Commit | Line | Data |
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47b75ec1 | 1 | /* |
955e6ed8 MCC |
2 | * Samsung s5h1432 DVB-T demodulator driver |
3 | * | |
4 | * Copyright (C) 2009 Bill Liu <Bill.Liu@Conexant.com> | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License as published by | |
8 | * the Free Software Foundation; either version 2 of the License, or | |
9 | * (at your option) any later version. | |
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., 675 Mass Ave, Cambridge, MA 02139, USA. | |
19 | */ | |
47b75ec1 PB |
20 | |
21 | #include <linux/kernel.h> | |
22 | #include <linux/init.h> | |
23 | #include <linux/module.h> | |
24 | #include <linux/string.h> | |
25 | #include <linux/slab.h> | |
26 | #include <linux/delay.h> | |
27 | #include "dvb_frontend.h" | |
28 | #include "s5h1432.h" | |
29 | ||
30 | struct s5h1432_state { | |
31 | ||
32 | struct i2c_adapter *i2c; | |
33 | ||
34 | /* configuration settings */ | |
35 | const struct s5h1432_config *config; | |
36 | ||
37 | struct dvb_frontend frontend; | |
38 | ||
39 | fe_modulation_t current_modulation; | |
40 | unsigned int first_tune:1; | |
41 | ||
42 | u32 current_frequency; | |
43 | int if_freq; | |
44 | ||
45 | u8 inversion; | |
46 | }; | |
47 | ||
48 | static int debug; | |
49 | ||
50 | #define dprintk(arg...) do { \ | |
51 | if (debug) \ | |
52 | printk(arg); \ | |
53 | } while (0) | |
54 | ||
47b75ec1 | 55 | static int s5h1432_writereg(struct s5h1432_state *state, |
bda7f4ee | 56 | u8 addr, u8 reg, u8 data) |
47b75ec1 PB |
57 | { |
58 | int ret; | |
59 | u8 buf[] = { reg, data }; | |
60 | ||
bda7f4ee | 61 | struct i2c_msg msg = {.addr = addr, .flags = 0, .buf = buf, .len = 2 }; |
47b75ec1 PB |
62 | |
63 | ret = i2c_transfer(state->i2c, &msg, 1); | |
64 | ||
65 | if (ret != 1) | |
66 | printk(KERN_ERR "%s: writereg error 0x%02x 0x%02x 0x%04x, " | |
67 | "ret == %i)\n", __func__, addr, reg, data, ret); | |
68 | ||
69 | return (ret != 1) ? -1 : 0; | |
70 | } | |
71 | ||
72 | static u8 s5h1432_readreg(struct s5h1432_state *state, u8 addr, u8 reg) | |
73 | { | |
74 | int ret; | |
75 | u8 b0[] = { reg }; | |
76 | u8 b1[] = { 0 }; | |
77 | ||
78 | struct i2c_msg msg[] = { | |
bda7f4ee DH |
79 | {.addr = addr, .flags = 0, .buf = b0, .len = 1}, |
80 | {.addr = addr, .flags = I2C_M_RD, .buf = b1, .len = 1} | |
81 | }; | |
47b75ec1 PB |
82 | |
83 | ret = i2c_transfer(state->i2c, msg, 2); | |
84 | ||
85 | if (ret != 2) | |
86 | printk(KERN_ERR "%s: readreg error (ret == %i)\n", | |
bda7f4ee | 87 | __func__, ret); |
47b75ec1 PB |
88 | return b1[0]; |
89 | } | |
90 | ||
91 | static int s5h1432_sleep(struct dvb_frontend *fe) | |
92 | { | |
93 | return 0; | |
94 | } | |
95 | ||
bda7f4ee DH |
96 | static int s5h1432_set_channel_bandwidth(struct dvb_frontend *fe, |
97 | u32 bandwidth) | |
47b75ec1 | 98 | { |
47b75ec1 PB |
99 | struct s5h1432_state *state = fe->demodulator_priv; |
100 | ||
101 | u8 reg = 0; | |
102 | ||
bda7f4ee | 103 | /* Register [0x2E] bit 3:2 : 8MHz = 0; 7MHz = 1; 6MHz = 2 */ |
47b75ec1 PB |
104 | reg = s5h1432_readreg(state, S5H1432_I2C_TOP_ADDR, 0x2E); |
105 | reg &= ~(0x0C); | |
106 | switch (bandwidth) { | |
107 | case 6: | |
108 | reg |= 0x08; | |
109 | break; | |
110 | case 7: | |
111 | reg |= 0x04; | |
112 | break; | |
113 | case 8: | |
114 | reg |= 0x00; | |
115 | break; | |
116 | default: | |
bda7f4ee | 117 | return 0; |
47b75ec1 PB |
118 | } |
119 | s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0x2E, reg); | |
bda7f4ee | 120 | return 1; |
47b75ec1 PB |
121 | } |
122 | ||
123 | static int s5h1432_set_IF(struct dvb_frontend *fe, u32 ifFreqHz) | |
124 | { | |
47b75ec1 PB |
125 | struct s5h1432_state *state = fe->demodulator_priv; |
126 | ||
127 | switch (ifFreqHz) { | |
128 | case TAIWAN_HI_IF_FREQ_44_MHZ: | |
bda7f4ee DH |
129 | s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0xe4, 0x55); |
130 | s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0xe5, 0x55); | |
