1 /* RadioTrack II driver for Linux radio support (C) 1998 Ben Pfaff
3 * Based on RadioTrack I/RadioReveal (C) 1997 M. Kirkwood
4 * Converted to new API by Alan Cox <Alan.Cox@linux.org>
5 * Various bugfixes and enhancements by Russell Kroll <rkroll@exploits.org>
7 * TODO: Allow for more than one of these foolish entities :-)
9 * Converted to V4L2 API by Mauro Carvalho Chehab <mchehab@infradead.org>
12 #include <linux/module.h> /* Modules */
13 #include <linux/init.h> /* Initdata */
14 #include <linux/ioport.h> /* request_region */
15 #include <linux/delay.h> /* udelay */
16 #include <asm/io.h> /* outb, outb_p */
17 #include <asm/uaccess.h> /* copy to/from user */
18 #include <linux/videodev2.h> /* kernel radio structs */
19 #include <media/v4l2-common.h>
20 #include <linux/spinlock.h>
22 #include <linux/version.h> /* for KERNEL_VERSION MACRO */
23 #define RADIO_VERSION KERNEL_VERSION(0,0,2)
25 static struct v4l2_queryctrl radio_qctrl[] = {
27 .id = V4L2_CID_AUDIO_MUTE,
32 .type = V4L2_CTRL_TYPE_BOOLEAN,
34 .id = V4L2_CID_AUDIO_VOLUME,
39 .default_value = 0xff,
40 .type = V4L2_CTRL_TYPE_INTEGER,
44 #ifndef CONFIG_RADIO_RTRACK2_PORT
45 #define CONFIG_RADIO_RTRACK2_PORT -1
48 static int io = CONFIG_RADIO_RTRACK2_PORT;
49 static int radio_nr = -1;
50 static spinlock_t lock;
55 unsigned long curfreq;
62 static void rt_mute(struct rt_device *dev)
72 static void rt_unmute(struct rt_device *dev)
82 static void zero(void)
96 static int rt_setfreq(struct rt_device *dev, unsigned long freq)
100 freq = freq / 200 + 856;
108 for (i = 0; i < 10; i++)
111 for (i = 14; i >= 0; i--)
125 static int vidioc_querycap(struct file *file, void *priv,
126 struct v4l2_capability *v)
128 strlcpy(v->driver, "radio-rtrack2", sizeof(v->driver));
129 strlcpy(v->card, "RadioTrack II", sizeof(v->card));
130 sprintf(v->bus_info, "ISA");
131 v->version = RADIO_VERSION;
132 v->capabilities = V4L2_CAP_TUNER;
136 static int vidioc_s_tuner(struct file *file, void *priv,
137 struct v4l2_tuner *v)
145 static int rt_getsigstr(struct rt_device *dev)
147 if (inb(io) & 2) /* bit set = no signal present */
149 return 1; /* signal present */
152 static int vidioc_g_tuner(struct file *file, void *priv,
153 struct v4l2_tuner *v)
155 struct video_device *dev = video_devdata(file);
156 struct rt_device *rt = dev->priv;
161 strcpy(v->name, "FM");
162 v->type = V4L2_TUNER_RADIO;
163 v->rangelow = (88*16000);
164 v->rangehigh = (108*16000);
165 v->rxsubchans = V4L2_TUNER_SUB_MONO;
166 v->capability = V4L2_TUNER_CAP_LOW;
167 v->audmode = V4L2_TUNER_MODE_MONO;
168 v->signal = 0xFFFF*rt_getsigstr(rt);
172 static int vidioc_s_frequency(struct file *file, void *priv,
173 struct v4l2_frequency *f)
175 struct video_device *dev = video_devdata(file);
176 struct rt_device *rt = dev->priv;
178 rt->curfreq = f->frequency;
179 rt_setfreq(rt, rt->curfreq);
183 static int vidioc_g_frequency(struct file *file, void *priv,
184 struct v4l2_frequency *f)
186 struct video_device *dev = video_devdata(file);
187 struct rt_device *rt = dev->priv;
189 f->type = V4L2_TUNER_RADIO;
190 f->frequency = rt->curfreq;
