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899127b6 HV |
1 | /* |
2 | * drivers/staging/media/radio-bcm2048.c | |
3 | * | |
4 | * Driver for I2C Broadcom BCM2048 FM Radio Receiver: | |
5 | * | |
6 | * Copyright (C) Nokia Corporation | |
7 | * Contact: Eero Nurkkala <ext-eero.nurkkala@nokia.com> | |
8 | * | |
9 | * Copyright (C) Nils Faerber <nils.faerber@kernelconcepts.de> | |
10 | * | |
11 | * This program is free software; you can redistribute it and/or | |
12 | * modify it under the terms of the GNU General Public License | |
13 | * version 2 as published by the Free Software Foundation. | |
14 | * | |
15 | * This program is distributed in the hope that it will be useful, but | |
16 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
18 | * General Public License for more details. | |
19 | * | |
899127b6 HV |
20 | */ |
21 | ||
22 | /* | |
23 | * History: | |
24 | * Eero Nurkkala <ext-eero.nurkkala@nokia.com> | |
25 | * Version 0.0.1 | |
26 | * - Initial implementation | |
27 | * 2010-02-21 Nils Faerber <nils.faerber@kernelconcepts.de> | |
28 | * Version 0.0.2 | |
29 | * - Add support for interrupt driven rds data reading | |
30 | */ | |
31 | ||
32 | #include <linux/kernel.h> | |
33 | #include <linux/module.h> | |
34 | #include <linux/init.h> | |
35 | #include <linux/version.h> | |
36 | #include <linux/interrupt.h> | |
37 | #include <linux/sysfs.h> | |
38 | #include <linux/completion.h> | |
39 | #include <linux/delay.h> | |
40 | #include <linux/i2c.h> | |
41 | #include <linux/videodev2.h> | |
42 | #include <linux/mutex.h> | |
43 | #include <linux/slab.h> | |
44 | #include <media/v4l2-common.h> | |
45 | #include <media/v4l2-ioctl.h> | |
46 | #include "radio-bcm2048.h" | |
47 | ||
48 | /* driver definitions */ | |
49 | #define BCM2048_DRIVER_AUTHOR "Eero Nurkkala <ext-eero.nurkkala@nokia.com>" | |
50 | #define BCM2048_DRIVER_NAME BCM2048_NAME | |
899127b6 HV |
51 | #define BCM2048_DRIVER_CARD "Broadcom bcm2048 FM Radio Receiver" |
52 | #define BCM2048_DRIVER_DESC "I2C driver for BCM2048 FM Radio Receiver" | |
53 | ||
54 | /* I2C Control Registers */ | |
55 | #define BCM2048_I2C_FM_RDS_SYSTEM 0x00 | |
56 | #define BCM2048_I2C_FM_CTRL 0x01 | |
57 | #define BCM2048_I2C_RDS_CTRL0 0x02 | |
58 | #define BCM2048_I2C_RDS_CTRL1 0x03 | |
59 | #define BCM2048_I2C_FM_AUDIO_PAUSE 0x04 | |
60 | #define BCM2048_I2C_FM_AUDIO_CTRL0 0x05 | |
61 | #define BCM2048_I2C_FM_AUDIO_CTRL1 0x06 | |
62 | #define BCM2048_I2C_FM_SEARCH_CTRL0 0x07 | |
63 | #define BCM2048_I2C_FM_SEARCH_CTRL1 0x08 | |
64 | #define BCM2048_I2C_FM_SEARCH_TUNE_MODE 0x09 | |
65 | #define BCM2048_I2C_FM_FREQ0 0x0a | |
66 | #define BCM2048_I2C_FM_FREQ1 0x0b | |
67 | #define BCM2048_I2C_FM_AF_FREQ0 0x0c | |
68 | #define BCM2048_I2C_FM_AF_FREQ1 0x0d | |
69 | #define BCM2048_I2C_FM_CARRIER 0x0e | |
70 | #define BCM2048_I2C_FM_RSSI 0x0f | |
71 | #define BCM2048_I2C_FM_RDS_MASK0 0x10 | |
72 | #define BCM2048_I2C_FM_RDS_MASK1 0x11 | |
73 | #define BCM2048_I2C_FM_RDS_FLAG0 0x12 | |
74 | #define BCM2048_I2C_FM_RDS_FLAG1 0x13 | |
75 | #define BCM2048_I2C_RDS_WLINE 0x14 | |
76 | #define BCM2048_I2C_RDS_BLKB_MATCH0 0x16 | |
77 | #define BCM2048_I2C_RDS_BLKB_MATCH1 0x17 | |
78 | #define BCM2048_I2C_RDS_BLKB_MASK0 0x18 | |
79 | #define BCM2048_I2C_RDS_BLKB_MASK1 0x19 | |
80 | #define BCM2048_I2C_RDS_PI_MATCH0 0x1a | |
81 | #define BCM2048_I2C_RDS_PI_MATCH1 0x1b | |
82 | #define BCM2048_I2C_RDS_PI_MASK0 0x1c | |
83 | #define BCM2048_I2C_RDS_PI_MASK1 0x1d | |
84 | #define BCM2048_I2C_SPARE1 0x20 | |
85 | #define BCM2048_I2C_SPARE2 0x21 | |
86 | #define BCM2048_I2C_FM_RDS_REV 0x28 | |
87 | #define BCM2048_I2C_SLAVE_CONFIGURATION 0x29 | |
88 | #define BCM2048_I2C_RDS_DATA 0x80 | |
89 | #define BCM2048_I2C_FM_BEST_TUNE_MODE 0x90 | |
90 | ||
91 | /* BCM2048_I2C_FM_RDS_SYSTEM */ | |
92 | #define BCM2048_FM_ON 0x01 | |
93 | #define BCM2048_RDS_ON 0x02 | |
94 | ||
95 | /* BCM2048_I2C_FM_CTRL */ | |
96 | #define BCM2048_BAND_SELECT 0x01 | |
97 | #define BCM2048_STEREO_MONO_AUTO_SELECT 0x02 | |
98 | #define BCM2048_STEREO_MONO_MANUAL_SELECT 0x04 | |
99 | #define BCM2048_STEREO_MONO_BLEND_SWITCH 0x08 | |
100 | #define BCM2048_HI_LO_INJECTION 0x10 | |
101 | ||
102 | /* BCM2048_I2C_RDS_CTRL0 */ | |
103 | #define BCM2048_RBDS_RDS_SELECT 0x01 | |
104 | #define BCM2048_FLUSH_FIFO 0x02 | |
105 | ||
106 | /* BCM2048_I2C_FM_AUDIO_PAUSE */ | |
107 | #define BCM2048_AUDIO_PAUSE_RSSI_TRESH 0x0f | |
108 | #define BCM2048_AUDIO_PAUSE_DURATION 0xf0 | |
109 | ||
110 | /* BCM2048_I2C_FM_AUDIO_CTRL0 */ | |
111 | #define BCM2048_RF_MUTE 0x01 | |
112 | #define BCM2048_MANUAL_MUTE 0x02 | |
113 | #define BCM2048_DAC_OUTPUT_LEFT 0x04 | |
114 | #define BCM2048_DAC_OUTPUT_RIGHT 0x08 | |
115 | #define BCM2048_AUDIO_ROUTE_DAC 0x10 | |
116 | #define BCM2048_AUDIO_ROUTE_I2S 0x20 | |
117 | #define BCM2048_DE_EMPHASIS_SELECT 0x40 | |
118 | #define BCM2048_AUDIO_BANDWIDTH_SELECT 0x80 | |
119 | ||
120 | /* BCM2048_I2C_FM_SEARCH_CTRL0 */ | |
121 | #define BCM2048_SEARCH_RSSI_THRESHOLD 0x7f | |
122 | #define BCM2048_SEARCH_DIRECTION 0x80 | |
123 | ||
124 | /* BCM2048_I2C_FM_SEARCH_TUNE_MODE */ | |
125 | #define BCM2048_FM_AUTO_SEARCH 0x03 | |
126 | ||
127 | /* BCM2048_I2C_FM_RSSI */ | |
128 | #define BCM2048_RSSI_VALUE 0xff | |
129 | ||
130 | /* BCM2048_I2C_FM_RDS_MASK0 */ | |
131 | /* BCM2048_I2C_FM_RDS_MASK1 */ | |
132 | #define BCM2048_FM_FLAG_SEARCH_TUNE_FINISHED 0x01 | |
133 | #define BCM2048_FM_FLAG_SEARCH_TUNE_FAIL 0x02 | |
134 | #define BCM2048_FM_FLAG_RSSI_LOW 0x04 | |
135 | #define BCM2048_FM_FLAG_CARRIER_ERROR_HIGH 0x08 | |
136 | #define BCM2048_FM_FLAG_AUDIO_PAUSE_INDICATION 0x10 | |
137 | #define BCM2048_FLAG_STEREO_DETECTED 0x20 | |
138 | #define BCM2048_FLAG_STEREO_ACTIVE 0x40 | |
139 | ||
140 | /* BCM2048_I2C_RDS_DATA */ | |
141 | #define BCM2048_SLAVE_ADDRESS 0x3f | |
142 | #define BCM2048_SLAVE_ENABLE 0x80 | |
143 | ||
144 | /* BCM2048_I2C_FM_BEST_TUNE_MODE */ | |
145 | #define BCM2048_BEST_TUNE_MODE 0x80 | |
146 | ||
147 | #define BCM2048_FM_FLAG_SEARCH_TUNE_FINISHED 0x01 | |
148 | #define BCM2048_FM_FLAG_SEARCH_TUNE_FAIL 0x02 | |
149 | #define BCM2048_FM_FLAG_RSSI_LOW 0x04 | |
150 | #define BCM2048_FM_FLAG_CARRIER_ERROR_HIGH 0x08 | |
151 | #define BCM2048_FM_FLAG_AUDIO_PAUSE_INDICATION 0x10 | |
152 | #define BCM2048_FLAG_STEREO_DETECTED 0x20 | |
153 | #define BCM2048_FLAG_STEREO_ACTIVE 0x40 | |
154 | ||
155 | #define BCM2048_RDS_FLAG_FIFO_WLINE 0x02 | |
156 | #define BCM2048_RDS_FLAG_B_BLOCK_MATCH 0x08 | |
157 | #define BCM2048_RDS_FLAG_SYNC_LOST 0x10 | |
158 | #define BCM2048_RDS_FLAG_PI_MATCH 0x20 | |
159 | ||
160 | #define BCM2048_RDS_MARK_END_BYTE0 0x7C | |
161 | #define BCM2048_RDS_MARK_END_BYTEN 0xFF | |
162 | ||
163 | #define BCM2048_FM_FLAGS_ALL (FM_FLAG_SEARCH_TUNE_FINISHED | \ | |
164 | FM_FLAG_SEARCH_TUNE_FAIL | \ | |
165 | FM_FLAG_RSSI_LOW | \ | |
166 | FM_FLAG_CARRIER_ERROR_HIGH | \ | |
167 | FM_FLAG_AUDIO_PAUSE_INDICATION | \ | |
168 | FLAG_STEREO_DETECTED | FLAG_STEREO_ACTIVE) | |
169 | ||
170 | #define BCM2048_RDS_FLAGS_ALL (RDS_FLAG_FIFO_WLINE | \ | |
171 | RDS_FLAG_B_BLOCK_MATCH | \ | |
172 | RDS_FLAG_SYNC_LOST | RDS_FLAG_PI_MATCH) | |
173 | ||
174 | #define BCM2048_DEFAULT_TIMEOUT 1500 | |
175 | #define BCM2048_AUTO_SEARCH_TIMEOUT 3000 | |
176 | ||
899127b6 HV |
177 | #define BCM2048_FREQDEV_UNIT 10000 |
178 | #define BCM2048_FREQV4L2_MULTI 625 | |
eef04f82 NJ |
179 | #define dev_to_v4l2(f) (((f) * BCM2048_FREQDEV_UNIT) / BCM2048_FREQV4L2_MULTI) |
180 | #define v4l2_to_dev(f) (((f) * BCM2048_FREQV4L2_MULTI) / BCM2048_FREQDEV_UNIT) | |
899127b6 | 181 | |
eef04f82 NJ |
182 | #define msb(x) ((u8)((u16)(x) >> 8)) |
183 | #define lsb(x) ((u8)((u16)(x) & 0x00FF)) | |
184 | #define compose_u16(msb, lsb) (((u16)(msb) << 8) | (lsb)) | |
899127b6 HV |
185 | |
186 | #define BCM2048_DEFAULT_POWERING_DELAY 20 | |
187 | #define BCM2048_DEFAULT_REGION 0x02 | |
188 | #define BCM2048_DEFAULT_MUTE 0x01 | |
189 | #define BCM2048_DEFAULT_RSSI_THRESHOLD 0x64 | |
190 | #define BCM2048_DEFAULT_RDS_WLINE 0x7E | |
191 | ||
192 | #define BCM2048_FM_SEARCH_INACTIVE 0x00 | |
193 | #define BCM2048_FM_PRE_SET_MODE 0x01 | |
194 | #define BCM2048_FM_AUTO_SEARCH_MODE 0x02 | |
195 | #define BCM2048_FM_AF_JUMP_MODE 0x03 | |
196 | ||
197 | #define BCM2048_FREQUENCY_BASE 64000 | |
198 | ||
199 | #define BCM2048_POWER_ON 0x01 | |
200 | #define BCM2048_POWER_OFF 0x00 | |
201 | ||
202 | #define BCM2048_ITEM_ENABLED 0x01 | |
203 | #define BCM2048_SEARCH_DIRECTION_UP 0x01 | |
204 | ||
205 | #define BCM2048_DE_EMPHASIS_75us 75 | |
206 | #define BCM2048_DE_EMPHASIS_50us 50 | |
207 | ||
208 | #define BCM2048_SCAN_FAIL 0x00 | |
209 | #define BCM2048_SCAN_OK 0x01 | |
210 | ||
211 | #define BCM2048_FREQ_ERROR_FLOOR -20 | |
212 | #define BCM2048_FREQ_ERROR_ROOF 20 | |
213 | ||
69e98df7 | 214 | /* -60 dB is reported as full signal strength */ |
899127b6 HV |
215 | #define BCM2048_RSSI_LEVEL_BASE -60 |
216 | #define BCM2048_RSSI_LEVEL_ROOF -100 | |
217 | #define BCM2048_RSSI_LEVEL_ROOF_NEG 100 | |
218 | #define BCM2048_SIGNAL_MULTIPLIER (0xFFFF / \ | |
219 | (BCM2048_RSSI_LEVEL_ROOF_NEG + \ | |
220 | BCM2048_RSSI_LEVEL_BASE)) | |
221 | ||
222 | #define BCM2048_RDS_FIFO_DUPLE_SIZE 0x03 | |
223 | #define BCM2048_RDS_CRC_MASK 0x0F | |
224 | #define BCM2048_RDS_CRC_NONE 0x00 | |
225 | #define BCM2048_RDS_CRC_MAX_2BITS 0x04 | |
226 | #define BCM2048_RDS_CRC_LEAST_2BITS 0x08 | |
227 | #define BCM2048_RDS_CRC_UNRECOVARABLE 0x0C | |
228 | ||
229 | #define BCM2048_RDS_BLOCK_MASK 0xF0 | |
230 | #define BCM2048_RDS_BLOCK_A 0x00 | |
231 | #define BCM2048_RDS_BLOCK_B 0x10 | |
232 | #define BCM2048_RDS_BLOCK_C 0x20 | |
233 | #define BCM2048_RDS_BLOCK_D 0x30 | |
234 | #define BCM2048_RDS_BLOCK_C_SCORED 0x40 | |
235 | #define BCM2048_RDS_BLOCK_E 0x60 | |
236 | ||
237 | #define BCM2048_RDS_RT 0x20 | |
238 | #define BCM2048_RDS_PS 0x00 | |
239 | ||
240 | #define BCM2048_RDS_GROUP_AB_MASK 0x08 | |
241 | #define BCM2048_RDS_GROUP_A 0x00 | |
242 | #define BCM2048_RDS_GROUP_B 0x08 | |
243 | ||
244 | #define BCM2048_RDS_RT_AB_MASK 0x10 | |
245 | #define BCM2048_RDS_RT_A 0x00 | |
246 | #define BCM2048_RDS_RT_B 0x10 | |
247 | #define BCM2048_RDS_RT_INDEX 0x0F | |
248 | ||
249 | #define BCM2048_RDS_PS_INDEX 0x03 | |
250 | ||
251 | struct rds_info { | |
252 | u16 rds_pi; | |
253 | #define BCM2048_MAX_RDS_RT (64 + 1) | |
254 | u8 rds_rt[BCM2048_MAX_RDS_RT]; | |
255 | u8 rds_rt_group_b; | |
256 | u8 rds_rt_ab; | |
257 | #define BCM2048_MAX_RDS_PS (8 + 1) | |
258 | u8 rds_ps[BCM2048_MAX_RDS_PS]; | |
259 | u8 rds_ps_group; | |
260 | u8 rds_ps_group_cnt; | |
261 | #define BCM2048_MAX_RDS_RADIO_TEXT 255 | |
262 | u8 radio_text[BCM2048_MAX_RDS_RADIO_TEXT + 3]; | |
263 | u8 text_len; | |
264 | }; | |
265 | ||
266 | struct region_info { | |
267 | u32 bottom_frequency; | |
268 | u32 top_frequency; | |
269 | u8 deemphasis; | |
270 | u8 channel_spacing; | |
271 | u8 region; | |
272 | }; | |
273 | ||
274 | struct bcm2048_device { | |
275 | struct i2c_client *client; | |
54ad7b9d | 276 | struct video_device videodev; |
899127b6 HV |
277 | struct work_struct work; |
278 | struct completion compl; | |
279 | struct mutex mutex; | |
280 | struct bcm2048_platform_data *platform_data; | |
281 | struct rds_info rds_info; | |
282 | struct region_info region_info; | |
283 | u16 frequency; | |
284 | u8 cache_fm_rds_system; | |
285 | u8 cache_fm_ctrl; | |
286 | u8 cache_fm_audio_ctrl0; | |
287 | u8 cache_fm_search_ctrl0; | |
