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. | |
de1135d4 LP |
15 | */ |
16 | ||
17 | #include <linux/module.h> | |
18 | #include <linux/uaccess.h> | |
19 | #include <linux/delay.h> | |
20 | #include <linux/device.h> | |
21 | #include <linux/dma-mapping.h> | |
22 | #include <linux/mm.h> | |
23 | #include <linux/sched.h> | |
e74d83aa | 24 | #include <linux/slab.h> |
de1135d4 LP |
25 | #include <media/v4l2-event.h> |
26 | ||
27 | #include "isp.h" | |
28 | #include "ispreg.h" | |
29 | #include "ispccdc.h" | |
30 | ||
a64909b8 LP |
31 | #define CCDC_MIN_WIDTH 32 |
32 | #define CCDC_MIN_HEIGHT 32 | |
33 | ||
de1135d4 LP |
34 | static struct v4l2_mbus_framefmt * |
35 | __ccdc_get_format(struct isp_ccdc_device *ccdc, struct v4l2_subdev_fh *fh, | |
36 | unsigned int pad, enum v4l2_subdev_format_whence which); | |
37 | ||
38 | static const unsigned int ccdc_fmts[] = { | |
39 | V4L2_MBUS_FMT_Y8_1X8, | |
5782f97b MJ |
40 | V4L2_MBUS_FMT_Y10_1X10, |
41 | V4L2_MBUS_FMT_Y12_1X12, | |
42 | V4L2_MBUS_FMT_SGRBG8_1X8, | |
43 | V4L2_MBUS_FMT_SRGGB8_1X8, | |
44 | V4L2_MBUS_FMT_SBGGR8_1X8, | |
45 | V4L2_MBUS_FMT_SGBRG8_1X8, | |
de1135d4 LP |
46 | V4L2_MBUS_FMT_SGRBG10_1X10, |
47 | V4L2_MBUS_FMT_SRGGB10_1X10, | |
48 | V4L2_MBUS_FMT_SBGGR10_1X10, | |
49 | V4L2_MBUS_FMT_SGBRG10_1X10, | |
50 | V4L2_MBUS_FMT_SGRBG12_1X12, | |
51 | V4L2_MBUS_FMT_SRGGB12_1X12, | |
52 | V4L2_MBUS_FMT_SBGGR12_1X12, | |
53 | V4L2_MBUS_FMT_SGBRG12_1X12, | |
c51364ca LP |
54 | V4L2_MBUS_FMT_YUYV8_2X8, |
55 | V4L2_MBUS_FMT_UYVY8_2X8, | |
de1135d4 LP |
56 | }; |
57 | ||
58 | /* | |
59 | * ccdc_print_status - Print current CCDC Module register values. | |
60 | * @ccdc: Pointer to ISP CCDC device. | |
61 | * | |
62 | * Also prints other debug information stored in the CCDC module. | |
63 | */ | |
64 | #define CCDC_PRINT_REGISTER(isp, name)\ | |
65 | dev_dbg(isp->dev, "###CCDC " #name "=0x%08x\n", \ | |
66 | isp_reg_readl(isp, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_##name)) | |
67 | ||
68 | static void ccdc_print_status(struct isp_ccdc_device *ccdc) | |
69 | { | |
70 | struct isp_device *isp = to_isp_device(ccdc); | |
71 | ||
72 | dev_dbg(isp->dev, "-------------CCDC Register dump-------------\n"); | |
73 | ||
74 | CCDC_PRINT_REGISTER(isp, PCR); | |
75 | CCDC_PRINT_REGISTER(isp, SYN_MODE); | |
76 | CCDC_PRINT_REGISTER(isp, HD_VD_WID); | |
77 | CCDC_PRINT_REGISTER(isp, PIX_LINES); | |
78 | CCDC_PRINT_REGISTER(isp, HORZ_INFO); | |
79 | CCDC_PRINT_REGISTER(isp, VERT_START); | |
80 | CCDC_PRINT_REGISTER(isp, VERT_LINES); | |
81 | CCDC_PRINT_REGISTER(isp, CULLING); | |
82 | CCDC_PRINT_REGISTER(isp, HSIZE_OFF); | |
83 | CCDC_PRINT_REGISTER(isp, SDOFST); | |
84 | CCDC_PRINT_REGISTER(isp, SDR_ADDR); | |
85 | CCDC_PRINT_REGISTER(isp, CLAMP); | |
86 | CCDC_PRINT_REGISTER(isp, DCSUB); | |
87 | CCDC_PRINT_REGISTER(isp, COLPTN); | |
88 | CCDC_PRINT_REGISTER(isp, BLKCMP); | |
89 | CCDC_PRINT_REGISTER(isp, FPC); | |
90 | CCDC_PRINT_REGISTER(isp, FPC_ADDR); | |
91 | CCDC_PRINT_REGISTER(isp, VDINT); | |
92 | CCDC_PRINT_REGISTER(isp, ALAW); | |
93 | CCDC_PRINT_REGISTER(isp, REC656IF); | |
94 | CCDC_PRINT_REGISTER(isp, CFG); | |
95 | CCDC_PRINT_REGISTER(isp, FMTCFG); | |
96 | CCDC_PRINT_REGISTER(isp, FMT_HORZ); | |
97 | CCDC_PRINT_REGISTER(isp, FMT_VERT); | |
98 | CCDC_PRINT_REGISTER(isp, PRGEVEN0); | |
99 | CCDC_PRINT_REGISTER(isp, PRGEVEN1); | |
100 | CCDC_PRINT_REGISTER(isp, PRGODD0); | |
101 | CCDC_PRINT_REGISTER(isp, PRGODD1); | |
102 | CCDC_PRINT_REGISTER(isp, VP_OUT); | |
103 | CCDC_PRINT_REGISTER(isp, LSC_CONFIG); | |
104 | CCDC_PRINT_REGISTER(isp, LSC_INITIAL); | |
105 | CCDC_PRINT_REGISTER(isp, LSC_TABLE_BASE); | |
106 | CCDC_PRINT_REGISTER(isp, LSC_TABLE_OFFSET); | |
107 | ||
108 | dev_dbg(isp->dev, "--------------------------------------------\n"); | |
109 | } | |
110 | ||
111 | /* | |
112 | * omap3isp_ccdc_busy - Get busy state of the CCDC. | |
113 | * @ccdc: Pointer to ISP CCDC device. | |
114 | */ | |
115 | int omap3isp_ccdc_busy(struct isp_ccdc_device *ccdc) | |
116 | { | |
117 | struct isp_device *isp = to_isp_device(ccdc); | |
118 | ||
119 | return isp_reg_readl(isp, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_PCR) & | |
120 | ISPCCDC_PCR_BUSY; | |
121 | } | |
122 | ||
123 | /* ----------------------------------------------------------------------------- | |
124 | * Lens Shading Compensation | |
125 | */ | |
126 | ||
127 | /* | |
128 | * ccdc_lsc_validate_config - Check that LSC configuration is valid. | |
129 | * @ccdc: Pointer to ISP CCDC device. | |
130 | * @lsc_cfg: the LSC configuration to check. | |
131 | * | |
132 | * Returns 0 if the LSC configuration is valid, or -EINVAL if invalid. | |
133 | */ | |
134 | static int ccdc_lsc_validate_config(struct isp_ccdc_device *ccdc, | |
135 | struct omap3isp_ccdc_lsc_config *lsc_cfg) | |
136 | { | |
137 | struct isp_device *isp = to_isp_device(ccdc); | |
138 | struct v4l2_mbus_framefmt *format; | |
139 | unsigned int paxel_width, paxel_height; | |
140 | unsigned int paxel_shift_x, paxel_shift_y; | |
141 | unsigned int min_width, min_height, min_size; | |
142 | unsigned int input_width, input_height; | |
143 | ||
144 | paxel_shift_x = lsc_cfg->gain_mode_m; | |
145 | paxel_shift_y = lsc_cfg->gain_mode_n; | |
146 | ||
147 | if ((paxel_shift_x < 2) || (paxel_shift_x > 6) || | |
148 | (paxel_shift_y < 2) || (paxel_shift_y > 6)) { | |
149 | dev_dbg(isp->dev, "CCDC: LSC: Invalid paxel size\n"); | |
150 | return -EINVAL; | |
151 | } | |
152 | ||
153 | if (lsc_cfg->offset & 3) { | |
154 | dev_dbg(isp->dev, "CCDC: LSC: Offset must be a multiple of " | |
155 | "4\n"); | |
156 | return -EINVAL; | |
157 | } | |
158 | ||
159 | if ((lsc_cfg->initial_x & 1) || (lsc_cfg->initial_y & 1)) { | |
160 | dev_dbg(isp->dev, "CCDC: LSC: initial_x and y must be even\n"); | |
161 | return -EINVAL; | |
162 | } | |
163 | ||
164 | format = __ccdc_get_format(ccdc, NULL, CCDC_PAD_SINK, | |
165 | V4L2_SUBDEV_FORMAT_ACTIVE); | |
166 | input_width = format->width; | |
167 | input_height = format->height; | |
168 | ||
169 | /* Calculate minimum bytesize for validation */ | |
170 | paxel_width = 1 << paxel_shift_x; | |
171 | min_width = ((input_width + lsc_cfg->initial_x + paxel_width - 1) | |
172 | >> paxel_shift_x) + 1; | |
173 | ||
174 | paxel_height = 1 << paxel_shift_y; | |
175 | min_height = ((input_height + lsc_cfg->initial_y + paxel_height - 1) | |
176 | >> paxel_shift_y) + 1; | |
177 | ||
178 | min_size = 4 * min_width * min_height; | |
179 | if (min_size > lsc_cfg->size) { | |
180 | dev_dbg(isp->dev, "CCDC: LSC: too small table\n"); | |
181 | return -EINVAL; | |
182 | } | |
183 | if (lsc_cfg->offset < (min_width * 4)) { | |
184 | dev_dbg(isp->dev, "CCDC: LSC: Offset is too small\n"); | |
185 | return -EINVAL; | |
186 | } | |
187 | if ((lsc_cfg->size / lsc_cfg->offset) < min_height) { | |
188 | dev_dbg(isp->dev, "CCDC: LSC: Wrong size/offset combination\n"); | |
189 | return -EINVAL; | |
190 | } | |
191 | return 0; | |
192 | } | |
193 | ||
194 | /* | |
195 | * ccdc_lsc_program_table - Program Lens Shading Compensation table address. | |
196 | * @ccdc: Pointer to ISP CCDC device. | |
197 | */ | |
d33186d0 LP |
198 | static void ccdc_lsc_program_table(struct isp_ccdc_device *ccdc, |
199 | dma_addr_t addr) | |
de1135d4 LP |
200 | { |
201 | isp_reg_writel(to_isp_device(ccdc), addr, | |
202 | OMAP3_ISP_IOMEM_CCDC, ISPCCDC_LSC_TABLE_BASE); | |
203 | } | |
204 | ||
205 | /* | |
206 | * ccdc_lsc_setup_regs - Configures the lens shading compensation module | |
207 | * @ccdc: Pointer to ISP CCDC device. | |
208 | */ | |
209 | static void ccdc_lsc_setup_regs(struct isp_ccdc_device *ccdc, | |
210 | struct omap3isp_ccdc_lsc_config *cfg) | |
211 | { | |
212 | struct isp_device *isp = to_isp_device(ccdc); | |
213 | int reg; | |
214 | ||
215 | isp_reg_writel(isp, cfg->offset, OMAP3_ISP_IOMEM_CCDC, | |
216 | ISPCCDC_LSC_TABLE_OFFSET); | |
217 | ||
218 | reg = 0; | |
219 | reg |= cfg->gain_mode_n << ISPCCDC_LSC_GAIN_MODE_N_SHIFT; | |
220 | reg |= cfg->gain_mode_m << ISPCCDC_LSC_GAIN_MODE_M_SHIFT; | |
221 | reg |= cfg->gain_format << ISPCCDC_LSC_GAIN_FORMAT_SHIFT; | |
222 | isp_reg_writel(isp, reg, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_LSC_CONFIG); | |
223 | ||
224 | reg = 0; | |
225 | reg &= ~ISPCCDC_LSC_INITIAL_X_MASK; | |
226 | reg |= cfg->initial_x << ISPCCDC_LSC_INITIAL_X_SHIFT; | |
227 | reg &= ~ISPCCDC_LSC_INITIAL_Y_MASK; | |
228 | reg |= cfg->initial_y << ISPCCDC_LSC_INITIAL_Y_SHIFT; | |
229 | isp_reg_writel(isp, reg, OMAP3_ISP_IOMEM_CCDC, | |
230 | ISPCCDC_LSC_INITIAL); | |
231 | } | |
232 | ||
233 | static int ccdc_lsc_wait_prefetch(struct isp_ccdc_device *ccdc) | |
234 | { | |
235 | struct isp_device *isp = to_isp_device(ccdc); | |
236 | unsigned int wait; | |
237 | ||
238 | isp_reg_writel(isp, IRQ0STATUS_CCDC_LSC_PREF_COMP_IRQ, | |
239 | OMAP3_ISP_IOMEM_MAIN, ISP_IRQ0STATUS); | |
240 | ||
241 | /* timeout 1 ms */ | |
242 | for (wait = 0; wait < 1000; wait++) { | |
243 | if (isp_reg_readl(isp, OMAP3_ISP_IOMEM_MAIN, ISP_IRQ0STATUS) & | |
244 | IRQ0STATUS_CCDC_LSC_PREF_COMP_IRQ) { | |
245 | isp_reg_writel(isp, IRQ0STATUS_CCDC_LSC_PREF_COMP_IRQ, | |
246 | OMAP3_ISP_IOMEM_MAIN, ISP_IRQ0STATUS); | |
247 | return 0; | |
248 | } | |
249 | ||
250 | rmb(); | |
251 | udelay(1); | |
252 | } | |
253 | ||
254 | return -ETIMEDOUT; | |
255 | } | |
256 | ||
257 | /* | |
258 | * __ccdc_lsc_enable - Enables/Disables the Lens Shading Compensation module. | |
259 | * @ccdc: Pointer to ISP CCDC device. | |
260 | * @enable: 0 Disables LSC, 1 Enables LSC. | |
261 | */ | |
262 | static int __ccdc_lsc_enable(struct isp_ccdc_device *ccdc, int enable) | |
263 | { | |
264 | struct isp_device *isp = to_isp_device(ccdc); | |
265 | const struct v4l2_mbus_framefmt *format = | |
266 | __ccdc_get_format(ccdc, NULL, CCDC_PAD_SINK, | |
267 | V4L2_SUBDEV_FORMAT_ACTIVE); | |
268 | ||
269 | if ((format->code != V4L2_MBUS_FMT_SGRBG10_1X10) && | |
270 | (format->code != V4L2_MBUS_FMT_SRGGB10_1X10) && | |
271 | (format->code != V4L2_MBUS_FMT_SBGGR10_1X10) && | |
272 | (format->code != V4L2_MBUS_FMT_SGBRG10_1X10)) | |
273 | return -EINVAL; | |
274 | ||
275 | if (enable) | |
276 | omap3isp_sbl_enable(isp, OMAP3_ISP_SBL_CCDC_LSC_READ); | |
277 | ||
278 | isp_reg_clr_set(isp, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_LSC_CONFIG, | |
279 | ISPCCDC_LSC_ENABLE, enable ? ISPCCDC_LSC_ENABLE : 0); | |
280 | ||
281 | if (enable) { | |
282 | if (ccdc_lsc_wait_prefetch(ccdc) < 0) { | |
283 | isp_reg_clr(isp, OMAP3_ISP_IOMEM_CCDC, | |
284 | ISPCCDC_LSC_CONFIG, ISPCCDC_LSC_ENABLE); | |
285 | ccdc->lsc.state = LSC_STATE_STOPPED; | |
25aeb418 | 286 | dev_warn(to_device(ccdc), "LSC prefetch timeout\n"); |
de1135d4 LP |
287 | return -ETIMEDOUT; |
288 | } | |
289 | ccdc->lsc.state = LSC_STATE_RUNNING; | |
290 | } else { | |
291 | ccdc->lsc.state = LSC_STATE_STOPPING; | |
292 | } | |
293 | ||
294 | return 0; | |
295 | } | |
296 | ||
297 | static int ccdc_lsc_busy(struct isp_ccdc_device *ccdc) | |
298 | { | |
299 | struct isp_device *isp = to_isp_device(ccdc); | |
300 | ||
301 | return isp_reg_readl(isp, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_LSC_CONFIG) & | |
302 | ISPCCDC_LSC_BUSY; | |
303 | } | |
304 | ||
305 | /* __ccdc_lsc_configure - Apply a new configuration to the LSC engine | |
306 | * @ccdc: Pointer to ISP CCDC device | |
307 | * @req: New configuration request | |
308 | * | |
309 | * context: in_interrupt() | |
310 | */ | |
311 | static int __ccdc_lsc_configure(struct isp_ccdc_device *ccdc, | |
312 | struct ispccdc_lsc_config_req *req) | |
313 | { | |
314 | if (!req->enable) | |
315 | return -EINVAL; | |
316 | ||
317 | if (ccdc_lsc_validate_config(ccdc, &req->config) < 0) { | |
318 | dev_dbg(to_device(ccdc), "Discard LSC configuration\n"); | |
319 | return -EINVAL; | |
320 | } | |
321 | ||
322 | if (ccdc_lsc_busy(ccdc)) | |
323 | return -EBUSY; | |
324 | ||
325 | ccdc_lsc_setup_regs(ccdc, &req->config); | |
d33186d0 | 326 | ccdc_lsc_program_table(ccdc, req->table.dma); |
de1135d4 LP |
327 | return 0; |
328 | } | |
329 | ||
330 | /* | |
331 | * ccdc_lsc_error_handler - Handle LSC prefetch error scenario. | |
332 | * @ccdc: Pointer to ISP CCDC device. | |
333 | * | |
334 | * Disables LSC, and defers enablement to shadow registers update time. | |
335 | */ | |
