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> | |
15a09342 | 23 | #include <linux/err.h> |
0d3244d6 MD |
24 | #include <linux/errno.h> |
25 | #include <linux/fs.h> | |
26 | #include <linux/interrupt.h> | |
27 | #include <linux/kernel.h> | |
28 | #include <linux/mm.h> | |
29 | #include <linux/moduleparam.h> | |
f146e4e7 | 30 | #include <linux/of.h> |
0d3244d6 | 31 | #include <linux/time.h> |
5a0e3ad6 | 32 | #include <linux/slab.h> |
0d3244d6 MD |
33 | #include <linux/device.h> |
34 | #include <linux/platform_device.h> | |
0d3244d6 | 35 | #include <linux/videodev2.h> |
6d1386c6 | 36 | #include <linux/pm_runtime.h> |
f39c1ab3 | 37 | #include <linux/sched.h> |
0d3244d6 | 38 | |
676d2d4f | 39 | #include <media/v4l2-async.h> |
0d3244d6 MD |
40 | #include <media/v4l2-common.h> |
41 | #include <media/v4l2-dev.h> | |
42 | #include <media/soc_camera.h> | |
43 | #include <media/sh_mobile_ceu.h> | |
6b526fed | 44 | #include <media/sh_mobile_csi2.h> |
a616898d | 45 | #include <media/videobuf2-dma-contig.h> |
760697be GL |
46 | #include <media/v4l2-mediabus.h> |
47 | #include <media/soc_mediabus.h> | |
0d3244d6 | 48 | |
22e0099a GL |
49 | #include "soc_scale_crop.h" |
50 | ||
0d3244d6 MD |
51 | /* register offsets for sh7722 / sh7723 */ |
52 | ||
dd54203b MD |
53 | #define CAPSR 0x00 /* Capture start register */ |
54 | #define CAPCR 0x04 /* Capture control register */ | |
55 | #define CAMCR 0x08 /* Capture interface control register */ | |
56 | #define CMCYR 0x0c /* Capture interface cycle register */ | |
57 | #define CAMOR 0x10 /* Capture interface offset register */ | |
58 | #define CAPWR 0x14 /* Capture interface width register */ | |
59 | #define CAIFR 0x18 /* Capture interface input format register */ | |
60 | #define CSTCR 0x20 /* Camera strobe control register (<= sh7722) */ | |
61 | #define CSECR 0x24 /* Camera strobe emission count register (<= sh7722) */ | |
62 | #define CRCNTR 0x28 /* CEU register control register */ | |
63 | #define CRCMPR 0x2c /* CEU register forcible control register */ | |
64 | #define CFLCR 0x30 /* Capture filter control register */ | |
65 | #define CFSZR 0x34 /* Capture filter size clip register */ | |
66 | #define CDWDR 0x38 /* Capture destination width register */ | |
67 | #define CDAYR 0x3c /* Capture data address Y register */ | |
68 | #define CDACR 0x40 /* Capture data address C register */ | |
69 | #define CDBYR 0x44 /* Capture data bottom-field address Y register */ | |
70 | #define CDBCR 0x48 /* Capture data bottom-field address C register */ | |
71 | #define CBDSR 0x4c /* Capture bundle destination size register */ | |
72 | #define CFWCR 0x5c /* Firewall operation control register */ | |
73 | #define CLFCR 0x60 /* Capture low-pass filter control register */ | |
74 | #define CDOCR 0x64 /* Capture data output control register */ | |
75 | #define CDDCR 0x68 /* Capture data complexity level register */ | |
76 | #define CDDAR 0x6c /* Capture data complexity level address register */ | |
77 | #define CEIER 0x70 /* Capture event interrupt enable register */ | |
78 | #define CETCR 0x74 /* Capture event flag clear register */ | |
79 | #define CSTSR 0x7c /* Capture status register */ | |
80 | #define CSRTR 0x80 /* Capture software reset register */ | |
81 | #define CDSSR 0x84 /* Capture data size register */ | |
82 | #define CDAYR2 0x90 /* Capture data address Y register 2 */ | |
83 | #define CDACR2 0x94 /* Capture data address C register 2 */ | |
84 | #define CDBYR2 0x98 /* Capture data bottom-field address Y register 2 */ | |
85 | #define CDBCR2 0x9c /* Capture data bottom-field address C register 2 */ | |
0d3244d6 | 86 | |
6a6c8786 GL |
87 | #undef DEBUG_GEOMETRY |
88 | #ifdef DEBUG_GEOMETRY | |
89 | #define dev_geo dev_info | |
90 | #else | |
91 | #define dev_geo dev_dbg | |
92 | #endif | |
93 | ||
0d3244d6 MD |
94 | /* per video frame buffer */ |
95 | struct sh_mobile_ceu_buffer { | |
a616898d GL |
96 | struct vb2_buffer vb; /* v4l buffer must be first */ |
97 | struct list_head queue; | |
0d3244d6 MD |
98 | }; |
99 | ||
100 | struct sh_mobile_ceu_dev { | |
0d3244d6 | 101 | struct soc_camera_host ici; |
676d2d4f GL |
102 | /* Asynchronous CSI2 linking */ |
103 | struct v4l2_async_subdev *csi2_asd; | |
104 | struct v4l2_subdev *csi2_sd; | |
105 | /* Synchronous probing compatibility */ | |
6b526fed | 106 | struct platform_device *csi2_pdev; |
0d3244d6 MD |
107 | |
108 | unsigned int irq; | |
109 | void __iomem *base; | |
b5518a41 GL |
110 | size_t video_limit; |
111 | size_t buf_total; | |
0d3244d6 | 112 | |
a616898d | 113 | spinlock_t lock; /* Protects video buffer lists */ |
0d3244d6 | 114 | struct list_head capture; |
a616898d GL |
115 | struct vb2_buffer *active; |
116 | struct vb2_alloc_ctx *alloc_ctx; | |
0d3244d6 MD |
117 | |
118 | struct sh_mobile_ceu_info *pdata; | |
3dac322d | 119 | struct completion complete; |
8be65dc5 | 120 | |
961801bb GL |
121 | u32 cflcr; |
122 | ||
48e971cd GL |
123 | /* static max sizes either from platform data or default */ |
124 | int max_width; | |
125 | int max_height; | |
126 | ||
1edcc10d | 127 | enum v4l2_field field; |
a616898d | 128 | int sequence; |
f146e4e7 | 129 | unsigned long flags; |
1edcc10d | 130 | |
904078f1 GL |
131 | unsigned int image_mode:1; |
132 | unsigned int is_16bit:1; | |
3dac322d | 133 | unsigned int frozen:1; |
904078f1 GL |
134 | }; |
135 | ||
136 | struct sh_mobile_ceu_cam { | |
eec5ce01 | 137 | /* CEU offsets within the camera output, before the CEU scaler */ |
e622681d GL |
138 | unsigned int ceu_left; |
139 | unsigned int ceu_top; | |
140 | /* Client output, as seen by the CEU */ | |
141 | unsigned int width; | |
142 | unsigned int height; | |
143 | /* | |
144 | * User window from S_CROP / G_CROP, produced by client cropping and | |
145 | * scaling, CEU scaling and CEU cropping, mapped back onto the client | |
146 | * input window | |
147 | */ | |
148 | struct v4l2_rect subrect; | |
149 | /* Camera cropping rectangle */ | |
150 | struct v4l2_rect rect; | |
760697be | 151 | const struct soc_mbus_pixelfmt *extra_fmt; |
27ffaeb0 | 152 | u32 code; |
0d3244d6 MD |
153 | }; |
154 | ||
a616898d GL |
155 | static struct sh_mobile_ceu_buffer *to_ceu_vb(struct vb2_buffer *vb) |
156 | { | |
157 | return container_of(vb, struct sh_mobile_ceu_buffer, vb); | |
158 | } | |
159 | ||
0d3244d6 | 160 | static void ceu_write(struct sh_mobile_ceu_dev *priv, |
7a1a8164 | 161 | unsigned long reg_offs, u32 data) |
0d3244d6 MD |
162 | { |
163 | iowrite32(data, priv->base + reg_offs); | |
164 | } | |
165 | ||
7a1a8164 | 166 | static u32 ceu_read(struct sh_mobile_ceu_dev *priv, unsigned long reg_offs) |
0d3244d6 MD |
167 | { |
168 | return ioread32(priv->base + reg_offs); | |
169 | } | |
170 | ||
b1de7aeb KM |
171 | static int sh_mobile_ceu_soft_reset(struct sh_mobile_ceu_dev *pcdev) |
172 | { | |
173 | int i, success = 0; | |
b1de7aeb KM |
174 | |
175 | ceu_write(pcdev, CAPSR, 1 << 16); /* reset */ | |
176 | ||
177 | /* wait CSTSR.CPTON bit */ | |
178 | for (i = 0; i < 1000; i++) { | |
179 | if (!(ceu_read(pcdev, CSTSR) & 1)) { | |
180 | success++; | |
181 | break; | |
182 | } | |
183 | udelay(1); | |
184 | } | |
185 | ||
186 | /* wait CAPSR.CPKIL bit */ | |
187 | for (i = 0; i < 1000; i++) { | |
188 | if (!(ceu_read(pcdev, CAPSR) & (1 << 16))) { | |
189 | success++; | |
190 | break; | |
191 | } | |
192 | udelay(1); | |
193 | } | |
194 | ||
b1de7aeb | 195 | if (2 != success) { |
0ff6a6e8 | 196 | dev_warn(pcdev->ici.v4l2_dev.dev, "soft reset time out\n"); |
b1de7aeb KM |
197 | return -EIO; |
198 | } | |
199 | ||
200 | return 0; | |
201 | } | |
202 | ||
0d3244d6 MD |
203 | /* |
204 | * Videobuf operations | |
205 | */ | |
b5518a41 GL |
206 | |
207 | /* | |
208 | * .queue_setup() is called to check, whether the driver can accept the | |
209 | * requested number of buffers and to fill in plane sizes | |
210 | * for the current frame format if required | |
211 | */ | |
a616898d | 212 | static int sh_mobile_ceu_videobuf_setup(struct vb2_queue *vq, |
fc714e70 | 213 | const struct v4l2_format *fmt, |
a616898d | 214 | unsigned int *count, unsigned int *num_planes, |
035aa147 | 215 | unsigned int sizes[], void *alloc_ctxs[]) |
0d3244d6 | 216 | { |
a616898d | 217 | struct soc_camera_device *icd = container_of(vq, struct soc_camera_device, vb2_vidq); |
7dfff953 | 218 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
0d3244d6 | 219 | struct sh_mobile_ceu_dev *pcdev = ici->priv; |
0d3244d6 | 220 | |
b5518a41 GL |
221 | if (fmt) { |
222 | const struct soc_camera_format_xlate *xlate = soc_camera_xlate_by_fourcc(icd, | |
223 | fmt->fmt.pix.pixelformat); | |
bed8d803 LP |
224 | unsigned int bytes_per_line; |
225 | int ret; | |
2b61d46e | 226 | |
b5518a41 GL |
227 | if (!xlate) |
228 | return -EINVAL; | |
2b61d46e | 229 | |
bed8d803 LP |
230 | ret = soc_mbus_bytes_per_line(fmt->fmt.pix.width, |
231 | xlate->host_fmt); | |
232 | if (ret < 0) | |
233 | return ret; | |
2b61d46e | 234 | |
bed8d803 LP |
235 | bytes_per_line = max_t(u32, fmt->fmt.pix.bytesperline, ret); |
236 | ||
237 | ret = soc_mbus_image_size(xlate->host_fmt, bytes_per_line, | |
238 | fmt->fmt.pix.height); | |
239 | if (ret < 0) | |
240 | return ret; | |
241 | ||
242 | sizes[0] = max_t(u32, fmt->fmt.pix.sizeimage, ret); | |
b5518a41 GL |
243 | } else { |
244 | /* Called from VIDIOC_REQBUFS or in compatibility mode */ | |
2b61d46e | 245 | sizes[0] = icd->sizeimage; |
b5518a41 | 246 | } |
a616898d | 247 | |
a616898d | 248 | alloc_ctxs[0] = pcdev->alloc_ctx; |
0d3244d6 | 249 | |
b5518a41 GL |
250 | if (!vq->num_buffers) |
251 | pcdev->sequence = 0; | |
252 | ||
a616898d | 253 | if (!*count) |
0d3244d6 MD |
254 | *count = 2; |
255 | ||
b5518a41 GL |
256 | /* If *num_planes != 0, we have already verified *count. */ |
257 | if (pcdev->video_limit && !*num_planes) { | |
258 | size_t size = PAGE_ALIGN(sizes[0]) * *count; | |
259 | ||
260 | if (size + pcdev->buf_total > pcdev->video_limit) | |
261 | *count = (pcdev->video_limit - pcdev->buf_total) / | |
262 | PAGE_ALIGN(sizes[0]); | |
0d3244d6 MD |
263 | } |
264 | ||
b5518a41 GL |
265 | *num_planes = 1; |
266 | ||
035aa147 | 267 | dev_dbg(icd->parent, "count=%d, size=%u\n", *count, sizes[0]); |
0d3244d6 MD |
268 | |
