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> | |
3dac322d | 20 | #include <linux/completion.h> |
0d3244d6 MD |
21 | #include <linux/delay.h> |
22 | #include <linux/dma-mapping.h> | |
23 | #include <linux/errno.h> | |
24 | #include <linux/fs.h> | |
25 | #include <linux/interrupt.h> | |
26 | #include <linux/kernel.h> | |
27 | #include <linux/mm.h> | |
28 | #include <linux/moduleparam.h> | |
29 | #include <linux/time.h> | |
5a0e3ad6 | 30 | #include <linux/slab.h> |
0d3244d6 MD |
31 | #include <linux/device.h> |
32 | #include <linux/platform_device.h> | |
0d3244d6 | 33 | #include <linux/videodev2.h> |
6d1386c6 | 34 | #include <linux/pm_runtime.h> |
f39c1ab3 | 35 | #include <linux/sched.h> |
0d3244d6 MD |
36 | |
37 | #include <media/v4l2-common.h> | |
38 | #include <media/v4l2-dev.h> | |
39 | #include <media/soc_camera.h> | |
40 | #include <media/sh_mobile_ceu.h> | |
6b526fed | 41 | #include <media/sh_mobile_csi2.h> |
a616898d | 42 | #include <media/videobuf2-dma-contig.h> |
760697be GL |
43 | #include <media/v4l2-mediabus.h> |
44 | #include <media/soc_mediabus.h> | |
0d3244d6 MD |
45 | |
46 | /* register offsets for sh7722 / sh7723 */ | |
47 | ||
dd54203b MD |
48 | #define CAPSR 0x00 /* Capture start register */ |
49 | #define CAPCR 0x04 /* Capture control register */ | |
50 | #define CAMCR 0x08 /* Capture interface control register */ | |
51 | #define CMCYR 0x0c /* Capture interface cycle register */ | |
52 | #define CAMOR 0x10 /* Capture interface offset register */ | |
53 | #define CAPWR 0x14 /* Capture interface width register */ | |
54 | #define CAIFR 0x18 /* Capture interface input format register */ | |
55 | #define CSTCR 0x20 /* Camera strobe control register (<= sh7722) */ | |
56 | #define CSECR 0x24 /* Camera strobe emission count register (<= sh7722) */ | |
57 | #define CRCNTR 0x28 /* CEU register control register */ | |
58 | #define CRCMPR 0x2c /* CEU register forcible control register */ | |
59 | #define CFLCR 0x30 /* Capture filter control register */ | |
60 | #define CFSZR 0x34 /* Capture filter size clip register */ | |
61 | #define CDWDR 0x38 /* Capture destination width register */ | |
62 | #define CDAYR 0x3c /* Capture data address Y register */ | |
63 | #define CDACR 0x40 /* Capture data address C register */ | |
64 | #define CDBYR 0x44 /* Capture data bottom-field address Y register */ | |
65 | #define CDBCR 0x48 /* Capture data bottom-field address C register */ | |
66 | #define CBDSR 0x4c /* Capture bundle destination size register */ | |
67 | #define CFWCR 0x5c /* Firewall operation control register */ | |
68 | #define CLFCR 0x60 /* Capture low-pass filter control register */ | |
69 | #define CDOCR 0x64 /* Capture data output control register */ | |
70 | #define CDDCR 0x68 /* Capture data complexity level register */ | |
71 | #define CDDAR 0x6c /* Capture data complexity level address register */ | |
72 | #define CEIER 0x70 /* Capture event interrupt enable register */ | |
73 | #define CETCR 0x74 /* Capture event flag clear register */ | |
74 | #define CSTSR 0x7c /* Capture status register */ | |
75 | #define CSRTR 0x80 /* Capture software reset register */ | |
76 | #define CDSSR 0x84 /* Capture data size register */ | |
77 | #define CDAYR2 0x90 /* Capture data address Y register 2 */ | |
78 | #define CDACR2 0x94 /* Capture data address C register 2 */ | |
79 | #define CDBYR2 0x98 /* Capture data bottom-field address Y register 2 */ | |
80 | #define CDBCR2 0x9c /* Capture data bottom-field address C register 2 */ | |
0d3244d6 | 81 | |
6a6c8786 GL |
82 | #undef DEBUG_GEOMETRY |
83 | #ifdef DEBUG_GEOMETRY | |
84 | #define dev_geo dev_info | |
85 | #else | |
86 | #define dev_geo dev_dbg | |
87 | #endif | |
88 | ||
0d3244d6 MD |
89 | /* per video frame buffer */ |
90 | struct sh_mobile_ceu_buffer { | |
a616898d GL |
91 | struct vb2_buffer vb; /* v4l buffer must be first */ |
92 | struct list_head queue; | |
760697be | 93 | enum v4l2_mbus_pixelcode code; |
0d3244d6 MD |
94 | }; |
95 | ||
96 | struct sh_mobile_ceu_dev { | |
0d3244d6 MD |
97 | struct soc_camera_host ici; |
98 | struct soc_camera_device *icd; | |
6b526fed | 99 | struct platform_device *csi2_pdev; |
0d3244d6 MD |
100 | |
101 | unsigned int irq; | |
102 | void __iomem *base; | |
103 | unsigned long video_limit; | |
104 | ||
a616898d | 105 | spinlock_t lock; /* Protects video buffer lists */ |
0d3244d6 | 106 | struct list_head capture; |
a616898d GL |
107 | struct vb2_buffer *active; |
108 | struct vb2_alloc_ctx *alloc_ctx; | |
0d3244d6 MD |
109 | |
110 | struct sh_mobile_ceu_info *pdata; | |
3dac322d | 111 | struct completion complete; |
8be65dc5 | 112 | |
961801bb GL |
113 | u32 cflcr; |
114 | ||
1edcc10d | 115 | enum v4l2_field field; |
a616898d | 116 | int sequence; |
1edcc10d | 117 | |
904078f1 GL |
118 | unsigned int image_mode:1; |
119 | unsigned int is_16bit:1; | |
3dac322d | 120 | unsigned int frozen:1; |
904078f1 GL |
121 | }; |
122 | ||
123 | struct sh_mobile_ceu_cam { | |
eec5ce01 | 124 | /* CEU offsets within the camera output, before the CEU scaler */ |
e622681d GL |
125 | unsigned int ceu_left; |
126 | unsigned int ceu_top; | |
127 | /* Client output, as seen by the CEU */ | |
128 | unsigned int width; | |
129 | unsigned int height; | |
130 | /* | |
131 | * User window from S_CROP / G_CROP, produced by client cropping and | |
132 | * scaling, CEU scaling and CEU cropping, mapped back onto the client | |
133 | * input window | |
134 | */ | |
135 | struct v4l2_rect subrect; | |
136 | /* Camera cropping rectangle */ | |
137 | struct v4l2_rect rect; | |
760697be GL |
138 | const struct soc_mbus_pixelfmt *extra_fmt; |
139 | enum v4l2_mbus_pixelcode code; | |
0d3244d6 MD |
140 | }; |
141 | ||
a616898d GL |
142 | static struct sh_mobile_ceu_buffer *to_ceu_vb(struct vb2_buffer *vb) |
143 | { | |
144 | return container_of(vb, struct sh_mobile_ceu_buffer, vb); | |
145 | } | |
146 | ||
0d3244d6 | 147 | static void ceu_write(struct sh_mobile_ceu_dev *priv, |
7a1a8164 | 148 | unsigned long reg_offs, u32 data) |
0d3244d6 MD |
149 | { |
150 | iowrite32(data, priv->base + reg_offs); | |
151 | } | |
152 | ||
7a1a8164 | 153 | static u32 ceu_read(struct sh_mobile_ceu_dev *priv, unsigned long reg_offs) |
0d3244d6 MD |
154 | { |
155 | return ioread32(priv->base + reg_offs); | |
156 | } | |
157 | ||
b1de7aeb KM |
158 | static int sh_mobile_ceu_soft_reset(struct sh_mobile_ceu_dev *pcdev) |
159 | { | |
160 | int i, success = 0; | |
161 | struct soc_camera_device *icd = pcdev->icd; | |
162 | ||
163 | ceu_write(pcdev, CAPSR, 1 << 16); /* reset */ | |
164 | ||
165 | /* wait CSTSR.CPTON bit */ | |
166 | for (i = 0; i < 1000; i++) { | |
167 | if (!(ceu_read(pcdev, CSTSR) & 1)) { | |
168 | success++; | |
169 | break; | |
170 | } | |
171 | udelay(1); | |
172 | } | |
173 | ||
174 | /* wait CAPSR.CPKIL bit */ | |
175 | for (i = 0; i < 1000; i++) { | |
176 | if (!(ceu_read(pcdev, CAPSR) & (1 << 16))) { | |
177 | success++; | |
178 | break; | |
179 | } | |
180 | udelay(1); | |
181 | } | |
182 | ||
183 | ||
184 | if (2 != success) { | |
7dfff953 | 185 | dev_warn(icd->pdev, "soft reset time out\n"); |
b1de7aeb KM |
186 | return -EIO; |
187 | } | |
188 | ||
189 | return 0; | |
190 | } | |
191 | ||
0d3244d6 MD |
192 | /* |
193 | * Videobuf operations | |
194 | */ | |
a616898d GL |
195 | static int sh_mobile_ceu_videobuf_setup(struct vb2_queue *vq, |
196 | unsigned int *count, unsigned int *num_planes, | |
035aa147 | 197 | unsigned int sizes[], void *alloc_ctxs[]) |
0d3244d6 | 198 | { |
a616898d | 199 | struct soc_camera_device *icd = container_of(vq, struct soc_camera_device, vb2_vidq); |
7dfff953 | 200 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
0d3244d6 | 201 | struct sh_mobile_ceu_dev *pcdev = ici->priv; |
760697be GL |
202 | int bytes_per_line = soc_mbus_bytes_per_line(icd->user_width, |
203 | icd->current_fmt->host_fmt); | |
0d3244d6 | 204 | |
760697be GL |
205 | if (bytes_per_line < 0) |
206 | return bytes_per_line; | |
207 | ||
a616898d GL |
208 | *num_planes = 1; |
209 | ||
210 | pcdev->sequence = 0; | |
211 | sizes[0] = bytes_per_line * icd->user_height; | |
212 | alloc_ctxs[0] = pcdev->alloc_ctx; | |
0d3244d6 | 213 | |
a616898d | 214 | if (!*count) |
0d3244d6 MD |
215 | *count = 2; |
216 | ||
217 | if (pcdev->video_limit) { | |
a616898d GL |
218 | if (PAGE_ALIGN(sizes[0]) * *count > pcdev->video_limit) |
219 | *count = pcdev->video_limit / PAGE_ALIGN(sizes[0]); | |
0d3244d6 MD |
220 | } |
221 | ||
035aa147 | 222 | dev_dbg(icd->parent, "count=%d, size=%u\n", *count, sizes[0]); |
0d3244d6 MD |
223 | |
224 | return 0; | |
225 | } | |
226 | ||
7a1a8164 MD |
227 | #define CEU_CETCR_MAGIC 0x0317f313 /* acknowledge magical interrupt sources */ |
228 | #define CEU_CETCR_IGRW (1 << 4) /* prohibited register access interrupt bit */ | |
229 | #define CEU_CEIER_CPEIE (1 << 0) /* one-frame capture end interrupt */ | |
5cf93f1d | 230 | #define CEU_CEIER_VBP (1 << 20) /* vbp error */ |
7a1a8164 | 231 | #define CEU_CAPCR_CTNCP (1 << 16) /* continuous capture mode (if set) */ |
5cf93f1d | 232 | #define CEU_CEIER_MASK (CEU_CEIER_CPEIE | CEU_CEIER_VBP) |
7a1a8164 MD |
233 | |
234 | ||
5cf93f1d KM |
235 | /* |
236 | * return value doesn't reflex the success/failure to queue the new buffer, | |
237 | * but rather the status of the previous buffer. | |
238 | */ | |
239 | static int sh_mobile_ceu_capture(struct sh_mobile_ceu_dev *pcdev) | |
0d3244d6 | 240 | { |
8be65dc5 | 241 | struct soc_camera_device *icd = pcdev->icd; |
ccab8a29 | 242 | dma_addr_t phys_addr_top, phys_addr_bottom; |
1edcc10d KM |
243 | unsigned long top1, top2; |
244 | unsigned long bottom1, bottom2; | |
5cf93f1d | 245 | u32 status; |
15f517e2 | 246 | bool planar; |
5cf93f1d | 247 | int ret = 0; |
7a1a8164 | 248 | |
5d28d525 GL |
249 | /* |
250 | * The hardware is _very_ picky about this sequence. Especially | |
7a1a8164 MD |
251 | * the CEU_CETCR_MAGIC value. It seems like we need to acknowledge |
252 | * several not-so-well documented interrupt sources in CETCR. | |
253 | */ | |
5cf93f1d KM |
254 | ceu_write(pcdev, CEIER, ceu_read(pcdev, CEIER) & ~CEU_CEIER_MASK); |
255 | status = ceu_read(pcdev, CETCR); | |
256 | ceu_write(pcdev, CETCR, ~status & CEU_CETCR_MAGIC); | |
3dac322d GL |
257 | if (!pcdev->frozen) |
258 | ceu_write(pcdev, CEIER, ceu_read(pcdev, CEIER) | CEU_CEIER_MASK); | |
7a1a8164 MD |
259 | ceu_write(pcdev, CAPCR, ceu_read(pcdev, CAPCR) & ~CEU_CAPCR_CTNCP); |
260 | ceu_write(pcdev, CETCR, CEU_CETCR_MAGIC ^ CEU_CETCR_IGRW); | |
0d3244d6 | 261 | |
5cf93f1d KM |
262 | /* |
263 | * When a VBP interrupt occurs, a capture end interrupt does not occur | |
264 | * and the image of that frame is not captured correctly. So, soft reset | |
265 | * is needed here. | |
266 | */ | |
267 | if (status & CEU_CEIER_VBP) { | |
268 | sh_mobile_ceu_soft_reset(pcdev); | |
269 | ret = -EIO; | |
270 | } | |
271 | ||
3dac322d GL |
272 | if (pcdev->frozen) { |
273 | complete(&pcdev->complete); | |
274 | return ret; | |
275 | } | |
276 | ||
8be65dc5 | 277 | if (!pcdev->active) |
5cf93f1d | 278 | return ret; |
8be65dc5 | 279 | |
1edcc10d KM |
280 | if (V4L2_FIELD_INTERLACED_BT == pcdev->field) { |
281 | top1 = CDBYR; | |
282 | top2 = CDBCR; | |
283 | bottom1 = CDAYR; | |
284 | bottom2 = CDACR; | |
285 | } else { | |
286 | top1 = CDAYR; | |
287 | top2 = CDACR; | |
