Commit | Line | Data |
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46a60cfe FB |
1 | /* |
2 | * driver/media/radio/radio-tea5764.c | |
3 | * | |
4 | * Driver for TEA5764 radio chip for linux 2.6. | |
5 | * This driver is for TEA5764 chip from NXP, used in EZX phones from Motorola. | |
6 | * The I2C protocol is used for communicate with chip. | |
7 | * | |
8 | * Based in radio-tea5761.c Copyright (C) 2005 Nokia Corporation | |
9 | * | |
10 | * Copyright (c) 2008 Fabio Belavenuto <belavenuto@gmail.com> | |
11 | * | |
12 | * This program is free software; you can redistribute it and/or modify | |
13 | * it under the terms of the GNU General Public License as published by | |
14 | * the Free Software Foundation; either version 2 of the License, or | |
15 | * (at your option) any later version. | |
16 | * | |
17 | * This program is distributed in the hope that it will be useful, | |
18 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
20 | * GNU General Public License for more details. | |
21 | * | |
22 | * You should have received a copy of the GNU General Public License | |
23 | * along with this program; if not, write to the Free Software | |
24 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
25 | * | |
26 | * History: | |
27 | * 2008-12-06 Fabio Belavenuto <belavenuto@gmail.com> | |
28 | * initial code | |
29 | * | |
30 | * TODO: | |
31 | * add platform_data support for IRQs platform dependencies | |
32 | * add RDS support | |
33 | */ | |
34 | #include <linux/kernel.h> | |
5a0e3ad6 | 35 | #include <linux/slab.h> |
46a60cfe FB |
36 | #include <linux/module.h> |
37 | #include <linux/init.h> /* Initdata */ | |
38 | #include <linux/videodev2.h> /* kernel radio structs */ | |
39 | #include <linux/i2c.h> /* I2C */ | |
40 | #include <media/v4l2-common.h> | |
41 | #include <media/v4l2-ioctl.h> | |
099f88ee | 42 | #include <media/v4l2-device.h> |
16b37178 | 43 | #include <media/v4l2-ctrls.h> |
090fdf6a | 44 | #include <media/v4l2-event.h> |
46a60cfe | 45 | |
29834c1a | 46 | #define DRIVER_VERSION "0.0.2" |
46a60cfe FB |
47 | |
48 | #define DRIVER_AUTHOR "Fabio Belavenuto <belavenuto@gmail.com>" | |
49 | #define DRIVER_DESC "A driver for the TEA5764 radio chip for EZX Phones." | |
50 | ||
51 | #define PINFO(format, ...)\ | |
52 | printk(KERN_INFO KBUILD_MODNAME ": "\ | |
53 | DRIVER_VERSION ": " format "\n", ## __VA_ARGS__) | |
54 | #define PWARN(format, ...)\ | |
55 | printk(KERN_WARNING KBUILD_MODNAME ": "\ | |
56 | DRIVER_VERSION ": " format "\n", ## __VA_ARGS__) | |
57 | # define PDEBUG(format, ...)\ | |
58 | printk(KERN_DEBUG KBUILD_MODNAME ": "\ | |
59 | DRIVER_VERSION ": " format "\n", ## __VA_ARGS__) | |
60 | ||
61 | /* Frequency limits in MHz -- these are European values. For Japanese | |
62 | devices, that would be 76000 and 91000. */ | |
b7300892 HV |
63 | #define FREQ_MIN 87500U |
64 | #define FREQ_MAX 108000U | |
46a60cfe FB |
65 | #define FREQ_MUL 16 |
66 | ||
67 | /* TEA5764 registers */ | |
68 | #define TEA5764_MANID 0x002b | |