269 | return 0; | |
270 | } | |
271 | ||
7a1a8164 MD |
272 | #define CEU_CETCR_MAGIC 0x0317f313 /* acknowledge magical interrupt sources */ |
273 | #define CEU_CETCR_IGRW (1 << 4) /* prohibited register access interrupt bit */ | |
274 | #define CEU_CEIER_CPEIE (1 << 0) /* one-frame capture end interrupt */ | |
5cf93f1d | 275 | #define CEU_CEIER_VBP (1 << 20) /* vbp error */ |
7a1a8164 | 276 | #define CEU_CAPCR_CTNCP (1 << 16) /* continuous capture mode (if set) */ |
5cf93f1d | 277 | #define CEU_CEIER_MASK (CEU_CEIER_CPEIE | CEU_CEIER_VBP) |
7a1a8164 MD |
278 | |
279 | ||
5cf93f1d KM |
280 | /* |
281 | * return value doesn't reflex the success/failure to queue the new buffer, | |
282 | * but rather the status of the previous buffer. | |
283 | */ | |
284 | static int sh_mobile_ceu_capture(struct sh_mobile_ceu_dev *pcdev) | |
0d3244d6 | 285 | { |
f7f6ce2d | 286 | struct soc_camera_device *icd = pcdev->ici.icd; |
ccab8a29 | 287 | dma_addr_t phys_addr_top, phys_addr_bottom; |
1edcc10d KM |
288 | unsigned long top1, top2; |
289 | unsigned long bottom1, bottom2; | |
5cf93f1d | 290 | u32 status; |
15f517e2 | 291 | bool planar; |
5cf93f1d | 292 | int ret = 0; |
7a1a8164 | 293 | |
5d28d525 GL |
294 | /* |
295 | * The hardware is _very_ picky about this sequence. Especially | |
7a1a8164 MD |
296 | * the CEU_CETCR_MAGIC value. It seems like we need to acknowledge |
297 | * several not-so-well documented interrupt sources in CETCR. | |
298 | */ | |
5cf93f1d KM |
299 | ceu_write(pcdev, CEIER, ceu_read(pcdev, CEIER) & ~CEU_CEIER_MASK); |
300 | status = ceu_read(pcdev, CETCR); | |
301 | ceu_write(pcdev, CETCR, ~status & CEU_CETCR_MAGIC); | |
3dac322d GL |
302 | if (!pcdev->frozen) |
303 | ceu_write(pcdev, CEIER, ceu_read(pcdev, CEIER) | CEU_CEIER_MASK); | |
7a1a8164 MD |
304 | ceu_write(pcdev, CAPCR, ceu_read(pcdev, CAPCR) & ~CEU_CAPCR_CTNCP); |
305 | ceu_write(pcdev, CETCR, CEU_CETCR_MAGIC ^ CEU_CETCR_IGRW); | |
0d3244d6 | 306 | |
5cf93f1d KM |
307 | /* |
308 | * When a VBP interrupt occurs, a capture end interrupt does not occur | |
309 | * and the image of that frame is not captured correctly. So, soft reset | |
310 | * is needed here. | |
311 | */ | |
312 | if (status & CEU_CEIER_VBP) { | |
313 | sh_mobile_ceu_soft_reset(pcdev); | |
314 | ret = -EIO; | |
315 | } | |
316 | ||
3dac322d GL |
317 | if (pcdev->frozen) { |
318 | complete(&pcdev->complete); | |
319 | return ret; | |
320 | } | |
321 | ||
8be65dc5 | 322 | if (!pcdev->active) |
5cf93f1d | 323 | return ret; |
8be65dc5 | 324 | |
1edcc10d KM |
325 | if (V4L2_FIELD_INTERLACED_BT == pcdev->field) { |
326 | top1 = CDBYR; | |
327 | top2 = CDBCR; | |
328 | bottom1 = CDAYR; | |
329 | bottom2 = CDACR; | |
330 | } else { | |
331 | top1 = CDAYR; | |
332 | top2 = CDACR; | |
333 | bottom1 = CDBYR; | |
334 | bottom2 = CDBCR; | |
335 | } | |
336 | ||
ba7fcb0c | 337 | phys_addr_top = vb2_dma_contig_plane_dma_addr(pcdev->active, 0); |
a616898d | 338 | |
760697be | 339 | switch (icd->current_fmt->host_fmt->fourcc) { |
8be65dc5 MD |
340 | case V4L2_PIX_FMT_NV12: |
341 | case V4L2_PIX_FMT_NV21: | |
9e4a56d2 MD |
342 | case V4L2_PIX_FMT_NV16: |
343 | case V4L2_PIX_FMT_NV61: | |
15f517e2 GL |
344 | planar = true; |
345 | break; | |
346 | default: | |
347 | planar = false; | |
348 | } | |
349 | ||
350 | ceu_write(pcdev, top1, phys_addr_top); | |
351 | if (V4L2_FIELD_NONE != pcdev->field) { | |
fc13baff | 352 | phys_addr_bottom = phys_addr_top + icd->bytesperline; |
15f517e2 GL |
353 | ceu_write(pcdev, bottom1, phys_addr_bottom); |
354 | } | |
355 | ||
356 | if (planar) { | |
fc13baff | 357 | phys_addr_top += icd->bytesperline * icd->user_height; |
1edcc10d KM |
358 | ceu_write(pcdev, top2, phys_addr_top); |
359 | if (V4L2_FIELD_NONE != pcdev->field) { | |
fc13baff | 360 | phys_addr_bottom = phys_addr_top + icd->bytesperline; |
1edcc10d | 361 | ceu_write(pcdev, bottom2, phys_addr_bottom); |
ccab8a29 | 362 | } |
0d3244d6 | 363 | } |
8be65dc5 | 364 | |
8be65dc5 | 365 | ceu_write(pcdev, CAPSR, 0x1); /* start capture */ |
5cf93f1d KM |
366 | |
367 | return ret; | |
0d3244d6 MD |
368 | } |
369 | ||
a616898d | 370 | static int sh_mobile_ceu_videobuf_prepare(struct vb2_buffer *vb) |
b5518a41 GL |
371 | { |
372 | struct sh_mobile_ceu_buffer *buf = to_ceu_vb(vb); | |
373 | ||
374 | /* Added list head initialization on alloc */ | |
375 | WARN(!list_empty(&buf->queue), "Buffer %p on queue!\n", vb); | |
376 | ||
377 | return 0; | |
378 | } | |
379 | ||
380 | static void sh_mobile_ceu_videobuf_queue(struct vb2_buffer *vb) | |
0d3244d6 | 381 | { |
a616898d | 382 | struct soc_camera_device *icd = container_of(vb->vb2_queue, struct soc_camera_device, vb2_vidq); |
b5518a41 GL |
383 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
384 | struct sh_mobile_ceu_dev *pcdev = ici->priv; | |
385 | struct sh_mobile_ceu_buffer *buf = to_ceu_vb(vb); | |
386 | unsigned long size; | |
760697be | 387 | |
2b61d46e | 388 | size = icd->sizeimage; |
b5518a41 GL |
389 | |
390 | if (vb2_plane_size(vb, 0) < size) { | |
391 | dev_err(icd->parent, "Buffer #%d too small (%lu < %lu)\n", | |
392 | vb->v4l2_buf.index, vb2_plane_size(vb, 0), size); | |
393 | goto error; | |
394 | } | |
395 | ||
396 | vb2_set_plane_payload(vb, 0, size); | |
0d3244d6 | 397 | |
7dfff953 | 398 | dev_dbg(icd->parent, "%s (vb=0x%p) 0x%p %lu\n", __func__, |
a616898d | 399 | vb, vb2_plane_vaddr(vb, 0), vb2_get_plane_payload(vb, 0)); |
0d3244d6 | 400 | |
0d3244d6 | 401 | #ifdef DEBUG |
5d28d525 GL |
402 | /* |
403 | * This can be useful if you want to see if we actually fill | |
404 | * the buffer with something | |
405 | */ | |
a616898d GL |
406 | if (vb2_plane_vaddr(vb, 0)) |
407 | memset(vb2_plane_vaddr(vb, 0), 0xaa, vb2_get_plane_payload(vb, 0)); | |
0d3244d6 MD |
408 | #endif |
409 | ||
3dac322d | 410 | spin_lock_irq(&pcdev->lock); |
a616898d | 411 | list_add_tail(&buf->queue, &pcdev->capture); |
0d3244d6 MD |
412 | |
413 | if (!pcdev->active) { | |
5cf93f1d KM |
414 | /* |
415 | * Because there were no active buffer at this moment, | |
416 | * we are not interested in the return value of | |
417 | * sh_mobile_ceu_capture here. | |
418 | */ | |
0d3244d6 MD |
419 | pcdev->active = vb; |
420 | sh_mobile_ceu_capture(pcdev); | |
421 | } | |
3dac322d | 422 | spin_unlock_irq(&pcdev->lock); |
b5518a41 GL |
423 | |
424 | return; | |
425 | ||
426 | error: | |
427 | vb2_buffer_done(vb, VB2_BUF_STATE_ERROR); | |
0d3244d6 MD |
428 | } |
429 | ||
a616898d | 430 | static void sh_mobile_ceu_videobuf_release(struct vb2_buffer *vb) |
0d3244d6 | 431 | { |
a616898d | 432 | struct soc_camera_device *icd = container_of(vb->vb2_queue, struct soc_camera_device, vb2_vidq); |
7dfff953 | 433 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
a616898d | 434 | struct sh_mobile_ceu_buffer *buf = to_ceu_vb(vb); |
cca0e549 | 435 | struct sh_mobile_ceu_dev *pcdev = ici->priv; |
cca0e549 | 436 | |
3dac322d | 437 | spin_lock_irq(&pcdev->lock); |
cca0e549 GL |
438 | |
439 | if (pcdev->active == vb) { | |
440 | /* disable capture (release DMA buffer), reset */ | |
441 | ceu_write(pcdev, CAPSR, 1 << 16); | |
442 | pcdev->active = NULL; | |
443 | } | |
444 | ||
cb74cf53 GL |
445 | /* |
446 | * Doesn't hurt also if the list is empty, but it hurts, if queuing the | |
447 | * buffer failed, and .buf_init() hasn't been called | |
448 | */ | |
449 | if (buf->queue.next) | |
450 | list_del_init(&buf->queue); | |
cca0e549 | 451 | |
b5518a41 GL |
452 | pcdev->buf_total -= PAGE_ALIGN(vb2_plane_size(vb, 0)); |
453 | dev_dbg(icd->parent, "%s() %zu bytes buffers\n", __func__, | |
454 | pcdev->buf_total); | |
455 | ||
3dac322d | 456 | spin_unlock_irq(&pcdev->lock); |
a616898d | 457 | } |
cca0e549 | 458 | |
a616898d GL |
459 | static int sh_mobile_ceu_videobuf_init(struct vb2_buffer *vb) |
460 | { | |
b5518a41 GL |
461 | struct soc_camera_device *icd = container_of(vb->vb2_queue, struct soc_camera_device, vb2_vidq); |
462 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); | |
463 | struct sh_mobile_ceu_dev *pcdev = ici->priv; | |
464 | ||
465 | pcdev->buf_total += PAGE_ALIGN(vb2_plane_size(vb, 0)); | |
466 | dev_dbg(icd->parent, "%s() %zu bytes buffers\n", __func__, | |
467 | pcdev->buf_total); | |
468 | ||
a616898d GL |
469 | /* This is for locking debugging only */ |
470 | INIT_LIST_HEAD(&to_ceu_vb(vb)->queue); | |
471 | return 0; | |
0d3244d6 MD |
472 | } |
473 | ||
e37559b2 | 474 | static void sh_mobile_ceu_stop_streaming(struct vb2_queue *q) |
066f7867 GL |
475 | { |
476 | struct soc_camera_device *icd = container_of(q, struct soc_camera_device, vb2_vidq); | |
7dfff953 | 477 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
066f7867 GL |
478 | struct sh_mobile_ceu_dev *pcdev = ici->priv; |
479 | struct list_head *buf_head, *tmp; | |
066f7867 | 480 | |
3dac322d | 481 | spin_lock_irq(&pcdev->lock); |
066f7867 GL |
482 | |
483 | pcdev->active = NULL; | |
484 | ||
485 | list_for_each_safe(buf_head, tmp, &pcdev->capture) | |
486 | list_del_init(buf_head); | |
487 | ||
3dac322d | 488 | spin_unlock_irq(&pcdev->lock); |
066f7867 | 489 | |
e37559b2 | 490 | sh_mobile_ceu_soft_reset(pcdev); |
066f7867 GL |
491 | } |
492 | ||
a616898d GL |
493 | static struct vb2_ops sh_mobile_ceu_videobuf_ops = { |
494 | .queue_setup = sh_mobile_ceu_videobuf_setup, | |
495 | .buf_prepare = sh_mobile_ceu_videobuf_prepare, | |
496 | .buf_queue = sh_mobile_ceu_videobuf_queue, | |
497 | .buf_cleanup = sh_mobile_ceu_videobuf_release, | |
498 | .buf_init = sh_mobile_ceu_videobuf_init, | |
499 | .wait_prepare = soc_camera_unlock, | |
500 | .wait_finish = soc_camera_lock, | |
066f7867 | 501 | .stop_streaming = sh_mobile_ceu_stop_streaming, |
0d3244d6 MD |
502 | }; |
503 | ||
504 | static irqreturn_t sh_mobile_ceu_irq(int irq, void *data) | |
505 | { | |
506 | struct sh_mobile_ceu_dev *pcdev = data; | |
a616898d GL |
507 | struct vb2_buffer *vb; |
508 | int ret; | |
0d3244d6 | 509 | |
a616898d | 510 | spin_lock(&pcdev->lock); |
0d3244d6 MD |
511 | |
512 | vb = pcdev->active; | |
cca0e549 GL |
513 | if (!vb) |
514 | /* Stale interrupt from a released buffer */ | |
515 | goto out; | |
516 | ||
a616898d | 517 | list_del_init(&to_ceu_vb(vb)->queue); |
0d3244d6 MD |
518 | |
