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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 | ||
1edcc10d KM |
110 | enum v4l2_field field; |
111 | ||
904078f1 GL |
112 | unsigned int image_mode:1; |
113 | unsigned int is_16bit:1; | |
114 | }; | |
115 | ||
116 | struct sh_mobile_ceu_cam { | |
6a6c8786 GL |
117 | struct v4l2_rect ceu_rect; |
118 | unsigned int cam_width; | |
119 | unsigned int cam_height; | |
760697be GL |
120 | const struct soc_mbus_pixelfmt *extra_fmt; |
121 | enum v4l2_mbus_pixelcode code; | |
0d3244d6 MD |
122 | }; |
123 | ||
c354b400 KM |
124 | static unsigned long make_bus_param(struct sh_mobile_ceu_dev *pcdev) |
125 | { | |
126 | unsigned long flags; | |
127 | ||
128 | flags = SOCAM_MASTER | | |
129 | SOCAM_PCLK_SAMPLE_RISING | | |
130 | SOCAM_HSYNC_ACTIVE_HIGH | | |
131 | SOCAM_HSYNC_ACTIVE_LOW | | |
132 | SOCAM_VSYNC_ACTIVE_HIGH | | |
133 | SOCAM_VSYNC_ACTIVE_LOW | | |
134 | SOCAM_DATA_ACTIVE_HIGH; | |
135 | ||
136 | if (pcdev->pdata->flags & SH_CEU_FLAG_USE_8BIT_BUS) | |
137 | flags |= SOCAM_DATAWIDTH_8; | |
138 | ||
139 | if (pcdev->pdata->flags & SH_CEU_FLAG_USE_16BIT_BUS) | |
140 | flags |= SOCAM_DATAWIDTH_16; | |
141 | ||
142 | if (flags & SOCAM_DATAWIDTH_MASK) | |
143 | return flags; | |
144 | ||
145 | return 0; | |
146 | } | |
147 | ||
0d3244d6 | 148 | static void ceu_write(struct sh_mobile_ceu_dev *priv, |
7a1a8164 | 149 | unsigned long reg_offs, u32 data) |
0d3244d6 MD |
150 | { |
151 | iowrite32(data, priv->base + reg_offs); | |
152 | } | |
153 | ||
7a1a8164 | 154 | static u32 ceu_read(struct sh_mobile_ceu_dev *priv, unsigned long reg_offs) |
0d3244d6 MD |
155 | { |
156 | return ioread32(priv->base + reg_offs); | |
157 | } | |
158 | ||
b1de7aeb KM |
159 | static int sh_mobile_ceu_soft_reset(struct sh_mobile_ceu_dev *pcdev) |
160 | { | |
161 | int i, success = 0; | |
162 | struct soc_camera_device *icd = pcdev->icd; | |
163 | ||
164 | ceu_write(pcdev, CAPSR, 1 << 16); /* reset */ | |
165 | ||
166 | /* wait CSTSR.CPTON bit */ | |
167 | for (i = 0; i < 1000; i++) { | |
168 | if (!(ceu_read(pcdev, CSTSR) & 1)) { | |
169 | success++; | |
170 | break; | |
171 | } | |
172 | udelay(1); | |
173 | } | |
174 | ||
175 | /* wait CAPSR.CPKIL bit */ | |
176 | for (i = 0; i < 1000; i++) { | |
177 | if (!(ceu_read(pcdev, CAPSR) & (1 << 16))) { | |
178 | success++; | |
179 | break; | |
180 | } | |
181 | udelay(1); | |
182 | } | |
183 | ||
184 | ||
185 | if (2 != success) { | |
186 | dev_warn(&icd->dev, "soft reset time out\n"); | |
187 | return -EIO; | |
188 | } | |
189 | ||
190 | return 0; | |
191 | } | |
192 | ||
0d3244d6 MD |
193 | /* |
194 | * Videobuf operations | |
195 | */ | |
196 | static int sh_mobile_ceu_videobuf_setup(struct videobuf_queue *vq, | |
197 | unsigned int *count, | |
198 | unsigned int *size) | |
199 | { | |
200 | struct soc_camera_device *icd = vq->priv_data; | |
201 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); | |
202 | struct sh_mobile_ceu_dev *pcdev = ici->priv; | |
760697be GL |
203 | int bytes_per_line = soc_mbus_bytes_per_line(icd->user_width, |
204 | icd->current_fmt->host_fmt); | |
0d3244d6 | 205 | |
760697be GL |
206 | if (bytes_per_line < 0) |
207 | return bytes_per_line; | |
208 | ||
e6641c80 | 209 | *size = bytes_per_line * icd->user_height; |
0d3244d6 MD |
210 | |
211 | if (0 == *count) | |
212 | *count = 2; | |
213 | ||
214 | if (pcdev->video_limit) { | |
e6641c80 | 215 | while (PAGE_ALIGN(*size) * *count > pcdev->video_limit) |
0d3244d6 MD |
216 | (*count)--; |
217 | } | |
218 | ||
0166b743 | 219 | dev_dbg(icd->dev.parent, "count=%d, size=%d\n", *count, *size); |
0d3244d6 MD |
220 | |
221 | return 0; | |
222 | } | |
223 | ||
224 | static void free_buffer(struct videobuf_queue *vq, | |
225 | struct sh_mobile_ceu_buffer *buf) | |
226 | { | |
227 | struct soc_camera_device *icd = vq->priv_data; | |
6a6c8786 | 228 | struct device *dev = icd->dev.parent; |
0d3244d6 | 229 | |
6a6c8786 | 230 | dev_dbg(dev, "%s (vb=0x%p) 0x%08lx %zd\n", __func__, |
0d3244d6 MD |
231 | &buf->vb, buf->vb.baddr, buf->vb.bsize); |
232 | ||
233 | if (in_interrupt()) | |
234 | BUG(); | |
235 | ||
97215cbd | 236 | videobuf_waiton(&buf->vb, 0, 0); |
0d3244d6 | 237 | videobuf_dma_contig_free(vq, &buf->vb); |
6a6c8786 | 238 | dev_dbg(dev, "%s freed\n", __func__); |
0d3244d6 MD |
239 | buf->vb.state = VIDEOBUF_NEEDS_INIT; |
240 | } | |
241 | ||
7a1a8164 MD |
242 | #define CEU_CETCR_MAGIC 0x0317f313 /* acknowledge magical interrupt sources */ |
243 | #define CEU_CETCR_IGRW (1 << 4) /* prohibited register access interrupt bit */ | |
244 | #define CEU_CEIER_CPEIE (1 << 0) /* one-frame capture end interrupt */ | |
5cf93f1d | 245 | #define CEU_CEIER_VBP (1 << 20) /* vbp error */ |
7a1a8164 | 246 | #define CEU_CAPCR_CTNCP (1 << 16) /* continuous capture mode (if set) */ |
5cf93f1d | 247 | #define CEU_CEIER_MASK (CEU_CEIER_CPEIE | CEU_CEIER_VBP) |
7a1a8164 MD |
248 | |
249 | ||
5cf93f1d KM |
250 | /* |
251 | * return value doesn't reflex the success/failure to queue the new buffer, | |
252 | * but rather the status of the previous buffer. | |
253 | */ | |
254 | static int sh_mobile_ceu_capture(struct sh_mobile_ceu_dev *pcdev) | |
0d3244d6 | 255 | { |
8be65dc5 | 256 | struct soc_camera_device *icd = pcdev->icd; |
ccab8a29 | 257 | dma_addr_t phys_addr_top, phys_addr_bottom; |
1edcc10d KM |
258 | unsigned long top1, top2; |
259 | unsigned long bottom1, bottom2; | |
5cf93f1d KM |
260 | u32 status; |
261 | int ret = 0; | |
7a1a8164 | 262 | |
5d28d525 GL |
263 | /* |
264 | * The hardware is _very_ picky about this sequence. Especially | |
7a1a8164 MD |
265 | * the CEU_CETCR_MAGIC value. It seems like we need to acknowledge |
266 | * several not-so-well documented interrupt sources in CETCR. | |
267 | */ | |
5cf93f1d KM |
268 | ceu_write(pcdev, CEIER, ceu_read(pcdev, CEIER) & ~CEU_CEIER_MASK); |
269 | status = ceu_read(pcdev, CETCR); | |
270 | ceu_write(pcdev, CETCR, ~status & CEU_CETCR_MAGIC); | |
271 | ceu_write(pcdev, CEIER, ceu_read(pcdev, CEIER) | CEU_CEIER_MASK); | |
7a1a8164 MD |
272 | ceu_write(pcdev, CAPCR, ceu_read(pcdev, CAPCR) & ~CEU_CAPCR_CTNCP); |
273 | ceu_write(pcdev, CETCR, CEU_CETCR_MAGIC ^ CEU_CETCR_IGRW); | |
0d3244d6 | 274 | |
5cf93f1d KM |
275 | /* |
276 | * When a VBP interrupt occurs, a capture end interrupt does not occur | |
277 | * and the image of that frame is not captured correctly. So, soft reset | |
278 | * is needed here. | |
279 | */ | |
280 | if (status & CEU_CEIER_VBP) { | |
281 | sh_mobile_ceu_soft_reset(pcdev); | |
282 | ret = -EIO; | |
283 | } | |
284 | ||
8be65dc5 | 285 | if (!pcdev->active) |
5cf93f1d | 286 | return ret; |
8be65dc5 | 287 | |
1edcc10d KM |
288 | if (V4L2_FIELD_INTERLACED_BT == pcdev->field) { |
289 | top1 = CDBYR; | |
290 | top2 = CDBCR; | |
291 | bottom1 = CDAYR; | |
292 | bottom2 = CDACR; | |
293 | } else { | |
294 | top1 = CDAYR; | |
295 | top2 = CDACR; | |
296 | bottom1 = CDBYR; | |
297 | bottom2 = CDBCR; | |
298 | } | |
299 | ||
ccab8a29 | 300 | phys_addr_top = videobuf_to_dma_contig(pcdev->active); |
1edcc10d KM |
301 | ceu_write(pcdev, top1, phys_addr_top); |
302 | if (V4L2_FIELD_NONE != pcdev->field) { | |
6a6c8786 | 303 | phys_addr_bottom = phys_addr_top + icd->user_width; |
1edcc10d | 304 | ceu_write(pcdev, bottom1, phys_addr_bottom); |
ccab8a29 | 305 | } |
8be65dc5 | 306 | |
760697be | 307 | switch (icd->current_fmt->host_fmt->fourcc) { |
8be65dc5 MD |
308 | case V4L2_PIX_FMT_NV12: |
309 | case V4L2_PIX_FMT_NV21: | |
9e4a56d2 MD |
310 | case V4L2_PIX_FMT_NV16: |
311 | case V4L2_PIX_FMT_NV61: | |
6a6c8786 GL |
312 | phys_addr_top += icd->user_width * |
313 | icd->user_height; | |
1edcc10d KM |
314 | ceu_write(pcdev, top2, phys_addr_top); |
315 | if (V4L2_FIELD_NONE != pcdev->field) { | |
316 | phys_addr_bottom = phys_addr_top + icd->user_width; | |
317 | ceu_write(pcdev, bottom2, phys_addr_bottom); | |
ccab8a29 | 318 | } |
0d3244d6 | 319 | } |
8be65dc5 MD |
320 | |
321 | pcdev->active->state = VIDEOBUF_ACTIVE; | |
322 | ceu_write(pcdev, CAPSR, 0x1); /* start capture */ | |
5cf93f1d KM |
323 | |
324 | return ret; | |
0d3244d6 MD |
325 | } |
326 | ||
327 | static int sh_mobile_ceu_videobuf_prepare(struct videobuf_queue *vq, | |
328 | struct videobuf_buffer *vb, | |
329 | enum v4l2_field field) | |
330 | { | |
331 | struct soc_camera_device *icd = vq->priv_data; | |
332 | struct sh_mobile_ceu_buffer *buf; | |
760697be GL |
333 | int bytes_per_line = soc_mbus_bytes_per_line(icd->user_width, |
334 | icd->current_fmt->host_fmt); | |
0d3244d6 MD |
335 | int ret; |
336 | ||
760697be GL |
337 | if (bytes_per_line < 0) |
338 | return bytes_per_line; | |
339 | ||
0d3244d6 MD |
340 | buf = container_of(vb, struct sh_mobile_ceu_buffer, vb); |
341 | ||
0166b743 | 342 | dev_dbg(icd->dev.parent, "%s (vb=0x%p) 0x%08lx %zd\n", __func__, |
0d3244d6 MD |
343 | vb, vb->baddr, vb->bsize); |
344 | ||
345 | /* Added list head initialization on alloc */ | |
346 | WARN_ON(!list_empty(&vb->queue)); | |
347 | ||
348 | #ifdef DEBUG | |
5d28d525 GL |
349 | /* |
