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> | |
30 | #include <linux/device.h> | |
31 | #include <linux/platform_device.h> | |
0d3244d6 | 32 | #include <linux/videodev2.h> |
6d1386c6 | 33 | #include <linux/pm_runtime.h> |
0d3244d6 MD |
34 | |
35 | #include <media/v4l2-common.h> | |
36 | #include <media/v4l2-dev.h> | |
37 | #include <media/soc_camera.h> | |
38 | #include <media/sh_mobile_ceu.h> | |
39 | #include <media/videobuf-dma-contig.h> | |
40 | ||
41 | /* register offsets for sh7722 / sh7723 */ | |
42 | ||
dd54203b MD |
43 | #define CAPSR 0x00 /* Capture start register */ |
44 | #define CAPCR 0x04 /* Capture control register */ | |
45 | #define CAMCR 0x08 /* Capture interface control register */ | |
46 | #define CMCYR 0x0c /* Capture interface cycle register */ | |
47 | #define CAMOR 0x10 /* Capture interface offset register */ | |
48 | #define CAPWR 0x14 /* Capture interface width register */ | |
49 | #define CAIFR 0x18 /* Capture interface input format register */ | |
50 | #define CSTCR 0x20 /* Camera strobe control register (<= sh7722) */ | |
51 | #define CSECR 0x24 /* Camera strobe emission count register (<= sh7722) */ | |
52 | #define CRCNTR 0x28 /* CEU register control register */ | |
53 | #define CRCMPR 0x2c /* CEU register forcible control register */ | |
54 | #define CFLCR 0x30 /* Capture filter control register */ | |
55 | #define CFSZR 0x34 /* Capture filter size clip register */ | |
56 | #define CDWDR 0x38 /* Capture destination width register */ | |
57 | #define CDAYR 0x3c /* Capture data address Y register */ | |
58 | #define CDACR 0x40 /* Capture data address C register */ | |
59 | #define CDBYR 0x44 /* Capture data bottom-field address Y register */ | |
60 | #define CDBCR 0x48 /* Capture data bottom-field address C register */ | |
61 | #define CBDSR 0x4c /* Capture bundle destination size register */ | |
62 | #define CFWCR 0x5c /* Firewall operation control register */ | |
63 | #define CLFCR 0x60 /* Capture low-pass filter control register */ | |
64 | #define CDOCR 0x64 /* Capture data output control register */ | |
65 | #define CDDCR 0x68 /* Capture data complexity level register */ | |
66 | #define CDDAR 0x6c /* Capture data complexity level address register */ | |
67 | #define CEIER 0x70 /* Capture event interrupt enable register */ | |
68 | #define CETCR 0x74 /* Capture event flag clear register */ | |
69 | #define CSTSR 0x7c /* Capture status register */ | |
70 | #define CSRTR 0x80 /* Capture software reset register */ | |
71 | #define CDSSR 0x84 /* Capture data size register */ | |
72 | #define CDAYR2 0x90 /* Capture data address Y register 2 */ | |
73 | #define CDACR2 0x94 /* Capture data address C register 2 */ | |
74 | #define CDBYR2 0x98 /* Capture data bottom-field address Y register 2 */ | |
75 | #define CDBCR2 0x9c /* Capture data bottom-field address C register 2 */ | |
0d3244d6 | 76 | |
6a6c8786 GL |
77 | #undef DEBUG_GEOMETRY |
78 | #ifdef DEBUG_GEOMETRY | |
79 | #define dev_geo dev_info | |
80 | #else | |
81 | #define dev_geo dev_dbg | |
82 | #endif | |
83 | ||
0d3244d6 MD |
84 | /* per video frame buffer */ |
85 | struct sh_mobile_ceu_buffer { | |
86 | struct videobuf_buffer vb; /* v4l buffer must be first */ | |
87 | const struct soc_camera_data_format *fmt; | |
88 | }; | |
89 | ||
90 | struct sh_mobile_ceu_dev { | |
0d3244d6 MD |
91 | struct soc_camera_host ici; |
92 | struct soc_camera_device *icd; | |
93 | ||
94 | unsigned int irq; | |
95 | void __iomem *base; | |
96 | unsigned long video_limit; | |
97 | ||
c60f2b5c | 98 | /* lock used to protect videobuf */ |
0d3244d6 MD |
99 | spinlock_t lock; |
100 | struct list_head capture; | |
101 | struct videobuf_buffer *active; | |
102 | ||
103 | struct sh_mobile_ceu_info *pdata; | |
8be65dc5 | 104 | |
961801bb GL |
105 | u32 cflcr; |
106 | ||
904078f1 GL |
107 | unsigned int is_interlaced:1; |
108 | unsigned int image_mode:1; | |
109 | unsigned int is_16bit:1; | |
110 | }; | |
111 | ||
112 | struct sh_mobile_ceu_cam { | |
6a6c8786 GL |
113 | struct v4l2_rect ceu_rect; |
114 | unsigned int cam_width; | |
115 | unsigned int cam_height; | |
904078f1 | 116 | const struct soc_camera_data_format *extra_fmt; |
8be65dc5 | 117 | const struct soc_camera_data_format *camera_fmt; |
0d3244d6 MD |
118 | }; |
119 | ||
c354b400 KM |
120 | static unsigned long make_bus_param(struct sh_mobile_ceu_dev *pcdev) |
121 | { | |
122 | unsigned long flags; | |
123 | ||
124 | flags = SOCAM_MASTER | | |
125 | SOCAM_PCLK_SAMPLE_RISING | | |
126 | SOCAM_HSYNC_ACTIVE_HIGH | | |
127 | SOCAM_HSYNC_ACTIVE_LOW | | |
128 | SOCAM_VSYNC_ACTIVE_HIGH | | |
129 | SOCAM_VSYNC_ACTIVE_LOW | | |
130 | SOCAM_DATA_ACTIVE_HIGH; | |
131 | ||
132 | if (pcdev->pdata->flags & SH_CEU_FLAG_USE_8BIT_BUS) | |
133 | flags |= SOCAM_DATAWIDTH_8; | |
134 | ||
135 | if (pcdev->pdata->flags & SH_CEU_FLAG_USE_16BIT_BUS) | |
136 | flags |= SOCAM_DATAWIDTH_16; | |
137 | ||
138 | if (flags & SOCAM_DATAWIDTH_MASK) | |
139 | return flags; | |
140 | ||
141 | return 0; | |
142 | } | |
143 | ||
0d3244d6 | 144 | static void ceu_write(struct sh_mobile_ceu_dev *priv, |
7a1a8164 | 145 | unsigned long reg_offs, u32 data) |
0d3244d6 MD |
146 | { |
147 | iowrite32(data, priv->base + reg_offs); | |
148 | } | |
149 | ||
7a1a8164 | 150 | static u32 ceu_read(struct sh_mobile_ceu_dev *priv, unsigned long reg_offs) |
0d3244d6 MD |
151 | { |
152 | return ioread32(priv->base + reg_offs); | |
153 | } | |
154 | ||
155 | /* | |
156 | * Videobuf operations | |
157 | */ | |
158 | static int sh_mobile_ceu_videobuf_setup(struct videobuf_queue *vq, | |
159 | unsigned int *count, | |
160 | unsigned int *size) | |
161 | { | |
162 | struct soc_camera_device *icd = vq->priv_data; | |
163 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); | |
164 | struct sh_mobile_ceu_dev *pcdev = ici->priv; | |
165 | int bytes_per_pixel = (icd->current_fmt->depth + 7) >> 3; | |
166 | ||
6a6c8786 | 167 | *size = PAGE_ALIGN(icd->user_width * icd->user_height * |
a0705b07 | 168 | bytes_per_pixel); |
0d3244d6 MD |
169 | |
170 | if (0 == *count) | |
171 | *count = 2; | |
172 | ||
173 | if (pcdev->video_limit) { | |
174 | while (*size * *count > pcdev->video_limit) | |
175 | (*count)--; | |
176 | } | |
177 | ||
0166b743 | 178 | dev_dbg(icd->dev.parent, "count=%d, size=%d\n", *count, *size); |
0d3244d6 MD |
179 | |
180 | return 0; | |
181 | } | |
182 | ||
183 | static void free_buffer(struct videobuf_queue *vq, | |
184 | struct sh_mobile_ceu_buffer *buf) | |
185 | { | |
186 | struct soc_camera_device *icd = vq->priv_data; | |
6a6c8786 | 187 | struct device *dev = icd->dev.parent; |
0d3244d6 | 188 | |
6a6c8786 | 189 | dev_dbg(dev, "%s (vb=0x%p) 0x%08lx %zd\n", __func__, |
0d3244d6 MD |
190 | &buf->vb, buf->vb.baddr, buf->vb.bsize); |
191 | ||
192 | if (in_interrupt()) | |
193 | BUG(); | |
194 | ||
97215cbd | 195 | videobuf_waiton(&buf->vb, 0, 0); |
0d3244d6 | 196 | videobuf_dma_contig_free(vq, &buf->vb); |
6a6c8786 | 197 | dev_dbg(dev, "%s freed\n", __func__); |
0d3244d6 MD |
198 | buf->vb.state = VIDEOBUF_NEEDS_INIT; |
199 | } | |
200 | ||
7a1a8164 MD |
201 | #define CEU_CETCR_MAGIC 0x0317f313 /* acknowledge magical interrupt sources */ |
202 | #define CEU_CETCR_IGRW (1 << 4) /* prohibited register access interrupt bit */ | |
203 | #define CEU_CEIER_CPEIE (1 << 0) /* one-frame capture end interrupt */ | |
204 | #define CEU_CAPCR_CTNCP (1 << 16) /* continuous capture mode (if set) */ | |
205 | ||
206 | ||
0d3244d6 MD |
207 | static void sh_mobile_ceu_capture(struct sh_mobile_ceu_dev *pcdev) |
208 | { | |
8be65dc5 | 209 | struct soc_camera_device *icd = pcdev->icd; |
ccab8a29 | 210 | dma_addr_t phys_addr_top, phys_addr_bottom; |
7a1a8164 MD |
211 | |
212 | /* The hardware is _very_ picky about this sequence. Especially | |
213 | * the CEU_CETCR_MAGIC value. It seems like we need to acknowledge | |
214 | * several not-so-well documented interrupt sources in CETCR. | |
215 | */ | |
216 | ceu_write(pcdev, CEIER, ceu_read(pcdev, CEIER) & ~CEU_CEIER_CPEIE); | |
217 | ceu_write(pcdev, CETCR, ~ceu_read(pcdev, CETCR) & CEU_CETCR_MAGIC); | |
218 | ceu_write(pcdev, CEIER, ceu_read(pcdev, CEIER) | CEU_CEIER_CPEIE); | |
219 | ceu_write(pcdev, CAPCR, ceu_read(pcdev, CAPCR) & ~CEU_CAPCR_CTNCP); | |
220 | ceu_write(pcdev, CETCR, CEU_CETCR_MAGIC ^ CEU_CETCR_IGRW); | |
0d3244d6 | 221 | |
8be65dc5 MD |
222 | if (!pcdev->active) |
223 | return; | |
224 | ||
ccab8a29 KM |
225 | phys_addr_top = videobuf_to_dma_contig(pcdev->active); |
226 | ceu_write(pcdev, CDAYR, phys_addr_top); | |
e802967c | 227 | if (pcdev->is_interlaced) { |
6a6c8786 | 228 | phys_addr_bottom = phys_addr_top + icd->user_width; |
