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8b7a186c MH |
1 | /* |
2 | * FM Driver for Connectivity chip of Texas Instruments. | |
3 | * This sub-module of FM driver implements FM TX functionality. | |
4 | * | |
5 | * Copyright (C) 2011 Texas Instruments | |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License version 2 as | |
9 | * published by the Free Software Foundation. | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, | |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | * GNU General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License | |
17 | * along with this program; if not, write to the Free Software | |
18 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
19 | * | |
20 | */ | |
21 | ||
22 | #include <linux/delay.h> | |
23 | #include "fmdrv.h" | |
24 | #include "fmdrv_common.h" | |
25 | #include "fmdrv_tx.h" | |
26 | ||
8cc20dd8 | 27 | int fm_tx_set_stereo_mono(struct fmdev *fmdev, u16 mode) |
8b7a186c MH |
28 | { |
29 | u16 payload; | |
8cc20dd8 | 30 | int ret; |
8b7a186c MH |
31 | |
32 | if (fmdev->tx_data.aud_mode == mode) | |
33 | return 0; | |
34 | ||
35 | fmdbg("stereo mode: %d\n", mode); | |
36 | ||
37 | /* Set Stereo/Mono mode */ | |
38 | payload = (1 - mode); | |
39 | ret = fmc_send_cmd(fmdev, MONO_SET, REG_WR, &payload, | |
40 | sizeof(payload), NULL, NULL); | |
41 | if (ret < 0) | |
42 | return ret; | |
43 | ||
44 | fmdev->tx_data.aud_mode = mode; | |
45 | ||
46 | return ret; | |
47 | } | |
48 | ||
8cc20dd8 | 49 | static int set_rds_text(struct fmdev *fmdev, u8 *rds_text) |
8b7a186c MH |
50 | { |
51 | u16 payload; | |
8cc20dd8 | 52 | int ret; |
8b7a186c MH |
53 | |
54 | ret = fmc_send_cmd(fmdev, RDS_DATA_SET, REG_WR, rds_text, | |
55 | strlen(rds_text), NULL, NULL); | |
56 | if (ret < 0) | |
57 | return ret; | |
58 | ||
59 | /* Scroll mode */ | |
60 | payload = (u16)0x1; | |
61 | ret = fmc_send_cmd(fmdev, DISPLAY_MODE, REG_WR, &payload, | |
62 | sizeof(payload), NULL, NULL); | |
63 | if (ret < 0) | |
64 | return ret; | |
65 | ||
66 | return 0; | |
67 | } | |
68 | ||
8cc20dd8 | 69 | static int set_rds_data_mode(struct fmdev *fmdev, u8 mode) |
8b7a186c MH |
70 | { |
71 | u16 payload; | |
8cc20dd8 | 72 | int ret; |
8b7a186c MH |
73 | |
74 | /* Setting unique PI TODO: how unique? */ | |
75 | payload = (u16)0xcafe; | |
76 | ret = fmc_send_cmd(fmdev, PI_SET, REG_WR, &payload, | |
77 | sizeof(payload), NULL, NULL); | |
78 | if (ret < 0) | |
79 | return ret; | |
80 | ||
81 | /* Set decoder id */ | |
82 | payload = (u16)0xa; | |
83 | ret = fmc_send_cmd(fmdev, DI_SET, REG_WR, &payload, | |
84 | sizeof(payload), NULL, NULL); | |
85 | if (ret < 0) | |
86 | return ret; | |
87 | ||
88 | /* TODO: RDS_MODE_GET? */ | |
89 | return 0; | |
90 | } | |
91 | ||
8cc20dd8 | 92 | static int set_rds_len(struct fmdev *fmdev, u8 type, u16 len) |
8b7a186c MH |
93 | { |
94 | u16 payload; | |
8cc20dd8 | 95 | int ret; |
8b7a186c MH |
96 | |
97 | len |= type << 8; | |
98 | payload = len; | |
99 | ret = fmc_send_cmd(fmdev, RDS_CONFIG_DATA_SET, REG_WR, &payload, | |
100 | sizeof(payload), NULL, NULL); | |
101 | if (ret < 0) | |
102 | return ret; | |
103 | ||
104 | /* TODO: LENGTH_GET? */ | |
105 | return 0; | |
106 | } | |
107 | ||
8cc20dd8 | 108 | int fm_tx_set_rds_mode(struct fmdev *fmdev, u8 rds_en_dis) |
8b7a186c MH |
109 | { |
