1 /*
2 * Copyright (C) 2006-2009 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 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
17 *
18 * CCDC hardware module for DM6446
19 * ------------------------------
20 *
21 * This module is for configuring CCD controller of DM6446 VPFE to capture
22 * Raw yuv or Bayer RGB data from a decoder. CCDC has several modules
23 * such as Defect Pixel Correction, Color Space Conversion etc to
24 * pre-process the Raw Bayer RGB data, before writing it to SDRAM. This
25 * module also allows application to configure individual
26 * module parameters through VPFE_CMD_S_CCDC_RAW_PARAMS IOCTL.
27 * To do so, application includes dm644x_ccdc.h and vpfe_capture.h header
28 * files. The setparams() API is called by vpfe_capture driver
29 * to configure module parameters. This file is named DM644x so that other
30 * variants such DM6443 may be supported using the same module.
31 *
32 * TODO: Test Raw bayer parameter settings and bayer capture
33 * Split module parameter structure to module specific ioctl structs
34 * investigate if enum used for user space type definition
35 * to be replaced by #defines or integer
36 */
37 #include <linux/platform_device.h>
38 #include <linux/uaccess.h>
39 #include <linux/videodev2.h>
40 #include <linux/gfp.h>
41 #include <linux/err.h>
42 #include <linux/module.h>
43
44 #include <media/davinci/dm644x_ccdc.h>
45 #include <media/davinci/vpss.h>
46
47 #include "dm644x_ccdc_regs.h"
48 #include "ccdc_hw_device.h"
49
50 MODULE_LICENSE("GPL");
51 MODULE_DESCRIPTION("CCDC Driver for DM6446");
52 MODULE_AUTHOR("Texas Instruments");
53
54 static struct ccdc_oper_config {
55 struct device *dev;
56 /* CCDC interface type */
57 enum vpfe_hw_if_type if_type;
58 /* Raw Bayer configuration */
59 struct ccdc_params_raw bayer;
60 /* YCbCr configuration */
61 struct ccdc_params_ycbcr ycbcr;
62 /* ccdc base address */
63 void __iomem *base_addr;
64 } ccdc_cfg = {
65 /* Raw configurations */
66 .bayer = {
67 .pix_fmt = CCDC_PIXFMT_RAW,
68 .frm_fmt = CCDC_FRMFMT_PROGRESSIVE,
69 .win = CCDC_WIN_VGA,
70 .fid_pol = VPFE_PINPOL_POSITIVE,
71 .vd_pol = VPFE_PINPOL_POSITIVE,
72 .hd_pol = VPFE_PINPOL_POSITIVE,
73 .config_params = {
74 .data_sz = CCDC_DATA_10BITS,
75 },
76 },
77 .ycbcr = {
78 .pix_fmt = CCDC_PIXFMT_YCBCR_8BIT,
79 .frm_fmt = CCDC_FRMFMT_INTERLACED,
80 .win = CCDC_WIN_PAL,
81 .fid_pol = VPFE_PINPOL_POSITIVE,
82 .vd_pol = VPFE_PINPOL_POSITIVE,
83 .hd_pol = VPFE_PINPOL_POSITIVE,
84 .bt656_enable = 1,
85 .pix_order = CCDC_PIXORDER_CBYCRY,
86 .buf_type = CCDC_BUFTYPE_FLD_INTERLEAVED
87 },
88 };
89
90 #define CCDC_MAX_RAW_YUV_FORMATS 2
91
92 /* Raw Bayer formats */
93 static u32 ccdc_raw_bayer_pix_formats[] =
94 {V4L2_PIX_FMT_SBGGR8, V4L2_PIX_FMT_SBGGR16};
95
96 /* Raw YUV formats */
97 static u32 ccdc_raw_yuv_pix_formats[] =
98 {V4L2_PIX_FMT_UYVY, V4L2_PIX_FMT_YUYV};
99
100 /* CCDC Save/Restore context */
101 static u32 ccdc_ctx[CCDC_REG_END / sizeof(u32)];
102
103 /* register access routines */
regr(u32 offset)104 static inline u32 regr(u32 offset)
105 {
106 return __raw_readl(ccdc_cfg.base_addr + offset);
107 }
108
regw(u32 val,u32 offset)109 static inline void regw(u32 val, u32 offset)
110 {
111 __raw_writel(val, ccdc_cfg.base_addr + offset);
112 }
113
ccdc_enable(int flag)114 static void ccdc_enable(int flag)
115 {
116 regw(flag, CCDC_PCR);
117 }
118
ccdc_enable_vport(int flag)119 static void ccdc_enable_vport(int flag)
120 {
121 if (flag)
122 /* enable video port */
123 regw(CCDC_ENABLE_VIDEO_PORT, CCDC_FMTCFG);
124 else
125 regw(CCDC_DISABLE_VIDEO_PORT, CCDC_FMTCFG);
126 }
127
128 /*
129 * ccdc_setwin()
130 * This function will configure the window size
131 * to be capture in CCDC reg
132 */
ccdc_setwin(struct v4l2_rect * image_win,enum ccdc_frmfmt frm_fmt,int ppc)133 void ccdc_setwin(struct v4l2_rect *image_win,
134 enum ccdc_frmfmt frm_fmt,
135 int ppc)
136 {
137 int horz_start, horz_nr_pixels;
138 int vert_start, vert_nr_lines;
139 int val = 0, mid_img = 0;
140
141 dev_dbg(ccdc_cfg.dev, "\nStarting ccdc_setwin...");
142 /*
143 * ppc - per pixel count. indicates how many pixels per cell
144 * output to SDRAM. example, for ycbcr, it is one y and one c, so 2.