ccab8a29 KM |
229 | ceu_write(pcdev, CDBYR, phys_addr_bottom); |
230 | } | |
8be65dc5 MD |
231 | |
232 | switch (icd->current_fmt->fourcc) { | |
233 | case V4L2_PIX_FMT_NV12: | |
234 | case V4L2_PIX_FMT_NV21: | |
9e4a56d2 MD |
235 | case V4L2_PIX_FMT_NV16: |
236 | case V4L2_PIX_FMT_NV61: | |
6a6c8786 GL |
237 | phys_addr_top += icd->user_width * |
238 | icd->user_height; | |
ccab8a29 | 239 | ceu_write(pcdev, CDACR, phys_addr_top); |
e802967c | 240 | if (pcdev->is_interlaced) { |
a0705b07 | 241 | phys_addr_bottom = phys_addr_top + |
6a6c8786 | 242 | icd->user_width; |
ccab8a29 KM |
243 | ceu_write(pcdev, CDBCR, phys_addr_bottom); |
244 | } | |
0d3244d6 | 245 | } |
8be65dc5 MD |
246 | |
247 | pcdev->active->state = VIDEOBUF_ACTIVE; | |
248 | ceu_write(pcdev, CAPSR, 0x1); /* start capture */ | |
0d3244d6 MD |
249 | } |
250 | ||
251 | static int sh_mobile_ceu_videobuf_prepare(struct videobuf_queue *vq, | |
252 | struct videobuf_buffer *vb, | |
253 | enum v4l2_field field) | |
254 | { | |
255 | struct soc_camera_device *icd = vq->priv_data; | |
256 | struct sh_mobile_ceu_buffer *buf; | |
257 | int ret; | |
258 | ||
259 | buf = container_of(vb, struct sh_mobile_ceu_buffer, vb); | |
260 | ||
0166b743 | 261 | dev_dbg(icd->dev.parent, "%s (vb=0x%p) 0x%08lx %zd\n", __func__, |
0d3244d6 MD |
262 | vb, vb->baddr, vb->bsize); |
263 | ||
264 | /* Added list head initialization on alloc */ | |
265 | WARN_ON(!list_empty(&vb->queue)); | |
266 | ||
267 | #ifdef DEBUG | |
268 | /* This can be useful if you want to see if we actually fill | |
269 | * the buffer with something */ | |
270 | memset((void *)vb->baddr, 0xaa, vb->bsize); | |
271 | #endif | |
272 | ||
273 | BUG_ON(NULL == icd->current_fmt); | |
274 | ||
275 | if (buf->fmt != icd->current_fmt || | |
6a6c8786 GL |
276 | vb->width != icd->user_width || |
277 | vb->height != icd->user_height || | |
0d3244d6 MD |
278 | vb->field != field) { |
279 | buf->fmt = icd->current_fmt; | |
6a6c8786 GL |
280 | vb->width = icd->user_width; |
281 | vb->height = icd->user_height; | |
0d3244d6 MD |
282 | vb->field = field; |
283 | vb->state = VIDEOBUF_NEEDS_INIT; | |
284 | } | |
285 | ||
286 | vb->size = vb->width * vb->height * ((buf->fmt->depth + 7) >> 3); | |
287 | if (0 != vb->baddr && vb->bsize < vb->size) { | |
288 | ret = -EINVAL; | |
289 | goto out; | |
290 | } | |
291 | ||
292 | if (vb->state == VIDEOBUF_NEEDS_INIT) { | |
293 | ret = videobuf_iolock(vq, vb, NULL); | |
294 | if (ret) | |
295 | goto fail; | |
296 | vb->state = VIDEOBUF_PREPARED; | |
297 | } | |
298 | ||
299 | return 0; | |
300 | fail: | |
301 | free_buffer(vq, buf); | |
302 | out: | |
303 | return ret; | |
304 | } | |
305 | ||
2dd54a54 | 306 | /* Called under spinlock_irqsave(&pcdev->lock, ...) */ |
0d3244d6 MD |
307 | static void sh_mobile_ceu_videobuf_queue(struct videobuf_queue *vq, |
308 | struct videobuf_buffer *vb) | |
309 | { | |
310 | struct soc_camera_device *icd = vq->priv_data; | |
311 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); | |
312 | struct sh_mobile_ceu_dev *pcdev = ici->priv; | |
0d3244d6 | 313 | |
0166b743 | 314 | dev_dbg(icd->dev.parent, "%s (vb=0x%p) 0x%08lx %zd\n", __func__, |
0d3244d6 MD |
315 | vb, vb->baddr, vb->bsize); |
316 | ||
51354cc3 | 317 | vb->state = VIDEOBUF_QUEUED; |
0d3244d6 MD |
318 | list_add_tail(&vb->queue, &pcdev->capture); |
319 | ||
320 | if (!pcdev->active) { | |
321 | pcdev->active = vb; | |
322 | sh_mobile_ceu_capture(pcdev); | |
323 | } | |
0d3244d6 MD |
324 | } |
325 | ||
326 | static void sh_mobile_ceu_videobuf_release(struct videobuf_queue *vq, | |
327 | struct videobuf_buffer *vb) | |
328 | { | |
cca0e549 GL |
329 | struct soc_camera_device *icd = vq->priv_data; |
330 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); | |
331 | struct sh_mobile_ceu_dev *pcdev = ici->priv; | |
332 | unsigned long flags; | |
333 | ||
334 | spin_lock_irqsave(&pcdev->lock, flags); | |
335 | ||
336 | if (pcdev->active == vb) { | |
337 | /* disable capture (release DMA buffer), reset */ | |
338 | ceu_write(pcdev, CAPSR, 1 << 16); | |
339 | pcdev->active = NULL; | |
340 | } | |
341 | ||
342 | if ((vb->state == VIDEOBUF_ACTIVE || vb->state == VIDEOBUF_QUEUED) && | |
343 | !list_empty(&vb->queue)) { | |
344 | vb->state = VIDEOBUF_ERROR; | |
345 | list_del_init(&vb->queue); | |
346 | } | |
347 | ||
348 | spin_unlock_irqrestore(&pcdev->lock, flags); | |
349 | ||
0d3244d6 MD |
350 | free_buffer(vq, container_of(vb, struct sh_mobile_ceu_buffer, vb)); |
351 | } | |
352 | ||
353 | static struct videobuf_queue_ops sh_mobile_ceu_videobuf_ops = { | |
354 | .buf_setup = sh_mobile_ceu_videobuf_setup, | |
355 | .buf_prepare = sh_mobile_ceu_videobuf_prepare, | |
356 | .buf_queue = sh_mobile_ceu_videobuf_queue, | |
357 | .buf_release = sh_mobile_ceu_videobuf_release, | |
358 | }; | |
359 | ||
360 | static irqreturn_t sh_mobile_ceu_irq(int irq, void *data) | |
361 | { | |
362 | struct sh_mobile_ceu_dev *pcdev = data; | |
363 | struct videobuf_buffer *vb; | |
364 | unsigned long flags; | |
365 | ||
366 | spin_lock_irqsave(&pcdev->lock, flags); | |
367 | ||
368 | vb = pcdev->active; | |
cca0e549 GL |
369 | if (!vb) |
370 | /* Stale interrupt from a released buffer */ | |
371 | goto out; | |
372 | ||
0d3244d6 MD |
373 | list_del_init(&vb->queue); |
374 | ||
375 | if (!list_empty(&pcdev->capture)) | |
376 | pcdev->active = list_entry(pcdev->capture.next, | |
377 | struct videobuf_buffer, queue); | |
378 | else | |
379 | pcdev->active = NULL; | |
380 | ||
381 | sh_mobile_ceu_capture(pcdev); | |
382 | ||
383 | vb->state = VIDEOBUF_DONE; | |
384 | do_gettimeofday(&vb->ts); | |
385 | vb->field_count++; | |
386 | wake_up(&vb->done); | |
cca0e549 GL |
387 | |
388 | out: | |
0d3244d6 MD |
389 | spin_unlock_irqrestore(&pcdev->lock, flags); |
390 | ||
391 | return IRQ_HANDLED; | |
392 | } | |
393 | ||
1c3bb743 | 394 | /* Called with .video_lock held */ |
0d3244d6 MD |
395 | static int sh_mobile_ceu_add_device(struct soc_camera_device *icd) |
396 | { | |
397 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); | |
398 | struct sh_mobile_ceu_dev *pcdev = ici->priv; | |
0d3244d6 | 399 | |
0d3244d6 | 400 | if (pcdev->icd) |
979ea1dd | 401 | return -EBUSY; |
0d3244d6 | 402 | |
0166b743 | 403 | dev_info(icd->dev.parent, |
0d3244d6 MD |
404 | "SuperH Mobile CEU driver attached to camera %d\n", |
405 | icd->devnum); | |
406 | ||
40e2e092 GL |
407 | clk_enable(pcdev->clk); |
408 | ||
0d3244d6 MD |
409 | ceu_write(pcdev, CAPSR, 1 << 16); /* reset */ |
410 | while (ceu_read(pcdev, CSTSR) & 1) | |
411 | msleep(1); | |
412 | ||
413 | pcdev->icd = icd; | |
979ea1dd GL |
414 | |
415 | return 0; | |
0d3244d6 MD |
416 | } |
417 | ||
1c3bb743 | 418 | /* Called with .video_lock held */ |
0d3244d6 MD |
419 | static void sh_mobile_ceu_remove_device(struct soc_camera_device *icd) |
420 | { | |
421 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); | |
422 | struct sh_mobile_ceu_dev *pcdev = ici->priv; | |
51354cc3 | 423 | unsigned long flags; |
0d3244d6 MD |
424 | |
425 | BUG_ON(icd != pcdev->icd); | |
426 | ||
427 | /* disable capture, disable interrupts */ | |
428 | ceu_write(pcdev, CEIER, 0); | |
429 | ceu_write(pcdev, CAPSR, 1 << 16); /* reset */ | |
51354cc3 MD |
430 | |
431 | /* make sure active buffer is canceled */ | |
432 | spin_lock_irqsave(&pcdev->lock, flags); | |
433 | if (pcdev->active) { | |
434 | list_del(&pcdev->active->queue); | |
435 | pcdev->active->state = VIDEOBUF_ERROR; | |
436 | wake_up_all(&pcdev->active->done); | |
437 | pcdev->active = NULL; | |
438 | } | |
439 | spin_unlock_irqrestore(&pcdev->lock, flags); | |
440 | ||
40e2e092 GL |
441 | clk_disable(pcdev->clk); |
442 | ||
0166b743 | 443 | dev_info(icd->dev.parent, |
0d3244d6 MD |
444 | "SuperH Mobile CEU driver detached from camera %d\n", |
445 | icd->devnum); | |
446 | ||
447 | pcdev->icd = NULL; | |
448 | } | |
449 | ||
961801bb GL |
450 | /* |
451 | * See chapter 29.4.12 "Capture Filter Control Register (CFLCR)" | |
452 | * in SH7722 Hardware Manual | |
453 | */ | |
454 | static unsigned int size_dst(unsigned int src, unsigned int scale) | |
455 | { | |
456 | unsigned int mant_pre = scale >> 12; | |
457 | if (!src || !scale) | |
458 | return src; | |
459 | return ((mant_pre + 2 * (src - 1)) / (2 * mant_pre) - 1) * | |
460 | mant_pre * 4096 / scale + 1; | |
461 | } | |
462 | ||
961801bb GL |
463 | static u16 calc_scale(unsigned int src, unsigned int *dst) |
464 | { | |
465 | u16 scale; | |
466 | ||
467 | if (src == *dst) | |
468 | return 0; | |
469 | ||
470 | scale = (src * 4096 / *dst) & ~7; | |
471 | ||
472 | while (scale > 4096 && size_dst(src, scale) < *dst) | |