288 | bottom1 = CDBYR; | |
289 | bottom2 = CDBCR; | |
290 | } | |
291 | ||
ba7fcb0c | 292 | phys_addr_top = vb2_dma_contig_plane_dma_addr(pcdev->active, 0); |
a616898d | 293 | |
760697be | 294 | switch (icd->current_fmt->host_fmt->fourcc) { |
8be65dc5 MD |
295 | case V4L2_PIX_FMT_NV12: |
296 | case V4L2_PIX_FMT_NV21: | |
9e4a56d2 MD |
297 | case V4L2_PIX_FMT_NV16: |
298 | case V4L2_PIX_FMT_NV61: | |
15f517e2 GL |
299 | planar = true; |
300 | break; | |
301 | default: | |
302 | planar = false; | |
303 | } | |
304 | ||
305 | ceu_write(pcdev, top1, phys_addr_top); | |
306 | if (V4L2_FIELD_NONE != pcdev->field) { | |
307 | if (planar) | |
308 | phys_addr_bottom = phys_addr_top + icd->user_width; | |
309 | else | |
310 | phys_addr_bottom = phys_addr_top + | |
311 | soc_mbus_bytes_per_line(icd->user_width, | |
312 | icd->current_fmt->host_fmt); | |
313 | ceu_write(pcdev, bottom1, phys_addr_bottom); | |
314 | } | |
315 | ||
316 | if (planar) { | |
6a6c8786 GL |
317 | phys_addr_top += icd->user_width * |
318 | icd->user_height; | |
1edcc10d KM |
319 | ceu_write(pcdev, top2, phys_addr_top); |
320 | if (V4L2_FIELD_NONE != pcdev->field) { | |
321 | phys_addr_bottom = phys_addr_top + icd->user_width; | |
322 | ceu_write(pcdev, bottom2, phys_addr_bottom); | |
ccab8a29 | 323 | } |
0d3244d6 | 324 | } |
8be65dc5 | 325 | |
8be65dc5 | 326 | ceu_write(pcdev, CAPSR, 0x1); /* start capture */ |
5cf93f1d KM |
327 | |
328 | return ret; | |
0d3244d6 MD |
329 | } |
330 | ||
a616898d | 331 | static int sh_mobile_ceu_videobuf_prepare(struct vb2_buffer *vb) |
0d3244d6 | 332 | { |
a616898d | 333 | struct soc_camera_device *icd = container_of(vb->vb2_queue, struct soc_camera_device, vb2_vidq); |
0d3244d6 | 334 | struct sh_mobile_ceu_buffer *buf; |
760697be GL |
335 | int bytes_per_line = soc_mbus_bytes_per_line(icd->user_width, |
336 | icd->current_fmt->host_fmt); | |
a616898d | 337 | unsigned long size; |
0d3244d6 | 338 | |
760697be GL |
339 | if (bytes_per_line < 0) |
340 | return bytes_per_line; | |
341 | ||
a616898d | 342 | buf = to_ceu_vb(vb); |
0d3244d6 | 343 | |
7dfff953 | 344 | dev_dbg(icd->parent, "%s (vb=0x%p) 0x%p %lu\n", __func__, |
a616898d | 345 | vb, vb2_plane_vaddr(vb, 0), vb2_get_plane_payload(vb, 0)); |
0d3244d6 MD |
346 | |
347 | /* Added list head initialization on alloc */ | |
a616898d | 348 | WARN(!list_empty(&buf->queue), "Buffer %p on queue!\n", vb); |
0d3244d6 MD |
349 | |
350 | #ifdef DEBUG | |
5d28d525 GL |
351 | /* |
352 | * This can be useful if you want to see if we actually fill | |
353 | * the buffer with something | |
354 | */ | |
a616898d GL |
355 | if (vb2_plane_vaddr(vb, 0)) |
356 | memset(vb2_plane_vaddr(vb, 0), 0xaa, vb2_get_plane_payload(vb, 0)); | |
0d3244d6 MD |
357 | #endif |
358 | ||
359 | BUG_ON(NULL == icd->current_fmt); | |
360 | ||
a616898d | 361 | size = icd->user_height * bytes_per_line; |
0d3244d6 | 362 | |
a616898d | 363 | if (vb2_plane_size(vb, 0) < size) { |
7dfff953 | 364 | dev_err(icd->parent, "Buffer too small (%lu < %lu)\n", |
a616898d GL |
365 | vb2_plane_size(vb, 0), size); |
366 | return -ENOBUFS; | |
0d3244d6 MD |
367 | } |
368 | ||
a616898d | 369 | vb2_set_plane_payload(vb, 0, size); |
0d3244d6 MD |
370 | |
371 | return 0; | |
0d3244d6 MD |
372 | } |
373 | ||
a616898d | 374 | static void sh_mobile_ceu_videobuf_queue(struct vb2_buffer *vb) |
0d3244d6 | 375 | { |
a616898d | 376 | struct soc_camera_device *icd = container_of(vb->vb2_queue, struct soc_camera_device, vb2_vidq); |
7dfff953 | 377 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
0d3244d6 | 378 | struct sh_mobile_ceu_dev *pcdev = ici->priv; |
a616898d | 379 | struct sh_mobile_ceu_buffer *buf = to_ceu_vb(vb); |
0d3244d6 | 380 | |
7dfff953 | 381 | dev_dbg(icd->parent, "%s (vb=0x%p) 0x%p %lu\n", __func__, |
a616898d | 382 | vb, vb2_plane_vaddr(vb, 0), vb2_get_plane_payload(vb, 0)); |
0d3244d6 | 383 | |
3dac322d | 384 | spin_lock_irq(&pcdev->lock); |
a616898d | 385 | list_add_tail(&buf->queue, &pcdev->capture); |
0d3244d6 MD |
386 | |
387 | if (!pcdev->active) { | |
5cf93f1d KM |
388 | /* |
389 | * Because there were no active buffer at this moment, | |
390 | * we are not interested in the return value of | |
391 | * sh_mobile_ceu_capture here. | |
392 | */ | |
0d3244d6 MD |
393 | pcdev->active = vb; |
394 | sh_mobile_ceu_capture(pcdev); | |
395 | } | |
3dac322d | 396 | spin_unlock_irq(&pcdev->lock); |
0d3244d6 MD |
397 | } |
398 | ||
a616898d | 399 | static void sh_mobile_ceu_videobuf_release(struct vb2_buffer *vb) |
0d3244d6 | 400 | { |
a616898d | 401 | struct soc_camera_device *icd = container_of(vb->vb2_queue, struct soc_camera_device, vb2_vidq); |
7dfff953 | 402 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
a616898d | 403 | struct sh_mobile_ceu_buffer *buf = to_ceu_vb(vb); |
cca0e549 | 404 | struct sh_mobile_ceu_dev *pcdev = ici->priv; |
cca0e549 | 405 | |
3dac322d | 406 | spin_lock_irq(&pcdev->lock); |
cca0e549 GL |
407 | |
408 | if (pcdev->active == vb) { | |
409 | /* disable capture (release DMA buffer), reset */ | |
410 | ceu_write(pcdev, CAPSR, 1 << 16); | |
411 | pcdev->active = NULL; | |
412 | } | |
413 | ||
cb74cf53 GL |
414 | /* |
415 | * Doesn't hurt also if the list is empty, but it hurts, if queuing the | |
416 | * buffer failed, and .buf_init() hasn't been called | |
417 | */ | |
418 | if (buf->queue.next) | |
419 | list_del_init(&buf->queue); | |
cca0e549 | 420 | |
3dac322d | 421 | spin_unlock_irq(&pcdev->lock); |
a616898d | 422 | } |
cca0e549 | 423 | |
a616898d GL |
424 | static int sh_mobile_ceu_videobuf_init(struct vb2_buffer *vb) |
425 | { | |
426 | /* This is for locking debugging only */ | |
427 | INIT_LIST_HEAD(&to_ceu_vb(vb)->queue); | |
428 | return 0; | |
0d3244d6 MD |
429 | } |
430 | ||
066f7867 GL |
431 | static int sh_mobile_ceu_stop_streaming(struct vb2_queue *q) |
432 | { | |
433 | struct soc_camera_device *icd = container_of(q, struct soc_camera_device, vb2_vidq); | |
7dfff953 | 434 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
066f7867 GL |
435 | struct sh_mobile_ceu_dev *pcdev = ici->priv; |
436 | struct list_head *buf_head, *tmp; | |
066f7867 | 437 | |
3dac322d | 438 | spin_lock_irq(&pcdev->lock); |
066f7867 GL |
439 | |
440 | pcdev->active = NULL; | |
441 | ||
442 | list_for_each_safe(buf_head, tmp, &pcdev->capture) | |
443 | list_del_init(buf_head); | |
444 | ||
3dac322d | 445 | spin_unlock_irq(&pcdev->lock); |
066f7867 GL |
446 | |
447 | return sh_mobile_ceu_soft_reset(pcdev); | |
448 | } | |
449 | ||
a616898d GL |
450 | static struct vb2_ops sh_mobile_ceu_videobuf_ops = { |
451 | .queue_setup = sh_mobile_ceu_videobuf_setup, | |
452 | .buf_prepare = sh_mobile_ceu_videobuf_prepare, | |
453 | .buf_queue = sh_mobile_ceu_videobuf_queue, | |
454 | .buf_cleanup = sh_mobile_ceu_videobuf_release, | |
455 | .buf_init = sh_mobile_ceu_videobuf_init, | |
456 | .wait_prepare = soc_camera_unlock, | |
457 | .wait_finish = soc_camera_lock, | |
066f7867 | 458 | .stop_streaming = sh_mobile_ceu_stop_streaming, |
0d3244d6 MD |
459 | }; |
460 | ||
461 | static irqreturn_t sh_mobile_ceu_irq(int irq, void *data) | |
462 | { | |
463 | struct sh_mobile_ceu_dev *pcdev = data; | |
a616898d GL |
464 | struct vb2_buffer *vb; |
465 | int ret; | |
0d3244d6 | 466 | |
a616898d | 467 | spin_lock(&pcdev->lock); |
0d3244d6 MD |
468 | |
469 | vb = pcdev->active; | |
cca0e549 GL |
470 | if (!vb) |
471 | /* Stale interrupt from a released buffer */ | |
472 | goto out; | |
473 | ||
a616898d | 474 | list_del_init(&to_ceu_vb(vb)->queue); |
0d3244d6 MD |
475 | |
476 | if (!list_empty(&pcdev->capture)) | |
a616898d GL |
477 | pcdev->active = &list_entry(pcdev->capture.next, |
478 | struct sh_mobile_ceu_buffer, queue)->vb; | |
0d3244d6 MD |
479 | else |
480 | pcdev->active = NULL; | |
481 | ||
a616898d GL |
482 | ret = sh_mobile_ceu_capture(pcdev); |
483 | do_gettimeofday(&vb->v4l2_buf.timestamp); | |
484 | if (!ret) { | |
485 | vb->v4l2_buf.field = pcdev->field; | |
486 | vb->v4l2_buf.sequence = pcdev->sequence++; | |
487 | } | |
488 | vb2_buffer_done(vb, ret < 0 ? VB2_BUF_STATE_ERROR : VB2_BUF_STATE_DONE); | |
cca0e549 GL |
489 | |
490 | out: | |
a616898d | 491 | spin_unlock(&pcdev->lock); |
0d3244d6 MD |
492 | |
493 | return IRQ_HANDLED; | |
494 | } | |
495 | ||
6b526fed GL |
496 | static struct v4l2_subdev *find_csi2(struct sh_mobile_ceu_dev *pcdev) |
497 | { | |
498 | struct v4l2_subdev *sd; | |
499 | ||
500 | if (!pcdev->csi2_pdev) | |
501 | return NULL; | |
502 | ||
503 | v4l2_device_for_each_subdev(sd, &pcdev->ici.v4l2_dev) | |
504 | if (&pcdev->csi2_pdev->dev == v4l2_get_subdevdata(sd)) | |
505 | return sd; | |
506 | ||
507 | return NULL; | |
508 | } | |
509 | ||
1c3bb743 | 510 | /* Called with .video_lock held */ |
0d3244d6 MD |
511 | static int sh_mobile_ceu_add_device(struct soc_camera_device *icd) |
512 | { | |
7dfff953 | 513 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
0d3244d6 | 514 | struct sh_mobile_ceu_dev *pcdev = ici->priv; |
6b526fed | 515 | struct v4l2_subdev *csi2_sd; |
6ed7c038 | 516 | int ret; |
0d3244d6 | 517 | |
0d3244d6 | 518 | if (pcdev->icd) |
979ea1dd | 519 | return -EBUSY; |
0d3244d6 | 520 | |
7dfff953 | 521 | dev_info(icd->parent, |
0d3244d6 MD |
522 | "SuperH Mobile CEU driver attached to camera %d\n", |
523 | icd->devnum); | |
524 | ||
a79aebfc | 525 | pm_runtime_get_sync(ici->v4l2_dev.dev); |
40e2e092 | 526 | |
6ed7c038 | 527 | ret = sh_mobile_ceu_soft_reset(pcdev); |
6b526fed GL |
528 | |
529 | csi2_sd = find_csi2(pcdev); | |
530 | ||
531 | ret = v4l2_subdev_call(csi2_sd, core, s_power, 1); | |
532 | if (ret != -ENODEV && ret != -ENOIOCTLCMD && ret < 0) { | |
533 | pm_runtime_put_sync(ici->v4l2_dev.dev); | |
534 | } else { | |
6ed7c038 | 535 | pcdev->icd = icd; |
6b526fed GL |
536 | ret = 0; |
537 | } | |
979ea1dd | 538 | |
6ed7c038 | 539 | return ret; |
0d3244d6 MD |
540 | } |
541 | ||
1c3bb743 | 542 | /* Called with .video_lock held */ |
0d3244d6 MD |
543 | static void sh_mobile_ceu_remove_device(struct soc_camera_device *icd) |
544 | { | |
7dfff953 | 545 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
0d3244d6 | 546 | struct sh_mobile_ceu_dev *pcdev = ici->priv; |
6b526fed | 547 | struct v4l2_subdev *csi2_sd = find_csi2(pcdev); |
0d3244d6 MD |
548 | |
549 | BUG_ON(icd != pcdev->icd); | |
550 | ||
6b526fed | 551 | v4l2_subdev_call(csi2_sd, core, s_power, 0); |
0d3244d6 MD |
552 | /* disable capture, disable interrupts */ |
553 | ceu_write(pcdev, CEIER, 0); | |
b1de7aeb | 554 | sh_mobile_ceu_soft_reset(pcdev); |
51354cc3 MD |
555 | |
556 | /* make sure active buffer is canceled */ | |
3dac322d | 557 | spin_lock_irq(&pcdev->lock); |
51354cc3 | 558 | if (pcdev->active) { |
a616898d GL |
559 | list_del_init(&to_ceu_vb(pcdev->active)->queue); |
560 | vb2_buffer_done(pcdev->active, VB2_BUF_STATE_ERROR); | |
51354cc3 MD |
561 | pcdev->active = NULL; |
562 | } | |
3dac322d | 563 | spin_unlock_irq(&pcdev->lock); |
51354cc3 | 564 | |
a79aebfc | 565 | pm_runtime_put_sync(ici->v4l2_dev.dev); |
40e2e092 | 566 | |
7dfff953 | 567 | dev_info(icd->parent, |
0d3244d6 MD |
568 | "SuperH Mobile CEU driver detached from camera %d\n", |
569 | icd->devnum); | |
570 | ||
571 | pcdev->icd = NULL; | |
572 | } | |
573 | ||
961801bb GL |
574 | /* |
575 | * See chapter 29.4.12 "Capture Filter Control Register (CFLCR)" | |
