iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

V4L/DVB (10893): radio-zoltrix: convert to v4l2_device.

Browse Source 
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Hans Verkuil 2009-03-06 13:55:34 -03:00 committed by Mauro Carvalho Chehab
parent f1bfe89b67
commit ec632c8a10
1 changed files with 180 additions and 203 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

383
drivers/media/radio/radio-zoltrix.c
View File

@ -33,33 +33,17 @@
#include <linux/init.h> /* Initdata */ #include <linux/init.h> /* Initdata */
#include <linux/ioport.h> /* request_region */ #include <linux/ioport.h> /* request_region */
#include <linux/delay.h> /* udelay, msleep */ #include <linux/delay.h> /* udelay, msleep */
#include <asm/io.h> /* outb, outb_p */
#include <asm/uaccess.h> /* copy to/from user */
#include <linux/videodev2.h> /* kernel radio structs */ #include <linux/videodev2.h> /* kernel radio structs */
#include <media/v4l2-common.h> #include <linux/mutex.h>
#include <linux/version.h> /* for KERNEL_VERSION MACRO */
#include <linux/io.h> /* outb, outb_p */
#include <linux/uaccess.h> /* copy to/from user */
#include <media/v4l2-device.h>
#include <media/v4l2-ioctl.h> #include <media/v4l2-ioctl.h>
#include <linux/version.h> /* for KERNEL_VERSION MACRO */ MODULE_AUTHOR("C.van Schaik");
#define RADIO_VERSION KERNEL_VERSION(0,0,2) MODULE_DESCRIPTION("A driver for the Zoltrix Radio Plus.");
MODULE_LICENSE("GPL");
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 = 4096,
.default_value = 0xff,
.type = V4L2_CTRL_TYPE_INTEGER,
}
};
#ifndef CONFIG_RADIO_ZOLTRIX_PORT #ifndef CONFIG_RADIO_ZOLTRIX_PORT
#define CONFIG_RADIO_ZOLTRIX_PORT -1 #define CONFIG_RADIO_ZOLTRIX_PORT -1
@ -68,9 +52,16 @@ static struct v4l2_queryctrl radio_qctrl[] = {
static int io = CONFIG_RADIO_ZOLTRIX_PORT; static int io = CONFIG_RADIO_ZOLTRIX_PORT;
static int radio_nr = -1; static int radio_nr = -1;
struct zol_device { module_param(io, int, 0);
unsigned long in_use; MODULE_PARM_DESC(io, "I/O address of the Zoltrix Radio Plus (0x20c or 0x30c)");
int port; module_param(radio_nr, int, 0);
#define RADIO_VERSION KERNEL_VERSION(0, 0, 2)
struct zoltrix {
struct v4l2_device v4l2_dev;
struct video_device vdev;
int io;
int curvol; int curvol;
unsigned long curfreq; unsigned long curfreq;
int muted; int muted;
@ -78,161 +69,158 @@ struct zol_device {
struct mutex lock; struct mutex lock;
}; };
static int zol_setvol(struct zol_device *dev, int vol) static struct zoltrix zoltrix_card;
static int zol_setvol(struct zoltrix *zol, int vol)
{ {
dev->curvol = vol; zol->curvol = vol;
if (dev->muted) if (zol->muted)
return 0; return 0;
mutex_lock(&dev->lock); mutex_lock(&zol->lock);
if (vol == 0) { if (vol == 0) {
outb(0, io); outb(0, zol->io);
outb(0, io); outb(0, zol->io);
inb(io + 3); /* Zoltrix needs to be read to confirm */ inb(zol->io + 3); /* Zoltrix needs to be read to confirm */
mutex_unlock(&dev->lock); mutex_unlock(&zol->lock);
return 0; return 0;
} }
