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 | ||
89dad8f0 JS |
78 | static int maestro_probe(struct pci_dev *pdev, const struct pci_device_id *ent); |
79 | static void maestro_remove(struct pci_dev *pdev); | |
80 | ||
81 | static struct pci_device_id maestro_r_pci_tbl[] = { | |
82 | { PCI_DEVICE(PCI_VENDOR_ID_ESS, PCI_DEVICE_ID_ESS_ESS1968), | |
83 | .class = PCI_CLASS_MULTIMEDIA_AUDIO << 8, | |
84 | .class_mask = 0xffff00 }, | |
85 | { PCI_DEVICE(PCI_VENDOR_ID_ESS, PCI_DEVICE_ID_ESS_ESS1978), | |
86 | .class = PCI_CLASS_MULTIMEDIA_AUDIO << 8, | |
87 | .class_mask = 0xffff00 }, | |
88 | { 0 } | |
89 | }; | |
90 | MODULE_DEVICE_TABLE(pci, maestro_r_pci_tbl); | |
91 | ||
92 | static struct pci_driver maestro_r_driver = { | |
93 | .name = "maestro_radio", | |
94 | .id_table = maestro_r_pci_tbl, | |
95 | .probe = maestro_probe, | |
96 | .remove = __devexit_p(maestro_remove), | |
97 | }; | |
1da177e4 | 98 | |
fa027c2a | 99 | static const struct file_operations maestro_fops = { |
1da177e4 LT |
100 | .owner = THIS_MODULE, |
101 | .open = video_exclusive_open, | |
102 | .release = video_exclusive_release, | |
d455cf5d | 103 | .ioctl = video_ioctl2, |
078ff795 | 104 | #ifdef CONFIG_COMPAT |
0d0fbf81 | 105 | .compat_ioctl = v4l_compat_ioctl32, |
078ff795 | 106 | #endif |
1da177e4 LT |
107 | .llseek = no_llseek, |
108 | }; | |
109 | ||
6a2cf8ee | 110 | struct radio_device { |
0eaa21fd | 111 | u16 io, /* base of Maestro card radio io (GPIO_DATA)*/ |
1da177e4 | 112 | muted, /* VIDEO_AUDIO_MUTE */ |
4286c6f6 | 113 | stereo, /* VIDEO_TUNER_STEREO_ON */ |
1da177e4 | 114 | tuned; /* signal strength (0 or 0xffff) */ |
89dad8f0 | 115 | }; |
1da177e4 | 116 | |
0eaa21fd | 117 | static u32 radio_bits_get(struct radio_device *dev) |
1da177e4 | 118 | { |
0eaa21fd JS |
119 | register u16 io=dev->io, l, rdata; |
120 | register u32 data=0; | |
121 | u16 omask; | |
6a2cf8ee | 122 | |
1da177e4 LT |
123 | omask = inw(io + IO_MASK); |
124 | outw(~(STR_CLK | STR_WREN), io + IO_MASK); | |
125 | outw(0, io); | |
126 | udelay(16); | |
127 | ||
128 | for (l=24;l--;) { | |
129 | outw(STR_CLK, io); /* HI state */ | |
130 | udelay(2); | |
4286c6f6 | 131 | if(!l) |
1da177e4 LT |
132 | dev->tuned = inw(io) & STR_MOST ? 0 : 0xffff; |
133 | outw(0, io); /* LO state */ | |
134 | udelay(2); | |
135 | data <<= 1; /* shift data */ | |
136 | rdata = inw(io); | |
137 | if(!l) | |
4286c6f6 | 138 | dev->stereo = rdata & STR_MOST ? |
b6055d7b | 139 | 0 : 1; |
1da177e4 LT |
140 | else |
141 | if(rdata & STR_DATA) | |
142 | data++; | |
143 | udelay(2); | |
144 | } | |
6a2cf8ee | 145 | |
1da177e4 LT |
146 | if(dev->muted) |
147 | outw(STR_WREN, io); | |
6a2cf8ee | 148 | |
1da177e4 LT |
149 | udelay(4); |
150 | outw(omask, io + IO_MASK); | |
