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05efa71b GL |
1 | /* |
2 | * sh-mobile VEU mem2mem driver | |
3 | * | |
4 | * Copyright (C) 2012 Renesas Electronics Corporation | |
5 | * Author: Guennadi Liakhovetski, <g.liakhovetski@gmx.de> | |
6 | * Copyright (C) 2008 Magnus Damm | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or modify | |
9 | * it under the terms of the version 2 of the GNU General Public License as | |
10 | * published by the Free Software Foundation | |
11 | */ | |
12 | ||
f2b4dc1a | 13 | #include <linux/err.h> |
05efa71b GL |
14 | #include <linux/fs.h> |
15 | #include <linux/kernel.h> | |
16 | #include <linux/module.h> | |
17 | #include <linux/interrupt.h> | |
18 | #include <linux/io.h> | |
19 | #include <linux/platform_device.h> | |
20 | #include <linux/pm_runtime.h> | |
21 | #include <linux/slab.h> | |
22 | #include <linux/types.h> | |
23 | #include <linux/videodev2.h> | |
24 | ||
25 | #include <media/v4l2-dev.h> | |
26 | #include <media/v4l2-device.h> | |
27 | #include <media/v4l2-ioctl.h> | |
28 | #include <media/v4l2-mem2mem.h> | |
29 | #include <media/videobuf2-dma-contig.h> | |
30 | ||
31 | #define VEU_STR 0x00 /* start register */ | |
32 | #define VEU_SWR 0x10 /* src: line length */ | |
33 | #define VEU_SSR 0x14 /* src: image size */ | |
34 | #define VEU_SAYR 0x18 /* src: y/rgb plane address */ | |
35 | #define VEU_SACR 0x1c /* src: c plane address */ | |
36 | #define VEU_BSSR 0x20 /* bundle mode register */ | |
37 | #define VEU_EDWR 0x30 /* dst: line length */ | |
38 | #define VEU_DAYR 0x34 /* dst: y/rgb plane address */ | |
39 | #define VEU_DACR 0x38 /* dst: c plane address */ | |
40 | #define VEU_TRCR 0x50 /* transform control */ | |
41 | #define VEU_RFCR 0x54 /* resize scale */ | |
42 | #define VEU_RFSR 0x58 /* resize clip */ | |
43 | #define VEU_ENHR 0x5c /* enhance */ | |
44 | #define VEU_FMCR 0x70 /* filter mode */ | |
45 | #define VEU_VTCR 0x74 /* lowpass vertical */ | |
46 | #define VEU_HTCR 0x78 /* lowpass horizontal */ | |
47 | #define VEU_APCR 0x80 /* color match */ | |
48 | #define VEU_ECCR 0x84 /* color replace */ | |
49 | #define VEU_AFXR 0x90 /* fixed mode */ | |
50 | #define VEU_SWPR 0x94 /* swap */ | |
51 | #define VEU_EIER 0xa0 /* interrupt mask */ | |
52 | #define VEU_EVTR 0xa4 /* interrupt event */ | |
53 | #define VEU_STAR 0xb0 /* status */ | |
54 | #define VEU_BSRR 0xb4 /* reset */ | |
55 | ||
56 | #define VEU_MCR00 0x200 /* color conversion matrix coefficient 00 */ | |
57 | #define VEU_MCR01 0x204 /* color conversion matrix coefficient 01 */ | |
58 | #define VEU_MCR02 0x208 /* color conversion matrix coefficient 02 */ | |
59 | #define VEU_MCR10 0x20c /* color conversion matrix coefficient 10 */ | |
60 | #define VEU_MCR11 0x210 /* color conversion matrix coefficient 11 */ | |
61 | #define VEU_MCR12 0x214 /* color conversion matrix coefficient 12 */ | |
62 | #define VEU_MCR20 0x218 /* color conversion matrix coefficient 20 */ | |
63 | #define VEU_MCR21 0x21c /* color conversion matrix coefficient 21 */ | |
64 | #define VEU_MCR22 0x220 /* color conversion matrix coefficient 22 */ | |
65 | #define VEU_COFFR 0x224 /* color conversion offset */ | |
66 | #define VEU_CBR 0x228 /* color conversion clip */ | |
67 | ||
68 | /* | |
69 | * 4092x4092 max size is the normal case. In some cases it can be reduced to | |
70 | * 2048x2048, in other cases it can be 4092x8188 or even 8188x8188. | |
71 | */ | |
72 | #define MAX_W 4092 | |
73 | #define MAX_H 4092 | |
74 | #define MIN_W 8 | |
75 | #define MIN_H 8 | |
76 | #define ALIGN_W 4 | |
77 | ||
78 | /* 3 buffers of 2048 x 1536 - 3 megapixels @ 16bpp */ | |
79 | #define VIDEO_MEM_LIMIT ALIGN(2048 * 1536 * 2 * 3, 1024 * 1024) | |
80 | ||
81 | #define MEM2MEM_DEF_TRANSLEN 1 | |
82 | ||
83 | struct sh_veu_dev; | |
84 | ||
85 | struct sh_veu_file { | |
86 | struct sh_veu_dev *veu_dev; | |
87 | bool cfg_needed; | |
88 | }; | |
89 | ||
90 | struct sh_veu_format { | |
91 | char *name; | |
92 | u32 fourcc; | |
93 | unsigned int depth; | |
94 | unsigned int ydepth; | |
95 | }; | |
96 | ||
97 | /* video data format */ | |
98 | struct sh_veu_vfmt { | |
99 | /* Replace with v4l2_rect */ | |
100 | struct v4l2_rect frame; | |
101 | unsigned int bytesperline; | |
102 | unsigned int offset_y; | |
103 | unsigned int offset_c; | |
104 | const struct sh_veu_format *fmt; | |
105 | }; | |
106 | ||
107 | struct sh_veu_dev { | |
108 | struct v4l2_device v4l2_dev; | |
109 | struct video_device vdev; | |
110 | struct v4l2_m2m_dev *m2m_dev; | |
111 | struct device *dev; | |
112 | struct v4l2_m2m_ctx *m2m_ctx; | |
113 | struct sh_veu_vfmt vfmt_out; | |
114 | struct sh_veu_vfmt vfmt_in; | |
115 | /* Only single user per direction so far */ | |
116 | struct sh_veu_file *capture; | |
117 | struct sh_veu_file *output; | |
118 | struct mutex fop_lock; | |
119 | void __iomem *base; | |
120 | struct vb2_alloc_ctx *alloc_ctx; | |
121 | spinlock_t lock; | |
122 | bool is_2h; | |
123 | unsigned int xaction; | |
124 | bool aborting; | |
125 | }; | |
126 | ||
127 | enum sh_veu_fmt_idx { | |
128 | SH_VEU_FMT_NV12, | |
129 | SH_VEU_FMT_NV16, | |
130 | SH_VEU_FMT_NV24, | |
131 | SH_VEU_FMT_RGB332, | |
132 | SH_VEU_FMT_RGB444, | |
133 | SH_VEU_FMT_RGB565, | |
134 | SH_VEU_FMT_RGB666, | |
135 | SH_VEU_FMT_RGB24, | |
136 | }; | |
137 | ||
138 | #define VGA_WIDTH 640 | |
139 | #define VGA_HEIGHT 480 | |
140 | ||
141 | #define DEFAULT_IN_WIDTH VGA_WIDTH | |
142 | #define DEFAULT_IN_HEIGHT VGA_HEIGHT | |
143 | #define DEFAULT_IN_FMTIDX SH_VEU_FMT_NV12 | |