outb(dev->curvol-1, io); outb(zol->curvol-1, zol->io);
msleep(10); msleep(10);
inb(io + 2); inb(zol->io + 2);
mutex_unlock(&dev->lock); mutex_unlock(&zol->lock);
return 0; return 0;
} }
static void zol_mute(struct zol_device *dev) static void zol_mute(struct zoltrix *zol)
{ {
dev->muted = 1; zol->muted = 1;
mutex_lock(&dev->lock); mutex_lock(&zol->lock);
outb(0, io); outb(0, zol->io);
outb(0, io); outb(0, zol->io);
inb(io + 3); /* Zoltrix needs to be read to confirm */ inb(zol->io + 3); /* Zoltrix needs to be read to confirm */
mutex_unlock(&dev->lock); mutex_unlock(&zol->lock);
} }
static void zol_unmute(struct zol_device *dev) static void zol_unmute(struct zoltrix *zol)
{ {
dev->muted = 0; zol->muted = 0;
zol_setvol(dev, dev->curvol); zol_setvol(zol, zol->curvol);
} }
static int zol_setfreq(struct zol_device *dev, unsigned long freq) static int zol_setfreq(struct zoltrix *zol, unsigned long freq)
{ {
/* tunes the radio to the desired frequency */ /* tunes the radio to the desired frequency */
struct v4l2_device *v4l2_dev = &zol->v4l2_dev;
unsigned long long bitmask, f, m; unsigned long long bitmask, f, m;
unsigned int stereo = dev->stereo; unsigned int stereo = zol->stereo;
int i; int i;
if (freq == 0) { if (freq == 0) {
printk(KERN_WARNING "zoltrix: received zero freq. Failed to set.\n"); v4l2_warn(v4l2_dev, "cannot set a frequency of 0.\n");
return -EINVAL; return -EINVAL;
} }
m = (freq / 160 - 8800) * 2; m = (freq / 160 - 8800) * 2;
f = (unsigned long long) m + 0x4d1c; f = (unsigned long long)m + 0x4d1c;
bitmask = 0xc480402c10080000ull; bitmask = 0xc480402c10080000ull;
i = 45; i = 45;
mutex_lock(&dev->lock); mutex_lock(&zol->lock);
outb(0, io); zol->curfreq = freq;
outb(0, io);
inb(io + 3); /* Zoltrix needs to be read to confirm */
outb(0x40, io); outb(0, zol->io);
outb(0xc0, io); outb(0, zol->io);
inb(zol->io + 3); /* Zoltrix needs to be read to confirm */
bitmask = (bitmask ^ ((f & 0xff) << 47) ^ ((f & 0xff00) << 30) ^ ( stereo << 31)); outb(0x40, zol->io);
outb(0xc0, zol->io);
bitmask = (bitmask ^ ((f & 0xff) << 47) ^ ((f & 0xff00) << 30) ^ (stereo << 31));
while (i--) { while (i--) {
if ((bitmask & 0x8000000000000000ull) != 0) { if ((bitmask & 0x8000000000000000ull) != 0) {
outb(0x80, io); outb(0x80, zol->io);
udelay(50); udelay(50);
outb(0x00, io); outb(0x00, zol->io);
udelay(50); udelay(50);
outb(0x80, io); outb(0x80, zol->io);
udelay(50); udelay(50);
} else { } else {
outb(0xc0, io); outb(0xc0, zol->io);
udelay(50); udelay(50);
outb(0x40, io); outb(0x40, zol->io);
udelay(50); udelay(50);
outb(0xc0, io); outb(0xc0, zol->io);
udelay(50); udelay(50);
} }
bitmask *= 2; bitmask *= 2;
} }
/* termination sequence */ /* termination sequence */
outb(0x80, io); outb(0x80, zol->io);
outb(0xc0, io); outb(0xc0, zol->io);
outb(0x40, io); outb(0x40, zol->io);
udelay(1000); udelay(1000);
inb(io+2); inb(zol->io + 2);
udelay(1000); udelay(1000);
if (dev->muted) if (zol->muted) {
{ outb(0, zol->io);
outb(0, io); outb(0, zol->io);
