Commit | Line | Data |
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a81fb9b2 GL |
1 | /* |
2 | * SuperH Video Output Unit (VOU) driver | |
3 | * | |
4 | * Copyright (C) 2010, Guennadi Liakhovetski <g.liakhovetski@gmx.de> | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License version 2 as | |
8 | * published by the Free Software Foundation. | |
9 | */ | |
10 | ||
11 | #include <linux/dma-mapping.h> | |
12 | #include <linux/delay.h> | |
13 | #include <linux/errno.h> | |
14 | #include <linux/fs.h> | |
15 | #include <linux/i2c.h> | |
16 | #include <linux/init.h> | |
17 | #include <linux/interrupt.h> | |
18 | #include <linux/kernel.h> | |
19 | #include <linux/platform_device.h> | |
20 | #include <linux/pm_runtime.h> | |
3b23db39 | 21 | #include <linux/slab.h> |
a81fb9b2 | 22 | #include <linux/videodev2.h> |
7a707b89 | 23 | #include <linux/module.h> |
a81fb9b2 GL |
24 | |
25 | #include <media/sh_vou.h> | |
26 | #include <media/v4l2-common.h> | |
27 | #include <media/v4l2-device.h> | |
28 | #include <media/v4l2-ioctl.h> | |
29 | #include <media/v4l2-mediabus.h> | |
30 | #include <media/videobuf-dma-contig.h> | |
31 | ||
32 | /* Mirror addresses are not available for all registers */ | |
33 | #define VOUER 0 | |
34 | #define VOUCR 4 | |
35 | #define VOUSTR 8 | |
36 | #define VOUVCR 0xc | |
37 | #define VOUISR 0x10 | |
38 | #define VOUBCR 0x14 | |
39 | #define VOUDPR 0x18 | |
40 | #define VOUDSR 0x1c | |
41 | #define VOUVPR 0x20 | |
42 | #define VOUIR 0x24 | |
43 | #define VOUSRR 0x28 | |
44 | #define VOUMSR 0x2c | |
45 | #define VOUHIR 0x30 | |
46 | #define VOUDFR 0x34 | |
47 | #define VOUAD1R 0x38 | |
48 | #define VOUAD2R 0x3c | |
49 | #define VOUAIR 0x40 | |
50 | #define VOUSWR 0x44 | |
51 | #define VOURCR 0x48 | |
52 | #define VOURPR 0x50 | |
53 | ||
54 | enum sh_vou_status { | |
55 | SH_VOU_IDLE, | |
56 | SH_VOU_INITIALISING, | |
57 | SH_VOU_RUNNING, | |
58 | }; | |
59 | ||
60 | #define VOU_MAX_IMAGE_WIDTH 720 | |
765fe17c | 61 | #define VOU_MAX_IMAGE_HEIGHT 576 |
a81fb9b2 GL |
62 | |
63 | struct sh_vou_device { | |
64 | struct v4l2_device v4l2_dev; | |
d079f99f | 65 | struct video_device vdev; |
a81fb9b2 GL |
66 | struct sh_vou_pdata *pdata; |
67 | spinlock_t lock; | |
68 | void __iomem *base; | |
69 | /* State information */ | |
70 | struct v4l2_pix_format pix; | |
71 | struct v4l2_rect rect; | |
72 | struct list_head queue; | |
73 | v4l2_std_id std; | |
74 | int pix_idx; | |
75 | struct videobuf_buffer *active; | |
76 | enum sh_vou_status status; | |
69756693 | 77 | struct mutex fop_lock; |
a81fb9b2 GL |
78 | }; |
79 | ||
80 | struct sh_vou_file { | |
c5f98085 | 81 | struct v4l2_fh fh; |
a81fb9b2 GL |
82 | struct videobuf_queue vbq; |
83 | }; | |
84 | ||
85 | /* Register access routines for sides A, B and mirror addresses */ | |
86 | static void sh_vou_reg_a_write(struct sh_vou_device *vou_dev, unsigned int reg, | |
87 | u32 value) | |
88 | { | |
89 | __raw_writel(value, vou_dev->base + reg); | |
90 | } | |
91 | ||
92 | static void sh_vou_reg_ab_write(struct sh_vou_device *vou_dev, unsigned int reg, | |
93 | u32 value) | |
94 | { | |
95 | __raw_writel(value, vou_dev->base + reg); | |
96 | __raw_writel(value, vou_dev->base + reg + 0x1000); | |
97 | } | |
98 | ||
99 | static void sh_vou_reg_m_write(struct sh_vou_device *vou_dev, unsigned int reg, | |
100 | u32 value) | |
101 | { | |
102 | __raw_writel(value, vou_dev->base + reg + 0x2000); | |
103 | } | |
104 | ||
105 | static u32 sh_vou_reg_a_read(struct sh_vou_device *vou_dev, unsigned int reg) | |
106 | { | |
107 | return __raw_readl(vou_dev->base + reg); | |
108 | } | |
109 | ||
110 | static void sh_vou_reg_a_set(struct sh_vou_device *vou_dev, unsigned int reg, | |
111 | u32 value, u32 mask) | |
112 | { | |
113 | u32 old = __raw_readl(vou_dev->base + reg); | |
114 | ||
115 | value = (value & mask) | (old & ~mask); | |
116 | __raw_writel(value, vou_dev->base + reg); | |
117 | } | |
118 | ||
119 | static void sh_vou_reg_b_set(struct sh_vou_device *vou_dev, unsigned int reg, | |
120 | u32 value, u32 mask) | |
121 | { | |
122 | sh_vou_reg_a_set(vou_dev, reg + 0x1000, value, mask); | |
123 | } | |
124 | ||
125 | static void sh_vou_reg_ab_set(struct sh_vou_device *vou_dev, unsigned int reg, | |
126 | u32 value, u32 mask) | |
127 | { | |
128 | sh_vou_reg_a_set(vou_dev, reg, value, mask); | |
129 | sh_vou_reg_b_set(vou_dev, reg, value, mask); | |
130 | } | |
131 | ||
132 | struct sh_vou_fmt { | |
133 | u32 pfmt; | |
134 | char *desc; | |
135 | unsigned char bpp; | |
136 | unsigned char rgb; | |
137 | unsigned char yf; | |
138 | unsigned char pkf; | |
139 | }; | |
140 | ||
141 | /* Further pixel formats can be added */ | |
142 | static struct sh_vou_fmt vou_fmt[] = { | |
143 | { | |
144 | .pfmt = V4L2_PIX_FMT_NV12, | |
145 | .bpp = 12, | |
146 | .desc = "YVU420 planar", | |
147 | .yf = 0, | |
148 | .rgb = 0, | |
149 | }, | |
150 | { | |
151 | .pfmt = V4L2_PIX_FMT_NV16, | |
152 | .bpp = 16, | |
153 | .desc = "YVYU planar", | |
154 | .yf = 1, | |
155 | .rgb = 0, | |
156 | }, | |
157 | { | |
158 | .pfmt = V4L2_PIX_FMT_RGB24, | |
159 | .bpp = 24, | |
160 | .desc = "RGB24", | |
161 | .pkf = 2, | |
162 | .rgb = 1, | |
163 | }, | |
164 | { | |
165 | .pfmt = V4L2_PIX_FMT_RGB565, | |
166 | .bpp = 16, | |
167 | .desc = "RGB565", | |
168 | .pkf = 3, | |
169 | .rgb = 1, | |
170 | }, | |
171 | { | |
172 | .pfmt = V4L2_PIX_FMT_RGB565X, | |
173 | .bpp = 16, | |
174 | .desc = "RGB565 byteswapped", | |
175 | .pkf = 3, | |
176 | .rgb = 1, | |
177 | }, | |
178 | }; | |
179 | ||
180 | static void sh_vou_schedule_next(struct sh_vou_device *vou_dev, | |
181 | struct videobuf_buffer *vb) | |
182 | { | |
183 | dma_addr_t addr1, addr2; | |
184 | ||
185 | addr1 = videobuf_to_dma_contig(vb); | |
186 | switch (vou_dev->pix.pixelformat) { | |
187 | case V4L2_PIX_FMT_NV12: | |
188 | case V4L2_PIX_FMT_NV16: | |
189 | addr2 = addr1 + vou_dev->pix.width * vou_dev->pix.height; | |
190 | break; | |
191 | default: | |
192 | addr2 = 0; | |
193 | } | |
194 | ||
195 | sh_vou_reg_m_write(vou_dev, VOUAD1R, addr1); | |
196 | sh_vou_reg_m_write(vou_dev, VOUAD2R, addr2); | |
197 | } | |
198 | ||
199 | static void sh_vou_stream_start(struct sh_vou_device *vou_dev, | |
200 | struct videobuf_buffer *vb) | |
201 | { | |
202 | unsigned int row_coeff; | |
203 | #ifdef __LITTLE_ENDIAN | |
204 | u32 dataswap = 7; | |
205 | #else | |
206 | u32 dataswap = 0; | |
207 | #endif | |
208 | ||
209 | switch (vou_dev->pix.pixelformat) { | |
bc1ebd70 | 210 | default: |
a81fb9b2 GL |
211 | case V4L2_PIX_FMT_NV12: |
212 | case V4L2_PIX_FMT_NV16: | |
213 | row_coeff = 1; | |
214 | break; | |
215 | case V4L2_PIX_FMT_RGB565: | |
216 | dataswap ^= 1; | |
217 | case V4L2_PIX_FMT_RGB565X: | |
218 | row_coeff = 2; | |
219 | break; | |
220 | case V4L2_PIX_FMT_RGB24: | |
221 | row_coeff = 3; | |
222 | break; | |
223 | } | |
224 | ||
225 | sh_vou_reg_a_write(vou_dev, VOUSWR, dataswap); | |
226 | sh_vou_reg_ab_write(vou_dev, VOUAIR, vou_dev->pix.width * row_coeff); | |
