1 /*
2 * Copyright (C) 2005-2009 Texas Instruments Inc
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
8 *
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
13 *
14 * CCDC hardware module for DM355
15 * ------------------------------
16 *
17 * This module is for configuring DM355 CCD controller of VPFE to capture
18 * Raw yuv or Bayer RGB data from a decoder. CCDC has several modules
19 * such as Defect Pixel Correction, Color Space Conversion etc to
20 * pre-process the Bayer RGB data, before writing it to SDRAM.
21 *
22 * TODO: 1) Raw bayer parameter settings and bayer capture
23 * 2) Split module parameter structure to module specific ioctl structs
24 * 3) add support for lense shading correction
25 * 4) investigate if enum used for user space type definition
26 * to be replaced by #defines or integer
27 */
28 #include <linux/platform_device.h>
29 #include <linux/uaccess.h>
30 #include <linux/videodev2.h>
31 #include <linux/err.h>
32 #include <linux/module.h>
33
34 #include <media/davinci/dm355_ccdc.h>
35 #include <media/davinci/vpss.h>
36
37 #include "dm355_ccdc_regs.h"
38 #include "ccdc_hw_device.h"
39
40 MODULE_LICENSE("GPL");
41 MODULE_DESCRIPTION("CCDC Driver for DM355");
42 MODULE_AUTHOR("Texas Instruments");
43
44 static struct ccdc_oper_config {
45 struct device *dev;
46 /* CCDC interface type */
47 enum vpfe_hw_if_type if_type;
48 /* Raw Bayer configuration */
49 struct ccdc_params_raw bayer;
50 /* YCbCr configuration */
51 struct ccdc_params_ycbcr ycbcr;
52 /* ccdc base address */
53 void __iomem *base_addr;
54 } ccdc_cfg = {
55 /* Raw configurations */
56 .bayer = {
57 .pix_fmt = CCDC_PIXFMT_RAW,
58 .frm_fmt = CCDC_FRMFMT_PROGRESSIVE,
59 .win = CCDC_WIN_VGA,
60 .fid_pol = VPFE_PINPOL_POSITIVE,
61 .vd_pol = VPFE_PINPOL_POSITIVE,
62 .hd_pol = VPFE_PINPOL_POSITIVE,
63 .gain = {
64 .r_ye = 256,
65 .gb_g = 256,
66 .gr_cy = 256,
67 .b_mg = 256
68 },
69 .config_params = {
70 .datasft = 2,
71 .mfilt1 = CCDC_NO_MEDIAN_FILTER1,
72 .mfilt2 = CCDC_NO_MEDIAN_FILTER2,
73 .alaw = {
74 .gamma_wd = 2,
75 },
76 .blk_clamp = {
77 .sample_pixel = 1,
78 .dc_sub = 25
79 },
80 .col_pat_field0 = {
81 .olop = CCDC_GREEN_BLUE,
82 .olep = CCDC_BLUE,
83 .elop = CCDC_RED,
84 .elep = CCDC_GREEN_RED
85 },
86 .col_pat_field1 = {
87 .olop = CCDC_GREEN_BLUE,
88 .olep = CCDC_BLUE,
89 .elop = CCDC_RED,
90 .elep = CCDC_GREEN_RED
91 },
92 },
93 },
94 /* YCbCr configuration */
95 .ycbcr = {
96 .win = CCDC_WIN_PAL,
97 .pix_fmt = CCDC_PIXFMT_YCBCR_8BIT,
98 .frm_fmt = CCDC_FRMFMT_INTERLACED,
99 .fid_pol = VPFE_PINPOL_POSITIVE,
100 .vd_pol = VPFE_PINPOL_POSITIVE,
101 .hd_pol = VPFE_PINPOL_POSITIVE,
102 .bt656_enable = 1,
103 .pix_order = CCDC_PIXORDER_CBYCRY,
104 .buf_type = CCDC_BUFTYPE_FLD_INTERLEAVED
105 },
106 };
107
108
109 /* Raw Bayer formats */
110 static u32 ccdc_raw_bayer_pix_formats[] =
111 {V4L2_PIX_FMT_SBGGR8, V4L2_PIX_FMT_SBGGR16};
112
113 /* Raw YUV formats */
114 static u32 ccdc_raw_yuv_pix_formats[] =
115 {V4L2_PIX_FMT_UYVY, V4L2_PIX_FMT_YUYV};
116
117 /* register access routines */
regr(u32 offset)118 static inline u32 regr(u32 offset)
119 {
120 return __raw_readl(ccdc_cfg.base_addr + offset);
121 }
122
regw(u32 val,u32 offset)123 static inline void regw(u32 val, u32 offset)