336 | static void ccdc_lsc_error_handler(struct isp_ccdc_device *ccdc) | |
337 | { | |
338 | struct isp_device *isp = to_isp_device(ccdc); | |
339 | /* | |
340 | * From OMAP3 TRM: When this event is pending, the module | |
341 | * goes into transparent mode (output =input). Normal | |
342 | * operation can be resumed at the start of the next frame | |
343 | * after: | |
344 | * 1) Clearing this event | |
345 | * 2) Disabling the LSC module | |
346 | * 3) Enabling it | |
347 | */ | |
348 | isp_reg_clr(isp, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_LSC_CONFIG, | |
349 | ISPCCDC_LSC_ENABLE); | |
350 | ccdc->lsc.state = LSC_STATE_STOPPED; | |
351 | } | |
352 | ||
353 | static void ccdc_lsc_free_request(struct isp_ccdc_device *ccdc, | |
354 | struct ispccdc_lsc_config_req *req) | |
355 | { | |
356 | struct isp_device *isp = to_isp_device(ccdc); | |
357 | ||
358 | if (req == NULL) | |
359 | return; | |
360 | ||
d33186d0 LP |
361 | if (req->table.addr) { |
362 | sg_free_table(&req->table.sgt); | |
363 | dma_free_coherent(isp->dev, req->config.size, req->table.addr, | |
364 | req->table.dma); | |
365 | } | |
366 | ||
de1135d4 LP |
367 | kfree(req); |
368 | } | |
369 | ||
370 | static void ccdc_lsc_free_queue(struct isp_ccdc_device *ccdc, | |
371 | struct list_head *queue) | |
372 | { | |
373 | struct ispccdc_lsc_config_req *req, *n; | |
374 | unsigned long flags; | |
375 | ||
376 | spin_lock_irqsave(&ccdc->lsc.req_lock, flags); | |
377 | list_for_each_entry_safe(req, n, queue, list) { | |
378 | list_del(&req->list); | |
379 | spin_unlock_irqrestore(&ccdc->lsc.req_lock, flags); | |
380 | ccdc_lsc_free_request(ccdc, req); | |
381 | spin_lock_irqsave(&ccdc->lsc.req_lock, flags); | |
382 | } | |
383 | spin_unlock_irqrestore(&ccdc->lsc.req_lock, flags); | |
384 | } | |
385 | ||
386 | static void ccdc_lsc_free_table_work(struct work_struct *work) | |
387 | { | |
388 | struct isp_ccdc_device *ccdc; | |
389 | struct ispccdc_lsc *lsc; | |
390 | ||
391 | lsc = container_of(work, struct ispccdc_lsc, table_work); | |
392 | ccdc = container_of(lsc, struct isp_ccdc_device, lsc); | |
393 | ||
394 | ccdc_lsc_free_queue(ccdc, &lsc->free_queue); | |
395 | } | |
396 | ||
397 | /* | |
398 | * ccdc_lsc_config - Configure the LSC module from a userspace request | |
399 | * | |
400 | * Store the request LSC configuration in the LSC engine request pointer. The | |
401 | * configuration will be applied to the hardware when the CCDC will be enabled, | |
402 | * or at the next LSC interrupt if the CCDC is already running. | |
403 | */ | |
404 | static int ccdc_lsc_config(struct isp_ccdc_device *ccdc, | |
405 | struct omap3isp_ccdc_update_config *config) | |
406 | { | |
407 | struct isp_device *isp = to_isp_device(ccdc); | |
408 | struct ispccdc_lsc_config_req *req; | |
409 | unsigned long flags; | |
de1135d4 LP |
410 | u16 update; |
411 | int ret; | |
412 | ||
413 | update = config->update & | |
414 | (OMAP3ISP_CCDC_CONFIG_LSC | OMAP3ISP_CCDC_TBL_LSC); | |
415 | if (!update) | |
416 | return 0; | |
417 | ||
418 | if (update != (OMAP3ISP_CCDC_CONFIG_LSC | OMAP3ISP_CCDC_TBL_LSC)) { | |
419 | dev_dbg(to_device(ccdc), "%s: Both LSC configuration and table " | |
420 | "need to be supplied\n", __func__); | |
421 | return -EINVAL; | |
422 | } | |
423 | ||
424 | req = kzalloc(sizeof(*req), GFP_KERNEL); | |
425 | if (req == NULL) | |
426 | return -ENOMEM; | |
427 | ||
428 | if (config->flag & OMAP3ISP_CCDC_CONFIG_LSC) { | |
429 | if (copy_from_user(&req->config, config->lsc_cfg, | |
430 | sizeof(req->config))) { | |
431 | ret = -EFAULT; | |
432 | goto done; | |
433 | } | |
434 | ||
435 | req->enable = 1; | |
436 | ||
d33186d0 LP |
437 | req->table.addr = dma_alloc_coherent(isp->dev, req->config.size, |
438 | &req->table.dma, | |
439 | GFP_KERNEL); | |
440 | if (req->table.addr == NULL) { | |
de1135d4 LP |
441 | ret = -ENOMEM; |
442 | goto done; | |
443 | } | |
444 | ||
d33186d0 LP |
445 | ret = dma_get_sgtable(isp->dev, &req->table.sgt, |
446 | req->table.addr, req->table.dma, | |
447 | req->config.size); | |
448 | if (ret < 0) | |
de1135d4 | 449 | goto done; |
de1135d4 | 450 | |
d33186d0 LP |
451 | dma_sync_sg_for_cpu(isp->dev, req->table.sgt.sgl, |
452 | req->table.sgt.nents, DMA_TO_DEVICE); | |
de1135d4 | 453 | |
d33186d0 LP |
454 | if (copy_from_user(req->table.addr, config->lsc, |
455 | req->config.size)) { | |
de1135d4 LP |
456 | ret = -EFAULT; |
457 | goto done; | |
458 | } | |
459 | ||
d33186d0 LP |
460 | dma_sync_sg_for_device(isp->dev, req->table.sgt.sgl, |
461 | req->table.sgt.nents, DMA_TO_DEVICE); | |
de1135d4 LP |
462 | } |
463 | ||
464 | spin_lock_irqsave(&ccdc->lsc.req_lock, flags); | |
465 | if (ccdc->lsc.request) { | |
466 | list_add_tail(&ccdc->lsc.request->list, &ccdc->lsc.free_queue); | |
467 | schedule_work(&ccdc->lsc.table_work); | |
468 | } | |
469 | ccdc->lsc.request = req; | |
470 | spin_unlock_irqrestore(&ccdc->lsc.req_lock, flags); | |
471 | ||
472 | ret = 0; | |
473 | ||
474 | done: | |
475 | if (ret < 0) | |
476 | ccdc_lsc_free_request(ccdc, req); | |
477 | ||
478 | return ret; | |
479 | } | |
480 | ||
481 | static inline int ccdc_lsc_is_configured(struct isp_ccdc_device *ccdc) | |
482 | { | |
483 | unsigned long flags; | |
484 | ||
485 | spin_lock_irqsave(&ccdc->lsc.req_lock, flags); | |
486 | if (ccdc->lsc.active) { | |
487 | spin_unlock_irqrestore(&ccdc->lsc.req_lock, flags); | |
488 | return 1; | |
489 | } | |
490 | spin_unlock_irqrestore(&ccdc->lsc.req_lock, flags); | |
491 | return 0; | |
492 | } | |
493 | ||
494 | static int ccdc_lsc_enable(struct isp_ccdc_device *ccdc) | |
495 | { | |
496 | struct ispccdc_lsc *lsc = &ccdc->lsc; | |
497 | ||
498 | if (lsc->state != LSC_STATE_STOPPED) | |
499 | return -EINVAL; | |
500 | ||
501 | if (lsc->active) { | |
502 | list_add_tail(&lsc->active->list, &lsc->free_queue); | |
503 | lsc->active = NULL; | |
504 | } | |
505 | ||
506 | if (__ccdc_lsc_configure(ccdc, lsc->request) < 0) { | |
507 | omap3isp_sbl_disable(to_isp_device(ccdc), | |
508 | OMAP3_ISP_SBL_CCDC_LSC_READ); | |
509 | list_add_tail(&lsc->request->list, &lsc->free_queue); | |
510 | lsc->request = NULL; | |
511 | goto done; | |
512 | } | |
513 | ||
514 | lsc->active = lsc->request; | |
515 | lsc->request = NULL; | |
516 | __ccdc_lsc_enable(ccdc, 1); | |
517 | ||
518 | done: | |
519 | if (!list_empty(&lsc->free_queue)) | |
520 | schedule_work(&lsc->table_work); | |
521 | ||
522 | return 0; | |
523 | } | |
524 | ||
525 | /* ----------------------------------------------------------------------------- | |
526 | * Parameters configuration | |
527 | */ | |
528 | ||
529 | /* | |
530 | * ccdc_configure_clamp - Configure optical-black or digital clamping | |
531 | * @ccdc: Pointer to ISP CCDC device. | |
532 | * | |
533 | * The CCDC performs either optical-black or digital clamp. Configure and enable | |
534 | * the selected clamp method. | |
535 | */ | |
536 | static void ccdc_configure_clamp(struct isp_ccdc_device *ccdc) | |
537 | { | |
538 | struct isp_device *isp = to_isp_device(ccdc); | |
539 | u32 clamp; | |
540 | ||
541 | if (ccdc->obclamp) { | |
542 | clamp = ccdc->clamp.obgain << ISPCCDC_CLAMP_OBGAIN_SHIFT; | |
543 | clamp |= ccdc->clamp.oblen << ISPCCDC_CLAMP_OBSLEN_SHIFT; | |
544 | clamp |= ccdc->clamp.oblines << ISPCCDC_CLAMP_OBSLN_SHIFT; | |
545 | clamp |= ccdc->clamp.obstpixel << ISPCCDC_CLAMP_OBST_SHIFT; | |
546 | isp_reg_writel(isp, clamp, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_CLAMP); | |
547 | } else { | |
548 | isp_reg_writel(isp, ccdc->clamp.dcsubval, | |
549 | OMAP3_ISP_IOMEM_CCDC, ISPCCDC_DCSUB); | |
550 | } | |
551 | ||
552 | isp_reg_clr_set(isp, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_CLAMP, | |
553 | ISPCCDC_CLAMP_CLAMPEN, | |
554 | ccdc->obclamp ? ISPCCDC_CLAMP_CLAMPEN : 0); | |
555 | } | |
556 | ||
557 | /* | |
558 | * ccdc_configure_fpc - Configure Faulty Pixel Correction | |
559 | * @ccdc: Pointer to ISP CCDC device. | |
560 | */ | |
561 | static void ccdc_configure_fpc(struct isp_ccdc_device *ccdc) | |
562 | { | |
563 | struct isp_device *isp = to_isp_device(ccdc); | |
564 | ||
565 | isp_reg_clr(isp, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_FPC, ISPCCDC_FPC_FPCEN); | |
566 | ||
567 | if (!ccdc->fpc_en) | |
568 | return; | |
569 | ||
c60e153d | 570 | isp_reg_writel(isp, ccdc->fpc.dma, OMAP3_ISP_IOMEM_CCDC, |
de1135d4 LP |
571 | ISPCCDC_FPC_ADDR); |
572 | /* The FPNUM field must be set before enabling FPC. */ | |
573 | isp_reg_writel(isp, (ccdc->fpc.fpnum << ISPCCDC_FPC_FPNUM_SHIFT), | |
574 | OMAP3_ISP_IOMEM_CCDC, ISPCCDC_FPC); | |
575 | isp_reg_writel(isp, (ccdc->fpc.fpnum << ISPCCDC_FPC_FPNUM_SHIFT) | | |
576 | ISPCCDC_FPC_FPCEN, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_FPC); | |
577 | } | |
578 | ||
579 | /* | |
580 | * ccdc_configure_black_comp - Configure Black Level Compensation. | |
581 | * @ccdc: Pointer to ISP CCDC device. | |
582 | */ | |
583 | static void ccdc_configure_black_comp(struct isp_ccdc_device *ccdc) | |
584 | { | |
585 | struct isp_device *isp = to_isp_device(ccdc); | |
586 | u32 blcomp; | |
587 | ||
588 | blcomp = ccdc->blcomp.b_mg << ISPCCDC_BLKCMP_B_MG_SHIFT; | |
589 | blcomp |= ccdc->blcomp.gb_g << ISPCCDC_BLKCMP_GB_G_SHIFT; | |
590 | blcomp |= ccdc->blcomp.gr_cy << ISPCCDC_BLKCMP_GR_CY_SHIFT; | |
591 | blcomp |= ccdc->blcomp.r_ye << ISPCCDC_BLKCMP_R_YE_SHIFT; | |
592 | ||
593 | isp_reg_writel(isp, blcomp, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_BLKCMP); | |
594 | } | |
595 | ||
596 | /* | |
597 | * ccdc_configure_lpf - Configure Low-Pass Filter (LPF). | |
598 | * @ccdc: Pointer to ISP CCDC device. | |
599 | */ | |
600 | static void ccdc_configure_lpf(struct isp_ccdc_device *ccdc) | |
601 | { | |
602 | struct isp_device *isp = to_isp_device(ccdc); | |
603 | ||
604 | isp_reg_clr_set(isp, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_SYN_MODE, | |
605 | ISPCCDC_SYN_MODE_LPF, | |
606 | ccdc->lpf ? ISPCCDC_SYN_MODE_LPF : 0); | |
607 | } | |
608 | ||
609 | /* | |
610 | * ccdc_configure_alaw - Configure A-law compression. | |
611 | * @ccdc: Pointer to ISP CCDC device. | |
612 | */ | |
613 | static void ccdc_configure_alaw(struct isp_ccdc_device *ccdc) | |
614 | { | |
615 | struct isp_device *isp = to_isp_device(ccdc); | |
73ea57eb | 616 | const struct isp_format_info *info; |
de1135d4 LP |
617 | u32 alaw = 0; |
618 | ||
73ea57eb LP |
619 | info = omap3isp_video_format_info(ccdc->formats[CCDC_PAD_SINK].code); |
620 | ||
621 | switch (info->width) { | |
de1135d4 LP |
622 | case 8: |
623 | return; | |
624 | ||
625 | case 10: | |
626 | alaw = ISPCCDC_ALAW_GWDI_9_0; | |
627 | break; | |
628 | case 11: | |
629 | alaw = ISPCCDC_ALAW_GWDI_10_1; | |
630 | break; | |
631 | case 12: | |
632 | alaw = ISPCCDC_ALAW_GWDI_11_2; | |
633 | break; | |
634 | case 13: | |
635 | alaw = ISPCCDC_ALAW_GWDI_12_3; | |
636 | break; | |
637 | } | |
638 | ||
639 | if (ccdc->alaw) | |
640 | alaw |= ISPCCDC_ALAW_CCDTBL; | |
641 | ||
642 | isp_reg_writel(isp, alaw, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_ALAW); | |
643 | } | |
644 | ||
645 | /* | |
646 | * ccdc_config_imgattr - Configure sensor image specific attributes. | |
647 | * @ccdc: Pointer to ISP CCDC device. | |
648 | * @colptn: Color pattern of the sensor. | |
649 | */ | |
650 | static void ccdc_config_imgattr(struct isp_ccdc_device *ccdc, u32 colptn) | |
651 | { | |
652 | struct isp_device *isp = to_isp_device(ccdc); | |
653 | ||
654 | isp_reg_writel(isp, colptn, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_COLPTN); | |
655 | } | |
656 | ||
657 | /* | |
658 | * ccdc_config - Set CCDC configuration from userspace | |
659 | * @ccdc: Pointer to ISP CCDC device. | |
872aba51 | 660 | * @ccdc_struct: Structure containing CCDC configuration sent from userspace. |
de1135d4 LP |
661 | * |
662 | * Returns 0 if successful, -EINVAL if the pointer to the configuration | |
663 | * structure is null, or the copy_from_user function fails to copy user space | |
664 | * memory to kernel space memory. | |
665 | */ | |
666 | static int ccdc_config(struct isp_ccdc_device *ccdc, | |
667 | struct omap3isp_ccdc_update_config *ccdc_struct) | |
668 | { | |
669 | struct isp_device *isp = to_isp_device(ccdc); | |
670 | unsigned long flags; | |
671 | ||
672 | spin_lock_irqsave(&ccdc->lock, flags); | |
673 | ccdc->shadow_update = 1; | |
674 | spin_unlock_irqrestore(&ccdc->lock, flags); | |