145 * raw capture this is 1
146 */
147 horz_start = image_win->left << (ppc - 1);
148 horz_nr_pixels = (image_win->width << (ppc - 1)) - 1;
149 regw((horz_start << CCDC_HORZ_INFO_SPH_SHIFT) | horz_nr_pixels,
150 CCDC_HORZ_INFO);
151
152 vert_start = image_win->top;
153
154 if (frm_fmt == CCDC_FRMFMT_INTERLACED) {
155 vert_nr_lines = (image_win->height >> 1) - 1;
156 vert_start >>= 1;
157 /* Since first line doesn't have any data */
158 vert_start += 1;
159 /* configure VDINT0 */
160 val = (vert_start << CCDC_VDINT_VDINT0_SHIFT);
161 regw(val, CCDC_VDINT);
162
163 } else {
164 /* Since first line doesn't have any data */
165 vert_start += 1;
166 vert_nr_lines = image_win->height - 1;
167 /*
168 * configure VDINT0 and VDINT1. VDINT1 will be at half
169 * of image height
170 */
171 mid_img = vert_start + (image_win->height / 2);
172 val = (vert_start << CCDC_VDINT_VDINT0_SHIFT) |
173 (mid_img & CCDC_VDINT_VDINT1_MASK);
174 regw(val, CCDC_VDINT);
175
176 }
177 regw((vert_start << CCDC_VERT_START_SLV0_SHIFT) | vert_start,
178 CCDC_VERT_START);
179 regw(vert_nr_lines, CCDC_VERT_LINES);
180 dev_dbg(ccdc_cfg.dev, "\nEnd of ccdc_setwin...");
181 }
182
ccdc_readregs(void)183 static void ccdc_readregs(void)
184 {
185 unsigned int val = 0;
186
187 val = regr(CCDC_ALAW);
188 dev_notice(ccdc_cfg.dev, "\nReading 0x%x to ALAW...\n", val);
189 val = regr(CCDC_CLAMP);
190 dev_notice(ccdc_cfg.dev, "\nReading 0x%x to CLAMP...\n", val);
191 val = regr(CCDC_DCSUB);
192 dev_notice(ccdc_cfg.dev, "\nReading 0x%x to DCSUB...\n", val);
193 val = regr(CCDC_BLKCMP);
194 dev_notice(ccdc_cfg.dev, "\nReading 0x%x to BLKCMP...\n", val);
195 val = regr(CCDC_FPC_ADDR);
196 dev_notice(ccdc_cfg.dev, "\nReading 0x%x to FPC_ADDR...\n", val);
197 val = regr(CCDC_FPC);
198 dev_notice(ccdc_cfg.dev, "\nReading 0x%x to FPC...\n", val);
199 val = regr(CCDC_FMTCFG);
200 dev_notice(ccdc_cfg.dev, "\nReading 0x%x to FMTCFG...\n", val);
201 val = regr(CCDC_COLPTN);
202 dev_notice(ccdc_cfg.dev, "\nReading 0x%x to COLPTN...\n", val);
203 val = regr(CCDC_FMT_HORZ);
204 dev_notice(ccdc_cfg.dev, "\nReading 0x%x to FMT_HORZ...\n", val);
205 val = regr(CCDC_FMT_VERT);
206 dev_notice(ccdc_cfg.dev, "\nReading 0x%x to FMT_VERT...\n", val);
207 val = regr(CCDC_HSIZE_OFF);
208 dev_notice(ccdc_cfg.dev, "\nReading 0x%x to HSIZE_OFF...\n", val);
209 val = regr(CCDC_SDOFST);
210 dev_notice(ccdc_cfg.dev, "\nReading 0x%x to SDOFST...\n", val);
211 val = regr(CCDC_VP_OUT);
212 dev_notice(ccdc_cfg.dev, "\nReading 0x%x to VP_OUT...\n", val);
213 val = regr(CCDC_SYN_MODE);
214 dev_notice(ccdc_cfg.dev, "\nReading 0x%x to SYN_MODE...\n", val);
215 val = regr(CCDC_HORZ_INFO);
216 dev_notice(ccdc_cfg.dev, "\nReading 0x%x to HORZ_INFO...\n", val);
217 val = regr(CCDC_VERT_START);
218 dev_notice(ccdc_cfg.dev, "\nReading 0x%x to VERT_START...\n", val);
219 val = regr(CCDC_VERT_LINES);
220 dev_notice(ccdc_cfg.dev, "\nReading 0x%x to VERT_LINES...\n", val);
221 }
222
validate_ccdc_param(struct ccdc_config_params_raw * ccdcparam)223 static int validate_ccdc_param(struct ccdc_config_params_raw *ccdcparam)
224 {
225 if (ccdcparam->alaw.enable) {
226 u8 max_gamma = ccdc_gamma_width_max_bit(ccdcparam->alaw.gamma_wd);
227 u8 max_data = ccdc_data_size_max_bit(ccdcparam->data_sz);
228
229 if ((ccdcparam->alaw.gamma_wd > CCDC_GAMMA_BITS_09_0) ||
230 (ccdcparam->alaw.gamma_wd < CCDC_GAMMA_BITS_15_6) ||
231 (max_gamma > max_data)) {
232 dev_dbg(ccdc_cfg.dev, "\nInvalid data line select");
233 return -1;
234 }
235 }
236 return 0;
237 }
238
ccdc_update_raw_params(struct ccdc_config_params_raw * raw_params)239 static int ccdc_update_raw_params(struct ccdc_config_params_raw *raw_params)
240 {
241 struct ccdc_config_params_raw *config_params =
242 &ccdc_cfg.bayer.config_params;
243 unsigned int *fpc_virtaddr = NULL;
244 unsigned int *fpc_physaddr = NULL;
245
246 memcpy(config_params, raw_params, sizeof(*raw_params));
247 /*
248 * allocate memory for fault pixel table and copy the user
249 * values to the table
250 */
251 if (!config_params->fault_pxl.enable)
252 return 0;
253
254 fpc_physaddr = (unsigned int *)config_params->fault_pxl.fpc_table_addr;
255 fpc_virtaddr = (unsigned int *)phys_to_virt(
256 (unsigned long)fpc_physaddr);
257 /*
258 * Allocate memory for FPC table if current
259 * FPC table buffer is not big enough to
