Commit | Line | Data |
---|---|---|
0d3244d6 MD |
1 | /* |
2 | * V4L2 Driver for SuperH Mobile CEU interface | |
3 | * | |
4 | * Copyright (C) 2008 Magnus Damm | |
5 | * | |
6 | * Based on V4L2 Driver for PXA camera host - "pxa_camera.c", | |
7 | * | |
8 | * Copyright (C) 2006, Sascha Hauer, Pengutronix | |
9 | * Copyright (C) 2008, Guennadi Liakhovetski <kernel@pengutronix.de> | |
10 | * | |
11 | * This program is free software; you can redistribute it and/or modify | |
12 | * it under the terms of the GNU General Public License as published by | |
13 | * the Free Software Foundation; either version 2 of the License, or | |
14 | * (at your option) any later version. | |
15 | */ | |
16 | ||
17 | #include <linux/init.h> | |
18 | #include <linux/module.h> | |
19 | #include <linux/io.h> | |
20 | #include <linux/delay.h> | |
21 | #include <linux/dma-mapping.h> | |
22 | #include <linux/errno.h> | |
23 | #include <linux/fs.h> | |
24 | #include <linux/interrupt.h> | |
25 | #include <linux/kernel.h> | |
26 | #include <linux/mm.h> | |
27 | #include <linux/moduleparam.h> | |
28 | #include <linux/time.h> | |
29 | #include <linux/version.h> | |
5a0e3ad6 | 30 | #include <linux/slab.h> |
0d3244d6 MD |
31 | #include <linux/device.h> |
32 | #include <linux/platform_device.h> | |
0d3244d6 | 33 | #include <linux/videodev2.h> |
6d1386c6 | 34 | #include <linux/pm_runtime.h> |
f39c1ab3 | 35 | #include <linux/sched.h> |
0d3244d6 MD |
36 | |
37 | #include <media/v4l2-common.h> | |
38 | #include <media/v4l2-dev.h> | |
39 | #include <media/soc_camera.h> | |
40 | #include <media/sh_mobile_ceu.h> | |
41 | #include <media/videobuf-dma-contig.h> | |
760697be GL |
42 | #include <media/v4l2-mediabus.h> |
43 | #include <media/soc_mediabus.h> | |
0d3244d6 MD |
44 | |
45 | /* register offsets for sh7722 / sh7723 */ | |
46 | ||
dd54203b MD |
47 | #define CAPSR 0x00 /* Capture start register */ |
48 | #define CAPCR 0x04 /* Capture control register */ | |
49 | #define CAMCR 0x08 /* Capture interface control register */ | |
50 | #define CMCYR 0x0c /* Capture interface cycle register */ | |
51 | #define CAMOR 0x10 /* Capture interface offset register */ | |
52 | #define CAPWR 0x14 /* Capture interface width register */ | |
53 | #define CAIFR 0x18 /* Capture interface input format register */ | |
54 | #define CSTCR 0x20 /* Camera strobe control register (<= sh7722) */ | |
55 | #define CSECR 0x24 /* Camera strobe emission count register (<= sh7722) */ | |
56 | #define CRCNTR 0x28 /* CEU register control register */ | |
57 | #define CRCMPR 0x2c /* CEU register forcible control register */ | |
58 | #define CFLCR 0x30 /* Capture filter control register */ | |
59 | #define CFSZR 0x34 /* Capture filter size clip register */ | |
60 | #define CDWDR 0x38 /* Capture destination width register */ | |
61 | #define CDAYR 0x3c /* Capture data address Y register */ | |
62 | #define CDACR 0x40 /* Capture data address C register */ | |
63 | #define CDBYR 0x44 /* Capture data bottom-field address Y register */ | |
64 | #define CDBCR 0x48 /* Capture data bottom-field address C register */ | |
65 | #define CBDSR 0x4c /* Capture bundle destination size register */ | |
66 | #define CFWCR 0x5c /* Firewall operation control register */ | |
67 | #define CLFCR 0x60 /* Capture low-pass filter control register */ | |
68 | #define CDOCR 0x64 /* Capture data output control register */ | |
69 | #define CDDCR 0x68 /* Capture data complexity level register */ | |
70 | #define CDDAR 0x6c /* Capture data complexity level address register */ | |
71 | #define CEIER 0x70 /* Capture event interrupt enable register */ | |
72 | #define CETCR 0x74 /* Capture event flag clear register */ | |
73 | #define CSTSR 0x7c /* Capture status register */ | |
74 | #define CSRTR 0x80 /* Capture software reset register */ | |
75 | #define CDSSR 0x84 /* Capture data size register */ | |
76 | #define CDAYR2 0x90 /* Capture data address Y register 2 */ | |
77 | #define CDACR2 0x94 /* Capture data address C register 2 */ | |
78 | #define CDBYR2 0x98 /* Capture data bottom-field address Y register 2 */ | |
79 | #define CDBCR2 0x9c /* Capture data bottom-field address C register 2 */ | |
0d3244d6 | 80 | |
6a6c8786 GL |
81 | #undef DEBUG_GEOMETRY |
82 | #ifdef DEBUG_GEOMETRY | |
83 | #define dev_geo dev_info | |
84 | #else | |
85 | #define dev_geo dev_dbg | |
86 | #endif | |
87 | ||
0d3244d6 MD |
88 | /* per video frame buffer */ |
89 | struct sh_mobile_ceu_buffer { | |
90 | struct videobuf_buffer vb; /* v4l buffer must be first */ | |
760697be | 91 | enum v4l2_mbus_pixelcode code; |
0d3244d6 MD |
92 | }; |
93 | ||
94 | struct sh_mobile_ceu_dev { | |
0d3244d6 MD |
95 | struct soc_camera_host ici; |
96 | struct soc_camera_device *icd; | |
97 | ||
98 | unsigned int irq; | |
99 | void __iomem *base; | |
100 | unsigned long video_limit; | |
101 | ||
c60f2b5c | 102 | /* lock used to protect videobuf */ |
0d3244d6 MD |
103 | spinlock_t lock; |
104 | struct list_head capture; | |
105 | struct videobuf_buffer *active; | |
106 | ||
107 | struct sh_mobile_ceu_info *pdata; | |
8be65dc5 | 108 | |
961801bb GL |
109 | u32 cflcr; |
110 | ||
1edcc10d KM |
111 | enum v4l2_field field; |
112 | ||
904078f1 GL |
113 | unsigned int image_mode:1; |
114 | unsigned int is_16bit:1; | |
115 | }; | |
116 | ||
117 | struct sh_mobile_ceu_cam { | |
e622681d GL |
118 | /* CEU offsets within scaled by the CEU camera output */ |
119 | unsigned int ceu_left; | |
120 | unsigned int ceu_top; | |
121 | /* Client output, as seen by the CEU */ | |
122 | unsigned int width; | |
123 | unsigned int height; | |
124 | /* | |
125 | * User window from S_CROP / G_CROP, produced by client cropping and | |
126 | * scaling, CEU scaling and CEU cropping, mapped back onto the client | |
127 | * input window | |
128 | */ | |
129 | struct v4l2_rect subrect; | |
130 | /* Camera cropping rectangle */ | |
131 | struct v4l2_rect rect; | |
760697be GL |
132 | const struct soc_mbus_pixelfmt *extra_fmt; |
133 | enum v4l2_mbus_pixelcode code; | |
0d3244d6 MD |
134 | }; |
135 | ||
c354b400 KM |
136 | static unsigned long make_bus_param(struct sh_mobile_ceu_dev *pcdev) |
137 | { | |
138 | unsigned long flags; | |
139 | ||
140 | flags = SOCAM_MASTER | | |
141 | SOCAM_PCLK_SAMPLE_RISING | | |
142 | SOCAM_HSYNC_ACTIVE_HIGH | | |
143 | SOCAM_HSYNC_ACTIVE_LOW | | |
144 | SOCAM_VSYNC_ACTIVE_HIGH | | |
145 | SOCAM_VSYNC_ACTIVE_LOW | | |
146 | SOCAM_DATA_ACTIVE_HIGH; | |
147 | ||
148 | if (pcdev->pdata->flags & SH_CEU_FLAG_USE_8BIT_BUS) | |
149 | flags |= SOCAM_DATAWIDTH_8; | |
150 | ||
151 | if (pcdev->pdata->flags & SH_CEU_FLAG_USE_16BIT_BUS) | |
152 | flags |= SOCAM_DATAWIDTH_16; | |
153 | ||
154 | if (flags & SOCAM_DATAWIDTH_MASK) | |
155 | return flags; | |
156 | ||
157 | return 0; | |
158 | } | |
159 | ||
0d3244d6 | 160 | static void ceu_write(struct sh_mobile_ceu_dev *priv, |
7a1a8164 | 161 | unsigned long reg_offs, u32 data) |
0d3244d6 MD |
162 | { |
163 | iowrite32(data, priv->base + reg_offs); | |
164 | } | |
165 | ||
7a1a8164 | 166 | static u32 ceu_read(struct sh_mobile_ceu_dev *priv, unsigned long reg_offs) |
0d3244d6 MD |
167 | { |
168 | return ioread32(priv->base + reg_offs); | |
169 | } | |
170 | ||
b1de7aeb KM |
171 | static int sh_mobile_ceu_soft_reset(struct sh_mobile_ceu_dev *pcdev) |
172 | { | |
173 | int i, success = 0; | |
174 | struct soc_camera_device *icd = pcdev->icd; | |
175 | ||
176 | ceu_write(pcdev, CAPSR, 1 << 16); /* reset */ | |
177 | ||
178 | /* wait CSTSR.CPTON bit */ | |
179 | for (i = 0; i < 1000; i++) { | |
180 | if (!(ceu_read(pcdev, CSTSR) & 1)) { | |
181 | success++; | |
182 | break; | |
183 | } | |
184 | udelay(1); | |
185 | } | |
186 | ||
187 | /* wait CAPSR.CPKIL bit */ | |
188 | for (i = 0; i < 1000; i++) { | |
189 | if (!(ceu_read(pcdev, CAPSR) & (1 << 16))) { | |
190 | success++; | |
191 | break; | |
192 | } | |
193 | udelay(1); | |
194 | } | |
195 | ||
196 | ||
197 | if (2 != success) { | |
198 | dev_warn(&icd->dev, "soft reset time out\n"); | |
199 | return -EIO; | |
200 | } | |
201 | ||
202 | return 0; | |
203 | } | |
204 | ||
0d3244d6 MD |
205 | /* |
206 | * Videobuf operations | |
207 | */ | |
208 | static int sh_mobile_ceu_videobuf_setup(struct videobuf_queue *vq, | |
209 | unsigned int *count, | |
210 | unsigned int *size) | |
211 | { | |
212 | struct soc_camera_device *icd = vq->priv_data; | |
213 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); | |
214 | struct sh_mobile_ceu_dev *pcdev = ici->priv; | |
760697be GL |
215 | int bytes_per_line = soc_mbus_bytes_per_line(icd->user_width, |
216 | icd->current_fmt->host_fmt); | |
0d3244d6 | 217 | |
760697be GL |
218 | if (bytes_per_line < 0) |
219 | return bytes_per_line; | |
220 | ||
e6641c80 | 221 | *size = bytes_per_line * icd->user_height; |
0d3244d6 MD |
222 | |
223 | if (0 == *count) | |
224 | *count = 2; | |
225 | ||
226 | if (pcdev->video_limit) { | |
dab7e310 AB |
227 | if (PAGE_ALIGN(*size) * *count > pcdev->video_limit) |
228 | *count = pcdev->video_limit / PAGE_ALIGN(*size); | |
0d3244d6 MD |
229 | } |
230 | ||
0166b743 | 231 | dev_dbg(icd->dev.parent, "count=%d, size=%d\n", *count, *size); |
0d3244d6 MD |
232 | |
233 | return 0; | |
234 | } | |
235 | ||
236 | static void free_buffer(struct videobuf_queue *vq, | |
237 | struct sh_mobile_ceu_buffer *buf) | |
238 | { | |
239 | struct soc_camera_device *icd = vq->priv_data; | |
6a6c8786 | 240 | struct device *dev = icd->dev.parent; |
0d3244d6 | 241 | |
6a6c8786 | 242 | dev_dbg(dev, "%s (vb=0x%p) 0x%08lx %zd\n", __func__, |
0d3244d6 MD |
243 | &buf->vb, buf->vb.baddr, buf->vb.bsize); |
244 | ||
245 | if (in_interrupt()) | |
246 | BUG(); | |
247 | ||
97215cbd | 248 | videobuf_waiton(&buf->vb, 0, 0); |
0d3244d6 | 249 | videobuf_dma_contig_free(vq, &buf->vb); |
6a6c8786 | 250 | dev_dbg(dev, "%s freed\n", __func__); |
0d3244d6 MD |
251 | buf->vb.state = VIDEOBUF_NEEDS_INIT; |
252 | } | |
253 | ||
7a1a8164 MD |