473 | scale -= 8; | |
474 | ||
475 | *dst = size_dst(src, scale); | |
476 | ||
477 | return scale; | |
478 | } | |
479 | ||
480 | /* rect is guaranteed to not exceed the scaled camera rectangle */ | |
904078f1 | 481 | static void sh_mobile_ceu_set_rect(struct soc_camera_device *icd, |
6a6c8786 GL |
482 | unsigned int out_width, |
483 | unsigned int out_height) | |
904078f1 GL |
484 | { |
485 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); | |
486 | struct sh_mobile_ceu_cam *cam = icd->host_priv; | |
6a6c8786 | 487 | struct v4l2_rect *rect = &cam->ceu_rect; |
904078f1 | 488 | struct sh_mobile_ceu_dev *pcdev = ici->priv; |
6a6c8786 GL |
489 | unsigned int height, width, cdwdr_width, in_width, in_height; |
490 | unsigned int left_offset, top_offset; | |
904078f1 GL |
491 | u32 camor; |
492 | ||
6a6c8786 GL |
493 | dev_dbg(icd->dev.parent, "Crop %ux%u@%u:%u\n", |
494 | rect->width, rect->height, rect->left, rect->top); | |
904078f1 | 495 | |
6a6c8786 GL |
496 | left_offset = rect->left; |
497 | top_offset = rect->top; | |
904078f1 GL |
498 | |
499 | if (pcdev->image_mode) { | |
6a6c8786 | 500 | in_width = rect->width; |
961801bb | 501 | if (!pcdev->is_16bit) { |
961801bb GL |
502 | in_width *= 2; |
503 | left_offset *= 2; | |
504 | } | |
6a6c8786 | 505 | width = cdwdr_width = out_width; |
904078f1 | 506 | } else { |
961801bb | 507 | unsigned int w_factor = (icd->current_fmt->depth + 7) >> 3; |
6a6c8786 GL |
508 | |
509 | width = out_width * w_factor / 2; | |
510 | ||
961801bb GL |
511 | if (!pcdev->is_16bit) |
512 | w_factor *= 2; | |
513 | ||
6a6c8786 | 514 | in_width = rect->width * w_factor / 2; |
961801bb GL |
515 | left_offset = left_offset * w_factor / 2; |
516 | ||
6a6c8786 | 517 | cdwdr_width = width * 2; |
904078f1 GL |
518 | } |
519 | ||
6a6c8786 GL |
520 | height = out_height; |
521 | in_height = rect->height; | |
904078f1 GL |
522 | if (pcdev->is_interlaced) { |
523 | height /= 2; | |
961801bb GL |
524 | in_height /= 2; |
525 | top_offset /= 2; | |
904078f1 GL |
526 | cdwdr_width *= 2; |
527 | } | |
528 | ||
6a6c8786 | 529 | /* Set CAMOR, CAPWR, CFSZR, take care of CDWDR */ |
904078f1 | 530 | camor = left_offset | (top_offset << 16); |
6a6c8786 GL |
531 | |
532 | dev_geo(icd->dev.parent, | |
533 | "CAMOR 0x%x, CAPWR 0x%x, CFSZR 0x%x, CDWDR 0x%x\n", camor, | |
534 | (in_height << 16) | in_width, (height << 16) | width, | |
535 | cdwdr_width); | |
536 | ||
904078f1 | 537 | ceu_write(pcdev, CAMOR, camor); |
961801bb | 538 | ceu_write(pcdev, CAPWR, (in_height << 16) | in_width); |
6a6c8786 | 539 | ceu_write(pcdev, CFSZR, (height << 16) | width); |
904078f1 GL |
540 | ceu_write(pcdev, CDWDR, cdwdr_width); |
541 | } | |
542 | ||
543 | static u32 capture_save_reset(struct sh_mobile_ceu_dev *pcdev) | |
544 | { | |
545 | u32 capsr = ceu_read(pcdev, CAPSR); | |
546 | ceu_write(pcdev, CAPSR, 1 << 16); /* reset, stop capture */ | |
547 | return capsr; | |
548 | } | |
549 | ||
550 | static void capture_restore(struct sh_mobile_ceu_dev *pcdev, u32 capsr) | |
551 | { | |
552 | unsigned long timeout = jiffies + 10 * HZ; | |
553 | ||
554 | /* | |
555 | * Wait until the end of the current frame. It can take a long time, | |
556 | * but if it has been aborted by a CAPSR reset, it shoule exit sooner. | |
557 | */ | |
558 | while ((ceu_read(pcdev, CSTSR) & 1) && time_before(jiffies, timeout)) | |
559 | msleep(1); | |
560 | ||
561 | if (time_after(jiffies, timeout)) { | |
562 | dev_err(pcdev->ici.v4l2_dev.dev, | |
563 | "Timeout waiting for frame end! Interface problem?\n"); | |
564 | return; | |
565 | } | |
566 | ||
567 | /* Wait until reset clears, this shall not hang... */ | |
568 | while (ceu_read(pcdev, CAPSR) & (1 << 16)) | |
569 | udelay(10); | |
570 | ||
571 | /* Anything to restore? */ | |
572 | if (capsr & ~(1 << 16)) | |
573 | ceu_write(pcdev, CAPSR, capsr); | |
574 | } | |
575 | ||
0d3244d6 MD |
576 | static int sh_mobile_ceu_set_bus_param(struct soc_camera_device *icd, |
577 | __u32 pixfmt) | |
578 | { | |
579 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); | |
580 | struct sh_mobile_ceu_dev *pcdev = ici->priv; | |
904078f1 | 581 | int ret; |
0d3244d6 | 582 | unsigned long camera_flags, common_flags, value; |
904078f1 GL |
583 | int yuv_lineskip; |
584 | struct sh_mobile_ceu_cam *cam = icd->host_priv; | |
585 | u32 capsr = capture_save_reset(pcdev); | |
0d3244d6 MD |
586 | |
587 | camera_flags = icd->ops->query_bus_param(icd); | |
588 | common_flags = soc_camera_bus_param_compatible(camera_flags, | |
c354b400 | 589 | make_bus_param(pcdev)); |
0d3244d6 MD |
590 | if (!common_flags) |
591 | return -EINVAL; | |
592 | ||
593 | ret = icd->ops->set_bus_param(icd, common_flags); | |
594 | if (ret < 0) | |
595 | return ret; | |
596 | ||
597 | switch (common_flags & SOCAM_DATAWIDTH_MASK) { | |
598 | case SOCAM_DATAWIDTH_8: | |
904078f1 | 599 | pcdev->is_16bit = 0; |
0d3244d6 MD |
600 | break; |
601 | case SOCAM_DATAWIDTH_16: | |
904078f1 | 602 | pcdev->is_16bit = 1; |
0d3244d6 MD |
603 | break; |
604 | default: | |
605 | return -EINVAL; | |
606 | } | |
607 | ||
608 | ceu_write(pcdev, CRCNTR, 0); | |
609 | ceu_write(pcdev, CRCMPR, 0); | |
610 | ||
8be65dc5 | 611 | value = 0x00000010; /* data fetch by default */ |
961801bb | 612 | yuv_lineskip = 0; |
8be65dc5 MD |
613 | |
614 | switch (icd->current_fmt->fourcc) { | |
615 | case V4L2_PIX_FMT_NV12: | |
616 | case V4L2_PIX_FMT_NV21: | |
617 | yuv_lineskip = 1; /* skip for NV12/21, no skip for NV16/61 */ | |
9e4a56d2 MD |
618 | /* fall-through */ |
619 | case V4L2_PIX_FMT_NV16: | |
620 | case V4L2_PIX_FMT_NV61: | |
904078f1 | 621 | switch (cam->camera_fmt->fourcc) { |
8be65dc5 MD |
622 | case V4L2_PIX_FMT_UYVY: |
623 | value = 0x00000000; /* Cb0, Y0, Cr0, Y1 */ | |
624 | break; | |
625 | case V4L2_PIX_FMT_VYUY: | |
626 | value = 0x00000100; /* Cr0, Y0, Cb0, Y1 */ | |
627 | break; | |
628 | case V4L2_PIX_FMT_YUYV: | |
629 | value = 0x00000200; /* Y0, Cb0, Y1, Cr0 */ | |
630 | break; | |
631 | case V4L2_PIX_FMT_YVYU: | |
632 | value = 0x00000300; /* Y0, Cr0, Y1, Cb0 */ | |
633 | break; | |
634 | default: | |
635 | BUG(); | |
636 | } | |
637 | } | |
638 | ||
7a1a8164 MD |
639 | if (icd->current_fmt->fourcc == V4L2_PIX_FMT_NV21 || |
640 | icd->current_fmt->fourcc == V4L2_PIX_FMT_NV61) | |
9e4a56d2 | 641 | value ^= 0x00000100; /* swap U, V to change from NV1x->NVx1 */ |
8be65dc5 | 642 | |
7a1a8164 MD |
643 | value |= common_flags & SOCAM_VSYNC_ACTIVE_LOW ? 1 << 1 : 0; |
644 | value |= common_flags & SOCAM_HSYNC_ACTIVE_LOW ? 1 << 0 : 0; | |
904078f1 | 645 | value |= pcdev->is_16bit ? 1 << 12 : 0; |
0d3244d6 MD |
646 | ceu_write(pcdev, CAMCR, value); |
647 | ||
648 | ceu_write(pcdev, CAPCR, 0x00300000); | |
e802967c | 649 | ceu_write(pcdev, CAIFR, pcdev->is_interlaced ? 0x101 : 0); |
0d3244d6 | 650 | |
6a6c8786 | 651 | sh_mobile_ceu_set_rect(icd, icd->user_width, icd->user_height); |
0d3244d6 MD |
652 | mdelay(1); |
653 | ||
961801bb | 654 | ceu_write(pcdev, CFLCR, pcdev->cflcr); |
dd54203b MD |
655 | |
656 | /* A few words about byte order (observed in Big Endian mode) | |
657 | * | |
658 | * In data fetch mode bytes are received in chunks of 8 bytes. | |
659 | * D0, D1, D2, D3, D4, D5, D6, D7 (D0 received first) | |
660 | * | |
661 | * The data is however by default written to memory in reverse order: | |
662 | * D7, D6, D5, D4, D3, D2, D1, D0 (D7 written to lowest byte) | |
663 | * | |
664 | * The lowest three bits of CDOCR allows us to do swapping, | |
2c0a072e MD |
665 | * using 7 we swap the data bytes to match the incoming order: |
666 | * D0, D1, D2, D3, D4, D5, D6, D7 | |
dd54203b | 667 | */ |
8be65dc5 MD |
668 | value = 0x00000017; |
669 | if (yuv_lineskip) | |
670 | value &= ~0x00000010; /* convert 4:2:2 -> 4:2:0 */ | |
671 | ||
672 | ceu_write(pcdev, CDOCR, value); | |
0d3244d6 MD |
673 | ceu_write(pcdev, CFWCR, 0); /* keep "datafetch firewall" disabled */ |
674 | ||
6a6c8786 | 675 | dev_dbg(icd->dev.parent, "S_FMT successful for %c%c%c%c %ux%u\n", |
904078f1 GL |
676 | pixfmt & 0xff, (pixfmt >> 8) & 0xff, |
677 | (pixfmt >> 16) & 0xff, (pixfmt >> 24) & 0xff, | |
6a6c8786 | 678 | icd->user_width, icd->user_height); |
904078f1 GL |
679 | |
680 | capture_restore(pcdev, capsr); | |
681 | ||
0d3244d6 | 682 | /* not in bundle mode: skip CBDSR, CDAYR2, CDACR2, CDBYR2, CDBCR2 */ |
0d3244d6 MD |
683 | return 0; |
684 | } | |
685 | ||
9414de39 | 686 | static int sh_mobile_ceu_try_bus_param(struct soc_camera_device *icd) |
0d3244d6 MD |
687 | { |
688 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); | |
689 | struct sh_mobile_ceu_dev *pcdev = ici->priv; | |
