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 { | |
e622681d GL |
124 | /* CEU offsets within scaled by the CEU camera output */ |
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 | ||
c354b400 KM |
147 | static unsigned long make_bus_param(struct sh_mobile_ceu_dev *pcdev) |
148 | { | |
149 | unsigned long flags; | |
150 | ||
151 | flags = SOCAM_MASTER | | |
152 | SOCAM_PCLK_SAMPLE_RISING | | |
153 | SOCAM_HSYNC_ACTIVE_HIGH | | |
154 | SOCAM_HSYNC_ACTIVE_LOW | | |
155 | SOCAM_VSYNC_ACTIVE_HIGH | | |
156 | SOCAM_VSYNC_ACTIVE_LOW | | |
157 | SOCAM_DATA_ACTIVE_HIGH; | |
158 | ||
159 | if (pcdev->pdata->flags & SH_CEU_FLAG_USE_8BIT_BUS) | |
160 | flags |= SOCAM_DATAWIDTH_8; | |
161 | ||
162 | if (pcdev->pdata->flags & SH_CEU_FLAG_USE_16BIT_BUS) | |
163 | flags |= SOCAM_DATAWIDTH_16; | |
164 | ||
165 | if (flags & SOCAM_DATAWIDTH_MASK) | |
166 | return flags; | |
167 | ||
168 | return 0; | |
169 | } | |
170 | ||
0d3244d6 | 171 | static void ceu_write(struct sh_mobile_ceu_dev *priv, |
7a1a8164 | 172 | unsigned long reg_offs, u32 data) |
0d3244d6 MD |
173 | { |
174 | iowrite32(data, priv->base + reg_offs); | |
175 | } | |
176 | ||
7a1a8164 | 177 | static u32 ceu_read(struct sh_mobile_ceu_dev *priv, unsigned long reg_offs) |
0d3244d6 MD |
178 | { |
179 | return ioread32(priv->base + reg_offs); | |
180 | } | |
181 | ||
b1de7aeb KM |
182 | static int sh_mobile_ceu_soft_reset(struct sh_mobile_ceu_dev *pcdev) |
183 | { | |
184 | int i, success = 0; | |
185 | struct soc_camera_device *icd = pcdev->icd; | |
186 | ||
187 | ceu_write(pcdev, CAPSR, 1 << 16); /* reset */ | |
188 | ||
189 | /* wait CSTSR.CPTON bit */ | |
190 | for (i = 0; i < 1000; i++) { | |
191 | if (!(ceu_read(pcdev, CSTSR) & 1)) { | |
192 | success++; | |
193 | break; | |
194 | } | |
195 | udelay(1); | |
196 | } | |
197 | ||
198 | /* wait CAPSR.CPKIL bit */ | |
199 | for (i = 0; i < 1000; i++) { | |
200 | if (!(ceu_read(pcdev, CAPSR) & (1 << 16))) { | |
201 | success++; | |
202 | break; | |
203 | } | |
204 | udelay(1); | |
205 | } | |
206 | ||
207 | ||
208 | if (2 != success) { | |
7dfff953 | 209 | dev_warn(icd->pdev, "soft reset time out\n"); |
b1de7aeb KM |
210 | return -EIO; |
211 | } | |
212 | ||
213 | return 0; | |
214 | } | |
215 | ||
0d3244d6 MD |
216 | /* |
217 | * Videobuf operations | |
218 | */ | |
a616898d GL |
219 | static int sh_mobile_ceu_videobuf_setup(struct vb2_queue *vq, |
220 | unsigned int *count, unsigned int *num_planes, | |
035aa147 | 221 | unsigned int sizes[], void *alloc_ctxs[]) |
0d3244d6 | 222 | { |
a616898d | 223 | struct soc_camera_device *icd = container_of(vq, struct soc_camera_device, vb2_vidq); |
7dfff953 | 224 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
0d3244d6 | 225 | struct sh_mobile_ceu_dev *pcdev = ici->priv; |
760697be GL |
226 | int bytes_per_line = soc_mbus_bytes_per_line(icd->user_width, |
227 | icd->current_fmt->host_fmt); | |
0d3244d6 | 228 | |
760697be GL |
229 | if (bytes_per_line < 0) |
230 | return bytes_per_line; | |
231 | ||
a616898d GL |
232 | *num_planes = 1; |
233 | ||
234 | pcdev->sequence = 0; | |
235 | sizes[0] = bytes_per_line * icd->user_height; | |
236 | alloc_ctxs[0] = pcdev->alloc_ctx; | |
0d3244d6 | 237 | |
a616898d | 238 | if (!*count) |
0d3244d6 MD |
239 | *count = 2; |
240 | ||
241 | if (pcdev->video_limit) { | |
a616898d GL |
242 | if (PAGE_ALIGN(sizes[0]) * *count > pcdev->video_limit) |
243 | *count = pcdev->video_limit / PAGE_ALIGN(sizes[0]); | |
0d3244d6 MD |
244 | } |
245 | ||
035aa147 | 246 | dev_dbg(icd->parent, "count=%d, size=%u\n", *count, sizes[0]); |
0d3244d6 MD |
247 | |
248 | return 0; | |
249 | } | |
250 | ||
7a1a8164 MD |
251 | #define CEU_CETCR_MAGIC 0x0317f313 /* acknowledge magical interrupt sources */ |
252 | #define CEU_CETCR_IGRW (1 << 4) /* prohibited register access interrupt bit */ | |
253 | #define CEU_CEIER_CPEIE (1 << 0) /* one-frame capture end interrupt */ | |
5cf93f1d | 254 | #define CEU_CEIER_VBP (1 << 20) /* vbp error */ |
7a1a8164 | 255 | #define CEU_CAPCR_CTNCP (1 << 16) /* continuous capture mode (if set) */ |
5cf93f1d | 256 | #define CEU_CEIER_MASK (CEU_CEIER_CPEIE | CEU_CEIER_VBP) |
7a1a8164 MD |
257 | |
258 | ||
5cf93f1d KM |
259 | /* |
260 | * return value doesn't reflex the success/failure to queue the new buffer, | |
261 | * but rather the status of the previous buffer. | |
262 | */ | |
263 | static int sh_mobile_ceu_capture(struct sh_mobile_ceu_dev *pcdev) | |
0d3244d6 | 264 | { |
8be65dc5 | 265 | struct soc_camera_device *icd = pcdev->icd; |
ccab8a29 | 266 | dma_addr_t phys_addr_top, phys_addr_bottom; |
1edcc10d KM |
267 | unsigned long top1, top2; |
268 | unsigned long bottom1, bottom2; | |
5cf93f1d KM |
269 | u32 status; |
270 | int ret = 0; | |
7a1a8164 | 271 | |
5d28d525 GL |
272 | /* |
273 | * The hardware is _very_ picky about this sequence. Especially | |
7a1a8164 MD |
274 | * the CEU_CETCR_MAGIC value. It seems like we need to acknowledge |
275 | * several not-so-well documented interrupt sources in CETCR. | |
276 | */ | |
5cf93f1d KM |
277 | ceu_write(pcdev, CEIER, ceu_read(pcdev, CEIER) & ~CEU_CEIER_MASK); |
278 | status = ceu_read(pcdev, CETCR); | |
279 | ceu_write(pcdev, CETCR, ~status & CEU_CETCR_MAGIC); | |
3dac322d GL |
280 | if (!pcdev->frozen) |
281 | ceu_write(pcdev, CEIER, ceu_read(pcdev, CEIER) | CEU_CEIER_MASK); | |
7a1a8164 MD |
282 | ceu_write(pcdev, CAPCR, ceu_read(pcdev, CAPCR) & ~CEU_CAPCR_CTNCP); |
283 | ceu_write(pcdev, CETCR, CEU_CETCR_MAGIC ^ CEU_CETCR_IGRW); | |
0d3244d6 | 284 | |
5cf93f1d KM |
285 | /* |
286 | * When a VBP interrupt occurs, a capture end interrupt does not occur | |
287 | * and the image of that frame is not captured correctly. So, soft reset | |
288 | * is needed here. | |
289 | */ | |
290 | if (status & CEU_CEIER_VBP) { | |
291 | sh_mobile_ceu_soft_reset(pcdev); | |
292 | ret = -EIO; | |
293 | } | |
294 | ||
3dac322d GL |
295 | if (pcdev->frozen) { |
296 | complete(&pcdev->complete); | |
297 | return ret; | |
298 | } | |
299 | ||
8be65dc5 | 300 | if (!pcdev->active) |
5cf93f1d | 301 | return ret; |
8be65dc5 | 302 | |
1edcc10d KM |
303 | if (V4L2_FIELD_INTERLACED_BT == pcdev->field) { |
304 | top1 = CDBYR; | |
305 | top2 = CDBCR; | |
306 | bottom1 = CDAYR; | |
307 | bottom2 = CDACR; | |
308 | } else { | |
309 | top1 = CDAYR; | |
310 | top2 = CDACR; | |
311 | bottom1 = CDBYR; | |
312 | bottom2 = CDBCR; | |
313 | } | |
314 | ||
d6db5bfe | 315 | phys_addr_top = vb2_dma_contig_plane_paddr(pcdev->active, 0); |
a616898d | 316 | |
1edcc10d KM |
317 | ceu_write(pcdev, top1, phys_addr_top); |
318 | if (V4L2_FIELD_NONE != pcdev->field) { | |
6a6c8786 | 319 | phys_addr_bottom = phys_addr_top + icd->user_width; |
1edcc10d | 320 | ceu_write(pcdev, bottom1, phys_addr_bottom); |
ccab8a29 | 321 | } |
8be65dc5 | 322 | |
760697be | 323 | switch (icd->current_fmt->host_fmt->fourcc) { |
8be65dc5 MD |
324 | case V4L2_PIX_FMT_NV12: |
325 | case V4L2_PIX_FMT_NV21: | |
9e4a56d2 MD |
326 | case V4L2_PIX_FMT_NV16: |
327 | case V4L2_PIX_FMT_NV61: | |
6a6c8786 GL |
328 | phys_addr_top += icd->user_width * |
329 | icd->user_height; | |
1edcc10d KM |
330 | ceu_write(pcdev, top2, phys_addr_top); |
331 | if (V4L2_FIELD_NONE != pcdev->field) { | |
332 | phys_addr_bottom = phys_addr_top + icd->user_width; | |
333 | ceu_write(pcdev, bottom2, phys_addr_bottom); | |
ccab8a29 | 334 | } |
0d3244d6 | 335 | } |
8be65dc5 | 336 | |
8be65dc5 | 337 | ceu_write(pcdev, CAPSR, 0x1); /* start capture */ |
5cf93f1d KM |
338 | |
339 | return ret; | |
0d3244d6 MD |
340 | } |
341 | ||
a616898d | 342 | static int sh_mobile_ceu_videobuf_prepare(struct vb2_buffer *vb) |
0d3244d6 | 343 | { |
a616898d | 344 | struct soc_camera_device *icd = container_of(vb->vb2_queue, struct soc_camera_device, vb2_vidq); |
0d3244d6 | 345 | struct sh_mobile_ceu_buffer *buf; |
760697be GL |
346 | int bytes_per_line = soc_mbus_bytes_per_line(icd->user_width, |
347 | icd->current_fmt->host_fmt); | |
a616898d | 348 | unsigned long size; |
0d3244d6 | 349 | |
760697be GL |
350 | if (bytes_per_line < 0) |
351 | return bytes_per_line; | |
352 | ||
a616898d | 353 | buf = to_ceu_vb(vb); |
0d3244d6 | 354 | |
7dfff953 | 355 | dev_dbg(icd->parent, "%s (vb=0x%p) 0x%p %lu\n", __func__, |
a616898d | 356 | vb, vb2_plane_vaddr(vb, 0), vb2_get_plane_payload(vb, 0)); |
0d3244d6 MD |
357 | |
358 | /* Added list head initialization on alloc */ | |
a616898d | 359 | WARN(!list_empty(&buf->queue), "Buffer %p on queue!\n", vb); |
0d3244d6 MD |
360 | |
361 | #ifdef DEBUG | |
5d28d525 GL |
362 | /* |
363 | * This can be useful if you want to see if we actually fill | |
364 | * the buffer with something | |
365 | */ | |
a616898d GL |
366 | if (vb2_plane_vaddr(vb, 0)) |
367 | memset(vb2_plane_vaddr(vb, 0), 0xaa, vb2_get_plane_payload(vb, 0)); | |
0d3244d6 MD |
368 | #endif |
369 | ||
370 | BUG_ON(NULL == icd->current_fmt); | |
371 | ||
a616898d | 372 | size = icd->user_height * bytes_per_line; |
0d3244d6 | 373 | |
a616898d | 374 | if (vb2_plane_size(vb, 0) < size) { |
7dfff953 | 375 | dev_err(icd->parent, "Buffer too small (%lu < %lu)\n", |
a616898d GL |
376 | vb2_plane_size(vb, 0), size); |
377 | return -ENOBUFS; | |
0d3244d6 MD |
378 | } |
379 | ||
a616898d | 380 | vb2_set_plane_payload(vb, 0, size); |
0d3244d6 MD |
381 | |
382 | return 0; | |
0d3244d6 MD |
383 | } |
384 | ||
a616898d | 385 | static void sh_mobile_ceu_videobuf_queue(struct vb2_buffer *vb) |
0d3244d6 | 386 | { |
a616898d | 387 | struct soc_camera_device *icd = container_of(vb->vb2_queue, struct soc_camera_device, vb2_vidq); |
7dfff953 | 388 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
0d3244d6 | 389 | struct sh_mobile_ceu_dev *pcdev = ici->priv; |
a616898d | 390 | struct sh_mobile_ceu_buffer *buf = to_ceu_vb(vb); |
0d3244d6 | 391 | |
7dfff953 | 392 | dev_dbg(icd->parent, "%s (vb=0x%p) 0x%p %lu\n", __func__, |
a616898d | 393 | vb, vb2_plane_vaddr(vb, 0), vb2_get_plane_payload(vb, 0)); |
0d3244d6 | 394 | |
3dac322d | 395 | spin_lock_irq(&pcdev->lock); |
a616898d | 396 | list_add_tail(&buf->queue, &pcdev->capture); |
0d3244d6 MD |
397 | |
398 | if (!pcdev->active) { | |
5cf93f1d KM |
399 | /* |
400 | * Because there were no active buffer at this moment, | |
401 | * we are not interested in the return value of | |
402 | * sh_mobile_ceu_capture here. | |
403 | */ | |
0d3244d6 MD |
404 | pcdev->active = vb; |