254 | #define CEU_CETCR_MAGIC 0x0317f313 /* acknowledge magical interrupt sources */ |
255 | #define CEU_CETCR_IGRW (1 << 4) /* prohibited register access interrupt bit */ | |
256 | #define CEU_CEIER_CPEIE (1 << 0) /* one-frame capture end interrupt */ | |
5cf93f1d | 257 | #define CEU_CEIER_VBP (1 << 20) /* vbp error */ |
7a1a8164 | 258 | #define CEU_CAPCR_CTNCP (1 << 16) /* continuous capture mode (if set) */ |
5cf93f1d | 259 | #define CEU_CEIER_MASK (CEU_CEIER_CPEIE | CEU_CEIER_VBP) |
7a1a8164 MD |
260 | |
261 | ||
5cf93f1d KM |
262 | /* |
263 | * return value doesn't reflex the success/failure to queue the new buffer, | |
264 | * but rather the status of the previous buffer. | |
265 | */ | |
266 | static int sh_mobile_ceu_capture(struct sh_mobile_ceu_dev *pcdev) | |
0d3244d6 | 267 | { |
8be65dc5 | 268 | struct soc_camera_device *icd = pcdev->icd; |
ccab8a29 | 269 | dma_addr_t phys_addr_top, phys_addr_bottom; |
1edcc10d KM |
270 | unsigned long top1, top2; |
271 | unsigned long bottom1, bottom2; | |
5cf93f1d KM |
272 | u32 status; |
273 | int ret = 0; | |
7a1a8164 | 274 | |
5d28d525 GL |
275 | /* |
276 | * The hardware is _very_ picky about this sequence. Especially | |
7a1a8164 MD |
277 | * the CEU_CETCR_MAGIC value. It seems like we need to acknowledge |
278 | * several not-so-well documented interrupt sources in CETCR. | |
279 | */ | |
5cf93f1d KM |
280 | ceu_write(pcdev, CEIER, ceu_read(pcdev, CEIER) & ~CEU_CEIER_MASK); |
281 | status = ceu_read(pcdev, CETCR); | |
282 | ceu_write(pcdev, CETCR, ~status & CEU_CETCR_MAGIC); | |
283 | ceu_write(pcdev, CEIER, ceu_read(pcdev, CEIER) | CEU_CEIER_MASK); | |
7a1a8164 MD |
284 | ceu_write(pcdev, CAPCR, ceu_read(pcdev, CAPCR) & ~CEU_CAPCR_CTNCP); |
285 | ceu_write(pcdev, CETCR, CEU_CETCR_MAGIC ^ CEU_CETCR_IGRW); | |
0d3244d6 | 286 | |
5cf93f1d KM |
287 | /* |
288 | * When a VBP interrupt occurs, a capture end interrupt does not occur | |
289 | * and the image of that frame is not captured correctly. So, soft reset | |
290 | * is needed here. | |
291 | */ | |
292 | if (status & CEU_CEIER_VBP) { | |
293 | sh_mobile_ceu_soft_reset(pcdev); | |
294 | ret = -EIO; | |
295 | } | |
296 | ||
8be65dc5 | 297 | if (!pcdev->active) |
5cf93f1d | 298 | return ret; |
8be65dc5 | 299 | |
1edcc10d KM |
300 | if (V4L2_FIELD_INTERLACED_BT == pcdev->field) { |
301 | top1 = CDBYR; | |
302 | top2 = CDBCR; | |
303 | bottom1 = CDAYR; | |
304 | bottom2 = CDACR; | |
305 | } else { | |
306 | top1 = CDAYR; | |
307 | top2 = CDACR; | |
308 | bottom1 = CDBYR; | |
309 | bottom2 = CDBCR; | |
310 | } | |
311 | ||
ccab8a29 | 312 | phys_addr_top = videobuf_to_dma_contig(pcdev->active); |
1edcc10d KM |
313 | ceu_write(pcdev, top1, phys_addr_top); |
314 | if (V4L2_FIELD_NONE != pcdev->field) { | |
6a6c8786 | 315 | phys_addr_bottom = phys_addr_top + icd->user_width; |
1edcc10d | 316 | ceu_write(pcdev, bottom1, phys_addr_bottom); |
ccab8a29 | 317 | } |
8be65dc5 | 318 | |
760697be | 319 | switch (icd->current_fmt->host_fmt->fourcc) { |
8be65dc5 MD |
320 | case V4L2_PIX_FMT_NV12: |
321 | case V4L2_PIX_FMT_NV21: | |
9e4a56d2 MD |
322 | case V4L2_PIX_FMT_NV16: |
323 | case V4L2_PIX_FMT_NV61: | |
6a6c8786 GL |
324 | phys_addr_top += icd->user_width * |
325 | icd->user_height; | |
1edcc10d KM |
326 | ceu_write(pcdev, top2, phys_addr_top); |
327 | if (V4L2_FIELD_NONE != pcdev->field) { | |
328 | phys_addr_bottom = phys_addr_top + icd->user_width; | |
329 | ceu_write(pcdev, bottom2, phys_addr_bottom); | |
ccab8a29 | 330 | } |
0d3244d6 | 331 | } |
8be65dc5 MD |
332 | |
333 | pcdev->active->state = VIDEOBUF_ACTIVE; | |
334 | ceu_write(pcdev, CAPSR, 0x1); /* start capture */ | |
5cf93f1d KM |
335 | |
336 | return ret; | |
0d3244d6 MD |
337 | } |
338 | ||
339 | static int sh_mobile_ceu_videobuf_prepare(struct videobuf_queue *vq, | |
340 | struct videobuf_buffer *vb, | |
341 | enum v4l2_field field) | |
342 | { | |
343 | struct soc_camera_device *icd = vq->priv_data; | |
344 | struct sh_mobile_ceu_buffer *buf; | |
760697be GL |
345 | int bytes_per_line = soc_mbus_bytes_per_line(icd->user_width, |
346 | icd->current_fmt->host_fmt); | |
0d3244d6 MD |
347 | int ret; |
348 | ||
760697be GL |
349 | if (bytes_per_line < 0) |
350 | return bytes_per_line; | |
351 | ||
0d3244d6 MD |
352 | buf = container_of(vb, struct sh_mobile_ceu_buffer, vb); |
353 | ||
0166b743 | 354 | dev_dbg(icd->dev.parent, "%s (vb=0x%p) 0x%08lx %zd\n", __func__, |
0d3244d6 MD |
355 | vb, vb->baddr, vb->bsize); |
356 | ||
357 | /* Added list head initialization on alloc */ | |
358 | WARN_ON(!list_empty(&vb->queue)); | |
359 | ||
360 | #ifdef DEBUG | |
5d28d525 GL |
361 | /* |
362 | * This can be useful if you want to see if we actually fill | |
363 | * the buffer with something | |
364 | */ | |
0d3244d6 MD |
365 | memset((void *)vb->baddr, 0xaa, vb->bsize); |
366 | #endif | |
367 | ||
368 | BUG_ON(NULL == icd->current_fmt); | |
369 | ||
760697be | 370 | if (buf->code != icd->current_fmt->code || |
6a6c8786 GL |
371 | vb->width != icd->user_width || |
372 | vb->height != icd->user_height || | |
0d3244d6 | 373 | vb->field != field) { |
760697be | 374 | buf->code = icd->current_fmt->code; |
6a6c8786 GL |
375 | vb->width = icd->user_width; |
376 | vb->height = icd->user_height; | |
0d3244d6 MD |
377 | vb->field = field; |
378 | vb->state = VIDEOBUF_NEEDS_INIT; | |
379 | } | |
380 | ||
760697be | 381 | vb->size = vb->height * bytes_per_line; |
0d3244d6 MD |
382 | if (0 != vb->baddr && vb->bsize < vb->size) { |
383 | ret = -EINVAL; | |
384 | goto out; | |
385 | } | |
386 | ||
387 | if (vb->state == VIDEOBUF_NEEDS_INIT) { | |
388 | ret = videobuf_iolock(vq, vb, NULL); | |
389 | if (ret) | |
390 | goto fail; | |
391 | vb->state = VIDEOBUF_PREPARED; | |
392 | } | |
393 | ||
394 | return 0; | |
395 | fail: | |
396 | free_buffer(vq, buf); | |
397 | out: | |
398 | return ret; | |
399 | } | |
400 | ||
2dd54a54 | 401 | /* Called under spinlock_irqsave(&pcdev->lock, ...) */ |
0d3244d6 MD |
402 | static void sh_mobile_ceu_videobuf_queue(struct videobuf_queue *vq, |
403 | struct videobuf_buffer *vb) | |
404 | { | |
405 | struct soc_camera_device *icd = vq->priv_data; | |
406 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); | |
407 | struct sh_mobile_ceu_dev *pcdev = ici->priv; | |
0d3244d6 | 408 | |
0166b743 | 409 | dev_dbg(icd->dev.parent, "%s (vb=0x%p) 0x%08lx %zd\n", __func__, |
0d3244d6 MD |
410 | vb, vb->baddr, vb->bsize); |
411 | ||
51354cc3 | 412 | vb->state = VIDEOBUF_QUEUED; |
0d3244d6 MD |
413 | list_add_tail(&vb->queue, &pcdev->capture); |
414 | ||
415 | if (!pcdev->active) { | |
5cf93f1d KM |
416 | /* |
417 | * Because there were no active buffer at this moment, | |
418 | * we are not interested in the return value of | |
419 | * sh_mobile_ceu_capture here. | |
420 | */ | |
0d3244d6 MD |
421 | pcdev->active = vb; |
422 | sh_mobile_ceu_capture(pcdev); | |
423 | } | |
0d3244d6 MD |
424 | } |
425 | ||
426 | static void sh_mobile_ceu_videobuf_release(struct videobuf_queue *vq, | |
427 | struct videobuf_buffer *vb) | |
428 | { | |
cca0e549 GL |
429 | struct soc_camera_device *icd = vq->priv_data; |
430 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); | |
431 | struct sh_mobile_ceu_dev *pcdev = ici->priv; | |
432 | unsigned long flags; | |
433 | ||
434 | spin_lock_irqsave(&pcdev->lock, flags); | |
435 | ||
436 | if (pcdev->active == vb) { | |
437 | /* disable capture (release DMA buffer), reset */ | |
438 | ceu_write(pcdev, CAPSR, 1 << 16); | |
439 | pcdev->active = NULL; | |
440 | } | |
441 | ||
442 | if ((vb->state == VIDEOBUF_ACTIVE || vb->state == VIDEOBUF_QUEUED) && | |
443 | !list_empty(&vb->queue)) { | |
444 | vb->state = VIDEOBUF_ERROR; | |
445 | list_del_init(&vb->queue); | |
446 | } | |
447 | ||
448 | spin_unlock_irqrestore(&pcdev->lock, flags); | |
449 | ||
0d3244d6 MD |
450 | free_buffer(vq, container_of(vb, struct sh_mobile_ceu_buffer, vb)); |
451 | } | |
452 | ||
453 | static struct videobuf_queue_ops sh_mobile_ceu_videobuf_ops = { | |
454 | .buf_setup = sh_mobile_ceu_videobuf_setup, | |
455 | .buf_prepare = sh_mobile_ceu_videobuf_prepare, | |
456 | .buf_queue = sh_mobile_ceu_videobuf_queue, | |
457 | .buf_release = sh_mobile_ceu_videobuf_release, | |
458 | }; | |
459 | ||
460 | static irqreturn_t sh_mobile_ceu_irq(int irq, void *data) | |
461 | { | |
462 | struct sh_mobile_ceu_dev *pcdev = data; | |
463 | struct videobuf_buffer *vb; | |
464 | unsigned long flags; | |
465 | ||
466 | spin_lock_irqsave(&pcdev->lock, flags); | |
467 | ||
468 | vb = pcdev->active; | |
cca0e549 GL |
469 | if (!vb) |
470 | /* Stale interrupt from a released buffer */ | |
471 | goto out; | |
472 | ||
0d3244d6 MD |
473 | list_del_init(&vb->queue); |
474 | ||
475 | if (!list_empty(&pcdev->capture)) | |
476 | pcdev->active = list_entry(pcdev->capture.next, | |
477 | struct videobuf_buffer, queue); | |
478 | else | |
479 | pcdev->active = NULL; | |
480 | ||
5cf93f1d KM |
481 | vb->state = (sh_mobile_ceu_capture(pcdev) < 0) ? |
482 | VIDEOBUF_ERROR : VIDEOBUF_DONE; | |
0d3244d6 MD |
483 | do_gettimeofday(&vb->ts); |
484 | vb->field_count++; | |
485 | wake_up(&vb->done); | |
cca0e549 GL |
486 | |
487 | out: | |
0d3244d6 MD |
488 | spin_unlock_irqrestore(&pcdev->lock, flags); |
489 | ||
490 | return IRQ_HANDLED; | |
491 | } | |
492 | ||
1c3bb743 | 493 | /* Called with .video_lock held */ |
0d3244d6 MD |
494 | static int sh_mobile_ceu_add_device(struct soc_camera_device *icd) |
495 | { | |
496 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); | |
497 | struct sh_mobile_ceu_dev *pcdev = ici->priv; | |
6ed7c038 | 498 | int ret; |
0d3244d6 | 499 | |
0d3244d6 | 500 | if (pcdev->icd) |
979ea1dd | 501 | return -EBUSY; |
0d3244d6 | 502 | |
0166b743 | 503 | dev_info(icd->dev.parent, |
0d3244d6 MD |
504 | "SuperH Mobile CEU driver attached to camera %d\n", |
505 | icd->devnum); | |
506 | ||
a79aebfc | 507 | pm_runtime_get_sync(ici->v4l2_dev.dev); |
40e2e092 | 508 | |
6ed7c038 GL |
509 | ret = sh_mobile_ceu_soft_reset(pcdev); |
