xref: /linux-6.15/include/uapi/linux/omap3isp.h (revision e00a844a)
1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
2 /*
3  * omap3isp.h
4  *
5  * TI OMAP3 ISP - User-space API
6  *
7  * Copyright (C) 2010 Nokia Corporation
8  * Copyright (C) 2009 Texas Instruments, Inc.
9  *
10  * Contacts: Laurent Pinchart <[email protected]>
11  *	     Sakari Ailus <[email protected]>
12  *
13  * This program is free software; you can redistribute it and/or modify
14  * it under the terms of the GNU General Public License version 2 as
15  * published by the Free Software Foundation.
16  *
17  * This program is distributed in the hope that it will be useful, but
18  * WITHOUT ANY WARRANTY; without even the implied warranty of
19  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
20  * General Public License for more details.
21  *
22  * You should have received a copy of the GNU General Public License
23  * along with this program; if not, write to the Free Software
24  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
25  * 02110-1301 USA
26  */
27 
28 #ifndef OMAP3_ISP_USER_H
29 #define OMAP3_ISP_USER_H
30 
31 #include <linux/types.h>
32 #include <linux/videodev2.h>
33 
34 /*
35  * Private IOCTLs
36  *
37  * VIDIOC_OMAP3ISP_CCDC_CFG: Set CCDC configuration
38  * VIDIOC_OMAP3ISP_PRV_CFG: Set preview engine configuration
39  * VIDIOC_OMAP3ISP_AEWB_CFG: Set AEWB module configuration
40  * VIDIOC_OMAP3ISP_HIST_CFG: Set histogram module configuration
41  * VIDIOC_OMAP3ISP_AF_CFG: Set auto-focus module configuration
42  * VIDIOC_OMAP3ISP_STAT_REQ: Read statistics (AEWB/AF/histogram) data
43  * VIDIOC_OMAP3ISP_STAT_EN: Enable/disable a statistics module
44  */
45 
46 #define VIDIOC_OMAP3ISP_CCDC_CFG \
47 	_IOWR('V', BASE_VIDIOC_PRIVATE + 1, struct omap3isp_ccdc_update_config)
48 #define VIDIOC_OMAP3ISP_PRV_CFG \
49 	_IOWR('V', BASE_VIDIOC_PRIVATE + 2, struct omap3isp_prev_update_config)
50 #define VIDIOC_OMAP3ISP_AEWB_CFG \
51 	_IOWR('V', BASE_VIDIOC_PRIVATE + 3, struct omap3isp_h3a_aewb_config)
52 #define VIDIOC_OMAP3ISP_HIST_CFG \
53 	_IOWR('V', BASE_VIDIOC_PRIVATE + 4, struct omap3isp_hist_config)
54 #define VIDIOC_OMAP3ISP_AF_CFG \
55 	_IOWR('V', BASE_VIDIOC_PRIVATE + 5, struct omap3isp_h3a_af_config)
56 #define VIDIOC_OMAP3ISP_STAT_REQ \
57 	_IOWR('V', BASE_VIDIOC_PRIVATE + 6, struct omap3isp_stat_data)
58 #define VIDIOC_OMAP3ISP_STAT_EN \
59 	_IOWR('V', BASE_VIDIOC_PRIVATE + 7, unsigned long)
60 
61 /*
62  * Events
63  *
64  * V4L2_EVENT_OMAP3ISP_AEWB: AEWB statistics data ready
65  * V4L2_EVENT_OMAP3ISP_AF: AF statistics data ready
66  * V4L2_EVENT_OMAP3ISP_HIST: Histogram statistics data ready
67  */
68 
69 #define V4L2_EVENT_OMAP3ISP_CLASS	(V4L2_EVENT_PRIVATE_START | 0x100)
