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[mirror_ubuntu-artful-kernel.git] / drivers / media / usb / dvb-usb-v2 / mxl111sf-gpio.c
1 /*
2 * mxl111sf-gpio.c - driver for the MaxLinear MXL111SF
3 *
4 * Copyright (C) 2010-2014 Michael Krufky <mkrufky@linuxtv.org>
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
17 #include "mxl111sf-gpio.h"
18 #include "mxl111sf-i2c.h"
19 #include "mxl111sf.h"
20
21 /* ------------------------------------------------------------------------- */
22
23 #define MXL_GPIO_MUX_REG_0 0x84
24 #define MXL_GPIO_MUX_REG_1 0x89
25 #define MXL_GPIO_MUX_REG_2 0x82
26
27 #define MXL_GPIO_DIR_INPUT 0
28 #define MXL_GPIO_DIR_OUTPUT 1
29
30
31 static int mxl111sf_set_gpo_state(struct mxl111sf_state *state, u8 pin, u8 val)
32 {
33 int ret;
34 u8 tmp;
35
36 mxl_debug_adv("(%d, %d)", pin, val);
37
38 if ((pin > 0) && (pin < 8)) {
39 ret = mxl111sf_read_reg(state, 0x19, &tmp);
40 if (mxl_fail(ret))
41 goto fail;
42 tmp &= ~(1 << (pin - 1));
43 tmp |= (val << (pin - 1));
44 ret = mxl111sf_write_reg(state, 0x19, tmp);
45 if (mxl_fail(ret))
46 goto fail;
47 } else if (pin <= 10) {
48 if (pin == 0)
49 pin += 7;
50 ret = mxl111sf_read_reg(state, 0x30, &tmp);
51 if (mxl_fail(ret))
52 goto fail;
53 tmp &= ~(1 << (pin - 3));
54 tmp |= (val << (pin - 3));
55 ret = mxl111sf_write_reg(state, 0x30, tmp);
56 if (mxl_fail(ret))
57 goto fail;
58 } else
59 ret = -EINVAL;
60 fail:
61 return ret;
62 }
63
64 static int mxl111sf_get_gpi_state(struct mxl111sf_state *state, u8 pin, u8 *val)
65 {
66 int ret;
67 u8 tmp;
68
69 mxl_debug("(0x%02x)", pin);
70
71 *val = 0;
72
73 switch (pin) {
74 case 0:
75 case 1:
76 case 2:
77 case 3:
78 ret = mxl111sf_read_reg(state, 0x23, &tmp);
79 if (mxl_fail(ret))
80 goto fail;
81 *val = (tmp >> (pin + 4)) & 0x01;
82 break;
83 case 4:
84 case 5:
85 case 6:
86 case 7:
87 ret = mxl111sf_read_reg(state, 0x2f, &tmp);
88 if (mxl_fail(ret))
89 goto fail;
90 *val = (tmp >> pin) & 0x01;
91 break;
92 case 8:
93 case 9:
94 case 10:
95 ret = mxl111sf_read_reg(state, 0x22, &tmp);
96 if (mxl_fail(ret))
97 goto fail;
98 *val = (tmp >> (pin - 3)) & 0x01;
99 break;
100 default:
101 return -EINVAL; /* invalid pin */
102 }
103 fail:
104 return ret;
105 }
106
107 struct mxl_gpio_cfg {
108 u8 pin;
109 u8 dir;
110 u8 val;
111 };
112
113 static int mxl111sf_config_gpio_pins(struct mxl111sf_state *state,
114 struct mxl_gpio_cfg *gpio_cfg)
115 {
116 int ret;
117 u8 tmp;
118
119 mxl_debug_adv("(%d, %d)", gpio_cfg->pin, gpio_cfg->dir);
120
121 switch (gpio_cfg->pin) {
122 case 0:
123 case 1:
124 case 2:
125 case 3:
126 ret = mxl111sf_read_reg(state, MXL_GPIO_MUX_REG_0, &tmp);
127 if (mxl_fail(ret))
128 goto fail;
129 tmp &= ~(1 << (gpio_cfg->pin + 4));
130 tmp |= (gpio_cfg->dir << (gpio_cfg->pin + 4));
131 ret = mxl111sf_write_reg(state, MXL_GPIO_MUX_REG_0, tmp);
132 if (mxl_fail(ret))
133 goto fail;
134 break;
135 case 4:
136 case 5:
137 case 6:
138 case 7:
139 ret = mxl111sf_read_reg(state, MXL_GPIO_MUX_REG_1, &tmp);
140 if (mxl_fail(ret))
141 goto fail;
142 tmp &= ~(1 << gpio_cfg->pin);
143 tmp |= (gpio_cfg->dir << gpio_cfg->pin);
144 ret = mxl111sf_write_reg(state, MXL_GPIO_MUX_REG_1, tmp);
145 if (mxl_fail(ret))
146 goto fail;
147 break;
148 case 8:
149 case 9:
150 case 10:
151 ret = mxl111sf_read_reg(state, MXL_GPIO_MUX_REG_2, &tmp);
152 if (mxl_fail(ret))
153 goto fail;
154 tmp &= ~(1 << (gpio_cfg->pin - 3));
155 tmp |= (gpio_cfg->dir << (gpio_cfg->pin - 3));
156 ret = mxl111sf_write_reg(state, MXL_GPIO_MUX_REG_2, tmp);
157 if (mxl_fail(ret))
158 goto fail;
159 break;
160 default:
161 return -EINVAL; /* invalid pin */
162 }
163
164 ret = (MXL_GPIO_DIR_OUTPUT == gpio_cfg->dir) ?
