#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 <media/v4l2-ioctl.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>
-static struct mutex lock;
+MODULE_AUTHOR("Ziglio Frediano, freddy77@angelfire.com");
+MODULE_DESCRIPTION("A driver for the SF16FMR2 radio.");
+MODULE_LICENSE("GPL");
+
+static int io = 0x384;
+static int radio_nr = -1;
+
+module_param(io, int, 0);
+MODULE_PARM_DESC(io, "I/O address of the SF16FMR2 card (should be 0x384, if do not work try 0x284)");
+module_param(radio_nr, int, 0);
-#include <linux/version.h> /* for KERNEL_VERSION MACRO */
#define RADIO_VERSION KERNEL_VERSION(0,0,2)
#define AUD_VOL_INDEX 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,
- },
- [AUD_VOL_INDEX] = {
- .id = V4L2_CID_AUDIO_VOLUME,
- .name = "Volume",
- .minimum = 0,
- .maximum = 15,
- .step = 1,
- .default_value = 0,
- .type = V4L2_CTRL_TYPE_INTEGER,
- }
-};
-
#undef DEBUG
//#define DEBUG 1
#endif
/* this should be static vars for module size */
-struct fmr2_device
+struct fmr2
{
- unsigned long in_use;
- int port;
+ struct v4l2_device v4l2_dev;
+ struct video_device vdev;
+ struct mutex lock;
+ int io;
int curvol; /* 0-15 */
int mute;
int stereo; /* card is producing stereo audio */
unsigned long curfreq; /* freq in kHz */
int card_type;
- __u32 flags;
+ u32 flags;
};
-static int io = 0x384;
-static int radio_nr = -1;
+static struct fmr2 fmr2_card;
/* hw precision is 12.5 kHz
* It is only useful to give freq in intervall of 200 (=0.0125Mhz),
* other bits will be truncated
*/
-#define RSF16_ENCODE(x) ((x)/200+856)
-#define RSF16_MINFREQ 87*16000
-#define RSF16_MAXFREQ 108*16000
+#define RSF16_ENCODE(x) ((x) / 200 + 856)
+#define RSF16_MINFREQ (87 * 16000)
+#define RSF16_MAXFREQ (108 * 16000)
-static inline void wait(int n,int port)
+static inline void wait(int n, int io)
{
- for (;n;--n) inb(port);
+ for (; n; --n)
+ inb(io);
}
-static void outbits(int bits, unsigned int data, int nWait, int port)
+static void outbits(int bits, unsigned int data, int nWait, int io)
{
int bit;
- for(;--bits>=0;) {
- bit = (data>>bits) & 1;
- outb(bit,port);
- wait(nWait,port);
- outb(bit|2,port);
- wait(nWait,port);
- outb(bit,port);
- wait(nWait,port);
+
+ for (; --bits >= 0;) {
+ bit = (data >> bits) & 1;
+ outb(bit, io);
+ wait(nWait, io);
+ outb(bit | 2, io);
+ wait(nWait, io);
+ outb(bit, io);
+ wait(nWait, io);
}
}
-static inline void fmr2_mute(int port)
+static inline void fmr2_mute(int io)
{
- outb(0x00, port);
- wait(4,port);
+ outb(0x00, io);
+ wait(4, io);
}
-static inline void fmr2_unmute(int port)
+static inline void fmr2_unmute(int io)
{
- outb(0x04, port);
- wait(4,port);
+ outb(0x04, io);
+ wait(4, io);
}
-static inline int fmr2_stereo_mode(int port)
+static inline int fmr2_stereo_mode(int io)
{
- int n = inb(port);
- outb(6,port);
- inb(port);
- n = ((n>>3)&1)^1;
+ int n = inb(io);
+
+ outb(6, io);
+ inb(io);
+ n = ((n >> 3) & 1) ^ 1;
debug_print((KERN_DEBUG "stereo: %d\n", n));
return n;
}
-static int fmr2_product_info(struct fmr2_device *dev)
+static int fmr2_product_info(struct fmr2 *dev)
{
- int n = inb(dev->port);
+ int n = inb(dev->io);
+
n &= 0xC1;
- if (n == 0)
- {
+ if (n == 0) {
/* this should support volume set */
