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1 | /* |
2 | * ispresizer.c | |
3 | * | |
4 | * TI OMAP3 ISP - Resizer module | |
5 | * | |
6 | * Copyright (C) 2010 Nokia Corporation | |
7 | * Copyright (C) 2009 Texas Instruments, Inc | |
8 | * | |
9 | * Contacts: Laurent Pinchart <laurent.pinchart@ideasonboard.com> | |
10 | * Sakari Ailus <sakari.ailus@iki.fi> | |
11 | * | |
12 | * This program is free software; you can redistribute it and/or modify | |
13 | * it under the terms of the GNU General Public License version 2 as | |
14 | * published by the Free Software Foundation. | |
15 | * | |
16 | * This program is distributed in the hope that it will be useful, but | |
17 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
18 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
19 | * General Public License for more details. | |
20 | * | |
21 | * You should have received a copy of the GNU General Public License | |
22 | * along with this program; if not, write to the Free Software | |
23 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA | |
24 | * 02110-1301 USA | |
25 | */ | |
26 | ||
27 | #include <linux/device.h> | |
28 | #include <linux/mm.h> | |
29 | #include <linux/module.h> | |
30 | ||
31 | #include "isp.h" | |
32 | #include "ispreg.h" | |
33 | #include "ispresizer.h" | |
34 | ||
35 | /* | |
36 | * Resizer Constants | |
37 | */ | |
38 | #define MIN_RESIZE_VALUE 64 | |
39 | #define MID_RESIZE_VALUE 512 | |
40 | #define MAX_RESIZE_VALUE 1024 | |
41 | ||
42 | #define MIN_IN_WIDTH 32 | |
43 | #define MIN_IN_HEIGHT 32 | |
44 | #define MAX_IN_WIDTH_MEMORY_MODE 4095 | |
45 | #define MAX_IN_WIDTH_ONTHEFLY_MODE_ES1 1280 | |
46 | #define MAX_IN_WIDTH_ONTHEFLY_MODE_ES2 4095 | |
47 | #define MAX_IN_HEIGHT 4095 | |
48 | ||
49 | #define MIN_OUT_WIDTH 16 | |
50 | #define MIN_OUT_HEIGHT 2 | |
51 | #define MAX_OUT_HEIGHT 4095 | |
52 | ||
53 | /* | |
54 | * Resizer Use Constraints | |
55 | * "TRM ES3.1, table 12-46" | |
56 | */ | |
57 | #define MAX_4TAP_OUT_WIDTH_ES1 1280 | |
58 | #define MAX_7TAP_OUT_WIDTH_ES1 640 | |
59 | #define MAX_4TAP_OUT_WIDTH_ES2 3312 | |
60 | #define MAX_7TAP_OUT_WIDTH_ES2 1650 | |
61 | #define MAX_4TAP_OUT_WIDTH_3630 4096 | |
62 | #define MAX_7TAP_OUT_WIDTH_3630 2048 | |
63 | ||
64 | /* | |
65 | * Constants for ratio calculation | |
66 | */ | |
67 | #define RESIZE_DIVISOR 256 | |
68 | #define DEFAULT_PHASE 1 | |
69 | ||
70 | /* | |
71 | * Default (and only) configuration of filter coefficients. | |
72 | * 7-tap mode is for scale factors 0.25x to 0.5x. | |
73 | * 4-tap mode is for scale factors 0.5x to 4.0x. | |
74 | * There shouldn't be any reason to recalculate these, EVER. | |
75 | */ | |
76 | static const struct isprsz_coef filter_coefs = { | |
77 | /* For 8-phase 4-tap horizontal filter: */ | |
78 | { | |
79 | 0x0000, 0x0100, 0x0000, 0x0000, | |
80 | 0x03FA, 0x00F6, 0x0010, 0x0000, | |
81 | 0x03F9, 0x00DB, 0x002C, 0x0000, | |
82 | 0x03FB, 0x00B3, 0x0053, 0x03FF, | |
83 | 0x03FD, 0x0082, 0x0084, 0x03FD, | |
84 | 0x03FF, 0x0053, 0x00B3, 0x03FB, | |
85 | 0x0000, 0x002C, 0x00DB, 0x03F9, | |
86 | 0x0000, 0x0010, 0x00F6, 0x03FA | |
87 | }, | |
88 | /* For 8-phase 4-tap vertical filter: */ | |
89 | { | |
90 | 0x0000, 0x0100, 0x0000, 0x0000, | |
91 | 0x03FA, 0x00F6, 0x0010, 0x0000, | |
92 | 0x03F9, 0x00DB, 0x002C, 0x0000, | |
93 | 0x03FB, 0x00B3, 0x0053, 0x03FF, | |
94 | 0x03FD, 0x0082, 0x0084, 0x03FD, | |
95 | 0x03FF, 0x0053, 0x00B3, 0x03FB, | |
96 | 0x0000, 0x002C, 0x00DB, 0x03F9, | |
97 | 0x0000, 0x0010, 0x00F6, 0x03FA | |
98 | }, | |
99 | /* For 4-phase 7-tap horizontal filter: */ | |
100 | #define DUMMY 0 | |
101 | { | |
102 | 0x0004, 0x0023, 0x005A, 0x0058, 0x0023, 0x0004, 0x0000, DUMMY, | |
103 | 0x0002, 0x0018, 0x004d, 0x0060, 0x0031, 0x0008, 0x0000, DUMMY, | |
104 | 0x0001, 0x000f, 0x003f, 0x0062, 0x003f, 0x000f, 0x0001, DUMMY, | |
105 | 0x0000, 0x0008, 0x0031, 0x0060, 0x004d, 0x0018, 0x0002, DUMMY | |
106 | }, | |
107 | /* For 4-phase 7-tap vertical filter: */ | |
108 | { | |
109 | 0x0004, 0x0023, 0x005A, 0x0058, 0x0023, 0x0004, 0x0000, DUMMY, | |
110 | 0x0002, 0x0018, 0x004d, 0x0060, 0x0031, 0x0008, 0x0000, DUMMY, | |
111 | 0x0001, 0x000f, 0x003f, 0x0062, 0x003f, 0x000f, 0x0001, DUMMY, | |
112 | 0x0000, 0x0008, 0x0031, 0x0060, 0x004d, 0x0018, 0x0002, DUMMY | |
113 | } | |
114 | /* | |
115 | * The dummy padding is required in 7-tap mode because of how the | |
116 | * registers are arranged physically. | |
117 | */ | |
118 | #undef DUMMY | |
119 | }; | |
120 | ||
121 | /* | |
122 | * __resizer_get_format - helper function for getting resizer format | |
123 | * @res : pointer to resizer private structure | |
124 | * @pad : pad number | |
125 | * @fh : V4L2 subdev file handle | |
126 | * @which : wanted subdev format | |
127 | * return zero | |
128 | */ | |
129 | static struct v4l2_mbus_framefmt * | |
130 | __resizer_get_format(struct isp_res_device *res, struct v4l2_subdev_fh *fh, | |
131 | unsigned int pad, enum v4l2_subdev_format_whence which) | |
132 | { | |
133 | if (which == V4L2_SUBDEV_FORMAT_TRY) | |
134 | return v4l2_subdev_get_try_format(fh, pad); | |
135 | else | |
136 | return &res->formats[pad]; | |
137 | } | |
138 | ||
139 | /* | |
140 | * __resizer_get_crop - helper function for getting resizer crop rectangle | |
141 | * @res : pointer to resizer private structure | |
142 | * @fh : V4L2 subdev file handle | |
143 | * @which : wanted subdev crop rectangle | |
144 | */ | |
145 | static struct v4l2_rect * | |
146 | __resizer_get_crop(struct isp_res_device *res, struct v4l2_subdev_fh *fh, | |
147 | enum v4l2_subdev_format_whence which) | |
148 | { | |
149 | if (which == V4L2_SUBDEV_FORMAT_TRY) | |
150 | return v4l2_subdev_get_try_crop(fh, RESZ_PAD_SINK); | |
151 | else | |
152 | return &res->crop.request; | |
153 | } | |
154 | ||
155 | /* | |
156 | * resizer_set_filters - Set resizer filters | |
157 | * @res: Device context. | |
158 | * @h_coeff: horizontal coefficient | |
159 | * @v_coeff: vertical coefficient | |
160 | * Return none | |
161 | */ | |
162 | static void resizer_set_filters(struct isp_res_device *res, const u16 *h_coeff, | |
163 | const u16 *v_coeff) | |
164 | { | |
165 | struct isp_device *isp = to_isp_device(res); | |
166 | u32 startaddr_h, startaddr_v, tmp_h, tmp_v; | |
167 | int i; | |
168 | ||
169 | startaddr_h = ISPRSZ_HFILT10; | |
170 | startaddr_v = ISPRSZ_VFILT10; | |
171 | ||
172 | for (i = 0; i < COEFF_CNT; i += 2) { | |
173 | tmp_h = h_coeff[i] | | |
174 | (h_coeff[i + 1] << ISPRSZ_HFILT_COEF1_SHIFT); | |
175 | tmp_v = v_coeff[i] | | |
176 | (v_coeff[i + 1] << ISPRSZ_VFILT_COEF1_SHIFT); | |
177 | isp_reg_writel(isp, tmp_h, OMAP3_ISP_IOMEM_RESZ, startaddr_h); | |
178 | isp_reg_writel(isp, tmp_v, OMAP3_ISP_IOMEM_RESZ, startaddr_v); | |
179 | startaddr_h += 4; | |
180 | startaddr_v += 4; | |
181 | } | |
182 | } | |
183 | ||
184 | /* | |
185 | * resizer_set_bilinear - Chrominance horizontal algorithm select | |
186 | * @res: Device context. | |
187 | * @type: Filtering interpolation type. | |
188 | * | |
189 | * Filtering that is same as luminance processing is | |
190 | * intended only for downsampling, and bilinear interpolation | |
191 | * is intended only for upsampling. | |
192 | */ | |
193 | static void resizer_set_bilinear(struct isp_res_device *res, | |
194 | enum resizer_chroma_algo type) | |
195 | { | |
196 | struct isp_device *isp = to_isp_device(res); | |
197 | ||
198 | if (type == RSZ_BILINEAR) | |
199 | isp_reg_set(isp, OMAP3_ISP_IOMEM_RESZ, ISPRSZ_CNT, | |
200 | ISPRSZ_CNT_CBILIN); | |
201 | else | |
202 | isp_reg_clr(isp, OMAP3_ISP_IOMEM_RESZ, ISPRSZ_CNT, | |
203 | ISPRSZ_CNT_CBILIN); | |
204 | } | |
205 | ||
206 | /* | |
207 | * resizer_set_ycpos - Luminance and chrominance order | |
208 | * @res: Device context. | |
209 | * @order: order type. | |
210 | */ | |
211 | static void resizer_set_ycpos(struct isp_res_device *res, | |
212 | enum v4l2_mbus_pixelcode pixelcode) | |
213 | { | |
214 | struct isp_device *isp = to_isp_device(res); | |
215 | ||
216 | switch (pixelcode) { | |
217 | case V4L2_MBUS_FMT_YUYV8_1X16: | |
218 | isp_reg_set(isp, OMAP3_ISP_IOMEM_RESZ, ISPRSZ_CNT, | |
219 | ISPRSZ_CNT_YCPOS); | |
220 | break; | |
221 | case V4L2_MBUS_FMT_UYVY8_1X16: | |
222 | isp_reg_clr(isp, OMAP3_ISP_IOMEM_RESZ, ISPRSZ_CNT, | |
223 | ISPRSZ_CNT_YCPOS); | |
