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[media] omap3isp: resizer: Improved resizer rsz factor formula
[deliverable/linux.git] / drivers / media / video / omap3isp / ispccdc.c
CommitLineData
de1135d4
LP		 1/*
2 * ispccdc.c
3 *
4 * TI OMAP3 ISP - CCDC module
5 *
6 * Copyright (C) 2009-2010 Nokia Corporation
7 * Copyright (C) 2009 Texas Instruments, Inc.
8 *
9 * Contacts: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
10 * Sakari Ailus <sakari.ailus@iki.fi>
11 *
12 * This program is free software; you can redistribute it and/or modify
13 * it under the terms of the GNU General Public License version 2 as
14 * published by the Free Software Foundation.
15 *
16 * This program is distributed in the hope that it will be useful, but
17 * WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
19 * General Public License for more details.
20 *
21 * You should have received a copy of the GNU General Public License
22 * along with this program; if not, write to the Free Software
23 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
24 * 02110-1301 USA
25 */
26
27#include <linux/module.h>
28#include <linux/uaccess.h>
29#include <linux/delay.h>
30#include <linux/device.h>
31#include <linux/dma-mapping.h>
32#include <linux/mm.h>
33#include <linux/sched.h>
34#include <media/v4l2-event.h>
35
36#include "isp.h"
37#include "ispreg.h"
38#include "ispccdc.h"
39
40static struct v4l2_mbus_framefmt *
41__ccdc_get_format(struct isp_ccdc_device *ccdc, struct v4l2_subdev_fh *fh,
42 unsigned int pad, enum v4l2_subdev_format_whence which);
43
44static const unsigned int ccdc_fmts[] = {
45 V4L2_MBUS_FMT_Y8_1X8,
46 V4L2_MBUS_FMT_SGRBG10_1X10,
47 V4L2_MBUS_FMT_SRGGB10_1X10,
48 V4L2_MBUS_FMT_SBGGR10_1X10,
49 V4L2_MBUS_FMT_SGBRG10_1X10,
50 V4L2_MBUS_FMT_SGRBG12_1X12,
51 V4L2_MBUS_FMT_SRGGB12_1X12,
52 V4L2_MBUS_FMT_SBGGR12_1X12,
53 V4L2_MBUS_FMT_SGBRG12_1X12,
54};
55
56/*
57 * ccdc_print_status - Print current CCDC Module register values.
58 * @ccdc: Pointer to ISP CCDC device.
59 *
60 * Also prints other debug information stored in the CCDC module.
61 */
62#define CCDC_PRINT_REGISTER(isp, name)\
63 dev_dbg(isp->dev, "###CCDC " #name "=0x%08x\n", \
64 isp_reg_readl(isp, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_##name))
65
66static void ccdc_print_status(struct isp_ccdc_device *ccdc)
67{
68 struct isp_device *isp = to_isp_device(ccdc);
69
70 dev_dbg(isp->dev, "-------------CCDC Register dump-------------\n");
71
72 CCDC_PRINT_REGISTER(isp, PCR);
73 CCDC_PRINT_REGISTER(isp, SYN_MODE);
74 CCDC_PRINT_REGISTER(isp, HD_VD_WID);
75 CCDC_PRINT_REGISTER(isp, PIX_LINES);
76 CCDC_PRINT_REGISTER(isp, HORZ_INFO);
77 CCDC_PRINT_REGISTER(isp, VERT_START);
78 CCDC_PRINT_REGISTER(isp, VERT_LINES);
79 CCDC_PRINT_REGISTER(isp, CULLING);
80 CCDC_PRINT_REGISTER(isp, HSIZE_OFF);
81 CCDC_PRINT_REGISTER(isp, SDOFST);
82 CCDC_PRINT_REGISTER(isp, SDR_ADDR);
83 CCDC_PRINT_REGISTER(isp, CLAMP);
84 CCDC_PRINT_REGISTER(isp, DCSUB);
85 CCDC_PRINT_REGISTER(isp, COLPTN);
86 CCDC_PRINT_REGISTER(isp, BLKCMP);
87 CCDC_PRINT_REGISTER(isp, FPC);
88 CCDC_PRINT_REGISTER(isp, FPC_ADDR);
89 CCDC_PRINT_REGISTER(isp, VDINT);
90 CCDC_PRINT_REGISTER(isp, ALAW);
91 CCDC_PRINT_REGISTER(isp, REC656IF);
92 CCDC_PRINT_REGISTER(isp, CFG);
93 CCDC_PRINT_REGISTER(isp, FMTCFG);
94 CCDC_PRINT_REGISTER(isp, FMT_HORZ);
95 CCDC_PRINT_REGISTER(isp, FMT_VERT);
96 CCDC_PRINT_REGISTER(isp, PRGEVEN0);
97 CCDC_PRINT_REGISTER(isp, PRGEVEN1);
98 CCDC_PRINT_REGISTER(isp, PRGODD0);
99 CCDC_PRINT_REGISTER(isp, PRGODD1);
100 CCDC_PRINT_REGISTER(isp, VP_OUT);
101 CCDC_PRINT_REGISTER(isp, LSC_CONFIG);
102 CCDC_PRINT_REGISTER(isp, LSC_INITIAL);
103 CCDC_PRINT_REGISTER(isp, LSC_TABLE_BASE);
104 CCDC_PRINT_REGISTER(isp, LSC_TABLE_OFFSET);
105
106 dev_dbg(isp->dev, "--------------------------------------------\n");
107}
108
109/*
110 * omap3isp_ccdc_busy - Get busy state of the CCDC.
111 * @ccdc: Pointer to ISP CCDC device.
112 */
113int omap3isp_ccdc_busy(struct isp_ccdc_device *ccdc)
114{
115 struct isp_device *isp = to_isp_device(ccdc);
116
117 return isp_reg_readl(isp, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_PCR) &
118 ISPCCDC_PCR_BUSY;
119}
120
121/* -----------------------------------------------------------------------------
122 * Lens Shading Compensation
123 */
124
125/*
126 * ccdc_lsc_validate_config - Check that LSC configuration is valid.
127 * @ccdc: Pointer to ISP CCDC device.
128 * @lsc_cfg: the LSC configuration to check.
129 *
130 * Returns 0 if the LSC configuration is valid, or -EINVAL if invalid.
131 */
132static int ccdc_lsc_validate_config(struct isp_ccdc_device *ccdc,
133 struct omap3isp_ccdc_lsc_config *lsc_cfg)
134{
135 struct isp_device *isp = to_isp_device(ccdc);
136 struct v4l2_mbus_framefmt *format;
137 unsigned int paxel_width, paxel_height;
138 unsigned int paxel_shift_x, paxel_shift_y;
139 unsigned int min_width, min_height, min_size;
140 unsigned int input_width, input_height;
141
142 paxel_shift_x = lsc_cfg->gain_mode_m;
143 paxel_shift_y = lsc_cfg->gain_mode_n;
144
145 if ((paxel_shift_x < 2) || (paxel_shift_x > 6) ||
146 (paxel_shift_y < 2) || (paxel_shift_y > 6)) {
147 dev_dbg(isp->dev, "CCDC: LSC: Invalid paxel size\n");
148 return -EINVAL;
149 }
150
151 if (lsc_cfg->offset & 3) {
152 dev_dbg(isp->dev, "CCDC: LSC: Offset must be a multiple of "
153 "4\n");
154 return -EINVAL;
155 }
156
157 if ((lsc_cfg->initial_x & 1) || (lsc_cfg->initial_y & 1)) {
158 dev_dbg(isp->dev, "CCDC: LSC: initial_x and y must be even\n");
159 return -EINVAL;
160 }
161
162 format = __ccdc_get_format(ccdc, NULL, CCDC_PAD_SINK,
163 V4L2_SUBDEV_FORMAT_ACTIVE);
164 input_width = format->width;
165 input_height = format->height;
166
167 /* Calculate minimum bytesize for validation */
168 paxel_width = 1 << paxel_shift_x;
169 min_width = ((input_width + lsc_cfg->initial_x + paxel_width - 1)
170 >> paxel_shift_x) + 1;
171
172 paxel_height = 1 << paxel_shift_y;
173 min_height = ((input_height + lsc_cfg->initial_y + paxel_height - 1)
174 >> paxel_shift_y) + 1;
175
176 min_size = 4 * min_width * min_height;
177 if (min_size > lsc_cfg->size) {
178 dev_dbg(isp->dev, "CCDC: LSC: too small table\n");
179 return -EINVAL;
180 }
181 if (lsc_cfg->offset < (min_width * 4)) {
182 dev_dbg(isp->dev, "CCDC: LSC: Offset is too small\n");
183 return -EINVAL;
184 }
185 if ((lsc_cfg->size / lsc_cfg->offset) < min_height) {
186 dev_dbg(isp->dev, "CCDC: LSC: Wrong size/offset combination\n");
187 return -EINVAL;
188 }
189 return 0;
190}
191
192/*
193 * ccdc_lsc_program_table - Program Lens Shading Compensation table address.
194 * @ccdc: Pointer to ISP CCDC device.
195 */
196static void ccdc_lsc_program_table(struct isp_ccdc_device *ccdc, u32 addr)
197{
198 isp_reg_writel(to_isp_device(ccdc), addr,
199 OMAP3_ISP_IOMEM_CCDC, ISPCCDC_LSC_TABLE_BASE);
200}
201
202/*
203 * ccdc_lsc_setup_regs - Configures the lens shading compensation module
204 * @ccdc: Pointer to ISP CCDC device.
205 */
206static void ccdc_lsc_setup_regs(struct isp_ccdc_device *ccdc,
207 struct omap3isp_ccdc_lsc_config *cfg)
208{
209 struct isp_device *isp = to_isp_device(ccdc);
210 int reg;
211
212 isp_reg_writel(isp, cfg->offset, OMAP3_ISP_IOMEM_CCDC,
213 ISPCCDC_LSC_TABLE_OFFSET);
214
215 reg = 0;
216 reg |= cfg->gain_mode_n << ISPCCDC_LSC_GAIN_MODE_N_SHIFT;
217 reg |= cfg->gain_mode_m << ISPCCDC_LSC_GAIN_MODE_M_SHIFT;
218 reg |= cfg->gain_format << ISPCCDC_LSC_GAIN_FORMAT_SHIFT;
219 isp_reg_writel(isp, reg, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_LSC_CONFIG);
220
221 reg = 0;
222 reg &= ~ISPCCDC_LSC_INITIAL_X_MASK;
223 reg |= cfg->initial_x << ISPCCDC_LSC_INITIAL_X_SHIFT;
224 reg &= ~ISPCCDC_LSC_INITIAL_Y_MASK;
225 reg |= cfg->initial_y << ISPCCDC_LSC_INITIAL_Y_SHIFT;
226 isp_reg_writel(isp, reg, OMAP3_ISP_IOMEM_CCDC,
227 ISPCCDC_LSC_INITIAL);
228}
229
230static int ccdc_lsc_wait_prefetch(struct isp_ccdc_device *ccdc)
231{
232 struct isp_device *isp = to_isp_device(ccdc);
233 unsigned int wait;
234
235 isp_reg_writel(isp, IRQ0STATUS_CCDC_LSC_PREF_COMP_IRQ,
236 OMAP3_ISP_IOMEM_MAIN, ISP_IRQ0STATUS);
237
238 /* timeout 1 ms */
239 for (wait = 0; wait < 1000; wait++) {
240 if (isp_reg_readl(isp, OMAP3_ISP_IOMEM_MAIN, ISP_IRQ0STATUS) &
241 IRQ0STATUS_CCDC_LSC_PREF_COMP_IRQ) {
242 isp_reg_writel(isp, IRQ0STATUS_CCDC_LSC_PREF_COMP_IRQ,
243 OMAP3_ISP_IOMEM_MAIN, ISP_IRQ0STATUS);
244 return 0;
245 }
246
247 rmb();
248 udelay(1);
249 }
250
251 return -ETIMEDOUT;
252}
253
254/*
255 * __ccdc_lsc_enable - Enables/Disables the Lens Shading Compensation module.
256 * @ccdc: Pointer to ISP CCDC device.
257 * @enable: 0 Disables LSC, 1 Enables LSC.
