Commit | Line | Data |
---|---|---|
de1135d4 LP |
1 | /* |
2 | * ispccdc.c | |
3 | * | |
4 | * TI OMAP3 ISP - CCDC module | |
5 | * | |
6 | * Copyright (C) 2009-2010 Nokia Corporation | |
7 | * Copyright (C) 2009 Texas Instruments, Inc. | |
8 | * | |
9 | * Contacts: Laurent Pinchart <laurent.pinchart@ideasonboard.com> | |
10 | * Sakari Ailus <sakari.ailus@iki.fi> | |
11 | * | |
12 | * This program is free software; you can redistribute it and/or modify | |
13 | * it under the terms of the GNU General Public License version 2 as | |
14 | * published by the Free Software Foundation. | |
15 | * | |
16 | * This program is distributed in the hope that it will be useful, but | |
17 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
18 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
19 | * General Public License for more details. | |
20 | * | |
21 | * You should have received a copy of the GNU General Public License | |
22 | * along with this program; if not, write to the Free Software | |
23 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA | |
24 | * 02110-1301 USA | |
25 | */ | |
26 | ||
27 | #include <linux/module.h> | |
28 | #include <linux/uaccess.h> | |
29 | #include <linux/delay.h> | |
30 | #include <linux/device.h> | |
31 | #include <linux/dma-mapping.h> | |
32 | #include <linux/mm.h> | |
c8d35c84 | 33 | #include <linux/omap-iommu.h> |
de1135d4 | 34 | #include <linux/sched.h> |
e74d83aa | 35 | #include <linux/slab.h> |
de1135d4 LP |
36 | #include <media/v4l2-event.h> |
37 | ||
38 | #include "isp.h" | |
39 | #include "ispreg.h" | |
40 | #include "ispccdc.h" | |
41 | ||
a64909b8 LP |
42 | #define CCDC_MIN_WIDTH 32 |
43 | #define CCDC_MIN_HEIGHT 32 | |
44 | ||
de1135d4 LP |
45 | static struct v4l2_mbus_framefmt * |
46 | __ccdc_get_format(struct isp_ccdc_device *ccdc, struct v4l2_subdev_fh *fh, | |
47 | unsigned int pad, enum v4l2_subdev_format_whence which); | |
48 | ||
49 | static const unsigned int ccdc_fmts[] = { | |
50 | V4L2_MBUS_FMT_Y8_1X8, | |
5782f97b MJ |
51 | V4L2_MBUS_FMT_Y10_1X10, |
52 | V4L2_MBUS_FMT_Y12_1X12, | |
53 | V4L2_MBUS_FMT_SGRBG8_1X8, | |
54 | V4L2_MBUS_FMT_SRGGB8_1X8, | |
55 | V4L2_MBUS_FMT_SBGGR8_1X8, | |
56 | V4L2_MBUS_FMT_SGBRG8_1X8, | |
de1135d4 LP |
57 | V4L2_MBUS_FMT_SGRBG10_1X10, |
58 | V4L2_MBUS_FMT_SRGGB10_1X10, | |
59 | V4L2_MBUS_FMT_SBGGR10_1X10, | |
60 | V4L2_MBUS_FMT_SGBRG10_1X10, | |
61 | V4L2_MBUS_FMT_SGRBG12_1X12, | |
62 | V4L2_MBUS_FMT_SRGGB12_1X12, | |
63 | V4L2_MBUS_FMT_SBGGR12_1X12, | |
64 | V4L2_MBUS_FMT_SGBRG12_1X12, | |
c51364ca LP |
65 | V4L2_MBUS_FMT_YUYV8_2X8, |
66 | V4L2_MBUS_FMT_UYVY8_2X8, | |
de1135d4 LP |
67 | }; |
68 | ||
69 | /* | |
70 | * ccdc_print_status - Print current CCDC Module register values. | |
71 | * @ccdc: Pointer to ISP CCDC device. | |
72 | * | |
73 | * Also prints other debug information stored in the CCDC module. | |
74 | */ | |
75 | #define CCDC_PRINT_REGISTER(isp, name)\ | |
76 | dev_dbg(isp->dev, "###CCDC " #name "=0x%08x\n", \ | |
77 | isp_reg_readl(isp, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_##name)) | |
78 | ||
79 | static void ccdc_print_status(struct isp_ccdc_device *ccdc) | |
80 | { | |
81 | struct isp_device *isp = to_isp_device(ccdc); | |
82 | ||
83 | dev_dbg(isp->dev, "-------------CCDC Register dump-------------\n"); | |
84 | ||
85 | CCDC_PRINT_REGISTER(isp, PCR); | |
86 | CCDC_PRINT_REGISTER(isp, SYN_MODE); | |
87 | CCDC_PRINT_REGISTER(isp, HD_VD_WID); | |
88 | CCDC_PRINT_REGISTER(isp, PIX_LINES); | |
89 | CCDC_PRINT_REGISTER(isp, HORZ_INFO); | |
90 | CCDC_PRINT_REGISTER(isp, VERT_START); | |
91 | CCDC_PRINT_REGISTER(isp, VERT_LINES); | |
92 | CCDC_PRINT_REGISTER(isp, CULLING); | |
93 | CCDC_PRINT_REGISTER(isp, HSIZE_OFF); | |
94 | CCDC_PRINT_REGISTER(isp, SDOFST); | |
95 | CCDC_PRINT_REGISTER(isp, SDR_ADDR); | |
96 | CCDC_PRINT_REGISTER(isp, CLAMP); | |
97 | CCDC_PRINT_REGISTER(isp, DCSUB); | |
98 | CCDC_PRINT_REGISTER(isp, COLPTN); | |
99 | CCDC_PRINT_REGISTER(isp, BLKCMP); | |
100 | CCDC_PRINT_REGISTER(isp, FPC); | |
101 | CCDC_PRINT_REGISTER(isp, FPC_ADDR); | |
102 | CCDC_PRINT_REGISTER(isp, VDINT); | |
103 | CCDC_PRINT_REGISTER(isp, ALAW); | |
104 | CCDC_PRINT_REGISTER(isp, REC656IF); | |
105 | CCDC_PRINT_REGISTER(isp, CFG); | |
106 | CCDC_PRINT_REGISTER(isp, FMTCFG); | |
107 | CCDC_PRINT_REGISTER(isp, FMT_HORZ); | |
108 | CCDC_PRINT_REGISTER(isp, FMT_VERT); | |
109 | CCDC_PRINT_REGISTER(isp, PRGEVEN0); | |
110 | CCDC_PRINT_REGISTER(isp, PRGEVEN1); | |
111 | CCDC_PRINT_REGISTER(isp, PRGODD0); | |
112 | CCDC_PRINT_REGISTER(isp, PRGODD1); | |
113 | CCDC_PRINT_REGISTER(isp, VP_OUT); | |
114 | CCDC_PRINT_REGISTER(isp, LSC_CONFIG); | |
115 | CCDC_PRINT_REGISTER(isp, LSC_INITIAL); | |
116 | CCDC_PRINT_REGISTER(isp, LSC_TABLE_BASE); | |
117 | CCDC_PRINT_REGISTER(isp, LSC_TABLE_OFFSET); | |
118 | ||
119 | dev_dbg(isp->dev, "--------------------------------------------\n"); | |
120 | } | |
121 | ||
122 | /* | |
123 | * omap3isp_ccdc_busy - Get busy state of the CCDC. | |
124 | * @ccdc: Pointer to ISP CCDC device. | |
125 | */ | |
126 | int omap3isp_ccdc_busy(struct isp_ccdc_device *ccdc) | |
127 | { | |
128 | struct isp_device *isp = to_isp_device(ccdc); | |
129 | ||
130 | return isp_reg_readl(isp, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_PCR) & | |
131 | ISPCCDC_PCR_BUSY; | |
132 | } | |
133 | ||
134 | /* ----------------------------------------------------------------------------- | |
135 | * Lens Shading Compensation | |
136 | */ | |
137 | ||
138 | /* | |
139 | * ccdc_lsc_validate_config - Check that LSC configuration is valid. | |
140 | * @ccdc: Pointer to ISP CCDC device. | |
141 | * @lsc_cfg: the LSC configuration to check. | |
142 | * | |
143 | * Returns 0 if the LSC configuration is valid, or -EINVAL if invalid. | |
144 | */ | |
145 | static int ccdc_lsc_validate_config(struct isp_ccdc_device *ccdc, | |
146 | struct omap3isp_ccdc_lsc_config *lsc_cfg) | |
147 | { | |
148 | struct isp_device *isp = to_isp_device(ccdc); | |
149 | struct v4l2_mbus_framefmt *format; | |
150 | unsigned int paxel_width, paxel_height; | |
151 | unsigned int paxel_shift_x, paxel_shift_y; | |
152 | unsigned int min_width, min_height, min_size; | |
153 | unsigned int input_width, input_height; | |
154 | ||
155 | paxel_shift_x = lsc_cfg->gain_mode_m; | |
156 | paxel_shift_y = lsc_cfg->gain_mode_n; | |
157 | ||
158 | if ((paxel_shift_x < 2) || (paxel_shift_x > 6) || | |
159 | (paxel_shift_y < 2) || (paxel_shift_y > 6)) { | |
160 | dev_dbg(isp->dev, "CCDC: LSC: Invalid paxel size\n"); | |
161 | return -EINVAL; | |
162 | } | |
163 | ||
164 | if (lsc_cfg->offset & 3) { | |
165 | dev_dbg(isp->dev, "CCDC: LSC: Offset must be a multiple of " | |
166 | "4\n"); | |
167 | return -EINVAL; | |
168 | } | |
169 | ||
170 | if ((lsc_cfg->initial_x & 1) || (lsc_cfg->initial_y & 1)) { | |
171 | dev_dbg(isp->dev, "CCDC: LSC: initial_x and y must be even\n"); | |
172 | return -EINVAL; | |
173 | } | |
174 | ||
175 | format = __ccdc_get_format(ccdc, NULL, CCDC_PAD_SINK, | |
176 | V4L2_SUBDEV_FORMAT_ACTIVE); | |
177 | input_width = format->width; | |
178 | input_height = format->height; | |
179 | ||
180 | /* Calculate minimum bytesize for validation */ | |
181 | paxel_width = 1 << paxel_shift_x; | |
182 | min_width = ((input_width + lsc_cfg->initial_x + paxel_width - 1) | |
183 | >> paxel_shift_x) + 1; | |
184 | ||
185 | paxel_height = 1 << paxel_shift_y; | |
186 | min_height = ((input_height + lsc_cfg->initial_y + paxel_height - 1) | |
187 | >> paxel_shift_y) + 1; | |
188 | ||
189 | min_size = 4 * min_width * min_height; | |
190 | if (min_size > lsc_cfg->size) { | |
191 | dev_dbg(isp->dev, "CCDC: LSC: too small table\n"); | |
192 | return -EINVAL; | |
193 | } | |
194 | if (lsc_cfg->offset < (min_width * 4)) { | |
195 | dev_dbg(isp->dev, "CCDC: LSC: Offset is too small\n"); | |
196 | return -EINVAL; | |
197 | } | |
198 | if ((lsc_cfg->size / lsc_cfg->offset) < min_height) { | |
199 | dev_dbg(isp->dev, "CCDC: LSC: Wrong size/offset combination\n"); | |
200 | return -EINVAL; | |
201 | } | |
202 | return 0; | |
203 | } | |
204 | ||
205 | /* | |
206 | * ccdc_lsc_program_table - Program Lens Shading Compensation table address. | |
207 | * @ccdc: Pointer to ISP CCDC device. | |
208 | */ | |
209 | static void ccdc_lsc_program_table(struct isp_ccdc_device *ccdc, u32 addr) | |
210 | { | |
211 | isp_reg_writel(to_isp_device(ccdc), addr, | |
212 | OMAP3_ISP_IOMEM_CCDC, ISPCCDC_LSC_TABLE_BASE); | |
213 | } | |
214 | ||
215 | /* | |
216 | * ccdc_lsc_setup_regs - Configures the lens shading compensation module | |
217 | * @ccdc: Pointer to ISP CCDC device. | |
218 | */ | |
219 | static void ccdc_lsc_setup_regs(struct isp_ccdc_device *ccdc, | |
220 | struct omap3isp_ccdc_lsc_config *cfg) | |
221 | { | |
222 | struct isp_device *isp = to_isp_device(ccdc); | |
223 | int reg; | |
224 | ||
225 | isp_reg_writel(isp, cfg->offset, OMAP3_ISP_IOMEM_CCDC, | |
226 | ISPCCDC_LSC_TABLE_OFFSET); | |
227 | ||
228 | reg = 0; | |
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); | |
233 | ||
234 | reg = 0; | |
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); | |
241 | } | |
242 | ||
243 | static int ccdc_lsc_wait_prefetch(struct isp_ccdc_device *ccdc) | |
244 | { | |
245 | struct isp_device *isp = to_isp_device(ccdc); | |
246 | unsigned int wait; | |
247 | ||
248 | isp_reg_writel(isp, IRQ0STATUS_CCDC_LSC_PREF_COMP_IRQ, | |
249 | OMAP3_ISP_IOMEM_MAIN, ISP_IRQ0STATUS); | |
250 | ||
251 | /* timeout 1 ms */ | |
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); | |
257 | return 0; | |
258 | } | |
259 | ||
260 | rmb(); | |
261 | udelay(1); | |
262 | } | |
263 | ||
264 | return -ETIMEDOUT; | |
265 | } | |
266 | ||
267 | /* | |
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. | |
271 | */ | |
272 | static int __ccdc_lsc_enable(struct isp_ccdc_device *ccdc, int enable) | |
273 | { | |
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); | |
278 | ||
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)) | |
283 | return -EINVAL; | |
284 | ||
285 | if (enable) | |
286 | omap3isp_sbl_enable(isp, OMAP3_ISP_SBL_CCDC_LSC_READ); | |
287 | ||
288 | isp_reg_clr_set(isp, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_LSC_CONFIG, | |
289 | ISPCCDC_LSC_ENABLE, enable ? ISPCCDC_LSC_ENABLE : 0); | |
290 | ||
291 | if (enable) { | |
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 prefecth timeout\n"); | |
297 | return -ETIMEDOUT; | |
298 | } | |
299 | ccdc->lsc.state = LSC_STATE_RUNNING; | |
300 | } else { | |
301 | ccdc->lsc.state = LSC_STATE_STOPPING; | |
302 | } | |
303 | ||
304 | return 0; | |
305 | } | |
306 | ||
307 | static int ccdc_lsc_busy(struct isp_ccdc_device *ccdc) | |
308 | { | |
309 | struct isp_device *isp = to_isp_device(ccdc); | |
310 | ||
311 | return isp_reg_readl(isp, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_LSC_CONFIG) & | |
312 | ISPCCDC_LSC_BUSY; | |
313 | } | |
314 | ||
315 | /* __ccdc_lsc_configure - Apply a new configuration to the LSC engine | |
316 | * @ccdc: Pointer to ISP CCDC device | |
317 | * @req: New configuration request | |
318 | * | |
319 | * context: in_interrupt() | |
320 | */ | |
321 | static int __ccdc_lsc_configure(struct isp_ccdc_device *ccdc, | |
