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Merge remote-tracking branch 'lightnvm/for-next'
[deliverable/linux.git] / drivers / media / platform / sh_vou.c
CommitLineData
a81fb9b2
GL		 1/*
2 * SuperH Video Output Unit (VOU) driver
3 *
4 * Copyright (C) 2010, Guennadi Liakhovetski <g.liakhovetski@gmx.de>
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.
9 */
10
11#include <linux/dma-mapping.h>
12#include <linux/delay.h>
13#include <linux/errno.h>
14#include <linux/fs.h>
15#include <linux/i2c.h>
16#include <linux/init.h>
17#include <linux/interrupt.h>
18#include <linux/kernel.h>
19#include <linux/platform_device.h>
20#include <linux/pm_runtime.h>
3b23db39 21#include <linux/slab.h>
a81fb9b2 22#include <linux/videodev2.h>
7a707b89 23#include <linux/module.h>
a81fb9b2 24
d647f0b7 25#include <media/drv-intf/sh_vou.h>
a81fb9b2
GL		 26#include <media/v4l2-common.h>
27#include <media/v4l2-device.h>
28#include <media/v4l2-ioctl.h>
29#include <media/v4l2-mediabus.h>
2d700715 30#include <media/videobuf2-v4l2.h>
57af3ad5 31#include <media/videobuf2-dma-contig.h>
a81fb9b2
GL		 32
33/* Mirror addresses are not available for all registers */
34#define VOUER 0
35#define VOUCR 4
36#define VOUSTR 8
37#define VOUVCR 0xc
38#define VOUISR 0x10
39#define VOUBCR 0x14
40#define VOUDPR 0x18
41#define VOUDSR 0x1c
42#define VOUVPR 0x20
43#define VOUIR 0x24
44#define VOUSRR 0x28
45#define VOUMSR 0x2c
46#define VOUHIR 0x30
47#define VOUDFR 0x34
48#define VOUAD1R 0x38
49#define VOUAD2R 0x3c
50#define VOUAIR 0x40
51#define VOUSWR 0x44
52#define VOURCR 0x48
53#define VOURPR 0x50
54
55enum sh_vou_status {
56 SH_VOU_IDLE,
57 SH_VOU_INITIALISING,
58 SH_VOU_RUNNING,
59};
60
57af3ad5 61#define VOU_MIN_IMAGE_WIDTH 16
a81fb9b2 62#define VOU_MAX_IMAGE_WIDTH 720
57af3ad5
HV		 63#define VOU_MIN_IMAGE_HEIGHT 16
64
65struct sh_vou_buffer {
2d700715 66 struct vb2_v4l2_buffer vb;
57af3ad5
HV		 67 struct list_head list;
68};
69
2d700715
JS		 70static inline struct
71sh_vou_buffer *to_sh_vou_buffer(struct vb2_v4l2_buffer *vb2)
57af3ad5
HV		 72{
73 return container_of(vb2, struct sh_vou_buffer, vb);
74}
a81fb9b2
GL		 75
76struct sh_vou_device {
77 struct v4l2_device v4l2_dev;
d079f99f 78 struct video_device vdev;
a81fb9b2
GL		 79 struct sh_vou_pdata *pdata;
80 spinlock_t lock;
81 void __iomem *base;
82 /* State information */
83 struct v4l2_pix_format pix;
84 struct v4l2_rect rect;
57af3ad5 85 struct list_head buf_list;
a81fb9b2
GL		 86 v4l2_std_id std;
87 int pix_idx;
57af3ad5 88 struct vb2_queue queue;
57af3ad5 89 struct sh_vou_buffer *active;
a81fb9b2 90 enum sh_vou_status status;
57af3ad5 91 unsigned sequence;
69756693 92 struct mutex fop_lock;
a81fb9b2
GL		 93};
94
a81fb9b2
GL		 95/* Register access routines for sides A, B and mirror addresses */
96static void sh_vou_reg_a_write(struct sh_vou_device *vou_dev, unsigned int reg,
97 u32 value)
98{
99 __raw_writel(value, vou_dev->base + reg);
100}
101
102static void sh_vou_reg_ab_write(struct sh_vou_device *vou_dev, unsigned int reg,
103 u32 value)
104{
105 __raw_writel(value, vou_dev->base + reg);
106 __raw_writel(value, vou_dev->base + reg + 0x1000);
107}
108
109static void sh_vou_reg_m_write(struct sh_vou_device *vou_dev, unsigned int reg,
110 u32 value)
111{
112 __raw_writel(value, vou_dev->base + reg + 0x2000);
113}
114
