diff options
author | Guennadi Liakhovetski <g.liakhovetski@gmx.de> | 2010-03-17 10:21:13 -0400 |
---|---|---|
committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2010-05-19 11:58:01 -0400 |
commit | a81fb9b223508f5773d8d7e226b1574d1b068642 (patch) | |
tree | 3af26951f271365b3fe06e8c27827c49ec7dfc24 /drivers/media/video/sh_vou.c | |
parent | f35f1bb8fc1e56646a3dab0ecd12e23bca6323c4 (diff) |
V4L/DVB: V4L: SuperH Video Output Unit (VOU) driver
A number of SuperH Mobile SoCs, including sh7724, include a Video Output Unit.
This patch adds a video (V4L2) output driver for it. The driver uses v4l2-subdev
and mediabus APIs to interface to TV encoders.
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Acked-by: Paul Mundt <lethal@linux-sh.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media/video/sh_vou.c')
-rw-r--r-- | drivers/media/video/sh_vou.c | 1476 |
1 files changed, 1476 insertions, 0 deletions
diff --git a/drivers/media/video/sh_vou.c b/drivers/media/video/sh_vou.c new file mode 100644 index 000000000000..f5b892a2a8ee --- /dev/null +++ b/drivers/media/video/sh_vou.c | |||
@@ -0,0 +1,1476 @@ | |||
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> | ||
21 | #include <linux/version.h> | ||
22 | #include <linux/videodev2.h> | ||
23 | |||
24 | #include <media/sh_vou.h> | ||
25 | #include <media/v4l2-common.h> | ||
26 | #include <media/v4l2-device.h> | ||
27 | #include <media/v4l2-ioctl.h> | ||
28 | #include <media/v4l2-mediabus.h> | ||
29 | #include <media/videobuf-dma-contig.h> | ||
30 | |||
31 | /* Mirror addresses are not available for all registers */ | ||
32 | #define VOUER 0 | ||
33 | #define VOUCR 4 | ||
34 | #define VOUSTR 8 | ||
35 | #define VOUVCR 0xc | ||
36 | #define VOUISR 0x10 | ||
37 | #define VOUBCR 0x14 | ||
38 | #define VOUDPR 0x18 | ||
39 | #define VOUDSR 0x1c | ||
40 | #define VOUVPR 0x20 | ||
41 | #define VOUIR 0x24 | ||
42 | #define VOUSRR 0x28 | ||
43 | #define VOUMSR 0x2c | ||
44 | #define VOUHIR 0x30 | ||
45 | #define VOUDFR 0x34 | ||
46 | #define VOUAD1R 0x38 | ||
47 | #define VOUAD2R 0x3c | ||
48 | #define VOUAIR 0x40 | ||
49 | #define VOUSWR 0x44 | ||
50 | #define VOURCR 0x48 | ||
51 | #define VOURPR 0x50 | ||
52 | |||
53 | enum sh_vou_status { | ||
54 | SH_VOU_IDLE, | ||
55 | SH_VOU_INITIALISING, | ||
56 | SH_VOU_RUNNING, | ||
57 | }; | ||
58 | |||
59 | #define VOU_MAX_IMAGE_WIDTH 720 | ||
60 | #define VOU_MAX_IMAGE_HEIGHT 480 | ||
61 | |||
62 | struct sh_vou_device { | ||
63 | struct v4l2_device v4l2_dev; | ||
64 | struct video_device *vdev; | ||
65 | atomic_t use_count; | ||
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; | ||
77 | }; | ||
78 | |||
79 | struct sh_vou_file { | ||
80 | struct videobuf_queue vbq; | ||
81 | }; | ||
82 | |||
83 | /* Register access routines for sides A, B and mirror addresses */ | ||
84 | static void sh_vou_reg_a_write(struct sh_vou_device *vou_dev, unsigned int reg, | ||
85 | u32 value) | ||
86 | { | ||
87 | __raw_writel(value, vou_dev->base + reg); | ||
88 | } | ||
89 | |||
90 | static void sh_vou_reg_ab_write(struct sh_vou_device *vou_dev, unsigned int reg, | ||
91 | u32 value) | ||
92 | { | ||
93 | __raw_writel(value, vou_dev->base + reg); | ||
94 | __raw_writel(value, vou_dev->base + reg + 0x1000); | ||
95 | } | ||
96 | |||
97 | static void sh_vou_reg_m_write(struct sh_vou_device *vou_dev, unsigned int reg, | ||
98 | u32 value) | ||
99 | { | ||
100 | __raw_writel(value, vou_dev->base + reg + 0x2000); | ||
101 | } | ||
102 | |||
103 | static u32 sh_vou_reg_a_read(struct sh_vou_device *vou_dev, unsigned int reg) | ||
104 | { | ||
105 | return __raw_readl(vou_dev->base + reg); | ||
106 | } | ||
107 | |||
108 | static void sh_vou_reg_a_set(struct sh_vou_device *vou_dev, unsigned int reg, | ||
109 | u32 value, u32 mask) | ||
110 | { | ||
111 | u32 old = __raw_readl(vou_dev->base + reg); | ||
112 | |||
113 | value = (value & mask) | (old & ~mask); | ||
114 | __raw_writel(value, vou_dev->base + reg); | ||
115 | } | ||
116 | |||
117 | static void sh_vou_reg_b_set(struct sh_vou_device *vou_dev, unsigned int reg, | ||
118 | u32 value, u32 mask) | ||
119 | { | ||
120 | sh_vou_reg_a_set(vou_dev, reg + 0x1000, value, mask); | ||
121 | } | ||
122 | |||
123 | static void sh_vou_reg_ab_set(struct sh_vou_device *vou_dev, unsigned int reg, | ||
124 | u32 value, u32 mask) | ||
125 | { | ||
126 | sh_vou_reg_a_set(vou_dev, reg, value, mask); | ||
127 | sh_vou_reg_b_set(vou_dev, reg, value, mask); | ||
128 | } | ||
129 | |||
130 | struct sh_vou_fmt { | ||
131 | u32 pfmt; | ||
132 | char *desc; | ||
133 | unsigned char bpp; | ||
134 | unsigned char rgb; | ||
135 | unsigned char yf; | ||
136 | unsigned char pkf; | ||
137 | }; | ||
138 | |||
139 | /* Further pixel formats can be added */ | ||
140 | static struct sh_vou_fmt vou_fmt[] = { | ||
141 | { | ||
142 | .pfmt = V4L2_PIX_FMT_NV12, | ||
143 | .bpp = 12, | ||
144 | .desc = "YVU420 planar", | ||
145 | .yf = 0, | ||
146 | .rgb = 0, | ||
147 | }, | ||
148 | { | ||
149 | .pfmt = V4L2_PIX_FMT_NV16, | ||
150 | .bpp = 16, | ||
151 | .desc = "YVYU planar", | ||
152 | .yf = 1, | ||
153 | .rgb = 0, | ||
154 | }, | ||
155 | { | ||
156 | .pfmt = V4L2_PIX_FMT_RGB24, | ||
157 | .bpp = 24, | ||
158 | .desc = "RGB24", | ||
159 | .pkf = 2, | ||
160 | .rgb = 1, | ||
161 | }, | ||
162 | { | ||
163 | .pfmt = V4L2_PIX_FMT_RGB565, | ||
164 | .bpp = 16, | ||
165 | .desc = "RGB565", | ||
166 | .pkf = 3, | ||
167 | .rgb = 1, | ||
168 | }, | ||
169 | { | ||
170 | .pfmt = V4L2_PIX_FMT_RGB565X, | ||
171 | .bpp = 16, | ||
172 | .desc = "RGB565 byteswapped", | ||
173 | .pkf = 3, | ||
174 | .rgb = 1, | ||
175 | }, | ||
176 | }; | ||
177 | |||
178 | static void sh_vou_schedule_next(struct sh_vou_device *vou_dev, | ||
179 | struct videobuf_buffer *vb) | ||
180 | { | ||
181 | dma_addr_t addr1, addr2; | ||
182 | |||
183 | addr1 = videobuf_to_dma_contig(vb); | ||
184 | switch (vou_dev->pix.pixelformat) { | ||
185 | case V4L2_PIX_FMT_NV12: | ||
186 | case V4L2_PIX_FMT_NV16: | ||
187 | addr2 = addr1 + vou_dev->pix.width * vou_dev->pix.height; | ||
188 | break; | ||
189 | default: | ||
190 | addr2 = 0; | ||
191 | } | ||
192 | |||
193 | sh_vou_reg_m_write(vou_dev, VOUAD1R, addr1); | ||
194 | sh_vou_reg_m_write(vou_dev, VOUAD2R, addr2); | ||
195 | } | ||
196 | |||
197 | static void sh_vou_stream_start(struct sh_vou_device *vou_dev, | ||
198 | struct videobuf_buffer *vb) | ||
199 | { | ||
200 | unsigned int row_coeff; | ||
201 | #ifdef __LITTLE_ENDIAN | ||
202 | u32 dataswap = 7; | ||
203 | #else | ||
204 | u32 dataswap = 0; | ||
205 | #endif | ||
206 | |||
207 | switch (vou_dev->pix.pixelformat) { | ||
208 | case V4L2_PIX_FMT_NV12: | ||
209 | case V4L2_PIX_FMT_NV16: | ||
210 | row_coeff = 1; | ||
211 | break; | ||
212 | case V4L2_PIX_FMT_RGB565: | ||
213 | dataswap ^= 1; | ||