405 | sh_mobile_ceu_capture(pcdev); | |
406 | } | |
3dac322d | 407 | spin_unlock_irq(&pcdev->lock); |
0d3244d6 MD |
408 | } |
409 | ||
a616898d | 410 | static void sh_mobile_ceu_videobuf_release(struct vb2_buffer *vb) |
0d3244d6 | 411 | { |
a616898d | 412 | struct soc_camera_device *icd = container_of(vb->vb2_queue, struct soc_camera_device, vb2_vidq); |
7dfff953 | 413 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
a616898d | 414 | struct sh_mobile_ceu_buffer *buf = to_ceu_vb(vb); |
cca0e549 | 415 | struct sh_mobile_ceu_dev *pcdev = ici->priv; |
cca0e549 | 416 | |
3dac322d | 417 | spin_lock_irq(&pcdev->lock); |
cca0e549 GL |
418 | |
419 | if (pcdev->active == vb) { | |
420 | /* disable capture (release DMA buffer), reset */ | |
421 | ceu_write(pcdev, CAPSR, 1 << 16); | |
422 | pcdev->active = NULL; | |
423 | } | |
424 | ||
cb74cf53 GL |
425 | /* |
426 | * Doesn't hurt also if the list is empty, but it hurts, if queuing the | |
427 | * buffer failed, and .buf_init() hasn't been called | |
428 | */ | |
429 | if (buf->queue.next) | |
430 | list_del_init(&buf->queue); | |
cca0e549 | 431 | |
3dac322d | 432 | spin_unlock_irq(&pcdev->lock); |
a616898d | 433 | } |
cca0e549 | 434 | |
a616898d GL |
435 | static int sh_mobile_ceu_videobuf_init(struct vb2_buffer *vb) |
436 | { | |
437 | /* This is for locking debugging only */ | |
438 | INIT_LIST_HEAD(&to_ceu_vb(vb)->queue); | |
439 | return 0; | |
0d3244d6 MD |
440 | } |
441 | ||
066f7867 GL |
442 | static int sh_mobile_ceu_stop_streaming(struct vb2_queue *q) |
443 | { | |
444 | struct soc_camera_device *icd = container_of(q, struct soc_camera_device, vb2_vidq); | |
7dfff953 | 445 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
066f7867 GL |
446 | struct sh_mobile_ceu_dev *pcdev = ici->priv; |
447 | struct list_head *buf_head, *tmp; | |
066f7867 | 448 | |
3dac322d | 449 | spin_lock_irq(&pcdev->lock); |
066f7867 GL |
450 | |
451 | pcdev->active = NULL; | |
452 | ||
453 | list_for_each_safe(buf_head, tmp, &pcdev->capture) | |
454 | list_del_init(buf_head); | |
455 | ||
3dac322d | 456 | spin_unlock_irq(&pcdev->lock); |
066f7867 GL |
457 | |
458 | return sh_mobile_ceu_soft_reset(pcdev); | |
459 | } | |
460 | ||
a616898d GL |
461 | static struct vb2_ops sh_mobile_ceu_videobuf_ops = { |
462 | .queue_setup = sh_mobile_ceu_videobuf_setup, | |
463 | .buf_prepare = sh_mobile_ceu_videobuf_prepare, | |
464 | .buf_queue = sh_mobile_ceu_videobuf_queue, | |
465 | .buf_cleanup = sh_mobile_ceu_videobuf_release, | |
466 | .buf_init = sh_mobile_ceu_videobuf_init, | |
467 | .wait_prepare = soc_camera_unlock, | |
468 | .wait_finish = soc_camera_lock, | |
066f7867 | 469 | .stop_streaming = sh_mobile_ceu_stop_streaming, |
0d3244d6 MD |
470 | }; |
471 | ||
472 | static irqreturn_t sh_mobile_ceu_irq(int irq, void *data) | |
473 | { | |
474 | struct sh_mobile_ceu_dev *pcdev = data; | |
a616898d GL |
475 | struct vb2_buffer *vb; |
476 | int ret; | |
0d3244d6 | 477 | |
a616898d | 478 | spin_lock(&pcdev->lock); |
0d3244d6 MD |
479 | |
480 | vb = pcdev->active; | |
cca0e549 GL |
481 | if (!vb) |
482 | /* Stale interrupt from a released buffer */ | |
483 | goto out; | |
484 | ||
a616898d | 485 | list_del_init(&to_ceu_vb(vb)->queue); |
0d3244d6 MD |
486 | |
487 | if (!list_empty(&pcdev->capture)) | |
a616898d GL |
488 | pcdev->active = &list_entry(pcdev->capture.next, |
489 | struct sh_mobile_ceu_buffer, queue)->vb; | |
0d3244d6 MD |
490 | else |
491 | pcdev->active = NULL; | |
492 | ||
a616898d GL |
493 | ret = sh_mobile_ceu_capture(pcdev); |
494 | do_gettimeofday(&vb->v4l2_buf.timestamp); | |
495 | if (!ret) { | |
496 | vb->v4l2_buf.field = pcdev->field; | |
497 | vb->v4l2_buf.sequence = pcdev->sequence++; | |
498 | } | |
499 | vb2_buffer_done(vb, ret < 0 ? VB2_BUF_STATE_ERROR : VB2_BUF_STATE_DONE); | |
cca0e549 GL |
500 | |
501 | out: | |
a616898d | 502 | spin_unlock(&pcdev->lock); |
0d3244d6 MD |
503 | |
504 | return IRQ_HANDLED; | |
505 | } | |
506 | ||
6b526fed GL |
507 | static struct v4l2_subdev *find_csi2(struct sh_mobile_ceu_dev *pcdev) |
508 | { | |
509 | struct v4l2_subdev *sd; | |
510 | ||
511 | if (!pcdev->csi2_pdev) | |
512 | return NULL; | |
513 | ||
514 | v4l2_device_for_each_subdev(sd, &pcdev->ici.v4l2_dev) | |
515 | if (&pcdev->csi2_pdev->dev == v4l2_get_subdevdata(sd)) | |
516 | return sd; | |
517 | ||
518 | return NULL; | |
519 | } | |
520 | ||
1c3bb743 | 521 | /* Called with .video_lock held */ |
0d3244d6 MD |
522 | static int sh_mobile_ceu_add_device(struct soc_camera_device *icd) |
523 | { | |
7dfff953 | 524 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
0d3244d6 | 525 | struct sh_mobile_ceu_dev *pcdev = ici->priv; |
6b526fed | 526 | struct v4l2_subdev *csi2_sd; |
6ed7c038 | 527 | int ret; |
0d3244d6 | 528 | |
0d3244d6 | 529 | if (pcdev->icd) |
979ea1dd | 530 | return -EBUSY; |
0d3244d6 | 531 | |
7dfff953 | 532 | dev_info(icd->parent, |
0d3244d6 MD |
533 | "SuperH Mobile CEU driver attached to camera %d\n", |
534 | icd->devnum); | |
535 | ||
a79aebfc | 536 | pm_runtime_get_sync(ici->v4l2_dev.dev); |
40e2e092 | 537 | |
6ed7c038 | 538 | ret = sh_mobile_ceu_soft_reset(pcdev); |
6b526fed GL |
539 | |
540 | csi2_sd = find_csi2(pcdev); | |
541 | ||
542 | ret = v4l2_subdev_call(csi2_sd, core, s_power, 1); | |
543 | if (ret != -ENODEV && ret != -ENOIOCTLCMD && ret < 0) { | |
544 | pm_runtime_put_sync(ici->v4l2_dev.dev); | |
545 | } else { | |
6ed7c038 | 546 | pcdev->icd = icd; |
6b526fed GL |
547 | ret = 0; |
548 | } | |
979ea1dd | 549 | |
6ed7c038 | 550 | return ret; |
0d3244d6 MD |
551 | } |
552 | ||
1c3bb743 | 553 | /* Called with .video_lock held */ |
0d3244d6 MD |
554 | static void sh_mobile_ceu_remove_device(struct soc_camera_device *icd) |
555 | { | |
7dfff953 | 556 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
0d3244d6 | 557 | struct sh_mobile_ceu_dev *pcdev = ici->priv; |
6b526fed | 558 | struct v4l2_subdev *csi2_sd = find_csi2(pcdev); |
0d3244d6 MD |
559 | |
560 | BUG_ON(icd != pcdev->icd); | |
561 | ||
6b526fed | 562 | v4l2_subdev_call(csi2_sd, core, s_power, 0); |
0d3244d6 MD |
563 | /* disable capture, disable interrupts */ |
564 | ceu_write(pcdev, CEIER, 0); | |
b1de7aeb | 565 | sh_mobile_ceu_soft_reset(pcdev); |
51354cc3 MD |
566 | |
567 | /* make sure active buffer is canceled */ | |
3dac322d | 568 | spin_lock_irq(&pcdev->lock); |
51354cc3 | 569 | if (pcdev->active) { |
a616898d GL |
570 | list_del_init(&to_ceu_vb(pcdev->active)->queue); |
571 | vb2_buffer_done(pcdev->active, VB2_BUF_STATE_ERROR); | |
51354cc3 MD |
572 | pcdev->active = NULL; |
573 | } | |
3dac322d | 574 | spin_unlock_irq(&pcdev->lock); |
51354cc3 | 575 | |
a79aebfc | 576 | pm_runtime_put_sync(ici->v4l2_dev.dev); |
40e2e092 | 577 | |
7dfff953 | 578 | dev_info(icd->parent, |
0d3244d6 MD |
579 | "SuperH Mobile CEU driver detached from camera %d\n", |
580 | icd->devnum); | |
581 | ||
582 | pcdev->icd = NULL; | |
583 | } | |
584 | ||
961801bb GL |
585 | /* |
586 | * See chapter 29.4.12 "Capture Filter Control Register (CFLCR)" | |
587 | * in SH7722 Hardware Manual | |
588 | */ | |
589 | static unsigned int size_dst(unsigned int src, unsigned int scale) | |
590 | { | |
591 | unsigned int mant_pre = scale >> 12; | |
592 | if (!src || !scale) | |
593 | return src; | |
594 | return ((mant_pre + 2 * (src - 1)) / (2 * mant_pre) - 1) * | |
595 | mant_pre * 4096 / scale + 1; | |
596 | } | |
597 | ||
961801bb GL |
598 | static u16 calc_scale(unsigned int src, unsigned int *dst) |
599 | { | |
600 | u16 scale; | |
601 | ||
602 | if (src == *dst) | |
603 | return 0; | |
604 | ||
605 | scale = (src * 4096 / *dst) & ~7; | |
606 | ||
607 | while (scale > 4096 && size_dst(src, scale) < *dst) | |
608 | scale -= 8; | |
609 | ||
610 | *dst = size_dst(src, scale); | |
611 | ||
612 | return scale; | |
613 | } | |
614 | ||
615 | /* rect is guaranteed to not exceed the scaled camera rectangle */ | |
e622681d | 616 | static void sh_mobile_ceu_set_rect(struct soc_camera_device *icd) |
904078f1 | 617 | { |
7dfff953 | 618 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
904078f1 GL |
619 | struct sh_mobile_ceu_cam *cam = icd->host_priv; |
620 | struct sh_mobile_ceu_dev *pcdev = ici->priv; | |
6a6c8786 GL |
621 | unsigned int height, width, cdwdr_width, in_width, in_height; |
622 | unsigned int left_offset, top_offset; | |
904078f1 GL |
623 | u32 camor; |
624 | ||
7dfff953 | 625 | dev_geo(icd->parent, "Crop %ux%u@%u:%u\n", |
e622681d | 626 | icd->user_width, icd->user_height, cam->ceu_left, cam->ceu_top); |
904078f1 | 627 | |
e622681d GL |
628 | left_offset = cam->ceu_left; |
629 | top_offset = cam->ceu_top; | |
904078f1 | 630 | |
e622681d | 631 | /* CEU cropping (CFSZR) is applied _after_ the scaling filter (CFLCR) */ |
904078f1 | 632 | if (pcdev->image_mode) { |
e622681d | 633 | in_width = cam->width; |
961801bb | 634 | if (!pcdev->is_16bit) { |
961801bb GL |
635 | in_width *= 2; |
636 | left_offset *= 2; | |
637 | } | |
e622681d GL |
638 | width = icd->user_width; |
639 | cdwdr_width = icd->user_width; | |
904078f1 | 640 | } else { |
e622681d | 641 | int bytes_per_line = soc_mbus_bytes_per_line(icd->user_width, |
760697be GL |
642 | icd->current_fmt->host_fmt); |
643 | unsigned int w_factor; | |
6a6c8786 | 644 | |
e622681d | 645 | width = icd->user_width; |
6a6c8786 | 646 | |
760697be GL |
647 | switch (icd->current_fmt->host_fmt->packing) { |
648 | case SOC_MBUS_PACKING_2X8_PADHI: | |
649 | w_factor = 2; | |
650 | break; | |
651 | default: | |
652 | w_factor = 1; | |
653 | } | |
961801bb | 654 | |
e622681d | 655 | in_width = cam->width * w_factor; |
760697be | 656 | left_offset = left_offset * w_factor; |
961801bb | 657 | |
760697be | 658 | if (bytes_per_line < 0) |
e622681d | 659 | cdwdr_width = icd->user_width; |
760697be GL |
660 | else |
661 | cdwdr_width = bytes_per_line; | |
904078f1 GL |
662 | } |
663 | ||
e622681d GL |
664 | height = icd->user_height; |
665 | in_height = cam->height; | |
1edcc10d | 666 | if (V4L2_FIELD_NONE != pcdev->field) { |
904078f1 | 667 | height /= 2; |
961801bb GL |
668 | in_height /= 2; |
669 | top_offset /= 2; | |
904078f1 GL |
670 | cdwdr_width *= 2; |
671 | } | |
672 | ||
b3b5020d | 673 | /* CSI2 special configuration */ |
6b526fed | 674 | if (pcdev->pdata->csi2) { |
b3b5020d GL |
675 | in_width = ((in_width - 2) * 2); |
676 | left_offset *= 2; | |
677 | } | |
678 | ||
