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Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
[linux-btrfs-devel.git] / drivers / media / video / davinci / dm644x_ccdc.c
blobc8b32c1c7386168a60aa5e6f82cb51ebf294385d
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/clk.h>
42 #include <linux/err.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 /* Master clock */
63 struct clk *mclk;
64 /* slave clock */
65 struct clk *sclk;
66 /* ccdc base address */
67 void __iomem *base_addr;
68 } ccdc_cfg = {
69 /* Raw configurations */
70 .bayer = {
71 .pix_fmt = CCDC_PIXFMT_RAW,
72 .frm_fmt = CCDC_FRMFMT_PROGRESSIVE,
73 .win = CCDC_WIN_VGA,
74 .fid_pol = VPFE_PINPOL_POSITIVE,
75 .vd_pol = VPFE_PINPOL_POSITIVE,
76 .hd_pol = VPFE_PINPOL_POSITIVE,
77 .config_params = {
78 .data_sz = CCDC_DATA_10BITS,
79 },
80 },
81 .ycbcr = {
82 .pix_fmt = CCDC_PIXFMT_YCBCR_8BIT,
83 .frm_fmt = CCDC_FRMFMT_INTERLACED,
84 .win = CCDC_WIN_PAL,
85 .fid_pol = VPFE_PINPOL_POSITIVE,
86 .vd_pol = VPFE_PINPOL_POSITIVE,
87 .hd_pol = VPFE_PINPOL_POSITIVE,
88 .bt656_enable = 1,
89 .pix_order = CCDC_PIXORDER_CBYCRY,
90 .buf_type = CCDC_BUFTYPE_FLD_INTERLEAVED
91 },
92 };
93
94 #define CCDC_MAX_RAW_YUV_FORMATS 2
95
96 /* Raw Bayer formats */
97 static u32 ccdc_raw_bayer_pix_formats[] =
98 {V4L2_PIX_FMT_SBGGR8, V4L2_PIX_FMT_SBGGR16};
99
100 /* Raw YUV formats */
101 static u32 ccdc_raw_yuv_pix_formats[] =
102 {V4L2_PIX_FMT_UYVY, V4L2_PIX_FMT_YUYV};
103
104 /* CCDC Save/Restore context */
105 static u32 ccdc_ctx[CCDC_REG_END / sizeof(u32)];
106
107 /* register access routines */
108 static inline u32 regr(u32 offset)
109 {
110 return __raw_readl(ccdc_cfg.base_addr + offset);
111 }
112
113 static inline void regw(u32 val, u32 offset)
114 {
115 __raw_writel(val, ccdc_cfg.base_addr + offset);
116 }
117
118 static void ccdc_enable(int flag)
119 {
120 regw(flag, CCDC_PCR);
121 }
122
123 static void ccdc_enable_vport(int flag)
124 {
125 if (flag)
126 /* enable video port */
127 regw(CCDC_ENABLE_VIDEO_PORT, CCDC_FMTCFG);
128 else
129 regw(CCDC_DISABLE_VIDEO_PORT, CCDC_FMTCFG);
130 }
131
132 /*
133 * ccdc_setwin()
134 * This function will configure the window size
135 * to be capture in CCDC reg
136 */
137 void ccdc_setwin(struct v4l2_rect *image_win,
138 enum ccdc_frmfmt frm_fmt,
139 int ppc)
140 {
141 int horz_start, horz_nr_pixels;
142 int vert_start, vert_nr_lines;
143 int val = 0, mid_img = 0;
144
145 dev_dbg(ccdc_cfg.dev, "\nStarting ccdc_setwin...");
146 /*
147 * ppc - per pixel count. indicates how many pixels per cell
148 * output to SDRAM. example, for ycbcr, it is one y and one c, so 2.
149 * raw capture this is 1
150 */
151 horz_start = image_win->left << (ppc - 1);
152 horz_nr_pixels = (image_win->width << (ppc - 1)) - 1;
153 regw((horz_start << CCDC_HORZ_INFO_SPH_SHIFT) | horz_nr_pixels,
154 CCDC_HORZ_INFO);
155
156 vert_start = image_win->top;
157
158 if (frm_fmt == CCDC_FRMFMT_INTERLACED) {
159 vert_nr_lines = (image_win->height >> 1) - 1;
160 vert_start >>= 1;
161 /* Since first line doesn't have any data */
162 vert_start += 1;
163 /* configure VDINT0 */
164 val = (vert_start << CCDC_VDINT_VDINT0_SHIFT);
165 regw(val, CCDC_VDINT);
166
167 } else {
168 /* Since first line doesn't have any data */
169 vert_start += 1;
170 vert_nr_lines = image_win->height - 1;
171 /*
172 * configure VDINT0 and VDINT1. VDINT1 will be at half
173 * of image height
174 */
175 mid_img = vert_start + (image_win->height / 2);
176 val = (vert_start << CCDC_VDINT_VDINT0_SHIFT) |
177 (mid_img & CCDC_VDINT_VDINT1_MASK);
178 regw(val, CCDC_VDINT);
179
180 }
181 regw((vert_start << CCDC_VERT_START_SLV0_SHIFT) | vert_start,
182 CCDC_VERT_START);
183 regw(vert_nr_lines, CCDC_VERT_LINES);
184 dev_dbg(ccdc_cfg.dev, "\nEnd of ccdc_setwin...");
185 }
186
187 static void ccdc_readregs(void)
188 {
189 unsigned int val = 0;
190
191 val = regr(CCDC_ALAW);
192 dev_notice(ccdc_cfg.dev, "\nReading 0x%x to ALAW...\n", val);
193 val = regr(CCDC_CLAMP);
194 dev_notice(ccdc_cfg.dev, "\nReading 0x%x to CLAMP...\n", val);
195 val = regr(CCDC_DCSUB);
196 dev_notice(ccdc_cfg.dev, "\nReading 0x%x to DCSUB...\n", val);