288 | u8 power_state; | |
289 | u8 rds_state; | |
290 | u8 fifo_size; | |
291 | u8 scan_state; | |
292 | u8 mute_state; | |
293 | ||
294 | /* for rds data device read */ | |
295 | wait_queue_head_t read_queue; | |
296 | unsigned int users; | |
297 | unsigned char rds_data_available; | |
298 | unsigned int rd_index; | |
299 | }; | |
300 | ||
301 | static int radio_nr = -1; /* radio device minor (-1 ==> auto assign) */ | |
da52b8c3 | 302 | module_param(radio_nr, int, 0000); |
899127b6 HV |
303 | MODULE_PARM_DESC(radio_nr, |
304 | "Minor number for radio device (-1 ==> auto assign)"); | |
305 | ||
b05a4fa6 | 306 | static const struct region_info region_configs[] = { |
899127b6 HV |
307 | /* USA */ |
308 | { | |
309 | .channel_spacing = 20, | |
310 | .bottom_frequency = 87500, | |
311 | .top_frequency = 108000, | |
312 | .deemphasis = 75, | |
313 | .region = 0, | |
314 | }, | |
315 | /* Australia */ | |
316 | { | |
317 | .channel_spacing = 20, | |
318 | .bottom_frequency = 87500, | |
319 | .top_frequency = 108000, | |
320 | .deemphasis = 50, | |
321 | .region = 1, | |
322 | }, | |
323 | /* Europe */ | |
324 | { | |
325 | .channel_spacing = 10, | |
326 | .bottom_frequency = 87500, | |
327 | .top_frequency = 108000, | |
328 | .deemphasis = 50, | |
329 | .region = 2, | |
330 | }, | |
331 | /* Japan */ | |
332 | { | |
333 | .channel_spacing = 10, | |
334 | .bottom_frequency = 76000, | |
335 | .top_frequency = 90000, | |
336 | .deemphasis = 50, | |
337 | .region = 3, | |
338 | }, | |
899127b6 HV |
339 | }; |
340 | ||
341 | /* | |
342 | * I2C Interface read / write | |
343 | */ | |
344 | static int bcm2048_send_command(struct bcm2048_device *bdev, unsigned int reg, | |
925b6578 | 345 | unsigned int value) |
899127b6 HV |
346 | { |
347 | struct i2c_client *client = bdev->client; | |
348 | u8 data[2]; | |
349 | ||
350 | if (!bdev->power_state) { | |
351 | dev_err(&bdev->client->dev, "bcm2048: chip not powered!\n"); | |
352 | return -EIO; | |
353 | } | |
354 | ||
355 | data[0] = reg & 0xff; | |
356 | data[1] = value & 0xff; | |
357 | ||
b317d0f5 | 358 | if (i2c_master_send(client, data, 2) == 2) |
899127b6 | 359 | return 0; |
b317d0f5 LH |
360 | |
361 | dev_err(&bdev->client->dev, "BCM I2C error!\n"); | |
362 | dev_err(&bdev->client->dev, "Is Bluetooth up and running?\n"); | |
363 | return -EIO; | |
899127b6 HV |
364 | } |
365 | ||
366 | static int bcm2048_recv_command(struct bcm2048_device *bdev, unsigned int reg, | |
925b6578 | 367 | u8 *value) |
899127b6 HV |
368 | { |
369 | struct i2c_client *client = bdev->client; | |
370 | ||
371 | if (!bdev->power_state) { | |
372 | dev_err(&bdev->client->dev, "bcm2048: chip not powered!\n"); | |
373 | return -EIO; | |
374 | } | |
375 | ||
376 | value[0] = i2c_smbus_read_byte_data(client, reg & 0xff); | |
377 | ||
378 | return 0; | |
379 | } | |
380 | ||
381 | static int bcm2048_recv_duples(struct bcm2048_device *bdev, unsigned int reg, | |
925b6578 | 382 | u8 *value, u8 duples) |
899127b6 HV |
383 | { |
384 | struct i2c_client *client = bdev->client; | |
385 | struct i2c_adapter *adap = client->adapter; | |
386 | struct i2c_msg msg[2]; | |
387 | u8 buf; | |
388 | ||
389 | if (!bdev->power_state) { | |
390 | dev_err(&bdev->client->dev, "bcm2048: chip not powered!\n"); | |
391 | return -EIO; | |
392 | } | |
393 | ||
394 | buf = reg & 0xff; | |
395 | ||
396 | msg[0].addr = client->addr; | |
397 | msg[0].flags = client->flags & I2C_M_TEN; | |
398 | msg[0].len = 1; | |
399 | msg[0].buf = &buf; | |
400 | ||
401 | msg[1].addr = client->addr; | |
402 | msg[1].flags = client->flags & I2C_M_TEN; | |
403 | msg[1].flags |= I2C_M_RD; | |
404 | msg[1].len = duples; | |
405 | msg[1].buf = value; | |
406 | ||
407 | return i2c_transfer(adap, msg, 2); | |
408 | } | |
409 | ||
410 | /* | |
411 | * BCM2048 - I2C register programming helpers | |
412 | */ | |
413 | static int bcm2048_set_power_state(struct bcm2048_device *bdev, u8 power) | |
414 | { | |
415 | int err = 0; | |
416 | ||
417 | mutex_lock(&bdev->mutex); | |
418 | ||
419 | if (power) { | |
420 | bdev->power_state = BCM2048_POWER_ON; | |
421 | bdev->cache_fm_rds_system |= BCM2048_FM_ON; | |
422 | } else { | |
423 | bdev->cache_fm_rds_system &= ~BCM2048_FM_ON; | |
424 | } | |
425 | ||
426 | /* | |
427 | * Warning! FM cannot be turned off because then | |
428 | * the I2C communications get ruined! | |
429 | * Comment off the "if (power)" when the chip works! | |
430 | */ | |
431 | if (power) | |
432 | err = bcm2048_send_command(bdev, BCM2048_I2C_FM_RDS_SYSTEM, | |
925b6578 | 433 | bdev->cache_fm_rds_system); |
899127b6 HV |
434 | msleep(BCM2048_DEFAULT_POWERING_DELAY); |
435 | ||
436 | if (!power) | |
437 | bdev->power_state = BCM2048_POWER_OFF; | |
438 | ||
439 | mutex_unlock(&bdev->mutex); | |
440 | return err; | |
441 | } | |
442 | ||
443 | static int bcm2048_get_power_state(struct bcm2048_device *bdev) | |
444 | { | |
445 | int err; | |
446 | u8 value; | |
447 | ||
448 | mutex_lock(&bdev->mutex); | |
449 | ||
450 | err = bcm2048_recv_command(bdev, BCM2048_I2C_FM_RDS_SYSTEM, &value); | |
451 | ||
452 | mutex_unlock(&bdev->mutex); | |
453 | ||
454 | if (!err && (value & BCM2048_FM_ON)) | |
455 | return BCM2048_POWER_ON; | |
456 | ||
457 | return err; | |
458 | } | |
459 | ||
460 | static int bcm2048_set_rds_no_lock(struct bcm2048_device *bdev, u8 rds_on) | |
461 | { | |
462 | int err; | |
463 | u8 flags; | |
464 | ||
465 | bdev->cache_fm_rds_system &= ~BCM2048_RDS_ON; | |
466 | ||
467 | if (rds_on) { | |
468 | bdev->cache_fm_rds_system |= BCM2048_RDS_ON; | |
469 | bdev->rds_state = BCM2048_RDS_ON; | |
470 | flags = BCM2048_RDS_FLAG_FIFO_WLINE; | |
471 | err = bcm2048_send_command(bdev, BCM2048_I2C_FM_RDS_MASK1, | |
925b6578 | 472 | flags); |
899127b6 HV |
473 | } else { |
474 | flags = 0; | |
475 | bdev->rds_state = 0; | |
476 | err = bcm2048_send_command(bdev, BCM2048_I2C_FM_RDS_MASK1, | |
925b6578 | 477 | flags); |
899127b6 HV |
478 | memset(&bdev->rds_info, 0, sizeof(bdev->rds_info)); |
479 | } | |
1aeb5b61 MCC |
480 | if (err) |
481 | return err; | |
899127b6 | 482 | |
4b9fd698 RS |
483 | return bcm2048_send_command(bdev, BCM2048_I2C_FM_RDS_SYSTEM, |
484 | bdev->cache_fm_rds_system); | |
899127b6 HV |
485 | } |
486 | ||
487 | static int bcm2048_get_rds_no_lock(struct bcm2048_device *bdev) | |
488 | { | |
489 | int err; | |
490 | u8 value; | |
491 | ||
492 | err = bcm2048_recv_command(bdev, BCM2048_I2C_FM_RDS_SYSTEM, &value); | |
493 | ||
494 | if (!err && (value & BCM2048_RDS_ON)) | |
495 | return BCM2048_ITEM_ENABLED; | |
496 | ||
497 | return err; | |
498 | } | |
499 | ||
500 | static int bcm2048_set_rds(struct bcm2048_device *bdev, u8 rds_on) | |
501 | { | |
502 | int err; | |
503 | ||
504 | mutex_lock(&bdev->mutex); | |
505 | ||
506 | err = bcm2048_set_rds_no_lock(bdev, rds_on); | |
507 | ||
508 | mutex_unlock(&bdev->mutex); | |
509 | return err; | |
510 | } | |
511 | ||
512 | static int bcm2048_get_rds(struct bcm2048_device *bdev) | |
513 | { | |
514 | int err; | |
515 | ||
516 | mutex_lock(&bdev->mutex); | |
517 | ||
518 | err = bcm2048_get_rds_no_lock(bdev); | |
519 | ||
520 | mutex_unlock(&bdev->mutex); | |
521 | return err; | |
522 | } | |
523 | ||
524 | static int bcm2048_get_rds_pi(struct bcm2048_device *bdev) | |
525 | { | |
526 | return bdev->rds_info.rds_pi; | |
527 | } | |
528 | ||
529 | static int bcm2048_set_fm_automatic_stereo_mono(struct bcm2048_device *bdev, | |
530 | u8 enabled) | |
531 | { | |
532 | int err; | |
533 | ||
534 | mutex_lock(&bdev->mutex); | |
535 | ||
536 | bdev->cache_fm_ctrl &= ~BCM2048_STEREO_MONO_AUTO_SELECT; | |
537 | ||
538 | if (enabled) | |
539 | bdev->cache_fm_ctrl |= BCM2048_STEREO_MONO_AUTO_SELECT; | |
540 | ||
541 | err = bcm2048_send_command(bdev, BCM2048_I2C_FM_CTRL, | |
925b6578 | 542 | bdev->cache_fm_ctrl); |
899127b6 HV |
543 | |
544 | mutex_unlock(&bdev->mutex); | |
545 | return err; | |
546 | } | |
547 | ||
548 | static int bcm2048_set_fm_hi_lo_injection(struct bcm2048_device *bdev, | |
925b6578 | 549 | u8 hi_lo) |
899127b6 HV |
550 | { |
551 | int err; | |
552 | ||
553 | mutex_lock(&bdev->mutex); | |
554 | ||
555 | bdev->cache_fm_ctrl &= ~BCM2048_HI_LO_INJECTION; | |
556 | ||
557 | if (hi_lo) | |
558 | bdev->cache_fm_ctrl |= BCM2048_HI_LO_INJECTION; | |
559 | ||
560 | err = bcm2048_send_command(bdev, BCM2048_I2C_FM_CTRL, | |
925b6578 | 561 | bdev->cache_fm_ctrl); |
899127b6 HV |
562 | |
563 | mutex_unlock(&bdev->mutex); | |
564 | return err; | |
565 | } | |
566 | ||
567 | static int bcm2048_get_fm_hi_lo_injection(struct bcm2048_device *bdev) | |
568 | { | |
569 | int err; | |
570 | u8 value; | |
571 | ||
572 | mutex_lock(&bdev->mutex); | |
573 | ||
574 | err = bcm2048_recv_command(bdev, BCM2048_I2C_FM_CTRL, &value); | |
575 | ||
576 | mutex_unlock(&bdev->mutex); | |
577 | ||
578 | if (!err && (value & BCM2048_HI_LO_INJECTION)) | |
579 | return BCM2048_ITEM_ENABLED; | |
580 | ||
581 | return err; | |
582 | } | |
583 | ||
584 | static int bcm2048_set_fm_frequency(struct bcm2048_device *bdev, u32 frequency) | |
585 | { | |
586 | int err; | |
587 | ||
588 | if (frequency < bdev->region_info.bottom_frequency || | |
925b6578 | 589 | frequency > bdev->region_info.top_frequency) |
899127b6 HV |
590 | return -EDOM; |
591 | ||
592 | frequency -= BCM2048_FREQUENCY_BASE; | |
593 | ||
594 | mutex_lock(&bdev->mutex); | |
595 | ||
596 | err = bcm2048_send_command(bdev, BCM2048_I2C_FM_FREQ0, lsb(frequency)); | |
597 | err |= bcm2048_send_command(bdev, BCM2048_I2C_FM_FREQ1, | |
925b6578 | 598 | msb(frequency)); |
899127b6 HV |
599 | |
600 | if (!err) | |
601 | bdev->frequency = frequency; | |
602 | ||
603 | mutex_unlock(&bdev->mutex); | |
604 | return err; | |
605 | } | |
606 | ||
607 | static int bcm2048_get_fm_frequency(struct bcm2048_device *bdev) | |
608 | { | |
609 | int err; | |
a1f8c0cf | 610 | u8 lsb = 0, msb = 0; |
899127b6 HV |
611 | |
612 | mutex_lock(&bdev->mutex); | |
613 | ||
614 | err = bcm2048_recv_command(bdev, BCM2048_I2C_FM_FREQ0, &lsb); | |
615 | err |= bcm2048_recv_command(bdev, BCM2048_I2C_FM_FREQ1, &msb); | |
616 | ||
617 | mutex_unlock(&bdev->mutex); | |
618 | ||
619 | if (err) | |
620 | return err; | |
621 | ||
622 | err = compose_u16(msb, lsb); | |
623 | err += BCM2048_FREQUENCY_BASE; | |
624 | ||
625 | return err; | |
626 | } | |
627 | ||
628 | static int bcm2048_set_fm_af_frequency(struct bcm2048_device *bdev, | |
925b6578 | 629 | u32 frequency) |
899127b6 HV |
630 | { |
631 | int err; | |
632 | ||
633 | if (frequency < bdev->region_info.bottom_frequency || | |
925b6578 | 634 | frequency > bdev->region_info.top_frequency) |
899127b6 HV |
635 | return -EDOM; |
636 | ||
637 | frequency -= BCM2048_FREQUENCY_BASE; | |
638 | ||
639 | mutex_lock(&bdev->mutex); | |
640 | ||
641 | err = bcm2048_send_command(bdev, BCM2048_I2C_FM_AF_FREQ0, | |
925b6578 | 642 | lsb(frequency)); |
899127b6 | 643 | err |= bcm2048_send_command(bdev, BCM2048_I2C_FM_AF_FREQ1, |
925b6578 | 644 | msb(frequency)); |
899127b6 HV |
645 | if (!err) |
646 | bdev->frequency = frequency; | |
647 | ||
648 | mutex_unlock(&bdev->mutex); | |
649 | return err; | |
650 | } | |
651 | ||
652 | static int bcm2048_get_fm_af_frequency(struct bcm2048_device *bdev) | |
653 | { | |
654 | int err; | |
a1f8c0cf | 655 | u8 lsb = 0, msb = 0; |
899127b6 HV |
656 | |
657 | mutex_lock(&bdev->mutex); | |
658 | ||
659 | err = bcm2048_recv_command(bdev, BCM2048_I2C_FM_AF_FREQ0, &lsb); | |