194 static int vidioc_queryctrl(struct file *file, void *priv,
195 struct v4l2_queryctrl *qc)
199 for (i = 0; i < ARRAY_SIZE(radio_qctrl); i++) {
200 if (qc->id && qc->id == radio_qctrl[i].id) {
201 memcpy(qc, &(radio_qctrl[i]),
209 static int vidioc_g_ctrl(struct file *file, void *priv,
210 struct v4l2_control *ctrl)
212 struct video_device *dev = video_devdata(file);
213 struct rt_device *rt = dev->priv;
216 case V4L2_CID_AUDIO_MUTE:
217 ctrl->value = rt->muted;
219 case V4L2_CID_AUDIO_VOLUME:
229 static int vidioc_s_ctrl(struct file *file, void *priv,
230 struct v4l2_control *ctrl)
232 struct video_device *dev = video_devdata(file);
233 struct rt_device *rt = dev->priv;
236 case V4L2_CID_AUDIO_MUTE:
242 case V4L2_CID_AUDIO_VOLUME:
252 static int vidioc_g_audio(struct file *file, void *priv,
253 struct v4l2_audio *a)
258 strcpy(a->name, "Radio");
259 a->capability = V4L2_AUDCAP_STEREO;
263 static int vidioc_g_input(struct file *filp, void *priv, unsigned int *i)
269 static int vidioc_s_input(struct file *filp, void *priv, unsigned int i)
276 static int vidioc_s_audio(struct file *file, void *priv,
277 struct v4l2_audio *a)
284 static struct rt_device rtrack2_unit;
286 static const struct file_operations rtrack2_fops = {
287 .owner = THIS_MODULE,
288 .open = video_exclusive_open,
289 .release = video_exclusive_release,
290 .ioctl = video_ioctl2,
292 .compat_ioctl = v4l_compat_ioctl32,
297 static struct video_device rtrack2_radio=
299 .owner = THIS_MODULE,
300 .name = "RadioTrack II radio",
301 .type = VID_TYPE_TUNER,
302 .fops = &rtrack2_fops,
303 .vidioc_querycap = vidioc_querycap,
304 .vidioc_g_tuner = vidioc_g_tuner,
305 .vidioc_s_tuner = vidioc_s_tuner,
306 .vidioc_g_frequency = vidioc_g_frequency,
307 .vidioc_s_frequency = vidioc_s_frequency,
308 .vidioc_queryctrl = vidioc_queryctrl,
309 .vidioc_g_ctrl = vidioc_g_ctrl,
310 .vidioc_s_ctrl = vidioc_s_ctrl,
311 .vidioc_g_audio = vidioc_g_audio,
312 .vidioc_s_audio = vidioc_s_audio,
313 .vidioc_g_input = vidioc_g_input,
314 .vidioc_s_input = vidioc_s_input,
317 static int __init rtrack2_init(void)
321 printk(KERN_ERR "You must set an I/O address with io=0x20c or io=0x30c\n");
324 if (!request_region(io, 4, "rtrack2"))
326 printk(KERN_ERR "rtrack2: port 0x%x already in use\n", io);
330 rtrack2_radio.priv=&rtrack2_unit;
332 spin_lock_init(&lock);
333 if(video_register_device(&rtrack2_radio, VFL_TYPE_RADIO, radio_nr)==-1)
335 release_region(io, 4);
339 printk(KERN_INFO "AIMSlab Radiotrack II card driver.\n");
341 /* mute card - prevents noisy bootups */
343 rtrack2_unit.muted = 1;
348 MODULE_AUTHOR("Ben Pfaff");
349 MODULE_DESCRIPTION("A driver for the RadioTrack II radio card.");
350 MODULE_LICENSE("GPL");
352 module_param(io, int, 0);
353 MODULE_PARM_DESC(io, "I/O address of the RadioTrack card (0x20c or 0x30c)");
354 module_param(radio_nr, int, 0);
356 static void __exit rtrack2_cleanup_module(void)
358 video_unregister_device(&rtrack2_radio);
359 release_region(io,4);
362 module_init(rtrack2_init);
363 module_exit(rtrack2_cleanup_module);
367 compile-command: "mmake"