6a6c8786 | 679 | /* Set CAMOR, CAPWR, CFSZR, take care of CDWDR */ |
904078f1 | 680 | camor = left_offset | (top_offset << 16); |
6a6c8786 | 681 | |
7dfff953 | 682 | dev_geo(icd->parent, |
6a6c8786 GL |
683 | "CAMOR 0x%x, CAPWR 0x%x, CFSZR 0x%x, CDWDR 0x%x\n", camor, |
684 | (in_height << 16) | in_width, (height << 16) | width, | |
685 | cdwdr_width); | |
686 | ||
904078f1 | 687 | ceu_write(pcdev, CAMOR, camor); |
961801bb | 688 | ceu_write(pcdev, CAPWR, (in_height << 16) | in_width); |
6a6c8786 | 689 | ceu_write(pcdev, CFSZR, (height << 16) | width); |
904078f1 GL |
690 | ceu_write(pcdev, CDWDR, cdwdr_width); |
691 | } | |
692 | ||
693 | static u32 capture_save_reset(struct sh_mobile_ceu_dev *pcdev) | |
694 | { | |
695 | u32 capsr = ceu_read(pcdev, CAPSR); | |
696 | ceu_write(pcdev, CAPSR, 1 << 16); /* reset, stop capture */ | |
697 | return capsr; | |
698 | } | |
699 | ||
700 | static void capture_restore(struct sh_mobile_ceu_dev *pcdev, u32 capsr) | |
701 | { | |
702 | unsigned long timeout = jiffies + 10 * HZ; | |
703 | ||
704 | /* | |
705 | * Wait until the end of the current frame. It can take a long time, | |
706 | * but if it has been aborted by a CAPSR reset, it shoule exit sooner. | |
707 | */ | |
708 | while ((ceu_read(pcdev, CSTSR) & 1) && time_before(jiffies, timeout)) | |
709 | msleep(1); | |
710 | ||
711 | if (time_after(jiffies, timeout)) { | |
712 | dev_err(pcdev->ici.v4l2_dev.dev, | |
713 | "Timeout waiting for frame end! Interface problem?\n"); | |
714 | return; | |
715 | } | |
716 | ||
717 | /* Wait until reset clears, this shall not hang... */ | |
718 | while (ceu_read(pcdev, CAPSR) & (1 << 16)) | |
719 | udelay(10); | |
720 | ||
721 | /* Anything to restore? */ | |
722 | if (capsr & ~(1 << 16)) | |
723 | ceu_write(pcdev, CAPSR, capsr); | |
724 | } | |
725 | ||
a616898d | 726 | /* Capture is not running, no interrupts, no locking needed */ |
0d3244d6 MD |
727 | static int sh_mobile_ceu_set_bus_param(struct soc_camera_device *icd, |
728 | __u32 pixfmt) | |
729 | { | |
7dfff953 | 730 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
0d3244d6 | 731 | struct sh_mobile_ceu_dev *pcdev = ici->priv; |
904078f1 | 732 | int ret; |
0d3244d6 | 733 | unsigned long camera_flags, common_flags, value; |
904078f1 GL |
734 | int yuv_lineskip; |
735 | struct sh_mobile_ceu_cam *cam = icd->host_priv; | |
736 | u32 capsr = capture_save_reset(pcdev); | |
0d3244d6 MD |
737 | |
738 | camera_flags = icd->ops->query_bus_param(icd); | |
739 | common_flags = soc_camera_bus_param_compatible(camera_flags, | |
c354b400 | 740 | make_bus_param(pcdev)); |
0d3244d6 MD |
741 | if (!common_flags) |
742 | return -EINVAL; | |
743 | ||
85dc1cff KM |
744 | /* Make choises, based on platform preferences */ |
745 | if ((common_flags & SOCAM_HSYNC_ACTIVE_HIGH) && | |
746 | (common_flags & SOCAM_HSYNC_ACTIVE_LOW)) { | |
747 | if (pcdev->pdata->flags & SH_CEU_FLAG_HSYNC_LOW) | |
748 | common_flags &= ~SOCAM_HSYNC_ACTIVE_HIGH; | |
749 | else | |
750 | common_flags &= ~SOCAM_HSYNC_ACTIVE_LOW; | |
751 | } | |
752 | ||
753 | if ((common_flags & SOCAM_VSYNC_ACTIVE_HIGH) && | |
754 | (common_flags & SOCAM_VSYNC_ACTIVE_LOW)) { | |
755 | if (pcdev->pdata->flags & SH_CEU_FLAG_VSYNC_LOW) | |
756 | common_flags &= ~SOCAM_VSYNC_ACTIVE_HIGH; | |
757 | else | |
758 | common_flags &= ~SOCAM_VSYNC_ACTIVE_LOW; | |
759 | } | |
760 | ||
0d3244d6 MD |
761 | ret = icd->ops->set_bus_param(icd, common_flags); |
762 | if (ret < 0) | |
763 | return ret; | |
764 | ||
765 | switch (common_flags & SOCAM_DATAWIDTH_MASK) { | |
766 | case SOCAM_DATAWIDTH_8: | |
904078f1 | 767 | pcdev->is_16bit = 0; |
0d3244d6 MD |
768 | break; |
769 | case SOCAM_DATAWIDTH_16: | |
904078f1 | 770 | pcdev->is_16bit = 1; |
0d3244d6 MD |
771 | break; |
772 | default: | |
773 | return -EINVAL; | |
774 | } | |
775 | ||
776 | ceu_write(pcdev, CRCNTR, 0); | |
777 | ceu_write(pcdev, CRCMPR, 0); | |
778 | ||
8be65dc5 | 779 | value = 0x00000010; /* data fetch by default */ |
961801bb | 780 | yuv_lineskip = 0; |
8be65dc5 | 781 | |
760697be | 782 | switch (icd->current_fmt->host_fmt->fourcc) { |
8be65dc5 MD |
783 | case V4L2_PIX_FMT_NV12: |
784 | case V4L2_PIX_FMT_NV21: | |
785 | yuv_lineskip = 1; /* skip for NV12/21, no skip for NV16/61 */ | |
9e4a56d2 MD |
786 | /* fall-through */ |
787 | case V4L2_PIX_FMT_NV16: | |
788 | case V4L2_PIX_FMT_NV61: | |
760697be | 789 | switch (cam->code) { |
ace6e979 | 790 | case V4L2_MBUS_FMT_UYVY8_2X8: |
8be65dc5 MD |
791 | value = 0x00000000; /* Cb0, Y0, Cr0, Y1 */ |
792 | break; | |
ace6e979 | 793 | case V4L2_MBUS_FMT_VYUY8_2X8: |
8be65dc5 MD |
794 | value = 0x00000100; /* Cr0, Y0, Cb0, Y1 */ |
795 | break; | |
ace6e979 | 796 | case V4L2_MBUS_FMT_YUYV8_2X8: |
8be65dc5 MD |
797 | value = 0x00000200; /* Y0, Cb0, Y1, Cr0 */ |
798 | break; | |
ace6e979 | 799 | case V4L2_MBUS_FMT_YVYU8_2X8: |
8be65dc5 MD |
800 | value = 0x00000300; /* Y0, Cr0, Y1, Cb0 */ |
801 | break; | |
802 | default: | |
803 | BUG(); | |
804 | } | |
805 | } | |
806 | ||
760697be GL |
807 | if (icd->current_fmt->host_fmt->fourcc == V4L2_PIX_FMT_NV21 || |
808 | icd->current_fmt->host_fmt->fourcc == V4L2_PIX_FMT_NV61) | |
9e4a56d2 | 809 | value ^= 0x00000100; /* swap U, V to change from NV1x->NVx1 */ |
8be65dc5 | 810 | |
7a1a8164 MD |
811 | value |= common_flags & SOCAM_VSYNC_ACTIVE_LOW ? 1 << 1 : 0; |
812 | value |= common_flags & SOCAM_HSYNC_ACTIVE_LOW ? 1 << 0 : 0; | |
904078f1 | 813 | value |= pcdev->is_16bit ? 1 << 12 : 0; |
b3b5020d GL |
814 | |
815 | /* CSI2 mode */ | |
6b526fed | 816 | if (pcdev->pdata->csi2) |
b3b5020d GL |
817 | value |= 3 << 12; |
818 | ||
0d3244d6 MD |
819 | ceu_write(pcdev, CAMCR, value); |
820 | ||
821 | ceu_write(pcdev, CAPCR, 0x00300000); | |
1edcc10d KM |
822 | |
823 | switch (pcdev->field) { | |
824 | case V4L2_FIELD_INTERLACED_TB: | |
825 | value = 0x101; | |
826 | break; | |
827 | case V4L2_FIELD_INTERLACED_BT: | |
828 | value = 0x102; | |
829 | break; | |
830 | default: | |
831 | value = 0; | |
832 | break; | |
833 | } | |
834 | ceu_write(pcdev, CAIFR, value); | |
0d3244d6 | 835 | |
e622681d | 836 | sh_mobile_ceu_set_rect(icd); |
0d3244d6 MD |
837 | mdelay(1); |
838 | ||
7dfff953 | 839 | dev_geo(icd->parent, "CFLCR 0x%x\n", pcdev->cflcr); |
961801bb | 840 | ceu_write(pcdev, CFLCR, pcdev->cflcr); |
dd54203b | 841 | |
5d28d525 GL |
842 | /* |
843 | * A few words about byte order (observed in Big Endian mode) | |
dd54203b MD |
844 | * |
845 | * In data fetch mode bytes are received in chunks of 8 bytes. | |
846 | * D0, D1, D2, D3, D4, D5, D6, D7 (D0 received first) | |
847 | * | |
848 | * The data is however by default written to memory in reverse order: | |
849 | * D7, D6, D5, D4, D3, D2, D1, D0 (D7 written to lowest byte) | |
850 | * | |
851 | * The lowest three bits of CDOCR allows us to do swapping, | |
2c0a072e MD |
852 | * using 7 we swap the data bytes to match the incoming order: |
853 | * D0, D1, D2, D3, D4, D5, D6, D7 | |
dd54203b | 854 | */ |
8be65dc5 MD |
855 | value = 0x00000017; |
856 | if (yuv_lineskip) | |
857 | value &= ~0x00000010; /* convert 4:2:2 -> 4:2:0 */ | |
858 | ||
859 | ceu_write(pcdev, CDOCR, value); | |
0d3244d6 MD |
860 | ceu_write(pcdev, CFWCR, 0); /* keep "datafetch firewall" disabled */ |
861 | ||
7dfff953 | 862 | dev_dbg(icd->parent, "S_FMT successful for %c%c%c%c %ux%u\n", |
904078f1 GL |
863 | pixfmt & 0xff, (pixfmt >> 8) & 0xff, |
864 | (pixfmt >> 16) & 0xff, (pixfmt >> 24) & 0xff, | |
6a6c8786 | 865 | icd->user_width, icd->user_height); |
904078f1 GL |
866 | |
867 | capture_restore(pcdev, capsr); | |
868 | ||
0d3244d6 | 869 | /* not in bundle mode: skip CBDSR, CDAYR2, CDACR2, CDBYR2, CDBCR2 */ |
0d3244d6 MD |
870 | return 0; |
871 | } | |
872 | ||
760697be GL |
873 | static int sh_mobile_ceu_try_bus_param(struct soc_camera_device *icd, |
874 | unsigned char buswidth) | |
0d3244d6 | 875 | { |
7dfff953 | 876 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
0d3244d6 MD |
877 | struct sh_mobile_ceu_dev *pcdev = ici->priv; |
878 | unsigned long camera_flags, common_flags; | |
879 | ||
880 | camera_flags = icd->ops->query_bus_param(icd); | |
881 | common_flags = soc_camera_bus_param_compatible(camera_flags, | |
c354b400 | 882 | make_bus_param(pcdev)); |
760697be GL |
883 | if (!common_flags || buswidth > 16 || |
884 | (buswidth > 8 && !(common_flags & SOCAM_DATAWIDTH_16))) | |
0d3244d6 MD |
885 | return -EINVAL; |
886 | ||
887 | return 0; | |
888 | } | |
889 | ||
760697be | 890 | static const struct soc_mbus_pixelfmt sh_mobile_ceu_formats[] = { |
9e4a56d2 | 891 | { |
760697be GL |
892 | .fourcc = V4L2_PIX_FMT_NV12, |
893 | .name = "NV12", | |
894 | .bits_per_sample = 12, | |
895 | .packing = SOC_MBUS_PACKING_NONE, | |
896 | .order = SOC_MBUS_ORDER_LE, | |
897 | }, { | |
898 | .fourcc = V4L2_PIX_FMT_NV21, | |
899 | .name = "NV21", | |
900 | .bits_per_sample = 12, | |
901 | .packing = SOC_MBUS_PACKING_NONE, | |
902 | .order = SOC_MBUS_ORDER_LE, | |
903 | }, { | |
904 | .fourcc = V4L2_PIX_FMT_NV16, | |
905 | .name = "NV16", | |
906 | .bits_per_sample = 16, | |
907 | .packing = SOC_MBUS_PACKING_NONE, | |
908 | .order = SOC_MBUS_ORDER_LE, | |
909 | }, { | |
910 | .fourcc = V4L2_PIX_FMT_NV61, | |
911 | .name = "NV61", | |
912 | .bits_per_sample = 16, | |
913 | .packing = SOC_MBUS_PACKING_NONE, | |
914 | .order = SOC_MBUS_ORDER_LE, | |
9e4a56d2 | 915 | }, |
8be65dc5 MD |
916 | }; |
917 | ||
760697be GL |
918 | /* This will be corrected as we get more formats */ |
919 | static bool sh_mobile_ceu_packing_supported(const struct soc_mbus_pixelfmt *fmt) | |
920 | { | |
921 | return fmt->packing == SOC_MBUS_PACKING_NONE || | |
922 | (fmt->bits_per_sample == 8 && | |
923 | fmt->packing == SOC_MBUS_PACKING_2X8_PADHI) || | |
924 | (fmt->bits_per_sample > 8 && | |
925 | fmt->packing == SOC_MBUS_PACKING_EXTEND16); | |
926 | } | |
927 | ||
e622681d GL |
928 | static int client_g_rect(struct v4l2_subdev *sd, struct v4l2_rect *rect); |
929 | ||
3805f201 | 930 | static int sh_mobile_ceu_get_formats(struct soc_camera_device *icd, unsigned int idx, |
9414de39 MD |
931 | struct soc_camera_format_xlate *xlate) |
932 | { | |
760697be | 933 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
7dfff953 | 934 | struct device *dev = icd->parent; |
b3b5020d GL |
935 | struct soc_camera_host *ici = to_soc_camera_host(dev); |
936 | struct sh_mobile_ceu_dev *pcdev = ici->priv; | |