165 mxl111sf_set_gpo_state(state,
166 gpio_cfg->pin, gpio_cfg->val) :
167 mxl111sf_get_gpi_state(state,
168 gpio_cfg->pin, &gpio_cfg->val);
169 mxl_fail(ret);
170 fail:
171 return ret;
172 }
173
174 static int mxl111sf_hw_do_set_gpio(struct mxl111sf_state *state,
175 int gpio, int direction, int val)
176 {
177 struct mxl_gpio_cfg gpio_config = {
178 .pin = gpio,
179 .dir = direction,
180 .val = val,
181 };
182
183 mxl_debug("(%d, %d, %d)", gpio, direction, val);
184
185 return mxl111sf_config_gpio_pins(state, &gpio_config);
186 }
187
188 /* ------------------------------------------------------------------------- */
189
190 #define PIN_MUX_MPEG_MODE_MASK 0x40 /* 0x17 <6> */
191 #define PIN_MUX_MPEG_PAR_EN_MASK 0x01 /* 0x18 <0> */
192 #define PIN_MUX_MPEG_SER_EN_MASK 0x02 /* 0x18 <1> */
193 #define PIN_MUX_MPG_IN_MUX_MASK 0x80 /* 0x3D <7> */
194 #define PIN_MUX_BT656_ENABLE_MASK 0x04 /* 0x12 <2> */
195 #define PIN_MUX_I2S_ENABLE_MASK 0x40 /* 0x15 <6> */
196 #define PIN_MUX_SPI_MODE_MASK 0x10 /* 0x3D <4> */
197 #define PIN_MUX_MCLK_EN_CTRL_MASK 0x10 /* 0x82 <4> */
198 #define PIN_MUX_MPSYN_EN_CTRL_MASK 0x20 /* 0x82 <5> */
199 #define PIN_MUX_MDVAL_EN_CTRL_MASK 0x40 /* 0x82 <6> */
200 #define PIN_MUX_MPERR_EN_CTRL_MASK 0x80 /* 0x82 <7> */
201 #define PIN_MUX_MDAT_EN_0_MASK 0x10 /* 0x84 <4> */
202 #define PIN_MUX_MDAT_EN_1_MASK 0x20 /* 0x84 <5> */
203 #define PIN_MUX_MDAT_EN_2_MASK 0x40 /* 0x84 <6> */
204 #define PIN_MUX_MDAT_EN_3_MASK 0x80 /* 0x84 <7> */
205 #define PIN_MUX_MDAT_EN_4_MASK 0x10 /* 0x89 <4> */
206 #define PIN_MUX_MDAT_EN_5_MASK 0x20 /* 0x89 <5> */
207 #define PIN_MUX_MDAT_EN_6_MASK 0x40 /* 0x89 <6> */
208 #define PIN_MUX_MDAT_EN_7_MASK 0x80 /* 0x89 <7> */
209
210 int mxl111sf_config_pin_mux_modes(struct mxl111sf_state *state,
211 enum mxl111sf_mux_config pin_mux_config)
212 {
213 u8 r12, r15, r17, r18, r3D, r82, r84, r89;
214 int ret;
215
216 mxl_debug("(%d)", pin_mux_config);
217
218 ret = mxl111sf_read_reg(state, 0x17, &r17);
219 if (mxl_fail(ret))
220 goto fail;
221 ret = mxl111sf_read_reg(state, 0x18, &r18);
222 if (mxl_fail(ret))
223 goto fail;
224 ret = mxl111sf_read_reg(state, 0x12, &r12);
225 if (mxl_fail(ret))
226 goto fail;
227 ret = mxl111sf_read_reg(state, 0x15, &r15);
228 if (mxl_fail(ret))
229 goto fail;
230 ret = mxl111sf_read_reg(state, 0x82, &r82);
231 if (mxl_fail(ret))
232 goto fail;
233 ret = mxl111sf_read_reg(state, 0x84, &r84);
234 if (mxl_fail(ret))
235 goto fail;
236 ret = mxl111sf_read_reg(state, 0x89, &r89);
