4 * TI OMAP3 ISP - CCDC module
6 * Copyright (C) 2009-2010 Nokia Corporation
7 * Copyright (C) 2009 Texas Instruments, Inc.
9 * Contacts: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
10 * Sakari Ailus <sakari.ailus@iki.fi>
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.
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.
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
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>
33 #include <linux/sched.h>
34 #include <linux/slab.h>
35 #include <media/v4l2-event.h>
41 #define CCDC_MIN_WIDTH 32
42 #define CCDC_MIN_HEIGHT 32
44 static struct v4l2_mbus_framefmt *
45 __ccdc_get_format(struct isp_ccdc_device *ccdc, struct v4l2_subdev_fh *fh,
46 unsigned int pad, enum v4l2_subdev_format_whence which);
48 static const unsigned int ccdc_fmts[] = {
50 V4L2_MBUS_FMT_Y10_1X10,
51 V4L2_MBUS_FMT_Y12_1X12,
52 V4L2_MBUS_FMT_SGRBG8_1X8,
53 V4L2_MBUS_FMT_SRGGB8_1X8,
54 V4L2_MBUS_FMT_SBGGR8_1X8,
55 V4L2_MBUS_FMT_SGBRG8_1X8,
56 V4L2_MBUS_FMT_SGRBG10_1X10,
57 V4L2_MBUS_FMT_SRGGB10_1X10,
58 V4L2_MBUS_FMT_SBGGR10_1X10,
59 V4L2_MBUS_FMT_SGBRG10_1X10,
60 V4L2_MBUS_FMT_SGRBG12_1X12,
61 V4L2_MBUS_FMT_SRGGB12_1X12,
62 V4L2_MBUS_FMT_SBGGR12_1X12,
63 V4L2_MBUS_FMT_SGBRG12_1X12,
64 V4L2_MBUS_FMT_YUYV8_2X8,
65 V4L2_MBUS_FMT_UYVY8_2X8,
69 * ccdc_print_status - Print current CCDC Module register values.
70 * @ccdc: Pointer to ISP CCDC device.
72 * Also prints other debug information stored in the CCDC module.
74 #define CCDC_PRINT_REGISTER(isp, name)\
75 dev_dbg(isp->dev, "###CCDC " #name "=0x%08x\n", \
76 isp_reg_readl(isp, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_##name))
78 static void ccdc_print_status(struct isp_ccdc_device *ccdc)
80 struct isp_device *isp = to_isp_device(ccdc);
82 dev_dbg(isp->dev, "-------------CCDC Register dump-------------\n");
84 CCDC_PRINT_REGISTER(isp, PCR);
85 CCDC_PRINT_REGISTER(isp, SYN_MODE);
86 CCDC_PRINT_REGISTER(isp, HD_VD_WID);
87 CCDC_PRINT_REGISTER(isp, PIX_LINES);
88 CCDC_PRINT_REGISTER(isp, HORZ_INFO);
89 CCDC_PRINT_REGISTER(isp, VERT_START);
90 CCDC_PRINT_REGISTER(isp, VERT_LINES);
91 CCDC_PRINT_REGISTER(isp, CULLING);
92 CCDC_PRINT_REGISTER(isp, HSIZE_OFF);
93 CCDC_PRINT_REGISTER(isp, SDOFST);
94 CCDC_PRINT_REGISTER(isp, SDR_ADDR);
95 CCDC_PRINT_REGISTER(isp, CLAMP);
96 CCDC_PRINT_REGISTER(isp, DCSUB);
97 CCDC_PRINT_REGISTER(isp, COLPTN);
98 CCDC_PRINT_REGISTER(isp, BLKCMP);
99 CCDC_PRINT_REGISTER(isp, FPC);
100 CCDC_PRINT_REGISTER(isp, FPC_ADDR);
101 CCDC_PRINT_REGISTER(isp, VDINT);
102 CCDC_PRINT_REGISTER(isp, ALAW);
103 CCDC_PRINT_REGISTER(isp, REC656IF);
104 CCDC_PRINT_REGISTER(isp, CFG);
105 CCDC_PRINT_REGISTER(isp, FMTCFG);
106 CCDC_PRINT_REGISTER(isp, FMT_HORZ);
107 CCDC_PRINT_REGISTER(isp, FMT_VERT);
108 CCDC_PRINT_REGISTER(isp, PRGEVEN0);
109 CCDC_PRINT_REGISTER(isp, PRGEVEN1);
110 CCDC_PRINT_REGISTER(isp, PRGODD0);
111 CCDC_PRINT_REGISTER(isp, PRGODD1);
112 CCDC_PRINT_REGISTER(isp, VP_OUT);
113 CCDC_PRINT_REGISTER(isp, LSC_CONFIG);
114 CCDC_PRINT_REGISTER(isp, LSC_INITIAL);
115 CCDC_PRINT_REGISTER(isp, LSC_TABLE_BASE);
116 CCDC_PRINT_REGISTER(isp, LSC_TABLE_OFFSET);
118 dev_dbg(isp->dev, "--------------------------------------------\n");
122 * omap3isp_ccdc_busy - Get busy state of the CCDC.
123 * @ccdc: Pointer to ISP CCDC device.
125 int omap3isp_ccdc_busy(struct isp_ccdc_device *ccdc)
127 struct isp_device *isp = to_isp_device(ccdc);
129 return isp_reg_readl(isp, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_PCR) &
133 /* -----------------------------------------------------------------------------
134 * Lens Shading Compensation
138 * ccdc_lsc_validate_config - Check that LSC configuration is valid.
139 * @ccdc: Pointer to ISP CCDC device.
140 * @lsc_cfg: the LSC configuration to check.
142 * Returns 0 if the LSC configuration is valid, or -EINVAL if invalid.
144 static int ccdc_lsc_validate_config(struct isp_ccdc_device *ccdc,
145 struct omap3isp_ccdc_lsc_config *lsc_cfg)
147 struct isp_device *isp = to_isp_device(ccdc);
148 struct v4l2_mbus_framefmt *format;
149 unsigned int paxel_width, paxel_height;
150 unsigned int paxel_shift_x, paxel_shift_y;
151 unsigned int min_width, min_height, min_size;
152 unsigned int input_width, input_height;
154 paxel_shift_x = lsc_cfg->gain_mode_m;
155 paxel_shift_y = lsc_cfg->gain_mode_n;
157 if ((paxel_shift_x < 2) || (paxel_shift_x > 6) ||
158 (paxel_shift_y < 2) || (paxel_shift_y > 6)) {
159 dev_dbg(isp->dev, "CCDC: LSC: Invalid paxel size\n");
163 if (lsc_cfg->offset & 3) {
164 dev_dbg(isp->dev, "CCDC: LSC: Offset must be a multiple of "
169 if ((lsc_cfg->initial_x & 1) || (lsc_cfg->initial_y & 1)) {
170 dev_dbg(isp->dev, "CCDC: LSC: initial_x and y must be even\n");
174 format = __ccdc_get_format(ccdc, NULL, CCDC_PAD_SINK,
175 V4L2_SUBDEV_FORMAT_ACTIVE);
176 input_width = format->width;
177 input_height = format->height;
179 /* Calculate minimum bytesize for validation */
180 paxel_width = 1 << paxel_shift_x;
181 min_width = ((input_width + lsc_cfg->initial_x + paxel_width - 1)
182 >> paxel_shift_x) + 1;
184 paxel_height = 1 << paxel_shift_y;
185 min_height = ((input_height + lsc_cfg->initial_y + paxel_height - 1)
186 >> paxel_shift_y) + 1;
188 min_size = 4 * min_width * min_height;
189 if (min_size > lsc_cfg->size) {
190 dev_dbg(isp->dev, "CCDC: LSC: too small table\n");
193 if (lsc_cfg->offset < (min_width * 4)) {
194 dev_dbg(isp->dev, "CCDC: LSC: Offset is too small\n");
197 if ((lsc_cfg->size / lsc_cfg->offset) < min_height) {
198 dev_dbg(isp->dev, "CCDC: LSC: Wrong size/offset combination\n");
205 * ccdc_lsc_program_table - Program Lens Shading Compensation table address.
206 * @ccdc: Pointer to ISP CCDC device.
208 static void ccdc_lsc_program_table(struct isp_ccdc_device *ccdc,
211 isp_reg_writel(to_isp_device(ccdc), addr,
212 OMAP3_ISP_IOMEM_CCDC, ISPCCDC_LSC_TABLE_BASE);
216 * ccdc_lsc_setup_regs - Configures the lens shading compensation module
217 * @ccdc: Pointer to ISP CCDC device.
219 static void ccdc_lsc_setup_regs(struct isp_ccdc_device *ccdc,
220 struct omap3isp_ccdc_lsc_config *cfg)
222 struct isp_device *isp = to_isp_device(ccdc);
225 isp_reg_writel(isp, cfg->offset, OMAP3_ISP_IOMEM_CCDC,
226 ISPCCDC_LSC_TABLE_OFFSET);
229 reg |= cfg->gain_mode_n << ISPCCDC_LSC_GAIN_MODE_N_SHIFT;
230 reg |= cfg->gain_mode_m << ISPCCDC_LSC_GAIN_MODE_M_SHIFT;
231 reg |= cfg->gain_format << ISPCCDC_LSC_GAIN_FORMAT_SHIFT;
232 isp_reg_writel(isp, reg, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_LSC_CONFIG);
235 reg &= ~ISPCCDC_LSC_INITIAL_X_MASK;
236 reg |= cfg->initial_x << ISPCCDC_LSC_INITIAL_X_SHIFT;
237 reg &= ~ISPCCDC_LSC_INITIAL_Y_MASK;
238 reg |= cfg->initial_y << ISPCCDC_LSC_INITIAL_Y_SHIFT;
239 isp_reg_writel(isp, reg, OMAP3_ISP_IOMEM_CCDC,
240 ISPCCDC_LSC_INITIAL);
243 static int ccdc_lsc_wait_prefetch(struct isp_ccdc_device *ccdc)
245 struct isp_device *isp = to_isp_device(ccdc);
248 isp_reg_writel(isp, IRQ0STATUS_CCDC_LSC_PREF_COMP_IRQ,
249 OMAP3_ISP_IOMEM_MAIN, ISP_IRQ0STATUS);
252 for (wait = 0; wait < 1000; wait++) {
253 if (isp_reg_readl(isp, OMAP3_ISP_IOMEM_MAIN, ISP_IRQ0STATUS) &
254 IRQ0STATUS_CCDC_LSC_PREF_COMP_IRQ) {
255 isp_reg_writel(isp, IRQ0STATUS_CCDC_LSC_PREF_COMP_IRQ,
256 OMAP3_ISP_IOMEM_MAIN, ISP_IRQ0STATUS);
268 * __ccdc_lsc_enable - Enables/Disables the Lens Shading Compensation module.
269 * @ccdc: Pointer to ISP CCDC device.
270 * @enable: 0 Disables LSC, 1 Enables LSC.
272 static int __ccdc_lsc_enable(struct isp_ccdc_device *ccdc, int enable)
274 struct isp_device *isp = to_isp_device(ccdc);
275 const struct v4l2_mbus_framefmt *format =
276 __ccdc_get_format(ccdc, NULL, CCDC_PAD_SINK,
277 V4L2_SUBDEV_FORMAT_ACTIVE);
279 if ((format->code != V4L2_MBUS_FMT_SGRBG10_1X10) &&
280 (format->code != V4L2_MBUS_FMT_SRGGB10_1X10) &&
281 (format->code != V4L2_MBUS_FMT_SBGGR10_1X10) &&
282 (format->code != V4L2_MBUS_FMT_SGBRG10_1X10))
286 omap3isp_sbl_enable(isp, OMAP3_ISP_SBL_CCDC_LSC_READ);
288 isp_reg_clr_set(isp, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_LSC_CONFIG,
289 ISPCCDC_LSC_ENABLE, enable ? ISPCCDC_LSC_ENABLE : 0);
292 if (ccdc_lsc_wait_prefetch(ccdc) < 0) {
293 isp_reg_clr(isp, OMAP3_ISP_IOMEM_CCDC,
294 ISPCCDC_LSC_CONFIG, ISPCCDC_LSC_ENABLE);
295 ccdc->lsc.state = LSC_STATE_STOPPED;
296 dev_warn(to_device(ccdc), "LSC prefetch timeout\n");
299 ccdc->lsc.state = LSC_STATE_RUNNING;
301 ccdc->lsc.state = LSC_STATE_STOPPING;
307 static int ccdc_lsc_busy(struct isp_ccdc_device *ccdc)
309 struct isp_device *isp = to_isp_device(ccdc);
311 return isp_reg_readl(isp, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_LSC_CONFIG) &
315 /* __ccdc_lsc_configure - Apply a new configuration to the LSC engine
316 * @ccdc: Pointer to ISP CCDC device
317 * @req: New configuration request
319 * context: in_interrupt()
321 static int __ccdc_lsc_configure(struct isp_ccdc_device *ccdc,
322 struct ispccdc_lsc_config_req *req)
327 if (ccdc_lsc_validate_config(ccdc, &req->config) < 0) {
328 dev_dbg(to_device(ccdc), "Discard LSC configuration\n");
332 if (ccdc_lsc_busy(ccdc))
335 ccdc_lsc_setup_regs(ccdc, &req->config);
336 ccdc_lsc_program_table(ccdc, req->table.dma);
341 * ccdc_lsc_error_handler - Handle LSC prefetch error scenario.
