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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; | |
65 | struct video_device *vdev; | |
66 | atomic_t use_count; | |
67 | struct sh_vou_pdata *pdata; | |
68 | spinlock_t lock; | |
69 | void __iomem *base; | |
70 | /* State information */ | |
71 | struct v4l2_pix_format pix; | |
72 | struct v4l2_rect rect; | |
73 | struct list_head queue; | |
74 | v4l2_std_id std; | |
75 | int pix_idx; | |
76 | struct videobuf_buffer *active; | |
77 | enum sh_vou_status status; | |
69756693 | 78 | struct mutex fop_lock; |
a81fb9b2 GL |
79 | }; |
80 | ||
81 | struct sh_vou_file { | |
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 */ | |
289 | dev_warn(vq->dev, "User buffer too small: [%u] @ %lx\n", | |
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, |
a81fb9b2 GL |
305 | "%s(): fmt #%d, %u bytes per line, phys 0x%x, type %d, state %d\n", |
306 | __func__, vou_dev->pix_idx, bytes_per_line, | |
307 | videobuf_to_dma_contig(vb), vb->memory, vb->state); | |
308 | ||
309 | return 0; | |
310 | } | |
311 | ||
69756693 | 312 | /* Locking: caller holds fop_lock mutex and vq->irqlock spinlock */ |
a81fb9b2 GL |
313 | static void sh_vou_buf_queue(struct videobuf_queue *vq, |
314 | struct videobuf_buffer *vb) | |
315 | { | |
316 | struct video_device *vdev = vq->priv_data; | |
317 | struct sh_vou_device *vou_dev = video_get_drvdata(vdev); | |
318 | ||
d899eddd | 319 | dev_dbg(vou_dev->v4l2_dev.dev, "%s()\n", __func__); |
a81fb9b2 GL |
320 | |
321 | vb->state = VIDEOBUF_QUEUED; | |
322 | list_add_tail(&vb->queue, &vou_dev->queue); | |
323 | ||
324 | if (vou_dev->status == SH_VOU_RUNNING) { | |
325 | return; | |
326 | } else if (!vou_dev->active) { | |
327 | vou_dev->active = vb; | |
328 | /* Start from side A: we use mirror addresses, so, set B */ | |
329 | sh_vou_reg_a_write(vou_dev, VOURPR, 1); | |
d899eddd LP |
330 | dev_dbg(vou_dev->v4l2_dev.dev, "%s: first buffer status 0x%x\n", |
331 | __func__, sh_vou_reg_a_read(vou_dev, VOUSTR)); | |
a81fb9b2 GL |
332 | sh_vou_schedule_next(vou_dev, vb); |
333 | /* Only activate VOU after the second buffer */ | |
334 | } else if (vou_dev->active->queue.next == &vb->queue) { | |
335 | /* Second buffer - initialise register side B */ | |
336 | sh_vou_reg_a_write(vou_dev, VOURPR, 0); | |
337 | sh_vou_stream_start(vou_dev, vb); | |
338 | ||
339 | /* Register side switching with frame VSYNC */ | |
340 | sh_vou_reg_a_write(vou_dev, VOURCR, 5); | |
d899eddd LP |
341 | dev_dbg(vou_dev->v4l2_dev.dev, "%s: second buffer status 0x%x\n", |
342 | __func__, sh_vou_reg_a_read(vou_dev, VOUSTR)); | |
a81fb9b2 GL |
343 | |
344 | /* Enable End-of-Frame (VSYNC) interrupts */ | |
345 | sh_vou_reg_a_write(vou_dev, VOUIR, 0x10004); | |
346 | /* Two buffers on the queue - activate the hardware */ | |
347 | ||
348 | vou_dev->status = SH_VOU_RUNNING; | |
349 | sh_vou_reg_a_write(vou_dev, VOUER, 0x107); | |
350 | } | |
351 | } | |
352 | ||
353 | static void sh_vou_buf_release(struct videobuf_queue *vq, | |
354 | struct videobuf_buffer *vb) | |
355 | { | |
356 | struct video_device *vdev = vq->priv_data; | |
357 | struct sh_vou_device *vou_dev = video_get_drvdata(vdev); | |
358 | unsigned long flags; | |
359 | ||
d899eddd | 360 | dev_dbg(vou_dev->v4l2_dev.dev, "%s()\n", __func__); |
a81fb9b2 GL |
361 | |
362 | spin_lock_irqsave(&vou_dev->lock, flags); | |
363 | ||
364 | if (vou_dev->active == vb) { | |
365 | /* disable output */ | |
366 | sh_vou_reg_a_set(vou_dev, VOUER, 0, 1); | |
367 | /* ...but the current frame will complete */ | |
368 | sh_vou_reg_a_set(vou_dev, VOUIR, 0, 0x30000); | |
369 | vou_dev->active = NULL; | |
370 | } | |
371 | ||
372 | if ((vb->state == VIDEOBUF_ACTIVE || vb->state == VIDEOBUF_QUEUED)) { | |
373 | vb->state = VIDEOBUF_ERROR; | |
374 | list_del(&vb->queue); | |
375 | } | |
376 | ||
377 | spin_unlock_irqrestore(&vou_dev->lock, flags); | |
378 | ||
379 | free_buffer(vq, vb); | |
380 | } | |
381 | ||
382 | static struct videobuf_queue_ops sh_vou_video_qops = { | |
383 | .buf_setup = sh_vou_buf_setup, | |
384 | .buf_prepare = sh_vou_buf_prepare, | |
385 | .buf_queue = sh_vou_buf_queue, | |
386 | .buf_release = sh_vou_buf_release, | |
387 | }; | |
388 | ||
389 | /* Video IOCTLs */ | |
390 | static int sh_vou_querycap(struct file *file, void *priv, | |
391 | struct v4l2_capability *cap) | |
392 | { | |
d899eddd | 393 | struct sh_vou_device *vou_dev = video_drvdata(file); |
a81fb9b2 | 394 | |
d899eddd | 395 | dev_dbg(vou_dev->v4l2_dev.dev, "%s()\n", __func__); |
a81fb9b2 GL |
396 | |
397 | strlcpy(cap->card, "SuperH VOU", sizeof(cap->card)); | |
a81fb9b2 GL |
398 | cap->capabilities = V4L2_CAP_VIDEO_OUTPUT | V4L2_CAP_STREAMING; |
399 | return 0; | |
400 | } | |
401 | ||
402 | /* Enumerate formats, that the device can accept from the user */ | |
403 | static int sh_vou_enum_fmt_vid_out(struct file *file, void *priv, | |
404 | struct v4l2_fmtdesc *fmt) | |
405 | { | |
d899eddd | 406 | struct sh_vou_device *vou_dev = video_drvdata(file); |
a81fb9b2 GL |
407 | |
408 | if (fmt->index >= ARRAY_SIZE(vou_fmt)) | |
409 | return -EINVAL; | |
410 | ||
d899eddd | 411 | dev_dbg(vou_dev->v4l2_dev.dev, "%s()\n", __func__); |
a81fb9b2 GL |
412 | |
413 | fmt->type = V4L2_BUF_TYPE_VIDEO_OUTPUT; | |
414 | strlcpy(fmt->description, vou_fmt[fmt->index].desc, | |
415 | sizeof(fmt->description)); | |
416 | fmt->pixelformat = vou_fmt[fmt->index].pfmt; | |
417 | ||
418 | return 0; | |
419 | } | |
420 | ||
421 | static int sh_vou_g_fmt_vid_out(struct file *file, void *priv, | |
422 | struct v4l2_format *fmt) | |
423 | { | |
fd51625d | 424 | struct sh_vou_device *vou_dev = video_drvdata(file); |
a81fb9b2 GL |
425 | |
426 | dev_dbg(vou_dev->v4l2_dev.dev, "%s()\n", __func__); | |
427 | ||
428 | fmt->type = V4L2_BUF_TYPE_VIDEO_OUTPUT; | |