115static u32 sh_vou_reg_a_read(struct sh_vou_device *vou_dev, unsigned int reg)
116{
117 return __raw_readl(vou_dev->base + reg);
118}
119
120static void sh_vou_reg_a_set(struct sh_vou_device *vou_dev, unsigned int reg,
121 u32 value, u32 mask)
122{
123 u32 old = __raw_readl(vou_dev->base + reg);
124
125 value = (value & mask) | (old & ~mask);
126 __raw_writel(value, vou_dev->base + reg);
127}
128
129static void sh_vou_reg_b_set(struct sh_vou_device *vou_dev, unsigned int reg,
130 u32 value, u32 mask)
131{
132 sh_vou_reg_a_set(vou_dev, reg + 0x1000, value, mask);
133}
134
135static void sh_vou_reg_ab_set(struct sh_vou_device *vou_dev, unsigned int reg,
136 u32 value, u32 mask)
137{
138 sh_vou_reg_a_set(vou_dev, reg, value, mask);
139 sh_vou_reg_b_set(vou_dev, reg, value, mask);
140}
141
142struct sh_vou_fmt {
143 u32 pfmt;
144 char *desc;
145 unsigned char bpp;
5c3edcb2 146 unsigned char bpl;
a81fb9b2
GL		 147 unsigned char rgb;
148 unsigned char yf;
149 unsigned char pkf;
150};
151
152/* Further pixel formats can be added */
153static struct sh_vou_fmt vou_fmt[] = {
154 {
155 .pfmt = V4L2_PIX_FMT_NV12,
156 .bpp = 12,
5c3edcb2 157 .bpl = 1,
a81fb9b2
GL		 158 .desc = "YVU420 planar",
159 .yf = 0,
160 .rgb = 0,
161 },
162 {
163 .pfmt = V4L2_PIX_FMT_NV16,
164 .bpp = 16,
5c3edcb2 165 .bpl = 1,
a81fb9b2
GL		 166 .desc = "YVYU planar",
167 .yf = 1,
168 .rgb = 0,
169 },
170 {
171 .pfmt = V4L2_PIX_FMT_RGB24,
172 .bpp = 24,
5c3edcb2 173 .bpl = 3,
a81fb9b2
GL		 174 .desc = "RGB24",
175 .pkf = 2,
176 .rgb = 1,
177 },
178 {
179 .pfmt = V4L2_PIX_FMT_RGB565,
180 .bpp = 16,
5c3edcb2 181 .bpl = 2,
a81fb9b2
GL		 182 .desc = "RGB565",
183 .pkf = 3,
184 .rgb = 1,
185 },
186 {
187 .pfmt = V4L2_PIX_FMT_RGB565X,
188 .bpp = 16,
5c3edcb2 189 .bpl = 2,
a81fb9b2
GL		 190 .desc = "RGB565 byteswapped",
191 .pkf = 3,
192 .rgb = 1,
193 },
194};
195
196static void sh_vou_schedule_next(struct sh_vou_device *vou_dev,
2d700715 197 struct vb2_v4l2_buffer *vbuf)
a81fb9b2
GL		 198{
199 dma_addr_t addr1, addr2;
200
2d700715 201 addr1 = vb2_dma_contig_plane_dma_addr(&vbuf->vb2_buf, 0);
a81fb9b2
GL		 202 switch (vou_dev->pix.pixelformat) {
203 case V4L2_PIX_FMT_NV12:
204 case V4L2_PIX_FMT_NV16:
205 addr2 = addr1 + vou_dev->pix.width * vou_dev->pix.height;
206 break;
207 default:
208 addr2 = 0;
209 }
210
211 sh_vou_reg_m_write(vou_dev, VOUAD1R, addr1);
212 sh_vou_reg_m_write(vou_dev, VOUAD2R, addr2);
213}
214
57af3ad5 215static void sh_vou_stream_config(struct sh_vou_device *vou_dev)
a81fb9b2
GL		 216{
217 unsigned int row_coeff;
218#ifdef __LITTLE_ENDIAN
219 u32 dataswap = 7;
220#else
221 u32 dataswap = 0;
222#endif
223
224 switch (vou_dev->pix.pixelformat) {
bc1ebd70 225 default:
a81fb9b2
GL		 226 case V4L2_PIX_FMT_NV12:
227 case V4L2_PIX_FMT_NV16:
228 row_coeff = 1;
229 break;
230 case V4L2_PIX_FMT_RGB565:
231 dataswap ^= 1;
232 case V4L2_PIX_FMT_RGB565X:
233 row_coeff = 2;
234 break;
235 case V4L2_PIX_FMT_RGB24:
236 row_coeff = 3;
237 break;
238 }
239
240 sh_vou_reg_a_write(vou_dev, VOUSWR, dataswap);
241 sh_vou_reg_ab_write(vou_dev, VOUAIR, vou_dev->pix.width * row_coeff);
a81fb9b2
GL		 242}
243
69756693 244/* Locking: caller holds fop_lock mutex */
df9ecb0c 245static int sh_vou_queue_setup(struct vb2_queue *vq,
57af3ad5 246 unsigned int *nbuffers, unsigned int *nplanes,
36c0f8b3 247 unsigned int sizes[], struct device *alloc_devs[])
a81fb9b2 248{
