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path: root/drivers/media/radio/radio-maxiradio.c
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Diffstat (limited to 'drivers/media/radio/radio-maxiradio.c')
-rw-r--r--drivers/media/radio/radio-maxiradio.c367
1 files changed, 109 insertions, 258 deletions
diff --git a/drivers/media/radio/radio-maxiradio.c b/drivers/media/radio/radio-maxiradio.c
index f93d7afe730..5236035f0f2 100644
--- a/drivers/media/radio/radio-maxiradio.c
+++ b/drivers/media/radio/radio-maxiradio.c
@@ -13,20 +13,23 @@
* anybody does please mail me.
*
* For the pdf file see:
- * http://www.semiconductors.philips.com/pip/TEA5757H/V1
+ * http://www.nxp.com/acrobat_download2/expired_datasheets/TEA5757_5759_3.pdf
*
*
* CHANGES:
* 0.75b
* - better pci interface thanks to Francois Romieu <romieu@cogenit.fr>
*
- * 0.75
+ * 0.75 Sun Feb 4 22:51:27 EET 2001
* - tiding up
* - removed support for multiple devices as it didn't work anyway
*
* BUGS:
* - card unmutes if you change frequency
*
+ * (c) 2006, 2007 by Mauro Carvalho Chehab <mchehab@infradead.org>:
+ * - Conversion to V4L2 API
+ * - Uses video_ioctl2 for parsing and to add debug support
*/
@@ -34,299 +37,158 @@
#include <linux/init.h>
#include <linux/ioport.h>
#include <linux/delay.h>
-#include <linux/sched.h>
-#include <asm/io.h>
-#include <asm/uaccess.h>
#include <linux/mutex.h>
-
#include <linux/pci.h>
-#include <linux/videodev.h>
-#include <media/v4l2-common.h>
-
-/* version 0.75 Sun Feb 4 22:51:27 EET 2001 */
-#define DRIVER_VERSION "0.75"
-
-#ifndef PCI_VENDOR_ID_GUILLEMOT
-#define PCI_VENDOR_ID_GUILLEMOT 0x5046
-#endif
-
-#ifndef PCI_DEVICE_ID_GUILLEMOT
-#define PCI_DEVICE_ID_GUILLEMOT_MAXIRADIO 0x1001
-#endif
-
+#include <linux/videodev2.h>
+#include <linux/io.h>
+#include <linux/slab.h>
+#include <media/tea575x.h>
+#include <media/v4l2-device.h>
+#include <media/v4l2-ioctl.h>
+#include <media/v4l2-fh.h>
+#include <media/v4l2-ctrls.h>
+#include <media/v4l2-event.h>
-/* TEA5757 pin mappings */
-static const int clk = 1, data = 2, wren = 4, mo_st = 8, power = 16 ;
+MODULE_AUTHOR("Dimitromanolakis Apostolos, apdim@grecian.net");
+MODULE_DESCRIPTION("Radio driver for the Guillemot Maxi Radio FM2000.");
+MODULE_LICENSE("GPL");
+MODULE_VERSION("1.0.0");
static int radio_nr = -1;
-module_param(radio_nr, int, 0);
-
-
-#define FREQ_LO 50*16000
-#define FREQ_HI 150*16000
-
-#define FREQ_IF 171200 /* 10.7*16000 */
-#define FREQ_STEP 200 /* 12.5*16 */
-
-#define FREQ2BITS(x) ((( (unsigned int)(x)+FREQ_IF+(FREQ_STEP<<1))\
- /(FREQ_STEP<<2))<<2) /* (x==fmhz*16*1000) -> bits */
-
-#define BITS2FREQ(x) ((x) * FREQ_STEP - FREQ_IF)
+module_param(radio_nr, int, 0644);
+MODULE_PARM_DESC(radio_nr, "Radio device number");
+/* TEA5757 pin mappings */
+static const int clk = 1, data = 2, wren = 4, mo_st = 8, power = 16;
-static int radio_ioctl(struct inode *inode, struct file *file,
- unsigned int cmd, unsigned long arg);
+static atomic_t maxiradio_instance = ATOMIC_INIT(0);
-static struct file_operations maxiradio_fops = {
- .owner = THIS_MODULE,
- .open = video_exclusive_open,
- .release = video_exclusive_release,
- .ioctl = radio_ioctl,
- .compat_ioctl = v4l_compat_ioctl32,
- .llseek = no_llseek,
-};
-static struct video_device maxiradio_radio =
-{
- .owner = THIS_MODULE,
- .name = "Maxi Radio FM2000 radio",
- .type = VID_TYPE_TUNER,
- .hardware = VID_HARDWARE_SF16MI,
- .fops = &maxiradio_fops,
-};
+#define PCI_VENDOR_ID_GUILLEMOT 0x5046
+#define PCI_DEVICE_ID_GUILLEMOT_MAXIRADIO 0x1001
-static struct radio_device
+struct maxiradio
{
- __u16 io, /* base of radio io */
- muted, /* VIDEO_AUDIO_MUTE */
- stereo, /* VIDEO_TUNER_STEREO_ON */
- tuned; /* signal strength (0 or 0xffff) */
+ struct snd_tea575x tea;
+ struct v4l2_device v4l2_dev;
+ struct pci_dev *pdev;