675 | ||
676 | if (OMAP3ISP_CCDC_ALAW & ccdc_struct->update) { | |
677 | ccdc->alaw = !!(OMAP3ISP_CCDC_ALAW & ccdc_struct->flag); | |
678 | ccdc->update |= OMAP3ISP_CCDC_ALAW; | |
679 | } | |
680 | ||
681 | if (OMAP3ISP_CCDC_LPF & ccdc_struct->update) { | |
682 | ccdc->lpf = !!(OMAP3ISP_CCDC_LPF & ccdc_struct->flag); | |
683 | ccdc->update |= OMAP3ISP_CCDC_LPF; | |
684 | } | |
685 | ||
686 | if (OMAP3ISP_CCDC_BLCLAMP & ccdc_struct->update) { | |
687 | if (copy_from_user(&ccdc->clamp, ccdc_struct->bclamp, | |
688 | sizeof(ccdc->clamp))) { | |
689 | ccdc->shadow_update = 0; | |
690 | return -EFAULT; | |
691 | } | |
692 | ||
693 | ccdc->obclamp = !!(OMAP3ISP_CCDC_BLCLAMP & ccdc_struct->flag); | |
694 | ccdc->update |= OMAP3ISP_CCDC_BLCLAMP; | |
695 | } | |
696 | ||
697 | if (OMAP3ISP_CCDC_BCOMP & ccdc_struct->update) { | |
698 | if (copy_from_user(&ccdc->blcomp, ccdc_struct->blcomp, | |
699 | sizeof(ccdc->blcomp))) { | |
700 | ccdc->shadow_update = 0; | |
701 | return -EFAULT; | |
702 | } | |
703 | ||
704 | ccdc->update |= OMAP3ISP_CCDC_BCOMP; | |
705 | } | |
706 | ||
707 | ccdc->shadow_update = 0; | |
708 | ||
709 | if (OMAP3ISP_CCDC_FPC & ccdc_struct->update) { | |
c60e153d LP |
710 | struct omap3isp_ccdc_fpc fpc; |
711 | struct ispccdc_fpc fpc_old = { .addr = NULL, }; | |
712 | struct ispccdc_fpc fpc_new; | |
de1135d4 LP |
713 | u32 size; |
714 | ||
715 | if (ccdc->state != ISP_PIPELINE_STREAM_STOPPED) | |
716 | return -EBUSY; | |
717 | ||
718 | ccdc->fpc_en = !!(OMAP3ISP_CCDC_FPC & ccdc_struct->flag); | |
719 | ||
720 | if (ccdc->fpc_en) { | |
c60e153d | 721 | if (copy_from_user(&fpc, ccdc_struct->fpc, sizeof(fpc))) |
de1135d4 LP |
722 | return -EFAULT; |
723 | ||
c60e153d LP |
724 | size = fpc.fpnum * 4; |
725 | ||
de1135d4 | 726 | /* |
c60e153d LP |
727 | * The table address must be 64-bytes aligned, which is |
728 | * guaranteed by dma_alloc_coherent(). | |
de1135d4 | 729 | */ |
c60e153d LP |
730 | fpc_new.fpnum = fpc.fpnum; |
731 | fpc_new.addr = dma_alloc_coherent(isp->dev, size, | |
732 | &fpc_new.dma, | |
733 | GFP_KERNEL); | |
734 | if (fpc_new.addr == NULL) | |
de1135d4 LP |
735 | return -ENOMEM; |
736 | ||
c60e153d LP |
737 | if (copy_from_user(fpc_new.addr, |
738 | (__force void __user *)fpc.fpcaddr, | |
739 | size)) { | |
740 | dma_free_coherent(isp->dev, size, fpc_new.addr, | |
741 | fpc_new.dma); | |
de1135d4 LP |
742 | return -EFAULT; |
743 | } | |
744 | ||
c60e153d LP |
745 | fpc_old = ccdc->fpc; |
746 | ccdc->fpc = fpc_new; | |
de1135d4 LP |
747 | } |
748 | ||
749 | ccdc_configure_fpc(ccdc); | |
c60e153d LP |
750 | |
751 | if (fpc_old.addr != NULL) | |
752 | dma_free_coherent(isp->dev, fpc_old.fpnum * 4, | |
753 | fpc_old.addr, fpc_old.dma); | |
de1135d4 LP |
754 | } |
755 | ||
756 | return ccdc_lsc_config(ccdc, ccdc_struct); | |
757 | } | |
758 | ||
759 | static void ccdc_apply_controls(struct isp_ccdc_device *ccdc) | |
760 | { | |
761 | if (ccdc->update & OMAP3ISP_CCDC_ALAW) { | |
762 | ccdc_configure_alaw(ccdc); | |
763 | ccdc->update &= ~OMAP3ISP_CCDC_ALAW; | |
764 | } | |
765 | ||
766 | if (ccdc->update & OMAP3ISP_CCDC_LPF) { | |
767 | ccdc_configure_lpf(ccdc); | |
768 | ccdc->update &= ~OMAP3ISP_CCDC_LPF; | |
769 | } | |
770 | ||
771 | if (ccdc->update & OMAP3ISP_CCDC_BLCLAMP) { | |
772 | ccdc_configure_clamp(ccdc); | |
773 | ccdc->update &= ~OMAP3ISP_CCDC_BLCLAMP; | |
774 | } | |
775 | ||
776 | if (ccdc->update & OMAP3ISP_CCDC_BCOMP) { | |
777 | ccdc_configure_black_comp(ccdc); | |
778 | ccdc->update &= ~OMAP3ISP_CCDC_BCOMP; | |
779 | } | |
780 | } | |
781 | ||
782 | /* | |
783 | * omap3isp_ccdc_restore_context - Restore values of the CCDC module registers | |
872aba51 | 784 | * @isp: Pointer to ISP device |
de1135d4 LP |
785 | */ |
786 | void omap3isp_ccdc_restore_context(struct isp_device *isp) | |
787 | { | |
788 | struct isp_ccdc_device *ccdc = &isp->isp_ccdc; | |
789 | ||
790 | isp_reg_set(isp, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_CFG, ISPCCDC_CFG_VDLC); | |
791 | ||
792 | ccdc->update = OMAP3ISP_CCDC_ALAW | OMAP3ISP_CCDC_LPF | |
793 | | OMAP3ISP_CCDC_BLCLAMP | OMAP3ISP_CCDC_BCOMP; | |
794 | ccdc_apply_controls(ccdc); | |
795 | ccdc_configure_fpc(ccdc); | |
796 | } | |
797 | ||
798 | /* ----------------------------------------------------------------------------- | |
799 | * Format- and pipeline-related configuration helpers | |
800 | */ | |
801 | ||
802 | /* | |
803 | * ccdc_config_vp - Configure the Video Port. | |
804 | * @ccdc: Pointer to ISP CCDC device. | |
805 | */ | |
806 | static void ccdc_config_vp(struct isp_ccdc_device *ccdc) | |
807 | { | |
808 | struct isp_pipeline *pipe = to_isp_pipeline(&ccdc->subdev.entity); | |
809 | struct isp_device *isp = to_isp_device(ccdc); | |
73ea57eb | 810 | const struct isp_format_info *info; |
de1135d4 LP |
811 | unsigned long l3_ick = pipe->l3_ick; |
812 | unsigned int max_div = isp->revision == ISP_REVISION_15_0 ? 64 : 8; | |
813 | unsigned int div = 0; | |
814 | u32 fmtcfg_vp; | |
815 | ||
816 | fmtcfg_vp = isp_reg_readl(isp, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_FMTCFG) | |
817 | & ~(ISPCCDC_FMTCFG_VPIN_MASK | ISPCCDC_FMTCFG_VPIF_FRQ_MASK); | |
818 | ||
73ea57eb LP |
819 | info = omap3isp_video_format_info(ccdc->formats[CCDC_PAD_SINK].code); |
820 | ||
821 | switch (info->width) { | |
de1135d4 LP |
822 | case 8: |
823 | case 10: | |
824 | fmtcfg_vp |= ISPCCDC_FMTCFG_VPIN_9_0; | |
825 | break; | |
826 | case 11: | |
827 | fmtcfg_vp |= ISPCCDC_FMTCFG_VPIN_10_1; | |
828 | break; | |
829 | case 12: | |
830 | fmtcfg_vp |= ISPCCDC_FMTCFG_VPIN_11_2; | |
831 | break; | |
832 | case 13: | |
833 | fmtcfg_vp |= ISPCCDC_FMTCFG_VPIN_12_3; | |
834 | break; | |
13eaaa7f | 835 | } |
de1135d4 LP |
836 | |
837 | if (pipe->input) | |
838 | div = DIV_ROUND_UP(l3_ick, pipe->max_rate); | |
c6c01f97 SA |
839 | else if (pipe->external_rate) |
840 | div = l3_ick / pipe->external_rate; | |
de1135d4 LP |
841 | |
842 | div = clamp(div, 2U, max_div); | |
843 | fmtcfg_vp |= (div - 2) << ISPCCDC_FMTCFG_VPIF_FRQ_SHIFT; | |
844 | ||
845 | isp_reg_writel(isp, fmtcfg_vp, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_FMTCFG); | |
846 | } | |
847 | ||
848 | /* | |
849 | * ccdc_enable_vp - Enable Video Port. | |
850 | * @ccdc: Pointer to ISP CCDC device. | |
851 | * @enable: 0 Disables VP, 1 Enables VP | |
852 | * | |
853 | * This is needed for outputting image to Preview, H3A and HIST ISP submodules. | |
854 | */ | |
855 | static void ccdc_enable_vp(struct isp_ccdc_device *ccdc, u8 enable) | |
856 | { | |
857 | struct isp_device *isp = to_isp_device(ccdc); | |
858 | ||
859 | isp_reg_clr_set(isp, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_FMTCFG, | |
860 | ISPCCDC_FMTCFG_VPEN, enable ? ISPCCDC_FMTCFG_VPEN : 0); | |
861 | } | |
862 | ||
863 | /* | |
864 | * ccdc_config_outlineoffset - Configure memory saving output line offset | |
865 | * @ccdc: Pointer to ISP CCDC device. | |
866 | * @offset: Address offset to start a new line. Must be twice the | |
867 | * Output width and aligned on 32 byte boundary | |
868 | * @oddeven: Specifies the odd/even line pattern to be chosen to store the | |
869 | * output. | |
870 | * @numlines: Set the value 0-3 for +1-4lines, 4-7 for -1-4lines. | |
871 | * | |
872 | * - Configures the output line offset when stored in memory | |
873 | * - Sets the odd/even line pattern to store the output | |
874 | * (EVENEVEN (1), ODDEVEN (2), EVENODD (3), ODDODD (4)) | |
875 | * - Configures the number of even and odd line fields in case of rearranging | |
876 | * the lines. | |
877 | */ | |
878 | static void ccdc_config_outlineoffset(struct isp_ccdc_device *ccdc, | |
879 | u32 offset, u8 oddeven, u8 numlines) | |
880 | { | |
881 | struct isp_device *isp = to_isp_device(ccdc); | |
882 | ||
883 | isp_reg_writel(isp, offset & 0xffff, | |
884 | OMAP3_ISP_IOMEM_CCDC, ISPCCDC_HSIZE_OFF); | |
885 | ||
886 | isp_reg_clr(isp, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_SDOFST, | |
887 | ISPCCDC_SDOFST_FINV); | |
888 | ||
889 | isp_reg_clr(isp, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_SDOFST, | |
890 | ISPCCDC_SDOFST_FOFST_4L); | |
891 | ||
892 | switch (oddeven) { | |
893 | case EVENEVEN: | |
894 | isp_reg_set(isp, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_SDOFST, | |
895 | (numlines & 0x7) << ISPCCDC_SDOFST_LOFST0_SHIFT); | |
896 | break; | |
897 | case ODDEVEN: | |
898 | isp_reg_set(isp, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_SDOFST, | |
899 | (numlines & 0x7) << ISPCCDC_SDOFST_LOFST1_SHIFT); | |
900 | break; | |
901 | case EVENODD: | |
902 | isp_reg_set(isp, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_SDOFST, | |
903 | (numlines & 0x7) << ISPCCDC_SDOFST_LOFST2_SHIFT); | |
904 | break; | |
905 | case ODDODD: | |
906 | isp_reg_set(isp, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_SDOFST, | |
907 | (numlines & 0x7) << ISPCCDC_SDOFST_LOFST3_SHIFT); | |
908 | break; | |
909 | default: | |
910 | break; | |
911 | } | |
912 | } | |
913 | ||
914 | /* | |
915 | * ccdc_set_outaddr - Set memory address to save output image | |
916 | * @ccdc: Pointer to ISP CCDC device. | |
917 | * @addr: ISP MMU Mapped 32-bit memory address aligned on 32 byte boundary. | |
918 | * | |
919 | * Sets the memory address where the output will be saved. | |
920 | */ | |
921 | static void ccdc_set_outaddr(struct isp_ccdc_device *ccdc, u32 addr) | |
922 | { | |
923 | struct isp_device *isp = to_isp_device(ccdc); | |
924 | ||
925 | isp_reg_writel(isp, addr, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_SDR_ADDR); | |
926 | } | |
927 | ||
928 | /* | |
929 | * omap3isp_ccdc_max_rate - Calculate maximum input data rate based on the input | |
930 | * @ccdc: Pointer to ISP CCDC device. | |
931 | * @max_rate: Maximum calculated data rate. | |
932 | * | |
933 | * Returns in *max_rate less value between calculated and passed | |
934 | */ | |
935 | void omap3isp_ccdc_max_rate(struct isp_ccdc_device *ccdc, | |
936 | unsigned int *max_rate) | |
937 | { | |
938 | struct isp_pipeline *pipe = to_isp_pipeline(&ccdc->subdev.entity); | |
939 | unsigned int rate; | |
940 | ||
941 | if (pipe == NULL) | |
942 | return; | |
943 | ||
944 | /* | |
945 | * TRM says that for parallel sensors the maximum data rate | |
946 | * should be 90% form L3/2 clock, otherwise just L3/2. | |
947 | */ | |
948 | if (ccdc->input == CCDC_INPUT_PARALLEL) | |
949 | rate = pipe->l3_ick / 2 * 9 / 10; | |
950 | else | |
951 | rate = pipe->l3_ick / 2; | |
952 | ||
953 | *max_rate = min(*max_rate, rate); | |
954 | } | |
955 | ||
956 | /* | |
957 | * ccdc_config_sync_if - Set CCDC sync interface configuration | |
958 | * @ccdc: Pointer to ISP CCDC device. | |
73ea57eb LP |
959 | * @pdata: Parallel interface platform data (may be NULL) |
960 | * @data_size: Data size | |
de1135d4 LP |
961 | */ |
962 | static void ccdc_config_sync_if(struct isp_ccdc_device *ccdc, | |
73ea57eb LP |
963 | struct isp_parallel_platform_data *pdata, |
964 | unsigned int data_size) | |
de1135d4 LP |
965 | { |
966 | struct isp_device *isp = to_isp_device(ccdc); | |
c51364ca | 967 | const struct v4l2_mbus_framefmt *format; |
cf7a3d91 | 968 | u32 syn_mode = ISPCCDC_SYN_MODE_VDHDEN; |
de1135d4 | 969 | |
c51364ca LP |
970 | format = &ccdc->formats[CCDC_PAD_SINK]; |
971 | ||
972 | if (format->code == V4L2_MBUS_FMT_YUYV8_2X8 || | |
973 | format->code == V4L2_MBUS_FMT_UYVY8_2X8) { | |
974 | /* The bridge is enabled for YUV8 formats. Configure the input | |
975 | * mode accordingly. | |
976 | */ | |
977 | syn_mode |= ISPCCDC_SYN_MODE_INPMOD_YCBCR16; | |
978 | } | |
979 | ||
73ea57eb | 980 | switch (data_size) { |
de1135d4 LP |
981 | case 8: |
982 | syn_mode |= ISPCCDC_SYN_MODE_DATSIZ_8; | |
983 | break; | |
984 | case 10: | |
985 | syn_mode |= ISPCCDC_SYN_MODE_DATSIZ_10; | |
986 | break; | |
987 | case 11: | |
988 | syn_mode |= ISPCCDC_SYN_MODE_DATSIZ_11; | |
989 | break; | |
990 | case 12: | |
991 | syn_mode |= ISPCCDC_SYN_MODE_DATSIZ_12; | |
992 | break; | |
13eaaa7f | 993 | } |
de1135d4 | 994 | |
73ea57eb | 995 | if (pdata && pdata->data_pol) |
de1135d4 | 996 | syn_mode |= ISPCCDC_SYN_MODE_DATAPOL; |
de1135d4 | 997 | |
73ea57eb | 998 | if (pdata && pdata->hs_pol) |
de1135d4 | 999 | syn_mode |= ISPCCDC_SYN_MODE_HDPOL; |
de1135d4 | 1000 | |
73ea57eb | 1001 | if (pdata && pdata->vs_pol) |