69 | #define TEA5764_CHIPID 0x5764 | |
70 | ||
71 | #define TEA5764_INTREG_BLMSK 0x0001 | |
72 | #define TEA5764_INTREG_FRRMSK 0x0002 | |
73 | #define TEA5764_INTREG_LEVMSK 0x0008 | |
74 | #define TEA5764_INTREG_IFMSK 0x0010 | |
75 | #define TEA5764_INTREG_BLMFLAG 0x0100 | |
76 | #define TEA5764_INTREG_FRRFLAG 0x0200 | |
77 | #define TEA5764_INTREG_LEVFLAG 0x0800 | |
78 | #define TEA5764_INTREG_IFFLAG 0x1000 | |
79 | ||
80 | #define TEA5764_FRQSET_SUD 0x8000 | |
81 | #define TEA5764_FRQSET_SM 0x4000 | |
82 | ||
83 | #define TEA5764_TNCTRL_PUPD1 0x8000 | |
84 | #define TEA5764_TNCTRL_PUPD0 0x4000 | |
85 | #define TEA5764_TNCTRL_BLIM 0x2000 | |
86 | #define TEA5764_TNCTRL_SWPM 0x1000 | |
87 | #define TEA5764_TNCTRL_IFCTC 0x0800 | |
88 | #define TEA5764_TNCTRL_AFM 0x0400 | |
89 | #define TEA5764_TNCTRL_SMUTE 0x0200 | |
90 | #define TEA5764_TNCTRL_SNC 0x0100 | |
91 | #define TEA5764_TNCTRL_MU 0x0080 | |
92 | #define TEA5764_TNCTRL_SSL1 0x0040 | |
93 | #define TEA5764_TNCTRL_SSL0 0x0020 | |
94 | #define TEA5764_TNCTRL_HLSI 0x0010 | |
95 | #define TEA5764_TNCTRL_MST 0x0008 | |
96 | #define TEA5764_TNCTRL_SWP 0x0004 | |
97 | #define TEA5764_TNCTRL_DTC 0x0002 | |
98 | #define TEA5764_TNCTRL_AHLSI 0x0001 | |
99 | ||
100 | #define TEA5764_TUNCHK_LEVEL(x) (((x) & 0x00F0) >> 4) | |
101 | #define TEA5764_TUNCHK_IFCNT(x) (((x) & 0xFE00) >> 9) | |
102 | #define TEA5764_TUNCHK_TUNTO 0x0100 | |
103 | #define TEA5764_TUNCHK_LD 0x0008 | |
104 | #define TEA5764_TUNCHK_STEREO 0x0004 | |
105 | ||
106 | #define TEA5764_TESTREG_TRIGFR 0x0800 | |
107 | ||
108 | struct tea5764_regs { | |
109 | u16 intreg; /* INTFLAG & INTMSK */ | |
110 | u16 frqset; /* FRQSETMSB & FRQSETLSB */ | |
111 | u16 tnctrl; /* TNCTRL1 & TNCTRL2 */ | |
112 | u16 frqchk; /* FRQCHKMSB & FRQCHKLSB */ | |
113 | u16 tunchk; /* IFCHK & LEVCHK */ | |
114 | u16 testreg; /* TESTBITS & TESTMODE */ | |
115 | u16 rdsstat; /* RDSSTAT1 & RDSSTAT2 */ | |
116 | u16 rdslb; /* RDSLBMSB & RDSLBLSB */ | |
117 | u16 rdspb; /* RDSPBMSB & RDSPBLSB */ | |
118 | u16 rdsbc; /* RDSBBC & RDSGBC */ | |
119 | u16 rdsctrl; /* RDSCTRL1 & RDSCTRL2 */ | |
120 | u16 rdsbbl; /* PAUSEDET & RDSBBL */ | |
121 | u16 manid; /* MANID1 & MANID2 */ | |
122 | u16 chipid; /* CHIPID1 & CHIPID2 */ | |
123 | } __attribute__ ((packed)); | |
124 | ||
125 | struct tea5764_write_regs { | |
126 | u8 intreg; /* INTMSK */ | |
7754622b HV |
127 | __be16 frqset; /* FRQSETMSB & FRQSETLSB */ |
128 | __be16 tnctrl; /* TNCTRL1 & TNCTRL2 */ | |
129 | __be16 testreg; /* TESTBITS & TESTMODE */ | |
130 | __be16 rdsctrl; /* RDSCTRL1 & RDSCTRL2 */ | |
131 | __be16 rdsbbl; /* PAUSEDET & RDSBBL */ | |
46a60cfe FB |
132 | } __attribute__ ((packed)); |
133 | ||
8c4343e5 | 134 | #ifdef CONFIG_RADIO_TEA5764_XTAL |
46a60cfe | 135 | #define RADIO_TEA5764_XTAL 1 |
8c4343e5 PB |
136 | #else |
137 | #define RADIO_TEA5764_XTAL 0 | |
46a60cfe FB |
138 | #endif |
139 | ||
140 | static int radio_nr = -1; | |
141 | static int use_xtal = RADIO_TEA5764_XTAL; | |