237 if (mxl_fail(ret))
238 goto fail;
239 ret = mxl111sf_read_reg(state, 0x3D, &r3D);
240 if (mxl_fail(ret))
241 goto fail;
242
243 switch (pin_mux_config) {
244 case PIN_MUX_TS_OUT_PARALLEL:
245 /* mpeg_mode = 1 */
246 r17 |= PIN_MUX_MPEG_MODE_MASK;
247 /* mpeg_par_en = 1 */
248 r18 |= PIN_MUX_MPEG_PAR_EN_MASK;
249 /* mpeg_ser_en = 0 */
250 r18 &= ~PIN_MUX_MPEG_SER_EN_MASK;
251 /* mpg_in_mux = 0 */
252 r3D &= ~PIN_MUX_MPG_IN_MUX_MASK;
253 /* bt656_enable = 0 */
254 r12 &= ~PIN_MUX_BT656_ENABLE_MASK;
255 /* i2s_enable = 0 */
256 r15 &= ~PIN_MUX_I2S_ENABLE_MASK;
257 /* spi_mode = 0 */
258 r3D &= ~PIN_MUX_SPI_MODE_MASK;
259 /* mclk_en_ctrl = 1 */
260 r82 |= PIN_MUX_MCLK_EN_CTRL_MASK;
261 /* mperr_en_ctrl = 1 */
262 r82 |= PIN_MUX_MPERR_EN_CTRL_MASK;
263 /* mdval_en_ctrl = 1 */
264 r82 |= PIN_MUX_MDVAL_EN_CTRL_MASK;
265 /* mpsyn_en_ctrl = 1 */
266 r82 |= PIN_MUX_MPSYN_EN_CTRL_MASK;
267 /* mdat_en_ctrl[3:0] = 0xF */
268 r84 |= 0xF0;
269 /* mdat_en_ctrl[7:4] = 0xF */
270 r89 |= 0xF0;
271 break;
272 case PIN_MUX_TS_OUT_SERIAL:
273 /* mpeg_mode = 1 */
274 r17 |= PIN_MUX_MPEG_MODE_MASK;
275 /* mpeg_par_en = 0 */
276 r18 &= ~PIN_MUX_MPEG_PAR_EN_MASK;
277 /* mpeg_ser_en = 1 */
278 r18 |= PIN_MUX_MPEG_SER_EN_MASK;
279 /* mpg_in_mux = 0 */
280 r3D &= ~PIN_MUX_MPG_IN_MUX_MASK;
281 /* bt656_enable = 0 */
282 r12 &= ~PIN_MUX_BT656_ENABLE_MASK;
283 /* i2s_enable = 0 */
284 r15 &= ~PIN_MUX_I2S_ENABLE_MASK;
285 /* spi_mode = 0 */
286 r3D &= ~PIN_MUX_SPI_MODE_MASK;
287 /* mclk_en_ctrl = 1 */
288 r82 |= PIN_MUX_MCLK_EN_CTRL_MASK;
289 /* mperr_en_ctrl = 1 */
290 r82 |= PIN_MUX_MPERR_EN_CTRL_MASK;
291 /* mdval_en_ctrl = 1 */
292 r82 |= PIN_MUX_MDVAL_EN_CTRL_MASK;
293 /* mpsyn_en_ctrl = 1 */
294 r82 |= PIN_MUX_MPSYN_EN_CTRL_MASK;
295 /* mdat_en_ctrl[3:0] = 0xF */
296 r84 |= 0xF0;
297 /* mdat_en_ctrl[7:4] = 0xF */
298 r89 |= 0xF0;
299 break;
300 case PIN_MUX_GPIO_MODE:
301 /* mpeg_mode = 0 */
302 r17 &= ~PIN_MUX_MPEG_MODE_MASK;
303 /* mpeg_par_en = 0 */
304 r18 &= ~PIN_MUX_MPEG_PAR_EN_MASK;
305 /* mpeg_ser_en = 0 */
306 r18 &= ~PIN_MUX_MPEG_SER_EN_MASK;
307 /* mpg_in_mux = 0 */
308 r3D &= ~PIN_MUX_MPG_IN_MUX_MASK;
309 /* bt656_enable = 0 */
310 r12 &= ~PIN_MUX_BT656_ENABLE_MASK;
311 /* i2s_enable = 0 */
312 r15 &= ~PIN_MUX_I2S_ENABLE_MASK;
313 /* spi_mode = 0 */
314 r3D &= ~PIN_MUX_SPI_MODE_MASK;
315 /* mclk_en_ctrl = 0 */
316 r82 &= ~PIN_MUX_MCLK_EN_CTRL_MASK;
317 /* mperr_en_ctrl = 0 */
318 r82 &= ~PIN_MUX_MPERR_EN_CTRL_MASK;