197 val = regr(CCDC_BLKCMP);
198 dev_notice(ccdc_cfg.dev, "\nReading 0x%x to BLKCMP...\n", val);
199 val = regr(CCDC_FPC_ADDR);
200 dev_notice(ccdc_cfg.dev, "\nReading 0x%x to FPC_ADDR...\n", val);
201 val = regr(CCDC_FPC);
202 dev_notice(ccdc_cfg.dev, "\nReading 0x%x to FPC...\n", val);
203 val = regr(CCDC_FMTCFG);
204 dev_notice(ccdc_cfg.dev, "\nReading 0x%x to FMTCFG...\n", val);
205 val = regr(CCDC_COLPTN);
206 dev_notice(ccdc_cfg.dev, "\nReading 0x%x to COLPTN...\n", val);
207 val = regr(CCDC_FMT_HORZ);
208 dev_notice(ccdc_cfg.dev, "\nReading 0x%x to FMT_HORZ...\n", val);
209 val = regr(CCDC_FMT_VERT);
210 dev_notice(ccdc_cfg.dev, "\nReading 0x%x to FMT_VERT...\n", val);
211 val = regr(CCDC_HSIZE_OFF);
212 dev_notice(ccdc_cfg.dev, "\nReading 0x%x to HSIZE_OFF...\n", val);
213 val = regr(CCDC_SDOFST);
214 dev_notice(ccdc_cfg.dev, "\nReading 0x%x to SDOFST...\n", val);
215 val = regr(CCDC_VP_OUT);
216 dev_notice(ccdc_cfg.dev, "\nReading 0x%x to VP_OUT...\n", val);
217 val = regr(CCDC_SYN_MODE);
218 dev_notice(ccdc_cfg.dev, "\nReading 0x%x to SYN_MODE...\n", val);
219 val = regr(CCDC_HORZ_INFO);
220 dev_notice(ccdc_cfg.dev, "\nReading 0x%x to HORZ_INFO...\n", val);
221 val = regr(CCDC_VERT_START);
222 dev_notice(ccdc_cfg.dev, "\nReading 0x%x to VERT_START...\n", val);
223 val = regr(CCDC_VERT_LINES);
224 dev_notice(ccdc_cfg.dev, "\nReading 0x%x to VERT_LINES...\n", val);
225 }
226
227 static int validate_ccdc_param(struct ccdc_config_params_raw *ccdcparam)
228 {
229 if (ccdcparam->alaw.enable) {
230 if ((ccdcparam->alaw.gama_wd > CCDC_GAMMA_BITS_09_0) ||
231 (ccdcparam->alaw.gama_wd < CCDC_GAMMA_BITS_15_6) ||
232 (ccdcparam->alaw.gama_wd < ccdcparam->data_sz)) {
233 dev_dbg(ccdc_cfg.dev, "\nInvalid data line select");
234 return -1;
235 }
236 }
237 return 0;
238 }
239
240 static int ccdc_update_raw_params(struct ccdc_config_params_raw *raw_params)
241 {
242 struct ccdc_config_params_raw *config_params =
243 &ccdc_cfg.bayer.config_params;
244 unsigned int *fpc_virtaddr = NULL;
245 unsigned int *fpc_physaddr = NULL;
246
247 memcpy(config_params, raw_params, sizeof(*raw_params));
248 /*
249 * allocate memory for fault pixel table and copy the user
250 * values to the table
251 */
252 if (!config_params->fault_pxl.enable)
253 return 0;
254
255 fpc_physaddr = (unsigned int *)config_params->fault_pxl.fpc_table_addr;
256 fpc_virtaddr = (unsigned int *)phys_to_virt(
257 (unsigned long)fpc_physaddr);
258 /*
259 * Allocate memory for FPC table if current
260 * FPC table buffer is not big enough to
261 * accommodate FPC Number requested
262 */
263 if (raw_params->fault_pxl.fp_num != config_params->fault_pxl.fp_num) {
264 if (fpc_physaddr != NULL) {
265 free_pages((unsigned long)fpc_physaddr,
266 get_order
267 (config_params->fault_pxl.fp_num *
268 FP_NUM_BYTES));
269 }
270
271 /* Allocate memory for FPC table */
272 fpc_virtaddr =
273 (unsigned int *)__get_free_pages(GFP_KERNEL | GFP_DMA,
274 get_order(raw_params->
275 fault_pxl.fp_num *
276 FP_NUM_BYTES));
277
278 if (fpc_virtaddr == NULL) {
279 dev_dbg(ccdc_cfg.dev,
280 "\nUnable to allocate memory for FPC");
281 return -EFAULT;
282 }
283 fpc_physaddr =
284 (unsigned int *)virt_to_phys((void *)fpc_virtaddr);
285 }
286
287 /* Copy number of fault pixels and FPC table */
288 config_params->fault_pxl.fp_num = raw_params->fault_pxl.fp_num;
289 if (copy_from_user(fpc_virtaddr,
290 (void __user *)raw_params->fault_pxl.fpc_table_addr,
291 config_params->fault_pxl.fp_num * FP_NUM_BYTES)) {
292 dev_dbg(ccdc_cfg.dev, "\n copy_from_user failed");
293 return -EFAULT;
294 }
295 config_params->fault_pxl.fpc_table_addr = (unsigned int)fpc_physaddr;
296 return 0;
297 }
298
299 static int ccdc_close(struct device *dev)
300 {
301 struct ccdc_config_params_raw *config_params =
302 &ccdc_cfg.bayer.config_params;
303 unsigned int *fpc_physaddr = NULL, *fpc_virtaddr = NULL;
304
305 fpc_physaddr = (unsigned int *)config_params->fault_pxl.fpc_table_addr;
306
307 if (fpc_physaddr != NULL) {
308 fpc_virtaddr = (unsigned int *)
309 phys_to_virt((unsigned long)fpc_physaddr);
310 free_pages((unsigned long)fpc_virtaddr,