214 | case V4L2_PIX_FMT_RGB565X: | ||
215 | row_coeff = 2; | ||
216 | break; | ||
217 | case V4L2_PIX_FMT_RGB24: | ||
218 | row_coeff = 3; | ||
219 | break; | ||
220 | } | ||
221 | |||
222 | sh_vou_reg_a_write(vou_dev, VOUSWR, dataswap); | ||
223 | sh_vou_reg_ab_write(vou_dev, VOUAIR, vou_dev->pix.width * row_coeff); | ||
224 | sh_vou_schedule_next(vou_dev, vb); | ||
225 | } | ||
226 | |||
227 | static void free_buffer(struct videobuf_queue *vq, struct videobuf_buffer *vb) | ||
228 | { | ||
229 | BUG_ON(in_interrupt()); | ||
230 | |||
231 | /* Wait until this buffer is no longer in STATE_QUEUED or STATE_ACTIVE */ | ||
232 | videobuf_waiton(vb, 0, 0); | ||
233 | videobuf_dma_contig_free(vq, vb); | ||
234 | vb->state = VIDEOBUF_NEEDS_INIT; | ||
235 | } | ||
236 | |||
237 | /* Locking: caller holds vq->vb_lock mutex */ | ||
238 | static int sh_vou_buf_setup(struct videobuf_queue *vq, unsigned int *count, | ||
239 | unsigned int *size) | ||
240 | { | ||
241 | struct video_device *vdev = vq->priv_data; | ||
242 | struct sh_vou_device *vou_dev = video_get_drvdata(vdev); | ||
243 | |||
244 | *size = vou_fmt[vou_dev->pix_idx].bpp * vou_dev->pix.width * | ||
245 | vou_dev->pix.height / 8; | ||
246 | |||
247 | if (*count < 2) | ||
248 | *count = 2; | ||
249 | |||
250 | /* Taking into account maximum frame size, *count will stay >= 2 */ | ||
251 | if (PAGE_ALIGN(*size) * *count > 4 * 1024 * 1024) | ||
252 | *count = 4 * 1024 * 1024 / PAGE_ALIGN(*size); | ||
253 | |||
254 | dev_dbg(vq->dev, "%s(): count=%d, size=%d\n", __func__, *count, *size); | ||
255 | |||
256 | return 0; | ||
257 | } | ||
258 | |||
259 | /* Locking: caller holds vq->vb_lock mutex */ | ||
260 | static int sh_vou_buf_prepare(struct videobuf_queue *vq, | ||
261 | struct videobuf_buffer *vb, | ||
262 | enum v4l2_field field) | ||
263 | { | ||
264 | struct video_device *vdev = vq->priv_data; | ||
265 | struct sh_vou_device *vou_dev = video_get_drvdata(vdev); | ||
266 | struct v4l2_pix_format *pix = &vou_dev->pix; | ||
267 | int bytes_per_line = vou_fmt[vou_dev->pix_idx].bpp * pix->width / 8; | ||
268 | int ret; | ||
269 | |||
270 | dev_dbg(vq->dev, "%s()\n", __func__); | ||
271 | |||
272 | if (vb->width != pix->width || | ||
273 | vb->height != pix->height || | ||
274 | vb->field != pix->field) { | ||
275 | vb->width = pix->width; | ||
276 | vb->height = pix->height; | ||
277 | vb->field = field; | ||
278 | if (vb->state != VIDEOBUF_NEEDS_INIT) | ||
279 | free_buffer(vq, vb); | ||
280 | } | ||
281 | |||
282 | vb->size = vb->height * bytes_per_line; | ||
283 | if (vb->baddr && vb->bsize < vb->size) { | ||
284 | /* User buffer too small */ | ||
285 | dev_warn(vq->dev, "User buffer too small: [%u] @ %lx\n", | ||
286 | vb->bsize, vb->baddr); | ||
287 | return -EINVAL; | ||
288 | } | ||
289 | |||
290 | if (vb->state == VIDEOBUF_NEEDS_INIT) { | ||
291 | ret = videobuf_iolock(vq, vb, NULL); | ||
292 | if (ret < 0) { | ||
293 | dev_warn(vq->dev, "IOLOCK buf-type %d: %d\n", | ||
294 | vb->memory, ret); | ||
295 | return ret; | ||
296 | } | ||
297 | vb->state = VIDEOBUF_PREPARED; | ||
298 | } | ||
299 | |||
300 | dev_dbg(vq->dev, | ||
301 | "%s(): fmt #%d, %u bytes per line, phys 0x%x, type %d, state %d\n", | ||
302 | __func__, vou_dev->pix_idx, bytes_per_line, | ||
303 | videobuf_to_dma_contig(vb), vb->memory, vb->state); | ||
304 | |||
305 | return 0; | ||
306 | } | ||
307 | |||
308 | /* Locking: caller holds vq->vb_lock mutex and vq->irqlock spinlock */ | ||
309 | static void sh_vou_buf_queue(struct videobuf_queue *vq, | ||
310 | struct videobuf_buffer *vb) | ||
311 | { | ||
312 | struct video_device *vdev = vq->priv_data; | ||
313 | struct sh_vou_device *vou_dev = video_get_drvdata(vdev); | ||
314 | |||
315 | dev_dbg(vq->dev, "%s()\n", __func__); | ||
316 | |||
317 | vb->state = VIDEOBUF_QUEUED; | ||
318 | list_add_tail(&vb->queue, &vou_dev->queue); | ||
319 | |||
320 | if (vou_dev->status == SH_VOU_RUNNING) { | ||
321 | return; | ||
322 | } else if (!vou_dev->active) { | ||
323 | vou_dev->active = vb; | ||
324 | /* Start from side A: we use mirror addresses, so, set B */ | ||
325 | sh_vou_reg_a_write(vou_dev, VOURPR, 1); | ||
326 | dev_dbg(vq->dev, "%s: first buffer status 0x%x\n", __func__, | ||
327 | sh_vou_reg_a_read(vou_dev, VOUSTR)); | ||
328 | sh_vou_schedule_next(vou_dev, vb); | ||
329 | /* Only activate VOU after the second buffer */ | ||
330 | } else if (vou_dev->active->queue.next == &vb->queue) { | ||
331 | /* Second buffer - initialise register side B */ | ||
332 | sh_vou_reg_a_write(vou_dev, VOURPR, 0); | ||
333 | sh_vou_stream_start(vou_dev, vb); | ||
334 | |||
335 | /* Register side switching with frame VSYNC */ | ||
336 | sh_vou_reg_a_write(vou_dev, VOURCR, 5); | ||
337 | dev_dbg(vq->dev, "%s: second buffer status 0x%x\n", __func__, | ||
338 | sh_vou_reg_a_read(vou_dev, VOUSTR)); | ||
339 | |||
340 | /* Enable End-of-Frame (VSYNC) interrupts */ | ||
341 | sh_vou_reg_a_write(vou_dev, VOUIR, 0x10004); | ||
342 | /* Two buffers on the queue - activate the hardware */ | ||
343 | |||
344 | vou_dev->status = SH_VOU_RUNNING; | ||
345 | sh_vou_reg_a_write(vou_dev, VOUER, 0x107); | ||
346 | } | ||
347 | } | ||
348 | |||
349 | static void sh_vou_buf_release(struct videobuf_queue *vq, | ||
350 | struct videobuf_buffer *vb) | ||
351 | { | ||
352 | struct video_device *vdev = vq->priv_data; | ||
353 | struct sh_vou_device *vou_dev = video_get_drvdata(vdev); | ||
354 | unsigned long flags; | ||
355 | |||
356 | dev_dbg(vq->dev, "%s()\n", __func__); | ||
357 | |||
358 | spin_lock_irqsave(&vou_dev->lock, flags); | ||
359 | |||
360 | if (vou_dev->active == vb) { | ||
361 | /* disable output */ | ||
362 | sh_vou_reg_a_set(vou_dev, VOUER, 0, 1); | ||
363 | /* ...but the current frame will complete */ | ||
364 | sh_vou_reg_a_set(vou_dev, VOUIR, 0, 0x30000); | ||
365 | vou_dev->active = NULL; | ||
366 | } | ||
367 | |||
368 | if ((vb->state == VIDEOBUF_ACTIVE || vb->state == VIDEOBUF_QUEUED)) { | ||
369 | vb->state = VIDEOBUF_ERROR; | ||
370 | list_del(&vb->queue); | ||
371 | } | ||
372 | |||
373 | spin_unlock_irqrestore(&vou_dev->lock, flags); | ||
374 | |||
375 | free_buffer(vq, vb); | ||
376 | } | ||
377 | |||
378 | static struct videobuf_queue_ops sh_vou_video_qops = { | ||
379 | .buf_setup = sh_vou_buf_setup, | ||
380 | .buf_prepare = sh_vou_buf_prepare, | ||
381 | .buf_queue = sh_vou_buf_queue, | ||
382 | .buf_release = sh_vou_buf_release, | ||
383 | }; | ||
384 | |||
385 | /* Video IOCTLs */ | ||
386 | static int sh_vou_querycap(struct file *file, void *priv, | ||
387 | struct v4l2_capability *cap) | ||
388 | { | ||
389 | struct sh_vou_file *vou_file = priv; | ||
390 | |||
391 | dev_dbg(vou_file->vbq.dev, "%s()\n", __func__); | ||
392 | |||
393 | strlcpy(cap->card, "SuperH VOU", sizeof(cap->card)); | ||
