#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 <linux/version.h> /* for KERNEL_VERSION MACRO */
+#include <linux/mutex.h>
+#include <linux/io.h> /* outb, outb_p */
+#include <linux/uaccess.h> /* copy to/from user */
#include <media/v4l2-ioctl.h>
-#include <media/v4l2-common.h>
-#include <linux/spinlock.h>
+#include <media/v4l2-device.h>
-#include <linux/version.h> /* for KERNEL_VERSION MACRO */
-#define RADIO_VERSION KERNEL_VERSION(0,0,3)
-#define RADIO_BANNER "GemTek Radio card driver: v0.0.3"
+#define RADIO_VERSION KERNEL_VERSION(0, 0, 3)
/*
* Module info.
static int keepmuted = 1;
static int initmute = 1;
static int radio_nr = -1;
-static unsigned long in_use;
module_param(io, int, 0444);
MODULE_PARM_DESC(io, "Force I/O port for the GemTek Radio card if automatic "
#define SHORT_DELAY 5 /* usec */
#define LONG_DELAY 75 /* usec */
-struct gemtek_device {
+struct gemtek {
+ struct v4l2_device v4l2_dev;
+ struct video_device vdev;
+ struct mutex lock;
unsigned long lastfreq;
int muted;
+ int verified;
+ int io;
u32 bu2614data;
};
+static struct gemtek gemtek_card;
+
#define BU2614_FREQ_BITS 16 /* D0..D15, Frequency data */
#define BU2614_PORT_BITS 3 /* P0..P2, Output port control data */
#define BU2614_VOID_BITS 4 /* unused */
#define BU2614_FMUN_MASK MKMASK(FMUN)
#define BU2614_TEST_MASK MKMASK(TEST)
-static struct gemtek_device gemtek_unit;
-
-static spinlock_t lock;
-
/*
* Set data which will be sent to BU2614FS.
*/
/*
* Transmit settings to BU2614FS over GemTek IC.
*/
-static void gemtek_bu2614_transmit(struct gemtek_device *dev)
+static void gemtek_bu2614_transmit(struct gemtek *gt)
{
int i, bit, q, mute;
- spin_lock(&lock);
+ mutex_lock(>->lock);
- mute = dev->muted ? GEMTEK_MT : 0x00;
+ mute = gt->muted ? GEMTEK_MT : 0x00;
- outb_p(mute | GEMTEK_DA | GEMTEK_CK, io);
+ outb_p(mute | GEMTEK_DA | GEMTEK_CK, gt->io);
udelay(SHORT_DELAY);
- outb_p(mute | GEMTEK_CE | GEMTEK_DA | GEMTEK_CK, io);
+ outb_p(mute | GEMTEK_CE | GEMTEK_DA | GEMTEK_CK, gt->io);
udelay(LONG_DELAY);
- for (i = 0, q = dev->bu2614data; i < 32; i++, q >>= 1) {
- bit = (q & 1) ? GEMTEK_DA : 0;
- outb_p(mute | GEMTEK_CE | bit, io);
- udelay(SHORT_DELAY);
- outb_p(mute | GEMTEK_CE | bit | GEMTEK_CK, io);
- udelay(SHORT_DELAY);
+ for (i = 0, q = gt->bu2614data; i < 32; i++, q >>= 1) {
+ bit = (q & 1) ? GEMTEK_DA : 0;
+ outb_p(mute | GEMTEK_CE | bit, gt->io);
+ udelay(SHORT_DELAY);
+ outb_p(mute | GEMTEK_CE | bit | GEMTEK_CK, gt->io);
+ udelay(SHORT_DELAY);
}
- outb_p(mute | GEMTEK_DA | GEMTEK_CK, io);
+ outb_p(mute | GEMTEK_DA | GEMTEK_CK, gt->io);
udelay(SHORT_DELAY);
- outb_p(mute | GEMTEK_CE | GEMTEK_DA | GEMTEK_CK, io);
+ outb_p(mute | GEMTEK_CE | GEMTEK_DA | GEMTEK_CK, gt->io);
udelay(LONG_DELAY);
- spin_unlock(&lock);
+ mutex_unlock(>->lock);
}
/*
/*
* Set FM-frequency.
