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; | |
0d3244d6 MD |
93 | }; |
94 | ||
95 | struct sh_mobile_ceu_dev { | |
0d3244d6 MD |
96 | struct soc_camera_host ici; |
97 | struct soc_camera_device *icd; | |
6b526fed | 98 | struct platform_device *csi2_pdev; |
0d3244d6 MD |
99 | |
100 | unsigned int irq; | |
101 | void __iomem *base; | |
b5518a41 GL |
102 | size_t video_limit; |
103 | size_t buf_total; | |
0d3244d6 | 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 | ||
48e971cd GL |
115 | /* static max sizes either from platform data or default */ |
116 | int max_width; | |
117 | int max_height; | |
118 | ||
1edcc10d | 119 | enum v4l2_field field; |
a616898d | 120 | int sequence; |
1edcc10d | 121 | |
904078f1 GL |
122 | unsigned int image_mode:1; |
123 | unsigned int is_16bit:1; | |
3dac322d | 124 | unsigned int frozen:1; |
904078f1 GL |
125 | }; |
126 | ||
127 | struct sh_mobile_ceu_cam { | |
eec5ce01 | 128 | /* CEU offsets within the camera output, before the CEU scaler */ |
e622681d GL |
129 | unsigned int ceu_left; |
130 | unsigned int ceu_top; | |
131 | /* Client output, as seen by the CEU */ | |
132 | unsigned int width; | |
133 | unsigned int height; | |
134 | /* | |
135 | * User window from S_CROP / G_CROP, produced by client cropping and | |
136 | * scaling, CEU scaling and CEU cropping, mapped back onto the client | |
137 | * input window | |
138 | */ | |
139 | struct v4l2_rect subrect; | |
140 | /* Camera cropping rectangle */ | |
141 | struct v4l2_rect rect; | |
760697be GL |
142 | const struct soc_mbus_pixelfmt *extra_fmt; |
143 | enum v4l2_mbus_pixelcode code; | |
0d3244d6 MD |
144 | }; |
145 | ||
a616898d GL |
146 | static struct sh_mobile_ceu_buffer *to_ceu_vb(struct vb2_buffer *vb) |
147 | { | |
148 | return container_of(vb, struct sh_mobile_ceu_buffer, vb); | |
149 | } | |
150 | ||
0d3244d6 | 151 | static void ceu_write(struct sh_mobile_ceu_dev *priv, |
7a1a8164 | 152 | unsigned long reg_offs, u32 data) |
0d3244d6 MD |
153 | { |
154 | iowrite32(data, priv->base + reg_offs); | |
155 | } | |
156 | ||
7a1a8164 | 157 | static u32 ceu_read(struct sh_mobile_ceu_dev *priv, unsigned long reg_offs) |
0d3244d6 MD |
158 | { |
159 | return ioread32(priv->base + reg_offs); | |
160 | } | |
161 | ||
b1de7aeb KM |
162 | static int sh_mobile_ceu_soft_reset(struct sh_mobile_ceu_dev *pcdev) |
163 | { | |
164 | int i, success = 0; | |
165 | struct soc_camera_device *icd = pcdev->icd; | |
166 | ||
167 | ceu_write(pcdev, CAPSR, 1 << 16); /* reset */ | |
168 | ||
169 | /* wait CSTSR.CPTON bit */ | |
170 | for (i = 0; i < 1000; i++) { | |
171 | if (!(ceu_read(pcdev, CSTSR) & 1)) { | |
172 | success++; | |
173 | break; | |
174 | } | |
175 | udelay(1); | |
176 | } | |
177 | ||
178 | /* wait CAPSR.CPKIL bit */ | |
179 | for (i = 0; i < 1000; i++) { | |
180 | if (!(ceu_read(pcdev, CAPSR) & (1 << 16))) { | |
181 | success++; | |
182 | break; | |
183 | } | |
184 | udelay(1); | |
185 | } | |
186 | ||
187 | ||
188 | if (2 != success) { | |
7dfff953 | 189 | dev_warn(icd->pdev, "soft reset time out\n"); |
b1de7aeb KM |
190 | return -EIO; |
191 | } | |
192 | ||
193 | return 0; | |
194 | } | |
195 | ||
0d3244d6 MD |
196 | /* |
197 | * Videobuf operations | |
198 | */ | |
b5518a41 GL |
199 | |
200 | /* | |
201 | * .queue_setup() is called to check, whether the driver can accept the | |
202 | * requested number of buffers and to fill in plane sizes | |
203 | * for the current frame format if required | |
204 | */ | |
a616898d | 205 | static int sh_mobile_ceu_videobuf_setup(struct vb2_queue *vq, |
fc714e70 | 206 | const struct v4l2_format *fmt, |
a616898d | 207 | unsigned int *count, unsigned int *num_planes, |
035aa147 | 208 | unsigned int sizes[], void *alloc_ctxs[]) |
0d3244d6 | 209 | { |
a616898d | 210 | struct soc_camera_device *icd = container_of(vq, struct soc_camera_device, vb2_vidq); |
7dfff953 | 211 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
0d3244d6 | 212 | struct sh_mobile_ceu_dev *pcdev = ici->priv; |
0d3244d6 | 213 | |
b5518a41 GL |
214 | if (fmt) { |
215 | const struct soc_camera_format_xlate *xlate = soc_camera_xlate_by_fourcc(icd, | |
216 | fmt->fmt.pix.pixelformat); | |
bed8d803 LP |
217 | unsigned int bytes_per_line; |
218 | int ret; | |
2b61d46e | 219 | |
b5518a41 GL |
220 | if (!xlate) |
221 | return -EINVAL; | |
2b61d46e | 222 | |
bed8d803 LP |
223 | ret = soc_mbus_bytes_per_line(fmt->fmt.pix.width, |
224 | xlate->host_fmt); | |
225 | if (ret < 0) | |
226 | return ret; | |
2b61d46e | 227 | |
bed8d803 LP |
228 | bytes_per_line = max_t(u32, fmt->fmt.pix.bytesperline, ret); |
229 | ||
230 | ret = soc_mbus_image_size(xlate->host_fmt, bytes_per_line, | |
231 | fmt->fmt.pix.height); | |
232 | if (ret < 0) | |
233 | return ret; | |
234 | ||
235 | sizes[0] = max_t(u32, fmt->fmt.pix.sizeimage, ret); | |
b5518a41 GL |
236 | } else { |
237 | /* Called from VIDIOC_REQBUFS or in compatibility mode */ | |
2b61d46e | 238 | sizes[0] = icd->sizeimage; |
b5518a41 | 239 | } |
a616898d | 240 | |
a616898d | 241 | alloc_ctxs[0] = pcdev->alloc_ctx; |
0d3244d6 | 242 | |
b5518a41 GL |
243 | if (!vq->num_buffers) |
244 | pcdev->sequence = 0; | |
245 | ||
a616898d | 246 | if (!*count) |
0d3244d6 MD |
247 | *count = 2; |
248 | ||
b5518a41 GL |
249 | /* If *num_planes != 0, we have already verified *count. */ |
250 | if (pcdev->video_limit && !*num_planes) { | |
251 | size_t size = PAGE_ALIGN(sizes[0]) * *count; | |
252 | ||
253 | if (size + pcdev->buf_total > pcdev->video_limit) | |
254 | *count = (pcdev->video_limit - pcdev->buf_total) / | |
255 | PAGE_ALIGN(sizes[0]); | |
0d3244d6 MD |
256 | } |
257 | ||
b5518a41 GL |
258 | *num_planes = 1; |
259 | ||
035aa147 | 260 | dev_dbg(icd->parent, "count=%d, size=%u\n", *count, sizes[0]); |
0d3244d6 MD |
261 | |
262 | return 0; | |
263 | } | |
264 | ||
7a1a8164 MD |
265 | #define CEU_CETCR_MAGIC 0x0317f313 /* acknowledge magical interrupt sources */ |
266 | #define CEU_CETCR_IGRW (1 << 4) /* prohibited register access interrupt bit */ | |
267 | #define CEU_CEIER_CPEIE (1 << 0) /* one-frame capture end interrupt */ | |
5cf93f1d | 268 | #define CEU_CEIER_VBP (1 << 20) /* vbp error */ |
7a1a8164 | 269 | #define CEU_CAPCR_CTNCP (1 << 16) /* continuous capture mode (if set) */ |
5cf93f1d | 270 | #define CEU_CEIER_MASK (CEU_CEIER_CPEIE | CEU_CEIER_VBP) |
7a1a8164 MD |
271 | |
272 | ||
5cf93f1d KM |
273 | /* |
274 | * return value doesn't reflex the success/failure to queue the new buffer, | |
275 | * but rather the status of the previous buffer. | |
276 | */ | |
277 | static int sh_mobile_ceu_capture(struct sh_mobile_ceu_dev *pcdev) | |
0d3244d6 | 278 | { |
8be65dc5 | 279 | struct soc_camera_device *icd = pcdev->icd; |
ccab8a29 | 280 | dma_addr_t phys_addr_top, phys_addr_bottom; |
1edcc10d KM |
281 | unsigned long top1, top2; |
282 | unsigned long bottom1, bottom2; | |
5cf93f1d | 283 | u32 status; |
15f517e2 | 284 | bool planar; |
5cf93f1d | 285 | int ret = 0; |
7a1a8164 | 286 | |
5d28d525 GL |
287 | /* |
288 | * The hardware is _very_ picky about this sequence. Especially | |
7a1a8164 MD |
289 | * the CEU_CETCR_MAGIC value. It seems like we need to acknowledge |
290 | * several not-so-well documented interrupt sources in CETCR. | |
291 | */ | |
5cf93f1d KM |
292 | ceu_write(pcdev, CEIER, ceu_read(pcdev, CEIER) & ~CEU_CEIER_MASK); |
293 | status = ceu_read(pcdev, CETCR); | |
294 | ceu_write(pcdev, CETCR, ~status & CEU_CETCR_MAGIC); | |
3dac322d GL |
295 | if (!pcdev->frozen) |
296 | ceu_write(pcdev, CEIER, ceu_read(pcdev, CEIER) | CEU_CEIER_MASK); | |
7a1a8164 MD |
297 | ceu_write(pcdev, CAPCR, ceu_read(pcdev, CAPCR) & ~CEU_CAPCR_CTNCP); |
298 | ceu_write(pcdev, CETCR, CEU_CETCR_MAGIC ^ CEU_CETCR_IGRW); | |
0d3244d6 | 299 | |
5cf93f1d KM |
300 | /* |
301 | * When a VBP interrupt occurs, a capture end interrupt does not occur | |
302 | * and the image of that frame is not captured correctly. So, soft reset | |
303 | * is needed here. | |
304 | */ | |
305 | if (status & CEU_CEIER_VBP) { | |
306 | sh_mobile_ceu_soft_reset(pcdev); | |
307 | ret = -EIO; | |
308 | } | |
309 | ||
3dac322d GL |
310 | if (pcdev->frozen) { |
311 | complete(&pcdev->complete); | |
312 | return ret; | |
313 | } | |
314 | ||
8be65dc5 | 315 | if (!pcdev->active) |
5cf93f1d | 316 | return ret; |
8be65dc5 | 317 | |
1edcc10d KM |
318 | if (V4L2_FIELD_INTERLACED_BT == pcdev->field) { |
319 | top1 = CDBYR; | |
320 | top2 = CDBCR; | |
321 | bottom1 = CDAYR; | |
322 | bottom2 = CDACR; | |
323 | } else { | |
324 | top1 = CDAYR; | |
325 | top2 = CDACR; | |
326 | bottom1 = CDBYR; | |
327 | bottom2 = CDBCR; | |
328 | } | |
329 | ||
ba7fcb0c | 330 | phys_addr_top = vb2_dma_contig_plane_dma_addr(pcdev->active, 0); |
a616898d | 331 | |
760697be | 332 | switch (icd->current_fmt->host_fmt->fourcc) { |
8be65dc5 MD |
333 | case V4L2_PIX_FMT_NV12: |
334 | case V4L2_PIX_FMT_NV21: | |
9e4a56d2 MD |
335 | case V4L2_PIX_FMT_NV16: |
336 | case V4L2_PIX_FMT_NV61: | |
15f517e2 GL |
337 | planar = true; |
338 | break; | |
339 | default: | |
340 | planar = false; | |
341 | } | |
342 | ||
343 | ceu_write(pcdev, top1, phys_addr_top); | |
344 | if (V4L2_FIELD_NONE != pcdev->field) { | |
345 | if (planar) | |
346 | phys_addr_bottom = phys_addr_top + icd->user_width; | |
347 | else | |
1c0f95ee | 348 | phys_addr_bottom = phys_addr_top + icd->bytesperline; |
15f517e2 GL |
349 | ceu_write(pcdev, bottom1, phys_addr_bottom); |
350 | } | |
351 | ||
352 | if (planar) { | |
6a6c8786 GL |
353 | phys_addr_top += icd->user_width * |
354 | icd->user_height; | |
1edcc10d KM |
355 | ceu_write(pcdev, top2, phys_addr_top); |
356 | if (V4L2_FIELD_NONE != pcdev->field) { | |
357 | phys_addr_bottom = phys_addr_top + icd->user_width; | |
358 | ceu_write(pcdev, bottom2, phys_addr_bottom); | |
ccab8a29 | 359 | } |
0d3244d6 | 360 | } |
8be65dc5 | 361 | |
8be65dc5 | 362 | ceu_write(pcdev, CAPSR, 0x1); /* start capture */ |
5cf93f1d KM |
363 | |
364 | return ret; | |
0d3244d6 MD |
365 | } |
366 | ||
a616898d | 367 | static int sh_mobile_ceu_videobuf_prepare(struct vb2_buffer *vb) |
b5518a41 GL |
368 | { |
369 | struct sh_mobile_ceu_buffer *buf = to_ceu_vb(vb); | |
370 | ||
371 | /* Added list head initialization on alloc */ | |
372 | WARN(!list_empty(&buf->queue), "Buffer %p on queue!\n", vb); | |
373 | ||
374 | return 0; | |
375 | } | |
376 | ||
377 | static void sh_mobile_ceu_videobuf_queue(struct vb2_buffer *vb) | |
0d3244d6 | 378 | { |
a616898d | 379 | struct soc_camera_device *icd = container_of(vb->vb2_queue, struct soc_camera_device, vb2_vidq); |
b5518a41 GL |
380 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
381 | struct sh_mobile_ceu_dev *pcdev = ici->priv; | |
382 | struct sh_mobile_ceu_buffer *buf = to_ceu_vb(vb); | |
383 | unsigned long size; | |
760697be | 384 | |
2b61d46e | 385 | size = icd->sizeimage; |
b5518a41 GL |
386 | |
387 | if (vb2_plane_size(vb, 0) < size) { | |
388 | dev_err(icd->parent, "Buffer #%d too small (%lu < %lu)\n", | |
389 | vb->v4l2_buf.index, vb2_plane_size(vb, 0), size); | |
390 | goto error; | |
391 | } | |
392 | ||
393 | vb2_set_plane_payload(vb, 0, size); | |
0d3244d6 | 394 | |