690 | unsigned long camera_flags, common_flags; | |
691 | ||
692 | camera_flags = icd->ops->query_bus_param(icd); | |
693 | common_flags = soc_camera_bus_param_compatible(camera_flags, | |
c354b400 | 694 | make_bus_param(pcdev)); |
0d3244d6 MD |
695 | if (!common_flags) |
696 | return -EINVAL; | |
697 | ||
698 | return 0; | |
699 | } | |
700 | ||
8be65dc5 MD |
701 | static const struct soc_camera_data_format sh_mobile_ceu_formats[] = { |
702 | { | |
703 | .name = "NV12", | |
704 | .depth = 12, | |
705 | .fourcc = V4L2_PIX_FMT_NV12, | |
706 | .colorspace = V4L2_COLORSPACE_JPEG, | |
707 | }, | |
708 | { | |
709 | .name = "NV21", | |
710 | .depth = 12, | |
711 | .fourcc = V4L2_PIX_FMT_NV21, | |
712 | .colorspace = V4L2_COLORSPACE_JPEG, | |
713 | }, | |
9e4a56d2 MD |
714 | { |
715 | .name = "NV16", | |
716 | .depth = 16, | |
717 | .fourcc = V4L2_PIX_FMT_NV16, | |
718 | .colorspace = V4L2_COLORSPACE_JPEG, | |
719 | }, | |
720 | { | |
721 | .name = "NV61", | |
722 | .depth = 16, | |
723 | .fourcc = V4L2_PIX_FMT_NV61, | |
724 | .colorspace = V4L2_COLORSPACE_JPEG, | |
725 | }, | |
8be65dc5 MD |
726 | }; |
727 | ||
9414de39 MD |
728 | static int sh_mobile_ceu_get_formats(struct soc_camera_device *icd, int idx, |
729 | struct soc_camera_format_xlate *xlate) | |
730 | { | |
6a6c8786 | 731 | struct device *dev = icd->dev.parent; |
8be65dc5 | 732 | int ret, k, n; |
9414de39 | 733 | int formats = 0; |
904078f1 | 734 | struct sh_mobile_ceu_cam *cam; |
9414de39 MD |
735 | |
736 | ret = sh_mobile_ceu_try_bus_param(icd); | |
737 | if (ret < 0) | |
738 | return 0; | |
739 | ||
904078f1 GL |
740 | if (!icd->host_priv) { |
741 | cam = kzalloc(sizeof(*cam), GFP_KERNEL); | |
742 | if (!cam) | |
743 | return -ENOMEM; | |
744 | ||
745 | icd->host_priv = cam; | |
746 | } else { | |
747 | cam = icd->host_priv; | |
748 | } | |
749 | ||
c8329acc GL |
750 | /* Beginning of a pass */ |
751 | if (!idx) | |
904078f1 | 752 | cam->extra_fmt = NULL; |
c8329acc | 753 | |
9414de39 | 754 | switch (icd->formats[idx].fourcc) { |
8be65dc5 MD |
755 | case V4L2_PIX_FMT_UYVY: |
756 | case V4L2_PIX_FMT_VYUY: | |
757 | case V4L2_PIX_FMT_YUYV: | |
758 | case V4L2_PIX_FMT_YVYU: | |
904078f1 | 759 | if (cam->extra_fmt) |
c8329acc GL |
760 | goto add_single_format; |
761 | ||
762 | /* | |
763 | * Our case is simple so far: for any of the above four camera | |
764 | * formats we add all our four synthesized NV* formats, so, | |
765 | * just marking the device with a single flag suffices. If | |
766 | * the format generation rules are more complex, you would have | |
767 | * to actually hang your already added / counted formats onto | |
768 | * the host_priv pointer and check whether the format you're | |
769 | * going to add now is already there. | |
770 | */ | |
904078f1 | 771 | cam->extra_fmt = (void *)sh_mobile_ceu_formats; |
c8329acc | 772 | |
8be65dc5 MD |
773 | n = ARRAY_SIZE(sh_mobile_ceu_formats); |
774 | formats += n; | |
775 | for (k = 0; xlate && k < n; k++) { | |
776 | xlate->host_fmt = &sh_mobile_ceu_formats[k]; | |
777 | xlate->cam_fmt = icd->formats + idx; | |
778 | xlate->buswidth = icd->formats[idx].depth; | |
779 | xlate++; | |
6a6c8786 | 780 | dev_dbg(dev, "Providing format %s using %s\n", |
8be65dc5 MD |
781 | sh_mobile_ceu_formats[k].name, |
782 | icd->formats[idx].name); | |
783 | } | |
9414de39 | 784 | default: |
c8329acc | 785 | add_single_format: |
9414de39 MD |
786 | /* Generic pass-through */ |
787 | formats++; | |
788 | if (xlate) { | |
789 | xlate->host_fmt = icd->formats + idx; | |
790 | xlate->cam_fmt = icd->formats + idx; | |
791 | xlate->buswidth = icd->formats[idx].depth; | |
792 | xlate++; | |
6a6c8786 | 793 | dev_dbg(dev, |
9414de39 MD |
794 | "Providing format %s in pass-through mode\n", |
795 | icd->formats[idx].name); | |
796 | } | |
797 | } | |
798 | ||
799 | return formats; | |
800 | } | |
801 | ||
904078f1 GL |
802 | static void sh_mobile_ceu_put_formats(struct soc_camera_device *icd) |
803 | { | |
804 | kfree(icd->host_priv); | |
805 | icd->host_priv = NULL; | |
806 | } | |
807 | ||
961801bb | 808 | /* Check if any dimension of r1 is smaller than respective one of r2 */ |
904078f1 GL |
809 | static bool is_smaller(struct v4l2_rect *r1, struct v4l2_rect *r2) |
810 | { | |
811 | return r1->width < r2->width || r1->height < r2->height; | |
812 | } | |
813 | ||
961801bb GL |
814 | /* Check if r1 fails to cover r2 */ |
815 | static bool is_inside(struct v4l2_rect *r1, struct v4l2_rect *r2) | |
816 | { | |
817 | return r1->left > r2->left || r1->top > r2->top || | |
818 | r1->left + r1->width < r2->left + r2->width || | |
819 | r1->top + r1->height < r2->top + r2->height; | |
820 | } | |
821 | ||
6a6c8786 GL |
822 | static unsigned int scale_down(unsigned int size, unsigned int scale) |
823 | { | |
824 | return (size * 4096 + scale / 2) / scale; | |
825 | } | |
826 | ||
827 | static unsigned int scale_up(unsigned int size, unsigned int scale) | |
828 | { | |
829 | return (size * scale + 2048) / 4096; | |
830 | } | |
831 | ||
832 | static unsigned int calc_generic_scale(unsigned int input, unsigned int output) | |
833 | { | |
834 | return (input * 4096 + output / 2) / output; | |
835 | } | |
836 | ||
837 | static int client_g_rect(struct v4l2_subdev *sd, struct v4l2_rect *rect) | |
838 | { | |
839 | struct v4l2_crop crop; | |
840 | struct v4l2_cropcap cap; | |
841 | int ret; | |
842 | ||
843 | crop.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; | |
844 | ||
845 | ret = v4l2_subdev_call(sd, video, g_crop, &crop); | |
846 | if (!ret) { | |
847 | *rect = crop.c; | |
848 | return ret; | |
849 | } | |
850 | ||
851 | /* Camera driver doesn't support .g_crop(), assume default rectangle */ | |
852 | cap.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; | |
853 | ||
854 | ret = v4l2_subdev_call(sd, video, cropcap, &cap); | |
855 | if (ret < 0) | |
856 | return ret; | |
857 | ||
858 | *rect = cap.defrect; | |
859 | ||
860 | return ret; | |
861 | } | |
862 | ||
961801bb | 863 | /* |
6a6c8786 | 864 | * The common for both scaling and cropping iterative approach is: |
961801bb GL |
865 | * 1. try if the client can produce exactly what requested by the user |
866 | * 2. if (1) failed, try to double the client image until we get one big enough | |
867 | * 3. if (2) failed, try to request the maximum image | |
868 | */ | |
6a6c8786 GL |
869 | static int client_s_crop(struct v4l2_subdev *sd, struct v4l2_crop *crop, |
870 | struct v4l2_crop *cam_crop) | |
09e231b3 | 871 | { |
6a6c8786 GL |
872 | struct v4l2_rect *rect = &crop->c, *cam_rect = &cam_crop->c; |
873 | struct device *dev = sd->v4l2_dev->dev; | |
874 | struct v4l2_cropcap cap; | |
904078f1 | 875 | int ret; |
6a6c8786 | 876 | unsigned int width, height; |
904078f1 | 877 | |
6a6c8786 GL |
878 | v4l2_subdev_call(sd, video, s_crop, crop); |
879 | ret = client_g_rect(sd, cam_rect); | |
880 | if (ret < 0) | |
881 | return ret; | |
961801bb | 882 | |
6a6c8786 GL |
883 | /* |
884 | * Now cam_crop contains the current camera input rectangle, and it must | |
885 | * be within camera cropcap bounds | |
886 | */ | |
887 | if (!memcmp(rect, cam_rect, sizeof(*rect))) { | |
888 | /* Even if camera S_CROP failed, but camera rectangle matches */ | |
889 | dev_dbg(dev, "Camera S_CROP successful for %ux%u@%u:%u\n", | |
890 | rect->width, rect->height, rect->left, rect->top); | |
891 | return 0; | |
904078f1 GL |
892 | } |
893 | ||
6a6c8786 GL |
894 | /* Try to fix cropping, that camera hasn't managed to set */ |
895 | dev_geo(dev, "Fix camera S_CROP for %ux%u@%u:%u to %ux%u@%u:%u\n", | |
896 | cam_rect->width, cam_rect->height, | |
08590b96 | 897 | cam_rect->left, cam_rect->top, |
6a6c8786 GL |
898 | rect->width, rect->height, rect->left, rect->top); |
899 | ||
900 | /* We need sensor maximum rectangle */ | |
901 | ret = v4l2_subdev_call(sd, video, cropcap, &cap); | |
902 | if (ret < 0) | |
903 | return ret; | |
904 | ||
905 | soc_camera_limit_side(&rect->left, &rect->width, cap.bounds.left, 2, | |
906 | cap.bounds.width); | |
907 | soc_camera_limit_side(&rect->top, &rect->height, cap.bounds.top, 4, | |
908 | cap.bounds.height); | |
904078f1 GL |
909 | |
910 | /* | |
911 | * Popular special case - some cameras can only handle fixed sizes like | |
912 | * QVGA, VGA,... Take care to avoid infinite loop. | |
913 | */ | |
6a6c8786 GL |
914 | width = max(cam_rect->width, 2); |
915 | height = max(cam_rect->height, 2); | |
916 | ||
917 | while (!ret && (is_smaller(cam_rect, rect) || | |
918 | is_inside(cam_rect, rect)) && | |
919 | (cap.bounds.width > width || cap.bounds.height > height)) { | |
961801bb GL |
920 | |
921 | width *= 2; | |
922 | height *= 2; | |