144 | #define DEFAULT_OUT_WIDTH VGA_WIDTH | |
145 | #define DEFAULT_OUT_HEIGHT VGA_HEIGHT | |
146 | #define DEFAULT_OUT_FMTIDX SH_VEU_FMT_RGB565 | |
147 | ||
148 | /* | |
149 | * Alignment: Y-plane should be 4-byte aligned for NV12 and NV16, and 8-byte | |
150 | * aligned for NV24. | |
151 | */ | |
152 | static const struct sh_veu_format sh_veu_fmt[] = { | |
153 | [SH_VEU_FMT_NV12] = { .ydepth = 8, .depth = 12, .name = "NV12", .fourcc = V4L2_PIX_FMT_NV12 }, | |
154 | [SH_VEU_FMT_NV16] = { .ydepth = 8, .depth = 16, .name = "NV16", .fourcc = V4L2_PIX_FMT_NV16 }, | |
155 | [SH_VEU_FMT_NV24] = { .ydepth = 8, .depth = 24, .name = "NV24", .fourcc = V4L2_PIX_FMT_NV24 }, | |
156 | [SH_VEU_FMT_RGB332] = { .ydepth = 8, .depth = 8, .name = "RGB332", .fourcc = V4L2_PIX_FMT_RGB332 }, | |
157 | [SH_VEU_FMT_RGB444] = { .ydepth = 16, .depth = 16, .name = "RGB444", .fourcc = V4L2_PIX_FMT_RGB444 }, | |
158 | [SH_VEU_FMT_RGB565] = { .ydepth = 16, .depth = 16, .name = "RGB565", .fourcc = V4L2_PIX_FMT_RGB565 }, | |
159 | [SH_VEU_FMT_RGB666] = { .ydepth = 32, .depth = 32, .name = "BGR666", .fourcc = V4L2_PIX_FMT_BGR666 }, | |
160 | [SH_VEU_FMT_RGB24] = { .ydepth = 24, .depth = 24, .name = "RGB24", .fourcc = V4L2_PIX_FMT_RGB24 }, | |
161 | }; | |
162 | ||
163 | #define DEFAULT_IN_VFMT (struct sh_veu_vfmt){ \ | |
164 | .frame = { \ | |
165 | .width = VGA_WIDTH, \ | |
166 | .height = VGA_HEIGHT, \ | |
167 | }, \ | |
168 | .bytesperline = (VGA_WIDTH * sh_veu_fmt[DEFAULT_IN_FMTIDX].ydepth) >> 3, \ | |
169 | .fmt = &sh_veu_fmt[DEFAULT_IN_FMTIDX], \ | |
170 | } | |
171 | ||
172 | #define DEFAULT_OUT_VFMT (struct sh_veu_vfmt){ \ | |
173 | .frame = { \ | |
174 | .width = VGA_WIDTH, \ | |
175 | .height = VGA_HEIGHT, \ | |
176 | }, \ | |
177 | .bytesperline = (VGA_WIDTH * sh_veu_fmt[DEFAULT_OUT_FMTIDX].ydepth) >> 3, \ | |
178 | .fmt = &sh_veu_fmt[DEFAULT_OUT_FMTIDX], \ | |
179 | } | |
180 | ||
181 | /* | |
182 | * TODO: add support for further output formats: | |
183 | * SH_VEU_FMT_NV12, | |
184 | * SH_VEU_FMT_NV16, | |
185 | * SH_VEU_FMT_NV24, | |
186 | * SH_VEU_FMT_RGB332, | |
187 | * SH_VEU_FMT_RGB444, | |
188 | * SH_VEU_FMT_RGB666, | |
189 | * SH_VEU_FMT_RGB24, | |
190 | */ | |
191 | ||
192 | static const int sh_veu_fmt_out[] = { | |
193 | SH_VEU_FMT_RGB565, | |
194 | }; | |
195 | ||
196 | /* | |
197 | * TODO: add support for further input formats: | |
198 | * SH_VEU_FMT_NV16, | |
199 | * SH_VEU_FMT_NV24, | |
200 | * SH_VEU_FMT_RGB565, | |
201 | * SH_VEU_FMT_RGB666, | |
202 | * SH_VEU_FMT_RGB24, | |
203 | */ | |
204 | static const int sh_veu_fmt_in[] = { | |
205 | SH_VEU_FMT_NV12, | |
206 | }; | |
207 | ||
208 | static enum v4l2_colorspace sh_veu_4cc2cspace(u32 fourcc) | |
209 | { | |
210 | switch (fourcc) { | |
211 | default: | |
212 | BUG(); | |
213 | case V4L2_PIX_FMT_NV12: | |
214 | case V4L2_PIX_FMT_NV16: | |
215 | case V4L2_PIX_FMT_NV24: | |
216 | return V4L2_COLORSPACE_JPEG; | |
217 | case V4L2_PIX_FMT_RGB332: | |
218 | case V4L2_PIX_FMT_RGB444: | |
219 | case V4L2_PIX_FMT_RGB565: | |
220 | case V4L2_PIX_FMT_BGR666: | |
221 | case V4L2_PIX_FMT_RGB24: | |
222 | return V4L2_COLORSPACE_SRGB; | |
223 | } | |
224 | } | |
225 | ||
226 | static u32 sh_veu_reg_read(struct sh_veu_dev *veu, unsigned int reg) | |
227 | { | |
228 | return ioread32(veu->base + reg); | |
229 | } | |
230 | ||
231 | static void sh_veu_reg_write(struct sh_veu_dev *veu, unsigned int reg, | |
232 | u32 value) | |
233 | { | |
234 | iowrite32(value, veu->base + reg); | |
235 | } | |
236 | ||
237 | /* ========== mem2mem callbacks ========== */ | |
238 | ||
239 | static void sh_veu_job_abort(void *priv) | |
240 | { | |
241 | struct sh_veu_dev *veu = priv; | |
242 | ||
243 | /* Will cancel the transaction in the next interrupt handler */ | |
244 | veu->aborting = true; | |
245 | } | |
246 | ||
247 | static void sh_veu_lock(void *priv) | |
248 | { | |
249 | struct sh_veu_dev *veu = priv; | |
250 | ||
251 | mutex_lock(&veu->fop_lock); | |
252 | } | |
253 | ||
254 | static void sh_veu_unlock(void *priv) | |
255 | { | |
256 | struct sh_veu_dev *veu = priv; | |
257 | ||
258 | mutex_unlock(&veu->fop_lock); | |
259 | } | |
260 | ||
261 | static void sh_veu_process(struct sh_veu_dev *veu, | |
262 | struct vb2_buffer *src_buf, | |
263 | struct vb2_buffer *dst_buf) | |
264 | { | |
265 | dma_addr_t addr = vb2_dma_contig_plane_dma_addr(dst_buf, 0); | |
266 | ||
267 | sh_veu_reg_write(veu, VEU_DAYR, addr + veu->vfmt_out.offset_y); | |
268 | sh_veu_reg_write(veu, VEU_DACR, veu->vfmt_out.offset_c ? | |
269 | addr + veu->vfmt_out.offset_c : 0); | |
59dad49e MCC |
270 | dev_dbg(veu->dev, "%s(): dst base %lx, y: %x, c: %x\n", __func__, |
271 | (unsigned long)addr, | |
272 | veu->vfmt_out.offset_y, veu->vfmt_out.offset_c); | |
05efa71b GL |
273 | |
274 | addr = vb2_dma_contig_plane_dma_addr(src_buf, 0); | |
275 | sh_veu_reg_write(veu, VEU_SAYR, addr + veu->vfmt_in.offset_y); | |
276 | sh_veu_reg_write(veu, VEU_SACR, veu->vfmt_in.offset_c ? | |
277 | addr + veu->vfmt_in.offset_c : 0); | |
59dad49e MCC |
278 | dev_dbg(veu->dev, "%s(): src base %lx, y: %x, c: %x\n", __func__, |
279 | (unsigned long)addr, | |
280 | veu->vfmt_in.offset_y, veu->vfmt_in.offset_c); | |
05efa71b GL |
281 | |
282 | sh_veu_reg_write(veu, VEU_STR, 1); | |
283 | ||
284 | sh_veu_reg_write(veu, VEU_EIER, 1); /* enable interrupt in VEU */ | |
285 | } | |
286 | ||
287 | /** | |
288 | * sh_veu_device_run() - prepares and starts the device | |
289 | * | |
290 | * This will be called by the framework when it decides to schedule a particular | |
291 | * instance. | |
