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0d3244d6 MD |
1 | /* |
2 | * V4L2 Driver for SuperH Mobile CEU interface | |
3 | * | |
4 | * Copyright (C) 2008 Magnus Damm | |
5 | * | |
6 | * Based on V4L2 Driver for PXA camera host - "pxa_camera.c", | |
7 | * | |
8 | * Copyright (C) 2006, Sascha Hauer, Pengutronix | |
9 | * Copyright (C) 2008, Guennadi Liakhovetski <kernel@pengutronix.de> | |
10 | * | |
11 | * This program is free software; you can redistribute it and/or modify | |
12 | * it under the terms of the GNU General Public License as published by | |
13 | * the Free Software Foundation; either version 2 of the License, or | |
14 | * (at your option) any later version. | |
15 | */ | |
16 | ||
17 | #include <linux/init.h> | |
18 | #include <linux/module.h> | |
19 | #include <linux/io.h> | |
20 | #include <linux/delay.h> | |
21 | #include <linux/dma-mapping.h> | |
22 | #include <linux/errno.h> | |
23 | #include <linux/fs.h> | |
24 | #include <linux/interrupt.h> | |
25 | #include <linux/kernel.h> | |
26 | #include <linux/mm.h> | |
27 | #include <linux/moduleparam.h> | |
28 | #include <linux/time.h> | |
29 | #include <linux/version.h> | |
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> | |
a616898d | 41 | #include <media/videobuf2-dma-contig.h> |
760697be GL |
42 | #include <media/v4l2-mediabus.h> |
43 | #include <media/soc_mediabus.h> | |
0d3244d6 MD |
44 | |
45 | /* register offsets for sh7722 / sh7723 */ | |
46 | ||
dd54203b MD |
47 | #define CAPSR 0x00 /* Capture start register */ |
48 | #define CAPCR 0x04 /* Capture control register */ | |
49 | #define CAMCR 0x08 /* Capture interface control register */ | |
50 | #define CMCYR 0x0c /* Capture interface cycle register */ | |
51 | #define CAMOR 0x10 /* Capture interface offset register */ | |
52 | #define CAPWR 0x14 /* Capture interface width register */ | |
53 | #define CAIFR 0x18 /* Capture interface input format register */ | |
54 | #define CSTCR 0x20 /* Camera strobe control register (<= sh7722) */ | |
55 | #define CSECR 0x24 /* Camera strobe emission count register (<= sh7722) */ | |
56 | #define CRCNTR 0x28 /* CEU register control register */ | |
57 | #define CRCMPR 0x2c /* CEU register forcible control register */ | |
58 | #define CFLCR 0x30 /* Capture filter control register */ | |
59 | #define CFSZR 0x34 /* Capture filter size clip register */ | |
60 | #define CDWDR 0x38 /* Capture destination width register */ | |
61 | #define CDAYR 0x3c /* Capture data address Y register */ | |
62 | #define CDACR 0x40 /* Capture data address C register */ | |
63 | #define CDBYR 0x44 /* Capture data bottom-field address Y register */ | |
64 | #define CDBCR 0x48 /* Capture data bottom-field address C register */ | |
65 | #define CBDSR 0x4c /* Capture bundle destination size register */ | |
66 | #define CFWCR 0x5c /* Firewall operation control register */ | |
67 | #define CLFCR 0x60 /* Capture low-pass filter control register */ | |
68 | #define CDOCR 0x64 /* Capture data output control register */ | |
69 | #define CDDCR 0x68 /* Capture data complexity level register */ | |
70 | #define CDDAR 0x6c /* Capture data complexity level address register */ | |
71 | #define CEIER 0x70 /* Capture event interrupt enable register */ | |
72 | #define CETCR 0x74 /* Capture event flag clear register */ | |
73 | #define CSTSR 0x7c /* Capture status register */ | |
74 | #define CSRTR 0x80 /* Capture software reset register */ | |
75 | #define CDSSR 0x84 /* Capture data size register */ | |
76 | #define CDAYR2 0x90 /* Capture data address Y register 2 */ | |
77 | #define CDACR2 0x94 /* Capture data address C register 2 */ | |
78 | #define CDBYR2 0x98 /* Capture data bottom-field address Y register 2 */ | |
79 | #define CDBCR2 0x9c /* Capture data bottom-field address C register 2 */ | |
0d3244d6 | 80 | |
6a6c8786 GL |
81 | #undef DEBUG_GEOMETRY |
82 | #ifdef DEBUG_GEOMETRY | |
83 | #define dev_geo dev_info | |
84 | #else | |
85 | #define dev_geo dev_dbg | |
86 | #endif | |
87 | ||
0d3244d6 MD |
88 | /* per video frame buffer */ |
89 | struct sh_mobile_ceu_buffer { | |
a616898d GL |
90 | struct vb2_buffer vb; /* v4l buffer must be first */ |
91 | struct list_head queue; | |
760697be | 92 | enum v4l2_mbus_pixelcode code; |
0d3244d6 MD |
93 | }; |
94 | ||
95 | struct sh_mobile_ceu_dev { | |
0d3244d6 MD |
96 | struct soc_camera_host ici; |
97 | struct soc_camera_device *icd; | |
98 | ||
99 | unsigned int irq; | |
100 | void __iomem *base; | |
101 | unsigned long video_limit; | |
102 | ||
a616898d | 103 | spinlock_t lock; /* Protects video buffer lists */ |
0d3244d6 | 104 | struct list_head capture; |
a616898d GL |
105 | struct vb2_buffer *active; |
106 | struct vb2_alloc_ctx *alloc_ctx; | |
0d3244d6 MD |
107 | |
108 | struct sh_mobile_ceu_info *pdata; | |
8be65dc5 | 109 | |
961801bb GL |
110 | u32 cflcr; |
111 | ||
1edcc10d | 112 | enum v4l2_field field; |
a616898d | 113 | int sequence; |
1edcc10d | 114 | |
904078f1 GL |
115 | unsigned int image_mode:1; |
116 | unsigned int is_16bit:1; | |
117 | }; | |
118 | ||
119 | struct sh_mobile_ceu_cam { | |
e622681d GL |
120 | /* CEU offsets within scaled by the CEU camera output */ |
121 | unsigned int ceu_left; | |
122 | unsigned int ceu_top; | |
123 | /* Client output, as seen by the CEU */ | |
124 | unsigned int width; | |
125 | unsigned int height; | |
126 | /* | |
127 | * User window from S_CROP / G_CROP, produced by client cropping and | |
128 | * scaling, CEU scaling and CEU cropping, mapped back onto the client | |
129 | * input window | |
130 | */ | |
131 | struct v4l2_rect subrect; | |
132 | /* Camera cropping rectangle */ | |
133 | struct v4l2_rect rect; | |
760697be GL |
134 | const struct soc_mbus_pixelfmt *extra_fmt; |
135 | enum v4l2_mbus_pixelcode code; | |
0d3244d6 MD |
136 | }; |
137 | ||
a616898d GL |
138 | static struct sh_mobile_ceu_buffer *to_ceu_vb(struct vb2_buffer *vb) |
139 | { | |
140 | return container_of(vb, struct sh_mobile_ceu_buffer, vb); | |
141 | } | |
142 | ||
c354b400 KM |
143 | static unsigned long make_bus_param(struct sh_mobile_ceu_dev *pcdev) |
144 | { | |
145 | unsigned long flags; | |
146 | ||
147 | flags = SOCAM_MASTER | | |
148 | SOCAM_PCLK_SAMPLE_RISING | | |
149 | SOCAM_HSYNC_ACTIVE_HIGH | | |
150 | SOCAM_HSYNC_ACTIVE_LOW | | |
151 | SOCAM_VSYNC_ACTIVE_HIGH | | |
152 | SOCAM_VSYNC_ACTIVE_LOW | | |
153 | SOCAM_DATA_ACTIVE_HIGH; | |
154 | ||
155 | if (pcdev->pdata->flags & SH_CEU_FLAG_USE_8BIT_BUS) | |
156 | flags |= SOCAM_DATAWIDTH_8; | |
157 | ||
158 | if (pcdev->pdata->flags & SH_CEU_FLAG_USE_16BIT_BUS) | |
159 | flags |= SOCAM_DATAWIDTH_16; | |
160 | ||
161 | if (flags & SOCAM_DATAWIDTH_MASK) | |
162 | return flags; | |
163 | ||
164 | return 0; | |
165 | } | |
166 | ||
0d3244d6 | 167 | static void ceu_write(struct sh_mobile_ceu_dev *priv, |
7a1a8164 | 168 | unsigned long reg_offs, u32 data) |
0d3244d6 MD |
169 | { |
170 | iowrite32(data, priv->base + reg_offs); | |
171 | } | |
172 | ||
7a1a8164 | 173 | static u32 ceu_read(struct sh_mobile_ceu_dev *priv, unsigned long reg_offs) |
0d3244d6 MD |
174 | { |
175 | return ioread32(priv->base + reg_offs); | |
176 | } | |
177 | ||
b1de7aeb KM |
178 | static int sh_mobile_ceu_soft_reset(struct sh_mobile_ceu_dev *pcdev) |
179 | { | |
180 | int i, success = 0; | |
181 | struct soc_camera_device *icd = pcdev->icd; | |
182 | ||
183 | ceu_write(pcdev, CAPSR, 1 << 16); /* reset */ | |
184 | ||
185 | /* wait CSTSR.CPTON bit */ | |
186 | for (i = 0; i < 1000; i++) { | |
187 | if (!(ceu_read(pcdev, CSTSR) & 1)) { | |
188 | success++; | |
189 | break; | |
190 | } | |
191 | udelay(1); | |
192 | } | |
193 | ||
194 | /* wait CAPSR.CPKIL bit */ | |
195 | for (i = 0; i < 1000; i++) { | |
196 | if (!(ceu_read(pcdev, CAPSR) & (1 << 16))) { | |
197 | success++; | |
198 | break; | |
199 | } | |
200 | udelay(1); | |
201 | } | |
202 | ||
203 | ||
204 | if (2 != success) { | |
205 | dev_warn(&icd->dev, "soft reset time out\n"); | |
206 | return -EIO; | |
207 | } | |
208 | ||
209 | return 0; | |
210 | } | |
211 | ||
0d3244d6 MD |
212 | /* |
213 | * Videobuf operations | |
214 | */ | |
a616898d GL |
215 | static int sh_mobile_ceu_videobuf_setup(struct vb2_queue *vq, |
216 | unsigned int *count, unsigned int *num_planes, | |
217 | unsigned long sizes[], void *alloc_ctxs[]) | |
0d3244d6 | 218 | { |
a616898d | 219 | struct soc_camera_device *icd = container_of(vq, struct soc_camera_device, vb2_vidq); |
0d3244d6 MD |
220 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); |
221 | struct sh_mobile_ceu_dev *pcdev = ici->priv; | |
760697be GL |
222 | int bytes_per_line = soc_mbus_bytes_per_line(icd->user_width, |
223 | icd->current_fmt->host_fmt); | |
0d3244d6 | 224 | |
760697be GL |
225 | if (bytes_per_line < 0) |
226 | return bytes_per_line; | |
227 | ||
a616898d GL |
228 | *num_planes = 1; |
229 | ||
230 | pcdev->sequence = 0; | |
231 | sizes[0] = bytes_per_line * icd->user_height; | |
232 | alloc_ctxs[0] = pcdev->alloc_ctx; | |
0d3244d6 | 233 | |
a616898d | 234 | if (!*count) |
0d3244d6 MD |
235 | *count = 2; |
236 | ||
237 | if (pcdev->video_limit) { | |
a616898d GL |
238 | if (PAGE_ALIGN(sizes[0]) * *count > pcdev->video_limit) |
239 | *count = pcdev->video_limit / PAGE_ALIGN(sizes[0]); | |
0d3244d6 MD |
240 | } |
241 | ||
a616898d | 242 | dev_dbg(icd->dev.parent, "count=%d, size=%lu\n", *count, sizes[0]); |
0d3244d6 MD |
243 | |
244 | return 0; | |
245 | } | |
246 | ||
7a1a8164 MD |
247 | #define CEU_CETCR_MAGIC 0x0317f313 /* acknowledge magical interrupt sources */ |
248 | #define CEU_CETCR_IGRW (1 << 4) /* prohibited register access interrupt bit */ | |
249 | #define CEU_CEIER_CPEIE (1 << 0) /* one-frame capture end interrupt */ | |
5cf93f1d | 250 | #define CEU_CEIER_VBP (1 << 20) /* vbp error */ |
7a1a8164 | 251 | #define CEU_CAPCR_CTNCP (1 << 16) /* continuous capture mode (if set) */ |
5cf93f1d | 252 | #define CEU_CEIER_MASK (CEU_CEIER_CPEIE | CEU_CEIER_VBP) |
7a1a8164 MD |
253 | |
254 | ||
5cf93f1d KM |
255 | /* |
256 | * return value doesn't reflex the success/failure to queue the new buffer, | |
257 | * but rather the status of the previous buffer. | |
258 | */ | |
259 | static int sh_mobile_ceu_capture(struct sh_mobile_ceu_dev *pcdev) | |