142 | ||
143 | struct tea5764_device { | |
16b37178 HV |
144 | struct v4l2_device v4l2_dev; |
145 | struct v4l2_ctrl_handler ctrl_handler; | |
46a60cfe | 146 | struct i2c_client *i2c_client; |
cf9033f9 | 147 | struct video_device vdev; |
46a60cfe FB |
148 | struct tea5764_regs regs; |
149 | struct mutex mutex; | |
46a60cfe FB |
150 | }; |
151 | ||
152 | /* I2C code related */ | |
0dec8688 | 153 | static int tea5764_i2c_read(struct tea5764_device *radio) |
46a60cfe FB |
154 | { |
155 | int i; | |
156 | u16 *p = (u16 *) &radio->regs; | |
157 | ||
158 | struct i2c_msg msgs[1] = { | |
66ba9590 S |
159 | { .addr = radio->i2c_client->addr, |
160 | .flags = I2C_M_RD, | |
161 | .len = sizeof(radio->regs), | |
162 | .buf = (void *)&radio->regs | |
163 | }, | |
46a60cfe FB |
164 | }; |
165 | if (i2c_transfer(radio->i2c_client->adapter, msgs, 1) != 1) | |
166 | return -EIO; | |
167 | for (i = 0; i < sizeof(struct tea5764_regs) / sizeof(u16); i++) | |
7754622b | 168 | p[i] = __be16_to_cpu((__force __be16)p[i]); |
46a60cfe FB |
169 | |
170 | return 0; | |
171 | } | |
172 | ||
0dec8688 | 173 | static int tea5764_i2c_write(struct tea5764_device *radio) |
46a60cfe FB |
174 | { |
175 | struct tea5764_write_regs wr; | |
176 | struct tea5764_regs *r = &radio->regs; | |
177 | struct i2c_msg msgs[1] = { | |
66ba9590 S |
178 | { |
179 | .addr = radio->i2c_client->addr, | |
180 | .len = sizeof(wr), | |
181 | .buf = (void *)&wr | |
182 | }, | |
46a60cfe FB |
183 | }; |
184 | wr.intreg = r->intreg & 0xff; | |
185 | wr.frqset = __cpu_to_be16(r->frqset); | |
186 | wr.tnctrl = __cpu_to_be16(r->tnctrl); | |
187 | wr.testreg = __cpu_to_be16(r->testreg); | |
188 | wr.rdsctrl = __cpu_to_be16(r->rdsctrl); | |
189 | wr.rdsbbl = __cpu_to_be16(r->rdsbbl); | |
190 | if (i2c_transfer(radio->i2c_client->adapter, msgs, 1) != 1) | |
191 | return -EIO; | |
192 | return 0; | |
193 | } | |
194 | ||
46a60cfe FB |
195 | static void tea5764_power_up(struct tea5764_device *radio) |
196 | { | |
197 | struct tea5764_regs *r = &radio->regs; | |
198 | ||
199 | if (!(r->tnctrl & TEA5764_TNCTRL_PUPD0)) { | |
200 | r->tnctrl &= ~(TEA5764_TNCTRL_AFM | TEA5764_TNCTRL_MU | | |
201 | TEA5764_TNCTRL_HLSI); | |
202 | if (!use_xtal) | |
203 | r->testreg |= TEA5764_TESTREG_TRIGFR; | |
204 | else | |
205 | r->testreg &= ~TEA5764_TESTREG_TRIGFR; | |
206 | ||
207 | r->tnctrl |= TEA5764_TNCTRL_PUPD0; | |
208 | tea5764_i2c_write(radio); | |
209 | } | |
210 | } | |
211 | ||
212 | static void tea5764_power_down(struct tea5764_device *radio) | |
213 | { | |
214 | struct tea5764_regs *r = &radio->regs; | |
215 | ||
216 | if (r->tnctrl & TEA5764_TNCTRL_PUPD0) { | |
217 | r->tnctrl &= ~TEA5764_TNCTRL_PUPD0; | |
218 | tea5764_i2c_write(radio); | |
219 | } | |
220 | } | |
221 | ||
222 | static void tea5764_set_freq(struct tea5764_device *radio, int freq) | |
223 | { | |
224 | struct tea5764_regs *r = &radio->regs; | |
225 | ||
226 | /* formula: (freq [+ or -] 225000) / 8192 */ | |