342 * @ccdc: Pointer to ISP CCDC device.
344 * Disables LSC, and defers enablement to shadow registers update time.
346 static void ccdc_lsc_error_handler(struct isp_ccdc_device *ccdc)
348 struct isp_device *isp = to_isp_device(ccdc);
350 * From OMAP3 TRM: When this event is pending, the module
351 * goes into transparent mode (output =input). Normal
352 * operation can be resumed at the start of the next frame
354 * 1) Clearing this event
355 * 2) Disabling the LSC module
358 isp_reg_clr(isp, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_LSC_CONFIG,
360 ccdc->lsc.state = LSC_STATE_STOPPED;
363 static void ccdc_lsc_free_request(struct isp_ccdc_device *ccdc,
364 struct ispccdc_lsc_config_req *req)
366 struct isp_device *isp = to_isp_device(ccdc);
371 if (req->table.addr) {
372 sg_free_table(&req->table.sgt);
373 dma_free_coherent(isp->dev, req->config.size, req->table.addr,
380 static void ccdc_lsc_free_queue(struct isp_ccdc_device *ccdc,
381 struct list_head *queue)
383 struct ispccdc_lsc_config_req *req, *n;
386 spin_lock_irqsave(&ccdc->lsc.req_lock, flags);
387 list_for_each_entry_safe(req, n, queue, list) {
388 list_del(&req->list);
389 spin_unlock_irqrestore(&ccdc->lsc.req_lock, flags);
390 ccdc_lsc_free_request(ccdc, req);
391 spin_lock_irqsave(&ccdc->lsc.req_lock, flags);
393 spin_unlock_irqrestore(&ccdc->lsc.req_lock, flags);
396 static void ccdc_lsc_free_table_work(struct work_struct *work)
398 struct isp_ccdc_device *ccdc;
399 struct ispccdc_lsc *lsc;
401 lsc = container_of(work, struct ispccdc_lsc, table_work);
402 ccdc = container_of(lsc, struct isp_ccdc_device, lsc);
404 ccdc_lsc_free_queue(ccdc, &lsc->free_queue);
408 * ccdc_lsc_config - Configure the LSC module from a userspace request
410 * Store the request LSC configuration in the LSC engine request pointer. The
411 * configuration will be applied to the hardware when the CCDC will be enabled,
412 * or at the next LSC interrupt if the CCDC is already running.
414 static int ccdc_lsc_config(struct isp_ccdc_device *ccdc,
415 struct omap3isp_ccdc_update_config *config)
417 struct isp_device *isp = to_isp_device(ccdc);
418 struct ispccdc_lsc_config_req *req;
423 update = config->update &
424 (OMAP3ISP_CCDC_CONFIG_LSC | OMAP3ISP_CCDC_TBL_LSC);
428 if (update != (OMAP3ISP_CCDC_CONFIG_LSC | OMAP3ISP_CCDC_TBL_LSC)) {
429 dev_dbg(to_device(ccdc), "%s: Both LSC configuration and table "
430 "need to be supplied\n", __func__);
434 req = kzalloc(sizeof(*req), GFP_KERNEL);
438 if (config->flag & OMAP3ISP_CCDC_CONFIG_LSC) {
439 if (copy_from_user(&req->config, config->lsc_cfg,
440 sizeof(req->config))) {
447 req->table.addr = dma_alloc_coherent(isp->dev, req->config.size,
450 if (req->table.addr == NULL) {
455 ret = dma_get_sgtable(isp->dev, &req->table.sgt,
456 req->table.addr, req->table.dma,
461 dma_sync_sg_for_cpu(isp->dev, req->table.sgt.sgl,
462 req->table.sgt.nents, DMA_TO_DEVICE);
464 if (copy_from_user(req->table.addr, config->lsc,
470 dma_sync_sg_for_device(isp->dev, req->table.sgt.sgl,
471 req->table.sgt.nents, DMA_TO_DEVICE);
474 spin_lock_irqsave(&ccdc->lsc.req_lock, flags);
475 if (ccdc->lsc.request) {
476 list_add_tail(&ccdc->lsc.request->list, &ccdc->lsc.free_queue);
477 schedule_work(&ccdc->lsc.table_work);
479 ccdc->lsc.request = req;
480 spin_unlock_irqrestore(&ccdc->lsc.req_lock, flags);
486 ccdc_lsc_free_request(ccdc, req);
491 static inline int ccdc_lsc_is_configured(struct isp_ccdc_device *ccdc)
495 spin_lock_irqsave(&ccdc->lsc.req_lock, flags);
496 if (ccdc->lsc.active) {
497 spin_unlock_irqrestore(&ccdc->lsc.req_lock, flags);
500 spin_unlock_irqrestore(&ccdc->lsc.req_lock, flags);
504 static int ccdc_lsc_enable(struct isp_ccdc_device *ccdc)
506 struct ispccdc_lsc *lsc = &ccdc->lsc;
508 if (lsc->state != LSC_STATE_STOPPED)
512 list_add_tail(&lsc->active->list, &lsc->free_queue);
516 if (__ccdc_lsc_configure(ccdc, lsc->request) < 0) {
517 omap3isp_sbl_disable(to_isp_device(ccdc),
518 OMAP3_ISP_SBL_CCDC_LSC_READ);
519 list_add_tail(&lsc->request->list, &lsc->free_queue);
524 lsc->active = lsc->request;
526 __ccdc_lsc_enable(ccdc, 1);
529 if (!list_empty(&lsc->free_queue))
530 schedule_work(&lsc->table_work);
535 /* -----------------------------------------------------------------------------
536 * Parameters configuration
540 * ccdc_configure_clamp - Configure optical-black or digital clamping
541 * @ccdc: Pointer to ISP CCDC device.
543 * The CCDC performs either optical-black or digital clamp. Configure and enable
544 * the selected clamp method.
546 static void ccdc_configure_clamp(struct isp_ccdc_device *ccdc)
548 struct isp_device *isp = to_isp_device(ccdc);
552 clamp = ccdc->clamp.obgain << ISPCCDC_CLAMP_OBGAIN_SHIFT;
553 clamp |= ccdc->clamp.oblen << ISPCCDC_CLAMP_OBSLEN_SHIFT;
554 clamp |= ccdc->clamp.oblines << ISPCCDC_CLAMP_OBSLN_SHIFT;
555 clamp |= ccdc->clamp.obstpixel << ISPCCDC_CLAMP_OBST_SHIFT;
556 isp_reg_writel(isp, clamp, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_CLAMP);
558 isp_reg_writel(isp, ccdc->clamp.dcsubval,
559 OMAP3_ISP_IOMEM_CCDC, ISPCCDC_DCSUB);
562 isp_reg_clr_set(isp, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_CLAMP,
563 ISPCCDC_CLAMP_CLAMPEN,
564 ccdc->obclamp ? ISPCCDC_CLAMP_CLAMPEN : 0);
568 * ccdc_configure_fpc - Configure Faulty Pixel Correction
569 * @ccdc: Pointer to ISP CCDC device.
571 static void ccdc_configure_fpc(struct isp_ccdc_device *ccdc)
573 struct isp_device *isp = to_isp_device(ccdc);
575 isp_reg_clr(isp, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_FPC, ISPCCDC_FPC_FPCEN);
580 isp_reg_writel(isp, ccdc->fpc.dma, OMAP3_ISP_IOMEM_CCDC,
582 /* The FPNUM field must be set before enabling FPC. */
583 isp_reg_writel(isp, (ccdc->fpc.fpnum << ISPCCDC_FPC_FPNUM_SHIFT),
584 OMAP3_ISP_IOMEM_CCDC, ISPCCDC_FPC);
585 isp_reg_writel(isp, (ccdc->fpc.fpnum << ISPCCDC_FPC_FPNUM_SHIFT) |
586 ISPCCDC_FPC_FPCEN, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_FPC);
590 * ccdc_configure_black_comp - Configure Black Level Compensation.
591 * @ccdc: Pointer to ISP CCDC device.
593 static void ccdc_configure_black_comp(struct isp_ccdc_device *ccdc)
595 struct isp_device *isp = to_isp_device(ccdc);
598 blcomp = ccdc->blcomp.b_mg << ISPCCDC_BLKCMP_B_MG_SHIFT;
599 blcomp |= ccdc->blcomp.gb_g << ISPCCDC_BLKCMP_GB_G_SHIFT;
600 blcomp |= ccdc->blcomp.gr_cy << ISPCCDC_BLKCMP_GR_CY_SHIFT;
601 blcomp |= ccdc->blcomp.r_ye << ISPCCDC_BLKCMP_R_YE_SHIFT;
603 isp_reg_writel(isp, blcomp, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_BLKCMP);
607 * ccdc_configure_lpf - Configure Low-Pass Filter (LPF).
608 * @ccdc: Pointer to ISP CCDC device.
610 static void ccdc_configure_lpf(struct isp_ccdc_device *ccdc)
612 struct isp_device *isp = to_isp_device(ccdc);
614 isp_reg_clr_set(isp, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_SYN_MODE,
615 ISPCCDC_SYN_MODE_LPF,
616 ccdc->lpf ? ISPCCDC_SYN_MODE_LPF : 0);
620 * ccdc_configure_alaw - Configure A-law compression.
621 * @ccdc: Pointer to ISP CCDC device.
623 static void ccdc_configure_alaw(struct isp_ccdc_device *ccdc)
625 struct isp_device *isp = to_isp_device(ccdc);
626 const struct isp_format_info *info;
629 info = omap3isp_video_format_info(ccdc->formats[CCDC_PAD_SINK].code);
631 switch (info->width) {
636 alaw = ISPCCDC_ALAW_GWDI_9_0;
639 alaw = ISPCCDC_ALAW_GWDI_10_1;
642 alaw = ISPCCDC_ALAW_GWDI_11_2;
645 alaw = ISPCCDC_ALAW_GWDI_12_3;
650 alaw |= ISPCCDC_ALAW_CCDTBL;
652 isp_reg_writel(isp, alaw, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_ALAW);
656 * ccdc_config_imgattr - Configure sensor image specific attributes.
657 * @ccdc: Pointer to ISP CCDC device.
658 * @colptn: Color pattern of the sensor.
660 static void ccdc_config_imgattr(struct isp_ccdc_device *ccdc, u32 colptn)
662 struct isp_device *isp = to_isp_device(ccdc);
664 isp_reg_writel(isp, colptn, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_COLPTN);
668 * ccdc_config - Set CCDC configuration from userspace
669 * @ccdc: Pointer to ISP CCDC device.
670 * @ccdc_struct: Structure containing CCDC configuration sent from userspace.
672 * Returns 0 if successful, -EINVAL if the pointer to the configuration
673 * structure is null, or the copy_from_user function fails to copy user space
674 * memory to kernel space memory.
