Commit a81fb9b223508f5773d8d7e226b1574d1b068642
Committed by
Mauro Carvalho Chehab
1 parent
f35f1bb8fc
Exists in
master
and in
7 other branches
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>
Showing 4 changed files with 1521 additions and 0 deletions Side-by-side Diff
drivers/media/video/Kconfig
... | ... | @@ -520,6 +520,13 @@ |
520 | 520 | To compile this driver as a module, choose M here: the |
521 | 521 | module will be called vpif_display. |
522 | 522 | |
523 | +config VIDEO_SH_VOU | |
524 | + tristate "SuperH VOU video output driver" | |
525 | + depends on VIDEO_DEV && ARCH_SHMOBILE | |
526 | + select VIDEOBUF_DMA_CONTIG | |
527 | + help | |
528 | + Support for the Video Output Unit (VOU) on SuperH SoCs. | |
529 | + | |
523 | 530 | config CAPTURE_DAVINCI_DM646X_EVM |
524 | 531 | tristate "DM646x EVM Video Capture" |
525 | 532 | depends on VIDEO_DEV && MACH_DAVINCI_DM6467_EVM |
drivers/media/video/Makefile
... | ... | @@ -160,6 +160,10 @@ |
160 | 160 | obj-$(CONFIG_VIDEO_PXA27x) += pxa_camera.o |
161 | 161 | obj-$(CONFIG_VIDEO_SH_MOBILE_CEU) += sh_mobile_ceu_camera.o |
162 | 162 | |
163 | +obj-$(CONFIG_ARCH_DAVINCI) += davinci/ | |
164 | + | |
165 | +obj-$(CONFIG_VIDEO_SH_VOU) += sh_vou.o | |
166 | + | |
163 | 167 | obj-$(CONFIG_VIDEO_AU0828) += au0828/ |
164 | 168 | |
165 | 169 | obj-$(CONFIG_USB_VIDEO_CLASS) += uvc/ |
drivers/media/video/sh_vou.c
Changes suppressed. Click to show
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"); |
include/media/sh_vou.h
1 | +/* | |
2 | + * SuperH Video Output Unit (VOU) driver header | |
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 | +#ifndef SH_VOU_H | |
11 | +#define SH_VOU_H | |
12 | + | |
13 | +#include <linux/i2c.h> | |
14 | + | |
15 | +/* Bus flags */ | |
16 | +#define SH_VOU_PCLK_FALLING (1 << 0) | |
17 | +#define SH_VOU_HSYNC_LOW (1 << 1) | |
18 | +#define SH_VOU_VSYNC_LOW (1 << 2) | |
19 | + | |
20 | +enum sh_vou_bus_fmt { | |
21 | + SH_VOU_BUS_8BIT, | |
22 | + SH_VOU_BUS_16BIT, | |
23 | + SH_VOU_BUS_BT656, | |
24 | +}; | |
25 | + | |
26 | +struct sh_vou_pdata { | |
27 | + enum sh_vou_bus_fmt bus_fmt; | |
28 | + int i2c_adap; | |
29 | + struct i2c_board_info *board_info; | |
30 | + unsigned long flags; | |
31 | + char *module_name; | |
32 | +}; | |
33 | + | |
34 | +#endif |