7dfff953 | 395 | dev_dbg(icd->parent, "%s (vb=0x%p) 0x%p %lu\n", __func__, |
a616898d | 396 | vb, vb2_plane_vaddr(vb, 0), vb2_get_plane_payload(vb, 0)); |
0d3244d6 | 397 | |
0d3244d6 | 398 | #ifdef DEBUG |
5d28d525 GL |
399 | /* |
400 | * This can be useful if you want to see if we actually fill | |
401 | * the buffer with something | |
402 | */ | |
a616898d GL |
403 | if (vb2_plane_vaddr(vb, 0)) |
404 | memset(vb2_plane_vaddr(vb, 0), 0xaa, vb2_get_plane_payload(vb, 0)); | |
0d3244d6 MD |
405 | #endif |
406 | ||
3dac322d | 407 | spin_lock_irq(&pcdev->lock); |
a616898d | 408 | list_add_tail(&buf->queue, &pcdev->capture); |
0d3244d6 MD |
409 | |
410 | if (!pcdev->active) { | |
5cf93f1d KM |
411 | /* |
412 | * Because there were no active buffer at this moment, | |
413 | * we are not interested in the return value of | |
414 | * sh_mobile_ceu_capture here. | |
415 | */ | |
0d3244d6 MD |
416 | pcdev->active = vb; |
417 | sh_mobile_ceu_capture(pcdev); | |
418 | } | |
3dac322d | 419 | spin_unlock_irq(&pcdev->lock); |
b5518a41 GL |
420 | |
421 | return; | |
422 | ||
423 | error: | |
424 | vb2_buffer_done(vb, VB2_BUF_STATE_ERROR); | |
0d3244d6 MD |
425 | } |
426 | ||
a616898d | 427 | static void sh_mobile_ceu_videobuf_release(struct vb2_buffer *vb) |
0d3244d6 | 428 | { |
a616898d | 429 | struct soc_camera_device *icd = container_of(vb->vb2_queue, struct soc_camera_device, vb2_vidq); |
7dfff953 | 430 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
a616898d | 431 | struct sh_mobile_ceu_buffer *buf = to_ceu_vb(vb); |
cca0e549 | 432 | struct sh_mobile_ceu_dev *pcdev = ici->priv; |
cca0e549 | 433 | |
3dac322d | 434 | spin_lock_irq(&pcdev->lock); |
cca0e549 GL |
435 | |
436 | if (pcdev->active == vb) { | |
437 | /* disable capture (release DMA buffer), reset */ | |
438 | ceu_write(pcdev, CAPSR, 1 << 16); | |
439 | pcdev->active = NULL; | |
440 | } | |
441 | ||
cb74cf53 GL |
442 | /* |
443 | * Doesn't hurt also if the list is empty, but it hurts, if queuing the | |
444 | * buffer failed, and .buf_init() hasn't been called | |
445 | */ | |
446 | if (buf->queue.next) | |
447 | list_del_init(&buf->queue); | |
cca0e549 | 448 | |
b5518a41 GL |
449 | pcdev->buf_total -= PAGE_ALIGN(vb2_plane_size(vb, 0)); |
450 | dev_dbg(icd->parent, "%s() %zu bytes buffers\n", __func__, | |
451 | pcdev->buf_total); | |
452 | ||
3dac322d | 453 | spin_unlock_irq(&pcdev->lock); |
a616898d | 454 | } |
cca0e549 | 455 | |
a616898d GL |
456 | static int sh_mobile_ceu_videobuf_init(struct vb2_buffer *vb) |
457 | { | |
b5518a41 GL |
458 | struct soc_camera_device *icd = container_of(vb->vb2_queue, struct soc_camera_device, vb2_vidq); |
459 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); | |
460 | struct sh_mobile_ceu_dev *pcdev = ici->priv; | |
461 | ||
462 | pcdev->buf_total += PAGE_ALIGN(vb2_plane_size(vb, 0)); | |
463 | dev_dbg(icd->parent, "%s() %zu bytes buffers\n", __func__, | |
464 | pcdev->buf_total); | |
465 | ||
a616898d GL |
466 | /* This is for locking debugging only */ |
467 | INIT_LIST_HEAD(&to_ceu_vb(vb)->queue); | |
468 | return 0; | |
0d3244d6 MD |
469 | } |
470 | ||
066f7867 GL |
471 | static int sh_mobile_ceu_stop_streaming(struct vb2_queue *q) |
472 | { | |
473 | struct soc_camera_device *icd = container_of(q, struct soc_camera_device, vb2_vidq); | |
7dfff953 | 474 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
066f7867 GL |
475 | struct sh_mobile_ceu_dev *pcdev = ici->priv; |
476 | struct list_head *buf_head, *tmp; | |
066f7867 | 477 | |
3dac322d | 478 | spin_lock_irq(&pcdev->lock); |
066f7867 GL |
479 | |
480 | pcdev->active = NULL; | |
481 | ||
482 | list_for_each_safe(buf_head, tmp, &pcdev->capture) | |
483 | list_del_init(buf_head); | |
484 | ||
3dac322d | 485 | spin_unlock_irq(&pcdev->lock); |
066f7867 GL |
486 | |
487 | return sh_mobile_ceu_soft_reset(pcdev); | |
488 | } | |
489 | ||
a616898d GL |
490 | static struct vb2_ops sh_mobile_ceu_videobuf_ops = { |
491 | .queue_setup = sh_mobile_ceu_videobuf_setup, | |
492 | .buf_prepare = sh_mobile_ceu_videobuf_prepare, | |
493 | .buf_queue = sh_mobile_ceu_videobuf_queue, | |
494 | .buf_cleanup = sh_mobile_ceu_videobuf_release, | |
495 | .buf_init = sh_mobile_ceu_videobuf_init, | |
496 | .wait_prepare = soc_camera_unlock, | |
497 | .wait_finish = soc_camera_lock, | |
066f7867 | 498 | .stop_streaming = sh_mobile_ceu_stop_streaming, |
0d3244d6 MD |
499 | }; |
500 | ||
501 | static irqreturn_t sh_mobile_ceu_irq(int irq, void *data) | |
502 | { | |
503 | struct sh_mobile_ceu_dev *pcdev = data; | |
a616898d GL |
504 | struct vb2_buffer *vb; |
505 | int ret; | |
0d3244d6 | 506 | |
a616898d | 507 | spin_lock(&pcdev->lock); |
0d3244d6 MD |
508 | |
509 | vb = pcdev->active; | |
cca0e549 GL |
510 | if (!vb) |
511 | /* Stale interrupt from a released buffer */ | |
512 | goto out; | |
513 | ||
a616898d | 514 | list_del_init(&to_ceu_vb(vb)->queue); |
0d3244d6 MD |
515 | |
516 | if (!list_empty(&pcdev->capture)) | |
a616898d GL |
517 | pcdev->active = &list_entry(pcdev->capture.next, |
518 | struct sh_mobile_ceu_buffer, queue)->vb; | |
0d3244d6 MD |
519 | else |
520 | pcdev->active = NULL; | |
521 | ||
a616898d GL |
522 | ret = sh_mobile_ceu_capture(pcdev); |
523 | do_gettimeofday(&vb->v4l2_buf.timestamp); | |
524 | if (!ret) { | |
525 | vb->v4l2_buf.field = pcdev->field; | |
526 | vb->v4l2_buf.sequence = pcdev->sequence++; | |
527 | } | |
528 | vb2_buffer_done(vb, ret < 0 ? VB2_BUF_STATE_ERROR : VB2_BUF_STATE_DONE); | |
cca0e549 GL |
529 | |
530 | out: | |
a616898d | 531 | spin_unlock(&pcdev->lock); |
0d3244d6 MD |
532 | |
533 | return IRQ_HANDLED; | |
534 | } | |
535 | ||
6b526fed GL |
536 | static struct v4l2_subdev *find_csi2(struct sh_mobile_ceu_dev *pcdev) |
537 | { | |
538 | struct v4l2_subdev *sd; | |
539 | ||
540 | if (!pcdev->csi2_pdev) | |
541 | return NULL; | |
542 | ||
543 | v4l2_device_for_each_subdev(sd, &pcdev->ici.v4l2_dev) | |
544 | if (&pcdev->csi2_pdev->dev == v4l2_get_subdevdata(sd)) | |
545 | return sd; | |
546 | ||
547 | return NULL; | |
548 | } | |
549 | ||
1c3bb743 | 550 | /* Called with .video_lock held */ |
0d3244d6 MD |
551 | static int sh_mobile_ceu_add_device(struct soc_camera_device *icd) |
552 | { | |
7dfff953 | 553 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
0d3244d6 | 554 | struct sh_mobile_ceu_dev *pcdev = ici->priv; |
6b526fed | 555 | struct v4l2_subdev *csi2_sd; |
6ed7c038 | 556 | int ret; |
0d3244d6 | 557 | |
0d3244d6 | 558 | if (pcdev->icd) |
979ea1dd | 559 | return -EBUSY; |
0d3244d6 | 560 | |
7dfff953 | 561 | dev_info(icd->parent, |
0d3244d6 MD |
562 | "SuperH Mobile CEU driver attached to camera %d\n", |
563 | icd->devnum); | |
564 | ||
a79aebfc | 565 | pm_runtime_get_sync(ici->v4l2_dev.dev); |
40e2e092 | 566 | |
b5518a41 GL |
567 | pcdev->buf_total = 0; |
568 | ||
6ed7c038 | 569 | ret = sh_mobile_ceu_soft_reset(pcdev); |
6b526fed GL |
570 | |
571 | csi2_sd = find_csi2(pcdev); | |
4c0b036d GL |
572 | if (csi2_sd) { |
573 | csi2_sd->grp_id = soc_camera_grp_id(icd); | |
574 | v4l2_set_subdev_hostdata(csi2_sd, icd); | |
575 | } | |
6b526fed GL |
576 | |
577 | ret = v4l2_subdev_call(csi2_sd, core, s_power, 1); | |
489759c0 | 578 | if (ret < 0 && ret != -ENOIOCTLCMD && ret != -ENODEV) { |
6b526fed | 579 | pm_runtime_put_sync(ici->v4l2_dev.dev); |
489759c0 | 580 | return ret; |
6b526fed | 581 | } |
979ea1dd | 582 | |
489759c0 GL |
583 | /* |
584 | * -ENODEV is special: either csi2_sd == NULL or the CSI-2 driver | |
585 | * has not found this soc-camera device among its clients | |
586 | */ | |
587 | if (ret == -ENODEV && csi2_sd) | |
588 | csi2_sd->grp_id = 0; | |
589 | pcdev->icd = icd; | |
590 | ||
591 | return 0; | |
0d3244d6 MD |
592 | } |
593 | ||
1c3bb743 | 594 | /* Called with .video_lock held */ |
0d3244d6 MD |
595 | static void sh_mobile_ceu_remove_device(struct soc_camera_device *icd) |
596 | { | |
7dfff953 | 597 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
0d3244d6 | 598 | struct sh_mobile_ceu_dev *pcdev = ici->priv; |
6b526fed | 599 | struct v4l2_subdev *csi2_sd = find_csi2(pcdev); |
0d3244d6 MD |
600 | |
601 | BUG_ON(icd != pcdev->icd); | |
602 | ||
6b526fed | 603 | v4l2_subdev_call(csi2_sd, core, s_power, 0); |
489759c0 GL |
604 | if (csi2_sd) |
605 | csi2_sd->grp_id = 0; | |
0d3244d6 MD |
606 | /* disable capture, disable interrupts */ |
607 | ceu_write(pcdev, CEIER, 0); | |
b1de7aeb | 608 | sh_mobile_ceu_soft_reset(pcdev); |
51354cc3 MD |
609 | |
610 | /* make sure active buffer is canceled */ | |
3dac322d | 611 | spin_lock_irq(&pcdev->lock); |
51354cc3 | 612 | if (pcdev->active) { |
a616898d GL |
613 | list_del_init(&to_ceu_vb(pcdev->active)->queue); |
614 | vb2_buffer_done(pcdev->active, VB2_BUF_STATE_ERROR); | |
51354cc3 MD |
615 | pcdev->active = NULL; |
616 | } | |
3dac322d | 617 | spin_unlock_irq(&pcdev->lock); |
51354cc3 | 618 | |
a79aebfc | 619 | pm_runtime_put_sync(ici->v4l2_dev.dev); |
40e2e092 | 620 | |
7dfff953 | 621 | dev_info(icd->parent, |
0d3244d6 MD |
622 | "SuperH Mobile CEU driver detached from camera %d\n", |
623 | icd->devnum); | |
624 | ||
625 | pcdev->icd = NULL; | |
626 | } | |
627 | ||
961801bb GL |
628 | /* |
629 | * See chapter 29.4.12 "Capture Filter Control Register (CFLCR)" | |
630 | * in SH7722 Hardware Manual | |
631 | */ | |
632 | static unsigned int size_dst(unsigned int src, unsigned int scale) | |
633 | { | |
634 | unsigned int mant_pre = scale >> 12; | |
635 | if (!src || !scale) | |
636 | return src; | |
637 | return ((mant_pre + 2 * (src - 1)) / (2 * mant_pre) - 1) * | |
638 | mant_pre * 4096 / scale + 1; | |
639 | } | |
640 | ||
961801bb GL |
641 | static u16 calc_scale(unsigned int src, unsigned int *dst) |
642 | { | |
643 | u16 scale; | |
644 | ||
645 | if (src == *dst) | |
646 | return 0; | |
647 | ||
648 | scale = (src * 4096 / *dst) & ~7; | |
649 | ||
650 | while (scale > 4096 && size_dst(src, scale) < *dst) | |
651 | scale -= 8; | |
652 | ||
653 | *dst = size_dst(src, scale); | |
654 | ||
655 | return scale; | |
656 | } | |
657 | ||
658 | /* rect is guaranteed to not exceed the scaled camera rectangle */ | |
e622681d | 659 | static void sh_mobile_ceu_set_rect(struct soc_camera_device *icd) |
904078f1 | 660 | { |
7dfff953 | 661 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
904078f1 GL |
662 | struct sh_mobile_ceu_cam *cam = icd->host_priv; |
663 | struct sh_mobile_ceu_dev *pcdev = ici->priv; | |
6a6c8786 GL |
664 | unsigned int height, width, cdwdr_width, in_width, in_height; |
665 | unsigned int left_offset, top_offset; | |
904078f1 GL |
666 | u32 camor; |
667 | ||
7dfff953 | 668 | dev_geo(icd->parent, "Crop %ux%u@%u:%u\n", |
e622681d | 669 | icd->user_width, icd->user_height, cam->ceu_left, cam->ceu_top); |
904078f1 | 670 | |
e622681d GL |
671 | left_offset = cam->ceu_left; |
672 | top_offset = cam->ceu_top; | |
904078f1 | 673 | |
eec5ce01 GL |
674 | WARN_ON(icd->user_width & 3 || icd->user_height & 3); |
675 | ||
676 | width = icd->user_width; | |
677 | ||
904078f1 | 678 | if (pcdev->image_mode) { |
e622681d | 679 | in_width = cam->width; |
961801bb | 680 | if (!pcdev->is_16bit) { |
961801bb GL |
681 | in_width *= 2; |
682 | left_offset *= 2; | |
