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> | |
760697be GL |
41 | #include <media/v4l2-mediabus.h> |
42 | #include <media/soc_mediabus.h> | |
0d3244d6 MD |
43 | |
44 | /* register offsets for sh7722 / sh7723 */ | |
45 | ||
dd54203b MD |
46 | #define CAPSR 0x00 /* Capture start register */ |
47 | #define CAPCR 0x04 /* Capture control register */ | |
48 | #define CAMCR 0x08 /* Capture interface control register */ | |
49 | #define CMCYR 0x0c /* Capture interface cycle register */ | |
50 | #define CAMOR 0x10 /* Capture interface offset register */ | |
51 | #define CAPWR 0x14 /* Capture interface width register */ | |
52 | #define CAIFR 0x18 /* Capture interface input format register */ | |
53 | #define CSTCR 0x20 /* Camera strobe control register (<= sh7722) */ | |
54 | #define CSECR 0x24 /* Camera strobe emission count register (<= sh7722) */ | |
55 | #define CRCNTR 0x28 /* CEU register control register */ | |
56 | #define CRCMPR 0x2c /* CEU register forcible control register */ | |
57 | #define CFLCR 0x30 /* Capture filter control register */ | |
58 | #define CFSZR 0x34 /* Capture filter size clip register */ | |
59 | #define CDWDR 0x38 /* Capture destination width register */ | |
60 | #define CDAYR 0x3c /* Capture data address Y register */ | |
61 | #define CDACR 0x40 /* Capture data address C register */ | |
62 | #define CDBYR 0x44 /* Capture data bottom-field address Y register */ | |
63 | #define CDBCR 0x48 /* Capture data bottom-field address C register */ | |
64 | #define CBDSR 0x4c /* Capture bundle destination size register */ | |
65 | #define CFWCR 0x5c /* Firewall operation control register */ | |
66 | #define CLFCR 0x60 /* Capture low-pass filter control register */ | |
67 | #define CDOCR 0x64 /* Capture data output control register */ | |
68 | #define CDDCR 0x68 /* Capture data complexity level register */ | |
69 | #define CDDAR 0x6c /* Capture data complexity level address register */ | |
70 | #define CEIER 0x70 /* Capture event interrupt enable register */ | |
71 | #define CETCR 0x74 /* Capture event flag clear register */ | |
72 | #define CSTSR 0x7c /* Capture status register */ | |
73 | #define CSRTR 0x80 /* Capture software reset register */ | |
74 | #define CDSSR 0x84 /* Capture data size register */ | |
75 | #define CDAYR2 0x90 /* Capture data address Y register 2 */ | |
76 | #define CDACR2 0x94 /* Capture data address C register 2 */ | |
77 | #define CDBYR2 0x98 /* Capture data bottom-field address Y register 2 */ | |
78 | #define CDBCR2 0x9c /* Capture data bottom-field address C register 2 */ | |
0d3244d6 | 79 | |
6a6c8786 GL |
80 | #undef DEBUG_GEOMETRY |
81 | #ifdef DEBUG_GEOMETRY | |
82 | #define dev_geo dev_info | |
83 | #else | |
84 | #define dev_geo dev_dbg | |
85 | #endif | |
86 | ||
0d3244d6 MD |
87 | /* per video frame buffer */ |
88 | struct sh_mobile_ceu_buffer { | |
89 | struct videobuf_buffer vb; /* v4l buffer must be first */ | |
760697be | 90 | enum v4l2_mbus_pixelcode code; |
0d3244d6 MD |
91 | }; |
92 | ||
93 | struct sh_mobile_ceu_dev { | |
0d3244d6 MD |
94 | struct soc_camera_host ici; |
95 | struct soc_camera_device *icd; | |
96 | ||
97 | unsigned int irq; | |
98 | void __iomem *base; | |
99 | unsigned long video_limit; | |
100 | ||
c60f2b5c | 101 | /* lock used to protect videobuf */ |
0d3244d6 MD |
102 | spinlock_t lock; |
103 | struct list_head capture; | |
104 | struct videobuf_buffer *active; | |
105 | ||
106 | struct sh_mobile_ceu_info *pdata; | |
8be65dc5 | 107 | |
961801bb GL |
108 | u32 cflcr; |
109 | ||
904078f1 GL |
110 | unsigned int is_interlaced:1; |
111 | unsigned int image_mode:1; | |
112 | unsigned int is_16bit:1; | |
113 | }; | |
114 | ||
115 | struct sh_mobile_ceu_cam { | |
6a6c8786 GL |
116 | struct v4l2_rect ceu_rect; |
117 | unsigned int cam_width; | |
118 | unsigned int cam_height; | |
760697be GL |
119 | const struct soc_mbus_pixelfmt *extra_fmt; |
120 | enum v4l2_mbus_pixelcode code; | |
0d3244d6 MD |
121 | }; |
122 | ||
c354b400 KM |
123 | static unsigned long make_bus_param(struct sh_mobile_ceu_dev *pcdev) |
124 | { | |
125 | unsigned long flags; | |
126 | ||
127 | flags = SOCAM_MASTER | | |
128 | SOCAM_PCLK_SAMPLE_RISING | | |
129 | SOCAM_HSYNC_ACTIVE_HIGH | | |
130 | SOCAM_HSYNC_ACTIVE_LOW | | |
131 | SOCAM_VSYNC_ACTIVE_HIGH | | |
132 | SOCAM_VSYNC_ACTIVE_LOW | | |
133 | SOCAM_DATA_ACTIVE_HIGH; | |
134 | ||
135 | if (pcdev->pdata->flags & SH_CEU_FLAG_USE_8BIT_BUS) | |
136 | flags |= SOCAM_DATAWIDTH_8; | |
137 | ||
138 | if (pcdev->pdata->flags & SH_CEU_FLAG_USE_16BIT_BUS) | |
139 | flags |= SOCAM_DATAWIDTH_16; | |
140 | ||
141 | if (flags & SOCAM_DATAWIDTH_MASK) | |
142 | return flags; | |
143 | ||
144 | return 0; | |
145 | } | |
146 | ||
0d3244d6 | 147 | static void ceu_write(struct sh_mobile_ceu_dev *priv, |
7a1a8164 | 148 | unsigned long reg_offs, u32 data) |
0d3244d6 MD |
149 | { |
150 | iowrite32(data, priv->base + reg_offs); | |
151 | } | |
152 | ||
7a1a8164 | 153 | static u32 ceu_read(struct sh_mobile_ceu_dev *priv, unsigned long reg_offs) |
0d3244d6 MD |
154 | { |
155 | return ioread32(priv->base + reg_offs); | |
156 | } | |
157 | ||
b1de7aeb KM |
158 | static int sh_mobile_ceu_soft_reset(struct sh_mobile_ceu_dev *pcdev) |
159 | { | |
160 | int i, success = 0; | |
161 | struct soc_camera_device *icd = pcdev->icd; | |
162 | ||
163 | ceu_write(pcdev, CAPSR, 1 << 16); /* reset */ | |
164 | ||
165 | /* wait CSTSR.CPTON bit */ | |
166 | for (i = 0; i < 1000; i++) { | |
167 | if (!(ceu_read(pcdev, CSTSR) & 1)) { | |
168 | success++; | |
169 | break; | |
170 | } | |
171 | udelay(1); | |
172 | } | |
173 | ||
174 | /* wait CAPSR.CPKIL bit */ | |
175 | for (i = 0; i < 1000; i++) { | |
176 | if (!(ceu_read(pcdev, CAPSR) & (1 << 16))) { | |
177 | success++; | |
178 | break; | |
179 | } | |
180 | udelay(1); | |
181 | } | |
182 | ||
183 | ||
184 | if (2 != success) { | |
185 | dev_warn(&icd->dev, "soft reset time out\n"); | |
186 | return -EIO; | |
187 | } | |
188 | ||
189 | return 0; | |
190 | } | |
191 | ||
0d3244d6 MD |
192 | /* |
193 | * Videobuf operations | |
194 | */ | |
195 | static int sh_mobile_ceu_videobuf_setup(struct videobuf_queue *vq, | |
196 | unsigned int *count, | |
197 | unsigned int *size) | |
198 | { | |
199 | struct soc_camera_device *icd = vq->priv_data; | |
200 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); | |
201 | struct sh_mobile_ceu_dev *pcdev = ici->priv; | |
760697be GL |
202 | int bytes_per_line = soc_mbus_bytes_per_line(icd->user_width, |
203 | icd->current_fmt->host_fmt); | |
0d3244d6 | 204 | |
760697be GL |
205 | if (bytes_per_line < 0) |
206 | return bytes_per_line; | |
207 | ||
208 | *size = PAGE_ALIGN(bytes_per_line * icd->user_height); | |
0d3244d6 MD |
209 | |
210 | if (0 == *count) | |
211 | *count = 2; | |
212 | ||
213 | if (pcdev->video_limit) { | |
214 | while (*size * *count > pcdev->video_limit) | |
215 | (*count)--; | |
216 | } | |
217 | ||
0166b743 | 218 | dev_dbg(icd->dev.parent, "count=%d, size=%d\n", *count, *size); |
0d3244d6 MD |
219 | |
220 | return 0; | |
221 | } | |
222 | ||
223 | static void free_buffer(struct videobuf_queue *vq, | |
224 | struct sh_mobile_ceu_buffer *buf) | |
225 | { | |
226 | struct soc_camera_device *icd = vq->priv_data; | |
6a6c8786 | 227 | struct device *dev = icd->dev.parent; |
0d3244d6 | 228 | |
6a6c8786 | 229 | dev_dbg(dev, "%s (vb=0x%p) 0x%08lx %zd\n", __func__, |
0d3244d6 MD |
230 | &buf->vb, buf->vb.baddr, buf->vb.bsize); |
231 | ||
232 | if (in_interrupt()) | |
233 | BUG(); | |
234 | ||
97215cbd | 235 | videobuf_waiton(&buf->vb, 0, 0); |
0d3244d6 | 236 | videobuf_dma_contig_free(vq, &buf->vb); |
6a6c8786 | 237 | dev_dbg(dev, "%s freed\n", __func__); |
0d3244d6 MD |
238 | buf->vb.state = VIDEOBUF_NEEDS_INIT; |
239 | } | |
240 | ||
7a1a8164 MD |
241 | #define CEU_CETCR_MAGIC 0x0317f313 /* acknowledge magical interrupt sources */ |
242 | #define CEU_CETCR_IGRW (1 << 4) /* prohibited register access interrupt bit */ | |
243 | #define CEU_CEIER_CPEIE (1 << 0) /* one-frame capture end interrupt */ | |
5cf93f1d | 244 | #define CEU_CEIER_VBP (1 << 20) /* vbp error */ |
7a1a8164 | 245 | #define CEU_CAPCR_CTNCP (1 << 16) /* continuous capture mode (if set) */ |
5cf93f1d | 246 | #define CEU_CEIER_MASK (CEU_CEIER_CPEIE | CEU_CEIER_VBP) |
7a1a8164 MD |
247 | |
248 | ||
5cf93f1d KM |
249 | /* |
250 | * return value doesn't reflex the success/failure to queue the new buffer, | |
251 | * but rather the status of the previous buffer. | |
252 | */ | |
253 | static int sh_mobile_ceu_capture(struct sh_mobile_ceu_dev *pcdev) | |
0d3244d6 | 254 | { |
8be65dc5 | 255 | struct soc_camera_device *icd = pcdev->icd; |
ccab8a29 | 256 | dma_addr_t phys_addr_top, phys_addr_bottom; |
5cf93f1d KM |
257 | u32 status; |
258 | int ret = 0; | |
7a1a8164 | 259 | |
5d28d525 GL |
260 | /* |
261 | * The hardware is _very_ picky about this sequence. Especially | |
7a1a8164 MD |
262 | * the CEU_CETCR_MAGIC value. It seems like we need to acknowledge |
263 | * several not-so-well documented interrupt sources in CETCR. | |
264 | */ | |
5cf93f1d KM |
265 | ceu_write(pcdev, CEIER, ceu_read(pcdev, CEIER) & ~CEU_CEIER_MASK); |
266 | status = ceu_read(pcdev, CETCR); | |
267 | ceu_write(pcdev, CETCR, ~status & CEU_CETCR_MAGIC); | |
268 | ceu_write(pcdev, CEIER, ceu_read(pcdev, CEIER) | CEU_CEIER_MASK); | |
