Commit | Line | Data |
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0d3244d6 MD |
1 | /* |
2 | * V4L2 Driver for SuperH Mobile CEU interface | |
3 | * | |
4 | * Copyright (C) 2008 Magnus Damm | |
5 | * | |
6 | * Based on V4L2 Driver for PXA camera host - "pxa_camera.c", | |
7 | * | |
8 | * Copyright (C) 2006, Sascha Hauer, Pengutronix | |
9 | * Copyright (C) 2008, Guennadi Liakhovetski <kernel@pengutronix.de> | |
10 | * | |
11 | * This program is free software; you can redistribute it and/or modify | |
12 | * it under the terms of the GNU General Public License as published by | |
13 | * the Free Software Foundation; either version 2 of the License, or | |
14 | * (at your option) any later version. | |
15 | */ | |
16 | ||
17 | #include <linux/init.h> | |
18 | #include <linux/module.h> | |
19 | #include <linux/io.h> | |
20 | #include <linux/delay.h> | |
21 | #include <linux/dma-mapping.h> | |
22 | #include <linux/errno.h> | |
23 | #include <linux/fs.h> | |
24 | #include <linux/interrupt.h> | |
25 | #include <linux/kernel.h> | |
26 | #include <linux/mm.h> | |
27 | #include <linux/moduleparam.h> | |
28 | #include <linux/time.h> | |
29 | #include <linux/version.h> | |
5a0e3ad6 | 30 | #include <linux/slab.h> |
0d3244d6 MD |
31 | #include <linux/device.h> |
32 | #include <linux/platform_device.h> | |
0d3244d6 | 33 | #include <linux/videodev2.h> |
6d1386c6 | 34 | #include <linux/pm_runtime.h> |
f39c1ab3 | 35 | #include <linux/sched.h> |
0d3244d6 MD |
36 | |
37 | #include <media/v4l2-common.h> | |
38 | #include <media/v4l2-dev.h> | |
39 | #include <media/soc_camera.h> | |
40 | #include <media/sh_mobile_ceu.h> | |
41 | #include <media/videobuf-dma-contig.h> | |
760697be GL |
42 | #include <media/v4l2-mediabus.h> |
43 | #include <media/soc_mediabus.h> | |
0d3244d6 MD |
44 | |
45 | /* register offsets for sh7722 / sh7723 */ | |
46 | ||
dd54203b MD |
47 | #define CAPSR 0x00 /* Capture start register */ |
48 | #define CAPCR 0x04 /* Capture control register */ | |
49 | #define CAMCR 0x08 /* Capture interface control register */ | |
50 | #define CMCYR 0x0c /* Capture interface cycle register */ | |
51 | #define CAMOR 0x10 /* Capture interface offset register */ | |
52 | #define CAPWR 0x14 /* Capture interface width register */ | |
53 | #define CAIFR 0x18 /* Capture interface input format register */ | |
54 | #define CSTCR 0x20 /* Camera strobe control register (<= sh7722) */ | |
55 | #define CSECR 0x24 /* Camera strobe emission count register (<= sh7722) */ | |
56 | #define CRCNTR 0x28 /* CEU register control register */ | |
57 | #define CRCMPR 0x2c /* CEU register forcible control register */ | |
58 | #define CFLCR 0x30 /* Capture filter control register */ | |
59 | #define CFSZR 0x34 /* Capture filter size clip register */ | |
60 | #define CDWDR 0x38 /* Capture destination width register */ | |
61 | #define CDAYR 0x3c /* Capture data address Y register */ | |
62 | #define CDACR 0x40 /* Capture data address C register */ | |
63 | #define CDBYR 0x44 /* Capture data bottom-field address Y register */ | |
64 | #define CDBCR 0x48 /* Capture data bottom-field address C register */ | |
65 | #define CBDSR 0x4c /* Capture bundle destination size register */ | |
66 | #define CFWCR 0x5c /* Firewall operation control register */ | |
67 | #define CLFCR 0x60 /* Capture low-pass filter control register */ | |
68 | #define CDOCR 0x64 /* Capture data output control register */ | |
69 | #define CDDCR 0x68 /* Capture data complexity level register */ | |
70 | #define CDDAR 0x6c /* Capture data complexity level address register */ | |
71 | #define CEIER 0x70 /* Capture event interrupt enable register */ | |
72 | #define CETCR 0x74 /* Capture event flag clear register */ | |
73 | #define CSTSR 0x7c /* Capture status register */ | |
74 | #define CSRTR 0x80 /* Capture software reset register */ | |
75 | #define CDSSR 0x84 /* Capture data size register */ | |
76 | #define CDAYR2 0x90 /* Capture data address Y register 2 */ | |
77 | #define CDACR2 0x94 /* Capture data address C register 2 */ | |
78 | #define CDBYR2 0x98 /* Capture data bottom-field address Y register 2 */ | |
79 | #define CDBCR2 0x9c /* Capture data bottom-field address C register 2 */ | |
0d3244d6 | 80 | |
6a6c8786 GL |
81 | #undef DEBUG_GEOMETRY |
82 | #ifdef DEBUG_GEOMETRY | |
83 | #define dev_geo dev_info | |
84 | #else | |
85 | #define dev_geo dev_dbg | |
86 | #endif | |
87 | ||
0d3244d6 MD |
88 | /* per video frame buffer */ |
89 | struct sh_mobile_ceu_buffer { | |
90 | struct videobuf_buffer vb; /* v4l buffer must be first */ | |
760697be | 91 | enum v4l2_mbus_pixelcode code; |
0d3244d6 MD |
92 | }; |
93 | ||
94 | struct sh_mobile_ceu_dev { | |
0d3244d6 MD |
95 | struct soc_camera_host ici; |
96 | struct soc_camera_device *icd; | |
97 | ||
98 | unsigned int irq; | |
99 | void __iomem *base; | |
100 | unsigned long video_limit; | |
101 | ||
c60f2b5c | 102 | /* lock used to protect videobuf */ |
0d3244d6 MD |
103 | spinlock_t lock; |
104 | struct list_head capture; | |
105 | struct videobuf_buffer *active; | |
106 | ||
107 | struct sh_mobile_ceu_info *pdata; | |
8be65dc5 | 108 | |
961801bb GL |
109 | u32 cflcr; |
110 | ||
1edcc10d KM |
111 | enum v4l2_field field; |
112 | ||
904078f1 GL |
113 | unsigned int image_mode:1; |
114 | unsigned int is_16bit:1; | |
115 | }; | |
116 | ||
117 | struct sh_mobile_ceu_cam { | |
e622681d GL |
118 | /* CEU offsets within scaled by the CEU camera output */ |
119 | unsigned int ceu_left; | |
120 | unsigned int ceu_top; | |
121 | /* Client output, as seen by the CEU */ | |
122 | unsigned int width; | |
123 | unsigned int height; | |
124 | /* | |
125 | * User window from S_CROP / G_CROP, produced by client cropping and | |
126 | * scaling, CEU scaling and CEU cropping, mapped back onto the client | |
127 | * input window | |
128 | */ | |
129 | struct v4l2_rect subrect; | |
130 | /* Camera cropping rectangle */ | |
131 | struct v4l2_rect rect; | |
760697be GL |
132 | const struct soc_mbus_pixelfmt *extra_fmt; |
133 | enum v4l2_mbus_pixelcode code; | |
0d3244d6 MD |
134 | }; |
135 | ||
c354b400 KM |
136 | static unsigned long make_bus_param(struct sh_mobile_ceu_dev *pcdev) |
137 | { | |
138 | unsigned long flags; | |
139 | ||
140 | flags = SOCAM_MASTER | | |
141 | SOCAM_PCLK_SAMPLE_RISING | | |
142 | SOCAM_HSYNC_ACTIVE_HIGH | | |
143 | SOCAM_HSYNC_ACTIVE_LOW | | |
144 | SOCAM_VSYNC_ACTIVE_HIGH | | |
145 | SOCAM_VSYNC_ACTIVE_LOW | | |
146 | SOCAM_DATA_ACTIVE_HIGH; | |
147 | ||
148 | if (pcdev->pdata->flags & SH_CEU_FLAG_USE_8BIT_BUS) | |
149 | flags |= SOCAM_DATAWIDTH_8; | |
150 | ||
151 | if (pcdev->pdata->flags & SH_CEU_FLAG_USE_16BIT_BUS) | |
152 | flags |= SOCAM_DATAWIDTH_16; | |
153 | ||
154 | if (flags & SOCAM_DATAWIDTH_MASK) | |
155 | return flags; | |
156 | ||
157 | return 0; | |
158 | } | |
159 | ||
0d3244d6 | 160 | static void ceu_write(struct sh_mobile_ceu_dev *priv, |
7a1a8164 | 161 | unsigned long reg_offs, u32 data) |
0d3244d6 MD |
162 | { |
163 | iowrite32(data, priv->base + reg_offs); | |
164 | } | |
165 | ||
7a1a8164 | 166 | static u32 ceu_read(struct sh_mobile_ceu_dev *priv, unsigned long reg_offs) |
0d3244d6 MD |
167 | { |
168 | return ioread32(priv->base + reg_offs); | |
169 | } | |
170 | ||
b1de7aeb KM |
171 | static int sh_mobile_ceu_soft_reset(struct sh_mobile_ceu_dev *pcdev) |
172 | { | |
173 | int i, success = 0; | |
174 | struct soc_camera_device *icd = pcdev->icd; | |
175 | ||
176 | ceu_write(pcdev, CAPSR, 1 << 16); /* reset */ | |
177 | ||
178 | /* wait CSTSR.CPTON bit */ | |
179 | for (i = 0; i < 1000; i++) { | |
180 | if (!(ceu_read(pcdev, CSTSR) & 1)) { | |
181 | success++; | |
182 | break; | |
183 | } | |
184 | udelay(1); | |
185 | } | |
186 | ||
187 | /* wait CAPSR.CPKIL bit */ | |
188 | for (i = 0; i < 1000; i++) { | |
189 | if (!(ceu_read(pcdev, CAPSR) & (1 << 16))) { | |
190 | success++; | |
191 | break; | |
192 | } | |
193 | udelay(1); | |
194 | } | |
195 | ||
196 | ||
197 | if (2 != success) { | |
198 | dev_warn(&icd->dev, "soft reset time out\n"); | |
199 | return -EIO; | |
200 | } | |
201 | ||
202 | return 0; | |
203 | } | |
204 | ||
0d3244d6 MD |
205 | /* |
206 | * Videobuf operations | |
207 | */ | |
208 | static int sh_mobile_ceu_videobuf_setup(struct videobuf_queue *vq, | |
209 | unsigned int *count, | |
210 | unsigned int *size) | |
211 | { | |
212 | struct soc_camera_device *icd = vq->priv_data; | |
213 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); | |
214 | struct sh_mobile_ceu_dev *pcdev = ici->priv; | |
760697be GL |
215 | int bytes_per_line = soc_mbus_bytes_per_line(icd->user_width, |
216 | icd->current_fmt->host_fmt); | |
0d3244d6 | 217 | |
760697be GL |
218 | if (bytes_per_line < 0) |
219 | return bytes_per_line; | |
220 | ||
e6641c80 | 221 | *size = bytes_per_line * icd->user_height; |
0d3244d6 MD |
222 | |
223 | if (0 == *count) | |
224 | *count = 2; | |
225 | ||
226 | if (pcdev->video_limit) { | |
dab7e310 AB |
227 | if (PAGE_ALIGN(*size) * *count > pcdev->video_limit) |
228 | *count = pcdev->video_limit / PAGE_ALIGN(*size); | |
0d3244d6 MD |
229 | } |
230 | ||
0166b743 | 231 | dev_dbg(icd->dev.parent, "count=%d, size=%d\n", *count, *size); |
0d3244d6 MD |
232 | |
233 | return 0; | |
234 | } | |
235 | ||
236 | static void free_buffer(struct videobuf_queue *vq, | |
237 | struct sh_mobile_ceu_buffer *buf) | |
238 | { | |
239 | struct soc_camera_device *icd = vq->priv_data; | |
6a6c8786 | 240 | struct device *dev = icd->dev.parent; |
0d3244d6 | 241 | |
6a6c8786 | 242 | dev_dbg(dev, "%s (vb=0x%p) 0x%08lx %zd\n", __func__, |
0d3244d6 MD |
243 | &buf->vb, buf->vb.baddr, buf->vb.bsize); |
244 | ||
245 | if (in_interrupt()) | |
246 | BUG(); | |
247 | ||
0e0809a5 | 248 | videobuf_waiton(vq, &buf->vb, 0, 0); |
0d3244d6 | 249 | videobuf_dma_contig_free(vq, &buf->vb); |
6a6c8786 | 250 | dev_dbg(dev, "%s freed\n", __func__); |
0d3244d6 MD |
251 | buf->vb.state = VIDEOBUF_NEEDS_INIT; |
252 | } | |
253 | ||
7a1a8164 MD |
254 | #define CEU_CETCR_MAGIC 0x0317f313 /* acknowledge magical interrupt sources */ |
255 | #define CEU_CETCR_IGRW (1 << 4) /* prohibited register access interrupt bit */ | |
256 | #define CEU_CEIER_CPEIE (1 << 0) /* one-frame capture end interrupt */ | |
5cf93f1d | 257 | #define CEU_CEIER_VBP (1 << 20) /* vbp error */ |
7a1a8164 | 258 | #define CEU_CAPCR_CTNCP (1 << 16) /* continuous capture mode (if set) */ |