394 | cap->version = KERNEL_VERSION(0, 1, 0); | ||
395 | cap->capabilities = V4L2_CAP_VIDEO_OUTPUT | V4L2_CAP_STREAMING; | ||
396 | return 0; | ||
397 | } | ||
398 | |||
399 | /* Enumerate formats, that the device can accept from the user */ | ||
400 | static int sh_vou_enum_fmt_vid_out(struct file *file, void *priv, | ||
401 | struct v4l2_fmtdesc *fmt) | ||
402 | { | ||
403 | struct sh_vou_file *vou_file = priv; | ||
404 | |||
405 | if (fmt->index >= ARRAY_SIZE(vou_fmt)) | ||
406 | return -EINVAL; | ||
407 | |||
408 | dev_dbg(vou_file->vbq.dev, "%s()\n", __func__); | ||
409 | |||
410 | fmt->type = V4L2_BUF_TYPE_VIDEO_OUTPUT; | ||
411 | strlcpy(fmt->description, vou_fmt[fmt->index].desc, | ||
412 | sizeof(fmt->description)); | ||
413 | fmt->pixelformat = vou_fmt[fmt->index].pfmt; | ||
414 | |||
415 | return 0; | ||
416 | } | ||
417 | |||
418 | static int sh_vou_g_fmt_vid_out(struct file *file, void *priv, | ||
419 | struct v4l2_format *fmt) | ||
420 | { | ||
421 | struct video_device *vdev = video_devdata(file); | ||
422 | struct sh_vou_device *vou_dev = video_get_drvdata(vdev); | ||
423 | |||
424 | dev_dbg(vou_dev->v4l2_dev.dev, "%s()\n", __func__); | ||
425 | |||
426 | fmt->type = V4L2_BUF_TYPE_VIDEO_OUTPUT; | ||
427 | fmt->fmt.pix = vou_dev->pix; | ||
428 | |||
429 | return 0; | ||
430 | } | ||
431 | |||
432 | static const unsigned char vou_scale_h_num[] = {1, 9, 2, 9, 4}; | ||
433 | static const unsigned char vou_scale_h_den[] = {1, 8, 1, 4, 1}; | ||
434 | static const unsigned char vou_scale_h_fld[] = {0, 2, 1, 3}; | ||
435 | static const unsigned char vou_scale_v_num[] = {1, 2, 4}; | ||
436 | static const unsigned char vou_scale_v_den[] = {1, 1, 1}; | ||
437 | static const unsigned char vou_scale_v_fld[] = {0, 1}; | ||
438 | |||
439 | static void sh_vou_configure_geometry(struct sh_vou_device *vou_dev, | ||
440 | int pix_idx, int w_idx, int h_idx) | ||
441 | { | ||
442 | struct sh_vou_fmt *fmt = vou_fmt + pix_idx; | ||
443 | unsigned int black_left, black_top, width_max, height_max, | ||
444 | frame_in_height, frame_out_height, frame_out_top; | ||
445 | struct v4l2_rect *rect = &vou_dev->rect; | ||
446 | struct v4l2_pix_format *pix = &vou_dev->pix; | ||
447 | u32 vouvcr = 0, dsr_h, dsr_v; | ||
448 | |||
449 | if (vou_dev->std & V4L2_STD_525_60) { | ||
450 | width_max = 858; | ||
451 | height_max = 262; | ||
452 | } else { | ||
453 | width_max = 864; | ||
454 | height_max = 312; | ||
455 | } | ||
456 | |||
457 | frame_in_height = pix->height / 2; | ||
458 | frame_out_height = rect->height / 2; | ||
459 | frame_out_top = rect->top / 2; | ||
460 | |||
461 | /* | ||
462 | * Cropping scheme: max useful image is 720x480, and the total video | ||
463 | * area is 858x525 (NTSC) or 864x625 (PAL). AK8813 / 8814 starts | ||
464 | * sampling data beginning with fixed 276th (NTSC) / 288th (PAL) clock, | ||
465 | * of which the first 33 / 25 clocks HSYNC must be held active. This | ||
466 | * has to be configured in CR[HW]. 1 pixel equals 2 clock periods. | ||
467 | * This gives CR[HW] = 16 / 12, VPR[HVP] = 138 / 144, which gives | ||
468 | * exactly 858 - 138 = 864 - 144 = 720! We call the out-of-display area, | ||
469 | * beyond DSR, specified on the left and top by the VPR register "black | ||
470 | * pixels" and out-of-image area (DPR) "background pixels." We fix VPR | ||
471 | * at 138 / 144 : 20, because that's the HSYNC timing, that our first | ||
472 | * client requires, and that's exactly what leaves us 720 pixels for the | ||
473 | * image; we leave VPR[VVP] at default 20 for now, because the client | ||
474 | * doesn't seem to have any special requirements for it. Otherwise we | ||
475 | * could also set it to max - 240 = 22 / 72. Thus VPR depends only on | ||
476 | * the selected standard, and DPR and DSR are selected according to | ||
477 | * cropping. Q: how does the client detect the first valid line? Does | ||
478 | * HSYNC stay inactive during invalid (black) lines? | ||
479 | */ | ||
480 | black_left = width_max - VOU_MAX_IMAGE_WIDTH; | ||
481 | black_top = 20; | ||
482 | |||
483 | dsr_h = rect->width + rect->left; | ||
484 | dsr_v = frame_out_height + frame_out_top; | ||
485 | |||
486 | dev_dbg(vou_dev->v4l2_dev.dev, | ||
487 | "image %ux%u, black %u:%u, offset %u:%u, display %ux%u\n", | ||
488 | pix->width, frame_in_height, black_left, black_top, | ||
489 | rect->left, frame_out_top, dsr_h, dsr_v); | ||
490 | |||
491 | /* VOUISR height - half of a frame height in frame mode */ | ||
492 | sh_vou_reg_ab_write(vou_dev, VOUISR, (pix->width << 16) | frame_in_height); | ||
493 | sh_vou_reg_ab_write(vou_dev, VOUVPR, (black_left << 16) | black_top); | ||
494 | sh_vou_reg_ab_write(vou_dev, VOUDPR, (rect->left << 16) | frame_out_top); | ||
495 | sh_vou_reg_ab_write(vou_dev, VOUDSR, (dsr_h << 16) | dsr_v); | ||
496 | |||
497 | /* | ||
498 | * if necessary, we could set VOUHIR to | ||
499 | * max(black_left + dsr_h, width_max) here | ||
500 | */ | ||
501 | |||
502 | if (w_idx) | ||
503 | vouvcr |= (1 << 15) | (vou_scale_h_fld[w_idx - 1] << 4); | ||
504 | if (h_idx) | ||
505 | vouvcr |= (1 << 14) | vou_scale_v_fld[h_idx - 1]; | ||
506 | |||
507 | dev_dbg(vou_dev->v4l2_dev.dev, "%s: scaling 0x%x\n", fmt->desc, vouvcr); | ||
508 | |||
509 | /* To produce a colour bar for testing set bit 23 of VOUVCR */ | ||
510 | sh_vou_reg_ab_write(vou_dev, VOUVCR, vouvcr); | ||
511 | sh_vou_reg_ab_write(vou_dev, VOUDFR, | ||
512 | fmt->pkf | (fmt->yf << 8) | (fmt->rgb << 16)); | ||
513 | } | ||
514 | |||
515 | struct sh_vou_geometry { | ||
516 | struct v4l2_rect output; | ||
517 | unsigned int in_width; | ||
518 | unsigned int in_height; | ||
519 | int scale_idx_h; | ||
520 | int scale_idx_v; | ||
521 | }; | ||
522 | |||
523 | /* | ||
524 | * Find input geometry, that we can use to produce output, closest to the | ||
525 | * requested rectangle, using VOU scaling | ||
526 | */ | ||
527 | static void vou_adjust_input(struct sh_vou_geometry *geo, v4l2_std_id std) | ||
528 | { | ||
529 | /* The compiler cannot know, that best and idx will indeed be set */ | ||
530 | unsigned int best_err = UINT_MAX, best = 0, width_max, height_max; | ||
531 | int i, idx = 0; | ||
532 | |||
533 | if (std & V4L2_STD_525_60) { | ||
534 | width_max = 858; | ||
535 | height_max = 262; | ||
536 | } else { | ||
537 | width_max = 864; | ||
538 | height_max = 312; | ||
539 | } | ||
540 | |||
541 | /* Image width must be a multiple of 4 */ | ||
542 | v4l_bound_align_image(&geo->in_width, 0, VOU_MAX_IMAGE_WIDTH, 2, | ||
543 | &geo->in_height, 0, VOU_MAX_IMAGE_HEIGHT, 1, 0); | ||
544 | |||
545 | /* Select scales to come as close as possible to the output image */ | ||
546 | for (i = ARRAY_SIZE(vou_scale_h_num) - 1; i >= 0; i--) { | ||
547 | unsigned int err; | ||
