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> |
f39c1ab3 | 34 | #include <linux/sched.h> |
0d3244d6 MD |
35 | |
36 | #include <media/v4l2-common.h> | |
37 | #include <media/v4l2-dev.h> | |
38 | #include <media/soc_camera.h> | |
39 | #include <media/sh_mobile_ceu.h> | |
40 | #include <media/videobuf-dma-contig.h> | |
41 | ||
42 | /* register offsets for sh7722 / sh7723 */ | |
43 | ||
dd54203b MD |
44 | #define CAPSR 0x00 /* Capture start register */ |
45 | #define CAPCR 0x04 /* Capture control register */ | |
46 | #define CAMCR 0x08 /* Capture interface control register */ | |
47 | #define CMCYR 0x0c /* Capture interface cycle register */ | |
48 | #define CAMOR 0x10 /* Capture interface offset register */ | |
49 | #define CAPWR 0x14 /* Capture interface width register */ | |
50 | #define CAIFR 0x18 /* Capture interface input format register */ | |
51 | #define CSTCR 0x20 /* Camera strobe control register (<= sh7722) */ | |
52 | #define CSECR 0x24 /* Camera strobe emission count register (<= sh7722) */ | |
53 | #define CRCNTR 0x28 /* CEU register control register */ | |
54 | #define CRCMPR 0x2c /* CEU register forcible control register */ | |
55 | #define CFLCR 0x30 /* Capture filter control register */ | |
56 | #define CFSZR 0x34 /* Capture filter size clip register */ | |
57 | #define CDWDR 0x38 /* Capture destination width register */ | |
58 | #define CDAYR 0x3c /* Capture data address Y register */ | |
59 | #define CDACR 0x40 /* Capture data address C register */ | |
60 | #define CDBYR 0x44 /* Capture data bottom-field address Y register */ | |
61 | #define CDBCR 0x48 /* Capture data bottom-field address C register */ | |
62 | #define CBDSR 0x4c /* Capture bundle destination size register */ | |
63 | #define CFWCR 0x5c /* Firewall operation control register */ | |
64 | #define CLFCR 0x60 /* Capture low-pass filter control register */ | |
65 | #define CDOCR 0x64 /* Capture data output control register */ | |
66 | #define CDDCR 0x68 /* Capture data complexity level register */ | |
67 | #define CDDAR 0x6c /* Capture data complexity level address register */ | |
68 | #define CEIER 0x70 /* Capture event interrupt enable register */ | |
69 | #define CETCR 0x74 /* Capture event flag clear register */ | |
70 | #define CSTSR 0x7c /* Capture status register */ | |
71 | #define CSRTR 0x80 /* Capture software reset register */ | |
72 | #define CDSSR 0x84 /* Capture data size register */ | |
73 | #define CDAYR2 0x90 /* Capture data address Y register 2 */ | |
74 | #define CDACR2 0x94 /* Capture data address C register 2 */ | |
75 | #define CDBYR2 0x98 /* Capture data bottom-field address Y register 2 */ | |
76 | #define CDBCR2 0x9c /* Capture data bottom-field address C register 2 */ | |
0d3244d6 | 77 | |
6a6c8786 GL |
78 | #undef DEBUG_GEOMETRY |
79 | #ifdef DEBUG_GEOMETRY | |
80 | #define dev_geo dev_info | |
81 | #else | |
82 | #define dev_geo dev_dbg | |
83 | #endif | |
84 | ||
0d3244d6 MD |
85 | /* per video frame buffer */ |
86 | struct sh_mobile_ceu_buffer { | |
87 | struct videobuf_buffer vb; /* v4l buffer must be first */ | |
88 | const struct soc_camera_data_format *fmt; | |
89 | }; | |
90 | ||
91 | struct sh_mobile_ceu_dev { | |
0d3244d6 MD |
92 | struct soc_camera_host ici; |
93 | struct soc_camera_device *icd; | |
94 | ||
95 | unsigned int irq; | |
96 | void __iomem *base; | |
97 | unsigned long video_limit; | |
98 | ||
c60f2b5c | 99 | /* lock used to protect videobuf */ |
0d3244d6 MD |
100 | spinlock_t lock; |
101 | struct list_head capture; | |
102 | struct videobuf_buffer *active; | |
103 | ||
104 | struct sh_mobile_ceu_info *pdata; | |
8be65dc5 | 105 | |
961801bb GL |
106 | u32 cflcr; |
107 | ||
904078f1 GL |
108 | unsigned int is_interlaced:1; |
109 | unsigned int image_mode:1; | |
110 | unsigned int is_16bit:1; | |
111 | }; | |
112 | ||
113 | struct sh_mobile_ceu_cam { | |
6a6c8786 GL |
114 | struct v4l2_rect ceu_rect; |
115 | unsigned int cam_width; | |
116 | unsigned int cam_height; | |
904078f1 | 117 | const struct soc_camera_data_format *extra_fmt; |
8be65dc5 | 118 | const struct soc_camera_data_format *camera_fmt; |
0d3244d6 MD |
119 | }; |
120 | ||
c354b400 KM |
121 | static unsigned long make_bus_param(struct sh_mobile_ceu_dev *pcdev) |
122 | { | |
123 | unsigned long flags; | |
124 | ||
125 | flags = SOCAM_MASTER | | |
126 | SOCAM_PCLK_SAMPLE_RISING | | |
127 | SOCAM_HSYNC_ACTIVE_HIGH | | |
128 | SOCAM_HSYNC_ACTIVE_LOW | | |
129 | SOCAM_VSYNC_ACTIVE_HIGH | | |
130 | SOCAM_VSYNC_ACTIVE_LOW | | |
131 | SOCAM_DATA_ACTIVE_HIGH; | |
132 | ||
133 | if (pcdev->pdata->flags & SH_CEU_FLAG_USE_8BIT_BUS) | |
134 | flags |= SOCAM_DATAWIDTH_8; | |
135 | ||
136 | if (pcdev->pdata->flags & SH_CEU_FLAG_USE_16BIT_BUS) | |
137 | flags |= SOCAM_DATAWIDTH_16; | |
138 | ||
139 | if (flags & SOCAM_DATAWIDTH_MASK) | |
140 | return flags; | |
141 | ||
142 | return 0; | |
143 | } | |
144 | ||
0d3244d6 | 145 | static void ceu_write(struct sh_mobile_ceu_dev *priv, |
7a1a8164 | 146 | unsigned long reg_offs, u32 data) |
0d3244d6 MD |
147 | { |
148 | iowrite32(data, priv->base + reg_offs); | |
149 | } | |
150 | ||
7a1a8164 | 151 | static u32 ceu_read(struct sh_mobile_ceu_dev *priv, unsigned long reg_offs) |
0d3244d6 MD |
152 | { |
153 | return ioread32(priv->base + reg_offs); | |
154 | } | |
155 | ||
b1de7aeb KM |
156 | static int sh_mobile_ceu_soft_reset(struct sh_mobile_ceu_dev *pcdev) |
157 | { | |
158 | int i, success = 0; | |
159 | struct soc_camera_device *icd = pcdev->icd; | |
160 | ||
161 | ceu_write(pcdev, CAPSR, 1 << 16); /* reset */ | |
162 | ||
163 | /* wait CSTSR.CPTON bit */ | |
164 | for (i = 0; i < 1000; i++) { | |
165 | if (!(ceu_read(pcdev, CSTSR) & 1)) { | |
166 | success++; | |
167 | break; | |
168 | } | |
169 | udelay(1); | |
170 | } | |
171 | ||
172 | /* wait CAPSR.CPKIL bit */ | |
173 | for (i = 0; i < 1000; i++) { | |
174 | if (!(ceu_read(pcdev, CAPSR) & (1 << 16))) { | |
175 | success++; | |
176 | break; | |
177 | } | |
178 | udelay(1); | |
179 | } | |
180 | ||
181 | ||
182 | if (2 != success) { | |
183 | dev_warn(&icd->dev, "soft reset time out\n"); | |
184 | return -EIO; | |
185 | } | |
186 | ||
187 | return 0; | |
188 | } | |
189 | ||
0d3244d6 MD |
190 | /* |
191 | * Videobuf operations | |
192 | */ | |
193 | static int sh_mobile_ceu_videobuf_setup(struct videobuf_queue *vq, | |
194 | unsigned int *count, | |
195 | unsigned int *size) | |
196 | { | |
197 | struct soc_camera_device *icd = vq->priv_data; | |
198 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); | |
199 | struct sh_mobile_ceu_dev *pcdev = ici->priv; | |
200 | int bytes_per_pixel = (icd->current_fmt->depth + 7) >> 3; | |
201 | ||
6a6c8786 | 202 | *size = PAGE_ALIGN(icd->user_width * icd->user_height * |
a0705b07 | 203 | bytes_per_pixel); |
0d3244d6 MD |
204 | |
205 | if (0 == *count) | |
206 | *count = 2; | |
207 | ||
208 | if (pcdev->video_limit) { | |
209 | while (*size * *count > pcdev->video_limit) | |
210 | (*count)--; | |
211 | } | |
212 | ||
0166b743 | 213 | dev_dbg(icd->dev.parent, "count=%d, size=%d\n", *count, *size); |
0d3244d6 MD |
214 | |
215 | return 0; | |
216 | } | |
217 | ||
218 | static void free_buffer(struct videobuf_queue *vq, | |
219 | struct sh_mobile_ceu_buffer *buf) | |
220 | { | |
221 | struct soc_camera_device *icd = vq->priv_data; | |
6a6c8786 | 222 | struct device *dev = icd->dev.parent; |
0d3244d6 | 223 | |
6a6c8786 | 224 | dev_dbg(dev, "%s (vb=0x%p) 0x%08lx %zd\n", __func__, |
0d3244d6 MD |
225 | &buf->vb, buf->vb.baddr, buf->vb.bsize); |
226 | ||
227 | if (in_interrupt()) | |
228 | BUG(); | |
229 | ||
97215cbd | 230 | videobuf_waiton(&buf->vb, 0, 0); |
0d3244d6 | 231 | videobuf_dma_contig_free(vq, &buf->vb); |
6a6c8786 | 232 | dev_dbg(dev, "%s freed\n", __func__); |
0d3244d6 MD |
233 | buf->vb.state = VIDEOBUF_NEEDS_INIT; |
234 | } | |
235 | ||
7a1a8164 MD |
236 | #define CEU_CETCR_MAGIC 0x0317f313 /* acknowledge magical interrupt sources */ |
237 | #define CEU_CETCR_IGRW (1 << 4) /* prohibited register access interrupt bit */ | |
238 | #define CEU_CEIER_CPEIE (1 << 0) /* one-frame capture end interrupt */ | |
5cf93f1d | 239 | #define CEU_CEIER_VBP (1 << 20) /* vbp error */ |
7a1a8164 | 240 | #define CEU_CAPCR_CTNCP (1 << 16) /* continuous capture mode (if set) */ |
5cf93f1d | 241 | #define CEU_CEIER_MASK (CEU_CEIER_CPEIE | CEU_CEIER_VBP) |
7a1a8164 MD |
242 | |
243 | ||
5cf93f1d KM |
244 | /* |
245 | * return value doesn't reflex the success/failure to queue the new buffer, | |
246 | * but rather the status of the previous buffer. | |
247 | */ | |
248 | static int sh_mobile_ceu_capture(struct sh_mobile_ceu_dev *pcdev) | |
0d3244d6 | 249 | { |
8be65dc5 | 250 | struct soc_camera_device *icd = pcdev->icd; |
ccab8a29 | 251 | dma_addr_t phys_addr_top, phys_addr_bottom; |
5cf93f1d KM |
252 | u32 status; |
253 | int ret = 0; | |
7a1a8164 | 254 | |
5d28d525 GL |
255 | /* |