676 static int ccdc_config(struct isp_ccdc_device *ccdc,
677 struct omap3isp_ccdc_update_config *ccdc_struct)
679 struct isp_device *isp = to_isp_device(ccdc);
682 spin_lock_irqsave(&ccdc->lock, flags);
683 ccdc->shadow_update = 1;
684 spin_unlock_irqrestore(&ccdc->lock, flags);
686 if (OMAP3ISP_CCDC_ALAW & ccdc_struct->update) {
687 ccdc->alaw = !!(OMAP3ISP_CCDC_ALAW & ccdc_struct->flag);
688 ccdc->update |= OMAP3ISP_CCDC_ALAW;
691 if (OMAP3ISP_CCDC_LPF & ccdc_struct->update) {
692 ccdc->lpf = !!(OMAP3ISP_CCDC_LPF & ccdc_struct->flag);
693 ccdc->update |= OMAP3ISP_CCDC_LPF;
696 if (OMAP3ISP_CCDC_BLCLAMP & ccdc_struct->update) {
697 if (copy_from_user(&ccdc->clamp, ccdc_struct->bclamp,
698 sizeof(ccdc->clamp))) {
699 ccdc->shadow_update = 0;
703 ccdc->obclamp = !!(OMAP3ISP_CCDC_BLCLAMP & ccdc_struct->flag);
704 ccdc->update |= OMAP3ISP_CCDC_BLCLAMP;
707 if (OMAP3ISP_CCDC_BCOMP & ccdc_struct->update) {
708 if (copy_from_user(&ccdc->blcomp, ccdc_struct->blcomp,
709 sizeof(ccdc->blcomp))) {
710 ccdc->shadow_update = 0;
714 ccdc->update |= OMAP3ISP_CCDC_BCOMP;
717 ccdc->shadow_update = 0;
719 if (OMAP3ISP_CCDC_FPC & ccdc_struct->update) {
720 struct omap3isp_ccdc_fpc fpc;
721 struct ispccdc_fpc fpc_old = { .addr = NULL, };
722 struct ispccdc_fpc fpc_new;
725 if (ccdc->state != ISP_PIPELINE_STREAM_STOPPED)
728 ccdc->fpc_en = !!(OMAP3ISP_CCDC_FPC & ccdc_struct->flag);
731 if (copy_from_user(&fpc, ccdc_struct->fpc, sizeof(fpc)))
734 size = fpc.fpnum * 4;
737 * The table address must be 64-bytes aligned, which is
738 * guaranteed by dma_alloc_coherent().
740 fpc_new.fpnum = fpc.fpnum;
741 fpc_new.addr = dma_alloc_coherent(isp->dev, size,
744 if (fpc_new.addr == NULL)
747 if (copy_from_user(fpc_new.addr,
748 (__force void __user *)fpc.fpcaddr,
750 dma_free_coherent(isp->dev, size, fpc_new.addr,
759 ccdc_configure_fpc(ccdc);
761 if (fpc_old.addr != NULL)
762 dma_free_coherent(isp->dev, fpc_old.fpnum * 4,
763 fpc_old.addr, fpc_old.dma);
766 return ccdc_lsc_config(ccdc, ccdc_struct);
769 static void ccdc_apply_controls(struct isp_ccdc_device *ccdc)
771 if (ccdc->update & OMAP3ISP_CCDC_ALAW) {
772 ccdc_configure_alaw(ccdc);
773 ccdc->update &= ~OMAP3ISP_CCDC_ALAW;
776 if (ccdc->update & OMAP3ISP_CCDC_LPF) {
777 ccdc_configure_lpf(ccdc);
778 ccdc->update &= ~OMAP3ISP_CCDC_LPF;
781 if (ccdc->update & OMAP3ISP_CCDC_BLCLAMP) {
782 ccdc_configure_clamp(ccdc);
783 ccdc->update &= ~OMAP3ISP_CCDC_BLCLAMP;
786 if (ccdc->update & OMAP3ISP_CCDC_BCOMP) {
787 ccdc_configure_black_comp(ccdc);
788 ccdc->update &= ~OMAP3ISP_CCDC_BCOMP;
793 * omap3isp_ccdc_restore_context - Restore values of the CCDC module registers
794 * @isp: Pointer to ISP device
796 void omap3isp_ccdc_restore_context(struct isp_device *isp)
798 struct isp_ccdc_device *ccdc = &isp->isp_ccdc;
800 isp_reg_set(isp, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_CFG, ISPCCDC_CFG_VDLC);
802 ccdc->update = OMAP3ISP_CCDC_ALAW | OMAP3ISP_CCDC_LPF
803 | OMAP3ISP_CCDC_BLCLAMP | OMAP3ISP_CCDC_BCOMP;
804 ccdc_apply_controls(ccdc);
805 ccdc_configure_fpc(ccdc);
808 /* -----------------------------------------------------------------------------
809 * Format- and pipeline-related configuration helpers
813 * ccdc_config_vp - Configure the Video Port.
814 * @ccdc: Pointer to ISP CCDC device.
816 static void ccdc_config_vp(struct isp_ccdc_device *ccdc)
818 struct isp_pipeline *pipe = to_isp_pipeline(&ccdc->subdev.entity);
819 struct isp_device *isp = to_isp_device(ccdc);
820 const struct isp_format_info *info;
821 unsigned long l3_ick = pipe->l3_ick;
822 unsigned int max_div = isp->revision == ISP_REVISION_15_0 ? 64 : 8;
823 unsigned int div = 0;
826 fmtcfg_vp = isp_reg_readl(isp, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_FMTCFG)
827 & ~(ISPCCDC_FMTCFG_VPIN_MASK | ISPCCDC_FMTCFG_VPIF_FRQ_MASK);
829 info = omap3isp_video_format_info(ccdc->formats[CCDC_PAD_SINK].code);
831 switch (info->width) {
834 fmtcfg_vp |= ISPCCDC_FMTCFG_VPIN_9_0;
837 fmtcfg_vp |= ISPCCDC_FMTCFG_VPIN_10_1;
840 fmtcfg_vp |= ISPCCDC_FMTCFG_VPIN_11_2;
843 fmtcfg_vp |= ISPCCDC_FMTCFG_VPIN_12_3;
848 div = DIV_ROUND_UP(l3_ick, pipe->max_rate);
849 else if (pipe->external_rate)
850 div = l3_ick / pipe->external_rate;
852 div = clamp(div, 2U, max_div);
853 fmtcfg_vp |= (div - 2) << ISPCCDC_FMTCFG_VPIF_FRQ_SHIFT;
855 isp_reg_writel(isp, fmtcfg_vp, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_FMTCFG);
859 * ccdc_enable_vp - Enable Video Port.
860 * @ccdc: Pointer to ISP CCDC device.
861 * @enable: 0 Disables VP, 1 Enables VP
863 * This is needed for outputting image to Preview, H3A and HIST ISP submodules.
865 static void ccdc_enable_vp(struct isp_ccdc_device *ccdc, u8 enable)
867 struct isp_device *isp = to_isp_device(ccdc);
869 isp_reg_clr_set(isp, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_FMTCFG,
870 ISPCCDC_FMTCFG_VPEN, enable ? ISPCCDC_FMTCFG_VPEN : 0);
874 * ccdc_config_outlineoffset - Configure memory saving output line offset
875 * @ccdc: Pointer to ISP CCDC device.
876 * @offset: Address offset to start a new line. Must be twice the
877 * Output width and aligned on 32 byte boundary
878 * @oddeven: Specifies the odd/even line pattern to be chosen to store the
880 * @numlines: Set the value 0-3 for +1-4lines, 4-7 for -1-4lines.
882 * - Configures the output line offset when stored in memory
883 * - Sets the odd/even line pattern to store the output
884 * (EVENEVEN (1), ODDEVEN (2), EVENODD (3), ODDODD (4))
885 * - Configures the number of even and odd line fields in case of rearranging
888 static void ccdc_config_outlineoffset(struct isp_ccdc_device *ccdc,
889 u32 offset, u8 oddeven, u8 numlines)
891 struct isp_device *isp = to_isp_device(ccdc);
893 isp_reg_writel(isp, offset & 0xffff,
894 OMAP3_ISP_IOMEM_CCDC, ISPCCDC_HSIZE_OFF);
896 isp_reg_clr(isp, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_SDOFST,
897 ISPCCDC_SDOFST_FINV);
899 isp_reg_clr(isp, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_SDOFST,
900 ISPCCDC_SDOFST_FOFST_4L);
904 isp_reg_set(isp, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_SDOFST,
905 (numlines & 0x7) << ISPCCDC_SDOFST_LOFST0_SHIFT);
908 isp_reg_set(isp, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_SDOFST,
909 (numlines & 0x7) << ISPCCDC_SDOFST_LOFST1_SHIFT);
912 isp_reg_set(isp, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_SDOFST,
913 (numlines & 0x7) << ISPCCDC_SDOFST_LOFST2_SHIFT);
916 isp_reg_set(isp, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_SDOFST,
917 (numlines & 0x7) << ISPCCDC_SDOFST_LOFST3_SHIFT);
925 * ccdc_set_outaddr - Set memory address to save output image
926 * @ccdc: Pointer to ISP CCDC device.
927 * @addr: ISP MMU Mapped 32-bit memory address aligned on 32 byte boundary.
929 * Sets the memory address where the output will be saved.
931 static void ccdc_set_outaddr(struct isp_ccdc_device *ccdc, u32 addr)
933 struct isp_device *isp = to_isp_device(ccdc);
935 isp_reg_writel(isp, addr, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_SDR_ADDR);
939 * omap3isp_ccdc_max_rate - Calculate maximum input data rate based on the input
940 * @ccdc: Pointer to ISP CCDC device.
941 * @max_rate: Maximum calculated data rate.
943 * Returns in *max_rate less value between calculated and passed
945 void omap3isp_ccdc_max_rate(struct isp_ccdc_device *ccdc,
946 unsigned int *max_rate)
948 struct isp_pipeline *pipe = to_isp_pipeline(&ccdc->subdev.entity);
955 * TRM says that for parallel sensors the maximum data rate
956 * should be 90% form L3/2 clock, otherwise just L3/2.
958 if (ccdc->input == CCDC_INPUT_PARALLEL)
959 rate = pipe->l3_ick / 2 * 9 / 10;
961 rate = pipe->l3_ick / 2;
963 *max_rate = min(*max_rate, rate);
967 * ccdc_config_sync_if - Set CCDC sync interface configuration
968 * @ccdc: Pointer to ISP CCDC device.
969 * @pdata: Parallel interface platform data (may be NULL)
970 * @data_size: Data size
972 static void ccdc_config_sync_if(struct isp_ccdc_device *ccdc,
973 struct isp_parallel_platform_data *pdata,
974 unsigned int data_size)
976 struct isp_device *isp = to_isp_device(ccdc);
977 const struct v4l2_mbus_framefmt *format;
978 u32 syn_mode = ISPCCDC_SYN_MODE_VDHDEN;
980 format = &ccdc->formats[CCDC_PAD_SINK];
982 if (format->code == V4L2_MBUS_FMT_YUYV8_2X8 ||
983 format->code == V4L2_MBUS_FMT_UYVY8_2X8) {
984 /* The bridge is enabled for YUV8 formats. Configure the input
987 syn_mode |= ISPCCDC_SYN_MODE_INPMOD_YCBCR16;
992 syn_mode |= ISPCCDC_SYN_MODE_DATSIZ_8;
995 syn_mode |= ISPCCDC_SYN_MODE_DATSIZ_10;
998 syn_mode |= ISPCCDC_SYN_MODE_DATSIZ_11;
1001 syn_mode |= ISPCCDC_SYN_MODE_DATSIZ_12;
1005 if (pdata && pdata->data_pol)
1006 syn_mode |= ISPCCDC_SYN_MODE_DATAPOL;
1008 if (pdata && pdata->hs_pol)
1009 syn_mode |= ISPCCDC_SYN_MODE_HDPOL;
1011 if (pdata && pdata->vs_pol)
1012 syn_mode |= ISPCCDC_SYN_MODE_VDPOL;
1014 isp_reg_writel(isp, syn_mode, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_SYN_MODE);
1016 /* The CCDC_CFG.Y8POS bit is used in YCbCr8 input mode only. The
1017 * hardware seems to ignore it in all other input modes.