5cf93f1d | 259 | #define CEU_CEIER_MASK (CEU_CEIER_CPEIE | CEU_CEIER_VBP) |
7a1a8164 MD |
260 | |
261 | ||
5cf93f1d KM |
262 | /* |
263 | * return value doesn't reflex the success/failure to queue the new buffer, | |
264 | * but rather the status of the previous buffer. | |
265 | */ | |
266 | static int sh_mobile_ceu_capture(struct sh_mobile_ceu_dev *pcdev) | |
0d3244d6 | 267 | { |
8be65dc5 | 268 | struct soc_camera_device *icd = pcdev->icd; |
ccab8a29 | 269 | dma_addr_t phys_addr_top, phys_addr_bottom; |
1edcc10d KM |
270 | unsigned long top1, top2; |
271 | unsigned long bottom1, bottom2; | |
5cf93f1d KM |
272 | u32 status; |
273 | int ret = 0; | |
7a1a8164 | 274 | |
5d28d525 GL |
275 | /* |
276 | * The hardware is _very_ picky about this sequence. Especially | |
7a1a8164 MD |
277 | * the CEU_CETCR_MAGIC value. It seems like we need to acknowledge |
278 | * several not-so-well documented interrupt sources in CETCR. | |
279 | */ | |
5cf93f1d KM |
280 | ceu_write(pcdev, CEIER, ceu_read(pcdev, CEIER) & ~CEU_CEIER_MASK); |
281 | status = ceu_read(pcdev, CETCR); | |
282 | ceu_write(pcdev, CETCR, ~status & CEU_CETCR_MAGIC); | |
283 | ceu_write(pcdev, CEIER, ceu_read(pcdev, CEIER) | CEU_CEIER_MASK); | |
7a1a8164 MD |
284 | ceu_write(pcdev, CAPCR, ceu_read(pcdev, CAPCR) & ~CEU_CAPCR_CTNCP); |
285 | ceu_write(pcdev, CETCR, CEU_CETCR_MAGIC ^ CEU_CETCR_IGRW); | |
0d3244d6 | 286 | |
5cf93f1d KM |
287 | /* |
288 | * When a VBP interrupt occurs, a capture end interrupt does not occur | |
289 | * and the image of that frame is not captured correctly. So, soft reset | |
290 | * is needed here. | |
291 | */ | |
292 | if (status & CEU_CEIER_VBP) { | |
293 | sh_mobile_ceu_soft_reset(pcdev); | |
294 | ret = -EIO; | |
295 | } | |
296 | ||
8be65dc5 | 297 | if (!pcdev->active) |
5cf93f1d | 298 | return ret; |
8be65dc5 | 299 | |
1edcc10d KM |
300 | if (V4L2_FIELD_INTERLACED_BT == pcdev->field) { |
301 | top1 = CDBYR; | |
302 | top2 = CDBCR; | |
303 | bottom1 = CDAYR; | |
304 | bottom2 = CDACR; | |
305 | } else { | |
306 | top1 = CDAYR; | |
307 | top2 = CDACR; | |
308 | bottom1 = CDBYR; | |
309 | bottom2 = CDBCR; | |
310 | } | |
311 | ||
ccab8a29 | 312 | phys_addr_top = videobuf_to_dma_contig(pcdev->active); |
1edcc10d KM |
313 | ceu_write(pcdev, top1, phys_addr_top); |
314 | if (V4L2_FIELD_NONE != pcdev->field) { | |
6a6c8786 | 315 | phys_addr_bottom = phys_addr_top + icd->user_width; |
1edcc10d | 316 | ceu_write(pcdev, bottom1, phys_addr_bottom); |
ccab8a29 | 317 | } |
8be65dc5 | 318 | |
760697be | 319 | switch (icd->current_fmt->host_fmt->fourcc) { |
8be65dc5 MD |
320 | case V4L2_PIX_FMT_NV12: |
321 | case V4L2_PIX_FMT_NV21: | |
9e4a56d2 MD |
322 | case V4L2_PIX_FMT_NV16: |
323 | case V4L2_PIX_FMT_NV61: | |
6a6c8786 GL |
324 | phys_addr_top += icd->user_width * |
325 | icd->user_height; | |
1edcc10d KM |
326 | ceu_write(pcdev, top2, phys_addr_top); |
327 | if (V4L2_FIELD_NONE != pcdev->field) { | |
328 | phys_addr_bottom = phys_addr_top + icd->user_width; | |
329 | ceu_write(pcdev, bottom2, phys_addr_bottom); | |
ccab8a29 | 330 | } |
0d3244d6 | 331 | } |
8be65dc5 MD |
332 | |
333 | pcdev->active->state = VIDEOBUF_ACTIVE; | |
334 | ceu_write(pcdev, CAPSR, 0x1); /* start capture */ | |
5cf93f1d KM |
335 | |
336 | return ret; | |
0d3244d6 MD |
337 | } |
338 | ||
339 | static int sh_mobile_ceu_videobuf_prepare(struct videobuf_queue *vq, | |
340 | struct videobuf_buffer *vb, | |
341 | enum v4l2_field field) | |
342 | { | |
343 | struct soc_camera_device *icd = vq->priv_data; | |
344 | struct sh_mobile_ceu_buffer *buf; | |
760697be GL |
345 | int bytes_per_line = soc_mbus_bytes_per_line(icd->user_width, |
346 | icd->current_fmt->host_fmt); | |
0d3244d6 MD |
347 | int ret; |
348 | ||
760697be GL |
349 | if (bytes_per_line < 0) |
350 | return bytes_per_line; | |
351 | ||
0d3244d6 MD |
352 | buf = container_of(vb, struct sh_mobile_ceu_buffer, vb); |
353 | ||
0166b743 | 354 | dev_dbg(icd->dev.parent, "%s (vb=0x%p) 0x%08lx %zd\n", __func__, |
0d3244d6 MD |
355 | vb, vb->baddr, vb->bsize); |
356 | ||
357 | /* Added list head initialization on alloc */ | |
358 | WARN_ON(!list_empty(&vb->queue)); | |
359 | ||
360 | #ifdef DEBUG | |
5d28d525 GL |
361 | /* |
362 | * This can be useful if you want to see if we actually fill | |
363 | * the buffer with something | |
364 | */ | |
0d3244d6 MD |
365 | memset((void *)vb->baddr, 0xaa, vb->bsize); |
366 | #endif | |
367 | ||
368 | BUG_ON(NULL == icd->current_fmt); | |
369 | ||
760697be | 370 | if (buf->code != icd->current_fmt->code || |
6a6c8786 GL |
371 | vb->width != icd->user_width || |
372 | vb->height != icd->user_height || | |
0d3244d6 | 373 | vb->field != field) { |
760697be | 374 | buf->code = icd->current_fmt->code; |
6a6c8786 GL |
375 | vb->width = icd->user_width; |
376 | vb->height = icd->user_height; | |
0d3244d6 MD |
377 | vb->field = field; |
378 | vb->state = VIDEOBUF_NEEDS_INIT; | |
379 | } | |
380 | ||
760697be | 381 | vb->size = vb->height * bytes_per_line; |
0d3244d6 MD |
382 | if (0 != vb->baddr && vb->bsize < vb->size) { |
383 | ret = -EINVAL; | |
384 | goto out; | |
385 | } | |
386 | ||
387 | if (vb->state == VIDEOBUF_NEEDS_INIT) { | |
388 | ret = videobuf_iolock(vq, vb, NULL); | |
389 | if (ret) | |
390 | goto fail; | |
391 | vb->state = VIDEOBUF_PREPARED; | |
392 | } | |
393 | ||
394 | return 0; | |
395 | fail: | |
396 | free_buffer(vq, buf); | |
397 | out: | |
398 | return ret; | |
399 | } | |
400 | ||
2dd54a54 | 401 | /* Called under spinlock_irqsave(&pcdev->lock, ...) */ |
0d3244d6 MD |
402 | static void sh_mobile_ceu_videobuf_queue(struct videobuf_queue *vq, |
403 | struct videobuf_buffer *vb) | |
404 | { | |
405 | struct soc_camera_device *icd = vq->priv_data; | |
406 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); | |
407 | struct sh_mobile_ceu_dev *pcdev = ici->priv; | |
0d3244d6 | 408 | |
0166b743 | 409 | dev_dbg(icd->dev.parent, "%s (vb=0x%p) 0x%08lx %zd\n", __func__, |
0d3244d6 MD |
410 | vb, vb->baddr, vb->bsize); |
411 | ||
51354cc3 | 412 | vb->state = VIDEOBUF_QUEUED; |
0d3244d6 MD |
413 | list_add_tail(&vb->queue, &pcdev->capture); |
414 | ||
415 | if (!pcdev->active) { | |
5cf93f1d KM |
416 | /* |
417 | * Because there were no active buffer at this moment, | |
418 | * we are not interested in the return value of | |
419 | * sh_mobile_ceu_capture here. | |
420 | */ | |
0d3244d6 MD |
421 | pcdev->active = vb; |
422 | sh_mobile_ceu_capture(pcdev); | |
423 | } | |
0d3244d6 MD |
424 | } |
425 | ||
426 | static void sh_mobile_ceu_videobuf_release(struct videobuf_queue *vq, | |
427 | struct videobuf_buffer *vb) | |
428 | { | |
cca0e549 GL |
429 | struct soc_camera_device *icd = vq->priv_data; |
430 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); | |
431 | struct sh_mobile_ceu_dev *pcdev = ici->priv; | |
432 | unsigned long flags; | |
433 | ||
434 | spin_lock_irqsave(&pcdev->lock, flags); | |
435 | ||
436 | if (pcdev->active == vb) { | |
437 | /* disable capture (release DMA buffer), reset */ | |
438 | ceu_write(pcdev, CAPSR, 1 << 16); | |
439 | pcdev->active = NULL; | |
440 | } | |
441 | ||
442 | if ((vb->state == VIDEOBUF_ACTIVE || vb->state == VIDEOBUF_QUEUED) && | |
443 | !list_empty(&vb->queue)) { | |
444 | vb->state = VIDEOBUF_ERROR; | |
445 | list_del_init(&vb->queue); | |
446 | } | |
447 | ||
448 | spin_unlock_irqrestore(&pcdev->lock, flags); | |
449 | ||
0d3244d6 MD |
450 | free_buffer(vq, container_of(vb, struct sh_mobile_ceu_buffer, vb)); |
451 | } | |
452 | ||
453 | static struct videobuf_queue_ops sh_mobile_ceu_videobuf_ops = { | |
454 | .buf_setup = sh_mobile_ceu_videobuf_setup, | |
455 | .buf_prepare = sh_mobile_ceu_videobuf_prepare, | |
456 | .buf_queue = sh_mobile_ceu_videobuf_queue, | |
457 | .buf_release = sh_mobile_ceu_videobuf_release, | |
458 | }; | |
459 | ||
460 | static irqreturn_t sh_mobile_ceu_irq(int irq, void *data) | |
461 | { | |
462 | struct sh_mobile_ceu_dev *pcdev = data; | |
463 | struct videobuf_buffer *vb; | |
464 | unsigned long flags; | |
465 | ||
466 | spin_lock_irqsave(&pcdev->lock, flags); | |
467 | ||
468 | vb = pcdev->active; | |
cca0e549 GL |
469 | if (!vb) |
470 | /* Stale interrupt from a released buffer */ | |
471 | goto out; | |
472 | ||
0d3244d6 MD |
473 | list_del_init(&vb->queue); |
474 | ||
475 | if (!list_empty(&pcdev->capture)) | |
476 | pcdev->active = list_entry(pcdev->capture.next, | |
477 | struct videobuf_buffer, queue); | |
478 | else | |
479 | pcdev->active = NULL; | |
480 | ||
5cf93f1d KM |
481 | vb->state = (sh_mobile_ceu_capture(pcdev) < 0) ? |
482 | VIDEOBUF_ERROR : VIDEOBUF_DONE; | |
0d3244d6 MD |
483 | do_gettimeofday(&vb->ts); |
484 | vb->field_count++; | |
485 | wake_up(&vb->done); | |
cca0e549 GL |
486 | |
487 | out: | |
0d3244d6 MD |
488 | spin_unlock_irqrestore(&pcdev->lock, flags); |
489 | ||
490 | return IRQ_HANDLED; | |
491 | } | |
492 | ||
1c3bb743 | 493 | /* Called with .video_lock held */ |
0d3244d6 MD |
494 | static int sh_mobile_ceu_add_device(struct soc_camera_device *icd) |
495 | { | |
496 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); | |
497 | struct sh_mobile_ceu_dev *pcdev = ici->priv; | |
6ed7c038 | 498 | int ret; |
0d3244d6 | 499 | |
0d3244d6 | 500 | if (pcdev->icd) |
979ea1dd | 501 | return -EBUSY; |
0d3244d6 | 502 | |
0166b743 | 503 | dev_info(icd->dev.parent, |
0d3244d6 MD |
504 | "SuperH Mobile CEU driver attached to camera %d\n", |
505 | icd->devnum); | |
506 | ||
a79aebfc | 507 | pm_runtime_get_sync(ici->v4l2_dev.dev); |
40e2e092 | 508 | |
6ed7c038 GL |
509 | ret = sh_mobile_ceu_soft_reset(pcdev); |
510 | if (!ret) | |
511 | pcdev->icd = icd; | |
979ea1dd | 512 | |
6ed7c038 | 513 | return ret; |
0d3244d6 MD |
514 | } |
515 | ||
1c3bb743 | 516 | /* Called with .video_lock held */ |
0d3244d6 MD |
517 | static void sh_mobile_ceu_remove_device(struct soc_camera_device *icd) |
518 | { | |
519 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); | |
520 | struct sh_mobile_ceu_dev *pcdev = ici->priv; | |
51354cc3 | 521 | unsigned long flags; |
0d3244d6 MD |
522 | |
523 | BUG_ON(icd != pcdev->icd); | |
524 | ||
525 | /* disable capture, disable interrupts */ | |
526 | ceu_write(pcdev, CEIER, 0); | |
b1de7aeb | 527 | sh_mobile_ceu_soft_reset(pcdev); |
51354cc3 MD |
528 | |
529 | /* make sure active buffer is canceled */ | |
