1 /*
2    cx231xx_avcore.c - driver for Conexant Cx23100/101/102
3 		      USB video capture devices
4 
5    Copyright (C) 2008 <srinivasa.deevi at conexant dot com>
6 
7    This program contains the specific code to control the avdecoder chip and
8    other related usb control functions for cx231xx based chipset.
9 
10    This program is free software; you can redistribute it and/or modify
11    it under the terms of the GNU General Public License as published by
12    the Free Software Foundation; either version 2 of the License, or
13    (at your option) any later version.
14 
15    This program is distributed in the hope that it will be useful,
16    but WITHOUT ANY WARRANTY; without even the implied warranty of
17    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
18    GNU General Public License for more details.
19 
20    You should have received a copy of the GNU General Public License
21    along with this program; if not, write to the Free Software
22    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
23  */
24 
25 #include "cx231xx.h"
26 #include <linux/init.h>
27 #include <linux/list.h>
28 #include <linux/module.h>
29 #include <linux/kernel.h>
30 #include <linux/bitmap.h>
31 #include <linux/i2c.h>
32 #include <linux/mm.h>
33 #include <linux/mutex.h>
34 #include <media/tuner.h>
35 
36 #include <media/v4l2-common.h>
37 #include <media/v4l2-ioctl.h>
38 
39 #include "cx231xx-dif.h"
40 
41 #define TUNER_MODE_FM_RADIO 0
42 /******************************************************************************
43 			-: BLOCK ARRANGEMENT :-
44 	I2S block ----------------------|
45 	[I2S audio]			|
46 					|
47 	Analog Front End --> Direct IF -|-> Cx25840 --> Audio
48 	[video & audio]			|   [Audio]
49 					|
50 					|-> Cx25840 --> Video
51 					    [Video]
52 
53 *******************************************************************************/
54 /******************************************************************************
55  *                    VERVE REGISTER                                          *
56  *									      *
57  ******************************************************************************/
58 static int verve_write_byte(struct cx231xx *dev, u8 saddr, u8 data)
59 {
60 	return cx231xx_write_i2c_data(dev, VERVE_I2C_ADDRESS,
61 					saddr, 1, data, 1);
62 }
63 
64 static int verve_read_byte(struct cx231xx *dev, u8 saddr, u8 *data)
65 {
66 	int status;
67 	u32 temp = 0;
68 
69 	status = cx231xx_read_i2c_data(dev, VERVE_I2C_ADDRESS,
70 					saddr, 1, &temp, 1);
71 	*data = (u8) temp;
72 	return status;
73 }
74 void initGPIO(struct cx231xx *dev)
75 {
76 	u32 _gpio_direction = 0;
77 	u32 value = 0;
78 	u8 val = 0;
79 
80 	_gpio_direction = _gpio_direction & 0xFC0003FF;
81 	_gpio_direction = _gpio_direction | 0x03FDFC00;
82 	cx231xx_send_gpio_cmd(dev, _gpio_direction, (u8 *)&value, 4, 0, 0);
83 
84 	verve_read_byte(dev, 0x07, &val);
85 	dev_dbg(dev->dev, "verve_read_byte address0x07=0x%x\n", val);
86 	verve_write_byte(dev, 0x07, 0xF4);
87 	verve_read_byte(dev, 0x07, &val);
88 	dev_dbg(dev->dev, "verve_read_byte address0x07=0x%x\n", val);
89 
90 	cx231xx_capture_start(dev, 1, Vbi);
91 
92 	cx231xx_mode_register(dev, EP_MODE_SET, 0x0500FE00);
93 	cx231xx_mode_register(dev, GBULK_BIT_EN, 0xFFFDFFFF);
94 
95 }
96 void uninitGPIO(struct cx231xx *dev)
97 {
98 	u8 value[4] = { 0, 0, 0, 0 };
99 
100 	cx231xx_capture_start(dev, 0, Vbi);
101 	verve_write_byte(dev, 0x07, 0x14);
102 	cx231xx_write_ctrl_reg(dev, VRT_SET_REGISTER,
103 			0x68, value, 4);
104 }
105 
106 /******************************************************************************
107  *                    A F E - B L O C K    C O N T R O L   functions          *
108  * 				[ANALOG FRONT END]			      *
109  ******************************************************************************/
110 static int afe_write_byte(struct cx231xx *dev, u16 saddr, u8 data)
111 {
112 	return cx231xx_write_i2c_data(dev, AFE_DEVICE_ADDRESS,
113 					saddr, 2, data, 1);
114 }
115 
116 static int afe_read_byte(struct cx231xx *dev, u16 saddr, u8 *data)
117 {
118 	int status;
119 	u32 temp = 0;
120 
121 	status = cx231xx_read_i2c_data(dev, AFE_DEVICE_ADDRESS,
122 					saddr, 2, &temp, 1);
123 	*data = (u8) temp;
124 	return status;
125 }
126 
127 int cx231xx_afe_init_super_block(struct cx231xx *dev, u32 ref_count)
128 {
129 	int status = 0;
130 	u8 temp = 0;
131 	u8 afe_power_status = 0;
132 	int i = 0;
133 
134 	/* super block initialize */
135 	temp = (u8) (ref_count & 0xff);
136 	status = afe_write_byte(dev, SUP_BLK_TUNE2, temp);
137 	if (status < 0)
138 		return status;
139 
140 	status = afe_read_byte(dev, SUP_BLK_TUNE2, &afe_power_status);
141 	if (status < 0)
142 		return status;
143 
144 	temp = (u8) ((ref_count & 0x300) >> 8);
145 	temp |= 0x40;
146 	status = afe_write_byte(dev, SUP_BLK_TUNE1, temp);
147 	if (status < 0)
148 		return status;
149 
150 	status = afe_write_byte(dev, SUP_BLK_PLL2, 0x0f);
151 	if (status < 0)
152 		return status;
153 
154 	/* enable pll     */
155 	while (afe_power_status != 0x18) {
156 		status = afe_write_byte(dev, SUP_BLK_PWRDN, 0x18);
157 		if (status < 0) {
158 			dev_dbg(dev->dev,
159 				"%s: Init Super Block failed in send cmd\n",
160 				__func__);
161 			break;
162 		}
163 
164 		status = afe_read_byte(dev, SUP_BLK_PWRDN, &afe_power_status);
165 		afe_power_status &= 0xff;
166 		if (status < 0) {
167 			dev_dbg(dev->dev,
168 				"%s: Init Super Block failed in receive cmd\n",
169 				__func__);
170 			break;
171 		}
172 		i++;
173 		if (i == 10) {
174 			dev_dbg(dev->dev,
175 				"%s: Init Super Block force break in loop !!!!\n",
176 				__func__);
177 			status = -1;
178 			break;
179 		}
180 	}
181 
182 	if (status < 0)
183 		return status;
184 
185 	/* start tuning filter */
186 	status = afe_write_byte(dev, SUP_BLK_TUNE3, 0x40);
187 	if (status < 0)
188 		return status;
189 
190 	msleep(5);
191 
192 	/* exit tuning */
193 	status = afe_write_byte(dev, SUP_BLK_TUNE3, 0x00);
194 
195 	return status;
196 }
197 
198 int cx231xx_afe_init_channels(struct cx231xx *dev)
199 {
200 	int status = 0;
201 
202 	/* power up all 3 channels, clear pd_buffer */
203 	status = afe_write_byte(dev, ADC_PWRDN_CLAMP_CH1, 0x00);
204 	status = afe_write_byte(dev, ADC_PWRDN_CLAMP_CH2, 0x00);
205 	status = afe_write_byte(dev, ADC_PWRDN_CLAMP_CH3, 0x00);
206 
207 	/* Enable quantizer calibration */
208 	status = afe_write_byte(dev, ADC_COM_QUANT, 0x02);
209 
210 	/* channel initialize, force modulator (fb) reset */
211 	status = afe_write_byte(dev, ADC_FB_FRCRST_CH1, 0x17);
212 	status = afe_write_byte(dev, ADC_FB_FRCRST_CH2, 0x17);
213 	status = afe_write_byte(dev, ADC_FB_FRCRST_CH3, 0x17);
214 
215 	/* start quantilizer calibration  */
216 	status = afe_write_byte(dev, ADC_CAL_ATEST_CH1, 0x10);
217 	status = afe_write_byte(dev, ADC_CAL_ATEST_CH2, 0x10);
218 	status = afe_write_byte(dev, ADC_CAL_ATEST_CH3, 0x10);
219 	msleep(5);
220 
221 	/* exit modulator (fb) reset */
222 	status = afe_write_byte(dev, ADC_FB_FRCRST_CH1, 0x07);
223 	status = afe_write_byte(dev, ADC_FB_FRCRST_CH2, 0x07);
224 	status = afe_write_byte(dev, ADC_FB_FRCRST_CH3, 0x07);
225 
226 	/* enable the pre_clamp in each channel for single-ended input */
227 	status = afe_write_byte(dev, ADC_NTF_PRECLMP_EN_CH1, 0xf0);
228 	status = afe_write_byte(dev, ADC_NTF_PRECLMP_EN_CH2, 0xf0);
229 	status = afe_write_byte(dev, ADC_NTF_PRECLMP_EN_CH3, 0xf0);
230 
231 	/* use diode instead of resistor, so set term_en to 0, res_en to 0  */
232 	status = cx231xx_reg_mask_write(dev, AFE_DEVICE_ADDRESS, 8,
233 				   ADC_QGAIN_RES_TRM_CH1, 3, 7, 0x00);
234 	status = cx231xx_reg_mask_write(dev, AFE_DEVICE_ADDRESS, 8,
235 				   ADC_QGAIN_RES_TRM_CH2, 3, 7, 0x00);
236 	status = cx231xx_reg_mask_write(dev, AFE_DEVICE_ADDRESS, 8,
237 				   ADC_QGAIN_RES_TRM_CH3, 3, 7, 0x00);
238 
239 	/* dynamic element matching off */
240 	status = afe_write_byte(dev, ADC_DCSERVO_DEM_CH1, 0x03);
241 	status = afe_write_byte(dev, ADC_DCSERVO_DEM_CH2, 0x03);
242 	status = afe_write_byte(dev, ADC_DCSERVO_DEM_CH3, 0x03);
243 
244 	return status;
245 }
246 
247 int cx231xx_afe_setup_AFE_for_baseband(struct cx231xx *dev)
248 {
249 	u8 c_value = 0;
250 	int status = 0;
251 
252 	status = afe_read_byte(dev, ADC_PWRDN_CLAMP_CH2, &c_value);
253 	c_value &= (~(0x50));
254 	status = afe_write_byte(dev, ADC_PWRDN_CLAMP_CH2, c_value);
255 
256 	return status;
257 }
258 
259 /*
260 	The Analog Front End in Cx231xx has 3 channels. These
261 	channels are used to share between different inputs
262 	like tuner, s-video and composite inputs.
263 
264 	channel 1 ----- pin 1  to pin4(in reg is 1-4)
265 	channel 2 ----- pin 5  to pin8(in reg is 5-8)
266 	channel 3 ----- pin 9 to pin 12(in reg is 9-11)
267 */
268 int cx231xx_afe_set_input_mux(struct cx231xx *dev, u32 input_mux)
269 {
270 	u8 ch1_setting = (u8) input_mux;
271 	u8 ch2_setting = (u8) (input_mux >> 8);
272 	u8 ch3_setting = (u8) (input_mux >> 16);
273 	int status = 0;
274 	u8 value = 0;
275 
276 	if (ch1_setting != 0) {
277 		status = afe_read_byte(dev, ADC_INPUT_CH1, &value);
278 		value &= ~INPUT_SEL_MASK;
279 		value |= (ch1_setting - 1) << 4;
280 		value &= 0xff;
281 		status = afe_write_byte(dev, ADC_INPUT_CH1, value);
282 	}
283 
284 	if (ch2_setting != 0) {
285 		status = afe_read_byte(dev, ADC_INPUT_CH2, &value);
286 		value &= ~INPUT_SEL_MASK;
287 		value |= (ch2_setting - 1) << 4;
288 		value &= 0xff;
289 		status = afe_write_byte(dev, ADC_INPUT_CH2, value);
290 	}
291 
292 	/* For ch3_setting, the value to put in the register is
293 	   7 less than the input number */
294 	if (ch3_setting != 0) {
295 		status = afe_read_byte(dev, ADC_INPUT_CH3, &value);
296 		value &= ~INPUT_SEL_MASK;
297 		value |= (ch3_setting - 1) << 4;
298 		value &= 0xff;
299 		status = afe_write_byte(dev, ADC_INPUT_CH3, value);
300 	}
301 
302 	return status;
303 }
304 
305 int cx231xx_afe_set_mode(struct cx231xx *dev, enum AFE_MODE mode)
306 {
307 	int status = 0;
308 
309 	/*
310 	* FIXME: We need to implement the AFE code for LOW IF and for HI IF.
311 	* Currently, only baseband works.