227 | sh_vou_schedule_next(vou_dev, vb); | |
228 | } | |
229 | ||
230 | static void free_buffer(struct videobuf_queue *vq, struct videobuf_buffer *vb) | |
231 | { | |
232 | BUG_ON(in_interrupt()); | |
233 | ||
234 | /* Wait until this buffer is no longer in STATE_QUEUED or STATE_ACTIVE */ | |
0e0809a5 | 235 | videobuf_waiton(vq, vb, 0, 0); |
a81fb9b2 GL |
236 | videobuf_dma_contig_free(vq, vb); |
237 | vb->state = VIDEOBUF_NEEDS_INIT; | |
238 | } | |
239 | ||
69756693 | 240 | /* Locking: caller holds fop_lock mutex */ |
a81fb9b2 GL |
241 | static int sh_vou_buf_setup(struct videobuf_queue *vq, unsigned int *count, |
242 | unsigned int *size) | |
243 | { | |
244 | struct video_device *vdev = vq->priv_data; | |
245 | struct sh_vou_device *vou_dev = video_get_drvdata(vdev); | |
246 | ||
247 | *size = vou_fmt[vou_dev->pix_idx].bpp * vou_dev->pix.width * | |
248 | vou_dev->pix.height / 8; | |
249 | ||
250 | if (*count < 2) | |
251 | *count = 2; | |
252 | ||
253 | /* Taking into account maximum frame size, *count will stay >= 2 */ | |
254 | if (PAGE_ALIGN(*size) * *count > 4 * 1024 * 1024) | |
255 | *count = 4 * 1024 * 1024 / PAGE_ALIGN(*size); | |
256 | ||
d899eddd LP |
257 | dev_dbg(vou_dev->v4l2_dev.dev, "%s(): count=%d, size=%d\n", __func__, |
258 | *count, *size); | |
a81fb9b2 GL |
259 | |
260 | return 0; | |
261 | } | |
262 | ||
69756693 | 263 | /* Locking: caller holds fop_lock mutex */ |
a81fb9b2 GL |
264 | static int sh_vou_buf_prepare(struct videobuf_queue *vq, |
265 | struct videobuf_buffer *vb, | |
266 | enum v4l2_field field) | |
267 | { | |
268 | struct video_device *vdev = vq->priv_data; | |
269 | struct sh_vou_device *vou_dev = video_get_drvdata(vdev); | |
270 | struct v4l2_pix_format *pix = &vou_dev->pix; | |
271 | int bytes_per_line = vou_fmt[vou_dev->pix_idx].bpp * pix->width / 8; | |
272 | int ret; | |
273 | ||
d899eddd | 274 | dev_dbg(vou_dev->v4l2_dev.dev, "%s()\n", __func__); |
a81fb9b2 GL |
275 | |
276 | if (vb->width != pix->width || | |
277 | vb->height != pix->height || | |
278 | vb->field != pix->field) { | |
279 | vb->width = pix->width; | |
280 | vb->height = pix->height; | |
281 | vb->field = field; | |
282 | if (vb->state != VIDEOBUF_NEEDS_INIT) | |
283 | free_buffer(vq, vb); | |
284 | } | |
285 | ||
286 | vb->size = vb->height * bytes_per_line; | |
287 | if (vb->baddr && vb->bsize < vb->size) { | |
288 | /* User buffer too small */ | |
3f8965e0 | 289 | dev_warn(vq->dev, "User buffer too small: [%zu] @ %lx\n", |
a81fb9b2 GL |
290 | vb->bsize, vb->baddr); |
291 | return -EINVAL; | |
292 | } | |
293 | ||
294 | if (vb->state == VIDEOBUF_NEEDS_INIT) { | |
295 | ret = videobuf_iolock(vq, vb, NULL); | |
296 | if (ret < 0) { | |
297 | dev_warn(vq->dev, "IOLOCK buf-type %d: %d\n", | |
298 | vb->memory, ret); | |
299 | return ret; | |
300 | } | |
301 | vb->state = VIDEOBUF_PREPARED; | |
302 | } | |
303 | ||
d899eddd | 304 | dev_dbg(vou_dev->v4l2_dev.dev, |
3f8965e0 | 305 | "%s(): fmt #%d, %u bytes per line, phys %pad, type %d, state %d\n", |
a81fb9b2 | 306 | __func__, vou_dev->pix_idx, bytes_per_line, |
3f8965e0 LP |
307 | ({ dma_addr_t addr = videobuf_to_dma_contig(vb); &addr; }), |
308 | vb->memory, vb->state); | |
a81fb9b2 GL |
309 | |
310 | return 0; | |
311 | } | |
312 | ||
69756693 | 313 | /* Locking: caller holds fop_lock mutex and vq->irqlock spinlock */ |
a81fb9b2 GL |
314 | static void sh_vou_buf_queue(struct videobuf_queue *vq, |
315 | struct videobuf_buffer *vb) | |
316 | { | |
317 | struct video_device *vdev = vq->priv_data; | |
318 | struct sh_vou_device *vou_dev = video_get_drvdata(vdev); | |
319 | ||
d899eddd | 320 | dev_dbg(vou_dev->v4l2_dev.dev, "%s()\n", __func__); |
a81fb9b2 GL |
321 | |
322 | vb->state = VIDEOBUF_QUEUED; | |
323 | list_add_tail(&vb->queue, &vou_dev->queue); | |
324 | ||
325 | if (vou_dev->status == SH_VOU_RUNNING) { | |
326 | return; | |
327 | } else if (!vou_dev->active) { | |
328 | vou_dev->active = vb; | |
329 | /* Start from side A: we use mirror addresses, so, set B */ | |
330 | sh_vou_reg_a_write(vou_dev, VOURPR, 1); | |
d899eddd LP |
331 | dev_dbg(vou_dev->v4l2_dev.dev, "%s: first buffer status 0x%x\n", |
332 | __func__, sh_vou_reg_a_read(vou_dev, VOUSTR)); | |
a81fb9b2 GL |
333 | sh_vou_schedule_next(vou_dev, vb); |
334 | /* Only activate VOU after the second buffer */ | |
335 | } else if (vou_dev->active->queue.next == &vb->queue) { | |
336 | /* Second buffer - initialise register side B */ | |
337 | sh_vou_reg_a_write(vou_dev, VOURPR, 0); | |
338 | sh_vou_stream_start(vou_dev, vb); | |
339 | ||
340 | /* Register side switching with frame VSYNC */ | |
341 | sh_vou_reg_a_write(vou_dev, VOURCR, 5); | |
d899eddd LP |
342 | dev_dbg(vou_dev->v4l2_dev.dev, "%s: second buffer status 0x%x\n", |
343 | __func__, sh_vou_reg_a_read(vou_dev, VOUSTR)); | |
a81fb9b2 GL |
344 | |
345 | /* Enable End-of-Frame (VSYNC) interrupts */ | |
346 | sh_vou_reg_a_write(vou_dev, VOUIR, 0x10004); | |
347 | /* Two buffers on the queue - activate the hardware */ | |
348 | ||
349 | vou_dev->status = SH_VOU_RUNNING; | |
350 | sh_vou_reg_a_write(vou_dev, VOUER, 0x107); | |
351 | } | |
352 | } | |
353 | ||
354 | static void sh_vou_buf_release(struct videobuf_queue *vq, | |
355 | struct videobuf_buffer *vb) | |
356 | { | |
357 | struct video_device *vdev = vq->priv_data; | |
358 | struct sh_vou_device *vou_dev = video_get_drvdata(vdev); | |
359 | unsigned long flags; | |
360 | ||
d899eddd | 361 | dev_dbg(vou_dev->v4l2_dev.dev, "%s()\n", __func__); |
a81fb9b2 GL |
362 | |
363 | spin_lock_irqsave(&vou_dev->lock, flags); | |
364 | ||
365 | if (vou_dev->active == vb) { | |
366 | /* disable output */ | |
367 | sh_vou_reg_a_set(vou_dev, VOUER, 0, 1); | |
368 | /* ...but the current frame will complete */ | |
369 | sh_vou_reg_a_set(vou_dev, VOUIR, 0, 0x30000); | |
370 | vou_dev->active = NULL; | |
371 | } | |
372 | ||
373 | if ((vb->state == VIDEOBUF_ACTIVE || vb->state == VIDEOBUF_QUEUED)) { | |
374 | vb->state = VIDEOBUF_ERROR; | |
375 | list_del(&vb->queue); | |
376 | } | |
377 | ||
378 | spin_unlock_irqrestore(&vou_dev->lock, flags); | |
379 | ||
380 | free_buffer(vq, vb); | |
381 | } | |
382 | ||
383 | static struct videobuf_queue_ops sh_vou_video_qops = { | |
384 | .buf_setup = sh_vou_buf_setup, | |
385 | .buf_prepare = sh_vou_buf_prepare, | |
386 | .buf_queue = sh_vou_buf_queue, | |
387 | .buf_release = sh_vou_buf_release, | |
388 | }; | |
389 | ||
390 | /* Video IOCTLs */ | |
391 | static int sh_vou_querycap(struct file *file, void *priv, | |
392 | struct v4l2_capability *cap) | |
393 | { | |
d899eddd | 394 | struct sh_vou_device *vou_dev = video_drvdata(file); |
a81fb9b2 | 395 | |
d899eddd | 396 | dev_dbg(vou_dev->v4l2_dev.dev, "%s()\n", __func__); |
a81fb9b2 GL |
397 | |
398 | strlcpy(cap->card, "SuperH VOU", sizeof(cap->card)); | |
d8046ee0 HV |
399 | strlcpy(cap->driver, "sh-vou", sizeof(cap->driver)); |
400 | strlcpy(cap->bus_info, "platform:sh-vou", sizeof(cap->bus_info)); | |
