2 * Guillemot Maxi Radio FM 2000 PCI radio card driver for Linux
3 * (C) 2001 Dimitromanolakis Apostolos <apdim@grecian.net>
5 * Based in the radio Maestro PCI driver. Actually it uses the same chip
6 * for radio but different pci controller.
8 * I didn't have any specs I reversed engineered the protocol from
9 * the windows driver (radio.dll).
11 * The card uses the TEA5757 chip that includes a search function but it
12 * is useless as I haven't found any way to read back the frequency. If
13 * anybody does please mail me.
15 * For the pdf file see:
16 * http://www.semiconductors.philips.com/pip/TEA5757H/V1
21 * - better pci interface thanks to Francois Romieu <romieu@cogenit.fr>
23 * 0.75 Sun Feb 4 22:51:27 EET 2001
25 * - removed support for multiple devices as it didn't work anyway
28 * - card unmutes if you change frequency
30 * (c) 2006, 2007 by Mauro Carvalho Chehab <mchehab@infradead.org>:
31 * - Conversion to V4L2 API
32 * - Uses video_ioctl2 for parsing and to add debug support
36 #include <linux/module.h>
37 #include <linux/init.h>
38 #include <linux/ioport.h>
39 #include <linux/delay.h>
41 #include <asm/uaccess.h>
42 #include <linux/mutex.h>
44 #include <linux/pci.h>
45 #include <linux/videodev2.h>
46 #include <media/v4l2-common.h>
47 #include <media/v4l2-ioctl.h>
49 #define DRIVER_VERSION "0.77"
51 #include <linux/version.h> /* for KERNEL_VERSION MACRO */
52 #define RADIO_VERSION KERNEL_VERSION(0,7,7)
54 static struct video_device maxiradio_radio
;
56 #define dprintk(num, fmt, arg...) \
58 if (maxiradio_radio.debug >= num) \
59 printk(KERN_DEBUG "%s: " fmt, \
60 maxiradio_radio.name, ## arg); } while (0)
62 static struct v4l2_queryctrl radio_qctrl
[] = {
64 .id
= V4L2_CID_AUDIO_MUTE
,
69 .type
= V4L2_CTRL_TYPE_BOOLEAN
,
73 #ifndef PCI_VENDOR_ID_GUILLEMOT
74 #define PCI_VENDOR_ID_GUILLEMOT 0x5046
77 #ifndef PCI_DEVICE_ID_GUILLEMOT
78 #define PCI_DEVICE_ID_GUILLEMOT_MAXIRADIO 0x1001
82 /* TEA5757 pin mappings */
83 static const int clk
= 1, data
= 2, wren
= 4, mo_st
= 8, power
= 16 ;
85 static int radio_nr
= -1;
86 module_param(radio_nr
, int, 0);
89 #define FREQ_LO 50*16000
90 #define FREQ_HI 150*16000
92 #define FREQ_IF 171200 /* 10.7*16000 */
93 #define FREQ_STEP 200 /* 12.5*16 */
95 /* (x==fmhz*16*1000) -> bits */
96 #define FREQ2BITS(x) ((( (unsigned int)(x)+FREQ_IF+(FREQ_STEP<<1)) \
99 #define BITS2FREQ(x) ((x) * FREQ_STEP - FREQ_IF)
102 static const struct file_operations maxiradio_fops
= {
103 .owner
= THIS_MODULE
,
104 .open
= video_exclusive_open
,
105 .release
= video_exclusive_release
,
106 .ioctl
= video_ioctl2
,
108 .compat_ioctl
= v4l_compat_ioctl32
,
113 static struct radio_device
115 __u16 io
, /* base of radio io */
116 muted
, /* VIDEO_AUDIO_MUTE */
117 stereo
, /* VIDEO_TUNER_STEREO_ON */
118 tuned
; /* signal strength (0 or 0xffff) */
128 static void outbit(unsigned long bit
, __u16 io
)
132 outb( power
|wren
|data
,io
); udelay(4);
133 outb( power
|wren
|data
|clk
,io
); udelay(4);
134 outb( power
|wren
|data
,io
); udelay(4);
138 outb( power
|wren
,io
); udelay(4);
139 outb( power
|wren
|clk
,io
); udelay(4);
140 outb( power
|wren
,io
); udelay(4);
144 static void turn_power(__u16 io
, int p
)
147 dprintk(1, "Radio powered on\n");
150 dprintk(1, "Radio powered off\n");
155 static void set_freq(__u16 io
, __u32 freq
)
157 unsigned long int si
;
159 int data
= FREQ2BITS(freq
);
161 /* TEA5757 shift register bits (see pdf) */
163 outbit(0,io
); // 24 search
164 outbit(1,io
); // 23 search up/down
166 outbit(0,io
); // 22 stereo/mono
168 outbit(0,io
); // 21 band
169 outbit(0,io
); // 20 band (only 00=FM works I think)
171 outbit(0,io
); // 19 port ?