312 	*/
313 
314 	switch (mode) {
315 	case AFE_MODE_LOW_IF:
316 		cx231xx_Setup_AFE_for_LowIF(dev);
317 		break;
318 	case AFE_MODE_BASEBAND:
319 		status = cx231xx_afe_setup_AFE_for_baseband(dev);
320 		break;
321 	case AFE_MODE_EU_HI_IF:
322 		/* SetupAFEforEuHiIF(); */
323 		break;
324 	case AFE_MODE_US_HI_IF:
325 		/* SetupAFEforUsHiIF(); */
326 		break;
327 	case AFE_MODE_JAPAN_HI_IF:
328 		/* SetupAFEforJapanHiIF(); */
329 		break;
330 	}
331 
332 	if ((mode != dev->afe_mode) &&
333 		(dev->video_input == CX231XX_VMUX_TELEVISION))
334 		status = cx231xx_afe_adjust_ref_count(dev,
335 						     CX231XX_VMUX_TELEVISION);
336 
337 	dev->afe_mode = mode;
338 
339 	return status;
340 }
341 
342 int cx231xx_afe_update_power_control(struct cx231xx *dev,
343 					enum AV_MODE avmode)
344 {
345 	u8 afe_power_status = 0;
346 	int status = 0;
347 
348 	switch (dev->model) {
349 	case CX231XX_BOARD_CNXT_CARRAERA:
350 	case CX231XX_BOARD_CNXT_RDE_250:
351 	case CX231XX_BOARD_CNXT_SHELBY:
352 	case CX231XX_BOARD_CNXT_RDU_250:
353 	case CX231XX_BOARD_CNXT_RDE_253S:
354 	case CX231XX_BOARD_CNXT_RDU_253S:
355 	case CX231XX_BOARD_CNXT_VIDEO_GRABBER:
356 	case CX231XX_BOARD_HAUPPAUGE_EXETER:
357 	case CX231XX_BOARD_HAUPPAUGE_930C_HD_1113xx:
358 	case CX231XX_BOARD_HAUPPAUGE_USBLIVE2:
359 	case CX231XX_BOARD_PV_PLAYTV_USB_HYBRID:
360 	case CX231XX_BOARD_HAUPPAUGE_USB2_FM_PAL:
361 	case CX231XX_BOARD_HAUPPAUGE_USB2_FM_NTSC:
362 	case CX231XX_BOARD_OTG102:
363 		if (avmode == POLARIS_AVMODE_ANALOGT_TV) {
364 			while (afe_power_status != (FLD_PWRDN_TUNING_BIAS |
365 						FLD_PWRDN_ENABLE_PLL)) {
366 				status = afe_write_byte(dev, SUP_BLK_PWRDN,
367 							FLD_PWRDN_TUNING_BIAS |
368 							FLD_PWRDN_ENABLE_PLL);
369 				status |= afe_read_byte(dev, SUP_BLK_PWRDN,
370 							&afe_power_status);
371 				if (status < 0)
372 					break;
373 			}
374 
375 			status = afe_write_byte(dev, ADC_PWRDN_CLAMP_CH1,
376 							0x00);
377 			status |= afe_write_byte(dev, ADC_PWRDN_CLAMP_CH2,
378 							0x00);
379 			status |= afe_write_byte(dev, ADC_PWRDN_CLAMP_CH3,
380 							0x00);
381 		} else if (avmode == POLARIS_AVMODE_DIGITAL) {
382 			status = afe_write_byte(dev, ADC_PWRDN_CLAMP_CH1,
383 							0x70);
384 			status |= afe_write_byte(dev, ADC_PWRDN_CLAMP_CH2,
385 							0x70);
386 			status |= afe_write_byte(dev, ADC_PWRDN_CLAMP_CH3,
387 							0x70);
388 
389 			status |= afe_read_byte(dev, SUP_BLK_PWRDN,
390 						  &afe_power_status);
391 			afe_power_status |= FLD_PWRDN_PD_BANDGAP |
392 						FLD_PWRDN_PD_BIAS |
393 						FLD_PWRDN_PD_TUNECK;
394 			status |= afe_write_byte(dev, SUP_BLK_PWRDN,
395 						   afe_power_status);
396 		} else if (avmode == POLARIS_AVMODE_ENXTERNAL_AV) {
397 			while (afe_power_status != (FLD_PWRDN_TUNING_BIAS |
398 						FLD_PWRDN_ENABLE_PLL)) {
399 				status = afe_write_byte(dev, SUP_BLK_PWRDN,
400 							FLD_PWRDN_TUNING_BIAS |
401 							FLD_PWRDN_ENABLE_PLL);
402 				status |= afe_read_byte(dev, SUP_BLK_PWRDN,
403 							&afe_power_status);
404 				if (status < 0)
405 					break;
406 			}
407 
408 			status |= afe_write_byte(dev, ADC_PWRDN_CLAMP_CH1,
409 						0x00);
410 			status |= afe_write_byte(dev, ADC_PWRDN_CLAMP_CH2,
411 						0x00);
412 			status |= afe_write_byte(dev, ADC_PWRDN_CLAMP_CH3,
413 						0x00);
414 		} else {
415 			dev_dbg(dev->dev, "Invalid AV mode input\n");
416 			status = -1;
417 		}
418 		break;
419 	default:
420 		if (avmode == POLARIS_AVMODE_ANALOGT_TV) {
421 			while (afe_power_status != (FLD_PWRDN_TUNING_BIAS |
422 						FLD_PWRDN_ENABLE_PLL)) {
423 				status = afe_write_byte(dev, SUP_BLK_PWRDN,
424 							FLD_PWRDN_TUNING_BIAS |
425 							FLD_PWRDN_ENABLE_PLL);
426 				status |= afe_read_byte(dev, SUP_BLK_PWRDN,
427 							&afe_power_status);
428 				if (status < 0)
429 					break;
430 			}
431 
432 			status |= afe_write_byte(dev, ADC_PWRDN_CLAMP_CH1,
433 							0x40);
434 			status |= afe_write_byte(dev, ADC_PWRDN_CLAMP_CH2,
435 							0x40);
436 			status |= afe_write_byte(dev, ADC_PWRDN_CLAMP_CH3,
437 							0x00);
438 		} else if (avmode == POLARIS_AVMODE_DIGITAL) {
439 			status = afe_write_byte(dev, ADC_PWRDN_CLAMP_CH1,
440 							0x70);
441 			status |= afe_write_byte(dev, ADC_PWRDN_CLAMP_CH2,
442 							0x70);
443 			status |= afe_write_byte(dev, ADC_PWRDN_CLAMP_CH3,
444 							0x70);
445 
446 			status |= afe_read_byte(dev, SUP_BLK_PWRDN,
447 						       &afe_power_status);
448 			afe_power_status |= FLD_PWRDN_PD_BANDGAP |
449 						FLD_PWRDN_PD_BIAS |
450 						FLD_PWRDN_PD_TUNECK;
451 			status |= afe_write_byte(dev, SUP_BLK_PWRDN,
452 							afe_power_status);
453 		} else if (avmode == POLARIS_AVMODE_ENXTERNAL_AV) {
454 			while (afe_power_status != (FLD_PWRDN_TUNING_BIAS |
455 						FLD_PWRDN_ENABLE_PLL)) {
456 				status = afe_write_byte(dev, SUP_BLK_PWRDN,
457 							FLD_PWRDN_TUNING_BIAS |
458 							FLD_PWRDN_ENABLE_PLL);
459 				status |= afe_read_byte(dev, SUP_BLK_PWRDN,
460 							&afe_power_status);
461 				if (status < 0)
462 					break;
463 			}
464 
465 			status |= afe_write_byte(dev, ADC_PWRDN_CLAMP_CH1,
466 							0x00);
467 			status |= afe_write_byte(dev, ADC_PWRDN_CLAMP_CH2,
468 							0x00);
469 			status |= afe_write_byte(dev, ADC_PWRDN_CLAMP_CH3,
470 							0x40);
471 		} else {
472 			dev_dbg(dev->dev, "Invalid AV mode input\n");
473 			status = -1;
474 		}
475 	}			/* switch  */
476 
477 	return status;
478 }
479 
480 int cx231xx_afe_adjust_ref_count(struct cx231xx *dev, u32 video_input)
481 {
482 	u8 input_mode = 0;
483 	u8 ntf_mode = 0;
484 	int status = 0;
485 
486 	dev->video_input = video_input;
487 
488 	if (video_input == CX231XX_VMUX_TELEVISION) {
489 		status = afe_read_byte(dev, ADC_INPUT_CH3, &input_mode);
490 		status = afe_read_byte(dev, ADC_NTF_PRECLMP_EN_CH3,
491 					&ntf_mode);
492 	} else {
493 		status = afe_read_byte(dev, ADC_INPUT_CH1, &input_mode);
494 		status = afe_read_byte(dev, ADC_NTF_PRECLMP_EN_CH1,
495 					&ntf_mode);
496 	}
497 
498 	input_mode = (ntf_mode & 0x3) | ((input_mode & 0x6) << 1);
499 
500 	switch (input_mode) {
501 	case SINGLE_ENDED:
502 		dev->afe_ref_count = 0x23C;
503 		break;
504 	case LOW_IF:
505 		dev->afe_ref_count = 0x24C;
506 		break;
507 	case EU_IF:
508 		dev->afe_ref_count = 0x258;
509 		break;
510 	case US_IF:
511 		dev->afe_ref_count = 0x260;
512 		break;
513 	default:
514 		break;
515 	}
516 
517 	status = cx231xx_afe_init_super_block(dev, dev->afe_ref_count);
518 
519 	return status;
520 }
521 
522 /******************************************************************************
523  *     V I D E O / A U D I O    D E C O D E R    C O N T R O L   functions    *
524  ******************************************************************************/
525 static int vid_blk_write_byte(struct cx231xx *dev, u16 saddr, u8 data)
526 {
527 	return cx231xx_write_i2c_data(dev, VID_BLK_I2C_ADDRESS,
528 					saddr, 2, data, 1);
529 }
530 
531 static int vid_blk_read_byte(struct cx231xx *dev, u16 saddr, u8 *data)
532 {
533 	int status;
534 	u32 temp = 0;
535 
536 	status = cx231xx_read_i2c_data(dev, VID_BLK_I2C_ADDRESS,
537 					saddr, 2, &temp, 1);
538 	*data = (u8) temp;
539 	return status;
540 }
541 
542 static int vid_blk_write_word(struct cx231xx *dev, u16 saddr, u32 data)
543 {
544 	return cx231xx_write_i2c_data(dev, VID_BLK_I2C_ADDRESS,
545 					saddr, 2, data, 4);
546 }
547 
548 static int vid_blk_read_word(struct cx231xx *dev, u16 saddr, u32 *data)
549 {
550 	return cx231xx_read_i2c_data(dev, VID_BLK_I2C_ADDRESS,
551 					saddr, 2, data, 4);
552 }
553 int cx231xx_check_fw(struct cx231xx *dev)
554 {
555 	u8 temp = 0;
556 	int status = 0;
557 	status = vid_blk_read_byte(dev, DL_CTL_ADDRESS_LOW, &temp);
558 	if (status < 0)
559 		return status;
560 	else
561 		return temp;
562 
563 }
564 
565 int cx231xx_set_video_input_mux(struct cx231xx *dev, u8 input)
566 {
567 	int status = 0;
568 
569 	switch (INPUT(input)->type) {
570 	case CX231XX_VMUX_COMPOSITE1:
571 	case CX231XX_VMUX_SVIDEO:
572 		if ((dev->current_pcb_config.type == USB_BUS_POWER) &&
573 		    (dev->power_mode != POLARIS_AVMODE_ENXTERNAL_AV)) {
574 			/* External AV */
575 			status = cx231xx_set_power_mode(dev,
576 					POLARIS_AVMODE_ENXTERNAL_AV);
577 			if (status < 0) {
578 				dev_err(dev->dev,
579 					"%s: Failed to set Power - errCode [%d]!\n",
580 					__func__, status);
581 				return status;
582 			}
583 		}
584 		status = cx231xx_set_decoder_video_input(dev,
585 							 INPUT(input)->type,
586 							 INPUT(input)->vmux);
587 		break;
588 	case CX231XX_VMUX_TELEVISION:
589 	case CX231XX_VMUX_CABLE:
590 		if ((dev->current_pcb_config.type == USB_BUS_POWER) &&
591 		    (dev->power_mode != POLARIS_AVMODE_ANALOGT_TV)) {
592 			/* Tuner */
593 			status = cx231xx_set_power_mode(dev,
594 						POLARIS_AVMODE_ANALOGT_TV);
595 			if (status < 0) {
596 				dev_err(dev->dev,
597 					"%s: Failed to set Power - errCode [%d]!\n",
598 					__func__, status);
599 				return status;
600 			}
601 		}
602 		if (dev->tuner_type == TUNER_NXP_TDA18271)
603 			status = cx231xx_set_decoder_video_input(dev,
604 							CX231XX_VMUX_TELEVISION,
605 							INPUT(input)->vmux);
606 		else
607 			status = cx231xx_set_decoder_video_input(dev,
608 							CX231XX_VMUX_COMPOSITE1,
609 							INPUT(input)->vmux);
610 
611 		break;
612 	default:
613 		dev_err(dev->dev, "%s: Unknown Input %d !\n",
614 			__func__, INPUT(input)->type);
615 		break;
616 	}
617 
618 	/* save the selection */
619 	dev->video_input = input;
620 
621 	return status;
622 }
623 
624 int cx231xx_set_decoder_video_input(struct cx231xx *dev,
625 				u8 pin_type, u8 input)
626 {
627 	int status = 0;
628 	u32 value = 0;
629 
630 	if (pin_type != dev->video_input) {
631 		status = cx231xx_afe_adjust_ref_count(dev, pin_type);
632 		if (status < 0) {
633 			dev_err(dev->dev,
634 				"%s: adjust_ref_count :Failed to set AFE input mux - errCode [%d]!\n",
635 				__func__, status);
636 			return status;
637 		}
638 	}
639 
640 	/* call afe block to set video inputs */
641 	status = cx231xx_afe_set_input_mux(dev, input);
642 	if (status < 0) {
643 		dev_err(dev->dev,
644 			"%s: set_input_mux :Failed to set AFE input mux - errCode [%d]!\n",
645 			__func__, status);
646 		return status;
647 	}
648 
649 	switch (pin_type) {
650 	case CX231XX_VMUX_COMPOSITE1:
651 		status = vid_blk_read_word(dev, AFE_CTRL, &value);
652 		value |= (0 << 13) | (1 << 4);
653 		value &= ~(1 << 5);
654 
655 		/* set [24:23] [22:15] to 0  */
656 		value &= (~(0x1ff8000));
657 		/* set FUNC_MODE[24:23] = 2 IF_MOD[22:15] = 0  */
658 		value |= 0x1000000;
659 		status = vid_blk_write_word(dev, AFE_CTRL, value);
660 
661 		status = vid_blk_read_word(dev, OUT_CTRL1, &value);
662 		value |= (1 << 7);
663 		status = vid_blk_write_word(dev, OUT_CTRL1, value);
664 
665 		/* Set output mode */
666 		status = cx231xx_read_modify_write_i2c_dword(dev,
667 							VID_BLK_I2C_ADDRESS,
668 							OUT_CTRL1,
669 							FLD_OUT_MODE,
670 							dev->board.output_mode);
671 
672 		/* Tell DIF object to go to baseband mode  */
673 		status = cx231xx_dif_set_standard(dev, DIF_USE_BASEBAND);
674 		if (status < 0) {
675 			dev_err(dev->dev,
676 				"%s: cx231xx_dif set to By pass mode- errCode [%d]!\n",
677 				__func__, status);
678 			return status;
679 		}
680 
681 		/* Read the DFE_CTRL1 register */
682 		status = vid_blk_read_word(dev, DFE_CTRL1, &value);
683 
684 		/* enable the VBI_GATE_EN */
685 		value |= FLD_VBI_GATE_EN;
686 
687 		/* Enable the auto-VGA enable */
688 		value |= FLD_VGA_AUTO_EN;
689 
690 		/* Write it back */
691 		status = vid_blk_write_word(dev, DFE_CTRL1, value);
692 
693 		/* Disable auto config of registers */
694 		status = cx231xx_read_modify_write_i2c_dword(dev,
695 					VID_BLK_I2C_ADDRESS,
696 					MODE_CTRL, FLD_ACFG_DIS,
697 					cx231xx_set_field(FLD_ACFG_DIS, 1));
698 
699 		/* Set CVBS input mode */
700 		status = cx231xx_read_modify_write_i2c_dword(dev,
701 			VID_BLK_I2C_ADDRESS,
702 			MODE_CTRL, FLD_INPUT_MODE,
703 			cx231xx_set_field(FLD_INPUT_MODE, INPUT_MODE_CVBS_0));
704 		break;
705 	case CX231XX_VMUX_SVIDEO:
706 		/* Disable the use of  DIF */
707 
708 		status = vid_blk_read_word(dev, AFE_CTRL, &value);
709 
710 		/* set [24:23] [22:15] to 0 */
711 		value &= (~(0x1ff8000));
712 		/* set FUNC_MODE[24:23] = 2
713 		IF_MOD[22:15] = 0 DCR_BYP_CH2[4:4] = 1; */
714 		value |= 0x1000010;
715 		status = vid_blk_write_word(dev, AFE_CTRL, value);
716 
717 		/* Tell DIF object to go to baseband mode */
718 		status = cx231xx_dif_set_standard(dev, DIF_USE_BASEBAND);
719 		if (status < 0) {
720 			dev_err(dev->dev,
721 				"%s: cx231xx_dif set to By pass mode- errCode [%d]!\n",
722 				__func__, status);
723 			return status;
724 		}
725 
726 		/* Read the DFE_CTRL1 register */
727 		status = vid_blk_read_word(dev, DFE_CTRL1, &value);
728 
729 		/* enable the VBI_GATE_EN */
730 		value |= FLD_VBI_GATE_EN;
731 
732 		/* Enable the auto-VGA enable */
733 		value |= FLD_VGA_AUTO_EN;
734 
735 		/* Write it back */
736 		status = vid_blk_write_word(dev, DFE_CTRL1, value);
737 
738 		/* Disable auto config of registers  */
739 		status =  cx231xx_read_modify_write_i2c_dword(dev,
740 					VID_BLK_I2C_ADDRESS,
741 					MODE_CTRL, FLD_ACFG_DIS,
742 					cx231xx_set_field(FLD_ACFG_DIS, 1));
743 
744 		/* Set YC input mode */
745 		status = cx231xx_read_modify_write_i2c_dword(dev,
746 			VID_BLK_I2C_ADDRESS,
747 			MODE_CTRL,
748 			FLD_INPUT_MODE,
749 			cx231xx_set_field(FLD_INPUT_MODE, INPUT_MODE_YC_1));
750 
751 		/* Chroma to ADC2 */
752 		status = vid_blk_read_word(dev, AFE_CTRL, &value);
753 		value |= FLD_CHROMA_IN_SEL;	/* set the chroma in select */
754 
755 		/* Clear VGA_SEL_CH2 and VGA_SEL_CH3 (bits 7 and 8)
756 		   This sets them to use video
757 		   rather than audio.  Only one of the two will be in use. */
758 		value &= ~(FLD_VGA_SEL_CH2 | FLD_VGA_SEL_CH3);
759 
760 		status = vid_blk_write_word(dev, AFE_CTRL, value);
761 
762 		status = cx231xx_afe_set_mode(dev, AFE_MODE_BASEBAND);
763 		break;
764 	case CX231XX_VMUX_TELEVISION:
765 	case CX231XX_VMUX_CABLE:
766 	default:
767 		/* TODO: Test if this is also needed for xc2028/xc3028 */
768 		if (dev->board.tuner_type == TUNER_XC5000) {
769 			/* Disable the use of  DIF   */
770 
771 			status = vid_blk_read_word(dev, AFE_CTRL, &value);
772 			value |= (0 << 13) | (1 << 4);
773 			value &= ~(1 << 5);
774 
775 			/* set [24:23] [22:15] to 0 */
776 			value &= (~(0x1FF8000));
777 			/* set FUNC_MODE[24:23] = 2 IF_MOD[22:15] = 0 */
778 			value |= 0x1000000;
779 			status = vid_blk_write_word(dev, AFE_CTRL, value);
780 
781 			status = vid_blk_read_word(dev, OUT_CTRL1, &value);
782 			value |= (1 << 7);
783 			status = vid_blk_write_word(dev, OUT_CTRL1, value);
784 
785 			/* Set output mode */
786 			status = cx231xx_read_modify_write_i2c_dword(dev,
787 							VID_BLK_I2C_ADDRESS,
788 							OUT_CTRL1, FLD_OUT_MODE,
789 							dev->board.output_mode);
790 
791 			/* Tell DIF object to go to baseband mode */
792 			status = cx231xx_dif_set_standard(dev,
793 							  DIF_USE_BASEBAND);
794 			if (status < 0) {
795 				dev_err(dev->dev,
796 					"%s: cx231xx_dif set to By pass mode- errCode [%d]!\n",
