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