311 get_order(config_params->fault_pxl.fp_num *
312 FP_NUM_BYTES));
313 }
314 return 0;
315 }
316
317 /*
318 * ccdc_restore_defaults()
319 * This function will write defaults to all CCDC registers
320 */
321 static void ccdc_restore_defaults(void)
322 {
323 int i;
324
325 /* disable CCDC */
326 ccdc_enable(0);
327 /* set all registers to default value */
328 for (i = 4; i <= 0x94; i += 4)
329 regw(0, i);
330 regw(CCDC_NO_CULLING, CCDC_CULLING);
331 regw(CCDC_GAMMA_BITS_11_2, CCDC_ALAW);
332 }
333
334 static int ccdc_open(struct device *device)
335 {
336 ccdc_restore_defaults();
337 if (ccdc_cfg.if_type == VPFE_RAW_BAYER)
338 ccdc_enable_vport(1);
339 return 0;
340 }
341
342 static void ccdc_sbl_reset(void)
343 {
344 vpss_clear_wbl_overflow(VPSS_PCR_CCDC_WBL_O);
345 }
346
347 /* Parameter operations */
348 static int ccdc_set_params(void __user *params)
349 {
350 struct ccdc_config_params_raw ccdc_raw_params;
351 int x;
352
353 if (ccdc_cfg.if_type != VPFE_RAW_BAYER)
354 return -EINVAL;
355
356 x = copy_from_user(&ccdc_raw_params, params, sizeof(ccdc_raw_params));
357 if (x) {
358 dev_dbg(ccdc_cfg.dev, "ccdc_set_params: error in copying"
359 "ccdc params, %d\n", x);
360 return -EFAULT;
361 }
362
363 if (!validate_ccdc_param(&ccdc_raw_params)) {
364 if (!ccdc_update_raw_params(&ccdc_raw_params))
365 return 0;
366 }
367 return -EINVAL;
368 }
369
370 /*
371 * ccdc_config_ycbcr()
372 * This function will configure CCDC for YCbCr video capture
373 */
374 void ccdc_config_ycbcr(void)
375 {
376 struct ccdc_params_ycbcr *params = &ccdc_cfg.ycbcr;
377 u32 syn_mode;
378
379 dev_dbg(ccdc_cfg.dev, "\nStarting ccdc_config_ycbcr...");
380 /*
381 * first restore the CCDC registers to default values
382 * This is important since we assume default values to be set in
383 * a lot of registers that we didn't touch
384 */
385 ccdc_restore_defaults();
386
387 /*
388 * configure pixel format, frame format, configure video frame
389 * format, enable output to SDRAM, enable internal timing generator
390 * and 8bit pack mode
391 */
392 syn_mode = (((params->pix_fmt & CCDC_SYN_MODE_INPMOD_MASK) <<
393 CCDC_SYN_MODE_INPMOD_SHIFT) |
394 ((params->frm_fmt & CCDC_SYN_FLDMODE_MASK) <<
395 CCDC_SYN_FLDMODE_SHIFT) | CCDC_VDHDEN_ENABLE |
396 CCDC_WEN_ENABLE | CCDC_DATA_PACK_ENABLE);
397
398 /* setup BT.656 sync mode */
399 if (params->bt656_enable) {
400 regw(CCDC_REC656IF_BT656_EN, CCDC_REC656IF);
401
402 /*
403 * configure the FID, VD, HD pin polarity,
404 * fld,hd pol positive, vd negative, 8-bit data
405 */
406 syn_mode |= CCDC_SYN_MODE_VD_POL_NEGATIVE;
407 if (ccdc_cfg.if_type == VPFE_BT656_10BIT)
408 syn_mode |= CCDC_SYN_MODE_10BITS;
409 else
410 syn_mode |= CCDC_SYN_MODE_8BITS;
411 } else {
412 /* y/c external sync mode */
413 syn_mode |= (((params->fid_pol & CCDC_FID_POL_MASK) <<
414 CCDC_FID_POL_SHIFT) |
415 ((params->hd_pol & CCDC_HD_POL_MASK) <<
416 CCDC_HD_POL_SHIFT) |
417 ((params->vd_pol & CCDC_VD_POL_MASK) <<
418 CCDC_VD_POL_SHIFT));
419 }
420 regw(syn_mode, CCDC_SYN_MODE);
421
422 /* configure video window */
423 ccdc_setwin(&params->win, params->frm_fmt, 2);
424
425 /*
426 * configure the order of y cb cr in SDRAM, and disable latch
427 * internal register on vsync
428 */
429 if (ccdc_cfg.if_type == VPFE_BT656_10BIT)
430 regw((params->pix_order << CCDC_CCDCFG_Y8POS_SHIFT) |
431 CCDC_LATCH_ON_VSYNC_DISABLE | CCDC_CCDCFG_BW656_10BIT,
432 CCDC_CCDCFG);
433 else
434 regw((params->pix_order << CCDC_CCDCFG_Y8POS_SHIFT) |
435 CCDC_LATCH_ON_VSYNC_DISABLE, CCDC_CCDCFG);
436
437 /*
438 * configure the horizontal line offset. This should be a
439 * on 32 byte boundary. So clear LSB 5 bits
440 */
441 regw(((params->win.width * 2 + 31) & ~0x1f), CCDC_HSIZE_OFF);
442
443 /* configure the memory line offset */
444 if (params->buf_type == CCDC_BUFTYPE_FLD_INTERLEAVED)
445 /* two fields are interleaved in memory */
446 regw(CCDC_SDOFST_FIELD_INTERLEAVED, CCDC_SDOFST);
447
448 ccdc_sbl_reset();
449 dev_dbg(ccdc_cfg.dev, "\nEnd of ccdc_config_ycbcr...\n");
450 }
451
452 static void ccdc_config_black_clamp(struct ccdc_black_clamp *bclamp)
453 {
454 u32 val;
455
