#include <linux/init.h> /* Initdata */
#include <linux/ioport.h> /* request_region */
#include <linux/delay.h> /* udelay */
-#include <asm/io.h> /* outb, outb_p */
-#include <asm/uaccess.h> /* copy to/from user */
#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 <linux/spinlock.h>
-#include <linux/version.h> /* for KERNEL_VERSION MACRO */
-#define RADIO_VERSION KERNEL_VERSION(0,0,2)
+MODULE_AUTHOR("R.OFFERMANNS & others");
+MODULE_DESCRIPTION("A driver for the TerraTec ActiveRadio Standalone radio card.");
+MODULE_LICENSE("GPL");
+
+#ifndef CONFIG_RADIO_TERRATEC_PORT
+#define CONFIG_RADIO_TERRATEC_PORT 0x590
+#endif
+
+static int io = CONFIG_RADIO_TERRATEC_PORT;
+static int radio_nr = -1;
+
+module_param(io, int, 0);
+MODULE_PARM_DESC(io, "I/O address of the TerraTec ActiveRadio card (0x590 or 0x591)");
+module_param(radio_nr, int, 0);
+
+#define RADIO_VERSION KERNEL_VERSION(0, 0, 2)
static struct v4l2_queryctrl radio_qctrl[] = {
{
}
};
-#ifndef CONFIG_RADIO_TERRATEC_PORT
-#define CONFIG_RADIO_TERRATEC_PORT 0x590
-#endif
-
-/**************** this ones are for the terratec *******************/
-#define BASEPORT 0x590
-#define VOLPORT 0x591
#define WRT_DIS 0x00
#define CLK_OFF 0x00
#define IIC_DATA 0x01
#define DATA 0x04
#define CLK_ON 0x08
#define WRT_EN 0x10
-/*******************************************************************/
-static int io = CONFIG_RADIO_TERRATEC_PORT;
-static int radio_nr = -1;
-static spinlock_t lock;
-
-struct tt_device
+struct terratec
{
- unsigned long in_use;
- int port;
+ struct v4l2_device v4l2_dev;
+ struct video_device vdev;
+ int io;
int curvol;
unsigned long curfreq;
int muted;
+ struct mutex lock;
};
+static struct terratec terratec_card;
/* local things */
-static void cardWriteVol(int volume)
+static void tt_write_vol(struct terratec *tt, int volume)
{
int i;
- volume = volume+(volume * 32); // change both channels
- spin_lock(&lock);
- for (i=0;i<8;i++)
- {
- if (volume & (0x80>>i))
- outb(0x80, VOLPORT);
- else outb(0x00, VOLPORT);
+
+ volume = volume + (volume * 32); /* change both channels */
+ mutex_lock(&tt->lock);
+ for (i = 0; i < 8; i++) {
+ if (volume & (0x80 >> i))
+ outb(0x80, tt->io + 1);
+ else
+ outb(0x00, tt->io + 1);
}
- spin_unlock(&lock);
+ mutex_unlock(&tt->lock);
}
-static void tt_mute(struct tt_device *dev)
+static void tt_mute(struct terratec *tt)
{
- dev->muted = 1;
- cardWriteVol(0);
+ tt->muted = 1;
+ tt_write_vol(tt, 0);
}
-static int tt_setvol(struct tt_device *dev, int vol)
+static int tt_setvol(struct terratec *tt, int vol)
{
-
-// printk(KERN_ERR "setvol called, vol = %d\n", vol);
-
- if(vol == dev->curvol) { /* requested volume = current */
- if (dev->muted) { /* user is unmuting the card */
- dev->muted = 0;
- cardWriteVol(vol); /* enable card */
+ if (vol == tt->curvol) { /* requested volume = current */
+ if (tt->muted) { /* user is unmuting the card */
+ tt->muted = 0;
+ tt_write_vol(tt, vol); /* enable card */
}
-
return 0;
}
- if(vol == 0) { /* volume = 0 means mute the card */