7a1a8164 MD |
269 | ceu_write(pcdev, CAPCR, ceu_read(pcdev, CAPCR) & ~CEU_CAPCR_CTNCP); |
270 | ceu_write(pcdev, CETCR, CEU_CETCR_MAGIC ^ CEU_CETCR_IGRW); | |
0d3244d6 | 271 | |
5cf93f1d KM |
272 | /* |
273 | * When a VBP interrupt occurs, a capture end interrupt does not occur | |
274 | * and the image of that frame is not captured correctly. So, soft reset | |
275 | * is needed here. | |
276 | */ | |
277 | if (status & CEU_CEIER_VBP) { | |
278 | sh_mobile_ceu_soft_reset(pcdev); | |
279 | ret = -EIO; | |
280 | } | |
281 | ||
8be65dc5 | 282 | if (!pcdev->active) |
5cf93f1d | 283 | return ret; |
8be65dc5 | 284 | |
ccab8a29 KM |
285 | phys_addr_top = videobuf_to_dma_contig(pcdev->active); |
286 | ceu_write(pcdev, CDAYR, phys_addr_top); | |
e802967c | 287 | if (pcdev->is_interlaced) { |
6a6c8786 | 288 | phys_addr_bottom = phys_addr_top + icd->user_width; |
ccab8a29 KM |
289 | ceu_write(pcdev, CDBYR, phys_addr_bottom); |
290 | } | |
8be65dc5 | 291 | |
760697be | 292 | switch (icd->current_fmt->host_fmt->fourcc) { |
8be65dc5 MD |
293 | case V4L2_PIX_FMT_NV12: |
294 | case V4L2_PIX_FMT_NV21: | |
9e4a56d2 MD |
295 | case V4L2_PIX_FMT_NV16: |
296 | case V4L2_PIX_FMT_NV61: | |
6a6c8786 GL |
297 | phys_addr_top += icd->user_width * |
298 | icd->user_height; | |
ccab8a29 | 299 | ceu_write(pcdev, CDACR, phys_addr_top); |
e802967c | 300 | if (pcdev->is_interlaced) { |
a0705b07 | 301 | phys_addr_bottom = phys_addr_top + |
6a6c8786 | 302 | icd->user_width; |
ccab8a29 KM |
303 | ceu_write(pcdev, CDBCR, phys_addr_bottom); |
304 | } | |
0d3244d6 | 305 | } |
8be65dc5 MD |
306 | |
307 | pcdev->active->state = VIDEOBUF_ACTIVE; | |
308 | ceu_write(pcdev, CAPSR, 0x1); /* start capture */ | |
5cf93f1d KM |
309 | |
310 | return ret; | |
0d3244d6 MD |
311 | } |
312 | ||
313 | static int sh_mobile_ceu_videobuf_prepare(struct videobuf_queue *vq, | |
314 | struct videobuf_buffer *vb, | |
315 | enum v4l2_field field) | |
316 | { | |
317 | struct soc_camera_device *icd = vq->priv_data; | |
318 | struct sh_mobile_ceu_buffer *buf; | |
760697be GL |
319 | int bytes_per_line = soc_mbus_bytes_per_line(icd->user_width, |
320 | icd->current_fmt->host_fmt); | |
0d3244d6 MD |
321 | int ret; |
322 | ||
760697be GL |
323 | if (bytes_per_line < 0) |
324 | return bytes_per_line; | |
325 | ||
0d3244d6 MD |
326 | buf = container_of(vb, struct sh_mobile_ceu_buffer, vb); |
327 | ||
0166b743 | 328 | dev_dbg(icd->dev.parent, "%s (vb=0x%p) 0x%08lx %zd\n", __func__, |
0d3244d6 MD |
329 | vb, vb->baddr, vb->bsize); |
330 | ||
331 | /* Added list head initialization on alloc */ | |
332 | WARN_ON(!list_empty(&vb->queue)); | |
333 | ||
334 | #ifdef DEBUG | |
5d28d525 GL |
335 | /* |
336 | * This can be useful if you want to see if we actually fill | |
337 | * the buffer with something | |
338 | */ | |
0d3244d6 MD |
339 | memset((void *)vb->baddr, 0xaa, vb->bsize); |
340 | #endif | |
341 | ||
342 | BUG_ON(NULL == icd->current_fmt); | |
343 | ||
760697be | 344 | if (buf->code != icd->current_fmt->code || |
6a6c8786 GL |
345 | vb->width != icd->user_width || |
346 | vb->height != icd->user_height || | |
0d3244d6 | 347 | vb->field != field) { |
760697be | 348 | buf->code = icd->current_fmt->code; |
6a6c8786 GL |
349 | vb->width = icd->user_width; |
350 | vb->height = icd->user_height; | |
0d3244d6 MD |
351 | vb->field = field; |
352 | vb->state = VIDEOBUF_NEEDS_INIT; | |
353 | } | |
354 | ||
760697be | 355 | vb->size = vb->height * bytes_per_line; |
0d3244d6 MD |
356 | if (0 != vb->baddr && vb->bsize < vb->size) { |
357 | ret = -EINVAL; | |
358 | goto out; | |
359 | } | |
360 | ||
361 | if (vb->state == VIDEOBUF_NEEDS_INIT) { | |
362 | ret = videobuf_iolock(vq, vb, NULL); | |
363 | if (ret) | |
364 | goto fail; | |
365 | vb->state = VIDEOBUF_PREPARED; | |
366 | } | |
367 | ||
368 | return 0; | |
369 | fail: | |
370 | free_buffer(vq, buf); | |
371 | out: | |
372 | return ret; | |
373 | } | |
374 | ||
2dd54a54 | 375 | /* Called under spinlock_irqsave(&pcdev->lock, ...) */ |
0d3244d6 MD |
376 | static void sh_mobile_ceu_videobuf_queue(struct videobuf_queue *vq, |
377 | struct videobuf_buffer *vb) | |
378 | { | |
379 | struct soc_camera_device *icd = vq->priv_data; | |
380 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); | |
381 | struct sh_mobile_ceu_dev *pcdev = ici->priv; | |
0d3244d6 | 382 | |
0166b743 | 383 | dev_dbg(icd->dev.parent, "%s (vb=0x%p) 0x%08lx %zd\n", __func__, |
0d3244d6 MD |
384 | vb, vb->baddr, vb->bsize); |
385 | ||
51354cc3 | 386 | vb->state = VIDEOBUF_QUEUED; |
0d3244d6 MD |
387 | list_add_tail(&vb->queue, &pcdev->capture); |
388 | ||
389 | if (!pcdev->active) { | |
5cf93f1d KM |
390 | /* |
391 | * Because there were no active buffer at this moment, | |
392 | * we are not interested in the return value of | |
393 | * sh_mobile_ceu_capture here. | |
394 | */ | |
0d3244d6 MD |
395 | pcdev->active = vb; |
396 | sh_mobile_ceu_capture(pcdev); | |
397 | } | |
0d3244d6 MD |
398 | } |
399 | ||
400 | static void sh_mobile_ceu_videobuf_release(struct videobuf_queue *vq, | |
401 | struct videobuf_buffer *vb) | |
402 | { | |
cca0e549 GL |
403 | struct soc_camera_device *icd = vq->priv_data; |
404 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); | |
405 | struct sh_mobile_ceu_dev *pcdev = ici->priv; | |
406 | unsigned long flags; | |
407 | ||
408 | spin_lock_irqsave(&pcdev->lock, flags); | |
409 | ||
410 | if (pcdev->active == vb) { | |
411 | /* disable capture (release DMA buffer), reset */ | |
412 | ceu_write(pcdev, CAPSR, 1 << 16); | |
413 | pcdev->active = NULL; | |
414 | } | |
415 | ||
416 | if ((vb->state == VIDEOBUF_ACTIVE || vb->state == VIDEOBUF_QUEUED) && | |
417 | !list_empty(&vb->queue)) { | |
418 | vb->state = VIDEOBUF_ERROR; | |
419 | list_del_init(&vb->queue); | |
420 | } | |
421 | ||
422 | spin_unlock_irqrestore(&pcdev->lock, flags); | |
423 | ||
0d3244d6 MD |
424 | free_buffer(vq, container_of(vb, struct sh_mobile_ceu_buffer, vb)); |
425 | } | |
426 | ||
427 | static struct videobuf_queue_ops sh_mobile_ceu_videobuf_ops = { | |
428 | .buf_setup = sh_mobile_ceu_videobuf_setup, | |
429 | .buf_prepare = sh_mobile_ceu_videobuf_prepare, | |
430 | .buf_queue = sh_mobile_ceu_videobuf_queue, | |
431 | .buf_release = sh_mobile_ceu_videobuf_release, | |
432 | }; | |
433 | ||
434 | static irqreturn_t sh_mobile_ceu_irq(int irq, void *data) | |
435 | { | |
436 | struct sh_mobile_ceu_dev *pcdev = data; | |
437 | struct videobuf_buffer *vb; | |
438 | unsigned long flags; | |
439 | ||
440 | spin_lock_irqsave(&pcdev->lock, flags); | |
441 | ||
442 | vb = pcdev->active; | |
cca0e549 GL |
443 | if (!vb) |
444 | /* Stale interrupt from a released buffer */ | |
445 | goto out; | |
446 | ||
0d3244d6 MD |
447 | list_del_init(&vb->queue); |
448 | ||
449 | if (!list_empty(&pcdev->capture)) | |
450 | pcdev->active = list_entry(pcdev->capture.next, | |
451 | struct videobuf_buffer, queue); | |
452 | else | |
453 | pcdev->active = NULL; | |
454 | ||
5cf93f1d KM |
455 | vb->state = (sh_mobile_ceu_capture(pcdev) < 0) ? |
456 | VIDEOBUF_ERROR : VIDEOBUF_DONE; | |
0d3244d6 MD |
457 | do_gettimeofday(&vb->ts); |
458 | vb->field_count++; | |
459 | wake_up(&vb->done); | |
cca0e549 GL |
460 | |
461 | out: | |
0d3244d6 MD |
462 | spin_unlock_irqrestore(&pcdev->lock, flags); |
463 | ||
464 | return IRQ_HANDLED; | |
465 | } | |
466 | ||
1c3bb743 | 467 | /* Called with .video_lock held */ |
0d3244d6 MD |
468 | static int sh_mobile_ceu_add_device(struct soc_camera_device *icd) |
469 | { | |
470 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); | |
471 | struct sh_mobile_ceu_dev *pcdev = ici->priv; | |
6ed7c038 | 472 | int ret; |
0d3244d6 | 473 | |
0d3244d6 | 474 | if (pcdev->icd) |
979ea1dd | 475 | return -EBUSY; |
0d3244d6 | 476 | |
0166b743 | 477 | dev_info(icd->dev.parent, |
0d3244d6 MD |
478 | "SuperH Mobile CEU driver attached to camera %d\n", |
479 | icd->devnum); | |
480 | ||
a79aebfc | 481 | pm_runtime_get_sync(ici->v4l2_dev.dev); |
40e2e092 | 482 | |
6ed7c038 GL |
483 | ret = sh_mobile_ceu_soft_reset(pcdev); |
484 | if (!ret) | |
485 | pcdev->icd = icd; | |
979ea1dd | 486 | |
6ed7c038 | 487 | return ret; |
0d3244d6 MD |
488 | } |
489 | ||
1c3bb743 | 490 | /* Called with .video_lock held */ |
0d3244d6 MD |
491 | static void sh_mobile_ceu_remove_device(struct soc_camera_device *icd) |
492 | { | |
493 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); | |
494 | struct sh_mobile_ceu_dev *pcdev = ici->priv; | |
51354cc3 | 495 | unsigned long flags; |
0d3244d6 MD |
496 | |
497 | BUG_ON(icd != pcdev->icd); | |
498 | ||
499 | /* disable capture, disable interrupts */ | |
500 | ceu_write(pcdev, CEIER, 0); | |
b1de7aeb | 501 | sh_mobile_ceu_soft_reset(pcdev); |
51354cc3 MD |
502 | |
503 | /* make sure active buffer is canceled */ | |
504 | spin_lock_irqsave(&pcdev->lock, flags); | |
505 | if (pcdev->active) { | |
506 | list_del(&pcdev->active->queue); | |
507 | pcdev->active->state = VIDEOBUF_ERROR; | |
508 | wake_up_all(&pcdev->active->done); | |
509 | pcdev->active = NULL; | |
510 | } | |
511 | spin_unlock_irqrestore(&pcdev->lock, flags); | |
512 | ||
a79aebfc | 513 | pm_runtime_put_sync(ici->v4l2_dev.dev); |
40e2e092 | 514 | |
0166b743 | 515 | dev_info(icd->dev.parent, |
0d3244d6 MD |