456 if (!bclamp->enable) {
457 /* configure DCSub */
458 val = (bclamp->dc_sub) & CCDC_BLK_DC_SUB_MASK;
459 regw(val, CCDC_DCSUB);
460 dev_dbg(ccdc_cfg.dev, "\nWriting 0x%x to DCSUB...\n", val);
461 regw(CCDC_CLAMP_DEFAULT_VAL, CCDC_CLAMP);
462 dev_dbg(ccdc_cfg.dev, "\nWriting 0x0000 to CLAMP...\n");
463 return;
464 }
465 /*
466 * Configure gain, Start pixel, No of line to be avg,
467 * No of pixel/line to be avg, & Enable the Black clamping
468 */
469 val = ((bclamp->sgain & CCDC_BLK_SGAIN_MASK) |
470 ((bclamp->start_pixel & CCDC_BLK_ST_PXL_MASK) <<
471 CCDC_BLK_ST_PXL_SHIFT) |
472 ((bclamp->sample_ln & CCDC_BLK_SAMPLE_LINE_MASK) <<
473 CCDC_BLK_SAMPLE_LINE_SHIFT) |
474 ((bclamp->sample_pixel & CCDC_BLK_SAMPLE_LN_MASK) <<
475 CCDC_BLK_SAMPLE_LN_SHIFT) | CCDC_BLK_CLAMP_ENABLE);
476 regw(val, CCDC_CLAMP);
477 dev_dbg(ccdc_cfg.dev, "\nWriting 0x%x to CLAMP...\n", val);
478 /* If Black clamping is enable then make dcsub 0 */
479 regw(CCDC_DCSUB_DEFAULT_VAL, CCDC_DCSUB);
480 dev_dbg(ccdc_cfg.dev, "\nWriting 0x00000000 to DCSUB...\n");
481 }
482
483 static void ccdc_config_black_compense(struct ccdc_black_compensation *bcomp)
484 {
485 u32 val;
486
487 val = ((bcomp->b & CCDC_BLK_COMP_MASK) |
488 ((bcomp->gb & CCDC_BLK_COMP_MASK) <<
489 CCDC_BLK_COMP_GB_COMP_SHIFT) |
490 ((bcomp->gr & CCDC_BLK_COMP_MASK) <<
491 CCDC_BLK_COMP_GR_COMP_SHIFT) |
492 ((bcomp->r & CCDC_BLK_COMP_MASK) <<
493 CCDC_BLK_COMP_R_COMP_SHIFT));
494 regw(val, CCDC_BLKCMP);
495 }
496
497 static void ccdc_config_fpc(struct ccdc_fault_pixel *fpc)
498 {
499 u32 val;
500
501 /* Initially disable FPC */
502 val = CCDC_FPC_DISABLE;
503 regw(val, CCDC_FPC);
504
505 if (!fpc->enable)
506 return;
507
508 /* Configure Fault pixel if needed */
509 regw(fpc->fpc_table_addr, CCDC_FPC_ADDR);
510 dev_dbg(ccdc_cfg.dev, "\nWriting 0x%x to FPC_ADDR...\n",
511 (fpc->fpc_table_addr));
512 /* Write the FPC params with FPC disable */
513 val = fpc->fp_num & CCDC_FPC_FPC_NUM_MASK;
514 regw(val, CCDC_FPC);
515
516 dev_dbg(ccdc_cfg.dev, "\nWriting 0x%x to FPC...\n", val);
517 /* read the FPC register */
518 val = regr(CCDC_FPC) | CCDC_FPC_ENABLE;
519 regw(val, CCDC_FPC);
520 dev_dbg(ccdc_cfg.dev, "\nWriting 0x%x to FPC...\n", val);
521 }
522
523 /*
524 * ccdc_config_raw()
525 * This function will configure CCDC for Raw capture mode
526 */
527 void ccdc_config_raw(void)
528 {
529 struct ccdc_params_raw *params = &ccdc_cfg.bayer;
530 struct ccdc_config_params_raw *config_params =
531 &ccdc_cfg.bayer.config_params;
532 unsigned int syn_mode = 0;
533 unsigned int val;
534
535 dev_dbg(ccdc_cfg.dev, "\nStarting ccdc_config_raw...");
536
537 /* Reset CCDC */
538 ccdc_restore_defaults();
539
540 /* Disable latching function registers on VSYNC */
541 regw(CCDC_LATCH_ON_VSYNC_DISABLE, CCDC_CCDCFG);
542
543 /*
544 * Configure the vertical sync polarity(SYN_MODE.VDPOL),
545 * horizontal sync polarity (SYN_MODE.HDPOL), frame id polarity
546 * (SYN_MODE.FLDPOL), frame format(progressive or interlace),
547 * data size(SYNMODE.DATSIZ), &pixel format (Input mode), output
548 * SDRAM, enable internal timing generator
549 */
550 syn_mode =
551 (((params->vd_pol & CCDC_VD_POL_MASK) << CCDC_VD_POL_SHIFT) |
552 ((params->hd_pol & CCDC_HD_POL_MASK) << CCDC_HD_POL_SHIFT) |
553 ((params->fid_pol & CCDC_FID_POL_MASK) << CCDC_FID_POL_SHIFT) |
554 ((params->frm_fmt & CCDC_FRM_FMT_MASK) << CCDC_FRM_FMT_SHIFT) |
555 ((config_params->data_sz & CCDC_DATA_SZ_MASK) <<
556 CCDC_DATA_SZ_SHIFT) |
557 ((params->pix_fmt & CCDC_PIX_FMT_MASK) << CCDC_PIX_FMT_SHIFT) |
558 CCDC_WEN_ENABLE | CCDC_VDHDEN_ENABLE);
559
560 /* Enable and configure aLaw register if needed */
561 if (config_params->alaw.enable) {
562 val = ((config_params->alaw.gama_wd &
563 CCDC_ALAW_GAMA_WD_MASK) | CCDC_ALAW_ENABLE);
564 regw(val, CCDC_ALAW);
565 dev_dbg(ccdc_cfg.dev, "\nWriting 0x%x to ALAW...\n", val);
566 }
567
568 /* Configure video window */
569 ccdc_setwin(&params->win, params->frm_fmt, CCDC_PPC_RAW);
570
571 /* Configure Black Clamp */
572 ccdc_config_black_clamp(&config_params->blk_clamp);
573
574 /* Configure Black level compensation */