510 | if (!ret) | |
511 | pcdev->icd = icd; | |
979ea1dd | 512 | |
6ed7c038 | 513 | return ret; |
0d3244d6 MD |
514 | } |
515 | ||
1c3bb743 | 516 | /* Called with .video_lock held */ |
0d3244d6 MD |
517 | static void sh_mobile_ceu_remove_device(struct soc_camera_device *icd) |
518 | { | |
519 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); | |
520 | struct sh_mobile_ceu_dev *pcdev = ici->priv; | |
51354cc3 | 521 | unsigned long flags; |
0d3244d6 MD |
522 | |
523 | BUG_ON(icd != pcdev->icd); | |
524 | ||
525 | /* disable capture, disable interrupts */ | |
526 | ceu_write(pcdev, CEIER, 0); | |
b1de7aeb | 527 | sh_mobile_ceu_soft_reset(pcdev); |
51354cc3 MD |
528 | |
529 | /* make sure active buffer is canceled */ | |
530 | spin_lock_irqsave(&pcdev->lock, flags); | |
531 | if (pcdev->active) { | |
532 | list_del(&pcdev->active->queue); | |
533 | pcdev->active->state = VIDEOBUF_ERROR; | |
534 | wake_up_all(&pcdev->active->done); | |
535 | pcdev->active = NULL; | |
536 | } | |
537 | spin_unlock_irqrestore(&pcdev->lock, flags); | |
538 | ||
a79aebfc | 539 | pm_runtime_put_sync(ici->v4l2_dev.dev); |
40e2e092 | 540 | |
0166b743 | 541 | dev_info(icd->dev.parent, |
0d3244d6 MD |
542 | "SuperH Mobile CEU driver detached from camera %d\n", |
543 | icd->devnum); | |
544 | ||
545 | pcdev->icd = NULL; | |
546 | } | |
547 | ||
961801bb GL |
548 | /* |
549 | * See chapter 29.4.12 "Capture Filter Control Register (CFLCR)" | |
550 | * in SH7722 Hardware Manual | |
551 | */ | |
552 | static unsigned int size_dst(unsigned int src, unsigned int scale) | |
553 | { | |
554 | unsigned int mant_pre = scale >> 12; | |
555 | if (!src || !scale) | |
556 | return src; | |
557 | return ((mant_pre + 2 * (src - 1)) / (2 * mant_pre) - 1) * | |
558 | mant_pre * 4096 / scale + 1; | |
559 | } | |
560 | ||
961801bb GL |
561 | static u16 calc_scale(unsigned int src, unsigned int *dst) |
562 | { | |
563 | u16 scale; | |
564 | ||
565 | if (src == *dst) | |
566 | return 0; | |
567 | ||
568 | scale = (src * 4096 / *dst) & ~7; | |
569 | ||
570 | while (scale > 4096 && size_dst(src, scale) < *dst) | |
571 | scale -= 8; | |
572 | ||
573 | *dst = size_dst(src, scale); | |
574 | ||
575 | return scale; | |
576 | } | |
577 | ||
578 | /* rect is guaranteed to not exceed the scaled camera rectangle */ | |
e622681d | 579 | static void sh_mobile_ceu_set_rect(struct soc_camera_device *icd) |
904078f1 GL |
580 | { |
581 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); | |
582 | struct sh_mobile_ceu_cam *cam = icd->host_priv; | |
583 | struct sh_mobile_ceu_dev *pcdev = ici->priv; | |
6a6c8786 GL |
584 | unsigned int height, width, cdwdr_width, in_width, in_height; |
585 | unsigned int left_offset, top_offset; | |
904078f1 GL |
586 | u32 camor; |
587 | ||
e622681d GL |
588 | dev_geo(icd->dev.parent, "Crop %ux%u@%u:%u\n", |
589 | icd->user_width, icd->user_height, cam->ceu_left, cam->ceu_top); | |
904078f1 | 590 | |
e622681d GL |
591 | left_offset = cam->ceu_left; |
592 | top_offset = cam->ceu_top; | |
904078f1 | 593 | |
e622681d | 594 | /* CEU cropping (CFSZR) is applied _after_ the scaling filter (CFLCR) */ |
904078f1 | 595 | if (pcdev->image_mode) { |
e622681d | 596 | in_width = cam->width; |
961801bb | 597 | if (!pcdev->is_16bit) { |
961801bb GL |
598 | in_width *= 2; |
599 | left_offset *= 2; | |
600 | } | |
e622681d GL |
601 | width = icd->user_width; |
602 | cdwdr_width = icd->user_width; | |
904078f1 | 603 | } else { |
e622681d | 604 | int bytes_per_line = soc_mbus_bytes_per_line(icd->user_width, |
760697be GL |
605 | icd->current_fmt->host_fmt); |
606 | unsigned int w_factor; | |
6a6c8786 | 607 | |
e622681d | 608 | width = icd->user_width; |
6a6c8786 | 609 | |
760697be GL |
610 | switch (icd->current_fmt->host_fmt->packing) { |
611 | case SOC_MBUS_PACKING_2X8_PADHI: | |
612 | w_factor = 2; | |
613 | break; | |
614 | default: | |
615 | w_factor = 1; | |
616 | } | |
961801bb | 617 | |
e622681d | 618 | in_width = cam->width * w_factor; |
760697be | 619 | left_offset = left_offset * w_factor; |
961801bb | 620 | |
760697be | 621 | if (bytes_per_line < 0) |
e622681d | 622 | cdwdr_width = icd->user_width; |
760697be GL |
623 | else |
624 | cdwdr_width = bytes_per_line; | |
904078f1 GL |
625 | } |
626 | ||
e622681d GL |
627 | height = icd->user_height; |
628 | in_height = cam->height; | |
1edcc10d | 629 | if (V4L2_FIELD_NONE != pcdev->field) { |
904078f1 | 630 | height /= 2; |
961801bb GL |
631 | in_height /= 2; |
632 | top_offset /= 2; | |
904078f1 GL |
633 | cdwdr_width *= 2; |
634 | } | |
635 | ||
6a6c8786 | 636 | /* Set CAMOR, CAPWR, CFSZR, take care of CDWDR */ |
904078f1 | 637 | camor = left_offset | (top_offset << 16); |
6a6c8786 GL |
638 | |
639 | dev_geo(icd->dev.parent, | |
640 | "CAMOR 0x%x, CAPWR 0x%x, CFSZR 0x%x, CDWDR 0x%x\n", camor, | |
641 | (in_height << 16) | in_width, (height << 16) | width, | |
642 | cdwdr_width); | |
643 | ||
904078f1 | 644 | ceu_write(pcdev, CAMOR, camor); |
961801bb | 645 | ceu_write(pcdev, CAPWR, (in_height << 16) | in_width); |
6a6c8786 | 646 | ceu_write(pcdev, CFSZR, (height << 16) | width); |
904078f1 GL |
647 | ceu_write(pcdev, CDWDR, cdwdr_width); |
648 | } | |
649 | ||
650 | static u32 capture_save_reset(struct sh_mobile_ceu_dev *pcdev) | |
651 | { | |
652 | u32 capsr = ceu_read(pcdev, CAPSR); | |
653 | ceu_write(pcdev, CAPSR, 1 << 16); /* reset, stop capture */ | |
654 | return capsr; | |
655 | } | |
656 | ||
657 | static void capture_restore(struct sh_mobile_ceu_dev *pcdev, u32 capsr) | |
658 | { | |
659 | unsigned long timeout = jiffies + 10 * HZ; | |
660 | ||
661 | /* | |
662 | * Wait until the end of the current frame. It can take a long time, | |
663 | * but if it has been aborted by a CAPSR reset, it shoule exit sooner. | |
664 | */ | |
665 | while ((ceu_read(pcdev, CSTSR) & 1) && time_before(jiffies, timeout)) | |
666 | msleep(1); | |
667 | ||
668 | if (time_after(jiffies, timeout)) { | |
669 | dev_err(pcdev->ici.v4l2_dev.dev, | |
670 | "Timeout waiting for frame end! Interface problem?\n"); | |
671 | return; | |
672 | } | |
673 | ||
674 | /* Wait until reset clears, this shall not hang... */ | |
675 | while (ceu_read(pcdev, CAPSR) & (1 << 16)) | |
676 | udelay(10); | |
677 | ||
678 | /* Anything to restore? */ | |
679 | if (capsr & ~(1 << 16)) | |
680 | ceu_write(pcdev, CAPSR, capsr); | |
681 | } | |
682 | ||
0d3244d6 MD |
683 | static int sh_mobile_ceu_set_bus_param(struct soc_camera_device *icd, |
684 | __u32 pixfmt) | |
685 | { | |
686 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); | |
687 | struct sh_mobile_ceu_dev *pcdev = ici->priv; | |
904078f1 | 688 | int ret; |
0d3244d6 | 689 | unsigned long camera_flags, common_flags, value; |
904078f1 GL |
690 | int yuv_lineskip; |
691 | struct sh_mobile_ceu_cam *cam = icd->host_priv; | |
692 | u32 capsr = capture_save_reset(pcdev); | |
0d3244d6 MD |
693 | |
694 | camera_flags = icd->ops->query_bus_param(icd); | |
695 | common_flags = soc_camera_bus_param_compatible(camera_flags, | |
c354b400 | 696 | make_bus_param(pcdev)); |
0d3244d6 MD |
697 | if (!common_flags) |
698 | return -EINVAL; | |
699 | ||
85dc1cff KM |
700 | /* Make choises, based on platform preferences */ |
701 | if ((common_flags & SOCAM_HSYNC_ACTIVE_HIGH) && | |
702 | (common_flags & SOCAM_HSYNC_ACTIVE_LOW)) { | |
703 | if (pcdev->pdata->flags & SH_CEU_FLAG_HSYNC_LOW) | |
704 | common_flags &= ~SOCAM_HSYNC_ACTIVE_HIGH; | |
705 | else | |
706 | common_flags &= ~SOCAM_HSYNC_ACTIVE_LOW; | |
707 | } | |
708 | ||
709 | if ((common_flags & SOCAM_VSYNC_ACTIVE_HIGH) && | |
710 | (common_flags & SOCAM_VSYNC_ACTIVE_LOW)) { | |
711 | if (pcdev->pdata->flags & SH_CEU_FLAG_VSYNC_LOW) | |
712 | common_flags &= ~SOCAM_VSYNC_ACTIVE_HIGH; | |
713 | else | |
714 | common_flags &= ~SOCAM_VSYNC_ACTIVE_LOW; | |
715 | } | |
716 | ||
0d3244d6 MD |
717 | ret = icd->ops->set_bus_param(icd, common_flags); |
718 | if (ret < 0) | |
719 | return ret; | |
720 | ||
721 | switch (common_flags & SOCAM_DATAWIDTH_MASK) { | |
722 | case SOCAM_DATAWIDTH_8: | |
904078f1 | 723 | pcdev->is_16bit = 0; |
0d3244d6 MD |
724 | break; |
725 | case SOCAM_DATAWIDTH_16: | |
904078f1 | 726 | pcdev->is_16bit = 1; |
0d3244d6 MD |
727 | break; |
728 | default: | |
729 | return -EINVAL; | |
730 | } | |
731 | ||
732 | ceu_write(pcdev, CRCNTR, 0); | |
733 | ceu_write(pcdev, CRCMPR, 0); | |
734 | ||
8be65dc5 | 735 | value = 0x00000010; /* data fetch by default */ |
961801bb | 736 | yuv_lineskip = 0; |
8be65dc5 | 737 | |
760697be | 738 | switch (icd->current_fmt->host_fmt->fourcc) { |
8be65dc5 MD |
739 | case V4L2_PIX_FMT_NV12: |
740 | case V4L2_PIX_FMT_NV21: | |
741 | yuv_lineskip = 1; /* skip for NV12/21, no skip for NV16/61 */ | |
9e4a56d2 MD |
742 | /* fall-through */ |
743 | case V4L2_PIX_FMT_NV16: | |
744 | case V4L2_PIX_FMT_NV61: | |
760697be GL |
745 | switch (cam->code) { |
746 | case V4L2_MBUS_FMT_YUYV8_2X8_BE: | |
8be65dc5 MD |
747 | value = 0x00000000; /* Cb0, Y0, Cr0, Y1 */ |
748 | break; | |
760697be | 749 | case V4L2_MBUS_FMT_YVYU8_2X8_BE: |
8be65dc5 MD |
750 | value = 0x00000100; /* Cr0, Y0, Cb0, Y1 */ |
751 | break; | |
760697be | 752 | case V4L2_MBUS_FMT_YUYV8_2X8_LE: |
8be65dc5 MD |
753 | value = 0x00000200; /* Y0, Cb0, Y1, Cr0 */ |
754 | break; | |
760697be | 755 | case V4L2_MBUS_FMT_YVYU8_2X8_LE: |
8be65dc5 MD |
756 | value = 0x00000300; /* Y0, Cr0, Y1, Cb0 */ |
757 | break; | |
758 | default: | |
759 | BUG(); | |
760 | } | |
761 | } | |
762 | ||
760697be GL |
763 | if (icd->current_fmt->host_fmt->fourcc == V4L2_PIX_FMT_NV21 || |
764 | icd->current_fmt->host_fmt->fourcc == V4L2_PIX_FMT_NV61) | |
9e4a56d2 | 765 | value ^= 0x00000100; /* swap U, V to change from NV1x->NVx1 */ |
8be65dc5 | 766 | |
7a1a8164 MD |
767 | value |= common_flags & SOCAM_VSYNC_ACTIVE_LOW ? 1 << 1 : 0; |
768 | value |= common_flags & SOCAM_HSYNC_ACTIVE_LOW ? 1 << 0 : 0; | |
904078f1 | 769 | value |= pcdev->is_16bit ? 1 << 12 : 0; |
0d3244d6 MD |
