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Commit | Line | Data |
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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> | |
087c6184 | 25 | #include <linux/version.h> /* for KERNEL_VERSION MACRO */ |
1da177e4 | 26 | #include <linux/pci.h> |
b6055d7b | 27 | #include <linux/videodev2.h> |
087c6184 | 28 | #include <linux/io.h> |
5a0e3ad6 | 29 | #include <linux/slab.h> |
087c6184 | 30 | #include <media/v4l2-device.h> |
35ea11ff | 31 | #include <media/v4l2-ioctl.h> |
3593cab5 | 32 | |
087c6184 HV |
33 | MODULE_AUTHOR("Adam Tlalka, atlka@pg.gda.pl"); |
34 | MODULE_DESCRIPTION("Radio driver for the Maestro PCI sound card radio."); | |
35 | MODULE_LICENSE("GPL"); | |
b6055d7b | 36 | |
087c6184 HV |
37 | static int radio_nr = -1; |
38 | module_param(radio_nr, int, 0); | |
39 | ||
40 | #define RADIO_VERSION KERNEL_VERSION(0, 0, 6) | |
41 | #define DRIVER_VERSION "0.06" | |
1da177e4 | 42 | |
6a2cf8ee | 43 | #define GPIO_DATA 0x60 /* port offset from ESS_IO_BASE */ |
1da177e4 LT |
44 | |
45 | #define IO_MASK 4 /* mask register offset from GPIO_DATA | |
46 | bits 1=unmask write to given bit */ | |
47 | #define IO_DIR 8 /* direction register offset from GPIO_DATA | |
48 | bits 0/1=read/write direction */ | |
49 | ||
6a2cf8ee JS |
50 | #define GPIO6 0x0040 /* mask bits for GPIO lines */ |
51 | #define GPIO7 0x0080 | |
52 | #define GPIO8 0x0100 | |
53 | #define GPIO9 0x0200 | |
1da177e4 | 54 | |
6a2cf8ee JS |
55 | #define STR_DATA GPIO6 /* radio TEA5757 pins and GPIO bits */ |
56 | #define STR_CLK GPIO7 | |
57 | #define STR_WREN GPIO8 | |
58 | #define STR_MOST GPIO9 | |
1da177e4 LT |
59 | |
60 | #define FREQ_LO 50*16000 | |
61 | #define FREQ_HI 150*16000 | |
62 | ||
6a2cf8ee JS |
63 | #define FREQ_IF 171200 /* 10.7*16000 */ |
64 | #define FREQ_STEP 200 /* 12.5*16 */ | |
1da177e4 LT |
65 | |
66 | #define FREQ2BITS(x) ((((unsigned int)(x)+FREQ_IF+(FREQ_STEP<<1))\ | |
67 | /(FREQ_STEP<<2))<<2) /* (x==fmhz*16*1000) -> bits */ | |
68 | ||
69 | #define BITS2FREQ(x) ((x) * FREQ_STEP - FREQ_IF) | |
70 | ||
087c6184 HV |
71 | struct maestro { |
72 | struct v4l2_device v4l2_dev; | |
73 | struct video_device vdev; | |
74 | struct pci_dev *pdev; | |
75 | struct mutex lock; | |
1da177e4 | 76 | |
087c6184 HV |
77 | u16 io; /* base of Maestro card radio io (GPIO_DATA)*/ |
78 | u16 muted; /* VIDEO_AUDIO_MUTE */ | |
79 | u16 stereo; /* VIDEO_TUNER_STEREO_ON */ | |
80 | u16 tuned; /* signal strength (0 or 0xffff) */ | |
81 | }; | |
3ca685aa | 82 | |
087c6184 | 83 | static inline struct maestro *to_maestro(struct v4l2_device *v4l2_dev) |
3ca685aa | 84 | { |