de1135d4 | 1002 | syn_mode |= ISPCCDC_SYN_MODE_VDPOL; |
de1135d4 LP |
1003 | |
1004 | isp_reg_writel(isp, syn_mode, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_SYN_MODE); | |
c51364ca LP |
1005 | |
1006 | /* The CCDC_CFG.Y8POS bit is used in YCbCr8 input mode only. The | |
1007 | * hardware seems to ignore it in all other input modes. | |
1008 | */ | |
1009 | if (format->code == V4L2_MBUS_FMT_UYVY8_2X8) | |
1010 | isp_reg_set(isp, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_CFG, | |
1011 | ISPCCDC_CFG_Y8POS); | |
1012 | else | |
1013 | isp_reg_clr(isp, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_CFG, | |
1014 | ISPCCDC_CFG_Y8POS); | |
1015 | ||
1016 | isp_reg_clr(isp, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_REC656IF, | |
1017 | ISPCCDC_REC656IF_R656ON); | |
de1135d4 LP |
1018 | } |
1019 | ||
1020 | /* CCDC formats descriptions */ | |
1021 | static const u32 ccdc_sgrbg_pattern = | |
1022 | ISPCCDC_COLPTN_Gr_Cy << ISPCCDC_COLPTN_CP0PLC0_SHIFT | | |
1023 | ISPCCDC_COLPTN_R_Ye << ISPCCDC_COLPTN_CP0PLC1_SHIFT | | |
1024 | ISPCCDC_COLPTN_Gr_Cy << ISPCCDC_COLPTN_CP0PLC2_SHIFT | | |
1025 | ISPCCDC_COLPTN_R_Ye << ISPCCDC_COLPTN_CP0PLC3_SHIFT | | |
1026 | ISPCCDC_COLPTN_B_Mg << ISPCCDC_COLPTN_CP1PLC0_SHIFT | | |
1027 | ISPCCDC_COLPTN_Gb_G << ISPCCDC_COLPTN_CP1PLC1_SHIFT | | |
1028 | ISPCCDC_COLPTN_B_Mg << ISPCCDC_COLPTN_CP1PLC2_SHIFT | | |
1029 | ISPCCDC_COLPTN_Gb_G << ISPCCDC_COLPTN_CP1PLC3_SHIFT | | |
1030 | ISPCCDC_COLPTN_Gr_Cy << ISPCCDC_COLPTN_CP2PLC0_SHIFT | | |
1031 | ISPCCDC_COLPTN_R_Ye << ISPCCDC_COLPTN_CP2PLC1_SHIFT | | |
1032 | ISPCCDC_COLPTN_Gr_Cy << ISPCCDC_COLPTN_CP2PLC2_SHIFT | | |
1033 | ISPCCDC_COLPTN_R_Ye << ISPCCDC_COLPTN_CP2PLC3_SHIFT | | |
1034 | ISPCCDC_COLPTN_B_Mg << ISPCCDC_COLPTN_CP3PLC0_SHIFT | | |
1035 | ISPCCDC_COLPTN_Gb_G << ISPCCDC_COLPTN_CP3PLC1_SHIFT | | |
1036 | ISPCCDC_COLPTN_B_Mg << ISPCCDC_COLPTN_CP3PLC2_SHIFT | | |
1037 | ISPCCDC_COLPTN_Gb_G << ISPCCDC_COLPTN_CP3PLC3_SHIFT; | |
1038 | ||
1039 | static const u32 ccdc_srggb_pattern = | |
1040 | ISPCCDC_COLPTN_R_Ye << ISPCCDC_COLPTN_CP0PLC0_SHIFT | | |
1041 | ISPCCDC_COLPTN_Gr_Cy << ISPCCDC_COLPTN_CP0PLC1_SHIFT | | |
1042 | ISPCCDC_COLPTN_R_Ye << ISPCCDC_COLPTN_CP0PLC2_SHIFT | | |
1043 | ISPCCDC_COLPTN_Gr_Cy << ISPCCDC_COLPTN_CP0PLC3_SHIFT | | |
1044 | ISPCCDC_COLPTN_Gb_G << ISPCCDC_COLPTN_CP1PLC0_SHIFT | | |
1045 | ISPCCDC_COLPTN_B_Mg << ISPCCDC_COLPTN_CP1PLC1_SHIFT | | |
1046 | ISPCCDC_COLPTN_Gb_G << ISPCCDC_COLPTN_CP1PLC2_SHIFT | | |
1047 | ISPCCDC_COLPTN_B_Mg << ISPCCDC_COLPTN_CP1PLC3_SHIFT | | |
1048 | ISPCCDC_COLPTN_R_Ye << ISPCCDC_COLPTN_CP2PLC0_SHIFT | | |
1049 | ISPCCDC_COLPTN_Gr_Cy << ISPCCDC_COLPTN_CP2PLC1_SHIFT | | |
1050 | ISPCCDC_COLPTN_R_Ye << ISPCCDC_COLPTN_CP2PLC2_SHIFT | | |
1051 | ISPCCDC_COLPTN_Gr_Cy << ISPCCDC_COLPTN_CP2PLC3_SHIFT | | |
1052 | ISPCCDC_COLPTN_Gb_G << ISPCCDC_COLPTN_CP3PLC0_SHIFT | | |
1053 | ISPCCDC_COLPTN_B_Mg << ISPCCDC_COLPTN_CP3PLC1_SHIFT | | |
1054 | ISPCCDC_COLPTN_Gb_G << ISPCCDC_COLPTN_CP3PLC2_SHIFT | | |
1055 | ISPCCDC_COLPTN_B_Mg << ISPCCDC_COLPTN_CP3PLC3_SHIFT; | |
1056 | ||
1057 | static const u32 ccdc_sbggr_pattern = | |
1058 | ISPCCDC_COLPTN_B_Mg << ISPCCDC_COLPTN_CP0PLC0_SHIFT | | |
1059 | ISPCCDC_COLPTN_Gb_G << ISPCCDC_COLPTN_CP0PLC1_SHIFT | | |
1060 | ISPCCDC_COLPTN_B_Mg << ISPCCDC_COLPTN_CP0PLC2_SHIFT | | |
1061 | ISPCCDC_COLPTN_Gb_G << ISPCCDC_COLPTN_CP0PLC3_SHIFT | | |
1062 | ISPCCDC_COLPTN_Gr_Cy << ISPCCDC_COLPTN_CP1PLC0_SHIFT | | |
1063 | ISPCCDC_COLPTN_R_Ye << ISPCCDC_COLPTN_CP1PLC1_SHIFT | | |
1064 | ISPCCDC_COLPTN_Gr_Cy << ISPCCDC_COLPTN_CP1PLC2_SHIFT | | |
1065 | ISPCCDC_COLPTN_R_Ye << ISPCCDC_COLPTN_CP1PLC3_SHIFT | | |
1066 | ISPCCDC_COLPTN_B_Mg << ISPCCDC_COLPTN_CP2PLC0_SHIFT | | |
1067 | ISPCCDC_COLPTN_Gb_G << ISPCCDC_COLPTN_CP2PLC1_SHIFT | | |
1068 | ISPCCDC_COLPTN_B_Mg << ISPCCDC_COLPTN_CP2PLC2_SHIFT | | |
1069 | ISPCCDC_COLPTN_Gb_G << ISPCCDC_COLPTN_CP2PLC3_SHIFT | | |
1070 | ISPCCDC_COLPTN_Gr_Cy << ISPCCDC_COLPTN_CP3PLC0_SHIFT | | |
1071 | ISPCCDC_COLPTN_R_Ye << ISPCCDC_COLPTN_CP3PLC1_SHIFT | | |
1072 | ISPCCDC_COLPTN_Gr_Cy << ISPCCDC_COLPTN_CP3PLC2_SHIFT | | |
1073 | ISPCCDC_COLPTN_R_Ye << ISPCCDC_COLPTN_CP3PLC3_SHIFT; | |
1074 | ||
1075 | static const u32 ccdc_sgbrg_pattern = | |
1076 | ISPCCDC_COLPTN_Gb_G << ISPCCDC_COLPTN_CP0PLC0_SHIFT | | |
1077 | ISPCCDC_COLPTN_B_Mg << ISPCCDC_COLPTN_CP0PLC1_SHIFT | | |
1078 | ISPCCDC_COLPTN_Gb_G << ISPCCDC_COLPTN_CP0PLC2_SHIFT | | |
1079 | ISPCCDC_COLPTN_B_Mg << ISPCCDC_COLPTN_CP0PLC3_SHIFT | | |
1080 | ISPCCDC_COLPTN_R_Ye << ISPCCDC_COLPTN_CP1PLC0_SHIFT | | |
1081 | ISPCCDC_COLPTN_Gr_Cy << ISPCCDC_COLPTN_CP1PLC1_SHIFT | | |
1082 | ISPCCDC_COLPTN_R_Ye << ISPCCDC_COLPTN_CP1PLC2_SHIFT | | |
1083 | ISPCCDC_COLPTN_Gr_Cy << ISPCCDC_COLPTN_CP1PLC3_SHIFT | | |
1084 | ISPCCDC_COLPTN_Gb_G << ISPCCDC_COLPTN_CP2PLC0_SHIFT | | |
1085 | ISPCCDC_COLPTN_B_Mg << ISPCCDC_COLPTN_CP2PLC1_SHIFT | | |
1086 | ISPCCDC_COLPTN_Gb_G << ISPCCDC_COLPTN_CP2PLC2_SHIFT | | |
1087 | ISPCCDC_COLPTN_B_Mg << ISPCCDC_COLPTN_CP2PLC3_SHIFT | | |
1088 | ISPCCDC_COLPTN_R_Ye << ISPCCDC_COLPTN_CP3PLC0_SHIFT | | |
1089 | ISPCCDC_COLPTN_Gr_Cy << ISPCCDC_COLPTN_CP3PLC1_SHIFT | | |
1090 | ISPCCDC_COLPTN_R_Ye << ISPCCDC_COLPTN_CP3PLC2_SHIFT | | |
1091 | ISPCCDC_COLPTN_Gr_Cy << ISPCCDC_COLPTN_CP3PLC3_SHIFT; | |
1092 | ||
1093 | static void ccdc_configure(struct isp_ccdc_device *ccdc) | |
1094 | { | |
1095 | struct isp_device *isp = to_isp_device(ccdc); | |
1096 | struct isp_parallel_platform_data *pdata = NULL; | |
1097 | struct v4l2_subdev *sensor; | |
1098 | struct v4l2_mbus_framefmt *format; | |
a64909b8 | 1099 | const struct v4l2_rect *crop; |
c09af044 MJ |
1100 | const struct isp_format_info *fmt_info; |
1101 | struct v4l2_subdev_format fmt_src; | |
1102 | unsigned int depth_out; | |
1103 | unsigned int depth_in = 0; | |
de1135d4 LP |
1104 | struct media_pad *pad; |
1105 | unsigned long flags; | |
c51364ca | 1106 | unsigned int bridge; |
c09af044 | 1107 | unsigned int shift; |
de1135d4 LP |
1108 | u32 syn_mode; |
1109 | u32 ccdc_pattern; | |
1110 | ||
1bddf1b3 | 1111 | pad = media_entity_remote_pad(&ccdc->pads[CCDC_PAD_SINK]); |
c09af044 MJ |
1112 | sensor = media_entity_to_v4l2_subdev(pad->entity); |
1113 | if (ccdc->input == CCDC_INPUT_PARALLEL) | |
de1135d4 LP |
1114 | pdata = &((struct isp_v4l2_subdevs_group *)sensor->host_priv) |
1115 | ->bus.parallel; | |
c09af044 | 1116 | |
2e8f0172 LP |
1117 | /* CCDC_PAD_SINK */ |
1118 | format = &ccdc->formats[CCDC_PAD_SINK]; | |
1119 | ||
c51364ca LP |
1120 | /* Compute the lane shifter shift value and enable the bridge when the |
1121 | * input format is YUV. | |
1122 | */ | |
c09af044 MJ |
1123 | fmt_src.pad = pad->index; |
1124 | fmt_src.which = V4L2_SUBDEV_FORMAT_ACTIVE; | |
1125 | if (!v4l2_subdev_call(sensor, pad, get_fmt, NULL, &fmt_src)) { | |
1126 | fmt_info = omap3isp_video_format_info(fmt_src.format.code); | |
1697e49a | 1127 | depth_in = fmt_info->width; |
de1135d4 LP |
1128 | } |
1129 | ||
2e8f0172 | 1130 | fmt_info = omap3isp_video_format_info(format->code); |
1697e49a | 1131 | depth_out = fmt_info->width; |
c09af044 | 1132 | shift = depth_in - depth_out; |
de1135d4 | 1133 | |
c51364ca LP |
1134 | if (fmt_info->code == V4L2_MBUS_FMT_YUYV8_2X8) |
1135 | bridge = ISPCTRL_PAR_BRIDGE_LENDIAN; | |
1136 | else if (fmt_info->code == V4L2_MBUS_FMT_UYVY8_2X8) | |
1137 | bridge = ISPCTRL_PAR_BRIDGE_BENDIAN; | |
1138 | else | |
1139 | bridge = ISPCTRL_PAR_BRIDGE_DISABLE; | |
de1135d4 | 1140 | |
c51364ca LP |
1141 | omap3isp_configure_bridge(isp, ccdc->input, pdata, shift, bridge); |
1142 | ||
1143 | ccdc_config_sync_if(ccdc, pdata, depth_out); | |
de1135d4 LP |
1144 | |
1145 | syn_mode = isp_reg_readl(isp, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_SYN_MODE); | |
1146 | ||
1147 | /* Use the raw, unprocessed data when writing to memory. The H3A and | |
1148 | * histogram modules are still fed with lens shading corrected data. | |
1149 | */ | |
1150 | syn_mode &= ~ISPCCDC_SYN_MODE_VP2SDR; | |
1151 | ||
1152 | if (ccdc->output & CCDC_OUTPUT_MEMORY) | |
1153 | syn_mode |= ISPCCDC_SYN_MODE_WEN; | |
1154 | else | |
1155 | syn_mode &= ~ISPCCDC_SYN_MODE_WEN; | |
1156 | ||
1157 | if (ccdc->output & CCDC_OUTPUT_RESIZER) | |
1158 | syn_mode |= ISPCCDC_SYN_MODE_SDR2RSZ; | |
1159 | else | |
1160 | syn_mode &= ~ISPCCDC_SYN_MODE_SDR2RSZ; | |
1161 | ||
de1135d4 LP |
1162 | /* Mosaic filter */ |
1163 | switch (format->code) { | |
1164 | case V4L2_MBUS_FMT_SRGGB10_1X10: | |
1165 | case V4L2_MBUS_FMT_SRGGB12_1X12: | |
1166 | ccdc_pattern = ccdc_srggb_pattern; | |
1167 | break; | |
1168 | case V4L2_MBUS_FMT_SBGGR10_1X10: | |
1169 | case V4L2_MBUS_FMT_SBGGR12_1X12: | |
1170 | ccdc_pattern = ccdc_sbggr_pattern; | |
1171 | break; | |
1172 | case V4L2_MBUS_FMT_SGBRG10_1X10: | |
1173 | case V4L2_MBUS_FMT_SGBRG12_1X12: | |
1174 | ccdc_pattern = ccdc_sgbrg_pattern; | |
1175 | break; | |
1176 | default: | |
1177 | /* Use GRBG */ | |
1178 | ccdc_pattern = ccdc_sgrbg_pattern; | |
1179 | break; | |
1180 | } | |
1181 | ccdc_config_imgattr(ccdc, ccdc_pattern); | |
1182 | ||
1183 | /* Generate VD0 on the last line of the image and VD1 on the | |
1184 | * 2/3 height line. | |
1185 | */ | |
1186 | isp_reg_writel(isp, ((format->height - 2) << ISPCCDC_VDINT_0_SHIFT) | | |
1187 | ((format->height * 2 / 3) << ISPCCDC_VDINT_1_SHIFT), | |
1188 | OMAP3_ISP_IOMEM_CCDC, ISPCCDC_VDINT); | |
1189 | ||
1190 | /* CCDC_PAD_SOURCE_OF */ | |
c51364ca | 1191 | format = &ccdc->formats[CCDC_PAD_SOURCE_OF]; |
a64909b8 | 1192 | crop = &ccdc->crop; |
de1135d4 | 1193 | |
a64909b8 LP |
1194 | isp_reg_writel(isp, (crop->left << ISPCCDC_HORZ_INFO_SPH_SHIFT) | |
1195 | ((crop->width - 1) << ISPCCDC_HORZ_INFO_NPH_SHIFT), | |
de1135d4 | 1196 | OMAP3_ISP_IOMEM_CCDC, ISPCCDC_HORZ_INFO); |
a64909b8 | 1197 | isp_reg_writel(isp, crop->top << ISPCCDC_VERT_START_SLV0_SHIFT, |
de1135d4 | 1198 | OMAP3_ISP_IOMEM_CCDC, ISPCCDC_VERT_START); |
a64909b8 | 1199 | isp_reg_writel(isp, (crop->height - 1) |
de1135d4 LP |
1200 | << ISPCCDC_VERT_LINES_NLV_SHIFT, |
1201 | OMAP3_ISP_IOMEM_CCDC, ISPCCDC_VERT_LINES); | |
1202 | ||
1203 | ccdc_config_outlineoffset(ccdc, ccdc->video_out.bpl_value, 0, 0); | |
1204 | ||
c51364ca LP |
1205 | /* The CCDC outputs data in UYVY order by default. Swap bytes to get |
1206 | * YUYV. | |
1207 | */ | |
1208 | if (format->code == V4L2_MBUS_FMT_YUYV8_1X16) | |
1209 | isp_reg_set(isp, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_CFG, | |
1210 | ISPCCDC_CFG_BSWD); | |
1211 | else | |
1212 | isp_reg_clr(isp, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_CFG, | |
1213 | ISPCCDC_CFG_BSWD); | |
1214 | ||
1215 | /* Use PACK8 mode for 1byte per pixel formats. */ | |
1216 | if (omap3isp_video_format_info(format->code)->width <= 8) | |
1217 | syn_mode |= ISPCCDC_SYN_MODE_PACK8; | |
1218 | else | |
1219 | syn_mode &= ~ISPCCDC_SYN_MODE_PACK8; | |
1220 | ||
1221 | isp_reg_writel(isp, syn_mode, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_SYN_MODE); | |
1222 | ||
de1135d4 LP |
1223 | /* CCDC_PAD_SOURCE_VP */ |
1224 | format = &ccdc->formats[CCDC_PAD_SOURCE_VP]; | |
1225 | ||
1226 | isp_reg_writel(isp, (0 << ISPCCDC_FMT_HORZ_FMTSPH_SHIFT) | | |
1227 | (format->width << ISPCCDC_FMT_HORZ_FMTLNH_SHIFT), | |
1228 | OMAP3_ISP_IOMEM_CCDC, ISPCCDC_FMT_HORZ); | |
1229 | isp_reg_writel(isp, (0 << ISPCCDC_FMT_VERT_FMTSLV_SHIFT) | | |
1230 | ((format->height + 1) << ISPCCDC_FMT_VERT_FMTLNV_SHIFT), | |
1231 | OMAP3_ISP_IOMEM_CCDC, ISPCCDC_FMT_VERT); | |
1232 | ||
1233 | isp_reg_writel(isp, (format->width << ISPCCDC_VP_OUT_HORZ_NUM_SHIFT) | | |
1234 | (format->height << ISPCCDC_VP_OUT_VERT_NUM_SHIFT), | |
1235 | OMAP3_ISP_IOMEM_CCDC, ISPCCDC_VP_OUT); | |
1236 | ||
c51364ca | 1237 | /* Lens shading correction. */ |
de1135d4 LP |
1238 | spin_lock_irqsave(&ccdc->lsc.req_lock, flags); |
1239 | if (ccdc->lsc.request == NULL) | |
1240 | goto unlock; | |
1241 | ||
1242 | WARN_ON(ccdc->lsc.active); | |
1243 | ||
1244 | /* Get last good LSC configuration. If it is not supported for | |
1245 | * the current active resolution discard it. | |
1246 | */ | |
1247 | if (ccdc->lsc.active == NULL && | |
1248 | __ccdc_lsc_configure(ccdc, ccdc->lsc.request) == 0) { | |
1249 | ccdc->lsc.active = ccdc->lsc.request; | |
1250 | } else { | |
1251 | list_add_tail(&ccdc->lsc.request->list, &ccdc->lsc.free_queue); | |
