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Commit | Line | Data |
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09c434b8 | 1 | // SPDX-License-Identifier: GPL-2.0-only |
abed623c | 2 | /* SF16-FMI, SF16-FMP and SF16-FMD radio driver for Linux radio support |
1da177e4 LT |
3 | * heavily based on rtrack driver... |
4 | * (c) 1997 M. Kirkwood | |
5 | * (c) 1998 Petr Vandrovec, vandrove@vc.cvut.cz | |
6 | * | |
d9b01449 | 7 | * Fitted to new interface by Alan Cox <alan@lxorguk.ukuu.org.uk> |
1da177e4 LT |
8 | * Made working and cleaned up functions <mikael.hedin@irf.se> |
9 | * Support for ISAPnP by Ladislav Michl <ladis@psi.cz> | |
10 | * | |
11 | * Notes on the hardware | |
12 | * | |
13 | * Frequency control is done digitally -- ie out(port,encodefreq(95.8)); | |
14 | * No volume control - only mute/unmute - you have to use line volume | |
abed623c | 15 | * control on SB-part of SF16-FMI/SF16-FMP/SF16-FMD |
4286c6f6 | 16 | * |
32590819 | 17 | * Converted to V4L2 API by Mauro Carvalho Chehab <mchehab@kernel.org> |
1da177e4 LT |
18 | */ |
19 | ||
20 | #include <linux/kernel.h> /* __setup */ | |
6e6a8b5a | 21 | #include <linux/module.h> /* Modules */ |
1da177e4 | 22 | #include <linux/init.h> /* Initdata */ |
fb911ee8 | 23 | #include <linux/ioport.h> /* request_region */ |
1da177e4 | 24 | #include <linux/delay.h> /* udelay */ |
1da177e4 | 25 | #include <linux/isapnp.h> |
3593cab5 | 26 | #include <linux/mutex.h> |
c41269fd HV |
27 | #include <linux/videodev2.h> /* kernel radio structs */ |
28 | #include <linux/io.h> /* outb, outb_p */ | |
c41269fd HV |
29 | #include <media/v4l2-device.h> |
30 | #include <media/v4l2-ioctl.h> | |
268d06bb | 31 | #include <media/v4l2-ctrls.h> |
0dc5d82d | 32 | #include <media/v4l2-event.h> |
6b39023a | 33 | #include "lm7000.h" |
1da177e4 | 34 | |
c41269fd | 35 | MODULE_AUTHOR("Petr Vandrovec, vandrove@vc.cvut.cz and M. Kirkwood"); |
abed623c | 36 | MODULE_DESCRIPTION("A driver for the SF16-FMI, SF16-FMP and SF16-FMD radio."); |
c41269fd | 37 | MODULE_LICENSE("GPL"); |
29834c1a | 38 | MODULE_VERSION("0.0.3"); |
a2ef73af | 39 | |
c41269fd HV |
40 | static int io = -1; |
41 | static int radio_nr = -1; | |
42 | ||
43 | module_param(io, int, 0); | |
abed623c | 44 | MODULE_PARM_DESC(io, "I/O address of the SF16-FMI/SF16-FMP/SF16-FMD card (0x284 or 0x384)"); |
c41269fd HV |
45 | module_param(radio_nr, int, 0); |
46 | ||
c41269fd | 47 | struct fmi |
1da177e4 | 48 | { |
c41269fd | 49 | struct v4l2_device v4l2_dev; |
268d06bb | 50 | struct v4l2_ctrl_handler hdl; |
c41269fd HV |
51 | struct video_device vdev; |
52 | int io; | |
4b830374 | 53 | bool mute; |
d9ec089e | 54 | u32 curfreq; /* freq in kHz */ |
c41269fd | 55 | struct mutex lock; |
1da177e4 LT |
56 | }; |
57 | ||
c41269fd HV |
58 | static struct fmi fmi_card; |
59 | static struct pnp_dev *dev; | |
24c8f11f | 60 | static bool pnp_attached; |
1da177e4 | 61 | |
96bb42b8 HV |
62 | #define RSF16_MINFREQ (87U * 16000) |