087c6184 | 85 | return container_of(v4l2_dev, struct maestro, v4l2_dev); |
3ca685aa HV |
86 | } |
87 | ||
087c6184 | 88 | static u32 radio_bits_get(struct maestro *dev) |
3ca685aa | 89 | { |
087c6184 HV |
90 | u16 io = dev->io, l, rdata; |
91 | u32 data = 0; | |
0eaa21fd | 92 | u16 omask; |
6a2cf8ee | 93 | |
1da177e4 LT |
94 | omask = inw(io + IO_MASK); |
95 | outw(~(STR_CLK | STR_WREN), io + IO_MASK); | |
96 | outw(0, io); | |
97 | udelay(16); | |
98 | ||
087c6184 | 99 | for (l = 24; l--;) { |
1da177e4 LT |
100 | outw(STR_CLK, io); /* HI state */ |
101 | udelay(2); | |
087c6184 | 102 | if (!l) |
1da177e4 LT |
103 | dev->tuned = inw(io) & STR_MOST ? 0 : 0xffff; |
104 | outw(0, io); /* LO state */ | |
105 | udelay(2); | |
106 | data <<= 1; /* shift data */ | |
107 | rdata = inw(io); | |
087c6184 HV |
108 | if (!l) |
109 | dev->stereo = (rdata & STR_MOST) ? 0 : 1; | |
110 | else if (rdata & STR_DATA) | |
111 | data++; | |
1da177e4 LT |
112 | udelay(2); |
113 | } | |
6a2cf8ee | 114 | |
087c6184 | 115 | if (dev->muted) |
1da177e4 | 116 | outw(STR_WREN, io); |
6a2cf8ee | 117 | |
1da177e4 LT |
118 | udelay(4); |
119 | outw(omask, io + IO_MASK); | |
6a2cf8ee | 120 | |
1da177e4 LT |
121 | return data & 0x3ffe; |
122 | } | |
123 | ||
087c6184 | 124 | static void radio_bits_set(struct maestro *dev, u32 data) |
1da177e4 | 125 | { |
087c6184 | 126 | u16 io = dev->io, l, bits; |
0eaa21fd | 127 | u16 omask, odir; |
6a2cf8ee | 128 | |
1da177e4 | 129 | omask = inw(io + IO_MASK); |
087c6184 | 130 | odir = (inw(io + IO_DIR) & ~STR_DATA) | (STR_CLK | STR_WREN); |
1da177e4 LT |
131 | outw(odir | STR_DATA, io + IO_DIR); |
132 | outw(~(STR_DATA | STR_CLK | STR_WREN), io + IO_MASK); | |
133 | udelay(16); | |
087c6184 HV |
134 | for (l = 25; l; l--) { |
135 | bits = ((data >> 18) & STR_DATA) | STR_WREN; | |
1da177e4 LT |
136 | data <<= 1; /* shift data */ |
137 | outw(bits, io); /* start strobe */ | |
138 | udelay(2); | |
139 | outw(bits | STR_CLK, io); /* HI level */ | |
140 | udelay(2); | |
141 | outw(bits, io); /* LO level */ | |
142 | udelay(4); | |
143 | } | |
6a2cf8ee | 144 | |
087c6184 | 145 | if (!dev->muted) |
1da177e4 | 146 | outw(0, io); |
6a2cf8ee | 147 | |
1da177e4 LT |
148 | udelay(4); |
149 | outw(omask, io + IO_MASK); | |
150 | outw(odir, io + IO_DIR); | |
151 | msleep(125); | |
152 | } | |
153 | ||
d455cf5d DL |
154 | static int vidioc_querycap(struct file *file, void *priv, |
155 | struct v4l2_capability *v) | |
156 | { | |
087c6184 HV |
157 | struct maestro *dev = video_drvdata(file); |
158 | ||
d455cf5d DL |
159 | strlcpy(v->driver, "radio-maestro", sizeof(v->driver)); |
160 | strlcpy(v->card, "Maestro Radio", sizeof(v->card)); | |