660 | err |= bcm2048_recv_command(bdev, BCM2048_I2C_FM_AF_FREQ1, &msb); | |
661 | ||
662 | mutex_unlock(&bdev->mutex); | |
663 | ||
664 | if (err) | |
665 | return err; | |
666 | ||
667 | err = compose_u16(msb, lsb); | |
668 | err += BCM2048_FREQUENCY_BASE; | |
669 | ||
670 | return err; | |
671 | } | |
672 | ||
673 | static int bcm2048_set_fm_deemphasis(struct bcm2048_device *bdev, int d) | |
674 | { | |
675 | int err; | |
676 | u8 deemphasis; | |
677 | ||
678 | if (d == BCM2048_DE_EMPHASIS_75us) | |
679 | deemphasis = BCM2048_DE_EMPHASIS_SELECT; | |
680 | else | |
681 | deemphasis = 0; | |
682 | ||
683 | mutex_lock(&bdev->mutex); | |
684 | ||
685 | bdev->cache_fm_audio_ctrl0 &= ~BCM2048_DE_EMPHASIS_SELECT; | |
686 | bdev->cache_fm_audio_ctrl0 |= deemphasis; | |
687 | ||
688 | err = bcm2048_send_command(bdev, BCM2048_I2C_FM_AUDIO_CTRL0, | |
925b6578 | 689 | bdev->cache_fm_audio_ctrl0); |
899127b6 HV |
690 | |
691 | if (!err) | |
692 | bdev->region_info.deemphasis = d; | |
693 | ||
694 | mutex_unlock(&bdev->mutex); | |
695 | ||
696 | return err; | |
697 | } | |
698 | ||
699 | static int bcm2048_get_fm_deemphasis(struct bcm2048_device *bdev) | |
700 | { | |
701 | int err; | |
702 | u8 value; | |
703 | ||
704 | mutex_lock(&bdev->mutex); | |
705 | ||
706 | err = bcm2048_recv_command(bdev, BCM2048_I2C_FM_AUDIO_CTRL0, &value); | |
707 | ||
708 | mutex_unlock(&bdev->mutex); | |
709 | ||
710 | if (!err) { | |
711 | if (value & BCM2048_DE_EMPHASIS_SELECT) | |
712 | return BCM2048_DE_EMPHASIS_75us; | |
b317d0f5 LH |
713 | |
714 | return BCM2048_DE_EMPHASIS_50us; | |
899127b6 HV |
715 | } |
716 | ||
717 | return err; | |
718 | } | |
719 | ||
720 | static int bcm2048_set_region(struct bcm2048_device *bdev, u8 region) | |
721 | { | |
722 | int err; | |
723 | u32 new_frequency = 0; | |
724 | ||
5d60122b | 725 | if (region >= ARRAY_SIZE(region_configs)) |
899127b6 HV |
726 | return -EINVAL; |
727 | ||
728 | mutex_lock(&bdev->mutex); | |
65eccc7a | 729 | bdev->region_info = region_configs[region]; |
e6cf0c40 JR |
730 | |
731 | if (region_configs[region].bottom_frequency < 87500) | |
732 | bdev->cache_fm_ctrl |= BCM2048_BAND_SELECT; | |
733 | else | |
734 | bdev->cache_fm_ctrl &= ~BCM2048_BAND_SELECT; | |
735 | ||
736 | err = bcm2048_send_command(bdev, BCM2048_I2C_FM_CTRL, | |
925b6578 | 737 | bdev->cache_fm_ctrl); |
e6cf0c40 JR |
738 | if (err) { |
739 | mutex_unlock(&bdev->mutex); | |
740 | goto done; | |
741 | } | |
899127b6 HV |
742 | mutex_unlock(&bdev->mutex); |
743 | ||
744 | if (bdev->frequency < region_configs[region].bottom_frequency || | |
925b6578 | 745 | bdev->frequency > region_configs[region].top_frequency) |
899127b6 HV |
746 | new_frequency = region_configs[region].bottom_frequency; |
747 | ||
748 | if (new_frequency > 0) { | |
749 | err = bcm2048_set_fm_frequency(bdev, new_frequency); | |
750 | ||
751 | if (err) | |
752 | goto done; | |
753 | } | |
754 | ||
755 | err = bcm2048_set_fm_deemphasis(bdev, | |
925b6578 | 756 | region_configs[region].deemphasis); |
899127b6 HV |
757 | |
758 | done: | |
759 | return err; | |
760 | } | |
761 | ||
762 | static int bcm2048_get_region(struct bcm2048_device *bdev) | |
763 | { | |
764 | int err; | |
765 | ||
766 | mutex_lock(&bdev->mutex); | |
767 | err = bdev->region_info.region; | |
768 | mutex_unlock(&bdev->mutex); | |
769 | ||
770 | return err; | |
771 | } | |
772 | ||
773 | static int bcm2048_set_mute(struct bcm2048_device *bdev, u16 mute) | |
774 | { | |
775 | int err; | |
776 | ||
777 | mutex_lock(&bdev->mutex); | |
778 | ||
779 | bdev->cache_fm_audio_ctrl0 &= ~(BCM2048_RF_MUTE | BCM2048_MANUAL_MUTE); | |
780 | ||
781 | if (mute) | |
782 | bdev->cache_fm_audio_ctrl0 |= (BCM2048_RF_MUTE | | |
925b6578 | 783 | BCM2048_MANUAL_MUTE); |
899127b6 HV |
784 | |
785 | err = bcm2048_send_command(bdev, BCM2048_I2C_FM_AUDIO_CTRL0, | |
925b6578 | 786 | bdev->cache_fm_audio_ctrl0); |
899127b6 HV |
787 | |
788 | if (!err) | |
789 | bdev->mute_state = mute; | |
790 | ||
791 | mutex_unlock(&bdev->mutex); | |
792 | return err; | |
793 | } | |
794 | ||
795 | static int bcm2048_get_mute(struct bcm2048_device *bdev) | |
796 | { | |
797 | int err; | |
798 | u8 value; | |
799 | ||
800 | mutex_lock(&bdev->mutex); | |
801 | ||
802 | if (bdev->power_state) { | |
803 | err = bcm2048_recv_command(bdev, BCM2048_I2C_FM_AUDIO_CTRL0, | |
925b6578 | 804 | &value); |
899127b6 HV |
805 | if (!err) |
806 | err = value & (BCM2048_RF_MUTE | BCM2048_MANUAL_MUTE); | |
807 | } else { | |
808 | err = bdev->mute_state; | |
809 | } | |
810 | ||
811 | mutex_unlock(&bdev->mutex); | |
812 | return err; | |
813 | } | |
814 | ||
815 | static int bcm2048_set_audio_route(struct bcm2048_device *bdev, u8 route) | |
816 | { | |
817 | int err; | |
818 | ||
819 | mutex_lock(&bdev->mutex); | |
820 | ||
821 | route &= (BCM2048_AUDIO_ROUTE_DAC | BCM2048_AUDIO_ROUTE_I2S); | |
822 | bdev->cache_fm_audio_ctrl0 &= ~(BCM2048_AUDIO_ROUTE_DAC | | |
925b6578 | 823 | BCM2048_AUDIO_ROUTE_I2S); |
899127b6 HV |
824 | bdev->cache_fm_audio_ctrl0 |= route; |
825 | ||
826 | err = bcm2048_send_command(bdev, BCM2048_I2C_FM_AUDIO_CTRL0, | |
925b6578 | 827 | bdev->cache_fm_audio_ctrl0); |
899127b6 HV |
828 | |
829 | mutex_unlock(&bdev->mutex); | |
830 | return err; | |
831 | } | |
832 | ||
833 | static int bcm2048_get_audio_route(struct bcm2048_device *bdev) | |
834 | { | |
835 | int err; | |
836 | u8 value; | |
837 | ||
838 | mutex_lock(&bdev->mutex); | |
839 | ||
840 | err = bcm2048_recv_command(bdev, BCM2048_I2C_FM_AUDIO_CTRL0, &value); | |
841 | ||
842 | mutex_unlock(&bdev->mutex); | |
843 | ||
844 | if (!err) | |
845 | return value & (BCM2048_AUDIO_ROUTE_DAC | | |
925b6578 | 846 | BCM2048_AUDIO_ROUTE_I2S); |
899127b6 HV |
847 | |
848 | return err; | |
849 | } | |
850 | ||
851 | static int bcm2048_set_dac_output(struct bcm2048_device *bdev, u8 channels) | |
852 | { | |
853 | int err; | |
854 | ||
855 | mutex_lock(&bdev->mutex); | |
856 | ||
857 | bdev->cache_fm_audio_ctrl0 &= ~(BCM2048_DAC_OUTPUT_LEFT | | |
858 | BCM2048_DAC_OUTPUT_RIGHT); | |
859 | bdev->cache_fm_audio_ctrl0 |= channels; | |
860 | ||
861 | err = bcm2048_send_command(bdev, BCM2048_I2C_FM_AUDIO_CTRL0, | |
925b6578 | 862 | bdev->cache_fm_audio_ctrl0); |
899127b6 HV |
863 | |
864 | mutex_unlock(&bdev->mutex); | |
865 | return err; | |
866 | } | |
867 | ||
868 | static int bcm2048_get_dac_output(struct bcm2048_device *bdev) | |
869 | { | |
870 | int err; | |
871 | u8 value; | |
872 | ||
873 | mutex_lock(&bdev->mutex); | |
874 | ||
875 | err = bcm2048_recv_command(bdev, BCM2048_I2C_FM_AUDIO_CTRL0, &value); | |
876 | ||
877 | mutex_unlock(&bdev->mutex); | |
878 | ||
879 | if (!err) | |
880 | return value & (BCM2048_DAC_OUTPUT_LEFT | | |
925b6578 | 881 | BCM2048_DAC_OUTPUT_RIGHT); |
899127b6 HV |
882 | |
883 | return err; | |
884 | } | |
885 | ||
886 | static int bcm2048_set_fm_search_rssi_threshold(struct bcm2048_device *bdev, | |
925b6578 | 887 | u8 threshold) |
899127b6 HV |
888 | { |
889 | int err; | |
890 | ||
891 | mutex_lock(&bdev->mutex); | |
892 | ||
893 | threshold &= BCM2048_SEARCH_RSSI_THRESHOLD; | |
894 | bdev->cache_fm_search_ctrl0 &= ~BCM2048_SEARCH_RSSI_THRESHOLD; | |
895 | bdev->cache_fm_search_ctrl0 |= threshold; | |
896 | ||
897 | err = bcm2048_send_command(bdev, BCM2048_I2C_FM_SEARCH_CTRL0, | |
925b6578 | 898 | bdev->cache_fm_search_ctrl0); |
899127b6 HV |
899 | |
900 | mutex_unlock(&bdev->mutex); | |
901 | return err; | |
902 | } | |
903 | ||
904 | static int bcm2048_get_fm_search_rssi_threshold(struct bcm2048_device *bdev) | |
905 | { | |
906 | int err; | |
907 | u8 value; | |
908 | ||
909 | mutex_lock(&bdev->mutex); | |
910 | ||
911 | err = bcm2048_recv_command(bdev, BCM2048_I2C_FM_SEARCH_CTRL0, &value); | |
912 | ||
913 | mutex_unlock(&bdev->mutex); | |
914 | ||
915 | if (!err) | |
916 | return value & BCM2048_SEARCH_RSSI_THRESHOLD; | |
917 | ||
918 | return err; | |
919 | } | |
920 | ||
921 | static int bcm2048_set_fm_search_mode_direction(struct bcm2048_device *bdev, | |
922 | u8 direction) | |
923 | { | |
924 | int err; | |
925 | ||
926 | mutex_lock(&bdev->mutex); | |
927 | ||
928 | bdev->cache_fm_search_ctrl0 &= ~BCM2048_SEARCH_DIRECTION; | |
929 | ||
930 | if (direction) | |
931 | bdev->cache_fm_search_ctrl0 |= BCM2048_SEARCH_DIRECTION; | |
932 | ||
933 | err = bcm2048_send_command(bdev, BCM2048_I2C_FM_SEARCH_CTRL0, | |
925b6578 | 934 | bdev->cache_fm_search_ctrl0); |
899127b6 HV |
935 | |
936 | mutex_unlock(&bdev->mutex); | |
937 | return err; | |
938 | } | |
939 | ||
940 | static int bcm2048_get_fm_search_mode_direction(struct bcm2048_device *bdev) | |
941 | { | |
942 | int err; | |
943 | u8 value; | |
944 | ||
945 | mutex_lock(&bdev->mutex); | |
946 | ||
947 | err = bcm2048_recv_command(bdev, BCM2048_I2C_FM_SEARCH_CTRL0, &value); | |
948 | ||
949 | mutex_unlock(&bdev->mutex); | |
950 | ||
951 | if (!err && (value & BCM2048_SEARCH_DIRECTION)) | |
952 | return BCM2048_SEARCH_DIRECTION_UP; | |
953 | ||
954 | return err; | |
955 | } | |
956 | ||
957 | static int bcm2048_set_fm_search_tune_mode(struct bcm2048_device *bdev, | |
925b6578 | 958 | u8 mode) |
899127b6 HV |
959 | { |
960 | int err, timeout, restart_rds = 0; | |
961 | u8 value, flags; | |
962 | ||
963 | value = mode & BCM2048_FM_AUTO_SEARCH; | |
964 | ||
965 | flags = BCM2048_FM_FLAG_SEARCH_TUNE_FINISHED | | |
966 | BCM2048_FM_FLAG_SEARCH_TUNE_FAIL; | |
967 | ||
968 | mutex_lock(&bdev->mutex); | |
969 | ||
970 | /* | |
971 | * If RDS is enabled, and frequency is changed, RDS quits working. | |
972 | * Thus, always restart RDS if it's enabled. Moreover, RDS must | |
973 | * not be enabled while changing the frequency because it can | |
974 | * provide a race to the mutex from the workqueue handler if RDS | |
975 | * IRQ occurs while waiting for frequency changed IRQ. | |
976 | */ | |
977 | if (bcm2048_get_rds_no_lock(bdev)) { | |
978 | err = bcm2048_set_rds_no_lock(bdev, 0); | |
979 | if (err) | |
980 | goto unlock; | |
981 | restart_rds = 1; | |
982 | } | |
983 | ||
984 | err = bcm2048_send_command(bdev, BCM2048_I2C_FM_RDS_MASK0, flags); | |
985 | ||
986 | if (err) | |
987 | goto unlock; | |
988 | ||
989 | bcm2048_send_command(bdev, BCM2048_I2C_FM_SEARCH_TUNE_MODE, value); | |
990 | ||
991 | if (mode != BCM2048_FM_AUTO_SEARCH_MODE) | |
992 | timeout = BCM2048_DEFAULT_TIMEOUT; | |
993 | else | |
994 | timeout = BCM2048_AUTO_SEARCH_TIMEOUT; | |
995 | ||
996 | if (!wait_for_completion_timeout(&bdev->compl, | |
3194e858 | 997 | msecs_to_jiffies(timeout))) |
21312f6d | 998 | dev_err(&bdev->client->dev, "IRQ timeout.\n"); |
899127b6 HV |
999 | |
1000 | if (value) | |
1001 | if (!bdev->scan_state) | |
1002 | err = -EIO; | |
1003 | ||
1004 | unlock: | |
1005 | if (restart_rds) | |
1006 | err |= bcm2048_set_rds_no_lock(bdev, 1); | |
1007 | ||
1008 | mutex_unlock(&bdev->mutex); | |
1009 | ||
1010 | return err; | |
1011 | } | |
1012 | ||
1013 | static int bcm2048_get_fm_search_tune_mode(struct bcm2048_device *bdev) | |
1014 | { | |
1015 | int err; | |
1016 | u8 value; | |
1017 | ||
1018 | mutex_lock(&bdev->mutex); | |
1019 | ||
1020 | err = bcm2048_recv_command(bdev, BCM2048_I2C_FM_SEARCH_TUNE_MODE, | |
925b6578 | 1021 | &value); |
899127b6 HV |
1022 | |
1023 | mutex_unlock(&bdev->mutex); | |
1024 | ||
1025 | if (!err) | |
1026 | return value & BCM2048_FM_AUTO_SEARCH; | |
1027 | ||
1028 | return err; | |
1029 | } | |
1030 | ||
1031 | static int bcm2048_set_rds_b_block_mask(struct bcm2048_device *bdev, u16 mask) | |