70 #define V4L2_EVENT_OMAP3ISP_AEWB	(V4L2_EVENT_OMAP3ISP_CLASS | 0x1)
71 #define V4L2_EVENT_OMAP3ISP_AF		(V4L2_EVENT_OMAP3ISP_CLASS | 0x2)
72 #define V4L2_EVENT_OMAP3ISP_HIST	(V4L2_EVENT_OMAP3ISP_CLASS | 0x3)
73 
74 struct omap3isp_stat_event_status {
75 	__u32 frame_number;
76 	__u16 config_counter;
77 	__u8 buf_err;
78 };
79 
80 /* AE/AWB related structures and flags*/
81 
82 /* H3A Range Constants */
83 #define OMAP3ISP_AEWB_MAX_SATURATION_LIM	1023
84 #define OMAP3ISP_AEWB_MIN_WIN_H			2
85 #define OMAP3ISP_AEWB_MAX_WIN_H			256
86 #define OMAP3ISP_AEWB_MIN_WIN_W			6
87 #define OMAP3ISP_AEWB_MAX_WIN_W			256
88 #define OMAP3ISP_AEWB_MIN_WINVC			1
89 #define OMAP3ISP_AEWB_MIN_WINHC			1
90 #define OMAP3ISP_AEWB_MAX_WINVC			128
91 #define OMAP3ISP_AEWB_MAX_WINHC			36
92 #define OMAP3ISP_AEWB_MAX_WINSTART		4095
93 #define OMAP3ISP_AEWB_MIN_SUB_INC		2
94 #define OMAP3ISP_AEWB_MAX_SUB_INC		32
95 #define OMAP3ISP_AEWB_MAX_BUF_SIZE		83600
96 
97 #define OMAP3ISP_AF_IIRSH_MIN			0
98 #define OMAP3ISP_AF_IIRSH_MAX			4095
99 #define OMAP3ISP_AF_PAXEL_HORIZONTAL_COUNT_MIN	1
100 #define OMAP3ISP_AF_PAXEL_HORIZONTAL_COUNT_MAX	36
101 #define OMAP3ISP_AF_PAXEL_VERTICAL_COUNT_MIN	1
102 #define OMAP3ISP_AF_PAXEL_VERTICAL_COUNT_MAX	128
103 #define OMAP3ISP_AF_PAXEL_INCREMENT_MIN		2
104 #define OMAP3ISP_AF_PAXEL_INCREMENT_MAX		32
105 #define OMAP3ISP_AF_PAXEL_HEIGHT_MIN		2
106 #define OMAP3ISP_AF_PAXEL_HEIGHT_MAX		256
107 #define OMAP3ISP_AF_PAXEL_WIDTH_MIN		16
108 #define OMAP3ISP_AF_PAXEL_WIDTH_MAX		256
109 #define OMAP3ISP_AF_PAXEL_HZSTART_MIN		1
110 #define OMAP3ISP_AF_PAXEL_HZSTART_MAX		4095
111 #define OMAP3ISP_AF_PAXEL_VTSTART_MIN		0
112 #define OMAP3ISP_AF_PAXEL_VTSTART_MAX		4095
113 #define OMAP3ISP_AF_THRESHOLD_MAX		255
114 #define OMAP3ISP_AF_COEF_MAX			4095
115 #define OMAP3ISP_AF_PAXEL_SIZE			48
116 #define OMAP3ISP_AF_MAX_BUF_SIZE		221184
117 
118 /**
119  * struct omap3isp_h3a_aewb_config - AE AWB configuration reset values
120  * saturation_limit: Saturation limit.
121  * @win_height: Window Height. Range 2 - 256, even values only.
122  * @win_width: Window Width. Range 6 - 256, even values only.
123  * @ver_win_count: Vertical Window Count. Range 1 - 128.
124  * @hor_win_count: Horizontal Window Count. Range 1 - 36.
125  * @ver_win_start: Vertical Window Start. Range 0 - 4095.
126  * @hor_win_start: Horizontal Window Start. Range 0 - 4095.
127  * @blk_ver_win_start: Black Vertical Windows Start. Range 0 - 4095.
128  * @blk_win_height: Black Window Height. Range 2 - 256, even values only.
129  * @subsample_ver_inc: Subsample Vertical points increment Range 2 - 32, even
130  *                     values only.
131  * @subsample_hor_inc: Subsample Horizontal points increment Range 2 - 32, even
132  *                     values only.