319 /* mdval_en_ctrl = 0 */
320 r82 &= ~PIN_MUX_MDVAL_EN_CTRL_MASK;
321 /* mpsyn_en_ctrl = 0 */
322 r82 &= ~PIN_MUX_MPSYN_EN_CTRL_MASK;
323 /* mdat_en_ctrl[3:0] = 0x0 */
324 r84 &= 0x0F;
325 /* mdat_en_ctrl[7:4] = 0x0 */
326 r89 &= 0x0F;
327 break;
328 case PIN_MUX_TS_SERIAL_IN_MODE_0:
329 /* mpeg_mode = 0 */
330 r17 &= ~PIN_MUX_MPEG_MODE_MASK;
331 /* mpeg_par_en = 0 */
332 r18 &= ~PIN_MUX_MPEG_PAR_EN_MASK;
333 /* mpeg_ser_en = 1 */
334 r18 |= PIN_MUX_MPEG_SER_EN_MASK;
335 /* mpg_in_mux = 0 */
336 r3D &= ~PIN_MUX_MPG_IN_MUX_MASK;
337 /* bt656_enable = 0 */
338 r12 &= ~PIN_MUX_BT656_ENABLE_MASK;
339 /* i2s_enable = 0 */
340 r15 &= ~PIN_MUX_I2S_ENABLE_MASK;
341 /* spi_mode = 0 */
342 r3D &= ~PIN_MUX_SPI_MODE_MASK;
343 /* mclk_en_ctrl = 0 */
344 r82 &= ~PIN_MUX_MCLK_EN_CTRL_MASK;
345 /* mperr_en_ctrl = 0 */
346 r82 &= ~PIN_MUX_MPERR_EN_CTRL_MASK;
347 /* mdval_en_ctrl = 0 */
348 r82 &= ~PIN_MUX_MDVAL_EN_CTRL_MASK;
349 /* mpsyn_en_ctrl = 0 */
350 r82 &= ~PIN_MUX_MPSYN_EN_CTRL_MASK;
351 /* mdat_en_ctrl[3:0] = 0x0 */
352 r84 &= 0x0F;
353 /* mdat_en_ctrl[7:4] = 0x0 */
354 r89 &= 0x0F;
355 break;
356 case PIN_MUX_TS_SERIAL_IN_MODE_1:
357 /* mpeg_mode = 0 */
358 r17 &= ~PIN_MUX_MPEG_MODE_MASK;
359 /* mpeg_par_en = 0 */
360 r18 &= ~PIN_MUX_MPEG_PAR_EN_MASK;
361 /* mpeg_ser_en = 1 */
362 r18 |= PIN_MUX_MPEG_SER_EN_MASK;
363 /* mpg_in_mux = 1 */
364 r3D |= PIN_MUX_MPG_IN_MUX_MASK;
365 /* bt656_enable = 0 */
366 r12 &= ~PIN_MUX_BT656_ENABLE_MASK;
367 /* i2s_enable = 0 */
368 r15 &= ~PIN_MUX_I2S_ENABLE_MASK;
369 /* spi_mode = 0 */
370 r3D &= ~PIN_MUX_SPI_MODE_MASK;
371 /* mclk_en_ctrl = 0 */
372 r82 &= ~PIN_MUX_MCLK_EN_CTRL_MASK;
373 /* mperr_en_ctrl = 0 */
374 r82 &= ~PIN_MUX_MPERR_EN_CTRL_MASK;
375 /* mdval_en_ctrl = 0 */
376 r82 &= ~PIN_MUX_MDVAL_EN_CTRL_MASK;
377 /* mpsyn_en_ctrl = 0 */
378 r82 &= ~PIN_MUX_MPSYN_EN_CTRL_MASK;
379 /* mdat_en_ctrl[3:0] = 0x0 */
380 r84 &= 0x0F;
381 /* mdat_en_ctrl[7:4] = 0x0 */
382 r89 &= 0x0F;
383 break;
384 case PIN_MUX_TS_SPI_IN_MODE_1:
385 /* mpeg_mode = 0 */
386 r17 &= ~PIN_MUX_MPEG_MODE_MASK;
387 /* mpeg_par_en = 0 */
388 r18 &= ~PIN_MUX_MPEG_PAR_EN_MASK;
389 /* mpeg_ser_en = 1 */
390 r18 |= PIN_MUX_MPEG_SER_EN_MASK;
391 /* mpg_in_mux = 1 */
392 r3D |= PIN_MUX_MPG_IN_MUX_MASK;
393 /* bt656_enable = 0 */
394 r12 &= ~PIN_MUX_BT656_ENABLE_MASK;
395 /* i2s_enable = 1 */
396 r15 |= PIN_MUX_I2S_ENABLE_MASK;
397 /* spi_mode = 1 */
398 r3D |= PIN_MUX_SPI_MODE_MASK;
399 /* mclk_en_ctrl = 0 */