797 				       __func__, status);
798 				return status;
799 			}
800 
801 			/* Read the DFE_CTRL1 register */
802 			status = vid_blk_read_word(dev, DFE_CTRL1, &value);
803 
804 			/* enable the VBI_GATE_EN */
805 			value |= FLD_VBI_GATE_EN;
806 
807 			/* Enable the auto-VGA enable */
808 			value |= FLD_VGA_AUTO_EN;
809 
810 			/* Write it back */
811 			status = vid_blk_write_word(dev, DFE_CTRL1, value);
812 
813 			/* Disable auto config of registers */
814 			status = cx231xx_read_modify_write_i2c_dword(dev,
815 					VID_BLK_I2C_ADDRESS,
816 					MODE_CTRL, FLD_ACFG_DIS,
817 					cx231xx_set_field(FLD_ACFG_DIS, 1));
818 
819 			/* Set CVBS input mode */
820 			status = cx231xx_read_modify_write_i2c_dword(dev,
821 				VID_BLK_I2C_ADDRESS,
822 				MODE_CTRL, FLD_INPUT_MODE,
823 				cx231xx_set_field(FLD_INPUT_MODE,
824 						INPUT_MODE_CVBS_0));
825 		} else {
826 			/* Enable the DIF for the tuner */
827 
828 			/* Reinitialize the DIF */
829 			status = cx231xx_dif_set_standard(dev, dev->norm);
830 			if (status < 0) {
831 				dev_err(dev->dev,
832 					"%s: cx231xx_dif set to By pass mode- errCode [%d]!\n",
833 					__func__, status);
834 				return status;
835 			}
836 
837 			/* Make sure bypass is cleared */
838 			status = vid_blk_read_word(dev, DIF_MISC_CTRL, &value);
839 
840 			/* Clear the bypass bit */
841 			value &= ~FLD_DIF_DIF_BYPASS;
842 
843 			/* Enable the use of the DIF block */
844 			status = vid_blk_write_word(dev, DIF_MISC_CTRL, value);
845 
846 			/* Read the DFE_CTRL1 register */
847 			status = vid_blk_read_word(dev, DFE_CTRL1, &value);
848 
849 			/* Disable the VBI_GATE_EN */
850 			value &= ~FLD_VBI_GATE_EN;
851 
852 			/* Enable the auto-VGA enable, AGC, and
853 			   set the skip count to 2 */
854 			value |= FLD_VGA_AUTO_EN | FLD_AGC_AUTO_EN | 0x00200000;
855 
856 			/* Write it back */
857 			status = vid_blk_write_word(dev, DFE_CTRL1, value);
858 
859 			/* Wait until AGC locks up */
860 			msleep(1);
861 
862 			/* Disable the auto-VGA enable AGC */
863 			value &= ~(FLD_VGA_AUTO_EN);
864 
865 			/* Write it back */
866 			status = vid_blk_write_word(dev, DFE_CTRL1, value);
867 
868 			/* Enable Polaris B0 AGC output */
869 			status = vid_blk_read_word(dev, PIN_CTRL, &value);
870 			value |= (FLD_OEF_AGC_RF) |
871 				 (FLD_OEF_AGC_IFVGA) |
872 				 (FLD_OEF_AGC_IF);
873 			status = vid_blk_write_word(dev, PIN_CTRL, value);
874 
875 			/* Set output mode */
876 			status = cx231xx_read_modify_write_i2c_dword(dev,
877 						VID_BLK_I2C_ADDRESS,
878 						OUT_CTRL1, FLD_OUT_MODE,
879 						dev->board.output_mode);
880 
881 			/* Disable auto config of registers */
882 			status = cx231xx_read_modify_write_i2c_dword(dev,
883 					VID_BLK_I2C_ADDRESS,
884 					MODE_CTRL, FLD_ACFG_DIS,
885 					cx231xx_set_field(FLD_ACFG_DIS, 1));
886 
887 			/* Set CVBS input mode */
888 			status = cx231xx_read_modify_write_i2c_dword(dev,
889 				VID_BLK_I2C_ADDRESS,
890 				MODE_CTRL, FLD_INPUT_MODE,
891 				cx231xx_set_field(FLD_INPUT_MODE,
892 						INPUT_MODE_CVBS_0));
893 
894 			/* Set some bits in AFE_CTRL so that channel 2 or 3
895 			 * is ready to receive audio */
896 			/* Clear clamp for channels 2 and 3      (bit 16-17) */
897 			/* Clear droop comp                      (bit 19-20) */
898 			/* Set VGA_SEL (for audio control)       (bit 7-8) */
899 			status = vid_blk_read_word(dev, AFE_CTRL, &value);
900 
901 			/*Set Func mode:01-DIF 10-baseband 11-YUV*/
902 			value &= (~(FLD_FUNC_MODE));
903 			value |= 0x800000;
904 
905 			value |= FLD_VGA_SEL_CH3 | FLD_VGA_SEL_CH2;
906 
907 			status = vid_blk_write_word(dev, AFE_CTRL, value);
908 
909 			if (dev->tuner_type == TUNER_NXP_TDA18271) {
910 				status = vid_blk_read_word(dev, PIN_CTRL,
911 				 &value);
912 				status = vid_blk_write_word(dev, PIN_CTRL,
913 				 (value & 0xFFFFFFEF));
914 			}
915 
916 			break;
917 
918 		}
919 		break;
920 	}
921 
922 	/* Set raw VBI mode */
923 	status = cx231xx_read_modify_write_i2c_dword(dev,
924 				VID_BLK_I2C_ADDRESS,
925 				OUT_CTRL1, FLD_VBIHACTRAW_EN,
926 				cx231xx_set_field(FLD_VBIHACTRAW_EN, 1));
927 
928 	status = vid_blk_read_word(dev, OUT_CTRL1, &value);
929 	if (value & 0x02) {
930 		value |= (1 << 19);
931 		status = vid_blk_write_word(dev, OUT_CTRL1, value);
932 	}
933 
934 	return status;
935 }
936 
937 void cx231xx_enable656(struct cx231xx *dev)
938 {
939 	u8 temp = 0;
940 	/*enable TS1 data[0:7] as output to export 656*/
941 
942 	vid_blk_write_byte(dev, TS1_PIN_CTL0, 0xFF);
943 
944 	/*enable TS1 clock as output to export 656*/
945 
946 	vid_blk_read_byte(dev, TS1_PIN_CTL1, &temp);
947 	temp = temp|0x04;
948 
949 	vid_blk_write_byte(dev, TS1_PIN_CTL1, temp);
950 }
951 EXPORT_SYMBOL_GPL(cx231xx_enable656);
952 
953 void cx231xx_disable656(struct cx231xx *dev)
954 {
955 	u8 temp = 0;
956 
957 	vid_blk_write_byte(dev, TS1_PIN_CTL0, 0x00);
958 
959 	vid_blk_read_byte(dev, TS1_PIN_CTL1, &temp);
960 	temp = temp&0xFB;
961 
962 	vid_blk_write_byte(dev, TS1_PIN_CTL1, temp);
963 }
964 EXPORT_SYMBOL_GPL(cx231xx_disable656);
965 
966 /*
967  * Handle any video-mode specific overrides that are different
968  * on a per video standards basis after touching the MODE_CTRL
969  * register which resets many values for autodetect
970  */
971 int cx231xx_do_mode_ctrl_overrides(struct cx231xx *dev)
972 {
973 	int status = 0;
974 
975 	dev_dbg(dev->dev, "%s: 0x%x\n",
976 		__func__, (unsigned int)dev->norm);
977 
978 	/* Change the DFE_CTRL3 bp_percent to fix flagging */
979 	status = vid_blk_write_word(dev, DFE_CTRL3, 0xCD3F0280);
980 
981 	if (dev->norm & (V4L2_STD_NTSC | V4L2_STD_PAL_M)) {
982 		dev_dbg(dev->dev, "%s: NTSC\n", __func__);
983 
984 		/* Move the close caption lines out of active video,
985 		   adjust the active video start point */
986 		status = cx231xx_read_modify_write_i2c_dword(dev,
987 							VID_BLK_I2C_ADDRESS,
988 							VERT_TIM_CTRL,
989 							FLD_VBLANK_CNT, 0x18);
990 		status = cx231xx_read_modify_write_i2c_dword(dev,
991 							VID_BLK_I2C_ADDRESS,
992 							VERT_TIM_CTRL,
993 							FLD_VACTIVE_CNT,
994 							0x1E7000);
995 		status = cx231xx_read_modify_write_i2c_dword(dev,
996 							VID_BLK_I2C_ADDRESS,
997 							VERT_TIM_CTRL,
998 							FLD_V656BLANK_CNT,
999 							0x1C000000);
1000 
1001 		status = cx231xx_read_modify_write_i2c_dword(dev,
1002 							VID_BLK_I2C_ADDRESS,
1003 							HORIZ_TIM_CTRL,
1004 							FLD_HBLANK_CNT,
1005 							cx231xx_set_field
1006 							(FLD_HBLANK_CNT, 0x79));
1007 
1008 	} else if (dev->norm & V4L2_STD_SECAM) {
1009 		dev_dbg(dev->dev, "%s: SECAM\n", __func__);
1010 		status =  cx231xx_read_modify_write_i2c_dword(dev,
1011 							VID_BLK_I2C_ADDRESS,
1012 							VERT_TIM_CTRL,
1013 							FLD_VBLANK_CNT, 0x20);
1014 		status = cx231xx_read_modify_write_i2c_dword(dev,
1015 							VID_BLK_I2C_ADDRESS,
1016 							VERT_TIM_CTRL,
1017 							FLD_VACTIVE_CNT,
1018 							cx231xx_set_field
1019 							(FLD_VACTIVE_CNT,
1020 							 0x244));
1021 		status = cx231xx_read_modify_write_i2c_dword(dev,
1022 							VID_BLK_I2C_ADDRESS,
1023 							VERT_TIM_CTRL,
1024 							FLD_V656BLANK_CNT,
1025 							cx231xx_set_field
1026 							(FLD_V656BLANK_CNT,
1027 							0x24));
1028 		/* Adjust the active video horizontal start point */
1029 		status = cx231xx_read_modify_write_i2c_dword(dev,
1030 							VID_BLK_I2C_ADDRESS,
1031 							HORIZ_TIM_CTRL,
1032 							FLD_HBLANK_CNT,
1033 							cx231xx_set_field
1034 							(FLD_HBLANK_CNT, 0x85));
1035 	} else {
1036 		dev_dbg(dev->dev, "%s: PAL\n", __func__);
1037 		status = cx231xx_read_modify_write_i2c_dword(dev,
1038 							VID_BLK_I2C_ADDRESS,
1039 							VERT_TIM_CTRL,
1040 							FLD_VBLANK_CNT, 0x20);
1041 		status = cx231xx_read_modify_write_i2c_dword(dev,
1042 							VID_BLK_I2C_ADDRESS,
1043 							VERT_TIM_CTRL,
1044 							FLD_VACTIVE_CNT,
1045 							cx231xx_set_field
1046 							(FLD_VACTIVE_CNT,
1047 							 0x244));
1048 		status = cx231xx_read_modify_write_i2c_dword(dev,
1049 							VID_BLK_I2C_ADDRESS,
1050 							VERT_TIM_CTRL,
1051 							FLD_V656BLANK_CNT,
1052 							cx231xx_set_field
1053 							(FLD_V656BLANK_CNT,
1054 							0x24));
1055 		/* Adjust the active video horizontal start point */
1056 		status = cx231xx_read_modify_write_i2c_dword(dev,
1057 							VID_BLK_I2C_ADDRESS,
1058 							HORIZ_TIM_CTRL,
1059 							FLD_HBLANK_CNT,
1060 							cx231xx_set_field
1061 							(FLD_HBLANK_CNT, 0x85));
1062 
1063 	}
1064 
1065 	return status;
1066 }
1067 
1068 int cx231xx_unmute_audio(struct cx231xx *dev)
1069 {
1070 	return vid_blk_write_byte(dev, PATH1_VOL_CTL, 0x24);
1071 }
1072 EXPORT_SYMBOL_GPL(cx231xx_unmute_audio);
1073 
1074 static int stopAudioFirmware(struct cx231xx *dev)
1075 {
1076 	return vid_blk_write_byte(dev, DL_CTL_CONTROL, 0x03);
1077 }
1078 
1079 static int restartAudioFirmware(struct cx231xx *dev)
1080 {
1081 	return vid_blk_write_byte(dev, DL_CTL_CONTROL, 0x13);
1082 }
1083 
1084 int cx231xx_set_audio_input(struct cx231xx *dev, u8 input)
1085 {
1086 	int status = 0;
1087 	enum AUDIO_INPUT ainput = AUDIO_INPUT_LINE;
1088 
1089 	switch (INPUT(input)->amux) {
1090 	case CX231XX_AMUX_VIDEO:
1091 		ainput = AUDIO_INPUT_TUNER_TV;
1092 		break;
1093 	case CX231XX_AMUX_LINE_IN:
1094 		status = cx231xx_i2s_blk_set_audio_input(dev, input);
1095 		ainput = AUDIO_INPUT_LINE;
1096 		break;
1097 	default:
1098 		break;
1099 	}
1100 
1101 	status = cx231xx_set_audio_decoder_input(dev, ainput);
1102 
1103 	return status;
1104 }
1105 
1106 int cx231xx_set_audio_decoder_input(struct cx231xx *dev,
1107 				    enum AUDIO_INPUT audio_input)
1108 {
1109 	u32 dwval;
1110 	int status;
1111 	u8 gen_ctrl;
1112 	u32 value = 0;
1113 
1114 	/* Put it in soft reset   */
1115 	status = vid_blk_read_byte(dev, GENERAL_CTL, &gen_ctrl);
1116 	gen_ctrl |= 1;
1117 	status = vid_blk_write_byte(dev, GENERAL_CTL, gen_ctrl);
1118 
1119 	switch (audio_input) {
1120 	case AUDIO_INPUT_LINE:
1121 		/* setup AUD_IO control from Merlin paralle output */
1122 		value = cx231xx_set_field(FLD_AUD_CHAN1_SRC,
1123 					  AUD_CHAN_SRC_PARALLEL);
1124 		status = vid_blk_write_word(dev, AUD_IO_CTRL, value);
1125 
1126 		/* setup input to Merlin, SRC2 connect to AC97
1127 		   bypass upsample-by-2, slave mode, sony mode, left justify
1128 		   adr 091c, dat 01000000 */
1129 		status = vid_blk_read_word(dev, AC97_CTL, &dwval);
1130 
1131 		status = vid_blk_write_word(dev, AC97_CTL,
1132 					   (dwval | FLD_AC97_UP2X_BYPASS));
1133 
1134 		/* select the parallel1 and SRC3 */
1135 		status = vid_blk_write_word(dev, BAND_OUT_SEL,
1136 				cx231xx_set_field(FLD_SRC3_IN_SEL, 0x0) |
1137 				cx231xx_set_field(FLD_SRC3_CLK_SEL, 0x0) |
1138 				cx231xx_set_field(FLD_PARALLEL1_SRC_SEL, 0x0));
1139 
1140 		/* unmute all, AC97 in, independence mode
1141 		   adr 08d0, data 0x00063073 */
1142 		status = vid_blk_write_word(dev, DL_CTL, 0x3000001);
1143 		status = vid_blk_write_word(dev, PATH1_CTL1, 0x00063073);
1144 
1145 		/* set AVC maximum threshold, adr 08d4, dat ffff0024 */
1146 		status = vid_blk_read_word(dev, PATH1_VOL_CTL, &dwval);
1147 		status = vid_blk_write_word(dev, PATH1_VOL_CTL,
1148 					   (dwval | FLD_PATH1_AVC_THRESHOLD));
1149 
1150 		/* set SC maximum threshold, adr 08ec, dat ffffb3a3 */
1151 		status = vid_blk_read_word(dev, PATH1_SC_CTL, &dwval);
1152 		status = vid_blk_write_word(dev, PATH1_SC_CTL,
1153 					   (dwval | FLD_PATH1_SC_THRESHOLD));
1154 		break;
1155 
1156 	case AUDIO_INPUT_TUNER_TV:
1157 	default:
1158 		status = stopAudioFirmware(dev);
1159 		/* Setup SRC sources and clocks */
1160 		status = vid_blk_write_word(dev, BAND_OUT_SEL,
1161 			cx231xx_set_field(FLD_SRC6_IN_SEL, 0x00)         |
1162 			cx231xx_set_field(FLD_SRC6_CLK_SEL, 0x01)        |
1163 			cx231xx_set_field(FLD_SRC5_IN_SEL, 0x00)         |
1164 			cx231xx_set_field(FLD_SRC5_CLK_SEL, 0x02)        |
1165 			cx231xx_set_field(FLD_SRC4_IN_SEL, 0x02)         |
1166 			cx231xx_set_field(FLD_SRC4_CLK_SEL, 0x03)        |
1167 			cx231xx_set_field(FLD_SRC3_IN_SEL, 0x00)         |
1168 			cx231xx_set_field(FLD_SRC3_CLK_SEL, 0x00)        |
1169 			cx231xx_set_field(FLD_BASEBAND_BYPASS_CTL, 0x00) |
1170 			cx231xx_set_field(FLD_AC97_SRC_SEL, 0x03)        |
1171 			cx231xx_set_field(FLD_I2S_SRC_SEL, 0x00)         |
1172 			cx231xx_set_field(FLD_PARALLEL2_SRC_SEL, 0x02)   |
1173 			cx231xx_set_field(FLD_PARALLEL1_SRC_SEL, 0x01));
1174 
1175 		/* Setup the AUD_IO control */
1176 		status = vid_blk_write_word(dev, AUD_IO_CTRL,
1177 			cx231xx_set_field(FLD_I2S_PORT_DIR, 0x00)  |
1178 			cx231xx_set_field(FLD_I2S_OUT_SRC, 0x00)   |
1179 			cx231xx_set_field(FLD_AUD_CHAN3_SRC, 0x00) |
1180 			cx231xx_set_field(FLD_AUD_CHAN2_SRC, 0x00) |
1181 			cx231xx_set_field(FLD_AUD_CHAN1_SRC, 0x03));
1182 
1183 		status = vid_blk_write_word(dev, PATH1_CTL1, 0x1F063870);
1184 
1185 		/* setAudioStandard(_audio_standard); */
1186 		status = vid_blk_write_word(dev, PATH1_CTL1, 0x00063870);
1187 
1188 		status = restartAudioFirmware(dev);
1189 
1190 		switch (dev->board.tuner_type) {
1191 		case TUNER_XC5000:
1192 			/* SIF passthrough at 28.6363 MHz sample rate */
1193 			status = cx231xx_read_modify_write_i2c_dword(dev,
1194 					VID_BLK_I2C_ADDRESS,
1195 					CHIP_CTRL,
1196 					FLD_SIF_EN,
1197 					cx231xx_set_field(FLD_SIF_EN, 1));
1198 			break;
1199 		case TUNER_NXP_TDA18271:
1200 			/* Normal mode: SIF passthrough at 14.32 MHz */
1201 			status = cx231xx_read_modify_write_i2c_dword(dev,
1202 					VID_BLK_I2C_ADDRESS,
1203 					CHIP_CTRL,
1204 					FLD_SIF_EN,
1205 					cx231xx_set_field(FLD_SIF_EN, 0));
1206 			break;
1207 		default:
1208 			/* This is just a casual suggestion to people adding
1209 			   new boards in case they use a tuner type we don't
1210 			   currently know about */
1211 			dev_info(dev->dev,
1212 				 "Unknown tuner type configuring SIF");
1213 			break;
1214 		}
1215 		break;
1216 
1217 	case AUDIO_INPUT_TUNER_FM:
1218 		/*  use SIF for FM radio
1219 		   setupFM();
1220 		   setAudioStandard(_audio_standard);
1221 		 */
1222 		break;
1223 
1224 	case AUDIO_INPUT_MUTE:
1225 		status = vid_blk_write_word(dev, PATH1_CTL1, 0x1F011012);
1226 		break;
1227 	}
1228 
1229 	/* Take it out of soft reset */
1230 	status = vid_blk_read_byte(dev, GENERAL_CTL, &gen_ctrl);
1231 	gen_ctrl &= ~1;
1232 	status = vid_blk_write_byte(dev, GENERAL_CTL, gen_ctrl);
1233 
1234 	return status;
1235 }
1236 
1237 /******************************************************************************
1238  *                    C H I P Specific  C O N T R O L   functions             *
1239  ******************************************************************************/
1240 int cx231xx_init_ctrl_pin_status(struct cx231xx *dev)
1241 {
1242 	u32 value;
1243 	int status = 0;
1244 
1245 	status = vid_blk_read_word(dev, PIN_CTRL, &value);
1246 	value |= (~dev->board.ctl_pin_status_mask);
1247 	status = vid_blk_write_word(dev, PIN_CTRL, value);
1248 
1249 	return status;
1250 }
1251 
1252 int cx231xx_set_agc_analog_digital_mux_select(struct cx231xx *dev,
1253 					      u8 analog_or_digital)
1254 {
1255 	int status = 0;
1256 
1257 	/* first set the direction to output */
1258 	status = cx231xx_set_gpio_direction(dev,
1259 					    dev->board.
