigned long arg);
static int maestro_probe(struct pci_dev *pdev, const struct pci_device_id *ent);
static void maestro_remove(struct pci_dev *pdev);
static struct pci_device_id maestro_r_pci_tbl[] = {
{ PCI_DEVICE(PCI_VENDOR_ID_ESS, PCI_DEVICE_ID_ESS_ESS1968),
.class = PCI_CLASS_MULTIMEDIA_AUDIO << 8,
.class_mask = 0xffff00 },
{ PCI_DEVICE(PCI_VENDOR_ID_ESS, PCI_DEVICE_ID_ESS_ESS1978),
.class = PCI_CLASS_MULTIMEDIA_AUDIO << 8,
.class_mask = 0xffff00 },
{ 0 }
};
MODULE_DEVICE_TABLE(pci, maestro_r_pci_tbl);
static struct pci_driver maestro_r_driver = {
.name = "maestro_radio",
.id_table = maestro_r_pci_tbl,
.probe = maestro_probe,
.remove = __devexit_p(maestro_remove),
};
static const struct file_operations maestro_fops = {
.owner = THIS_MODULE,
.open = video_exclusive_open,
.release = video_exclusive_release,
.ioctl = radio_ioctl,
.compat_ioctl = v4l_compat_ioctl32,
.llseek = no_llseek,
};
static struct video_device maestro_radio = {
.name = "Maestro radio",
.type = VID_TYPE_TUNER,
.hardware = 0,
.fops = &maestro_fops,
};
struct radio_device {
u16 io, /* base of Maestro card radio io (GPIO_DATA)*/
muted, /* VIDEO_AUDIO_MUTE */
stereo, /* VIDEO_TUNER_STEREO_ON */
tuned; /* signal strength (0 or 0xffff) */
struct mutex lock;
};
static u32 radio_bits_get(struct radio_device *dev)
{
register u16 io=dev->io, l, rdata;
register u32 data=0;
u16 omask;
omask = inw(io + IO_MASK);
outw(~(STR_CLK | STR_WREN), io + IO_MASK);
outw(0, io);
udelay(16);
for (l=24;l--;) {
outw(STR_CLK, io); /* HI state */
udelay(2);
if(!l)
dev->tuned = inw(io) & STR_MOST ? 0 : 0xffff;
outw(0, io); /* LO state */
udelay(2);
data <<= 1; /* shift data */
rdata = inw(io);
if(!l)
dev->stereo = rdata & STR_MOST ?
0 : 1;
else
if(rdata & STR_DATA)
data++;
udelay(2);
}
if(dev->muted)
outw(STR_WREN, io);
udelay(4);
outw(omask, io + IO_MASK);
return data & 0x3ffe;
}
static void radio_bits_set(struct radio_device *dev, u32 data)
{
register u16 io=dev->io, l, bits;
u16 omask, odir;
omask = inw(io + IO_MASK);
odir = (inw(io + IO_DIR) & ~STR_DATA) | (STR_CLK | STR_WREN);
outw(odir | STR_DATA, io + IO_DIR);
outw(~(STR_DATA | STR_CLK | STR_WREN), io + IO_MASK);
udelay(16);
for (l=25;l;l--) {
bits = ((data >> 18) & STR_DATA) | STR_WREN ;
data <<= 1; /* shift data */
outw(bits, io); /* start strobe */
udelay(2);
outw(bits | STR_CLK, io); /* HI level */
udelay(2);
outw(bits, io); /* LO level */
udelay(4);
}
if(!dev->muted)
outw(0, io);
udelay(4);
outw(omask, io + IO_MASK);
outw(odir, io + IO_DIR);
msleep(125);
}
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 = video_get_drvdata(dev);
switch (cmd) {
case VIDIOC_QUERYCAP:
{
struct v4l2_capability *v = arg;
memset(v,0,sizeof(*v));
strlcpy(v->driver, "radio-maestro", sizeof (v->driver));
strlcpy(v->card, "Maestro Radio", sizeof (v->card));
sprintf(v->bus_info,"PCI");
v->version = RADIO_VERSION;
v->capabilities = V4L2_CAP_TUNER;
return 0;
}
case VIDIOC_G_TUNER:
{
struct v4l2_tuner *v = arg;
if (v->index > 0)
return -EINVAL;
(void)radio_bits_get(card);
memset(v,0,sizeof(*v));
strcpy(v->name, "FM");
v->type = V4L2_TUNER_RADIO;
v->rangelow = FREQ_LO;
v->rangehigh = FREQ_HI;
v->rxsubchans =V4L2_TUNER_SUB_MONO|V4L2_TUNER_SUB_STEREO;
v->capability=V4L2_TUNER_CAP_LOW;
if(card->stereo)
v->audmode = V4L2_TUNER_MODE_STEREO;
else
v->audmode = V4L2_TUNER_MODE_MONO;
v->signal=card->tuned;
return 0;
}
case VIDIOC_S_TUNER:
{
struct v4l2_tuner *v = arg;
if (v->index > 0)
return -EINVAL;
return 0;
}
case VIDIOC_S_FREQUENCY:
{
struct v4l2_frequency *f = arg;
if (f->frequency < FREQ_LO || f->frequency > FREQ_HI)
return -EINVAL;
radio_bits_set(card, FREQ2BITS(f->frequency));
return 0;
}
case VIDIOC_G_FREQUENCY:
{
struct v4l2_frequency *f = arg;
f->type = V4L2_TUNER_RADIO;
f->frequency = BITS2FREQ(radio_bits_get(card));
return 0;
}
case VIDIOC_QUERYCTRL:
{
struct v4l2_queryctrl *qc = arg;
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;
}
case VIDIOC_G_CTRL:
{
struct v4l2_control *ctrl= arg;
switch (ctrl->id) {
case V4L2_CID_AUDIO_MUTE:
ctrl->value=card->muted;
return (0);
}
return -EINVAL;
}
case VIDIOC_S_CTRL:
{
struct v4l2_control *ctrl= arg;
switch (ctrl->id) {
case V4L2_CID_AUDIO_MUTE:
{
register u16 io = card->io;
register u16 omask = inw(io + IO_MASK);
outw(~STR_WREN, io + IO_MASK);
outw((card->muted = ctrl->value ) ?