576 | * in SH7722 Hardware Manual | |
577 | */ | |
578 | static unsigned int size_dst(unsigned int src, unsigned int scale) | |
579 | { | |
580 | unsigned int mant_pre = scale >> 12; | |
581 | if (!src || !scale) | |
582 | return src; | |
583 | return ((mant_pre + 2 * (src - 1)) / (2 * mant_pre) - 1) * | |
584 | mant_pre * 4096 / scale + 1; | |
585 | } | |
586 | ||
961801bb GL |
587 | static u16 calc_scale(unsigned int src, unsigned int *dst) |
588 | { | |
589 | u16 scale; | |
590 | ||
591 | if (src == *dst) | |
592 | return 0; | |
593 | ||
594 | scale = (src * 4096 / *dst) & ~7; | |
595 | ||
596 | while (scale > 4096 && size_dst(src, scale) < *dst) | |
597 | scale -= 8; | |
598 | ||
599 | *dst = size_dst(src, scale); | |
600 | ||
601 | return scale; | |
602 | } | |
603 | ||
604 | /* rect is guaranteed to not exceed the scaled camera rectangle */ | |
e622681d | 605 | static void sh_mobile_ceu_set_rect(struct soc_camera_device *icd) |
904078f1 | 606 | { |
7dfff953 | 607 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
904078f1 GL |
608 | struct sh_mobile_ceu_cam *cam = icd->host_priv; |
609 | struct sh_mobile_ceu_dev *pcdev = ici->priv; | |
6a6c8786 GL |
610 | unsigned int height, width, cdwdr_width, in_width, in_height; |
611 | unsigned int left_offset, top_offset; | |
904078f1 GL |
612 | u32 camor; |
613 | ||
7dfff953 | 614 | dev_geo(icd->parent, "Crop %ux%u@%u:%u\n", |
e622681d | 615 | icd->user_width, icd->user_height, cam->ceu_left, cam->ceu_top); |
904078f1 | 616 | |
e622681d GL |
617 | left_offset = cam->ceu_left; |
618 | top_offset = cam->ceu_top; | |
904078f1 | 619 | |
eec5ce01 GL |
620 | WARN_ON(icd->user_width & 3 || icd->user_height & 3); |
621 | ||
622 | width = icd->user_width; | |
623 | ||
904078f1 | 624 | if (pcdev->image_mode) { |
e622681d | 625 | in_width = cam->width; |
961801bb | 626 | if (!pcdev->is_16bit) { |
961801bb GL |
627 | in_width *= 2; |
628 | left_offset *= 2; | |
629 | } | |
eec5ce01 | 630 | cdwdr_width = width; |
904078f1 | 631 | } else { |
eec5ce01 | 632 | int bytes_per_line = soc_mbus_bytes_per_line(width, |
760697be GL |
633 | icd->current_fmt->host_fmt); |
634 | unsigned int w_factor; | |
6a6c8786 | 635 | |
760697be GL |
636 | switch (icd->current_fmt->host_fmt->packing) { |
637 | case SOC_MBUS_PACKING_2X8_PADHI: | |
638 | w_factor = 2; | |
639 | break; | |
640 | default: | |
641 | w_factor = 1; | |
642 | } | |
961801bb | 643 | |
e622681d | 644 | in_width = cam->width * w_factor; |
eec5ce01 | 645 | left_offset *= w_factor; |
961801bb | 646 | |
760697be | 647 | if (bytes_per_line < 0) |
eec5ce01 | 648 | cdwdr_width = width; |
760697be GL |
649 | else |
650 | cdwdr_width = bytes_per_line; | |
904078f1 GL |
651 | } |
652 | ||
e622681d GL |
653 | height = icd->user_height; |
654 | in_height = cam->height; | |
1edcc10d | 655 | if (V4L2_FIELD_NONE != pcdev->field) { |
eec5ce01 | 656 | height = (height / 2) & ~3; |
961801bb GL |
657 | in_height /= 2; |
658 | top_offset /= 2; | |
904078f1 GL |
659 | cdwdr_width *= 2; |
660 | } | |
661 | ||
b3b5020d | 662 | /* CSI2 special configuration */ |
6b526fed | 663 | if (pcdev->pdata->csi2) { |
b3b5020d GL |
664 | in_width = ((in_width - 2) * 2); |
665 | left_offset *= 2; | |
666 | } | |
667 | ||
6a6c8786 | 668 | /* Set CAMOR, CAPWR, CFSZR, take care of CDWDR */ |
904078f1 | 669 | camor = left_offset | (top_offset << 16); |
6a6c8786 | 670 | |
7dfff953 | 671 | dev_geo(icd->parent, |
6a6c8786 GL |
672 | "CAMOR 0x%x, CAPWR 0x%x, CFSZR 0x%x, CDWDR 0x%x\n", camor, |
673 | (in_height << 16) | in_width, (height << 16) | width, | |
674 | cdwdr_width); | |
675 | ||
904078f1 | 676 | ceu_write(pcdev, CAMOR, camor); |
961801bb | 677 | ceu_write(pcdev, CAPWR, (in_height << 16) | in_width); |
eec5ce01 | 678 | /* CFSZR clipping is applied _after_ the scaling filter (CFLCR) */ |
6a6c8786 | 679 | ceu_write(pcdev, CFSZR, (height << 16) | width); |
904078f1 GL |
680 | ceu_write(pcdev, CDWDR, cdwdr_width); |
681 | } | |
682 | ||
683 | static u32 capture_save_reset(struct sh_mobile_ceu_dev *pcdev) | |
684 | { | |
685 | u32 capsr = ceu_read(pcdev, CAPSR); | |
686 | ceu_write(pcdev, CAPSR, 1 << 16); /* reset, stop capture */ | |
687 | return capsr; | |
688 | } | |
689 | ||
690 | static void capture_restore(struct sh_mobile_ceu_dev *pcdev, u32 capsr) | |
691 | { | |
692 | unsigned long timeout = jiffies + 10 * HZ; | |
693 | ||
694 | /* | |
695 | * Wait until the end of the current frame. It can take a long time, | |
696 | * but if it has been aborted by a CAPSR reset, it shoule exit sooner. | |
697 | */ | |
698 | while ((ceu_read(pcdev, CSTSR) & 1) && time_before(jiffies, timeout)) | |
699 | msleep(1); | |
700 | ||
701 | if (time_after(jiffies, timeout)) { | |
702 | dev_err(pcdev->ici.v4l2_dev.dev, | |
703 | "Timeout waiting for frame end! Interface problem?\n"); | |
704 | return; | |
705 | } | |
706 | ||
707 | /* Wait until reset clears, this shall not hang... */ | |
708 | while (ceu_read(pcdev, CAPSR) & (1 << 16)) | |
709 | udelay(10); | |
710 | ||
711 | /* Anything to restore? */ | |
712 | if (capsr & ~(1 << 16)) | |
713 | ceu_write(pcdev, CAPSR, capsr); | |
714 | } | |
715 | ||
e1db7043 GL |
716 | /* Find the bus subdevice driver, e.g., CSI2 */ |
717 | static struct v4l2_subdev *find_bus_subdev(struct sh_mobile_ceu_dev *pcdev, | |
718 | struct soc_camera_device *icd) | |
719 | { | |
720 | if (!pcdev->csi2_pdev) | |
721 | return soc_camera_to_subdev(icd); | |
722 | ||
723 | return find_csi2(pcdev); | |
724 | } | |
725 | ||
726 | #define CEU_BUS_FLAGS (V4L2_MBUS_MASTER | \ | |
727 | V4L2_MBUS_PCLK_SAMPLE_RISING | \ | |
728 | V4L2_MBUS_HSYNC_ACTIVE_HIGH | \ | |
729 | V4L2_MBUS_HSYNC_ACTIVE_LOW | \ | |
730 | V4L2_MBUS_VSYNC_ACTIVE_HIGH | \ | |
731 | V4L2_MBUS_VSYNC_ACTIVE_LOW | \ | |
732 | V4L2_MBUS_DATA_ACTIVE_HIGH) | |
733 | ||
a616898d | 734 | /* Capture is not running, no interrupts, no locking needed */ |
0d3244d6 MD |
735 | static int sh_mobile_ceu_set_bus_param(struct soc_camera_device *icd, |
736 | __u32 pixfmt) | |
737 | { | |
7dfff953 | 738 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
0d3244d6 | 739 | struct sh_mobile_ceu_dev *pcdev = ici->priv; |
e1db7043 | 740 | struct v4l2_subdev *sd = find_bus_subdev(pcdev, icd); |
904078f1 | 741 | struct sh_mobile_ceu_cam *cam = icd->host_priv; |
e1db7043 GL |
742 | struct v4l2_mbus_config cfg = {.type = V4L2_MBUS_PARALLEL,}; |
743 | unsigned long value, common_flags = CEU_BUS_FLAGS; | |
904078f1 | 744 | u32 capsr = capture_save_reset(pcdev); |
e1db7043 GL |
745 | unsigned int yuv_lineskip; |
746 | int ret; | |
0d3244d6 | 747 | |
e1db7043 GL |
748 | /* |
749 | * If the client doesn't implement g_mbus_config, we just use our | |
750 | * platform data | |
751 | */ | |
752 | ret = v4l2_subdev_call(sd, video, g_mbus_config, &cfg); | |
753 | if (!ret) { | |
754 | common_flags = soc_mbus_config_compatible(&cfg, | |
755 | common_flags); | |
756 | if (!common_flags) | |
757 | return -EINVAL; | |
758 | } else if (ret != -ENOIOCTLCMD) { | |
759 | return ret; | |
760 | } | |
0d3244d6 | 761 | |
85dc1cff | 762 | /* Make choises, based on platform preferences */ |
e1db7043 GL |
763 | if ((common_flags & V4L2_MBUS_HSYNC_ACTIVE_HIGH) && |
764 | (common_flags & V4L2_MBUS_HSYNC_ACTIVE_LOW)) { | |
85dc1cff | 765 | if (pcdev->pdata->flags & SH_CEU_FLAG_HSYNC_LOW) |
e1db7043 | 766 | common_flags &= ~V4L2_MBUS_HSYNC_ACTIVE_HIGH; |
85dc1cff | 767 | else |
e1db7043 | 768 | common_flags &= ~V4L2_MBUS_HSYNC_ACTIVE_LOW; |
85dc1cff KM |
769 | } |
770 | ||
e1db7043 GL |
771 | if ((common_flags & V4L2_MBUS_VSYNC_ACTIVE_HIGH) && |
772 | (common_flags & V4L2_MBUS_VSYNC_ACTIVE_LOW)) { | |
85dc1cff | 773 | if (pcdev->pdata->flags & SH_CEU_FLAG_VSYNC_LOW) |
e1db7043 | 774 | common_flags &= ~V4L2_MBUS_VSYNC_ACTIVE_HIGH; |
85dc1cff | 775 | else |
e1db7043 | 776 | common_flags &= ~V4L2_MBUS_VSYNC_ACTIVE_LOW; |
85dc1cff KM |
777 | } |
778 | ||
e1db7043 GL |
779 | cfg.flags = common_flags; |
780 | ret = v4l2_subdev_call(sd, video, s_mbus_config, &cfg); | |
781 | if (ret < 0 && ret != -ENOIOCTLCMD) | |
0d3244d6 MD |
782 | return ret; |
783 | ||
e1db7043 | 784 | if (icd->current_fmt->host_fmt->bits_per_sample > 8) |
904078f1 | 785 | pcdev->is_16bit = 1; |
e1db7043 GL |
786 | else |
787 | pcdev->is_16bit = 0; | |
0d3244d6 MD |
788 | |
789 | ceu_write(pcdev, CRCNTR, 0); | |
790 | ceu_write(pcdev, CRCMPR, 0); | |
791 | ||
8be65dc5 | 792 | value = 0x00000010; /* data fetch by default */ |
e1db7043 | 793 | yuv_lineskip = 0x10; |
8be65dc5 | 794 | |
760697be | 795 | switch (icd->current_fmt->host_fmt->fourcc) { |
8be65dc5 MD |
796 | case V4L2_PIX_FMT_NV12: |
797 | case V4L2_PIX_FMT_NV21: | |
e1db7043 GL |
798 | /* convert 4:2:2 -> 4:2:0 */ |
799 | yuv_lineskip = 0; /* skip for NV12/21, no skip for NV16/61 */ | |
9e4a56d2 MD |
800 | /* fall-through */ |
801 | case V4L2_PIX_FMT_NV16: | |
802 | case V4L2_PIX_FMT_NV61: | |
760697be | 803 | switch (cam->code) { |
ace6e979 | 804 | case V4L2_MBUS_FMT_UYVY8_2X8: |
8be65dc5 MD |
805 | value = 0x00000000; /* Cb0, Y0, Cr0, Y1 */ |
806 | break; | |
ace6e979 | 807 | case V4L2_MBUS_FMT_VYUY8_2X8: |
8be65dc5 MD |
808 | value = 0x00000100; /* Cr0, Y0, Cb0, Y1 */ |
809 | break; | |
ace6e979 | 810 | case V4L2_MBUS_FMT_YUYV8_2X8: |
8be65dc5 MD |
811 | value = 0x00000200; /* Y0, Cb0, Y1, Cr0 */ |
812 | break; | |
ace6e979 | 813 | case V4L2_MBUS_FMT_YVYU8_2X8: |
8be65dc5 MD |
814 | value = 0x00000300; /* Y0, Cr0, Y1, Cb0 */ |
815 | break; | |
816 | default: | |
817 | BUG(); | |
818 | } | |
819 | } | |
820 | ||
760697be GL |
821 | if (icd->current_fmt->host_fmt->fourcc == V4L2_PIX_FMT_NV21 || |
822 | icd->current_fmt->host_fmt->fourcc == V4L2_PIX_FMT_NV61) | |
9e4a56d2 | 823 | value ^= 0x00000100; /* swap U, V to change from NV1x->NVx1 */ |
8be65dc5 | 824 | |
e1db7043 GL |
825 | value |= common_flags & V4L2_MBUS_VSYNC_ACTIVE_LOW ? 1 << 1 : 0; |
826 | value |= common_flags & V4L2_MBUS_HSYNC_ACTIVE_LOW ? 1 << 0 : 0; | |
904078f1 | 827 | value |= pcdev->is_16bit ? 1 << 12 : 0; |
b3b5020d GL |
828 | |
829 | /* CSI2 mode */ | |
6b526fed | 830 | if (pcdev->pdata->csi2) |
b3b5020d GL |
831 | value |= 3 << 12; |
832 | ||
0d3244d6 MD |
833 | ceu_write(pcdev, CAMCR, value); |
834 | ||
835 | ceu_write(pcdev, CAPCR, 0x00300000); | |
1edcc10d KM |
836 | |
837 | switch (pcdev->field) { | |
838 | case V4L2_FIELD_INTERLACED_TB: | |
839 | value = 0x101; | |
840 | break; | |
841 | case V4L2_FIELD_INTERLACED_BT: | |
842 | value = 0x102; | |
843 | break; | |
844 | default: | |
845 | value = 0; | |
846 | break; | |
847 | } | |
848 | ceu_write(pcdev, CAIFR, value); | |
0d3244d6 | 849 | |
e622681d | 850 | sh_mobile_ceu_set_rect(icd); |
0d3244d6 MD |
851 | mdelay(1); |
852 | ||
7dfff953 | 853 | dev_geo(icd->parent, "CFLCR 0x%x\n", pcdev->cflcr); |
961801bb | 854 | ceu_write(pcdev, CFLCR, pcdev->cflcr); |
dd54203b | 855 | |
5d28d525 GL |
856 | /* |
857 | * A few words about byte order (observed in Big Endian mode) | |
dd54203b MD |
858 | * |
859 | * In data fetch mode bytes are received in chunks of 8 bytes. | |
860 | * D0, D1, D2, D3, D4, D5, D6, D7 (D0 received first) | |
861 | * | |
862 | * The data is however by default written to memory in reverse order: | |
863 | * D7, D6, D5, D4, D3, D2, D1, D0 (D7 written to lowest byte) | |
864 | * | |
865 | * The lowest three bits of CDOCR allows us to do swapping, | |
2c0a072e MD |