1260 					    agc_analog_digital_select_gpio, 1);
1261 
1262 	/* 0 - demod ; 1 - Analog mode */
1263 	status = cx231xx_set_gpio_value(dev,
1264 				   dev->board.agc_analog_digital_select_gpio,
1265 				   analog_or_digital);
1266 
1267 	return status;
1268 }
1269 
1270 int cx231xx_enable_i2c_port_3(struct cx231xx *dev, bool is_port_3)
1271 {
1272 	u8 value[4] = { 0, 0, 0, 0 };
1273 	int status = 0;
1274 	bool current_is_port_3;
1275 
1276 	/*
1277 	 * Should this code check dev->port_3_switch_enabled first
1278 	 * to skip unnecessary reading of the register?
1279 	 * If yes, the flag dev->port_3_switch_enabled must be initialized
1280 	 * correctly.
1281 	 */
1282 
1283 	status = cx231xx_read_ctrl_reg(dev, VRT_GET_REGISTER,
1284 				       PWR_CTL_EN, value, 4);
1285 	if (status < 0)
1286 		return status;
1287 
1288 	current_is_port_3 = value[0] & I2C_DEMOD_EN ? true : false;
1289 
1290 	/* Just return, if already using the right port */
1291 	if (current_is_port_3 == is_port_3)
1292 		return 0;
1293 
1294 	if (is_port_3)
1295 		value[0] |= I2C_DEMOD_EN;
1296 	else
1297 		value[0] &= ~I2C_DEMOD_EN;
1298 
1299 	status = cx231xx_write_ctrl_reg(dev, VRT_SET_REGISTER,
1300 					PWR_CTL_EN, value, 4);
1301 
1302 	/* remember status of the switch for usage in is_tuner */
1303 	if (status >= 0)
1304 		dev->port_3_switch_enabled = is_port_3;
1305 
1306 	return status;
1307 
1308 }
1309 EXPORT_SYMBOL_GPL(cx231xx_enable_i2c_port_3);
1310 
1311 void update_HH_register_after_set_DIF(struct cx231xx *dev)
1312 {
1313 /*
1314 	u8 status = 0;
1315 	u32 value = 0;
1316 
1317 	vid_blk_write_word(dev, PIN_CTRL, 0xA0FFF82F);
1318 	vid_blk_write_word(dev, DIF_MISC_CTRL, 0x0A203F11);
1319 	vid_blk_write_word(dev, DIF_SRC_PHASE_INC, 0x1BEFBF06);
1320 
1321 	status = vid_blk_read_word(dev, AFE_CTRL_C2HH_SRC_CTRL, &value);
1322 	vid_blk_write_word(dev, AFE_CTRL_C2HH_SRC_CTRL, 0x4485D390);
1323 	status = vid_blk_read_word(dev, AFE_CTRL_C2HH_SRC_CTRL,  &value);
1324 */
1325 }
1326 
1327 void cx231xx_dump_HH_reg(struct cx231xx *dev)
1328 {
1329 	u32 value = 0;
1330 	u16  i = 0;
1331 
1332 	value = 0x45005390;
1333 	vid_blk_write_word(dev, 0x104, value);
1334 
1335 	for (i = 0x100; i < 0x140; i++) {
1336 		vid_blk_read_word(dev, i, &value);
1337 		dev_dbg(dev->dev, "reg0x%x=0x%x\n", i, value);
1338 		i = i+3;
1339 	}
1340 
1341 	for (i = 0x300; i < 0x400; i++) {
1342 		vid_blk_read_word(dev, i, &value);
1343 		dev_dbg(dev->dev, "reg0x%x=0x%x\n", i, value);
1344 		i = i+3;
1345 	}
1346 
1347 	for (i = 0x400; i < 0x440; i++) {
1348 		vid_blk_read_word(dev, i,  &value);
1349 		dev_dbg(dev->dev, "reg0x%x=0x%x\n", i, value);
1350 		i = i+3;
1351 	}
1352 
1353 	vid_blk_read_word(dev, AFE_CTRL_C2HH_SRC_CTRL, &value);
1354 	dev_dbg(dev->dev, "AFE_CTRL_C2HH_SRC_CTRL=0x%x\n", value);
1355 	vid_blk_write_word(dev, AFE_CTRL_C2HH_SRC_CTRL, 0x4485D390);
1356 	vid_blk_read_word(dev, AFE_CTRL_C2HH_SRC_CTRL, &value);
1357 	dev_dbg(dev->dev, "AFE_CTRL_C2HH_SRC_CTRL=0x%x\n", value);
1358 }
1359 
1360 #if 0
1361 static void cx231xx_dump_SC_reg(struct cx231xx *dev)
1362 {
1363 	u8 value[4] = { 0, 0, 0, 0 };
1364 	dev_dbg(dev->dev, "%s!\n", __func__);
1365 
1366 	cx231xx_read_ctrl_reg(dev, VRT_GET_REGISTER, BOARD_CFG_STAT,
1367 				 value, 4);
1368 	dev_dbg(dev->dev,
1369 		"reg0x%x=0x%x 0x%x 0x%x 0x%x\n", BOARD_CFG_STAT, value[0],
1370 		value[1], value[2], value[3]);
1371 	cx231xx_read_ctrl_reg(dev, VRT_GET_REGISTER, TS_MODE_REG,
1372 				 value, 4);
1373 	dev_dbg(dev->dev,
1374 		"reg0x%x=0x%x 0x%x 0x%x 0x%x\n", TS_MODE_REG, value[0],
1375 		 value[1], value[2], value[3]);
1376 	cx231xx_read_ctrl_reg(dev, VRT_GET_REGISTER, TS1_CFG_REG,
1377 				 value, 4);
1378 	dev_dbg(dev->dev,
1379 		"reg0x%x=0x%x 0x%x 0x%x 0x%x\n", TS1_CFG_REG, value[0],
1380 		 value[1], value[2], value[3]);
1381 	cx231xx_read_ctrl_reg(dev, VRT_GET_REGISTER, TS1_LENGTH_REG,
1382 				 value, 4);
1383 	dev_dbg(dev->dev,
1384 		"reg0x%x=0x%x 0x%x 0x%x 0x%x\n", TS1_LENGTH_REG, value[0],
1385 		value[1], value[2], value[3]);
1386 
1387 	cx231xx_read_ctrl_reg(dev, VRT_GET_REGISTER, TS2_CFG_REG,
1388 				 value, 4);
1389 	dev_dbg(dev->dev,
1390 		"reg0x%x=0x%x 0x%x 0x%x 0x%x\n", TS2_CFG_REG, value[0],
1391 		value[1], value[2], value[3]);
1392 	cx231xx_read_ctrl_reg(dev, VRT_GET_REGISTER, TS2_LENGTH_REG,
1393 				 value, 4);
1394 	dev_dbg(dev->dev,
1395 		"reg0x%x=0x%x 0x%x 0x%x 0x%x\n", TS2_LENGTH_REG, value[0],
1396 		value[1], value[2], value[3]);
1397 	cx231xx_read_ctrl_reg(dev, VRT_GET_REGISTER, EP_MODE_SET,
1398 				 value, 4);
1399 	dev_dbg(dev->dev,
1400 		"reg0x%x=0x%x 0x%x 0x%x 0x%x\n", EP_MODE_SET, value[0],
1401 		 value[1], value[2], value[3]);
1402 	cx231xx_read_ctrl_reg(dev, VRT_GET_REGISTER, CIR_PWR_PTN1,
1403 				 value, 4);
1404 	dev_dbg(dev->dev,
1405 		"reg0x%x=0x%x 0x%x 0x%x 0x%x\n", CIR_PWR_PTN1, value[0],
1406 		value[1], value[2], value[3]);
1407 
1408 	cx231xx_read_ctrl_reg(dev, VRT_GET_REGISTER, CIR_PWR_PTN2,
1409 				 value, 4);
1410 	dev_dbg(dev->dev,
1411 		"reg0x%x=0x%x 0x%x 0x%x 0x%x\n", CIR_PWR_PTN2, value[0],
1412 		value[1], value[2], value[3]);
1413 	cx231xx_read_ctrl_reg(dev, VRT_GET_REGISTER, CIR_PWR_PTN3,
1414 				 value, 4);
1415 	dev_dbg(dev->dev,
1416 		"reg0x%x=0x%x 0x%x 0x%x 0x%x\n", CIR_PWR_PTN3, value[0],
1417 		value[1], value[2], value[3]);
1418 	cx231xx_read_ctrl_reg(dev, VRT_GET_REGISTER, CIR_PWR_MASK0,
1419 				 value, 4);
1420 	dev_dbg(dev->dev,
1421 		"reg0x%x=0x%x 0x%x 0x%x 0x%x\n", CIR_PWR_MASK0, value[0],
1422 		value[1], value[2], value[3]);
1423 	cx231xx_read_ctrl_reg(dev, VRT_GET_REGISTER, CIR_PWR_MASK1,
1424 				 value, 4);
1425 	dev_dbg(dev->dev,
1426 		"reg0x%x=0x%x 0x%x 0x%x 0x%x\n", CIR_PWR_MASK1, value[0],
1427 		value[1], value[2], value[3]);
1428 
1429 	cx231xx_read_ctrl_reg(dev, VRT_GET_REGISTER, CIR_PWR_MASK2,
1430 				 value, 4);
1431 	dev_dbg(dev->dev,
1432 		"reg0x%x=0x%x 0x%x 0x%x 0x%x\n", CIR_PWR_MASK2, value[0],
1433 		value[1], value[2], value[3]);
1434 	cx231xx_read_ctrl_reg(dev, VRT_GET_REGISTER, CIR_GAIN,
1435 				 value, 4);
1436 	dev_dbg(dev->dev,
1437 		"reg0x%x=0x%x 0x%x 0x%x 0x%x\n", CIR_GAIN, value[0],
1438 		value[1], value[2], value[3]);
1439 	cx231xx_read_ctrl_reg(dev, VRT_GET_REGISTER, CIR_CAR_REG,
1440 				 value, 4);
1441 	dev_dbg(dev->dev,
1442 		"reg0x%x=0x%x 0x%x 0x%x 0x%x\n", CIR_CAR_REG, value[0],
1443 		value[1], value[2], value[3]);
1444 	cx231xx_read_ctrl_reg(dev, VRT_GET_REGISTER, CIR_OT_CFG1,
1445 				 value, 4);
1446 	dev_dbg(dev->dev,
1447 		"reg0x%x=0x%x 0x%x 0x%x 0x%x\n", CIR_OT_CFG1, value[0],
1448 		value[1], value[2], value[3]);
1449 
1450 	cx231xx_read_ctrl_reg(dev, VRT_GET_REGISTER, CIR_OT_CFG2,
1451 				 value, 4);
1452 	dev_dbg(dev->dev,
1453 		"reg0x%x=0x%x 0x%x 0x%x 0x%x\n", CIR_OT_CFG2, value[0],
1454 		value[1], value[2], value[3]);
1455 	cx231xx_read_ctrl_reg(dev, VRT_GET_REGISTER, PWR_CTL_EN,
1456 				 value, 4);
1457 	dev_dbg(dev->dev,
1458 		"reg0x%x=0x%x 0x%x 0x%x 0x%x\n", PWR_CTL_EN, value[0],
1459 		value[1], value[2], value[3]);
1460 }
1461 #endif
1462 
1463 void cx231xx_Setup_AFE_for_LowIF(struct cx231xx *dev)
1464 
1465 {
1466 	u8 value = 0;
1467 
1468 	afe_read_byte(dev, ADC_STATUS2_CH3, &value);
1469 	value = (value & 0xFE)|0x01;
1470 	afe_write_byte(dev, ADC_STATUS2_CH3, value);
1471 
1472 	afe_read_byte(dev, ADC_STATUS2_CH3, &value);
1473 	value = (value & 0xFE)|0x00;
1474 	afe_write_byte(dev, ADC_STATUS2_CH3, value);
1475 
1476 
1477 /*
1478 	config colibri to lo-if mode
1479 
1480 	FIXME: ntf_mode = 2'b00 by default. But set 0x1 would reduce
1481 		the diff IF input by half,
1482 
1483 		for low-if agc defect
1484 */
1485 
1486 	afe_read_byte(dev, ADC_NTF_PRECLMP_EN_CH3, &value);
1487 	value = (value & 0xFC)|0x00;
1488 	afe_write_byte(dev, ADC_NTF_PRECLMP_EN_CH3, value);
1489 
1490 	afe_read_byte(dev, ADC_INPUT_CH3, &value);
1491 	value = (value & 0xF9)|0x02;
1492 	afe_write_byte(dev, ADC_INPUT_CH3, value);
1493 
1494 	afe_read_byte(dev, ADC_FB_FRCRST_CH3, &value);
1495 	value = (value & 0xFB)|0x04;
1496 	afe_write_byte(dev, ADC_FB_FRCRST_CH3, value);
1497 
1498 	afe_read_byte(dev, ADC_DCSERVO_DEM_CH3, &value);
1499 	value = (value & 0xFC)|0x03;
1500 	afe_write_byte(dev, ADC_DCSERVO_DEM_CH3, value);
1501 
1502 	afe_read_byte(dev, ADC_CTRL_DAC1_CH3, &value);
1503 	value = (value & 0xFB)|0x04;
1504 	afe_write_byte(dev, ADC_CTRL_DAC1_CH3, value);
1505 
1506 	afe_read_byte(dev, ADC_CTRL_DAC23_CH3, &value);
1507 	value = (value & 0xF8)|0x06;
1508 	afe_write_byte(dev, ADC_CTRL_DAC23_CH3, value);
1509 
1510 	afe_read_byte(dev, ADC_CTRL_DAC23_CH3, &value);
1511 	value = (value & 0x8F)|0x40;
1512 	afe_write_byte(dev, ADC_CTRL_DAC23_CH3, value);
1513 
1514 	afe_read_byte(dev, ADC_PWRDN_CLAMP_CH3, &value);
1515 	value = (value & 0xDF)|0x20;
1516 	afe_write_byte(dev, ADC_PWRDN_CLAMP_CH3, value);
1517 }
1518 
1519 void cx231xx_set_Colibri_For_LowIF(struct cx231xx *dev, u32 if_freq,
1520 		 u8 spectral_invert, u32 mode)
1521 {
1522 	u32 colibri_carrier_offset = 0;
1523 	u32 func_mode = 0x01; /* Device has a DIF if this function is called */
1524 	u32 standard = 0;
1525 	u8 value[4] = { 0, 0, 0, 0 };
1526 
1527 	dev_dbg(dev->dev, "Enter cx231xx_set_Colibri_For_LowIF()\n");
1528 	value[0] = (u8) 0x6F;
1529 	value[1] = (u8) 0x6F;
1530 	value[2] = (u8) 0x6F;
1531 	value[3] = (u8) 0x6F;
1532 	cx231xx_write_ctrl_reg(dev, VRT_SET_REGISTER,
1533 					PWR_CTL_EN, value, 4);
1534 
1535 	/*Set colibri for low IF*/
1536 	cx231xx_afe_set_mode(dev, AFE_MODE_LOW_IF);
1537 
1538 	/* Set C2HH for low IF operation.*/
1539 	standard = dev->norm;
1540 	cx231xx_dif_configure_C2HH_for_low_IF(dev, dev->active_mode,
1541 						       func_mode, standard);
1542 
1543 	/* Get colibri offsets.*/
1544 	colibri_carrier_offset = cx231xx_Get_Colibri_CarrierOffset(mode,
1545 								   standard);
1546 
1547 	dev_dbg(dev->dev, "colibri_carrier_offset=%d, standard=0x%x\n",
1548 		     colibri_carrier_offset, standard);
1549 
1550 	/* Set the band Pass filter for DIF*/
1551 	cx231xx_set_DIF_bandpass(dev, (if_freq+colibri_carrier_offset),
1552 				 spectral_invert, mode);
1553 }
1554 
1555 u32 cx231xx_Get_Colibri_CarrierOffset(u32 mode, u32 standerd)
1556 {
1557 	u32 colibri_carrier_offset = 0;
1558 
1559 	if (mode == TUNER_MODE_FM_RADIO) {
1560 		colibri_carrier_offset = 1100000;
1561 	} else if (standerd & (V4L2_STD_MN | V4L2_STD_NTSC_M_JP)) {
1562 		colibri_carrier_offset = 4832000;  /*4.83MHz	*/
1563 	} else if (standerd & (V4L2_STD_PAL_B | V4L2_STD_PAL_G)) {
1564 		colibri_carrier_offset = 2700000;  /*2.70MHz       */
1565 	} else if (standerd & (V4L2_STD_PAL_D | V4L2_STD_PAL_I
1566 			| V4L2_STD_SECAM)) {
1567 		colibri_carrier_offset = 2100000;  /*2.10MHz	*/
1568 	}
1569 
1570 	return colibri_carrier_offset;
1571 }
1572 
1573 void cx231xx_set_DIF_bandpass(struct cx231xx *dev, u32 if_freq,
1574 		 u8 spectral_invert, u32 mode)
1575 {
1576 	unsigned long pll_freq_word;
1577 	u32 dif_misc_ctrl_value = 0;
1578 	u64 pll_freq_u64 = 0;
1579 	u32 i = 0;
1580 
1581 	dev_dbg(dev->dev, "if_freq=%d;spectral_invert=0x%x;mode=0x%x\n",
1582 		if_freq, spectral_invert, mode);
1583 
1584 
1585 	if (mode == TUNER_MODE_FM_RADIO) {
1586 		pll_freq_word = 0x905A1CAC;
1587 		vid_blk_write_word(dev, DIF_PLL_FREQ_WORD,  pll_freq_word);
1588 
1589 	} else /*KSPROPERTY_TUNER_MODE_TV*/{
1590 		/* Calculate the PLL frequency word based on the adjusted if_freq*/
1591 		pll_freq_word = if_freq;
1592 		pll_freq_u64 = (u64)pll_freq_word << 28L;
1593 		do_div(pll_freq_u64, 50000000);
1594 		pll_freq_word = (u32)pll_freq_u64;
1595 		/*pll_freq_word = 0x3463497;*/
1596 		vid_blk_write_word(dev, DIF_PLL_FREQ_WORD,  pll_freq_word);
1597 
1598 	if (spectral_invert) {
1599 		if_freq -= 400000;
1600 		/* Enable Spectral Invert*/
1601 		vid_blk_read_word(dev, DIF_MISC_CTRL,
1602 					&dif_misc_ctrl_value);
1603 		dif_misc_ctrl_value = dif_misc_ctrl_value | 0x00200000;
1604 		vid_blk_write_word(dev, DIF_MISC_CTRL,
1605 					dif_misc_ctrl_value);
1606 	} else {
1607 		if_freq += 400000;
1608 		/* Disable Spectral Invert*/
1609 		vid_blk_read_word(dev, DIF_MISC_CTRL,
1610 					&dif_misc_ctrl_value);
1611 		dif_misc_ctrl_value = dif_misc_ctrl_value & 0xFFDFFFFF;
1612 		vid_blk_write_word(dev, DIF_MISC_CTRL,
1613 					dif_misc_ctrl_value);
1614 	}
1615 
1616 	if_freq = (if_freq/100000)*100000;
1617 
1618 	if (if_freq < 3000000)
1619 		if_freq = 3000000;
1620 
1621 	if (if_freq > 16000000)
1622 		if_freq = 16000000;
1623 	}
1624 
1625 	dev_dbg(dev->dev, "Enter IF=%zu\n", ARRAY_SIZE(Dif_set_array));
1626 	for (i = 0; i < ARRAY_SIZE(Dif_set_array); i++) {
1627 		if (Dif_set_array[i].if_freq == if_freq) {
1628 			vid_blk_write_word(dev,
1629 			Dif_set_array[i].register_address, Dif_set_array[i].value);
1630 		}
1631 	}
1632 }
1633 
1634 /******************************************************************************
1635  *                 D I F - B L O C K    C O N T R O L   functions             *
1636  ******************************************************************************/
1637 int cx231xx_dif_configure_C2HH_for_low_IF(struct cx231xx *dev, u32 mode,
1638 					  u32 function_mode, u32 standard)