350 | * This can be useful if you want to see if we actually fill | |
351 | * the buffer with something | |
352 | */ | |
0d3244d6 MD |
353 | memset((void *)vb->baddr, 0xaa, vb->bsize); |
354 | #endif | |
355 | ||
356 | BUG_ON(NULL == icd->current_fmt); | |
357 | ||
760697be | 358 | if (buf->code != icd->current_fmt->code || |
6a6c8786 GL |
359 | vb->width != icd->user_width || |
360 | vb->height != icd->user_height || | |
0d3244d6 | 361 | vb->field != field) { |
760697be | 362 | buf->code = icd->current_fmt->code; |
6a6c8786 GL |
363 | vb->width = icd->user_width; |
364 | vb->height = icd->user_height; | |
0d3244d6 MD |
365 | vb->field = field; |
366 | vb->state = VIDEOBUF_NEEDS_INIT; | |
367 | } | |
368 | ||
760697be | 369 | vb->size = vb->height * bytes_per_line; |
0d3244d6 MD |
370 | if (0 != vb->baddr && vb->bsize < vb->size) { |
371 | ret = -EINVAL; | |
372 | goto out; | |
373 | } | |
374 | ||
375 | if (vb->state == VIDEOBUF_NEEDS_INIT) { | |
376 | ret = videobuf_iolock(vq, vb, NULL); | |
377 | if (ret) | |
378 | goto fail; | |
379 | vb->state = VIDEOBUF_PREPARED; | |
380 | } | |
381 | ||
382 | return 0; | |
383 | fail: | |
384 | free_buffer(vq, buf); | |
385 | out: | |
386 | return ret; | |
387 | } | |
388 | ||
2dd54a54 | 389 | /* Called under spinlock_irqsave(&pcdev->lock, ...) */ |
0d3244d6 MD |
390 | static void sh_mobile_ceu_videobuf_queue(struct videobuf_queue *vq, |
391 | struct videobuf_buffer *vb) | |
392 | { | |
393 | struct soc_camera_device *icd = vq->priv_data; | |
394 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); | |
395 | struct sh_mobile_ceu_dev *pcdev = ici->priv; | |
0d3244d6 | 396 | |
0166b743 | 397 | dev_dbg(icd->dev.parent, "%s (vb=0x%p) 0x%08lx %zd\n", __func__, |
0d3244d6 MD |
398 | vb, vb->baddr, vb->bsize); |
399 | ||
51354cc3 | 400 | vb->state = VIDEOBUF_QUEUED; |
0d3244d6 MD |
401 | list_add_tail(&vb->queue, &pcdev->capture); |
402 | ||
403 | if (!pcdev->active) { | |
5cf93f1d KM |
404 | /* |
405 | * Because there were no active buffer at this moment, | |
406 | * we are not interested in the return value of | |
407 | * sh_mobile_ceu_capture here. | |
408 | */ | |
0d3244d6 MD |
409 | pcdev->active = vb; |
410 | sh_mobile_ceu_capture(pcdev); | |
411 | } | |
0d3244d6 MD |
412 | } |
413 | ||
414 | static void sh_mobile_ceu_videobuf_release(struct videobuf_queue *vq, | |
415 | struct videobuf_buffer *vb) | |
416 | { | |
cca0e549 GL |
417 | struct soc_camera_device *icd = vq->priv_data; |
418 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); | |
419 | struct sh_mobile_ceu_dev *pcdev = ici->priv; | |
420 | unsigned long flags; | |
421 | ||
422 | spin_lock_irqsave(&pcdev->lock, flags); | |
423 | ||
424 | if (pcdev->active == vb) { | |
425 | /* disable capture (release DMA buffer), reset */ | |
426 | ceu_write(pcdev, CAPSR, 1 << 16); | |
427 | pcdev->active = NULL; | |
428 | } | |
429 | ||
430 | if ((vb->state == VIDEOBUF_ACTIVE || vb->state == VIDEOBUF_QUEUED) && | |
431 | !list_empty(&vb->queue)) { | |
432 | vb->state = VIDEOBUF_ERROR; | |
433 | list_del_init(&vb->queue); | |
434 | } | |
435 | ||
436 | spin_unlock_irqrestore(&pcdev->lock, flags); | |
437 | ||
0d3244d6 MD |
438 | free_buffer(vq, container_of(vb, struct sh_mobile_ceu_buffer, vb)); |
439 | } | |
440 | ||
441 | static struct videobuf_queue_ops sh_mobile_ceu_videobuf_ops = { | |
442 | .buf_setup = sh_mobile_ceu_videobuf_setup, | |
443 | .buf_prepare = sh_mobile_ceu_videobuf_prepare, | |
444 | .buf_queue = sh_mobile_ceu_videobuf_queue, | |
445 | .buf_release = sh_mobile_ceu_videobuf_release, | |
446 | }; | |
447 | ||
448 | static irqreturn_t sh_mobile_ceu_irq(int irq, void *data) | |
449 | { | |
450 | struct sh_mobile_ceu_dev *pcdev = data; | |
451 | struct videobuf_buffer *vb; | |
452 | unsigned long flags; | |
453 | ||
454 | spin_lock_irqsave(&pcdev->lock, flags); | |
455 | ||
456 | vb = pcdev->active; | |
cca0e549 GL |
457 | if (!vb) |
458 | /* Stale interrupt from a released buffer */ | |
459 | goto out; | |
460 | ||
0d3244d6 MD |
461 | list_del_init(&vb->queue); |
462 | ||
463 | if (!list_empty(&pcdev->capture)) | |
464 | pcdev->active = list_entry(pcdev->capture.next, | |
465 | struct videobuf_buffer, queue); | |
466 | else | |
467 | pcdev->active = NULL; | |
468 | ||
5cf93f1d KM |
469 | vb->state = (sh_mobile_ceu_capture(pcdev) < 0) ? |
470 | VIDEOBUF_ERROR : VIDEOBUF_DONE; | |
0d3244d6 MD |
471 | do_gettimeofday(&vb->ts); |
472 | vb->field_count++; | |
473 | wake_up(&vb->done); | |
cca0e549 GL |
474 | |
475 | out: | |
0d3244d6 MD |
476 | spin_unlock_irqrestore(&pcdev->lock, flags); |
477 | ||
478 | return IRQ_HANDLED; | |
479 | } | |
480 | ||
1c3bb743 | 481 | /* Called with .video_lock held */ |
0d3244d6 MD |
482 | static int sh_mobile_ceu_add_device(struct soc_camera_device *icd) |
483 | { | |
484 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); | |
485 | struct sh_mobile_ceu_dev *pcdev = ici->priv; | |
6ed7c038 | 486 | int ret; |
0d3244d6 | 487 | |
0d3244d6 | 488 | if (pcdev->icd) |
979ea1dd | 489 | return -EBUSY; |
0d3244d6 | 490 | |
0166b743 | 491 | dev_info(icd->dev.parent, |
0d3244d6 MD |
492 | "SuperH Mobile CEU driver attached to camera %d\n", |
493 | icd->devnum); | |
494 | ||
a79aebfc | 495 | pm_runtime_get_sync(ici->v4l2_dev.dev); |
40e2e092 | 496 | |
6ed7c038 GL |
497 | ret = sh_mobile_ceu_soft_reset(pcdev); |
498 | if (!ret) | |
499 | pcdev->icd = icd; | |
979ea1dd | 500 | |
6ed7c038 | 501 | return ret; |
0d3244d6 MD |
502 | } |
503 | ||
1c3bb743 | 504 | /* Called with .video_lock held */ |
0d3244d6 MD |
505 | static void sh_mobile_ceu_remove_device(struct soc_camera_device *icd) |
506 | { | |
507 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); | |
508 | struct sh_mobile_ceu_dev *pcdev = ici->priv; | |
51354cc3 | 509 | unsigned long flags; |
0d3244d6 MD |
510 | |
511 | BUG_ON(icd != pcdev->icd); | |
512 | ||
513 | /* disable capture, disable interrupts */ | |
514 | ceu_write(pcdev, CEIER, 0); | |
b1de7aeb | 515 | sh_mobile_ceu_soft_reset(pcdev); |
51354cc3 MD |
516 | |
517 | /* make sure active buffer is canceled */ | |
518 | spin_lock_irqsave(&pcdev->lock, flags); | |
519 | if (pcdev->active) { | |
520 | list_del(&pcdev->active->queue); | |
521 | pcdev->active->state = VIDEOBUF_ERROR; | |
522 | wake_up_all(&pcdev->active->done); | |
523 | pcdev->active = NULL; | |
524 | } | |
525 | spin_unlock_irqrestore(&pcdev->lock, flags); | |
526 | ||
a79aebfc | 527 | pm_runtime_put_sync(ici->v4l2_dev.dev); |
40e2e092 | 528 | |
0166b743 | 529 | dev_info(icd->dev.parent, |
0d3244d6 MD |
530 | "SuperH Mobile CEU driver detached from camera %d\n", |
531 | icd->devnum); | |
532 | ||
533 | pcdev->icd = NULL; | |
534 | } | |
535 | ||
961801bb GL |
536 | /* |
537 | * See chapter 29.4.12 "Capture Filter Control Register (CFLCR)" | |
538 | * in SH7722 Hardware Manual | |
539 | */ | |
540 | static unsigned int size_dst(unsigned int src, unsigned int scale) | |
541 | { | |
542 | unsigned int mant_pre = scale >> 12; | |
543 | if (!src || !scale) | |
544 | return src; | |
545 | return ((mant_pre + 2 * (src - 1)) / (2 * mant_pre) - 1) * | |
546 | mant_pre * 4096 / scale + 1; | |
547 | } | |
548 | ||
961801bb GL |
549 | static u16 calc_scale(unsigned int src, unsigned int *dst) |
550 | { | |
551 | u16 scale; | |
552 | ||
553 | if (src == *dst) | |
554 | return 0; | |
555 | ||
556 | scale = (src * 4096 / *dst) & ~7; | |
557 | ||
558 | while (scale > 4096 && size_dst(src, scale) < *dst) | |
559 | scale -= 8; | |
560 | ||
561 | *dst = size_dst(src, scale); | |
562 | ||
563 | return scale; | |
564 | } | |
565 | ||
566 | /* rect is guaranteed to not exceed the scaled camera rectangle */ | |
904078f1 | 567 | static void sh_mobile_ceu_set_rect(struct soc_camera_device *icd, |
6a6c8786 GL |
568 | unsigned int out_width, |
569 | unsigned int out_height) | |
904078f1 GL |
570 | { |
571 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); | |
572 | struct sh_mobile_ceu_cam *cam = icd->host_priv; | |
6a6c8786 | 573 | struct v4l2_rect *rect = &cam->ceu_rect; |
904078f1 | 574 | struct sh_mobile_ceu_dev *pcdev = ici->priv; |
6a6c8786 GL |
575 | unsigned int height, width, cdwdr_width, in_width, in_height; |
576 | unsigned int left_offset, top_offset; | |
904078f1 GL |
577 | u32 camor; |
578 | ||
6a6c8786 GL |
579 | dev_dbg(icd->dev.parent, "Crop %ux%u@%u:%u\n", |
580 | rect->width, rect->height, rect->left, rect->top); | |
904078f1 | 581 | |
6a6c8786 GL |
582 | left_offset = rect->left; |
583 | top_offset = rect->top; | |
904078f1 GL |
584 | |
585 | if (pcdev->image_mode) { | |
6a6c8786 | 586 | in_width = rect->width; |
961801bb | 587 | if (!pcdev->is_16bit) { |
961801bb GL |
588 | in_width *= 2; |
589 | left_offset *= 2; | |
590 | } | |
760697be GL |
591 | width = out_width; |
592 | cdwdr_width = out_width; | |
904078f1 | 593 | } else { |
760697be GL |
594 | int bytes_per_line = soc_mbus_bytes_per_line(out_width, |
595 | icd->current_fmt->host_fmt); | |
596 | unsigned int w_factor; | |
6a6c8786 | 597 | |
760697be | 598 | width = out_width; |
6a6c8786 | 599 | |
760697be GL |