292 | */ | |
293 | static void sh_veu_device_run(void *priv) | |
294 | { | |
295 | struct sh_veu_dev *veu = priv; | |
296 | struct vb2_buffer *src_buf, *dst_buf; | |
297 | ||
298 | src_buf = v4l2_m2m_next_src_buf(veu->m2m_ctx); | |
299 | dst_buf = v4l2_m2m_next_dst_buf(veu->m2m_ctx); | |
300 | ||
301 | if (src_buf && dst_buf) | |
302 | sh_veu_process(veu, src_buf, dst_buf); | |
303 | } | |
304 | ||
305 | /* ========== video ioctls ========== */ | |
306 | ||
307 | static bool sh_veu_is_streamer(struct sh_veu_dev *veu, struct sh_veu_file *veu_file, | |
308 | enum v4l2_buf_type type) | |
309 | { | |
310 | return (type == V4L2_BUF_TYPE_VIDEO_CAPTURE && | |
311 | veu_file == veu->capture) || | |
312 | (type == V4L2_BUF_TYPE_VIDEO_OUTPUT && | |
313 | veu_file == veu->output); | |
314 | } | |
315 | ||
316 | static int sh_veu_queue_init(void *priv, struct vb2_queue *src_vq, | |
317 | struct vb2_queue *dst_vq); | |
318 | ||
319 | /* | |
320 | * It is not unusual to have video nodes open()ed multiple times. While some | |
321 | * V4L2 operations are non-intrusive, like querying formats and various | |
322 | * parameters, others, like setting formats, starting and stopping streaming, | |
323 | * queuing and dequeuing buffers, directly affect hardware configuration and / | |
324 | * or execution. This function verifies availability of the requested interface | |
325 | * and, if available, reserves it for the requesting user. | |
326 | */ | |
327 | static int sh_veu_stream_init(struct sh_veu_dev *veu, struct sh_veu_file *veu_file, | |
328 | enum v4l2_buf_type type) | |
329 | { | |
330 | struct sh_veu_file **stream; | |
331 | ||
332 | switch (type) { | |
333 | case V4L2_BUF_TYPE_VIDEO_CAPTURE: | |
334 | stream = &veu->capture; | |
335 | break; | |
336 | case V4L2_BUF_TYPE_VIDEO_OUTPUT: | |
337 | stream = &veu->output; | |
338 | break; | |
339 | default: | |
340 | return -EINVAL; | |
341 | } | |
342 | ||
343 | if (*stream == veu_file) | |
344 | return 0; | |
345 | ||
346 | if (*stream) | |
347 | return -EBUSY; | |
348 | ||
349 | *stream = veu_file; | |
350 | ||
351 | return 0; | |
352 | } | |
353 | ||
354 | static int sh_veu_context_init(struct sh_veu_dev *veu) | |
355 | { | |
356 | if (veu->m2m_ctx) | |
357 | return 0; | |
358 | ||
359 | veu->m2m_ctx = v4l2_m2m_ctx_init(veu->m2m_dev, veu, | |
360 | sh_veu_queue_init); | |
361 | ||
627df4bc | 362 | return PTR_ERR_OR_ZERO(veu->m2m_ctx); |
05efa71b GL |
363 | } |
364 | ||
365 | static int sh_veu_querycap(struct file *file, void *priv, | |
366 | struct v4l2_capability *cap) | |
367 | { | |
368 | strlcpy(cap->driver, "sh-veu", sizeof(cap->driver)); | |
369 | strlcpy(cap->card, "sh-mobile VEU", sizeof(cap->card)); | |
370 | strlcpy(cap->bus_info, "platform:sh-veu", sizeof(cap->bus_info)); | |
371 | cap->device_caps = V4L2_CAP_VIDEO_M2M | V4L2_CAP_STREAMING; | |
372 | cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS; | |
373 | ||
374 | return 0; | |
375 | } | |
376 | ||
377 | static int sh_veu_enum_fmt(struct v4l2_fmtdesc *f, const int *fmt, int fmt_num) | |
378 | { | |
379 | if (f->index >= fmt_num) | |
380 | return -EINVAL; | |
381 | ||
382 | strlcpy(f->description, sh_veu_fmt[fmt[f->index]].name, sizeof(f->description)); | |
383 | f->pixelformat = sh_veu_fmt[fmt[f->index]].fourcc; | |
384 | return 0; | |
385 | } | |
386 | ||
387 | static int sh_veu_enum_fmt_vid_cap(struct file *file, void *priv, | |
388 | struct v4l2_fmtdesc *f) | |
389 | { | |
390 | return sh_veu_enum_fmt(f, sh_veu_fmt_out, ARRAY_SIZE(sh_veu_fmt_out)); | |
391 | } | |
392 | ||
393 | static int sh_veu_enum_fmt_vid_out(struct file *file, void *priv, | |
394 | struct v4l2_fmtdesc *f) | |
395 | { | |
396 | return sh_veu_enum_fmt(f, sh_veu_fmt_in, ARRAY_SIZE(sh_veu_fmt_in)); | |
397 | } | |
398 | ||
399 | static struct sh_veu_vfmt *sh_veu_get_vfmt(struct sh_veu_dev *veu, | |
400 | enum v4l2_buf_type type) | |
401 | { | |
402 | switch (type) { | |
403 | case V4L2_BUF_TYPE_VIDEO_CAPTURE: | |
404 | return &veu->vfmt_out; | |
405 | case V4L2_BUF_TYPE_VIDEO_OUTPUT: | |
406 | return &veu->vfmt_in; | |
407 | default: | |
408 | return NULL; | |
409 | } | |
410 | } | |
411 | ||
412 | static int sh_veu_g_fmt(struct sh_veu_file *veu_file, struct v4l2_format *f) | |
413 | { | |
414 | struct v4l2_pix_format *pix = &f->fmt.pix; | |
415 | struct sh_veu_dev *veu = veu_file->veu_dev; | |
416 | struct sh_veu_vfmt *vfmt; | |
417 | ||
418 | vfmt = sh_veu_get_vfmt(veu, f->type); | |
419 | ||
420 | pix->width = vfmt->frame.width; | |
421 | pix->height = vfmt->frame.height; | |
422 | pix->field = V4L2_FIELD_NONE; | |
423 | pix->pixelformat = vfmt->fmt->fourcc; | |
424 | pix->colorspace = sh_veu_4cc2cspace(pix->pixelformat); | |
425 | pix->bytesperline = vfmt->bytesperline; | |
426 | pix->sizeimage = vfmt->bytesperline * pix->height * | |
427 | vfmt->fmt->depth / vfmt->fmt->ydepth; | |
428 | pix->priv = 0; | |
429 | dev_dbg(veu->dev, "%s(): type: %d, size %u @ %ux%u, fmt %x\n", __func__, | |
430 | f->type, pix->sizeimage, pix->width, pix->height, pix->pixelformat); | |
431 | ||
432 | return 0; | |
433 | } | |
434 | ||
435 | static int sh_veu_g_fmt_vid_out(struct file *file, void *priv, | |
436 | struct v4l2_format *f) | |
437 | { | |
438 | return sh_veu_g_fmt(priv, f); | |
439 | } | |
440 | ||
441 | static int sh_veu_g_fmt_vid_cap(struct file *file, void *priv, | |
442 | struct v4l2_format *f) | |
443 | { | |
444 | return sh_veu_g_fmt(priv, f); | |
445 | } | |
446 | ||
447 | static int sh_veu_try_fmt(struct v4l2_format *f, const struct sh_veu_format *fmt) | |