260 * accommodate FPC Number requested
261 */
262 if (raw_params->fault_pxl.fp_num != config_params->fault_pxl.fp_num) {
263 if (fpc_physaddr != NULL) {
264 free_pages((unsigned long)fpc_physaddr,
265 get_order
266 (config_params->fault_pxl.fp_num *
267 FP_NUM_BYTES));
268 }
269
270 /* Allocate memory for FPC table */
271 fpc_virtaddr =
272 (unsigned int *)__get_free_pages(GFP_KERNEL | GFP_DMA,
273 get_order(raw_params->
274 fault_pxl.fp_num *
275 FP_NUM_BYTES));
276
277 if (fpc_virtaddr == NULL) {
278 dev_dbg(ccdc_cfg.dev,
279 "\nUnable to allocate memory for FPC");
280 return -EFAULT;
281 }
282 fpc_physaddr =
283 (unsigned int *)virt_to_phys((void *)fpc_virtaddr);
284 }
285
286 /* Copy number of fault pixels and FPC table */
287 config_params->fault_pxl.fp_num = raw_params->fault_pxl.fp_num;
288 if (copy_from_user(fpc_virtaddr,
289 (void __user *)raw_params->fault_pxl.fpc_table_addr,
290 config_params->fault_pxl.fp_num * FP_NUM_BYTES)) {
291 dev_dbg(ccdc_cfg.dev, "\n copy_from_user failed");
292 return -EFAULT;
293 }
294 config_params->fault_pxl.fpc_table_addr = (unsigned int)fpc_physaddr;
295 return 0;
296 }
297
ccdc_close(struct device * dev)298 static int ccdc_close(struct device *dev)
299 {
300 struct ccdc_config_params_raw *config_params =
301 &ccdc_cfg.bayer.config_params;
302 unsigned int *fpc_physaddr = NULL, *fpc_virtaddr = NULL;
303
304 fpc_physaddr = (unsigned int *)config_params->fault_pxl.fpc_table_addr;
305
306 if (fpc_physaddr != NULL) {
307 fpc_virtaddr = (unsigned int *)
308 phys_to_virt((unsigned long)fpc_physaddr);
309 free_pages((unsigned long)fpc_virtaddr,
310 get_order(config_params->fault_pxl.fp_num *
311 FP_NUM_BYTES));
312 }
313 return 0;
314 }
315
316 /*
317 * ccdc_restore_defaults()
318 * This function will write defaults to all CCDC registers
319 */
ccdc_restore_defaults(void)320 static void ccdc_restore_defaults(void)
321 {
322 int i;
323
324 /* disable CCDC */
325 ccdc_enable(0);
326 /* set all registers to default value */
327 for (i = 4; i <= 0x94; i += 4)
328 regw(0, i);
329 regw(CCDC_NO_CULLING, CCDC_CULLING);
330 regw(CCDC_GAMMA_BITS_11_2, CCDC_ALAW);
331 }
332
ccdc_open(struct device * device)333 static int ccdc_open(struct device *device)
334 {
335 ccdc_restore_defaults();
336 if (ccdc_cfg.if_type == VPFE_RAW_BAYER)
337 ccdc_enable_vport(1);
338 return 0;
339 }
340
ccdc_sbl_reset(void)341 static void ccdc_sbl_reset(void)
342 {
343 vpss_clear_wbl_overflow(VPSS_PCR_CCDC_WBL_O);
344 }
345
346 /* Parameter operations */
ccdc_set_params(void __user * params)347 static int ccdc_set_params(void __user *params)
348 {
349 struct ccdc_config_params_raw ccdc_raw_params;
350 int x;
351
352 if (ccdc_cfg.if_type != VPFE_RAW_BAYER)
353 return -EINVAL;
354
355 x = copy_from_user(&ccdc_raw_params, params, sizeof(ccdc_raw_params));
356 if (x) {
357 dev_dbg(ccdc_cfg.dev, "ccdc_set_params: error in copying"
358 "ccdc params, %d\n", x);
359 return -EFAULT;
360 }
361
362 if (!validate_ccdc_param(&ccdc_raw_params)) {
363 if (!ccdc_update_raw_params(&ccdc_raw_params))
364 return 0;
365 }
366 return -EINVAL;
367 }
368
369 /*
370 * ccdc_config_ycbcr()
371 * This function will configure CCDC for YCbCr video capture
372 */
ccdc_config_ycbcr(void)373 void ccdc_config_ycbcr(void)
374 {
375 struct ccdc_params_ycbcr *params = &ccdc_cfg.ycbcr;
376 u32 syn_mode;
377
378 dev_dbg(ccdc_cfg.dev, "\nStarting ccdc_config_ycbcr...");
379 /*
380 * first restore the CCDC registers to default values
381 * This is important since we assume default values to be set in
382 * a lot of registers that we didn't touch
383 */
384 ccdc_restore_defaults();
385
386 /*
387 * configure pixel format, frame format, configure video frame
388 * format, enable output to SDRAM, enable internal timing generator
389 * and 8bit pack mode
390 */
391 syn_mode = (((params->pix_fmt & CCDC_SYN_MODE_INPMOD_MASK) <<
392 CCDC_SYN_MODE_INPMOD_SHIFT) |
393 ((params->frm_fmt & CCDC_SYN_FLDMODE_MASK) <<
394 CCDC_SYN_FLDMODE_SHIFT) | CCDC_VDHDEN_ENABLE |
395 CCDC_WEN_ENABLE | CCDC_DATA_PACK_ENABLE);
396
397 /* setup BT.656 sync mode */
398 if (params->bt656_enable) {
399 regw(CCDC_REC656IF_BT656_EN, CCDC_REC656IF);
400
401 /*
402 * configure the FID, VD, HD pin polarity,
403 * fld,hd pol positive, vd negative, 8-bit data
404 */
405 syn_mode |= CCDC_SYN_MODE_VD_POL_NEGATIVE;
406 if (ccdc_cfg.if_type == VPFE_BT656_10BIT)
