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 #include <linux/module.h>
44
45 #include <media/davinci/dm644x_ccdc.h>
46 #include <media/davinci/vpss.h>
47
48 #include "dm644x_ccdc_regs.h"
49 #include "ccdc_hw_device.h"
50
51 MODULE_LICENSE("GPL");
52 MODULE_DESCRIPTION("CCDC Driver for DM6446");
53 MODULE_AUTHOR("Texas Instruments");
54
55 static struct ccdc_oper_config {
56 struct device *dev;
57 /* CCDC interface type */
58 enum vpfe_hw_if_type if_type;
59 /* Raw Bayer configuration */
60 struct ccdc_params_raw bayer;
61 /* YCbCr configuration */
62 struct ccdc_params_ycbcr ycbcr;
63 /* Master clock */
64 struct clk *mclk;
65 /* slave clock */
66 struct clk *sclk;
67 /* ccdc base address */
68 void __iomem *base_addr;
69 } ccdc_cfg = {
70 /* Raw configurations */
71 .bayer = {
72 .pix_fmt = CCDC_PIXFMT_RAW,
73 .frm_fmt = CCDC_FRMFMT_PROGRESSIVE,
74 .win = CCDC_WIN_VGA,
75 .fid_pol = VPFE_PINPOL_POSITIVE,
76 .vd_pol = VPFE_PINPOL_POSITIVE,
77 .hd_pol = VPFE_PINPOL_POSITIVE,
78 .config_params = {
79 .data_sz = CCDC_DATA_10BITS,
80 },
81 },
82 .ycbcr = {
83 .pix_fmt = CCDC_PIXFMT_YCBCR_8BIT,
84 .frm_fmt = CCDC_FRMFMT_INTERLACED,
85 .win = CCDC_WIN_PAL,
86 .fid_pol = VPFE_PINPOL_POSITIVE,
87 .vd_pol = VPFE_PINPOL_POSITIVE,
88 .hd_pol = VPFE_PINPOL_POSITIVE,
89 .bt656_enable = 1,
90 .pix_order = CCDC_PIXORDER_CBYCRY,
91 .buf_type = CCDC_BUFTYPE_FLD_INTERLEAVED
92 },
93 };
94
95 #define CCDC_MAX_RAW_YUV_FORMATS 2
96
97 /* Raw Bayer formats */
98 static u32 ccdc_raw_bayer_pix_formats[] =
99 {V4L2_PIX_FMT_SBGGR8, V4L2_PIX_FMT_SBGGR16};
100
101 /* Raw YUV formats */
102 static u32 ccdc_raw_yuv_pix_formats[] =
103 {V4L2_PIX_FMT_UYVY, V4L2_PIX_FMT_YUYV};
104
105 /* CCDC Save/Restore context */
106 static u32 ccdc_ctx[CCDC_REG_END / sizeof(u32)];
107
108 /* register access routines */
regr(u32 offset)109 static inline u32 regr(u32 offset)
110 {
111 return __raw_readl(ccdc_cfg.base_addr + offset);
112 }
113
regw(u32 val,u32 offset)114 static inline void regw(u32 val, u32 offset)
115 {
116 __raw_writel(val, ccdc_cfg.base_addr + offset);
117 }
118
ccdc_enable(int flag)119 static void ccdc_enable(int flag)
120 {
121 regw(flag, CCDC_PCR);
122 }
123
ccdc_enable_vport(int flag)124 static void ccdc_enable_vport(int flag)
125 {
126 if (flag)
127 /* enable video port */
128 regw(CCDC_ENABLE_VIDEO_PORT, CCDC_FMTCFG);
129 else
130 regw(CCDC_DISABLE_VIDEO_PORT, CCDC_FMTCFG);
131 }
132
133 /*
134 * ccdc_setwin()
135 * This function will configure the window size
136 * to be capture in CCDC reg
137 */
ccdc_setwin(struct v4l2_rect * image_win,enum ccdc_frmfmt frm_fmt,int ppc)138 void ccdc_setwin(struct v4l2_rect *image_win,
139 enum ccdc_frmfmt frm_fmt,
140 int ppc)
141 {
142 int horz_start, horz_nr_pixels;
143 int vert_start, vert_nr_lines;
144 int val = 0, mid_img = 0;
145
146 dev_dbg(ccdc_cfg.dev, "\nStarting ccdc_setwin...");
147 /*
148 * ppc - per pixel count. indicates how many pixels per cell
149 * output to SDRAM. example, for ycbcr, it is one y and one c, so 2.
150 * raw capture this is 1
151 */
152 horz_start = image_win->left << (ppc - 1);
153 horz_nr_pixels = (image_win->width << (ppc - 1)) - 1;
154 regw((horz_start << CCDC_HORZ_INFO_SPH_SHIFT) | horz_nr_pixels,
155 CCDC_HORZ_INFO);
156
157 vert_start = image_win->top;
158
159 if (frm_fmt == CCDC_FRMFMT_INTERLACED) {
160 vert_nr_lines = (image_win->height >> 1) - 1;
161 vert_start >>= 1;
162 /* Since first line doesn't have any data */
163 vert_start += 1;
164 /* configure VDINT0 */
165 val = (vert_start << CCDC_VDINT_VDINT0_SHIFT);
166 regw(val, CCDC_VDINT);
167
168 } else {
169 /* Since first line doesn't have any data */
170 vert_start += 1;
171 vert_nr_lines = image_win->height - 1;
172 /*
173 * configure VDINT0 and VDINT1. VDINT1 will be at half
174 * of image height
175 */
176 mid_img = vert_start + (image_win->height / 2);
177 val = (vert_start << CCDC_VDINT_VDINT0_SHIFT) |
178 (mid_img & CCDC_VDINT_VDINT1_MASK);
179 regw(val, CCDC_VDINT);
180
181 }
182 regw((vert_start << CCDC_VERT_START_SLV0_SHIFT) | vert_start,
183 CCDC_VERT_START);
184 regw(vert_nr_lines, CCDC_VERT_LINES);
185 dev_dbg(ccdc_cfg.dev, "\nEnd of ccdc_setwin...");
186 }
187
ccdc_readregs(void)188 static void ccdc_readregs(void)
189 {
190 unsigned int val = 0;
191
192 val = regr(CCDC_ALAW);