- unsigned long freq;
-
- struct mutex lock;
-} radio_unit = {0, 0, 0, 0, };
-
-
-static void outbit(unsigned long bit, __u16 io)
-{
- 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);
- }
-}
+ u16 io; /* base of radio io */
+};
-static void turn_power(__u16 io, int p)
+static inline struct maxiradio *to_maxiradio(struct v4l2_device *v4l2_dev)
{
- if(p != 0) outb(power, io); else outb(0,io);
+ return container_of(v4l2_dev, struct maxiradio, v4l2_dev);
}
-
-static void set_freq(__u16 io, __u32 data)
+static void maxiradio_tea575x_set_pins(struct snd_tea575x *tea, u8 pins)
{
- unsigned long int si;
- int bl;
+ struct maxiradio *dev = tea->private_data;
+ u8 bits = 0;
- /* TEA5757 shift register bits (see pdf) */
+ bits |= (pins & TEA575X_DATA) ? data : 0;
+ bits |= (pins & TEA575X_CLK) ? clk : 0;
+ bits |= (pins & TEA575X_WREN) ? wren : 0;
+ bits |= power;
- outbit(0,io); // 24 search
- outbit(1,io); // 23 search up/down
-
- outbit(0,io); // 22 stereo/mono
-
- outbit(0,io); // 21 band
- outbit(0,io); // 20 band (only 00=FM works I think)
-
- outbit(0,io); // 19 port ?
- outbit(0,io); // 18 port ?
-
- outbit(0,io); // 17 search level
- outbit(0,io); // 16 search level
-
- si = 0x8000;
- for(bl = 1; bl <= 16 ; bl++) { outbit(data & si,io); si >>=1; }
-
- outb(power,io);
+ outb(bits, dev->io);
}
-static int get_stereo(__u16 io)
+/* Note: this card cannot read out the data of the shift registers,
+ only the mono/stereo pin works. */
+static u8 maxiradio_tea575x_get_pins(struct snd_tea575x *tea)
{
- outb(power,io); udelay(4);
- return !(inb(io) & mo_st);
+ struct maxiradio *dev = tea->private_data;
+ u8 bits = inb(dev->io);
+
+ return ((bits & data) ? TEA575X_DATA : 0) |
+ ((bits & mo_st) ? TEA575X_MOST : 0);
}
-static int get_tune(__u16 io)
+static void maxiradio_tea575x_set_direction(struct snd_tea575x *tea, bool output)
{
- outb(power+clk,io); udelay(4);
- return !(inb(io) & mo_st);
}
+static struct snd_tea575x_ops maxiradio_tea_ops = {
+ .set_pins = maxiradio_tea575x_set_pins,
+ .get_pins = maxiradio_tea575x_get_pins,
+ .set_direction = maxiradio_tea575x_set_direction,
+};
-static inline int radio_function(struct inode *inode, struct file *file,
- unsigned int cmd, void *arg)
+static int maxiradio_probe(struct pci_dev *pdev,
+ const struct pci_device_id *ent)
{
- struct video_device *dev = video_devdata(file);
- struct radio_device *card=dev->priv;
-
- switch(cmd) {
- case VIDIOCGCAP: {
- struct video_capability *v = arg;
-
- memset(v,0,sizeof(*v));
- strcpy(v->name, "Maxi Radio FM2000 radio");
- v->type=VID_TYPE_TUNER;
- v->channels=v->audios=1;
- return 0;
- }
- case VIDIOCGTUNER: {
- struct video_tuner *v = arg;
-
- if(v->tuner)
- return -EINVAL;
-
- card->stereo = 0xffff * get_stereo(card->io);
- card->tuned = 0xffff * get_tune(card->io);
-
- v->flags = VIDEO_TUNER_LOW | card->stereo;
- v->signal = card->tuned;
-
- strcpy(v->name, "FM");
-
- v->rangelow = FREQ_LO;
- v->rangehigh = FREQ_HI;
- v->mode = VIDEO_MODE_AUTO;
-
- return 0;
- }
- case VIDIOCSTUNER: {
- struct video_tuner *v = arg;
- if(v->tuner!=0)
- return -EINVAL;
- return 0;
- }
- case VIDIOCGFREQ: {
- unsigned long *freq = arg;
-
- *freq = card->freq;
- return 0;
- }
- case VIDIOCSFREQ: {
- unsigned long *freq = arg;
-
- if (*freq < FREQ_LO || *freq > FREQ_HI)
- return -EINVAL;
- card->freq = *freq;
- set_freq(card->io, FREQ2BITS(card->freq));
- msleep(125);
- return 0;
- }
- case VIDIOCGAUDIO: {
- struct video_audio *v = arg;
- memset(v,0,sizeof(*v));
- strcpy(v->name, "Radio");
- v->flags=VIDEO_AUDIO_MUTABLE | card->muted;
- v->mode=VIDEO_SOUND_STEREO;
- return 0;
- }
-
- case VIDIOCSAUDIO: {
- struct video_audio *v = arg;
-
- if(v->audio)
- return -EINVAL;
- card->muted = v->flags & VIDEO_AUDIO_MUTE;
- if(card->muted)
- turn_power(card->io, 0);
- else