400 r82 &= ~PIN_MUX_MCLK_EN_CTRL_MASK;
401 /* mperr_en_ctrl = 0 */
402 r82 &= ~PIN_MUX_MPERR_EN_CTRL_MASK;
403 /* mdval_en_ctrl = 0 */
404 r82 &= ~PIN_MUX_MDVAL_EN_CTRL_MASK;
405 /* mpsyn_en_ctrl = 0 */
406 r82 &= ~PIN_MUX_MPSYN_EN_CTRL_MASK;
407 /* mdat_en_ctrl[3:0] = 0x0 */
408 r84 &= 0x0F;
409 /* mdat_en_ctrl[7:4] = 0x0 */
410 r89 &= 0x0F;
411 break;
412 case PIN_MUX_TS_SPI_IN_MODE_0:
413 /* mpeg_mode = 0 */
414 r17 &= ~PIN_MUX_MPEG_MODE_MASK;
415 /* mpeg_par_en = 0 */
416 r18 &= ~PIN_MUX_MPEG_PAR_EN_MASK;
417 /* mpeg_ser_en = 1 */
418 r18 |= PIN_MUX_MPEG_SER_EN_MASK;
419 /* mpg_in_mux = 0 */
420 r3D &= ~PIN_MUX_MPG_IN_MUX_MASK;
421 /* bt656_enable = 0 */
422 r12 &= ~PIN_MUX_BT656_ENABLE_MASK;
423 /* i2s_enable = 1 */
424 r15 |= PIN_MUX_I2S_ENABLE_MASK;
425 /* spi_mode = 1 */
426 r3D |= PIN_MUX_SPI_MODE_MASK;
427 /* mclk_en_ctrl = 0 */
428 r82 &= ~PIN_MUX_MCLK_EN_CTRL_MASK;
429 /* mperr_en_ctrl = 0 */
430 r82 &= ~PIN_MUX_MPERR_EN_CTRL_MASK;
431 /* mdval_en_ctrl = 0 */
432 r82 &= ~PIN_MUX_MDVAL_EN_CTRL_MASK;
433 /* mpsyn_en_ctrl = 0 */
434 r82 &= ~PIN_MUX_MPSYN_EN_CTRL_MASK;
435 /* mdat_en_ctrl[3:0] = 0x0 */
436 r84 &= 0x0F;
437 /* mdat_en_ctrl[7:4] = 0x0 */
438 r89 &= 0x0F;
439 break;
440 case PIN_MUX_TS_PARALLEL_IN:
441 /* mpeg_mode = 0 */
442 r17 &= ~PIN_MUX_MPEG_MODE_MASK;
443 /* mpeg_par_en = 1 */
444 r18 |= PIN_MUX_MPEG_PAR_EN_MASK;
445 /* mpeg_ser_en = 0 */
446 r18 &= ~PIN_MUX_MPEG_SER_EN_MASK;
447 /* mpg_in_mux = 0 */
448 r3D &= ~PIN_MUX_MPG_IN_MUX_MASK;
449 /* bt656_enable = 0 */
450 r12 &= ~PIN_MUX_BT656_ENABLE_MASK;
451 /* i2s_enable = 0 */
452 r15 &= ~PIN_MUX_I2S_ENABLE_MASK;
453 /* spi_mode = 0 */
454 r3D &= ~PIN_MUX_SPI_MODE_MASK;
455 /* mclk_en_ctrl = 0 */
456 r82 &= ~PIN_MUX_MCLK_EN_CTRL_MASK;
457 /* mperr_en_ctrl = 0 */
458 r82 &= ~PIN_MUX_MPERR_EN_CTRL_MASK;
459 /* mdval_en_ctrl = 0 */
460 r82 &= ~PIN_MUX_MDVAL_EN_CTRL_MASK;
461 /* mpsyn_en_ctrl = 0 */
462 r82 &= ~PIN_MUX_MPSYN_EN_CTRL_MASK;
463 /* mdat_en_ctrl[3:0] = 0x0 */
464 r84 &= 0x0F;
465 /* mdat_en_ctrl[7:4] = 0x0 */
466 r89 &= 0x0F;
467 break;
468 case PIN_MUX_BT656_I2S_MODE:
469 /* mpeg_mode = 0 */
470 r17 &= ~PIN_MUX_MPEG_MODE_MASK;
471 /* mpeg_par_en = 0 */
472 r18 &= ~PIN_MUX_MPEG_PAR_EN_MASK;
473 /* mpeg_ser_en = 0 */
474 r18 &= ~PIN_MUX_MPEG_SER_EN_MASK;
475 /* mpg_in_mux = 0 */
476 r3D &= ~PIN_MUX_MPG_IN_MUX_MASK;
477 /* bt656_enable = 1 */
478 r12 |= PIN_MUX_BT656_ENABLE_MASK;
479 /* i2s_enable = 1 */
480 r15 |= PIN_MUX_I2S_ENABLE_MASK;