516 | "SuperH Mobile CEU driver detached from camera %d\n", |
517 | icd->devnum); | |
518 | ||
519 | pcdev->icd = NULL; | |
520 | } | |
521 | ||
961801bb GL |
522 | /* |
523 | * See chapter 29.4.12 "Capture Filter Control Register (CFLCR)" | |
524 | * in SH7722 Hardware Manual | |
525 | */ | |
526 | static unsigned int size_dst(unsigned int src, unsigned int scale) | |
527 | { | |
528 | unsigned int mant_pre = scale >> 12; | |
529 | if (!src || !scale) | |
530 | return src; | |
531 | return ((mant_pre + 2 * (src - 1)) / (2 * mant_pre) - 1) * | |
532 | mant_pre * 4096 / scale + 1; | |
533 | } | |
534 | ||
961801bb GL |
535 | static u16 calc_scale(unsigned int src, unsigned int *dst) |
536 | { | |
537 | u16 scale; | |
538 | ||
539 | if (src == *dst) | |
540 | return 0; | |
541 | ||
542 | scale = (src * 4096 / *dst) & ~7; | |
543 | ||
544 | while (scale > 4096 && size_dst(src, scale) < *dst) | |
545 | scale -= 8; | |
546 | ||
547 | *dst = size_dst(src, scale); | |
548 | ||
549 | return scale; | |
550 | } | |
551 | ||
552 | /* rect is guaranteed to not exceed the scaled camera rectangle */ | |
904078f1 | 553 | static void sh_mobile_ceu_set_rect(struct soc_camera_device *icd, |
6a6c8786 GL |
554 | unsigned int out_width, |
555 | unsigned int out_height) | |
904078f1 GL |
556 | { |
557 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); | |
558 | struct sh_mobile_ceu_cam *cam = icd->host_priv; | |
6a6c8786 | 559 | struct v4l2_rect *rect = &cam->ceu_rect; |
904078f1 | 560 | struct sh_mobile_ceu_dev *pcdev = ici->priv; |
6a6c8786 GL |
561 | unsigned int height, width, cdwdr_width, in_width, in_height; |
562 | unsigned int left_offset, top_offset; | |
904078f1 GL |
563 | u32 camor; |
564 | ||
6a6c8786 GL |
565 | dev_dbg(icd->dev.parent, "Crop %ux%u@%u:%u\n", |
566 | rect->width, rect->height, rect->left, rect->top); | |
904078f1 | 567 | |
6a6c8786 GL |
568 | left_offset = rect->left; |
569 | top_offset = rect->top; | |
904078f1 GL |
570 | |
571 | if (pcdev->image_mode) { | |
6a6c8786 | 572 | in_width = rect->width; |
961801bb | 573 | if (!pcdev->is_16bit) { |
961801bb GL |
574 | in_width *= 2; |
575 | left_offset *= 2; | |
576 | } | |
760697be GL |
577 | width = out_width; |
578 | cdwdr_width = out_width; | |
904078f1 | 579 | } else { |
760697be GL |
580 | int bytes_per_line = soc_mbus_bytes_per_line(out_width, |
581 | icd->current_fmt->host_fmt); | |
582 | unsigned int w_factor; | |
6a6c8786 | 583 | |
760697be | 584 | width = out_width; |
6a6c8786 | 585 | |
760697be GL |
586 | switch (icd->current_fmt->host_fmt->packing) { |
587 | case SOC_MBUS_PACKING_2X8_PADHI: | |
588 | w_factor = 2; | |
589 | break; | |
590 | default: | |
591 | w_factor = 1; | |
592 | } | |
961801bb | 593 | |
760697be GL |
594 | in_width = rect->width * w_factor; |
595 | left_offset = left_offset * w_factor; | |
961801bb | 596 | |
760697be GL |
597 | if (bytes_per_line < 0) |
598 | cdwdr_width = out_width; | |
599 | else | |
600 | cdwdr_width = bytes_per_line; | |
904078f1 GL |
601 | } |
602 | ||
6a6c8786 GL |
603 | height = out_height; |
604 | in_height = rect->height; | |
904078f1 GL |
605 | if (pcdev->is_interlaced) { |
606 | height /= 2; | |
961801bb GL |
607 | in_height /= 2; |
608 | top_offset /= 2; | |
904078f1 GL |
609 | cdwdr_width *= 2; |
610 | } | |
611 | ||
6a6c8786 | 612 | /* Set CAMOR, CAPWR, CFSZR, take care of CDWDR */ |
904078f1 | 613 | camor = left_offset | (top_offset << 16); |
6a6c8786 GL |
614 | |
615 | dev_geo(icd->dev.parent, | |
616 | "CAMOR 0x%x, CAPWR 0x%x, CFSZR 0x%x, CDWDR 0x%x\n", camor, | |
617 | (in_height << 16) | in_width, (height << 16) | width, | |
618 | cdwdr_width); | |
619 | ||
904078f1 | 620 | ceu_write(pcdev, CAMOR, camor); |
961801bb | 621 | ceu_write(pcdev, CAPWR, (in_height << 16) | in_width); |
6a6c8786 | 622 | ceu_write(pcdev, CFSZR, (height << 16) | width); |
904078f1 GL |
623 | ceu_write(pcdev, CDWDR, cdwdr_width); |
624 | } | |
625 | ||
626 | static u32 capture_save_reset(struct sh_mobile_ceu_dev *pcdev) | |
627 | { | |
628 | u32 capsr = ceu_read(pcdev, CAPSR); | |
629 | ceu_write(pcdev, CAPSR, 1 << 16); /* reset, stop capture */ | |
630 | return capsr; | |
631 | } | |
632 | ||
633 | static void capture_restore(struct sh_mobile_ceu_dev *pcdev, u32 capsr) | |
634 | { | |
635 | unsigned long timeout = jiffies + 10 * HZ; | |
636 | ||
637 | /* | |
638 | * Wait until the end of the current frame. It can take a long time, | |
639 | * but if it has been aborted by a CAPSR reset, it shoule exit sooner. | |
640 | */ | |
641 | while ((ceu_read(pcdev, CSTSR) & 1) && time_before(jiffies, timeout)) | |
642 | msleep(1); | |
643 | ||
644 | if (time_after(jiffies, timeout)) { | |
645 | dev_err(pcdev->ici.v4l2_dev.dev, | |
646 | "Timeout waiting for frame end! Interface problem?\n"); | |
647 | return; | |
648 | } | |
649 | ||
650 | /* Wait until reset clears, this shall not hang... */ | |
651 | while (ceu_read(pcdev, CAPSR) & (1 << 16)) | |
652 | udelay(10); | |
653 | ||
654 | /* Anything to restore? */ | |
655 | if (capsr & ~(1 << 16)) | |
656 | ceu_write(pcdev, CAPSR, capsr); | |
657 | } | |
658 | ||
0d3244d6 MD |
659 | static int sh_mobile_ceu_set_bus_param(struct soc_camera_device *icd, |
660 | __u32 pixfmt) | |
661 | { | |
662 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); | |
663 | struct sh_mobile_ceu_dev *pcdev = ici->priv; | |
904078f1 | 664 | int ret; |
0d3244d6 | 665 | unsigned long camera_flags, common_flags, value; |
904078f1 GL |
666 | int yuv_lineskip; |
667 | struct sh_mobile_ceu_cam *cam = icd->host_priv; | |
668 | u32 capsr = capture_save_reset(pcdev); | |
0d3244d6 MD |
669 | |
670 | camera_flags = icd->ops->query_bus_param(icd); | |
671 | common_flags = soc_camera_bus_param_compatible(camera_flags, | |
c354b400 | 672 | make_bus_param(pcdev)); |
0d3244d6 MD |
673 | if (!common_flags) |
674 | return -EINVAL; | |
675 | ||
676 | ret = icd->ops->set_bus_param(icd, common_flags); | |
677 | if (ret < 0) | |
678 | return ret; | |
679 | ||
680 | switch (common_flags & SOCAM_DATAWIDTH_MASK) { | |
681 | case SOCAM_DATAWIDTH_8: | |
904078f1 | 682 | pcdev->is_16bit = 0; |
0d3244d6 MD |
683 | break; |
684 | case SOCAM_DATAWIDTH_16: | |
904078f1 | 685 | pcdev->is_16bit = 1; |
0d3244d6 MD |
686 | break; |
687 | default: | |
688 | return -EINVAL; | |
689 | } | |
690 | ||
691 | ceu_write(pcdev, CRCNTR, 0); | |
692 | ceu_write(pcdev, CRCMPR, 0); | |
693 | ||
8be65dc5 | 694 | value = 0x00000010; /* data fetch by default */ |
961801bb | 695 | yuv_lineskip = 0; |
8be65dc5 | 696 | |
760697be | 697 | switch (icd->current_fmt->host_fmt->fourcc) { |
8be65dc5 MD |
698 | case V4L2_PIX_FMT_NV12: |
699 | case V4L2_PIX_FMT_NV21: | |
700 | yuv_lineskip = 1; /* skip for NV12/21, no skip for NV16/61 */ | |
9e4a56d2 MD |
701 | /* fall-through */ |
702 | case V4L2_PIX_FMT_NV16: | |
703 | case V4L2_PIX_FMT_NV61: | |
760697be GL |
704 | switch (cam->code) { |
705 | case V4L2_MBUS_FMT_YUYV8_2X8_BE: | |
8be65dc5 MD |
706 | value = 0x00000000; /* Cb0, Y0, Cr0, Y1 */ |
707 | break; | |
760697be | 708 | case V4L2_MBUS_FMT_YVYU8_2X8_BE: |
8be65dc5 MD |
709 | value = 0x00000100; /* Cr0, Y0, Cb0, Y1 */ |
710 | break; | |
760697be | 711 | case V4L2_MBUS_FMT_YUYV8_2X8_LE: |
8be65dc5 MD |
712 | value = 0x00000200; /* Y0, Cb0, Y1, Cr0 */ |
713 | break; | |
760697be | 714 | case V4L2_MBUS_FMT_YVYU8_2X8_LE: |
8be65dc5 MD |
715 | value = 0x00000300; /* Y0, Cr0, Y1, Cb0 */ |
716 | break; | |
717 | default: | |
718 | BUG(); | |
719 | } | |
720 | } | |
721 | ||
760697be GL |
722 | if (icd->current_fmt->host_fmt->fourcc == V4L2_PIX_FMT_NV21 || |
723 | icd->current_fmt->host_fmt->fourcc == V4L2_PIX_FMT_NV61) | |
9e4a56d2 | 724 | value ^= 0x00000100; /* swap U, V to change from NV1x->NVx1 */ |
8be65dc5 | 725 | |
7a1a8164 MD |
726 | value |= common_flags & SOCAM_VSYNC_ACTIVE_LOW ? 1 << 1 : 0; |
727 | value |= common_flags & SOCAM_HSYNC_ACTIVE_LOW ? 1 << 0 : 0; | |
904078f1 | 728 | value |= pcdev->is_16bit ? 1 << 12 : 0; |
0d3244d6 MD |
729 | ceu_write(pcdev, CAMCR, value); |
730 | ||
731 | ceu_write(pcdev, CAPCR, 0x00300000); | |
e802967c | 732 | ceu_write(pcdev, CAIFR, pcdev->is_interlaced ? 0x101 : 0); |
0d3244d6 | 733 | |
6a6c8786 | 734 | sh_mobile_ceu_set_rect(icd, icd->user_width, icd->user_height); |
0d3244d6 MD |
735 | mdelay(1); |
736 | ||
961801bb | 737 | ceu_write(pcdev, CFLCR, pcdev->cflcr); |
dd54203b | 738 | |
5d28d525 GL |
739 | /* |
740 | * A few words about byte order (observed in Big Endian mode) | |
dd54203b MD |
741 | * |
742 | * In data fetch mode bytes are received in chunks of 8 bytes. | |
743 | * D0, D1, D2, D3, D4, D5, D6, D7 (D0 received first) | |
744 | * | |
745 | * The data is however by default written to memory in reverse order: | |
746 | * D7, D6, D5, D4, D3, D2, D1, D0 (D7 written to lowest byte) | |
747 | * | |
748 | * The lowest three bits of CDOCR allows us to do swapping, | |
2c0a072e MD |
749 | * using 7 we swap the data bytes to match the incoming order: |
750 | * D0, D1, D2, D3, D4, D5, D6, D7 | |
dd54203b | 751 | */ |
8be65dc5 MD |
752 | value = 0x00000017; |
753 | if (yuv_lineskip) | |
754 | value &= ~0x00000010; /* convert 4:2:2 -> 4:2:0 */ | |
755 | ||
756 | ceu_write(pcdev, CDOCR, value); | |
0d3244d6 MD |
757 | ceu_write(pcdev, CFWCR, 0); /* keep "datafetch firewall" disabled */ |
758 | ||