575 ccdc_config_black_compense(&config_params->blk_comp);
576
577 /* Configure Fault Pixel Correction */
578 ccdc_config_fpc(&config_params->fault_pxl);
579
580 /* If data size is 8 bit then pack the data */
581 if ((config_params->data_sz == CCDC_DATA_8BITS) ||
582 config_params->alaw.enable)
583 syn_mode |= CCDC_DATA_PACK_ENABLE;
584
585 #ifdef CONFIG_DM644X_VIDEO_PORT_ENABLE
586 /* enable video port */
587 val = CCDC_ENABLE_VIDEO_PORT;
588 #else
589 /* disable video port */
590 val = CCDC_DISABLE_VIDEO_PORT;
591 #endif
592
593 if (config_params->data_sz == CCDC_DATA_8BITS)
594 val |= (CCDC_DATA_10BITS & CCDC_FMTCFG_VPIN_MASK)
595 << CCDC_FMTCFG_VPIN_SHIFT;
596 else
597 val |= (config_params->data_sz & CCDC_FMTCFG_VPIN_MASK)
598 << CCDC_FMTCFG_VPIN_SHIFT;
599 /* Write value in FMTCFG */
600 regw(val, CCDC_FMTCFG);
601
602 dev_dbg(ccdc_cfg.dev, "\nWriting 0x%x to FMTCFG...\n", val);
603 /* Configure the color pattern according to mt9t001 sensor */
604 regw(CCDC_COLPTN_VAL, CCDC_COLPTN);
605
606 dev_dbg(ccdc_cfg.dev, "\nWriting 0xBB11BB11 to COLPTN...\n");
607 /*
608 * Configure Data formatter(Video port) pixel selection
609 * (FMT_HORZ, FMT_VERT)
610 */
611 val = ((params->win.left & CCDC_FMT_HORZ_FMTSPH_MASK) <<
612 CCDC_FMT_HORZ_FMTSPH_SHIFT) |
613 (params->win.width & CCDC_FMT_HORZ_FMTLNH_MASK);
614 regw(val, CCDC_FMT_HORZ);
615
616 dev_dbg(ccdc_cfg.dev, "\nWriting 0x%x to FMT_HORZ...\n", val);
617 val = (params->win.top & CCDC_FMT_VERT_FMTSLV_MASK)
618 << CCDC_FMT_VERT_FMTSLV_SHIFT;
619 if (params->frm_fmt == CCDC_FRMFMT_PROGRESSIVE)
620 val |= (params->win.height) & CCDC_FMT_VERT_FMTLNV_MASK;
621 else
622 val |= (params->win.height >> 1) & CCDC_FMT_VERT_FMTLNV_MASK;
623
624 dev_dbg(ccdc_cfg.dev, "\nparams->win.height 0x%x ...\n",
625 params->win.height);
626 regw(val, CCDC_FMT_VERT);
627
628 dev_dbg(ccdc_cfg.dev, "\nWriting 0x%x to FMT_VERT...\n", val);
629
630 dev_dbg(ccdc_cfg.dev, "\nbelow regw(val, FMT_VERT)...");
631
632 /*
633 * Configure Horizontal offset register. If pack 8 is enabled then
634 * 1 pixel will take 1 byte
635 */
636 if ((config_params->data_sz == CCDC_DATA_8BITS) ||
637 config_params->alaw.enable)
638 regw((params->win.width + CCDC_32BYTE_ALIGN_VAL) &
639 CCDC_HSIZE_OFF_MASK, CCDC_HSIZE_OFF);
640 else
641 /* else one pixel will take 2 byte */
642 regw(((params->win.width * CCDC_TWO_BYTES_PER_PIXEL) +
643 CCDC_32BYTE_ALIGN_VAL) & CCDC_HSIZE_OFF_MASK,
644 CCDC_HSIZE_OFF);
645
646 /* Set value for SDOFST */
647 if (params->frm_fmt == CCDC_FRMFMT_INTERLACED) {
648 if (params->image_invert_enable) {
649 /* For intelace inverse mode */
650 regw(CCDC_INTERLACED_IMAGE_INVERT, CCDC_SDOFST);
651 dev_dbg(ccdc_cfg.dev, "\nWriting 0x4B6D to SDOFST..\n");
652 }
653
654 else {
655 /* For intelace non inverse mode */
656 regw(CCDC_INTERLACED_NO_IMAGE_INVERT, CCDC_SDOFST);
657 dev_dbg(ccdc_cfg.dev, "\nWriting 0x0249 to SDOFST..\n");
658 }
659 } else if (params->frm_fmt == CCDC_FRMFMT_PROGRESSIVE) {
660 regw(CCDC_PROGRESSIVE_NO_IMAGE_INVERT, CCDC_SDOFST);
661 dev_dbg(ccdc_cfg.dev, "\nWriting 0x0000 to SDOFST...\n");
662 }
663
664 /*
665 * Configure video port pixel selection (VPOUT)
666 * Here -1 is to make the height value less than FMT_VERT.FMTLNV
667 */
668 if (params->frm_fmt == CCDC_FRMFMT_PROGRESSIVE)
669 val = (((params->win.height - 1) & CCDC_VP_OUT_VERT_NUM_MASK))
670 << CCDC_VP_OUT_VERT_NUM_SHIFT;
671 else
672 val =
673 ((((params->win.height >> CCDC_INTERLACED_HEIGHT_SHIFT) -
674 1) & CCDC_VP_OUT_VERT_NUM_MASK)) <<
675 CCDC_VP_OUT_VERT_NUM_SHIFT;
676
677 val |= ((((params->win.width))) & CCDC_VP_OUT_HORZ_NUM_MASK)
678 << CCDC_VP_OUT_HORZ_NUM_SHIFT;
679 val |= (params->win.left) & CCDC_VP_OUT_HORZ_ST_MASK;
680 regw(val, CCDC_VP_OUT);
681
682 dev_dbg(ccdc_cfg.dev, "\nWriting 0x%x to VP_OUT...\n", val);
683 regw(syn_mode, CCDC_SYN_MODE);
684 dev_dbg(ccdc_cfg.dev, "\nWriting 0x%x to SYN_MODE...\n", syn_mode);
685
686 ccdc_sbl_reset();
687 dev_dbg(ccdc_cfg.dev, "\nend of ccdc_config_raw...");
688 ccdc_readregs();
689 }
690
691 static int ccdc_configure(void)
692 {
693 if (ccdc_cfg.if_type == VPFE_RAW_BAYER)
694 ccdc_config_raw();
695 else