dev->card_type = 12;
return 0;
}
/* not volume (mine is 11) */
- dev->card_type = (n==128)?11:0;
+ dev->card_type = (n == 128) ? 11 : 0;
return n;
}
-static inline int fmr2_getsigstr(struct fmr2_device *dev)
+static inline int fmr2_getsigstr(struct fmr2 *dev)
{
- /* !!! work only if scanning freq */
- int port = dev->port, res = 0xffff;
- outb(5,port);
- wait(4,port);
- if (!(inb(port)&1)) res = 0;
+ /* !!! works only if scanning freq */
+ int res = 0xffff;
+
+ outb(5, dev->io);
+ wait(4, dev->io);
+ if (!(inb(dev->io) & 1))
+ res = 0;
debug_print((KERN_DEBUG "signal: %d\n", res));
return res;
}
/* set frequency and unmute card */
-static int fmr2_setfreq(struct fmr2_device *dev)
+static int fmr2_setfreq(struct fmr2 *dev)
{
- int port = dev->port;
unsigned long freq = dev->curfreq;
- fmr2_mute(port);
+ fmr2_mute(dev->io);
/* 0x42 for mono output
* 0x102 forward scanning
* 0x182 scansione avanti
*/
- outbits(9,0x2,3,port);
- outbits(16,RSF16_ENCODE(freq),2,port);
+ outbits(9, 0x2, 3, dev->io);
+ outbits(16, RSF16_ENCODE(freq), 2, dev->io);
- fmr2_unmute(port);
+ fmr2_unmute(dev->io);
/* wait 0.11 sec */
msleep(110);
/* NOTE if mute this stop radio
you must set freq on unmute */
- dev->stereo = fmr2_stereo_mode(port);
+ dev->stereo = fmr2_stereo_mode(dev->io);
return 0;
}
/* !!! not tested, in my card this does't work !!! */
-static int fmr2_setvolume(struct fmr2_device *dev)
+static int fmr2_setvolume(struct fmr2 *dev)
{
int vol[16] = { 0x021, 0x084, 0x090, 0x104,
0x110, 0x204, 0x210, 0x402,
0x404, 0x408, 0x410, 0x801,
0x802, 0x804, 0x808, 0x810 };
- int i, a, port = dev->port;
+ int i, a;
int n = vol[dev->curvol & 0x0f];
if (dev->card_type != 11)
return 1;
for (i = 12; --i >= 0; ) {
- a = ((n >> i) & 1) << 6; /* if (a=0) a= 0; else a= 0x40; */
- outb(a | 4, port);
- wait(4, port);
- outb(a | 0x24, port);
- wait(4, port);
- outb(a | 4, port);
- wait(4, port);
+ a = ((n >> i) & 1) << 6; /* if (a==0) a = 0; else a = 0x40; */
+ outb(a | 4, dev->io);
+ wait(4, dev->io);
+ outb(a | 0x24, dev->io);
+ wait(4, dev->io);
+ outb(a | 4, dev->io);
+ wait(4, dev->io);
}
for (i = 6; --i >= 0; ) {
a = ((0x18 >> i) & 1) << 6;
- outb(a | 4, port);
- wait(4,port);
- outb(a | 0x24, port);
- wait(4,port);
- outb(a|4, port);
- wait(4,port);
+ outb(a | 4, dev->io);
+ wait(4, dev->io);
+ outb(a | 0x24, dev->io);
+ wait(4, dev->io);
+ outb(a | 4, dev->io);
+ wait(4, dev->io);
}
- wait(4, port);
- outb(0x14, port);
-
+ wait(4, dev->io);
+ outb(0x14, dev->io);
return 0;
}
{
strlcpy(v->driver, "radio-sf16fmr2", sizeof(v->driver));
strlcpy(v->card, "SF16-FMR2 radio", 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;
}
struct v4l2_tuner *v)
{
int mult;
- struct fmr2_device *fmr2 = video_drvdata(file);
+ struct fmr2 *fmr2 = 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;
mult = (fmr2->flags & V4L2_TUNER_CAP_LOW) ? 1 : 1000;
- v->rangelow = RSF16_MINFREQ/mult;
- v->rangehigh = RSF16_MAXFREQ/mult;
+ v->rangelow = RSF16_MINFREQ / mult;
+ v->rangehigh = RSF16_MAXFREQ / mult;
v->rxsubchans = V4L2_TUNER_SUB_MONO | V4L2_TUNER_MODE_STEREO;
v->capability = fmr2->flags&V4L2_TUNER_CAP_LOW;
v->audmode = fmr2->stereo ? V4L2_TUNER_MODE_STEREO:
V4L2_TUNER_MODE_MONO;
- mutex_lock(&lock);