322 | struct ispccdc_lsc_config_req *req) | |
323 | { | |
324 | if (!req->enable) | |
325 | return -EINVAL; | |
326 | ||
327 | if (ccdc_lsc_validate_config(ccdc, &req->config) < 0) { | |
328 | dev_dbg(to_device(ccdc), "Discard LSC configuration\n"); | |
329 | return -EINVAL; | |
330 | } | |
331 | ||
332 | if (ccdc_lsc_busy(ccdc)) | |
333 | return -EBUSY; | |
334 | ||
335 | ccdc_lsc_setup_regs(ccdc, &req->config); | |
336 | ccdc_lsc_program_table(ccdc, req->table); | |
337 | return 0; | |
338 | } | |
339 | ||
340 | /* | |
341 | * ccdc_lsc_error_handler - Handle LSC prefetch error scenario. | |
342 | * @ccdc: Pointer to ISP CCDC device. | |
343 | * | |
344 | * Disables LSC, and defers enablement to shadow registers update time. | |
345 | */ | |
346 | static void ccdc_lsc_error_handler(struct isp_ccdc_device *ccdc) | |
347 | { | |
348 | struct isp_device *isp = to_isp_device(ccdc); | |
349 | /* | |
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 | |
353 | * after: | |
354 | * 1) Clearing this event | |
355 | * 2) Disabling the LSC module | |
356 | * 3) Enabling it | |
357 | */ | |
358 | isp_reg_clr(isp, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_LSC_CONFIG, | |
359 | ISPCCDC_LSC_ENABLE); | |
360 | ccdc->lsc.state = LSC_STATE_STOPPED; | |
361 | } | |
362 | ||
363 | static void ccdc_lsc_free_request(struct isp_ccdc_device *ccdc, | |
364 | struct ispccdc_lsc_config_req *req) | |
365 | { | |
366 | struct isp_device *isp = to_isp_device(ccdc); | |
367 | ||
368 | if (req == NULL) | |
369 | return; | |
370 | ||
371 | if (req->iovm) | |
372 | dma_unmap_sg(isp->dev, req->iovm->sgt->sgl, | |
373 | req->iovm->sgt->nents, DMA_TO_DEVICE); | |
374 | if (req->table) | |
fabdbca8 | 375 | omap_iommu_vfree(isp->domain, isp->dev, req->table); |
de1135d4 LP |
376 | kfree(req); |
377 | } | |
378 | ||
379 | static void ccdc_lsc_free_queue(struct isp_ccdc_device *ccdc, | |
380 | struct list_head *queue) | |
381 | { | |
382 | struct ispccdc_lsc_config_req *req, *n; | |
383 | unsigned long flags; | |
384 | ||
385 | spin_lock_irqsave(&ccdc->lsc.req_lock, flags); | |
386 | list_for_each_entry_safe(req, n, queue, list) { | |
387 | list_del(&req->list); | |
388 | spin_unlock_irqrestore(&ccdc->lsc.req_lock, flags); | |
389 | ccdc_lsc_free_request(ccdc, req); | |
390 | spin_lock_irqsave(&ccdc->lsc.req_lock, flags); | |
391 | } | |
392 | spin_unlock_irqrestore(&ccdc->lsc.req_lock, flags); | |
393 | } | |
394 | ||
395 | static void ccdc_lsc_free_table_work(struct work_struct *work) | |
396 | { | |
397 | struct isp_ccdc_device *ccdc; | |
398 | struct ispccdc_lsc *lsc; | |
399 | ||
400 | lsc = container_of(work, struct ispccdc_lsc, table_work); | |
401 | ccdc = container_of(lsc, struct isp_ccdc_device, lsc); | |
402 | ||
403 | ccdc_lsc_free_queue(ccdc, &lsc->free_queue); | |
404 | } | |
405 | ||
406 | /* | |
407 | * ccdc_lsc_config - Configure the LSC module from a userspace request | |
408 | * | |
409 | * Store the request LSC configuration in the LSC engine request pointer. The | |
410 | * configuration will be applied to the hardware when the CCDC will be enabled, | |
411 | * or at the next LSC interrupt if the CCDC is already running. | |
412 | */ | |
413 | static int ccdc_lsc_config(struct isp_ccdc_device *ccdc, | |
414 | struct omap3isp_ccdc_update_config *config) | |
415 | { | |
416 | struct isp_device *isp = to_isp_device(ccdc); | |
417 | struct ispccdc_lsc_config_req *req; | |
418 | unsigned long flags; | |
419 | void *table; | |
420 | u16 update; | |
421 | int ret; | |
422 | ||
423 | update = config->update & | |
424 | (OMAP3ISP_CCDC_CONFIG_LSC | OMAP3ISP_CCDC_TBL_LSC); | |
425 | if (!update) | |
426 | return 0; | |
427 | ||
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__); | |
431 | return -EINVAL; | |
432 | } | |
433 | ||
434 | req = kzalloc(sizeof(*req), GFP_KERNEL); | |
435 | if (req == NULL) | |
436 | return -ENOMEM; | |
437 | ||
438 | if (config->flag & OMAP3ISP_CCDC_CONFIG_LSC) { | |
439 | if (copy_from_user(&req->config, config->lsc_cfg, | |
440 | sizeof(req->config))) { | |
441 | ret = -EFAULT; | |
442 | goto done; | |
443 | } | |
444 | ||
445 | req->enable = 1; | |
446 | ||
fabdbca8 | 447 | req->table = omap_iommu_vmalloc(isp->domain, isp->dev, 0, |
f626b52d | 448 | req->config.size, IOMMU_FLAG); |
de1135d4 LP |
449 | if (IS_ERR_VALUE(req->table)) { |
450 | req->table = 0; | |
451 | ret = -ENOMEM; | |
452 | goto done; | |
453 | } | |
454 | ||
fabdbca8 | 455 | req->iovm = omap_find_iovm_area(isp->dev, req->table); |
de1135d4 LP |
456 | if (req->iovm == NULL) { |
457 | ret = -ENOMEM; | |
458 | goto done; | |
459 | } | |
460 | ||
461 | if (!dma_map_sg(isp->dev, req->iovm->sgt->sgl, | |
462 | req->iovm->sgt->nents, DMA_TO_DEVICE)) { | |
463 | ret = -ENOMEM; | |
464 | req->iovm = NULL; | |
465 | goto done; | |
466 | } | |
467 | ||
468 | dma_sync_sg_for_cpu(isp->dev, req->iovm->sgt->sgl, | |
469 | req->iovm->sgt->nents, DMA_TO_DEVICE); | |
470 | ||
fabdbca8 | 471 | table = omap_da_to_va(isp->dev, req->table); |
de1135d4 LP |
472 | if (copy_from_user(table, config->lsc, req->config.size)) { |
473 | ret = -EFAULT; | |
474 | goto done; | |
475 | } | |
476 | ||
477 | dma_sync_sg_for_device(isp->dev, req->iovm->sgt->sgl, | |
478 | req->iovm->sgt->nents, DMA_TO_DEVICE); | |
479 | } | |
480 | ||
481 | spin_lock_irqsave(&ccdc->lsc.req_lock, flags); | |
482 | if (ccdc->lsc.request) { | |
483 | list_add_tail(&ccdc->lsc.request->list, &ccdc->lsc.free_queue); | |
484 | schedule_work(&ccdc->lsc.table_work); | |
485 | } | |
486 | ccdc->lsc.request = req; | |
487 | spin_unlock_irqrestore(&ccdc->lsc.req_lock, flags); | |
488 | ||
489 | ret = 0; | |
490 | ||
491 | done: | |
492 | if (ret < 0) | |
493 | ccdc_lsc_free_request(ccdc, req); | |
494 | ||
495 | return ret; | |
496 | } | |
497 | ||
498 | static inline int ccdc_lsc_is_configured(struct isp_ccdc_device *ccdc) | |
499 | { | |
500 | unsigned long flags; | |
501 | ||
502 | spin_lock_irqsave(&ccdc->lsc.req_lock, flags); | |
503 | if (ccdc->lsc.active) { | |
504 | spin_unlock_irqrestore(&ccdc->lsc.req_lock, flags); | |
505 | return 1; | |
506 | } | |
507 | spin_unlock_irqrestore(&ccdc->lsc.req_lock, flags); | |
508 | return 0; | |
509 | } | |
510 | ||
511 | static int ccdc_lsc_enable(struct isp_ccdc_device *ccdc) | |
512 | { | |
513 | struct ispccdc_lsc *lsc = &ccdc->lsc; | |
514 | ||
515 | if (lsc->state != LSC_STATE_STOPPED) | |
516 | return -EINVAL; | |
517 | ||
518 | if (lsc->active) { | |
519 | list_add_tail(&lsc->active->list, &lsc->free_queue); | |
520 | lsc->active = NULL; | |
521 | } | |
522 | ||
523 | if (__ccdc_lsc_configure(ccdc, lsc->request) < 0) { | |
524 | omap3isp_sbl_disable(to_isp_device(ccdc), | |
525 | OMAP3_ISP_SBL_CCDC_LSC_READ); | |
526 | list_add_tail(&lsc->request->list, &lsc->free_queue); | |
527 | lsc->request = NULL; | |
528 | goto done; | |
529 | } | |
530 | ||
531 | lsc->active = lsc->request; | |
532 | lsc->request = NULL; | |
533 | __ccdc_lsc_enable(ccdc, 1); | |
534 | ||
535 | done: | |
536 | if (!list_empty(&lsc->free_queue)) | |
537 | schedule_work(&lsc->table_work); | |
538 | ||
539 | return 0; | |
540 | } | |
541 | ||
542 | /* ----------------------------------------------------------------------------- | |
543 | * Parameters configuration | |
544 | */ | |
545 | ||
546 | /* | |
547 | * ccdc_configure_clamp - Configure optical-black or digital clamping | |
548 | * @ccdc: Pointer to ISP CCDC device. | |
549 | * | |
550 | * The CCDC performs either optical-black or digital clamp. Configure and enable | |
551 | * the selected clamp method. | |
552 | */ | |
553 | static void ccdc_configure_clamp(struct isp_ccdc_device *ccdc) | |
554 | { | |
555 | struct isp_device *isp = to_isp_device(ccdc); | |
556 | u32 clamp; | |
557 | ||
558 | if (ccdc->obclamp) { | |
559 | clamp = ccdc->clamp.obgain << ISPCCDC_CLAMP_OBGAIN_SHIFT; | |
560 | clamp |= ccdc->clamp.oblen << ISPCCDC_CLAMP_OBSLEN_SHIFT; | |
561 | clamp |= ccdc->clamp.oblines << ISPCCDC_CLAMP_OBSLN_SHIFT; | |
562 | clamp |= ccdc->clamp.obstpixel << ISPCCDC_CLAMP_OBST_SHIFT; | |
563 | isp_reg_writel(isp, clamp, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_CLAMP); | |
564 | } else { | |
565 | isp_reg_writel(isp, ccdc->clamp.dcsubval, | |
566 | OMAP3_ISP_IOMEM_CCDC, ISPCCDC_DCSUB); | |
567 | } | |
568 | ||
569 | isp_reg_clr_set(isp, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_CLAMP, | |
570 | ISPCCDC_CLAMP_CLAMPEN, | |
571 | ccdc->obclamp ? ISPCCDC_CLAMP_CLAMPEN : 0); | |
572 | } | |
573 | ||
574 | /* | |
575 | * ccdc_configure_fpc - Configure Faulty Pixel Correction | |
576 | * @ccdc: Pointer to ISP CCDC device. | |
577 | */ | |
578 | static void ccdc_configure_fpc(struct isp_ccdc_device *ccdc) | |
579 | { | |
580 | struct isp_device *isp = to_isp_device(ccdc); | |
581 | ||
582 | isp_reg_clr(isp, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_FPC, ISPCCDC_FPC_FPCEN); | |
583 | ||
584 | if (!ccdc->fpc_en) | |
585 | return; | |
586 | ||
587 | isp_reg_writel(isp, ccdc->fpc.fpcaddr, OMAP3_ISP_IOMEM_CCDC, | |
588 | ISPCCDC_FPC_ADDR); | |
589 | /* The FPNUM field must be set before enabling FPC. */ | |
590 | isp_reg_writel(isp, (ccdc->fpc.fpnum << ISPCCDC_FPC_FPNUM_SHIFT), | |
591 | OMAP3_ISP_IOMEM_CCDC, ISPCCDC_FPC); | |
592 | isp_reg_writel(isp, (ccdc->fpc.fpnum << ISPCCDC_FPC_FPNUM_SHIFT) | | |
593 | ISPCCDC_FPC_FPCEN, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_FPC); | |
594 | } | |
595 | ||
596 | /* | |
597 | * ccdc_configure_black_comp - Configure Black Level Compensation. | |
598 | * @ccdc: Pointer to ISP CCDC device. | |
599 | */ | |
600 | static void ccdc_configure_black_comp(struct isp_ccdc_device *ccdc) | |
601 | { | |
602 | struct isp_device *isp = to_isp_device(ccdc); | |
603 | u32 blcomp; | |
604 | ||
605 | blcomp = ccdc->blcomp.b_mg << ISPCCDC_BLKCMP_B_MG_SHIFT; | |
606 | blcomp |= ccdc->blcomp.gb_g << ISPCCDC_BLKCMP_GB_G_SHIFT; | |
607 | blcomp |= ccdc->blcomp.gr_cy << ISPCCDC_BLKCMP_GR_CY_SHIFT; | |
608 | blcomp |= ccdc->blcomp.r_ye << ISPCCDC_BLKCMP_R_YE_SHIFT; | |
609 | ||
610 | isp_reg_writel(isp, blcomp, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_BLKCMP); | |
611 | } | |
612 | ||
613 | /* | |
614 | * ccdc_configure_lpf - Configure Low-Pass Filter (LPF). | |
615 | * @ccdc: Pointer to ISP CCDC device. | |
616 | */ | |
617 | static void ccdc_configure_lpf(struct isp_ccdc_device *ccdc) | |
618 | { | |
619 | struct isp_device *isp = to_isp_device(ccdc); | |
620 | ||
621 | isp_reg_clr_set(isp, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_SYN_MODE, | |
622 | ISPCCDC_SYN_MODE_LPF, | |
623 | ccdc->lpf ? ISPCCDC_SYN_MODE_LPF : 0); | |
624 | } | |
625 | ||
626 | /* | |
627 | * ccdc_configure_alaw - Configure A-law compression. | |
628 | * @ccdc: Pointer to ISP CCDC device. | |
629 | */ | |
630 | static void ccdc_configure_alaw(struct isp_ccdc_device *ccdc) | |
631 | { | |
632 | struct isp_device *isp = to_isp_device(ccdc); | |
73ea57eb | 633 | const struct isp_format_info *info; |
de1135d4 LP |
634 | u32 alaw = 0; |
635 | ||
73ea57eb LP |
636 | info = omap3isp_video_format_info(ccdc->formats[CCDC_PAD_SINK].code); |
637 | ||
638 | switch (info->width) { | |
de1135d4 LP |
639 | case 8: |