481 /* spi_mode = 0 */
482 r3D &= ~PIN_MUX_SPI_MODE_MASK;
483 /* mclk_en_ctrl = 0 */
484 r82 &= ~PIN_MUX_MCLK_EN_CTRL_MASK;
485 /* mperr_en_ctrl = 0 */
486 r82 &= ~PIN_MUX_MPERR_EN_CTRL_MASK;
487 /* mdval_en_ctrl = 0 */
488 r82 &= ~PIN_MUX_MDVAL_EN_CTRL_MASK;
489 /* mpsyn_en_ctrl = 0 */
490 r82 &= ~PIN_MUX_MPSYN_EN_CTRL_MASK;
491 /* mdat_en_ctrl[3:0] = 0x0 */
492 r84 &= 0x0F;
493 /* mdat_en_ctrl[7:4] = 0x0 */
494 r89 &= 0x0F;
495 break;
496 case PIN_MUX_DEFAULT:
497 default:
498 /* mpeg_mode = 1 */
499 r17 |= PIN_MUX_MPEG_MODE_MASK;
500 /* mpeg_par_en = 0 */
501 r18 &= ~PIN_MUX_MPEG_PAR_EN_MASK;
502 /* mpeg_ser_en = 0 */
503 r18 &= ~PIN_MUX_MPEG_SER_EN_MASK;
504 /* mpg_in_mux = 0 */
505 r3D &= ~PIN_MUX_MPG_IN_MUX_MASK;
506 /* bt656_enable = 0 */
507 r12 &= ~PIN_MUX_BT656_ENABLE_MASK;
508 /* i2s_enable = 0 */
509 r15 &= ~PIN_MUX_I2S_ENABLE_MASK;
510 /* spi_mode = 0 */
511 r3D &= ~PIN_MUX_SPI_MODE_MASK;
512 /* mclk_en_ctrl = 0 */
513 r82 &= ~PIN_MUX_MCLK_EN_CTRL_MASK;
514 /* mperr_en_ctrl = 0 */
515 r82 &= ~PIN_MUX_MPERR_EN_CTRL_MASK;
516 /* mdval_en_ctrl = 0 */
517 r82 &= ~PIN_MUX_MDVAL_EN_CTRL_MASK;
518 /* mpsyn_en_ctrl = 0 */
519 r82 &= ~PIN_MUX_MPSYN_EN_CTRL_MASK;
520 /* mdat_en_ctrl[3:0] = 0x0 */
521 r84 &= 0x0F;
522 /* mdat_en_ctrl[7:4] = 0x0 */
523 r89 &= 0x0F;
524 break;
525 }
526
527 ret = mxl111sf_write_reg(state, 0x17, r17);
528 if (mxl_fail(ret))
529 goto fail;
530 ret = mxl111sf_write_reg(state, 0x18, r18);
531 if (mxl_fail(ret))
532 goto fail;
533 ret = mxl111sf_write_reg(state, 0x12, r12);
534 if (mxl_fail(ret))
535 goto fail;
536 ret = mxl111sf_write_reg(state, 0x15, r15);
537 if (mxl_fail(ret))
538 goto fail;
539 ret = mxl111sf_write_reg(state, 0x82, r82);
540 if (mxl_fail(ret))
541 goto fail;
542 ret = mxl111sf_write_reg(state, 0x84, r84);
543 if (mxl_fail(ret))
544 goto fail;
545 ret = mxl111sf_write_reg(state, 0x89, r89);
546 if (mxl_fail(ret))
547 goto fail;
548 ret = mxl111sf_write_reg(state, 0x3D, r3D);
549 if (mxl_fail(ret))
550 goto fail;
551 fail:
552 return ret;
553 }
554
555 /* ------------------------------------------------------------------------- */
556
557 static int mxl111sf_hw_set_gpio(struct mxl111sf_state *state, int gpio, int val)
558 {
559 return mxl111sf_hw_do_set_gpio(state, gpio, MXL_GPIO_DIR_OUTPUT, val);
560 }
561
562 static int mxl111sf_hw_gpio_initialize(struct mxl111sf_state *state)
563 {
564 u8 gpioval = 0x07; /* write protect enabled, signal LEDs off */
565 int i, ret;
566
567 mxl_debug("()");