172 outbit(0,io
); // 18 port ?
174 outbit(0,io
); // 17 search level
175 outbit(0,io
); // 16 search level
178 for (bl
= 1; bl
<= 16 ; bl
++) {
179 outbit(data
& si
,io
);
183 dprintk(1, "Radio freq set to %d.%02d MHz\n",
185 freq
% 16000 * 100 / 16000);
190 static int get_stereo(__u16 io
)
195 return !(inb(io
) & mo_st
);
198 static int get_tune(__u16 io
)
203 return !(inb(io
) & mo_st
);
207 static int vidioc_querycap (struct file
*file
, void *priv
,
208 struct v4l2_capability
*v
)
210 strlcpy(v
->driver
, "radio-maxiradio", sizeof (v
->driver
));
211 strlcpy(v
->card
, "Maxi Radio FM2000 radio", sizeof (v
->card
));
212 sprintf(v
->bus_info
,"ISA");
213 v
->version
= RADIO_VERSION
;
214 v
->capabilities
= V4L2_CAP_TUNER
;
219 static int vidioc_g_tuner (struct file
*file
, void *priv
,
220 struct v4l2_tuner
*v
)
222 struct video_device
*dev
= video_devdata(file
);
223 struct radio_device
*card
=dev
->priv
;
228 memset(v
,0,sizeof(*v
));
229 strcpy(v
->name
, "FM");
230 v
->type
= V4L2_TUNER_RADIO
;
233 v
->rangehigh
=FREQ_HI
;
234 v
->rxsubchans
=V4L2_TUNER_SUB_MONO
|V4L2_TUNER_SUB_STEREO
;
235 v
->capability
=V4L2_TUNER_CAP_LOW
;
236 if(get_stereo(card
->io
))
237 v
->audmode
= V4L2_TUNER_MODE_STEREO
;
239 v
->audmode
= V4L2_TUNER_MODE_MONO
;
240 v
->signal
=0xffff*get_tune(card
->io
);
245 static int vidioc_s_tuner (struct file
*file
, void *priv
,
246 struct v4l2_tuner
*v
)
254 static int vidioc_g_audio (struct file
*file
, void *priv
,
255 struct v4l2_audio
*a
)
260 strcpy(a
->name
, "FM");
261 a
->capability
= V4L2_AUDCAP_STEREO
;
265 static int vidioc_g_input(struct file
*filp
, void *priv
, unsigned int *i
)
272 static int vidioc_s_input(struct file
*filp
, void *priv
, unsigned int i
)
281 static int vidioc_s_audio (struct file
*file
, void *priv
,
282 struct v4l2_audio
*a
)
290 static int vidioc_s_frequency (struct file
*file
, void *priv
,
291 struct v4l2_frequency
*f
)
293 struct video_device
*dev
= video_devdata(file
);
294 struct radio_device
*card
=dev
->priv
;
296 if (f
->frequency
< FREQ_LO
|| f
->frequency
> FREQ_HI
) {
297 dprintk(1, "radio freq (%d.%02d MHz) out of range (%d-%d)\n",
298 f
->frequency
/ 16000,
299 f
->frequency
% 16000 * 100 / 16000,
300 FREQ_LO
/ 16000, FREQ_HI
/ 16000);
305 card
->freq
= f
->frequency
;
306 set_freq(card
->io
, card
->freq
);
312 static int vidioc_g_frequency (struct file
*file
, void *priv
,
313 struct v4l2_frequency
*f
)
315 struct video_device
*dev
= video_devdata(file
);
316 struct radio_device
*card
=dev
->priv
;
318 f
->type
= V4L2_TUNER_RADIO
;
319 f
->frequency
= card
->freq
;
321 dprintk(4, "radio freq is %d.%02d MHz",
322 f
->frequency
/ 16000,
323 f
->frequency
% 16000 * 100 / 16000);
328 static int vidioc_queryctrl (struct file
*file
, void *priv
,
329 struct v4l2_queryctrl
*qc
)
333 for (i
= 0; i
< ARRAY_SIZE(radio_qctrl
); i
++) {
334 if (qc
->id
&& qc
->id
== radio_qctrl
[i
].id
) {
335 memcpy(qc
, &(radio_qctrl
[i
]), sizeof(*qc
));
343 static int vidioc_g_ctrl (struct file
*file
, void *priv
,
344 struct v4l2_control
*ctrl
)
346 struct video_device
*dev
= video_devdata(file
);
347 struct radio_device
*card
=dev