770 | ceu_write(pcdev, CAMCR, value); |
771 | ||
772 | ceu_write(pcdev, CAPCR, 0x00300000); | |
1edcc10d KM |
773 | |
774 | switch (pcdev->field) { | |
775 | case V4L2_FIELD_INTERLACED_TB: | |
776 | value = 0x101; | |
777 | break; | |
778 | case V4L2_FIELD_INTERLACED_BT: | |
779 | value = 0x102; | |
780 | break; | |
781 | default: | |
782 | value = 0; | |
783 | break; | |
784 | } | |
785 | ceu_write(pcdev, CAIFR, value); | |
0d3244d6 | 786 | |
e622681d | 787 | sh_mobile_ceu_set_rect(icd); |
0d3244d6 MD |
788 | mdelay(1); |
789 | ||
e622681d | 790 | dev_geo(icd->dev.parent, "CFLCR 0x%x\n", pcdev->cflcr); |
961801bb | 791 | ceu_write(pcdev, CFLCR, pcdev->cflcr); |
dd54203b | 792 | |
5d28d525 GL |
793 | /* |
794 | * A few words about byte order (observed in Big Endian mode) | |
dd54203b MD |
795 | * |
796 | * In data fetch mode bytes are received in chunks of 8 bytes. | |
797 | * D0, D1, D2, D3, D4, D5, D6, D7 (D0 received first) | |
798 | * | |
799 | * The data is however by default written to memory in reverse order: | |
800 | * D7, D6, D5, D4, D3, D2, D1, D0 (D7 written to lowest byte) | |
801 | * | |
802 | * The lowest three bits of CDOCR allows us to do swapping, | |
2c0a072e MD |
803 | * using 7 we swap the data bytes to match the incoming order: |
804 | * D0, D1, D2, D3, D4, D5, D6, D7 | |
dd54203b | 805 | */ |
8be65dc5 MD |
806 | value = 0x00000017; |
807 | if (yuv_lineskip) | |
808 | value &= ~0x00000010; /* convert 4:2:2 -> 4:2:0 */ | |
809 | ||
810 | ceu_write(pcdev, CDOCR, value); | |
0d3244d6 MD |
811 | ceu_write(pcdev, CFWCR, 0); /* keep "datafetch firewall" disabled */ |
812 | ||
6a6c8786 | 813 | dev_dbg(icd->dev.parent, "S_FMT successful for %c%c%c%c %ux%u\n", |
904078f1 GL |
814 | pixfmt & 0xff, (pixfmt >> 8) & 0xff, |
815 | (pixfmt >> 16) & 0xff, (pixfmt >> 24) & 0xff, | |
6a6c8786 | 816 | icd->user_width, icd->user_height); |
904078f1 GL |
817 | |
818 | capture_restore(pcdev, capsr); | |
819 | ||
0d3244d6 | 820 | /* not in bundle mode: skip CBDSR, CDAYR2, CDACR2, CDBYR2, CDBCR2 */ |
0d3244d6 MD |
821 | return 0; |
822 | } | |
823 | ||
760697be GL |
824 | static int sh_mobile_ceu_try_bus_param(struct soc_camera_device *icd, |
825 | unsigned char buswidth) | |
0d3244d6 MD |
826 | { |
827 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); | |
828 | struct sh_mobile_ceu_dev *pcdev = ici->priv; | |
829 | unsigned long camera_flags, common_flags; | |
830 | ||
831 | camera_flags = icd->ops->query_bus_param(icd); | |
832 | common_flags = soc_camera_bus_param_compatible(camera_flags, | |
c354b400 | 833 | make_bus_param(pcdev)); |
760697be GL |
834 | if (!common_flags || buswidth > 16 || |
835 | (buswidth > 8 && !(common_flags & SOCAM_DATAWIDTH_16))) | |
0d3244d6 MD |
836 | return -EINVAL; |
837 | ||
838 | return 0; | |
839 | } | |
840 | ||
760697be | 841 | static const struct soc_mbus_pixelfmt sh_mobile_ceu_formats[] = { |
9e4a56d2 | 842 | { |
760697be GL |
843 | .fourcc = V4L2_PIX_FMT_NV12, |
844 | .name = "NV12", | |
845 | .bits_per_sample = 12, | |
846 | .packing = SOC_MBUS_PACKING_NONE, | |
847 | .order = SOC_MBUS_ORDER_LE, | |
848 | }, { | |
849 | .fourcc = V4L2_PIX_FMT_NV21, | |
850 | .name = "NV21", | |
851 | .bits_per_sample = 12, | |
852 | .packing = SOC_MBUS_PACKING_NONE, | |
853 | .order = SOC_MBUS_ORDER_LE, | |
854 | }, { | |
855 | .fourcc = V4L2_PIX_FMT_NV16, | |
856 | .name = "NV16", | |
857 | .bits_per_sample = 16, | |
858 | .packing = SOC_MBUS_PACKING_NONE, | |
859 | .order = SOC_MBUS_ORDER_LE, | |
860 | }, { | |
861 | .fourcc = V4L2_PIX_FMT_NV61, | |
862 | .name = "NV61", | |
863 | .bits_per_sample = 16, | |
864 | .packing = SOC_MBUS_PACKING_NONE, | |
865 | .order = SOC_MBUS_ORDER_LE, | |
9e4a56d2 | 866 | }, |
8be65dc5 MD |
867 | }; |
868 | ||
760697be GL |
869 | /* This will be corrected as we get more formats */ |
870 | static bool sh_mobile_ceu_packing_supported(const struct soc_mbus_pixelfmt *fmt) | |
871 | { | |
872 | return fmt->packing == SOC_MBUS_PACKING_NONE || | |
873 | (fmt->bits_per_sample == 8 && | |
874 | fmt->packing == SOC_MBUS_PACKING_2X8_PADHI) || | |
875 | (fmt->bits_per_sample > 8 && | |
876 | fmt->packing == SOC_MBUS_PACKING_EXTEND16); | |
877 | } | |
878 | ||
e622681d GL |
879 | static int client_g_rect(struct v4l2_subdev *sd, struct v4l2_rect *rect); |
880 | ||
3805f201 | 881 | static int sh_mobile_ceu_get_formats(struct soc_camera_device *icd, unsigned int idx, |
9414de39 MD |
882 | struct soc_camera_format_xlate *xlate) |
883 | { | |
760697be | 884 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
6a6c8786 | 885 | struct device *dev = icd->dev.parent; |
8be65dc5 | 886 | int ret, k, n; |
9414de39 | 887 | int formats = 0; |
904078f1 | 888 | struct sh_mobile_ceu_cam *cam; |
760697be GL |
889 | enum v4l2_mbus_pixelcode code; |
890 | const struct soc_mbus_pixelfmt *fmt; | |
9414de39 | 891 | |
760697be GL |
892 | ret = v4l2_subdev_call(sd, video, enum_mbus_fmt, idx, &code); |
893 | if (ret < 0) | |
894 | /* No more formats */ | |
895 | return 0; | |
896 | ||
897 | fmt = soc_mbus_get_fmtdesc(code); | |
898 | if (!fmt) { | |
899 | dev_err(icd->dev.parent, | |
3805f201 | 900 | "Invalid format code #%u: %d\n", idx, code); |
760697be GL |
901 | return -EINVAL; |
902 | } | |
903 | ||
904 | ret = sh_mobile_ceu_try_bus_param(icd, fmt->bits_per_sample); | |
9414de39 MD |
905 | if (ret < 0) |
906 | return 0; | |
907 | ||
904078f1 | 908 | if (!icd->host_priv) { |
e622681d GL |
909 | struct v4l2_mbus_framefmt mf; |
910 | struct v4l2_rect rect; | |
911 | struct device *dev = icd->dev.parent; | |
912 | int shift = 0; | |
913 | ||
914 | /* FIXME: subwindow is lost between close / open */ | |
915 | ||
916 | /* Cache current client geometry */ | |
917 | ret = client_g_rect(sd, &rect); | |
918 | if (ret < 0) | |
919 | return ret; | |
920 | ||
921 | /* First time */ | |
922 | ret = v4l2_subdev_call(sd, video, g_mbus_fmt, &mf); | |
923 | if (ret < 0) | |
924 | return ret; | |
925 | ||
926 | while ((mf.width > 2560 || mf.height > 1920) && shift < 4) { | |
927 | /* Try 2560x1920, 1280x960, 640x480, 320x240 */ | |
928 | mf.width = 2560 >> shift; | |
929 | mf.height = 1920 >> shift; | |
930 | ret = v4l2_subdev_call(sd, video, s_mbus_fmt, &mf); | |
931 | if (ret < 0) | |
932 | return ret; | |
933 | shift++; | |
934 | } | |
935 | ||
936 | if (shift == 4) { | |
937 | dev_err(dev, "Failed to configure the client below %ux%x\n", | |
938 | mf.width, mf.height); | |
939 | return -EIO; | |
940 | } | |
941 | ||
942 | dev_geo(dev, "camera fmt %ux%u\n", mf.width, mf.height); | |
943 | ||
904078f1 GL |
944 | cam = kzalloc(sizeof(*cam), GFP_KERNEL); |
945 | if (!cam) | |
946 | return -ENOMEM; | |
947 | ||
e622681d GL |
948 | /* We are called with current camera crop, initialise subrect with it */ |
949 | cam->rect = rect; | |
950 | cam->subrect = rect; | |
951 | ||
952 | cam->width = mf.width; | |
953 | cam->height = mf.height; | |
954 | ||
955 | cam->width = mf.width; | |
956 | cam->height = mf.height; | |
957 | ||
904078f1 GL |
958 | icd->host_priv = cam; |
959 | } else { | |
960 | cam = icd->host_priv; | |
961 | } | |
962 | ||
c8329acc GL |
963 | /* Beginning of a pass */ |
964 | if (!idx) | |
904078f1 | 965 | cam->extra_fmt = NULL; |
c8329acc | 966 | |
760697be GL |
967 | switch (code) { |
968 | case V4L2_MBUS_FMT_YUYV8_2X8_BE: | |
969 | case V4L2_MBUS_FMT_YVYU8_2X8_BE: | |
970 | case V4L2_MBUS_FMT_YUYV8_2X8_LE: | |
971 | case V4L2_MBUS_FMT_YVYU8_2X8_LE: | |
904078f1 | 972 | if (cam->extra_fmt) |
760697be | 973 | break; |
c8329acc GL |
974 | |
975 | /* | |
976 | * Our case is simple so far: for any of the above four camera | |
977 | * formats we add all our four synthesized NV* formats, so, | |
978 | * just marking the device with a single flag suffices. If | |
979 | * the format generation rules are more complex, you would have | |
980 | * to actually hang your already added / counted formats onto | |
981 | * the host_priv pointer and check whether the format you're | |
982 | * going to add now is already there. | |
983 | */ | |
760697be | 984 | cam->extra_fmt = sh_mobile_ceu_formats; |
c8329acc | 985 | |
8be65dc5 MD |
986 | n = ARRAY_SIZE(sh_mobile_ceu_formats); |
987 | formats += n; | |
988 | for (k = 0; xlate && k < n; k++) { | |
760697be GL |
989 | xlate->host_fmt = &sh_mobile_ceu_formats[k]; |
990 | xlate->code = code; | |
8be65dc5 | 991 | xlate++; |
760697be GL |
992 | dev_dbg(dev, "Providing format %s using code %d\n", |
993 | sh_mobile_ceu_formats[k].name, code); | |
8be65dc5 | 994 | } |
760697be | 995 | break; |
9414de39 | 996 | default: |
760697be GL |
997 | if (!sh_mobile_ceu_packing_supported(fmt)) |
998 | return 0; | |
999 | } | |
1000 | ||
1001 | /* Generic pass-through */ | |
1002 | formats++; | |
1003 | if (xlate) { | |
1004 | xlate->host_fmt = fmt; | |
1005 | xlate->code = code; | |
1006 | xlate++; | |
1007 | dev_dbg(dev, "Providing format %s in pass-through mode\n", | |
1008 | xlate->host_fmt->name); | |
9414de39 MD |
1009 | } |
1010 | ||
1011 | return formats; | |
1012 | } | |
1013 | ||
904078f1 GL |
1014 | static void sh_mobile_ceu_put_formats(struct soc_camera_device *icd) |
1015 | { | |
1016 | kfree(icd->host_priv); | |
1017 | icd->host_priv = NULL; | |
1018 | } | |
1019 | ||
961801bb | 1020 | /* Check if any dimension of r1 is smaller than respective one of r2 */ |
904078f1 GL |
1021 | static bool is_smaller(struct v4l2_rect *r1, struct v4l2_rect *r2) |
1022 | { | |
1023 | return r1->width < r2->width || r1->height < r2->height; | |
1024 | } | |
1025 | ||
961801bb GL |
1026 | /* Check if r1 fails to cover r2 */ |
1027 | static bool is_inside(struct v4l2_rect *r1, struct v4l2_rect *r2) | |
1028 | { | |
1029 | return r1->left > r2->left || r1->top > r2->top || | |
1030 | r1->left + r1->width < r2->left + r2->width || | |
1031 | r1->top + r1->height < r2->top + r2->height; | |
1032 | } | |
1033 | ||
6a6c8786 GL |
1034 | static unsigned int scale_down(unsigned int size, unsigned int scale) |
