forked from luck/tmp_suning_uos_patched
0d0fbf8152
This moves the 32 bit ioctl compatibility handlers for Video4Linux into a new file and adds explicit calls to them to each v4l device driver. Unfortunately, there does not seem to be any code handling the v4l2 ioctls, so quite often the code goes through two separate conversions, first from 32 bit v4l to 64 bit v4l, and from there to 64 bit v4l2. My patch does not change that, so there is still much room for improvement. Also, some drivers have additional ioctl numbers, for which the conversion should be handled internally to that driver. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Mauro Carvalho Chehab <mchehab@brturbo.com.br>
351 lines
8.1 KiB
C
351 lines
8.1 KiB
C
/*
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* Guillemot Maxi Radio FM 2000 PCI radio card driver for Linux
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* (C) 2001 Dimitromanolakis Apostolos <apdim@grecian.net>
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*
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* Based in the radio Maestro PCI driver. Actually it uses the same chip
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* for radio but different pci controller.
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*
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* I didn't have any specs I reversed engineered the protocol from
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* the windows driver (radio.dll).
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*
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* The card uses the TEA5757 chip that includes a search function but it
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* is useless as I haven't found any way to read back the frequency. If
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* anybody does please mail me.
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*
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* For the pdf file see:
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* http://www.semiconductors.philips.com/pip/TEA5757H/V1
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*
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*
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* CHANGES:
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* 0.75b
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* - better pci interface thanks to Francois Romieu <romieu@cogenit.fr>
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*
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* 0.75
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* - tiding up
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* - removed support for multiple devices as it didn't work anyway
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*
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* BUGS:
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* - card unmutes if you change frequency
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*
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*/
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/ioport.h>
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#include <linux/delay.h>
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#include <linux/sched.h>
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#include <asm/io.h>
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#include <asm/uaccess.h>
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#include <asm/semaphore.h>
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#include <linux/pci.h>
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#include <linux/videodev.h>
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/* version 0.75 Sun Feb 4 22:51:27 EET 2001 */
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#define DRIVER_VERSION "0.75"
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#ifndef PCI_VENDOR_ID_GUILLEMOT
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#define PCI_VENDOR_ID_GUILLEMOT 0x5046
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#endif
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#ifndef PCI_DEVICE_ID_GUILLEMOT
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#define PCI_DEVICE_ID_GUILLEMOT_MAXIRADIO 0x1001
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#endif
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/* TEA5757 pin mappings */
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static const int clk = 1, data = 2, wren = 4, mo_st = 8, power = 16 ;
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static int radio_nr = -1;
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module_param(radio_nr, int, 0);
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#define FREQ_LO 50*16000
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#define FREQ_HI 150*16000
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#define FREQ_IF 171200 /* 10.7*16000 */
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#define FREQ_STEP 200 /* 12.5*16 */
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#define FREQ2BITS(x) ((( (unsigned int)(x)+FREQ_IF+(FREQ_STEP<<1))\
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/(FREQ_STEP<<2))<<2) /* (x==fmhz*16*1000) -> bits */
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#define BITS2FREQ(x) ((x) * FREQ_STEP - FREQ_IF)
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static int radio_ioctl(struct inode *inode, struct file *file,
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unsigned int cmd, unsigned long arg);
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static struct file_operations maxiradio_fops = {
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.owner = THIS_MODULE,
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.open = video_exclusive_open,
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.release = video_exclusive_release,
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.ioctl = radio_ioctl,
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.compat_ioctl = v4l_compat_ioctl32,
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.llseek = no_llseek,
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};
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static struct video_device maxiradio_radio =
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{
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.owner = THIS_MODULE,
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.name = "Maxi Radio FM2000 radio",
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.type = VID_TYPE_TUNER,
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.hardware = VID_HARDWARE_SF16MI,
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.fops = &maxiradio_fops,
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};
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static struct radio_device
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{
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__u16 io, /* base of radio io */
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muted, /* VIDEO_AUDIO_MUTE */
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stereo, /* VIDEO_TUNER_STEREO_ON */
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tuned; /* signal strength (0 or 0xffff) */
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unsigned long freq;
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struct semaphore lock;
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} radio_unit = {0, 0, 0, 0, };
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static void outbit(unsigned long bit, __u16 io)
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{
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if(bit != 0)
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{
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outb( power|wren|data ,io); udelay(4);
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outb( power|wren|data|clk ,io); udelay(4);
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outb( power|wren|data ,io); udelay(4);
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}
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else
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{
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outb( power|wren ,io); udelay(4);
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outb( power|wren|clk ,io); udelay(4);
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outb( power|wren ,io); udelay(4);
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}
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}
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static void turn_power(__u16 io, int p)
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{
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if(p != 0) outb(power, io); else outb(0,io);
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}
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static void set_freq(__u16 io, __u32 data)
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{
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unsigned long int si;
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int bl;
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/* TEA5757 shift register bits (see pdf) */
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outbit(0,io); // 24 search
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outbit(1,io); // 23 search up/down
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outbit(0,io); // 22 stereo/mono
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outbit(0,io); // 21 band
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outbit(0,io); // 20 band (only 00=FM works I think)
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outbit(0,io); // 19 port ?
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outbit(0,io); // 18 port ?