640 | return; | |
641 | ||
642 | case 10: | |
643 | alaw = ISPCCDC_ALAW_GWDI_9_0; | |
644 | break; | |
645 | case 11: | |
646 | alaw = ISPCCDC_ALAW_GWDI_10_1; | |
647 | break; | |
648 | case 12: | |
649 | alaw = ISPCCDC_ALAW_GWDI_11_2; | |
650 | break; | |
651 | case 13: | |
652 | alaw = ISPCCDC_ALAW_GWDI_12_3; | |
653 | break; | |
654 | } | |
655 | ||
656 | if (ccdc->alaw) | |
657 | alaw |= ISPCCDC_ALAW_CCDTBL; | |
658 | ||
659 | isp_reg_writel(isp, alaw, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_ALAW); | |
660 | } | |
661 | ||
662 | /* | |
663 | * ccdc_config_imgattr - Configure sensor image specific attributes. | |
664 | * @ccdc: Pointer to ISP CCDC device. | |
665 | * @colptn: Color pattern of the sensor. | |
666 | */ | |
667 | static void ccdc_config_imgattr(struct isp_ccdc_device *ccdc, u32 colptn) | |
668 | { | |
669 | struct isp_device *isp = to_isp_device(ccdc); | |
670 | ||
671 | isp_reg_writel(isp, colptn, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_COLPTN); | |
672 | } | |
673 | ||
674 | /* | |
675 | * ccdc_config - Set CCDC configuration from userspace | |
676 | * @ccdc: Pointer to ISP CCDC device. | |
677 | * @userspace_add: Structure containing CCDC configuration sent from userspace. | |
678 | * | |
679 | * Returns 0 if successful, -EINVAL if the pointer to the configuration | |
680 | * structure is null, or the copy_from_user function fails to copy user space | |
681 | * memory to kernel space memory. | |
682 | */ | |
683 | static int ccdc_config(struct isp_ccdc_device *ccdc, | |
684 | struct omap3isp_ccdc_update_config *ccdc_struct) | |
685 | { | |
686 | struct isp_device *isp = to_isp_device(ccdc); | |
687 | unsigned long flags; | |
688 | ||
689 | spin_lock_irqsave(&ccdc->lock, flags); | |
690 | ccdc->shadow_update = 1; | |
691 | spin_unlock_irqrestore(&ccdc->lock, flags); | |
692 | ||
693 | if (OMAP3ISP_CCDC_ALAW & ccdc_struct->update) { | |
694 | ccdc->alaw = !!(OMAP3ISP_CCDC_ALAW & ccdc_struct->flag); | |
695 | ccdc->update |= OMAP3ISP_CCDC_ALAW; | |
696 | } | |
697 | ||
698 | if (OMAP3ISP_CCDC_LPF & ccdc_struct->update) { | |
699 | ccdc->lpf = !!(OMAP3ISP_CCDC_LPF & ccdc_struct->flag); | |
700 | ccdc->update |= OMAP3ISP_CCDC_LPF; | |
701 | } | |
702 | ||
703 | if (OMAP3ISP_CCDC_BLCLAMP & ccdc_struct->update) { | |
704 | if (copy_from_user(&ccdc->clamp, ccdc_struct->bclamp, | |
705 | sizeof(ccdc->clamp))) { | |
706 | ccdc->shadow_update = 0; | |
707 | return -EFAULT; | |
708 | } | |
709 | ||
710 | ccdc->obclamp = !!(OMAP3ISP_CCDC_BLCLAMP & ccdc_struct->flag); | |
711 | ccdc->update |= OMAP3ISP_CCDC_BLCLAMP; | |
712 | } | |
713 | ||
714 | if (OMAP3ISP_CCDC_BCOMP & ccdc_struct->update) { | |
715 | if (copy_from_user(&ccdc->blcomp, ccdc_struct->blcomp, | |
716 | sizeof(ccdc->blcomp))) { | |
717 | ccdc->shadow_update = 0; | |
718 | return -EFAULT; | |
719 | } | |
720 | ||
721 | ccdc->update |= OMAP3ISP_CCDC_BCOMP; | |
722 | } | |
723 | ||
724 | ccdc->shadow_update = 0; | |
725 | ||
726 | if (OMAP3ISP_CCDC_FPC & ccdc_struct->update) { | |
727 | u32 table_old = 0; | |
728 | u32 table_new; | |
729 | u32 size; | |
730 | ||
731 | if (ccdc->state != ISP_PIPELINE_STREAM_STOPPED) | |
732 | return -EBUSY; | |
733 | ||
734 | ccdc->fpc_en = !!(OMAP3ISP_CCDC_FPC & ccdc_struct->flag); | |
735 | ||
736 | if (ccdc->fpc_en) { | |
737 | if (copy_from_user(&ccdc->fpc, ccdc_struct->fpc, | |
738 | sizeof(ccdc->fpc))) | |
739 | return -EFAULT; | |
740 | ||
741 | /* | |
742 | * table_new must be 64-bytes aligned, but it's | |
6c32df43 | 743 | * already done by omap_iommu_vmalloc(). |
de1135d4 LP |
744 | */ |
745 | size = ccdc->fpc.fpnum * 4; | |
fabdbca8 | 746 | table_new = omap_iommu_vmalloc(isp->domain, isp->dev, |
6c32df43 | 747 | 0, size, IOMMU_FLAG); |
de1135d4 LP |
748 | if (IS_ERR_VALUE(table_new)) |
749 | return -ENOMEM; | |
750 | ||
fabdbca8 | 751 | if (copy_from_user(omap_da_to_va(isp->dev, table_new), |
de1135d4 LP |
752 | (__force void __user *) |
753 | ccdc->fpc.fpcaddr, size)) { | |
fabdbca8 | 754 | omap_iommu_vfree(isp->domain, isp->dev, |
6c32df43 | 755 | table_new); |
de1135d4 LP |
756 | return -EFAULT; |
757 | } | |
758 | ||
759 | table_old = ccdc->fpc.fpcaddr; | |
760 | ccdc->fpc.fpcaddr = table_new; | |
761 | } | |
762 | ||
763 | ccdc_configure_fpc(ccdc); | |
764 | if (table_old != 0) | |
fabdbca8 | 765 | omap_iommu_vfree(isp->domain, isp->dev, table_old); |
de1135d4 LP |
766 | } |
767 | ||
768 | return ccdc_lsc_config(ccdc, ccdc_struct); | |
769 | } | |
770 | ||
771 | static void ccdc_apply_controls(struct isp_ccdc_device *ccdc) | |
772 | { | |
773 | if (ccdc->update & OMAP3ISP_CCDC_ALAW) { | |
774 | ccdc_configure_alaw(ccdc); | |
775 | ccdc->update &= ~OMAP3ISP_CCDC_ALAW; | |
776 | } | |
777 | ||
778 | if (ccdc->update & OMAP3ISP_CCDC_LPF) { | |
779 | ccdc_configure_lpf(ccdc); | |
780 | ccdc->update &= ~OMAP3ISP_CCDC_LPF; | |
781 | } | |
782 | ||
783 | if (ccdc->update & OMAP3ISP_CCDC_BLCLAMP) { | |
784 | ccdc_configure_clamp(ccdc); | |
785 | ccdc->update &= ~OMAP3ISP_CCDC_BLCLAMP; | |
786 | } | |
787 | ||
788 | if (ccdc->update & OMAP3ISP_CCDC_BCOMP) { | |
789 | ccdc_configure_black_comp(ccdc); | |
790 | ccdc->update &= ~OMAP3ISP_CCDC_BCOMP; | |
791 | } | |
792 | } | |
793 | ||
794 | /* | |
795 | * omap3isp_ccdc_restore_context - Restore values of the CCDC module registers | |
796 | * @dev: Pointer to ISP device | |
797 | */ | |
798 | void omap3isp_ccdc_restore_context(struct isp_device *isp) | |
799 | { | |
800 | struct isp_ccdc_device *ccdc = &isp->isp_ccdc; | |
801 | ||
802 | isp_reg_set(isp, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_CFG, ISPCCDC_CFG_VDLC); | |
803 | ||
804 | ccdc->update = OMAP3ISP_CCDC_ALAW | OMAP3ISP_CCDC_LPF | |
805 | | OMAP3ISP_CCDC_BLCLAMP | OMAP3ISP_CCDC_BCOMP; | |
806 | ccdc_apply_controls(ccdc); | |
807 | ccdc_configure_fpc(ccdc); | |
808 | } | |
809 | ||
810 | /* ----------------------------------------------------------------------------- | |
811 | * Format- and pipeline-related configuration helpers | |
812 | */ | |
813 | ||
814 | /* | |
815 | * ccdc_config_vp - Configure the Video Port. | |
816 | * @ccdc: Pointer to ISP CCDC device. | |
817 | */ | |
818 | static void ccdc_config_vp(struct isp_ccdc_device *ccdc) | |
819 | { | |
820 | struct isp_pipeline *pipe = to_isp_pipeline(&ccdc->subdev.entity); | |
821 | struct isp_device *isp = to_isp_device(ccdc); | |
73ea57eb | 822 | const struct isp_format_info *info; |
de1135d4 LP |
823 | unsigned long l3_ick = pipe->l3_ick; |
824 | unsigned int max_div = isp->revision == ISP_REVISION_15_0 ? 64 : 8; | |
825 | unsigned int div = 0; | |
826 | u32 fmtcfg_vp; | |
827 | ||
828 | fmtcfg_vp = isp_reg_readl(isp, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_FMTCFG) | |
829 | & ~(ISPCCDC_FMTCFG_VPIN_MASK | ISPCCDC_FMTCFG_VPIF_FRQ_MASK); | |
830 | ||
73ea57eb LP |
831 | info = omap3isp_video_format_info(ccdc->formats[CCDC_PAD_SINK].code); |
832 | ||
833 | switch (info->width) { | |
de1135d4 LP |
834 | case 8: |
835 | case 10: | |
836 | fmtcfg_vp |= ISPCCDC_FMTCFG_VPIN_9_0; | |
837 | break; | |
838 | case 11: | |
839 | fmtcfg_vp |= ISPCCDC_FMTCFG_VPIN_10_1; | |
840 | break; | |
841 | case 12: | |
842 | fmtcfg_vp |= ISPCCDC_FMTCFG_VPIN_11_2; | |
843 | break; | |
844 | case 13: | |
845 | fmtcfg_vp |= ISPCCDC_FMTCFG_VPIN_12_3; | |
846 | break; | |
13eaaa7f | 847 | } |
de1135d4 LP |
848 | |
849 | if (pipe->input) | |
850 | div = DIV_ROUND_UP(l3_ick, pipe->max_rate); | |
c6c01f97 SA |
851 | else if (pipe->external_rate) |
852 | div = l3_ick / pipe->external_rate; | |
de1135d4 LP |
853 | |
854 | div = clamp(div, 2U, max_div); | |
855 | fmtcfg_vp |= (div - 2) << ISPCCDC_FMTCFG_VPIF_FRQ_SHIFT; | |
856 | ||
857 | isp_reg_writel(isp, fmtcfg_vp, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_FMTCFG); | |
858 | } | |
859 | ||
860 | /* | |
861 | * ccdc_enable_vp - Enable Video Port. | |
862 | * @ccdc: Pointer to ISP CCDC device. | |
863 | * @enable: 0 Disables VP, 1 Enables VP | |
864 | * | |
865 | * This is needed for outputting image to Preview, H3A and HIST ISP submodules. | |
866 | */ | |
867 | static void ccdc_enable_vp(struct isp_ccdc_device *ccdc, u8 enable) | |
868 | { | |
869 | struct isp_device *isp = to_isp_device(ccdc); | |
870 | ||
871 | isp_reg_clr_set(isp, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_FMTCFG, | |
872 | ISPCCDC_FMTCFG_VPEN, enable ? ISPCCDC_FMTCFG_VPEN : 0); | |
873 | } | |
874 | ||
875 | /* | |
876 | * ccdc_config_outlineoffset - Configure memory saving output line offset | |
877 | * @ccdc: Pointer to ISP CCDC device. | |
878 | * @offset: Address offset to start a new line. Must be twice the | |
879 | * Output width and aligned on 32 byte boundary | |
880 | * @oddeven: Specifies the odd/even line pattern to be chosen to store the | |
881 | * output. | |
882 | * @numlines: Set the value 0-3 for +1-4lines, 4-7 for -1-4lines. | |
883 | * | |
884 | * - Configures the output line offset when stored in memory | |
885 | * - Sets the odd/even line pattern to store the output | |
886 | * (EVENEVEN (1), ODDEVEN (2), EVENODD (3), ODDODD (4)) | |
887 | * - Configures the number of even and odd line fields in case of rearranging | |
888 | * the lines. | |
889 | */ | |
890 | static void ccdc_config_outlineoffset(struct isp_ccdc_device *ccdc, | |
891 | u32 offset, u8 oddeven, u8 numlines) | |
892 | { | |
893 | struct isp_device *isp = to_isp_device(ccdc); | |
894 | ||
895 | isp_reg_writel(isp, offset & 0xffff, | |
896 | OMAP3_ISP_IOMEM_CCDC, ISPCCDC_HSIZE_OFF); | |
897 | ||
898 | isp_reg_clr(isp, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_SDOFST, | |
899 | ISPCCDC_SDOFST_FINV); | |
900 | ||
901 | isp_reg_clr(isp, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_SDOFST, | |
902 | ISPCCDC_SDOFST_FOFST_4L); | |
903 | ||
904 | switch (oddeven) { | |
905 | case EVENEVEN: | |
906 | isp_reg_set(isp, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_SDOFST, | |
907 | (numlines & 0x7) << ISPCCDC_SDOFST_LOFST0_SHIFT); | |
908 | break; | |
909 | case ODDEVEN: | |
910 | isp_reg_set(isp, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_SDOFST, | |
911 | (numlines & 0x7) << ISPCCDC_SDOFST_LOFST1_SHIFT); | |
912 | break; | |
913 | case EVENODD: | |
914 | isp_reg_set(isp, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_SDOFST, | |
915 | (numlines & 0x7) << ISPCCDC_SDOFST_LOFST2_SHIFT); | |
916 | break; | |
917 | case ODDODD: | |
918 | isp_reg_set(isp, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_SDOFST, | |
919 | (numlines & 0x7) << ISPCCDC_SDOFST_LOFST3_SHIFT); | |
920 | break; | |
921 | default: | |
922 | break; | |
923 | } | |
924 | } | |
925 | ||
926 | /* | |
927 | * ccdc_set_outaddr - Set memory address to save output image | |
928 | * @ccdc: Pointer to ISP CCDC device. | |
929 | * @addr: ISP MMU Mapped 32-bit memory address aligned on 32 byte boundary. | |
930 | * | |
931 | * Sets the memory address where the output will be saved. | |
932 | */ | |
933 | static void ccdc_set_outaddr(struct isp_ccdc_device *ccdc, u32 addr) | |
934 | { | |
935 | struct isp_device *isp = to_isp_device(ccdc); | |
936 | ||
937 | isp_reg_writel(isp, addr, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_SDR_ADDR); | |