548 | unsigned int found = geo->output.width * vou_scale_h_den[i] / | ||
549 | vou_scale_h_num[i]; | ||
550 | |||
551 | if (found > VOU_MAX_IMAGE_WIDTH) | ||
552 | /* scales increase */ | ||
553 | break; | ||
554 | |||
555 | err = abs(found - geo->in_width); | ||
556 | if (err < best_err) { | ||
557 | best_err = err; | ||
558 | idx = i; | ||
559 | best = found; | ||
560 | } | ||
561 | if (!err) | ||
562 | break; | ||
563 | } | ||
564 | |||
565 | geo->in_width = best; | ||
566 | geo->scale_idx_h = idx; | ||
567 | |||
568 | best_err = UINT_MAX; | ||
569 | |||
570 | /* This loop can be replaced with one division */ | ||
571 | for (i = ARRAY_SIZE(vou_scale_v_num) - 1; i >= 0; i--) { | ||
572 | unsigned int err; | ||
573 | unsigned int found = geo->output.height * vou_scale_v_den[i] / | ||
574 | vou_scale_v_num[i]; | ||
575 | |||
576 | if (found > VOU_MAX_IMAGE_HEIGHT) | ||
577 | /* scales increase */ | ||
578 | break; | ||
579 | |||
580 | err = abs(found - geo->in_height); | ||
581 | if (err < best_err) { | ||
582 | best_err = err; | ||
583 | idx = i; | ||
584 | best = found; | ||
585 | } | ||
586 | if (!err) | ||
587 | break; | ||
588 | } | ||
589 | |||
590 | geo->in_height = best; | ||
591 | geo->scale_idx_v = idx; | ||
592 | } | ||
593 | |||
594 | /* | ||
595 | * Find output geometry, that we can produce, using VOU scaling, closest to | ||
596 | * the requested rectangle | ||
597 | */ | ||
598 | static void vou_adjust_output(struct sh_vou_geometry *geo, v4l2_std_id std) | ||
599 | { | ||
600 | unsigned int best_err = UINT_MAX, best, width_max, height_max; | ||
601 | int i, idx; | ||
602 | |||
603 | if (std & V4L2_STD_525_60) { | ||
604 | width_max = 858; | ||
605 | height_max = 262 * 2; | ||
606 | } else { | ||
607 | width_max = 864; | ||
608 | height_max = 312 * 2; | ||
609 | } | ||
610 | |||
611 | /* Select scales to come as close as possible to the output image */ | ||
612 | for (i = 0; i < ARRAY_SIZE(vou_scale_h_num); i++) { | ||
613 | unsigned int err; | ||
614 | unsigned int found = geo->in_width * vou_scale_h_num[i] / | ||
615 | vou_scale_h_den[i]; | ||
616 | |||
617 | if (found > VOU_MAX_IMAGE_WIDTH) | ||
618 | /* scales increase */ | ||
619 | break; | ||
620 | |||
621 | err = abs(found - geo->output.width); | ||
622 | if (err < best_err) { | ||
623 | best_err = err; | ||
624 | idx = i; | ||
625 | best = found; | ||
626 | } | ||
627 | if (!err) | ||
628 | break; | ||
629 | } | ||
630 | |||
631 | geo->output.width = best; | ||
632 | geo->scale_idx_h = idx; | ||
633 | if (geo->output.left + best > width_max) | ||
634 | geo->output.left = width_max - best; | ||
635 | |||
636 | pr_debug("%s(): W %u * %u/%u = %u\n", __func__, geo->in_width, | ||
637 | vou_scale_h_num[idx], vou_scale_h_den[idx], best); | ||
638 | |||
639 | best_err = UINT_MAX; | ||
640 | |||
641 | /* This loop can be replaced with one division */ | ||
642 | for (i = 0; i < ARRAY_SIZE(vou_scale_v_num); i++) { | ||
643 | unsigned int err; | ||
644 | unsigned int found = geo->in_height * vou_scale_v_num[i] / | ||
645 | vou_scale_v_den[i]; | ||
646 | |||
647 | if (found > VOU_MAX_IMAGE_HEIGHT) | ||
648 | /* scales increase */ | ||
649 | break; | ||
650 | |||
651 | err = abs(found - geo->output.height); | ||
652 | if (err < best_err) { | ||
653 | best_err = err; | ||
654 | idx = i; | ||
655 | best = found; | ||
656 | } | ||
657 | if (!err) | ||
658 | break; | ||
659 | } | ||
660 | |||
661 | geo->output.height = best; | ||
662 | geo->scale_idx_v = idx; | ||
663 | if (geo->output.top + best > height_max) | ||
664 | geo->output.top = height_max - best; | ||
665 | |||
666 | pr_debug("%s(): H %u * %u/%u = %u\n", __func__, geo->in_height, | ||
667 | vou_scale_v_num[idx], vou_scale_v_den[idx], best); | ||
668 | } | ||
669 | |||
670 | static int sh_vou_s_fmt_vid_out(struct file *file, void *priv, | ||
671 | struct v4l2_format *fmt) | ||
672 | { | ||
673 | struct video_device *vdev = video_devdata(file); | ||
674 | struct sh_vou_device *vou_dev = video_get_drvdata(vdev); | ||
675 | struct v4l2_pix_format *pix = &fmt->fmt.pix; | ||
676 | int pix_idx; | ||
677 | struct sh_vou_geometry geo; | ||
678 | struct v4l2_mbus_framefmt mbfmt = { | ||
679 | /* Revisit: is this the correct code? */ | ||
680 | .code = V4L2_MBUS_FMT_YUYV8_2X8_LE, | ||
681 | .field = V4L2_FIELD_INTERLACED, | ||
682 | .colorspace = V4L2_COLORSPACE_SMPTE170M, | ||
683 | }; | ||
684 | int ret; | ||
685 | |||
686 | dev_dbg(vou_dev->v4l2_dev.dev, "%s(): %ux%u -> %ux%u\n", __func__, | ||
687 | vou_dev->rect.width, vou_dev->rect.height, | ||
688 | pix->width, pix->height); | ||
689 | |||
690 | if (pix->field == V4L2_FIELD_ANY) | ||
691 | pix->field = V4L2_FIELD_NONE; | ||
692 | |||
693 | if (fmt->type != V4L2_BUF_TYPE_VIDEO_OUTPUT || | ||
694 | pix->field != V4L2_FIELD_NONE) | ||
695 | return -EINVAL; | ||
696 | |||
697 | for (pix_idx = 0; pix_idx < ARRAY_SIZE(vou_fmt); pix_idx++) | ||
698 | if (vou_fmt[pix_idx].pfmt == pix->pixelformat) | ||
699 | break; | ||
700 | |||
701 | if (pix_idx == ARRAY_SIZE(vou_fmt)) | ||
702 | return -EINVAL; | ||
703 | |||
704 | /* Image width must be a multiple of 4 */ | ||
705 | v4l_bound_align_image(&pix->width, 0, VOU_MAX_IMAGE_WIDTH, 2, | ||
706 | &pix->height, 0, VOU_MAX_IMAGE_HEIGHT, 1, 0); | ||
707 | |||
708 | geo.in_width = pix->width; | ||
709 | geo.in_height = pix->height; | ||
710 | geo.output = vou_dev->rect; | ||
711 | |||
712 | vou_adjust_output(&geo, vou_dev->std); | ||
713 | |||
714 | mbfmt.width = geo.output.width; | ||
715 | mbfmt.height = geo.output.height; | ||
716 | ret = v4l2_device_call_until_err(&vou_dev->v4l2_dev, 0, video, | ||
717 | s_mbus_fmt, &mbfmt); | ||
718 | /* Must be implemented, so, don't check for -ENOIOCTLCMD */ | ||
719 | if (ret < 0) | ||
720 | return ret; | ||
721 | |||
722 | dev_dbg(vou_dev->v4l2_dev.dev, "%s(): %ux%u -> %ux%u\n", __func__, | ||
723 | geo.output.width, geo.output.height, mbfmt.width, mbfmt.height); | ||
724 | |||
725 | /* Sanity checks */ | ||
726 | if ((unsigned)mbfmt.width > VOU_MAX_IMAGE_WIDTH || | ||
727 | (unsigned)mbfmt.height > VOU_MAX_IMAGE_HEIGHT || | ||
728 | mbfmt.code != V4L2_MBUS_FMT_YUYV8_2X8_LE) | ||
729 | return -EIO; | ||
730 | |||
731 | if (mbfmt.width != geo.output.width || | ||
732 | mbfmt.height != geo.output.height) { | ||
733 | geo.output.width = mbfmt.width; | ||
734 | geo.output.height = mbfmt.height; | ||
735 | |||
736 | vou_adjust_input(&geo, vou_dev->std); | ||
737 | } | ||
738 | |||
739 | /* We tried to preserve output rectangle, but it could have changed */ | ||
740 | vou_dev->rect = geo.output; | ||
741 | pix->width = geo.in_width; | ||
742 | pix->height = geo.in_height; | ||
743 | |||
744 | dev_dbg(vou_dev->v4l2_dev.dev, "%s(): %ux%u\n", __func__, | ||
745 | pix->width, pix->height); | ||
746 | |||
747 | vou_dev->pix_idx = pix_idx; | ||
748 | |||