- cardWriteVol(0); /* "turn off card" by setting vol to 0 */
- dev->curvol = vol; /* track the volume state! */
+ if (vol == 0) { /* volume = 0 means mute the card */
+ tt_write_vol(tt, 0); /* "turn off card" by setting vol to 0 */
+ tt->curvol = vol; /* track the volume state! */
return 0;
}
- dev->muted = 0;
-
- cardWriteVol(vol);
-
- dev->curvol = vol;
-
+ tt->muted = 0;
+ tt_write_vol(tt, vol);
+ tt->curvol = vol;
return 0;
-
}
/* this is the worst part in this driver */
/* many more or less strange things are going on here, but hey, it works :) */
-static int tt_setfreq(struct tt_device *dev, unsigned long freq1)
+static int tt_setfreq(struct terratec *tt, unsigned long freq1)
{
int freq;
int i;
int p;
int temp;
long rest;
-
unsigned char buffer[25]; /* we have to bit shift 25 registers */
- freq = freq1/160; /* convert the freq. to a nice to handle value */
- for(i=24;i>-1;i--)
- buffer[i]=0;
- rest = freq*10+10700; /* i once had understood what is going on here */
+ mutex_lock(&tt->lock);
+
+ tt->curfreq = freq1;
+
+ freq = freq1 / 160; /* convert the freq. to a nice to handle value */
+ memset(buffer, 0, sizeof(buffer));
+
+ rest = freq * 10 + 10700; /* I once had understood what is going on here */
/* maybe some wise guy (friedhelm?) can comment this stuff */
- i=13;
- p=10;
- temp=102400;
- while (rest!=0)
- {
- if (rest%temp == rest)
+ i = 13;
+ p = 10;
+ temp = 102400;
+ while (rest != 0) {
+ if (rest % temp == rest)
buffer[i] = 0;
- else
- {
+ else {
buffer[i] = 1;
- rest = rest-temp;
+ rest = rest - temp;
}
i--;
p--;
- temp = temp/2;
+ temp = temp / 2;
}
- spin_lock(&lock);
-
- for (i=24;i>-1;i--) /* bit shift the values to the radiocard */
- {
- if (buffer[i]==1)
- {
- outb(WRT_EN|DATA, BASEPORT);
- outb(WRT_EN|DATA|CLK_ON , BASEPORT);
- outb(WRT_EN|DATA, BASEPORT);
- }
- else
- {
- outb(WRT_EN|0x00, BASEPORT);
- outb(WRT_EN|0x00|CLK_ON , BASEPORT);
+ for (i = 24; i > -1; i--) { /* bit shift the values to the radiocard */
+ if (buffer[i] == 1) {
+ outb(WRT_EN | DATA, tt->io);
+ outb(WRT_EN | DATA | CLK_ON, tt->io);
+ outb(WRT_EN | DATA, tt->io);
+ } else {
+ outb(WRT_EN | 0x00, tt->io);
+ outb(WRT_EN | 0x00 | CLK_ON, tt->io);
}
}
- outb(0x00, BASEPORT);
+ outb(0x00, tt->io);
- spin_unlock(&lock);
+ mutex_unlock(&tt->lock);
return 0;
}
-static int tt_getsigstr(struct tt_device *dev) /* TODO */
+static int tt_getsigstr(struct terratec *tt)
{
- if (inb(io) & 2) /* bit set = no signal present */
+ if (inb(tt->io) & 2) /* bit set = no signal present */
return 0;
return 1; /* signal present */
}
{
strlcpy(v->driver, "radio-terratec", sizeof(v->driver));
strlcpy(v->card, "ActiveRadio", sizeof(v->card));
- sprintf(v->bus_info, "ISA");
+ strlcpy(v->bus_info, "ISA", sizeof(v->bus_info));
v->version = RADIO_VERSION;
- v->capabilities = V4L2_CAP_TUNER;
+ v->capabilities = V4L2_CAP_TUNER | V4L2_CAP_RADIO;
return 0;
}
static int vidioc_g_tuner(struct file *file, void *priv,
struct v4l2_tuner *v)
{
- struct tt_device *tt = video_drvdata(file);