193 dev_notice(ccdc_cfg.dev, "\nReading 0x%x to ALAW...\n", val);
194 val = regr(CCDC_CLAMP);
195 dev_notice(ccdc_cfg.dev, "\nReading 0x%x to CLAMP...\n", val);
196 val = regr(CCDC_DCSUB);
197 dev_notice(ccdc_cfg.dev, "\nReading 0x%x to DCSUB...\n", val);
198 val = regr(CCDC_BLKCMP);
199 dev_notice(ccdc_cfg.dev, "\nReading 0x%x to BLKCMP...\n", val);
200 val = regr(CCDC_FPC_ADDR);
201 dev_notice(ccdc_cfg.dev, "\nReading 0x%x to FPC_ADDR...\n", val);
202 val = regr(CCDC_FPC);
203 dev_notice(ccdc_cfg.dev, "\nReading 0x%x to FPC...\n", val);
204 val = regr(CCDC_FMTCFG);
205 dev_notice(ccdc_cfg.dev, "\nReading 0x%x to FMTCFG...\n", val);
206 val = regr(CCDC_COLPTN);
207 dev_notice(ccdc_cfg.dev, "\nReading 0x%x to COLPTN...\n", val);
208 val = regr(CCDC_FMT_HORZ);
209 dev_notice(ccdc_cfg.dev, "\nReading 0x%x to FMT_HORZ...\n", val);
210 val = regr(CCDC_FMT_VERT);
211 dev_notice(ccdc_cfg.dev, "\nReading 0x%x to FMT_VERT...\n", val);
212 val = regr(CCDC_HSIZE_OFF);
213 dev_notice(ccdc_cfg.dev, "\nReading 0x%x to HSIZE_OFF...\n", val);
214 val = regr(CCDC_SDOFST);
215 dev_notice(ccdc_cfg.dev, "\nReading 0x%x to SDOFST...\n", val);
216 val = regr(CCDC_VP_OUT);
217 dev_notice(ccdc_cfg.dev, "\nReading 0x%x to VP_OUT...\n", val);
218 val = regr(CCDC_SYN_MODE);
219 dev_notice(ccdc_cfg.dev, "\nReading 0x%x to SYN_MODE...\n", val);
220 val = regr(CCDC_HORZ_INFO);
221 dev_notice(ccdc_cfg.dev, "\nReading 0x%x to HORZ_INFO...\n", val);
222 val = regr(CCDC_VERT_START);
223 dev_notice(ccdc_cfg.dev, "\nReading 0x%x to VERT_START...\n", val);
224 val = regr(CCDC_VERT_LINES);
225 dev_notice(ccdc_cfg.dev, "\nReading 0x%x to VERT_LINES...\n", val);
226 }
227
validate_ccdc_param(struct ccdc_config_params_raw * ccdcparam)228 static int validate_ccdc_param(struct ccdc_config_params_raw *ccdcparam)
229 {
230 if (ccdcparam->alaw.enable) {
231 if ((ccdcparam->alaw.gama_wd > CCDC_GAMMA_BITS_09_0) ||
232 (ccdcparam->alaw.gama_wd < CCDC_GAMMA_BITS_15_6) ||
233 (ccdcparam->alaw.gama_wd < ccdcparam->data_sz)) {
234 dev_dbg(ccdc_cfg.dev, "\nInvalid data line select");
235 return -1;
236 }
237 }
238 return 0;
239 }
240
ccdc_update_raw_params(struct ccdc_config_params_raw * raw_params)241 static int ccdc_update_raw_params(struct ccdc_config_params_raw *raw_params)
242 {
243 struct ccdc_config_params_raw *config_params =
244 &ccdc_cfg.bayer.config_params;
245 unsigned int *fpc_virtaddr = NULL;
246 unsigned int *fpc_physaddr = NULL;
247
248 memcpy(config_params, raw_params, sizeof(*raw_params));
249 /*
250 * allocate memory for fault pixel table and copy the user
251 * values to the table
252 */
253 if (!config_params->fault_pxl.enable)
254 return 0;
255
256 fpc_physaddr = (unsigned int *)config_params->fault_pxl.fpc_table_addr;
257 fpc_virtaddr = (unsigned int *)phys_to_virt(
258 (unsigned long)fpc_physaddr);
259 /*
260 * Allocate memory for FPC table if current
261 * FPC table buffer is not big enough to
262 * accommodate FPC Number requested
263 */
264 if (raw_params->fault_pxl.fp_num != config_params->fault_pxl.fp_num) {
265 if (fpc_physaddr != NULL) {
266 free_pages((unsigned long)fpc_physaddr,
267 get_order
268 (config_params->fault_pxl.fp_num *
269 FP_NUM_BYTES));
270 }
271
272 /* Allocate memory for FPC table */
273 fpc_virtaddr =
274 (unsigned int *)__get_free_pages(GFP_KERNEL | GFP_DMA,
275 get_order(raw_params->
276 fault_pxl.fp_num *
277 FP_NUM_BYTES));
278
279 if (fpc_virtaddr == NULL) {
280 dev_dbg(ccdc_cfg.dev,
281 "\nUnable to allocate memory for FPC");
282 return -EFAULT;
283 }
284 fpc_physaddr =
285 (unsigned int *)virt_to_phys((void *)fpc_virtaddr);
286 }
287
288 /* Copy number of fault pixels and FPC table */
289 config_params->fault_pxl.fp_num = raw_params->fault_pxl.fp_num;
290 if (copy_from_user(fpc_virtaddr,
291 (void __user *)raw_params->fault_pxl.fpc_table_addr,
292 config_params->fault_pxl.fp_num * FP_NUM_BYTES)) {
293 dev_dbg(ccdc_cfg.dev, "\n copy_from_user failed");
294 return -EFAULT;
295 }
296 config_params->fault_pxl.fpc_table_addr = (unsigned int)fpc_physaddr;
297 return 0;
298 }
299
ccdc_close(struct device * dev)300 static int ccdc_close(struct device *dev)
301 {
302 struct ccdc_config_params_raw *config_params =
303 &ccdc_cfg.bayer.config_params;
304 unsigned int *fpc_physaddr = NULL, *fpc_virtaddr = NULL;