a020c747 HV |
401 | cap->device_caps = V4L2_CAP_VIDEO_OUTPUT | V4L2_CAP_STREAMING; |
402 | cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS; | |
a81fb9b2 GL |
403 | return 0; |
404 | } | |
405 | ||
406 | /* Enumerate formats, that the device can accept from the user */ | |
407 | static int sh_vou_enum_fmt_vid_out(struct file *file, void *priv, | |
408 | struct v4l2_fmtdesc *fmt) | |
409 | { | |
d899eddd | 410 | struct sh_vou_device *vou_dev = video_drvdata(file); |
a81fb9b2 GL |
411 | |
412 | if (fmt->index >= ARRAY_SIZE(vou_fmt)) | |
413 | return -EINVAL; | |
414 | ||
d899eddd | 415 | dev_dbg(vou_dev->v4l2_dev.dev, "%s()\n", __func__); |
a81fb9b2 GL |
416 | |
417 | fmt->type = V4L2_BUF_TYPE_VIDEO_OUTPUT; | |
418 | strlcpy(fmt->description, vou_fmt[fmt->index].desc, | |
419 | sizeof(fmt->description)); | |
420 | fmt->pixelformat = vou_fmt[fmt->index].pfmt; | |
421 | ||
422 | return 0; | |
423 | } | |
424 | ||
425 | static int sh_vou_g_fmt_vid_out(struct file *file, void *priv, | |
426 | struct v4l2_format *fmt) | |
427 | { | |
fd51625d | 428 | struct sh_vou_device *vou_dev = video_drvdata(file); |
a81fb9b2 GL |
429 | |
430 | dev_dbg(vou_dev->v4l2_dev.dev, "%s()\n", __func__); | |
431 | ||
432 | fmt->type = V4L2_BUF_TYPE_VIDEO_OUTPUT; | |
433 | fmt->fmt.pix = vou_dev->pix; | |
434 | ||
435 | return 0; | |
436 | } | |
437 | ||
438 | static const unsigned char vou_scale_h_num[] = {1, 9, 2, 9, 4}; | |
439 | static const unsigned char vou_scale_h_den[] = {1, 8, 1, 4, 1}; | |
440 | static const unsigned char vou_scale_h_fld[] = {0, 2, 1, 3}; | |
441 | static const unsigned char vou_scale_v_num[] = {1, 2, 4}; | |
442 | static const unsigned char vou_scale_v_den[] = {1, 1, 1}; | |
443 | static const unsigned char vou_scale_v_fld[] = {0, 1}; | |
444 | ||
445 | static void sh_vou_configure_geometry(struct sh_vou_device *vou_dev, | |
446 | int pix_idx, int w_idx, int h_idx) | |
447 | { | |
448 | struct sh_vou_fmt *fmt = vou_fmt + pix_idx; | |
a622cc51 | 449 | unsigned int black_left, black_top, width_max, |
a81fb9b2 GL |
450 | frame_in_height, frame_out_height, frame_out_top; |
451 | struct v4l2_rect *rect = &vou_dev->rect; | |
452 | struct v4l2_pix_format *pix = &vou_dev->pix; | |
453 | u32 vouvcr = 0, dsr_h, dsr_v; | |
454 | ||
455 | if (vou_dev->std & V4L2_STD_525_60) { | |
456 | width_max = 858; | |
a622cc51 | 457 | /* height_max = 262; */ |
a81fb9b2 GL |
458 | } else { |
459 | width_max = 864; | |
a622cc51 | 460 | /* height_max = 312; */ |
a81fb9b2 GL |
461 | } |
462 | ||
463 | frame_in_height = pix->height / 2; | |
464 | frame_out_height = rect->height / 2; | |
465 | frame_out_top = rect->top / 2; | |
466 | ||
467 | /* | |
468 | * Cropping scheme: max useful image is 720x480, and the total video | |
469 | * area is 858x525 (NTSC) or 864x625 (PAL). AK8813 / 8814 starts | |
470 | * sampling data beginning with fixed 276th (NTSC) / 288th (PAL) clock, | |
471 | * of which the first 33 / 25 clocks HSYNC must be held active. This | |
472 | * has to be configured in CR[HW]. 1 pixel equals 2 clock periods. | |
473 | * This gives CR[HW] = 16 / 12, VPR[HVP] = 138 / 144, which gives | |
474 | * exactly 858 - 138 = 864 - 144 = 720! We call the out-of-display area, | |
475 | * beyond DSR, specified on the left and top by the VPR register "black | |
476 | * pixels" and out-of-image area (DPR) "background pixels." We fix VPR | |
477 | * at 138 / 144 : 20, because that's the HSYNC timing, that our first | |
478 | * client requires, and that's exactly what leaves us 720 pixels for the | |
479 | * image; we leave VPR[VVP] at default 20 for now, because the client | |
480 | * doesn't seem to have any special requirements for it. Otherwise we | |
481 | * could also set it to max - 240 = 22 / 72. Thus VPR depends only on | |
482 | * the selected standard, and DPR and DSR are selected according to | |
483 | * cropping. Q: how does the client detect the first valid line? Does | |
484 | * HSYNC stay inactive during invalid (black) lines? | |
485 | */ | |
486 | black_left = width_max - VOU_MAX_IMAGE_WIDTH; | |
487 | black_top = 20; | |
488 | ||
489 | dsr_h = rect->width + rect->left; | |
490 | dsr_v = frame_out_height + frame_out_top; | |
491 | ||
492 | dev_dbg(vou_dev->v4l2_dev.dev, | |
493 | "image %ux%u, black %u:%u, offset %u:%u, display %ux%u\n", | |
494 | pix->width, frame_in_height, black_left, black_top, | |
495 | rect->left, frame_out_top, dsr_h, dsr_v); | |
496 | ||
497 | /* VOUISR height - half of a frame height in frame mode */ | |
498 | sh_vou_reg_ab_write(vou_dev, VOUISR, (pix->width << 16) | frame_in_height); | |
499 | sh_vou_reg_ab_write(vou_dev, VOUVPR, (black_left << 16) | black_top); | |
500 | sh_vou_reg_ab_write(vou_dev, VOUDPR, (rect->left << 16) | frame_out_top); | |
501 | sh_vou_reg_ab_write(vou_dev, VOUDSR, (dsr_h << 16) | dsr_v); | |
502 | ||
503 | /* | |
504 | * if necessary, we could set VOUHIR to | |
505 | * max(black_left + dsr_h, width_max) here | |
506 | */ | |
507 | ||
508 | if (w_idx) | |
509 | vouvcr |= (1 << 15) | (vou_scale_h_fld[w_idx - 1] << 4); | |
510 | if (h_idx) | |
511 | vouvcr |= (1 << 14) | vou_scale_v_fld[h_idx - 1]; | |
512 | ||
513 | dev_dbg(vou_dev->v4l2_dev.dev, "%s: scaling 0x%x\n", fmt->desc, vouvcr); | |
514 | ||
515 | /* To produce a colour bar for testing set bit 23 of VOUVCR */ | |
516 | sh_vou_reg_ab_write(vou_dev, VOUVCR, vouvcr); | |
517 | sh_vou_reg_ab_write(vou_dev, VOUDFR, | |
518 | fmt->pkf | (fmt->yf << 8) | (fmt->rgb << 16)); | |
519 | } | |
520 | ||
521 | struct sh_vou_geometry { | |
522 | struct v4l2_rect output; | |
523 | unsigned int in_width; | |
524 | unsigned int in_height; | |
525 | int scale_idx_h; | |
526 | int scale_idx_v; | |
527 | }; | |
528 | ||
529 | /* | |
530 | * Find input geometry, that we can use to produce output, closest to the | |
531 | * requested rectangle, using VOU scaling | |
532 | */ | |
533 | static void vou_adjust_input(struct sh_vou_geometry *geo, v4l2_std_id std) | |
534 | { | |
535 | /* The compiler cannot know, that best and idx will indeed be set */ | |
765fe17c | 536 | unsigned int best_err = UINT_MAX, best = 0, img_height_max; |
a81fb9b2 GL |
537 | int i, idx = 0; |
538 | ||
765fe17c GL |
539 | if (std & V4L2_STD_525_60) |
540 | img_height_max = 480; | |
541 | else | |
542 | img_height_max = 576; | |
a81fb9b2 GL |
543 | |
544 | /* Image width must be a multiple of 4 */ | |
545 | v4l_bound_align_image(&geo->in_width, 0, VOU_MAX_IMAGE_WIDTH, 2, | |
765fe17c | 546 | &geo->in_height, 0, img_height_max, 1, 0); |
a81fb9b2 GL |
547 | |
548 | /* Select scales to come as close as possible to the output image */ | |
549 | for (i = ARRAY_SIZE(vou_scale_h_num) - 1; i >= 0; i--) { | |
550 | unsigned int err; | |
551 | unsigned int found = geo->output.width * vou_scale_h_den[i] / | |
552 | vou_scale_h_num[i]; | |
553 | ||
554 | if (found > VOU_MAX_IMAGE_WIDTH) | |
555 | /* scales increase */ | |
556 | break; | |
557 | ||
558 | err = abs(found - geo->in_width); | |