57af3ad5
HV		 249 struct sh_vou_device *vou_dev = vb2_get_drv_priv(vq);
250 struct v4l2_pix_format *pix = &vou_dev->pix;
251 int bytes_per_line = vou_fmt[vou_dev->pix_idx].bpp * pix->width / 8;
a81fb9b2 252
57af3ad5 253 dev_dbg(vou_dev->v4l2_dev.dev, "%s()\n", __func__);
a81fb9b2 254
df9ecb0c
HV		 255 if (*nplanes)
256 return sizes[0] < pix->height * bytes_per_line ? -EINVAL : 0;
257 *nplanes = 1;
258 sizes[0] = pix->height * bytes_per_line;
a81fb9b2
GL		 259 return 0;
260}
261
57af3ad5 262static int sh_vou_buf_prepare(struct vb2_buffer *vb)
a81fb9b2 263{
57af3ad5 264 struct sh_vou_device *vou_dev = vb2_get_drv_priv(vb->vb2_queue);
a81fb9b2 265 struct v4l2_pix_format *pix = &vou_dev->pix;
57af3ad5
HV		 266 unsigned bytes_per_line = vou_fmt[vou_dev->pix_idx].bpp * pix->width / 8;
267 unsigned size = pix->height * bytes_per_line;
a81fb9b2 268
d899eddd 269 dev_dbg(vou_dev->v4l2_dev.dev, "%s()\n", __func__);
a81fb9b2 270
57af3ad5 271 if (vb2_plane_size(vb, 0) < size) {
a81fb9b2 272 /* User buffer too small */
57af3ad5
HV		 273 dev_warn(vou_dev->v4l2_dev.dev, "buffer too small (%lu < %u)\n",
274 vb2_plane_size(vb, 0), size);
a81fb9b2
GL		 275 return -EINVAL;
276 }
277
57af3ad5 278 vb2_set_plane_payload(vb, 0, size);
a81fb9b2
GL		 279 return 0;
280}
281
69756693 282/* Locking: caller holds fop_lock mutex and vq->irqlock spinlock */
57af3ad5 283static void sh_vou_buf_queue(struct vb2_buffer *vb)
a81fb9b2 284{
2d700715 285 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
57af3ad5 286 struct sh_vou_device *vou_dev = vb2_get_drv_priv(vb->vb2_queue);
2d700715 287 struct sh_vou_buffer *shbuf = to_sh_vou_buffer(vbuf);
57af3ad5 288 unsigned long flags;
a81fb9b2 289
57af3ad5
HV		 290 spin_lock_irqsave(&vou_dev->lock, flags);
291 list_add_tail(&shbuf->list, &vou_dev->buf_list);
292 spin_unlock_irqrestore(&vou_dev->lock, flags);
293}
a81fb9b2 294
57af3ad5
HV		 295static int sh_vou_start_streaming(struct vb2_queue *vq, unsigned int count)
296{
297 struct sh_vou_device *vou_dev = vb2_get_drv_priv(vq);
298 struct sh_vou_buffer *buf, *node;
299 int ret;
300
301 vou_dev->sequence = 0;
302 ret = v4l2_device_call_until_err(&vou_dev->v4l2_dev, 0,
303 video, s_stream, 1);
304 if (ret < 0 && ret != -ENOIOCTLCMD) {
305 list_for_each_entry_safe(buf, node, &vou_dev->buf_list, list) {
2d700715
JS		 306 vb2_buffer_done(&buf->vb.vb2_buf,
307 VB2_BUF_STATE_QUEUED);
57af3ad5
HV		 308 list_del(&buf->list);
309 }
310 vou_dev->active = NULL;
311 return ret;
a81fb9b2 312 }
57af3ad5
HV		 313
314 buf = list_entry(vou_dev->buf_list.next, struct sh_vou_buffer, list);
315
316 vou_dev->active = buf;
317
318 /* Start from side A: we use mirror addresses, so, set B */
319 sh_vou_reg_a_write(vou_dev, VOURPR, 1);
320 dev_dbg(vou_dev->v4l2_dev.dev, "%s: first buffer status 0x%x\n",
321 __func__, sh_vou_reg_a_read(vou_dev, VOUSTR));
322 sh_vou_schedule_next(vou_dev, &buf->vb);
323
324 buf = list_entry(buf->list.next, struct sh_vou_buffer, list);
325
326 /* Second buffer - initialise register side B */
327 sh_vou_reg_a_write(vou_dev, VOURPR, 0);
328 sh_vou_schedule_next(vou_dev, &buf->vb);
329
330 /* Register side switching with frame VSYNC */
331 sh_vou_reg_a_write(vou_dev, VOURCR, 5);
332
333 sh_vou_stream_config(vou_dev);
334 /* Enable End-of-Frame (VSYNC) interrupts */
335 sh_vou_reg_a_write(vou_dev, VOUIR, 0x10004);
336
