#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/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/version.h> /* for KERNEL_VERSION MACRO */
-#define RADIO_VERSION KERNEL_VERSION(0,0,2)
+MODULE_AUTHOR("M.Kirkwood");
+MODULE_DESCRIPTION("A driver for the RadioTrack/RadioReveal radio card.");
+MODULE_LICENSE("GPL");
#ifndef CONFIG_RADIO_RTRACK_PORT
#define CONFIG_RADIO_RTRACK_PORT -1
static int io = CONFIG_RADIO_RTRACK_PORT;
static int radio_nr = -1;
-static struct mutex lock;
-struct rt_device
+module_param(io, int, 0);
+MODULE_PARM_DESC(io, "I/O address of the RadioTrack card (0x20f or 0x30f)");
+module_param(radio_nr, int, 0);
+
+#define RADIO_VERSION KERNEL_VERSION(0, 0, 2)
+
+struct rtrack
{
- unsigned long in_use;
+ struct v4l2_device v4l2_dev;
+ struct video_device vdev;
int port;
int curvol;
unsigned long curfreq;
int muted;
+ int io;
+ struct mutex lock;
};
+static struct rtrack rtrack_card;
/* local things */
static void sleep_delay(long n)
{
/* Sleep nicely for 'n' uS */
- int d=n/msecs_to_jiffies(1000);
- if(!d)
+ int d = n / msecs_to_jiffies(1000);
+ if (!d)
udelay(n);
else
msleep(jiffies_to_msecs(d));
}
-static void rt_decvol(void)
+static void rt_decvol(struct rtrack *rt)
{
- outb(0x58, io); /* volume down + sigstr + on */
+ outb(0x58, rt->io); /* volume down + sigstr + on */
sleep_delay(100000);
- outb(0xd8, io); /* volume steady + sigstr + on */
+ outb(0xd8, rt->io); /* volume steady + sigstr + on */
}
-static void rt_incvol(void)
+static void rt_incvol(struct rtrack *rt)
{
- outb(0x98, io); /* volume up + sigstr + on */
+ outb(0x98, rt->io); /* volume up + sigstr + on */
sleep_delay(100000);
- outb(0xd8, io); /* volume steady + sigstr + on */
+ outb(0xd8, rt->io); /* volume steady + sigstr + on */
}
-static void rt_mute(struct rt_device *dev)
+static void rt_mute(struct rtrack *rt)
{
- dev->muted = 1;
- mutex_lock(&lock);
- outb(0xd0, io); /* volume steady, off */
- mutex_unlock(&lock);
+ rt->muted = 1;
+ mutex_lock(&rt->lock);
+ outb(0xd0, rt->io); /* volume steady, off */
+ mutex_unlock(&rt->lock);
}
-static int rt_setvol(struct rt_device *dev, int vol)
+static int rt_setvol(struct rtrack *rt, int vol)
{
int i;
- mutex_lock(&lock);
+ mutex_lock(&rt->lock);
- if(vol == dev->curvol) { /* requested volume = current */
- if (dev->muted) { /* user is unmuting the card */
- dev->muted = 0;
- outb (0xd8, io); /* enable card */
+ if (vol == rt->curvol) { /* requested volume = current */
+ if (rt->muted) { /* user is unmuting the card */
+ rt->muted = 0;
+ outb(0xd8, rt->io); /* enable card */
}
- mutex_unlock(&lock);
+ mutex_unlock(&rt->lock);
return 0;
}
- if(vol == 0) { /* volume = 0 means mute the card */
- outb(0x48, io); /* volume down but still "on" */
+ if (vol == 0) { /* volume = 0 means mute the card */
+ outb(0x48, rt->io); /* volume down but still "on" */
sleep_delay(2000000); /* make sure it's totally down */
- outb(0xd0, io); /* volume steady, off */
- dev->curvol = 0; /* track the volume state! */
- mutex_unlock(&lock);
+ outb(0xd0, rt->io); /* volume steady, off */
+ rt->curvol = 0; /* track the volume state! */
+ mutex_unlock(&rt->lock);
return 0;
}
- dev->muted = 0;
- if(vol > dev->curvol)
- for(i = dev->curvol; i < vol; i++)
- rt_incvol();
+ rt->muted = 0;
+ if (vol > rt->curvol)
+ for (i = rt->curvol; i < vol; i++)