749 | vou_dev->pix = *pix; | ||
750 | |||
751 | sh_vou_configure_geometry(vou_dev, pix_idx, | ||
752 | geo.scale_idx_h, geo.scale_idx_v); | ||
753 | |||
754 | return 0; | ||
755 | } | ||
756 | |||
757 | static int sh_vou_try_fmt_vid_out(struct file *file, void *priv, | ||
758 | struct v4l2_format *fmt) | ||
759 | { | ||
760 | struct sh_vou_file *vou_file = priv; | ||
761 | struct v4l2_pix_format *pix = &fmt->fmt.pix; | ||
762 | int i; | ||
763 | |||
764 | dev_dbg(vou_file->vbq.dev, "%s()\n", __func__); | ||
765 | |||
766 | fmt->type = V4L2_BUF_TYPE_VIDEO_OUTPUT; | ||
767 | pix->field = V4L2_FIELD_NONE; | ||
768 | |||
769 | v4l_bound_align_image(&pix->width, 0, VOU_MAX_IMAGE_WIDTH, 1, | ||
770 | &pix->height, 0, VOU_MAX_IMAGE_HEIGHT, 1, 0); | ||
771 | |||
772 | for (i = 0; ARRAY_SIZE(vou_fmt); i++) | ||
773 | if (vou_fmt[i].pfmt == pix->pixelformat) | ||
774 | return 0; | ||
775 | |||
776 | pix->pixelformat = vou_fmt[0].pfmt; | ||
777 | |||
778 | return 0; | ||
779 | } | ||
780 | |||
781 | static int sh_vou_reqbufs(struct file *file, void *priv, | ||
782 | struct v4l2_requestbuffers *req) | ||
783 | { | ||
784 | struct sh_vou_file *vou_file = priv; | ||
785 | |||
786 | dev_dbg(vou_file->vbq.dev, "%s()\n", __func__); | ||
787 | |||
788 | if (req->type != V4L2_BUF_TYPE_VIDEO_OUTPUT) | ||
789 | return -EINVAL; | ||
790 | |||
791 | return videobuf_reqbufs(&vou_file->vbq, req); | ||
792 | } | ||
793 | |||
794 | static int sh_vou_querybuf(struct file *file, void *priv, | ||
795 | struct v4l2_buffer *b) | ||
796 | { | ||
797 | struct sh_vou_file *vou_file = priv; | ||
798 | |||
799 | dev_dbg(vou_file->vbq.dev, "%s()\n", __func__); | ||
800 | |||
801 | return videobuf_querybuf(&vou_file->vbq, b); | ||
802 | } | ||
803 | |||
804 | static int sh_vou_qbuf(struct file *file, void *priv, struct v4l2_buffer *b) | ||
805 | { | ||
806 | struct sh_vou_file *vou_file = priv; | ||
807 | |||
808 | dev_dbg(vou_file->vbq.dev, "%s()\n", __func__); | ||
809 | |||
810 | return videobuf_qbuf(&vou_file->vbq, b); | ||
811 | } | ||
812 | |||
813 | static int sh_vou_dqbuf(struct file *file, void *priv, struct v4l2_buffer *b) | ||
814 | { | ||
815 | struct sh_vou_file *vou_file = priv; | ||
816 | |||
817 | dev_dbg(vou_file->vbq.dev, "%s()\n", __func__); | ||
818 | |||
819 | return videobuf_dqbuf(&vou_file->vbq, b, file->f_flags & O_NONBLOCK); | ||
820 | } | ||
821 | |||
822 | static int sh_vou_streamon(struct file *file, void *priv, | ||
823 | enum v4l2_buf_type buftype) | ||
824 | { | ||
825 | struct video_device *vdev = video_devdata(file); | ||
826 | struct sh_vou_device *vou_dev = video_get_drvdata(vdev); | ||
827 | struct sh_vou_file *vou_file = priv; | ||
828 | int ret; | ||
829 | |||
830 | dev_dbg(vou_file->vbq.dev, "%s()\n", __func__); | ||
831 | |||
832 | ret = v4l2_device_call_until_err(&vou_dev->v4l2_dev, 0, | ||
833 | video, s_stream, 1); | ||
834 | if (ret < 0 && ret != -ENOIOCTLCMD) | ||
835 | return ret; | ||
836 | |||
837 | /* This calls our .buf_queue() (== sh_vou_buf_queue) */ | ||
838 | return videobuf_streamon(&vou_file->vbq); | ||
839 | } | ||
840 | |||
841 | static int sh_vou_streamoff(struct file *file, void *priv, | ||
842 | enum v4l2_buf_type buftype) | ||
843 | { | ||
844 | struct video_device *vdev = video_devdata(file); | ||
845 | struct sh_vou_device *vou_dev = video_get_drvdata(vdev); | ||
846 | struct sh_vou_file *vou_file = priv; | ||
847 | |||
848 | dev_dbg(vou_file->vbq.dev, "%s()\n", __func__); | ||
849 | |||
850 | /* | ||
851 | * This calls buf_release from host driver's videobuf_queue_ops for all | ||
852 | * remaining buffers. When the last buffer is freed, stop streaming | ||
853 | */ | ||
854 | videobuf_streamoff(&vou_file->vbq); | ||
855 | v4l2_device_call_until_err(&vou_dev->v4l2_dev, 0, video, s_stream, 0); | ||
856 | |||
857 | return 0; | ||
858 | } | ||
859 | |||
860 | static u32 sh_vou_ntsc_mode(enum sh_vou_bus_fmt bus_fmt) | ||
861 | { | ||
862 | switch (bus_fmt) { | ||
863 | default: | ||
864 | pr_warning("%s(): Invalid bus-format code %d, using default 8-bit\n", | ||
865 | __func__, bus_fmt); | ||
866 | case SH_VOU_BUS_8BIT: | ||
867 | return 1; | ||
868 | case SH_VOU_BUS_16BIT: | ||
869 | return 0; | ||
870 | case SH_VOU_BUS_BT656: | ||
871 | return 3; | ||
872 | } | ||
873 | } | ||
874 | |||
875 | static int sh_vou_s_std(struct file *file, void *priv, v4l2_std_id *std_id) | ||
876 | { | ||
877 | struct video_device *vdev = video_devdata(file); | ||
878 | struct sh_vou_device *vou_dev = video_get_drvdata(vdev); | ||
879 | int ret; | ||
880 | |||
881 | dev_dbg(vou_dev->v4l2_dev.dev, "%s(): 0x%llx\n", __func__, *std_id); | ||
882 | |||
883 | if (*std_id & ~vdev->tvnorms) | ||
884 | return -EINVAL; | ||
885 | |||
886 | ret = v4l2_device_call_until_err(&vou_dev->v4l2_dev, 0, video, | ||
887 | s_std_output, *std_id); | ||
888 | /* Shall we continue, if the subdev doesn't support .s_std_output()? */ | ||
889 | if (ret < 0 && ret != -ENOIOCTLCMD) | ||
890 | return ret; | ||
891 | |||
892 | if (*std_id & V4L2_STD_525_60) | ||
893 | sh_vou_reg_ab_set(vou_dev, VOUCR, | ||
894 | sh_vou_ntsc_mode(vou_dev->pdata->bus_fmt) << 29, 7 << 29); | ||
895 | else | ||
896 | sh_vou_reg_ab_set(vou_dev, VOUCR, 5 << 29, 7 << 29); | ||
897 | |||
898 | vou_dev->std = *std_id; | ||
899 | |||
900 | return 0; | ||
901 | } | ||
902 | |||
903 | static int sh_vou_g_std(struct file *file, void *priv, v4l2_std_id *std) | ||
904 | { | ||
905 | struct video_device *vdev = video_devdata(file); | ||
906 | struct sh_vou_device *vou_dev = video_get_drvdata(vdev); | ||
907 | |||
908 | dev_dbg(vou_dev->v4l2_dev.dev, "%s()\n", __func__); | ||
909 | |||
910 | *std = vou_dev->std; | ||
911 | |||
912 | return 0; | ||
913 | } | ||
914 | |||
915 | static int sh_vou_g_crop(struct file *file, void *fh, struct v4l2_crop *a) | ||
916 | { | ||
917 | struct video_device *vdev = video_devdata(file); | ||
918 | struct sh_vou_device *vou_dev = video_get_drvdata(vdev); | ||
919 | |||
920 | dev_dbg(vou_dev->v4l2_dev.dev, "%s()\n", __func__); | ||
921 | |||
922 | a->type = V4L2_BUF_TYPE_VIDEO_OUTPUT; | ||
923 | a->c = vou_dev->rect; | ||
924 | |||
925 | return 0; | ||
926 | } | ||
927 | |||
928 | /* Assume a dull encoder, do all the work ourselves. */ | ||
929 | static int sh_vou_s_crop(struct file *file, void *fh, struct v4l2_crop *a) | ||
930 | { | ||
931 | struct video_device *vdev = video_devdata(file); | ||
932 | struct sh_vou_device *vou_dev = video_get_drvdata(vdev); | ||
933 | struct v4l2_rect *rect = &a->c; | ||
934 | struct v4l2_crop sd_crop = {.type = V4L2_BUF_TYPE_VIDEO_OUTPUT}; | ||
935 | struct v4l2_pix_format *pix = &vou_dev->pix; | ||
936 | struct sh_vou_geometry geo; | ||
937 | struct v4l2_mbus_framefmt mbfmt = { | ||
938 | /* Revisit: is this the correct code? */ | ||