outb(0, io); inb(zol->io + 3);
inb(io + 3);
udelay(1000); udelay(1000);
} }
mutex_unlock(&dev->lock); mutex_unlock(&zol->lock);
if(!dev->muted) if (!zol->muted)
{ zol_setvol(zol, zol->curvol);
zol_setvol(dev, dev->curvol);
}
return 0; return 0;
} }
/* Get signal strength */ /* Get signal strength */
static int zol_getsigstr(struct zoltrix *zol)
static int zol_getsigstr(struct zol_device *dev)
{ {
int a, b; int a, b;
mutex_lock(&dev->lock); mutex_lock(&zol->lock);
outb(0x00, io); /* This stuff I found to do nothing */ outb(0x00, zol->io); /* This stuff I found to do nothing */
outb(dev->curvol, io); outb(zol->curvol, zol->io);
msleep(20); msleep(20);
a = inb(io); a = inb(zol->io);
msleep(10); msleep(10);
b = inb(io); b = inb(zol->io);
mutex_unlock(&dev->lock); mutex_unlock(&zol->lock);
if (a != b) if (a != b)
return (0); return 0;
if ((a == 0xcf) || (a == 0xdf) /* I found this out by playing */ /* I found this out by playing with a binary scanner on the card io */
|| (a == 0xef)) /* with a binary scanner on the card io */ return a == 0xcf || a == 0xdf || a == 0xef;
return (1);
return (0);
} }
static int zol_is_stereo (struct zol_device *dev) static int zol_is_stereo(struct zoltrix *zol)
{ {
int x1, x2; int x1, x2;
mutex_lock(&dev->lock); mutex_lock(&zol->lock);
outb(0x00, io); outb(0x00, zol->io);
outb(dev->curvol, io); outb(zol->curvol, zol->io);
msleep(20); msleep(20);
x1 = inb(io); x1 = inb(zol->io);
msleep(10); msleep(10);
x2 = inb(io); x2 = inb(zol->io);
mutex_unlock(&dev->lock); mutex_unlock(&zol->lock);
if ((x1 == x2) && (x1 == 0xcf)) return x1 == x2 && x1 == 0xcf;
return 1;
return 0;
} }
static int vidioc_querycap(struct file *file, void *priv, static int vidioc_querycap(struct file *file, void *priv,
@ -240,59 +228,54 @@ static int vidioc_querycap(struct file *file, void *priv,
{ {
strlcpy(v->driver, "radio-zoltrix", sizeof(v->driver)); strlcpy(v->driver, "radio-zoltrix", sizeof(v->driver));
strlcpy(v->card, "Zoltrix Radio", sizeof(v->card)); strlcpy(v->card, "Zoltrix Radio", sizeof(v->card));
sprintf(v->bus_info, "ISA"); strlcpy(v->bus_info, "ISA", sizeof(v->bus_info));
v->version = RADIO_VERSION; v->version = RADIO_VERSION;
v->capabilities = V4L2_CAP_TUNER; v->capabilities = V4L2_CAP_TUNER | V4L2_CAP_RADIO;
return 0; return 0;
} }
static int vidioc_g_tuner(struct file *file, void *priv, static int vidioc_g_tuner(struct file *file, void *priv,
struct v4l2_tuner *v) struct v4l2_tuner *v)
{ {
struct zol_device *zol = video_drvdata(file); struct zoltrix *zol = video_drvdata(file);
if (v->index > 0) if (v->index > 0)
return -EINVAL; return -EINVAL;
strcpy(v->name, "FM"); strlcpy(v->name, "FM", sizeof(v->name));
v->type = V4L2_TUNER_RADIO; v->type = V4L2_TUNER_RADIO;
v->rangelow = (88*16000); v->rangelow = 88 * 16000;
v->rangehigh = (108*16000); v->rangehigh = 108 * 16000;
v->rxsubchans = V4L2_TUNER_SUB_MONO|V4L2_TUNER_SUB_STEREO; v->rxsubchans = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO;
