Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* Maestro PCI sound card radio driver for Linux support |
2 | * (c) 2000 A. Tlalka, atlka@pg.gda.pl | |
3 | * Notes on the hardware | |
4 | * | |
4286c6f6 | 5 | * + Frequency control is done digitally |
1da177e4 LT |
6 | * + No volume control - only mute/unmute - you have to use Aux line volume |
7 | * control on Maestro card to set the volume | |
8 | * + Radio status (tuned/not_tuned and stereo/mono) is valid some time after | |
9 | * frequency setting (>100ms) and only when the radio is unmuted. | |
10 | * version 0.02 | |
11 | * + io port is automatically detected - only the first radio is used | |
12 | * version 0.03 | |
13 | * + thread access locking additions | |
14 | * version 0.04 | |
15 | * + code improvements | |
16 | * + VIDEO_TUNER_LOW is permanent | |
b6055d7b MCC |
17 | * |
18 | * Converted to V4L2 API by Mauro Carvalho Chehab <mchehab@infradead.org> | |
1da177e4 LT |
19 | */ |
20 | ||
21 | #include <linux/module.h> | |
22 | #include <linux/init.h> | |
23 | #include <linux/ioport.h> | |
24 | #include <linux/delay.h> | |
1da177e4 LT |
25 | #include <asm/io.h> |
26 | #include <asm/uaccess.h> | |
1da177e4 | 27 | #include <linux/pci.h> |
b6055d7b | 28 | #include <linux/videodev2.h> |
5e87efa3 | 29 | #include <media/v4l2-common.h> |
35ea11ff | 30 | #include <media/v4l2-ioctl.h> |
3593cab5 | 31 | |
b6055d7b MCC |
32 | #include <linux/version.h> /* for KERNEL_VERSION MACRO */ |
33 | #define RADIO_VERSION KERNEL_VERSION(0,0,6) | |
34 | #define DRIVER_VERSION "0.06" | |
35 | ||
36 | static struct v4l2_queryctrl radio_qctrl[] = { | |
37 | { | |
38 | .id = V4L2_CID_AUDIO_MUTE, | |
39 | .name = "Mute", | |
40 | .minimum = 0, | |
41 | .maximum = 1, | |
42 | .default_value = 1, | |
43 | .type = V4L2_CTRL_TYPE_BOOLEAN, | |
44 | } | |
45 | }; | |
1da177e4 | 46 | |
6a2cf8ee | 47 | #define GPIO_DATA 0x60 /* port offset from ESS_IO_BASE */ |
1da177e4 LT |
48 | |
49 | #define IO_MASK 4 /* mask register offset from GPIO_DATA | |
50 | bits 1=unmask write to given bit */ | |
51 | #define IO_DIR 8 /* direction register offset from GPIO_DATA | |
52 | bits 0/1=read/write direction */ | |
53 | ||
6a2cf8ee JS |
54 | #define GPIO6 0x0040 /* mask bits for GPIO lines */ |
55 | #define GPIO7 0x0080 | |
56 | #define GPIO8 0x0100 | |
57 | #define GPIO9 0x0200 | |
1da177e4 | 58 | |
6a2cf8ee JS |
59 | #define STR_DATA GPIO6 /* radio TEA5757 pins and GPIO bits */ |
60 | #define STR_CLK GPIO7 | |
61 | #define STR_WREN GPIO8 | |
62 | #define STR_MOST GPIO9 | |
1da177e4 LT |
63 | |
64 | #define FREQ_LO 50*16000 | |
65 | #define FREQ_HI 150*16000 | |
66 | ||
6a2cf8ee JS |
67 | #define FREQ_IF 171200 /* 10.7*16000 */ |
68 | #define FREQ_STEP 200 /* 12.5*16 */ | |
1da177e4 LT |
69 | |
70 | #define FREQ2BITS(x) ((((unsigned int)(x)+FREQ_IF+(FREQ_STEP<<1))\ | |