696 ccdc_config_ycbcr();
697 return 0;
698 }
699
700 static int ccdc_set_buftype(enum ccdc_buftype buf_type)
701 {
702 if (ccdc_cfg.if_type == VPFE_RAW_BAYER)
703 ccdc_cfg.bayer.buf_type = buf_type;
704 else
705 ccdc_cfg.ycbcr.buf_type = buf_type;
706 return 0;
707 }
708
709 static enum ccdc_buftype ccdc_get_buftype(void)
710 {
711 if (ccdc_cfg.if_type == VPFE_RAW_BAYER)
712 return ccdc_cfg.bayer.buf_type;
713 return ccdc_cfg.ycbcr.buf_type;
714 }
715
716 static int ccdc_enum_pix(u32 *pix, int i)
717 {
718 int ret = -EINVAL;
719 if (ccdc_cfg.if_type == VPFE_RAW_BAYER) {
720 if (i < ARRAY_SIZE(ccdc_raw_bayer_pix_formats)) {
721 *pix = ccdc_raw_bayer_pix_formats[i];
722 ret = 0;
723 }
724 } else {
725 if (i < ARRAY_SIZE(ccdc_raw_yuv_pix_formats)) {
726 *pix = ccdc_raw_yuv_pix_formats[i];
727 ret = 0;
728 }
729 }
730 return ret;
731 }
732
733 static int ccdc_set_pixel_format(u32 pixfmt)
734 {
735 if (ccdc_cfg.if_type == VPFE_RAW_BAYER) {
736 ccdc_cfg.bayer.pix_fmt = CCDC_PIXFMT_RAW;
737 if (pixfmt == V4L2_PIX_FMT_SBGGR8)
738 ccdc_cfg.bayer.config_params.alaw.enable = 1;
739 else if (pixfmt != V4L2_PIX_FMT_SBGGR16)
740 return -EINVAL;
741 } else {
742 if (pixfmt == V4L2_PIX_FMT_YUYV)
743 ccdc_cfg.ycbcr.pix_order = CCDC_PIXORDER_YCBYCR;
744 else if (pixfmt == V4L2_PIX_FMT_UYVY)
745 ccdc_cfg.ycbcr.pix_order = CCDC_PIXORDER_CBYCRY;
746 else
747 return -EINVAL;
748 }
749 return 0;
750 }
751
752 static u32 ccdc_get_pixel_format(void)
753 {
754 struct ccdc_a_law *alaw = &ccdc_cfg.bayer.config_params.alaw;
755 u32 pixfmt;
756
757 if (ccdc_cfg.if_type == VPFE_RAW_BAYER)
758 if (alaw->enable)
759 pixfmt = V4L2_PIX_FMT_SBGGR8;
760 else
761 pixfmt = V4L2_PIX_FMT_SBGGR16;
762 else {
763 if (ccdc_cfg.ycbcr.pix_order == CCDC_PIXORDER_YCBYCR)
764 pixfmt = V4L2_PIX_FMT_YUYV;
765 else
766 pixfmt = V4L2_PIX_FMT_UYVY;
767 }
768 return pixfmt;
769 }
770
771 static int ccdc_set_image_window(struct v4l2_rect *win)
772 {
773 if (ccdc_cfg.if_type == VPFE_RAW_BAYER)
774 ccdc_cfg.bayer.win = *win;
775 else
776 ccdc_cfg.ycbcr.win = *win;
777 return 0;
778 }
779
780 static void ccdc_get_image_window(struct v4l2_rect *win)
781 {
782 if (ccdc_cfg.if_type == VPFE_RAW_BAYER)
783 *win = ccdc_cfg.bayer.win;
784 else
785 *win = ccdc_cfg.ycbcr.win;
786 }
787
788 static unsigned int ccdc_get_line_length(void)
789 {
790 struct ccdc_config_params_raw *config_params =
791 &ccdc_cfg.bayer.config_params;
792 unsigned int len;
793
794 if (ccdc_cfg.if_type == VPFE_RAW_BAYER) {
795 if ((config_params->alaw.enable) ||
796 (config_params->data_sz == CCDC_DATA_8BITS))
797 len = ccdc_cfg.bayer.win.width;
798 else
799 len = ccdc_cfg.bayer.win.width * 2;
800 } else
801 len = ccdc_cfg.ycbcr.win.width * 2;
802 return ALIGN(len, 32);
803 }
804
805 static int ccdc_set_frame_format(enum ccdc_frmfmt frm_fmt)
806 {
807 if (ccdc_cfg.if_type == VPFE_RAW_BAYER)
808 ccdc_cfg.bayer.frm_fmt = frm_fmt;
809 else
810 ccdc_cfg.ycbcr.frm_fmt = frm_fmt;
811 return 0;
812 }
813
814 static enum ccdc_frmfmt ccdc_get_frame_format(void)
815 {
816 if (ccdc_cfg.if_type == VPFE_RAW_BAYER)
817 return ccdc_cfg.bayer.frm_fmt;
818 else
819 return ccdc_cfg.ycbcr.frm_fmt;
820 }
821
822 static int ccdc_getfid(void)
823 {
824 return (regr(CCDC_SYN_MODE) >> 15) & 1;
825 }
826
827 /* misc operations */
828 static inline void ccdc_setfbaddr(unsigned long addr)
829 {
830 regw(addr & 0xffffffe0, CCDC_SDR_ADDR);
831 }
832
833 static int ccdc_set_hw_if_params(struct vpfe_hw_if_param *params)
834 {
835 ccdc_cfg.if_type = params->if_type;
836
837 switch (params->if_type) {
838 case VPFE_BT656:
839 case VPFE_YCBCR_SYNC_16:
840 case VPFE_YCBCR_SYNC_8:
841 case VPFE_BT656_10BIT:
842 ccdc_cfg.ycbcr.vd_pol = params->vdpol;
843 ccdc_cfg.ycbcr.hd_pol = params->hdpol;
844 break;
845 default:
846 /* TODO add support for raw bayer here */
847 return -EINVAL;
848 }
849 return 0;
850 }
851
852 static void ccdc_save_context(void)
853 {
854 ccdc_ctx[CCDC_PCR >> 2] = regr(CCDC_PCR);
855 ccdc_ctx[CCDC_SYN_MODE >> 2] = regr(CCDC_SYN_MODE);
856 ccdc_ctx[CCDC_HD_VD_WID >> 2] = regr(CCDC_HD_VD_WID);
857 ccdc_ctx[CCDC_PIX_LINES >> 2] = regr(CCDC_PIX_LINES);
