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Commit 502b71b5 authored by Hans Verkuil's avatar Hans Verkuil Committed by Mauro Carvalho Chehab
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V4L/DVB (10884): radio-gemtek: convert to v4l2_device. 

Signed-off-by: default avatarHans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@redhat.com>
parent 79f94878
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Showing with 187 additions and 210 deletions
drivers/media/radio/radio-gemtek.c
View file @ 502b71b5
......@@ -20,16 +20,15 @@
#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.
......@@ -57,7 +56,6 @@ static int shutdown = 1;
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 "
......@@ -112,12 +110,19 @@ module_param(radio_nr, int, 0444);
#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 */
......@@ -153,10 +158,6 @@ struct gemtek_device {
#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.
*/
......@@ -166,33 +167,33 @@ static spinlock_t lock;
/*
* 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(&gt->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) {
for (i = 0, q = gt->bu2614data; i < 32; i++, q >>= 1) {
bit = (q & 1) ? GEMTEK_DA : 0;
outb_p(mute | GEMTEK_CE | bit, io);
outb_p(mute | GEMTEK_CE | bit, gt->io);
udelay(SHORT_DELAY);
outb_p(mute | GEMTEK_CE | bit | GEMTEK_CK, io);
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(&gt->lock);
}
/*
......@@ -206,107 +207,109 @@ static unsigned long gemtek_convfreq(unsigned long freq)
/*
* 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;
}
mutex_lock(&gt->lock);
/* Read bus contents (CE, CK and DA). */
i = inb_p(io);
i = inb_p(gt->io);
/* Write it back with mute flag set. */
outb_p((i >> 5) | GEMTEK_MT, io);
outb_p((i >> 5) | GEMTEK_MT, gt->io);
udelay(SHORT_DELAY);
spin_unlock(&lock);
}
mutex_unlock(&gt->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(&gt->lock);
i = inb_p(io);
outb_p(i >> 5, io);
i = inb_p(gt->io);
outb_p(i >> 5, gt->io);
udelay(SHORT_DELAY);
spin_unlock(&lock);
}
mutex_unlock(&gt->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(&gt->lock);
sig = inb_p(gt->io) & GEMTEK_NS ? 0 : 1;
mutex_unlock(&gt->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(&gt->lock);
q = inb_p(port); /* Read bus contents before probing. */
/* Try to turn on CE, CK and DA respectively and check if card responds
......@@ -316,15 +319,15 @@ static int gemtek_verify(int port)
udelay(SHORT_DELAY);
if ((inb_p(port) & (~GEMTEK_NS)) != (0x17 | (1 << (i + 5)))) {
spin_unlock(&lock);
mutex_unlock(&gt->lock);
return 0;
}
}
outb_p(q >> 5, port); /* Write bus contents back. */
udelay(SHORT_DELAY);
spin_unlock(&lock);
verified = port;
mutex_unlock(&gt->lock);
gt->verified = port;
return 1;
}
......@@ -332,83 +335,61 @@ static int gemtek_verify(int port)
/*
* Automatic probing for card.
*/
static int gemtek_probe(void)
static int gemtek_probe(struct gemtek *gt)
{
struct v4l2_device *v4l2_dev = &gt->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,
};
......@@ -417,23 +398,25 @@ static int vidioc_querycap(struct file *file, void *priv,
{
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;
......@@ -441,65 +424,56 @@ static int vidioc_g_tuner(struct file *file, void *priv, struct v4l2_tuner *v)
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;
}
}
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;
......@@ -508,35 +482,19 @@ static int vidioc_g_ctrl(struct file *file, void *priv,
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);
gemtek_mute(gt);
else
gemtek_unmute(rt);
return 0;
case V4L2_CID_AUDIO_VOLUME:
if (ctrl->value)
gemtek_unmute(rt);
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;
......@@ -545,16 +503,20 @@ 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)
{
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 = {
......@@ -572,62 +534,73 @@ 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 = &gt->v4l2_dev;
int res;
strlcpy(v4l2_dev->name, "gemtek", sizeof(v4l2_dev->name));
spin_lock_init(&lock);
v4l2_info(v4l2_dev, "GemTek Radio card driver: v0.0.3\n");
gemtek_probe();
if (io) {
if (!request_region(io, 1, "gemtek")) {
printk(KERN_ERR "I/O port 0x%x already in use.\n", io);
mutex_init(&gt->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;
}
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(&gt->vdev, gt);
if (video_register_device(&gemtek_radio, VFL_TYPE_RADIO, radio_nr) < 0) {
release_region(io, 1);
if (video_register_device(&gt->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;
}
......@@ -637,15 +610,19 @@ static int __init gemtek_init(void)
*/
static void __exit gemtek_exit(void)
{
struct gemtek *gt = &gemtek_card;
struct v4l2_device *v4l2_dev = &gt->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(&gt->vdev);
v4l2_device_unregister(&gt->v4l2_dev);
release_region(gt->io, 1);
}
module_init(gemtek_init);
......
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