866 | * using 7 we swap the data bytes to match the incoming order: |
867 | * D0, D1, D2, D3, D4, D5, D6, D7 | |
dd54203b | 868 | */ |
e1db7043 | 869 | value = 0x00000007 | yuv_lineskip; |
8be65dc5 MD |
870 | |
871 | ceu_write(pcdev, CDOCR, value); | |
0d3244d6 MD |
872 | ceu_write(pcdev, CFWCR, 0); /* keep "datafetch firewall" disabled */ |
873 | ||
7dfff953 | 874 | dev_dbg(icd->parent, "S_FMT successful for %c%c%c%c %ux%u\n", |
904078f1 GL |
875 | pixfmt & 0xff, (pixfmt >> 8) & 0xff, |
876 | (pixfmt >> 16) & 0xff, (pixfmt >> 24) & 0xff, | |
6a6c8786 | 877 | icd->user_width, icd->user_height); |
904078f1 GL |
878 | |
879 | capture_restore(pcdev, capsr); | |
880 | ||
0d3244d6 | 881 | /* not in bundle mode: skip CBDSR, CDAYR2, CDACR2, CDBYR2, CDBCR2 */ |
0d3244d6 MD |
882 | return 0; |
883 | } | |
884 | ||
760697be GL |
885 | static int sh_mobile_ceu_try_bus_param(struct soc_camera_device *icd, |
886 | unsigned char buswidth) | |
0d3244d6 | 887 | { |
7dfff953 | 888 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
0d3244d6 | 889 | struct sh_mobile_ceu_dev *pcdev = ici->priv; |
e1db7043 GL |
890 | struct v4l2_subdev *sd = find_bus_subdev(pcdev, icd); |
891 | unsigned long common_flags = CEU_BUS_FLAGS; | |
892 | struct v4l2_mbus_config cfg = {.type = V4L2_MBUS_PARALLEL,}; | |
893 | int ret; | |
0d3244d6 | 894 | |
e1db7043 GL |
895 | ret = v4l2_subdev_call(sd, video, g_mbus_config, &cfg); |
896 | if (!ret) | |
897 | common_flags = soc_mbus_config_compatible(&cfg, | |
898 | common_flags); | |
899 | else if (ret != -ENOIOCTLCMD) | |
900 | return ret; | |
901 | ||
902 | if (!common_flags || buswidth > 16) | |
0d3244d6 MD |
903 | return -EINVAL; |
904 | ||
905 | return 0; | |
906 | } | |
907 | ||
760697be | 908 | static const struct soc_mbus_pixelfmt sh_mobile_ceu_formats[] = { |
9e4a56d2 | 909 | { |
760697be GL |
910 | .fourcc = V4L2_PIX_FMT_NV12, |
911 | .name = "NV12", | |
e1db7043 GL |
912 | .bits_per_sample = 8, |
913 | .packing = SOC_MBUS_PACKING_1_5X8, | |
760697be GL |
914 | .order = SOC_MBUS_ORDER_LE, |
915 | }, { | |
916 | .fourcc = V4L2_PIX_FMT_NV21, | |
917 | .name = "NV21", | |
e1db7043 GL |
918 | .bits_per_sample = 8, |
919 | .packing = SOC_MBUS_PACKING_1_5X8, | |
760697be GL |
920 | .order = SOC_MBUS_ORDER_LE, |
921 | }, { | |
922 | .fourcc = V4L2_PIX_FMT_NV16, | |
923 | .name = "NV16", | |
e1db7043 GL |
924 | .bits_per_sample = 8, |
925 | .packing = SOC_MBUS_PACKING_2X8_PADHI, | |
760697be GL |
926 | .order = SOC_MBUS_ORDER_LE, |
927 | }, { | |
928 | .fourcc = V4L2_PIX_FMT_NV61, | |
929 | .name = "NV61", | |
e1db7043 GL |
930 | .bits_per_sample = 8, |
931 | .packing = SOC_MBUS_PACKING_2X8_PADHI, | |
760697be | 932 | .order = SOC_MBUS_ORDER_LE, |
9e4a56d2 | 933 | }, |
8be65dc5 MD |
934 | }; |
935 | ||
760697be GL |
936 | /* This will be corrected as we get more formats */ |
937 | static bool sh_mobile_ceu_packing_supported(const struct soc_mbus_pixelfmt *fmt) | |
938 | { | |
939 | return fmt->packing == SOC_MBUS_PACKING_NONE || | |
e1db7043 GL |
940 | (fmt->bits_per_sample == 8 && |
941 | fmt->packing == SOC_MBUS_PACKING_1_5X8) || | |
760697be GL |
942 | (fmt->bits_per_sample == 8 && |
943 | fmt->packing == SOC_MBUS_PACKING_2X8_PADHI) || | |
944 | (fmt->bits_per_sample > 8 && | |
945 | fmt->packing == SOC_MBUS_PACKING_EXTEND16); | |
946 | } | |
947 | ||
e622681d GL |
948 | static int client_g_rect(struct v4l2_subdev *sd, struct v4l2_rect *rect); |
949 | ||
3805f201 | 950 | static int sh_mobile_ceu_get_formats(struct soc_camera_device *icd, unsigned int idx, |
9414de39 MD |
951 | struct soc_camera_format_xlate *xlate) |
952 | { | |
760697be | 953 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
7dfff953 | 954 | struct device *dev = icd->parent; |
b3b5020d GL |
955 | struct soc_camera_host *ici = to_soc_camera_host(dev); |
956 | struct sh_mobile_ceu_dev *pcdev = ici->priv; | |
8be65dc5 | 957 | int ret, k, n; |
9414de39 | 958 | int formats = 0; |
904078f1 | 959 | struct sh_mobile_ceu_cam *cam; |
760697be GL |
960 | enum v4l2_mbus_pixelcode code; |
961 | const struct soc_mbus_pixelfmt *fmt; | |
9414de39 | 962 | |
760697be GL |
963 | ret = v4l2_subdev_call(sd, video, enum_mbus_fmt, idx, &code); |
964 | if (ret < 0) | |
965 | /* No more formats */ | |
966 | return 0; | |
967 | ||
968 | fmt = soc_mbus_get_fmtdesc(code); | |
969 | if (!fmt) { | |
d2dcad49 GL |
970 | dev_warn(dev, "unsupported format code #%u: %d\n", idx, code); |
971 | return 0; | |
760697be GL |
972 | } |
973 | ||
6b526fed | 974 | if (!pcdev->pdata->csi2) { |
e1db7043 | 975 | /* Are there any restrictions in the CSI-2 case? */ |
b3b5020d GL |
976 | ret = sh_mobile_ceu_try_bus_param(icd, fmt->bits_per_sample); |
977 | if (ret < 0) | |
978 | return 0; | |
979 | } | |
9414de39 | 980 | |
904078f1 | 981 | if (!icd->host_priv) { |
e622681d GL |
982 | struct v4l2_mbus_framefmt mf; |
983 | struct v4l2_rect rect; | |
e622681d GL |
984 | int shift = 0; |
985 | ||
986 | /* FIXME: subwindow is lost between close / open */ | |
987 | ||
988 | /* Cache current client geometry */ | |
989 | ret = client_g_rect(sd, &rect); | |
990 | if (ret < 0) | |
991 | return ret; | |
992 | ||
993 | /* First time */ | |
994 | ret = v4l2_subdev_call(sd, video, g_mbus_fmt, &mf); | |
995 | if (ret < 0) | |
996 | return ret; | |
997 | ||
998 | while ((mf.width > 2560 || mf.height > 1920) && shift < 4) { | |
999 | /* Try 2560x1920, 1280x960, 640x480, 320x240 */ | |
1000 | mf.width = 2560 >> shift; | |
1001 | mf.height = 1920 >> shift; | |
24105ebc | 1002 | ret = v4l2_device_call_until_err(sd->v4l2_dev, (long)icd, video, |
b3b5020d | 1003 | s_mbus_fmt, &mf); |
e622681d GL |
1004 | if (ret < 0) |
1005 | return ret; | |
1006 | shift++; | |
1007 | } | |
1008 | ||
1009 | if (shift == 4) { | |
1010 | dev_err(dev, "Failed to configure the client below %ux%x\n", | |
1011 | mf.width, mf.height); | |
1012 | return -EIO; | |
1013 | } | |
1014 | ||
1015 | dev_geo(dev, "camera fmt %ux%u\n", mf.width, mf.height); | |
1016 | ||
904078f1 GL |
1017 | cam = kzalloc(sizeof(*cam), GFP_KERNEL); |
1018 | if (!cam) | |
1019 | return -ENOMEM; | |
1020 | ||
e622681d GL |
1021 | /* We are called with current camera crop, initialise subrect with it */ |
1022 | cam->rect = rect; | |
1023 | cam->subrect = rect; | |
1024 | ||
1025 | cam->width = mf.width; | |
1026 | cam->height = mf.height; | |
1027 | ||
904078f1 GL |
1028 | icd->host_priv = cam; |
1029 | } else { | |
1030 | cam = icd->host_priv; | |
1031 | } | |
1032 | ||
c8329acc GL |
1033 | /* Beginning of a pass */ |
1034 | if (!idx) | |
904078f1 | 1035 | cam->extra_fmt = NULL; |
c8329acc | 1036 | |
760697be | 1037 | switch (code) { |
ace6e979 GL |
1038 | case V4L2_MBUS_FMT_UYVY8_2X8: |
1039 | case V4L2_MBUS_FMT_VYUY8_2X8: | |
1040 | case V4L2_MBUS_FMT_YUYV8_2X8: | |
1041 | case V4L2_MBUS_FMT_YVYU8_2X8: | |
904078f1 | 1042 | if (cam->extra_fmt) |
760697be | 1043 | break; |
c8329acc GL |
1044 | |
1045 | /* | |
1046 | * Our case is simple so far: for any of the above four camera | |
1047 | * formats we add all our four synthesized NV* formats, so, | |
1048 | * just marking the device with a single flag suffices. If | |
1049 | * the format generation rules are more complex, you would have | |
1050 | * to actually hang your already added / counted formats onto | |
1051 | * the host_priv pointer and check whether the format you're | |
1052 | * going to add now is already there. | |
1053 | */ | |
760697be | 1054 | cam->extra_fmt = sh_mobile_ceu_formats; |
c8329acc | 1055 | |
8be65dc5 MD |
1056 | n = ARRAY_SIZE(sh_mobile_ceu_formats); |
1057 | formats += n; | |
1058 | for (k = 0; xlate && k < n; k++) { | |
760697be GL |
1059 | xlate->host_fmt = &sh_mobile_ceu_formats[k]; |
1060 | xlate->code = code; | |
8be65dc5 | 1061 | xlate++; |
760697be GL |
1062 | dev_dbg(dev, "Providing format %s using code %d\n", |
1063 | sh_mobile_ceu_formats[k].name, code); | |
8be65dc5 | 1064 | } |
760697be | 1065 | break; |
9414de39 | 1066 | default: |
760697be GL |
1067 | if (!sh_mobile_ceu_packing_supported(fmt)) |
1068 | return 0; | |
1069 | } | |
1070 | ||
1071 | /* Generic pass-through */ | |
1072 | formats++; | |
1073 | if (xlate) { | |
1074 | xlate->host_fmt = fmt; | |
1075 | xlate->code = code; | |
1076 | xlate++; | |
1077 | dev_dbg(dev, "Providing format %s in pass-through mode\n", | |
e53a4805 | 1078 | fmt->name); |
9414de39 MD |
1079 | } |
1080 | ||
1081 | return formats; | |
1082 | } | |
1083 | ||
904078f1 GL |
1084 | static void sh_mobile_ceu_put_formats(struct soc_camera_device *icd) |
1085 | { | |
1086 | kfree(icd->host_priv); | |
1087 | icd->host_priv = NULL; | |
1088 | } | |
1089 | ||
961801bb | 1090 | /* Check if any dimension of r1 is smaller than respective one of r2 */ |
904078f1 GL |
1091 | static bool is_smaller(struct v4l2_rect *r1, struct v4l2_rect *r2) |
1092 | { | |
1093 | return r1->width < r2->width || r1->height < r2->height; | |
1094 | } | |
1095 | ||
961801bb GL |
1096 | /* Check if r1 fails to cover r2 */ |
1097 | static bool is_inside(struct v4l2_rect *r1, struct v4l2_rect *r2) | |
1098 | { | |
1099 | return r1->left > r2->left || r1->top > r2->top || | |
1100 | r1->left + r1->width < r2->left + r2->width || | |
1101 | r1->top + r1->height < r2->top + r2->height; | |
1102 | } | |
1103 | ||
6a6c8786 GL |
1104 | static unsigned int scale_down(unsigned int size, unsigned int scale) |
1105 | { | |
1106 | return (size * 4096 + scale / 2) / scale; | |
1107 | } | |
1108 | ||
6a6c8786 GL |
1109 | static unsigned int calc_generic_scale(unsigned int input, unsigned int output) |
1110 | { | |
1111 | return (input * 4096 + output / 2) / output; | |
1112 | } | |
1113 | ||
e622681d | 1114 | /* Get and store current client crop */ |
6a6c8786 GL |
1115 | static int client_g_rect(struct v4l2_subdev *sd, struct v4l2_rect *rect) |
1116 | { | |
1117 | struct v4l2_crop crop; | |
1118 | struct v4l2_cropcap cap; | |
1119 | int ret; | |
1120 | ||
1121 | crop.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; | |
1122 | ||
1123 | ret = v4l2_subdev_call(sd, video, g_crop, &crop); | |
1124 | if (!ret) { | |
1125 | *rect = crop.c; | |
1126 | return ret; | |
1127 | } | |
1128 | ||
1129 | /* Camera driver doesn't support .g_crop(), assume default rectangle */ | |
1130 | cap.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; | |
1131 | ||
1132 | ret = v4l2_subdev_call(sd, video, cropcap, &cap); | |
e622681d GL |
1133 | if (!ret) |
1134 | *rect = cap.defrect; | |
6a6c8786 GL |
1135 | |
1136 | return ret; | |
1137 | } | |
1138 | ||
e622681d GL |
1139 | /* Client crop has changed, update our sub-rectangle to remain within the area */ |
1140 | static void update_subrect(struct sh_mobile_ceu_cam *cam) | |
1141 | { | |
1142 | struct v4l2_rect *rect = &cam->rect, *subrect = &cam->subrect; | |
1143 | ||
1144 | if (rect->width < subrect->width) | |
1145 | subrect->width = rect->width; | |
1146 | ||
1147 | if (rect->height < subrect->height) | |
1148 | subrect->height = rect->height; | |
1149 | ||
1150 | if (rect->left > subrect->left) | |
1151 | subrect->left = rect->left; | |
1152 | else if (rect->left + rect->width > | |
1153 | subrect->left + subrect->width) | |
1154 | subrect->left = rect->left + rect->width - | |
1155 | subrect->width; | |
1156 | ||
1157 | if (rect->top > subrect->top) | |
1158 | subrect->top = rect->top; | |