683 | } | |
eec5ce01 | 684 | cdwdr_width = width; |
904078f1 | 685 | } else { |
eec5ce01 | 686 | int bytes_per_line = soc_mbus_bytes_per_line(width, |
760697be GL |
687 | icd->current_fmt->host_fmt); |
688 | unsigned int w_factor; | |
6a6c8786 | 689 | |
760697be GL |
690 | switch (icd->current_fmt->host_fmt->packing) { |
691 | case SOC_MBUS_PACKING_2X8_PADHI: | |
692 | w_factor = 2; | |
693 | break; | |
694 | default: | |
695 | w_factor = 1; | |
696 | } | |
961801bb | 697 | |
e622681d | 698 | in_width = cam->width * w_factor; |
eec5ce01 | 699 | left_offset *= w_factor; |
961801bb | 700 | |
760697be | 701 | if (bytes_per_line < 0) |
eec5ce01 | 702 | cdwdr_width = width; |
760697be GL |
703 | else |
704 | cdwdr_width = bytes_per_line; | |
904078f1 GL |
705 | } |
706 | ||
e622681d GL |
707 | height = icd->user_height; |
708 | in_height = cam->height; | |
1edcc10d | 709 | if (V4L2_FIELD_NONE != pcdev->field) { |
eec5ce01 | 710 | height = (height / 2) & ~3; |
961801bb GL |
711 | in_height /= 2; |
712 | top_offset /= 2; | |
904078f1 GL |
713 | cdwdr_width *= 2; |
714 | } | |
715 | ||
b3b5020d | 716 | /* CSI2 special configuration */ |
6b526fed | 717 | if (pcdev->pdata->csi2) { |
b3b5020d GL |
718 | in_width = ((in_width - 2) * 2); |
719 | left_offset *= 2; | |
720 | } | |
721 | ||
6a6c8786 | 722 | /* Set CAMOR, CAPWR, CFSZR, take care of CDWDR */ |
904078f1 | 723 | camor = left_offset | (top_offset << 16); |
6a6c8786 | 724 | |
7dfff953 | 725 | dev_geo(icd->parent, |
6a6c8786 GL |
726 | "CAMOR 0x%x, CAPWR 0x%x, CFSZR 0x%x, CDWDR 0x%x\n", camor, |
727 | (in_height << 16) | in_width, (height << 16) | width, | |
728 | cdwdr_width); | |
729 | ||
904078f1 | 730 | ceu_write(pcdev, CAMOR, camor); |
961801bb | 731 | ceu_write(pcdev, CAPWR, (in_height << 16) | in_width); |
eec5ce01 | 732 | /* CFSZR clipping is applied _after_ the scaling filter (CFLCR) */ |
6a6c8786 | 733 | ceu_write(pcdev, CFSZR, (height << 16) | width); |
904078f1 GL |
734 | ceu_write(pcdev, CDWDR, cdwdr_width); |
735 | } | |
736 | ||
737 | static u32 capture_save_reset(struct sh_mobile_ceu_dev *pcdev) | |
738 | { | |
739 | u32 capsr = ceu_read(pcdev, CAPSR); | |
740 | ceu_write(pcdev, CAPSR, 1 << 16); /* reset, stop capture */ | |
741 | return capsr; | |
742 | } | |
743 | ||
744 | static void capture_restore(struct sh_mobile_ceu_dev *pcdev, u32 capsr) | |
745 | { | |
746 | unsigned long timeout = jiffies + 10 * HZ; | |
747 | ||
748 | /* | |
749 | * Wait until the end of the current frame. It can take a long time, | |
750 | * but if it has been aborted by a CAPSR reset, it shoule exit sooner. | |
751 | */ | |
752 | while ((ceu_read(pcdev, CSTSR) & 1) && time_before(jiffies, timeout)) | |
753 | msleep(1); | |
754 | ||
755 | if (time_after(jiffies, timeout)) { | |
756 | dev_err(pcdev->ici.v4l2_dev.dev, | |
757 | "Timeout waiting for frame end! Interface problem?\n"); | |
758 | return; | |
759 | } | |
760 | ||
761 | /* Wait until reset clears, this shall not hang... */ | |
762 | while (ceu_read(pcdev, CAPSR) & (1 << 16)) | |
763 | udelay(10); | |
764 | ||
765 | /* Anything to restore? */ | |
766 | if (capsr & ~(1 << 16)) | |
767 | ceu_write(pcdev, CAPSR, capsr); | |
768 | } | |
769 | ||
e1db7043 GL |
770 | /* Find the bus subdevice driver, e.g., CSI2 */ |
771 | static struct v4l2_subdev *find_bus_subdev(struct sh_mobile_ceu_dev *pcdev, | |
772 | struct soc_camera_device *icd) | |
773 | { | |
6ac939c0 GL |
774 | if (pcdev->csi2_pdev) { |
775 | struct v4l2_subdev *csi2_sd = find_csi2(pcdev); | |
4c0b036d | 776 | if (csi2_sd && csi2_sd->grp_id == soc_camera_grp_id(icd)) |
6ac939c0 GL |
777 | return csi2_sd; |
778 | } | |
e1db7043 | 779 | |
6ac939c0 | 780 | return soc_camera_to_subdev(icd); |
e1db7043 GL |
781 | } |
782 | ||
783 | #define CEU_BUS_FLAGS (V4L2_MBUS_MASTER | \ | |
784 | V4L2_MBUS_PCLK_SAMPLE_RISING | \ | |
785 | V4L2_MBUS_HSYNC_ACTIVE_HIGH | \ | |
786 | V4L2_MBUS_HSYNC_ACTIVE_LOW | \ | |
787 | V4L2_MBUS_VSYNC_ACTIVE_HIGH | \ | |
788 | V4L2_MBUS_VSYNC_ACTIVE_LOW | \ | |
789 | V4L2_MBUS_DATA_ACTIVE_HIGH) | |
790 | ||
a616898d | 791 | /* Capture is not running, no interrupts, no locking needed */ |
8843d119 | 792 | static int sh_mobile_ceu_set_bus_param(struct soc_camera_device *icd) |
0d3244d6 | 793 | { |
7dfff953 | 794 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
0d3244d6 | 795 | struct sh_mobile_ceu_dev *pcdev = ici->priv; |
e1db7043 | 796 | struct v4l2_subdev *sd = find_bus_subdev(pcdev, icd); |
904078f1 | 797 | struct sh_mobile_ceu_cam *cam = icd->host_priv; |
e1db7043 GL |
798 | struct v4l2_mbus_config cfg = {.type = V4L2_MBUS_PARALLEL,}; |
799 | unsigned long value, common_flags = CEU_BUS_FLAGS; | |
904078f1 | 800 | u32 capsr = capture_save_reset(pcdev); |
e1db7043 GL |
801 | unsigned int yuv_lineskip; |
802 | int ret; | |
0d3244d6 | 803 | |
e1db7043 GL |
804 | /* |
805 | * If the client doesn't implement g_mbus_config, we just use our | |
806 | * platform data | |
807 | */ | |
808 | ret = v4l2_subdev_call(sd, video, g_mbus_config, &cfg); | |
809 | if (!ret) { | |
810 | common_flags = soc_mbus_config_compatible(&cfg, | |
811 | common_flags); | |
812 | if (!common_flags) | |
813 | return -EINVAL; | |
814 | } else if (ret != -ENOIOCTLCMD) { | |
815 | return ret; | |
816 | } | |
0d3244d6 | 817 | |
85dc1cff | 818 | /* Make choises, based on platform preferences */ |
e1db7043 GL |
819 | if ((common_flags & V4L2_MBUS_HSYNC_ACTIVE_HIGH) && |
820 | (common_flags & V4L2_MBUS_HSYNC_ACTIVE_LOW)) { | |
85dc1cff | 821 | if (pcdev->pdata->flags & SH_CEU_FLAG_HSYNC_LOW) |
e1db7043 | 822 | common_flags &= ~V4L2_MBUS_HSYNC_ACTIVE_HIGH; |
85dc1cff | 823 | else |
e1db7043 | 824 | common_flags &= ~V4L2_MBUS_HSYNC_ACTIVE_LOW; |
85dc1cff KM |
825 | } |
826 | ||
e1db7043 GL |
827 | if ((common_flags & V4L2_MBUS_VSYNC_ACTIVE_HIGH) && |
828 | (common_flags & V4L2_MBUS_VSYNC_ACTIVE_LOW)) { | |
85dc1cff | 829 | if (pcdev->pdata->flags & SH_CEU_FLAG_VSYNC_LOW) |
e1db7043 | 830 | common_flags &= ~V4L2_MBUS_VSYNC_ACTIVE_HIGH; |
85dc1cff | 831 | else |
e1db7043 | 832 | common_flags &= ~V4L2_MBUS_VSYNC_ACTIVE_LOW; |
85dc1cff KM |
833 | } |
834 | ||
e1db7043 GL |
835 | cfg.flags = common_flags; |
836 | ret = v4l2_subdev_call(sd, video, s_mbus_config, &cfg); | |
837 | if (ret < 0 && ret != -ENOIOCTLCMD) | |
0d3244d6 MD |
838 | return ret; |
839 | ||
e1db7043 | 840 | if (icd->current_fmt->host_fmt->bits_per_sample > 8) |
904078f1 | 841 | pcdev->is_16bit = 1; |
e1db7043 GL |
842 | else |
843 | pcdev->is_16bit = 0; | |
0d3244d6 MD |
844 | |
845 | ceu_write(pcdev, CRCNTR, 0); | |
846 | ceu_write(pcdev, CRCMPR, 0); | |
847 | ||
8be65dc5 | 848 | value = 0x00000010; /* data fetch by default */ |
e1db7043 | 849 | yuv_lineskip = 0x10; |
8be65dc5 | 850 | |
760697be | 851 | switch (icd->current_fmt->host_fmt->fourcc) { |
8be65dc5 MD |
852 | case V4L2_PIX_FMT_NV12: |
853 | case V4L2_PIX_FMT_NV21: | |
e1db7043 GL |
854 | /* convert 4:2:2 -> 4:2:0 */ |
855 | yuv_lineskip = 0; /* skip for NV12/21, no skip for NV16/61 */ | |
9e4a56d2 MD |
856 | /* fall-through */ |
857 | case V4L2_PIX_FMT_NV16: | |
858 | case V4L2_PIX_FMT_NV61: | |
760697be | 859 | switch (cam->code) { |
ace6e979 | 860 | case V4L2_MBUS_FMT_UYVY8_2X8: |
8be65dc5 MD |
861 | value = 0x00000000; /* Cb0, Y0, Cr0, Y1 */ |
862 | break; | |
ace6e979 | 863 | case V4L2_MBUS_FMT_VYUY8_2X8: |
8be65dc5 MD |
864 | value = 0x00000100; /* Cr0, Y0, Cb0, Y1 */ |
865 | break; | |
ace6e979 | 866 | case V4L2_MBUS_FMT_YUYV8_2X8: |
8be65dc5 MD |
867 | value = 0x00000200; /* Y0, Cb0, Y1, Cr0 */ |
868 | break; | |
ace6e979 | 869 | case V4L2_MBUS_FMT_YVYU8_2X8: |
8be65dc5 MD |
870 | value = 0x00000300; /* Y0, Cr0, Y1, Cb0 */ |
871 | break; | |
872 | default: | |
873 | BUG(); | |
874 | } | |
875 | } | |
876 | ||
760697be GL |
877 | if (icd->current_fmt->host_fmt->fourcc == V4L2_PIX_FMT_NV21 || |
878 | icd->current_fmt->host_fmt->fourcc == V4L2_PIX_FMT_NV61) | |
9e4a56d2 | 879 | value ^= 0x00000100; /* swap U, V to change from NV1x->NVx1 */ |
8be65dc5 | 880 | |
e1db7043 GL |
881 | value |= common_flags & V4L2_MBUS_VSYNC_ACTIVE_LOW ? 1 << 1 : 0; |
882 | value |= common_flags & V4L2_MBUS_HSYNC_ACTIVE_LOW ? 1 << 0 : 0; | |
904078f1 | 883 | value |= pcdev->is_16bit ? 1 << 12 : 0; |
b3b5020d GL |
884 | |
885 | /* CSI2 mode */ | |
6b526fed | 886 | if (pcdev->pdata->csi2) |
b3b5020d GL |
887 | value |= 3 << 12; |
888 | ||
0d3244d6 MD |
889 | ceu_write(pcdev, CAMCR, value); |
890 | ||
891 | ceu_write(pcdev, CAPCR, 0x00300000); | |
1edcc10d KM |
892 | |
893 | switch (pcdev->field) { | |
894 | case V4L2_FIELD_INTERLACED_TB: | |
895 | value = 0x101; | |
896 | break; | |
897 | case V4L2_FIELD_INTERLACED_BT: | |
898 | value = 0x102; | |
899 | break; | |
900 | default: | |
901 | value = 0; | |
902 | break; | |
903 | } | |
904 | ceu_write(pcdev, CAIFR, value); | |
0d3244d6 | 905 | |
e622681d | 906 | sh_mobile_ceu_set_rect(icd); |
0d3244d6 MD |
907 | mdelay(1); |
908 | ||
7dfff953 | 909 | dev_geo(icd->parent, "CFLCR 0x%x\n", pcdev->cflcr); |
961801bb | 910 | ceu_write(pcdev, CFLCR, pcdev->cflcr); |
dd54203b | 911 | |
5d28d525 GL |
912 | /* |
913 | * A few words about byte order (observed in Big Endian mode) | |
dd54203b MD |
914 | * |
915 | * In data fetch mode bytes are received in chunks of 8 bytes. | |
916 | * D0, D1, D2, D3, D4, D5, D6, D7 (D0 received first) | |
917 | * | |
918 | * The data is however by default written to memory in reverse order: | |
919 | * D7, D6, D5, D4, D3, D2, D1, D0 (D7 written to lowest byte) | |
920 | * | |
921 | * The lowest three bits of CDOCR allows us to do swapping, | |
2c0a072e MD |
922 | * using 7 we swap the data bytes to match the incoming order: |
923 | * D0, D1, D2, D3, D4, D5, D6, D7 | |
dd54203b | 924 | */ |
e1db7043 | 925 | value = 0x00000007 | yuv_lineskip; |
8be65dc5 MD |
926 | |
927 | ceu_write(pcdev, CDOCR, value); | |
0d3244d6 MD |
928 | ceu_write(pcdev, CFWCR, 0); /* keep "datafetch firewall" disabled */ |
929 | ||
904078f1 GL |
930 | capture_restore(pcdev, capsr); |
931 | ||
0d3244d6 | 932 | /* not in bundle mode: skip CBDSR, CDAYR2, CDACR2, CDBYR2, CDBCR2 */ |
0d3244d6 MD |
933 | return 0; |
934 | } | |
935 | ||
760697be GL |
936 | static int sh_mobile_ceu_try_bus_param(struct soc_camera_device *icd, |
937 | unsigned char buswidth) | |
0d3244d6 | 938 | { |
7dfff953 | 939 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
0d3244d6 | 940 | struct sh_mobile_ceu_dev *pcdev = ici->priv; |
e1db7043 GL |
941 | struct v4l2_subdev *sd = find_bus_subdev(pcdev, icd); |
942 | unsigned long common_flags = CEU_BUS_FLAGS; | |
943 | struct v4l2_mbus_config cfg = {.type = V4L2_MBUS_PARALLEL,}; | |
944 | int ret; | |
0d3244d6 | 945 | |
e1db7043 GL |
946 | ret = v4l2_subdev_call(sd, video, g_mbus_config, &cfg); |
947 | if (!ret) | |
948 | common_flags = soc_mbus_config_compatible(&cfg, | |
949 | common_flags); | |
950 | else if (ret != -ENOIOCTLCMD) | |
951 | return ret; | |
952 | ||
953 | if (!common_flags || buswidth > 16) | |
0d3244d6 MD |
954 | return -EINVAL; |
955 | ||
956 | return 0; | |
957 | } | |
958 | ||
760697be | 959 | static const struct soc_mbus_pixelfmt sh_mobile_ceu_formats[] = { |