8be65dc5 | 937 | int ret, k, n; |
9414de39 | 938 | int formats = 0; |
904078f1 | 939 | struct sh_mobile_ceu_cam *cam; |
760697be GL |
940 | enum v4l2_mbus_pixelcode code; |
941 | const struct soc_mbus_pixelfmt *fmt; | |
9414de39 | 942 | |
760697be GL |
943 | ret = v4l2_subdev_call(sd, video, enum_mbus_fmt, idx, &code); |
944 | if (ret < 0) | |
945 | /* No more formats */ | |
946 | return 0; | |
947 | ||
948 | fmt = soc_mbus_get_fmtdesc(code); | |
949 | if (!fmt) { | |
d2dcad49 GL |
950 | dev_warn(dev, "unsupported format code #%u: %d\n", idx, code); |
951 | return 0; | |
760697be GL |
952 | } |
953 | ||
6b526fed | 954 | if (!pcdev->pdata->csi2) { |
b3b5020d GL |
955 | ret = sh_mobile_ceu_try_bus_param(icd, fmt->bits_per_sample); |
956 | if (ret < 0) | |
957 | return 0; | |
958 | } | |
9414de39 | 959 | |
904078f1 | 960 | if (!icd->host_priv) { |
e622681d GL |
961 | struct v4l2_mbus_framefmt mf; |
962 | struct v4l2_rect rect; | |
e622681d GL |
963 | int shift = 0; |
964 | ||
965 | /* FIXME: subwindow is lost between close / open */ | |
966 | ||
967 | /* Cache current client geometry */ | |
968 | ret = client_g_rect(sd, &rect); | |
969 | if (ret < 0) | |
970 | return ret; | |
971 | ||
972 | /* First time */ | |
973 | ret = v4l2_subdev_call(sd, video, g_mbus_fmt, &mf); | |
974 | if (ret < 0) | |
975 | return ret; | |
976 | ||
977 | while ((mf.width > 2560 || mf.height > 1920) && shift < 4) { | |
978 | /* Try 2560x1920, 1280x960, 640x480, 320x240 */ | |
979 | mf.width = 2560 >> shift; | |
980 | mf.height = 1920 >> shift; | |
24105ebc | 981 | ret = v4l2_device_call_until_err(sd->v4l2_dev, (long)icd, video, |
b3b5020d | 982 | s_mbus_fmt, &mf); |
e622681d GL |
983 | if (ret < 0) |
984 | return ret; | |
985 | shift++; | |
986 | } | |
987 | ||
988 | if (shift == 4) { | |
989 | dev_err(dev, "Failed to configure the client below %ux%x\n", | |
990 | mf.width, mf.height); | |
991 | return -EIO; | |
992 | } | |
993 | ||
994 | dev_geo(dev, "camera fmt %ux%u\n", mf.width, mf.height); | |
995 | ||
904078f1 GL |
996 | cam = kzalloc(sizeof(*cam), GFP_KERNEL); |
997 | if (!cam) | |
998 | return -ENOMEM; | |
999 | ||
e622681d GL |
1000 | /* We are called with current camera crop, initialise subrect with it */ |
1001 | cam->rect = rect; | |
1002 | cam->subrect = rect; | |
1003 | ||
1004 | cam->width = mf.width; | |
1005 | cam->height = mf.height; | |
1006 | ||
1007 | cam->width = mf.width; | |
1008 | cam->height = mf.height; | |
1009 | ||
904078f1 GL |
1010 | icd->host_priv = cam; |
1011 | } else { | |
1012 | cam = icd->host_priv; | |
1013 | } | |
1014 | ||
c8329acc GL |
1015 | /* Beginning of a pass */ |
1016 | if (!idx) | |
904078f1 | 1017 | cam->extra_fmt = NULL; |
c8329acc | 1018 | |
760697be | 1019 | switch (code) { |
ace6e979 GL |
1020 | case V4L2_MBUS_FMT_UYVY8_2X8: |
1021 | case V4L2_MBUS_FMT_VYUY8_2X8: | |
1022 | case V4L2_MBUS_FMT_YUYV8_2X8: | |
1023 | case V4L2_MBUS_FMT_YVYU8_2X8: | |
904078f1 | 1024 | if (cam->extra_fmt) |
760697be | 1025 | break; |
c8329acc GL |
1026 | |
1027 | /* | |
1028 | * Our case is simple so far: for any of the above four camera | |
1029 | * formats we add all our four synthesized NV* formats, so, | |
1030 | * just marking the device with a single flag suffices. If | |
1031 | * the format generation rules are more complex, you would have | |
1032 | * to actually hang your already added / counted formats onto | |
1033 | * the host_priv pointer and check whether the format you're | |
1034 | * going to add now is already there. | |
1035 | */ | |
760697be | 1036 | cam->extra_fmt = sh_mobile_ceu_formats; |
c8329acc | 1037 | |
8be65dc5 MD |
1038 | n = ARRAY_SIZE(sh_mobile_ceu_formats); |
1039 | formats += n; | |
1040 | for (k = 0; xlate && k < n; k++) { | |
760697be GL |
1041 | xlate->host_fmt = &sh_mobile_ceu_formats[k]; |
1042 | xlate->code = code; | |
8be65dc5 | 1043 | xlate++; |
760697be GL |
1044 | dev_dbg(dev, "Providing format %s using code %d\n", |
1045 | sh_mobile_ceu_formats[k].name, code); | |
8be65dc5 | 1046 | } |
760697be | 1047 | break; |
9414de39 | 1048 | default: |
760697be GL |
1049 | if (!sh_mobile_ceu_packing_supported(fmt)) |
1050 | return 0; | |
1051 | } | |
1052 | ||
1053 | /* Generic pass-through */ | |
1054 | formats++; | |
1055 | if (xlate) { | |
1056 | xlate->host_fmt = fmt; | |
1057 | xlate->code = code; | |
1058 | xlate++; | |
1059 | dev_dbg(dev, "Providing format %s in pass-through mode\n", | |
e53a4805 | 1060 | fmt->name); |
9414de39 MD |
1061 | } |
1062 | ||
1063 | return formats; | |
1064 | } | |
1065 | ||
904078f1 GL |
1066 | static void sh_mobile_ceu_put_formats(struct soc_camera_device *icd) |
1067 | { | |
1068 | kfree(icd->host_priv); | |
1069 | icd->host_priv = NULL; | |
1070 | } | |
1071 | ||
961801bb | 1072 | /* Check if any dimension of r1 is smaller than respective one of r2 */ |
904078f1 GL |
1073 | static bool is_smaller(struct v4l2_rect *r1, struct v4l2_rect *r2) |
1074 | { | |
1075 | return r1->width < r2->width || r1->height < r2->height; | |
1076 | } | |
1077 | ||
961801bb GL |
1078 | /* Check if r1 fails to cover r2 */ |
1079 | static bool is_inside(struct v4l2_rect *r1, struct v4l2_rect *r2) | |
1080 | { | |
1081 | return r1->left > r2->left || r1->top > r2->top || | |
1082 | r1->left + r1->width < r2->left + r2->width || | |
1083 | r1->top + r1->height < r2->top + r2->height; | |
1084 | } | |
1085 | ||
6a6c8786 GL |
1086 | static unsigned int scale_down(unsigned int size, unsigned int scale) |
1087 | { | |
1088 | return (size * 4096 + scale / 2) / scale; | |
1089 | } | |
1090 | ||
6a6c8786 GL |
1091 | static unsigned int calc_generic_scale(unsigned int input, unsigned int output) |
1092 | { | |
1093 | return (input * 4096 + output / 2) / output; | |
1094 | } | |
1095 | ||
e622681d | 1096 | /* Get and store current client crop */ |
6a6c8786 GL |
1097 | static int client_g_rect(struct v4l2_subdev *sd, struct v4l2_rect *rect) |
1098 | { | |
1099 | struct v4l2_crop crop; | |
1100 | struct v4l2_cropcap cap; | |
1101 | int ret; | |
1102 | ||
1103 | crop.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; | |
1104 | ||
1105 | ret = v4l2_subdev_call(sd, video, g_crop, &crop); | |
1106 | if (!ret) { | |
1107 | *rect = crop.c; | |
1108 | return ret; | |
1109 | } | |
1110 | ||
1111 | /* Camera driver doesn't support .g_crop(), assume default rectangle */ | |
1112 | cap.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; | |
1113 | ||
1114 | ret = v4l2_subdev_call(sd, video, cropcap, &cap); | |
e622681d GL |
1115 | if (!ret) |
1116 | *rect = cap.defrect; | |
6a6c8786 GL |
1117 | |
1118 | return ret; | |
1119 | } | |
1120 | ||
e622681d GL |
1121 | /* Client crop has changed, update our sub-rectangle to remain within the area */ |
1122 | static void update_subrect(struct sh_mobile_ceu_cam *cam) | |
1123 | { | |
1124 | struct v4l2_rect *rect = &cam->rect, *subrect = &cam->subrect; | |
1125 | ||
1126 | if (rect->width < subrect->width) | |
1127 | subrect->width = rect->width; | |
1128 | ||
1129 | if (rect->height < subrect->height) | |
1130 | subrect->height = rect->height; | |
1131 | ||
1132 | if (rect->left > subrect->left) | |
1133 | subrect->left = rect->left; | |
1134 | else if (rect->left + rect->width > | |
1135 | subrect->left + subrect->width) | |
1136 | subrect->left = rect->left + rect->width - | |
1137 | subrect->width; | |
1138 | ||
1139 | if (rect->top > subrect->top) | |
1140 | subrect->top = rect->top; | |
1141 | else if (rect->top + rect->height > | |
1142 | subrect->top + subrect->height) | |
1143 | subrect->top = rect->top + rect->height - | |
1144 | subrect->height; | |
1145 | } | |
1146 | ||
961801bb | 1147 | /* |
6a6c8786 | 1148 | * The common for both scaling and cropping iterative approach is: |
961801bb GL |
1149 | * 1. try if the client can produce exactly what requested by the user |
1150 | * 2. if (1) failed, try to double the client image until we get one big enough | |
1151 | * 3. if (2) failed, try to request the maximum image | |
1152 | */ | |
e622681d | 1153 | static int client_s_crop(struct soc_camera_device *icd, struct v4l2_crop *crop, |
6a6c8786 | 1154 | struct v4l2_crop *cam_crop) |
09e231b3 | 1155 | { |
e622681d | 1156 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
6a6c8786 GL |
1157 | struct v4l2_rect *rect = &crop->c, *cam_rect = &cam_crop->c; |
1158 | struct device *dev = sd->v4l2_dev->dev; | |
e622681d | 1159 | struct sh_mobile_ceu_cam *cam = icd->host_priv; |
6a6c8786 | 1160 | struct v4l2_cropcap cap; |
904078f1 | 1161 | int ret; |
6a6c8786 | 1162 | unsigned int width, height; |
904078f1 | 1163 | |
6a6c8786 GL |
1164 | v4l2_subdev_call(sd, video, s_crop, crop); |
1165 | ret = client_g_rect(sd, cam_rect); | |
1166 | if (ret < 0) | |
1167 | return ret; | |
961801bb | 1168 | |
6a6c8786 GL |
1169 | /* |
1170 | * Now cam_crop contains the current camera input rectangle, and it must | |
1171 | * be within camera cropcap bounds | |
1172 | */ | |
1173 | if (!memcmp(rect, cam_rect, sizeof(*rect))) { | |
1174 | /* Even if camera S_CROP failed, but camera rectangle matches */ | |
e26b3144 | 1175 | dev_dbg(dev, "Camera S_CROP successful for %dx%d@%d:%d\n", |
6a6c8786 | 1176 | rect->width, rect->height, rect->left, rect->top); |
e622681d | 1177 | cam->rect = *cam_rect; |
6a6c8786 | 1178 | return 0; |
904078f1 GL |
1179 | } |
1180 | ||
6a6c8786 | 1181 | /* Try to fix cropping, that camera hasn't managed to set */ |
e26b3144 | 1182 | dev_geo(dev, "Fix camera S_CROP for %dx%d@%d:%d to %dx%d@%d:%d\n", |
6a6c8786 | 1183 | cam_rect->width, cam_rect->height, |
08590b96 | 1184 | cam_rect->left, cam_rect->top, |
6a6c8786 GL |
1185 | rect->width, rect->height, rect->left, rect->top); |
1186 | ||
1187 | /* We need sensor maximum rectangle */ | |
1188 | ret = v4l2_subdev_call(sd, video, cropcap, &cap); | |
1189 | if (ret < 0) | |
1190 | return ret; | |
1191 | ||
e622681d | 1192 | /* Put user requested rectangle within sensor bounds */ |
6a6c8786 GL |
1193 | soc_camera_limit_side(&rect->left, &rect->width, cap.bounds.left, 2, |
1194 | cap.bounds.width); | |
1195 | soc_camera_limit_side(&rect->top, &rect->height, cap.bounds.top, 4, | |
1196 | cap.bounds.height); | |
904078f1 GL |
1197 | |
1198 | /* | |
1199 | * Popular special case - some cameras can only handle fixed sizes like | |
1200 | * QVGA, VGA,... Take care to avoid infinite loop. | |
1201 | */ | |