1159 | else if (rect->top + rect->height > | |
1160 | subrect->top + subrect->height) | |
1161 | subrect->top = rect->top + rect->height - | |
1162 | subrect->height; | |
1163 | } | |
1164 | ||
961801bb | 1165 | /* |
6a6c8786 | 1166 | * The common for both scaling and cropping iterative approach is: |
961801bb GL |
1167 | * 1. try if the client can produce exactly what requested by the user |
1168 | * 2. if (1) failed, try to double the client image until we get one big enough | |
1169 | * 3. if (2) failed, try to request the maximum image | |
1170 | */ | |
e622681d | 1171 | static int client_s_crop(struct soc_camera_device *icd, struct v4l2_crop *crop, |
6a6c8786 | 1172 | struct v4l2_crop *cam_crop) |
09e231b3 | 1173 | { |
e622681d | 1174 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
6a6c8786 GL |
1175 | struct v4l2_rect *rect = &crop->c, *cam_rect = &cam_crop->c; |
1176 | struct device *dev = sd->v4l2_dev->dev; | |
e622681d | 1177 | struct sh_mobile_ceu_cam *cam = icd->host_priv; |
6a6c8786 | 1178 | struct v4l2_cropcap cap; |
904078f1 | 1179 | int ret; |
6a6c8786 | 1180 | unsigned int width, height; |
904078f1 | 1181 | |
6a6c8786 GL |
1182 | v4l2_subdev_call(sd, video, s_crop, crop); |
1183 | ret = client_g_rect(sd, cam_rect); | |
1184 | if (ret < 0) | |
1185 | return ret; | |
961801bb | 1186 | |
6a6c8786 GL |
1187 | /* |
1188 | * Now cam_crop contains the current camera input rectangle, and it must | |
1189 | * be within camera cropcap bounds | |
1190 | */ | |
1191 | if (!memcmp(rect, cam_rect, sizeof(*rect))) { | |
1192 | /* Even if camera S_CROP failed, but camera rectangle matches */ | |
e26b3144 | 1193 | dev_dbg(dev, "Camera S_CROP successful for %dx%d@%d:%d\n", |
6a6c8786 | 1194 | rect->width, rect->height, rect->left, rect->top); |
e622681d | 1195 | cam->rect = *cam_rect; |
6a6c8786 | 1196 | return 0; |
904078f1 GL |
1197 | } |
1198 | ||
6a6c8786 | 1199 | /* Try to fix cropping, that camera hasn't managed to set */ |
e26b3144 | 1200 | dev_geo(dev, "Fix camera S_CROP for %dx%d@%d:%d to %dx%d@%d:%d\n", |
6a6c8786 | 1201 | cam_rect->width, cam_rect->height, |
08590b96 | 1202 | cam_rect->left, cam_rect->top, |
6a6c8786 GL |
1203 | rect->width, rect->height, rect->left, rect->top); |
1204 | ||
1205 | /* We need sensor maximum rectangle */ | |
1206 | ret = v4l2_subdev_call(sd, video, cropcap, &cap); | |
1207 | if (ret < 0) | |
1208 | return ret; | |
1209 | ||
e622681d | 1210 | /* Put user requested rectangle within sensor bounds */ |
6a6c8786 GL |
1211 | soc_camera_limit_side(&rect->left, &rect->width, cap.bounds.left, 2, |
1212 | cap.bounds.width); | |
1213 | soc_camera_limit_side(&rect->top, &rect->height, cap.bounds.top, 4, | |
1214 | cap.bounds.height); | |
904078f1 GL |
1215 | |
1216 | /* | |
1217 | * Popular special case - some cameras can only handle fixed sizes like | |
1218 | * QVGA, VGA,... Take care to avoid infinite loop. | |
1219 | */ | |
6a6c8786 GL |
1220 | width = max(cam_rect->width, 2); |
1221 | height = max(cam_rect->height, 2); | |
1222 | ||
e622681d GL |
1223 | /* |
1224 | * Loop as long as sensor is not covering the requested rectangle and | |
1225 | * is still within its bounds | |
1226 | */ | |
6a6c8786 GL |
1227 | while (!ret && (is_smaller(cam_rect, rect) || |
1228 | is_inside(cam_rect, rect)) && | |
1229 | (cap.bounds.width > width || cap.bounds.height > height)) { | |
961801bb GL |
1230 | |
1231 | width *= 2; | |
1232 | height *= 2; | |
6a6c8786 | 1233 | |
08590b96 GL |
1234 | cam_rect->width = width; |
1235 | cam_rect->height = height; | |
904078f1 | 1236 | |
6a6c8786 GL |
1237 | /* |
1238 | * We do not know what capabilities the camera has to set up | |
1239 | * left and top borders. We could try to be smarter in iterating | |
1240 | * them, e.g., if camera current left is to the right of the | |
1241 | * target left, set it to the middle point between the current | |
1242 | * left and minimum left. But that would add too much | |
1243 | * complexity: we would have to iterate each border separately. | |
e622681d | 1244 | * Instead we just drop to the left and top bounds. |
6a6c8786 GL |
1245 | */ |
1246 | if (cam_rect->left > rect->left) | |
1247 | cam_rect->left = cap.bounds.left; | |
961801bb | 1248 | |
6a6c8786 GL |
1249 | if (cam_rect->left + cam_rect->width < rect->left + rect->width) |
1250 | cam_rect->width = rect->left + rect->width - | |
08590b96 | 1251 | cam_rect->left; |
961801bb | 1252 | |
6a6c8786 GL |
1253 | if (cam_rect->top > rect->top) |
1254 | cam_rect->top = cap.bounds.top; | |
961801bb | 1255 | |
6a6c8786 GL |
1256 | if (cam_rect->top + cam_rect->height < rect->top + rect->height) |
1257 | cam_rect->height = rect->top + rect->height - | |
08590b96 | 1258 | cam_rect->top; |
961801bb | 1259 | |
6a6c8786 GL |
1260 | v4l2_subdev_call(sd, video, s_crop, cam_crop); |
1261 | ret = client_g_rect(sd, cam_rect); | |
e26b3144 | 1262 | dev_geo(dev, "Camera S_CROP %d for %dx%d@%d:%d\n", ret, |
6a6c8786 | 1263 | cam_rect->width, cam_rect->height, |
08590b96 | 1264 | cam_rect->left, cam_rect->top); |
904078f1 GL |
1265 | } |
1266 | ||
6a6c8786 GL |
1267 | /* S_CROP must not modify the rectangle */ |
1268 | if (is_smaller(cam_rect, rect) || is_inside(cam_rect, rect)) { | |
904078f1 GL |
1269 | /* |
1270 | * The camera failed to configure a suitable cropping, | |
1271 | * we cannot use the current rectangle, set to max | |
1272 | */ | |
6a6c8786 GL |
1273 | *cam_rect = cap.bounds; |
1274 | v4l2_subdev_call(sd, video, s_crop, cam_crop); | |
1275 | ret = client_g_rect(sd, cam_rect); | |
e26b3144 | 1276 | dev_geo(dev, "Camera S_CROP %d for max %dx%d@%d:%d\n", ret, |
6a6c8786 | 1277 | cam_rect->width, cam_rect->height, |
08590b96 | 1278 | cam_rect->left, cam_rect->top); |
904078f1 GL |
1279 | } |
1280 | ||
e622681d GL |
1281 | if (!ret) { |
1282 | cam->rect = *cam_rect; | |
1283 | update_subrect(cam); | |
6a6c8786 GL |
1284 | } |
1285 | ||
e622681d | 1286 | return ret; |
6a6c8786 GL |
1287 | } |
1288 | ||
e622681d | 1289 | /* Iterative s_mbus_fmt, also updates cached client crop on success */ |
760697be GL |
1290 | static int client_s_fmt(struct soc_camera_device *icd, |
1291 | struct v4l2_mbus_framefmt *mf, bool ceu_can_scale) | |
6a6c8786 | 1292 | { |
e622681d | 1293 | struct sh_mobile_ceu_cam *cam = icd->host_priv; |
6a6c8786 | 1294 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
7dfff953 | 1295 | struct device *dev = icd->parent; |
760697be | 1296 | unsigned int width = mf->width, height = mf->height, tmp_w, tmp_h; |
6a6c8786 GL |
1297 | unsigned int max_width, max_height; |
1298 | struct v4l2_cropcap cap; | |
36988741 | 1299 | bool ceu_1to1; |
6a6c8786 GL |
1300 | int ret; |
1301 | ||
24105ebc | 1302 | ret = v4l2_device_call_until_err(sd->v4l2_dev, (long)icd, video, |
b3b5020d | 1303 | s_mbus_fmt, mf); |
e622681d GL |
1304 | if (ret < 0) |
1305 | return ret; | |
1306 | ||
1307 | dev_geo(dev, "camera scaled to %ux%u\n", mf->width, mf->height); | |
1308 | ||
36988741 GL |
1309 | if (width == mf->width && height == mf->height) { |
1310 | /* Perfect! The client has done it all. */ | |
1311 | ceu_1to1 = true; | |
1312 | goto update_cache; | |
1313 | } | |
1314 | ||
1315 | ceu_1to1 = false; | |
1316 | if (!ceu_can_scale) | |
e622681d GL |
1317 | goto update_cache; |
1318 | ||
6a6c8786 GL |
1319 | cap.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; |
1320 | ||
1321 | ret = v4l2_subdev_call(sd, video, cropcap, &cap); | |
1322 | if (ret < 0) | |
1323 | return ret; | |
1324 | ||
1325 | max_width = min(cap.bounds.width, 2560); | |
1326 | max_height = min(cap.bounds.height, 1920); | |
1327 | ||
6a6c8786 | 1328 | /* Camera set a format, but geometry is not precise, try to improve */ |
760697be GL |
1329 | tmp_w = mf->width; |
1330 | tmp_h = mf->height; | |
6a6c8786 GL |
1331 | |
1332 | /* width <= max_width && height <= max_height - guaranteed by try_fmt */ | |
1333 | while ((width > tmp_w || height > tmp_h) && | |
1334 | tmp_w < max_width && tmp_h < max_height) { | |
1335 | tmp_w = min(2 * tmp_w, max_width); | |
1336 | tmp_h = min(2 * tmp_h, max_height); | |
760697be GL |
1337 | mf->width = tmp_w; |
1338 | mf->height = tmp_h; | |
24105ebc | 1339 | ret = v4l2_device_call_until_err(sd->v4l2_dev, (long)icd, video, |
b3b5020d | 1340 | s_mbus_fmt, mf); |
6a6c8786 | 1341 | dev_geo(dev, "Camera scaled to %ux%u\n", |
760697be | 1342 | mf->width, mf->height); |
6a6c8786 GL |
1343 | if (ret < 0) { |
1344 | /* This shouldn't happen */ | |
1345 | dev_err(dev, "Client failed to set format: %d\n", ret); | |
1346 | return ret; | |
1347 | } | |
1348 | } | |
1349 | ||
e622681d GL |
1350 | update_cache: |
1351 | /* Update cache */ | |
1352 | ret = client_g_rect(sd, &cam->rect); | |
1353 | if (ret < 0) | |
1354 | return ret; | |
1355 | ||
36988741 GL |
1356 | if (ceu_1to1) |
1357 | cam->subrect = cam->rect; | |
1358 | else | |
1359 | update_subrect(cam); | |
e622681d | 1360 | |
6a6c8786 GL |
1361 | return 0; |
1362 | } | |
1363 | ||
1364 | /** | |
e622681d GL |
1365 | * @width - on output: user width, mapped back to input |
1366 | * @height - on output: user height, mapped back to input | |
1367 | * @mf - in- / output camera output window | |
6a6c8786 | 1368 | */ |
e622681d GL |
1369 | static int client_scale(struct soc_camera_device *icd, |
1370 | struct v4l2_mbus_framefmt *mf, | |
1371 | unsigned int *width, unsigned int *height, | |
1372 | bool ceu_can_scale) | |
6a6c8786 | 1373 | { |
6a6c8786 | 1374 | struct sh_mobile_ceu_cam *cam = icd->host_priv; |
7dfff953 | 1375 | struct device *dev = icd->parent; |
760697be | 1376 | struct v4l2_mbus_framefmt mf_tmp = *mf; |
6a6c8786 GL |
1377 | unsigned int scale_h, scale_v; |
1378 | int ret; | |
1379 | ||
e622681d GL |
1380 | /* |
1381 | * 5. Apply iterative camera S_FMT for camera user window (also updates | |
1382 | * client crop cache and the imaginary sub-rectangle). | |
1383 | */ | |
760697be | 1384 | ret = client_s_fmt(icd, &mf_tmp, ceu_can_scale); |
6a6c8786 GL |
1385 | if (ret < 0) |
1386 | return ret; | |
1387 | ||
1388 | dev_geo(dev, "5: camera scaled to %ux%u\n", | |
760697be | 1389 | mf_tmp.width, mf_tmp.height); |
6a6c8786 GL |
1390 | |
1391 | /* 6. Retrieve camera output window (g_fmt) */ | |
1392 | ||
760697be | 1393 | /* unneeded - it is already in "mf_tmp" */ |
6a6c8786 | 1394 | |
e622681d GL |
1395 | /* 7. Calculate new client scales. */ |
1396 | scale_h = calc_generic_scale(cam->rect.width, mf_tmp.width); | |
1397 | scale_v = calc_generic_scale(cam->rect.height, mf_tmp.height); | |
6a6c8786 | 1398 | |
760697be GL |
1399 | mf->width = mf_tmp.width; |
1400 | mf->height = mf_tmp.height; | |
1401 | mf->colorspace = mf_tmp.colorspace; | |
904078f1 GL |
1402 | |
1403 | /* | |
6a6c8786 | 1404 | * 8. Calculate new CEU crop - apply camera scales to previously |
e622681d | 1405 | * updated "effective" crop. |
904078f1 | 1406 | */ |
e622681d GL |
1407 | *width = scale_down(cam->subrect.width, scale_h); |
1408 | *height = scale_down(cam->subrect.height, scale_v); | |
6a6c8786 | 1409 | |
e622681d | 1410 | dev_geo(dev, "8: new client sub-window %ux%u\n", *width, *height); |
6a6c8786 GL |
1411 | |
1412 | return 0; | |
1413 | } | |
1414 | ||
1415 | /* | |
1416 | * CEU can scale and crop, but we don't want to waste bandwidth and kill the | |
1417 | * framerate by always requesting the maximum image from the client. See | |