938 | } | |
939 | ||
940 | /* | |
941 | * omap3isp_ccdc_max_rate - Calculate maximum input data rate based on the input | |
942 | * @ccdc: Pointer to ISP CCDC device. | |
943 | * @max_rate: Maximum calculated data rate. | |
944 | * | |
945 | * Returns in *max_rate less value between calculated and passed | |
946 | */ | |
947 | void omap3isp_ccdc_max_rate(struct isp_ccdc_device *ccdc, | |
948 | unsigned int *max_rate) | |
949 | { | |
950 | struct isp_pipeline *pipe = to_isp_pipeline(&ccdc->subdev.entity); | |
951 | unsigned int rate; | |
952 | ||
953 | if (pipe == NULL) | |
954 | return; | |
955 | ||
956 | /* | |
957 | * TRM says that for parallel sensors the maximum data rate | |
958 | * should be 90% form L3/2 clock, otherwise just L3/2. | |
959 | */ | |
960 | if (ccdc->input == CCDC_INPUT_PARALLEL) | |
961 | rate = pipe->l3_ick / 2 * 9 / 10; | |
962 | else | |
963 | rate = pipe->l3_ick / 2; | |
964 | ||
965 | *max_rate = min(*max_rate, rate); | |
966 | } | |
967 | ||
968 | /* | |
969 | * ccdc_config_sync_if - Set CCDC sync interface configuration | |
970 | * @ccdc: Pointer to ISP CCDC device. | |
73ea57eb LP |
971 | * @pdata: Parallel interface platform data (may be NULL) |
972 | * @data_size: Data size | |
de1135d4 LP |
973 | */ |
974 | static void ccdc_config_sync_if(struct isp_ccdc_device *ccdc, | |
73ea57eb LP |
975 | struct isp_parallel_platform_data *pdata, |
976 | unsigned int data_size) | |
de1135d4 LP |
977 | { |
978 | struct isp_device *isp = to_isp_device(ccdc); | |
c51364ca | 979 | const struct v4l2_mbus_framefmt *format; |
cf7a3d91 | 980 | u32 syn_mode = ISPCCDC_SYN_MODE_VDHDEN; |
de1135d4 | 981 | |
c51364ca LP |
982 | format = &ccdc->formats[CCDC_PAD_SINK]; |
983 | ||
984 | if (format->code == V4L2_MBUS_FMT_YUYV8_2X8 || | |
985 | format->code == V4L2_MBUS_FMT_UYVY8_2X8) { | |
986 | /* The bridge is enabled for YUV8 formats. Configure the input | |
987 | * mode accordingly. | |
988 | */ | |
989 | syn_mode |= ISPCCDC_SYN_MODE_INPMOD_YCBCR16; | |
990 | } | |
991 | ||
73ea57eb | 992 | switch (data_size) { |
de1135d4 LP |
993 | case 8: |
994 | syn_mode |= ISPCCDC_SYN_MODE_DATSIZ_8; | |
995 | break; | |
996 | case 10: | |
997 | syn_mode |= ISPCCDC_SYN_MODE_DATSIZ_10; | |
998 | break; | |
999 | case 11: | |
1000 | syn_mode |= ISPCCDC_SYN_MODE_DATSIZ_11; | |
1001 | break; | |
1002 | case 12: | |
1003 | syn_mode |= ISPCCDC_SYN_MODE_DATSIZ_12; | |
1004 | break; | |
13eaaa7f | 1005 | } |
de1135d4 | 1006 | |
73ea57eb | 1007 | if (pdata && pdata->data_pol) |
de1135d4 | 1008 | syn_mode |= ISPCCDC_SYN_MODE_DATAPOL; |
de1135d4 | 1009 | |
73ea57eb | 1010 | if (pdata && pdata->hs_pol) |
de1135d4 | 1011 | syn_mode |= ISPCCDC_SYN_MODE_HDPOL; |
de1135d4 | 1012 | |
73ea57eb | 1013 | if (pdata && pdata->vs_pol) |
de1135d4 | 1014 | syn_mode |= ISPCCDC_SYN_MODE_VDPOL; |
de1135d4 LP |
1015 | |
1016 | isp_reg_writel(isp, syn_mode, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_SYN_MODE); | |
c51364ca LP |
1017 | |
1018 | /* The CCDC_CFG.Y8POS bit is used in YCbCr8 input mode only. The | |
1019 | * hardware seems to ignore it in all other input modes. | |
1020 | */ | |
1021 | if (format->code == V4L2_MBUS_FMT_UYVY8_2X8) | |
1022 | isp_reg_set(isp, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_CFG, | |
1023 | ISPCCDC_CFG_Y8POS); | |
1024 | else | |
1025 | isp_reg_clr(isp, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_CFG, | |
1026 | ISPCCDC_CFG_Y8POS); | |
1027 | ||
1028 | isp_reg_clr(isp, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_REC656IF, | |
1029 | ISPCCDC_REC656IF_R656ON); | |
de1135d4 LP |
1030 | } |
1031 | ||
1032 | /* CCDC formats descriptions */ | |
1033 | static const u32 ccdc_sgrbg_pattern = | |
1034 | ISPCCDC_COLPTN_Gr_Cy << ISPCCDC_COLPTN_CP0PLC0_SHIFT | | |
1035 | ISPCCDC_COLPTN_R_Ye << ISPCCDC_COLPTN_CP0PLC1_SHIFT | | |
1036 | ISPCCDC_COLPTN_Gr_Cy << ISPCCDC_COLPTN_CP0PLC2_SHIFT | | |
1037 | ISPCCDC_COLPTN_R_Ye << ISPCCDC_COLPTN_CP0PLC3_SHIFT | | |
1038 | ISPCCDC_COLPTN_B_Mg << ISPCCDC_COLPTN_CP1PLC0_SHIFT | | |
1039 | ISPCCDC_COLPTN_Gb_G << ISPCCDC_COLPTN_CP1PLC1_SHIFT | | |
1040 | ISPCCDC_COLPTN_B_Mg << ISPCCDC_COLPTN_CP1PLC2_SHIFT | | |
1041 | ISPCCDC_COLPTN_Gb_G << ISPCCDC_COLPTN_CP1PLC3_SHIFT | | |
1042 | ISPCCDC_COLPTN_Gr_Cy << ISPCCDC_COLPTN_CP2PLC0_SHIFT | | |
1043 | ISPCCDC_COLPTN_R_Ye << ISPCCDC_COLPTN_CP2PLC1_SHIFT | | |
1044 | ISPCCDC_COLPTN_Gr_Cy << ISPCCDC_COLPTN_CP2PLC2_SHIFT | | |
1045 | ISPCCDC_COLPTN_R_Ye << ISPCCDC_COLPTN_CP2PLC3_SHIFT | | |
1046 | ISPCCDC_COLPTN_B_Mg << ISPCCDC_COLPTN_CP3PLC0_SHIFT | | |
1047 | ISPCCDC_COLPTN_Gb_G << ISPCCDC_COLPTN_CP3PLC1_SHIFT | | |
1048 | ISPCCDC_COLPTN_B_Mg << ISPCCDC_COLPTN_CP3PLC2_SHIFT | | |
1049 | ISPCCDC_COLPTN_Gb_G << ISPCCDC_COLPTN_CP3PLC3_SHIFT; | |
1050 | ||
1051 | static const u32 ccdc_srggb_pattern = | |
1052 | ISPCCDC_COLPTN_R_Ye << ISPCCDC_COLPTN_CP0PLC0_SHIFT | | |
1053 | ISPCCDC_COLPTN_Gr_Cy << ISPCCDC_COLPTN_CP0PLC1_SHIFT | | |
1054 | ISPCCDC_COLPTN_R_Ye << ISPCCDC_COLPTN_CP0PLC2_SHIFT | | |
1055 | ISPCCDC_COLPTN_Gr_Cy << ISPCCDC_COLPTN_CP0PLC3_SHIFT | | |
1056 | ISPCCDC_COLPTN_Gb_G << ISPCCDC_COLPTN_CP1PLC0_SHIFT | | |
1057 | ISPCCDC_COLPTN_B_Mg << ISPCCDC_COLPTN_CP1PLC1_SHIFT | | |
1058 | ISPCCDC_COLPTN_Gb_G << ISPCCDC_COLPTN_CP1PLC2_SHIFT | | |
1059 | ISPCCDC_COLPTN_B_Mg << ISPCCDC_COLPTN_CP1PLC3_SHIFT | | |
1060 | ISPCCDC_COLPTN_R_Ye << ISPCCDC_COLPTN_CP2PLC0_SHIFT | | |
1061 | ISPCCDC_COLPTN_Gr_Cy << ISPCCDC_COLPTN_CP2PLC1_SHIFT | | |
1062 | ISPCCDC_COLPTN_R_Ye << ISPCCDC_COLPTN_CP2PLC2_SHIFT | | |
1063 | ISPCCDC_COLPTN_Gr_Cy << ISPCCDC_COLPTN_CP2PLC3_SHIFT | | |
1064 | ISPCCDC_COLPTN_Gb_G << ISPCCDC_COLPTN_CP3PLC0_SHIFT | | |
1065 | ISPCCDC_COLPTN_B_Mg << ISPCCDC_COLPTN_CP3PLC1_SHIFT | | |
1066 | ISPCCDC_COLPTN_Gb_G << ISPCCDC_COLPTN_CP3PLC2_SHIFT | | |
1067 | ISPCCDC_COLPTN_B_Mg << ISPCCDC_COLPTN_CP3PLC3_SHIFT; | |
1068 | ||
1069 | static const u32 ccdc_sbggr_pattern = | |
1070 | ISPCCDC_COLPTN_B_Mg << ISPCCDC_COLPTN_CP0PLC0_SHIFT | | |
1071 | ISPCCDC_COLPTN_Gb_G << ISPCCDC_COLPTN_CP0PLC1_SHIFT | | |
1072 | ISPCCDC_COLPTN_B_Mg << ISPCCDC_COLPTN_CP0PLC2_SHIFT | | |
1073 | ISPCCDC_COLPTN_Gb_G << ISPCCDC_COLPTN_CP0PLC3_SHIFT | | |
1074 | ISPCCDC_COLPTN_Gr_Cy << ISPCCDC_COLPTN_CP1PLC0_SHIFT | | |
1075 | ISPCCDC_COLPTN_R_Ye << ISPCCDC_COLPTN_CP1PLC1_SHIFT | | |
1076 | ISPCCDC_COLPTN_Gr_Cy << ISPCCDC_COLPTN_CP1PLC2_SHIFT | | |
1077 | ISPCCDC_COLPTN_R_Ye << ISPCCDC_COLPTN_CP1PLC3_SHIFT | | |
1078 | ISPCCDC_COLPTN_B_Mg << ISPCCDC_COLPTN_CP2PLC0_SHIFT | | |
1079 | ISPCCDC_COLPTN_Gb_G << ISPCCDC_COLPTN_CP2PLC1_SHIFT | | |
1080 | ISPCCDC_COLPTN_B_Mg << ISPCCDC_COLPTN_CP2PLC2_SHIFT | | |
1081 | ISPCCDC_COLPTN_Gb_G << ISPCCDC_COLPTN_CP2PLC3_SHIFT | | |
1082 | ISPCCDC_COLPTN_Gr_Cy << ISPCCDC_COLPTN_CP3PLC0_SHIFT | | |
1083 | ISPCCDC_COLPTN_R_Ye << ISPCCDC_COLPTN_CP3PLC1_SHIFT | | |
1084 | ISPCCDC_COLPTN_Gr_Cy << ISPCCDC_COLPTN_CP3PLC2_SHIFT | | |
1085 | ISPCCDC_COLPTN_R_Ye << ISPCCDC_COLPTN_CP3PLC3_SHIFT; | |
1086 | ||
1087 | static const u32 ccdc_sgbrg_pattern = | |
1088 | ISPCCDC_COLPTN_Gb_G << ISPCCDC_COLPTN_CP0PLC0_SHIFT | | |
1089 | ISPCCDC_COLPTN_B_Mg << ISPCCDC_COLPTN_CP0PLC1_SHIFT | | |
1090 | ISPCCDC_COLPTN_Gb_G << ISPCCDC_COLPTN_CP0PLC2_SHIFT | | |
1091 | ISPCCDC_COLPTN_B_Mg << ISPCCDC_COLPTN_CP0PLC3_SHIFT | | |
1092 | ISPCCDC_COLPTN_R_Ye << ISPCCDC_COLPTN_CP1PLC0_SHIFT | | |
1093 | ISPCCDC_COLPTN_Gr_Cy << ISPCCDC_COLPTN_CP1PLC1_SHIFT | | |
1094 | ISPCCDC_COLPTN_R_Ye << ISPCCDC_COLPTN_CP1PLC2_SHIFT | | |
1095 | ISPCCDC_COLPTN_Gr_Cy << ISPCCDC_COLPTN_CP1PLC3_SHIFT | | |
1096 | ISPCCDC_COLPTN_Gb_G << ISPCCDC_COLPTN_CP2PLC0_SHIFT | | |
1097 | ISPCCDC_COLPTN_B_Mg << ISPCCDC_COLPTN_CP2PLC1_SHIFT | | |
1098 | ISPCCDC_COLPTN_Gb_G << ISPCCDC_COLPTN_CP2PLC2_SHIFT | | |
1099 | ISPCCDC_COLPTN_B_Mg << ISPCCDC_COLPTN_CP2PLC3_SHIFT | | |
1100 | ISPCCDC_COLPTN_R_Ye << ISPCCDC_COLPTN_CP3PLC0_SHIFT | | |
1101 | ISPCCDC_COLPTN_Gr_Cy << ISPCCDC_COLPTN_CP3PLC1_SHIFT | | |
1102 | ISPCCDC_COLPTN_R_Ye << ISPCCDC_COLPTN_CP3PLC2_SHIFT | | |
1103 | ISPCCDC_COLPTN_Gr_Cy << ISPCCDC_COLPTN_CP3PLC3_SHIFT; | |
1104 | ||
1105 | static void ccdc_configure(struct isp_ccdc_device *ccdc) | |
1106 | { | |
1107 | struct isp_device *isp = to_isp_device(ccdc); | |
1108 | struct isp_parallel_platform_data *pdata = NULL; | |
1109 | struct v4l2_subdev *sensor; | |
1110 | struct v4l2_mbus_framefmt *format; | |
a64909b8 | 1111 | const struct v4l2_rect *crop; |
c09af044 MJ |
1112 | const struct isp_format_info *fmt_info; |
1113 | struct v4l2_subdev_format fmt_src; | |
1114 | unsigned int depth_out; | |
1115 | unsigned int depth_in = 0; | |
de1135d4 LP |
1116 | struct media_pad *pad; |
1117 | unsigned long flags; | |
c51364ca | 1118 | unsigned int bridge; |
c09af044 | 1119 | unsigned int shift; |
de1135d4 LP |
1120 | u32 syn_mode; |
1121 | u32 ccdc_pattern; | |
1122 | ||
c09af044 MJ |
1123 | pad = media_entity_remote_source(&ccdc->pads[CCDC_PAD_SINK]); |
1124 | sensor = media_entity_to_v4l2_subdev(pad->entity); | |
1125 | if (ccdc->input == CCDC_INPUT_PARALLEL) | |
de1135d4 LP |
1126 | pdata = &((struct isp_v4l2_subdevs_group *)sensor->host_priv) |
1127 | ->bus.parallel; | |
c09af044 | 1128 | |
c51364ca LP |
1129 | /* Compute the lane shifter shift value and enable the bridge when the |
1130 | * input format is YUV. | |
1131 | */ | |
c09af044 MJ |
1132 | fmt_src.pad = pad->index; |
1133 | fmt_src.which = V4L2_SUBDEV_FORMAT_ACTIVE; | |
1134 | if (!v4l2_subdev_call(sensor, pad, get_fmt, NULL, &fmt_src)) { | |
1135 | fmt_info = omap3isp_video_format_info(fmt_src.format.code); | |
1697e49a | 1136 | depth_in = fmt_info->width; |
de1135d4 LP |
1137 | } |
1138 | ||
c09af044 MJ |
1139 | fmt_info = omap3isp_video_format_info |
1140 | (isp->isp_ccdc.formats[CCDC_PAD_SINK].code); | |
1697e49a | 1141 | depth_out = fmt_info->width; |
c09af044 | 1142 | shift = depth_in - depth_out; |
de1135d4 | 1143 | |
c51364ca LP |
1144 | if (fmt_info->code == V4L2_MBUS_FMT_YUYV8_2X8) |
1145 | bridge = ISPCTRL_PAR_BRIDGE_LENDIAN; | |
1146 | else if (fmt_info->code == V4L2_MBUS_FMT_UYVY8_2X8) | |
1147 | bridge = ISPCTRL_PAR_BRIDGE_BENDIAN; | |
1148 | else | |
1149 | bridge = ISPCTRL_PAR_BRIDGE_DISABLE; | |
de1135d4 | 1150 | |
c51364ca LP |
1151 | omap3isp_configure_bridge(isp, ccdc->input, pdata, shift, bridge); |
1152 | ||
1153 | ccdc_config_sync_if(ccdc, pdata, depth_out); | |
de1135d4 LP |
1154 | |
1155 | syn_mode = isp_reg_readl(isp, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_SYN_MODE); | |
1156 | ||
1157 | /* Use the raw, unprocessed data when writing to memory. The H3A and | |
1158 | * histogram modules are still fed with lens shading corrected data. | |
1159 | */ | |
1160 | syn_mode &= ~ISPCCDC_SYN_MODE_VP2SDR; | |
1161 | ||
1162 | if (ccdc->output & CCDC_OUTPUT_MEMORY) | |
1163 | syn_mode |= ISPCCDC_SYN_MODE_WEN; | |
1164 | else | |
1165 | syn_mode &= ~ISPCCDC_SYN_MODE_WEN; | |
1166 | ||
1167 | if (ccdc->output & CCDC_OUTPUT_RESIZER) | |
1168 | syn_mode |= ISPCCDC_SYN_MODE_SDR2RSZ; | |
1169 | else | |
1170 | syn_mode &= ~ISPCCDC_SYN_MODE_SDR2RSZ; | |
1171 | ||
c51364ca LP |
1172 | /* CCDC_PAD_SINK */ |
1173 | format = &ccdc->formats[CCDC_PAD_SINK]; | |
de1135d4 LP |
1174 | |
1175 | /* Mosaic filter */ | |