448 | { | |
449 | struct v4l2_pix_format *pix = &f->fmt.pix; | |
450 | unsigned int y_bytes_used; | |
451 | ||
452 | /* | |
453 | * V4L2 specification suggests, that the driver should correct the | |
454 | * format struct if any of the dimensions is unsupported | |
455 | */ | |
456 | switch (pix->field) { | |
457 | default: | |
458 | case V4L2_FIELD_ANY: | |
459 | pix->field = V4L2_FIELD_NONE; | |
460 | /* fall through: continue handling V4L2_FIELD_NONE */ | |
461 | case V4L2_FIELD_NONE: | |
462 | break; | |
463 | } | |
464 | ||
465 | v4l_bound_align_image(&pix->width, MIN_W, MAX_W, ALIGN_W, | |
466 | &pix->height, MIN_H, MAX_H, 0, 0); | |
467 | ||
468 | y_bytes_used = (pix->width * fmt->ydepth) >> 3; | |
469 | ||
470 | if (pix->bytesperline < y_bytes_used) | |
471 | pix->bytesperline = y_bytes_used; | |
472 | pix->sizeimage = pix->height * pix->bytesperline * fmt->depth / fmt->ydepth; | |
473 | ||
474 | pix->pixelformat = fmt->fourcc; | |
475 | pix->colorspace = sh_veu_4cc2cspace(pix->pixelformat); | |
476 | pix->priv = 0; | |
477 | ||
478 | pr_debug("%s(): type: %d, size %u\n", __func__, f->type, pix->sizeimage); | |
479 | ||
480 | return 0; | |
481 | } | |
482 | ||
483 | static const struct sh_veu_format *sh_veu_find_fmt(const struct v4l2_format *f) | |
484 | { | |
485 | const int *fmt; | |
486 | int i, n, dflt; | |
487 | ||
488 | pr_debug("%s(%d;%d)\n", __func__, f->type, f->fmt.pix.field); | |
489 | ||
490 | switch (f->type) { | |
491 | case V4L2_BUF_TYPE_VIDEO_CAPTURE: | |
492 | fmt = sh_veu_fmt_out; | |
493 | n = ARRAY_SIZE(sh_veu_fmt_out); | |
494 | dflt = DEFAULT_OUT_FMTIDX; | |
495 | break; | |
496 | case V4L2_BUF_TYPE_VIDEO_OUTPUT: | |
497 | default: | |
498 | fmt = sh_veu_fmt_in; | |
499 | n = ARRAY_SIZE(sh_veu_fmt_in); | |
500 | dflt = DEFAULT_IN_FMTIDX; | |
501 | break; | |
502 | } | |
503 | ||
504 | for (i = 0; i < n; i++) | |
505 | if (sh_veu_fmt[fmt[i]].fourcc == f->fmt.pix.pixelformat) | |
506 | return &sh_veu_fmt[fmt[i]]; | |
507 | ||
508 | return &sh_veu_fmt[dflt]; | |
509 | } | |
510 | ||
511 | static int sh_veu_try_fmt_vid_cap(struct file *file, void *priv, | |
512 | struct v4l2_format *f) | |
513 | { | |
514 | const struct sh_veu_format *fmt; | |
515 | ||
516 | fmt = sh_veu_find_fmt(f); | |
517 | if (!fmt) | |
518 | /* wrong buffer type */ | |
519 | return -EINVAL; | |
520 | ||
521 | return sh_veu_try_fmt(f, fmt); | |
522 | } | |
523 | ||
524 | static int sh_veu_try_fmt_vid_out(struct file *file, void *priv, | |
525 | struct v4l2_format *f) | |
526 | { | |
527 | const struct sh_veu_format *fmt; | |
528 | ||
529 | fmt = sh_veu_find_fmt(f); | |
530 | if (!fmt) | |
531 | /* wrong buffer type */ | |
532 | return -EINVAL; | |
533 | ||
534 | return sh_veu_try_fmt(f, fmt); | |
535 | } | |
536 | ||
537 | static void sh_veu_colour_offset(struct sh_veu_dev *veu, struct sh_veu_vfmt *vfmt) | |
538 | { | |
539 | /* dst_left and dst_top validity will be verified in CROP / COMPOSE */ | |
540 | unsigned int left = vfmt->frame.left & ~0x03; | |
541 | unsigned int top = vfmt->frame.top; | |
542 | dma_addr_t offset = ((left * veu->vfmt_out.fmt->depth) >> 3) + | |
543 | top * veu->vfmt_out.bytesperline; | |
544 | unsigned int y_line; | |
545 | ||
546 | vfmt->offset_y = offset; | |
547 | ||
548 | switch (vfmt->fmt->fourcc) { | |
549 | case V4L2_PIX_FMT_NV12: | |
550 | case V4L2_PIX_FMT_NV16: | |
551 | case V4L2_PIX_FMT_NV24: | |
552 | y_line = ALIGN(vfmt->frame.width, 16); | |
553 | vfmt->offset_c = offset + y_line * vfmt->frame.height; | |
554 | break; | |
555 | case V4L2_PIX_FMT_RGB332: | |
556 | case V4L2_PIX_FMT_RGB444: | |
557 | case V4L2_PIX_FMT_RGB565: | |
558 | case V4L2_PIX_FMT_BGR666: | |
559 | case V4L2_PIX_FMT_RGB24: | |
560 | vfmt->offset_c = 0; | |
561 | break; | |
562 | default: | |
563 | BUG(); | |
564 | } | |
565 | } | |
566 | ||
567 | static int sh_veu_s_fmt(struct sh_veu_file *veu_file, struct v4l2_format *f) | |
568 | { | |
569 | struct v4l2_pix_format *pix = &f->fmt.pix; | |
570 | struct sh_veu_dev *veu = veu_file->veu_dev; | |
571 | struct sh_veu_vfmt *vfmt; | |
572 | struct vb2_queue *vq; | |
573 | int ret = sh_veu_context_init(veu); | |
574 | if (ret < 0) | |
575 | return ret; | |
576 | ||
577 | vq = v4l2_m2m_get_vq(veu->m2m_ctx, f->type); | |
578 | if (!vq) | |
579 | return -EINVAL; | |
580 | ||
581 | if (vb2_is_busy(vq)) { | |
582 | v4l2_err(&veu_file->veu_dev->v4l2_dev, "%s queue busy\n", __func__); | |
583 | return -EBUSY; | |
584 | } | |
585 | ||
586 | vfmt = sh_veu_get_vfmt(veu, f->type); | |
587 | /* called after try_fmt(), hence vfmt != NULL. Implicit BUG_ON() below */ | |
588 | ||
589 | vfmt->fmt = sh_veu_find_fmt(f); | |
590 | /* vfmt->fmt != NULL following the same argument as above */ | |
591 | vfmt->frame.width = pix->width; | |
592 | vfmt->frame.height = pix->height; | |
593 | vfmt->bytesperline = pix->bytesperline; | |
594 | ||
595 | sh_veu_colour_offset(veu, vfmt); | |
596 | ||
597 | /* | |
598 | * We could also verify and require configuration only if any parameters | |
599 | * actually have changed, but it is unlikely, that the user requests the | |
600 | * same configuration several times without closing the device. | |
601 | */ | |
602 | veu_file->cfg_needed = true; | |
603 | ||
604 | dev_dbg(veu->dev, | |
605 | "Setting format for type %d, wxh: %dx%d, fmt: %x\n", | |
606 | f->type, pix->width, pix->height, vfmt->fmt->fourcc); | |
607 | ||
608 | return 0; | |
609 | } | |
610 | ||
611 | static int sh_veu_s_fmt_vid_cap(struct file *file, void *priv, | |