407 syn_mode |= CCDC_SYN_MODE_10BITS;
408 else
409 syn_mode |= CCDC_SYN_MODE_8BITS;
410 } else {
411 /* y/c external sync mode */
412 syn_mode |= (((params->fid_pol & CCDC_FID_POL_MASK) <<
413 CCDC_FID_POL_SHIFT) |
414 ((params->hd_pol & CCDC_HD_POL_MASK) <<
415 CCDC_HD_POL_SHIFT) |
416 ((params->vd_pol & CCDC_VD_POL_MASK) <<
417 CCDC_VD_POL_SHIFT));
418 }
419 regw(syn_mode, CCDC_SYN_MODE);
420
421 /* configure video window */
422 ccdc_setwin(¶ms->win, params->frm_fmt, 2);
423
424 /*
425 * configure the order of y cb cr in SDRAM, and disable latch
426 * internal register on vsync
427 */
428 if (ccdc_cfg.if_type == VPFE_BT656_10BIT)
429 regw((params->pix_order << CCDC_CCDCFG_Y8POS_SHIFT) |
430 CCDC_LATCH_ON_VSYNC_DISABLE | CCDC_CCDCFG_BW656_10BIT,
431 CCDC_CCDCFG);
432 else
433 regw((params->pix_order << CCDC_CCDCFG_Y8POS_SHIFT) |
434 CCDC_LATCH_ON_VSYNC_DISABLE, CCDC_CCDCFG);
435
436 /*
437 * configure the horizontal line offset. This should be a
438 * on 32 byte boundary. So clear LSB 5 bits
439 */
440 regw(((params->win.width * 2 + 31) & ~0x1f), CCDC_HSIZE_OFF);
441
442 /* configure the memory line offset */
443 if (params->buf_type == CCDC_BUFTYPE_FLD_INTERLEAVED)
444 /* two fields are interleaved in memory */
445 regw(CCDC_SDOFST_FIELD_INTERLEAVED, CCDC_SDOFST);
446
447 ccdc_sbl_reset();
448 dev_dbg(ccdc_cfg.dev, "\nEnd of ccdc_config_ycbcr...\n");
449 }
450
ccdc_config_black_clamp(struct ccdc_black_clamp * bclamp)451 static void ccdc_config_black_clamp(struct ccdc_black_clamp *bclamp)
452 {
453 u32 val;
454
455 if (!bclamp->enable) {
456 /* configure DCSub */
457 val = (bclamp->dc_sub) & CCDC_BLK_DC_SUB_MASK;
458 regw(val, CCDC_DCSUB);
459 dev_dbg(ccdc_cfg.dev, "\nWriting 0x%x to DCSUB...\n", val);
460 regw(CCDC_CLAMP_DEFAULT_VAL, CCDC_CLAMP);
461 dev_dbg(ccdc_cfg.dev, "\nWriting 0x0000 to CLAMP...\n");
462 return;
463 }
464 /*
465 * Configure gain, Start pixel, No of line to be avg,
466 * No of pixel/line to be avg, & Enable the Black clamping
467 */
468 val = ((bclamp->sgain & CCDC_BLK_SGAIN_MASK) |
469 ((bclamp->start_pixel & CCDC_BLK_ST_PXL_MASK) <<
470 CCDC_BLK_ST_PXL_SHIFT) |
471 ((bclamp->sample_ln & CCDC_BLK_SAMPLE_LINE_MASK) <<
472 CCDC_BLK_SAMPLE_LINE_SHIFT) |
473 ((bclamp->sample_pixel & CCDC_BLK_SAMPLE_LN_MASK) <<
474 CCDC_BLK_SAMPLE_LN_SHIFT) | CCDC_BLK_CLAMP_ENABLE);
475 regw(val, CCDC_CLAMP);
476 dev_dbg(ccdc_cfg.dev, "\nWriting 0x%x to CLAMP...\n", val);
477 /* If Black clamping is enable then make dcsub 0 */
478 regw(CCDC_DCSUB_DEFAULT_VAL, CCDC_DCSUB);
479 dev_dbg(ccdc_cfg.dev, "\nWriting 0x00000000 to DCSUB...\n");
480 }
481
ccdc_config_black_compense(struct ccdc_black_compensation * bcomp)482 static void ccdc_config_black_compense(struct ccdc_black_compensation *bcomp)
483 {
484 u32 val;
485
486 val = ((bcomp->b & CCDC_BLK_COMP_MASK) |
487 ((bcomp->gb & CCDC_BLK_COMP_MASK) <<
488 CCDC_BLK_COMP_GB_COMP_SHIFT) |
489 ((bcomp->gr & CCDC_BLK_COMP_MASK) <<
490 CCDC_BLK_COMP_GR_COMP_SHIFT) |
491 ((bcomp->r & CCDC_BLK_COMP_MASK) <<
492 CCDC_BLK_COMP_R_COMP_SHIFT));
493 regw(val, CCDC_BLKCMP);
494 }
495
ccdc_config_fpc(struct ccdc_fault_pixel * fpc)496 static void ccdc_config_fpc(struct ccdc_fault_pixel *fpc)
497 {
498 u32 val;
499
500 /* Initially disable FPC */
501 val = CCDC_FPC_DISABLE;
502 regw(val, CCDC_FPC);
503
504 if (!fpc->enable)
505 return;
506
507 /* Configure Fault pixel if needed */
508 regw(fpc->fpc_table_addr, CCDC_FPC_ADDR);
509 dev_dbg(ccdc_cfg.dev, "\nWriting 0x%x to FPC_ADDR...\n",
510 (fpc->fpc_table_addr));
511 /* Write the FPC params with FPC disable */
512 val = fpc->fp_num & CCDC_FPC_FPC_NUM_MASK;
513 regw(val, CCDC_FPC);
514
515 dev_dbg(ccdc_cfg.dev, "\nWriting 0x%x to FPC...\n", val);
516 /* read the FPC register */
517 val = regr(CCDC_FPC) | CCDC_FPC_ENABLE;
518 regw(val, CCDC_FPC);
519 dev_dbg(ccdc_cfg.dev, "\nWriting 0x%x to FPC...\n", val);
520 }
521
522 /*
523 * ccdc_config_raw()
524 * This function will configure CCDC for Raw capture mode
525 */
ccdc_config_raw(void)526 void ccdc_config_raw(void)
527 {
528 struct ccdc_params_raw *params = &ccdc_cfg.bayer;
529 struct ccdc_config_params_raw *config_params =
530 &ccdc_cfg.bayer.config_params;
531 unsigned int syn_mode = 0;
532 unsigned int val;
533
534 dev_dbg(ccdc_cfg.dev, "\nStarting ccdc_config_raw...");
535
536 /* Reset CCDC */
