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 <media/v4l2-ioctl.h>
21 #include <linux/spinlock.h>
23 #include <linux/version.h> /* for KERNEL_VERSION MACRO */
24 #define RADIO_VERSION KERNEL_VERSION(0,0,2)
26 static struct v4l2_queryctrl radio_qctrl
[] = {
28 .id
= V4L2_CID_AUDIO_MUTE
,
33 .type
= V4L2_CTRL_TYPE_BOOLEAN
,
35 .id
= V4L2_CID_AUDIO_VOLUME
,
40 .default_value
= 0xff,
41 .type
= V4L2_CTRL_TYPE_INTEGER
,
45 #ifndef CONFIG_RADIO_RTRACK2_PORT
46 #define CONFIG_RADIO_RTRACK2_PORT -1
49 static int io
= CONFIG_RADIO_RTRACK2_PORT
;
50 static int radio_nr
= -1;
51 static spinlock_t lock
;
57 unsigned long curfreq
;
64 static void rt_mute(struct rt_device
*dev
)
74 static void rt_unmute(struct rt_device
*dev
)
84 static void zero(void)
98 static int rt_setfreq(struct rt_device
*dev
, unsigned long freq
)
102 freq
= freq
/ 200 + 856;
110 for (i
= 0; i
< 10; i
++)
113 for (i
= 14; i
>= 0; i
--)
127 static int vidioc_querycap(struct file
*file
, void *priv
,
128 struct v4l2_capability
*v
)
130 strlcpy(v
->driver
, "radio-rtrack2", sizeof(v
->driver
));
131 strlcpy(v
->card
, "RadioTrack II", sizeof(v
->card
));
132 sprintf(v
->bus_info
, "ISA");
133 v
->version
= RADIO_VERSION
;
134 v
->capabilities
= V4L2_CAP_TUNER
;
138 static int vidioc_s_tuner(struct file
*file
, void *priv
,
139 struct v4l2_tuner
*v
)
147 static int rt_getsigstr(struct rt_device
*dev
)
149 if (inb(io
) & 2) /* bit set = no signal present */
151 return 1; /* signal present */
154 static int vidioc_g_tuner(struct file
*file
, void *priv
,
155 struct v4l2_tuner
*v
)
157 struct rt_device
*rt
= video_drvdata(file
);
162 strcpy(v
->name
, "FM");
163 v
->type
= V4L2_TUNER_RADIO
;
164 v
->rangelow
= (88*16000);
165 v
->rangehigh
= (108*16000);
166 v
->rxsubchans
= V4L2_TUNER_SUB_MONO
;
167 v
->capability
= V4L2_TUNER_CAP_LOW
;
168 v
->audmode
= V4L2_TUNER_MODE_MONO
;
169 v
->signal
= 0xFFFF*rt_getsigstr(rt
);
173 static int vidioc_s_frequency(struct file
*file
, void *priv
,
174 struct v4l2_frequency
*f
)
176 struct rt_device
*rt
= video_drvdata(file
);
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 rt_device
*rt
= video_drvdata(file
);
188 f
->type
= V4L2_TUNER_RADIO
;
189 f
->frequency
= rt
->curfreq
;
193 static int vidioc_queryctrl(struct file
*file
, void *priv
,
194 struct v4l2_queryctrl
*qc
)
198 for (i
= 0; i
< ARRAY_SIZE(radio_qctrl
); i
++) {
199 if (qc
->id
&& qc
->id
== radio_qctrl
[i
].id
) {
200 memcpy(qc
, &(radio_qctrl
[i
]),
208 static int vidioc_g_ctrl(struct file
*file
, void *priv
,
209 struct v4l2_control
*ctrl
)
211 struct rt_device
*rt
= video_drvdata(file
);
214 case V4L2_CID_AUDIO_MUTE
:
215 ctrl
->value
= rt
->muted
;
217 case V4L2_CID_AUDIO_VOLUME
:
227 static int vidioc_s_ctrl(struct file
*file
, void *priv
,
228 struct v4l2_control
*ctrl
)
230 struct rt_device
*rt
= video_drvdata(file