1252 | schedule_work(&ccdc->lsc.table_work); | |
1253 | } | |
1254 | ||
1255 | ccdc->lsc.request = NULL; | |
1256 | ||
1257 | unlock: | |
1258 | spin_unlock_irqrestore(&ccdc->lsc.req_lock, flags); | |
1259 | ||
1260 | ccdc_apply_controls(ccdc); | |
1261 | } | |
1262 | ||
1263 | static void __ccdc_enable(struct isp_ccdc_device *ccdc, int enable) | |
1264 | { | |
1265 | struct isp_device *isp = to_isp_device(ccdc); | |
1266 | ||
1267 | isp_reg_clr_set(isp, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_PCR, | |
1268 | ISPCCDC_PCR_EN, enable ? ISPCCDC_PCR_EN : 0); | |
1269 | } | |
1270 | ||
1271 | static int ccdc_disable(struct isp_ccdc_device *ccdc) | |
1272 | { | |
1273 | unsigned long flags; | |
1274 | int ret = 0; | |
1275 | ||
1276 | spin_lock_irqsave(&ccdc->lock, flags); | |
1277 | if (ccdc->state == ISP_PIPELINE_STREAM_CONTINUOUS) | |
1278 | ccdc->stopping = CCDC_STOP_REQUEST; | |
1279 | spin_unlock_irqrestore(&ccdc->lock, flags); | |
1280 | ||
1281 | ret = wait_event_timeout(ccdc->wait, | |
1282 | ccdc->stopping == CCDC_STOP_FINISHED, | |
1283 | msecs_to_jiffies(2000)); | |
1284 | if (ret == 0) { | |
1285 | ret = -ETIMEDOUT; | |
1286 | dev_warn(to_device(ccdc), "CCDC stop timeout!\n"); | |
1287 | } | |
1288 | ||
1289 | omap3isp_sbl_disable(to_isp_device(ccdc), OMAP3_ISP_SBL_CCDC_LSC_READ); | |
1290 | ||
1291 | mutex_lock(&ccdc->ioctl_lock); | |
1292 | ccdc_lsc_free_request(ccdc, ccdc->lsc.request); | |
1293 | ccdc->lsc.request = ccdc->lsc.active; | |
1294 | ccdc->lsc.active = NULL; | |
1295 | cancel_work_sync(&ccdc->lsc.table_work); | |
1296 | ccdc_lsc_free_queue(ccdc, &ccdc->lsc.free_queue); | |
1297 | mutex_unlock(&ccdc->ioctl_lock); | |
1298 | ||
1299 | ccdc->stopping = CCDC_STOP_NOT_REQUESTED; | |
1300 | ||
1301 | return ret > 0 ? 0 : ret; | |
1302 | } | |
1303 | ||
1304 | static void ccdc_enable(struct isp_ccdc_device *ccdc) | |
1305 | { | |
1306 | if (ccdc_lsc_is_configured(ccdc)) | |
1307 | __ccdc_lsc_enable(ccdc, 1); | |
1308 | __ccdc_enable(ccdc, 1); | |
1309 | } | |
1310 | ||
1311 | /* ----------------------------------------------------------------------------- | |
1312 | * Interrupt handling | |
1313 | */ | |
1314 | ||
1315 | /* | |
1316 | * ccdc_sbl_busy - Poll idle state of CCDC and related SBL memory write bits | |
1317 | * @ccdc: Pointer to ISP CCDC device. | |
1318 | * | |
1319 | * Returns zero if the CCDC is idle and the image has been written to | |
1320 | * memory, too. | |
1321 | */ | |
1322 | static int ccdc_sbl_busy(struct isp_ccdc_device *ccdc) | |
1323 | { | |
1324 | struct isp_device *isp = to_isp_device(ccdc); | |
1325 | ||
1326 | return omap3isp_ccdc_busy(ccdc) | |
1327 | | (isp_reg_readl(isp, OMAP3_ISP_IOMEM_SBL, ISPSBL_CCDC_WR_0) & | |
1328 | ISPSBL_CCDC_WR_0_DATA_READY) | |
1329 | | (isp_reg_readl(isp, OMAP3_ISP_IOMEM_SBL, ISPSBL_CCDC_WR_1) & | |
1330 | ISPSBL_CCDC_WR_0_DATA_READY) | |
1331 | | (isp_reg_readl(isp, OMAP3_ISP_IOMEM_SBL, ISPSBL_CCDC_WR_2) & | |
1332 | ISPSBL_CCDC_WR_0_DATA_READY) | |
1333 | | (isp_reg_readl(isp, OMAP3_ISP_IOMEM_SBL, ISPSBL_CCDC_WR_3) & | |
1334 | ISPSBL_CCDC_WR_0_DATA_READY); | |
1335 | } | |
1336 | ||
1337 | /* | |
1338 | * ccdc_sbl_wait_idle - Wait until the CCDC and related SBL are idle | |
1339 | * @ccdc: Pointer to ISP CCDC device. | |
1340 | * @max_wait: Max retry count in us for wait for idle/busy transition. | |
1341 | */ | |
1342 | static int ccdc_sbl_wait_idle(struct isp_ccdc_device *ccdc, | |
1343 | unsigned int max_wait) | |
1344 | { | |
1345 | unsigned int wait = 0; | |
1346 | ||
1347 | if (max_wait == 0) | |
1348 | max_wait = 10000; /* 10 ms */ | |
1349 | ||
1350 | for (wait = 0; wait <= max_wait; wait++) { | |
1351 | if (!ccdc_sbl_busy(ccdc)) | |
1352 | return 0; | |
1353 | ||
1354 | rmb(); | |
1355 | udelay(1); | |
1356 | } | |
1357 | ||
1358 | return -EBUSY; | |
1359 | } | |
1360 | ||
1361 | /* __ccdc_handle_stopping - Handle CCDC and/or LSC stopping sequence | |
1362 | * @ccdc: Pointer to ISP CCDC device. | |
1363 | * @event: Pointing which event trigger handler | |
1364 | * | |
2d4e9d1d | 1365 | * Return 1 when the event and stopping request combination is satisfied, |
de1135d4 LP |
1366 | * zero otherwise. |
1367 | */ | |
1368 | static int __ccdc_handle_stopping(struct isp_ccdc_device *ccdc, u32 event) | |
1369 | { | |
1370 | int rval = 0; | |
1371 | ||
1372 | switch ((ccdc->stopping & 3) | event) { | |
1373 | case CCDC_STOP_REQUEST | CCDC_EVENT_VD1: | |
1374 | if (ccdc->lsc.state != LSC_STATE_STOPPED) | |
1375 | __ccdc_lsc_enable(ccdc, 0); | |
1376 | __ccdc_enable(ccdc, 0); | |
1377 | ccdc->stopping = CCDC_STOP_EXECUTED; | |
1378 | return 1; | |
1379 | ||
1380 | case CCDC_STOP_EXECUTED | CCDC_EVENT_VD0: | |
1381 | ccdc->stopping |= CCDC_STOP_CCDC_FINISHED; | |
1382 | if (ccdc->lsc.state == LSC_STATE_STOPPED) | |
1383 | ccdc->stopping |= CCDC_STOP_LSC_FINISHED; | |
1384 | rval = 1; | |
1385 | break; | |
1386 | ||
1387 | case CCDC_STOP_EXECUTED | CCDC_EVENT_LSC_DONE: | |
1388 | ccdc->stopping |= CCDC_STOP_LSC_FINISHED; | |
1389 | rval = 1; | |
1390 | break; | |
1391 | ||
1392 | case CCDC_STOP_EXECUTED | CCDC_EVENT_VD1: | |
1393 | return 1; | |
1394 | } | |
1395 | ||
1396 | if (ccdc->stopping == CCDC_STOP_FINISHED) { | |
1397 | wake_up(&ccdc->wait); | |
1398 | rval = 1; | |
1399 | } | |
1400 | ||
1401 | return rval; | |
1402 | } | |
1403 | ||
1404 | static void ccdc_hs_vs_isr(struct isp_ccdc_device *ccdc) | |
1405 | { | |
bd0f2e6d | 1406 | struct isp_pipeline *pipe = to_isp_pipeline(&ccdc->subdev.entity); |
63ae37ea | 1407 | struct video_device *vdev = ccdc->subdev.devnode; |
de1135d4 LP |
1408 | struct v4l2_event event; |
1409 | ||
b43883d6 LP |
1410 | /* Frame number propagation */ |
1411 | atomic_inc(&pipe->frame_number); | |
1412 | ||
de1135d4 | 1413 | memset(&event, 0, sizeof(event)); |
69d232ae SA |
1414 | event.type = V4L2_EVENT_FRAME_SYNC; |
1415 | event.u.frame_sync.frame_sequence = atomic_read(&pipe->frame_number); | |
de1135d4 LP |
1416 | |
1417 | v4l2_event_queue(vdev, &event); | |
1418 | } | |
1419 | ||
1420 | /* | |
1421 | * ccdc_lsc_isr - Handle LSC events | |
1422 | * @ccdc: Pointer to ISP CCDC device. | |
1423 | * @events: LSC events | |
1424 | */ | |
1425 | static void ccdc_lsc_isr(struct isp_ccdc_device *ccdc, u32 events) | |
1426 | { | |
1427 | unsigned long flags; | |
1428 | ||
1429 | if (events & IRQ0STATUS_CCDC_LSC_PREF_ERR_IRQ) { | |
875e2e3e LP |
1430 | struct isp_pipeline *pipe = |
1431 | to_isp_pipeline(&ccdc->subdev.entity); | |
1432 | ||
de1135d4 | 1433 | ccdc_lsc_error_handler(ccdc); |
875e2e3e | 1434 | pipe->error = true; |
de1135d4 LP |
1435 | dev_dbg(to_device(ccdc), "lsc prefetch error\n"); |
1436 | } | |
1437 | ||
1438 | if (!(events & IRQ0STATUS_CCDC_LSC_DONE_IRQ)) | |
1439 | return; | |
1440 | ||
1441 | /* LSC_DONE interrupt occur, there are two cases | |
1442 | * 1. stopping for reconfiguration | |
1443 | * 2. stopping because of STREAM OFF command | |
1444 | */ | |
1445 | spin_lock_irqsave(&ccdc->lsc.req_lock, flags); | |
1446 | ||
1447 | if (ccdc->lsc.state == LSC_STATE_STOPPING) | |
1448 | ccdc->lsc.state = LSC_STATE_STOPPED; | |
1449 | ||
1450 | if (__ccdc_handle_stopping(ccdc, CCDC_EVENT_LSC_DONE)) | |
1451 | goto done; | |
1452 | ||
1453 | if (ccdc->lsc.state != LSC_STATE_RECONFIG) | |
1454 | goto done; | |
1455 | ||
1456 | /* LSC is in STOPPING state, change to the new state */ | |
1457 | ccdc->lsc.state = LSC_STATE_STOPPED; | |
1458 | ||
1459 | /* This is an exception. Start of frame and LSC_DONE interrupt | |
1460 | * have been received on the same time. Skip this event and wait | |
1461 | * for better times. | |
1462 | */ | |
1463 | if (events & IRQ0STATUS_HS_VS_IRQ) | |
1464 | goto done; | |
1465 | ||
1466 | /* The LSC engine is stopped at this point. Enable it if there's a | |
1467 | * pending request. | |
1468 | */ | |
1469 | if (ccdc->lsc.request == NULL) | |
1470 | goto done; | |
1471 | ||
1472 | ccdc_lsc_enable(ccdc); | |
1473 | ||
1474 | done: | |
1475 | spin_unlock_irqrestore(&ccdc->lsc.req_lock, flags); | |
1476 | } | |
1477 | ||
1478 | static int ccdc_isr_buffer(struct isp_ccdc_device *ccdc) | |
1479 | { | |
1480 | struct isp_pipeline *pipe = to_isp_pipeline(&ccdc->subdev.entity); | |
1481 | struct isp_device *isp = to_isp_device(ccdc); | |
1482 | struct isp_buffer *buffer; | |
1483 | int restart = 0; | |
1484 | ||
1485 | /* The CCDC generates VD0 interrupts even when disabled (the datasheet | |
1486 | * doesn't explicitly state if that's supposed to happen or not, so it | |
1487 | * can be considered as a hardware bug or as a feature, but we have to | |
1488 | * deal with it anyway). Disabling the CCDC when no buffer is available | |
1489 | * would thus not be enough, we need to handle the situation explicitly. | |
1490 | */ | |
1491 | if (list_empty(&ccdc->video_out.dmaqueue)) | |
1492 | goto done; | |
1493 | ||
1494 | /* We're in continuous mode, and memory writes were disabled due to a | |
1495 | * buffer underrun. Reenable them now that we have a buffer. The buffer | |
1496 | * address has been set in ccdc_video_queue. | |
1497 | */ | |
1498 | if (ccdc->state == ISP_PIPELINE_STREAM_CONTINUOUS && ccdc->underrun) { | |
1499 | restart = 1; | |
1500 | ccdc->underrun = 0; | |
1501 | goto done; | |
1502 | } | |
1503 | ||
1504 | if (ccdc_sbl_wait_idle(ccdc, 1000)) { | |
1505 | dev_info(isp->dev, "CCDC won't become idle!\n"); | |
9554b7db LP |
1506 | isp->crashed |= 1U << ccdc->subdev.entity.id; |
1507 | omap3isp_pipeline_cancel_stream(pipe); | |
de1135d4 LP |
1508 | goto done; |
1509 | } | |
1510 | ||
875e2e3e | 1511 | buffer = omap3isp_video_buffer_next(&ccdc->video_out); |
de1135d4 | 1512 | if (buffer != NULL) { |
21d8582d | 1513 | ccdc_set_outaddr(ccdc, buffer->dma); |
de1135d4 LP |
1514 | restart = 1; |
1515 | } | |
1516 | ||
1517 | pipe->state |= ISP_PIPELINE_IDLE_OUTPUT; | |
1518 | ||
1519 | if (ccdc->state == ISP_PIPELINE_STREAM_SINGLESHOT && | |
1520 | isp_pipeline_ready(pipe)) | |
1521 | omap3isp_pipeline_set_stream(pipe, | |
1522 | ISP_PIPELINE_STREAM_SINGLESHOT); | |
1523 | ||
1524 | done: | |
de1135d4 LP |
1525 | return restart; |
1526 | } | |
1527 | ||
1528 | /* | |
1529 | * ccdc_vd0_isr - Handle VD0 event | |
1530 | * @ccdc: Pointer to ISP CCDC device. | |
1531 | * | |
1532 | * Executes LSC deferred enablement before next frame starts. | |
1533 | */ | |
1534 | static void ccdc_vd0_isr(struct isp_ccdc_device *ccdc) | |
1535 | { | |
1536 | unsigned long flags; | |
1537 | int restart = 0; | |
1538 | ||
1539 | if (ccdc->output & CCDC_OUTPUT_MEMORY) | |
1540 | restart = ccdc_isr_buffer(ccdc); | |
1541 | ||
1542 | spin_lock_irqsave(&ccdc->lock, flags); | |
1543 | if (__ccdc_handle_stopping(ccdc, CCDC_EVENT_VD0)) { | |
1544 | spin_unlock_irqrestore(&ccdc->lock, flags); | |
1545 | return; | |
1546 | } | |
1547 | ||
1548 | if (!ccdc->shadow_update) | |
1549 | ccdc_apply_controls(ccdc); | |
1550 | spin_unlock_irqrestore(&ccdc->lock, flags); | |
1551 | ||
1552 | if (restart) | |
1553 | ccdc_enable(ccdc); | |
1554 | } | |
1555 | ||
1556 | /* | |
1557 | * ccdc_vd1_isr - Handle VD1 event | |
1558 | * @ccdc: Pointer to ISP CCDC device. | |
1559 | */ | |
1560 | static void ccdc_vd1_isr(struct isp_ccdc_device *ccdc) | |
1561 | { | |
1562 | unsigned long flags; | |
1563 | ||
1564 | spin_lock_irqsave(&ccdc->lsc.req_lock, flags); | |
1565 | ||
1566 | /* | |
1567 | * Depending on the CCDC pipeline state, CCDC stopping should be | |
1568 | * handled differently. In SINGLESHOT we emulate an internal CCDC | |
1569 | * stopping because the CCDC hw works only in continuous mode. | |
1570 | * When CONTINUOUS pipeline state is used and the CCDC writes it's | |
1571 | * data to memory the CCDC and LSC are stopped immediately but | |
1572 | * without change the CCDC stopping state machine. The CCDC | |
1573 | * stopping state machine should be used only when user request | |
1574 | * for stopping is received (SINGLESHOT is an exeption). | |
1575 | */ | |
1576 | switch (ccdc->state) { | |
1577 | case ISP_PIPELINE_STREAM_SINGLESHOT: | |
1578 | ccdc->stopping = CCDC_STOP_REQUEST; | |
1579 | break; | |
1580 | ||
1581 | case ISP_PIPELINE_STREAM_CONTINUOUS: | |
1582 | if (ccdc->output & CCDC_OUTPUT_MEMORY) { | |
1583 | if (ccdc->lsc.state != LSC_STATE_STOPPED) | |
1584 | __ccdc_lsc_enable(ccdc, 0); | |
1585 | __ccdc_enable(ccdc, 0); | |