537 ccdc_restore_defaults();
538
539 /* Disable latching function registers on VSYNC */
540 regw(CCDC_LATCH_ON_VSYNC_DISABLE, CCDC_CCDCFG);
541
542 /*
543 * Configure the vertical sync polarity(SYN_MODE.VDPOL),
544 * horizontal sync polarity (SYN_MODE.HDPOL), frame id polarity
545 * (SYN_MODE.FLDPOL), frame format(progressive or interlace),
546 * data size(SYNMODE.DATSIZ), &pixel format (Input mode), output
547 * SDRAM, enable internal timing generator
548 */
549 syn_mode =
550 (((params->vd_pol & CCDC_VD_POL_MASK) << CCDC_VD_POL_SHIFT) |
551 ((params->hd_pol & CCDC_HD_POL_MASK) << CCDC_HD_POL_SHIFT) |
552 ((params->fid_pol & CCDC_FID_POL_MASK) << CCDC_FID_POL_SHIFT) |
553 ((params->frm_fmt & CCDC_FRM_FMT_MASK) << CCDC_FRM_FMT_SHIFT) |
554 ((config_params->data_sz & CCDC_DATA_SZ_MASK) <<
555 CCDC_DATA_SZ_SHIFT) |
556 ((params->pix_fmt & CCDC_PIX_FMT_MASK) << CCDC_PIX_FMT_SHIFT) |
557 CCDC_WEN_ENABLE | CCDC_VDHDEN_ENABLE);
558
559 /* Enable and configure aLaw register if needed */
560 if (config_params->alaw.enable) {
561 val = ((config_params->alaw.gamma_wd &
562 CCDC_ALAW_GAMMA_WD_MASK) | CCDC_ALAW_ENABLE);
563 regw(val, CCDC_ALAW);
564 dev_dbg(ccdc_cfg.dev, "\nWriting 0x%x to ALAW...\n", val);
565 }
566
567 /* Configure video window */
568 ccdc_setwin(¶ms->win, params->frm_fmt, CCDC_PPC_RAW);
569
570 /* Configure Black Clamp */
571 ccdc_config_black_clamp(&config_params->blk_clamp);
572
573 /* Configure Black level compensation */
574 ccdc_config_black_compense(&config_params->blk_comp);
575
576 /* Configure Fault Pixel Correction */
577 ccdc_config_fpc(&config_params->fault_pxl);
578
579 /* If data size is 8 bit then pack the data */
580 if ((config_params->data_sz == CCDC_DATA_8BITS) ||
581 config_params->alaw.enable)
582 syn_mode |= CCDC_DATA_PACK_ENABLE;
583
584 #ifdef CONFIG_DM644X_VIDEO_PORT_ENABLE
585 /* enable video port */
586 val = CCDC_ENABLE_VIDEO_PORT;
587 #else
588 /* disable video port */
589 val = CCDC_DISABLE_VIDEO_PORT;
590 #endif
591
592 if (config_params->data_sz == CCDC_DATA_8BITS)
593 val |= (CCDC_DATA_10BITS & CCDC_FMTCFG_VPIN_MASK)
594 << CCDC_FMTCFG_VPIN_SHIFT;
595 else
596 val |= (config_params->data_sz & CCDC_FMTCFG_VPIN_MASK)
597 << CCDC_FMTCFG_VPIN_SHIFT;
598 /* Write value in FMTCFG */
599 regw(val, CCDC_FMTCFG);
600
601 dev_dbg(ccdc_cfg.dev, "\nWriting 0x%x to FMTCFG...\n", val);
602 /* Configure the color pattern according to mt9t001 sensor */
603 regw(CCDC_COLPTN_VAL, CCDC_COLPTN);
604
605 dev_dbg(ccdc_cfg.dev, "\nWriting 0xBB11BB11 to COLPTN...\n");
606 /*
607 * Configure Data formatter(Video port) pixel selection
608 * (FMT_HORZ, FMT_VERT)
609 */
610 val = ((params->win.left & CCDC_FMT_HORZ_FMTSPH_MASK) <<
611 CCDC_FMT_HORZ_FMTSPH_SHIFT) |
612 (params->win.width & CCDC_FMT_HORZ_FMTLNH_MASK);
613 regw(val, CCDC_FMT_HORZ);
614
615 dev_dbg(ccdc_cfg.dev, "\nWriting 0x%x to FMT_HORZ...\n", val);
616 val = (params->win.top & CCDC_FMT_VERT_FMTSLV_MASK)
617 << CCDC_FMT_VERT_FMTSLV_SHIFT;
618 if (params->frm_fmt == CCDC_FRMFMT_PROGRESSIVE)
619 val |= (params->win.height) & CCDC_FMT_VERT_FMTLNV_MASK;
620 else
621 val |= (params->win.height >> 1) & CCDC_FMT_VERT_FMTLNV_MASK;
622
623 dev_dbg(ccdc_cfg.dev, "\nparams->win.height 0x%x ...\n",
624 params->win.height);
625 regw(val, CCDC_FMT_VERT);
626
627 dev_dbg(ccdc_cfg.dev, "\nWriting 0x%x to FMT_VERT...\n", val);
628
629 dev_dbg(ccdc_cfg.dev, "\nbelow regw(val, FMT_VERT)...");
630
631 /*
632 * Configure Horizontal offset register. If pack 8 is enabled then
633 * 1 pixel will take 1 byte
634 */
635 if ((config_params->data_sz == CCDC_DATA_8BITS) ||
636 config_params->alaw.enable)
637 regw((params->win.width + CCDC_32BYTE_ALIGN_VAL) &
638 CCDC_HSIZE_OFF_MASK, CCDC_HSIZE_OFF);
639 else
640 /* else one pixel will take 2 byte */
641 regw(((params->win.width * CCDC_TWO_BYTES_PER_PIXEL) +
642 CCDC_32BYTE_ALIGN_VAL) & CCDC_HSIZE_OFF_MASK,
643 CCDC_HSIZE_OFF);
644
645 /* Set value for SDOFST */
646 if (params->frm_fmt == CCDC_FRMFMT_INTERLACED) {
647 if (params->image_invert_enable) {
648 /* For intelace inverse mode */
649 regw(CCDC_INTERLACED_IMAGE_INVERT, CCDC_SDOFST);
650 dev_dbg(ccdc_cfg.dev, "\nWriting 0x4B6D to SDOFST..\n");
651 }
652
653 else {
654 /* For intelace non inverse mode */
655 regw(CCDC_INTERLACED_NO_IMAGE_INVERT, CCDC_SDOFST);
656 dev_dbg(ccdc_cfg.dev, "\nWriting 0x0249 to SDOFST..\n");