133  * @alaw_enable: AEW ALAW EN flag.
134  */
135 struct omap3isp_h3a_aewb_config {
136 	/*
137 	 * Common fields.
138 	 * They should be the first ones and must be in the same order as in
139 	 * ispstat_generic_config struct.
140 	 */
141 	__u32 buf_size;
142 	__u16 config_counter;
143 
144 	/* Private fields */
145 	__u16 saturation_limit;
146 	__u16 win_height;
147 	__u16 win_width;
148 	__u16 ver_win_count;
149 	__u16 hor_win_count;
150 	__u16 ver_win_start;
151 	__u16 hor_win_start;
152 	__u16 blk_ver_win_start;
153 	__u16 blk_win_height;
154 	__u16 subsample_ver_inc;
155 	__u16 subsample_hor_inc;
156 	__u8 alaw_enable;
157 };
158 
159 /**
160  * struct omap3isp_stat_data - Statistic data sent to or received from user
161  * @ts: Timestamp of returned framestats.
162  * @buf: Pointer to pass to user.
163  * @frame_number: Frame number of requested stats.
164  * @cur_frame: Current frame number being processed.
165  * @config_counter: Number of the configuration associated with the data.
166  */
167 struct omap3isp_stat_data {
168 	struct timeval ts;
169 	void __user *buf;
170 	__u32 buf_size;
171 	__u16 frame_number;
172 	__u16 cur_frame;
173 	__u16 config_counter;
174 };
175 
176 
177 /* Histogram related structs */
178 
179 /* Flags for number of bins */
180 #define OMAP3ISP_HIST_BINS_32		0
181 #define OMAP3ISP_HIST_BINS_64		1
182 #define OMAP3ISP_HIST_BINS_128		2
183 #define OMAP3ISP_HIST_BINS_256		3
184 
185 /* Number of bins * 4 colors * 4-bytes word */
186 #define OMAP3ISP_HIST_MEM_SIZE_BINS(n)	((1 << ((n)+5))*4*4)
187 
188 #define OMAP3ISP_HIST_MEM_SIZE		1024
189 #define OMAP3ISP_HIST_MIN_REGIONS	1
190 #define OMAP3ISP_HIST_MAX_REGIONS	4
191 #define OMAP3ISP_HIST_MAX_WB_GAIN	255
192 #define OMAP3ISP_HIST_MIN_WB_GAIN	0
193 #define OMAP3ISP_HIST_MAX_BIT_WIDTH	14
194 #define OMAP3ISP_HIST_MIN_BIT_WIDTH	8
195 #define OMAP3ISP_HIST_MAX_WG		4
196 #define OMAP3ISP_HIST_MAX_BUF_SIZE	4096
197 
198 /* Source */
199 #define OMAP3ISP_HIST_SOURCE_CCDC	0
200 #define OMAP3ISP_HIST_SOURCE_MEM	1
201 
202 /* CFA pattern */
203 #define OMAP3ISP_HIST_CFA_BAYER		0
204 #define OMAP3ISP_HIST_CFA_FOVEONX3	1
205 
206 struct omap3isp_hist_region {
207 	__u16 h_start;
208 	__u16 h_end;
209 	__u16 v_start;
210 	__u16 v_end;
211 };
212 
213 struct omap3isp_hist_config {
214 	/*
215 	 * Common fields.
216 	 * They should be the first ones and must be in the same order as in
217 	 * ispstat_generic_config struct.