0d3244d6 | 260 | { |
8be65dc5 | 261 | struct soc_camera_device *icd = pcdev->icd; |
ccab8a29 | 262 | dma_addr_t phys_addr_top, phys_addr_bottom; |
1edcc10d KM |
263 | unsigned long top1, top2; |
264 | unsigned long bottom1, bottom2; | |
5cf93f1d KM |
265 | u32 status; |
266 | int ret = 0; | |
7a1a8164 | 267 | |
5d28d525 GL |
268 | /* |
269 | * The hardware is _very_ picky about this sequence. Especially | |
7a1a8164 MD |
270 | * the CEU_CETCR_MAGIC value. It seems like we need to acknowledge |
271 | * several not-so-well documented interrupt sources in CETCR. | |
272 | */ | |
5cf93f1d KM |
273 | ceu_write(pcdev, CEIER, ceu_read(pcdev, CEIER) & ~CEU_CEIER_MASK); |
274 | status = ceu_read(pcdev, CETCR); | |
275 | ceu_write(pcdev, CETCR, ~status & CEU_CETCR_MAGIC); | |
276 | ceu_write(pcdev, CEIER, ceu_read(pcdev, CEIER) | CEU_CEIER_MASK); | |
7a1a8164 MD |
277 | ceu_write(pcdev, CAPCR, ceu_read(pcdev, CAPCR) & ~CEU_CAPCR_CTNCP); |
278 | ceu_write(pcdev, CETCR, CEU_CETCR_MAGIC ^ CEU_CETCR_IGRW); | |
0d3244d6 | 279 | |
5cf93f1d KM |
280 | /* |
281 | * When a VBP interrupt occurs, a capture end interrupt does not occur | |
282 | * and the image of that frame is not captured correctly. So, soft reset | |
283 | * is needed here. | |
284 | */ | |
285 | if (status & CEU_CEIER_VBP) { | |
286 | sh_mobile_ceu_soft_reset(pcdev); | |
287 | ret = -EIO; | |
288 | } | |
289 | ||
8be65dc5 | 290 | if (!pcdev->active) |
5cf93f1d | 291 | return ret; |
8be65dc5 | 292 | |
1edcc10d KM |
293 | if (V4L2_FIELD_INTERLACED_BT == pcdev->field) { |
294 | top1 = CDBYR; | |
295 | top2 = CDBCR; | |
296 | bottom1 = CDAYR; | |
297 | bottom2 = CDACR; | |
298 | } else { | |
299 | top1 = CDAYR; | |
300 | top2 = CDACR; | |
301 | bottom1 = CDBYR; | |
302 | bottom2 = CDBCR; | |
303 | } | |
304 | ||
d6db5bfe | 305 | phys_addr_top = vb2_dma_contig_plane_paddr(pcdev->active, 0); |
a616898d | 306 | |
1edcc10d KM |
307 | ceu_write(pcdev, top1, phys_addr_top); |
308 | if (V4L2_FIELD_NONE != pcdev->field) { | |
6a6c8786 | 309 | phys_addr_bottom = phys_addr_top + icd->user_width; |
1edcc10d | 310 | ceu_write(pcdev, bottom1, phys_addr_bottom); |
ccab8a29 | 311 | } |
8be65dc5 | 312 | |
760697be | 313 | switch (icd->current_fmt->host_fmt->fourcc) { |
8be65dc5 MD |
314 | case V4L2_PIX_FMT_NV12: |
315 | case V4L2_PIX_FMT_NV21: | |
9e4a56d2 MD |
316 | case V4L2_PIX_FMT_NV16: |
317 | case V4L2_PIX_FMT_NV61: | |
6a6c8786 GL |
318 | phys_addr_top += icd->user_width * |
319 | icd->user_height; | |
1edcc10d KM |
320 | ceu_write(pcdev, top2, phys_addr_top); |
321 | if (V4L2_FIELD_NONE != pcdev->field) { | |
322 | phys_addr_bottom = phys_addr_top + icd->user_width; | |
323 | ceu_write(pcdev, bottom2, phys_addr_bottom); | |
ccab8a29 | 324 | } |
0d3244d6 | 325 | } |
8be65dc5 | 326 | |
8be65dc5 | 327 | ceu_write(pcdev, CAPSR, 0x1); /* start capture */ |
5cf93f1d KM |
328 | |
329 | return ret; | |
0d3244d6 MD |
330 | } |
331 | ||
a616898d | 332 | static int sh_mobile_ceu_videobuf_prepare(struct vb2_buffer *vb) |
0d3244d6 | 333 | { |
a616898d | 334 | struct soc_camera_device *icd = container_of(vb->vb2_queue, struct soc_camera_device, vb2_vidq); |
0d3244d6 | 335 | struct sh_mobile_ceu_buffer *buf; |
760697be GL |
336 | int bytes_per_line = soc_mbus_bytes_per_line(icd->user_width, |
337 | icd->current_fmt->host_fmt); | |
a616898d | 338 | unsigned long size; |
0d3244d6 | 339 | |
760697be GL |
340 | if (bytes_per_line < 0) |
341 | return bytes_per_line; | |
342 | ||
a616898d | 343 | buf = to_ceu_vb(vb); |
0d3244d6 | 344 | |
a616898d GL |
345 | dev_dbg(icd->dev.parent, "%s (vb=0x%p) 0x%p %lu\n", __func__, |
346 | vb, vb2_plane_vaddr(vb, 0), vb2_get_plane_payload(vb, 0)); | |
0d3244d6 MD |
347 | |
348 | /* Added list head initialization on alloc */ | |
a616898d | 349 | WARN(!list_empty(&buf->queue), "Buffer %p on queue!\n", vb); |
0d3244d6 MD |
350 | |
351 | #ifdef DEBUG | |
5d28d525 GL |
352 | /* |
353 | * This can be useful if you want to see if we actually fill | |
354 | * the buffer with something | |
355 | */ | |
a616898d GL |
356 | if (vb2_plane_vaddr(vb, 0)) |
357 | memset(vb2_plane_vaddr(vb, 0), 0xaa, vb2_get_plane_payload(vb, 0)); | |
0d3244d6 MD |
358 | #endif |
359 | ||
360 | BUG_ON(NULL == icd->current_fmt); | |
361 | ||
a616898d | 362 | size = icd->user_height * bytes_per_line; |
0d3244d6 | 363 | |
a616898d GL |
364 | if (vb2_plane_size(vb, 0) < size) { |
365 | dev_err(icd->dev.parent, "Buffer too small (%lu < %lu)\n", | |
366 | vb2_plane_size(vb, 0), size); | |
367 | return -ENOBUFS; | |
0d3244d6 MD |
368 | } |
369 | ||
a616898d | 370 | vb2_set_plane_payload(vb, 0, size); |
0d3244d6 MD |
371 | |
372 | return 0; | |
0d3244d6 MD |
373 | } |
374 | ||
a616898d | 375 | static void sh_mobile_ceu_videobuf_queue(struct vb2_buffer *vb) |
0d3244d6 | 376 | { |
a616898d | 377 | struct soc_camera_device *icd = container_of(vb->vb2_queue, struct soc_camera_device, vb2_vidq); |
0d3244d6 MD |
378 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); |
379 | struct sh_mobile_ceu_dev *pcdev = ici->priv; | |
a616898d GL |
380 | struct sh_mobile_ceu_buffer *buf = to_ceu_vb(vb); |
381 | unsigned long flags; | |
0d3244d6 | 382 | |
a616898d GL |
383 | dev_dbg(icd->dev.parent, "%s (vb=0x%p) 0x%p %lu\n", __func__, |
384 | vb, vb2_plane_vaddr(vb, 0), vb2_get_plane_payload(vb, 0)); | |
0d3244d6 | 385 | |
a616898d GL |
386 | spin_lock_irqsave(&pcdev->lock, flags); |
387 | list_add_tail(&buf->queue, &pcdev->capture); | |
0d3244d6 MD |
388 | |
389 | if (!pcdev->active) { | |
5cf93f1d KM |
390 | /* |
391 | * Because there were no active buffer at this moment, | |
392 | * we are not interested in the return value of | |
393 | * sh_mobile_ceu_capture here. | |
394 | */ | |
0d3244d6 MD |
395 | pcdev->active = vb; |
396 | sh_mobile_ceu_capture(pcdev); | |
397 | } | |
a616898d | 398 | spin_unlock_irqrestore(&pcdev->lock, flags); |
0d3244d6 MD |
399 | } |
400 | ||
a616898d | 401 | static void sh_mobile_ceu_videobuf_release(struct vb2_buffer *vb) |
0d3244d6 | 402 | { |
a616898d | 403 | struct soc_camera_device *icd = container_of(vb->vb2_queue, struct soc_camera_device, vb2_vidq); |
cca0e549 | 404 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); |
a616898d | 405 | struct sh_mobile_ceu_buffer *buf = to_ceu_vb(vb); |
cca0e549 GL |
406 | struct sh_mobile_ceu_dev *pcdev = ici->priv; |
407 | unsigned long flags; | |
408 | ||
409 | spin_lock_irqsave(&pcdev->lock, flags); | |
410 | ||
411 | if (pcdev->active == vb) { | |
412 | /* disable capture (release DMA buffer), reset */ | |
413 | ceu_write(pcdev, CAPSR, 1 << 16); | |
414 | pcdev->active = NULL; | |
415 | } | |
416 | ||
a616898d GL |
417 | /* Doesn't hurt also if the list is empty */ |
418 | list_del_init(&buf->queue); | |
cca0e549 GL |
419 | |
420 | spin_unlock_irqrestore(&pcdev->lock, flags); | |
a616898d | 421 | } |
cca0e549 | 422 | |
a616898d GL |
423 | static int sh_mobile_ceu_videobuf_init(struct vb2_buffer *vb) |
424 | { | |
425 | /* This is for locking debugging only */ | |
426 | INIT_LIST_HEAD(&to_ceu_vb(vb)->queue); | |
427 | return 0; | |
0d3244d6 MD |
428 | } |
429 | ||
a616898d GL |
430 | static struct vb2_ops sh_mobile_ceu_videobuf_ops = { |
431 | .queue_setup = sh_mobile_ceu_videobuf_setup, | |
432 | .buf_prepare = sh_mobile_ceu_videobuf_prepare, | |
433 | .buf_queue = sh_mobile_ceu_videobuf_queue, | |
434 | .buf_cleanup = sh_mobile_ceu_videobuf_release, | |
435 | .buf_init = sh_mobile_ceu_videobuf_init, | |
436 | .wait_prepare = soc_camera_unlock, | |
437 | .wait_finish = soc_camera_lock, | |
0d3244d6 MD |
438 | }; |
439 | ||
440 | static irqreturn_t sh_mobile_ceu_irq(int irq, void *data) | |
441 | { | |
442 | struct sh_mobile_ceu_dev *pcdev = data; | |
a616898d GL |
443 | struct vb2_buffer *vb; |
444 | int ret; | |
0d3244d6 | 445 | |
a616898d | 446 | spin_lock(&pcdev->lock); |
0d3244d6 MD |
447 | |
448 | vb = pcdev->active; | |
cca0e549 GL |
449 | if (!vb) |
450 | /* Stale interrupt from a released buffer */ | |
451 | goto out; | |
452 | ||
a616898d | 453 | list_del_init(&to_ceu_vb(vb)->queue); |
0d3244d6 MD |
454 | |
455 | if (!list_empty(&pcdev->capture)) | |
a616898d GL |
456 | pcdev->active = &list_entry(pcdev->capture.next, |
457 | struct sh_mobile_ceu_buffer, queue)->vb; | |
0d3244d6 MD |
458 | else |
459 | pcdev->active = NULL; | |
460 | ||
a616898d GL |
461 | ret = sh_mobile_ceu_capture(pcdev); |
462 | do_gettimeofday(&vb->v4l2_buf.timestamp); | |
463 | if (!ret) { | |
464 | vb->v4l2_buf.field = pcdev->field; | |
465 | vb->v4l2_buf.sequence = pcdev->sequence++; | |
466 | } | |
467 | vb2_buffer_done(vb, ret < 0 ? VB2_BUF_STATE_ERROR : VB2_BUF_STATE_DONE); | |
cca0e549 GL |
468 | |
469 | out: | |
a616898d | 470 | spin_unlock(&pcdev->lock); |
0d3244d6 MD |
471 | |
472 | return IRQ_HANDLED; | |
473 | } | |
474 | ||
1c3bb743 | 475 | /* Called with .video_lock held */ |
0d3244d6 MD |
476 | static int sh_mobile_ceu_add_device(struct soc_camera_device *icd) |
477 | { | |
478 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); | |
479 | struct sh_mobile_ceu_dev *pcdev = ici->priv; | |
6ed7c038 | 480 | int ret; |
0d3244d6 | 481 | |
0d3244d6 | 482 | if (pcdev->icd) |
979ea1dd | 483 | return -EBUSY; |
0d3244d6 | 484 | |
0166b743 | 485 | dev_info(icd->dev.parent, |
0d3244d6 MD |
486 | "SuperH Mobile CEU driver attached to camera %d\n", |
487 | icd->devnum); | |
488 | ||
a79aebfc | 489 | pm_runtime_get_sync(ici->v4l2_dev.dev); |
40e2e092 | 490 | |
6ed7c038 GL |
491 | ret = sh_mobile_ceu_soft_reset(pcdev); |
492 | if (!ret) | |
493 | pcdev->icd = icd; | |
979ea1dd | 494 | |
6ed7c038 | 495 | return ret; |
0d3244d6 MD |
496 | } |
497 | ||
1c3bb743 | 498 | /* Called with .video_lock held */ |
0d3244d6 MD |
499 | static void sh_mobile_ceu_remove_device(struct soc_camera_device *icd) |
500 | { | |
501 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); | |
502 | struct sh_mobile_ceu_dev *pcdev = ici->priv; | |
51354cc3 | 503 | unsigned long flags; |
0d3244d6 MD |
504 | |
505 | BUG_ON(icd != pcdev->icd); | |
506 | ||
507 | /* disable capture, disable interrupts */ | |
508 | ceu_write(pcdev, CEIER, 0); | |
b1de7aeb | 509 | sh_mobile_ceu_soft_reset(pcdev); |
51354cc3 MD |
510 | |