*/
-static void gemtek_setfreq(struct gemtek_device *dev, unsigned long freq)
+static void gemtek_setfreq(struct gemtek *gt, unsigned long freq)
{
-
- if (keepmuted && hardmute && dev->muted)
+ if (keepmuted && hardmute && gt->muted)
return;
- if (freq < GEMTEK_LOWFREQ)
- freq = GEMTEK_LOWFREQ;
- else if (freq > GEMTEK_HIGHFREQ)
- freq = GEMTEK_HIGHFREQ;
+ freq = clamp_val(freq, GEMTEK_LOWFREQ, GEMTEK_HIGHFREQ);
- dev->lastfreq = freq;
- dev->muted = 0;
+ gt->lastfreq = freq;
+ gt->muted = 0;
- gemtek_bu2614_set(dev, BU2614_PORT, 0);
- gemtek_bu2614_set(dev, BU2614_FMES, 0);
- gemtek_bu2614_set(dev, BU2614_SWIN, 0); /* FM-mode */
- gemtek_bu2614_set(dev, BU2614_SWAL, 0);
- gemtek_bu2614_set(dev, BU2614_FMUN, 1); /* GT bit set */
- gemtek_bu2614_set(dev, BU2614_TEST, 0);
+ gemtek_bu2614_set(gt, BU2614_PORT, 0);
+ gemtek_bu2614_set(gt, BU2614_FMES, 0);
+ gemtek_bu2614_set(gt, BU2614_SWIN, 0); /* FM-mode */
+ gemtek_bu2614_set(gt, BU2614_SWAL, 0);
+ gemtek_bu2614_set(gt, BU2614_FMUN, 1); /* GT bit set */
+ gemtek_bu2614_set(gt, BU2614_TEST, 0);
- gemtek_bu2614_set(dev, BU2614_STDF, GEMTEK_STDF_3_125_KHZ);
- gemtek_bu2614_set(dev, BU2614_FREQ, gemtek_convfreq(freq));
+ gemtek_bu2614_set(gt, BU2614_STDF, GEMTEK_STDF_3_125_KHZ);
+ gemtek_bu2614_set(gt, BU2614_FREQ, gemtek_convfreq(freq));
- gemtek_bu2614_transmit(dev);
+ gemtek_bu2614_transmit(gt);
}
/*
* Set mute flag.
*/
-static void gemtek_mute(struct gemtek_device *dev)
+static void gemtek_mute(struct gemtek *gt)
{
int i;
- dev->muted = 1;
+
+ gt->muted = 1;
if (hardmute) {
/* Turn off PLL, disable data output */
- gemtek_bu2614_set(dev, BU2614_PORT, 0);
- gemtek_bu2614_set(dev, BU2614_FMES, 0); /* CT bit off */
- gemtek_bu2614_set(dev, BU2614_SWIN, 0); /* FM-mode */
- gemtek_bu2614_set(dev, BU2614_SWAL, 0);
- gemtek_bu2614_set(dev, BU2614_FMUN, 0); /* GT bit off */
- gemtek_bu2614_set(dev, BU2614_TEST, 0);
- gemtek_bu2614_set(dev, BU2614_STDF, GEMTEK_PLL_OFF);
- gemtek_bu2614_set(dev, BU2614_FREQ, 0);
- gemtek_bu2614_transmit(dev);
- } else {
- spin_lock(&lock);
+ gemtek_bu2614_set(gt, BU2614_PORT, 0);
+ gemtek_bu2614_set(gt, BU2614_FMES, 0); /* CT bit off */
+ gemtek_bu2614_set(gt, BU2614_SWIN, 0); /* FM-mode */
+ gemtek_bu2614_set(gt, BU2614_SWAL, 0);
+ gemtek_bu2614_set(gt, BU2614_FMUN, 0); /* GT bit off */
+ gemtek_bu2614_set(gt, BU2614_TEST, 0);
+ gemtek_bu2614_set(gt, BU2614_STDF, GEMTEK_PLL_OFF);
+ gemtek_bu2614_set(gt, BU2614_FREQ, 0);
+ gemtek_bu2614_transmit(gt);
+ return;
+ }
- /* Read bus contents (CE, CK and DA). */
- i = inb_p(io);
- /* Write it back with mute flag set. */
- outb_p((i >> 5) | GEMTEK_MT, io);
- udelay(SHORT_DELAY);
+ mutex_lock(>->lock);
- spin_unlock(&lock);
- }
+ /* Read bus contents (CE, CK and DA). */
+ i = inb_p(gt->io);
+ /* Write it back with mute flag set. */
+ outb_p((i >> 5) | GEMTEK_MT, gt->io);
+ udelay(SHORT_DELAY);
+
+ mutex_unlock(>->lock);
}
/*
* Unset mute flag.