- set_freq(card->io, FREQ2BITS(card->freq));
- return 0;
- }
- case VIDIOCGUNIT: {
- struct video_unit *v = arg;
-
- v->video=VIDEO_NO_UNIT;
- v->vbi=VIDEO_NO_UNIT;
- v->radio=dev->minor;
- v->audio=0;
- v->teletext=VIDEO_NO_UNIT;
- return 0;
- }
- default: return -ENOIOCTLCMD;
+ 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;
}
-}
-static int radio_ioctl(struct inode *inode, struct file *file,
- unsigned int cmd, unsigned long arg)
-{
- struct video_device *dev = video_devdata(file);
- struct radio_device *card=dev->priv;
- int ret;
-
- mutex_lock(&card->lock);
- ret = video_usercopy(inode, file, cmd, arg, radio_function);
- mutex_unlock(&card->lock);
- return ret;
-}
-
-MODULE_AUTHOR("Dimitromanolakis Apostolos, apdim@grecian.net");
-MODULE_DESCRIPTION("Radio driver for the Guillemot Maxi Radio FM2000 radio.");
-MODULE_LICENSE("GPL");
+ v4l2_dev = &dev->v4l2_dev;
+ v4l2_device_set_name(v4l2_dev, "maxiradio", &maxiradio_instance);
-
-static int __devinit maxiradio_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
-{
- 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");
- goto err_out;
+ retval = v4l2_device_register(&pdev->dev, v4l2_dev);
+ if (retval < 0) {
+ v4l2_err(v4l2_dev, "Could not register v4l2_device\n");
+ goto errfr;
+ }
+ dev->tea.private_data = dev;
+ dev->tea.ops = &maxiradio_tea_ops;
+ /* The data pin cannot be read. This may be a hardware limitation, or
+ we just don't know how to read it. */
+ dev->tea.cannot_read_data = true;
+ dev->tea.v4l2_dev = v4l2_dev;
+ dev->tea.radio_nr = radio_nr;
+ strlcpy(dev->tea.card, "Maxi Radio FM2000", sizeof(dev->tea.card));
+ snprintf(dev->tea.bus_info, sizeof(dev->tea.bus_info),
+ "PCI:%s", pci_name(pdev));
+
+ retval = -ENODEV;
+
+ if (!request_region(pci_resource_start(pdev, 0),
+ pci_resource_len(pdev, 0), v4l2_dev->name)) {
+ dev_err(&pdev->dev, "can't reserve I/O ports\n");
+ goto err_hdl;
}
if (pci_enable_device(pdev))
goto err_out_free_region;
- radio_unit.io = pci_resource_start(pdev, 0);
- mutex_init(&radio_unit.lock);
- maxiradio_radio.priv = &radio_unit;
-
- if(video_register_device(&maxiradio_radio, VFL_TYPE_RADIO, radio_nr)==-1) {
- printk("radio-maxiradio: can't register device!");
+ dev->io = pci_resource_start(pdev, 0);
+ if (snd_tea575x_init(&dev->tea, THIS_MODULE)) {
+ printk(KERN_ERR "radio-maxiradio: Unable to detect TEA575x tuner\n");
goto err_out_free_region;
}
-
- printk(KERN_INFO "radio-maxiradio: version "
- DRIVER_VERSION
- " time "
- __TIME__ " "
- __DATE__
- "\n");
-
- printk(KERN_INFO "radio-maxiradio: found Guillemot MAXI Radio device (io = 0x%x)\n",
- radio_unit.io);
return 0;
err_out_free_region:
release_region(pci_resource_start(pdev, 0), pci_resource_len(pdev, 0));
-err_out:
- return -ENODEV;
+err_hdl:
+ v4l2_device_unregister(v4l2_dev);
+errfr:
+ kfree(dev);
+ return retval;
}
-static void __devexit maxiradio_remove_one(struct pci_dev *pdev)
+static void maxiradio_remove(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);
+
+ snd_tea575x_exit(&dev->tea);
+ /* Turn off power */
+ outb(0, dev->io);
+ v4l2_device_unregister(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);
@@ -334,19 +196,8 @@ MODULE_DEVICE_TABLE(pci, maxiradio_pci_tbl);
static struct pci_driver maxiradio_driver = {
.name = "radio-maxiradio",
.id_table = maxiradio_pci_tbl,
- .probe = maxiradio_init_one,
- .remove = __devexit_p(maxiradio_remove_one),
+ .probe = maxiradio_probe,
+ .remove = maxiradio_remove,
};
-static int __init maxiradio_radio_init(void)
-{
- return pci_register_driver(&maxiradio_driver);
-}
-
-static void __exit maxiradio_radio_exit(void)
-{
- pci_unregister_driver(&maxiradio_driver);
-}
-
-module_init(maxiradio_radio_init);
-module_exit(maxiradio_radio_exit);
+module_pci_driver(maxiradio_driver);
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