1019 if (format->code == V4L2_MBUS_FMT_UYVY8_2X8)
1020 isp_reg_set(isp, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_CFG,
1023 isp_reg_clr(isp, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_CFG,
1026 isp_reg_clr(isp, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_REC656IF,
1027 ISPCCDC_REC656IF_R656ON);
1030 /* CCDC formats descriptions */
1031 static const u32 ccdc_sgrbg_pattern =
1032 ISPCCDC_COLPTN_Gr_Cy << ISPCCDC_COLPTN_CP0PLC0_SHIFT |
1033 ISPCCDC_COLPTN_R_Ye << ISPCCDC_COLPTN_CP0PLC1_SHIFT |
1034 ISPCCDC_COLPTN_Gr_Cy << ISPCCDC_COLPTN_CP0PLC2_SHIFT |
1035 ISPCCDC_COLPTN_R_Ye << ISPCCDC_COLPTN_CP0PLC3_SHIFT |
1036 ISPCCDC_COLPTN_B_Mg << ISPCCDC_COLPTN_CP1PLC0_SHIFT |
1037 ISPCCDC_COLPTN_Gb_G << ISPCCDC_COLPTN_CP1PLC1_SHIFT |
1038 ISPCCDC_COLPTN_B_Mg << ISPCCDC_COLPTN_CP1PLC2_SHIFT |
1039 ISPCCDC_COLPTN_Gb_G << ISPCCDC_COLPTN_CP1PLC3_SHIFT |
1040 ISPCCDC_COLPTN_Gr_Cy << ISPCCDC_COLPTN_CP2PLC0_SHIFT |
1041 ISPCCDC_COLPTN_R_Ye << ISPCCDC_COLPTN_CP2PLC1_SHIFT |
1042 ISPCCDC_COLPTN_Gr_Cy << ISPCCDC_COLPTN_CP2PLC2_SHIFT |
1043 ISPCCDC_COLPTN_R_Ye << ISPCCDC_COLPTN_CP2PLC3_SHIFT |
1044 ISPCCDC_COLPTN_B_Mg << ISPCCDC_COLPTN_CP3PLC0_SHIFT |
1045 ISPCCDC_COLPTN_Gb_G << ISPCCDC_COLPTN_CP3PLC1_SHIFT |
1046 ISPCCDC_COLPTN_B_Mg << ISPCCDC_COLPTN_CP3PLC2_SHIFT |
1047 ISPCCDC_COLPTN_Gb_G << ISPCCDC_COLPTN_CP3PLC3_SHIFT;
1049 static const u32 ccdc_srggb_pattern =
1050 ISPCCDC_COLPTN_R_Ye << ISPCCDC_COLPTN_CP0PLC0_SHIFT |
1051 ISPCCDC_COLPTN_Gr_Cy << ISPCCDC_COLPTN_CP0PLC1_SHIFT |
1052 ISPCCDC_COLPTN_R_Ye << ISPCCDC_COLPTN_CP0PLC2_SHIFT |
1053 ISPCCDC_COLPTN_Gr_Cy << ISPCCDC_COLPTN_CP0PLC3_SHIFT |
1054 ISPCCDC_COLPTN_Gb_G << ISPCCDC_COLPTN_CP1PLC0_SHIFT |
1055 ISPCCDC_COLPTN_B_Mg << ISPCCDC_COLPTN_CP1PLC1_SHIFT |
1056 ISPCCDC_COLPTN_Gb_G << ISPCCDC_COLPTN_CP1PLC2_SHIFT |
1057 ISPCCDC_COLPTN_B_Mg << ISPCCDC_COLPTN_CP1PLC3_SHIFT |
1058 ISPCCDC_COLPTN_R_Ye << ISPCCDC_COLPTN_CP2PLC0_SHIFT |
1059 ISPCCDC_COLPTN_Gr_Cy << ISPCCDC_COLPTN_CP2PLC1_SHIFT |
1060 ISPCCDC_COLPTN_R_Ye << ISPCCDC_COLPTN_CP2PLC2_SHIFT |
1061 ISPCCDC_COLPTN_Gr_Cy << ISPCCDC_COLPTN_CP2PLC3_SHIFT |
1062 ISPCCDC_COLPTN_Gb_G << ISPCCDC_COLPTN_CP3PLC0_SHIFT |
1063 ISPCCDC_COLPTN_B_Mg << ISPCCDC_COLPTN_CP3PLC1_SHIFT |
1064 ISPCCDC_COLPTN_Gb_G << ISPCCDC_COLPTN_CP3PLC2_SHIFT |
1065 ISPCCDC_COLPTN_B_Mg << ISPCCDC_COLPTN_CP3PLC3_SHIFT;
1067 static const u32 ccdc_sbggr_pattern =
1068 ISPCCDC_COLPTN_B_Mg << ISPCCDC_COLPTN_CP0PLC0_SHIFT |
1069 ISPCCDC_COLPTN_Gb_G << ISPCCDC_COLPTN_CP0PLC1_SHIFT |
1070 ISPCCDC_COLPTN_B_Mg << ISPCCDC_COLPTN_CP0PLC2_SHIFT |
1071 ISPCCDC_COLPTN_Gb_G << ISPCCDC_COLPTN_CP0PLC3_SHIFT |
1072 ISPCCDC_COLPTN_Gr_Cy << ISPCCDC_COLPTN_CP1PLC0_SHIFT |
1073 ISPCCDC_COLPTN_R_Ye << ISPCCDC_COLPTN_CP1PLC1_SHIFT |
1074 ISPCCDC_COLPTN_Gr_Cy << ISPCCDC_COLPTN_CP1PLC2_SHIFT |
1075 ISPCCDC_COLPTN_R_Ye << ISPCCDC_COLPTN_CP1PLC3_SHIFT |
1076 ISPCCDC_COLPTN_B_Mg << ISPCCDC_COLPTN_CP2PLC0_SHIFT |
1077 ISPCCDC_COLPTN_Gb_G << ISPCCDC_COLPTN_CP2PLC1_SHIFT |
1078 ISPCCDC_COLPTN_B_Mg << ISPCCDC_COLPTN_CP2PLC2_SHIFT |
1079 ISPCCDC_COLPTN_Gb_G << ISPCCDC_COLPTN_CP2PLC3_SHIFT |
1080 ISPCCDC_COLPTN_Gr_Cy << ISPCCDC_COLPTN_CP3PLC0_SHIFT |
1081 ISPCCDC_COLPTN_R_Ye << ISPCCDC_COLPTN_CP3PLC1_SHIFT |
1082 ISPCCDC_COLPTN_Gr_Cy << ISPCCDC_COLPTN_CP3PLC2_SHIFT |
1083 ISPCCDC_COLPTN_R_Ye << ISPCCDC_COLPTN_CP3PLC3_SHIFT;
1085 static const u32 ccdc_sgbrg_pattern =
1086 ISPCCDC_COLPTN_Gb_G << ISPCCDC_COLPTN_CP0PLC0_SHIFT |
1087 ISPCCDC_COLPTN_B_Mg << ISPCCDC_COLPTN_CP0PLC1_SHIFT |
1088 ISPCCDC_COLPTN_Gb_G << ISPCCDC_COLPTN_CP0PLC2_SHIFT |
1089 ISPCCDC_COLPTN_B_Mg << ISPCCDC_COLPTN_CP0PLC3_SHIFT |
1090 ISPCCDC_COLPTN_R_Ye << ISPCCDC_COLPTN_CP1PLC0_SHIFT |
1091 ISPCCDC_COLPTN_Gr_Cy << ISPCCDC_COLPTN_CP1PLC1_SHIFT |
1092 ISPCCDC_COLPTN_R_Ye << ISPCCDC_COLPTN_CP1PLC2_SHIFT |
1093 ISPCCDC_COLPTN_Gr_Cy << ISPCCDC_COLPTN_CP1PLC3_SHIFT |
1094 ISPCCDC_COLPTN_Gb_G << ISPCCDC_COLPTN_CP2PLC0_SHIFT |
1095 ISPCCDC_COLPTN_B_Mg << ISPCCDC_COLPTN_CP2PLC1_SHIFT |
1096 ISPCCDC_COLPTN_Gb_G << ISPCCDC_COLPTN_CP2PLC2_SHIFT |
1097 ISPCCDC_COLPTN_B_Mg << ISPCCDC_COLPTN_CP2PLC3_SHIFT |
1098 ISPCCDC_COLPTN_R_Ye << ISPCCDC_COLPTN_CP3PLC0_SHIFT |
1099 ISPCCDC_COLPTN_Gr_Cy << ISPCCDC_COLPTN_CP3PLC1_SHIFT |
1100 ISPCCDC_COLPTN_R_Ye << ISPCCDC_COLPTN_CP3PLC2_SHIFT |
1101 ISPCCDC_COLPTN_Gr_Cy << ISPCCDC_COLPTN_CP3PLC3_SHIFT;
1103 static void ccdc_configure(struct isp_ccdc_device *ccdc)
1105 struct isp_device *isp = to_isp_device(ccdc);
1106 struct isp_parallel_platform_data *pdata = NULL;
1107 struct v4l2_subdev *sensor;
1108 struct v4l2_mbus_framefmt *format;
1109 const struct v4l2_rect *crop;
1110 const struct isp_format_info *fmt_info;
1111 struct v4l2_subdev_format fmt_src;
1112 unsigned int depth_out;
1113 unsigned int depth_in = 0;
1114 struct media_pad *pad;
1115 unsigned long flags;
1116 unsigned int bridge;
1121 pad = media_entity_remote_pad(&ccdc->pads[CCDC_PAD_SINK]);
1122 sensor = media_entity_to_v4l2_subdev(pad->entity);
1123 if (ccdc->input == CCDC_INPUT_PARALLEL)
1124 pdata = &((struct isp_v4l2_subdevs_group *)sensor->host_priv)
1127 /* Compute the lane shifter shift value and enable the bridge when the
1128 * input format is YUV.
1130 fmt_src.pad = pad->index;
1131 fmt_src.which = V4L2_SUBDEV_FORMAT_ACTIVE;
1132 if (!v4l2_subdev_call(sensor, pad, get_fmt, NULL, &fmt_src)) {
1133 fmt_info = omap3isp_video_format_info(fmt_src.format.code);
1134 depth_in = fmt_info->width;
1137 fmt_info = omap3isp_video_format_info
1138 (isp->isp_ccdc.formats[CCDC_PAD_SINK].code);
1139 depth_out = fmt_info->width;
1140 shift = depth_in - depth_out;
1142 if (fmt_info->code == V4L2_MBUS_FMT_YUYV8_2X8)
1143 bridge = ISPCTRL_PAR_BRIDGE_LENDIAN;
1144 else if (fmt_info->code == V4L2_MBUS_FMT_UYVY8_2X8)
1145 bridge = ISPCTRL_PAR_BRIDGE_BENDIAN;
1147 bridge = ISPCTRL_PAR_BRIDGE_DISABLE;
1149 omap3isp_configure_bridge(isp, ccdc->input, pdata, shift, bridge);
1151 ccdc_config_sync_if(ccdc, pdata, depth_out);
1153 syn_mode = isp_reg_readl(isp, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_SYN_MODE);
1155 /* Use the raw, unprocessed data when writing to memory. The H3A and
1156 * histogram modules are still fed with lens shading corrected data.
