| /* Terratec ActiveRadio ISA Standalone card driver for Linux radio support |
| * (c) 1999 R. Offermanns (rolf@offermanns.de) |
| * based on the aimslab radio driver from M. Kirkwood |
| * many thanks to Michael Becker and Friedhelm Birth (from TerraTec) |
| * |
| * |
| * History: |
| * 1999-05-21 First preview release |
| * |
| * Notes on the hardware: |
| * There are two "main" chips on the card: |
| * - Philips OM5610 (http://www-us.semiconductors.philips.com/acrobat/datasheets/OM5610_2.pdf) |
| * - Philips SAA6588 (http://www-us.semiconductors.philips.com/acrobat/datasheets/SAA6588_1.pdf) |
| * (you can get the datasheet at the above links) |
| * |
| * Frequency control is done digitally -- ie out(port,encodefreq(95.8)); |
| * Volume Control is done digitally |
| * |
| * there is a I2C controlled RDS decoder (SAA6588) onboard, which i would like to support someday |
| * (as soon i have understand how to get started :) |
| * If you can help me out with that, please contact me!! |
| * |
| * |
| * Converted to V4L2 API by Mauro Carvalho Chehab <mchehab@infradead.org> |
| */ |
| |
| #include <linux/module.h> /* Modules */ |
| #include <linux/init.h> /* Initdata */ |
| #include <linux/ioport.h> /* request_region */ |
| #include <linux/delay.h> /* udelay */ |
| #include <asm/io.h> /* outb, outb_p */ |
| #include <asm/uaccess.h> /* copy to/from user */ |
| #include <linux/videodev2.h> /* kernel radio structs */ |
| #include <media/v4l2-common.h> |
| #include <media/v4l2-ioctl.h> |
| #include <linux/spinlock.h> |
| |
| #include <linux/version.h> /* for KERNEL_VERSION MACRO */ |
| #define RADIO_VERSION KERNEL_VERSION(0,0,2) |
| |
| 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, |
| },{ |
| .id = V4L2_CID_AUDIO_VOLUME, |
| .name = "Volume", |
| .minimum = 0, |
| .maximum = 0xff, |
| .step = 1, |
| .default_value = 0xff, |
| .type = V4L2_CTRL_TYPE_INTEGER, |
| } |
| }; |
| |
| #ifndef CONFIG_RADIO_TERRATEC_PORT |
| #define CONFIG_RADIO_TERRATEC_PORT 0x590 |
| #endif |
| |
| /**************** this ones are for the terratec *******************/ |
| #define BASEPORT 0x590 |
| #define VOLPORT 0x591 |
| #define WRT_DIS 0x00 |
| #define CLK_OFF 0x00 |
| #define IIC_DATA 0x01 |
| #define IIC_CLK 0x02 |
| #define DATA 0x04 |
| #define CLK_ON 0x08 |
| #define WRT_EN 0x10 |
| /*******************************************************************/ |
| |
| static int io = CONFIG_RADIO_TERRATEC_PORT; |
| static int radio_nr = -1; |
| static spinlock_t lock; |
| |
| struct tt_device |
| { |
| int port; |
| int curvol; |
| unsigned long curfreq; |
| int muted; |
| }; |
| |
| |
| /* local things */ |
| |
| static void cardWriteVol(int volume) |
| { |
| int i; |
| volume = volume+(volume * 32); // change both channels |
| spin_lock(&lock); |
| for (i=0;i<8;i++) |
| { |
| if (volume & (0x80>>i)) |
| outb(0x80, VOLPORT); |
| else outb(0x00, VOLPORT); |
| } |
| spin_unlock(&lock); |
| } |
| |
| |
| |
| static void tt_mute(struct tt_device *dev) |
| { |
| dev->muted = 1; |
| cardWriteVol(0); |
| } |
| |
| static int tt_setvol(struct tt_device *dev, int vol) |