519 | if (!list_empty(&pcdev->capture)) | |
a616898d GL |
520 | pcdev->active = &list_entry(pcdev->capture.next, |
521 | struct sh_mobile_ceu_buffer, queue)->vb; | |
0d3244d6 MD |
522 | else |
523 | pcdev->active = NULL; | |
524 | ||
a616898d | 525 | ret = sh_mobile_ceu_capture(pcdev); |
8e6057b5 | 526 | v4l2_get_timestamp(&vb->v4l2_buf.timestamp); |
a616898d GL |
527 | if (!ret) { |
528 | vb->v4l2_buf.field = pcdev->field; | |
529 | vb->v4l2_buf.sequence = pcdev->sequence++; | |
530 | } | |
531 | vb2_buffer_done(vb, ret < 0 ? VB2_BUF_STATE_ERROR : VB2_BUF_STATE_DONE); | |
cca0e549 GL |
532 | |
533 | out: | |
a616898d | 534 | spin_unlock(&pcdev->lock); |
0d3244d6 MD |
535 | |
536 | return IRQ_HANDLED; | |
537 | } | |
538 | ||
6b526fed GL |
539 | static struct v4l2_subdev *find_csi2(struct sh_mobile_ceu_dev *pcdev) |
540 | { | |
541 | struct v4l2_subdev *sd; | |
542 | ||
676d2d4f GL |
543 | if (pcdev->csi2_sd) |
544 | return pcdev->csi2_sd; | |
6b526fed | 545 | |
676d2d4f GL |
546 | if (pcdev->csi2_asd) { |
547 | char name[] = "sh-mobile-csi2"; | |
548 | v4l2_device_for_each_subdev(sd, &pcdev->ici.v4l2_dev) | |
549 | if (!strncmp(name, sd->name, sizeof(name) - 1)) { | |
550 | pcdev->csi2_sd = sd; | |
551 | return sd; | |
552 | } | |
553 | } | |
6b526fed GL |
554 | |
555 | return NULL; | |
556 | } | |
557 | ||
676d2d4f GL |
558 | static struct v4l2_subdev *csi2_subdev(struct sh_mobile_ceu_dev *pcdev, |
559 | struct soc_camera_device *icd) | |
560 | { | |
561 | struct v4l2_subdev *sd = pcdev->csi2_sd; | |
562 | ||
563 | return sd && sd->grp_id == soc_camera_grp_id(icd) ? sd : NULL; | |
564 | } | |
565 | ||
0d3244d6 MD |
566 | static int sh_mobile_ceu_add_device(struct soc_camera_device *icd) |
567 | { | |
7dfff953 | 568 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
0d3244d6 | 569 | struct sh_mobile_ceu_dev *pcdev = ici->priv; |
0ff6a6e8 | 570 | struct v4l2_subdev *csi2_sd = find_csi2(pcdev); |
6ed7c038 | 571 | int ret; |
0d3244d6 | 572 | |
4c0b036d GL |
573 | if (csi2_sd) { |
574 | csi2_sd->grp_id = soc_camera_grp_id(icd); | |
575 | v4l2_set_subdev_hostdata(csi2_sd, icd); | |
576 | } | |
6b526fed GL |
577 | |
578 | ret = v4l2_subdev_call(csi2_sd, core, s_power, 1); | |
0ff6a6e8 | 579 | if (ret < 0 && ret != -ENOIOCTLCMD && ret != -ENODEV) |
489759c0 | 580 | return ret; |
979ea1dd | 581 | |
489759c0 GL |
582 | /* |
583 | * -ENODEV is special: either csi2_sd == NULL or the CSI-2 driver | |
584 | * has not found this soc-camera device among its clients | |
585 | */ | |
676d2d4f | 586 | if (csi2_sd && ret == -ENODEV) |
489759c0 | 587 | csi2_sd->grp_id = 0; |
489759c0 | 588 | |
0ff6a6e8 | 589 | dev_info(icd->parent, |
676d2d4f GL |
590 | "SuperH Mobile CEU%s driver attached to camera %d\n", |
591 | csi2_sd && csi2_sd->grp_id ? "/CSI-2" : "", icd->devnum); | |
0ff6a6e8 | 592 | |
489759c0 | 593 | return 0; |
0d3244d6 MD |
594 | } |
595 | ||
596 | static void sh_mobile_ceu_remove_device(struct soc_camera_device *icd) | |
597 | { | |
7dfff953 | 598 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
0d3244d6 | 599 | struct sh_mobile_ceu_dev *pcdev = ici->priv; |
6b526fed | 600 | struct v4l2_subdev *csi2_sd = find_csi2(pcdev); |
0d3244d6 | 601 | |
0ff6a6e8 GL |
602 | dev_info(icd->parent, |
603 | "SuperH Mobile CEU driver detached from camera %d\n", | |
604 | icd->devnum); | |
605 | ||
6b526fed | 606 | v4l2_subdev_call(csi2_sd, core, s_power, 0); |
0ff6a6e8 GL |
607 | } |
608 | ||
609 | /* Called with .host_lock held */ | |
610 | static int sh_mobile_ceu_clock_start(struct soc_camera_host *ici) | |
611 | { | |
612 | struct sh_mobile_ceu_dev *pcdev = ici->priv; | |
0ff6a6e8 GL |
613 | |
614 | pm_runtime_get_sync(ici->v4l2_dev.dev); | |
615 | ||
616 | pcdev->buf_total = 0; | |
617 | ||
e5b6a697 | 618 | sh_mobile_ceu_soft_reset(pcdev); |
0ff6a6e8 GL |
619 | |
620 | return 0; | |
621 | } | |
622 | ||
623 | /* Called with .host_lock held */ | |
624 | static void sh_mobile_ceu_clock_stop(struct soc_camera_host *ici) | |
625 | { | |
626 | struct sh_mobile_ceu_dev *pcdev = ici->priv; | |
627 | ||
0d3244d6 MD |
628 | /* disable capture, disable interrupts */ |
629 | ceu_write(pcdev, CEIER, 0); | |
b1de7aeb | 630 | sh_mobile_ceu_soft_reset(pcdev); |
51354cc3 MD |
631 | |
632 | /* make sure active buffer is canceled */ | |
3dac322d | 633 | spin_lock_irq(&pcdev->lock); |
51354cc3 | 634 | if (pcdev->active) { |
a616898d GL |
635 | list_del_init(&to_ceu_vb(pcdev->active)->queue); |
636 | vb2_buffer_done(pcdev->active, VB2_BUF_STATE_ERROR); | |
51354cc3 MD |
637 | pcdev->active = NULL; |
638 | } | |
3dac322d | 639 | spin_unlock_irq(&pcdev->lock); |
51354cc3 | 640 | |
57f1b1c8 | 641 | pm_runtime_put(ici->v4l2_dev.dev); |
0d3244d6 MD |
642 | } |
643 | ||
961801bb GL |
644 | /* |
645 | * See chapter 29.4.12 "Capture Filter Control Register (CFLCR)" | |
646 | * in SH7722 Hardware Manual | |
647 | */ | |
648 | static unsigned int size_dst(unsigned int src, unsigned int scale) | |
649 | { | |
650 | unsigned int mant_pre = scale >> 12; | |
651 | if (!src || !scale) | |
652 | return src; | |
653 | return ((mant_pre + 2 * (src - 1)) / (2 * mant_pre) - 1) * | |
654 | mant_pre * 4096 / scale + 1; | |
655 | } | |
656 | ||
961801bb GL |
657 | static u16 calc_scale(unsigned int src, unsigned int *dst) |
658 | { | |
659 | u16 scale; | |
660 | ||
661 | if (src == *dst) | |
662 | return 0; | |
663 | ||
664 | scale = (src * 4096 / *dst) & ~7; | |
665 | ||
666 | while (scale > 4096 && size_dst(src, scale) < *dst) | |
667 | scale -= 8; | |
668 | ||
669 | *dst = size_dst(src, scale); | |
670 | ||
671 | return scale; | |
672 | } | |
673 | ||
674 | /* rect is guaranteed to not exceed the scaled camera rectangle */ | |
e622681d | 675 | static void sh_mobile_ceu_set_rect(struct soc_camera_device *icd) |
904078f1 | 676 | { |
7dfff953 | 677 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
904078f1 GL |
678 | struct sh_mobile_ceu_cam *cam = icd->host_priv; |
679 | struct sh_mobile_ceu_dev *pcdev = ici->priv; | |
6a6c8786 GL |
680 | unsigned int height, width, cdwdr_width, in_width, in_height; |
681 | unsigned int left_offset, top_offset; | |
904078f1 GL |
682 | u32 camor; |
683 | ||
7dfff953 | 684 | dev_geo(icd->parent, "Crop %ux%u@%u:%u\n", |
e622681d | 685 | icd->user_width, icd->user_height, cam->ceu_left, cam->ceu_top); |
904078f1 | 686 | |
e622681d GL |
687 | left_offset = cam->ceu_left; |
688 | top_offset = cam->ceu_top; | |
904078f1 | 689 | |
eec5ce01 GL |
690 | WARN_ON(icd->user_width & 3 || icd->user_height & 3); |
691 | ||
692 | width = icd->user_width; | |
693 | ||
904078f1 | 694 | if (pcdev->image_mode) { |
e622681d | 695 | in_width = cam->width; |
961801bb | 696 | if (!pcdev->is_16bit) { |
961801bb GL |
697 | in_width *= 2; |
698 | left_offset *= 2; | |
699 | } | |
904078f1 | 700 | } else { |
760697be | 701 | unsigned int w_factor; |
6a6c8786 | 702 | |
760697be GL |
703 | switch (icd->current_fmt->host_fmt->packing) { |
704 | case SOC_MBUS_PACKING_2X8_PADHI: | |
705 | w_factor = 2; | |
706 | break; | |
707 | default: | |
708 | w_factor = 1; | |
709 | } | |
961801bb | 710 | |
e622681d | 711 | in_width = cam->width * w_factor; |
eec5ce01 | 712 | left_offset *= w_factor; |
904078f1 GL |
713 | } |
714 | ||
fc13baff LP |
715 | cdwdr_width = icd->bytesperline; |
716 | ||
e622681d GL |
717 | height = icd->user_height; |
718 | in_height = cam->height; | |
1edcc10d | 719 | if (V4L2_FIELD_NONE != pcdev->field) { |
eec5ce01 | 720 | height = (height / 2) & ~3; |
961801bb GL |
721 | in_height /= 2; |
722 | top_offset /= 2; | |
904078f1 GL |
723 | cdwdr_width *= 2; |
724 | } | |
725 | ||
b3b5020d | 726 | /* CSI2 special configuration */ |
676d2d4f | 727 | if (csi2_subdev(pcdev, icd)) { |
b3b5020d GL |
728 | in_width = ((in_width - 2) * 2); |
729 | left_offset *= 2; | |
730 | } | |
731 | ||
6a6c8786 | 732 | /* Set CAMOR, CAPWR, CFSZR, take care of CDWDR */ |
904078f1 | 733 | camor = left_offset | (top_offset << 16); |
6a6c8786 | 734 | |
7dfff953 | 735 | dev_geo(icd->parent, |
6a6c8786 GL |
736 | "CAMOR 0x%x, CAPWR 0x%x, CFSZR 0x%x, CDWDR 0x%x\n", camor, |
737 | (in_height << 16) | in_width, (height << 16) | width, | |
738 | cdwdr_width); | |
739 | ||
904078f1 | 740 | ceu_write(pcdev, CAMOR, camor); |
961801bb | 741 | ceu_write(pcdev, CAPWR, (in_height << 16) | in_width); |
eec5ce01 | 742 | /* CFSZR clipping is applied _after_ the scaling filter (CFLCR) */ |
6a6c8786 | 743 | ceu_write(pcdev, CFSZR, (height << 16) | width); |
904078f1 GL |
744 | ceu_write(pcdev, CDWDR, cdwdr_width); |
745 | } | |
746 | ||
747 | static u32 capture_save_reset(struct sh_mobile_ceu_dev *pcdev) | |
748 | { | |
749 | u32 capsr = ceu_read(pcdev, CAPSR); | |
750 | ceu_write(pcdev, CAPSR, 1 << 16); /* reset, stop capture */ | |
751 | return capsr; | |
752 | } | |
753 | ||
754 | static void capture_restore(struct sh_mobile_ceu_dev *pcdev, u32 capsr) | |
755 | { | |
756 | unsigned long timeout = jiffies + 10 * HZ; | |
757 | ||
758 | /* | |
759 | * Wait until the end of the current frame. It can take a long time, | |
760 | * but if it has been aborted by a CAPSR reset, it shoule exit sooner. | |
761 | */ | |
762 | while ((ceu_read(pcdev, CSTSR) & 1) && time_before(jiffies, timeout)) | |
763 | msleep(1); | |
764 | ||
765 | if (time_after(jiffies, timeout)) { | |
766 | dev_err(pcdev->ici.v4l2_dev.dev, | |
767 | "Timeout waiting for frame end! Interface problem?\n"); | |
768 | return; | |
769 | } | |
770 | ||
771 | /* Wait until reset clears, this shall not hang... */ | |
772 | while (ceu_read(pcdev, CAPSR) & (1 << 16)) | |
773 | udelay(10); | |
774 | ||
775 | /* Anything to restore? */ | |
776 | if (capsr & ~(1 << 16)) | |
777 | ceu_write(pcdev, CAPSR, capsr); | |
778 | } | |
779 | ||
e1db7043 GL |
780 | /* Find the bus subdevice driver, e.g., CSI2 */ |
781 | static struct v4l2_subdev *find_bus_subdev(struct sh_mobile_ceu_dev *pcdev, | |
782 | struct soc_camera_device *icd) | |
783 | { | |
676d2d4f | 784 | return csi2_subdev(pcdev, icd) ? : soc_camera_to_subdev(icd); |
e1db7043 GL |
785 | } |
786 | ||
787 | #define CEU_BUS_FLAGS (V4L2_MBUS_MASTER | \ | |
788 | V4L2_MBUS_PCLK_SAMPLE_RISING | \ | |
789 | V4L2_MBUS_HSYNC_ACTIVE_HIGH | \ | |
790 | V4L2_MBUS_HSYNC_ACTIVE_LOW | \ | |