6a6c8786 | 923 | |
08590b96 GL |
924 | cam_rect->width = width; |
925 | cam_rect->height = height; | |
904078f1 | 926 | |
6a6c8786 GL |
927 | /* |
928 | * We do not know what capabilities the camera has to set up | |
929 | * left and top borders. We could try to be smarter in iterating | |
930 | * them, e.g., if camera current left is to the right of the | |
931 | * target left, set it to the middle point between the current | |
932 | * left and minimum left. But that would add too much | |
933 | * complexity: we would have to iterate each border separately. | |
934 | */ | |
935 | if (cam_rect->left > rect->left) | |
936 | cam_rect->left = cap.bounds.left; | |
961801bb | 937 | |
6a6c8786 GL |
938 | if (cam_rect->left + cam_rect->width < rect->left + rect->width) |
939 | cam_rect->width = rect->left + rect->width - | |
08590b96 | 940 | cam_rect->left; |
961801bb | 941 | |
6a6c8786 GL |
942 | if (cam_rect->top > rect->top) |
943 | cam_rect->top = cap.bounds.top; | |
961801bb | 944 | |
6a6c8786 GL |
945 | if (cam_rect->top + cam_rect->height < rect->top + rect->height) |
946 | cam_rect->height = rect->top + rect->height - | |
08590b96 | 947 | cam_rect->top; |
961801bb | 948 | |
6a6c8786 GL |
949 | v4l2_subdev_call(sd, video, s_crop, cam_crop); |
950 | ret = client_g_rect(sd, cam_rect); | |
951 | dev_geo(dev, "Camera S_CROP %d for %ux%u@%u:%u\n", ret, | |
952 | cam_rect->width, cam_rect->height, | |
08590b96 | 953 | cam_rect->left, cam_rect->top); |
904078f1 GL |
954 | } |
955 | ||
6a6c8786 GL |
956 | /* S_CROP must not modify the rectangle */ |
957 | if (is_smaller(cam_rect, rect) || is_inside(cam_rect, rect)) { | |
904078f1 GL |
958 | /* |
959 | * The camera failed to configure a suitable cropping, | |
960 | * we cannot use the current rectangle, set to max | |
961 | */ | |
6a6c8786 GL |
962 | *cam_rect = cap.bounds; |
963 | v4l2_subdev_call(sd, video, s_crop, cam_crop); | |
964 | ret = client_g_rect(sd, cam_rect); | |
965 | dev_geo(dev, "Camera S_CROP %d for max %ux%u@%u:%u\n", ret, | |
966 | cam_rect->width, cam_rect->height, | |
08590b96 | 967 | cam_rect->left, cam_rect->top); |
904078f1 GL |
968 | } |
969 | ||
6a6c8786 GL |
970 | return ret; |
971 | } | |
972 | ||
973 | static int get_camera_scales(struct v4l2_subdev *sd, struct v4l2_rect *rect, | |
974 | unsigned int *scale_h, unsigned int *scale_v) | |
975 | { | |
976 | struct v4l2_format f; | |
977 | int ret; | |
978 | ||
979 | f.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; | |
980 | ||
981 | ret = v4l2_subdev_call(sd, video, g_fmt, &f); | |
982 | if (ret < 0) | |
983 | return ret; | |
984 | ||
985 | *scale_h = calc_generic_scale(rect->width, f.fmt.pix.width); | |
986 | *scale_v = calc_generic_scale(rect->height, f.fmt.pix.height); | |
987 | ||
988 | return 0; | |
989 | } | |
990 | ||
991 | static int get_camera_subwin(struct soc_camera_device *icd, | |
992 | struct v4l2_rect *cam_subrect, | |
993 | unsigned int cam_hscale, unsigned int cam_vscale) | |
994 | { | |
995 | struct sh_mobile_ceu_cam *cam = icd->host_priv; | |
996 | struct v4l2_rect *ceu_rect = &cam->ceu_rect; | |
997 | ||
998 | if (!ceu_rect->width) { | |
999 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); | |
1000 | struct device *dev = icd->dev.parent; | |
1001 | struct v4l2_format f; | |
1002 | struct v4l2_pix_format *pix = &f.fmt.pix; | |
1003 | int ret; | |
1004 | /* First time */ | |
1005 | ||
1006 | f.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; | |
1007 | ||
1008 | ret = v4l2_subdev_call(sd, video, g_fmt, &f); | |
1009 | if (ret < 0) | |
1010 | return ret; | |
1011 | ||
1012 | dev_geo(dev, "camera fmt %ux%u\n", pix->width, pix->height); | |
1013 | ||
1014 | if (pix->width > 2560) { | |
1015 | ceu_rect->width = 2560; | |
1016 | ceu_rect->left = (pix->width - 2560) / 2; | |
1017 | } else { | |
1018 | ceu_rect->width = pix->width; | |
1019 | ceu_rect->left = 0; | |
1020 | } | |
1021 | ||
1022 | if (pix->height > 1920) { | |
1023 | ceu_rect->height = 1920; | |
1024 | ceu_rect->top = (pix->height - 1920) / 2; | |
1025 | } else { | |
1026 | ceu_rect->height = pix->height; | |
1027 | ceu_rect->top = 0; | |
1028 | } | |
1029 | ||
1030 | dev_geo(dev, "initialised CEU rect %ux%u@%u:%u\n", | |
1031 | ceu_rect->width, ceu_rect->height, | |
1032 | ceu_rect->left, ceu_rect->top); | |
1033 | } | |
1034 | ||
1035 | cam_subrect->width = scale_up(ceu_rect->width, cam_hscale); | |
1036 | cam_subrect->left = scale_up(ceu_rect->left, cam_hscale); | |
1037 | cam_subrect->height = scale_up(ceu_rect->height, cam_vscale); | |
1038 | cam_subrect->top = scale_up(ceu_rect->top, cam_vscale); | |
1039 | ||
1040 | return 0; | |
1041 | } | |
1042 | ||
1043 | static int client_s_fmt(struct soc_camera_device *icd, struct v4l2_format *f, | |
1044 | bool ceu_can_scale) | |
1045 | { | |
1046 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); | |
1047 | struct device *dev = icd->dev.parent; | |
1048 | struct v4l2_pix_format *pix = &f->fmt.pix; | |
1049 | unsigned int width = pix->width, height = pix->height, tmp_w, tmp_h; | |
1050 | unsigned int max_width, max_height; | |
1051 | struct v4l2_cropcap cap; | |
1052 | int ret; | |
1053 | ||
1054 | cap.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; | |
1055 | ||
1056 | ret = v4l2_subdev_call(sd, video, cropcap, &cap); | |
1057 | if (ret < 0) | |
1058 | return ret; | |
1059 | ||
1060 | max_width = min(cap.bounds.width, 2560); | |
1061 | max_height = min(cap.bounds.height, 1920); | |
1062 | ||
1063 | ret = v4l2_subdev_call(sd, video, s_fmt, f); | |
1064 | if (ret < 0) | |
1065 | return ret; | |
1066 | ||
1067 | dev_geo(dev, "camera scaled to %ux%u\n", pix->width, pix->height); | |
1068 | ||
1069 | if ((width == pix->width && height == pix->height) || !ceu_can_scale) | |
1070 | return 0; | |
1071 | ||
1072 | /* Camera set a format, but geometry is not precise, try to improve */ | |
1073 | tmp_w = pix->width; | |
1074 | tmp_h = pix->height; | |
1075 | ||
1076 | /* width <= max_width && height <= max_height - guaranteed by try_fmt */ | |
1077 | while ((width > tmp_w || height > tmp_h) && | |
1078 | tmp_w < max_width && tmp_h < max_height) { | |
1079 | tmp_w = min(2 * tmp_w, max_width); | |
1080 | tmp_h = min(2 * tmp_h, max_height); | |
1081 | pix->width = tmp_w; | |
1082 | pix->height = tmp_h; | |
1083 | ret = v4l2_subdev_call(sd, video, s_fmt, f); | |
1084 | dev_geo(dev, "Camera scaled to %ux%u\n", | |
1085 | pix->width, pix->height); | |
1086 | if (ret < 0) { | |
1087 | /* This shouldn't happen */ | |
1088 | dev_err(dev, "Client failed to set format: %d\n", ret); | |
1089 | return ret; | |
1090 | } | |
1091 | } | |
1092 | ||
1093 | return 0; | |
1094 | } | |
1095 | ||
1096 | /** | |
1097 | * @rect - camera cropped rectangle | |
1098 | * @sub_rect - CEU cropped rectangle, mapped back to camera input area | |
1099 | * @ceu_rect - on output calculated CEU crop rectangle | |
1100 | */ | |
1101 | static int client_scale(struct soc_camera_device *icd, struct v4l2_rect *rect, | |
1102 | struct v4l2_rect *sub_rect, struct v4l2_rect *ceu_rect, | |
1103 | struct v4l2_format *f, bool ceu_can_scale) | |
1104 | { | |
1105 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); | |
1106 | struct sh_mobile_ceu_cam *cam = icd->host_priv; | |
1107 | struct device *dev = icd->dev.parent; | |
1108 | struct v4l2_format f_tmp = *f; | |
1109 | struct v4l2_pix_format *pix_tmp = &f_tmp.fmt.pix; | |
1110 | unsigned int scale_h, scale_v; | |
1111 | int ret; | |
1112 | ||
1113 | /* 5. Apply iterative camera S_FMT for camera user window. */ | |
1114 | ret = client_s_fmt(icd, &f_tmp, ceu_can_scale); | |
1115 | if (ret < 0) | |
1116 | return ret; | |
1117 | ||
1118 | dev_geo(dev, "5: camera scaled to %ux%u\n", | |
1119 | pix_tmp->width, pix_tmp->height); | |
1120 | ||
1121 | /* 6. Retrieve camera output window (g_fmt) */ | |
1122 | ||
1123 | /* unneeded - it is already in "f_tmp" */ | |
1124 | ||
1125 | /* 7. Calculate new camera scales. */ | |
1126 | ret = get_camera_scales(sd, rect, &scale_h, &scale_v); | |
1127 | if (ret < 0) | |
1128 | return ret; | |
1129 | ||
1130 | dev_geo(dev, "7: camera scales %u:%u\n", scale_h, scale_v); | |
1131 | ||
1132 | cam->cam_width = pix_tmp->width; | |
1133 | cam->cam_height = pix_tmp->height; | |
1134 | f->fmt.pix.width = pix_tmp->width; | |
1135 | f->fmt.pix.height = pix_tmp->height; | |
904078f1 GL |
1136 | |
1137 | /* | |
6a6c8786 GL |
1138 | * 8. Calculate new CEU crop - apply camera scales to previously |
1139 | * calculated "effective" crop. | |
904078f1 | 1140 | */ |
6a6c8786 GL |
1141 | ceu_rect->left = scale_down(sub_rect->left, scale_h); |