087c6184 | 161 | snprintf(v->bus_info, sizeof(v->bus_info), "PCI:%s", pci_name(dev->pdev)); |
d455cf5d | 162 | v->version = RADIO_VERSION; |
087c6184 | 163 | v->capabilities = V4L2_CAP_TUNER | V4L2_CAP_RADIO; |
d455cf5d DL |
164 | return 0; |
165 | } | |
166 | ||
167 | static int vidioc_g_tuner(struct file *file, void *priv, | |
168 | struct v4l2_tuner *v) | |
1da177e4 | 169 | { |
087c6184 | 170 | struct maestro *dev = video_drvdata(file); |
6a2cf8ee | 171 | |
d455cf5d DL |
172 | if (v->index > 0) |
173 | return -EINVAL; | |
174 | ||
087c6184 HV |
175 | mutex_lock(&dev->lock); |
176 | radio_bits_get(dev); | |
d455cf5d | 177 | |
087c6184 | 178 | strlcpy(v->name, "FM", sizeof(v->name)); |
d455cf5d DL |
179 | v->type = V4L2_TUNER_RADIO; |
180 | v->rangelow = FREQ_LO; | |
181 | v->rangehigh = FREQ_HI; | |
087c6184 | 182 | v->rxsubchans = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO; |
d455cf5d | 183 | v->capability = V4L2_TUNER_CAP_LOW; |
087c6184 | 184 | if (dev->stereo) |
d455cf5d DL |
185 | v->audmode = V4L2_TUNER_MODE_STEREO; |
186 | else | |
187 | v->audmode = V4L2_TUNER_MODE_MONO; | |
087c6184 HV |
188 | v->signal = dev->tuned; |
189 | mutex_unlock(&dev->lock); | |
d455cf5d DL |
190 | return 0; |
191 | } | |
b6055d7b | 192 | |
d455cf5d DL |
193 | static int vidioc_s_tuner(struct file *file, void *priv, |
194 | struct v4l2_tuner *v) | |
195 | { | |
087c6184 | 196 | return v->index ? -EINVAL : 0; |
d455cf5d | 197 | } |
b6055d7b | 198 | |
d455cf5d DL |
199 | static int vidioc_s_frequency(struct file *file, void *priv, |
200 | struct v4l2_frequency *f) | |
201 | { | |
087c6184 | 202 | struct maestro *dev = video_drvdata(file); |
b6055d7b | 203 | |
a3a9e287 HV |
204 | if (f->tuner != 0 || f->type != V4L2_TUNER_RADIO) |
205 | return -EINVAL; | |
d455cf5d DL |
206 | if (f->frequency < FREQ_LO || f->frequency > FREQ_HI) |
207 | return -EINVAL; | |
087c6184 HV |
208 | mutex_lock(&dev->lock); |
209 | radio_bits_set(dev, FREQ2BITS(f->frequency)); | |
210 | mutex_unlock(&dev->lock); | |
d455cf5d DL |
211 | return 0; |
212 | } | |
b6055d7b | 213 | |
d455cf5d DL |
214 | static int vidioc_g_frequency(struct file *file, void *priv, |
215 | struct v4l2_frequency *f) | |
216 | { | |
087c6184 | 217 | struct maestro *dev = video_drvdata(file); |
b6055d7b | 218 | |
a3a9e287 HV |
219 | if (f->tuner != 0) |
220 | return -EINVAL; | |
d455cf5d | 221 | f->type = V4L2_TUNER_RADIO; |
087c6184 HV |
222 | mutex_lock(&dev->lock); |
223 | f->frequency = BITS2FREQ(radio_bits_get(dev)); | |
224 | mutex_unlock(&dev->lock); | |
d455cf5d DL |
225 | return 0; |
226 | } | |
b6055d7b | 227 | |
d455cf5d DL |
228 | static int vidioc_queryctrl(struct file *file, void *priv, |