530 | spin_lock_irqsave(&pcdev->lock, flags); | |
531 | if (pcdev->active) { | |
532 | list_del(&pcdev->active->queue); | |
533 | pcdev->active->state = VIDEOBUF_ERROR; | |
534 | wake_up_all(&pcdev->active->done); | |
535 | pcdev->active = NULL; | |
536 | } | |
537 | spin_unlock_irqrestore(&pcdev->lock, flags); | |
538 | ||
a79aebfc | 539 | pm_runtime_put_sync(ici->v4l2_dev.dev); |
40e2e092 | 540 | |
0166b743 | 541 | dev_info(icd->dev.parent, |
0d3244d6 MD |
542 | "SuperH Mobile CEU driver detached from camera %d\n", |
543 | icd->devnum); | |
544 | ||
545 | pcdev->icd = NULL; | |
546 | } | |
547 | ||
961801bb GL |
548 | /* |
549 | * See chapter 29.4.12 "Capture Filter Control Register (CFLCR)" | |
550 | * in SH7722 Hardware Manual | |
551 | */ | |
552 | static unsigned int size_dst(unsigned int src, unsigned int scale) | |
553 | { | |
554 | unsigned int mant_pre = scale >> 12; | |
555 | if (!src || !scale) | |
556 | return src; | |
557 | return ((mant_pre + 2 * (src - 1)) / (2 * mant_pre) - 1) * | |
558 | mant_pre * 4096 / scale + 1; | |
559 | } | |
560 | ||
961801bb GL |
561 | static u16 calc_scale(unsigned int src, unsigned int *dst) |
562 | { | |
563 | u16 scale; | |
564 | ||
565 | if (src == *dst) | |
566 | return 0; | |
567 | ||
568 | scale = (src * 4096 / *dst) & ~7; | |
569 | ||
570 | while (scale > 4096 && size_dst(src, scale) < *dst) | |
571 | scale -= 8; | |
572 | ||
573 | *dst = size_dst(src, scale); | |
574 | ||
575 | return scale; | |
576 | } | |
577 | ||
578 | /* rect is guaranteed to not exceed the scaled camera rectangle */ | |
e622681d | 579 | static void sh_mobile_ceu_set_rect(struct soc_camera_device *icd) |
904078f1 GL |
580 | { |
581 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); | |
582 | struct sh_mobile_ceu_cam *cam = icd->host_priv; | |
583 | struct sh_mobile_ceu_dev *pcdev = ici->priv; | |
6a6c8786 GL |
584 | unsigned int height, width, cdwdr_width, in_width, in_height; |
585 | unsigned int left_offset, top_offset; | |
904078f1 GL |
586 | u32 camor; |
587 | ||
e622681d GL |
588 | dev_geo(icd->dev.parent, "Crop %ux%u@%u:%u\n", |
589 | icd->user_width, icd->user_height, cam->ceu_left, cam->ceu_top); | |
904078f1 | 590 | |
e622681d GL |
591 | left_offset = cam->ceu_left; |
592 | top_offset = cam->ceu_top; | |
904078f1 | 593 | |
e622681d | 594 | /* CEU cropping (CFSZR) is applied _after_ the scaling filter (CFLCR) */ |
904078f1 | 595 | if (pcdev->image_mode) { |
e622681d | 596 | in_width = cam->width; |
961801bb | 597 | if (!pcdev->is_16bit) { |
961801bb GL |
598 | in_width *= 2; |
599 | left_offset *= 2; | |
600 | } | |
e622681d GL |
601 | width = icd->user_width; |
602 | cdwdr_width = icd->user_width; | |
904078f1 | 603 | } else { |
e622681d | 604 | int bytes_per_line = soc_mbus_bytes_per_line(icd->user_width, |
760697be GL |
605 | icd->current_fmt->host_fmt); |
606 | unsigned int w_factor; | |
6a6c8786 | 607 | |
e622681d | 608 | width = icd->user_width; |
6a6c8786 | 609 | |
760697be GL |
610 | switch (icd->current_fmt->host_fmt->packing) { |
611 | case SOC_MBUS_PACKING_2X8_PADHI: | |
612 | w_factor = 2; | |
613 | break; | |
614 | default: | |
615 | w_factor = 1; | |
616 | } | |
961801bb | 617 | |
e622681d | 618 | in_width = cam->width * w_factor; |
760697be | 619 | left_offset = left_offset * w_factor; |
961801bb | 620 | |
760697be | 621 | if (bytes_per_line < 0) |
e622681d | 622 | cdwdr_width = icd->user_width; |
760697be GL |
623 | else |
624 | cdwdr_width = bytes_per_line; | |
904078f1 GL |
625 | } |
626 | ||
e622681d GL |
627 | height = icd->user_height; |
628 | in_height = cam->height; | |
1edcc10d | 629 | if (V4L2_FIELD_NONE != pcdev->field) { |
904078f1 | 630 | height /= 2; |
961801bb GL |
631 | in_height /= 2; |
632 | top_offset /= 2; | |
904078f1 GL |
633 | cdwdr_width *= 2; |
634 | } | |
635 | ||
b3b5020d GL |
636 | /* CSI2 special configuration */ |
637 | if (pcdev->pdata->csi2_dev) { | |
638 | in_width = ((in_width - 2) * 2); | |
639 | left_offset *= 2; | |
640 | } | |
641 | ||
6a6c8786 | 642 | /* Set CAMOR, CAPWR, CFSZR, take care of CDWDR */ |
904078f1 | 643 | camor = left_offset | (top_offset << 16); |
6a6c8786 GL |
644 | |
645 | dev_geo(icd->dev.parent, | |
646 | "CAMOR 0x%x, CAPWR 0x%x, CFSZR 0x%x, CDWDR 0x%x\n", camor, | |
647 | (in_height << 16) | in_width, (height << 16) | width, | |
648 | cdwdr_width); | |
649 | ||
904078f1 | 650 | ceu_write(pcdev, CAMOR, camor); |
961801bb | 651 | ceu_write(pcdev, CAPWR, (in_height << 16) | in_width); |
6a6c8786 | 652 | ceu_write(pcdev, CFSZR, (height << 16) | width); |
904078f1 GL |
653 | ceu_write(pcdev, CDWDR, cdwdr_width); |
654 | } | |
655 | ||
656 | static u32 capture_save_reset(struct sh_mobile_ceu_dev *pcdev) | |
657 | { | |
658 | u32 capsr = ceu_read(pcdev, CAPSR); | |
659 | ceu_write(pcdev, CAPSR, 1 << 16); /* reset, stop capture */ | |
660 | return capsr; | |
661 | } | |
662 | ||
663 | static void capture_restore(struct sh_mobile_ceu_dev *pcdev, u32 capsr) | |
664 | { | |
665 | unsigned long timeout = jiffies + 10 * HZ; | |
666 | ||
667 | /* | |
668 | * Wait until the end of the current frame. It can take a long time, | |
669 | * but if it has been aborted by a CAPSR reset, it shoule exit sooner. | |
670 | */ | |
671 | while ((ceu_read(pcdev, CSTSR) & 1) && time_before(jiffies, timeout)) | |
672 | msleep(1); | |
673 | ||
674 | if (time_after(jiffies, timeout)) { | |
675 | dev_err(pcdev->ici.v4l2_dev.dev, | |
676 | "Timeout waiting for frame end! Interface problem?\n"); | |
677 | return; | |
678 | } | |
679 | ||
680 | /* Wait until reset clears, this shall not hang... */ | |
681 | while (ceu_read(pcdev, CAPSR) & (1 << 16)) | |
682 | udelay(10); | |
683 | ||
684 | /* Anything to restore? */ | |
685 | if (capsr & ~(1 << 16)) | |
686 | ceu_write(pcdev, CAPSR, capsr); | |
687 | } | |
688 | ||
0d3244d6 MD |
689 | static int sh_mobile_ceu_set_bus_param(struct soc_camera_device *icd, |
690 | __u32 pixfmt) | |
691 | { | |
692 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); | |
693 | struct sh_mobile_ceu_dev *pcdev = ici->priv; | |
904078f1 | 694 | int ret; |
0d3244d6 | 695 | unsigned long camera_flags, common_flags, value; |
904078f1 GL |
696 | int yuv_lineskip; |
697 | struct sh_mobile_ceu_cam *cam = icd->host_priv; | |
698 | u32 capsr = capture_save_reset(pcdev); | |
0d3244d6 MD |
699 | |
700 | camera_flags = icd->ops->query_bus_param(icd); | |
701 | common_flags = soc_camera_bus_param_compatible(camera_flags, | |
c354b400 | 702 | make_bus_param(pcdev)); |
0d3244d6 MD |
703 | if (!common_flags) |
704 | return -EINVAL; | |
705 | ||
85dc1cff KM |
706 | /* Make choises, based on platform preferences */ |
707 | if ((common_flags & SOCAM_HSYNC_ACTIVE_HIGH) && | |
708 | (common_flags & SOCAM_HSYNC_ACTIVE_LOW)) { | |
709 | if (pcdev->pdata->flags & SH_CEU_FLAG_HSYNC_LOW) | |
710 | common_flags &= ~SOCAM_HSYNC_ACTIVE_HIGH; | |
711 | else | |
712 | common_flags &= ~SOCAM_HSYNC_ACTIVE_LOW; | |
713 | } | |
714 | ||
715 | if ((common_flags & SOCAM_VSYNC_ACTIVE_HIGH) && | |
716 | (common_flags & SOCAM_VSYNC_ACTIVE_LOW)) { | |
717 | if (pcdev->pdata->flags & SH_CEU_FLAG_VSYNC_LOW) | |
718 | common_flags &= ~SOCAM_VSYNC_ACTIVE_HIGH; | |
719 | else | |
720 | common_flags &= ~SOCAM_VSYNC_ACTIVE_LOW; | |
721 | } | |
722 | ||
0d3244d6 MD |
723 | ret = icd->ops->set_bus_param(icd, common_flags); |
724 | if (ret < 0) | |
725 | return ret; | |
726 | ||
727 | switch (common_flags & SOCAM_DATAWIDTH_MASK) { | |
728 | case SOCAM_DATAWIDTH_8: | |
904078f1 | 729 | pcdev->is_16bit = 0; |
0d3244d6 MD |
730 | break; |
731 | case SOCAM_DATAWIDTH_16: | |
904078f1 | 732 | pcdev->is_16bit = 1; |
0d3244d6 MD |
733 | break; |
734 | default: | |
735 | return -EINVAL; | |
736 | } | |
737 | ||
738 | ceu_write(pcdev, CRCNTR, 0); | |
739 | ceu_write(pcdev, CRCMPR, 0); | |
740 | ||
8be65dc5 | 741 | value = 0x00000010; /* data fetch by default */ |
961801bb | 742 | yuv_lineskip = 0; |
8be65dc5 | 743 | |
760697be | 744 | switch (icd->current_fmt->host_fmt->fourcc) { |
8be65dc5 MD |
745 | case V4L2_PIX_FMT_NV12: |
746 | case V4L2_PIX_FMT_NV21: | |
747 | yuv_lineskip = 1; /* skip for NV12/21, no skip for NV16/61 */ | |
9e4a56d2 MD |
748 | /* fall-through */ |
749 | case V4L2_PIX_FMT_NV16: | |
750 | case V4L2_PIX_FMT_NV61: | |
760697be | 751 | switch (cam->code) { |
ace6e979 | 752 | case V4L2_MBUS_FMT_UYVY8_2X8: |
8be65dc5 MD |
753 | value = 0x00000000; /* Cb0, Y0, Cr0, Y1 */ |
754 | break; | |
ace6e979 | 755 | case V4L2_MBUS_FMT_VYUY8_2X8: |
8be65dc5 MD |
756 | value = 0x00000100; /* Cr0, Y0, Cb0, Y1 */ |
757 | break; | |
ace6e979 | 758 | case V4L2_MBUS_FMT_YUYV8_2X8: |
8be65dc5 MD |
759 | value = 0x00000200; /* Y0, Cb0, Y1, Cr0 */ |
760 | break; | |
ace6e979 | 761 | case V4L2_MBUS_FMT_YVYU8_2X8: |
8be65dc5 MD |
762 | value = 0x00000300; /* Y0, Cr0, Y1, Cb0 */ |
763 | break; | |
764 | default: | |
765 | BUG(); | |
766 | } | |
767 | } | |
768 | ||
760697be GL |
769 | if (icd->current_fmt->host_fmt->fourcc == V4L2_PIX_FMT_NV21 || |
770 | icd->current_fmt->host_fmt->fourcc == V4L2_PIX_FMT_NV61) | |
9e4a56d2 | 771 | value ^= 0x00000100; /* swap U, V to change from NV1x->NVx1 */ |
8be65dc5 | 772 | |
7a1a8164 MD |
773 | value |= common_flags & SOCAM_VSYNC_ACTIVE_LOW ? 1 << 1 : 0; |
774 | value |= common_flags & SOCAM_HSYNC_ACTIVE_LOW ? 1 << 0 : 0; | |
904078f1 | 775 | value |= pcdev->is_16bit ? 1 << 12 : 0; |
b3b5020d GL |
776 | |
777 | /* CSI2 mode */ | |
778 | if (pcdev->pdata->csi2_dev) | |
779 | value |= 3 << 12; | |
780 | ||
0d3244d6 MD |
781 | ceu_write(pcdev, CAMCR, value); |
782 | ||
783 | ceu_write(pcdev, CAPCR, 0x00300000); | |
1edcc10d KM |
784 | |
785 | switch (pcdev->field) { | |
786 | case V4L2_FIELD_INTERLACED_TB: | |
787 | value = 0x101; | |
788 | break; | |
789 | case V4L2_FIELD_INTERLACED_BT: | |
790 | value = 0x102; | |
791 | break; | |
792 | default: | |
793 | value = 0; | |
794 | break; | |
795 | } | |
796 | ceu_write(pcdev, CAIFR, value); | |
0d3244d6 | 797 | |
e622681d | 798 | sh_mobile_ceu_set_rect(icd); |
0d3244d6 MD |
799 | mdelay(1); |
800 | ||
e622681d | 801 | dev_geo(icd->dev.parent, "CFLCR 0x%x\n", pcdev->cflcr); |
961801bb | 802 | ceu_write(pcdev, CFLCR, pcdev->cflcr); |
dd54203b | 803 | |
5d28d525 GL |
804 | /* |
805 | * A few words about byte order (observed in Big Endian mode) | |
dd54203b MD |
806 | * |
807 | * In data fetch mode bytes are received in chunks of 8 bytes. | |