1158 syn_mode &= ~ISPCCDC_SYN_MODE_VP2SDR;
1160 if (ccdc->output & CCDC_OUTPUT_MEMORY)
1161 syn_mode |= ISPCCDC_SYN_MODE_WEN;
1163 syn_mode &= ~ISPCCDC_SYN_MODE_WEN;
1165 if (ccdc->output & CCDC_OUTPUT_RESIZER)
1166 syn_mode |= ISPCCDC_SYN_MODE_SDR2RSZ;
1168 syn_mode &= ~ISPCCDC_SYN_MODE_SDR2RSZ;
1171 format = &ccdc->formats[CCDC_PAD_SINK];
1174 switch (format->code) {
1175 case V4L2_MBUS_FMT_SRGGB10_1X10:
1176 case V4L2_MBUS_FMT_SRGGB12_1X12:
1177 ccdc_pattern = ccdc_srggb_pattern;
1179 case V4L2_MBUS_FMT_SBGGR10_1X10:
1180 case V4L2_MBUS_FMT_SBGGR12_1X12:
1181 ccdc_pattern = ccdc_sbggr_pattern;
1183 case V4L2_MBUS_FMT_SGBRG10_1X10:
1184 case V4L2_MBUS_FMT_SGBRG12_1X12:
1185 ccdc_pattern = ccdc_sgbrg_pattern;
1189 ccdc_pattern = ccdc_sgrbg_pattern;
1192 ccdc_config_imgattr(ccdc, ccdc_pattern);
1194 /* Generate VD0 on the last line of the image and VD1 on the
1197 isp_reg_writel(isp, ((format->height - 2) << ISPCCDC_VDINT_0_SHIFT) |
1198 ((format->height * 2 / 3) << ISPCCDC_VDINT_1_SHIFT),
1199 OMAP3_ISP_IOMEM_CCDC, ISPCCDC_VDINT);
1201 /* CCDC_PAD_SOURCE_OF */
1202 format = &ccdc->formats[CCDC_PAD_SOURCE_OF];
1205 isp_reg_writel(isp, (crop->left << ISPCCDC_HORZ_INFO_SPH_SHIFT) |
1206 ((crop->width - 1) << ISPCCDC_HORZ_INFO_NPH_SHIFT),
1207 OMAP3_ISP_IOMEM_CCDC, ISPCCDC_HORZ_INFO);
1208 isp_reg_writel(isp, crop->top << ISPCCDC_VERT_START_SLV0_SHIFT,
1209 OMAP3_ISP_IOMEM_CCDC, ISPCCDC_VERT_START);
1210 isp_reg_writel(isp, (crop->height - 1)
1211 << ISPCCDC_VERT_LINES_NLV_SHIFT,
1212 OMAP3_ISP_IOMEM_CCDC, ISPCCDC_VERT_LINES);
1214 ccdc_config_outlineoffset(ccdc, ccdc->video_out.bpl_value, 0, 0);
1216 /* The CCDC outputs data in UYVY order by default. Swap bytes to get
1219 if (format->code == V4L2_MBUS_FMT_YUYV8_1X16)
1220 isp_reg_set(isp, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_CFG,
1223 isp_reg_clr(isp, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_CFG,
1226 /* Use PACK8 mode for 1byte per pixel formats. */
1227 if (omap3isp_video_format_info(format->code)->width <= 8)
1228 syn_mode |= ISPCCDC_SYN_MODE_PACK8;
1230 syn_mode &= ~ISPCCDC_SYN_MODE_PACK8;
1232 isp_reg_writel(isp, syn_mode, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_SYN_MODE);
1234 /* CCDC_PAD_SOURCE_VP */
1235 format = &ccdc->formats[CCDC_PAD_SOURCE_VP];
1237 isp_reg_writel(isp, (0 << ISPCCDC_FMT_HORZ_FMTSPH_SHIFT) |
1238 (format->width << ISPCCDC_FMT_HORZ_FMTLNH_SHIFT),
1239 OMAP3_ISP_IOMEM_CCDC, ISPCCDC_FMT_HORZ);
1240 isp_reg_writel(isp, (0 << ISPCCDC_FMT_VERT_FMTSLV_SHIFT) |
1241 ((format->height + 1) << ISPCCDC_FMT_VERT_FMTLNV_SHIFT),
1242 OMAP3_ISP_IOMEM_CCDC, ISPCCDC_FMT_VERT);
1244 isp_reg_writel(isp, (format->width << ISPCCDC_VP_OUT_HORZ_NUM_SHIFT) |
1245 (format->height << ISPCCDC_VP_OUT_VERT_NUM_SHIFT),
1246 OMAP3_ISP_IOMEM_CCDC, ISPCCDC_VP_OUT);
1248 /* Lens shading correction. */
1249 spin_lock_irqsave(&ccdc->lsc.req_lock, flags);
1250 if (ccdc->lsc.request == NULL)
1253 WARN_ON(ccdc->lsc.active);
1255 /* Get last good LSC configuration. If it is not supported for
1256 * the current active resolution discard it.
1258 if (ccdc->lsc.active == NULL &&
1259 __ccdc_lsc_configure(ccdc, ccdc->lsc.request) == 0) {
1260 ccdc->lsc.active = ccdc->lsc.request;
1262 list_add_tail(&ccdc->lsc.request->list, &ccdc->lsc.free_queue);
1263 schedule_work(&ccdc->lsc.table_work);
1266 ccdc->lsc.request = NULL;
1269 spin_unlock_irqrestore(&ccdc->lsc.req_lock, flags);
1271 ccdc_apply_controls(ccdc);
1274 static void __ccdc_enable(struct isp_ccdc_device *ccdc, int enable)
1276 struct isp_device *isp = to_isp_device(ccdc);
1278 isp_reg_clr_set(isp, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_PCR,
1279 ISPCCDC_PCR_EN, enable ? ISPCCDC_PCR_EN : 0);
1282 static int ccdc_disable(struct isp_ccdc_device *ccdc)
1284 unsigned long flags;
1287 spin_lock_irqsave(&ccdc->lock, flags);
1288 if (ccdc->state == ISP_PIPELINE_STREAM_CONTINUOUS)
1289 ccdc->stopping = CCDC_STOP_REQUEST;
1290 spin_unlock_irqrestore(&ccdc->lock, flags);
1292 ret = wait_event_timeout(ccdc->wait,
1293 ccdc->stopping == CCDC_STOP_FINISHED,
1294 msecs_to_jiffies(2000));
1297 dev_warn(to_device(ccdc), "CCDC stop timeout!\n");
1300 omap3isp_sbl_disable(to_isp_device(ccdc), OMAP3_ISP_SBL_CCDC_LSC_READ);
1302 mutex_lock(&ccdc->ioctl_lock);
1303 ccdc_lsc_free_request(ccdc, ccdc->lsc.request);
1304 ccdc->lsc.request = ccdc->lsc.active;
1305 ccdc->lsc.active = NULL;
1306 cancel_work_sync(&ccdc->lsc.table_work);
1307 ccdc_lsc_free_queue(ccdc, &ccdc->lsc.free_queue);
1308 mutex_unlock(&ccdc->ioctl_lock);
1310 ccdc->stopping = CCDC_STOP_NOT_REQUESTED;
1312 return ret > 0 ? 0 : ret;
1315 static void ccdc_enable(struct isp_ccdc_device *ccdc)
1317 if (ccdc_lsc_is_configured(ccdc))
1318 __ccdc_lsc_enable(ccdc, 1);
1319 __ccdc_enable(ccdc, 1);
1322 /* -----------------------------------------------------------------------------
1323 * Interrupt handling
1327 * ccdc_sbl_busy - Poll idle state of CCDC and related SBL memory write bits
1328 * @ccdc: Pointer to ISP CCDC device.
1330 * Returns zero if the CCDC is idle and the image has been written to
1333 static int ccdc_sbl_busy(struct isp_ccdc_device *ccdc)
1335 struct isp_device *isp = to_isp_device(ccdc);
1337 return omap3isp_ccdc_busy(ccdc)
1338 | (isp_reg_readl(isp, OMAP3_ISP_IOMEM_SBL, ISPSBL_CCDC_WR_0) &
1339 ISPSBL_CCDC_WR_0_DATA_READY)
1340 | (isp_reg_readl(isp, OMAP3_ISP_IOMEM_SBL, ISPSBL_CCDC_WR_1) &
1341 ISPSBL_CCDC_WR_0_DATA_READY)
1342 | (isp_reg_readl(isp, OMAP3_ISP_IOMEM_SBL, ISPSBL_CCDC_WR_2) &
1343 ISPSBL_CCDC_WR_0_DATA_READY)
1344 | (isp_reg_readl(isp, OMAP3_ISP_IOMEM_SBL, ISPSBL_CCDC_WR_3) &
1345 ISPSBL_CCDC_WR_0_DATA_READY);
1349 * ccdc_sbl_wait_idle - Wait until the CCDC and related SBL are idle
1350 * @ccdc: Pointer to ISP CCDC device.
1351 * @max_wait: Max retry count in us for wait for idle/busy transition.
1353 static int ccdc_sbl_wait_idle(struct isp_ccdc_device *ccdc,
1354 unsigned int max_wait)
1356 unsigned int wait = 0;
1359 max_wait = 10000; /* 10 ms */
1361 for (wait = 0; wait <= max_wait; wait++) {
1362 if (!ccdc_sbl_busy(ccdc))
1372 /* __ccdc_handle_stopping - Handle CCDC and/or LSC stopping sequence
1373 * @ccdc: Pointer to ISP CCDC device.
1374 * @event: Pointing which event trigger handler
1376 * Return 1 when the event and stopping request combination is satisfied,
1379 static int __ccdc_handle_stopping(struct isp_ccdc_device *ccdc, u32 event)
1383 switch ((ccdc->stopping & 3) | event) {
1384 case CCDC_STOP_REQUEST | CCDC_EVENT_VD1:
1385 if (ccdc->lsc.state != LSC_STATE_STOPPED)
1386 __ccdc_lsc_enable(ccdc, 0);
1387 __ccdc_enable(ccdc, 0);
1388 ccdc->stopping = CCDC_STOP_EXECUTED;
1391 case CCDC_STOP_EXECUTED | CCDC_EVENT_VD0:
1392 ccdc->stopping |= CCDC_STOP_CCDC_FINISHED;
1393 if (ccdc->lsc.state == LSC_STATE_STOPPED)
1394 ccdc->stopping |= CCDC_STOP_LSC_FINISHED;
1398 case CCDC_STOP_EXECUTED | CCDC_EVENT_LSC_DONE:
1399 ccdc->stopping |= CCDC_STOP_LSC_FINISHED;
1403 case CCDC_STOP_EXECUTED | CCDC_EVENT_VD1:
1407 if (ccdc->stopping == CCDC_STOP_FINISHED) {
1408 wake_up(&ccdc->wait);
1415 static void ccdc_hs_vs_isr(struct isp_ccdc_device *ccdc)
1417 struct isp_pipeline *pipe = to_isp_pipeline(&ccdc->subdev.entity);
1418 struct video_device *vdev = ccdc->subdev.devnode;
1419 struct v4l2_event event;
1421 /* Frame number propagation */
1422 atomic_inc(&pipe->frame_number);
1424 memset(&event, 0, sizeof(event));
1425 event.type = V4L2_EVENT_FRAME_SYNC;
1426 event.u.frame_sync.frame_sequence = atomic_read(&pipe->frame_number);
1428 v4l2_event_queue(vdev, &event);
1432 * ccdc_lsc_isr - Handle LSC events
1433 * @ccdc: Pointer to ISP CCDC device.
1434 * @events: LSC events
1436 static void ccdc_lsc_isr(struct isp_ccdc_device *ccdc, u32 events)
1438 unsigned long flags;
1440 if (events & IRQ0STATUS_CCDC_LSC_PREF_ERR_IRQ) {
1441 struct isp_pipeline *pipe =
1442 to_isp_pipeline(&ccdc->subdev.entity);
1444 ccdc_lsc_error_handler(ccdc);
1446 dev_dbg(to_device(ccdc), "lsc prefetch error\n");
1449 if (!(events & IRQ0STATUS_CCDC_LSC_DONE_IRQ))
1452 /* LSC_DONE interrupt occur, there are two cases
1453 * 1. stopping for reconfiguration
1454 * 2. stopping because of STREAM OFF command
1456 spin_lock_irqsave(&ccdc->lsc.req_lock, flags);
1458 if (ccdc->lsc.state == LSC_STATE_STOPPING)
1459 ccdc->lsc.state = LSC_STATE_STOPPED;
1461 if (__ccdc_handle_stopping(ccdc, CCDC_EVENT_LSC_DONE))
1464 if (ccdc->lsc.state != LSC_STATE_RECONFIG)
1467 /* LSC is in STOPPING state, change to the new state */
1468 ccdc->lsc.state = LSC_STATE_STOPPED;
1470 /* This is an exception. Start of frame and LSC_DONE interrupt
1471 * have been received on the same time. Skip this event and wait
1474 if (events & IRQ0STATUS_HS_VS_IRQ)
1477 /* The LSC engine is stopped at this point. Enable it if there's a
1480 if (ccdc->lsc.request == NULL)
1483 ccdc_lsc_enable(ccdc);
1486 spin_unlock_irqrestore(&ccdc->lsc.req_lock, flags);
1489 static int ccdc_isr_buffer(struct isp_ccdc_device *ccdc)
1491 struct isp_pipeline *pipe = to_isp_pipeline(&ccdc->subdev.entity);
1492 struct isp_device *isp = to_isp_device(ccdc);
1493 struct isp_buffer *buffer;
1496 /* The CCDC generates VD0 interrupts even when disabled (the datasheet
1497 * doesn't explicitly state if that's supposed to happen or not, so it
1498 * can be considered as a hardware bug or as a feature, but we have to
1499 * deal with it anyway). Disabling the CCDC when no buffer is available
1500 * would thus not be enough, we need to handle the situation explicitly.