429 | fmt->fmt.pix = vou_dev->pix; | |
430 | ||
431 | return 0; | |
432 | } | |
433 | ||
434 | static const unsigned char vou_scale_h_num[] = {1, 9, 2, 9, 4}; | |
435 | static const unsigned char vou_scale_h_den[] = {1, 8, 1, 4, 1}; | |
436 | static const unsigned char vou_scale_h_fld[] = {0, 2, 1, 3}; | |
437 | static const unsigned char vou_scale_v_num[] = {1, 2, 4}; | |
438 | static const unsigned char vou_scale_v_den[] = {1, 1, 1}; | |
439 | static const unsigned char vou_scale_v_fld[] = {0, 1}; | |
440 | ||
441 | static void sh_vou_configure_geometry(struct sh_vou_device *vou_dev, | |
442 | int pix_idx, int w_idx, int h_idx) | |
443 | { | |
444 | struct sh_vou_fmt *fmt = vou_fmt + pix_idx; | |
445 | unsigned int black_left, black_top, width_max, height_max, | |
446 | frame_in_height, frame_out_height, frame_out_top; | |
447 | struct v4l2_rect *rect = &vou_dev->rect; | |
448 | struct v4l2_pix_format *pix = &vou_dev->pix; | |
449 | u32 vouvcr = 0, dsr_h, dsr_v; | |
450 | ||
451 | if (vou_dev->std & V4L2_STD_525_60) { | |
452 | width_max = 858; | |
453 | height_max = 262; | |
454 | } else { | |
455 | width_max = 864; | |
456 | height_max = 312; | |
457 | } | |
458 | ||
459 | frame_in_height = pix->height / 2; | |
460 | frame_out_height = rect->height / 2; | |
461 | frame_out_top = rect->top / 2; | |
462 | ||
463 | /* | |
464 | * Cropping scheme: max useful image is 720x480, and the total video | |
465 | * area is 858x525 (NTSC) or 864x625 (PAL). AK8813 / 8814 starts | |
466 | * sampling data beginning with fixed 276th (NTSC) / 288th (PAL) clock, | |
467 | * of which the first 33 / 25 clocks HSYNC must be held active. This | |
468 | * has to be configured in CR[HW]. 1 pixel equals 2 clock periods. | |
469 | * This gives CR[HW] = 16 / 12, VPR[HVP] = 138 / 144, which gives | |
470 | * exactly 858 - 138 = 864 - 144 = 720! We call the out-of-display area, | |
471 | * beyond DSR, specified on the left and top by the VPR register "black | |
472 | * pixels" and out-of-image area (DPR) "background pixels." We fix VPR | |
473 | * at 138 / 144 : 20, because that's the HSYNC timing, that our first | |
474 | * client requires, and that's exactly what leaves us 720 pixels for the | |
475 | * image; we leave VPR[VVP] at default 20 for now, because the client | |
476 | * doesn't seem to have any special requirements for it. Otherwise we | |
477 | * could also set it to max - 240 = 22 / 72. Thus VPR depends only on | |
478 | * the selected standard, and DPR and DSR are selected according to | |
479 | * cropping. Q: how does the client detect the first valid line? Does | |
480 | * HSYNC stay inactive during invalid (black) lines? | |
481 | */ | |
482 | black_left = width_max - VOU_MAX_IMAGE_WIDTH; | |
483 | black_top = 20; | |
484 | ||
485 | dsr_h = rect->width + rect->left; | |
486 | dsr_v = frame_out_height + frame_out_top; | |
487 | ||
488 | dev_dbg(vou_dev->v4l2_dev.dev, | |
489 | "image %ux%u, black %u:%u, offset %u:%u, display %ux%u\n", | |
490 | pix->width, frame_in_height, black_left, black_top, | |
491 | rect->left, frame_out_top, dsr_h, dsr_v); | |
492 | ||
493 | /* VOUISR height - half of a frame height in frame mode */ | |
494 | sh_vou_reg_ab_write(vou_dev, VOUISR, (pix->width << 16) | frame_in_height); | |
495 | sh_vou_reg_ab_write(vou_dev, VOUVPR, (black_left << 16) | black_top); | |
496 | sh_vou_reg_ab_write(vou_dev, VOUDPR, (rect->left << 16) | frame_out_top); | |
497 | sh_vou_reg_ab_write(vou_dev, VOUDSR, (dsr_h << 16) | dsr_v); | |
498 | ||
499 | /* | |
500 | * if necessary, we could set VOUHIR to | |
501 | * max(black_left + dsr_h, width_max) here | |
502 | */ | |
503 | ||
504 | if (w_idx) | |
505 | vouvcr |= (1 << 15) | (vou_scale_h_fld[w_idx - 1] << 4); | |
506 | if (h_idx) | |
507 | vouvcr |= (1 << 14) | vou_scale_v_fld[h_idx - 1]; | |
508 | ||
509 | dev_dbg(vou_dev->v4l2_dev.dev, "%s: scaling 0x%x\n", fmt->desc, vouvcr); | |
510 | ||
511 | /* To produce a colour bar for testing set bit 23 of VOUVCR */ | |
512 | sh_vou_reg_ab_write(vou_dev, VOUVCR, vouvcr); | |
513 | sh_vou_reg_ab_write(vou_dev, VOUDFR, | |
514 | fmt->pkf | (fmt->yf << 8) | (fmt->rgb << 16)); | |
515 | } | |
516 | ||
517 | struct sh_vou_geometry { | |
518 | struct v4l2_rect output; | |
519 | unsigned int in_width; | |
520 | unsigned int in_height; | |
521 | int scale_idx_h; | |
522 | int scale_idx_v; | |
523 | }; | |
524 | ||
525 | /* | |
526 | * Find input geometry, that we can use to produce output, closest to the | |
527 | * requested rectangle, using VOU scaling | |
528 | */ | |
529 | static void vou_adjust_input(struct sh_vou_geometry *geo, v4l2_std_id std) | |
530 | { | |
531 | /* The compiler cannot know, that best and idx will indeed be set */ | |
765fe17c | 532 | unsigned int best_err = UINT_MAX, best = 0, img_height_max; |
a81fb9b2 GL |
533 | int i, idx = 0; |
534 | ||
765fe17c GL |
535 | if (std & V4L2_STD_525_60) |
536 | img_height_max = 480; | |
537 | else | |
538 | img_height_max = 576; | |
a81fb9b2 GL |
539 | |
540 | /* Image width must be a multiple of 4 */ | |
541 | v4l_bound_align_image(&geo->in_width, 0, VOU_MAX_IMAGE_WIDTH, 2, | |
765fe17c | 542 | &geo->in_height, 0, img_height_max, 1, 0); |
a81fb9b2 GL |
543 | |
544 | /* Select scales to come as close as possible to the output image */ | |
545 | for (i = ARRAY_SIZE(vou_scale_h_num) - 1; i >= 0; i--) { | |
546 | unsigned int err; | |
547 | unsigned int found = geo->output.width * vou_scale_h_den[i] / | |
548 | vou_scale_h_num[i]; | |
549 | ||
550 | if (found > VOU_MAX_IMAGE_WIDTH) | |
551 | /* scales increase */ | |
552 | break; | |
553 | ||
554 | err = abs(found - geo->in_width); | |
555 | if (err < best_err) { | |
556 | best_err = err; | |
557 | idx = i; | |
558 | best = found; | |
559 | } | |
560 | if (!err) | |
561 | break; | |
562 | } | |
563 | ||
564 | geo->in_width = best; | |