808 | * D0, D1, D2, D3, D4, D5, D6, D7 (D0 received first) | |
809 | * | |
810 | * The data is however by default written to memory in reverse order: | |
811 | * D7, D6, D5, D4, D3, D2, D1, D0 (D7 written to lowest byte) | |
812 | * | |
813 | * The lowest three bits of CDOCR allows us to do swapping, | |
2c0a072e MD |
814 | * using 7 we swap the data bytes to match the incoming order: |
815 | * D0, D1, D2, D3, D4, D5, D6, D7 | |
dd54203b | 816 | */ |
8be65dc5 MD |
817 | value = 0x00000017; |
818 | if (yuv_lineskip) | |
819 | value &= ~0x00000010; /* convert 4:2:2 -> 4:2:0 */ | |
820 | ||
821 | ceu_write(pcdev, CDOCR, value); | |
0d3244d6 MD |
822 | ceu_write(pcdev, CFWCR, 0); /* keep "datafetch firewall" disabled */ |
823 | ||
6a6c8786 | 824 | dev_dbg(icd->dev.parent, "S_FMT successful for %c%c%c%c %ux%u\n", |
904078f1 GL |
825 | pixfmt & 0xff, (pixfmt >> 8) & 0xff, |
826 | (pixfmt >> 16) & 0xff, (pixfmt >> 24) & 0xff, | |
6a6c8786 | 827 | icd->user_width, icd->user_height); |
904078f1 GL |
828 | |
829 | capture_restore(pcdev, capsr); | |
830 | ||
0d3244d6 | 831 | /* not in bundle mode: skip CBDSR, CDAYR2, CDACR2, CDBYR2, CDBCR2 */ |
0d3244d6 MD |
832 | return 0; |
833 | } | |
834 | ||
760697be GL |
835 | static int sh_mobile_ceu_try_bus_param(struct soc_camera_device *icd, |
836 | unsigned char buswidth) | |
0d3244d6 MD |
837 | { |
838 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); | |
839 | struct sh_mobile_ceu_dev *pcdev = ici->priv; | |
840 | unsigned long camera_flags, common_flags; | |
841 | ||
842 | camera_flags = icd->ops->query_bus_param(icd); | |
843 | common_flags = soc_camera_bus_param_compatible(camera_flags, | |
c354b400 | 844 | make_bus_param(pcdev)); |
760697be GL |
845 | if (!common_flags || buswidth > 16 || |
846 | (buswidth > 8 && !(common_flags & SOCAM_DATAWIDTH_16))) | |
0d3244d6 MD |
847 | return -EINVAL; |
848 | ||
849 | return 0; | |
850 | } | |
851 | ||
760697be | 852 | static const struct soc_mbus_pixelfmt sh_mobile_ceu_formats[] = { |
9e4a56d2 | 853 | { |
760697be GL |
854 | .fourcc = V4L2_PIX_FMT_NV12, |
855 | .name = "NV12", | |
856 | .bits_per_sample = 12, | |
857 | .packing = SOC_MBUS_PACKING_NONE, | |
858 | .order = SOC_MBUS_ORDER_LE, | |
859 | }, { | |
860 | .fourcc = V4L2_PIX_FMT_NV21, | |
861 | .name = "NV21", | |
862 | .bits_per_sample = 12, | |
863 | .packing = SOC_MBUS_PACKING_NONE, | |
864 | .order = SOC_MBUS_ORDER_LE, | |
865 | }, { | |
866 | .fourcc = V4L2_PIX_FMT_NV16, | |
867 | .name = "NV16", | |
868 | .bits_per_sample = 16, | |
869 | .packing = SOC_MBUS_PACKING_NONE, | |
870 | .order = SOC_MBUS_ORDER_LE, | |
871 | }, { | |
872 | .fourcc = V4L2_PIX_FMT_NV61, | |
873 | .name = "NV61", | |
874 | .bits_per_sample = 16, | |
875 | .packing = SOC_MBUS_PACKING_NONE, | |
876 | .order = SOC_MBUS_ORDER_LE, | |
9e4a56d2 | 877 | }, |
8be65dc5 MD |
878 | }; |
879 | ||
760697be GL |
880 | /* This will be corrected as we get more formats */ |
881 | static bool sh_mobile_ceu_packing_supported(const struct soc_mbus_pixelfmt *fmt) | |
882 | { | |
883 | return fmt->packing == SOC_MBUS_PACKING_NONE || | |
884 | (fmt->bits_per_sample == 8 && | |
885 | fmt->packing == SOC_MBUS_PACKING_2X8_PADHI) || | |
886 | (fmt->bits_per_sample > 8 && | |
887 | fmt->packing == SOC_MBUS_PACKING_EXTEND16); | |
888 | } | |
889 | ||
e622681d GL |
890 | static int client_g_rect(struct v4l2_subdev *sd, struct v4l2_rect *rect); |
891 | ||
3805f201 | 892 | static int sh_mobile_ceu_get_formats(struct soc_camera_device *icd, unsigned int idx, |
9414de39 MD |
893 | struct soc_camera_format_xlate *xlate) |
894 | { | |
760697be | 895 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
6a6c8786 | 896 | struct device *dev = icd->dev.parent; |
b3b5020d GL |
897 | struct soc_camera_host *ici = to_soc_camera_host(dev); |
898 | struct sh_mobile_ceu_dev *pcdev = ici->priv; | |
8be65dc5 | 899 | int ret, k, n; |
9414de39 | 900 | int formats = 0; |
904078f1 | 901 | struct sh_mobile_ceu_cam *cam; |
760697be GL |
902 | enum v4l2_mbus_pixelcode code; |
903 | const struct soc_mbus_pixelfmt *fmt; | |
9414de39 | 904 | |
760697be GL |
905 | ret = v4l2_subdev_call(sd, video, enum_mbus_fmt, idx, &code); |
906 | if (ret < 0) | |
907 | /* No more formats */ | |
908 | return 0; | |
909 | ||
910 | fmt = soc_mbus_get_fmtdesc(code); | |
911 | if (!fmt) { | |
b3b5020d | 912 | dev_err(dev, "Invalid format code #%u: %d\n", idx, code); |
760697be GL |
913 | return -EINVAL; |
914 | } | |
915 | ||
b3b5020d GL |
916 | if (!pcdev->pdata->csi2_dev) { |
917 | ret = sh_mobile_ceu_try_bus_param(icd, fmt->bits_per_sample); | |
918 | if (ret < 0) | |
919 | return 0; | |
920 | } | |
9414de39 | 921 | |
904078f1 | 922 | if (!icd->host_priv) { |
e622681d GL |
923 | struct v4l2_mbus_framefmt mf; |
924 | struct v4l2_rect rect; | |
e622681d GL |
925 | int shift = 0; |
926 | ||
927 | /* FIXME: subwindow is lost between close / open */ | |
928 | ||
929 | /* Cache current client geometry */ | |
930 | ret = client_g_rect(sd, &rect); | |
931 | if (ret < 0) | |
932 | return ret; | |
933 | ||
934 | /* First time */ | |
935 | ret = v4l2_subdev_call(sd, video, g_mbus_fmt, &mf); | |
936 | if (ret < 0) | |
937 | return ret; | |
938 | ||
939 | while ((mf.width > 2560 || mf.height > 1920) && shift < 4) { | |
940 | /* Try 2560x1920, 1280x960, 640x480, 320x240 */ | |
941 | mf.width = 2560 >> shift; | |
942 | mf.height = 1920 >> shift; | |
b3b5020d GL |
943 | ret = v4l2_device_call_until_err(sd->v4l2_dev, 0, video, |
944 | s_mbus_fmt, &mf); | |
e622681d GL |
945 | if (ret < 0) |
946 | return ret; | |
947 | shift++; | |
948 | } | |
949 | ||
950 | if (shift == 4) { | |
951 | dev_err(dev, "Failed to configure the client below %ux%x\n", | |
952 | mf.width, mf.height); | |
953 | return -EIO; | |
954 | } | |
955 | ||
956 | dev_geo(dev, "camera fmt %ux%u\n", mf.width, mf.height); | |
957 | ||
904078f1 GL |
958 | cam = kzalloc(sizeof(*cam), GFP_KERNEL); |
959 | if (!cam) | |
960 | return -ENOMEM; | |
961 | ||
e622681d GL |
962 | /* We are called with current camera crop, initialise subrect with it */ |
963 | cam->rect = rect; | |
964 | cam->subrect = rect; | |
965 | ||
966 | cam->width = mf.width; | |
967 | cam->height = mf.height; | |
968 | ||
969 | cam->width = mf.width; | |
970 | cam->height = mf.height; | |
971 | ||
904078f1 GL |
972 | icd->host_priv = cam; |
973 | } else { | |
974 | cam = icd->host_priv; | |
975 | } | |
976 | ||
c8329acc GL |
977 | /* Beginning of a pass */ |
978 | if (!idx) | |
904078f1 | 979 | cam->extra_fmt = NULL; |
c8329acc | 980 | |
760697be | 981 | switch (code) { |
ace6e979 GL |
982 | case V4L2_MBUS_FMT_UYVY8_2X8: |
983 | case V4L2_MBUS_FMT_VYUY8_2X8: | |
984 | case V4L2_MBUS_FMT_YUYV8_2X8: | |
985 | case V4L2_MBUS_FMT_YVYU8_2X8: | |
904078f1 | 986 | if (cam->extra_fmt) |
760697be | 987 | break; |
c8329acc GL |
988 | |
989 | /* | |
990 | * Our case is simple so far: for any of the above four camera | |
991 | * formats we add all our four synthesized NV* formats, so, | |
992 | * just marking the device with a single flag suffices. If | |
993 | * the format generation rules are more complex, you would have | |
994 | * to actually hang your already added / counted formats onto | |
995 | * the host_priv pointer and check whether the format you're | |
996 | * going to add now is already there. | |
997 | */ | |
760697be | 998 | cam->extra_fmt = sh_mobile_ceu_formats; |
c8329acc | 999 | |
8be65dc5 MD |
1000 | n = ARRAY_SIZE(sh_mobile_ceu_formats); |
1001 | formats += n; | |
1002 | for (k = 0; xlate && k < n; k++) { | |
760697be GL |
1003 | xlate->host_fmt = &sh_mobile_ceu_formats[k]; |
1004 | xlate->code = code; | |
8be65dc5 | 1005 | xlate++; |
760697be GL |
1006 | dev_dbg(dev, "Providing format %s using code %d\n", |
1007 | sh_mobile_ceu_formats[k].name, code); | |
8be65dc5 | 1008 | } |
760697be | 1009 | break; |
9414de39 | 1010 | default: |
760697be GL |
1011 | if (!sh_mobile_ceu_packing_supported(fmt)) |
1012 | return 0; | |
1013 | } | |
1014 | ||
1015 | /* Generic pass-through */ | |
1016 | formats++; | |
1017 | if (xlate) { | |
1018 | xlate->host_fmt = fmt; | |
1019 | xlate->code = code; | |
1020 | xlate++; | |
1021 | dev_dbg(dev, "Providing format %s in pass-through mode\n", | |
e53a4805 | 1022 | fmt->name); |
9414de39 MD |
1023 | } |
1024 | ||
1025 | return formats; | |
1026 | } | |
1027 | ||
904078f1 GL |
1028 | static void sh_mobile_ceu_put_formats(struct soc_camera_device *icd) |
1029 | { | |
1030 | kfree(icd->host_priv); | |
1031 | icd->host_priv = NULL; | |
1032 | } | |
1033 | ||
961801bb | 1034 | /* Check if any dimension of r1 is smaller than respective one of r2 */ |
904078f1 GL |
1035 | static bool is_smaller(struct v4l2_rect *r1, struct v4l2_rect *r2) |
1036 | { | |
1037 | return r1->width < r2->width || r1->height < r2->height; | |
1038 | } | |
1039 | ||
961801bb GL |
1040 | /* Check if r1 fails to cover r2 */ |
1041 | static bool is_inside(struct v4l2_rect *r1, struct v4l2_rect *r2) | |
1042 | { | |
1043 | return r1->left > r2->left || r1->top > r2->top || | |
1044 | r1->left + r1->width < r2->left + r2->width || | |
1045 | r1->top + r1->height < r2->top + r2->height; | |
1046 | } | |
1047 | ||
6a6c8786 GL |
1048 | static unsigned int scale_down(unsigned int size, unsigned int scale) |
1049 | { | |
1050 | return (size * 4096 + scale / 2) / scale; | |
1051 | } | |
1052 | ||
6a6c8786 GL |
1053 | static unsigned int calc_generic_scale(unsigned int input, unsigned int output) |
1054 | { | |
1055 | return (input * 4096 + output / 2) / output; | |
1056 | } | |
1057 | ||
e622681d | 1058 | /* Get and store current client crop */ |
6a6c8786 GL |
1059 | static int client_g_rect(struct v4l2_subdev *sd, struct v4l2_rect *rect) |
1060 | { | |
1061 | struct v4l2_crop crop; | |
1062 | struct v4l2_cropcap cap; | |
1063 | int ret; | |
1064 | ||
1065 | crop.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; | |
1066 | ||
1067 | ret = v4l2_subdev_call(sd, video, g_crop, &crop); | |
1068 | if (!ret) { | |
1069 | *rect = crop.c; | |
1070 | return ret; | |
1071 | } | |
1072 | ||
1073 | /* Camera driver doesn't support .g_crop(), assume default rectangle */ | |
1074 | cap.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; | |
1075 | ||
1076 | ret = v4l2_subdev_call(sd, video, cropcap, &cap); | |
e622681d GL |
1077 | if (!ret) |