6a6c8786 | 759 | dev_dbg(icd->dev.parent, "S_FMT successful for %c%c%c%c %ux%u\n", |
904078f1 GL |
760 | pixfmt & 0xff, (pixfmt >> 8) & 0xff, |
761 | (pixfmt >> 16) & 0xff, (pixfmt >> 24) & 0xff, | |
6a6c8786 | 762 | icd->user_width, icd->user_height); |
904078f1 GL |
763 | |
764 | capture_restore(pcdev, capsr); | |
765 | ||
0d3244d6 | 766 | /* not in bundle mode: skip CBDSR, CDAYR2, CDACR2, CDBYR2, CDBCR2 */ |
0d3244d6 MD |
767 | return 0; |
768 | } | |
769 | ||
760697be GL |
770 | static int sh_mobile_ceu_try_bus_param(struct soc_camera_device *icd, |
771 | unsigned char buswidth) | |
0d3244d6 MD |
772 | { |
773 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); | |
774 | struct sh_mobile_ceu_dev *pcdev = ici->priv; | |
775 | unsigned long camera_flags, common_flags; | |
776 | ||
777 | camera_flags = icd->ops->query_bus_param(icd); | |
778 | common_flags = soc_camera_bus_param_compatible(camera_flags, | |
c354b400 | 779 | make_bus_param(pcdev)); |
760697be GL |
780 | if (!common_flags || buswidth > 16 || |
781 | (buswidth > 8 && !(common_flags & SOCAM_DATAWIDTH_16))) | |
0d3244d6 MD |
782 | return -EINVAL; |
783 | ||
784 | return 0; | |
785 | } | |
786 | ||
760697be | 787 | static const struct soc_mbus_pixelfmt sh_mobile_ceu_formats[] = { |
9e4a56d2 | 788 | { |
760697be GL |
789 | .fourcc = V4L2_PIX_FMT_NV12, |
790 | .name = "NV12", | |
791 | .bits_per_sample = 12, | |
792 | .packing = SOC_MBUS_PACKING_NONE, | |
793 | .order = SOC_MBUS_ORDER_LE, | |
794 | }, { | |
795 | .fourcc = V4L2_PIX_FMT_NV21, | |
796 | .name = "NV21", | |
797 | .bits_per_sample = 12, | |
798 | .packing = SOC_MBUS_PACKING_NONE, | |
799 | .order = SOC_MBUS_ORDER_LE, | |
800 | }, { | |
801 | .fourcc = V4L2_PIX_FMT_NV16, | |
802 | .name = "NV16", | |
803 | .bits_per_sample = 16, | |
804 | .packing = SOC_MBUS_PACKING_NONE, | |
805 | .order = SOC_MBUS_ORDER_LE, | |
806 | }, { | |
807 | .fourcc = V4L2_PIX_FMT_NV61, | |
808 | .name = "NV61", | |
809 | .bits_per_sample = 16, | |
810 | .packing = SOC_MBUS_PACKING_NONE, | |
811 | .order = SOC_MBUS_ORDER_LE, | |
9e4a56d2 | 812 | }, |
8be65dc5 MD |
813 | }; |
814 | ||
760697be GL |
815 | /* This will be corrected as we get more formats */ |
816 | static bool sh_mobile_ceu_packing_supported(const struct soc_mbus_pixelfmt *fmt) | |
817 | { | |
818 | return fmt->packing == SOC_MBUS_PACKING_NONE || | |
819 | (fmt->bits_per_sample == 8 && | |
820 | fmt->packing == SOC_MBUS_PACKING_2X8_PADHI) || | |
821 | (fmt->bits_per_sample > 8 && | |
822 | fmt->packing == SOC_MBUS_PACKING_EXTEND16); | |
823 | } | |
824 | ||
9414de39 MD |
825 | static int sh_mobile_ceu_get_formats(struct soc_camera_device *icd, int idx, |
826 | struct soc_camera_format_xlate *xlate) | |
827 | { | |
760697be | 828 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
6a6c8786 | 829 | struct device *dev = icd->dev.parent; |
8be65dc5 | 830 | int ret, k, n; |
9414de39 | 831 | int formats = 0; |
904078f1 | 832 | struct sh_mobile_ceu_cam *cam; |
760697be GL |
833 | enum v4l2_mbus_pixelcode code; |
834 | const struct soc_mbus_pixelfmt *fmt; | |
9414de39 | 835 | |
760697be GL |
836 | ret = v4l2_subdev_call(sd, video, enum_mbus_fmt, idx, &code); |
837 | if (ret < 0) | |
838 | /* No more formats */ | |
839 | return 0; | |
840 | ||
841 | fmt = soc_mbus_get_fmtdesc(code); | |
842 | if (!fmt) { | |
843 | dev_err(icd->dev.parent, | |
844 | "Invalid format code #%d: %d\n", idx, code); | |
845 | return -EINVAL; | |
846 | } | |
847 | ||
848 | ret = sh_mobile_ceu_try_bus_param(icd, fmt->bits_per_sample); | |
9414de39 MD |
849 | if (ret < 0) |
850 | return 0; | |
851 | ||
904078f1 GL |
852 | if (!icd->host_priv) { |
853 | cam = kzalloc(sizeof(*cam), GFP_KERNEL); | |
854 | if (!cam) | |
855 | return -ENOMEM; | |
856 | ||
857 | icd->host_priv = cam; | |
858 | } else { | |
859 | cam = icd->host_priv; | |
860 | } | |
861 | ||
c8329acc GL |
862 | /* Beginning of a pass */ |
863 | if (!idx) | |
904078f1 | 864 | cam->extra_fmt = NULL; |
c8329acc | 865 | |
760697be GL |
866 | switch (code) { |
867 | case V4L2_MBUS_FMT_YUYV8_2X8_BE: | |
868 | case V4L2_MBUS_FMT_YVYU8_2X8_BE: | |
869 | case V4L2_MBUS_FMT_YUYV8_2X8_LE: | |
870 | case V4L2_MBUS_FMT_YVYU8_2X8_LE: | |
904078f1 | 871 | if (cam->extra_fmt) |
760697be | 872 | break; |
c8329acc GL |
873 | |
874 | /* | |
875 | * Our case is simple so far: for any of the above four camera | |
876 | * formats we add all our four synthesized NV* formats, so, | |
877 | * just marking the device with a single flag suffices. If | |
878 | * the format generation rules are more complex, you would have | |
879 | * to actually hang your already added / counted formats onto | |
880 | * the host_priv pointer and check whether the format you're | |
881 | * going to add now is already there. | |
882 | */ | |
760697be | 883 | cam->extra_fmt = sh_mobile_ceu_formats; |
c8329acc | 884 | |
8be65dc5 MD |
885 | n = ARRAY_SIZE(sh_mobile_ceu_formats); |
886 | formats += n; | |
887 | for (k = 0; xlate && k < n; k++) { | |
760697be GL |
888 | xlate->host_fmt = &sh_mobile_ceu_formats[k]; |
889 | xlate->code = code; | |
8be65dc5 | 890 | xlate++; |
760697be GL |
891 | dev_dbg(dev, "Providing format %s using code %d\n", |
892 | sh_mobile_ceu_formats[k].name, code); | |
8be65dc5 | 893 | } |
760697be | 894 | break; |
9414de39 | 895 | default: |
760697be GL |
896 | if (!sh_mobile_ceu_packing_supported(fmt)) |
897 | return 0; | |
898 | } | |
899 | ||
900 | /* Generic pass-through */ | |
901 | formats++; | |
902 | if (xlate) { | |
903 | xlate->host_fmt = fmt; | |
904 | xlate->code = code; | |
905 | xlate++; | |
906 | dev_dbg(dev, "Providing format %s in pass-through mode\n", | |
907 | xlate->host_fmt->name); | |
9414de39 MD |
908 | } |
909 | ||
910 | return formats; | |
911 | } | |
912 | ||
904078f1 GL |
913 | static void sh_mobile_ceu_put_formats(struct soc_camera_device *icd) |
914 | { | |
915 | kfree(icd->host_priv); | |
916 | icd->host_priv = NULL; | |
917 | } | |
918 | ||
961801bb | 919 | /* Check if any dimension of r1 is smaller than respective one of r2 */ |
904078f1 GL |
920 | static bool is_smaller(struct v4l2_rect *r1, struct v4l2_rect *r2) |
921 | { | |
922 | return r1->width < r2->width || r1->height < r2->height; | |
923 | } | |
924 | ||
961801bb GL |
925 | /* Check if r1 fails to cover r2 */ |
926 | static bool is_inside(struct v4l2_rect *r1, struct v4l2_rect *r2) | |
927 | { | |
928 | return r1->left > r2->left || r1->top > r2->top || | |
929 | r1->left + r1->width < r2->left + r2->width || | |
930 | r1->top + r1->height < r2->top + r2->height; | |
931 | } | |
932 | ||
6a6c8786 GL |
933 | static unsigned int scale_down(unsigned int size, unsigned int scale) |
934 | { | |
935 | return (size * 4096 + scale / 2) / scale; | |
936 | } | |
937 | ||
938 | static unsigned int scale_up(unsigned int size, unsigned int scale) | |
939 | { | |
940 | return (size * scale + 2048) / 4096; | |
941 | } | |
942 | ||
943 | static unsigned int calc_generic_scale(unsigned int input, unsigned int output) | |
944 | { | |
945 | return (input * 4096 + output / 2) / output; | |
946 | } | |
947 | ||
948 | static int client_g_rect(struct v4l2_subdev *sd, struct v4l2_rect *rect) | |
949 | { | |
950 | struct v4l2_crop crop; | |
951 | struct v4l2_cropcap cap; | |
952 | int ret; | |
953 | ||
954 | crop.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; | |
955 | ||
956 | ret = v4l2_subdev_call(sd, video, g_crop, &crop); | |
957 | if (!ret) { | |
958 | *rect = crop.c; | |
959 | return ret; | |
960 | } | |
961 | ||
962 | /* Camera driver doesn't support .g_crop(), assume default rectangle */ | |
963 | cap.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; | |
964 | ||
965 | ret = v4l2_subdev_call(sd, video, cropcap, &cap); | |
966 | if (ret < 0) | |
967 | return ret; | |
968 | ||
969 | *rect = cap.defrect; | |
970 | ||
971 | return ret; | |
972 | } | |
973 | ||
961801bb | 974 | /* |
6a6c8786 | 975 | * The common for both scaling and cropping iterative approach is: |
961801bb GL |
976 | * 1. try if the client can produce exactly what requested by the user |
977 | * 2. if (1) failed, try to double the client image until we get one big enough | |
978 | * 3. if (2) failed, try to request the maximum image | |
979 | */ | |
6a6c8786 GL |
980 | static int client_s_crop(struct v4l2_subdev *sd, struct v4l2_crop *crop, |
981 | struct v4l2_crop *cam_crop) | |
09e231b3 | 982 | { |
6a6c8786 GL |
983 | struct v4l2_rect *rect = &crop->c, *cam_rect = &cam_crop->c; |
984 | struct device *dev = sd->v4l2_dev->dev; | |
985 | struct v4l2_cropcap cap; | |
904078f1 | 986 | int ret; |
6a6c8786 | 987 | unsigned int width, height; |
904078f1 | 988 | |
6a6c8786 GL |
989 | v4l2_subdev_call(sd, video, s_crop, crop); |
990 | ret = client_g_rect(sd, cam_rect); | |
991 | if (ret < 0) | |
992 | return ret; | |
961801bb | 993 | |
6a6c8786 GL |
994 | /* |
995 | * Now cam_crop contains the current camera input rectangle, and it must | |
996 | * be within camera cropcap bounds | |
997 | */ | |
998 | if (!memcmp(rect, cam_rect, sizeof(*rect))) { | |
999 | /* Even if camera S_CROP failed, but camera rectangle matches */ | |
1000 | dev_dbg(dev, "Camera S_CROP successful for %ux%u@%u:%u\n", | |
1001 | rect->width, rect->height, rect->left, rect->top); | |
1002 | return 0; | |
904078f1 GL |
1003 | } |