256 | * The hardware is _very_ picky about this sequence. Especially | |
7a1a8164 MD |
257 | * the CEU_CETCR_MAGIC value. It seems like we need to acknowledge |
258 | * several not-so-well documented interrupt sources in CETCR. | |
259 | */ | |
5cf93f1d KM |
260 | ceu_write(pcdev, CEIER, ceu_read(pcdev, CEIER) & ~CEU_CEIER_MASK); |
261 | status = ceu_read(pcdev, CETCR); | |
262 | ceu_write(pcdev, CETCR, ~status & CEU_CETCR_MAGIC); | |
263 | ceu_write(pcdev, CEIER, ceu_read(pcdev, CEIER) | CEU_CEIER_MASK); | |
7a1a8164 MD |
264 | ceu_write(pcdev, CAPCR, ceu_read(pcdev, CAPCR) & ~CEU_CAPCR_CTNCP); |
265 | ceu_write(pcdev, CETCR, CEU_CETCR_MAGIC ^ CEU_CETCR_IGRW); | |
0d3244d6 | 266 | |
5cf93f1d KM |
267 | /* |
268 | * When a VBP interrupt occurs, a capture end interrupt does not occur | |
269 | * and the image of that frame is not captured correctly. So, soft reset | |
270 | * is needed here. | |
271 | */ | |
272 | if (status & CEU_CEIER_VBP) { | |
273 | sh_mobile_ceu_soft_reset(pcdev); | |
274 | ret = -EIO; | |
275 | } | |
276 | ||
8be65dc5 | 277 | if (!pcdev->active) |
5cf93f1d | 278 | return ret; |
8be65dc5 | 279 | |
ccab8a29 KM |
280 | phys_addr_top = videobuf_to_dma_contig(pcdev->active); |
281 | ceu_write(pcdev, CDAYR, phys_addr_top); | |
e802967c | 282 | if (pcdev->is_interlaced) { |
6a6c8786 | 283 | phys_addr_bottom = phys_addr_top + icd->user_width; |
ccab8a29 KM |
284 | ceu_write(pcdev, CDBYR, phys_addr_bottom); |
285 | } | |
8be65dc5 MD |
286 | |
287 | switch (icd->current_fmt->fourcc) { | |
288 | case V4L2_PIX_FMT_NV12: | |
289 | case V4L2_PIX_FMT_NV21: | |
9e4a56d2 MD |
290 | case V4L2_PIX_FMT_NV16: |
291 | case V4L2_PIX_FMT_NV61: | |
6a6c8786 GL |
292 | phys_addr_top += icd->user_width * |
293 | icd->user_height; | |
ccab8a29 | 294 | ceu_write(pcdev, CDACR, phys_addr_top); |
e802967c | 295 | if (pcdev->is_interlaced) { |
a0705b07 | 296 | phys_addr_bottom = phys_addr_top + |
6a6c8786 | 297 | icd->user_width; |
ccab8a29 KM |
298 | ceu_write(pcdev, CDBCR, phys_addr_bottom); |
299 | } | |
0d3244d6 | 300 | } |
8be65dc5 MD |
301 | |
302 | pcdev->active->state = VIDEOBUF_ACTIVE; | |
303 | ceu_write(pcdev, CAPSR, 0x1); /* start capture */ | |
5cf93f1d KM |
304 | |
305 | return ret; | |
0d3244d6 MD |
306 | } |
307 | ||
308 | static int sh_mobile_ceu_videobuf_prepare(struct videobuf_queue *vq, | |
309 | struct videobuf_buffer *vb, | |
310 | enum v4l2_field field) | |
311 | { | |
312 | struct soc_camera_device *icd = vq->priv_data; | |
313 | struct sh_mobile_ceu_buffer *buf; | |
314 | int ret; | |
315 | ||
316 | buf = container_of(vb, struct sh_mobile_ceu_buffer, vb); | |
317 | ||
0166b743 | 318 | dev_dbg(icd->dev.parent, "%s (vb=0x%p) 0x%08lx %zd\n", __func__, |
0d3244d6 MD |
319 | vb, vb->baddr, vb->bsize); |
320 | ||
321 | /* Added list head initialization on alloc */ | |
322 | WARN_ON(!list_empty(&vb->queue)); | |
323 | ||
324 | #ifdef DEBUG | |
5d28d525 GL |
325 | /* |
326 | * This can be useful if you want to see if we actually fill | |
327 | * the buffer with something | |
328 | */ | |
0d3244d6 MD |
329 | memset((void *)vb->baddr, 0xaa, vb->bsize); |
330 | #endif | |
331 | ||
332 | BUG_ON(NULL == icd->current_fmt); | |
333 | ||
334 | if (buf->fmt != icd->current_fmt || | |
6a6c8786 GL |
335 | vb->width != icd->user_width || |
336 | vb->height != icd->user_height || | |
0d3244d6 MD |
337 | vb->field != field) { |
338 | buf->fmt = icd->current_fmt; | |
6a6c8786 GL |
339 | vb->width = icd->user_width; |
340 | vb->height = icd->user_height; | |
0d3244d6 MD |
341 | vb->field = field; |
342 | vb->state = VIDEOBUF_NEEDS_INIT; | |
343 | } | |
344 | ||
345 | vb->size = vb->width * vb->height * ((buf->fmt->depth + 7) >> 3); | |
346 | if (0 != vb->baddr && vb->bsize < vb->size) { | |
347 | ret = -EINVAL; | |
348 | goto out; | |
349 | } | |
350 | ||
351 | if (vb->state == VIDEOBUF_NEEDS_INIT) { | |
352 | ret = videobuf_iolock(vq, vb, NULL); | |
353 | if (ret) | |
354 | goto fail; | |
355 | vb->state = VIDEOBUF_PREPARED; | |
356 | } | |
357 | ||
358 | return 0; | |
359 | fail: | |
360 | free_buffer(vq, buf); | |
361 | out: | |
362 | return ret; | |
363 | } | |
364 | ||
2dd54a54 | 365 | /* Called under spinlock_irqsave(&pcdev->lock, ...) */ |
0d3244d6 MD |
366 | static void sh_mobile_ceu_videobuf_queue(struct videobuf_queue *vq, |
367 | struct videobuf_buffer *vb) | |
368 | { | |
369 | struct soc_camera_device *icd = vq->priv_data; | |
370 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); | |
371 | struct sh_mobile_ceu_dev *pcdev = ici->priv; | |
0d3244d6 | 372 | |
0166b743 | 373 | dev_dbg(icd->dev.parent, "%s (vb=0x%p) 0x%08lx %zd\n", __func__, |
0d3244d6 MD |
374 | vb, vb->baddr, vb->bsize); |
375 | ||
51354cc3 | 376 | vb->state = VIDEOBUF_QUEUED; |
0d3244d6 MD |
377 | list_add_tail(&vb->queue, &pcdev->capture); |
378 | ||
379 | if (!pcdev->active) { | |
5cf93f1d KM |
380 | /* |
381 | * Because there were no active buffer at this moment, | |
382 | * we are not interested in the return value of | |
383 | * sh_mobile_ceu_capture here. | |
384 | */ | |
0d3244d6 MD |
385 | pcdev->active = vb; |
386 | sh_mobile_ceu_capture(pcdev); | |
387 | } | |
0d3244d6 MD |
388 | } |
389 | ||
390 | static void sh_mobile_ceu_videobuf_release(struct videobuf_queue *vq, | |
391 | struct videobuf_buffer *vb) | |
392 | { | |
cca0e549 GL |
393 | struct soc_camera_device *icd = vq->priv_data; |
394 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); | |
395 | struct sh_mobile_ceu_dev *pcdev = ici->priv; | |
396 | unsigned long flags; | |
397 | ||
398 | spin_lock_irqsave(&pcdev->lock, flags); | |
399 | ||
400 | if (pcdev->active == vb) { | |
401 | /* disable capture (release DMA buffer), reset */ | |
402 | ceu_write(pcdev, CAPSR, 1 << 16); | |
403 | pcdev->active = NULL; | |
404 | } | |
405 | ||
406 | if ((vb->state == VIDEOBUF_ACTIVE || vb->state == VIDEOBUF_QUEUED) && | |
407 | !list_empty(&vb->queue)) { | |
408 | vb->state = VIDEOBUF_ERROR; | |
409 | list_del_init(&vb->queue); | |
410 | } | |
411 | ||
412 | spin_unlock_irqrestore(&pcdev->lock, flags); | |
413 | ||
0d3244d6 MD |
414 | free_buffer(vq, container_of(vb, struct sh_mobile_ceu_buffer, vb)); |
415 | } | |
416 | ||
417 | static struct videobuf_queue_ops sh_mobile_ceu_videobuf_ops = { | |
418 | .buf_setup = sh_mobile_ceu_videobuf_setup, | |
419 | .buf_prepare = sh_mobile_ceu_videobuf_prepare, | |
420 | .buf_queue = sh_mobile_ceu_videobuf_queue, | |
421 | .buf_release = sh_mobile_ceu_videobuf_release, | |
422 | }; | |
423 | ||
424 | static irqreturn_t sh_mobile_ceu_irq(int irq, void *data) | |
425 | { | |
426 | struct sh_mobile_ceu_dev *pcdev = data; | |
427 | struct videobuf_buffer *vb; | |
428 | unsigned long flags; | |
429 | ||
430 | spin_lock_irqsave(&pcdev->lock, flags); | |
431 | ||
432 | vb = pcdev->active; | |
cca0e549 GL |
433 | if (!vb) |
434 | /* Stale interrupt from a released buffer */ | |
435 | goto out; | |
436 | ||
0d3244d6 MD |
437 | list_del_init(&vb->queue); |
438 | ||
439 | if (!list_empty(&pcdev->capture)) | |
440 | pcdev->active = list_entry(pcdev->capture.next, | |
441 | struct videobuf_buffer, queue); | |
442 | else | |
443 | pcdev->active = NULL; | |
444 | ||
5cf93f1d KM |
445 | vb->state = (sh_mobile_ceu_capture(pcdev) < 0) ? |
446 | VIDEOBUF_ERROR : VIDEOBUF_DONE; | |
0d3244d6 MD |
447 | do_gettimeofday(&vb->ts); |
448 | vb->field_count++; | |
449 | wake_up(&vb->done); | |
cca0e549 GL |
450 | |
451 | out: | |
0d3244d6 MD |
452 | spin_unlock_irqrestore(&pcdev->lock, flags); |
453 | ||
454 | return IRQ_HANDLED; | |
455 | } | |
456 | ||
1c3bb743 | 457 | /* Called with .video_lock held */ |
0d3244d6 MD |
458 | static int sh_mobile_ceu_add_device(struct soc_camera_device *icd) |
459 | { | |
460 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); | |
461 | struct sh_mobile_ceu_dev *pcdev = ici->priv; | |
6ed7c038 | 462 | int ret; |
0d3244d6 | 463 | |
0d3244d6 | 464 | if (pcdev->icd) |
979ea1dd | 465 | return -EBUSY; |
0d3244d6 | 466 | |
0166b743 | 467 | dev_info(icd->dev.parent, |
0d3244d6 MD |
468 | "SuperH Mobile CEU driver attached to camera %d\n", |
469 | icd->devnum); | |
470 | ||
a79aebfc | 471 | pm_runtime_get_sync(ici->v4l2_dev.dev); |
40e2e092 | 472 | |
6ed7c038 GL |
473 | ret = sh_mobile_ceu_soft_reset(pcdev); |
474 | if (!ret) | |
475 | pcdev->icd = icd; | |
979ea1dd | 476 | |
6ed7c038 | 477 | return ret; |
0d3244d6 MD |
478 | } |
479 | ||
1c3bb743 | 480 | /* Called with .video_lock held */ |
0d3244d6 MD |
481 | static void sh_mobile_ceu_remove_device(struct soc_camera_device *icd) |
482 | { | |
483 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); | |
484 | struct sh_mobile_ceu_dev *pcdev = ici->priv; | |
51354cc3 | 485 | unsigned long flags; |
0d3244d6 MD |
486 | |
487 | BUG_ON(icd != pcdev->icd); | |
488 | ||
489 | /* disable capture, disable interrupts */ | |
490 | ceu_write(pcdev, CEIER, 0); | |
b1de7aeb | 491 | sh_mobile_ceu_soft_reset(pcdev); |
51354cc3 MD |
492 | |