218 	 */
219 	__u32 buf_size;
220 	__u16 config_counter;
221 
222 	__u8 num_acc_frames;	/* Num of image frames to be processed and
223 				   accumulated for each histogram frame */
224 	__u16 hist_bins;	/* number of bins: 32, 64, 128, or 256 */
225 	__u8 cfa;		/* BAYER or FOVEON X3 */
226 	__u8 wg[OMAP3ISP_HIST_MAX_WG];	/* White Balance Gain */
227 	__u8 num_regions;	/* number of regions to be configured */
228 	struct omap3isp_hist_region region[OMAP3ISP_HIST_MAX_REGIONS];
229 };
230 
231 /* Auto Focus related structs */
232 
233 #define OMAP3ISP_AF_NUM_COEF		11
234 
235 enum omap3isp_h3a_af_fvmode {
236 	OMAP3ISP_AF_MODE_SUMMED = 0,
237 	OMAP3ISP_AF_MODE_PEAK = 1
238 };
239 
240 /* Red, Green, and blue pixel location in the AF windows */
241 enum omap3isp_h3a_af_rgbpos {
242 	OMAP3ISP_AF_GR_GB_BAYER = 0,	/* GR and GB as Bayer pattern */
243 	OMAP3ISP_AF_RG_GB_BAYER = 1,	/* RG and GB as Bayer pattern */
244 	OMAP3ISP_AF_GR_BG_BAYER = 2,	/* GR and BG as Bayer pattern */
245 	OMAP3ISP_AF_RG_BG_BAYER = 3,	/* RG and BG as Bayer pattern */
246 	OMAP3ISP_AF_GG_RB_CUSTOM = 4,	/* GG and RB as custom pattern */
247 	OMAP3ISP_AF_RB_GG_CUSTOM = 5	/* RB and GG as custom pattern */
248 };
249 
250 /* Contains the information regarding the Horizontal Median Filter */
251 struct omap3isp_h3a_af_hmf {
252 	__u8 enable;	/* Status of Horizontal Median Filter */
253 	__u8 threshold;	/* Threshold Value for Horizontal Median Filter */
254 };
255 
256 /* Contains the information regarding the IIR Filters */
257 struct omap3isp_h3a_af_iir {
258 	__u16 h_start;			/* IIR horizontal start */
259 	__u16 coeff_set0[OMAP3ISP_AF_NUM_COEF];	/* Filter coefficient, set 0 */
260 	__u16 coeff_set1[OMAP3ISP_AF_NUM_COEF];	/* Filter coefficient, set 1 */
261 };
262 
263 /* Contains the information regarding the Paxels Structure in AF Engine */
264 struct omap3isp_h3a_af_paxel {
265 	__u16 h_start;	/* Horizontal Start Position */
266 	__u16 v_start;	/* Vertical Start Position */
267 	__u8 width;	/* Width of the Paxel */
268 	__u8 height;	/* Height of the Paxel */
269 	__u8 h_cnt;	/* Horizontal Count */
270 	__u8 v_cnt;	/* vertical Count */
271 	__u8 line_inc;	/* Line Increment */
272 };
273 
274 /* Contains the parameters required for hardware set up of AF Engine */
275 struct omap3isp_h3a_af_config {
276 	/*
277 	 * Common fields.
278 	 * They should be the first ones and must be in the same order as in
279 	 * ispstat_generic_config struct.
280 	 */
281 	__u32 buf_size;
282 	__u16 config_counter;
283 
284 	struct omap3isp_h3a_af_hmf hmf;		/* HMF configurations */
285 	struct omap3isp_h3a_af_iir iir;		/* IIR filter configurations */
286 	struct omap3isp_h3a_af_paxel paxel;	/* Paxel parameters */
287 	enum omap3isp_h3a_af_rgbpos rgb_pos;	/* RGB Positions */
288 	enum omap3isp_h3a_af_fvmode fvmode;	/* Accumulator mode */
289 	__u8 alaw_enable;			/* AF ALAW status */
290 };
291 
292 /* ISP CCDC structs */
293 
294 /* Abstraction layer CCDC configurations */
295 #define OMAP3ISP_CCDC_ALAW		(1 << 0)
296 #define OMAP3ISP_CCDC_LPF		(1 << 1)
297 #define OMAP3ISP_CCDC_BLCLAMP		(1 << 2)
298 #define OMAP3ISP_CCDC_BCOMP		(1 << 3)
299 #define OMAP3ISP_CCDC_FPC		(1 << 4)
300 #define OMAP3ISP_CCDC_CULL		(1 << 5)
301 #define OMAP3ISP_CCDC_CONFIG_LSC	(1 << 7)
302 #define OMAP3ISP_CCDC_TBL_LSC		(1 << 8)
303 
304 #define OMAP3ISP_RGB_MAX		3
305 
306 /* Enumeration constants for Alaw input width */
307 enum omap3isp_alaw_ipwidth {
308 	OMAP3ISP_ALAW_BIT12_3 = 0x3,
309 	OMAP3ISP_ALAW_BIT11_2 = 0x4,
310 	OMAP3ISP_ALAW_BIT10_1 = 0x5,
311 	OMAP3ISP_ALAW_BIT9_0 = 0x6
312 };
313 
314 /**
315  * struct omap3isp_ccdc_lsc_config - LSC configuration
316  * @offset: Table Offset of the gain table.