791 | V4L2_MBUS_VSYNC_ACTIVE_HIGH | \ | |
792 | V4L2_MBUS_VSYNC_ACTIVE_LOW | \ | |
793 | V4L2_MBUS_DATA_ACTIVE_HIGH) | |
794 | ||
a616898d | 795 | /* Capture is not running, no interrupts, no locking needed */ |
8843d119 | 796 | static int sh_mobile_ceu_set_bus_param(struct soc_camera_device *icd) |
0d3244d6 | 797 | { |
7dfff953 | 798 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
0d3244d6 | 799 | struct sh_mobile_ceu_dev *pcdev = ici->priv; |
e1db7043 | 800 | struct v4l2_subdev *sd = find_bus_subdev(pcdev, icd); |
904078f1 | 801 | struct sh_mobile_ceu_cam *cam = icd->host_priv; |
e1db7043 GL |
802 | struct v4l2_mbus_config cfg = {.type = V4L2_MBUS_PARALLEL,}; |
803 | unsigned long value, common_flags = CEU_BUS_FLAGS; | |
904078f1 | 804 | u32 capsr = capture_save_reset(pcdev); |
e1db7043 GL |
805 | unsigned int yuv_lineskip; |
806 | int ret; | |
0d3244d6 | 807 | |
e1db7043 GL |
808 | /* |
809 | * If the client doesn't implement g_mbus_config, we just use our | |
810 | * platform data | |
811 | */ | |
812 | ret = v4l2_subdev_call(sd, video, g_mbus_config, &cfg); | |
813 | if (!ret) { | |
814 | common_flags = soc_mbus_config_compatible(&cfg, | |
815 | common_flags); | |
816 | if (!common_flags) | |
817 | return -EINVAL; | |
818 | } else if (ret != -ENOIOCTLCMD) { | |
819 | return ret; | |
820 | } | |
0d3244d6 | 821 | |
85dc1cff | 822 | /* Make choises, based on platform preferences */ |
e1db7043 GL |
823 | if ((common_flags & V4L2_MBUS_HSYNC_ACTIVE_HIGH) && |
824 | (common_flags & V4L2_MBUS_HSYNC_ACTIVE_LOW)) { | |
f146e4e7 | 825 | if (pcdev->flags & SH_CEU_FLAG_HSYNC_LOW) |
e1db7043 | 826 | common_flags &= ~V4L2_MBUS_HSYNC_ACTIVE_HIGH; |
85dc1cff | 827 | else |
e1db7043 | 828 | common_flags &= ~V4L2_MBUS_HSYNC_ACTIVE_LOW; |
85dc1cff KM |
829 | } |
830 | ||
e1db7043 GL |
831 | if ((common_flags & V4L2_MBUS_VSYNC_ACTIVE_HIGH) && |
832 | (common_flags & V4L2_MBUS_VSYNC_ACTIVE_LOW)) { | |
f146e4e7 | 833 | if (pcdev->flags & SH_CEU_FLAG_VSYNC_LOW) |
e1db7043 | 834 | common_flags &= ~V4L2_MBUS_VSYNC_ACTIVE_HIGH; |
85dc1cff | 835 | else |
e1db7043 | 836 | common_flags &= ~V4L2_MBUS_VSYNC_ACTIVE_LOW; |
85dc1cff KM |
837 | } |
838 | ||
e1db7043 GL |
839 | cfg.flags = common_flags; |
840 | ret = v4l2_subdev_call(sd, video, s_mbus_config, &cfg); | |
841 | if (ret < 0 && ret != -ENOIOCTLCMD) | |
0d3244d6 MD |
842 | return ret; |
843 | ||
e1db7043 | 844 | if (icd->current_fmt->host_fmt->bits_per_sample > 8) |
904078f1 | 845 | pcdev->is_16bit = 1; |
e1db7043 GL |
846 | else |
847 | pcdev->is_16bit = 0; | |
0d3244d6 MD |
848 | |
849 | ceu_write(pcdev, CRCNTR, 0); | |
850 | ceu_write(pcdev, CRCMPR, 0); | |
851 | ||
8be65dc5 | 852 | value = 0x00000010; /* data fetch by default */ |
e1db7043 | 853 | yuv_lineskip = 0x10; |
8be65dc5 | 854 | |
760697be | 855 | switch (icd->current_fmt->host_fmt->fourcc) { |
8be65dc5 MD |
856 | case V4L2_PIX_FMT_NV12: |
857 | case V4L2_PIX_FMT_NV21: | |
e1db7043 GL |
858 | /* convert 4:2:2 -> 4:2:0 */ |
859 | yuv_lineskip = 0; /* skip for NV12/21, no skip for NV16/61 */ | |
9e4a56d2 MD |
860 | /* fall-through */ |
861 | case V4L2_PIX_FMT_NV16: | |
862 | case V4L2_PIX_FMT_NV61: | |
760697be | 863 | switch (cam->code) { |
27ffaeb0 | 864 | case MEDIA_BUS_FMT_UYVY8_2X8: |
8be65dc5 MD |
865 | value = 0x00000000; /* Cb0, Y0, Cr0, Y1 */ |
866 | break; | |
27ffaeb0 | 867 | case MEDIA_BUS_FMT_VYUY8_2X8: |
8be65dc5 MD |
868 | value = 0x00000100; /* Cr0, Y0, Cb0, Y1 */ |
869 | break; | |
27ffaeb0 | 870 | case MEDIA_BUS_FMT_YUYV8_2X8: |
8be65dc5 MD |
871 | value = 0x00000200; /* Y0, Cb0, Y1, Cr0 */ |
872 | break; | |
27ffaeb0 | 873 | case MEDIA_BUS_FMT_YVYU8_2X8: |
8be65dc5 MD |
874 | value = 0x00000300; /* Y0, Cr0, Y1, Cb0 */ |
875 | break; | |
876 | default: | |
877 | BUG(); | |
878 | } | |
879 | } | |
880 | ||
760697be GL |
881 | if (icd->current_fmt->host_fmt->fourcc == V4L2_PIX_FMT_NV21 || |
882 | icd->current_fmt->host_fmt->fourcc == V4L2_PIX_FMT_NV61) | |
9e4a56d2 | 883 | value ^= 0x00000100; /* swap U, V to change from NV1x->NVx1 */ |
8be65dc5 | 884 | |
e1db7043 GL |
885 | value |= common_flags & V4L2_MBUS_VSYNC_ACTIVE_LOW ? 1 << 1 : 0; |
886 | value |= common_flags & V4L2_MBUS_HSYNC_ACTIVE_LOW ? 1 << 0 : 0; | |
b3b5020d | 887 | |
676d2d4f | 888 | if (csi2_subdev(pcdev, icd)) /* CSI2 mode */ |
b3b5020d | 889 | value |= 3 << 12; |
2564f67b KM |
890 | else if (pcdev->is_16bit) |
891 | value |= 1 << 12; | |
f146e4e7 | 892 | else if (pcdev->flags & SH_CEU_FLAG_LOWER_8BIT) |
2564f67b | 893 | value |= 2 << 12; |
b3b5020d | 894 | |
0d3244d6 MD |
895 | ceu_write(pcdev, CAMCR, value); |
896 | ||
897 | ceu_write(pcdev, CAPCR, 0x00300000); | |
1edcc10d KM |
898 | |
899 | switch (pcdev->field) { | |
900 | case V4L2_FIELD_INTERLACED_TB: | |
901 | value = 0x101; | |
902 | break; | |
903 | case V4L2_FIELD_INTERLACED_BT: | |
904 | value = 0x102; | |
905 | break; | |
906 | default: | |
907 | value = 0; | |
908 | break; | |
909 | } | |
910 | ceu_write(pcdev, CAIFR, value); | |
0d3244d6 | 911 | |
e622681d | 912 | sh_mobile_ceu_set_rect(icd); |
0d3244d6 MD |
913 | mdelay(1); |
914 | ||
7dfff953 | 915 | dev_geo(icd->parent, "CFLCR 0x%x\n", pcdev->cflcr); |
961801bb | 916 | ceu_write(pcdev, CFLCR, pcdev->cflcr); |
dd54203b | 917 | |
5d28d525 GL |
918 | /* |
919 | * A few words about byte order (observed in Big Endian mode) | |
dd54203b MD |
920 | * |
921 | * In data fetch mode bytes are received in chunks of 8 bytes. | |
922 | * D0, D1, D2, D3, D4, D5, D6, D7 (D0 received first) | |
923 | * | |
924 | * The data is however by default written to memory in reverse order: | |
925 | * D7, D6, D5, D4, D3, D2, D1, D0 (D7 written to lowest byte) | |
926 | * | |
927 | * The lowest three bits of CDOCR allows us to do swapping, | |
2c0a072e MD |
928 | * using 7 we swap the data bytes to match the incoming order: |
929 | * D0, D1, D2, D3, D4, D5, D6, D7 | |
dd54203b | 930 | */ |
e1db7043 | 931 | value = 0x00000007 | yuv_lineskip; |
8be65dc5 MD |
932 | |
933 | ceu_write(pcdev, CDOCR, value); | |
0d3244d6 MD |
934 | ceu_write(pcdev, CFWCR, 0); /* keep "datafetch firewall" disabled */ |
935 | ||
904078f1 GL |
936 | capture_restore(pcdev, capsr); |
937 | ||
0d3244d6 | 938 | /* not in bundle mode: skip CBDSR, CDAYR2, CDACR2, CDBYR2, CDBCR2 */ |
0d3244d6 MD |
939 | return 0; |
940 | } | |
941 | ||
760697be GL |
942 | static int sh_mobile_ceu_try_bus_param(struct soc_camera_device *icd, |
943 | unsigned char buswidth) | |
0d3244d6 | 944 | { |
7dfff953 | 945 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
0d3244d6 | 946 | struct sh_mobile_ceu_dev *pcdev = ici->priv; |
e1db7043 GL |
947 | struct v4l2_subdev *sd = find_bus_subdev(pcdev, icd); |
948 | unsigned long common_flags = CEU_BUS_FLAGS; | |
949 | struct v4l2_mbus_config cfg = {.type = V4L2_MBUS_PARALLEL,}; | |
950 | int ret; | |
0d3244d6 | 951 | |
e1db7043 GL |
952 | ret = v4l2_subdev_call(sd, video, g_mbus_config, &cfg); |
953 | if (!ret) | |
954 | common_flags = soc_mbus_config_compatible(&cfg, | |
955 | common_flags); | |
956 | else if (ret != -ENOIOCTLCMD) | |
957 | return ret; | |
958 | ||
959 | if (!common_flags || buswidth > 16) | |
0d3244d6 MD |
960 | return -EINVAL; |
961 | ||
962 | return 0; | |
963 | } | |
964 | ||
760697be | 965 | static const struct soc_mbus_pixelfmt sh_mobile_ceu_formats[] = { |
9e4a56d2 | 966 | { |
760697be GL |
967 | .fourcc = V4L2_PIX_FMT_NV12, |
968 | .name = "NV12", | |
e1db7043 GL |
969 | .bits_per_sample = 8, |
970 | .packing = SOC_MBUS_PACKING_1_5X8, | |
760697be | 971 | .order = SOC_MBUS_ORDER_LE, |
ad3b81fa | 972 | .layout = SOC_MBUS_LAYOUT_PLANAR_2Y_C, |
760697be GL |
973 | }, { |
974 | .fourcc = V4L2_PIX_FMT_NV21, | |
975 | .name = "NV21", | |
e1db7043 GL |
976 | .bits_per_sample = 8, |
977 | .packing = SOC_MBUS_PACKING_1_5X8, | |
760697be | 978 | .order = SOC_MBUS_ORDER_LE, |
ad3b81fa | 979 | .layout = SOC_MBUS_LAYOUT_PLANAR_2Y_C, |
760697be GL |
980 | }, { |
981 | .fourcc = V4L2_PIX_FMT_NV16, | |
982 | .name = "NV16", | |
e1db7043 GL |
983 | .bits_per_sample = 8, |
984 | .packing = SOC_MBUS_PACKING_2X8_PADHI, | |
760697be | 985 | .order = SOC_MBUS_ORDER_LE, |
ad3b81fa | 986 | .layout = SOC_MBUS_LAYOUT_PLANAR_Y_C, |
760697be GL |
987 | }, { |
988 | .fourcc = V4L2_PIX_FMT_NV61, | |
989 | .name = "NV61", | |
e1db7043 GL |
990 | .bits_per_sample = 8, |
991 | .packing = SOC_MBUS_PACKING_2X8_PADHI, | |
760697be | 992 | .order = SOC_MBUS_ORDER_LE, |
ad3b81fa | 993 | .layout = SOC_MBUS_LAYOUT_PLANAR_Y_C, |
9e4a56d2 | 994 | }, |
8be65dc5 MD |
995 | }; |
996 | ||
760697be GL |
997 | /* This will be corrected as we get more formats */ |
998 | static bool sh_mobile_ceu_packing_supported(const struct soc_mbus_pixelfmt *fmt) | |
999 | { | |
1000 | return fmt->packing == SOC_MBUS_PACKING_NONE || | |
e1db7043 GL |
1001 | (fmt->bits_per_sample == 8 && |
1002 | fmt->packing == SOC_MBUS_PACKING_1_5X8) || | |
760697be GL |
1003 | (fmt->bits_per_sample == 8 && |
1004 | fmt->packing == SOC_MBUS_PACKING_2X8_PADHI) || | |
1005 | (fmt->bits_per_sample > 8 && | |
1006 | fmt->packing == SOC_MBUS_PACKING_EXTEND16); | |
1007 | } | |
1008 | ||
d34bfcd2 HV |
1009 | static struct soc_camera_device *ctrl_to_icd(struct v4l2_ctrl *ctrl) |
1010 | { | |
1011 | return container_of(ctrl->handler, struct soc_camera_device, | |
1012 | ctrl_handler); | |
1013 | } | |
1014 | ||
1015 | static int sh_mobile_ceu_s_ctrl(struct v4l2_ctrl *ctrl) | |
1016 | { | |
1017 | struct soc_camera_device *icd = ctrl_to_icd(ctrl); | |
1018 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); | |
1019 | struct sh_mobile_ceu_dev *pcdev = ici->priv; | |
1020 | ||
1021 | switch (ctrl->id) { | |
1022 | case V4L2_CID_SHARPNESS: | |
1023 | switch (icd->current_fmt->host_fmt->fourcc) { | |
1024 | case V4L2_PIX_FMT_NV12: | |
1025 | case V4L2_PIX_FMT_NV21: | |
1026 | case V4L2_PIX_FMT_NV16: | |
1027 | case V4L2_PIX_FMT_NV61: | |
1028 | ceu_write(pcdev, CLFCR, !ctrl->val); | |
1029 | return 0; | |
1030 | } | |
1031 | break; | |
1032 | } | |
1033 | ||
1034 | return -EINVAL; | |
1035 | } | |
1036 | ||
1037 | static const struct v4l2_ctrl_ops sh_mobile_ceu_ctrl_ops = { | |
1038 | .s_ctrl = sh_mobile_ceu_s_ctrl, | |
1039 | }; | |
1040 | ||