229 | struct v4l2_queryctrl *qc) | |
230 | { | |
087c6184 HV |
231 | switch (qc->id) { |
232 | case V4L2_CID_AUDIO_MUTE: | |
233 | return v4l2_ctrl_query_fill(qc, 0, 1, 1, 1); | |
d455cf5d DL |
234 | } |
235 | return -EINVAL; | |
236 | } | |
b6055d7b | 237 | |
d455cf5d DL |
238 | static int vidioc_g_ctrl(struct file *file, void *priv, |
239 | struct v4l2_control *ctrl) | |
240 | { | |
087c6184 | 241 | struct maestro *dev = video_drvdata(file); |
b6055d7b | 242 | |
d455cf5d DL |
243 | switch (ctrl->id) { |
244 | case V4L2_CID_AUDIO_MUTE: | |
087c6184 | 245 | ctrl->value = dev->muted; |
d455cf5d | 246 | return 0; |
1da177e4 | 247 | } |
d455cf5d | 248 | return -EINVAL; |
1da177e4 LT |
249 | } |
250 | ||
d455cf5d DL |
251 | static int vidioc_s_ctrl(struct file *file, void *priv, |
252 | struct v4l2_control *ctrl) | |
1da177e4 | 253 | { |
087c6184 HV |
254 | struct maestro *dev = video_drvdata(file); |
255 | u16 io = dev->io; | |
256 | u16 omask; | |
d455cf5d DL |
257 | |
258 | switch (ctrl->id) { | |
259 | case V4L2_CID_AUDIO_MUTE: | |
087c6184 HV |
260 | mutex_lock(&dev->lock); |
261 | omask = inw(io + IO_MASK); | |
d455cf5d | 262 | outw(~STR_WREN, io + IO_MASK); |
087c6184 HV |
263 | dev->muted = ctrl->value; |
264 | outw(dev->muted ? STR_WREN : 0, io); | |
d455cf5d DL |
265 | udelay(4); |
266 | outw(omask, io + IO_MASK); | |
267 | msleep(125); | |
087c6184 | 268 | mutex_unlock(&dev->lock); |
d455cf5d DL |
269 | return 0; |
270 | } | |
271 | return -EINVAL; | |
272 | } | |
1da177e4 | 273 | |
087c6184 HV |
274 | static int vidioc_g_input(struct file *filp, void *priv, unsigned int *i) |
275 | { | |
276 | *i = 0; | |
277 | return 0; | |
278 | } | |
279 | ||
280 | static int vidioc_s_input(struct file *filp, void *priv, unsigned int i) | |
281 | { | |
282 | return i ? -EINVAL : 0; | |
283 | } | |
284 | ||
d455cf5d DL |
285 | static int vidioc_g_audio(struct file *file, void *priv, |
286 | struct v4l2_audio *a) | |
287 | { | |
087c6184 HV |
288 | a->index = 0; |
289 | strlcpy(a->name, "Radio", sizeof(a->name)); | |
d455cf5d DL |
290 | a->capability = V4L2_AUDCAP_STEREO; |
291 | return 0; | |
292 | } | |
6a2cf8ee | 293 | |
087c6184 HV |
294 | static int vidioc_s_audio(struct file *file, void *priv, |
295 | struct v4l2_audio *a) | |
d455cf5d | 296 | { |
087c6184 | 297 | return a->index ? -EINVAL : 0; |
d455cf5d DL |
298 | } |
299 | ||
087c6184 HV |
300 | static const struct v4l2_file_operations maestro_fops = { |
301 | .owner = THIS_MODULE, | |
087c6184 HV |
302 | .ioctl = video_ioctl2, |
303 | }; | |
304 | ||
305 | static const struct v4l2_ioctl_ops maestro_ioctl_ops = { | |
306 | .vidioc_querycap = vidioc_querycap, | |