511 | /* make sure active buffer is canceled */ | |
512 | spin_lock_irqsave(&pcdev->lock, flags); | |
513 | if (pcdev->active) { | |
a616898d GL |
514 | list_del_init(&to_ceu_vb(pcdev->active)->queue); |
515 | vb2_buffer_done(pcdev->active, VB2_BUF_STATE_ERROR); | |
51354cc3 MD |
516 | pcdev->active = NULL; |
517 | } | |
518 | spin_unlock_irqrestore(&pcdev->lock, flags); | |
519 | ||
a79aebfc | 520 | pm_runtime_put_sync(ici->v4l2_dev.dev); |
40e2e092 | 521 | |
0166b743 | 522 | dev_info(icd->dev.parent, |
0d3244d6 MD |
523 | "SuperH Mobile CEU driver detached from camera %d\n", |
524 | icd->devnum); | |
525 | ||
526 | pcdev->icd = NULL; | |
527 | } | |
528 | ||
961801bb GL |
529 | /* |
530 | * See chapter 29.4.12 "Capture Filter Control Register (CFLCR)" | |
531 | * in SH7722 Hardware Manual | |
532 | */ | |
533 | static unsigned int size_dst(unsigned int src, unsigned int scale) | |
534 | { | |
535 | unsigned int mant_pre = scale >> 12; | |
536 | if (!src || !scale) | |
537 | return src; | |
538 | return ((mant_pre + 2 * (src - 1)) / (2 * mant_pre) - 1) * | |
539 | mant_pre * 4096 / scale + 1; | |
540 | } | |
541 | ||
961801bb GL |
542 | static u16 calc_scale(unsigned int src, unsigned int *dst) |
543 | { | |
544 | u16 scale; | |
545 | ||
546 | if (src == *dst) | |
547 | return 0; | |
548 | ||
549 | scale = (src * 4096 / *dst) & ~7; | |
550 | ||
551 | while (scale > 4096 && size_dst(src, scale) < *dst) | |
552 | scale -= 8; | |
553 | ||
554 | *dst = size_dst(src, scale); | |
555 | ||
556 | return scale; | |
557 | } | |
558 | ||
559 | /* rect is guaranteed to not exceed the scaled camera rectangle */ | |
e622681d | 560 | static void sh_mobile_ceu_set_rect(struct soc_camera_device *icd) |
904078f1 GL |
561 | { |
562 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); | |
563 | struct sh_mobile_ceu_cam *cam = icd->host_priv; | |
564 | struct sh_mobile_ceu_dev *pcdev = ici->priv; | |
6a6c8786 GL |
565 | unsigned int height, width, cdwdr_width, in_width, in_height; |
566 | unsigned int left_offset, top_offset; | |
904078f1 GL |
567 | u32 camor; |
568 | ||
e622681d GL |
569 | dev_geo(icd->dev.parent, "Crop %ux%u@%u:%u\n", |
570 | icd->user_width, icd->user_height, cam->ceu_left, cam->ceu_top); | |
904078f1 | 571 | |
e622681d GL |
572 | left_offset = cam->ceu_left; |
573 | top_offset = cam->ceu_top; | |
904078f1 | 574 | |
e622681d | 575 | /* CEU cropping (CFSZR) is applied _after_ the scaling filter (CFLCR) */ |
904078f1 | 576 | if (pcdev->image_mode) { |
e622681d | 577 | in_width = cam->width; |
961801bb | 578 | if (!pcdev->is_16bit) { |
961801bb GL |
579 | in_width *= 2; |
580 | left_offset *= 2; | |
581 | } | |
e622681d GL |
582 | width = icd->user_width; |
583 | cdwdr_width = icd->user_width; | |
904078f1 | 584 | } else { |
e622681d | 585 | int bytes_per_line = soc_mbus_bytes_per_line(icd->user_width, |
760697be GL |
586 | icd->current_fmt->host_fmt); |
587 | unsigned int w_factor; | |
6a6c8786 | 588 | |
e622681d | 589 | width = icd->user_width; |
6a6c8786 | 590 | |
760697be GL |
591 | switch (icd->current_fmt->host_fmt->packing) { |
592 | case SOC_MBUS_PACKING_2X8_PADHI: | |
593 | w_factor = 2; | |
594 | break; | |
595 | default: | |
596 | w_factor = 1; | |
597 | } | |
961801bb | 598 | |
e622681d | 599 | in_width = cam->width * w_factor; |
760697be | 600 | left_offset = left_offset * w_factor; |
961801bb | 601 | |
760697be | 602 | if (bytes_per_line < 0) |
e622681d | 603 | cdwdr_width = icd->user_width; |
760697be GL |
604 | else |
605 | cdwdr_width = bytes_per_line; | |
904078f1 GL |
606 | } |
607 | ||
e622681d GL |
608 | height = icd->user_height; |
609 | in_height = cam->height; | |
1edcc10d | 610 | if (V4L2_FIELD_NONE != pcdev->field) { |
904078f1 | 611 | height /= 2; |
961801bb GL |
612 | in_height /= 2; |
613 | top_offset /= 2; | |
904078f1 GL |
614 | cdwdr_width *= 2; |
615 | } | |
616 | ||
b3b5020d GL |
617 | /* CSI2 special configuration */ |
618 | if (pcdev->pdata->csi2_dev) { | |
619 | in_width = ((in_width - 2) * 2); | |
620 | left_offset *= 2; | |
621 | } | |
622 | ||
6a6c8786 | 623 | /* Set CAMOR, CAPWR, CFSZR, take care of CDWDR */ |
904078f1 | 624 | camor = left_offset | (top_offset << 16); |
6a6c8786 GL |
625 | |
626 | dev_geo(icd->dev.parent, | |
627 | "CAMOR 0x%x, CAPWR 0x%x, CFSZR 0x%x, CDWDR 0x%x\n", camor, | |
628 | (in_height << 16) | in_width, (height << 16) | width, | |
629 | cdwdr_width); | |
630 | ||
904078f1 | 631 | ceu_write(pcdev, CAMOR, camor); |
961801bb | 632 | ceu_write(pcdev, CAPWR, (in_height << 16) | in_width); |
6a6c8786 | 633 | ceu_write(pcdev, CFSZR, (height << 16) | width); |
904078f1 GL |
634 | ceu_write(pcdev, CDWDR, cdwdr_width); |
635 | } | |
636 | ||
637 | static u32 capture_save_reset(struct sh_mobile_ceu_dev *pcdev) | |
638 | { | |
639 | u32 capsr = ceu_read(pcdev, CAPSR); | |
640 | ceu_write(pcdev, CAPSR, 1 << 16); /* reset, stop capture */ | |
641 | return capsr; | |
642 | } | |
643 | ||
644 | static void capture_restore(struct sh_mobile_ceu_dev *pcdev, u32 capsr) | |
645 | { | |
646 | unsigned long timeout = jiffies + 10 * HZ; | |
647 | ||
648 | /* | |
649 | * Wait until the end of the current frame. It can take a long time, | |
650 | * but if it has been aborted by a CAPSR reset, it shoule exit sooner. | |
651 | */ | |
652 | while ((ceu_read(pcdev, CSTSR) & 1) && time_before(jiffies, timeout)) | |
653 | msleep(1); | |
654 | ||
655 | if (time_after(jiffies, timeout)) { | |
656 | dev_err(pcdev->ici.v4l2_dev.dev, | |
657 | "Timeout waiting for frame end! Interface problem?\n"); | |
658 | return; | |
659 | } | |
660 | ||
661 | /* Wait until reset clears, this shall not hang... */ | |
662 | while (ceu_read(pcdev, CAPSR) & (1 << 16)) | |
663 | udelay(10); | |
664 | ||
665 | /* Anything to restore? */ | |
666 | if (capsr & ~(1 << 16)) | |
667 | ceu_write(pcdev, CAPSR, capsr); | |
668 | } | |
669 | ||
a616898d | 670 | /* Capture is not running, no interrupts, no locking needed */ |
0d3244d6 MD |
671 | static int sh_mobile_ceu_set_bus_param(struct soc_camera_device *icd, |
672 | __u32 pixfmt) | |
673 | { | |
674 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); | |
675 | struct sh_mobile_ceu_dev *pcdev = ici->priv; | |
904078f1 | 676 | int ret; |
0d3244d6 | 677 | unsigned long camera_flags, common_flags, value; |
904078f1 GL |
678 | int yuv_lineskip; |
679 | struct sh_mobile_ceu_cam *cam = icd->host_priv; | |
680 | u32 capsr = capture_save_reset(pcdev); | |
0d3244d6 MD |
681 | |
682 | camera_flags = icd->ops->query_bus_param(icd); | |
683 | common_flags = soc_camera_bus_param_compatible(camera_flags, | |
c354b400 | 684 | make_bus_param(pcdev)); |
0d3244d6 MD |
685 | if (!common_flags) |
686 | return -EINVAL; | |
687 | ||
85dc1cff KM |
688 | /* Make choises, based on platform preferences */ |
689 | if ((common_flags & SOCAM_HSYNC_ACTIVE_HIGH) && | |
690 | (common_flags & SOCAM_HSYNC_ACTIVE_LOW)) { | |
691 | if (pcdev->pdata->flags & SH_CEU_FLAG_HSYNC_LOW) | |
692 | common_flags &= ~SOCAM_HSYNC_ACTIVE_HIGH; | |
693 | else | |
694 | common_flags &= ~SOCAM_HSYNC_ACTIVE_LOW; | |
695 | } | |
696 | ||
697 | if ((common_flags & SOCAM_VSYNC_ACTIVE_HIGH) && | |
698 | (common_flags & SOCAM_VSYNC_ACTIVE_LOW)) { | |
699 | if (pcdev->pdata->flags & SH_CEU_FLAG_VSYNC_LOW) | |
700 | common_flags &= ~SOCAM_VSYNC_ACTIVE_HIGH; | |
701 | else | |
702 | common_flags &= ~SOCAM_VSYNC_ACTIVE_LOW; | |
703 | } | |
704 | ||
0d3244d6 MD |
705 | ret = icd->ops->set_bus_param(icd, common_flags); |
706 | if (ret < 0) | |
707 | return ret; | |
708 | ||
709 | switch (common_flags & SOCAM_DATAWIDTH_MASK) { | |
710 | case SOCAM_DATAWIDTH_8: | |
904078f1 | 711 | pcdev->is_16bit = 0; |
0d3244d6 MD |
712 | break; |
713 | case SOCAM_DATAWIDTH_16: | |
904078f1 | 714 | pcdev->is_16bit = 1; |
0d3244d6 MD |
715 | break; |
716 | default: | |
717 | return -EINVAL; | |
718 | } | |
719 | ||
720 | ceu_write(pcdev, CRCNTR, 0); | |
721 | ceu_write(pcdev, CRCMPR, 0); | |
722 | ||
8be65dc5 | 723 | value = 0x00000010; /* data fetch by default */ |
961801bb | 724 | yuv_lineskip = 0; |
8be65dc5 | 725 | |
760697be | 726 | switch (icd->current_fmt->host_fmt->fourcc) { |
8be65dc5 MD |
727 | case V4L2_PIX_FMT_NV12: |
728 | case V4L2_PIX_FMT_NV21: | |
729 | yuv_lineskip = 1; /* skip for NV12/21, no skip for NV16/61 */ | |
9e4a56d2 MD |
730 | /* fall-through */ |
731 | case V4L2_PIX_FMT_NV16: | |
732 | case V4L2_PIX_FMT_NV61: | |
760697be | 733 | switch (cam->code) { |
ace6e979 | 734 | case V4L2_MBUS_FMT_UYVY8_2X8: |
8be65dc5 MD |
735 | value = 0x00000000; /* Cb0, Y0, Cr0, Y1 */ |
736 | break; | |
ace6e979 | 737 | case V4L2_MBUS_FMT_VYUY8_2X8: |
8be65dc5 MD |
738 | value = 0x00000100; /* Cr0, Y0, Cb0, Y1 */ |
739 | break; | |
ace6e979 | 740 | case V4L2_MBUS_FMT_YUYV8_2X8: |
8be65dc5 MD |
741 | value = 0x00000200; /* Y0, Cb0, Y1, Cr0 */ |
742 | break; | |
ace6e979 | 743 | case V4L2_MBUS_FMT_YVYU8_2X8: |
8be65dc5 MD |
744 | value = 0x00000300; /* Y0, Cr0, Y1, Cb0 */ |
745 | break; | |
746 | default: | |
747 | BUG(); | |
748 | } | |
749 | } | |
750 | ||
760697be GL |
751 | if (icd->current_fmt->host_fmt->fourcc == V4L2_PIX_FMT_NV21 || |
752 | icd->current_fmt->host_fmt->fourcc == V4L2_PIX_FMT_NV61) | |
9e4a56d2 | 753 | value ^= 0x00000100; /* swap U, V to change from NV1x->NVx1 */ |
8be65dc5 | 754 | |
7a1a8164 MD |
755 | value |= common_flags & SOCAM_VSYNC_ACTIVE_LOW ? 1 << 1 : 0; |
756 | value |= common_flags & SOCAM_HSYNC_ACTIVE_LOW ? 1 << 0 : 0; | |
904078f1 | 757 | value |= pcdev->is_16bit ? 1 << 12 : 0; |
b3b5020d GL |
758 | |
759 | /* CSI2 mode */ | |
760 | if (pcdev->pdata->csi2_dev) | |
761 | value |= 3 << 12; | |
762 | ||
0d3244d6 MD |
763 | ceu_write(pcdev, CAMCR, value); |
764 | ||
765 | ceu_write(pcdev, CAPCR, 0x00300000); | |
1edcc10d KM |
766 | |
767 | switch (pcdev->field) { | |
768 | case V4L2_FIELD_INTERLACED_TB: | |
769 | value = 0x101; | |
770 | break; | |
771 | case V4L2_FIELD_INTERLACED_BT: | |
772 | value = 0x102; | |
773 | break; | |
774 | default: | |
775 | value = 0; | |
776 | break; | |
777 | } | |
778 | ceu_write(pcdev, CAIFR, value); | |
0d3244d6 | 779 | |
e622681d | 780 | sh_mobile_ceu_set_rect(icd); |
0d3244d6 MD |
781 | mdelay(1); |
782 | ||
e622681d | 783 | dev_geo(icd->dev.parent, "CFLCR 0x%x\n", pcdev->cflcr); |