+ mutex_lock(&fmr2->lock);
v->signal = fmr2_getsigstr(fmr2);
- mutex_unlock(&lock);
+ mutex_unlock(&fmr2->lock);
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 fmr2_device *fmr2 = video_drvdata(file);
+ struct fmr2 *fmr2 = video_drvdata(file);
if (!(fmr2->flags & V4L2_TUNER_CAP_LOW))
f->frequency *= 1000;
if (f->frequency < RSF16_MINFREQ ||
- f->frequency > RSF16_MAXFREQ )
+ f->frequency > RSF16_MAXFREQ)
return -EINVAL;
- /*rounding in steps of 200 to match th freq
- that will be used */
- fmr2->curfreq = (f->frequency/200)*200;
+ /* rounding in steps of 200 to match the freq
+ that will be used */
+ fmr2->curfreq = (f->frequency / 200) * 200;
/* set card freq (if not muted) */
if (fmr2->curvol && !fmr2->mute) {
- mutex_lock(&lock);
+ mutex_lock(&fmr2->lock);
fmr2_setfreq(fmr2);
- mutex_unlock(&lock);
+ mutex_unlock(&fmr2->lock);
}
return 0;
}
static int vidioc_g_frequency(struct file *file, void *priv,
struct v4l2_frequency *f)
{
- struct fmr2_device *fmr2 = video_drvdata(file);
+ struct fmr2 *fmr2 = video_drvdata(file);
f->type = V4L2_TUNER_RADIO;
f->frequency = fmr2->curfreq;
static int vidioc_queryctrl(struct file *file, void *priv,
struct v4l2_queryctrl *qc)
{
- int i;
+ struct fmr2 *fmr2 = video_drvdata(file);
- 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:
+ /* Only card_type == 11 implements volume */
+ if (fmr2->card_type == 11)
+ return v4l2_ctrl_query_fill(qc, 0, 15, 1, 0);
+ return v4l2_ctrl_query_fill(qc, 0, 1, 1, 0);
}
return -EINVAL;
}
static int vidioc_g_ctrl(struct file *file, void *priv,
struct v4l2_control *ctrl)
{
- struct fmr2_device *fmr2 = video_drvdata(file);
+ struct fmr2 *fmr2 = 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 fmr2_device *fmr2 = video_drvdata(file);
+ struct fmr2 *fmr2 = video_drvdata(file);
switch (ctrl->id) {
case V4L2_CID_AUDIO_MUTE:
fmr2->mute = ctrl->value;
break;
case V4L2_CID_AUDIO_VOLUME:
- if (ctrl->value > radio_qctrl[AUD_VOL_INDEX].maximum)
- fmr2->curvol = radio_qctrl[AUD_VOL_INDEX].maximum;
- else
- fmr2->curvol = ctrl->value;
-
+ fmr2->curvol = ctrl->value;
break;
default:
return -EINVAL;
printk(KERN_DEBUG "mute\n");
#endif
- mutex_lock(&lock);
+ mutex_lock(&fmr2->lock);
if (fmr2->curvol && !fmr2->mute) {
fmr2_setvolume(fmr2);
/* Set frequency and unmute card */
fmr2_setfreq(fmr2);
} else
- fmr2_mute(fmr2->port);
- mutex_unlock(&lock);
- return 0;
-}
-
-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;
+ fmr2_mute(fmr2->io);
+ mutex_unlock(&fmr2->lock);
return 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 fmr2_device fmr2_unit;
+static int vidioc_s_audio(struct file *file, void *priv,
+ struct v4l2_audio *a)
+{
+ return a->index ? -EINVAL : 0;
+}
-static int fmr2_exclusive_open(struct file *file)
+static int fmr2_open(struct file *file)
{
- return test_and_set_bit(0, &fmr2_unit.in_use) ? -EBUSY : 0;
+ return 0;
}
-static int fmr2_exclusive_release(struct file *file)
+static int fmr2_release(struct file *file)
{
- clear_bit(0, &fmr2_unit.in_use);
return 0;
}
static const struct v4l2_file_operations fmr2_fops = {
.owner = THIS_MODULE,
- .open = fmr2_exclusive_open,
- .release = fmr2_exclusive_release,
+ .open = fmr2_open,
+ .release = fmr2_release,
