#include <linux/init.h>
#include <linux/ioport.h>
#include <linux/delay.h>
-#include <asm/io.h>
-#include <asm/uaccess.h>
#include <linux/mutex.h>
-
#include <linux/pci.h>
#include <linux/videodev2.h>
-#include <media/v4l2-common.h>
+#include <linux/version.h> /* for KERNEL_VERSION MACRO */
+#include <linux/io.h>
+#include <linux/uaccess.h>
+#include <media/v4l2-device.h>
#include <media/v4l2-ioctl.h>
+MODULE_AUTHOR("Dimitromanolakis Apostolos, apdim@grecian.net");
+MODULE_DESCRIPTION("Radio driver for the Guillemot Maxi Radio FM2000 radio.");
+MODULE_LICENSE("GPL");
+
+static int radio_nr = -1;
+module_param(radio_nr, int, 0);
+
+static int debug;
+
+module_param(debug, int, 0644);
+MODULE_PARM_DESC(debug, "activates debug info");
+
#define DRIVER_VERSION "0.77"
-#include <linux/version.h> /* for KERNEL_VERSION MACRO */
-#define RADIO_VERSION KERNEL_VERSION(0,7,7)
-
-static struct video_device maxiradio_radio;
-
-#define dprintk(num, fmt, arg...) \
- do { \
- if (maxiradio_radio.debug >= num) \
- printk(KERN_DEBUG "%s: " fmt, \
- maxiradio_radio.name, ## arg); } while (0)
-
-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,
- }
-};
+#define RADIO_VERSION KERNEL_VERSION(0, 7, 7)
+
+#define dprintk(dev, num, fmt, arg...) \
+ v4l2_dbg(num, debug, &dev->v4l2_dev, fmt, ## arg)
#ifndef PCI_VENDOR_ID_GUILLEMOT
#define PCI_VENDOR_ID_GUILLEMOT 0x5046
/* TEA5757 pin mappings */
-static const int clk = 1, data = 2, wren = 4, mo_st = 8, power = 16 ;
-
-static int radio_nr = -1;
-module_param(radio_nr, int, 0);
+static const int clk = 1, data = 2, wren = 4, mo_st = 8, power = 16;
-static unsigned long in_use;
-
-#define FREQ_LO 50*16000
-#define FREQ_HI 150*16000
+#define FREQ_LO (50 * 16000)
+#define FREQ_HI (150 * 16000)
#define FREQ_IF 171200 /* 10.7*16000 */
#define FREQ_STEP 200 /* 12.5*16 */
/* (x==fmhz*16*1000) -> bits */
-#define FREQ2BITS(x) ((( (unsigned int)(x)+FREQ_IF+(FREQ_STEP<<1)) \
- /(FREQ_STEP<<2))<<2)
+#define FREQ2BITS(x) \
+ ((((unsigned int)(x) + FREQ_IF + (FREQ_STEP << 1)) / (FREQ_STEP << 2)) << 2)
#define BITS2FREQ(x) ((x) * FREQ_STEP - FREQ_IF)
-static int maxiradio_exclusive_open(struct file *file)
+struct maxiradio
{
- return test_and_set_bit(0, &in_use) ? -EBUSY : 0;
-}
-
-static int maxiradio_exclusive_release(struct file *file)
-{
- clear_bit(0, &in_use);
- return 0;
-}
-
-static const struct v4l2_file_operations maxiradio_fops = {
- .owner = THIS_MODULE,
- .open = maxiradio_exclusive_open,
- .release = maxiradio_exclusive_release,
- .ioctl = video_ioctl2,
-};
+ struct v4l2_device v4l2_dev;
+ struct video_device vdev;
+ struct pci_dev *pdev;
-static struct radio_device
-{
- __u16 io, /* base of radio io */
- muted, /* VIDEO_AUDIO_MUTE */
- stereo, /* VIDEO_TUNER_STEREO_ON */
- tuned; /* signal strength (0 or 0xffff) */
+ u16 io; /* base of radio io */
+ u16 muted; /* VIDEO_AUDIO_MUTE */
+ u16 stereo; /* VIDEO_TUNER_STEREO_ON */
+ u16 tuned; /* signal strength (0 or 0xffff) */
unsigned long freq;
struct mutex lock;
-} radio_unit = {
- .muted =1,
- .freq = FREQ_LO,
};
-static void outbit(unsigned long bit, __u16 io)
+static inline struct maxiradio *to_maxiradio(struct v4l2_device *v4l2_dev)
{
- if (bit != 0)
- {
- outb( power|wren|data ,io); udelay(4);
- outb( power|wren|data|clk ,io); udelay(4);
- outb( power|wren|data ,io); udelay(4);
- }
- else
- {
- outb( power|wren ,io); udelay(4);