565 | geo->scale_idx_h = idx; | |
566 | ||
567 | best_err = UINT_MAX; | |
568 | ||
569 | /* This loop can be replaced with one division */ | |
570 | for (i = ARRAY_SIZE(vou_scale_v_num) - 1; i >= 0; i--) { | |
571 | unsigned int err; | |
572 | unsigned int found = geo->output.height * vou_scale_v_den[i] / | |
573 | vou_scale_v_num[i]; | |
574 | ||
765fe17c | 575 | if (found > img_height_max) |
a81fb9b2 GL |
576 | /* scales increase */ |
577 | break; | |
578 | ||
579 | err = abs(found - geo->in_height); | |
580 | if (err < best_err) { | |
581 | best_err = err; | |
582 | idx = i; | |
583 | best = found; | |
584 | } | |
585 | if (!err) | |
586 | break; | |
587 | } | |
588 | ||
589 | geo->in_height = best; | |
590 | geo->scale_idx_v = idx; | |
591 | } | |
592 | ||
593 | /* | |
594 | * Find output geometry, that we can produce, using VOU scaling, closest to | |
595 | * the requested rectangle | |
596 | */ | |
597 | static void vou_adjust_output(struct sh_vou_geometry *geo, v4l2_std_id std) | |
598 | { | |
bc1ebd70 GL |
599 | unsigned int best_err = UINT_MAX, best = geo->in_width, |
600 | width_max, height_max, img_height_max; | |
601 | int i, idx = 0; | |
a81fb9b2 GL |
602 | |
603 | if (std & V4L2_STD_525_60) { | |
604 | width_max = 858; | |
605 | height_max = 262 * 2; | |
765fe17c | 606 | img_height_max = 480; |
a81fb9b2 GL |
607 | } else { |
608 | width_max = 864; | |
609 | height_max = 312 * 2; | |
765fe17c | 610 | img_height_max = 576; |
a81fb9b2 GL |
611 | } |
612 | ||
613 | /* Select scales to come as close as possible to the output image */ | |
614 | for (i = 0; i < ARRAY_SIZE(vou_scale_h_num); i++) { | |
615 | unsigned int err; | |
616 | unsigned int found = geo->in_width * vou_scale_h_num[i] / | |
617 | vou_scale_h_den[i]; | |
618 | ||
619 | if (found > VOU_MAX_IMAGE_WIDTH) | |
620 | /* scales increase */ | |
621 | break; | |
622 | ||
623 | err = abs(found - geo->output.width); | |
624 | if (err < best_err) { | |
625 | best_err = err; | |
626 | idx = i; | |
627 | best = found; | |
628 | } | |
629 | if (!err) | |
630 | break; | |
631 | } | |
632 | ||
633 | geo->output.width = best; | |
634 | geo->scale_idx_h = idx; | |
635 | if (geo->output.left + best > width_max) | |
636 | geo->output.left = width_max - best; | |
637 | ||
638 | pr_debug("%s(): W %u * %u/%u = %u\n", __func__, geo->in_width, | |
639 | vou_scale_h_num[idx], vou_scale_h_den[idx], best); | |
640 | ||
641 | best_err = UINT_MAX; | |
642 | ||
643 | /* This loop can be replaced with one division */ | |
644 | for (i = 0; i < ARRAY_SIZE(vou_scale_v_num); i++) { | |
645 | unsigned int err; | |
646 | unsigned int found = geo->in_height * vou_scale_v_num[i] / | |
647 | vou_scale_v_den[i]; | |
648 | ||
765fe17c | 649 | if (found > img_height_max) |
a81fb9b2 GL |
650 | /* scales increase */ |
651 | break; | |
652 | ||
653 | err = abs(found - geo->output.height); | |
654 | if (err < best_err) { | |
655 | best_err = err; | |
656 | idx = i; | |
657 | best = found; | |
658 | } | |
659 | if (!err) | |
660 | break; | |
661 | } | |
662 | ||
663 | geo->output.height = best; | |
664 | geo->scale_idx_v = idx; | |
665 | if (geo->output.top + best > height_max) | |
666 | geo->output.top = height_max - best; | |
667 | ||
668 | pr_debug("%s(): H %u * %u/%u = %u\n", __func__, geo->in_height, | |
669 | vou_scale_v_num[idx], vou_scale_v_den[idx], best); | |
670 | } | |
671 | ||
672 | static int sh_vou_s_fmt_vid_out(struct file *file, void *priv, | |
673 | struct v4l2_format *fmt) | |
674 | { | |
fd51625d | 675 | struct sh_vou_device *vou_dev = video_drvdata(file); |
a81fb9b2 | 676 | struct v4l2_pix_format *pix = &fmt->fmt.pix; |
765fe17c | 677 | unsigned int img_height_max; |
a81fb9b2 GL |
678 | int pix_idx; |
679 | struct sh_vou_geometry geo; | |
680 | struct v4l2_mbus_framefmt mbfmt = { | |
681 | /* Revisit: is this the correct code? */ | |
ace6e979 | 682 | .code = V4L2_MBUS_FMT_YUYV8_2X8, |
a81fb9b2 GL |
683 | .field = V4L2_FIELD_INTERLACED, |
684 | .colorspace = V4L2_COLORSPACE_SMPTE170M, | |
685 | }; | |
686 | int ret; | |
687 | ||
688 | dev_dbg(vou_dev->v4l2_dev.dev, "%s(): %ux%u -> %ux%u\n", __func__, | |
689 | vou_dev->rect.width, vou_dev->rect.height, | |
690 | pix->width, pix->height); | |
691 | ||
692 | if (pix->field == V4L2_FIELD_ANY) | |
693 | pix->field = V4L2_FIELD_NONE; | |
694 | ||
695 | if (fmt->type != V4L2_BUF_TYPE_VIDEO_OUTPUT || | |
696 | pix->field != V4L2_FIELD_NONE) | |
697 | return -EINVAL; | |
698 | ||
699 | for (pix_idx = 0; pix_idx < ARRAY_SIZE(vou_fmt); pix_idx++) | |
700 | if (vou_fmt[pix_idx].pfmt == pix->pixelformat) | |
701 | break; | |
702 | ||
703 | if (pix_idx == ARRAY_SIZE(vou_fmt)) | |
704 | return -EINVAL; | |
705 | ||
765fe17c GL |
706 | if (vou_dev->std & V4L2_STD_525_60) |
707 | img_height_max = 480; | |
708 | else | |
709 | img_height_max = 576; | |
710 | ||
a81fb9b2 GL |
711 | /* Image width must be a multiple of 4 */ |
712 | v4l_bound_align_image(&pix->width, 0, VOU_MAX_IMAGE_WIDTH, 2, | |
765fe17c | 713 | &pix->height, 0, img_height_max, 1, 0); |
a81fb9b2 GL |
714 | |
715 | geo.in_width = pix->width; | |
716 | geo.in_height = pix->height; | |
717 | geo.output = vou_dev->rect; | |
718 | ||
719 | vou_adjust_output(&geo, vou_dev->std); | |
720 | ||
721 | mbfmt.width = geo.output.width; | |
722 | mbfmt.height = geo.output.height; | |
723 | ret = v4l2_device_call_until_err(&vou_dev->v4l2_dev, 0, video, | |
724 | s_mbus_fmt, &mbfmt); | |
725 | /* Must be implemented, so, don't check for -ENOIOCTLCMD */ | |
726 | if (ret < 0) | |
727 | return ret; | |
728 | ||
729 | dev_dbg(vou_dev->v4l2_dev.dev, "%s(): %ux%u -> %ux%u\n", __func__, | |
730 | geo.output.width, geo.output.height, mbfmt.width, mbfmt.height); | |
731 | ||
732 | /* Sanity checks */ | |
733 | if ((unsigned)mbfmt.width > VOU_MAX_IMAGE_WIDTH || | |