1078 | *rect = cap.defrect; | |
6a6c8786 GL |
1079 | |
1080 | return ret; | |
1081 | } | |
1082 | ||
e622681d GL |
1083 | /* Client crop has changed, update our sub-rectangle to remain within the area */ |
1084 | static void update_subrect(struct sh_mobile_ceu_cam *cam) | |
1085 | { | |
1086 | struct v4l2_rect *rect = &cam->rect, *subrect = &cam->subrect; | |
1087 | ||
1088 | if (rect->width < subrect->width) | |
1089 | subrect->width = rect->width; | |
1090 | ||
1091 | if (rect->height < subrect->height) | |
1092 | subrect->height = rect->height; | |
1093 | ||
1094 | if (rect->left > subrect->left) | |
1095 | subrect->left = rect->left; | |
1096 | else if (rect->left + rect->width > | |
1097 | subrect->left + subrect->width) | |
1098 | subrect->left = rect->left + rect->width - | |
1099 | subrect->width; | |
1100 | ||
1101 | if (rect->top > subrect->top) | |
1102 | subrect->top = rect->top; | |
1103 | else if (rect->top + rect->height > | |
1104 | subrect->top + subrect->height) | |
1105 | subrect->top = rect->top + rect->height - | |
1106 | subrect->height; | |
1107 | } | |
1108 | ||
961801bb | 1109 | /* |
6a6c8786 | 1110 | * The common for both scaling and cropping iterative approach is: |
961801bb GL |
1111 | * 1. try if the client can produce exactly what requested by the user |
1112 | * 2. if (1) failed, try to double the client image until we get one big enough | |
1113 | * 3. if (2) failed, try to request the maximum image | |
1114 | */ | |
e622681d | 1115 | static int client_s_crop(struct soc_camera_device *icd, struct v4l2_crop *crop, |
6a6c8786 | 1116 | struct v4l2_crop *cam_crop) |
09e231b3 | 1117 | { |
e622681d | 1118 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
6a6c8786 GL |
1119 | struct v4l2_rect *rect = &crop->c, *cam_rect = &cam_crop->c; |
1120 | struct device *dev = sd->v4l2_dev->dev; | |
e622681d | 1121 | struct sh_mobile_ceu_cam *cam = icd->host_priv; |
6a6c8786 | 1122 | struct v4l2_cropcap cap; |
904078f1 | 1123 | int ret; |
6a6c8786 | 1124 | unsigned int width, height; |
904078f1 | 1125 | |
6a6c8786 GL |
1126 | v4l2_subdev_call(sd, video, s_crop, crop); |
1127 | ret = client_g_rect(sd, cam_rect); | |
1128 | if (ret < 0) | |
1129 | return ret; | |
961801bb | 1130 | |
6a6c8786 GL |
1131 | /* |
1132 | * Now cam_crop contains the current camera input rectangle, and it must | |
1133 | * be within camera cropcap bounds | |
1134 | */ | |
1135 | if (!memcmp(rect, cam_rect, sizeof(*rect))) { | |
1136 | /* Even if camera S_CROP failed, but camera rectangle matches */ | |
e26b3144 | 1137 | dev_dbg(dev, "Camera S_CROP successful for %dx%d@%d:%d\n", |
6a6c8786 | 1138 | rect->width, rect->height, rect->left, rect->top); |
e622681d | 1139 | cam->rect = *cam_rect; |
6a6c8786 | 1140 | return 0; |
904078f1 GL |
1141 | } |
1142 | ||
6a6c8786 | 1143 | /* Try to fix cropping, that camera hasn't managed to set */ |
e26b3144 | 1144 | dev_geo(dev, "Fix camera S_CROP for %dx%d@%d:%d to %dx%d@%d:%d\n", |
6a6c8786 | 1145 | cam_rect->width, cam_rect->height, |
08590b96 | 1146 | cam_rect->left, cam_rect->top, |
6a6c8786 GL |
1147 | rect->width, rect->height, rect->left, rect->top); |
1148 | ||
1149 | /* We need sensor maximum rectangle */ | |
1150 | ret = v4l2_subdev_call(sd, video, cropcap, &cap); | |
1151 | if (ret < 0) | |
1152 | return ret; | |
1153 | ||
e622681d | 1154 | /* Put user requested rectangle within sensor bounds */ |
6a6c8786 GL |
1155 | soc_camera_limit_side(&rect->left, &rect->width, cap.bounds.left, 2, |
1156 | cap.bounds.width); | |
1157 | soc_camera_limit_side(&rect->top, &rect->height, cap.bounds.top, 4, | |
1158 | cap.bounds.height); | |
904078f1 GL |
1159 | |
1160 | /* | |
1161 | * Popular special case - some cameras can only handle fixed sizes like | |
1162 | * QVGA, VGA,... Take care to avoid infinite loop. | |
1163 | */ | |
6a6c8786 GL |
1164 | width = max(cam_rect->width, 2); |
1165 | height = max(cam_rect->height, 2); | |
1166 | ||
e622681d GL |
1167 | /* |
1168 | * Loop as long as sensor is not covering the requested rectangle and | |
1169 | * is still within its bounds | |
1170 | */ | |
6a6c8786 GL |
1171 | while (!ret && (is_smaller(cam_rect, rect) || |
1172 | is_inside(cam_rect, rect)) && | |
1173 | (cap.bounds.width > width || cap.bounds.height > height)) { | |
961801bb GL |
1174 | |
1175 | width *= 2; | |
1176 | height *= 2; | |
6a6c8786 | 1177 | |
08590b96 GL |
1178 | cam_rect->width = width; |
1179 | cam_rect->height = height; | |
904078f1 | 1180 | |
6a6c8786 GL |
1181 | /* |
1182 | * We do not know what capabilities the camera has to set up | |
1183 | * left and top borders. We could try to be smarter in iterating | |
1184 | * them, e.g., if camera current left is to the right of the | |
1185 | * target left, set it to the middle point between the current | |
1186 | * left and minimum left. But that would add too much | |
1187 | * complexity: we would have to iterate each border separately. | |
e622681d | 1188 | * Instead we just drop to the left and top bounds. |
6a6c8786 GL |
1189 | */ |
1190 | if (cam_rect->left > rect->left) | |
1191 | cam_rect->left = cap.bounds.left; | |
961801bb | 1192 | |
6a6c8786 GL |
1193 | if (cam_rect->left + cam_rect->width < rect->left + rect->width) |
1194 | cam_rect->width = rect->left + rect->width - | |
08590b96 | 1195 | cam_rect->left; |
961801bb | 1196 | |
6a6c8786 GL |
1197 | if (cam_rect->top > rect->top) |
1198 | cam_rect->top = cap.bounds.top; | |
961801bb | 1199 | |
6a6c8786 GL |
1200 | if (cam_rect->top + cam_rect->height < rect->top + rect->height) |
1201 | cam_rect->height = rect->top + rect->height - | |
08590b96 | 1202 | cam_rect->top; |
961801bb | 1203 | |
6a6c8786 GL |
1204 | v4l2_subdev_call(sd, video, s_crop, cam_crop); |
1205 | ret = client_g_rect(sd, cam_rect); | |
e26b3144 | 1206 | dev_geo(dev, "Camera S_CROP %d for %dx%d@%d:%d\n", ret, |
6a6c8786 | 1207 | cam_rect->width, cam_rect->height, |
08590b96 | 1208 | cam_rect->left, cam_rect->top); |
904078f1 GL |
1209 | } |
1210 | ||
6a6c8786 GL |
1211 | /* S_CROP must not modify the rectangle */ |
1212 | if (is_smaller(cam_rect, rect) || is_inside(cam_rect, rect)) { | |
904078f1 GL |
1213 | /* |
1214 | * The camera failed to configure a suitable cropping, | |
1215 | * we cannot use the current rectangle, set to max | |
1216 | */ | |
6a6c8786 GL |
1217 | *cam_rect = cap.bounds; |
1218 | v4l2_subdev_call(sd, video, s_crop, cam_crop); | |
1219 | ret = client_g_rect(sd, cam_rect); | |
e26b3144 | 1220 | dev_geo(dev, "Camera S_CROP %d for max %dx%d@%d:%d\n", ret, |
6a6c8786 | 1221 | cam_rect->width, cam_rect->height, |
08590b96 | 1222 | cam_rect->left, cam_rect->top); |
904078f1 GL |
1223 | } |
1224 | ||
e622681d GL |
1225 | if (!ret) { |
1226 | cam->rect = *cam_rect; | |
1227 | update_subrect(cam); | |
6a6c8786 GL |
1228 | } |
1229 | ||
e622681d | 1230 | return ret; |
6a6c8786 GL |
1231 | } |
1232 | ||
e622681d | 1233 | /* Iterative s_mbus_fmt, also updates cached client crop on success */ |
760697be GL |
1234 | static int client_s_fmt(struct soc_camera_device *icd, |
1235 | struct v4l2_mbus_framefmt *mf, bool ceu_can_scale) | |
6a6c8786 | 1236 | { |
e622681d | 1237 | struct sh_mobile_ceu_cam *cam = icd->host_priv; |
6a6c8786 GL |
1238 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
1239 | struct device *dev = icd->dev.parent; | |
760697be | 1240 | unsigned int width = mf->width, height = mf->height, tmp_w, tmp_h; |
6a6c8786 GL |
1241 | unsigned int max_width, max_height; |
1242 | struct v4l2_cropcap cap; | |
1243 | int ret; | |
1244 | ||
b3b5020d GL |
1245 | ret = v4l2_device_call_until_err(sd->v4l2_dev, 0, video, |
1246 | s_mbus_fmt, mf); | |
e622681d GL |
1247 | if (ret < 0) |
1248 | return ret; | |
1249 | ||
1250 | dev_geo(dev, "camera scaled to %ux%u\n", mf->width, mf->height); | |
1251 | ||
1252 | if ((width == mf->width && height == mf->height) || !ceu_can_scale) | |
1253 | goto update_cache; | |
1254 | ||
6a6c8786 GL |
1255 | cap.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; |
1256 | ||
1257 | ret = v4l2_subdev_call(sd, video, cropcap, &cap); | |
1258 | if (ret < 0) | |
1259 | return ret; | |
1260 | ||
1261 | max_width = min(cap.bounds.width, 2560); | |
1262 | max_height = min(cap.bounds.height, 1920); | |
1263 | ||
6a6c8786 | 1264 | /* Camera set a format, but geometry is not precise, try to improve */ |
760697be GL |
1265 | tmp_w = mf->width; |
1266 | tmp_h = mf->height; | |
6a6c8786 GL |
1267 | |
1268 | /* width <= max_width && height <= max_height - guaranteed by try_fmt */ | |
1269 | while ((width > tmp_w || height > tmp_h) && | |
1270 | tmp_w < max_width && tmp_h < max_height) { | |
1271 | tmp_w = min(2 * tmp_w, max_width); | |
1272 | tmp_h = min(2 * tmp_h, max_height); | |
760697be GL |
1273 | mf->width = tmp_w; |
1274 | mf->height = tmp_h; | |
b3b5020d GL |
1275 | ret = v4l2_device_call_until_err(sd->v4l2_dev, 0, video, |
1276 | s_mbus_fmt, mf); | |
6a6c8786 | 1277 | dev_geo(dev, "Camera scaled to %ux%u\n", |
760697be | 1278 | mf->width, mf->height); |
6a6c8786 GL |
1279 | if (ret < 0) { |
1280 | /* This shouldn't happen */ | |
1281 | dev_err(dev, "Client failed to set format: %d\n", ret); | |
1282 | return ret; | |
1283 | } | |
1284 | } | |
1285 | ||
e622681d GL |
1286 | update_cache: |
1287 | /* Update cache */ | |
1288 | ret = client_g_rect(sd, &cam->rect); | |
1289 | if (ret < 0) | |
1290 | return ret; | |
1291 | ||
1292 | update_subrect(cam); | |
1293 | ||
6a6c8786 GL |
1294 | return 0; |
1295 | } | |
1296 | ||
1297 | /** | |
e622681d GL |
1298 | * @width - on output: user width, mapped back to input |
1299 | * @height - on output: user height, mapped back to input | |
1300 | * @mf - in- / output camera output window | |
6a6c8786 | 1301 | */ |
e622681d GL |
1302 | static int client_scale(struct soc_camera_device *icd, |
1303 | struct v4l2_mbus_framefmt *mf, | |
1304 | unsigned int *width, unsigned int *height, | |
1305 | bool ceu_can_scale) | |
6a6c8786 | 1306 | { |
6a6c8786 GL |
1307 | struct sh_mobile_ceu_cam *cam = icd->host_priv; |
1308 | struct device *dev = icd->dev.parent; | |
760697be | 1309 | struct v4l2_mbus_framefmt mf_tmp = *mf; |
6a6c8786 GL |
1310 | unsigned int scale_h, scale_v; |
1311 | int ret; | |
1312 | ||
e622681d GL |
1313 | /* |
1314 | * 5. Apply iterative camera S_FMT for camera user window (also updates | |
1315 | * client crop cache and the imaginary sub-rectangle). | |