305
306 fpc_physaddr = (unsigned int *)config_params->fault_pxl.fpc_table_addr;
307
308 if (fpc_physaddr != NULL) {
309 fpc_virtaddr = (unsigned int *)
310 phys_to_virt((unsigned long)fpc_physaddr);
311 free_pages((unsigned long)fpc_virtaddr,
312 get_order(config_params->fault_pxl.fp_num *
313 FP_NUM_BYTES));
314 }
315 return 0;
316 }
317
318 /*
319 * ccdc_restore_defaults()
320 * This function will write defaults to all CCDC registers
321 */
ccdc_restore_defaults(void)322 static void ccdc_restore_defaults(void)
323 {
324 int i;
325
326 /* disable CCDC */
327 ccdc_enable(0);
328 /* set all registers to default value */
329 for (i = 4; i <= 0x94; i += 4)
330 regw(0, i);
331 regw(CCDC_NO_CULLING, CCDC_CULLING);
332 regw(CCDC_GAMMA_BITS_11_2, CCDC_ALAW);
333 }
334
ccdc_open(struct device * device)335 static int ccdc_open(struct device *device)
336 {
337 ccdc_restore_defaults();
338 if (ccdc_cfg.if_type == VPFE_RAW_BAYER)
339 ccdc_enable_vport(1);
340 return 0;
341 }
342
ccdc_sbl_reset(void)343 static void ccdc_sbl_reset(void)
344 {
345 vpss_clear_wbl_overflow(VPSS_PCR_CCDC_WBL_O);
346 }
347
348 /* Parameter operations */
ccdc_set_params(void __user * params)349 static int ccdc_set_params(void __user *params)
350 {
351 struct ccdc_config_params_raw ccdc_raw_params;
352 int x;
353
354 if (ccdc_cfg.if_type != VPFE_RAW_BAYER)
355 return -EINVAL;
356
357 x = copy_from_user(&ccdc_raw_params, params, sizeof(ccdc_raw_params));
358 if (x) {
359 dev_dbg(ccdc_cfg.dev, "ccdc_set_params: error in copying"
360 "ccdc params, %d\n", x);
361 return -EFAULT;
362 }
363
364 if (!validate_ccdc_param(&ccdc_raw_params)) {
365 if (!ccdc_update_raw_params(&ccdc_raw_params))
366 return 0;
367 }
368 return -EINVAL;
369 }
370
371 /*
372 * ccdc_config_ycbcr()
373 * This function will configure CCDC for YCbCr video capture
374 */
ccdc_config_ycbcr(void)375 void ccdc_config_ycbcr(void)
376 {
377 struct ccdc_params_ycbcr *params = &ccdc_cfg.ycbcr;
378 u32 syn_mode;
379
380 dev_dbg(ccdc_cfg.dev, "\nStarting ccdc_config_ycbcr...");
381 /*
382 * first restore the CCDC registers to default values
383 * This is important since we assume default values to be set in
384 * a lot of registers that we didn't touch
385 */
386 ccdc_restore_defaults();
387
388 /*
389 * configure pixel format, frame format, configure video frame
390 * format, enable output to SDRAM, enable internal timing generator
391 * and 8bit pack mode
392 */
393 syn_mode = (((params->pix_fmt & CCDC_SYN_MODE_INPMOD_MASK) <<
394 CCDC_SYN_MODE_INPMOD_SHIFT) |
395 ((params->frm_fmt & CCDC_SYN_FLDMODE_MASK) <<
396 CCDC_SYN_FLDMODE_SHIFT) | CCDC_VDHDEN_ENABLE |
397 CCDC_WEN_ENABLE | CCDC_DATA_PACK_ENABLE);
398
399 /* setup BT.656 sync mode */
400 if (params->bt656_enable) {
401 regw(CCDC_REC656IF_BT656_EN, CCDC_REC656IF);
402
403 /*
404 * configure the FID, VD, HD pin polarity,
405 * fld,hd pol positive, vd negative, 8-bit data
406 */
407 syn_mode |= CCDC_SYN_MODE_VD_POL_NEGATIVE;
408 if (ccdc_cfg.if_type == VPFE_BT656_10BIT)
409 syn_mode |= CCDC_SYN_MODE_10BITS;
410 else
411 syn_mode |= CCDC_SYN_MODE_8BITS;
412 } else {
413 /* y/c external sync mode */
414 syn_mode |= (((params->fid_pol & CCDC_FID_POL_MASK) <<
415 CCDC_FID_POL_SHIFT) |
416 ((params->hd_pol & CCDC_HD_POL_MASK) <<
417 CCDC_HD_POL_SHIFT) |
418 ((params->vd_pol & CCDC_VD_POL_MASK) <<
419 CCDC_VD_POL_SHIFT));
420 }
421 regw(syn_mode, CCDC_SYN_MODE);
422
423 /* configure video window */
424 ccdc_setwin(¶ms->win, params->frm_fmt, 2);
425
426 /*
427 * configure the order of y cb cr in SDRAM, and disable latch
428 * internal register on vsync
429 */
430 if (ccdc_cfg.if_type == VPFE_BT656_10BIT)
431 regw((params->pix_order << CCDC_CCDCFG_Y8POS_SHIFT) |
432 CCDC_LATCH_ON_VSYNC_DISABLE | CCDC_CCDCFG_BW656_10BIT,
433 CCDC_CCDCFG);
434 else
435 regw((params->pix_order << CCDC_CCDCFG_Y8POS_SHIFT) |
436 CCDC_LATCH_ON_VSYNC_DISABLE, CCDC_CCDCFG);
437
438 /*
439 * configure the horizontal line offset. This should be a
440 * on 32 byte boundary. So clear LSB 5 bits
441 */
442 regw(((params->win.width * 2 + 31) & ~0x1f), CCDC_HSIZE_OFF);
443
444 /* configure the memory line offset */
445 if (params->buf_type == CCDC_BUFTYPE_FLD_INTERLEAVED)
446 /* two fields are interleaved in memory */