337 /* Two buffers on the queue - activate the hardware */
338 vou_dev->status = SH_VOU_RUNNING;
339 sh_vou_reg_a_write(vou_dev, VOUER, 0x107);
340 return 0;
a81fb9b2
GL		 341}
342
57af3ad5 343static void sh_vou_stop_streaming(struct vb2_queue *vq)
a81fb9b2 344{
57af3ad5
HV		 345 struct sh_vou_device *vou_dev = vb2_get_drv_priv(vq);
346 struct sh_vou_buffer *buf, *node;
a81fb9b2
GL		 347 unsigned long flags;
348
57af3ad5
HV		 349 v4l2_device_call_until_err(&vou_dev->v4l2_dev, 0,
350 video, s_stream, 0);
351 /* disable output */
352 sh_vou_reg_a_set(vou_dev, VOUER, 0, 1);
353 /* ...but the current frame will complete */
354 sh_vou_reg_a_set(vou_dev, VOUIR, 0, 0x30000);
355 msleep(50);
a81fb9b2 356 spin_lock_irqsave(&vou_dev->lock, flags);
57af3ad5 357 list_for_each_entry_safe(buf, node, &vou_dev->buf_list, list) {
2d700715 358 vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_ERROR);
57af3ad5 359 list_del(&buf->list);
a81fb9b2 360 }
57af3ad5 361 vou_dev->active = NULL;
a81fb9b2 362 spin_unlock_irqrestore(&vou_dev->lock, flags);
a81fb9b2
GL		 363}
364
57af3ad5
HV		 365static struct vb2_ops sh_vou_qops = {
366 .queue_setup = sh_vou_queue_setup,
367 .buf_prepare = sh_vou_buf_prepare,
368 .buf_queue = sh_vou_buf_queue,
369 .start_streaming = sh_vou_start_streaming,
370 .stop_streaming = sh_vou_stop_streaming,
371 .wait_prepare = vb2_ops_wait_prepare,
372 .wait_finish = vb2_ops_wait_finish,
a81fb9b2
GL		 373};
374
375/* Video IOCTLs */
376static int sh_vou_querycap(struct file *file, void *priv,
377 struct v4l2_capability *cap)
378{
d899eddd 379 struct sh_vou_device *vou_dev = video_drvdata(file);
a81fb9b2 380
d899eddd 381 dev_dbg(vou_dev->v4l2_dev.dev, "%s()\n", __func__);
a81fb9b2
GL		 382
383 strlcpy(cap->card, "SuperH VOU", sizeof(cap->card));
d8046ee0
HV		 384 strlcpy(cap->driver, "sh-vou", sizeof(cap->driver));
385 strlcpy(cap->bus_info, "platform:sh-vou", sizeof(cap->bus_info));
57af3ad5
HV		 386 cap->device_caps = V4L2_CAP_VIDEO_OUTPUT | V4L2_CAP_READWRITE |
387 V4L2_CAP_STREAMING;
a020c747 388 cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS;
a81fb9b2
GL		 389 return 0;
390}
391
392/* Enumerate formats, that the device can accept from the user */
393static int sh_vou_enum_fmt_vid_out(struct file *file, void *priv,
394 struct v4l2_fmtdesc *fmt)
395{
d899eddd 396 struct sh_vou_device *vou_dev = video_drvdata(file);
a81fb9b2
GL		 397
398 if (fmt->index >= ARRAY_SIZE(vou_fmt))
399 return -EINVAL;
400
d899eddd 401 dev_dbg(vou_dev->v4l2_dev.dev, "%s()\n", __func__);
a81fb9b2
GL		 402
403 fmt->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
404 strlcpy(fmt->description, vou_fmt[fmt->index].desc,
405 sizeof(fmt->description));
406 fmt->pixelformat = vou_fmt[fmt->index].pfmt;
407
408 return 0;
409}
410
411static int sh_vou_g_fmt_vid_out(struct file *file, void *priv,
412 struct v4l2_format *fmt)
413{
fd51625d 414 struct sh_vou_device *vou_dev = video_drvdata(file);
a81fb9b2
GL		 415
416 dev_dbg(vou_dev->v4l2_dev.dev, "%s()\n", __func__);
417
418 fmt->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
419 fmt->fmt.pix = vou_dev->pix;
420
421 return 0;
422}
423
424static const unsigned char vou_scale_h_num[] = {1, 9, 2, 9, 4};
425static const unsigned char vou_scale_h_den[] = {1, 8, 1, 4, 1};
426static const unsigned char vou_scale_h_fld[] = {0, 2, 1, 3};