3805f201 | 1041 | static int sh_mobile_ceu_get_formats(struct soc_camera_device *icd, unsigned int idx, |
9414de39 MD |
1042 | struct soc_camera_format_xlate *xlate) |
1043 | { | |
760697be | 1044 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
7dfff953 | 1045 | struct device *dev = icd->parent; |
b3b5020d GL |
1046 | struct soc_camera_host *ici = to_soc_camera_host(dev); |
1047 | struct sh_mobile_ceu_dev *pcdev = ici->priv; | |
8be65dc5 | 1048 | int ret, k, n; |
9414de39 | 1049 | int formats = 0; |
904078f1 | 1050 | struct sh_mobile_ceu_cam *cam; |
27ffaeb0 | 1051 | u32 code; |
760697be | 1052 | const struct soc_mbus_pixelfmt *fmt; |
9414de39 | 1053 | |
760697be GL |
1054 | ret = v4l2_subdev_call(sd, video, enum_mbus_fmt, idx, &code); |
1055 | if (ret < 0) | |
1056 | /* No more formats */ | |
1057 | return 0; | |
1058 | ||
1059 | fmt = soc_mbus_get_fmtdesc(code); | |
1060 | if (!fmt) { | |
d2dcad49 GL |
1061 | dev_warn(dev, "unsupported format code #%u: %d\n", idx, code); |
1062 | return 0; | |
760697be GL |
1063 | } |
1064 | ||
676d2d4f | 1065 | if (!csi2_subdev(pcdev, icd)) { |
e1db7043 | 1066 | /* Are there any restrictions in the CSI-2 case? */ |
b3b5020d GL |
1067 | ret = sh_mobile_ceu_try_bus_param(icd, fmt->bits_per_sample); |
1068 | if (ret < 0) | |
1069 | return 0; | |
1070 | } | |
9414de39 | 1071 | |
904078f1 | 1072 | if (!icd->host_priv) { |
e622681d GL |
1073 | struct v4l2_mbus_framefmt mf; |
1074 | struct v4l2_rect rect; | |
e622681d GL |
1075 | int shift = 0; |
1076 | ||
d34bfcd2 HV |
1077 | /* Add our control */ |
1078 | v4l2_ctrl_new_std(&icd->ctrl_handler, &sh_mobile_ceu_ctrl_ops, | |
d6646b80 | 1079 | V4L2_CID_SHARPNESS, 0, 1, 1, 1); |
d34bfcd2 HV |
1080 | if (icd->ctrl_handler.error) |
1081 | return icd->ctrl_handler.error; | |
1082 | ||
e622681d GL |
1083 | /* FIXME: subwindow is lost between close / open */ |
1084 | ||
1085 | /* Cache current client geometry */ | |
eca430c8 | 1086 | ret = soc_camera_client_g_rect(sd, &rect); |
e622681d GL |
1087 | if (ret < 0) |
1088 | return ret; | |
1089 | ||
1090 | /* First time */ | |
1091 | ret = v4l2_subdev_call(sd, video, g_mbus_fmt, &mf); | |
1092 | if (ret < 0) | |
1093 | return ret; | |
1094 | ||
48e971cd GL |
1095 | /* |
1096 | * All currently existing CEU implementations support 2560x1920 | |
1097 | * or larger frames. If the sensor is proposing too big a frame, | |
1098 | * don't bother with possibly supportred by the CEU larger | |
1099 | * sizes, just try VGA multiples. If needed, this can be | |
1100 | * adjusted in the future. | |
1101 | */ | |
1102 | while ((mf.width > pcdev->max_width || | |
1103 | mf.height > pcdev->max_height) && shift < 4) { | |
e622681d GL |
1104 | /* Try 2560x1920, 1280x960, 640x480, 320x240 */ |
1105 | mf.width = 2560 >> shift; | |
1106 | mf.height = 1920 >> shift; | |
4c0b036d GL |
1107 | ret = v4l2_device_call_until_err(sd->v4l2_dev, |
1108 | soc_camera_grp_id(icd), video, | |
1109 | s_mbus_fmt, &mf); | |
e622681d GL |
1110 | if (ret < 0) |
1111 | return ret; | |
1112 | shift++; | |
1113 | } | |
1114 | ||
1115 | if (shift == 4) { | |
1116 | dev_err(dev, "Failed to configure the client below %ux%x\n", | |
1117 | mf.width, mf.height); | |
1118 | return -EIO; | |
1119 | } | |
1120 | ||
1121 | dev_geo(dev, "camera fmt %ux%u\n", mf.width, mf.height); | |
1122 | ||
904078f1 GL |
1123 | cam = kzalloc(sizeof(*cam), GFP_KERNEL); |
1124 | if (!cam) | |
1125 | return -ENOMEM; | |
1126 | ||
e622681d GL |
1127 | /* We are called with current camera crop, initialise subrect with it */ |
1128 | cam->rect = rect; | |
1129 | cam->subrect = rect; | |
1130 | ||
1131 | cam->width = mf.width; | |
1132 | cam->height = mf.height; | |
1133 | ||
904078f1 GL |
1134 | icd->host_priv = cam; |
1135 | } else { | |
1136 | cam = icd->host_priv; | |
1137 | } | |
1138 | ||
c8329acc GL |
1139 | /* Beginning of a pass */ |
1140 | if (!idx) | |
904078f1 | 1141 | cam->extra_fmt = NULL; |
c8329acc | 1142 | |
760697be | 1143 | switch (code) { |
27ffaeb0 BB |
1144 | case MEDIA_BUS_FMT_UYVY8_2X8: |
1145 | case MEDIA_BUS_FMT_VYUY8_2X8: | |
1146 | case MEDIA_BUS_FMT_YUYV8_2X8: | |
1147 | case MEDIA_BUS_FMT_YVYU8_2X8: | |
904078f1 | 1148 | if (cam->extra_fmt) |
760697be | 1149 | break; |
c8329acc GL |
1150 | |
1151 | /* | |
1152 | * Our case is simple so far: for any of the above four camera | |
1153 | * formats we add all our four synthesized NV* formats, so, | |
1154 | * just marking the device with a single flag suffices. If | |
1155 | * the format generation rules are more complex, you would have | |
1156 | * to actually hang your already added / counted formats onto | |
1157 | * the host_priv pointer and check whether the format you're | |
1158 | * going to add now is already there. | |
1159 | */ | |
760697be | 1160 | cam->extra_fmt = sh_mobile_ceu_formats; |
c8329acc | 1161 | |
8be65dc5 MD |
1162 | n = ARRAY_SIZE(sh_mobile_ceu_formats); |
1163 | formats += n; | |
1164 | for (k = 0; xlate && k < n; k++) { | |
760697be GL |
1165 | xlate->host_fmt = &sh_mobile_ceu_formats[k]; |
1166 | xlate->code = code; | |
8be65dc5 | 1167 | xlate++; |
760697be GL |
1168 | dev_dbg(dev, "Providing format %s using code %d\n", |
1169 | sh_mobile_ceu_formats[k].name, code); | |
8be65dc5 | 1170 | } |
760697be | 1171 | break; |
9414de39 | 1172 | default: |
760697be GL |
1173 | if (!sh_mobile_ceu_packing_supported(fmt)) |
1174 | return 0; | |
1175 | } | |
1176 | ||
1177 | /* Generic pass-through */ | |
1178 | formats++; | |
1179 | if (xlate) { | |
1180 | xlate->host_fmt = fmt; | |
1181 | xlate->code = code; | |
1182 | xlate++; | |
1183 | dev_dbg(dev, "Providing format %s in pass-through mode\n", | |
e53a4805 | 1184 | fmt->name); |
9414de39 MD |
1185 | } |
1186 | ||
1187 | return formats; | |
1188 | } | |
1189 | ||
904078f1 GL |
1190 | static void sh_mobile_ceu_put_formats(struct soc_camera_device *icd) |
1191 | { | |
1192 | kfree(icd->host_priv); | |
1193 | icd->host_priv = NULL; | |
1194 | } | |
1195 | ||
eca430c8 | 1196 | #define scale_down(size, scale) soc_camera_shift_scale(size, 12, scale) |
22e0099a | 1197 | #define calc_generic_scale(in, out) soc_camera_calc_scale(in, 12, out) |
6a6c8786 GL |
1198 | |
1199 | /* | |
1200 | * CEU can scale and crop, but we don't want to waste bandwidth and kill the | |
1201 | * framerate by always requesting the maximum image from the client. See | |
3dac322d | 1202 | * Documentation/video4linux/sh_mobile_ceu_camera.txt for a description of |
6a6c8786 GL |
1203 | * scaling and cropping algorithms and for the meaning of referenced here steps. |
1204 | */ | |
1205 | static int sh_mobile_ceu_set_crop(struct soc_camera_device *icd, | |
4f996594 | 1206 | const struct v4l2_crop *a) |
6a6c8786 | 1207 | { |
3ecb091e GL |
1208 | struct v4l2_crop a_writable = *a; |
1209 | const struct v4l2_rect *rect = &a_writable.c; | |
7dfff953 GL |
1210 | struct device *dev = icd->parent; |
1211 | struct soc_camera_host *ici = to_soc_camera_host(dev); | |
6a6c8786 GL |
1212 | struct sh_mobile_ceu_dev *pcdev = ici->priv; |
1213 | struct v4l2_crop cam_crop; | |
1214 | struct sh_mobile_ceu_cam *cam = icd->host_priv; | |
e622681d | 1215 | struct v4l2_rect *cam_rect = &cam_crop.c; |
6a6c8786 | 1216 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
760697be | 1217 | struct v4l2_mbus_framefmt mf; |
e622681d | 1218 | unsigned int scale_cam_h, scale_cam_v, scale_ceu_h, scale_ceu_v, |
787d0f9d | 1219 | out_width, out_height; |
e622681d | 1220 | int interm_width, interm_height; |
6a6c8786 GL |
1221 | u32 capsr, cflcr; |
1222 | int ret; | |
1223 | ||
e622681d GL |
1224 | dev_geo(dev, "S_CROP(%ux%u@%u:%u)\n", rect->width, rect->height, |
1225 | rect->left, rect->top); | |
6a6c8786 | 1226 | |
e622681d GL |
1227 | /* During camera cropping its output window can change too, stop CEU */ |
1228 | capsr = capture_save_reset(pcdev); | |
1229 | dev_dbg(dev, "CAPSR 0x%x, CFLCR 0x%x\n", capsr, pcdev->cflcr); | |
6a6c8786 | 1230 | |
eec5ce01 GL |
1231 | /* |
1232 | * 1. - 2. Apply iterative camera S_CROP for new input window, read back | |
1233 | * actual camera rectangle. | |
1234 | */ | |
eca430c8 GL |
1235 | ret = soc_camera_client_s_crop(sd, &a_writable, &cam_crop, |
1236 | &cam->rect, &cam->subrect); | |
6a6c8786 GL |
1237 | if (ret < 0) |
1238 | return ret; | |
1239 | ||
e622681d | 1240 | dev_geo(dev, "1-2: camera cropped to %ux%u@%u:%u\n", |
6a6c8786 GL |
1241 | cam_rect->width, cam_rect->height, |
1242 | cam_rect->left, cam_rect->top); | |
1243 | ||
1244 | /* On success cam_crop contains current camera crop */ | |
1245 | ||
e622681d GL |
1246 | /* 3. Retrieve camera output window */ |
1247 | ret = v4l2_subdev_call(sd, video, g_mbus_fmt, &mf); | |
1248 | if (ret < 0) | |
1249 | return ret; | |
6a6c8786 | 1250 | |
48e971cd | 1251 | if (mf.width > pcdev->max_width || mf.height > pcdev->max_height) |
e622681d | 1252 | return -EINVAL; |
6a6c8786 | 1253 | |
e622681d GL |
1254 | /* 4. Calculate camera scales */ |
1255 | scale_cam_h = calc_generic_scale(cam_rect->width, mf.width); | |
1256 | scale_cam_v = calc_generic_scale(cam_rect->height, mf.height); | |
6a6c8786 | 1257 | |
e622681d GL |
1258 | /* Calculate intermediate window */ |
1259 | interm_width = scale_down(rect->width, scale_cam_h); | |
1260 | interm_height = scale_down(rect->height, scale_cam_v); | |
6a6c8786 | 1261 | |
3dac322d GL |
1262 | if (interm_width < icd->user_width) { |
1263 | u32 new_scale_h; | |
1264 | ||
1265 | new_scale_h = calc_generic_scale(rect->width, icd->user_width); | |
1266 | ||
1267 | mf.width = scale_down(cam_rect->width, new_scale_h); | |
1268 | } | |
1269 | ||
1270 | if (interm_height < icd->user_height) { | |
1271 | u32 new_scale_v; | |
1272 | ||
1273 | new_scale_v = calc_generic_scale(rect->height, icd->user_height); | |
1274 | ||
1275 | mf.height = scale_down(cam_rect->height, new_scale_v); | |
1276 | } | |
1277 | ||
1278 | if (interm_width < icd->user_width || interm_height < icd->user_height) { | |
4c0b036d GL |
1279 | ret = v4l2_device_call_until_err(sd->v4l2_dev, |
1280 | soc_camera_grp_id(icd), video, | |
1281 | s_mbus_fmt, &mf); | |
3dac322d GL |
1282 | if (ret < 0) |
1283 | return ret; | |
1284 | ||
1285 | dev_geo(dev, "New camera output %ux%u\n", mf.width, mf.height); | |