9e4a56d2 | 960 | { |
760697be GL |
961 | .fourcc = V4L2_PIX_FMT_NV12, |
962 | .name = "NV12", | |
e1db7043 GL |
963 | .bits_per_sample = 8, |
964 | .packing = SOC_MBUS_PACKING_1_5X8, | |
760697be | 965 | .order = SOC_MBUS_ORDER_LE, |
ad3b81fa | 966 | .layout = SOC_MBUS_LAYOUT_PLANAR_2Y_C, |
760697be GL |
967 | }, { |
968 | .fourcc = V4L2_PIX_FMT_NV21, | |
969 | .name = "NV21", | |
e1db7043 GL |
970 | .bits_per_sample = 8, |
971 | .packing = SOC_MBUS_PACKING_1_5X8, | |
760697be | 972 | .order = SOC_MBUS_ORDER_LE, |
ad3b81fa | 973 | .layout = SOC_MBUS_LAYOUT_PLANAR_2Y_C, |
760697be GL |
974 | }, { |
975 | .fourcc = V4L2_PIX_FMT_NV16, | |
976 | .name = "NV16", | |
e1db7043 GL |
977 | .bits_per_sample = 8, |
978 | .packing = SOC_MBUS_PACKING_2X8_PADHI, | |
760697be | 979 | .order = SOC_MBUS_ORDER_LE, |
ad3b81fa | 980 | .layout = SOC_MBUS_LAYOUT_PLANAR_Y_C, |
760697be GL |
981 | }, { |
982 | .fourcc = V4L2_PIX_FMT_NV61, | |
983 | .name = "NV61", | |
e1db7043 GL |
984 | .bits_per_sample = 8, |
985 | .packing = SOC_MBUS_PACKING_2X8_PADHI, | |
760697be | 986 | .order = SOC_MBUS_ORDER_LE, |
ad3b81fa | 987 | .layout = SOC_MBUS_LAYOUT_PLANAR_Y_C, |
9e4a56d2 | 988 | }, |
8be65dc5 MD |
989 | }; |
990 | ||
760697be GL |
991 | /* This will be corrected as we get more formats */ |
992 | static bool sh_mobile_ceu_packing_supported(const struct soc_mbus_pixelfmt *fmt) | |
993 | { | |
994 | return fmt->packing == SOC_MBUS_PACKING_NONE || | |
e1db7043 GL |
995 | (fmt->bits_per_sample == 8 && |
996 | fmt->packing == SOC_MBUS_PACKING_1_5X8) || | |
760697be GL |
997 | (fmt->bits_per_sample == 8 && |
998 | fmt->packing == SOC_MBUS_PACKING_2X8_PADHI) || | |
999 | (fmt->bits_per_sample > 8 && | |
1000 | fmt->packing == SOC_MBUS_PACKING_EXTEND16); | |
1001 | } | |
1002 | ||
e622681d GL |
1003 | static int client_g_rect(struct v4l2_subdev *sd, struct v4l2_rect *rect); |
1004 | ||
d34bfcd2 HV |
1005 | static struct soc_camera_device *ctrl_to_icd(struct v4l2_ctrl *ctrl) |
1006 | { | |
1007 | return container_of(ctrl->handler, struct soc_camera_device, | |
1008 | ctrl_handler); | |
1009 | } | |
1010 | ||
1011 | static int sh_mobile_ceu_s_ctrl(struct v4l2_ctrl *ctrl) | |
1012 | { | |
1013 | struct soc_camera_device *icd = ctrl_to_icd(ctrl); | |
1014 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); | |
1015 | struct sh_mobile_ceu_dev *pcdev = ici->priv; | |
1016 | ||
1017 | switch (ctrl->id) { | |
1018 | case V4L2_CID_SHARPNESS: | |
1019 | switch (icd->current_fmt->host_fmt->fourcc) { | |
1020 | case V4L2_PIX_FMT_NV12: | |
1021 | case V4L2_PIX_FMT_NV21: | |
1022 | case V4L2_PIX_FMT_NV16: | |
1023 | case V4L2_PIX_FMT_NV61: | |
1024 | ceu_write(pcdev, CLFCR, !ctrl->val); | |
1025 | return 0; | |
1026 | } | |
1027 | break; | |
1028 | } | |
1029 | ||
1030 | return -EINVAL; | |
1031 | } | |
1032 | ||
1033 | static const struct v4l2_ctrl_ops sh_mobile_ceu_ctrl_ops = { | |
1034 | .s_ctrl = sh_mobile_ceu_s_ctrl, | |
1035 | }; | |
1036 | ||
3805f201 | 1037 | static int sh_mobile_ceu_get_formats(struct soc_camera_device *icd, unsigned int idx, |
9414de39 MD |
1038 | struct soc_camera_format_xlate *xlate) |
1039 | { | |
760697be | 1040 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
7dfff953 | 1041 | struct device *dev = icd->parent; |
b3b5020d GL |
1042 | struct soc_camera_host *ici = to_soc_camera_host(dev); |
1043 | struct sh_mobile_ceu_dev *pcdev = ici->priv; | |
8be65dc5 | 1044 | int ret, k, n; |
9414de39 | 1045 | int formats = 0; |
904078f1 | 1046 | struct sh_mobile_ceu_cam *cam; |
760697be GL |
1047 | enum v4l2_mbus_pixelcode code; |
1048 | const struct soc_mbus_pixelfmt *fmt; | |
9414de39 | 1049 | |
760697be GL |
1050 | ret = v4l2_subdev_call(sd, video, enum_mbus_fmt, idx, &code); |
1051 | if (ret < 0) | |
1052 | /* No more formats */ | |
1053 | return 0; | |
1054 | ||
1055 | fmt = soc_mbus_get_fmtdesc(code); | |
1056 | if (!fmt) { | |
d2dcad49 GL |
1057 | dev_warn(dev, "unsupported format code #%u: %d\n", idx, code); |
1058 | return 0; | |
760697be GL |
1059 | } |
1060 | ||
6b526fed | 1061 | if (!pcdev->pdata->csi2) { |
e1db7043 | 1062 | /* Are there any restrictions in the CSI-2 case? */ |
b3b5020d GL |
1063 | ret = sh_mobile_ceu_try_bus_param(icd, fmt->bits_per_sample); |
1064 | if (ret < 0) | |
1065 | return 0; | |
1066 | } | |
9414de39 | 1067 | |
904078f1 | 1068 | if (!icd->host_priv) { |
e622681d GL |
1069 | struct v4l2_mbus_framefmt mf; |
1070 | struct v4l2_rect rect; | |
e622681d GL |
1071 | int shift = 0; |
1072 | ||
d34bfcd2 HV |
1073 | /* Add our control */ |
1074 | v4l2_ctrl_new_std(&icd->ctrl_handler, &sh_mobile_ceu_ctrl_ops, | |
1075 | V4L2_CID_SHARPNESS, 0, 1, 1, 0); | |
1076 | if (icd->ctrl_handler.error) | |
1077 | return icd->ctrl_handler.error; | |
1078 | ||
e622681d GL |
1079 | /* FIXME: subwindow is lost between close / open */ |
1080 | ||
1081 | /* Cache current client geometry */ | |
1082 | ret = client_g_rect(sd, &rect); | |
1083 | if (ret < 0) | |
1084 | return ret; | |
1085 | ||
1086 | /* First time */ | |
1087 | ret = v4l2_subdev_call(sd, video, g_mbus_fmt, &mf); | |
1088 | if (ret < 0) | |
1089 | return ret; | |
1090 | ||
48e971cd GL |
1091 | /* |
1092 | * All currently existing CEU implementations support 2560x1920 | |
1093 | * or larger frames. If the sensor is proposing too big a frame, | |
1094 | * don't bother with possibly supportred by the CEU larger | |
1095 | * sizes, just try VGA multiples. If needed, this can be | |
1096 | * adjusted in the future. | |
1097 | */ | |
1098 | while ((mf.width > pcdev->max_width || | |
1099 | mf.height > pcdev->max_height) && shift < 4) { | |
e622681d GL |
1100 | /* Try 2560x1920, 1280x960, 640x480, 320x240 */ |
1101 | mf.width = 2560 >> shift; | |
1102 | mf.height = 1920 >> shift; | |
4c0b036d GL |
1103 | ret = v4l2_device_call_until_err(sd->v4l2_dev, |
1104 | soc_camera_grp_id(icd), video, | |
1105 | s_mbus_fmt, &mf); | |
e622681d GL |
1106 | if (ret < 0) |
1107 | return ret; | |
1108 | shift++; | |
1109 | } | |
1110 | ||
1111 | if (shift == 4) { | |
1112 | dev_err(dev, "Failed to configure the client below %ux%x\n", | |
1113 | mf.width, mf.height); | |
1114 | return -EIO; | |
1115 | } | |
1116 | ||
1117 | dev_geo(dev, "camera fmt %ux%u\n", mf.width, mf.height); | |
1118 | ||
904078f1 GL |
1119 | cam = kzalloc(sizeof(*cam), GFP_KERNEL); |
1120 | if (!cam) | |
1121 | return -ENOMEM; | |
1122 | ||
e622681d GL |
1123 | /* We are called with current camera crop, initialise subrect with it */ |
1124 | cam->rect = rect; | |
1125 | cam->subrect = rect; | |
1126 | ||
1127 | cam->width = mf.width; | |
1128 | cam->height = mf.height; | |
1129 | ||
904078f1 GL |
1130 | icd->host_priv = cam; |
1131 | } else { | |
1132 | cam = icd->host_priv; | |
1133 | } | |
1134 | ||
c8329acc GL |
1135 | /* Beginning of a pass */ |
1136 | if (!idx) | |
904078f1 | 1137 | cam->extra_fmt = NULL; |
c8329acc | 1138 | |
760697be | 1139 | switch (code) { |
ace6e979 GL |
1140 | case V4L2_MBUS_FMT_UYVY8_2X8: |
1141 | case V4L2_MBUS_FMT_VYUY8_2X8: | |
1142 | case V4L2_MBUS_FMT_YUYV8_2X8: | |
1143 | case V4L2_MBUS_FMT_YVYU8_2X8: | |
904078f1 | 1144 | if (cam->extra_fmt) |
760697be | 1145 | break; |
c8329acc GL |
1146 | |
1147 | /* | |
1148 | * Our case is simple so far: for any of the above four camera | |
1149 | * formats we add all our four synthesized NV* formats, so, | |
1150 | * just marking the device with a single flag suffices. If | |
1151 | * the format generation rules are more complex, you would have | |
1152 | * to actually hang your already added / counted formats onto | |
1153 | * the host_priv pointer and check whether the format you're | |
1154 | * going to add now is already there. | |
1155 | */ | |
760697be | 1156 | cam->extra_fmt = sh_mobile_ceu_formats; |
c8329acc | 1157 | |
8be65dc5 MD |
1158 | n = ARRAY_SIZE(sh_mobile_ceu_formats); |
1159 | formats += n; | |
1160 | for (k = 0; xlate && k < n; k++) { | |
760697be GL |
1161 | xlate->host_fmt = &sh_mobile_ceu_formats[k]; |
1162 | xlate->code = code; | |
8be65dc5 | 1163 | xlate++; |
760697be GL |
1164 | dev_dbg(dev, "Providing format %s using code %d\n", |
1165 | sh_mobile_ceu_formats[k].name, code); | |
8be65dc5 | 1166 | } |
760697be | 1167 | break; |
9414de39 | 1168 | default: |
760697be GL |
1169 | if (!sh_mobile_ceu_packing_supported(fmt)) |
1170 | return 0; | |
1171 | } | |
1172 | ||
1173 | /* Generic pass-through */ | |
1174 | formats++; | |
1175 | if (xlate) { | |
1176 | xlate->host_fmt = fmt; | |
1177 | xlate->code = code; | |
1178 | xlate++; | |
1179 | dev_dbg(dev, "Providing format %s in pass-through mode\n", | |
e53a4805 | 1180 | fmt->name); |
9414de39 MD |
1181 | } |
1182 | ||
1183 | return formats; | |
1184 | } | |
1185 | ||
904078f1 GL |
1186 | static void sh_mobile_ceu_put_formats(struct soc_camera_device *icd) |
1187 | { | |
1188 | kfree(icd->host_priv); | |
1189 | icd->host_priv = NULL; | |
1190 | } | |
1191 | ||
961801bb | 1192 | /* Check if any dimension of r1 is smaller than respective one of r2 */ |
904078f1 GL |
1193 | static bool is_smaller(struct v4l2_rect *r1, struct v4l2_rect *r2) |
1194 | { | |
1195 | return r1->width < r2->width || r1->height < r2->height; | |
1196 | } | |
1197 | ||
961801bb GL |
1198 | /* Check if r1 fails to cover r2 */ |
1199 | static bool is_inside(struct v4l2_rect *r1, struct v4l2_rect *r2) | |
1200 | { | |
1201 | return r1->left > r2->left || r1->top > r2->top || | |
1202 | r1->left + r1->width < r2->left + r2->width || | |
1203 | r1->top + r1->height < r2->top + r2->height; | |
1204 | } | |
1205 | ||
6a6c8786 GL |
1206 | static unsigned int scale_down(unsigned int size, unsigned int scale) |
1207 | { | |
1208 | return (size * 4096 + scale / 2) / scale; | |
1209 | } | |
1210 | ||
6a6c8786 GL |
1211 | static unsigned int calc_generic_scale(unsigned int input, unsigned int output) |
1212 | { | |
1213 | return (input * 4096 + output / 2) / output; | |
1214 | } | |
1215 | ||
e622681d | 1216 | /* Get and store current client crop */ |
6a6c8786 GL |
1217 | static int client_g_rect(struct v4l2_subdev *sd, struct v4l2_rect *rect) |
1218 | { | |
1219 | struct v4l2_crop crop; | |
1220 | struct v4l2_cropcap cap; | |
1221 | int ret; | |
1222 | ||
1223 | crop.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; | |
1224 | ||
1225 | ret = v4l2_subdev_call(sd, video, g_crop, &crop); | |
1226 | if (!ret) { | |
1227 | *rect = crop.c; | |
1228 | return ret; | |
1229 | } | |
1230 | ||
1231 | /* Camera driver doesn't support .g_crop(), assume default rectangle */ | |
1232 | cap.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; | |
1233 | ||
1234 | ret = v4l2_subdev_call(sd, video, cropcap, &cap); | |
e622681d GL |
1235 | if (!ret) |
1236 | *rect = cap.defrect; | |
6a6c8786 GL |
1237 | |
1238 | return ret; | |
1239 | } | |
1240 | ||
e622681d GL |
1241 | /* Client crop has changed, update our sub-rectangle to remain within the area */ |
1242 | static void update_subrect(struct sh_mobile_ceu_cam *cam) | |
1243 | { | |
1244 | struct v4l2_rect *rect = &cam->rect, *subrect = &cam->subrect; | |
1245 | ||
1246 | if (rect->width < subrect->width) | |
1247 | subrect->width = rect->width; | |