1032 | { | |
1033 | int err; | |
1034 | ||
1035 | mutex_lock(&bdev->mutex); | |
1036 | ||
925b6578 AG |
1037 | err = bcm2048_send_command(bdev, BCM2048_I2C_RDS_BLKB_MASK0, |
1038 | lsb(mask)); | |
1039 | err |= bcm2048_send_command(bdev, BCM2048_I2C_RDS_BLKB_MASK1, | |
1040 | msb(mask)); | |
899127b6 HV |
1041 | |
1042 | mutex_unlock(&bdev->mutex); | |
1043 | return err; | |
1044 | } | |
1045 | ||
1046 | static int bcm2048_get_rds_b_block_mask(struct bcm2048_device *bdev) | |
1047 | { | |
1048 | int err; | |
a1f8c0cf | 1049 | u8 lsb = 0, msb = 0; |
899127b6 HV |
1050 | |
1051 | mutex_lock(&bdev->mutex); | |
1052 | ||
925b6578 AG |
1053 | err = bcm2048_recv_command(bdev, BCM2048_I2C_RDS_BLKB_MASK0, &lsb); |
1054 | err |= bcm2048_recv_command(bdev, BCM2048_I2C_RDS_BLKB_MASK1, &msb); | |
899127b6 HV |
1055 | |
1056 | mutex_unlock(&bdev->mutex); | |
1057 | ||
1058 | if (!err) | |
1059 | return compose_u16(msb, lsb); | |
1060 | ||
1061 | return err; | |
1062 | } | |
1063 | ||
1064 | static int bcm2048_set_rds_b_block_match(struct bcm2048_device *bdev, | |
925b6578 | 1065 | u16 match) |
899127b6 HV |
1066 | { |
1067 | int err; | |
1068 | ||
1069 | mutex_lock(&bdev->mutex); | |
1070 | ||
925b6578 AG |
1071 | err = bcm2048_send_command(bdev, BCM2048_I2C_RDS_BLKB_MATCH0, |
1072 | lsb(match)); | |
1073 | err |= bcm2048_send_command(bdev, BCM2048_I2C_RDS_BLKB_MATCH1, | |
1074 | msb(match)); | |
899127b6 HV |
1075 | |
1076 | mutex_unlock(&bdev->mutex); | |
1077 | return err; | |
1078 | } | |
1079 | ||
1080 | static int bcm2048_get_rds_b_block_match(struct bcm2048_device *bdev) | |
1081 | { | |
1082 | int err; | |
a1f8c0cf | 1083 | u8 lsb = 0, msb = 0; |
899127b6 HV |
1084 | |
1085 | mutex_lock(&bdev->mutex); | |
1086 | ||
925b6578 AG |
1087 | err = bcm2048_recv_command(bdev, BCM2048_I2C_RDS_BLKB_MATCH0, &lsb); |
1088 | err |= bcm2048_recv_command(bdev, BCM2048_I2C_RDS_BLKB_MATCH1, &msb); | |
899127b6 HV |
1089 | |
1090 | mutex_unlock(&bdev->mutex); | |
1091 | ||
1092 | if (!err) | |
1093 | return compose_u16(msb, lsb); | |
1094 | ||
1095 | return err; | |
1096 | } | |
1097 | ||
1098 | static int bcm2048_set_rds_pi_mask(struct bcm2048_device *bdev, u16 mask) | |
1099 | { | |
1100 | int err; | |
1101 | ||
1102 | mutex_lock(&bdev->mutex); | |
1103 | ||
925b6578 AG |
1104 | err = bcm2048_send_command(bdev, BCM2048_I2C_RDS_PI_MASK0, lsb(mask)); |
1105 | err |= bcm2048_send_command(bdev, BCM2048_I2C_RDS_PI_MASK1, msb(mask)); | |
899127b6 HV |
1106 | |
1107 | mutex_unlock(&bdev->mutex); | |
1108 | return err; | |
1109 | } | |
1110 | ||
1111 | static int bcm2048_get_rds_pi_mask(struct bcm2048_device *bdev) | |
1112 | { | |
1113 | int err; | |
a1f8c0cf | 1114 | u8 lsb = 0, msb = 0; |
899127b6 HV |
1115 | |
1116 | mutex_lock(&bdev->mutex); | |
1117 | ||
925b6578 AG |
1118 | err = bcm2048_recv_command(bdev, BCM2048_I2C_RDS_PI_MASK0, &lsb); |
1119 | err |= bcm2048_recv_command(bdev, BCM2048_I2C_RDS_PI_MASK1, &msb); | |
899127b6 HV |
1120 | |
1121 | mutex_unlock(&bdev->mutex); | |
1122 | ||
1123 | if (!err) | |
1124 | return compose_u16(msb, lsb); | |
1125 | ||
1126 | return err; | |
1127 | } | |
1128 | ||
1129 | static int bcm2048_set_rds_pi_match(struct bcm2048_device *bdev, u16 match) | |
1130 | { | |
1131 | int err; | |
1132 | ||
1133 | mutex_lock(&bdev->mutex); | |
1134 | ||
925b6578 AG |
1135 | err = bcm2048_send_command(bdev, BCM2048_I2C_RDS_PI_MATCH0, |
1136 | lsb(match)); | |
1137 | err |= bcm2048_send_command(bdev, BCM2048_I2C_RDS_PI_MATCH1, | |
1138 | msb(match)); | |
899127b6 HV |
1139 | |
1140 | mutex_unlock(&bdev->mutex); | |
1141 | return err; | |
1142 | } | |
1143 | ||
1144 | static int bcm2048_get_rds_pi_match(struct bcm2048_device *bdev) | |
1145 | { | |
1146 | int err; | |
a1f8c0cf | 1147 | u8 lsb = 0, msb = 0; |
899127b6 HV |
1148 | |
1149 | mutex_lock(&bdev->mutex); | |
1150 | ||
925b6578 AG |
1151 | err = bcm2048_recv_command(bdev, BCM2048_I2C_RDS_PI_MATCH0, &lsb); |
1152 | err |= bcm2048_recv_command(bdev, BCM2048_I2C_RDS_PI_MATCH1, &msb); | |
899127b6 HV |
1153 | |
1154 | mutex_unlock(&bdev->mutex); | |
1155 | ||
1156 | if (!err) | |
1157 | return compose_u16(msb, lsb); | |
1158 | ||
1159 | return err; | |
1160 | } | |
1161 | ||
1162 | static int bcm2048_set_fm_rds_mask(struct bcm2048_device *bdev, u16 mask) | |
1163 | { | |
1164 | int err; | |
1165 | ||
1166 | mutex_lock(&bdev->mutex); | |
1167 | ||
925b6578 AG |
1168 | err = bcm2048_send_command(bdev, BCM2048_I2C_FM_RDS_MASK0, lsb(mask)); |
1169 | err |= bcm2048_send_command(bdev, BCM2048_I2C_FM_RDS_MASK1, msb(mask)); | |
899127b6 HV |
1170 | |
1171 | mutex_unlock(&bdev->mutex); | |
1172 | return err; | |
1173 | } | |
1174 | ||
1175 | static int bcm2048_get_fm_rds_mask(struct bcm2048_device *bdev) | |
1176 | { | |
1177 | int err; | |
a1f8c0cf | 1178 | u8 value0 = 0, value1 = 0; |
899127b6 HV |
1179 | |
1180 | mutex_lock(&bdev->mutex); | |
1181 | ||
1182 | err = bcm2048_recv_command(bdev, BCM2048_I2C_FM_RDS_MASK0, &value0); | |
1183 | err |= bcm2048_recv_command(bdev, BCM2048_I2C_FM_RDS_MASK1, &value1); | |
1184 | ||
1185 | mutex_unlock(&bdev->mutex); | |
1186 | ||
1187 | if (!err) | |
1188 | return compose_u16(value1, value0); | |
1189 | ||
1190 | return err; | |
1191 | } | |
1192 | ||
1193 | static int bcm2048_get_fm_rds_flags(struct bcm2048_device *bdev) | |
1194 | { | |
1195 | int err; | |
a1f8c0cf | 1196 | u8 value0 = 0, value1 = 0; |
899127b6 HV |
1197 | |
1198 | mutex_lock(&bdev->mutex); | |
1199 | ||
1200 | err = bcm2048_recv_command(bdev, BCM2048_I2C_FM_RDS_FLAG0, &value0); | |
1201 | err |= bcm2048_recv_command(bdev, BCM2048_I2C_FM_RDS_FLAG1, &value1); | |
1202 | ||
1203 | mutex_unlock(&bdev->mutex); | |
1204 | ||
1205 | if (!err) | |
1206 | return compose_u16(value1, value0); | |
1207 | ||
1208 | return err; | |
1209 | } | |
1210 | ||
1211 | static int bcm2048_get_region_bottom_frequency(struct bcm2048_device *bdev) | |
1212 | { | |
1213 | return bdev->region_info.bottom_frequency; | |
1214 | } | |
1215 | ||
1216 | static int bcm2048_get_region_top_frequency(struct bcm2048_device *bdev) | |
1217 | { | |
1218 | return bdev->region_info.top_frequency; | |
1219 | } | |
1220 | ||
1221 | static int bcm2048_set_fm_best_tune_mode(struct bcm2048_device *bdev, u8 mode) | |
1222 | { | |
1223 | int err; | |
a1f8c0cf | 1224 | u8 value = 0; |
899127b6 HV |
1225 | |
1226 | mutex_lock(&bdev->mutex); | |
1227 | ||
1228 | /* Perform read as the manual indicates */ | |
1229 | err = bcm2048_recv_command(bdev, BCM2048_I2C_FM_BEST_TUNE_MODE, | |
925b6578 | 1230 | &value); |
899127b6 HV |
1231 | value &= ~BCM2048_BEST_TUNE_MODE; |
1232 | ||
1233 | if (mode) | |
1234 | value |= BCM2048_BEST_TUNE_MODE; | |
1235 | err |= bcm2048_send_command(bdev, BCM2048_I2C_FM_BEST_TUNE_MODE, | |
925b6578 | 1236 | value); |
899127b6 HV |
1237 | |
1238 | mutex_unlock(&bdev->mutex); | |
1239 | return err; | |
1240 | } | |
1241 | ||
1242 | static int bcm2048_get_fm_best_tune_mode(struct bcm2048_device *bdev) | |
1243 | { | |
1244 | int err; | |
1245 | u8 value; | |
1246 | ||
1247 | mutex_lock(&bdev->mutex); | |
1248 | ||
1249 | err = bcm2048_recv_command(bdev, BCM2048_I2C_FM_BEST_TUNE_MODE, | |
925b6578 | 1250 | &value); |
899127b6 HV |
1251 | |
1252 | mutex_unlock(&bdev->mutex); | |
1253 | ||
1254 | if (!err && (value & BCM2048_BEST_TUNE_MODE)) | |
1255 | return BCM2048_ITEM_ENABLED; | |
1256 | ||
1257 | return err; | |
1258 | } | |
1259 | ||
1260 | static int bcm2048_get_fm_carrier_error(struct bcm2048_device *bdev) | |
1261 | { | |
1262 | int err = 0; | |
1263 | s8 value; | |
1264 | ||
1265 | mutex_lock(&bdev->mutex); | |
1266 | err = bcm2048_recv_command(bdev, BCM2048_I2C_FM_CARRIER, &value); | |
1267 | mutex_unlock(&bdev->mutex); | |
1268 | ||
1269 | if (!err) | |
1270 | return value; | |
1271 | ||
1272 | return err; | |
1273 | } | |
1274 | ||
1275 | static int bcm2048_get_fm_rssi(struct bcm2048_device *bdev) | |
1276 | { | |
1277 | int err; | |
1278 | s8 value; | |
1279 | ||
1280 | mutex_lock(&bdev->mutex); | |
1281 | err = bcm2048_recv_command(bdev, BCM2048_I2C_FM_RSSI, &value); | |
1282 | mutex_unlock(&bdev->mutex); | |
1283 | ||
1284 | if (!err) | |
1285 | return value; | |
1286 | ||
1287 | return err; | |
1288 | } | |
1289 | ||
1290 | static int bcm2048_set_rds_wline(struct bcm2048_device *bdev, u8 wline) | |
1291 | { | |
1292 | int err; | |
1293 | ||
1294 | mutex_lock(&bdev->mutex); | |
1295 | ||
1296 | err = bcm2048_send_command(bdev, BCM2048_I2C_RDS_WLINE, wline); | |
1297 | ||
1298 | if (!err) | |
1299 | bdev->fifo_size = wline; | |
1300 | ||
1301 | mutex_unlock(&bdev->mutex); | |
1302 | return err; | |
1303 | } | |
1304 | ||
1305 | static int bcm2048_get_rds_wline(struct bcm2048_device *bdev) | |
1306 | { | |
1307 | int err; | |
1308 | u8 value; | |
1309 | ||
1310 | mutex_lock(&bdev->mutex); | |
1311 | ||
1312 | err = bcm2048_recv_command(bdev, BCM2048_I2C_RDS_WLINE, &value); | |
1313 | ||
1314 | mutex_unlock(&bdev->mutex); | |
1315 | ||
1316 | if (!err) { | |
1317 | bdev->fifo_size = value; | |
1318 | return value; | |
1319 | } | |
1320 | ||
1321 | return err; | |
1322 | } | |
1323 | ||
1324 | static int bcm2048_checkrev(struct bcm2048_device *bdev) | |
1325 | { | |
1326 | int err; | |
1327 | u8 version; | |
1328 | ||
1329 | mutex_lock(&bdev->mutex); | |
1330 | ||
1331 | err = bcm2048_recv_command(bdev, BCM2048_I2C_FM_RDS_REV, &version); | |
1332 | ||
1333 | mutex_unlock(&bdev->mutex); | |
1334 | ||
1335 | if (!err) { | |
1336 | dev_info(&bdev->client->dev, "BCM2048 Version 0x%x\n", | |
925b6578 | 1337 | version); |
899127b6 HV |
1338 | return version; |
1339 | } | |
1340 | ||
1341 | return err; | |
1342 | } | |
1343 | ||
1344 | static int bcm2048_get_rds_rt(struct bcm2048_device *bdev, char *data) | |
1345 | { | |
1346 | int err = 0, i, j = 0, ce = 0, cr = 0; | |
3ac086fb | 1347 | char data_buffer[BCM2048_MAX_RDS_RT + 1]; |
899127b6 HV |
1348 | |
1349 | mutex_lock(&bdev->mutex); | |
1350 | ||
1351 | if (!bdev->rds_info.text_len) { | |
1352 | err = -EINVAL; | |
1353 | goto unlock; | |
1354 | } | |
1355 | ||
1356 | for (i = 0; i < BCM2048_MAX_RDS_RT; i++) { | |
1357 | if (bdev->rds_info.rds_rt[i]) { | |
1358 | ce = i; | |
1359 | /* Skip the carriage return */ | |
1360 | if (bdev->rds_info.rds_rt[i] != 0x0d) { | |
1361 | data_buffer[j++] = bdev->rds_info.rds_rt[i]; | |
1362 | } else { | |
1363 | cr = i; | |
1364 | break; | |
1365 | } | |
1366 | } | |
1367 | } | |
1368 | ||
1369 | if (j <= BCM2048_MAX_RDS_RT) | |
1370 | data_buffer[j] = 0; | |
1371 | ||
1372 | for (i = 0; i < BCM2048_MAX_RDS_RT; i++) { | |
1373 | if (!bdev->rds_info.rds_rt[i]) { | |
1374 | if (cr && (i < cr)) { | |
1375 | err = -EBUSY; | |
1376 | goto unlock; | |
1377 | } | |
1378 | if (i < ce) { | |
1379 | if (cr && (i >= cr)) | |
1380 | break; | |
1381 | err = -EBUSY; | |
1382 | goto unlock; | |
1383 | } | |
1384 | } | |
1385 | } | |
1386 | ||
1387 | memcpy(data, data_buffer, sizeof(data_buffer)); | |
1388 | ||
1389 | unlock: | |
1390 | mutex_unlock(&bdev->mutex); | |
1391 | return err; | |
1392 | } | |
1393 | ||
1394 | static int bcm2048_get_rds_ps(struct bcm2048_device *bdev, char *data) | |
1395 | { | |
1396 | int err = 0, i, j = 0; | |
3ac086fb | 1397 | char data_buffer[BCM2048_MAX_RDS_PS + 1]; |
899127b6 HV |
1398 | |
1399 | mutex_lock(&bdev->mutex); | |
1400 | ||
1401 | if (!bdev->rds_info.text_len) { | |
1402 | err = -EINVAL; | |