559 | if (err < best_err) { | |
560 | best_err = err; | |
561 | idx = i; | |
562 | best = found; | |
563 | } | |
564 | if (!err) | |
565 | break; | |
566 | } | |
567 | ||
568 | geo->in_width = best; | |
569 | geo->scale_idx_h = idx; | |
570 | ||
571 | best_err = UINT_MAX; | |
572 | ||
573 | /* This loop can be replaced with one division */ | |
574 | for (i = ARRAY_SIZE(vou_scale_v_num) - 1; i >= 0; i--) { | |
575 | unsigned int err; | |
576 | unsigned int found = geo->output.height * vou_scale_v_den[i] / | |
577 | vou_scale_v_num[i]; | |
578 | ||
765fe17c | 579 | if (found > img_height_max) |
a81fb9b2 GL |
580 | /* scales increase */ |
581 | break; | |
582 | ||
583 | err = abs(found - geo->in_height); | |
584 | if (err < best_err) { | |
585 | best_err = err; | |
586 | idx = i; | |
587 | best = found; | |
588 | } | |
589 | if (!err) | |
590 | break; | |
591 | } | |
592 | ||
593 | geo->in_height = best; | |
594 | geo->scale_idx_v = idx; | |
595 | } | |
596 | ||
597 | /* | |
598 | * Find output geometry, that we can produce, using VOU scaling, closest to | |
599 | * the requested rectangle | |
600 | */ | |
601 | static void vou_adjust_output(struct sh_vou_geometry *geo, v4l2_std_id std) | |
602 | { | |
bc1ebd70 GL |
603 | unsigned int best_err = UINT_MAX, best = geo->in_width, |
604 | width_max, height_max, img_height_max; | |
5ac417ef | 605 | int i, idx_h = 0, idx_v = 0; |
a81fb9b2 GL |
606 | |
607 | if (std & V4L2_STD_525_60) { | |
608 | width_max = 858; | |
609 | height_max = 262 * 2; | |
765fe17c | 610 | img_height_max = 480; |
a81fb9b2 GL |
611 | } else { |
612 | width_max = 864; | |
613 | height_max = 312 * 2; | |
765fe17c | 614 | img_height_max = 576; |
a81fb9b2 GL |
615 | } |
616 | ||
617 | /* Select scales to come as close as possible to the output image */ | |
618 | for (i = 0; i < ARRAY_SIZE(vou_scale_h_num); i++) { | |
619 | unsigned int err; | |
620 | unsigned int found = geo->in_width * vou_scale_h_num[i] / | |
621 | vou_scale_h_den[i]; | |
622 | ||
623 | if (found > VOU_MAX_IMAGE_WIDTH) | |
624 | /* scales increase */ | |
625 | break; | |
626 | ||
627 | err = abs(found - geo->output.width); | |
628 | if (err < best_err) { | |
629 | best_err = err; | |
5ac417ef | 630 | idx_h = i; |
a81fb9b2 GL |
631 | best = found; |
632 | } | |
633 | if (!err) | |
634 | break; | |
635 | } | |
636 | ||
637 | geo->output.width = best; | |
5ac417ef | 638 | geo->scale_idx_h = idx_h; |
a81fb9b2 GL |
639 | if (geo->output.left + best > width_max) |
640 | geo->output.left = width_max - best; | |
641 | ||
642 | pr_debug("%s(): W %u * %u/%u = %u\n", __func__, geo->in_width, | |
5ac417ef | 643 | vou_scale_h_num[idx_h], vou_scale_h_den[idx_h], best); |
a81fb9b2 GL |
644 | |
645 | best_err = UINT_MAX; | |
646 | ||
647 | /* This loop can be replaced with one division */ | |
648 | for (i = 0; i < ARRAY_SIZE(vou_scale_v_num); i++) { | |
649 | unsigned int err; | |
650 | unsigned int found = geo->in_height * vou_scale_v_num[i] / | |
651 | vou_scale_v_den[i]; | |
652 | ||
765fe17c | 653 | if (found > img_height_max) |
a81fb9b2 GL |
654 | /* scales increase */ |
655 | break; | |
656 | ||
657 | err = abs(found - geo->output.height); | |
658 | if (err < best_err) { | |
659 | best_err = err; | |
5ac417ef | 660 | idx_v = i; |
a81fb9b2 GL |
661 | best = found; |
662 | } | |
663 | if (!err) | |
664 | break; | |
665 | } | |
666 | ||
667 | geo->output.height = best; | |
5ac417ef | 668 | geo->scale_idx_v = idx_v; |
a81fb9b2 GL |
669 | if (geo->output.top + best > height_max) |
670 | geo->output.top = height_max - best; | |
671 | ||
672 | pr_debug("%s(): H %u * %u/%u = %u\n", __func__, geo->in_height, | |
5ac417ef | 673 | vou_scale_v_num[idx_v], vou_scale_v_den[idx_v], best); |
a81fb9b2 GL |
674 | } |
675 | ||
676 | static int sh_vou_s_fmt_vid_out(struct file *file, void *priv, | |
677 | struct v4l2_format *fmt) | |
678 | { | |
fd51625d | 679 | struct sh_vou_device *vou_dev = video_drvdata(file); |
a81fb9b2 | 680 | struct v4l2_pix_format *pix = &fmt->fmt.pix; |
765fe17c | 681 | unsigned int img_height_max; |
a81fb9b2 GL |
682 | int pix_idx; |
683 | struct sh_vou_geometry geo; | |
ebf984bb HV |
684 | struct v4l2_subdev_format format = { |
685 | .which = V4L2_SUBDEV_FORMAT_ACTIVE, | |
a81fb9b2 | 686 | /* Revisit: is this the correct code? */ |
ebf984bb HV |
687 | .format.code = MEDIA_BUS_FMT_YUYV8_2X8, |
688 | .format.field = V4L2_FIELD_INTERLACED, | |
689 | .format.colorspace = V4L2_COLORSPACE_SMPTE170M, | |
a81fb9b2 | 690 | }; |
ebf984bb | 691 | struct v4l2_mbus_framefmt *mbfmt = &format.format; |
a81fb9b2 GL |
692 | int ret; |
693 | ||
694 | dev_dbg(vou_dev->v4l2_dev.dev, "%s(): %ux%u -> %ux%u\n", __func__, | |
695 | vou_dev->rect.width, vou_dev->rect.height, | |
696 | pix->width, pix->height); | |
697 | ||
698 | if (pix->field == V4L2_FIELD_ANY) | |
699 | pix->field = V4L2_FIELD_NONE; | |
700 | ||
701 | if (fmt->type != V4L2_BUF_TYPE_VIDEO_OUTPUT || | |
702 | pix->field != V4L2_FIELD_NONE) | |
703 | return -EINVAL; | |
704 | ||
705 | for (pix_idx = 0; pix_idx < ARRAY_SIZE(vou_fmt); pix_idx++) | |
706 | if (vou_fmt[pix_idx].pfmt == pix->pixelformat) | |
707 | break; | |
708 | ||
709 | if (pix_idx == ARRAY_SIZE(vou_fmt)) | |
710 | return -EINVAL; | |
711 | ||
765fe17c GL |
712 | if (vou_dev->std & V4L2_STD_525_60) |
713 | img_height_max = 480; | |
714 | else | |
715 | img_height_max = 576; | |
716 | ||
a81fb9b2 GL |
717 | /* Image width must be a multiple of 4 */ |
718 | v4l_bound_align_image(&pix->width, 0, VOU_MAX_IMAGE_WIDTH, 2, | |
765fe17c | 719 | &pix->height, 0, img_height_max, 1, 0); |
a81fb9b2 GL |
720 | |
721 | geo.in_width = pix->width; | |
722 | geo.in_height = pix->height; | |
723 | geo.output = vou_dev->rect; | |
724 | ||
725 | vou_adjust_output(&geo, vou_dev->std); | |
726 | ||
ebf984bb HV |
727 | mbfmt->width = geo.output.width; |
728 | mbfmt->height = geo.output.height; | |
729 | ret = v4l2_device_call_until_err(&vou_dev->v4l2_dev, 0, pad, | |
730 | set_fmt, NULL, &format); | |
a81fb9b2 GL |
731 | /* Must be implemented, so, don't check for -ENOIOCTLCMD */ |
732 | if (ret < 0) | |
733 | return ret; | |
734 | ||
735 | dev_dbg(vou_dev->v4l2_dev.dev, "%s(): %ux%u -> %ux%u\n", __func__, | |
ebf984bb | 736 | geo.output.width, geo.output.height, mbfmt->width, mbfmt->height); |
a81fb9b2 GL |
737 | |
738 | /* Sanity checks */ | |
ebf984bb HV |
739 | if ((unsigned)mbfmt->width > VOU_MAX_IMAGE_WIDTH || |
740 | (unsigned)mbfmt->height > img_height_max || | |
741 | mbfmt->code != MEDIA_BUS_FMT_YUYV8_2X8) | |
a81fb9b2 GL |
742 | return -EIO; |
743 | ||
ebf984bb HV |
744 | if (mbfmt->width != geo.output.width || |
745 | mbfmt->height != geo.output.height) { | |
746 | geo.output.width = mbfmt->width; | |
747 | geo.output.height = mbfmt->height; | |
a81fb9b2 GL |
748 | |
749 | vou_adjust_input(&geo, vou_dev->std); | |
750 | } | |
751 | ||
752 | /* We tried to preserve output rectangle, but it could have changed */ | |
753 | vou_dev->rect = geo.output; | |