1248 | ||
1249 | if (rect->height < subrect->height) | |
1250 | subrect->height = rect->height; | |
1251 | ||
1252 | if (rect->left > subrect->left) | |
1253 | subrect->left = rect->left; | |
1254 | else if (rect->left + rect->width > | |
1255 | subrect->left + subrect->width) | |
1256 | subrect->left = rect->left + rect->width - | |
1257 | subrect->width; | |
1258 | ||
1259 | if (rect->top > subrect->top) | |
1260 | subrect->top = rect->top; | |
1261 | else if (rect->top + rect->height > | |
1262 | subrect->top + subrect->height) | |
1263 | subrect->top = rect->top + rect->height - | |
1264 | subrect->height; | |
1265 | } | |
1266 | ||
961801bb | 1267 | /* |
6a6c8786 | 1268 | * The common for both scaling and cropping iterative approach is: |
961801bb GL |
1269 | * 1. try if the client can produce exactly what requested by the user |
1270 | * 2. if (1) failed, try to double the client image until we get one big enough | |
1271 | * 3. if (2) failed, try to request the maximum image | |
1272 | */ | |
e622681d | 1273 | static int client_s_crop(struct soc_camera_device *icd, struct v4l2_crop *crop, |
6a6c8786 | 1274 | struct v4l2_crop *cam_crop) |
09e231b3 | 1275 | { |
e622681d | 1276 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
6a6c8786 GL |
1277 | struct v4l2_rect *rect = &crop->c, *cam_rect = &cam_crop->c; |
1278 | struct device *dev = sd->v4l2_dev->dev; | |
e622681d | 1279 | struct sh_mobile_ceu_cam *cam = icd->host_priv; |
6a6c8786 | 1280 | struct v4l2_cropcap cap; |
904078f1 | 1281 | int ret; |
6a6c8786 | 1282 | unsigned int width, height; |
904078f1 | 1283 | |
6a6c8786 GL |
1284 | v4l2_subdev_call(sd, video, s_crop, crop); |
1285 | ret = client_g_rect(sd, cam_rect); | |
1286 | if (ret < 0) | |
1287 | return ret; | |
961801bb | 1288 | |
6a6c8786 GL |
1289 | /* |
1290 | * Now cam_crop contains the current camera input rectangle, and it must | |
1291 | * be within camera cropcap bounds | |
1292 | */ | |
1293 | if (!memcmp(rect, cam_rect, sizeof(*rect))) { | |
1294 | /* Even if camera S_CROP failed, but camera rectangle matches */ | |
e26b3144 | 1295 | dev_dbg(dev, "Camera S_CROP successful for %dx%d@%d:%d\n", |
6a6c8786 | 1296 | rect->width, rect->height, rect->left, rect->top); |
e622681d | 1297 | cam->rect = *cam_rect; |
6a6c8786 | 1298 | return 0; |
904078f1 GL |
1299 | } |
1300 | ||
6a6c8786 | 1301 | /* Try to fix cropping, that camera hasn't managed to set */ |
e26b3144 | 1302 | dev_geo(dev, "Fix camera S_CROP for %dx%d@%d:%d to %dx%d@%d:%d\n", |
6a6c8786 | 1303 | cam_rect->width, cam_rect->height, |
08590b96 | 1304 | cam_rect->left, cam_rect->top, |
6a6c8786 GL |
1305 | rect->width, rect->height, rect->left, rect->top); |
1306 | ||
1307 | /* We need sensor maximum rectangle */ | |
1308 | ret = v4l2_subdev_call(sd, video, cropcap, &cap); | |
1309 | if (ret < 0) | |
1310 | return ret; | |
1311 | ||
e622681d | 1312 | /* Put user requested rectangle within sensor bounds */ |
6a6c8786 GL |
1313 | soc_camera_limit_side(&rect->left, &rect->width, cap.bounds.left, 2, |
1314 | cap.bounds.width); | |
1315 | soc_camera_limit_side(&rect->top, &rect->height, cap.bounds.top, 4, | |
1316 | cap.bounds.height); | |
904078f1 GL |
1317 | |
1318 | /* | |
1319 | * Popular special case - some cameras can only handle fixed sizes like | |
1320 | * QVGA, VGA,... Take care to avoid infinite loop. | |
1321 | */ | |
6a6c8786 GL |
1322 | width = max(cam_rect->width, 2); |
1323 | height = max(cam_rect->height, 2); | |
1324 | ||
e622681d GL |
1325 | /* |
1326 | * Loop as long as sensor is not covering the requested rectangle and | |
1327 | * is still within its bounds | |
1328 | */ | |
6a6c8786 GL |
1329 | while (!ret && (is_smaller(cam_rect, rect) || |
1330 | is_inside(cam_rect, rect)) && | |
1331 | (cap.bounds.width > width || cap.bounds.height > height)) { | |
961801bb GL |
1332 | |
1333 | width *= 2; | |
1334 | height *= 2; | |
6a6c8786 | 1335 | |
08590b96 GL |
1336 | cam_rect->width = width; |
1337 | cam_rect->height = height; | |
904078f1 | 1338 | |
6a6c8786 GL |
1339 | /* |
1340 | * We do not know what capabilities the camera has to set up | |
1341 | * left and top borders. We could try to be smarter in iterating | |
1342 | * them, e.g., if camera current left is to the right of the | |
1343 | * target left, set it to the middle point between the current | |
1344 | * left and minimum left. But that would add too much | |
1345 | * complexity: we would have to iterate each border separately. | |
e622681d | 1346 | * Instead we just drop to the left and top bounds. |
6a6c8786 GL |
1347 | */ |
1348 | if (cam_rect->left > rect->left) | |
1349 | cam_rect->left = cap.bounds.left; | |
961801bb | 1350 | |
6a6c8786 GL |
1351 | if (cam_rect->left + cam_rect->width < rect->left + rect->width) |
1352 | cam_rect->width = rect->left + rect->width - | |
08590b96 | 1353 | cam_rect->left; |
961801bb | 1354 | |
6a6c8786 GL |
1355 | if (cam_rect->top > rect->top) |
1356 | cam_rect->top = cap.bounds.top; | |
961801bb | 1357 | |
6a6c8786 GL |
1358 | if (cam_rect->top + cam_rect->height < rect->top + rect->height) |
1359 | cam_rect->height = rect->top + rect->height - | |
08590b96 | 1360 | cam_rect->top; |
961801bb | 1361 | |
6a6c8786 GL |
1362 | v4l2_subdev_call(sd, video, s_crop, cam_crop); |
1363 | ret = client_g_rect(sd, cam_rect); | |
e26b3144 | 1364 | dev_geo(dev, "Camera S_CROP %d for %dx%d@%d:%d\n", ret, |
6a6c8786 | 1365 | cam_rect->width, cam_rect->height, |
08590b96 | 1366 | cam_rect->left, cam_rect->top); |
904078f1 GL |
1367 | } |
1368 | ||
6a6c8786 GL |
1369 | /* S_CROP must not modify the rectangle */ |
1370 | if (is_smaller(cam_rect, rect) || is_inside(cam_rect, rect)) { | |
904078f1 GL |
1371 | /* |
1372 | * The camera failed to configure a suitable cropping, | |
1373 | * we cannot use the current rectangle, set to max | |
1374 | */ | |
6a6c8786 GL |
1375 | *cam_rect = cap.bounds; |
1376 | v4l2_subdev_call(sd, video, s_crop, cam_crop); | |
1377 | ret = client_g_rect(sd, cam_rect); | |
e26b3144 | 1378 | dev_geo(dev, "Camera S_CROP %d for max %dx%d@%d:%d\n", ret, |
6a6c8786 | 1379 | cam_rect->width, cam_rect->height, |
08590b96 | 1380 | cam_rect->left, cam_rect->top); |
904078f1 GL |
1381 | } |
1382 | ||
e622681d GL |
1383 | if (!ret) { |
1384 | cam->rect = *cam_rect; | |
1385 | update_subrect(cam); | |
6a6c8786 GL |
1386 | } |
1387 | ||
e622681d | 1388 | return ret; |
6a6c8786 GL |
1389 | } |
1390 | ||
e622681d | 1391 | /* Iterative s_mbus_fmt, also updates cached client crop on success */ |
760697be GL |
1392 | static int client_s_fmt(struct soc_camera_device *icd, |
1393 | struct v4l2_mbus_framefmt *mf, bool ceu_can_scale) | |
6a6c8786 | 1394 | { |
48e971cd GL |
1395 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
1396 | struct sh_mobile_ceu_dev *pcdev = ici->priv; | |
e622681d | 1397 | struct sh_mobile_ceu_cam *cam = icd->host_priv; |
6a6c8786 | 1398 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
7dfff953 | 1399 | struct device *dev = icd->parent; |
760697be | 1400 | unsigned int width = mf->width, height = mf->height, tmp_w, tmp_h; |
6a6c8786 GL |
1401 | unsigned int max_width, max_height; |
1402 | struct v4l2_cropcap cap; | |
36988741 | 1403 | bool ceu_1to1; |
6a6c8786 GL |
1404 | int ret; |
1405 | ||
4c0b036d GL |
1406 | ret = v4l2_device_call_until_err(sd->v4l2_dev, |
1407 | soc_camera_grp_id(icd), video, | |
b3b5020d | 1408 | s_mbus_fmt, mf); |
e622681d GL |
1409 | if (ret < 0) |
1410 | return ret; | |
1411 | ||
1412 | dev_geo(dev, "camera scaled to %ux%u\n", mf->width, mf->height); | |
1413 | ||
36988741 GL |
1414 | if (width == mf->width && height == mf->height) { |
1415 | /* Perfect! The client has done it all. */ | |
1416 | ceu_1to1 = true; | |
1417 | goto update_cache; | |
1418 | } | |
1419 | ||
1420 | ceu_1to1 = false; | |
1421 | if (!ceu_can_scale) | |
e622681d GL |
1422 | goto update_cache; |
1423 | ||
6a6c8786 GL |
1424 | cap.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; |
1425 | ||
1426 | ret = v4l2_subdev_call(sd, video, cropcap, &cap); | |
1427 | if (ret < 0) | |
1428 | return ret; | |
1429 | ||
48e971cd GL |
1430 | max_width = min(cap.bounds.width, pcdev->max_width); |
1431 | max_height = min(cap.bounds.height, pcdev->max_height); | |
6a6c8786 | 1432 | |
6a6c8786 | 1433 | /* Camera set a format, but geometry is not precise, try to improve */ |
760697be GL |
1434 | tmp_w = mf->width; |
1435 | tmp_h = mf->height; | |
6a6c8786 GL |
1436 | |
1437 | /* width <= max_width && height <= max_height - guaranteed by try_fmt */ | |
1438 | while ((width > tmp_w || height > tmp_h) && | |
1439 | tmp_w < max_width && tmp_h < max_height) { | |
1440 | tmp_w = min(2 * tmp_w, max_width); | |
1441 | tmp_h = min(2 * tmp_h, max_height); | |
760697be GL |
1442 | mf->width = tmp_w; |
1443 | mf->height = tmp_h; | |
4c0b036d GL |
1444 | ret = v4l2_device_call_until_err(sd->v4l2_dev, |
1445 | soc_camera_grp_id(icd), video, | |
1446 | s_mbus_fmt, mf); | |
6a6c8786 | 1447 | dev_geo(dev, "Camera scaled to %ux%u\n", |
760697be | 1448 | mf->width, mf->height); |
6a6c8786 GL |
1449 | if (ret < 0) { |
1450 | /* This shouldn't happen */ | |
1451 | dev_err(dev, "Client failed to set format: %d\n", ret); | |
1452 | return ret; | |
1453 | } | |
1454 | } | |
1455 | ||
e622681d GL |
1456 | update_cache: |
1457 | /* Update cache */ | |
1458 | ret = client_g_rect(sd, &cam->rect); | |
1459 | if (ret < 0) | |
1460 | return ret; | |
1461 | ||
36988741 GL |
1462 | if (ceu_1to1) |
1463 | cam->subrect = cam->rect; | |
1464 | else | |
1465 | update_subrect(cam); | |
e622681d | 1466 | |
6a6c8786 GL |
1467 | return 0; |
1468 | } | |
1469 | ||
1470 | /** | |
e622681d GL |
1471 | * @width - on output: user width, mapped back to input |
1472 | * @height - on output: user height, mapped back to input | |
1473 | * @mf - in- / output camera output window | |
6a6c8786 | 1474 | */ |
e622681d GL |
1475 | static int client_scale(struct soc_camera_device *icd, |
1476 | struct v4l2_mbus_framefmt *mf, | |
1477 | unsigned int *width, unsigned int *height, | |
1478 | bool ceu_can_scale) | |
6a6c8786 | 1479 | { |
6a6c8786 | 1480 | struct sh_mobile_ceu_cam *cam = icd->host_priv; |
7dfff953 | 1481 | struct device *dev = icd->parent; |
760697be | 1482 | struct v4l2_mbus_framefmt mf_tmp = *mf; |
6a6c8786 GL |
1483 | unsigned int scale_h, scale_v; |
1484 | int ret; | |
1485 | ||
e622681d GL |
1486 | /* |
1487 | * 5. Apply iterative camera S_FMT for camera user window (also updates | |
1488 | * client crop cache and the imaginary sub-rectangle). | |
1489 | */ | |
760697be | 1490 | ret = client_s_fmt(icd, &mf_tmp, ceu_can_scale); |
6a6c8786 GL |
1491 | if (ret < 0) |
1492 | return ret; | |
1493 | ||
1494 | dev_geo(dev, "5: camera scaled to %ux%u\n", | |
760697be | 1495 | mf_tmp.width, mf_tmp.height); |
6a6c8786 GL |
1496 | |
1497 | /* 6. Retrieve camera output window (g_fmt) */ | |
1498 | ||
760697be | 1499 | /* unneeded - it is already in "mf_tmp" */ |
6a6c8786 | 1500 | |
e622681d GL |
1501 | /* 7. Calculate new client scales. */ |
1502 | scale_h = calc_generic_scale(cam->rect.width, mf_tmp.width); | |