1316 | */ | |
760697be | 1317 | ret = client_s_fmt(icd, &mf_tmp, ceu_can_scale); |
6a6c8786 GL |
1318 | if (ret < 0) |
1319 | return ret; | |
1320 | ||
1321 | dev_geo(dev, "5: camera scaled to %ux%u\n", | |
760697be | 1322 | mf_tmp.width, mf_tmp.height); |
6a6c8786 GL |
1323 | |
1324 | /* 6. Retrieve camera output window (g_fmt) */ | |
1325 | ||
760697be | 1326 | /* unneeded - it is already in "mf_tmp" */ |
6a6c8786 | 1327 | |
e622681d GL |
1328 | /* 7. Calculate new client scales. */ |
1329 | scale_h = calc_generic_scale(cam->rect.width, mf_tmp.width); | |
1330 | scale_v = calc_generic_scale(cam->rect.height, mf_tmp.height); | |
6a6c8786 | 1331 | |
760697be GL |
1332 | mf->width = mf_tmp.width; |
1333 | mf->height = mf_tmp.height; | |
1334 | mf->colorspace = mf_tmp.colorspace; | |
904078f1 GL |
1335 | |
1336 | /* | |
6a6c8786 | 1337 | * 8. Calculate new CEU crop - apply camera scales to previously |
e622681d | 1338 | * updated "effective" crop. |
904078f1 | 1339 | */ |
e622681d GL |
1340 | *width = scale_down(cam->subrect.width, scale_h); |
1341 | *height = scale_down(cam->subrect.height, scale_v); | |
6a6c8786 | 1342 | |
e622681d | 1343 | dev_geo(dev, "8: new client sub-window %ux%u\n", *width, *height); |
6a6c8786 GL |
1344 | |
1345 | return 0; | |
1346 | } | |
1347 | ||
1348 | /* | |
1349 | * CEU can scale and crop, but we don't want to waste bandwidth and kill the | |
1350 | * framerate by always requesting the maximum image from the client. See | |
1351 | * Documentation/video4linux/sh_mobile_camera_ceu.txt for a description of | |
1352 | * scaling and cropping algorithms and for the meaning of referenced here steps. | |
1353 | */ | |
1354 | static int sh_mobile_ceu_set_crop(struct soc_camera_device *icd, | |
1355 | struct v4l2_crop *a) | |
1356 | { | |
1357 | struct v4l2_rect *rect = &a->c; | |
1358 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); | |
1359 | struct sh_mobile_ceu_dev *pcdev = ici->priv; | |
1360 | struct v4l2_crop cam_crop; | |
1361 | struct sh_mobile_ceu_cam *cam = icd->host_priv; | |
e622681d | 1362 | struct v4l2_rect *cam_rect = &cam_crop.c; |
6a6c8786 GL |
1363 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
1364 | struct device *dev = icd->dev.parent; | |
760697be | 1365 | struct v4l2_mbus_framefmt mf; |
e622681d GL |
1366 | unsigned int scale_cam_h, scale_cam_v, scale_ceu_h, scale_ceu_v, |
1367 | out_width, out_height, scale_h, scale_v; | |
1368 | int interm_width, interm_height; | |
6a6c8786 GL |
1369 | u32 capsr, cflcr; |
1370 | int ret; | |
1371 | ||
e622681d GL |
1372 | dev_geo(dev, "S_CROP(%ux%u@%u:%u)\n", rect->width, rect->height, |
1373 | rect->left, rect->top); | |
6a6c8786 | 1374 | |
e622681d GL |
1375 | /* During camera cropping its output window can change too, stop CEU */ |
1376 | capsr = capture_save_reset(pcdev); | |
1377 | dev_dbg(dev, "CAPSR 0x%x, CFLCR 0x%x\n", capsr, pcdev->cflcr); | |
6a6c8786 | 1378 | |
e622681d GL |
1379 | /* 1. - 2. Apply iterative camera S_CROP for new input window. */ |
1380 | ret = client_s_crop(icd, a, &cam_crop); | |
6a6c8786 GL |
1381 | if (ret < 0) |
1382 | return ret; | |
1383 | ||
e622681d | 1384 | dev_geo(dev, "1-2: camera cropped to %ux%u@%u:%u\n", |
6a6c8786 GL |
1385 | cam_rect->width, cam_rect->height, |
1386 | cam_rect->left, cam_rect->top); | |
1387 | ||
1388 | /* On success cam_crop contains current camera crop */ | |
1389 | ||
e622681d GL |
1390 | /* 3. Retrieve camera output window */ |
1391 | ret = v4l2_subdev_call(sd, video, g_mbus_fmt, &mf); | |
1392 | if (ret < 0) | |
1393 | return ret; | |
6a6c8786 | 1394 | |
e622681d GL |
1395 | if (mf.width > 2560 || mf.height > 1920) |
1396 | return -EINVAL; | |
6a6c8786 | 1397 | |
e622681d GL |
1398 | /* Cache camera output window */ |
1399 | cam->width = mf.width; | |
1400 | cam->height = mf.height; | |
6a6c8786 | 1401 | |
e622681d GL |
1402 | /* 4. Calculate camera scales */ |
1403 | scale_cam_h = calc_generic_scale(cam_rect->width, mf.width); | |
1404 | scale_cam_v = calc_generic_scale(cam_rect->height, mf.height); | |
6a6c8786 | 1405 | |
e622681d GL |
1406 | /* Calculate intermediate window */ |
1407 | interm_width = scale_down(rect->width, scale_cam_h); | |
1408 | interm_height = scale_down(rect->height, scale_cam_v); | |
6a6c8786 | 1409 | |
e622681d GL |
1410 | if (pcdev->image_mode) { |
1411 | out_width = min(interm_width, icd->user_width); | |
1412 | out_height = min(interm_height, icd->user_height); | |
1413 | } else { | |
1414 | out_width = interm_width; | |
1415 | out_height = interm_height; | |
1416 | } | |
6a6c8786 GL |
1417 | |
1418 | /* | |
e622681d GL |
1419 | * 5. Calculate CEU scales from camera scales from results of (5) and |
1420 | * the user window | |
6a6c8786 | 1421 | */ |
e622681d GL |
1422 | scale_ceu_h = calc_scale(interm_width, &out_width); |
1423 | scale_ceu_v = calc_scale(interm_height, &out_height); | |
6a6c8786 | 1424 | |
e622681d GL |
1425 | /* Calculate camera scales */ |
1426 | scale_h = calc_generic_scale(cam_rect->width, out_width); | |
1427 | scale_v = calc_generic_scale(cam_rect->height, out_height); | |
6a6c8786 | 1428 | |
e622681d GL |
1429 | dev_geo(dev, "5: CEU scales %u:%u\n", scale_ceu_h, scale_ceu_v); |
1430 | ||
1431 | /* Apply CEU scales. */ | |
6a6c8786 GL |
1432 | cflcr = scale_ceu_h | (scale_ceu_v << 16); |
1433 | if (cflcr != pcdev->cflcr) { | |
1434 | pcdev->cflcr = cflcr; | |
1435 | ceu_write(pcdev, CFLCR, cflcr); | |
1436 | } | |
1437 | ||
e622681d GL |
1438 | icd->user_width = out_width; |
1439 | icd->user_height = out_height; | |
1440 | cam->ceu_left = scale_down(rect->left - cam_rect->left, scale_h) & ~1; | |
1441 | cam->ceu_top = scale_down(rect->top - cam_rect->top, scale_v) & ~1; | |
1442 | ||
1443 | /* 6. Use CEU cropping to crop to the new window. */ | |
1444 | sh_mobile_ceu_set_rect(icd); | |
1445 | ||
1446 | cam->subrect = *rect; | |
1447 | ||
1448 | dev_geo(dev, "6: CEU cropped to %ux%u@%u:%u\n", | |
1449 | icd->user_width, icd->user_height, | |
1450 | cam->ceu_left, cam->ceu_top); | |
1451 | ||
6a6c8786 | 1452 | /* Restore capture */ |
904078f1 GL |
1453 | if (pcdev->active) |
1454 | capsr |= 1; | |
904078f1 GL |
1455 | capture_restore(pcdev, capsr); |
1456 | ||
904078f1 GL |
1457 | /* Even if only camera cropping succeeded */ |
1458 | return ret; | |
09e231b3 GL |
1459 | } |
1460 | ||
e622681d GL |
1461 | static int sh_mobile_ceu_get_crop(struct soc_camera_device *icd, |
1462 | struct v4l2_crop *a) | |
1463 | { | |
1464 | struct sh_mobile_ceu_cam *cam = icd->host_priv; | |
1465 | ||
1466 | a->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; | |
1467 | a->c = cam->subrect; | |
1468 | ||
1469 | return 0; | |
1470 | } | |
1471 | ||
1472 | /* | |
1473 | * Calculate real client output window by applying new scales to the current | |
1474 | * client crop. New scales are calculated from the requested output format and | |
1475 | * CEU crop, mapped backed onto the client input (subrect). | |
1476 | */ | |
1477 | static void calculate_client_output(struct soc_camera_device *icd, | |
1478 | struct v4l2_pix_format *pix, struct v4l2_mbus_framefmt *mf) | |
1479 | { | |
1480 | struct sh_mobile_ceu_cam *cam = icd->host_priv; | |
1481 | struct device *dev = icd->dev.parent; | |
1482 | struct v4l2_rect *cam_subrect = &cam->subrect; | |
1483 | unsigned int scale_v, scale_h; | |
1484 | ||
1485 | if (cam_subrect->width == cam->rect.width && | |
1486 | cam_subrect->height == cam->rect.height) { | |
1487 | /* No sub-cropping */ | |
1488 | mf->width = pix->width; | |
1489 | mf->height = pix->height; | |
1490 | return; | |
1491 | } | |
1492 | ||
1493 | /* 1.-2. Current camera scales and subwin - cached. */ | |
1494 | ||
1495 | dev_geo(dev, "2: subwin %ux%u@%u:%u\n", | |
1496 | cam_subrect->width, cam_subrect->height, | |
1497 | cam_subrect->left, cam_subrect->top); | |
1498 | ||
1499 | /* | |
1500 | * 3. Calculate new combined scales from input sub-window to requested | |
1501 | * user window. | |
1502 | */ | |
1503 | ||
1504 | /* | |
1505 | * TODO: CEU cannot scale images larger than VGA to smaller than SubQCIF | |
1506 | * (128x96) or larger than VGA | |
1507 | */ | |
1508 | scale_h = calc_generic_scale(cam_subrect->width, pix->width); | |
1509 | scale_v = calc_generic_scale(cam_subrect->height, pix->height); | |
1510 | ||
1511 | dev_geo(dev, "3: scales %u:%u\n", scale_h, scale_v); | |
1512 | ||
1513 | /* | |
1514 | * 4. Calculate client output window by applying combined scales to real | |
1515 | * input window. | |
1516 | */ | |
1517 | mf->width = scale_down(cam->rect.width, scale_h); | |
1518 | mf->height = scale_down(cam->rect.height, scale_v); | |
1519 | } | |
1520 | ||
961801bb | 1521 | /* Similar to set_crop multistage iterative algorithm */ |
d8fac217 | 1522 | static int sh_mobile_ceu_set_fmt(struct soc_camera_device *icd, |
09e231b3 | 1523 | struct v4l2_format *f) |
0d3244d6 | 1524 | { |
9414de39 | 1525 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); |
961801bb | 1526 | struct sh_mobile_ceu_dev *pcdev = ici->priv; |
904078f1 GL |
1527 | struct sh_mobile_ceu_cam *cam = icd->host_priv; |
1528 | struct v4l2_pix_format *pix = &f->fmt.pix; | |
760697be | 1529 | struct v4l2_mbus_framefmt mf; |
6a6c8786 | 1530 | struct device *dev = icd->dev.parent; |
904078f1 | 1531 | __u32 pixfmt = pix->pixelformat; |
9414de39 | 1532 | const struct soc_camera_format_xlate *xlate; |
b3b5020d GL |
1533 | /* Keep Compiler Happy */ |
1534 | unsigned int ceu_sub_width = 0, ceu_sub_height = 0; | |
6a6c8786 GL |
1535 | u16 scale_v, scale_h; |
1536 | int ret; | |
1edcc10d KM |
1537 | bool image_mode; |
1538 | enum v4l2_field field; | |
961801bb | 1539 | |
e622681d GL |
1540 | dev_geo(dev, "S_FMT(pix=0x%x, %ux%u)\n", pixfmt, pix->width, pix->height); |
1541 | ||
961801bb | 1542 | switch (pix->field) { |
961801bb GL |
1543 | default: |
1544 | pix->field = V4L2_FIELD_NONE; | |
1545 | /* fall-through */ | |
1edcc10d KM |
1546 | case V4L2_FIELD_INTERLACED_TB: |
1547 | case V4L2_FIELD_INTERLACED_BT: | |
961801bb | 1548 | case V4L2_FIELD_NONE: |
1edcc10d KM |
1549 | field = pix->field; |
1550 | break; | |
1551 | case V4L2_FIELD_INTERLACED: | |
1552 | field = V4L2_FIELD_INTERLACED_TB; | |
961801bb GL |
1553 | break; |
1554 | } | |
25c4d74e | 1555 | |
9414de39 MD |
1556 | xlate = soc_camera_xlate_by_fourcc(icd, pixfmt); |