1502 if (list_empty(&ccdc->video_out.dmaqueue))
1505 /* We're in continuous mode, and memory writes were disabled due to a
1506 * buffer underrun. Reenable them now that we have a buffer. The buffer
1507 * address has been set in ccdc_video_queue.
1509 if (ccdc->state == ISP_PIPELINE_STREAM_CONTINUOUS && ccdc->underrun) {
1515 if (ccdc_sbl_wait_idle(ccdc, 1000)) {
1516 dev_info(isp->dev, "CCDC won't become idle!\n");
1517 isp->crashed |= 1U << ccdc->subdev.entity.id;
1518 omap3isp_pipeline_cancel_stream(pipe);
1522 buffer = omap3isp_video_buffer_next(&ccdc->video_out);
1523 if (buffer != NULL) {
1524 ccdc_set_outaddr(ccdc, buffer->dma);
1528 pipe->state |= ISP_PIPELINE_IDLE_OUTPUT;
1530 if (ccdc->state == ISP_PIPELINE_STREAM_SINGLESHOT &&
1531 isp_pipeline_ready(pipe))
1532 omap3isp_pipeline_set_stream(pipe,
1533 ISP_PIPELINE_STREAM_SINGLESHOT);
1540 * ccdc_vd0_isr - Handle VD0 event
1541 * @ccdc: Pointer to ISP CCDC device.
1543 * Executes LSC deferred enablement before next frame starts.
1545 static void ccdc_vd0_isr(struct isp_ccdc_device *ccdc)
1547 unsigned long flags;
1550 if (ccdc->output & CCDC_OUTPUT_MEMORY)
1551 restart = ccdc_isr_buffer(ccdc);
1553 spin_lock_irqsave(&ccdc->lock, flags);
1554 if (__ccdc_handle_stopping(ccdc, CCDC_EVENT_VD0)) {
1555 spin_unlock_irqrestore(&ccdc->lock, flags);
1559 if (!ccdc->shadow_update)
1560 ccdc_apply_controls(ccdc);
1561 spin_unlock_irqrestore(&ccdc->lock, flags);
1568 * ccdc_vd1_isr - Handle VD1 event
1569 * @ccdc: Pointer to ISP CCDC device.
1571 static void ccdc_vd1_isr(struct isp_ccdc_device *ccdc)
1573 unsigned long flags;
1575 spin_lock_irqsave(&ccdc->lsc.req_lock, flags);
1578 * Depending on the CCDC pipeline state, CCDC stopping should be
1579 * handled differently. In SINGLESHOT we emulate an internal CCDC
1580 * stopping because the CCDC hw works only in continuous mode.
1581 * When CONTINUOUS pipeline state is used and the CCDC writes it's
1582 * data to memory the CCDC and LSC are stopped immediately but
1583 * without change the CCDC stopping state machine. The CCDC
1584 * stopping state machine should be used only when user request
1585 * for stopping is received (SINGLESHOT is an exeption).
1587 switch (ccdc->state) {
1588 case ISP_PIPELINE_STREAM_SINGLESHOT:
1589 ccdc->stopping = CCDC_STOP_REQUEST;
1592 case ISP_PIPELINE_STREAM_CONTINUOUS:
1593 if (ccdc->output & CCDC_OUTPUT_MEMORY) {
1594 if (ccdc->lsc.state != LSC_STATE_STOPPED)
1595 __ccdc_lsc_enable(ccdc, 0);
1596 __ccdc_enable(ccdc, 0);
1600 case ISP_PIPELINE_STREAM_STOPPED:
1604 if (__ccdc_handle_stopping(ccdc, CCDC_EVENT_VD1))
1607 if (ccdc->lsc.request == NULL)
1611 * LSC need to be reconfigured. Stop it here and on next LSC_DONE IRQ
1612 * do the appropriate changes in registers
1614 if (ccdc->lsc.state == LSC_STATE_RUNNING) {
1615 __ccdc_lsc_enable(ccdc, 0);
1616 ccdc->lsc.state = LSC_STATE_RECONFIG;
1620 /* LSC has been in STOPPED state, enable it */
1621 if (ccdc->lsc.state == LSC_STATE_STOPPED)
1622 ccdc_lsc_enable(ccdc);
1625 spin_unlock_irqrestore(&ccdc->lsc.req_lock, flags);
1629 * omap3isp_ccdc_isr - Configure CCDC during interframe time.
1630 * @ccdc: Pointer to ISP CCDC device.
1631 * @events: CCDC events
1633 int omap3isp_ccdc_isr(struct isp_ccdc_device *ccdc, u32 events)
1635 if (ccdc->state == ISP_PIPELINE_STREAM_STOPPED)
1638 if (events & IRQ0STATUS_CCDC_VD1_IRQ)
1641 ccdc_lsc_isr(ccdc, events);
1643 if (events & IRQ0STATUS_CCDC_VD0_IRQ)
1646 if (events & IRQ0STATUS_HS_VS_IRQ)
1647 ccdc_hs_vs_isr(ccdc);
1652 /* -----------------------------------------------------------------------------
1653 * ISP video operations
1656 static int ccdc_video_queue(struct isp_video *video, struct isp_buffer *buffer)
1658 struct isp_ccdc_device *ccdc = &video->isp->isp_ccdc;
1660 if (!(ccdc->output & CCDC_OUTPUT_MEMORY))
1663 ccdc_set_outaddr(ccdc, buffer->dma);
1665 /* We now have a buffer queued on the output, restart the pipeline
1666 * on the next CCDC interrupt if running in continuous mode (or when
1667 * starting the stream).
1674 static const struct isp_video_operations ccdc_video_ops = {
1675 .queue = ccdc_video_queue,
1678 /* -----------------------------------------------------------------------------
1679 * V4L2 subdev operations
1683 * ccdc_ioctl - CCDC module private ioctl's
1684 * @sd: ISP CCDC V4L2 subdevice
1685 * @cmd: ioctl command
1686 * @arg: ioctl argument
1688 * Return 0 on success or a negative error code otherwise.
1690 static long ccdc_ioctl(struct v4l2_subdev *sd, unsigned int cmd, void *arg)
1692 struct isp_ccdc_device *ccdc = v4l2_get_subdevdata(sd);
1696 case VIDIOC_OMAP3ISP_CCDC_CFG:
1697 mutex_lock(&ccdc->ioctl_lock);
1698 ret = ccdc_config(ccdc, arg);
1699 mutex_unlock(&ccdc->ioctl_lock);
1703 return -ENOIOCTLCMD;
1709 static int ccdc_subscribe_event(struct v4l2_subdev *sd, struct v4l2_fh *fh,
1710 struct v4l2_event_subscription *sub)
1712 if (sub->type != V4L2_EVENT_FRAME_SYNC)
1715 /* line number is zero at frame start */
1719 return v4l2_event_subscribe(fh, sub, OMAP3ISP_CCDC_NEVENTS, NULL);
1722 static int ccdc_unsubscribe_event(struct v4l2_subdev *sd, struct v4l2_fh *fh,
1723 struct v4l2_event_subscription *sub)
1725 return v4l2_event_unsubscribe(fh, sub);
1729 * ccdc_set_stream - Enable/Disable streaming on the CCDC module
1730 * @sd: ISP CCDC V4L2 subdevice
1731 * @enable: Enable/disable stream
1733 * When writing to memory, the CCDC hardware can't be enabled without a memory
1734 * buffer to write to. As the s_stream operation is called in response to a
1735 * STREAMON call without any buffer queued yet, just update the enabled field
1736 * and return immediately. The CCDC will be enabled in ccdc_isr_buffer().
1738 * When not writing to memory enable the CCDC immediately.
1740 static int ccdc_set_stream(struct v4l2_subdev *sd, int enable)
1742 struct isp_ccdc_device *ccdc = v4l2_get_subdevdata(sd);
1743 struct isp_device *isp = to_isp_device(ccdc);
1746 if (ccdc->state == ISP_PIPELINE_STREAM_STOPPED) {
1747 if (enable == ISP_PIPELINE_STREAM_STOPPED)
1750 omap3isp_subclk_enable(isp, OMAP3_ISP_SUBCLK_CCDC);
1751 isp_reg_set(isp, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_CFG,
1754 ccdc_configure(ccdc);
1756 /* TODO: Don't configure the video port if all of its output
1757 * links are inactive.
1759 ccdc_config_vp(ccdc);
1760 ccdc_enable_vp(ccdc, 1);
1761 ccdc_print_status(ccdc);
1765 case ISP_PIPELINE_STREAM_CONTINUOUS:
1766 if (ccdc->output & CCDC_OUTPUT_MEMORY)
1767 omap3isp_sbl_enable(isp, OMAP3_ISP_SBL_CCDC_WRITE);
1769 if (ccdc->underrun || !(ccdc->output & CCDC_OUTPUT_MEMORY))
1775 case ISP_PIPELINE_STREAM_SINGLESHOT:
1776 if (ccdc->output & CCDC_OUTPUT_MEMORY &&
1777 ccdc->state != ISP_PIPELINE_STREAM_SINGLESHOT)
1778 omap3isp_sbl_enable(isp, OMAP3_ISP_SBL_CCDC_WRITE);
1783 case ISP_PIPELINE_STREAM_STOPPED:
1784 ret = ccdc_disable(ccdc);
1785 if (ccdc->output & CCDC_OUTPUT_MEMORY)
1786 omap3isp_sbl_disable(isp, OMAP3_ISP_SBL_CCDC_WRITE);
1787 omap3isp_subclk_disable(isp, OMAP3_ISP_SUBCLK_CCDC);
1792 ccdc->state = enable;
1796 static struct v4l2_mbus_framefmt *
1797 __ccdc_get_format(struct isp_ccdc_device *ccdc, struct v4l2_subdev_fh *fh,
1798 unsigned int pad, enum v4l2_subdev_format_whence which)
1800 if (which == V4L2_SUBDEV_FORMAT_TRY)
1801 return v4l2_subdev_get_try_format(fh, pad);
1803 return &ccdc->formats[pad];
1806 static struct v4l2_rect *
1807 __ccdc_get_crop(struct isp_ccdc_device *ccdc, struct v4l2_subdev_fh *fh,
1808 enum v4l2_subdev_format_whence which)
1810 if (which == V4L2_SUBDEV_FORMAT_TRY)
1811 return v4l2_subdev_get_try_crop(fh, CCDC_PAD_SOURCE_OF);
1817 * ccdc_try_format - Try video format on a pad
1818 * @ccdc: ISP CCDC device
1819 * @fh : V4L2 subdev file handle
1824 ccdc_try_format(struct isp_ccdc_device *ccdc, struct v4l2_subdev_fh *fh,
1825 unsigned int pad, struct v4l2_mbus_framefmt *fmt,
1826 enum v4l2_subdev_format_whence which)
1828 const struct isp_format_info *info;
1829 enum v4l2_mbus_pixelcode pixelcode;
1830 unsigned int width = fmt->width;
1831 unsigned int height = fmt->height;
1832 struct v4l2_rect *crop;
1837 for (i = 0; i < ARRAY_SIZE(ccdc_fmts); i++) {
1838 if (fmt->code == ccdc_fmts[i])
1842 /* If not found, use SGRBG10 as default */
1843 if (i >= ARRAY_SIZE(ccdc_fmts))
1844 fmt->code = V4L2_MBUS_FMT_SGRBG10_1X10;
1846 /* Clamp the input size. */
1847 fmt->width = clamp_t(u32, width, 32, 4096);
1848 fmt->height = clamp_t(u32, height, 32, 4096);
1851 case CCDC_PAD_SOURCE_OF:
1852 pixelcode = fmt->code;
1853 *fmt = *__ccdc_get_format(ccdc, fh, CCDC_PAD_SINK, which);
1855 /* YUV formats are converted from 2X8 to 1X16 by the bridge and
1856 * can be byte-swapped.