307 | .vidioc_g_tuner = vidioc_g_tuner, | |
308 | .vidioc_s_tuner = vidioc_s_tuner, | |
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, | |
313 | .vidioc_g_frequency = vidioc_g_frequency, | |
314 | .vidioc_s_frequency = vidioc_s_frequency, | |
315 | .vidioc_queryctrl = vidioc_queryctrl, | |
316 | .vidioc_g_ctrl = vidioc_g_ctrl, | |
317 | .vidioc_s_ctrl = vidioc_s_ctrl, | |
318 | }; | |
319 | ||
320 | static u16 __devinit radio_power_on(struct maestro *dev) | |
1da177e4 | 321 | { |
0eaa21fd JS |
322 | register u16 io = dev->io; |
323 | register u32 ofreq; | |
324 | u16 omask, odir; | |
6a2cf8ee | 325 | |
1da177e4 | 326 | omask = inw(io + IO_MASK); |
6a2cf8ee | 327 | odir = (inw(io + IO_DIR) & ~STR_DATA) | (STR_CLK | STR_WREN); |
1da177e4 | 328 | outw(odir & ~STR_WREN, io + IO_DIR); |
b6055d7b | 329 | dev->muted = inw(io) & STR_WREN ? 0 : 1; |
1da177e4 LT |
330 | outw(odir, io + IO_DIR); |
331 | outw(~(STR_WREN | STR_CLK), io + IO_MASK); | |
332 | outw(dev->muted ? 0 : STR_WREN, io); | |
333 | udelay(16); | |
334 | outw(omask, io + IO_MASK); | |
335 | ofreq = radio_bits_get(dev); | |
6a2cf8ee JS |
336 | |
337 | if ((ofreq < FREQ2BITS(FREQ_LO)) || (ofreq > FREQ2BITS(FREQ_HI))) | |
1da177e4 LT |
338 | ofreq = FREQ2BITS(FREQ_LO); |
339 | radio_bits_set(dev, ofreq); | |
6a2cf8ee | 340 | |
1da177e4 LT |
341 | return (ofreq == radio_bits_get(dev)); |
342 | } | |
343 | ||
89dad8f0 JS |
344 | static int __devinit maestro_probe(struct pci_dev *pdev, |
345 | const struct pci_device_id *ent) | |
1da177e4 | 346 | { |
087c6184 HV |
347 | struct maestro *dev; |
348 | struct v4l2_device *v4l2_dev; | |
89dad8f0 JS |
349 | int retval; |
350 | ||
351 | retval = pci_enable_device(pdev); | |
352 | if (retval) { | |
353 | dev_err(&pdev->dev, "enabling pci device failed!\n"); | |
354 | goto err; | |
355 | } | |
356 | ||
357 | retval = -ENOMEM; | |
358 | ||
087c6184 HV |
359 | dev = kzalloc(sizeof(*dev), GFP_KERNEL); |
360 | if (dev == NULL) { | |
89dad8f0 JS |
361 | dev_err(&pdev->dev, "not enough memory\n"); |
362 | goto err; | |
363 | } | |
364 | ||
087c6184 HV |
365 | v4l2_dev = &dev->v4l2_dev; |
366 | mutex_init(&dev->lock); | |
367 | dev->pdev = pdev; | |
89dad8f0 | 368 | |
087c6184 HV |
369 | strlcpy(v4l2_dev->name, "maestro", sizeof(v4l2_dev->name)); |
370 | ||
371 | retval = v4l2_device_register(&pdev->dev, v4l2_dev); | |
372 | if (retval < 0) { | |
373 | v4l2_err(v4l2_dev, "Could not register v4l2_device\n"); | |
89dad8f0 JS |
374 | goto errfr; |
375 | } | |
376 | ||
087c6184 | 377 | dev->io = pci_resource_start(pdev, 0) + GPIO_DATA; |
89dad8f0 | 378 | |
087c6184 HV |
379 | strlcpy(dev->vdev.name, v4l2_dev->name, sizeof(dev->vdev.name)); |