258 */
259static int __ccdc_lsc_enable(struct isp_ccdc_device *ccdc, int enable)
260{
261 struct isp_device *isp = to_isp_device(ccdc);
262 const struct v4l2_mbus_framefmt *format =
263 __ccdc_get_format(ccdc, NULL, CCDC_PAD_SINK,
264 V4L2_SUBDEV_FORMAT_ACTIVE);
265
266 if ((format->code != V4L2_MBUS_FMT_SGRBG10_1X10) &&
267 (format->code != V4L2_MBUS_FMT_SRGGB10_1X10) &&
268 (format->code != V4L2_MBUS_FMT_SBGGR10_1X10) &&
269 (format->code != V4L2_MBUS_FMT_SGBRG10_1X10))
270 return -EINVAL;
271
272 if (enable)
273 omap3isp_sbl_enable(isp, OMAP3_ISP_SBL_CCDC_LSC_READ);
274
275 isp_reg_clr_set(isp, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_LSC_CONFIG,
276 ISPCCDC_LSC_ENABLE, enable ? ISPCCDC_LSC_ENABLE : 0);
277
278 if (enable) {
279 if (ccdc_lsc_wait_prefetch(ccdc) < 0) {
280 isp_reg_clr(isp, OMAP3_ISP_IOMEM_CCDC,
281 ISPCCDC_LSC_CONFIG, ISPCCDC_LSC_ENABLE);
282 ccdc->lsc.state = LSC_STATE_STOPPED;
283 dev_warn(to_device(ccdc), "LSC prefecth timeout\n");
284 return -ETIMEDOUT;
285 }
286 ccdc->lsc.state = LSC_STATE_RUNNING;
287 } else {
288 ccdc->lsc.state = LSC_STATE_STOPPING;
289 }
290
291 return 0;
292}
293
294static int ccdc_lsc_busy(struct isp_ccdc_device *ccdc)
295{
296 struct isp_device *isp = to_isp_device(ccdc);
297
298 return isp_reg_readl(isp, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_LSC_CONFIG) &
299 ISPCCDC_LSC_BUSY;
300}
301
302/* __ccdc_lsc_configure - Apply a new configuration to the LSC engine
303 * @ccdc: Pointer to ISP CCDC device
304 * @req: New configuration request
305 *
306 * context: in_interrupt()
307 */
308static int __ccdc_lsc_configure(struct isp_ccdc_device *ccdc,
309 struct ispccdc_lsc_config_req *req)
310{
311 if (!req->enable)
312 return -EINVAL;
313
314 if (ccdc_lsc_validate_config(ccdc, &req->config) < 0) {
315 dev_dbg(to_device(ccdc), "Discard LSC configuration\n");
316 return -EINVAL;
317 }
318
319 if (ccdc_lsc_busy(ccdc))
320 return -EBUSY;
321
322 ccdc_lsc_setup_regs(ccdc, &req->config);
323 ccdc_lsc_program_table(ccdc, req->table);
324 return 0;
325}
326
327/*
328 * ccdc_lsc_error_handler - Handle LSC prefetch error scenario.
329 * @ccdc: Pointer to ISP CCDC device.
330 *
331 * Disables LSC, and defers enablement to shadow registers update time.
332 */
333static void ccdc_lsc_error_handler(struct isp_ccdc_device *ccdc)
334{
335 struct isp_device *isp = to_isp_device(ccdc);
336 /*
337 * From OMAP3 TRM: When this event is pending, the module
338 * goes into transparent mode (output =input). Normal
339 * operation can be resumed at the start of the next frame
340 * after:
341 * 1) Clearing this event
342 * 2) Disabling the LSC module
343 * 3) Enabling it
344 */
345 isp_reg_clr(isp, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_LSC_CONFIG,
346 ISPCCDC_LSC_ENABLE);
347 ccdc->lsc.state = LSC_STATE_STOPPED;
348}
349
350static void ccdc_lsc_free_request(struct isp_ccdc_device *ccdc,
351 struct ispccdc_lsc_config_req *req)
352{
353 struct isp_device *isp = to_isp_device(ccdc);
354
355 if (req == NULL)
356 return;
357
358 if (req->iovm)
359 dma_unmap_sg(isp->dev, req->iovm->sgt->sgl,
360 req->iovm->sgt->nents, DMA_TO_DEVICE);
361 if (req->table)
362 iommu_vfree(isp->iommu, req->table);
363 kfree(req);
364}
365
366static void ccdc_lsc_free_queue(struct isp_ccdc_device *ccdc,
367 struct list_head *queue)
368{
369 struct ispccdc_lsc_config_req *req, *n;
370 unsigned long flags;
371
372 spin_lock_irqsave(&ccdc->lsc.req_lock, flags);
373 list_for_each_entry_safe(req, n, queue, list) {
374 list_del(&req->list);
375 spin_unlock_irqrestore(&ccdc->lsc.req_lock, flags);
376 ccdc_lsc_free_request(ccdc, req);
377 spin_lock_irqsave(&ccdc->lsc.req_lock, flags);
378 }
379 spin_unlock_irqrestore(&ccdc->lsc.req_lock, flags);
380}
381
382static void ccdc_lsc_free_table_work(struct work_struct *work)
383{
384 struct isp_ccdc_device *ccdc;
385 struct ispccdc_lsc *lsc;
386
387 lsc = container_of(work, struct ispccdc_lsc, table_work);
388 ccdc = container_of(lsc, struct isp_ccdc_device, lsc);
389
390 ccdc_lsc_free_queue(ccdc, &lsc->free_queue);
391}
392
393/*
394 * ccdc_lsc_config - Configure the LSC module from a userspace request
395 *
396 * Store the request LSC configuration in the LSC engine request pointer. The
397 * configuration will be applied to the hardware when the CCDC will be enabled,
398 * or at the next LSC interrupt if the CCDC is already running.
399 */
400static int ccdc_lsc_config(struct isp_ccdc_device *ccdc,
401 struct omap3isp_ccdc_update_config *config)
402{
403 struct isp_device *isp = to_isp_device(ccdc);
404 struct ispccdc_lsc_config_req *req;
405 unsigned long flags;
406 void *table;
407 u16 update;
408 int ret;
409
410 update = config->update &
411 (OMAP3ISP_CCDC_CONFIG_LSC | OMAP3ISP_CCDC_TBL_LSC);
412 if (!update)
413 return 0;
414
415 if (update != (OMAP3ISP_CCDC_CONFIG_LSC | OMAP3ISP_CCDC_TBL_LSC)) {
416 dev_dbg(to_device(ccdc), "%s: Both LSC configuration and table "
417 "need to be supplied\n", __func__);
418 return -EINVAL;
419 }
420
421 req = kzalloc(sizeof(*req), GFP_KERNEL);
422 if (req == NULL)
423 return -ENOMEM;
424
425 if (config->flag & OMAP3ISP_CCDC_CONFIG_LSC) {
426 if (copy_from_user(&req->config, config->lsc_cfg,
427 sizeof(req->config))) {
428 ret = -EFAULT;
429 goto done;
430 }
431
432 req->enable = 1;
433
434 req->table = iommu_vmalloc(isp->iommu, 0, req->config.size,
435 IOMMU_FLAG);
436 if (IS_ERR_VALUE(req->table)) {
437 req->table = 0;
438 ret = -ENOMEM;
439 goto done;
440 }
441
442 req->iovm = find_iovm_area(isp->iommu, req->table);
443 if (req->iovm == NULL) {
444 ret = -ENOMEM;
445 goto done;
446 }
447
448 if (!dma_map_sg(isp->dev, req->iovm->sgt->sgl,
449 req->iovm->sgt->nents, DMA_TO_DEVICE)) {
450 ret = -ENOMEM;
451 req->iovm = NULL;
452 goto done;
453 }
454
455 dma_sync_sg_for_cpu(isp->dev, req->iovm->sgt->sgl,
456 req->iovm->sgt->nents, DMA_TO_DEVICE);
457
458 table = da_to_va(isp->iommu, req->table);
459 if (copy_from_user(table, config->lsc, req->config.size)) {
460 ret = -EFAULT;
461 goto done;
462 }
463
464 dma_sync_sg_for_device(isp->dev, req->iovm->sgt->sgl,
465 req->iovm->sgt->nents, DMA_TO_DEVICE);
466 }
467
468 spin_lock_irqsave(&ccdc->lsc.req_lock, flags);
469 if (ccdc->lsc.request) {
470 list_add_tail(&ccdc->lsc.request->list, &ccdc->lsc.free_queue);
471 schedule_work(&ccdc->lsc.table_work);
472 }
473 ccdc->lsc.request = req;
474 spin_unlock_irqrestore(&ccdc->lsc.req_lock, flags);
475
476 ret = 0;
477
478done:
479 if (ret < 0)
480 ccdc_lsc_free_request(ccdc, req);
481
482 return ret;
483}
484
485static inline int ccdc_lsc_is_configured(struct isp_ccdc_device *ccdc)
486{
487 unsigned long flags;
488
489 spin_lock_irqsave(&ccdc->lsc.req_lock, flags);
490 if (ccdc->lsc.active) {
491 spin_unlock_irqrestore(&ccdc->lsc.req_lock, flags);
492 return 1;
493 }
494 spin_unlock_irqrestore(&ccdc->lsc.req_lock, flags);
495 return 0;
496}
497
498static int ccdc_lsc_enable(struct isp_ccdc_device *ccdc)
499{
500 struct ispccdc_lsc *lsc = &ccdc->lsc;
501
502 if (lsc->state != LSC_STATE_STOPPED)
503 return -EINVAL;
504
505 if (lsc->active) {
506 list_add_tail(&lsc->active->list, &lsc->free_queue);
507 lsc->active = NULL;
508 }
509
510 if (__ccdc_lsc_configure(ccdc, lsc->request) < 0) {
511 omap3isp_sbl_disable(to_isp_device(ccdc),
512 OMAP3_ISP_SBL_CCDC_LSC_READ);
513 list_add_tail(&lsc->request->list, &lsc->free_queue);
514 lsc->request = NULL;
515 goto done;
516 }
517
518 lsc->active = lsc->request;
519 lsc->request = NULL;
520 __ccdc_lsc_enable(ccdc, 1);
521
522done:
523 if (!list_empty(&lsc->free_queue))
524 schedule_work(&lsc->table_work);
525
526 return 0;
527}
528
529/* -----------------------------------------------------------------------------
530 * Parameters configuration
531 */
532
533/*
534 * ccdc_configure_clamp - Configure optical-black or digital clamping
535 * @ccdc: Pointer to ISP CCDC device.
536 *
537 * The CCDC performs either optical-black or digital clamp. Configure and enable
538 * the selected clamp method.
539 */
540static void ccdc_configure_clamp(struct isp_ccdc_device *ccdc)
541{
542 struct isp_device *isp = to_isp_device(ccdc);
543 u32 clamp;
544
545 if (ccdc->obclamp) {
546 clamp = ccdc->clamp.obgain << ISPCCDC_CLAMP_OBGAIN_SHIFT;
547 clamp |= ccdc->clamp.oblen << ISPCCDC_CLAMP_OBSLEN_SHIFT;
548 clamp |= ccdc->clamp.oblines << ISPCCDC_CLAMP_OBSLN_SHIFT;
549 clamp |= ccdc->clamp.obstpixel << ISPCCDC_CLAMP_OBST_SHIFT;
550 isp_reg_writel(isp, clamp, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_CLAMP);
551 } else {
552 isp_reg_writel(isp, ccdc->clamp.dcsubval,
553 OMAP3_ISP_IOMEM_CCDC, ISPCCDC_DCSUB);
554 }
555
556 isp_reg_clr_set(isp, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_CLAMP,
557 ISPCCDC_CLAMP_CLAMPEN,
558 ccdc->obclamp ? ISPCCDC_CLAMP_CLAMPEN : 0);
559}
560
561/*
562 * ccdc_configure_fpc - Configure Faulty Pixel Correction
563 * @ccdc: Pointer to ISP CCDC device.
564 */
565static void ccdc_configure_fpc(struct isp_ccdc_device *ccdc)
566{
567 struct isp_device *isp = to_isp_device(ccdc);
568
569 isp_reg_clr(isp, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_FPC, ISPCCDC_FPC_FPCEN);
570
571 if (!ccdc->fpc_en)
572 return;
573
574 isp_reg_writel(isp, ccdc->fpc.fpcaddr, OMAP3_ISP_IOMEM_CCDC,
575 ISPCCDC_FPC_ADDR);
576 /* The FPNUM field must be set before enabling FPC. */
577 isp_reg_writel(isp, (ccdc->fpc.fpnum << ISPCCDC_FPC_FPNUM_SHIFT),
578 OMAP3_ISP_IOMEM_CCDC, ISPCCDC_FPC);
579 isp_reg_writel(isp, (ccdc->fpc.fpnum << ISPCCDC_FPC_FPNUM_SHIFT) |
580 ISPCCDC_FPC_FPCEN, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_FPC);
581}
582
583/*
584 * ccdc_configure_black_comp - Configure Black Level Compensation.
585 * @ccdc: Pointer to ISP CCDC device.