131 | s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0xe7, 0x15); | |
132 | break; | |
47b75ec1 | 133 | case EUROPE_HI_IF_FREQ_36_MHZ: |
bda7f4ee DH |
134 | s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0xe4, 0x00); |
135 | s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0xe5, 0x00); | |
136 | s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0xe7, 0x40); | |
137 | break; | |
47b75ec1 | 138 | case IF_FREQ_6_MHZ: |
bda7f4ee DH |
139 | s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0xe4, 0x00); |
140 | s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0xe5, 0x00); | |
141 | s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0xe7, 0xe0); | |
142 | break; | |
47b75ec1 | 143 | case IF_FREQ_3point3_MHZ: |
bda7f4ee DH |
144 | s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0xe4, 0x66); |
145 | s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0xe5, 0x66); | |
146 | s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0xe7, 0xEE); | |
147 | break; | |
47b75ec1 | 148 | case IF_FREQ_3point5_MHZ: |
bda7f4ee DH |
149 | s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0xe4, 0x55); |
150 | s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0xe5, 0x55); | |
151 | s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0xe7, 0xED); | |
152 | break; | |
47b75ec1 | 153 | case IF_FREQ_4_MHZ: |
bda7f4ee DH |
154 | s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0xe4, 0xAA); |
155 | s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0xe5, 0xAA); | |
156 | s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0xe7, 0xEA); | |
157 | break; | |
47b75ec1 PB |
158 | default: |
159 | { | |
bda7f4ee DH |
160 | u32 value = 0; |
161 | value = (u32) (((48000 - (ifFreqHz / 1000)) * 512 * | |
162 | (u32) 32768) / (48 * 1000)); | |
163 | printk(KERN_INFO | |
955e6ed8 | 164 | "Default IFFreq %d :reg value = 0x%x\n", |
bda7f4ee DH |
165 | ifFreqHz, value); |
166 | s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0xe4, | |
167 | (u8) value & 0xFF); | |
168 | s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0xe5, | |
169 | (u8) (value >> 8) & 0xFF); | |
170 | s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0xe7, | |
171 | (u8) (value >> 16) & 0xFF); | |
172 | break; | |
173 | } | |
47b75ec1 PB |
174 | |
175 | } | |
176 | ||
bda7f4ee | 177 | return 1; |
47b75ec1 PB |
178 | } |
179 | ||
180 | /* Talk to the demod, set the FEC, GUARD, QAM settings etc */ | |
181 | static int s5h1432_set_frontend(struct dvb_frontend *fe, | |
bda7f4ee | 182 | struct dvb_frontend_parameters *p) |
47b75ec1 PB |
183 | { |
184 | u32 dvb_bandwidth = 8; | |
185 | struct s5h1432_state *state = fe->demodulator_priv; | |
186 | ||
187 | if (p->frequency == state->current_frequency) { | |
bda7f4ee DH |
188 | /*current_frequency = p->frequency; */ |
189 | /*state->current_frequency = p->frequency; */ | |
47b75ec1 | 190 | } else { |
bda7f4ee DH |
191 | fe->ops.tuner_ops.set_params(fe, p); |
192 | msleep(300); | |
47b75ec1 PB |
193 | s5h1432_set_channel_bandwidth(fe, dvb_bandwidth); |
194 | switch (p->u.ofdm.bandwidth) { | |
195 | case BANDWIDTH_6_MHZ: | |
bda7f4ee DH |
196 | dvb_bandwidth = 6; |
197 | s5h1432_set_IF(fe, IF_FREQ_4_MHZ); | |
198 | break; | |
47b75ec1 | 199 | case BANDWIDTH_7_MHZ: |
bda7f4ee DH |
200 | dvb_bandwidth = 7; |
201 | s5h1432_set_IF(fe, IF_FREQ_4_MHZ); | |
202 | break; | |
47b75ec1 | 203 | case BANDWIDTH_8_MHZ: |
bda7f4ee DH |
204 | dvb_bandwidth = 8; |
205 | s5h1432_set_IF(fe, IF_FREQ_4_MHZ); | |
206 | break; | |
47b75ec1 | 207 | default: |
bda7f4ee DH |
208 | return 0; |
209 | } | |
210 | /*fe->ops.tuner_ops.set_params(fe, p); */ | |
47b75ec1 | 211 | /*Soft Reset chip*/ |
bda7f4ee DH |
212 | msleep(30); |
213 | s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0x09, 0x1a); | |
214 | msleep(30); | |
215 | s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0x09, 0x1b); | |
47b75ec1 PB |
216 | |