568
569 for (i = 3; i < 8; i++) {
570 ret = mxl111sf_hw_set_gpio(state, i, (gpioval >> i) & 0x01);
571 if (mxl_fail(ret))
572 break;
573 }
574
575 return ret;
576 }
577
578 #define PCA9534_I2C_ADDR (0x40 >> 1)
579 static int pca9534_set_gpio(struct mxl111sf_state *state, int gpio, int val)
580 {
581 u8 w[2] = { 1, 0 };
582 u8 r = 0;
583 struct i2c_msg msg[] = {
584 { .addr = PCA9534_I2C_ADDR,
585 .flags = 0, .buf = w, .len = 1 },
586 { .addr = PCA9534_I2C_ADDR,
587 .flags = I2C_M_RD, .buf = &r, .len = 1 },
588 };
589
590 mxl_debug("(%d, %d)", gpio, val);
591
592 /* read current GPIO levels from flip-flop */
593 i2c_transfer(&state->d->i2c_adap, msg, 2);
594
595 /* prepare write buffer with current GPIO levels */
596 msg[0].len = 2;
597 #if 0
598 w[0] = 1;
599 #endif
600 w[1] = r;
601
602 /* clear the desired GPIO */
603 w[1] &= ~(1 << gpio);
604
605 /* set the desired GPIO value */
606 w[1] |= ((val ? 1 : 0) << gpio);
607
608 /* write new GPIO levels to flip-flop */
609 i2c_transfer(&state->d->i2c_adap, &msg[0], 1);
610
611 return 0;
612 }
613
614 static int pca9534_init_port_expander(struct mxl111sf_state *state)
615 {
616 u8 w[2] = { 1, 0x07 }; /* write protect enabled, signal LEDs off */
617
618 struct i2c_msg msg = {
619 .addr = PCA9534_I2C_ADDR,
620 .flags = 0, .buf = w, .len = 2
621 };
622
623 mxl_debug("()");
624
625 i2c_transfer(&state->d->i2c_adap, &msg, 1);
626
627 /* configure all pins as outputs */
628 w[0] = 3;
629 w[1] = 0;
630
631 i2c_transfer(&state->d->i2c_adap, &msg, 1);
632
633 return 0;
634 }
635
636 int mxl111sf_set_gpio(struct mxl111sf_state *state, int gpio, int val)
637 {
638 mxl_debug("(%d, %d)", gpio, val);
639
640 switch (state->gpio_port_expander) {
641 default:
642 mxl_printk(KERN_ERR,
643 "gpio_port_expander undefined, assuming PCA9534");
644 /* fall-thru */
645 case mxl111sf_PCA9534:
646 return pca9534_set_gpio(state, gpio, val);
647 case mxl111sf_gpio_hw:
648 return mxl111sf_hw_set_gpio(state, gpio, val);
649 }
650 }
651
652 static int mxl111sf_probe_port_expander(struct mxl111sf_state *state)
653 {
654 int ret;
655 u8 w = 1;
656 u8 r = 0;
657 struct i2c_msg msg[] = {
658 { .flags = 0, .buf = &w, .len = 1 },
659 { .flags = I2C_M_RD, .buf = &r, .len = 1 },
660 };
661
662 mxl_debug("()");
663
664 msg[0].addr = 0x70 >> 1;
665 msg[1].addr = 0x70 >> 1;
666
667 /* read current GPIO levels from flip-flop */
668 ret = i2c_transfer(&state->d->i2c_adap, msg, 2);
669 if (ret == 2) {