STR_WREN : 0, io);
udelay(4);
outw(omask, io + IO_MASK);
msleep(125);
return (0);
}
}
return -EINVAL;
}
default:
return v4l_compat_translate_ioctl(inode,file,cmd,arg,
radio_function);
}
}
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 = video_get_drvdata(dev);
int ret;
mutex_lock(&card->lock);
ret = video_usercopy(inode, file, cmd, arg, radio_function);
mutex_unlock(&card->lock);
return ret;
}
static u16 __devinit radio_power_on(struct radio_device *dev)
{
register u16 io = dev->io;
register u32 ofreq;
u16 omask, odir;
omask = inw(io + IO_MASK);
odir = (inw(io + IO_DIR) & ~STR_DATA) | (STR_CLK | STR_WREN);
outw(odir & ~STR_WREN, io + IO_DIR);
dev->muted = inw(io) & STR_WREN ? 0 : 1;
outw(odir, io + IO_DIR);
outw(~(STR_WREN | STR_CLK), io + IO_MASK);
outw(dev->muted ? 0 : STR_WREN, io);
udelay(16);
outw(omask, io + IO_MASK);
ofreq = radio_bits_get(dev);
if ((ofreq < FREQ2BITS(FREQ_LO)) || (ofreq > FREQ2BITS(FREQ_HI)))
ofreq = FREQ2BITS(FREQ_LO);
radio_bits_set(dev, ofreq);
return (ofreq == radio_bits_get(dev));
}
static int __devinit maestro_probe(struct pci_dev *pdev,
const struct pci_device_id *ent)
{
struct radio_device *radio_unit;
struct video_device *maestro_radio_inst;
int retval;
retval = pci_enable_device(pdev);
if (retval) {
dev_err(&pdev->dev, "enabling pci device failed!\n");
goto err;
}
retval = -ENOMEM;
radio_unit = kzalloc(sizeof(*radio_unit), GFP_KERNEL);
if (radio_unit == NULL) {
dev_err(&pdev->dev, "not enough memory\n");
goto err;
}
radio_unit->io = pci_resource_start(pdev, 0) + GPIO_DATA;
mutex_init(&radio_unit->lock);
maestro_radio_inst = video_device_alloc();
if (maestro_radio_inst == NULL) {
dev_err(&pdev->dev, "not enough memory\n");
goto errfr;
}
memcpy(maestro_radio_inst, &maestro_radio, sizeof(maestro_radio));
video_set_drvdata(maestro_radio_inst, radio_unit);
pci_set_drvdata(pdev, maestro_radio_inst);
retval = video_register_device(maestro_radio_inst, VFL_TYPE_RADIO,
radio_nr);
if (retval) {
printk(KERN_ERR "can't register video device!\n");
goto errfr1;
}
if (!radio_power_on(radio_unit)) {
retval = -EIO;
goto errunr;
}
dev_info(&pdev->dev, "version " DRIVER_VERSION " time " __TIME__ " "
__DATE__ "\n");
dev_info(&pdev->dev, "radio chip initialized\n");
return 0;
errunr:
video_unregister_device(maestro_radio_inst);
errfr1:
kfree(maestro_radio_inst);
errfr:
kfree(radio_unit);
err:
return retval;
}
static void __devexit maestro_remove(struct pci_dev *pdev)
{
struct video_device *vdev = pci_get_drvdata(pdev);
video_unregister_device(vdev);
}
static int __init maestro_radio_init(void)
{
int retval = pci_register_driver(&maestro_r_driver);
if (retval)
printk(KERN_ERR "error during registration pci driver\n");
return retval;
}
static void __exit maestro_radio_exit(void)
{
pci_unregister_driver(&maestro_r_driver);
}
module_init(maestro_radio_init);
module_exit(maestro_radio_exit);
MODULE_AUTHOR("Adam Tlalka, atlka@pg.gda.pl");
MODULE_DESCRIPTION("Radio driver for the Maestro PCI sound card radio.");
MODULE_LICENSE("GPL");
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