612 | struct v4l2_format *f) | |
613 | { | |
614 | int ret = sh_veu_try_fmt_vid_cap(file, priv, f); | |
615 | if (ret) | |
616 | return ret; | |
617 | ||
618 | return sh_veu_s_fmt(priv, f); | |
619 | } | |
620 | ||
621 | static int sh_veu_s_fmt_vid_out(struct file *file, void *priv, | |
622 | struct v4l2_format *f) | |
623 | { | |
624 | int ret = sh_veu_try_fmt_vid_out(file, priv, f); | |
625 | if (ret) | |
626 | return ret; | |
627 | ||
628 | return sh_veu_s_fmt(priv, f); | |
629 | } | |
630 | ||
631 | static int sh_veu_reqbufs(struct file *file, void *priv, | |
632 | struct v4l2_requestbuffers *reqbufs) | |
633 | { | |
634 | struct sh_veu_file *veu_file = priv; | |
635 | struct sh_veu_dev *veu = veu_file->veu_dev; | |
636 | int ret = sh_veu_context_init(veu); | |
637 | if (ret < 0) | |
638 | return ret; | |
639 | ||
640 | ret = sh_veu_stream_init(veu, veu_file, reqbufs->type); | |
641 | if (ret < 0) | |
642 | return ret; | |
643 | ||
644 | return v4l2_m2m_reqbufs(file, veu->m2m_ctx, reqbufs); | |
645 | } | |
646 | ||
647 | static int sh_veu_querybuf(struct file *file, void *priv, | |
648 | struct v4l2_buffer *buf) | |
649 | { | |
650 | struct sh_veu_file *veu_file = priv; | |
651 | ||
652 | if (!sh_veu_is_streamer(veu_file->veu_dev, veu_file, buf->type)) | |
653 | return -EBUSY; | |
654 | ||
655 | return v4l2_m2m_querybuf(file, veu_file->veu_dev->m2m_ctx, buf); | |
656 | } | |
657 | ||
658 | static int sh_veu_qbuf(struct file *file, void *priv, struct v4l2_buffer *buf) | |
659 | { | |
660 | struct sh_veu_file *veu_file = priv; | |
661 | ||
662 | dev_dbg(veu_file->veu_dev->dev, "%s(%d)\n", __func__, buf->type); | |
663 | if (!sh_veu_is_streamer(veu_file->veu_dev, veu_file, buf->type)) | |
664 | return -EBUSY; | |
665 | ||
666 | return v4l2_m2m_qbuf(file, veu_file->veu_dev->m2m_ctx, buf); | |
667 | } | |
668 | ||
669 | static int sh_veu_dqbuf(struct file *file, void *priv, struct v4l2_buffer *buf) | |
670 | { | |
671 | struct sh_veu_file *veu_file = priv; | |
672 | ||
673 | dev_dbg(veu_file->veu_dev->dev, "%s(%d)\n", __func__, buf->type); | |
674 | if (!sh_veu_is_streamer(veu_file->veu_dev, veu_file, buf->type)) | |
675 | return -EBUSY; | |
676 | ||
677 | return v4l2_m2m_dqbuf(file, veu_file->veu_dev->m2m_ctx, buf); | |
678 | } | |
679 | ||
680 | static void sh_veu_calc_scale(struct sh_veu_dev *veu, | |
681 | int size_in, int size_out, int crop_out, | |
682 | u32 *mant, u32 *frac, u32 *rep) | |
683 | { | |
684 | u32 fixpoint; | |
685 | ||
686 | /* calculate FRAC and MANT */ | |
687 | *rep = *mant = *frac = 0; | |
688 | ||
689 | if (size_in == size_out) { | |
690 | if (crop_out != size_out) | |
691 | *mant = 1; /* needed for cropping */ | |
692 | return; | |
693 | } | |
694 | ||
695 | /* VEU2H special upscale */ | |
696 | if (veu->is_2h && size_out > size_in) { | |
697 | u32 fixpoint = (4096 * size_in) / size_out; | |
698 | *mant = fixpoint / 4096; | |
699 | *frac = (fixpoint - (*mant * 4096)) & ~0x07; | |
700 | ||
701 | switch (*frac) { | |
702 | case 0x800: | |
703 | *rep = 1; | |
704 | break; | |
705 | case 0x400: | |
706 | *rep = 3; | |
707 | break; | |
708 | case 0x200: | |
709 | *rep = 7; | |
710 | break; | |
711 | } | |
712 | if (*rep) | |
713 | return; | |
714 | } | |
715 | ||
716 | fixpoint = (4096 * (size_in - 1)) / (size_out + 1); | |
717 | *mant = fixpoint / 4096; | |
718 | *frac = fixpoint - (*mant * 4096); | |
719 | ||
720 | if (*frac & 0x07) { | |
721 | /* | |
722 | * FIXME: do we really have to round down twice in the | |
723 | * up-scaling case? | |
724 | */ | |
725 | *frac &= ~0x07; | |
726 | if (size_out > size_in) | |
727 | *frac -= 8; /* round down if scaling up */ | |
728 | else | |
729 | *frac += 8; /* round up if scaling down */ | |
730 | } | |
731 | } | |
732 | ||
733 | static unsigned long sh_veu_scale_v(struct sh_veu_dev *veu, | |
734 | int size_in, int size_out, int crop_out) | |
735 | { | |
736 | u32 mant, frac, value, rep; | |
737 | ||
738 | sh_veu_calc_scale(veu, size_in, size_out, crop_out, &mant, &frac, &rep); | |
739 | ||
740 | /* set scale */ | |
741 | value = (sh_veu_reg_read(veu, VEU_RFCR) & ~0xffff0000) | | |
742 | (((mant << 12) | frac) << 16); | |
743 | ||
744 | sh_veu_reg_write(veu, VEU_RFCR, value); | |
745 | ||
746 | /* set clip */ | |
747 | value = (sh_veu_reg_read(veu, VEU_RFSR) & ~0xffff0000) | | |
748 | (((rep << 12) | crop_out) << 16); | |
749 | ||
750 | sh_veu_reg_write(veu, VEU_RFSR, value); | |
751 | ||
752 | return ALIGN((size_in * crop_out) / size_out, 4); | |
753 | } | |
754 | ||
755 | static unsigned long sh_veu_scale_h(struct sh_veu_dev *veu, | |
756 | int size_in, int size_out, int crop_out) | |
757 | { | |
758 | u32 mant, frac, value, rep; | |
759 | ||
760 | sh_veu_calc_scale(veu, size_in, size_out, crop_out, &mant, &frac, &rep); | |
761 | ||
762 | /* set scale */ | |
763 | value = (sh_veu_reg_read(veu, VEU_RFCR) & ~0xffff) | | |
764 | (mant << 12) | frac; | |
765 | ||
766 | sh_veu_reg_write(veu, VEU_RFCR, value); | |
767 | ||
768 | /* set clip */ | |
769 | value = (sh_veu_reg_read(veu, VEU_RFSR) & ~0xffff) | | |
770 | (rep << 12) | crop_out; | |
771 | ||
772 | sh_veu_reg_write(veu, VEU_RFSR, value); | |
773 | ||
774 | return ALIGN((size_in * crop_out) / size_out, 4); | |
775 | } | |
776 | ||
777 | static void sh_veu_configure(struct sh_veu_dev *veu) | |
778 | { | |
779 | u32 src_width, src_stride, src_height; | |
780 | u32 dst_width, dst_stride, dst_height; | |
781 | u32 real_w, real_h; | |
782 | ||
783 | /* reset VEU */ | |
784 | sh_veu_reg_write(veu, VEU_BSRR, 0x100); | |