657 }
658 } else if (params->frm_fmt == CCDC_FRMFMT_PROGRESSIVE) {
659 regw(CCDC_PROGRESSIVE_NO_IMAGE_INVERT, CCDC_SDOFST);
660 dev_dbg(ccdc_cfg.dev, "\nWriting 0x0000 to SDOFST...\n");
661 }
662
663 /*
664 * Configure video port pixel selection (VPOUT)
665 * Here -1 is to make the height value less than FMT_VERT.FMTLNV
666 */
667 if (params->frm_fmt == CCDC_FRMFMT_PROGRESSIVE)
668 val = (((params->win.height - 1) & CCDC_VP_OUT_VERT_NUM_MASK))
669 << CCDC_VP_OUT_VERT_NUM_SHIFT;
670 else
671 val =
672 ((((params->win.height >> CCDC_INTERLACED_HEIGHT_SHIFT) -
673 1) & CCDC_VP_OUT_VERT_NUM_MASK)) <<
674 CCDC_VP_OUT_VERT_NUM_SHIFT;
675
676 val |= ((((params->win.width))) & CCDC_VP_OUT_HORZ_NUM_MASK)
677 << CCDC_VP_OUT_HORZ_NUM_SHIFT;
678 val |= (params->win.left) & CCDC_VP_OUT_HORZ_ST_MASK;
679 regw(val, CCDC_VP_OUT);
680
681 dev_dbg(ccdc_cfg.dev, "\nWriting 0x%x to VP_OUT...\n", val);
682 regw(syn_mode, CCDC_SYN_MODE);
683 dev_dbg(ccdc_cfg.dev, "\nWriting 0x%x to SYN_MODE...\n", syn_mode);
684
685 ccdc_sbl_reset();
686 dev_dbg(ccdc_cfg.dev, "\nend of ccdc_config_raw...");
687 ccdc_readregs();
688 }
689
ccdc_configure(void)690 static int ccdc_configure(void)
691 {
692 if (ccdc_cfg.if_type == VPFE_RAW_BAYER)
693 ccdc_config_raw();
694 else
695 ccdc_config_ycbcr();
696 return 0;
697 }
698
ccdc_set_buftype(enum ccdc_buftype buf_type)699 static int ccdc_set_buftype(enum ccdc_buftype buf_type)
700 {
701 if (ccdc_cfg.if_type == VPFE_RAW_BAYER)
702 ccdc_cfg.bayer.buf_type = buf_type;
703 else
704 ccdc_cfg.ycbcr.buf_type = buf_type;
705 return 0;
706 }
707
ccdc_get_buftype(void)708 static enum ccdc_buftype ccdc_get_buftype(void)
709 {
710 if (ccdc_cfg.if_type == VPFE_RAW_BAYER)
711 return ccdc_cfg.bayer.buf_type;
712 return ccdc_cfg.ycbcr.buf_type;
713 }
714
ccdc_enum_pix(u32 * pix,int i)715 static int ccdc_enum_pix(u32 *pix, int i)
716 {
717 int ret = -EINVAL;
718 if (ccdc_cfg.if_type == VPFE_RAW_BAYER) {
719 if (i < ARRAY_SIZE(ccdc_raw_bayer_pix_formats)) {
720 *pix = ccdc_raw_bayer_pix_formats[i];
721 ret = 0;
722 }
723 } else {
724 if (i < ARRAY_SIZE(ccdc_raw_yuv_pix_formats)) {
725 *pix = ccdc_raw_yuv_pix_formats[i];
726 ret = 0;
727 }
728 }
729 return ret;
730 }
731
ccdc_set_pixel_format(u32 pixfmt)732 static int ccdc_set_pixel_format(u32 pixfmt)
733 {
734 if (ccdc_cfg.if_type == VPFE_RAW_BAYER) {
735 ccdc_cfg.bayer.pix_fmt = CCDC_PIXFMT_RAW;
736 if (pixfmt == V4L2_PIX_FMT_SBGGR8)
737 ccdc_cfg.bayer.config_params.alaw.enable = 1;
738 else if (pixfmt != V4L2_PIX_FMT_SBGGR16)
739 return -EINVAL;
740 } else {
741 if (pixfmt == V4L2_PIX_FMT_YUYV)
742 ccdc_cfg.ycbcr.pix_order = CCDC_PIXORDER_YCBYCR;
743 else if (pixfmt == V4L2_PIX_FMT_UYVY)
744 ccdc_cfg.ycbcr.pix_order = CCDC_PIXORDER_CBYCRY;
745 else
746 return -EINVAL;
747 }
748 return 0;
749 }
750
ccdc_get_pixel_format(void)751 static u32 ccdc_get_pixel_format(void)
752 {
753 struct ccdc_a_law *alaw = &ccdc_cfg.bayer.config_params.alaw;
754 u32 pixfmt;
755
756 if (ccdc_cfg.if_type == VPFE_RAW_BAYER)
757 if (alaw->enable)
758 pixfmt = V4L2_PIX_FMT_SBGGR8;
759 else
760 pixfmt = V4L2_PIX_FMT_SBGGR16;
761 else {
762 if (ccdc_cfg.ycbcr.pix_order == CCDC_PIXORDER_YCBYCR)
763 pixfmt = V4L2_PIX_FMT_YUYV;
764 else
765 pixfmt = V4L2_PIX_FMT_UYVY;
766 }
767 return pixfmt;
768 }
769
ccdc_set_image_window(struct v4l2_rect * win)770 static int ccdc_set_image_window(struct v4l2_rect *win)
771 {
772 if (ccdc_cfg.if_type == VPFE_RAW_BAYER)
773 ccdc_cfg.bayer.win = *win;
774 else
775 ccdc_cfg.ycbcr.win = *win;
776 return 0;
777 }
778
ccdc_get_image_window(struct v4l2_rect * win)779 static void ccdc_get_image_window(struct v4l2_rect *win)
780 {
781 if (ccdc_cfg.if_type == VPFE_RAW_BAYER)
782 *win = ccdc_cfg.bayer.win;
783 else
784 *win = ccdc_cfg.ycbcr.win;
785 }
786
ccdc_get_line_length(void)787 static unsigned int ccdc_get_line_length(void)
788 {
789 struct ccdc_config_params_raw *config_params =
790 &ccdc_cfg.bayer.config_params;
791 unsigned int len;
792
793 if (ccdc_cfg.if_type == VPFE_RAW_BAYER) {
794 if ((config_params->alaw.enable) ||
795 (config_params->data_sz == CCDC_DATA_8BITS))
796 len = ccdc_cfg.bayer.win.width;
797 else
798 len = ccdc_cfg.bayer.win.width * 2;
799 } else
800 len = ccdc_cfg.ycbcr.win.width * 2;
801 return ALIGN(len, 32);
802 }
803