961801bb | 784 | ceu_write(pcdev, CFLCR, pcdev->cflcr); |
dd54203b | 785 | |
5d28d525 GL |
786 | /* |
787 | * A few words about byte order (observed in Big Endian mode) | |
dd54203b MD |
788 | * |
789 | * In data fetch mode bytes are received in chunks of 8 bytes. | |
790 | * D0, D1, D2, D3, D4, D5, D6, D7 (D0 received first) | |
791 | * | |
792 | * The data is however by default written to memory in reverse order: | |
793 | * D7, D6, D5, D4, D3, D2, D1, D0 (D7 written to lowest byte) | |
794 | * | |
795 | * The lowest three bits of CDOCR allows us to do swapping, | |
2c0a072e MD |
796 | * using 7 we swap the data bytes to match the incoming order: |
797 | * D0, D1, D2, D3, D4, D5, D6, D7 | |
dd54203b | 798 | */ |
8be65dc5 MD |
799 | value = 0x00000017; |
800 | if (yuv_lineskip) | |
801 | value &= ~0x00000010; /* convert 4:2:2 -> 4:2:0 */ | |
802 | ||
803 | ceu_write(pcdev, CDOCR, value); | |
0d3244d6 MD |
804 | ceu_write(pcdev, CFWCR, 0); /* keep "datafetch firewall" disabled */ |
805 | ||
6a6c8786 | 806 | dev_dbg(icd->dev.parent, "S_FMT successful for %c%c%c%c %ux%u\n", |
904078f1 GL |
807 | pixfmt & 0xff, (pixfmt >> 8) & 0xff, |
808 | (pixfmt >> 16) & 0xff, (pixfmt >> 24) & 0xff, | |
6a6c8786 | 809 | icd->user_width, icd->user_height); |
904078f1 GL |
810 | |
811 | capture_restore(pcdev, capsr); | |
812 | ||
0d3244d6 | 813 | /* not in bundle mode: skip CBDSR, CDAYR2, CDACR2, CDBYR2, CDBCR2 */ |
0d3244d6 MD |
814 | return 0; |
815 | } | |
816 | ||
760697be GL |
817 | static int sh_mobile_ceu_try_bus_param(struct soc_camera_device *icd, |
818 | unsigned char buswidth) | |
0d3244d6 MD |
819 | { |
820 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); | |
821 | struct sh_mobile_ceu_dev *pcdev = ici->priv; | |
822 | unsigned long camera_flags, common_flags; | |
823 | ||
824 | camera_flags = icd->ops->query_bus_param(icd); | |
825 | common_flags = soc_camera_bus_param_compatible(camera_flags, | |
c354b400 | 826 | make_bus_param(pcdev)); |
760697be GL |
827 | if (!common_flags || buswidth > 16 || |
828 | (buswidth > 8 && !(common_flags & SOCAM_DATAWIDTH_16))) | |
0d3244d6 MD |
829 | return -EINVAL; |
830 | ||
831 | return 0; | |
832 | } | |
833 | ||
760697be | 834 | static const struct soc_mbus_pixelfmt sh_mobile_ceu_formats[] = { |
9e4a56d2 | 835 | { |
760697be GL |
836 | .fourcc = V4L2_PIX_FMT_NV12, |
837 | .name = "NV12", | |
838 | .bits_per_sample = 12, | |
839 | .packing = SOC_MBUS_PACKING_NONE, | |
840 | .order = SOC_MBUS_ORDER_LE, | |
841 | }, { | |
842 | .fourcc = V4L2_PIX_FMT_NV21, | |
843 | .name = "NV21", | |
844 | .bits_per_sample = 12, | |
845 | .packing = SOC_MBUS_PACKING_NONE, | |
846 | .order = SOC_MBUS_ORDER_LE, | |
847 | }, { | |
848 | .fourcc = V4L2_PIX_FMT_NV16, | |
849 | .name = "NV16", | |
850 | .bits_per_sample = 16, | |
851 | .packing = SOC_MBUS_PACKING_NONE, | |
852 | .order = SOC_MBUS_ORDER_LE, | |
853 | }, { | |
854 | .fourcc = V4L2_PIX_FMT_NV61, | |
855 | .name = "NV61", | |
856 | .bits_per_sample = 16, | |
857 | .packing = SOC_MBUS_PACKING_NONE, | |
858 | .order = SOC_MBUS_ORDER_LE, | |
9e4a56d2 | 859 | }, |
8be65dc5 MD |
860 | }; |
861 | ||
760697be GL |
862 | /* This will be corrected as we get more formats */ |
863 | static bool sh_mobile_ceu_packing_supported(const struct soc_mbus_pixelfmt *fmt) | |
864 | { | |
865 | return fmt->packing == SOC_MBUS_PACKING_NONE || | |
866 | (fmt->bits_per_sample == 8 && | |
867 | fmt->packing == SOC_MBUS_PACKING_2X8_PADHI) || | |
868 | (fmt->bits_per_sample > 8 && | |
869 | fmt->packing == SOC_MBUS_PACKING_EXTEND16); | |
870 | } | |
871 | ||
e622681d GL |
872 | static int client_g_rect(struct v4l2_subdev *sd, struct v4l2_rect *rect); |
873 | ||
3805f201 | 874 | static int sh_mobile_ceu_get_formats(struct soc_camera_device *icd, unsigned int idx, |
9414de39 MD |
875 | struct soc_camera_format_xlate *xlate) |
876 | { | |
760697be | 877 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
6a6c8786 | 878 | struct device *dev = icd->dev.parent; |
b3b5020d GL |
879 | struct soc_camera_host *ici = to_soc_camera_host(dev); |
880 | struct sh_mobile_ceu_dev *pcdev = ici->priv; | |
8be65dc5 | 881 | int ret, k, n; |
9414de39 | 882 | int formats = 0; |
904078f1 | 883 | struct sh_mobile_ceu_cam *cam; |
760697be GL |
884 | enum v4l2_mbus_pixelcode code; |
885 | const struct soc_mbus_pixelfmt *fmt; | |
9414de39 | 886 | |
760697be GL |
887 | ret = v4l2_subdev_call(sd, video, enum_mbus_fmt, idx, &code); |
888 | if (ret < 0) | |
889 | /* No more formats */ | |
890 | return 0; | |
891 | ||
892 | fmt = soc_mbus_get_fmtdesc(code); | |
893 | if (!fmt) { | |
b3b5020d | 894 | dev_err(dev, "Invalid format code #%u: %d\n", idx, code); |
760697be GL |
895 | return -EINVAL; |
896 | } | |
897 | ||
b3b5020d GL |
898 | if (!pcdev->pdata->csi2_dev) { |
899 | ret = sh_mobile_ceu_try_bus_param(icd, fmt->bits_per_sample); | |
900 | if (ret < 0) | |
901 | return 0; | |
902 | } | |
9414de39 | 903 | |
904078f1 | 904 | if (!icd->host_priv) { |
e622681d GL |
905 | struct v4l2_mbus_framefmt mf; |
906 | struct v4l2_rect rect; | |
e622681d GL |
907 | int shift = 0; |
908 | ||
909 | /* FIXME: subwindow is lost between close / open */ | |
910 | ||
911 | /* Cache current client geometry */ | |
912 | ret = client_g_rect(sd, &rect); | |
913 | if (ret < 0) | |
914 | return ret; | |
915 | ||
916 | /* First time */ | |
917 | ret = v4l2_subdev_call(sd, video, g_mbus_fmt, &mf); | |
918 | if (ret < 0) | |
919 | return ret; | |
920 | ||
921 | while ((mf.width > 2560 || mf.height > 1920) && shift < 4) { | |
922 | /* Try 2560x1920, 1280x960, 640x480, 320x240 */ | |
923 | mf.width = 2560 >> shift; | |
924 | mf.height = 1920 >> shift; | |
24105ebc | 925 | ret = v4l2_device_call_until_err(sd->v4l2_dev, (long)icd, video, |
b3b5020d | 926 | s_mbus_fmt, &mf); |
e622681d GL |
927 | if (ret < 0) |
928 | return ret; | |
929 | shift++; | |
930 | } | |
931 | ||
932 | if (shift == 4) { | |
933 | dev_err(dev, "Failed to configure the client below %ux%x\n", | |
934 | mf.width, mf.height); | |
935 | return -EIO; | |
936 | } | |
937 | ||
938 | dev_geo(dev, "camera fmt %ux%u\n", mf.width, mf.height); | |
939 | ||
904078f1 GL |
940 | cam = kzalloc(sizeof(*cam), GFP_KERNEL); |
941 | if (!cam) | |
942 | return -ENOMEM; | |
943 | ||
e622681d GL |
944 | /* We are called with current camera crop, initialise subrect with it */ |
945 | cam->rect = rect; | |
946 | cam->subrect = rect; | |
947 | ||
948 | cam->width = mf.width; | |
949 | cam->height = mf.height; | |
950 | ||
951 | cam->width = mf.width; | |
952 | cam->height = mf.height; | |
953 | ||
904078f1 GL |
954 | icd->host_priv = cam; |
955 | } else { | |
956 | cam = icd->host_priv; | |
957 | } | |
958 | ||
c8329acc GL |
959 | /* Beginning of a pass */ |
960 | if (!idx) | |
904078f1 | 961 | cam->extra_fmt = NULL; |
c8329acc | 962 | |
760697be | 963 | switch (code) { |
ace6e979 GL |
964 | case V4L2_MBUS_FMT_UYVY8_2X8: |
965 | case V4L2_MBUS_FMT_VYUY8_2X8: | |
966 | case V4L2_MBUS_FMT_YUYV8_2X8: | |
967 | case V4L2_MBUS_FMT_YVYU8_2X8: | |
904078f1 | 968 | if (cam->extra_fmt) |
760697be | 969 | break; |
c8329acc GL |
970 | |
971 | /* | |
972 | * Our case is simple so far: for any of the above four camera | |
973 | * formats we add all our four synthesized NV* formats, so, | |
974 | * just marking the device with a single flag suffices. If | |
975 | * the format generation rules are more complex, you would have | |
976 | * to actually hang your already added / counted formats onto | |
977 | * the host_priv pointer and check whether the format you're | |
978 | * going to add now is already there. | |
979 | */ | |
760697be | 980 | cam->extra_fmt = sh_mobile_ceu_formats; |
c8329acc | 981 | |
8be65dc5 MD |
982 | n = ARRAY_SIZE(sh_mobile_ceu_formats); |
983 | formats += n; | |
984 | for (k = 0; xlate && k < n; k++) { | |
760697be GL |
985 | xlate->host_fmt = &sh_mobile_ceu_formats[k]; |
986 | xlate->code = code; | |
8be65dc5 | 987 | xlate++; |
760697be GL |
988 | dev_dbg(dev, "Providing format %s using code %d\n", |
989 | sh_mobile_ceu_formats[k].name, code); | |
8be65dc5 | 990 | } |
760697be | 991 | break; |
9414de39 | 992 | default: |
760697be GL |
993 | if (!sh_mobile_ceu_packing_supported(fmt)) |
994 | return 0; | |
995 | } | |
996 | ||
997 | /* Generic pass-through */ | |
998 | formats++; | |
999 | if (xlate) { | |
1000 | xlate->host_fmt = fmt; | |
1001 | xlate->code = code; | |
1002 | xlate++; | |
1003 | dev_dbg(dev, "Providing format %s in pass-through mode\n", | |
e53a4805 | 1004 | fmt->name); |
9414de39 MD |
1005 | } |
1006 | ||
1007 | return formats; | |
1008 | } | |
1009 | ||
904078f1 GL |
1010 | static void sh_mobile_ceu_put_formats(struct soc_camera_device *icd) |
1011 | { | |
1012 | kfree(icd->host_priv); | |
1013 | icd->host_priv = NULL; | |
1014 | } | |
1015 | ||
961801bb | 1016 | /* Check if any dimension of r1 is smaller than respective one of r2 */ |
904078f1 GL |
1017 | static bool is_smaller(struct v4l2_rect *r1, struct v4l2_rect *r2) |
1018 | { | |
1019 | return r1->width < r2->width || r1->height < r2->height; | |
1020 | } | |
1021 | ||
961801bb GL |
1022 | /* Check if r1 fails to cover r2 */ |
1023 | static bool is_inside(struct v4l2_rect *r1, struct v4l2_rect *r2) | |
1024 | { | |
1025 | return r1->left > r2->left || r1->top > r2->top || | |
1026 | r1->left + r1->width < r2->left + r2->width || | |
1027 | r1->top + r1->height < r2->top + r2->height; | |
1028 | } | |
1029 | ||
6a6c8786 GL |
1030 | static unsigned int scale_down(unsigned int size, unsigned int scale) |
1031 | { | |
1032 | return (size * 4096 + scale / 2) / scale; | |
1033 | } | |
1034 | ||
6a6c8786 GL |
1035 | static unsigned int calc_generic_scale(unsigned int input, unsigned int output) |
1036 | { | |
1037 | return (input * 4096 + output / 2) / output; | |
1038 | } | |
1039 | ||
e622681d | 1040 | /* Get and store current client crop */ |
6a6c8786 GL |
1041 | static int client_g_rect(struct v4l2_subdev *sd, struct v4l2_rect *rect) |
1042 | { | |
1043 | struct v4l2_crop crop; | |
1044 | struct v4l2_cropcap cap; | |
1045 | int ret; | |
1046 | ||
1047 | crop.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; | |
1048 | ||