1858 if (fmt->code == V4L2_MBUS_FMT_YUYV8_2X8 ||
1859 fmt->code == V4L2_MBUS_FMT_UYVY8_2X8) {
1860 /* Use the user requested format if YUV. */
1861 if (pixelcode == V4L2_MBUS_FMT_YUYV8_2X8 ||
1862 pixelcode == V4L2_MBUS_FMT_UYVY8_2X8 ||
1863 pixelcode == V4L2_MBUS_FMT_YUYV8_1X16 ||
1864 pixelcode == V4L2_MBUS_FMT_UYVY8_1X16)
1865 fmt->code = pixelcode;
1867 if (fmt->code == V4L2_MBUS_FMT_YUYV8_2X8)
1868 fmt->code = V4L2_MBUS_FMT_YUYV8_1X16;
1869 else if (fmt->code == V4L2_MBUS_FMT_UYVY8_2X8)
1870 fmt->code = V4L2_MBUS_FMT_UYVY8_1X16;
1873 /* Hardcode the output size to the crop rectangle size. */
1874 crop = __ccdc_get_crop(ccdc, fh, which);
1875 fmt->width = crop->width;
1876 fmt->height = crop->height;
1879 case CCDC_PAD_SOURCE_VP:
1880 *fmt = *__ccdc_get_format(ccdc, fh, CCDC_PAD_SINK, which);
1882 /* The video port interface truncates the data to 10 bits. */
1883 info = omap3isp_video_format_info(fmt->code);
1884 fmt->code = info->truncated;
1886 /* YUV formats are not supported by the video port. */
1887 if (fmt->code == V4L2_MBUS_FMT_YUYV8_2X8 ||
1888 fmt->code == V4L2_MBUS_FMT_UYVY8_2X8)
1891 /* The number of lines that can be clocked out from the video
1892 * port output must be at least one line less than the number
1895 fmt->width = clamp_t(u32, width, 32, fmt->width);
1896 fmt->height = clamp_t(u32, height, 32, fmt->height - 1);
1900 /* Data is written to memory unpacked, each 10-bit or 12-bit pixel is
1901 * stored on 2 bytes.
1903 fmt->colorspace = V4L2_COLORSPACE_SRGB;
1904 fmt->field = V4L2_FIELD_NONE;
1908 * ccdc_try_crop - Validate a crop rectangle
1909 * @ccdc: ISP CCDC device
1910 * @sink: format on the sink pad
1911 * @crop: crop rectangle to be validated
1913 static void ccdc_try_crop(struct isp_ccdc_device *ccdc,
1914 const struct v4l2_mbus_framefmt *sink,
1915 struct v4l2_rect *crop)
1917 const struct isp_format_info *info;
1918 unsigned int max_width;
1920 /* For Bayer formats, restrict left/top and width/height to even values
1921 * to keep the Bayer pattern.
1923 info = omap3isp_video_format_info(sink->code);
1924 if (info->flavor != V4L2_MBUS_FMT_Y8_1X8) {
1929 crop->left = clamp_t(u32, crop->left, 0, sink->width - CCDC_MIN_WIDTH);
1930 crop->top = clamp_t(u32, crop->top, 0, sink->height - CCDC_MIN_HEIGHT);
1932 /* The data formatter truncates the number of horizontal output pixels
1933 * to a multiple of 16. To avoid clipping data, allow callers to request
1934 * an output size bigger than the input size up to the nearest multiple
1937 max_width = (sink->width - crop->left + 15) & ~15;
1938 crop->width = clamp_t(u32, crop->width, CCDC_MIN_WIDTH, max_width)
1940 crop->height = clamp_t(u32, crop->height, CCDC_MIN_HEIGHT,
1941 sink->height - crop->top);
1943 /* Odd width/height values don't make sense for Bayer formats. */
1944 if (info->flavor != V4L2_MBUS_FMT_Y8_1X8) {
1951 * ccdc_enum_mbus_code - Handle pixel format enumeration
1952 * @sd : pointer to v4l2 subdev structure
1953 * @fh : V4L2 subdev file handle
1954 * @code : pointer to v4l2_subdev_mbus_code_enum structure
1955 * return -EINVAL or zero on success
1957 static int ccdc_enum_mbus_code(struct v4l2_subdev *sd,
1958 struct v4l2_subdev_fh *fh,
1959 struct v4l2_subdev_mbus_code_enum *code)
1961 struct isp_ccdc_device *ccdc = v4l2_get_subdevdata(sd);
1962 struct v4l2_mbus_framefmt *format;
1964 switch (code->pad) {
1966 if (code->index >= ARRAY_SIZE(ccdc_fmts))
1969 code->code = ccdc_fmts[code->index];
1972 case CCDC_PAD_SOURCE_OF:
1973 format = __ccdc_get_format(ccdc, fh, code->pad,
1974 V4L2_SUBDEV_FORMAT_TRY);
1976 if (format->code == V4L2_MBUS_FMT_YUYV8_2X8 ||
1977 format->code == V4L2_MBUS_FMT_UYVY8_2X8) {
1978 /* In YUV mode the CCDC can swap bytes. */
1979 if (code->index == 0)
1980 code->code = V4L2_MBUS_FMT_YUYV8_1X16;
1981 else if (code->index == 1)
1982 code->code = V4L2_MBUS_FMT_UYVY8_1X16;
1986 /* In raw mode, no configurable format confversion is
1989 if (code->index == 0)
1990 code->code = format->code;
1996 case CCDC_PAD_SOURCE_VP:
1997 /* The CCDC supports no configurable format conversion
1998 * compatible with the video port. Enumerate a single output
2001 if (code->index != 0)
2004 format = __ccdc_get_format(ccdc, fh, code->pad,
2005 V4L2_SUBDEV_FORMAT_TRY);
2007 /* A pixel code equal to 0 means that the video port doesn't
2008 * support the input format. Don't enumerate any pixel code.
2010 if (format->code == 0)
2013 code->code = format->code;
2023 static int ccdc_enum_frame_size(struct v4l2_subdev *sd,
2024 struct v4l2_subdev_fh *fh,
2025 struct v4l2_subdev_frame_size_enum *fse)
2027 struct isp_ccdc_device *ccdc = v4l2_get_subdevdata(sd);
2028 struct v4l2_mbus_framefmt format;
2030 if (fse->index != 0)
2033 format.code = fse->code;
2036 ccdc_try_format(ccdc, fh, fse->pad, &format, V4L2_SUBDEV_FORMAT_TRY);
2037 fse->min_width = format.width;
2038 fse->min_height = format.height;
2040 if (format.code != fse->code)
2043 format.code = fse->code;
2046 ccdc_try_format(ccdc, fh, fse->pad, &format, V4L2_SUBDEV_FORMAT_TRY);
2047 fse->max_width = format.width;
2048 fse->max_height = format.height;
2054 * ccdc_get_selection - Retrieve a selection rectangle on a pad
2055 * @sd: ISP CCDC V4L2 subdevice
2056 * @fh: V4L2 subdev file handle
2057 * @sel: Selection rectangle
2059 * The only supported rectangles are the crop rectangles on the output formatter
2062 * Return 0 on success or a negative error code otherwise.
2064 static int ccdc_get_selection(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh,
2065 struct v4l2_subdev_selection *sel)
2067 struct isp_ccdc_device *ccdc = v4l2_get_subdevdata(sd);
2068 struct v4l2_mbus_framefmt *format;
2070 if (sel->pad != CCDC_PAD_SOURCE_OF)
2073 switch (sel->target) {
2074 case V4L2_SEL_TGT_CROP_BOUNDS:
2077 sel->r.width = INT_MAX;
2078 sel->r.height = INT_MAX;
2080 format = __ccdc_get_format(ccdc, fh, CCDC_PAD_SINK, sel->which);
2081 ccdc_try_crop(ccdc, format, &sel->r);
2084 case V4L2_SEL_TGT_CROP:
2085 sel->r = *__ccdc_get_crop(ccdc, fh, sel->which);
2096 * ccdc_set_selection - Set a selection rectangle on a pad
2097 * @sd: ISP CCDC V4L2 subdevice
2098 * @fh: V4L2 subdev file handle
2099 * @sel: Selection rectangle
2101 * The only supported rectangle is the actual crop rectangle on the output
2102 * formatter source pad.
2104 * Return 0 on success or a negative error code otherwise.
2106 static int ccdc_set_selection(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh,
2107 struct v4l2_subdev_selection *sel)
2109 struct isp_ccdc_device *ccdc = v4l2_get_subdevdata(sd);
2110 struct v4l2_mbus_framefmt *format;
2112 if (sel->target != V4L2_SEL_TGT_CROP ||
2113 sel->pad != CCDC_PAD_SOURCE_OF)
2116 /* The crop rectangle can't be changed while streaming. */
2117 if (ccdc->state != ISP_PIPELINE_STREAM_STOPPED)
2120 /* Modifying the crop rectangle always changes the format on the source
2121 * pad. If the KEEP_CONFIG flag is set, just return the current crop
2124 if (sel->flags & V4L2_SEL_FLAG_KEEP_CONFIG) {
2125 sel->r = *__ccdc_get_crop(ccdc, fh, sel->which);
2129 format = __ccdc_get_format(ccdc, fh, CCDC_PAD_SINK, sel->which);
2130 ccdc_try_crop(ccdc, format, &sel->r);
2131 *__ccdc_get_crop(ccdc, fh, sel->which) = sel->r;
2133 /* Update the source format. */
2134 format = __ccdc_get_format(ccdc, fh, CCDC_PAD_SOURCE_OF, sel->which);
2135 ccdc_try_format(ccdc, fh, CCDC_PAD_SOURCE_OF, format, sel->which);
2141 * ccdc_get_format - Retrieve the video format on a pad
2142 * @sd : ISP CCDC V4L2 subdevice
2143 * @fh : V4L2 subdev file handle
2146 * Return 0 on success or -EINVAL if the pad is invalid or doesn't correspond
2147 * to the format type.
2149 static int ccdc_get_format(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh,
2150 struct v4l2_subdev_format *fmt)
2152 struct isp_ccdc_device *ccdc = v4l2_get_subdevdata(sd);
2153 struct v4l2_mbus_framefmt *format;
2155 format = __ccdc_get_format(ccdc, fh, fmt->pad, fmt->which);
2159 fmt->format = *format;
2164 * ccdc_set_format - Set the video format on a pad
2165 * @sd : ISP CCDC V4L2 subdevice
2166 * @fh : V4L2 subdev file handle
2169 * Return 0 on success or -EINVAL if the pad is invalid or doesn't correspond
2170 * to the format type.
2172 static int ccdc_set_format(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh,
2173 struct v4l2_subdev_format *fmt)
2175 struct isp_ccdc_device *ccdc = v4l2_get_subdevdata(sd);
2176 struct v4l2_mbus_framefmt *format;
2177 struct v4l2_rect *crop;
2179 format = __ccdc_get_format(ccdc, fh, fmt->pad, fmt->which);
2183 ccdc_try_format(ccdc, fh, fmt->pad, &fmt->format, fmt->which);
2184 *format = fmt->format;
2186 /* Propagate the format from sink to source */
2187 if (fmt->pad == CCDC_PAD_SINK) {
2188 /* Reset the crop rectangle. */
2189 crop = __ccdc_get_crop(ccdc, fh, fmt->which);
2192 crop->width = fmt->format.width;
2193 crop->height = fmt->format.height;
2195 ccdc_try_crop(ccdc, &fmt->format, crop);
2197 /* Update the source formats. */
2198 format = __ccdc_get_format(ccdc, fh, CCDC_PAD_SOURCE_OF,
2200 *format = fmt->format;
2201 ccdc_try_format(ccdc, fh, CCDC_PAD_SOURCE_OF, format,
2204 format = __ccdc_get_format(ccdc, fh, CCDC_PAD_SOURCE_VP,
2206 *format = fmt->format;
2207 ccdc_try_format(ccdc, fh, CCDC_PAD_SOURCE_VP, format,
2215 * Decide whether desired output pixel code can be obtained with
2216 * the lane shifter by shifting the input pixel code.