427static const unsigned char vou_scale_v_num[] = {1, 2, 4};
428static const unsigned char vou_scale_v_den[] = {1, 1, 1};
429static const unsigned char vou_scale_v_fld[] = {0, 1};
430
431static void sh_vou_configure_geometry(struct sh_vou_device *vou_dev,
432 int pix_idx, int w_idx, int h_idx)
433{
434 struct sh_vou_fmt *fmt = vou_fmt + pix_idx;
a622cc51 435 unsigned int black_left, black_top, width_max,
a81fb9b2
GL		 436 frame_in_height, frame_out_height, frame_out_top;
437 struct v4l2_rect *rect = &vou_dev->rect;
438 struct v4l2_pix_format *pix = &vou_dev->pix;
439 u32 vouvcr = 0, dsr_h, dsr_v;
440
441 if (vou_dev->std & V4L2_STD_525_60) {
442 width_max = 858;
a622cc51 443 /* height_max = 262; */
a81fb9b2
GL		 444 } else {
445 width_max = 864;
a622cc51 446 /* height_max = 312; */
a81fb9b2
GL		 447 }
448
449 frame_in_height = pix->height / 2;
450 frame_out_height = rect->height / 2;
451 frame_out_top = rect->top / 2;
452
453 /*
454 * Cropping scheme: max useful image is 720x480, and the total video
455 * area is 858x525 (NTSC) or 864x625 (PAL). AK8813 / 8814 starts
456 * sampling data beginning with fixed 276th (NTSC) / 288th (PAL) clock,
457 * of which the first 33 / 25 clocks HSYNC must be held active. This
458 * has to be configured in CR[HW]. 1 pixel equals 2 clock periods.
459 * This gives CR[HW] = 16 / 12, VPR[HVP] = 138 / 144, which gives
460 * exactly 858 - 138 = 864 - 144 = 720! We call the out-of-display area,
461 * beyond DSR, specified on the left and top by the VPR register "black
462 * pixels" and out-of-image area (DPR) "background pixels." We fix VPR
463 * at 138 / 144 : 20, because that's the HSYNC timing, that our first
464 * client requires, and that's exactly what leaves us 720 pixels for the
465 * image; we leave VPR[VVP] at default 20 for now, because the client
466 * doesn't seem to have any special requirements for it. Otherwise we
467 * could also set it to max - 240 = 22 / 72. Thus VPR depends only on
468 * the selected standard, and DPR and DSR are selected according to
469 * cropping. Q: how does the client detect the first valid line? Does
470 * HSYNC stay inactive during invalid (black) lines?
471 */
472 black_left = width_max - VOU_MAX_IMAGE_WIDTH;
473 black_top = 20;
474
475 dsr_h = rect->width + rect->left;
476 dsr_v = frame_out_height + frame_out_top;
477
478 dev_dbg(vou_dev->v4l2_dev.dev,
479 "image %ux%u, black %u:%u, offset %u:%u, display %ux%u\n",
480 pix->width, frame_in_height, black_left, black_top,
481 rect->left, frame_out_top, dsr_h, dsr_v);
482
483 /* VOUISR height - half of a frame height in frame mode */
484 sh_vou_reg_ab_write(vou_dev, VOUISR, (pix->width << 16) | frame_in_height);
485 sh_vou_reg_ab_write(vou_dev, VOUVPR, (black_left << 16) | black_top);
486 sh_vou_reg_ab_write(vou_dev, VOUDPR, (rect->left << 16) | frame_out_top);
487 sh_vou_reg_ab_write(vou_dev, VOUDSR, (dsr_h << 16) | dsr_v);
488
489 /*
490 * if necessary, we could set VOUHIR to
491 * max(black_left + dsr_h, width_max) here
492 */
493
494 if (w_idx)
495 vouvcr |= (1 << 15) | (vou_scale_h_fld[w_idx - 1] << 4);
496 if (h_idx)
497 vouvcr |= (1 << 14) | vou_scale_v_fld[h_idx - 1];
498
499 dev_dbg(vou_dev->v4l2_dev.dev, "%s: scaling 0x%x\n", fmt->desc, vouvcr);
500
501 /* To produce a colour bar for testing set bit 23 of VOUVCR */
502 sh_vou_reg_ab_write(vou_dev, VOUVCR, vouvcr);