600 | switch (icd->current_fmt->host_fmt->packing) { |
601 | case SOC_MBUS_PACKING_2X8_PADHI: | |
602 | w_factor = 2; | |
603 | break; | |
604 | default: | |
605 | w_factor = 1; | |
606 | } | |
961801bb | 607 | |
760697be GL |
608 | in_width = rect->width * w_factor; |
609 | left_offset = left_offset * w_factor; | |
961801bb | 610 | |
760697be GL |
611 | if (bytes_per_line < 0) |
612 | cdwdr_width = out_width; | |
613 | else | |
614 | cdwdr_width = bytes_per_line; | |
904078f1 GL |
615 | } |
616 | ||
6a6c8786 GL |
617 | height = out_height; |
618 | in_height = rect->height; | |
1edcc10d | 619 | if (V4L2_FIELD_NONE != pcdev->field) { |
904078f1 | 620 | height /= 2; |
961801bb GL |
621 | in_height /= 2; |
622 | top_offset /= 2; | |
904078f1 GL |
623 | cdwdr_width *= 2; |
624 | } | |
625 | ||
6a6c8786 | 626 | /* Set CAMOR, CAPWR, CFSZR, take care of CDWDR */ |
904078f1 | 627 | camor = left_offset | (top_offset << 16); |
6a6c8786 GL |
628 | |
629 | dev_geo(icd->dev.parent, | |
630 | "CAMOR 0x%x, CAPWR 0x%x, CFSZR 0x%x, CDWDR 0x%x\n", camor, | |
631 | (in_height << 16) | in_width, (height << 16) | width, | |
632 | cdwdr_width); | |
633 | ||
904078f1 | 634 | ceu_write(pcdev, CAMOR, camor); |
961801bb | 635 | ceu_write(pcdev, CAPWR, (in_height << 16) | in_width); |
6a6c8786 | 636 | ceu_write(pcdev, CFSZR, (height << 16) | width); |
904078f1 GL |
637 | ceu_write(pcdev, CDWDR, cdwdr_width); |
638 | } | |
639 | ||
640 | static u32 capture_save_reset(struct sh_mobile_ceu_dev *pcdev) | |
641 | { | |
642 | u32 capsr = ceu_read(pcdev, CAPSR); | |
643 | ceu_write(pcdev, CAPSR, 1 << 16); /* reset, stop capture */ | |
644 | return capsr; | |
645 | } | |
646 | ||
647 | static void capture_restore(struct sh_mobile_ceu_dev *pcdev, u32 capsr) | |
648 | { | |
649 | unsigned long timeout = jiffies + 10 * HZ; | |
650 | ||
651 | /* | |
652 | * Wait until the end of the current frame. It can take a long time, | |
653 | * but if it has been aborted by a CAPSR reset, it shoule exit sooner. | |
654 | */ | |
655 | while ((ceu_read(pcdev, CSTSR) & 1) && time_before(jiffies, timeout)) | |
656 | msleep(1); | |
657 | ||
658 | if (time_after(jiffies, timeout)) { | |
659 | dev_err(pcdev->ici.v4l2_dev.dev, | |
660 | "Timeout waiting for frame end! Interface problem?\n"); | |
661 | return; | |
662 | } | |
663 | ||
664 | /* Wait until reset clears, this shall not hang... */ | |
665 | while (ceu_read(pcdev, CAPSR) & (1 << 16)) | |
666 | udelay(10); | |
667 | ||
668 | /* Anything to restore? */ | |
669 | if (capsr & ~(1 << 16)) | |
670 | ceu_write(pcdev, CAPSR, capsr); | |
671 | } | |
672 | ||
0d3244d6 MD |
673 | static int sh_mobile_ceu_set_bus_param(struct soc_camera_device *icd, |
674 | __u32 pixfmt) | |
675 | { | |
676 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); | |
677 | struct sh_mobile_ceu_dev *pcdev = ici->priv; | |
904078f1 | 678 | int ret; |
0d3244d6 | 679 | unsigned long camera_flags, common_flags, value; |
904078f1 GL |
680 | int yuv_lineskip; |
681 | struct sh_mobile_ceu_cam *cam = icd->host_priv; | |
682 | u32 capsr = capture_save_reset(pcdev); | |
0d3244d6 MD |
683 | |
684 | camera_flags = icd->ops->query_bus_param(icd); | |
685 | common_flags = soc_camera_bus_param_compatible(camera_flags, | |
c354b400 | 686 | make_bus_param(pcdev)); |
0d3244d6 MD |
687 | if (!common_flags) |
688 | return -EINVAL; | |
689 | ||
85dc1cff KM |
690 | /* Make choises, based on platform preferences */ |
691 | if ((common_flags & SOCAM_HSYNC_ACTIVE_HIGH) && | |
692 | (common_flags & SOCAM_HSYNC_ACTIVE_LOW)) { | |
693 | if (pcdev->pdata->flags & SH_CEU_FLAG_HSYNC_LOW) | |
694 | common_flags &= ~SOCAM_HSYNC_ACTIVE_HIGH; | |
695 | else | |
696 | common_flags &= ~SOCAM_HSYNC_ACTIVE_LOW; | |
697 | } | |
698 | ||
699 | if ((common_flags & SOCAM_VSYNC_ACTIVE_HIGH) && | |
700 | (common_flags & SOCAM_VSYNC_ACTIVE_LOW)) { | |
701 | if (pcdev->pdata->flags & SH_CEU_FLAG_VSYNC_LOW) | |
702 | common_flags &= ~SOCAM_VSYNC_ACTIVE_HIGH; | |
703 | else | |
704 | common_flags &= ~SOCAM_VSYNC_ACTIVE_LOW; | |
705 | } | |
706 | ||
0d3244d6 MD |
707 | ret = icd->ops->set_bus_param(icd, common_flags); |
708 | if (ret < 0) | |
709 | return ret; | |
710 | ||
711 | switch (common_flags & SOCAM_DATAWIDTH_MASK) { | |
712 | case SOCAM_DATAWIDTH_8: | |
904078f1 | 713 | pcdev->is_16bit = 0; |
0d3244d6 MD |
714 | break; |
715 | case SOCAM_DATAWIDTH_16: | |
904078f1 | 716 | pcdev->is_16bit = 1; |
0d3244d6 MD |
717 | break; |
718 | default: | |
719 | return -EINVAL; | |
720 | } | |
721 | ||
722 | ceu_write(pcdev, CRCNTR, 0); | |
723 | ceu_write(pcdev, CRCMPR, 0); | |
724 | ||
8be65dc5 | 725 | value = 0x00000010; /* data fetch by default */ |
961801bb | 726 | yuv_lineskip = 0; |
8be65dc5 | 727 | |
760697be | 728 | switch (icd->current_fmt->host_fmt->fourcc) { |
8be65dc5 MD |
729 | case V4L2_PIX_FMT_NV12: |
730 | case V4L2_PIX_FMT_NV21: | |
731 | yuv_lineskip = 1; /* skip for NV12/21, no skip for NV16/61 */ | |
9e4a56d2 MD |
732 | /* fall-through */ |
733 | case V4L2_PIX_FMT_NV16: | |
734 | case V4L2_PIX_FMT_NV61: | |
760697be GL |
735 | switch (cam->code) { |
736 | case V4L2_MBUS_FMT_YUYV8_2X8_BE: | |
8be65dc5 MD |
737 | value = 0x00000000; /* Cb0, Y0, Cr0, Y1 */ |
738 | break; | |
760697be | 739 | case V4L2_MBUS_FMT_YVYU8_2X8_BE: |
8be65dc5 MD |
740 | value = 0x00000100; /* Cr0, Y0, Cb0, Y1 */ |
741 | break; | |
760697be | 742 | case V4L2_MBUS_FMT_YUYV8_2X8_LE: |
8be65dc5 MD |
743 | value = 0x00000200; /* Y0, Cb0, Y1, Cr0 */ |
744 | break; | |
760697be | 745 | case V4L2_MBUS_FMT_YVYU8_2X8_LE: |
8be65dc5 MD |
746 | value = 0x00000300; /* Y0, Cr0, Y1, Cb0 */ |
747 | break; | |
748 | default: | |
749 | BUG(); | |
750 | } | |
751 | } | |
752 | ||
760697be GL |
753 | if (icd->current_fmt->host_fmt->fourcc == V4L2_PIX_FMT_NV21 || |
754 | icd->current_fmt->host_fmt->fourcc == V4L2_PIX_FMT_NV61) | |
9e4a56d2 | 755 | value ^= 0x00000100; /* swap U, V to change from NV1x->NVx1 */ |
8be65dc5 | 756 | |
7a1a8164 MD |
757 | value |= common_flags & SOCAM_VSYNC_ACTIVE_LOW ? 1 << 1 : 0; |
758 | value |= common_flags & SOCAM_HSYNC_ACTIVE_LOW ? 1 << 0 : 0; | |
904078f1 | 759 | value |= pcdev->is_16bit ? 1 << 12 : 0; |
0d3244d6 MD |
760 | ceu_write(pcdev, CAMCR, value); |
761 | ||
762 | ceu_write(pcdev, CAPCR, 0x00300000); | |
1edcc10d KM |
763 | |
764 | switch (pcdev->field) { | |
765 | case V4L2_FIELD_INTERLACED_TB: | |
766 | value = 0x101; | |
767 | break; | |
768 | case V4L2_FIELD_INTERLACED_BT: | |
769 | value = 0x102; | |
770 | break; | |
771 | default: | |
772 | value = 0; | |
773 | break; | |
774 | } | |
775 | ceu_write(pcdev, CAIFR, value); | |
0d3244d6 | 776 | |
6a6c8786 | 777 | sh_mobile_ceu_set_rect(icd, icd->user_width, icd->user_height); |
0d3244d6 MD |
778 | mdelay(1); |
779 | ||
961801bb | 780 | ceu_write(pcdev, CFLCR, pcdev->cflcr); |
dd54203b | 781 | |
5d28d525 GL |
782 | /* |
783 | * A few words about byte order (observed in Big Endian mode) | |
dd54203b MD |
784 | * |
785 | * In data fetch mode bytes are received in chunks of 8 bytes. | |
786 | * D0, D1, D2, D3, D4, D5, D6, D7 (D0 received first) | |
787 | * | |
788 | * The data is however by default written to memory in reverse order: | |
789 | * D7, D6, D5, D4, D3, D2, D1, D0 (D7 written to lowest byte) | |
790 | * | |
791 | * The lowest three bits of CDOCR allows us to do swapping, | |
2c0a072e MD |
792 | * using 7 we swap the data bytes to match the incoming order: |
793 | * D0, D1, D2, D3, D4, D5, D6, D7 | |
dd54203b | 794 | */ |
8be65dc5 MD |
795 | value = 0x00000017; |
796 | if (yuv_lineskip) | |
797 | value &= ~0x00000010; /* convert 4:2:2 -> 4:2:0 */ | |
798 | ||
799 | ceu_write(pcdev, CDOCR, value); | |
0d3244d6 MD |
800 | ceu_write(pcdev, CFWCR, 0); /* keep "datafetch firewall" disabled */ |
801 | ||
6a6c8786 | 802 | dev_dbg(icd->dev.parent, "S_FMT successful for %c%c%c%c %ux%u\n", |
904078f1 GL |
803 | pixfmt & 0xff, (pixfmt >> 8) & 0xff, |
804 | (pixfmt >> 16) & 0xff, (pixfmt >> 24) & 0xff, | |
6a6c8786 | 805 | icd->user_width, icd->user_height); |
904078f1 GL |
806 | |
807 | capture_restore(pcdev, capsr); | |
808 | ||
0d3244d6 | 809 | /* not in bundle mode: skip CBDSR, CDAYR2, CDACR2, CDBYR2, CDBCR2 */ |
0d3244d6 MD |
810 | return 0; |
811 | } | |
812 | ||
760697be GL |
813 | static int sh_mobile_ceu_try_bus_param(struct soc_camera_device *icd, |
814 | unsigned char buswidth) | |
0d3244d6 MD |
815 | { |
816 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); | |
817 | struct sh_mobile_ceu_dev *pcdev = ici->priv; | |
818 | unsigned long camera_flags, common_flags; | |
819 | ||
820 | camera_flags = icd->ops->query_bus_param(icd); | |
821 | common_flags = soc_camera_bus_param_compatible(camera_flags, | |
c354b400 | 822 | make_bus_param(pcdev)); |
760697be GL |
823 | if (!common_flags || buswidth > 16 || |
824 | (buswidth > 8 && !(common_flags & SOCAM_DATAWIDTH_16))) | |
0d3244d6 MD |
825 | return -EINVAL; |
826 | ||
827 | return 0; | |
828 | } | |
829 | ||
760697be | 830 | static const struct soc_mbus_pixelfmt sh_mobile_ceu_formats[] = { |
9e4a56d2 | 831 | { |
760697be GL |