217 | s5h1432_set_channel_bandwidth(fe, dvb_bandwidth); | |
218 | switch (p->u.ofdm.bandwidth) { | |
219 | case BANDWIDTH_6_MHZ: | |
bda7f4ee DH |
220 | dvb_bandwidth = 6; |
221 | s5h1432_set_IF(fe, IF_FREQ_4_MHZ); | |
222 | break; | |
47b75ec1 | 223 | case BANDWIDTH_7_MHZ: |
bda7f4ee DH |
224 | dvb_bandwidth = 7; |
225 | s5h1432_set_IF(fe, IF_FREQ_4_MHZ); | |
226 | break; | |
47b75ec1 | 227 | case BANDWIDTH_8_MHZ: |
bda7f4ee DH |
228 | dvb_bandwidth = 8; |
229 | s5h1432_set_IF(fe, IF_FREQ_4_MHZ); | |
230 | break; | |
47b75ec1 | 231 | default: |
bda7f4ee DH |
232 | return 0; |
233 | } | |
234 | /*fe->ops.tuner_ops.set_params(fe,p); */ | |
235 | /*Soft Reset chip*/ | |
236 | msleep(30); | |
237 | s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0x09, 0x1a); | |
238 | msleep(30); | |
239 | s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0x09, 0x1b); | |
47b75ec1 PB |
240 | |
241 | } | |
242 | ||
243 | state->current_frequency = p->frequency; | |
244 | ||
245 | return 0; | |
246 | } | |
247 | ||
47b75ec1 PB |
248 | static int s5h1432_init(struct dvb_frontend *fe) |
249 | { | |
250 | struct s5h1432_state *state = fe->demodulator_priv; | |
251 | ||
252 | u8 reg = 0; | |
253 | state->current_frequency = 0; | |
254 | printk(KERN_INFO " s5h1432_init().\n"); | |
255 | ||
bda7f4ee DH |
256 | /*Set VSB mode as default, this also does a soft reset */ |
257 | /*Initialize registers */ | |
258 | ||
259 | s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0x04, 0xa8); | |
260 | s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0x05, 0x01); | |
261 | s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0x07, 0x70); | |
262 | s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0x19, 0x80); | |
263 | s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0x1b, 0x9D); | |
264 | s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0x1c, 0x30); | |
265 | s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0x1d, 0x20); | |
266 | s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0x1e, 0x1B); | |
267 | s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0x2e, 0x40); | |
268 | s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0x42, 0x84); | |
269 | s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0x50, 0x5a); | |
270 | s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0x5a, 0xd3); | |
271 | s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0x68, 0x50); | |
272 | s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0xb8, 0x3c); | |
273 | s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0xc4, 0x10); | |
274 | s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0xcc, 0x9c); | |
275 | s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0xDA, 0x00); | |
276 | s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0xe1, 0x94); | |
277 | /* s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0xf4, 0xa1); */ | |
278 | s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0xf9, 0x00); | |
279 | ||
280 | /*For NXP tuner*/ | |
281 | ||
282 | /*Set 3.3MHz as default IF frequency */ | |
283 | s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0xe4, 0x66); | |
284 | s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0xe5, 0x66); | |
285 | s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0xe7, 0xEE); | |
286 | /* Set reg 0x1E to get the full dynamic range */ | |
287 | s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0x1e, 0x31); | |
288 | ||
289 | /* Mode setting in demod */ | |
47b75ec1 PB |
290 | reg = s5h1432_readreg(state, S5H1432_I2C_TOP_ADDR, 0x42); |
291 | reg |= 0x80; | |
292 | s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0x42, reg); | |
bda7f4ee | 293 | /* Serial mode */ |
47b75ec1 | 294 | |
bda7f4ee | 295 | /* Soft Reset chip */ |
47b75ec1 | 296 | |
bda7f4ee | 297 | s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0x09, 0x1a); |
47b75ec1 | 298 | msleep(30); |