586 */
587static void ccdc_configure_black_comp(struct isp_ccdc_device *ccdc)
588{
589 struct isp_device *isp = to_isp_device(ccdc);
590 u32 blcomp;
591
592 blcomp = ccdc->blcomp.b_mg << ISPCCDC_BLKCMP_B_MG_SHIFT;
593 blcomp |= ccdc->blcomp.gb_g << ISPCCDC_BLKCMP_GB_G_SHIFT;
594 blcomp |= ccdc->blcomp.gr_cy << ISPCCDC_BLKCMP_GR_CY_SHIFT;
595 blcomp |= ccdc->blcomp.r_ye << ISPCCDC_BLKCMP_R_YE_SHIFT;
596
597 isp_reg_writel(isp, blcomp, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_BLKCMP);
598}
599
600/*
601 * ccdc_configure_lpf - Configure Low-Pass Filter (LPF).
602 * @ccdc: Pointer to ISP CCDC device.
603 */
604static void ccdc_configure_lpf(struct isp_ccdc_device *ccdc)
605{
606 struct isp_device *isp = to_isp_device(ccdc);
607
608 isp_reg_clr_set(isp, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_SYN_MODE,
609 ISPCCDC_SYN_MODE_LPF,
610 ccdc->lpf ? ISPCCDC_SYN_MODE_LPF : 0);
611}
612
613/*
614 * ccdc_configure_alaw - Configure A-law compression.
615 * @ccdc: Pointer to ISP CCDC device.
616 */
617static void ccdc_configure_alaw(struct isp_ccdc_device *ccdc)
618{
619 struct isp_device *isp = to_isp_device(ccdc);
620 u32 alaw = 0;
621
622 switch (ccdc->syncif.datsz) {
623 case 8:
624 return;
625
626 case 10:
627 alaw = ISPCCDC_ALAW_GWDI_9_0;
628 break;
629 case 11:
630 alaw = ISPCCDC_ALAW_GWDI_10_1;
631 break;
632 case 12:
633 alaw = ISPCCDC_ALAW_GWDI_11_2;
634 break;
635 case 13:
636 alaw = ISPCCDC_ALAW_GWDI_12_3;
637 break;
638 }
639
640 if (ccdc->alaw)
641 alaw |= ISPCCDC_ALAW_CCDTBL;
642
643 isp_reg_writel(isp, alaw, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_ALAW);
644}
645
646/*
647 * ccdc_config_imgattr - Configure sensor image specific attributes.
648 * @ccdc: Pointer to ISP CCDC device.
649 * @colptn: Color pattern of the sensor.
650 */
651static void ccdc_config_imgattr(struct isp_ccdc_device *ccdc, u32 colptn)
652{
653 struct isp_device *isp = to_isp_device(ccdc);
654
655 isp_reg_writel(isp, colptn, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_COLPTN);
656}
657
658/*
659 * ccdc_config - Set CCDC configuration from userspace
660 * @ccdc: Pointer to ISP CCDC device.
661 * @userspace_add: Structure containing CCDC configuration sent from userspace.
662 *
663 * Returns 0 if successful, -EINVAL if the pointer to the configuration
664 * structure is null, or the copy_from_user function fails to copy user space
665 * memory to kernel space memory.
666 */
667static int ccdc_config(struct isp_ccdc_device *ccdc,
668 struct omap3isp_ccdc_update_config *ccdc_struct)
669{
670 struct isp_device *isp = to_isp_device(ccdc);
671 unsigned long flags;
672
673 spin_lock_irqsave(&ccdc->lock, flags);
674 ccdc->shadow_update = 1;
675 spin_unlock_irqrestore(&ccdc->lock, flags);
676
677 if (OMAP3ISP_CCDC_ALAW & ccdc_struct->update) {
678 ccdc->alaw = !!(OMAP3ISP_CCDC_ALAW & ccdc_struct->flag);
679 ccdc->update |= OMAP3ISP_CCDC_ALAW;
680 }
681
682 if (OMAP3ISP_CCDC_LPF & ccdc_struct->update) {
683 ccdc->lpf = !!(OMAP3ISP_CCDC_LPF & ccdc_struct->flag);
684 ccdc->update |= OMAP3ISP_CCDC_LPF;
685 }
686
687 if (OMAP3ISP_CCDC_BLCLAMP & ccdc_struct->update) {
688 if (copy_from_user(&ccdc->clamp, ccdc_struct->bclamp,
689 sizeof(ccdc->clamp))) {
690 ccdc->shadow_update = 0;
691 return -EFAULT;
692 }
693
694 ccdc->obclamp = !!(OMAP3ISP_CCDC_BLCLAMP & ccdc_struct->flag);
695 ccdc->update |= OMAP3ISP_CCDC_BLCLAMP;
696 }
697
698 if (OMAP3ISP_CCDC_BCOMP & ccdc_struct->update) {
699 if (copy_from_user(&ccdc->blcomp, ccdc_struct->blcomp,
700 sizeof(ccdc->blcomp))) {
701 ccdc->shadow_update = 0;
702 return -EFAULT;
703 }
704
705 ccdc->update |= OMAP3ISP_CCDC_BCOMP;
706 }
707
708 ccdc->shadow_update = 0;
709
710 if (OMAP3ISP_CCDC_FPC & ccdc_struct->update) {
711 u32 table_old = 0;
712 u32 table_new;
713 u32 size;
714
715 if (ccdc->state != ISP_PIPELINE_STREAM_STOPPED)
716 return -EBUSY;
717
718 ccdc->fpc_en = !!(OMAP3ISP_CCDC_FPC & ccdc_struct->flag);
719
720 if (ccdc->fpc_en) {
721 if (copy_from_user(&ccdc->fpc, ccdc_struct->fpc,
722 sizeof(ccdc->fpc)))
723 return -EFAULT;
724
725 /*
726 * table_new must be 64-bytes aligned, but it's
727 * already done by iommu_vmalloc().
728 */
729 size = ccdc->fpc.fpnum * 4;
730 table_new = iommu_vmalloc(isp->iommu, 0, size,
731 IOMMU_FLAG);
732 if (IS_ERR_VALUE(table_new))
733 return -ENOMEM;
734
735 if (copy_from_user(da_to_va(isp->iommu, table_new),
736 (__force void __user *)
737 ccdc->fpc.fpcaddr, size)) {
738 iommu_vfree(isp->iommu, table_new);
739 return -EFAULT;
740 }
741
742 table_old = ccdc->fpc.fpcaddr;
743 ccdc->fpc.fpcaddr = table_new;
744 }
745
746 ccdc_configure_fpc(ccdc);
747 if (table_old != 0)
748 iommu_vfree(isp->iommu, table_old);
749 }
750
751 return ccdc_lsc_config(ccdc, ccdc_struct);
752}
753
754static void ccdc_apply_controls(struct isp_ccdc_device *ccdc)
755{
756 if (ccdc->update & OMAP3ISP_CCDC_ALAW) {
757 ccdc_configure_alaw(ccdc);
758 ccdc->update &= ~OMAP3ISP_CCDC_ALAW;
759 }
760
761 if (ccdc->update & OMAP3ISP_CCDC_LPF) {
762 ccdc_configure_lpf(ccdc);
763 ccdc->update &= ~OMAP3ISP_CCDC_LPF;
764 }
765
766 if (ccdc->update & OMAP3ISP_CCDC_BLCLAMP) {
767 ccdc_configure_clamp(ccdc);
768 ccdc->update &= ~OMAP3ISP_CCDC_BLCLAMP;
769 }
770
771 if (ccdc->update & OMAP3ISP_CCDC_BCOMP) {
772 ccdc_configure_black_comp(ccdc);
773 ccdc->update &= ~OMAP3ISP_CCDC_BCOMP;
774 }
775}
776
777/*
778 * omap3isp_ccdc_restore_context - Restore values of the CCDC module registers
779 * @dev: Pointer to ISP device
780 */
781void omap3isp_ccdc_restore_context(struct isp_device *isp)
782{
783 struct isp_ccdc_device *ccdc = &isp->isp_ccdc;
784
785 isp_reg_set(isp, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_CFG, ISPCCDC_CFG_VDLC);
786
787 ccdc->update = OMAP3ISP_CCDC_ALAW | OMAP3ISP_CCDC_LPF
788 | OMAP3ISP_CCDC_BLCLAMP | OMAP3ISP_CCDC_BCOMP;
789 ccdc_apply_controls(ccdc);
790 ccdc_configure_fpc(ccdc);
791}
792
793/* -----------------------------------------------------------------------------
794 * Format- and pipeline-related configuration helpers
795 */
796
797/*
798 * ccdc_config_vp - Configure the Video Port.
799 * @ccdc: Pointer to ISP CCDC device.
800 */
801static void ccdc_config_vp(struct isp_ccdc_device *ccdc)
802{
803 struct isp_pipeline *pipe = to_isp_pipeline(&ccdc->subdev.entity);
804 struct isp_device *isp = to_isp_device(ccdc);
805 unsigned long l3_ick = pipe->l3_ick;
806 unsigned int max_div = isp->revision == ISP_REVISION_15_0 ? 64 : 8;
807 unsigned int div = 0;
808 u32 fmtcfg_vp;
809
810 fmtcfg_vp = isp_reg_readl(isp, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_FMTCFG)
811 & ~(ISPCCDC_FMTCFG_VPIN_MASK | ISPCCDC_FMTCFG_VPIF_FRQ_MASK);
812
813 switch (ccdc->syncif.datsz) {
814 case 8:
815 case 10:
816 fmtcfg_vp |= ISPCCDC_FMTCFG_VPIN_9_0;
817 break;
818 case 11:
819 fmtcfg_vp |= ISPCCDC_FMTCFG_VPIN_10_1;
820 break;
821 case 12:
822 fmtcfg_vp |= ISPCCDC_FMTCFG_VPIN_11_2;
823 break;
824 case 13:
825 fmtcfg_vp |= ISPCCDC_FMTCFG_VPIN_12_3;
826 break;
827 };
828
829 if (pipe->input)
830 div = DIV_ROUND_UP(l3_ick, pipe->max_rate);
831 else if (ccdc->vpcfg.pixelclk)
832 div = l3_ick / ccdc->vpcfg.pixelclk;
833
834 div = clamp(div, 2U, max_div);
835 fmtcfg_vp |= (div - 2) << ISPCCDC_FMTCFG_VPIF_FRQ_SHIFT;
836
837 isp_reg_writel(isp, fmtcfg_vp, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_FMTCFG);
838}
839
840/*
841 * ccdc_enable_vp - Enable Video Port.
842 * @ccdc: Pointer to ISP CCDC device.
843 * @enable: 0 Disables VP, 1 Enables VP
844 *
845 * This is needed for outputting image to Preview, H3A and HIST ISP submodules.
846 */
847static void ccdc_enable_vp(struct isp_ccdc_device *ccdc, u8 enable)
848{
849 struct isp_device *isp = to_isp_device(ccdc);
850
851 isp_reg_clr_set(isp, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_FMTCFG,
852 ISPCCDC_FMTCFG_VPEN, enable ? ISPCCDC_FMTCFG_VPEN : 0);
853}
854
855/*
856 * ccdc_config_outlineoffset - Configure memory saving output line offset
857 * @ccdc: Pointer to ISP CCDC device.
858 * @offset: Address offset to start a new line. Must be twice the
859 * Output width and aligned on 32 byte boundary
860 * @oddeven: Specifies the odd/even line pattern to be chosen to store the
861 * output.
862 * @numlines: Set the value 0-3 for +1-4lines, 4-7 for -1-4lines.
863 *
864 * - Configures the output line offset when stored in memory
865 * - Sets the odd/even line pattern to store the output
866 * (EVENEVEN (1), ODDEVEN (2), EVENODD (3), ODDODD (4))
867 * - Configures the number of even and odd line fields in case of rearranging
868 * the lines.
869 */
870static void ccdc_config_outlineoffset(struct isp_ccdc_device *ccdc,
871 u32 offset, u8 oddeven, u8 numlines)
872{
873 struct isp_device *isp = to_isp_device(ccdc);
874
875 isp_reg_writel(isp, offset & 0xffff,
876 OMAP3_ISP_IOMEM_CCDC, ISPCCDC_HSIZE_OFF);
877
878 isp_reg_clr(isp, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_SDOFST,
879 ISPCCDC_SDOFST_FINV);
880
881 isp_reg_clr(isp, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_SDOFST,
882 ISPCCDC_SDOFST_FOFST_4L);
883
884 switch (oddeven) {
885 case EVENEVEN:
886 isp_reg_set(isp, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_SDOFST,
887 (numlines & 0x7) << ISPCCDC_SDOFST_LOFST0_SHIFT);
888 break;
889 case ODDEVEN:
890 isp_reg_set(isp, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_SDOFST,
891 (numlines & 0x7) << ISPCCDC_SDOFST_LOFST1_SHIFT);
892 break;
893 case EVENODD:
894 isp_reg_set(isp, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_SDOFST,
895 (numlines & 0x7) << ISPCCDC_SDOFST_LOFST2_SHIFT);
896 break;
897 case ODDODD:
898 isp_reg_set(isp, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_SDOFST,
899 (numlines & 0x7) << ISPCCDC_SDOFST_LOFST3_SHIFT);
900 break;
901 default:
902 break;
903 }
904}
905
906/*
907 * ccdc_set_outaddr - Set memory address to save output image
908 * @ccdc: Pointer to ISP CCDC device.