832 | .fourcc = V4L2_PIX_FMT_NV12, |
833 | .name = "NV12", | |
834 | .bits_per_sample = 12, | |
835 | .packing = SOC_MBUS_PACKING_NONE, | |
836 | .order = SOC_MBUS_ORDER_LE, | |
837 | }, { | |
838 | .fourcc = V4L2_PIX_FMT_NV21, | |
839 | .name = "NV21", | |
840 | .bits_per_sample = 12, | |
841 | .packing = SOC_MBUS_PACKING_NONE, | |
842 | .order = SOC_MBUS_ORDER_LE, | |
843 | }, { | |
844 | .fourcc = V4L2_PIX_FMT_NV16, | |
845 | .name = "NV16", | |
846 | .bits_per_sample = 16, | |
847 | .packing = SOC_MBUS_PACKING_NONE, | |
848 | .order = SOC_MBUS_ORDER_LE, | |
849 | }, { | |
850 | .fourcc = V4L2_PIX_FMT_NV61, | |
851 | .name = "NV61", | |
852 | .bits_per_sample = 16, | |
853 | .packing = SOC_MBUS_PACKING_NONE, | |
854 | .order = SOC_MBUS_ORDER_LE, | |
9e4a56d2 | 855 | }, |
8be65dc5 MD |
856 | }; |
857 | ||
760697be GL |
858 | /* This will be corrected as we get more formats */ |
859 | static bool sh_mobile_ceu_packing_supported(const struct soc_mbus_pixelfmt *fmt) | |
860 | { | |
861 | return fmt->packing == SOC_MBUS_PACKING_NONE || | |
862 | (fmt->bits_per_sample == 8 && | |
863 | fmt->packing == SOC_MBUS_PACKING_2X8_PADHI) || | |
864 | (fmt->bits_per_sample > 8 && | |
865 | fmt->packing == SOC_MBUS_PACKING_EXTEND16); | |
866 | } | |
867 | ||
9414de39 MD |
868 | static int sh_mobile_ceu_get_formats(struct soc_camera_device *icd, int idx, |
869 | struct soc_camera_format_xlate *xlate) | |
870 | { | |
760697be | 871 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
6a6c8786 | 872 | struct device *dev = icd->dev.parent; |
8be65dc5 | 873 | int ret, k, n; |
9414de39 | 874 | int formats = 0; |
904078f1 | 875 | struct sh_mobile_ceu_cam *cam; |
760697be GL |
876 | enum v4l2_mbus_pixelcode code; |
877 | const struct soc_mbus_pixelfmt *fmt; | |
9414de39 | 878 | |
760697be GL |
879 | ret = v4l2_subdev_call(sd, video, enum_mbus_fmt, idx, &code); |
880 | if (ret < 0) | |
881 | /* No more formats */ | |
882 | return 0; | |
883 | ||
884 | fmt = soc_mbus_get_fmtdesc(code); | |
885 | if (!fmt) { | |
886 | dev_err(icd->dev.parent, | |
887 | "Invalid format code #%d: %d\n", idx, code); | |
888 | return -EINVAL; | |
889 | } | |
890 | ||
891 | ret = sh_mobile_ceu_try_bus_param(icd, fmt->bits_per_sample); | |
9414de39 MD |
892 | if (ret < 0) |
893 | return 0; | |
894 | ||
904078f1 GL |
895 | if (!icd->host_priv) { |
896 | cam = kzalloc(sizeof(*cam), GFP_KERNEL); | |
897 | if (!cam) | |
898 | return -ENOMEM; | |
899 | ||
900 | icd->host_priv = cam; | |
901 | } else { | |
902 | cam = icd->host_priv; | |
903 | } | |
904 | ||
c8329acc GL |
905 | /* Beginning of a pass */ |
906 | if (!idx) | |
904078f1 | 907 | cam->extra_fmt = NULL; |
c8329acc | 908 | |
760697be GL |
909 | switch (code) { |
910 | case V4L2_MBUS_FMT_YUYV8_2X8_BE: | |
911 | case V4L2_MBUS_FMT_YVYU8_2X8_BE: | |
912 | case V4L2_MBUS_FMT_YUYV8_2X8_LE: | |
913 | case V4L2_MBUS_FMT_YVYU8_2X8_LE: | |
904078f1 | 914 | if (cam->extra_fmt) |
760697be | 915 | break; |
c8329acc GL |
916 | |
917 | /* | |
918 | * Our case is simple so far: for any of the above four camera | |
919 | * formats we add all our four synthesized NV* formats, so, | |
920 | * just marking the device with a single flag suffices. If | |
921 | * the format generation rules are more complex, you would have | |
922 | * to actually hang your already added / counted formats onto | |
923 | * the host_priv pointer and check whether the format you're | |
924 | * going to add now is already there. | |
925 | */ | |
760697be | 926 | cam->extra_fmt = sh_mobile_ceu_formats; |
c8329acc | 927 | |
8be65dc5 MD |
928 | n = ARRAY_SIZE(sh_mobile_ceu_formats); |
929 | formats += n; | |
930 | for (k = 0; xlate && k < n; k++) { | |
760697be GL |
931 | xlate->host_fmt = &sh_mobile_ceu_formats[k]; |
932 | xlate->code = code; | |
8be65dc5 | 933 | xlate++; |
760697be GL |
934 | dev_dbg(dev, "Providing format %s using code %d\n", |
935 | sh_mobile_ceu_formats[k].name, code); | |
8be65dc5 | 936 | } |
760697be | 937 | break; |
9414de39 | 938 | default: |
760697be GL |
939 | if (!sh_mobile_ceu_packing_supported(fmt)) |
940 | return 0; | |
941 | } | |
942 | ||
943 | /* Generic pass-through */ | |
944 | formats++; | |
945 | if (xlate) { | |
946 | xlate->host_fmt = fmt; | |
947 | xlate->code = code; | |
948 | xlate++; | |
949 | dev_dbg(dev, "Providing format %s in pass-through mode\n", | |
950 | xlate->host_fmt->name); | |
9414de39 MD |
951 | } |
952 | ||
953 | return formats; | |
954 | } | |
955 | ||
904078f1 GL |
956 | static void sh_mobile_ceu_put_formats(struct soc_camera_device *icd) |
957 | { | |
958 | kfree(icd->host_priv); | |
959 | icd->host_priv = NULL; | |
960 | } | |
961 | ||
961801bb | 962 | /* Check if any dimension of r1 is smaller than respective one of r2 */ |
904078f1 GL |
963 | static bool is_smaller(struct v4l2_rect *r1, struct v4l2_rect *r2) |
964 | { | |
965 | return r1->width < r2->width || r1->height < r2->height; | |
966 | } | |
967 | ||
961801bb GL |
968 | /* Check if r1 fails to cover r2 */ |
969 | static bool is_inside(struct v4l2_rect *r1, struct v4l2_rect *r2) | |
970 | { | |
971 | return r1->left > r2->left || r1->top > r2->top || | |
972 | r1->left + r1->width < r2->left + r2->width || | |
973 | r1->top + r1->height < r2->top + r2->height; | |
974 | } | |
975 | ||
6a6c8786 GL |
976 | static unsigned int scale_down(unsigned int size, unsigned int scale) |
977 | { | |
978 | return (size * 4096 + scale / 2) / scale; | |
979 | } | |
980 | ||
981 | static unsigned int scale_up(unsigned int size, unsigned int scale) | |
982 | { | |
983 | return (size * scale + 2048) / 4096; | |
984 | } | |
985 | ||
986 | static unsigned int calc_generic_scale(unsigned int input, unsigned int output) | |
987 | { | |
988 | return (input * 4096 + output / 2) / output; | |
989 | } | |
990 | ||
991 | static int client_g_rect(struct v4l2_subdev *sd, struct v4l2_rect *rect) | |
992 | { | |
993 | struct v4l2_crop crop; | |
994 | struct v4l2_cropcap cap; | |
995 | int ret; | |
996 | ||
997 | crop.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; | |
998 | ||
999 | ret = v4l2_subdev_call(sd, video, g_crop, &crop); | |
1000 | if (!ret) { | |
1001 | *rect = crop.c; | |
1002 | return ret; | |
1003 | } | |
1004 | ||
1005 | /* Camera driver doesn't support .g_crop(), assume default rectangle */ | |
1006 | cap.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; | |
1007 | ||
1008 | ret = v4l2_subdev_call(sd, video, cropcap, &cap); | |
1009 | if (ret < 0) | |
1010 | return ret; | |
1011 | ||
1012 | *rect = cap.defrect; | |
1013 | ||
1014 | return ret; | |
1015 | } | |
1016 | ||
961801bb | 1017 | /* |
6a6c8786 | 1018 | * The common for both scaling and cropping iterative approach is: |
961801bb GL |
1019 | * 1. try if the client can produce exactly what requested by the user |
1020 | * 2. if (1) failed, try to double the client image until we get one big enough | |
1021 | * 3. if (2) failed, try to request the maximum image | |
1022 | */ | |
6a6c8786 GL |
1023 | static int client_s_crop(struct v4l2_subdev *sd, struct v4l2_crop *crop, |
1024 | struct v4l2_crop *cam_crop) | |
09e231b3 | 1025 | { |
6a6c8786 GL |
1026 | struct v4l2_rect *rect = &crop->c, *cam_rect = &cam_crop->c; |
1027 | struct device *dev = sd->v4l2_dev->dev; | |
1028 | struct v4l2_cropcap cap; | |
904078f1 | 1029 | int ret; |
6a6c8786 | 1030 | unsigned int width, height; |
904078f1 | 1031 | |
6a6c8786 GL |
1032 | v4l2_subdev_call(sd, video, s_crop, crop); |
1033 | ret = client_g_rect(sd, cam_rect); | |
1034 | if (ret < 0) | |
1035 | return ret; | |
961801bb | 1036 | |
6a6c8786 GL |
1037 | /* |
1038 | * Now cam_crop contains the current camera input rectangle, and it must | |
1039 | * be within camera cropcap bounds | |
1040 | */ | |
1041 | if (!memcmp(rect, cam_rect, sizeof(*rect))) { | |
1042 | /* Even if camera S_CROP failed, but camera rectangle matches */ | |
1043 | dev_dbg(dev, "Camera S_CROP successful for %ux%u@%u:%u\n", | |
1044 | rect->width, rect->height, rect->left, rect->top); | |
1045 | return 0; | |
904078f1 GL |
1046 | } |
1047 | ||
6a6c8786 GL |
1048 | /* Try to fix cropping, that camera hasn't managed to set */ |
1049 | dev_geo(dev, "Fix camera S_CROP for %ux%u@%u:%u to %ux%u@%u:%u\n", | |
1050 | cam_rect->width, cam_rect->height, | |
08590b96 | 1051 | cam_rect->left, cam_rect->top, |
6a6c8786 GL |
1052 | rect->width, rect->height, rect->left, rect->top); |
1053 | ||
1054 | /* We need sensor maximum rectangle */ | |
1055 | ret = v4l2_subdev_call(sd, video, cropcap, &cap); | |
1056 | if (ret < 0) | |
1057 | return ret; | |
1058 | ||
1059 | soc_camera_limit_side(&rect->left, &rect->width, cap.bounds.left, 2, | |
1060 | cap.bounds.width); | |
1061 | soc_camera_limit_side(&rect->top, &rect->height, cap.bounds.top, 4, | |
1062 | cap.bounds.height); | |
904078f1 GL |
1063 | |
1064 | /* | |
1065 | * Popular special case - some cameras can only handle fixed sizes like | |
1066 | * QVGA, VGA,... Take care to avoid infinite loop. | |
1067 | */ | |
6a6c8786 GL |
1068 | width = max(cam_rect->width, 2); |