1142 | ceu_rect->width = scale_down(sub_rect->width, scale_h); | |
1143 | ceu_rect->top = scale_down(sub_rect->top, scale_v); | |
1144 | ceu_rect->height = scale_down(sub_rect->height, scale_v); | |
1145 | ||
1146 | dev_geo(dev, "8: new CEU rect %ux%u@%u:%u\n", | |
1147 | ceu_rect->width, ceu_rect->height, | |
1148 | ceu_rect->left, ceu_rect->top); | |
1149 | ||
1150 | return 0; | |
1151 | } | |
1152 | ||
1153 | /* Get combined scales */ | |
1154 | static int get_scales(struct soc_camera_device *icd, | |
1155 | unsigned int *scale_h, unsigned int *scale_v) | |
1156 | { | |
1157 | struct sh_mobile_ceu_cam *cam = icd->host_priv; | |
1158 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); | |
1159 | struct v4l2_crop cam_crop; | |
1160 | unsigned int width_in, height_in; | |
1161 | int ret; | |
904078f1 | 1162 | |
6a6c8786 | 1163 | cam_crop.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; |
904078f1 | 1164 | |
6a6c8786 GL |
1165 | ret = client_g_rect(sd, &cam_crop.c); |
1166 | if (ret < 0) | |
1167 | return ret; | |
904078f1 | 1168 | |
6a6c8786 GL |
1169 | ret = get_camera_scales(sd, &cam_crop.c, scale_h, scale_v); |
1170 | if (ret < 0) | |
1171 | return ret; | |
961801bb | 1172 | |
6a6c8786 GL |
1173 | width_in = scale_up(cam->ceu_rect.width, *scale_h); |
1174 | height_in = scale_up(cam->ceu_rect.height, *scale_v); | |
961801bb | 1175 | |
6a6c8786 GL |
1176 | *scale_h = calc_generic_scale(cam->ceu_rect.width, icd->user_width); |
1177 | *scale_v = calc_generic_scale(cam->ceu_rect.height, icd->user_height); | |
1178 | ||
1179 | return 0; | |
1180 | } | |
1181 | ||
1182 | /* | |
1183 | * CEU can scale and crop, but we don't want to waste bandwidth and kill the | |
1184 | * framerate by always requesting the maximum image from the client. See | |
1185 | * Documentation/video4linux/sh_mobile_camera_ceu.txt for a description of | |
1186 | * scaling and cropping algorithms and for the meaning of referenced here steps. | |
1187 | */ | |
1188 | static int sh_mobile_ceu_set_crop(struct soc_camera_device *icd, | |
1189 | struct v4l2_crop *a) | |
1190 | { | |
1191 | struct v4l2_rect *rect = &a->c; | |
1192 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); | |
1193 | struct sh_mobile_ceu_dev *pcdev = ici->priv; | |
1194 | struct v4l2_crop cam_crop; | |
1195 | struct sh_mobile_ceu_cam *cam = icd->host_priv; | |
1196 | struct v4l2_rect *cam_rect = &cam_crop.c, *ceu_rect = &cam->ceu_rect; | |
1197 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); | |
1198 | struct device *dev = icd->dev.parent; | |
1199 | struct v4l2_format f; | |
1200 | struct v4l2_pix_format *pix = &f.fmt.pix; | |
1201 | unsigned int scale_comb_h, scale_comb_v, scale_ceu_h, scale_ceu_v, | |
1202 | out_width, out_height; | |
1203 | u32 capsr, cflcr; | |
1204 | int ret; | |
1205 | ||
1206 | /* 1. Calculate current combined scales. */ | |
1207 | ret = get_scales(icd, &scale_comb_h, &scale_comb_v); | |
1208 | if (ret < 0) | |
1209 | return ret; | |
1210 | ||
1211 | dev_geo(dev, "1: combined scales %u:%u\n", scale_comb_h, scale_comb_v); | |
1212 | ||
1213 | /* 2. Apply iterative camera S_CROP for new input window. */ | |
1214 | ret = client_s_crop(sd, a, &cam_crop); | |
1215 | if (ret < 0) | |
1216 | return ret; | |
1217 | ||
1218 | dev_geo(dev, "2: camera cropped to %ux%u@%u:%u\n", | |
1219 | cam_rect->width, cam_rect->height, | |
1220 | cam_rect->left, cam_rect->top); | |
1221 | ||
1222 | /* On success cam_crop contains current camera crop */ | |
1223 | ||
1224 | /* | |
1225 | * 3. If old combined scales applied to new crop produce an impossible | |
1226 | * user window, adjust scales to produce nearest possible window. | |
1227 | */ | |
1228 | out_width = scale_down(rect->width, scale_comb_h); | |
1229 | out_height = scale_down(rect->height, scale_comb_v); | |
1230 | ||
1231 | if (out_width > 2560) | |
1232 | out_width = 2560; | |
1233 | else if (out_width < 2) | |
1234 | out_width = 2; | |
1235 | ||
1236 | if (out_height > 1920) | |
1237 | out_height = 1920; | |
1238 | else if (out_height < 4) | |
1239 | out_height = 4; | |
1240 | ||
1241 | dev_geo(dev, "3: Adjusted output %ux%u\n", out_width, out_height); | |
1242 | ||
1243 | /* 4. Use G_CROP to retrieve actual input window: already in cam_crop */ | |
1244 | ||
1245 | /* | |
1246 | * 5. Using actual input window and calculated combined scales calculate | |
1247 | * camera target output window. | |
1248 | */ | |
1249 | pix->width = scale_down(cam_rect->width, scale_comb_h); | |
1250 | pix->height = scale_down(cam_rect->height, scale_comb_v); | |
1251 | ||
1252 | dev_geo(dev, "5: camera target %ux%u\n", pix->width, pix->height); | |
1253 | ||
1254 | /* 6. - 9. */ | |
1255 | pix->pixelformat = cam->camera_fmt->fourcc; | |
1256 | pix->colorspace = cam->camera_fmt->colorspace; | |
1257 | ||
1258 | capsr = capture_save_reset(pcdev); | |
1259 | dev_dbg(dev, "CAPSR 0x%x, CFLCR 0x%x\n", capsr, pcdev->cflcr); | |
1260 | ||
1261 | /* Make relative to camera rectangle */ | |
1262 | rect->left -= cam_rect->left; | |
1263 | rect->top -= cam_rect->top; | |
1264 | ||
1265 | f.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; | |
1266 | ||
1267 | ret = client_scale(icd, cam_rect, rect, ceu_rect, &f, | |
1268 | pcdev->image_mode && !pcdev->is_interlaced); | |
1269 | ||
1270 | dev_geo(dev, "6-9: %d\n", ret); | |
1271 | ||
1272 | /* 10. Use CEU cropping to crop to the new window. */ | |
1273 | sh_mobile_ceu_set_rect(icd, out_width, out_height); | |
1274 | ||
1275 | dev_geo(dev, "10: CEU cropped to %ux%u@%u:%u\n", | |
1276 | ceu_rect->width, ceu_rect->height, | |
1277 | ceu_rect->left, ceu_rect->top); | |
1278 | ||
1279 | /* | |
1280 | * 11. Calculate CEU scales from camera scales from results of (10) and | |
1281 | * user window from (3) | |
1282 | */ | |
1283 | scale_ceu_h = calc_scale(ceu_rect->width, &out_width); | |
1284 | scale_ceu_v = calc_scale(ceu_rect->height, &out_height); | |
1285 | ||
1286 | dev_geo(dev, "11: CEU scales %u:%u\n", scale_ceu_h, scale_ceu_v); | |
1287 | ||
1288 | /* 12. Apply CEU scales. */ | |
1289 | cflcr = scale_ceu_h | (scale_ceu_v << 16); | |
1290 | if (cflcr != pcdev->cflcr) { | |
1291 | pcdev->cflcr = cflcr; | |
1292 | ceu_write(pcdev, CFLCR, cflcr); | |
1293 | } | |
1294 | ||
1295 | /* Restore capture */ | |
904078f1 GL |
1296 | if (pcdev->active) |
1297 | capsr |= 1; | |
904078f1 GL |
1298 | capture_restore(pcdev, capsr); |
1299 | ||
6a6c8786 GL |
1300 | icd->user_width = out_width; |
1301 | icd->user_height = out_height; | |
1302 | ||
904078f1 GL |
1303 | /* Even if only camera cropping succeeded */ |
1304 | return ret; | |
09e231b3 GL |
1305 | } |
1306 | ||
961801bb | 1307 | /* Similar to set_crop multistage iterative algorithm */ |
d8fac217 | 1308 | static int sh_mobile_ceu_set_fmt(struct soc_camera_device *icd, |
09e231b3 | 1309 | struct v4l2_format *f) |
0d3244d6 | 1310 | { |
9414de39 | 1311 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); |
961801bb | 1312 | struct sh_mobile_ceu_dev *pcdev = ici->priv; |
904078f1 GL |
1313 | struct sh_mobile_ceu_cam *cam = icd->host_priv; |
1314 | struct v4l2_pix_format *pix = &f->fmt.pix; | |
6a6c8786 GL |
1315 | struct v4l2_format cam_f = *f; |
1316 | struct v4l2_pix_format *cam_pix = &cam_f.fmt.pix; | |
c9c1f1c0 | 1317 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
6a6c8786 | 1318 | struct device *dev = icd->dev.parent; |
904078f1 | 1319 | __u32 pixfmt = pix->pixelformat; |
9414de39 | 1320 | const struct soc_camera_format_xlate *xlate; |
6a6c8786 GL |
1321 | struct v4l2_crop cam_crop; |
1322 | struct v4l2_rect *cam_rect = &cam_crop.c, cam_subrect, ceu_rect; | |
1323 | unsigned int scale_cam_h, scale_cam_v; | |
1324 | u16 scale_v, scale_h; | |
1325 | int ret; | |
1326 | bool is_interlaced, image_mode; | |
961801bb GL |
1327 | |
1328 | switch (pix->field) { | |
1329 | case V4L2_FIELD_INTERLACED: | |
6a6c8786 | 1330 | is_interlaced = true; |
961801bb GL |
1331 | break; |
1332 | case V4L2_FIELD_ANY: | |
1333 | default: | |
1334 | pix->field = V4L2_FIELD_NONE; | |
1335 | /* fall-through */ | |
1336 | case V4L2_FIELD_NONE: | |
6a6c8786 | 1337 | is_interlaced = false; |
961801bb GL |
1338 | break; |
1339 | } | |
25c4d74e | 1340 | |
9414de39 MD |
1341 | xlate = soc_camera_xlate_by_fourcc(icd, pixfmt); |
1342 | if (!xlate) { | |
6a6c8786 | 1343 | dev_warn(dev, "Format %x not found\n", pixfmt); |
9414de39 | 1344 | return -EINVAL; |
25c4d74e GL |
1345 | } |
1346 | ||
6a6c8786 GL |
1347 | /* 1. Calculate current camera scales. */ |
1348 | cam_crop.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; | |
1349 | ||
1350 | ret = client_g_rect(sd, cam_rect); | |