754 | pix->width = geo.in_width; | |
755 | pix->height = geo.in_height; | |
756 | ||
757 | dev_dbg(vou_dev->v4l2_dev.dev, "%s(): %ux%u\n", __func__, | |
758 | pix->width, pix->height); | |
759 | ||
760 | vou_dev->pix_idx = pix_idx; | |
761 | ||
762 | vou_dev->pix = *pix; | |
763 | ||
764 | sh_vou_configure_geometry(vou_dev, pix_idx, | |
765 | geo.scale_idx_h, geo.scale_idx_v); | |
766 | ||
767 | return 0; | |
768 | } | |
769 | ||
770 | static int sh_vou_try_fmt_vid_out(struct file *file, void *priv, | |
771 | struct v4l2_format *fmt) | |
772 | { | |
d899eddd | 773 | struct sh_vou_device *vou_dev = video_drvdata(file); |
a81fb9b2 GL |
774 | struct v4l2_pix_format *pix = &fmt->fmt.pix; |
775 | int i; | |
776 | ||
d899eddd | 777 | dev_dbg(vou_dev->v4l2_dev.dev, "%s()\n", __func__); |
a81fb9b2 GL |
778 | |
779 | fmt->type = V4L2_BUF_TYPE_VIDEO_OUTPUT; | |
780 | pix->field = V4L2_FIELD_NONE; | |
781 | ||
782 | v4l_bound_align_image(&pix->width, 0, VOU_MAX_IMAGE_WIDTH, 1, | |
783 | &pix->height, 0, VOU_MAX_IMAGE_HEIGHT, 1, 0); | |
784 | ||
47c32ec9 | 785 | for (i = 0; i < ARRAY_SIZE(vou_fmt); i++) |
a81fb9b2 GL |
786 | if (vou_fmt[i].pfmt == pix->pixelformat) |
787 | return 0; | |
788 | ||
789 | pix->pixelformat = vou_fmt[0].pfmt; | |
790 | ||
791 | return 0; | |
792 | } | |
793 | ||
794 | static int sh_vou_reqbufs(struct file *file, void *priv, | |
795 | struct v4l2_requestbuffers *req) | |
796 | { | |
d899eddd | 797 | struct sh_vou_device *vou_dev = video_drvdata(file); |
a81fb9b2 GL |
798 | struct sh_vou_file *vou_file = priv; |
799 | ||
d899eddd | 800 | dev_dbg(vou_dev->v4l2_dev.dev, "%s()\n", __func__); |
a81fb9b2 GL |
801 | |
802 | if (req->type != V4L2_BUF_TYPE_VIDEO_OUTPUT) | |
803 | return -EINVAL; | |
804 | ||
805 | return videobuf_reqbufs(&vou_file->vbq, req); | |
806 | } | |
807 | ||
808 | static int sh_vou_querybuf(struct file *file, void *priv, | |
809 | struct v4l2_buffer *b) | |
810 | { | |
d899eddd | 811 | struct sh_vou_device *vou_dev = video_drvdata(file); |
a81fb9b2 GL |
812 | struct sh_vou_file *vou_file = priv; |
813 | ||
d899eddd | 814 | dev_dbg(vou_dev->v4l2_dev.dev, "%s()\n", __func__); |
a81fb9b2 GL |
815 | |
816 | return videobuf_querybuf(&vou_file->vbq, b); | |
817 | } | |
818 | ||
819 | static int sh_vou_qbuf(struct file *file, void *priv, struct v4l2_buffer *b) | |
820 | { | |
d899eddd | 821 | struct sh_vou_device *vou_dev = video_drvdata(file); |
a81fb9b2 GL |
822 | struct sh_vou_file *vou_file = priv; |
823 | ||
d899eddd | 824 | dev_dbg(vou_dev->v4l2_dev.dev, "%s()\n", __func__); |
a81fb9b2 GL |
825 | |
826 | return videobuf_qbuf(&vou_file->vbq, b); | |
827 | } | |
828 | ||
829 | static int sh_vou_dqbuf(struct file *file, void *priv, struct v4l2_buffer *b) | |
830 | { | |
d899eddd | 831 | struct sh_vou_device *vou_dev = video_drvdata(file); |
a81fb9b2 GL |
832 | struct sh_vou_file *vou_file = priv; |
833 | ||
d899eddd | 834 | dev_dbg(vou_dev->v4l2_dev.dev, "%s()\n", __func__); |
a81fb9b2 GL |
835 | |
836 | return videobuf_dqbuf(&vou_file->vbq, b, file->f_flags & O_NONBLOCK); | |
837 | } | |
838 | ||
839 | static int sh_vou_streamon(struct file *file, void *priv, | |
840 | enum v4l2_buf_type buftype) | |
841 | { | |
fd51625d | 842 | struct sh_vou_device *vou_dev = video_drvdata(file); |
a81fb9b2 GL |
843 | struct sh_vou_file *vou_file = priv; |
844 | int ret; | |
845 | ||
d899eddd | 846 | dev_dbg(vou_dev->v4l2_dev.dev, "%s()\n", __func__); |
a81fb9b2 GL |
847 | |
848 | ret = v4l2_device_call_until_err(&vou_dev->v4l2_dev, 0, | |
849 | video, s_stream, 1); | |
850 | if (ret < 0 && ret != -ENOIOCTLCMD) | |
851 | return ret; | |
852 | ||
853 | /* This calls our .buf_queue() (== sh_vou_buf_queue) */ | |
854 | return videobuf_streamon(&vou_file->vbq); | |
855 | } | |
856 | ||
857 | static int sh_vou_streamoff(struct file *file, void *priv, | |
858 | enum v4l2_buf_type buftype) | |
859 | { | |
fd51625d | 860 | struct sh_vou_device *vou_dev = video_drvdata(file); |
a81fb9b2 GL |
861 | struct sh_vou_file *vou_file = priv; |
862 | ||
d899eddd | 863 | dev_dbg(vou_dev->v4l2_dev.dev, "%s()\n", __func__); |
a81fb9b2 GL |
864 | |
865 | /* | |
866 | * This calls buf_release from host driver's videobuf_queue_ops for all | |
867 | * remaining buffers. When the last buffer is freed, stop streaming | |
868 | */ | |
869 | videobuf_streamoff(&vou_file->vbq); | |
870 | v4l2_device_call_until_err(&vou_dev->v4l2_dev, 0, video, s_stream, 0); | |
871 | ||
872 | return 0; | |
873 | } | |
874 | ||
4de00d0e HV |
875 | static int sh_vou_enum_output(struct file *file, void *fh, |
876 | struct v4l2_output *a) | |
877 | { | |
878 | struct sh_vou_device *vou_dev = video_drvdata(file); | |
879 | ||
880 | if (a->index) | |
881 | return -EINVAL; | |
882 | strlcpy(a->name, "Video Out", sizeof(a->name)); | |
883 | a->type = V4L2_OUTPUT_TYPE_ANALOG; | |
884 | a->std = vou_dev->vdev.tvnorms; | |
885 | return 0; | |
886 | } | |
887 | ||
888 | int sh_vou_g_output(struct file *file, void *fh, unsigned int *i) | |
889 | { | |
890 | *i = 0; | |
891 | return 0; | |
892 | } | |
893 | ||
894 | int sh_vou_s_output(struct file *file, void *fh, unsigned int i) | |
895 | { | |
896 | return i ? -EINVAL : 0; | |
897 | } | |
898 | ||
a81fb9b2 GL |
899 | static u32 sh_vou_ntsc_mode(enum sh_vou_bus_fmt bus_fmt) |
900 | { | |
901 | switch (bus_fmt) { | |
902 | default: | |
903 | pr_warning("%s(): Invalid bus-format code %d, using default 8-bit\n", | |
904 | __func__, bus_fmt); | |
905 | case SH_VOU_BUS_8BIT: | |
906 | return 1; | |
907 | case SH_VOU_BUS_16BIT: | |
908 | return 0; | |
909 | case SH_VOU_BUS_BT656: | |
910 | return 3; | |
911 | } | |
912 | } | |
913 | ||
314527ac | 914 | static int sh_vou_s_std(struct file *file, void *priv, v4l2_std_id std_id) |
a81fb9b2 | 915 | { |
fd51625d | 916 | struct sh_vou_device *vou_dev = video_drvdata(file); |
a81fb9b2 GL |
917 | int ret; |
918 | ||
314527ac | 919 | dev_dbg(vou_dev->v4l2_dev.dev, "%s(): 0x%llx\n", __func__, std_id); |
a81fb9b2 | 920 | |
d079f99f | 921 | if (std_id & ~vou_dev->vdev.tvnorms) |
a81fb9b2 GL |
922 | return -EINVAL; |
923 | ||
924 | ret = v4l2_device_call_until_err(&vou_dev->v4l2_dev, 0, video, | |
314527ac | 925 | s_std_output, std_id); |
a81fb9b2 GL |
926 | /* Shall we continue, if the subdev doesn't support .s_std_output()? */ |
927 | if (ret < 0 && ret != -ENOIOCTLCMD) | |
928 | return ret; | |
929 | ||
314527ac | 930 | if (std_id & V4L2_STD_525_60) |
a81fb9b2 GL |
931 | sh_vou_reg_ab_set(vou_dev, VOUCR, |
932 | sh_vou_ntsc_mode(vou_dev->pdata->bus_fmt) << 29, 7 << 29); | |
933 | else | |
934 | sh_vou_reg_ab_set(vou_dev, VOUCR, 5 << 29, 7 << 29); | |
935 | ||
314527ac | 936 | vou_dev->std = std_id; |
a81fb9b2 GL |
937 | |
938 | return 0; | |
939 | } | |
940 | ||
941 | static int sh_vou_g_std(struct file *file, void *priv, v4l2_std_id *std) | |
942 | { | |
fd51625d | 943 | struct sh_vou_device *vou_dev = video_drvdata(file); |
a81fb9b2 GL |
944 | |