227 | if (r->tnctrl & TEA5764_TNCTRL_HLSI) | |
228 | r->frqset = (freq + 225000) / 8192; | |
229 | else | |
230 | r->frqset = (freq - 225000) / 8192; | |
231 | } | |
232 | ||
233 | static int tea5764_get_freq(struct tea5764_device *radio) | |
234 | { | |
235 | struct tea5764_regs *r = &radio->regs; | |
236 | ||
237 | if (r->tnctrl & TEA5764_TNCTRL_HLSI) | |
238 | return (r->frqchk * 8192) - 225000; | |
239 | else | |
240 | return (r->frqchk * 8192) + 225000; | |
241 | } | |
242 | ||
243 | /* tune an frequency, freq is defined by v4l's TUNER_LOW, i.e. 1/16th kHz */ | |
244 | static void tea5764_tune(struct tea5764_device *radio, int freq) | |
245 | { | |
246 | tea5764_set_freq(radio, freq); | |
247 | if (tea5764_i2c_write(radio)) | |
248 | PWARN("Could not set frequency!"); | |
249 | } | |
250 | ||
251 | static void tea5764_set_audout_mode(struct tea5764_device *radio, int audmode) | |
252 | { | |
253 | struct tea5764_regs *r = &radio->regs; | |
254 | int tnctrl = r->tnctrl; | |
255 | ||
256 | if (audmode == V4L2_TUNER_MODE_MONO) | |
257 | r->tnctrl |= TEA5764_TNCTRL_MST; | |
258 | else | |
259 | r->tnctrl &= ~TEA5764_TNCTRL_MST; | |
260 | if (tnctrl != r->tnctrl) | |
261 | tea5764_i2c_write(radio); | |
262 | } | |
263 | ||
264 | static int tea5764_get_audout_mode(struct tea5764_device *radio) | |
265 | { | |
266 | struct tea5764_regs *r = &radio->regs; | |
267 | ||
268 | if (r->tnctrl & TEA5764_TNCTRL_MST) | |
269 | return V4L2_TUNER_MODE_MONO; | |
270 | else | |
271 | return V4L2_TUNER_MODE_STEREO; | |
272 | } | |
273 | ||
274 | static void tea5764_mute(struct tea5764_device *radio, int on) | |
275 | { | |
276 | struct tea5764_regs *r = &radio->regs; | |
277 | int tnctrl = r->tnctrl; | |
278 | ||
279 | if (on) | |
280 | r->tnctrl |= TEA5764_TNCTRL_MU; | |
281 | else | |
282 | r->tnctrl &= ~TEA5764_TNCTRL_MU; | |
283 | if (tnctrl != r->tnctrl) | |
284 | tea5764_i2c_write(radio); | |
285 | } | |
286 | ||
46a60cfe FB |
287 | /* V4L2 vidioc */ |
288 | static int vidioc_querycap(struct file *file, void *priv, | |
289 | struct v4l2_capability *v) | |
290 | { | |
291 | struct tea5764_device *radio = video_drvdata(file); | |
cf9033f9 | 292 | struct video_device *dev = &radio->vdev; |
46a60cfe FB |
293 | |
294 | strlcpy(v->driver, dev->dev.driver->name, sizeof(v->driver)); | |
295 | strlcpy(v->card, dev->name, sizeof(v->card)); | |
c3ef01ce KS |
296 | snprintf(v->bus_info, sizeof(v->bus_info), |
297 | "I2C:%s", dev_name(&dev->dev)); | |
cc9231f8 HV |
298 | v->device_caps = V4L2_CAP_TUNER | V4L2_CAP_RADIO; |
299 | v->capabilities = v->device_caps | V4L2_CAP_DEVICE_CAPS; | |
46a60cfe FB |
300 | return 0; |
301 | } | |
302 | ||
303 | static int vidioc_g_tuner(struct file *file, void *priv, | |
304 | struct v4l2_tuner *v) | |
305 | { | |
306 | struct tea5764_device *radio = video_drvdata(file); | |
307 | struct tea5764_regs *r = &radio->regs; | |
308 | ||
309 | if (v->index > 0) | |
310 | return -EINVAL; | |
311 | ||
b7300892 | 312 | strlcpy(v->name, "FM", sizeof(v->name)); |