224 | break; | |
225 | default: | |
226 | return; | |
227 | } | |
228 | } | |
229 | ||
230 | /* | |
231 | * resizer_set_phase - Setup horizontal and vertical starting phase | |
232 | * @res: Device context. | |
233 | * @h_phase: horizontal phase parameters. | |
234 | * @v_phase: vertical phase parameters. | |
235 | * | |
236 | * Horizontal and vertical phase range is 0 to 7 | |
237 | */ | |
238 | static void resizer_set_phase(struct isp_res_device *res, u32 h_phase, | |
239 | u32 v_phase) | |
240 | { | |
241 | struct isp_device *isp = to_isp_device(res); | |
242 | u32 rgval = 0; | |
243 | ||
244 | rgval = isp_reg_readl(isp, OMAP3_ISP_IOMEM_RESZ, ISPRSZ_CNT) & | |
245 | ~(ISPRSZ_CNT_HSTPH_MASK | ISPRSZ_CNT_VSTPH_MASK); | |
246 | rgval |= (h_phase << ISPRSZ_CNT_HSTPH_SHIFT) & ISPRSZ_CNT_HSTPH_MASK; | |
247 | rgval |= (v_phase << ISPRSZ_CNT_VSTPH_SHIFT) & ISPRSZ_CNT_VSTPH_MASK; | |
248 | ||
249 | isp_reg_writel(isp, rgval, OMAP3_ISP_IOMEM_RESZ, ISPRSZ_CNT); | |
250 | } | |
251 | ||
252 | /* | |
253 | * resizer_set_luma - Setup luminance enhancer parameters | |
254 | * @res: Device context. | |
255 | * @luma: Structure for luminance enhancer parameters. | |
256 | * | |
257 | * Algorithm select: | |
258 | * 0x0: Disable | |
259 | * 0x1: [-1 2 -1]/2 high-pass filter | |
260 | * 0x2: [-1 -2 6 -2 -1]/4 high-pass filter | |
261 | * | |
262 | * Maximum gain: | |
263 | * The data is coded in U4Q4 representation. | |
264 | * | |
265 | * Slope: | |
266 | * The data is coded in U4Q4 representation. | |
267 | * | |
268 | * Coring offset: | |
269 | * The data is coded in U8Q0 representation. | |
270 | * | |
271 | * The new luminance value is computed as: | |
272 | * Y += HPF(Y) x max(GAIN, (HPF(Y) - CORE) x SLOP + 8) >> 4. | |
273 | */ | |
274 | static void resizer_set_luma(struct isp_res_device *res, | |
275 | struct resizer_luma_yenh *luma) | |
276 | { | |
277 | struct isp_device *isp = to_isp_device(res); | |
278 | u32 rgval = 0; | |
279 | ||
280 | rgval = (luma->algo << ISPRSZ_YENH_ALGO_SHIFT) | |
281 | & ISPRSZ_YENH_ALGO_MASK; | |
282 | rgval |= (luma->gain << ISPRSZ_YENH_GAIN_SHIFT) | |
283 | & ISPRSZ_YENH_GAIN_MASK; | |
284 | rgval |= (luma->slope << ISPRSZ_YENH_SLOP_SHIFT) | |
285 | & ISPRSZ_YENH_SLOP_MASK; | |
286 | rgval |= (luma->core << ISPRSZ_YENH_CORE_SHIFT) | |
287 | & ISPRSZ_YENH_CORE_MASK; | |
288 | ||
289 | isp_reg_writel(isp, rgval, OMAP3_ISP_IOMEM_RESZ, ISPRSZ_YENH); | |
290 | } | |
291 | ||
292 | /* | |
293 | * resizer_set_source - Input source select | |
294 | * @res: Device context. | |
295 | * @source: Input source type | |
296 | * | |
297 | * If this field is set to RESIZER_INPUT_VP, the resizer input is fed from | |
298 | * Preview/CCDC engine, otherwise from memory. | |
299 | */ | |
300 | static void resizer_set_source(struct isp_res_device *res, | |
301 | enum resizer_input_entity source) | |
302 | { | |
303 | struct isp_device *isp = to_isp_device(res); | |
304 | ||
305 | if (source == RESIZER_INPUT_MEMORY) | |
306 | isp_reg_set(isp, OMAP3_ISP_IOMEM_RESZ, ISPRSZ_CNT, | |
307 | ISPRSZ_CNT_INPSRC); | |
308 | else | |
309 | isp_reg_clr(isp, OMAP3_ISP_IOMEM_RESZ, ISPRSZ_CNT, | |
310 | ISPRSZ_CNT_INPSRC); | |
311 | } | |
312 | ||
313 | /* | |
314 | * resizer_set_ratio - Setup horizontal and vertical resizing value | |
315 | * @res: Device context. | |
316 | * @ratio: Structure for ratio parameters. | |
317 | * | |
318 | * Resizing range from 64 to 1024 | |
319 | */ | |
320 | static void resizer_set_ratio(struct isp_res_device *res, | |
321 | const struct resizer_ratio *ratio) | |
322 | { | |
323 | struct isp_device *isp = to_isp_device(res); | |
324 | const u16 *h_filter, *v_filter; | |
325 | u32 rgval = 0; | |
326 | ||
327 | rgval = isp_reg_readl(isp, OMAP3_ISP_IOMEM_RESZ, ISPRSZ_CNT) & | |
328 | ~(ISPRSZ_CNT_HRSZ_MASK | ISPRSZ_CNT_VRSZ_MASK); | |
329 | rgval |= ((ratio->horz - 1) << ISPRSZ_CNT_HRSZ_SHIFT) | |
330 | & ISPRSZ_CNT_HRSZ_MASK; | |
331 | rgval |= ((ratio->vert - 1) << ISPRSZ_CNT_VRSZ_SHIFT) | |
332 | & ISPRSZ_CNT_VRSZ_MASK; | |
333 | isp_reg_writel(isp, rgval, OMAP3_ISP_IOMEM_RESZ, ISPRSZ_CNT); | |
334 | ||
335 | /* prepare horizontal filter coefficients */ | |
336 | if (ratio->horz > MID_RESIZE_VALUE) | |
337 | h_filter = &filter_coefs.h_filter_coef_7tap[0]; | |
338 | else | |
339 | h_filter = &filter_coefs.h_filter_coef_4tap[0]; | |
340 | ||
341 | /* prepare vertical filter coefficients */ | |
342 | if (ratio->vert > MID_RESIZE_VALUE) | |
343 | v_filter = &filter_coefs.v_filter_coef_7tap[0]; | |
344 | else | |
345 | v_filter = &filter_coefs.v_filter_coef_4tap[0]; | |
346 | ||
347 | resizer_set_filters(res, h_filter, v_filter); | |
348 | } | |
349 | ||
350 | /* | |
351 | * resizer_set_dst_size - Setup the output height and width | |
352 | * @res: Device context. | |
353 | * @width: Output width. | |
354 | * @height: Output height. | |
355 | * | |
356 | * Width : | |
357 | * The value must be EVEN. | |
358 | * | |
359 | * Height: | |
360 | * The number of bytes written to SDRAM must be | |
361 | * a multiple of 16-bytes if the vertical resizing factor | |
362 | * is greater than 1x (upsizing) | |
363 | */ | |
364 | static void resizer_set_output_size(struct isp_res_device *res, | |
365 | u32 width, u32 height) | |
366 | { | |
367 | struct isp_device *isp = to_isp_device(res); | |
368 | u32 rgval = 0; | |
369 | ||
370 | dev_dbg(isp->dev, "Output size[w/h]: %dx%d\n", width, height); | |
371 | rgval = (width << ISPRSZ_OUT_SIZE_HORZ_SHIFT) | |
372 | & ISPRSZ_OUT_SIZE_HORZ_MASK; | |
373 | rgval |= (height << ISPRSZ_OUT_SIZE_VERT_SHIFT) | |
374 | & ISPRSZ_OUT_SIZE_VERT_MASK; | |
375 | isp_reg_writel(isp, rgval, OMAP3_ISP_IOMEM_RESZ, ISPRSZ_OUT_SIZE); | |
376 | } | |
377 | ||
378 | /* | |
379 | * resizer_set_output_offset - Setup memory offset for the output lines. | |
380 | * @res: Device context. | |
381 | * @offset: Memory offset. | |
382 | * | |
383 | * The 5 LSBs are forced to be zeros by the hardware to align on a 32-byte | |
384 | * boundary; the 5 LSBs are read-only. For optimal use of SDRAM bandwidth, | |
385 | * the SDRAM line offset must be set on a 256-byte boundary | |
386 | */ | |
387 | static void resizer_set_output_offset(struct isp_res_device *res, u32 offset) | |
388 | { | |
389 | struct isp_device *isp = to_isp_device(res); | |
390 | ||
391 | isp_reg_writel(isp, offset, OMAP3_ISP_IOMEM_RESZ, ISPRSZ_SDR_OUTOFF); | |
392 | } | |
393 | ||
394 | /* | |
395 | * resizer_set_start - Setup vertical and horizontal start position | |
396 | * @res: Device context. | |
397 | * @left: Horizontal start position. | |
398 | * @top: Vertical start position. | |
399 | * | |
400 | * Vertical start line: | |
401 | * This field makes sense only when the resizer obtains its input | |
402 | * from the preview engine/CCDC | |
403 | * | |
404 | * Horizontal start pixel: | |
405 | * Pixels are coded on 16 bits for YUV and 8 bits for color separate data. | |
406 | * When the resizer gets its input from SDRAM, this field must be set | |
407 | * to <= 15 for YUV 16-bit data and <= 31 for 8-bit color separate data | |
408 | */ | |
409 | static void resizer_set_start(struct isp_res_device *res, u32 left, u32 top) | |
410 | { | |
411 | struct isp_device *isp = to_isp_device(res); | |
412 | u32 rgval = 0; | |
413 | ||
414 | rgval = (left << ISPRSZ_IN_START_HORZ_ST_SHIFT) | |
415 | & ISPRSZ_IN_START_HORZ_ST_MASK; | |
416 | rgval |= (top << ISPRSZ_IN_START_VERT_ST_SHIFT) | |
417 | & ISPRSZ_IN_START_VERT_ST_MASK; | |
418 | ||
419 | isp_reg_writel(isp, rgval, OMAP3_ISP_IOMEM_RESZ, ISPRSZ_IN_START); | |
420 | } | |
421 | ||
422 | /* | |
423 | * resizer_set_input_size - Setup the input size | |
424 | * @res: Device context. | |
425 | * @width: The range is 0 to 4095 pixels | |
426 | * @height: The range is 0 to 4095 lines | |
427 | */ | |
428 | static void resizer_set_input_size(struct isp_res_device *res, | |
429 | u32 width, u32 height) | |
430 | { | |
431 | struct isp_device *isp = to_isp_device(res); | |
432 | u32 rgval = 0; | |
433 | ||
434 | dev_dbg(isp->dev, "Input size[w/h]: %dx%d\n", width, height); | |
435 | ||
436 | rgval = (width << ISPRSZ_IN_SIZE_HORZ_SHIFT) | |
437 | & ISPRSZ_IN_SIZE_HORZ_MASK; | |
438 | rgval |= (height << ISPRSZ_IN_SIZE_VERT_SHIFT) | |
439 | & ISPRSZ_IN_SIZE_VERT_MASK; | |
440 | ||