1049 | ret = v4l2_subdev_call(sd, video, g_crop, &crop); | |
1050 | if (!ret) { | |
1051 | *rect = crop.c; | |
1052 | return ret; | |
1053 | } | |
1054 | ||
1055 | /* Camera driver doesn't support .g_crop(), assume default rectangle */ | |
1056 | cap.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; | |
1057 | ||
1058 | ret = v4l2_subdev_call(sd, video, cropcap, &cap); | |
e622681d GL |
1059 | if (!ret) |
1060 | *rect = cap.defrect; | |
6a6c8786 GL |
1061 | |
1062 | return ret; | |
1063 | } | |
1064 | ||
e622681d GL |
1065 | /* Client crop has changed, update our sub-rectangle to remain within the area */ |
1066 | static void update_subrect(struct sh_mobile_ceu_cam *cam) | |
1067 | { | |
1068 | struct v4l2_rect *rect = &cam->rect, *subrect = &cam->subrect; | |
1069 | ||
1070 | if (rect->width < subrect->width) | |
1071 | subrect->width = rect->width; | |
1072 | ||
1073 | if (rect->height < subrect->height) | |
1074 | subrect->height = rect->height; | |
1075 | ||
1076 | if (rect->left > subrect->left) | |
1077 | subrect->left = rect->left; | |
1078 | else if (rect->left + rect->width > | |
1079 | subrect->left + subrect->width) | |
1080 | subrect->left = rect->left + rect->width - | |
1081 | subrect->width; | |
1082 | ||
1083 | if (rect->top > subrect->top) | |
1084 | subrect->top = rect->top; | |
1085 | else if (rect->top + rect->height > | |
1086 | subrect->top + subrect->height) | |
1087 | subrect->top = rect->top + rect->height - | |
1088 | subrect->height; | |
1089 | } | |
1090 | ||
961801bb | 1091 | /* |
6a6c8786 | 1092 | * The common for both scaling and cropping iterative approach is: |
961801bb GL |
1093 | * 1. try if the client can produce exactly what requested by the user |
1094 | * 2. if (1) failed, try to double the client image until we get one big enough | |
1095 | * 3. if (2) failed, try to request the maximum image | |
1096 | */ | |
e622681d | 1097 | static int client_s_crop(struct soc_camera_device *icd, struct v4l2_crop *crop, |
6a6c8786 | 1098 | struct v4l2_crop *cam_crop) |
09e231b3 | 1099 | { |
e622681d | 1100 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
6a6c8786 GL |
1101 | struct v4l2_rect *rect = &crop->c, *cam_rect = &cam_crop->c; |
1102 | struct device *dev = sd->v4l2_dev->dev; | |
e622681d | 1103 | struct sh_mobile_ceu_cam *cam = icd->host_priv; |
6a6c8786 | 1104 | struct v4l2_cropcap cap; |
904078f1 | 1105 | int ret; |
6a6c8786 | 1106 | unsigned int width, height; |
904078f1 | 1107 | |
6a6c8786 GL |
1108 | v4l2_subdev_call(sd, video, s_crop, crop); |
1109 | ret = client_g_rect(sd, cam_rect); | |
1110 | if (ret < 0) | |
1111 | return ret; | |
961801bb | 1112 | |
6a6c8786 GL |
1113 | /* |
1114 | * Now cam_crop contains the current camera input rectangle, and it must | |
1115 | * be within camera cropcap bounds | |
1116 | */ | |
1117 | if (!memcmp(rect, cam_rect, sizeof(*rect))) { | |
1118 | /* Even if camera S_CROP failed, but camera rectangle matches */ | |
e26b3144 | 1119 | dev_dbg(dev, "Camera S_CROP successful for %dx%d@%d:%d\n", |
6a6c8786 | 1120 | rect->width, rect->height, rect->left, rect->top); |
e622681d | 1121 | cam->rect = *cam_rect; |
6a6c8786 | 1122 | return 0; |
904078f1 GL |
1123 | } |
1124 | ||
6a6c8786 | 1125 | /* Try to fix cropping, that camera hasn't managed to set */ |
e26b3144 | 1126 | dev_geo(dev, "Fix camera S_CROP for %dx%d@%d:%d to %dx%d@%d:%d\n", |
6a6c8786 | 1127 | cam_rect->width, cam_rect->height, |
08590b96 | 1128 | cam_rect->left, cam_rect->top, |
6a6c8786 GL |
1129 | rect->width, rect->height, rect->left, rect->top); |
1130 | ||
1131 | /* We need sensor maximum rectangle */ | |
1132 | ret = v4l2_subdev_call(sd, video, cropcap, &cap); | |
1133 | if (ret < 0) | |
1134 | return ret; | |
1135 | ||
e622681d | 1136 | /* Put user requested rectangle within sensor bounds */ |
6a6c8786 GL |
1137 | soc_camera_limit_side(&rect->left, &rect->width, cap.bounds.left, 2, |
1138 | cap.bounds.width); | |
1139 | soc_camera_limit_side(&rect->top, &rect->height, cap.bounds.top, 4, | |
1140 | cap.bounds.height); | |
904078f1 GL |
1141 | |
1142 | /* | |
1143 | * Popular special case - some cameras can only handle fixed sizes like | |
1144 | * QVGA, VGA,... Take care to avoid infinite loop. | |
1145 | */ | |
6a6c8786 GL |
1146 | width = max(cam_rect->width, 2); |
1147 | height = max(cam_rect->height, 2); | |
1148 | ||
e622681d GL |
1149 | /* |
1150 | * Loop as long as sensor is not covering the requested rectangle and | |
1151 | * is still within its bounds | |
1152 | */ | |
6a6c8786 GL |
1153 | while (!ret && (is_smaller(cam_rect, rect) || |
1154 | is_inside(cam_rect, rect)) && | |
1155 | (cap.bounds.width > width || cap.bounds.height > height)) { | |
961801bb GL |
1156 | |
1157 | width *= 2; | |
1158 | height *= 2; | |
6a6c8786 | 1159 | |
08590b96 GL |
1160 | cam_rect->width = width; |
1161 | cam_rect->height = height; | |
904078f1 | 1162 | |
6a6c8786 GL |
1163 | /* |
1164 | * We do not know what capabilities the camera has to set up | |
1165 | * left and top borders. We could try to be smarter in iterating | |
1166 | * them, e.g., if camera current left is to the right of the | |
1167 | * target left, set it to the middle point between the current | |
1168 | * left and minimum left. But that would add too much | |
1169 | * complexity: we would have to iterate each border separately. | |
e622681d | 1170 | * Instead we just drop to the left and top bounds. |
6a6c8786 GL |
1171 | */ |
1172 | if (cam_rect->left > rect->left) | |
1173 | cam_rect->left = cap.bounds.left; | |
961801bb | 1174 | |
6a6c8786 GL |
1175 | if (cam_rect->left + cam_rect->width < rect->left + rect->width) |
1176 | cam_rect->width = rect->left + rect->width - | |
08590b96 | 1177 | cam_rect->left; |
961801bb | 1178 | |
6a6c8786 GL |
1179 | if (cam_rect->top > rect->top) |
1180 | cam_rect->top = cap.bounds.top; | |
961801bb | 1181 | |
6a6c8786 GL |
1182 | if (cam_rect->top + cam_rect->height < rect->top + rect->height) |
1183 | cam_rect->height = rect->top + rect->height - | |
08590b96 | 1184 | cam_rect->top; |
961801bb | 1185 | |
6a6c8786 GL |
1186 | v4l2_subdev_call(sd, video, s_crop, cam_crop); |
1187 | ret = client_g_rect(sd, cam_rect); | |
e26b3144 | 1188 | dev_geo(dev, "Camera S_CROP %d for %dx%d@%d:%d\n", ret, |
6a6c8786 | 1189 | cam_rect->width, cam_rect->height, |
08590b96 | 1190 | cam_rect->left, cam_rect->top); |
904078f1 GL |
1191 | } |
1192 | ||
6a6c8786 GL |
1193 | /* S_CROP must not modify the rectangle */ |
1194 | if (is_smaller(cam_rect, rect) || is_inside(cam_rect, rect)) { | |
904078f1 GL |
1195 | /* |
1196 | * The camera failed to configure a suitable cropping, | |
1197 | * we cannot use the current rectangle, set to max | |
1198 | */ | |
6a6c8786 GL |
1199 | *cam_rect = cap.bounds; |
1200 | v4l2_subdev_call(sd, video, s_crop, cam_crop); | |
1201 | ret = client_g_rect(sd, cam_rect); | |
e26b3144 | 1202 | dev_geo(dev, "Camera S_CROP %d for max %dx%d@%d:%d\n", ret, |
6a6c8786 | 1203 | cam_rect->width, cam_rect->height, |
08590b96 | 1204 | cam_rect->left, cam_rect->top); |
904078f1 GL |
1205 | } |
1206 | ||
e622681d GL |
1207 | if (!ret) { |
1208 | cam->rect = *cam_rect; | |
1209 | update_subrect(cam); | |
6a6c8786 GL |
1210 | } |
1211 | ||
e622681d | 1212 | return ret; |
6a6c8786 GL |
1213 | } |
1214 | ||
e622681d | 1215 | /* Iterative s_mbus_fmt, also updates cached client crop on success */ |
760697be GL |
1216 | static int client_s_fmt(struct soc_camera_device *icd, |
1217 | struct v4l2_mbus_framefmt *mf, bool ceu_can_scale) | |
6a6c8786 | 1218 | { |
e622681d | 1219 | struct sh_mobile_ceu_cam *cam = icd->host_priv; |
6a6c8786 GL |
1220 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
1221 | struct device *dev = icd->dev.parent; | |
760697be | 1222 | unsigned int width = mf->width, height = mf->height, tmp_w, tmp_h; |
6a6c8786 GL |
1223 | unsigned int max_width, max_height; |
1224 | struct v4l2_cropcap cap; | |
1225 | int ret; | |
1226 | ||
24105ebc | 1227 | ret = v4l2_device_call_until_err(sd->v4l2_dev, (long)icd, video, |
b3b5020d | 1228 | s_mbus_fmt, mf); |
e622681d GL |
1229 | if (ret < 0) |
1230 | return ret; | |
1231 | ||
1232 | dev_geo(dev, "camera scaled to %ux%u\n", mf->width, mf->height); | |
1233 | ||
1234 | if ((width == mf->width && height == mf->height) || !ceu_can_scale) | |
1235 | goto update_cache; | |
1236 | ||
6a6c8786 GL |
1237 | cap.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; |
1238 | ||
1239 | ret = v4l2_subdev_call(sd, video, cropcap, &cap); | |
1240 | if (ret < 0) | |
1241 | return ret; | |
1242 | ||
1243 | max_width = min(cap.bounds.width, 2560); | |
1244 | max_height = min(cap.bounds.height, 1920); | |
1245 | ||
6a6c8786 | 1246 | /* Camera set a format, but geometry is not precise, try to improve */ |
760697be GL |
1247 | tmp_w = mf->width; |
1248 | tmp_h = mf->height; | |
6a6c8786 GL |
1249 | |
1250 | /* width <= max_width && height <= max_height - guaranteed by try_fmt */ | |
1251 | while ((width > tmp_w || height > tmp_h) && | |
1252 | tmp_w < max_width && tmp_h < max_height) { | |
1253 | tmp_w = min(2 * tmp_w, max_width); | |
1254 | tmp_h = min(2 * tmp_h, max_height); | |
760697be GL |
1255 | mf->width = tmp_w; |
1256 | mf->height = tmp_h; | |
24105ebc | 1257 | ret = v4l2_device_call_until_err(sd->v4l2_dev, (long)icd, video, |
b3b5020d | 1258 | s_mbus_fmt, mf); |
6a6c8786 | 1259 | dev_geo(dev, "Camera scaled to %ux%u\n", |
760697be | 1260 | mf->width, mf->height); |
6a6c8786 GL |
1261 | if (ret < 0) { |
1262 | /* This shouldn't happen */ | |
1263 | dev_err(dev, "Client failed to set format: %d\n", ret); | |
1264 | return ret; | |
1265 | } | |
1266 | } | |
1267 | ||
e622681d GL |
1268 | update_cache: |
1269 | /* Update cache */ | |
1270 | ret = client_g_rect(sd, &cam->rect); | |
1271 | if (ret < 0) | |
1272 | return ret; | |
1273 | ||
1274 | update_subrect(cam); | |
1275 | ||
6a6c8786 GL |
1276 | return 0; |
1277 | } | |
1278 | ||
1279 | /** | |
e622681d GL |
1280 | * @width - on output: user width, mapped back to input |
1281 | * @height - on output: user height, mapped back to input | |
1282 | * @mf - in- / output camera output window | |
6a6c8786 | 1283 | */ |
e622681d GL |
1284 | static int client_scale(struct soc_camera_device *icd, |