1351 | if (ret < 0) | |
1352 | return ret; | |
1353 | ||
1354 | ret = get_camera_scales(sd, cam_rect, &scale_cam_h, &scale_cam_v); | |
1355 | if (ret < 0) | |
1356 | return ret; | |
1357 | ||
1358 | dev_geo(dev, "1: camera scales %u:%u\n", scale_cam_h, scale_cam_v); | |
1359 | ||
1360 | /* | |
1361 | * 2. Calculate "effective" input crop (sensor subwindow) - CEU crop | |
1362 | * scaled back at current camera scales onto input window. | |
1363 | */ | |
1364 | ret = get_camera_subwin(icd, &cam_subrect, scale_cam_h, scale_cam_v); | |
961801bb GL |
1365 | if (ret < 0) |
1366 | return ret; | |
1367 | ||
6a6c8786 GL |
1368 | dev_geo(dev, "2: subwin %ux%u@%u:%u\n", |
1369 | cam_subrect.width, cam_subrect.height, | |
1370 | cam_subrect.left, cam_subrect.top); | |
1371 | ||
1372 | /* | |
1373 | * 3. Calculate new combined scales from "effective" input window to | |
1374 | * requested user window. | |
1375 | */ | |
1376 | scale_h = calc_generic_scale(cam_subrect.width, pix->width); | |
1377 | scale_v = calc_generic_scale(cam_subrect.height, pix->height); | |
1378 | ||
1379 | dev_geo(dev, "3: scales %u:%u\n", scale_h, scale_v); | |
1380 | ||
1381 | /* | |
1382 | * 4. Calculate camera output window by applying combined scales to real | |
1383 | * input window. | |
1384 | */ | |
1385 | cam_pix->width = scale_down(cam_rect->width, scale_h); | |
1386 | cam_pix->height = scale_down(cam_rect->height, scale_v); | |
1387 | cam_pix->pixelformat = xlate->cam_fmt->fourcc; | |
1388 | ||
961801bb GL |
1389 | switch (pixfmt) { |
1390 | case V4L2_PIX_FMT_NV12: | |
1391 | case V4L2_PIX_FMT_NV21: | |
1392 | case V4L2_PIX_FMT_NV16: | |
1393 | case V4L2_PIX_FMT_NV61: | |
6a6c8786 | 1394 | image_mode = true; |
961801bb GL |
1395 | break; |
1396 | default: | |
6a6c8786 | 1397 | image_mode = false; |
9414de39 | 1398 | } |
25c4d74e | 1399 | |
6a6c8786 GL |
1400 | dev_geo(dev, "4: camera output %ux%u\n", |
1401 | cam_pix->width, cam_pix->height); | |
961801bb | 1402 | |
6a6c8786 GL |
1403 | /* 5. - 9. */ |
1404 | ret = client_scale(icd, cam_rect, &cam_subrect, &ceu_rect, &cam_f, | |
1405 | image_mode && !is_interlaced); | |
1406 | ||
1407 | dev_geo(dev, "5-9: client scale %d\n", ret); | |
1408 | ||
1409 | /* Done with the camera. Now see if we can improve the result */ | |
1410 | ||
1411 | dev_dbg(dev, "Camera %d fmt %ux%u, requested %ux%u\n", | |
1412 | ret, cam_pix->width, cam_pix->height, pix->width, pix->height); | |
1413 | if (ret < 0) | |
1414 | return ret; | |
1415 | ||
1416 | /* 10. Use CEU scaling to scale to the requested user window. */ | |
961801bb GL |
1417 | |
1418 | /* We cannot scale up */ | |
6a6c8786 GL |
1419 | if (pix->width > cam_pix->width) |
1420 | pix->width = cam_pix->width; | |
1421 | if (pix->width > ceu_rect.width) | |
1422 | pix->width = ceu_rect.width; | |
961801bb | 1423 | |
6a6c8786 GL |
1424 | if (pix->height > cam_pix->height) |
1425 | pix->height = cam_pix->height; | |
1426 | if (pix->height > ceu_rect.height) | |
1427 | pix->height = ceu_rect.height; | |
961801bb GL |
1428 | |
1429 | /* Let's rock: scale pix->{width x height} down to width x height */ | |
6a6c8786 GL |
1430 | scale_h = calc_scale(ceu_rect.width, &pix->width); |
1431 | scale_v = calc_scale(ceu_rect.height, &pix->height); | |
961801bb | 1432 | |
6a6c8786 GL |
1433 | dev_geo(dev, "10: W: %u : 0x%x = %u, H: %u : 0x%x = %u\n", |
1434 | ceu_rect.width, scale_h, pix->width, | |
1435 | ceu_rect.height, scale_v, pix->height); | |
961801bb | 1436 | |
6a6c8786 | 1437 | pcdev->cflcr = scale_h | (scale_v << 16); |
961801bb GL |
1438 | |
1439 | icd->buswidth = xlate->buswidth; | |
1440 | icd->current_fmt = xlate->host_fmt; | |
1441 | cam->camera_fmt = xlate->cam_fmt; | |
6a6c8786 | 1442 | cam->ceu_rect = ceu_rect; |
961801bb GL |
1443 | |
1444 | pcdev->is_interlaced = is_interlaced; | |
6a6c8786 | 1445 | pcdev->image_mode = image_mode; |
961801bb GL |
1446 | |
1447 | return 0; | |
0d3244d6 MD |
1448 | } |
1449 | ||
d8fac217 GL |
1450 | static int sh_mobile_ceu_try_fmt(struct soc_camera_device *icd, |
1451 | struct v4l2_format *f) | |
0d3244d6 | 1452 | { |
9414de39 | 1453 | const struct soc_camera_format_xlate *xlate; |
904078f1 | 1454 | struct v4l2_pix_format *pix = &f->fmt.pix; |
c9c1f1c0 | 1455 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
904078f1 | 1456 | __u32 pixfmt = pix->pixelformat; |
961801bb | 1457 | int width, height; |
ccab8a29 | 1458 | int ret; |
a2c8c68c | 1459 | |
9414de39 MD |
1460 | xlate = soc_camera_xlate_by_fourcc(icd, pixfmt); |
1461 | if (!xlate) { | |
0166b743 | 1462 | dev_warn(icd->dev.parent, "Format %x not found\n", pixfmt); |
25c4d74e | 1463 | return -EINVAL; |
9414de39 | 1464 | } |
25c4d74e | 1465 | |
0d3244d6 MD |
1466 | /* FIXME: calculate using depth and bus width */ |
1467 | ||
904078f1 GL |
1468 | v4l_bound_align_image(&pix->width, 2, 2560, 1, |
1469 | &pix->height, 4, 1920, 2, 0); | |
0d3244d6 | 1470 | |
961801bb GL |
1471 | width = pix->width; |
1472 | height = pix->height; | |
1473 | ||
904078f1 | 1474 | pix->bytesperline = pix->width * |
9414de39 | 1475 | DIV_ROUND_UP(xlate->host_fmt->depth, 8); |
904078f1 | 1476 | pix->sizeimage = pix->height * pix->bytesperline; |
25c4d74e | 1477 | |
904078f1 | 1478 | pix->pixelformat = xlate->cam_fmt->fourcc; |
979ea1dd | 1479 | |
0d3244d6 | 1480 | /* limit to sensor capabilities */ |
c9c1f1c0 | 1481 | ret = v4l2_subdev_call(sd, video, try_fmt, f); |
904078f1 | 1482 | pix->pixelformat = pixfmt; |
ccab8a29 KM |
1483 | if (ret < 0) |
1484 | return ret; | |
1485 | ||
961801bb GL |
1486 | switch (pixfmt) { |
1487 | case V4L2_PIX_FMT_NV12: | |
1488 | case V4L2_PIX_FMT_NV21: | |
1489 | case V4L2_PIX_FMT_NV16: | |
1490 | case V4L2_PIX_FMT_NV61: | |
1491 | /* FIXME: check against rect_max after converting soc-camera */ | |
1492 | /* We can scale precisely, need a bigger image from camera */ | |
1493 | if (pix->width < width || pix->height < height) { | |
1494 | int tmp_w = pix->width, tmp_h = pix->height; | |
1495 | pix->width = 2560; | |
1496 | pix->height = 1920; | |
c9c1f1c0 | 1497 | ret = v4l2_subdev_call(sd, video, try_fmt, f); |
961801bb GL |
1498 | if (ret < 0) { |
1499 | /* Shouldn't actually happen... */ | |
0166b743 | 1500 | dev_err(icd->dev.parent, |
961801bb GL |
1501 | "FIXME: try_fmt() returned %d\n", ret); |
1502 | pix->width = tmp_w; | |
1503 | pix->height = tmp_h; | |
1504 | } | |
1505 | } | |
1506 | if (pix->width > width) | |
1507 | pix->width = width; | |
1508 | if (pix->height > height) | |
1509 | pix->height = height; | |
ccab8a29 KM |
1510 | } |
1511 | ||
1512 | return ret; | |
0d3244d6 MD |
1513 | } |
1514 | ||
1515 | static int sh_mobile_ceu_reqbufs(struct soc_camera_file *icf, | |
1516 | struct v4l2_requestbuffers *p) | |
1517 | { | |
1518 | int i; | |
1519 | ||
1520 | /* This is for locking debugging only. I removed spinlocks and now I | |
1521 | * check whether .prepare is ever called on a linked buffer, or whether | |
1522 | * a dma IRQ can occur for an in-work or unlinked buffer. Until now | |
1523 | * it hadn't triggered */ | |
1524 | for (i = 0; i < p->count; i++) { | |
1525 | struct sh_mobile_ceu_buffer *buf; | |
1526 | ||
1527 | buf = container_of(icf->vb_vidq.bufs[i], | |
1528 | struct sh_mobile_ceu_buffer, vb); | |
1529 | INIT_LIST_HEAD(&buf->vb.queue); | |
1530 | } | |
1531 | ||
1532 | return 0; | |
1533 | } | |
1534 | ||
1535 | static unsigned int sh_mobile_ceu_poll(struct file *file, poll_table *pt) | |
1536 | { | |
1537 | struct soc_camera_file *icf = file->private_data; | |
1538 | struct sh_mobile_ceu_buffer *buf; | |
1539 | ||
1540 | buf = list_entry(icf->vb_vidq.stream.next, | |
1541 | struct sh_mobile_ceu_buffer, vb.stream); | |
1542 | ||
1543 | poll_wait(file, &buf->vb.done, pt); | |
1544 | ||
1545 | if (buf->vb.state == VIDEOBUF_DONE || | |
1546 | buf->vb.state == VIDEOBUF_ERROR) | |
1547 | return POLLIN|POLLRDNORM; | |
1548 | ||
1549 | return 0; | |
1550 | } | |
1551 | ||
1552 | static int sh_mobile_ceu_querycap(struct soc_camera_host *ici, | |
1553 | struct v4l2_capability *cap) | |
1554 | { | |
1555 | strlcpy(cap->card, "SuperH_Mobile_CEU", sizeof(cap->card)); | |
1556 | cap->version = KERNEL_VERSION(0, 0, 5); | |
1557 | cap->capabilities = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING; | |
1558 | return 0; | |
1559 | } | |
1560 | ||
1561 | static void sh_mobile_ceu_init_videobuf(struct videobuf_queue *q, | |
1562 | struct soc_camera_device *icd) | |
1563 | { | |
1564 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); | |
1565 | struct sh_mobile_ceu_dev *pcdev = ici->priv; | |
1566 | ||
1567 | videobuf_queue_dma_contig_init(q, | |
1568 | &sh_mobile_ceu_videobuf_ops, | |