909 * @addr: ISP MMU Mapped 32-bit memory address aligned on 32 byte boundary.
910 *
911 * Sets the memory address where the output will be saved.
912 */
913static void ccdc_set_outaddr(struct isp_ccdc_device *ccdc, u32 addr)
914{
915 struct isp_device *isp = to_isp_device(ccdc);
916
917 isp_reg_writel(isp, addr, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_SDR_ADDR);
918}
919
920/*
921 * omap3isp_ccdc_max_rate - Calculate maximum input data rate based on the input
922 * @ccdc: Pointer to ISP CCDC device.
923 * @max_rate: Maximum calculated data rate.
924 *
925 * Returns in *max_rate less value between calculated and passed
926 */
927void omap3isp_ccdc_max_rate(struct isp_ccdc_device *ccdc,
928 unsigned int *max_rate)
929{
930 struct isp_pipeline *pipe = to_isp_pipeline(&ccdc->subdev.entity);
931 unsigned int rate;
932
933 if (pipe == NULL)
934 return;
935
936 /*
937 * TRM says that for parallel sensors the maximum data rate
938 * should be 90% form L3/2 clock, otherwise just L3/2.
939 */
940 if (ccdc->input == CCDC_INPUT_PARALLEL)
941 rate = pipe->l3_ick / 2 * 9 / 10;
942 else
943 rate = pipe->l3_ick / 2;
944
945 *max_rate = min(*max_rate, rate);
946}
947
948/*
949 * ccdc_config_sync_if - Set CCDC sync interface configuration
950 * @ccdc: Pointer to ISP CCDC device.
951 * @syncif: Structure containing the sync parameters like field state, CCDC in
952 * master/slave mode, raw/yuv data, polarity of data, field, hs, vs
953 * signals.
954 */
955static void ccdc_config_sync_if(struct isp_ccdc_device *ccdc,
956 struct ispccdc_syncif *syncif)
957{
958 struct isp_device *isp = to_isp_device(ccdc);
959 u32 syn_mode = isp_reg_readl(isp, OMAP3_ISP_IOMEM_CCDC,
960 ISPCCDC_SYN_MODE);
961
962 syn_mode |= ISPCCDC_SYN_MODE_VDHDEN;
963
964 if (syncif->fldstat)
965 syn_mode |= ISPCCDC_SYN_MODE_FLDSTAT;
966 else
967 syn_mode &= ~ISPCCDC_SYN_MODE_FLDSTAT;
968
969 syn_mode &= ~ISPCCDC_SYN_MODE_DATSIZ_MASK;
970 switch (syncif->datsz) {
971 case 8:
972 syn_mode |= ISPCCDC_SYN_MODE_DATSIZ_8;
973 break;
974 case 10:
975 syn_mode |= ISPCCDC_SYN_MODE_DATSIZ_10;
976 break;
977 case 11:
978 syn_mode |= ISPCCDC_SYN_MODE_DATSIZ_11;
979 break;
980 case 12:
981 syn_mode |= ISPCCDC_SYN_MODE_DATSIZ_12;
982 break;
983 };
984
985 if (syncif->fldmode)
986 syn_mode |= ISPCCDC_SYN_MODE_FLDMODE;
987 else
988 syn_mode &= ~ISPCCDC_SYN_MODE_FLDMODE;
989
990 if (syncif->datapol)
991 syn_mode |= ISPCCDC_SYN_MODE_DATAPOL;
992 else
993 syn_mode &= ~ISPCCDC_SYN_MODE_DATAPOL;
994
995 if (syncif->fldpol)
996 syn_mode |= ISPCCDC_SYN_MODE_FLDPOL;
997 else
998 syn_mode &= ~ISPCCDC_SYN_MODE_FLDPOL;
999
1000 if (syncif->hdpol)
1001 syn_mode |= ISPCCDC_SYN_MODE_HDPOL;
1002 else
1003 syn_mode &= ~ISPCCDC_SYN_MODE_HDPOL;
1004
1005 if (syncif->vdpol)
1006 syn_mode |= ISPCCDC_SYN_MODE_VDPOL;
1007 else
1008 syn_mode &= ~ISPCCDC_SYN_MODE_VDPOL;
1009
1010 if (syncif->ccdc_mastermode) {
1011 syn_mode |= ISPCCDC_SYN_MODE_FLDOUT | ISPCCDC_SYN_MODE_VDHDOUT;
1012 isp_reg_writel(isp,
1013 syncif->hs_width << ISPCCDC_HD_VD_WID_HDW_SHIFT
1014 | syncif->vs_width << ISPCCDC_HD_VD_WID_VDW_SHIFT,
1015 OMAP3_ISP_IOMEM_CCDC,
1016 ISPCCDC_HD_VD_WID);
1017
1018 isp_reg_writel(isp,
1019 syncif->ppln << ISPCCDC_PIX_LINES_PPLN_SHIFT
1020 | syncif->hlprf << ISPCCDC_PIX_LINES_HLPRF_SHIFT,
1021 OMAP3_ISP_IOMEM_CCDC,
1022 ISPCCDC_PIX_LINES);
1023 } else
1024 syn_mode &= ~(ISPCCDC_SYN_MODE_FLDOUT |
1025 ISPCCDC_SYN_MODE_VDHDOUT);
1026
1027 isp_reg_writel(isp, syn_mode, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_SYN_MODE);
1028
1029 if (!syncif->bt_r656_en)
1030 isp_reg_clr(isp, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_REC656IF,
1031 ISPCCDC_REC656IF_R656ON);
1032}
1033
1034/* CCDC formats descriptions */
1035static const u32 ccdc_sgrbg_pattern =
1036 ISPCCDC_COLPTN_Gr_Cy << ISPCCDC_COLPTN_CP0PLC0_SHIFT |
1037 ISPCCDC_COLPTN_R_Ye << ISPCCDC_COLPTN_CP0PLC1_SHIFT |
1038 ISPCCDC_COLPTN_Gr_Cy << ISPCCDC_COLPTN_CP0PLC2_SHIFT |
1039 ISPCCDC_COLPTN_R_Ye << ISPCCDC_COLPTN_CP0PLC3_SHIFT |
1040 ISPCCDC_COLPTN_B_Mg << ISPCCDC_COLPTN_CP1PLC0_SHIFT |
1041 ISPCCDC_COLPTN_Gb_G << ISPCCDC_COLPTN_CP1PLC1_SHIFT |
1042 ISPCCDC_COLPTN_B_Mg << ISPCCDC_COLPTN_CP1PLC2_SHIFT |
1043 ISPCCDC_COLPTN_Gb_G << ISPCCDC_COLPTN_CP1PLC3_SHIFT |
1044 ISPCCDC_COLPTN_Gr_Cy << ISPCCDC_COLPTN_CP2PLC0_SHIFT |
1045 ISPCCDC_COLPTN_R_Ye << ISPCCDC_COLPTN_CP2PLC1_SHIFT |
1046 ISPCCDC_COLPTN_Gr_Cy << ISPCCDC_COLPTN_CP2PLC2_SHIFT |
1047 ISPCCDC_COLPTN_R_Ye << ISPCCDC_COLPTN_CP2PLC3_SHIFT |
1048 ISPCCDC_COLPTN_B_Mg << ISPCCDC_COLPTN_CP3PLC0_SHIFT |
1049 ISPCCDC_COLPTN_Gb_G << ISPCCDC_COLPTN_CP3PLC1_SHIFT |
1050 ISPCCDC_COLPTN_B_Mg << ISPCCDC_COLPTN_CP3PLC2_SHIFT |
1051 ISPCCDC_COLPTN_Gb_G << ISPCCDC_COLPTN_CP3PLC3_SHIFT;
1052
1053static const u32 ccdc_srggb_pattern =
1054 ISPCCDC_COLPTN_R_Ye << ISPCCDC_COLPTN_CP0PLC0_SHIFT |
1055 ISPCCDC_COLPTN_Gr_Cy << ISPCCDC_COLPTN_CP0PLC1_SHIFT |
1056 ISPCCDC_COLPTN_R_Ye << ISPCCDC_COLPTN_CP0PLC2_SHIFT |
1057 ISPCCDC_COLPTN_Gr_Cy << ISPCCDC_COLPTN_CP0PLC3_SHIFT |
1058 ISPCCDC_COLPTN_Gb_G << ISPCCDC_COLPTN_CP1PLC0_SHIFT |
1059 ISPCCDC_COLPTN_B_Mg << ISPCCDC_COLPTN_CP1PLC1_SHIFT |
1060 ISPCCDC_COLPTN_Gb_G << ISPCCDC_COLPTN_CP1PLC2_SHIFT |
1061 ISPCCDC_COLPTN_B_Mg << ISPCCDC_COLPTN_CP1PLC3_SHIFT |
1062 ISPCCDC_COLPTN_R_Ye << ISPCCDC_COLPTN_CP2PLC0_SHIFT |
1063 ISPCCDC_COLPTN_Gr_Cy << ISPCCDC_COLPTN_CP2PLC1_SHIFT |
1064 ISPCCDC_COLPTN_R_Ye << ISPCCDC_COLPTN_CP2PLC2_SHIFT |
1065 ISPCCDC_COLPTN_Gr_Cy << ISPCCDC_COLPTN_CP2PLC3_SHIFT |
1066 ISPCCDC_COLPTN_Gb_G << ISPCCDC_COLPTN_CP3PLC0_SHIFT |
1067 ISPCCDC_COLPTN_B_Mg << ISPCCDC_COLPTN_CP3PLC1_SHIFT |
1068 ISPCCDC_COLPTN_Gb_G << ISPCCDC_COLPTN_CP3PLC2_SHIFT |
1069 ISPCCDC_COLPTN_B_Mg << ISPCCDC_COLPTN_CP3PLC3_SHIFT;
1070
1071static const u32 ccdc_sbggr_pattern =
1072 ISPCCDC_COLPTN_B_Mg << ISPCCDC_COLPTN_CP0PLC0_SHIFT |
1073 ISPCCDC_COLPTN_Gb_G << ISPCCDC_COLPTN_CP0PLC1_SHIFT |
1074 ISPCCDC_COLPTN_B_Mg << ISPCCDC_COLPTN_CP0PLC2_SHIFT |
1075 ISPCCDC_COLPTN_Gb_G << ISPCCDC_COLPTN_CP0PLC3_SHIFT |
1076 ISPCCDC_COLPTN_Gr_Cy << ISPCCDC_COLPTN_CP1PLC0_SHIFT |
1077 ISPCCDC_COLPTN_R_Ye << ISPCCDC_COLPTN_CP1PLC1_SHIFT |
1078 ISPCCDC_COLPTN_Gr_Cy << ISPCCDC_COLPTN_CP1PLC2_SHIFT |
1079 ISPCCDC_COLPTN_R_Ye << ISPCCDC_COLPTN_CP1PLC3_SHIFT |
1080 ISPCCDC_COLPTN_B_Mg << ISPCCDC_COLPTN_CP2PLC0_SHIFT |
1081 ISPCCDC_COLPTN_Gb_G << ISPCCDC_COLPTN_CP2PLC1_SHIFT |
1082 ISPCCDC_COLPTN_B_Mg << ISPCCDC_COLPTN_CP2PLC2_SHIFT |
1083 ISPCCDC_COLPTN_Gb_G << ISPCCDC_COLPTN_CP2PLC3_SHIFT |
1084 ISPCCDC_COLPTN_Gr_Cy << ISPCCDC_COLPTN_CP3PLC0_SHIFT |
1085 ISPCCDC_COLPTN_R_Ye << ISPCCDC_COLPTN_CP3PLC1_SHIFT |
1086 ISPCCDC_COLPTN_Gr_Cy << ISPCCDC_COLPTN_CP3PLC2_SHIFT |
1087 ISPCCDC_COLPTN_R_Ye << ISPCCDC_COLPTN_CP3PLC3_SHIFT;
1088
1089static const u32 ccdc_sgbrg_pattern =
1090 ISPCCDC_COLPTN_Gb_G << ISPCCDC_COLPTN_CP0PLC0_SHIFT |
1091 ISPCCDC_COLPTN_B_Mg << ISPCCDC_COLPTN_CP0PLC1_SHIFT |
1092 ISPCCDC_COLPTN_Gb_G << ISPCCDC_COLPTN_CP0PLC2_SHIFT |
1093 ISPCCDC_COLPTN_B_Mg << ISPCCDC_COLPTN_CP0PLC3_SHIFT |
1094 ISPCCDC_COLPTN_R_Ye << ISPCCDC_COLPTN_CP1PLC0_SHIFT |
1095 ISPCCDC_COLPTN_Gr_Cy << ISPCCDC_COLPTN_CP1PLC1_SHIFT |
1096 ISPCCDC_COLPTN_R_Ye << ISPCCDC_COLPTN_CP1PLC2_SHIFT |
1097 ISPCCDC_COLPTN_Gr_Cy << ISPCCDC_COLPTN_CP1PLC3_SHIFT |
1098 ISPCCDC_COLPTN_Gb_G << ISPCCDC_COLPTN_CP2PLC0_SHIFT |
1099 ISPCCDC_COLPTN_B_Mg << ISPCCDC_COLPTN_CP2PLC1_SHIFT |
1100 ISPCCDC_COLPTN_Gb_G << ISPCCDC_COLPTN_CP2PLC2_SHIFT |
1101 ISPCCDC_COLPTN_B_Mg << ISPCCDC_COLPTN_CP2PLC3_SHIFT |
1102 ISPCCDC_COLPTN_R_Ye << ISPCCDC_COLPTN_CP3PLC0_SHIFT |
1103 ISPCCDC_COLPTN_Gr_Cy << ISPCCDC_COLPTN_CP3PLC1_SHIFT |
1104 ISPCCDC_COLPTN_R_Ye << ISPCCDC_COLPTN_CP3PLC2_SHIFT |
1105 ISPCCDC_COLPTN_Gr_Cy << ISPCCDC_COLPTN_CP3PLC3_SHIFT;
1106
1107static void ccdc_configure(struct isp_ccdc_device *ccdc)
1108{
1109 struct isp_device *isp = to_isp_device(ccdc);
1110 struct isp_parallel_platform_data *pdata = NULL;
1111 struct v4l2_subdev *sensor;
1112 struct v4l2_mbus_framefmt *format;
1113 struct media_pad *pad;
1114 unsigned long flags;
1115 u32 syn_mode;
1116 u32 ccdc_pattern;
1117
1118 if (ccdc->input == CCDC_INPUT_PARALLEL) {
1119 pad = media_entity_remote_source(&ccdc->pads[CCDC_PAD_SINK]);
1120 sensor = media_entity_to_v4l2_subdev(pad->entity);
1121 pdata = &((struct isp_v4l2_subdevs_group *)sensor->host_priv)
1122 ->bus.parallel;
1123 }
1124
1125 omap3isp_configure_bridge(isp, ccdc->input, pdata);
1126
1127 ccdc->syncif.datsz = pdata ? pdata->width : 10;
1128 ccdc_config_sync_if(ccdc, &ccdc->syncif);
1129
1130 /* CCDC_PAD_SINK */
1131 format = &ccdc->formats[CCDC_PAD_SINK];
1132
1133 syn_mode = isp_reg_readl(isp, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_SYN_MODE);
1134
1135 /* Use the raw, unprocessed data when writing to memory. The H3A and
1136 * histogram modules are still fed with lens shading corrected data.