380 | dev->vdev.v4l2_dev = v4l2_dev; | |
381 | dev->vdev.fops = &maestro_fops; | |
382 | dev->vdev.ioctl_ops = &maestro_ioctl_ops; | |
383 | dev->vdev.release = video_device_release_empty; | |
384 | video_set_drvdata(&dev->vdev, dev); | |
385 | ||
386 | retval = video_register_device(&dev->vdev, VFL_TYPE_RADIO, radio_nr); | |
89dad8f0 | 387 | if (retval) { |
087c6184 | 388 | v4l2_err(v4l2_dev, "can't register video device!\n"); |
89dad8f0 JS |
389 | goto errfr1; |
390 | } | |
391 | ||
087c6184 | 392 | if (!radio_power_on(dev)) { |
89dad8f0 JS |
393 | retval = -EIO; |
394 | goto errunr; | |
395 | } | |
396 | ||
087c6184 | 397 | v4l2_info(v4l2_dev, "version " DRIVER_VERSION "\n"); |
89dad8f0 JS |
398 | |
399 | return 0; | |
400 | errunr: | |
087c6184 | 401 | video_unregister_device(&dev->vdev); |
89dad8f0 | 402 | errfr1: |
087c6184 | 403 | v4l2_device_unregister(v4l2_dev); |
89dad8f0 | 404 | errfr: |
087c6184 | 405 | kfree(dev); |
89dad8f0 JS |
406 | err: |
407 | return retval; | |
408 | ||
409 | } | |
410 | ||
411 | static void __devexit maestro_remove(struct pci_dev *pdev) | |
412 | { | |
087c6184 HV |
413 | struct v4l2_device *v4l2_dev = dev_get_drvdata(&pdev->dev); |
414 | struct maestro *dev = to_maestro(v4l2_dev); | |
89dad8f0 | 415 | |
087c6184 HV |
416 | video_unregister_device(&dev->vdev); |
417 | v4l2_device_unregister(&dev->v4l2_dev); | |
1da177e4 LT |
418 | } |
419 | ||
087c6184 HV |
420 | static struct pci_device_id maestro_r_pci_tbl[] = { |
421 | { PCI_DEVICE(PCI_VENDOR_ID_ESS, PCI_DEVICE_ID_ESS_ESS1968), | |
422 | .class = PCI_CLASS_MULTIMEDIA_AUDIO << 8, | |
423 | .class_mask = 0xffff00 }, | |
424 | { PCI_DEVICE(PCI_VENDOR_ID_ESS, PCI_DEVICE_ID_ESS_ESS1978), | |
425 | .class = PCI_CLASS_MULTIMEDIA_AUDIO << 8, | |
426 | .class_mask = 0xffff00 }, | |
427 | { 0 } | |
428 | }; | |
429 | MODULE_DEVICE_TABLE(pci, maestro_r_pci_tbl); | |
430 | ||
431 | static struct pci_driver maestro_r_driver = { | |
432 | .name = "maestro_radio", | |
433 | .id_table = maestro_r_pci_tbl, | |
434 | .probe = maestro_probe, | |
435 | .remove = __devexit_p(maestro_remove), | |
436 | }; | |
437 | ||
89dad8f0 JS |
438 | static int __init maestro_radio_init(void) |
439 | { | |
440 | int retval = pci_register_driver(&maestro_r_driver); | |
441 | ||
442 | if (retval) | |
443 | printk(KERN_ERR "error during registration pci driver\n"); | |
444 | ||
445 | return retval; | |
446 | } | |
447 | ||
448 | static void __exit maestro_radio_exit(void) | |
449 | { | |
450 | pci_unregister_driver(&maestro_r_driver); | |
451 | } | |
452 | ||
453 | module_init(maestro_radio_init); | |
454 | module_exit(maestro_radio_exit); |