6a2cf8ee | 151 | |
1da177e4 LT |
152 | return data & 0x3ffe; |
153 | } | |
154 | ||
0eaa21fd | 155 | static void radio_bits_set(struct radio_device *dev, u32 data) |
1da177e4 | 156 | { |
0eaa21fd JS |
157 | register u16 io=dev->io, l, bits; |
158 | u16 omask, odir; | |
6a2cf8ee | 159 | |
1da177e4 LT |
160 | omask = inw(io + IO_MASK); |
161 | odir = (inw(io + IO_DIR) & ~STR_DATA) | (STR_CLK | STR_WREN); | |
162 | outw(odir | STR_DATA, io + IO_DIR); | |
163 | outw(~(STR_DATA | STR_CLK | STR_WREN), io + IO_MASK); | |
164 | udelay(16); | |
165 | for (l=25;l;l--) { | |
166 | bits = ((data >> 18) & STR_DATA) | STR_WREN ; | |
167 | data <<= 1; /* shift data */ | |
168 | outw(bits, io); /* start strobe */ | |
169 | udelay(2); | |
170 | outw(bits | STR_CLK, io); /* HI level */ | |
171 | udelay(2); | |
172 | outw(bits, io); /* LO level */ | |
173 | udelay(4); | |
174 | } | |
6a2cf8ee | 175 | |
1da177e4 LT |
176 | if(!dev->muted) |
177 | outw(0, io); | |
6a2cf8ee | 178 | |
1da177e4 LT |
179 | udelay(4); |
180 | outw(omask, io + IO_MASK); | |
181 | outw(odir, io + IO_DIR); | |
182 | msleep(125); | |
183 | } | |
184 | ||
d455cf5d DL |
185 | static int vidioc_querycap(struct file *file, void *priv, |
186 | struct v4l2_capability *v) | |
187 | { | |
188 | strlcpy(v->driver, "radio-maestro", sizeof(v->driver)); | |
189 | strlcpy(v->card, "Maestro Radio", sizeof(v->card)); | |
190 | sprintf(v->bus_info, "PCI"); | |
191 | v->version = RADIO_VERSION; | |
192 | v->capabilities = V4L2_CAP_TUNER; | |
193 | return 0; | |
194 | } | |
195 | ||
196 | static int vidioc_g_tuner(struct file *file, void *priv, | |
197 | struct v4l2_tuner *v) | |
1da177e4 LT |
198 | { |
199 | struct video_device *dev = video_devdata(file); | |
f86e7767 | 200 | struct radio_device *card = video_get_drvdata(dev); |
6a2cf8ee | 201 | |
d455cf5d DL |
202 | if (v->index > 0) |
203 | return -EINVAL; | |
204 | ||
205 | (void)radio_bits_get(card); | |
206 | ||
207 | strcpy(v->name, "FM"); | |
208 | v->type = V4L2_TUNER_RADIO; | |
209 | v->rangelow = FREQ_LO; | |
210 | v->rangehigh = FREQ_HI; | |
211 | v->rxsubchans = V4L2_TUNER_SUB_MONO|V4L2_TUNER_SUB_STEREO; | |
212 | v->capability = V4L2_TUNER_CAP_LOW; | |
213 | if(card->stereo) | |
214 | v->audmode = V4L2_TUNER_MODE_STEREO; | |
215 | else | |
216 | v->audmode = V4L2_TUNER_MODE_MONO; | |
217 | v->signal = card->tuned; | |
218 | return 0; | |
219 | } | |
b6055d7b | 220 | |
d455cf5d DL |
221 | static int vidioc_s_tuner(struct file *file, void *priv, |
222 | struct v4l2_tuner *v) | |
223 | { | |
224 | if (v->index > 0) | |
225 | return -EINVAL; | |
226 | return 0; | |
227 | } | |
b6055d7b | 228 | |
d455cf5d DL |
229 | static int vidioc_s_frequency(struct file *file, void *priv, |