1286 | scale_cam_h = calc_generic_scale(cam_rect->width, mf.width); | |
1287 | scale_cam_v = calc_generic_scale(cam_rect->height, mf.height); | |
1288 | interm_width = scale_down(rect->width, scale_cam_h); | |
1289 | interm_height = scale_down(rect->height, scale_cam_v); | |
1290 | } | |
1291 | ||
1292 | /* Cache camera output window */ | |
1293 | cam->width = mf.width; | |
1294 | cam->height = mf.height; | |
1295 | ||
e622681d GL |
1296 | if (pcdev->image_mode) { |
1297 | out_width = min(interm_width, icd->user_width); | |
1298 | out_height = min(interm_height, icd->user_height); | |
1299 | } else { | |
1300 | out_width = interm_width; | |
1301 | out_height = interm_height; | |
1302 | } | |
6a6c8786 GL |
1303 | |
1304 | /* | |
e622681d GL |
1305 | * 5. Calculate CEU scales from camera scales from results of (5) and |
1306 | * the user window | |
6a6c8786 | 1307 | */ |
e622681d GL |
1308 | scale_ceu_h = calc_scale(interm_width, &out_width); |
1309 | scale_ceu_v = calc_scale(interm_height, &out_height); | |
6a6c8786 | 1310 | |
e622681d GL |
1311 | dev_geo(dev, "5: CEU scales %u:%u\n", scale_ceu_h, scale_ceu_v); |
1312 | ||
1313 | /* Apply CEU scales. */ | |
6a6c8786 GL |
1314 | cflcr = scale_ceu_h | (scale_ceu_v << 16); |
1315 | if (cflcr != pcdev->cflcr) { | |
1316 | pcdev->cflcr = cflcr; | |
1317 | ceu_write(pcdev, CFLCR, cflcr); | |
1318 | } | |
1319 | ||
eec5ce01 GL |
1320 | icd->user_width = out_width & ~3; |
1321 | icd->user_height = out_height & ~3; | |
1322 | /* Offsets are applied at the CEU scaling filter input */ | |
787d0f9d GL |
1323 | cam->ceu_left = scale_down(rect->left - cam_rect->left, scale_cam_h) & ~1; |
1324 | cam->ceu_top = scale_down(rect->top - cam_rect->top, scale_cam_v) & ~1; | |
e622681d GL |
1325 | |
1326 | /* 6. Use CEU cropping to crop to the new window. */ | |
1327 | sh_mobile_ceu_set_rect(icd); | |
1328 | ||
1329 | cam->subrect = *rect; | |
1330 | ||
1331 | dev_geo(dev, "6: CEU cropped to %ux%u@%u:%u\n", | |
1332 | icd->user_width, icd->user_height, | |
1333 | cam->ceu_left, cam->ceu_top); | |
1334 | ||
787d0f9d | 1335 | /* Restore capture. The CE bit can be cleared by the hardware */ |
904078f1 GL |
1336 | if (pcdev->active) |
1337 | capsr |= 1; | |
904078f1 GL |
1338 | capture_restore(pcdev, capsr); |
1339 | ||
904078f1 GL |
1340 | /* Even if only camera cropping succeeded */ |
1341 | return ret; | |
09e231b3 GL |
1342 | } |
1343 | ||
e622681d GL |
1344 | static int sh_mobile_ceu_get_crop(struct soc_camera_device *icd, |
1345 | struct v4l2_crop *a) | |
1346 | { | |
1347 | struct sh_mobile_ceu_cam *cam = icd->host_priv; | |
1348 | ||
1349 | a->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; | |
1350 | a->c = cam->subrect; | |
1351 | ||
1352 | return 0; | |
1353 | } | |
1354 | ||
961801bb | 1355 | /* Similar to set_crop multistage iterative algorithm */ |
d8fac217 | 1356 | static int sh_mobile_ceu_set_fmt(struct soc_camera_device *icd, |
09e231b3 | 1357 | struct v4l2_format *f) |
0d3244d6 | 1358 | { |
7dfff953 GL |
1359 | struct device *dev = icd->parent; |
1360 | struct soc_camera_host *ici = to_soc_camera_host(dev); | |
961801bb | 1361 | struct sh_mobile_ceu_dev *pcdev = ici->priv; |
904078f1 GL |
1362 | struct sh_mobile_ceu_cam *cam = icd->host_priv; |
1363 | struct v4l2_pix_format *pix = &f->fmt.pix; | |
760697be | 1364 | struct v4l2_mbus_framefmt mf; |
904078f1 | 1365 | __u32 pixfmt = pix->pixelformat; |
9414de39 | 1366 | const struct soc_camera_format_xlate *xlate; |
eca430c8 GL |
1367 | unsigned int ceu_sub_width = pcdev->max_width, |
1368 | ceu_sub_height = pcdev->max_height; | |
6a6c8786 GL |
1369 | u16 scale_v, scale_h; |
1370 | int ret; | |
1edcc10d KM |
1371 | bool image_mode; |
1372 | enum v4l2_field field; | |
961801bb GL |
1373 | |
1374 | switch (pix->field) { | |
961801bb GL |
1375 | default: |
1376 | pix->field = V4L2_FIELD_NONE; | |
1377 | /* fall-through */ | |
1edcc10d KM |
1378 | case V4L2_FIELD_INTERLACED_TB: |
1379 | case V4L2_FIELD_INTERLACED_BT: | |
961801bb | 1380 | case V4L2_FIELD_NONE: |
1edcc10d KM |
1381 | field = pix->field; |
1382 | break; | |
1383 | case V4L2_FIELD_INTERLACED: | |
1384 | field = V4L2_FIELD_INTERLACED_TB; | |
961801bb GL |
1385 | break; |
1386 | } | |
25c4d74e | 1387 | |
9414de39 MD |
1388 | xlate = soc_camera_xlate_by_fourcc(icd, pixfmt); |
1389 | if (!xlate) { | |
6a6c8786 | 1390 | dev_warn(dev, "Format %x not found\n", pixfmt); |
9414de39 | 1391 | return -EINVAL; |
25c4d74e GL |
1392 | } |
1393 | ||
36988741 | 1394 | /* 1.-4. Calculate desired client output geometry */ |
eca430c8 | 1395 | soc_camera_calc_client_output(icd, &cam->rect, &cam->subrect, pix, &mf, 12); |
760697be GL |
1396 | mf.field = pix->field; |
1397 | mf.colorspace = pix->colorspace; | |
1398 | mf.code = xlate->code; | |
6a6c8786 | 1399 | |
961801bb GL |
1400 | switch (pixfmt) { |
1401 | case V4L2_PIX_FMT_NV12: | |
1402 | case V4L2_PIX_FMT_NV21: | |
1403 | case V4L2_PIX_FMT_NV16: | |
1404 | case V4L2_PIX_FMT_NV61: | |
6a6c8786 | 1405 | image_mode = true; |
961801bb GL |
1406 | break; |
1407 | default: | |
6a6c8786 | 1408 | image_mode = false; |
9414de39 | 1409 | } |
25c4d74e | 1410 | |
b5518a41 | 1411 | dev_geo(dev, "S_FMT(pix=0x%x, fld 0x%x, code 0x%x, %ux%u)\n", pixfmt, mf.field, mf.code, |
e1db7043 GL |
1412 | pix->width, pix->height); |
1413 | ||
e622681d | 1414 | dev_geo(dev, "4: request camera output %ux%u\n", mf.width, mf.height); |
961801bb | 1415 | |
6a6c8786 | 1416 | /* 5. - 9. */ |
eca430c8 GL |
1417 | ret = soc_camera_client_scale(icd, &cam->rect, &cam->subrect, |
1418 | &mf, &ceu_sub_width, &ceu_sub_height, | |
1419 | image_mode && V4L2_FIELD_NONE == field, 12); | |
6a6c8786 | 1420 | |
e622681d | 1421 | dev_geo(dev, "5-9: client scale return %d\n", ret); |
6a6c8786 GL |
1422 | |
1423 | /* Done with the camera. Now see if we can improve the result */ | |
1424 | ||
b3b5020d GL |
1425 | dev_geo(dev, "fmt %ux%u, requested %ux%u\n", |
1426 | mf.width, mf.height, pix->width, pix->height); | |
6a6c8786 GL |
1427 | if (ret < 0) |
1428 | return ret; | |
1429 | ||
760697be GL |
1430 | if (mf.code != xlate->code) |
1431 | return -EINVAL; | |
1432 | ||
e622681d GL |
1433 | /* 9. Prepare CEU crop */ |
1434 | cam->width = mf.width; | |
1435 | cam->height = mf.height; | |
1436 | ||
6a6c8786 | 1437 | /* 10. Use CEU scaling to scale to the requested user window. */ |
961801bb GL |
1438 | |
1439 | /* We cannot scale up */ | |
e622681d GL |
1440 | if (pix->width > ceu_sub_width) |
1441 | ceu_sub_width = pix->width; | |
961801bb | 1442 | |
e622681d GL |
1443 | if (pix->height > ceu_sub_height) |
1444 | ceu_sub_height = pix->height; | |
961801bb | 1445 | |
760697be GL |
1446 | pix->colorspace = mf.colorspace; |
1447 | ||
1448 | if (image_mode) { | |
1449 | /* Scale pix->{width x height} down to width x height */ | |
e622681d GL |
1450 | scale_h = calc_scale(ceu_sub_width, &pix->width); |
1451 | scale_v = calc_scale(ceu_sub_height, &pix->height); | |
760697be | 1452 | } else { |
e622681d GL |
1453 | pix->width = ceu_sub_width; |
1454 | pix->height = ceu_sub_height; | |
1455 | scale_h = 0; | |
1456 | scale_v = 0; | |
760697be | 1457 | } |
961801bb | 1458 | |
e622681d GL |
1459 | pcdev->cflcr = scale_h | (scale_v << 16); |
1460 | ||
1461 | /* | |
1462 | * We have calculated CFLCR, the actual configuration will be performed | |
1463 | * in sh_mobile_ceu_set_bus_param() | |
1464 | */ | |
1465 | ||
6a6c8786 | 1466 | dev_geo(dev, "10: W: %u : 0x%x = %u, H: %u : 0x%x = %u\n", |
e622681d GL |
1467 | ceu_sub_width, scale_h, pix->width, |
1468 | ceu_sub_height, scale_v, pix->height); | |
961801bb | 1469 | |
760697be | 1470 | cam->code = xlate->code; |
760697be | 1471 | icd->current_fmt = xlate; |
961801bb | 1472 | |
1edcc10d | 1473 | pcdev->field = field; |
6a6c8786 | 1474 | pcdev->image_mode = image_mode; |
961801bb | 1475 | |
eec5ce01 GL |
1476 | /* CFSZR requirement */ |
1477 | pix->width &= ~3; | |
1478 | pix->height &= ~3; | |
1479 | ||
961801bb | 1480 | return 0; |
0d3244d6 MD |
1481 | } |
1482 | ||
fc13baff LP |
1483 | #define CEU_CHDW_MAX 8188U /* Maximum line stride */ |
1484 | ||
d8fac217 GL |
1485 | static int sh_mobile_ceu_try_fmt(struct soc_camera_device *icd, |
1486 | struct v4l2_format *f) | |
0d3244d6 | 1487 | { |
48e971cd GL |
1488 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
1489 | struct sh_mobile_ceu_dev *pcdev = ici->priv; | |
9414de39 | 1490 | const struct soc_camera_format_xlate *xlate; |
904078f1 | 1491 | struct v4l2_pix_format *pix = &f->fmt.pix; |
c9c1f1c0 | 1492 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
760697be | 1493 | struct v4l2_mbus_framefmt mf; |
904078f1 | 1494 | __u32 pixfmt = pix->pixelformat; |
961801bb | 1495 | int width, height; |
ccab8a29 | 1496 | int ret; |
a2c8c68c | 1497 | |
7dfff953 | 1498 | dev_geo(icd->parent, "TRY_FMT(pix=0x%x, %ux%u)\n", |
b3b5020d GL |
1499 | pixfmt, pix->width, pix->height); |
1500 | ||
9414de39 MD |
1501 | xlate = soc_camera_xlate_by_fourcc(icd, pixfmt); |
1502 | if (!xlate) { | |
fec0f72f GL |
1503 | xlate = icd->current_fmt; |
1504 | dev_dbg(icd->parent, "Format %x not found, keeping %x\n", | |
1505 | pixfmt, xlate->host_fmt->fourcc); | |
1506 | pixfmt = xlate->host_fmt->fourcc; | |
1507 | pix->pixelformat = pixfmt; | |
1508 | pix->colorspace = icd->colorspace; | |
9414de39 | 1509 | } |
25c4d74e | 1510 | |
0d3244d6 MD |
1511 | /* FIXME: calculate using depth and bus width */ |
1512 | ||
eec5ce01 | 1513 | /* CFSZR requires height and width to be 4-pixel aligned */ |
48e971cd GL |
1514 | v4l_bound_align_image(&pix->width, 2, pcdev->max_width, 2, |
1515 | &pix->height, 4, pcdev->max_height, 2, 0); | |
0d3244d6 | 1516 | |
961801bb GL |
1517 | width = pix->width; |
1518 | height = pix->height; | |
1519 | ||
0d3244d6 | 1520 | /* limit to sensor capabilities */ |
760697be GL |
1521 | mf.width = pix->width; |
1522 | mf.height = pix->height; | |
1523 | mf.field = pix->field; | |
1524 | mf.code = xlate->code; | |
1525 | mf.colorspace = pix->colorspace; | |
1526 | ||
4c0b036d GL |
1527 | ret = v4l2_device_call_until_err(sd->v4l2_dev, soc_camera_grp_id(icd), |
1528 | video, try_mbus_fmt, &mf); | |
ccab8a29 KM |
1529 | if (ret < 0) |
1530 | return ret; | |
1531 | ||
760697be GL |