0166b743 | 1569 | icd->dev.parent, &pcdev->lock, |
0d3244d6 | 1570 | V4L2_BUF_TYPE_VIDEO_CAPTURE, |
e802967c GL |
1571 | pcdev->is_interlaced ? |
1572 | V4L2_FIELD_INTERLACED : V4L2_FIELD_NONE, | |
0d3244d6 MD |
1573 | sizeof(struct sh_mobile_ceu_buffer), |
1574 | icd); | |
1575 | } | |
1576 | ||
4a6110bc GL |
1577 | static int sh_mobile_ceu_get_ctrl(struct soc_camera_device *icd, |
1578 | struct v4l2_control *ctrl) | |
1579 | { | |
1580 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); | |
1581 | struct sh_mobile_ceu_dev *pcdev = ici->priv; | |
1582 | u32 val; | |
1583 | ||
1584 | switch (ctrl->id) { | |
1585 | case V4L2_CID_SHARPNESS: | |
1586 | val = ceu_read(pcdev, CLFCR); | |
1587 | ctrl->value = val ^ 1; | |
1588 | return 0; | |
1589 | } | |
1590 | return -ENOIOCTLCMD; | |
1591 | } | |
1592 | ||
1593 | static int sh_mobile_ceu_set_ctrl(struct soc_camera_device *icd, | |
1594 | struct v4l2_control *ctrl) | |
1595 | { | |
1596 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); | |
1597 | struct sh_mobile_ceu_dev *pcdev = ici->priv; | |
1598 | ||
1599 | switch (ctrl->id) { | |
1600 | case V4L2_CID_SHARPNESS: | |
1601 | switch (icd->current_fmt->fourcc) { | |
1602 | case V4L2_PIX_FMT_NV12: | |
1603 | case V4L2_PIX_FMT_NV21: | |
1604 | case V4L2_PIX_FMT_NV16: | |
1605 | case V4L2_PIX_FMT_NV61: | |
1606 | ceu_write(pcdev, CLFCR, !ctrl->value); | |
1607 | return 0; | |
1608 | } | |
1609 | return -EINVAL; | |
1610 | } | |
1611 | return -ENOIOCTLCMD; | |
1612 | } | |
1613 | ||
1614 | static const struct v4l2_queryctrl sh_mobile_ceu_controls[] = { | |
1615 | { | |
1616 | .id = V4L2_CID_SHARPNESS, | |
1617 | .type = V4L2_CTRL_TYPE_BOOLEAN, | |
1618 | .name = "Low-pass filter", | |
1619 | .minimum = 0, | |
1620 | .maximum = 1, | |
1621 | .step = 1, | |
1622 | .default_value = 0, | |
1623 | }, | |
1624 | }; | |
1625 | ||
0d3244d6 MD |
1626 | static struct soc_camera_host_ops sh_mobile_ceu_host_ops = { |
1627 | .owner = THIS_MODULE, | |
1628 | .add = sh_mobile_ceu_add_device, | |
1629 | .remove = sh_mobile_ceu_remove_device, | |
9414de39 | 1630 | .get_formats = sh_mobile_ceu_get_formats, |
904078f1 | 1631 | .put_formats = sh_mobile_ceu_put_formats, |
09e231b3 | 1632 | .set_crop = sh_mobile_ceu_set_crop, |
d8fac217 GL |
1633 | .set_fmt = sh_mobile_ceu_set_fmt, |
1634 | .try_fmt = sh_mobile_ceu_try_fmt, | |
4a6110bc GL |
1635 | .set_ctrl = sh_mobile_ceu_set_ctrl, |
1636 | .get_ctrl = sh_mobile_ceu_get_ctrl, | |
0d3244d6 MD |
1637 | .reqbufs = sh_mobile_ceu_reqbufs, |
1638 | .poll = sh_mobile_ceu_poll, | |
1639 | .querycap = sh_mobile_ceu_querycap, | |
0d3244d6 MD |
1640 | .set_bus_param = sh_mobile_ceu_set_bus_param, |
1641 | .init_videobuf = sh_mobile_ceu_init_videobuf, | |
4a6110bc GL |
1642 | .controls = sh_mobile_ceu_controls, |
1643 | .num_controls = ARRAY_SIZE(sh_mobile_ceu_controls), | |
0d3244d6 MD |
1644 | }; |
1645 | ||
979ea1dd | 1646 | static int __devinit sh_mobile_ceu_probe(struct platform_device *pdev) |
0d3244d6 MD |
1647 | { |
1648 | struct sh_mobile_ceu_dev *pcdev; | |
1649 | struct resource *res; | |
1650 | void __iomem *base; | |
1651 | unsigned int irq; | |
1652 | int err = 0; | |
1653 | ||
1654 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); | |
1655 | irq = platform_get_irq(pdev, 0); | |
1656 | if (!res || !irq) { | |
1657 | dev_err(&pdev->dev, "Not enough CEU platform resources.\n"); | |
1658 | err = -ENODEV; | |
1659 | goto exit; | |
1660 | } | |
1661 | ||
1662 | pcdev = kzalloc(sizeof(*pcdev), GFP_KERNEL); | |
1663 | if (!pcdev) { | |
1664 | dev_err(&pdev->dev, "Could not allocate pcdev\n"); | |
1665 | err = -ENOMEM; | |
1666 | goto exit; | |
1667 | } | |
1668 | ||
0d3244d6 MD |
1669 | INIT_LIST_HEAD(&pcdev->capture); |
1670 | spin_lock_init(&pcdev->lock); | |
1671 | ||
1672 | pcdev->pdata = pdev->dev.platform_data; | |
1673 | if (!pcdev->pdata) { | |
1674 | err = -EINVAL; | |
1675 | dev_err(&pdev->dev, "CEU platform data not set.\n"); | |
1676 | goto exit_kfree; | |
1677 | } | |
1678 | ||
eb6c8558 | 1679 | base = ioremap_nocache(res->start, resource_size(res)); |
0d3244d6 MD |
1680 | if (!base) { |
1681 | err = -ENXIO; | |
1682 | dev_err(&pdev->dev, "Unable to ioremap CEU registers.\n"); | |
1683 | goto exit_kfree; | |
1684 | } | |
1685 | ||
1686 | pcdev->irq = irq; | |
1687 | pcdev->base = base; | |
1688 | pcdev->video_limit = 0; /* only enabled if second resource exists */ | |
0d3244d6 MD |
1689 | |
1690 | res = platform_get_resource(pdev, IORESOURCE_MEM, 1); | |
1691 | if (res) { | |
1692 | err = dma_declare_coherent_memory(&pdev->dev, res->start, | |
1693 | res->start, | |
eb6c8558 | 1694 | resource_size(res), |
0d3244d6 MD |
1695 | DMA_MEMORY_MAP | |
1696 | DMA_MEMORY_EXCLUSIVE); | |
1697 | if (!err) { | |
1698 | dev_err(&pdev->dev, "Unable to declare CEU memory.\n"); | |
1699 | err = -ENXIO; | |
1700 | goto exit_iounmap; | |
1701 | } | |
1702 | ||
eb6c8558 | 1703 | pcdev->video_limit = resource_size(res); |
0d3244d6 MD |
1704 | } |
1705 | ||
1706 | /* request irq */ | |
1707 | err = request_irq(pcdev->irq, sh_mobile_ceu_irq, IRQF_DISABLED, | |
af128a10 | 1708 | dev_name(&pdev->dev), pcdev); |
0d3244d6 MD |
1709 | if (err) { |
1710 | dev_err(&pdev->dev, "Unable to register CEU interrupt.\n"); | |
1711 | goto exit_release_mem; | |
1712 | } | |
1713 | ||
6d1386c6 MD |
1714 | pm_suspend_ignore_children(&pdev->dev, true); |
1715 | pm_runtime_enable(&pdev->dev); | |
1716 | pm_runtime_resume(&pdev->dev); | |
a42b6dd6 | 1717 | |
0d3244d6 | 1718 | pcdev->ici.priv = pcdev; |
979ea1dd | 1719 | pcdev->ici.v4l2_dev.dev = &pdev->dev; |
0d3244d6 | 1720 | pcdev->ici.nr = pdev->id; |
af128a10 KS |
1721 | pcdev->ici.drv_name = dev_name(&pdev->dev); |
1722 | pcdev->ici.ops = &sh_mobile_ceu_host_ops; | |
0d3244d6 MD |
1723 | |
1724 | err = soc_camera_host_register(&pcdev->ici); | |
1725 | if (err) | |
6d1386c6 | 1726 | goto exit_free_irq; |
0d3244d6 MD |
1727 | |
1728 | return 0; | |
1729 | ||
1730 | exit_free_irq: | |
1731 | free_irq(pcdev->irq, pcdev); | |
1732 | exit_release_mem: | |
1733 | if (platform_get_resource(pdev, IORESOURCE_MEM, 1)) | |
1734 | dma_release_declared_memory(&pdev->dev); | |
1735 | exit_iounmap: | |
1736 | iounmap(base); | |
1737 | exit_kfree: | |
1738 | kfree(pcdev); | |
1739 | exit: | |
1740 | return err; | |
1741 | } | |
1742 | ||
979ea1dd | 1743 | static int __devexit sh_mobile_ceu_remove(struct platform_device *pdev) |
0d3244d6 | 1744 | { |
eff505fa GL |
1745 | struct soc_camera_host *soc_host = to_soc_camera_host(&pdev->dev); |
1746 | struct sh_mobile_ceu_dev *pcdev = container_of(soc_host, | |
1747 | struct sh_mobile_ceu_dev, ici); | |
0d3244d6 | 1748 | |
eff505fa | 1749 | soc_camera_host_unregister(soc_host); |
0d3244d6 MD |
1750 | free_irq(pcdev->irq, pcdev); |
1751 | if (platform_get_resource(pdev, IORESOURCE_MEM, 1)) | |
1752 | dma_release_declared_memory(&pdev->dev); | |
1753 | iounmap(pcdev->base); | |
1754 | kfree(pcdev); | |
1755 | return 0; | |
1756 | } | |
1757 | ||
6d1386c6 MD |
1758 | static int sh_mobile_ceu_runtime_nop(struct device *dev) |
1759 | { | |
1760 | /* Runtime PM callback shared between ->runtime_suspend() | |
1761 | * and ->runtime_resume(). Simply returns success. | |
1762 | * | |
1763 | * This driver re-initializes all registers after | |
1764 | * pm_runtime_get_sync() anyway so there is no need | |
1765 | * to save and restore registers here. | |
1766 | */ | |
1767 | return 0; | |
1768 | } | |
1769 | ||
1770 | static struct dev_pm_ops sh_mobile_ceu_dev_pm_ops = { | |
1771 | .runtime_suspend = sh_mobile_ceu_runtime_nop, | |
1772 | .runtime_resume = sh_mobile_ceu_runtime_nop, | |
1773 | }; | |
1774 | ||
0d3244d6 MD |
1775 | static struct platform_driver sh_mobile_ceu_driver = { |
1776 | .driver = { | |
1777 | .name = "sh_mobile_ceu", | |
6d1386c6 | 1778 | .pm = &sh_mobile_ceu_dev_pm_ops, |
0d3244d6 MD |
1779 | }, |
1780 | .probe = sh_mobile_ceu_probe, | |
979ea1dd | 1781 | .remove = __exit_p(sh_mobile_ceu_remove), |
0d3244d6 MD |
1782 | }; |
1783 | ||
1784 | static int __init sh_mobile_ceu_init(void) | |
1785 | { | |
1786 | return platform_driver_register(&sh_mobile_ceu_driver); | |
1787 | } | |
1788 | ||
1789 | static void __exit sh_mobile_ceu_exit(void) | |
1790 | { | |
01c1e4ca | 1791 | platform_driver_unregister(&sh_mobile_ceu_driver); |
0d3244d6 MD |
1792 | } |
1793 | ||
1794 | module_init(sh_mobile_ceu_init); | |
1795 | module_exit(sh_mobile_ceu_exit); | |
1796 | ||
1797 | MODULE_DESCRIPTION("SuperH Mobile CEU driver"); | |
1798 | MODULE_AUTHOR("Magnus Damm"); | |
1799 | MODULE_LICENSE("GPL"); | |
40e2e092 | 1800 | MODULE_ALIAS("platform:sh_mobile_ceu"); |