939 | .code = V4L2_MBUS_FMT_YUYV8_2X8_LE, | ||
940 | .field = V4L2_FIELD_INTERLACED, | ||
941 | .colorspace = V4L2_COLORSPACE_SMPTE170M, | ||
942 | }; | ||
943 | int ret; | ||
944 | |||
945 | dev_dbg(vou_dev->v4l2_dev.dev, "%s(): %ux%u@%u:%u\n", __func__, | ||
946 | rect->width, rect->height, rect->left, rect->top); | ||
947 | |||
948 | if (a->type != V4L2_BUF_TYPE_VIDEO_OUTPUT) | ||
949 | return -EINVAL; | ||
950 | |||
951 | v4l_bound_align_image(&rect->width, 0, VOU_MAX_IMAGE_WIDTH, 1, | ||
952 | &rect->height, 0, VOU_MAX_IMAGE_HEIGHT, 1, 0); | ||
953 | |||
954 | if (rect->width + rect->left > VOU_MAX_IMAGE_WIDTH) | ||
955 | rect->left = VOU_MAX_IMAGE_WIDTH - rect->width; | ||
956 | |||
957 | if (rect->height + rect->top > VOU_MAX_IMAGE_HEIGHT) | ||
958 | rect->top = VOU_MAX_IMAGE_HEIGHT - rect->height; | ||
959 | |||
960 | geo.output = *rect; | ||
961 | geo.in_width = pix->width; | ||
962 | geo.in_height = pix->height; | ||
963 | |||
964 | /* Configure the encoder one-to-one, position at 0, ignore errors */ | ||
965 | sd_crop.c.width = geo.output.width; | ||
966 | sd_crop.c.height = geo.output.height; | ||
967 | /* | ||
968 | * We first issue a S_CROP, so that the subsequent S_FMT delivers the | ||
969 | * final encoder configuration. | ||
970 | */ | ||
971 | v4l2_device_call_until_err(&vou_dev->v4l2_dev, 0, video, | ||
972 | s_crop, &sd_crop); | ||
973 | mbfmt.width = geo.output.width; | ||
974 | mbfmt.height = geo.output.height; | ||
975 | ret = v4l2_device_call_until_err(&vou_dev->v4l2_dev, 0, video, | ||
976 | s_mbus_fmt, &mbfmt); | ||
977 | /* Must be implemented, so, don't check for -ENOIOCTLCMD */ | ||
978 | if (ret < 0) | ||
979 | return ret; | ||
980 | |||
981 | /* Sanity checks */ | ||
982 | if ((unsigned)mbfmt.width > VOU_MAX_IMAGE_WIDTH || | ||
983 | (unsigned)mbfmt.height > VOU_MAX_IMAGE_HEIGHT || | ||
984 | mbfmt.code != V4L2_MBUS_FMT_YUYV8_2X8_LE) | ||
985 | return -EIO; | ||
986 | |||
987 | geo.output.width = mbfmt.width; | ||
988 | geo.output.height = mbfmt.height; | ||
989 | |||
990 | /* | ||
991 | * No down-scaling. According to the API, current call has precedence: | ||
992 | * http://v4l2spec.bytesex.org/spec/x1904.htm#AEN1954 paragraph two. | ||
993 | */ | ||
994 | vou_adjust_input(&geo, vou_dev->std); | ||
995 | |||
996 | /* We tried to preserve output rectangle, but it could have changed */ | ||
997 | vou_dev->rect = geo.output; | ||
998 | pix->width = geo.in_width; | ||
999 | pix->height = geo.in_height; | ||
1000 | |||
1001 | sh_vou_configure_geometry(vou_dev, vou_dev->pix_idx, | ||
1002 | geo.scale_idx_h, geo.scale_idx_v); | ||
1003 | |||
1004 | return 0; | ||
1005 | } | ||
1006 | |||
1007 | /* | ||
1008 | * Total field: NTSC 858 x 2 * 262/263, PAL 864 x 2 * 312/313, default rectangle | ||
1009 | * is the initial register values, height takes the interlaced format into | ||
1010 | * account. The actual image can only go up to 720 x 2 * 240, So, VOUVPR can | ||
1011 | * actually only meaningfully contain values <= 720 and <= 240 respectively, and | ||
1012 | * not <= 864 and <= 312. | ||
1013 | */ | ||
1014 | static int sh_vou_cropcap(struct file *file, void *priv, | ||
1015 | struct v4l2_cropcap *a) | ||
1016 | { | ||
1017 | struct sh_vou_file *vou_file = priv; | ||
1018 | |||
1019 | dev_dbg(vou_file->vbq.dev, "%s()\n", __func__); | ||
1020 | |||
1021 | a->type = V4L2_BUF_TYPE_VIDEO_OUTPUT; | ||
1022 | a->bounds.left = 0; | ||
1023 | a->bounds.top = 0; | ||
1024 | a->bounds.width = VOU_MAX_IMAGE_WIDTH; | ||
1025 | a->bounds.height = VOU_MAX_IMAGE_HEIGHT; | ||
1026 | /* Default = max, set VOUDPR = 0, which is not hardware default */ | ||
1027 | a->defrect.left = 0; | ||
1028 | a->defrect.top = 0; | ||
1029 | a->defrect.width = VOU_MAX_IMAGE_WIDTH; | ||
1030 | a->defrect.height = VOU_MAX_IMAGE_HEIGHT; | ||
1031 | a->pixelaspect.numerator = 1; | ||
1032 | a->pixelaspect.denominator = 1; | ||
1033 | |||
1034 | return 0; | ||
1035 | } | ||
1036 | |||
1037 | static irqreturn_t sh_vou_isr(int irq, void *dev_id) | ||
1038 | { | ||
1039 | struct sh_vou_device *vou_dev = dev_id; | ||
1040 | static unsigned long j; | ||
1041 | struct videobuf_buffer *vb; | ||
1042 | static int cnt; | ||
1043 | static int side; | ||
1044 | u32 irq_status = sh_vou_reg_a_read(vou_dev, VOUIR), masked; | ||
1045 | u32 vou_status = sh_vou_reg_a_read(vou_dev, VOUSTR); | ||
1046 | |||
1047 | if (!(irq_status & 0x300)) { | ||
1048 | if (printk_timed_ratelimit(&j, 500)) | ||
1049 | dev_warn(vou_dev->v4l2_dev.dev, "IRQ status 0x%x!\n", | ||
1050 | irq_status); | ||
1051 | return IRQ_NONE; | ||
1052 | } | ||
1053 | |||
1054 | spin_lock(&vou_dev->lock); | ||
1055 | if (!vou_dev->active || list_empty(&vou_dev->queue)) { | ||
1056 | if (printk_timed_ratelimit(&j, 500)) | ||
1057 | dev_warn(vou_dev->v4l2_dev.dev, | ||
1058 | "IRQ without active buffer: %x!\n", irq_status); | ||
1059 | /* Just ack: buf_release will disable further interrupts */ | ||
1060 | sh_vou_reg_a_set(vou_dev, VOUIR, 0, 0x300); | ||
1061 | spin_unlock(&vou_dev->lock); | ||
1062 | return IRQ_HANDLED; | ||
1063 | } | ||
1064 | |||
1065 | masked = ~(0x300 & irq_status) & irq_status & 0x30304; | ||
1066 | dev_dbg(vou_dev->v4l2_dev.dev, | ||
1067 | "IRQ status 0x%x -> 0x%x, VOU status 0x%x, cnt %d\n", | ||
1068 | irq_status, masked, vou_status, cnt); | ||
1069 | |||
1070 | cnt++; | ||
1071 | side = vou_status & 0x10000; | ||
1072 | |||
1073 | /* Clear only set interrupts */ | ||
1074 | sh_vou_reg_a_write(vou_dev, VOUIR, masked); | ||
1075 | |||
1076 | vb = vou_dev->active; | ||
1077 | list_del(&vb->queue); | ||
1078 | |||
1079 | vb->state = VIDEOBUF_DONE; | ||
1080 | do_gettimeofday(&vb->ts); | ||
1081 | vb->field_count++; | ||
1082 | wake_up(&vb->done); | ||
1083 | |||
1084 | if (list_empty(&vou_dev->queue)) { | ||
1085 | /* Stop VOU */ | ||
1086 | dev_dbg(vou_dev->v4l2_dev.dev, "%s: queue empty after %d\n", | ||
1087 | __func__, cnt); | ||
1088 | sh_vou_reg_a_set(vou_dev, VOUER, 0, 1); | ||
1089 | vou_dev->active = NULL; | ||
1090 | vou_dev->status = SH_VOU_INITIALISING; | ||
1091 | /* Disable End-of-Frame (VSYNC) interrupts */ | ||
1092 | sh_vou_reg_a_set(vou_dev, VOUIR, 0, 0x30000); | ||
1093 | spin_unlock(&vou_dev->lock); | ||
1094 | return IRQ_HANDLED; | ||
1095 | } | ||
1096 | |||
1097 | vou_dev->active = list_entry(vou_dev->queue.next, | ||
1098 | struct videobuf_buffer, queue); | ||
1099 | |||
1100 | if (vou_dev->active->queue.next != &vou_dev->queue) { | ||
1101 | struct videobuf_buffer *new = list_entry(vou_dev->active->queue.next, | ||
1102 | struct videobuf_buffer, queue); | ||
1103 | sh_vou_schedule_next(vou_dev, new); | ||
1104 | } | ||
1105 | |||
1106 | spin_unlock(&vou_dev->lock); | ||
1107 | |||
1108 | return IRQ_HANDLED; | ||
1109 | } | ||
1110 | |||
1111 | static int sh_vou_hw_init(struct sh_vou_device *vou_dev) | ||