1069 | height = max(cam_rect->height, 2); | |
1070 | ||
1071 | while (!ret && (is_smaller(cam_rect, rect) || | |
1072 | is_inside(cam_rect, rect)) && | |
1073 | (cap.bounds.width > width || cap.bounds.height > height)) { | |
961801bb GL |
1074 | |
1075 | width *= 2; | |
1076 | height *= 2; | |
6a6c8786 | 1077 | |
08590b96 GL |
1078 | cam_rect->width = width; |
1079 | cam_rect->height = height; | |
904078f1 | 1080 | |
6a6c8786 GL |
1081 | /* |
1082 | * We do not know what capabilities the camera has to set up | |
1083 | * left and top borders. We could try to be smarter in iterating | |
1084 | * them, e.g., if camera current left is to the right of the | |
1085 | * target left, set it to the middle point between the current | |
1086 | * left and minimum left. But that would add too much | |
1087 | * complexity: we would have to iterate each border separately. | |
1088 | */ | |
1089 | if (cam_rect->left > rect->left) | |
1090 | cam_rect->left = cap.bounds.left; | |
961801bb | 1091 | |
6a6c8786 GL |
1092 | if (cam_rect->left + cam_rect->width < rect->left + rect->width) |
1093 | cam_rect->width = rect->left + rect->width - | |
08590b96 | 1094 | cam_rect->left; |
961801bb | 1095 | |
6a6c8786 GL |
1096 | if (cam_rect->top > rect->top) |
1097 | cam_rect->top = cap.bounds.top; | |
961801bb | 1098 | |
6a6c8786 GL |
1099 | if (cam_rect->top + cam_rect->height < rect->top + rect->height) |
1100 | cam_rect->height = rect->top + rect->height - | |
08590b96 | 1101 | cam_rect->top; |
961801bb | 1102 | |
6a6c8786 GL |
1103 | v4l2_subdev_call(sd, video, s_crop, cam_crop); |
1104 | ret = client_g_rect(sd, cam_rect); | |
1105 | dev_geo(dev, "Camera S_CROP %d for %ux%u@%u:%u\n", ret, | |
1106 | cam_rect->width, cam_rect->height, | |
08590b96 | 1107 | cam_rect->left, cam_rect->top); |
904078f1 GL |
1108 | } |
1109 | ||
6a6c8786 GL |
1110 | /* S_CROP must not modify the rectangle */ |
1111 | if (is_smaller(cam_rect, rect) || is_inside(cam_rect, rect)) { | |
904078f1 GL |
1112 | /* |
1113 | * The camera failed to configure a suitable cropping, | |
1114 | * we cannot use the current rectangle, set to max | |
1115 | */ | |
6a6c8786 GL |
1116 | *cam_rect = cap.bounds; |
1117 | v4l2_subdev_call(sd, video, s_crop, cam_crop); | |
1118 | ret = client_g_rect(sd, cam_rect); | |
1119 | dev_geo(dev, "Camera S_CROP %d for max %ux%u@%u:%u\n", ret, | |
1120 | cam_rect->width, cam_rect->height, | |
08590b96 | 1121 | cam_rect->left, cam_rect->top); |
904078f1 GL |
1122 | } |
1123 | ||
6a6c8786 GL |
1124 | return ret; |
1125 | } | |
1126 | ||
1127 | static int get_camera_scales(struct v4l2_subdev *sd, struct v4l2_rect *rect, | |
1128 | unsigned int *scale_h, unsigned int *scale_v) | |
1129 | { | |
760697be | 1130 | struct v4l2_mbus_framefmt mf; |
6a6c8786 GL |
1131 | int ret; |
1132 | ||
760697be | 1133 | ret = v4l2_subdev_call(sd, video, g_mbus_fmt, &mf); |
6a6c8786 GL |
1134 | if (ret < 0) |
1135 | return ret; | |
1136 | ||
760697be GL |
1137 | *scale_h = calc_generic_scale(rect->width, mf.width); |
1138 | *scale_v = calc_generic_scale(rect->height, mf.height); | |
6a6c8786 GL |
1139 | |
1140 | return 0; | |
1141 | } | |
1142 | ||
1143 | static int get_camera_subwin(struct soc_camera_device *icd, | |
1144 | struct v4l2_rect *cam_subrect, | |
1145 | unsigned int cam_hscale, unsigned int cam_vscale) | |
1146 | { | |
1147 | struct sh_mobile_ceu_cam *cam = icd->host_priv; | |
1148 | struct v4l2_rect *ceu_rect = &cam->ceu_rect; | |
1149 | ||
1150 | if (!ceu_rect->width) { | |
1151 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); | |
1152 | struct device *dev = icd->dev.parent; | |
760697be | 1153 | struct v4l2_mbus_framefmt mf; |
6a6c8786 GL |
1154 | int ret; |
1155 | /* First time */ | |
1156 | ||
760697be | 1157 | ret = v4l2_subdev_call(sd, video, g_mbus_fmt, &mf); |
6a6c8786 GL |
1158 | if (ret < 0) |
1159 | return ret; | |
1160 | ||
760697be | 1161 | dev_geo(dev, "camera fmt %ux%u\n", mf.width, mf.height); |
6a6c8786 | 1162 | |
760697be | 1163 | if (mf.width > 2560) { |
6a6c8786 | 1164 | ceu_rect->width = 2560; |
760697be | 1165 | ceu_rect->left = (mf.width - 2560) / 2; |
6a6c8786 | 1166 | } else { |
760697be | 1167 | ceu_rect->width = mf.width; |
6a6c8786 GL |
1168 | ceu_rect->left = 0; |
1169 | } | |
1170 | ||
760697be | 1171 | if (mf.height > 1920) { |
6a6c8786 | 1172 | ceu_rect->height = 1920; |
760697be | 1173 | ceu_rect->top = (mf.height - 1920) / 2; |
6a6c8786 | 1174 | } else { |
760697be | 1175 | ceu_rect->height = mf.height; |
6a6c8786 GL |
1176 | ceu_rect->top = 0; |
1177 | } | |
1178 | ||
1179 | dev_geo(dev, "initialised CEU rect %ux%u@%u:%u\n", | |
1180 | ceu_rect->width, ceu_rect->height, | |
1181 | ceu_rect->left, ceu_rect->top); | |
1182 | } | |
1183 | ||
1184 | cam_subrect->width = scale_up(ceu_rect->width, cam_hscale); | |
1185 | cam_subrect->left = scale_up(ceu_rect->left, cam_hscale); | |
1186 | cam_subrect->height = scale_up(ceu_rect->height, cam_vscale); | |
1187 | cam_subrect->top = scale_up(ceu_rect->top, cam_vscale); | |
1188 | ||
1189 | return 0; | |
1190 | } | |
1191 | ||
760697be GL |
1192 | static int client_s_fmt(struct soc_camera_device *icd, |
1193 | struct v4l2_mbus_framefmt *mf, bool ceu_can_scale) | |
6a6c8786 GL |
1194 | { |
1195 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); | |
1196 | struct device *dev = icd->dev.parent; | |
760697be | 1197 | unsigned int width = mf->width, height = mf->height, tmp_w, tmp_h; |
6a6c8786 GL |
1198 | unsigned int max_width, max_height; |
1199 | struct v4l2_cropcap cap; | |
1200 | int ret; | |
1201 | ||
1202 | cap.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; | |
1203 | ||
1204 | ret = v4l2_subdev_call(sd, video, cropcap, &cap); | |
1205 | if (ret < 0) | |
1206 | return ret; | |
1207 | ||
1208 | max_width = min(cap.bounds.width, 2560); | |
1209 | max_height = min(cap.bounds.height, 1920); | |
1210 | ||
760697be | 1211 | ret = v4l2_subdev_call(sd, video, s_mbus_fmt, mf); |
6a6c8786 GL |
1212 | if (ret < 0) |
1213 | return ret; | |
1214 | ||
760697be | 1215 | dev_geo(dev, "camera scaled to %ux%u\n", mf->width, mf->height); |
6a6c8786 | 1216 | |
760697be | 1217 | if ((width == mf->width && height == mf->height) || !ceu_can_scale) |
6a6c8786 GL |
1218 | return 0; |
1219 | ||
1220 | /* Camera set a format, but geometry is not precise, try to improve */ | |
760697be GL |
1221 | tmp_w = mf->width; |
1222 | tmp_h = mf->height; | |
6a6c8786 GL |
1223 | |
1224 | /* width <= max_width && height <= max_height - guaranteed by try_fmt */ | |
1225 | while ((width > tmp_w || height > tmp_h) && | |
1226 | tmp_w < max_width && tmp_h < max_height) { | |
1227 | tmp_w = min(2 * tmp_w, max_width); | |
1228 | tmp_h = min(2 * tmp_h, max_height); | |
760697be GL |
1229 | mf->width = tmp_w; |
1230 | mf->height = tmp_h; | |
1231 | ret = v4l2_subdev_call(sd, video, s_mbus_fmt, mf); | |
6a6c8786 | 1232 | dev_geo(dev, "Camera scaled to %ux%u\n", |
760697be | 1233 | mf->width, mf->height); |
6a6c8786 GL |
1234 | if (ret < 0) { |
1235 | /* This shouldn't happen */ | |
1236 | dev_err(dev, "Client failed to set format: %d\n", ret); | |
1237 | return ret; | |
1238 | } | |
1239 | } | |
1240 | ||
1241 | return 0; | |
1242 | } | |
1243 | ||
1244 | /** | |
1245 | * @rect - camera cropped rectangle | |
1246 | * @sub_rect - CEU cropped rectangle, mapped back to camera input area | |
1247 | * @ceu_rect - on output calculated CEU crop rectangle | |
1248 | */ | |
1249 | static int client_scale(struct soc_camera_device *icd, struct v4l2_rect *rect, | |
1250 | struct v4l2_rect *sub_rect, struct v4l2_rect *ceu_rect, | |
760697be | 1251 | struct v4l2_mbus_framefmt *mf, bool ceu_can_scale) |
6a6c8786 GL |
1252 | { |
1253 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); | |
1254 | struct sh_mobile_ceu_cam *cam = icd->host_priv; | |
1255 | struct device *dev = icd->dev.parent; | |
760697be | 1256 | struct v4l2_mbus_framefmt mf_tmp = *mf; |
6a6c8786 GL |
1257 | unsigned int scale_h, scale_v; |
1258 | int ret; | |
1259 | ||
1260 | /* 5. Apply iterative camera S_FMT for camera user window. */ | |
760697be | 1261 | ret = client_s_fmt(icd, &mf_tmp, ceu_can_scale); |
6a6c8786 GL |
1262 | if (ret < 0) |
1263 | return ret; | |
1264 | ||
1265 | dev_geo(dev, "5: camera scaled to %ux%u\n", | |
760697be | 1266 | mf_tmp.width, mf_tmp.height); |
6a6c8786 GL |
1267 | |
1268 | /* 6. Retrieve camera output window (g_fmt) */ | |
1269 | ||
760697be | 1270 | /* unneeded - it is already in "mf_tmp" */ |
6a6c8786 GL |
1271 | |
1272 | /* 7. Calculate new camera scales. */ | |
1273 | ret = get_camera_scales(sd, rect, &scale_h, &scale_v); | |
1274 | if (ret < 0) | |
1275 | return ret; | |
1276 | ||
1277 | dev_geo(dev, "7: camera scales %u:%u\n", scale_h, scale_v); | |
1278 | ||
760697be GL |
1279 | cam->cam_width = mf_tmp.width; |
1280 | cam->cam_height = mf_tmp.height; | |
1281 | mf->width = mf_tmp.width; | |
1282 | mf->height = mf_tmp.height; | |
1283 | mf->colorspace = mf_tmp.colorspace; | |
904078f1 GL |
1284 | |
1285 | /* | |
6a6c8786 GL |
1286 | * 8. Calculate new CEU crop - apply camera scales to previously |