1176 | switch (format->code) { | |
1177 | case V4L2_MBUS_FMT_SRGGB10_1X10: | |
1178 | case V4L2_MBUS_FMT_SRGGB12_1X12: | |
1179 | ccdc_pattern = ccdc_srggb_pattern; | |
1180 | break; | |
1181 | case V4L2_MBUS_FMT_SBGGR10_1X10: | |
1182 | case V4L2_MBUS_FMT_SBGGR12_1X12: | |
1183 | ccdc_pattern = ccdc_sbggr_pattern; | |
1184 | break; | |
1185 | case V4L2_MBUS_FMT_SGBRG10_1X10: | |
1186 | case V4L2_MBUS_FMT_SGBRG12_1X12: | |
1187 | ccdc_pattern = ccdc_sgbrg_pattern; | |
1188 | break; | |
1189 | default: | |
1190 | /* Use GRBG */ | |
1191 | ccdc_pattern = ccdc_sgrbg_pattern; | |
1192 | break; | |
1193 | } | |
1194 | ccdc_config_imgattr(ccdc, ccdc_pattern); | |
1195 | ||
1196 | /* Generate VD0 on the last line of the image and VD1 on the | |
1197 | * 2/3 height line. | |
1198 | */ | |
1199 | isp_reg_writel(isp, ((format->height - 2) << ISPCCDC_VDINT_0_SHIFT) | | |
1200 | ((format->height * 2 / 3) << ISPCCDC_VDINT_1_SHIFT), | |
1201 | OMAP3_ISP_IOMEM_CCDC, ISPCCDC_VDINT); | |
1202 | ||
1203 | /* CCDC_PAD_SOURCE_OF */ | |
c51364ca | 1204 | format = &ccdc->formats[CCDC_PAD_SOURCE_OF]; |
a64909b8 | 1205 | crop = &ccdc->crop; |
de1135d4 | 1206 | |
a64909b8 LP |
1207 | isp_reg_writel(isp, (crop->left << ISPCCDC_HORZ_INFO_SPH_SHIFT) | |
1208 | ((crop->width - 1) << ISPCCDC_HORZ_INFO_NPH_SHIFT), | |
de1135d4 | 1209 | OMAP3_ISP_IOMEM_CCDC, ISPCCDC_HORZ_INFO); |
a64909b8 | 1210 | isp_reg_writel(isp, crop->top << ISPCCDC_VERT_START_SLV0_SHIFT, |
de1135d4 | 1211 | OMAP3_ISP_IOMEM_CCDC, ISPCCDC_VERT_START); |
a64909b8 | 1212 | isp_reg_writel(isp, (crop->height - 1) |
de1135d4 LP |
1213 | << ISPCCDC_VERT_LINES_NLV_SHIFT, |
1214 | OMAP3_ISP_IOMEM_CCDC, ISPCCDC_VERT_LINES); | |
1215 | ||
1216 | ccdc_config_outlineoffset(ccdc, ccdc->video_out.bpl_value, 0, 0); | |
1217 | ||
c51364ca LP |
1218 | /* The CCDC outputs data in UYVY order by default. Swap bytes to get |
1219 | * YUYV. | |
1220 | */ | |
1221 | if (format->code == V4L2_MBUS_FMT_YUYV8_1X16) | |
1222 | isp_reg_set(isp, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_CFG, | |
1223 | ISPCCDC_CFG_BSWD); | |
1224 | else | |
1225 | isp_reg_clr(isp, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_CFG, | |
1226 | ISPCCDC_CFG_BSWD); | |
1227 | ||
1228 | /* Use PACK8 mode for 1byte per pixel formats. */ | |
1229 | if (omap3isp_video_format_info(format->code)->width <= 8) | |
1230 | syn_mode |= ISPCCDC_SYN_MODE_PACK8; | |
1231 | else | |
1232 | syn_mode &= ~ISPCCDC_SYN_MODE_PACK8; | |
1233 | ||
1234 | isp_reg_writel(isp, syn_mode, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_SYN_MODE); | |
1235 | ||
de1135d4 LP |
1236 | /* CCDC_PAD_SOURCE_VP */ |
1237 | format = &ccdc->formats[CCDC_PAD_SOURCE_VP]; | |
1238 | ||
1239 | isp_reg_writel(isp, (0 << ISPCCDC_FMT_HORZ_FMTSPH_SHIFT) | | |
1240 | (format->width << ISPCCDC_FMT_HORZ_FMTLNH_SHIFT), | |
1241 | OMAP3_ISP_IOMEM_CCDC, ISPCCDC_FMT_HORZ); | |
1242 | isp_reg_writel(isp, (0 << ISPCCDC_FMT_VERT_FMTSLV_SHIFT) | | |
1243 | ((format->height + 1) << ISPCCDC_FMT_VERT_FMTLNV_SHIFT), | |
1244 | OMAP3_ISP_IOMEM_CCDC, ISPCCDC_FMT_VERT); | |
1245 | ||
1246 | isp_reg_writel(isp, (format->width << ISPCCDC_VP_OUT_HORZ_NUM_SHIFT) | | |
1247 | (format->height << ISPCCDC_VP_OUT_VERT_NUM_SHIFT), | |
1248 | OMAP3_ISP_IOMEM_CCDC, ISPCCDC_VP_OUT); | |
1249 | ||
c51364ca | 1250 | /* Lens shading correction. */ |
de1135d4 LP |
1251 | spin_lock_irqsave(&ccdc->lsc.req_lock, flags); |
1252 | if (ccdc->lsc.request == NULL) | |
1253 | goto unlock; | |
1254 | ||
1255 | WARN_ON(ccdc->lsc.active); | |
1256 | ||
1257 | /* Get last good LSC configuration. If it is not supported for | |
1258 | * the current active resolution discard it. | |
1259 | */ | |
1260 | if (ccdc->lsc.active == NULL && | |
1261 | __ccdc_lsc_configure(ccdc, ccdc->lsc.request) == 0) { | |
1262 | ccdc->lsc.active = ccdc->lsc.request; | |
1263 | } else { | |
1264 | list_add_tail(&ccdc->lsc.request->list, &ccdc->lsc.free_queue); | |
1265 | schedule_work(&ccdc->lsc.table_work); | |
1266 | } | |
1267 | ||
1268 | ccdc->lsc.request = NULL; | |
1269 | ||
1270 | unlock: | |
1271 | spin_unlock_irqrestore(&ccdc->lsc.req_lock, flags); | |
1272 | ||
1273 | ccdc_apply_controls(ccdc); | |
1274 | } | |
1275 | ||
1276 | static void __ccdc_enable(struct isp_ccdc_device *ccdc, int enable) | |
1277 | { | |
1278 | struct isp_device *isp = to_isp_device(ccdc); | |
1279 | ||
1280 | isp_reg_clr_set(isp, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_PCR, | |
1281 | ISPCCDC_PCR_EN, enable ? ISPCCDC_PCR_EN : 0); | |
1282 | } | |
1283 | ||
1284 | static int ccdc_disable(struct isp_ccdc_device *ccdc) | |
1285 | { | |
1286 | unsigned long flags; | |
1287 | int ret = 0; | |
1288 | ||
1289 | spin_lock_irqsave(&ccdc->lock, flags); | |
1290 | if (ccdc->state == ISP_PIPELINE_STREAM_CONTINUOUS) | |
1291 | ccdc->stopping = CCDC_STOP_REQUEST; | |
1292 | spin_unlock_irqrestore(&ccdc->lock, flags); | |
1293 | ||
1294 | ret = wait_event_timeout(ccdc->wait, | |
1295 | ccdc->stopping == CCDC_STOP_FINISHED, | |
1296 | msecs_to_jiffies(2000)); | |
1297 | if (ret == 0) { | |
1298 | ret = -ETIMEDOUT; | |
1299 | dev_warn(to_device(ccdc), "CCDC stop timeout!\n"); | |
1300 | } | |
1301 | ||
1302 | omap3isp_sbl_disable(to_isp_device(ccdc), OMAP3_ISP_SBL_CCDC_LSC_READ); | |
1303 | ||
1304 | mutex_lock(&ccdc->ioctl_lock); | |
1305 | ccdc_lsc_free_request(ccdc, ccdc->lsc.request); | |
1306 | ccdc->lsc.request = ccdc->lsc.active; | |
1307 | ccdc->lsc.active = NULL; | |
1308 | cancel_work_sync(&ccdc->lsc.table_work); | |
1309 | ccdc_lsc_free_queue(ccdc, &ccdc->lsc.free_queue); | |
1310 | mutex_unlock(&ccdc->ioctl_lock); | |
1311 | ||
1312 | ccdc->stopping = CCDC_STOP_NOT_REQUESTED; | |
1313 | ||
1314 | return ret > 0 ? 0 : ret; | |
1315 | } | |
1316 | ||
1317 | static void ccdc_enable(struct isp_ccdc_device *ccdc) | |
1318 | { | |
1319 | if (ccdc_lsc_is_configured(ccdc)) | |
1320 | __ccdc_lsc_enable(ccdc, 1); | |
1321 | __ccdc_enable(ccdc, 1); | |
1322 | } | |
1323 | ||
1324 | /* ----------------------------------------------------------------------------- | |
1325 | * Interrupt handling | |
1326 | */ | |
1327 | ||
1328 | /* | |
1329 | * ccdc_sbl_busy - Poll idle state of CCDC and related SBL memory write bits | |
1330 | * @ccdc: Pointer to ISP CCDC device. | |
1331 | * | |
1332 | * Returns zero if the CCDC is idle and the image has been written to | |
1333 | * memory, too. | |
1334 | */ | |
1335 | static int ccdc_sbl_busy(struct isp_ccdc_device *ccdc) | |
1336 | { | |
1337 | struct isp_device *isp = to_isp_device(ccdc); | |
1338 | ||
1339 | return omap3isp_ccdc_busy(ccdc) | |
1340 | | (isp_reg_readl(isp, OMAP3_ISP_IOMEM_SBL, ISPSBL_CCDC_WR_0) & | |
1341 | ISPSBL_CCDC_WR_0_DATA_READY) | |
1342 | | (isp_reg_readl(isp, OMAP3_ISP_IOMEM_SBL, ISPSBL_CCDC_WR_1) & | |
1343 | ISPSBL_CCDC_WR_0_DATA_READY) | |
1344 | | (isp_reg_readl(isp, OMAP3_ISP_IOMEM_SBL, ISPSBL_CCDC_WR_2) & | |
1345 | ISPSBL_CCDC_WR_0_DATA_READY) | |
1346 | | (isp_reg_readl(isp, OMAP3_ISP_IOMEM_SBL, ISPSBL_CCDC_WR_3) & | |
1347 | ISPSBL_CCDC_WR_0_DATA_READY); | |
1348 | } | |
1349 | ||
1350 | /* | |
1351 | * ccdc_sbl_wait_idle - Wait until the CCDC and related SBL are idle | |
1352 | * @ccdc: Pointer to ISP CCDC device. | |
1353 | * @max_wait: Max retry count in us for wait for idle/busy transition. | |
1354 | */ | |
1355 | static int ccdc_sbl_wait_idle(struct isp_ccdc_device *ccdc, | |
1356 | unsigned int max_wait) | |
1357 | { | |
1358 | unsigned int wait = 0; | |
1359 | ||
1360 | if (max_wait == 0) | |
1361 | max_wait = 10000; /* 10 ms */ | |
1362 | ||
1363 | for (wait = 0; wait <= max_wait; wait++) { | |
1364 | if (!ccdc_sbl_busy(ccdc)) | |
1365 | return 0; | |
1366 | ||
1367 | rmb(); | |
1368 | udelay(1); | |
1369 | } | |
1370 | ||
1371 | return -EBUSY; | |
1372 | } | |
1373 | ||
1374 | /* __ccdc_handle_stopping - Handle CCDC and/or LSC stopping sequence | |
1375 | * @ccdc: Pointer to ISP CCDC device. | |
1376 | * @event: Pointing which event trigger handler | |
1377 | * | |
2d4e9d1d | 1378 | * Return 1 when the event and stopping request combination is satisfied, |
de1135d4 LP |
1379 | * zero otherwise. |
1380 | */ | |
1381 | static int __ccdc_handle_stopping(struct isp_ccdc_device *ccdc, u32 event) | |
1382 | { | |
1383 | int rval = 0; | |
1384 | ||
1385 | switch ((ccdc->stopping & 3) | event) { | |
1386 | case CCDC_STOP_REQUEST | CCDC_EVENT_VD1: | |
1387 | if (ccdc->lsc.state != LSC_STATE_STOPPED) | |
1388 | __ccdc_lsc_enable(ccdc, 0); | |
1389 | __ccdc_enable(ccdc, 0); | |
1390 | ccdc->stopping = CCDC_STOP_EXECUTED; | |
1391 | return 1; | |
1392 | ||
1393 | case CCDC_STOP_EXECUTED | CCDC_EVENT_VD0: | |
1394 | ccdc->stopping |= CCDC_STOP_CCDC_FINISHED; | |
1395 | if (ccdc->lsc.state == LSC_STATE_STOPPED) | |
1396 | ccdc->stopping |= CCDC_STOP_LSC_FINISHED; | |
1397 | rval = 1; | |
1398 | break; | |
1399 | ||
1400 | case CCDC_STOP_EXECUTED | CCDC_EVENT_LSC_DONE: | |
1401 | ccdc->stopping |= CCDC_STOP_LSC_FINISHED; | |
1402 | rval = 1; | |
1403 | break; | |
1404 | ||
1405 | case CCDC_STOP_EXECUTED | CCDC_EVENT_VD1: | |
1406 | return 1; | |
1407 | } | |
1408 | ||
1409 | if (ccdc->stopping == CCDC_STOP_FINISHED) { | |
1410 | wake_up(&ccdc->wait); | |
1411 | rval = 1; | |
1412 | } | |
1413 | ||
1414 | return rval; | |
1415 | } | |
1416 | ||
1417 | static void ccdc_hs_vs_isr(struct isp_ccdc_device *ccdc) | |
1418 | { | |
bd0f2e6d | 1419 | struct isp_pipeline *pipe = to_isp_pipeline(&ccdc->subdev.entity); |
63ae37ea | 1420 | struct video_device *vdev = ccdc->subdev.devnode; |
de1135d4 LP |
1421 | struct v4l2_event event; |
1422 | ||
b43883d6 LP |
1423 | /* Frame number propagation */ |
1424 | atomic_inc(&pipe->frame_number); | |
1425 | ||
de1135d4 | 1426 | memset(&event, 0, sizeof(event)); |
69d232ae SA |
1427 | event.type = V4L2_EVENT_FRAME_SYNC; |
1428 | event.u.frame_sync.frame_sequence = atomic_read(&pipe->frame_number); | |
de1135d4 LP |
1429 | |
1430 | v4l2_event_queue(vdev, &event); | |
1431 | } | |
1432 | ||
1433 | /* | |
1434 | * ccdc_lsc_isr - Handle LSC events | |
1435 | * @ccdc: Pointer to ISP CCDC device. | |
1436 | * @events: LSC events | |
1437 | */ | |
1438 | static void ccdc_lsc_isr(struct isp_ccdc_device *ccdc, u32 events) | |
1439 | { | |
1440 | unsigned long flags; | |
1441 | ||
1442 | if (events & IRQ0STATUS_CCDC_LSC_PREF_ERR_IRQ) { | |
875e2e3e LP |
1443 | struct isp_pipeline *pipe = |
1444 | to_isp_pipeline(&ccdc->subdev.entity); | |
1445 | ||
de1135d4 | 1446 | ccdc_lsc_error_handler(ccdc); |
875e2e3e | 1447 | pipe->error = true; |
de1135d4 LP |
1448 | dev_dbg(to_device(ccdc), "lsc prefetch error\n"); |
1449 | } | |
1450 | ||
1451 | if (!(events & IRQ0STATUS_CCDC_LSC_DONE_IRQ)) | |
1452 | return; | |
1453 | ||
1454 | /* LSC_DONE interrupt occur, there are two cases | |
1455 | * 1. stopping for reconfiguration | |
1456 | * 2. stopping because of STREAM OFF command | |
1457 | */ | |
1458 | spin_lock_irqsave(&ccdc->lsc.req_lock, flags); | |
1459 | ||
1460 | if (ccdc->lsc.state == LSC_STATE_STOPPING) | |
1461 | ccdc->lsc.state = LSC_STATE_STOPPED; | |
1462 | ||
1463 | if (__ccdc_handle_stopping(ccdc, CCDC_EVENT_LSC_DONE)) | |
1464 | goto done; | |
1465 | ||
1466 | if (ccdc->lsc.state != LSC_STATE_RECONFIG) | |