1112 | { | ||
1113 | struct sh_vou_pdata *pdata = vou_dev->pdata; | ||
1114 | u32 voucr = sh_vou_ntsc_mode(pdata->bus_fmt) << 29; | ||
1115 | int i = 100; | ||
1116 | |||
1117 | /* Disable all IRQs */ | ||
1118 | sh_vou_reg_a_write(vou_dev, VOUIR, 0); | ||
1119 | |||
1120 | /* Reset VOU interfaces - registers unaffected */ | ||
1121 | sh_vou_reg_a_write(vou_dev, VOUSRR, 0x101); | ||
1122 | while (--i && (sh_vou_reg_a_read(vou_dev, VOUSRR) & 0x101)) | ||
1123 | udelay(1); | ||
1124 | |||
1125 | if (!i) | ||
1126 | return -ETIMEDOUT; | ||
1127 | |||
1128 | dev_dbg(vou_dev->v4l2_dev.dev, "Reset took %dus\n", 100 - i); | ||
1129 | |||
1130 | if (pdata->flags & SH_VOU_PCLK_FALLING) | ||
1131 | voucr |= 1 << 28; | ||
1132 | if (pdata->flags & SH_VOU_HSYNC_LOW) | ||
1133 | voucr |= 1 << 27; | ||
1134 | if (pdata->flags & SH_VOU_VSYNC_LOW) | ||
1135 | voucr |= 1 << 26; | ||
1136 | sh_vou_reg_ab_set(vou_dev, VOUCR, voucr, 0xfc000000); | ||
1137 | |||
1138 | /* Manual register side switching at first */ | ||
1139 | sh_vou_reg_a_write(vou_dev, VOURCR, 4); | ||
1140 | /* Default - fixed HSYNC length, can be made configurable is required */ | ||
1141 | sh_vou_reg_ab_write(vou_dev, VOUMSR, 0x800000); | ||
1142 | |||
1143 | return 0; | ||
1144 | } | ||
1145 | |||
1146 | /* File operations */ | ||
1147 | static int sh_vou_open(struct file *file) | ||
1148 | { | ||
1149 | struct video_device *vdev = video_devdata(file); | ||
1150 | struct sh_vou_device *vou_dev = video_get_drvdata(vdev); | ||
1151 | struct sh_vou_file *vou_file = kzalloc(sizeof(struct sh_vou_file), | ||
1152 | GFP_KERNEL); | ||
1153 | |||
1154 | if (!vou_file) | ||
1155 | return -ENOMEM; | ||
1156 | |||
1157 | dev_dbg(vou_dev->v4l2_dev.dev, "%s()\n", __func__); | ||
1158 | |||
1159 | file->private_data = vou_file; | ||
1160 | |||
1161 | if (atomic_inc_return(&vou_dev->use_count) == 1) { | ||
1162 | int ret; | ||
1163 | /* First open */ | ||
1164 | vou_dev->status = SH_VOU_INITIALISING; | ||
1165 | pm_runtime_get_sync(vdev->v4l2_dev->dev); | ||
1166 | ret = sh_vou_hw_init(vou_dev); | ||
1167 | if (ret < 0) { | ||
1168 | atomic_dec(&vou_dev->use_count); | ||
1169 | pm_runtime_put(vdev->v4l2_dev->dev); | ||
1170 | vou_dev->status = SH_VOU_IDLE; | ||
1171 | return ret; | ||
1172 | } | ||
1173 | } | ||
1174 | |||
1175 | videobuf_queue_dma_contig_init(&vou_file->vbq, &sh_vou_video_qops, | ||
1176 | vou_dev->v4l2_dev.dev, &vou_dev->lock, | ||
1177 | V4L2_BUF_TYPE_VIDEO_OUTPUT, | ||
1178 | V4L2_FIELD_NONE, | ||
1179 | sizeof(struct videobuf_buffer), vdev); | ||
1180 | |||
1181 | return 0; | ||
1182 | } | ||
1183 | |||
1184 | static int sh_vou_release(struct file *file) | ||
1185 | { | ||
1186 | struct video_device *vdev = video_devdata(file); | ||
1187 | struct sh_vou_device *vou_dev = video_get_drvdata(vdev); | ||
1188 | struct sh_vou_file *vou_file = file->private_data; | ||
1189 | |||
1190 | dev_dbg(vou_file->vbq.dev, "%s()\n", __func__); | ||
1191 | |||
1192 | if (!atomic_dec_return(&vou_dev->use_count)) { | ||
1193 | /* Last close */ | ||
1194 | vou_dev->status = SH_VOU_IDLE; | ||
1195 | sh_vou_reg_a_set(vou_dev, VOUER, 0, 0x101); | ||
1196 | pm_runtime_put(vdev->v4l2_dev->dev); | ||
1197 | } | ||
1198 | |||
1199 | file->private_data = NULL; | ||
1200 | kfree(vou_file); | ||
1201 | |||
1202 | return 0; | ||
1203 | } | ||
1204 | |||
1205 | static int sh_vou_mmap(struct file *file, struct vm_area_struct *vma) | ||
1206 | { | ||
1207 | struct sh_vou_file *vou_file = file->private_data; | ||
1208 | |||
1209 | dev_dbg(vou_file->vbq.dev, "%s()\n", __func__); | ||
1210 | |||
1211 | return videobuf_mmap_mapper(&vou_file->vbq, vma); | ||
1212 | } | ||
1213 | |||
1214 | static unsigned int sh_vou_poll(struct file *file, poll_table *wait) | ||
1215 | { | ||
1216 | struct sh_vou_file *vou_file = file->private_data; | ||
1217 | |||
1218 | dev_dbg(vou_file->vbq.dev, "%s()\n", __func__); | ||
1219 | |||
1220 | return videobuf_poll_stream(file, &vou_file->vbq, wait); | ||
1221 | } | ||
1222 | |||
1223 | static int sh_vou_g_chip_ident(struct file *file, void *fh, | ||
1224 | struct v4l2_dbg_chip_ident *id) | ||
1225 | { | ||
1226 | struct video_device *vdev = video_devdata(file); | ||
1227 | struct sh_vou_device *vou_dev = video_get_drvdata(vdev); | ||
1228 | |||
1229 | return v4l2_device_call_until_err(&vou_dev->v4l2_dev, 0, core, g_chip_ident, id); | ||
1230 | } | ||
1231 | |||
1232 | #ifdef CONFIG_VIDEO_ADV_DEBUG | ||
1233 | static int sh_vou_g_register(struct file *file, void *fh, | ||
1234 | struct v4l2_dbg_register *reg) | ||
1235 | { | ||
1236 | struct video_device *vdev = video_devdata(file); | ||
1237 | struct sh_vou_device *vou_dev = video_get_drvdata(vdev); | ||
1238 | |||
1239 | return v4l2_device_call_until_err(&vou_dev->v4l2_dev, 0, core, g_register, reg); | ||
1240 | } | ||
1241 | |||
1242 | static int sh_vou_s_register(struct file *file, void *fh, | ||
1243 | struct v4l2_dbg_register *reg) | ||
1244 | { | ||
1245 | struct video_device *vdev = video_devdata(file); | ||
1246 | struct sh_vou_device *vou_dev = video_get_drvdata(vdev); | ||
1247 | |||
1248 | return v4l2_device_call_until_err(&vou_dev->v4l2_dev, 0, core, s_register, reg); | ||
1249 | } | ||
1250 | #endif | ||
1251 | |||
1252 | /* sh_vou display ioctl operations */ | ||
1253 | static const struct v4l2_ioctl_ops sh_vou_ioctl_ops = { | ||
1254 | .vidioc_querycap = sh_vou_querycap, | ||
1255 | .vidioc_enum_fmt_vid_out = sh_vou_enum_fmt_vid_out, | ||
1256 | .vidioc_g_fmt_vid_out = sh_vou_g_fmt_vid_out, | ||
1257 | .vidioc_s_fmt_vid_out = sh_vou_s_fmt_vid_out, | ||
1258 | .vidioc_try_fmt_vid_out = sh_vou_try_fmt_vid_out, | ||
1259 | .vidioc_reqbufs = sh_vou_reqbufs, | ||
1260 | .vidioc_querybuf = sh_vou_querybuf, | ||
1261 | .vidioc_qbuf = sh_vou_qbuf, | ||
1262 | .vidioc_dqbuf = sh_vou_dqbuf, | ||
1263 | .vidioc_streamon = sh_vou_streamon, | ||
1264 | .vidioc_streamoff = sh_vou_streamoff, | ||
1265 | .vidioc_s_std = sh_vou_s_std, | ||
1266 | .vidioc_g_std = sh_vou_g_std, | ||
1267 | .vidioc_cropcap = sh_vou_cropcap, | ||
1268 | .vidioc_g_crop = sh_vou_g_crop, | ||
1269 | .vidioc_s_crop = sh_vou_s_crop, | ||
1270 | .vidioc_g_chip_ident = sh_vou_g_chip_ident, | ||
1271 | #ifdef CONFIG_VIDEO_ADV_DEBUG | ||
1272 | .vidioc_g_register = sh_vou_g_register, | ||
1273 | .vidioc_s_register = sh_vou_s_register, | ||
1274 | #endif | ||
1275 | }; | ||
1276 | |||
1277 | static const struct v4l2_file_operations sh_vou_fops = { | ||
1278 | .owner = THIS_MODULE, | ||
1279 | .open = sh_vou_open, | ||
1280 | .release = sh_vou_release, | ||
1281 | .ioctl = video_ioctl2, | ||
1282 | .mmap = sh_vou_mmap, | ||
1283 | .poll = sh_vou_poll, | ||
1284 | }; | ||
1285 | |||
1286 | static const struct video_device sh_vou_video_template = { | ||