765fe17c | 734 | (unsigned)mbfmt.height > img_height_max || |
ace6e979 | 735 | mbfmt.code != V4L2_MBUS_FMT_YUYV8_2X8) |
a81fb9b2 GL |
736 | return -EIO; |
737 | ||
738 | if (mbfmt.width != geo.output.width || | |
739 | mbfmt.height != geo.output.height) { | |
740 | geo.output.width = mbfmt.width; | |
741 | geo.output.height = mbfmt.height; | |
742 | ||
743 | vou_adjust_input(&geo, vou_dev->std); | |
744 | } | |
745 | ||
746 | /* We tried to preserve output rectangle, but it could have changed */ | |
747 | vou_dev->rect = geo.output; | |
748 | pix->width = geo.in_width; | |
749 | pix->height = geo.in_height; | |
750 | ||
751 | dev_dbg(vou_dev->v4l2_dev.dev, "%s(): %ux%u\n", __func__, | |
752 | pix->width, pix->height); | |
753 | ||
754 | vou_dev->pix_idx = pix_idx; | |
755 | ||
756 | vou_dev->pix = *pix; | |
757 | ||
758 | sh_vou_configure_geometry(vou_dev, pix_idx, | |
759 | geo.scale_idx_h, geo.scale_idx_v); | |
760 | ||
761 | return 0; | |
762 | } | |
763 | ||
764 | static int sh_vou_try_fmt_vid_out(struct file *file, void *priv, | |
765 | struct v4l2_format *fmt) | |
766 | { | |
d899eddd | 767 | struct sh_vou_device *vou_dev = video_drvdata(file); |
a81fb9b2 GL |
768 | struct v4l2_pix_format *pix = &fmt->fmt.pix; |
769 | int i; | |
770 | ||
d899eddd | 771 | dev_dbg(vou_dev->v4l2_dev.dev, "%s()\n", __func__); |
a81fb9b2 GL |
772 | |
773 | fmt->type = V4L2_BUF_TYPE_VIDEO_OUTPUT; | |
774 | pix->field = V4L2_FIELD_NONE; | |
775 | ||
776 | v4l_bound_align_image(&pix->width, 0, VOU_MAX_IMAGE_WIDTH, 1, | |
777 | &pix->height, 0, VOU_MAX_IMAGE_HEIGHT, 1, 0); | |
778 | ||
8212db57 | 779 | for (i = 0; i < ARRAY_SIZE(vou_fmt); i++) |
a81fb9b2 GL |
780 | if (vou_fmt[i].pfmt == pix->pixelformat) |
781 | return 0; | |
782 | ||
783 | pix->pixelformat = vou_fmt[0].pfmt; | |
784 | ||
785 | return 0; | |
786 | } | |
787 | ||
788 | static int sh_vou_reqbufs(struct file *file, void *priv, | |
789 | struct v4l2_requestbuffers *req) | |
790 | { | |
d899eddd | 791 | struct sh_vou_device *vou_dev = video_drvdata(file); |
a81fb9b2 GL |
792 | struct sh_vou_file *vou_file = priv; |
793 | ||
d899eddd | 794 | dev_dbg(vou_dev->v4l2_dev.dev, "%s()\n", __func__); |
a81fb9b2 GL |
795 | |
796 | if (req->type != V4L2_BUF_TYPE_VIDEO_OUTPUT) | |
797 | return -EINVAL; | |
798 | ||
799 | return videobuf_reqbufs(&vou_file->vbq, req); | |
800 | } | |
801 | ||
802 | static int sh_vou_querybuf(struct file *file, void *priv, | |
803 | struct v4l2_buffer *b) | |
804 | { | |
d899eddd | 805 | struct sh_vou_device *vou_dev = video_drvdata(file); |
a81fb9b2 GL |
806 | struct sh_vou_file *vou_file = priv; |
807 | ||
d899eddd | 808 | dev_dbg(vou_dev->v4l2_dev.dev, "%s()\n", __func__); |
a81fb9b2 GL |
809 | |
810 | return videobuf_querybuf(&vou_file->vbq, b); | |
811 | } | |
812 | ||
813 | static int sh_vou_qbuf(struct file *file, void *priv, struct v4l2_buffer *b) | |
814 | { | |
d899eddd | 815 | struct sh_vou_device *vou_dev = video_drvdata(file); |
a81fb9b2 GL |
816 | struct sh_vou_file *vou_file = priv; |
817 | ||
d899eddd | 818 | dev_dbg(vou_dev->v4l2_dev.dev, "%s()\n", __func__); |
a81fb9b2 GL |
819 | |
820 | return videobuf_qbuf(&vou_file->vbq, b); | |
821 | } | |
822 | ||
823 | static int sh_vou_dqbuf(struct file *file, void *priv, struct v4l2_buffer *b) | |
824 | { | |
d899eddd | 825 | struct sh_vou_device *vou_dev = video_drvdata(file); |
a81fb9b2 GL |
826 | struct sh_vou_file *vou_file = priv; |
827 | ||
d899eddd | 828 | dev_dbg(vou_dev->v4l2_dev.dev, "%s()\n", __func__); |
a81fb9b2 GL |
829 | |
830 | return videobuf_dqbuf(&vou_file->vbq, b, file->f_flags & O_NONBLOCK); | |
831 | } | |
832 | ||
833 | static int sh_vou_streamon(struct file *file, void *priv, | |
834 | enum v4l2_buf_type buftype) | |
835 | { | |
fd51625d | 836 | struct sh_vou_device *vou_dev = video_drvdata(file); |
a81fb9b2 GL |
837 | struct sh_vou_file *vou_file = priv; |
838 | int ret; | |
839 | ||
d899eddd | 840 | dev_dbg(vou_dev->v4l2_dev.dev, "%s()\n", __func__); |
a81fb9b2 GL |
841 | |
842 | ret = v4l2_device_call_until_err(&vou_dev->v4l2_dev, 0, | |
843 | video, s_stream, 1); | |
844 | if (ret < 0 && ret != -ENOIOCTLCMD) | |
845 | return ret; | |
846 | ||
847 | /* This calls our .buf_queue() (== sh_vou_buf_queue) */ | |
848 | return videobuf_streamon(&vou_file->vbq); | |
849 | } | |
850 | ||
851 | static int sh_vou_streamoff(struct file *file, void *priv, | |
852 | enum v4l2_buf_type buftype) | |
853 | { | |
fd51625d | 854 | struct sh_vou_device *vou_dev = video_drvdata(file); |
a81fb9b2 GL |
855 | struct sh_vou_file *vou_file = priv; |
856 | ||
d899eddd | 857 | dev_dbg(vou_dev->v4l2_dev.dev, "%s()\n", __func__); |
a81fb9b2 GL |
858 | |
859 | /* | |
860 | * This calls buf_release from host driver's videobuf_queue_ops for all | |
861 | * remaining buffers. When the last buffer is freed, stop streaming | |
862 | */ | |
863 | videobuf_streamoff(&vou_file->vbq); | |
864 | v4l2_device_call_until_err(&vou_dev->v4l2_dev, 0, video, s_stream, 0); | |
865 | ||
866 | return 0; | |
867 | } | |
868 | ||
869 | static u32 sh_vou_ntsc_mode(enum sh_vou_bus_fmt bus_fmt) | |
870 | { | |
871 | switch (bus_fmt) { | |
872 | default: | |
873 | pr_warning("%s(): Invalid bus-format code %d, using default 8-bit\n", | |
874 | __func__, bus_fmt); | |
875 | case SH_VOU_BUS_8BIT: | |
876 | return 1; | |
877 | case SH_VOU_BUS_16BIT: | |
878 | return 0; | |
879 | case SH_VOU_BUS_BT656: | |
880 | return 3; | |
881 | } | |
882 | } | |
883 | ||
314527ac | 884 | static int sh_vou_s_std(struct file *file, void *priv, v4l2_std_id std_id) |
a81fb9b2 | 885 | { |
fd51625d | 886 | struct sh_vou_device *vou_dev = video_drvdata(file); |
a81fb9b2 GL |
887 | int ret; |
888 | ||
314527ac | 889 | dev_dbg(vou_dev->v4l2_dev.dev, "%s(): 0x%llx\n", __func__, std_id); |
a81fb9b2 | 890 | |
314527ac | 891 | if (std_id & ~vou_dev->vdev->tvnorms) |