63 | #define RSF16_MAXFREQ (108U * 16000) | |
1da177e4 | 64 | |
6b39023a OZ |
65 | #define FMI_BIT_TUN_CE (1 << 0) |
66 | #define FMI_BIT_TUN_CLK (1 << 1) | |
67 | #define FMI_BIT_TUN_DATA (1 << 2) | |
68 | #define FMI_BIT_VOL_SW (1 << 3) | |
69 | #define FMI_BIT_TUN_STRQ (1 << 4) | |
70 | ||
a5133b17 | 71 | static void fmi_set_pins(void *handle, u8 pins) |
1da177e4 | 72 | { |
6b39023a OZ |
73 | struct fmi *fmi = handle; |
74 | u8 bits = FMI_BIT_TUN_STRQ; | |
75 | ||
76 | if (!fmi->mute) | |
77 | bits |= FMI_BIT_VOL_SW; | |
78 | ||
79 | if (pins & LM7000_DATA) | |
80 | bits |= FMI_BIT_TUN_DATA; | |
81 | if (pins & LM7000_CLK) | |
82 | bits |= FMI_BIT_TUN_CLK; | |
83 | if (pins & LM7000_CE) | |
84 | bits |= FMI_BIT_TUN_CE; | |
85 | ||
86 | mutex_lock(&fmi->lock); | |
87 | outb_p(bits, fmi->io); | |
88 | mutex_unlock(&fmi->lock); | |
1da177e4 LT |
89 | } |
90 | ||
c41269fd | 91 | static inline void fmi_mute(struct fmi *fmi) |
1da177e4 | 92 | { |
c41269fd HV |
93 | mutex_lock(&fmi->lock); |
94 | outb(0x00, fmi->io); | |
95 | mutex_unlock(&fmi->lock); | |
1da177e4 LT |
96 | } |
97 | ||
c41269fd | 98 | static inline void fmi_unmute(struct fmi *fmi) |
1da177e4 | 99 | { |
c41269fd HV |
100 | mutex_lock(&fmi->lock); |
101 | outb(0x08, fmi->io); | |
102 | mutex_unlock(&fmi->lock); | |
1da177e4 LT |
103 | } |
104 | ||
c41269fd | 105 | static inline int fmi_getsigstr(struct fmi *fmi) |
1da177e4 LT |
106 | { |
107 | int val; | |
108 | int res; | |
4286c6f6 | 109 | |
c41269fd | 110 | mutex_lock(&fmi->lock); |
4b830374 | 111 | val = fmi->mute ? 0x00 : 0x08; /* mute/unmute */ |
c41269fd HV |
112 | outb(val, fmi->io); |
113 | outb(val | 0x10, fmi->io); | |
6e6a8b5a | 114 | msleep(143); /* was schedule_timeout(HZ/7) */ |
c41269fd HV |
115 | res = (int)inb(fmi->io + 1); |
116 | outb(val, fmi->io); | |
4286c6f6 | 117 | |
c41269fd | 118 | mutex_unlock(&fmi->lock); |
1da177e4 LT |
119 | return (res & 2) ? 0 : 0xFFFF; |
120 | } | |
121 | ||
d9ec089e OZ |
122 | static void fmi_set_freq(struct fmi *fmi) |
123 | { | |
124 | fmi->curfreq = clamp(fmi->curfreq, RSF16_MINFREQ, RSF16_MAXFREQ); | |
125 | /* rounding in steps of 800 to match the freq | |
126 | that will be used */ | |
127 | lm7000_set_freq((fmi->curfreq / 800) * 800, fmi, fmi_set_pins); | |
128 | } | |
129 | ||
c123b867 DL |
130 | static int vidioc_querycap(struct file *file, void *priv, |
131 | struct v4l2_capability *v) | |
1da177e4 | 132 | { |
c0decac1 MCC |
133 | strscpy(v->driver, "radio-sf16fmi", sizeof(v->driver)); |
134 | strscpy(v->card, "SF16-FMI/FMP/FMD radio", sizeof(v->card)); | |
135 | strscpy(v->bus_info, "ISA:radio-sf16fmi", sizeof(v->bus_info)); | |
c123b867 DL |
136 | return 0; |
137 | } | |
138 | ||
139 | static int vidioc_g_tuner(struct file *file, void *priv, | |
140 | struct v4l2_tuner *v) | |
141 | { | |
c41269fd | 142 | struct fmi *fmi = video_drvdata(file); |
c123b867 DL |
143 | |
144 | if (v->index > 0) | |