1403 | goto unlock; | |
1404 | } | |
1405 | ||
1406 | for (i = 0; i < BCM2048_MAX_RDS_PS; i++) { | |
1407 | if (bdev->rds_info.rds_ps[i]) { | |
1408 | data_buffer[j++] = bdev->rds_info.rds_ps[i]; | |
1409 | } else { | |
1410 | if (i < (BCM2048_MAX_RDS_PS - 1)) { | |
1411 | err = -EBUSY; | |
1412 | goto unlock; | |
1413 | } | |
1414 | } | |
1415 | } | |
1416 | ||
1417 | if (j <= BCM2048_MAX_RDS_PS) | |
1418 | data_buffer[j] = 0; | |
1419 | ||
1420 | memcpy(data, data_buffer, sizeof(data_buffer)); | |
1421 | ||
1422 | unlock: | |
1423 | mutex_unlock(&bdev->mutex); | |
1424 | return err; | |
1425 | } | |
1426 | ||
1427 | static void bcm2048_parse_rds_pi(struct bcm2048_device *bdev) | |
1428 | { | |
1429 | int i, cnt = 0; | |
1430 | u16 pi; | |
1431 | ||
1432 | for (i = 0; i < bdev->fifo_size; i += BCM2048_RDS_FIFO_DUPLE_SIZE) { | |
899127b6 HV |
1433 | /* Block A match, only data without crc errors taken */ |
1434 | if (bdev->rds_info.radio_text[i] == BCM2048_RDS_BLOCK_A) { | |
3ac086fb AG |
1435 | pi = (bdev->rds_info.radio_text[i + 1] << 8) + |
1436 | bdev->rds_info.radio_text[i + 2]; | |
899127b6 HV |
1437 | |
1438 | if (!bdev->rds_info.rds_pi) { | |
1439 | bdev->rds_info.rds_pi = pi; | |
1440 | return; | |
1441 | } | |
1442 | if (pi != bdev->rds_info.rds_pi) { | |
1443 | cnt++; | |
1444 | if (cnt > 3) { | |
1445 | bdev->rds_info.rds_pi = pi; | |
1446 | cnt = 0; | |
1447 | } | |
1448 | } else { | |
1449 | cnt = 0; | |
1450 | } | |
1451 | } | |
1452 | } | |
1453 | } | |
1454 | ||
1455 | static int bcm2048_rds_block_crc(struct bcm2048_device *bdev, int i) | |
1456 | { | |
1457 | return bdev->rds_info.radio_text[i] & BCM2048_RDS_CRC_MASK; | |
1458 | } | |
1459 | ||
1460 | static void bcm2048_parse_rds_rt_block(struct bcm2048_device *bdev, int i, | |
925b6578 | 1461 | int index, int crc) |
899127b6 HV |
1462 | { |
1463 | /* Good data will overwrite poor data */ | |
1464 | if (crc) { | |
1465 | if (!bdev->rds_info.rds_rt[index]) | |
1466 | bdev->rds_info.rds_rt[index] = | |
3ac086fb AG |
1467 | bdev->rds_info.radio_text[i + 1]; |
1468 | if (!bdev->rds_info.rds_rt[index + 1]) | |
1469 | bdev->rds_info.rds_rt[index + 1] = | |
1470 | bdev->rds_info.radio_text[i + 2]; | |
899127b6 | 1471 | } else { |
3ac086fb AG |
1472 | bdev->rds_info.rds_rt[index] = |
1473 | bdev->rds_info.radio_text[i + 1]; | |
1474 | bdev->rds_info.rds_rt[index + 1] = | |
1475 | bdev->rds_info.radio_text[i + 2]; | |
899127b6 HV |
1476 | } |
1477 | } | |
1478 | ||
1479 | static int bcm2048_parse_rt_match_b(struct bcm2048_device *bdev, int i) | |
1480 | { | |
1481 | int crc, rt_id, rt_group_b, rt_ab, index = 0; | |
1482 | ||
1483 | crc = bcm2048_rds_block_crc(bdev, i); | |
1484 | ||
1485 | if (crc == BCM2048_RDS_CRC_UNRECOVARABLE) | |
1486 | return -EIO; | |
1487 | ||
1488 | if ((bdev->rds_info.radio_text[i] & BCM2048_RDS_BLOCK_MASK) == | |
925b6578 | 1489 | BCM2048_RDS_BLOCK_B) { |
3ac086fb | 1490 | rt_id = bdev->rds_info.radio_text[i + 1] & |
8126e17f | 1491 | BCM2048_RDS_BLOCK_MASK; |
3ac086fb | 1492 | rt_group_b = bdev->rds_info.radio_text[i + 1] & |
899127b6 | 1493 | BCM2048_RDS_GROUP_AB_MASK; |
3ac086fb | 1494 | rt_ab = bdev->rds_info.radio_text[i + 2] & |
899127b6 HV |
1495 | BCM2048_RDS_RT_AB_MASK; |
1496 | ||
1497 | if (rt_group_b != bdev->rds_info.rds_rt_group_b) { | |
1498 | memset(bdev->rds_info.rds_rt, 0, | |
925b6578 | 1499 | sizeof(bdev->rds_info.rds_rt)); |
899127b6 HV |
1500 | bdev->rds_info.rds_rt_group_b = rt_group_b; |
1501 | } | |
1502 | ||
1503 | if (rt_id == BCM2048_RDS_RT) { | |
1504 | /* A to B or (vice versa), means: clear screen */ | |
1505 | if (rt_ab != bdev->rds_info.rds_rt_ab) { | |
1506 | memset(bdev->rds_info.rds_rt, 0, | |
925b6578 | 1507 | sizeof(bdev->rds_info.rds_rt)); |
899127b6 HV |
1508 | bdev->rds_info.rds_rt_ab = rt_ab; |
1509 | } | |
1510 | ||
3ac086fb | 1511 | index = bdev->rds_info.radio_text[i + 2] & |
899127b6 HV |
1512 | BCM2048_RDS_RT_INDEX; |
1513 | ||
1514 | if (bdev->rds_info.rds_rt_group_b) | |
1515 | index <<= 1; | |
1516 | else | |
1517 | index <<= 2; | |
1518 | ||
1519 | return index; | |
1520 | } | |
1521 | } | |
1522 | ||
1523 | return -EIO; | |
1524 | } | |
1525 | ||
1526 | static int bcm2048_parse_rt_match_c(struct bcm2048_device *bdev, int i, | |
925b6578 | 1527 | int index) |
899127b6 HV |
1528 | { |
1529 | int crc; | |
1530 | ||
1531 | crc = bcm2048_rds_block_crc(bdev, i); | |
1532 | ||
1533 | if (crc == BCM2048_RDS_CRC_UNRECOVARABLE) | |
1534 | return 0; | |
1535 | ||
50ad58f9 S |
1536 | if ((index + 2) >= BCM2048_MAX_RDS_RT) { |
1537 | dev_err(&bdev->client->dev, | |
1538 | "Incorrect index = %d\n", index); | |
1539 | return 0; | |
1540 | } | |
899127b6 HV |
1541 | |
1542 | if ((bdev->rds_info.radio_text[i] & BCM2048_RDS_BLOCK_MASK) == | |
1543 | BCM2048_RDS_BLOCK_C) { | |
1544 | if (bdev->rds_info.rds_rt_group_b) | |
1545 | return 1; | |
1546 | bcm2048_parse_rds_rt_block(bdev, i, index, crc); | |
1547 | return 1; | |
1548 | } | |
1549 | ||
1550 | return 0; | |
1551 | } | |
1552 | ||
1553 | static void bcm2048_parse_rt_match_d(struct bcm2048_device *bdev, int i, | |
925b6578 | 1554 | int index) |
899127b6 HV |
1555 | { |
1556 | int crc; | |
1557 | ||
1558 | crc = bcm2048_rds_block_crc(bdev, i); | |
1559 | ||
1560 | if (crc == BCM2048_RDS_CRC_UNRECOVARABLE) | |
1561 | return; | |
1562 | ||
50ad58f9 S |
1563 | if ((index + 4) >= BCM2048_MAX_RDS_RT) { |
1564 | dev_err(&bdev->client->dev, | |
1565 | "Incorrect index = %d\n", index); | |
1566 | return; | |
1567 | } | |
899127b6 HV |
1568 | |
1569 | if ((bdev->rds_info.radio_text[i] & BCM2048_RDS_BLOCK_MASK) == | |
925b6578 | 1570 | BCM2048_RDS_BLOCK_D) |
3ac086fb | 1571 | bcm2048_parse_rds_rt_block(bdev, i, index + 2, crc); |
899127b6 HV |
1572 | } |
1573 | ||
b6cca54f | 1574 | static void bcm2048_parse_rds_rt(struct bcm2048_device *bdev) |
899127b6 HV |
1575 | { |
1576 | int i, index = 0, crc, match_b = 0, match_c = 0, match_d = 0; | |
1577 | ||
1578 | for (i = 0; i < bdev->fifo_size; i += BCM2048_RDS_FIFO_DUPLE_SIZE) { | |
899127b6 HV |
1579 | if (match_b) { |
1580 | match_b = 0; | |
1581 | index = bcm2048_parse_rt_match_b(bdev, i); | |
1582 | if (index >= 0 && index <= (BCM2048_MAX_RDS_RT - 5)) | |
1583 | match_c = 1; | |
1584 | continue; | |
1585 | } else if (match_c) { | |
1586 | match_c = 0; | |
1587 | if (bcm2048_parse_rt_match_c(bdev, i, index)) | |
1588 | match_d = 1; | |
1589 | continue; | |
1590 | } else if (match_d) { | |
1591 | match_d = 0; | |
1592 | bcm2048_parse_rt_match_d(bdev, i, index); | |
1593 | continue; | |
1594 | } | |
1595 | ||
1596 | /* Skip erroneous blocks due to messed up A block altogether */ | |
925b6578 AG |
1597 | if ((bdev->rds_info.radio_text[i] & BCM2048_RDS_BLOCK_MASK) == |
1598 | BCM2048_RDS_BLOCK_A) { | |
899127b6 HV |
1599 | crc = bcm2048_rds_block_crc(bdev, i); |
1600 | if (crc == BCM2048_RDS_CRC_UNRECOVARABLE) | |
1601 | continue; | |
3066bc05 | 1602 | /* Synchronize to a good RDS PI */ |
925b6578 AG |
1603 | if (((bdev->rds_info.radio_text[i + 1] << 8) + |
1604 | bdev->rds_info.radio_text[i + 2]) == | |
1605 | bdev->rds_info.rds_pi) | |
1606 | match_b = 1; | |
899127b6 HV |
1607 | } |
1608 | } | |
899127b6 HV |
1609 | } |
1610 | ||
1611 | static void bcm2048_parse_rds_ps_block(struct bcm2048_device *bdev, int i, | |
925b6578 | 1612 | int index, int crc) |
899127b6 HV |
1613 | { |
1614 | /* Good data will overwrite poor data */ | |
1615 | if (crc) { | |
1616 | if (!bdev->rds_info.rds_ps[index]) | |
1617 | bdev->rds_info.rds_ps[index] = | |
3ac086fb AG |
1618 | bdev->rds_info.radio_text[i + 1]; |
1619 | if (!bdev->rds_info.rds_ps[index + 1]) | |
1620 | bdev->rds_info.rds_ps[index + 1] = | |
1621 | bdev->rds_info.radio_text[i + 2]; | |
899127b6 | 1622 | } else { |
3ac086fb AG |
1623 | bdev->rds_info.rds_ps[index] = |
1624 | bdev->rds_info.radio_text[i + 1]; | |
1625 | bdev->rds_info.rds_ps[index + 1] = | |
1626 | bdev->rds_info.radio_text[i + 2]; | |
899127b6 HV |
1627 | } |
1628 | } | |
1629 | ||
1630 | static int bcm2048_parse_ps_match_c(struct bcm2048_device *bdev, int i, | |
925b6578 | 1631 | int index) |
899127b6 HV |
1632 | { |
1633 | int crc; | |
1634 | ||
1635 | crc = bcm2048_rds_block_crc(bdev, i); | |
1636 | ||
1637 | if (crc == BCM2048_RDS_CRC_UNRECOVARABLE) | |
1638 | return 0; | |
1639 | ||
1640 | if ((bdev->rds_info.radio_text[i] & BCM2048_RDS_BLOCK_MASK) == | |
925b6578 | 1641 | BCM2048_RDS_BLOCK_C) |
899127b6 HV |
1642 | return 1; |
1643 | ||
1644 | return 0; | |
1645 | } | |
1646 | ||
1647 | static void bcm2048_parse_ps_match_d(struct bcm2048_device *bdev, int i, | |
925b6578 | 1648 | int index) |
899127b6 HV |
1649 | { |
1650 | int crc; | |
1651 | ||
1652 | crc = bcm2048_rds_block_crc(bdev, i); | |
1653 | ||
1654 | if (crc == BCM2048_RDS_CRC_UNRECOVARABLE) | |
1655 | return; | |
1656 | ||
1657 | if ((bdev->rds_info.radio_text[i] & BCM2048_RDS_BLOCK_MASK) == | |
925b6578 | 1658 | BCM2048_RDS_BLOCK_D) |
899127b6 HV |
1659 | bcm2048_parse_rds_ps_block(bdev, i, index, crc); |
1660 | } | |
1661 | ||
1662 | static int bcm2048_parse_ps_match_b(struct bcm2048_device *bdev, int i) | |
1663 | { | |
1664 | int crc, index, ps_id, ps_group; | |
1665 | ||
1666 | crc = bcm2048_rds_block_crc(bdev, i); | |
1667 | ||
1668 | if (crc == BCM2048_RDS_CRC_UNRECOVARABLE) | |
1669 | return -EIO; | |
1670 | ||
1671 | /* Block B Radio PS match */ | |
1672 | if ((bdev->rds_info.radio_text[i] & BCM2048_RDS_BLOCK_MASK) == | |
925b6578 | 1673 | BCM2048_RDS_BLOCK_B) { |
3ac086fb | 1674 | ps_id = bdev->rds_info.radio_text[i + 1] & |
899127b6 | 1675 | BCM2048_RDS_BLOCK_MASK; |
3ac086fb | 1676 | ps_group = bdev->rds_info.radio_text[i + 1] & |
899127b6 HV |
1677 | BCM2048_RDS_GROUP_AB_MASK; |
1678 | ||
1679 | /* | |
1680 | * Poor RSSI will lead to RDS data corruption | |
1681 | * So using 3 (same) sequential values to justify major changes | |
1682 | */ | |
1683 | if (ps_group != bdev->rds_info.rds_ps_group) { | |
1684 | if (crc == BCM2048_RDS_CRC_NONE) { | |
1685 | bdev->rds_info.rds_ps_group_cnt++; | |
1686 | if (bdev->rds_info.rds_ps_group_cnt > 2) { | |
1687 | bdev->rds_info.rds_ps_group = ps_group; | |
1688 | bdev->rds_info.rds_ps_group_cnt = 0; | |
1689 | dev_err(&bdev->client->dev, | |
1690 | "RDS PS Group change!\n"); | |
1691 | } else { | |
1692 | return -EIO; | |
1693 | } | |
1694 | } else { | |
1695 | bdev->rds_info.rds_ps_group_cnt = 0; | |
1696 | } | |
1697 | } | |
1698 | ||
1699 | if (ps_id == BCM2048_RDS_PS) { | |
3ac086fb | 1700 | index = bdev->rds_info.radio_text[i + 2] & |
899127b6 HV |
1701 | BCM2048_RDS_PS_INDEX; |
1702 | index <<= 1; | |
1703 | return index; | |
1704 | } | |
1705 | } | |
1706 | ||
1707 | return -EIO; | |
1708 | } | |
1709 | ||
1710 | static void bcm2048_parse_rds_ps(struct bcm2048_device *bdev) | |
1711 | { | |
1712 | int i, index = 0, crc, match_b = 0, match_c = 0, match_d = 0; | |
1713 | ||
1714 | for (i = 0; i < bdev->fifo_size; i += BCM2048_RDS_FIFO_DUPLE_SIZE) { | |
899127b6 HV |
1715 | if (match_b) { |
1716 | match_b = 0; | |
1717 | index = bcm2048_parse_ps_match_b(bdev, i); | |
1718 | if (index >= 0 && index < (BCM2048_MAX_RDS_PS - 1)) | |
1719 | match_c = 1; | |
1720 | continue; | |
1721 | } else if (match_c) { | |
1722 | match_c = 0; | |
1723 | if (bcm2048_parse_ps_match_c(bdev, i, index)) | |
1724 | match_d = 1; | |
1725 | continue; | |
1726 | } else if (match_d) { | |
1727 | match_d = 0; | |
1728 | bcm2048_parse_ps_match_d(bdev, i, index); | |