447 regw(CCDC_SDOFST_FIELD_INTERLEAVED, CCDC_SDOFST);
448
449 ccdc_sbl_reset();
450 dev_dbg(ccdc_cfg.dev, "\nEnd of ccdc_config_ycbcr...\n");
451 }
452
ccdc_config_black_clamp(struct ccdc_black_clamp * bclamp)453 static void ccdc_config_black_clamp(struct ccdc_black_clamp *bclamp)
454 {
455 u32 val;
456
457 if (!bclamp->enable) {
458 /* configure DCSub */
459 val = (bclamp->dc_sub) & CCDC_BLK_DC_SUB_MASK;
460 regw(val, CCDC_DCSUB);
461 dev_dbg(ccdc_cfg.dev, "\nWriting 0x%x to DCSUB...\n", val);
462 regw(CCDC_CLAMP_DEFAULT_VAL, CCDC_CLAMP);
463 dev_dbg(ccdc_cfg.dev, "\nWriting 0x0000 to CLAMP...\n");
464 return;
465 }
466 /*
467 * Configure gain, Start pixel, No of line to be avg,
468 * No of pixel/line to be avg, & Enable the Black clamping
469 */
470 val = ((bclamp->sgain & CCDC_BLK_SGAIN_MASK) |
471 ((bclamp->start_pixel & CCDC_BLK_ST_PXL_MASK) <<
472 CCDC_BLK_ST_PXL_SHIFT) |
473 ((bclamp->sample_ln & CCDC_BLK_SAMPLE_LINE_MASK) <<
474 CCDC_BLK_SAMPLE_LINE_SHIFT) |
475 ((bclamp->sample_pixel & CCDC_BLK_SAMPLE_LN_MASK) <<
476 CCDC_BLK_SAMPLE_LN_SHIFT) | CCDC_BLK_CLAMP_ENABLE);
477 regw(val, CCDC_CLAMP);
478 dev_dbg(ccdc_cfg.dev, "\nWriting 0x%x to CLAMP...\n", val);
479 /* If Black clamping is enable then make dcsub 0 */
480 regw(CCDC_DCSUB_DEFAULT_VAL, CCDC_DCSUB);
481 dev_dbg(ccdc_cfg.dev, "\nWriting 0x00000000 to DCSUB...\n");
482 }
483
ccdc_config_black_compense(struct ccdc_black_compensation * bcomp)484 static void ccdc_config_black_compense(struct ccdc_black_compensation *bcomp)
485 {
486 u32 val;
487
488 val = ((bcomp->b & CCDC_BLK_COMP_MASK) |
489 ((bcomp->gb & CCDC_BLK_COMP_MASK) <<
490 CCDC_BLK_COMP_GB_COMP_SHIFT) |
491 ((bcomp->gr & CCDC_BLK_COMP_MASK) <<
492 CCDC_BLK_COMP_GR_COMP_SHIFT) |
493 ((bcomp->r & CCDC_BLK_COMP_MASK) <<
494 CCDC_BLK_COMP_R_COMP_SHIFT));
495 regw(val, CCDC_BLKCMP);
496 }
497
ccdc_config_fpc(struct ccdc_fault_pixel * fpc)498 static void ccdc_config_fpc(struct ccdc_fault_pixel *fpc)
499 {
500 u32 val;
501
502 /* Initially disable FPC */
503 val = CCDC_FPC_DISABLE;
504 regw(val, CCDC_FPC);
505
506 if (!fpc->enable)
507 return;
508
509 /* Configure Fault pixel if needed */
510 regw(fpc->fpc_table_addr, CCDC_FPC_ADDR);
511 dev_dbg(ccdc_cfg.dev, "\nWriting 0x%x to FPC_ADDR...\n",
512 (fpc->fpc_table_addr));
513 /* Write the FPC params with FPC disable */
514 val = fpc->fp_num & CCDC_FPC_FPC_NUM_MASK;
515 regw(val, CCDC_FPC);
516
517 dev_dbg(ccdc_cfg.dev, "\nWriting 0x%x to FPC...\n", val);
518 /* read the FPC register */
519 val = regr(CCDC_FPC) | CCDC_FPC_ENABLE;
520 regw(val, CCDC_FPC);
521 dev_dbg(ccdc_cfg.dev, "\nWriting 0x%x to FPC...\n", val);
522 }
523
524 /*
525 * ccdc_config_raw()
526 * This function will configure CCDC for Raw capture mode
527 */
ccdc_config_raw(void)528 void ccdc_config_raw(void)
529 {
530 struct ccdc_params_raw *params = &ccdc_cfg.bayer;
531 struct ccdc_config_params_raw *config_params =
532 &ccdc_cfg.bayer.config_params;
533 unsigned int syn_mode = 0;
534 unsigned int val;
535
536 dev_dbg(ccdc_cfg.dev, "\nStarting ccdc_config_raw...");
537
538 /* Reset CCDC */
539 ccdc_restore_defaults();
540
541 /* Disable latching function registers on VSYNC */
542 regw(CCDC_LATCH_ON_VSYNC_DISABLE, CCDC_CCDCFG);
543
544 /*
545 * Configure the vertical sync polarity(SYN_MODE.VDPOL),
546 * horizontal sync polarity (SYN_MODE.HDPOL), frame id polarity
547 * (SYN_MODE.FLDPOL), frame format(progressive or interlace),
548 * data size(SYNMODE.DATSIZ), &pixel format (Input mode), output
549 * SDRAM, enable internal timing generator
550 */
551 syn_mode =
552 (((params->vd_pol & CCDC_VD_POL_MASK) << CCDC_VD_POL_SHIFT) |
553 ((params->hd_pol & CCDC_HD_POL_MASK) << CCDC_HD_POL_SHIFT) |
554 ((params->fid_pol & CCDC_FID_POL_MASK) << CCDC_FID_POL_SHIFT) |
555 ((params->frm_fmt & CCDC_FRM_FMT_MASK) << CCDC_FRM_FMT_SHIFT) |
556 ((config_params->data_sz & CCDC_DATA_SZ_MASK) <<
557 CCDC_DATA_SZ_SHIFT) |
558 ((params->pix_fmt & CCDC_PIX_FMT_MASK) << CCDC_PIX_FMT_SHIFT) |
559 CCDC_WEN_ENABLE | CCDC_VDHDEN_ENABLE);
560
561 /* Enable and configure aLaw register if needed */
562 if (config_params->alaw.enable) {
563 val = ((config_params->alaw.gama_wd &
564 CCDC_ALAW_GAMA_WD_MASK) | CCDC_ALAW_ENABLE);
565 regw(val, CCDC_ALAW);
566 dev_dbg(ccdc_cfg.dev, "\nWriting 0x%x to ALAW...\n", val);
567 }