*/
-static void gemtek_unmute(struct gemtek_device *dev)
+static void gemtek_unmute(struct gemtek *gt)
{
int i;
- dev->muted = 0;
+ gt->muted = 0;
if (hardmute) {
/* Turn PLL back on. */
- gemtek_setfreq(dev, dev->lastfreq);
- } else {
- spin_lock(&lock);
+ gemtek_setfreq(gt, gt->lastfreq);
+ return;
+ }
+ mutex_lock(>->lock);
- i = inb_p(io);
- outb_p(i >> 5, io);
- udelay(SHORT_DELAY);
+ i = inb_p(gt->io);
+ outb_p(i >> 5, gt->io);
+ udelay(SHORT_DELAY);
- spin_unlock(&lock);
- }
+ mutex_unlock(>->lock);
}
/*
* Get signal strength (= stereo status).
*/
-static inline int gemtek_getsigstr(void)
+static inline int gemtek_getsigstr(struct gemtek *gt)
{
- return inb_p(io) & GEMTEK_NS ? 0 : 1;
+ int sig;
+
+ mutex_lock(>->lock);
+ sig = inb_p(gt->io) & GEMTEK_NS ? 0 : 1;
+ mutex_unlock(>->lock);
+ return sig;
}
/*
* Check if requested card acts like GemTek Radio card.
*/
-static int gemtek_verify(int port)
+static int gemtek_verify(struct gemtek *gt, int port)
{
- static int verified = -1;
int i, q;
- if (verified == port)
+ if (gt->verified == port)
return 1;
- spin_lock(&lock);
+ mutex_lock(>->lock);
q = inb_p(port); /* Read bus contents before probing. */
/* Try to turn on CE, CK and DA respectively and check if card responds
udelay(SHORT_DELAY);
if ((inb_p(port) & (~GEMTEK_NS)) != (0x17 | (1 << (i + 5)))) {
- spin_unlock(&lock);
+ mutex_unlock(>->lock);
return 0;
}
}
outb_p(q >> 5, port); /* Write bus contents back. */
udelay(SHORT_DELAY);
- spin_unlock(&lock);
- verified = port;
+ mutex_unlock(>->lock);
+ gt->verified = port;
return 1;
}
/*
* Automatic probing for card.
*/
-static int gemtek_probe(void)
+static int gemtek_probe(struct gemtek *gt)
{
+ struct v4l2_device *v4l2_dev = >->v4l2_dev;
int ioports[] = { 0x20c, 0x30c, 0x24c, 0x34c, 0x248, 0x28c };
int i;
if (!probe) {
- printk(KERN_INFO "Automatic device probing disabled.\n");
+ v4l2_info(v4l2_dev, "Automatic device probing disabled.\n");
return -1;
}
- printk(KERN_INFO "Automatic device probing enabled.\n");
+ v4l2_info(v4l2_dev, "Automatic device probing enabled.\n");
for (i = 0; i < ARRAY_SIZE(ioports); ++i) {
- printk(KERN_INFO "Trying I/O port 0x%x...\n", ioports[i]);
+ v4l2_info(v4l2_dev, "Trying I/O port 0x%x...\n", ioports[i]);
if (!request_region(ioports[i], 1, "gemtek-probe")) {
- printk(KERN_WARNING "I/O port 0x%x busy!\n",
+ v4l2_warn(v4l2_dev, "I/O port 0x%x busy!\n",
ioports[i]);
continue;
}
- if (gemtek_verify(ioports[i])) {
- printk(KERN_INFO "Card found from I/O port "
+ if (gemtek_verify(gt, ioports[i])) {
+ v4l2_info(v4l2_dev, "Card found from I/O port "
"0x%x!\n", ioports[i]);
release_region(ioports[i], 1);
-
- io = ioports[i];
- return io;
+ gt->io = ioports[i];
+ return gt->io;
}
release_region(ioports[i], 1);
}
- printk(KERN_ERR "Automatic probing failed!\n");
-
+ v4l2_err(v4l2_dev, "Automatic probing failed!\n");
return -1;
}
/*
* Video 4 Linux stuff.