1004 | ||
6a6c8786 GL |
1005 | /* Try to fix cropping, that camera hasn't managed to set */ |
1006 | dev_geo(dev, "Fix camera S_CROP for %ux%u@%u:%u to %ux%u@%u:%u\n", | |
1007 | cam_rect->width, cam_rect->height, | |
08590b96 | 1008 | cam_rect->left, cam_rect->top, |
6a6c8786 GL |
1009 | rect->width, rect->height, rect->left, rect->top); |
1010 | ||
1011 | /* We need sensor maximum rectangle */ | |
1012 | ret = v4l2_subdev_call(sd, video, cropcap, &cap); | |
1013 | if (ret < 0) | |
1014 | return ret; | |
1015 | ||
1016 | soc_camera_limit_side(&rect->left, &rect->width, cap.bounds.left, 2, | |
1017 | cap.bounds.width); | |
1018 | soc_camera_limit_side(&rect->top, &rect->height, cap.bounds.top, 4, | |
1019 | cap.bounds.height); | |
904078f1 GL |
1020 | |
1021 | /* | |
1022 | * Popular special case - some cameras can only handle fixed sizes like | |
1023 | * QVGA, VGA,... Take care to avoid infinite loop. | |
1024 | */ | |
6a6c8786 GL |
1025 | width = max(cam_rect->width, 2); |
1026 | height = max(cam_rect->height, 2); | |
1027 | ||
1028 | while (!ret && (is_smaller(cam_rect, rect) || | |
1029 | is_inside(cam_rect, rect)) && | |
1030 | (cap.bounds.width > width || cap.bounds.height > height)) { | |
961801bb GL |
1031 | |
1032 | width *= 2; | |
1033 | height *= 2; | |
6a6c8786 | 1034 | |
08590b96 GL |
1035 | cam_rect->width = width; |
1036 | cam_rect->height = height; | |
904078f1 | 1037 | |
6a6c8786 GL |
1038 | /* |
1039 | * We do not know what capabilities the camera has to set up | |
1040 | * left and top borders. We could try to be smarter in iterating | |
1041 | * them, e.g., if camera current left is to the right of the | |
1042 | * target left, set it to the middle point between the current | |
1043 | * left and minimum left. But that would add too much | |
1044 | * complexity: we would have to iterate each border separately. | |
1045 | */ | |
1046 | if (cam_rect->left > rect->left) | |
1047 | cam_rect->left = cap.bounds.left; | |
961801bb | 1048 | |
6a6c8786 GL |
1049 | if (cam_rect->left + cam_rect->width < rect->left + rect->width) |
1050 | cam_rect->width = rect->left + rect->width - | |
08590b96 | 1051 | cam_rect->left; |
961801bb | 1052 | |
6a6c8786 GL |
1053 | if (cam_rect->top > rect->top) |
1054 | cam_rect->top = cap.bounds.top; | |
961801bb | 1055 | |
6a6c8786 GL |
1056 | if (cam_rect->top + cam_rect->height < rect->top + rect->height) |
1057 | cam_rect->height = rect->top + rect->height - | |
08590b96 | 1058 | cam_rect->top; |
961801bb | 1059 | |
6a6c8786 GL |
1060 | v4l2_subdev_call(sd, video, s_crop, cam_crop); |
1061 | ret = client_g_rect(sd, cam_rect); | |
1062 | dev_geo(dev, "Camera S_CROP %d for %ux%u@%u:%u\n", ret, | |
1063 | cam_rect->width, cam_rect->height, | |
08590b96 | 1064 | cam_rect->left, cam_rect->top); |
904078f1 GL |
1065 | } |
1066 | ||
6a6c8786 GL |
1067 | /* S_CROP must not modify the rectangle */ |
1068 | if (is_smaller(cam_rect, rect) || is_inside(cam_rect, rect)) { | |
904078f1 GL |
1069 | /* |
1070 | * The camera failed to configure a suitable cropping, | |
1071 | * we cannot use the current rectangle, set to max | |
1072 | */ | |
6a6c8786 GL |
1073 | *cam_rect = cap.bounds; |
1074 | v4l2_subdev_call(sd, video, s_crop, cam_crop); | |
1075 | ret = client_g_rect(sd, cam_rect); | |
1076 | dev_geo(dev, "Camera S_CROP %d for max %ux%u@%u:%u\n", ret, | |
1077 | cam_rect->width, cam_rect->height, | |
08590b96 | 1078 | cam_rect->left, cam_rect->top); |
904078f1 GL |
1079 | } |
1080 | ||
6a6c8786 GL |
1081 | return ret; |
1082 | } | |
1083 | ||
1084 | static int get_camera_scales(struct v4l2_subdev *sd, struct v4l2_rect *rect, | |
1085 | unsigned int *scale_h, unsigned int *scale_v) | |
1086 | { | |
760697be | 1087 | struct v4l2_mbus_framefmt mf; |
6a6c8786 GL |
1088 | int ret; |
1089 | ||
760697be | 1090 | ret = v4l2_subdev_call(sd, video, g_mbus_fmt, &mf); |
6a6c8786 GL |
1091 | if (ret < 0) |
1092 | return ret; | |
1093 | ||
760697be GL |
1094 | *scale_h = calc_generic_scale(rect->width, mf.width); |
1095 | *scale_v = calc_generic_scale(rect->height, mf.height); | |
6a6c8786 GL |
1096 | |
1097 | return 0; | |
1098 | } | |
1099 | ||
1100 | static int get_camera_subwin(struct soc_camera_device *icd, | |
1101 | struct v4l2_rect *cam_subrect, | |
1102 | unsigned int cam_hscale, unsigned int cam_vscale) | |
1103 | { | |
1104 | struct sh_mobile_ceu_cam *cam = icd->host_priv; | |
1105 | struct v4l2_rect *ceu_rect = &cam->ceu_rect; | |
1106 | ||
1107 | if (!ceu_rect->width) { | |
1108 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); | |
1109 | struct device *dev = icd->dev.parent; | |
760697be | 1110 | struct v4l2_mbus_framefmt mf; |
6a6c8786 GL |
1111 | int ret; |
1112 | /* First time */ | |
1113 | ||
760697be | 1114 | ret = v4l2_subdev_call(sd, video, g_mbus_fmt, &mf); |
6a6c8786 GL |
1115 | if (ret < 0) |
1116 | return ret; | |
1117 | ||
760697be | 1118 | dev_geo(dev, "camera fmt %ux%u\n", mf.width, mf.height); |
6a6c8786 | 1119 | |
760697be | 1120 | if (mf.width > 2560) { |
6a6c8786 | 1121 | ceu_rect->width = 2560; |
760697be | 1122 | ceu_rect->left = (mf.width - 2560) / 2; |
6a6c8786 | 1123 | } else { |
760697be | 1124 | ceu_rect->width = mf.width; |
6a6c8786 GL |
1125 | ceu_rect->left = 0; |
1126 | } | |
1127 | ||
760697be | 1128 | if (mf.height > 1920) { |
6a6c8786 | 1129 | ceu_rect->height = 1920; |
760697be | 1130 | ceu_rect->top = (mf.height - 1920) / 2; |
6a6c8786 | 1131 | } else { |
760697be | 1132 | ceu_rect->height = mf.height; |
6a6c8786 GL |
1133 | ceu_rect->top = 0; |
1134 | } | |
1135 | ||
1136 | dev_geo(dev, "initialised CEU rect %ux%u@%u:%u\n", | |
1137 | ceu_rect->width, ceu_rect->height, | |
1138 | ceu_rect->left, ceu_rect->top); | |
1139 | } | |
1140 | ||
1141 | cam_subrect->width = scale_up(ceu_rect->width, cam_hscale); | |
1142 | cam_subrect->left = scale_up(ceu_rect->left, cam_hscale); | |
1143 | cam_subrect->height = scale_up(ceu_rect->height, cam_vscale); | |
1144 | cam_subrect->top = scale_up(ceu_rect->top, cam_vscale); | |
1145 | ||
1146 | return 0; | |
1147 | } | |
1148 | ||
760697be GL |
1149 | static int client_s_fmt(struct soc_camera_device *icd, |
1150 | struct v4l2_mbus_framefmt *mf, bool ceu_can_scale) | |
6a6c8786 GL |
1151 | { |
1152 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); | |
1153 | struct device *dev = icd->dev.parent; | |
760697be | 1154 | unsigned int width = mf->width, height = mf->height, tmp_w, tmp_h; |
6a6c8786 GL |
1155 | unsigned int max_width, max_height; |
1156 | struct v4l2_cropcap cap; | |
1157 | int ret; | |
1158 | ||
1159 | cap.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; | |
1160 | ||
1161 | ret = v4l2_subdev_call(sd, video, cropcap, &cap); | |
1162 | if (ret < 0) | |
1163 | return ret; | |
1164 | ||
1165 | max_width = min(cap.bounds.width, 2560); | |
1166 | max_height = min(cap.bounds.height, 1920); | |
1167 | ||
760697be | 1168 | ret = v4l2_subdev_call(sd, video, s_mbus_fmt, mf); |
6a6c8786 GL |
1169 | if (ret < 0) |
1170 | return ret; | |
1171 | ||
760697be | 1172 | dev_geo(dev, "camera scaled to %ux%u\n", mf->width, mf->height); |
6a6c8786 | 1173 | |
760697be | 1174 | if ((width == mf->width && height == mf->height) || !ceu_can_scale) |
6a6c8786 GL |
1175 | return 0; |
1176 | ||
1177 | /* Camera set a format, but geometry is not precise, try to improve */ | |
760697be GL |
1178 | tmp_w = mf->width; |
1179 | tmp_h = mf->height; | |
6a6c8786 GL |
1180 | |
1181 | /* width <= max_width && height <= max_height - guaranteed by try_fmt */ | |
1182 | while ((width > tmp_w || height > tmp_h) && | |
1183 | tmp_w < max_width && tmp_h < max_height) { | |
1184 | tmp_w = min(2 * tmp_w, max_width); | |
1185 | tmp_h = min(2 * tmp_h, max_height); | |
760697be GL |
1186 | mf->width = tmp_w; |
1187 | mf->height = tmp_h; | |
1188 | ret = v4l2_subdev_call(sd, video, s_mbus_fmt, mf); | |
6a6c8786 | 1189 | dev_geo(dev, "Camera scaled to %ux%u\n", |
760697be | 1190 | mf->width, mf->height); |
6a6c8786 GL |
1191 | if (ret < 0) { |
1192 | /* This shouldn't happen */ | |
1193 | dev_err(dev, "Client failed to set format: %d\n", ret); | |
1194 | return ret; | |
1195 | } | |
1196 | } | |
1197 | ||
1198 | return 0; | |
1199 | } | |
1200 | ||
1201 | /** | |
1202 | * @rect - camera cropped rectangle | |
1203 | * @sub_rect - CEU cropped rectangle, mapped back to camera input area | |
1204 | * @ceu_rect - on output calculated CEU crop rectangle | |
1205 | */ | |
1206 | static int client_scale(struct soc_camera_device *icd, struct v4l2_rect *rect, | |
1207 | struct v4l2_rect *sub_rect, struct v4l2_rect *ceu_rect, | |
760697be | 1208 | struct v4l2_mbus_framefmt *mf, bool ceu_can_scale) |
6a6c8786 GL |
1209 | { |
1210 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); | |
1211 | struct sh_mobile_ceu_cam *cam = icd->host_priv; | |
1212 | struct device *dev = icd->dev.parent; | |
760697be | 1213 | struct v4l2_mbus_framefmt mf_tmp = *mf; |
6a6c8786 GL |
1214 | unsigned int scale_h, scale_v; |
1215 | int ret; | |
1216 | ||
1217 | /* 5. Apply iterative camera S_FMT for camera user window. */ | |
760697be | 1218 | ret = client_s_fmt(icd, &mf_tmp, ceu_can_scale); |
6a6c8786 GL |
1219 | if (ret < 0) |
1220 | return ret; | |
1221 | ||
1222 | dev_geo(dev, "5: camera scaled to %ux%u\n", | |
760697be | 1223 | mf_tmp.width, mf_tmp.height); |