+ rt_incvol(rt);
else
- for(i = dev->curvol; i > vol; i--)
- rt_decvol();
+ for (i = rt->curvol; i > vol; i--)
+ rt_decvol(rt);
- dev->curvol = vol;
- mutex_unlock(&lock);
+ rt->curvol = vol;
+ mutex_unlock(&rt->lock);
return 0;
}
* and bit 4 (+16) is to keep the signal strength meter enabled
*/
-static void send_0_byte(int port, struct rt_device *dev)
+static void send_0_byte(struct rtrack *rt)
{
- if ((dev->curvol == 0) || (dev->muted)) {
- outb_p(128+64+16+ 1, port); /* wr-enable + data low */
- outb_p(128+64+16+2+1, port); /* clock */
+ if (rt->curvol == 0 || rt->muted) {
+ outb_p(128+64+16+ 1, rt->io); /* wr-enable + data low */
+ outb_p(128+64+16+2+1, rt->io); /* clock */
}
else {
- outb_p(128+64+16+8+ 1, port); /* on + wr-enable + data low */
- outb_p(128+64+16+8+2+1, port); /* clock */
+ outb_p(128+64+16+8+ 1, rt->io); /* on + wr-enable + data low */
+ outb_p(128+64+16+8+2+1, rt->io); /* clock */
}
sleep_delay(1000);
}
-static void send_1_byte(int port, struct rt_device *dev)
+static void send_1_byte(struct rtrack *rt)
{
- if ((dev->curvol == 0) || (dev->muted)) {
- outb_p(128+64+16+4 +1, port); /* wr-enable+data high */
- outb_p(128+64+16+4+2+1, port); /* clock */
+ if (rt->curvol == 0 || rt->muted) {
+ outb_p(128+64+16+4 +1, rt->io); /* wr-enable+data high */
+ outb_p(128+64+16+4+2+1, rt->io); /* clock */
}
else {
- outb_p(128+64+16+8+4 +1, port); /* on+wr-enable+data high */
- outb_p(128+64+16+8+4+2+1, port); /* clock */
+ outb_p(128+64+16+8+4 +1, rt->io); /* on+wr-enable+data high */
+ outb_p(128+64+16+8+4+2+1, rt->io); /* clock */
}
sleep_delay(1000);
}
-static int rt_setfreq(struct rt_device *dev, unsigned long freq)
+static int rt_setfreq(struct rtrack *rt, unsigned long freq)
{
int i;
- /* adapted from radio-aztech.c */
+ mutex_lock(&rt->lock); /* Stop other ops interfering */
+
+ rt->curfreq = freq;
/* now uses VIDEO_TUNER_LOW for fine tuning */
freq += 171200; /* Add 10.7 MHz IF */
freq /= 800; /* Convert to 50 kHz units */
- mutex_lock(&lock); /* Stop other ops interfering */
-
- send_0_byte (io, dev); /* 0: LSB of frequency */
+ send_0_byte(rt); /* 0: LSB of frequency */
for (i = 0; i < 13; i++) /* : frequency bits (1-13) */
if (freq & (1 << i))
- send_1_byte (io, dev);
+ send_1_byte(rt);
else
- send_0_byte (io, dev);
+ send_0_byte(rt);
- send_0_byte (io, dev); /* 14: test bit - always 0 */
- send_0_byte (io, dev); /* 15: test bit - always 0 */
+ send_0_byte(rt); /* 14: test bit - always 0 */
+ send_0_byte(rt); /* 15: test bit - always 0 */
- send_0_byte (io, dev); /* 16: band data 0 - always 0 */
- send_0_byte (io, dev); /* 17: band data 1 - always 0 */
- send_0_byte (io, dev); /* 18: band data 2 - always 0 */
- send_0_byte (io, dev); /* 19: time base - always 0 */
+ send_0_byte(rt); /* 16: band data 0 - always 0 */
+ send_0_byte(rt); /* 17: band data 1 - always 0 */
+ send_0_byte(rt); /* 18: band data 2 - always 0 */
+ send_0_byte(rt); /* 19: time base - always 0 */
- send_0_byte (io, dev); /* 20: spacing (0 = 25 kHz) */
- send_1_byte (io, dev); /* 21: spacing (1 = 25 kHz) */
- send_0_byte (io, dev); /* 22: spacing (0 = 25 kHz) */
- send_1_byte (io, dev); /* 23: AM/FM (FM = 1, always) */
+ send_0_byte(rt); /* 20: spacing (0 = 25 kHz) */
+ send_1_byte(rt); /* 21: spacing (1 = 25 kHz) */