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outbit(0,io); // 17 search level
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outbit(0,io); // 16 search level
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si = 0x8000;
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for(bl = 1; bl <= 16 ; bl++) { outbit(data & si,io); si >>=1; }
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outb(power,io);
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}
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static int get_stereo(__u16 io)
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{
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outb(power,io); udelay(4);
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return !(inb(io) & mo_st);
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}
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static int get_tune(__u16 io)
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{
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outb(power+clk,io); udelay(4);
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return !(inb(io) & mo_st);
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}
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static inline int radio_function(struct inode *inode, struct file *file,
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unsigned int cmd, void *arg)
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{
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struct video_device *dev = video_devdata(file);
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struct radio_device *card=dev->priv;
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switch(cmd) {
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case VIDIOCGCAP: {
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struct video_capability *v = arg;
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memset(v,0,sizeof(*v));
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strcpy(v->name, "Maxi Radio FM2000 radio");
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v->type=VID_TYPE_TUNER;
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v->channels=v->audios=1;
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return 0;
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}
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case VIDIOCGTUNER: {
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struct video_tuner *v = arg;
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if(v->tuner)
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return -EINVAL;
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card->stereo = 0xffff * get_stereo(card->io);
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card->tuned = 0xffff * get_tune(card->io);
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v->flags = VIDEO_TUNER_LOW | card->stereo;
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v->signal = card->tuned;
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strcpy(v->name, "FM");
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v->rangelow = FREQ_LO;
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v->rangehigh = FREQ_HI;
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v->mode = VIDEO_MODE_AUTO;
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return 0;
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}
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case VIDIOCSTUNER: {
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struct video_tuner *v = arg;
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if(v->tuner!=0)
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return -EINVAL;
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return 0;
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}
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case VIDIOCGFREQ: {
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unsigned long *freq = arg;
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*freq = card->freq;
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return 0;
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}
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case VIDIOCSFREQ: {
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unsigned long *freq = arg;
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if (*freq < FREQ_LO || *freq > FREQ_HI)
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return -EINVAL;
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card->freq = *freq;
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set_freq(card->io, FREQ2BITS(card->freq));
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msleep(125);
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return 0;
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}
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case VIDIOCGAUDIO: {
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struct video_audio *v = arg;
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memset(v,0,sizeof(*v));
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strcpy(v->name, "Radio");
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v->flags=VIDEO_AUDIO_MUTABLE | card->muted;
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v->mode=VIDEO_SOUND_STEREO;
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return 0;
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}
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case VIDIOCSAUDIO: {
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struct video_audio *v = arg;
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if(v->audio)
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return -EINVAL;
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card->muted = v->flags & VIDEO_AUDIO_MUTE;
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if(card->muted)
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turn_power(card->io, 0);
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else
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set_freq(card->io, FREQ2BITS(card->freq));
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return 0;
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}
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case VIDIOCGUNIT: {
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struct video_unit *v = arg;
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v->video=VIDEO_NO_UNIT;
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v->vbi=VIDEO_NO_UNIT;
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v->radio=dev->minor;
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v->audio=0;
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v->teletext=VIDEO_NO_UNIT;
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return 0;
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}
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default: return -ENOIOCTLCMD;
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}
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}
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static int radio_ioctl(struct inode *inode, struct file *file,
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unsigned int cmd, unsigned long arg)
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{
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struct video_device *dev = video_devdata(file);
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struct radio_device *card=dev->priv;
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int ret;
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down(&card->lock);
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ret = video_usercopy(inode, file, cmd, arg, radio_function);
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up(&card->lock);
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return ret;
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}
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MODULE_AUTHOR("Dimitromanolakis Apostolos, apdim@grecian.net");
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MODULE_DESCRIPTION("Radio driver for the Guillemot Maxi Radio FM2000 radio.");
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MODULE_LICENSE("GPL");
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static int __devinit maxiradio_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
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{
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if(!request_region(pci_resource_start(pdev, 0),
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pci_resource_len(pdev, 0), "Maxi Radio FM 2000")) {
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printk(KERN_ERR "radio-maxiradio: can't reserve I/O ports\n");
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goto err_out;
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}
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if (pci_enable_device(pdev))
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goto err_out_free_region;
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radio_unit.io = pci_resource_start(pdev, 0);
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init_MUTEX(&radio_unit.lock);
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maxiradio_radio.priv = &radio_unit;
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if(video_register_device(&maxiradio_radio, VFL_TYPE_RADIO, radio_nr)==-1) {
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printk("radio-maxiradio: can't register device!");
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goto err_out_free_region;
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}
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printk(KERN_INFO "radio-maxiradio: version "
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DRIVER_VERSION
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" time "
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__TIME__ " "
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__DATE__
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"\n");
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printk(KERN_INFO "radio-maxiradio: found Guillemot MAXI Radio device (io = 0x%x)\n",
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radio_unit.io);
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return 0;
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err_out_free_region:
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release_region(pci_resource_start(pdev, 0), pci_resource_len(pdev, 0));
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err_out:
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return -ENODEV;
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}
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static void __devexit maxiradio_remove_one(struct pci_dev *pdev)
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{
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video_unregister_device(&maxiradio_radio);
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release_region(pci_resource_start(pdev, 0), pci_resource_len(pdev, 0));
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}
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static struct pci_device_id maxiradio_pci_tbl[] = {
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{ PCI_VENDOR_ID_GUILLEMOT, PCI_DEVICE_ID_GUILLEMOT_MAXIRADIO,
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PCI_ANY_ID, PCI_ANY_ID, },
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{ 0,}
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};
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MODULE_DEVICE_TABLE(pci, maxiradio_pci_tbl);
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static struct pci_driver maxiradio_driver = {
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.name = "radio-maxiradio",
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.id_table = maxiradio_pci_tbl,
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.probe = maxiradio_init_one,
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.remove = __devexit_p(maxiradio_remove_one),
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};
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static int __init maxiradio_radio_init(void)
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{
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return pci_module_init(&maxiradio_driver);
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}
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static void __exit maxiradio_radio_exit(void)
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{
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pci_unregister_driver(&maxiradio_driver);
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}
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module_init(maxiradio_radio_init);
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module_exit(maxiradio_radio_exit);
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