568
569 /* Configure video window */
570 ccdc_setwin(¶ms->win, params->frm_fmt, CCDC_PPC_RAW);
571
572 /* Configure Black Clamp */
573 ccdc_config_black_clamp(&config_params->blk_clamp);
574
575 /* Configure Black level compensation */
576 ccdc_config_black_compense(&config_params->blk_comp);
577
578 /* Configure Fault Pixel Correction */
579 ccdc_config_fpc(&config_params->fault_pxl);
580
581 /* If data size is 8 bit then pack the data */
582 if ((config_params->data_sz == CCDC_DATA_8BITS) ||
583 config_params->alaw.enable)
584 syn_mode |= CCDC_DATA_PACK_ENABLE;
585
586 #ifdef CONFIG_DM644X_VIDEO_PORT_ENABLE
587 /* enable video port */
588 val = CCDC_ENABLE_VIDEO_PORT;
589 #else
590 /* disable video port */
591 val = CCDC_DISABLE_VIDEO_PORT;
592 #endif
593
594 if (config_params->data_sz == CCDC_DATA_8BITS)
595 val |= (CCDC_DATA_10BITS & CCDC_FMTCFG_VPIN_MASK)
596 << CCDC_FMTCFG_VPIN_SHIFT;
597 else
598 val |= (config_params->data_sz & CCDC_FMTCFG_VPIN_MASK)
599 << CCDC_FMTCFG_VPIN_SHIFT;
600 /* Write value in FMTCFG */
601 regw(val, CCDC_FMTCFG);
602
603 dev_dbg(ccdc_cfg.dev, "\nWriting 0x%x to FMTCFG...\n", val);
604 /* Configure the color pattern according to mt9t001 sensor */
605 regw(CCDC_COLPTN_VAL, CCDC_COLPTN);
606
607 dev_dbg(ccdc_cfg.dev, "\nWriting 0xBB11BB11 to COLPTN...\n");
608 /*
609 * Configure Data formatter(Video port) pixel selection
610 * (FMT_HORZ, FMT_VERT)
611 */
612 val = ((params->win.left & CCDC_FMT_HORZ_FMTSPH_MASK) <<
613 CCDC_FMT_HORZ_FMTSPH_SHIFT) |
614 (params->win.width & CCDC_FMT_HORZ_FMTLNH_MASK);
615 regw(val, CCDC_FMT_HORZ);
616
617 dev_dbg(ccdc_cfg.dev, "\nWriting 0x%x to FMT_HORZ...\n", val);
618 val = (params->win.top & CCDC_FMT_VERT_FMTSLV_MASK)
619 << CCDC_FMT_VERT_FMTSLV_SHIFT;
620 if (params->frm_fmt == CCDC_FRMFMT_PROGRESSIVE)
621 val |= (params->win.height) & CCDC_FMT_VERT_FMTLNV_MASK;
622 else
623 val |= (params->win.height >> 1) & CCDC_FMT_VERT_FMTLNV_MASK;
624
625 dev_dbg(ccdc_cfg.dev, "\nparams->win.height 0x%x ...\n",
626 params->win.height);
627 regw(val, CCDC_FMT_VERT);
628
629 dev_dbg(ccdc_cfg.dev, "\nWriting 0x%x to FMT_VERT...\n", val);
630
631 dev_dbg(ccdc_cfg.dev, "\nbelow regw(val, FMT_VERT)...");
632
633 /*
634 * Configure Horizontal offset register. If pack 8 is enabled then
635 * 1 pixel will take 1 byte
636 */
637 if ((config_params->data_sz == CCDC_DATA_8BITS) ||
638 config_params->alaw.enable)
639 regw((params->win.width + CCDC_32BYTE_ALIGN_VAL) &
640 CCDC_HSIZE_OFF_MASK, CCDC_HSIZE_OFF);
641 else
642 /* else one pixel will take 2 byte */
643 regw(((params->win.width * CCDC_TWO_BYTES_PER_PIXEL) +
644 CCDC_32BYTE_ALIGN_VAL) & CCDC_HSIZE_OFF_MASK,
645 CCDC_HSIZE_OFF);
646
647 /* Set value for SDOFST */
648 if (params->frm_fmt == CCDC_FRMFMT_INTERLACED) {
649 if (params->image_invert_enable) {
650 /* For intelace inverse mode */
651 regw(CCDC_INTERLACED_IMAGE_INVERT, CCDC_SDOFST);
652 dev_dbg(ccdc_cfg.dev, "\nWriting 0x4B6D to SDOFST..\n");
653 }
654
655 else {
656 /* For intelace non inverse mode */
657 regw(CCDC_INTERLACED_NO_IMAGE_INVERT, CCDC_SDOFST);
658 dev_dbg(ccdc_cfg.dev, "\nWriting 0x0249 to SDOFST..\n");
659 }
660 } else if (params->frm_fmt == CCDC_FRMFMT_PROGRESSIVE) {
661 regw(CCDC_PROGRESSIVE_NO_IMAGE_INVERT, CCDC_SDOFST);
662 dev_dbg(ccdc_cfg.dev, "\nWriting 0x0000 to SDOFST...\n");
663 }
664
665 /*
666 * Configure video port pixel selection (VPOUT)
667 * Here -1 is to make the height value less than FMT_VERT.FMTLNV
668 */
669 if (params->frm_fmt == CCDC_FRMFMT_PROGRESSIVE)
670 val = (((params->win.height - 1) & CCDC_VP_OUT_VERT_NUM_MASK))
671 << CCDC_VP_OUT_VERT_NUM_SHIFT;
672 else
673 val =
674 ((((params->win.height >> CCDC_INTERLACED_HEIGHT_SHIFT) -
675 1) & CCDC_VP_OUT_VERT_NUM_MASK)) <<
676 CCDC_VP_OUT_VERT_NUM_SHIFT;
677
678 val |= ((((params->win.width))) & CCDC_VP_OUT_HORZ_NUM_MASK)
679 << CCDC_VP_OUT_HORZ_NUM_SHIFT;
680 val |= (params->win.left) & CCDC_VP_OUT_HORZ_ST_MASK;
681 regw(val, CCDC_VP_OUT);
682
683 dev_dbg(ccdc_cfg.dev, "\nWriting 0x%x to VP_OUT...\n", val);
684 regw(syn_mode, CCDC_SYN_MODE);
685 dev_dbg(ccdc_cfg.dev, "\nWriting 0x%x to SYN_MODE...\n", syn_mode);
686
687 ccdc_sbl_reset();
688 dev_dbg(ccdc_cfg.dev, "\nend of ccdc_config_raw...");
689 ccdc_readregs();
690 }
691