493 | /* make sure active buffer is canceled */ | |
494 | spin_lock_irqsave(&pcdev->lock, flags); | |
495 | if (pcdev->active) { | |
496 | list_del(&pcdev->active->queue); | |
497 | pcdev->active->state = VIDEOBUF_ERROR; | |
498 | wake_up_all(&pcdev->active->done); | |
499 | pcdev->active = NULL; | |
500 | } | |
501 | spin_unlock_irqrestore(&pcdev->lock, flags); | |
502 | ||
a79aebfc | 503 | pm_runtime_put_sync(ici->v4l2_dev.dev); |
40e2e092 | 504 | |
0166b743 | 505 | dev_info(icd->dev.parent, |
0d3244d6 MD |
506 | "SuperH Mobile CEU driver detached from camera %d\n", |
507 | icd->devnum); | |
508 | ||
509 | pcdev->icd = NULL; | |
510 | } | |
511 | ||
961801bb GL |
512 | /* |
513 | * See chapter 29.4.12 "Capture Filter Control Register (CFLCR)" | |
514 | * in SH7722 Hardware Manual | |
515 | */ | |
516 | static unsigned int size_dst(unsigned int src, unsigned int scale) | |
517 | { | |
518 | unsigned int mant_pre = scale >> 12; | |
519 | if (!src || !scale) | |
520 | return src; | |
521 | return ((mant_pre + 2 * (src - 1)) / (2 * mant_pre) - 1) * | |
522 | mant_pre * 4096 / scale + 1; | |
523 | } | |
524 | ||
961801bb GL |
525 | static u16 calc_scale(unsigned int src, unsigned int *dst) |
526 | { | |
527 | u16 scale; | |
528 | ||
529 | if (src == *dst) | |
530 | return 0; | |
531 | ||
532 | scale = (src * 4096 / *dst) & ~7; | |
533 | ||
534 | while (scale > 4096 && size_dst(src, scale) < *dst) | |
535 | scale -= 8; | |
536 | ||
537 | *dst = size_dst(src, scale); | |
538 | ||
539 | return scale; | |
540 | } | |
541 | ||
542 | /* rect is guaranteed to not exceed the scaled camera rectangle */ | |
904078f1 | 543 | static void sh_mobile_ceu_set_rect(struct soc_camera_device *icd, |
6a6c8786 GL |
544 | unsigned int out_width, |
545 | unsigned int out_height) | |
904078f1 GL |
546 | { |
547 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); | |
548 | struct sh_mobile_ceu_cam *cam = icd->host_priv; | |
6a6c8786 | 549 | struct v4l2_rect *rect = &cam->ceu_rect; |
904078f1 | 550 | struct sh_mobile_ceu_dev *pcdev = ici->priv; |
6a6c8786 GL |
551 | unsigned int height, width, cdwdr_width, in_width, in_height; |
552 | unsigned int left_offset, top_offset; | |
904078f1 GL |
553 | u32 camor; |
554 | ||
6a6c8786 GL |
555 | dev_dbg(icd->dev.parent, "Crop %ux%u@%u:%u\n", |
556 | rect->width, rect->height, rect->left, rect->top); | |
904078f1 | 557 | |
6a6c8786 GL |
558 | left_offset = rect->left; |
559 | top_offset = rect->top; | |
904078f1 GL |
560 | |
561 | if (pcdev->image_mode) { | |
6a6c8786 | 562 | in_width = rect->width; |
961801bb | 563 | if (!pcdev->is_16bit) { |
961801bb GL |
564 | in_width *= 2; |
565 | left_offset *= 2; | |
566 | } | |
6a6c8786 | 567 | width = cdwdr_width = out_width; |
904078f1 | 568 | } else { |
961801bb | 569 | unsigned int w_factor = (icd->current_fmt->depth + 7) >> 3; |
6a6c8786 GL |
570 | |
571 | width = out_width * w_factor / 2; | |
572 | ||
961801bb GL |
573 | if (!pcdev->is_16bit) |
574 | w_factor *= 2; | |
575 | ||
6a6c8786 | 576 | in_width = rect->width * w_factor / 2; |
961801bb GL |
577 | left_offset = left_offset * w_factor / 2; |
578 | ||
6a6c8786 | 579 | cdwdr_width = width * 2; |
904078f1 GL |
580 | } |
581 | ||
6a6c8786 GL |
582 | height = out_height; |
583 | in_height = rect->height; | |
904078f1 GL |
584 | if (pcdev->is_interlaced) { |
585 | height /= 2; | |
961801bb GL |
586 | in_height /= 2; |
587 | top_offset /= 2; | |
904078f1 GL |
588 | cdwdr_width *= 2; |
589 | } | |
590 | ||
6a6c8786 | 591 | /* Set CAMOR, CAPWR, CFSZR, take care of CDWDR */ |
904078f1 | 592 | camor = left_offset | (top_offset << 16); |
6a6c8786 GL |
593 | |
594 | dev_geo(icd->dev.parent, | |
595 | "CAMOR 0x%x, CAPWR 0x%x, CFSZR 0x%x, CDWDR 0x%x\n", camor, | |
596 | (in_height << 16) | in_width, (height << 16) | width, | |
597 | cdwdr_width); | |
598 | ||
904078f1 | 599 | ceu_write(pcdev, CAMOR, camor); |
961801bb | 600 | ceu_write(pcdev, CAPWR, (in_height << 16) | in_width); |
6a6c8786 | 601 | ceu_write(pcdev, CFSZR, (height << 16) | width); |
904078f1 GL |
602 | ceu_write(pcdev, CDWDR, cdwdr_width); |
603 | } | |
604 | ||
605 | static u32 capture_save_reset(struct sh_mobile_ceu_dev *pcdev) | |
606 | { | |
607 | u32 capsr = ceu_read(pcdev, CAPSR); | |
608 | ceu_write(pcdev, CAPSR, 1 << 16); /* reset, stop capture */ | |
609 | return capsr; | |
610 | } | |
611 | ||
612 | static void capture_restore(struct sh_mobile_ceu_dev *pcdev, u32 capsr) | |
613 | { | |
614 | unsigned long timeout = jiffies + 10 * HZ; | |
615 | ||
616 | /* | |
617 | * Wait until the end of the current frame. It can take a long time, | |
618 | * but if it has been aborted by a CAPSR reset, it shoule exit sooner. | |
619 | */ | |
620 | while ((ceu_read(pcdev, CSTSR) & 1) && time_before(jiffies, timeout)) | |
621 | msleep(1); | |
622 | ||
623 | if (time_after(jiffies, timeout)) { | |
624 | dev_err(pcdev->ici.v4l2_dev.dev, | |
625 | "Timeout waiting for frame end! Interface problem?\n"); | |
626 | return; | |
627 | } | |
628 | ||
629 | /* Wait until reset clears, this shall not hang... */ | |
630 | while (ceu_read(pcdev, CAPSR) & (1 << 16)) | |
631 | udelay(10); | |
632 | ||
633 | /* Anything to restore? */ | |
634 | if (capsr & ~(1 << 16)) | |
635 | ceu_write(pcdev, CAPSR, capsr); | |
636 | } | |
637 | ||
0d3244d6 MD |
638 | static int sh_mobile_ceu_set_bus_param(struct soc_camera_device *icd, |
639 | __u32 pixfmt) | |
640 | { | |
641 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); | |
642 | struct sh_mobile_ceu_dev *pcdev = ici->priv; | |
904078f1 | 643 | int ret; |
0d3244d6 | 644 | unsigned long camera_flags, common_flags, value; |
904078f1 GL |
645 | int yuv_lineskip; |
646 | struct sh_mobile_ceu_cam *cam = icd->host_priv; | |
647 | u32 capsr = capture_save_reset(pcdev); | |
0d3244d6 MD |
648 | |
649 | camera_flags = icd->ops->query_bus_param(icd); | |
650 | common_flags = soc_camera_bus_param_compatible(camera_flags, | |
c354b400 | 651 | make_bus_param(pcdev)); |
0d3244d6 MD |
652 | if (!common_flags) |
653 | return -EINVAL; | |
654 | ||
655 | ret = icd->ops->set_bus_param(icd, common_flags); | |
656 | if (ret < 0) | |
657 | return ret; | |
658 | ||
659 | switch (common_flags & SOCAM_DATAWIDTH_MASK) { | |
660 | case SOCAM_DATAWIDTH_8: | |
904078f1 | 661 | pcdev->is_16bit = 0; |
0d3244d6 MD |
662 | break; |
663 | case SOCAM_DATAWIDTH_16: | |
904078f1 | 664 | pcdev->is_16bit = 1; |
0d3244d6 MD |
665 | break; |
666 | default: | |
667 | return -EINVAL; | |
668 | } | |
669 | ||
670 | ceu_write(pcdev, CRCNTR, 0); | |
671 | ceu_write(pcdev, CRCMPR, 0); | |
672 | ||
8be65dc5 | 673 | value = 0x00000010; /* data fetch by default */ |
961801bb | 674 | yuv_lineskip = 0; |
8be65dc5 MD |
675 | |
676 | switch (icd->current_fmt->fourcc) { | |
677 | case V4L2_PIX_FMT_NV12: | |
678 | case V4L2_PIX_FMT_NV21: | |
679 | yuv_lineskip = 1; /* skip for NV12/21, no skip for NV16/61 */ | |
9e4a56d2 MD |
680 | /* fall-through */ |
681 | case V4L2_PIX_FMT_NV16: | |
682 | case V4L2_PIX_FMT_NV61: | |
904078f1 | 683 | switch (cam->camera_fmt->fourcc) { |
8be65dc5 MD |
684 | case V4L2_PIX_FMT_UYVY: |
685 | value = 0x00000000; /* Cb0, Y0, Cr0, Y1 */ | |
686 | break; | |
687 | case V4L2_PIX_FMT_VYUY: | |
688 | value = 0x00000100; /* Cr0, Y0, Cb0, Y1 */ | |
689 | break; | |
690 | case V4L2_PIX_FMT_YUYV: | |
691 | value = 0x00000200; /* Y0, Cb0, Y1, Cr0 */ | |
692 | break; | |
693 | case V4L2_PIX_FMT_YVYU: | |
694 | value = 0x00000300; /* Y0, Cr0, Y1, Cb0 */ | |
695 | break; | |
696 | default: | |
697 | BUG(); | |
698 | } | |
699 | } | |
700 | ||
7a1a8164 MD |
701 | if (icd->current_fmt->fourcc == V4L2_PIX_FMT_NV21 || |
702 | icd->current_fmt->fourcc == V4L2_PIX_FMT_NV61) | |
9e4a56d2 | 703 | value ^= 0x00000100; /* swap U, V to change from NV1x->NVx1 */ |
8be65dc5 | 704 | |
7a1a8164 MD |
705 | value |= common_flags & SOCAM_VSYNC_ACTIVE_LOW ? 1 << 1 : 0; |
706 | value |= common_flags & SOCAM_HSYNC_ACTIVE_LOW ? 1 << 0 : 0; | |
904078f1 | 707 | value |= pcdev->is_16bit ? 1 << 12 : 0; |
0d3244d6 MD |
708 | ceu_write(pcdev, CAMCR, value); |
709 | ||
710 | ceu_write(pcdev, CAPCR, 0x00300000); | |
e802967c | 711 | ceu_write(pcdev, CAIFR, pcdev->is_interlaced ? 0x101 : 0); |
0d3244d6 | 712 | |
6a6c8786 | 713 | sh_mobile_ceu_set_rect(icd, icd->user_width, icd->user_height); |
0d3244d6 MD |
714 | mdelay(1); |
715 | ||
961801bb | 716 | ceu_write(pcdev, CFLCR, pcdev->cflcr); |
dd54203b | 717 | |
5d28d525 GL |
718 | /* |
719 | * A few words about byte order (observed in Big Endian mode) | |
dd54203b MD |
720 | * |
721 | * In data fetch mode bytes are received in chunks of 8 bytes. | |
722 | * D0, D1, D2, D3, D4, D5, D6, D7 (D0 received first) | |
723 | * | |
724 | * The data is however by default written to memory in reverse order: | |
725 | * D7, D6, D5, D4, D3, D2, D1, D0 (D7 written to lowest byte) | |
726 | * | |
727 | * The lowest three bits of CDOCR allows us to do swapping, | |
