Commit | Line | Data |
---|---|---|
abed623c | 1 | /* SF16-FMI, SF16-FMP and SF16-FMD radio driver for Linux radio support |
1da177e4 LT |
2 | * heavily based on rtrack driver... |
3 | * (c) 1997 M. Kirkwood | |
4 | * (c) 1998 Petr Vandrovec, vandrove@vc.cvut.cz | |
5 | * | |
d9b01449 | 6 | * Fitted to new interface by Alan Cox <alan@lxorguk.ukuu.org.uk> |
1da177e4 LT |
7 | * Made working and cleaned up functions <mikael.hedin@irf.se> |
8 | * Support for ISAPnP by Ladislav Michl <ladis@psi.cz> | |
9 | * | |
10 | * Notes on the hardware | |
11 | * | |
12 | * Frequency control is done digitally -- ie out(port,encodefreq(95.8)); | |
13 | * No volume control - only mute/unmute - you have to use line volume | |
abed623c | 14 | * control on SB-part of SF16-FMI/SF16-FMP/SF16-FMD |
4286c6f6 | 15 | * |
a2ef73af | 16 | * Converted to V4L2 API by Mauro Carvalho Chehab <mchehab@infradead.org> |
1da177e4 LT |
17 | */ |
18 | ||
19 | #include <linux/kernel.h> /* __setup */ | |
20 | #include <linux/module.h> /* Modules */ | |
21 | #include <linux/init.h> /* Initdata */ | |
fb911ee8 | 22 | #include <linux/ioport.h> /* request_region */ |
1da177e4 | 23 | #include <linux/delay.h> /* udelay */ |
1da177e4 | 24 | #include <linux/isapnp.h> |
3593cab5 | 25 | #include <linux/mutex.h> |
c41269fd HV |
26 | #include <linux/videodev2.h> /* kernel radio structs */ |
27 | #include <linux/io.h> /* outb, outb_p */ | |
c41269fd HV |
28 | #include <media/v4l2-device.h> |
29 | #include <media/v4l2-ioctl.h> | |
268d06bb | 30 | #include <media/v4l2-ctrls.h> |
0dc5d82d | 31 | #include <media/v4l2-event.h> |
6b39023a | 32 | #include "lm7000.h" |
1da177e4 | 33 | |
c41269fd | 34 | MODULE_AUTHOR("Petr Vandrovec, vandrove@vc.cvut.cz and M. Kirkwood"); |
abed623c | 35 | MODULE_DESCRIPTION("A driver for the SF16-FMI, SF16-FMP and SF16-FMD radio."); |
c41269fd | 36 | MODULE_LICENSE("GPL"); |
29834c1a | 37 | MODULE_VERSION("0.0.3"); |
a2ef73af | 38 | |
c41269fd HV |
39 | static int io = -1; |
40 | static int radio_nr = -1; | |
41 | ||
42 | module_param(io, int, 0); | |
abed623c | 43 | MODULE_PARM_DESC(io, "I/O address of the SF16-FMI/SF16-FMP/SF16-FMD card (0x284 or 0x384)"); |
c41269fd HV |
44 | module_param(radio_nr, int, 0); |
45 | ||
c41269fd | 46 | struct fmi |
1da177e4 | 47 | { |
c41269fd | 48 | struct v4l2_device v4l2_dev; |
268d06bb | 49 | struct v4l2_ctrl_handler hdl; |
c41269fd HV |
50 | struct video_device vdev; |
51 | int io; | |
4b830374 | 52 | bool mute; |
d9ec089e | 53 | u32 curfreq; /* freq in kHz */ |
c41269fd | 54 | struct mutex lock; |
1da177e4 LT |
55 | }; |
56 | ||
c41269fd HV |
57 | static struct fmi fmi_card; |
58 | static struct pnp_dev *dev; | |