ccdc_configure(void)692 static int ccdc_configure(void)
693 {
694 if (ccdc_cfg.if_type == VPFE_RAW_BAYER)
695 ccdc_config_raw();
696 else
697 ccdc_config_ycbcr();
698 return 0;
699 }
700
ccdc_set_buftype(enum ccdc_buftype buf_type)701 static int ccdc_set_buftype(enum ccdc_buftype buf_type)
702 {
703 if (ccdc_cfg.if_type == VPFE_RAW_BAYER)
704 ccdc_cfg.bayer.buf_type = buf_type;
705 else
706 ccdc_cfg.ycbcr.buf_type = buf_type;
707 return 0;
708 }
709
ccdc_get_buftype(void)710 static enum ccdc_buftype ccdc_get_buftype(void)
711 {
712 if (ccdc_cfg.if_type == VPFE_RAW_BAYER)
713 return ccdc_cfg.bayer.buf_type;
714 return ccdc_cfg.ycbcr.buf_type;
715 }
716
ccdc_enum_pix(u32 * pix,int i)717 static int ccdc_enum_pix(u32 *pix, int i)
718 {
719 int ret = -EINVAL;
720 if (ccdc_cfg.if_type == VPFE_RAW_BAYER) {
721 if (i < ARRAY_SIZE(ccdc_raw_bayer_pix_formats)) {
722 *pix = ccdc_raw_bayer_pix_formats[i];
723 ret = 0;
724 }
725 } else {
726 if (i < ARRAY_SIZE(ccdc_raw_yuv_pix_formats)) {
727 *pix = ccdc_raw_yuv_pix_formats[i];
728 ret = 0;
729 }
730 }
731 return ret;
732 }
733
ccdc_set_pixel_format(u32 pixfmt)734 static int ccdc_set_pixel_format(u32 pixfmt)
735 {
736 if (ccdc_cfg.if_type == VPFE_RAW_BAYER) {
737 ccdc_cfg.bayer.pix_fmt = CCDC_PIXFMT_RAW;
738 if (pixfmt == V4L2_PIX_FMT_SBGGR8)
739 ccdc_cfg.bayer.config_params.alaw.enable = 1;
740 else if (pixfmt != V4L2_PIX_FMT_SBGGR16)
741 return -EINVAL;
742 } else {
743 if (pixfmt == V4L2_PIX_FMT_YUYV)
744 ccdc_cfg.ycbcr.pix_order = CCDC_PIXORDER_YCBYCR;
745 else if (pixfmt == V4L2_PIX_FMT_UYVY)
746 ccdc_cfg.ycbcr.pix_order = CCDC_PIXORDER_CBYCRY;
747 else
748 return -EINVAL;
749 }
750 return 0;
751 }
752
ccdc_get_pixel_format(void)753 static u32 ccdc_get_pixel_format(void)
754 {
755 struct ccdc_a_law *alaw = &ccdc_cfg.bayer.config_params.alaw;
756 u32 pixfmt;
757
758 if (ccdc_cfg.if_type == VPFE_RAW_BAYER)
759 if (alaw->enable)
760 pixfmt = V4L2_PIX_FMT_SBGGR8;
761 else
762 pixfmt = V4L2_PIX_FMT_SBGGR16;
763 else {
764 if (ccdc_cfg.ycbcr.pix_order == CCDC_PIXORDER_YCBYCR)
765 pixfmt = V4L2_PIX_FMT_YUYV;
766 else
767 pixfmt = V4L2_PIX_FMT_UYVY;
768 }
769 return pixfmt;
770 }
771
ccdc_set_image_window(struct v4l2_rect * win)772 static int ccdc_set_image_window(struct v4l2_rect *win)
773 {
774 if (ccdc_cfg.if_type == VPFE_RAW_BAYER)
775 ccdc_cfg.bayer.win = *win;
776 else
777 ccdc_cfg.ycbcr.win = *win;
778 return 0;
779 }
780
ccdc_get_image_window(struct v4l2_rect * win)781 static void ccdc_get_image_window(struct v4l2_rect *win)
782 {
783 if (ccdc_cfg.if_type == VPFE_RAW_BAYER)
784 *win = ccdc_cfg.bayer.win;
785 else
786 *win = ccdc_cfg.ycbcr.win;
787 }
788
ccdc_get_line_length(void)789 static unsigned int ccdc_get_line_length(void)
790 {
791 struct ccdc_config_params_raw *config_params =
792 &ccdc_cfg.bayer.config_params;
793 unsigned int len;
794
795 if (ccdc_cfg.if_type == VPFE_RAW_BAYER) {
796 if ((config_params->alaw.enable) ||
797 (config_params->data_sz == CCDC_DATA_8BITS))
798 len = ccdc_cfg.bayer.win.width;
799 else
800 len = ccdc_cfg.bayer.win.width * 2;
801 } else
802 len = ccdc_cfg.ycbcr.win.width * 2;
803 return ALIGN(len, 32);
804 }
805
ccdc_set_frame_format(enum ccdc_frmfmt frm_fmt)806 static int ccdc_set_frame_format(enum ccdc_frmfmt frm_fmt)
807 {
808 if (ccdc_cfg.if_type == VPFE_RAW_BAYER)
809 ccdc_cfg.bayer.frm_fmt = frm_fmt;
810 else
811 ccdc_cfg.ycbcr.frm_fmt = frm_fmt;
812 return 0;
813 }
814
ccdc_get_frame_format(void)815 static enum ccdc_frmfmt ccdc_get_frame_format(void)
816 {
817 if (ccdc_cfg.if_type == VPFE_RAW_BAYER)
818 return ccdc_cfg.bayer.frm_fmt;
819 else
820 return ccdc_cfg.ycbcr.frm_fmt;
821 }
822
ccdc_getfid(void)823 static int ccdc_getfid(void)
824 {
825 return (regr(CCDC_SYN_MODE) >> 15) & 1;
826 }
827
828 /* misc operations */
ccdc_setfbaddr(unsigned long addr)829 static inline void ccdc_setfbaddr(unsigned long addr)
830 {
831 regw(addr & 0xffffffe0, CCDC_SDR_ADDR);
832 }
833
ccdc_set_hw_if_params(struct vpfe_hw_if_param * params)834 static int ccdc_set_hw_if_params(struct vpfe_hw_if_param *params)
835 {
836 ccdc_cfg.if_type = params->if_type;
837
838 switch (params->if_type) {
839 case VPFE_BT656:
840 case VPFE_YCBCR_SYNC_16:
841 case VPFE_YCBCR_SYNC_8:
842 case VPFE_BT656_10BIT:
843 ccdc_cfg.ycbcr.vd_pol = params->vdpol;