1137 */
1138 syn_mode &= ~ISPCCDC_SYN_MODE_VP2SDR;
1139
1140 if (ccdc->output & CCDC_OUTPUT_MEMORY)
1141 syn_mode |= ISPCCDC_SYN_MODE_WEN;
1142 else
1143 syn_mode &= ~ISPCCDC_SYN_MODE_WEN;
1144
1145 if (ccdc->output & CCDC_OUTPUT_RESIZER)
1146 syn_mode |= ISPCCDC_SYN_MODE_SDR2RSZ;
1147 else
1148 syn_mode &= ~ISPCCDC_SYN_MODE_SDR2RSZ;
1149
1150 /* Use PACK8 mode for 1byte per pixel formats. */
1151 if (omap3isp_video_format_info(format->code)->bpp <= 8)
1152 syn_mode |= ISPCCDC_SYN_MODE_PACK8;
1153 else
1154 syn_mode &= ~ISPCCDC_SYN_MODE_PACK8;
1155
1156 isp_reg_writel(isp, syn_mode, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_SYN_MODE);
1157
1158 /* Mosaic filter */
1159 switch (format->code) {
1160 case V4L2_MBUS_FMT_SRGGB10_1X10:
1161 case V4L2_MBUS_FMT_SRGGB12_1X12:
1162 ccdc_pattern = ccdc_srggb_pattern;
1163 break;
1164 case V4L2_MBUS_FMT_SBGGR10_1X10:
1165 case V4L2_MBUS_FMT_SBGGR12_1X12:
1166 ccdc_pattern = ccdc_sbggr_pattern;
1167 break;
1168 case V4L2_MBUS_FMT_SGBRG10_1X10:
1169 case V4L2_MBUS_FMT_SGBRG12_1X12:
1170 ccdc_pattern = ccdc_sgbrg_pattern;
1171 break;
1172 default:
1173 /* Use GRBG */
1174 ccdc_pattern = ccdc_sgrbg_pattern;
1175 break;
1176 }
1177 ccdc_config_imgattr(ccdc, ccdc_pattern);
1178
1179 /* Generate VD0 on the last line of the image and VD1 on the
1180 * 2/3 height line.
1181 */
1182 isp_reg_writel(isp, ((format->height - 2) << ISPCCDC_VDINT_0_SHIFT) |
1183 ((format->height * 2 / 3) << ISPCCDC_VDINT_1_SHIFT),
1184 OMAP3_ISP_IOMEM_CCDC, ISPCCDC_VDINT);
1185
1186 /* CCDC_PAD_SOURCE_OF */
1187 format = &ccdc->formats[CCDC_PAD_SOURCE_OF];
1188
1189 isp_reg_writel(isp, (0 << ISPCCDC_HORZ_INFO_SPH_SHIFT) |
1190 ((format->width - 1) << ISPCCDC_HORZ_INFO_NPH_SHIFT),
1191 OMAP3_ISP_IOMEM_CCDC, ISPCCDC_HORZ_INFO);
1192 isp_reg_writel(isp, 0 << ISPCCDC_VERT_START_SLV0_SHIFT,
1193 OMAP3_ISP_IOMEM_CCDC, ISPCCDC_VERT_START);
1194 isp_reg_writel(isp, (format->height - 1)
1195 << ISPCCDC_VERT_LINES_NLV_SHIFT,
1196 OMAP3_ISP_IOMEM_CCDC, ISPCCDC_VERT_LINES);
1197
1198 ccdc_config_outlineoffset(ccdc, ccdc->video_out.bpl_value, 0, 0);
1199
1200 /* CCDC_PAD_SOURCE_VP */
1201 format = &ccdc->formats[CCDC_PAD_SOURCE_VP];
1202
1203 isp_reg_writel(isp, (0 << ISPCCDC_FMT_HORZ_FMTSPH_SHIFT) |
1204 (format->width << ISPCCDC_FMT_HORZ_FMTLNH_SHIFT),
1205 OMAP3_ISP_IOMEM_CCDC, ISPCCDC_FMT_HORZ);
1206 isp_reg_writel(isp, (0 << ISPCCDC_FMT_VERT_FMTSLV_SHIFT) |
1207 ((format->height + 1) << ISPCCDC_FMT_VERT_FMTLNV_SHIFT),
1208 OMAP3_ISP_IOMEM_CCDC, ISPCCDC_FMT_VERT);
1209
1210 isp_reg_writel(isp, (format->width << ISPCCDC_VP_OUT_HORZ_NUM_SHIFT) |
1211 (format->height << ISPCCDC_VP_OUT_VERT_NUM_SHIFT),
1212 OMAP3_ISP_IOMEM_CCDC, ISPCCDC_VP_OUT);
1213
1214 spin_lock_irqsave(&ccdc->lsc.req_lock, flags);
1215 if (ccdc->lsc.request == NULL)
1216 goto unlock;
1217
1218 WARN_ON(ccdc->lsc.active);
1219
1220 /* Get last good LSC configuration. If it is not supported for
1221 * the current active resolution discard it.
1222 */
1223 if (ccdc->lsc.active == NULL &&
1224 __ccdc_lsc_configure(ccdc, ccdc->lsc.request) == 0) {
1225 ccdc->lsc.active = ccdc->lsc.request;
1226 } else {
1227 list_add_tail(&ccdc->lsc.request->list, &ccdc->lsc.free_queue);
1228 schedule_work(&ccdc->lsc.table_work);
1229 }
1230
1231 ccdc->lsc.request = NULL;
1232
1233unlock:
1234 spin_unlock_irqrestore(&ccdc->lsc.req_lock, flags);
1235
1236 ccdc_apply_controls(ccdc);
1237}
1238
1239static void __ccdc_enable(struct isp_ccdc_device *ccdc, int enable)
1240{
1241 struct isp_device *isp = to_isp_device(ccdc);
1242
1243 isp_reg_clr_set(isp, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_PCR,
1244 ISPCCDC_PCR_EN, enable ? ISPCCDC_PCR_EN : 0);
1245}
1246
1247static int ccdc_disable(struct isp_ccdc_device *ccdc)
1248{
1249 unsigned long flags;
1250 int ret = 0;
1251
1252 spin_lock_irqsave(&ccdc->lock, flags);
1253 if (ccdc->state == ISP_PIPELINE_STREAM_CONTINUOUS)
1254 ccdc->stopping = CCDC_STOP_REQUEST;
1255 spin_unlock_irqrestore(&ccdc->lock, flags);
1256
1257 ret = wait_event_timeout(ccdc->wait,
1258 ccdc->stopping == CCDC_STOP_FINISHED,
1259 msecs_to_jiffies(2000));
1260 if (ret == 0) {
1261 ret = -ETIMEDOUT;
1262 dev_warn(to_device(ccdc), "CCDC stop timeout!\n");
1263 }
1264
1265 omap3isp_sbl_disable(to_isp_device(ccdc), OMAP3_ISP_SBL_CCDC_LSC_READ);
1266
1267 mutex_lock(&ccdc->ioctl_lock);
1268 ccdc_lsc_free_request(ccdc, ccdc->lsc.request);
1269 ccdc->lsc.request = ccdc->lsc.active;
1270 ccdc->lsc.active = NULL;
1271 cancel_work_sync(&ccdc->lsc.table_work);
1272 ccdc_lsc_free_queue(ccdc, &ccdc->lsc.free_queue);
1273 mutex_unlock(&ccdc->ioctl_lock);
1274
1275 ccdc->stopping = CCDC_STOP_NOT_REQUESTED;
1276
1277 return ret > 0 ? 0 : ret;
1278}
1279
1280static void ccdc_enable(struct isp_ccdc_device *ccdc)
1281{
1282 if (ccdc_lsc_is_configured(ccdc))
1283 __ccdc_lsc_enable(ccdc, 1);
1284 __ccdc_enable(ccdc, 1);
1285}
1286
1287/* -----------------------------------------------------------------------------
1288 * Interrupt handling
1289 */
1290
1291/*
1292 * ccdc_sbl_busy - Poll idle state of CCDC and related SBL memory write bits
1293 * @ccdc: Pointer to ISP CCDC device.
1294 *
1295 * Returns zero if the CCDC is idle and the image has been written to
1296 * memory, too.
1297 */
1298static int ccdc_sbl_busy(struct isp_ccdc_device *ccdc)
1299{
1300 struct isp_device *isp = to_isp_device(ccdc);
1301
1302 return omap3isp_ccdc_busy(ccdc)
1303 | (isp_reg_readl(isp, OMAP3_ISP_IOMEM_SBL, ISPSBL_CCDC_WR_0) &
1304 ISPSBL_CCDC_WR_0_DATA_READY)
1305 | (isp_reg_readl(isp, OMAP3_ISP_IOMEM_SBL, ISPSBL_CCDC_WR_1) &
1306 ISPSBL_CCDC_WR_0_DATA_READY)
1307 | (isp_reg_readl(isp, OMAP3_ISP_IOMEM_SBL, ISPSBL_CCDC_WR_2) &
1308 ISPSBL_CCDC_WR_0_DATA_READY)
1309 | (isp_reg_readl(isp, OMAP3_ISP_IOMEM_SBL, ISPSBL_CCDC_WR_3) &
1310 ISPSBL_CCDC_WR_0_DATA_READY);
1311}
1312
1313/*
1314 * ccdc_sbl_wait_idle - Wait until the CCDC and related SBL are idle
1315 * @ccdc: Pointer to ISP CCDC device.
1316 * @max_wait: Max retry count in us for wait for idle/busy transition.