1557 | if (!xlate) { | |
6a6c8786 | 1558 | dev_warn(dev, "Format %x not found\n", pixfmt); |
9414de39 | 1559 | return -EINVAL; |
25c4d74e GL |
1560 | } |
1561 | ||
e622681d GL |
1562 | /* 1.-4. Calculate client output geometry */ |
1563 | calculate_client_output(icd, &f->fmt.pix, &mf); | |
760697be GL |
1564 | mf.field = pix->field; |
1565 | mf.colorspace = pix->colorspace; | |
1566 | mf.code = xlate->code; | |
6a6c8786 | 1567 | |
961801bb GL |
1568 | switch (pixfmt) { |
1569 | case V4L2_PIX_FMT_NV12: | |
1570 | case V4L2_PIX_FMT_NV21: | |
1571 | case V4L2_PIX_FMT_NV16: | |
1572 | case V4L2_PIX_FMT_NV61: | |
6a6c8786 | 1573 | image_mode = true; |
961801bb GL |
1574 | break; |
1575 | default: | |
6a6c8786 | 1576 | image_mode = false; |
9414de39 | 1577 | } |
25c4d74e | 1578 | |
e622681d | 1579 | dev_geo(dev, "4: request camera output %ux%u\n", mf.width, mf.height); |
961801bb | 1580 | |
6a6c8786 | 1581 | /* 5. - 9. */ |
e622681d | 1582 | ret = client_scale(icd, &mf, &ceu_sub_width, &ceu_sub_height, |
1edcc10d | 1583 | image_mode && V4L2_FIELD_NONE == field); |
6a6c8786 | 1584 | |
e622681d | 1585 | dev_geo(dev, "5-9: client scale return %d\n", ret); |
6a6c8786 GL |
1586 | |
1587 | /* Done with the camera. Now see if we can improve the result */ | |
1588 | ||
b3b5020d GL |
1589 | dev_geo(dev, "fmt %ux%u, requested %ux%u\n", |
1590 | mf.width, mf.height, pix->width, pix->height); | |
6a6c8786 GL |
1591 | if (ret < 0) |
1592 | return ret; | |
1593 | ||
760697be GL |
1594 | if (mf.code != xlate->code) |
1595 | return -EINVAL; | |
1596 | ||
e622681d GL |
1597 | /* 9. Prepare CEU crop */ |
1598 | cam->width = mf.width; | |
1599 | cam->height = mf.height; | |
1600 | ||
6a6c8786 | 1601 | /* 10. Use CEU scaling to scale to the requested user window. */ |
961801bb GL |
1602 | |
1603 | /* We cannot scale up */ | |
e622681d GL |
1604 | if (pix->width > ceu_sub_width) |
1605 | ceu_sub_width = pix->width; | |
961801bb | 1606 | |
e622681d GL |
1607 | if (pix->height > ceu_sub_height) |
1608 | ceu_sub_height = pix->height; | |
961801bb | 1609 | |
760697be GL |
1610 | pix->colorspace = mf.colorspace; |
1611 | ||
1612 | if (image_mode) { | |
1613 | /* Scale pix->{width x height} down to width x height */ | |
e622681d GL |
1614 | scale_h = calc_scale(ceu_sub_width, &pix->width); |
1615 | scale_v = calc_scale(ceu_sub_height, &pix->height); | |
760697be | 1616 | } else { |
e622681d GL |
1617 | pix->width = ceu_sub_width; |
1618 | pix->height = ceu_sub_height; | |
1619 | scale_h = 0; | |
1620 | scale_v = 0; | |
760697be | 1621 | } |
961801bb | 1622 | |
e622681d GL |
1623 | pcdev->cflcr = scale_h | (scale_v << 16); |
1624 | ||
1625 | /* | |
1626 | * We have calculated CFLCR, the actual configuration will be performed | |
1627 | * in sh_mobile_ceu_set_bus_param() | |
1628 | */ | |
1629 | ||
6a6c8786 | 1630 | dev_geo(dev, "10: W: %u : 0x%x = %u, H: %u : 0x%x = %u\n", |
e622681d GL |
1631 | ceu_sub_width, scale_h, pix->width, |
1632 | ceu_sub_height, scale_v, pix->height); | |
961801bb | 1633 | |
760697be | 1634 | cam->code = xlate->code; |
760697be | 1635 | icd->current_fmt = xlate; |
961801bb | 1636 | |
1edcc10d | 1637 | pcdev->field = field; |
6a6c8786 | 1638 | pcdev->image_mode = image_mode; |
961801bb GL |
1639 | |
1640 | return 0; | |
0d3244d6 MD |
1641 | } |
1642 | ||
d8fac217 GL |
1643 | static int sh_mobile_ceu_try_fmt(struct soc_camera_device *icd, |
1644 | struct v4l2_format *f) | |
0d3244d6 | 1645 | { |
9414de39 | 1646 | const struct soc_camera_format_xlate *xlate; |
904078f1 | 1647 | struct v4l2_pix_format *pix = &f->fmt.pix; |
c9c1f1c0 | 1648 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
760697be | 1649 | struct v4l2_mbus_framefmt mf; |
904078f1 | 1650 | __u32 pixfmt = pix->pixelformat; |
961801bb | 1651 | int width, height; |
ccab8a29 | 1652 | int ret; |
a2c8c68c | 1653 | |
b3b5020d GL |
1654 | dev_geo(icd->dev.parent, "TRY_FMT(pix=0x%x, %ux%u)\n", |
1655 | pixfmt, pix->width, pix->height); | |
1656 | ||
9414de39 MD |
1657 | xlate = soc_camera_xlate_by_fourcc(icd, pixfmt); |
1658 | if (!xlate) { | |
0166b743 | 1659 | dev_warn(icd->dev.parent, "Format %x not found\n", pixfmt); |
25c4d74e | 1660 | return -EINVAL; |
9414de39 | 1661 | } |
25c4d74e | 1662 | |
0d3244d6 MD |
1663 | /* FIXME: calculate using depth and bus width */ |
1664 | ||
904078f1 GL |
1665 | v4l_bound_align_image(&pix->width, 2, 2560, 1, |
1666 | &pix->height, 4, 1920, 2, 0); | |
0d3244d6 | 1667 | |
961801bb GL |
1668 | width = pix->width; |
1669 | height = pix->height; | |
1670 | ||
760697be | 1671 | pix->bytesperline = soc_mbus_bytes_per_line(width, xlate->host_fmt); |
981cbef2 | 1672 | if ((int)pix->bytesperline < 0) |
760697be GL |
1673 | return pix->bytesperline; |
1674 | pix->sizeimage = height * pix->bytesperline; | |
979ea1dd | 1675 | |
0d3244d6 | 1676 | /* limit to sensor capabilities */ |
760697be GL |
1677 | mf.width = pix->width; |
1678 | mf.height = pix->height; | |
1679 | mf.field = pix->field; | |
1680 | mf.code = xlate->code; | |
1681 | mf.colorspace = pix->colorspace; | |
1682 | ||
b3b5020d | 1683 | ret = v4l2_device_call_until_err(sd->v4l2_dev, 0, video, try_mbus_fmt, &mf); |
ccab8a29 KM |
1684 | if (ret < 0) |
1685 | return ret; | |
1686 | ||
760697be GL |
1687 | pix->width = mf.width; |
1688 | pix->height = mf.height; | |
1689 | pix->field = mf.field; | |
1690 | pix->colorspace = mf.colorspace; | |
1691 | ||
961801bb GL |
1692 | switch (pixfmt) { |
1693 | case V4L2_PIX_FMT_NV12: | |
1694 | case V4L2_PIX_FMT_NV21: | |
1695 | case V4L2_PIX_FMT_NV16: | |
1696 | case V4L2_PIX_FMT_NV61: | |
1697 | /* FIXME: check against rect_max after converting soc-camera */ | |
1698 | /* We can scale precisely, need a bigger image from camera */ | |
1699 | if (pix->width < width || pix->height < height) { | |
760697be GL |
1700 | /* |
1701 | * We presume, the sensor behaves sanely, i.e., if | |
1702 | * requested a bigger rectangle, it will not return a | |
1703 | * smaller one. | |
1704 | */ | |
1705 | mf.width = 2560; | |
1706 | mf.height = 1920; | |
b3b5020d GL |
1707 | ret = v4l2_device_call_until_err(sd->v4l2_dev, 0, video, |
1708 | try_mbus_fmt, &mf); | |
961801bb GL |
1709 | if (ret < 0) { |
1710 | /* Shouldn't actually happen... */ | |
0166b743 | 1711 | dev_err(icd->dev.parent, |
760697be GL |
1712 | "FIXME: client try_fmt() = %d\n", ret); |
1713 | return ret; | |
961801bb GL |
1714 | } |
1715 | } | |
760697be GL |
1716 | /* We will scale exactly */ |
1717 | if (mf.width > width) | |
961801bb | 1718 | pix->width = width; |
760697be | 1719 | if (mf.height > height) |
961801bb | 1720 | pix->height = height; |
ccab8a29 KM |
1721 | } |
1722 | ||
b3b5020d GL |
1723 | dev_geo(icd->dev.parent, "%s(): return %d, fmt 0x%x, %ux%u\n", |
1724 | __func__, ret, pix->pixelformat, pix->width, pix->height); | |
1725 | ||
ccab8a29 | 1726 | return ret; |
0d3244d6 MD |
1727 | } |
1728 | ||
57bee29d | 1729 | static int sh_mobile_ceu_reqbufs(struct soc_camera_device *icd, |
0d3244d6 MD |
1730 | struct v4l2_requestbuffers *p) |
1731 | { | |
1732 | int i; | |
1733 | ||
5d28d525 GL |
1734 | /* |
1735 | * This is for locking debugging only. I removed spinlocks and now I | |
0d3244d6 MD |
1736 | * check whether .prepare is ever called on a linked buffer, or whether |
1737 | * a dma IRQ can occur for an in-work or unlinked buffer. Until now | |
5d28d525 GL |
1738 | * it hadn't triggered |
1739 | */ | |
0d3244d6 MD |
1740 | for (i = 0; i < p->count; i++) { |
1741 | struct sh_mobile_ceu_buffer *buf; | |
1742 | ||
57bee29d | 1743 | buf = container_of(icd->vb_vidq.bufs[i], |
0d3244d6 MD |
1744 | struct sh_mobile_ceu_buffer, vb); |
1745 | INIT_LIST_HEAD(&buf->vb.queue); | |
1746 | } | |
1747 | ||
1748 | return 0; | |
1749 | } | |
1750 | ||
1751 | static unsigned int sh_mobile_ceu_poll(struct file *file, poll_table *pt) | |
1752 | { | |
57bee29d | 1753 | struct soc_camera_device *icd = file->private_data; |
0d3244d6 MD |
1754 | struct sh_mobile_ceu_buffer *buf; |
1755 | ||
57bee29d | 1756 | buf = list_entry(icd->vb_vidq.stream.next, |
0d3244d6 MD |
1757 | struct sh_mobile_ceu_buffer, vb.stream); |
1758 | ||
1759 | poll_wait(file, &buf->vb.done, pt); | |
1760 | ||
1761 | if (buf->vb.state == VIDEOBUF_DONE || | |
1762 | buf->vb.state == VIDEOBUF_ERROR) | |
1763 | return POLLIN|POLLRDNORM; | |
1764 | ||
1765 | return 0; | |
1766 | } | |
1767 | ||
1768 | static int sh_mobile_ceu_querycap(struct soc_camera_host *ici, | |
1769 | struct v4l2_capability *cap) | |
1770 | { | |
1771 | strlcpy(cap->card, "SuperH_Mobile_CEU", sizeof(cap->card)); | |
1772 | cap->version = KERNEL_VERSION(0, 0, 5); | |
1773 | cap->capabilities = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING; | |
1774 | return 0; | |
1775 | } | |
1776 | ||
1777 | static void sh_mobile_ceu_init_videobuf(struct videobuf_queue *q, | |
1778 | struct soc_camera_device *icd) | |
1779 | { | |
1780 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); | |
1781 | struct sh_mobile_ceu_dev *pcdev = ici->priv; | |
1782 | ||
1783 | videobuf_queue_dma_contig_init(q, | |
1784 | &sh_mobile_ceu_videobuf_ops, | |
0166b743 | 1785 | icd->dev.parent, &pcdev->lock, |
0d3244d6 | 1786 | V4L2_BUF_TYPE_VIDEO_CAPTURE, |
1edcc10d | 1787 | pcdev->field, |
0d3244d6 | 1788 | sizeof(struct sh_mobile_ceu_buffer), |
e3cfd447 | 1789 | icd, NULL); |
0d3244d6 MD |
1790 | } |
1791 | ||
4a6110bc GL |
1792 | static int sh_mobile_ceu_get_ctrl(struct soc_camera_device *icd, |
1793 | struct v4l2_control *ctrl) | |
1794 | { | |
1795 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); | |
1796 | struct sh_mobile_ceu_dev *pcdev = ici->priv; | |
1797 | u32 val; | |
1798 | ||
1799 | switch (ctrl->id) { | |
1800 | case V4L2_CID_SHARPNESS: | |
1801 | val = ceu_read(pcdev, CLFCR); | |
1802 | ctrl->value = val ^ 1; | |
1803 | return 0; | |
1804 | } | |
1805 | return -ENOIOCTLCMD; | |
1806 | } | |
1807 | ||
1808 | static int sh_mobile_ceu_set_ctrl(struct soc_camera_device *icd, | |
1809 | struct v4l2_control *ctrl) | |
1810 | { | |
1811 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); | |
1812 | struct sh_mobile_ceu_dev *pcdev = ici->priv; | |
1813 | ||
1814 | switch (ctrl->id) { | |
1815 | case V4L2_CID_SHARPNESS: | |
760697be | 1816 | switch (icd->current_fmt->host_fmt->fourcc) { |
4a6110bc GL |
1817 | case V4L2_PIX_FMT_NV12: |
1818 | case V4L2_PIX_FMT_NV21: | |