71 | /(FREQ_STEP<<2))<<2) /* (x==fmhz*16*1000) -> bits */ | |
72 | ||
73 | #define BITS2FREQ(x) ((x) * FREQ_STEP - FREQ_IF) | |
74 | ||
75 | static int radio_nr = -1; | |
76 | module_param(radio_nr, int, 0); | |
77 | ||
3ca685aa HV |
78 | static unsigned long in_use; |
79 | ||
89dad8f0 | 80 | static int maestro_probe(struct pci_dev *pdev, const struct pci_device_id *ent); |
3ca685aa | 81 | |
bec43661 | 82 | static int maestro_exclusive_open(struct file *file) |
3ca685aa HV |
83 | { |
84 | return test_and_set_bit(0, &in_use) ? -EBUSY : 0; | |
85 | } | |
86 | ||
bec43661 | 87 | static int maestro_exclusive_release(struct file *file) |
3ca685aa HV |
88 | { |
89 | clear_bit(0, &in_use); | |
90 | return 0; | |
91 | } | |
92 | ||
89dad8f0 JS |
93 | static void maestro_remove(struct pci_dev *pdev); |
94 | ||
95 | static struct pci_device_id maestro_r_pci_tbl[] = { | |
96 | { PCI_DEVICE(PCI_VENDOR_ID_ESS, PCI_DEVICE_ID_ESS_ESS1968), | |
97 | .class = PCI_CLASS_MULTIMEDIA_AUDIO << 8, | |
98 | .class_mask = 0xffff00 }, | |
99 | { PCI_DEVICE(PCI_VENDOR_ID_ESS, PCI_DEVICE_ID_ESS_ESS1978), | |
100 | .class = PCI_CLASS_MULTIMEDIA_AUDIO << 8, | |
101 | .class_mask = 0xffff00 }, | |
102 | { 0 } | |
103 | }; | |
104 | MODULE_DEVICE_TABLE(pci, maestro_r_pci_tbl); | |
105 | ||
106 | static struct pci_driver maestro_r_driver = { | |
107 | .name = "maestro_radio", | |
108 | .id_table = maestro_r_pci_tbl, | |
109 | .probe = maestro_probe, | |
110 | .remove = __devexit_p(maestro_remove), | |
111 | }; | |
1da177e4 | 112 | |
bec43661 | 113 | static const struct v4l2_file_operations maestro_fops = { |
1da177e4 | 114 | .owner = THIS_MODULE, |
3ca685aa HV |
115 | .open = maestro_exclusive_open, |
116 | .release = maestro_exclusive_release, | |
d455cf5d | 117 | .ioctl = video_ioctl2, |
1da177e4 LT |
118 | }; |
119 | ||
6a2cf8ee | 120 | struct radio_device { |
0eaa21fd | 121 | u16 io, /* base of Maestro card radio io (GPIO_DATA)*/ |
1da177e4 | 122 | muted, /* VIDEO_AUDIO_MUTE */ |
4286c6f6 | 123 | stereo, /* VIDEO_TUNER_STEREO_ON */ |
1da177e4 | 124 | tuned; /* signal strength (0 or 0xffff) */ |
89dad8f0 | 125 | }; |
1da177e4 | 126 | |
0eaa21fd | 127 | static u32 radio_bits_get(struct radio_device *dev) |
1da177e4 | 128 | { |
0eaa21fd JS |
129 | register u16 io=dev->io, l, rdata; |
130 | register u32 data=0; | |
131 | u16 omask; | |
6a2cf8ee | 132 | |
1da177e4 LT |
133 | omask = inw(io + IO_MASK); |
134 | outw(~(STR_CLK | STR_WREN), io + IO_MASK); | |
135 | outw(0, io); | |
136 | udelay(16); | |
137 | ||
138 | for (l=24;l--;) { | |
139 | outw(STR_CLK, io); /* HI state */ | |
140 | udelay(2); | |
4286c6f6 | 141 | if(!l) |
1da177e4 LT |
142 | dev->tuned = inw(io) & STR_MOST ? 0 : 0xffff; |
143 | outw(0, io); /* LO state */ | |
144 | udelay(2); | |