v->capability = V4L2_TUNER_CAP_LOW; v->capability = V4L2_TUNER_CAP_LOW;
if (zol_is_stereo(zol)) if (zol_is_stereo(zol))
v->audmode = V4L2_TUNER_MODE_STEREO; v->audmode = V4L2_TUNER_MODE_STEREO;
else else
v->audmode = V4L2_TUNER_MODE_MONO; v->audmode = V4L2_TUNER_MODE_MONO;
v->signal = 0xFFFF*zol_getsigstr(zol); v->signal = 0xFFFF * zol_getsigstr(zol);
return 0; return 0;
} }
static int vidioc_s_tuner(struct file *file, void *priv, static int vidioc_s_tuner(struct file *file, void *priv,
struct v4l2_tuner *v) struct v4l2_tuner *v)
{ {
if (v->index > 0) return v->index ? -EINVAL : 0;
return -EINVAL;
return 0;
} }
static int vidioc_s_frequency(struct file *file, void *priv, static int vidioc_s_frequency(struct file *file, void *priv,
struct v4l2_frequency *f) struct v4l2_frequency *f)
{ {
struct zol_device *zol = video_drvdata(file); struct zoltrix *zol = video_drvdata(file);
zol->curfreq = f->frequency; if (zol_setfreq(zol, f->frequency) != 0)
if (zol_setfreq(zol, zol->curfreq) != 0) {
printk(KERN_WARNING "zoltrix: Set frequency failed.\n");
return -EINVAL; return -EINVAL;
}
return 0; return 0;
} }
static int vidioc_g_frequency(struct file *file, void *priv, static int vidioc_g_frequency(struct file *file, void *priv,
struct v4l2_frequency *f) struct v4l2_frequency *f)
{ {
struct zol_device *zol = video_drvdata(file); struct zoltrix *zol = video_drvdata(file);
f->type = V4L2_TUNER_RADIO; f->type = V4L2_TUNER_RADIO;
f->frequency = zol->curfreq; f->frequency = zol->curfreq;
@ -302,14 +285,11 @@ static int vidioc_g_frequency(struct file *file, void *priv,
static int vidioc_queryctrl(struct file *file, void *priv, static int vidioc_queryctrl(struct file *file, void *priv,
struct v4l2_queryctrl *qc) struct v4l2_queryctrl *qc)
{ {
int i; switch (qc->id) {
case V4L2_CID_AUDIO_MUTE:
for (i = 0; i < ARRAY_SIZE(radio_qctrl); i++) { return v4l2_ctrl_query_fill(qc, 0, 1, 1, 1);
if (qc->id && qc->id == radio_qctrl[i].id) { case V4L2_CID_AUDIO_VOLUME:
memcpy(qc, &(radio_qctrl[i]), return v4l2_ctrl_query_fill(qc, 0, 65535, 4096, 65535);
sizeof(*qc));
return 0;
}
} }
return -EINVAL; return -EINVAL;
} }
@ -317,7 +297,7 @@ static int vidioc_queryctrl(struct file *file, void *priv,
static int vidioc_g_ctrl(struct file *file, void *priv, static int vidioc_g_ctrl(struct file *file, void *priv,
struct v4l2_control *ctrl) struct v4l2_control *ctrl)
{ {
struct zol_device *zol = video_drvdata(file); struct zoltrix *zol = video_drvdata(file);
switch (ctrl->id) { switch (ctrl->id) {
case V4L2_CID_AUDIO_MUTE: case V4L2_CID_AUDIO_MUTE:
@ -333,7 +313,7 @@ static int vidioc_g_ctrl(struct file *file, void *priv,
static int vidioc_s_ctrl(struct file *file, void *priv, static int vidioc_s_ctrl(struct file *file, void *priv,
struct v4l2_control *ctrl) struct v4l2_control *ctrl)
{ {
struct zol_device *zol = video_drvdata(file); struct zoltrix *zol = video_drvdata(file);
switch (ctrl->id) { switch (ctrl->id) {
case V4L2_CID_AUDIO_MUTE: case V4L2_CID_AUDIO_MUTE:
@ -341,43 +321,30 @@ static int vidioc_s_ctrl(struct file *file, void *priv,
zol_mute(zol); zol_mute(zol);
else { else {
zol_unmute(zol); zol_unmute(zol);
zol_setvol(zol,zol->curvol); zol_setvol(zol, zol->curvol);
} }
return 0; return 0;
case V4L2_CID_AUDIO_VOLUME: case V4L2_CID_AUDIO_VOLUME:
zol_setvol(zol,ctrl->value/4096); zol_setvol(zol, ctrl->value / 4096);
return 0; return 0;
} }
zol->stereo = 1; zol->stereo = 1;
if (zol_setfreq(zol, zol->curfreq) != 0) { if (zol_setfreq(zol, zol->curfreq) != 0)
printk(KERN_WARNING "zoltrix: Set frequency failed.\n");
return -EINVAL; return -EINVAL;
}
#if 0 #if 0
/* FIXME: Implement stereo/mono switch on V4L2 */ /* FIXME: Implement stereo/mono switch on V4L2 */
if (v->mode & VIDEO_SOUND_STEREO) { if (v->mode & VIDEO_SOUND_STEREO) {
zol->stereo = 1; zol->stereo = 1;
zol_setfreq(zol, zol->curfreq); zol_setfreq(zol, zol->curfreq);
} }
if (v->mode & VIDEO_SOUND_MONO) { if (v->mode & VIDEO_SOUND_MONO) {
zol->stereo = 0; zol->stereo = 0;
zol_setfreq(zol, zol->curfreq); zol_setfreq(zol, zol->curfreq);
} }
#endif #endif
return -EINVAL; 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) static int vidioc_g_input(struct file *filp, void *priv, unsigned int *i)
{ {
*i = 0; *i = 0;
@ -386,37 +353,39 @@ static int vidioc_g_input(struct file *filp, void *priv, unsigned int *i)
static int vidioc_s_input(struct file *filp, void *priv, unsigned int i) static int vidioc_s_input(struct file *filp, void *priv, unsigned int i)
{ {
if (i != 0) return i ? -EINVAL : 0;
return -EINVAL; }
static int vidioc_g_audio(struct file *file, void *priv,
struct v4l2_audio *a)
{
a->index = 0;
strlcpy(a->name, "Radio", sizeof(a->name));
a->capability = V4L2_AUDCAP_STEREO;
return 0; return 0;
} }
static int vidioc_s_audio(struct file *file, void *priv, static int vidioc_s_audio(struct file *file, void *priv,
struct v4l2_audio *a) struct v4l2_audio *a)
{ {
if (a->index != 0) return a->index ? -EINVAL : 0;
return -EINVAL; }
static int zoltrix_open(struct file *file)
{
return 0; return 0;
} }
static struct zol_device zoltrix_unit; static int zoltrix_release(struct file *file)
static int zoltrix_exclusive_open(struct file *file)
{ {
return test_and_set_bit(0, &zoltrix_unit.in_use) ? -EBUSY : 0;
}
static int zoltrix_exclusive_release(struct file *file)
{
clear_bit(0, &zoltrix_unit.in_use);
return 0; return 0;
} }
static const struct v4l2_file_operations zoltrix_fops = static const struct v4l2_file_operations zoltrix_fops =
{ {
.owner = THIS_MODULE, .owner = THIS_MODULE,
.open = zoltrix_exclusive_open, .open = zoltrix_open,
.release = zoltrix_exclusive_release, .release = zoltrix_release,
.ioctl = video_ioctl2, .ioctl = video_ioctl2,
}; };
@ -435,67 +404,75 @@ static const struct v4l2_ioctl_ops zoltrix_ioctl_ops = {
.vidioc_s_ctrl = vidioc_s_ctrl, .vidioc_s_ctrl = vidioc_s_ctrl,
}; };
static struct video_device zoltrix_radio = {
.name = "Zoltrix Radio Plus",
.fops = &zoltrix_fops,
.ioctl_ops = &zoltrix_ioctl_ops,