2217 * @in: input pixelcode to shifter
2218 * @out: output pixelcode from shifter
2219 * @additional_shift: # of bits the sensor's LSB is offset from CAMEXT[0]
2221 * return true if the combination is possible
2222 * return false otherwise
2224 static bool ccdc_is_shiftable(enum v4l2_mbus_pixelcode in,
2225 enum v4l2_mbus_pixelcode out,
2226 unsigned int additional_shift)
2228 const struct isp_format_info *in_info, *out_info;
2233 in_info = omap3isp_video_format_info(in);
2234 out_info = omap3isp_video_format_info(out);
2236 if ((in_info->flavor == 0) || (out_info->flavor == 0))
2239 if (in_info->flavor != out_info->flavor)
2242 return in_info->width - out_info->width + additional_shift <= 6;
2245 static int ccdc_link_validate(struct v4l2_subdev *sd,
2246 struct media_link *link,
2247 struct v4l2_subdev_format *source_fmt,
2248 struct v4l2_subdev_format *sink_fmt)
2250 struct isp_ccdc_device *ccdc = v4l2_get_subdevdata(sd);
2251 unsigned long parallel_shift;
2253 /* Check if the two ends match */
2254 if (source_fmt->format.width != sink_fmt->format.width ||
2255 source_fmt->format.height != sink_fmt->format.height)
2258 /* We've got a parallel sensor here. */
2259 if (ccdc->input == CCDC_INPUT_PARALLEL) {
2260 struct isp_parallel_platform_data *pdata =
2261 &((struct isp_v4l2_subdevs_group *)
2262 media_entity_to_v4l2_subdev(link->source->entity)
2263 ->host_priv)->bus.parallel;
2264 parallel_shift = pdata->data_lane_shift * 2;
2269 /* Lane shifter may be used to drop bits on CCDC sink pad */
2270 if (!ccdc_is_shiftable(source_fmt->format.code,
2271 sink_fmt->format.code, parallel_shift))
2278 * ccdc_init_formats - Initialize formats on all pads
2279 * @sd: ISP CCDC V4L2 subdevice
2280 * @fh: V4L2 subdev file handle
2282 * Initialize all pad formats with default values. If fh is not NULL, try
2283 * formats are initialized on the file handle. Otherwise active formats are
2284 * initialized on the device.
2286 static int ccdc_init_formats(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh)
2288 struct v4l2_subdev_format format;
2290 memset(&format, 0, sizeof(format));
2291 format.pad = CCDC_PAD_SINK;
2292 format.which = fh ? V4L2_SUBDEV_FORMAT_TRY : V4L2_SUBDEV_FORMAT_ACTIVE;
2293 format.format.code = V4L2_MBUS_FMT_SGRBG10_1X10;
2294 format.format.width = 4096;
2295 format.format.height = 4096;
2296 ccdc_set_format(sd, fh, &format);
2301 /* V4L2 subdev core operations */
2302 static const struct v4l2_subdev_core_ops ccdc_v4l2_core_ops = {
2303 .ioctl = ccdc_ioctl,
2304 .subscribe_event = ccdc_subscribe_event,
2305 .unsubscribe_event = ccdc_unsubscribe_event,
2308 /* V4L2 subdev video operations */
2309 static const struct v4l2_subdev_video_ops ccdc_v4l2_video_ops = {
2310 .s_stream = ccdc_set_stream,
2313 /* V4L2 subdev pad operations */
2314 static const struct v4l2_subdev_pad_ops ccdc_v4l2_pad_ops = {
2315 .enum_mbus_code = ccdc_enum_mbus_code,
2316 .enum_frame_size = ccdc_enum_frame_size,
2317 .get_fmt = ccdc_get_format,
2318 .set_fmt = ccdc_set_format,
2319 .get_selection = ccdc_get_selection,
2320 .set_selection = ccdc_set_selection,
2321 .link_validate = ccdc_link_validate,
2324 /* V4L2 subdev operations */
2325 static const struct v4l2_subdev_ops ccdc_v4l2_ops = {
2326 .core = &ccdc_v4l2_core_ops,
2327 .video = &ccdc_v4l2_video_ops,
2328 .pad = &ccdc_v4l2_pad_ops,
2331 /* V4L2 subdev internal operations */
2332 static const struct v4l2_subdev_internal_ops ccdc_v4l2_internal_ops = {
2333 .open = ccdc_init_formats,
2336 /* -----------------------------------------------------------------------------
2337 * Media entity operations
2341 * ccdc_link_setup - Setup CCDC connections
2342 * @entity: CCDC media entity
2343 * @local: Pad at the local end of the link
2344 * @remote: Pad at the remote end of the link
2345 * @flags: Link flags
2347 * return -EINVAL or zero on success
2349 static int ccdc_link_setup(struct media_entity *entity,
2350 const struct media_pad *local,
2351 const struct media_pad *remote, u32 flags)
2353 struct v4l2_subdev *sd = media_entity_to_v4l2_subdev(entity);
2354 struct isp_ccdc_device *ccdc = v4l2_get_subdevdata(sd);
2355 struct isp_device *isp = to_isp_device(ccdc);
2357 switch (local->index | media_entity_type(remote->entity)) {
2358 case CCDC_PAD_SINK | MEDIA_ENT_T_V4L2_SUBDEV:
2359 /* Read from the sensor (parallel interface), CCP2, CSI2a or
2362 if (!(flags & MEDIA_LNK_FL_ENABLED)) {
2363 ccdc->input = CCDC_INPUT_NONE;
2367 if (ccdc->input != CCDC_INPUT_NONE)
2370 if (remote->entity == &isp->isp_ccp2.subdev.entity)
2371 ccdc->input = CCDC_INPUT_CCP2B;
2372 else if (remote->entity == &isp->isp_csi2a.subdev.entity)
2373 ccdc->input = CCDC_INPUT_CSI2A;
2374 else if (remote->entity == &isp->isp_csi2c.subdev.entity)
2375 ccdc->input = CCDC_INPUT_CSI2C;
2377 ccdc->input = CCDC_INPUT_PARALLEL;
2382 * The ISP core doesn't support pipelines with multiple video outputs.
2383 * Revisit this when it will be implemented, and return -EBUSY for now.
2386 case CCDC_PAD_SOURCE_VP | MEDIA_ENT_T_V4L2_SUBDEV:
2387 /* Write to preview engine, histogram and H3A. When none of
2388 * those links are active, the video port can be disabled.
2390 if (flags & MEDIA_LNK_FL_ENABLED) {
2391 if (ccdc->output & ~CCDC_OUTPUT_PREVIEW)
2393 ccdc->output |= CCDC_OUTPUT_PREVIEW;
2395 ccdc->output &= ~CCDC_OUTPUT_PREVIEW;
2399 case CCDC_PAD_SOURCE_OF | MEDIA_ENT_T_DEVNODE:
2400 /* Write to memory */
2401 if (flags & MEDIA_LNK_FL_ENABLED) {
2402 if (ccdc->output & ~CCDC_OUTPUT_MEMORY)
2404 ccdc->output |= CCDC_OUTPUT_MEMORY;
2406 ccdc->output &= ~CCDC_OUTPUT_MEMORY;
2410 case CCDC_PAD_SOURCE_OF | MEDIA_ENT_T_V4L2_SUBDEV:
2411 /* Write to resizer */
2412 if (flags & MEDIA_LNK_FL_ENABLED) {
2413 if (ccdc->output & ~CCDC_OUTPUT_RESIZER)
2415 ccdc->output |= CCDC_OUTPUT_RESIZER;
2417 ccdc->output &= ~CCDC_OUTPUT_RESIZER;
2428 /* media operations */
2429 static const struct media_entity_operations ccdc_media_ops = {
2430 .link_setup = ccdc_link_setup,
2431 .link_validate = v4l2_subdev_link_validate,
2434 void omap3isp_ccdc_unregister_entities(struct isp_ccdc_device *ccdc)
2436 v4l2_device_unregister_subdev(&ccdc->subdev);
2437 omap3isp_video_unregister(&ccdc->video_out);
2440 int omap3isp_ccdc_register_entities(struct isp_ccdc_device *ccdc,
2441 struct v4l2_device *vdev)
2445 /* Register the subdev and video node. */
2446 ret = v4l2_device_register_subdev(vdev, &ccdc->subdev);
2450 ret = omap3isp_video_register(&ccdc->video_out, vdev);
2457 omap3isp_ccdc_unregister_entities(ccdc);
2461 /* -----------------------------------------------------------------------------
2462 * ISP CCDC initialisation and cleanup
2466 * ccdc_init_entities - Initialize V4L2 subdev and media entity
2467 * @ccdc: ISP CCDC module
2469 * Return 0 on success and a negative error code on failure.
2471 static int ccdc_init_entities(struct isp_ccdc_device *ccdc)
2473 struct v4l2_subdev *sd = &ccdc->subdev;
2474 struct media_pad *pads = ccdc->pads;
2475 struct media_entity *me = &sd->entity;
2478 ccdc->input = CCDC_INPUT_NONE;
2480 v4l2_subdev_init(sd, &ccdc_v4l2_ops);
2481 sd->internal_ops = &ccdc_v4l2_internal_ops;
2482 strlcpy(sd->name, "OMAP3 ISP CCDC", sizeof(sd->name));
2483 sd->grp_id = 1 << 16; /* group ID for isp subdevs */
2484 v4l2_set_subdevdata(sd, ccdc);
2485 sd->flags |= V4L2_SUBDEV_FL_HAS_EVENTS | V4L2_SUBDEV_FL_HAS_DEVNODE;
2487 pads[CCDC_PAD_SINK].flags = MEDIA_PAD_FL_SINK
2488 | MEDIA_PAD_FL_MUST_CONNECT;
2489 pads[CCDC_PAD_SOURCE_VP].flags = MEDIA_PAD_FL_SOURCE;
2490 pads[CCDC_PAD_SOURCE_OF].flags = MEDIA_PAD_FL_SOURCE;
2492 me->ops = &ccdc_media_ops;
2493 ret = media_entity_init(me, CCDC_PADS_NUM, pads, 0);
2497 ccdc_init_formats(sd, NULL);
2499 ccdc->video_out.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
2500 ccdc->video_out.ops = &ccdc_video_ops;
2501 ccdc->video_out.isp = to_isp_device(ccdc);
2502 ccdc->video_out.capture_mem = PAGE_ALIGN(4096 * 4096) * 3;
2503 ccdc->video_out.bpl_alignment = 32;
2505 ret = omap3isp_video_init(&ccdc->video_out, "CCDC");
2509 /* Connect the CCDC subdev to the video node. */
2510 ret = media_entity_create_link(&ccdc->subdev.entity, CCDC_PAD_SOURCE_OF,
2511 &ccdc->video_out.video.entity, 0, 0);
2518 omap3isp_video_cleanup(&ccdc->video_out);
2520 media_entity_cleanup(me);
2525 * omap3isp_ccdc_init - CCDC module initialization.
2526 * @isp: Device pointer specific to the OMAP3 ISP.
2528 * TODO: Get the initialisation values from platform data.
2530 * Return 0 on success or a negative error code otherwise.
2532 int omap3isp_ccdc_init(struct isp_device *isp)
2534 struct isp_ccdc_device *ccdc = &isp->isp_ccdc;
2537 spin_lock_init(&ccdc->lock);
2538 init_waitqueue_head(&ccdc->wait);
2539 mutex_init(&ccdc->ioctl_lock);
2541 ccdc->stopping = CCDC_STOP_NOT_REQUESTED;
2543 INIT_WORK(&ccdc->lsc.table_work, ccdc_lsc_free_table_work);
2544 ccdc->lsc.state = LSC_STATE_STOPPED;
2545 INIT_LIST_HEAD(&ccdc->lsc.free_queue);
2546 spin_lock_init(&ccdc->lsc.req_lock);
2548 ccdc->clamp.oblen = 0;
2549 ccdc->clamp.dcsubval = 0;
2551 ccdc->update = OMAP3ISP_CCDC_BLCLAMP;
2552 ccdc_apply_controls(ccdc);
2554 ret = ccdc_init_entities(ccdc);
2556 mutex_destroy(&ccdc->ioctl_lock);
2564 * omap3isp_ccdc_cleanup - CCDC module cleanup.
2565 * @isp: Device pointer specific to the OMAP3 ISP.
2567 void omap3isp_ccdc_cleanup(struct isp_device *isp)
2569 struct isp_ccdc_device *ccdc = &isp->isp_ccdc;
2571 omap3isp_video_cleanup(&ccdc->video_out);
2572 media_entity_cleanup(&ccdc->subdev.entity);
2574 /* Free LSC requests. As the CCDC is stopped there's no active request,
2575 * so only the pending request and the free queue need to be handled.
2577 ccdc_lsc_free_request(ccdc, ccdc->lsc.request);
2578 cancel_work_sync(&ccdc->lsc.table_work);
2579 ccdc_lsc_free_queue(ccdc, &ccdc->lsc.free_queue);
2581 if (ccdc->fpc.addr != NULL)
2582 dma_free_coherent(isp->dev, ccdc->fpc.fpnum * 4, ccdc->fpc.addr,
2585 mutex_destroy(&ccdc->ioctl_lock);