145 | data <<= 1; /* shift data */ | |
146 | rdata = inw(io); | |
147 | if(!l) | |
4286c6f6 | 148 | dev->stereo = rdata & STR_MOST ? |
b6055d7b | 149 | 0 : 1; |
1da177e4 LT |
150 | else |
151 | if(rdata & STR_DATA) | |
152 | data++; | |
153 | udelay(2); | |
154 | } | |
6a2cf8ee | 155 | |
1da177e4 LT |
156 | if(dev->muted) |
157 | outw(STR_WREN, io); | |
6a2cf8ee | 158 | |
1da177e4 LT |
159 | udelay(4); |
160 | outw(omask, io + IO_MASK); | |
6a2cf8ee | 161 | |
1da177e4 LT |
162 | return data & 0x3ffe; |
163 | } | |
164 | ||
0eaa21fd | 165 | static void radio_bits_set(struct radio_device *dev, u32 data) |
1da177e4 | 166 | { |
0eaa21fd JS |
167 | register u16 io=dev->io, l, bits; |
168 | u16 omask, odir; | |
6a2cf8ee | 169 | |
1da177e4 LT |
170 | omask = inw(io + IO_MASK); |
171 | odir = (inw(io + IO_DIR) & ~STR_DATA) | (STR_CLK | STR_WREN); | |
172 | outw(odir | STR_DATA, io + IO_DIR); | |
173 | outw(~(STR_DATA | STR_CLK | STR_WREN), io + IO_MASK); | |
174 | udelay(16); | |
175 | for (l=25;l;l--) { | |
176 | bits = ((data >> 18) & STR_DATA) | STR_WREN ; | |
177 | data <<= 1; /* shift data */ | |
178 | outw(bits, io); /* start strobe */ | |
179 | udelay(2); | |
180 | outw(bits | STR_CLK, io); /* HI level */ | |
181 | udelay(2); | |
182 | outw(bits, io); /* LO level */ | |
183 | udelay(4); | |
184 | } | |
6a2cf8ee | 185 | |
1da177e4 LT |
186 | if(!dev->muted) |
187 | outw(0, io); | |
6a2cf8ee | 188 | |
1da177e4 LT |
189 | udelay(4); |
190 | outw(omask, io + IO_MASK); | |
191 | outw(odir, io + IO_DIR); | |
192 | msleep(125); | |
193 | } | |
194 | ||
d455cf5d DL |
195 | static int vidioc_querycap(struct file *file, void *priv, |
196 | struct v4l2_capability *v) | |
197 | { | |
198 | strlcpy(v->driver, "radio-maestro", sizeof(v->driver)); | |
199 | strlcpy(v->card, "Maestro Radio", sizeof(v->card)); | |
200 | sprintf(v->bus_info, "PCI"); | |
201 | v->version = RADIO_VERSION; | |
202 | v->capabilities = V4L2_CAP_TUNER; | |
203 | return 0; | |
204 | } | |
205 | ||
206 | static int vidioc_g_tuner(struct file *file, void *priv, | |
207 | struct v4l2_tuner *v) | |
1da177e4 | 208 | { |
c170ecf4 | 209 | struct radio_device *card = video_drvdata(file); |
6a2cf8ee | 210 | |
d455cf5d DL |
211 | if (v->index > 0) |
212 | return -EINVAL; | |
213 | ||
214 | (void)radio_bits_get(card); | |
215 | ||
216 | strcpy(v->name, "FM"); | |
217 | v->type = V4L2_TUNER_RADIO; | |
218 | v->rangelow = FREQ_LO; | |
219 | v->rangehigh = FREQ_HI; | |
220 | v->rxsubchans = V4L2_TUNER_SUB_MONO|V4L2_TUNER_SUB_STEREO; | |
221 | v->capability = V4L2_TUNER_CAP_LOW; | |
222 | if(card->stereo) | |
223 | v->audmode = V4L2_TUNER_MODE_STEREO; | |
224 | else | |
225 | v->audmode = V4L2_TUNER_MODE_MONO; | |
226 | v->signal = card->tuned; | |
227 | return 0; | |
228 | } | |
b6055d7b | 229 | |