a81fb9b2 GL |
892 | return -EINVAL; |
893 | ||
894 | ret = v4l2_device_call_until_err(&vou_dev->v4l2_dev, 0, video, | |
314527ac | 895 | s_std_output, std_id); |
a81fb9b2 GL |
896 | /* Shall we continue, if the subdev doesn't support .s_std_output()? */ |
897 | if (ret < 0 && ret != -ENOIOCTLCMD) | |
898 | return ret; | |
899 | ||
314527ac | 900 | if (std_id & V4L2_STD_525_60) |
a81fb9b2 GL |
901 | sh_vou_reg_ab_set(vou_dev, VOUCR, |
902 | sh_vou_ntsc_mode(vou_dev->pdata->bus_fmt) << 29, 7 << 29); | |
903 | else | |
904 | sh_vou_reg_ab_set(vou_dev, VOUCR, 5 << 29, 7 << 29); | |
905 | ||
314527ac | 906 | vou_dev->std = std_id; |
a81fb9b2 GL |
907 | |
908 | return 0; | |
909 | } | |
910 | ||
911 | static int sh_vou_g_std(struct file *file, void *priv, v4l2_std_id *std) | |
912 | { | |
fd51625d | 913 | struct sh_vou_device *vou_dev = video_drvdata(file); |
a81fb9b2 GL |
914 | |
915 | dev_dbg(vou_dev->v4l2_dev.dev, "%s()\n", __func__); | |
916 | ||
917 | *std = vou_dev->std; | |
918 | ||
919 | return 0; | |
920 | } | |
921 | ||
922 | static int sh_vou_g_crop(struct file *file, void *fh, struct v4l2_crop *a) | |
923 | { | |
fd51625d | 924 | struct sh_vou_device *vou_dev = video_drvdata(file); |
a81fb9b2 GL |
925 | |
926 | dev_dbg(vou_dev->v4l2_dev.dev, "%s()\n", __func__); | |
927 | ||
928 | a->type = V4L2_BUF_TYPE_VIDEO_OUTPUT; | |
929 | a->c = vou_dev->rect; | |
930 | ||
931 | return 0; | |
932 | } | |
933 | ||
934 | /* Assume a dull encoder, do all the work ourselves. */ | |
4f996594 | 935 | static int sh_vou_s_crop(struct file *file, void *fh, const struct v4l2_crop *a) |
a81fb9b2 | 936 | { |
17803580 | 937 | struct v4l2_crop a_writable = *a; |
fd51625d | 938 | struct sh_vou_device *vou_dev = video_drvdata(file); |
17803580 | 939 | struct v4l2_rect *rect = &a_writable.c; |
a81fb9b2 GL |
940 | struct v4l2_crop sd_crop = {.type = V4L2_BUF_TYPE_VIDEO_OUTPUT}; |
941 | struct v4l2_pix_format *pix = &vou_dev->pix; | |
942 | struct sh_vou_geometry geo; | |
943 | struct v4l2_mbus_framefmt mbfmt = { | |
944 | /* Revisit: is this the correct code? */ | |
ace6e979 | 945 | .code = V4L2_MBUS_FMT_YUYV8_2X8, |
a81fb9b2 GL |
946 | .field = V4L2_FIELD_INTERLACED, |
947 | .colorspace = V4L2_COLORSPACE_SMPTE170M, | |
948 | }; | |
765fe17c | 949 | unsigned int img_height_max; |
a81fb9b2 GL |
950 | int ret; |
951 | ||
952 | dev_dbg(vou_dev->v4l2_dev.dev, "%s(): %ux%u@%u:%u\n", __func__, | |
953 | rect->width, rect->height, rect->left, rect->top); | |
954 | ||
955 | if (a->type != V4L2_BUF_TYPE_VIDEO_OUTPUT) | |
956 | return -EINVAL; | |
957 | ||
765fe17c GL |
958 | if (vou_dev->std & V4L2_STD_525_60) |
959 | img_height_max = 480; | |
960 | else | |
961 | img_height_max = 576; | |
962 | ||
a81fb9b2 | 963 | v4l_bound_align_image(&rect->width, 0, VOU_MAX_IMAGE_WIDTH, 1, |
765fe17c | 964 | &rect->height, 0, img_height_max, 1, 0); |
a81fb9b2 GL |
965 | |
966 | if (rect->width + rect->left > VOU_MAX_IMAGE_WIDTH) | |
967 | rect->left = VOU_MAX_IMAGE_WIDTH - rect->width; | |
968 | ||
765fe17c GL |
969 | if (rect->height + rect->top > img_height_max) |
970 | rect->top = img_height_max - rect->height; | |
a81fb9b2 GL |
971 | |
972 | geo.output = *rect; | |
973 | geo.in_width = pix->width; | |
974 | geo.in_height = pix->height; | |
975 | ||
976 | /* Configure the encoder one-to-one, position at 0, ignore errors */ | |
977 | sd_crop.c.width = geo.output.width; | |
978 | sd_crop.c.height = geo.output.height; | |
979 | /* | |
980 | * We first issue a S_CROP, so that the subsequent S_FMT delivers the | |
981 | * final encoder configuration. | |
982 | */ | |
983 | v4l2_device_call_until_err(&vou_dev->v4l2_dev, 0, video, | |
984 | s_crop, &sd_crop); | |
985 | mbfmt.width = geo.output.width; | |
986 | mbfmt.height = geo.output.height; | |
987 | ret = v4l2_device_call_until_err(&vou_dev->v4l2_dev, 0, video, | |
988 | s_mbus_fmt, &mbfmt); | |
989 | /* Must be implemented, so, don't check for -ENOIOCTLCMD */ | |
990 | if (ret < 0) | |
991 | return ret; | |
992 | ||
993 | /* Sanity checks */ | |
994 | if ((unsigned)mbfmt.width > VOU_MAX_IMAGE_WIDTH || | |
765fe17c | 995 | (unsigned)mbfmt.height > img_height_max || |
ace6e979 | 996 | mbfmt.code != V4L2_MBUS_FMT_YUYV8_2X8) |
a81fb9b2 GL |
997 | return -EIO; |
998 | ||
999 | geo.output.width = mbfmt.width; | |
1000 | geo.output.height = mbfmt.height; | |
1001 | ||
1002 | /* | |
1003 | * No down-scaling. According to the API, current call has precedence: | |
1004 | * http://v4l2spec.bytesex.org/spec/x1904.htm#AEN1954 paragraph two. | |
1005 | */ | |
1006 | vou_adjust_input(&geo, vou_dev->std); | |
1007 | ||
1008 | /* We tried to preserve output rectangle, but it could have changed */ | |
1009 | vou_dev->rect = geo.output; | |
1010 | pix->width = geo.in_width; | |
1011 | pix->height = geo.in_height; | |
1012 | ||
1013 | sh_vou_configure_geometry(vou_dev, vou_dev->pix_idx, | |
1014 | geo.scale_idx_h, geo.scale_idx_v); | |
1015 | ||
1016 | return 0; | |
1017 | } | |
1018 | ||
1019 | /* | |
1020 | * Total field: NTSC 858 x 2 * 262/263, PAL 864 x 2 * 312/313, default rectangle | |
1021 | * is the initial register values, height takes the interlaced format into | |
1022 | * account. The actual image can only go up to 720 x 2 * 240, So, VOUVPR can | |
1023 | * actually only meaningfully contain values <= 720 and <= 240 respectively, and | |
1024 | * not <= 864 and <= 312. | |
1025 | */ | |
1026 | static int sh_vou_cropcap(struct file *file, void *priv, | |
1027 | struct v4l2_cropcap *a) | |
1028 | { | |
d899eddd | 1029 | struct sh_vou_device *vou_dev = video_drvdata(file); |
a81fb9b2 | 1030 | |
d899eddd | 1031 | dev_dbg(vou_dev->v4l2_dev.dev, "%s()\n", __func__); |
a81fb9b2 GL |
1032 | |
1033 | a->type = V4L2_BUF_TYPE_VIDEO_OUTPUT; | |
1034 | a->bounds.left = 0; | |
1035 | a->bounds.top = 0; | |
