/* * Guillemot Maxi Radio FM 2000 PCI radio card driver for Linux * (C) 2001 Dimitromanolakis Apostolos * * 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 * * * CHANGES: * 0.75b * - better pci interface thanks to Francois Romieu * * 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 : * - Conversion to V4L2 API * - Uses video_ioctl2 for parsing and to add debug support */ #include #include #include #include #include #include #include #include #include #include #include #define DRIVER_VERSION "0.77" #include /* 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, } }; #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 */ 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); #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 BITS2FREQ(x) ((x) * FREQ_STEP - FREQ_IF) static const struct file_operations maxiradio_fops = { .owner = THIS_MODULE, .open = video_exclusive_open, .release = video_exclusive_release, .ioctl = video_ioctl2, #ifdef CONFIG_COMPAT .compat_ioctl = v4l_compat_ioctl32, #endif .llseek = no_llseek, }; 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) */ unsigned long freq; struct mutex lock; } radio_unit = { .muted =1, .freq = FREQ_LO, }; 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) { dprintk(1, "Radio powered on\n"); outb(power, io); } else { dprintk(1, "Radio powered off\n"); outb(0,io); } } static void set_freq(__u16 io, __u32 freq) { unsigned long int si; int bl; int val = FREQ2BITS(freq); /* 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(val & si, io); si >>= 1; } dprintk(1, "Radio freq set to %d.%02d MHz\n", freq / 16000, freq % 16000 * 100 / 16000); turn_power(io, 1); } static int get_stereo(__u16 io) { outb(power,io); udelay(4); return !(inb(io) & mo_st); } static int get_tune(__u16 io) { outb(power+clk,io); udelay(4); return !(inb(io) & mo_st); } 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; return 0; } static int vidioc_g_tuner (struct file *file, void *priv, struct v4l2_tuner *v) { struct video_device *dev = video_devdata(file); struct radio_device *card=dev->priv; if (v->index > 0) return -EINVAL; memset(v,0,sizeof(*v)); strcpy(v->name, "FM"); 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->audmode = V4L2_TUNER_MODE_STEREO; else v->audmode = V4L2_TUNER_MODE_MONO; v->signal=0xffff*get_tune(card->io); return 0; } 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; } 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 0; } static int vidioc_s_audio (struct file *file, void *priv, struct v4l2_audio *a) { if (a->index != 0) return -EINVAL; return 0; } static int vidioc_s_frequency (struct file *file, void *priv, struct v4l2_frequency *f) { struct video_device *dev = video_devdata(file); struct radio_device *card=dev->priv; if (f->frequency < FREQ_LO || f->frequency > FREQ_HI) { dprintk(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); msleep(125); return 0; } static int vidioc_g_frequency (struct file *file, void *priv, struct v4l2_frequency *f) { struct video_device *dev = video_devdata(file); struct radio_device *card=dev->priv; f->type = V4L2_TUNER_RADIO; f->frequency = card->freq; dprintk(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, 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); } } return -EINVAL; } static int vidioc_g_ctrl (struct file *file, void *priv, struct v4l2_control *ctrl) { struct video_device *dev = video_devdata(file); struct radio_device *card=dev->priv; switch (ctrl->id) { case V4L2_CID_AUDIO_MUTE: ctrl->value=card->muted; return (0); } return -EINVAL; } static int vidioc_s_ctrl (struct file *file, void *priv, struct v4l2_control *ctrl) { struct video_device *dev = video_devdata(file); struct radio_device *card=dev->priv; 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; } return -EINVAL; } static const struct v4l2_ioctl_ops maxiradio_ioctl_ops = { .vidioc_querycap = vidioc_querycap, .vidioc_g_tuner = vidioc_g_tuner, .vidioc_s_tuner = vidioc_s_tuner, .vidioc_g_audio = vidioc_g_audio, .vidioc_s_audio = vidioc_s_audio, .vidioc_g_input = vidioc_g_input, .vidioc_s_input = vidioc_s_input, .vidioc_g_frequency = vidioc_g_frequency, .vidioc_s_frequency = vidioc_s_frequency, .vidioc_queryctrl = vidioc_queryctrl, .vidioc_g_ctrl = vidioc_g_ctrl, .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, }; 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; } 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!"); 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; } static void __devexit maxiradio_remove_one(struct pci_dev *pdev) { video_unregister_device(&maxiradio_radio); 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,} }; 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), }; 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_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");