503 sh_vou_reg_ab_write(vou_dev, VOUDFR,
504 fmt->pkf | (fmt->yf << 8) | (fmt->rgb << 16));
505}
506
507struct sh_vou_geometry {
508 struct v4l2_rect output;
509 unsigned int in_width;
510 unsigned int in_height;
511 int scale_idx_h;
512 int scale_idx_v;
513};
514
515/*
516 * Find input geometry, that we can use to produce output, closest to the
517 * requested rectangle, using VOU scaling
518 */
519static void vou_adjust_input(struct sh_vou_geometry *geo, v4l2_std_id std)
520{
521 /* The compiler cannot know, that best and idx will indeed be set */
765fe17c 522 unsigned int best_err = UINT_MAX, best = 0, img_height_max;
a81fb9b2
GL		 523 int i, idx = 0;
524
765fe17c
GL		 525 if (std & V4L2_STD_525_60)
526 img_height_max = 480;
527 else
528 img_height_max = 576;
a81fb9b2
GL		 529
530 /* Image width must be a multiple of 4 */
57af3ad5
HV		 531 v4l_bound_align_image(&geo->in_width,
532 VOU_MIN_IMAGE_WIDTH, VOU_MAX_IMAGE_WIDTH, 2,
533 &geo->in_height,
534 VOU_MIN_IMAGE_HEIGHT, img_height_max, 1, 0);
a81fb9b2
GL		 535
536 /* Select scales to come as close as possible to the output image */
537 for (i = ARRAY_SIZE(vou_scale_h_num) - 1; i >= 0; i--) {
538 unsigned int err;
539 unsigned int found = geo->output.width * vou_scale_h_den[i] /
540 vou_scale_h_num[i];
541
542 if (found > VOU_MAX_IMAGE_WIDTH)
543 /* scales increase */
544 break;
545
546 err = abs(found - geo->in_width);
547 if (err < best_err) {
548 best_err = err;
549 idx = i;
550 best = found;
551 }
552 if (!err)
553 break;
554 }
555
556 geo->in_width = best;
557 geo->scale_idx_h = idx;
558
559 best_err = UINT_MAX;
560
561 /* This loop can be replaced with one division */
562 for (i = ARRAY_SIZE(vou_scale_v_num) - 1; i >= 0; i--) {
563 unsigned int err;
564 unsigned int found = geo->output.height * vou_scale_v_den[i] /
565 vou_scale_v_num[i];
566
765fe17c 567 if (found > img_height_max)
a81fb9b2
GL		 568 /* scales increase */
569 break;
570
571 err = abs(found - geo->in_height);
572 if (err < best_err) {
573 best_err = err;
574 idx = i;
575 best = found;
576 }
577 if (!err)
578 break;
579 }
580
581 geo->in_height = best;
582 geo->scale_idx_v = idx;
583}
584
585/*
586 * Find output geometry, that we can produce, using VOU scaling, closest to
587 * the requested rectangle
588 */
589static void vou_adjust_output(struct sh_vou_geometry *geo, v4l2_std_id std)
590{
bc1ebd70
GL		 591 unsigned int best_err = UINT_MAX, best = geo->in_width,
592 width_max, height_max, img_height_max;
5ac417ef 593 int i, idx_h = 0, idx_v = 0;
a81fb9b2
GL		 594
595 if (std & V4L2_STD_525_60) {
596 width_max = 858;
597 height_max = 262 * 2;
765fe17c 598 img_height_max = 480;
a81fb9b2
GL		 599 } else {
600 width_max = 864;
601 height_max = 312 * 2;
765fe17c 602 img_height_max = 576;
a81fb9b2
GL		 603 }
604
605 /* Select scales to come as close as possible to the output image */
606 for (i = 0; i < ARRAY_SIZE(vou_scale_h_num); i++) {
607 unsigned int err;
608 unsigned int found = geo->in_width * vou_scale_h_num[i] /
609 vou_scale_h_den[i];
610
611 if (found > VOU_MAX_IMAGE_WIDTH)
612 /* scales increase */
613 break;
614
615 err = abs(found - geo->output.width);
616 if (err < best_err) {
617 best_err = err;
5ac417ef 618 idx_h = i;
a81fb9b2
GL		 619 best = found;
620 }
621 if (!err)
622 break;
623 }
624
625 geo->output.width = best;