6a6c8786 GL |
1202 | width = max(cam_rect->width, 2); |
1203 | height = max(cam_rect->height, 2); | |
1204 | ||
e622681d GL |
1205 | /* |
1206 | * Loop as long as sensor is not covering the requested rectangle and | |
1207 | * is still within its bounds | |
1208 | */ | |
6a6c8786 GL |
1209 | while (!ret && (is_smaller(cam_rect, rect) || |
1210 | is_inside(cam_rect, rect)) && | |
1211 | (cap.bounds.width > width || cap.bounds.height > height)) { | |
961801bb GL |
1212 | |
1213 | width *= 2; | |
1214 | height *= 2; | |
6a6c8786 | 1215 | |
08590b96 GL |
1216 | cam_rect->width = width; |
1217 | cam_rect->height = height; | |
904078f1 | 1218 | |
6a6c8786 GL |
1219 | /* |
1220 | * We do not know what capabilities the camera has to set up | |
1221 | * left and top borders. We could try to be smarter in iterating | |
1222 | * them, e.g., if camera current left is to the right of the | |
1223 | * target left, set it to the middle point between the current | |
1224 | * left and minimum left. But that would add too much | |
1225 | * complexity: we would have to iterate each border separately. | |
e622681d | 1226 | * Instead we just drop to the left and top bounds. |
6a6c8786 GL |
1227 | */ |
1228 | if (cam_rect->left > rect->left) | |
1229 | cam_rect->left = cap.bounds.left; | |
961801bb | 1230 | |
6a6c8786 GL |
1231 | if (cam_rect->left + cam_rect->width < rect->left + rect->width) |
1232 | cam_rect->width = rect->left + rect->width - | |
08590b96 | 1233 | cam_rect->left; |
961801bb | 1234 | |
6a6c8786 GL |
1235 | if (cam_rect->top > rect->top) |
1236 | cam_rect->top = cap.bounds.top; | |
961801bb | 1237 | |
6a6c8786 GL |
1238 | if (cam_rect->top + cam_rect->height < rect->top + rect->height) |
1239 | cam_rect->height = rect->top + rect->height - | |
08590b96 | 1240 | cam_rect->top; |
961801bb | 1241 | |
6a6c8786 GL |
1242 | v4l2_subdev_call(sd, video, s_crop, cam_crop); |
1243 | ret = client_g_rect(sd, cam_rect); | |
e26b3144 | 1244 | dev_geo(dev, "Camera S_CROP %d for %dx%d@%d:%d\n", ret, |
6a6c8786 | 1245 | cam_rect->width, cam_rect->height, |
08590b96 | 1246 | cam_rect->left, cam_rect->top); |
904078f1 GL |
1247 | } |
1248 | ||
6a6c8786 GL |
1249 | /* S_CROP must not modify the rectangle */ |
1250 | if (is_smaller(cam_rect, rect) || is_inside(cam_rect, rect)) { | |
904078f1 GL |
1251 | /* |
1252 | * The camera failed to configure a suitable cropping, | |
1253 | * we cannot use the current rectangle, set to max | |
1254 | */ | |
6a6c8786 GL |
1255 | *cam_rect = cap.bounds; |
1256 | v4l2_subdev_call(sd, video, s_crop, cam_crop); | |
1257 | ret = client_g_rect(sd, cam_rect); | |
e26b3144 | 1258 | dev_geo(dev, "Camera S_CROP %d for max %dx%d@%d:%d\n", ret, |
6a6c8786 | 1259 | cam_rect->width, cam_rect->height, |
08590b96 | 1260 | cam_rect->left, cam_rect->top); |
904078f1 GL |
1261 | } |
1262 | ||
e622681d GL |
1263 | if (!ret) { |
1264 | cam->rect = *cam_rect; | |
1265 | update_subrect(cam); | |
6a6c8786 GL |
1266 | } |
1267 | ||
e622681d | 1268 | return ret; |
6a6c8786 GL |
1269 | } |
1270 | ||
e622681d | 1271 | /* Iterative s_mbus_fmt, also updates cached client crop on success */ |
760697be GL |
1272 | static int client_s_fmt(struct soc_camera_device *icd, |
1273 | struct v4l2_mbus_framefmt *mf, bool ceu_can_scale) | |
6a6c8786 | 1274 | { |
e622681d | 1275 | struct sh_mobile_ceu_cam *cam = icd->host_priv; |
6a6c8786 | 1276 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
7dfff953 | 1277 | struct device *dev = icd->parent; |
760697be | 1278 | unsigned int width = mf->width, height = mf->height, tmp_w, tmp_h; |
6a6c8786 GL |
1279 | unsigned int max_width, max_height; |
1280 | struct v4l2_cropcap cap; | |
1281 | int ret; | |
1282 | ||
24105ebc | 1283 | ret = v4l2_device_call_until_err(sd->v4l2_dev, (long)icd, video, |
b3b5020d | 1284 | s_mbus_fmt, mf); |
e622681d GL |
1285 | if (ret < 0) |
1286 | return ret; | |
1287 | ||
1288 | dev_geo(dev, "camera scaled to %ux%u\n", mf->width, mf->height); | |
1289 | ||
1290 | if ((width == mf->width && height == mf->height) || !ceu_can_scale) | |
1291 | goto update_cache; | |
1292 | ||
6a6c8786 GL |
1293 | cap.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; |
1294 | ||
1295 | ret = v4l2_subdev_call(sd, video, cropcap, &cap); | |
1296 | if (ret < 0) | |
1297 | return ret; | |
1298 | ||
1299 | max_width = min(cap.bounds.width, 2560); | |
1300 | max_height = min(cap.bounds.height, 1920); | |
1301 | ||
6a6c8786 | 1302 | /* Camera set a format, but geometry is not precise, try to improve */ |
760697be GL |
1303 | tmp_w = mf->width; |
1304 | tmp_h = mf->height; | |
6a6c8786 GL |
1305 | |
1306 | /* width <= max_width && height <= max_height - guaranteed by try_fmt */ | |
1307 | while ((width > tmp_w || height > tmp_h) && | |
1308 | tmp_w < max_width && tmp_h < max_height) { | |
1309 | tmp_w = min(2 * tmp_w, max_width); | |
1310 | tmp_h = min(2 * tmp_h, max_height); | |
760697be GL |
1311 | mf->width = tmp_w; |
1312 | mf->height = tmp_h; | |
24105ebc | 1313 | ret = v4l2_device_call_until_err(sd->v4l2_dev, (long)icd, video, |
b3b5020d | 1314 | s_mbus_fmt, mf); |
6a6c8786 | 1315 | dev_geo(dev, "Camera scaled to %ux%u\n", |
760697be | 1316 | mf->width, mf->height); |
6a6c8786 GL |
1317 | if (ret < 0) { |
1318 | /* This shouldn't happen */ | |
1319 | dev_err(dev, "Client failed to set format: %d\n", ret); | |
1320 | return ret; | |
1321 | } | |
1322 | } | |
1323 | ||
e622681d GL |
1324 | update_cache: |
1325 | /* Update cache */ | |
1326 | ret = client_g_rect(sd, &cam->rect); | |
1327 | if (ret < 0) | |
1328 | return ret; | |
1329 | ||
1330 | update_subrect(cam); | |
1331 | ||
6a6c8786 GL |
1332 | return 0; |
1333 | } | |
1334 | ||
1335 | /** | |
e622681d GL |
1336 | * @width - on output: user width, mapped back to input |
1337 | * @height - on output: user height, mapped back to input | |
1338 | * @mf - in- / output camera output window | |
6a6c8786 | 1339 | */ |
e622681d GL |
1340 | static int client_scale(struct soc_camera_device *icd, |
1341 | struct v4l2_mbus_framefmt *mf, | |
1342 | unsigned int *width, unsigned int *height, | |
1343 | bool ceu_can_scale) | |
6a6c8786 | 1344 | { |
6a6c8786 | 1345 | struct sh_mobile_ceu_cam *cam = icd->host_priv; |
7dfff953 | 1346 | struct device *dev = icd->parent; |
760697be | 1347 | struct v4l2_mbus_framefmt mf_tmp = *mf; |
6a6c8786 GL |
1348 | unsigned int scale_h, scale_v; |
1349 | int ret; | |
1350 | ||
e622681d GL |
1351 | /* |
1352 | * 5. Apply iterative camera S_FMT for camera user window (also updates | |
1353 | * client crop cache and the imaginary sub-rectangle). | |
1354 | */ | |
760697be | 1355 | ret = client_s_fmt(icd, &mf_tmp, ceu_can_scale); |
6a6c8786 GL |
1356 | if (ret < 0) |
1357 | return ret; | |
1358 | ||
1359 | dev_geo(dev, "5: camera scaled to %ux%u\n", | |
760697be | 1360 | mf_tmp.width, mf_tmp.height); |
6a6c8786 GL |
1361 | |
1362 | /* 6. Retrieve camera output window (g_fmt) */ | |
1363 | ||
760697be | 1364 | /* unneeded - it is already in "mf_tmp" */ |
6a6c8786 | 1365 | |
e622681d GL |
1366 | /* 7. Calculate new client scales. */ |
1367 | scale_h = calc_generic_scale(cam->rect.width, mf_tmp.width); | |
1368 | scale_v = calc_generic_scale(cam->rect.height, mf_tmp.height); | |
6a6c8786 | 1369 | |
760697be GL |
1370 | mf->width = mf_tmp.width; |
1371 | mf->height = mf_tmp.height; | |
1372 | mf->colorspace = mf_tmp.colorspace; | |
904078f1 GL |
1373 | |
1374 | /* | |
6a6c8786 | 1375 | * 8. Calculate new CEU crop - apply camera scales to previously |
e622681d | 1376 | * updated "effective" crop. |
904078f1 | 1377 | */ |
e622681d GL |
1378 | *width = scale_down(cam->subrect.width, scale_h); |
1379 | *height = scale_down(cam->subrect.height, scale_v); | |
6a6c8786 | 1380 | |
e622681d | 1381 | dev_geo(dev, "8: new client sub-window %ux%u\n", *width, *height); |
6a6c8786 GL |
1382 | |
1383 | return 0; | |
1384 | } | |
1385 | ||
1386 | /* | |
1387 | * CEU can scale and crop, but we don't want to waste bandwidth and kill the | |
1388 | * framerate by always requesting the maximum image from the client. See | |
3dac322d | 1389 | * Documentation/video4linux/sh_mobile_ceu_camera.txt for a description of |
6a6c8786 GL |
1390 | * scaling and cropping algorithms and for the meaning of referenced here steps. |
1391 | */ | |
1392 | static int sh_mobile_ceu_set_crop(struct soc_camera_device *icd, | |
1393 | struct v4l2_crop *a) | |
1394 | { | |
1395 | struct v4l2_rect *rect = &a->c; | |
7dfff953 GL |
1396 | struct device *dev = icd->parent; |
1397 | struct soc_camera_host *ici = to_soc_camera_host(dev); | |
6a6c8786 GL |
1398 | struct sh_mobile_ceu_dev *pcdev = ici->priv; |
1399 | struct v4l2_crop cam_crop; | |
1400 | struct sh_mobile_ceu_cam *cam = icd->host_priv; | |
e622681d | 1401 | struct v4l2_rect *cam_rect = &cam_crop.c; |
6a6c8786 | 1402 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
760697be | 1403 | struct v4l2_mbus_framefmt mf; |
e622681d | 1404 | unsigned int scale_cam_h, scale_cam_v, scale_ceu_h, scale_ceu_v, |
787d0f9d | 1405 | out_width, out_height; |
e622681d | 1406 | int interm_width, interm_height; |
6a6c8786 GL |
1407 | u32 capsr, cflcr; |
1408 | int ret; | |
1409 | ||
e622681d GL |
1410 | dev_geo(dev, "S_CROP(%ux%u@%u:%u)\n", rect->width, rect->height, |
1411 | rect->left, rect->top); | |
6a6c8786 | 1412 | |
e622681d GL |
1413 | /* During camera cropping its output window can change too, stop CEU */ |
1414 | capsr = capture_save_reset(pcdev); | |
1415 | dev_dbg(dev, "CAPSR 0x%x, CFLCR 0x%x\n", capsr, pcdev->cflcr); | |
6a6c8786 | 1416 | |
e622681d GL |
1417 | /* 1. - 2. Apply iterative camera S_CROP for new input window. */ |
1418 | ret = client_s_crop(icd, a, &cam_crop); | |
6a6c8786 GL |
1419 | if (ret < 0) |
1420 | return ret; | |
1421 | ||
e622681d | 1422 | dev_geo(dev, "1-2: camera cropped to %ux%u@%u:%u\n", |
6a6c8786 GL |
1423 | cam_rect->width, cam_rect->height, |
1424 | cam_rect->left, cam_rect->top); | |
1425 | ||
1426 | /* On success cam_crop contains current camera crop */ | |
1427 | ||
e622681d GL |
1428 | /* 3. Retrieve camera output window */ |
1429 | ret = v4l2_subdev_call(sd, video, g_mbus_fmt, &mf); | |
1430 | if (ret < 0) | |
1431 | return ret; | |
6a6c8786 | 1432 | |
e622681d GL |
1433 | if (mf.width > 2560 || mf.height > 1920) |
1434 | return -EINVAL; | |
6a6c8786 | 1435 | |
e622681d GL |