2c0a072e MD |
728 | * using 7 we swap the data bytes to match the incoming order: |
729 | * D0, D1, D2, D3, D4, D5, D6, D7 | |
dd54203b | 730 | */ |
8be65dc5 MD |
731 | value = 0x00000017; |
732 | if (yuv_lineskip) | |
733 | value &= ~0x00000010; /* convert 4:2:2 -> 4:2:0 */ | |
734 | ||
735 | ceu_write(pcdev, CDOCR, value); | |
0d3244d6 MD |
736 | ceu_write(pcdev, CFWCR, 0); /* keep "datafetch firewall" disabled */ |
737 | ||
6a6c8786 | 738 | dev_dbg(icd->dev.parent, "S_FMT successful for %c%c%c%c %ux%u\n", |
904078f1 GL |
739 | pixfmt & 0xff, (pixfmt >> 8) & 0xff, |
740 | (pixfmt >> 16) & 0xff, (pixfmt >> 24) & 0xff, | |
6a6c8786 | 741 | icd->user_width, icd->user_height); |
904078f1 GL |
742 | |
743 | capture_restore(pcdev, capsr); | |
744 | ||
0d3244d6 | 745 | /* not in bundle mode: skip CBDSR, CDAYR2, CDACR2, CDBYR2, CDBCR2 */ |
0d3244d6 MD |
746 | return 0; |
747 | } | |
748 | ||
9414de39 | 749 | static int sh_mobile_ceu_try_bus_param(struct soc_camera_device *icd) |
0d3244d6 MD |
750 | { |
751 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); | |
752 | struct sh_mobile_ceu_dev *pcdev = ici->priv; | |
753 | unsigned long camera_flags, common_flags; | |
754 | ||
755 | camera_flags = icd->ops->query_bus_param(icd); | |
756 | common_flags = soc_camera_bus_param_compatible(camera_flags, | |
c354b400 | 757 | make_bus_param(pcdev)); |
0d3244d6 MD |
758 | if (!common_flags) |
759 | return -EINVAL; | |
760 | ||
761 | return 0; | |
762 | } | |
763 | ||
8be65dc5 MD |
764 | static const struct soc_camera_data_format sh_mobile_ceu_formats[] = { |
765 | { | |
766 | .name = "NV12", | |
767 | .depth = 12, | |
768 | .fourcc = V4L2_PIX_FMT_NV12, | |
769 | .colorspace = V4L2_COLORSPACE_JPEG, | |
770 | }, | |
771 | { | |
772 | .name = "NV21", | |
773 | .depth = 12, | |
774 | .fourcc = V4L2_PIX_FMT_NV21, | |
775 | .colorspace = V4L2_COLORSPACE_JPEG, | |
776 | }, | |
9e4a56d2 MD |
777 | { |
778 | .name = "NV16", | |
779 | .depth = 16, | |
780 | .fourcc = V4L2_PIX_FMT_NV16, | |
781 | .colorspace = V4L2_COLORSPACE_JPEG, | |
782 | }, | |
783 | { | |
784 | .name = "NV61", | |
785 | .depth = 16, | |
786 | .fourcc = V4L2_PIX_FMT_NV61, | |
787 | .colorspace = V4L2_COLORSPACE_JPEG, | |
788 | }, | |
8be65dc5 MD |
789 | }; |
790 | ||
9414de39 MD |
791 | static int sh_mobile_ceu_get_formats(struct soc_camera_device *icd, int idx, |
792 | struct soc_camera_format_xlate *xlate) | |
793 | { | |
6a6c8786 | 794 | struct device *dev = icd->dev.parent; |
8be65dc5 | 795 | int ret, k, n; |
9414de39 | 796 | int formats = 0; |
904078f1 | 797 | struct sh_mobile_ceu_cam *cam; |
9414de39 MD |
798 | |
799 | ret = sh_mobile_ceu_try_bus_param(icd); | |
800 | if (ret < 0) | |
801 | return 0; | |
802 | ||
904078f1 GL |
803 | if (!icd->host_priv) { |
804 | cam = kzalloc(sizeof(*cam), GFP_KERNEL); | |
805 | if (!cam) | |
806 | return -ENOMEM; | |
807 | ||
808 | icd->host_priv = cam; | |
809 | } else { | |
810 | cam = icd->host_priv; | |
811 | } | |
812 | ||
c8329acc GL |
813 | /* Beginning of a pass */ |
814 | if (!idx) | |
904078f1 | 815 | cam->extra_fmt = NULL; |
c8329acc | 816 | |
9414de39 | 817 | switch (icd->formats[idx].fourcc) { |
8be65dc5 MD |
818 | case V4L2_PIX_FMT_UYVY: |
819 | case V4L2_PIX_FMT_VYUY: | |
820 | case V4L2_PIX_FMT_YUYV: | |
821 | case V4L2_PIX_FMT_YVYU: | |
904078f1 | 822 | if (cam->extra_fmt) |
c8329acc GL |
823 | goto add_single_format; |
824 | ||
825 | /* | |
826 | * Our case is simple so far: for any of the above four camera | |
827 | * formats we add all our four synthesized NV* formats, so, | |
828 | * just marking the device with a single flag suffices. If | |
829 | * the format generation rules are more complex, you would have | |
830 | * to actually hang your already added / counted formats onto | |
831 | * the host_priv pointer and check whether the format you're | |
832 | * going to add now is already there. | |
833 | */ | |
904078f1 | 834 | cam->extra_fmt = (void *)sh_mobile_ceu_formats; |
c8329acc | 835 | |
8be65dc5 MD |
836 | n = ARRAY_SIZE(sh_mobile_ceu_formats); |
837 | formats += n; | |
838 | for (k = 0; xlate && k < n; k++) { | |
839 | xlate->host_fmt = &sh_mobile_ceu_formats[k]; | |
840 | xlate->cam_fmt = icd->formats + idx; | |
841 | xlate->buswidth = icd->formats[idx].depth; | |
842 | xlate++; | |
6a6c8786 | 843 | dev_dbg(dev, "Providing format %s using %s\n", |
8be65dc5 MD |
844 | sh_mobile_ceu_formats[k].name, |
845 | icd->formats[idx].name); | |
846 | } | |
9414de39 | 847 | default: |
c8329acc | 848 | add_single_format: |
9414de39 MD |
849 | /* Generic pass-through */ |
850 | formats++; | |
851 | if (xlate) { | |
852 | xlate->host_fmt = icd->formats + idx; | |
853 | xlate->cam_fmt = icd->formats + idx; | |
854 | xlate->buswidth = icd->formats[idx].depth; | |
855 | xlate++; | |
6a6c8786 | 856 | dev_dbg(dev, |
9414de39 MD |
857 | "Providing format %s in pass-through mode\n", |
858 | icd->formats[idx].name); | |
859 | } | |
860 | } | |
861 | ||
862 | return formats; | |
863 | } | |
864 | ||
904078f1 GL |
865 | static void sh_mobile_ceu_put_formats(struct soc_camera_device *icd) |
866 | { | |
867 | kfree(icd->host_priv); | |
868 | icd->host_priv = NULL; | |
869 | } | |
870 | ||
961801bb | 871 | /* Check if any dimension of r1 is smaller than respective one of r2 */ |
904078f1 GL |
872 | static bool is_smaller(struct v4l2_rect *r1, struct v4l2_rect *r2) |
873 | { | |
874 | return r1->width < r2->width || r1->height < r2->height; | |
875 | } | |
876 | ||
961801bb GL |
877 | /* Check if r1 fails to cover r2 */ |
878 | static bool is_inside(struct v4l2_rect *r1, struct v4l2_rect *r2) | |
879 | { | |
880 | return r1->left > r2->left || r1->top > r2->top || | |
881 | r1->left + r1->width < r2->left + r2->width || | |
882 | r1->top + r1->height < r2->top + r2->height; | |
883 | } | |
884 | ||
6a6c8786 GL |
885 | static unsigned int scale_down(unsigned int size, unsigned int scale) |
886 | { | |
887 | return (size * 4096 + scale / 2) / scale; | |
888 | } | |
889 | ||
890 | static unsigned int scale_up(unsigned int size, unsigned int scale) | |
891 | { | |
892 | return (size * scale + 2048) / 4096; | |
893 | } | |
894 | ||
895 | static unsigned int calc_generic_scale(unsigned int input, unsigned int output) | |
896 | { | |
897 | return (input * 4096 + output / 2) / output; | |
898 | } | |
899 | ||
900 | static int client_g_rect(struct v4l2_subdev *sd, struct v4l2_rect *rect) | |
901 | { | |
902 | struct v4l2_crop crop; | |
903 | struct v4l2_cropcap cap; | |
904 | int ret; | |
905 | ||
906 | crop.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; | |
907 | ||
908 | ret = v4l2_subdev_call(sd, video, g_crop, &crop); | |
909 | if (!ret) { | |
910 | *rect = crop.c; | |
911 | return ret; | |
912 | } | |
913 | ||
914 | /* Camera driver doesn't support .g_crop(), assume default rectangle */ | |
915 | cap.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; | |
916 | ||
917 | ret = v4l2_subdev_call(sd, video, cropcap, &cap); | |
918 | if (ret < 0) | |
919 | return ret; | |
920 | ||
921 | *rect = cap.defrect; | |
922 | ||
923 | return ret; | |
924 | } | |
925 | ||
961801bb | 926 | /* |
6a6c8786 | 927 | * The common for both scaling and cropping iterative approach is: |
961801bb GL |
928 | * 1. try if the client can produce exactly what requested by the user |
929 | * 2. if (1) failed, try to double the client image until we get one big enough | |
930 | * 3. if (2) failed, try to request the maximum image | |
931 | */ | |
6a6c8786 GL |
932 | static int client_s_crop(struct v4l2_subdev *sd, struct v4l2_crop *crop, |
933 | struct v4l2_crop *cam_crop) | |
09e231b3 | 934 | { |
6a6c8786 GL |
935 | struct v4l2_rect *rect = &crop->c, *cam_rect = &cam_crop->c; |
936 | struct device *dev = sd->v4l2_dev->dev; | |
937 | struct v4l2_cropcap cap; | |
904078f1 | 938 | int ret; |
6a6c8786 | 939 | unsigned int width, height; |
904078f1 | 940 | |
6a6c8786 GL |
941 | v4l2_subdev_call(sd, video, s_crop, crop); |
942 | ret = client_g_rect(sd, cam_rect); | |
943 | if (ret < 0) | |
944 | return ret; | |
961801bb | 945 | |
6a6c8786 GL |
946 | /* |
947 | * Now cam_crop contains the current camera input rectangle, and it must | |
948 | * be within camera cropcap bounds | |
949 | */ | |
950 | if (!memcmp(rect, cam_rect, sizeof(*rect))) { | |
951 | /* Even if camera S_CROP failed, but camera rectangle matches */ | |
952 | dev_dbg(dev, "Camera S_CROP successful for %ux%u@%u:%u\n", | |
953 | rect->width, rect->height, rect->left, rect->top); | |
954 | return 0; | |
904078f1 GL |
955 | } |
956 | ||
6a6c8786 GL |
957 | /* Try to fix cropping, that camera hasn't managed to set */ |
958 | dev_geo(dev, "Fix camera S_CROP for %ux%u@%u:%u to %ux%u@%u:%u\n", | |
959 | cam_rect->width, cam_rect->height, | |
08590b96 | 960 | cam_rect->left, cam_rect->top, |
6a6c8786 GL |
961 | rect->width, rect->height, rect->left, rect->top); |
962 | ||
963 | /* We need sensor maximum rectangle */ | |