+ send_0_byte(rt); /* 22: spacing (0 = 25 kHz) */
+ send_1_byte(rt); /* 23: AM/FM (FM = 1, always) */
- if ((dev->curvol == 0) || (dev->muted))
- outb (0xd0, io); /* volume steady + sigstr */
+ if (rt->curvol == 0 || rt->muted)
+ outb(0xd0, rt->io); /* volume steady + sigstr */
else
- outb (0xd8, io); /* volume steady + sigstr + on */
+ outb(0xd8, rt->io); /* volume steady + sigstr + on */
- mutex_unlock(&lock);
+ mutex_unlock(&rt->lock);
return 0;
}
-static int rt_getsigstr(struct rt_device *dev)
+static int rt_getsigstr(struct rtrack *rt)
{
- if (inb(io) & 2) /* bit set = no signal present */
- return 0;
- return 1; /* signal present */
-}
+ int sig = 1;
-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 = 0xff,
- .step = 1,
- .default_value = 0xff,
- .type = V4L2_CTRL_TYPE_INTEGER,
- }
-};
+ mutex_lock(&rt->lock);
+ if (inb(rt->io) & 2) /* bit set = no signal present */
+ sig = 0;
+ mutex_unlock(&rt->lock);
+ return sig;
+}
static int vidioc_querycap(struct file *file, void *priv,
struct v4l2_capability *v)
{
strlcpy(v->driver, "radio-aimslab", sizeof(v->driver));
strlcpy(v->card, "RadioTrack", 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 rt_device *rt = video_drvdata(file);
+ struct rtrack *rt = 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*rt_getsigstr(rt);
+ v->signal = 0xffff * rt_getsigstr(rt);
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 rt_device *rt = video_drvdata(file);
+ struct rtrack *rt = video_drvdata(file);
- rt->curfreq = f->frequency;
- rt_setfreq(rt, rt->curfreq);
+ rt_setfreq(rt, f->frequency);
return 0;
}
static int vidioc_g_frequency(struct file *file, void *priv,
struct v4l2_frequency *f)
{
- struct rt_device *rt = video_drvdata(file);
+ struct rtrack *rt = video_drvdata(file);
f->type = V4L2_TUNER_RADIO;
f->frequency = rt->curfreq;
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;
- }
+ switch (qc->id) {
+ case V4L2_CID_AUDIO_MUTE:
+ return v4l2_ctrl_query_fill(qc, 0, 1, 1, 1);
+ case V4L2_CID_AUDIO_VOLUME:
+ return v4l2_ctrl_query_fill(qc, 0, 0xff, 1, 0xff);
}
return -EINVAL;
}
static int vidioc_g_ctrl(struct file *file, void *priv,
struct v4l2_control *ctrl)
{
- struct rt_device *rt = video_drvdata(file);
+ struct rtrack *rt = video_drvdata(file);
switch (ctrl->id) {
case V4L2_CID_AUDIO_MUTE:
ctrl->value = rt->muted;
return 0;
case V4L2_CID_AUDIO_VOLUME:
- ctrl->value = rt->curvol * 6554;
+ ctrl->value = rt->curvol;
return 0;
}
return -EINVAL;
static int vidioc_s_ctrl(struct file *file, void *priv,
struct v4l2_control *ctrl)
{
- struct rt_device *rt = video_drvdata(file);
+ struct rtrack *rt = video_drvdata(file);
switch (ctrl->id) {
case V4L2_CID_AUDIO_MUTE:
if (ctrl->value)
rt_mute(rt);
else
- rt_setvol(rt,rt->curvol);
+ rt_setvol(rt, rt->curvol);
return 0;
case V4L2_CID_AUDIO_VOLUME:
- rt_setvol(rt,ctrl->value);
+ rt_setvol(rt, ctrl->value);
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;
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 rt_device rtrack_unit;
+static int vidioc_s_audio(struct file *file, void *priv,
+ struct v4l2_audio *a)
+{
+ return a->index ? -EINVAL : 0;
+}
-static int rtrack_exclusive_open(struct file *file)
+static int rtrack_open(struct file *file)
{
- return test_and_set_bit(0, &rtrack_unit.in_use) ? -EBUSY : 0;
+ return 0;
}
-static int rtrack_exclusive_release(struct file *file)