785 | ||
786 | src_width = veu->vfmt_in.frame.width; | |
787 | src_height = veu->vfmt_in.frame.height; | |
788 | src_stride = ALIGN(veu->vfmt_in.frame.width, 16); | |
789 | ||
790 | dst_width = real_w = veu->vfmt_out.frame.width; | |
791 | dst_height = real_h = veu->vfmt_out.frame.height; | |
792 | /* Datasheet is unclear - whether it's always number of bytes or not */ | |
793 | dst_stride = veu->vfmt_out.bytesperline; | |
794 | ||
795 | /* | |
796 | * So far real_w == dst_width && real_h == dst_height, but it wasn't | |
797 | * necessarily the case in the original vidix driver, so, it may change | |
798 | * here in the future too. | |
799 | */ | |
800 | src_width = sh_veu_scale_h(veu, src_width, real_w, dst_width); | |
801 | src_height = sh_veu_scale_v(veu, src_height, real_h, dst_height); | |
802 | ||
803 | sh_veu_reg_write(veu, VEU_SWR, src_stride); | |
804 | sh_veu_reg_write(veu, VEU_SSR, src_width | (src_height << 16)); | |
805 | sh_veu_reg_write(veu, VEU_BSSR, 0); /* not using bundle mode */ | |
806 | ||
807 | sh_veu_reg_write(veu, VEU_EDWR, dst_stride); | |
808 | sh_veu_reg_write(veu, VEU_DACR, 0); /* unused for RGB */ | |
809 | ||
810 | sh_veu_reg_write(veu, VEU_SWPR, 0x67); | |
811 | sh_veu_reg_write(veu, VEU_TRCR, (6 << 16) | (0 << 14) | 2 | 4); | |
812 | ||
813 | if (veu->is_2h) { | |
814 | sh_veu_reg_write(veu, VEU_MCR00, 0x0cc5); | |
815 | sh_veu_reg_write(veu, VEU_MCR01, 0x0950); | |
816 | sh_veu_reg_write(veu, VEU_MCR02, 0x0000); | |
817 | ||
818 | sh_veu_reg_write(veu, VEU_MCR10, 0x397f); | |
819 | sh_veu_reg_write(veu, VEU_MCR11, 0x0950); | |
820 | sh_veu_reg_write(veu, VEU_MCR12, 0x3ccd); | |
821 | ||
822 | sh_veu_reg_write(veu, VEU_MCR20, 0x0000); | |
823 | sh_veu_reg_write(veu, VEU_MCR21, 0x0950); | |
824 | sh_veu_reg_write(veu, VEU_MCR22, 0x1023); | |
825 | ||
826 | sh_veu_reg_write(veu, VEU_COFFR, 0x00800010); | |
827 | } | |
828 | } | |
829 | ||
830 | static int sh_veu_streamon(struct file *file, void *priv, | |
831 | enum v4l2_buf_type type) | |
832 | { | |
833 | struct sh_veu_file *veu_file = priv; | |
834 | ||
835 | if (!sh_veu_is_streamer(veu_file->veu_dev, veu_file, type)) | |
836 | return -EBUSY; | |
837 | ||
838 | if (veu_file->cfg_needed) { | |
839 | struct sh_veu_dev *veu = veu_file->veu_dev; | |
840 | veu_file->cfg_needed = false; | |
841 | sh_veu_configure(veu_file->veu_dev); | |
842 | veu->xaction = 0; | |
843 | veu->aborting = false; | |
844 | } | |
845 | ||
846 | return v4l2_m2m_streamon(file, veu_file->veu_dev->m2m_ctx, type); | |
847 | } | |
848 | ||
849 | static int sh_veu_streamoff(struct file *file, void *priv, | |
850 | enum v4l2_buf_type type) | |
851 | { | |
852 | struct sh_veu_file *veu_file = priv; | |
853 | ||
854 | if (!sh_veu_is_streamer(veu_file->veu_dev, veu_file, type)) | |
855 | return -EBUSY; | |
856 | ||
857 | return v4l2_m2m_streamoff(file, veu_file->veu_dev->m2m_ctx, type); | |
858 | } | |
859 | ||
860 | static const struct v4l2_ioctl_ops sh_veu_ioctl_ops = { | |
861 | .vidioc_querycap = sh_veu_querycap, | |
862 | ||
863 | .vidioc_enum_fmt_vid_cap = sh_veu_enum_fmt_vid_cap, | |
864 | .vidioc_g_fmt_vid_cap = sh_veu_g_fmt_vid_cap, | |
865 | .vidioc_try_fmt_vid_cap = sh_veu_try_fmt_vid_cap, | |
866 | .vidioc_s_fmt_vid_cap = sh_veu_s_fmt_vid_cap, | |
867 | ||
868 | .vidioc_enum_fmt_vid_out = sh_veu_enum_fmt_vid_out, | |
869 | .vidioc_g_fmt_vid_out = sh_veu_g_fmt_vid_out, | |
870 | .vidioc_try_fmt_vid_out = sh_veu_try_fmt_vid_out, | |
871 | .vidioc_s_fmt_vid_out = sh_veu_s_fmt_vid_out, | |
872 | ||
873 | .vidioc_reqbufs = sh_veu_reqbufs, | |
874 | .vidioc_querybuf = sh_veu_querybuf, | |
875 | ||
876 | .vidioc_qbuf = sh_veu_qbuf, | |
877 | .vidioc_dqbuf = sh_veu_dqbuf, | |
878 | ||
879 | .vidioc_streamon = sh_veu_streamon, | |
880 | .vidioc_streamoff = sh_veu_streamoff, | |
881 | }; | |
882 | ||
883 | /* ========== Queue operations ========== */ | |
884 | ||
885 | static int sh_veu_queue_setup(struct vb2_queue *vq, | |
886 | const struct v4l2_format *f, | |
887 | unsigned int *nbuffers, unsigned int *nplanes, | |
888 | unsigned int sizes[], void *alloc_ctxs[]) | |
889 | { | |
890 | struct sh_veu_dev *veu = vb2_get_drv_priv(vq); | |
891 | struct sh_veu_vfmt *vfmt; | |
892 | unsigned int size, count = *nbuffers; | |
893 | ||
894 | if (f) { | |
895 | const struct v4l2_pix_format *pix = &f->fmt.pix; | |
896 | const struct sh_veu_format *fmt = sh_veu_find_fmt(f); | |
897 | struct v4l2_format ftmp = *f; | |
898 | ||
899 | if (fmt->fourcc != pix->pixelformat) | |
900 | return -EINVAL; | |
901 | sh_veu_try_fmt(&ftmp, fmt); | |
902 | if (ftmp.fmt.pix.width != pix->width || | |
903 | ftmp.fmt.pix.height != pix->height) | |
904 | return -EINVAL; | |
697a6d23 KM |
905 | size = pix->bytesperline ? pix->bytesperline * pix->height * fmt->depth / fmt->ydepth : |
906 | pix->width * pix->height * fmt->depth / fmt->ydepth; | |
05efa71b GL |
907 | } else { |
908 | vfmt = sh_veu_get_vfmt(veu, vq->type); | |
697a6d23 | 909 | size = vfmt->bytesperline * vfmt->frame.height * vfmt->fmt->depth / vfmt->fmt->ydepth; |
05efa71b GL |
910 | } |
911 | ||
912 | if (count < 2) | |
913 | *nbuffers = count = 2; | |
914 | ||
915 | if (size * count > VIDEO_MEM_LIMIT) { | |
916 | count = VIDEO_MEM_LIMIT / size; | |
917 | *nbuffers = count; | |
918 | } | |
919 | ||
920 | *nplanes = 1; | |
921 | sizes[0] = size; | |
922 | alloc_ctxs[0] = veu->alloc_ctx; | |
923 | ||
924 | dev_dbg(veu->dev, "get %d buffer(s) of size %d each.\n", count, size); | |
925 | ||
926 | return 0; | |
927 | } | |
928 | ||