1436 | /* 4. Calculate camera scales */ |
1437 | scale_cam_h = calc_generic_scale(cam_rect->width, mf.width); | |
1438 | scale_cam_v = calc_generic_scale(cam_rect->height, mf.height); | |
6a6c8786 | 1439 | |
e622681d GL |
1440 | /* Calculate intermediate window */ |
1441 | interm_width = scale_down(rect->width, scale_cam_h); | |
1442 | interm_height = scale_down(rect->height, scale_cam_v); | |
6a6c8786 | 1443 | |
3dac322d GL |
1444 | if (interm_width < icd->user_width) { |
1445 | u32 new_scale_h; | |
1446 | ||
1447 | new_scale_h = calc_generic_scale(rect->width, icd->user_width); | |
1448 | ||
1449 | mf.width = scale_down(cam_rect->width, new_scale_h); | |
1450 | } | |
1451 | ||
1452 | if (interm_height < icd->user_height) { | |
1453 | u32 new_scale_v; | |
1454 | ||
1455 | new_scale_v = calc_generic_scale(rect->height, icd->user_height); | |
1456 | ||
1457 | mf.height = scale_down(cam_rect->height, new_scale_v); | |
1458 | } | |
1459 | ||
1460 | if (interm_width < icd->user_width || interm_height < icd->user_height) { | |
1461 | ret = v4l2_device_call_until_err(sd->v4l2_dev, (int)icd, video, | |
1462 | s_mbus_fmt, &mf); | |
1463 | if (ret < 0) | |
1464 | return ret; | |
1465 | ||
1466 | dev_geo(dev, "New camera output %ux%u\n", mf.width, mf.height); | |
1467 | scale_cam_h = calc_generic_scale(cam_rect->width, mf.width); | |
1468 | scale_cam_v = calc_generic_scale(cam_rect->height, mf.height); | |
1469 | interm_width = scale_down(rect->width, scale_cam_h); | |
1470 | interm_height = scale_down(rect->height, scale_cam_v); | |
1471 | } | |
1472 | ||
1473 | /* Cache camera output window */ | |
1474 | cam->width = mf.width; | |
1475 | cam->height = mf.height; | |
1476 | ||
e622681d GL |
1477 | if (pcdev->image_mode) { |
1478 | out_width = min(interm_width, icd->user_width); | |
1479 | out_height = min(interm_height, icd->user_height); | |
1480 | } else { | |
1481 | out_width = interm_width; | |
1482 | out_height = interm_height; | |
1483 | } | |
6a6c8786 GL |
1484 | |
1485 | /* | |
e622681d GL |
1486 | * 5. Calculate CEU scales from camera scales from results of (5) and |
1487 | * the user window | |
6a6c8786 | 1488 | */ |
e622681d GL |
1489 | scale_ceu_h = calc_scale(interm_width, &out_width); |
1490 | scale_ceu_v = calc_scale(interm_height, &out_height); | |
6a6c8786 | 1491 | |
e622681d GL |
1492 | dev_geo(dev, "5: CEU scales %u:%u\n", scale_ceu_h, scale_ceu_v); |
1493 | ||
1494 | /* Apply CEU scales. */ | |
6a6c8786 GL |
1495 | cflcr = scale_ceu_h | (scale_ceu_v << 16); |
1496 | if (cflcr != pcdev->cflcr) { | |
1497 | pcdev->cflcr = cflcr; | |
1498 | ceu_write(pcdev, CFLCR, cflcr); | |
1499 | } | |
1500 | ||
e622681d GL |
1501 | icd->user_width = out_width; |
1502 | icd->user_height = out_height; | |
787d0f9d GL |
1503 | cam->ceu_left = scale_down(rect->left - cam_rect->left, scale_cam_h) & ~1; |
1504 | cam->ceu_top = scale_down(rect->top - cam_rect->top, scale_cam_v) & ~1; | |
e622681d GL |
1505 | |
1506 | /* 6. Use CEU cropping to crop to the new window. */ | |
1507 | sh_mobile_ceu_set_rect(icd); | |
1508 | ||
1509 | cam->subrect = *rect; | |
1510 | ||
1511 | dev_geo(dev, "6: CEU cropped to %ux%u@%u:%u\n", | |
1512 | icd->user_width, icd->user_height, | |
1513 | cam->ceu_left, cam->ceu_top); | |
1514 | ||
787d0f9d | 1515 | /* Restore capture. The CE bit can be cleared by the hardware */ |
904078f1 GL |
1516 | if (pcdev->active) |
1517 | capsr |= 1; | |
904078f1 GL |
1518 | capture_restore(pcdev, capsr); |
1519 | ||
904078f1 GL |
1520 | /* Even if only camera cropping succeeded */ |
1521 | return ret; | |
09e231b3 GL |
1522 | } |
1523 | ||
e622681d GL |
1524 | static int sh_mobile_ceu_get_crop(struct soc_camera_device *icd, |
1525 | struct v4l2_crop *a) | |
1526 | { | |
1527 | struct sh_mobile_ceu_cam *cam = icd->host_priv; | |
1528 | ||
1529 | a->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; | |
1530 | a->c = cam->subrect; | |
1531 | ||
1532 | return 0; | |
1533 | } | |
1534 | ||
1535 | /* | |
1536 | * Calculate real client output window by applying new scales to the current | |
1537 | * client crop. New scales are calculated from the requested output format and | |
1538 | * CEU crop, mapped backed onto the client input (subrect). | |
1539 | */ | |
1540 | static void calculate_client_output(struct soc_camera_device *icd, | |
1541 | struct v4l2_pix_format *pix, struct v4l2_mbus_framefmt *mf) | |
1542 | { | |
1543 | struct sh_mobile_ceu_cam *cam = icd->host_priv; | |
7dfff953 | 1544 | struct device *dev = icd->parent; |
e622681d GL |
1545 | struct v4l2_rect *cam_subrect = &cam->subrect; |
1546 | unsigned int scale_v, scale_h; | |
1547 | ||
1548 | if (cam_subrect->width == cam->rect.width && | |
1549 | cam_subrect->height == cam->rect.height) { | |
1550 | /* No sub-cropping */ | |
1551 | mf->width = pix->width; | |
1552 | mf->height = pix->height; | |
1553 | return; | |
1554 | } | |
1555 | ||
1556 | /* 1.-2. Current camera scales and subwin - cached. */ | |
1557 | ||
1558 | dev_geo(dev, "2: subwin %ux%u@%u:%u\n", | |
1559 | cam_subrect->width, cam_subrect->height, | |
1560 | cam_subrect->left, cam_subrect->top); | |
1561 | ||
1562 | /* | |
1563 | * 3. Calculate new combined scales from input sub-window to requested | |
1564 | * user window. | |
1565 | */ | |
1566 | ||
1567 | /* | |
1568 | * TODO: CEU cannot scale images larger than VGA to smaller than SubQCIF | |
1569 | * (128x96) or larger than VGA | |
1570 | */ | |
1571 | scale_h = calc_generic_scale(cam_subrect->width, pix->width); | |
1572 | scale_v = calc_generic_scale(cam_subrect->height, pix->height); | |
1573 | ||
1574 | dev_geo(dev, "3: scales %u:%u\n", scale_h, scale_v); | |
1575 | ||
1576 | /* | |
1577 | * 4. Calculate client output window by applying combined scales to real | |
1578 | * input window. | |
1579 | */ | |
1580 | mf->width = scale_down(cam->rect.width, scale_h); | |
1581 | mf->height = scale_down(cam->rect.height, scale_v); | |
1582 | } | |
1583 | ||
961801bb | 1584 | /* Similar to set_crop multistage iterative algorithm */ |
d8fac217 | 1585 | static int sh_mobile_ceu_set_fmt(struct soc_camera_device *icd, |
09e231b3 | 1586 | struct v4l2_format *f) |
0d3244d6 | 1587 | { |
7dfff953 GL |
1588 | struct device *dev = icd->parent; |
1589 | struct soc_camera_host *ici = to_soc_camera_host(dev); | |
961801bb | 1590 | struct sh_mobile_ceu_dev *pcdev = ici->priv; |
904078f1 GL |
1591 | struct sh_mobile_ceu_cam *cam = icd->host_priv; |
1592 | struct v4l2_pix_format *pix = &f->fmt.pix; | |
760697be | 1593 | struct v4l2_mbus_framefmt mf; |
904078f1 | 1594 | __u32 pixfmt = pix->pixelformat; |
9414de39 | 1595 | const struct soc_camera_format_xlate *xlate; |
b3b5020d GL |
1596 | /* Keep Compiler Happy */ |
1597 | unsigned int ceu_sub_width = 0, ceu_sub_height = 0; | |
6a6c8786 GL |
1598 | u16 scale_v, scale_h; |
1599 | int ret; | |
1edcc10d KM |
1600 | bool image_mode; |
1601 | enum v4l2_field field; | |
961801bb | 1602 | |
e622681d GL |
1603 | dev_geo(dev, "S_FMT(pix=0x%x, %ux%u)\n", pixfmt, pix->width, pix->height); |
1604 | ||
961801bb | 1605 | switch (pix->field) { |
961801bb GL |
1606 | default: |
1607 | pix->field = V4L2_FIELD_NONE; | |
1608 | /* fall-through */ | |
1edcc10d KM |
1609 | case V4L2_FIELD_INTERLACED_TB: |
1610 | case V4L2_FIELD_INTERLACED_BT: | |
961801bb | 1611 | case V4L2_FIELD_NONE: |
1edcc10d KM |
1612 | field = pix->field; |
1613 | break; | |
1614 | case V4L2_FIELD_INTERLACED: | |
1615 | field = V4L2_FIELD_INTERLACED_TB; | |
961801bb GL |
1616 | break; |
1617 | } | |
25c4d74e | 1618 | |
9414de39 MD |
1619 | xlate = soc_camera_xlate_by_fourcc(icd, pixfmt); |
1620 | if (!xlate) { | |
6a6c8786 | 1621 | dev_warn(dev, "Format %x not found\n", pixfmt); |
9414de39 | 1622 | return -EINVAL; |
25c4d74e GL |
1623 | } |
1624 | ||
e622681d GL |
1625 | /* 1.-4. Calculate client output geometry */ |
1626 | calculate_client_output(icd, &f->fmt.pix, &mf); | |
760697be GL |
1627 | mf.field = pix->field; |
1628 | mf.colorspace = pix->colorspace; | |
1629 | mf.code = xlate->code; | |
6a6c8786 | 1630 | |
961801bb GL |
1631 | switch (pixfmt) { |
1632 | case V4L2_PIX_FMT_NV12: | |
1633 | case V4L2_PIX_FMT_NV21: | |
1634 | case V4L2_PIX_FMT_NV16: | |
1635 | case V4L2_PIX_FMT_NV61: | |
6a6c8786 | 1636 | image_mode = true; |
961801bb GL |
1637 | break; |
1638 | default: | |
6a6c8786 | 1639 | image_mode = false; |
9414de39 | 1640 | } |
25c4d74e | 1641 | |
e622681d | 1642 | dev_geo(dev, "4: request camera output %ux%u\n", mf.width, mf.height); |
961801bb | 1643 | |
6a6c8786 | 1644 | /* 5. - 9. */ |
e622681d | 1645 | ret = client_scale(icd, &mf, &ceu_sub_width, &ceu_sub_height, |
1edcc10d | 1646 | image_mode && V4L2_FIELD_NONE == field); |
6a6c8786 | 1647 | |
e622681d | 1648 | dev_geo(dev, "5-9: client scale return %d\n", ret); |
6a6c8786 GL |
1649 | |
1650 | /* Done with the camera. Now see if we can improve the result */ | |
1651 | ||
b3b5020d GL |
1652 | dev_geo(dev, "fmt %ux%u, requested %ux%u\n", |
1653 | mf.width, mf.height, pix->width, pix->height); | |
6a6c8786 GL |
1654 | if (ret < 0) |
1655 | return ret; | |
1656 | ||
760697be GL |
1657 | if (mf.code != xlate->code) |
1658 | return -EINVAL; | |
1659 | ||
e622681d GL |
1660 | /* 9. Prepare CEU crop */ |
1661 | cam->width = mf.width; | |
1662 | cam->height = mf.height; | |
1663 | ||
6a6c8786 | 1664 | /* 10. Use CEU scaling to scale to the requested user window. */ |
961801bb GL |
1665 | |
1666 | /* We cannot scale up */ | |
e622681d GL |
1667 | if (pix->width > ceu_sub_width) |
1668 | ceu_sub_width = pix->width; | |
961801bb | 1669 | |
e622681d GL |
1670 | if (pix->height > ceu_sub_height) |
1671 | ceu_sub_height = pix->height; | |
961801bb | 1672 | |
760697be GL |
1673 | pix->colorspace = mf.colorspace; |
1674 | ||
1675 | if (image_mode) { | |
1676 | /* Scale pix->{width x height} down to width x height */ | |
e622681d GL |
1677 | scale_h = calc_scale(ceu_sub_width, &pix->width); |
1678 | scale_v = calc_scale(ceu_sub_height, &pix->height); | |
760697be | 1679 | } else { |
e622681d GL |
1680 | pix->width = ceu_sub_width; |
1681 | pix->height = ceu_sub_height; | |
1682 | scale_h = 0; | |
1683 | scale_v = 0; | |
760697be | 1684 | } |
961801bb | 1685 | |
e622681d GL |
1686 | pcdev->cflcr = scale_h | (scale_v << 16); |
1687 | ||
1688 | /* | |
1689 | * We have calculated CFLCR, the actual configuration will be performed | |