1285 | struct v4l2_mbus_framefmt *mf, | |
1286 | unsigned int *width, unsigned int *height, | |
1287 | bool ceu_can_scale) | |
6a6c8786 | 1288 | { |
6a6c8786 GL |
1289 | struct sh_mobile_ceu_cam *cam = icd->host_priv; |
1290 | struct device *dev = icd->dev.parent; | |
760697be | 1291 | struct v4l2_mbus_framefmt mf_tmp = *mf; |
6a6c8786 GL |
1292 | unsigned int scale_h, scale_v; |
1293 | int ret; | |
1294 | ||
e622681d GL |
1295 | /* |
1296 | * 5. Apply iterative camera S_FMT for camera user window (also updates | |
1297 | * client crop cache and the imaginary sub-rectangle). | |
1298 | */ | |
760697be | 1299 | ret = client_s_fmt(icd, &mf_tmp, ceu_can_scale); |
6a6c8786 GL |
1300 | if (ret < 0) |
1301 | return ret; | |
1302 | ||
1303 | dev_geo(dev, "5: camera scaled to %ux%u\n", | |
760697be | 1304 | mf_tmp.width, mf_tmp.height); |
6a6c8786 GL |
1305 | |
1306 | /* 6. Retrieve camera output window (g_fmt) */ | |
1307 | ||
760697be | 1308 | /* unneeded - it is already in "mf_tmp" */ |
6a6c8786 | 1309 | |
e622681d GL |
1310 | /* 7. Calculate new client scales. */ |
1311 | scale_h = calc_generic_scale(cam->rect.width, mf_tmp.width); | |
1312 | scale_v = calc_generic_scale(cam->rect.height, mf_tmp.height); | |
6a6c8786 | 1313 | |
760697be GL |
1314 | mf->width = mf_tmp.width; |
1315 | mf->height = mf_tmp.height; | |
1316 | mf->colorspace = mf_tmp.colorspace; | |
904078f1 GL |
1317 | |
1318 | /* | |
6a6c8786 | 1319 | * 8. Calculate new CEU crop - apply camera scales to previously |
e622681d | 1320 | * updated "effective" crop. |
904078f1 | 1321 | */ |
e622681d GL |
1322 | *width = scale_down(cam->subrect.width, scale_h); |
1323 | *height = scale_down(cam->subrect.height, scale_v); | |
6a6c8786 | 1324 | |
e622681d | 1325 | dev_geo(dev, "8: new client sub-window %ux%u\n", *width, *height); |
6a6c8786 GL |
1326 | |
1327 | return 0; | |
1328 | } | |
1329 | ||
1330 | /* | |
1331 | * CEU can scale and crop, but we don't want to waste bandwidth and kill the | |
1332 | * framerate by always requesting the maximum image from the client. See | |
1333 | * Documentation/video4linux/sh_mobile_camera_ceu.txt for a description of | |
1334 | * scaling and cropping algorithms and for the meaning of referenced here steps. | |
1335 | */ | |
1336 | static int sh_mobile_ceu_set_crop(struct soc_camera_device *icd, | |
1337 | struct v4l2_crop *a) | |
1338 | { | |
1339 | struct v4l2_rect *rect = &a->c; | |
1340 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); | |
1341 | struct sh_mobile_ceu_dev *pcdev = ici->priv; | |
1342 | struct v4l2_crop cam_crop; | |
1343 | struct sh_mobile_ceu_cam *cam = icd->host_priv; | |
e622681d | 1344 | struct v4l2_rect *cam_rect = &cam_crop.c; |
6a6c8786 GL |
1345 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
1346 | struct device *dev = icd->dev.parent; | |
760697be | 1347 | struct v4l2_mbus_framefmt mf; |
e622681d | 1348 | unsigned int scale_cam_h, scale_cam_v, scale_ceu_h, scale_ceu_v, |
787d0f9d | 1349 | out_width, out_height; |
e622681d | 1350 | int interm_width, interm_height; |
6a6c8786 GL |
1351 | u32 capsr, cflcr; |
1352 | int ret; | |
1353 | ||
e622681d GL |
1354 | dev_geo(dev, "S_CROP(%ux%u@%u:%u)\n", rect->width, rect->height, |
1355 | rect->left, rect->top); | |
6a6c8786 | 1356 | |
e622681d GL |
1357 | /* During camera cropping its output window can change too, stop CEU */ |
1358 | capsr = capture_save_reset(pcdev); | |
1359 | dev_dbg(dev, "CAPSR 0x%x, CFLCR 0x%x\n", capsr, pcdev->cflcr); | |
6a6c8786 | 1360 | |
e622681d GL |
1361 | /* 1. - 2. Apply iterative camera S_CROP for new input window. */ |
1362 | ret = client_s_crop(icd, a, &cam_crop); | |
6a6c8786 GL |
1363 | if (ret < 0) |
1364 | return ret; | |
1365 | ||
e622681d | 1366 | dev_geo(dev, "1-2: camera cropped to %ux%u@%u:%u\n", |
6a6c8786 GL |
1367 | cam_rect->width, cam_rect->height, |
1368 | cam_rect->left, cam_rect->top); | |
1369 | ||
1370 | /* On success cam_crop contains current camera crop */ | |
1371 | ||
e622681d GL |
1372 | /* 3. Retrieve camera output window */ |
1373 | ret = v4l2_subdev_call(sd, video, g_mbus_fmt, &mf); | |
1374 | if (ret < 0) | |
1375 | return ret; | |
6a6c8786 | 1376 | |
e622681d GL |
1377 | if (mf.width > 2560 || mf.height > 1920) |
1378 | return -EINVAL; | |
6a6c8786 | 1379 | |
e622681d GL |
1380 | /* Cache camera output window */ |
1381 | cam->width = mf.width; | |
1382 | cam->height = mf.height; | |
6a6c8786 | 1383 | |
e622681d GL |
1384 | /* 4. Calculate camera scales */ |
1385 | scale_cam_h = calc_generic_scale(cam_rect->width, mf.width); | |
1386 | scale_cam_v = calc_generic_scale(cam_rect->height, mf.height); | |
6a6c8786 | 1387 | |
e622681d GL |
1388 | /* Calculate intermediate window */ |
1389 | interm_width = scale_down(rect->width, scale_cam_h); | |
1390 | interm_height = scale_down(rect->height, scale_cam_v); | |
6a6c8786 | 1391 | |
e622681d GL |
1392 | if (pcdev->image_mode) { |
1393 | out_width = min(interm_width, icd->user_width); | |
1394 | out_height = min(interm_height, icd->user_height); | |
1395 | } else { | |
1396 | out_width = interm_width; | |
1397 | out_height = interm_height; | |
1398 | } | |
6a6c8786 GL |
1399 | |
1400 | /* | |
e622681d GL |
1401 | * 5. Calculate CEU scales from camera scales from results of (5) and |
1402 | * the user window | |
6a6c8786 | 1403 | */ |
e622681d GL |
1404 | scale_ceu_h = calc_scale(interm_width, &out_width); |
1405 | scale_ceu_v = calc_scale(interm_height, &out_height); | |
6a6c8786 | 1406 | |
e622681d GL |
1407 | dev_geo(dev, "5: CEU scales %u:%u\n", scale_ceu_h, scale_ceu_v); |
1408 | ||
1409 | /* Apply CEU scales. */ | |
6a6c8786 GL |
1410 | cflcr = scale_ceu_h | (scale_ceu_v << 16); |
1411 | if (cflcr != pcdev->cflcr) { | |
1412 | pcdev->cflcr = cflcr; | |
1413 | ceu_write(pcdev, CFLCR, cflcr); | |
1414 | } | |
1415 | ||
e622681d GL |
1416 | icd->user_width = out_width; |
1417 | icd->user_height = out_height; | |
787d0f9d GL |
1418 | cam->ceu_left = scale_down(rect->left - cam_rect->left, scale_cam_h) & ~1; |
1419 | cam->ceu_top = scale_down(rect->top - cam_rect->top, scale_cam_v) & ~1; | |
e622681d GL |
1420 | |
1421 | /* 6. Use CEU cropping to crop to the new window. */ | |
1422 | sh_mobile_ceu_set_rect(icd); | |
1423 | ||
1424 | cam->subrect = *rect; | |
1425 | ||
1426 | dev_geo(dev, "6: CEU cropped to %ux%u@%u:%u\n", | |
1427 | icd->user_width, icd->user_height, | |
1428 | cam->ceu_left, cam->ceu_top); | |
1429 | ||
787d0f9d | 1430 | /* Restore capture. The CE bit can be cleared by the hardware */ |
904078f1 GL |
1431 | if (pcdev->active) |
1432 | capsr |= 1; | |
904078f1 GL |
1433 | capture_restore(pcdev, capsr); |
1434 | ||
904078f1 GL |
1435 | /* Even if only camera cropping succeeded */ |
1436 | return ret; | |
09e231b3 GL |
1437 | } |
1438 | ||
e622681d GL |
1439 | static int sh_mobile_ceu_get_crop(struct soc_camera_device *icd, |
1440 | struct v4l2_crop *a) | |
1441 | { | |
1442 | struct sh_mobile_ceu_cam *cam = icd->host_priv; | |
1443 | ||
1444 | a->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; | |
1445 | a->c = cam->subrect; | |
1446 | ||
1447 | return 0; | |
1448 | } | |
1449 | ||
1450 | /* | |
1451 | * Calculate real client output window by applying new scales to the current | |
1452 | * client crop. New scales are calculated from the requested output format and | |
1453 | * CEU crop, mapped backed onto the client input (subrect). | |
1454 | */ | |
1455 | static void calculate_client_output(struct soc_camera_device *icd, | |
1456 | struct v4l2_pix_format *pix, struct v4l2_mbus_framefmt *mf) | |
1457 | { | |
1458 | struct sh_mobile_ceu_cam *cam = icd->host_priv; | |
1459 | struct device *dev = icd->dev.parent; | |
1460 | struct v4l2_rect *cam_subrect = &cam->subrect; | |
1461 | unsigned int scale_v, scale_h; | |
1462 | ||
1463 | if (cam_subrect->width == cam->rect.width && | |
1464 | cam_subrect->height == cam->rect.height) { | |
1465 | /* No sub-cropping */ | |
1466 | mf->width = pix->width; | |
1467 | mf->height = pix->height; | |
1468 | return; | |
1469 | } | |
1470 | ||
1471 | /* 1.-2. Current camera scales and subwin - cached. */ | |
1472 | ||
1473 | dev_geo(dev, "2: subwin %ux%u@%u:%u\n", | |
1474 | cam_subrect->width, cam_subrect->height, | |
1475 | cam_subrect->left, cam_subrect->top); | |
1476 | ||
1477 | /* | |
1478 | * 3. Calculate new combined scales from input sub-window to requested | |
1479 | * user window. | |
1480 | */ | |
1481 | ||
1482 | /* | |
1483 | * TODO: CEU cannot scale images larger than VGA to smaller than SubQCIF | |
1484 | * (128x96) or larger than VGA | |
1485 | */ | |
1486 | scale_h = calc_generic_scale(cam_subrect->width, pix->width); | |
1487 | scale_v = calc_generic_scale(cam_subrect->height, pix->height); | |
1488 | ||
1489 | dev_geo(dev, "3: scales %u:%u\n", scale_h, scale_v); | |
1490 | ||
1491 | /* | |
1492 | * 4. Calculate client output window by applying combined scales to real | |
1493 | * input window. | |
1494 | */ | |
1495 | mf->width = scale_down(cam->rect.width, scale_h); | |
1496 | mf->height = scale_down(cam->rect.height, scale_v); | |
1497 | } | |
1498 | ||
961801bb | 1499 | /* Similar to set_crop multistage iterative algorithm */ |
d8fac217 | 1500 | static int sh_mobile_ceu_set_fmt(struct soc_camera_device *icd, |
09e231b3 | 1501 | struct v4l2_format *f) |
0d3244d6 | 1502 | { |
9414de39 | 1503 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); |
961801bb | 1504 | struct sh_mobile_ceu_dev *pcdev = ici->priv; |
904078f1 GL |
1505 | struct sh_mobile_ceu_cam *cam = icd->host_priv; |
1506 | struct v4l2_pix_format *pix = &f->fmt.pix; | |
760697be | 1507 | struct v4l2_mbus_framefmt mf; |
6a6c8786 | 1508 | struct device *dev = icd->dev.parent; |
904078f1 | 1509 | __u32 pixfmt = pix->pixelformat; |
9414de39 | 1510 | const struct soc_camera_format_xlate *xlate; |
b3b5020d GL |
1511 | /* Keep Compiler Happy */ |
1512 | unsigned int ceu_sub_width = 0, ceu_sub_height = 0; | |
6a6c8786 GL |
1513 | u16 scale_v, scale_h; |
1514 | int ret; | |
1edcc10d KM |
1515 | bool image_mode; |
1516 | enum v4l2_field field; | |
961801bb | 1517 | |
e622681d GL |
1518 | dev_geo(dev, "S_FMT(pix=0x%x, %ux%u)\n", pixfmt, pix->width, pix->height); |