844 ccdc_cfg.ycbcr.hd_pol = params->hdpol;
845 break;
846 default:
847 /* TODO add support for raw bayer here */
848 return -EINVAL;
849 }
850 return 0;
851 }
852
ccdc_save_context(void)853 static void ccdc_save_context(void)
854 {
855 ccdc_ctx[CCDC_PCR >> 2] = regr(CCDC_PCR);
856 ccdc_ctx[CCDC_SYN_MODE >> 2] = regr(CCDC_SYN_MODE);
857 ccdc_ctx[CCDC_HD_VD_WID >> 2] = regr(CCDC_HD_VD_WID);
858 ccdc_ctx[CCDC_PIX_LINES >> 2] = regr(CCDC_PIX_LINES);
859 ccdc_ctx[CCDC_HORZ_INFO >> 2] = regr(CCDC_HORZ_INFO);
860 ccdc_ctx[CCDC_VERT_START >> 2] = regr(CCDC_VERT_START);
861 ccdc_ctx[CCDC_VERT_LINES >> 2] = regr(CCDC_VERT_LINES);
862 ccdc_ctx[CCDC_CULLING >> 2] = regr(CCDC_CULLING);
863 ccdc_ctx[CCDC_HSIZE_OFF >> 2] = regr(CCDC_HSIZE_OFF);
864 ccdc_ctx[CCDC_SDOFST >> 2] = regr(CCDC_SDOFST);
865 ccdc_ctx[CCDC_SDR_ADDR >> 2] = regr(CCDC_SDR_ADDR);
866 ccdc_ctx[CCDC_CLAMP >> 2] = regr(CCDC_CLAMP);
867 ccdc_ctx[CCDC_DCSUB >> 2] = regr(CCDC_DCSUB);
868 ccdc_ctx[CCDC_COLPTN >> 2] = regr(CCDC_COLPTN);
869 ccdc_ctx[CCDC_BLKCMP >> 2] = regr(CCDC_BLKCMP);
870 ccdc_ctx[CCDC_FPC >> 2] = regr(CCDC_FPC);
871 ccdc_ctx[CCDC_FPC_ADDR >> 2] = regr(CCDC_FPC_ADDR);
872 ccdc_ctx[CCDC_VDINT >> 2] = regr(CCDC_VDINT);
873 ccdc_ctx[CCDC_ALAW >> 2] = regr(CCDC_ALAW);
874 ccdc_ctx[CCDC_REC656IF >> 2] = regr(CCDC_REC656IF);
875 ccdc_ctx[CCDC_CCDCFG >> 2] = regr(CCDC_CCDCFG);
876 ccdc_ctx[CCDC_FMTCFG >> 2] = regr(CCDC_FMTCFG);
877 ccdc_ctx[CCDC_FMT_HORZ >> 2] = regr(CCDC_FMT_HORZ);
878 ccdc_ctx[CCDC_FMT_VERT >> 2] = regr(CCDC_FMT_VERT);
879 ccdc_ctx[CCDC_FMT_ADDR0 >> 2] = regr(CCDC_FMT_ADDR0);
880 ccdc_ctx[CCDC_FMT_ADDR1 >> 2] = regr(CCDC_FMT_ADDR1);
881 ccdc_ctx[CCDC_FMT_ADDR2 >> 2] = regr(CCDC_FMT_ADDR2);
882 ccdc_ctx[CCDC_FMT_ADDR3 >> 2] = regr(CCDC_FMT_ADDR3);
883 ccdc_ctx[CCDC_FMT_ADDR4 >> 2] = regr(CCDC_FMT_ADDR4);
884 ccdc_ctx[CCDC_FMT_ADDR5 >> 2] = regr(CCDC_FMT_ADDR5);
885 ccdc_ctx[CCDC_FMT_ADDR6 >> 2] = regr(CCDC_FMT_ADDR6);
886 ccdc_ctx[CCDC_FMT_ADDR7 >> 2] = regr(CCDC_FMT_ADDR7);
887 ccdc_ctx[CCDC_PRGEVEN_0 >> 2] = regr(CCDC_PRGEVEN_0);
888 ccdc_ctx[CCDC_PRGEVEN_1 >> 2] = regr(CCDC_PRGEVEN_1);
889 ccdc_ctx[CCDC_PRGODD_0 >> 2] = regr(CCDC_PRGODD_0);
890 ccdc_ctx[CCDC_PRGODD_1 >> 2] = regr(CCDC_PRGODD_1);
891 ccdc_ctx[CCDC_VP_OUT >> 2] = regr(CCDC_VP_OUT);
892 }
893
ccdc_restore_context(void)894 static void ccdc_restore_context(void)
895 {
896 regw(ccdc_ctx[CCDC_SYN_MODE >> 2], CCDC_SYN_MODE);
897 regw(ccdc_ctx[CCDC_HD_VD_WID >> 2], CCDC_HD_VD_WID);
898 regw(ccdc_ctx[CCDC_PIX_LINES >> 2], CCDC_PIX_LINES);
899 regw(ccdc_ctx[CCDC_HORZ_INFO >> 2], CCDC_HORZ_INFO);
900 regw(ccdc_ctx[CCDC_VERT_START >> 2], CCDC_VERT_START);
901 regw(ccdc_ctx[CCDC_VERT_LINES >> 2], CCDC_VERT_LINES);
902 regw(ccdc_ctx[CCDC_CULLING >> 2], CCDC_CULLING);
903 regw(ccdc_ctx[CCDC_HSIZE_OFF >> 2], CCDC_HSIZE_OFF);
904 regw(ccdc_ctx[CCDC_SDOFST >> 2], CCDC_SDOFST);
905 regw(ccdc_ctx[CCDC_SDR_ADDR >> 2], CCDC_SDR_ADDR);
906 regw(ccdc_ctx[CCDC_CLAMP >> 2], CCDC_CLAMP);
907 regw(ccdc_ctx[CCDC_DCSUB >> 2], CCDC_DCSUB);
908 regw(ccdc_ctx[CCDC_COLPTN >> 2], CCDC_COLPTN);
909 regw(ccdc_ctx[CCDC_BLKCMP >> 2], CCDC_BLKCMP);
910 regw(ccdc_ctx[CCDC_FPC >> 2], CCDC_FPC);
911 regw(ccdc_ctx[CCDC_FPC_ADDR >> 2], CCDC_FPC_ADDR);
912 regw(ccdc_ctx[CCDC_VDINT >> 2], CCDC_VDINT);
913 regw(ccdc_ctx[CCDC_ALAW >> 2], CCDC_ALAW);
914 regw(ccdc_ctx[CCDC_REC656IF >> 2], CCDC_REC656IF);
915 regw(ccdc_ctx[CCDC_CCDCFG >> 2], CCDC_CCDCFG);
916 regw(ccdc_ctx[CCDC_FMTCFG >> 2], CCDC_FMTCFG);
917 regw(ccdc_ctx[CCDC_FMT_HORZ >> 2], CCDC_FMT_HORZ);
918 regw(ccdc_ctx[CCDC_FMT_VERT >> 2], CCDC_FMT_VERT);
919 regw(ccdc_ctx[CCDC_FMT_ADDR0 >> 2], CCDC_FMT_ADDR0);
920 regw(ccdc_ctx[CCDC_FMT_ADDR1 >> 2], CCDC_FMT_ADDR1);
921 regw(ccdc_ctx[CCDC_FMT_ADDR2 >> 2], CCDC_FMT_ADDR2);
922 regw(ccdc_ctx[CCDC_FMT_ADDR3 >> 2], CCDC_FMT_ADDR3);
923 regw(ccdc_ctx[CCDC_FMT_ADDR4 >> 2], CCDC_FMT_ADDR4);
924 regw(ccdc_ctx[CCDC_FMT_ADDR5 >> 2], CCDC_FMT_ADDR5);
925 regw(ccdc_ctx[CCDC_FMT_ADDR6 >> 2], CCDC_FMT_ADDR6);
926 regw(ccdc_ctx[CCDC_FMT_ADDR7 >> 2], CCDC_FMT_ADDR7);
927 regw(ccdc_ctx[CCDC_PRGEVEN_0 >> 2], CCDC_PRGEVEN_0);
928 regw(ccdc_ctx[CCDC_PRGEVEN_1 >> 2], CCDC_PRGEVEN_1);
929 regw(ccdc_ctx[CCDC_PRGODD_0 >> 2], CCDC_PRGODD_0);
930 regw(ccdc_ctx[CCDC_PRGODD_1 >> 2], CCDC_PRGODD_1);
931 regw(ccdc_ctx[CCDC_VP_OUT >> 2], CCDC_VP_OUT);