230 | struct v4l2_frequency *f) | |
231 | { | |
232 | struct video_device *dev = video_devdata(file); | |
233 | struct radio_device *card = video_get_drvdata(dev); | |
b6055d7b | 234 | |
d455cf5d DL |
235 | if (f->frequency < FREQ_LO || f->frequency > FREQ_HI) |
236 | return -EINVAL; | |
237 | radio_bits_set(card, FREQ2BITS(f->frequency)); | |
238 | return 0; | |
239 | } | |
b6055d7b | 240 | |
d455cf5d DL |
241 | static int vidioc_g_frequency(struct file *file, void *priv, |
242 | struct v4l2_frequency *f) | |
243 | { | |
244 | struct video_device *dev = video_devdata(file); | |
245 | struct radio_device *card = video_get_drvdata(dev); | |
b6055d7b | 246 | |
d455cf5d DL |
247 | f->type = V4L2_TUNER_RADIO; |
248 | f->frequency = BITS2FREQ(radio_bits_get(card)); | |
249 | return 0; | |
250 | } | |
b6055d7b | 251 | |
d455cf5d DL |
252 | static int vidioc_queryctrl(struct file *file, void *priv, |
253 | struct v4l2_queryctrl *qc) | |
254 | { | |
255 | int i; | |
b6055d7b | 256 | |
d455cf5d DL |
257 | for (i = 0; i < ARRAY_SIZE(radio_qctrl); i++) { |
258 | if (qc->id && qc->id == radio_qctrl[i].id) { | |
259 | memcpy(qc, &(radio_qctrl[i]), | |
260 | sizeof(*qc)); | |
b6055d7b MCC |
261 | return 0; |
262 | } | |
d455cf5d DL |
263 | } |
264 | return -EINVAL; | |
265 | } | |
b6055d7b | 266 | |
d455cf5d DL |
267 | static int vidioc_g_ctrl(struct file *file, void *priv, |
268 | struct v4l2_control *ctrl) | |
269 | { | |
270 | struct video_device *dev = video_devdata(file); | |
271 | struct radio_device *card = video_get_drvdata(dev); | |
b6055d7b | 272 | |
d455cf5d DL |
273 | switch (ctrl->id) { |
274 | case V4L2_CID_AUDIO_MUTE: | |
275 | ctrl->value = card->muted; | |
276 | return 0; | |
1da177e4 | 277 | } |
d455cf5d | 278 | return -EINVAL; |
1da177e4 LT |
279 | } |
280 | ||
d455cf5d DL |
281 | static int vidioc_s_ctrl(struct file *file, void *priv, |
282 | struct v4l2_control *ctrl) | |
1da177e4 LT |
283 | { |
284 | struct video_device *dev = video_devdata(file); | |
f86e7767 | 285 | struct radio_device *card = video_get_drvdata(dev); |
d455cf5d DL |
286 | register u16 io = card->io; |
287 | register u16 omask = inw(io + IO_MASK); | |
288 | ||
289 | switch (ctrl->id) { | |
290 | case V4L2_CID_AUDIO_MUTE: | |
291 | outw(~STR_WREN, io + IO_MASK); | |
292 | outw((card->muted = ctrl->value ) ? | |
293 | STR_WREN : 0, io); | |
294 | udelay(4); | |
295 | outw(omask, io + IO_MASK); | |
296 | msleep(125); | |
297 | return 0; | |
298 | } | |
299 | return -EINVAL; | |
300 | } | |
1da177e4 | 301 | |
d455cf5d DL |
302 | static int vidioc_g_audio(struct file *file, void *priv, |
303 | struct v4l2_audio *a) | |
304 | { | |
305 | if (a->index > 1) | |
306 | return -EINVAL; | |
307 | ||
308 | strcpy(a->name, "Radio"); | |