317  * @gain_mode_n: Vertical dimension of a paxel in LSC configuration.
318  * @gain_mode_m: Horizontal dimension of a paxel in LSC configuration.
319  * @gain_format: Gain table format.
320  * @fmtsph: Start pixel horizontal from start of the HS sync pulse.
321  * @fmtlnh: Number of pixels in horizontal direction to use for the data
322  *          reformatter.
323  * @fmtslv: Start line from start of VS sync pulse for the data reformatter.
324  * @fmtlnv: Number of lines in vertical direction for the data reformatter.
325  * @initial_x: X position, in pixels, of the first active pixel in reference
326  *             to the first active paxel. Must be an even number.
327  * @initial_y: Y position, in pixels, of the first active pixel in reference
328  *             to the first active paxel. Must be an even number.
329  * @size: Size of LSC gain table. Filled when loaded from userspace.
330  */
331 struct omap3isp_ccdc_lsc_config {
332 	__u16 offset;
333 	__u8 gain_mode_n;
334 	__u8 gain_mode_m;
335 	__u8 gain_format;
336 	__u16 fmtsph;
337 	__u16 fmtlnh;
338 	__u16 fmtslv;
339 	__u16 fmtlnv;
340 	__u8 initial_x;
341 	__u8 initial_y;
342 	__u32 size;
343 };
344 
345 /**
346  * struct omap3isp_ccdc_bclamp - Optical & Digital black clamp subtract
347  * @obgain: Optical black average gain.
348  * @obstpixel: Start Pixel w.r.t. HS pulse in Optical black sample.
349  * @oblines: Optical Black Sample lines.
350  * @oblen: Optical Black Sample Length.
351  * @dcsubval: Digital Black Clamp subtract value.
352  */
353 struct omap3isp_ccdc_bclamp {
354 	__u8 obgain;
355 	__u8 obstpixel;
356 	__u8 oblines;
357 	__u8 oblen;
358 	__u16 dcsubval;
359 };
360 
361 /**
362  * struct omap3isp_ccdc_fpc - Faulty Pixels Correction
363  * @fpnum: Number of faulty pixels to be corrected in the frame.
364  * @fpcaddr: Memory address of the FPC Table
365  */
366 struct omap3isp_ccdc_fpc {
367 	__u16 fpnum;
368 	__u32 fpcaddr;
369 };
370 
371 /**
372  * struct omap3isp_ccdc_blcomp - Black Level Compensation parameters
373  * @b_mg: B/Mg pixels. 2's complement. -128 to +127.
374  * @gb_g: Gb/G pixels. 2's complement. -128 to +127.
375  * @gr_cy: Gr/Cy pixels. 2's complement. -128 to +127.
376  * @r_ye: R/Ye pixels. 2's complement. -128 to +127.
377  */
378 struct omap3isp_ccdc_blcomp {
379 	__u8 b_mg;
380 	__u8 gb_g;
381 	__u8 gr_cy;
382 	__u8 r_ye;
383 };
384 
385 /**
386  * omap3isp_ccdc_culling - Culling parameters
387  * @v_pattern: Vertical culling pattern.
388  * @h_odd: Horizontal Culling pattern for odd lines.
389  * @h_even: Horizontal Culling pattern for even lines.
390  */
391 struct omap3isp_ccdc_culling {
392 	__u8 v_pattern;
393 	__u16 h_odd;
394 	__u16 h_even;
395 };
396 
397 /**
398  * omap3isp_ccdc_update_config - CCDC configuration
399  * @update: Specifies which CCDC registers should be updated.