3dac322d | 1418 | * Documentation/video4linux/sh_mobile_ceu_camera.txt for a description of |
6a6c8786 GL |
1419 | * scaling and cropping algorithms and for the meaning of referenced here steps. |
1420 | */ | |
1421 | static int sh_mobile_ceu_set_crop(struct soc_camera_device *icd, | |
1422 | struct v4l2_crop *a) | |
1423 | { | |
1424 | struct v4l2_rect *rect = &a->c; | |
7dfff953 GL |
1425 | struct device *dev = icd->parent; |
1426 | struct soc_camera_host *ici = to_soc_camera_host(dev); | |
6a6c8786 GL |
1427 | struct sh_mobile_ceu_dev *pcdev = ici->priv; |
1428 | struct v4l2_crop cam_crop; | |
1429 | struct sh_mobile_ceu_cam *cam = icd->host_priv; | |
e622681d | 1430 | struct v4l2_rect *cam_rect = &cam_crop.c; |
6a6c8786 | 1431 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
760697be | 1432 | struct v4l2_mbus_framefmt mf; |
e622681d | 1433 | unsigned int scale_cam_h, scale_cam_v, scale_ceu_h, scale_ceu_v, |
787d0f9d | 1434 | out_width, out_height; |
e622681d | 1435 | int interm_width, interm_height; |
6a6c8786 GL |
1436 | u32 capsr, cflcr; |
1437 | int ret; | |
1438 | ||
e622681d GL |
1439 | dev_geo(dev, "S_CROP(%ux%u@%u:%u)\n", rect->width, rect->height, |
1440 | rect->left, rect->top); | |
6a6c8786 | 1441 | |
e622681d GL |
1442 | /* During camera cropping its output window can change too, stop CEU */ |
1443 | capsr = capture_save_reset(pcdev); | |
1444 | dev_dbg(dev, "CAPSR 0x%x, CFLCR 0x%x\n", capsr, pcdev->cflcr); | |
6a6c8786 | 1445 | |
eec5ce01 GL |
1446 | /* |
1447 | * 1. - 2. Apply iterative camera S_CROP for new input window, read back | |
1448 | * actual camera rectangle. | |
1449 | */ | |
e622681d | 1450 | ret = client_s_crop(icd, a, &cam_crop); |
6a6c8786 GL |
1451 | if (ret < 0) |
1452 | return ret; | |
1453 | ||
e622681d | 1454 | dev_geo(dev, "1-2: camera cropped to %ux%u@%u:%u\n", |
6a6c8786 GL |
1455 | cam_rect->width, cam_rect->height, |
1456 | cam_rect->left, cam_rect->top); | |
1457 | ||
1458 | /* On success cam_crop contains current camera crop */ | |
1459 | ||
e622681d GL |
1460 | /* 3. Retrieve camera output window */ |
1461 | ret = v4l2_subdev_call(sd, video, g_mbus_fmt, &mf); | |
1462 | if (ret < 0) | |
1463 | return ret; | |
6a6c8786 | 1464 | |
e622681d GL |
1465 | if (mf.width > 2560 || mf.height > 1920) |
1466 | return -EINVAL; | |
6a6c8786 | 1467 | |
e622681d GL |
1468 | /* 4. Calculate camera scales */ |
1469 | scale_cam_h = calc_generic_scale(cam_rect->width, mf.width); | |
1470 | scale_cam_v = calc_generic_scale(cam_rect->height, mf.height); | |
6a6c8786 | 1471 | |
e622681d GL |
1472 | /* Calculate intermediate window */ |
1473 | interm_width = scale_down(rect->width, scale_cam_h); | |
1474 | interm_height = scale_down(rect->height, scale_cam_v); | |
6a6c8786 | 1475 | |
3dac322d GL |
1476 | if (interm_width < icd->user_width) { |
1477 | u32 new_scale_h; | |
1478 | ||
1479 | new_scale_h = calc_generic_scale(rect->width, icd->user_width); | |
1480 | ||
1481 | mf.width = scale_down(cam_rect->width, new_scale_h); | |
1482 | } | |
1483 | ||
1484 | if (interm_height < icd->user_height) { | |
1485 | u32 new_scale_v; | |
1486 | ||
1487 | new_scale_v = calc_generic_scale(rect->height, icd->user_height); | |
1488 | ||
1489 | mf.height = scale_down(cam_rect->height, new_scale_v); | |
1490 | } | |
1491 | ||
1492 | if (interm_width < icd->user_width || interm_height < icd->user_height) { | |
1493 | ret = v4l2_device_call_until_err(sd->v4l2_dev, (int)icd, video, | |
1494 | s_mbus_fmt, &mf); | |
1495 | if (ret < 0) | |
1496 | return ret; | |
1497 | ||
1498 | dev_geo(dev, "New camera output %ux%u\n", mf.width, mf.height); | |
1499 | scale_cam_h = calc_generic_scale(cam_rect->width, mf.width); | |
1500 | scale_cam_v = calc_generic_scale(cam_rect->height, mf.height); | |
1501 | interm_width = scale_down(rect->width, scale_cam_h); | |
1502 | interm_height = scale_down(rect->height, scale_cam_v); | |
1503 | } | |
1504 | ||
1505 | /* Cache camera output window */ | |
1506 | cam->width = mf.width; | |
1507 | cam->height = mf.height; | |
1508 | ||
e622681d GL |
1509 | if (pcdev->image_mode) { |
1510 | out_width = min(interm_width, icd->user_width); | |
1511 | out_height = min(interm_height, icd->user_height); | |
1512 | } else { | |
1513 | out_width = interm_width; | |
1514 | out_height = interm_height; | |
1515 | } | |
6a6c8786 GL |
1516 | |
1517 | /* | |
e622681d GL |
1518 | * 5. Calculate CEU scales from camera scales from results of (5) and |
1519 | * the user window | |
6a6c8786 | 1520 | */ |
e622681d GL |
1521 | scale_ceu_h = calc_scale(interm_width, &out_width); |
1522 | scale_ceu_v = calc_scale(interm_height, &out_height); | |
6a6c8786 | 1523 | |
e622681d GL |
1524 | dev_geo(dev, "5: CEU scales %u:%u\n", scale_ceu_h, scale_ceu_v); |
1525 | ||
1526 | /* Apply CEU scales. */ | |
6a6c8786 GL |
1527 | cflcr = scale_ceu_h | (scale_ceu_v << 16); |
1528 | if (cflcr != pcdev->cflcr) { | |
1529 | pcdev->cflcr = cflcr; | |
1530 | ceu_write(pcdev, CFLCR, cflcr); | |
1531 | } | |
1532 | ||
eec5ce01 GL |
1533 | icd->user_width = out_width & ~3; |
1534 | icd->user_height = out_height & ~3; | |
1535 | /* Offsets are applied at the CEU scaling filter input */ | |
787d0f9d GL |
1536 | cam->ceu_left = scale_down(rect->left - cam_rect->left, scale_cam_h) & ~1; |
1537 | cam->ceu_top = scale_down(rect->top - cam_rect->top, scale_cam_v) & ~1; | |
e622681d GL |
1538 | |
1539 | /* 6. Use CEU cropping to crop to the new window. */ | |
1540 | sh_mobile_ceu_set_rect(icd); | |
1541 | ||
1542 | cam->subrect = *rect; | |
1543 | ||
1544 | dev_geo(dev, "6: CEU cropped to %ux%u@%u:%u\n", | |
1545 | icd->user_width, icd->user_height, | |
1546 | cam->ceu_left, cam->ceu_top); | |
1547 | ||
787d0f9d | 1548 | /* Restore capture. The CE bit can be cleared by the hardware */ |
904078f1 GL |
1549 | if (pcdev->active) |
1550 | capsr |= 1; | |
904078f1 GL |
1551 | capture_restore(pcdev, capsr); |
1552 | ||
904078f1 GL |
1553 | /* Even if only camera cropping succeeded */ |
1554 | return ret; | |
09e231b3 GL |
1555 | } |
1556 | ||
e622681d GL |
1557 | static int sh_mobile_ceu_get_crop(struct soc_camera_device *icd, |
1558 | struct v4l2_crop *a) | |
1559 | { | |
1560 | struct sh_mobile_ceu_cam *cam = icd->host_priv; | |
1561 | ||
1562 | a->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; | |
1563 | a->c = cam->subrect; | |
1564 | ||
1565 | return 0; | |
1566 | } | |
1567 | ||
1568 | /* | |
1569 | * Calculate real client output window by applying new scales to the current | |
1570 | * client crop. New scales are calculated from the requested output format and | |
1571 | * CEU crop, mapped backed onto the client input (subrect). | |
1572 | */ | |
1573 | static void calculate_client_output(struct soc_camera_device *icd, | |
eec5ce01 | 1574 | const struct v4l2_pix_format *pix, struct v4l2_mbus_framefmt *mf) |
e622681d GL |
1575 | { |
1576 | struct sh_mobile_ceu_cam *cam = icd->host_priv; | |
7dfff953 | 1577 | struct device *dev = icd->parent; |
e622681d GL |
1578 | struct v4l2_rect *cam_subrect = &cam->subrect; |
1579 | unsigned int scale_v, scale_h; | |
1580 | ||
1581 | if (cam_subrect->width == cam->rect.width && | |
1582 | cam_subrect->height == cam->rect.height) { | |
1583 | /* No sub-cropping */ | |
1584 | mf->width = pix->width; | |
1585 | mf->height = pix->height; | |
1586 | return; | |
1587 | } | |
1588 | ||
1589 | /* 1.-2. Current camera scales and subwin - cached. */ | |
1590 | ||
1591 | dev_geo(dev, "2: subwin %ux%u@%u:%u\n", | |
1592 | cam_subrect->width, cam_subrect->height, | |
1593 | cam_subrect->left, cam_subrect->top); | |
1594 | ||
1595 | /* | |
1596 | * 3. Calculate new combined scales from input sub-window to requested | |
1597 | * user window. | |
1598 | */ | |
1599 | ||
1600 | /* | |
1601 | * TODO: CEU cannot scale images larger than VGA to smaller than SubQCIF | |
1602 | * (128x96) or larger than VGA | |
1603 | */ | |
1604 | scale_h = calc_generic_scale(cam_subrect->width, pix->width); | |
1605 | scale_v = calc_generic_scale(cam_subrect->height, pix->height); | |
1606 | ||
1607 | dev_geo(dev, "3: scales %u:%u\n", scale_h, scale_v); | |
1608 | ||
1609 | /* | |
36988741 GL |
1610 | * 4. Calculate desired client output window by applying combined scales |
1611 | * to client (real) input window. | |
e622681d GL |
1612 | */ |
1613 | mf->width = scale_down(cam->rect.width, scale_h); | |
1614 | mf->height = scale_down(cam->rect.height, scale_v); | |
1615 | } | |
1616 | ||
961801bb | 1617 | /* Similar to set_crop multistage iterative algorithm */ |
d8fac217 | 1618 | static int sh_mobile_ceu_set_fmt(struct soc_camera_device *icd, |
09e231b3 | 1619 | struct v4l2_format *f) |
0d3244d6 | 1620 | { |
7dfff953 GL |
1621 | struct device *dev = icd->parent; |
1622 | struct soc_camera_host *ici = to_soc_camera_host(dev); | |
961801bb | 1623 | struct sh_mobile_ceu_dev *pcdev = ici->priv; |
904078f1 GL |
1624 | struct sh_mobile_ceu_cam *cam = icd->host_priv; |
1625 | struct v4l2_pix_format *pix = &f->fmt.pix; | |
760697be | 1626 | struct v4l2_mbus_framefmt mf; |
904078f1 | 1627 | __u32 pixfmt = pix->pixelformat; |
9414de39 | 1628 | const struct soc_camera_format_xlate *xlate; |
b3b5020d GL |
1629 | /* Keep Compiler Happy */ |
1630 | unsigned int ceu_sub_width = 0, ceu_sub_height = 0; | |
6a6c8786 GL |
1631 | u16 scale_v, scale_h; |
1632 | int ret; | |
1edcc10d KM |
1633 | bool image_mode; |
1634 | enum v4l2_field field; | |
961801bb GL |
1635 | |
1636 | switch (pix->field) { | |
961801bb GL |
1637 | default: |
1638 | pix->field = V4L2_FIELD_NONE; | |
1639 | /* fall-through */ | |
1edcc10d KM |
1640 | case V4L2_FIELD_INTERLACED_TB: |
1641 | case V4L2_FIELD_INTERLACED_BT: | |
961801bb | 1642 | case V4L2_FIELD_NONE: |
1edcc10d KM |
1643 | field = pix->field; |
1644 | break; | |
1645 | case V4L2_FIELD_INTERLACED: | |
1646 | field = V4L2_FIELD_INTERLACED_TB; | |
961801bb GL |
1647 | break; |
1648 | } | |
25c4d74e | 1649 | |
9414de39 MD |
1650 | xlate = soc_camera_xlate_by_fourcc(icd, pixfmt); |
1651 | if (!xlate) { | |
6a6c8786 | 1652 | dev_warn(dev, "Format %x not found\n", pixfmt); |
9414de39 | 1653 | return -EINVAL; |
25c4d74e GL |
1654 | } |
1655 | ||
36988741 | 1656 | /* 1.-4. Calculate desired client output geometry */ |
eec5ce01 | 1657 | calculate_client_output(icd, pix, &mf); |
760697be GL |
1658 | mf.field = pix->field; |
1659 | mf.colorspace = pix->colorspace; | |
1660 | mf.code = xlate->code; | |
6a6c8786 | 1661 | |
961801bb GL |
1662 | switch (pixfmt) { |
1663 | case V4L2_PIX_FMT_NV12: | |
1664 | case V4L2_PIX_FMT_NV21: | |
1665 | case V4L2_PIX_FMT_NV16: | |
1666 | case V4L2_PIX_FMT_NV61: | |
6a6c8786 | 1667 | image_mode = true; |
961801bb GL |
1668 | break; |
1669 | default: | |
6a6c8786 | 1670 | image_mode = false; |
9414de39 | 1671 | } |
25c4d74e | 1672 | |
e1db7043 GL |
1673 | dev_info(dev, "S_FMT(pix=0x%x, fld 0x%x, code 0x%x, %ux%u)\n", pixfmt, mf.field, mf.code, |
1674 | pix->width, pix->height); | |
1675 | ||
e622681d | 1676 | dev_geo(dev, "4: request camera output %ux%u\n", mf.width, mf.height); |
961801bb | 1677 | |
6a6c8786 | 1678 | /* 5. - 9. */ |
e622681d | 1679 | ret = client_scale(icd, &mf, &ceu_sub_width, &ceu_sub_height, |
1edcc10d | 1680 | image_mode && V4L2_FIELD_NONE == field); |
6a6c8786 | 1681 | |