+ struct terratec *tt = video_drvdata(file);
if (v->index > 0)
return -EINVAL;
- strcpy(v->name, "FM");
+ strlcpy(v->name, "FM", sizeof(v->name));
v->type = V4L2_TUNER_RADIO;
- v->rangelow = (87*16000);
- v->rangehigh = (108*16000);
+ v->rangelow = 87 * 16000;
+ v->rangehigh = 108 * 16000;
v->rxsubchans = V4L2_TUNER_SUB_MONO;
v->capability = V4L2_TUNER_CAP_LOW;
v->audmode = V4L2_TUNER_MODE_MONO;
- v->signal = 0xFFFF*tt_getsigstr(tt);
+ v->signal = 0xFFFF * tt_getsigstr(tt);
return 0;
}
static int vidioc_s_tuner(struct file *file, void *priv,
struct v4l2_tuner *v)
{
- if (v->index > 0)
- return -EINVAL;
- return 0;
+ return v->index ? -EINVAL : 0;
}
static int vidioc_s_frequency(struct file *file, void *priv,
struct v4l2_frequency *f)
{
- struct tt_device *tt = video_drvdata(file);
+ struct terratec *tt = video_drvdata(file);
- tt->curfreq = f->frequency;
- tt_setfreq(tt, tt->curfreq);
+ tt_setfreq(tt, f->frequency);
return 0;
}
static int vidioc_g_frequency(struct file *file, void *priv,
struct v4l2_frequency *f)
{
- struct tt_device *tt = video_drvdata(file);
+ struct terratec *tt = video_drvdata(file);
f->type = V4L2_TUNER_RADIO;
f->frequency = tt->curfreq;
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));
+ memcpy(qc, &(radio_qctrl[i]), sizeof(*qc));
return 0;
}
}
static int vidioc_g_ctrl(struct file *file, void *priv,
struct v4l2_control *ctrl)
{
- struct tt_device *tt = video_drvdata(file);
+ struct terratec *tt = video_drvdata(file);
switch (ctrl->id) {
case V4L2_CID_AUDIO_MUTE:
static int vidioc_s_ctrl(struct file *file, void *priv,
struct v4l2_control *ctrl)
{
- struct tt_device *tt = video_drvdata(file);
+ struct terratec *tt = video_drvdata(file);
switch (ctrl->id) {
case V4L2_CID_AUDIO_MUTE:
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;
static int vidioc_s_input(struct file *filp, void *priv, unsigned int i)
{
- if (i != 0)
- return -EINVAL;
- return 0;
+ return i ? -EINVAL : 0;
}
-static int vidioc_s_audio(struct file *file, void *priv,
+static int vidioc_g_audio(struct file *file, void *priv,
struct v4l2_audio *a)
{
- if (a->index != 0)
- return -EINVAL;
+ a->index = 0;
+ strlcpy(a->name, "Radio", sizeof(a->name));
+ a->capability = V4L2_AUDCAP_STEREO;
return 0;
}
-static struct tt_device terratec_unit;
+static int vidioc_s_audio(struct file *file, void *priv,
+ struct v4l2_audio *a)
+{
+ return a->index ? -EINVAL : 0;
+}
-static int terratec_exclusive_open(struct file *file)
+static int terratec_open(struct file *file)
{
- return test_and_set_bit(0, &terratec_unit.in_use) ? -EBUSY : 0;
+ return 0;
}
-static int terratec_exclusive_release(struct file *file)
+static int terratec_release(struct file *file)
{
- clear_bit(0, &terratec_unit.in_use);
return 0;
}
static const struct v4l2_file_operations terratec_fops = {
.owner = THIS_MODULE,
- .open = terratec_exclusive_open,
- .release = terratec_exclusive_release,
+ .open = terratec_open,
+ .release = terratec_release,
.ioctl = video_ioctl2,