124 {
125 __raw_writel(val, ccdc_cfg.base_addr + offset);
126 }
127
ccdc_enable(int en)128 static void ccdc_enable(int en)
129 {
130 unsigned int temp;
131 temp = regr(SYNCEN);
132 temp &= (~CCDC_SYNCEN_VDHDEN_MASK);
133 temp |= (en & CCDC_SYNCEN_VDHDEN_MASK);
134 regw(temp, SYNCEN);
135 }
136
ccdc_enable_output_to_sdram(int en)137 static void ccdc_enable_output_to_sdram(int en)
138 {
139 unsigned int temp;
140 temp = regr(SYNCEN);
141 temp &= (~(CCDC_SYNCEN_WEN_MASK));
142 temp |= ((en << CCDC_SYNCEN_WEN_SHIFT) & CCDC_SYNCEN_WEN_MASK);
143 regw(temp, SYNCEN);
144 }
145
ccdc_config_gain_offset(void)146 static void ccdc_config_gain_offset(void)
147 {
148 /* configure gain */
149 regw(ccdc_cfg.bayer.gain.r_ye, RYEGAIN);
150 regw(ccdc_cfg.bayer.gain.gr_cy, GRCYGAIN);
151 regw(ccdc_cfg.bayer.gain.gb_g, GBGGAIN);
152 regw(ccdc_cfg.bayer.gain.b_mg, BMGGAIN);
153 /* configure offset */
154 regw(ccdc_cfg.bayer.ccdc_offset, OFFSET);
155 }
156
157 /*
158 * ccdc_restore_defaults()
159 * This function restore power on defaults in the ccdc registers
160 */
ccdc_restore_defaults(void)161 static int ccdc_restore_defaults(void)
162 {
163 int i;
164
165 dev_dbg(ccdc_cfg.dev, "\nstarting ccdc_restore_defaults...");
166 /* set all registers to zero */
167 for (i = 0; i <= CCDC_REG_LAST; i += 4)
168 regw(0, i);
169
170 /* now override the values with power on defaults in registers */
171 regw(MODESET_DEFAULT, MODESET);
172 /* no culling support */
173 regw(CULH_DEFAULT, CULH);
174 regw(CULV_DEFAULT, CULV);
175 /* Set default Gain and Offset */
176 ccdc_cfg.bayer.gain.r_ye = GAIN_DEFAULT;
177 ccdc_cfg.bayer.gain.gb_g = GAIN_DEFAULT;
178 ccdc_cfg.bayer.gain.gr_cy = GAIN_DEFAULT;
179 ccdc_cfg.bayer.gain.b_mg = GAIN_DEFAULT;
180 ccdc_config_gain_offset();
181 regw(OUTCLIP_DEFAULT, OUTCLIP);
182 regw(LSCCFG2_DEFAULT, LSCCFG2);
183 /* select ccdc input */
184 if (vpss_select_ccdc_source(VPSS_CCDCIN)) {
185 dev_dbg(ccdc_cfg.dev, "\ncouldn't select ccdc input source");
186 return -EFAULT;
187 }
188 /* select ccdc clock */
189 if (vpss_enable_clock(VPSS_CCDC_CLOCK, 1) < 0) {
190 dev_dbg(ccdc_cfg.dev, "\ncouldn't enable ccdc clock");
191 return -EFAULT;
192 }
193 dev_dbg(ccdc_cfg.dev, "\nEnd of ccdc_restore_defaults...");
194 return 0;
195 }
196
ccdc_open(struct device * device)197 static int ccdc_open(struct device *device)
198 {
199 return ccdc_restore_defaults();
200 }
201
ccdc_close(struct device * device)202 static int ccdc_close(struct device *device)
203 {
204 /* disable clock */
205 vpss_enable_clock(VPSS_CCDC_CLOCK, 0);
206 /* do nothing for now */
207 return 0;
208 }
209 /*
210 * ccdc_setwin()
211 * This function will configure the window size to
212 * be capture in CCDC reg.
213 */
ccdc_setwin(struct v4l2_rect * image_win,enum ccdc_frmfmt frm_fmt,int ppc)214 static void ccdc_setwin(struct v4l2_rect *image_win,
215 enum ccdc_frmfmt frm_fmt, int ppc)
216 {
217 int horz_start, horz_nr_pixels;
218 int vert_start, vert_nr_lines;
219 int mid_img = 0;
220
221 dev_dbg(ccdc_cfg.dev, "\nStarting ccdc_setwin...");
222
223 /*
224 * ppc - per pixel count. indicates how many pixels per cell
225 * output to SDRAM. example, for ycbcr, it is one y and one c, so 2.