145 | return -EINVAL; | |
146 | ||
c0decac1 | 147 | strscpy(v->name, "FM", sizeof(v->name)); |
c123b867 | 148 | v->type = V4L2_TUNER_RADIO; |
1d80db56 HV |
149 | v->rangelow = RSF16_MINFREQ; |
150 | v->rangehigh = RSF16_MAXFREQ; | |
dc47b778 | 151 | v->rxsubchans = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO; |
38092a44 | 152 | v->capability = V4L2_TUNER_CAP_STEREO | V4L2_TUNER_CAP_LOW; |
c123b867 DL |
153 | v->audmode = V4L2_TUNER_MODE_STEREO; |
154 | v->signal = fmi_getsigstr(fmi); | |
155 | return 0; | |
156 | } | |
4286c6f6 | 157 | |
c123b867 | 158 | static int vidioc_s_tuner(struct file *file, void *priv, |
2f73c7c5 | 159 | const struct v4l2_tuner *v) |
c123b867 | 160 | { |
c41269fd | 161 | return v->index ? -EINVAL : 0; |
c123b867 | 162 | } |
a2ef73af | 163 | |
c123b867 | 164 | static int vidioc_s_frequency(struct file *file, void *priv, |
b530a447 | 165 | const struct v4l2_frequency *f) |
c123b867 | 166 | { |
c41269fd | 167 | struct fmi *fmi = video_drvdata(file); |
c123b867 | 168 | |
a3a9e287 HV |
169 | if (f->tuner != 0 || f->type != V4L2_TUNER_RADIO) |
170 | return -EINVAL; | |
d9ec089e OZ |
171 | |
172 | fmi->curfreq = f->frequency; | |
173 | fmi_set_freq(fmi); | |
174 | ||
c123b867 DL |
175 | return 0; |
176 | } | |
a2ef73af | 177 | |
c123b867 DL |
178 | static int vidioc_g_frequency(struct file *file, void *priv, |
179 | struct v4l2_frequency *f) | |
180 | { | |
c41269fd | 181 | struct fmi *fmi = video_drvdata(file); |
a2ef73af | 182 | |
a3a9e287 HV |
183 | if (f->tuner != 0) |
184 | return -EINVAL; | |
c123b867 DL |
185 | f->type = V4L2_TUNER_RADIO; |
186 | f->frequency = fmi->curfreq; | |
c123b867 DL |
187 | return 0; |
188 | } | |
a2ef73af | 189 | |
268d06bb | 190 | static int fmi_s_ctrl(struct v4l2_ctrl *ctrl) |
c123b867 | 191 | { |
268d06bb | 192 | struct fmi *fmi = container_of(ctrl->handler, struct fmi, hdl); |
a2ef73af | 193 | |
c123b867 DL |
194 | switch (ctrl->id) { |
195 | case V4L2_CID_AUDIO_MUTE: | |
268d06bb | 196 | if (ctrl->val) |
c41269fd | 197 | fmi_mute(fmi); |
c123b867 | 198 | else |
c41269fd | 199 | fmi_unmute(fmi); |
268d06bb | 200 | fmi->mute = ctrl->val; |
c123b867 DL |
201 | return 0; |
202 | } | |
203 | return -EINVAL; | |
204 | } | |
205 | ||
268d06bb HV |
206 | static const struct v4l2_ctrl_ops fmi_ctrl_ops = { |
207 | .s_ctrl = fmi_s_ctrl, | |
208 | }; | |
209 | ||
bec43661 | 210 | static const struct v4l2_file_operations fmi_fops = { |
1da177e4 | 211 | .owner = THIS_MODULE, |
0dc5d82d HV |
212 | .open = v4l2_fh_open, |
213 | .release = v4l2_fh_release, | |
214 | .poll = v4l2_ctrl_poll, | |
32958fdd | 215 | .unlocked_ioctl = video_ioctl2, |
1da177e4 LT |
216 | }; |
217 | ||
a399810c | 218 | static const struct v4l2_ioctl_ops fmi_ioctl_ops = { |
c123b867 DL |
219 | .vidioc_querycap = vidioc_querycap, |
220 | .vidioc_g_tuner = vidioc_g_tuner, | |
221 | .vidioc_s_tuner = vidioc_s_tuner, | |
c123b867 DL |
222 | .vidioc_g_frequency = vidioc_g_frequency, |