110 | u16 payload; | |
8cc20dd8 | 111 | int ret; |
8b7a186c MH |
112 | u8 rds_text[] = "Zoom2\n"; |
113 | ||
114 | fmdbg("rds_en_dis:%d(E:%d, D:%d)\n", rds_en_dis, | |
115 | FM_RDS_ENABLE, FM_RDS_DISABLE); | |
116 | ||
117 | if (rds_en_dis == FM_RDS_ENABLE) { | |
118 | /* Set RDS length */ | |
119 | set_rds_len(fmdev, 0, strlen(rds_text)); | |
120 | ||
121 | /* Set RDS text */ | |
122 | set_rds_text(fmdev, rds_text); | |
123 | ||
124 | /* Set RDS mode */ | |
125 | set_rds_data_mode(fmdev, 0x0); | |
126 | } | |
127 | ||
128 | /* Send command to enable RDS */ | |
129 | if (rds_en_dis == FM_RDS_ENABLE) | |
130 | payload = 0x01; | |
131 | else | |
132 | payload = 0x00; | |
133 | ||
134 | ret = fmc_send_cmd(fmdev, RDS_DATA_ENB, REG_WR, &payload, | |
135 | sizeof(payload), NULL, NULL); | |
136 | if (ret < 0) | |
137 | return ret; | |
138 | ||
139 | if (rds_en_dis == FM_RDS_ENABLE) { | |
140 | /* Set RDS length */ | |
141 | set_rds_len(fmdev, 0, strlen(rds_text)); | |
142 | ||
143 | /* Set RDS text */ | |
144 | set_rds_text(fmdev, rds_text); | |
145 | } | |
146 | fmdev->tx_data.rds.flag = rds_en_dis; | |
147 | ||
148 | return 0; | |
149 | } | |
150 | ||
8cc20dd8 | 151 | int fm_tx_set_radio_text(struct fmdev *fmdev, u8 *rds_text, u8 rds_type) |
8b7a186c MH |
152 | { |
153 | u16 payload; | |
8cc20dd8 | 154 | int ret; |
8b7a186c MH |
155 | |
156 | if (fmdev->curr_fmmode != FM_MODE_TX) | |
157 | return -EPERM; | |
158 | ||
159 | fm_tx_set_rds_mode(fmdev, 0); | |
160 | ||
161 | /* Set RDS length */ | |
162 | set_rds_len(fmdev, rds_type, strlen(rds_text)); | |
163 | ||
164 | /* Set RDS text */ | |
165 | set_rds_text(fmdev, rds_text); | |
166 | ||
167 | /* Set RDS mode */ | |
168 | set_rds_data_mode(fmdev, 0x0); | |
169 | ||
170 | payload = 1; | |
171 | ret = fmc_send_cmd(fmdev, RDS_DATA_ENB, REG_WR, &payload, | |
172 | sizeof(payload), NULL, NULL); | |
173 | if (ret < 0) | |
174 | return ret; | |
175 | ||
176 | return 0; | |
177 | } | |
178 | ||
8cc20dd8 | 179 | int fm_tx_set_af(struct fmdev *fmdev, u32 af) |
8b7a186c MH |
180 | { |
181 | u16 payload; | |
8cc20dd8 | 182 | int ret; |
8b7a186c MH |
183 | |
184 | if (fmdev->curr_fmmode != FM_MODE_TX) | |
185 | return -EPERM; | |
186 | ||
187 | fmdbg("AF: %d\n", af); | |
188 | ||
189 | af = (af - 87500) / 100; | |
190 | payload = (u16)af; | |
191 | ret = fmc_send_cmd(fmdev, TA_SET, REG_WR, &payload, | |
192 | sizeof(payload), NULL, NULL); | |
193 | if (ret < 0) | |
194 | return ret; | |
195 | ||
196 | return 0; | |
197 | } | |
198 | ||
8cc20dd8 | 199 | int fm_tx_set_region(struct fmdev *fmdev, u8 region) |
8b7a186c MH |
200 | { |
201 | u16 payload; | |
8cc20dd8 | 202 | int ret; |
8b7a186c MH |
203 | |
204 | if (region != FM_BAND_EUROPE_US && region != FM_BAND_JAPAN) { | |
205 | fmerr("Invalid band\n"); | |
206 | return -EINVAL; | |
207 | } | |
208 | ||
209 | /* Send command to set the band */ | |
210 | payload = (u16)region; | |
211 | ret = fmc_send_cmd(fmdev, TX_BAND_SET, REG_WR, &payload, | |
212 | sizeof(payload), NULL, NULL); | |
213 | if (ret < 0) | |
214 | return ret; | |
215 | ||
216 | return 0; | |
217 | } | |
218 | ||
8cc20dd8 | 219 | int fm_tx_set_mute_mode(struct fmdev *fmdev, u8 mute_mode_toset) |
8b7a186c MH |
220 | { |
221 | u16 payload; | |
8cc20dd8 | 222 | int ret; |
8b7a186c MH |
223 | |