1729 | continue; | |
1730 | } | |
1731 | ||
1732 | /* Skip erroneous blocks due to messed up A block altogether */ | |
925b6578 AG |
1733 | if ((bdev->rds_info.radio_text[i] & BCM2048_RDS_BLOCK_MASK) == |
1734 | BCM2048_RDS_BLOCK_A) { | |
899127b6 HV |
1735 | crc = bcm2048_rds_block_crc(bdev, i); |
1736 | if (crc == BCM2048_RDS_CRC_UNRECOVARABLE) | |
1737 | continue; | |
3066bc05 | 1738 | /* Synchronize to a good RDS PI */ |
925b6578 AG |
1739 | if (((bdev->rds_info.radio_text[i + 1] << 8) + |
1740 | bdev->rds_info.radio_text[i + 2]) == | |
1741 | bdev->rds_info.rds_pi) | |
1742 | match_b = 1; | |
899127b6 HV |
1743 | } |
1744 | } | |
1745 | } | |
1746 | ||
1747 | static void bcm2048_rds_fifo_receive(struct bcm2048_device *bdev) | |
1748 | { | |
1749 | int err; | |
1750 | ||
1751 | mutex_lock(&bdev->mutex); | |
1752 | ||
1753 | err = bcm2048_recv_duples(bdev, BCM2048_I2C_RDS_DATA, | |
925b6578 | 1754 | bdev->rds_info.radio_text, bdev->fifo_size); |
899127b6 HV |
1755 | if (err != 2) { |
1756 | dev_err(&bdev->client->dev, "RDS Read problem\n"); | |
66c5e592 | 1757 | mutex_unlock(&bdev->mutex); |
899127b6 HV |
1758 | return; |
1759 | } | |
1760 | ||
1761 | bdev->rds_info.text_len = bdev->fifo_size; | |
1762 | ||
1763 | bcm2048_parse_rds_pi(bdev); | |
1764 | bcm2048_parse_rds_rt(bdev); | |
1765 | bcm2048_parse_rds_ps(bdev); | |
1766 | ||
1767 | mutex_unlock(&bdev->mutex); | |
1768 | ||
1769 | wake_up_interruptible(&bdev->read_queue); | |
1770 | } | |
1771 | ||
1772 | static int bcm2048_get_rds_data(struct bcm2048_device *bdev, char *data) | |
1773 | { | |
1774 | int err = 0, i, p = 0; | |
1775 | char *data_buffer; | |
1776 | ||
1777 | mutex_lock(&bdev->mutex); | |
1778 | ||
1779 | if (!bdev->rds_info.text_len) { | |
1780 | err = -EINVAL; | |
1781 | goto unlock; | |
1782 | } | |
1783 | ||
5869066a | 1784 | data_buffer = kcalloc(BCM2048_MAX_RDS_RADIO_TEXT, 5, GFP_KERNEL); |
899127b6 HV |
1785 | if (!data_buffer) { |
1786 | err = -ENOMEM; | |
1787 | goto unlock; | |
1788 | } | |
1789 | ||
1790 | for (i = 0; i < bdev->rds_info.text_len; i++) { | |
3ac086fb | 1791 | p += sprintf(data_buffer + p, "%x ", |
925b6578 | 1792 | bdev->rds_info.radio_text[i]); |
899127b6 HV |
1793 | } |
1794 | ||
1795 | memcpy(data, data_buffer, p); | |
1796 | kfree(data_buffer); | |
1797 | ||
1798 | unlock: | |
1799 | mutex_unlock(&bdev->mutex); | |
1800 | return err; | |
1801 | } | |
1802 | ||
1803 | /* | |
1804 | * BCM2048 default initialization sequence | |
1805 | */ | |
1806 | static int bcm2048_init(struct bcm2048_device *bdev) | |
1807 | { | |
1808 | int err; | |
1809 | ||
1810 | err = bcm2048_set_power_state(bdev, BCM2048_POWER_ON); | |
1811 | if (err < 0) | |
1812 | goto exit; | |
1813 | ||
1814 | err = bcm2048_set_audio_route(bdev, BCM2048_AUDIO_ROUTE_DAC); | |
1815 | if (err < 0) | |
1816 | goto exit; | |
1817 | ||
1818 | err = bcm2048_set_dac_output(bdev, BCM2048_DAC_OUTPUT_LEFT | | |
925b6578 | 1819 | BCM2048_DAC_OUTPUT_RIGHT); |
899127b6 HV |
1820 | |
1821 | exit: | |
1822 | return err; | |
1823 | } | |
1824 | ||
1825 | /* | |
1826 | * BCM2048 default deinitialization sequence | |
1827 | */ | |
1828 | static int bcm2048_deinit(struct bcm2048_device *bdev) | |
1829 | { | |
1830 | int err; | |
1831 | ||
1832 | err = bcm2048_set_audio_route(bdev, 0); | |
1833 | if (err < 0) | |
58f31812 | 1834 | return err; |
899127b6 HV |
1835 | |
1836 | err = bcm2048_set_dac_output(bdev, 0); | |
1837 | if (err < 0) | |
58f31812 | 1838 | return err; |
899127b6 | 1839 | |
4b9fd698 | 1840 | return bcm2048_set_power_state(bdev, BCM2048_POWER_OFF); |
899127b6 HV |
1841 | } |
1842 | ||
1843 | /* | |
1844 | * BCM2048 probe sequence | |
1845 | */ | |
1846 | static int bcm2048_probe(struct bcm2048_device *bdev) | |
1847 | { | |
1848 | int err; | |
1849 | ||
1850 | err = bcm2048_set_power_state(bdev, BCM2048_POWER_ON); | |
1851 | if (err < 0) | |
1852 | goto unlock; | |
1853 | ||
1854 | err = bcm2048_checkrev(bdev); | |
1855 | if (err < 0) | |
1856 | goto unlock; | |
1857 | ||
1858 | err = bcm2048_set_mute(bdev, BCM2048_DEFAULT_MUTE); | |
1859 | if (err < 0) | |
1860 | goto unlock; | |
1861 | ||
1862 | err = bcm2048_set_region(bdev, BCM2048_DEFAULT_REGION); | |
1863 | if (err < 0) | |
1864 | goto unlock; | |
1865 | ||
1866 | err = bcm2048_set_fm_search_rssi_threshold(bdev, | |
1867 | BCM2048_DEFAULT_RSSI_THRESHOLD); | |
1868 | if (err < 0) | |
1869 | goto unlock; | |
1870 | ||
1871 | err = bcm2048_set_fm_automatic_stereo_mono(bdev, BCM2048_ITEM_ENABLED); | |
1872 | if (err < 0) | |
1873 | goto unlock; | |
1874 | ||
1875 | err = bcm2048_get_rds_wline(bdev); | |
1876 | if (err < BCM2048_DEFAULT_RDS_WLINE) | |
1877 | err = bcm2048_set_rds_wline(bdev, BCM2048_DEFAULT_RDS_WLINE); | |
1878 | if (err < 0) | |
1879 | goto unlock; | |
1880 | ||
1881 | err = bcm2048_set_power_state(bdev, BCM2048_POWER_OFF); | |
1882 | ||
1883 | init_waitqueue_head(&bdev->read_queue); | |
1884 | bdev->rds_data_available = 0; | |
1885 | bdev->rd_index = 0; | |
1886 | bdev->users = 0; | |
1887 | ||
1888 | unlock: | |
1889 | return err; | |
1890 | } | |
1891 | ||
1892 | /* | |
1893 | * BCM2048 workqueue handler | |
1894 | */ | |
1895 | static void bcm2048_work(struct work_struct *work) | |
1896 | { | |
1897 | struct bcm2048_device *bdev; | |
a1f8c0cf | 1898 | u8 flag_lsb = 0, flag_msb = 0, flags; |
899127b6 HV |
1899 | |
1900 | bdev = container_of(work, struct bcm2048_device, work); | |
1901 | bcm2048_recv_command(bdev, BCM2048_I2C_FM_RDS_FLAG0, &flag_lsb); | |
1902 | bcm2048_recv_command(bdev, BCM2048_I2C_FM_RDS_FLAG1, &flag_msb); | |
1903 | ||
1904 | if (flag_lsb & (BCM2048_FM_FLAG_SEARCH_TUNE_FINISHED | | |
1905 | BCM2048_FM_FLAG_SEARCH_TUNE_FAIL)) { | |
899127b6 HV |
1906 | if (flag_lsb & BCM2048_FM_FLAG_SEARCH_TUNE_FAIL) |
1907 | bdev->scan_state = BCM2048_SCAN_FAIL; | |
1908 | else | |
1909 | bdev->scan_state = BCM2048_SCAN_OK; | |
1910 | ||
1911 | complete(&bdev->compl); | |
1912 | } | |
1913 | ||
1914 | if (flag_msb & BCM2048_RDS_FLAG_FIFO_WLINE) { | |
1915 | bcm2048_rds_fifo_receive(bdev); | |
1916 | if (bdev->rds_state) { | |
1917 | flags = BCM2048_RDS_FLAG_FIFO_WLINE; | |
1918 | bcm2048_send_command(bdev, BCM2048_I2C_FM_RDS_MASK1, | |
925b6578 | 1919 | flags); |
899127b6 HV |
1920 | } |
1921 | bdev->rds_data_available = 1; | |
1922 | bdev->rd_index = 0; /* new data, new start */ | |
1923 | } | |
1924 | } | |
1925 | ||
1926 | /* | |
1927 | * BCM2048 interrupt handler | |
1928 | */ | |
1929 | static irqreturn_t bcm2048_handler(int irq, void *dev) | |
1930 | { | |
1931 | struct bcm2048_device *bdev = dev; | |
1932 | ||
1933 | dev_dbg(&bdev->client->dev, "IRQ called, queuing work\n"); | |
1934 | if (bdev->power_state) | |
1935 | schedule_work(&bdev->work); | |
1936 | ||
1937 | return IRQ_HANDLED; | |
1938 | } | |
1939 | ||
1940 | /* | |
1941 | * BCM2048 sysfs interface definitions | |
1942 | */ | |
1943 | #define property_write(prop, type, mask, check) \ | |
1944 | static ssize_t bcm2048_##prop##_write(struct device *dev, \ | |
1945 | struct device_attribute *attr, \ | |
1946 | const char *buf, \ | |
1947 | size_t count) \ | |
1948 | { \ | |
1949 | struct bcm2048_device *bdev = dev_get_drvdata(dev); \ | |
1950 | type value; \ | |
1951 | int err; \ | |
1952 | \ | |
1953 | if (!bdev) \ | |
1954 | return -ENODEV; \ | |
1955 | \ | |
b317d0f5 LH |
1956 | if (sscanf(buf, mask, &value) != 1) \ |
1957 | return -EINVAL; \ | |
899127b6 HV |
1958 | \ |
1959 | if (check) \ | |
1960 | return -EDOM; \ | |
1961 | \ | |
1962 | err = bcm2048_set_##prop(bdev, value); \ | |
1963 | \ | |
1964 | return err < 0 ? err : count; \ | |
1965 | } | |
1966 | ||
6e047ac9 | 1967 | #define property_read(prop, mask) \ |
899127b6 HV |
1968 | static ssize_t bcm2048_##prop##_read(struct device *dev, \ |
1969 | struct device_attribute *attr, \ | |
1970 | char *buf) \ | |
1971 | { \ | |
1972 | struct bcm2048_device *bdev = dev_get_drvdata(dev); \ | |
356ba021 | 1973 | int value; \ |
899127b6 HV |
1974 | \ |
1975 | if (!bdev) \ | |
1976 | return -ENODEV; \ | |
1977 | \ | |
1978 | value = bcm2048_get_##prop(bdev); \ | |
1979 | \ | |
1980 | if (value >= 0) \ | |
1981 | value = sprintf(buf, mask "\n", value); \ | |
1982 | \ | |
1983 | return value; \ | |
1984 | } | |
1985 | ||
1986 | #define property_signed_read(prop, size, mask) \ | |
1987 | static ssize_t bcm2048_##prop##_read(struct device *dev, \ | |
1988 | struct device_attribute *attr, \ | |
1989 | char *buf) \ | |
1990 | { \ | |
1991 | struct bcm2048_device *bdev = dev_get_drvdata(dev); \ | |
1992 | size value; \ | |
1993 | \ | |
1994 | if (!bdev) \ | |
1995 | return -ENODEV; \ | |
1996 | \ | |
1997 | value = bcm2048_get_##prop(bdev); \ | |
1998 | \ | |
4b9fd698 | 1999 | return sprintf(buf, mask "\n", value); \ |
899127b6 HV |
2000 | } |
2001 | ||
6e047ac9 BR |
2002 | #define DEFINE_SYSFS_PROPERTY(prop, prop_type, mask, check) \ |
2003 | property_write(prop, prop_type, mask, check) \ | |
2004 | property_read(prop, mask) \ | |
899127b6 HV |
2005 | |
2006 | #define property_str_read(prop, size) \ | |
2007 | static ssize_t bcm2048_##prop##_read(struct device *dev, \ | |
2008 | struct device_attribute *attr, \ | |
2009 | char *buf) \ | |
2010 | { \ | |
2011 | struct bcm2048_device *bdev = dev_get_drvdata(dev); \ | |
2012 | int count; \ | |
2013 | u8 *out; \ | |
2014 | \ | |
2015 | if (!bdev) \ | |
2016 | return -ENODEV; \ | |
2017 | \ | |
eef04f82 | 2018 | out = kzalloc((size) + 1, GFP_KERNEL); \ |
899127b6 HV |
2019 | if (!out) \ |
2020 | return -ENOMEM; \ | |
2021 | \ | |
2022 | bcm2048_get_##prop(bdev, out); \ | |
2023 | count = sprintf(buf, "%s\n", out); \ | |
2024 | \ | |
2025 | kfree(out); \ | |
2026 | \ | |
2027 | return count; \ | |
2028 | } | |
2029 | ||
6e047ac9 BR |
2030 | DEFINE_SYSFS_PROPERTY(power_state, unsigned int, "%u", 0) |
2031 | DEFINE_SYSFS_PROPERTY(mute, unsigned int, "%u", 0) | |
2032 | DEFINE_SYSFS_PROPERTY(audio_route, unsigned int, "%u", 0) | |
2033 | DEFINE_SYSFS_PROPERTY(dac_output, unsigned int, "%u", 0) | |
2034 | ||
2035 | DEFINE_SYSFS_PROPERTY(fm_hi_lo_injection, unsigned int, "%u", 0) | |
2036 | DEFINE_SYSFS_PROPERTY(fm_frequency, unsigned int, "%u", 0) | |
2037 | DEFINE_SYSFS_PROPERTY(fm_af_frequency, unsigned int, "%u", 0) | |
2038 | DEFINE_SYSFS_PROPERTY(fm_deemphasis, unsigned int, "%u", 0) | |
2039 | DEFINE_SYSFS_PROPERTY(fm_rds_mask, unsigned int, "%u", 0) | |
2040 | DEFINE_SYSFS_PROPERTY(fm_best_tune_mode, unsigned int, "%u", 0) | |
2041 | DEFINE_SYSFS_PROPERTY(fm_search_rssi_threshold, unsigned int, "%u", 0) | |
2042 | DEFINE_SYSFS_PROPERTY(fm_search_mode_direction, unsigned int, "%u", 0) | |
2043 | DEFINE_SYSFS_PROPERTY(fm_search_tune_mode, unsigned int, "%u", value > 3) | |
2044 | ||
2045 | DEFINE_SYSFS_PROPERTY(rds, unsigned int, "%u", 0) | |
2046 | DEFINE_SYSFS_PROPERTY(rds_b_block_mask, unsigned int, "%u", 0) | |
2047 | DEFINE_SYSFS_PROPERTY(rds_b_block_match, unsigned int, "%u", 0) | |
2048 | DEFINE_SYSFS_PROPERTY(rds_pi_mask, unsigned int, "%u", 0) | |
2049 | DEFINE_SYSFS_PROPERTY(rds_pi_match, unsigned int, "%u", 0) | |
2050 | DEFINE_SYSFS_PROPERTY(rds_wline, unsigned int, "%u", 0) | |
2051 | property_read(rds_pi, "%x") | |
899127b6 HV |
2052 | property_str_read(rds_rt, (BCM2048_MAX_RDS_RT + 1)) |
2053 | property_str_read(rds_ps, (BCM2048_MAX_RDS_PS + 1)) | |
2054 | ||
6e047ac9 | 2055 | property_read(fm_rds_flags, "%u") |
3ac086fb | 2056 | property_str_read(rds_data, BCM2048_MAX_RDS_RADIO_TEXT * 5) |