1639 {
1640 	int status = 0;
1641 
1642 
1643 	if (mode == V4L2_TUNER_RADIO) {
1644 		/* C2HH */
1645 		/* lo if big signal */
1646 		status = cx231xx_reg_mask_write(dev,
1647 				VID_BLK_I2C_ADDRESS, 32,
1648 				AFE_CTRL_C2HH_SRC_CTRL, 30, 31, 0x1);
1649 		/* FUNC_MODE = DIF */
1650 		status = cx231xx_reg_mask_write(dev,
1651 				VID_BLK_I2C_ADDRESS, 32,
1652 				AFE_CTRL_C2HH_SRC_CTRL, 23, 24, function_mode);
1653 		/* IF_MODE */
1654 		status = cx231xx_reg_mask_write(dev,
1655 				VID_BLK_I2C_ADDRESS, 32,
1656 				AFE_CTRL_C2HH_SRC_CTRL, 15, 22, 0xFF);
1657 		/* no inv */
1658 		status = cx231xx_reg_mask_write(dev,
1659 				VID_BLK_I2C_ADDRESS, 32,
1660 				AFE_CTRL_C2HH_SRC_CTRL, 9, 9, 0x1);
1661 	} else if (standard != DIF_USE_BASEBAND) {
1662 		if (standard & V4L2_STD_MN) {
1663 			/* lo if big signal */
1664 			status = cx231xx_reg_mask_write(dev,
1665 					VID_BLK_I2C_ADDRESS, 32,
1666 					AFE_CTRL_C2HH_SRC_CTRL, 30, 31, 0x1);
1667 			/* FUNC_MODE = DIF */
1668 			status = cx231xx_reg_mask_write(dev,
1669 					VID_BLK_I2C_ADDRESS, 32,
1670 					AFE_CTRL_C2HH_SRC_CTRL, 23, 24,
1671 					function_mode);
1672 			/* IF_MODE */
1673 			status = cx231xx_reg_mask_write(dev,
1674 					VID_BLK_I2C_ADDRESS, 32,
1675 					AFE_CTRL_C2HH_SRC_CTRL, 15, 22, 0xb);
1676 			/* no inv */
1677 			status = cx231xx_reg_mask_write(dev,
1678 					VID_BLK_I2C_ADDRESS, 32,
1679 					AFE_CTRL_C2HH_SRC_CTRL, 9, 9, 0x1);
1680 			/* 0x124, AUD_CHAN1_SRC = 0x3 */
1681 			status = cx231xx_reg_mask_write(dev,
1682 					VID_BLK_I2C_ADDRESS, 32,
1683 					AUD_IO_CTRL, 0, 31, 0x00000003);
1684 		} else if ((standard == V4L2_STD_PAL_I) |
1685 			(standard & V4L2_STD_PAL_D) |
1686 			(standard & V4L2_STD_SECAM)) {
1687 			/* C2HH setup */
1688 			/* lo if big signal */
1689 			status = cx231xx_reg_mask_write(dev,
1690 					VID_BLK_I2C_ADDRESS, 32,
1691 					AFE_CTRL_C2HH_SRC_CTRL, 30, 31, 0x1);
1692 			/* FUNC_MODE = DIF */
1693 			status = cx231xx_reg_mask_write(dev,
1694 					VID_BLK_I2C_ADDRESS, 32,
1695 					AFE_CTRL_C2HH_SRC_CTRL, 23, 24,
1696 					function_mode);
1697 			/* IF_MODE */
1698 			status = cx231xx_reg_mask_write(dev,
1699 					VID_BLK_I2C_ADDRESS, 32,
1700 					AFE_CTRL_C2HH_SRC_CTRL, 15, 22, 0xF);
1701 			/* no inv */
1702 			status = cx231xx_reg_mask_write(dev,
1703 					VID_BLK_I2C_ADDRESS, 32,
1704 					AFE_CTRL_C2HH_SRC_CTRL, 9, 9, 0x1);
1705 		} else {
1706 			/* default PAL BG */
1707 			/* C2HH setup */
1708 			/* lo if big signal */
1709 			status = cx231xx_reg_mask_write(dev,
1710 					VID_BLK_I2C_ADDRESS, 32,
1711 					AFE_CTRL_C2HH_SRC_CTRL, 30, 31, 0x1);
1712 			/* FUNC_MODE = DIF */
1713 			status = cx231xx_reg_mask_write(dev,
1714 					VID_BLK_I2C_ADDRESS, 32,
1715 					AFE_CTRL_C2HH_SRC_CTRL, 23, 24,
1716 					function_mode);
1717 			/* IF_MODE */
1718 			status = cx231xx_reg_mask_write(dev,
1719 					VID_BLK_I2C_ADDRESS, 32,
1720 					AFE_CTRL_C2HH_SRC_CTRL, 15, 22, 0xE);
1721 			/* no inv */
1722 			status = cx231xx_reg_mask_write(dev,
1723 					VID_BLK_I2C_ADDRESS, 32,
1724 					AFE_CTRL_C2HH_SRC_CTRL, 9, 9, 0x1);
1725 		}
1726 	}
1727 
1728 	return status;
1729 }
1730 
1731 int cx231xx_dif_set_standard(struct cx231xx *dev, u32 standard)
1732 {
1733 	int status = 0;
1734 	u32 dif_misc_ctrl_value = 0;
1735 	u32 func_mode = 0;
1736 
1737 	dev_dbg(dev->dev, "%s: setStandard to %x\n", __func__, standard);
1738 
1739 	status = vid_blk_read_word(dev, DIF_MISC_CTRL, &dif_misc_ctrl_value);
1740 	if (standard != DIF_USE_BASEBAND)
1741 		dev->norm = standard;
1742 
1743 	switch (dev->model) {
1744 	case CX231XX_BOARD_CNXT_CARRAERA:
1745 	case CX231XX_BOARD_CNXT_RDE_250:
1746 	case CX231XX_BOARD_CNXT_SHELBY:
1747 	case CX231XX_BOARD_CNXT_RDU_250:
1748 	case CX231XX_BOARD_CNXT_VIDEO_GRABBER:
1749 	case CX231XX_BOARD_HAUPPAUGE_EXETER:
1750 	case CX231XX_BOARD_OTG102:
1751 		func_mode = 0x03;
1752 		break;
1753 	case CX231XX_BOARD_CNXT_RDE_253S:
1754 	case CX231XX_BOARD_CNXT_RDU_253S:
1755 	case CX231XX_BOARD_HAUPPAUGE_USB2_FM_PAL:
1756 	case CX231XX_BOARD_HAUPPAUGE_USB2_FM_NTSC:
1757 		func_mode = 0x01;
1758 		break;
1759 	default:
1760 		func_mode = 0x01;
1761 	}
1762 
1763 	status = cx231xx_dif_configure_C2HH_for_low_IF(dev, dev->active_mode,
1764 						  func_mode, standard);
1765 
1766 	if (standard == DIF_USE_BASEBAND) {	/* base band */
1767 		/* There is a different SRC_PHASE_INC value
1768 		   for baseband vs. DIF */
1769 		status = vid_blk_write_word(dev, DIF_SRC_PHASE_INC, 0xDF7DF83);
1770 		status = vid_blk_read_word(dev, DIF_MISC_CTRL,
1771 						&dif_misc_ctrl_value);
1772 		dif_misc_ctrl_value |= FLD_DIF_DIF_BYPASS;
1773 		status = vid_blk_write_word(dev, DIF_MISC_CTRL,
1774 						dif_misc_ctrl_value);
1775 	} else if (standard & V4L2_STD_PAL_D) {
1776 		status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32,
1777 					   DIF_PLL_CTRL, 0, 31, 0x6503bc0c);
1778 		status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32,
1779 					   DIF_PLL_CTRL1, 0, 31, 0xbd038c85);
1780 		status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32,
1781 					   DIF_PLL_CTRL2, 0, 31, 0x1db4640a);
1782 		status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32,
1783 					   DIF_PLL_CTRL3, 0, 31, 0x00008800);
1784 		status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32,
1785 					   DIF_AGC_IF_REF, 0, 31, 0x444C1380);
1786 		status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32,
1787 					   DIF_AGC_CTRL_IF, 0, 31, 0xDA302600);
1788 		status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32,
1789 					   DIF_AGC_CTRL_INT, 0, 31, 0xDA261700);
1790 		status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32,
1791 					   DIF_AGC_CTRL_RF, 0, 31, 0xDA262600);
1792 		status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32,
1793 					   DIF_AGC_IF_INT_CURRENT, 0, 31,
1794 					   0x26001700);
1795 		status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32,
1796 					   DIF_AGC_RF_CURRENT, 0, 31,
1797 					   0x00002660);
1798 		status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32,
1799 					   DIF_VIDEO_AGC_CTRL, 0, 31,
1800 					   0x72500800);
1801 		status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32,
1802 					   DIF_VID_AUD_OVERRIDE, 0, 31,
1803 					   0x27000100);
1804 		status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32,
1805 					   DIF_AV_SEP_CTRL, 0, 31, 0x3F3934EA);
1806 		status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32,
1807 					   DIF_COMP_FLT_CTRL, 0, 31,
1808 					   0x00000000);
1809 		status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32,
1810 					   DIF_SRC_PHASE_INC, 0, 31,
1811 					   0x1befbf06);
1812 		status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32,
1813 					   DIF_SRC_GAIN_CONTROL, 0, 31,
1814 					   0x000035e8);
1815 		status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32,
1816 					   DIF_RPT_VARIANCE, 0, 31, 0x00000000);
1817 		/* Save the Spec Inversion value */
1818 		dif_misc_ctrl_value &= FLD_DIF_SPEC_INV;
1819 		dif_misc_ctrl_value |= 0x3a023F11;
1820 	} else if (standard & V4L2_STD_PAL_I) {
1821 		status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32,
1822 					   DIF_PLL_CTRL, 0, 31, 0x6503bc0c);
1823 		status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32,
1824 					   DIF_PLL_CTRL1, 0, 31, 0xbd038c85);
1825 		status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32,
1826 					   DIF_PLL_CTRL2, 0, 31, 0x1db4640a);
1827 		status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32,
1828 					   DIF_PLL_CTRL3, 0, 31, 0x00008800);
1829 		status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32,
1830 					   DIF_AGC_IF_REF, 0, 31, 0x444C1380);
1831 		status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32,
1832 					   DIF_AGC_CTRL_IF, 0, 31, 0xDA302600);
1833 		status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32,
1834 					   DIF_AGC_CTRL_INT, 0, 31, 0xDA261700);
1835 		status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32,
1836 					   DIF_AGC_CTRL_RF, 0, 31, 0xDA262600);
1837 		status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32,
1838 					   DIF_AGC_IF_INT_CURRENT, 0, 31,
1839 					   0x26001700);
1840 		status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32,
1841 					   DIF_AGC_RF_CURRENT, 0, 31,
1842 					   0x00002660);
1843 		status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32,
1844 					   DIF_VIDEO_AGC_CTRL, 0, 31,
1845 					   0x72500800);
1846 		status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32,
1847 					   DIF_VID_AUD_OVERRIDE, 0, 31,
1848 					   0x27000100);
1849 		status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32,
1850 					   DIF_AV_SEP_CTRL, 0, 31, 0x5F39A934);
1851 		status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32,
1852 					   DIF_COMP_FLT_CTRL, 0, 31,
1853 					   0x00000000);
1854 		status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32,
1855 					   DIF_SRC_PHASE_INC, 0, 31,
1856 					   0x1befbf06);
1857 		status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32,
1858 					   DIF_SRC_GAIN_CONTROL, 0, 31,
1859 					   0x000035e8);
1860 		status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32,
1861 					   DIF_RPT_VARIANCE, 0, 31, 0x00000000);
1862 		/* Save the Spec Inversion value */
1863 		dif_misc_ctrl_value &= FLD_DIF_SPEC_INV;
1864 		dif_misc_ctrl_value |= 0x3a033F11;
1865 	} else if (standard & V4L2_STD_PAL_M) {
1866 		/* improved Low Frequency Phase Noise */
1867 		status = vid_blk_write_word(dev, DIF_PLL_CTRL, 0xFF01FF0C);
1868 		status = vid_blk_write_word(dev, DIF_PLL_CTRL1, 0xbd038c85);
1869 		status = vid_blk_write_word(dev, DIF_PLL_CTRL2, 0x1db4640a);
1870 		status = vid_blk_write_word(dev, DIF_PLL_CTRL3, 0x00008800);
1871 		status = vid_blk_write_word(dev, DIF_AGC_IF_REF, 0x444C1380);
1872 		status = vid_blk_write_word(dev, DIF_AGC_IF_INT_CURRENT,
1873 						0x26001700);
1874 		status = vid_blk_write_word(dev, DIF_AGC_RF_CURRENT,
1875 						0x00002660);
1876 		status = vid_blk_write_word(dev, DIF_VIDEO_AGC_CTRL,
1877 						0x72500800);
1878 		status = vid_blk_write_word(dev, DIF_VID_AUD_OVERRIDE,
1879 						0x27000100);
1880 		status = vid_blk_write_word(dev, DIF_AV_SEP_CTRL, 0x012c405d);
1881 		status = vid_blk_write_word(dev, DIF_COMP_FLT_CTRL,
1882 						0x009f50c1);
1883 		status = vid_blk_write_word(dev, DIF_SRC_PHASE_INC,
1884 						0x1befbf06);
1885 		status = vid_blk_write_word(dev, DIF_SRC_GAIN_CONTROL,
1886 						0x000035e8);
1887 		status = vid_blk_write_word(dev, DIF_SOFT_RST_CTRL_REVB,
1888 						0x00000000);
1889 		/* Save the Spec Inversion value */
1890 		dif_misc_ctrl_value &= FLD_DIF_SPEC_INV;
1891 		dif_misc_ctrl_value |= 0x3A0A3F10;
1892 	} else if (standard & (V4L2_STD_PAL_N | V4L2_STD_PAL_Nc)) {
1893 		/* improved Low Frequency Phase Noise */
1894 		status = vid_blk_write_word(dev, DIF_PLL_CTRL, 0xFF01FF0C);
1895 		status = vid_blk_write_word(dev, DIF_PLL_CTRL1, 0xbd038c85);
1896 		status = vid_blk_write_word(dev, DIF_PLL_CTRL2, 0x1db4640a);
1897 		status = vid_blk_write_word(dev, DIF_PLL_CTRL3, 0x00008800);
1898 		status = vid_blk_write_word(dev, DIF_AGC_IF_REF, 0x444C1380);
1899 		status = vid_blk_write_word(dev, DIF_AGC_IF_INT_CURRENT,
1900 						0x26001700);
1901 		status = vid_blk_write_word(dev, DIF_AGC_RF_CURRENT,
1902 						0x00002660);
1903 		status = vid_blk_write_word(dev, DIF_VIDEO_AGC_CTRL,
1904 						0x72500800);
1905 		status = vid_blk_write_word(dev, DIF_VID_AUD_OVERRIDE,
1906 						0x27000100);
1907 		status = vid_blk_write_word(dev, DIF_AV_SEP_CTRL,
1908 						0x012c405d);
1909 		status = vid_blk_write_word(dev, DIF_COMP_FLT_CTRL,
1910 						0x009f50c1);
1911 		status = vid_blk_write_word(dev, DIF_SRC_PHASE_INC,
1912 						0x1befbf06);
1913 		status = vid_blk_write_word(dev, DIF_SRC_GAIN_CONTROL,
1914 						0x000035e8);
1915 		status = vid_blk_write_word(dev, DIF_SOFT_RST_CTRL_REVB,
1916 						0x00000000);
1917 		/* Save the Spec Inversion value */
1918 		dif_misc_ctrl_value &= FLD_DIF_SPEC_INV;
1919 		dif_misc_ctrl_value = 0x3A093F10;
1920 	} else if (standard &
1921 		  (V4L2_STD_SECAM_B | V4L2_STD_SECAM_D | V4L2_STD_SECAM_G |
1922 		   V4L2_STD_SECAM_K | V4L2_STD_SECAM_K1)) {
1923 
1924 		status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32,
1925 					   DIF_PLL_CTRL, 0, 31, 0x6503bc0c);
1926 		status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32,
1927 					   DIF_PLL_CTRL1, 0, 31, 0xbd038c85);
1928 		status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32,
1929 					   DIF_PLL_CTRL2, 0, 31, 0x1db4640a);
1930 		status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32,
1931 					   DIF_PLL_CTRL3, 0, 31, 0x00008800);
1932 		status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32,
1933 					   DIF_AGC_IF_REF, 0, 31, 0x888C0380);
1934 		status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32,
1935 					   DIF_AGC_CTRL_IF, 0, 31, 0xe0262600);
1936 		status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32,
1937 					   DIF_AGC_CTRL_INT, 0, 31, 0xc2171700);
1938 		status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32,