441 | isp_reg_writel(isp, rgval, OMAP3_ISP_IOMEM_RESZ, ISPRSZ_IN_SIZE); | |
442 | } | |
443 | ||
444 | /* | |
445 | * resizer_set_src_offs - Setup the memory offset for the input lines | |
446 | * @res: Device context. | |
447 | * @offset: Memory offset. | |
448 | * | |
449 | * The 5 LSBs are forced to be zeros by the hardware to align on a 32-byte | |
450 | * boundary; the 5 LSBs are read-only. This field must be programmed to be | |
451 | * 0x0 if the resizer input is from preview engine/CCDC. | |
452 | */ | |
453 | static void resizer_set_input_offset(struct isp_res_device *res, u32 offset) | |
454 | { | |
455 | struct isp_device *isp = to_isp_device(res); | |
456 | ||
457 | isp_reg_writel(isp, offset, OMAP3_ISP_IOMEM_RESZ, ISPRSZ_SDR_INOFF); | |
458 | } | |
459 | ||
460 | /* | |
461 | * resizer_set_intype - Input type select | |
462 | * @res: Device context. | |
463 | * @type: Pixel format type. | |
464 | */ | |
465 | static void resizer_set_intype(struct isp_res_device *res, | |
466 | enum resizer_colors_type type) | |
467 | { | |
468 | struct isp_device *isp = to_isp_device(res); | |
469 | ||
470 | if (type == RSZ_COLOR8) | |
471 | isp_reg_set(isp, OMAP3_ISP_IOMEM_RESZ, ISPRSZ_CNT, | |
472 | ISPRSZ_CNT_INPTYP); | |
473 | else | |
474 | isp_reg_clr(isp, OMAP3_ISP_IOMEM_RESZ, ISPRSZ_CNT, | |
475 | ISPRSZ_CNT_INPTYP); | |
476 | } | |
477 | ||
478 | /* | |
479 | * __resizer_set_inaddr - Helper function for set input address | |
480 | * @res : pointer to resizer private data structure | |
481 | * @addr: input address | |
482 | * return none | |
483 | */ | |
484 | static void __resizer_set_inaddr(struct isp_res_device *res, u32 addr) | |
485 | { | |
486 | struct isp_device *isp = to_isp_device(res); | |
487 | ||
488 | isp_reg_writel(isp, addr, OMAP3_ISP_IOMEM_RESZ, ISPRSZ_SDR_INADD); | |
489 | } | |
490 | ||
491 | /* | |
492 | * The data rate at the horizontal resizer output must not exceed half the | |
493 | * functional clock or 100 MP/s, whichever is lower. According to the TRM | |
494 | * there's no similar requirement for the vertical resizer output. However | |
495 | * experience showed that vertical upscaling by 4 leads to SBL overflows (with | |
496 | * data rates at the resizer output exceeding 300 MP/s). Limiting the resizer | |
497 | * output data rate to the functional clock or 200 MP/s, whichever is lower, | |
498 | * seems to get rid of SBL overflows. | |
499 | * | |
500 | * The maximum data rate at the output of the horizontal resizer can thus be | |
501 | * computed with | |
502 | * | |
503 | * max intermediate rate <= L3 clock * input height / output height | |
504 | * max intermediate rate <= L3 clock / 2 | |
505 | * | |
506 | * The maximum data rate at the resizer input is then | |
507 | * | |
508 | * max input rate <= max intermediate rate * input width / output width | |
509 | * | |
510 | * where the input width and height are the resizer input crop rectangle size. | |
511 | * The TRM doesn't clearly explain if that's a maximum instant data rate or a | |
512 | * maximum average data rate. | |
513 | */ | |
514 | void omap3isp_resizer_max_rate(struct isp_res_device *res, | |
515 | unsigned int *max_rate) | |
516 | { | |
517 | struct isp_pipeline *pipe = to_isp_pipeline(&res->subdev.entity); | |
518 | const struct v4l2_mbus_framefmt *ofmt = &res->formats[RESZ_PAD_SOURCE]; | |
519 | unsigned long limit = min(pipe->l3_ick, 200000000UL); | |
520 | unsigned long clock; | |
521 | ||
522 | clock = div_u64((u64)limit * res->crop.active.height, ofmt->height); | |
523 | clock = min(clock, limit / 2); | |
524 | *max_rate = div_u64((u64)clock * res->crop.active.width, ofmt->width); | |
525 | } | |
526 | ||
527 | /* | |
528 | * When the resizer processes images from memory, the driver must slow down read | |
529 | * requests on the input to at least comply with the internal data rate | |
530 | * requirements. If the application real-time requirements can cope with slower | |
531 | * processing, the resizer can be slowed down even more to put less pressure on | |
532 | * the overall system. | |
533 | * | |
534 | * When the resizer processes images on the fly (either from the CCDC or the | |
535 | * preview module), the same data rate requirements apply but they can't be | |
536 | * enforced at the resizer level. The image input module (sensor, CCP2 or | |
537 | * preview module) must not provide image data faster than the resizer can | |
538 | * process. | |
539 | * | |
540 | * For live image pipelines, the data rate is set by the frame format, size and | |
541 | * rate. The sensor output frame rate must not exceed the maximum resizer data | |
542 | * rate. | |
543 | * | |
544 | * The resizer slows down read requests by inserting wait cycles in the SBL | |
545 | * requests. The maximum number of 256-byte requests per second can be computed | |
546 | * as (the data rate is multiplied by 2 to convert from pixels per second to | |
547 | * bytes per second) | |
548 | * | |
549 | * request per second = data rate * 2 / 256 | |
550 | * cycles per request = cycles per second / requests per second | |
551 | * | |
552 | * The number of cycles per second is controlled by the L3 clock, leading to | |
553 | * | |
554 | * cycles per request = L3 frequency / 2 * 256 / data rate | |
555 | */ | |
556 | static void resizer_adjust_bandwidth(struct isp_res_device *res) | |
557 | { | |
558 | struct isp_pipeline *pipe = to_isp_pipeline(&res->subdev.entity); | |
559 | struct isp_device *isp = to_isp_device(res); | |
560 | unsigned long l3_ick = pipe->l3_ick; | |
561 | struct v4l2_fract *timeperframe; | |
562 | unsigned int cycles_per_frame; | |
563 | unsigned int requests_per_frame; | |
564 | unsigned int cycles_per_request; | |
565 | unsigned int granularity; | |
566 | unsigned int minimum; | |
567 | unsigned int maximum; | |
568 | unsigned int value; | |
569 | ||
570 | if (res->input != RESIZER_INPUT_MEMORY) { | |
571 | isp_reg_clr(isp, OMAP3_ISP_IOMEM_SBL, ISPSBL_SDR_REQ_EXP, | |
572 | ISPSBL_SDR_REQ_RSZ_EXP_MASK); | |
573 | return; | |
574 | } | |
575 | ||
576 | switch (isp->revision) { | |
577 | case ISP_REVISION_1_0: | |
578 | case ISP_REVISION_2_0: | |
579 | default: | |
580 | granularity = 1024; | |
581 | break; | |
582 | ||
583 | case ISP_REVISION_15_0: | |
584 | granularity = 32; | |
585 | break; | |
586 | } | |
587 | ||
588 | /* Compute the minimum number of cycles per request, based on the | |
589 | * pipeline maximum data rate. This is an absolute lower bound if we | |
590 | * don't want SBL overflows, so round the value up. | |
591 | */ | |
592 | cycles_per_request = div_u64((u64)l3_ick / 2 * 256 + pipe->max_rate - 1, | |
593 | pipe->max_rate); | |
594 | minimum = DIV_ROUND_UP(cycles_per_request, granularity); | |
595 | ||
596 | /* Compute the maximum number of cycles per request, based on the | |
597 | * requested frame rate. This is a soft upper bound to achieve a frame | |
598 | * rate equal or higher than the requested value, so round the value | |
599 | * down. | |
600 | */ | |
601 | timeperframe = &pipe->max_timeperframe; | |
602 | ||
603 | requests_per_frame = DIV_ROUND_UP(res->crop.active.width * 2, 256) | |
604 | * res->crop.active.height; | |
605 | cycles_per_frame = div_u64((u64)l3_ick * timeperframe->numerator, | |
606 | timeperframe->denominator); | |
607 | cycles_per_request = cycles_per_frame / requests_per_frame; | |
608 | ||
609 | maximum = cycles_per_request / granularity; | |
610 | ||
611 | value = max(minimum, maximum); | |
612 | ||
613 | dev_dbg(isp->dev, "%s: cycles per request = %u\n", __func__, value); | |
614 | isp_reg_clr_set(isp, OMAP3_ISP_IOMEM_SBL, ISPSBL_SDR_REQ_EXP, | |
615 | ISPSBL_SDR_REQ_RSZ_EXP_MASK, | |
616 | value << ISPSBL_SDR_REQ_RSZ_EXP_SHIFT); | |
617 | } | |
618 | ||
619 | /* | |
620 | * omap3isp_resizer_busy - Checks if ISP resizer is busy. | |
621 | * | |
622 | * Returns busy field from ISPRSZ_PCR register. | |
623 | */ | |
624 | int omap3isp_resizer_busy(struct isp_res_device *res) | |
625 | { | |
626 | struct isp_device *isp = to_isp_device(res); | |
627 | ||
628 | return isp_reg_readl(isp, OMAP3_ISP_IOMEM_RESZ, ISPRSZ_PCR) & | |
629 | ISPRSZ_PCR_BUSY; | |
630 | } | |
631 | ||
632 | /* | |
633 | * resizer_set_inaddr - Sets the memory address of the input frame. | |