1467 | goto done; | |
1468 | ||
1469 | /* LSC is in STOPPING state, change to the new state */ | |
1470 | ccdc->lsc.state = LSC_STATE_STOPPED; | |
1471 | ||
1472 | /* This is an exception. Start of frame and LSC_DONE interrupt | |
1473 | * have been received on the same time. Skip this event and wait | |
1474 | * for better times. | |
1475 | */ | |
1476 | if (events & IRQ0STATUS_HS_VS_IRQ) | |
1477 | goto done; | |
1478 | ||
1479 | /* The LSC engine is stopped at this point. Enable it if there's a | |
1480 | * pending request. | |
1481 | */ | |
1482 | if (ccdc->lsc.request == NULL) | |
1483 | goto done; | |
1484 | ||
1485 | ccdc_lsc_enable(ccdc); | |
1486 | ||
1487 | done: | |
1488 | spin_unlock_irqrestore(&ccdc->lsc.req_lock, flags); | |
1489 | } | |
1490 | ||
1491 | static int ccdc_isr_buffer(struct isp_ccdc_device *ccdc) | |
1492 | { | |
1493 | struct isp_pipeline *pipe = to_isp_pipeline(&ccdc->subdev.entity); | |
1494 | struct isp_device *isp = to_isp_device(ccdc); | |
1495 | struct isp_buffer *buffer; | |
1496 | int restart = 0; | |
1497 | ||
1498 | /* The CCDC generates VD0 interrupts even when disabled (the datasheet | |
1499 | * doesn't explicitly state if that's supposed to happen or not, so it | |
1500 | * can be considered as a hardware bug or as a feature, but we have to | |
1501 | * deal with it anyway). Disabling the CCDC when no buffer is available | |
1502 | * would thus not be enough, we need to handle the situation explicitly. | |
1503 | */ | |
1504 | if (list_empty(&ccdc->video_out.dmaqueue)) | |
1505 | goto done; | |
1506 | ||
1507 | /* We're in continuous mode, and memory writes were disabled due to a | |
1508 | * buffer underrun. Reenable them now that we have a buffer. The buffer | |
1509 | * address has been set in ccdc_video_queue. | |
1510 | */ | |
1511 | if (ccdc->state == ISP_PIPELINE_STREAM_CONTINUOUS && ccdc->underrun) { | |
1512 | restart = 1; | |
1513 | ccdc->underrun = 0; | |
1514 | goto done; | |
1515 | } | |
1516 | ||
1517 | if (ccdc_sbl_wait_idle(ccdc, 1000)) { | |
1518 | dev_info(isp->dev, "CCDC won't become idle!\n"); | |
1519 | goto done; | |
1520 | } | |
1521 | ||
875e2e3e | 1522 | buffer = omap3isp_video_buffer_next(&ccdc->video_out); |
de1135d4 LP |
1523 | if (buffer != NULL) { |
1524 | ccdc_set_outaddr(ccdc, buffer->isp_addr); | |
1525 | restart = 1; | |
1526 | } | |
1527 | ||
1528 | pipe->state |= ISP_PIPELINE_IDLE_OUTPUT; | |
1529 | ||
1530 | if (ccdc->state == ISP_PIPELINE_STREAM_SINGLESHOT && | |
1531 | isp_pipeline_ready(pipe)) | |
1532 | omap3isp_pipeline_set_stream(pipe, | |
1533 | ISP_PIPELINE_STREAM_SINGLESHOT); | |
1534 | ||
1535 | done: | |
de1135d4 LP |
1536 | return restart; |
1537 | } | |
1538 | ||
1539 | /* | |
1540 | * ccdc_vd0_isr - Handle VD0 event | |
1541 | * @ccdc: Pointer to ISP CCDC device. | |
1542 | * | |
1543 | * Executes LSC deferred enablement before next frame starts. | |
1544 | */ | |
1545 | static void ccdc_vd0_isr(struct isp_ccdc_device *ccdc) | |
1546 | { | |
1547 | unsigned long flags; | |
1548 | int restart = 0; | |
1549 | ||
1550 | if (ccdc->output & CCDC_OUTPUT_MEMORY) | |
1551 | restart = ccdc_isr_buffer(ccdc); | |
1552 | ||
1553 | spin_lock_irqsave(&ccdc->lock, flags); | |
1554 | if (__ccdc_handle_stopping(ccdc, CCDC_EVENT_VD0)) { | |
1555 | spin_unlock_irqrestore(&ccdc->lock, flags); | |
1556 | return; | |
1557 | } | |
1558 | ||
1559 | if (!ccdc->shadow_update) | |
1560 | ccdc_apply_controls(ccdc); | |
1561 | spin_unlock_irqrestore(&ccdc->lock, flags); | |
1562 | ||
1563 | if (restart) | |
1564 | ccdc_enable(ccdc); | |
1565 | } | |
1566 | ||
1567 | /* | |
1568 | * ccdc_vd1_isr - Handle VD1 event | |
1569 | * @ccdc: Pointer to ISP CCDC device. | |
1570 | */ | |
1571 | static void ccdc_vd1_isr(struct isp_ccdc_device *ccdc) | |
1572 | { | |
1573 | unsigned long flags; | |
1574 | ||
1575 | spin_lock_irqsave(&ccdc->lsc.req_lock, flags); | |
1576 | ||
1577 | /* | |
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). | |
1586 | */ | |
1587 | switch (ccdc->state) { | |
1588 | case ISP_PIPELINE_STREAM_SINGLESHOT: | |
1589 | ccdc->stopping = CCDC_STOP_REQUEST; | |
1590 | break; | |
1591 | ||
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); | |
1597 | } | |
1598 | break; | |
1599 | ||
1600 | case ISP_PIPELINE_STREAM_STOPPED: | |
1601 | break; | |
1602 | } | |
1603 | ||
1604 | if (__ccdc_handle_stopping(ccdc, CCDC_EVENT_VD1)) | |
1605 | goto done; | |
1606 | ||
1607 | if (ccdc->lsc.request == NULL) | |
1608 | goto done; | |
1609 | ||
1610 | /* | |
1611 | * LSC need to be reconfigured. Stop it here and on next LSC_DONE IRQ | |
1612 | * do the appropriate changes in registers | |
1613 | */ | |
1614 | if (ccdc->lsc.state == LSC_STATE_RUNNING) { | |
1615 | __ccdc_lsc_enable(ccdc, 0); | |
1616 | ccdc->lsc.state = LSC_STATE_RECONFIG; | |
1617 | goto done; | |
1618 | } | |
1619 | ||
1620 | /* LSC has been in STOPPED state, enable it */ | |
1621 | if (ccdc->lsc.state == LSC_STATE_STOPPED) | |
1622 | ccdc_lsc_enable(ccdc); | |
1623 | ||
1624 | done: | |
1625 | spin_unlock_irqrestore(&ccdc->lsc.req_lock, flags); | |
1626 | } | |
1627 | ||
1628 | /* | |
1629 | * omap3isp_ccdc_isr - Configure CCDC during interframe time. | |
1630 | * @ccdc: Pointer to ISP CCDC device. | |
1631 | * @events: CCDC events | |
1632 | */ | |
1633 | int omap3isp_ccdc_isr(struct isp_ccdc_device *ccdc, u32 events) | |
1634 | { | |
1635 | if (ccdc->state == ISP_PIPELINE_STREAM_STOPPED) | |
1636 | return 0; | |
1637 | ||
1638 | if (events & IRQ0STATUS_CCDC_VD1_IRQ) | |
1639 | ccdc_vd1_isr(ccdc); | |
1640 | ||
1641 | ccdc_lsc_isr(ccdc, events); | |
1642 | ||
1643 | if (events & IRQ0STATUS_CCDC_VD0_IRQ) | |
1644 | ccdc_vd0_isr(ccdc); | |
1645 | ||
1646 | if (events & IRQ0STATUS_HS_VS_IRQ) | |
1647 | ccdc_hs_vs_isr(ccdc); | |
1648 | ||
1649 | return 0; | |
1650 | } | |
1651 | ||
1652 | /* ----------------------------------------------------------------------------- | |
1653 | * ISP video operations | |
1654 | */ | |
1655 | ||
1656 | static int ccdc_video_queue(struct isp_video *video, struct isp_buffer *buffer) | |
1657 | { | |
1658 | struct isp_ccdc_device *ccdc = &video->isp->isp_ccdc; | |
1659 | ||
1660 | if (!(ccdc->output & CCDC_OUTPUT_MEMORY)) | |
1661 | return -ENODEV; | |
1662 | ||
1663 | ccdc_set_outaddr(ccdc, buffer->isp_addr); | |
1664 | ||
2d4e9d1d | 1665 | /* We now have a buffer queued on the output, restart the pipeline |
de1135d4 LP |
1666 | * on the next CCDC interrupt if running in continuous mode (or when |
1667 | * starting the stream). | |
1668 | */ | |
1669 | ccdc->underrun = 1; | |
1670 | ||
1671 | return 0; | |
1672 | } | |
1673 | ||
1674 | static const struct isp_video_operations ccdc_video_ops = { | |
1675 | .queue = ccdc_video_queue, | |
1676 | }; | |
1677 | ||
1678 | /* ----------------------------------------------------------------------------- | |
1679 | * V4L2 subdev operations | |
1680 | */ | |
1681 | ||
1682 | /* | |
1683 | * ccdc_ioctl - CCDC module private ioctl's | |
1684 | * @sd: ISP CCDC V4L2 subdevice | |
1685 | * @cmd: ioctl command | |
1686 | * @arg: ioctl argument | |
1687 | * | |
1688 | * Return 0 on success or a negative error code otherwise. | |
1689 | */ | |
1690 | static long ccdc_ioctl(struct v4l2_subdev *sd, unsigned int cmd, void *arg) | |
1691 | { | |
1692 | struct isp_ccdc_device *ccdc = v4l2_get_subdevdata(sd); | |
1693 | int ret; | |
1694 | ||
1695 | switch (cmd) { | |
1696 | case VIDIOC_OMAP3ISP_CCDC_CFG: | |
1697 | mutex_lock(&ccdc->ioctl_lock); | |
1698 | ret = ccdc_config(ccdc, arg); | |
1699 | mutex_unlock(&ccdc->ioctl_lock); | |
1700 | break; | |
1701 | ||
1702 | default: | |
1703 | return -ENOIOCTLCMD; | |
1704 | } | |
1705 | ||
1706 | return ret; | |
1707 | } | |
1708 | ||
1709 | static int ccdc_subscribe_event(struct v4l2_subdev *sd, struct v4l2_fh *fh, | |
55c85046 | 1710 | struct v4l2_event_subscription *sub) |
de1135d4 | 1711 | { |
69d232ae SA |
1712 | if (sub->type != V4L2_EVENT_FRAME_SYNC) |
1713 | return -EINVAL; | |
1714 | ||
1715 | /* line number is zero at frame start */ | |
1716 | if (sub->id != 0) | |
de1135d4 LP |
1717 | return -EINVAL; |
1718 | ||
c53c2549 | 1719 | return v4l2_event_subscribe(fh, sub, OMAP3ISP_CCDC_NEVENTS, NULL); |
de1135d4 LP |
1720 | } |
1721 | ||
1722 | static int ccdc_unsubscribe_event(struct v4l2_subdev *sd, struct v4l2_fh *fh, | |
55c85046 | 1723 | struct v4l2_event_subscription *sub) |
de1135d4 LP |
1724 | { |
1725 | return v4l2_event_unsubscribe(fh, sub); | |
1726 | } | |
1727 | ||
1728 | /* | |
1729 | * ccdc_set_stream - Enable/Disable streaming on the CCDC module | |
1730 | * @sd: ISP CCDC V4L2 subdevice | |
1731 | * @enable: Enable/disable stream | |
1732 | * | |
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(). | |
1737 | * | |
1738 | * When not writing to memory enable the CCDC immediately. | |
1739 | */ | |
1740 | static int ccdc_set_stream(struct v4l2_subdev *sd, int enable) | |
1741 | { | |
1742 | struct isp_ccdc_device *ccdc = v4l2_get_subdevdata(sd); | |
1743 | struct isp_device *isp = to_isp_device(ccdc); | |
1744 | int ret = 0; | |
1745 | ||
1746 | if (ccdc->state == ISP_PIPELINE_STREAM_STOPPED) { | |
1747 | if (enable == ISP_PIPELINE_STREAM_STOPPED) | |
1748 | return 0; | |
1749 | ||
1750 | omap3isp_subclk_enable(isp, OMAP3_ISP_SUBCLK_CCDC); | |
1751 | isp_reg_set(isp, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_CFG, | |
1752 | ISPCCDC_CFG_VDLC); | |
1753 | ||
1754 | ccdc_configure(ccdc); | |
1755 | ||
1756 | /* TODO: Don't configure the video port if all of its output | |
1757 | * links are inactive. | |
1758 | */ | |
1759 | ccdc_config_vp(ccdc); | |
1760 | ccdc_enable_vp(ccdc, 1); | |
de1135d4 LP |
1761 | ccdc_print_status(ccdc); |
1762 | } | |
1763 | ||
1764 | switch (enable) { | |
1765 | case ISP_PIPELINE_STREAM_CONTINUOUS: | |
1766 | if (ccdc->output & CCDC_OUTPUT_MEMORY) | |
1767 | omap3isp_sbl_enable(isp, OMAP3_ISP_SBL_CCDC_WRITE); | |
1768 | ||
1769 | if (ccdc->underrun || !(ccdc->output & CCDC_OUTPUT_MEMORY)) | |
1770 | ccdc_enable(ccdc); | |
1771 | ||
1772 | ccdc->underrun = 0; | |
1773 | break; | |
1774 | ||
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); | |
1779 | ||
1780 | ccdc_enable(ccdc); | |
1781 | break; | |
1782 | ||
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); | |
1788 | ccdc->underrun = 0; | |
1789 | break; | |
1790 | } | |
1791 | ||
1792 | ccdc->state = enable; | |
1793 | return ret; | |
1794 | } | |
1795 | ||
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) | |
1799 | { | |
1800 | if (which == V4L2_SUBDEV_FORMAT_TRY) | |
1801 | return v4l2_subdev_get_try_format(fh, pad); | |
1802 | else | |
1803 | return &ccdc->formats[pad]; | |
1804 | } | |
1805 | ||
a64909b8 LP |
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) | |
1809 | { | |
1810 | if (which == V4L2_SUBDEV_FORMAT_TRY) | |
1811 | return v4l2_subdev_get_try_crop(fh, CCDC_PAD_SOURCE_OF); | |
1812 | else | |
1813 | return &ccdc->crop; | |
1814 | } | |
1815 | ||
de1135d4 LP |
1816 | /* |
1817 | * ccdc_try_format - Try video format on a pad | |
1818 | * @ccdc: ISP CCDC device | |
1819 | * @fh : V4L2 subdev file handle | |
1820 | * @pad: Pad number | |
1821 | * @fmt: Format | |