ccdc_set_frame_format(enum ccdc_frmfmt frm_fmt)804 static int ccdc_set_frame_format(enum ccdc_frmfmt frm_fmt)
805 {
806 if (ccdc_cfg.if_type == VPFE_RAW_BAYER)
807 ccdc_cfg.bayer.frm_fmt = frm_fmt;
808 else
809 ccdc_cfg.ycbcr.frm_fmt = frm_fmt;
810 return 0;
811 }
812
ccdc_get_frame_format(void)813 static enum ccdc_frmfmt ccdc_get_frame_format(void)
814 {
815 if (ccdc_cfg.if_type == VPFE_RAW_BAYER)
816 return ccdc_cfg.bayer.frm_fmt;
817 else
818 return ccdc_cfg.ycbcr.frm_fmt;
819 }
820
ccdc_getfid(void)821 static int ccdc_getfid(void)
822 {
823 return (regr(CCDC_SYN_MODE) >> 15) & 1;
824 }
825
826 /* misc operations */
ccdc_setfbaddr(unsigned long addr)827 static inline void ccdc_setfbaddr(unsigned long addr)
828 {
829 regw(addr & 0xffffffe0, CCDC_SDR_ADDR);
830 }
831
ccdc_set_hw_if_params(struct vpfe_hw_if_param * params)832 static int ccdc_set_hw_if_params(struct vpfe_hw_if_param *params)
833 {
834 ccdc_cfg.if_type = params->if_type;
835
836 switch (params->if_type) {
837 case VPFE_BT656:
838 case VPFE_YCBCR_SYNC_16:
839 case VPFE_YCBCR_SYNC_8:
840 case VPFE_BT656_10BIT:
841 ccdc_cfg.ycbcr.vd_pol = params->vdpol;
842 ccdc_cfg.ycbcr.hd_pol = params->hdpol;
843 break;
844 default:
845 /* TODO add support for raw bayer here */
846 return -EINVAL;
847 }
848 return 0;
849 }
850
ccdc_save_context(void)851 static void ccdc_save_context(void)
852 {
853 ccdc_ctx[CCDC_PCR >> 2] = regr(CCDC_PCR);
854 ccdc_ctx[CCDC_SYN_MODE >> 2] = regr(CCDC_SYN_MODE);
855 ccdc_ctx[CCDC_HD_VD_WID >> 2] = regr(CCDC_HD_VD_WID);
856 ccdc_ctx[CCDC_PIX_LINES >> 2] = regr(CCDC_PIX_LINES);
857 ccdc_ctx[CCDC_HORZ_INFO >> 2] = regr(CCDC_HORZ_INFO);
858 ccdc_ctx[CCDC_VERT_START >> 2] = regr(CCDC_VERT_START);
859 ccdc_ctx[CCDC_VERT_LINES >> 2] = regr(CCDC_VERT_LINES);
860 ccdc_ctx[CCDC_CULLING >> 2] = regr(CCDC_CULLING);
861 ccdc_ctx[CCDC_HSIZE_OFF >> 2] = regr(CCDC_HSIZE_OFF);
862 ccdc_ctx[CCDC_SDOFST >> 2] = regr(CCDC_SDOFST);
863 ccdc_ctx[CCDC_SDR_ADDR >> 2] = regr(CCDC_SDR_ADDR);
864 ccdc_ctx[CCDC_CLAMP >> 2] = regr(CCDC_CLAMP);
865 ccdc_ctx[CCDC_DCSUB >> 2] = regr(CCDC_DCSUB);
866 ccdc_ctx[CCDC_COLPTN >> 2] = regr(CCDC_COLPTN);
867 ccdc_ctx[CCDC_BLKCMP >> 2] = regr(CCDC_BLKCMP);
868 ccdc_ctx[CCDC_FPC >> 2] = regr(CCDC_FPC);
869 ccdc_ctx[CCDC_FPC_ADDR >> 2] = regr(CCDC_FPC_ADDR);
870 ccdc_ctx[CCDC_VDINT >> 2] = regr(CCDC_VDINT);
871 ccdc_ctx[CCDC_ALAW >> 2] = regr(CCDC_ALAW);
872 ccdc_ctx[CCDC_REC656IF >> 2] = regr(CCDC_REC656IF);
873 ccdc_ctx[CCDC_CCDCFG >> 2] = regr(CCDC_CCDCFG);
874 ccdc_ctx[CCDC_FMTCFG >> 2] = regr(CCDC_FMTCFG);
875 ccdc_ctx[CCDC_FMT_HORZ >> 2] = regr(CCDC_FMT_HORZ);
876 ccdc_ctx[CCDC_FMT_VERT >> 2] = regr(CCDC_FMT_VERT);
877 ccdc_ctx[CCDC_FMT_ADDR0 >> 2] = regr(CCDC_FMT_ADDR0);
878 ccdc_ctx[CCDC_FMT_ADDR1 >> 2] = regr(CCDC_FMT_ADDR1);
879 ccdc_ctx[CCDC_FMT_ADDR2 >> 2] = regr(CCDC_FMT_ADDR2);
880 ccdc_ctx[CCDC_FMT_ADDR3 >> 2] = regr(CCDC_FMT_ADDR3);
881 ccdc_ctx[CCDC_FMT_ADDR4 >> 2] = regr(CCDC_FMT_ADDR4);
882 ccdc_ctx[CCDC_FMT_ADDR5 >> 2] = regr(CCDC_FMT_ADDR5);
883 ccdc_ctx[CCDC_FMT_ADDR6 >> 2] = regr(CCDC_FMT_ADDR6);
884 ccdc_ctx[CCDC_FMT_ADDR7 >> 2] = regr(CCDC_FMT_ADDR7);
885 ccdc_ctx[CCDC_PRGEVEN_0 >> 2] = regr(CCDC_PRGEVEN_0);
886 ccdc_ctx[CCDC_PRGEVEN_1 >> 2] = regr(CCDC_PRGEVEN_1);
887 ccdc_ctx[CCDC_PRGODD_0 >> 2] = regr(CCDC_PRGODD_0);
888 ccdc_ctx[CCDC_PRGODD_1 >> 2] = regr(CCDC_PRGODD_1);
889 ccdc_ctx[CCDC_VP_OUT >> 2] = regr(CCDC_VP_OUT);
890 }
891
ccdc_restore_context(void)892 static void ccdc_restore_context(void)
893 {
894 regw(ccdc_ctx[CCDC_SYN_MODE >> 2], CCDC_SYN_MODE);
895 regw(ccdc_ctx[CCDC_HD_VD_WID >> 2], CCDC_HD_VD_WID);
896 regw(ccdc_ctx[CCDC_PIX_LINES >> 2], CCDC_PIX_LINES);
897 regw(ccdc_ctx[CCDC_HORZ_INFO >> 2], CCDC_HORZ_INFO);
898 regw(ccdc_ctx[CCDC_VERT_START >> 2], CCDC_VERT_START);
899 regw(ccdc_ctx[CCDC_VERT_LINES >> 2], CCDC_VERT_LINES);
900 regw(ccdc_ctx[CCDC_CULLING >> 2], CCDC_CULLING);
901 regw(ccdc_ctx[CCDC_HSIZE_OFF >> 2], CCDC_HSIZE_OFF);
902 regw(ccdc_ctx[CCDC_SDOFST >> 2], CCDC_SDOFST);
903 regw(ccdc_ctx[CCDC_SDR_ADDR >> 2], CCDC_SDR_ADDR);
904 regw(ccdc_ctx[CCDC_CLAMP >> 2], CCDC_CLAMP);
905 regw(ccdc_ctx[CCDC_DCSUB >> 2], CCDC_DCSUB);
906 regw(ccdc_ctx[CCDC_COLPTN >> 2], CCDC_COLPTN);
907 regw(ccdc_ctx[CCDC_BLKCMP >> 2], CCDC_BLKCMP);
908 regw(ccdc_ctx[CCDC_FPC >> 2], CCDC_FPC);
909 regw(ccdc_ctx[CCDC_FPC_ADDR >> 2], CCDC_FPC_ADDR);