634 | * @addr: 32bit memory address aligned on 32byte boundary. | |
635 | */ | |
636 | static void resizer_set_inaddr(struct isp_res_device *res, u32 addr) | |
637 | { | |
638 | res->addr_base = addr; | |
639 | ||
640 | /* This will handle crop settings in stream off state */ | |
641 | if (res->crop_offset) | |
642 | addr += res->crop_offset & ~0x1f; | |
643 | ||
644 | __resizer_set_inaddr(res, addr); | |
645 | } | |
646 | ||
647 | /* | |
648 | * Configures the memory address to which the output frame is written. | |
649 | * @addr: 32bit memory address aligned on 32byte boundary. | |
650 | * Note: For SBL efficiency reasons the address should be on a 256-byte | |
651 | * boundary. | |
652 | */ | |
653 | static void resizer_set_outaddr(struct isp_res_device *res, u32 addr) | |
654 | { | |
655 | struct isp_device *isp = to_isp_device(res); | |
656 | ||
657 | /* | |
658 | * Set output address. This needs to be in its own function | |
659 | * because it changes often. | |
660 | */ | |
661 | isp_reg_writel(isp, addr << ISPRSZ_SDR_OUTADD_ADDR_SHIFT, | |
662 | OMAP3_ISP_IOMEM_RESZ, ISPRSZ_SDR_OUTADD); | |
663 | } | |
664 | ||
665 | /* | |
666 | * resizer_print_status - Prints the values of the resizer module registers. | |
667 | */ | |
668 | #define RSZ_PRINT_REGISTER(isp, name)\ | |
669 | dev_dbg(isp->dev, "###RSZ " #name "=0x%08x\n", \ | |
670 | isp_reg_readl(isp, OMAP3_ISP_IOMEM_RESZ, ISPRSZ_##name)) | |
671 | ||
672 | static void resizer_print_status(struct isp_res_device *res) | |
673 | { | |
674 | struct isp_device *isp = to_isp_device(res); | |
675 | ||
676 | dev_dbg(isp->dev, "-------------Resizer Register dump----------\n"); | |
677 | ||
678 | RSZ_PRINT_REGISTER(isp, PCR); | |
679 | RSZ_PRINT_REGISTER(isp, CNT); | |
680 | RSZ_PRINT_REGISTER(isp, OUT_SIZE); | |
681 | RSZ_PRINT_REGISTER(isp, IN_START); | |
682 | RSZ_PRINT_REGISTER(isp, IN_SIZE); | |
683 | RSZ_PRINT_REGISTER(isp, SDR_INADD); | |
684 | RSZ_PRINT_REGISTER(isp, SDR_INOFF); | |
685 | RSZ_PRINT_REGISTER(isp, SDR_OUTADD); | |
686 | RSZ_PRINT_REGISTER(isp, SDR_OUTOFF); | |
687 | RSZ_PRINT_REGISTER(isp, YENH); | |
688 | ||
689 | dev_dbg(isp->dev, "--------------------------------------------\n"); | |
690 | } | |
691 | ||
692 | /* | |
693 | * resizer_calc_ratios - Helper function for calculate resizer ratios | |
694 | * @res: pointer to resizer private data structure | |
695 | * @input: input frame size | |
696 | * @output: output frame size | |
697 | * @ratio : return calculated ratios | |
698 | * return none | |
699 | * | |
700 | * The resizer uses a polyphase sample rate converter. The upsampling filter | |
701 | * has a fixed number of phases that depend on the resizing ratio. As the ratio | |
702 | * computation depends on the number of phases, we need to compute a first | |
703 | * approximation and then refine it. | |
704 | * | |
705 | * The input/output/ratio relationship is given by the OMAP34xx TRM: | |
706 | * | |
707 | * - 8-phase, 4-tap mode (RSZ = 64 ~ 512) | |
708 | * iw = (32 * sph + (ow - 1) * hrsz + 16) >> 8 + 7 | |
709 | * ih = (32 * spv + (oh - 1) * vrsz + 16) >> 8 + 4 | |
710 | * - 4-phase, 7-tap mode (RSZ = 513 ~ 1024) | |
711 | * iw = (64 * sph + (ow - 1) * hrsz + 32) >> 8 + 7 | |
712 | * ih = (64 * spv + (oh - 1) * vrsz + 32) >> 8 + 7 | |
713 | * | |
714 | * iw and ih are the input width and height after cropping. Those equations need | |
715 | * to be satisfied exactly for the resizer to work correctly. | |
716 | * | |
717 | * Reverting the equations, we can compute the resizing ratios with | |
718 | * | |
719 | * - 8-phase, 4-tap mode | |
720 | * hrsz = ((iw - 7) * 256 - 16 - 32 * sph) / (ow - 1) | |
721 | * vrsz = ((ih - 4) * 256 - 16 - 32 * spv) / (oh - 1) | |
722 | * - 4-phase, 7-tap mode | |
723 | * hrsz = ((iw - 7) * 256 - 32 - 64 * sph) / (ow - 1) | |
724 | * vrsz = ((ih - 7) * 256 - 32 - 64 * spv) / (oh - 1) | |
725 | * | |
726 | * The ratios are integer values, and must be rounded down to ensure that the | |
727 | * cropped input size is not bigger than the uncropped input size. As the ratio | |
728 | * in 7-tap mode is always smaller than the ratio in 4-tap mode, we can use the | |
729 | * 7-tap mode equations to compute a ratio approximation. | |
730 | * | |
731 | * We first clamp the output size according to the hardware capabilitie to avoid | |
732 | * auto-cropping the input more than required to satisfy the TRM equations. The | |
733 | * minimum output size is achieved with a scaling factor of 1024. It is thus | |
734 | * computed using the 7-tap equations. | |
735 | * | |
736 | * min ow = ((iw - 7) * 256 - 32 - 64 * sph) / 1024 + 1 | |
737 | * min oh = ((ih - 7) * 256 - 32 - 64 * spv) / 1024 + 1 | |
738 | * | |
739 | * Similarly, the maximum output size is achieved with a scaling factor of 64 | |
740 | * and computed using the 4-tap equations. | |
741 | * | |
742 | * max ow = ((iw - 7) * 256 + 255 - 16 - 32 * sph) / 64 + 1 | |
743 | * max oh = ((ih - 4) * 256 + 255 - 16 - 32 * spv) / 64 + 1 | |
744 | * | |
745 | * The additional +255 term compensates for the round down operation performed | |
746 | * by the TRM equations when shifting the value right by 8 bits. | |
747 | * | |
748 | * We then compute and clamp the ratios (x1/4 ~ x4). Clamping the output size to | |
749 | * the maximum value guarantees that the ratio value will never be smaller than | |
750 | * the minimum, but it could still slightly exceed the maximum. Clamping the | |
751 | * ratio will thus result in a resizing factor slightly larger than the | |
752 | * requested value. | |
753 | * | |
25985edc | 754 | * To accommodate that, and make sure the TRM equations are satisfied exactly, we |
de1135d4 LP |
755 | * compute the input crop rectangle as the last step. |
756 | * | |
757 | * As if the situation wasn't complex enough, the maximum output width depends | |
758 | * on the vertical resizing ratio. Fortunately, the output height doesn't | |
759 | * depend on the horizontal resizing ratio. We can then start by computing the | |
760 | * output height and the vertical ratio, and then move to computing the output | |
761 | * width and the horizontal ratio. | |
762 | */ | |
763 | static void resizer_calc_ratios(struct isp_res_device *res, | |
764 | struct v4l2_rect *input, | |
765 | struct v4l2_mbus_framefmt *output, | |
766 | struct resizer_ratio *ratio) | |
767 | { | |
768 | struct isp_device *isp = to_isp_device(res); | |
769 | const unsigned int spv = DEFAULT_PHASE; | |
770 | const unsigned int sph = DEFAULT_PHASE; | |
771 | unsigned int upscaled_width; | |
772 | unsigned int upscaled_height; | |
773 | unsigned int min_width; | |
774 | unsigned int min_height; | |
775 | unsigned int max_width; | |
776 | unsigned int max_height; | |
777 | unsigned int width_alignment; | |
778 | ||
779 | /* | |
780 | * Clamp the output height based on the hardware capabilities and | |
781 | * compute the vertical resizing ratio. | |
782 | */ | |
783 | min_height = ((input->height - 7) * 256 - 32 - 64 * spv) / 1024 + 1; | |
784 | min_height = max_t(unsigned int, min_height, MIN_OUT_HEIGHT); | |
785 | max_height = ((input->height - 4) * 256 + 255 - 16 - 32 * spv) / 64 + 1; | |
786 | max_height = min_t(unsigned int, max_height, MAX_OUT_HEIGHT); | |
787 | output->height = clamp(output->height, min_height, max_height); | |
788 | ||
789 | ratio->vert = ((input->height - 7) * 256 - 32 - 64 * spv) | |
790 | / (output->height - 1); | |
791 | ratio->vert = clamp_t(unsigned int, ratio->vert, | |
792 | MIN_RESIZE_VALUE, MAX_RESIZE_VALUE); | |
793 | ||
794 | if (ratio->vert <= MID_RESIZE_VALUE) { | |
795 | upscaled_height = (output->height - 1) * ratio->vert | |
796 | + 32 * spv + 16; | |
797 | input->height = (upscaled_height >> 8) + 4; | |
798 | } else { | |
799 | upscaled_height = (output->height - 1) * ratio->vert | |
800 | + 64 * spv + 32; | |
801 | input->height = (upscaled_height >> 8) + 7; | |
802 | } | |
803 | ||
804 | /* | |
805 | * Compute the minimum and maximum output widths based on the hardware | |
806 | * capabilities. The maximum depends on the vertical resizing ratio. | |
807 | */ | |
808 | min_width = ((input->width - 7) * 256 - 32 - 64 * sph) / 1024 + 1; | |
809 | min_width = max_t(unsigned int, min_width, MIN_OUT_WIDTH); | |
810 | ||
811 | if (ratio->vert <= MID_RESIZE_VALUE) { | |