1035 | { | |
1036 | return (size * 4096 + scale / 2) / scale; | |
1037 | } | |
1038 | ||
6a6c8786 GL |
1039 | static unsigned int calc_generic_scale(unsigned int input, unsigned int output) |
1040 | { | |
1041 | return (input * 4096 + output / 2) / output; | |
1042 | } | |
1043 | ||
e622681d | 1044 | /* Get and store current client crop */ |
6a6c8786 GL |
1045 | static int client_g_rect(struct v4l2_subdev *sd, struct v4l2_rect *rect) |
1046 | { | |
1047 | struct v4l2_crop crop; | |
1048 | struct v4l2_cropcap cap; | |
1049 | int ret; | |
1050 | ||
1051 | crop.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; | |
1052 | ||
1053 | ret = v4l2_subdev_call(sd, video, g_crop, &crop); | |
1054 | if (!ret) { | |
1055 | *rect = crop.c; | |
1056 | return ret; | |
1057 | } | |
1058 | ||
1059 | /* Camera driver doesn't support .g_crop(), assume default rectangle */ | |
1060 | cap.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; | |
1061 | ||
1062 | ret = v4l2_subdev_call(sd, video, cropcap, &cap); | |
e622681d GL |
1063 | if (!ret) |
1064 | *rect = cap.defrect; | |
6a6c8786 GL |
1065 | |
1066 | return ret; | |
1067 | } | |
1068 | ||
e622681d GL |
1069 | /* Client crop has changed, update our sub-rectangle to remain within the area */ |
1070 | static void update_subrect(struct sh_mobile_ceu_cam *cam) | |
1071 | { | |
1072 | struct v4l2_rect *rect = &cam->rect, *subrect = &cam->subrect; | |
1073 | ||
1074 | if (rect->width < subrect->width) | |
1075 | subrect->width = rect->width; | |
1076 | ||
1077 | if (rect->height < subrect->height) | |
1078 | subrect->height = rect->height; | |
1079 | ||
1080 | if (rect->left > subrect->left) | |
1081 | subrect->left = rect->left; | |
1082 | else if (rect->left + rect->width > | |
1083 | subrect->left + subrect->width) | |
1084 | subrect->left = rect->left + rect->width - | |
1085 | subrect->width; | |
1086 | ||
1087 | if (rect->top > subrect->top) | |
1088 | subrect->top = rect->top; | |
1089 | else if (rect->top + rect->height > | |
1090 | subrect->top + subrect->height) | |
1091 | subrect->top = rect->top + rect->height - | |
1092 | subrect->height; | |
1093 | } | |
1094 | ||
961801bb | 1095 | /* |
6a6c8786 | 1096 | * The common for both scaling and cropping iterative approach is: |
961801bb GL |
1097 | * 1. try if the client can produce exactly what requested by the user |
1098 | * 2. if (1) failed, try to double the client image until we get one big enough | |
1099 | * 3. if (2) failed, try to request the maximum image | |
1100 | */ | |
e622681d | 1101 | static int client_s_crop(struct soc_camera_device *icd, struct v4l2_crop *crop, |
6a6c8786 | 1102 | struct v4l2_crop *cam_crop) |
09e231b3 | 1103 | { |
e622681d | 1104 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
6a6c8786 GL |
1105 | struct v4l2_rect *rect = &crop->c, *cam_rect = &cam_crop->c; |
1106 | struct device *dev = sd->v4l2_dev->dev; | |
e622681d | 1107 | struct sh_mobile_ceu_cam *cam = icd->host_priv; |
6a6c8786 | 1108 | struct v4l2_cropcap cap; |
904078f1 | 1109 | int ret; |
6a6c8786 | 1110 | unsigned int width, height; |
904078f1 | 1111 | |
6a6c8786 GL |
1112 | v4l2_subdev_call(sd, video, s_crop, crop); |
1113 | ret = client_g_rect(sd, cam_rect); | |
1114 | if (ret < 0) | |
1115 | return ret; | |
961801bb | 1116 | |
6a6c8786 GL |
1117 | /* |
1118 | * Now cam_crop contains the current camera input rectangle, and it must | |
1119 | * be within camera cropcap bounds | |
1120 | */ | |
1121 | if (!memcmp(rect, cam_rect, sizeof(*rect))) { | |
1122 | /* Even if camera S_CROP failed, but camera rectangle matches */ | |
e26b3144 | 1123 | dev_dbg(dev, "Camera S_CROP successful for %dx%d@%d:%d\n", |
6a6c8786 | 1124 | rect->width, rect->height, rect->left, rect->top); |
e622681d | 1125 | cam->rect = *cam_rect; |
6a6c8786 | 1126 | return 0; |
904078f1 GL |
1127 | } |
1128 | ||
6a6c8786 | 1129 | /* Try to fix cropping, that camera hasn't managed to set */ |
e26b3144 | 1130 | dev_geo(dev, "Fix camera S_CROP for %dx%d@%d:%d to %dx%d@%d:%d\n", |
6a6c8786 | 1131 | cam_rect->width, cam_rect->height, |
08590b96 | 1132 | cam_rect->left, cam_rect->top, |
6a6c8786 GL |
1133 | rect->width, rect->height, rect->left, rect->top); |
1134 | ||
1135 | /* We need sensor maximum rectangle */ | |
1136 | ret = v4l2_subdev_call(sd, video, cropcap, &cap); | |
1137 | if (ret < 0) | |
1138 | return ret; | |
1139 | ||
e622681d | 1140 | /* Put user requested rectangle within sensor bounds */ |
6a6c8786 GL |
1141 | soc_camera_limit_side(&rect->left, &rect->width, cap.bounds.left, 2, |
1142 | cap.bounds.width); | |
1143 | soc_camera_limit_side(&rect->top, &rect->height, cap.bounds.top, 4, | |
1144 | cap.bounds.height); | |
904078f1 GL |
1145 | |
1146 | /* | |
1147 | * Popular special case - some cameras can only handle fixed sizes like | |
1148 | * QVGA, VGA,... Take care to avoid infinite loop. | |
1149 | */ | |
6a6c8786 GL |
1150 | width = max(cam_rect->width, 2); |
1151 | height = max(cam_rect->height, 2); | |
1152 | ||
e622681d GL |
1153 | /* |
1154 | * Loop as long as sensor is not covering the requested rectangle and | |
1155 | * is still within its bounds | |
1156 | */ | |
6a6c8786 GL |
1157 | while (!ret && (is_smaller(cam_rect, rect) || |
1158 | is_inside(cam_rect, rect)) && | |
1159 | (cap.bounds.width > width || cap.bounds.height > height)) { | |
961801bb GL |
1160 | |
1161 | width *= 2; | |
1162 | height *= 2; | |
6a6c8786 | 1163 | |
08590b96 GL |
1164 | cam_rect->width = width; |
1165 | cam_rect->height = height; | |
904078f1 | 1166 | |
6a6c8786 GL |
1167 | /* |
1168 | * We do not know what capabilities the camera has to set up | |
1169 | * left and top borders. We could try to be smarter in iterating | |
1170 | * them, e.g., if camera current left is to the right of the | |
1171 | * target left, set it to the middle point between the current | |
1172 | * left and minimum left. But that would add too much | |
1173 | * complexity: we would have to iterate each border separately. | |
e622681d | 1174 | * Instead we just drop to the left and top bounds. |
6a6c8786 GL |
1175 | */ |
1176 | if (cam_rect->left > rect->left) | |
1177 | cam_rect->left = cap.bounds.left; | |
961801bb | 1178 | |
6a6c8786 GL |
1179 | if (cam_rect->left + cam_rect->width < rect->left + rect->width) |
1180 | cam_rect->width = rect->left + rect->width - | |
08590b96 | 1181 | cam_rect->left; |
961801bb | 1182 | |
6a6c8786 GL |
1183 | if (cam_rect->top > rect->top) |
1184 | cam_rect->top = cap.bounds.top; | |
961801bb | 1185 | |
6a6c8786 GL |
1186 | if (cam_rect->top + cam_rect->height < rect->top + rect->height) |
1187 | cam_rect->height = rect->top + rect->height - | |
08590b96 | 1188 | cam_rect->top; |
961801bb | 1189 | |
6a6c8786 GL |
1190 | v4l2_subdev_call(sd, video, s_crop, cam_crop); |
1191 | ret = client_g_rect(sd, cam_rect); | |
e26b3144 | 1192 | dev_geo(dev, "Camera S_CROP %d for %dx%d@%d:%d\n", ret, |
6a6c8786 | 1193 | cam_rect->width, cam_rect->height, |
08590b96 | 1194 | cam_rect->left, cam_rect->top); |
904078f1 GL |
1195 | } |
1196 | ||
6a6c8786 GL |
1197 | /* S_CROP must not modify the rectangle */ |
1198 | if (is_smaller(cam_rect, rect) || is_inside(cam_rect, rect)) { | |
904078f1 GL |
1199 | /* |
1200 | * The camera failed to configure a suitable cropping, | |
1201 | * we cannot use the current rectangle, set to max | |
1202 | */ | |
6a6c8786 GL |
1203 | *cam_rect = cap.bounds; |
1204 | v4l2_subdev_call(sd, video, s_crop, cam_crop); | |
1205 | ret = client_g_rect(sd, cam_rect); | |
e26b3144 | 1206 | dev_geo(dev, "Camera S_CROP %d for max %dx%d@%d:%d\n", ret, |
6a6c8786 | 1207 | cam_rect->width, cam_rect->height, |
08590b96 | 1208 | cam_rect->left, cam_rect->top); |
904078f1 GL |
1209 | } |
1210 | ||
e622681d GL |
1211 | if (!ret) { |
1212 | cam->rect = *cam_rect; | |
1213 | update_subrect(cam); | |
6a6c8786 GL |
1214 | } |
1215 | ||
e622681d | 1216 | return ret; |
6a6c8786 GL |
1217 | } |
1218 | ||
e622681d | 1219 | /* Iterative s_mbus_fmt, also updates cached client crop on success */ |
760697be GL |
1220 | static int client_s_fmt(struct soc_camera_device *icd, |
1221 | struct v4l2_mbus_framefmt *mf, bool ceu_can_scale) | |
6a6c8786 | 1222 | { |
e622681d | 1223 | struct sh_mobile_ceu_cam *cam = icd->host_priv; |
6a6c8786 GL |
1224 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
1225 | struct device *dev = icd->dev.parent; | |
760697be | 1226 | unsigned int width = mf->width, height = mf->height, tmp_w, tmp_h; |
6a6c8786 GL |
1227 | unsigned int max_width, max_height; |
1228 | struct v4l2_cropcap cap; | |
1229 | int ret; | |
1230 | ||
e622681d GL |
1231 | ret = v4l2_subdev_call(sd, video, s_mbus_fmt, mf); |
1232 | if (ret < 0) | |
1233 | return ret; | |
1234 | ||
1235 | dev_geo(dev, "camera scaled to %ux%u\n", mf->width, mf->height); | |
1236 | ||
1237 | if ((width == mf->width && height == mf->height) || !ceu_can_scale) | |
1238 | goto update_cache; | |
1239 | ||
6a6c8786 GL |
1240 | cap.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; |
1241 | ||
1242 | ret = v4l2_subdev_call(sd, video, cropcap, &cap); | |
1243 | if (ret < 0) | |
1244 | return ret; | |
1245 | ||
1246 | max_width = min(cap.bounds.width, 2560); | |
1247 | max_height = min(cap.bounds.height, 1920); | |
1248 | ||
6a6c8786 | 1249 | /* Camera set a format, but geometry is not precise, try to improve */ |
760697be GL |
1250 | tmp_w = mf->width; |
1251 | tmp_h = mf->height; | |
6a6c8786 GL |
1252 | |
1253 | /* width <= max_width && height <= max_height - guaranteed by try_fmt */ | |
1254 | while ((width > tmp_w || height > tmp_h) && | |
1255 | tmp_w < max_width && tmp_h < max_height) { | |
1256 | tmp_w = min(2 * tmp_w, max_width); | |
1257 | tmp_h = min(2 * tmp_h, max_height); | |
760697be GL |
1258 | mf->width = tmp_w; |
1259 | mf->height = tmp_h; | |
1260 | ret = v4l2_subdev_call(sd, video, s_mbus_fmt, mf); | |
6a6c8786 | 1261 | dev_geo(dev, "Camera scaled to %ux%u\n", |
760697be | 1262 | mf->width, mf->height); |