);
233 case V4L2_CID_AUDIO_MUTE
:
239 case V4L2_CID_AUDIO_VOLUME
:
249 static int vidioc_g_audio(struct file
*file
, void *priv
,
250 struct v4l2_audio
*a
)
255 strcpy(a
->name
, "Radio");
256 a
->capability
= V4L2_AUDCAP_STEREO
;
260 static int vidioc_g_input(struct file
*filp
, void *priv
, unsigned int *i
)
266 static int vidioc_s_input(struct file
*filp
, void *priv
, unsigned int i
)
273 static int vidioc_s_audio(struct file
*file
, void *priv
,
274 struct v4l2_audio
*a
)
281 static struct rt_device rtrack2_unit
;
283 static int rtrack2_exclusive_open(struct inode
*inode
, struct file
*file
)
285 return test_and_set_bit(0, &rtrack2_unit
.in_use
) ? -EBUSY
: 0;
288 static int rtrack2_exclusive_release(struct inode
*inode
, struct file
*file
)
290 clear_bit(0, &rtrack2_unit
.in_use
);
294 static const struct file_operations rtrack2_fops
= {
295 .owner
= THIS_MODULE
,
296 .open
= rtrack2_exclusive_open
,
297 .release
= rtrack2_exclusive_release
,
298 .ioctl
= video_ioctl2
,
300 .compat_ioctl
= v4l_compat_ioctl32
,
305 static const struct v4l2_ioctl_ops rtrack2_ioctl_ops
= {
306 .vidioc_querycap
= vidioc_querycap
,
307 .vidioc_g_tuner
= vidioc_g_tuner
,
308 .vidioc_s_tuner
= vidioc_s_tuner
,
309 .vidioc_g_frequency
= vidioc_g_frequency
,
310 .vidioc_s_frequency
= vidioc_s_frequency
,
311 .vidioc_queryctrl
= vidioc_queryctrl
,
312 .vidioc_g_ctrl
= vidioc_g_ctrl
,
313 .vidioc_s_ctrl
= vidioc_s_ctrl
,
314 .vidioc_g_audio
= vidioc_g_audio
,
315 .vidioc_s_audio
= vidioc_s_audio
,
316 .vidioc_g_input
= vidioc_g_input
,
317 .vidioc_s_input
= vidioc_s_input
,
320 static struct video_device rtrack2_radio
= {
321 .name
= "RadioTrack II radio",
322 .fops
= &rtrack2_fops
,
323 .ioctl_ops
= &rtrack2_ioctl_ops
,
324 .release
= video_device_release_empty
,
327 static int __init
rtrack2_init(void)
331 printk(KERN_ERR
"You must set an I/O address with io=0x20c or io=0x30c\n");
334 if (!request_region(io
, 4, "rtrack2"))
336 printk(KERN_ERR
"rtrack2: port 0x%x already in use\n", io
);
340 video_set_drvdata(&rtrack2_radio
, &rtrack2_unit
);
342 spin_lock_init(&lock
);
343 if (video_register_device(&rtrack2_radio
, VFL_TYPE_RADIO
, radio_nr
) < 0) {
344 release_region(io
, 4);
348 printk(KERN_INFO
"AIMSlab Radiotrack II card driver.\n");
350 /* mute card - prevents noisy bootups */
352 rtrack2_unit
.muted
= 1;
357 MODULE_AUTHOR("Ben Pfaff");
358 MODULE_DESCRIPTION("A driver for the RadioTrack II radio card.");
359 MODULE_LICENSE("GPL");
361 module_param(io
, int, 0);
362 MODULE_PARM_DESC(io
, "I/O address of the RadioTrack card (0x20c or 0x30c)");
363 module_param(radio_nr
, int, 0);
365 static void __exit
rtrack2_cleanup_module(void)
367 video_unregister_device(&rtrack2_radio
);
368 release_region(io
,4);
371 module_init(rtrack2_init
);
372 module_exit(rtrack2_cleanup_module
);
376 compile-command: "mmake"