1036 | a->bounds.width = VOU_MAX_IMAGE_WIDTH; | |
1037 | a->bounds.height = VOU_MAX_IMAGE_HEIGHT; | |
1038 | /* Default = max, set VOUDPR = 0, which is not hardware default */ | |
1039 | a->defrect.left = 0; | |
1040 | a->defrect.top = 0; | |
1041 | a->defrect.width = VOU_MAX_IMAGE_WIDTH; | |
1042 | a->defrect.height = VOU_MAX_IMAGE_HEIGHT; | |
1043 | a->pixelaspect.numerator = 1; | |
1044 | a->pixelaspect.denominator = 1; | |
1045 | ||
1046 | return 0; | |
1047 | } | |
1048 | ||
1049 | static irqreturn_t sh_vou_isr(int irq, void *dev_id) | |
1050 | { | |
1051 | struct sh_vou_device *vou_dev = dev_id; | |
1052 | static unsigned long j; | |
1053 | struct videobuf_buffer *vb; | |
1054 | static int cnt; | |
1055 | static int side; | |
1056 | u32 irq_status = sh_vou_reg_a_read(vou_dev, VOUIR), masked; | |
1057 | u32 vou_status = sh_vou_reg_a_read(vou_dev, VOUSTR); | |
1058 | ||
1059 | if (!(irq_status & 0x300)) { | |
1060 | if (printk_timed_ratelimit(&j, 500)) | |
1061 | dev_warn(vou_dev->v4l2_dev.dev, "IRQ status 0x%x!\n", | |
1062 | irq_status); | |
1063 | return IRQ_NONE; | |
1064 | } | |
1065 | ||
1066 | spin_lock(&vou_dev->lock); | |
1067 | if (!vou_dev->active || list_empty(&vou_dev->queue)) { | |
1068 | if (printk_timed_ratelimit(&j, 500)) | |
1069 | dev_warn(vou_dev->v4l2_dev.dev, | |
1070 | "IRQ without active buffer: %x!\n", irq_status); | |
1071 | /* Just ack: buf_release will disable further interrupts */ | |
1072 | sh_vou_reg_a_set(vou_dev, VOUIR, 0, 0x300); | |
1073 | spin_unlock(&vou_dev->lock); | |
1074 | return IRQ_HANDLED; | |
1075 | } | |
1076 | ||
1077 | masked = ~(0x300 & irq_status) & irq_status & 0x30304; | |
1078 | dev_dbg(vou_dev->v4l2_dev.dev, | |
1079 | "IRQ status 0x%x -> 0x%x, VOU status 0x%x, cnt %d\n", | |
1080 | irq_status, masked, vou_status, cnt); | |
1081 | ||
1082 | cnt++; | |
1083 | side = vou_status & 0x10000; | |
1084 | ||
1085 | /* Clear only set interrupts */ | |
1086 | sh_vou_reg_a_write(vou_dev, VOUIR, masked); | |
1087 | ||
1088 | vb = vou_dev->active; | |
1089 | list_del(&vb->queue); | |
1090 | ||
1091 | vb->state = VIDEOBUF_DONE; | |
8e6057b5 | 1092 | v4l2_get_timestamp(&vb->ts); |
a81fb9b2 GL |
1093 | vb->field_count++; |
1094 | wake_up(&vb->done); | |
1095 | ||
1096 | if (list_empty(&vou_dev->queue)) { | |
1097 | /* Stop VOU */ | |
1098 | dev_dbg(vou_dev->v4l2_dev.dev, "%s: queue empty after %d\n", | |
1099 | __func__, cnt); | |
1100 | sh_vou_reg_a_set(vou_dev, VOUER, 0, 1); | |
1101 | vou_dev->active = NULL; | |
1102 | vou_dev->status = SH_VOU_INITIALISING; | |
1103 | /* Disable End-of-Frame (VSYNC) interrupts */ | |
1104 | sh_vou_reg_a_set(vou_dev, VOUIR, 0, 0x30000); | |
1105 | spin_unlock(&vou_dev->lock); | |
1106 | return IRQ_HANDLED; | |
1107 | } | |
1108 | ||
1109 | vou_dev->active = list_entry(vou_dev->queue.next, | |
1110 | struct videobuf_buffer, queue); | |
1111 | ||
1112 | if (vou_dev->active->queue.next != &vou_dev->queue) { | |
1113 | struct videobuf_buffer *new = list_entry(vou_dev->active->queue.next, | |
1114 | struct videobuf_buffer, queue); | |
1115 | sh_vou_schedule_next(vou_dev, new); | |
1116 | } | |
1117 | ||
1118 | spin_unlock(&vou_dev->lock); | |
1119 | ||
1120 | return IRQ_HANDLED; | |
1121 | } | |
1122 | ||
1123 | static int sh_vou_hw_init(struct sh_vou_device *vou_dev) | |
1124 | { | |
1125 | struct sh_vou_pdata *pdata = vou_dev->pdata; | |
1126 | u32 voucr = sh_vou_ntsc_mode(pdata->bus_fmt) << 29; | |
1127 | int i = 100; | |
1128 | ||
1129 | /* Disable all IRQs */ | |
1130 | sh_vou_reg_a_write(vou_dev, VOUIR, 0); | |
1131 | ||
1132 | /* Reset VOU interfaces - registers unaffected */ | |
1133 | sh_vou_reg_a_write(vou_dev, VOUSRR, 0x101); | |
1134 | while (--i && (sh_vou_reg_a_read(vou_dev, VOUSRR) & 0x101)) | |
1135 | udelay(1); | |
1136 | ||
1137 | if (!i) | |
1138 | return -ETIMEDOUT; | |
1139 | ||
1140 | dev_dbg(vou_dev->v4l2_dev.dev, "Reset took %dus\n", 100 - i); | |
1141 | ||
1142 | if (pdata->flags & SH_VOU_PCLK_FALLING) | |
1143 | voucr |= 1 << 28; | |
1144 | if (pdata->flags & SH_VOU_HSYNC_LOW) | |
1145 | voucr |= 1 << 27; | |
1146 | if (pdata->flags & SH_VOU_VSYNC_LOW) | |
1147 | voucr |= 1 << 26; | |
1148 | sh_vou_reg_ab_set(vou_dev, VOUCR, voucr, 0xfc000000); | |
1149 | ||
1150 | /* Manual register side switching at first */ | |
1151 | sh_vou_reg_a_write(vou_dev, VOURCR, 4); | |
1152 | /* Default - fixed HSYNC length, can be made configurable is required */ | |
1153 | sh_vou_reg_ab_write(vou_dev, VOUMSR, 0x800000); | |
1154 | ||
1155 | return 0; | |
1156 | } | |
1157 | ||
1158 | /* File operations */ | |
1159 | static int sh_vou_open(struct file *file) | |
1160 | { | |
fd51625d | 1161 | struct sh_vou_device *vou_dev = video_drvdata(file); |
a81fb9b2 GL |
1162 | struct sh_vou_file *vou_file = kzalloc(sizeof(struct sh_vou_file), |
1163 | GFP_KERNEL); | |
1164 | ||
1165 | if (!vou_file) | |
1166 | return -ENOMEM; | |
1167 | ||
1168 | dev_dbg(vou_dev->v4l2_dev.dev, "%s()\n", __func__); | |
1169 | ||
1170 | file->private_data = vou_file; | |
1171 | ||
f135a8a2 HV |
1172 | if (mutex_lock_interruptible(&vou_dev->fop_lock)) |
1173 | return -ERESTARTSYS; | |
a81fb9b2 GL |
1174 | if (atomic_inc_return(&vou_dev->use_count) == 1) { |
1175 | int ret; | |
1176 | /* First open */ | |
1177 | vou_dev->status = SH_VOU_INITIALISING; | |
fd51625d | 1178 | pm_runtime_get_sync(vou_dev->v4l2_dev.dev); |
a81fb9b2 GL |
1179 | ret = sh_vou_hw_init(vou_dev); |
1180 | if (ret < 0) { | |
1181 | atomic_dec(&vou_dev->use_count); | |
fd51625d | 1182 | pm_runtime_put(vou_dev->v4l2_dev.dev); |
a81fb9b2 | 1183 | vou_dev->status = SH_VOU_IDLE; |
f135a8a2 | 1184 | mutex_unlock(&vou_dev->fop_lock); |
a81fb9b2 GL |
1185 | return ret; |
1186 | } | |
1187 | } | |
1188 | ||
1189 | videobuf_queue_dma_contig_init(&vou_file->vbq, &sh_vou_video_qops, | |