964 | ret = v4l2_subdev_call(sd, video, cropcap, &cap); | |
965 | if (ret < 0) | |
966 | return ret; | |
967 | ||
968 | soc_camera_limit_side(&rect->left, &rect->width, cap.bounds.left, 2, | |
969 | cap.bounds.width); | |
970 | soc_camera_limit_side(&rect->top, &rect->height, cap.bounds.top, 4, | |
971 | cap.bounds.height); | |
904078f1 GL |
972 | |
973 | /* | |
974 | * Popular special case - some cameras can only handle fixed sizes like | |
975 | * QVGA, VGA,... Take care to avoid infinite loop. | |
976 | */ | |
6a6c8786 GL |
977 | width = max(cam_rect->width, 2); |
978 | height = max(cam_rect->height, 2); | |
979 | ||
980 | while (!ret && (is_smaller(cam_rect, rect) || | |
981 | is_inside(cam_rect, rect)) && | |
982 | (cap.bounds.width > width || cap.bounds.height > height)) { | |
961801bb GL |
983 | |
984 | width *= 2; | |
985 | height *= 2; | |
6a6c8786 | 986 | |
08590b96 GL |
987 | cam_rect->width = width; |
988 | cam_rect->height = height; | |
904078f1 | 989 | |
6a6c8786 GL |
990 | /* |
991 | * We do not know what capabilities the camera has to set up | |
992 | * left and top borders. We could try to be smarter in iterating | |
993 | * them, e.g., if camera current left is to the right of the | |
994 | * target left, set it to the middle point between the current | |
995 | * left and minimum left. But that would add too much | |
996 | * complexity: we would have to iterate each border separately. | |
997 | */ | |
998 | if (cam_rect->left > rect->left) | |
999 | cam_rect->left = cap.bounds.left; | |
961801bb | 1000 | |
6a6c8786 GL |
1001 | if (cam_rect->left + cam_rect->width < rect->left + rect->width) |
1002 | cam_rect->width = rect->left + rect->width - | |
08590b96 | 1003 | cam_rect->left; |
961801bb | 1004 | |
6a6c8786 GL |
1005 | if (cam_rect->top > rect->top) |
1006 | cam_rect->top = cap.bounds.top; | |
961801bb | 1007 | |
6a6c8786 GL |
1008 | if (cam_rect->top + cam_rect->height < rect->top + rect->height) |
1009 | cam_rect->height = rect->top + rect->height - | |
08590b96 | 1010 | cam_rect->top; |
961801bb | 1011 | |
6a6c8786 GL |
1012 | v4l2_subdev_call(sd, video, s_crop, cam_crop); |
1013 | ret = client_g_rect(sd, cam_rect); | |
1014 | dev_geo(dev, "Camera S_CROP %d for %ux%u@%u:%u\n", ret, | |
1015 | cam_rect->width, cam_rect->height, | |
08590b96 | 1016 | cam_rect->left, cam_rect->top); |
904078f1 GL |
1017 | } |
1018 | ||
6a6c8786 GL |
1019 | /* S_CROP must not modify the rectangle */ |
1020 | if (is_smaller(cam_rect, rect) || is_inside(cam_rect, rect)) { | |
904078f1 GL |
1021 | /* |
1022 | * The camera failed to configure a suitable cropping, | |
1023 | * we cannot use the current rectangle, set to max | |
1024 | */ | |
6a6c8786 GL |
1025 | *cam_rect = cap.bounds; |
1026 | v4l2_subdev_call(sd, video, s_crop, cam_crop); | |
1027 | ret = client_g_rect(sd, cam_rect); | |
1028 | dev_geo(dev, "Camera S_CROP %d for max %ux%u@%u:%u\n", ret, | |
1029 | cam_rect->width, cam_rect->height, | |
08590b96 | 1030 | cam_rect->left, cam_rect->top); |
904078f1 GL |
1031 | } |
1032 | ||
6a6c8786 GL |
1033 | return ret; |
1034 | } | |
1035 | ||
1036 | static int get_camera_scales(struct v4l2_subdev *sd, struct v4l2_rect *rect, | |
1037 | unsigned int *scale_h, unsigned int *scale_v) | |
1038 | { | |
1039 | struct v4l2_format f; | |
1040 | int ret; | |
1041 | ||
1042 | f.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; | |
1043 | ||
1044 | ret = v4l2_subdev_call(sd, video, g_fmt, &f); | |
1045 | if (ret < 0) | |
1046 | return ret; | |
1047 | ||
1048 | *scale_h = calc_generic_scale(rect->width, f.fmt.pix.width); | |
1049 | *scale_v = calc_generic_scale(rect->height, f.fmt.pix.height); | |
1050 | ||
1051 | return 0; | |
1052 | } | |
1053 | ||
1054 | static int get_camera_subwin(struct soc_camera_device *icd, | |
1055 | struct v4l2_rect *cam_subrect, | |
1056 | unsigned int cam_hscale, unsigned int cam_vscale) | |
1057 | { | |
1058 | struct sh_mobile_ceu_cam *cam = icd->host_priv; | |
1059 | struct v4l2_rect *ceu_rect = &cam->ceu_rect; | |
1060 | ||
1061 | if (!ceu_rect->width) { | |
1062 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); | |
1063 | struct device *dev = icd->dev.parent; | |
1064 | struct v4l2_format f; | |
1065 | struct v4l2_pix_format *pix = &f.fmt.pix; | |
1066 | int ret; | |
1067 | /* First time */ | |
1068 | ||
1069 | f.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; | |
1070 | ||
1071 | ret = v4l2_subdev_call(sd, video, g_fmt, &f); | |
1072 | if (ret < 0) | |
1073 | return ret; | |
1074 | ||
1075 | dev_geo(dev, "camera fmt %ux%u\n", pix->width, pix->height); | |
1076 | ||
1077 | if (pix->width > 2560) { | |
1078 | ceu_rect->width = 2560; | |
1079 | ceu_rect->left = (pix->width - 2560) / 2; | |
1080 | } else { | |
1081 | ceu_rect->width = pix->width; | |
1082 | ceu_rect->left = 0; | |
1083 | } | |
1084 | ||
1085 | if (pix->height > 1920) { | |
1086 | ceu_rect->height = 1920; | |
1087 | ceu_rect->top = (pix->height - 1920) / 2; | |
1088 | } else { | |
1089 | ceu_rect->height = pix->height; | |
1090 | ceu_rect->top = 0; | |
1091 | } | |
1092 | ||
1093 | dev_geo(dev, "initialised CEU rect %ux%u@%u:%u\n", | |
1094 | ceu_rect->width, ceu_rect->height, | |
1095 | ceu_rect->left, ceu_rect->top); | |
1096 | } | |
1097 | ||
1098 | cam_subrect->width = scale_up(ceu_rect->width, cam_hscale); | |
1099 | cam_subrect->left = scale_up(ceu_rect->left, cam_hscale); | |
1100 | cam_subrect->height = scale_up(ceu_rect->height, cam_vscale); | |
1101 | cam_subrect->top = scale_up(ceu_rect->top, cam_vscale); | |
1102 | ||
1103 | return 0; | |
1104 | } | |
1105 | ||
1106 | static int client_s_fmt(struct soc_camera_device *icd, struct v4l2_format *f, | |
1107 | bool ceu_can_scale) | |
1108 | { | |
1109 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); | |
1110 | struct device *dev = icd->dev.parent; | |
1111 | struct v4l2_pix_format *pix = &f->fmt.pix; | |
1112 | unsigned int width = pix->width, height = pix->height, tmp_w, tmp_h; | |
1113 | unsigned int max_width, max_height; | |
1114 | struct v4l2_cropcap cap; | |
1115 | int ret; | |
1116 | ||
1117 | cap.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; | |
1118 | ||
1119 | ret = v4l2_subdev_call(sd, video, cropcap, &cap); | |
1120 | if (ret < 0) | |
1121 | return ret; | |
1122 | ||
1123 | max_width = min(cap.bounds.width, 2560); | |
1124 | max_height = min(cap.bounds.height, 1920); | |
1125 | ||
1126 | ret = v4l2_subdev_call(sd, video, s_fmt, f); | |
1127 | if (ret < 0) | |
1128 | return ret; | |
1129 | ||
1130 | dev_geo(dev, "camera scaled to %ux%u\n", pix->width, pix->height); | |
1131 | ||
1132 | if ((width == pix->width && height == pix->height) || !ceu_can_scale) | |
1133 | return 0; | |
1134 | ||
1135 | /* Camera set a format, but geometry is not precise, try to improve */ | |
1136 | tmp_w = pix->width; | |
1137 | tmp_h = pix->height; | |
1138 | ||
1139 | /* width <= max_width && height <= max_height - guaranteed by try_fmt */ | |
1140 | while ((width > tmp_w || height > tmp_h) && | |
1141 | tmp_w < max_width && tmp_h < max_height) { | |
1142 | tmp_w = min(2 * tmp_w, max_width); | |
1143 | tmp_h = min(2 * tmp_h, max_height); | |
1144 | pix->width = tmp_w; | |
1145 | pix->height = tmp_h; | |
1146 | ret = v4l2_subdev_call(sd, video, s_fmt, f); | |
1147 | dev_geo(dev, "Camera scaled to %ux%u\n", | |
1148 | pix->width, pix->height); | |
1149 | if (ret < 0) { | |
1150 | /* This shouldn't happen */ | |
1151 | dev_err(dev, "Client failed to set format: %d\n", ret); | |
1152 | return ret; | |
1153 | } | |
1154 | } | |
1155 | ||
1156 | return 0; | |
1157 | } | |
1158 | ||
1159 | /** | |
1160 | * @rect - camera cropped rectangle | |
1161 | * @sub_rect - CEU cropped rectangle, mapped back to camera input area | |
1162 | * @ceu_rect - on output calculated CEU crop rectangle | |
1163 | */ | |
1164 | static int client_scale(struct soc_camera_device *icd, struct v4l2_rect *rect, | |
1165 | struct v4l2_rect *sub_rect, struct v4l2_rect *ceu_rect, | |
1166 | struct v4l2_format *f, bool ceu_can_scale) | |
1167 | { | |
1168 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); | |
1169 | struct sh_mobile_ceu_cam *cam = icd->host_priv; | |
1170 | struct device *dev = icd->dev.parent; | |
1171 | struct v4l2_format f_tmp = *f; | |
1172 | struct v4l2_pix_format *pix_tmp = &f_tmp.fmt.pix; | |
1173 | unsigned int scale_h, scale_v; | |
1174 | int ret; | |
1175 | ||
1176 | /* 5. Apply iterative camera S_FMT for camera user window. */ | |
1177 | ret = client_s_fmt(icd, &f_tmp, ceu_can_scale); | |
1178 | if (ret < 0) | |
1179 | return ret; | |
1180 | ||
1181 | dev_geo(dev, "5: camera scaled to %ux%u\n", | |
1182 | pix_tmp->width, pix_tmp->height); | |
1183 | ||
1184 | /* 6. Retrieve camera output window (g_fmt) */ | |
1185 | ||
1186 | /* unneeded - it is already in "f_tmp" */ | |
1187 | ||
1188 | /* 7. Calculate new camera scales. */ | |