1503 | scale_v = calc_generic_scale(cam->rect.height, mf_tmp.height); | |
6a6c8786 | 1504 | |
760697be GL |
1505 | mf->width = mf_tmp.width; |
1506 | mf->height = mf_tmp.height; | |
1507 | mf->colorspace = mf_tmp.colorspace; | |
904078f1 GL |
1508 | |
1509 | /* | |
6a6c8786 | 1510 | * 8. Calculate new CEU crop - apply camera scales to previously |
e622681d | 1511 | * updated "effective" crop. |
904078f1 | 1512 | */ |
e622681d GL |
1513 | *width = scale_down(cam->subrect.width, scale_h); |
1514 | *height = scale_down(cam->subrect.height, scale_v); | |
6a6c8786 | 1515 | |
e622681d | 1516 | dev_geo(dev, "8: new client sub-window %ux%u\n", *width, *height); |
6a6c8786 GL |
1517 | |
1518 | return 0; | |
1519 | } | |
1520 | ||
1521 | /* | |
1522 | * CEU can scale and crop, but we don't want to waste bandwidth and kill the | |
1523 | * framerate by always requesting the maximum image from the client. See | |
3dac322d | 1524 | * Documentation/video4linux/sh_mobile_ceu_camera.txt for a description of |
6a6c8786 GL |
1525 | * scaling and cropping algorithms and for the meaning of referenced here steps. |
1526 | */ | |
1527 | static int sh_mobile_ceu_set_crop(struct soc_camera_device *icd, | |
1528 | struct v4l2_crop *a) | |
1529 | { | |
1530 | struct v4l2_rect *rect = &a->c; | |
7dfff953 GL |
1531 | struct device *dev = icd->parent; |
1532 | struct soc_camera_host *ici = to_soc_camera_host(dev); | |
6a6c8786 GL |
1533 | struct sh_mobile_ceu_dev *pcdev = ici->priv; |
1534 | struct v4l2_crop cam_crop; | |
1535 | struct sh_mobile_ceu_cam *cam = icd->host_priv; | |
e622681d | 1536 | struct v4l2_rect *cam_rect = &cam_crop.c; |
6a6c8786 | 1537 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
760697be | 1538 | struct v4l2_mbus_framefmt mf; |
e622681d | 1539 | unsigned int scale_cam_h, scale_cam_v, scale_ceu_h, scale_ceu_v, |
787d0f9d | 1540 | out_width, out_height; |
e622681d | 1541 | int interm_width, interm_height; |
6a6c8786 GL |
1542 | u32 capsr, cflcr; |
1543 | int ret; | |
1544 | ||
e622681d GL |
1545 | dev_geo(dev, "S_CROP(%ux%u@%u:%u)\n", rect->width, rect->height, |
1546 | rect->left, rect->top); | |
6a6c8786 | 1547 | |
e622681d GL |
1548 | /* During camera cropping its output window can change too, stop CEU */ |
1549 | capsr = capture_save_reset(pcdev); | |
1550 | dev_dbg(dev, "CAPSR 0x%x, CFLCR 0x%x\n", capsr, pcdev->cflcr); | |
6a6c8786 | 1551 | |
eec5ce01 GL |
1552 | /* |
1553 | * 1. - 2. Apply iterative camera S_CROP for new input window, read back | |
1554 | * actual camera rectangle. | |
1555 | */ | |
e622681d | 1556 | ret = client_s_crop(icd, a, &cam_crop); |
6a6c8786 GL |
1557 | if (ret < 0) |
1558 | return ret; | |
1559 | ||
e622681d | 1560 | dev_geo(dev, "1-2: camera cropped to %ux%u@%u:%u\n", |
6a6c8786 GL |
1561 | cam_rect->width, cam_rect->height, |
1562 | cam_rect->left, cam_rect->top); | |
1563 | ||
1564 | /* On success cam_crop contains current camera crop */ | |
1565 | ||
e622681d GL |
1566 | /* 3. Retrieve camera output window */ |
1567 | ret = v4l2_subdev_call(sd, video, g_mbus_fmt, &mf); | |
1568 | if (ret < 0) | |
1569 | return ret; | |
6a6c8786 | 1570 | |
48e971cd | 1571 | if (mf.width > pcdev->max_width || mf.height > pcdev->max_height) |
e622681d | 1572 | return -EINVAL; |
6a6c8786 | 1573 | |
e622681d GL |
1574 | /* 4. Calculate camera scales */ |
1575 | scale_cam_h = calc_generic_scale(cam_rect->width, mf.width); | |
1576 | scale_cam_v = calc_generic_scale(cam_rect->height, mf.height); | |
6a6c8786 | 1577 | |
e622681d GL |
1578 | /* Calculate intermediate window */ |
1579 | interm_width = scale_down(rect->width, scale_cam_h); | |
1580 | interm_height = scale_down(rect->height, scale_cam_v); | |
6a6c8786 | 1581 | |
3dac322d GL |
1582 | if (interm_width < icd->user_width) { |
1583 | u32 new_scale_h; | |
1584 | ||
1585 | new_scale_h = calc_generic_scale(rect->width, icd->user_width); | |
1586 | ||
1587 | mf.width = scale_down(cam_rect->width, new_scale_h); | |
1588 | } | |
1589 | ||
1590 | if (interm_height < icd->user_height) { | |
1591 | u32 new_scale_v; | |
1592 | ||
1593 | new_scale_v = calc_generic_scale(rect->height, icd->user_height); | |
1594 | ||
1595 | mf.height = scale_down(cam_rect->height, new_scale_v); | |
1596 | } | |
1597 | ||
1598 | if (interm_width < icd->user_width || interm_height < icd->user_height) { | |
4c0b036d GL |
1599 | ret = v4l2_device_call_until_err(sd->v4l2_dev, |
1600 | soc_camera_grp_id(icd), video, | |
1601 | s_mbus_fmt, &mf); | |
3dac322d GL |
1602 | if (ret < 0) |
1603 | return ret; | |
1604 | ||
1605 | dev_geo(dev, "New camera output %ux%u\n", mf.width, mf.height); | |
1606 | scale_cam_h = calc_generic_scale(cam_rect->width, mf.width); | |
1607 | scale_cam_v = calc_generic_scale(cam_rect->height, mf.height); | |
1608 | interm_width = scale_down(rect->width, scale_cam_h); | |
1609 | interm_height = scale_down(rect->height, scale_cam_v); | |
1610 | } | |
1611 | ||
1612 | /* Cache camera output window */ | |
1613 | cam->width = mf.width; | |
1614 | cam->height = mf.height; | |
1615 | ||
e622681d GL |
1616 | if (pcdev->image_mode) { |
1617 | out_width = min(interm_width, icd->user_width); | |
1618 | out_height = min(interm_height, icd->user_height); | |
1619 | } else { | |
1620 | out_width = interm_width; | |
1621 | out_height = interm_height; | |
1622 | } | |
6a6c8786 GL |
1623 | |
1624 | /* | |
e622681d GL |
1625 | * 5. Calculate CEU scales from camera scales from results of (5) and |
1626 | * the user window | |
6a6c8786 | 1627 | */ |
e622681d GL |
1628 | scale_ceu_h = calc_scale(interm_width, &out_width); |
1629 | scale_ceu_v = calc_scale(interm_height, &out_height); | |
6a6c8786 | 1630 | |
e622681d GL |
1631 | dev_geo(dev, "5: CEU scales %u:%u\n", scale_ceu_h, scale_ceu_v); |
1632 | ||
1633 | /* Apply CEU scales. */ | |
6a6c8786 GL |
1634 | cflcr = scale_ceu_h | (scale_ceu_v << 16); |
1635 | if (cflcr != pcdev->cflcr) { | |
1636 | pcdev->cflcr = cflcr; | |
1637 | ceu_write(pcdev, CFLCR, cflcr); | |
1638 | } | |
1639 | ||
eec5ce01 GL |
1640 | icd->user_width = out_width & ~3; |
1641 | icd->user_height = out_height & ~3; | |
1642 | /* Offsets are applied at the CEU scaling filter input */ | |
787d0f9d GL |
1643 | cam->ceu_left = scale_down(rect->left - cam_rect->left, scale_cam_h) & ~1; |
1644 | cam->ceu_top = scale_down(rect->top - cam_rect->top, scale_cam_v) & ~1; | |
e622681d GL |
1645 | |
1646 | /* 6. Use CEU cropping to crop to the new window. */ | |
1647 | sh_mobile_ceu_set_rect(icd); | |
1648 | ||
1649 | cam->subrect = *rect; | |
1650 | ||
1651 | dev_geo(dev, "6: CEU cropped to %ux%u@%u:%u\n", | |
1652 | icd->user_width, icd->user_height, | |
1653 | cam->ceu_left, cam->ceu_top); | |
1654 | ||
787d0f9d | 1655 | /* Restore capture. The CE bit can be cleared by the hardware */ |
904078f1 GL |
1656 | if (pcdev->active) |
1657 | capsr |= 1; | |
904078f1 GL |
1658 | capture_restore(pcdev, capsr); |
1659 | ||
904078f1 GL |
1660 | /* Even if only camera cropping succeeded */ |
1661 | return ret; | |
09e231b3 GL |
1662 | } |
1663 | ||
e622681d GL |
1664 | static int sh_mobile_ceu_get_crop(struct soc_camera_device *icd, |
1665 | struct v4l2_crop *a) | |
1666 | { | |
1667 | struct sh_mobile_ceu_cam *cam = icd->host_priv; | |
1668 | ||
1669 | a->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; | |
1670 | a->c = cam->subrect; | |
1671 | ||
1672 | return 0; | |
1673 | } | |
1674 | ||
1675 | /* | |
1676 | * Calculate real client output window by applying new scales to the current | |
1677 | * client crop. New scales are calculated from the requested output format and | |
1678 | * CEU crop, mapped backed onto the client input (subrect). | |
1679 | */ | |
1680 | static void calculate_client_output(struct soc_camera_device *icd, | |
eec5ce01 | 1681 | const struct v4l2_pix_format *pix, struct v4l2_mbus_framefmt *mf) |
e622681d GL |
1682 | { |
1683 | struct sh_mobile_ceu_cam *cam = icd->host_priv; | |
7dfff953 | 1684 | struct device *dev = icd->parent; |
e622681d GL |
1685 | struct v4l2_rect *cam_subrect = &cam->subrect; |
1686 | unsigned int scale_v, scale_h; | |
1687 | ||
1688 | if (cam_subrect->width == cam->rect.width && | |
1689 | cam_subrect->height == cam->rect.height) { | |
1690 | /* No sub-cropping */ | |
1691 | mf->width = pix->width; | |
1692 | mf->height = pix->height; | |
1693 | return; | |
1694 | } | |
1695 | ||
1696 | /* 1.-2. Current camera scales and subwin - cached. */ | |
1697 | ||
1698 | dev_geo(dev, "2: subwin %ux%u@%u:%u\n", | |
1699 | cam_subrect->width, cam_subrect->height, | |
1700 | cam_subrect->left, cam_subrect->top); | |
1701 | ||
1702 | /* | |
1703 | * 3. Calculate new combined scales from input sub-window to requested | |
1704 | * user window. | |
1705 | */ | |
1706 | ||
1707 | /* | |
1708 | * TODO: CEU cannot scale images larger than VGA to smaller than SubQCIF | |
1709 | * (128x96) or larger than VGA | |
1710 | */ | |
1711 | scale_h = calc_generic_scale(cam_subrect->width, pix->width); | |
1712 | scale_v = calc_generic_scale(cam_subrect->height, pix->height); | |
1713 | ||
1714 | dev_geo(dev, "3: scales %u:%u\n", scale_h, scale_v); | |
1715 | ||
1716 | /* | |
36988741 GL |
1717 | * 4. Calculate desired client output window by applying combined scales |
1718 | * to client (real) input window. | |
e622681d GL |
1719 | */ |
1720 | mf->width = scale_down(cam->rect.width, scale_h); | |
1721 | mf->height = scale_down(cam->rect.height, scale_v); | |
1722 | } | |
1723 | ||
961801bb | 1724 | /* Similar to set_crop multistage iterative algorithm */ |
d8fac217 | 1725 | static int sh_mobile_ceu_set_fmt(struct soc_camera_device *icd, |
09e231b3 | 1726 | struct v4l2_format *f) |
0d3244d6 | 1727 | { |
7dfff953 GL |
1728 | struct device *dev = icd->parent; |
1729 | struct soc_camera_host *ici = to_soc_camera_host(dev); | |
961801bb | 1730 | struct sh_mobile_ceu_dev *pcdev = ici->priv; |
904078f1 GL |
1731 | struct sh_mobile_ceu_cam *cam = icd->host_priv; |
1732 | struct v4l2_pix_format *pix = &f->fmt.pix; | |
760697be | 1733 | struct v4l2_mbus_framefmt mf; |
904078f1 | 1734 | __u32 pixfmt = pix->pixelformat; |
9414de39 | 1735 | const struct soc_camera_format_xlate *xlate; |
b3b5020d GL |
1736 | /* Keep Compiler Happy */ |
1737 | unsigned int ceu_sub_width = 0, ceu_sub_height = 0; | |
6a6c8786 GL |
1738 | u16 scale_v, scale_h; |
1739 | int ret; | |
1edcc10d KM |
1740 | bool image_mode; |
1741 | enum v4l2_field field; | |
961801bb GL |
1742 | |
1743 | switch (pix->field) { | |
961801bb GL |
1744 | default: |
1745 | pix->field = V4L2_FIELD_NONE; | |
1746 | /* fall-through */ | |
1edcc10d KM |
1747 | case V4L2_FIELD_INTERLACED_TB: |
1748 | case V4L2_FIELD_INTERLACED_BT: | |
961801bb | 1749 | case V4L2_FIELD_NONE: |
1edcc10d KM |
1750 | field = pix->field; |
1751 | break; | |
1752 | case V4L2_FIELD_INTERLACED: | |
1753 | field = V4L2_FIELD_INTERLACED_TB; | |
961801bb GL |
1754 | break; |
1755 | } | |
25c4d74e | 1756 | |
9414de39 MD |
1757 | xlate = soc_camera_xlate_by_fourcc(icd, pixfmt); |
1758 | if (!xlate) { | |
6a6c8786 | 1759 | dev_warn(dev, "Format %x not found\n", pixfmt); |
9414de39 | 1760 | return -EINVAL; |
25c4d74e GL |
1761 | } |
1762 | ||