1586 | } | |
1587 | break; | |
1588 | ||
1589 | case ISP_PIPELINE_STREAM_STOPPED: | |
1590 | break; | |
1591 | } | |
1592 | ||
1593 | if (__ccdc_handle_stopping(ccdc, CCDC_EVENT_VD1)) | |
1594 | goto done; | |
1595 | ||
1596 | if (ccdc->lsc.request == NULL) | |
1597 | goto done; | |
1598 | ||
1599 | /* | |
1600 | * LSC need to be reconfigured. Stop it here and on next LSC_DONE IRQ | |
1601 | * do the appropriate changes in registers | |
1602 | */ | |
1603 | if (ccdc->lsc.state == LSC_STATE_RUNNING) { | |
1604 | __ccdc_lsc_enable(ccdc, 0); | |
1605 | ccdc->lsc.state = LSC_STATE_RECONFIG; | |
1606 | goto done; | |
1607 | } | |
1608 | ||
1609 | /* LSC has been in STOPPED state, enable it */ | |
1610 | if (ccdc->lsc.state == LSC_STATE_STOPPED) | |
1611 | ccdc_lsc_enable(ccdc); | |
1612 | ||
1613 | done: | |
1614 | spin_unlock_irqrestore(&ccdc->lsc.req_lock, flags); | |
1615 | } | |
1616 | ||
1617 | /* | |
1618 | * omap3isp_ccdc_isr - Configure CCDC during interframe time. | |
1619 | * @ccdc: Pointer to ISP CCDC device. | |
1620 | * @events: CCDC events | |
1621 | */ | |
1622 | int omap3isp_ccdc_isr(struct isp_ccdc_device *ccdc, u32 events) | |
1623 | { | |
1624 | if (ccdc->state == ISP_PIPELINE_STREAM_STOPPED) | |
1625 | return 0; | |
1626 | ||
1627 | if (events & IRQ0STATUS_CCDC_VD1_IRQ) | |
1628 | ccdc_vd1_isr(ccdc); | |
1629 | ||
1630 | ccdc_lsc_isr(ccdc, events); | |
1631 | ||
1632 | if (events & IRQ0STATUS_CCDC_VD0_IRQ) | |
1633 | ccdc_vd0_isr(ccdc); | |
1634 | ||
1635 | if (events & IRQ0STATUS_HS_VS_IRQ) | |
1636 | ccdc_hs_vs_isr(ccdc); | |
1637 | ||
1638 | return 0; | |
1639 | } | |
1640 | ||
1641 | /* ----------------------------------------------------------------------------- | |
1642 | * ISP video operations | |
1643 | */ | |
1644 | ||
1645 | static int ccdc_video_queue(struct isp_video *video, struct isp_buffer *buffer) | |
1646 | { | |
1647 | struct isp_ccdc_device *ccdc = &video->isp->isp_ccdc; | |
1648 | ||
1649 | if (!(ccdc->output & CCDC_OUTPUT_MEMORY)) | |
1650 | return -ENODEV; | |
1651 | ||
21d8582d | 1652 | ccdc_set_outaddr(ccdc, buffer->dma); |
de1135d4 | 1653 | |
2d4e9d1d | 1654 | /* We now have a buffer queued on the output, restart the pipeline |
de1135d4 LP |
1655 | * on the next CCDC interrupt if running in continuous mode (or when |
1656 | * starting the stream). | |
1657 | */ | |
1658 | ccdc->underrun = 1; | |
1659 | ||
1660 | return 0; | |
1661 | } | |
1662 | ||
1663 | static const struct isp_video_operations ccdc_video_ops = { | |
1664 | .queue = ccdc_video_queue, | |
1665 | }; | |
1666 | ||
1667 | /* ----------------------------------------------------------------------------- | |
1668 | * V4L2 subdev operations | |
1669 | */ | |
1670 | ||
1671 | /* | |
1672 | * ccdc_ioctl - CCDC module private ioctl's | |
1673 | * @sd: ISP CCDC V4L2 subdevice | |
1674 | * @cmd: ioctl command | |
1675 | * @arg: ioctl argument | |
1676 | * | |
1677 | * Return 0 on success or a negative error code otherwise. | |
1678 | */ | |
1679 | static long ccdc_ioctl(struct v4l2_subdev *sd, unsigned int cmd, void *arg) | |
1680 | { | |
1681 | struct isp_ccdc_device *ccdc = v4l2_get_subdevdata(sd); | |
1682 | int ret; | |
1683 | ||
1684 | switch (cmd) { | |
1685 | case VIDIOC_OMAP3ISP_CCDC_CFG: | |
1686 | mutex_lock(&ccdc->ioctl_lock); | |
1687 | ret = ccdc_config(ccdc, arg); | |
1688 | mutex_unlock(&ccdc->ioctl_lock); | |
1689 | break; | |
1690 | ||
1691 | default: | |
1692 | return -ENOIOCTLCMD; | |
1693 | } | |
1694 | ||
1695 | return ret; | |
1696 | } | |
1697 | ||
1698 | static int ccdc_subscribe_event(struct v4l2_subdev *sd, struct v4l2_fh *fh, | |
55c85046 | 1699 | struct v4l2_event_subscription *sub) |
de1135d4 | 1700 | { |
69d232ae SA |
1701 | if (sub->type != V4L2_EVENT_FRAME_SYNC) |
1702 | return -EINVAL; | |
1703 | ||
1704 | /* line number is zero at frame start */ | |
1705 | if (sub->id != 0) | |
de1135d4 LP |
1706 | return -EINVAL; |
1707 | ||
c53c2549 | 1708 | return v4l2_event_subscribe(fh, sub, OMAP3ISP_CCDC_NEVENTS, NULL); |
de1135d4 LP |
1709 | } |
1710 | ||
1711 | static int ccdc_unsubscribe_event(struct v4l2_subdev *sd, struct v4l2_fh *fh, | |
55c85046 | 1712 | struct v4l2_event_subscription *sub) |
de1135d4 LP |
1713 | { |
1714 | return v4l2_event_unsubscribe(fh, sub); | |
1715 | } | |
1716 | ||
1717 | /* | |
1718 | * ccdc_set_stream - Enable/Disable streaming on the CCDC module | |
1719 | * @sd: ISP CCDC V4L2 subdevice | |
1720 | * @enable: Enable/disable stream | |
1721 | * | |
1722 | * When writing to memory, the CCDC hardware can't be enabled without a memory | |
1723 | * buffer to write to. As the s_stream operation is called in response to a | |
1724 | * STREAMON call without any buffer queued yet, just update the enabled field | |
1725 | * and return immediately. The CCDC will be enabled in ccdc_isr_buffer(). | |
1726 | * | |
1727 | * When not writing to memory enable the CCDC immediately. | |
1728 | */ | |
1729 | static int ccdc_set_stream(struct v4l2_subdev *sd, int enable) | |
1730 | { | |
1731 | struct isp_ccdc_device *ccdc = v4l2_get_subdevdata(sd); | |
1732 | struct isp_device *isp = to_isp_device(ccdc); | |
1733 | int ret = 0; | |
1734 | ||
1735 | if (ccdc->state == ISP_PIPELINE_STREAM_STOPPED) { | |
1736 | if (enable == ISP_PIPELINE_STREAM_STOPPED) | |
1737 | return 0; | |
1738 | ||
1739 | omap3isp_subclk_enable(isp, OMAP3_ISP_SUBCLK_CCDC); | |
1740 | isp_reg_set(isp, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_CFG, | |
1741 | ISPCCDC_CFG_VDLC); | |
1742 | ||
1743 | ccdc_configure(ccdc); | |
1744 | ||
1745 | /* TODO: Don't configure the video port if all of its output | |
1746 | * links are inactive. | |
1747 | */ | |
1748 | ccdc_config_vp(ccdc); | |
1749 | ccdc_enable_vp(ccdc, 1); | |
de1135d4 LP |
1750 | ccdc_print_status(ccdc); |
1751 | } | |
1752 | ||
1753 | switch (enable) { | |
1754 | case ISP_PIPELINE_STREAM_CONTINUOUS: | |
1755 | if (ccdc->output & CCDC_OUTPUT_MEMORY) | |
1756 | omap3isp_sbl_enable(isp, OMAP3_ISP_SBL_CCDC_WRITE); | |
1757 | ||
1758 | if (ccdc->underrun || !(ccdc->output & CCDC_OUTPUT_MEMORY)) | |
1759 | ccdc_enable(ccdc); | |
1760 | ||
1761 | ccdc->underrun = 0; | |
1762 | break; | |
1763 | ||
1764 | case ISP_PIPELINE_STREAM_SINGLESHOT: | |
1765 | if (ccdc->output & CCDC_OUTPUT_MEMORY && | |
1766 | ccdc->state != ISP_PIPELINE_STREAM_SINGLESHOT) | |
1767 | omap3isp_sbl_enable(isp, OMAP3_ISP_SBL_CCDC_WRITE); | |
1768 | ||
1769 | ccdc_enable(ccdc); | |
1770 | break; | |
1771 | ||
1772 | case ISP_PIPELINE_STREAM_STOPPED: | |
1773 | ret = ccdc_disable(ccdc); | |
1774 | if (ccdc->output & CCDC_OUTPUT_MEMORY) | |
1775 | omap3isp_sbl_disable(isp, OMAP3_ISP_SBL_CCDC_WRITE); | |
1776 | omap3isp_subclk_disable(isp, OMAP3_ISP_SUBCLK_CCDC); | |
1777 | ccdc->underrun = 0; | |
1778 | break; | |
1779 | } | |
1780 | ||
1781 | ccdc->state = enable; | |
1782 | return ret; | |
1783 | } | |
1784 | ||
1785 | static struct v4l2_mbus_framefmt * | |
1786 | __ccdc_get_format(struct isp_ccdc_device *ccdc, struct v4l2_subdev_fh *fh, | |
1787 | unsigned int pad, enum v4l2_subdev_format_whence which) | |
1788 | { | |
1789 | if (which == V4L2_SUBDEV_FORMAT_TRY) | |
1790 | return v4l2_subdev_get_try_format(fh, pad); | |
1791 | else | |
1792 | return &ccdc->formats[pad]; | |
1793 | } | |
1794 | ||
a64909b8 LP |
1795 | static struct v4l2_rect * |
1796 | __ccdc_get_crop(struct isp_ccdc_device *ccdc, struct v4l2_subdev_fh *fh, | |
1797 | enum v4l2_subdev_format_whence which) | |
1798 | { | |
1799 | if (which == V4L2_SUBDEV_FORMAT_TRY) | |
1800 | return v4l2_subdev_get_try_crop(fh, CCDC_PAD_SOURCE_OF); | |
1801 | else | |
1802 | return &ccdc->crop; | |
1803 | } | |
1804 | ||
de1135d4 LP |
1805 | /* |
1806 | * ccdc_try_format - Try video format on a pad | |
1807 | * @ccdc: ISP CCDC device | |
1808 | * @fh : V4L2 subdev file handle | |
1809 | * @pad: Pad number | |
1810 | * @fmt: Format | |
1811 | */ | |
1812 | static void | |
1813 | ccdc_try_format(struct isp_ccdc_device *ccdc, struct v4l2_subdev_fh *fh, | |
1814 | unsigned int pad, struct v4l2_mbus_framefmt *fmt, | |
1815 | enum v4l2_subdev_format_whence which) | |
1816 | { | |
de1135d4 | 1817 | const struct isp_format_info *info; |
c51364ca | 1818 | enum v4l2_mbus_pixelcode pixelcode; |
de1135d4 LP |
1819 | unsigned int width = fmt->width; |
1820 | unsigned int height = fmt->height; | |
a64909b8 | 1821 | struct v4l2_rect *crop; |
de1135d4 LP |
1822 | unsigned int i; |
1823 | ||
1824 | switch (pad) { | |
1825 | case CCDC_PAD_SINK: | |
de1135d4 LP |
1826 | for (i = 0; i < ARRAY_SIZE(ccdc_fmts); i++) { |
1827 | if (fmt->code == ccdc_fmts[i]) | |
1828 | break; | |
1829 | } | |
1830 | ||
1831 | /* If not found, use SGRBG10 as default */ | |
1832 | if (i >= ARRAY_SIZE(ccdc_fmts)) | |
1833 | fmt->code = V4L2_MBUS_FMT_SGRBG10_1X10; | |
1834 | ||
1835 | /* Clamp the input size. */ | |
1836 | fmt->width = clamp_t(u32, width, 32, 4096); | |
1837 | fmt->height = clamp_t(u32, height, 32, 4096); | |
1838 | break; | |
1839 | ||
1840 | case CCDC_PAD_SOURCE_OF: | |
c51364ca LP |
1841 | pixelcode = fmt->code; |
1842 | *fmt = *__ccdc_get_format(ccdc, fh, CCDC_PAD_SINK, which); | |
1843 | ||
1844 | /* YUV formats are converted from 2X8 to 1X16 by the bridge and | |
1845 | * can be byte-swapped. | |
1846 | */ | |
1847 | if (fmt->code == V4L2_MBUS_FMT_YUYV8_2X8 || | |
1848 | fmt->code == V4L2_MBUS_FMT_UYVY8_2X8) { | |
1849 | /* Use the user requested format if YUV. */ | |
1850 | if (pixelcode == V4L2_MBUS_FMT_YUYV8_2X8 || | |
1851 | pixelcode == V4L2_MBUS_FMT_UYVY8_2X8 || | |
1852 | pixelcode == V4L2_MBUS_FMT_YUYV8_1X16 || | |
1853 | pixelcode == V4L2_MBUS_FMT_UYVY8_1X16) | |
1854 | fmt->code = pixelcode; | |
1855 | ||
1856 | if (fmt->code == V4L2_MBUS_FMT_YUYV8_2X8) | |
1857 | fmt->code = V4L2_MBUS_FMT_YUYV8_1X16; | |
1858 | else if (fmt->code == V4L2_MBUS_FMT_UYVY8_2X8) | |
1859 | fmt->code = V4L2_MBUS_FMT_UYVY8_1X16; | |
1860 | } | |
de1135d4 | 1861 | |
a64909b8 LP |
1862 | /* Hardcode the output size to the crop rectangle size. */ |
1863 | crop = __ccdc_get_crop(ccdc, fh, which); | |
1864 | fmt->width = crop->width; | |
1865 | fmt->height = crop->height; | |
de1135d4 LP |
1866 | break; |
1867 | ||
1868 | case CCDC_PAD_SOURCE_VP: | |
c51364ca | 1869 | *fmt = *__ccdc_get_format(ccdc, fh, CCDC_PAD_SINK, which); |
de1135d4 LP |
1870 | |
1871 | /* The video port interface truncates the data to 10 bits. */ | |
1872 | info = omap3isp_video_format_info(fmt->code); | |
1873 | fmt->code = info->truncated; | |
1874 | ||
c51364ca LP |
1875 | /* YUV formats are not supported by the video port. */ |
1876 | if (fmt->code == V4L2_MBUS_FMT_YUYV8_2X8 || | |
1877 | fmt->code == V4L2_MBUS_FMT_UYVY8_2X8) | |
1878 | fmt->code = 0; | |
1879 | ||
de1135d4 LP |
1880 | /* The number of lines that can be clocked out from the video |
1881 | * port output must be at least one line less than the number | |
1882 | * of input lines. | |
1883 | */ | |
1884 | fmt->width = clamp_t(u32, width, 32, fmt->width); | |
1885 | fmt->height = clamp_t(u32, height, 32, fmt->height - 1); | |
1886 | break; | |
1887 | } | |
1888 | ||
1889 | /* Data is written to memory unpacked, each 10-bit or 12-bit pixel is | |
1890 | * stored on 2 bytes. | |
1891 | */ | |
1892 | fmt->colorspace = V4L2_COLORSPACE_SRGB; | |
1893 | fmt->field = V4L2_FIELD_NONE; | |
1894 | } | |
1895 | ||
a64909b8 LP |
1896 | /* |
1897 | * ccdc_try_crop - Validate a crop rectangle | |
1898 | * @ccdc: ISP CCDC device | |
1899 | * @sink: format on the sink pad | |
1900 | * @crop: crop rectangle to be validated | |
1901 | */ | |
1902 | static void ccdc_try_crop(struct isp_ccdc_device *ccdc, | |
1903 | const struct v4l2_mbus_framefmt *sink, | |
1904 | struct v4l2_rect *crop) | |
1905 | { | |
1906 | const struct isp_format_info *info; | |
1907 | unsigned int max_width; | |
1908 | ||
1909 | /* For Bayer formats, restrict left/top and width/height to even values | |
1910 | * to keep the Bayer pattern. | |
1911 | */ | |
1912 | info = omap3isp_video_format_info(sink->code); | |
1913 | if (info->flavor != V4L2_MBUS_FMT_Y8_1X8) { | |
1914 | crop->left &= ~1; | |
1915 | crop->top &= ~1; | |
1916 | } | |
1917 | ||
1918 | crop->left = clamp_t(u32, crop->left, 0, sink->width - CCDC_MIN_WIDTH); | |
1919 | crop->top = clamp_t(u32, crop->top, 0, sink->height - CCDC_MIN_HEIGHT); | |
1920 | ||