e622681d | 1682 | dev_geo(dev, "5-9: client scale return %d\n", ret); |
6a6c8786 GL |
1683 | |
1684 | /* Done with the camera. Now see if we can improve the result */ | |
1685 | ||
b3b5020d GL |
1686 | dev_geo(dev, "fmt %ux%u, requested %ux%u\n", |
1687 | mf.width, mf.height, pix->width, pix->height); | |
6a6c8786 GL |
1688 | if (ret < 0) |
1689 | return ret; | |
1690 | ||
760697be GL |
1691 | if (mf.code != xlate->code) |
1692 | return -EINVAL; | |
1693 | ||
e622681d GL |
1694 | /* 9. Prepare CEU crop */ |
1695 | cam->width = mf.width; | |
1696 | cam->height = mf.height; | |
1697 | ||
6a6c8786 | 1698 | /* 10. Use CEU scaling to scale to the requested user window. */ |
961801bb GL |
1699 | |
1700 | /* We cannot scale up */ | |
e622681d GL |
1701 | if (pix->width > ceu_sub_width) |
1702 | ceu_sub_width = pix->width; | |
961801bb | 1703 | |
e622681d GL |
1704 | if (pix->height > ceu_sub_height) |
1705 | ceu_sub_height = pix->height; | |
961801bb | 1706 | |
760697be GL |
1707 | pix->colorspace = mf.colorspace; |
1708 | ||
1709 | if (image_mode) { | |
1710 | /* Scale pix->{width x height} down to width x height */ | |
e622681d GL |
1711 | scale_h = calc_scale(ceu_sub_width, &pix->width); |
1712 | scale_v = calc_scale(ceu_sub_height, &pix->height); | |
760697be | 1713 | } else { |
e622681d GL |
1714 | pix->width = ceu_sub_width; |
1715 | pix->height = ceu_sub_height; | |
1716 | scale_h = 0; | |
1717 | scale_v = 0; | |
760697be | 1718 | } |
961801bb | 1719 | |
e622681d GL |
1720 | pcdev->cflcr = scale_h | (scale_v << 16); |
1721 | ||
1722 | /* | |
1723 | * We have calculated CFLCR, the actual configuration will be performed | |
1724 | * in sh_mobile_ceu_set_bus_param() | |
1725 | */ | |
1726 | ||
6a6c8786 | 1727 | dev_geo(dev, "10: W: %u : 0x%x = %u, H: %u : 0x%x = %u\n", |
e622681d GL |
1728 | ceu_sub_width, scale_h, pix->width, |
1729 | ceu_sub_height, scale_v, pix->height); | |
961801bb | 1730 | |
760697be | 1731 | cam->code = xlate->code; |
760697be | 1732 | icd->current_fmt = xlate; |
961801bb | 1733 | |
1edcc10d | 1734 | pcdev->field = field; |
6a6c8786 | 1735 | pcdev->image_mode = image_mode; |
961801bb | 1736 | |
eec5ce01 GL |
1737 | /* CFSZR requirement */ |
1738 | pix->width &= ~3; | |
1739 | pix->height &= ~3; | |
1740 | ||
961801bb | 1741 | return 0; |
0d3244d6 MD |
1742 | } |
1743 | ||
d8fac217 GL |
1744 | static int sh_mobile_ceu_try_fmt(struct soc_camera_device *icd, |
1745 | struct v4l2_format *f) | |
0d3244d6 | 1746 | { |
9414de39 | 1747 | const struct soc_camera_format_xlate *xlate; |
904078f1 | 1748 | struct v4l2_pix_format *pix = &f->fmt.pix; |
c9c1f1c0 | 1749 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
760697be | 1750 | struct v4l2_mbus_framefmt mf; |
904078f1 | 1751 | __u32 pixfmt = pix->pixelformat; |
961801bb | 1752 | int width, height; |
ccab8a29 | 1753 | int ret; |
a2c8c68c | 1754 | |
7dfff953 | 1755 | dev_geo(icd->parent, "TRY_FMT(pix=0x%x, %ux%u)\n", |
b3b5020d GL |
1756 | pixfmt, pix->width, pix->height); |
1757 | ||
9414de39 MD |
1758 | xlate = soc_camera_xlate_by_fourcc(icd, pixfmt); |
1759 | if (!xlate) { | |
7dfff953 | 1760 | dev_warn(icd->parent, "Format %x not found\n", pixfmt); |
25c4d74e | 1761 | return -EINVAL; |
9414de39 | 1762 | } |
25c4d74e | 1763 | |
0d3244d6 MD |
1764 | /* FIXME: calculate using depth and bus width */ |
1765 | ||
eec5ce01 GL |
1766 | /* CFSZR requires height and width to be 4-pixel aligned */ |
1767 | v4l_bound_align_image(&pix->width, 2, 2560, 2, | |
904078f1 | 1768 | &pix->height, 4, 1920, 2, 0); |
0d3244d6 | 1769 | |
961801bb GL |
1770 | width = pix->width; |
1771 | height = pix->height; | |
1772 | ||
0d3244d6 | 1773 | /* limit to sensor capabilities */ |
760697be GL |
1774 | mf.width = pix->width; |
1775 | mf.height = pix->height; | |
1776 | mf.field = pix->field; | |
1777 | mf.code = xlate->code; | |
1778 | mf.colorspace = pix->colorspace; | |
1779 | ||
24105ebc | 1780 | ret = v4l2_device_call_until_err(sd->v4l2_dev, (long)icd, video, try_mbus_fmt, &mf); |
ccab8a29 KM |
1781 | if (ret < 0) |
1782 | return ret; | |
1783 | ||
760697be GL |
1784 | pix->width = mf.width; |
1785 | pix->height = mf.height; | |
1786 | pix->field = mf.field; | |
1787 | pix->colorspace = mf.colorspace; | |
1788 | ||
961801bb GL |
1789 | switch (pixfmt) { |
1790 | case V4L2_PIX_FMT_NV12: | |
1791 | case V4L2_PIX_FMT_NV21: | |
1792 | case V4L2_PIX_FMT_NV16: | |
1793 | case V4L2_PIX_FMT_NV61: | |
1794 | /* FIXME: check against rect_max after converting soc-camera */ | |
1795 | /* We can scale precisely, need a bigger image from camera */ | |
1796 | if (pix->width < width || pix->height < height) { | |
760697be GL |
1797 | /* |
1798 | * We presume, the sensor behaves sanely, i.e., if | |
1799 | * requested a bigger rectangle, it will not return a | |
1800 | * smaller one. | |
1801 | */ | |
1802 | mf.width = 2560; | |
1803 | mf.height = 1920; | |
24105ebc | 1804 | ret = v4l2_device_call_until_err(sd->v4l2_dev, (long)icd, video, |
b3b5020d | 1805 | try_mbus_fmt, &mf); |
961801bb GL |
1806 | if (ret < 0) { |
1807 | /* Shouldn't actually happen... */ | |
7dfff953 | 1808 | dev_err(icd->parent, |
760697be GL |
1809 | "FIXME: client try_fmt() = %d\n", ret); |
1810 | return ret; | |
961801bb GL |
1811 | } |
1812 | } | |
760697be GL |
1813 | /* We will scale exactly */ |
1814 | if (mf.width > width) | |
961801bb | 1815 | pix->width = width; |
760697be | 1816 | if (mf.height > height) |
961801bb | 1817 | pix->height = height; |
ccab8a29 KM |
1818 | } |
1819 | ||
eec5ce01 GL |
1820 | pix->width &= ~3; |
1821 | pix->height &= ~3; | |
1822 | ||
7dfff953 | 1823 | dev_geo(icd->parent, "%s(): return %d, fmt 0x%x, %ux%u\n", |
b3b5020d GL |
1824 | __func__, ret, pix->pixelformat, pix->width, pix->height); |
1825 | ||
ccab8a29 | 1826 | return ret; |
0d3244d6 MD |
1827 | } |
1828 | ||
3dac322d GL |
1829 | static int sh_mobile_ceu_set_livecrop(struct soc_camera_device *icd, |
1830 | struct v4l2_crop *a) | |
1831 | { | |
1832 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); | |
7dfff953 | 1833 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
3dac322d GL |
1834 | struct sh_mobile_ceu_dev *pcdev = ici->priv; |
1835 | u32 out_width = icd->user_width, out_height = icd->user_height; | |
1836 | int ret; | |
1837 | ||
1838 | /* Freeze queue */ | |
1839 | pcdev->frozen = 1; | |
1840 | /* Wait for frame */ | |
1841 | ret = wait_for_completion_interruptible(&pcdev->complete); | |
1842 | /* Stop the client */ | |
1843 | ret = v4l2_subdev_call(sd, video, s_stream, 0); | |
1844 | if (ret < 0) | |
7dfff953 | 1845 | dev_warn(icd->parent, |
3dac322d GL |
1846 | "Client failed to stop the stream: %d\n", ret); |
1847 | else | |
1848 | /* Do the crop, if it fails, there's nothing more we can do */ | |
1849 | sh_mobile_ceu_set_crop(icd, a); | |
1850 | ||
7dfff953 | 1851 | dev_geo(icd->parent, "Output after crop: %ux%u\n", icd->user_width, icd->user_height); |
3dac322d GL |
1852 | |
1853 | if (icd->user_width != out_width || icd->user_height != out_height) { | |
1854 | struct v4l2_format f = { | |
1855 | .type = V4L2_BUF_TYPE_VIDEO_CAPTURE, | |
1856 | .fmt.pix = { | |
1857 | .width = out_width, | |
1858 | .height = out_height, | |
1859 | .pixelformat = icd->current_fmt->host_fmt->fourcc, | |
1860 | .field = pcdev->field, | |
1861 | .colorspace = icd->colorspace, | |
1862 | }, | |
1863 | }; | |
1864 | ret = sh_mobile_ceu_set_fmt(icd, &f); | |
1865 | if (!ret && (out_width != f.fmt.pix.width || | |
1866 | out_height != f.fmt.pix.height)) | |
1867 | ret = -EINVAL; | |
1868 | if (!ret) { | |
eec5ce01 GL |
1869 | icd->user_width = out_width & ~3; |
1870 | icd->user_height = out_height & ~3; | |
3dac322d GL |
1871 | ret = sh_mobile_ceu_set_bus_param(icd, |
1872 | icd->current_fmt->host_fmt->fourcc); | |
1873 | } | |
1874 | } | |
1875 | ||
1876 | /* Thaw the queue */ | |
1877 | pcdev->frozen = 0; | |
1878 | spin_lock_irq(&pcdev->lock); | |
1879 | sh_mobile_ceu_capture(pcdev); | |
1880 | spin_unlock_irq(&pcdev->lock); | |
1881 | /* Start the client */ | |
1882 | ret = v4l2_subdev_call(sd, video, s_stream, 1); | |
1883 | return ret; | |
1884 | } | |
1885 | ||
0d3244d6 MD |
1886 | static unsigned int sh_mobile_ceu_poll(struct file *file, poll_table *pt) |
1887 | { | |
57bee29d | 1888 | struct soc_camera_device *icd = file->private_data; |
0d3244d6 | 1889 | |
a616898d | 1890 | return vb2_poll(&icd->vb2_vidq, file, pt); |
0d3244d6 MD |
1891 | } |
1892 | ||
1893 | static int sh_mobile_ceu_querycap(struct soc_camera_host *ici, | |
1894 | struct v4l2_capability *cap) | |
1895 | { | |
1896 | strlcpy(cap->card, "SuperH_Mobile_CEU", sizeof(cap->card)); | |
0d3244d6 MD |
1897 | cap->capabilities = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING; |
1898 | return 0; | |
1899 | } | |
1900 | ||
a616898d GL |
1901 | static int sh_mobile_ceu_init_videobuf(struct vb2_queue *q, |
1902 | struct soc_camera_device *icd) | |
0d3244d6 | 1903 | { |
a616898d GL |
1904 | q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; |
1905 | q->io_modes = VB2_MMAP | VB2_USERPTR; | |
1906 | q->drv_priv = icd; | |
1907 | q->ops = &sh_mobile_ceu_videobuf_ops; | |
1908 | q->mem_ops = &vb2_dma_contig_memops; | |
1909 | q->buf_struct_size = sizeof(struct sh_mobile_ceu_buffer); | |
1910 | ||
1911 | return vb2_queue_init(q); | |
0d3244d6 MD |
1912 | } |
1913 | ||
4a6110bc GL |
1914 | static int sh_mobile_ceu_get_ctrl(struct soc_camera_device *icd, |
1915 | struct v4l2_control *ctrl) | |
1916 | { | |
7dfff953 | 1917 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
4a6110bc GL |
1918 | struct sh_mobile_ceu_dev *pcdev = ici->priv; |
1919 | u32 val; | |
1920 | ||
1921 | switch (ctrl->id) { | |
1922 | case V4L2_CID_SHARPNESS: | |
1923 | val = ceu_read(pcdev, CLFCR); | |
1924 | ctrl->value = val ^ 1; | |
1925 | return 0; | |
1926 | } | |
1927 | return -ENOIOCTLCMD; | |
1928 | } | |
1929 | ||
1930 | static int sh_mobile_ceu_set_ctrl(struct soc_camera_device *icd, | |
1931 | struct v4l2_control *ctrl) | |
1932 | { | |
7dfff953 | 1933 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
4a6110bc GL |
1934 | struct sh_mobile_ceu_dev *pcdev = ici->priv; |
1935 | ||
1936 | switch (ctrl->id) { | |
1937 | case V4L2_CID_SHARPNESS: | |
760697be | 1938 | switch (icd->current_fmt->host_fmt->fourcc) { |
4a6110bc GL |
1939 | case V4L2_PIX_FMT_NV12: |
1940 | case V4L2_PIX_FMT_NV21: | |
1941 | case V4L2_PIX_FMT_NV16: | |
1942 | case V4L2_PIX_FMT_NV61: | |
1943 | ceu_write(pcdev, CLFCR, !ctrl->value); | |
1944 | return 0; | |
1945 | } | |
1946 | return -EINVAL; | |
1947 | } | |
1948 | return -ENOIOCTLCMD; | |
1949 | } | |
1950 | ||
1951 | static const struct v4l2_queryctrl sh_mobile_ceu_controls[] = { | |
1952 | { | |
1953 | .id = V4L2_CID_SHARPNESS, | |
1954 | .type = V4L2_CTRL_TYPE_BOOLEAN, | |
1955 | .name = "Low-pass filter", | |
1956 | .minimum = 0, | |
1957 | .maximum = 1, | |
1958 | .step = 1, | |
1959 | .default_value = 0, | |
1960 | }, | |
1961 | }; | |
1962 | ||
0d3244d6 MD |
1963 | static struct soc_camera_host_ops sh_mobile_ceu_host_ops = { |
1964 | .owner = THIS_MODULE, | |
1965 | .add = sh_mobile_ceu_add_device, | |
1966 | .remove = sh_mobile_ceu_remove_device, | |
9414de39 | 1967 | .get_formats = sh_mobile_ceu_get_formats, |
904078f1 | 1968 | .put_formats = sh_mobile_ceu_put_formats, |
e622681d | 1969 | .get_crop = sh_mobile_ceu_get_crop, |