1189 | ret = get_camera_scales(sd, rect, &scale_h, &scale_v); | |
1190 | if (ret < 0) | |
1191 | return ret; | |
1192 | ||
1193 | dev_geo(dev, "7: camera scales %u:%u\n", scale_h, scale_v); | |
1194 | ||
1195 | cam->cam_width = pix_tmp->width; | |
1196 | cam->cam_height = pix_tmp->height; | |
1197 | f->fmt.pix.width = pix_tmp->width; | |
1198 | f->fmt.pix.height = pix_tmp->height; | |
904078f1 GL |
1199 | |
1200 | /* | |
6a6c8786 GL |
1201 | * 8. Calculate new CEU crop - apply camera scales to previously |
1202 | * calculated "effective" crop. | |
904078f1 | 1203 | */ |
6a6c8786 GL |
1204 | ceu_rect->left = scale_down(sub_rect->left, scale_h); |
1205 | ceu_rect->width = scale_down(sub_rect->width, scale_h); | |
1206 | ceu_rect->top = scale_down(sub_rect->top, scale_v); | |
1207 | ceu_rect->height = scale_down(sub_rect->height, scale_v); | |
1208 | ||
1209 | dev_geo(dev, "8: new CEU rect %ux%u@%u:%u\n", | |
1210 | ceu_rect->width, ceu_rect->height, | |
1211 | ceu_rect->left, ceu_rect->top); | |
1212 | ||
1213 | return 0; | |
1214 | } | |
1215 | ||
1216 | /* Get combined scales */ | |
1217 | static int get_scales(struct soc_camera_device *icd, | |
1218 | unsigned int *scale_h, unsigned int *scale_v) | |
1219 | { | |
1220 | struct sh_mobile_ceu_cam *cam = icd->host_priv; | |
1221 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); | |
1222 | struct v4l2_crop cam_crop; | |
1223 | unsigned int width_in, height_in; | |
1224 | int ret; | |
904078f1 | 1225 | |
6a6c8786 | 1226 | cam_crop.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; |
904078f1 | 1227 | |
6a6c8786 GL |
1228 | ret = client_g_rect(sd, &cam_crop.c); |
1229 | if (ret < 0) | |
1230 | return ret; | |
904078f1 | 1231 | |
6a6c8786 GL |
1232 | ret = get_camera_scales(sd, &cam_crop.c, scale_h, scale_v); |
1233 | if (ret < 0) | |
1234 | return ret; | |
961801bb | 1235 | |
6a6c8786 GL |
1236 | width_in = scale_up(cam->ceu_rect.width, *scale_h); |
1237 | height_in = scale_up(cam->ceu_rect.height, *scale_v); | |
961801bb | 1238 | |
8cf1fec8 GL |
1239 | *scale_h = calc_generic_scale(width_in, icd->user_width); |
1240 | *scale_v = calc_generic_scale(height_in, icd->user_height); | |
6a6c8786 GL |
1241 | |
1242 | return 0; | |
1243 | } | |
1244 | ||
1245 | /* | |
1246 | * CEU can scale and crop, but we don't want to waste bandwidth and kill the | |
1247 | * framerate by always requesting the maximum image from the client. See | |
1248 | * Documentation/video4linux/sh_mobile_camera_ceu.txt for a description of | |
1249 | * scaling and cropping algorithms and for the meaning of referenced here steps. | |
1250 | */ | |
1251 | static int sh_mobile_ceu_set_crop(struct soc_camera_device *icd, | |
1252 | struct v4l2_crop *a) | |
1253 | { | |
1254 | struct v4l2_rect *rect = &a->c; | |
1255 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); | |
1256 | struct sh_mobile_ceu_dev *pcdev = ici->priv; | |
1257 | struct v4l2_crop cam_crop; | |
1258 | struct sh_mobile_ceu_cam *cam = icd->host_priv; | |
1259 | struct v4l2_rect *cam_rect = &cam_crop.c, *ceu_rect = &cam->ceu_rect; | |
1260 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); | |
1261 | struct device *dev = icd->dev.parent; | |
1262 | struct v4l2_format f; | |
1263 | struct v4l2_pix_format *pix = &f.fmt.pix; | |
1264 | unsigned int scale_comb_h, scale_comb_v, scale_ceu_h, scale_ceu_v, | |
1265 | out_width, out_height; | |
1266 | u32 capsr, cflcr; | |
1267 | int ret; | |
1268 | ||
1269 | /* 1. Calculate current combined scales. */ | |
1270 | ret = get_scales(icd, &scale_comb_h, &scale_comb_v); | |
1271 | if (ret < 0) | |
1272 | return ret; | |
1273 | ||
1274 | dev_geo(dev, "1: combined scales %u:%u\n", scale_comb_h, scale_comb_v); | |
1275 | ||
1276 | /* 2. Apply iterative camera S_CROP for new input window. */ | |
1277 | ret = client_s_crop(sd, a, &cam_crop); | |
1278 | if (ret < 0) | |
1279 | return ret; | |
1280 | ||
1281 | dev_geo(dev, "2: camera cropped to %ux%u@%u:%u\n", | |
1282 | cam_rect->width, cam_rect->height, | |
1283 | cam_rect->left, cam_rect->top); | |
1284 | ||
1285 | /* On success cam_crop contains current camera crop */ | |
1286 | ||
1287 | /* | |
1288 | * 3. If old combined scales applied to new crop produce an impossible | |
1289 | * user window, adjust scales to produce nearest possible window. | |
1290 | */ | |
1291 | out_width = scale_down(rect->width, scale_comb_h); | |
1292 | out_height = scale_down(rect->height, scale_comb_v); | |
1293 | ||
1294 | if (out_width > 2560) | |
1295 | out_width = 2560; | |
1296 | else if (out_width < 2) | |
1297 | out_width = 2; | |
1298 | ||
1299 | if (out_height > 1920) | |
1300 | out_height = 1920; | |
1301 | else if (out_height < 4) | |
1302 | out_height = 4; | |
1303 | ||
1304 | dev_geo(dev, "3: Adjusted output %ux%u\n", out_width, out_height); | |
1305 | ||
1306 | /* 4. Use G_CROP to retrieve actual input window: already in cam_crop */ | |
1307 | ||
1308 | /* | |
1309 | * 5. Using actual input window and calculated combined scales calculate | |
1310 | * camera target output window. | |
1311 | */ | |
1312 | pix->width = scale_down(cam_rect->width, scale_comb_h); | |
1313 | pix->height = scale_down(cam_rect->height, scale_comb_v); | |
1314 | ||
1315 | dev_geo(dev, "5: camera target %ux%u\n", pix->width, pix->height); | |
1316 | ||
1317 | /* 6. - 9. */ | |
1318 | pix->pixelformat = cam->camera_fmt->fourcc; | |
1319 | pix->colorspace = cam->camera_fmt->colorspace; | |
1320 | ||
1321 | capsr = capture_save_reset(pcdev); | |
1322 | dev_dbg(dev, "CAPSR 0x%x, CFLCR 0x%x\n", capsr, pcdev->cflcr); | |
1323 | ||
1324 | /* Make relative to camera rectangle */ | |
1325 | rect->left -= cam_rect->left; | |
1326 | rect->top -= cam_rect->top; | |
1327 | ||
1328 | f.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; | |
1329 | ||
1330 | ret = client_scale(icd, cam_rect, rect, ceu_rect, &f, | |
1331 | pcdev->image_mode && !pcdev->is_interlaced); | |
1332 | ||
1333 | dev_geo(dev, "6-9: %d\n", ret); | |
1334 | ||
1335 | /* 10. Use CEU cropping to crop to the new window. */ | |
1336 | sh_mobile_ceu_set_rect(icd, out_width, out_height); | |
1337 | ||
1338 | dev_geo(dev, "10: CEU cropped to %ux%u@%u:%u\n", | |
1339 | ceu_rect->width, ceu_rect->height, | |
1340 | ceu_rect->left, ceu_rect->top); | |
1341 | ||
1342 | /* | |
1343 | * 11. Calculate CEU scales from camera scales from results of (10) and | |
1344 | * user window from (3) | |
1345 | */ | |
1346 | scale_ceu_h = calc_scale(ceu_rect->width, &out_width); | |
1347 | scale_ceu_v = calc_scale(ceu_rect->height, &out_height); | |
1348 | ||
1349 | dev_geo(dev, "11: CEU scales %u:%u\n", scale_ceu_h, scale_ceu_v); | |
1350 | ||
1351 | /* 12. Apply CEU scales. */ | |
1352 | cflcr = scale_ceu_h | (scale_ceu_v << 16); | |
1353 | if (cflcr != pcdev->cflcr) { | |
1354 | pcdev->cflcr = cflcr; | |
1355 | ceu_write(pcdev, CFLCR, cflcr); | |
1356 | } | |
1357 | ||
1358 | /* Restore capture */ | |
904078f1 GL |
1359 | if (pcdev->active) |
1360 | capsr |= 1; | |
904078f1 GL |
1361 | capture_restore(pcdev, capsr); |
1362 | ||
6a6c8786 GL |
1363 | icd->user_width = out_width; |
1364 | icd->user_height = out_height; | |
1365 | ||
904078f1 GL |
1366 | /* Even if only camera cropping succeeded */ |
1367 | return ret; | |
09e231b3 GL |
1368 | } |
1369 | ||
961801bb | 1370 | /* Similar to set_crop multistage iterative algorithm */ |
d8fac217 | 1371 | static int sh_mobile_ceu_set_fmt(struct soc_camera_device *icd, |
09e231b3 | 1372 | struct v4l2_format *f) |
0d3244d6 | 1373 | { |
9414de39 | 1374 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); |
961801bb | 1375 | struct sh_mobile_ceu_dev *pcdev = ici->priv; |
904078f1 GL |
1376 | struct sh_mobile_ceu_cam *cam = icd->host_priv; |
1377 | struct v4l2_pix_format *pix = &f->fmt.pix; | |
6a6c8786 GL |
1378 | struct v4l2_format cam_f = *f; |
1379 | struct v4l2_pix_format *cam_pix = &cam_f.fmt.pix; | |
c9c1f1c0 | 1380 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
6a6c8786 | 1381 | struct device *dev = icd->dev.parent; |
904078f1 | 1382 | __u32 pixfmt = pix->pixelformat; |
9414de39 | 1383 | const struct soc_camera_format_xlate *xlate; |
6a6c8786 GL |
1384 | struct v4l2_crop cam_crop; |
1385 | struct v4l2_rect *cam_rect = &cam_crop.c, cam_subrect, ceu_rect; | |
1386 | unsigned int scale_cam_h, scale_cam_v; | |
1387 | u16 scale_v, scale_h; | |
1388 | int ret; | |
1389 | bool is_interlaced, image_mode; | |
961801bb GL |
1390 | |
1391 | switch (pix->field) { | |
1392 | case V4L2_FIELD_INTERLACED: | |
6a6c8786 | 1393 | is_interlaced = true; |
961801bb GL |
1394 | break; |
1395 | case V4L2_FIELD_ANY: | |
1396 | default: | |
1397 | pix->field = V4L2_FIELD_NONE; | |
1398 | /* fall-through */ | |
1399 | case V4L2_FIELD_NONE: | |
6a6c8786 | 1400 | is_interlaced = false; |
961801bb GL |
1401 | break; |
1402 | } | |
25c4d74e | 1403 | |
9414de39 MD |
1404 | xlate = soc_camera_xlate_by_fourcc(icd, pixfmt); |
1405 | if (!xlate) { | |