46a60cfe FB |
313 | v->type = V4L2_TUNER_RADIO; |
314 | tea5764_i2c_read(radio); | |
315 | v->rangelow = FREQ_MIN * FREQ_MUL; | |
316 | v->rangehigh = FREQ_MAX * FREQ_MUL; | |
317 | v->capability = V4L2_TUNER_CAP_LOW | V4L2_TUNER_CAP_STEREO; | |
318 | if (r->tunchk & TEA5764_TUNCHK_STEREO) | |
5543e2b4 HV |
319 | v->rxsubchans = V4L2_TUNER_SUB_STEREO; |
320 | else | |
321 | v->rxsubchans = V4L2_TUNER_SUB_MONO; | |
46a60cfe FB |
322 | v->audmode = tea5764_get_audout_mode(radio); |
323 | v->signal = TEA5764_TUNCHK_LEVEL(r->tunchk) * 0xffff / 0xf; | |
324 | v->afc = TEA5764_TUNCHK_IFCNT(r->tunchk); | |
325 | ||
326 | return 0; | |
327 | } | |
328 | ||
329 | static int vidioc_s_tuner(struct file *file, void *priv, | |
2f73c7c5 | 330 | const struct v4l2_tuner *v) |
46a60cfe FB |
331 | { |
332 | struct tea5764_device *radio = video_drvdata(file); | |
333 | ||
334 | if (v->index > 0) | |
335 | return -EINVAL; | |
336 | ||
337 | tea5764_set_audout_mode(radio, v->audmode); | |
338 | return 0; | |
339 | } | |
340 | ||
341 | static int vidioc_s_frequency(struct file *file, void *priv, | |
b530a447 | 342 | const struct v4l2_frequency *f) |
46a60cfe FB |
343 | { |
344 | struct tea5764_device *radio = video_drvdata(file); | |
b7300892 | 345 | unsigned freq = f->frequency; |
46a60cfe | 346 | |
a3a9e287 | 347 | if (f->tuner != 0 || f->type != V4L2_TUNER_RADIO) |
46a60cfe | 348 | return -EINVAL; |
b7300892 | 349 | if (freq == 0) { |
46a60cfe FB |
350 | /* We special case this as a power down control. */ |
351 | tea5764_power_down(radio); | |
b7300892 HV |
352 | /* Yes, that's what is returned in this case. This |
353 | whole special case is non-compliant and should really | |
354 | be replaced with something better, but changing this | |
355 | might well break code that depends on this behavior. | |
356 | So we keep it as-is. */ | |
46a60cfe | 357 | return -EINVAL; |
b7300892 | 358 | } |
9ba6a91f | 359 | freq = clamp(freq, FREQ_MIN * FREQ_MUL, FREQ_MAX * FREQ_MUL); |
46a60cfe | 360 | tea5764_power_up(radio); |
b7300892 | 361 | tea5764_tune(radio, (freq * 125) / 2); |
46a60cfe FB |
362 | return 0; |
363 | } | |
364 | ||
365 | static int vidioc_g_frequency(struct file *file, void *priv, | |
366 | struct v4l2_frequency *f) | |
367 | { | |
368 | struct tea5764_device *radio = video_drvdata(file); | |
369 | struct tea5764_regs *r = &radio->regs; | |
370 | ||
a3a9e287 HV |
371 | if (f->tuner != 0) |
372 | return -EINVAL; | |
46a60cfe | 373 | tea5764_i2c_read(radio); |
46a60cfe FB |
374 | f->type = V4L2_TUNER_RADIO; |
375 | if (r->tnctrl & TEA5764_TNCTRL_PUPD0) | |
376 | f->frequency = (tea5764_get_freq(radio) * 2) / 125; | |
377 | else | |
378 | f->frequency = 0; | |
379 | ||
380 | return 0; | |
381 | } | |
382 | ||
16b37178 | 383 | static int tea5764_s_ctrl(struct v4l2_ctrl *ctrl) |
46a60cfe | 384 | { |
16b37178 HV |
385 | struct tea5764_device *radio = |
386 | container_of(ctrl->handler, struct tea5764_device, ctrl_handler); | |
46a60cfe FB |
387 | |