812 | switch (isp->revision) { | |
813 | case ISP_REVISION_1_0: | |
814 | max_width = MAX_4TAP_OUT_WIDTH_ES1; | |
815 | break; | |
816 | ||
817 | case ISP_REVISION_2_0: | |
818 | default: | |
819 | max_width = MAX_4TAP_OUT_WIDTH_ES2; | |
820 | break; | |
821 | ||
822 | case ISP_REVISION_15_0: | |
823 | max_width = MAX_4TAP_OUT_WIDTH_3630; | |
824 | break; | |
825 | } | |
826 | } else { | |
827 | switch (isp->revision) { | |
828 | case ISP_REVISION_1_0: | |
829 | max_width = MAX_7TAP_OUT_WIDTH_ES1; | |
830 | break; | |
831 | ||
832 | case ISP_REVISION_2_0: | |
833 | default: | |
834 | max_width = MAX_7TAP_OUT_WIDTH_ES2; | |
835 | break; | |
836 | ||
837 | case ISP_REVISION_15_0: | |
838 | max_width = MAX_7TAP_OUT_WIDTH_3630; | |
839 | break; | |
840 | } | |
841 | } | |
842 | max_width = min(((input->width - 7) * 256 + 255 - 16 - 32 * sph) / 64 | |
843 | + 1, max_width); | |
844 | ||
845 | /* | |
846 | * The output width must be even, and must be a multiple of 16 bytes | |
847 | * when upscaling vertically. Clamp the output width to the valid range. | |
848 | * Take the alignment into account (the maximum width in 7-tap mode on | |
849 | * ES2 isn't a multiple of 8) and align the result up to make sure it | |
850 | * won't be smaller than the minimum. | |
851 | */ | |
852 | width_alignment = ratio->vert < 256 ? 8 : 2; | |
853 | output->width = clamp(output->width, min_width, | |
854 | max_width & ~(width_alignment - 1)); | |
855 | output->width = ALIGN(output->width, width_alignment); | |
856 | ||
857 | ratio->horz = ((input->width - 7) * 256 - 32 - 64 * sph) | |
858 | / (output->width - 1); | |
859 | ratio->horz = clamp_t(unsigned int, ratio->horz, | |
860 | MIN_RESIZE_VALUE, MAX_RESIZE_VALUE); | |
861 | ||
862 | if (ratio->horz <= MID_RESIZE_VALUE) { | |
863 | upscaled_width = (output->width - 1) * ratio->horz | |
864 | + 32 * sph + 16; | |
865 | input->width = (upscaled_width >> 8) + 7; | |
866 | } else { | |
867 | upscaled_width = (output->width - 1) * ratio->horz | |
868 | + 64 * sph + 32; | |
869 | input->width = (upscaled_width >> 8) + 7; | |
870 | } | |
871 | } | |
872 | ||
873 | /* | |
874 | * resizer_set_crop_params - Setup hardware with cropping parameters | |
875 | * @res : resizer private structure | |
876 | * @crop_rect : current crop rectangle | |
877 | * @ratio : resizer ratios | |
878 | * return none | |
879 | */ | |
880 | static void resizer_set_crop_params(struct isp_res_device *res, | |
881 | const struct v4l2_mbus_framefmt *input, | |
882 | const struct v4l2_mbus_framefmt *output) | |
883 | { | |
884 | resizer_set_ratio(res, &res->ratio); | |
885 | ||
886 | /* Set chrominance horizontal algorithm */ | |
887 | if (res->ratio.horz >= RESIZE_DIVISOR) | |
888 | resizer_set_bilinear(res, RSZ_THE_SAME); | |
889 | else | |
890 | resizer_set_bilinear(res, RSZ_BILINEAR); | |
891 | ||
892 | resizer_adjust_bandwidth(res); | |
893 | ||
894 | if (res->input == RESIZER_INPUT_MEMORY) { | |
895 | /* Calculate additional offset for crop */ | |
896 | res->crop_offset = (res->crop.active.top * input->width + | |
897 | res->crop.active.left) * 2; | |
898 | /* | |
899 | * Write lowest 4 bits of horizontal pixel offset (in pixels), | |
900 | * vertical start must be 0. | |
901 | */ | |
902 | resizer_set_start(res, (res->crop_offset / 2) & 0xf, 0); | |
903 | ||
904 | /* | |
905 | * Set start (read) address for cropping, in bytes. | |
906 | * Lowest 5 bits must be zero. | |
907 | */ | |
908 | __resizer_set_inaddr(res, | |
909 | res->addr_base + (res->crop_offset & ~0x1f)); | |
910 | } else { | |
911 | /* | |
912 | * Set vertical start line and horizontal starting pixel. | |
913 | * If the input is from CCDC/PREV, horizontal start field is | |
914 | * in bytes (twice number of pixels). | |
915 | */ | |
916 | resizer_set_start(res, res->crop.active.left * 2, | |
917 | res->crop.active.top); | |
918 | /* Input address and offset must be 0 for preview/ccdc input */ | |
919 | __resizer_set_inaddr(res, 0); | |
920 | resizer_set_input_offset(res, 0); | |
921 | } | |
922 | ||
923 | /* Set the input size */ | |
924 | resizer_set_input_size(res, res->crop.active.width, | |
925 | res->crop.active.height); | |
926 | } | |
927 | ||
928 | static void resizer_configure(struct isp_res_device *res) | |
929 | { | |
930 | struct v4l2_mbus_framefmt *informat, *outformat; | |
931 | struct resizer_luma_yenh luma = {0, 0, 0, 0}; | |
932 | ||
933 | resizer_set_source(res, res->input); | |
934 | ||
935 | informat = &res->formats[RESZ_PAD_SINK]; | |
936 | outformat = &res->formats[RESZ_PAD_SOURCE]; | |
937 | ||
938 | /* RESZ_PAD_SINK */ | |
939 | if (res->input == RESIZER_INPUT_VP) | |
940 | resizer_set_input_offset(res, 0); | |
941 | else | |
942 | resizer_set_input_offset(res, ALIGN(informat->width, 0x10) * 2); | |
943 | ||
944 | /* YUV422 interleaved, default phase, no luma enhancement */ | |
945 | resizer_set_intype(res, RSZ_YUV422); | |
946 | resizer_set_ycpos(res, informat->code); | |
947 | resizer_set_phase(res, DEFAULT_PHASE, DEFAULT_PHASE); | |
948 | resizer_set_luma(res, &luma); | |
949 | ||
950 | /* RESZ_PAD_SOURCE */ | |
951 | resizer_set_output_offset(res, ALIGN(outformat->width * 2, 32)); | |
952 | resizer_set_output_size(res, outformat->width, outformat->height); | |
953 | ||
954 | resizer_set_crop_params(res, informat, outformat); | |
955 | } | |
956 | ||
957 | /* ----------------------------------------------------------------------------- | |
958 | * Interrupt handling | |
959 | */ | |
960 | ||
961 | static void resizer_enable_oneshot(struct isp_res_device *res) | |
962 | { | |
963 | struct isp_device *isp = to_isp_device(res); | |
964 | ||
965 | isp_reg_set(isp, OMAP3_ISP_IOMEM_RESZ, ISPRSZ_PCR, | |
966 | ISPRSZ_PCR_ENABLE | ISPRSZ_PCR_ONESHOT); | |
967 | } | |
968 | ||
969 | void omap3isp_resizer_isr_frame_sync(struct isp_res_device *res) | |
970 | { | |
971 | /* | |
972 | * If ISP_VIDEO_DMAQUEUE_QUEUED is set, DMA queue had an underrun | |
973 | * condition, the module was paused and now we have a buffer queued | |
974 | * on the output again. Restart the pipeline if running in continuous | |
975 | * mode. | |
976 | */ | |
977 | if (res->state == ISP_PIPELINE_STREAM_CONTINUOUS && | |
978 | res->video_out.dmaqueue_flags & ISP_VIDEO_DMAQUEUE_QUEUED) { | |
979 | resizer_enable_oneshot(res); | |
980 | isp_video_dmaqueue_flags_clr(&res->video_out); | |
981 | } | |
982 | } | |
983 | ||
984 | static void resizer_isr_buffer(struct isp_res_device *res) | |
985 | { | |
986 | struct isp_pipeline *pipe = to_isp_pipeline(&res->subdev.entity); | |
987 | struct isp_buffer *buffer; | |
988 | int restart = 0; | |
989 | ||
990 | if (res->state == ISP_PIPELINE_STREAM_STOPPED) | |
991 | return; | |
992 | ||
993 | /* Complete the output buffer and, if reading from memory, the input | |
994 | * buffer. | |
995 | */ | |
996 | buffer = omap3isp_video_buffer_next(&res->video_out, res->error); | |
997 | if (buffer != NULL) { | |
998 | resizer_set_outaddr(res, buffer->isp_addr); | |
999 | restart = 1; | |
1000 | } | |
1001 | ||
1002 | pipe->state |= ISP_PIPELINE_IDLE_OUTPUT; | |
1003 | ||
1004 | if (res->input == RESIZER_INPUT_MEMORY) { | |
1005 | buffer = omap3isp_video_buffer_next(&res->video_in, 0); | |
1006 | if (buffer != NULL) | |
1007 | resizer_set_inaddr(res, buffer->isp_addr); | |
1008 | pipe->state |= ISP_PIPELINE_IDLE_INPUT; | |
1009 | } | |
1010 | ||
1011 | if (res->state == ISP_PIPELINE_STREAM_SINGLESHOT) { | |
1012 | if (isp_pipeline_ready(pipe)) | |
1013 | omap3isp_pipeline_set_stream(pipe, | |
1014 | ISP_PIPELINE_STREAM_SINGLESHOT); | |
1015 | } else { | |
1016 | /* If an underrun occurs, the video queue operation handler will | |
1017 | * restart the resizer. Otherwise restart it immediately. | |
1018 | */ | |
1019 | if (restart) | |
1020 | resizer_enable_oneshot(res); | |
1021 | } | |
1022 | ||
1023 | res->error = 0; | |
1024 | } | |
1025 | ||
1026 | /* | |
1027 | * omap3isp_resizer_isr - ISP resizer interrupt handler | |
1028 | * | |
1029 | * Manage the resizer video buffers and configure shadowed and busy-locked | |
1030 | * registers. | |
1031 | */ | |
1032 | void omap3isp_resizer_isr(struct isp_res_device *res) | |
1033 | { | |
1034 | struct v4l2_mbus_framefmt *informat, *outformat; | |
1035 | ||
1036 | if (omap3isp_module_sync_is_stopping(&res->wait, &res->stopping)) | |