1317 */
1318static int ccdc_sbl_wait_idle(struct isp_ccdc_device *ccdc,
1319 unsigned int max_wait)
1320{
1321 unsigned int wait = 0;
1322
1323 if (max_wait == 0)
1324 max_wait = 10000; /* 10 ms */
1325
1326 for (wait = 0; wait <= max_wait; wait++) {
1327 if (!ccdc_sbl_busy(ccdc))
1328 return 0;
1329
1330 rmb();
1331 udelay(1);
1332 }
1333
1334 return -EBUSY;
1335}
1336
1337/* __ccdc_handle_stopping - Handle CCDC and/or LSC stopping sequence
1338 * @ccdc: Pointer to ISP CCDC device.
1339 * @event: Pointing which event trigger handler
1340 *
1341 * Return 1 when the event and stopping request combination is satisfyied,
1342 * zero otherwise.
1343 */
1344static int __ccdc_handle_stopping(struct isp_ccdc_device *ccdc, u32 event)
1345{
1346 int rval = 0;
1347
1348 switch ((ccdc->stopping & 3) | event) {
1349 case CCDC_STOP_REQUEST | CCDC_EVENT_VD1:
1350 if (ccdc->lsc.state != LSC_STATE_STOPPED)
1351 __ccdc_lsc_enable(ccdc, 0);
1352 __ccdc_enable(ccdc, 0);
1353 ccdc->stopping = CCDC_STOP_EXECUTED;
1354 return 1;
1355
1356 case CCDC_STOP_EXECUTED | CCDC_EVENT_VD0:
1357 ccdc->stopping |= CCDC_STOP_CCDC_FINISHED;
1358 if (ccdc->lsc.state == LSC_STATE_STOPPED)
1359 ccdc->stopping |= CCDC_STOP_LSC_FINISHED;
1360 rval = 1;
1361 break;
1362
1363 case CCDC_STOP_EXECUTED | CCDC_EVENT_LSC_DONE:
1364 ccdc->stopping |= CCDC_STOP_LSC_FINISHED;
1365 rval = 1;
1366 break;
1367
1368 case CCDC_STOP_EXECUTED | CCDC_EVENT_VD1:
1369 return 1;
1370 }
1371
1372 if (ccdc->stopping == CCDC_STOP_FINISHED) {
1373 wake_up(&ccdc->wait);
1374 rval = 1;
1375 }
1376
1377 return rval;
1378}
1379
1380static void ccdc_hs_vs_isr(struct isp_ccdc_device *ccdc)
1381{
1382 struct video_device *vdev = &ccdc->subdev.devnode;
1383 struct v4l2_event event;
1384
1385 memset(&event, 0, sizeof(event));
1386 event.type = V4L2_EVENT_OMAP3ISP_HS_VS;
1387
1388 v4l2_event_queue(vdev, &event);
1389}
1390
1391/*
1392 * ccdc_lsc_isr - Handle LSC events
1393 * @ccdc: Pointer to ISP CCDC device.
1394 * @events: LSC events
1395 */
1396static void ccdc_lsc_isr(struct isp_ccdc_device *ccdc, u32 events)
1397{
1398 unsigned long flags;
1399
1400 if (events & IRQ0STATUS_CCDC_LSC_PREF_ERR_IRQ) {
1401 ccdc_lsc_error_handler(ccdc);
1402 ccdc->error = 1;
1403 dev_dbg(to_device(ccdc), "lsc prefetch error\n");
1404 }
1405
1406 if (!(events & IRQ0STATUS_CCDC_LSC_DONE_IRQ))
1407 return;
1408
1409 /* LSC_DONE interrupt occur, there are two cases
1410 * 1. stopping for reconfiguration
1411 * 2. stopping because of STREAM OFF command
1412 */
1413 spin_lock_irqsave(&ccdc->lsc.req_lock, flags);
1414
1415 if (ccdc->lsc.state == LSC_STATE_STOPPING)
1416 ccdc->lsc.state = LSC_STATE_STOPPED;
1417
1418 if (__ccdc_handle_stopping(ccdc, CCDC_EVENT_LSC_DONE))
1419 goto done;
1420
1421 if (ccdc->lsc.state != LSC_STATE_RECONFIG)
1422 goto done;
1423
1424 /* LSC is in STOPPING state, change to the new state */
1425 ccdc->lsc.state = LSC_STATE_STOPPED;
1426
1427 /* This is an exception. Start of frame and LSC_DONE interrupt
1428 * have been received on the same time. Skip this event and wait
1429 * for better times.
1430 */
1431 if (events & IRQ0STATUS_HS_VS_IRQ)
1432 goto done;
1433
1434 /* The LSC engine is stopped at this point. Enable it if there's a
1435 * pending request.
1436 */
1437 if (ccdc->lsc.request == NULL)
1438 goto done;
1439
1440 ccdc_lsc_enable(ccdc);
1441
1442done:
1443 spin_unlock_irqrestore(&ccdc->lsc.req_lock, flags);
1444}
1445
1446static int ccdc_isr_buffer(struct isp_ccdc_device *ccdc)
1447{
1448 struct isp_pipeline *pipe = to_isp_pipeline(&ccdc->subdev.entity);
1449 struct isp_device *isp = to_isp_device(ccdc);
1450 struct isp_buffer *buffer;
1451 int restart = 0;
1452
1453 /* The CCDC generates VD0 interrupts even when disabled (the datasheet
1454 * doesn't explicitly state if that's supposed to happen or not, so it
1455 * can be considered as a hardware bug or as a feature, but we have to
1456 * deal with it anyway). Disabling the CCDC when no buffer is available
1457 * would thus not be enough, we need to handle the situation explicitly.
1458 */
1459 if (list_empty(&ccdc->video_out.dmaqueue))
1460 goto done;
1461
1462 /* We're in continuous mode, and memory writes were disabled due to a
1463 * buffer underrun. Reenable them now that we have a buffer. The buffer
1464 * address has been set in ccdc_video_queue.
1465 */
1466 if (ccdc->state == ISP_PIPELINE_STREAM_CONTINUOUS && ccdc->underrun) {
1467 restart = 1;
1468 ccdc->underrun = 0;
1469 goto done;
1470 }
1471
1472 if (ccdc_sbl_wait_idle(ccdc, 1000)) {
1473 dev_info(isp->dev, "CCDC won't become idle!\n");
1474 goto done;
1475 }
1476
1477 buffer = omap3isp_video_buffer_next(&ccdc->video_out, ccdc->error);
1478 if (buffer != NULL) {
1479 ccdc_set_outaddr(ccdc, buffer->isp_addr);
1480 restart = 1;
1481 }
1482
1483 pipe->state |= ISP_PIPELINE_IDLE_OUTPUT;
1484
1485 if (ccdc->state == ISP_PIPELINE_STREAM_SINGLESHOT &&
1486 isp_pipeline_ready(pipe))
1487 omap3isp_pipeline_set_stream(pipe,
1488 ISP_PIPELINE_STREAM_SINGLESHOT);
1489
1490done:
1491 ccdc->error = 0;
1492 return restart;
1493}
1494
1495/*
1496 * ccdc_vd0_isr - Handle VD0 event
1497 * @ccdc: Pointer to ISP CCDC device.
1498 *
1499 * Executes LSC deferred enablement before next frame starts.
1500 */
1501static void ccdc_vd0_isr(struct isp_ccdc_device *ccdc)
1502{
1503 unsigned long flags;
1504 int restart = 0;
1505
1506 if (ccdc->output & CCDC_OUTPUT_MEMORY)
1507 restart = ccdc_isr_buffer(ccdc);
1508
1509 spin_lock_irqsave(&ccdc->lock, flags);
1510 if (__ccdc_handle_stopping(ccdc, CCDC_EVENT_VD0)) {
1511 spin_unlock_irqrestore(&ccdc->lock, flags);
1512 return;
1513 }
1514
1515 if (!ccdc->shadow_update)
1516 ccdc_apply_controls(ccdc);
1517 spin_unlock_irqrestore(&ccdc->lock, flags);
1518
1519 if (restart)
1520 ccdc_enable(ccdc);
1521}
1522
1523/*
1524 * ccdc_vd1_isr - Handle VD1 event
1525 * @ccdc: Pointer to ISP CCDC device.
1526 */
1527static void ccdc_vd1_isr(struct isp_ccdc_device *ccdc)
1528{
1529 unsigned long flags;
1530
1531 spin_lock_irqsave(&ccdc->lsc.req_lock, flags);
1532
1533 /*
1534 * Depending on the CCDC pipeline state, CCDC stopping should be
1535 * handled differently. In SINGLESHOT we emulate an internal CCDC
1536 * stopping because the CCDC hw works only in continuous mode.
1537 * When CONTINUOUS pipeline state is used and the CCDC writes it's
1538 * data to memory the CCDC and LSC are stopped immediately but
1539 * without change the CCDC stopping state machine. The CCDC
1540 * stopping state machine should be used only when user request
1541 * for stopping is received (SINGLESHOT is an exeption).
1542 */
1543 switch (ccdc->state) {
1544 case ISP_PIPELINE_STREAM_SINGLESHOT:
1545 ccdc->stopping = CCDC_STOP_REQUEST;
1546 break;
1547
1548 case ISP_PIPELINE_STREAM_CONTINUOUS:
1549 if (ccdc->output & CCDC_OUTPUT_MEMORY) {
1550 if (ccdc->lsc.state != LSC_STATE_STOPPED)
1551 __ccdc_lsc_enable(ccdc, 0);
1552 __ccdc_enable(ccdc, 0);
1553 }
1554 break;
1555
1556 case ISP_PIPELINE_STREAM_STOPPED:
1557 break;
1558 }
1559
1560 if (__ccdc_handle_stopping(ccdc, CCDC_EVENT_VD1))
1561 goto done;
1562
1563 if (ccdc->lsc.request == NULL)
1564 goto done;
1565
1566 /*
1567 * LSC need to be reconfigured. Stop it here and on next LSC_DONE IRQ
1568 * do the appropriate changes in registers
1569 */
1570 if (ccdc->lsc.state == LSC_STATE_RUNNING) {
1571 __ccdc_lsc_enable(ccdc, 0);
1572 ccdc->lsc.state = LSC_STATE_RECONFIG;
1573 goto done;
1574 }
1575
1576 /* LSC has been in STOPPED state, enable it */
1577 if (ccdc->lsc.state == LSC_STATE_STOPPED)
1578 ccdc_lsc_enable(ccdc);
1579
1580done:
1581 spin_unlock_irqrestore(&ccdc->lsc.req_lock, flags);
1582}
1583
1584/*
1585 * omap3isp_ccdc_isr - Configure CCDC during interframe time.
1586 * @ccdc: Pointer to ISP CCDC device.
1587 * @events: CCDC events
1588 */
1589int omap3isp_ccdc_isr(struct isp_ccdc_device *ccdc, u32 events)
1590{
1591 if (ccdc->state == ISP_PIPELINE_STREAM_STOPPED)
1592 return 0;
1593
1594 if (events & IRQ0STATUS_CCDC_VD1_IRQ)
1595 ccdc_vd1_isr(ccdc);
1596
1597 ccdc_lsc_isr(ccdc, events);
1598
1599 if (events & IRQ0STATUS_CCDC_VD0_IRQ)
1600 ccdc_vd0_isr(ccdc);
1601
1602 if (events & IRQ0STATUS_HS_VS_IRQ)
1603 ccdc_hs_vs_isr(ccdc);
1604
1605 return 0;
1606}
1607
1608/* -----------------------------------------------------------------------------
1609 * ISP video operations
1610 */
1611
1612static int ccdc_video_queue(struct isp_video *video, struct isp_buffer *buffer)
1613{
1614 struct isp_ccdc_device *ccdc = &video->isp->isp_ccdc;
1615
1616 if (!(ccdc->output & CCDC_OUTPUT_MEMORY))
1617 return -ENODEV;
1618
1619 ccdc_set_outaddr(ccdc, buffer->isp_addr);
1620
1621 /* We now have a buffer queued on the output, restart the pipeline in
1622 * on the next CCDC interrupt if running in continuous mode (or when
1623 * starting the stream).
1624 */
1625 ccdc->underrun = 1;
1626
1627 return 0;
1628}
1629
1630static const struct isp_video_operations ccdc_video_ops = {
1631 .queue = ccdc_video_queue,
1632};
1633
1634/* -----------------------------------------------------------------------------
1635 * V4L2 subdev operations
1636 */
1637
1638/*
1639 * ccdc_ioctl - CCDC module private ioctl's
1640 * @sd: ISP CCDC V4L2 subdevice
1641 * @cmd: ioctl command
1642 * @arg: ioctl argument
1643 *
1644 * Return 0 on success or a negative error code otherwise.