- outb( power|wren|clk ,io); udelay(4);
- outb( power|wren ,io); udelay(4);
- }
+ return container_of(v4l2_dev, struct maxiradio, v4l2_dev);
}
-static void turn_power(__u16 io, int p)
+static void outbit(unsigned long bit, u16 io)
+{
+ int val = power | wren | (bit ? data : 0);
+
+ outb(val, io);
+ udelay(4);
+ outb(val | clk, io);
+ udelay(4);
+ outb(val, io);
+ udelay(4);
+}
+
+static void turn_power(struct maxiradio *dev, int p)
{
if (p != 0) {
- dprintk(1, "Radio powered on\n");
- outb(power, io);
+ dprintk(dev, 1, "Radio powered on\n");
+ outb(power, dev->io);
} else {
- dprintk(1, "Radio powered off\n");
- outb(0,io);
+ dprintk(dev, 1, "Radio powered off\n");
+ outb(0, dev->io);
}
}
-static void set_freq(__u16 io, __u32 freq)
+static void set_freq(struct maxiradio *dev, u32 freq)
{
unsigned long int si;
int bl;
+ int io = dev->io;
int val = FREQ2BITS(freq);
/* TEA5757 shift register bits (see pdf) */
si >>= 1;
}
- dprintk(1, "Radio freq set to %d.%02d MHz\n",
+ dprintk(dev, 1, "Radio freq set to %d.%02d MHz\n",
freq / 16000,
freq % 16000 * 100 / 16000);
- turn_power(io, 1);
+ turn_power(dev, 1);
}
-static int get_stereo(__u16 io)
+static int get_stereo(u16 io)
{
outb(power,io);
udelay(4);
return !(inb(io) & mo_st);
}
-static int get_tune(__u16 io)
+static int get_tune(u16 io)
{
outb(power+clk,io);
udelay(4);
}
-static int vidioc_querycap (struct file *file, void *priv,
+static int vidioc_querycap(struct file *file, void *priv,
struct v4l2_capability *v)
{
- strlcpy(v->driver, "radio-maxiradio", sizeof (v->driver));
- strlcpy(v->card, "Maxi Radio FM2000 radio", sizeof (v->card));
- sprintf(v->bus_info,"ISA");
- v->version = RADIO_VERSION;
- v->capabilities = V4L2_CAP_TUNER;
+ struct maxiradio *dev = video_drvdata(file);
+ strlcpy(v->driver, "radio-maxiradio", sizeof(v->driver));
+ strlcpy(v->card, "Maxi Radio FM2000 radio", sizeof(v->card));
+ snprintf(v->bus_info, sizeof(v->bus_info), "PCI:%s", pci_name(dev->pdev));
+ v->version = RADIO_VERSION;
+ v->capabilities = V4L2_CAP_TUNER | V4L2_CAP_RADIO;
return 0;
}
-static int vidioc_g_tuner (struct file *file, void *priv,
+static int vidioc_g_tuner(struct file *file, void *priv,
struct v4l2_tuner *v)
{
- struct radio_device *card = video_drvdata(file);
+ struct maxiradio *dev = video_drvdata(file);
if (v->index > 0)
return -EINVAL;
- memset(v,0,sizeof(*v));
- strcpy(v->name, "FM");
+ mutex_lock(&dev->lock);
+ strlcpy(v->name, "FM", sizeof(v->name));
v->type = V4L2_TUNER_RADIO;
-
- v->rangelow=FREQ_LO;
- v->rangehigh=FREQ_HI;
- v->rxsubchans =V4L2_TUNER_SUB_MONO|V4L2_TUNER_SUB_STEREO;
- v->capability=V4L2_TUNER_CAP_LOW;
- if(get_stereo(card->io))
+ v->rangelow = FREQ_LO;
+ v->rangehigh = FREQ_HI;
+ v->rxsubchans = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO;
+ v->capability = V4L2_TUNER_CAP_LOW;
+ if (get_stereo(dev->io))
v->audmode = V4L2_TUNER_MODE_STEREO;
else
v->audmode = V4L2_TUNER_MODE_MONO;
- v->signal=0xffff*get_tune(card->io);
+ v->signal = 0xffff * get_tune(dev->io);
+ mutex_unlock(&dev->lock);
return 0;
}
-static int vidioc_s_tuner (struct file *file, void *priv,
+static int vidioc_s_tuner(struct file *file, void *priv,
struct v4l2_tuner *v)
{
- if (v->index > 0)
- return -EINVAL;
-
- 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, "FM");
- a->capability = V4L2_AUDCAP_STEREO;
- return 0;
+ return v->index ? -EINVAL : 0;
}