858 ccdc_ctx[CCDC_HORZ_INFO >> 2] = regr(CCDC_HORZ_INFO);
859 ccdc_ctx[CCDC_VERT_START >> 2] = regr(CCDC_VERT_START);
860 ccdc_ctx[CCDC_VERT_LINES >> 2] = regr(CCDC_VERT_LINES);
861 ccdc_ctx[CCDC_CULLING >> 2] = regr(CCDC_CULLING);
862 ccdc_ctx[CCDC_HSIZE_OFF >> 2] = regr(CCDC_HSIZE_OFF);
863 ccdc_ctx[CCDC_SDOFST >> 2] = regr(CCDC_SDOFST);
864 ccdc_ctx[CCDC_SDR_ADDR >> 2] = regr(CCDC_SDR_ADDR);
865 ccdc_ctx[CCDC_CLAMP >> 2] = regr(CCDC_CLAMP);
866 ccdc_ctx[CCDC_DCSUB >> 2] = regr(CCDC_DCSUB);
867 ccdc_ctx[CCDC_COLPTN >> 2] = regr(CCDC_COLPTN);
868 ccdc_ctx[CCDC_BLKCMP >> 2] = regr(CCDC_BLKCMP);
869 ccdc_ctx[CCDC_FPC >> 2] = regr(CCDC_FPC);
870 ccdc_ctx[CCDC_FPC_ADDR >> 2] = regr(CCDC_FPC_ADDR);
871 ccdc_ctx[CCDC_VDINT >> 2] = regr(CCDC_VDINT);
872 ccdc_ctx[CCDC_ALAW >> 2] = regr(CCDC_ALAW);
873 ccdc_ctx[CCDC_REC656IF >> 2] = regr(CCDC_REC656IF);
874 ccdc_ctx[CCDC_CCDCFG >> 2] = regr(CCDC_CCDCFG);
875 ccdc_ctx[CCDC_FMTCFG >> 2] = regr(CCDC_FMTCFG);
876 ccdc_ctx[CCDC_FMT_HORZ >> 2] = regr(CCDC_FMT_HORZ);
877 ccdc_ctx[CCDC_FMT_VERT >> 2] = regr(CCDC_FMT_VERT);
878 ccdc_ctx[CCDC_FMT_ADDR0 >> 2] = regr(CCDC_FMT_ADDR0);
879 ccdc_ctx[CCDC_FMT_ADDR1 >> 2] = regr(CCDC_FMT_ADDR1);
880 ccdc_ctx[CCDC_FMT_ADDR2 >> 2] = regr(CCDC_FMT_ADDR2);
881 ccdc_ctx[CCDC_FMT_ADDR3 >> 2] = regr(CCDC_FMT_ADDR3);
882 ccdc_ctx[CCDC_FMT_ADDR4 >> 2] = regr(CCDC_FMT_ADDR4);
883 ccdc_ctx[CCDC_FMT_ADDR5 >> 2] = regr(CCDC_FMT_ADDR5);
884 ccdc_ctx[CCDC_FMT_ADDR6 >> 2] = regr(CCDC_FMT_ADDR6);
885 ccdc_ctx[CCDC_FMT_ADDR7 >> 2] = regr(CCDC_FMT_ADDR7);
886 ccdc_ctx[CCDC_PRGEVEN_0 >> 2] = regr(CCDC_PRGEVEN_0);
887 ccdc_ctx[CCDC_PRGEVEN_1 >> 2] = regr(CCDC_PRGEVEN_1);
888 ccdc_ctx[CCDC_PRGODD_0 >> 2] = regr(CCDC_PRGODD_0);
889 ccdc_ctx[CCDC_PRGODD_1 >> 2] = regr(CCDC_PRGODD_1);
890 ccdc_ctx[CCDC_VP_OUT >> 2] = regr(CCDC_VP_OUT);
891 }
892
893 static void ccdc_restore_context(void)
894 {
895 regw(ccdc_ctx[CCDC_SYN_MODE >> 2], CCDC_SYN_MODE);
896 regw(ccdc_ctx[CCDC_HD_VD_WID >> 2], CCDC_HD_VD_WID);
897 regw(ccdc_ctx[CCDC_PIX_LINES >> 2], CCDC_PIX_LINES);
898 regw(ccdc_ctx[CCDC_HORZ_INFO >> 2], CCDC_HORZ_INFO);
899 regw(ccdc_ctx[CCDC_VERT_START >> 2], CCDC_VERT_START);
900 regw(ccdc_ctx[CCDC_VERT_LINES >> 2], CCDC_VERT_LINES);
901 regw(ccdc_ctx[CCDC_CULLING >> 2], CCDC_CULLING);
902 regw(ccdc_ctx[CCDC_HSIZE_OFF >> 2], CCDC_HSIZE_OFF);
903 regw(ccdc_ctx[CCDC_SDOFST >> 2], CCDC_SDOFST);
904 regw(ccdc_ctx[CCDC_SDR_ADDR >> 2], CCDC_SDR_ADDR);
905 regw(ccdc_ctx[CCDC_CLAMP >> 2], CCDC_CLAMP);
906 regw(ccdc_ctx[CCDC_DCSUB >> 2], CCDC_DCSUB);
907 regw(ccdc_ctx[CCDC_COLPTN >> 2], CCDC_COLPTN);
908 regw(ccdc_ctx[CCDC_BLKCMP >> 2], CCDC_BLKCMP);
909 regw(ccdc_ctx[CCDC_FPC >> 2], CCDC_FPC);
910 regw(ccdc_ctx[CCDC_FPC_ADDR >> 2], CCDC_FPC_ADDR);
911 regw(ccdc_ctx[CCDC_VDINT >> 2], CCDC_VDINT);
912 regw(ccdc_ctx[CCDC_ALAW >> 2], CCDC_ALAW);
913 regw(ccdc_ctx[CCDC_REC656IF >> 2], CCDC_REC656IF);
914 regw(ccdc_ctx[CCDC_CCDCFG >> 2], CCDC_CCDCFG);
915 regw(ccdc_ctx[CCDC_FMTCFG >> 2], CCDC_FMTCFG);
916 regw(ccdc_ctx[CCDC_FMT_HORZ >> 2], CCDC_FMT_HORZ);
917 regw(ccdc_ctx[CCDC_FMT_VERT >> 2], CCDC_FMT_VERT);
918 regw(ccdc_ctx[CCDC_FMT_ADDR0 >> 2], CCDC_FMT_ADDR0);
919 regw(ccdc_ctx[CCDC_FMT_ADDR1 >> 2], CCDC_FMT_ADDR1);
920 regw(ccdc_ctx[CCDC_FMT_ADDR2 >> 2], CCDC_FMT_ADDR2);
921 regw(ccdc_ctx[CCDC_FMT_ADDR3 >> 2], CCDC_FMT_ADDR3);
922 regw(ccdc_ctx[CCDC_FMT_ADDR4 >> 2], CCDC_FMT_ADDR4);
923 regw(ccdc_ctx[CCDC_FMT_ADDR5 >> 2], CCDC_FMT_ADDR5);
924 regw(ccdc_ctx[CCDC_FMT_ADDR6 >> 2], CCDC_FMT_ADDR6);
925 regw(ccdc_ctx[CCDC_FMT_ADDR7 >> 2], CCDC_FMT_ADDR7);
926 regw(ccdc_ctx[CCDC_PRGEVEN_0 >> 2], CCDC_PRGEVEN_0);
927 regw(ccdc_ctx[CCDC_PRGEVEN_1 >> 2], CCDC_PRGEVEN_1);
928 regw(ccdc_ctx[CCDC_PRGODD_0 >> 2], CCDC_PRGODD_0);
929 regw(ccdc_ctx[CCDC_PRGODD_1 >> 2], CCDC_PRGODD_1);
930 regw(ccdc_ctx[CCDC_VP_OUT >> 2], CCDC_VP_OUT);
931 regw(ccdc_ctx[CCDC_PCR >> 2], CCDC_PCR);
932 }
933 static struct ccdc_hw_device ccdc_hw_dev = {
934 .name = "DM6446 CCDC",
935 .owner = THIS_MODULE,
936 .hw_ops = {
937 .open = ccdc_open,
938 .close = ccdc_close,
939 .reset = ccdc_sbl_reset,
940 .enable = ccdc_enable,