223 | .vidioc_s_frequency = vidioc_s_frequency, | |
0dc5d82d HV |
224 | .vidioc_log_status = v4l2_ctrl_log_status, |
225 | .vidioc_subscribe_event = v4l2_ctrl_subscribe_event, | |
226 | .vidioc_unsubscribe_event = v4l2_event_unsubscribe, | |
1da177e4 LT |
227 | }; |
228 | ||
229 | /* ladis: this is my card. does any other types exist? */ | |
4c62e976 | 230 | static struct isapnp_device_id id_table[] = { |
abed623c | 231 | /* SF16-FMI */ |
1da177e4 LT |
232 | { ISAPNP_ANY_ID, ISAPNP_ANY_ID, |
233 | ISAPNP_VENDOR('M','F','R'), ISAPNP_FUNCTION(0xad10), 0}, | |
abed623c OZ |
234 | /* SF16-FMD */ |
235 | { ISAPNP_ANY_ID, ISAPNP_ANY_ID, | |
236 | ISAPNP_VENDOR('M','F','R'), ISAPNP_FUNCTION(0xad12), 0}, | |
1da177e4 LT |
237 | { ISAPNP_CARD_END, }, |
238 | }; | |
239 | ||
240 | MODULE_DEVICE_TABLE(isapnp, id_table); | |
241 | ||
a999337b | 242 | static int __init isapnp_fmi_probe(void) |
1da177e4 LT |
243 | { |
244 | int i = 0; | |
245 | ||
246 | while (id_table[i].card_vendor != 0 && dev == NULL) { | |
247 | dev = pnp_find_dev(NULL, id_table[i].vendor, | |
248 | id_table[i].function, NULL); | |
249 | i++; | |
250 | } | |
251 | ||
252 | if (!dev) | |
253 | return -ENODEV; | |
254 | if (pnp_device_attach(dev) < 0) | |
255 | return -EAGAIN; | |
256 | if (pnp_activate_dev(dev) < 0) { | |
c41269fd | 257 | printk(KERN_ERR "radio-sf16fmi: PnP configure failed (out of resources?)\n"); |
1da177e4 LT |
258 | pnp_device_detach(dev); |
259 | return -ENOMEM; | |
260 | } | |
261 | if (!pnp_port_valid(dev, 0)) { | |
262 | pnp_device_detach(dev); | |
263 | return -ENODEV; | |
264 | } | |
265 | ||
266 | i = pnp_port_start(dev, 0); | |
c41269fd | 267 | printk(KERN_INFO "radio-sf16fmi: PnP reports card at %#x\n", i); |
1da177e4 LT |
268 | |
269 | return i; | |
270 | } | |
271 | ||
272 | static int __init fmi_init(void) | |
273 | { | |
c41269fd HV |
274 | struct fmi *fmi = &fmi_card; |
275 | struct v4l2_device *v4l2_dev = &fmi->v4l2_dev; | |
268d06bb | 276 | struct v4l2_ctrl_handler *hdl = &fmi->hdl; |
67cabf50 OZ |
277 | int res, i; |
278 | int probe_ports[] = { 0, 0x284, 0x384 }; | |
279 | ||
280 | if (io < 0) { | |
281 | for (i = 0; i < ARRAY_SIZE(probe_ports); i++) { | |
282 | io = probe_ports[i]; | |
283 | if (io == 0) { | |
284 | io = isapnp_fmi_probe(); | |
285 | if (io < 0) | |
286 | continue; | |
8b4b6818 | 287 | pnp_attached = true; |
67cabf50 OZ |
288 | } |
289 | if (!request_region(io, 2, "radio-sf16fmi")) { | |
290 | if (pnp_attached) | |
291 | pnp_device_detach(dev); | |
292 | io = -1; | |
293 | continue; | |
294 | } | |
295 | if (pnp_attached || | |
296 | ((inb(io) & 0xf9) == 0xf9 && (inb(io) & 0x4) == 0)) | |
297 | break; | |
298 | release_region(io, 2); | |
299 | io = -1; | |
300 | } | |
301 | } else { | |
302 | if (!request_region(io, 2, "radio-sf16fmi")) { | |
303 | printk(KERN_ERR "radio-sf16fmi: port %#x already in use\n", io); | |
304 | return -EBUSY; | |
305 | } | |