224 | fmdbg("tx: mute mode %d\n", mute_mode_toset); | |
225 | ||
226 | payload = mute_mode_toset; | |
227 | ret = fmc_send_cmd(fmdev, MUTE, REG_WR, &payload, | |
228 | sizeof(payload), NULL, NULL); | |
229 | if (ret < 0) | |
230 | return ret; | |
231 | ||
232 | return 0; | |
233 | } | |
234 | ||
235 | /* Set TX Audio I/O */ | |
8cc20dd8 | 236 | static int set_audio_io(struct fmdev *fmdev) |
8b7a186c MH |
237 | { |
238 | struct fmtx_data *tx = &fmdev->tx_data; | |
239 | u16 payload; | |
8cc20dd8 | 240 | int ret; |
8b7a186c MH |
241 | |
242 | /* Set Audio I/O Enable */ | |
243 | payload = tx->audio_io; | |
244 | ret = fmc_send_cmd(fmdev, AUDIO_IO_SET, REG_WR, &payload, | |
245 | sizeof(payload), NULL, NULL); | |
246 | if (ret < 0) | |
247 | return ret; | |
248 | ||
249 | /* TODO: is audio set? */ | |
250 | return 0; | |
251 | } | |
252 | ||
253 | /* Start TX Transmission */ | |
8cc20dd8 | 254 | static int enable_xmit(struct fmdev *fmdev, u8 new_xmit_state) |
8b7a186c MH |
255 | { |
256 | struct fmtx_data *tx = &fmdev->tx_data; | |
257 | unsigned long timeleft; | |
258 | u16 payload; | |
8cc20dd8 | 259 | int ret; |
8b7a186c MH |
260 | |
261 | /* Enable POWER_ENB interrupts */ | |
262 | payload = FM_POW_ENB_EVENT; | |
263 | ret = fmc_send_cmd(fmdev, INT_MASK_SET, REG_WR, &payload, | |
264 | sizeof(payload), NULL, NULL); | |
265 | if (ret < 0) | |
266 | return ret; | |
267 | ||
268 | /* Set Power Enable */ | |
269 | payload = new_xmit_state; | |
270 | ret = fmc_send_cmd(fmdev, POWER_ENB_SET, REG_WR, &payload, | |
271 | sizeof(payload), NULL, NULL); | |
272 | if (ret < 0) | |
273 | return ret; | |
274 | ||
275 | /* Wait for Power Enabled */ | |
276 | init_completion(&fmdev->maintask_comp); | |
277 | timeleft = wait_for_completion_timeout(&fmdev->maintask_comp, | |
278 | FM_DRV_TX_TIMEOUT); | |
279 | if (!timeleft) { | |
280 | fmerr("Timeout(%d sec),didn't get tune ended interrupt\n", | |
281 | jiffies_to_msecs(FM_DRV_TX_TIMEOUT) / 1000); | |
282 | return -ETIMEDOUT; | |
283 | } | |
284 | ||
285 | set_bit(FM_CORE_TX_XMITING, &fmdev->flag); | |
286 | tx->xmit_state = new_xmit_state; | |
287 | ||
288 | return 0; | |
289 | } | |
290 | ||
291 | /* Set TX power level */ | |
8cc20dd8 | 292 | int fm_tx_set_pwr_lvl(struct fmdev *fmdev, u8 new_pwr_lvl) |
8b7a186c MH |
293 | { |
294 | u16 payload; | |
295 | struct fmtx_data *tx = &fmdev->tx_data; | |
8cc20dd8 | 296 | int ret; |
8b7a186c MH |
297 | |
298 | if (fmdev->curr_fmmode != FM_MODE_TX) | |
299 | return -EPERM; | |
300 | fmdbg("tx: pwr_level_to_set %ld\n", (long int)new_pwr_lvl); | |
301 | ||
302 | /* If the core isn't ready update global variable */ | |
303 | if (!test_bit(FM_CORE_READY, &fmdev->flag)) { | |
304 | tx->pwr_lvl = new_pwr_lvl; | |
305 | return 0; | |
306 | } | |
307 | ||
308 | /* Set power level: Application will specify power level value in | |
309 | * units of dB/uV, whereas range and step are specific to FM chip. | |
310 | * For TI's WL chips, convert application specified power level value | |
311 | * to chip specific value by subtracting 122 from it. Refer to TI FM | |
312 | * data sheet for details. | |
313 | * */ | |
314 | ||
315 | payload = (FM_PWR_LVL_HIGH - new_pwr_lvl); | |
316 | ret = fmc_send_cmd(fmdev, POWER_LEV_SET, REG_WR, &payload, | |
317 | sizeof(payload), NULL, NULL); | |
318 | if (ret < 0) | |
319 | return ret; | |