400  * @flag: Specifies which CCDC functions should be enabled.
401  * @alawip: Enable/Disable A-Law compression.
402  * @bclamp: Black clamp control register.
403  * @blcomp: Black level compensation value for RGrGbB Pixels. 2's complement.
404  * @fpc: Number of faulty pixels corrected in the frame, address of FPC table.
405  * @cull: Cull control register.
406  * @lsc: Pointer to LSC gain table.
407  */
408 struct omap3isp_ccdc_update_config {
409 	__u16 update;
410 	__u16 flag;
411 	enum omap3isp_alaw_ipwidth alawip;
412 	struct omap3isp_ccdc_bclamp __user *bclamp;
413 	struct omap3isp_ccdc_blcomp __user *blcomp;
414 	struct omap3isp_ccdc_fpc __user *fpc;
415 	struct omap3isp_ccdc_lsc_config __user *lsc_cfg;
416 	struct omap3isp_ccdc_culling __user *cull;
417 	__u8 __user *lsc;
418 };
419 
420 /* Preview configurations */
421 #define OMAP3ISP_PREV_LUMAENH		(1 << 0)
422 #define OMAP3ISP_PREV_INVALAW		(1 << 1)
423 #define OMAP3ISP_PREV_HRZ_MED		(1 << 2)
424 #define OMAP3ISP_PREV_CFA		(1 << 3)
425 #define OMAP3ISP_PREV_CHROMA_SUPP	(1 << 4)
426 #define OMAP3ISP_PREV_WB		(1 << 5)
427 #define OMAP3ISP_PREV_BLKADJ		(1 << 6)
428 #define OMAP3ISP_PREV_RGB2RGB		(1 << 7)
429 #define OMAP3ISP_PREV_COLOR_CONV	(1 << 8)
430 #define OMAP3ISP_PREV_YC_LIMIT		(1 << 9)
431 #define OMAP3ISP_PREV_DEFECT_COR	(1 << 10)
432 /* Bit 11 was OMAP3ISP_PREV_GAMMABYPASS, now merged with OMAP3ISP_PREV_GAMMA */
433 #define OMAP3ISP_PREV_DRK_FRM_CAPTURE	(1 << 12)
434 #define OMAP3ISP_PREV_DRK_FRM_SUBTRACT	(1 << 13)
435 #define OMAP3ISP_PREV_LENS_SHADING	(1 << 14)
436 #define OMAP3ISP_PREV_NF		(1 << 15)
437 #define OMAP3ISP_PREV_GAMMA		(1 << 16)
438 
439 #define OMAP3ISP_PREV_NF_TBL_SIZE	64
440 #define OMAP3ISP_PREV_CFA_TBL_SIZE	576
441 #define OMAP3ISP_PREV_CFA_BLK_SIZE	(OMAP3ISP_PREV_CFA_TBL_SIZE / 4)
442 #define OMAP3ISP_PREV_GAMMA_TBL_SIZE	1024
443 #define OMAP3ISP_PREV_YENH_TBL_SIZE	128
444 
445 #define OMAP3ISP_PREV_DETECT_CORRECT_CHANNELS	4
446 
447 /**
448  * struct omap3isp_prev_hmed - Horizontal Median Filter
449  * @odddist: Distance between consecutive pixels of same color in the odd line.
450  * @evendist: Distance between consecutive pixels of same color in the even
451  *            line.
452  * @thres: Horizontal median filter threshold.
453  */
454 struct omap3isp_prev_hmed {
455 	__u8 odddist;
456 	__u8 evendist;
457 	__u8 thres;
458 };
459 
460 /*
461  * Enumeration for CFA Formats supported by preview
462  */
463 enum omap3isp_cfa_fmt {
464 	OMAP3ISP_CFAFMT_BAYER,
465 	OMAP3ISP_CFAFMT_SONYVGA,
466 	OMAP3ISP_CFAFMT_RGBFOVEON,
467 	OMAP3ISP_CFAFMT_DNSPL,
468 	OMAP3ISP_CFAFMT_HONEYCOMB,
469 	OMAP3ISP_CFAFMT_RRGGBBFOVEON
470 };
471 
472 /**
473  * struct omap3isp_prev_cfa - CFA Interpolation
474  * @format: CFA Format Enum value supported by preview.