1690 | * in sh_mobile_ceu_set_bus_param() | |
1691 | */ | |
1692 | ||
6a6c8786 | 1693 | dev_geo(dev, "10: W: %u : 0x%x = %u, H: %u : 0x%x = %u\n", |
e622681d GL |
1694 | ceu_sub_width, scale_h, pix->width, |
1695 | ceu_sub_height, scale_v, pix->height); | |
961801bb | 1696 | |
760697be | 1697 | cam->code = xlate->code; |
760697be | 1698 | icd->current_fmt = xlate; |
961801bb | 1699 | |
1edcc10d | 1700 | pcdev->field = field; |
6a6c8786 | 1701 | pcdev->image_mode = image_mode; |
961801bb GL |
1702 | |
1703 | return 0; | |
0d3244d6 MD |
1704 | } |
1705 | ||
d8fac217 GL |
1706 | static int sh_mobile_ceu_try_fmt(struct soc_camera_device *icd, |
1707 | struct v4l2_format *f) | |
0d3244d6 | 1708 | { |
9414de39 | 1709 | const struct soc_camera_format_xlate *xlate; |
904078f1 | 1710 | struct v4l2_pix_format *pix = &f->fmt.pix; |
c9c1f1c0 | 1711 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
760697be | 1712 | struct v4l2_mbus_framefmt mf; |
904078f1 | 1713 | __u32 pixfmt = pix->pixelformat; |
961801bb | 1714 | int width, height; |
ccab8a29 | 1715 | int ret; |
a2c8c68c | 1716 | |
7dfff953 | 1717 | dev_geo(icd->parent, "TRY_FMT(pix=0x%x, %ux%u)\n", |
b3b5020d GL |
1718 | pixfmt, pix->width, pix->height); |
1719 | ||
9414de39 MD |
1720 | xlate = soc_camera_xlate_by_fourcc(icd, pixfmt); |
1721 | if (!xlate) { | |
7dfff953 | 1722 | dev_warn(icd->parent, "Format %x not found\n", pixfmt); |
25c4d74e | 1723 | return -EINVAL; |
9414de39 | 1724 | } |
25c4d74e | 1725 | |
0d3244d6 MD |
1726 | /* FIXME: calculate using depth and bus width */ |
1727 | ||
904078f1 GL |
1728 | v4l_bound_align_image(&pix->width, 2, 2560, 1, |
1729 | &pix->height, 4, 1920, 2, 0); | |
0d3244d6 | 1730 | |
961801bb GL |
1731 | width = pix->width; |
1732 | height = pix->height; | |
1733 | ||
0d3244d6 | 1734 | /* limit to sensor capabilities */ |
760697be GL |
1735 | mf.width = pix->width; |
1736 | mf.height = pix->height; | |
1737 | mf.field = pix->field; | |
1738 | mf.code = xlate->code; | |
1739 | mf.colorspace = pix->colorspace; | |
1740 | ||
24105ebc | 1741 | ret = v4l2_device_call_until_err(sd->v4l2_dev, (long)icd, video, try_mbus_fmt, &mf); |
ccab8a29 KM |
1742 | if (ret < 0) |
1743 | return ret; | |
1744 | ||
760697be GL |
1745 | pix->width = mf.width; |
1746 | pix->height = mf.height; | |
1747 | pix->field = mf.field; | |
1748 | pix->colorspace = mf.colorspace; | |
1749 | ||
961801bb GL |
1750 | switch (pixfmt) { |
1751 | case V4L2_PIX_FMT_NV12: | |
1752 | case V4L2_PIX_FMT_NV21: | |
1753 | case V4L2_PIX_FMT_NV16: | |
1754 | case V4L2_PIX_FMT_NV61: | |
1755 | /* FIXME: check against rect_max after converting soc-camera */ | |
1756 | /* We can scale precisely, need a bigger image from camera */ | |
1757 | if (pix->width < width || pix->height < height) { | |
760697be GL |
1758 | /* |
1759 | * We presume, the sensor behaves sanely, i.e., if | |
1760 | * requested a bigger rectangle, it will not return a | |
1761 | * smaller one. | |
1762 | */ | |
1763 | mf.width = 2560; | |
1764 | mf.height = 1920; | |
24105ebc | 1765 | ret = v4l2_device_call_until_err(sd->v4l2_dev, (long)icd, video, |
b3b5020d | 1766 | try_mbus_fmt, &mf); |
961801bb GL |
1767 | if (ret < 0) { |
1768 | /* Shouldn't actually happen... */ | |
7dfff953 | 1769 | dev_err(icd->parent, |
760697be GL |
1770 | "FIXME: client try_fmt() = %d\n", ret); |
1771 | return ret; | |
961801bb GL |
1772 | } |
1773 | } | |
760697be GL |
1774 | /* We will scale exactly */ |
1775 | if (mf.width > width) | |
961801bb | 1776 | pix->width = width; |
760697be | 1777 | if (mf.height > height) |
961801bb | 1778 | pix->height = height; |
ccab8a29 KM |
1779 | } |
1780 | ||
7dfff953 | 1781 | dev_geo(icd->parent, "%s(): return %d, fmt 0x%x, %ux%u\n", |
b3b5020d GL |
1782 | __func__, ret, pix->pixelformat, pix->width, pix->height); |
1783 | ||
ccab8a29 | 1784 | return ret; |
0d3244d6 MD |
1785 | } |
1786 | ||
3dac322d GL |
1787 | static int sh_mobile_ceu_set_livecrop(struct soc_camera_device *icd, |
1788 | struct v4l2_crop *a) | |
1789 | { | |
1790 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); | |
7dfff953 | 1791 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
3dac322d GL |
1792 | struct sh_mobile_ceu_dev *pcdev = ici->priv; |
1793 | u32 out_width = icd->user_width, out_height = icd->user_height; | |
1794 | int ret; | |
1795 | ||
1796 | /* Freeze queue */ | |
1797 | pcdev->frozen = 1; | |
1798 | /* Wait for frame */ | |
1799 | ret = wait_for_completion_interruptible(&pcdev->complete); | |
1800 | /* Stop the client */ | |
1801 | ret = v4l2_subdev_call(sd, video, s_stream, 0); | |
1802 | if (ret < 0) | |
7dfff953 | 1803 | dev_warn(icd->parent, |
3dac322d GL |
1804 | "Client failed to stop the stream: %d\n", ret); |
1805 | else | |
1806 | /* Do the crop, if it fails, there's nothing more we can do */ | |
1807 | sh_mobile_ceu_set_crop(icd, a); | |
1808 | ||
7dfff953 | 1809 | dev_geo(icd->parent, "Output after crop: %ux%u\n", icd->user_width, icd->user_height); |
3dac322d GL |
1810 | |
1811 | if (icd->user_width != out_width || icd->user_height != out_height) { | |
1812 | struct v4l2_format f = { | |
1813 | .type = V4L2_BUF_TYPE_VIDEO_CAPTURE, | |
1814 | .fmt.pix = { | |
1815 | .width = out_width, | |
1816 | .height = out_height, | |
1817 | .pixelformat = icd->current_fmt->host_fmt->fourcc, | |
1818 | .field = pcdev->field, | |
1819 | .colorspace = icd->colorspace, | |
1820 | }, | |
1821 | }; | |
1822 | ret = sh_mobile_ceu_set_fmt(icd, &f); | |
1823 | if (!ret && (out_width != f.fmt.pix.width || | |
1824 | out_height != f.fmt.pix.height)) | |
1825 | ret = -EINVAL; | |
1826 | if (!ret) { | |
1827 | icd->user_width = out_width; | |
1828 | icd->user_height = out_height; | |
1829 | ret = sh_mobile_ceu_set_bus_param(icd, | |
1830 | icd->current_fmt->host_fmt->fourcc); | |
1831 | } | |
1832 | } | |
1833 | ||
1834 | /* Thaw the queue */ | |
1835 | pcdev->frozen = 0; | |
1836 | spin_lock_irq(&pcdev->lock); | |
1837 | sh_mobile_ceu_capture(pcdev); | |
1838 | spin_unlock_irq(&pcdev->lock); | |
1839 | /* Start the client */ | |
1840 | ret = v4l2_subdev_call(sd, video, s_stream, 1); | |
1841 | return ret; | |
1842 | } | |
1843 | ||
0d3244d6 MD |
1844 | static unsigned int sh_mobile_ceu_poll(struct file *file, poll_table *pt) |
1845 | { | |
57bee29d | 1846 | struct soc_camera_device *icd = file->private_data; |
0d3244d6 | 1847 | |
a616898d | 1848 | return vb2_poll(&icd->vb2_vidq, file, pt); |
0d3244d6 MD |
1849 | } |
1850 | ||
1851 | static int sh_mobile_ceu_querycap(struct soc_camera_host *ici, | |
1852 | struct v4l2_capability *cap) | |
1853 | { | |
1854 | strlcpy(cap->card, "SuperH_Mobile_CEU", sizeof(cap->card)); | |
0d3244d6 MD |
1855 | cap->capabilities = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING; |
1856 | return 0; | |
1857 | } | |
1858 | ||
a616898d GL |
1859 | static int sh_mobile_ceu_init_videobuf(struct vb2_queue *q, |
1860 | struct soc_camera_device *icd) | |
0d3244d6 | 1861 | { |
a616898d GL |
1862 | q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; |
1863 | q->io_modes = VB2_MMAP | VB2_USERPTR; | |
1864 | q->drv_priv = icd; | |
1865 | q->ops = &sh_mobile_ceu_videobuf_ops; | |
1866 | q->mem_ops = &vb2_dma_contig_memops; | |
1867 | q->buf_struct_size = sizeof(struct sh_mobile_ceu_buffer); | |
1868 | ||
1869 | return vb2_queue_init(q); | |
0d3244d6 MD |
1870 | } |
1871 | ||
4a6110bc GL |
1872 | static int sh_mobile_ceu_get_ctrl(struct soc_camera_device *icd, |
1873 | struct v4l2_control *ctrl) | |
1874 | { | |
7dfff953 | 1875 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
4a6110bc GL |
1876 | struct sh_mobile_ceu_dev *pcdev = ici->priv; |
1877 | u32 val; | |
1878 | ||
1879 | switch (ctrl->id) { | |
1880 | case V4L2_CID_SHARPNESS: | |
1881 | val = ceu_read(pcdev, CLFCR); | |
1882 | ctrl->value = val ^ 1; | |
1883 | return 0; | |
1884 | } | |
1885 | return -ENOIOCTLCMD; | |
1886 | } | |
1887 | ||
1888 | static int sh_mobile_ceu_set_ctrl(struct soc_camera_device *icd, | |
1889 | struct v4l2_control *ctrl) | |
1890 | { | |
7dfff953 | 1891 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
4a6110bc GL |
1892 | struct sh_mobile_ceu_dev *pcdev = ici->priv; |
1893 | ||
1894 | switch (ctrl->id) { | |
1895 | case V4L2_CID_SHARPNESS: | |
760697be | 1896 | switch (icd->current_fmt->host_fmt->fourcc) { |
4a6110bc GL |
1897 | case V4L2_PIX_FMT_NV12: |
1898 | case V4L2_PIX_FMT_NV21: | |
1899 | case V4L2_PIX_FMT_NV16: | |
1900 | case V4L2_PIX_FMT_NV61: | |
1901 | ceu_write(pcdev, CLFCR, !ctrl->value); | |
1902 | return 0; | |
1903 | } | |
1904 | return -EINVAL; | |
1905 | } | |
1906 | return -ENOIOCTLCMD; | |
1907 | } | |
1908 | ||
1909 | static const struct v4l2_queryctrl sh_mobile_ceu_controls[] = { | |
1910 | { | |
1911 | .id = V4L2_CID_SHARPNESS, | |
1912 | .type = V4L2_CTRL_TYPE_BOOLEAN, | |
1913 | .name = "Low-pass filter", | |
1914 | .minimum = 0, | |
1915 | .maximum = 1, | |
1916 | .step = 1, | |
1917 | .default_value = 0, | |
1918 | }, | |
1919 | }; | |
1920 | ||
0d3244d6 MD |
1921 | static struct soc_camera_host_ops sh_mobile_ceu_host_ops = { |
1922 | .owner = THIS_MODULE, | |
1923 | .add = sh_mobile_ceu_add_device, | |
1924 | .remove = sh_mobile_ceu_remove_device, | |
9414de39 | 1925 | .get_formats = sh_mobile_ceu_get_formats, |
904078f1 | 1926 | .put_formats = sh_mobile_ceu_put_formats, |
e622681d | 1927 | .get_crop = sh_mobile_ceu_get_crop, |
09e231b3 | 1928 | .set_crop = sh_mobile_ceu_set_crop, |
3dac322d | 1929 | .set_livecrop = sh_mobile_ceu_set_livecrop, |
d8fac217 GL |
1930 | .set_fmt = sh_mobile_ceu_set_fmt, |
1931 | .try_fmt = sh_mobile_ceu_try_fmt, | |
4a6110bc GL |
1932 | .set_ctrl = sh_mobile_ceu_set_ctrl, |
1933 | .get_ctrl = sh_mobile_ceu_get_ctrl, | |
0d3244d6 MD |
1934 | .poll = sh_mobile_ceu_poll, |
1935 | .querycap = sh_mobile_ceu_querycap, | |
0d3244d6 | 1936 | .set_bus_param = sh_mobile_ceu_set_bus_param, |
a616898d | 1937 | .init_videobuf2 = sh_mobile_ceu_init_videobuf, |
4a6110bc GL |
1938 | .controls = sh_mobile_ceu_controls, |
1939 | .num_controls = ARRAY_SIZE(sh_mobile_ceu_controls), | |
0d3244d6 MD |
1940 | }; |
1941 | ||
b3b5020d GL |
1942 | struct bus_wait { |
1943 | struct notifier_block notifier; | |
1944 | struct completion completion; | |
1945 | struct device *dev; | |
1946 | }; | |
1947 | ||
1948 | static int bus_notify(struct notifier_block *nb, | |