1532 | pix->width = mf.width; |
1533 | pix->height = mf.height; | |
1534 | pix->field = mf.field; | |
1535 | pix->colorspace = mf.colorspace; | |
1536 | ||
961801bb GL |
1537 | switch (pixfmt) { |
1538 | case V4L2_PIX_FMT_NV12: | |
1539 | case V4L2_PIX_FMT_NV21: | |
1540 | case V4L2_PIX_FMT_NV16: | |
1541 | case V4L2_PIX_FMT_NV61: | |
1542 | /* FIXME: check against rect_max after converting soc-camera */ | |
1543 | /* We can scale precisely, need a bigger image from camera */ | |
1544 | if (pix->width < width || pix->height < height) { | |
760697be GL |
1545 | /* |
1546 | * We presume, the sensor behaves sanely, i.e., if | |
1547 | * requested a bigger rectangle, it will not return a | |
1548 | * smaller one. | |
1549 | */ | |
48e971cd GL |
1550 | mf.width = pcdev->max_width; |
1551 | mf.height = pcdev->max_height; | |
4c0b036d GL |
1552 | ret = v4l2_device_call_until_err(sd->v4l2_dev, |
1553 | soc_camera_grp_id(icd), video, | |
1554 | try_mbus_fmt, &mf); | |
961801bb GL |
1555 | if (ret < 0) { |
1556 | /* Shouldn't actually happen... */ | |
7dfff953 | 1557 | dev_err(icd->parent, |
760697be GL |
1558 | "FIXME: client try_fmt() = %d\n", ret); |
1559 | return ret; | |
961801bb GL |
1560 | } |
1561 | } | |
760697be GL |
1562 | /* We will scale exactly */ |
1563 | if (mf.width > width) | |
961801bb | 1564 | pix->width = width; |
760697be | 1565 | if (mf.height > height) |
961801bb | 1566 | pix->height = height; |
fc13baff LP |
1567 | |
1568 | pix->bytesperline = max(pix->bytesperline, pix->width); | |
1569 | pix->bytesperline = min(pix->bytesperline, CEU_CHDW_MAX); | |
1570 | pix->bytesperline &= ~3; | |
1571 | break; | |
1572 | ||
1573 | default: | |
1574 | /* Configurable stride isn't supported in pass-through mode. */ | |
1575 | pix->bytesperline = 0; | |
ccab8a29 KM |
1576 | } |
1577 | ||
eec5ce01 GL |
1578 | pix->width &= ~3; |
1579 | pix->height &= ~3; | |
fc13baff | 1580 | pix->sizeimage = 0; |
eec5ce01 | 1581 | |
7dfff953 | 1582 | dev_geo(icd->parent, "%s(): return %d, fmt 0x%x, %ux%u\n", |
b3b5020d GL |
1583 | __func__, ret, pix->pixelformat, pix->width, pix->height); |
1584 | ||
ccab8a29 | 1585 | return ret; |
0d3244d6 MD |
1586 | } |
1587 | ||
3dac322d | 1588 | static int sh_mobile_ceu_set_livecrop(struct soc_camera_device *icd, |
3ecb091e | 1589 | const struct v4l2_crop *a) |
3dac322d GL |
1590 | { |
1591 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); | |
7dfff953 | 1592 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
3dac322d GL |
1593 | struct sh_mobile_ceu_dev *pcdev = ici->priv; |
1594 | u32 out_width = icd->user_width, out_height = icd->user_height; | |
1595 | int ret; | |
1596 | ||
1597 | /* Freeze queue */ | |
1598 | pcdev->frozen = 1; | |
1599 | /* Wait for frame */ | |
1600 | ret = wait_for_completion_interruptible(&pcdev->complete); | |
1601 | /* Stop the client */ | |
1602 | ret = v4l2_subdev_call(sd, video, s_stream, 0); | |
1603 | if (ret < 0) | |
7dfff953 | 1604 | dev_warn(icd->parent, |
3dac322d GL |
1605 | "Client failed to stop the stream: %d\n", ret); |
1606 | else | |
1607 | /* Do the crop, if it fails, there's nothing more we can do */ | |
1608 | sh_mobile_ceu_set_crop(icd, a); | |
1609 | ||
7dfff953 | 1610 | dev_geo(icd->parent, "Output after crop: %ux%u\n", icd->user_width, icd->user_height); |
3dac322d GL |
1611 | |
1612 | if (icd->user_width != out_width || icd->user_height != out_height) { | |
1613 | struct v4l2_format f = { | |
1614 | .type = V4L2_BUF_TYPE_VIDEO_CAPTURE, | |
1615 | .fmt.pix = { | |
1616 | .width = out_width, | |
1617 | .height = out_height, | |
1618 | .pixelformat = icd->current_fmt->host_fmt->fourcc, | |
1619 | .field = pcdev->field, | |
1620 | .colorspace = icd->colorspace, | |
1621 | }, | |
1622 | }; | |
1623 | ret = sh_mobile_ceu_set_fmt(icd, &f); | |
1624 | if (!ret && (out_width != f.fmt.pix.width || | |
1625 | out_height != f.fmt.pix.height)) | |
1626 | ret = -EINVAL; | |
1627 | if (!ret) { | |
eec5ce01 GL |
1628 | icd->user_width = out_width & ~3; |
1629 | icd->user_height = out_height & ~3; | |
8843d119 | 1630 | ret = sh_mobile_ceu_set_bus_param(icd); |
3dac322d GL |
1631 | } |
1632 | } | |
1633 | ||
1634 | /* Thaw the queue */ | |
1635 | pcdev->frozen = 0; | |
1636 | spin_lock_irq(&pcdev->lock); | |
1637 | sh_mobile_ceu_capture(pcdev); | |
1638 | spin_unlock_irq(&pcdev->lock); | |
1639 | /* Start the client */ | |
1640 | ret = v4l2_subdev_call(sd, video, s_stream, 1); | |
1641 | return ret; | |
1642 | } | |
1643 | ||
0d3244d6 MD |
1644 | static unsigned int sh_mobile_ceu_poll(struct file *file, poll_table *pt) |
1645 | { | |
57bee29d | 1646 | struct soc_camera_device *icd = file->private_data; |
0d3244d6 | 1647 | |
a616898d | 1648 | return vb2_poll(&icd->vb2_vidq, file, pt); |
0d3244d6 MD |
1649 | } |
1650 | ||
1651 | static int sh_mobile_ceu_querycap(struct soc_camera_host *ici, | |
1652 | struct v4l2_capability *cap) | |
1653 | { | |
1654 | strlcpy(cap->card, "SuperH_Mobile_CEU", sizeof(cap->card)); | |
7d96c3e4 GL |
1655 | cap->device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING; |
1656 | cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS; | |
1657 | ||
0d3244d6 MD |
1658 | return 0; |
1659 | } | |
1660 | ||
a616898d GL |
1661 | static int sh_mobile_ceu_init_videobuf(struct vb2_queue *q, |
1662 | struct soc_camera_device *icd) | |
0d3244d6 | 1663 | { |
a616898d GL |
1664 | q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; |
1665 | q->io_modes = VB2_MMAP | VB2_USERPTR; | |
1666 | q->drv_priv = icd; | |
1667 | q->ops = &sh_mobile_ceu_videobuf_ops; | |
1668 | q->mem_ops = &vb2_dma_contig_memops; | |
1669 | q->buf_struct_size = sizeof(struct sh_mobile_ceu_buffer); | |
ade48681 | 1670 | q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC; |
a616898d GL |
1671 | |
1672 | return vb2_queue_init(q); | |
0d3244d6 MD |
1673 | } |
1674 | ||
1675 | static struct soc_camera_host_ops sh_mobile_ceu_host_ops = { | |
1676 | .owner = THIS_MODULE, | |
1677 | .add = sh_mobile_ceu_add_device, | |
1678 | .remove = sh_mobile_ceu_remove_device, | |
0ff6a6e8 GL |
1679 | .clock_start = sh_mobile_ceu_clock_start, |
1680 | .clock_stop = sh_mobile_ceu_clock_stop, | |
9414de39 | 1681 | .get_formats = sh_mobile_ceu_get_formats, |
904078f1 | 1682 | .put_formats = sh_mobile_ceu_put_formats, |
e622681d | 1683 | .get_crop = sh_mobile_ceu_get_crop, |
09e231b3 | 1684 | .set_crop = sh_mobile_ceu_set_crop, |
3dac322d | 1685 | .set_livecrop = sh_mobile_ceu_set_livecrop, |
d8fac217 GL |
1686 | .set_fmt = sh_mobile_ceu_set_fmt, |
1687 | .try_fmt = sh_mobile_ceu_try_fmt, | |
0d3244d6 MD |
1688 | .poll = sh_mobile_ceu_poll, |
1689 | .querycap = sh_mobile_ceu_querycap, | |
0d3244d6 | 1690 | .set_bus_param = sh_mobile_ceu_set_bus_param, |
a616898d | 1691 | .init_videobuf2 = sh_mobile_ceu_init_videobuf, |
0d3244d6 MD |
1692 | }; |
1693 | ||
b3b5020d GL |
1694 | struct bus_wait { |
1695 | struct notifier_block notifier; | |
1696 | struct completion completion; | |
1697 | struct device *dev; | |
1698 | }; | |
1699 | ||
1700 | static int bus_notify(struct notifier_block *nb, | |
1701 | unsigned long action, void *data) | |
1702 | { | |
1703 | struct device *dev = data; | |
1704 | struct bus_wait *wait = container_of(nb, struct bus_wait, notifier); | |
1705 | ||
1706 | if (wait->dev != dev) | |
1707 | return NOTIFY_DONE; | |
1708 | ||
1709 | switch (action) { | |
1710 | case BUS_NOTIFY_UNBOUND_DRIVER: | |
1711 | /* Protect from module unloading */ | |
1712 | wait_for_completion(&wait->completion); | |
1713 | return NOTIFY_OK; | |
1714 | } | |
1715 | return NOTIFY_DONE; | |
1716 | } | |
1717 | ||
4c62e976 | 1718 | static int sh_mobile_ceu_probe(struct platform_device *pdev) |
0d3244d6 MD |
1719 | { |
1720 | struct sh_mobile_ceu_dev *pcdev; | |
1721 | struct resource *res; | |
1722 | void __iomem *base; | |
1723 | unsigned int irq; | |
676d2d4f | 1724 | int err, i; |
b3b5020d GL |
1725 | struct bus_wait wait = { |
1726 | .completion = COMPLETION_INITIALIZER_ONSTACK(wait.completion), | |
1727 | .notifier.notifier_call = bus_notify, | |
1728 | }; | |
6b526fed | 1729 | struct sh_mobile_ceu_companion *csi2; |
0d3244d6 MD |
1730 | |
1731 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); | |
1732 | irq = platform_get_irq(pdev, 0); | |
b89fc2e5 | 1733 | if (!res || (int)irq <= 0) { |
0d3244d6 | 1734 | dev_err(&pdev->dev, "Not enough CEU platform resources.\n"); |
a500a185 | 1735 | return -ENODEV; |
0d3244d6 MD |
1736 | } |
1737 | ||
a500a185 | 1738 | pcdev = devm_kzalloc(&pdev->dev, sizeof(*pcdev), GFP_KERNEL); |
0d3244d6 MD |
1739 | if (!pcdev) { |
1740 | dev_err(&pdev->dev, "Could not allocate pcdev\n"); | |
a500a185 | 1741 | return -ENOMEM; |
0d3244d6 MD |
1742 | } |
1743 | ||
0d3244d6 MD |
1744 | INIT_LIST_HEAD(&pcdev->capture); |
1745 | spin_lock_init(&pcdev->lock); | |
3dac322d | 1746 | init_completion(&pcdev->complete); |
0d3244d6 MD |
1747 | |
1748 | pcdev->pdata = pdev->dev.platform_data; | |
f146e4e7 | 1749 | if (!pcdev->pdata && !pdev->dev.of_node) { |
0d3244d6 | 1750 | dev_err(&pdev->dev, "CEU platform data not set.\n"); |
a500a185 | 1751 | return -EINVAL; |
0d3244d6 MD |
1752 | } |
1753 | ||
f146e4e7 GL |
1754 | /* TODO: implement per-device bus flags */ |
1755 | if (pcdev->pdata) { | |
812e8b22 GL |
1756 | pcdev->max_width = pcdev->pdata->max_width; |
1757 | pcdev->max_height = pcdev->pdata->max_height; | |
f146e4e7 GL |
1758 | pcdev->flags = pcdev->pdata->flags; |
1759 | } | |
48e971cd | 1760 | |
812e8b22 GL |
1761 | if (!pcdev->max_width) { |
1762 | unsigned int v; | |
1763 | err = of_property_read_u32(pdev->dev.of_node, "renesas,max-width", &v); | |
1764 | if (!err) | |
1765 | pcdev->max_width = v; | |
1766 | ||
1767 | if (!pcdev->max_width) | |
1768 | pcdev->max_width = 2560; | |
1769 | } | |
1770 | if (!pcdev->max_height) { | |
1771 | unsigned int v; | |
1772 | err = of_property_read_u32(pdev->dev.of_node, "renesas,max-height", &v); | |
1773 | if (!err) | |
1774 | pcdev->max_height = v; | |
1775 | ||
1776 | if (!pcdev->max_height) | |
1777 | pcdev->max_height = 1920; | |
1778 | } | |
1779 | ||
15a09342 SK |
1780 | base = devm_ioremap_resource(&pdev->dev, res); |
1781 | if (IS_ERR(base)) | |
1782 | return PTR_ERR(base); | |