910 regw(ccdc_ctx[CCDC_VDINT >> 2], CCDC_VDINT);
911 regw(ccdc_ctx[CCDC_ALAW >> 2], CCDC_ALAW);
912 regw(ccdc_ctx[CCDC_REC656IF >> 2], CCDC_REC656IF);
913 regw(ccdc_ctx[CCDC_CCDCFG >> 2], CCDC_CCDCFG);
914 regw(ccdc_ctx[CCDC_FMTCFG >> 2], CCDC_FMTCFG);
915 regw(ccdc_ctx[CCDC_FMT_HORZ >> 2], CCDC_FMT_HORZ);
916 regw(ccdc_ctx[CCDC_FMT_VERT >> 2], CCDC_FMT_VERT);
917 regw(ccdc_ctx[CCDC_FMT_ADDR0 >> 2], CCDC_FMT_ADDR0);
918 regw(ccdc_ctx[CCDC_FMT_ADDR1 >> 2], CCDC_FMT_ADDR1);
919 regw(ccdc_ctx[CCDC_FMT_ADDR2 >> 2], CCDC_FMT_ADDR2);
920 regw(ccdc_ctx[CCDC_FMT_ADDR3 >> 2], CCDC_FMT_ADDR3);
921 regw(ccdc_ctx[CCDC_FMT_ADDR4 >> 2], CCDC_FMT_ADDR4);
922 regw(ccdc_ctx[CCDC_FMT_ADDR5 >> 2], CCDC_FMT_ADDR5);
923 regw(ccdc_ctx[CCDC_FMT_ADDR6 >> 2], CCDC_FMT_ADDR6);
924 regw(ccdc_ctx[CCDC_FMT_ADDR7 >> 2], CCDC_FMT_ADDR7);
925 regw(ccdc_ctx[CCDC_PRGEVEN_0 >> 2], CCDC_PRGEVEN_0);
926 regw(ccdc_ctx[CCDC_PRGEVEN_1 >> 2], CCDC_PRGEVEN_1);
927 regw(ccdc_ctx[CCDC_PRGODD_0 >> 2], CCDC_PRGODD_0);
928 regw(ccdc_ctx[CCDC_PRGODD_1 >> 2], CCDC_PRGODD_1);
929 regw(ccdc_ctx[CCDC_VP_OUT >> 2], CCDC_VP_OUT);
930 regw(ccdc_ctx[CCDC_PCR >> 2], CCDC_PCR);
931 }
932 static struct ccdc_hw_device ccdc_hw_dev = {
933 .name = "DM6446 CCDC",
934 .owner = THIS_MODULE,
935 .hw_ops = {
936 .open = ccdc_open,
937 .close = ccdc_close,
938 .reset = ccdc_sbl_reset,
939 .enable = ccdc_enable,
940 .set_hw_if_params = ccdc_set_hw_if_params,
941 .set_params = ccdc_set_params,
942 .configure = ccdc_configure,
943 .set_buftype = ccdc_set_buftype,
944 .get_buftype = ccdc_get_buftype,
945 .enum_pix = ccdc_enum_pix,
946 .set_pixel_format = ccdc_set_pixel_format,
947 .get_pixel_format = ccdc_get_pixel_format,
948 .set_frame_format = ccdc_set_frame_format,
949 .get_frame_format = ccdc_get_frame_format,
950 .set_image_window = ccdc_set_image_window,
951 .get_image_window = ccdc_get_image_window,
952 .get_line_length = ccdc_get_line_length,
953 .setfbaddr = ccdc_setfbaddr,
954 .getfid = ccdc_getfid,
955 },
956 };
957
dm644x_ccdc_probe(struct platform_device * pdev)958 static int dm644x_ccdc_probe(struct platform_device *pdev)
959 {
960 struct resource *res;
961 int status = 0;
962
963 /*
964 * first try to register with vpfe. If not correct platform, then we
965 * don't have to iomap
966 */
967 status = vpfe_register_ccdc_device(&ccdc_hw_dev);
968 if (status < 0)
969 return status;
970
971 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
972 if (!res) {
973 status = -ENODEV;
974 goto fail_nores;
975 }
976
977 res = request_mem_region(res->start, resource_size(res), res->name);
978 if (!res) {
979 status = -EBUSY;
980 goto fail_nores;
981 }
982
983 ccdc_cfg.base_addr = ioremap_nocache(res->start, resource_size(res));
984 if (!ccdc_cfg.base_addr) {
985 status = -ENOMEM;
986 goto fail_nomem;
987 }
988
989 ccdc_cfg.dev = &pdev->dev;
990 printk(KERN_NOTICE "%s is registered with vpfe.\n", ccdc_hw_dev.name);
991 return 0;
992 fail_nomem:
993 release_mem_region(res->start, resource_size(res));
994 fail_nores:
995 vpfe_unregister_ccdc_device(&ccdc_hw_dev);
996 return status;
997 }
998
dm644x_ccdc_remove(struct platform_device * pdev)999 static int dm644x_ccdc_remove(struct platform_device *pdev)
1000 {
1001 struct resource *res;
1002
1003 iounmap(ccdc_cfg.base_addr);
1004 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
1005 if (res)
1006 release_mem_region(res->start, resource_size(res));
1007 vpfe_unregister_ccdc_device(&ccdc_hw_dev);
1008 return 0;
1009 }
1010
dm644x_ccdc_suspend(struct device * dev)1011 static int dm644x_ccdc_suspend(struct device *dev)
1012 {
1013 /* Save CCDC context */
1014 ccdc_save_context();
1015 /* Disable CCDC */
1016 ccdc_enable(0);
1017
1018 return 0;
1019 }
1020
dm644x_ccdc_resume(struct device * dev)1021 static int dm644x_ccdc_resume(struct device *dev)
1022 {
1023 /* Restore CCDC context */
1024 ccdc_restore_context();
1025
1026 return 0;
1027 }
1028
1029 static const struct dev_pm_ops dm644x_ccdc_pm_ops = {
1030 .suspend = dm644x_ccdc_suspend,
1031 .resume = dm644x_ccdc_resume,
1032 };
1033
1034 static struct platform_driver dm644x_ccdc_driver = {
1035 .driver = {
1036 .name = "dm644x_ccdc",
1037 .owner = THIS_MODULE,
1038 .pm = &dm644x_ccdc_pm_ops,
1039 },
1040 .remove = dm644x_ccdc_remove,
1041 .probe = dm644x_ccdc_probe,
1042 };
1043
1044 module_platform_driver(dm644x_ccdc_driver);
1045