1037 | return; | |
1038 | ||
1039 | if (res->applycrop) { | |
1040 | outformat = __resizer_get_format(res, NULL, RESZ_PAD_SOURCE, | |
1041 | V4L2_SUBDEV_FORMAT_ACTIVE); | |
1042 | informat = __resizer_get_format(res, NULL, RESZ_PAD_SINK, | |
1043 | V4L2_SUBDEV_FORMAT_ACTIVE); | |
1044 | resizer_set_crop_params(res, informat, outformat); | |
1045 | res->applycrop = 0; | |
1046 | } | |
1047 | ||
1048 | resizer_isr_buffer(res); | |
1049 | } | |
1050 | ||
1051 | /* ----------------------------------------------------------------------------- | |
1052 | * ISP video operations | |
1053 | */ | |
1054 | ||
1055 | static int resizer_video_queue(struct isp_video *video, | |
1056 | struct isp_buffer *buffer) | |
1057 | { | |
1058 | struct isp_res_device *res = &video->isp->isp_res; | |
1059 | ||
1060 | if (video->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) | |
1061 | resizer_set_inaddr(res, buffer->isp_addr); | |
1062 | ||
1063 | /* | |
1064 | * We now have a buffer queued on the output. Despite what the | |
1065 | * TRM says, the resizer can't be restarted immediately. | |
1066 | * Enabling it in one shot mode in the middle of a frame (or at | |
1067 | * least asynchronously to the frame) results in the output | |
1068 | * being shifted randomly left/right and up/down, as if the | |
1069 | * hardware didn't synchronize itself to the beginning of the | |
1070 | * frame correctly. | |
1071 | * | |
1072 | * Restart the resizer on the next sync interrupt if running in | |
1073 | * continuous mode or when starting the stream. | |
1074 | */ | |
1075 | if (video->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) | |
1076 | resizer_set_outaddr(res, buffer->isp_addr); | |
1077 | ||
1078 | return 0; | |
1079 | } | |
1080 | ||
1081 | static const struct isp_video_operations resizer_video_ops = { | |
1082 | .queue = resizer_video_queue, | |
1083 | }; | |
1084 | ||
1085 | /* ----------------------------------------------------------------------------- | |
1086 | * V4L2 subdev operations | |
1087 | */ | |
1088 | ||
1089 | /* | |
1090 | * resizer_set_stream - Enable/Disable streaming on resizer subdev | |
1091 | * @sd: ISP resizer V4L2 subdev | |
1092 | * @enable: 1 == Enable, 0 == Disable | |
1093 | * | |
1094 | * The resizer hardware can't be enabled without a memory buffer to write to. | |
1095 | * As the s_stream operation is called in response to a STREAMON call without | |
1096 | * any buffer queued yet, just update the state field and return immediately. | |
1097 | * The resizer will be enabled in resizer_video_queue(). | |
1098 | */ | |
1099 | static int resizer_set_stream(struct v4l2_subdev *sd, int enable) | |
1100 | { | |
1101 | struct isp_res_device *res = v4l2_get_subdevdata(sd); | |
1102 | struct isp_video *video_out = &res->video_out; | |
1103 | struct isp_device *isp = to_isp_device(res); | |
1104 | struct device *dev = to_device(res); | |
1105 | ||
1106 | if (res->state == ISP_PIPELINE_STREAM_STOPPED) { | |
1107 | if (enable == ISP_PIPELINE_STREAM_STOPPED) | |
1108 | return 0; | |
1109 | ||
1110 | omap3isp_subclk_enable(isp, OMAP3_ISP_SUBCLK_RESIZER); | |
1111 | resizer_configure(res); | |
1112 | res->error = 0; | |
1113 | resizer_print_status(res); | |
1114 | } | |
1115 | ||
1116 | switch (enable) { | |
1117 | case ISP_PIPELINE_STREAM_CONTINUOUS: | |
1118 | omap3isp_sbl_enable(isp, OMAP3_ISP_SBL_RESIZER_WRITE); | |
1119 | if (video_out->dmaqueue_flags & ISP_VIDEO_DMAQUEUE_QUEUED) { | |
1120 | resizer_enable_oneshot(res); | |
1121 | isp_video_dmaqueue_flags_clr(video_out); | |
1122 | } | |
1123 | break; | |
1124 | ||
1125 | case ISP_PIPELINE_STREAM_SINGLESHOT: | |
1126 | if (res->input == RESIZER_INPUT_MEMORY) | |
1127 | omap3isp_sbl_enable(isp, OMAP3_ISP_SBL_RESIZER_READ); | |
1128 | omap3isp_sbl_enable(isp, OMAP3_ISP_SBL_RESIZER_WRITE); | |
1129 | ||
1130 | resizer_enable_oneshot(res); | |
1131 | break; | |
1132 | ||
1133 | case ISP_PIPELINE_STREAM_STOPPED: | |
1134 | if (omap3isp_module_sync_idle(&sd->entity, &res->wait, | |
1135 | &res->stopping)) | |
1136 | dev_dbg(dev, "%s: module stop timeout.\n", sd->name); | |
1137 | omap3isp_sbl_disable(isp, OMAP3_ISP_SBL_RESIZER_READ | | |
1138 | OMAP3_ISP_SBL_RESIZER_WRITE); | |
1139 | omap3isp_subclk_disable(isp, OMAP3_ISP_SUBCLK_RESIZER); | |
1140 | isp_video_dmaqueue_flags_clr(video_out); | |
1141 | break; | |
1142 | } | |
1143 | ||
1144 | res->state = enable; | |
1145 | return 0; | |
1146 | } | |
1147 | ||
1148 | /* | |
1149 | * resizer_g_crop - handle get crop subdev operation | |
1150 | * @sd : pointer to v4l2 subdev structure | |
1151 | * @pad : subdev pad | |
1152 | * @crop : pointer to crop structure | |
1153 | * @which : active or try format | |
1154 | * return zero | |
1155 | */ | |
1156 | static int resizer_g_crop(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh, | |
1157 | struct v4l2_subdev_crop *crop) | |
1158 | { | |
1159 | struct isp_res_device *res = v4l2_get_subdevdata(sd); | |
1160 | struct v4l2_mbus_framefmt *format; | |
1161 | struct resizer_ratio ratio; | |
1162 | ||
1163 | /* Only sink pad has crop capability */ | |
1164 | if (crop->pad != RESZ_PAD_SINK) | |
1165 | return -EINVAL; | |
1166 | ||
1167 | format = __resizer_get_format(res, fh, RESZ_PAD_SOURCE, crop->which); | |
1168 | crop->rect = *__resizer_get_crop(res, fh, crop->which); | |
1169 | resizer_calc_ratios(res, &crop->rect, format, &ratio); | |
1170 | ||
1171 | return 0; | |
1172 | } | |
1173 | ||
1174 | /* | |
1175 | * resizer_try_crop - mangles crop parameters. | |
1176 | */ | |
1177 | static void resizer_try_crop(const struct v4l2_mbus_framefmt *sink, | |
1178 | const struct v4l2_mbus_framefmt *source, | |
1179 | struct v4l2_rect *crop) | |
1180 | { | |
1181 | const unsigned int spv = DEFAULT_PHASE; | |
1182 | const unsigned int sph = DEFAULT_PHASE; | |
1183 | ||
1184 | /* Crop rectangle is constrained to the output size so that zoom ratio | |
1185 | * cannot exceed +/-4.0. | |
1186 | */ | |
1187 | unsigned int min_width = | |
1188 | ((32 * sph + (source->width - 1) * 64 + 16) >> 8) + 7; | |
1189 | unsigned int min_height = | |
1190 | ((32 * spv + (source->height - 1) * 64 + 16) >> 8) + 4; | |
1191 | unsigned int max_width = | |
1192 | ((64 * sph + (source->width - 1) * 1024 + 32) >> 8) + 7; | |
1193 | unsigned int max_height = | |
1194 | ((64 * spv + (source->height - 1) * 1024 + 32) >> 8) + 7; | |
1195 | ||
1196 | crop->width = clamp_t(u32, crop->width, min_width, max_width); | |
1197 | crop->height = clamp_t(u32, crop->height, min_height, max_height); | |
1198 | ||
1199 | /* Crop can not go beyond of the input rectangle */ | |
1200 | crop->left = clamp_t(u32, crop->left, 0, sink->width - MIN_IN_WIDTH); | |
1201 | crop->width = clamp_t(u32, crop->width, MIN_IN_WIDTH, | |
1202 | sink->width - crop->left); | |
1203 | crop->top = clamp_t(u32, crop->top, 0, sink->height - MIN_IN_HEIGHT); | |
1204 | crop->height = clamp_t(u32, crop->height, MIN_IN_HEIGHT, | |
1205 | sink->height - crop->top); | |
1206 | } | |
1207 | ||
1208 | /* | |
1209 | * resizer_s_crop - handle set crop subdev operation | |
1210 | * @sd : pointer to v4l2 subdev structure | |
1211 | * @pad : subdev pad | |
1212 | * @crop : pointer to crop structure | |
1213 | * @which : active or try format | |
1214 | * return -EINVAL or zero when succeed | |
1215 | */ | |
1216 | static int resizer_s_crop(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh, | |
1217 | struct v4l2_subdev_crop *crop) | |
1218 | { | |
1219 | struct isp_res_device *res = v4l2_get_subdevdata(sd); | |
1220 | struct isp_device *isp = to_isp_device(res); | |
1221 | struct v4l2_mbus_framefmt *format_sink, *format_source; | |
1222 | struct resizer_ratio ratio; | |
1223 | ||
1224 | /* Only sink pad has crop capability */ | |
1225 | if (crop->pad != RESZ_PAD_SINK) | |
1226 | return -EINVAL; | |
1227 | ||
1228 | format_sink = __resizer_get_format(res, fh, RESZ_PAD_SINK, | |
1229 | crop->which); | |
1230 | format_source = __resizer_get_format(res, fh, RESZ_PAD_SOURCE, | |
1231 | crop->which); | |
1232 | ||
1233 | dev_dbg(isp->dev, "%s: L=%d,T=%d,W=%d,H=%d,which=%d\n", __func__, | |
1234 | crop->rect.left, crop->rect.top, crop->rect.width, | |
1235 | crop->rect.height, crop->which); | |
1236 | ||