1645 */
1646static long ccdc_ioctl(struct v4l2_subdev *sd, unsigned int cmd, void *arg)
1647{
1648 struct isp_ccdc_device *ccdc = v4l2_get_subdevdata(sd);
1649 int ret;
1650
1651 switch (cmd) {
1652 case VIDIOC_OMAP3ISP_CCDC_CFG:
1653 mutex_lock(&ccdc->ioctl_lock);
1654 ret = ccdc_config(ccdc, arg);
1655 mutex_unlock(&ccdc->ioctl_lock);
1656 break;
1657
1658 default:
1659 return -ENOIOCTLCMD;
1660 }
1661
1662 return ret;
1663}
1664
1665static int ccdc_subscribe_event(struct v4l2_subdev *sd, struct v4l2_fh *fh,
1666 struct v4l2_event_subscription *sub)
1667{
1668 if (sub->type != V4L2_EVENT_OMAP3ISP_HS_VS)
1669 return -EINVAL;
1670
1671 return v4l2_event_subscribe(fh, sub);
1672}
1673
1674static int ccdc_unsubscribe_event(struct v4l2_subdev *sd, struct v4l2_fh *fh,
1675 struct v4l2_event_subscription *sub)
1676{
1677 return v4l2_event_unsubscribe(fh, sub);
1678}
1679
1680/*
1681 * ccdc_set_stream - Enable/Disable streaming on the CCDC module
1682 * @sd: ISP CCDC V4L2 subdevice
1683 * @enable: Enable/disable stream
1684 *
1685 * When writing to memory, the CCDC hardware can't be enabled without a memory
1686 * buffer to write to. As the s_stream operation is called in response to a
1687 * STREAMON call without any buffer queued yet, just update the enabled field
1688 * and return immediately. The CCDC will be enabled in ccdc_isr_buffer().
1689 *
1690 * When not writing to memory enable the CCDC immediately.
1691 */
1692static int ccdc_set_stream(struct v4l2_subdev *sd, int enable)
1693{
1694 struct isp_ccdc_device *ccdc = v4l2_get_subdevdata(sd);
1695 struct isp_device *isp = to_isp_device(ccdc);
1696 int ret = 0;
1697
1698 if (ccdc->state == ISP_PIPELINE_STREAM_STOPPED) {
1699 if (enable == ISP_PIPELINE_STREAM_STOPPED)
1700 return 0;
1701
1702 omap3isp_subclk_enable(isp, OMAP3_ISP_SUBCLK_CCDC);
1703 isp_reg_set(isp, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_CFG,
1704 ISPCCDC_CFG_VDLC);
1705
1706 ccdc_configure(ccdc);
1707
1708 /* TODO: Don't configure the video port if all of its output
1709 * links are inactive.
1710 */
1711 ccdc_config_vp(ccdc);
1712 ccdc_enable_vp(ccdc, 1);
1713 ccdc->error = 0;
1714 ccdc_print_status(ccdc);
1715 }
1716
1717 switch (enable) {
1718 case ISP_PIPELINE_STREAM_CONTINUOUS:
1719 if (ccdc->output & CCDC_OUTPUT_MEMORY)
1720 omap3isp_sbl_enable(isp, OMAP3_ISP_SBL_CCDC_WRITE);
1721
1722 if (ccdc->underrun || !(ccdc->output & CCDC_OUTPUT_MEMORY))
1723 ccdc_enable(ccdc);
1724
1725 ccdc->underrun = 0;
1726 break;
1727
1728 case ISP_PIPELINE_STREAM_SINGLESHOT:
1729 if (ccdc->output & CCDC_OUTPUT_MEMORY &&
1730 ccdc->state != ISP_PIPELINE_STREAM_SINGLESHOT)
1731 omap3isp_sbl_enable(isp, OMAP3_ISP_SBL_CCDC_WRITE);
1732
1733 ccdc_enable(ccdc);
1734 break;
1735
1736 case ISP_PIPELINE_STREAM_STOPPED:
1737 ret = ccdc_disable(ccdc);
1738 if (ccdc->output & CCDC_OUTPUT_MEMORY)
1739 omap3isp_sbl_disable(isp, OMAP3_ISP_SBL_CCDC_WRITE);
1740 omap3isp_subclk_disable(isp, OMAP3_ISP_SUBCLK_CCDC);
1741 ccdc->underrun = 0;
1742 break;
1743 }
1744
1745 ccdc->state = enable;
1746 return ret;
1747}
1748
1749static struct v4l2_mbus_framefmt *
1750__ccdc_get_format(struct isp_ccdc_device *ccdc, struct v4l2_subdev_fh *fh,
1751 unsigned int pad, enum v4l2_subdev_format_whence which)
1752{
1753 if (which == V4L2_SUBDEV_FORMAT_TRY)
1754 return v4l2_subdev_get_try_format(fh, pad);
1755 else
1756 return &ccdc->formats[pad];
1757}
1758
1759/*
1760 * ccdc_try_format - Try video format on a pad
1761 * @ccdc: ISP CCDC device
1762 * @fh : V4L2 subdev file handle
1763 * @pad: Pad number
1764 * @fmt: Format
1765 */
1766static void
1767ccdc_try_format(struct isp_ccdc_device *ccdc, struct v4l2_subdev_fh *fh,
1768 unsigned int pad, struct v4l2_mbus_framefmt *fmt,
1769 enum v4l2_subdev_format_whence which)
1770{
1771 struct v4l2_mbus_framefmt *format;
1772 const struct isp_format_info *info;
1773 unsigned int width = fmt->width;
1774 unsigned int height = fmt->height;
1775 unsigned int i;
1776
1777 switch (pad) {
1778 case CCDC_PAD_SINK:
1779 /* TODO: If the CCDC output formatter pad is connected directly
1780 * to the resizer, only YUV formats can be used.
1781 */
1782 for (i = 0; i < ARRAY_SIZE(ccdc_fmts); i++) {
1783 if (fmt->code == ccdc_fmts[i])
1784 break;
1785 }
1786
1787 /* If not found, use SGRBG10 as default */
1788 if (i >= ARRAY_SIZE(ccdc_fmts))
1789 fmt->code = V4L2_MBUS_FMT_SGRBG10_1X10;
1790
1791 /* Clamp the input size. */
1792 fmt->width = clamp_t(u32, width, 32, 4096);
1793 fmt->height = clamp_t(u32, height, 32, 4096);
1794 break;
1795
1796 case CCDC_PAD_SOURCE_OF:
1797 format = __ccdc_get_format(ccdc, fh, CCDC_PAD_SINK, which);
1798 memcpy(fmt, format, sizeof(*fmt));
1799
1800 /* The data formatter truncates the number of horizontal output
1801 * pixels to a multiple of 16. To avoid clipping data, allow
1802 * callers to request an output size bigger than the input size
1803 * up to the nearest multiple of 16.
1804 */
1805 fmt->width = clamp_t(u32, width, 32, (fmt->width + 15) & ~15);
1806 fmt->width &= ~15;
1807 fmt->height = clamp_t(u32, height, 32, fmt->height);
1808 break;
1809
1810 case CCDC_PAD_SOURCE_VP:
1811 format = __ccdc_get_format(ccdc, fh, CCDC_PAD_SINK, which);
1812 memcpy(fmt, format, sizeof(*fmt));
1813
1814 /* The video port interface truncates the data to 10 bits. */
1815 info = omap3isp_video_format_info(fmt->code);
1816 fmt->code = info->truncated;
1817
1818 /* The number of lines that can be clocked out from the video
1819 * port output must be at least one line less than the number
1820 * of input lines.
1821 */
1822 fmt->width = clamp_t(u32, width, 32, fmt->width);
1823 fmt->height = clamp_t(u32, height, 32, fmt->height - 1);
1824 break;
1825 }
1826
1827 /* Data is written to memory unpacked, each 10-bit or 12-bit pixel is
1828 * stored on 2 bytes.
1829 */
1830 fmt->colorspace = V4L2_COLORSPACE_SRGB;
1831 fmt->field = V4L2_FIELD_NONE;
1832}
1833
1834/*
1835 * ccdc_enum_mbus_code - Handle pixel format enumeration
1836 * @sd : pointer to v4l2 subdev structure
1837 * @fh : V4L2 subdev file handle
1838 * @code : pointer to v4l2_subdev_mbus_code_enum structure
1839 * return -EINVAL or zero on success
1840 */
1841static int ccdc_enum_mbus_code(struct v4l2_subdev *sd,
1842 struct v4l2_subdev_fh *fh,
1843 struct v4l2_subdev_mbus_code_enum *code)
1844{
1845 struct isp_ccdc_device *ccdc = v4l2_get_subdevdata(sd);
1846 struct v4l2_mbus_framefmt *format;
1847
1848 switch (code->pad) {
1849 case CCDC_PAD_SINK:
1850 if (code->index >= ARRAY_SIZE(ccdc_fmts))
1851 return -EINVAL;
1852
1853 code->code = ccdc_fmts[code->index];
1854 break;
1855
1856 case CCDC_PAD_SOURCE_OF:
1857 case CCDC_PAD_SOURCE_VP:
1858 /* No format conversion inside CCDC */
1859 if (code->index != 0)
1860 return -EINVAL;
1861
1862 format = __ccdc_get_format(ccdc, fh, CCDC_PAD_SINK,
1863 V4L2_SUBDEV_FORMAT_TRY);
1864
1865 code->code = format->code;
1866 break;
1867
1868 default:
1869 return -EINVAL;
1870 }
1871
1872 return 0;
1873}
1874
1875static int ccdc_enum_frame_size(struct v4l2_subdev *sd,
1876 struct v4l2_subdev_fh *fh,
1877 struct v4l2_subdev_frame_size_enum *fse)
1878{
1879 struct isp_ccdc_device *ccdc = v4l2_get_subdevdata(sd);
1880 struct v4l2_mbus_framefmt format;
1881
1882 if (fse->index != 0)
1883 return -EINVAL;
1884
1885 format.code = fse->code;
1886 format.width = 1;
1887 format.height = 1;
1888 ccdc_try_format(ccdc, fh, fse->pad, &format, V4L2_SUBDEV_FORMAT_TRY);
1889 fse->min_width = format.width;
1890 fse->min_height = format.height;
1891
1892 if (format.code != fse->code)
1893 return -EINVAL;
1894
1895 format.code = fse->code;
1896 format.width = -1;
1897 format.height = -1;
1898 ccdc_try_format(ccdc, fh, fse->pad, &format, V4L2_SUBDEV_FORMAT_TRY);
1899 fse->max_width = format.width;
1900 fse->max_height = format.height;
1901
1902 return 0;
1903}
1904
1905/*
1906 * ccdc_get_format - Retrieve the video format on a pad
1907 * @sd : ISP CCDC V4L2 subdevice
1908 * @fh : V4L2 subdev file handle
1909 * @fmt: Format
1910 *
1911 * Return 0 on success or -EINVAL if the pad is invalid or doesn't correspond
1912 * to the format type.
1913 */
1914static int ccdc_get_format(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh,
1915 struct v4l2_subdev_format *fmt)
1916{
1917 struct isp_ccdc_device *ccdc = v4l2_get_subdevdata(sd);
1918 struct v4l2_mbus_framefmt *format;
1919
1920 format = __ccdc_get_format(ccdc, fh, fmt->pad, fmt->which);
1921 if (format == NULL)
1922 return -EINVAL;
1923
1924 fmt->format = *format;
1925 return 0;
1926}
1927
1928/*
1929 * ccdc_set_format - Set the video format on a pad
1930 * @sd : ISP CCDC V4L2 subdevice
1931 * @fh : V4L2 subdev file handle
1932 * @fmt: Format
1933 *
1934 * Return 0 on success or -EINVAL if the pad is invalid or doesn't correspond
1935 * to the format type.
1936 */
1937static int ccdc_set_format(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh,
1938 struct v4l2_subdev_format *fmt)
1939{
1940 struct isp_ccdc_device *ccdc = v4l2_get_subdevdata(sd);
1941 struct v4l2_mbus_framefmt *format;
1942
1943 format = __ccdc_get_format(ccdc, fh, fmt->pad, fmt->which);
1944 if (format == NULL)
1945 return -EINVAL;
1946
1947 ccdc_try_format(ccdc, fh, fmt->pad, &fmt->format, fmt->which);
1948 *format = fmt->format;
1949
1950 /* Propagate the format from sink to source */
1951 if (fmt->pad == CCDC_PAD_SINK) {
1952 format = __ccdc_get_format(ccdc, fh, CCDC_PAD_SOURCE_OF,
1953 fmt->which);
1954 *format = fmt->format;
1955 ccdc_try_format(ccdc, fh, CCDC_PAD_SOURCE_OF, format,
1956 fmt->which);
1957
1958 format = __ccdc_get_format(ccdc, fh, CCDC_PAD_SOURCE_VP,
1959 fmt->which);
1960 *format = fmt->format;
1961 ccdc_try_format(ccdc, fh, CCDC_PAD_SOURCE_VP, format,
1962 fmt->which);
1963 }
1964
1965 return 0;
1966}
1967
1968/*
1969 * ccdc_init_formats - Initialize formats on all pads
1970 * @sd: ISP CCDC V4L2 subdevice
1971 * @fh: V4L2 subdev file handle
1972 *
1973 * Initialize all pad formats with default values. If fh is not NULL, try
1974 * formats are initialized on the file handle. Otherwise active formats are
1975 * initialized on the device.