->priv
;
350 case V4L2_CID_AUDIO_MUTE
:
351 ctrl
->value
=card
->muted
;
358 static int vidioc_s_ctrl (struct file
*file
, void *priv
,
359 struct v4l2_control
*ctrl
)
361 struct video_device
*dev
= video_devdata(file
);
362 struct radio_device
*card
=dev
->priv
;
365 case V4L2_CID_AUDIO_MUTE
:
366 card
->muted
= ctrl
->value
;
368 turn_power(card
->io
, 0);
370 set_freq(card
->io
, card
->freq
);
377 static const struct v4l2_ioctl_ops maxiradio_ioctl_ops
= {
378 .vidioc_querycap
= vidioc_querycap
,
379 .vidioc_g_tuner
= vidioc_g_tuner
,
380 .vidioc_s_tuner
= vidioc_s_tuner
,
381 .vidioc_g_audio
= vidioc_g_audio
,
382 .vidioc_s_audio
= vidioc_s_audio
,
383 .vidioc_g_input
= vidioc_g_input
,
384 .vidioc_s_input
= vidioc_s_input
,
385 .vidioc_g_frequency
= vidioc_g_frequency
,
386 .vidioc_s_frequency
= vidioc_s_frequency
,
387 .vidioc_queryctrl
= vidioc_queryctrl
,
388 .vidioc_g_ctrl
= vidioc_g_ctrl
,
389 .vidioc_s_ctrl
= vidioc_s_ctrl
,
392 static struct video_device maxiradio_radio
= {
393 .name
= "Maxi Radio FM2000 radio",
394 .fops
= &maxiradio_fops
,
395 .ioctl_ops
= &maxiradio_ioctl_ops
,
398 static int __devinit
maxiradio_init_one(struct pci_dev
*pdev
, const struct pci_device_id
*ent
)
400 if(!request_region(pci_resource_start(pdev
, 0),
401 pci_resource_len(pdev
, 0), "Maxi Radio FM 2000")) {
402 printk(KERN_ERR
"radio-maxiradio: can't reserve I/O ports\n");
406 if (pci_enable_device(pdev
))
407 goto err_out_free_region
;
409 radio_unit
.io
= pci_resource_start(pdev
, 0);
410 mutex_init(&radio_unit
.lock
);
411 maxiradio_radio
.priv
= &radio_unit
;
413 if (video_register_device(&maxiradio_radio
, VFL_TYPE_RADIO
, radio_nr
)==-1) {
414 printk("radio-maxiradio: can't register device!");
415 goto err_out_free_region
;
418 printk(KERN_INFO
"radio-maxiradio: version "
425 printk(KERN_INFO
"radio-maxiradio: found Guillemot MAXI Radio device (io = 0x%x)\n",
430 release_region(pci_resource_start(pdev
, 0), pci_resource_len(pdev
, 0));
435 static void __devexit
maxiradio_remove_one(struct pci_dev
*pdev
)
437 video_unregister_device(&maxiradio_radio
);
438 release_region(pci_resource_start(pdev
, 0), pci_resource_len(pdev
, 0));
441 static struct pci_device_id maxiradio_pci_tbl
[] = {
442 { PCI_VENDOR_ID_GUILLEMOT
, PCI_DEVICE_ID_GUILLEMOT_MAXIRADIO
,
443 PCI_ANY_ID
, PCI_ANY_ID
, },
447 MODULE_DEVICE_TABLE(pci
, maxiradio_pci_tbl
);
449 static struct pci_driver maxiradio_driver
= {
450 .name
= "radio-maxiradio",
451 .id_table
= maxiradio_pci_tbl
,
452 .probe
= maxiradio_init_one
,
453 .remove
= __devexit_p(maxiradio_remove_one
),
456 static int __init
maxiradio_radio_init(void)
458 return pci_register_driver(&maxiradio_driver
);
461 static void __exit
maxiradio_radio_exit(void)
463 pci_unregister_driver(&maxiradio_driver
);
466 module_init(maxiradio_radio_init
);
467 module_exit(maxiradio_radio_exit
);
469 MODULE_AUTHOR("Dimitromanolakis Apostolos, apdim@grecian.net");
470 MODULE_DESCRIPTION("Radio driver for the Guillemot Maxi Radio FM2000 radio.");
471 MODULE_LICENSE("GPL");
473 module_param_named(debug
,maxiradio_radio
.debug
, int, 0644);
474 MODULE_PARM_DESC(debug
,"activates debug info");