1287 | * calculated "effective" crop. | |
904078f1 | 1288 | */ |
6a6c8786 GL |
1289 | ceu_rect->left = scale_down(sub_rect->left, scale_h); |
1290 | ceu_rect->width = scale_down(sub_rect->width, scale_h); | |
1291 | ceu_rect->top = scale_down(sub_rect->top, scale_v); | |
1292 | ceu_rect->height = scale_down(sub_rect->height, scale_v); | |
1293 | ||
1294 | dev_geo(dev, "8: new CEU rect %ux%u@%u:%u\n", | |
1295 | ceu_rect->width, ceu_rect->height, | |
1296 | ceu_rect->left, ceu_rect->top); | |
1297 | ||
1298 | return 0; | |
1299 | } | |
1300 | ||
1301 | /* Get combined scales */ | |
1302 | static int get_scales(struct soc_camera_device *icd, | |
1303 | unsigned int *scale_h, unsigned int *scale_v) | |
1304 | { | |
1305 | struct sh_mobile_ceu_cam *cam = icd->host_priv; | |
1306 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); | |
1307 | struct v4l2_crop cam_crop; | |
1308 | unsigned int width_in, height_in; | |
1309 | int ret; | |
904078f1 | 1310 | |
6a6c8786 | 1311 | cam_crop.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; |
904078f1 | 1312 | |
6a6c8786 GL |
1313 | ret = client_g_rect(sd, &cam_crop.c); |
1314 | if (ret < 0) | |
1315 | return ret; | |
904078f1 | 1316 | |
6a6c8786 GL |
1317 | ret = get_camera_scales(sd, &cam_crop.c, scale_h, scale_v); |
1318 | if (ret < 0) | |
1319 | return ret; | |
961801bb | 1320 | |
6a6c8786 GL |
1321 | width_in = scale_up(cam->ceu_rect.width, *scale_h); |
1322 | height_in = scale_up(cam->ceu_rect.height, *scale_v); | |
961801bb | 1323 | |
8cf1fec8 GL |
1324 | *scale_h = calc_generic_scale(width_in, icd->user_width); |
1325 | *scale_v = calc_generic_scale(height_in, icd->user_height); | |
6a6c8786 GL |
1326 | |
1327 | return 0; | |
1328 | } | |
1329 | ||
1330 | /* | |
1331 | * CEU can scale and crop, but we don't want to waste bandwidth and kill the | |
1332 | * framerate by always requesting the maximum image from the client. See | |
1333 | * Documentation/video4linux/sh_mobile_camera_ceu.txt for a description of | |
1334 | * scaling and cropping algorithms and for the meaning of referenced here steps. | |
1335 | */ | |
1336 | static int sh_mobile_ceu_set_crop(struct soc_camera_device *icd, | |
1337 | struct v4l2_crop *a) | |
1338 | { | |
1339 | struct v4l2_rect *rect = &a->c; | |
1340 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); | |
1341 | struct sh_mobile_ceu_dev *pcdev = ici->priv; | |
1342 | struct v4l2_crop cam_crop; | |
1343 | struct sh_mobile_ceu_cam *cam = icd->host_priv; | |
1344 | struct v4l2_rect *cam_rect = &cam_crop.c, *ceu_rect = &cam->ceu_rect; | |
1345 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); | |
1346 | struct device *dev = icd->dev.parent; | |
760697be | 1347 | struct v4l2_mbus_framefmt mf; |
6a6c8786 GL |
1348 | unsigned int scale_comb_h, scale_comb_v, scale_ceu_h, scale_ceu_v, |
1349 | out_width, out_height; | |
1350 | u32 capsr, cflcr; | |
1351 | int ret; | |
1352 | ||
1353 | /* 1. Calculate current combined scales. */ | |
1354 | ret = get_scales(icd, &scale_comb_h, &scale_comb_v); | |
1355 | if (ret < 0) | |
1356 | return ret; | |
1357 | ||
1358 | dev_geo(dev, "1: combined scales %u:%u\n", scale_comb_h, scale_comb_v); | |
1359 | ||
1360 | /* 2. Apply iterative camera S_CROP for new input window. */ | |
1361 | ret = client_s_crop(sd, a, &cam_crop); | |
1362 | if (ret < 0) | |
1363 | return ret; | |
1364 | ||
1365 | dev_geo(dev, "2: camera cropped to %ux%u@%u:%u\n", | |
1366 | cam_rect->width, cam_rect->height, | |
1367 | cam_rect->left, cam_rect->top); | |
1368 | ||
1369 | /* On success cam_crop contains current camera crop */ | |
1370 | ||
1371 | /* | |
1372 | * 3. If old combined scales applied to new crop produce an impossible | |
1373 | * user window, adjust scales to produce nearest possible window. | |
1374 | */ | |
1375 | out_width = scale_down(rect->width, scale_comb_h); | |
1376 | out_height = scale_down(rect->height, scale_comb_v); | |
1377 | ||
1378 | if (out_width > 2560) | |
1379 | out_width = 2560; | |
1380 | else if (out_width < 2) | |
1381 | out_width = 2; | |
1382 | ||
1383 | if (out_height > 1920) | |
1384 | out_height = 1920; | |
1385 | else if (out_height < 4) | |
1386 | out_height = 4; | |
1387 | ||
1388 | dev_geo(dev, "3: Adjusted output %ux%u\n", out_width, out_height); | |
1389 | ||
1390 | /* 4. Use G_CROP to retrieve actual input window: already in cam_crop */ | |
1391 | ||
1392 | /* | |
1393 | * 5. Using actual input window and calculated combined scales calculate | |
1394 | * camera target output window. | |
1395 | */ | |
760697be GL |
1396 | mf.width = scale_down(cam_rect->width, scale_comb_h); |
1397 | mf.height = scale_down(cam_rect->height, scale_comb_v); | |
6a6c8786 | 1398 | |
760697be | 1399 | dev_geo(dev, "5: camera target %ux%u\n", mf.width, mf.height); |
6a6c8786 GL |
1400 | |
1401 | /* 6. - 9. */ | |
760697be | 1402 | mf.code = cam->code; |
1edcc10d | 1403 | mf.field = pcdev->field; |
6a6c8786 GL |
1404 | |
1405 | capsr = capture_save_reset(pcdev); | |
1406 | dev_dbg(dev, "CAPSR 0x%x, CFLCR 0x%x\n", capsr, pcdev->cflcr); | |
1407 | ||
1408 | /* Make relative to camera rectangle */ | |
760697be GL |
1409 | rect->left -= cam_rect->left; |
1410 | rect->top -= cam_rect->top; | |
6a6c8786 | 1411 | |
760697be | 1412 | ret = client_scale(icd, cam_rect, rect, ceu_rect, &mf, |
1edcc10d KM |
1413 | pcdev->image_mode && |
1414 | V4L2_FIELD_NONE == pcdev->field); | |
6a6c8786 GL |
1415 | |
1416 | dev_geo(dev, "6-9: %d\n", ret); | |
1417 | ||
1418 | /* 10. Use CEU cropping to crop to the new window. */ | |
1419 | sh_mobile_ceu_set_rect(icd, out_width, out_height); | |
1420 | ||
1421 | dev_geo(dev, "10: CEU cropped to %ux%u@%u:%u\n", | |
1422 | ceu_rect->width, ceu_rect->height, | |
1423 | ceu_rect->left, ceu_rect->top); | |
1424 | ||
1425 | /* | |
1426 | * 11. Calculate CEU scales from camera scales from results of (10) and | |
1427 | * user window from (3) | |
1428 | */ | |
1429 | scale_ceu_h = calc_scale(ceu_rect->width, &out_width); | |
1430 | scale_ceu_v = calc_scale(ceu_rect->height, &out_height); | |
1431 | ||
1432 | dev_geo(dev, "11: CEU scales %u:%u\n", scale_ceu_h, scale_ceu_v); | |
1433 | ||
1434 | /* 12. Apply CEU scales. */ | |
1435 | cflcr = scale_ceu_h | (scale_ceu_v << 16); | |
1436 | if (cflcr != pcdev->cflcr) { | |
1437 | pcdev->cflcr = cflcr; | |
1438 | ceu_write(pcdev, CFLCR, cflcr); | |
1439 | } | |
1440 | ||
1441 | /* Restore capture */ | |
904078f1 GL |
1442 | if (pcdev->active) |
1443 | capsr |= 1; | |
904078f1 GL |
1444 | capture_restore(pcdev, capsr); |
1445 | ||
6a6c8786 GL |
1446 | icd->user_width = out_width; |
1447 | icd->user_height = out_height; | |
1448 | ||
904078f1 GL |
1449 | /* Even if only camera cropping succeeded */ |
1450 | return ret; | |
09e231b3 GL |
1451 | } |
1452 | ||
961801bb | 1453 | /* Similar to set_crop multistage iterative algorithm */ |
d8fac217 | 1454 | static int sh_mobile_ceu_set_fmt(struct soc_camera_device *icd, |
09e231b3 | 1455 | struct v4l2_format *f) |
0d3244d6 | 1456 | { |
9414de39 | 1457 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); |
961801bb | 1458 | struct sh_mobile_ceu_dev *pcdev = ici->priv; |
904078f1 GL |
1459 | struct sh_mobile_ceu_cam *cam = icd->host_priv; |
1460 | struct v4l2_pix_format *pix = &f->fmt.pix; | |
760697be | 1461 | struct v4l2_mbus_framefmt mf; |
c9c1f1c0 | 1462 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
6a6c8786 | 1463 | struct device *dev = icd->dev.parent; |
904078f1 | 1464 | __u32 pixfmt = pix->pixelformat; |
9414de39 | 1465 | const struct soc_camera_format_xlate *xlate; |
6a6c8786 GL |
1466 | struct v4l2_crop cam_crop; |
1467 | struct v4l2_rect *cam_rect = &cam_crop.c, cam_subrect, ceu_rect; | |
1468 | unsigned int scale_cam_h, scale_cam_v; | |
1469 | u16 scale_v, scale_h; | |
1470 | int ret; | |
1edcc10d KM |
1471 | bool image_mode; |
1472 | enum v4l2_field field; | |
961801bb GL |
1473 | |
1474 | switch (pix->field) { | |
961801bb GL |
1475 | default: |
1476 | pix->field = V4L2_FIELD_NONE; | |
1477 | /* fall-through */ | |
1edcc10d KM |
1478 | case V4L2_FIELD_INTERLACED_TB: |
1479 | case V4L2_FIELD_INTERLACED_BT: | |
961801bb | 1480 | case V4L2_FIELD_NONE: |
1edcc10d KM |
1481 | field = pix->field; |
1482 | break; | |
1483 | case V4L2_FIELD_INTERLACED: | |
1484 | field = V4L2_FIELD_INTERLACED_TB; | |
961801bb GL |
1485 | break; |
1486 | } | |
25c4d74e | 1487 | |
9414de39 MD |
1488 | xlate = soc_camera_xlate_by_fourcc(icd, pixfmt); |
1489 | if (!xlate) { | |
6a6c8786 | 1490 | dev_warn(dev, "Format %x not found\n", pixfmt); |
9414de39 | 1491 | return -EINVAL; |
25c4d74e GL |
1492 | } |
1493 | ||
6a6c8786 GL |
1494 | /* 1. Calculate current camera scales. */ |
1495 | cam_crop.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; | |
1496 | ||
1497 | ret = client_g_rect(sd, cam_rect); | |
1498 | if (ret < 0) | |
1499 | return ret; | |
1500 | ||
1501 | ret = get_camera_scales(sd, cam_rect, &scale_cam_h, &scale_cam_v); | |
1502 | if (ret < 0) | |
1503 | return ret; | |
1504 | ||