226 * raw capture this is 1
227 */
228 horz_start = image_win->left << (ppc - 1);
229 horz_nr_pixels = ((image_win->width) << (ppc - 1)) - 1;
230
231 /* Writing the horizontal info into the registers */
232 regw(horz_start, SPH);
233 regw(horz_nr_pixels, NPH);
234 vert_start = image_win->top;
235
236 if (frm_fmt == CCDC_FRMFMT_INTERLACED) {
237 vert_nr_lines = (image_win->height >> 1) - 1;
238 vert_start >>= 1;
239 /* Since first line doesn't have any data */
240 vert_start += 1;
241 /* configure VDINT0 and VDINT1 */
242 regw(vert_start, VDINT0);
243 } else {
244 /* Since first line doesn't have any data */
245 vert_start += 1;
246 vert_nr_lines = image_win->height - 1;
247 /* configure VDINT0 and VDINT1 */
248 mid_img = vert_start + (image_win->height / 2);
249 regw(vert_start, VDINT0);
250 regw(mid_img, VDINT1);
251 }
252 regw(vert_start & CCDC_START_VER_ONE_MASK, SLV0);
253 regw(vert_start & CCDC_START_VER_TWO_MASK, SLV1);
254 regw(vert_nr_lines & CCDC_NUM_LINES_VER, NLV);
255 dev_dbg(ccdc_cfg.dev, "\nEnd of ccdc_setwin...");
256 }
257
258 /* This function will configure CCDC for YCbCr video capture */
ccdc_config_ycbcr(void)259 static void ccdc_config_ycbcr(void)
260 {
261 struct ccdc_params_ycbcr *params = &ccdc_cfg.ycbcr;
262 u32 temp;
263
264 /* first set the CCDC power on defaults values in all registers */
265 dev_dbg(ccdc_cfg.dev, "\nStarting ccdc_config_ycbcr...");
266 ccdc_restore_defaults();
267
268 /* configure pixel format & video frame format */
269 temp = (((params->pix_fmt & CCDC_INPUT_MODE_MASK) <<
270 CCDC_INPUT_MODE_SHIFT) |
271 ((params->frm_fmt & CCDC_FRM_FMT_MASK) <<
272 CCDC_FRM_FMT_SHIFT));
273
274 /* setup BT.656 sync mode */
275 if (params->bt656_enable) {
276 regw(CCDC_REC656IF_BT656_EN, REC656IF);
277 /*
278 * configure the FID, VD, HD pin polarity fld,hd pol positive,
279 * vd negative, 8-bit pack mode
280 */
281 temp |= CCDC_VD_POL_NEGATIVE;
282 } else { /* y/c external sync mode */
283 temp |= (((params->fid_pol & CCDC_FID_POL_MASK) <<
284 CCDC_FID_POL_SHIFT) |
285 ((params->hd_pol & CCDC_HD_POL_MASK) <<
286 CCDC_HD_POL_SHIFT) |
287 ((params->vd_pol & CCDC_VD_POL_MASK) <<
288 CCDC_VD_POL_SHIFT));
289 }
290
291 /* pack the data to 8-bit */
292 temp |= CCDC_DATA_PACK_ENABLE;
293
294 regw(temp, MODESET);
295
296 /* configure video window */
297 ccdc_setwin(¶ms->win, params->frm_fmt, 2);
298
299 /* configure the order of y cb cr in SD-RAM */
300 temp = (params->pix_order << CCDC_Y8POS_SHIFT);
301 temp |= CCDC_LATCH_ON_VSYNC_DISABLE | CCDC_CCDCFG_FIDMD_NO_LATCH_VSYNC;
302 regw(temp, CCDCFG);
303
304 /*
305 * configure the horizontal line offset. This is done by rounding up
306 * width to a multiple of 16 pixels and multiply by two to account for
307 * y:cb:cr 4:2:2 data
308 */
309 regw(((params->win.width * 2 + 31) >> 5), HSIZE);
310
311 /* configure the memory line offset */
312 if (params->buf_type == CCDC_BUFTYPE_FLD_INTERLEAVED) {
313 /* two fields are interleaved in memory */
314 regw(CCDC_SDOFST_FIELD_INTERLEAVED, SDOFST);
315 }
316
317 dev_dbg(ccdc_cfg.dev, "\nEnd of ccdc_config_ycbcr...\n");
318 }
319
320 /*
321 * ccdc_config_black_clamp()
322 * configure parameters for Optical Black Clamp
323 */
ccdc_config_black_clamp(struct ccdc_black_clamp * bclamp)324 static void ccdc_config_black_clamp(struct ccdc_black_clamp *bclamp)
325 {
326 u32 val;
327
328 if (!bclamp->b_clamp_enable) {
329 /* configure DCSub */
330 regw(bclamp->dc_sub & CCDC_BLK_DC_SUB_MASK, DCSUB);
331 regw(0x0000, CLAMP);
332 return;
333 }
334 /* Enable the Black clamping, set sample lines and pixels */
335 val = (bclamp->start_pixel & CCDC_BLK_ST_PXL_MASK) |
336 ((bclamp->sample_pixel & CCDC_BLK_SAMPLE_LN_MASK) <<
337 CCDC_BLK_SAMPLE_LN_SHIFT) | CCDC_BLK_CLAMP_ENABLE;
338 regw(val, CLAMP);
339
340 /* If Black clamping is enable then make dcsub 0 */
341 val = (bclamp->sample_ln & CCDC_NUM_LINE_CALC_MASK)
342 << CCDC_NUM_LINE_CALC_SHIFT;
343 regw(val, DCSUB);
344 }
345
346 /*
347 * ccdc_config_black_compense()
348 * configure parameters for Black Compensation
349 */
ccdc_config_black_compense(struct ccdc_black_compensation * bcomp)350 static void ccdc_config_black_compense(struct ccdc_black_compensation *bcomp)
351 {
352 u32 val;
353
354 val = (bcomp->b & CCDC_BLK_COMP_MASK) |
355 ((bcomp->gb & CCDC_BLK_COMP_MASK) <<
356 CCDC_BLK_COMP_GB_COMP_SHIFT);
357 regw(val, BLKCMP1);
358
359 val = ((bcomp->gr & CCDC_BLK_COMP_MASK) <<
360 CCDC_BLK_COMP_GR_COMP_SHIFT) |
361 ((bcomp->r & CCDC_BLK_COMP_MASK) <<
362 CCDC_BLK_COMP_R_COMP_SHIFT);
363 regw(val, BLKCMP0);
364 }
365
366 /*
367 * ccdc_write_dfc_entry()
368 * write an entry in the dfc table.