24c8f11f | 59 | static bool pnp_attached; |
1da177e4 | 60 | |
96bb42b8 HV |
61 | #define RSF16_MINFREQ (87U * 16000) |
62 | #define RSF16_MAXFREQ (108U * 16000) | |
1da177e4 | 63 | |
6b39023a OZ |
64 | #define FMI_BIT_TUN_CE (1 << 0) |
65 | #define FMI_BIT_TUN_CLK (1 << 1) | |
66 | #define FMI_BIT_TUN_DATA (1 << 2) | |
67 | #define FMI_BIT_VOL_SW (1 << 3) | |
68 | #define FMI_BIT_TUN_STRQ (1 << 4) | |
69 | ||
a5133b17 | 70 | static void fmi_set_pins(void *handle, u8 pins) |
1da177e4 | 71 | { |
6b39023a OZ |
72 | struct fmi *fmi = handle; |
73 | u8 bits = FMI_BIT_TUN_STRQ; | |
74 | ||
75 | if (!fmi->mute) | |
76 | bits |= FMI_BIT_VOL_SW; | |
77 | ||
78 | if (pins & LM7000_DATA) | |
79 | bits |= FMI_BIT_TUN_DATA; | |
80 | if (pins & LM7000_CLK) | |
81 | bits |= FMI_BIT_TUN_CLK; | |
82 | if (pins & LM7000_CE) | |
83 | bits |= FMI_BIT_TUN_CE; | |
84 | ||
85 | mutex_lock(&fmi->lock); | |
86 | outb_p(bits, fmi->io); | |
87 | mutex_unlock(&fmi->lock); | |
1da177e4 LT |
88 | } |
89 | ||
c41269fd | 90 | static inline void fmi_mute(struct fmi *fmi) |
1da177e4 | 91 | { |
c41269fd HV |
92 | mutex_lock(&fmi->lock); |
93 | outb(0x00, fmi->io); | |
94 | mutex_unlock(&fmi->lock); | |
1da177e4 LT |
95 | } |
96 | ||
c41269fd | 97 | static inline void fmi_unmute(struct fmi *fmi) |
1da177e4 | 98 | { |
c41269fd HV |
99 | mutex_lock(&fmi->lock); |
100 | outb(0x08, fmi->io); | |
101 | mutex_unlock(&fmi->lock); | |
1da177e4 LT |
102 | } |
103 | ||
c41269fd | 104 | static inline int fmi_getsigstr(struct fmi *fmi) |
1da177e4 LT |
105 | { |
106 | int val; | |
107 | int res; | |
4286c6f6 | 108 | |
c41269fd | 109 | mutex_lock(&fmi->lock); |
4b830374 | 110 | val = fmi->mute ? 0x00 : 0x08; /* mute/unmute */ |
c41269fd HV |
111 | outb(val, fmi->io); |
112 | outb(val | 0x10, fmi->io); | |
1da177e4 | 113 | msleep(143); /* was schedule_timeout(HZ/7) */ |
c41269fd HV |
114 | res = (int)inb(fmi->io + 1); |
115 | outb(val, fmi->io); | |
4286c6f6 | 116 | |
c41269fd | 117 | mutex_unlock(&fmi->lock); |
1da177e4 LT |
118 | return (res & 2) ? 0 : 0xFFFF; |
119 | } | |
120 | ||
d9ec089e OZ |
121 | static void fmi_set_freq(struct fmi *fmi) |
122 | { | |
123 | fmi->curfreq = clamp(fmi->curfreq, RSF16_MINFREQ, RSF16_MAXFREQ); | |
124 | /* rounding in steps of 800 to match the freq | |
125 | that will be used */ | |
126 | lm7000_set_freq((fmi->curfreq / 800) * 800, fmi, fmi_set_pins); | |
127 | } | |
128 | ||
c123b867 DL |
129 | static int vidioc_querycap(struct file *file, void *priv, |
130 | struct v4l2_capability *v) | |
1da177e4 | 131 | { |
c123b867 | 132 | strlcpy(v->driver, "radio-sf16fmi", sizeof(v->driver)); |