1505 | dev_geo(dev, "1: camera scales %u:%u\n", scale_cam_h, scale_cam_v); | |
1506 | ||
1507 | /* | |
1508 | * 2. Calculate "effective" input crop (sensor subwindow) - CEU crop | |
1509 | * scaled back at current camera scales onto input window. | |
1510 | */ | |
1511 | ret = get_camera_subwin(icd, &cam_subrect, scale_cam_h, scale_cam_v); | |
961801bb GL |
1512 | if (ret < 0) |
1513 | return ret; | |
1514 | ||
6a6c8786 GL |
1515 | dev_geo(dev, "2: subwin %ux%u@%u:%u\n", |
1516 | cam_subrect.width, cam_subrect.height, | |
1517 | cam_subrect.left, cam_subrect.top); | |
1518 | ||
1519 | /* | |
1520 | * 3. Calculate new combined scales from "effective" input window to | |
1521 | * requested user window. | |
1522 | */ | |
1523 | scale_h = calc_generic_scale(cam_subrect.width, pix->width); | |
1524 | scale_v = calc_generic_scale(cam_subrect.height, pix->height); | |
1525 | ||
1526 | dev_geo(dev, "3: scales %u:%u\n", scale_h, scale_v); | |
1527 | ||
1528 | /* | |
1529 | * 4. Calculate camera output window by applying combined scales to real | |
1530 | * input window. | |
1531 | */ | |
760697be GL |
1532 | mf.width = scale_down(cam_rect->width, scale_h); |
1533 | mf.height = scale_down(cam_rect->height, scale_v); | |
1534 | mf.field = pix->field; | |
1535 | mf.colorspace = pix->colorspace; | |
1536 | mf.code = xlate->code; | |
6a6c8786 | 1537 | |
961801bb GL |
1538 | switch (pixfmt) { |
1539 | case V4L2_PIX_FMT_NV12: | |
1540 | case V4L2_PIX_FMT_NV21: | |
1541 | case V4L2_PIX_FMT_NV16: | |
1542 | case V4L2_PIX_FMT_NV61: | |
6a6c8786 | 1543 | image_mode = true; |
961801bb GL |
1544 | break; |
1545 | default: | |
6a6c8786 | 1546 | image_mode = false; |
9414de39 | 1547 | } |
25c4d74e | 1548 | |
760697be | 1549 | dev_geo(dev, "4: camera output %ux%u\n", mf.width, mf.height); |
961801bb | 1550 | |
6a6c8786 | 1551 | /* 5. - 9. */ |
760697be | 1552 | ret = client_scale(icd, cam_rect, &cam_subrect, &ceu_rect, &mf, |
1edcc10d | 1553 | image_mode && V4L2_FIELD_NONE == field); |
6a6c8786 GL |
1554 | |
1555 | dev_geo(dev, "5-9: client scale %d\n", ret); | |
1556 | ||
1557 | /* Done with the camera. Now see if we can improve the result */ | |
1558 | ||
1559 | dev_dbg(dev, "Camera %d fmt %ux%u, requested %ux%u\n", | |
760697be | 1560 | ret, mf.width, mf.height, pix->width, pix->height); |
6a6c8786 GL |
1561 | if (ret < 0) |
1562 | return ret; | |
1563 | ||
760697be GL |
1564 | if (mf.code != xlate->code) |
1565 | return -EINVAL; | |
1566 | ||
6a6c8786 | 1567 | /* 10. Use CEU scaling to scale to the requested user window. */ |
961801bb GL |
1568 | |
1569 | /* We cannot scale up */ | |
760697be GL |
1570 | if (pix->width > mf.width) |
1571 | pix->width = mf.width; | |
6a6c8786 GL |
1572 | if (pix->width > ceu_rect.width) |
1573 | pix->width = ceu_rect.width; | |
961801bb | 1574 | |
760697be GL |
1575 | if (pix->height > mf.height) |
1576 | pix->height = mf.height; | |
6a6c8786 GL |
1577 | if (pix->height > ceu_rect.height) |
1578 | pix->height = ceu_rect.height; | |
961801bb | 1579 | |
760697be GL |
1580 | pix->colorspace = mf.colorspace; |
1581 | ||
1582 | if (image_mode) { | |
1583 | /* Scale pix->{width x height} down to width x height */ | |
1584 | scale_h = calc_scale(ceu_rect.width, &pix->width); | |
1585 | scale_v = calc_scale(ceu_rect.height, &pix->height); | |
1586 | ||
1587 | pcdev->cflcr = scale_h | (scale_v << 16); | |
1588 | } else { | |
1589 | pix->width = ceu_rect.width; | |
1590 | pix->height = ceu_rect.height; | |
1591 | scale_h = scale_v = 0; | |
1592 | pcdev->cflcr = 0; | |
1593 | } | |
961801bb | 1594 | |
6a6c8786 GL |
1595 | dev_geo(dev, "10: W: %u : 0x%x = %u, H: %u : 0x%x = %u\n", |
1596 | ceu_rect.width, scale_h, pix->width, | |
1597 | ceu_rect.height, scale_v, pix->height); | |
961801bb | 1598 | |
760697be GL |
1599 | cam->code = xlate->code; |
1600 | cam->ceu_rect = ceu_rect; | |
1601 | icd->current_fmt = xlate; | |
961801bb | 1602 | |
1edcc10d | 1603 | pcdev->field = field; |
6a6c8786 | 1604 | pcdev->image_mode = image_mode; |
961801bb GL |
1605 | |
1606 | return 0; | |
0d3244d6 MD |
1607 | } |
1608 | ||
d8fac217 GL |
1609 | static int sh_mobile_ceu_try_fmt(struct soc_camera_device *icd, |
1610 | struct v4l2_format *f) | |
0d3244d6 | 1611 | { |
9414de39 | 1612 | const struct soc_camera_format_xlate *xlate; |
904078f1 | 1613 | struct v4l2_pix_format *pix = &f->fmt.pix; |
c9c1f1c0 | 1614 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
760697be | 1615 | struct v4l2_mbus_framefmt mf; |
904078f1 | 1616 | __u32 pixfmt = pix->pixelformat; |
961801bb | 1617 | int width, height; |
ccab8a29 | 1618 | int ret; |
a2c8c68c | 1619 | |
9414de39 MD |
1620 | xlate = soc_camera_xlate_by_fourcc(icd, pixfmt); |
1621 | if (!xlate) { | |
0166b743 | 1622 | dev_warn(icd->dev.parent, "Format %x not found\n", pixfmt); |
25c4d74e | 1623 | return -EINVAL; |
9414de39 | 1624 | } |
25c4d74e | 1625 | |
0d3244d6 MD |
1626 | /* FIXME: calculate using depth and bus width */ |
1627 | ||
904078f1 GL |
1628 | v4l_bound_align_image(&pix->width, 2, 2560, 1, |
1629 | &pix->height, 4, 1920, 2, 0); | |
0d3244d6 | 1630 | |
961801bb GL |
1631 | width = pix->width; |
1632 | height = pix->height; | |
1633 | ||
760697be GL |
1634 | pix->bytesperline = soc_mbus_bytes_per_line(width, xlate->host_fmt); |
1635 | if (pix->bytesperline < 0) | |
1636 | return pix->bytesperline; | |
1637 | pix->sizeimage = height * pix->bytesperline; | |
979ea1dd | 1638 | |
0d3244d6 | 1639 | /* limit to sensor capabilities */ |
760697be GL |
1640 | mf.width = pix->width; |
1641 | mf.height = pix->height; | |
1642 | mf.field = pix->field; | |
1643 | mf.code = xlate->code; | |
1644 | mf.colorspace = pix->colorspace; | |
1645 | ||
1646 | ret = v4l2_subdev_call(sd, video, try_mbus_fmt, &mf); | |
ccab8a29 KM |
1647 | if (ret < 0) |
1648 | return ret; | |
1649 | ||
760697be GL |
1650 | pix->width = mf.width; |
1651 | pix->height = mf.height; | |
1652 | pix->field = mf.field; | |
1653 | pix->colorspace = mf.colorspace; | |
1654 | ||
961801bb GL |
1655 | switch (pixfmt) { |
1656 | case V4L2_PIX_FMT_NV12: | |
1657 | case V4L2_PIX_FMT_NV21: | |
1658 | case V4L2_PIX_FMT_NV16: | |
1659 | case V4L2_PIX_FMT_NV61: | |
1660 | /* FIXME: check against rect_max after converting soc-camera */ | |
1661 | /* We can scale precisely, need a bigger image from camera */ | |
1662 | if (pix->width < width || pix->height < height) { | |
760697be GL |
1663 | /* |
1664 | * We presume, the sensor behaves sanely, i.e., if | |
1665 | * requested a bigger rectangle, it will not return a | |
1666 | * smaller one. | |
1667 | */ | |
1668 | mf.width = 2560; | |
1669 | mf.height = 1920; | |
1670 | ret = v4l2_subdev_call(sd, video, try_mbus_fmt, &mf); | |
961801bb GL |
1671 | if (ret < 0) { |
1672 | /* Shouldn't actually happen... */ | |
0166b743 | 1673 | dev_err(icd->dev.parent, |
760697be GL |
1674 | "FIXME: client try_fmt() = %d\n", ret); |
1675 | return ret; | |
961801bb GL |
1676 | } |
1677 | } | |
760697be GL |
1678 | /* We will scale exactly */ |
1679 | if (mf.width > width) | |
961801bb | 1680 | pix->width = width; |
760697be | 1681 | if (mf.height > height) |
961801bb | 1682 | pix->height = height; |
ccab8a29 KM |
1683 | } |
1684 | ||
1685 | return ret; | |
0d3244d6 MD |
1686 | } |
1687 | ||
1688 | static int sh_mobile_ceu_reqbufs(struct soc_camera_file *icf, | |
1689 | struct v4l2_requestbuffers *p) | |
1690 | { | |
1691 | int i; | |
1692 | ||
5d28d525 GL |
1693 | /* |
1694 | * This is for locking debugging only. I removed spinlocks and now I | |
0d3244d6 MD |
1695 | * check whether .prepare is ever called on a linked buffer, or whether |
1696 | * a dma IRQ can occur for an in-work or unlinked buffer. Until now | |
5d28d525 GL |
1697 | * it hadn't triggered |
1698 | */ | |
0d3244d6 MD |
1699 | for (i = 0; i < p->count; i++) { |
1700 | struct sh_mobile_ceu_buffer *buf; | |
1701 | ||
1702 | buf = container_of(icf->vb_vidq.bufs[i], | |
1703 | struct sh_mobile_ceu_buffer, vb); | |
1704 | INIT_LIST_HEAD(&buf->vb.queue); | |
1705 | } | |
1706 | ||
1707 | return 0; | |
1708 | } | |
1709 | ||
1710 | static unsigned int sh_mobile_ceu_poll(struct file *file, poll_table *pt) | |
1711 | { | |
1712 | struct soc_camera_file *icf = file->private_data; | |
1713 | struct sh_mobile_ceu_buffer *buf; | |
1714 | ||
1715 | buf = list_entry(icf->vb_vidq.stream.next, | |
1716 | struct sh_mobile_ceu_buffer, vb.stream); | |
1717 | ||
1718 | poll_wait(file, &buf->vb.done, pt); | |
1719 | ||
1720 | if (buf->vb.state == VIDEOBUF_DONE || | |
1721 | buf->vb.state == VIDEOBUF_ERROR) | |
1722 | return POLLIN|POLLRDNORM; | |
1723 | ||
1724 | return 0; | |
1725 | } | |
1726 | ||
1727 | static int sh_mobile_ceu_querycap(struct soc_camera_host *ici, | |
1728 | struct v4l2_capability *cap) | |
1729 | { | |
1730 | strlcpy(cap->card, "SuperH_Mobile_CEU", sizeof(cap->card)); | |
1731 | cap->version = KERNEL_VERSION(0, 0, 5); | |
1732 | cap->capabilities = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING; | |
1733 | return 0; | |
1734 | } | |
1735 | ||
1736 | static void sh_mobile_ceu_init_videobuf(struct videobuf_queue *q, | |