d455cf5d DL |
230 | static int vidioc_s_tuner(struct file *file, void *priv, |
231 | struct v4l2_tuner *v) | |
232 | { | |
233 | if (v->index > 0) | |
234 | return -EINVAL; | |
235 | return 0; | |
236 | } | |
b6055d7b | 237 | |
d455cf5d DL |
238 | static int vidioc_s_frequency(struct file *file, void *priv, |
239 | struct v4l2_frequency *f) | |
240 | { | |
c170ecf4 | 241 | struct radio_device *card = video_drvdata(file); |
b6055d7b | 242 | |
d455cf5d DL |
243 | if (f->frequency < FREQ_LO || f->frequency > FREQ_HI) |
244 | return -EINVAL; | |
245 | radio_bits_set(card, FREQ2BITS(f->frequency)); | |
246 | return 0; | |
247 | } | |
b6055d7b | 248 | |
d455cf5d DL |
249 | static int vidioc_g_frequency(struct file *file, void *priv, |
250 | struct v4l2_frequency *f) | |
251 | { | |
c170ecf4 | 252 | struct radio_device *card = video_drvdata(file); |
b6055d7b | 253 | |
d455cf5d DL |
254 | f->type = V4L2_TUNER_RADIO; |
255 | f->frequency = BITS2FREQ(radio_bits_get(card)); | |
256 | return 0; | |
257 | } | |
b6055d7b | 258 | |
d455cf5d DL |
259 | static int vidioc_queryctrl(struct file *file, void *priv, |
260 | struct v4l2_queryctrl *qc) | |
261 | { | |
262 | int i; | |
b6055d7b | 263 | |
d455cf5d DL |
264 | for (i = 0; i < ARRAY_SIZE(radio_qctrl); i++) { |
265 | if (qc->id && qc->id == radio_qctrl[i].id) { | |
266 | memcpy(qc, &(radio_qctrl[i]), | |
267 | sizeof(*qc)); | |
b6055d7b MCC |
268 | return 0; |
269 | } | |
d455cf5d DL |
270 | } |
271 | return -EINVAL; | |
272 | } | |
b6055d7b | 273 | |
d455cf5d DL |
274 | static int vidioc_g_ctrl(struct file *file, void *priv, |
275 | struct v4l2_control *ctrl) | |
276 | { | |
c170ecf4 | 277 | struct radio_device *card = video_drvdata(file); |
b6055d7b | 278 | |
d455cf5d DL |
279 | switch (ctrl->id) { |
280 | case V4L2_CID_AUDIO_MUTE: | |
281 | ctrl->value = card->muted; | |
282 | return 0; | |
1da177e4 | 283 | } |
d455cf5d | 284 | return -EINVAL; |
1da177e4 LT |
285 | } |
286 | ||
d455cf5d DL |
287 | static int vidioc_s_ctrl(struct file *file, void *priv, |
288 | struct v4l2_control *ctrl) | |
1da177e4 | 289 | { |
c170ecf4 | 290 | struct radio_device *card = video_drvdata(file); |
d455cf5d DL |
291 | register u16 io = card->io; |
292 | register u16 omask = inw(io + IO_MASK); | |
293 | ||
294 | switch (ctrl->id) { | |
295 | case V4L2_CID_AUDIO_MUTE: | |
296 | outw(~STR_WREN, io + IO_MASK); | |
297 | outw((card->muted = ctrl->value ) ? | |
298 | STR_WREN : 0, io); | |
299 | udelay(4); | |
300 | outw(omask, io + IO_MASK); | |
301 | msleep(125); | |
302 | return 0; | |
303 | } | |
304 | return -EINVAL; | |
305 | } | |
1da177e4 | 306 | |
d455cf5d DL |
307 | static int vidioc_g_audio(struct file *file, void *priv, |
308 | struct v4l2_audio *a) | |
309 | { | |
310 | if (a->index > 1) | |
311 | return -EINVAL; | |
312 | ||