945 | dev_dbg(vou_dev->v4l2_dev.dev, "%s()\n", __func__); | |
946 | ||
947 | *std = vou_dev->std; | |
948 | ||
949 | return 0; | |
950 | } | |
951 | ||
952 | static int sh_vou_g_crop(struct file *file, void *fh, struct v4l2_crop *a) | |
953 | { | |
fd51625d | 954 | struct sh_vou_device *vou_dev = video_drvdata(file); |
a81fb9b2 GL |
955 | |
956 | dev_dbg(vou_dev->v4l2_dev.dev, "%s()\n", __func__); | |
957 | ||
958 | a->type = V4L2_BUF_TYPE_VIDEO_OUTPUT; | |
959 | a->c = vou_dev->rect; | |
960 | ||
961 | return 0; | |
962 | } | |
963 | ||
964 | /* Assume a dull encoder, do all the work ourselves. */ | |
4f996594 | 965 | static int sh_vou_s_crop(struct file *file, void *fh, const struct v4l2_crop *a) |
a81fb9b2 | 966 | { |
17803580 | 967 | struct v4l2_crop a_writable = *a; |
fd51625d | 968 | struct sh_vou_device *vou_dev = video_drvdata(file); |
17803580 | 969 | struct v4l2_rect *rect = &a_writable.c; |
a81fb9b2 GL |
970 | struct v4l2_crop sd_crop = {.type = V4L2_BUF_TYPE_VIDEO_OUTPUT}; |
971 | struct v4l2_pix_format *pix = &vou_dev->pix; | |
972 | struct sh_vou_geometry geo; | |
ebf984bb HV |
973 | struct v4l2_subdev_format format = { |
974 | .which = V4L2_SUBDEV_FORMAT_ACTIVE, | |
a81fb9b2 | 975 | /* Revisit: is this the correct code? */ |
ebf984bb HV |
976 | .format.code = MEDIA_BUS_FMT_YUYV8_2X8, |
977 | .format.field = V4L2_FIELD_INTERLACED, | |
978 | .format.colorspace = V4L2_COLORSPACE_SMPTE170M, | |
a81fb9b2 | 979 | }; |
765fe17c | 980 | unsigned int img_height_max; |
a81fb9b2 GL |
981 | int ret; |
982 | ||
983 | dev_dbg(vou_dev->v4l2_dev.dev, "%s(): %ux%u@%u:%u\n", __func__, | |
984 | rect->width, rect->height, rect->left, rect->top); | |
985 | ||
986 | if (a->type != V4L2_BUF_TYPE_VIDEO_OUTPUT) | |
987 | return -EINVAL; | |
988 | ||
765fe17c GL |
989 | if (vou_dev->std & V4L2_STD_525_60) |
990 | img_height_max = 480; | |
991 | else | |
992 | img_height_max = 576; | |
993 | ||
a81fb9b2 | 994 | v4l_bound_align_image(&rect->width, 0, VOU_MAX_IMAGE_WIDTH, 1, |
765fe17c | 995 | &rect->height, 0, img_height_max, 1, 0); |
a81fb9b2 GL |
996 | |
997 | if (rect->width + rect->left > VOU_MAX_IMAGE_WIDTH) | |
998 | rect->left = VOU_MAX_IMAGE_WIDTH - rect->width; | |
999 | ||
765fe17c GL |
1000 | if (rect->height + rect->top > img_height_max) |
1001 | rect->top = img_height_max - rect->height; | |
a81fb9b2 GL |
1002 | |
1003 | geo.output = *rect; | |
1004 | geo.in_width = pix->width; | |
1005 | geo.in_height = pix->height; | |
1006 | ||
1007 | /* Configure the encoder one-to-one, position at 0, ignore errors */ | |
1008 | sd_crop.c.width = geo.output.width; | |
1009 | sd_crop.c.height = geo.output.height; | |
1010 | /* | |
1011 | * We first issue a S_CROP, so that the subsequent S_FMT delivers the | |
1012 | * final encoder configuration. | |
1013 | */ | |
1014 | v4l2_device_call_until_err(&vou_dev->v4l2_dev, 0, video, | |
1015 | s_crop, &sd_crop); | |
ebf984bb HV |
1016 | format.format.width = geo.output.width; |
1017 | format.format.height = geo.output.height; | |
1018 | ret = v4l2_device_call_until_err(&vou_dev->v4l2_dev, 0, pad, | |
1019 | set_fmt, NULL, &format); | |
a81fb9b2 GL |
1020 | /* Must be implemented, so, don't check for -ENOIOCTLCMD */ |
1021 | if (ret < 0) | |
1022 | return ret; | |
1023 | ||
1024 | /* Sanity checks */ | |
ebf984bb HV |
1025 | if ((unsigned)format.format.width > VOU_MAX_IMAGE_WIDTH || |
1026 | (unsigned)format.format.height > img_height_max || | |
1027 | format.format.code != MEDIA_BUS_FMT_YUYV8_2X8) | |
a81fb9b2 GL |
1028 | return -EIO; |
1029 | ||
ebf984bb HV |
1030 | geo.output.width = format.format.width; |
1031 | geo.output.height = format.format.height; | |
a81fb9b2 GL |
1032 | |
1033 | /* | |
1034 | * No down-scaling. According to the API, current call has precedence: | |
1035 | * http://v4l2spec.bytesex.org/spec/x1904.htm#AEN1954 paragraph two. | |
1036 | */ | |
1037 | vou_adjust_input(&geo, vou_dev->std); | |
1038 | ||
1039 | /* We tried to preserve output rectangle, but it could have changed */ | |
1040 | vou_dev->rect = geo.output; | |
1041 | pix->width = geo.in_width; | |
1042 | pix->height = geo.in_height; | |
1043 | ||
1044 | sh_vou_configure_geometry(vou_dev, vou_dev->pix_idx, | |
1045 | geo.scale_idx_h, geo.scale_idx_v); | |
1046 | ||
1047 | return 0; | |
1048 | } | |
1049 | ||
1050 | /* | |
1051 | * Total field: NTSC 858 x 2 * 262/263, PAL 864 x 2 * 312/313, default rectangle | |
1052 | * is the initial register values, height takes the interlaced format into | |
1053 | * account. The actual image can only go up to 720 x 2 * 240, So, VOUVPR can | |
1054 | * actually only meaningfully contain values <= 720 and <= 240 respectively, and | |
1055 | * not <= 864 and <= 312. | |
1056 | */ | |
1057 | static int sh_vou_cropcap(struct file *file, void *priv, | |
1058 | struct v4l2_cropcap *a) | |
1059 | { | |
d899eddd | 1060 | struct sh_vou_device *vou_dev = video_drvdata(file); |
a81fb9b2 | 1061 | |
d899eddd | 1062 | dev_dbg(vou_dev->v4l2_dev.dev, "%s()\n", __func__); |
a81fb9b2 GL |
1063 | |
1064 | a->type = V4L2_BUF_TYPE_VIDEO_OUTPUT; | |
1065 | a->bounds.left = 0; | |
1066 | a->bounds.top = 0; | |
1067 | a->bounds.width = VOU_MAX_IMAGE_WIDTH; | |
1068 | a->bounds.height = VOU_MAX_IMAGE_HEIGHT; | |
1069 | /* Default = max, set VOUDPR = 0, which is not hardware default */ | |
1070 | a->defrect.left = 0; | |
1071 | a->defrect.top = 0; | |
1072 | a->defrect.width = VOU_MAX_IMAGE_WIDTH; | |
1073 | a->defrect.height = VOU_MAX_IMAGE_HEIGHT; | |
1074 | a->pixelaspect.numerator = 1; | |
1075 | a->pixelaspect.denominator = 1; | |
1076 | ||
1077 | return 0; | |
1078 | } | |
1079 | ||
1080 | static irqreturn_t sh_vou_isr(int irq, void *dev_id) | |
1081 | { | |
1082 | struct sh_vou_device *vou_dev = dev_id; | |
1083 | static unsigned long j; | |
1084 | struct videobuf_buffer *vb; | |
1085 | static int cnt; | |
a81fb9b2 GL |
1086 | u32 irq_status = sh_vou_reg_a_read(vou_dev, VOUIR), masked; |
1087 | u32 vou_status = sh_vou_reg_a_read(vou_dev, VOUSTR); | |
1088 | ||
1089 | if (!(irq_status & 0x300)) { | |
1090 | if (printk_timed_ratelimit(&j, 500)) | |
1091 | dev_warn(vou_dev->v4l2_dev.dev, "IRQ status 0x%x!\n", | |
1092 | irq_status); | |
1093 | return IRQ_NONE; | |
1094 | } | |
1095 | ||
1096 | spin_lock(&vou_dev->lock); | |
1097 | if (!vou_dev->active || list_empty(&vou_dev->queue)) { | |
1098 | if (printk_timed_ratelimit(&j, 500)) | |
1099 | dev_warn(vou_dev->v4l2_dev.dev, | |
1100 | "IRQ without active buffer: %x!\n", irq_status); | |
1101 | /* Just ack: buf_release will disable further interrupts */ | |
1102 | sh_vou_reg_a_set(vou_dev, VOUIR, 0, 0x300); | |
1103 | spin_unlock(&vou_dev->lock); | |
1104 | return IRQ_HANDLED; | |
1105 | } | |
1106 | ||
1107 | masked = ~(0x300 & irq_status) & irq_status & 0x30304; | |
1108 | dev_dbg(vou_dev->v4l2_dev.dev, | |
1109 | "IRQ status 0x%x -> 0x%x, VOU status 0x%x, cnt %d\n", | |
1110 | irq_status, masked, vou_status, cnt); | |
1111 | ||
1112 | cnt++; | |