1939 					   DIF_AGC_CTRL_RF, 0, 31, 0xc2262600);
1940 		status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32,
1941 					   DIF_AGC_IF_INT_CURRENT, 0, 31,
1942 					   0x26001700);
1943 		status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32,
1944 					   DIF_AGC_RF_CURRENT, 0, 31,
1945 					   0x00002660);
1946 		status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32,
1947 					   DIF_VID_AUD_OVERRIDE, 0, 31,
1948 					   0x27000100);
1949 		status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32,
1950 					   DIF_AV_SEP_CTRL, 0, 31, 0x3F3530ec);
1951 		status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32,
1952 					   DIF_COMP_FLT_CTRL, 0, 31,
1953 					   0x00000000);
1954 		status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32,
1955 					   DIF_SRC_PHASE_INC, 0, 31,
1956 					   0x1befbf06);
1957 		status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32,
1958 					   DIF_SRC_GAIN_CONTROL, 0, 31,
1959 					   0x000035e8);
1960 		status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32,
1961 					   DIF_RPT_VARIANCE, 0, 31, 0x00000000);
1962 		status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32,
1963 					   DIF_VIDEO_AGC_CTRL, 0, 31,
1964 					   0xf4000000);
1965 
1966 		/* Save the Spec Inversion value */
1967 		dif_misc_ctrl_value &= FLD_DIF_SPEC_INV;
1968 		dif_misc_ctrl_value |= 0x3a023F11;
1969 	} else if (standard & (V4L2_STD_SECAM_L | V4L2_STD_SECAM_LC)) {
1970 		/* Is it SECAM_L1? */
1971 		status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32,
1972 					   DIF_PLL_CTRL, 0, 31, 0x6503bc0c);
1973 		status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32,
1974 					   DIF_PLL_CTRL1, 0, 31, 0xbd038c85);
1975 		status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32,
1976 					   DIF_PLL_CTRL2, 0, 31, 0x1db4640a);
1977 		status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32,
1978 					   DIF_PLL_CTRL3, 0, 31, 0x00008800);
1979 		status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32,
1980 					   DIF_AGC_IF_REF, 0, 31, 0x888C0380);
1981 		status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32,
1982 					   DIF_AGC_CTRL_IF, 0, 31, 0xe0262600);
1983 		status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32,
1984 					   DIF_AGC_CTRL_INT, 0, 31, 0xc2171700);
1985 		status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32,
1986 					   DIF_AGC_CTRL_RF, 0, 31, 0xc2262600);
1987 		status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32,
1988 					   DIF_AGC_IF_INT_CURRENT, 0, 31,
1989 					   0x26001700);
1990 		status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32,
1991 					   DIF_AGC_RF_CURRENT, 0, 31,
1992 					   0x00002660);
1993 		status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32,
1994 					   DIF_VID_AUD_OVERRIDE, 0, 31,
1995 					   0x27000100);
1996 		status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32,
1997 					   DIF_AV_SEP_CTRL, 0, 31, 0x3F3530ec);
1998 		status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32,
1999 					   DIF_COMP_FLT_CTRL, 0, 31,
2000 					   0x00000000);
2001 		status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32,
2002 					   DIF_SRC_PHASE_INC, 0, 31,
2003 					   0x1befbf06);
2004 		status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32,
2005 					   DIF_SRC_GAIN_CONTROL, 0, 31,
2006 					   0x000035e8);
2007 		status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32,
2008 					   DIF_RPT_VARIANCE, 0, 31, 0x00000000);
2009 		status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32,
2010 					   DIF_VIDEO_AGC_CTRL, 0, 31,
2011 					   0xf2560000);
2012 
2013 		/* Save the Spec Inversion value */
2014 		dif_misc_ctrl_value &= FLD_DIF_SPEC_INV;
2015 		dif_misc_ctrl_value |= 0x3a023F11;
2016 
2017 	} else if (standard & V4L2_STD_NTSC_M) {
2018 		/* V4L2_STD_NTSC_M (75 IRE Setup) Or
2019 		   V4L2_STD_NTSC_M_JP (Japan,  0 IRE Setup) */
2020 
2021 		/* For NTSC the centre frequency of video coming out of
2022 		   sidewinder is around 7.1MHz or 3.6MHz depending on the
2023 		   spectral inversion. so for a non spectrally inverted channel
2024 		   the pll freq word is 0x03420c49
2025 		 */
2026 
2027 		status = vid_blk_write_word(dev, DIF_PLL_CTRL, 0x6503BC0C);
2028 		status = vid_blk_write_word(dev, DIF_PLL_CTRL1, 0xBD038C85);
2029 		status = vid_blk_write_word(dev, DIF_PLL_CTRL2, 0x1DB4640A);
2030 		status = vid_blk_write_word(dev, DIF_PLL_CTRL3, 0x00008800);
2031 		status = vid_blk_write_word(dev, DIF_AGC_IF_REF, 0x444C0380);
2032 		status = vid_blk_write_word(dev, DIF_AGC_IF_INT_CURRENT,
2033 						0x26001700);
2034 		status = vid_blk_write_word(dev, DIF_AGC_RF_CURRENT,
2035 						0x00002660);
2036 		status = vid_blk_write_word(dev, DIF_VIDEO_AGC_CTRL,
2037 						0x04000800);
2038 		status = vid_blk_write_word(dev, DIF_VID_AUD_OVERRIDE,
2039 						0x27000100);
2040 		status = vid_blk_write_word(dev, DIF_AV_SEP_CTRL, 0x01296e1f);
2041 
2042 		status = vid_blk_write_word(dev, DIF_COMP_FLT_CTRL,
2043 						0x009f50c1);
2044 		status = vid_blk_write_word(dev, DIF_SRC_PHASE_INC,
2045 						0x1befbf06);
2046 		status = vid_blk_write_word(dev, DIF_SRC_GAIN_CONTROL,
2047 						0x000035e8);
2048 
2049 		status = vid_blk_write_word(dev, DIF_AGC_CTRL_IF, 0xC2262600);
2050 		status = vid_blk_write_word(dev, DIF_AGC_CTRL_INT,
2051 						0xC2262600);
2052 		status = vid_blk_write_word(dev, DIF_AGC_CTRL_RF, 0xC2262600);
2053 
2054 		/* Save the Spec Inversion value */
2055 		dif_misc_ctrl_value &= FLD_DIF_SPEC_INV;
2056 		dif_misc_ctrl_value |= 0x3a003F10;
2057 	} else {
2058 		/* default PAL BG */
2059 		status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32,
2060 					   DIF_PLL_CTRL, 0, 31, 0x6503bc0c);
2061 		status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32,
2062 					   DIF_PLL_CTRL1, 0, 31, 0xbd038c85);
2063 		status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32,
2064 					   DIF_PLL_CTRL2, 0, 31, 0x1db4640a);
2065 		status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32,
2066 					   DIF_PLL_CTRL3, 0, 31, 0x00008800);
2067 		status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32,
2068 					   DIF_AGC_IF_REF, 0, 31, 0x444C1380);
2069 		status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32,
2070 					   DIF_AGC_CTRL_IF, 0, 31, 0xDA302600);
2071 		status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32,
2072 					   DIF_AGC_CTRL_INT, 0, 31, 0xDA261700);
2073 		status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32,
2074 					   DIF_AGC_CTRL_RF, 0, 31, 0xDA262600);
2075 		status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32,
2076 					   DIF_AGC_IF_INT_CURRENT, 0, 31,
2077 					   0x26001700);
2078 		status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32,
2079 					   DIF_AGC_RF_CURRENT, 0, 31,
2080 					   0x00002660);
2081 		status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32,
2082 					   DIF_VIDEO_AGC_CTRL, 0, 31,
2083 					   0x72500800);
2084 		status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32,
2085 					   DIF_VID_AUD_OVERRIDE, 0, 31,
2086 					   0x27000100);
2087 		status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32,
2088 					   DIF_AV_SEP_CTRL, 0, 31, 0x3F3530EC);
2089 		status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32,
2090 					   DIF_COMP_FLT_CTRL, 0, 31,
2091 					   0x00A653A8);
2092 		status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32,
2093 					   DIF_SRC_PHASE_INC, 0, 31,
2094 					   0x1befbf06);
2095 		status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32,
2096 					   DIF_SRC_GAIN_CONTROL, 0, 31,
2097 					   0x000035e8);
2098 		status = cx231xx_reg_mask_write(dev, VID_BLK_I2C_ADDRESS, 32,
2099 					   DIF_RPT_VARIANCE, 0, 31, 0x00000000);
2100 		/* Save the Spec Inversion value */
2101 		dif_misc_ctrl_value &= FLD_DIF_SPEC_INV;
2102 		dif_misc_ctrl_value |= 0x3a013F11;
2103 	}
2104 
2105 	/* The AGC values should be the same for all standards,
2106 	   AUD_SRC_SEL[19] should always be disabled    */
2107 	dif_misc_ctrl_value &= ~FLD_DIF_AUD_SRC_SEL;
2108 
2109 	/* It is still possible to get Set Standard calls even when we
2110 	   are in FM mode.
2111 	   This is done to override the value for FM. */
2112 	if (dev->active_mode == V4L2_TUNER_RADIO)
2113 		dif_misc_ctrl_value = 0x7a080000;
2114 
2115 	/* Write the calculated value for misc ontrol register      */
2116 	status = vid_blk_write_word(dev, DIF_MISC_CTRL, dif_misc_ctrl_value);
2117 
2118 	return status;
2119 }
2120 
2121 int cx231xx_tuner_pre_channel_change(struct cx231xx *dev)
2122 {
2123 	int status = 0;
2124 	u32 dwval;
2125 
2126 	/* Set the RF and IF k_agc values to 3 */
2127 	status = vid_blk_read_word(dev, DIF_AGC_IF_REF, &dwval);
2128 	dwval &= ~(FLD_DIF_K_AGC_RF | FLD_DIF_K_AGC_IF);
2129 	dwval |= 0x33000000;
2130 
2131 	status = vid_blk_write_word(dev, DIF_AGC_IF_REF, dwval);
2132 
2133 	return status;
2134 }
2135 
2136 int cx231xx_tuner_post_channel_change(struct cx231xx *dev)
2137 {
2138 	int status = 0;
2139 	u32 dwval;
2140 	dev_dbg(dev->dev, "%s: dev->tuner_type =0%d\n",
2141 		__func__, dev->tuner_type);
2142 	/* Set the RF and IF k_agc values to 4 for PAL/NTSC and 8 for
2143 	 * SECAM L/B/D standards */
2144 	status = vid_blk_read_word(dev, DIF_AGC_IF_REF, &dwval);
2145 	dwval &= ~(FLD_DIF_K_AGC_RF | FLD_DIF_K_AGC_IF);
2146 
2147 	if (dev->norm & (V4L2_STD_SECAM_L | V4L2_STD_SECAM_B |
2148 			 V4L2_STD_SECAM_D)) {
2149 			if (dev->tuner_type == TUNER_NXP_TDA18271) {
2150 				dwval &= ~FLD_DIF_IF_REF;
2151 				dwval |= 0x88000300;
2152 			} else
2153 				dwval |= 0x88000000;
2154 		} else {
2155 			if (dev->tuner_type == TUNER_NXP_TDA18271) {
2156 				dwval &= ~FLD_DIF_IF_REF;
2157 				dwval |= 0xCC000300;
2158 			} else
2159 				dwval |= 0x44000000;
2160 		}
2161 
2162 	status = vid_blk_write_word(dev, DIF_AGC_IF_REF, dwval);
2163 
2164 	return status == sizeof(dwval) ? 0 : -EIO;
2165 }
2166 
2167 /******************************************************************************
2168  *        	    I 2 S - B L O C K    C O N T R O L   functions            *
2169  ******************************************************************************/
2170 int cx231xx_i2s_blk_initialize(struct cx231xx *dev)
2171 {
2172 	int status = 0;
2173 	u32 value;
2174 
2175 	status = cx231xx_read_i2c_data(dev, I2S_BLK_DEVICE_ADDRESS,
2176 				       CH_PWR_CTRL1, 1, &value, 1);
2177 	/* enables clock to delta-sigma and decimation filter */
2178 	value |= 0x80;
2179 	status = cx231xx_write_i2c_data(dev, I2S_BLK_DEVICE_ADDRESS,
2180 					CH_PWR_CTRL1, 1, value, 1);
2181 	/* power up all channel */
2182 	status = cx231xx_write_i2c_data(dev, I2S_BLK_DEVICE_ADDRESS,
2183 					CH_PWR_CTRL2, 1, 0x00, 1);
2184 
2185 	return status;
2186 }
2187 
2188 int cx231xx_i2s_blk_update_power_control(struct cx231xx *dev,
2189 					enum AV_MODE avmode)
2190 {
2191 	int status = 0;
2192 	u32 value = 0;
2193 
2194 	if (avmode != POLARIS_AVMODE_ENXTERNAL_AV) {
2195 		status = cx231xx_read_i2c_data(dev, I2S_BLK_DEVICE_ADDRESS,
2196 					  CH_PWR_CTRL2, 1, &value, 1);
2197 		value |= 0xfe;
2198 		status = cx231xx_write_i2c_data(dev, I2S_BLK_DEVICE_ADDRESS,
2199 						CH_PWR_CTRL2, 1, value, 1);
2200 	} else {
2201 		status = cx231xx_write_i2c_data(dev, I2S_BLK_DEVICE_ADDRESS,
2202 						CH_PWR_CTRL2, 1, 0x00, 1);
2203 	}
2204 
2205 	return status;
2206 }
2207 
2208 /* set i2s_blk for audio input types */
2209 int cx231xx_i2s_blk_set_audio_input(struct cx231xx *dev, u8 audio_input)
2210 {
2211 	int status = 0;
2212 
2213 	switch (audio_input) {
2214 	case CX231XX_AMUX_LINE_IN:
2215 		status = cx231xx_write_i2c_data(dev, I2S_BLK_DEVICE_ADDRESS,
2216 						CH_PWR_CTRL2, 1, 0x00, 1);
2217 		status = cx231xx_write_i2c_data(dev, I2S_BLK_DEVICE_ADDRESS,
2218 						CH_PWR_CTRL1, 1, 0x80, 1);
2219 		break;
2220 	case CX231XX_AMUX_VIDEO:
2221 	default:
2222 		break;
2223 	}
2224 
2225 	dev->ctl_ainput = audio_input;
2226 
2227 	return status;
2228 }
2229 
2230 /******************************************************************************
2231  *                  P O W E R      C O N T R O L   functions                  *
2232  ******************************************************************************/
2233 int cx231xx_set_power_mode(struct cx231xx *dev, enum AV_MODE mode)
2234 {
2235 	u8 value[4] = { 0, 0, 0, 0 };
2236 	u32 tmp = 0;
2237 	int status = 0;
2238 
2239 	if (dev->power_mode != mode)
2240 		dev->power_mode = mode;
2241 	else {
2242 		dev_dbg(dev->dev, "%s: mode = %d, No Change req.\n",
2243 			 __func__, mode);
2244 		return 0;
2245 	}
2246 
2247 	status = cx231xx_read_ctrl_reg(dev, VRT_GET_REGISTER, PWR_CTL_EN, value,
2248 				       4);
2249 	if (status < 0)
2250 		return status;
2251 
2252 	tmp = le32_to_cpu(*((__le32 *) value));
2253 
2254 	switch (mode) {
2255 	case POLARIS_AVMODE_ENXTERNAL_AV:
2256 
2257 		tmp &= (~PWR_MODE_MASK);
2258 
2259 		tmp |= PWR_AV_EN;
2260 		value[0] = (u8) tmp;
2261 		value[1] = (u8) (tmp >> 8);
2262 		value[2] = (u8) (tmp >> 16);
2263 		value[3] = (u8) (tmp >> 24);