1819 | case V4L2_PIX_FMT_NV16: | |
1820 | case V4L2_PIX_FMT_NV61: | |
1821 | ceu_write(pcdev, CLFCR, !ctrl->value); | |
1822 | return 0; | |
1823 | } | |
1824 | return -EINVAL; | |
1825 | } | |
1826 | return -ENOIOCTLCMD; | |
1827 | } | |
1828 | ||
1829 | static const struct v4l2_queryctrl sh_mobile_ceu_controls[] = { | |
1830 | { | |
1831 | .id = V4L2_CID_SHARPNESS, | |
1832 | .type = V4L2_CTRL_TYPE_BOOLEAN, | |
1833 | .name = "Low-pass filter", | |
1834 | .minimum = 0, | |
1835 | .maximum = 1, | |
1836 | .step = 1, | |
1837 | .default_value = 0, | |
1838 | }, | |
1839 | }; | |
1840 | ||
0d3244d6 MD |
1841 | static struct soc_camera_host_ops sh_mobile_ceu_host_ops = { |
1842 | .owner = THIS_MODULE, | |
1843 | .add = sh_mobile_ceu_add_device, | |
1844 | .remove = sh_mobile_ceu_remove_device, | |
9414de39 | 1845 | .get_formats = sh_mobile_ceu_get_formats, |
904078f1 | 1846 | .put_formats = sh_mobile_ceu_put_formats, |
e622681d | 1847 | .get_crop = sh_mobile_ceu_get_crop, |
09e231b3 | 1848 | .set_crop = sh_mobile_ceu_set_crop, |
d8fac217 GL |
1849 | .set_fmt = sh_mobile_ceu_set_fmt, |
1850 | .try_fmt = sh_mobile_ceu_try_fmt, | |
4a6110bc GL |
1851 | .set_ctrl = sh_mobile_ceu_set_ctrl, |
1852 | .get_ctrl = sh_mobile_ceu_get_ctrl, | |
0d3244d6 MD |
1853 | .reqbufs = sh_mobile_ceu_reqbufs, |
1854 | .poll = sh_mobile_ceu_poll, | |
1855 | .querycap = sh_mobile_ceu_querycap, | |
0d3244d6 MD |
1856 | .set_bus_param = sh_mobile_ceu_set_bus_param, |
1857 | .init_videobuf = sh_mobile_ceu_init_videobuf, | |
4a6110bc GL |
1858 | .controls = sh_mobile_ceu_controls, |
1859 | .num_controls = ARRAY_SIZE(sh_mobile_ceu_controls), | |
0d3244d6 MD |
1860 | }; |
1861 | ||
b3b5020d GL |
1862 | struct bus_wait { |
1863 | struct notifier_block notifier; | |
1864 | struct completion completion; | |
1865 | struct device *dev; | |
1866 | }; | |
1867 | ||
1868 | static int bus_notify(struct notifier_block *nb, | |
1869 | unsigned long action, void *data) | |
1870 | { | |
1871 | struct device *dev = data; | |
1872 | struct bus_wait *wait = container_of(nb, struct bus_wait, notifier); | |
1873 | ||
1874 | if (wait->dev != dev) | |
1875 | return NOTIFY_DONE; | |
1876 | ||
1877 | switch (action) { | |
1878 | case BUS_NOTIFY_UNBOUND_DRIVER: | |
1879 | /* Protect from module unloading */ | |
1880 | wait_for_completion(&wait->completion); | |
1881 | return NOTIFY_OK; | |
1882 | } | |
1883 | return NOTIFY_DONE; | |
1884 | } | |
1885 | ||
979ea1dd | 1886 | static int __devinit sh_mobile_ceu_probe(struct platform_device *pdev) |
0d3244d6 MD |
1887 | { |
1888 | struct sh_mobile_ceu_dev *pcdev; | |
1889 | struct resource *res; | |
1890 | void __iomem *base; | |
1891 | unsigned int irq; | |
1892 | int err = 0; | |
b3b5020d GL |
1893 | struct bus_wait wait = { |
1894 | .completion = COMPLETION_INITIALIZER_ONSTACK(wait.completion), | |
1895 | .notifier.notifier_call = bus_notify, | |
1896 | }; | |
1897 | struct device *csi2; | |
0d3244d6 MD |
1898 | |
1899 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); | |
1900 | irq = platform_get_irq(pdev, 0); | |
b89fc2e5 | 1901 | if (!res || (int)irq <= 0) { |
0d3244d6 MD |
1902 | dev_err(&pdev->dev, "Not enough CEU platform resources.\n"); |
1903 | err = -ENODEV; | |
1904 | goto exit; | |
1905 | } | |
1906 | ||
1907 | pcdev = kzalloc(sizeof(*pcdev), GFP_KERNEL); | |
1908 | if (!pcdev) { | |
1909 | dev_err(&pdev->dev, "Could not allocate pcdev\n"); | |
1910 | err = -ENOMEM; | |
1911 | goto exit; | |
1912 | } | |
1913 | ||
0d3244d6 MD |
1914 | INIT_LIST_HEAD(&pcdev->capture); |
1915 | spin_lock_init(&pcdev->lock); | |
1916 | ||
1917 | pcdev->pdata = pdev->dev.platform_data; | |
1918 | if (!pcdev->pdata) { | |
1919 | err = -EINVAL; | |
1920 | dev_err(&pdev->dev, "CEU platform data not set.\n"); | |
1921 | goto exit_kfree; | |
1922 | } | |
1923 | ||
eb6c8558 | 1924 | base = ioremap_nocache(res->start, resource_size(res)); |
0d3244d6 MD |
1925 | if (!base) { |
1926 | err = -ENXIO; | |
1927 | dev_err(&pdev->dev, "Unable to ioremap CEU registers.\n"); | |
1928 | goto exit_kfree; | |
1929 | } | |
1930 | ||
1931 | pcdev->irq = irq; | |
1932 | pcdev->base = base; | |
1933 | pcdev->video_limit = 0; /* only enabled if second resource exists */ | |
0d3244d6 MD |
1934 | |
1935 | res = platform_get_resource(pdev, IORESOURCE_MEM, 1); | |
1936 | if (res) { | |
1937 | err = dma_declare_coherent_memory(&pdev->dev, res->start, | |
1938 | res->start, | |
eb6c8558 | 1939 | resource_size(res), |
0d3244d6 MD |
1940 | DMA_MEMORY_MAP | |
1941 | DMA_MEMORY_EXCLUSIVE); | |
1942 | if (!err) { | |
1943 | dev_err(&pdev->dev, "Unable to declare CEU memory.\n"); | |
1944 | err = -ENXIO; | |
1945 | goto exit_iounmap; | |
1946 | } | |
1947 | ||
eb6c8558 | 1948 | pcdev->video_limit = resource_size(res); |
0d3244d6 MD |
1949 | } |
1950 | ||
1951 | /* request irq */ | |
1952 | err = request_irq(pcdev->irq, sh_mobile_ceu_irq, IRQF_DISABLED, | |
af128a10 | 1953 | dev_name(&pdev->dev), pcdev); |
0d3244d6 MD |
1954 | if (err) { |
1955 | dev_err(&pdev->dev, "Unable to register CEU interrupt.\n"); | |
1956 | goto exit_release_mem; | |
1957 | } | |
1958 | ||
6d1386c6 MD |
1959 | pm_suspend_ignore_children(&pdev->dev, true); |
1960 | pm_runtime_enable(&pdev->dev); | |
1961 | pm_runtime_resume(&pdev->dev); | |
a42b6dd6 | 1962 | |
0d3244d6 | 1963 | pcdev->ici.priv = pcdev; |
979ea1dd | 1964 | pcdev->ici.v4l2_dev.dev = &pdev->dev; |
0d3244d6 | 1965 | pcdev->ici.nr = pdev->id; |
af128a10 KS |
1966 | pcdev->ici.drv_name = dev_name(&pdev->dev); |
1967 | pcdev->ici.ops = &sh_mobile_ceu_host_ops; | |
0d3244d6 | 1968 | |
b3b5020d GL |
1969 | /* CSI2 interfacing */ |
1970 | csi2 = pcdev->pdata->csi2_dev; | |
1971 | if (csi2) { | |
1972 | wait.dev = csi2; | |
1973 | ||
1974 | err = bus_register_notifier(&platform_bus_type, &wait.notifier); | |
1975 | if (err < 0) | |
1976 | goto exit_free_clk; | |
1977 | ||
1978 | /* | |
1979 | * From this point the driver module will not unload, until | |
1980 | * we complete the completion. | |
1981 | */ | |
1982 | ||
1983 | if (!csi2->driver || !csi2->driver->owner) { | |
1984 | complete(&wait.completion); | |
1985 | /* Either too late, or probing failed */ | |
1986 | bus_unregister_notifier(&platform_bus_type, &wait.notifier); | |
1987 | err = -ENXIO; | |
1988 | goto exit_free_clk; | |
1989 | } | |
1990 | ||
1991 | /* | |
1992 | * The module is still loaded, in the worst case it is hanging | |
1993 | * in device release on our completion. So, _now_ dereferencing | |
1994 | * the "owner" is safe! | |
1995 | */ | |
1996 | ||
1997 | err = try_module_get(csi2->driver->owner); | |
1998 | ||
1999 | /* Let notifier complete, if it has been locked */ | |
2000 | complete(&wait.completion); | |
2001 | bus_unregister_notifier(&platform_bus_type, &wait.notifier); | |
2002 | if (!err) { | |
2003 | err = -ENODEV; | |
2004 | goto exit_free_clk; | |
2005 | } | |
2006 | } | |
2007 | ||
0d3244d6 MD |
2008 | err = soc_camera_host_register(&pcdev->ici); |
2009 | if (err) | |
b3b5020d | 2010 | goto exit_module_put; |
0d3244d6 MD |
2011 | |
2012 | return 0; | |
2013 | ||
b3b5020d GL |
2014 | exit_module_put: |
2015 | if (csi2 && csi2->driver) | |
2016 | module_put(csi2->driver->owner); | |
055e05a0 KM |
2017 | exit_free_clk: |
2018 | pm_runtime_disable(&pdev->dev); | |
0d3244d6 MD |
2019 | free_irq(pcdev->irq, pcdev); |
2020 | exit_release_mem: | |
2021 | if (platform_get_resource(pdev, IORESOURCE_MEM, 1)) | |
2022 | dma_release_declared_memory(&pdev->dev); | |
2023 | exit_iounmap: | |
2024 | iounmap(base); | |
2025 | exit_kfree: | |
2026 | kfree(pcdev); | |
2027 | exit: | |
2028 | return err; | |
2029 | } | |
2030 | ||
979ea1dd | 2031 | static int __devexit sh_mobile_ceu_remove(struct platform_device *pdev) |
0d3244d6 | 2032 | { |
eff505fa GL |
2033 | struct soc_camera_host *soc_host = to_soc_camera_host(&pdev->dev); |
2034 | struct sh_mobile_ceu_dev *pcdev = container_of(soc_host, | |
2035 | struct sh_mobile_ceu_dev, ici); | |
b3b5020d | 2036 | struct device *csi2 = pcdev->pdata->csi2_dev; |
0d3244d6 | 2037 | |
eff505fa | 2038 | soc_camera_host_unregister(soc_host); |
055e05a0 | 2039 | pm_runtime_disable(&pdev->dev); |
0d3244d6 MD |
2040 | free_irq(pcdev->irq, pcdev); |
2041 | if (platform_get_resource(pdev, IORESOURCE_MEM, 1)) | |
2042 | dma_release_declared_memory(&pdev->dev); | |
2043 | iounmap(pcdev->base); | |
b3b5020d GL |
2044 | if (csi2 && csi2->driver) |
2045 | module_put(csi2->driver->owner); | |
0d3244d6 | 2046 | kfree(pcdev); |
b3b5020d | 2047 | |
0d3244d6 MD |
2048 | return 0; |
2049 | } | |
2050 | ||
6d1386c6 MD |
2051 | static int sh_mobile_ceu_runtime_nop(struct device *dev) |
2052 | { | |
2053 | /* Runtime PM callback shared between ->runtime_suspend() | |
2054 | * and ->runtime_resume(). Simply returns success. | |
2055 | * | |
2056 | * This driver re-initializes all registers after | |
2057 | * pm_runtime_get_sync() anyway so there is no need | |
2058 | * to save and restore registers here. | |
2059 | */ | |
2060 | return 0; | |
2061 | } | |
2062 | ||
47145210 | 2063 | static const struct dev_pm_ops sh_mobile_ceu_dev_pm_ops = { |
6d1386c6 MD |
2064 | .runtime_suspend = sh_mobile_ceu_runtime_nop, |
2065 | .runtime_resume = sh_mobile_ceu_runtime_nop, | |
2066 | }; | |
2067 | ||
0d3244d6 MD |
2068 | static struct platform_driver sh_mobile_ceu_driver = { |
2069 | .driver = { | |
2070 | .name = "sh_mobile_ceu", | |
6d1386c6 | 2071 | .pm = &sh_mobile_ceu_dev_pm_ops, |
0d3244d6 MD |
2072 | }, |
2073 | .probe = sh_mobile_ceu_probe, | |
50e55fd1 | 2074 | .remove = __devexit_p(sh_mobile_ceu_remove), |
0d3244d6 MD |
2075 | }; |
2076 | ||
2077 | static int __init sh_mobile_ceu_init(void) | |
2078 | { | |
b3b5020d GL |
2079 | /* Whatever return code */ |
2080 | request_module("sh_mobile_csi2"); | |
0d3244d6 MD |
2081 | return platform_driver_register(&sh_mobile_ceu_driver); |
2082 | } | |
2083 | ||
2084 | static void __exit sh_mobile_ceu_exit(void) | |
2085 | { | |
01c1e4ca | 2086 | platform_driver_unregister(&sh_mobile_ceu_driver); |
0d3244d6 MD |
2087 | } |
2088 | ||
2089 | module_init(sh_mobile_ceu_init); | |
2090 | module_exit(sh_mobile_ceu_exit); | |
2091 | ||
2092 | MODULE_DESCRIPTION("SuperH Mobile CEU driver"); | |
2093 | MODULE_AUTHOR("Magnus Damm"); | |
2094 | MODULE_LICENSE("GPL"); | |
40e2e092 | 2095 | MODULE_ALIAS("platform:sh_mobile_ceu"); |