1237 | dev_dbg(isp->dev, "%s: input=%dx%d, output=%dx%d\n", __func__, | |
1238 | format_sink->width, format_sink->height, | |
1239 | format_source->width, format_source->height); | |
1240 | ||
1241 | resizer_try_crop(format_sink, format_source, &crop->rect); | |
1242 | *__resizer_get_crop(res, fh, crop->which) = crop->rect; | |
1243 | resizer_calc_ratios(res, &crop->rect, format_source, &ratio); | |
1244 | ||
1245 | if (crop->which == V4L2_SUBDEV_FORMAT_TRY) | |
1246 | return 0; | |
1247 | ||
1248 | res->ratio = ratio; | |
1249 | res->crop.active = crop->rect; | |
1250 | ||
1251 | /* | |
1252 | * s_crop can be called while streaming is on. In this case | |
1253 | * the crop values will be set in the next IRQ. | |
1254 | */ | |
1255 | if (res->state != ISP_PIPELINE_STREAM_STOPPED) | |
1256 | res->applycrop = 1; | |
1257 | ||
1258 | return 0; | |
1259 | } | |
1260 | ||
1261 | /* resizer pixel formats */ | |
1262 | static const unsigned int resizer_formats[] = { | |
1263 | V4L2_MBUS_FMT_UYVY8_1X16, | |
1264 | V4L2_MBUS_FMT_YUYV8_1X16, | |
1265 | }; | |
1266 | ||
1267 | static unsigned int resizer_max_in_width(struct isp_res_device *res) | |
1268 | { | |
1269 | struct isp_device *isp = to_isp_device(res); | |
1270 | ||
1271 | if (res->input == RESIZER_INPUT_MEMORY) { | |
1272 | return MAX_IN_WIDTH_MEMORY_MODE; | |
1273 | } else { | |
1274 | if (isp->revision == ISP_REVISION_1_0) | |
1275 | return MAX_IN_WIDTH_ONTHEFLY_MODE_ES1; | |
1276 | else | |
1277 | return MAX_IN_WIDTH_ONTHEFLY_MODE_ES2; | |
1278 | } | |
1279 | } | |
1280 | ||
1281 | /* | |
1282 | * resizer_try_format - Handle try format by pad subdev method | |
1283 | * @res : ISP resizer device | |
1284 | * @fh : V4L2 subdev file handle | |
1285 | * @pad : pad num | |
1286 | * @fmt : pointer to v4l2 format structure | |
1287 | * @which : wanted subdev format | |
1288 | */ | |
1289 | static void resizer_try_format(struct isp_res_device *res, | |
1290 | struct v4l2_subdev_fh *fh, unsigned int pad, | |
1291 | struct v4l2_mbus_framefmt *fmt, | |
1292 | enum v4l2_subdev_format_whence which) | |
1293 | { | |
1294 | struct v4l2_mbus_framefmt *format; | |
1295 | struct resizer_ratio ratio; | |
1296 | struct v4l2_rect crop; | |
1297 | ||
1298 | switch (pad) { | |
1299 | case RESZ_PAD_SINK: | |
1300 | if (fmt->code != V4L2_MBUS_FMT_YUYV8_1X16 && | |
1301 | fmt->code != V4L2_MBUS_FMT_UYVY8_1X16) | |
1302 | fmt->code = V4L2_MBUS_FMT_YUYV8_1X16; | |
1303 | ||
1304 | fmt->width = clamp_t(u32, fmt->width, MIN_IN_WIDTH, | |
1305 | resizer_max_in_width(res)); | |
1306 | fmt->height = clamp_t(u32, fmt->height, MIN_IN_HEIGHT, | |
1307 | MAX_IN_HEIGHT); | |
1308 | break; | |
1309 | ||
1310 | case RESZ_PAD_SOURCE: | |
1311 | format = __resizer_get_format(res, fh, RESZ_PAD_SINK, which); | |
1312 | fmt->code = format->code; | |
1313 | ||
1314 | crop = *__resizer_get_crop(res, fh, which); | |
1315 | resizer_calc_ratios(res, &crop, fmt, &ratio); | |
1316 | break; | |
1317 | } | |
1318 | ||
1319 | fmt->colorspace = V4L2_COLORSPACE_JPEG; | |
1320 | fmt->field = V4L2_FIELD_NONE; | |
1321 | } | |
1322 | ||
1323 | /* | |
1324 | * resizer_enum_mbus_code - Handle pixel format enumeration | |
1325 | * @sd : pointer to v4l2 subdev structure | |
1326 | * @fh : V4L2 subdev file handle | |
1327 | * @code : pointer to v4l2_subdev_mbus_code_enum structure | |
1328 | * return -EINVAL or zero on success | |
1329 | */ | |
1330 | static int resizer_enum_mbus_code(struct v4l2_subdev *sd, | |
1331 | struct v4l2_subdev_fh *fh, | |
1332 | struct v4l2_subdev_mbus_code_enum *code) | |
1333 | { | |
1334 | struct isp_res_device *res = v4l2_get_subdevdata(sd); | |
1335 | struct v4l2_mbus_framefmt *format; | |
1336 | ||
1337 | if (code->pad == RESZ_PAD_SINK) { | |
1338 | if (code->index >= ARRAY_SIZE(resizer_formats)) | |
1339 | return -EINVAL; | |
1340 | ||
1341 | code->code = resizer_formats[code->index]; | |
1342 | } else { | |
1343 | if (code->index != 0) | |
1344 | return -EINVAL; | |
1345 | ||
1346 | format = __resizer_get_format(res, fh, RESZ_PAD_SINK, | |
1347 | V4L2_SUBDEV_FORMAT_TRY); | |
1348 | code->code = format->code; | |
1349 | } | |
1350 | ||
1351 | return 0; | |
1352 | } | |
1353 | ||
1354 | static int resizer_enum_frame_size(struct v4l2_subdev *sd, | |
1355 | struct v4l2_subdev_fh *fh, | |
1356 | struct v4l2_subdev_frame_size_enum *fse) | |
1357 | { | |
1358 | struct isp_res_device *res = v4l2_get_subdevdata(sd); | |
1359 | struct v4l2_mbus_framefmt format; | |
1360 | ||
1361 | if (fse->index != 0) | |
1362 | return -EINVAL; | |
1363 | ||
1364 | format.code = fse->code; | |
1365 | format.width = 1; | |
1366 | format.height = 1; | |
1367 | resizer_try_format(res, fh, fse->pad, &format, V4L2_SUBDEV_FORMAT_TRY); | |
1368 | fse->min_width = format.width; | |
1369 | fse->min_height = format.height; | |
1370 | ||
1371 | if (format.code != fse->code) | |
1372 | return -EINVAL; | |
1373 | ||
1374 | format.code = fse->code; | |
1375 | format.width = -1; | |
1376 | format.height = -1; | |
1377 | resizer_try_format(res, fh, fse->pad, &format, V4L2_SUBDEV_FORMAT_TRY); | |
1378 | fse->max_width = format.width; | |
1379 | fse->max_height = format.height; | |
1380 | ||
1381 | return 0; | |
1382 | } | |
1383 | ||
1384 | /* | |
1385 | * resizer_get_format - Handle get format by pads subdev method | |
1386 | * @sd : pointer to v4l2 subdev structure | |
1387 | * @fh : V4L2 subdev file handle | |
1388 | * @fmt : pointer to v4l2 subdev format structure | |
25985edc | 1389 | * return -EINVAL or zero on success |
de1135d4 LP |
1390 | */ |
1391 | static int resizer_get_format(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh, | |
1392 | struct v4l2_subdev_format *fmt) | |
1393 | { | |
1394 | struct isp_res_device *res = v4l2_get_subdevdata(sd); | |
1395 | struct v4l2_mbus_framefmt *format; | |
1396 | ||
1397 | format = __resizer_get_format(res, fh, fmt->pad, fmt->which); | |
1398 | if (format == NULL) | |
1399 | return -EINVAL; | |
1400 | ||
1401 | fmt->format = *format; | |
1402 | return 0; | |
1403 | } | |
1404 | ||
1405 | /* | |
1406 | * resizer_set_format - Handle set format by pads subdev method | |
1407 | * @sd : pointer to v4l2 subdev structure | |
1408 | * @fh : V4L2 subdev file handle | |
1409 | * @fmt : pointer to v4l2 subdev format structure | |
1410 | * return -EINVAL or zero on success | |
1411 | */ | |
1412 | static int resizer_set_format(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh, | |
1413 | struct v4l2_subdev_format *fmt) | |
1414 | { | |
1415 | struct isp_res_device *res = v4l2_get_subdevdata(sd); | |
1416 | struct v4l2_mbus_framefmt *format; | |
1417 | struct v4l2_rect *crop; | |
1418 | ||
1419 | format = __resizer_get_format(res, fh, fmt->pad, fmt->which); | |
1420 | if (format == NULL) | |
1421 | return -EINVAL; | |
1422 | ||
1423 | resizer_try_format(res, fh, fmt->pad, &fmt->format, fmt->which); | |
1424 | *format = fmt->format; | |
1425 | ||
1426 | if (fmt->pad == RESZ_PAD_SINK) { | |
1427 | /* reset crop rectangle */ | |
1428 | crop = __resizer_get_crop(res, fh, fmt->which); | |
1429 | crop->left = 0; | |
1430 | crop->top = 0; | |
1431 | crop->width = fmt->format.width; | |
1432 | crop->height = fmt->format.height; | |
1433 | ||
1434 | /* Propagate the format from sink to source */ | |
1435 | format = __resizer_get_format(res, fh, RESZ_PAD_SOURCE, | |
1436 | fmt->which); | |
1437 | *format = fmt->format; | |
1438 | resizer_try_format(res, fh, RESZ_PAD_SOURCE, format, | |
1439 | fmt->which); | |
1440 | } | |
1441 | ||
1442 | if (fmt->which == V4L2_SUBDEV_FORMAT_ACTIVE) { | |
1443 | /* Compute and store the active crop rectangle and resizer | |
1444 | * ratios. format already points to the source pad active | |
1445 | * format. | |
1446 | */ | |
1447 | res->crop.active = res->crop.request; | |
1448 | resizer_calc_ratios(res, &res->crop.active, format, | |
1449 | &res->ratio); | |
1450 | } | |
1451 | ||
1452 | return 0; | |
1453 | } | |
1454 | ||
1455 | /* | |
1456 | * resizer_init_formats - Initialize formats on all pads | |
1457 | * @sd: ISP resizer V4L2 subdevice | |
1458 | * @fh: V4L2 subdev file handle | |
1459 | * | |
1460 | * Initialize all pad formats with default values. If fh is not NULL, try | |
1461 | * formats are initialized on the file handle. Otherwise active formats are | |
1462 | * initialized on the device. | |