320 | ||
321 | /* TODO: is the power level set? */ | |
322 | tx->pwr_lvl = new_pwr_lvl; | |
323 | ||
324 | return 0; | |
325 | } | |
326 | ||
327 | /* | |
328 | * Sets FM TX pre-emphasis filter value (OFF, 50us, or 75us) | |
329 | * Convert V4L2 specified filter values to chip specific filter values. | |
330 | */ | |
8cc20dd8 | 331 | int fm_tx_set_preemph_filter(struct fmdev *fmdev, u32 preemphasis) |
8b7a186c MH |
332 | { |
333 | struct fmtx_data *tx = &fmdev->tx_data; | |
334 | u16 payload; | |
8cc20dd8 | 335 | int ret; |
8b7a186c MH |
336 | |
337 | if (fmdev->curr_fmmode != FM_MODE_TX) | |
338 | return -EPERM; | |
339 | ||
340 | switch (preemphasis) { | |
341 | case V4L2_PREEMPHASIS_DISABLED: | |
342 | payload = FM_TX_PREEMPH_OFF; | |
343 | break; | |
344 | case V4L2_PREEMPHASIS_50_uS: | |
345 | payload = FM_TX_PREEMPH_50US; | |
346 | break; | |
347 | case V4L2_PREEMPHASIS_75_uS: | |
348 | payload = FM_TX_PREEMPH_75US; | |
349 | break; | |
350 | } | |
351 | ||
352 | ret = fmc_send_cmd(fmdev, PREMPH_SET, REG_WR, &payload, | |
353 | sizeof(payload), NULL, NULL); | |
354 | if (ret < 0) | |
355 | return ret; | |
356 | ||
357 | tx->preemph = payload; | |
358 | ||
359 | return ret; | |
360 | } | |
361 | ||
362 | /* Get the TX tuning capacitor value.*/ | |
8cc20dd8 | 363 | int fm_tx_get_tune_cap_val(struct fmdev *fmdev) |
8b7a186c MH |
364 | { |
365 | u16 curr_val; | |
8cc20dd8 XW |
366 | u32 resp_len; |
367 | int ret; | |
8b7a186c MH |
368 | |
369 | if (fmdev->curr_fmmode != FM_MODE_TX) | |
370 | return -EPERM; | |
371 | ||
372 | ret = fmc_send_cmd(fmdev, READ_FMANT_TUNE_VALUE, REG_RD, | |
373 | NULL, sizeof(curr_val), &curr_val, &resp_len); | |
374 | if (ret < 0) | |
375 | return ret; | |
376 | ||
377 | curr_val = be16_to_cpu(curr_val); | |
378 | ||
379 | return curr_val; | |
380 | } | |
381 | ||
382 | /* Set TX Frequency */ | |
8cc20dd8 | 383 | int fm_tx_set_freq(struct fmdev *fmdev, u32 freq_to_set) |
8b7a186c MH |
384 | { |
385 | struct fmtx_data *tx = &fmdev->tx_data; | |
386 | u16 payload, chanl_index; | |
8cc20dd8 | 387 | int ret; |
8b7a186c MH |
388 | |
389 | if (test_bit(FM_CORE_TX_XMITING, &fmdev->flag)) { | |
390 | enable_xmit(fmdev, 0); | |
391 | clear_bit(FM_CORE_TX_XMITING, &fmdev->flag); | |
392 | } | |
393 | ||
394 | /* Enable FR, BL interrupts */ | |
395 | payload = (FM_FR_EVENT | FM_BL_EVENT); | |
396 | ret = fmc_send_cmd(fmdev, INT_MASK_SET, REG_WR, &payload, | |
397 | sizeof(payload), NULL, NULL); | |
398 | if (ret < 0) | |
399 | return ret; | |
400 | ||
401 | tx->tx_frq = (unsigned long)freq_to_set; | |
402 | fmdbg("tx: freq_to_set %ld\n", (long int)tx->tx_frq); | |
403 | ||
404 | chanl_index = freq_to_set / 10; | |
405 | ||
406 | /* Set current tuner channel */ | |
407 | payload = chanl_index; | |
408 | ret = fmc_send_cmd(fmdev, CHANL_SET, REG_WR, &payload, | |
409 | sizeof(payload), NULL, NULL); | |
410 | if (ret < 0) | |
411 | return ret; | |
412 | ||
413 | fm_tx_set_pwr_lvl(fmdev, tx->pwr_lvl); | |
414 | fm_tx_set_preemph_filter(fmdev, tx->preemph); | |
415 | ||
416 | tx->audio_io = 0x01; /* I2S */ | |
417 | set_audio_io(fmdev); | |
418 | ||
419 | enable_xmit(fmdev, 0x01); /* Enable transmission */ | |
420 | ||
421 | tx->aud_mode = FM_STEREO_MODE; | |
422 | tx->rds.flag = FM_RDS_DISABLE; | |
423 | ||
424 | return 0; | |
425 | } | |
426 |