1921 | /* The data formatter truncates the number of horizontal output pixels | |
1922 | * to a multiple of 16. To avoid clipping data, allow callers to request | |
1923 | * an output size bigger than the input size up to the nearest multiple | |
1924 | * of 16. | |
1925 | */ | |
1926 | max_width = (sink->width - crop->left + 15) & ~15; | |
1927 | crop->width = clamp_t(u32, crop->width, CCDC_MIN_WIDTH, max_width) | |
1928 | & ~15; | |
1929 | crop->height = clamp_t(u32, crop->height, CCDC_MIN_HEIGHT, | |
1930 | sink->height - crop->top); | |
1931 | ||
1932 | /* Odd width/height values don't make sense for Bayer formats. */ | |
1933 | if (info->flavor != V4L2_MBUS_FMT_Y8_1X8) { | |
1934 | crop->width &= ~1; | |
1935 | crop->height &= ~1; | |
1936 | } | |
1937 | } | |
1938 | ||
de1135d4 LP |
1939 | /* |
1940 | * ccdc_enum_mbus_code - Handle pixel format enumeration | |
1941 | * @sd : pointer to v4l2 subdev structure | |
1942 | * @fh : V4L2 subdev file handle | |
1943 | * @code : pointer to v4l2_subdev_mbus_code_enum structure | |
1944 | * return -EINVAL or zero on success | |
1945 | */ | |
1946 | static int ccdc_enum_mbus_code(struct v4l2_subdev *sd, | |
1947 | struct v4l2_subdev_fh *fh, | |
1948 | struct v4l2_subdev_mbus_code_enum *code) | |
1949 | { | |
1950 | struct isp_ccdc_device *ccdc = v4l2_get_subdevdata(sd); | |
1951 | struct v4l2_mbus_framefmt *format; | |
1952 | ||
1953 | switch (code->pad) { | |
1954 | case CCDC_PAD_SINK: | |
1955 | if (code->index >= ARRAY_SIZE(ccdc_fmts)) | |
1956 | return -EINVAL; | |
1957 | ||
1958 | code->code = ccdc_fmts[code->index]; | |
1959 | break; | |
1960 | ||
1961 | case CCDC_PAD_SOURCE_OF: | |
c51364ca LP |
1962 | format = __ccdc_get_format(ccdc, fh, code->pad, |
1963 | V4L2_SUBDEV_FORMAT_TRY); | |
1964 | ||
1965 | if (format->code == V4L2_MBUS_FMT_YUYV8_2X8 || | |
1966 | format->code == V4L2_MBUS_FMT_UYVY8_2X8) { | |
1967 | /* In YUV mode the CCDC can swap bytes. */ | |
1968 | if (code->index == 0) | |
1969 | code->code = V4L2_MBUS_FMT_YUYV8_1X16; | |
1970 | else if (code->index == 1) | |
1971 | code->code = V4L2_MBUS_FMT_UYVY8_1X16; | |
1972 | else | |
1973 | return -EINVAL; | |
1974 | } else { | |
1975 | /* In raw mode, no configurable format confversion is | |
1976 | * available. | |
1977 | */ | |
1978 | if (code->index == 0) | |
1979 | code->code = format->code; | |
1980 | else | |
1981 | return -EINVAL; | |
1982 | } | |
1983 | break; | |
1984 | ||
de1135d4 | 1985 | case CCDC_PAD_SOURCE_VP: |
c51364ca LP |
1986 | /* The CCDC supports no configurable format conversion |
1987 | * compatible with the video port. Enumerate a single output | |
1988 | * format code. | |
1989 | */ | |
de1135d4 LP |
1990 | if (code->index != 0) |
1991 | return -EINVAL; | |
1992 | ||
c51364ca | 1993 | format = __ccdc_get_format(ccdc, fh, code->pad, |
de1135d4 LP |
1994 | V4L2_SUBDEV_FORMAT_TRY); |
1995 | ||
c51364ca LP |
1996 | /* A pixel code equal to 0 means that the video port doesn't |
1997 | * support the input format. Don't enumerate any pixel code. | |
1998 | */ | |
1999 | if (format->code == 0) | |
2000 | return -EINVAL; | |
2001 | ||
de1135d4 LP |
2002 | code->code = format->code; |
2003 | break; | |
2004 | ||
2005 | default: | |
2006 | return -EINVAL; | |
2007 | } | |
2008 | ||
2009 | return 0; | |
2010 | } | |
2011 | ||
2012 | static int ccdc_enum_frame_size(struct v4l2_subdev *sd, | |
2013 | struct v4l2_subdev_fh *fh, | |
2014 | struct v4l2_subdev_frame_size_enum *fse) | |
2015 | { | |
2016 | struct isp_ccdc_device *ccdc = v4l2_get_subdevdata(sd); | |
2017 | struct v4l2_mbus_framefmt format; | |
2018 | ||
2019 | if (fse->index != 0) | |
2020 | return -EINVAL; | |
2021 | ||
2022 | format.code = fse->code; | |
2023 | format.width = 1; | |
2024 | format.height = 1; | |
2025 | ccdc_try_format(ccdc, fh, fse->pad, &format, V4L2_SUBDEV_FORMAT_TRY); | |
2026 | fse->min_width = format.width; | |
2027 | fse->min_height = format.height; | |
2028 | ||
2029 | if (format.code != fse->code) | |
2030 | return -EINVAL; | |
2031 | ||
2032 | format.code = fse->code; | |
2033 | format.width = -1; | |
2034 | format.height = -1; | |
2035 | ccdc_try_format(ccdc, fh, fse->pad, &format, V4L2_SUBDEV_FORMAT_TRY); | |
2036 | fse->max_width = format.width; | |
2037 | fse->max_height = format.height; | |
2038 | ||
2039 | return 0; | |
2040 | } | |
2041 | ||
a64909b8 LP |
2042 | /* |
2043 | * ccdc_get_selection - Retrieve a selection rectangle on a pad | |
2044 | * @sd: ISP CCDC V4L2 subdevice | |
2045 | * @fh: V4L2 subdev file handle | |
2046 | * @sel: Selection rectangle | |
2047 | * | |
2048 | * The only supported rectangles are the crop rectangles on the output formatter | |
2049 | * source pad. | |
2050 | * | |
2051 | * Return 0 on success or a negative error code otherwise. | |
2052 | */ | |
2053 | static int ccdc_get_selection(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh, | |
2054 | struct v4l2_subdev_selection *sel) | |
2055 | { | |
2056 | struct isp_ccdc_device *ccdc = v4l2_get_subdevdata(sd); | |
2057 | struct v4l2_mbus_framefmt *format; | |
2058 | ||
2059 | if (sel->pad != CCDC_PAD_SOURCE_OF) | |
2060 | return -EINVAL; | |
2061 | ||
2062 | switch (sel->target) { | |
5689b288 | 2063 | case V4L2_SEL_TGT_CROP_BOUNDS: |
a64909b8 LP |
2064 | sel->r.left = 0; |
2065 | sel->r.top = 0; | |
2066 | sel->r.width = INT_MAX; | |
2067 | sel->r.height = INT_MAX; | |
2068 | ||
2069 | format = __ccdc_get_format(ccdc, fh, CCDC_PAD_SINK, sel->which); | |
2070 | ccdc_try_crop(ccdc, format, &sel->r); | |
2071 | break; | |
2072 | ||
5689b288 | 2073 | case V4L2_SEL_TGT_CROP: |
a64909b8 LP |
2074 | sel->r = *__ccdc_get_crop(ccdc, fh, sel->which); |
2075 | break; | |
2076 | ||
2077 | default: | |
2078 | return -EINVAL; | |
2079 | } | |
2080 | ||
2081 | return 0; | |
2082 | } | |
2083 | ||
2084 | /* | |
2085 | * ccdc_set_selection - Set a selection rectangle on a pad | |
2086 | * @sd: ISP CCDC V4L2 subdevice | |
2087 | * @fh: V4L2 subdev file handle | |
2088 | * @sel: Selection rectangle | |
2089 | * | |
2090 | * The only supported rectangle is the actual crop rectangle on the output | |
2091 | * formatter source pad. | |
2092 | * | |
2093 | * Return 0 on success or a negative error code otherwise. | |
2094 | */ | |
2095 | static int ccdc_set_selection(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh, | |
2096 | struct v4l2_subdev_selection *sel) | |
2097 | { | |
2098 | struct isp_ccdc_device *ccdc = v4l2_get_subdevdata(sd); | |
2099 | struct v4l2_mbus_framefmt *format; | |
2100 | ||
5689b288 | 2101 | if (sel->target != V4L2_SEL_TGT_CROP || |
a64909b8 LP |
2102 | sel->pad != CCDC_PAD_SOURCE_OF) |
2103 | return -EINVAL; | |
2104 | ||
2105 | /* The crop rectangle can't be changed while streaming. */ | |
2106 | if (ccdc->state != ISP_PIPELINE_STREAM_STOPPED) | |
2107 | return -EBUSY; | |
2108 | ||
2109 | /* Modifying the crop rectangle always changes the format on the source | |
2110 | * pad. If the KEEP_CONFIG flag is set, just return the current crop | |
2111 | * rectangle. | |
2112 | */ | |
563df3d0 | 2113 | if (sel->flags & V4L2_SEL_FLAG_KEEP_CONFIG) { |
a64909b8 LP |
2114 | sel->r = *__ccdc_get_crop(ccdc, fh, sel->which); |
2115 | return 0; | |
2116 | } | |
2117 | ||
2118 | format = __ccdc_get_format(ccdc, fh, CCDC_PAD_SINK, sel->which); | |
2119 | ccdc_try_crop(ccdc, format, &sel->r); | |
2120 | *__ccdc_get_crop(ccdc, fh, sel->which) = sel->r; | |
2121 | ||
2122 | /* Update the source format. */ | |
2123 | format = __ccdc_get_format(ccdc, fh, CCDC_PAD_SOURCE_OF, sel->which); | |
2124 | ccdc_try_format(ccdc, fh, CCDC_PAD_SOURCE_OF, format, sel->which); | |
2125 | ||
2126 | return 0; | |
2127 | } | |
2128 | ||
de1135d4 LP |
2129 | /* |
2130 | * ccdc_get_format - Retrieve the video format on a pad | |
2131 | * @sd : ISP CCDC V4L2 subdevice | |
2132 | * @fh : V4L2 subdev file handle | |
2133 | * @fmt: Format | |
2134 | * | |
2135 | * Return 0 on success or -EINVAL if the pad is invalid or doesn't correspond | |
2136 | * to the format type. | |
2137 | */ | |
2138 | static int ccdc_get_format(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh, | |
2139 | struct v4l2_subdev_format *fmt) | |
2140 | { | |
2141 | struct isp_ccdc_device *ccdc = v4l2_get_subdevdata(sd); | |
2142 | struct v4l2_mbus_framefmt *format; | |
2143 | ||
2144 | format = __ccdc_get_format(ccdc, fh, fmt->pad, fmt->which); | |
2145 | if (format == NULL) | |
2146 | return -EINVAL; | |
2147 | ||
2148 | fmt->format = *format; | |
2149 | return 0; | |
2150 | } | |
2151 | ||
2152 | /* | |
2153 | * ccdc_set_format - Set the video format on a pad | |
2154 | * @sd : ISP CCDC V4L2 subdevice | |
2155 | * @fh : V4L2 subdev file handle | |
2156 | * @fmt: Format | |
2157 | * | |
2158 | * Return 0 on success or -EINVAL if the pad is invalid or doesn't correspond | |
2159 | * to the format type. | |
2160 | */ | |
2161 | static int ccdc_set_format(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh, | |
2162 | struct v4l2_subdev_format *fmt) | |
2163 | { | |
2164 | struct isp_ccdc_device *ccdc = v4l2_get_subdevdata(sd); | |
2165 | struct v4l2_mbus_framefmt *format; | |
a64909b8 | 2166 | struct v4l2_rect *crop; |
de1135d4 LP |
2167 | |
2168 | format = __ccdc_get_format(ccdc, fh, fmt->pad, fmt->which); | |
2169 | if (format == NULL) | |
2170 | return -EINVAL; | |
2171 | ||
2172 | ccdc_try_format(ccdc, fh, fmt->pad, &fmt->format, fmt->which); | |
2173 | *format = fmt->format; | |
2174 | ||
2175 | /* Propagate the format from sink to source */ | |
2176 | if (fmt->pad == CCDC_PAD_SINK) { | |
a64909b8 LP |
2177 | /* Reset the crop rectangle. */ |
2178 | crop = __ccdc_get_crop(ccdc, fh, fmt->which); | |
2179 | crop->left = 0; | |
2180 | crop->top = 0; | |
2181 | crop->width = fmt->format.width; | |
2182 | crop->height = fmt->format.height; | |
2183 | ||
2184 | ccdc_try_crop(ccdc, &fmt->format, crop); | |
2185 | ||
2186 | /* Update the source formats. */ | |
de1135d4 LP |
2187 | format = __ccdc_get_format(ccdc, fh, CCDC_PAD_SOURCE_OF, |
2188 | fmt->which); | |
2189 | *format = fmt->format; | |
2190 | ccdc_try_format(ccdc, fh, CCDC_PAD_SOURCE_OF, format, | |
2191 | fmt->which); | |
2192 | ||
2193 | format = __ccdc_get_format(ccdc, fh, CCDC_PAD_SOURCE_VP, | |
2194 | fmt->which); | |
2195 | *format = fmt->format; | |
2196 | ccdc_try_format(ccdc, fh, CCDC_PAD_SOURCE_VP, format, | |
2197 | fmt->which); | |
2198 | } | |
2199 | ||
2200 | return 0; | |
2201 | } | |
2202 | ||
a6d7a62d SA |
2203 | /* |
2204 | * Decide whether desired output pixel code can be obtained with | |
2205 | * the lane shifter by shifting the input pixel code. | |
2206 | * @in: input pixelcode to shifter | |
2207 | * @out: output pixelcode from shifter | |
2208 | * @additional_shift: # of bits the sensor's LSB is offset from CAMEXT[0] | |
2209 | * | |
2210 | * return true if the combination is possible | |
2211 | * return false otherwise | |
2212 | */ | |
2213 | static bool ccdc_is_shiftable(enum v4l2_mbus_pixelcode in, | |
2214 | enum v4l2_mbus_pixelcode out, | |
2215 | unsigned int additional_shift) | |
2216 | { | |
2217 | const struct isp_format_info *in_info, *out_info; | |
2218 | ||
2219 | if (in == out) | |
2220 | return true; | |
2221 | ||
2222 | in_info = omap3isp_video_format_info(in); | |
2223 | out_info = omap3isp_video_format_info(out); | |
2224 | ||
2225 | if ((in_info->flavor == 0) || (out_info->flavor == 0)) | |
2226 | return false; | |
2227 | ||
2228 | if (in_info->flavor != out_info->flavor) | |
2229 | return false; | |
2230 | ||
1697e49a | 2231 | return in_info->width - out_info->width + additional_shift <= 6; |
a6d7a62d SA |
2232 | } |
2233 | ||
2234 | static int ccdc_link_validate(struct v4l2_subdev *sd, | |
2235 | struct media_link *link, | |
2236 | struct v4l2_subdev_format *source_fmt, | |
2237 | struct v4l2_subdev_format *sink_fmt) | |
2238 | { | |
2239 | struct isp_ccdc_device *ccdc = v4l2_get_subdevdata(sd); | |
2240 | unsigned long parallel_shift; | |
2241 | ||
2242 | /* Check if the two ends match */ | |
2243 | if (source_fmt->format.width != sink_fmt->format.width || | |
2244 | source_fmt->format.height != sink_fmt->format.height) | |
2245 | return -EPIPE; | |
2246 | ||
2247 | /* We've got a parallel sensor here. */ | |
2248 | if (ccdc->input == CCDC_INPUT_PARALLEL) { | |
2249 | struct isp_parallel_platform_data *pdata = | |