bda7f4ee | 299 | s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0x09, 0x1b); |
47b75ec1 PB |
300 | |
301 | ||
302 | return 0; | |
303 | } | |
304 | ||
47b75ec1 PB |
305 | static int s5h1432_read_status(struct dvb_frontend *fe, fe_status_t *status) |
306 | { | |
307 | return 0; | |
308 | } | |
309 | ||
47b75ec1 | 310 | static int s5h1432_read_signal_strength(struct dvb_frontend *fe, |
bda7f4ee | 311 | u16 *signal_strength) |
47b75ec1 PB |
312 | { |
313 | return 0; | |
314 | } | |
315 | ||
316 | static int s5h1432_read_snr(struct dvb_frontend *fe, u16 *snr) | |
317 | { | |
318 | return 0; | |
319 | } | |
320 | ||
321 | static int s5h1432_read_ucblocks(struct dvb_frontend *fe, u32 *ucblocks) | |
322 | { | |
323 | ||
324 | return 0; | |
325 | } | |
326 | ||
327 | static int s5h1432_read_ber(struct dvb_frontend *fe, u32 *ber) | |
328 | { | |
329 | return 0; | |
330 | } | |
331 | ||
332 | static int s5h1432_get_frontend(struct dvb_frontend *fe, | |
333 | struct dvb_frontend_parameters *p) | |
334 | { | |
335 | return 0; | |
336 | } | |
337 | ||
338 | static int s5h1432_get_tune_settings(struct dvb_frontend *fe, | |
339 | struct dvb_frontend_tune_settings *tune) | |
340 | { | |
341 | return 0; | |
342 | } | |
343 | ||
344 | static void s5h1432_release(struct dvb_frontend *fe) | |
345 | { | |
346 | struct s5h1432_state *state = fe->demodulator_priv; | |
347 | kfree(state); | |
348 | } | |
349 | ||
350 | static struct dvb_frontend_ops s5h1432_ops; | |
351 | ||
352 | struct dvb_frontend *s5h1432_attach(const struct s5h1432_config *config, | |
353 | struct i2c_adapter *i2c) | |
354 | { | |
355 | struct s5h1432_state *state = NULL; | |
356 | ||
357 | printk(KERN_INFO " Enter s5h1432_attach(). attach success!\n"); | |
358 | /* allocate memory for the internal state */ | |
359 | state = kmalloc(sizeof(struct s5h1432_state), GFP_KERNEL); | |
360 | if (state == NULL) | |
361 | goto error; | |
362 | ||
363 | /* setup the state */ | |
364 | state->config = config; | |
365 | state->i2c = i2c; | |
366 | state->current_modulation = QAM_16; | |
367 | state->inversion = state->config->inversion; | |
368 | ||
369 | /* create dvb_frontend */ | |
370 | memcpy(&state->frontend.ops, &s5h1432_ops, | |
371 | sizeof(struct dvb_frontend_ops)); | |
372 | ||
373 | state->frontend.demodulator_priv = state; | |
374 | ||
375 | return &state->frontend; | |
376 | ||
377 | error: | |
378 | kfree(state); | |
379 | return NULL; | |
380 | } | |
381 | EXPORT_SYMBOL(s5h1432_attach); | |
382 | ||
383 | static struct dvb_frontend_ops s5h1432_ops = { | |
384 | ||
385 | .info = { | |
bda7f4ee DH |
386 | .name = "Samsung s5h1432 DVB-T Frontend", |
387 | .type = FE_OFDM, | |
388 | .frequency_min = 177000000, | |
389 | .frequency_max = 858000000, | |
390 | .frequency_stepsize = 166666, | |
391 | .caps = FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | FE_CAN_FEC_3_4 | | |
392 | FE_CAN_FEC_5_6 | FE_CAN_FEC_7_8 | FE_CAN_FEC_AUTO | | |
393 | FE_CAN_QPSK | FE_CAN_QAM_16 | FE_CAN_QAM_64 | FE_CAN_QAM_AUTO | | |
394 | FE_CAN_HIERARCHY_AUTO | FE_CAN_GUARD_INTERVAL_AUTO | | |
395 | FE_CAN_TRANSMISSION_MODE_AUTO | FE_CAN_RECOVER}, | |
396 | ||
397 | .init = s5h1432_init, | |
398 | .sleep = s5h1432_sleep, | |
399 | .set_frontend = s5h1432_set_frontend, | |
400 | .get_frontend = s5h1432_get_frontend, | |
401 | .get_tune_settings = s5h1432_get_tune_settings, | |
402 | .read_status = s5h1432_read_status, | |
403 | .read_ber = s5h1432_read_ber, | |
47b75ec1 | 404 | .read_signal_strength = s5h1432_read_signal_strength, |
bda7f4ee DH |
405 | .read_snr = s5h1432_read_snr, |
406 | .read_ucblocks = s5h1432_read_ucblocks, | |
407 | .release = s5h1432_release, | |
47b75ec1 PB |
408 | }; |
409 | ||
410 | module_param(debug, int, 0644); | |
411 | MODULE_PARM_DESC(debug, "Enable verbose debug messages"); | |
412 | ||
413 | MODULE_DESCRIPTION("Samsung s5h1432 DVB-T Demodulator driver"); | |
414 | MODULE_AUTHOR("Bill Liu"); | |
415 | MODULE_LICENSE("GPL"); |