670 state->port_expander_addr = msg[0].addr;
671 state->gpio_port_expander = mxl111sf_PCA9534;
672 mxl_debug("found port expander at 0x%02x",
673 state->port_expander_addr);
674 return 0;
675 }
676
677 msg[0].addr = 0x40 >> 1;
678 msg[1].addr = 0x40 >> 1;
679
680 ret = i2c_transfer(&state->d->i2c_adap, msg, 2);
681 if (ret == 2) {
682 state->port_expander_addr = msg[0].addr;
683 state->gpio_port_expander = mxl111sf_PCA9534;
684 mxl_debug("found port expander at 0x%02x",
685 state->port_expander_addr);
686 return 0;
687 }
688 state->port_expander_addr = 0xff;
689 state->gpio_port_expander = mxl111sf_gpio_hw;
690 mxl_debug("using hardware gpio");
691 return 0;
692 }
693
694 int mxl111sf_init_port_expander(struct mxl111sf_state *state)
695 {
696 mxl_debug("()");
697
698 if (0x00 == state->port_expander_addr)
699 mxl111sf_probe_port_expander(state);
700
701 switch (state->gpio_port_expander) {
702 default:
703 mxl_printk(KERN_ERR,
704 "gpio_port_expander undefined, assuming PCA9534");
705 /* fall-thru */
706 case mxl111sf_PCA9534:
707 return pca9534_init_port_expander(state);
708 case mxl111sf_gpio_hw:
709 return mxl111sf_hw_gpio_initialize(state);
710 }
711 }
712
713 /* ------------------------------------------------------------------------ */
714
715 int mxl111sf_gpio_mode_switch(struct mxl111sf_state *state, unsigned int mode)
716 {
717 /* GPO:
718 * 3 - ATSC/MH# | 1 = ATSC transport, 0 = MH transport | default 0
719 * 4 - ATSC_RST## | 1 = ATSC enable, 0 = ATSC Reset | default 0
720 * 5 - ATSC_EN | 1 = ATSC power enable, 0 = ATSC power off | default 0
721 * 6 - MH_RESET# | 1 = MH enable, 0 = MH Reset | default 0
722 * 7 - MH_EN | 1 = MH power enable, 0 = MH power off | default 0
723 */
724 mxl_debug("(%d)", mode);
725
726 switch (mode) {
727 case MXL111SF_GPIO_MOD_MH:
728 mxl111sf_set_gpio(state, 4, 0);
729 mxl111sf_set_gpio(state, 5, 0);
730 msleep(50);
731 mxl111sf_set_gpio(state, 7, 1);
732 msleep(50);
733 mxl111sf_set_gpio(state, 6, 1);
734 msleep(50);
735
736 mxl111sf_set_gpio(state, 3, 0);
737 break;
738 case MXL111SF_GPIO_MOD_ATSC:
739 mxl111sf_set_gpio(state, 6, 0);
740 mxl111sf_set_gpio(state, 7, 0);
741 msleep(50);
742 mxl111sf_set_gpio(state, 5, 1);
743 msleep(50);
744 mxl111sf_set_gpio(state, 4, 1);
745 msleep(50);
746 mxl111sf_set_gpio(state, 3, 1);
747 break;
748 default: /* DVBT / STANDBY */
749 mxl111sf_init_port_expander(state);
750 break;
751 }
752 return 0;
753 }
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