369 */
ccdc_write_dfc_entry(int index,struct ccdc_vertical_dft * dfc)370 static int ccdc_write_dfc_entry(int index, struct ccdc_vertical_dft *dfc)
371 {
372 /* TODO This is to be re-visited and adjusted */
373 #define DFC_WRITE_WAIT_COUNT 1000
374 u32 val, count = DFC_WRITE_WAIT_COUNT;
375
376 regw(dfc->dft_corr_vert[index], DFCMEM0);
377 regw(dfc->dft_corr_horz[index], DFCMEM1);
378 regw(dfc->dft_corr_sub1[index], DFCMEM2);
379 regw(dfc->dft_corr_sub2[index], DFCMEM3);
380 regw(dfc->dft_corr_sub3[index], DFCMEM4);
381 /* set WR bit to write */
382 val = regr(DFCMEMCTL) | CCDC_DFCMEMCTL_DFCMWR_MASK;
383 regw(val, DFCMEMCTL);
384
385 /*
386 * Assume, it is very short. If we get an error, we need to
387 * adjust this value
388 */
389 while (regr(DFCMEMCTL) & CCDC_DFCMEMCTL_DFCMWR_MASK)
390 count--;
391 /*
392 * TODO We expect the count to be non-zero to be successful. Adjust
393 * the count if write requires more time
394 */
395
396 if (count) {
397 dev_err(ccdc_cfg.dev, "defect table write timeout !!!\n");
398 return -1;
399 }
400 return 0;
401 }
402
403 /*
404 * ccdc_config_vdfc()
405 * configure parameters for Vertical Defect Correction
406 */
ccdc_config_vdfc(struct ccdc_vertical_dft * dfc)407 static int ccdc_config_vdfc(struct ccdc_vertical_dft *dfc)
408 {
409 u32 val;
410 int i;
411
412 /* Configure General Defect Correction. The table used is from IPIPE */
413 val = dfc->gen_dft_en & CCDC_DFCCTL_GDFCEN_MASK;
414
415 /* Configure Vertical Defect Correction if needed */
416 if (!dfc->ver_dft_en) {
417 /* Enable only General Defect Correction */
418 regw(val, DFCCTL);
419 return 0;
420 }
421
422 if (dfc->table_size > CCDC_DFT_TABLE_SIZE)
423 return -EINVAL;
424
425 val |= CCDC_DFCCTL_VDFC_DISABLE;
426 val |= (dfc->dft_corr_ctl.vdfcsl & CCDC_DFCCTL_VDFCSL_MASK) <<
427 CCDC_DFCCTL_VDFCSL_SHIFT;
428 val |= (dfc->dft_corr_ctl.vdfcuda & CCDC_DFCCTL_VDFCUDA_MASK) <<
429 CCDC_DFCCTL_VDFCUDA_SHIFT;
430 val |= (dfc->dft_corr_ctl.vdflsft & CCDC_DFCCTL_VDFLSFT_MASK) <<
431 CCDC_DFCCTL_VDFLSFT_SHIFT;
432 regw(val , DFCCTL);
433
434 /* clear address ptr to offset 0 */
435 val = CCDC_DFCMEMCTL_DFCMARST_MASK << CCDC_DFCMEMCTL_DFCMARST_SHIFT;
436
437 /* write defect table entries */
438 for (i = 0; i < dfc->table_size; i++) {
439 /* increment address for non zero index */
440 if (i != 0)
441 val = CCDC_DFCMEMCTL_INC_ADDR;
442 regw(val, DFCMEMCTL);
443 if (ccdc_write_dfc_entry(i, dfc) < 0)
444 return -EFAULT;
445 }
446
447 /* update saturation level and enable dfc */
448 regw(dfc->saturation_ctl & CCDC_VDC_DFCVSAT_MASK, DFCVSAT);
449 val = regr(DFCCTL) | (CCDC_DFCCTL_VDFCEN_MASK <<
450 CCDC_DFCCTL_VDFCEN_SHIFT);
451 regw(val, DFCCTL);
452 return 0;
453 }
454
455 /*
456 * ccdc_config_csc()
457 * configure parameters for color space conversion
458 * Each register CSCM0-7 has two values in S8Q5 format.