*/
-
-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 = 65535,
- .default_value = 0xff,
- .type = V4L2_CTRL_TYPE_INTEGER,
- }
-};
-
-static int gemtek_exclusive_open(struct file *file)
+static int gemtek_open(struct file *file)
{
- return test_and_set_bit(0, &in_use) ? -EBUSY : 0;
+ return 0;
}
-static int gemtek_exclusive_release(struct file *file)
+static int gemtek_release(struct file *file)
{
- clear_bit(0, &in_use);
return 0;
}
static const struct v4l2_file_operations gemtek_fops = {
.owner = THIS_MODULE,
- .open = gemtek_exclusive_open,
- .release = gemtek_exclusive_release,
+ .open = gemtek_open,
+ .release = gemtek_release,
.ioctl = video_ioctl2,
};
{
strlcpy(v->driver, "radio-gemtek", sizeof(v->driver));
strlcpy(v->card, "GemTek", 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 gemtek *gt = 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 = GEMTEK_LOWFREQ;
v->rangehigh = GEMTEK_HIGHFREQ;
v->capability = V4L2_TUNER_CAP_LOW | V4L2_TUNER_CAP_STEREO;
- v->signal = 0xffff * gemtek_getsigstr();
+ v->signal = 0xffff * gemtek_getsigstr(gt);
if (v->signal) {
v->audmode = V4L2_TUNER_MODE_STEREO;
v->rxsubchans = V4L2_TUNER_SUB_STEREO;
v->audmode = V4L2_TUNER_MODE_MONO;
v->rxsubchans = V4L2_TUNER_SUB_MONO;
}
-
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 != 0) ? -EINVAL : 0;
}
-static int vidioc_s_frequency(struct file *file, void *priv,
+static int vidioc_g_frequency(struct file *file, void *priv,
struct v4l2_frequency *f)
{
- struct gemtek_device *rt = video_drvdata(file);
-
- gemtek_setfreq(rt, f->frequency);
+ struct gemtek *gt = video_drvdata(file);
+ if (f->tuner != 0)
+ return -EINVAL;
+ f->type = V4L2_TUNER_RADIO;
+ f->frequency = gt->lastfreq;
return 0;
}
-static int vidioc_g_frequency(struct file *file, void *priv,
+static int vidioc_s_frequency(struct file *file, void *priv,
struct v4l2_frequency *f)
{
- struct gemtek_device *rt = video_drvdata(file);
+ struct gemtek *gt = video_drvdata(file);
- f->type = V4L2_TUNER_RADIO;
- f->frequency = rt->lastfreq;
+ if (f->tuner != 0 || f->type != V4L2_TUNER_RADIO)
+ return -EINVAL;
+ gemtek_setfreq(gt, f->frequency);
return 0;
}
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, 0);
+ default:
+ return -EINVAL;
}
- return -EINVAL;
}
static int vidioc_g_ctrl(struct file *file, void *priv,
struct v4l2_control *ctrl)
{
- struct gemtek_device *rt = video_drvdata(file);
+ struct gemtek *gt = video_drvdata(file);
switch (ctrl->id) {
case V4L2_CID_AUDIO_MUTE:
- ctrl->value = rt->muted;
- return 0;
- case V4L2_CID_AUDIO_VOLUME:
- if (rt->muted)
- ctrl->value = 0;
- else
- ctrl->value = 65535;
+ ctrl->value = gt->muted;
return 0;
}
return -EINVAL;
static int vidioc_s_ctrl(struct file *file, void *priv,
struct v4l2_control *ctrl)
{
- struct gemtek_device *rt = video_drvdata(file);
+ struct gemtek *gt = video_drvdata(file);
switch (ctrl->id) {
case V4L2_CID_AUDIO_MUTE:
if (ctrl->value)
- gemtek_mute(rt);
- else
- gemtek_unmute(rt);
- return 0;
- case V4L2_CID_AUDIO_VOLUME:
- if (ctrl->value)
- gemtek_unmute(rt);
+ gemtek_mute(gt);
else
- gemtek_mute(rt);
+ gemtek_unmute(gt);
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 (i != 0) ? -EINVAL : 0;
+}
+
+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;
}
static int vidioc_s_audio(struct file *file, void *priv, struct v4l2_audio *a)
{
- if (a->index != 0)
- return -EINVAL;
- return 0;
+ return (a->index != 0) ? -EINVAL : 0;
}
static const struct v4l2_ioctl_ops gemtek_ioctl_ops = {
.vidioc_s_ctrl = vidioc_s_ctrl
};
-static struct video_device gemtek_radio = {
- .name = "GemTek Radio card",
- .fops = &gemtek_fops,
- .ioctl_ops = &gemtek_ioctl_ops,
- .release = video_device_release_empty,
-};
-
/*
* Initialization / cleanup related stuff.