1287 | .name = "sh_vou", | ||
1288 | .fops = &sh_vou_fops, | ||
1289 | .ioctl_ops = &sh_vou_ioctl_ops, | ||
1290 | .tvnorms = V4L2_STD_525_60, /* PAL only supported in 8-bit non-bt656 mode */ | ||
1291 | .current_norm = V4L2_STD_NTSC_M, | ||
1292 | }; | ||
1293 | |||
1294 | static int __devinit sh_vou_probe(struct platform_device *pdev) | ||
1295 | { | ||
1296 | struct sh_vou_pdata *vou_pdata = pdev->dev.platform_data; | ||
1297 | struct v4l2_rect *rect; | ||
1298 | struct v4l2_pix_format *pix; | ||
1299 | struct i2c_adapter *i2c_adap; | ||
1300 | struct video_device *vdev; | ||
1301 | struct sh_vou_device *vou_dev; | ||
1302 | struct resource *reg_res, *region; | ||
1303 | struct v4l2_subdev *subdev; | ||
1304 | int irq, ret; | ||
1305 | |||
1306 | reg_res = platform_get_resource(pdev, IORESOURCE_MEM, 0); | ||
1307 | irq = platform_get_irq(pdev, 0); | ||
1308 | |||
1309 | if (!vou_pdata || !reg_res || irq <= 0) { | ||
1310 | dev_err(&pdev->dev, "Insufficient VOU platform information.\n"); | ||
1311 | return -ENODEV; | ||
1312 | } | ||
1313 | |||
1314 | vou_dev = kzalloc(sizeof(*vou_dev), GFP_KERNEL); | ||
1315 | if (!vou_dev) | ||
1316 | return -ENOMEM; | ||
1317 | |||
1318 | INIT_LIST_HEAD(&vou_dev->queue); | ||
1319 | spin_lock_init(&vou_dev->lock); | ||
1320 | atomic_set(&vou_dev->use_count, 0); | ||
1321 | vou_dev->pdata = vou_pdata; | ||
1322 | vou_dev->status = SH_VOU_IDLE; | ||
1323 | |||
1324 | rect = &vou_dev->rect; | ||
1325 | pix = &vou_dev->pix; | ||
1326 | |||
1327 | /* Fill in defaults */ | ||
1328 | vou_dev->std = sh_vou_video_template.current_norm; | ||
1329 | rect->left = 0; | ||
1330 | rect->top = 0; | ||
1331 | rect->width = VOU_MAX_IMAGE_WIDTH; | ||
1332 | rect->height = VOU_MAX_IMAGE_HEIGHT; | ||
1333 | pix->width = VOU_MAX_IMAGE_WIDTH; | ||
1334 | pix->height = VOU_MAX_IMAGE_HEIGHT; | ||
1335 | pix->pixelformat = V4L2_PIX_FMT_YVYU; | ||
1336 | pix->field = V4L2_FIELD_NONE; | ||
1337 | pix->bytesperline = VOU_MAX_IMAGE_WIDTH * 2; | ||
1338 | pix->sizeimage = VOU_MAX_IMAGE_WIDTH * 2 * VOU_MAX_IMAGE_HEIGHT; | ||
1339 | pix->colorspace = V4L2_COLORSPACE_SMPTE170M; | ||
1340 | |||
1341 | region = request_mem_region(reg_res->start, resource_size(reg_res), | ||
1342 | pdev->name); | ||
1343 | if (!region) { | ||
1344 | dev_err(&pdev->dev, "VOU region already claimed\n"); | ||
1345 | ret = -EBUSY; | ||
1346 | goto ereqmemreg; | ||
1347 | } | ||
1348 | |||
1349 | vou_dev->base = ioremap(reg_res->start, resource_size(reg_res)); | ||
1350 | if (!vou_dev->base) { | ||
1351 | ret = -ENOMEM; | ||
1352 | goto emap; | ||
1353 | } | ||
1354 | |||
1355 | ret = request_irq(irq, sh_vou_isr, 0, "vou", vou_dev); | ||
1356 | if (ret < 0) | ||
1357 | goto ereqirq; | ||
1358 | |||
1359 | ret = v4l2_device_register(&pdev->dev, &vou_dev->v4l2_dev); | ||
1360 | if (ret < 0) { | ||
1361 | dev_err(&pdev->dev, "Error registering v4l2 device\n"); | ||
1362 | goto ev4l2devreg; | ||
1363 | } | ||
1364 | |||
1365 | /* Allocate memory for video device */ | ||
1366 | vdev = video_device_alloc(); | ||
1367 | if (vdev == NULL) { | ||
1368 | ret = -ENOMEM; | ||
1369 | goto evdevalloc; | ||
1370 | } | ||
1371 | |||
1372 | *vdev = sh_vou_video_template; | ||
1373 | if (vou_pdata->bus_fmt == SH_VOU_BUS_8BIT) | ||
1374 | vdev->tvnorms |= V4L2_STD_PAL; | ||
1375 | vdev->v4l2_dev = &vou_dev->v4l2_dev; | ||
1376 | vdev->release = video_device_release; | ||
1377 | |||
1378 | vou_dev->vdev = vdev; | ||
1379 | video_set_drvdata(vdev, vou_dev); | ||
1380 | |||
1381 | pm_runtime_enable(&pdev->dev); | ||
1382 | pm_runtime_resume(&pdev->dev); | ||
1383 | |||
1384 | i2c_adap = i2c_get_adapter(vou_pdata->i2c_adap); | ||
1385 | if (!i2c_adap) { | ||
1386 | ret = -ENODEV; | ||
1387 | goto ei2cgadap; | ||
1388 | } | ||
1389 | |||
1390 | ret = sh_vou_hw_init(vou_dev); | ||
1391 | if (ret < 0) | ||
1392 | goto ereset; | ||
1393 | |||
1394 | subdev = v4l2_i2c_new_subdev_board(&vou_dev->v4l2_dev, i2c_adap, | ||
1395 | vou_pdata->module_name, vou_pdata->board_info, NULL); | ||
1396 | if (!subdev) { | ||
1397 | ret = -ENOMEM; | ||
1398 | goto ei2cnd; | ||
1399 | } | ||
1400 | |||
1401 | ret = video_register_device(vdev, VFL_TYPE_GRABBER, -1); | ||
1402 | if (ret < 0) | ||
1403 | goto evregdev; | ||
1404 | |||
1405 | return 0; | ||
1406 | |||
1407 | evregdev: | ||
1408 | ei2cnd: | ||
1409 | ereset: | ||
1410 | i2c_put_adapter(i2c_adap); | ||
1411 | ei2cgadap: | ||
1412 | video_device_release(vdev); | ||
1413 | pm_runtime_disable(&pdev->dev); | ||
1414 | evdevalloc: | ||
1415 | v4l2_device_unregister(&vou_dev->v4l2_dev); | ||
1416 | ev4l2devreg: | ||
1417 | free_irq(irq, vou_dev); | ||
1418 | ereqirq: | ||
1419 | iounmap(vou_dev->base); | ||
1420 | emap: | ||
1421 | release_mem_region(reg_res->start, resource_size(reg_res)); | ||
1422 | ereqmemreg: | ||
1423 | kfree(vou_dev); | ||
1424 | return ret; | ||
1425 | } | ||
1426 | |||
1427 | static int __devexit sh_vou_remove(struct platform_device *pdev) | ||
1428 | { | ||
1429 | int irq = platform_get_irq(pdev, 0); | ||
1430 | struct v4l2_device *v4l2_dev = platform_get_drvdata(pdev); | ||
1431 | struct sh_vou_device *vou_dev = container_of(v4l2_dev, | ||
1432 | struct sh_vou_device, v4l2_dev); | ||
1433 | struct v4l2_subdev *sd = list_entry(v4l2_dev->subdevs.next, | ||
1434 | struct v4l2_subdev, list); | ||
1435 | struct i2c_client *client = v4l2_get_subdevdata(sd); | ||
1436 | struct resource *reg_res; | ||
1437 | |||
1438 | if (irq > 0) | ||
1439 | free_irq(irq, vou_dev); | ||
1440 | pm_runtime_disable(&pdev->dev); | ||
1441 | video_unregister_device(vou_dev->vdev); | ||
1442 | i2c_put_adapter(client->adapter); | ||
1443 | v4l2_device_unregister(&vou_dev->v4l2_dev); | ||
1444 | iounmap(vou_dev->base); | ||
1445 | reg_res = platform_get_resource(pdev, IORESOURCE_MEM, 0); | ||
1446 | if (reg_res) | ||
1447 | release_mem_region(reg_res->start, resource_size(reg_res)); | ||
1448 | kfree(vou_dev); | ||
1449 | return 0; | ||
1450 | } | ||
1451 | |||
1452 | static struct platform_driver __refdata sh_vou = { | ||
1453 | .remove = __devexit_p(sh_vou_remove), | ||
1454 | .driver = { | ||
1455 | .name = "sh-vou", | ||
1456 | .owner = THIS_MODULE, | ||
1457 | }, | ||
1458 | }; | ||
1459 | |||
1460 | static int __init sh_vou_init(void) | ||
1461 | { | ||
1462 | return platform_driver_probe(&sh_vou, sh_vou_probe); | ||
1463 | } | ||
1464 | |||
1465 | static void __exit sh_vou_exit(void) | ||
1466 | { | ||
1467 | platform_driver_unregister(&sh_vou); | ||
1468 | } | ||
1469 | |||
1470 | module_init(sh_vou_init); | ||
1471 | module_exit(sh_vou_exit); | ||
1472 | |||
1473 | MODULE_DESCRIPTION("SuperH VOU driver"); | ||
1474 | MODULE_AUTHOR("Guennadi Liakhovetski <g.liakhovetski@gmx.de>"); | ||
1475 | MODULE_LICENSE("GPL v2"); | ||
1476 | MODULE_ALIAS("platform:sh-vou"); | ||