6a6c8786 | 1406 | dev_warn(dev, "Format %x not found\n", pixfmt); |
9414de39 | 1407 | return -EINVAL; |
25c4d74e GL |
1408 | } |
1409 | ||
6a6c8786 GL |
1410 | /* 1. Calculate current camera scales. */ |
1411 | cam_crop.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; | |
1412 | ||
1413 | ret = client_g_rect(sd, cam_rect); | |
1414 | if (ret < 0) | |
1415 | return ret; | |
1416 | ||
1417 | ret = get_camera_scales(sd, cam_rect, &scale_cam_h, &scale_cam_v); | |
1418 | if (ret < 0) | |
1419 | return ret; | |
1420 | ||
1421 | dev_geo(dev, "1: camera scales %u:%u\n", scale_cam_h, scale_cam_v); | |
1422 | ||
1423 | /* | |
1424 | * 2. Calculate "effective" input crop (sensor subwindow) - CEU crop | |
1425 | * scaled back at current camera scales onto input window. | |
1426 | */ | |
1427 | ret = get_camera_subwin(icd, &cam_subrect, scale_cam_h, scale_cam_v); | |
961801bb GL |
1428 | if (ret < 0) |
1429 | return ret; | |
1430 | ||
6a6c8786 GL |
1431 | dev_geo(dev, "2: subwin %ux%u@%u:%u\n", |
1432 | cam_subrect.width, cam_subrect.height, | |
1433 | cam_subrect.left, cam_subrect.top); | |
1434 | ||
1435 | /* | |
1436 | * 3. Calculate new combined scales from "effective" input window to | |
1437 | * requested user window. | |
1438 | */ | |
1439 | scale_h = calc_generic_scale(cam_subrect.width, pix->width); | |
1440 | scale_v = calc_generic_scale(cam_subrect.height, pix->height); | |
1441 | ||
1442 | dev_geo(dev, "3: scales %u:%u\n", scale_h, scale_v); | |
1443 | ||
1444 | /* | |
1445 | * 4. Calculate camera output window by applying combined scales to real | |
1446 | * input window. | |
1447 | */ | |
1448 | cam_pix->width = scale_down(cam_rect->width, scale_h); | |
1449 | cam_pix->height = scale_down(cam_rect->height, scale_v); | |
1450 | cam_pix->pixelformat = xlate->cam_fmt->fourcc; | |
1451 | ||
961801bb GL |
1452 | switch (pixfmt) { |
1453 | case V4L2_PIX_FMT_NV12: | |
1454 | case V4L2_PIX_FMT_NV21: | |
1455 | case V4L2_PIX_FMT_NV16: | |
1456 | case V4L2_PIX_FMT_NV61: | |
6a6c8786 | 1457 | image_mode = true; |
961801bb GL |
1458 | break; |
1459 | default: | |
6a6c8786 | 1460 | image_mode = false; |
9414de39 | 1461 | } |
25c4d74e | 1462 | |
6a6c8786 GL |
1463 | dev_geo(dev, "4: camera output %ux%u\n", |
1464 | cam_pix->width, cam_pix->height); | |
961801bb | 1465 | |
6a6c8786 GL |
1466 | /* 5. - 9. */ |
1467 | ret = client_scale(icd, cam_rect, &cam_subrect, &ceu_rect, &cam_f, | |
1468 | image_mode && !is_interlaced); | |
1469 | ||
1470 | dev_geo(dev, "5-9: client scale %d\n", ret); | |
1471 | ||
1472 | /* Done with the camera. Now see if we can improve the result */ | |
1473 | ||
1474 | dev_dbg(dev, "Camera %d fmt %ux%u, requested %ux%u\n", | |
1475 | ret, cam_pix->width, cam_pix->height, pix->width, pix->height); | |
1476 | if (ret < 0) | |
1477 | return ret; | |
1478 | ||
1479 | /* 10. Use CEU scaling to scale to the requested user window. */ | |
961801bb GL |
1480 | |
1481 | /* We cannot scale up */ | |
6a6c8786 GL |
1482 | if (pix->width > cam_pix->width) |
1483 | pix->width = cam_pix->width; | |
1484 | if (pix->width > ceu_rect.width) | |
1485 | pix->width = ceu_rect.width; | |
961801bb | 1486 | |
6a6c8786 GL |
1487 | if (pix->height > cam_pix->height) |
1488 | pix->height = cam_pix->height; | |
1489 | if (pix->height > ceu_rect.height) | |
1490 | pix->height = ceu_rect.height; | |
961801bb GL |
1491 | |
1492 | /* Let's rock: scale pix->{width x height} down to width x height */ | |
6a6c8786 GL |
1493 | scale_h = calc_scale(ceu_rect.width, &pix->width); |
1494 | scale_v = calc_scale(ceu_rect.height, &pix->height); | |
961801bb | 1495 | |
6a6c8786 GL |
1496 | dev_geo(dev, "10: W: %u : 0x%x = %u, H: %u : 0x%x = %u\n", |
1497 | ceu_rect.width, scale_h, pix->width, | |
1498 | ceu_rect.height, scale_v, pix->height); | |
961801bb | 1499 | |
6a6c8786 | 1500 | pcdev->cflcr = scale_h | (scale_v << 16); |
961801bb GL |
1501 | |
1502 | icd->buswidth = xlate->buswidth; | |
1503 | icd->current_fmt = xlate->host_fmt; | |
1504 | cam->camera_fmt = xlate->cam_fmt; | |
6a6c8786 | 1505 | cam->ceu_rect = ceu_rect; |
961801bb GL |
1506 | |
1507 | pcdev->is_interlaced = is_interlaced; | |
6a6c8786 | 1508 | pcdev->image_mode = image_mode; |
961801bb GL |
1509 | |
1510 | return 0; | |
0d3244d6 MD |
1511 | } |
1512 | ||
d8fac217 GL |
1513 | static int sh_mobile_ceu_try_fmt(struct soc_camera_device *icd, |
1514 | struct v4l2_format *f) | |
0d3244d6 | 1515 | { |
9414de39 | 1516 | const struct soc_camera_format_xlate *xlate; |
904078f1 | 1517 | struct v4l2_pix_format *pix = &f->fmt.pix; |
c9c1f1c0 | 1518 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
904078f1 | 1519 | __u32 pixfmt = pix->pixelformat; |
961801bb | 1520 | int width, height; |
ccab8a29 | 1521 | int ret; |
a2c8c68c | 1522 | |
9414de39 MD |
1523 | xlate = soc_camera_xlate_by_fourcc(icd, pixfmt); |
1524 | if (!xlate) { | |
0166b743 | 1525 | dev_warn(icd->dev.parent, "Format %x not found\n", pixfmt); |
25c4d74e | 1526 | return -EINVAL; |
9414de39 | 1527 | } |
25c4d74e | 1528 | |
0d3244d6 MD |
1529 | /* FIXME: calculate using depth and bus width */ |
1530 | ||
904078f1 GL |
1531 | v4l_bound_align_image(&pix->width, 2, 2560, 1, |
1532 | &pix->height, 4, 1920, 2, 0); | |
0d3244d6 | 1533 | |
961801bb GL |
1534 | width = pix->width; |
1535 | height = pix->height; | |
1536 | ||
904078f1 | 1537 | pix->bytesperline = pix->width * |
9414de39 | 1538 | DIV_ROUND_UP(xlate->host_fmt->depth, 8); |
904078f1 | 1539 | pix->sizeimage = pix->height * pix->bytesperline; |
25c4d74e | 1540 | |
904078f1 | 1541 | pix->pixelformat = xlate->cam_fmt->fourcc; |
979ea1dd | 1542 | |
0d3244d6 | 1543 | /* limit to sensor capabilities */ |
c9c1f1c0 | 1544 | ret = v4l2_subdev_call(sd, video, try_fmt, f); |
904078f1 | 1545 | pix->pixelformat = pixfmt; |
ccab8a29 KM |
1546 | if (ret < 0) |
1547 | return ret; | |
1548 | ||
961801bb GL |
1549 | switch (pixfmt) { |
1550 | case V4L2_PIX_FMT_NV12: | |
1551 | case V4L2_PIX_FMT_NV21: | |
1552 | case V4L2_PIX_FMT_NV16: | |
1553 | case V4L2_PIX_FMT_NV61: | |
1554 | /* FIXME: check against rect_max after converting soc-camera */ | |
1555 | /* We can scale precisely, need a bigger image from camera */ | |
1556 | if (pix->width < width || pix->height < height) { | |
1557 | int tmp_w = pix->width, tmp_h = pix->height; | |
1558 | pix->width = 2560; | |
1559 | pix->height = 1920; | |
c9c1f1c0 | 1560 | ret = v4l2_subdev_call(sd, video, try_fmt, f); |
961801bb GL |
1561 | if (ret < 0) { |
1562 | /* Shouldn't actually happen... */ | |
0166b743 | 1563 | dev_err(icd->dev.parent, |
961801bb GL |
1564 | "FIXME: try_fmt() returned %d\n", ret); |
1565 | pix->width = tmp_w; | |
1566 | pix->height = tmp_h; | |
1567 | } | |
1568 | } | |
1569 | if (pix->width > width) | |
1570 | pix->width = width; | |
1571 | if (pix->height > height) | |
1572 | pix->height = height; | |
ccab8a29 KM |
1573 | } |
1574 | ||
1575 | return ret; | |
0d3244d6 MD |
1576 | } |
1577 | ||
1578 | static int sh_mobile_ceu_reqbufs(struct soc_camera_file *icf, | |
1579 | struct v4l2_requestbuffers *p) | |
1580 | { | |
1581 | int i; | |
1582 | ||
5d28d525 GL |
1583 | /* |
1584 | * This is for locking debugging only. I removed spinlocks and now I | |
0d3244d6 MD |
1585 | * check whether .prepare is ever called on a linked buffer, or whether |
1586 | * a dma IRQ can occur for an in-work or unlinked buffer. Until now | |
5d28d525 GL |
1587 | * it hadn't triggered |
1588 | */ | |
0d3244d6 MD |
1589 | for (i = 0; i < p->count; i++) { |
1590 | struct sh_mobile_ceu_buffer *buf; | |
1591 | ||
1592 | buf = container_of(icf->vb_vidq.bufs[i], | |
1593 | struct sh_mobile_ceu_buffer, vb); | |
1594 | INIT_LIST_HEAD(&buf->vb.queue); | |
1595 | } | |
1596 | ||
1597 | return 0; | |
1598 | } | |
1599 | ||
1600 | static unsigned int sh_mobile_ceu_poll(struct file *file, poll_table *pt) | |
1601 | { | |
1602 | struct soc_camera_file *icf = file->private_data; | |
1603 | struct sh_mobile_ceu_buffer *buf; | |
1604 | ||
1605 | buf = list_entry(icf->vb_vidq.stream.next, | |
1606 | struct sh_mobile_ceu_buffer, vb.stream); | |
1607 | ||
1608 | poll_wait(file, &buf->vb.done, pt); | |
1609 | ||
1610 | if (buf->vb.state == VIDEOBUF_DONE || | |
1611 | buf->vb.state == VIDEOBUF_ERROR) | |
1612 | return POLLIN|POLLRDNORM; | |
1613 | ||
1614 | return 0; | |
1615 | } | |
1616 | ||
1617 | static int sh_mobile_ceu_querycap(struct soc_camera_host *ici, | |
1618 | struct v4l2_capability *cap) | |
1619 | { | |
1620 | strlcpy(cap->card, "SuperH_Mobile_CEU", sizeof(cap->card)); | |
1621 | cap->version = KERNEL_VERSION(0, 0, 5); | |
1622 | cap->capabilities = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING; | |
1623 | return 0; | |
1624 | } | |
1625 | ||
1626 | static void sh_mobile_ceu_init_videobuf(struct videobuf_queue *q, | |
1627 | struct soc_camera_device *icd) | |
1628 | { | |
1629 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); | |