459 */
ccdc_config_csc(struct ccdc_csc * csc)460 static void ccdc_config_csc(struct ccdc_csc *csc)
461 {
462 u32 val1 = 0, val2;
463 int i;
464
465 if (!csc->enable)
466 return;
467
468 /* Enable the CSC sub-module */
469 regw(CCDC_CSC_ENABLE, CSCCTL);
470
471 /* Converting the co-eff as per the format of the register */
472 for (i = 0; i < CCDC_CSC_COEFF_TABLE_SIZE; i++) {
473 if ((i % 2) == 0) {
474 /* CSCM - LSB */
475 val1 = (csc->coeff[i].integer &
476 CCDC_CSC_COEF_INTEG_MASK)
477 << CCDC_CSC_COEF_INTEG_SHIFT;
478 /*
479 * convert decimal part to binary. Use 2 decimal
480 * precision, user values range from .00 - 0.99
481 */
482 val1 |= (((csc->coeff[i].decimal &
483 CCDC_CSC_COEF_DECIMAL_MASK) *
484 CCDC_CSC_DEC_MAX) / 100);
485 } else {
486
487 /* CSCM - MSB */
488 val2 = (csc->coeff[i].integer &
489 CCDC_CSC_COEF_INTEG_MASK)
490 << CCDC_CSC_COEF_INTEG_SHIFT;
491 val2 |= (((csc->coeff[i].decimal &
492 CCDC_CSC_COEF_DECIMAL_MASK) *
493 CCDC_CSC_DEC_MAX) / 100);
494 val2 <<= CCDC_CSCM_MSB_SHIFT;
495 val2 |= val1;
496 regw(val2, (CSCM0 + ((i - 1) << 1)));
497 }
498 }
499 }
500
501 /*
502 * ccdc_config_color_patterns()
503 * configure parameters for color patterns
504 */
ccdc_config_color_patterns(struct ccdc_col_pat * pat0,struct ccdc_col_pat * pat1)505 static void ccdc_config_color_patterns(struct ccdc_col_pat *pat0,
506 struct ccdc_col_pat *pat1)
507 {
508 u32 val;
509
510 val = (pat0->olop | (pat0->olep << 2) | (pat0->elop << 4) |
511 (pat0->elep << 6) | (pat1->olop << 8) | (pat1->olep << 10) |
512 (pat1->elop << 12) | (pat1->elep << 14));
513 regw(val, COLPTN);
514 }
515
516 /* This function will configure CCDC for Raw mode image capture */
ccdc_config_raw(void)517 static int ccdc_config_raw(void)
518 {
519 struct ccdc_params_raw *params = &ccdc_cfg.bayer;
520 struct ccdc_config_params_raw *config_params =
521 &ccdc_cfg.bayer.config_params;
522 unsigned int val;
523
524 dev_dbg(ccdc_cfg.dev, "\nStarting ccdc_config_raw...");
525
526 /* restore power on defaults to register */
527 ccdc_restore_defaults();
528
529 /* CCDCFG register:
530 * set CCD Not to swap input since input is RAW data
531 * set FID detection function to Latch at V-Sync
532 * set WENLOG - ccdc valid area to AND
533 * set TRGSEL to WENBIT
534 * set EXTRG to DISABLE
535 * disable latching function on VSYNC - shadowed registers
536 */
537 regw(CCDC_YCINSWP_RAW | CCDC_CCDCFG_FIDMD_LATCH_VSYNC |
538 CCDC_CCDCFG_WENLOG_AND | CCDC_CCDCFG_TRGSEL_WEN |
539 CCDC_CCDCFG_EXTRG_DISABLE | CCDC_LATCH_ON_VSYNC_DISABLE, CCDCFG);
540
541 /*
542 * Set VDHD direction to input, input type to raw input
543 * normal data polarity, do not use external WEN
544 */
545 val = (CCDC_VDHDOUT_INPUT | CCDC_RAW_IP_MODE | CCDC_DATAPOL_NORMAL |
546 CCDC_EXWEN_DISABLE);
547
548 /*
549 * Configure the vertical sync polarity (MODESET.VDPOL), horizontal
550 * sync polarity (MODESET.HDPOL), field id polarity (MODESET.FLDPOL),
551 * frame format(progressive or interlace), & pixel format (Input mode)
552 */
553 val |= (((params->vd_pol & CCDC_VD_POL_MASK) << CCDC_VD_POL_SHIFT) |
554 ((params->hd_pol & CCDC_HD_POL_MASK) << CCDC_HD_POL_SHIFT) |
555 ((params->fid_pol & CCDC_FID_POL_MASK) << CCDC_FID_POL_SHIFT) |
556 ((params->frm_fmt & CCDC_FRM_FMT_MASK) << CCDC_FRM_FMT_SHIFT) |
557 ((params->pix_fmt & CCDC_PIX_FMT_MASK) << CCDC_PIX_FMT_SHIFT));
558
559 /* set pack for alaw compression */
560 if ((config_params->data_sz == CCDC_DATA_8BITS) ||
561 config_params->alaw.enable)
562 val |= CCDC_DATA_PACK_ENABLE;
563
564 /* Configure for LPF */
565 if (config_params->lpf_enable)
566 val |= (config_params->lpf_enable & CCDC_LPF_MASK) <<
567 CCDC_LPF_SHIFT;
568
569 /* Configure the data shift */
570 val |= (config_params->datasft & CCDC_DATASFT_MASK) <<