5ac417ef 626 geo->scale_idx_h = idx_h;
a81fb9b2
GL		 627 if (geo->output.left + best > width_max)
628 geo->output.left = width_max - best;
629
630 pr_debug("%s(): W %u * %u/%u = %u\n", __func__, geo->in_width,
5ac417ef 631 vou_scale_h_num[idx_h], vou_scale_h_den[idx_h], best);
a81fb9b2
GL		 632
633 best_err = UINT_MAX;
634
635 /* This loop can be replaced with one division */
636 for (i = 0; i < ARRAY_SIZE(vou_scale_v_num); i++) {
637 unsigned int err;
638 unsigned int found = geo->in_height * vou_scale_v_num[i] /
639 vou_scale_v_den[i];
640
765fe17c 641 if (found > img_height_max)
a81fb9b2
GL		 642 /* scales increase */
643 break;
644
645 err = abs(found - geo->output.height);
646 if (err < best_err) {
647 best_err = err;
5ac417ef 648 idx_v = i;
a81fb9b2
GL		 649 best = found;
650 }
651 if (!err)
652 break;
653 }
654
655 geo->output.height = best;
5ac417ef 656 geo->scale_idx_v = idx_v;
a81fb9b2
GL		 657 if (geo->output.top + best > height_max)
658 geo->output.top = height_max - best;
659
660 pr_debug("%s(): H %u * %u/%u = %u\n", __func__, geo->in_height,
5ac417ef 661 vou_scale_v_num[idx_v], vou_scale_v_den[idx_v], best);
a81fb9b2
GL		 662}
663
66853ec4
HV		 664static int sh_vou_try_fmt_vid_out(struct file *file, void *priv,
665 struct v4l2_format *fmt)
a81fb9b2 666{
fd51625d 667 struct sh_vou_device *vou_dev = video_drvdata(file);
a81fb9b2 668 struct v4l2_pix_format *pix = &fmt->fmt.pix;
765fe17c 669 unsigned int img_height_max;
a81fb9b2 670 int pix_idx;
a81fb9b2 671
66853ec4 672 dev_dbg(vou_dev->v4l2_dev.dev, "%s()\n", __func__);
a81fb9b2 673
66853ec4
HV		 674 pix->field = V4L2_FIELD_INTERLACED;
675 pix->colorspace = V4L2_COLORSPACE_SMPTE170M;
676 pix->ycbcr_enc = pix->quantization = 0;
a81fb9b2
GL		 677
678 for (pix_idx = 0; pix_idx < ARRAY_SIZE(vou_fmt); pix_idx++)
679 if (vou_fmt[pix_idx].pfmt == pix->pixelformat)
680 break;
681
682 if (pix_idx == ARRAY_SIZE(vou_fmt))
683 return -EINVAL;
684
765fe17c
GL		 685 if (vou_dev->std & V4L2_STD_525_60)
686 img_height_max = 480;
687 else
688 img_height_max = 576;
689
57af3ad5
HV		 690 v4l_bound_align_image(&pix->width,
691 VOU_MIN_IMAGE_WIDTH, VOU_MAX_IMAGE_WIDTH, 2,
692 &pix->height,
693 VOU_MIN_IMAGE_HEIGHT, img_height_max, 1, 0);
5c3edcb2
HV		 694 pix->bytesperline = pix->width * vou_fmt[pix_idx].bpl;
695 pix->sizeimage = pix->height * ((pix->width * vou_fmt[pix_idx].bpp) >> 3);
66853ec4
HV		 696
697 return 0;
698}
699
57af3ad5
HV		 700static int sh_vou_set_fmt_vid_out(struct sh_vou_device *vou_dev,
701 struct v4l2_pix_format *pix)
66853ec4 702{
66853ec4
HV		 703 unsigned int img_height_max;
704 struct sh_vou_geometry geo;
705 struct v4l2_subdev_format format = {
706 .which = V4L2_SUBDEV_FORMAT_ACTIVE,
707 /* Revisit: is this the correct code? */
708 .format.code = MEDIA_BUS_FMT_YUYV8_2X8,
709 .format.field = V4L2_FIELD_INTERLACED,
710 .format.colorspace = V4L2_COLORSPACE_SMPTE170M,
711 };
712 struct v4l2_mbus_framefmt *mbfmt = &format.format;
66853ec4 713 int pix_idx;
57af3ad5 714 int ret;
66853ec4 715
57af3ad5
HV		 716 if (vb2_is_busy(&vou_dev->queue))
717 return -EBUSY;
66853ec4
HV		 718
719 for (pix_idx = 0; pix_idx < ARRAY_SIZE(vou_fmt); pix_idx++)
720 if (vou_fmt[pix_idx].pfmt == pix->pixelformat)
721 break;
a81fb9b2
GL		 722
723 geo.in_width = pix->width;
724 geo.in_height = pix->height;
725 geo.output = vou_dev->rect;
726