1976 */
1977static int ccdc_init_formats(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh)
1978{
1979 struct v4l2_subdev_format format;
1980
1981 memset(&format, 0, sizeof(format));
1982 format.pad = CCDC_PAD_SINK;
1983 format.which = fh ? V4L2_SUBDEV_FORMAT_TRY : V4L2_SUBDEV_FORMAT_ACTIVE;
1984 format.format.code = V4L2_MBUS_FMT_SGRBG10_1X10;
1985 format.format.width = 4096;
1986 format.format.height = 4096;
1987 ccdc_set_format(sd, fh, &format);
1988
1989 return 0;
1990}
1991
1992/* V4L2 subdev core operations */
1993static const struct v4l2_subdev_core_ops ccdc_v4l2_core_ops = {
1994 .ioctl = ccdc_ioctl,
1995 .subscribe_event = ccdc_subscribe_event,
1996 .unsubscribe_event = ccdc_unsubscribe_event,
1997};
1998
1999/* V4L2 subdev video operations */
2000static const struct v4l2_subdev_video_ops ccdc_v4l2_video_ops = {
2001 .s_stream = ccdc_set_stream,
2002};
2003
2004/* V4L2 subdev pad operations */
2005static const struct v4l2_subdev_pad_ops ccdc_v4l2_pad_ops = {
2006 .enum_mbus_code = ccdc_enum_mbus_code,
2007 .enum_frame_size = ccdc_enum_frame_size,
2008 .get_fmt = ccdc_get_format,
2009 .set_fmt = ccdc_set_format,
2010};
2011
2012/* V4L2 subdev operations */
2013static const struct v4l2_subdev_ops ccdc_v4l2_ops = {
2014 .core = &ccdc_v4l2_core_ops,
2015 .video = &ccdc_v4l2_video_ops,
2016 .pad = &ccdc_v4l2_pad_ops,
2017};
2018
2019/* V4L2 subdev internal operations */
2020static const struct v4l2_subdev_internal_ops ccdc_v4l2_internal_ops = {
2021 .open = ccdc_init_formats,
2022};
2023
2024/* -----------------------------------------------------------------------------
2025 * Media entity operations
2026 */
2027
2028/*
2029 * ccdc_link_setup - Setup CCDC connections
2030 * @entity: CCDC media entity
2031 * @local: Pad at the local end of the link
2032 * @remote: Pad at the remote end of the link
2033 * @flags: Link flags
2034 *
2035 * return -EINVAL or zero on success
2036 */
2037static int ccdc_link_setup(struct media_entity *entity,
2038 const struct media_pad *local,
2039 const struct media_pad *remote, u32 flags)
2040{
2041 struct v4l2_subdev *sd = media_entity_to_v4l2_subdev(entity);
2042 struct isp_ccdc_device *ccdc = v4l2_get_subdevdata(sd);
2043 struct isp_device *isp = to_isp_device(ccdc);
2044
2045 switch (local->index | media_entity_type(remote->entity)) {
2046 case CCDC_PAD_SINK | MEDIA_ENT_T_V4L2_SUBDEV:
2047 /* Read from the sensor (parallel interface), CCP2, CSI2a or
2048 * CSI2c.
2049 */
2050 if (!(flags & MEDIA_LNK_FL_ENABLED)) {
2051 ccdc->input = CCDC_INPUT_NONE;
2052 break;
2053 }
2054
2055 if (ccdc->input != CCDC_INPUT_NONE)
2056 return -EBUSY;
2057
2058 if (remote->entity == &isp->isp_ccp2.subdev.entity)
2059 ccdc->input = CCDC_INPUT_CCP2B;
2060 else if (remote->entity == &isp->isp_csi2a.subdev.entity)
2061 ccdc->input = CCDC_INPUT_CSI2A;
2062 else if (remote->entity == &isp->isp_csi2c.subdev.entity)
2063 ccdc->input = CCDC_INPUT_CSI2C;
2064 else
2065 ccdc->input = CCDC_INPUT_PARALLEL;
2066
2067 break;
2068
2069 /*
2070 * The ISP core doesn't support pipelines with multiple video outputs.
2071 * Revisit this when it will be implemented, and return -EBUSY for now.
2072 */
2073
2074 case CCDC_PAD_SOURCE_VP | MEDIA_ENT_T_V4L2_SUBDEV:
2075 /* Write to preview engine, histogram and H3A. When none of
2076 * those links are active, the video port can be disabled.
2077 */
2078 if (flags & MEDIA_LNK_FL_ENABLED) {
2079 if (ccdc->output & ~CCDC_OUTPUT_PREVIEW)
2080 return -EBUSY;
2081 ccdc->output |= CCDC_OUTPUT_PREVIEW;
2082 } else {
2083 ccdc->output &= ~CCDC_OUTPUT_PREVIEW;
2084 }
2085 break;
2086
2087 case CCDC_PAD_SOURCE_OF | MEDIA_ENT_T_DEVNODE:
2088 /* Write to memory */
2089 if (flags & MEDIA_LNK_FL_ENABLED) {
2090 if (ccdc->output & ~CCDC_OUTPUT_MEMORY)
2091 return -EBUSY;
2092 ccdc->output |= CCDC_OUTPUT_MEMORY;
2093 } else {
2094 ccdc->output &= ~CCDC_OUTPUT_MEMORY;
2095 }
2096 break;
2097
2098 case CCDC_PAD_SOURCE_OF | MEDIA_ENT_T_V4L2_SUBDEV:
2099 /* Write to resizer */
2100 if (flags & MEDIA_LNK_FL_ENABLED) {
2101 if (ccdc->output & ~CCDC_OUTPUT_RESIZER)
2102 return -EBUSY;
2103 ccdc->output |= CCDC_OUTPUT_RESIZER;
2104 } else {
2105 ccdc->output &= ~CCDC_OUTPUT_RESIZER;
2106 }
2107 break;
2108
2109 default:
2110 return -EINVAL;
2111 }
2112
2113 return 0;
2114}
2115
2116/* media operations */
2117static const struct media_entity_operations ccdc_media_ops = {
2118 .link_setup = ccdc_link_setup,
2119};
2120
2121/*
2122 * ccdc_init_entities - Initialize V4L2 subdev and media entity
2123 * @ccdc: ISP CCDC module
2124 *
2125 * Return 0 on success and a negative error code on failure.
2126 */
2127static int ccdc_init_entities(struct isp_ccdc_device *ccdc)
2128{
2129 struct v4l2_subdev *sd = &ccdc->subdev;
2130 struct media_pad *pads = ccdc->pads;
2131 struct media_entity *me = &sd->entity;
2132 int ret;
2133
2134 ccdc->input = CCDC_INPUT_NONE;
2135
2136 v4l2_subdev_init(sd, &ccdc_v4l2_ops);
2137 sd->internal_ops = &ccdc_v4l2_internal_ops;
2138 strlcpy(sd->name, "OMAP3 ISP CCDC", sizeof(sd->name));
2139 sd->grp_id = 1 << 16; /* group ID for isp subdevs */
2140 v4l2_set_subdevdata(sd, ccdc);
2141 sd->flags |= V4L2_SUBDEV_FL_HAS_EVENTS | V4L2_SUBDEV_FL_HAS_DEVNODE;
2142 sd->nevents = OMAP3ISP_CCDC_NEVENTS;
2143
2144 pads[CCDC_PAD_SINK].flags = MEDIA_PAD_FL_SINK;
2145 pads[CCDC_PAD_SOURCE_VP].flags = MEDIA_PAD_FL_SOURCE;
2146 pads[CCDC_PAD_SOURCE_OF].flags = MEDIA_PAD_FL_SOURCE;
2147
2148 me->ops = &ccdc_media_ops;
2149 ret = media_entity_init(me, CCDC_PADS_NUM, pads, 0);
2150 if (ret < 0)
2151 return ret;
2152
2153 ccdc_init_formats(sd, NULL);
2154
2155 ccdc->video_out.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
2156 ccdc->video_out.ops = &ccdc_video_ops;
2157 ccdc->video_out.isp = to_isp_device(ccdc);
2158 ccdc->video_out.capture_mem = PAGE_ALIGN(4096 * 4096) * 3;
2159 ccdc->video_out.bpl_alignment = 32;
2160
2161 ret = omap3isp_video_init(&ccdc->video_out, "CCDC");
2162 if (ret < 0)
2163 return ret;
2164
2165 /* Connect the CCDC subdev to the video node. */
2166 ret = media_entity_create_link(&ccdc->subdev.entity, CCDC_PAD_SOURCE_OF,
2167 &ccdc->video_out.video.entity, 0, 0);
2168 if (ret < 0)
2169 return ret;
2170
2171 return 0;
2172}
2173
2174void omap3isp_ccdc_unregister_entities(struct isp_ccdc_device *ccdc)
2175{
2176 media_entity_cleanup(&ccdc->subdev.entity);
2177
2178 v4l2_device_unregister_subdev(&ccdc->subdev);
2179 omap3isp_video_unregister(&ccdc->video_out);
2180}
2181
2182int omap3isp_ccdc_register_entities(struct isp_ccdc_device *ccdc,
2183 struct v4l2_device *vdev)
2184{
2185 int ret;
2186
2187 /* Register the subdev and video node. */
2188 ret = v4l2_device_register_subdev(vdev, &ccdc->subdev);
2189 if (ret < 0)
2190 goto error;
2191
2192 ret = omap3isp_video_register(&ccdc->video_out, vdev);
2193 if (ret < 0)
2194 goto error;
2195
2196 return 0;
2197
2198error:
2199 omap3isp_ccdc_unregister_entities(ccdc);
2200 return ret;
2201}
2202
2203/* -----------------------------------------------------------------------------
2204 * ISP CCDC initialisation and cleanup
2205 */
2206
2207/*
2208 * omap3isp_ccdc_init - CCDC module initialization.
2209 * @dev: Device pointer specific to the OMAP3 ISP.
2210 *
2211 * TODO: Get the initialisation values from platform data.
2212 *
2213 * Return 0 on success or a negative error code otherwise.
2214 */
2215int omap3isp_ccdc_init(struct isp_device *isp)
2216{
2217 struct isp_ccdc_device *ccdc = &isp->isp_ccdc;
2218
2219 spin_lock_init(&ccdc->lock);
2220 init_waitqueue_head(&ccdc->wait);
2221 mutex_init(&ccdc->ioctl_lock);
2222
2223 ccdc->stopping = CCDC_STOP_NOT_REQUESTED;
2224
2225 INIT_WORK(&ccdc->lsc.table_work, ccdc_lsc_free_table_work);
2226 ccdc->lsc.state = LSC_STATE_STOPPED;
2227 INIT_LIST_HEAD(&ccdc->lsc.free_queue);
2228 spin_lock_init(&ccdc->lsc.req_lock);
2229
2230 ccdc->syncif.ccdc_mastermode = 0;
2231 ccdc->syncif.datapol = 0;
2232 ccdc->syncif.datsz = 0;
2233 ccdc->syncif.fldmode = 0;
2234 ccdc->syncif.fldout = 0;
2235 ccdc->syncif.fldpol = 0;
2236 ccdc->syncif.fldstat = 0;
2237 ccdc->syncif.hdpol = 0;
2238 ccdc->syncif.vdpol = 0;
2239
2240 ccdc->clamp.oblen = 0;
2241 ccdc->clamp.dcsubval = 0;
2242
2243 ccdc->vpcfg.pixelclk = 0;
2244
2245 ccdc->update = OMAP3ISP_CCDC_BLCLAMP;
2246 ccdc_apply_controls(ccdc);
2247
2248 return ccdc_init_entities(ccdc);
2249}
2250
2251/*
2252 * omap3isp_ccdc_cleanup - CCDC module cleanup.
2253 * @dev: Device pointer specific to the OMAP3 ISP.
2254 */
2255void omap3isp_ccdc_cleanup(struct isp_device *isp)
2256{
2257 struct isp_ccdc_device *ccdc = &isp->isp_ccdc;
2258
2259 /* Free LSC requests. As the CCDC is stopped there's no active request,
2260 * so only the pending request and the free queue need to be handled.
2261 */
2262 ccdc_lsc_free_request(ccdc, ccdc->lsc.request);
2263 cancel_work_sync(&ccdc->lsc.table_work);
2264 ccdc_lsc_free_queue(ccdc, &ccdc->lsc.free_queue);
2265
2266 if (ccdc->fpc.fpcaddr != 0)
2267 iommu_vfree(isp->iommu, ccdc->fpc.fpcaddr);
2268}
Linux kernel - Deliverables
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