571 CCDC_DATASFT_SHIFT;
572 regw(val , MODESET);
573 dev_dbg(ccdc_cfg.dev, "\nWriting 0x%x to MODESET...\n", val);
574
575 /* Configure the Median Filter threshold */
576 regw((config_params->med_filt_thres) & CCDC_MED_FILT_THRESH, MEDFILT);
577
578 /* Configure GAMMAWD register. defaur 11-2, and Mosaic cfa pattern */
579 val = CCDC_GAMMA_BITS_11_2 << CCDC_GAMMAWD_INPUT_SHIFT |
580 CCDC_CFA_MOSAIC;
581
582 /* Enable and configure aLaw register if needed */
583 if (config_params->alaw.enable) {
584 val |= (CCDC_ALAW_ENABLE |
585 ((config_params->alaw.gamma_wd &
586 CCDC_ALAW_GAMMA_WD_MASK) <<
587 CCDC_GAMMAWD_INPUT_SHIFT));
588 }
589
590 /* Configure Median filter1 & filter2 */
591 val |= ((config_params->mfilt1 << CCDC_MFILT1_SHIFT) |
592 (config_params->mfilt2 << CCDC_MFILT2_SHIFT));
593
594 regw(val, GAMMAWD);
595 dev_dbg(ccdc_cfg.dev, "\nWriting 0x%x to GAMMAWD...\n", val);
596
597 /* configure video window */
598 ccdc_setwin(¶ms->win, params->frm_fmt, 1);
599
600 /* Optical Clamp Averaging */
601 ccdc_config_black_clamp(&config_params->blk_clamp);
602
603 /* Black level compensation */
604 ccdc_config_black_compense(&config_params->blk_comp);
605
606 /* Vertical Defect Correction if needed */
607 if (ccdc_config_vdfc(&config_params->vertical_dft) < 0)
608 return -EFAULT;
609
610 /* color space conversion */
611 ccdc_config_csc(&config_params->csc);
612
613 /* color pattern */
614 ccdc_config_color_patterns(&config_params->col_pat_field0,
615 &config_params->col_pat_field1);
616
617 /* Configure the Gain & offset control */
618 ccdc_config_gain_offset();
619
620 dev_dbg(ccdc_cfg.dev, "\nWriting %x to COLPTN...\n", val);
621
622 /* Configure DATAOFST register */
623 val = (config_params->data_offset.horz_offset & CCDC_DATAOFST_MASK) <<
624 CCDC_DATAOFST_H_SHIFT;
625 val |= (config_params->data_offset.vert_offset & CCDC_DATAOFST_MASK) <<
626 CCDC_DATAOFST_V_SHIFT;
627 regw(val, DATAOFST);
628
629 /* configuring HSIZE register */
630 val = (params->horz_flip_enable & CCDC_HSIZE_FLIP_MASK) <<
631 CCDC_HSIZE_FLIP_SHIFT;
632
633 /* If pack 8 is enable then 1 pixel will take 1 byte */
634 if ((config_params->data_sz == CCDC_DATA_8BITS) ||
635 config_params->alaw.enable) {
636 val |= (((params->win.width) + 31) >> 5) &
637 CCDC_HSIZE_VAL_MASK;
638
639 /* adjust to multiple of 32 */
640 dev_dbg(ccdc_cfg.dev, "\nWriting 0x%x to HSIZE...\n",
641 (((params->win.width) + 31) >> 5) &
642 CCDC_HSIZE_VAL_MASK);
643 } else {
644 /* else one pixel will take 2 byte */
645 val |= (((params->win.width * 2) + 31) >> 5) &
646 CCDC_HSIZE_VAL_MASK;
647
648 dev_dbg(ccdc_cfg.dev, "\nWriting 0x%x to HSIZE...\n",
649 (((params->win.width * 2) + 31) >> 5) &
650 CCDC_HSIZE_VAL_MASK);
651 }
652 regw(val, HSIZE);
653
654 /* Configure SDOFST register */
655 if (params->frm_fmt == CCDC_FRMFMT_INTERLACED) {
656 if (params->image_invert_enable) {
657 /* For interlace inverse mode */
658 regw(CCDC_SDOFST_INTERLACE_INVERSE, SDOFST);
659 dev_dbg(ccdc_cfg.dev, "\nWriting %x to SDOFST...\n",
660 CCDC_SDOFST_INTERLACE_INVERSE);
661 } else {
662 /* For interlace non inverse mode */
663 regw(CCDC_SDOFST_INTERLACE_NORMAL, SDOFST);
664 dev_dbg(ccdc_cfg.dev, "\nWriting %x to SDOFST...\n",
665 CCDC_SDOFST_INTERLACE_NORMAL);
666 }
667 } else if (params->frm_fmt == CCDC_FRMFMT_PROGRESSIVE) {
668 if (params->image_invert_enable) {
669 /* For progessive inverse mode */
670 regw(CCDC_SDOFST_PROGRESSIVE_INVERSE, SDOFST);
671 dev_dbg(ccdc_cfg.dev, "\nWriting %x to SDOFST...\n",
672 CCDC_SDOFST_PROGRESSIVE_INVERSE);
673 } else {
674 /* For progessive non inverse mode */
675 regw(CCDC_SDOFST_PROGRESSIVE_NORMAL, SDOFST);
676 dev_dbg(ccdc_cfg.dev, "\nWriting %x to SDOFST...\n",
677 CCDC_SDOFST_PROGRESSIVE_NORMAL);
678 }
679 }