abed623c | 133 | strlcpy(v->card, "SF16-FMI/FMP/FMD radio", sizeof(v->card)); |
9291682e | 134 | strlcpy(v->bus_info, "ISA:radio-sf16fmi", sizeof(v->bus_info)); |
f90842d6 HV |
135 | v->device_caps = V4L2_CAP_TUNER | V4L2_CAP_RADIO; |
136 | v->capabilities = v->device_caps | V4L2_CAP_DEVICE_CAPS; | |
c123b867 DL |
137 | return 0; |
138 | } | |
139 | ||
140 | static int vidioc_g_tuner(struct file *file, void *priv, | |
141 | struct v4l2_tuner *v) | |
142 | { | |
c41269fd | 143 | struct fmi *fmi = video_drvdata(file); |
c123b867 DL |
144 | |
145 | if (v->index > 0) | |
146 | return -EINVAL; | |
147 | ||
c41269fd | 148 | strlcpy(v->name, "FM", sizeof(v->name)); |
c123b867 | 149 | v->type = V4L2_TUNER_RADIO; |
1d80db56 HV |
150 | v->rangelow = RSF16_MINFREQ; |
151 | v->rangehigh = RSF16_MAXFREQ; | |
dc47b778 | 152 | v->rxsubchans = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO; |
38092a44 | 153 | v->capability = V4L2_TUNER_CAP_STEREO | V4L2_TUNER_CAP_LOW; |
c123b867 DL |
154 | v->audmode = V4L2_TUNER_MODE_STEREO; |
155 | v->signal = fmi_getsigstr(fmi); | |
156 | return 0; | |
157 | } | |
4286c6f6 | 158 | |
c123b867 | 159 | static int vidioc_s_tuner(struct file *file, void *priv, |
2f73c7c5 | 160 | const struct v4l2_tuner *v) |
c123b867 | 161 | { |
c41269fd | 162 | return v->index ? -EINVAL : 0; |
c123b867 | 163 | } |
a2ef73af | 164 | |
c123b867 | 165 | static int vidioc_s_frequency(struct file *file, void *priv, |
b530a447 | 166 | const struct v4l2_frequency *f) |
c123b867 | 167 | { |
c41269fd | 168 | struct fmi *fmi = video_drvdata(file); |
c123b867 | 169 | |
a3a9e287 HV |
170 | if (f->tuner != 0 || f->type != V4L2_TUNER_RADIO) |
171 | return -EINVAL; | |
d9ec089e OZ |
172 | |
173 | fmi->curfreq = f->frequency; | |
174 | fmi_set_freq(fmi); | |
175 | ||
c123b867 DL |
176 | return 0; |
177 | } | |
a2ef73af | 178 | |
c123b867 DL |
179 | static int vidioc_g_frequency(struct file *file, void *priv, |
180 | struct v4l2_frequency *f) | |
181 | { | |
c41269fd | 182 | struct fmi *fmi = video_drvdata(file); |
a2ef73af | 183 | |
a3a9e287 HV |
184 | if (f->tuner != 0) |
185 | return -EINVAL; | |
c123b867 DL |
186 | f->type = V4L2_TUNER_RADIO; |
187 | f->frequency = fmi->curfreq; | |
c123b867 DL |
188 | return 0; |
189 | } | |
a2ef73af | 190 | |
268d06bb | 191 | static int fmi_s_ctrl(struct v4l2_ctrl *ctrl) |
c123b867 | 192 | { |
268d06bb | 193 | struct fmi *fmi = container_of(ctrl->handler, struct fmi, hdl); |
a2ef73af | 194 | |
c123b867 DL |
195 | switch (ctrl->id) { |
196 | case V4L2_CID_AUDIO_MUTE: | |
268d06bb | 197 | if (ctrl->val) |
c41269fd | 198 | fmi_mute(fmi); |
c123b867 | 199 | else |
c41269fd | 200 | fmi_unmute(fmi); |