1949 | unsigned long action, void *data) | |
1950 | { | |
1951 | struct device *dev = data; | |
1952 | struct bus_wait *wait = container_of(nb, struct bus_wait, notifier); | |
1953 | ||
1954 | if (wait->dev != dev) | |
1955 | return NOTIFY_DONE; | |
1956 | ||
1957 | switch (action) { | |
1958 | case BUS_NOTIFY_UNBOUND_DRIVER: | |
1959 | /* Protect from module unloading */ | |
1960 | wait_for_completion(&wait->completion); | |
1961 | return NOTIFY_OK; | |
1962 | } | |
1963 | return NOTIFY_DONE; | |
1964 | } | |
1965 | ||
979ea1dd | 1966 | static int __devinit sh_mobile_ceu_probe(struct platform_device *pdev) |
0d3244d6 MD |
1967 | { |
1968 | struct sh_mobile_ceu_dev *pcdev; | |
1969 | struct resource *res; | |
1970 | void __iomem *base; | |
1971 | unsigned int irq; | |
1972 | int err = 0; | |
b3b5020d GL |
1973 | struct bus_wait wait = { |
1974 | .completion = COMPLETION_INITIALIZER_ONSTACK(wait.completion), | |
1975 | .notifier.notifier_call = bus_notify, | |
1976 | }; | |
6b526fed | 1977 | struct sh_mobile_ceu_companion *csi2; |
0d3244d6 MD |
1978 | |
1979 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); | |
1980 | irq = platform_get_irq(pdev, 0); | |
b89fc2e5 | 1981 | if (!res || (int)irq <= 0) { |
0d3244d6 MD |
1982 | dev_err(&pdev->dev, "Not enough CEU platform resources.\n"); |
1983 | err = -ENODEV; | |
1984 | goto exit; | |
1985 | } | |
1986 | ||
1987 | pcdev = kzalloc(sizeof(*pcdev), GFP_KERNEL); | |
1988 | if (!pcdev) { | |
1989 | dev_err(&pdev->dev, "Could not allocate pcdev\n"); | |
1990 | err = -ENOMEM; | |
1991 | goto exit; | |
1992 | } | |
1993 | ||
0d3244d6 MD |
1994 | INIT_LIST_HEAD(&pcdev->capture); |
1995 | spin_lock_init(&pcdev->lock); | |
3dac322d | 1996 | init_completion(&pcdev->complete); |
0d3244d6 MD |
1997 | |
1998 | pcdev->pdata = pdev->dev.platform_data; | |
1999 | if (!pcdev->pdata) { | |
2000 | err = -EINVAL; | |
2001 | dev_err(&pdev->dev, "CEU platform data not set.\n"); | |
2002 | goto exit_kfree; | |
2003 | } | |
2004 | ||
eb6c8558 | 2005 | base = ioremap_nocache(res->start, resource_size(res)); |
0d3244d6 MD |
2006 | if (!base) { |
2007 | err = -ENXIO; | |
2008 | dev_err(&pdev->dev, "Unable to ioremap CEU registers.\n"); | |
2009 | goto exit_kfree; | |
2010 | } | |
2011 | ||
2012 | pcdev->irq = irq; | |
2013 | pcdev->base = base; | |
2014 | pcdev->video_limit = 0; /* only enabled if second resource exists */ | |
0d3244d6 MD |
2015 | |
2016 | res = platform_get_resource(pdev, IORESOURCE_MEM, 1); | |
2017 | if (res) { | |
2018 | err = dma_declare_coherent_memory(&pdev->dev, res->start, | |
2019 | res->start, | |
eb6c8558 | 2020 | resource_size(res), |
0d3244d6 MD |
2021 | DMA_MEMORY_MAP | |
2022 | DMA_MEMORY_EXCLUSIVE); | |
2023 | if (!err) { | |
2024 | dev_err(&pdev->dev, "Unable to declare CEU memory.\n"); | |
2025 | err = -ENXIO; | |
2026 | goto exit_iounmap; | |
2027 | } | |
2028 | ||
eb6c8558 | 2029 | pcdev->video_limit = resource_size(res); |
0d3244d6 MD |
2030 | } |
2031 | ||
2032 | /* request irq */ | |
2033 | err = request_irq(pcdev->irq, sh_mobile_ceu_irq, IRQF_DISABLED, | |
af128a10 | 2034 | dev_name(&pdev->dev), pcdev); |
0d3244d6 MD |
2035 | if (err) { |
2036 | dev_err(&pdev->dev, "Unable to register CEU interrupt.\n"); | |
2037 | goto exit_release_mem; | |
2038 | } | |
2039 | ||
6d1386c6 MD |
2040 | pm_suspend_ignore_children(&pdev->dev, true); |
2041 | pm_runtime_enable(&pdev->dev); | |
2042 | pm_runtime_resume(&pdev->dev); | |
a42b6dd6 | 2043 | |
0d3244d6 | 2044 | pcdev->ici.priv = pcdev; |
979ea1dd | 2045 | pcdev->ici.v4l2_dev.dev = &pdev->dev; |
0d3244d6 | 2046 | pcdev->ici.nr = pdev->id; |
af128a10 KS |
2047 | pcdev->ici.drv_name = dev_name(&pdev->dev); |
2048 | pcdev->ici.ops = &sh_mobile_ceu_host_ops; | |
0d3244d6 | 2049 | |
6b526fed GL |
2050 | pcdev->alloc_ctx = vb2_dma_contig_init_ctx(&pdev->dev); |
2051 | if (IS_ERR(pcdev->alloc_ctx)) { | |
2052 | err = PTR_ERR(pcdev->alloc_ctx); | |
2053 | goto exit_free_clk; | |
2054 | } | |
2055 | ||
2056 | err = soc_camera_host_register(&pcdev->ici); | |
2057 | if (err) | |
2058 | goto exit_free_ctx; | |
2059 | ||
b3b5020d | 2060 | /* CSI2 interfacing */ |
6b526fed | 2061 | csi2 = pcdev->pdata->csi2; |
b3b5020d | 2062 | if (csi2) { |
6b526fed GL |
2063 | struct platform_device *csi2_pdev = |
2064 | platform_device_alloc("sh-mobile-csi2", csi2->id); | |
2065 | struct sh_csi2_pdata *csi2_pdata = csi2->platform_data; | |
2066 | ||
2067 | if (!csi2_pdev) { | |
2068 | err = -ENOMEM; | |
2069 | goto exit_host_unregister; | |
2070 | } | |
2071 | ||
2072 | pcdev->csi2_pdev = csi2_pdev; | |
2073 | ||
2074 | err = platform_device_add_data(csi2_pdev, csi2_pdata, sizeof(*csi2_pdata)); | |
2075 | if (err < 0) | |
2076 | goto exit_pdev_put; | |
2077 | ||
2078 | csi2_pdata = csi2_pdev->dev.platform_data; | |
2079 | csi2_pdata->v4l2_dev = &pcdev->ici.v4l2_dev; | |
2080 | ||
2081 | csi2_pdev->resource = csi2->resource; | |
2082 | csi2_pdev->num_resources = csi2->num_resources; | |
2083 | ||
2084 | err = platform_device_add(csi2_pdev); | |
2085 | if (err < 0) | |
2086 | goto exit_pdev_put; | |
2087 | ||
2088 | wait.dev = &csi2_pdev->dev; | |
b3b5020d GL |
2089 | |
2090 | err = bus_register_notifier(&platform_bus_type, &wait.notifier); | |
2091 | if (err < 0) | |
6b526fed | 2092 | goto exit_pdev_unregister; |
b3b5020d GL |
2093 | |
2094 | /* | |
2095 | * From this point the driver module will not unload, until | |
2096 | * we complete the completion. | |
2097 | */ | |
2098 | ||
6b526fed | 2099 | if (!csi2_pdev->dev.driver) { |
b3b5020d GL |
2100 | complete(&wait.completion); |
2101 | /* Either too late, or probing failed */ | |
2102 | bus_unregister_notifier(&platform_bus_type, &wait.notifier); | |
2103 | err = -ENXIO; | |
6b526fed | 2104 | goto exit_pdev_unregister; |
b3b5020d GL |
2105 | } |
2106 | ||
2107 | /* | |
2108 | * The module is still loaded, in the worst case it is hanging | |
2109 | * in device release on our completion. So, _now_ dereferencing | |
2110 | * the "owner" is safe! | |
2111 | */ | |
2112 | ||
6b526fed | 2113 | err = try_module_get(csi2_pdev->dev.driver->owner); |
b3b5020d GL |
2114 | |
2115 | /* Let notifier complete, if it has been locked */ | |
2116 | complete(&wait.completion); | |
2117 | bus_unregister_notifier(&platform_bus_type, &wait.notifier); | |
2118 | if (!err) { | |
2119 | err = -ENODEV; | |
6b526fed | 2120 | goto exit_pdev_unregister; |
b3b5020d GL |
2121 | } |
2122 | } | |
2123 | ||
0d3244d6 MD |
2124 | return 0; |
2125 | ||
6b526fed GL |
2126 | exit_pdev_unregister: |
2127 | platform_device_del(pcdev->csi2_pdev); | |
2128 | exit_pdev_put: | |
2129 | pcdev->csi2_pdev->resource = NULL; | |
2130 | platform_device_put(pcdev->csi2_pdev); | |
2131 | exit_host_unregister: | |
2132 | soc_camera_host_unregister(&pcdev->ici); | |
a616898d GL |
2133 | exit_free_ctx: |
2134 | vb2_dma_contig_cleanup_ctx(pcdev->alloc_ctx); | |
055e05a0 KM |
2135 | exit_free_clk: |
2136 | pm_runtime_disable(&pdev->dev); | |
0d3244d6 MD |
2137 | free_irq(pcdev->irq, pcdev); |
2138 | exit_release_mem: | |
2139 | if (platform_get_resource(pdev, IORESOURCE_MEM, 1)) | |
2140 | dma_release_declared_memory(&pdev->dev); | |
2141 | exit_iounmap: | |
2142 | iounmap(base); | |
2143 | exit_kfree: | |
2144 | kfree(pcdev); | |
2145 | exit: | |
2146 | return err; | |
2147 | } | |
2148 | ||
979ea1dd | 2149 | static int __devexit sh_mobile_ceu_remove(struct platform_device *pdev) |
0d3244d6 | 2150 | { |
eff505fa GL |
2151 | struct soc_camera_host *soc_host = to_soc_camera_host(&pdev->dev); |
2152 | struct sh_mobile_ceu_dev *pcdev = container_of(soc_host, | |
2153 | struct sh_mobile_ceu_dev, ici); | |
6b526fed | 2154 | struct platform_device *csi2_pdev = pcdev->csi2_pdev; |
0d3244d6 | 2155 | |
eff505fa | 2156 | soc_camera_host_unregister(soc_host); |
055e05a0 | 2157 | pm_runtime_disable(&pdev->dev); |
0d3244d6 MD |
2158 | free_irq(pcdev->irq, pcdev); |
2159 | if (platform_get_resource(pdev, IORESOURCE_MEM, 1)) | |
2160 | dma_release_declared_memory(&pdev->dev); | |
2161 | iounmap(pcdev->base); | |
a616898d | 2162 | vb2_dma_contig_cleanup_ctx(pcdev->alloc_ctx); |
6b526fed GL |
2163 | if (csi2_pdev && csi2_pdev->dev.driver) { |
2164 | struct module *csi2_drv = csi2_pdev->dev.driver->owner; | |
2165 | platform_device_del(csi2_pdev); | |
2166 | csi2_pdev->resource = NULL; | |
2167 | platform_device_put(csi2_pdev); | |
2168 | module_put(csi2_drv); | |
2169 | } | |
0d3244d6 | 2170 | kfree(pcdev); |
b3b5020d | 2171 | |
0d3244d6 MD |
2172 | return 0; |
2173 | } | |
2174 | ||
6d1386c6 MD |
2175 | static int sh_mobile_ceu_runtime_nop(struct device *dev) |
2176 | { | |
2177 | /* Runtime PM callback shared between ->runtime_suspend() | |
2178 | * and ->runtime_resume(). Simply returns success. | |
2179 | * | |
2180 | * This driver re-initializes all registers after | |
2181 | * pm_runtime_get_sync() anyway so there is no need | |
2182 | * to save and restore registers here. | |
2183 | */ | |
2184 | return 0; | |
2185 | } | |
2186 | ||
47145210 | 2187 | static const struct dev_pm_ops sh_mobile_ceu_dev_pm_ops = { |
6d1386c6 MD |
2188 | .runtime_suspend = sh_mobile_ceu_runtime_nop, |
2189 | .runtime_resume = sh_mobile_ceu_runtime_nop, | |
2190 | }; | |
2191 | ||
0d3244d6 MD |
2192 | static struct platform_driver sh_mobile_ceu_driver = { |
2193 | .driver = { | |
2194 | .name = "sh_mobile_ceu", | |
6d1386c6 | 2195 | .pm = &sh_mobile_ceu_dev_pm_ops, |
0d3244d6 MD |
2196 | }, |
2197 | .probe = sh_mobile_ceu_probe, | |
50e55fd1 | 2198 | .remove = __devexit_p(sh_mobile_ceu_remove), |
0d3244d6 MD |
2199 | }; |
2200 | ||
2201 | static int __init sh_mobile_ceu_init(void) | |
2202 | { | |
b3b5020d GL |
2203 | /* Whatever return code */ |
2204 | request_module("sh_mobile_csi2"); | |
0d3244d6 MD |
2205 | return platform_driver_register(&sh_mobile_ceu_driver); |
2206 | } | |
2207 | ||
2208 | static void __exit sh_mobile_ceu_exit(void) | |
2209 | { | |
01c1e4ca | 2210 | platform_driver_unregister(&sh_mobile_ceu_driver); |
0d3244d6 MD |
2211 | } |
2212 | ||
2213 | module_init(sh_mobile_ceu_init); | |
2214 | module_exit(sh_mobile_ceu_exit); | |
2215 | ||
2216 | MODULE_DESCRIPTION("SuperH Mobile CEU driver"); | |
2217 | MODULE_AUTHOR("Magnus Damm"); | |
2218 | MODULE_LICENSE("GPL"); | |
64dc3c1a | 2219 | MODULE_VERSION("0.0.6"); |
40e2e092 | 2220 | MODULE_ALIAS("platform:sh_mobile_ceu"); |