899127b6 | 2057 | |
6e047ac9 BR |
2058 | property_read(region_bottom_frequency, "%u") |
2059 | property_read(region_top_frequency, "%u") | |
899127b6 HV |
2060 | property_signed_read(fm_carrier_error, int, "%d") |
2061 | property_signed_read(fm_rssi, int, "%d") | |
6e047ac9 | 2062 | DEFINE_SYSFS_PROPERTY(region, unsigned int, "%u", 0) |
899127b6 HV |
2063 | |
2064 | static struct device_attribute attrs[] = { | |
24dc974d | 2065 | __ATTR(power_state, 0644, bcm2048_power_state_read, |
925b6578 | 2066 | bcm2048_power_state_write), |
24dc974d | 2067 | __ATTR(mute, 0644, bcm2048_mute_read, |
925b6578 | 2068 | bcm2048_mute_write), |
24dc974d | 2069 | __ATTR(audio_route, 0644, bcm2048_audio_route_read, |
925b6578 | 2070 | bcm2048_audio_route_write), |
24dc974d | 2071 | __ATTR(dac_output, 0644, bcm2048_dac_output_read, |
925b6578 | 2072 | bcm2048_dac_output_write), |
24dc974d | 2073 | __ATTR(fm_hi_lo_injection, 0644, |
925b6578 AG |
2074 | bcm2048_fm_hi_lo_injection_read, |
2075 | bcm2048_fm_hi_lo_injection_write), | |
24dc974d | 2076 | __ATTR(fm_frequency, 0644, bcm2048_fm_frequency_read, |
925b6578 | 2077 | bcm2048_fm_frequency_write), |
24dc974d | 2078 | __ATTR(fm_af_frequency, 0644, |
925b6578 AG |
2079 | bcm2048_fm_af_frequency_read, |
2080 | bcm2048_fm_af_frequency_write), | |
24dc974d | 2081 | __ATTR(fm_deemphasis, 0644, bcm2048_fm_deemphasis_read, |
925b6578 | 2082 | bcm2048_fm_deemphasis_write), |
24dc974d | 2083 | __ATTR(fm_rds_mask, 0644, bcm2048_fm_rds_mask_read, |
925b6578 | 2084 | bcm2048_fm_rds_mask_write), |
24dc974d | 2085 | __ATTR(fm_best_tune_mode, 0644, |
925b6578 AG |
2086 | bcm2048_fm_best_tune_mode_read, |
2087 | bcm2048_fm_best_tune_mode_write), | |
24dc974d | 2088 | __ATTR(fm_search_rssi_threshold, 0644, |
925b6578 AG |
2089 | bcm2048_fm_search_rssi_threshold_read, |
2090 | bcm2048_fm_search_rssi_threshold_write), | |
24dc974d | 2091 | __ATTR(fm_search_mode_direction, 0644, |
925b6578 AG |
2092 | bcm2048_fm_search_mode_direction_read, |
2093 | bcm2048_fm_search_mode_direction_write), | |
24dc974d | 2094 | __ATTR(fm_search_tune_mode, 0644, |
925b6578 AG |
2095 | bcm2048_fm_search_tune_mode_read, |
2096 | bcm2048_fm_search_tune_mode_write), | |
24dc974d | 2097 | __ATTR(rds, 0644, bcm2048_rds_read, |
925b6578 | 2098 | bcm2048_rds_write), |
24dc974d | 2099 | __ATTR(rds_b_block_mask, 0644, |
925b6578 AG |
2100 | bcm2048_rds_b_block_mask_read, |
2101 | bcm2048_rds_b_block_mask_write), | |
24dc974d | 2102 | __ATTR(rds_b_block_match, 0644, |
925b6578 AG |
2103 | bcm2048_rds_b_block_match_read, |
2104 | bcm2048_rds_b_block_match_write), | |
24dc974d | 2105 | __ATTR(rds_pi_mask, 0644, bcm2048_rds_pi_mask_read, |
925b6578 | 2106 | bcm2048_rds_pi_mask_write), |
24dc974d | 2107 | __ATTR(rds_pi_match, 0644, bcm2048_rds_pi_match_read, |
925b6578 | 2108 | bcm2048_rds_pi_match_write), |
24dc974d | 2109 | __ATTR(rds_wline, 0644, bcm2048_rds_wline_read, |
925b6578 | 2110 | bcm2048_rds_wline_write), |
24dc974d JBA |
2111 | __ATTR(rds_pi, 0444, bcm2048_rds_pi_read, NULL), |
2112 | __ATTR(rds_rt, 0444, bcm2048_rds_rt_read, NULL), | |
2113 | __ATTR(rds_ps, 0444, bcm2048_rds_ps_read, NULL), | |
2114 | __ATTR(fm_rds_flags, 0444, bcm2048_fm_rds_flags_read, NULL), | |
2115 | __ATTR(region_bottom_frequency, 0444, | |
925b6578 | 2116 | bcm2048_region_bottom_frequency_read, NULL), |
24dc974d | 2117 | __ATTR(region_top_frequency, 0444, |
925b6578 | 2118 | bcm2048_region_top_frequency_read, NULL), |
24dc974d | 2119 | __ATTR(fm_carrier_error, 0444, |
925b6578 | 2120 | bcm2048_fm_carrier_error_read, NULL), |
24dc974d | 2121 | __ATTR(fm_rssi, 0444, |
925b6578 | 2122 | bcm2048_fm_rssi_read, NULL), |
24dc974d | 2123 | __ATTR(region, 0644, bcm2048_region_read, |
925b6578 | 2124 | bcm2048_region_write), |
24dc974d | 2125 | __ATTR(rds_data, 0444, bcm2048_rds_data_read, NULL), |
899127b6 HV |
2126 | }; |
2127 | ||
2128 | static int bcm2048_sysfs_unregister_properties(struct bcm2048_device *bdev, | |
925b6578 | 2129 | int size) |
899127b6 HV |
2130 | { |
2131 | int i; | |
2132 | ||
2133 | for (i = 0; i < size; i++) | |
2134 | device_remove_file(&bdev->client->dev, &attrs[i]); | |
2135 | ||
2136 | return 0; | |
2137 | } | |
2138 | ||
2139 | static int bcm2048_sysfs_register_properties(struct bcm2048_device *bdev) | |
2140 | { | |
2141 | int err = 0; | |
2142 | int i; | |
2143 | ||
2144 | for (i = 0; i < ARRAY_SIZE(attrs); i++) { | |
2145 | if (device_create_file(&bdev->client->dev, &attrs[i]) != 0) { | |
2146 | dev_err(&bdev->client->dev, | |
925b6578 | 2147 | "could not register sysfs entry\n"); |
899127b6 HV |
2148 | err = -EBUSY; |
2149 | bcm2048_sysfs_unregister_properties(bdev, i); | |
2150 | break; | |
2151 | } | |
2152 | } | |
2153 | ||
2154 | return err; | |
2155 | } | |
2156 | ||
899127b6 HV |
2157 | static int bcm2048_fops_open(struct file *file) |
2158 | { | |
2159 | struct bcm2048_device *bdev = video_drvdata(file); | |
2160 | ||
2161 | bdev->users++; | |
2162 | bdev->rd_index = 0; | |
2163 | bdev->rds_data_available = 0; | |
2164 | ||
2165 | return 0; | |
2166 | } | |
2167 | ||
2168 | static int bcm2048_fops_release(struct file *file) | |
2169 | { | |
2170 | struct bcm2048_device *bdev = video_drvdata(file); | |
2171 | ||
2172 | bdev->users--; | |
2173 | ||
2174 | return 0; | |
2175 | } | |
2176 | ||
c23e0cb8 | 2177 | static __poll_t bcm2048_fops_poll(struct file *file, |
925b6578 | 2178 | struct poll_table_struct *pts) |
899127b6 HV |
2179 | { |
2180 | struct bcm2048_device *bdev = video_drvdata(file); | |
c23e0cb8 | 2181 | __poll_t retval = 0; |
899127b6 HV |
2182 | |
2183 | poll_wait(file, &bdev->read_queue, pts); | |
2184 | ||
2185 | if (bdev->rds_data_available) | |
a9a08845 | 2186 | retval = EPOLLIN | EPOLLRDNORM; |
899127b6 HV |
2187 | |
2188 | return retval; | |
2189 | } | |
2190 | ||
2191 | static ssize_t bcm2048_fops_read(struct file *file, char __user *buf, | |
925b6578 | 2192 | size_t count, loff_t *ppos) |
899127b6 HV |
2193 | { |
2194 | struct bcm2048_device *bdev = video_drvdata(file); | |
2195 | int i; | |
2196 | int retval = 0; | |
2197 | ||
2198 | /* we return at least 3 bytes, one block */ | |
2199 | count = (count / 3) * 3; /* only multiples of 3 */ | |
2200 | if (count < 3) | |
2201 | return -ENOBUFS; | |
2202 | ||
2203 | while (!bdev->rds_data_available) { | |
2204 | if (file->f_flags & O_NONBLOCK) { | |
2205 | retval = -EWOULDBLOCK; | |
2206 | goto done; | |
2207 | } | |
2208 | /* interruptible_sleep_on(&bdev->read_queue); */ | |
2209 | if (wait_event_interruptible(bdev->read_queue, | |
3194e858 | 2210 | bdev->rds_data_available) < 0) { |
899127b6 HV |
2211 | retval = -EINTR; |
2212 | goto done; | |
2213 | } | |
2214 | } | |
2215 | ||
2216 | mutex_lock(&bdev->mutex); | |
2217 | /* copy data to userspace */ | |
2218 | i = bdev->fifo_size - bdev->rd_index; | |
2219 | if (count > i) | |
2220 | count = (i / 3) * 3; | |
2221 | ||
2222 | i = 0; | |
2223 | while (i < count) { | |
2224 | unsigned char tmpbuf[3]; | |
b317d0f5 | 2225 | |
3ac086fb AG |
2226 | tmpbuf[i] = bdev->rds_info.radio_text[bdev->rd_index + i + 2]; |
2227 | tmpbuf[i + 1] = | |
2228 | bdev->rds_info.radio_text[bdev->rd_index + i + 1]; | |
2229 | tmpbuf[i + 2] = | |
2230 | (bdev->rds_info.radio_text[bdev->rd_index + i] & | |
2231 | 0xf0) >> 4; | |
2232 | if ((bdev->rds_info.radio_text[bdev->rd_index + i] & | |
925b6578 | 2233 | BCM2048_RDS_CRC_MASK) == BCM2048_RDS_CRC_UNRECOVARABLE) |
3ac086fb AG |
2234 | tmpbuf[i + 2] |= 0x80; |
2235 | if (copy_to_user(buf + i, tmpbuf, 3)) { | |
899127b6 HV |
2236 | retval = -EFAULT; |
2237 | break; | |
12d1ee1f | 2238 | } |
899127b6 HV |
2239 | i += 3; |
2240 | } | |
2241 | ||
2242 | bdev->rd_index += i; | |
2243 | if (bdev->rd_index >= bdev->fifo_size) | |
2244 | bdev->rds_data_available = 0; | |
2245 | ||
2246 | mutex_unlock(&bdev->mutex); | |
2247 | if (retval == 0) | |
2248 | retval = i; | |
2249 | ||
2250 | done: | |
2251 | return retval; | |
2252 | } | |
2253 | ||
2254 | /* | |
2255 | * bcm2048_fops - file operations interface | |
2256 | */ | |
2257 | static const struct v4l2_file_operations bcm2048_fops = { | |
2258 | .owner = THIS_MODULE, | |
2e1328dd | 2259 | .unlocked_ioctl = video_ioctl2, |
899127b6 HV |
2260 | /* for RDS read support */ |
2261 | .open = bcm2048_fops_open, | |
2262 | .release = bcm2048_fops_release, | |
2263 | .read = bcm2048_fops_read, | |
2264 | .poll = bcm2048_fops_poll | |
2265 | }; | |
2266 | ||
2267 | /* | |
2268 | * Video4Linux Interface | |
2269 | */ | |
2270 | static struct v4l2_queryctrl bcm2048_v4l2_queryctrl[] = { | |
2271 | { | |
2272 | .id = V4L2_CID_AUDIO_VOLUME, | |
2273 | .flags = V4L2_CTRL_FLAG_DISABLED, | |
2274 | }, | |
2275 | { | |
2276 | .id = V4L2_CID_AUDIO_BALANCE, | |
2277 | .flags = V4L2_CTRL_FLAG_DISABLED, | |
2278 | }, | |
2279 | { | |
2280 | .id = V4L2_CID_AUDIO_BASS, | |
2281 | .flags = V4L2_CTRL_FLAG_DISABLED, | |
2282 | }, | |
2283 | { | |
2284 | .id = V4L2_CID_AUDIO_TREBLE, | |
2285 | .flags = V4L2_CTRL_FLAG_DISABLED, | |
2286 | }, | |
2287 | { | |
2288 | .id = V4L2_CID_AUDIO_MUTE, | |
2289 | .type = V4L2_CTRL_TYPE_BOOLEAN, | |
2290 | .name = "Mute", | |
2291 | .minimum = 0, | |
2292 | .maximum = 1, | |
2293 | .step = 1, | |
2294 | .default_value = 1, | |
2295 | }, | |
2296 | { | |
2297 | .id = V4L2_CID_AUDIO_LOUDNESS, | |
2298 | .flags = V4L2_CTRL_FLAG_DISABLED, | |
2299 | }, | |
2300 | }; | |
2301 | ||
2302 | static int bcm2048_vidioc_querycap(struct file *file, void *priv, | |
925b6578 | 2303 | struct v4l2_capability *capability) |
899127b6 HV |
2304 | { |
2305 | struct bcm2048_device *bdev = video_get_drvdata(video_devdata(file)); | |
2306 | ||
2307 | strlcpy(capability->driver, BCM2048_DRIVER_NAME, | |
2308 | sizeof(capability->driver)); | |
2309 | strlcpy(capability->card, BCM2048_DRIVER_CARD, | |
2310 | sizeof(capability->card)); | |
2311 | snprintf(capability->bus_info, 32, "I2C: 0x%X", bdev->client->addr); | |
57e774cc | 2312 | capability->device_caps = V4L2_CAP_TUNER | V4L2_CAP_RADIO | |
899127b6 | 2313 | V4L2_CAP_HW_FREQ_SEEK; |
57e774cc HV |
2314 | capability->capabilities = capability->device_caps | |
2315 | V4L2_CAP_DEVICE_CAPS; | |
899127b6 HV |
2316 | |
2317 | return 0; | |
2318 | } | |
2319 | ||
2320 | static int bcm2048_vidioc_g_input(struct file *filp, void *priv, | |
925b6578 | 2321 | unsigned int *i) |
899127b6 HV |
2322 | { |
2323 | *i = 0; | |
2324 | ||
2325 | return 0; | |
2326 | } | |
2327 | ||
2328 | static int bcm2048_vidioc_s_input(struct file *filp, void *priv, | |
925b6578 | 2329 | unsigned int i) |
899127b6 HV |
2330 | { |
2331 | if (i) | |
2332 | return -EINVAL; | |
2333 | ||
2334 | return 0; | |
2335 | } | |
2336 | ||
2337 | static int bcm2048_vidioc_queryctrl(struct file *file, void *priv, | |
925b6578 | 2338 | struct v4l2_queryctrl *qc) |
899127b6 HV |
2339 | { |
2340 | int i; | |
2341 | ||
2342 | for (i = 0; i < ARRAY_SIZE(bcm2048_v4l2_queryctrl); i++) { | |
2343 | if (qc->id && qc->id == bcm2048_v4l2_queryctrl[i].id) { | |
65eccc7a | 2344 | *qc = bcm2048_v4l2_queryctrl[i]; |
899127b6 HV |
2345 | return 0; |
2346 | } | |
2347 | } | |
2348 | ||
2349 | return -EINVAL; | |
2350 | } | |
2351 | ||
2352 | static int bcm2048_vidioc_g_ctrl(struct file *file, void *priv, | |
925b6578 | 2353 | struct v4l2_control *ctrl) |
899127b6 HV |
2354 | { |
2355 | struct bcm2048_device *bdev = video_get_drvdata(video_devdata(file)); | |
2356 | int err = 0; | |
2357 | ||