a622cc51 | 1113 | /* side = vou_status & 0x10000; */ |
a81fb9b2 GL |
1114 | |
1115 | /* Clear only set interrupts */ | |
1116 | sh_vou_reg_a_write(vou_dev, VOUIR, masked); | |
1117 | ||
1118 | vb = vou_dev->active; | |
1119 | list_del(&vb->queue); | |
1120 | ||
1121 | vb->state = VIDEOBUF_DONE; | |
8e6057b5 | 1122 | v4l2_get_timestamp(&vb->ts); |
a81fb9b2 GL |
1123 | vb->field_count++; |
1124 | wake_up(&vb->done); | |
1125 | ||
1126 | if (list_empty(&vou_dev->queue)) { | |
1127 | /* Stop VOU */ | |
1128 | dev_dbg(vou_dev->v4l2_dev.dev, "%s: queue empty after %d\n", | |
1129 | __func__, cnt); | |
1130 | sh_vou_reg_a_set(vou_dev, VOUER, 0, 1); | |
1131 | vou_dev->active = NULL; | |
1132 | vou_dev->status = SH_VOU_INITIALISING; | |
1133 | /* Disable End-of-Frame (VSYNC) interrupts */ | |
1134 | sh_vou_reg_a_set(vou_dev, VOUIR, 0, 0x30000); | |
1135 | spin_unlock(&vou_dev->lock); | |
1136 | return IRQ_HANDLED; | |
1137 | } | |
1138 | ||
1139 | vou_dev->active = list_entry(vou_dev->queue.next, | |
1140 | struct videobuf_buffer, queue); | |
1141 | ||
1142 | if (vou_dev->active->queue.next != &vou_dev->queue) { | |
1143 | struct videobuf_buffer *new = list_entry(vou_dev->active->queue.next, | |
1144 | struct videobuf_buffer, queue); | |
1145 | sh_vou_schedule_next(vou_dev, new); | |
1146 | } | |
1147 | ||
1148 | spin_unlock(&vou_dev->lock); | |
1149 | ||
1150 | return IRQ_HANDLED; | |
1151 | } | |
1152 | ||
1153 | static int sh_vou_hw_init(struct sh_vou_device *vou_dev) | |
1154 | { | |
1155 | struct sh_vou_pdata *pdata = vou_dev->pdata; | |
1156 | u32 voucr = sh_vou_ntsc_mode(pdata->bus_fmt) << 29; | |
1157 | int i = 100; | |
1158 | ||
1159 | /* Disable all IRQs */ | |
1160 | sh_vou_reg_a_write(vou_dev, VOUIR, 0); | |
1161 | ||
1162 | /* Reset VOU interfaces - registers unaffected */ | |
1163 | sh_vou_reg_a_write(vou_dev, VOUSRR, 0x101); | |
1164 | while (--i && (sh_vou_reg_a_read(vou_dev, VOUSRR) & 0x101)) | |
1165 | udelay(1); | |
1166 | ||
1167 | if (!i) | |
1168 | return -ETIMEDOUT; | |
1169 | ||
1170 | dev_dbg(vou_dev->v4l2_dev.dev, "Reset took %dus\n", 100 - i); | |
1171 | ||
1172 | if (pdata->flags & SH_VOU_PCLK_FALLING) | |
1173 | voucr |= 1 << 28; | |
1174 | if (pdata->flags & SH_VOU_HSYNC_LOW) | |
1175 | voucr |= 1 << 27; | |
1176 | if (pdata->flags & SH_VOU_VSYNC_LOW) | |
1177 | voucr |= 1 << 26; | |
1178 | sh_vou_reg_ab_set(vou_dev, VOUCR, voucr, 0xfc000000); | |
1179 | ||
1180 | /* Manual register side switching at first */ | |
1181 | sh_vou_reg_a_write(vou_dev, VOURCR, 4); | |
1182 | /* Default - fixed HSYNC length, can be made configurable is required */ | |
1183 | sh_vou_reg_ab_write(vou_dev, VOUMSR, 0x800000); | |
1184 | ||
1185 | return 0; | |
1186 | } | |
1187 | ||
1188 | /* File operations */ | |
1189 | static int sh_vou_open(struct file *file) | |
1190 | { | |
fd51625d | 1191 | struct sh_vou_device *vou_dev = video_drvdata(file); |
a81fb9b2 GL |
1192 | struct sh_vou_file *vou_file = kzalloc(sizeof(struct sh_vou_file), |
1193 | GFP_KERNEL); | |
1194 | ||
1195 | if (!vou_file) | |
1196 | return -ENOMEM; | |
1197 | ||
1198 | dev_dbg(vou_dev->v4l2_dev.dev, "%s()\n", __func__); | |
1199 | ||
c5f98085 | 1200 | v4l2_fh_init(&vou_file->fh, &vou_dev->vdev); |
2160abb2 AK |
1201 | if (mutex_lock_interruptible(&vou_dev->fop_lock)) { |
1202 | kfree(vou_file); | |
f135a8a2 | 1203 | return -ERESTARTSYS; |
2160abb2 | 1204 | } |
c5f98085 HV |
1205 | v4l2_fh_add(&vou_file->fh); |
1206 | if (v4l2_fh_is_singular(&vou_file->fh)) { | |
a81fb9b2 | 1207 | int ret; |
c5f98085 | 1208 | |
a81fb9b2 GL |
1209 | /* First open */ |
1210 | vou_dev->status = SH_VOU_INITIALISING; | |
fd51625d | 1211 | pm_runtime_get_sync(vou_dev->v4l2_dev.dev); |
a81fb9b2 GL |
1212 | ret = sh_vou_hw_init(vou_dev); |
1213 | if (ret < 0) { | |
fd51625d | 1214 | pm_runtime_put(vou_dev->v4l2_dev.dev); |
a81fb9b2 | 1215 | vou_dev->status = SH_VOU_IDLE; |
c5f98085 HV |
1216 | v4l2_fh_del(&vou_file->fh); |
1217 | v4l2_fh_exit(&vou_file->fh); | |
f135a8a2 | 1218 | mutex_unlock(&vou_dev->fop_lock); |
2160abb2 | 1219 | kfree(vou_file); |
a81fb9b2 GL |
1220 | return ret; |
1221 | } | |
1222 | } | |
1223 | ||
1224 | videobuf_queue_dma_contig_init(&vou_file->vbq, &sh_vou_video_qops, | |
1225 | vou_dev->v4l2_dev.dev, &vou_dev->lock, | |
1226 | V4L2_BUF_TYPE_VIDEO_OUTPUT, | |
1227 | V4L2_FIELD_NONE, | |
fd51625d | 1228 | sizeof(struct videobuf_buffer), |
d079f99f | 1229 | &vou_dev->vdev, &vou_dev->fop_lock); |
f135a8a2 | 1230 | mutex_unlock(&vou_dev->fop_lock); |
a81fb9b2 | 1231 | |
2160abb2 AK |
1232 | file->private_data = vou_file; |
1233 | ||
a81fb9b2 GL |
1234 | return 0; |
1235 | } | |
1236 | ||
1237 | static int sh_vou_release(struct file *file) | |
1238 | { | |
fd51625d | 1239 | struct sh_vou_device *vou_dev = video_drvdata(file); |
a81fb9b2 GL |
1240 | struct sh_vou_file *vou_file = file->private_data; |
1241 | ||
d899eddd | 1242 | dev_dbg(vou_dev->v4l2_dev.dev, "%s()\n", __func__); |
a81fb9b2 | 1243 | |
c5f98085 HV |
1244 | mutex_lock(&vou_dev->fop_lock); |
1245 | if (v4l2_fh_is_singular(&vou_file->fh)) { | |
a81fb9b2 GL |
1246 | /* Last close */ |
1247 | vou_dev->status = SH_VOU_IDLE; | |
1248 | sh_vou_reg_a_set(vou_dev, VOUER, 0, 0x101); | |
fd51625d | 1249 | pm_runtime_put(vou_dev->v4l2_dev.dev); |
a81fb9b2 | 1250 | } |
c5f98085 HV |
1251 | v4l2_fh_del(&vou_file->fh); |
1252 | v4l2_fh_exit(&vou_file->fh); | |
1253 | mutex_unlock(&vou_dev->fop_lock); | |
a81fb9b2 GL |
1254 | |
1255 | file->private_data = NULL; | |
1256 | kfree(vou_file); | |
1257 | ||
1258 | return 0; | |
1259 | } | |
1260 | ||
1261 | static int sh_vou_mmap(struct file *file, struct vm_area_struct *vma) | |
1262 | { | |
fd51625d | 1263 | struct sh_vou_device *vou_dev = video_drvdata(file); |
a81fb9b2 | 1264 | struct sh_vou_file *vou_file = file->private_data; |
f135a8a2 | 1265 | int ret; |
a81fb9b2 | 1266 | |
d899eddd | 1267 | dev_dbg(vou_dev->v4l2_dev.dev, "%s()\n", __func__); |
a81fb9b2 | 1268 | |
f135a8a2 HV |
1269 | if (mutex_lock_interruptible(&vou_dev->fop_lock)) |
1270 | return -ERESTARTSYS; | |
1271 | ret = videobuf_mmap_mapper(&vou_file->vbq, vma); | |
1272 | mutex_unlock(&vou_dev->fop_lock); | |
1273 | return ret; | |
a81fb9b2 GL |
1274 | } |
1275 | ||
1276 | static unsigned int sh_vou_poll(struct file *file, poll_table *wait) | |
1277 | { | |
fd51625d | 1278 | struct sh_vou_device *vou_dev = video_drvdata(file); |
a81fb9b2 | 1279 | struct sh_vou_file *vou_file = file->private_data; |
f135a8a2 | 1280 | unsigned int res; |
a81fb9b2 | 1281 | |
d899eddd | 1282 | dev_dbg(vou_dev->v4l2_dev.dev, "%s()\n", __func__); |
a81fb9b2 | 1283 | |
f135a8a2 HV |
1284 | mutex_lock(&vou_dev->fop_lock); |
1285 | res = videobuf_poll_stream(file, &vou_file->vbq, wait); | |
1286 | mutex_unlock(&vou_dev->fop_lock); | |
1287 | return res; | |
a81fb9b2 GL |
1288 | } |
1289 | ||
a81fb9b2 GL |
1290 | /* sh_vou display ioctl operations */ |
1291 | static const struct v4l2_ioctl_ops sh_vou_ioctl_ops = { | |
1292 | .vidioc_querycap = sh_vou_querycap, | |