6a6c8786 GL |
1263 | if (ret < 0) { |
1264 | /* This shouldn't happen */ | |
1265 | dev_err(dev, "Client failed to set format: %d\n", ret); | |
1266 | return ret; | |
1267 | } | |
1268 | } | |
1269 | ||
e622681d GL |
1270 | update_cache: |
1271 | /* Update cache */ | |
1272 | ret = client_g_rect(sd, &cam->rect); | |
1273 | if (ret < 0) | |
1274 | return ret; | |
1275 | ||
1276 | update_subrect(cam); | |
1277 | ||
6a6c8786 GL |
1278 | return 0; |
1279 | } | |
1280 | ||
1281 | /** | |
e622681d GL |
1282 | * @width - on output: user width, mapped back to input |
1283 | * @height - on output: user height, mapped back to input | |
1284 | * @mf - in- / output camera output window | |
6a6c8786 | 1285 | */ |
e622681d GL |
1286 | static int client_scale(struct soc_camera_device *icd, |
1287 | struct v4l2_mbus_framefmt *mf, | |
1288 | unsigned int *width, unsigned int *height, | |
1289 | bool ceu_can_scale) | |
6a6c8786 | 1290 | { |
6a6c8786 GL |
1291 | struct sh_mobile_ceu_cam *cam = icd->host_priv; |
1292 | struct device *dev = icd->dev.parent; | |
760697be | 1293 | struct v4l2_mbus_framefmt mf_tmp = *mf; |
6a6c8786 GL |
1294 | unsigned int scale_h, scale_v; |
1295 | int ret; | |
1296 | ||
e622681d GL |
1297 | /* |
1298 | * 5. Apply iterative camera S_FMT for camera user window (also updates | |
1299 | * client crop cache and the imaginary sub-rectangle). | |
1300 | */ | |
760697be | 1301 | ret = client_s_fmt(icd, &mf_tmp, ceu_can_scale); |
6a6c8786 GL |
1302 | if (ret < 0) |
1303 | return ret; | |
1304 | ||
1305 | dev_geo(dev, "5: camera scaled to %ux%u\n", | |
760697be | 1306 | mf_tmp.width, mf_tmp.height); |
6a6c8786 GL |
1307 | |
1308 | /* 6. Retrieve camera output window (g_fmt) */ | |
1309 | ||
760697be | 1310 | /* unneeded - it is already in "mf_tmp" */ |
6a6c8786 | 1311 | |
e622681d GL |
1312 | /* 7. Calculate new client scales. */ |
1313 | scale_h = calc_generic_scale(cam->rect.width, mf_tmp.width); | |
1314 | scale_v = calc_generic_scale(cam->rect.height, mf_tmp.height); | |
6a6c8786 | 1315 | |
760697be GL |
1316 | mf->width = mf_tmp.width; |
1317 | mf->height = mf_tmp.height; | |
1318 | mf->colorspace = mf_tmp.colorspace; | |
904078f1 GL |
1319 | |
1320 | /* | |
6a6c8786 | 1321 | * 8. Calculate new CEU crop - apply camera scales to previously |
e622681d | 1322 | * updated "effective" crop. |
904078f1 | 1323 | */ |
e622681d GL |
1324 | *width = scale_down(cam->subrect.width, scale_h); |
1325 | *height = scale_down(cam->subrect.height, scale_v); | |
6a6c8786 | 1326 | |
e622681d | 1327 | dev_geo(dev, "8: new client sub-window %ux%u\n", *width, *height); |
6a6c8786 GL |
1328 | |
1329 | return 0; | |
1330 | } | |
1331 | ||
1332 | /* | |
1333 | * CEU can scale and crop, but we don't want to waste bandwidth and kill the | |
1334 | * framerate by always requesting the maximum image from the client. See | |
1335 | * Documentation/video4linux/sh_mobile_camera_ceu.txt for a description of | |
1336 | * scaling and cropping algorithms and for the meaning of referenced here steps. | |
1337 | */ | |
1338 | static int sh_mobile_ceu_set_crop(struct soc_camera_device *icd, | |
1339 | struct v4l2_crop *a) | |
1340 | { | |
1341 | struct v4l2_rect *rect = &a->c; | |
1342 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); | |
1343 | struct sh_mobile_ceu_dev *pcdev = ici->priv; | |
1344 | struct v4l2_crop cam_crop; | |
1345 | struct sh_mobile_ceu_cam *cam = icd->host_priv; | |
e622681d | 1346 | struct v4l2_rect *cam_rect = &cam_crop.c; |
6a6c8786 GL |
1347 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
1348 | struct device *dev = icd->dev.parent; | |
760697be | 1349 | struct v4l2_mbus_framefmt mf; |
e622681d GL |
1350 | unsigned int scale_cam_h, scale_cam_v, scale_ceu_h, scale_ceu_v, |
1351 | out_width, out_height, scale_h, scale_v; | |
1352 | int interm_width, interm_height; | |
6a6c8786 GL |
1353 | u32 capsr, cflcr; |
1354 | int ret; | |
1355 | ||
e622681d GL |
1356 | dev_geo(dev, "S_CROP(%ux%u@%u:%u)\n", rect->width, rect->height, |
1357 | rect->left, rect->top); | |
6a6c8786 | 1358 | |
e622681d GL |
1359 | /* During camera cropping its output window can change too, stop CEU */ |
1360 | capsr = capture_save_reset(pcdev); | |
1361 | dev_dbg(dev, "CAPSR 0x%x, CFLCR 0x%x\n", capsr, pcdev->cflcr); | |
6a6c8786 | 1362 | |
e622681d GL |
1363 | /* 1. - 2. Apply iterative camera S_CROP for new input window. */ |
1364 | ret = client_s_crop(icd, a, &cam_crop); | |
6a6c8786 GL |
1365 | if (ret < 0) |
1366 | return ret; | |
1367 | ||
e622681d | 1368 | dev_geo(dev, "1-2: camera cropped to %ux%u@%u:%u\n", |
6a6c8786 GL |
1369 | cam_rect->width, cam_rect->height, |
1370 | cam_rect->left, cam_rect->top); | |
1371 | ||
1372 | /* On success cam_crop contains current camera crop */ | |
1373 | ||
e622681d GL |
1374 | /* 3. Retrieve camera output window */ |
1375 | ret = v4l2_subdev_call(sd, video, g_mbus_fmt, &mf); | |
1376 | if (ret < 0) | |
1377 | return ret; | |
6a6c8786 | 1378 | |
e622681d GL |
1379 | if (mf.width > 2560 || mf.height > 1920) |
1380 | return -EINVAL; | |
6a6c8786 | 1381 | |
e622681d GL |
1382 | /* Cache camera output window */ |
1383 | cam->width = mf.width; | |
1384 | cam->height = mf.height; | |
6a6c8786 | 1385 | |
e622681d GL |
1386 | /* 4. Calculate camera scales */ |
1387 | scale_cam_h = calc_generic_scale(cam_rect->width, mf.width); | |
1388 | scale_cam_v = calc_generic_scale(cam_rect->height, mf.height); | |
6a6c8786 | 1389 | |
e622681d GL |
1390 | /* Calculate intermediate window */ |
1391 | interm_width = scale_down(rect->width, scale_cam_h); | |
1392 | interm_height = scale_down(rect->height, scale_cam_v); | |
6a6c8786 | 1393 | |
e622681d GL |
1394 | if (pcdev->image_mode) { |
1395 | out_width = min(interm_width, icd->user_width); | |
1396 | out_height = min(interm_height, icd->user_height); | |
1397 | } else { | |
1398 | out_width = interm_width; | |
1399 | out_height = interm_height; | |
1400 | } | |
6a6c8786 GL |
1401 | |
1402 | /* | |
e622681d GL |
1403 | * 5. Calculate CEU scales from camera scales from results of (5) and |
1404 | * the user window | |
6a6c8786 | 1405 | */ |
e622681d GL |
1406 | scale_ceu_h = calc_scale(interm_width, &out_width); |
1407 | scale_ceu_v = calc_scale(interm_height, &out_height); | |
6a6c8786 | 1408 | |
e622681d GL |
1409 | /* Calculate camera scales */ |
1410 | scale_h = calc_generic_scale(cam_rect->width, out_width); | |
1411 | scale_v = calc_generic_scale(cam_rect->height, out_height); | |
6a6c8786 | 1412 | |
e622681d GL |
1413 | dev_geo(dev, "5: CEU scales %u:%u\n", scale_ceu_h, scale_ceu_v); |
1414 | ||
1415 | /* Apply CEU scales. */ | |
6a6c8786 GL |
1416 | cflcr = scale_ceu_h | (scale_ceu_v << 16); |
1417 | if (cflcr != pcdev->cflcr) { | |
1418 | pcdev->cflcr = cflcr; | |
1419 | ceu_write(pcdev, CFLCR, cflcr); | |
1420 | } | |
1421 | ||
e622681d GL |
1422 | icd->user_width = out_width; |
1423 | icd->user_height = out_height; | |
1424 | cam->ceu_left = scale_down(rect->left - cam_rect->left, scale_h) & ~1; | |
1425 | cam->ceu_top = scale_down(rect->top - cam_rect->top, scale_v) & ~1; | |
1426 | ||
1427 | /* 6. Use CEU cropping to crop to the new window. */ | |
1428 | sh_mobile_ceu_set_rect(icd); | |
1429 | ||
1430 | cam->subrect = *rect; | |
1431 | ||
1432 | dev_geo(dev, "6: CEU cropped to %ux%u@%u:%u\n", | |
1433 | icd->user_width, icd->user_height, | |
1434 | cam->ceu_left, cam->ceu_top); | |
1435 | ||
6a6c8786 | 1436 | /* Restore capture */ |
904078f1 GL |
1437 | if (pcdev->active) |
1438 | capsr |= 1; | |
904078f1 GL |
1439 | capture_restore(pcdev, capsr); |
1440 | ||
904078f1 GL |
1441 | /* Even if only camera cropping succeeded */ |
1442 | return ret; | |
09e231b3 GL |
1443 | } |
1444 | ||
e622681d GL |
1445 | static int sh_mobile_ceu_get_crop(struct soc_camera_device *icd, |
1446 | struct v4l2_crop *a) | |
1447 | { | |
1448 | struct sh_mobile_ceu_cam *cam = icd->host_priv; | |
1449 | ||
1450 | a->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; | |
1451 | a->c = cam->subrect; | |
1452 | ||
1453 | return 0; | |
1454 | } | |
1455 | ||
1456 | /* | |
1457 | * Calculate real client output window by applying new scales to the current | |
1458 | * client crop. New scales are calculated from the requested output format and | |
1459 | * CEU crop, mapped backed onto the client input (subrect). | |
1460 | */ | |
1461 | static void calculate_client_output(struct soc_camera_device *icd, | |
1462 | struct v4l2_pix_format *pix, struct v4l2_mbus_framefmt *mf) | |
1463 | { | |
1464 | struct sh_mobile_ceu_cam *cam = icd->host_priv; | |
1465 | struct device *dev = icd->dev.parent; | |
1466 | struct v4l2_rect *cam_subrect = &cam->subrect; | |
1467 | unsigned int scale_v, scale_h; | |
1468 | ||
1469 | if (cam_subrect->width == cam->rect.width && | |
1470 | cam_subrect->height == cam->rect.height) { | |
1471 | /* No sub-cropping */ | |
1472 | mf->width = pix->width; | |
1473 | mf->height = pix->height; | |
1474 | return; | |
1475 | } | |
1476 | ||
1477 | /* 1.-2. Current camera scales and subwin - cached. */ | |
1478 | ||
1479 | dev_geo(dev, "2: subwin %ux%u@%u:%u\n", | |
1480 | cam_subrect->width, cam_subrect->height, | |
1481 | cam_subrect->left, cam_subrect->top); | |
1482 | ||
1483 | /* | |
1484 | * 3. Calculate new combined scales from input sub-window to requested | |
1485 | * user window. | |
1486 | */ | |
1487 | ||
1488 | /* | |
1489 | * TODO: CEU cannot scale images larger than VGA to smaller than SubQCIF | |
1490 | * (128x96) or larger than VGA | |
1491 | */ | |
1492 | scale_h = calc_generic_scale(cam_subrect->width, pix->width); | |
1493 | scale_v = calc_generic_scale(cam_subrect->height, pix->height); | |
1494 | ||
1495 | dev_geo(dev, "3: scales %u:%u\n", scale_h, scale_v); | |
1496 | ||
1497 | /* | |
1498 | * 4. Calculate client output window by applying combined scales to real | |
1499 | * input window. | |
1500 | */ | |
1501 | mf->width = scale_down(cam->rect.width, scale_h); | |
