Hi, this is a driver for the Guillemot Maxi Radio FM 2000 PCI radio card. The driver was written for 2.4.0 but hopefully should work on 2.4.1 (unless ReiserFS breaks it :) I was surprised that nobody has written a driver so far. Doesn't anybody listen to radio anymore? Anyway the PCI ids are missing so they are included in the source , probably they should go to pci.h. #define PCI_VENDOR_ID_GUILLEMOT 0x5046 #define PCI_DEVICE_ID_GUILLEMOT_MAXIRADIO 0x1001 Hope this is will be included in the next 2.4.x release.
/* * Guillemot Maxi Radio FM 2000 PCI radio card driver for Linux * (C) 2001 Dimitromanolakis Apostolos <[EMAIL PROTECTED]> * * Based in the radio Maestro PCI driver. Actually it uses the same chip * for radio but different pci controller. * * I didn't have any specs I reversed engineered the protocol from * the windows driver (radio.dll). * * The card uses the TEA5757 chip that includes a search function but it * is useless as I haven't found any way to read back the frequency. If * anybody does please mail me. * * For the pdf file see: * http://www.semiconductors.philips.com/pip/TEA5757H/V1 * */ #include <linux/module.h> #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 <asm/semaphore.h> #include <linux/pci.h> #include <linux/videodev.h> #define DRIVER_VERSION "0.7" #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 /* TEA5757 pin mappings */ const int clk = 1, data = 2, wren = 4, mo_st = 8, power = 16 ; #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) static int radio_open(struct video_device *, int); static int radio_ioctl(struct video_device *, unsigned int, void *); static void radio_close(struct video_device *); /* if anybody knows how to find all the cards from the video_device... */ int found; __u16 io_ports[16]; static struct video_device maxiradio_radio= { name: "Maxi Radio FM2000 radio", type: VID_TYPE_TUNER, hardware: VID_HARDWARE_SF16MI, open: radio_open, close: radio_close, ioctl: radio_ioctl, }; static struct radio_device { __u16 io, /* base of Maestro card radio io (GPIO_DATA)*/ muted, /* VIDEO_AUDIO_MUTE */ stereo, /* VIDEO_TUNER_STEREO_ON */ tuned; /* signal strength (0 or 0xffff) */ unsigned long freq; struct semaphore lock; } radio_unit = {0, 0, 0, 0, }; static void sleep_125ms(void) { current->state = TASK_INTERRUPTIBLE; schedule_timeout(HZ >> 3); } 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); } } static void turn_power(__u16 io, int p) { if(p != 0) outb(power, io); else outb(0,io); } static void set_freq(__u16 io, __u32 data) { unsigned long int si; int bl; /* TEA5757 shift register bits (see pdf) */ 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); } static int get_stereo(__u16 io) { outb(power,io); udelay(2); return !(inb(io) & mo_st); } static int get_tune(__u16 io) { outb(power+clk,io); udelay(2); return !(inb(io) & mo_st); } inline static int radio_function(struct video_device *dev, unsigned int cmd, void *arg) { struct radio_device *card=dev->priv; switch(cmd) { case VIDIOCGCAP: { struct video_capability v; strcpy(v.name, "Maxi Radio FM2000 radio"); v.type=VID_TYPE_TUNER; v.channels=v.audios=1; v.maxwidth=v.maxheight=v.minwidth=v.minheight=0; if(copy_to_user(arg,&v,sizeof(v))) return -EFAULT; return 0; } case VIDIOCGTUNER: { struct video_tuner v; if(copy_from_user(&v, arg,sizeof(v))!