306 | if (inb(io) == 0xff) { | |
307 | printk(KERN_ERR "radio-sf16fmi: card not present at %#x\n", io); | |
308 | release_region(io, 2); | |
309 | return -ENODEV; | |
310 | } | |
311 | } | |
312 | if (io < 0) { | |
313 | printk(KERN_ERR "radio-sf16fmi: no cards found\n"); | |
314 | return -ENODEV; | |
315 | } | |
c41269fd | 316 | |
c0decac1 | 317 | strscpy(v4l2_dev->name, "sf16fmi", sizeof(v4l2_dev->name)); |
c41269fd | 318 | fmi->io = io; |
1da177e4 | 319 | |
c41269fd HV |
320 | res = v4l2_device_register(NULL, v4l2_dev); |
321 | if (res < 0) { | |
322 | release_region(fmi->io, 2); | |
67cabf50 OZ |
323 | if (pnp_attached) |
324 | pnp_device_detach(dev); | |
c41269fd HV |
325 | v4l2_err(v4l2_dev, "Could not register v4l2_device\n"); |
326 | return res; | |
327 | } | |
328 | ||
268d06bb HV |
329 | v4l2_ctrl_handler_init(hdl, 1); |
330 | v4l2_ctrl_new_std(hdl, &fmi_ctrl_ops, | |
331 | V4L2_CID_AUDIO_MUTE, 0, 1, 1, 1); | |
332 | v4l2_dev->ctrl_handler = hdl; | |
333 | if (hdl->error) { | |
334 | res = hdl->error; | |
335 | v4l2_err(v4l2_dev, "Could not register controls\n"); | |
336 | v4l2_ctrl_handler_free(hdl); | |
337 | v4l2_device_unregister(v4l2_dev); | |
338 | return res; | |
339 | } | |
340 | ||
c0decac1 | 341 | strscpy(fmi->vdev.name, v4l2_dev->name, sizeof(fmi->vdev.name)); |
c41269fd HV |
342 | fmi->vdev.v4l2_dev = v4l2_dev; |
343 | fmi->vdev.fops = &fmi_fops; | |
344 | fmi->vdev.ioctl_ops = &fmi_ioctl_ops; | |
345 | fmi->vdev.release = video_device_release_empty; | |
e83ce300 | 346 | fmi->vdev.device_caps = V4L2_CAP_TUNER | V4L2_CAP_RADIO; |
c41269fd | 347 | video_set_drvdata(&fmi->vdev, fmi); |
4286c6f6 | 348 | |
c41269fd | 349 | mutex_init(&fmi->lock); |
4286c6f6 | 350 | |
d9ec089e | 351 | /* mute card and set default frequency */ |
8b4b6818 | 352 | fmi->mute = true; |
d9ec089e OZ |
353 | fmi->curfreq = RSF16_MINFREQ; |
354 | fmi_set_freq(fmi); | |
32958fdd | 355 | |
c41269fd | 356 | if (video_register_device(&fmi->vdev, VFL_TYPE_RADIO, radio_nr) < 0) { |
268d06bb | 357 | v4l2_ctrl_handler_free(hdl); |
c41269fd HV |
358 | v4l2_device_unregister(v4l2_dev); |
359 | release_region(fmi->io, 2); | |
67cabf50 OZ |
360 | if (pnp_attached) |
361 | pnp_device_detach(dev); | |
1da177e4 LT |
362 | return -EINVAL; |
363 | } | |
4286c6f6 | 364 | |
c41269fd | 365 | v4l2_info(v4l2_dev, "card driver at 0x%x\n", fmi->io); |
1da177e4 LT |
366 | return 0; |
367 | } | |
368 | ||
c41269fd | 369 | static void __exit fmi_exit(void) |
1da177e4 | 370 | { |
c41269fd HV |
371 | struct fmi *fmi = &fmi_card; |
372 | ||
268d06bb | 373 | v4l2_ctrl_handler_free(&fmi->hdl); |
c41269fd HV |
374 | video_unregister_device(&fmi->vdev); |
375 | v4l2_device_unregister(&fmi->v4l2_dev); | |
376 | release_region(fmi->io, 2); | |
67cabf50 | 377 | if (dev && pnp_attached) |
1da177e4 LT |
378 | pnp_device_detach(dev); |
379 | } | |
380 | ||
381 | module_init(fmi_init); | |
c41269fd | 382 | module_exit(fmi_exit); |