929 | static int sh_veu_buf_prepare(struct vb2_buffer *vb) | |
930 | { | |
931 | struct sh_veu_dev *veu = vb2_get_drv_priv(vb->vb2_queue); | |
932 | struct sh_veu_vfmt *vfmt; | |
933 | unsigned int sizeimage; | |
934 | ||
935 | vfmt = sh_veu_get_vfmt(veu, vb->vb2_queue->type); | |
936 | sizeimage = vfmt->bytesperline * vfmt->frame.height * | |
937 | vfmt->fmt->depth / vfmt->fmt->ydepth; | |
938 | ||
939 | if (vb2_plane_size(vb, 0) < sizeimage) { | |
940 | dev_dbg(veu->dev, "%s data will not fit into plane (%lu < %u)\n", | |
941 | __func__, vb2_plane_size(vb, 0), sizeimage); | |
942 | return -EINVAL; | |
943 | } | |
944 | ||
945 | vb2_set_plane_payload(vb, 0, sizeimage); | |
946 | ||
947 | return 0; | |
948 | } | |
949 | ||
950 | static void sh_veu_buf_queue(struct vb2_buffer *vb) | |
951 | { | |
952 | struct sh_veu_dev *veu = vb2_get_drv_priv(vb->vb2_queue); | |
953 | dev_dbg(veu->dev, "%s(%d)\n", __func__, vb->v4l2_buf.type); | |
954 | v4l2_m2m_buf_queue(veu->m2m_ctx, vb); | |
955 | } | |
956 | ||
957 | static void sh_veu_wait_prepare(struct vb2_queue *q) | |
958 | { | |
959 | sh_veu_unlock(vb2_get_drv_priv(q)); | |
960 | } | |
961 | ||
962 | static void sh_veu_wait_finish(struct vb2_queue *q) | |
963 | { | |
964 | sh_veu_lock(vb2_get_drv_priv(q)); | |
965 | } | |
966 | ||
967 | static const struct vb2_ops sh_veu_qops = { | |
968 | .queue_setup = sh_veu_queue_setup, | |
969 | .buf_prepare = sh_veu_buf_prepare, | |
970 | .buf_queue = sh_veu_buf_queue, | |
971 | .wait_prepare = sh_veu_wait_prepare, | |
972 | .wait_finish = sh_veu_wait_finish, | |
973 | }; | |
974 | ||
975 | static int sh_veu_queue_init(void *priv, struct vb2_queue *src_vq, | |
976 | struct vb2_queue *dst_vq) | |
977 | { | |
978 | int ret; | |
979 | ||
980 | memset(src_vq, 0, sizeof(*src_vq)); | |
981 | src_vq->type = V4L2_BUF_TYPE_VIDEO_OUTPUT; | |
982 | src_vq->io_modes = VB2_MMAP | VB2_USERPTR; | |
983 | src_vq->drv_priv = priv; | |
984 | src_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer); | |
985 | src_vq->ops = &sh_veu_qops; | |
986 | src_vq->mem_ops = &vb2_dma_contig_memops; | |
987 | ||
988 | ret = vb2_queue_init(src_vq); | |
989 | if (ret < 0) | |
990 | return ret; | |
991 | ||
992 | memset(dst_vq, 0, sizeof(*dst_vq)); | |
993 | dst_vq->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; | |
994 | dst_vq->io_modes = VB2_MMAP | VB2_USERPTR; | |
995 | dst_vq->drv_priv = priv; | |
996 | dst_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer); | |
997 | dst_vq->ops = &sh_veu_qops; | |
998 | dst_vq->mem_ops = &vb2_dma_contig_memops; | |
999 | ||
1000 | return vb2_queue_init(dst_vq); | |
1001 | } | |
1002 | ||
1003 | /* ========== File operations ========== */ | |
1004 | ||
1005 | static int sh_veu_open(struct file *file) | |
1006 | { | |
1007 | struct sh_veu_dev *veu = video_drvdata(file); | |
1008 | struct sh_veu_file *veu_file; | |
1009 | ||
1010 | veu_file = kzalloc(sizeof(*veu_file), GFP_KERNEL); | |
1011 | if (!veu_file) | |
1012 | return -ENOMEM; | |
1013 | ||
1014 | veu_file->veu_dev = veu; | |
1015 | veu_file->cfg_needed = true; | |
1016 | ||
1017 | file->private_data = veu_file; | |
1018 | ||
1019 | pm_runtime_get_sync(veu->dev); | |
1020 | ||
1021 | dev_dbg(veu->dev, "Created instance %p\n", veu_file); | |
1022 | ||
1023 | return 0; | |
1024 | } | |
1025 | ||
1026 | static int sh_veu_release(struct file *file) | |
1027 | { | |
1028 | struct sh_veu_dev *veu = video_drvdata(file); | |
1029 | struct sh_veu_file *veu_file = file->private_data; | |
1030 | ||
1031 | dev_dbg(veu->dev, "Releasing instance %p\n", veu_file); | |
1032 | ||
05efa71b GL |
1033 | if (veu_file == veu->capture) { |
1034 | veu->capture = NULL; | |
1035 | vb2_queue_release(v4l2_m2m_get_vq(veu->m2m_ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE)); | |
1036 | } | |
1037 | ||
1038 | if (veu_file == veu->output) { | |
1039 | veu->output = NULL; | |
1040 | vb2_queue_release(v4l2_m2m_get_vq(veu->m2m_ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT)); | |
1041 | } | |
1042 | ||
1043 | if (!veu->output && !veu->capture && veu->m2m_ctx) { | |
1044 | v4l2_m2m_ctx_release(veu->m2m_ctx); | |
1045 | veu->m2m_ctx = NULL; | |
1046 | } | |
1047 | ||
6abb3cf2 KM |
1048 | pm_runtime_put(veu->dev); |
1049 | ||
05efa71b GL |
1050 | kfree(veu_file); |
1051 | ||
1052 | return 0; | |
1053 | } | |
1054 | ||
1055 | static unsigned int sh_veu_poll(struct file *file, | |
1056 | struct poll_table_struct *wait) | |
1057 | { | |
1058 | struct sh_veu_file *veu_file = file->private_data; | |
1059 | ||
1060 | return v4l2_m2m_poll(file, veu_file->veu_dev->m2m_ctx, wait); | |
1061 | } | |
1062 | ||
1063 | static int sh_veu_mmap(struct file *file, struct vm_area_struct *vma) | |
1064 | { | |
1065 | struct sh_veu_file *veu_file = file->private_data; | |
1066 | ||
1067 | return v4l2_m2m_mmap(file, veu_file->veu_dev->m2m_ctx, vma); | |
1068 | } | |
1069 | ||
1070 | static const struct v4l2_file_operations sh_veu_fops = { | |
1071 | .owner = THIS_MODULE, | |
1072 | .open = sh_veu_open, | |
1073 | .release = sh_veu_release, | |
1074 | .poll = sh_veu_poll, | |
1075 | .unlocked_ioctl = video_ioctl2, | |
1076 | .mmap = sh_veu_mmap, | |
1077 | }; | |
1078 | ||
1079 | static const struct video_device sh_veu_videodev = { | |
1080 | .name = "sh-veu", | |
1081 | .fops = &sh_veu_fops, | |
1082 | .ioctl_ops = &sh_veu_ioctl_ops, | |
1083 | .minor = -1, | |
1084 | .release = video_device_release_empty, | |
1085 | .vfl_dir = VFL_DIR_M2M, | |
1086 | }; | |
1087 | ||
1088 | static const struct v4l2_m2m_ops sh_veu_m2m_ops = { | |