388 | switch (ctrl->id) { | |
389 | case V4L2_CID_AUDIO_MUTE: | |
16b37178 | 390 | tea5764_mute(radio, ctrl->val); |
46a60cfe FB |
391 | return 0; |
392 | } | |
393 | return -EINVAL; | |
394 | } | |
395 | ||
16b37178 HV |
396 | static const struct v4l2_ctrl_ops tea5764_ctrl_ops = { |
397 | .s_ctrl = tea5764_s_ctrl, | |
398 | }; | |
399 | ||
46a60cfe FB |
400 | /* File system interface */ |
401 | static const struct v4l2_file_operations tea5764_fops = { | |
402 | .owner = THIS_MODULE, | |
090fdf6a HV |
403 | .open = v4l2_fh_open, |
404 | .release = v4l2_fh_release, | |
405 | .poll = v4l2_ctrl_poll, | |
ee71e423 | 406 | .unlocked_ioctl = video_ioctl2, |
46a60cfe FB |
407 | }; |
408 | ||
409 | static const struct v4l2_ioctl_ops tea5764_ioctl_ops = { | |
410 | .vidioc_querycap = vidioc_querycap, | |
411 | .vidioc_g_tuner = vidioc_g_tuner, | |
412 | .vidioc_s_tuner = vidioc_s_tuner, | |
46a60cfe FB |
413 | .vidioc_g_frequency = vidioc_g_frequency, |
414 | .vidioc_s_frequency = vidioc_s_frequency, | |
090fdf6a HV |
415 | .vidioc_log_status = v4l2_ctrl_log_status, |
416 | .vidioc_subscribe_event = v4l2_ctrl_subscribe_event, | |
417 | .vidioc_unsubscribe_event = v4l2_event_unsubscribe, | |
46a60cfe FB |
418 | }; |
419 | ||
420 | /* V4L2 interface */ | |
421 | static struct video_device tea5764_radio_template = { | |
422 | .name = "TEA5764 FM-Radio", | |
423 | .fops = &tea5764_fops, | |
424 | .ioctl_ops = &tea5764_ioctl_ops, | |
cf9033f9 | 425 | .release = video_device_release_empty, |
46a60cfe FB |
426 | }; |
427 | ||
428 | /* I2C probe: check if the device exists and register with v4l if it is */ | |
4c62e976 GKH |
429 | static int tea5764_i2c_probe(struct i2c_client *client, |
430 | const struct i2c_device_id *id) | |
46a60cfe FB |
431 | { |
432 | struct tea5764_device *radio; | |
099f88ee | 433 | struct v4l2_device *v4l2_dev; |
16b37178 | 434 | struct v4l2_ctrl_handler *hdl; |
46a60cfe FB |
435 | struct tea5764_regs *r; |
436 | int ret; | |
437 | ||
438 | PDEBUG("probe"); | |
ee71e423 | 439 | radio = kzalloc(sizeof(struct tea5764_device), GFP_KERNEL); |
46a60cfe FB |
440 | if (!radio) |
441 | return -ENOMEM; | |
442 | ||
099f88ee HV |
443 | v4l2_dev = &radio->v4l2_dev; |
444 | ret = v4l2_device_register(&client->dev, v4l2_dev); | |
445 | if (ret < 0) { | |
446 | v4l2_err(v4l2_dev, "could not register v4l2_device\n"); | |
447 | goto errfr; | |
448 | } | |
16b37178 HV |
449 | |
450 | hdl = &radio->ctrl_handler; | |
451 | v4l2_ctrl_handler_init(hdl, 1); | |
452 | v4l2_ctrl_new_std(hdl, &tea5764_ctrl_ops, | |
453 | V4L2_CID_AUDIO_MUTE, 0, 1, 1, 1); | |
454 | v4l2_dev->ctrl_handler = hdl; | |
455 | if (hdl->error) { | |
456 | ret = hdl->error; | |
457 | v4l2_err(v4l2_dev, "Could not register controls\n"); | |
458 | goto errunreg; | |
459 | } | |
460 | ||
46a60cfe FB |
461 | mutex_init(&radio->mutex); |
462 | radio->i2c_client = client; | |
463 | ret = tea5764_i2c_read(radio); | |
464 | if (ret) | |
099f88ee | 465 | goto errunreg; |
46a60cfe FB |