680 dev_dbg(ccdc_cfg.dev, "\nend of ccdc_config_raw...");
681 return 0;
682 }
683
ccdc_configure(void)684 static int ccdc_configure(void)
685 {
686 if (ccdc_cfg.if_type == VPFE_RAW_BAYER)
687 return ccdc_config_raw();
688 else
689 ccdc_config_ycbcr();
690 return 0;
691 }
692
ccdc_set_buftype(enum ccdc_buftype buf_type)693 static int ccdc_set_buftype(enum ccdc_buftype buf_type)
694 {
695 if (ccdc_cfg.if_type == VPFE_RAW_BAYER)
696 ccdc_cfg.bayer.buf_type = buf_type;
697 else
698 ccdc_cfg.ycbcr.buf_type = buf_type;
699 return 0;
700 }
ccdc_get_buftype(void)701 static enum ccdc_buftype ccdc_get_buftype(void)
702 {
703 if (ccdc_cfg.if_type == VPFE_RAW_BAYER)
704 return ccdc_cfg.bayer.buf_type;
705 return ccdc_cfg.ycbcr.buf_type;
706 }
707
ccdc_enum_pix(u32 * pix,int i)708 static int ccdc_enum_pix(u32 *pix, int i)
709 {
710 int ret = -EINVAL;
711 if (ccdc_cfg.if_type == VPFE_RAW_BAYER) {
712 if (i < ARRAY_SIZE(ccdc_raw_bayer_pix_formats)) {
713 *pix = ccdc_raw_bayer_pix_formats[i];
714 ret = 0;
715 }
716 } else {
717 if (i < ARRAY_SIZE(ccdc_raw_yuv_pix_formats)) {
718 *pix = ccdc_raw_yuv_pix_formats[i];
719 ret = 0;
720 }
721 }
722 return ret;
723 }
724
ccdc_set_pixel_format(u32 pixfmt)725 static int ccdc_set_pixel_format(u32 pixfmt)
726 {
727 struct ccdc_a_law *alaw = &ccdc_cfg.bayer.config_params.alaw;
728
729 if (ccdc_cfg.if_type == VPFE_RAW_BAYER) {
730 ccdc_cfg.bayer.pix_fmt = CCDC_PIXFMT_RAW;
731 if (pixfmt == V4L2_PIX_FMT_SBGGR8)
732 alaw->enable = 1;
733 else if (pixfmt != V4L2_PIX_FMT_SBGGR16)
734 return -EINVAL;
735 } else {
736 if (pixfmt == V4L2_PIX_FMT_YUYV)
737 ccdc_cfg.ycbcr.pix_order = CCDC_PIXORDER_YCBYCR;
738 else if (pixfmt == V4L2_PIX_FMT_UYVY)
739 ccdc_cfg.ycbcr.pix_order = CCDC_PIXORDER_CBYCRY;
740 else
741 return -EINVAL;
742 }
743 return 0;
744 }
ccdc_get_pixel_format(void)745 static u32 ccdc_get_pixel_format(void)
746 {
747 struct ccdc_a_law *alaw = &ccdc_cfg.bayer.config_params.alaw;
748 u32 pixfmt;
749
750 if (ccdc_cfg.if_type == VPFE_RAW_BAYER)
751 if (alaw->enable)
752 pixfmt = V4L2_PIX_FMT_SBGGR8;
753 else
754 pixfmt = V4L2_PIX_FMT_SBGGR16;
755 else {
756 if (ccdc_cfg.ycbcr.pix_order == CCDC_PIXORDER_YCBYCR)
757 pixfmt = V4L2_PIX_FMT_YUYV;
758 else
759 pixfmt = V4L2_PIX_FMT_UYVY;
760 }
761 return pixfmt;
762 }
ccdc_set_image_window(struct v4l2_rect * win)763 static int ccdc_set_image_window(struct v4l2_rect *win)
764 {
765 if (ccdc_cfg.if_type == VPFE_RAW_BAYER)
766 ccdc_cfg.bayer.win = *win;
767 else
768 ccdc_cfg.ycbcr.win = *win;
769 return 0;
770 }
771
ccdc_get_image_window(struct v4l2_rect * win)772 static void ccdc_get_image_window(struct v4l2_rect *win)
773 {
774 if (ccdc_cfg.if_type == VPFE_RAW_BAYER)
775 *win = ccdc_cfg.bayer.win;
776 else
777 *win = ccdc_cfg.ycbcr.win;
778 }
779
ccdc_get_line_length(void)780 static unsigned int ccdc_get_line_length(void)
781 {
782 struct ccdc_config_params_raw *config_params =
783 &ccdc_cfg.bayer.config_params;
784 unsigned int len;
785
786 if (ccdc_cfg.if_type == VPFE_RAW_BAYER) {
787 if ((config_params->alaw.enable) ||
788 (config_params->data_sz == CCDC_DATA_8BITS))
789 len = ccdc_cfg.bayer.win.width;
790 else
791 len = ccdc_cfg.bayer.win.width * 2;
792 } else
793 len = ccdc_cfg.ycbcr.win.width * 2;
794 return ALIGN(len, 32);
795 }
796
ccdc_set_frame_format(enum ccdc_frmfmt frm_fmt)797 static int ccdc_set_frame_format(enum ccdc_frmfmt frm_fmt)
798 {
799 if (ccdc_cfg.if_type == VPFE_RAW_BAYER)
800 ccdc_cfg.bayer.frm_fmt = frm_fmt;
801 else
802 ccdc_cfg.ycbcr.frm_fmt = frm_fmt;
803 return 0;
804 }
805
ccdc_get_frame_format(void)806 static enum ccdc_frmfmt ccdc_get_frame_format(void)
807 {
808 if (ccdc_cfg.if_type == VPFE_RAW_BAYER)
809 return ccdc_cfg.bayer.frm_fmt;
810 else
811 return ccdc_cfg.ycbcr.frm_fmt;
812 }
813