1190 | vou_dev->v4l2_dev.dev, &vou_dev->lock, | |
1191 | V4L2_BUF_TYPE_VIDEO_OUTPUT, | |
1192 | V4L2_FIELD_NONE, | |
fd51625d LP |
1193 | sizeof(struct videobuf_buffer), |
1194 | vou_dev->vdev, &vou_dev->fop_lock); | |
f135a8a2 | 1195 | mutex_unlock(&vou_dev->fop_lock); |
a81fb9b2 GL |
1196 | |
1197 | return 0; | |
1198 | } | |
1199 | ||
1200 | static int sh_vou_release(struct file *file) | |
1201 | { | |
fd51625d | 1202 | struct sh_vou_device *vou_dev = video_drvdata(file); |
a81fb9b2 GL |
1203 | struct sh_vou_file *vou_file = file->private_data; |
1204 | ||
d899eddd | 1205 | dev_dbg(vou_dev->v4l2_dev.dev, "%s()\n", __func__); |
a81fb9b2 GL |
1206 | |
1207 | if (!atomic_dec_return(&vou_dev->use_count)) { | |
f135a8a2 | 1208 | mutex_lock(&vou_dev->fop_lock); |
a81fb9b2 GL |
1209 | /* Last close */ |
1210 | vou_dev->status = SH_VOU_IDLE; | |
1211 | sh_vou_reg_a_set(vou_dev, VOUER, 0, 0x101); | |
fd51625d | 1212 | pm_runtime_put(vou_dev->v4l2_dev.dev); |
f135a8a2 | 1213 | mutex_unlock(&vou_dev->fop_lock); |
a81fb9b2 GL |
1214 | } |
1215 | ||
1216 | file->private_data = NULL; | |
1217 | kfree(vou_file); | |
1218 | ||
1219 | return 0; | |
1220 | } | |
1221 | ||
1222 | static int sh_vou_mmap(struct file *file, struct vm_area_struct *vma) | |
1223 | { | |
fd51625d | 1224 | struct sh_vou_device *vou_dev = video_drvdata(file); |
a81fb9b2 | 1225 | struct sh_vou_file *vou_file = file->private_data; |
f135a8a2 | 1226 | int ret; |
a81fb9b2 | 1227 | |
d899eddd | 1228 | dev_dbg(vou_dev->v4l2_dev.dev, "%s()\n", __func__); |
a81fb9b2 | 1229 | |
f135a8a2 HV |
1230 | if (mutex_lock_interruptible(&vou_dev->fop_lock)) |
1231 | return -ERESTARTSYS; | |
1232 | ret = videobuf_mmap_mapper(&vou_file->vbq, vma); | |
1233 | mutex_unlock(&vou_dev->fop_lock); | |
1234 | return ret; | |
a81fb9b2 GL |
1235 | } |
1236 | ||
1237 | static unsigned int sh_vou_poll(struct file *file, poll_table *wait) | |
1238 | { | |
fd51625d | 1239 | struct sh_vou_device *vou_dev = video_drvdata(file); |
a81fb9b2 | 1240 | struct sh_vou_file *vou_file = file->private_data; |
f135a8a2 | 1241 | unsigned int res; |
a81fb9b2 | 1242 | |
d899eddd | 1243 | dev_dbg(vou_dev->v4l2_dev.dev, "%s()\n", __func__); |
a81fb9b2 | 1244 | |
f135a8a2 HV |
1245 | mutex_lock(&vou_dev->fop_lock); |
1246 | res = videobuf_poll_stream(file, &vou_file->vbq, wait); | |
1247 | mutex_unlock(&vou_dev->fop_lock); | |
1248 | return res; | |
a81fb9b2 GL |
1249 | } |
1250 | ||
1251 | static int sh_vou_g_chip_ident(struct file *file, void *fh, | |
1252 | struct v4l2_dbg_chip_ident *id) | |
1253 | { | |
fd51625d | 1254 | struct sh_vou_device *vou_dev = video_drvdata(file); |
a81fb9b2 GL |
1255 | |
1256 | return v4l2_device_call_until_err(&vou_dev->v4l2_dev, 0, core, g_chip_ident, id); | |
1257 | } | |
1258 | ||
1259 | #ifdef CONFIG_VIDEO_ADV_DEBUG | |
1260 | static int sh_vou_g_register(struct file *file, void *fh, | |
1261 | struct v4l2_dbg_register *reg) | |
1262 | { | |
fd51625d | 1263 | struct sh_vou_device *vou_dev = video_drvdata(file); |
a81fb9b2 GL |
1264 | |
1265 | return v4l2_device_call_until_err(&vou_dev->v4l2_dev, 0, core, g_register, reg); | |
1266 | } | |
1267 | ||
1268 | static int sh_vou_s_register(struct file *file, void *fh, | |
977ba3b1 | 1269 | const struct v4l2_dbg_register *reg) |
a81fb9b2 | 1270 | { |
fd51625d | 1271 | struct sh_vou_device *vou_dev = video_drvdata(file); |
a81fb9b2 GL |
1272 | |
1273 | return v4l2_device_call_until_err(&vou_dev->v4l2_dev, 0, core, s_register, reg); | |
1274 | } | |
1275 | #endif | |
1276 | ||
1277 | /* sh_vou display ioctl operations */ | |
1278 | static const struct v4l2_ioctl_ops sh_vou_ioctl_ops = { | |
1279 | .vidioc_querycap = sh_vou_querycap, | |
1280 | .vidioc_enum_fmt_vid_out = sh_vou_enum_fmt_vid_out, | |
1281 | .vidioc_g_fmt_vid_out = sh_vou_g_fmt_vid_out, | |
1282 | .vidioc_s_fmt_vid_out = sh_vou_s_fmt_vid_out, | |
1283 | .vidioc_try_fmt_vid_out = sh_vou_try_fmt_vid_out, | |
1284 | .vidioc_reqbufs = sh_vou_reqbufs, | |
1285 | .vidioc_querybuf = sh_vou_querybuf, | |
1286 | .vidioc_qbuf = sh_vou_qbuf, | |
1287 | .vidioc_dqbuf = sh_vou_dqbuf, | |
1288 | .vidioc_streamon = sh_vou_streamon, | |
1289 | .vidioc_streamoff = sh_vou_streamoff, | |
1290 | .vidioc_s_std = sh_vou_s_std, | |
1291 | .vidioc_g_std = sh_vou_g_std, | |
1292 | .vidioc_cropcap = sh_vou_cropcap, | |
1293 | .vidioc_g_crop = sh_vou_g_crop, | |
1294 | .vidioc_s_crop = sh_vou_s_crop, | |
1295 | .vidioc_g_chip_ident = sh_vou_g_chip_ident, | |
1296 | #ifdef CONFIG_VIDEO_ADV_DEBUG | |
1297 | .vidioc_g_register = sh_vou_g_register, | |
1298 | .vidioc_s_register = sh_vou_s_register, | |
1299 | #endif | |
1300 | }; | |
1301 | ||
1302 | static const struct v4l2_file_operations sh_vou_fops = { | |
1303 | .owner = THIS_MODULE, | |
1304 | .open = sh_vou_open, | |
1305 | .release = sh_vou_release, | |
69756693 | 1306 | .unlocked_ioctl = video_ioctl2, |
a81fb9b2 GL |
1307 | .mmap = sh_vou_mmap, |
1308 | .poll = sh_vou_poll, | |
1309 | }; | |
1310 | ||
1311 | static const struct video_device sh_vou_video_template = { | |
1312 | .name = "sh_vou", | |
1313 | .fops = &sh_vou_fops, | |
1314 | .ioctl_ops = &sh_vou_ioctl_ops, | |
1315 | .tvnorms = V4L2_STD_525_60, /* PAL only supported in 8-bit non-bt656 mode */ | |
1316 | .current_norm = V4L2_STD_NTSC_M, | |
954f340f | 1317 | .vfl_dir = VFL_DIR_TX, |
a81fb9b2 GL |
1318 | }; |
1319 | ||
4c62e976 | 1320 | static int sh_vou_probe(struct platform_device *pdev) |
a81fb9b2 GL |
1321 | { |
1322 | struct sh_vou_pdata *vou_pdata = pdev->dev.platform_data; | |
1323 | struct v4l2_rect *rect; | |
1324 | struct v4l2_pix_format *pix; | |
1325 | struct i2c_adapter *i2c_adap; | |
1326 | struct video_device *vdev; | |
1327 | struct sh_vou_device *vou_dev; | |
1328 | struct resource *reg_res, *region; | |
1329 | struct v4l2_subdev *subdev; | |
1330 | int irq, ret; | |