static int vidioc_g_input(struct file *filp, void *priv, unsigned int *i)
{
*i = 0;
-
return 0;
}
static int vidioc_s_input(struct file *filp, void *priv, unsigned int i)
{
- if (i != 0)
- return -EINVAL;
+ return i ? -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,
+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 ? -EINVAL : 0;
}
-static int vidioc_s_frequency (struct file *file, void *priv,
+static int vidioc_s_frequency(struct file *file, void *priv,
struct v4l2_frequency *f)
{
- struct radio_device *card = video_drvdata(file);
+ struct maxiradio *dev = video_drvdata(file);
if (f->frequency < FREQ_LO || f->frequency > FREQ_HI) {
- dprintk(1, "radio freq (%d.%02d MHz) out of range (%d-%d)\n",
+ dprintk(dev, 1, "radio freq (%d.%02d MHz) out of range (%d-%d)\n",
f->frequency / 16000,
f->frequency % 16000 * 100 / 16000,
FREQ_LO / 16000, FREQ_HI / 16000);
return -EINVAL;
}
- card->freq = f->frequency;
- set_freq(card->io, card->freq);
+ mutex_lock(&dev->lock);
+ dev->freq = f->frequency;
+ set_freq(dev, dev->freq);
msleep(125);
+ mutex_unlock(&dev->lock);
return 0;
}
-static int vidioc_g_frequency (struct file *file, void *priv,
+static int vidioc_g_frequency(struct file *file, void *priv,
struct v4l2_frequency *f)
{
- struct radio_device *card = video_drvdata(file);
+ struct maxiradio *dev = video_drvdata(file);
f->type = V4L2_TUNER_RADIO;
- f->frequency = card->freq;
+ f->frequency = dev->freq;
- dprintk(4, "radio freq is %d.%02d MHz",
+ dprintk(dev, 4, "radio freq is %d.%02d MHz",
f->frequency / 16000,
f->frequency % 16000 * 100 / 16000);
return 0;
}
-static int vidioc_queryctrl (struct file *file, void *priv,
+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);
}
-
return -EINVAL;
}
-static int vidioc_g_ctrl (struct file *file, void *priv,
- struct v4l2_control *ctrl)
+static int vidioc_g_ctrl(struct file *file, void *priv,
+ struct v4l2_control *ctrl)
{
- struct radio_device *card = video_drvdata(file);
+ struct maxiradio *dev = video_drvdata(file);
switch (ctrl->id) {
- case V4L2_CID_AUDIO_MUTE:
- ctrl->value=card->muted;
- return (0);
+ case V4L2_CID_AUDIO_MUTE:
+ ctrl->value = dev->muted;
+ return 0;
}
return -EINVAL;
}
-static int vidioc_s_ctrl (struct file *file, void *priv,
- struct v4l2_control *ctrl)
+static int vidioc_s_ctrl(struct file *file, void *priv,
+ struct v4l2_control *ctrl)
{
- struct radio_device *card = video_drvdata(file);
+ struct maxiradio *dev = video_drvdata(file);
switch (ctrl->id) {
- case V4L2_CID_AUDIO_MUTE:
- card->muted = ctrl->value;
- if(card->muted)
- turn_power(card->io, 0);
- else
- set_freq(card->io, card->freq);
- return 0;
+ case V4L2_CID_AUDIO_MUTE:
+ mutex_lock(&dev->lock);
+ dev->muted = ctrl->value;
+ if (dev->muted)
+ turn_power(dev, 0);
+ else
+ set_freq(dev, dev->freq);
+ mutex_unlock(&dev->lock);
+ return 0;
}
return -EINVAL;
}
+static int maxiradio_open(struct file *file)
+{
+ return 0;
+}
+
+static int maxiradio_release(struct file *file)
+{
+ return 0;
+}
+
+static const struct v4l2_file_operations maxiradio_fops = {
+ .owner = THIS_MODULE,
+ .open = maxiradio_open,
+ .release = maxiradio_release,
+ .ioctl = video_ioctl2,
+};
+
static const struct v4l2_ioctl_ops maxiradio_ioctl_ops = {
.vidioc_querycap = vidioc_querycap,
.vidioc_g_tuner = vidioc_g_tuner,
.vidioc_s_ctrl = vidioc_s_ctrl,
};
-static struct video_device maxiradio_radio = {
- .name = "Maxi Radio FM2000 radio",