309 | a->capability = V4L2_AUDCAP_STEREO; | |
310 | return 0; | |
311 | } | |
6a2cf8ee | 312 | |
d455cf5d DL |
313 | static int vidioc_g_input(struct file *filp, void *priv, unsigned int *i) |
314 | { | |
315 | *i = 0; | |
316 | return 0; | |
317 | } | |
318 | ||
319 | static int vidioc_s_input(struct file *filp, void *priv, unsigned int i) | |
320 | { | |
321 | if (i != 0) | |
322 | return -EINVAL; | |
323 | return 0; | |
324 | } | |
325 | ||
326 | static int vidioc_s_audio(struct file *file, void *priv, | |
327 | struct v4l2_audio *a) | |
328 | { | |
329 | if (a->index != 0) | |
330 | return -EINVAL; | |
331 | return 0; | |
1da177e4 LT |
332 | } |
333 | ||
0eaa21fd | 334 | static u16 __devinit radio_power_on(struct radio_device *dev) |
1da177e4 | 335 | { |
0eaa21fd JS |
336 | register u16 io = dev->io; |
337 | register u32 ofreq; | |
338 | u16 omask, odir; | |
6a2cf8ee | 339 | |
1da177e4 | 340 | omask = inw(io + IO_MASK); |
6a2cf8ee | 341 | odir = (inw(io + IO_DIR) & ~STR_DATA) | (STR_CLK | STR_WREN); |
1da177e4 | 342 | outw(odir & ~STR_WREN, io + IO_DIR); |
b6055d7b | 343 | dev->muted = inw(io) & STR_WREN ? 0 : 1; |
1da177e4 LT |
344 | outw(odir, io + IO_DIR); |
345 | outw(~(STR_WREN | STR_CLK), io + IO_MASK); | |
346 | outw(dev->muted ? 0 : STR_WREN, io); | |
347 | udelay(16); | |
348 | outw(omask, io + IO_MASK); | |
349 | ofreq = radio_bits_get(dev); | |
6a2cf8ee JS |
350 | |
351 | if ((ofreq < FREQ2BITS(FREQ_LO)) || (ofreq > FREQ2BITS(FREQ_HI))) | |
1da177e4 LT |
352 | ofreq = FREQ2BITS(FREQ_LO); |
353 | radio_bits_set(dev, ofreq); | |
6a2cf8ee | 354 | |
1da177e4 LT |
355 | return (ofreq == radio_bits_get(dev)); |
356 | } | |
357 | ||
a399810c | 358 | static const struct v4l2_ioctl_ops maestro_ioctl_ops = { |
d455cf5d DL |
359 | .vidioc_querycap = vidioc_querycap, |
360 | .vidioc_g_tuner = vidioc_g_tuner, | |
361 | .vidioc_s_tuner = vidioc_s_tuner, | |
362 | .vidioc_g_audio = vidioc_g_audio, | |
363 | .vidioc_s_audio = vidioc_s_audio, | |
364 | .vidioc_g_input = vidioc_g_input, | |
365 | .vidioc_s_input = vidioc_s_input, | |
366 | .vidioc_g_frequency = vidioc_g_frequency, | |
367 | .vidioc_s_frequency = vidioc_s_frequency, | |
368 | .vidioc_queryctrl = vidioc_queryctrl, | |
369 | .vidioc_g_ctrl = vidioc_g_ctrl, | |
370 | .vidioc_s_ctrl = vidioc_s_ctrl, | |
371 | }; | |
372 | ||
a399810c HV |
373 | static struct video_device maestro_radio = { |
374 | .name = "Maestro radio", | |
a399810c HV |
375 | .fops = &maestro_fops, |
376 | .ioctl_ops = &maestro_ioctl_ops, | |
377 | }; | |
378 | ||
89dad8f0 JS |
379 | static int __devinit maestro_probe(struct pci_dev *pdev, |
380 | const struct pci_device_id *ent) | |
1da177e4 | 381 | { |
89dad8f0 JS |
382 | struct radio_device *radio_unit; |