2264 		status = cx231xx_write_ctrl_reg(dev, VRT_SET_REGISTER,
2265 						PWR_CTL_EN, value, 4);
2266 		msleep(PWR_SLEEP_INTERVAL);
2267 
2268 		tmp |= PWR_ISO_EN;
2269 		value[0] = (u8) tmp;
2270 		value[1] = (u8) (tmp >> 8);
2271 		value[2] = (u8) (tmp >> 16);
2272 		value[3] = (u8) (tmp >> 24);
2273 		status =
2274 		    cx231xx_write_ctrl_reg(dev, VRT_SET_REGISTER, PWR_CTL_EN,
2275 					   value, 4);
2276 		msleep(PWR_SLEEP_INTERVAL);
2277 
2278 		tmp |= POLARIS_AVMODE_ENXTERNAL_AV;
2279 		value[0] = (u8) tmp;
2280 		value[1] = (u8) (tmp >> 8);
2281 		value[2] = (u8) (tmp >> 16);
2282 		value[3] = (u8) (tmp >> 24);
2283 		status = cx231xx_write_ctrl_reg(dev, VRT_SET_REGISTER,
2284 						PWR_CTL_EN, value, 4);
2285 
2286 		/* reset state of xceive tuner */
2287 		dev->xc_fw_load_done = 0;
2288 		break;
2289 
2290 	case POLARIS_AVMODE_ANALOGT_TV:
2291 
2292 		tmp |= PWR_DEMOD_EN;
2293 		value[0] = (u8) tmp;
2294 		value[1] = (u8) (tmp >> 8);
2295 		value[2] = (u8) (tmp >> 16);
2296 		value[3] = (u8) (tmp >> 24);
2297 		status = cx231xx_write_ctrl_reg(dev, VRT_SET_REGISTER,
2298 						PWR_CTL_EN, value, 4);
2299 		msleep(PWR_SLEEP_INTERVAL);
2300 
2301 		if (!(tmp & PWR_TUNER_EN)) {
2302 			tmp |= (PWR_TUNER_EN);
2303 			value[0] = (u8) tmp;
2304 			value[1] = (u8) (tmp >> 8);
2305 			value[2] = (u8) (tmp >> 16);
2306 			value[3] = (u8) (tmp >> 24);
2307 			status = cx231xx_write_ctrl_reg(dev, VRT_SET_REGISTER,
2308 							PWR_CTL_EN, value, 4);
2309 			msleep(PWR_SLEEP_INTERVAL);
2310 		}
2311 
2312 		if (!(tmp & PWR_AV_EN)) {
2313 			tmp |= PWR_AV_EN;
2314 			value[0] = (u8) tmp;
2315 			value[1] = (u8) (tmp >> 8);
2316 			value[2] = (u8) (tmp >> 16);
2317 			value[3] = (u8) (tmp >> 24);
2318 			status = cx231xx_write_ctrl_reg(dev, VRT_SET_REGISTER,
2319 							PWR_CTL_EN, value, 4);
2320 			msleep(PWR_SLEEP_INTERVAL);
2321 		}
2322 		if (!(tmp & PWR_ISO_EN)) {
2323 			tmp |= PWR_ISO_EN;
2324 			value[0] = (u8) tmp;
2325 			value[1] = (u8) (tmp >> 8);
2326 			value[2] = (u8) (tmp >> 16);
2327 			value[3] = (u8) (tmp >> 24);
2328 			status = cx231xx_write_ctrl_reg(dev, VRT_SET_REGISTER,
2329 							PWR_CTL_EN, value, 4);
2330 			msleep(PWR_SLEEP_INTERVAL);
2331 		}
2332 
2333 		if (!(tmp & POLARIS_AVMODE_ANALOGT_TV)) {
2334 			tmp |= POLARIS_AVMODE_ANALOGT_TV;
2335 			value[0] = (u8) tmp;
2336 			value[1] = (u8) (tmp >> 8);
2337 			value[2] = (u8) (tmp >> 16);
2338 			value[3] = (u8) (tmp >> 24);
2339 			status = cx231xx_write_ctrl_reg(dev, VRT_SET_REGISTER,
2340 							PWR_CTL_EN, value, 4);
2341 			msleep(PWR_SLEEP_INTERVAL);
2342 		}
2343 
2344 		if (dev->board.tuner_type != TUNER_ABSENT) {
2345 			/* reset the Tuner */
2346 			if (dev->board.tuner_gpio)
2347 				cx231xx_gpio_set(dev, dev->board.tuner_gpio);
2348 
2349 			if (dev->cx231xx_reset_analog_tuner)
2350 				dev->cx231xx_reset_analog_tuner(dev);
2351 		}
2352 
2353 		break;
2354 
2355 	case POLARIS_AVMODE_DIGITAL:
2356 		if (!(tmp & PWR_TUNER_EN)) {
2357 			tmp |= (PWR_TUNER_EN);
2358 			value[0] = (u8) tmp;
2359 			value[1] = (u8) (tmp >> 8);
2360 			value[2] = (u8) (tmp >> 16);
2361 			value[3] = (u8) (tmp >> 24);
2362 			status = cx231xx_write_ctrl_reg(dev, VRT_SET_REGISTER,
2363 							PWR_CTL_EN, value, 4);
2364 			msleep(PWR_SLEEP_INTERVAL);
2365 		}
2366 		if (!(tmp & PWR_AV_EN)) {
2367 			tmp |= PWR_AV_EN;
2368 			value[0] = (u8) tmp;
2369 			value[1] = (u8) (tmp >> 8);
2370 			value[2] = (u8) (tmp >> 16);
2371 			value[3] = (u8) (tmp >> 24);
2372 			status = cx231xx_write_ctrl_reg(dev, VRT_SET_REGISTER,
2373 							PWR_CTL_EN, value, 4);
2374 			msleep(PWR_SLEEP_INTERVAL);
2375 		}
2376 		if (!(tmp & PWR_ISO_EN)) {
2377 			tmp |= PWR_ISO_EN;
2378 			value[0] = (u8) tmp;
2379 			value[1] = (u8) (tmp >> 8);
2380 			value[2] = (u8) (tmp >> 16);
2381 			value[3] = (u8) (tmp >> 24);
2382 			status = cx231xx_write_ctrl_reg(dev, VRT_SET_REGISTER,
2383 							PWR_CTL_EN, value, 4);
2384 			msleep(PWR_SLEEP_INTERVAL);
2385 		}
2386 
2387 		tmp &= (~PWR_AV_MODE);
2388 		tmp |= POLARIS_AVMODE_DIGITAL;
2389 		value[0] = (u8) tmp;
2390 		value[1] = (u8) (tmp >> 8);
2391 		value[2] = (u8) (tmp >> 16);
2392 		value[3] = (u8) (tmp >> 24);
2393 		status = cx231xx_write_ctrl_reg(dev, VRT_SET_REGISTER,
2394 						PWR_CTL_EN, value, 4);
2395 		msleep(PWR_SLEEP_INTERVAL);
2396 
2397 		if (!(tmp & PWR_DEMOD_EN)) {
2398 			tmp |= PWR_DEMOD_EN;
2399 			value[0] = (u8) tmp;
2400 			value[1] = (u8) (tmp >> 8);
2401 			value[2] = (u8) (tmp >> 16);
2402 			value[3] = (u8) (tmp >> 24);
2403 			status = cx231xx_write_ctrl_reg(dev, VRT_SET_REGISTER,
2404 							PWR_CTL_EN, value, 4);
2405 			msleep(PWR_SLEEP_INTERVAL);
2406 		}
2407 
2408 		if (dev->board.tuner_type != TUNER_ABSENT) {
2409 			/* reset the Tuner */
2410 			if (dev->board.tuner_gpio)
2411 				cx231xx_gpio_set(dev, dev->board.tuner_gpio);
2412 
2413 			if (dev->cx231xx_reset_analog_tuner)
2414 				dev->cx231xx_reset_analog_tuner(dev);
2415 		}
2416 		break;
2417 
2418 	default:
2419 		break;
2420 	}
2421 
2422 	msleep(PWR_SLEEP_INTERVAL);
2423 
2424 	/* For power saving, only enable Pwr_resetout_n
2425 	   when digital TV is selected. */
2426 	if (mode == POLARIS_AVMODE_DIGITAL) {
2427 		tmp |= PWR_RESETOUT_EN;
2428 		value[0] = (u8) tmp;
2429 		value[1] = (u8) (tmp >> 8);
2430 		value[2] = (u8) (tmp >> 16);
2431 		value[3] = (u8) (tmp >> 24);
2432 		status = cx231xx_write_ctrl_reg(dev, VRT_SET_REGISTER,
2433 						PWR_CTL_EN, value, 4);
2434 		msleep(PWR_SLEEP_INTERVAL);
2435 	}
2436 
2437 	/* update power control for afe */
2438 	status = cx231xx_afe_update_power_control(dev, mode);
2439 
2440 	/* update power control for i2s_blk */
2441 	status = cx231xx_i2s_blk_update_power_control(dev, mode);
2442 
2443 	status = cx231xx_read_ctrl_reg(dev, VRT_GET_REGISTER, PWR_CTL_EN, value,
2444 				       4);
2445 
2446 	return status;
2447 }
2448 
2449 int cx231xx_power_suspend(struct cx231xx *dev)
2450 {
2451 	u8 value[4] = { 0, 0, 0, 0 };
2452 	u32 tmp = 0;
2453 	int status = 0;
2454 
2455 	status = cx231xx_read_ctrl_reg(dev, VRT_GET_REGISTER, PWR_CTL_EN,
2456 				       value, 4);
2457 	if (status > 0)
2458 		return status;
2459 
2460 	tmp = le32_to_cpu(*((__le32 *) value));
2461 	tmp &= (~PWR_MODE_MASK);
2462 
2463 	value[0] = (u8) tmp;
2464 	value[1] = (u8) (tmp >> 8);
2465 	value[2] = (u8) (tmp >> 16);
2466 	value[3] = (u8) (tmp >> 24);
2467 	status = cx231xx_write_ctrl_reg(dev, VRT_SET_REGISTER, PWR_CTL_EN,
2468 					value, 4);
2469 
2470 	return status;
2471 }
2472 
2473 /******************************************************************************
2474  *                  S T R E A M    C O N T R O L   functions                  *
2475  ******************************************************************************/
2476 int cx231xx_start_stream(struct cx231xx *dev, u32 ep_mask)
2477 {
2478 	u8 value[4] = { 0x0, 0x0, 0x0, 0x0 };
2479 	u32 tmp = 0;
2480 	int status = 0;
2481 
2482 	dev_dbg(dev->dev, "%s: ep_mask = %x\n", __func__, ep_mask);
2483 	status = cx231xx_read_ctrl_reg(dev, VRT_GET_REGISTER, EP_MODE_SET,
2484 				       value, 4);
2485 	if (status < 0)
2486 		return status;
2487 
2488 	tmp = le32_to_cpu(*((__le32 *) value));
2489 	tmp |= ep_mask;
2490 	value[0] = (u8) tmp;
2491 	value[1] = (u8) (tmp >> 8);
2492 	value[2] = (u8) (tmp >> 16);
2493 	value[3] = (u8) (tmp >> 24);
2494 
2495 	status = cx231xx_write_ctrl_reg(dev, VRT_SET_REGISTER, EP_MODE_SET,
2496 					value, 4);
2497 
2498 	return status;
2499 }
2500 
2501 int cx231xx_stop_stream(struct cx231xx *dev, u32 ep_mask)
2502 {
2503 	u8 value[4] = { 0x0, 0x0, 0x0, 0x0 };
2504 	u32 tmp = 0;
2505 	int status = 0;
2506 
2507 	dev_dbg(dev->dev, "%s: ep_mask = %x\n", __func__, ep_mask);
2508 	status =
2509 	    cx231xx_read_ctrl_reg(dev, VRT_GET_REGISTER, EP_MODE_SET, value, 4);
2510 	if (status < 0)
2511 		return status;
2512 
2513 	tmp = le32_to_cpu(*((__le32 *) value));
2514 	tmp &= (~ep_mask);
2515 	value[0] = (u8) tmp;
2516 	value[1] = (u8) (tmp >> 8);
2517 	value[2] = (u8) (tmp >> 16);
2518 	value[3] = (u8) (tmp >> 24);
2519 
2520 	status = cx231xx_write_ctrl_reg(dev, VRT_SET_REGISTER, EP_MODE_SET,
2521 					value, 4);
2522 
2523 	return status;
2524 }
2525 
2526 int cx231xx_initialize_stream_xfer(struct cx231xx *dev, u32 media_type)
2527 {
2528 	int status = 0;
2529 	u32 value = 0;
2530 	u8 val[4] = { 0, 0, 0, 0 };
2531 
2532 	if (dev->udev->speed == USB_SPEED_HIGH) {
2533 		switch (media_type) {
2534 		case Audio:
2535 			dev_dbg(dev->dev,
2536 				"%s: Audio enter HANC\n", __func__);
2537 			status =
2538 			    cx231xx_mode_register(dev, TS_MODE_REG, 0x9300);
2539 			break;
2540 
2541 		case Vbi:
2542 			dev_dbg(dev->dev,
2543 				"%s: set vanc registers\n", __func__);
2544 			status = cx231xx_mode_register(dev, TS_MODE_REG, 0x300);
2545 			break;
2546 
2547 		case Sliced_cc:
2548 			dev_dbg(dev->dev,
2549 				"%s: set hanc registers\n", __func__);
2550 			status =
2551 			    cx231xx_mode_register(dev, TS_MODE_REG, 0x1300);
2552 			break;
2553 
2554 		case Raw_Video:
2555 			dev_dbg(dev->dev,
2556 				"%s: set video registers\n", __func__);
2557 			status = cx231xx_mode_register(dev, TS_MODE_REG, 0x100);
2558 			break;
2559 
2560 		case TS1_serial_mode:
2561 			dev_dbg(dev->dev,
2562 				"%s: set ts1 registers", __func__);
2563 
2564 			if (dev->board.has_417) {
2565 				dev_dbg(dev->dev,
2566 					"%s: MPEG\n", __func__);
2567 				value &= 0xFFFFFFFC;
2568 				value |= 0x3;
2569 
2570 				status = cx231xx_mode_register(dev,
2571 							 TS_MODE_REG, value);
2572 
2573 				val[0] = 0x04;
2574 				val[1] = 0xA3;
2575 				val[2] = 0x3B;
2576 				val[3] = 0x00;
2577 				status = cx231xx_write_ctrl_reg(dev,
2578 							VRT_SET_REGISTER,
2579 							TS1_CFG_REG, val, 4);
2580 
2581 				val[0] = 0x00;
2582 				val[1] = 0x08;
2583 				val[2] = 0x00;
2584 				val[3] = 0x08;
2585 				status = cx231xx_write_ctrl_reg(dev,
2586 							VRT_SET_REGISTER,
2587 							TS1_LENGTH_REG, val, 4);
2588 			} else {
2589 				dev_dbg(dev->dev, "%s: BDA\n", __func__);
2590 				status = cx231xx_mode_register(dev,
2591 							 TS_MODE_REG, 0x101);
2592 				status = cx231xx_mode_register(dev,
2593 							TS1_CFG_REG, 0x010);
2594 			}
2595 			break;
2596 
2597 		case TS1_parallel_mode:
2598 			dev_dbg(dev->dev,
2599 				"%s: set ts1 parallel mode registers\n",
2600 				__func__);
2601 			status = cx231xx_mode_register(dev, TS_MODE_REG, 0x100);
2602 			status = cx231xx_mode_register(dev, TS1_CFG_REG, 0x400);
2603 			break;
2604 		}
2605 	} else {
2606 		status = cx231xx_mode_register(dev, TS_MODE_REG, 0x101);
2607 	}
2608 
2609 	return status;
2610 }
2611 
2612 int cx231xx_capture_start(struct cx231xx *dev, int start, u8 media_type)
2613 {
2614 	int rc = -1;
2615 	u32 ep_mask = -1;
2616 	struct pcb_config *pcb_config;
2617 
2618 	/* get EP for media type */
2619 	pcb_config = (struct pcb_config *)&dev->current_pcb_config;
2620 
2621 	if (pcb_config->config_num) {
2622 		switch (media_type) {
2623 		case Raw_Video:
2624 			ep_mask = ENABLE_EP4;	/* ep4  [00:1000] */
2625 			break;
2626 		case Audio:
2627 			ep_mask = ENABLE_EP3;	/* ep3  [00:0100] */
2628 			break;
2629 		case Vbi:
2630 			ep_mask = ENABLE_EP5;	/* ep5 [01:0000] */
2631 			break;
2632 		case Sliced_cc:
2633 			ep_mask = ENABLE_EP6;	/* ep6 [10:0000] */
2634 			break;
2635 		case TS1_serial_mode:
2636 		case TS1_parallel_mode:
2637 			ep_mask = ENABLE_EP1;	/* ep1 [00:0001] */
2638 			break;
2639 		case TS2:
2640 			ep_mask = ENABLE_EP2;	/* ep2 [00:0010] */
2641 			break;
2642 		}
2643 	}
2644 
2645 	if (start) {
2646 		rc = cx231xx_initialize_stream_xfer(dev, media_type);
2647 
2648 		if (rc < 0)
2649 			return rc;
2650 
2651 		/* enable video capture */
2652 		if (ep_mask > 0)
2653 			rc = cx231xx_start_stream(dev, ep_mask);
2654 	} else {
2655 		/* disable video capture */
2656 		if (ep_mask > 0)
2657 			rc = cx231xx_stop_stream(dev, ep_mask);
2658 	}
2659 
2660 	return rc;
2661 }
2662 EXPORT_SYMBOL_GPL(cx231xx_capture_start);
2663 
2664 /*****************************************************************************
2665 *                   G P I O   B I T control functions                        *
2666 ******************************************************************************/
2667 static int cx231xx_set_gpio_bit(struct cx231xx *dev, u32 gpio_bit, u32 gpio_val)
2668 {
2669 	int status = 0;
2670 
2671 	gpio_val = (__force u32)cpu_to_le32(gpio_val);
2672 	status = cx231xx_send_gpio_cmd(dev, gpio_bit, (u8 *)&gpio_val, 4, 0, 0);
2673 
2674 	return status;
2675 }
2676 
2677 static int cx231xx_get_gpio_bit(struct cx231xx *dev, u32 gpio_bit, u32 *gpio_val)
2678 {
2679 	__le32 tmp;
2680 	int status = 0;
2681 
2682 	status = cx231xx_send_gpio_cmd(dev, gpio_bit, (u8 *)&tmp, 4, 0, 1);
2683 	*gpio_val = le32_to_cpu(tmp);
2684 
2685 	return status;
2686 }
2687 
2688 /*
2689 * cx231xx_set_gpio_direction
2690 *      Sets the direction of the GPIO pin to input or output
2691 *
2692 * Parameters :
2693 *      pin_number : The GPIO Pin number to program the direction for
2694 *                   from 0 to 31
2695 *      pin_value : The Direction of the GPIO Pin under reference.