1502 | mf->height = scale_down(cam->rect.height, scale_v); | |
1503 | } | |
1504 | ||
961801bb | 1505 | /* Similar to set_crop multistage iterative algorithm */ |
d8fac217 | 1506 | static int sh_mobile_ceu_set_fmt(struct soc_camera_device *icd, |
09e231b3 | 1507 | struct v4l2_format *f) |
0d3244d6 | 1508 | { |
9414de39 | 1509 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); |
961801bb | 1510 | struct sh_mobile_ceu_dev *pcdev = ici->priv; |
904078f1 GL |
1511 | struct sh_mobile_ceu_cam *cam = icd->host_priv; |
1512 | struct v4l2_pix_format *pix = &f->fmt.pix; | |
760697be | 1513 | struct v4l2_mbus_framefmt mf; |
6a6c8786 | 1514 | struct device *dev = icd->dev.parent; |
904078f1 | 1515 | __u32 pixfmt = pix->pixelformat; |
9414de39 | 1516 | const struct soc_camera_format_xlate *xlate; |
e622681d | 1517 | unsigned int ceu_sub_width, ceu_sub_height; |
6a6c8786 GL |
1518 | u16 scale_v, scale_h; |
1519 | int ret; | |
1edcc10d KM |
1520 | bool image_mode; |
1521 | enum v4l2_field field; | |
961801bb | 1522 | |
e622681d GL |
1523 | dev_geo(dev, "S_FMT(pix=0x%x, %ux%u)\n", pixfmt, pix->width, pix->height); |
1524 | ||
961801bb | 1525 | switch (pix->field) { |
961801bb GL |
1526 | default: |
1527 | pix->field = V4L2_FIELD_NONE; | |
1528 | /* fall-through */ | |
1edcc10d KM |
1529 | case V4L2_FIELD_INTERLACED_TB: |
1530 | case V4L2_FIELD_INTERLACED_BT: | |
961801bb | 1531 | case V4L2_FIELD_NONE: |
1edcc10d KM |
1532 | field = pix->field; |
1533 | break; | |
1534 | case V4L2_FIELD_INTERLACED: | |
1535 | field = V4L2_FIELD_INTERLACED_TB; | |
961801bb GL |
1536 | break; |
1537 | } | |
25c4d74e | 1538 | |
9414de39 MD |
1539 | xlate = soc_camera_xlate_by_fourcc(icd, pixfmt); |
1540 | if (!xlate) { | |
6a6c8786 | 1541 | dev_warn(dev, "Format %x not found\n", pixfmt); |
9414de39 | 1542 | return -EINVAL; |
25c4d74e GL |
1543 | } |
1544 | ||
e622681d GL |
1545 | /* 1.-4. Calculate client output geometry */ |
1546 | calculate_client_output(icd, &f->fmt.pix, &mf); | |
760697be GL |
1547 | mf.field = pix->field; |
1548 | mf.colorspace = pix->colorspace; | |
1549 | mf.code = xlate->code; | |
6a6c8786 | 1550 | |
961801bb GL |
1551 | switch (pixfmt) { |
1552 | case V4L2_PIX_FMT_NV12: | |
1553 | case V4L2_PIX_FMT_NV21: | |
1554 | case V4L2_PIX_FMT_NV16: | |
1555 | case V4L2_PIX_FMT_NV61: | |
6a6c8786 | 1556 | image_mode = true; |
961801bb GL |
1557 | break; |
1558 | default: | |
6a6c8786 | 1559 | image_mode = false; |
9414de39 | 1560 | } |
25c4d74e | 1561 | |
e622681d | 1562 | dev_geo(dev, "4: request camera output %ux%u\n", mf.width, mf.height); |
961801bb | 1563 | |
6a6c8786 | 1564 | /* 5. - 9. */ |
e622681d | 1565 | ret = client_scale(icd, &mf, &ceu_sub_width, &ceu_sub_height, |
1edcc10d | 1566 | image_mode && V4L2_FIELD_NONE == field); |
6a6c8786 | 1567 | |
e622681d | 1568 | dev_geo(dev, "5-9: client scale return %d\n", ret); |
6a6c8786 GL |
1569 | |
1570 | /* Done with the camera. Now see if we can improve the result */ | |
1571 | ||
e622681d | 1572 | dev_geo(dev, "Camera %d fmt %ux%u, requested %ux%u\n", |
760697be | 1573 | ret, mf.width, mf.height, pix->width, pix->height); |
6a6c8786 GL |
1574 | if (ret < 0) |
1575 | return ret; | |
1576 | ||
760697be GL |
1577 | if (mf.code != xlate->code) |
1578 | return -EINVAL; | |
1579 | ||
e622681d GL |
1580 | /* 9. Prepare CEU crop */ |
1581 | cam->width = mf.width; | |
1582 | cam->height = mf.height; | |
1583 | ||
6a6c8786 | 1584 | /* 10. Use CEU scaling to scale to the requested user window. */ |
961801bb GL |
1585 | |
1586 | /* We cannot scale up */ | |
e622681d GL |
1587 | if (pix->width > ceu_sub_width) |
1588 | ceu_sub_width = pix->width; | |
961801bb | 1589 | |
e622681d GL |
1590 | if (pix->height > ceu_sub_height) |
1591 | ceu_sub_height = pix->height; | |
961801bb | 1592 | |
760697be GL |
1593 | pix->colorspace = mf.colorspace; |
1594 | ||
1595 | if (image_mode) { | |
1596 | /* Scale pix->{width x height} down to width x height */ | |
e622681d GL |
1597 | scale_h = calc_scale(ceu_sub_width, &pix->width); |
1598 | scale_v = calc_scale(ceu_sub_height, &pix->height); | |
760697be | 1599 | } else { |
e622681d GL |
1600 | pix->width = ceu_sub_width; |
1601 | pix->height = ceu_sub_height; | |
1602 | scale_h = 0; | |
1603 | scale_v = 0; | |
760697be | 1604 | } |
961801bb | 1605 | |
e622681d GL |
1606 | pcdev->cflcr = scale_h | (scale_v << 16); |
1607 | ||
1608 | /* | |
1609 | * We have calculated CFLCR, the actual configuration will be performed | |
1610 | * in sh_mobile_ceu_set_bus_param() | |
1611 | */ | |
1612 | ||
6a6c8786 | 1613 | dev_geo(dev, "10: W: %u : 0x%x = %u, H: %u : 0x%x = %u\n", |
e622681d GL |
1614 | ceu_sub_width, scale_h, pix->width, |
1615 | ceu_sub_height, scale_v, pix->height); | |
961801bb | 1616 | |
760697be | 1617 | cam->code = xlate->code; |
760697be | 1618 | icd->current_fmt = xlate; |
961801bb | 1619 | |
1edcc10d | 1620 | pcdev->field = field; |
6a6c8786 | 1621 | pcdev->image_mode = image_mode; |
961801bb GL |
1622 | |
1623 | return 0; | |
0d3244d6 MD |
1624 | } |
1625 | ||
d8fac217 GL |
1626 | static int sh_mobile_ceu_try_fmt(struct soc_camera_device *icd, |
1627 | struct v4l2_format *f) | |
0d3244d6 | 1628 | { |
9414de39 | 1629 | const struct soc_camera_format_xlate *xlate; |
904078f1 | 1630 | struct v4l2_pix_format *pix = &f->fmt.pix; |
c9c1f1c0 | 1631 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
760697be | 1632 | struct v4l2_mbus_framefmt mf; |
904078f1 | 1633 | __u32 pixfmt = pix->pixelformat; |
961801bb | 1634 | int width, height; |
ccab8a29 | 1635 | int ret; |
a2c8c68c | 1636 | |
9414de39 MD |
1637 | xlate = soc_camera_xlate_by_fourcc(icd, pixfmt); |
1638 | if (!xlate) { | |
0166b743 | 1639 | dev_warn(icd->dev.parent, "Format %x not found\n", pixfmt); |
25c4d74e | 1640 | return -EINVAL; |
9414de39 | 1641 | } |
25c4d74e | 1642 | |
0d3244d6 MD |
1643 | /* FIXME: calculate using depth and bus width */ |
1644 | ||
904078f1 GL |
1645 | v4l_bound_align_image(&pix->width, 2, 2560, 1, |
1646 | &pix->height, 4, 1920, 2, 0); | |
0d3244d6 | 1647 | |
961801bb GL |
1648 | width = pix->width; |
1649 | height = pix->height; | |
1650 | ||
760697be | 1651 | pix->bytesperline = soc_mbus_bytes_per_line(width, xlate->host_fmt); |
981cbef2 | 1652 | if ((int)pix->bytesperline < 0) |
760697be GL |
1653 | return pix->bytesperline; |
1654 | pix->sizeimage = height * pix->bytesperline; | |
979ea1dd | 1655 | |
0d3244d6 | 1656 | /* limit to sensor capabilities */ |
760697be GL |
1657 | mf.width = pix->width; |
1658 | mf.height = pix->height; | |
1659 | mf.field = pix->field; | |
1660 | mf.code = xlate->code; | |
1661 | mf.colorspace = pix->colorspace; | |
1662 | ||
1663 | ret = v4l2_subdev_call(sd, video, try_mbus_fmt, &mf); | |
ccab8a29 KM |
1664 | if (ret < 0) |
1665 | return ret; | |
1666 | ||
760697be GL |
1667 | pix->width = mf.width; |
1668 | pix->height = mf.height; | |
1669 | pix->field = mf.field; | |
1670 | pix->colorspace = mf.colorspace; | |
1671 | ||
961801bb GL |
1672 | switch (pixfmt) { |
1673 | case V4L2_PIX_FMT_NV12: | |
1674 | case V4L2_PIX_FMT_NV21: | |
1675 | case V4L2_PIX_FMT_NV16: | |
1676 | case V4L2_PIX_FMT_NV61: | |
1677 | /* FIXME: check against rect_max after converting soc-camera */ | |
1678 | /* We can scale precisely, need a bigger image from camera */ | |
1679 | if (pix->width < width || pix->height < height) { | |
760697be GL |
1680 | /* |
1681 | * We presume, the sensor behaves sanely, i.e., if | |
1682 | * requested a bigger rectangle, it will not return a | |
1683 | * smaller one. | |
1684 | */ | |
1685 | mf.width = 2560; | |
1686 | mf.height = 1920; | |
1687 | ret = v4l2_subdev_call(sd, video, try_mbus_fmt, &mf); | |
961801bb GL |
1688 | if (ret < 0) { |
1689 | /* Shouldn't actually happen... */ | |
0166b743 | 1690 | dev_err(icd->dev.parent, |
760697be GL |
1691 | "FIXME: client try_fmt() = %d\n", ret); |
1692 | return ret; | |
961801bb GL |
1693 | } |
1694 | } | |
760697be GL |
1695 | /* We will scale exactly */ |
1696 | if (mf.width > width) | |
961801bb | 1697 | pix->width = width; |
760697be | 1698 | if (mf.height > height) |
961801bb | 1699 | pix->height = height; |
ccab8a29 KM |
1700 | } |
1701 | ||
1702 | return ret; | |
0d3244d6 MD |
1703 | } |
1704 | ||
1705 | static int sh_mobile_ceu_reqbufs(struct soc_camera_file *icf, | |
1706 | struct v4l2_requestbuffers *p) | |
1707 | { | |
1708 | int i; | |
1709 | ||
5d28d525 GL |
1710 | /* |
1711 | * This is for locking debugging only. I removed spinlocks and now I | |
0d3244d6 MD |
1712 | * check whether .prepare is ever called on a linked buffer, or whether |
1713 | * a dma IRQ can occur for an in-work or unlinked buffer. Until now | |
5d28d525 GL |
1714 | * it hadn't triggered |
1715 | */ | |
0d3244d6 MD |
1716 | for (i = 0; i < p->count; i++) { |
1717 | struct sh_mobile_ceu_buffer *buf; | |
1718 | ||
1719 | buf = container_of(icf->vb_vidq.bufs[i], | |
1720 | struct sh_mobile_ceu_buffer, vb); | |
1721 | INIT_LIST_HEAD(&buf->vb.queue); | |
1722 | } | |
1723 | ||
1724 | return 0; | |
1725 | } | |
1726 | ||
1727 | static unsigned int sh_mobile_ceu_poll(struct file *file, poll_table *pt) | |
1728 | { | |
1729 | struct soc_camera_file *icf = file->private_data; | |
1730 | struct sh_mobile_ceu_buffer *buf; | |
1731 | ||
1732 | buf = list_entry(icf->vb_vidq.stream.next, | |
1733 | struct sh_mobile_ceu_buffer, vb.stream); | |
1734 | ||
1735 | poll_wait(file, &buf->vb.done, pt); | |
1736 | ||
1737 | if (buf->vb.state == VIDEOBUF_DONE || | |
1738 | buf->vb.state == VIDEOBUF_ERROR) | |
1739 | return POLLIN|POLLRDNORM; | |
1740 | ||
1741 | return 0; | |
1742 | } | |
1743 | ||
1744 | static int sh_mobile_ceu_querycap(struct soc_camera_host *ici, | |
1745 | struct v4l2_capability *cap) | |
1746 | { | |
1747 | strlcpy(cap->card, "SuperH_Mobile_CEU", sizeof(cap->card)); | |
1748 | cap->version = KERNEL_VERSION(0, 0, 5); | |
1749 | cap->capabilities = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING; | |