- .fops = &maxiradio_fops,
- .ioctl_ops = &maxiradio_ioctl_ops,
- .release = video_device_release_empty,
-};
-
static int __devinit maxiradio_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
{
- if(!request_region(pci_resource_start(pdev, 0),
+ struct maxiradio *dev;
+ struct v4l2_device *v4l2_dev;
+ int retval = -ENOMEM;
+
+ dev = kzalloc(sizeof(*dev), GFP_KERNEL);
+ if (dev == NULL) {
+ dev_err(&pdev->dev, "not enough memory\n");
+ return -ENOMEM;
+ }
+
+ v4l2_dev = &dev->v4l2_dev;
+ mutex_init(&dev->lock);
+ dev->pdev = pdev;
+ dev->muted = 1;
+ dev->freq = FREQ_LO;
+
+ strlcpy(v4l2_dev->name, "maxiradio", sizeof(v4l2_dev->name));
+
+ retval = v4l2_device_register(&pdev->dev, v4l2_dev);
+ if (retval < 0) {
+ v4l2_err(v4l2_dev, "Could not register v4l2_device\n");
+ goto errfr;
+ }
+
+ if (!request_region(pci_resource_start(pdev, 0),
pci_resource_len(pdev, 0), "Maxi Radio FM 2000")) {
- printk(KERN_ERR "radio-maxiradio: can't reserve I/O ports\n");
+ v4l2_err(v4l2_dev, "can't reserve I/O ports\n");
goto err_out;
}
if (pci_enable_device(pdev))
goto err_out_free_region;
- radio_unit.io = pci_resource_start(pdev, 0);
- mutex_init(&radio_unit.lock);
- video_set_drvdata(&maxiradio_radio, &radio_unit);
+ dev->io = pci_resource_start(pdev, 0);
+ strlcpy(dev->vdev.name, v4l2_dev->name, sizeof(dev->vdev.name));
+ dev->vdev.v4l2_dev = v4l2_dev;
+ dev->vdev.fops = &maxiradio_fops;
+ dev->vdev.ioctl_ops = &maxiradio_ioctl_ops;
+ dev->vdev.release = video_device_release_empty;
+ video_set_drvdata(&dev->vdev, dev);
- if (video_register_device(&maxiradio_radio, VFL_TYPE_RADIO, radio_nr) < 0) {
- printk("radio-maxiradio: can't register device!");
+ if (video_register_device(&dev->vdev, VFL_TYPE_RADIO, radio_nr) < 0) {
+ v4l2_err(v4l2_dev, "can't register device!");
goto err_out_free_region;
}
- printk(KERN_INFO "radio-maxiradio: version "
- DRIVER_VERSION
- " time "
- __TIME__ " "
- __DATE__
- "\n");
+ v4l2_info(v4l2_dev, "version " DRIVER_VERSION
+ " time " __TIME__ " " __DATE__ "\n");
- printk(KERN_INFO "radio-maxiradio: found Guillemot MAXI Radio device (io = 0x%x)\n",
- radio_unit.io);
+ v4l2_info(v4l2_dev, "found Guillemot MAXI Radio device (io = 0x%x)\n",
+ dev->io);
return 0;
err_out_free_region:
release_region(pci_resource_start(pdev, 0), pci_resource_len(pdev, 0));
err_out:
+ v4l2_device_unregister(v4l2_dev);
+errfr:
+ kfree(dev);
return -ENODEV;
}
static void __devexit maxiradio_remove_one(struct pci_dev *pdev)
{
- video_unregister_device(&maxiradio_radio);
+ struct v4l2_device *v4l2_dev = dev_get_drvdata(&pdev->dev);
+ struct maxiradio *dev = to_maxiradio(v4l2_dev);
+
+ video_unregister_device(&dev->vdev);
+ v4l2_device_unregister(&dev->v4l2_dev);
release_region(pci_resource_start(pdev, 0), pci_resource_len(pdev, 0));
}
static struct pci_device_id maxiradio_pci_tbl[] = {
{ PCI_VENDOR_ID_GUILLEMOT, PCI_DEVICE_ID_GUILLEMOT_MAXIRADIO,
PCI_ANY_ID, PCI_ANY_ID, },
- { 0,}
+ { 0 }
};
MODULE_DEVICE_TABLE(pci, maxiradio_pci_tbl);
module_init(maxiradio_radio_init);
module_exit(maxiradio_radio_exit);
-
-MODULE_AUTHOR("Dimitromanolakis Apostolos, apdim@grecian.net");
-MODULE_DESCRIPTION("Radio driver for the Guillemot Maxi Radio FM2000 radio.");
-MODULE_LICENSE("GPL");
-
-module_param_named(debug,maxiradio_radio.debug, int, 0644);
-MODULE_PARM_DESC(debug,"activates debug info");
projects / platform / kernel / linux-arm64.git / commitdiff