1089 | .device_run = sh_veu_device_run, | |
1090 | .job_abort = sh_veu_job_abort, | |
1091 | }; | |
1092 | ||
1093 | static irqreturn_t sh_veu_bh(int irq, void *dev_id) | |
1094 | { | |
1095 | struct sh_veu_dev *veu = dev_id; | |
1096 | ||
1097 | if (veu->xaction == MEM2MEM_DEF_TRANSLEN || veu->aborting) { | |
1098 | v4l2_m2m_job_finish(veu->m2m_dev, veu->m2m_ctx); | |
1099 | veu->xaction = 0; | |
1100 | } else { | |
1101 | sh_veu_device_run(veu); | |
1102 | } | |
1103 | ||
1104 | return IRQ_HANDLED; | |
1105 | } | |
1106 | ||
1107 | static irqreturn_t sh_veu_isr(int irq, void *dev_id) | |
1108 | { | |
1109 | struct sh_veu_dev *veu = dev_id; | |
1110 | struct vb2_buffer *dst; | |
1111 | struct vb2_buffer *src; | |
1112 | u32 status = sh_veu_reg_read(veu, VEU_EVTR); | |
1113 | ||
1114 | /* bundle read mode not used */ | |
1115 | if (!(status & 1)) | |
1116 | return IRQ_NONE; | |
1117 | ||
1118 | /* disable interrupt in VEU */ | |
1119 | sh_veu_reg_write(veu, VEU_EIER, 0); | |
1120 | /* halt operation */ | |
1121 | sh_veu_reg_write(veu, VEU_STR, 0); | |
1122 | /* ack int, write 0 to clear bits */ | |
1123 | sh_veu_reg_write(veu, VEU_EVTR, status & ~1); | |
1124 | ||
1125 | /* conversion completed */ | |
1126 | dst = v4l2_m2m_dst_buf_remove(veu->m2m_ctx); | |
1127 | src = v4l2_m2m_src_buf_remove(veu->m2m_ctx); | |
1128 | if (!src || !dst) | |
1129 | return IRQ_NONE; | |
1130 | ||
1131 | spin_lock(&veu->lock); | |
1132 | v4l2_m2m_buf_done(src, VB2_BUF_STATE_DONE); | |
1133 | v4l2_m2m_buf_done(dst, VB2_BUF_STATE_DONE); | |
1134 | spin_unlock(&veu->lock); | |
1135 | ||
1136 | veu->xaction++; | |
1137 | ||
9166e1aa | 1138 | return IRQ_WAKE_THREAD; |
05efa71b GL |
1139 | } |
1140 | ||
3151d14a | 1141 | static int sh_veu_probe(struct platform_device *pdev) |
05efa71b GL |
1142 | { |
1143 | struct sh_veu_dev *veu; | |
1144 | struct resource *reg_res; | |
1145 | struct video_device *vdev; | |
1146 | int irq, ret; | |
1147 | ||
1148 | reg_res = platform_get_resource(pdev, IORESOURCE_MEM, 0); | |
1149 | irq = platform_get_irq(pdev, 0); | |
1150 | ||
1151 | if (!reg_res || irq <= 0) { | |
1152 | dev_err(&pdev->dev, "Insufficient VEU platform information.\n"); | |
1153 | return -ENODEV; | |
1154 | } | |
1155 | ||
1156 | veu = devm_kzalloc(&pdev->dev, sizeof(*veu), GFP_KERNEL); | |
1157 | if (!veu) | |
1158 | return -ENOMEM; | |
1159 | ||
1160 | veu->is_2h = resource_size(reg_res) == 0x22c; | |
1161 | ||
f2b4dc1a SK |
1162 | veu->base = devm_ioremap_resource(&pdev->dev, reg_res); |
1163 | if (IS_ERR(veu->base)) | |
1164 | return PTR_ERR(veu->base); | |
05efa71b GL |
1165 | |
1166 | ret = devm_request_threaded_irq(&pdev->dev, irq, sh_veu_isr, sh_veu_bh, | |
1167 | 0, "veu", veu); | |
1168 | if (ret < 0) | |
1169 | return ret; | |
1170 | ||
1171 | ret = v4l2_device_register(&pdev->dev, &veu->v4l2_dev); | |
1172 | if (ret < 0) { | |
1173 | dev_err(&pdev->dev, "Error registering v4l2 device\n"); | |
1174 | return ret; | |
1175 | } | |
1176 | ||
1177 | vdev = &veu->vdev; | |
1178 | ||
1179 | veu->alloc_ctx = vb2_dma_contig_init_ctx(&pdev->dev); | |
1180 | if (IS_ERR(veu->alloc_ctx)) { | |
1181 | ret = PTR_ERR(veu->alloc_ctx); | |
1182 | goto einitctx; | |
1183 | } | |
1184 | ||
1185 | *vdev = sh_veu_videodev; | |
1186 | spin_lock_init(&veu->lock); | |
1187 | mutex_init(&veu->fop_lock); | |
1188 | vdev->lock = &veu->fop_lock; | |
1189 | ||
1190 | video_set_drvdata(vdev, veu); | |
1191 | ||
1192 | veu->dev = &pdev->dev; | |
1193 | veu->vfmt_out = DEFAULT_OUT_VFMT; | |
1194 | veu->vfmt_in = DEFAULT_IN_VFMT; | |
1195 | ||
1196 | veu->m2m_dev = v4l2_m2m_init(&sh_veu_m2m_ops); | |
1197 | if (IS_ERR(veu->m2m_dev)) { | |
1198 | ret = PTR_ERR(veu->m2m_dev); | |
1199 | v4l2_err(&veu->v4l2_dev, "Failed to init mem2mem device: %d\n", ret); | |
1200 | goto em2minit; | |
1201 | } | |
1202 | ||
1203 | pm_runtime_enable(&pdev->dev); | |
1204 | pm_runtime_resume(&pdev->dev); | |
1205 | ||
1206 | ret = video_register_device(vdev, VFL_TYPE_GRABBER, -1); | |
1207 | pm_runtime_suspend(&pdev->dev); | |
1208 | if (ret < 0) | |
1209 | goto evidreg; | |
1210 | ||
1211 | return ret; | |
1212 | ||
1213 | evidreg: | |
1214 | pm_runtime_disable(&pdev->dev); | |
1215 | v4l2_m2m_release(veu->m2m_dev); | |
1216 | em2minit: | |
1217 | vb2_dma_contig_cleanup_ctx(veu->alloc_ctx); | |
1218 | einitctx: | |
1219 | v4l2_device_unregister(&veu->v4l2_dev); | |
1220 | return ret; | |
1221 | } | |
1222 | ||
3151d14a | 1223 | static int sh_veu_remove(struct platform_device *pdev) |
05efa71b GL |
1224 | { |
1225 | struct v4l2_device *v4l2_dev = platform_get_drvdata(pdev); | |
1226 | struct sh_veu_dev *veu = container_of(v4l2_dev, | |
1227 | struct sh_veu_dev, v4l2_dev); | |
1228 | ||
1229 | video_unregister_device(&veu->vdev); | |
1230 | pm_runtime_disable(&pdev->dev); | |
1231 | v4l2_m2m_release(veu->m2m_dev); | |
1232 | vb2_dma_contig_cleanup_ctx(veu->alloc_ctx); | |
1233 | v4l2_device_unregister(&veu->v4l2_dev); | |
1234 | ||
1235 | return 0; | |
1236 | } | |
1237 | ||
1238 | static struct platform_driver __refdata sh_veu_pdrv = { | |
3151d14a | 1239 | .remove = sh_veu_remove, |
05efa71b GL |
1240 | .driver = { |
1241 | .name = "sh_veu", | |
1242 | .owner = THIS_MODULE, | |
1243 | }, | |
1244 | }; | |
1245 | ||
6647b9c0 | 1246 | module_platform_driver_probe(sh_veu_pdrv, sh_veu_probe); |
05efa71b GL |
1247 | |
1248 | MODULE_DESCRIPTION("sh-mobile VEU mem2mem driver"); | |
1249 | MODULE_AUTHOR("Guennadi Liakhovetski, <g.liakhovetski@gmx.de>"); | |
1250 | MODULE_LICENSE("GPL v2"); |