6a6c8786 GL |
1224 | |
1225 | /* 6. Retrieve camera output window (g_fmt) */ | |
1226 | ||
760697be | 1227 | /* unneeded - it is already in "mf_tmp" */ |
6a6c8786 GL |
1228 | |
1229 | /* 7. Calculate new camera scales. */ | |
1230 | ret = get_camera_scales(sd, rect, &scale_h, &scale_v); | |
1231 | if (ret < 0) | |
1232 | return ret; | |
1233 | ||
1234 | dev_geo(dev, "7: camera scales %u:%u\n", scale_h, scale_v); | |
1235 | ||
760697be GL |
1236 | cam->cam_width = mf_tmp.width; |
1237 | cam->cam_height = mf_tmp.height; | |
1238 | mf->width = mf_tmp.width; | |
1239 | mf->height = mf_tmp.height; | |
1240 | mf->colorspace = mf_tmp.colorspace; | |
904078f1 GL |
1241 | |
1242 | /* | |
6a6c8786 GL |
1243 | * 8. Calculate new CEU crop - apply camera scales to previously |
1244 | * calculated "effective" crop. | |
904078f1 | 1245 | */ |
6a6c8786 GL |
1246 | ceu_rect->left = scale_down(sub_rect->left, scale_h); |
1247 | ceu_rect->width = scale_down(sub_rect->width, scale_h); | |
1248 | ceu_rect->top = scale_down(sub_rect->top, scale_v); | |
1249 | ceu_rect->height = scale_down(sub_rect->height, scale_v); | |
1250 | ||
1251 | dev_geo(dev, "8: new CEU rect %ux%u@%u:%u\n", | |
1252 | ceu_rect->width, ceu_rect->height, | |
1253 | ceu_rect->left, ceu_rect->top); | |
1254 | ||
1255 | return 0; | |
1256 | } | |
1257 | ||
1258 | /* Get combined scales */ | |
1259 | static int get_scales(struct soc_camera_device *icd, | |
1260 | unsigned int *scale_h, unsigned int *scale_v) | |
1261 | { | |
1262 | struct sh_mobile_ceu_cam *cam = icd->host_priv; | |
1263 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); | |
1264 | struct v4l2_crop cam_crop; | |
1265 | unsigned int width_in, height_in; | |
1266 | int ret; | |
904078f1 | 1267 | |
6a6c8786 | 1268 | cam_crop.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; |
904078f1 | 1269 | |
6a6c8786 GL |
1270 | ret = client_g_rect(sd, &cam_crop.c); |
1271 | if (ret < 0) | |
1272 | return ret; | |
904078f1 | 1273 | |
6a6c8786 GL |
1274 | ret = get_camera_scales(sd, &cam_crop.c, scale_h, scale_v); |
1275 | if (ret < 0) | |
1276 | return ret; | |
961801bb | 1277 | |
6a6c8786 GL |
1278 | width_in = scale_up(cam->ceu_rect.width, *scale_h); |
1279 | height_in = scale_up(cam->ceu_rect.height, *scale_v); | |
961801bb | 1280 | |
8cf1fec8 GL |
1281 | *scale_h = calc_generic_scale(width_in, icd->user_width); |
1282 | *scale_v = calc_generic_scale(height_in, icd->user_height); | |
6a6c8786 GL |
1283 | |
1284 | return 0; | |
1285 | } | |
1286 | ||
1287 | /* | |
1288 | * CEU can scale and crop, but we don't want to waste bandwidth and kill the | |
1289 | * framerate by always requesting the maximum image from the client. See | |
1290 | * Documentation/video4linux/sh_mobile_camera_ceu.txt for a description of | |
1291 | * scaling and cropping algorithms and for the meaning of referenced here steps. | |
1292 | */ | |
1293 | static int sh_mobile_ceu_set_crop(struct soc_camera_device *icd, | |
1294 | struct v4l2_crop *a) | |
1295 | { | |
1296 | struct v4l2_rect *rect = &a->c; | |
1297 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); | |
1298 | struct sh_mobile_ceu_dev *pcdev = ici->priv; | |
1299 | struct v4l2_crop cam_crop; | |
1300 | struct sh_mobile_ceu_cam *cam = icd->host_priv; | |
1301 | struct v4l2_rect *cam_rect = &cam_crop.c, *ceu_rect = &cam->ceu_rect; | |
1302 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); | |
1303 | struct device *dev = icd->dev.parent; | |
760697be | 1304 | struct v4l2_mbus_framefmt mf; |
6a6c8786 GL |
1305 | unsigned int scale_comb_h, scale_comb_v, scale_ceu_h, scale_ceu_v, |
1306 | out_width, out_height; | |
1307 | u32 capsr, cflcr; | |
1308 | int ret; | |
1309 | ||
1310 | /* 1. Calculate current combined scales. */ | |
1311 | ret = get_scales(icd, &scale_comb_h, &scale_comb_v); | |
1312 | if (ret < 0) | |
1313 | return ret; | |
1314 | ||
1315 | dev_geo(dev, "1: combined scales %u:%u\n", scale_comb_h, scale_comb_v); | |
1316 | ||
1317 | /* 2. Apply iterative camera S_CROP for new input window. */ | |
1318 | ret = client_s_crop(sd, a, &cam_crop); | |
1319 | if (ret < 0) | |
1320 | return ret; | |
1321 | ||
1322 | dev_geo(dev, "2: camera cropped to %ux%u@%u:%u\n", | |
1323 | cam_rect->width, cam_rect->height, | |
1324 | cam_rect->left, cam_rect->top); | |
1325 | ||
1326 | /* On success cam_crop contains current camera crop */ | |
1327 | ||
1328 | /* | |
1329 | * 3. If old combined scales applied to new crop produce an impossible | |
1330 | * user window, adjust scales to produce nearest possible window. | |
1331 | */ | |
1332 | out_width = scale_down(rect->width, scale_comb_h); | |
1333 | out_height = scale_down(rect->height, scale_comb_v); | |
1334 | ||
1335 | if (out_width > 2560) | |
1336 | out_width = 2560; | |
1337 | else if (out_width < 2) | |
1338 | out_width = 2; | |
1339 | ||
1340 | if (out_height > 1920) | |
1341 | out_height = 1920; | |
1342 | else if (out_height < 4) | |
1343 | out_height = 4; | |
1344 | ||
1345 | dev_geo(dev, "3: Adjusted output %ux%u\n", out_width, out_height); | |
1346 | ||
1347 | /* 4. Use G_CROP to retrieve actual input window: already in cam_crop */ | |
1348 | ||
1349 | /* | |
1350 | * 5. Using actual input window and calculated combined scales calculate | |
1351 | * camera target output window. | |
1352 | */ | |
760697be GL |
1353 | mf.width = scale_down(cam_rect->width, scale_comb_h); |
1354 | mf.height = scale_down(cam_rect->height, scale_comb_v); | |
6a6c8786 | 1355 | |
760697be | 1356 | dev_geo(dev, "5: camera target %ux%u\n", mf.width, mf.height); |
6a6c8786 GL |
1357 | |
1358 | /* 6. - 9. */ | |
760697be GL |
1359 | mf.code = cam->code; |
1360 | mf.field = pcdev->is_interlaced ? V4L2_FIELD_INTERLACED : | |
1361 | V4L2_FIELD_NONE; | |
6a6c8786 GL |
1362 | |
1363 | capsr = capture_save_reset(pcdev); | |
1364 | dev_dbg(dev, "CAPSR 0x%x, CFLCR 0x%x\n", capsr, pcdev->cflcr); | |
1365 | ||
1366 | /* Make relative to camera rectangle */ | |
760697be GL |
1367 | rect->left -= cam_rect->left; |
1368 | rect->top -= cam_rect->top; | |
6a6c8786 | 1369 | |
760697be | 1370 | ret = client_scale(icd, cam_rect, rect, ceu_rect, &mf, |
6a6c8786 GL |
1371 | pcdev->image_mode && !pcdev->is_interlaced); |
1372 | ||
1373 | dev_geo(dev, "6-9: %d\n", ret); | |
1374 | ||
1375 | /* 10. Use CEU cropping to crop to the new window. */ | |
1376 | sh_mobile_ceu_set_rect(icd, out_width, out_height); | |
1377 | ||
1378 | dev_geo(dev, "10: CEU cropped to %ux%u@%u:%u\n", | |
1379 | ceu_rect->width, ceu_rect->height, | |
1380 | ceu_rect->left, ceu_rect->top); | |
1381 | ||
1382 | /* | |
1383 | * 11. Calculate CEU scales from camera scales from results of (10) and | |
1384 | * user window from (3) | |
1385 | */ | |
1386 | scale_ceu_h = calc_scale(ceu_rect->width, &out_width); | |
1387 | scale_ceu_v = calc_scale(ceu_rect->height, &out_height); | |
1388 | ||
1389 | dev_geo(dev, "11: CEU scales %u:%u\n", scale_ceu_h, scale_ceu_v); | |
1390 | ||
1391 | /* 12. Apply CEU scales. */ | |
1392 | cflcr = scale_ceu_h | (scale_ceu_v << 16); | |
1393 | if (cflcr != pcdev->cflcr) { | |
1394 | pcdev->cflcr = cflcr; | |
1395 | ceu_write(pcdev, CFLCR, cflcr); | |
1396 | } | |
1397 | ||
1398 | /* Restore capture */ | |
904078f1 GL |
1399 | if (pcdev->active) |
1400 | capsr |= 1; | |
904078f1 GL |
1401 | capture_restore(pcdev, capsr); |
1402 | ||
6a6c8786 GL |
1403 | icd->user_width = out_width; |
1404 | icd->user_height = out_height; | |
1405 | ||
904078f1 GL |
1406 | /* Even if only camera cropping succeeded */ |
1407 | return ret; | |
09e231b3 GL |
1408 | } |
1409 | ||
961801bb | 1410 | /* Similar to set_crop multistage iterative algorithm */ |
d8fac217 | 1411 | static int sh_mobile_ceu_set_fmt(struct soc_camera_device *icd, |
09e231b3 | 1412 | struct v4l2_format *f) |
0d3244d6 | 1413 | { |
9414de39 | 1414 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); |
961801bb | 1415 | struct sh_mobile_ceu_dev *pcdev = ici->priv; |
904078f1 GL |
1416 | struct sh_mobile_ceu_cam *cam = icd->host_priv; |
1417 | struct v4l2_pix_format *pix = &f->fmt.pix; | |
760697be | 1418 | struct v4l2_mbus_framefmt mf; |
c9c1f1c0 | 1419 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
6a6c8786 | 1420 | struct device *dev = icd->dev.parent; |
904078f1 | 1421 | __u32 pixfmt = pix->pixelformat; |
9414de39 | 1422 | const struct soc_camera_format_xlate *xlate; |
6a6c8786 GL |
1423 | struct v4l2_crop cam_crop; |
1424 | struct v4l2_rect *cam_rect = &cam_crop.c, cam_subrect, ceu_rect; | |
1425 | unsigned int scale_cam_h, scale_cam_v; | |
1426 | u16 scale_v, scale_h; | |
1427 | int ret; | |
1428 | bool is_interlaced, image_mode; | |
961801bb GL |
1429 | |
1430 | switch (pix->field) { | |
1431 | case V4L2_FIELD_INTERLACED: | |
6a6c8786 | 1432 | is_interlaced = true; |
961801bb GL |
1433 | break; |
1434 | case V4L2_FIELD_ANY: | |
1435 | default: | |
1436 | pix->field = V4L2_FIELD_NONE; | |
1437 | /* fall-through */ | |
1438 | case V4L2_FIELD_NONE: | |
6a6c8786 | 1439 | is_interlaced = false; |
961801bb GL |
1440 | break; |
1441 | } | |
25c4d74e | 1442 | |
9414de39 MD |
1443 | xlate = soc_camera_xlate_by_fourcc(icd, pixfmt); |
1444 | if (!xlate) { | |
6a6c8786 | 1445 | dev_warn(dev, "Format %x not found\n", pixfmt); |
9414de39 | 1446 | return -EINVAL; |