466 | r = &radio->regs; |
467 | PDEBUG("chipid = %04X, manid = %04X", r->chipid, r->manid); | |
468 | if (r->chipid != TEA5764_CHIPID || | |
469 | (r->manid & 0x0fff) != TEA5764_MANID) { | |
470 | PWARN("This chip is not a TEA5764!"); | |
471 | ret = -EINVAL; | |
099f88ee | 472 | goto errunreg; |
46a60cfe FB |
473 | } |
474 | ||
cf9033f9 | 475 | radio->vdev = tea5764_radio_template; |
46a60cfe FB |
476 | |
477 | i2c_set_clientdata(client, radio); | |
cf9033f9 HV |
478 | video_set_drvdata(&radio->vdev, radio); |
479 | radio->vdev.lock = &radio->mutex; | |
480 | radio->vdev.v4l2_dev = v4l2_dev; | |
46a60cfe FB |
481 | |
482 | /* initialize and power off the chip */ | |
483 | tea5764_i2c_read(radio); | |
484 | tea5764_set_audout_mode(radio, V4L2_TUNER_MODE_STEREO); | |
485 | tea5764_mute(radio, 1); | |
486 | tea5764_power_down(radio); | |
487 | ||
cf9033f9 | 488 | ret = video_register_device(&radio->vdev, VFL_TYPE_RADIO, radio_nr); |
ee71e423 HV |
489 | if (ret < 0) { |
490 | PWARN("Could not register video device!"); | |
cf9033f9 | 491 | goto errunreg; |
ee71e423 HV |
492 | } |
493 | ||
46a60cfe FB |
494 | PINFO("registered."); |
495 | return 0; | |
099f88ee | 496 | errunreg: |
16b37178 | 497 | v4l2_ctrl_handler_free(hdl); |
099f88ee | 498 | v4l2_device_unregister(v4l2_dev); |
46a60cfe FB |
499 | errfr: |
500 | kfree(radio); | |
501 | return ret; | |
502 | } | |
503 | ||
4c62e976 | 504 | static int tea5764_i2c_remove(struct i2c_client *client) |
46a60cfe FB |
505 | { |
506 | struct tea5764_device *radio = i2c_get_clientdata(client); | |
507 | ||
508 | PDEBUG("remove"); | |
509 | if (radio) { | |
510 | tea5764_power_down(radio); | |
cf9033f9 | 511 | video_unregister_device(&radio->vdev); |
16b37178 | 512 | v4l2_ctrl_handler_free(&radio->ctrl_handler); |
099f88ee | 513 | v4l2_device_unregister(&radio->v4l2_dev); |
46a60cfe FB |
514 | kfree(radio); |
515 | } | |
516 | return 0; | |
517 | } | |
518 | ||
519 | /* I2C subsystem interface */ | |
520 | static const struct i2c_device_id tea5764_id[] = { | |
521 | { "radio-tea5764", 0 }, | |
522 | { } /* Terminating entry */ | |
523 | }; | |
524 | MODULE_DEVICE_TABLE(i2c, tea5764_id); | |
525 | ||
526 | static struct i2c_driver tea5764_i2c_driver = { | |
527 | .driver = { | |
528 | .name = "radio-tea5764", | |
46a60cfe FB |
529 | }, |
530 | .probe = tea5764_i2c_probe, | |
4c62e976 | 531 | .remove = tea5764_i2c_remove, |
46a60cfe FB |
532 | .id_table = tea5764_id, |
533 | }; | |
534 | ||
c6e8d86f | 535 | module_i2c_driver(tea5764_i2c_driver); |
46a60cfe FB |
536 | |
537 | MODULE_AUTHOR(DRIVER_AUTHOR); | |
538 | MODULE_DESCRIPTION(DRIVER_DESC); | |
539 | MODULE_LICENSE("GPL"); | |
29834c1a | 540 | MODULE_VERSION(DRIVER_VERSION); |
46a60cfe | 541 | |
731884ba | 542 | module_param(use_xtal, int, 0); |
46a60cfe FB |
543 | MODULE_PARM_DESC(use_xtal, "Chip have a xtal connected in board"); |
544 | module_param(radio_nr, int, 0); | |
545 | MODULE_PARM_DESC(radio_nr, "video4linux device number to use"); |