1519 | ||
961801bb | 1520 | switch (pix->field) { |
961801bb GL |
1521 | default: |
1522 | pix->field = V4L2_FIELD_NONE; | |
1523 | /* fall-through */ | |
1edcc10d KM |
1524 | case V4L2_FIELD_INTERLACED_TB: |
1525 | case V4L2_FIELD_INTERLACED_BT: | |
961801bb | 1526 | case V4L2_FIELD_NONE: |
1edcc10d KM |
1527 | field = pix->field; |
1528 | break; | |
1529 | case V4L2_FIELD_INTERLACED: | |
1530 | field = V4L2_FIELD_INTERLACED_TB; | |
961801bb GL |
1531 | break; |
1532 | } | |
25c4d74e | 1533 | |
9414de39 MD |
1534 | xlate = soc_camera_xlate_by_fourcc(icd, pixfmt); |
1535 | if (!xlate) { | |
6a6c8786 | 1536 | dev_warn(dev, "Format %x not found\n", pixfmt); |
9414de39 | 1537 | return -EINVAL; |
25c4d74e GL |
1538 | } |
1539 | ||
e622681d GL |
1540 | /* 1.-4. Calculate client output geometry */ |
1541 | calculate_client_output(icd, &f->fmt.pix, &mf); | |
760697be GL |
1542 | mf.field = pix->field; |
1543 | mf.colorspace = pix->colorspace; | |
1544 | mf.code = xlate->code; | |
6a6c8786 | 1545 | |
961801bb GL |
1546 | switch (pixfmt) { |
1547 | case V4L2_PIX_FMT_NV12: | |
1548 | case V4L2_PIX_FMT_NV21: | |
1549 | case V4L2_PIX_FMT_NV16: | |
1550 | case V4L2_PIX_FMT_NV61: | |
6a6c8786 | 1551 | image_mode = true; |
961801bb GL |
1552 | break; |
1553 | default: | |
6a6c8786 | 1554 | image_mode = false; |
9414de39 | 1555 | } |
25c4d74e | 1556 | |
e622681d | 1557 | dev_geo(dev, "4: request camera output %ux%u\n", mf.width, mf.height); |
961801bb | 1558 | |
6a6c8786 | 1559 | /* 5. - 9. */ |
e622681d | 1560 | ret = client_scale(icd, &mf, &ceu_sub_width, &ceu_sub_height, |
1edcc10d | 1561 | image_mode && V4L2_FIELD_NONE == field); |
6a6c8786 | 1562 | |
e622681d | 1563 | dev_geo(dev, "5-9: client scale return %d\n", ret); |
6a6c8786 GL |
1564 | |
1565 | /* Done with the camera. Now see if we can improve the result */ | |
1566 | ||
b3b5020d GL |
1567 | dev_geo(dev, "fmt %ux%u, requested %ux%u\n", |
1568 | mf.width, mf.height, pix->width, pix->height); | |
6a6c8786 GL |
1569 | if (ret < 0) |
1570 | return ret; | |
1571 | ||
760697be GL |
1572 | if (mf.code != xlate->code) |
1573 | return -EINVAL; | |
1574 | ||
e622681d GL |
1575 | /* 9. Prepare CEU crop */ |
1576 | cam->width = mf.width; | |
1577 | cam->height = mf.height; | |
1578 | ||
6a6c8786 | 1579 | /* 10. Use CEU scaling to scale to the requested user window. */ |
961801bb GL |
1580 | |
1581 | /* We cannot scale up */ | |
e622681d GL |
1582 | if (pix->width > ceu_sub_width) |
1583 | ceu_sub_width = pix->width; | |
961801bb | 1584 | |
e622681d GL |
1585 | if (pix->height > ceu_sub_height) |
1586 | ceu_sub_height = pix->height; | |
961801bb | 1587 | |
760697be GL |
1588 | pix->colorspace = mf.colorspace; |
1589 | ||
1590 | if (image_mode) { | |
1591 | /* Scale pix->{width x height} down to width x height */ | |
e622681d GL |
1592 | scale_h = calc_scale(ceu_sub_width, &pix->width); |
1593 | scale_v = calc_scale(ceu_sub_height, &pix->height); | |
760697be | 1594 | } else { |
e622681d GL |
1595 | pix->width = ceu_sub_width; |
1596 | pix->height = ceu_sub_height; | |
1597 | scale_h = 0; | |
1598 | scale_v = 0; | |
760697be | 1599 | } |
961801bb | 1600 | |
e622681d GL |
1601 | pcdev->cflcr = scale_h | (scale_v << 16); |
1602 | ||
1603 | /* | |
1604 | * We have calculated CFLCR, the actual configuration will be performed | |
1605 | * in sh_mobile_ceu_set_bus_param() | |
1606 | */ | |
1607 | ||
6a6c8786 | 1608 | dev_geo(dev, "10: W: %u : 0x%x = %u, H: %u : 0x%x = %u\n", |
e622681d GL |
1609 | ceu_sub_width, scale_h, pix->width, |
1610 | ceu_sub_height, scale_v, pix->height); | |
961801bb | 1611 | |
760697be | 1612 | cam->code = xlate->code; |
760697be | 1613 | icd->current_fmt = xlate; |
961801bb | 1614 | |
1edcc10d | 1615 | pcdev->field = field; |
6a6c8786 | 1616 | pcdev->image_mode = image_mode; |
961801bb GL |
1617 | |
1618 | return 0; | |
0d3244d6 MD |
1619 | } |
1620 | ||
d8fac217 GL |
1621 | static int sh_mobile_ceu_try_fmt(struct soc_camera_device *icd, |
1622 | struct v4l2_format *f) | |
0d3244d6 | 1623 | { |
9414de39 | 1624 | const struct soc_camera_format_xlate *xlate; |
904078f1 | 1625 | struct v4l2_pix_format *pix = &f->fmt.pix; |
c9c1f1c0 | 1626 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
760697be | 1627 | struct v4l2_mbus_framefmt mf; |
904078f1 | 1628 | __u32 pixfmt = pix->pixelformat; |
961801bb | 1629 | int width, height; |
ccab8a29 | 1630 | int ret; |
a2c8c68c | 1631 | |
b3b5020d GL |
1632 | dev_geo(icd->dev.parent, "TRY_FMT(pix=0x%x, %ux%u)\n", |
1633 | pixfmt, pix->width, pix->height); | |
1634 | ||
9414de39 MD |
1635 | xlate = soc_camera_xlate_by_fourcc(icd, pixfmt); |
1636 | if (!xlate) { | |
0166b743 | 1637 | dev_warn(icd->dev.parent, "Format %x not found\n", pixfmt); |
25c4d74e | 1638 | return -EINVAL; |
9414de39 | 1639 | } |
25c4d74e | 1640 | |
0d3244d6 MD |
1641 | /* FIXME: calculate using depth and bus width */ |
1642 | ||
904078f1 GL |
1643 | v4l_bound_align_image(&pix->width, 2, 2560, 1, |
1644 | &pix->height, 4, 1920, 2, 0); | |
0d3244d6 | 1645 | |
961801bb GL |
1646 | width = pix->width; |
1647 | height = pix->height; | |
1648 | ||
760697be | 1649 | pix->bytesperline = soc_mbus_bytes_per_line(width, xlate->host_fmt); |
981cbef2 | 1650 | if ((int)pix->bytesperline < 0) |
760697be GL |
1651 | return pix->bytesperline; |
1652 | pix->sizeimage = height * pix->bytesperline; | |
979ea1dd | 1653 | |
0d3244d6 | 1654 | /* limit to sensor capabilities */ |
760697be GL |
1655 | mf.width = pix->width; |
1656 | mf.height = pix->height; | |
1657 | mf.field = pix->field; | |
1658 | mf.code = xlate->code; | |
1659 | mf.colorspace = pix->colorspace; | |
1660 | ||
24105ebc | 1661 | ret = v4l2_device_call_until_err(sd->v4l2_dev, (long)icd, video, try_mbus_fmt, &mf); |
ccab8a29 KM |
1662 | if (ret < 0) |
1663 | return ret; | |
1664 | ||
760697be GL |
1665 | pix->width = mf.width; |
1666 | pix->height = mf.height; | |
1667 | pix->field = mf.field; | |
1668 | pix->colorspace = mf.colorspace; | |
1669 | ||
961801bb GL |
1670 | switch (pixfmt) { |
1671 | case V4L2_PIX_FMT_NV12: | |
1672 | case V4L2_PIX_FMT_NV21: | |
1673 | case V4L2_PIX_FMT_NV16: | |
1674 | case V4L2_PIX_FMT_NV61: | |
1675 | /* FIXME: check against rect_max after converting soc-camera */ | |
1676 | /* We can scale precisely, need a bigger image from camera */ | |
1677 | if (pix->width < width || pix->height < height) { | |
760697be GL |
1678 | /* |
1679 | * We presume, the sensor behaves sanely, i.e., if | |
1680 | * requested a bigger rectangle, it will not return a | |
1681 | * smaller one. | |
1682 | */ | |
1683 | mf.width = 2560; | |
1684 | mf.height = 1920; | |
24105ebc | 1685 | ret = v4l2_device_call_until_err(sd->v4l2_dev, (long)icd, video, |
b3b5020d | 1686 | try_mbus_fmt, &mf); |
961801bb GL |
1687 | if (ret < 0) { |
1688 | /* Shouldn't actually happen... */ | |
0166b743 | 1689 | dev_err(icd->dev.parent, |
760697be GL |
1690 | "FIXME: client try_fmt() = %d\n", ret); |
1691 | return ret; | |
961801bb GL |
1692 | } |
1693 | } | |
760697be GL |
1694 | /* We will scale exactly */ |
1695 | if (mf.width > width) | |
961801bb | 1696 | pix->width = width; |
760697be | 1697 | if (mf.height > height) |
961801bb | 1698 | pix->height = height; |
ccab8a29 KM |
1699 | } |
1700 | ||
b3b5020d GL |
1701 | dev_geo(icd->dev.parent, "%s(): return %d, fmt 0x%x, %ux%u\n", |
1702 | __func__, ret, pix->pixelformat, pix->width, pix->height); | |
1703 | ||
ccab8a29 | 1704 | return ret; |
0d3244d6 MD |
1705 | } |
1706 | ||
0d3244d6 MD |
1707 | static unsigned int sh_mobile_ceu_poll(struct file *file, poll_table *pt) |
1708 | { | |
57bee29d | 1709 | struct soc_camera_device *icd = file->private_data; |
0d3244d6 | 1710 | |
a616898d | 1711 | return vb2_poll(&icd->vb2_vidq, file, pt); |
0d3244d6 MD |
1712 | } |
1713 | ||
1714 | static int sh_mobile_ceu_querycap(struct soc_camera_host *ici, | |
1715 | struct v4l2_capability *cap) | |
1716 | { | |
1717 | strlcpy(cap->card, "SuperH_Mobile_CEU", sizeof(cap->card)); | |
1718 | cap->version = KERNEL_VERSION(0, 0, 5); | |
1719 | cap->capabilities = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING; | |
1720 | return 0; | |
1721 | } | |
1722 | ||
a616898d GL |
1723 | static int sh_mobile_ceu_init_videobuf(struct vb2_queue *q, |
1724 | struct soc_camera_device *icd) | |
0d3244d6 | 1725 | { |
a616898d GL |
1726 | q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; |
1727 | q->io_modes = VB2_MMAP | VB2_USERPTR; | |
1728 | q->drv_priv = icd; | |
1729 | q->ops = &sh_mobile_ceu_videobuf_ops; | |
1730 | q->mem_ops = &vb2_dma_contig_memops; | |
1731 | q->buf_struct_size = sizeof(struct sh_mobile_ceu_buffer); | |
1732 | ||
1733 | return vb2_queue_init(q); | |
0d3244d6 MD |
1734 | } |
1735 | ||
4a6110bc GL |
1736 | static int sh_mobile_ceu_get_ctrl(struct soc_camera_device *icd, |
1737 | struct v4l2_control *ctrl) | |
1738 | { | |
1739 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); | |
1740 | struct sh_mobile_ceu_dev *pcdev = ici->priv; | |
1741 | u32 val; | |
1742 | ||
1743 | switch (ctrl->id) { | |
1744 | case V4L2_CID_SHARPNESS: | |
1745 | val = ceu_read(pcdev, CLFCR); | |
1746 | ctrl->value = val ^ 1; | |
1747 | return 0; | |
1748 | } | |
1749 | return -ENOIOCTLCMD; | |
1750 | } | |
1751 | ||
1752 | static int sh_mobile_ceu_set_ctrl(struct soc_camera_device *icd, | |
1753 | struct v4l2_control *ctrl) | |
1754 | { | |
1755 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); | |
1756 | struct sh_mobile_ceu_dev *pcdev = ici->priv; | |
1757 | ||
1758 | switch (ctrl->id) { | |
1759 | case V4L2_CID_SHARPNESS: | |
760697be | 1760 | switch (icd->current_fmt->host_fmt->fourcc) { |
4a6110bc GL |
1761 | case V4L2_PIX_FMT_NV12: |
1762 | case V4L2_PIX_FMT_NV21: | |
1763 | case V4L2_PIX_FMT_NV16: | |
1764 | case V4L2_PIX_FMT_NV61: | |
1765 | ceu_write(pcdev, CLFCR, !ctrl->value); | |
1766 | return 0; | |
1767 | } | |
1768 | return -EINVAL; | |
1769 | } | |
1770 | return -ENOIOCTLCMD; | |
1771 | } | |
1772 | ||
1773 | static const struct v4l2_queryctrl sh_mobile_ceu_controls[] = { | |
1774 | { | |
1775 | .id = V4L2_CID_SHARPNESS, | |
1776 | .type = V4L2_CTRL_TYPE_BOOLEAN, | |
1777 | .name = "Low-pass filter", | |
1778 | .minimum = 0, | |
