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