| { |
| |
| // printk(KERN_ERR "setvol called, vol = %d\n", vol); |
| |
| if(vol == dev->curvol) { /* requested volume = current */ |
| if (dev->muted) { /* user is unmuting the card */ |
| dev->muted = 0; |
| cardWriteVol(vol); /* enable card */ |
| } |
| |
| return 0; |
| } |
| |
| if(vol == 0) { /* volume = 0 means mute the card */ |
| cardWriteVol(0); /* "turn off card" by setting vol to 0 */ |
| dev->curvol = vol; /* track the volume state! */ |
| return 0; |
| } |
| |
| dev->muted = 0; |
| |
| cardWriteVol(vol); |
| |
| dev->curvol = vol; |
| |
| return 0; |
| |
| } |
| |
| |
| /* this is the worst part in this driver */ |
| /* many more or less strange things are going on here, but hey, it works :) */ |
| |
| static int tt_setfreq(struct tt_device *dev, unsigned long freq1) |
| { |
| int freq; |
| int i; |
| int p; |
| int temp; |
| long rest; |
| |
| unsigned char buffer[25]; /* we have to bit shift 25 registers */ |
| freq = freq1/160; /* convert the freq. to a nice to handle value */ |
| for(i=24;i>-1;i--) |
| buffer[i]=0; |
| |
| rest = freq*10+10700; /* i once had understood what is going on here */ |
| /* maybe some wise guy (friedhelm?) can comment this stuff */ |
| i=13; |
| p=10; |
| temp=102400; |
| while (rest!=0) |
| { |
| if (rest%temp == rest) |
| buffer[i] = 0; |
| else |
| { |
| buffer[i] = 1; |
| rest = rest-temp; |
| } |
| i--; |
| p--; |
| temp = temp/2; |
| } |
| |
| spin_lock(&lock); |
| |
| for (i=24;i>-1;i--) /* bit shift the values to the radiocard */ |
| { |
| if (buffer[i]==1) |
| { |
| outb(WRT_EN|DATA, BASEPORT); |
| outb(WRT_EN|DATA|CLK_ON , BASEPORT); |
| outb(WRT_EN|DATA, BASEPORT); |
| } |
| else |
| { |
| outb(WRT_EN|0x00, BASEPORT); |
| outb(WRT_EN|0x00|CLK_ON , BASEPORT); |
| } |
| } |
| outb(0x00, BASEPORT); |
| |
| spin_unlock(&lock); |
| |
| return 0; |
| } |
| |
| static int tt_getsigstr(struct tt_device *dev) /* TODO */ |
| { |
| if (inb(io) & 2) /* bit set = no signal present */ |
| return 0; |
| return 1; /* signal present */ |
| } |
| |
| static int vidioc_querycap(struct file *file, void *priv, |
| struct v4l2_capability *v) |
| { |
| strlcpy(v->driver, "radio-terratec", sizeof(v->driver)); |
| strlcpy(v->card, "ActiveRadio", 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 tt_device *tt = dev->priv; |
| |
| if (v->index > 0) |
| return -EINVAL; |
| |
| strcpy(v->name, "FM"); |
| v->type = V4L2_TUNER_RADIO; |
| v->rangelow = (87*16000); |
| v->rangehigh = (108*16000); |
| v->rxsubchans = V4L2_TUNER_SUB_MONO; |
| v->capability = V4L2_TUNER_CAP_LOW; |
| v->audmode = V4L2_TUNER_MODE_MONO; |
| v->signal = 0xFFFF*tt_getsigstr(tt); |
| 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_s_frequency(struct file *file, void *priv, |
| struct v4l2_frequency *f) |
| { |
| struct video_device *dev = video_devdata(file); |
| struct tt_device *tt = dev->priv; |
| |
| tt->curfreq = f->frequency; |
| tt_setfreq(tt, tt->curfreq); |
| return 0; |
| } |
| |
| static int vidioc_g_frequency(struct file *file, void *priv, |
| struct v4l2_frequency *f) |
| { |
| struct video_device *dev = video_devdata(file); |