36988741 | 1763 | /* 1.-4. Calculate desired client output geometry */ |
eec5ce01 | 1764 | calculate_client_output(icd, pix, &mf); |
760697be GL |
1765 | mf.field = pix->field; |
1766 | mf.colorspace = pix->colorspace; | |
1767 | mf.code = xlate->code; | |
6a6c8786 | 1768 | |
961801bb GL |
1769 | switch (pixfmt) { |
1770 | case V4L2_PIX_FMT_NV12: | |
1771 | case V4L2_PIX_FMT_NV21: | |
1772 | case V4L2_PIX_FMT_NV16: | |
1773 | case V4L2_PIX_FMT_NV61: | |
6a6c8786 | 1774 | image_mode = true; |
961801bb GL |
1775 | break; |
1776 | default: | |
6a6c8786 | 1777 | image_mode = false; |
9414de39 | 1778 | } |
25c4d74e | 1779 | |
b5518a41 | 1780 | dev_geo(dev, "S_FMT(pix=0x%x, fld 0x%x, code 0x%x, %ux%u)\n", pixfmt, mf.field, mf.code, |
e1db7043 GL |
1781 | pix->width, pix->height); |
1782 | ||
e622681d | 1783 | dev_geo(dev, "4: request camera output %ux%u\n", mf.width, mf.height); |
961801bb | 1784 | |
6a6c8786 | 1785 | /* 5. - 9. */ |
e622681d | 1786 | ret = client_scale(icd, &mf, &ceu_sub_width, &ceu_sub_height, |
1edcc10d | 1787 | image_mode && V4L2_FIELD_NONE == field); |
6a6c8786 | 1788 | |
e622681d | 1789 | dev_geo(dev, "5-9: client scale return %d\n", ret); |
6a6c8786 GL |
1790 | |
1791 | /* Done with the camera. Now see if we can improve the result */ | |
1792 | ||
b3b5020d GL |
1793 | dev_geo(dev, "fmt %ux%u, requested %ux%u\n", |
1794 | mf.width, mf.height, pix->width, pix->height); | |
6a6c8786 GL |
1795 | if (ret < 0) |
1796 | return ret; | |
1797 | ||
760697be GL |
1798 | if (mf.code != xlate->code) |
1799 | return -EINVAL; | |
1800 | ||
e622681d GL |
1801 | /* 9. Prepare CEU crop */ |
1802 | cam->width = mf.width; | |
1803 | cam->height = mf.height; | |
1804 | ||
6a6c8786 | 1805 | /* 10. Use CEU scaling to scale to the requested user window. */ |
961801bb GL |
1806 | |
1807 | /* We cannot scale up */ | |
e622681d GL |
1808 | if (pix->width > ceu_sub_width) |
1809 | ceu_sub_width = pix->width; | |
961801bb | 1810 | |
e622681d GL |
1811 | if (pix->height > ceu_sub_height) |
1812 | ceu_sub_height = pix->height; | |
961801bb | 1813 | |
760697be GL |
1814 | pix->colorspace = mf.colorspace; |
1815 | ||
1816 | if (image_mode) { | |
1817 | /* Scale pix->{width x height} down to width x height */ | |
e622681d GL |
1818 | scale_h = calc_scale(ceu_sub_width, &pix->width); |
1819 | scale_v = calc_scale(ceu_sub_height, &pix->height); | |
760697be | 1820 | } else { |
e622681d GL |
1821 | pix->width = ceu_sub_width; |
1822 | pix->height = ceu_sub_height; | |
1823 | scale_h = 0; | |
1824 | scale_v = 0; | |
760697be | 1825 | } |
961801bb | 1826 | |
e622681d GL |
1827 | pcdev->cflcr = scale_h | (scale_v << 16); |
1828 | ||
1829 | /* | |
1830 | * We have calculated CFLCR, the actual configuration will be performed | |
1831 | * in sh_mobile_ceu_set_bus_param() | |
1832 | */ | |
1833 | ||
6a6c8786 | 1834 | dev_geo(dev, "10: W: %u : 0x%x = %u, H: %u : 0x%x = %u\n", |
e622681d GL |
1835 | ceu_sub_width, scale_h, pix->width, |
1836 | ceu_sub_height, scale_v, pix->height); | |
961801bb | 1837 | |
760697be | 1838 | cam->code = xlate->code; |
760697be | 1839 | icd->current_fmt = xlate; |
961801bb | 1840 | |
1edcc10d | 1841 | pcdev->field = field; |
6a6c8786 | 1842 | pcdev->image_mode = image_mode; |
961801bb | 1843 | |
eec5ce01 GL |
1844 | /* CFSZR requirement */ |
1845 | pix->width &= ~3; | |
1846 | pix->height &= ~3; | |
1847 | ||
961801bb | 1848 | return 0; |
0d3244d6 MD |
1849 | } |
1850 | ||
d8fac217 GL |
1851 | static int sh_mobile_ceu_try_fmt(struct soc_camera_device *icd, |
1852 | struct v4l2_format *f) | |
0d3244d6 | 1853 | { |
48e971cd GL |
1854 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
1855 | struct sh_mobile_ceu_dev *pcdev = ici->priv; | |
9414de39 | 1856 | const struct soc_camera_format_xlate *xlate; |
904078f1 | 1857 | struct v4l2_pix_format *pix = &f->fmt.pix; |
c9c1f1c0 | 1858 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
760697be | 1859 | struct v4l2_mbus_framefmt mf; |
904078f1 | 1860 | __u32 pixfmt = pix->pixelformat; |
961801bb | 1861 | int width, height; |
ccab8a29 | 1862 | int ret; |
a2c8c68c | 1863 | |
7dfff953 | 1864 | dev_geo(icd->parent, "TRY_FMT(pix=0x%x, %ux%u)\n", |
b3b5020d GL |
1865 | pixfmt, pix->width, pix->height); |
1866 | ||
9414de39 MD |
1867 | xlate = soc_camera_xlate_by_fourcc(icd, pixfmt); |
1868 | if (!xlate) { | |
7dfff953 | 1869 | dev_warn(icd->parent, "Format %x not found\n", pixfmt); |
25c4d74e | 1870 | return -EINVAL; |
9414de39 | 1871 | } |
25c4d74e | 1872 | |
0d3244d6 MD |
1873 | /* FIXME: calculate using depth and bus width */ |
1874 | ||
eec5ce01 | 1875 | /* CFSZR requires height and width to be 4-pixel aligned */ |
48e971cd GL |
1876 | v4l_bound_align_image(&pix->width, 2, pcdev->max_width, 2, |
1877 | &pix->height, 4, pcdev->max_height, 2, 0); | |
0d3244d6 | 1878 | |
961801bb GL |
1879 | width = pix->width; |
1880 | height = pix->height; | |
1881 | ||
0d3244d6 | 1882 | /* limit to sensor capabilities */ |
760697be GL |
1883 | mf.width = pix->width; |
1884 | mf.height = pix->height; | |
1885 | mf.field = pix->field; | |
1886 | mf.code = xlate->code; | |
1887 | mf.colorspace = pix->colorspace; | |
1888 | ||
4c0b036d GL |
1889 | ret = v4l2_device_call_until_err(sd->v4l2_dev, soc_camera_grp_id(icd), |
1890 | video, try_mbus_fmt, &mf); | |
ccab8a29 KM |
1891 | if (ret < 0) |
1892 | return ret; | |
1893 | ||
760697be GL |
1894 | pix->width = mf.width; |
1895 | pix->height = mf.height; | |
1896 | pix->field = mf.field; | |
1897 | pix->colorspace = mf.colorspace; | |
1898 | ||
961801bb GL |
1899 | switch (pixfmt) { |
1900 | case V4L2_PIX_FMT_NV12: | |
1901 | case V4L2_PIX_FMT_NV21: | |
1902 | case V4L2_PIX_FMT_NV16: | |
1903 | case V4L2_PIX_FMT_NV61: | |
1904 | /* FIXME: check against rect_max after converting soc-camera */ | |
1905 | /* We can scale precisely, need a bigger image from camera */ | |
1906 | if (pix->width < width || pix->height < height) { | |
760697be GL |
1907 | /* |
1908 | * We presume, the sensor behaves sanely, i.e., if | |
1909 | * requested a bigger rectangle, it will not return a | |
1910 | * smaller one. | |
1911 | */ | |
48e971cd GL |
1912 | mf.width = pcdev->max_width; |
1913 | mf.height = pcdev->max_height; | |
4c0b036d GL |
1914 | ret = v4l2_device_call_until_err(sd->v4l2_dev, |
1915 | soc_camera_grp_id(icd), video, | |
1916 | try_mbus_fmt, &mf); | |
961801bb GL |
1917 | if (ret < 0) { |
1918 | /* Shouldn't actually happen... */ | |
7dfff953 | 1919 | dev_err(icd->parent, |
760697be GL |
1920 | "FIXME: client try_fmt() = %d\n", ret); |
1921 | return ret; | |
961801bb GL |
1922 | } |
1923 | } | |
760697be GL |
1924 | /* We will scale exactly */ |
1925 | if (mf.width > width) | |
961801bb | 1926 | pix->width = width; |
760697be | 1927 | if (mf.height > height) |
961801bb | 1928 | pix->height = height; |
ccab8a29 KM |
1929 | } |
1930 | ||
eec5ce01 GL |
1931 | pix->width &= ~3; |
1932 | pix->height &= ~3; | |
1933 | ||
7dfff953 | 1934 | dev_geo(icd->parent, "%s(): return %d, fmt 0x%x, %ux%u\n", |
b3b5020d GL |
1935 | __func__, ret, pix->pixelformat, pix->width, pix->height); |
1936 | ||
ccab8a29 | 1937 | return ret; |
0d3244d6 MD |
1938 | } |
1939 | ||
3dac322d GL |
1940 | static int sh_mobile_ceu_set_livecrop(struct soc_camera_device *icd, |
1941 | struct v4l2_crop *a) | |
1942 | { | |
1943 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); | |
7dfff953 | 1944 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
3dac322d GL |
1945 | struct sh_mobile_ceu_dev *pcdev = ici->priv; |
1946 | u32 out_width = icd->user_width, out_height = icd->user_height; | |
1947 | int ret; | |
1948 | ||
1949 | /* Freeze queue */ | |
1950 | pcdev->frozen = 1; | |
1951 | /* Wait for frame */ | |
1952 | ret = wait_for_completion_interruptible(&pcdev->complete); | |
1953 | /* Stop the client */ | |
1954 | ret = v4l2_subdev_call(sd, video, s_stream, 0); | |
1955 | if (ret < 0) | |
7dfff953 | 1956 | dev_warn(icd->parent, |
3dac322d GL |
1957 | "Client failed to stop the stream: %d\n", ret); |
1958 | else | |
1959 | /* Do the crop, if it fails, there's nothing more we can do */ | |
1960 | sh_mobile_ceu_set_crop(icd, a); | |
1961 | ||
7dfff953 | 1962 | dev_geo(icd->parent, "Output after crop: %ux%u\n", icd->user_width, icd->user_height); |
3dac322d GL |
1963 | |
1964 | if (icd->user_width != out_width || icd->user_height != out_height) { | |
1965 | struct v4l2_format f = { | |
1966 | .type = V4L2_BUF_TYPE_VIDEO_CAPTURE, | |
1967 | .fmt.pix = { | |
1968 | .width = out_width, | |
1969 | .height = out_height, | |
1970 | .pixelformat = icd->current_fmt->host_fmt->fourcc, | |
1971 | .field = pcdev->field, | |
1972 | .colorspace = icd->colorspace, | |
1973 | }, | |
1974 | }; | |
1975 | ret = sh_mobile_ceu_set_fmt(icd, &f); | |
1976 | if (!ret && (out_width != f.fmt.pix.width || | |
1977 | out_height != f.fmt.pix.height)) | |
1978 | ret = -EINVAL; | |
1979 | if (!ret) { | |
eec5ce01 GL |
1980 | icd->user_width = out_width & ~3; |
1981 | icd->user_height = out_height & ~3; | |
8843d119 | 1982 | ret = sh_mobile_ceu_set_bus_param(icd); |
3dac322d GL |
1983 | } |
1984 | } | |
1985 | ||
1986 | /* Thaw the queue */ | |
1987 | pcdev->frozen = 0; | |
1988 | spin_lock_irq(&pcdev->lock); | |
1989 | sh_mobile_ceu_capture(pcdev); | |
1990 | spin_unlock_irq(&pcdev->lock); | |
1991 | /* Start the client */ | |
1992 | ret = v4l2_subdev_call(sd, video, s_stream, 1); | |
1993 | return ret; | |
1994 | } | |
1995 | ||
0d3244d6 MD |
1996 | static unsigned int sh_mobile_ceu_poll(struct file *file, poll_table *pt) |
1997 | { | |
57bee29d | 1998 | struct soc_camera_device *icd = file->private_data; |
0d3244d6 | 1999 | |
a616898d | 2000 | return vb2_poll(&icd->vb2_vidq, file, pt); |
0d3244d6 MD |
2001 | } |
2002 | ||
2003 | static int sh_mobile_ceu_querycap(struct soc_camera_host *ici, | |
2004 | struct v4l2_capability *cap) | |
2005 | { | |
2006 | strlcpy(cap->card, "SuperH_Mobile_CEU", sizeof(cap->card)); | |
0d3244d6 MD |
2007 | cap->capabilities = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING; |
2008 | return 0; | |
2009 | } | |
2010 | ||
a616898d GL |
2011 | static int sh_mobile_ceu_init_videobuf(struct vb2_queue *q, |
2012 | struct soc_camera_device *icd) | |
0d3244d6 | 2013 | { |
a616898d GL |
2014 | q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; |
2015 | q->io_modes = VB2_MMAP | VB2_USERPTR; | |
2016 | q->drv_priv = icd; | |
2017 | q->ops = &sh_mobile_ceu_videobuf_ops; | |
2018 | q->mem_ops = &vb2_dma_contig_memops; | |
2019 | q->buf_struct_size = sizeof(struct sh_mobile_ceu_buffer); | |
2020 | ||
2021 | return vb2_queue_init(q); | |
0d3244d6 MD |
2022 | } |
2023 | ||
2024 | static struct soc_camera_host_ops sh_mobile_ceu_host_ops = { | |
2025 | .owner = THIS_MODULE, | |
2026 | .add = sh_mobile_ceu_add_device, | |
2027 | .remove = sh_mobile_ceu_remove_device, | |
9414de39 | 2028 | .get_formats = sh_mobile_ceu_get_formats, |
904078f1 | 2029 | .put_formats = sh_mobile_ceu_put_formats, |
e622681d | 2030 | .get_crop = sh_mobile_ceu_get_crop, |
09e231b3 | 2031 | .set_crop = sh_mobile_ceu_set_crop, |
3dac322d | 2032 | .set_livecrop = sh_mobile_ceu_set_livecrop, |