1822 | */ | |
1823 | static void | |
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) | |
1827 | { | |
de1135d4 | 1828 | const struct isp_format_info *info; |
c51364ca | 1829 | enum v4l2_mbus_pixelcode pixelcode; |
de1135d4 LP |
1830 | unsigned int width = fmt->width; |
1831 | unsigned int height = fmt->height; | |
a64909b8 | 1832 | struct v4l2_rect *crop; |
de1135d4 LP |
1833 | unsigned int i; |
1834 | ||
1835 | switch (pad) { | |
1836 | case CCDC_PAD_SINK: | |
de1135d4 LP |
1837 | for (i = 0; i < ARRAY_SIZE(ccdc_fmts); i++) { |
1838 | if (fmt->code == ccdc_fmts[i]) | |
1839 | break; | |
1840 | } | |
1841 | ||
1842 | /* If not found, use SGRBG10 as default */ | |
1843 | if (i >= ARRAY_SIZE(ccdc_fmts)) | |
1844 | fmt->code = V4L2_MBUS_FMT_SGRBG10_1X10; | |
1845 | ||
1846 | /* Clamp the input size. */ | |
1847 | fmt->width = clamp_t(u32, width, 32, 4096); | |
1848 | fmt->height = clamp_t(u32, height, 32, 4096); | |
1849 | break; | |
1850 | ||
1851 | case CCDC_PAD_SOURCE_OF: | |
c51364ca LP |
1852 | pixelcode = fmt->code; |
1853 | *fmt = *__ccdc_get_format(ccdc, fh, CCDC_PAD_SINK, which); | |
1854 | ||
1855 | /* YUV formats are converted from 2X8 to 1X16 by the bridge and | |
1856 | * can be byte-swapped. | |
1857 | */ | |
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; | |
1866 | ||
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; | |
1871 | } | |
de1135d4 | 1872 | |
a64909b8 LP |
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; | |
de1135d4 LP |
1877 | break; |
1878 | ||
1879 | case CCDC_PAD_SOURCE_VP: | |
c51364ca | 1880 | *fmt = *__ccdc_get_format(ccdc, fh, CCDC_PAD_SINK, which); |
de1135d4 LP |
1881 | |
1882 | /* The video port interface truncates the data to 10 bits. */ | |
1883 | info = omap3isp_video_format_info(fmt->code); | |
1884 | fmt->code = info->truncated; | |
1885 | ||
c51364ca LP |
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) | |
1889 | fmt->code = 0; | |
1890 | ||
de1135d4 LP |
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 | |
1893 | * of input lines. | |
1894 | */ | |
1895 | fmt->width = clamp_t(u32, width, 32, fmt->width); | |
1896 | fmt->height = clamp_t(u32, height, 32, fmt->height - 1); | |
1897 | break; | |
1898 | } | |
1899 | ||
1900 | /* Data is written to memory unpacked, each 10-bit or 12-bit pixel is | |
1901 | * stored on 2 bytes. | |
1902 | */ | |
1903 | fmt->colorspace = V4L2_COLORSPACE_SRGB; | |
1904 | fmt->field = V4L2_FIELD_NONE; | |
1905 | } | |
1906 | ||
a64909b8 LP |
1907 | /* |
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 | |
1912 | */ | |
1913 | static void ccdc_try_crop(struct isp_ccdc_device *ccdc, | |
1914 | const struct v4l2_mbus_framefmt *sink, | |
1915 | struct v4l2_rect *crop) | |
1916 | { | |
1917 | const struct isp_format_info *info; | |
1918 | unsigned int max_width; | |
1919 | ||
1920 | /* For Bayer formats, restrict left/top and width/height to even values | |
1921 | * to keep the Bayer pattern. | |
1922 | */ | |
1923 | info = omap3isp_video_format_info(sink->code); | |
1924 | if (info->flavor != V4L2_MBUS_FMT_Y8_1X8) { | |
1925 | crop->left &= ~1; | |
1926 | crop->top &= ~1; | |
1927 | } | |
1928 | ||
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); | |
1931 | ||
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 | |
1935 | * of 16. | |
1936 | */ | |
1937 | max_width = (sink->width - crop->left + 15) & ~15; | |
1938 | crop->width = clamp_t(u32, crop->width, CCDC_MIN_WIDTH, max_width) | |
1939 | & ~15; | |
1940 | crop->height = clamp_t(u32, crop->height, CCDC_MIN_HEIGHT, | |
1941 | sink->height - crop->top); | |
1942 | ||
1943 | /* Odd width/height values don't make sense for Bayer formats. */ | |
1944 | if (info->flavor != V4L2_MBUS_FMT_Y8_1X8) { | |
1945 | crop->width &= ~1; | |
1946 | crop->height &= ~1; | |
1947 | } | |
1948 | } | |
1949 | ||
de1135d4 LP |
1950 | /* |
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 | |
1956 | */ | |
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) | |
1960 | { | |
1961 | struct isp_ccdc_device *ccdc = v4l2_get_subdevdata(sd); | |
1962 | struct v4l2_mbus_framefmt *format; | |
1963 | ||
1964 | switch (code->pad) { | |
1965 | case CCDC_PAD_SINK: | |
1966 | if (code->index >= ARRAY_SIZE(ccdc_fmts)) | |
1967 | return -EINVAL; | |
1968 | ||
1969 | code->code = ccdc_fmts[code->index]; | |
1970 | break; | |
1971 | ||
1972 | case CCDC_PAD_SOURCE_OF: | |
c51364ca LP |
1973 | format = __ccdc_get_format(ccdc, fh, code->pad, |
1974 | V4L2_SUBDEV_FORMAT_TRY); | |
1975 | ||
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; | |
1983 | else | |
1984 | return -EINVAL; | |
1985 | } else { | |
1986 | /* In raw mode, no configurable format confversion is | |
1987 | * available. | |
1988 | */ | |
1989 | if (code->index == 0) | |
1990 | code->code = format->code; | |
1991 | else | |
1992 | return -EINVAL; | |
1993 | } | |
1994 | break; | |
1995 | ||
de1135d4 | 1996 | case CCDC_PAD_SOURCE_VP: |
c51364ca LP |
1997 | /* The CCDC supports no configurable format conversion |
1998 | * compatible with the video port. Enumerate a single output | |
1999 | * format code. | |
2000 | */ | |
de1135d4 LP |
2001 | if (code->index != 0) |
2002 | return -EINVAL; | |
2003 | ||
c51364ca | 2004 | format = __ccdc_get_format(ccdc, fh, code->pad, |
de1135d4 LP |
2005 | V4L2_SUBDEV_FORMAT_TRY); |
2006 | ||
c51364ca LP |
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. | |
2009 | */ | |
2010 | if (format->code == 0) | |
2011 | return -EINVAL; | |
2012 | ||
de1135d4 LP |
2013 | code->code = format->code; |
2014 | break; | |
2015 | ||
2016 | default: | |
2017 | return -EINVAL; | |
2018 | } | |
2019 | ||
2020 | return 0; | |
2021 | } | |
2022 | ||
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) | |
2026 | { | |
2027 | struct isp_ccdc_device *ccdc = v4l2_get_subdevdata(sd); | |
2028 | struct v4l2_mbus_framefmt format; | |
2029 | ||
2030 | if (fse->index != 0) | |
2031 | return -EINVAL; | |
2032 | ||
2033 | format.code = fse->code; | |
2034 | format.width = 1; | |
2035 | format.height = 1; | |
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; | |
2039 | ||
2040 | if (format.code != fse->code) | |
2041 | return -EINVAL; | |
2042 | ||
2043 | format.code = fse->code; | |
2044 | format.width = -1; | |
2045 | format.height = -1; | |
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; | |
2049 | ||
2050 | return 0; | |
2051 | } | |
2052 | ||
a64909b8 LP |
2053 | /* |
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 | |
2058 | * | |
2059 | * The only supported rectangles are the crop rectangles on the output formatter | |
2060 | * source pad. | |
2061 | * | |
2062 | * Return 0 on success or a negative error code otherwise. | |
2063 | */ | |
2064 | static int ccdc_get_selection(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh, | |
2065 | struct v4l2_subdev_selection *sel) | |
2066 | { | |
2067 | struct isp_ccdc_device *ccdc = v4l2_get_subdevdata(sd); | |
2068 | struct v4l2_mbus_framefmt *format; | |
2069 | ||
2070 | if (sel->pad != CCDC_PAD_SOURCE_OF) | |
2071 | return -EINVAL; | |
2072 | ||
2073 | switch (sel->target) { | |
5689b288 | 2074 | case V4L2_SEL_TGT_CROP_BOUNDS: |
a64909b8 LP |
2075 | sel->r.left = 0; |
2076 | sel->r.top = 0; | |
2077 | sel->r.width = INT_MAX; | |
2078 | sel->r.height = INT_MAX; | |
2079 | ||
2080 | format = __ccdc_get_format(ccdc, fh, CCDC_PAD_SINK, sel->which); | |
2081 | ccdc_try_crop(ccdc, format, &sel->r); | |
2082 | break; | |
2083 | ||
5689b288 | 2084 | case V4L2_SEL_TGT_CROP: |
a64909b8 LP |
2085 | sel->r = *__ccdc_get_crop(ccdc, fh, sel->which); |
2086 | break; | |
2087 | ||
2088 | default: | |
2089 | return -EINVAL; | |
2090 | } | |
2091 | ||
2092 | return 0; | |
2093 | } | |
2094 | ||
2095 | /* | |
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 | |
2100 | * | |
2101 | * The only supported rectangle is the actual crop rectangle on the output | |
2102 | * formatter source pad. | |
2103 | * | |
2104 | * Return 0 on success or a negative error code otherwise. | |
2105 | */ | |
2106 | static int ccdc_set_selection(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh, | |
2107 | struct v4l2_subdev_selection *sel) | |
2108 | { | |
2109 | struct isp_ccdc_device *ccdc = v4l2_get_subdevdata(sd); | |
2110 | struct v4l2_mbus_framefmt *format; | |
2111 | ||
5689b288 | 2112 | if (sel->target != V4L2_SEL_TGT_CROP || |
a64909b8 LP |
2113 | sel->pad != CCDC_PAD_SOURCE_OF) |
2114 | return -EINVAL; | |
2115 | ||
2116 | /* The crop rectangle can't be changed while streaming. */ | |
2117 | if (ccdc->state != ISP_PIPELINE_STREAM_STOPPED) | |
2118 | return -EBUSY; | |
2119 | ||
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 | |
2122 | * rectangle. | |
2123 | */ | |
563df3d0 | 2124 | if (sel->flags & V4L2_SEL_FLAG_KEEP_CONFIG) { |
a64909b8 LP |
2125 | sel->r = *__ccdc_get_crop(ccdc, fh, sel->which); |
2126 | return 0; | |
2127 | } | |
2128 | ||
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; | |
2132 | ||
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); | |
2136 | ||
2137 | return 0; | |
2138 | } | |
2139 | ||
de1135d4 LP |
2140 | /* |
2141 | * ccdc_get_format - Retrieve the video format on a pad | |
2142 | * @sd : ISP CCDC V4L2 subdevice | |
2143 | * @fh : V4L2 subdev file handle | |
2144 | * @fmt: Format | |
2145 | * | |
2146 | * Return 0 on success or -EINVAL if the pad is invalid or doesn't correspond | |
2147 | * to the format type. | |
2148 | */ | |
2149 | static int ccdc_get_format(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh, | |
2150 | struct v4l2_subdev_format *fmt) | |
2151 | { | |
2152 | struct isp_ccdc_device *ccdc = v4l2_get_subdevdata(sd); | |
2153 | struct v4l2_mbus_framefmt *format; | |
2154 | ||
2155 | format = __ccdc_get_format(ccdc, fh, fmt->pad, fmt->which); | |
2156 | if (format == NULL) | |
2157 | return -EINVAL; | |
2158 | ||
2159 | fmt->format = *format; | |
2160 | return 0; | |
2161 | } | |
2162 | ||
2163 | /* | |
2164 | * ccdc_set_format - Set the video format on a pad | |
2165 | * @sd : ISP CCDC V4L2 subdevice | |
2166 | * @fh : V4L2 subdev file handle | |
2167 | * @fmt: Format | |
2168 | * | |
2169 | * Return 0 on success or -EINVAL if the pad is invalid or doesn't correspond | |
2170 | * to the format type. | |
2171 | */ | |
2172 | static int ccdc_set_format(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh, | |
2173 | struct v4l2_subdev_format *fmt) | |
2174 | { | |
2175 | struct isp_ccdc_device *ccdc = v4l2_get_subdevdata(sd); | |
2176 | struct v4l2_mbus_framefmt *format; | |
a64909b8 | 2177 | struct v4l2_rect *crop; |
de1135d4 LP |
2178 | |
2179 | format = __ccdc_get_format(ccdc, fh, fmt->pad, fmt->which); | |
2180 | if (format == NULL) | |
2181 | return -EINVAL; | |
2182 | ||
2183 | ccdc_try_format(ccdc, fh, fmt->pad, &fmt->format, fmt->which); | |
2184 | *format = fmt->format; | |
2185 | ||
2186 | /* Propagate the format from sink to source */ | |
2187 | if (fmt->pad == CCDC_PAD_SINK) { | |
a64909b8 LP |
2188 | /* Reset the crop rectangle. */ |
2189 | crop = __ccdc_get_crop(ccdc, fh, fmt->which); | |
2190 | crop->left = 0; | |
2191 | crop->top = 0; | |
2192 | crop->width = fmt->format.width; | |
2193 | crop->height = fmt->format.height; | |