.ioctl = video_ioctl2,
};
.vidioc_s_ctrl = vidioc_s_ctrl,
};
-static struct video_device fmr2_radio = {
- .name = "SF16FMR2 radio",
- .fops = &fmr2_fops,
- .ioctl_ops = &fmr2_ioctl_ops,
- .release = video_device_release_empty,
-};
-
static int __init fmr2_init(void)
{
- fmr2_unit.port = io;
- fmr2_unit.curvol = 0;
- fmr2_unit.mute = 0;
- fmr2_unit.curfreq = 0;
- fmr2_unit.stereo = 1;
- fmr2_unit.flags = V4L2_TUNER_CAP_LOW;
- fmr2_unit.card_type = 0;
- video_set_drvdata(&fmr2_radio, &fmr2_unit);
-
- mutex_init(&lock);
-
- if (!request_region(io, 2, "sf16fmr2")) {
- printk(KERN_ERR "radio-sf16fmr2: request_region failed!\n");
+ struct fmr2 *fmr2 = &fmr2_card;
+ struct v4l2_device *v4l2_dev = &fmr2->v4l2_dev;
+ int res;
+
+ strlcpy(v4l2_dev->name, "sf16fmr2", sizeof(v4l2_dev->name));
+ fmr2->io = io;
+ fmr2->stereo = 1;
+ fmr2->flags = V4L2_TUNER_CAP_LOW;
+ mutex_init(&fmr2->lock);
+
+ if (!request_region(fmr2->io, 2, "sf16fmr2")) {
+ v4l2_err(v4l2_dev, "request_region failed!\n");
return -EBUSY;
}
- if (video_register_device(&fmr2_radio, VFL_TYPE_RADIO, radio_nr) < 0) {
- release_region(io, 2);
- return -EINVAL;
+ res = v4l2_device_register(NULL, v4l2_dev);
+ if (res < 0) {
+ release_region(fmr2->io, 2);
+ v4l2_err(v4l2_dev, "Could not register v4l2_device\n");
+ return res;
}
- printk(KERN_INFO "SF16FMR2 radio card driver at 0x%x.\n", io);
- /* mute card - prevents noisy bootups */
- mutex_lock(&lock);
- fmr2_mute(io);
- fmr2_product_info(&fmr2_unit);
- mutex_unlock(&lock);
- debug_print((KERN_DEBUG "card_type %d\n", fmr2_unit.card_type));
+ strlcpy(fmr2->vdev.name, v4l2_dev->name, sizeof(fmr2->vdev.name));
+ fmr2->vdev.v4l2_dev = v4l2_dev;
+ fmr2->vdev.fops = &fmr2_fops;
+ fmr2->vdev.ioctl_ops = &fmr2_ioctl_ops;
+ fmr2->vdev.release = video_device_release_empty;
+ video_set_drvdata(&fmr2->vdev, fmr2);
- /* Only card_type == 11 implements volume */
- if (fmr2_unit.card_type != 11)
- radio_qctrl[AUD_VOL_INDEX].maximum = 1;
+ if (video_register_device(&fmr2->vdev, VFL_TYPE_RADIO, radio_nr) < 0) {
+ v4l2_device_unregister(v4l2_dev);
+ release_region(fmr2->io, 2);
+ return -EINVAL;
+ }
+ v4l2_info(v4l2_dev, "SF16FMR2 radio card driver at 0x%x.\n", fmr2->io);
+ /* mute card - prevents noisy bootups */
+ mutex_lock(&fmr2->lock);
+ fmr2_mute(fmr2->io);
+ fmr2_product_info(fmr2);
+ mutex_unlock(&fmr2->lock);
+ debug_print((KERN_DEBUG "card_type %d\n", fmr2->card_type));
return 0;
}
-MODULE_AUTHOR("Ziglio Frediano, freddy77@angelfire.com");
-MODULE_DESCRIPTION("A driver for the SF16FMR2 radio.");
-MODULE_LICENSE("GPL");
-
-module_param(io, int, 0);
-MODULE_PARM_DESC(io, "I/O address of the SF16FMR2 card (should be 0x384, if do not work try 0x284)");
-module_param(radio_nr, int, 0);
-
-static void __exit fmr2_cleanup_module(void)
+static void __exit fmr2_exit(void)
{
- video_unregister_device(&fmr2_radio);
- release_region(io,2);
+ struct fmr2 *fmr2 = &fmr2_card;
+
+ video_unregister_device(&fmr2->vdev);
+ v4l2_device_unregister(&fmr2->v4l2_dev);
+ release_region(fmr2->io, 2);
}
module_init(fmr2_init);
-module_exit(fmr2_cleanup_module);
+module_exit(fmr2_exit);
#ifndef MODULE
projects / GitHub / exynos8895 / android_kernel_samsung_universal8895.git / commitdiff