d8fac217 GL |
2033 | .set_fmt = sh_mobile_ceu_set_fmt, |
2034 | .try_fmt = sh_mobile_ceu_try_fmt, | |
0d3244d6 MD |
2035 | .poll = sh_mobile_ceu_poll, |
2036 | .querycap = sh_mobile_ceu_querycap, | |
0d3244d6 | 2037 | .set_bus_param = sh_mobile_ceu_set_bus_param, |
a616898d | 2038 | .init_videobuf2 = sh_mobile_ceu_init_videobuf, |
0d3244d6 MD |
2039 | }; |
2040 | ||
b3b5020d GL |
2041 | struct bus_wait { |
2042 | struct notifier_block notifier; | |
2043 | struct completion completion; | |
2044 | struct device *dev; | |
2045 | }; | |
2046 | ||
2047 | static int bus_notify(struct notifier_block *nb, | |
2048 | unsigned long action, void *data) | |
2049 | { | |
2050 | struct device *dev = data; | |
2051 | struct bus_wait *wait = container_of(nb, struct bus_wait, notifier); | |
2052 | ||
2053 | if (wait->dev != dev) | |
2054 | return NOTIFY_DONE; | |
2055 | ||
2056 | switch (action) { | |
2057 | case BUS_NOTIFY_UNBOUND_DRIVER: | |
2058 | /* Protect from module unloading */ | |
2059 | wait_for_completion(&wait->completion); | |
2060 | return NOTIFY_OK; | |
2061 | } | |
2062 | return NOTIFY_DONE; | |
2063 | } | |
2064 | ||
979ea1dd | 2065 | static int __devinit sh_mobile_ceu_probe(struct platform_device *pdev) |
0d3244d6 MD |
2066 | { |
2067 | struct sh_mobile_ceu_dev *pcdev; | |
2068 | struct resource *res; | |
2069 | void __iomem *base; | |
2070 | unsigned int irq; | |
2071 | int err = 0; | |
b3b5020d GL |
2072 | struct bus_wait wait = { |
2073 | .completion = COMPLETION_INITIALIZER_ONSTACK(wait.completion), | |
2074 | .notifier.notifier_call = bus_notify, | |
2075 | }; | |
6b526fed | 2076 | struct sh_mobile_ceu_companion *csi2; |
0d3244d6 MD |
2077 | |
2078 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); | |
2079 | irq = platform_get_irq(pdev, 0); | |
b89fc2e5 | 2080 | if (!res || (int)irq <= 0) { |
0d3244d6 MD |
2081 | dev_err(&pdev->dev, "Not enough CEU platform resources.\n"); |
2082 | err = -ENODEV; | |
2083 | goto exit; | |
2084 | } | |
2085 | ||
2086 | pcdev = kzalloc(sizeof(*pcdev), GFP_KERNEL); | |
2087 | if (!pcdev) { | |
2088 | dev_err(&pdev->dev, "Could not allocate pcdev\n"); | |
2089 | err = -ENOMEM; | |
2090 | goto exit; | |
2091 | } | |
2092 | ||
0d3244d6 MD |
2093 | INIT_LIST_HEAD(&pcdev->capture); |
2094 | spin_lock_init(&pcdev->lock); | |
3dac322d | 2095 | init_completion(&pcdev->complete); |
0d3244d6 MD |
2096 | |
2097 | pcdev->pdata = pdev->dev.platform_data; | |
2098 | if (!pcdev->pdata) { | |
2099 | err = -EINVAL; | |
2100 | dev_err(&pdev->dev, "CEU platform data not set.\n"); | |
2101 | goto exit_kfree; | |
2102 | } | |
2103 | ||
48e971cd GL |
2104 | pcdev->max_width = pcdev->pdata->max_width ? : 2560; |
2105 | pcdev->max_height = pcdev->pdata->max_height ? : 1920; | |
2106 | ||
eb6c8558 | 2107 | base = ioremap_nocache(res->start, resource_size(res)); |
0d3244d6 MD |
2108 | if (!base) { |
2109 | err = -ENXIO; | |
2110 | dev_err(&pdev->dev, "Unable to ioremap CEU registers.\n"); | |
2111 | goto exit_kfree; | |
2112 | } | |
2113 | ||
2114 | pcdev->irq = irq; | |
2115 | pcdev->base = base; | |
2116 | pcdev->video_limit = 0; /* only enabled if second resource exists */ | |
0d3244d6 MD |
2117 | |
2118 | res = platform_get_resource(pdev, IORESOURCE_MEM, 1); | |
2119 | if (res) { | |
2120 | err = dma_declare_coherent_memory(&pdev->dev, res->start, | |
2121 | res->start, | |
eb6c8558 | 2122 | resource_size(res), |
0d3244d6 MD |
2123 | DMA_MEMORY_MAP | |
2124 | DMA_MEMORY_EXCLUSIVE); | |
2125 | if (!err) { | |
2126 | dev_err(&pdev->dev, "Unable to declare CEU memory.\n"); | |
2127 | err = -ENXIO; | |
2128 | goto exit_iounmap; | |
2129 | } | |
2130 | ||
eb6c8558 | 2131 | pcdev->video_limit = resource_size(res); |
0d3244d6 MD |
2132 | } |
2133 | ||
2134 | /* request irq */ | |
2135 | err = request_irq(pcdev->irq, sh_mobile_ceu_irq, IRQF_DISABLED, | |
af128a10 | 2136 | dev_name(&pdev->dev), pcdev); |
0d3244d6 MD |
2137 | if (err) { |
2138 | dev_err(&pdev->dev, "Unable to register CEU interrupt.\n"); | |
2139 | goto exit_release_mem; | |
2140 | } | |
2141 | ||
6d1386c6 MD |
2142 | pm_suspend_ignore_children(&pdev->dev, true); |
2143 | pm_runtime_enable(&pdev->dev); | |
2144 | pm_runtime_resume(&pdev->dev); | |
a42b6dd6 | 2145 | |
0d3244d6 | 2146 | pcdev->ici.priv = pcdev; |
979ea1dd | 2147 | pcdev->ici.v4l2_dev.dev = &pdev->dev; |
0d3244d6 | 2148 | pcdev->ici.nr = pdev->id; |
af128a10 KS |
2149 | pcdev->ici.drv_name = dev_name(&pdev->dev); |
2150 | pcdev->ici.ops = &sh_mobile_ceu_host_ops; | |
0d3244d6 | 2151 | |
6b526fed GL |
2152 | pcdev->alloc_ctx = vb2_dma_contig_init_ctx(&pdev->dev); |
2153 | if (IS_ERR(pcdev->alloc_ctx)) { | |
2154 | err = PTR_ERR(pcdev->alloc_ctx); | |
2155 | goto exit_free_clk; | |
2156 | } | |
2157 | ||
2158 | err = soc_camera_host_register(&pcdev->ici); | |
2159 | if (err) | |
2160 | goto exit_free_ctx; | |
2161 | ||
b3b5020d | 2162 | /* CSI2 interfacing */ |
6b526fed | 2163 | csi2 = pcdev->pdata->csi2; |
b3b5020d | 2164 | if (csi2) { |
6b526fed GL |
2165 | struct platform_device *csi2_pdev = |
2166 | platform_device_alloc("sh-mobile-csi2", csi2->id); | |
2167 | struct sh_csi2_pdata *csi2_pdata = csi2->platform_data; | |
2168 | ||
2169 | if (!csi2_pdev) { | |
2170 | err = -ENOMEM; | |
2171 | goto exit_host_unregister; | |
2172 | } | |
2173 | ||
2174 | pcdev->csi2_pdev = csi2_pdev; | |
2175 | ||
2176 | err = platform_device_add_data(csi2_pdev, csi2_pdata, sizeof(*csi2_pdata)); | |
2177 | if (err < 0) | |
2178 | goto exit_pdev_put; | |
2179 | ||
2180 | csi2_pdata = csi2_pdev->dev.platform_data; | |
2181 | csi2_pdata->v4l2_dev = &pcdev->ici.v4l2_dev; | |
2182 | ||
2183 | csi2_pdev->resource = csi2->resource; | |
2184 | csi2_pdev->num_resources = csi2->num_resources; | |
2185 | ||
2186 | err = platform_device_add(csi2_pdev); | |
2187 | if (err < 0) | |
2188 | goto exit_pdev_put; | |
2189 | ||
2190 | wait.dev = &csi2_pdev->dev; | |
b3b5020d GL |
2191 | |
2192 | err = bus_register_notifier(&platform_bus_type, &wait.notifier); | |
2193 | if (err < 0) | |
6b526fed | 2194 | goto exit_pdev_unregister; |
b3b5020d GL |
2195 | |
2196 | /* | |
2197 | * From this point the driver module will not unload, until | |
2198 | * we complete the completion. | |
2199 | */ | |
2200 | ||
6b526fed | 2201 | if (!csi2_pdev->dev.driver) { |
b3b5020d GL |
2202 | complete(&wait.completion); |
2203 | /* Either too late, or probing failed */ | |
2204 | bus_unregister_notifier(&platform_bus_type, &wait.notifier); | |
2205 | err = -ENXIO; | |
6b526fed | 2206 | goto exit_pdev_unregister; |
b3b5020d GL |
2207 | } |
2208 | ||
2209 | /* | |
2210 | * The module is still loaded, in the worst case it is hanging | |
2211 | * in device release on our completion. So, _now_ dereferencing | |
2212 | * the "owner" is safe! | |
2213 | */ | |
2214 | ||
6b526fed | 2215 | err = try_module_get(csi2_pdev->dev.driver->owner); |
b3b5020d GL |
2216 | |
2217 | /* Let notifier complete, if it has been locked */ | |
2218 | complete(&wait.completion); | |
2219 | bus_unregister_notifier(&platform_bus_type, &wait.notifier); | |
2220 | if (!err) { | |
2221 | err = -ENODEV; | |
6b526fed | 2222 | goto exit_pdev_unregister; |
b3b5020d GL |
2223 | } |
2224 | } | |
2225 | ||
0d3244d6 MD |
2226 | return 0; |
2227 | ||
6b526fed GL |
2228 | exit_pdev_unregister: |
2229 | platform_device_del(pcdev->csi2_pdev); | |
2230 | exit_pdev_put: | |
2231 | pcdev->csi2_pdev->resource = NULL; | |
2232 | platform_device_put(pcdev->csi2_pdev); | |
2233 | exit_host_unregister: | |
2234 | soc_camera_host_unregister(&pcdev->ici); | |
a616898d GL |
2235 | exit_free_ctx: |
2236 | vb2_dma_contig_cleanup_ctx(pcdev->alloc_ctx); | |
055e05a0 KM |
2237 | exit_free_clk: |
2238 | pm_runtime_disable(&pdev->dev); | |
0d3244d6 MD |
2239 | free_irq(pcdev->irq, pcdev); |
2240 | exit_release_mem: | |
2241 | if (platform_get_resource(pdev, IORESOURCE_MEM, 1)) | |
2242 | dma_release_declared_memory(&pdev->dev); | |
2243 | exit_iounmap: | |
2244 | iounmap(base); | |
2245 | exit_kfree: | |
2246 | kfree(pcdev); | |
2247 | exit: | |
2248 | return err; | |
2249 | } | |
2250 | ||
979ea1dd | 2251 | static int __devexit sh_mobile_ceu_remove(struct platform_device *pdev) |
0d3244d6 | 2252 | { |
eff505fa GL |
2253 | struct soc_camera_host *soc_host = to_soc_camera_host(&pdev->dev); |
2254 | struct sh_mobile_ceu_dev *pcdev = container_of(soc_host, | |
2255 | struct sh_mobile_ceu_dev, ici); | |
6b526fed | 2256 | struct platform_device *csi2_pdev = pcdev->csi2_pdev; |
0d3244d6 | 2257 | |
eff505fa | 2258 | soc_camera_host_unregister(soc_host); |
055e05a0 | 2259 | pm_runtime_disable(&pdev->dev); |
0d3244d6 MD |
2260 | free_irq(pcdev->irq, pcdev); |
2261 | if (platform_get_resource(pdev, IORESOURCE_MEM, 1)) | |
2262 | dma_release_declared_memory(&pdev->dev); | |
2263 | iounmap(pcdev->base); | |
a616898d | 2264 | vb2_dma_contig_cleanup_ctx(pcdev->alloc_ctx); |
6b526fed GL |
2265 | if (csi2_pdev && csi2_pdev->dev.driver) { |
2266 | struct module *csi2_drv = csi2_pdev->dev.driver->owner; | |
2267 | platform_device_del(csi2_pdev); | |
2268 | csi2_pdev->resource = NULL; | |
2269 | platform_device_put(csi2_pdev); | |
2270 | module_put(csi2_drv); | |
2271 | } | |
0d3244d6 | 2272 | kfree(pcdev); |
b3b5020d | 2273 | |
0d3244d6 MD |
2274 | return 0; |
2275 | } | |
2276 | ||
6d1386c6 MD |
2277 | static int sh_mobile_ceu_runtime_nop(struct device *dev) |
2278 | { | |
2279 | /* Runtime PM callback shared between ->runtime_suspend() | |
2280 | * and ->runtime_resume(). Simply returns success. | |
2281 | * | |
2282 | * This driver re-initializes all registers after | |
2283 | * pm_runtime_get_sync() anyway so there is no need | |
2284 | * to save and restore registers here. | |
2285 | */ | |
2286 | return 0; | |
2287 | } | |
2288 | ||
47145210 | 2289 | static const struct dev_pm_ops sh_mobile_ceu_dev_pm_ops = { |
6d1386c6 MD |
2290 | .runtime_suspend = sh_mobile_ceu_runtime_nop, |
2291 | .runtime_resume = sh_mobile_ceu_runtime_nop, | |
2292 | }; | |
2293 | ||
0d3244d6 MD |
2294 | static struct platform_driver sh_mobile_ceu_driver = { |
2295 | .driver = { | |
2296 | .name = "sh_mobile_ceu", | |
6d1386c6 | 2297 | .pm = &sh_mobile_ceu_dev_pm_ops, |
0d3244d6 MD |
2298 | }, |
2299 | .probe = sh_mobile_ceu_probe, | |
50e55fd1 | 2300 | .remove = __devexit_p(sh_mobile_ceu_remove), |
0d3244d6 MD |
2301 | }; |
2302 | ||
2303 | static int __init sh_mobile_ceu_init(void) | |
2304 | { | |
b3b5020d GL |
2305 | /* Whatever return code */ |
2306 | request_module("sh_mobile_csi2"); | |
0d3244d6 MD |
2307 | return platform_driver_register(&sh_mobile_ceu_driver); |
2308 | } | |
2309 | ||
2310 | static void __exit sh_mobile_ceu_exit(void) | |
2311 | { | |
01c1e4ca | 2312 | platform_driver_unregister(&sh_mobile_ceu_driver); |
0d3244d6 MD |
2313 | } |
2314 | ||
2315 | module_init(sh_mobile_ceu_init); | |
2316 | module_exit(sh_mobile_ceu_exit); | |
2317 | ||
2318 | MODULE_DESCRIPTION("SuperH Mobile CEU driver"); | |
2319 | MODULE_AUTHOR("Magnus Damm"); | |
2320 | MODULE_LICENSE("GPL"); | |
64dc3c1a | 2321 | MODULE_VERSION("0.0.6"); |
40e2e092 | 2322 | MODULE_ALIAS("platform:sh_mobile_ceu"); |