*/
-/*
- * Initilize card.
- */
static int __init gemtek_init(void)
{
- printk(KERN_INFO RADIO_BANNER "\n");
+ struct gemtek *gt = &gemtek_card;
+ struct v4l2_device *v4l2_dev = >->v4l2_dev;
+ int res;
- spin_lock_init(&lock);
+ strlcpy(v4l2_dev->name, "gemtek", sizeof(v4l2_dev->name));
- gemtek_probe();
- if (io) {
- if (!request_region(io, 1, "gemtek")) {
- printk(KERN_ERR "I/O port 0x%x already in use.\n", io);
+ v4l2_info(v4l2_dev, "GemTek Radio card driver: v0.0.3\n");
+
+ mutex_init(>->lock);
+
+ gt->verified = -1;
+ gt->io = io;
+ gemtek_probe(gt);
+ if (gt->io) {
+ if (!request_region(gt->io, 1, "gemtek")) {
+ v4l2_err(v4l2_dev, "I/O port 0x%x already in use.\n", gt->io);
return -EBUSY;
}
- if (!gemtek_verify(io))
- printk(KERN_WARNING "Card at I/O port 0x%x does not "
+ if (!gemtek_verify(gt, gt->io))
+ v4l2_warn(v4l2_dev, "Card at I/O port 0x%x does not "
"respond properly, check your "
- "configuration.\n", io);
+ "configuration.\n", gt->io);
else
- printk(KERN_INFO "Using I/O port 0x%x.\n", io);
+ v4l2_info(v4l2_dev, "Using I/O port 0x%x.\n", gt->io);
} else if (probe) {
- printk(KERN_ERR "Automatic probing failed and no "
+ v4l2_err(v4l2_dev, "Automatic probing failed and no "
"fixed I/O port defined.\n");
return -ENODEV;
} else {
- printk(KERN_ERR "Automatic probing disabled but no fixed "
+ v4l2_err(v4l2_dev, "Automatic probing disabled but no fixed "
"I/O port defined.");
return -EINVAL;
}
- video_set_drvdata(&gemtek_radio, &gemtek_unit);
+ res = v4l2_device_register(NULL, v4l2_dev);
+ if (res < 0) {
+ v4l2_err(v4l2_dev, "Could not register v4l2_device\n");
+ release_region(gt->io, 1);
+ return res;
+ }
- if (video_register_device(&gemtek_radio, VFL_TYPE_RADIO, radio_nr) < 0) {
- release_region(io, 1);
+ strlcpy(gt->vdev.name, v4l2_dev->name, sizeof(gt->vdev.name));
+ gt->vdev.v4l2_dev = v4l2_dev;
+ gt->vdev.fops = &gemtek_fops;
+ gt->vdev.ioctl_ops = &gemtek_ioctl_ops;
+ gt->vdev.release = video_device_release_empty;
+ video_set_drvdata(>->vdev, gt);
+
+ if (video_register_device(>->vdev, VFL_TYPE_RADIO, radio_nr) < 0) {
+ v4l2_device_unregister(v4l2_dev);
+ release_region(gt->io, 1);
return -EBUSY;
}
/* Set defaults */
- gemtek_unit.lastfreq = GEMTEK_LOWFREQ;
- gemtek_unit.bu2614data = 0;
+ gt->lastfreq = GEMTEK_LOWFREQ;
+ gt->bu2614data = 0;
if (initmute)
- gemtek_mute(&gemtek_unit);
+ gemtek_mute(gt);
return 0;
}
*/
static void __exit gemtek_exit(void)
{
+ struct gemtek *gt = &gemtek_card;
+ struct v4l2_device *v4l2_dev = >->v4l2_dev;
+
if (shutdown) {
hardmute = 1; /* Turn off PLL */
- gemtek_mute(&gemtek_unit);
+ gemtek_mute(gt);
} else {
- printk(KERN_INFO "Module unloaded but card not muted!\n");
+ v4l2_info(v4l2_dev, "Module unloaded but card not muted!\n");
}
- video_unregister_device(&gemtek_radio);
- release_region(io, 1);
+ video_unregister_device(>->vdev);
+ v4l2_device_unregister(>->v4l2_dev);
+ release_region(gt->io, 1);
}
module_init(gemtek_init);
projects / linux-2.6-omap-h63xx.git / commitdiff