| struct tt_device *tt = dev->priv; |
| |
| f->type = V4L2_TUNER_RADIO; |
| f->frequency = tt->curfreq; |
| 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 tt_device *tt = dev->priv; |
| |
| switch (ctrl->id) { |
| case V4L2_CID_AUDIO_MUTE: |
| if (tt->muted) |
| ctrl->value = 1; |
| else |
| ctrl->value = 0; |
| return 0; |
| case V4L2_CID_AUDIO_VOLUME: |
| ctrl->value = tt->curvol * 6554; |
| 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 tt_device *tt = dev->priv; |
| |
| switch (ctrl->id) { |
| case V4L2_CID_AUDIO_MUTE: |
| if (ctrl->value) |
| tt_mute(tt); |
| else |
| tt_setvol(tt,tt->curvol); |
| return 0; |
| case V4L2_CID_AUDIO_VOLUME: |
| tt_setvol(tt,ctrl->value); |
| return 0; |
| } |
| return -EINVAL; |
| } |
| |
| static int vidioc_g_audio(struct file *file, void *priv, |
| struct v4l2_audio *a) |
| { |
| if (a->index > 1) |
| return -EINVAL; |
| |
| strcpy(a->name, "Radio"); |
| 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 struct tt_device terratec_unit; |
| |
| static const struct file_operations terratec_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 const struct v4l2_ioctl_ops terratec_ioctl_ops = { |
| .vidioc_querycap = vidioc_querycap, |
| .vidioc_g_tuner = vidioc_g_tuner, |
| .vidioc_s_tuner = vidioc_s_tuner, |
| .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, |
| .vidioc_g_audio = vidioc_g_audio, |
| .vidioc_s_audio = vidioc_s_audio, |
| .vidioc_g_input = vidioc_g_input, |
| .vidioc_s_input = vidioc_s_input, |
| }; |
| |
| static struct video_device terratec_radio = { |
| .name = "TerraTec ActiveRadio", |
| .fops = &terratec_fops, |
| .ioctl_ops = &terratec_ioctl_ops, |
| }; |
| |
| static int __init terratec_init(void) |
| { |
| if(io==-1) |
| { |
| printk(KERN_ERR "You must set an I/O address with io=0x???\n"); |
| return -EINVAL; |
| } |
| if (!request_region(io, 2, "terratec")) |
| { |
| printk(KERN_ERR "TerraTec: port 0x%x already in use\n", io); |
| return -EBUSY; |
| } |
| |
| terratec_radio.priv=&terratec_unit; |
| |
| spin_lock_init(&lock); |
| |
| if(video_register_device(&terratec_radio, VFL_TYPE_RADIO, radio_nr)==-1) |
| { |
| release_region(io,2); |
| return -EINVAL; |
| } |
| |
| printk(KERN_INFO "TERRATEC ActivRadio Standalone card driver.\n"); |
| |
| /* mute card - prevents noisy bootups */ |
| |
| /* this ensures that the volume is all the way down */ |
| cardWriteVol(0); |
| terratec_unit.curvol = 0; |
| |
| return 0; |
| } |
| |
| MODULE_AUTHOR("R.OFFERMANNS & others"); |
| MODULE_DESCRIPTION("A driver for the TerraTec ActiveRadio Standalone radio card."); |
| MODULE_LICENSE("GPL"); |
| module_param(io, int, 0); |
| MODULE_PARM_DESC(io, "I/O address of the TerraTec ActiveRadio card (0x590 or 0x591)"); |
| module_param(radio_nr, int, 0); |
| |
| static void __exit terratec_cleanup_module(void) |
| { |
| video_unregister_device(&terratec_radio); |
| release_region(io,2); |
| printk(KERN_INFO "TERRATEC ActivRadio Standalone card driver unloaded.\n"); |
| } |
| |
| module_init(terratec_init); |
| module_exit(terratec_cleanup_module); |
| |