475  * @gradthrs_vert: CFA Gradient Threshold - Vertical.
476  * @gradthrs_horz: CFA Gradient Threshold - Horizontal.
477  * @table: Pointer to the CFA table.
478  */
479 struct omap3isp_prev_cfa {
480 	enum omap3isp_cfa_fmt format;
481 	__u8 gradthrs_vert;
482 	__u8 gradthrs_horz;
483 	__u32 table[4][OMAP3ISP_PREV_CFA_BLK_SIZE];
484 };
485 
486 /**
487  * struct omap3isp_prev_csup - Chrominance Suppression
488  * @gain: Gain.
489  * @thres: Threshold.
490  * @hypf_en: Flag to enable/disable the High Pass Filter.
491  */
492 struct omap3isp_prev_csup {
493 	__u8 gain;
494 	__u8 thres;
495 	__u8 hypf_en;
496 };
497 
498 /**
499  * struct omap3isp_prev_wbal - White Balance
500  * @dgain: Digital gain (U10Q8).
501  * @coef3: White balance gain - COEF 3 (U8Q5).
502  * @coef2: White balance gain - COEF 2 (U8Q5).
503  * @coef1: White balance gain - COEF 1 (U8Q5).
504  * @coef0: White balance gain - COEF 0 (U8Q5).
505  */
506 struct omap3isp_prev_wbal {
507 	__u16 dgain;
508 	__u8 coef3;
509 	__u8 coef2;
510 	__u8 coef1;
511 	__u8 coef0;
512 };
513 
514 /**
515  * struct omap3isp_prev_blkadj - Black Level Adjustment
516  * @red: Black level offset adjustment for Red in 2's complement format
517  * @green: Black level offset adjustment for Green in 2's complement format
518  * @blue: Black level offset adjustment for Blue in 2's complement format
519  */
520 struct omap3isp_prev_blkadj {
521 	/*Black level offset adjustment for Red in 2's complement format */
522 	__u8 red;
523 	/*Black level offset adjustment for Green in 2's complement format */
524 	__u8 green;
525 	/* Black level offset adjustment for Blue in 2's complement format */
526 	__u8 blue;
527 };
528 
529 /**
530  * struct omap3isp_prev_rgbtorgb - RGB to RGB Blending
531  * @matrix: Blending values(S12Q8 format)
532  *              [RR] [GR] [BR]
533  *              [RG] [GG] [BG]
534  *              [RB] [GB] [BB]
535  * @offset: Blending offset value for R,G,B in 2's complement integer format.
536  */
537 struct omap3isp_prev_rgbtorgb {
538 	__u16 matrix[OMAP3ISP_RGB_MAX][OMAP3ISP_RGB_MAX];
539 	__u16 offset[OMAP3ISP_RGB_MAX];
540 };
541 
542 /**
543  * struct omap3isp_prev_csc - Color Space Conversion from RGB-YCbYCr
544  * @matrix: Color space conversion coefficients(S10Q8)
545  *              [CSCRY]  [CSCGY]  [CSCBY]
546  *              [CSCRCB] [CSCGCB] [CSCBCB]
547  *              [CSCRCR] [CSCGCR] [CSCBCR]
548  * @offset: CSC offset values for Y offset, CB offset and CR offset respectively
549  */
550 struct omap3isp_prev_csc {
551 	__u16 matrix[OMAP3ISP_RGB_MAX][OMAP3ISP_RGB_MAX];
552 	__s16 offset[OMAP3ISP_RGB_MAX];
553 };
554 
555 /**
556  * struct omap3isp_prev_yclimit - Y, C Value Limit
557  * @minC: Minimum C value
558  * @maxC: Maximum C value
559  * @minY: Minimum Y value
560  * @maxY: Maximum Y value
561  */
562 struct omap3isp_prev_yclimit {
563 	__u8 minC;
564 	__u8 maxC;
565 	__u8 minY;
566 	__u8 maxY;
567 };
568 
569 /**
570  * struct omap3isp_prev_dcor - Defect correction
571  * @couplet_mode_en: Flag to enable or disable the couplet dc Correction in NF
572  * @detect_correct: Thresholds for correction bit 0:10 detect 16:25 correct
573  */
574 struct omap3isp_prev_dcor {
575 	__u8 couplet_mode_en;
576 	__u32 detect_correct[OMAP3ISP_PREV_DETECT_CORRECT_CHANNELS];
577 };
578 
579 /**
580  * struct omap3isp_prev_nf - Noise Filter
581  * @spread: Spread value to be used in Noise Filter
582  * @table: Pointer to the Noise Filter table
583  */
584 struct omap3isp_prev_nf {
585 	__u8 spread;
586 	__u32 table[OMAP3ISP_PREV_NF_TBL_SIZE];
587 };
588 
589 /**
590  * struct omap3isp_prev_gtables - Gamma correction tables
591  * @red: Array for red gamma table.