1630 | struct sh_mobile_ceu_dev *pcdev = ici->priv; | |
1631 | ||
1632 | videobuf_queue_dma_contig_init(q, | |
1633 | &sh_mobile_ceu_videobuf_ops, | |
0166b743 | 1634 | icd->dev.parent, &pcdev->lock, |
0d3244d6 | 1635 | V4L2_BUF_TYPE_VIDEO_CAPTURE, |
e802967c GL |
1636 | pcdev->is_interlaced ? |
1637 | V4L2_FIELD_INTERLACED : V4L2_FIELD_NONE, | |
0d3244d6 MD |
1638 | sizeof(struct sh_mobile_ceu_buffer), |
1639 | icd); | |
1640 | } | |
1641 | ||
4a6110bc GL |
1642 | static int sh_mobile_ceu_get_ctrl(struct soc_camera_device *icd, |
1643 | struct v4l2_control *ctrl) | |
1644 | { | |
1645 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); | |
1646 | struct sh_mobile_ceu_dev *pcdev = ici->priv; | |
1647 | u32 val; | |
1648 | ||
1649 | switch (ctrl->id) { | |
1650 | case V4L2_CID_SHARPNESS: | |
1651 | val = ceu_read(pcdev, CLFCR); | |
1652 | ctrl->value = val ^ 1; | |
1653 | return 0; | |
1654 | } | |
1655 | return -ENOIOCTLCMD; | |
1656 | } | |
1657 | ||
1658 | static int sh_mobile_ceu_set_ctrl(struct soc_camera_device *icd, | |
1659 | struct v4l2_control *ctrl) | |
1660 | { | |
1661 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); | |
1662 | struct sh_mobile_ceu_dev *pcdev = ici->priv; | |
1663 | ||
1664 | switch (ctrl->id) { | |
1665 | case V4L2_CID_SHARPNESS: | |
1666 | switch (icd->current_fmt->fourcc) { | |
1667 | case V4L2_PIX_FMT_NV12: | |
1668 | case V4L2_PIX_FMT_NV21: | |
1669 | case V4L2_PIX_FMT_NV16: | |
1670 | case V4L2_PIX_FMT_NV61: | |
1671 | ceu_write(pcdev, CLFCR, !ctrl->value); | |
1672 | return 0; | |
1673 | } | |
1674 | return -EINVAL; | |
1675 | } | |
1676 | return -ENOIOCTLCMD; | |
1677 | } | |
1678 | ||
1679 | static const struct v4l2_queryctrl sh_mobile_ceu_controls[] = { | |
1680 | { | |
1681 | .id = V4L2_CID_SHARPNESS, | |
1682 | .type = V4L2_CTRL_TYPE_BOOLEAN, | |
1683 | .name = "Low-pass filter", | |
1684 | .minimum = 0, | |
1685 | .maximum = 1, | |
1686 | .step = 1, | |
1687 | .default_value = 0, | |
1688 | }, | |
1689 | }; | |
1690 | ||
0d3244d6 MD |
1691 | static struct soc_camera_host_ops sh_mobile_ceu_host_ops = { |
1692 | .owner = THIS_MODULE, | |
1693 | .add = sh_mobile_ceu_add_device, | |
1694 | .remove = sh_mobile_ceu_remove_device, | |
9414de39 | 1695 | .get_formats = sh_mobile_ceu_get_formats, |
904078f1 | 1696 | .put_formats = sh_mobile_ceu_put_formats, |
09e231b3 | 1697 | .set_crop = sh_mobile_ceu_set_crop, |
d8fac217 GL |
1698 | .set_fmt = sh_mobile_ceu_set_fmt, |
1699 | .try_fmt = sh_mobile_ceu_try_fmt, | |
4a6110bc GL |
1700 | .set_ctrl = sh_mobile_ceu_set_ctrl, |
1701 | .get_ctrl = sh_mobile_ceu_get_ctrl, | |
0d3244d6 MD |
1702 | .reqbufs = sh_mobile_ceu_reqbufs, |
1703 | .poll = sh_mobile_ceu_poll, | |
1704 | .querycap = sh_mobile_ceu_querycap, | |
0d3244d6 MD |
1705 | .set_bus_param = sh_mobile_ceu_set_bus_param, |
1706 | .init_videobuf = sh_mobile_ceu_init_videobuf, | |
4a6110bc GL |
1707 | .controls = sh_mobile_ceu_controls, |
1708 | .num_controls = ARRAY_SIZE(sh_mobile_ceu_controls), | |
0d3244d6 MD |
1709 | }; |
1710 | ||
979ea1dd | 1711 | static int __devinit sh_mobile_ceu_probe(struct platform_device *pdev) |
0d3244d6 MD |
1712 | { |
1713 | struct sh_mobile_ceu_dev *pcdev; | |
1714 | struct resource *res; | |
1715 | void __iomem *base; | |
1716 | unsigned int irq; | |
1717 | int err = 0; | |
1718 | ||
1719 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); | |
1720 | irq = platform_get_irq(pdev, 0); | |
1721 | if (!res || !irq) { | |
1722 | dev_err(&pdev->dev, "Not enough CEU platform resources.\n"); | |
1723 | err = -ENODEV; | |
1724 | goto exit; | |
1725 | } | |
1726 | ||
1727 | pcdev = kzalloc(sizeof(*pcdev), GFP_KERNEL); | |
1728 | if (!pcdev) { | |
1729 | dev_err(&pdev->dev, "Could not allocate pcdev\n"); | |
1730 | err = -ENOMEM; | |
1731 | goto exit; | |
1732 | } | |
1733 | ||
0d3244d6 MD |
1734 | INIT_LIST_HEAD(&pcdev->capture); |
1735 | spin_lock_init(&pcdev->lock); | |
1736 | ||
1737 | pcdev->pdata = pdev->dev.platform_data; | |
1738 | if (!pcdev->pdata) { | |
1739 | err = -EINVAL; | |
1740 | dev_err(&pdev->dev, "CEU platform data not set.\n"); | |
1741 | goto exit_kfree; | |
1742 | } | |
1743 | ||
eb6c8558 | 1744 | base = ioremap_nocache(res->start, resource_size(res)); |
0d3244d6 MD |
1745 | if (!base) { |
1746 | err = -ENXIO; | |
1747 | dev_err(&pdev->dev, "Unable to ioremap CEU registers.\n"); | |
1748 | goto exit_kfree; | |
1749 | } | |
1750 | ||
1751 | pcdev->irq = irq; | |
1752 | pcdev->base = base; | |
1753 | pcdev->video_limit = 0; /* only enabled if second resource exists */ | |
0d3244d6 MD |
1754 | |
1755 | res = platform_get_resource(pdev, IORESOURCE_MEM, 1); | |
1756 | if (res) { | |
1757 | err = dma_declare_coherent_memory(&pdev->dev, res->start, | |
1758 | res->start, | |
eb6c8558 | 1759 | resource_size(res), |
0d3244d6 MD |
1760 | DMA_MEMORY_MAP | |
1761 | DMA_MEMORY_EXCLUSIVE); | |
1762 | if (!err) { | |
1763 | dev_err(&pdev->dev, "Unable to declare CEU memory.\n"); | |
1764 | err = -ENXIO; | |
1765 | goto exit_iounmap; | |
1766 | } | |
1767 | ||
eb6c8558 | 1768 | pcdev->video_limit = resource_size(res); |
0d3244d6 MD |
1769 | } |
1770 | ||
1771 | /* request irq */ | |
1772 | err = request_irq(pcdev->irq, sh_mobile_ceu_irq, IRQF_DISABLED, | |
af128a10 | 1773 | dev_name(&pdev->dev), pcdev); |
0d3244d6 MD |
1774 | if (err) { |
1775 | dev_err(&pdev->dev, "Unable to register CEU interrupt.\n"); | |
1776 | goto exit_release_mem; | |
1777 | } | |
1778 | ||
6d1386c6 MD |
1779 | pm_suspend_ignore_children(&pdev->dev, true); |
1780 | pm_runtime_enable(&pdev->dev); | |
1781 | pm_runtime_resume(&pdev->dev); | |
a42b6dd6 | 1782 | |
0d3244d6 | 1783 | pcdev->ici.priv = pcdev; |
979ea1dd | 1784 | pcdev->ici.v4l2_dev.dev = &pdev->dev; |
0d3244d6 | 1785 | pcdev->ici.nr = pdev->id; |
af128a10 KS |
1786 | pcdev->ici.drv_name = dev_name(&pdev->dev); |
1787 | pcdev->ici.ops = &sh_mobile_ceu_host_ops; | |
0d3244d6 MD |
1788 | |
1789 | err = soc_camera_host_register(&pcdev->ici); | |
1790 | if (err) | |
055e05a0 | 1791 | goto exit_free_clk; |
0d3244d6 MD |
1792 | |
1793 | return 0; | |
1794 | ||
055e05a0 KM |
1795 | exit_free_clk: |
1796 | pm_runtime_disable(&pdev->dev); | |
0d3244d6 MD |
1797 | free_irq(pcdev->irq, pcdev); |
1798 | exit_release_mem: | |
1799 | if (platform_get_resource(pdev, IORESOURCE_MEM, 1)) | |
1800 | dma_release_declared_memory(&pdev->dev); | |
1801 | exit_iounmap: | |
1802 | iounmap(base); | |
1803 | exit_kfree: | |
1804 | kfree(pcdev); | |
1805 | exit: | |
1806 | return err; | |
1807 | } | |
1808 | ||
979ea1dd | 1809 | static int __devexit sh_mobile_ceu_remove(struct platform_device *pdev) |
0d3244d6 | 1810 | { |
eff505fa GL |
1811 | struct soc_camera_host *soc_host = to_soc_camera_host(&pdev->dev); |
1812 | struct sh_mobile_ceu_dev *pcdev = container_of(soc_host, | |
1813 | struct sh_mobile_ceu_dev, ici); | |
0d3244d6 | 1814 | |
eff505fa | 1815 | soc_camera_host_unregister(soc_host); |
055e05a0 | 1816 | pm_runtime_disable(&pdev->dev); |
0d3244d6 MD |
1817 | free_irq(pcdev->irq, pcdev); |
1818 | if (platform_get_resource(pdev, IORESOURCE_MEM, 1)) | |
1819 | dma_release_declared_memory(&pdev->dev); | |
1820 | iounmap(pcdev->base); | |
1821 | kfree(pcdev); | |
1822 | return 0; | |
1823 | } | |
1824 | ||
6d1386c6 MD |
1825 | static int sh_mobile_ceu_runtime_nop(struct device *dev) |
1826 | { | |
1827 | /* Runtime PM callback shared between ->runtime_suspend() | |
1828 | * and ->runtime_resume(). Simply returns success. | |
1829 | * | |
1830 | * This driver re-initializes all registers after | |
1831 | * pm_runtime_get_sync() anyway so there is no need | |
1832 | * to save and restore registers here. | |
1833 | */ | |
1834 | return 0; | |
1835 | } | |
1836 | ||
47145210 | 1837 | static const struct dev_pm_ops sh_mobile_ceu_dev_pm_ops = { |
6d1386c6 MD |
1838 | .runtime_suspend = sh_mobile_ceu_runtime_nop, |
1839 | .runtime_resume = sh_mobile_ceu_runtime_nop, | |
1840 | }; | |
1841 | ||
0d3244d6 MD |
1842 | static struct platform_driver sh_mobile_ceu_driver = { |
1843 | .driver = { | |
1844 | .name = "sh_mobile_ceu", | |
6d1386c6 | 1845 | .pm = &sh_mobile_ceu_dev_pm_ops, |
0d3244d6 MD |
1846 | }, |
1847 | .probe = sh_mobile_ceu_probe, | |
50e55fd1 | 1848 | .remove = __devexit_p(sh_mobile_ceu_remove), |
0d3244d6 MD |
1849 | }; |
1850 | ||
1851 | static int __init sh_mobile_ceu_init(void) | |
1852 | { | |
1853 | return platform_driver_register(&sh_mobile_ceu_driver); | |
1854 | } | |
1855 | ||
1856 | static void __exit sh_mobile_ceu_exit(void) | |
1857 | { | |
01c1e4ca | 1858 | platform_driver_unregister(&sh_mobile_ceu_driver); |
0d3244d6 MD |
1859 | } |
1860 | ||
1861 | module_init(sh_mobile_ceu_init); | |
1862 | module_exit(sh_mobile_ceu_exit); | |
1863 | ||
1864 | MODULE_DESCRIPTION("SuperH Mobile CEU driver"); | |
1865 | MODULE_AUTHOR("Magnus Damm"); | |
1866 | MODULE_LICENSE("GPL"); | |
40e2e092 | 1867 | MODULE_ALIAS("platform:sh_mobile_ceu"); |