1750 | return 0; | |
1751 | } | |
1752 | ||
1753 | static void sh_mobile_ceu_init_videobuf(struct videobuf_queue *q, | |
1754 | struct soc_camera_device *icd) | |
1755 | { | |
1756 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); | |
1757 | struct sh_mobile_ceu_dev *pcdev = ici->priv; | |
1758 | ||
1759 | videobuf_queue_dma_contig_init(q, | |
1760 | &sh_mobile_ceu_videobuf_ops, | |
0166b743 | 1761 | icd->dev.parent, &pcdev->lock, |
0d3244d6 | 1762 | V4L2_BUF_TYPE_VIDEO_CAPTURE, |
1edcc10d | 1763 | pcdev->field, |
0d3244d6 MD |
1764 | sizeof(struct sh_mobile_ceu_buffer), |
1765 | icd); | |
1766 | } | |
1767 | ||
d07602a0 GL |
1768 | static int sh_mobile_ceu_get_parm(struct soc_camera_device *icd, |
1769 | struct v4l2_streamparm *parm) | |
1770 | { | |
1771 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); | |
1772 | ||
1773 | return v4l2_subdev_call(sd, video, g_parm, parm); | |
1774 | } | |
1775 | ||
1776 | static int sh_mobile_ceu_set_parm(struct soc_camera_device *icd, | |
1777 | struct v4l2_streamparm *parm) | |
1778 | { | |
1779 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); | |
1780 | ||
1781 | return v4l2_subdev_call(sd, video, s_parm, parm); | |
1782 | } | |
1783 | ||
4a6110bc GL |
1784 | static int sh_mobile_ceu_get_ctrl(struct soc_camera_device *icd, |
1785 | struct v4l2_control *ctrl) | |
1786 | { | |
1787 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); | |
1788 | struct sh_mobile_ceu_dev *pcdev = ici->priv; | |
1789 | u32 val; | |
1790 | ||
1791 | switch (ctrl->id) { | |
1792 | case V4L2_CID_SHARPNESS: | |
1793 | val = ceu_read(pcdev, CLFCR); | |
1794 | ctrl->value = val ^ 1; | |
1795 | return 0; | |
1796 | } | |
1797 | return -ENOIOCTLCMD; | |
1798 | } | |
1799 | ||
1800 | static int sh_mobile_ceu_set_ctrl(struct soc_camera_device *icd, | |
1801 | struct v4l2_control *ctrl) | |
1802 | { | |
1803 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); | |
1804 | struct sh_mobile_ceu_dev *pcdev = ici->priv; | |
1805 | ||
1806 | switch (ctrl->id) { | |
1807 | case V4L2_CID_SHARPNESS: | |
760697be | 1808 | switch (icd->current_fmt->host_fmt->fourcc) { |
4a6110bc GL |
1809 | case V4L2_PIX_FMT_NV12: |
1810 | case V4L2_PIX_FMT_NV21: | |
1811 | case V4L2_PIX_FMT_NV16: | |
1812 | case V4L2_PIX_FMT_NV61: | |
1813 | ceu_write(pcdev, CLFCR, !ctrl->value); | |
1814 | return 0; | |
1815 | } | |
1816 | return -EINVAL; | |
1817 | } | |
1818 | return -ENOIOCTLCMD; | |
1819 | } | |
1820 | ||
1821 | static const struct v4l2_queryctrl sh_mobile_ceu_controls[] = { | |
1822 | { | |
1823 | .id = V4L2_CID_SHARPNESS, | |
1824 | .type = V4L2_CTRL_TYPE_BOOLEAN, | |
1825 | .name = "Low-pass filter", | |
1826 | .minimum = 0, | |
1827 | .maximum = 1, | |
1828 | .step = 1, | |
1829 | .default_value = 0, | |
1830 | }, | |
1831 | }; | |
1832 | ||
0d3244d6 MD |
1833 | static struct soc_camera_host_ops sh_mobile_ceu_host_ops = { |
1834 | .owner = THIS_MODULE, | |
1835 | .add = sh_mobile_ceu_add_device, | |
1836 | .remove = sh_mobile_ceu_remove_device, | |
9414de39 | 1837 | .get_formats = sh_mobile_ceu_get_formats, |
904078f1 | 1838 | .put_formats = sh_mobile_ceu_put_formats, |
e622681d | 1839 | .get_crop = sh_mobile_ceu_get_crop, |
09e231b3 | 1840 | .set_crop = sh_mobile_ceu_set_crop, |
d8fac217 GL |
1841 | .set_fmt = sh_mobile_ceu_set_fmt, |
1842 | .try_fmt = sh_mobile_ceu_try_fmt, | |
4a6110bc GL |
1843 | .set_ctrl = sh_mobile_ceu_set_ctrl, |
1844 | .get_ctrl = sh_mobile_ceu_get_ctrl, | |
d07602a0 GL |
1845 | .set_parm = sh_mobile_ceu_set_parm, |
1846 | .get_parm = sh_mobile_ceu_get_parm, | |
0d3244d6 MD |
1847 | .reqbufs = sh_mobile_ceu_reqbufs, |
1848 | .poll = sh_mobile_ceu_poll, | |
1849 | .querycap = sh_mobile_ceu_querycap, | |
0d3244d6 MD |
1850 | .set_bus_param = sh_mobile_ceu_set_bus_param, |
1851 | .init_videobuf = sh_mobile_ceu_init_videobuf, | |
4a6110bc GL |
1852 | .controls = sh_mobile_ceu_controls, |
1853 | .num_controls = ARRAY_SIZE(sh_mobile_ceu_controls), | |
0d3244d6 MD |
1854 | }; |
1855 | ||
979ea1dd | 1856 | static int __devinit sh_mobile_ceu_probe(struct platform_device *pdev) |
0d3244d6 MD |
1857 | { |
1858 | struct sh_mobile_ceu_dev *pcdev; | |
1859 | struct resource *res; | |
1860 | void __iomem *base; | |
1861 | unsigned int irq; | |
1862 | int err = 0; | |
1863 | ||
1864 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); | |
1865 | irq = platform_get_irq(pdev, 0); | |
b89fc2e5 | 1866 | if (!res || (int)irq <= 0) { |
0d3244d6 MD |
1867 | dev_err(&pdev->dev, "Not enough CEU platform resources.\n"); |
1868 | err = -ENODEV; | |
1869 | goto exit; | |
1870 | } | |
1871 | ||
1872 | pcdev = kzalloc(sizeof(*pcdev), GFP_KERNEL); | |
1873 | if (!pcdev) { | |
1874 | dev_err(&pdev->dev, "Could not allocate pcdev\n"); | |
1875 | err = -ENOMEM; | |
1876 | goto exit; | |
1877 | } | |
1878 | ||
0d3244d6 MD |
1879 | INIT_LIST_HEAD(&pcdev->capture); |
1880 | spin_lock_init(&pcdev->lock); | |
1881 | ||
1882 | pcdev->pdata = pdev->dev.platform_data; | |
1883 | if (!pcdev->pdata) { | |
1884 | err = -EINVAL; | |
1885 | dev_err(&pdev->dev, "CEU platform data not set.\n"); | |
1886 | goto exit_kfree; | |
1887 | } | |
1888 | ||
eb6c8558 | 1889 | base = ioremap_nocache(res->start, resource_size(res)); |
0d3244d6 MD |
1890 | if (!base) { |
1891 | err = -ENXIO; | |
1892 | dev_err(&pdev->dev, "Unable to ioremap CEU registers.\n"); | |
1893 | goto exit_kfree; | |
1894 | } | |
1895 | ||
1896 | pcdev->irq = irq; | |
1897 | pcdev->base = base; | |
1898 | pcdev->video_limit = 0; /* only enabled if second resource exists */ | |
0d3244d6 MD |
1899 | |
1900 | res = platform_get_resource(pdev, IORESOURCE_MEM, 1); | |
1901 | if (res) { | |
1902 | err = dma_declare_coherent_memory(&pdev->dev, res->start, | |
1903 | res->start, | |
eb6c8558 | 1904 | resource_size(res), |
0d3244d6 MD |
1905 | DMA_MEMORY_MAP | |
1906 | DMA_MEMORY_EXCLUSIVE); | |
1907 | if (!err) { | |
1908 | dev_err(&pdev->dev, "Unable to declare CEU memory.\n"); | |
1909 | err = -ENXIO; | |
1910 | goto exit_iounmap; | |
1911 | } | |
1912 | ||
eb6c8558 | 1913 | pcdev->video_limit = resource_size(res); |
0d3244d6 MD |
1914 | } |
1915 | ||
1916 | /* request irq */ | |
1917 | err = request_irq(pcdev->irq, sh_mobile_ceu_irq, IRQF_DISABLED, | |
af128a10 | 1918 | dev_name(&pdev->dev), pcdev); |
0d3244d6 MD |
1919 | if (err) { |
1920 | dev_err(&pdev->dev, "Unable to register CEU interrupt.\n"); | |
1921 | goto exit_release_mem; | |
1922 | } | |
1923 | ||
6d1386c6 MD |
1924 | pm_suspend_ignore_children(&pdev->dev, true); |
1925 | pm_runtime_enable(&pdev->dev); | |
1926 | pm_runtime_resume(&pdev->dev); | |
a42b6dd6 | 1927 | |
0d3244d6 | 1928 | pcdev->ici.priv = pcdev; |
979ea1dd | 1929 | pcdev->ici.v4l2_dev.dev = &pdev->dev; |
0d3244d6 | 1930 | pcdev->ici.nr = pdev->id; |
af128a10 KS |
1931 | pcdev->ici.drv_name = dev_name(&pdev->dev); |
1932 | pcdev->ici.ops = &sh_mobile_ceu_host_ops; | |
0d3244d6 MD |
1933 | |
1934 | err = soc_camera_host_register(&pcdev->ici); | |
1935 | if (err) | |
055e05a0 | 1936 | goto exit_free_clk; |
0d3244d6 MD |
1937 | |
1938 | return 0; | |
1939 | ||
055e05a0 KM |
1940 | exit_free_clk: |
1941 | pm_runtime_disable(&pdev->dev); | |
0d3244d6 MD |
1942 | free_irq(pcdev->irq, pcdev); |
1943 | exit_release_mem: | |
1944 | if (platform_get_resource(pdev, IORESOURCE_MEM, 1)) | |
1945 | dma_release_declared_memory(&pdev->dev); | |
1946 | exit_iounmap: | |
1947 | iounmap(base); | |
1948 | exit_kfree: | |
1949 | kfree(pcdev); | |
1950 | exit: | |
1951 | return err; | |
1952 | } | |
1953 | ||
979ea1dd | 1954 | static int __devexit sh_mobile_ceu_remove(struct platform_device *pdev) |
0d3244d6 | 1955 | { |
eff505fa GL |
1956 | struct soc_camera_host *soc_host = to_soc_camera_host(&pdev->dev); |
1957 | struct sh_mobile_ceu_dev *pcdev = container_of(soc_host, | |
1958 | struct sh_mobile_ceu_dev, ici); | |
0d3244d6 | 1959 | |
eff505fa | 1960 | soc_camera_host_unregister(soc_host); |
055e05a0 | 1961 | pm_runtime_disable(&pdev->dev); |
0d3244d6 MD |
1962 | free_irq(pcdev->irq, pcdev); |
1963 | if (platform_get_resource(pdev, IORESOURCE_MEM, 1)) | |
1964 | dma_release_declared_memory(&pdev->dev); | |
1965 | iounmap(pcdev->base); | |
1966 | kfree(pcdev); | |
1967 | return 0; | |
1968 | } | |
1969 | ||
6d1386c6 MD |
1970 | static int sh_mobile_ceu_runtime_nop(struct device *dev) |
1971 | { | |
1972 | /* Runtime PM callback shared between ->runtime_suspend() | |
1973 | * and ->runtime_resume(). Simply returns success. | |
1974 | * | |
1975 | * This driver re-initializes all registers after | |
1976 | * pm_runtime_get_sync() anyway so there is no need | |
1977 | * to save and restore registers here. | |
1978 | */ | |
1979 | return 0; | |
1980 | } | |
1981 | ||
47145210 | 1982 | static const struct dev_pm_ops sh_mobile_ceu_dev_pm_ops = { |
6d1386c6 MD |
1983 | .runtime_suspend = sh_mobile_ceu_runtime_nop, |
1984 | .runtime_resume = sh_mobile_ceu_runtime_nop, | |
1985 | }; | |
1986 | ||
0d3244d6 MD |
1987 | static struct platform_driver sh_mobile_ceu_driver = { |
1988 | .driver = { | |
1989 | .name = "sh_mobile_ceu", | |
6d1386c6 | 1990 | .pm = &sh_mobile_ceu_dev_pm_ops, |
0d3244d6 MD |
1991 | }, |
1992 | .probe = sh_mobile_ceu_probe, | |
50e55fd1 | 1993 | .remove = __devexit_p(sh_mobile_ceu_remove), |
0d3244d6 MD |
1994 | }; |
1995 | ||
1996 | static int __init sh_mobile_ceu_init(void) | |
1997 | { | |
1998 | return platform_driver_register(&sh_mobile_ceu_driver); | |
1999 | } | |
2000 | ||
2001 | static void __exit sh_mobile_ceu_exit(void) | |
2002 | { | |
01c1e4ca | 2003 | platform_driver_unregister(&sh_mobile_ceu_driver); |
0d3244d6 MD |
2004 | } |
2005 | ||
2006 | module_init(sh_mobile_ceu_init); | |
2007 | module_exit(sh_mobile_ceu_exit); | |
2008 | ||
2009 | MODULE_DESCRIPTION("SuperH Mobile CEU driver"); | |
2010 | MODULE_AUTHOR("Magnus Damm"); | |
2011 | MODULE_LICENSE("GPL"); | |
40e2e092 | 2012 | MODULE_ALIAS("platform:sh_mobile_ceu"); |