25c4d74e GL |
1447 | } |
1448 | ||
6a6c8786 GL |
1449 | /* 1. Calculate current camera scales. */ |
1450 | cam_crop.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; | |
1451 | ||
1452 | ret = client_g_rect(sd, cam_rect); | |
1453 | if (ret < 0) | |
1454 | return ret; | |
1455 | ||
1456 | ret = get_camera_scales(sd, cam_rect, &scale_cam_h, &scale_cam_v); | |
1457 | if (ret < 0) | |
1458 | return ret; | |
1459 | ||
1460 | dev_geo(dev, "1: camera scales %u:%u\n", scale_cam_h, scale_cam_v); | |
1461 | ||
1462 | /* | |
1463 | * 2. Calculate "effective" input crop (sensor subwindow) - CEU crop | |
1464 | * scaled back at current camera scales onto input window. | |
1465 | */ | |
1466 | ret = get_camera_subwin(icd, &cam_subrect, scale_cam_h, scale_cam_v); | |
961801bb GL |
1467 | if (ret < 0) |
1468 | return ret; | |
1469 | ||
6a6c8786 GL |
1470 | dev_geo(dev, "2: subwin %ux%u@%u:%u\n", |
1471 | cam_subrect.width, cam_subrect.height, | |
1472 | cam_subrect.left, cam_subrect.top); | |
1473 | ||
1474 | /* | |
1475 | * 3. Calculate new combined scales from "effective" input window to | |
1476 | * requested user window. | |
1477 | */ | |
1478 | scale_h = calc_generic_scale(cam_subrect.width, pix->width); | |
1479 | scale_v = calc_generic_scale(cam_subrect.height, pix->height); | |
1480 | ||
1481 | dev_geo(dev, "3: scales %u:%u\n", scale_h, scale_v); | |
1482 | ||
1483 | /* | |
1484 | * 4. Calculate camera output window by applying combined scales to real | |
1485 | * input window. | |
1486 | */ | |
760697be GL |
1487 | mf.width = scale_down(cam_rect->width, scale_h); |
1488 | mf.height = scale_down(cam_rect->height, scale_v); | |
1489 | mf.field = pix->field; | |
1490 | mf.colorspace = pix->colorspace; | |
1491 | mf.code = xlate->code; | |
6a6c8786 | 1492 | |
961801bb GL |
1493 | switch (pixfmt) { |
1494 | case V4L2_PIX_FMT_NV12: | |
1495 | case V4L2_PIX_FMT_NV21: | |
1496 | case V4L2_PIX_FMT_NV16: | |
1497 | case V4L2_PIX_FMT_NV61: | |
6a6c8786 | 1498 | image_mode = true; |
961801bb GL |
1499 | break; |
1500 | default: | |
6a6c8786 | 1501 | image_mode = false; |
9414de39 | 1502 | } |
25c4d74e | 1503 | |
760697be | 1504 | dev_geo(dev, "4: camera output %ux%u\n", mf.width, mf.height); |
961801bb | 1505 | |
6a6c8786 | 1506 | /* 5. - 9. */ |
760697be | 1507 | ret = client_scale(icd, cam_rect, &cam_subrect, &ceu_rect, &mf, |
6a6c8786 GL |
1508 | image_mode && !is_interlaced); |
1509 | ||
1510 | dev_geo(dev, "5-9: client scale %d\n", ret); | |
1511 | ||
1512 | /* Done with the camera. Now see if we can improve the result */ | |
1513 | ||
1514 | dev_dbg(dev, "Camera %d fmt %ux%u, requested %ux%u\n", | |
760697be | 1515 | ret, mf.width, mf.height, pix->width, pix->height); |
6a6c8786 GL |
1516 | if (ret < 0) |
1517 | return ret; | |
1518 | ||
760697be GL |
1519 | if (mf.code != xlate->code) |
1520 | return -EINVAL; | |
1521 | ||
6a6c8786 | 1522 | /* 10. Use CEU scaling to scale to the requested user window. */ |
961801bb GL |
1523 | |
1524 | /* We cannot scale up */ | |
760697be GL |
1525 | if (pix->width > mf.width) |
1526 | pix->width = mf.width; | |
6a6c8786 GL |
1527 | if (pix->width > ceu_rect.width) |
1528 | pix->width = ceu_rect.width; | |
961801bb | 1529 | |
760697be GL |
1530 | if (pix->height > mf.height) |
1531 | pix->height = mf.height; | |
6a6c8786 GL |
1532 | if (pix->height > ceu_rect.height) |
1533 | pix->height = ceu_rect.height; | |
961801bb | 1534 | |
760697be GL |
1535 | pix->colorspace = mf.colorspace; |
1536 | ||
1537 | if (image_mode) { | |
1538 | /* Scale pix->{width x height} down to width x height */ | |
1539 | scale_h = calc_scale(ceu_rect.width, &pix->width); | |
1540 | scale_v = calc_scale(ceu_rect.height, &pix->height); | |
1541 | ||
1542 | pcdev->cflcr = scale_h | (scale_v << 16); | |
1543 | } else { | |
1544 | pix->width = ceu_rect.width; | |
1545 | pix->height = ceu_rect.height; | |
1546 | scale_h = scale_v = 0; | |
1547 | pcdev->cflcr = 0; | |
1548 | } | |
961801bb | 1549 | |
6a6c8786 GL |
1550 | dev_geo(dev, "10: W: %u : 0x%x = %u, H: %u : 0x%x = %u\n", |
1551 | ceu_rect.width, scale_h, pix->width, | |
1552 | ceu_rect.height, scale_v, pix->height); | |
961801bb | 1553 | |
760697be GL |
1554 | cam->code = xlate->code; |
1555 | cam->ceu_rect = ceu_rect; | |
1556 | icd->current_fmt = xlate; | |
961801bb GL |
1557 | |
1558 | pcdev->is_interlaced = is_interlaced; | |
6a6c8786 | 1559 | pcdev->image_mode = image_mode; |
961801bb GL |
1560 | |
1561 | return 0; | |
0d3244d6 MD |
1562 | } |
1563 | ||
d8fac217 GL |
1564 | static int sh_mobile_ceu_try_fmt(struct soc_camera_device *icd, |
1565 | struct v4l2_format *f) | |
0d3244d6 | 1566 | { |
9414de39 | 1567 | const struct soc_camera_format_xlate *xlate; |
904078f1 | 1568 | struct v4l2_pix_format *pix = &f->fmt.pix; |
c9c1f1c0 | 1569 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
760697be | 1570 | struct v4l2_mbus_framefmt mf; |
904078f1 | 1571 | __u32 pixfmt = pix->pixelformat; |
961801bb | 1572 | int width, height; |
ccab8a29 | 1573 | int ret; |
a2c8c68c | 1574 | |
9414de39 MD |
1575 | xlate = soc_camera_xlate_by_fourcc(icd, pixfmt); |
1576 | if (!xlate) { | |
0166b743 | 1577 | dev_warn(icd->dev.parent, "Format %x not found\n", pixfmt); |
25c4d74e | 1578 | return -EINVAL; |
9414de39 | 1579 | } |
25c4d74e | 1580 | |
0d3244d6 MD |
1581 | /* FIXME: calculate using depth and bus width */ |
1582 | ||
904078f1 GL |
1583 | v4l_bound_align_image(&pix->width, 2, 2560, 1, |
1584 | &pix->height, 4, 1920, 2, 0); | |
0d3244d6 | 1585 | |
961801bb GL |
1586 | width = pix->width; |
1587 | height = pix->height; | |
1588 | ||
760697be GL |
1589 | pix->bytesperline = soc_mbus_bytes_per_line(width, xlate->host_fmt); |
1590 | if (pix->bytesperline < 0) | |
1591 | return pix->bytesperline; | |
1592 | pix->sizeimage = height * pix->bytesperline; | |
979ea1dd | 1593 | |
0d3244d6 | 1594 | /* limit to sensor capabilities */ |
760697be GL |
1595 | mf.width = pix->width; |
1596 | mf.height = pix->height; | |
1597 | mf.field = pix->field; | |
1598 | mf.code = xlate->code; | |
1599 | mf.colorspace = pix->colorspace; | |
1600 | ||
1601 | ret = v4l2_subdev_call(sd, video, try_mbus_fmt, &mf); | |
ccab8a29 KM |
1602 | if (ret < 0) |
1603 | return ret; | |
1604 | ||
760697be GL |
1605 | pix->width = mf.width; |
1606 | pix->height = mf.height; | |
1607 | pix->field = mf.field; | |
1608 | pix->colorspace = mf.colorspace; | |
1609 | ||
961801bb GL |
1610 | switch (pixfmt) { |
1611 | case V4L2_PIX_FMT_NV12: | |
1612 | case V4L2_PIX_FMT_NV21: | |
1613 | case V4L2_PIX_FMT_NV16: | |
1614 | case V4L2_PIX_FMT_NV61: | |
1615 | /* FIXME: check against rect_max after converting soc-camera */ | |
1616 | /* We can scale precisely, need a bigger image from camera */ | |
1617 | if (pix->width < width || pix->height < height) { | |
760697be GL |
1618 | /* |
1619 | * We presume, the sensor behaves sanely, i.e., if | |
1620 | * requested a bigger rectangle, it will not return a | |
1621 | * smaller one. | |
1622 | */ | |
1623 | mf.width = 2560; | |
1624 | mf.height = 1920; | |
1625 | ret = v4l2_subdev_call(sd, video, try_mbus_fmt, &mf); | |
961801bb GL |
1626 | if (ret < 0) { |
1627 | /* Shouldn't actually happen... */ | |
0166b743 | 1628 | dev_err(icd->dev.parent, |
760697be GL |
1629 | "FIXME: client try_fmt() = %d\n", ret); |
1630 | return ret; | |
961801bb GL |
1631 | } |
1632 | } | |
760697be GL |
1633 | /* We will scale exactly */ |
1634 | if (mf.width > width) | |
961801bb | 1635 | pix->width = width; |
760697be | 1636 | if (mf.height > height) |
961801bb | 1637 | pix->height = height; |
ccab8a29 KM |
1638 | } |
1639 | ||
1640 | return ret; | |
0d3244d6 MD |
1641 | } |
1642 | ||
1643 | static int sh_mobile_ceu_reqbufs(struct soc_camera_file *icf, | |
1644 | struct v4l2_requestbuffers *p) | |
1645 | { | |
1646 | int i; | |
1647 | ||
5d28d525 GL |
1648 | /* |
1649 | * This is for locking debugging only. I removed spinlocks and now I | |
0d3244d6 MD |
1650 | * check whether .prepare is ever called on a linked buffer, or whether |
1651 | * a dma IRQ can occur for an in-work or unlinked buffer. Until now | |
5d28d525 GL |
1652 | * it hadn't triggered |
1653 | */ | |
0d3244d6 MD |
1654 | for (i = 0; i < p->count; i++) { |
1655 | struct sh_mobile_ceu_buffer *buf; | |
1656 | ||
1657 | buf = container_of(icf->vb_vidq.bufs[i], | |
1658 | struct sh_mobile_ceu_buffer, vb); | |
1659 | INIT_LIST_HEAD(&buf->vb.queue); | |
1660 | } | |
1661 | ||
1662 | return 0; | |
1663 | } | |
1664 | ||
1665 | static unsigned int sh_mobile_ceu_poll(struct file *file, poll_table *pt) | |
1666 | { | |
1667 | struct soc_camera_file *icf = file->private_data; | |
1668 | struct sh_mobile_ceu_buffer *buf; | |
1669 | ||
1670 | buf = list_entry(icf->vb_vidq.stream.next, | |
1671 | struct sh_mobile_ceu_buffer, vb.stream); | |
1672 | ||
1673 | poll_wait(file, &buf->vb.done, pt); | |
1674 | ||
1675 | if (buf->vb.state == VIDEOBUF_DONE || | |
1676 | buf->vb.state == VIDEOBUF_ERROR) | |
1677 | return POLLIN|POLLRDNORM; | |
1678 | ||
1679 | return 0; | |
1680 | } | |
1681 | ||
1682 | static int sh_mobile_ceu_querycap(struct soc_camera_host *ici, | |
1683 | struct v4l2_capability *cap) | |
1684 | { | |
1685 | strlcpy(cap->card, "SuperH_Mobile_CEU", sizeof(cap->card)); | |
1686 | cap->version = KERNEL_VERSION(0, 0, 5); | |