.release = video_device_release_empty,
};
static int __init zoltrix_init(void) static int __init zoltrix_init(void)
{ {
if (io == -1) { struct zoltrix *zol = &zoltrix_card;
printk(KERN_ERR "You must set an I/O address with io=0x???\n"); struct v4l2_device *v4l2_dev = &zol->v4l2_dev;
int res;
strlcpy(v4l2_dev->name, "zoltrix", sizeof(v4l2_dev->name));
zol->io = io;
if (zol->io == -1) {
v4l2_err(v4l2_dev, "You must set an I/O address with io=0x???\n");
return -EINVAL; return -EINVAL;
} }
if ((io != 0x20c) && (io != 0x30c)) { if (zol->io != 0x20c && zol->io != 0x30c) {
printk(KERN_ERR "zoltrix: invalid port, try 0x20c or 0x30c\n"); v4l2_err(v4l2_dev, "invalid port, try 0x20c or 0x30c\n");
return -ENXIO; return -ENXIO;
} }
video_set_drvdata(&zoltrix_radio, &zoltrix_unit); if (!request_region(zol->io, 2, "zoltrix")) {
if (!request_region(io, 2, "zoltrix")) { v4l2_err(v4l2_dev, "port 0x%x already in use\n", zol->io);
printk(KERN_ERR "zoltrix: port 0x%x already in use\n", io);
return -EBUSY; return -EBUSY;
} }
if (video_register_device(&zoltrix_radio, VFL_TYPE_RADIO, radio_nr) < 0) { res = v4l2_device_register(NULL, v4l2_dev);
release_region(io, 2); if (res < 0) {
release_region(zol->io, 2);
v4l2_err(v4l2_dev, "Could not register v4l2_device\n");
return res;
}
strlcpy(zol->vdev.name, v4l2_dev->name, sizeof(zol->vdev.name));
zol->vdev.v4l2_dev = v4l2_dev;
zol->vdev.fops = &zoltrix_fops;
zol->vdev.ioctl_ops = &zoltrix_ioctl_ops;
zol->vdev.release = video_device_release_empty;
video_set_drvdata(&zol->vdev, zol);
if (video_register_device(&zol->vdev, VFL_TYPE_RADIO, radio_nr) < 0) {
v4l2_device_unregister(v4l2_dev);
release_region(zol->io, 2);
return -EINVAL; return -EINVAL;
} }
printk(KERN_INFO "Zoltrix Radio Plus card driver.\n"); v4l2_info(v4l2_dev, "Zoltrix Radio Plus card driver.\n");
mutex_init(&zoltrix_unit.lock); mutex_init(&zol->lock);
/* mute card - prevents noisy bootups */ /* mute card - prevents noisy bootups */
/* this ensures that the volume is all the way down */ /* this ensures that the volume is all the way down */
outb(0, io); outb(0, zol->io);
outb(0, io); outb(0, zol->io);
msleep(20); msleep(20);
inb(io + 3); inb(zol->io + 3);
zoltrix_unit.curvol = 0; zol->curvol = 0;
zoltrix_unit.stereo = 1; zol->stereo = 1;
return 0; return 0;
} }
MODULE_AUTHOR("C.van Schaik"); static void __exit zoltrix_exit(void)
MODULE_DESCRIPTION("A driver for the Zoltrix Radio Plus.");
MODULE_LICENSE("GPL");
module_param(io, int, 0);
MODULE_PARM_DESC(io, "I/O address of the Zoltrix Radio Plus (0x20c or 0x30c)");
module_param(radio_nr, int, 0);
static void __exit zoltrix_cleanup_module(void)
{ {
video_unregister_device(&zoltrix_radio); struct zoltrix *zol = &zoltrix_card;
release_region(io, 2);
video_unregister_device(&zol->vdev);
v4l2_device_unregister(&zol->v4l2_dev);
release_region(zol->io, 2);
} }
module_init(zoltrix_init); module_init(zoltrix_init);
module_exit(zoltrix_cleanup_module); module_exit(zoltrix_exit);