932 regw(ccdc_ctx[CCDC_PCR >> 2], CCDC_PCR);
933 }
934 static struct ccdc_hw_device ccdc_hw_dev = {
935 .name = "DM6446 CCDC",
936 .owner = THIS_MODULE,
937 .hw_ops = {
938 .open = ccdc_open,
939 .close = ccdc_close,
940 .reset = ccdc_sbl_reset,
941 .enable = ccdc_enable,
942 .set_hw_if_params = ccdc_set_hw_if_params,
943 .set_params = ccdc_set_params,
944 .configure = ccdc_configure,
945 .set_buftype = ccdc_set_buftype,
946 .get_buftype = ccdc_get_buftype,
947 .enum_pix = ccdc_enum_pix,
948 .set_pixel_format = ccdc_set_pixel_format,
949 .get_pixel_format = ccdc_get_pixel_format,
950 .set_frame_format = ccdc_set_frame_format,
951 .get_frame_format = ccdc_get_frame_format,
952 .set_image_window = ccdc_set_image_window,
953 .get_image_window = ccdc_get_image_window,
954 .get_line_length = ccdc_get_line_length,
955 .setfbaddr = ccdc_setfbaddr,
956 .getfid = ccdc_getfid,
957 },
958 };
959
dm644x_ccdc_probe(struct platform_device * pdev)960 static int __init dm644x_ccdc_probe(struct platform_device *pdev)
961 {
962 struct resource *res;
963 int status = 0;
964
965 /*
966 * first try to register with vpfe. If not correct platform, then we
967 * don't have to iomap
968 */
969 status = vpfe_register_ccdc_device(&ccdc_hw_dev);
970 if (status < 0)
971 return status;
972
973 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
974 if (!res) {
975 status = -ENODEV;
976 goto fail_nores;
977 }
978
979 res = request_mem_region(res->start, resource_size(res), res->name);
980 if (!res) {
981 status = -EBUSY;
982 goto fail_nores;
983 }
984
985 ccdc_cfg.base_addr = ioremap_nocache(res->start, resource_size(res));
986 if (!ccdc_cfg.base_addr) {
987 status = -ENOMEM;
988 goto fail_nomem;
989 }
990
991 /* Get and enable Master clock */
992 ccdc_cfg.mclk = clk_get(&pdev->dev, "master");
993 if (IS_ERR(ccdc_cfg.mclk)) {
994 status = PTR_ERR(ccdc_cfg.mclk);
995 goto fail_nomap;
996 }
997 if (clk_enable(ccdc_cfg.mclk)) {
998 status = -ENODEV;
999 goto fail_mclk;
1000 }
1001
1002 /* Get and enable Slave clock */
1003 ccdc_cfg.sclk = clk_get(&pdev->dev, "slave");
1004 if (IS_ERR(ccdc_cfg.sclk)) {
1005 status = PTR_ERR(ccdc_cfg.sclk);
1006 goto fail_mclk;
1007 }
1008 if (clk_enable(ccdc_cfg.sclk)) {
1009 status = -ENODEV;
1010 goto fail_sclk;
1011 }
1012 ccdc_cfg.dev = &pdev->dev;
1013 printk(KERN_NOTICE "%s is registered with vpfe.\n", ccdc_hw_dev.name);
1014 return 0;
1015 fail_sclk:
1016 clk_put(ccdc_cfg.sclk);
1017 fail_mclk:
1018 clk_put(ccdc_cfg.mclk);
1019 fail_nomap:
1020 iounmap(ccdc_cfg.base_addr);
1021 fail_nomem:
1022 release_mem_region(res->start, resource_size(res));
1023 fail_nores:
1024 vpfe_unregister_ccdc_device(&ccdc_hw_dev);
1025 return status;
1026 }
1027
dm644x_ccdc_remove(struct platform_device * pdev)1028 static int dm644x_ccdc_remove(struct platform_device *pdev)
1029 {
1030 struct resource *res;
1031
1032 clk_put(ccdc_cfg.mclk);
1033 clk_put(ccdc_cfg.sclk);
1034 iounmap(ccdc_cfg.base_addr);
1035 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
1036 if (res)
1037 release_mem_region(res->start, resource_size(res));
1038 vpfe_unregister_ccdc_device(&ccdc_hw_dev);
1039 return 0;
1040 }
1041
dm644x_ccdc_suspend(struct device * dev)1042 static int dm644x_ccdc_suspend(struct device *dev)
1043 {
1044 /* Save CCDC context */
1045 ccdc_save_context();
1046 /* Disable CCDC */
1047 ccdc_enable(0);
1048 /* Disable both master and slave clock */
1049 clk_disable(ccdc_cfg.mclk);
1050 clk_disable(ccdc_cfg.sclk);
1051
1052 return 0;
1053 }
1054
dm644x_ccdc_resume(struct device * dev)1055 static int dm644x_ccdc_resume(struct device *dev)
1056 {
1057 /* Enable both master and slave clock */
1058 clk_enable(ccdc_cfg.mclk);
1059 clk_enable(ccdc_cfg.sclk);
1060 /* Restore CCDC context */
1061 ccdc_restore_context();
1062
1063 return 0;
1064 }
1065
1066 static const struct dev_pm_ops dm644x_ccdc_pm_ops = {
1067 .suspend = dm644x_ccdc_suspend,
1068 .resume = dm644x_ccdc_resume,
1069 };
1070
1071 static struct platform_driver dm644x_ccdc_driver = {
1072 .driver = {
1073 .name = "dm644x_ccdc",
1074 .owner = THIS_MODULE,
1075 .pm = &dm644x_ccdc_pm_ops,
1076 },
1077 .remove = __devexit_p(dm644x_ccdc_remove),
1078 .probe = dm644x_ccdc_probe,
1079 };
1080
1081 module_platform_driver(dm644x_ccdc_driver);
1082