};
.vidioc_s_input = vidioc_s_input,
};
-static struct video_device terratec_radio = {
- .name = "TerraTec ActiveRadio",
- .fops = &terratec_fops,
- .ioctl_ops = &terratec_ioctl_ops,
- .release = video_device_release_empty,
-};
-
static int __init terratec_init(void)
{
- if(io==-1)
- {
- printk(KERN_ERR "You must set an I/O address with io=0x???\n");
+ struct terratec *tt = &terratec_card;
+ struct v4l2_device *v4l2_dev = &tt->v4l2_dev;
+ int res;
+
+ strlcpy(v4l2_dev->name, "terratec", sizeof(v4l2_dev->name));
+ tt->io = io;
+ if (tt->io == -1) {
+ v4l2_err(v4l2_dev, "you must set an I/O address with io=0x???\n");
return -EINVAL;
}
- if (!request_region(io, 2, "terratec"))
- {
- printk(KERN_ERR "TerraTec: port 0x%x already in use\n", io);
+ if (!request_region(tt->io, 2, "terratec")) {
+ v4l2_err(v4l2_dev, "port 0x%x already in use\n", io);
return -EBUSY;
}
- video_set_drvdata(&terratec_radio, &terratec_unit);
+ res = v4l2_device_register(NULL, v4l2_dev);
+ if (res < 0) {
+ release_region(tt->io, 2);
+ v4l2_err(v4l2_dev, "Could not register v4l2_device\n");
+ return res;
+ }
+
+ strlcpy(tt->vdev.name, v4l2_dev->name, sizeof(tt->vdev.name));
+ tt->vdev.v4l2_dev = v4l2_dev;
+ tt->vdev.fops = &terratec_fops;
+ tt->vdev.ioctl_ops = &terratec_ioctl_ops;
+ tt->vdev.release = video_device_release_empty;
+ video_set_drvdata(&tt->vdev, tt);
- spin_lock_init(&lock);
+ mutex_init(&tt->lock);
- if (video_register_device(&terratec_radio, VFL_TYPE_RADIO, radio_nr) < 0) {
- release_region(io,2);
+ if (video_register_device(&tt->vdev, VFL_TYPE_RADIO, radio_nr) < 0) {
+ v4l2_device_unregister(&tt->v4l2_dev);
+ release_region(tt->io, 2);
return -EINVAL;
}
- printk(KERN_INFO "TERRATEC ActivRadio Standalone card driver.\n");
+ v4l2_info(v4l2_dev, "TERRATEC ActivRadio Standalone card driver.\n");
/* mute card - prevents noisy bootups */
-
- /* this ensures that the volume is all the way down */
- cardWriteVol(0);
- terratec_unit.curvol = 0;
-
+ tt_write_vol(tt, 0);
return 0;
}
-MODULE_AUTHOR("R.OFFERMANNS & others");
-MODULE_DESCRIPTION("A driver for the TerraTec ActiveRadio Standalone radio card.");
-MODULE_LICENSE("GPL");
-module_param(io, int, 0);
-MODULE_PARM_DESC(io, "I/O address of the TerraTec ActiveRadio card (0x590 or 0x591)");
-module_param(radio_nr, int, 0);
-
-static void __exit terratec_cleanup_module(void)
+static void __exit terratec_exit(void)
{
- video_unregister_device(&terratec_radio);
- release_region(io,2);
- printk(KERN_INFO "TERRATEC ActivRadio Standalone card driver unloaded.\n");
+ struct terratec *tt = &terratec_card;
+ struct v4l2_device *v4l2_dev = &tt->v4l2_dev;
+
+ video_unregister_device(&tt->vdev);
+ v4l2_device_unregister(&tt->v4l2_dev);
+ release_region(tt->io, 2);
+ v4l2_info(v4l2_dev, "TERRATEC ActivRadio Standalone card driver unloaded.\n");
}
module_init(terratec_init);
-module_exit(terratec_cleanup_module);
+module_exit(terratec_exit);
projects / GitHub / exynos8895 / android_kernel_samsung_universal8895.git / commitdiff