2358 | if (!bdev) | |
2359 | return -ENODEV; | |
2360 | ||
2361 | switch (ctrl->id) { | |
2362 | case V4L2_CID_AUDIO_MUTE: | |
2363 | err = bcm2048_get_mute(bdev); | |
2364 | if (err >= 0) | |
2365 | ctrl->value = err; | |
2366 | break; | |
2367 | } | |
2368 | ||
2369 | return err; | |
2370 | } | |
2371 | ||
2372 | static int bcm2048_vidioc_s_ctrl(struct file *file, void *priv, | |
925b6578 | 2373 | struct v4l2_control *ctrl) |
899127b6 HV |
2374 | { |
2375 | struct bcm2048_device *bdev = video_get_drvdata(video_devdata(file)); | |
2376 | int err = 0; | |
2377 | ||
2378 | if (!bdev) | |
2379 | return -ENODEV; | |
2380 | ||
2381 | switch (ctrl->id) { | |
2382 | case V4L2_CID_AUDIO_MUTE: | |
2383 | if (ctrl->value) { | |
2384 | if (bdev->power_state) { | |
2385 | err = bcm2048_set_mute(bdev, ctrl->value); | |
2386 | err |= bcm2048_deinit(bdev); | |
2387 | } | |
2388 | } else { | |
2389 | if (!bdev->power_state) { | |
2390 | err = bcm2048_init(bdev); | |
2391 | err |= bcm2048_set_mute(bdev, ctrl->value); | |
2392 | } | |
2393 | } | |
2394 | break; | |
2395 | } | |
2396 | ||
2397 | return err; | |
2398 | } | |
2399 | ||
2400 | static int bcm2048_vidioc_g_audio(struct file *file, void *priv, | |
925b6578 | 2401 | struct v4l2_audio *audio) |
899127b6 HV |
2402 | { |
2403 | if (audio->index > 1) | |
2404 | return -EINVAL; | |
2405 | ||
2406 | strncpy(audio->name, "Radio", 32); | |
2407 | audio->capability = V4L2_AUDCAP_STEREO; | |
2408 | ||
2409 | return 0; | |
2410 | } | |
2411 | ||
2412 | static int bcm2048_vidioc_s_audio(struct file *file, void *priv, | |
925b6578 | 2413 | const struct v4l2_audio *audio) |
899127b6 HV |
2414 | { |
2415 | if (audio->index != 0) | |
2416 | return -EINVAL; | |
2417 | ||
2418 | return 0; | |
2419 | } | |
2420 | ||
2421 | static int bcm2048_vidioc_g_tuner(struct file *file, void *priv, | |
925b6578 | 2422 | struct v4l2_tuner *tuner) |
899127b6 HV |
2423 | { |
2424 | struct bcm2048_device *bdev = video_get_drvdata(video_devdata(file)); | |
2425 | s8 f_error; | |
2426 | s8 rssi; | |
2427 | ||
2428 | if (!bdev) | |
2429 | return -ENODEV; | |
2430 | ||
2431 | if (tuner->index > 0) | |
2432 | return -EINVAL; | |
2433 | ||
2434 | strncpy(tuner->name, "FM Receiver", 32); | |
2435 | tuner->type = V4L2_TUNER_RADIO; | |
2436 | tuner->rangelow = | |
2437 | dev_to_v4l2(bcm2048_get_region_bottom_frequency(bdev)); | |
2438 | tuner->rangehigh = | |
2439 | dev_to_v4l2(bcm2048_get_region_top_frequency(bdev)); | |
2440 | tuner->rxsubchans = V4L2_TUNER_SUB_STEREO; | |
2441 | tuner->capability = V4L2_TUNER_CAP_STEREO | V4L2_TUNER_CAP_LOW; | |
2442 | tuner->audmode = V4L2_TUNER_MODE_STEREO; | |
2443 | tuner->afc = 0; | |
2444 | if (bdev->power_state) { | |
2445 | /* | |
2446 | * Report frequencies with high carrier errors to have zero | |
2447 | * signal level | |
2448 | */ | |
2449 | f_error = bcm2048_get_fm_carrier_error(bdev); | |
2450 | if (f_error < BCM2048_FREQ_ERROR_FLOOR || | |
2451 | f_error > BCM2048_FREQ_ERROR_ROOF) { | |
2452 | tuner->signal = 0; | |
2453 | } else { | |
2454 | /* | |
2455 | * RSSI level -60 dB is defined to report full | |
69e98df7 | 2456 | * signal strength |
899127b6 HV |
2457 | */ |
2458 | rssi = bcm2048_get_fm_rssi(bdev); | |
2459 | if (rssi >= BCM2048_RSSI_LEVEL_BASE) { | |
2460 | tuner->signal = 0xFFFF; | |
2461 | } else if (rssi > BCM2048_RSSI_LEVEL_ROOF) { | |
2462 | tuner->signal = (rssi + | |
2463 | BCM2048_RSSI_LEVEL_ROOF_NEG) | |
2464 | * BCM2048_SIGNAL_MULTIPLIER; | |
2465 | } else { | |
2466 | tuner->signal = 0; | |
2467 | } | |
2468 | } | |
2469 | } else { | |
2470 | tuner->signal = 0; | |
2471 | } | |
2472 | ||
2473 | return 0; | |
2474 | } | |
2475 | ||
2476 | static int bcm2048_vidioc_s_tuner(struct file *file, void *priv, | |
925b6578 | 2477 | const struct v4l2_tuner *tuner) |
899127b6 HV |
2478 | { |
2479 | struct bcm2048_device *bdev = video_get_drvdata(video_devdata(file)); | |
2480 | ||
2481 | if (!bdev) | |
2482 | return -ENODEV; | |
2483 | ||
2484 | if (tuner->index > 0) | |
2485 | return -EINVAL; | |
2486 | ||
2487 | return 0; | |
2488 | } | |
2489 | ||
2490 | static int bcm2048_vidioc_g_frequency(struct file *file, void *priv, | |
925b6578 | 2491 | struct v4l2_frequency *freq) |
899127b6 HV |
2492 | { |
2493 | struct bcm2048_device *bdev = video_get_drvdata(video_devdata(file)); | |
2494 | int err = 0; | |
2495 | int f; | |
2496 | ||
2497 | if (!bdev->power_state) | |
2498 | return -ENODEV; | |
2499 | ||
2500 | freq->type = V4L2_TUNER_RADIO; | |
2501 | f = bcm2048_get_fm_frequency(bdev); | |
2502 | ||
2503 | if (f < 0) | |
2504 | err = f; | |
2505 | else | |
2506 | freq->frequency = dev_to_v4l2(f); | |
2507 | ||
2508 | return err; | |
2509 | } | |
2510 | ||
2511 | static int bcm2048_vidioc_s_frequency(struct file *file, void *priv, | |
925b6578 | 2512 | const struct v4l2_frequency *freq) |
899127b6 HV |
2513 | { |
2514 | struct bcm2048_device *bdev = video_get_drvdata(video_devdata(file)); | |
2515 | int err; | |
2516 | ||
2517 | if (freq->type != V4L2_TUNER_RADIO) | |
2518 | return -EINVAL; | |
2519 | ||
2520 | if (!bdev->power_state) | |
2521 | return -ENODEV; | |
2522 | ||
2523 | err = bcm2048_set_fm_frequency(bdev, v4l2_to_dev(freq->frequency)); | |
2524 | err |= bcm2048_set_fm_search_tune_mode(bdev, BCM2048_FM_PRE_SET_MODE); | |
2525 | ||
2526 | return err; | |
2527 | } | |
2528 | ||
2529 | static int bcm2048_vidioc_s_hw_freq_seek(struct file *file, void *priv, | |
925b6578 | 2530 | const struct v4l2_hw_freq_seek *seek) |
899127b6 HV |
2531 | { |
2532 | struct bcm2048_device *bdev = video_get_drvdata(video_devdata(file)); | |
2533 | int err; | |
2534 | ||
2535 | if (!bdev->power_state) | |
2536 | return -ENODEV; | |
2537 | ||
2538 | if ((seek->tuner != 0) || (seek->type != V4L2_TUNER_RADIO)) | |
2539 | return -EINVAL; | |
2540 | ||
2541 | err = bcm2048_set_fm_search_mode_direction(bdev, seek->seek_upward); | |
2542 | err |= bcm2048_set_fm_search_tune_mode(bdev, | |
925b6578 | 2543 | BCM2048_FM_AUTO_SEARCH_MODE); |
899127b6 HV |
2544 | |
2545 | return err; | |
2546 | } | |
2547 | ||
7f140181 | 2548 | static const struct v4l2_ioctl_ops bcm2048_ioctl_ops = { |
899127b6 HV |
2549 | .vidioc_querycap = bcm2048_vidioc_querycap, |
2550 | .vidioc_g_input = bcm2048_vidioc_g_input, | |
2551 | .vidioc_s_input = bcm2048_vidioc_s_input, | |
2552 | .vidioc_queryctrl = bcm2048_vidioc_queryctrl, | |
2553 | .vidioc_g_ctrl = bcm2048_vidioc_g_ctrl, | |
2554 | .vidioc_s_ctrl = bcm2048_vidioc_s_ctrl, | |
2555 | .vidioc_g_audio = bcm2048_vidioc_g_audio, | |
2556 | .vidioc_s_audio = bcm2048_vidioc_s_audio, | |
2557 | .vidioc_g_tuner = bcm2048_vidioc_g_tuner, | |
2558 | .vidioc_s_tuner = bcm2048_vidioc_s_tuner, | |
2559 | .vidioc_g_frequency = bcm2048_vidioc_g_frequency, | |
2560 | .vidioc_s_frequency = bcm2048_vidioc_s_frequency, | |
2561 | .vidioc_s_hw_freq_seek = bcm2048_vidioc_s_hw_freq_seek, | |
2562 | }; | |
2563 | ||
2564 | /* | |
2565 | * bcm2048_viddev_template - video device interface | |
2566 | */ | |
b104729e | 2567 | static const struct video_device bcm2048_viddev_template = { |
899127b6 HV |
2568 | .fops = &bcm2048_fops, |
2569 | .name = BCM2048_DRIVER_NAME, | |
54ad7b9d | 2570 | .release = video_device_release_empty, |
899127b6 HV |
2571 | .ioctl_ops = &bcm2048_ioctl_ops, |
2572 | }; | |
2573 | ||
2574 | /* | |
2575 | * I2C driver interface | |
2576 | */ | |
2577 | static int bcm2048_i2c_driver_probe(struct i2c_client *client, | |
925b6578 | 2578 | const struct i2c_device_id *id) |
899127b6 HV |
2579 | { |
2580 | struct bcm2048_device *bdev; | |
bb17141c | 2581 | int err; |
899127b6 HV |
2582 | |
2583 | bdev = kzalloc(sizeof(*bdev), GFP_KERNEL); | |
2584 | if (!bdev) { | |
899127b6 HV |
2585 | err = -ENOMEM; |
2586 | goto exit; | |
2587 | } | |
2588 | ||
899127b6 HV |
2589 | bdev->client = client; |
2590 | i2c_set_clientdata(client, bdev); | |
2591 | mutex_init(&bdev->mutex); | |
2592 | init_completion(&bdev->compl); | |
2593 | INIT_WORK(&bdev->work, bcm2048_work); | |
2594 | ||
2595 | if (client->irq) { | |
2596 | err = request_irq(client->irq, | |
925b6578 AG |
2597 | bcm2048_handler, IRQF_TRIGGER_FALLING, |
2598 | client->name, bdev); | |
899127b6 HV |
2599 | if (err < 0) { |
2600 | dev_err(&client->dev, "Could not request IRQ\n"); | |
54ad7b9d | 2601 | goto free_bdev; |
899127b6 HV |
2602 | } |
2603 | dev_dbg(&client->dev, "IRQ requested.\n"); | |
2604 | } else { | |
2605 | dev_dbg(&client->dev, "IRQ not configured. Using timeouts.\n"); | |
2606 | } | |
2607 | ||
54ad7b9d HV |
2608 | bdev->videodev = bcm2048_viddev_template; |
2609 | video_set_drvdata(&bdev->videodev, bdev); | |
2610 | if (video_register_device(&bdev->videodev, VFL_TYPE_RADIO, radio_nr)) { | |
899127b6 HV |
2611 | dev_dbg(&client->dev, "Could not register video device.\n"); |
2612 | err = -EIO; | |
2613 | goto free_irq; | |
2614 | } | |
2615 | ||
2616 | err = bcm2048_sysfs_register_properties(bdev); | |
2617 | if (err < 0) { | |
2618 | dev_dbg(&client->dev, "Could not register sysfs interface.\n"); | |
2619 | goto free_registration; | |
2620 | } | |
2621 | ||
2622 | err = bcm2048_probe(bdev); | |
2623 | if (err < 0) { | |
2624 | dev_dbg(&client->dev, "Failed to probe device information.\n"); | |
2625 | goto free_sysfs; | |
2626 | } | |
2627 | ||
2628 | return 0; | |
2629 | ||
2630 | free_sysfs: | |
2631 | bcm2048_sysfs_unregister_properties(bdev, ARRAY_SIZE(attrs)); | |
2632 | free_registration: | |
54ad7b9d | 2633 | video_unregister_device(&bdev->videodev); |
899127b6 HV |
2634 | free_irq: |
2635 | if (client->irq) | |
2636 | free_irq(client->irq, bdev); | |
899127b6 | 2637 | free_bdev: |
54ad7b9d | 2638 | i2c_set_clientdata(client, NULL); |
899127b6 HV |
2639 | kfree(bdev); |
2640 | exit: | |
2641 | return err; | |
2642 | } | |
2643 | ||
733e009c | 2644 | static int bcm2048_i2c_driver_remove(struct i2c_client *client) |
899127b6 HV |
2645 | { |
2646 | struct bcm2048_device *bdev = i2c_get_clientdata(client); | |
899127b6 HV |
2647 | |
2648 | if (!client->adapter) | |
2649 | return -ENODEV; | |
2650 | ||
2651 | if (bdev) { | |
899127b6 | 2652 | bcm2048_sysfs_unregister_properties(bdev, ARRAY_SIZE(attrs)); |
54ad7b9d | 2653 | video_unregister_device(&bdev->videodev); |
899127b6 HV |
2654 | |
2655 | if (bdev->power_state) | |
2656 | bcm2048_set_power_state(bdev, BCM2048_POWER_OFF); | |
2657 | ||
2658 | if (client->irq > 0) | |
2659 | free_irq(client->irq, bdev); | |
2660 | ||
2661 | cancel_work_sync(&bdev->work); | |
2662 | ||
2663 | kfree(bdev); | |
2664 | } | |
2665 | ||
899127b6 HV |
2666 | return 0; |
2667 | } | |
2668 | ||
2669 | /* | |
2670 | * bcm2048_i2c_driver - i2c driver interface | |
2671 | */ | |
2672 | static const struct i2c_device_id bcm2048_id[] = { | |
5937a784 | 2673 | { "bcm2048", 0 }, |
899127b6 HV |
2674 | { }, |
2675 | }; | |
2676 | MODULE_DEVICE_TABLE(i2c, bcm2048_id); | |
2677 | ||
2678 | static struct i2c_driver bcm2048_i2c_driver = { | |
2679 | .driver = { | |
2680 | .name = BCM2048_DRIVER_NAME, | |
2681 | }, | |
2682 | .probe = bcm2048_i2c_driver_probe, | |
733e009c | 2683 | .remove = bcm2048_i2c_driver_remove, |
899127b6 HV |
2684 | .id_table = bcm2048_id, |
2685 | }; | |
2686 | ||
4c205ab5 | 2687 | module_i2c_driver(bcm2048_i2c_driver); |
899127b6 HV |
2688 | |
2689 | MODULE_LICENSE("GPL"); | |
2690 | MODULE_AUTHOR(BCM2048_DRIVER_AUTHOR); | |
2691 | MODULE_DESCRIPTION(BCM2048_DRIVER_DESC); | |
2692 | MODULE_VERSION("0.0.2"); |