1779 | .maximum = 1, | |
1780 | .step = 1, | |
1781 | .default_value = 0, | |
1782 | }, | |
1783 | }; | |
1784 | ||
0d3244d6 MD |
1785 | static struct soc_camera_host_ops sh_mobile_ceu_host_ops = { |
1786 | .owner = THIS_MODULE, | |
1787 | .add = sh_mobile_ceu_add_device, | |
1788 | .remove = sh_mobile_ceu_remove_device, | |
9414de39 | 1789 | .get_formats = sh_mobile_ceu_get_formats, |
904078f1 | 1790 | .put_formats = sh_mobile_ceu_put_formats, |
e622681d | 1791 | .get_crop = sh_mobile_ceu_get_crop, |
09e231b3 | 1792 | .set_crop = sh_mobile_ceu_set_crop, |
d8fac217 GL |
1793 | .set_fmt = sh_mobile_ceu_set_fmt, |
1794 | .try_fmt = sh_mobile_ceu_try_fmt, | |
4a6110bc GL |
1795 | .set_ctrl = sh_mobile_ceu_set_ctrl, |
1796 | .get_ctrl = sh_mobile_ceu_get_ctrl, | |
0d3244d6 MD |
1797 | .poll = sh_mobile_ceu_poll, |
1798 | .querycap = sh_mobile_ceu_querycap, | |
0d3244d6 | 1799 | .set_bus_param = sh_mobile_ceu_set_bus_param, |
a616898d | 1800 | .init_videobuf2 = sh_mobile_ceu_init_videobuf, |
4a6110bc GL |
1801 | .controls = sh_mobile_ceu_controls, |
1802 | .num_controls = ARRAY_SIZE(sh_mobile_ceu_controls), | |
0d3244d6 MD |
1803 | }; |
1804 | ||
b3b5020d GL |
1805 | struct bus_wait { |
1806 | struct notifier_block notifier; | |
1807 | struct completion completion; | |
1808 | struct device *dev; | |
1809 | }; | |
1810 | ||
1811 | static int bus_notify(struct notifier_block *nb, | |
1812 | unsigned long action, void *data) | |
1813 | { | |
1814 | struct device *dev = data; | |
1815 | struct bus_wait *wait = container_of(nb, struct bus_wait, notifier); | |
1816 | ||
1817 | if (wait->dev != dev) | |
1818 | return NOTIFY_DONE; | |
1819 | ||
1820 | switch (action) { | |
1821 | case BUS_NOTIFY_UNBOUND_DRIVER: | |
1822 | /* Protect from module unloading */ | |
1823 | wait_for_completion(&wait->completion); | |
1824 | return NOTIFY_OK; | |
1825 | } | |
1826 | return NOTIFY_DONE; | |
1827 | } | |
1828 | ||
979ea1dd | 1829 | static int __devinit sh_mobile_ceu_probe(struct platform_device *pdev) |
0d3244d6 MD |
1830 | { |
1831 | struct sh_mobile_ceu_dev *pcdev; | |
1832 | struct resource *res; | |
1833 | void __iomem *base; | |
1834 | unsigned int irq; | |
1835 | int err = 0; | |
b3b5020d GL |
1836 | struct bus_wait wait = { |
1837 | .completion = COMPLETION_INITIALIZER_ONSTACK(wait.completion), | |
1838 | .notifier.notifier_call = bus_notify, | |
1839 | }; | |
1840 | struct device *csi2; | |
0d3244d6 MD |
1841 | |
1842 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); | |
1843 | irq = platform_get_irq(pdev, 0); | |
b89fc2e5 | 1844 | if (!res || (int)irq <= 0) { |
0d3244d6 MD |
1845 | dev_err(&pdev->dev, "Not enough CEU platform resources.\n"); |
1846 | err = -ENODEV; | |
1847 | goto exit; | |
1848 | } | |
1849 | ||
1850 | pcdev = kzalloc(sizeof(*pcdev), GFP_KERNEL); | |
1851 | if (!pcdev) { | |
1852 | dev_err(&pdev->dev, "Could not allocate pcdev\n"); | |
1853 | err = -ENOMEM; | |
1854 | goto exit; | |
1855 | } | |
1856 | ||
0d3244d6 MD |
1857 | INIT_LIST_HEAD(&pcdev->capture); |
1858 | spin_lock_init(&pcdev->lock); | |
1859 | ||
1860 | pcdev->pdata = pdev->dev.platform_data; | |
1861 | if (!pcdev->pdata) { | |
1862 | err = -EINVAL; | |
1863 | dev_err(&pdev->dev, "CEU platform data not set.\n"); | |
1864 | goto exit_kfree; | |
1865 | } | |
1866 | ||
eb6c8558 | 1867 | base = ioremap_nocache(res->start, resource_size(res)); |
0d3244d6 MD |
1868 | if (!base) { |
1869 | err = -ENXIO; | |
1870 | dev_err(&pdev->dev, "Unable to ioremap CEU registers.\n"); | |
1871 | goto exit_kfree; | |
1872 | } | |
1873 | ||
1874 | pcdev->irq = irq; | |
1875 | pcdev->base = base; | |
1876 | pcdev->video_limit = 0; /* only enabled if second resource exists */ | |
0d3244d6 MD |
1877 | |
1878 | res = platform_get_resource(pdev, IORESOURCE_MEM, 1); | |
1879 | if (res) { | |
1880 | err = dma_declare_coherent_memory(&pdev->dev, res->start, | |
1881 | res->start, | |
eb6c8558 | 1882 | resource_size(res), |
0d3244d6 MD |
1883 | DMA_MEMORY_MAP | |
1884 | DMA_MEMORY_EXCLUSIVE); | |
1885 | if (!err) { | |
1886 | dev_err(&pdev->dev, "Unable to declare CEU memory.\n"); | |
1887 | err = -ENXIO; | |
1888 | goto exit_iounmap; | |
1889 | } | |
1890 | ||
eb6c8558 | 1891 | pcdev->video_limit = resource_size(res); |
0d3244d6 MD |
1892 | } |
1893 | ||
1894 | /* request irq */ | |
1895 | err = request_irq(pcdev->irq, sh_mobile_ceu_irq, IRQF_DISABLED, | |
af128a10 | 1896 | dev_name(&pdev->dev), pcdev); |
0d3244d6 MD |
1897 | if (err) { |
1898 | dev_err(&pdev->dev, "Unable to register CEU interrupt.\n"); | |
1899 | goto exit_release_mem; | |
1900 | } | |
1901 | ||
6d1386c6 MD |
1902 | pm_suspend_ignore_children(&pdev->dev, true); |
1903 | pm_runtime_enable(&pdev->dev); | |
1904 | pm_runtime_resume(&pdev->dev); | |
a42b6dd6 | 1905 | |
0d3244d6 | 1906 | pcdev->ici.priv = pcdev; |
979ea1dd | 1907 | pcdev->ici.v4l2_dev.dev = &pdev->dev; |
0d3244d6 | 1908 | pcdev->ici.nr = pdev->id; |
af128a10 KS |
1909 | pcdev->ici.drv_name = dev_name(&pdev->dev); |
1910 | pcdev->ici.ops = &sh_mobile_ceu_host_ops; | |
0d3244d6 | 1911 | |
b3b5020d GL |
1912 | /* CSI2 interfacing */ |
1913 | csi2 = pcdev->pdata->csi2_dev; | |
1914 | if (csi2) { | |
1915 | wait.dev = csi2; | |
1916 | ||
1917 | err = bus_register_notifier(&platform_bus_type, &wait.notifier); | |
1918 | if (err < 0) | |
1919 | goto exit_free_clk; | |
1920 | ||
1921 | /* | |
1922 | * From this point the driver module will not unload, until | |
1923 | * we complete the completion. | |
1924 | */ | |
1925 | ||
cd05e79f | 1926 | if (!csi2->driver) { |
b3b5020d GL |
1927 | complete(&wait.completion); |
1928 | /* Either too late, or probing failed */ | |
1929 | bus_unregister_notifier(&platform_bus_type, &wait.notifier); | |
1930 | err = -ENXIO; | |
1931 | goto exit_free_clk; | |
1932 | } | |
1933 | ||
1934 | /* | |
1935 | * The module is still loaded, in the worst case it is hanging | |
1936 | * in device release on our completion. So, _now_ dereferencing | |
1937 | * the "owner" is safe! | |
1938 | */ | |
1939 | ||
1940 | err = try_module_get(csi2->driver->owner); | |
1941 | ||
1942 | /* Let notifier complete, if it has been locked */ | |
1943 | complete(&wait.completion); | |
1944 | bus_unregister_notifier(&platform_bus_type, &wait.notifier); | |
1945 | if (!err) { | |
1946 | err = -ENODEV; | |
1947 | goto exit_free_clk; | |
1948 | } | |
1949 | } | |
1950 | ||
a616898d GL |
1951 | pcdev->alloc_ctx = vb2_dma_contig_init_ctx(&pdev->dev); |
1952 | if (IS_ERR(pcdev->alloc_ctx)) { | |
1953 | err = PTR_ERR(pcdev->alloc_ctx); | |
1954 | goto exit_module_put; | |
1955 | } | |
1956 | ||
0d3244d6 MD |
1957 | err = soc_camera_host_register(&pcdev->ici); |
1958 | if (err) | |
a616898d | 1959 | goto exit_free_ctx; |
0d3244d6 MD |
1960 | |
1961 | return 0; | |
1962 | ||
a616898d GL |
1963 | exit_free_ctx: |
1964 | vb2_dma_contig_cleanup_ctx(pcdev->alloc_ctx); | |
b3b5020d GL |
1965 | exit_module_put: |
1966 | if (csi2 && csi2->driver) | |
1967 | module_put(csi2->driver->owner); | |
055e05a0 KM |
1968 | exit_free_clk: |
1969 | pm_runtime_disable(&pdev->dev); | |
0d3244d6 MD |
1970 | free_irq(pcdev->irq, pcdev); |
1971 | exit_release_mem: | |
1972 | if (platform_get_resource(pdev, IORESOURCE_MEM, 1)) | |
1973 | dma_release_declared_memory(&pdev->dev); | |
1974 | exit_iounmap: | |
1975 | iounmap(base); | |
1976 | exit_kfree: | |
1977 | kfree(pcdev); | |
1978 | exit: | |
1979 | return err; | |
1980 | } | |
1981 | ||
979ea1dd | 1982 | static int __devexit sh_mobile_ceu_remove(struct platform_device *pdev) |
0d3244d6 | 1983 | { |
eff505fa GL |
1984 | struct soc_camera_host *soc_host = to_soc_camera_host(&pdev->dev); |
1985 | struct sh_mobile_ceu_dev *pcdev = container_of(soc_host, | |
1986 | struct sh_mobile_ceu_dev, ici); | |
b3b5020d | 1987 | struct device *csi2 = pcdev->pdata->csi2_dev; |
0d3244d6 | 1988 | |
eff505fa | 1989 | soc_camera_host_unregister(soc_host); |
055e05a0 | 1990 | pm_runtime_disable(&pdev->dev); |
0d3244d6 MD |
1991 | free_irq(pcdev->irq, pcdev); |
1992 | if (platform_get_resource(pdev, IORESOURCE_MEM, 1)) | |
1993 | dma_release_declared_memory(&pdev->dev); | |
1994 | iounmap(pcdev->base); | |
a616898d | 1995 | vb2_dma_contig_cleanup_ctx(pcdev->alloc_ctx); |
b3b5020d GL |
1996 | if (csi2 && csi2->driver) |
1997 | module_put(csi2->driver->owner); | |
0d3244d6 | 1998 | kfree(pcdev); |
b3b5020d | 1999 | |
0d3244d6 MD |
2000 | return 0; |
2001 | } | |
2002 | ||
6d1386c6 MD |
2003 | static int sh_mobile_ceu_runtime_nop(struct device *dev) |
2004 | { | |
2005 | /* Runtime PM callback shared between ->runtime_suspend() | |
2006 | * and ->runtime_resume(). Simply returns success. | |
2007 | * | |
2008 | * This driver re-initializes all registers after | |
2009 | * pm_runtime_get_sync() anyway so there is no need | |
2010 | * to save and restore registers here. | |
2011 | */ | |
2012 | return 0; | |
2013 | } | |
2014 | ||
47145210 | 2015 | static const struct dev_pm_ops sh_mobile_ceu_dev_pm_ops = { |
6d1386c6 MD |
2016 | .runtime_suspend = sh_mobile_ceu_runtime_nop, |
2017 | .runtime_resume = sh_mobile_ceu_runtime_nop, | |
2018 | }; | |
2019 | ||
0d3244d6 MD |
2020 | static struct platform_driver sh_mobile_ceu_driver = { |
2021 | .driver = { | |
2022 | .name = "sh_mobile_ceu", | |
6d1386c6 | 2023 | .pm = &sh_mobile_ceu_dev_pm_ops, |
0d3244d6 MD |
2024 | }, |
2025 | .probe = sh_mobile_ceu_probe, | |
50e55fd1 | 2026 | .remove = __devexit_p(sh_mobile_ceu_remove), |
0d3244d6 MD |
2027 | }; |
2028 | ||
2029 | static int __init sh_mobile_ceu_init(void) | |
2030 | { | |
b3b5020d GL |
2031 | /* Whatever return code */ |
2032 | request_module("sh_mobile_csi2"); | |
0d3244d6 MD |
2033 | return platform_driver_register(&sh_mobile_ceu_driver); |
2034 | } | |
2035 | ||
2036 | static void __exit sh_mobile_ceu_exit(void) | |
2037 | { | |
01c1e4ca | 2038 | platform_driver_unregister(&sh_mobile_ceu_driver); |
0d3244d6 MD |
2039 | } |
2040 | ||
2041 | module_init(sh_mobile_ceu_init); | |
2042 | module_exit(sh_mobile_ceu_exit); | |
2043 | ||
2044 | MODULE_DESCRIPTION("SuperH Mobile CEU driver"); | |
2045 | MODULE_AUTHOR("Magnus Damm"); | |
2046 | MODULE_LICENSE("GPL"); | |
40e2e092 | 2047 | MODULE_ALIAS("platform:sh_mobile_ceu"); |