+static int rtrack_release(struct file *file)
{
- clear_bit(0, &rtrack_unit.in_use);
return 0;
}
static const struct v4l2_file_operations rtrack_fops = {
.owner = THIS_MODULE,
- .open = rtrack_exclusive_open,
- .release = rtrack_exclusive_release,
+ .open = rtrack_open,
+ .release = rtrack_release,
.ioctl = video_ioctl2,
};
.vidioc_s_ctrl = vidioc_s_ctrl,
};
-static struct video_device rtrack_radio = {
- .name = "RadioTrack radio",
- .fops = &rtrack_fops,
- .ioctl_ops = &rtrack_ioctl_ops,
- .release = video_device_release_empty,
-};
-
static int __init rtrack_init(void)
{
- if(io==-1)
- {
- printk(KERN_ERR "You must set an I/O address with io=0x???\n");
+ struct rtrack *rt = &rtrack_card;
+ struct v4l2_device *v4l2_dev = &rt->v4l2_dev;
+ int res;
+
+ strlcpy(v4l2_dev->name, "rtrack", sizeof(v4l2_dev->name));
+ rt->io = io;
+
+ if (rt->io == -1) {
+ v4l2_err(v4l2_dev, "you must set an I/O address with io=0x???\n");
return -EINVAL;
}
- if (!request_region(io, 2, "rtrack"))
- {
- printk(KERN_ERR "rtrack: port 0x%x already in use\n", io);
+ if (!request_region(rt->io, 2, "rtrack")) {
+ v4l2_err(v4l2_dev, "port 0x%x already in use\n", rt->io);
return -EBUSY;
}
- video_set_drvdata(&rtrack_radio, &rtrack_unit);
+ res = v4l2_device_register(NULL, v4l2_dev);
+ if (res < 0) {
+ release_region(rt->io, 2);
+ v4l2_err(v4l2_dev, "could not register v4l2_device\n");
+ return res;
+ }
- if (video_register_device(&rtrack_radio, VFL_TYPE_RADIO, radio_nr) < 0) {
- release_region(io, 2);
+ strlcpy(rt->vdev.name, v4l2_dev->name, sizeof(rt->vdev.name));
+ rt->vdev.v4l2_dev = v4l2_dev;
+ rt->vdev.fops = &rtrack_fops;
+ rt->vdev.ioctl_ops = &rtrack_ioctl_ops;
+ rt->vdev.release = video_device_release_empty;
+ video_set_drvdata(&rt->vdev, rt);
+
+ if (video_register_device(&rt->vdev, VFL_TYPE_RADIO, radio_nr) < 0) {
+ v4l2_device_unregister(&rt->v4l2_dev);
+ release_region(rt->io, 2);
return -EINVAL;
}
- printk(KERN_INFO "AIMSlab RadioTrack/RadioReveal card driver.\n");
+ v4l2_info(v4l2_dev, "AIMSlab RadioTrack/RadioReveal card driver.\n");
/* Set up the I/O locking */
- mutex_init(&lock);
+ mutex_init(&rt->lock);
/* mute card - prevents noisy bootups */
/* this ensures that the volume is all the way down */
- outb(0x48, io); /* volume down but still "on" */
+ outb(0x48, rt->io); /* volume down but still "on" */
sleep_delay(2000000); /* make sure it's totally down */
- outb(0xc0, io); /* steady volume, mute card */
- rtrack_unit.curvol = 0;
+ outb(0xc0, rt->io); /* steady volume, mute card */
return 0;
}
-MODULE_AUTHOR("M.Kirkwood");
-MODULE_DESCRIPTION("A driver for the RadioTrack/RadioReveal radio card.");
-MODULE_LICENSE("GPL");
-
-module_param(io, int, 0);
-MODULE_PARM_DESC(io, "I/O address of the RadioTrack card (0x20f or 0x30f)");
-module_param(radio_nr, int, 0);
-
-static void __exit cleanup_rtrack_module(void)
+static void __exit rtrack_exit(void)
{
- video_unregister_device(&rtrack_radio);
- release_region(io,2);
+ struct rtrack *rt = &rtrack_card;
+
+ video_unregister_device(&rt->vdev);
+ v4l2_device_unregister(&rt->v4l2_dev);
+ release_region(rt->io, 2);
}
module_init(rtrack_init);
-module_exit(cleanup_rtrack_module);
+module_exit(rtrack_exit);
projects / GitHub / exynos8895 / android_kernel_samsung_universal8895.git / commitdiff