ccdc_getfid(void)814 static int ccdc_getfid(void)
815 {
816 return (regr(MODESET) >> 15) & 1;
817 }
818
819 /* misc operations */
ccdc_setfbaddr(unsigned long addr)820 static inline void ccdc_setfbaddr(unsigned long addr)
821 {
822 regw((addr >> 21) & 0x007f, STADRH);
823 regw((addr >> 5) & 0x0ffff, STADRL);
824 }
825
ccdc_set_hw_if_params(struct vpfe_hw_if_param * params)826 static int ccdc_set_hw_if_params(struct vpfe_hw_if_param *params)
827 {
828 ccdc_cfg.if_type = params->if_type;
829
830 switch (params->if_type) {
831 case VPFE_BT656:
832 case VPFE_YCBCR_SYNC_16:
833 case VPFE_YCBCR_SYNC_8:
834 ccdc_cfg.ycbcr.vd_pol = params->vdpol;
835 ccdc_cfg.ycbcr.hd_pol = params->hdpol;
836 break;
837 default:
838 /* TODO add support for raw bayer here */
839 return -EINVAL;
840 }
841 return 0;
842 }
843
844 static const struct ccdc_hw_device ccdc_hw_dev = {
845 .name = "DM355 CCDC",
846 .owner = THIS_MODULE,
847 .hw_ops = {
848 .open = ccdc_open,
849 .close = ccdc_close,
850 .enable = ccdc_enable,
851 .enable_out_to_sdram = ccdc_enable_output_to_sdram,
852 .set_hw_if_params = ccdc_set_hw_if_params,
853 .configure = ccdc_configure,
854 .set_buftype = ccdc_set_buftype,
855 .get_buftype = ccdc_get_buftype,
856 .enum_pix = ccdc_enum_pix,
857 .set_pixel_format = ccdc_set_pixel_format,
858 .get_pixel_format = ccdc_get_pixel_format,
859 .set_frame_format = ccdc_set_frame_format,
860 .get_frame_format = ccdc_get_frame_format,
861 .set_image_window = ccdc_set_image_window,
862 .get_image_window = ccdc_get_image_window,
863 .get_line_length = ccdc_get_line_length,
864 .setfbaddr = ccdc_setfbaddr,
865 .getfid = ccdc_getfid,
866 },
867 };
868
dm355_ccdc_probe(struct platform_device * pdev)869 static int dm355_ccdc_probe(struct platform_device *pdev)
870 {
871 void (*setup_pinmux)(void);
872 struct resource *res;
873 int status = 0;
874
875 /*
876 * first try to register with vpfe. If not correct platform, then we
877 * don't have to iomap
878 */
879 status = vpfe_register_ccdc_device(&ccdc_hw_dev);
880 if (status < 0)
881 return status;
882
883 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
884 if (!res) {
885 status = -ENODEV;
886 goto fail_nores;
887 }
888
889 res = request_mem_region(res->start, resource_size(res), res->name);
890 if (!res) {
891 status = -EBUSY;
892 goto fail_nores;
893 }
894
895 ccdc_cfg.base_addr = ioremap_nocache(res->start, resource_size(res));
896 if (!ccdc_cfg.base_addr) {
897 status = -ENOMEM;
898 goto fail_nomem;
899 }
900
901 /* Platform data holds setup_pinmux function ptr */
902 if (NULL == pdev->dev.platform_data) {
903 status = -ENODEV;
904 goto fail_nomap;
905 }
906 setup_pinmux = pdev->dev.platform_data;
907 /*
908 * setup Mux configuration for ccdc which may be different for
909 * different SoCs using this CCDC
910 */
911 setup_pinmux();
912 ccdc_cfg.dev = &pdev->dev;
913 printk(KERN_NOTICE "%s is registered with vpfe.\n", ccdc_hw_dev.name);
914 return 0;
915 fail_nomap:
916 iounmap(ccdc_cfg.base_addr);
917 fail_nomem:
918 release_mem_region(res->start, resource_size(res));
919 fail_nores:
920 vpfe_unregister_ccdc_device(&ccdc_hw_dev);
921 return status;
922 }
923
dm355_ccdc_remove(struct platform_device * pdev)924 static int dm355_ccdc_remove(struct platform_device *pdev)
925 {
926 struct resource *res;
927
928 iounmap(ccdc_cfg.base_addr);
929 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
930 if (res)
931 release_mem_region(res->start, resource_size(res));
932 vpfe_unregister_ccdc_device(&ccdc_hw_dev);
933 return 0;
934 }
935
936 static struct platform_driver dm355_ccdc_driver = {
937 .driver = {
938 .name = "dm355_ccdc",
939 },
940 .remove = dm355_ccdc_remove,
941 .probe = dm355_ccdc_probe,
942 };
943
944 module_platform_driver(dm355_ccdc_driver);
945