09e231b3 | 1970 | .set_crop = sh_mobile_ceu_set_crop, |
3dac322d | 1971 | .set_livecrop = sh_mobile_ceu_set_livecrop, |
d8fac217 GL |
1972 | .set_fmt = sh_mobile_ceu_set_fmt, |
1973 | .try_fmt = sh_mobile_ceu_try_fmt, | |
4a6110bc GL |
1974 | .set_ctrl = sh_mobile_ceu_set_ctrl, |
1975 | .get_ctrl = sh_mobile_ceu_get_ctrl, | |
0d3244d6 MD |
1976 | .poll = sh_mobile_ceu_poll, |
1977 | .querycap = sh_mobile_ceu_querycap, | |
0d3244d6 | 1978 | .set_bus_param = sh_mobile_ceu_set_bus_param, |
a616898d | 1979 | .init_videobuf2 = sh_mobile_ceu_init_videobuf, |
4a6110bc GL |
1980 | .controls = sh_mobile_ceu_controls, |
1981 | .num_controls = ARRAY_SIZE(sh_mobile_ceu_controls), | |
0d3244d6 MD |
1982 | }; |
1983 | ||
b3b5020d GL |
1984 | struct bus_wait { |
1985 | struct notifier_block notifier; | |
1986 | struct completion completion; | |
1987 | struct device *dev; | |
1988 | }; | |
1989 | ||
1990 | static int bus_notify(struct notifier_block *nb, | |
1991 | unsigned long action, void *data) | |
1992 | { | |
1993 | struct device *dev = data; | |
1994 | struct bus_wait *wait = container_of(nb, struct bus_wait, notifier); | |
1995 | ||
1996 | if (wait->dev != dev) | |
1997 | return NOTIFY_DONE; | |
1998 | ||
1999 | switch (action) { | |
2000 | case BUS_NOTIFY_UNBOUND_DRIVER: | |
2001 | /* Protect from module unloading */ | |
2002 | wait_for_completion(&wait->completion); | |
2003 | return NOTIFY_OK; | |
2004 | } | |
2005 | return NOTIFY_DONE; | |
2006 | } | |
2007 | ||
979ea1dd | 2008 | static int __devinit sh_mobile_ceu_probe(struct platform_device *pdev) |
0d3244d6 MD |
2009 | { |
2010 | struct sh_mobile_ceu_dev *pcdev; | |
2011 | struct resource *res; | |
2012 | void __iomem *base; | |
2013 | unsigned int irq; | |
2014 | int err = 0; | |
b3b5020d GL |
2015 | struct bus_wait wait = { |
2016 | .completion = COMPLETION_INITIALIZER_ONSTACK(wait.completion), | |
2017 | .notifier.notifier_call = bus_notify, | |
2018 | }; | |
6b526fed | 2019 | struct sh_mobile_ceu_companion *csi2; |
0d3244d6 MD |
2020 | |
2021 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); | |
2022 | irq = platform_get_irq(pdev, 0); | |
b89fc2e5 | 2023 | if (!res || (int)irq <= 0) { |
0d3244d6 MD |
2024 | dev_err(&pdev->dev, "Not enough CEU platform resources.\n"); |
2025 | err = -ENODEV; | |
2026 | goto exit; | |
2027 | } | |
2028 | ||
2029 | pcdev = kzalloc(sizeof(*pcdev), GFP_KERNEL); | |
2030 | if (!pcdev) { | |
2031 | dev_err(&pdev->dev, "Could not allocate pcdev\n"); | |
2032 | err = -ENOMEM; | |
2033 | goto exit; | |
2034 | } | |
2035 | ||
0d3244d6 MD |
2036 | INIT_LIST_HEAD(&pcdev->capture); |
2037 | spin_lock_init(&pcdev->lock); | |
3dac322d | 2038 | init_completion(&pcdev->complete); |
0d3244d6 MD |
2039 | |
2040 | pcdev->pdata = pdev->dev.platform_data; | |
2041 | if (!pcdev->pdata) { | |
2042 | err = -EINVAL; | |
2043 | dev_err(&pdev->dev, "CEU platform data not set.\n"); | |
2044 | goto exit_kfree; | |
2045 | } | |
2046 | ||
eb6c8558 | 2047 | base = ioremap_nocache(res->start, resource_size(res)); |
0d3244d6 MD |
2048 | if (!base) { |
2049 | err = -ENXIO; | |
2050 | dev_err(&pdev->dev, "Unable to ioremap CEU registers.\n"); | |
2051 | goto exit_kfree; | |
2052 | } | |
2053 | ||
2054 | pcdev->irq = irq; | |
2055 | pcdev->base = base; | |
2056 | pcdev->video_limit = 0; /* only enabled if second resource exists */ | |
0d3244d6 MD |
2057 | |
2058 | res = platform_get_resource(pdev, IORESOURCE_MEM, 1); | |
2059 | if (res) { | |
2060 | err = dma_declare_coherent_memory(&pdev->dev, res->start, | |
2061 | res->start, | |
eb6c8558 | 2062 | resource_size(res), |
0d3244d6 MD |
2063 | DMA_MEMORY_MAP | |
2064 | DMA_MEMORY_EXCLUSIVE); | |
2065 | if (!err) { | |
2066 | dev_err(&pdev->dev, "Unable to declare CEU memory.\n"); | |
2067 | err = -ENXIO; | |
2068 | goto exit_iounmap; | |
2069 | } | |
2070 | ||
eb6c8558 | 2071 | pcdev->video_limit = resource_size(res); |
0d3244d6 MD |
2072 | } |
2073 | ||
2074 | /* request irq */ | |
2075 | err = request_irq(pcdev->irq, sh_mobile_ceu_irq, IRQF_DISABLED, | |
af128a10 | 2076 | dev_name(&pdev->dev), pcdev); |
0d3244d6 MD |
2077 | if (err) { |
2078 | dev_err(&pdev->dev, "Unable to register CEU interrupt.\n"); | |
2079 | goto exit_release_mem; | |
2080 | } | |
2081 | ||
6d1386c6 MD |
2082 | pm_suspend_ignore_children(&pdev->dev, true); |
2083 | pm_runtime_enable(&pdev->dev); | |
2084 | pm_runtime_resume(&pdev->dev); | |
a42b6dd6 | 2085 | |
0d3244d6 | 2086 | pcdev->ici.priv = pcdev; |
979ea1dd | 2087 | pcdev->ici.v4l2_dev.dev = &pdev->dev; |
0d3244d6 | 2088 | pcdev->ici.nr = pdev->id; |
af128a10 KS |
2089 | pcdev->ici.drv_name = dev_name(&pdev->dev); |
2090 | pcdev->ici.ops = &sh_mobile_ceu_host_ops; | |
0d3244d6 | 2091 | |
6b526fed GL |
2092 | pcdev->alloc_ctx = vb2_dma_contig_init_ctx(&pdev->dev); |
2093 | if (IS_ERR(pcdev->alloc_ctx)) { | |
2094 | err = PTR_ERR(pcdev->alloc_ctx); | |
2095 | goto exit_free_clk; | |
2096 | } | |
2097 | ||
2098 | err = soc_camera_host_register(&pcdev->ici); | |
2099 | if (err) | |
2100 | goto exit_free_ctx; | |
2101 | ||
b3b5020d | 2102 | /* CSI2 interfacing */ |
6b526fed | 2103 | csi2 = pcdev->pdata->csi2; |
b3b5020d | 2104 | if (csi2) { |
6b526fed GL |
2105 | struct platform_device *csi2_pdev = |
2106 | platform_device_alloc("sh-mobile-csi2", csi2->id); | |
2107 | struct sh_csi2_pdata *csi2_pdata = csi2->platform_data; | |
2108 | ||
2109 | if (!csi2_pdev) { | |
2110 | err = -ENOMEM; | |
2111 | goto exit_host_unregister; | |
2112 | } | |
2113 | ||
2114 | pcdev->csi2_pdev = csi2_pdev; | |
2115 | ||
2116 | err = platform_device_add_data(csi2_pdev, csi2_pdata, sizeof(*csi2_pdata)); | |
2117 | if (err < 0) | |
2118 | goto exit_pdev_put; | |
2119 | ||
2120 | csi2_pdata = csi2_pdev->dev.platform_data; | |
2121 | csi2_pdata->v4l2_dev = &pcdev->ici.v4l2_dev; | |
2122 | ||
2123 | csi2_pdev->resource = csi2->resource; | |
2124 | csi2_pdev->num_resources = csi2->num_resources; | |
2125 | ||
2126 | err = platform_device_add(csi2_pdev); | |
2127 | if (err < 0) | |
2128 | goto exit_pdev_put; | |
2129 | ||
2130 | wait.dev = &csi2_pdev->dev; | |
b3b5020d GL |
2131 | |
2132 | err = bus_register_notifier(&platform_bus_type, &wait.notifier); | |
2133 | if (err < 0) | |
6b526fed | 2134 | goto exit_pdev_unregister; |
b3b5020d GL |
2135 | |
2136 | /* | |
2137 | * From this point the driver module will not unload, until | |
2138 | * we complete the completion. | |
2139 | */ | |
2140 | ||
6b526fed | 2141 | if (!csi2_pdev->dev.driver) { |
b3b5020d GL |
2142 | complete(&wait.completion); |
2143 | /* Either too late, or probing failed */ | |
2144 | bus_unregister_notifier(&platform_bus_type, &wait.notifier); | |
2145 | err = -ENXIO; | |
6b526fed | 2146 | goto exit_pdev_unregister; |
b3b5020d GL |
2147 | } |
2148 | ||
2149 | /* | |
2150 | * The module is still loaded, in the worst case it is hanging | |
2151 | * in device release on our completion. So, _now_ dereferencing | |
2152 | * the "owner" is safe! | |
2153 | */ | |
2154 | ||
6b526fed | 2155 | err = try_module_get(csi2_pdev->dev.driver->owner); |
b3b5020d GL |
2156 | |
2157 | /* Let notifier complete, if it has been locked */ | |
2158 | complete(&wait.completion); | |
2159 | bus_unregister_notifier(&platform_bus_type, &wait.notifier); | |
2160 | if (!err) { | |
2161 | err = -ENODEV; | |
6b526fed | 2162 | goto exit_pdev_unregister; |
b3b5020d GL |
2163 | } |
2164 | } | |
2165 | ||
0d3244d6 MD |
2166 | return 0; |
2167 | ||
6b526fed GL |
2168 | exit_pdev_unregister: |
2169 | platform_device_del(pcdev->csi2_pdev); | |
2170 | exit_pdev_put: | |
2171 | pcdev->csi2_pdev->resource = NULL; | |
2172 | platform_device_put(pcdev->csi2_pdev); | |
2173 | exit_host_unregister: | |
2174 | soc_camera_host_unregister(&pcdev->ici); | |
a616898d GL |
2175 | exit_free_ctx: |
2176 | vb2_dma_contig_cleanup_ctx(pcdev->alloc_ctx); | |
055e05a0 KM |
2177 | exit_free_clk: |
2178 | pm_runtime_disable(&pdev->dev); | |
0d3244d6 MD |
2179 | free_irq(pcdev->irq, pcdev); |
2180 | exit_release_mem: | |
2181 | if (platform_get_resource(pdev, IORESOURCE_MEM, 1)) | |
2182 | dma_release_declared_memory(&pdev->dev); | |
2183 | exit_iounmap: | |
2184 | iounmap(base); | |
2185 | exit_kfree: | |
2186 | kfree(pcdev); | |
2187 | exit: | |
2188 | return err; | |
2189 | } | |
2190 | ||
979ea1dd | 2191 | static int __devexit sh_mobile_ceu_remove(struct platform_device *pdev) |
0d3244d6 | 2192 | { |
eff505fa GL |
2193 | struct soc_camera_host *soc_host = to_soc_camera_host(&pdev->dev); |
2194 | struct sh_mobile_ceu_dev *pcdev = container_of(soc_host, | |
2195 | struct sh_mobile_ceu_dev, ici); | |
6b526fed | 2196 | struct platform_device *csi2_pdev = pcdev->csi2_pdev; |
0d3244d6 | 2197 | |
eff505fa | 2198 | soc_camera_host_unregister(soc_host); |
055e05a0 | 2199 | pm_runtime_disable(&pdev->dev); |
0d3244d6 MD |
2200 | free_irq(pcdev->irq, pcdev); |
2201 | if (platform_get_resource(pdev, IORESOURCE_MEM, 1)) | |
2202 | dma_release_declared_memory(&pdev->dev); | |
2203 | iounmap(pcdev->base); | |
a616898d | 2204 | vb2_dma_contig_cleanup_ctx(pcdev->alloc_ctx); |
6b526fed GL |
2205 | if (csi2_pdev && csi2_pdev->dev.driver) { |
2206 | struct module *csi2_drv = csi2_pdev->dev.driver->owner; | |
2207 | platform_device_del(csi2_pdev); | |
2208 | csi2_pdev->resource = NULL; | |
2209 | platform_device_put(csi2_pdev); | |
2210 | module_put(csi2_drv); | |
2211 | } | |
0d3244d6 | 2212 | kfree(pcdev); |
b3b5020d | 2213 | |
0d3244d6 MD |
2214 | return 0; |
2215 | } | |
2216 | ||
6d1386c6 MD |
2217 | static int sh_mobile_ceu_runtime_nop(struct device *dev) |
2218 | { | |
2219 | /* Runtime PM callback shared between ->runtime_suspend() | |
2220 | * and ->runtime_resume(). Simply returns success. | |
2221 | * | |
2222 | * This driver re-initializes all registers after | |
2223 | * pm_runtime_get_sync() anyway so there is no need | |
2224 | * to save and restore registers here. | |
2225 | */ | |
2226 | return 0; | |
2227 | } | |
2228 | ||
47145210 | 2229 | static const struct dev_pm_ops sh_mobile_ceu_dev_pm_ops = { |
6d1386c6 MD |
2230 | .runtime_suspend = sh_mobile_ceu_runtime_nop, |
2231 | .runtime_resume = sh_mobile_ceu_runtime_nop, | |
2232 | }; | |
2233 | ||
0d3244d6 MD |
2234 | static struct platform_driver sh_mobile_ceu_driver = { |
2235 | .driver = { | |
2236 | .name = "sh_mobile_ceu", | |
6d1386c6 | 2237 | .pm = &sh_mobile_ceu_dev_pm_ops, |
0d3244d6 MD |
2238 | }, |
2239 | .probe = sh_mobile_ceu_probe, | |
50e55fd1 | 2240 | .remove = __devexit_p(sh_mobile_ceu_remove), |
0d3244d6 MD |
2241 | }; |
2242 | ||
2243 | static int __init sh_mobile_ceu_init(void) | |
2244 | { | |
b3b5020d GL |
2245 | /* Whatever return code */ |
2246 | request_module("sh_mobile_csi2"); | |
0d3244d6 MD |
2247 | return platform_driver_register(&sh_mobile_ceu_driver); |
2248 | } | |
2249 | ||
2250 | static void __exit sh_mobile_ceu_exit(void) | |
2251 | { | |
01c1e4ca | 2252 | platform_driver_unregister(&sh_mobile_ceu_driver); |
0d3244d6 MD |
2253 | } |
2254 | ||
2255 | module_init(sh_mobile_ceu_init); | |
2256 | module_exit(sh_mobile_ceu_exit); | |
2257 | ||
2258 | MODULE_DESCRIPTION("SuperH Mobile CEU driver"); | |
2259 | MODULE_AUTHOR("Magnus Damm"); | |
2260 | MODULE_LICENSE("GPL"); | |
64dc3c1a | 2261 | MODULE_VERSION("0.0.6"); |
40e2e092 | 2262 | MODULE_ALIAS("platform:sh_mobile_ceu"); |