2194 | ||
2195 | ccdc_try_crop(ccdc, &fmt->format, crop); | |
2196 | ||
2197 | /* Update the source formats. */ | |
de1135d4 LP |
2198 | format = __ccdc_get_format(ccdc, fh, CCDC_PAD_SOURCE_OF, |
2199 | fmt->which); | |
2200 | *format = fmt->format; | |
2201 | ccdc_try_format(ccdc, fh, CCDC_PAD_SOURCE_OF, format, | |
2202 | fmt->which); | |
2203 | ||
2204 | format = __ccdc_get_format(ccdc, fh, CCDC_PAD_SOURCE_VP, | |
2205 | fmt->which); | |
2206 | *format = fmt->format; | |
2207 | ccdc_try_format(ccdc, fh, CCDC_PAD_SOURCE_VP, format, | |
2208 | fmt->which); | |
2209 | } | |
2210 | ||
2211 | return 0; | |
2212 | } | |
2213 | ||
a6d7a62d SA |
2214 | /* |
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] | |
2220 | * | |
2221 | * return true if the combination is possible | |
2222 | * return false otherwise | |
2223 | */ | |
2224 | static bool ccdc_is_shiftable(enum v4l2_mbus_pixelcode in, | |
2225 | enum v4l2_mbus_pixelcode out, | |
2226 | unsigned int additional_shift) | |
2227 | { | |
2228 | const struct isp_format_info *in_info, *out_info; | |
2229 | ||
2230 | if (in == out) | |
2231 | return true; | |
2232 | ||
2233 | in_info = omap3isp_video_format_info(in); | |
2234 | out_info = omap3isp_video_format_info(out); | |
2235 | ||
2236 | if ((in_info->flavor == 0) || (out_info->flavor == 0)) | |
2237 | return false; | |
2238 | ||
2239 | if (in_info->flavor != out_info->flavor) | |
2240 | return false; | |
2241 | ||
1697e49a | 2242 | return in_info->width - out_info->width + additional_shift <= 6; |
a6d7a62d SA |
2243 | } |
2244 | ||
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) | |
2249 | { | |
2250 | struct isp_ccdc_device *ccdc = v4l2_get_subdevdata(sd); | |
2251 | unsigned long parallel_shift; | |
2252 | ||
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) | |
2256 | return -EPIPE; | |
2257 | ||
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; | |
2265 | } else { | |
2266 | parallel_shift = 0; | |
2267 | } | |
2268 | ||
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)) | |
2272 | return -EPIPE; | |
2273 | ||
2274 | return 0; | |
2275 | } | |
2276 | ||
de1135d4 LP |
2277 | /* |
2278 | * ccdc_init_formats - Initialize formats on all pads | |
2279 | * @sd: ISP CCDC V4L2 subdevice | |
2280 | * @fh: V4L2 subdev file handle | |
2281 | * | |
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. | |
2285 | */ | |
2286 | static int ccdc_init_formats(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh) | |
2287 | { | |
2288 | struct v4l2_subdev_format format; | |
2289 | ||
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); | |
2297 | ||
2298 | return 0; | |
2299 | } | |
2300 | ||
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, | |
2306 | }; | |
2307 | ||
2308 | /* V4L2 subdev video operations */ | |
2309 | static const struct v4l2_subdev_video_ops ccdc_v4l2_video_ops = { | |
2310 | .s_stream = ccdc_set_stream, | |
2311 | }; | |
2312 | ||
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, | |
a64909b8 LP |
2319 | .get_selection = ccdc_get_selection, |
2320 | .set_selection = ccdc_set_selection, | |
a6d7a62d | 2321 | .link_validate = ccdc_link_validate, |
de1135d4 LP |
2322 | }; |
2323 | ||
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, | |
2329 | }; | |
2330 | ||
2331 | /* V4L2 subdev internal operations */ | |
2332 | static const struct v4l2_subdev_internal_ops ccdc_v4l2_internal_ops = { | |
2333 | .open = ccdc_init_formats, | |
2334 | }; | |
2335 | ||
2336 | /* ----------------------------------------------------------------------------- | |
2337 | * Media entity operations | |
2338 | */ | |
2339 | ||
2340 | /* | |
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 | |
2346 | * | |
2347 | * return -EINVAL or zero on success | |
2348 | */ | |
2349 | static int ccdc_link_setup(struct media_entity *entity, | |
2350 | const struct media_pad *local, | |
2351 | const struct media_pad *remote, u32 flags) | |
2352 | { | |
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); | |
2356 | ||
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 | |
2360 | * CSI2c. | |
2361 | */ | |
2362 | if (!(flags & MEDIA_LNK_FL_ENABLED)) { | |
2363 | ccdc->input = CCDC_INPUT_NONE; | |
2364 | break; | |
2365 | } | |
2366 | ||
2367 | if (ccdc->input != CCDC_INPUT_NONE) | |
2368 | return -EBUSY; | |
2369 | ||
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; | |
2376 | else | |
2377 | ccdc->input = CCDC_INPUT_PARALLEL; | |
2378 | ||
2379 | break; | |
2380 | ||
2381 | /* | |
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. | |
2384 | */ | |
2385 | ||
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. | |
2389 | */ | |
2390 | if (flags & MEDIA_LNK_FL_ENABLED) { | |
2391 | if (ccdc->output & ~CCDC_OUTPUT_PREVIEW) | |
2392 | return -EBUSY; | |
2393 | ccdc->output |= CCDC_OUTPUT_PREVIEW; | |
2394 | } else { | |
2395 | ccdc->output &= ~CCDC_OUTPUT_PREVIEW; | |
2396 | } | |
2397 | break; | |
2398 | ||
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) | |
2403 | return -EBUSY; | |
2404 | ccdc->output |= CCDC_OUTPUT_MEMORY; | |
2405 | } else { | |
2406 | ccdc->output &= ~CCDC_OUTPUT_MEMORY; | |
2407 | } | |
2408 | break; | |
2409 | ||
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) | |
2414 | return -EBUSY; | |
2415 | ccdc->output |= CCDC_OUTPUT_RESIZER; | |
2416 | } else { | |
2417 | ccdc->output &= ~CCDC_OUTPUT_RESIZER; | |
2418 | } | |
2419 | break; | |
2420 | ||
2421 | default: | |
2422 | return -EINVAL; | |
2423 | } | |
2424 | ||
2425 | return 0; | |
2426 | } | |
2427 | ||
2428 | /* media operations */ | |
2429 | static const struct media_entity_operations ccdc_media_ops = { | |
2430 | .link_setup = ccdc_link_setup, | |
a6d7a62d | 2431 | .link_validate = v4l2_subdev_link_validate, |
de1135d4 LP |
2432 | }; |
2433 | ||
39099d09 LP |
2434 | void omap3isp_ccdc_unregister_entities(struct isp_ccdc_device *ccdc) |
2435 | { | |
2436 | v4l2_device_unregister_subdev(&ccdc->subdev); | |
2437 | omap3isp_video_unregister(&ccdc->video_out); | |
2438 | } | |
2439 | ||
2440 | int omap3isp_ccdc_register_entities(struct isp_ccdc_device *ccdc, | |
2441 | struct v4l2_device *vdev) | |
2442 | { | |
2443 | int ret; | |
2444 | ||
2445 | /* Register the subdev and video node. */ | |
2446 | ret = v4l2_device_register_subdev(vdev, &ccdc->subdev); | |
2447 | if (ret < 0) | |
2448 | goto error; | |
2449 | ||
2450 | ret = omap3isp_video_register(&ccdc->video_out, vdev); | |
2451 | if (ret < 0) | |
2452 | goto error; | |
2453 | ||
2454 | return 0; | |
2455 | ||
2456 | error: | |
2457 | omap3isp_ccdc_unregister_entities(ccdc); | |
2458 | return ret; | |
2459 | } | |
2460 | ||
2461 | /* ----------------------------------------------------------------------------- | |
2462 | * ISP CCDC initialisation and cleanup | |
2463 | */ | |
2464 | ||
de1135d4 LP |
2465 | /* |
2466 | * ccdc_init_entities - Initialize V4L2 subdev and media entity | |
2467 | * @ccdc: ISP CCDC module | |
2468 | * | |
2469 | * Return 0 on success and a negative error code on failure. | |
2470 | */ | |
2471 | static int ccdc_init_entities(struct isp_ccdc_device *ccdc) | |
2472 | { | |
2473 | struct v4l2_subdev *sd = &ccdc->subdev; | |
2474 | struct media_pad *pads = ccdc->pads; | |
2475 | struct media_entity *me = &sd->entity; | |
2476 | int ret; | |
2477 | ||
2478 | ccdc->input = CCDC_INPUT_NONE; | |
2479 | ||
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; | |
de1135d4 LP |
2486 | |
2487 | pads[CCDC_PAD_SINK].flags = MEDIA_PAD_FL_SINK; | |
2488 | pads[CCDC_PAD_SOURCE_VP].flags = MEDIA_PAD_FL_SOURCE; | |
2489 | pads[CCDC_PAD_SOURCE_OF].flags = MEDIA_PAD_FL_SOURCE; | |
2490 | ||
2491 | me->ops = &ccdc_media_ops; | |
2492 | ret = media_entity_init(me, CCDC_PADS_NUM, pads, 0); | |
2493 | if (ret < 0) | |
2494 | return ret; | |
2495 | ||
2496 | ccdc_init_formats(sd, NULL); | |
2497 | ||
2498 | ccdc->video_out.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; | |
2499 | ccdc->video_out.ops = &ccdc_video_ops; | |
2500 | ccdc->video_out.isp = to_isp_device(ccdc); | |
2501 | ccdc->video_out.capture_mem = PAGE_ALIGN(4096 * 4096) * 3; | |
2502 | ccdc->video_out.bpl_alignment = 32; | |
2503 | ||
2504 | ret = omap3isp_video_init(&ccdc->video_out, "CCDC"); | |
2505 | if (ret < 0) | |
9b6390bd | 2506 | goto error_video; |
de1135d4 LP |
2507 | |
2508 | /* Connect the CCDC subdev to the video node. */ | |
2509 | ret = media_entity_create_link(&ccdc->subdev.entity, CCDC_PAD_SOURCE_OF, | |
2510 | &ccdc->video_out.video.entity, 0, 0); | |
2511 | if (ret < 0) | |
9b6390bd | 2512 | goto error_link; |
de1135d4 LP |
2513 | |
2514 | return 0; | |
9b6390bd LP |
2515 | |
2516 | error_link: | |
2517 | omap3isp_video_cleanup(&ccdc->video_out); | |
2518 | error_video: | |
2519 | media_entity_cleanup(me); | |
2520 | return ret; | |
de1135d4 LP |
2521 | } |
2522 | ||
de1135d4 LP |
2523 | /* |
2524 | * omap3isp_ccdc_init - CCDC module initialization. | |
2525 | * @dev: Device pointer specific to the OMAP3 ISP. | |
2526 | * | |
2527 | * TODO: Get the initialisation values from platform data. | |
2528 | * | |
2529 | * Return 0 on success or a negative error code otherwise. | |
2530 | */ | |
2531 | int omap3isp_ccdc_init(struct isp_device *isp) | |
2532 | { | |
2533 | struct isp_ccdc_device *ccdc = &isp->isp_ccdc; | |
9b6390bd | 2534 | int ret; |
de1135d4 LP |
2535 | |
2536 | spin_lock_init(&ccdc->lock); | |
2537 | init_waitqueue_head(&ccdc->wait); | |
2538 | mutex_init(&ccdc->ioctl_lock); | |
2539 | ||
2540 | ccdc->stopping = CCDC_STOP_NOT_REQUESTED; | |
2541 | ||
2542 | INIT_WORK(&ccdc->lsc.table_work, ccdc_lsc_free_table_work); | |
2543 | ccdc->lsc.state = LSC_STATE_STOPPED; | |
2544 | INIT_LIST_HEAD(&ccdc->lsc.free_queue); | |
2545 | spin_lock_init(&ccdc->lsc.req_lock); | |
2546 | ||
de1135d4 LP |
2547 | ccdc->clamp.oblen = 0; |
2548 | ccdc->clamp.dcsubval = 0; | |
2549 | ||
de1135d4 LP |
2550 | ccdc->update = OMAP3ISP_CCDC_BLCLAMP; |
2551 | ccdc_apply_controls(ccdc); | |
2552 | ||
9b6390bd LP |
2553 | ret = ccdc_init_entities(ccdc); |
2554 | if (ret < 0) { | |
2555 | mutex_destroy(&ccdc->ioctl_lock); | |
2556 | return ret; | |
2557 | } | |
2558 | ||
2559 | return 0; | |
de1135d4 LP |
2560 | } |
2561 | ||
2562 | /* | |
2563 | * omap3isp_ccdc_cleanup - CCDC module cleanup. | |
2564 | * @dev: Device pointer specific to the OMAP3 ISP. | |
2565 | */ | |
2566 | void omap3isp_ccdc_cleanup(struct isp_device *isp) | |
2567 | { | |
2568 | struct isp_ccdc_device *ccdc = &isp->isp_ccdc; | |
2569 | ||
63b4ca23 LP |
2570 | omap3isp_video_cleanup(&ccdc->video_out); |
2571 | media_entity_cleanup(&ccdc->subdev.entity); | |
2572 | ||
de1135d4 LP |
2573 | /* Free LSC requests. As the CCDC is stopped there's no active request, |
2574 | * so only the pending request and the free queue need to be handled. | |
2575 | */ | |
2576 | ccdc_lsc_free_request(ccdc, ccdc->lsc.request); | |
2577 | cancel_work_sync(&ccdc->lsc.table_work); | |
2578 | ccdc_lsc_free_queue(ccdc, &ccdc->lsc.free_queue); | |
2579 | ||
2580 | if (ccdc->fpc.fpcaddr != 0) | |
fabdbca8 | 2581 | omap_iommu_vfree(isp->domain, isp->dev, ccdc->fpc.fpcaddr); |
ed33ac8e LP |
2582 | |
2583 | mutex_destroy(&ccdc->ioctl_lock); | |
de1135d4 | 2584 | } |