1331 | ||
1332 | reg_res = platform_get_resource(pdev, IORESOURCE_MEM, 0); | |
1333 | irq = platform_get_irq(pdev, 0); | |
1334 | ||
1335 | if (!vou_pdata || !reg_res || irq <= 0) { | |
1336 | dev_err(&pdev->dev, "Insufficient VOU platform information.\n"); | |
1337 | return -ENODEV; | |
1338 | } | |
1339 | ||
1340 | vou_dev = kzalloc(sizeof(*vou_dev), GFP_KERNEL); | |
1341 | if (!vou_dev) | |
1342 | return -ENOMEM; | |
1343 | ||
1344 | INIT_LIST_HEAD(&vou_dev->queue); | |
1345 | spin_lock_init(&vou_dev->lock); | |
69756693 | 1346 | mutex_init(&vou_dev->fop_lock); |
a81fb9b2 GL |
1347 | atomic_set(&vou_dev->use_count, 0); |
1348 | vou_dev->pdata = vou_pdata; | |
1349 | vou_dev->status = SH_VOU_IDLE; | |
1350 | ||
1351 | rect = &vou_dev->rect; | |
1352 | pix = &vou_dev->pix; | |
1353 | ||
1354 | /* Fill in defaults */ | |
1355 | vou_dev->std = sh_vou_video_template.current_norm; | |
1356 | rect->left = 0; | |
1357 | rect->top = 0; | |
1358 | rect->width = VOU_MAX_IMAGE_WIDTH; | |
765fe17c | 1359 | rect->height = 480; |
a81fb9b2 | 1360 | pix->width = VOU_MAX_IMAGE_WIDTH; |
765fe17c | 1361 | pix->height = 480; |
a81fb9b2 GL |
1362 | pix->pixelformat = V4L2_PIX_FMT_YVYU; |
1363 | pix->field = V4L2_FIELD_NONE; | |
1364 | pix->bytesperline = VOU_MAX_IMAGE_WIDTH * 2; | |
765fe17c | 1365 | pix->sizeimage = VOU_MAX_IMAGE_WIDTH * 2 * 480; |
a81fb9b2 GL |
1366 | pix->colorspace = V4L2_COLORSPACE_SMPTE170M; |
1367 | ||
1368 | region = request_mem_region(reg_res->start, resource_size(reg_res), | |
1369 | pdev->name); | |
1370 | if (!region) { | |
1371 | dev_err(&pdev->dev, "VOU region already claimed\n"); | |
1372 | ret = -EBUSY; | |
1373 | goto ereqmemreg; | |
1374 | } | |
1375 | ||
1376 | vou_dev->base = ioremap(reg_res->start, resource_size(reg_res)); | |
1377 | if (!vou_dev->base) { | |
1378 | ret = -ENOMEM; | |
1379 | goto emap; | |
1380 | } | |
1381 | ||
1382 | ret = request_irq(irq, sh_vou_isr, 0, "vou", vou_dev); | |
1383 | if (ret < 0) | |
1384 | goto ereqirq; | |
1385 | ||
1386 | ret = v4l2_device_register(&pdev->dev, &vou_dev->v4l2_dev); | |
1387 | if (ret < 0) { | |
1388 | dev_err(&pdev->dev, "Error registering v4l2 device\n"); | |
1389 | goto ev4l2devreg; | |
1390 | } | |
1391 | ||
1392 | /* Allocate memory for video device */ | |
1393 | vdev = video_device_alloc(); | |
1394 | if (vdev == NULL) { | |
1395 | ret = -ENOMEM; | |
1396 | goto evdevalloc; | |
1397 | } | |
1398 | ||
1399 | *vdev = sh_vou_video_template; | |
1400 | if (vou_pdata->bus_fmt == SH_VOU_BUS_8BIT) | |
1401 | vdev->tvnorms |= V4L2_STD_PAL; | |
1402 | vdev->v4l2_dev = &vou_dev->v4l2_dev; | |
1403 | vdev->release = video_device_release; | |
69756693 | 1404 | vdev->lock = &vou_dev->fop_lock; |
a81fb9b2 GL |
1405 | |
1406 | vou_dev->vdev = vdev; | |
1407 | video_set_drvdata(vdev, vou_dev); | |
1408 | ||
1409 | pm_runtime_enable(&pdev->dev); | |
1410 | pm_runtime_resume(&pdev->dev); | |
1411 | ||
1412 | i2c_adap = i2c_get_adapter(vou_pdata->i2c_adap); | |
1413 | if (!i2c_adap) { | |
1414 | ret = -ENODEV; | |
1415 | goto ei2cgadap; | |
1416 | } | |
1417 | ||
1418 | ret = sh_vou_hw_init(vou_dev); | |
1419 | if (ret < 0) | |
1420 | goto ereset; | |
1421 | ||
1422 | subdev = v4l2_i2c_new_subdev_board(&vou_dev->v4l2_dev, i2c_adap, | |
9a1f8b34 | 1423 | vou_pdata->board_info, NULL); |
a81fb9b2 GL |
1424 | if (!subdev) { |
1425 | ret = -ENOMEM; | |
1426 | goto ei2cnd; | |
1427 | } | |
1428 | ||
1429 | ret = video_register_device(vdev, VFL_TYPE_GRABBER, -1); | |
1430 | if (ret < 0) | |
1431 | goto evregdev; | |
1432 | ||
1433 | return 0; | |
1434 | ||
1435 | evregdev: | |
1436 | ei2cnd: | |
1437 | ereset: | |
1438 | i2c_put_adapter(i2c_adap); | |
1439 | ei2cgadap: | |
1440 | video_device_release(vdev); | |
1441 | pm_runtime_disable(&pdev->dev); | |
1442 | evdevalloc: | |
1443 | v4l2_device_unregister(&vou_dev->v4l2_dev); | |
1444 | ev4l2devreg: | |
1445 | free_irq(irq, vou_dev); | |
1446 | ereqirq: | |
1447 | iounmap(vou_dev->base); | |
1448 | emap: | |
1449 | release_mem_region(reg_res->start, resource_size(reg_res)); | |
1450 | ereqmemreg: | |
1451 | kfree(vou_dev); | |
1452 | return ret; | |
1453 | } | |
1454 | ||
4c62e976 | 1455 | static int sh_vou_remove(struct platform_device *pdev) |
a81fb9b2 GL |
1456 | { |
1457 | int irq = platform_get_irq(pdev, 0); | |
1458 | struct v4l2_device *v4l2_dev = platform_get_drvdata(pdev); | |
1459 | struct sh_vou_device *vou_dev = container_of(v4l2_dev, | |
1460 | struct sh_vou_device, v4l2_dev); | |
1461 | struct v4l2_subdev *sd = list_entry(v4l2_dev->subdevs.next, | |
1462 | struct v4l2_subdev, list); | |
1463 | struct i2c_client *client = v4l2_get_subdevdata(sd); | |
1464 | struct resource *reg_res; | |
1465 | ||
1466 | if (irq > 0) | |
1467 | free_irq(irq, vou_dev); | |
1468 | pm_runtime_disable(&pdev->dev); | |
1469 | video_unregister_device(vou_dev->vdev); | |
1470 | i2c_put_adapter(client->adapter); | |
1471 | v4l2_device_unregister(&vou_dev->v4l2_dev); | |
1472 | iounmap(vou_dev->base); | |
1473 | reg_res = platform_get_resource(pdev, IORESOURCE_MEM, 0); | |
1474 | if (reg_res) | |
1475 | release_mem_region(reg_res->start, resource_size(reg_res)); | |
1476 | kfree(vou_dev); | |
1477 | return 0; | |
1478 | } | |
1479 | ||
1480 | static struct platform_driver __refdata sh_vou = { | |
4c62e976 | 1481 | .remove = sh_vou_remove, |
a81fb9b2 GL |
1482 | .driver = { |
1483 | .name = "sh-vou", | |
1484 | .owner = THIS_MODULE, | |
1485 | }, | |
1486 | }; | |
1487 | ||
b3fd87bc | 1488 | module_platform_driver_probe(sh_vou, sh_vou_probe); |
a81fb9b2 GL |
1489 | |
1490 | MODULE_DESCRIPTION("SuperH VOU driver"); | |
1491 | MODULE_AUTHOR("Guennadi Liakhovetski <g.liakhovetski@gmx.de>"); | |
1492 | MODULE_LICENSE("GPL v2"); | |
64dc3c1a | 1493 | MODULE_VERSION("0.1.0"); |
a81fb9b2 | 1494 | MODULE_ALIAS("platform:sh-vou"); |