383 | struct video_device *maestro_radio_inst; | |
384 | int retval; | |
385 | ||
386 | retval = pci_enable_device(pdev); | |
387 | if (retval) { | |
388 | dev_err(&pdev->dev, "enabling pci device failed!\n"); | |
389 | goto err; | |
390 | } | |
391 | ||
392 | retval = -ENOMEM; | |
393 | ||
394 | radio_unit = kzalloc(sizeof(*radio_unit), GFP_KERNEL); | |
395 | if (radio_unit == NULL) { | |
396 | dev_err(&pdev->dev, "not enough memory\n"); | |
397 | goto err; | |
398 | } | |
399 | ||
400 | radio_unit->io = pci_resource_start(pdev, 0) + GPIO_DATA; | |
89dad8f0 JS |
401 | |
402 | maestro_radio_inst = video_device_alloc(); | |
403 | if (maestro_radio_inst == NULL) { | |
404 | dev_err(&pdev->dev, "not enough memory\n"); | |
405 | goto errfr; | |
406 | } | |
407 | ||
408 | memcpy(maestro_radio_inst, &maestro_radio, sizeof(maestro_radio)); | |
409 | video_set_drvdata(maestro_radio_inst, radio_unit); | |
410 | pci_set_drvdata(pdev, maestro_radio_inst); | |
411 | ||
cba99ae8 | 412 | retval = video_register_device(maestro_radio_inst, VFL_TYPE_RADIO, radio_nr); |
89dad8f0 JS |
413 | if (retval) { |
414 | printk(KERN_ERR "can't register video device!\n"); | |
415 | goto errfr1; | |
416 | } | |
417 | ||
418 | if (!radio_power_on(radio_unit)) { | |
419 | retval = -EIO; | |
420 | goto errunr; | |
421 | } | |
422 | ||
423 | dev_info(&pdev->dev, "version " DRIVER_VERSION " time " __TIME__ " " | |
6a2cf8ee | 424 | __DATE__ "\n"); |
89dad8f0 JS |
425 | dev_info(&pdev->dev, "radio chip initialized\n"); |
426 | ||
427 | return 0; | |
428 | errunr: | |
429 | video_unregister_device(maestro_radio_inst); | |
430 | errfr1: | |
f37fdf3f | 431 | video_device_release(maestro_radio_inst); |
89dad8f0 JS |
432 | errfr: |
433 | kfree(radio_unit); | |
434 | err: | |
435 | return retval; | |
436 | ||
437 | } | |
438 | ||
439 | static void __devexit maestro_remove(struct pci_dev *pdev) | |
440 | { | |
441 | struct video_device *vdev = pci_get_drvdata(pdev); | |
442 | ||
443 | video_unregister_device(vdev); | |
1da177e4 LT |
444 | } |
445 | ||
89dad8f0 JS |
446 | static int __init maestro_radio_init(void) |
447 | { | |
448 | int retval = pci_register_driver(&maestro_r_driver); | |
449 | ||
450 | if (retval) | |
451 | printk(KERN_ERR "error during registration pci driver\n"); | |
452 | ||
453 | return retval; | |
454 | } | |
455 | ||
456 | static void __exit maestro_radio_exit(void) | |
457 | { | |
458 | pci_unregister_driver(&maestro_r_driver); | |
459 | } | |
460 | ||
461 | module_init(maestro_radio_init); | |
462 | module_exit(maestro_radio_exit); | |
6a2cf8ee JS |
463 | |
464 | MODULE_AUTHOR("Adam Tlalka, atlka@pg.gda.pl"); | |
465 | MODULE_DESCRIPTION("Radio driver for the Maestro PCI sound card radio."); | |
466 | MODULE_LICENSE("GPL"); |