313 | strcpy(a->name, "Radio"); | |
314 | a->capability = V4L2_AUDCAP_STEREO; | |
315 | return 0; | |
316 | } | |
6a2cf8ee | 317 | |
d455cf5d DL |
318 | static int vidioc_g_input(struct file *filp, void *priv, unsigned int *i) |
319 | { | |
320 | *i = 0; | |
321 | return 0; | |
322 | } | |
323 | ||
324 | static int vidioc_s_input(struct file *filp, void *priv, unsigned int i) | |
325 | { | |
326 | if (i != 0) | |
327 | return -EINVAL; | |
328 | return 0; | |
329 | } | |
330 | ||
331 | static int vidioc_s_audio(struct file *file, void *priv, | |
332 | struct v4l2_audio *a) | |
333 | { | |
334 | if (a->index != 0) | |
335 | return -EINVAL; | |
336 | return 0; | |
1da177e4 LT |
337 | } |
338 | ||
0eaa21fd | 339 | static u16 __devinit radio_power_on(struct radio_device *dev) |
1da177e4 | 340 | { |
0eaa21fd JS |
341 | register u16 io = dev->io; |
342 | register u32 ofreq; | |
343 | u16 omask, odir; | |
6a2cf8ee | 344 | |
1da177e4 | 345 | omask = inw(io + IO_MASK); |
6a2cf8ee | 346 | odir = (inw(io + IO_DIR) & ~STR_DATA) | (STR_CLK | STR_WREN); |
1da177e4 | 347 | outw(odir & ~STR_WREN, io + IO_DIR); |
b6055d7b | 348 | dev->muted = inw(io) & STR_WREN ? 0 : 1; |
1da177e4 LT |
349 | outw(odir, io + IO_DIR); |
350 | outw(~(STR_WREN | STR_CLK), io + IO_MASK); | |
351 | outw(dev->muted ? 0 : STR_WREN, io); | |
352 | udelay(16); | |
353 | outw(omask, io + IO_MASK); | |
354 | ofreq = radio_bits_get(dev); | |
6a2cf8ee JS |
355 | |
356 | if ((ofreq < FREQ2BITS(FREQ_LO)) || (ofreq > FREQ2BITS(FREQ_HI))) | |
1da177e4 LT |
357 | ofreq = FREQ2BITS(FREQ_LO); |
358 | radio_bits_set(dev, ofreq); | |
6a2cf8ee | 359 | |
1da177e4 LT |
360 | return (ofreq == radio_bits_get(dev)); |
361 | } | |
362 | ||
a399810c | 363 | static const struct v4l2_ioctl_ops maestro_ioctl_ops = { |
d455cf5d DL |
364 | .vidioc_querycap = vidioc_querycap, |
365 | .vidioc_g_tuner = vidioc_g_tuner, | |
366 | .vidioc_s_tuner = vidioc_s_tuner, | |
367 | .vidioc_g_audio = vidioc_g_audio, | |
368 | .vidioc_s_audio = vidioc_s_audio, | |
369 | .vidioc_g_input = vidioc_g_input, | |
370 | .vidioc_s_input = vidioc_s_input, | |
371 | .vidioc_g_frequency = vidioc_g_frequency, | |
372 | .vidioc_s_frequency = vidioc_s_frequency, | |
373 | .vidioc_queryctrl = vidioc_queryctrl, | |
374 | .vidioc_g_ctrl = vidioc_g_ctrl, | |
375 | .vidioc_s_ctrl = vidioc_s_ctrl, | |
376 | }; | |
377 | ||
a399810c HV |
378 | static struct video_device maestro_radio = { |
379 | .name = "Maestro radio", | |
a399810c HV |
380 | .fops = &maestro_fops, |
381 | .ioctl_ops = &maestro_ioctl_ops, | |
aa5e90af | 382 | .release = video_device_release, |
a399810c HV |
383 | }; |
384 | ||
89dad8f0 JS |
385 | static int __devinit maestro_probe(struct pci_dev *pdev, |
386 | const struct pci_device_id *ent) | |
1da177e4 | 387 | { |
89dad8f0 JS |