268d06bb | 201 | fmi->mute = ctrl->val; |
c123b867 DL |
202 | return 0; |
203 | } | |
204 | return -EINVAL; | |
205 | } | |
206 | ||
268d06bb HV |
207 | static const struct v4l2_ctrl_ops fmi_ctrl_ops = { |
208 | .s_ctrl = fmi_s_ctrl, | |
209 | }; | |
210 | ||
bec43661 | 211 | static const struct v4l2_file_operations fmi_fops = { |
1da177e4 | 212 | .owner = THIS_MODULE, |
0dc5d82d HV |
213 | .open = v4l2_fh_open, |
214 | .release = v4l2_fh_release, | |
215 | .poll = v4l2_ctrl_poll, | |
32958fdd | 216 | .unlocked_ioctl = video_ioctl2, |
1da177e4 LT |
217 | }; |
218 | ||
a399810c | 219 | static const struct v4l2_ioctl_ops fmi_ioctl_ops = { |
c123b867 DL |
220 | .vidioc_querycap = vidioc_querycap, |
221 | .vidioc_g_tuner = vidioc_g_tuner, | |
222 | .vidioc_s_tuner = vidioc_s_tuner, | |
c123b867 DL |
223 | .vidioc_g_frequency = vidioc_g_frequency, |
224 | .vidioc_s_frequency = vidioc_s_frequency, | |
0dc5d82d HV |
225 | .vidioc_log_status = v4l2_ctrl_log_status, |
226 | .vidioc_subscribe_event = v4l2_ctrl_subscribe_event, | |
227 | .vidioc_unsubscribe_event = v4l2_event_unsubscribe, | |
1da177e4 LT |
228 | }; |
229 | ||
230 | /* ladis: this is my card. does any other types exist? */ | |
4c62e976 | 231 | static struct isapnp_device_id id_table[] = { |
abed623c | 232 | /* SF16-FMI */ |
1da177e4 LT |
233 | { ISAPNP_ANY_ID, ISAPNP_ANY_ID, |
234 | ISAPNP_VENDOR('M','F','R'), ISAPNP_FUNCTION(0xad10), 0}, | |
abed623c OZ |
235 | /* SF16-FMD */ |
236 | { ISAPNP_ANY_ID, ISAPNP_ANY_ID, | |
237 | ISAPNP_VENDOR('M','F','R'), ISAPNP_FUNCTION(0xad12), 0}, | |
1da177e4 LT |
238 | { ISAPNP_CARD_END, }, |
239 | }; | |
240 | ||
241 | MODULE_DEVICE_TABLE(isapnp, id_table); | |
242 | ||
a999337b | 243 | static int __init isapnp_fmi_probe(void) |
1da177e4 LT |
244 | { |
245 | int i = 0; | |
246 | ||
247 | while (id_table[i].card_vendor != 0 && dev == NULL) { | |
248 | dev = pnp_find_dev(NULL, id_table[i].vendor, | |
249 | id_table[i].function, NULL); | |
250 | i++; | |
251 | } | |
252 | ||
253 | if (!dev) | |
254 | return -ENODEV; | |
255 | if (pnp_device_attach(dev) < 0) | |
256 | return -EAGAIN; | |
257 | if (pnp_activate_dev(dev) < 0) { | |
c41269fd | 258 | printk(KERN_ERR "radio-sf16fmi: PnP configure failed (out of resources?)\n"); |
1da177e4 LT |
259 | pnp_device_detach(dev); |
260 | return -ENOMEM; | |
261 | } | |
262 | if (!pnp_port_valid(dev, 0)) { | |
263 | pnp_device_detach(dev); | |
264 | return -ENODEV; | |
265 | } | |
266 | ||
267 | i = pnp_port_start(dev, 0); | |
c41269fd | 268 | printk(KERN_INFO "radio-sf16fmi: PnP reports card at %#x\n", i); |
1da177e4 LT |
269 | |
270 | return i; | |
271 | } | |
272 | ||