1463 | */ | |
1464 | static int resizer_init_formats(struct v4l2_subdev *sd, | |
1465 | struct v4l2_subdev_fh *fh) | |
1466 | { | |
1467 | struct v4l2_subdev_format format; | |
1468 | ||
1469 | memset(&format, 0, sizeof(format)); | |
1470 | format.pad = RESZ_PAD_SINK; | |
1471 | format.which = fh ? V4L2_SUBDEV_FORMAT_TRY : V4L2_SUBDEV_FORMAT_ACTIVE; | |
1472 | format.format.code = V4L2_MBUS_FMT_YUYV8_1X16; | |
1473 | format.format.width = 4096; | |
1474 | format.format.height = 4096; | |
1475 | resizer_set_format(sd, fh, &format); | |
1476 | ||
1477 | return 0; | |
1478 | } | |
1479 | ||
1480 | /* subdev video operations */ | |
1481 | static const struct v4l2_subdev_video_ops resizer_v4l2_video_ops = { | |
1482 | .s_stream = resizer_set_stream, | |
1483 | }; | |
1484 | ||
1485 | /* subdev pad operations */ | |
1486 | static const struct v4l2_subdev_pad_ops resizer_v4l2_pad_ops = { | |
1487 | .enum_mbus_code = resizer_enum_mbus_code, | |
1488 | .enum_frame_size = resizer_enum_frame_size, | |
1489 | .get_fmt = resizer_get_format, | |
1490 | .set_fmt = resizer_set_format, | |
1491 | .get_crop = resizer_g_crop, | |
1492 | .set_crop = resizer_s_crop, | |
1493 | }; | |
1494 | ||
1495 | /* subdev operations */ | |
1496 | static const struct v4l2_subdev_ops resizer_v4l2_ops = { | |
1497 | .video = &resizer_v4l2_video_ops, | |
1498 | .pad = &resizer_v4l2_pad_ops, | |
1499 | }; | |
1500 | ||
1501 | /* subdev internal operations */ | |
1502 | static const struct v4l2_subdev_internal_ops resizer_v4l2_internal_ops = { | |
1503 | .open = resizer_init_formats, | |
1504 | }; | |
1505 | ||
1506 | /* ----------------------------------------------------------------------------- | |
1507 | * Media entity operations | |
1508 | */ | |
1509 | ||
1510 | /* | |
1511 | * resizer_link_setup - Setup resizer connections. | |
1512 | * @entity : Pointer to media entity structure | |
1513 | * @local : Pointer to local pad array | |
1514 | * @remote : Pointer to remote pad array | |
1515 | * @flags : Link flags | |
1516 | * return -EINVAL or zero on success | |
1517 | */ | |
1518 | static int resizer_link_setup(struct media_entity *entity, | |
1519 | const struct media_pad *local, | |
1520 | const struct media_pad *remote, u32 flags) | |
1521 | { | |
1522 | struct v4l2_subdev *sd = media_entity_to_v4l2_subdev(entity); | |
1523 | struct isp_res_device *res = v4l2_get_subdevdata(sd); | |
1524 | ||
1525 | switch (local->index | media_entity_type(remote->entity)) { | |
1526 | case RESZ_PAD_SINK | MEDIA_ENT_T_DEVNODE: | |
1527 | /* read from memory */ | |
1528 | if (flags & MEDIA_LNK_FL_ENABLED) { | |
1529 | if (res->input == RESIZER_INPUT_VP) | |
1530 | return -EBUSY; | |
1531 | res->input = RESIZER_INPUT_MEMORY; | |
1532 | } else { | |
1533 | if (res->input == RESIZER_INPUT_MEMORY) | |
1534 | res->input = RESIZER_INPUT_NONE; | |
1535 | } | |
1536 | break; | |
1537 | ||
1538 | case RESZ_PAD_SINK | MEDIA_ENT_T_V4L2_SUBDEV: | |
1539 | /* read from ccdc or previewer */ | |
1540 | if (flags & MEDIA_LNK_FL_ENABLED) { | |
1541 | if (res->input == RESIZER_INPUT_MEMORY) | |
1542 | return -EBUSY; | |
1543 | res->input = RESIZER_INPUT_VP; | |
1544 | } else { | |
1545 | if (res->input == RESIZER_INPUT_VP) | |
1546 | res->input = RESIZER_INPUT_NONE; | |
1547 | } | |
1548 | break; | |
1549 | ||
1550 | case RESZ_PAD_SOURCE | MEDIA_ENT_T_DEVNODE: | |
1551 | /* resizer always write to memory */ | |
1552 | break; | |
1553 | ||
1554 | default: | |
1555 | return -EINVAL; | |
1556 | } | |
1557 | ||
1558 | return 0; | |
1559 | } | |
1560 | ||
1561 | /* media operations */ | |
1562 | static const struct media_entity_operations resizer_media_ops = { | |
1563 | .link_setup = resizer_link_setup, | |
1564 | }; | |
1565 | ||
1566 | /* | |
1567 | * resizer_init_entities - Initialize resizer subdev and media entity. | |
1568 | * @res : Pointer to resizer device structure | |
1569 | * return -ENOMEM or zero on success | |
1570 | */ | |
1571 | static int resizer_init_entities(struct isp_res_device *res) | |
1572 | { | |
1573 | struct v4l2_subdev *sd = &res->subdev; | |
1574 | struct media_pad *pads = res->pads; | |
1575 | struct media_entity *me = &sd->entity; | |
1576 | int ret; | |
1577 | ||
1578 | res->input = RESIZER_INPUT_NONE; | |
1579 | ||
1580 | v4l2_subdev_init(sd, &resizer_v4l2_ops); | |
1581 | sd->internal_ops = &resizer_v4l2_internal_ops; | |
1582 | strlcpy(sd->name, "OMAP3 ISP resizer", sizeof(sd->name)); | |
1583 | sd->grp_id = 1 << 16; /* group ID for isp subdevs */ | |
1584 | v4l2_set_subdevdata(sd, res); | |
1585 | sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE; | |
1586 | ||
1587 | pads[RESZ_PAD_SINK].flags = MEDIA_PAD_FL_SINK; | |
1588 | pads[RESZ_PAD_SOURCE].flags = MEDIA_PAD_FL_SOURCE; | |
1589 | ||
1590 | me->ops = &resizer_media_ops; | |
1591 | ret = media_entity_init(me, RESZ_PADS_NUM, pads, 0); | |
1592 | if (ret < 0) | |
1593 | return ret; | |
1594 | ||
1595 | resizer_init_formats(sd, NULL); | |
1596 | ||
1597 | res->video_in.type = V4L2_BUF_TYPE_VIDEO_OUTPUT; | |
1598 | res->video_in.ops = &resizer_video_ops; | |
1599 | res->video_in.isp = to_isp_device(res); | |
1600 | res->video_in.capture_mem = PAGE_ALIGN(4096 * 4096) * 2 * 3; | |
1601 | res->video_in.bpl_alignment = 32; | |
1602 | res->video_out.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; | |
1603 | res->video_out.ops = &resizer_video_ops; | |
1604 | res->video_out.isp = to_isp_device(res); | |
1605 | res->video_out.capture_mem = PAGE_ALIGN(4096 * 4096) * 2 * 3; | |
1606 | res->video_out.bpl_alignment = 32; | |
1607 | ||
1608 | ret = omap3isp_video_init(&res->video_in, "resizer"); | |
1609 | if (ret < 0) | |
1610 | return ret; | |
1611 | ||
1612 | ret = omap3isp_video_init(&res->video_out, "resizer"); | |
1613 | if (ret < 0) | |
1614 | return ret; | |
1615 | ||
1616 | /* Connect the video nodes to the resizer subdev. */ | |
1617 | ret = media_entity_create_link(&res->video_in.video.entity, 0, | |
1618 | &res->subdev.entity, RESZ_PAD_SINK, 0); | |
1619 | if (ret < 0) | |
1620 | return ret; | |
1621 | ||
1622 | ret = media_entity_create_link(&res->subdev.entity, RESZ_PAD_SOURCE, | |
1623 | &res->video_out.video.entity, 0, 0); | |
1624 | if (ret < 0) | |
1625 | return ret; | |
1626 | ||
1627 | return 0; | |
1628 | } | |
1629 | ||
1630 | void omap3isp_resizer_unregister_entities(struct isp_res_device *res) | |
1631 | { | |
1632 | media_entity_cleanup(&res->subdev.entity); | |
1633 | ||
1634 | v4l2_device_unregister_subdev(&res->subdev); | |
1635 | omap3isp_video_unregister(&res->video_in); | |
1636 | omap3isp_video_unregister(&res->video_out); | |
1637 | } | |
1638 | ||
1639 | int omap3isp_resizer_register_entities(struct isp_res_device *res, | |
1640 | struct v4l2_device *vdev) | |
1641 | { | |
1642 | int ret; | |
1643 | ||
1644 | /* Register the subdev and video nodes. */ | |
1645 | ret = v4l2_device_register_subdev(vdev, &res->subdev); | |
1646 | if (ret < 0) | |
1647 | goto error; | |
1648 | ||
1649 | ret = omap3isp_video_register(&res->video_in, vdev); | |
1650 | if (ret < 0) | |
1651 | goto error; | |
1652 | ||
1653 | ret = omap3isp_video_register(&res->video_out, vdev); | |
1654 | if (ret < 0) | |
1655 | goto error; | |
1656 | ||
1657 | return 0; | |
1658 | ||
1659 | error: | |
1660 | omap3isp_resizer_unregister_entities(res); | |
1661 | return ret; | |
1662 | } | |
1663 | ||
1664 | /* ----------------------------------------------------------------------------- | |
1665 | * ISP resizer initialization and cleanup | |
1666 | */ | |
1667 | ||
1668 | void omap3isp_resizer_cleanup(struct isp_device *isp) | |
1669 | { | |
1670 | } | |
1671 | ||
1672 | /* | |
1673 | * isp_resizer_init - Resizer initialization. | |
1674 | * @isp : Pointer to ISP device | |
1675 | * return -ENOMEM or zero on success | |
1676 | */ | |
1677 | int omap3isp_resizer_init(struct isp_device *isp) | |
1678 | { | |
1679 | struct isp_res_device *res = &isp->isp_res; | |
1680 | int ret; | |
1681 | ||
1682 | init_waitqueue_head(&res->wait); | |
1683 | atomic_set(&res->stopping, 0); | |
1684 | ret = resizer_init_entities(res); | |
1685 | if (ret < 0) | |
1686 | goto out; | |
1687 | ||
1688 | out: | |
1689 | if (ret) | |
1690 | omap3isp_resizer_cleanup(isp); | |
1691 | ||
1692 | return ret; | |
1693 | } |