592  * @green: Array for green gamma table.
593  * @blue: Array for blue gamma table.
594  */
595 struct omap3isp_prev_gtables {
596 	__u32 red[OMAP3ISP_PREV_GAMMA_TBL_SIZE];
597 	__u32 green[OMAP3ISP_PREV_GAMMA_TBL_SIZE];
598 	__u32 blue[OMAP3ISP_PREV_GAMMA_TBL_SIZE];
599 };
600 
601 /**
602  * struct omap3isp_prev_luma - Luma enhancement
603  * @table: Array for luma enhancement table.
604  */
605 struct omap3isp_prev_luma {
606 	__u32 table[OMAP3ISP_PREV_YENH_TBL_SIZE];
607 };
608 
609 /**
610  * struct omap3isp_prev_update_config - Preview engine configuration (user)
611  * @update: Specifies which ISP Preview registers should be updated.
612  * @flag: Specifies which ISP Preview functions should be enabled.
613  * @shading_shift: 3bit value of shift used in shading compensation.
614  * @luma: Pointer to luma enhancement structure.
615  * @hmed: Pointer to structure containing the odd and even distance.
616  *        between the pixels in the image along with the filter threshold.
617  * @cfa: Pointer to structure containing the CFA interpolation table, CFA.
618  *       format in the image, vertical and horizontal gradient threshold.
619  * @csup: Pointer to Structure for Chrominance Suppression coefficients.
620  * @wbal: Pointer to structure for White Balance.
621  * @blkadj: Pointer to structure for Black Adjustment.
622  * @rgb2rgb: Pointer to structure for RGB to RGB Blending.
623  * @csc: Pointer to structure for Color Space Conversion from RGB-YCbYCr.
624  * @yclimit: Pointer to structure for Y, C Value Limit.
625  * @dcor: Pointer to structure for defect correction.
626  * @nf: Pointer to structure for Noise Filter
627  * @gamma: Pointer to gamma structure.
628  */
629 struct omap3isp_prev_update_config {
630 	__u32 update;
631 	__u32 flag;
632 	__u32 shading_shift;
633 	struct omap3isp_prev_luma __user *luma;
634 	struct omap3isp_prev_hmed __user *hmed;
635 	struct omap3isp_prev_cfa __user *cfa;
636 	struct omap3isp_prev_csup __user *csup;
637 	struct omap3isp_prev_wbal __user *wbal;
638 	struct omap3isp_prev_blkadj __user *blkadj;
639 	struct omap3isp_prev_rgbtorgb __user *rgb2rgb;
640 	struct omap3isp_prev_csc __user *csc;
641 	struct omap3isp_prev_yclimit __user *yclimit;
642 	struct omap3isp_prev_dcor __user *dcor;
643 	struct omap3isp_prev_nf __user *nf;
644 	struct omap3isp_prev_gtables __user *gamma;
645 };
646 
647 #endif	/* OMAP3_ISP_USER_H */
648