273 | static int __init fmi_init(void) | |
274 | { | |
c41269fd HV |
275 | struct fmi *fmi = &fmi_card; |
276 | struct v4l2_device *v4l2_dev = &fmi->v4l2_dev; | |
268d06bb | 277 | struct v4l2_ctrl_handler *hdl = &fmi->hdl; |
67cabf50 OZ |
278 | int res, i; |
279 | int probe_ports[] = { 0, 0x284, 0x384 }; | |
280 | ||
281 | if (io < 0) { | |
282 | for (i = 0; i < ARRAY_SIZE(probe_ports); i++) { | |
283 | io = probe_ports[i]; | |
284 | if (io == 0) { | |
285 | io = isapnp_fmi_probe(); | |
286 | if (io < 0) | |
287 | continue; | |
8b4b6818 | 288 | pnp_attached = true; |
67cabf50 OZ |
289 | } |
290 | if (!request_region(io, 2, "radio-sf16fmi")) { | |
291 | if (pnp_attached) | |
292 | pnp_device_detach(dev); | |
293 | io = -1; | |
294 | continue; | |
295 | } | |
296 | if (pnp_attached || | |
297 | ((inb(io) & 0xf9) == 0xf9 && (inb(io) & 0x4) == 0)) | |
298 | break; | |
299 | release_region(io, 2); | |
300 | io = -1; | |
301 | } | |
302 | } else { | |
303 | if (!request_region(io, 2, "radio-sf16fmi")) { | |
304 | printk(KERN_ERR "radio-sf16fmi: port %#x already in use\n", io); | |
305 | return -EBUSY; | |
306 | } | |
307 | if (inb(io) == 0xff) { | |
308 | printk(KERN_ERR "radio-sf16fmi: card not present at %#x\n", io); | |
309 | release_region(io, 2); | |
310 | return -ENODEV; | |
311 | } | |
312 | } | |
313 | if (io < 0) { | |
314 | printk(KERN_ERR "radio-sf16fmi: no cards found\n"); | |
315 | return -ENODEV; | |
316 | } | |
c41269fd | 317 | |
c41269fd HV |
318 | strlcpy(v4l2_dev->name, "sf16fmi", sizeof(v4l2_dev->name)); |
319 | fmi->io = io; | |
1da177e4 | 320 | |
c41269fd HV |
321 | res = v4l2_device_register(NULL, v4l2_dev); |
322 | if (res < 0) { | |
323 | release_region(fmi->io, 2); | |
67cabf50 OZ |
324 | if (pnp_attached) |
325 | pnp_device_detach(dev); | |
c41269fd HV |
326 | v4l2_err(v4l2_dev, "Could not register v4l2_device\n"); |
327 | return res; | |
328 | } | |
329 | ||
268d06bb HV |
330 | v4l2_ctrl_handler_init(hdl, 1); |
331 | v4l2_ctrl_new_std(hdl, &fmi_ctrl_ops, | |
332 | V4L2_CID_AUDIO_MUTE, 0, 1, 1, 1); | |
333 | v4l2_dev->ctrl_handler = hdl; | |
334 | if (hdl->error) { | |
335 | res = hdl->error; | |
336 | v4l2_err(v4l2_dev, "Could not register controls\n"); | |
337 | v4l2_ctrl_handler_free(hdl); | |
338 | v4l2_device_unregister(v4l2_dev); | |
339 | return res; | |
340 | } | |
341 | ||
c41269fd HV |
342 | strlcpy(fmi->vdev.name, v4l2_dev->name, sizeof(fmi->vdev.name)); |
343 | fmi->vdev.v4l2_dev = v4l2_dev; | |
344 | fmi->vdev.fops = &fmi_fops; | |
345 | fmi->vdev.ioctl_ops = &fmi_ioctl_ops; | |
346 | fmi->vdev.release = video_device_release_empty; | |
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); |