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
,
291 .compat_ioctl
= v4l_compat_ioctl32
,
295 static struct video_device rtrack2_radio
=
297 .owner
= THIS_MODULE
,
298 .name
= "RadioTrack II radio",
299 .type
= VID_TYPE_TUNER
,
300 .fops
= &rtrack2_fops
,
301 .vidioc_querycap
= vidioc_querycap
,
302 .vidioc_g_tuner
= vidioc_g_tuner
,
303 .vidioc_s_tuner
= vidioc_s_tuner
,
304 .vidioc_g_frequency
= vidioc_g_frequency
,
305 .vidioc_s_frequency
= vidioc_s_frequency
,
306 .vidioc_queryctrl
= vidioc_queryctrl
,
307 .vidioc_g_ctrl
= vidioc_g_ctrl
,
308 .vidioc_s_ctrl
= vidioc_s_ctrl
,
309 .vidioc_g_audio
= vidioc_g_audio
,
310 .vidioc_s_audio
= vidioc_s_audio
,
311 .vidioc_g_input
= vidioc_g_input
,
312 .vidioc_s_input
= vidioc_s_input
,
315 static int __init
rtrack2_init(void)
319 printk(KERN_ERR
"You must set an I/O address with io=0x20c or io=0x30c\n");
322 if (!request_region(io
, 4, "rtrack2"))
324 printk(KERN_ERR
"rtrack2: port 0x%x already in use\n", io
);
328 rtrack2_radio
.priv
=&rtrack2_unit
;
330 spin_lock_init(&lock
);
331 if(video_register_device(&rtrack2_radio
, VFL_TYPE_RADIO
, radio_nr
)==-1)
333 release_region(io
, 4);
337 printk(KERN_INFO
"AIMSlab Radiotrack II card driver.\n");
339 /* mute card - prevents noisy bootups */
341 rtrack2_unit
.muted
= 1;
346 MODULE_AUTHOR("Ben Pfaff");
347 MODULE_DESCRIPTION("A driver for the RadioTrack II radio card.");
348 MODULE_LICENSE("GPL");
350 module_param(io
, int, 0);
351 MODULE_PARM_DESC(io
, "I/O address of the RadioTrack card (0x20c or 0x30c)");
352 module_param(radio_nr
, int, 0);
354 static void __exit
rtrack2_cleanup_module(void)
356 video_unregister_device(&rtrack2_radio
);
357 release_region(io
,4);
360 module_init(rtrack2_init
);
361 module_exit(rtrack2_cleanup_module
);
365 compile-command: "mmake"