2250 | &((struct isp_v4l2_subdevs_group *) | |
2251 | media_entity_to_v4l2_subdev(link->source->entity) | |
2252 | ->host_priv)->bus.parallel; | |
2253 | parallel_shift = pdata->data_lane_shift * 2; | |
2254 | } else { | |
2255 | parallel_shift = 0; | |
2256 | } | |
2257 | ||
2258 | /* Lane shifter may be used to drop bits on CCDC sink pad */ | |
2259 | if (!ccdc_is_shiftable(source_fmt->format.code, | |
2260 | sink_fmt->format.code, parallel_shift)) | |
2261 | return -EPIPE; | |
2262 | ||
2263 | return 0; | |
2264 | } | |
2265 | ||
de1135d4 LP |
2266 | /* |
2267 | * ccdc_init_formats - Initialize formats on all pads | |
2268 | * @sd: ISP CCDC V4L2 subdevice | |
2269 | * @fh: V4L2 subdev file handle | |
2270 | * | |
2271 | * Initialize all pad formats with default values. If fh is not NULL, try | |
2272 | * formats are initialized on the file handle. Otherwise active formats are | |
2273 | * initialized on the device. | |
2274 | */ | |
2275 | static int ccdc_init_formats(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh) | |
2276 | { | |
2277 | struct v4l2_subdev_format format; | |
2278 | ||
2279 | memset(&format, 0, sizeof(format)); | |
2280 | format.pad = CCDC_PAD_SINK; | |
2281 | format.which = fh ? V4L2_SUBDEV_FORMAT_TRY : V4L2_SUBDEV_FORMAT_ACTIVE; | |
2282 | format.format.code = V4L2_MBUS_FMT_SGRBG10_1X10; | |
2283 | format.format.width = 4096; | |
2284 | format.format.height = 4096; | |
2285 | ccdc_set_format(sd, fh, &format); | |
2286 | ||
2287 | return 0; | |
2288 | } | |
2289 | ||
2290 | /* V4L2 subdev core operations */ | |
2291 | static const struct v4l2_subdev_core_ops ccdc_v4l2_core_ops = { | |
2292 | .ioctl = ccdc_ioctl, | |
2293 | .subscribe_event = ccdc_subscribe_event, | |
2294 | .unsubscribe_event = ccdc_unsubscribe_event, | |
2295 | }; | |
2296 | ||
2297 | /* V4L2 subdev video operations */ | |
2298 | static const struct v4l2_subdev_video_ops ccdc_v4l2_video_ops = { | |
2299 | .s_stream = ccdc_set_stream, | |
2300 | }; | |
2301 | ||
2302 | /* V4L2 subdev pad operations */ | |
2303 | static const struct v4l2_subdev_pad_ops ccdc_v4l2_pad_ops = { | |
2304 | .enum_mbus_code = ccdc_enum_mbus_code, | |
2305 | .enum_frame_size = ccdc_enum_frame_size, | |
2306 | .get_fmt = ccdc_get_format, | |
2307 | .set_fmt = ccdc_set_format, | |
a64909b8 LP |
2308 | .get_selection = ccdc_get_selection, |
2309 | .set_selection = ccdc_set_selection, | |
a6d7a62d | 2310 | .link_validate = ccdc_link_validate, |
de1135d4 LP |
2311 | }; |
2312 | ||
2313 | /* V4L2 subdev operations */ | |
2314 | static const struct v4l2_subdev_ops ccdc_v4l2_ops = { | |
2315 | .core = &ccdc_v4l2_core_ops, | |
2316 | .video = &ccdc_v4l2_video_ops, | |
2317 | .pad = &ccdc_v4l2_pad_ops, | |
2318 | }; | |
2319 | ||
2320 | /* V4L2 subdev internal operations */ | |
2321 | static const struct v4l2_subdev_internal_ops ccdc_v4l2_internal_ops = { | |
2322 | .open = ccdc_init_formats, | |
2323 | }; | |
2324 | ||
2325 | /* ----------------------------------------------------------------------------- | |
2326 | * Media entity operations | |
2327 | */ | |
2328 | ||
2329 | /* | |
2330 | * ccdc_link_setup - Setup CCDC connections | |
2331 | * @entity: CCDC media entity | |
2332 | * @local: Pad at the local end of the link | |
2333 | * @remote: Pad at the remote end of the link | |
2334 | * @flags: Link flags | |
2335 | * | |
2336 | * return -EINVAL or zero on success | |
2337 | */ | |
2338 | static int ccdc_link_setup(struct media_entity *entity, | |
2339 | const struct media_pad *local, | |
2340 | const struct media_pad *remote, u32 flags) | |
2341 | { | |
2342 | struct v4l2_subdev *sd = media_entity_to_v4l2_subdev(entity); | |
2343 | struct isp_ccdc_device *ccdc = v4l2_get_subdevdata(sd); | |
2344 | struct isp_device *isp = to_isp_device(ccdc); | |
2345 | ||
2346 | switch (local->index | media_entity_type(remote->entity)) { | |
2347 | case CCDC_PAD_SINK | MEDIA_ENT_T_V4L2_SUBDEV: | |
2348 | /* Read from the sensor (parallel interface), CCP2, CSI2a or | |
2349 | * CSI2c. | |
2350 | */ | |
2351 | if (!(flags & MEDIA_LNK_FL_ENABLED)) { | |
2352 | ccdc->input = CCDC_INPUT_NONE; | |
2353 | break; | |
2354 | } | |
2355 | ||
2356 | if (ccdc->input != CCDC_INPUT_NONE) | |
2357 | return -EBUSY; | |
2358 | ||
2359 | if (remote->entity == &isp->isp_ccp2.subdev.entity) | |
2360 | ccdc->input = CCDC_INPUT_CCP2B; | |
2361 | else if (remote->entity == &isp->isp_csi2a.subdev.entity) | |
2362 | ccdc->input = CCDC_INPUT_CSI2A; | |
2363 | else if (remote->entity == &isp->isp_csi2c.subdev.entity) | |
2364 | ccdc->input = CCDC_INPUT_CSI2C; | |
2365 | else | |
2366 | ccdc->input = CCDC_INPUT_PARALLEL; | |
2367 | ||
2368 | break; | |
2369 | ||
2370 | /* | |
2371 | * The ISP core doesn't support pipelines with multiple video outputs. | |
2372 | * Revisit this when it will be implemented, and return -EBUSY for now. | |
2373 | */ | |
2374 | ||
2375 | case CCDC_PAD_SOURCE_VP | MEDIA_ENT_T_V4L2_SUBDEV: | |
2376 | /* Write to preview engine, histogram and H3A. When none of | |
2377 | * those links are active, the video port can be disabled. | |
2378 | */ | |
2379 | if (flags & MEDIA_LNK_FL_ENABLED) { | |
2380 | if (ccdc->output & ~CCDC_OUTPUT_PREVIEW) | |
2381 | return -EBUSY; | |
2382 | ccdc->output |= CCDC_OUTPUT_PREVIEW; | |
2383 | } else { | |
2384 | ccdc->output &= ~CCDC_OUTPUT_PREVIEW; | |
2385 | } | |
2386 | break; | |
2387 | ||
2388 | case CCDC_PAD_SOURCE_OF | MEDIA_ENT_T_DEVNODE: | |
2389 | /* Write to memory */ | |
2390 | if (flags & MEDIA_LNK_FL_ENABLED) { | |
2391 | if (ccdc->output & ~CCDC_OUTPUT_MEMORY) | |
2392 | return -EBUSY; | |
2393 | ccdc->output |= CCDC_OUTPUT_MEMORY; | |
2394 | } else { | |
2395 | ccdc->output &= ~CCDC_OUTPUT_MEMORY; | |
2396 | } | |
2397 | break; | |
2398 | ||
2399 | case CCDC_PAD_SOURCE_OF | MEDIA_ENT_T_V4L2_SUBDEV: | |
2400 | /* Write to resizer */ | |
2401 | if (flags & MEDIA_LNK_FL_ENABLED) { | |
2402 | if (ccdc->output & ~CCDC_OUTPUT_RESIZER) | |
2403 | return -EBUSY; | |
2404 | ccdc->output |= CCDC_OUTPUT_RESIZER; | |
2405 | } else { | |
2406 | ccdc->output &= ~CCDC_OUTPUT_RESIZER; | |
2407 | } | |
2408 | break; | |
2409 | ||
2410 | default: | |
2411 | return -EINVAL; | |
2412 | } | |
2413 | ||
2414 | return 0; | |
2415 | } | |
2416 | ||
2417 | /* media operations */ | |
2418 | static const struct media_entity_operations ccdc_media_ops = { | |
2419 | .link_setup = ccdc_link_setup, | |
a6d7a62d | 2420 | .link_validate = v4l2_subdev_link_validate, |
de1135d4 LP |
2421 | }; |
2422 | ||
39099d09 LP |
2423 | void omap3isp_ccdc_unregister_entities(struct isp_ccdc_device *ccdc) |
2424 | { | |
2425 | v4l2_device_unregister_subdev(&ccdc->subdev); | |
2426 | omap3isp_video_unregister(&ccdc->video_out); | |
2427 | } | |
2428 | ||
2429 | int omap3isp_ccdc_register_entities(struct isp_ccdc_device *ccdc, | |
2430 | struct v4l2_device *vdev) | |
2431 | { | |
2432 | int ret; | |
2433 | ||
2434 | /* Register the subdev and video node. */ | |
2435 | ret = v4l2_device_register_subdev(vdev, &ccdc->subdev); | |
2436 | if (ret < 0) | |
2437 | goto error; | |
2438 | ||
2439 | ret = omap3isp_video_register(&ccdc->video_out, vdev); | |
2440 | if (ret < 0) | |
2441 | goto error; | |
2442 | ||
2443 | return 0; | |
2444 | ||
2445 | error: | |
2446 | omap3isp_ccdc_unregister_entities(ccdc); | |
2447 | return ret; | |
2448 | } | |
2449 | ||
2450 | /* ----------------------------------------------------------------------------- | |
2451 | * ISP CCDC initialisation and cleanup | |
2452 | */ | |
2453 | ||
de1135d4 LP |
2454 | /* |
2455 | * ccdc_init_entities - Initialize V4L2 subdev and media entity | |
2456 | * @ccdc: ISP CCDC module | |
2457 | * | |
2458 | * Return 0 on success and a negative error code on failure. | |
2459 | */ | |
2460 | static int ccdc_init_entities(struct isp_ccdc_device *ccdc) | |
2461 | { | |
2462 | struct v4l2_subdev *sd = &ccdc->subdev; | |
2463 | struct media_pad *pads = ccdc->pads; | |
2464 | struct media_entity *me = &sd->entity; | |
2465 | int ret; | |
2466 | ||
2467 | ccdc->input = CCDC_INPUT_NONE; | |
2468 | ||
2469 | v4l2_subdev_init(sd, &ccdc_v4l2_ops); | |
2470 | sd->internal_ops = &ccdc_v4l2_internal_ops; | |
2471 | strlcpy(sd->name, "OMAP3 ISP CCDC", sizeof(sd->name)); | |
2472 | sd->grp_id = 1 << 16; /* group ID for isp subdevs */ | |
2473 | v4l2_set_subdevdata(sd, ccdc); | |
2474 | sd->flags |= V4L2_SUBDEV_FL_HAS_EVENTS | V4L2_SUBDEV_FL_HAS_DEVNODE; | |
de1135d4 | 2475 | |
8dad936a SA |
2476 | pads[CCDC_PAD_SINK].flags = MEDIA_PAD_FL_SINK |
2477 | | MEDIA_PAD_FL_MUST_CONNECT; | |
de1135d4 LP |
2478 | pads[CCDC_PAD_SOURCE_VP].flags = MEDIA_PAD_FL_SOURCE; |
2479 | pads[CCDC_PAD_SOURCE_OF].flags = MEDIA_PAD_FL_SOURCE; | |
2480 | ||
2481 | me->ops = &ccdc_media_ops; | |
2482 | ret = media_entity_init(me, CCDC_PADS_NUM, pads, 0); | |
2483 | if (ret < 0) | |
2484 | return ret; | |
2485 | ||
2486 | ccdc_init_formats(sd, NULL); | |
2487 | ||
2488 | ccdc->video_out.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; | |
2489 | ccdc->video_out.ops = &ccdc_video_ops; | |
2490 | ccdc->video_out.isp = to_isp_device(ccdc); | |
2491 | ccdc->video_out.capture_mem = PAGE_ALIGN(4096 * 4096) * 3; | |
2492 | ccdc->video_out.bpl_alignment = 32; | |
2493 | ||
2494 | ret = omap3isp_video_init(&ccdc->video_out, "CCDC"); | |
2495 | if (ret < 0) | |
9b6390bd | 2496 | goto error_video; |
de1135d4 LP |
2497 | |
2498 | /* Connect the CCDC subdev to the video node. */ | |
2499 | ret = media_entity_create_link(&ccdc->subdev.entity, CCDC_PAD_SOURCE_OF, | |
2500 | &ccdc->video_out.video.entity, 0, 0); | |
2501 | if (ret < 0) | |
9b6390bd | 2502 | goto error_link; |
de1135d4 LP |
2503 | |
2504 | return 0; | |
9b6390bd LP |
2505 | |
2506 | error_link: | |
2507 | omap3isp_video_cleanup(&ccdc->video_out); | |
2508 | error_video: | |
2509 | media_entity_cleanup(me); | |
2510 | return ret; | |
de1135d4 LP |
2511 | } |
2512 | ||
de1135d4 LP |
2513 | /* |
2514 | * omap3isp_ccdc_init - CCDC module initialization. | |
872aba51 | 2515 | * @isp: Device pointer specific to the OMAP3 ISP. |
de1135d4 LP |
2516 | * |
2517 | * TODO: Get the initialisation values from platform data. | |
2518 | * | |
2519 | * Return 0 on success or a negative error code otherwise. | |
2520 | */ | |
2521 | int omap3isp_ccdc_init(struct isp_device *isp) | |
2522 | { | |
2523 | struct isp_ccdc_device *ccdc = &isp->isp_ccdc; | |
9b6390bd | 2524 | int ret; |
de1135d4 LP |
2525 | |
2526 | spin_lock_init(&ccdc->lock); | |
2527 | init_waitqueue_head(&ccdc->wait); | |
2528 | mutex_init(&ccdc->ioctl_lock); | |
2529 | ||
2530 | ccdc->stopping = CCDC_STOP_NOT_REQUESTED; | |
2531 | ||
2532 | INIT_WORK(&ccdc->lsc.table_work, ccdc_lsc_free_table_work); | |
2533 | ccdc->lsc.state = LSC_STATE_STOPPED; | |
2534 | INIT_LIST_HEAD(&ccdc->lsc.free_queue); | |
2535 | spin_lock_init(&ccdc->lsc.req_lock); | |
2536 | ||
de1135d4 LP |
2537 | ccdc->clamp.oblen = 0; |
2538 | ccdc->clamp.dcsubval = 0; | |
2539 | ||
de1135d4 LP |
2540 | ccdc->update = OMAP3ISP_CCDC_BLCLAMP; |
2541 | ccdc_apply_controls(ccdc); | |
2542 | ||
9b6390bd LP |
2543 | ret = ccdc_init_entities(ccdc); |
2544 | if (ret < 0) { | |
2545 | mutex_destroy(&ccdc->ioctl_lock); | |
2546 | return ret; | |
2547 | } | |
2548 | ||
2549 | return 0; | |
de1135d4 LP |
2550 | } |
2551 | ||
2552 | /* | |
2553 | * omap3isp_ccdc_cleanup - CCDC module cleanup. | |
872aba51 | 2554 | * @isp: Device pointer specific to the OMAP3 ISP. |
de1135d4 LP |
2555 | */ |
2556 | void omap3isp_ccdc_cleanup(struct isp_device *isp) | |
2557 | { | |
2558 | struct isp_ccdc_device *ccdc = &isp->isp_ccdc; | |
2559 | ||
63b4ca23 LP |
2560 | omap3isp_video_cleanup(&ccdc->video_out); |
2561 | media_entity_cleanup(&ccdc->subdev.entity); | |
2562 | ||
de1135d4 LP |
2563 | /* Free LSC requests. As the CCDC is stopped there's no active request, |
2564 | * so only the pending request and the free queue need to be handled. | |
2565 | */ | |
2566 | ccdc_lsc_free_request(ccdc, ccdc->lsc.request); | |
2567 | cancel_work_sync(&ccdc->lsc.table_work); | |
2568 | ccdc_lsc_free_queue(ccdc, &ccdc->lsc.free_queue); | |
2569 | ||
c60e153d LP |
2570 | if (ccdc->fpc.addr != NULL) |
2571 | dma_free_coherent(isp->dev, ccdc->fpc.fpnum * 4, ccdc->fpc.addr, | |
2572 | ccdc->fpc.dma); | |
ed33ac8e LP |
2573 | |
2574 | mutex_destroy(&ccdc->ioctl_lock); | |
de1135d4 | 2575 | } |