=0) return -EFAULT; if(v.tuner) return -EINVAL; card->stereo = get_stereo(card->io); card->tuned = 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; if(copy_to_user(arg,&v, sizeof(v))) return -EFAULT; return 0; } case VIDIOCSTUNER: { struct video_tuner v; if(copy_from_user(&v, arg, sizeof(v))) return -EFAULT; if(v.tuner!=0) return -EINVAL; return 0; } case VIDIOCGFREQ: { unsigned long tmp=card->freq; if(copy_to_user(arg, &tmp, sizeof(tmp))) return -EFAULT; return 0; } case VIDIOCSFREQ: { unsigned long tmp; if(copy_from_user(&tmp, arg, sizeof(tmp))) return -EFAULT; if ( tmp<FREQ_LO || tmp>FREQ_HI ) return -EINVAL; set_freq(card->io, FREQ2BITS(tmp)); sleep_125ms(); return 0; } case VIDIOCGAUDIO: { struct video_audio v; strcpy(v.name, "Radio"); v.audio=v.volume=v.bass=v.treble=v.balance=v.step=0; v.flags=VIDEO_AUDIO_MUTABLE | card->muted; v.mode=VIDEO_SOUND_STEREO; if(copy_to_user(arg,&v, sizeof(v))) return -EFAULT; return 0; } case VIDIOCSAUDIO: { struct video_audio v; if(copy_from_user(&v, arg, sizeof(v))) return -EFAULT; if(v.audio) return -EINVAL; { card->muted = v.flags & VIDEO_AUDIO_MUTE; if(card->muted) turn_power(card->io, 0); else turn_power(card->io, 1); return 0; } } case VIDIOCGUNIT: { struct video_unit v; v.video=VIDEO_NO_UNIT; v.vbi=VIDEO_NO_UNIT; v.radio=dev->minor; v.audio=0; v.teletext=VIDEO_NO_UNIT; if(copy_to_user(arg, &v, sizeof(v))) return -EFAULT; return 0; } default: return -ENOIOCTLCMD; } } static int radio_ioctl(struct video_device *dev, unsigned int cmd, void *arg) { struct radio_device *card=dev->priv; int ret; down(&card->lock); ret = radio_function(dev, cmd, arg); up(&card->lock); return ret; } static int radio_open(struct video_device *dev, int flags) { MOD_INC_USE_COUNT; return 0; } static void radio_close(struct video_device *dev) { MOD_DEC_USE_COUNT; } inline static __u16 radio_install(struct pci_dev *pcidev); MODULE_AUTHOR("Dimitromanolakis Apostolos, [EMAIL PROTECTED]"); MODULE_DESCRIPTION("Radio driver for the Guillemot Maxi Radio FM2000 radio."); EXPORT_NO_SYMBOLS; void __exit maxiradio_radio_exit(void) { int k; video_unregister_device(&maxiradio_radio); for(k=0;k<found;k++) release_region(io_ports[k],4); } int __init maxiradio_radio_init(void) { struct pci_dev *pcidev = NULL; if(!pci_present()) return -ENODEV; found = 0; while((pcidev = pci_find_device(PCI_VENDOR_ID_GUILLEMOT, PCI_DEVICE_ID_GUILLEMOT_MAXIRADIO, pcidev))) found += radio_install(pcidev); if(found == 0) { printk(KERN_INFO "radio-maxiradio: no devices found.\n"); return -ENODEV; } printk(KERN_INFO "radio-maxiradio: %d device(s) found.\n",found); return 0; } module_init(maxiradio_radio_init); module_exit(maxiradio_radio_exit); inline static __u16 radio_install(struct pci_dev *pcidev) { radio_unit.io = pcidev->resource[0].start; pci_enable_device(pcidev); maxiradio_radio.priv = &radio_unit; init_MUTEX(&radio_unit.lock); if(video_register_device(&maxiradio_radio, VFL_TYPE_RADIO)==-1) { printk("radio-maxiradio: can't register device!"); return 0; } 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 ); if(!request_region(radio_unit.io, 4, "Maxi Radio FM 2000")) { printk(KERN_ERR "radio-maxiradio: port 0x%x already in use\n", radio_unit.io); return 0; } io_ports[found] = radio_unit.io; return 1; }