388 | struct radio_device *radio_unit; |
389 | struct video_device *maestro_radio_inst; | |
390 | int retval; | |
391 | ||
392 | retval = pci_enable_device(pdev); | |
393 | if (retval) { | |
394 | dev_err(&pdev->dev, "enabling pci device failed!\n"); | |
395 | goto err; | |
396 | } | |
397 | ||
398 | retval = -ENOMEM; | |
399 | ||
400 | radio_unit = kzalloc(sizeof(*radio_unit), GFP_KERNEL); | |
401 | if (radio_unit == NULL) { | |
402 | dev_err(&pdev->dev, "not enough memory\n"); | |
403 | goto err; | |
404 | } | |
405 | ||
406 | radio_unit->io = pci_resource_start(pdev, 0) + GPIO_DATA; | |
89dad8f0 JS |
407 | |
408 | maestro_radio_inst = video_device_alloc(); | |
409 | if (maestro_radio_inst == NULL) { | |
410 | dev_err(&pdev->dev, "not enough memory\n"); | |
411 | goto errfr; | |
412 | } | |
413 | ||
414 | memcpy(maestro_radio_inst, &maestro_radio, sizeof(maestro_radio)); | |
415 | video_set_drvdata(maestro_radio_inst, radio_unit); | |
416 | pci_set_drvdata(pdev, maestro_radio_inst); | |
417 | ||
cba99ae8 | 418 | retval = video_register_device(maestro_radio_inst, VFL_TYPE_RADIO, radio_nr); |
89dad8f0 JS |
419 | if (retval) { |
420 | printk(KERN_ERR "can't register video device!\n"); | |
421 | goto errfr1; | |
422 | } | |
423 | ||
424 | if (!radio_power_on(radio_unit)) { | |
425 | retval = -EIO; | |
426 | goto errunr; | |
427 | } | |
428 | ||
429 | dev_info(&pdev->dev, "version " DRIVER_VERSION " time " __TIME__ " " | |
6a2cf8ee | 430 | __DATE__ "\n"); |
89dad8f0 JS |
431 | dev_info(&pdev->dev, "radio chip initialized\n"); |
432 | ||
433 | return 0; | |
434 | errunr: | |
435 | video_unregister_device(maestro_radio_inst); | |
436 | errfr1: | |
f37fdf3f | 437 | video_device_release(maestro_radio_inst); |
89dad8f0 JS |
438 | errfr: |
439 | kfree(radio_unit); | |
440 | err: | |
441 | return retval; | |
442 | ||
443 | } | |
444 | ||
445 | static void __devexit maestro_remove(struct pci_dev *pdev) | |
446 | { | |
447 | struct video_device *vdev = pci_get_drvdata(pdev); | |
448 | ||
449 | video_unregister_device(vdev); | |
1da177e4 LT |
450 | } |
451 | ||
89dad8f0 JS |
452 | static int __init maestro_radio_init(void) |
453 | { | |
454 | int retval = pci_register_driver(&maestro_r_driver); | |
455 | ||
456 | if (retval) | |
457 | printk(KERN_ERR "error during registration pci driver\n"); | |
458 | ||
459 | return retval; | |
460 | } | |
461 | ||
462 | static void __exit maestro_radio_exit(void) | |
463 | { | |
464 | pci_unregister_driver(&maestro_r_driver); | |
465 | } | |
466 | ||
467 | module_init(maestro_radio_init); | |
468 | module_exit(maestro_radio_exit); | |
6a2cf8ee JS |
469 | |
470 | MODULE_AUTHOR("Adam Tlalka, atlka@pg.gda.pl"); | |
471 | MODULE_DESCRIPTION("Radio driver for the Maestro PCI sound card radio."); | |
472 | MODULE_LICENSE("GPL"); |