0d3244d6 MD |
1783 | |
1784 | pcdev->irq = irq; | |
1785 | pcdev->base = base; | |
1786 | pcdev->video_limit = 0; /* only enabled if second resource exists */ | |
0d3244d6 MD |
1787 | |
1788 | res = platform_get_resource(pdev, IORESOURCE_MEM, 1); | |
1789 | if (res) { | |
1790 | err = dma_declare_coherent_memory(&pdev->dev, res->start, | |
1791 | res->start, | |
eb6c8558 | 1792 | resource_size(res), |
0d3244d6 MD |
1793 | DMA_MEMORY_MAP | |
1794 | DMA_MEMORY_EXCLUSIVE); | |
1795 | if (!err) { | |
1796 | dev_err(&pdev->dev, "Unable to declare CEU memory.\n"); | |
a500a185 | 1797 | return -ENXIO; |
0d3244d6 MD |
1798 | } |
1799 | ||
eb6c8558 | 1800 | pcdev->video_limit = resource_size(res); |
0d3244d6 MD |
1801 | } |
1802 | ||
1803 | /* request irq */ | |
a500a185 | 1804 | err = devm_request_irq(&pdev->dev, pcdev->irq, sh_mobile_ceu_irq, |
c656ead4 | 1805 | 0, dev_name(&pdev->dev), pcdev); |
0d3244d6 MD |
1806 | if (err) { |
1807 | dev_err(&pdev->dev, "Unable to register CEU interrupt.\n"); | |
1808 | goto exit_release_mem; | |
1809 | } | |
1810 | ||
6d1386c6 MD |
1811 | pm_suspend_ignore_children(&pdev->dev, true); |
1812 | pm_runtime_enable(&pdev->dev); | |
1813 | pm_runtime_resume(&pdev->dev); | |
a42b6dd6 | 1814 | |
0d3244d6 | 1815 | pcdev->ici.priv = pcdev; |
979ea1dd | 1816 | pcdev->ici.v4l2_dev.dev = &pdev->dev; |
0d3244d6 | 1817 | pcdev->ici.nr = pdev->id; |
af128a10 KS |
1818 | pcdev->ici.drv_name = dev_name(&pdev->dev); |
1819 | pcdev->ici.ops = &sh_mobile_ceu_host_ops; | |
fc13baff | 1820 | pcdev->ici.capabilities = SOCAM_HOST_CAP_STRIDE; |
0d3244d6 | 1821 | |
6b526fed GL |
1822 | pcdev->alloc_ctx = vb2_dma_contig_init_ctx(&pdev->dev); |
1823 | if (IS_ERR(pcdev->alloc_ctx)) { | |
1824 | err = PTR_ERR(pcdev->alloc_ctx); | |
1825 | goto exit_free_clk; | |
1826 | } | |
1827 | ||
676d2d4f GL |
1828 | if (pcdev->pdata && pcdev->pdata->asd_sizes) { |
1829 | struct v4l2_async_subdev **asd; | |
1830 | char name[] = "sh-mobile-csi2"; | |
1831 | int j; | |
1832 | ||
1833 | /* | |
1834 | * CSI2 interfacing: several groups can use CSI2, pick up the | |
1835 | * first one | |
1836 | */ | |
1837 | asd = pcdev->pdata->asd; | |
1838 | for (j = 0; pcdev->pdata->asd_sizes[j]; j++) { | |
1839 | for (i = 0; i < pcdev->pdata->asd_sizes[j]; i++, asd++) { | |
1840 | dev_dbg(&pdev->dev, "%s(): subdev #%d, type %u\n", | |
cfca7644 SN |
1841 | __func__, i, (*asd)->match_type); |
1842 | if ((*asd)->match_type == V4L2_ASYNC_MATCH_DEVNAME && | |
1843 | !strncmp(name, (*asd)->match.device_name.name, | |
676d2d4f GL |
1844 | sizeof(name) - 1)) { |
1845 | pcdev->csi2_asd = *asd; | |
1846 | break; | |
1847 | } | |
1848 | } | |
1849 | if (pcdev->csi2_asd) | |
1850 | break; | |
1851 | } | |
1852 | ||
1853 | pcdev->ici.asd = pcdev->pdata->asd; | |
1854 | pcdev->ici.asd_sizes = pcdev->pdata->asd_sizes; | |
1855 | } | |
6b526fed | 1856 | |
676d2d4f | 1857 | /* Legacy CSI2 interfacing */ |
f146e4e7 | 1858 | csi2 = pcdev->pdata ? pcdev->pdata->csi2 : NULL; |
b3b5020d | 1859 | if (csi2) { |
676d2d4f GL |
1860 | /* |
1861 | * TODO: remove this once all users are converted to | |
1862 | * asynchronous CSI2 probing. If it has to be kept, csi2 | |
1863 | * platform device resources have to be added, using | |
1864 | * platform_device_add_resources() | |
1865 | */ | |
6b526fed GL |
1866 | struct platform_device *csi2_pdev = |
1867 | platform_device_alloc("sh-mobile-csi2", csi2->id); | |
1868 | struct sh_csi2_pdata *csi2_pdata = csi2->platform_data; | |
1869 | ||
1870 | if (!csi2_pdev) { | |
1871 | err = -ENOMEM; | |
676d2d4f | 1872 | goto exit_free_ctx; |
6b526fed GL |
1873 | } |
1874 | ||
1875 | pcdev->csi2_pdev = csi2_pdev; | |
1876 | ||
676d2d4f GL |
1877 | err = platform_device_add_data(csi2_pdev, csi2_pdata, |
1878 | sizeof(*csi2_pdata)); | |
6b526fed GL |
1879 | if (err < 0) |
1880 | goto exit_pdev_put; | |
1881 | ||
6b526fed GL |
1882 | csi2_pdev->resource = csi2->resource; |
1883 | csi2_pdev->num_resources = csi2->num_resources; | |
1884 | ||
1885 | err = platform_device_add(csi2_pdev); | |
1886 | if (err < 0) | |
1887 | goto exit_pdev_put; | |
1888 | ||
1889 | wait.dev = &csi2_pdev->dev; | |
b3b5020d GL |
1890 | |
1891 | err = bus_register_notifier(&platform_bus_type, &wait.notifier); | |
1892 | if (err < 0) | |
6b526fed | 1893 | goto exit_pdev_unregister; |
b3b5020d GL |
1894 | |
1895 | /* | |
1896 | * From this point the driver module will not unload, until | |
1897 | * we complete the completion. | |
1898 | */ | |
1899 | ||
6b526fed | 1900 | if (!csi2_pdev->dev.driver) { |
b3b5020d GL |
1901 | complete(&wait.completion); |
1902 | /* Either too late, or probing failed */ | |
1903 | bus_unregister_notifier(&platform_bus_type, &wait.notifier); | |
1904 | err = -ENXIO; | |
6b526fed | 1905 | goto exit_pdev_unregister; |
b3b5020d GL |
1906 | } |
1907 | ||
1908 | /* | |
1909 | * The module is still loaded, in the worst case it is hanging | |
1910 | * in device release on our completion. So, _now_ dereferencing | |
1911 | * the "owner" is safe! | |
1912 | */ | |
1913 | ||
6b526fed | 1914 | err = try_module_get(csi2_pdev->dev.driver->owner); |
b3b5020d GL |
1915 | |
1916 | /* Let notifier complete, if it has been locked */ | |
1917 | complete(&wait.completion); | |
1918 | bus_unregister_notifier(&platform_bus_type, &wait.notifier); | |
1919 | if (!err) { | |
1920 | err = -ENODEV; | |
6b526fed | 1921 | goto exit_pdev_unregister; |
b3b5020d | 1922 | } |
676d2d4f GL |
1923 | |
1924 | pcdev->csi2_sd = platform_get_drvdata(csi2_pdev); | |
1925 | } | |
1926 | ||
1927 | err = soc_camera_host_register(&pcdev->ici); | |
1928 | if (err) | |
1929 | goto exit_csi2_unregister; | |
1930 | ||
1931 | if (csi2) { | |
1932 | err = v4l2_device_register_subdev(&pcdev->ici.v4l2_dev, | |
1933 | pcdev->csi2_sd); | |
1934 | dev_dbg(&pdev->dev, "%s(): ret(register_subdev) = %d\n", | |
1935 | __func__, err); | |
1936 | if (err < 0) | |
1937 | goto exit_host_unregister; | |
1938 | /* v4l2_device_register_subdev() took a reference too */ | |
1939 | module_put(pcdev->csi2_sd->owner); | |
b3b5020d GL |
1940 | } |
1941 | ||
0d3244d6 MD |
1942 | return 0; |
1943 | ||
6b526fed GL |
1944 | exit_host_unregister: |
1945 | soc_camera_host_unregister(&pcdev->ici); | |
676d2d4f GL |
1946 | exit_csi2_unregister: |
1947 | if (csi2) { | |
1948 | module_put(pcdev->csi2_pdev->dev.driver->owner); | |
1949 | exit_pdev_unregister: | |
1950 | platform_device_del(pcdev->csi2_pdev); | |
1951 | exit_pdev_put: | |
1952 | pcdev->csi2_pdev->resource = NULL; | |
1953 | platform_device_put(pcdev->csi2_pdev); | |
1954 | } | |
a616898d GL |
1955 | exit_free_ctx: |
1956 | vb2_dma_contig_cleanup_ctx(pcdev->alloc_ctx); | |
055e05a0 KM |
1957 | exit_free_clk: |
1958 | pm_runtime_disable(&pdev->dev); | |
0d3244d6 MD |
1959 | exit_release_mem: |
1960 | if (platform_get_resource(pdev, IORESOURCE_MEM, 1)) | |
1961 | dma_release_declared_memory(&pdev->dev); | |
0d3244d6 MD |
1962 | return err; |
1963 | } | |
1964 | ||
4c62e976 | 1965 | static int sh_mobile_ceu_remove(struct platform_device *pdev) |
0d3244d6 | 1966 | { |
eff505fa GL |
1967 | struct soc_camera_host *soc_host = to_soc_camera_host(&pdev->dev); |
1968 | struct sh_mobile_ceu_dev *pcdev = container_of(soc_host, | |
1969 | struct sh_mobile_ceu_dev, ici); | |
6b526fed | 1970 | struct platform_device *csi2_pdev = pcdev->csi2_pdev; |
0d3244d6 | 1971 | |
eff505fa | 1972 | soc_camera_host_unregister(soc_host); |
055e05a0 | 1973 | pm_runtime_disable(&pdev->dev); |
0d3244d6 MD |
1974 | if (platform_get_resource(pdev, IORESOURCE_MEM, 1)) |
1975 | dma_release_declared_memory(&pdev->dev); | |
a616898d | 1976 | vb2_dma_contig_cleanup_ctx(pcdev->alloc_ctx); |
6b526fed GL |
1977 | if (csi2_pdev && csi2_pdev->dev.driver) { |
1978 | struct module *csi2_drv = csi2_pdev->dev.driver->owner; | |
1979 | platform_device_del(csi2_pdev); | |
1980 | csi2_pdev->resource = NULL; | |
1981 | platform_device_put(csi2_pdev); | |
1982 | module_put(csi2_drv); | |
1983 | } | |
b3b5020d | 1984 | |
0d3244d6 MD |
1985 | return 0; |
1986 | } | |
1987 | ||
6d1386c6 MD |
1988 | static int sh_mobile_ceu_runtime_nop(struct device *dev) |
1989 | { | |
1990 | /* Runtime PM callback shared between ->runtime_suspend() | |
1991 | * and ->runtime_resume(). Simply returns success. | |
1992 | * | |
1993 | * This driver re-initializes all registers after | |
1994 | * pm_runtime_get_sync() anyway so there is no need | |
1995 | * to save and restore registers here. | |
1996 | */ | |
1997 | return 0; | |
1998 | } | |
1999 | ||
47145210 | 2000 | static const struct dev_pm_ops sh_mobile_ceu_dev_pm_ops = { |
6d1386c6 MD |
2001 | .runtime_suspend = sh_mobile_ceu_runtime_nop, |
2002 | .runtime_resume = sh_mobile_ceu_runtime_nop, | |
2003 | }; | |
2004 | ||
f146e4e7 GL |
2005 | static const struct of_device_id sh_mobile_ceu_of_match[] = { |
2006 | { .compatible = "renesas,sh-mobile-ceu" }, | |
2007 | { } | |
2008 | }; | |
2009 | MODULE_DEVICE_TABLE(of, sh_mobile_ceu_of_match); | |
2010 | ||
0d3244d6 | 2011 | static struct platform_driver sh_mobile_ceu_driver = { |
ca0c4ba7 | 2012 | .driver = { |
0d3244d6 | 2013 | .name = "sh_mobile_ceu", |
6d1386c6 | 2014 | .pm = &sh_mobile_ceu_dev_pm_ops, |
f146e4e7 | 2015 | .of_match_table = sh_mobile_ceu_of_match, |
0d3244d6 MD |
2016 | }, |
2017 | .probe = sh_mobile_ceu_probe, | |
4c62e976 | 2018 | .remove = sh_mobile_ceu_remove, |
0d3244d6 MD |
2019 | }; |
2020 | ||
2021 | static int __init sh_mobile_ceu_init(void) | |
2022 | { | |
b3b5020d GL |
2023 | /* Whatever return code */ |
2024 | request_module("sh_mobile_csi2"); | |
0d3244d6 MD |
2025 | return platform_driver_register(&sh_mobile_ceu_driver); |
2026 | } | |
2027 | ||
2028 | static void __exit sh_mobile_ceu_exit(void) | |
2029 | { | |
01c1e4ca | 2030 | platform_driver_unregister(&sh_mobile_ceu_driver); |
0d3244d6 MD |
2031 | } |
2032 | ||
2033 | module_init(sh_mobile_ceu_init); | |
2034 | module_exit(sh_mobile_ceu_exit); | |
2035 | ||
2036 | MODULE_DESCRIPTION("SuperH Mobile CEU driver"); | |
2037 | MODULE_AUTHOR("Magnus Damm"); | |
2038 | MODULE_LICENSE("GPL"); | |
676d2d4f | 2039 | MODULE_VERSION("0.1.0"); |
40e2e092 | 2040 | MODULE_ALIAS("platform:sh_mobile_ceu"); |