1737 | struct soc_camera_device *icd) | |
1738 | { | |
1739 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); | |
1740 | struct sh_mobile_ceu_dev *pcdev = ici->priv; | |
1741 | ||
1742 | videobuf_queue_dma_contig_init(q, | |
1743 | &sh_mobile_ceu_videobuf_ops, | |
0166b743 | 1744 | icd->dev.parent, &pcdev->lock, |
0d3244d6 | 1745 | V4L2_BUF_TYPE_VIDEO_CAPTURE, |
1edcc10d | 1746 | pcdev->field, |
0d3244d6 MD |
1747 | sizeof(struct sh_mobile_ceu_buffer), |
1748 | icd); | |
1749 | } | |
1750 | ||
4a6110bc GL |
1751 | static int sh_mobile_ceu_get_ctrl(struct soc_camera_device *icd, |
1752 | struct v4l2_control *ctrl) | |
1753 | { | |
1754 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); | |
1755 | struct sh_mobile_ceu_dev *pcdev = ici->priv; | |
1756 | u32 val; | |
1757 | ||
1758 | switch (ctrl->id) { | |
1759 | case V4L2_CID_SHARPNESS: | |
1760 | val = ceu_read(pcdev, CLFCR); | |
1761 | ctrl->value = val ^ 1; | |
1762 | return 0; | |
1763 | } | |
1764 | return -ENOIOCTLCMD; | |
1765 | } | |
1766 | ||
1767 | static int sh_mobile_ceu_set_ctrl(struct soc_camera_device *icd, | |
1768 | struct v4l2_control *ctrl) | |
1769 | { | |
1770 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); | |
1771 | struct sh_mobile_ceu_dev *pcdev = ici->priv; | |
1772 | ||
1773 | switch (ctrl->id) { | |
1774 | case V4L2_CID_SHARPNESS: | |
760697be | 1775 | switch (icd->current_fmt->host_fmt->fourcc) { |
4a6110bc GL |
1776 | case V4L2_PIX_FMT_NV12: |
1777 | case V4L2_PIX_FMT_NV21: | |
1778 | case V4L2_PIX_FMT_NV16: | |
1779 | case V4L2_PIX_FMT_NV61: | |
1780 | ceu_write(pcdev, CLFCR, !ctrl->value); | |
1781 | return 0; | |
1782 | } | |
1783 | return -EINVAL; | |
1784 | } | |
1785 | return -ENOIOCTLCMD; | |
1786 | } | |
1787 | ||
1788 | static const struct v4l2_queryctrl sh_mobile_ceu_controls[] = { | |
1789 | { | |
1790 | .id = V4L2_CID_SHARPNESS, | |
1791 | .type = V4L2_CTRL_TYPE_BOOLEAN, | |
1792 | .name = "Low-pass filter", | |
1793 | .minimum = 0, | |
1794 | .maximum = 1, | |
1795 | .step = 1, | |
1796 | .default_value = 0, | |
1797 | }, | |
1798 | }; | |
1799 | ||
0d3244d6 MD |
1800 | static struct soc_camera_host_ops sh_mobile_ceu_host_ops = { |
1801 | .owner = THIS_MODULE, | |
1802 | .add = sh_mobile_ceu_add_device, | |
1803 | .remove = sh_mobile_ceu_remove_device, | |
9414de39 | 1804 | .get_formats = sh_mobile_ceu_get_formats, |
904078f1 | 1805 | .put_formats = sh_mobile_ceu_put_formats, |
09e231b3 | 1806 | .set_crop = sh_mobile_ceu_set_crop, |
d8fac217 GL |
1807 | .set_fmt = sh_mobile_ceu_set_fmt, |
1808 | .try_fmt = sh_mobile_ceu_try_fmt, | |
4a6110bc GL |
1809 | .set_ctrl = sh_mobile_ceu_set_ctrl, |
1810 | .get_ctrl = sh_mobile_ceu_get_ctrl, | |
0d3244d6 MD |
1811 | .reqbufs = sh_mobile_ceu_reqbufs, |
1812 | .poll = sh_mobile_ceu_poll, | |
1813 | .querycap = sh_mobile_ceu_querycap, | |
0d3244d6 MD |
1814 | .set_bus_param = sh_mobile_ceu_set_bus_param, |
1815 | .init_videobuf = sh_mobile_ceu_init_videobuf, | |
4a6110bc GL |
1816 | .controls = sh_mobile_ceu_controls, |
1817 | .num_controls = ARRAY_SIZE(sh_mobile_ceu_controls), | |
0d3244d6 MD |
1818 | }; |
1819 | ||
979ea1dd | 1820 | static int __devinit sh_mobile_ceu_probe(struct platform_device *pdev) |
0d3244d6 MD |
1821 | { |
1822 | struct sh_mobile_ceu_dev *pcdev; | |
1823 | struct resource *res; | |
1824 | void __iomem *base; | |
1825 | unsigned int irq; | |
1826 | int err = 0; | |
1827 | ||
1828 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); | |
1829 | irq = platform_get_irq(pdev, 0); | |
b89fc2e5 | 1830 | if (!res || (int)irq <= 0) { |
0d3244d6 MD |
1831 | dev_err(&pdev->dev, "Not enough CEU platform resources.\n"); |
1832 | err = -ENODEV; | |
1833 | goto exit; | |
1834 | } | |
1835 | ||
1836 | pcdev = kzalloc(sizeof(*pcdev), GFP_KERNEL); | |
1837 | if (!pcdev) { | |
1838 | dev_err(&pdev->dev, "Could not allocate pcdev\n"); | |
1839 | err = -ENOMEM; | |
1840 | goto exit; | |
1841 | } | |
1842 | ||
0d3244d6 MD |
1843 | INIT_LIST_HEAD(&pcdev->capture); |
1844 | spin_lock_init(&pcdev->lock); | |
1845 | ||
1846 | pcdev->pdata = pdev->dev.platform_data; | |
1847 | if (!pcdev->pdata) { | |
1848 | err = -EINVAL; | |
1849 | dev_err(&pdev->dev, "CEU platform data not set.\n"); | |
1850 | goto exit_kfree; | |
1851 | } | |
1852 | ||
eb6c8558 | 1853 | base = ioremap_nocache(res->start, resource_size(res)); |
0d3244d6 MD |
1854 | if (!base) { |
1855 | err = -ENXIO; | |
1856 | dev_err(&pdev->dev, "Unable to ioremap CEU registers.\n"); | |
1857 | goto exit_kfree; | |
1858 | } | |
1859 | ||
1860 | pcdev->irq = irq; | |
1861 | pcdev->base = base; | |
1862 | pcdev->video_limit = 0; /* only enabled if second resource exists */ | |
0d3244d6 MD |
1863 | |
1864 | res = platform_get_resource(pdev, IORESOURCE_MEM, 1); | |
1865 | if (res) { | |
1866 | err = dma_declare_coherent_memory(&pdev->dev, res->start, | |
1867 | res->start, | |
eb6c8558 | 1868 | resource_size(res), |
0d3244d6 MD |
1869 | DMA_MEMORY_MAP | |
1870 | DMA_MEMORY_EXCLUSIVE); | |
1871 | if (!err) { | |
1872 | dev_err(&pdev->dev, "Unable to declare CEU memory.\n"); | |
1873 | err = -ENXIO; | |
1874 | goto exit_iounmap; | |
1875 | } | |
1876 | ||
eb6c8558 | 1877 | pcdev->video_limit = resource_size(res); |
0d3244d6 MD |
1878 | } |
1879 | ||
1880 | /* request irq */ | |
1881 | err = request_irq(pcdev->irq, sh_mobile_ceu_irq, IRQF_DISABLED, | |
af128a10 | 1882 | dev_name(&pdev->dev), pcdev); |
0d3244d6 MD |
1883 | if (err) { |
1884 | dev_err(&pdev->dev, "Unable to register CEU interrupt.\n"); | |
1885 | goto exit_release_mem; | |
1886 | } | |
1887 | ||
6d1386c6 MD |
1888 | pm_suspend_ignore_children(&pdev->dev, true); |
1889 | pm_runtime_enable(&pdev->dev); | |
1890 | pm_runtime_resume(&pdev->dev); | |
a42b6dd6 | 1891 | |
0d3244d6 | 1892 | pcdev->ici.priv = pcdev; |
979ea1dd | 1893 | pcdev->ici.v4l2_dev.dev = &pdev->dev; |
0d3244d6 | 1894 | pcdev->ici.nr = pdev->id; |
af128a10 KS |
1895 | pcdev->ici.drv_name = dev_name(&pdev->dev); |
1896 | pcdev->ici.ops = &sh_mobile_ceu_host_ops; | |
0d3244d6 MD |
1897 | |
1898 | err = soc_camera_host_register(&pcdev->ici); | |
1899 | if (err) | |
055e05a0 | 1900 | goto exit_free_clk; |
0d3244d6 MD |
1901 | |
1902 | return 0; | |
1903 | ||
055e05a0 KM |
1904 | exit_free_clk: |
1905 | pm_runtime_disable(&pdev->dev); | |
0d3244d6 MD |
1906 | free_irq(pcdev->irq, pcdev); |
1907 | exit_release_mem: | |
1908 | if (platform_get_resource(pdev, IORESOURCE_MEM, 1)) | |
1909 | dma_release_declared_memory(&pdev->dev); | |
1910 | exit_iounmap: | |
1911 | iounmap(base); | |
1912 | exit_kfree: | |
1913 | kfree(pcdev); | |
1914 | exit: | |
1915 | return err; | |
1916 | } | |
1917 | ||
979ea1dd | 1918 | static int __devexit sh_mobile_ceu_remove(struct platform_device *pdev) |
0d3244d6 | 1919 | { |
eff505fa GL |
1920 | struct soc_camera_host *soc_host = to_soc_camera_host(&pdev->dev); |
1921 | struct sh_mobile_ceu_dev *pcdev = container_of(soc_host, | |
1922 | struct sh_mobile_ceu_dev, ici); | |
0d3244d6 | 1923 | |
eff505fa | 1924 | soc_camera_host_unregister(soc_host); |
055e05a0 | 1925 | pm_runtime_disable(&pdev->dev); |
0d3244d6 MD |
1926 | free_irq(pcdev->irq, pcdev); |
1927 | if (platform_get_resource(pdev, IORESOURCE_MEM, 1)) | |
1928 | dma_release_declared_memory(&pdev->dev); | |
1929 | iounmap(pcdev->base); | |
1930 | kfree(pcdev); | |
1931 | return 0; | |
1932 | } | |
1933 | ||
6d1386c6 MD |
1934 | static int sh_mobile_ceu_runtime_nop(struct device *dev) |
1935 | { | |
1936 | /* Runtime PM callback shared between ->runtime_suspend() | |
1937 | * and ->runtime_resume(). Simply returns success. | |
1938 | * | |
1939 | * This driver re-initializes all registers after | |
1940 | * pm_runtime_get_sync() anyway so there is no need | |
1941 | * to save and restore registers here. | |
1942 | */ | |
1943 | return 0; | |
1944 | } | |
1945 | ||
47145210 | 1946 | static const struct dev_pm_ops sh_mobile_ceu_dev_pm_ops = { |
6d1386c6 MD |
1947 | .runtime_suspend = sh_mobile_ceu_runtime_nop, |
1948 | .runtime_resume = sh_mobile_ceu_runtime_nop, | |
1949 | }; | |
1950 | ||
0d3244d6 MD |
1951 | static struct platform_driver sh_mobile_ceu_driver = { |
1952 | .driver = { | |
1953 | .name = "sh_mobile_ceu", | |
6d1386c6 | 1954 | .pm = &sh_mobile_ceu_dev_pm_ops, |
0d3244d6 MD |
1955 | }, |
1956 | .probe = sh_mobile_ceu_probe, | |
50e55fd1 | 1957 | .remove = __devexit_p(sh_mobile_ceu_remove), |
0d3244d6 MD |
1958 | }; |
1959 | ||
1960 | static int __init sh_mobile_ceu_init(void) | |
1961 | { | |
1962 | return platform_driver_register(&sh_mobile_ceu_driver); | |
1963 | } | |
1964 | ||
1965 | static void __exit sh_mobile_ceu_exit(void) | |
1966 | { | |
01c1e4ca | 1967 | platform_driver_unregister(&sh_mobile_ceu_driver); |
0d3244d6 MD |
1968 | } |
1969 | ||
1970 | module_init(sh_mobile_ceu_init); | |
1971 | module_exit(sh_mobile_ceu_exit); | |
1972 | ||
1973 | MODULE_DESCRIPTION("SuperH Mobile CEU driver"); | |
1974 | MODULE_AUTHOR("Magnus Damm"); | |
1975 | MODULE_LICENSE("GPL"); | |
40e2e092 | 1976 | MODULE_ALIAS("platform:sh_mobile_ceu"); |