1293 | .vidioc_enum_fmt_vid_out = sh_vou_enum_fmt_vid_out, | |
1294 | .vidioc_g_fmt_vid_out = sh_vou_g_fmt_vid_out, | |
1295 | .vidioc_s_fmt_vid_out = sh_vou_s_fmt_vid_out, | |
1296 | .vidioc_try_fmt_vid_out = sh_vou_try_fmt_vid_out, | |
1297 | .vidioc_reqbufs = sh_vou_reqbufs, | |
1298 | .vidioc_querybuf = sh_vou_querybuf, | |
1299 | .vidioc_qbuf = sh_vou_qbuf, | |
1300 | .vidioc_dqbuf = sh_vou_dqbuf, | |
1301 | .vidioc_streamon = sh_vou_streamon, | |
1302 | .vidioc_streamoff = sh_vou_streamoff, | |
4de00d0e HV |
1303 | .vidioc_g_output = sh_vou_g_output, |
1304 | .vidioc_s_output = sh_vou_s_output, | |
1305 | .vidioc_enum_output = sh_vou_enum_output, | |
a81fb9b2 GL |
1306 | .vidioc_s_std = sh_vou_s_std, |
1307 | .vidioc_g_std = sh_vou_g_std, | |
1308 | .vidioc_cropcap = sh_vou_cropcap, | |
1309 | .vidioc_g_crop = sh_vou_g_crop, | |
1310 | .vidioc_s_crop = sh_vou_s_crop, | |
a81fb9b2 GL |
1311 | }; |
1312 | ||
1313 | static const struct v4l2_file_operations sh_vou_fops = { | |
1314 | .owner = THIS_MODULE, | |
1315 | .open = sh_vou_open, | |
1316 | .release = sh_vou_release, | |
69756693 | 1317 | .unlocked_ioctl = video_ioctl2, |
a81fb9b2 GL |
1318 | .mmap = sh_vou_mmap, |
1319 | .poll = sh_vou_poll, | |
1320 | }; | |
1321 | ||
1322 | static const struct video_device sh_vou_video_template = { | |
1323 | .name = "sh_vou", | |
1324 | .fops = &sh_vou_fops, | |
1325 | .ioctl_ops = &sh_vou_ioctl_ops, | |
1326 | .tvnorms = V4L2_STD_525_60, /* PAL only supported in 8-bit non-bt656 mode */ | |
954f340f | 1327 | .vfl_dir = VFL_DIR_TX, |
a81fb9b2 GL |
1328 | }; |
1329 | ||
4c62e976 | 1330 | static int sh_vou_probe(struct platform_device *pdev) |
a81fb9b2 GL |
1331 | { |
1332 | struct sh_vou_pdata *vou_pdata = pdev->dev.platform_data; | |
1333 | struct v4l2_rect *rect; | |
1334 | struct v4l2_pix_format *pix; | |
1335 | struct i2c_adapter *i2c_adap; | |
1336 | struct video_device *vdev; | |
1337 | struct sh_vou_device *vou_dev; | |
4690271c | 1338 | struct resource *reg_res; |
a81fb9b2 GL |
1339 | struct v4l2_subdev *subdev; |
1340 | int irq, ret; | |
1341 | ||
1342 | reg_res = platform_get_resource(pdev, IORESOURCE_MEM, 0); | |
1343 | irq = platform_get_irq(pdev, 0); | |
1344 | ||
1345 | if (!vou_pdata || !reg_res || irq <= 0) { | |
1346 | dev_err(&pdev->dev, "Insufficient VOU platform information.\n"); | |
1347 | return -ENODEV; | |
1348 | } | |
1349 | ||
4690271c | 1350 | vou_dev = devm_kzalloc(&pdev->dev, sizeof(*vou_dev), GFP_KERNEL); |
a81fb9b2 GL |
1351 | if (!vou_dev) |
1352 | return -ENOMEM; | |
1353 | ||
1354 | INIT_LIST_HEAD(&vou_dev->queue); | |
1355 | spin_lock_init(&vou_dev->lock); | |
69756693 | 1356 | mutex_init(&vou_dev->fop_lock); |
a81fb9b2 GL |
1357 | vou_dev->pdata = vou_pdata; |
1358 | vou_dev->status = SH_VOU_IDLE; | |
1359 | ||
1360 | rect = &vou_dev->rect; | |
1361 | pix = &vou_dev->pix; | |
1362 | ||
1363 | /* Fill in defaults */ | |
5d408108 | 1364 | vou_dev->std = V4L2_STD_NTSC_M; |
a81fb9b2 GL |
1365 | rect->left = 0; |
1366 | rect->top = 0; | |
1367 | rect->width = VOU_MAX_IMAGE_WIDTH; | |
765fe17c | 1368 | rect->height = 480; |
a81fb9b2 | 1369 | pix->width = VOU_MAX_IMAGE_WIDTH; |
765fe17c | 1370 | pix->height = 480; |
22df2e7a | 1371 | pix->pixelformat = V4L2_PIX_FMT_NV16; |
a81fb9b2 GL |
1372 | pix->field = V4L2_FIELD_NONE; |
1373 | pix->bytesperline = VOU_MAX_IMAGE_WIDTH * 2; | |
765fe17c | 1374 | pix->sizeimage = VOU_MAX_IMAGE_WIDTH * 2 * 480; |
a81fb9b2 GL |
1375 | pix->colorspace = V4L2_COLORSPACE_SMPTE170M; |
1376 | ||
4690271c HV |
1377 | vou_dev->base = devm_ioremap_resource(&pdev->dev, reg_res); |
1378 | if (IS_ERR(vou_dev->base)) | |
1379 | return PTR_ERR(vou_dev->base); | |
a81fb9b2 | 1380 | |
4690271c | 1381 | ret = devm_request_irq(&pdev->dev, irq, sh_vou_isr, 0, "vou", vou_dev); |
a81fb9b2 | 1382 | if (ret < 0) |
4690271c | 1383 | return ret; |
a81fb9b2 GL |
1384 | |
1385 | ret = v4l2_device_register(&pdev->dev, &vou_dev->v4l2_dev); | |
1386 | if (ret < 0) { | |
1387 | dev_err(&pdev->dev, "Error registering v4l2 device\n"); | |
4690271c | 1388 | return ret; |
a81fb9b2 GL |
1389 | } |
1390 | ||
d079f99f | 1391 | vdev = &vou_dev->vdev; |
a81fb9b2 GL |
1392 | *vdev = sh_vou_video_template; |
1393 | if (vou_pdata->bus_fmt == SH_VOU_BUS_8BIT) | |
1394 | vdev->tvnorms |= V4L2_STD_PAL; | |
1395 | vdev->v4l2_dev = &vou_dev->v4l2_dev; | |
d079f99f | 1396 | vdev->release = video_device_release_empty; |
69756693 | 1397 | vdev->lock = &vou_dev->fop_lock; |
a81fb9b2 | 1398 | |
a81fb9b2 GL |
1399 | video_set_drvdata(vdev, vou_dev); |
1400 | ||
1401 | pm_runtime_enable(&pdev->dev); | |
1402 | pm_runtime_resume(&pdev->dev); | |
1403 | ||
1404 | i2c_adap = i2c_get_adapter(vou_pdata->i2c_adap); | |
1405 | if (!i2c_adap) { | |
1406 | ret = -ENODEV; | |
1407 | goto ei2cgadap; | |
1408 | } | |
1409 | ||
1410 | ret = sh_vou_hw_init(vou_dev); | |
1411 | if (ret < 0) | |
1412 | goto ereset; | |
1413 | ||
1414 | subdev = v4l2_i2c_new_subdev_board(&vou_dev->v4l2_dev, i2c_adap, | |
9a1f8b34 | 1415 | vou_pdata->board_info, NULL); |
a81fb9b2 GL |
1416 | if (!subdev) { |
1417 | ret = -ENOMEM; | |
1418 | goto ei2cnd; | |
1419 | } | |
1420 | ||
1421 | ret = video_register_device(vdev, VFL_TYPE_GRABBER, -1); | |
1422 | if (ret < 0) | |
1423 | goto evregdev; | |
1424 | ||
1425 | return 0; | |
1426 | ||
1427 | evregdev: | |
1428 | ei2cnd: | |
1429 | ereset: | |
1430 | i2c_put_adapter(i2c_adap); | |
1431 | ei2cgadap: | |
a81fb9b2 | 1432 | pm_runtime_disable(&pdev->dev); |
a81fb9b2 | 1433 | v4l2_device_unregister(&vou_dev->v4l2_dev); |
a81fb9b2 GL |
1434 | return ret; |
1435 | } | |
1436 | ||
4c62e976 | 1437 | static int sh_vou_remove(struct platform_device *pdev) |
a81fb9b2 | 1438 | { |
a81fb9b2 GL |
1439 | struct v4l2_device *v4l2_dev = platform_get_drvdata(pdev); |
1440 | struct sh_vou_device *vou_dev = container_of(v4l2_dev, | |
1441 | struct sh_vou_device, v4l2_dev); | |
1442 | struct v4l2_subdev *sd = list_entry(v4l2_dev->subdevs.next, | |
1443 | struct v4l2_subdev, list); | |
1444 | struct i2c_client *client = v4l2_get_subdevdata(sd); | |
a81fb9b2 | 1445 | |
a81fb9b2 | 1446 | pm_runtime_disable(&pdev->dev); |
d079f99f | 1447 | video_unregister_device(&vou_dev->vdev); |
a81fb9b2 GL |
1448 | i2c_put_adapter(client->adapter); |
1449 | v4l2_device_unregister(&vou_dev->v4l2_dev); | |
a81fb9b2 GL |
1450 | return 0; |
1451 | } | |
1452 | ||
1453 | static struct platform_driver __refdata sh_vou = { | |
4c62e976 | 1454 | .remove = sh_vou_remove, |
a81fb9b2 GL |
1455 | .driver = { |
1456 | .name = "sh-vou", | |
a81fb9b2 GL |
1457 | }, |
1458 | }; | |
1459 | ||
b3fd87bc | 1460 | module_platform_driver_probe(sh_vou, sh_vou_probe); |
a81fb9b2 GL |
1461 | |
1462 | MODULE_DESCRIPTION("SuperH VOU driver"); | |
1463 | MODULE_AUTHOR("Guennadi Liakhovetski <g.liakhovetski@gmx.de>"); | |
1464 | MODULE_LICENSE("GPL v2"); | |
64dc3c1a | 1465 | MODULE_VERSION("0.1.0"); |
a81fb9b2 | 1466 | MODULE_ALIAS("platform:sh-vou"); |