941 .set_hw_if_params = ccdc_set_hw_if_params,
942 .set_params = ccdc_set_params,
943 .configure = ccdc_configure,
944 .set_buftype = ccdc_set_buftype,
945 .get_buftype = ccdc_get_buftype,
946 .enum_pix = ccdc_enum_pix,
947 .set_pixel_format = ccdc_set_pixel_format,
948 .get_pixel_format = ccdc_get_pixel_format,
949 .set_frame_format = ccdc_set_frame_format,
950 .get_frame_format = ccdc_get_frame_format,
951 .set_image_window = ccdc_set_image_window,
952 .get_image_window = ccdc_get_image_window,
953 .get_line_length = ccdc_get_line_length,
954 .setfbaddr = ccdc_setfbaddr,
955 .getfid = ccdc_getfid,
956 },
957 };
958
959 static int __init dm644x_ccdc_probe(struct platform_device *pdev)
960 {
961 struct resource *res;
962 int status = 0;
963
964 /*
965 * first try to register with vpfe. If not correct platform, then we
966 * don't have to iomap
967 */
968 status = vpfe_register_ccdc_device(&ccdc_hw_dev);
969 if (status < 0)
970 return status;
971
972 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
973 if (!res) {
974 status = -ENODEV;
975 goto fail_nores;
976 }
977
978 res = request_mem_region(res->start, resource_size(res), res->name);
979 if (!res) {
980 status = -EBUSY;
981 goto fail_nores;
982 }
983
984 ccdc_cfg.base_addr = ioremap_nocache(res->start, resource_size(res));
985 if (!ccdc_cfg.base_addr) {
986 status = -ENOMEM;
987 goto fail_nomem;
988 }
989
990 /* Get and enable Master clock */
991 ccdc_cfg.mclk = clk_get(&pdev->dev, "master");
992 if (IS_ERR(ccdc_cfg.mclk)) {
993 status = PTR_ERR(ccdc_cfg.mclk);
994 goto fail_nomap;
995 }
996 if (clk_enable(ccdc_cfg.mclk)) {
997 status = -ENODEV;
998 goto fail_mclk;
999 }
1000
1001 /* Get and enable Slave clock */
1002 ccdc_cfg.sclk = clk_get(&pdev->dev, "slave");
1003 if (IS_ERR(ccdc_cfg.sclk)) {
1004 status = PTR_ERR(ccdc_cfg.sclk);
1005 goto fail_mclk;
1006 }
1007 if (clk_enable(ccdc_cfg.sclk)) {
1008 status = -ENODEV;
1009 goto fail_sclk;
1010 }
1011 ccdc_cfg.dev = &pdev->dev;
1012 printk(KERN_NOTICE "%s is registered with vpfe.\n", ccdc_hw_dev.name);
1013 return 0;
1014 fail_sclk:
1015 clk_put(ccdc_cfg.sclk);
1016 fail_mclk:
1017 clk_put(ccdc_cfg.mclk);
1018 fail_nomap:
1019 iounmap(ccdc_cfg.base_addr);
1020 fail_nomem:
1021 release_mem_region(res->start, resource_size(res));
1022 fail_nores:
1023 vpfe_unregister_ccdc_device(&ccdc_hw_dev);
1024 return status;
1025 }
1026
1027 static int dm644x_ccdc_remove(struct platform_device *pdev)
1028 {
1029 struct resource *res;
1030
1031 clk_put(ccdc_cfg.mclk);
1032 clk_put(ccdc_cfg.sclk);
1033 iounmap(ccdc_cfg.base_addr);
1034 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
1035 if (res)
1036 release_mem_region(res->start, resource_size(res));
1037 vpfe_unregister_ccdc_device(&ccdc_hw_dev);
1038 return 0;
1039 }
1040
1041 static int dm644x_ccdc_suspend(struct device *dev)
1042 {
1043 /* Save CCDC context */
1044 ccdc_save_context();
1045 /* Disable CCDC */
1046 ccdc_enable(0);
1047 /* Disable both master and slave clock */
1048 clk_disable(ccdc_cfg.mclk);
1049 clk_disable(ccdc_cfg.sclk);
1050
1051 return 0;
1052 }
1053
1054 static int dm644x_ccdc_resume(struct device *dev)
1055 {
1056 /* Enable both master and slave clock */
1057 clk_enable(ccdc_cfg.mclk);
1058 clk_enable(ccdc_cfg.sclk);
1059 /* Restore CCDC context */
1060 ccdc_restore_context();
1061
1062 return 0;
1063 }
1064
1065 static const struct dev_pm_ops dm644x_ccdc_pm_ops = {
1066 .suspend = dm644x_ccdc_suspend,
1067 .resume = dm644x_ccdc_resume,
1068 };
1069
1070 static struct platform_driver dm644x_ccdc_driver = {
1071 .driver = {
1072 .name = "dm644x_ccdc",
1073 .owner = THIS_MODULE,
1074 .pm = &dm644x_ccdc_pm_ops,
1075 },
1076 .remove = __devexit_p(dm644x_ccdc_remove),
1077 .probe = dm644x_ccdc_probe,
1078 };
1079
1080 static int __init dm644x_ccdc_init(void)
1081 {
1082 return platform_driver_register(&dm644x_ccdc_driver);
1083 }
1084
1085 static void __exit dm644x_ccdc_exit(void)
1086 {
1087 platform_driver_unregister(&dm644x_ccdc_driver);
1088 }
1089
1090 module_init(dm644x_ccdc_init);
1091 module_exit(dm644x_ccdc_exit);
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