2696 *                      0 = Input direction
2697 *                      1 = Output direction
2698 */
2699 int cx231xx_set_gpio_direction(struct cx231xx *dev,
2700 			       int pin_number, int pin_value)
2701 {
2702 	int status = 0;
2703 	u32 value = 0;
2704 
2705 	/* Check for valid pin_number - if 32 , bail out */
2706 	if (pin_number >= 32)
2707 		return -EINVAL;
2708 
2709 	/* input */
2710 	if (pin_value == 0)
2711 		value = dev->gpio_dir & (~(1 << pin_number));	/* clear */
2712 	else
2713 		value = dev->gpio_dir | (1 << pin_number);
2714 
2715 	status = cx231xx_set_gpio_bit(dev, value, dev->gpio_val);
2716 
2717 	/* cache the value for future */
2718 	dev->gpio_dir = value;
2719 
2720 	return status;
2721 }
2722 
2723 /*
2724 * cx231xx_set_gpio_value
2725 *      Sets the value of the GPIO pin to Logic high or low. The Pin under
2726 *      reference should ALREADY BE SET IN OUTPUT MODE !!!!!!!!!
2727 *
2728 * Parameters :
2729 *      pin_number : The GPIO Pin number to program the direction for
2730 *      pin_value : The value of the GPIO Pin under reference.
2731 *                      0 = set it to 0
2732 *                      1 = set it to 1
2733 */
2734 int cx231xx_set_gpio_value(struct cx231xx *dev, int pin_number, int pin_value)
2735 {
2736 	int status = 0;
2737 	u32 value = 0;
2738 
2739 	/* Check for valid pin_number - if 0xFF , bail out */
2740 	if (pin_number >= 32)
2741 		return -EINVAL;
2742 
2743 	/* first do a sanity check - if the Pin is not output, make it output */
2744 	if ((dev->gpio_dir & (1 << pin_number)) == 0x00) {
2745 		/* It was in input mode */
2746 		value = dev->gpio_dir | (1 << pin_number);
2747 		dev->gpio_dir = value;
2748 		status = cx231xx_set_gpio_bit(dev, dev->gpio_dir,
2749 					      dev->gpio_val);
2750 		value = 0;
2751 	}
2752 
2753 	if (pin_value == 0)
2754 		value = dev->gpio_val & (~(1 << pin_number));
2755 	else
2756 		value = dev->gpio_val | (1 << pin_number);
2757 
2758 	/* store the value */
2759 	dev->gpio_val = value;
2760 
2761 	/* toggle bit0 of GP_IO */
2762 	status = cx231xx_set_gpio_bit(dev, dev->gpio_dir, dev->gpio_val);
2763 
2764 	return status;
2765 }
2766 
2767 /*****************************************************************************
2768 *                      G P I O I2C related functions                         *
2769 ******************************************************************************/
2770 int cx231xx_gpio_i2c_start(struct cx231xx *dev)
2771 {
2772 	int status = 0;
2773 
2774 	/* set SCL to output 1 ; set SDA to output 1 */
2775 	dev->gpio_dir |= 1 << dev->board.tuner_scl_gpio;
2776 	dev->gpio_dir |= 1 << dev->board.tuner_sda_gpio;
2777 	dev->gpio_val |= 1 << dev->board.tuner_scl_gpio;
2778 	dev->gpio_val |= 1 << dev->board.tuner_sda_gpio;
2779 
2780 	status = cx231xx_set_gpio_bit(dev, dev->gpio_dir, dev->gpio_val);
2781 	if (status < 0)
2782 		return -EINVAL;
2783 
2784 	/* set SCL to output 1; set SDA to output 0 */
2785 	dev->gpio_val |= 1 << dev->board.tuner_scl_gpio;
2786 	dev->gpio_val &= ~(1 << dev->board.tuner_sda_gpio);
2787 
2788 	status = cx231xx_set_gpio_bit(dev, dev->gpio_dir, dev->gpio_val);
2789 	if (status < 0)
2790 		return -EINVAL;
2791 
2792 	/* set SCL to output 0; set SDA to output 0      */
2793 	dev->gpio_val &= ~(1 << dev->board.tuner_scl_gpio);
2794 	dev->gpio_val &= ~(1 << dev->board.tuner_sda_gpio);
2795 
2796 	status = cx231xx_set_gpio_bit(dev, dev->gpio_dir, dev->gpio_val);
2797 	if (status < 0)
2798 		return -EINVAL;
2799 
2800 	return status;
2801 }
2802 
2803 int cx231xx_gpio_i2c_end(struct cx231xx *dev)
2804 {
2805 	int status = 0;
2806 
2807 	/* set SCL to output 0; set SDA to output 0      */
2808 	dev->gpio_dir |= 1 << dev->board.tuner_scl_gpio;
2809 	dev->gpio_dir |= 1 << dev->board.tuner_sda_gpio;
2810 
2811 	dev->gpio_val &= ~(1 << dev->board.tuner_scl_gpio);
2812 	dev->gpio_val &= ~(1 << dev->board.tuner_sda_gpio);
2813 
2814 	status = cx231xx_set_gpio_bit(dev, dev->gpio_dir, dev->gpio_val);
2815 	if (status < 0)
2816 		return -EINVAL;
2817 
2818 	/* set SCL to output 1; set SDA to output 0      */
2819 	dev->gpio_val |= 1 << dev->board.tuner_scl_gpio;
2820 	dev->gpio_val &= ~(1 << dev->board.tuner_sda_gpio);
2821 
2822 	status = cx231xx_set_gpio_bit(dev, dev->gpio_dir, dev->gpio_val);
2823 	if (status < 0)
2824 		return -EINVAL;
2825 
2826 	/* set SCL to input ,release SCL cable control
2827 	   set SDA to input ,release SDA cable control */
2828 	dev->gpio_dir &= ~(1 << dev->board.tuner_scl_gpio);
2829 	dev->gpio_dir &= ~(1 << dev->board.tuner_sda_gpio);
2830 
2831 	status =
2832 	    cx231xx_set_gpio_bit(dev, dev->gpio_dir, dev->gpio_val);
2833 	if (status < 0)
2834 		return -EINVAL;
2835 
2836 	return status;
2837 }
2838 
2839 int cx231xx_gpio_i2c_write_byte(struct cx231xx *dev, u8 data)
2840 {
2841 	int status = 0;
2842 	u8 i;
2843 
2844 	/* set SCL to output ; set SDA to output */
2845 	dev->gpio_dir |= 1 << dev->board.tuner_scl_gpio;
2846 	dev->gpio_dir |= 1 << dev->board.tuner_sda_gpio;
2847 
2848 	for (i = 0; i < 8; i++) {
2849 		if (((data << i) & 0x80) == 0) {
2850 			/* set SCL to output 0; set SDA to output 0     */
2851 			dev->gpio_val &= ~(1 << dev->board.tuner_scl_gpio);
2852 			dev->gpio_val &= ~(1 << dev->board.tuner_sda_gpio);
2853 			status = cx231xx_set_gpio_bit(dev, dev->gpio_dir,
2854 						      dev->gpio_val);
2855 
2856 			/* set SCL to output 1; set SDA to output 0     */
2857 			dev->gpio_val |= 1 << dev->board.tuner_scl_gpio;
2858 			status = cx231xx_set_gpio_bit(dev, dev->gpio_dir,
2859 						      dev->gpio_val);
2860 
2861 			/* set SCL to output 0; set SDA to output 0     */
2862 			dev->gpio_val &= ~(1 << dev->board.tuner_scl_gpio);
2863 			status = cx231xx_set_gpio_bit(dev, dev->gpio_dir,
2864 						      dev->gpio_val);
2865 		} else {
2866 			/* set SCL to output 0; set SDA to output 1     */
2867 			dev->gpio_val &= ~(1 << dev->board.tuner_scl_gpio);
2868 			dev->gpio_val |= 1 << dev->board.tuner_sda_gpio;
2869 			status = cx231xx_set_gpio_bit(dev, dev->gpio_dir,
2870 						      dev->gpio_val);
2871 
2872 			/* set SCL to output 1; set SDA to output 1     */
2873 			dev->gpio_val |= 1 << dev->board.tuner_scl_gpio;
2874 			status = cx231xx_set_gpio_bit(dev, dev->gpio_dir,
2875 						      dev->gpio_val);
2876 
2877 			/* set SCL to output 0; set SDA to output 1     */
2878 			dev->gpio_val &= ~(1 << dev->board.tuner_scl_gpio);
2879 			status = cx231xx_set_gpio_bit(dev, dev->gpio_dir,
2880 						      dev->gpio_val);
2881 		}
2882 	}
2883 	return status;
2884 }
2885 
2886 int cx231xx_gpio_i2c_read_byte(struct cx231xx *dev, u8 *buf)
2887 {
2888 	u8 value = 0;
2889 	int status = 0;
2890 	u32 gpio_logic_value = 0;
2891 	u8 i;
2892 
2893 	/* read byte */
2894 	for (i = 0; i < 8; i++) {	/* send write I2c addr */
2895 
2896 		/* set SCL to output 0; set SDA to input */
2897 		dev->gpio_val &= ~(1 << dev->board.tuner_scl_gpio);
2898 		status = cx231xx_set_gpio_bit(dev, dev->gpio_dir,
2899 					      dev->gpio_val);
2900 
2901 		/* set SCL to output 1; set SDA to input */
2902 		dev->gpio_val |= 1 << dev->board.tuner_scl_gpio;
2903 		status = cx231xx_set_gpio_bit(dev, dev->gpio_dir,
2904 					      dev->gpio_val);
2905 
2906 		/* get SDA data bit */
2907 		gpio_logic_value = dev->gpio_val;
2908 		status = cx231xx_get_gpio_bit(dev, dev->gpio_dir,
2909 					      &dev->gpio_val);
2910 		if ((dev->gpio_val & (1 << dev->board.tuner_sda_gpio)) != 0)
2911 			value |= (1 << (8 - i - 1));
2912 
2913 		dev->gpio_val = gpio_logic_value;
2914 	}
2915 
2916 	/* set SCL to output 0,finish the read latest SCL signal.
2917 	   !!!set SDA to input, never to modify SDA direction at
2918 	   the same times */
2919 	dev->gpio_val &= ~(1 << dev->board.tuner_scl_gpio);
2920 	status = cx231xx_set_gpio_bit(dev, dev->gpio_dir, dev->gpio_val);
2921 
2922 	/* store the value */
2923 	*buf = value & 0xff;
2924 
2925 	return status;
2926 }
2927 
2928 int cx231xx_gpio_i2c_read_ack(struct cx231xx *dev)
2929 {
2930 	int status = 0;
2931 	u32 gpio_logic_value = 0;
2932 	int nCnt = 10;
2933 	int nInit = nCnt;
2934 
2935 	/* clock stretch; set SCL to input; set SDA to input;
2936 	   get SCL value till SCL = 1 */
2937 	dev->gpio_dir &= ~(1 << dev->board.tuner_sda_gpio);
2938 	dev->gpio_dir &= ~(1 << dev->board.tuner_scl_gpio);
2939 
2940 	gpio_logic_value = dev->gpio_val;
2941 	status = cx231xx_set_gpio_bit(dev, dev->gpio_dir, dev->gpio_val);
2942 
2943 	do {
2944 		msleep(2);
2945 		status = cx231xx_get_gpio_bit(dev, dev->gpio_dir,
2946 					      &dev->gpio_val);
2947 		nCnt--;
2948 	} while (((dev->gpio_val &
2949 			  (1 << dev->board.tuner_scl_gpio)) == 0) &&
2950 			 (nCnt > 0));
2951 
2952 	if (nCnt == 0)
2953 		dev_dbg(dev->dev,
2954 			"No ACK after %d msec -GPIO I2C failed!",
2955 			nInit * 10);
2956 
2957 	/*
2958 	 * readAck
2959 	 * through clock stretch, slave has given a SCL signal,
2960 	 * so the SDA data can be directly read.
2961 	 */
2962 	status = cx231xx_get_gpio_bit(dev, dev->gpio_dir, &dev->gpio_val);
2963 
2964 	if ((dev->gpio_val & 1 << dev->board.tuner_sda_gpio) == 0) {
2965 		dev->gpio_val = gpio_logic_value;
2966 		dev->gpio_val &= ~(1 << dev->board.tuner_sda_gpio);
2967 		status = 0;
2968 	} else {
2969 		dev->gpio_val = gpio_logic_value;
2970 		dev->gpio_val |= (1 << dev->board.tuner_sda_gpio);
2971 	}
2972 
2973 	/* read SDA end, set the SCL to output 0, after this operation,
2974 	   SDA direction can be changed. */
2975 	dev->gpio_val = gpio_logic_value;
2976 	dev->gpio_dir |= (1 << dev->board.tuner_scl_gpio);
2977 	dev->gpio_val &= ~(1 << dev->board.tuner_scl_gpio);
2978 	status = cx231xx_set_gpio_bit(dev, dev->gpio_dir, dev->gpio_val);
2979 
2980 	return status;
2981 }
2982 
2983 int cx231xx_gpio_i2c_write_ack(struct cx231xx *dev)
2984 {
2985 	int status = 0;
2986 
2987 	/* set SDA to ouput */
2988 	dev->gpio_dir |= 1 << dev->board.tuner_sda_gpio;
2989 	status = cx231xx_set_gpio_bit(dev, dev->gpio_dir, dev->gpio_val);
2990 
2991 	/* set SCL = 0 (output); set SDA = 0 (output) */
2992 	dev->gpio_val &= ~(1 << dev->board.tuner_sda_gpio);
2993 	dev->gpio_val &= ~(1 << dev->board.tuner_scl_gpio);
2994 	status = cx231xx_set_gpio_bit(dev, dev->gpio_dir, dev->gpio_val);
2995 
2996 	/* set SCL = 1 (output); set SDA = 0 (output) */
2997 	dev->gpio_val |= 1 << dev->board.tuner_scl_gpio;
2998 	status = cx231xx_set_gpio_bit(dev, dev->gpio_dir, dev->gpio_val);
2999 
3000 	/* set SCL = 0 (output); set SDA = 0 (output) */
3001 	dev->gpio_val &= ~(1 << dev->board.tuner_scl_gpio);
3002 	status = cx231xx_set_gpio_bit(dev, dev->gpio_dir, dev->gpio_val);
3003 
3004 	/* set SDA to input,and then the slave will read data from SDA. */
3005 	dev->gpio_dir &= ~(1 << dev->board.tuner_sda_gpio);
3006 	status = cx231xx_set_gpio_bit(dev, dev->gpio_dir, dev->gpio_val);
3007 
3008 	return status;
3009 }
3010 
3011 int cx231xx_gpio_i2c_write_nak(struct cx231xx *dev)
3012 {
3013 	int status = 0;
3014 
3015 	/* set scl to output ; set sda to input */
3016 	dev->gpio_dir |= 1 << dev->board.tuner_scl_gpio;
3017 	dev->gpio_dir &= ~(1 << dev->board.tuner_sda_gpio);
3018 	status = cx231xx_set_gpio_bit(dev, dev->gpio_dir, dev->gpio_val);
3019 
3020 	/* set scl to output 0; set sda to input */
3021 	dev->gpio_val &= ~(1 << dev->board.tuner_scl_gpio);
3022 	status = cx231xx_set_gpio_bit(dev, dev->gpio_dir, dev->gpio_val);
3023 
3024 	/* set scl to output 1; set sda to input */
3025 	dev->gpio_val |= 1 << dev->board.tuner_scl_gpio;
3026 	status = cx231xx_set_gpio_bit(dev, dev->gpio_dir, dev->gpio_val);
3027 
3028 	return status;
3029 }
3030 
3031 /*****************************************************************************
3032 *                      G P I O I2C related functions                         *
3033 ******************************************************************************/
3034 /* cx231xx_gpio_i2c_read
3035  * Function to read data from gpio based I2C interface
3036  */
3037 int cx231xx_gpio_i2c_read(struct cx231xx *dev, u8 dev_addr, u8 *buf, u8 len)
3038 {
3039 	int status = 0;
3040 	int i = 0;
3041 
3042 	/* get the lock */
3043 	mutex_lock(&dev->gpio_i2c_lock);
3044 
3045 	/* start */
3046 	status = cx231xx_gpio_i2c_start(dev);
3047 
3048 	/* write dev_addr */
3049 	status = cx231xx_gpio_i2c_write_byte(dev, (dev_addr << 1) + 1);
3050 
3051 	/* readAck */
3052 	status = cx231xx_gpio_i2c_read_ack(dev);
3053 
3054 	/* read data */
3055 	for (i = 0; i < len; i++) {
3056 		/* read data */
3057 		buf[i] = 0;
3058 		status = cx231xx_gpio_i2c_read_byte(dev, &buf[i]);
3059 
3060 		if ((i + 1) != len) {
3061 			/* only do write ack if we more length */
3062 			status = cx231xx_gpio_i2c_write_ack(dev);
3063 		}
3064 	}
3065 
3066 	/* write NAK - inform reads are complete */
3067 	status = cx231xx_gpio_i2c_write_nak(dev);
3068 
3069 	/* write end */
3070 	status = cx231xx_gpio_i2c_end(dev);
3071 
3072 	/* release the lock */
3073 	mutex_unlock(&dev->gpio_i2c_lock);
3074 
3075 	return status;
3076 }
3077 
3078 /* cx231xx_gpio_i2c_write
3079  * Function to write data to gpio based I2C interface
3080  */
3081 int cx231xx_gpio_i2c_write(struct cx231xx *dev, u8 dev_addr, u8 *buf, u8 len)
3082 {
3083 	int i = 0;
3084 
3085 	/* get the lock */
3086 	mutex_lock(&dev->gpio_i2c_lock);
3087 
3088 	/* start */
3089 	cx231xx_gpio_i2c_start(dev);
3090 
3091 	/* write dev_addr */
3092 	cx231xx_gpio_i2c_write_byte(dev, dev_addr << 1);
3093 
3094 	/* read Ack */
3095 	cx231xx_gpio_i2c_read_ack(dev);
3096 
3097 	for (i = 0; i < len; i++) {
3098 		/* Write data */
3099 		cx231xx_gpio_i2c_write_byte(dev, buf[i]);
3100 
3101 		/* read Ack */
3102 		cx231xx_gpio_i2c_read_ack(dev);
3103 	}
3104 
3105 	/* write End */
3106 	cx231xx_gpio_i2c_end(dev);
3107 
3108 	/* release the lock */
3109 	mutex_unlock(&dev->gpio_i2c_lock);
3110 
3111 	return 0;
3112 }
3113