1687 | cap->capabilities = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING; | |
1688 | return 0; | |
1689 | } | |
1690 | ||
1691 | static void sh_mobile_ceu_init_videobuf(struct videobuf_queue *q, | |
1692 | struct soc_camera_device *icd) | |
1693 | { | |
1694 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); | |
1695 | struct sh_mobile_ceu_dev *pcdev = ici->priv; | |
1696 | ||
1697 | videobuf_queue_dma_contig_init(q, | |
1698 | &sh_mobile_ceu_videobuf_ops, | |
0166b743 | 1699 | icd->dev.parent, &pcdev->lock, |
0d3244d6 | 1700 | V4L2_BUF_TYPE_VIDEO_CAPTURE, |
e802967c GL |
1701 | pcdev->is_interlaced ? |
1702 | V4L2_FIELD_INTERLACED : V4L2_FIELD_NONE, | |
0d3244d6 MD |
1703 | sizeof(struct sh_mobile_ceu_buffer), |
1704 | icd); | |
1705 | } | |
1706 | ||
4a6110bc GL |
1707 | static int sh_mobile_ceu_get_ctrl(struct soc_camera_device *icd, |
1708 | struct v4l2_control *ctrl) | |
1709 | { | |
1710 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); | |
1711 | struct sh_mobile_ceu_dev *pcdev = ici->priv; | |
1712 | u32 val; | |
1713 | ||
1714 | switch (ctrl->id) { | |
1715 | case V4L2_CID_SHARPNESS: | |
1716 | val = ceu_read(pcdev, CLFCR); | |
1717 | ctrl->value = val ^ 1; | |
1718 | return 0; | |
1719 | } | |
1720 | return -ENOIOCTLCMD; | |
1721 | } | |
1722 | ||
1723 | static int sh_mobile_ceu_set_ctrl(struct soc_camera_device *icd, | |
1724 | struct v4l2_control *ctrl) | |
1725 | { | |
1726 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); | |
1727 | struct sh_mobile_ceu_dev *pcdev = ici->priv; | |
1728 | ||
1729 | switch (ctrl->id) { | |
1730 | case V4L2_CID_SHARPNESS: | |
760697be | 1731 | switch (icd->current_fmt->host_fmt->fourcc) { |
4a6110bc GL |
1732 | case V4L2_PIX_FMT_NV12: |
1733 | case V4L2_PIX_FMT_NV21: | |
1734 | case V4L2_PIX_FMT_NV16: | |
1735 | case V4L2_PIX_FMT_NV61: | |
1736 | ceu_write(pcdev, CLFCR, !ctrl->value); | |
1737 | return 0; | |
1738 | } | |
1739 | return -EINVAL; | |
1740 | } | |
1741 | return -ENOIOCTLCMD; | |
1742 | } | |
1743 | ||
1744 | static const struct v4l2_queryctrl sh_mobile_ceu_controls[] = { | |
1745 | { | |
1746 | .id = V4L2_CID_SHARPNESS, | |
1747 | .type = V4L2_CTRL_TYPE_BOOLEAN, | |
1748 | .name = "Low-pass filter", | |
1749 | .minimum = 0, | |
1750 | .maximum = 1, | |
1751 | .step = 1, | |
1752 | .default_value = 0, | |
1753 | }, | |
1754 | }; | |
1755 | ||
0d3244d6 MD |
1756 | static struct soc_camera_host_ops sh_mobile_ceu_host_ops = { |
1757 | .owner = THIS_MODULE, | |
1758 | .add = sh_mobile_ceu_add_device, | |
1759 | .remove = sh_mobile_ceu_remove_device, | |
9414de39 | 1760 | .get_formats = sh_mobile_ceu_get_formats, |
904078f1 | 1761 | .put_formats = sh_mobile_ceu_put_formats, |
09e231b3 | 1762 | .set_crop = sh_mobile_ceu_set_crop, |
d8fac217 GL |
1763 | .set_fmt = sh_mobile_ceu_set_fmt, |
1764 | .try_fmt = sh_mobile_ceu_try_fmt, | |
4a6110bc GL |
1765 | .set_ctrl = sh_mobile_ceu_set_ctrl, |
1766 | .get_ctrl = sh_mobile_ceu_get_ctrl, | |
0d3244d6 MD |
1767 | .reqbufs = sh_mobile_ceu_reqbufs, |
1768 | .poll = sh_mobile_ceu_poll, | |
1769 | .querycap = sh_mobile_ceu_querycap, | |
0d3244d6 MD |
1770 | .set_bus_param = sh_mobile_ceu_set_bus_param, |
1771 | .init_videobuf = sh_mobile_ceu_init_videobuf, | |
4a6110bc GL |
1772 | .controls = sh_mobile_ceu_controls, |
1773 | .num_controls = ARRAY_SIZE(sh_mobile_ceu_controls), | |
0d3244d6 MD |
1774 | }; |
1775 | ||
979ea1dd | 1776 | static int __devinit sh_mobile_ceu_probe(struct platform_device *pdev) |
0d3244d6 MD |
1777 | { |
1778 | struct sh_mobile_ceu_dev *pcdev; | |
1779 | struct resource *res; | |
1780 | void __iomem *base; | |
1781 | unsigned int irq; | |
1782 | int err = 0; | |
1783 | ||
1784 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); | |
1785 | irq = platform_get_irq(pdev, 0); | |
1786 | if (!res || !irq) { | |
1787 | dev_err(&pdev->dev, "Not enough CEU platform resources.\n"); | |
1788 | err = -ENODEV; | |
1789 | goto exit; | |
1790 | } | |
1791 | ||
1792 | pcdev = kzalloc(sizeof(*pcdev), GFP_KERNEL); | |
1793 | if (!pcdev) { | |
1794 | dev_err(&pdev->dev, "Could not allocate pcdev\n"); | |
1795 | err = -ENOMEM; | |
1796 | goto exit; | |
1797 | } | |
1798 | ||
0d3244d6 MD |
1799 | INIT_LIST_HEAD(&pcdev->capture); |
1800 | spin_lock_init(&pcdev->lock); | |
1801 | ||
1802 | pcdev->pdata = pdev->dev.platform_data; | |
1803 | if (!pcdev->pdata) { | |
1804 | err = -EINVAL; | |
1805 | dev_err(&pdev->dev, "CEU platform data not set.\n"); | |
1806 | goto exit_kfree; | |
1807 | } | |
1808 | ||
eb6c8558 | 1809 | base = ioremap_nocache(res->start, resource_size(res)); |
0d3244d6 MD |
1810 | if (!base) { |
1811 | err = -ENXIO; | |
1812 | dev_err(&pdev->dev, "Unable to ioremap CEU registers.\n"); | |
1813 | goto exit_kfree; | |
1814 | } | |
1815 | ||
1816 | pcdev->irq = irq; | |
1817 | pcdev->base = base; | |
1818 | pcdev->video_limit = 0; /* only enabled if second resource exists */ | |
0d3244d6 MD |
1819 | |
1820 | res = platform_get_resource(pdev, IORESOURCE_MEM, 1); | |
1821 | if (res) { | |
1822 | err = dma_declare_coherent_memory(&pdev->dev, res->start, | |
1823 | res->start, | |
eb6c8558 | 1824 | resource_size(res), |
0d3244d6 MD |
1825 | DMA_MEMORY_MAP | |
1826 | DMA_MEMORY_EXCLUSIVE); | |
1827 | if (!err) { | |
1828 | dev_err(&pdev->dev, "Unable to declare CEU memory.\n"); | |
1829 | err = -ENXIO; | |
1830 | goto exit_iounmap; | |
1831 | } | |
1832 | ||
eb6c8558 | 1833 | pcdev->video_limit = resource_size(res); |
0d3244d6 MD |
1834 | } |
1835 | ||
1836 | /* request irq */ | |
1837 | err = request_irq(pcdev->irq, sh_mobile_ceu_irq, IRQF_DISABLED, | |
af128a10 | 1838 | dev_name(&pdev->dev), pcdev); |
0d3244d6 MD |
1839 | if (err) { |
1840 | dev_err(&pdev->dev, "Unable to register CEU interrupt.\n"); | |
1841 | goto exit_release_mem; | |
1842 | } | |
1843 | ||
6d1386c6 MD |
1844 | pm_suspend_ignore_children(&pdev->dev, true); |
1845 | pm_runtime_enable(&pdev->dev); | |
1846 | pm_runtime_resume(&pdev->dev); | |
a42b6dd6 | 1847 | |
0d3244d6 | 1848 | pcdev->ici.priv = pcdev; |
979ea1dd | 1849 | pcdev->ici.v4l2_dev.dev = &pdev->dev; |
0d3244d6 | 1850 | pcdev->ici.nr = pdev->id; |
af128a10 KS |
1851 | pcdev->ici.drv_name = dev_name(&pdev->dev); |
1852 | pcdev->ici.ops = &sh_mobile_ceu_host_ops; | |
0d3244d6 MD |
1853 | |
1854 | err = soc_camera_host_register(&pcdev->ici); | |
1855 | if (err) | |
055e05a0 | 1856 | goto exit_free_clk; |
0d3244d6 MD |
1857 | |
1858 | return 0; | |
1859 | ||
055e05a0 KM |
1860 | exit_free_clk: |
1861 | pm_runtime_disable(&pdev->dev); | |
0d3244d6 MD |
1862 | free_irq(pcdev->irq, pcdev); |
1863 | exit_release_mem: | |
1864 | if (platform_get_resource(pdev, IORESOURCE_MEM, 1)) | |
1865 | dma_release_declared_memory(&pdev->dev); | |
1866 | exit_iounmap: | |
1867 | iounmap(base); | |
1868 | exit_kfree: | |
1869 | kfree(pcdev); | |
1870 | exit: | |
1871 | return err; | |
1872 | } | |
1873 | ||
979ea1dd | 1874 | static int __devexit sh_mobile_ceu_remove(struct platform_device *pdev) |
0d3244d6 | 1875 | { |
eff505fa GL |
1876 | struct soc_camera_host *soc_host = to_soc_camera_host(&pdev->dev); |
1877 | struct sh_mobile_ceu_dev *pcdev = container_of(soc_host, | |
1878 | struct sh_mobile_ceu_dev, ici); | |
0d3244d6 | 1879 | |
eff505fa | 1880 | soc_camera_host_unregister(soc_host); |
055e05a0 | 1881 | pm_runtime_disable(&pdev->dev); |
0d3244d6 MD |
1882 | free_irq(pcdev->irq, pcdev); |
1883 | if (platform_get_resource(pdev, IORESOURCE_MEM, 1)) | |
1884 | dma_release_declared_memory(&pdev->dev); | |
1885 | iounmap(pcdev->base); | |
1886 | kfree(pcdev); | |
1887 | return 0; | |
1888 | } | |
1889 | ||
6d1386c6 MD |
1890 | static int sh_mobile_ceu_runtime_nop(struct device *dev) |
1891 | { | |
1892 | /* Runtime PM callback shared between ->runtime_suspend() | |
1893 | * and ->runtime_resume(). Simply returns success. | |
1894 | * | |
1895 | * This driver re-initializes all registers after | |
1896 | * pm_runtime_get_sync() anyway so there is no need | |
1897 | * to save and restore registers here. | |
1898 | */ | |
1899 | return 0; | |
1900 | } | |
1901 | ||
47145210 | 1902 | static const struct dev_pm_ops sh_mobile_ceu_dev_pm_ops = { |
6d1386c6 MD |
1903 | .runtime_suspend = sh_mobile_ceu_runtime_nop, |
1904 | .runtime_resume = sh_mobile_ceu_runtime_nop, | |
1905 | }; | |
1906 | ||
0d3244d6 MD |
1907 | static struct platform_driver sh_mobile_ceu_driver = { |
1908 | .driver = { | |
1909 | .name = "sh_mobile_ceu", | |
6d1386c6 | 1910 | .pm = &sh_mobile_ceu_dev_pm_ops, |
0d3244d6 MD |
1911 | }, |
1912 | .probe = sh_mobile_ceu_probe, | |
50e55fd1 | 1913 | .remove = __devexit_p(sh_mobile_ceu_remove), |
0d3244d6 MD |
1914 | }; |
1915 | ||
1916 | static int __init sh_mobile_ceu_init(void) | |
1917 | { | |
1918 | return platform_driver_register(&sh_mobile_ceu_driver); | |
1919 | } | |
1920 | ||
1921 | static void __exit sh_mobile_ceu_exit(void) | |
1922 | { | |
01c1e4ca | 1923 | platform_driver_unregister(&sh_mobile_ceu_driver); |
0d3244d6 MD |
1924 | } |
1925 | ||
1926 | module_init(sh_mobile_ceu_init); | |
1927 | module_exit(sh_mobile_ceu_exit); | |
1928 | ||
1929 | MODULE_DESCRIPTION("SuperH Mobile CEU driver"); | |
1930 | MODULE_AUTHOR("Magnus Damm"); | |
1931 | MODULE_LICENSE("GPL"); | |
40e2e092 | 1932 | MODULE_ALIAS("platform:sh_mobile_ceu"); |