727 vou_adjust_output(&geo, vou_dev->std);
728
ebf984bb
HV		 729 mbfmt->width = geo.output.width;
730 mbfmt->height = geo.output.height;
731 ret = v4l2_device_call_until_err(&vou_dev->v4l2_dev, 0, pad,
732 set_fmt, NULL, &format);
a81fb9b2
GL		 733 /* Must be implemented, so, don't check for -ENOIOCTLCMD */
734 if (ret < 0)
735 return ret;
736
737 dev_dbg(vou_dev->v4l2_dev.dev, "%s(): %ux%u -> %ux%u\n", __func__,
ebf984bb 738 geo.output.width, geo.output.height, mbfmt->width, mbfmt->height);
a81fb9b2 739
66853ec4
HV		 740 if (vou_dev->std & V4L2_STD_525_60)
741 img_height_max = 480;
742 else
743 img_height_max = 576;
744
a81fb9b2 745 /* Sanity checks */
ebf984bb
HV		 746 if ((unsigned)mbfmt->width > VOU_MAX_IMAGE_WIDTH ||
747 (unsigned)mbfmt->height > img_height_max ||
748 mbfmt->code != MEDIA_BUS_FMT_YUYV8_2X8)
a81fb9b2
GL		 749 return -EIO;
750
ebf984bb
HV		 751 if (mbfmt->width != geo.output.width ||
752 mbfmt->height != geo.output.height) {
753 geo.output.width = mbfmt->width;
754 geo.output.height = mbfmt->height;
a81fb9b2
GL		 755
756 vou_adjust_input(&geo, vou_dev->std);
757 }
758
759 /* We tried to preserve output rectangle, but it could have changed */
760 vou_dev->rect = geo.output;
761 pix->width = geo.in_width;
762 pix->height = geo.in_height;
763
764 dev_dbg(vou_dev->v4l2_dev.dev, "%s(): %ux%u\n", __func__,
765 pix->width, pix->height);
766
767 vou_dev->pix_idx = pix_idx;
768
769 vou_dev->pix = *pix;
770
771 sh_vou_configure_geometry(vou_dev, pix_idx,
772 geo.scale_idx_h, geo.scale_idx_v);
773
774 return 0;
775}
776
57af3ad5
HV		 777static int sh_vou_s_fmt_vid_out(struct file *file, void *priv,
778 struct v4l2_format *fmt)
a81fb9b2 779{
fd51625d 780 struct sh_vou_device *vou_dev = video_drvdata(file);
57af3ad5 781 int ret = sh_vou_try_fmt_vid_out(file, priv, fmt);
a81fb9b2 782
57af3ad5 783 if (ret)
a81fb9b2 784 return ret;
57af3ad5 785 return sh_vou_set_fmt_vid_out(vou_dev, &fmt->fmt.pix);
a81fb9b2
GL		 786}
787
4de00d0e
HV		 788static int sh_vou_enum_output(struct file *file, void *fh,
789 struct v4l2_output *a)
790{
791 struct sh_vou_device *vou_dev = video_drvdata(file);
792
793 if (a->index)
794 return -EINVAL;
795 strlcpy(a->name, "Video Out", sizeof(a->name));
796 a->type = V4L2_OUTPUT_TYPE_ANALOG;
797 a->std = vou_dev->vdev.tvnorms;
798 return 0;
799}
800
2a1e91a1 801static int sh_vou_g_output(struct file *file, void *fh, unsigned int *i)
4de00d0e
HV		 802{
803 *i = 0;
804 return 0;
805}
806
2a1e91a1 807static int sh_vou_s_output(struct file *file, void *fh, unsigned int i)
4de00d0e
HV		 808{
809 return i ? -EINVAL : 0;
810}
811
a81fb9b2
GL		 812static u32 sh_vou_ntsc_mode(enum sh_vou_bus_fmt bus_fmt)
813{
814 switch (bus_fmt) {
815 default:
816 pr_warning("%s(): Invalid bus-format code %d, using default 8-bit\n",
817 __func__, bus_fmt);
818 case SH_VOU_BUS_8BIT:
819 return 1;
820 case SH_VOU_BUS_16BIT:
821 return 0;
822 case SH_VOU_BUS_BT656:
823 return 3;
824 }
825}
826
314527ac 827static int sh_vou_s_std(struct file *file, void *priv, v4l2_std_id std_id)
a81fb9b2 828{
fd51625d 829 struct sh_vou_device *vou_dev = video_drvdata(file);
a81fb9b2
GL		 830 int ret;
831
314527ac 832 dev_dbg(vou_dev->v4l2_dev.dev, "%s(): 0x%llx\n", __func__, std_id);
a81fb9b2 833
57af3ad5
HV		 834 if (std_id == vou_dev->std)
835 return 0;
836
837 if (vb2_is_busy(&vou_dev->queue))
838 return -EBUSY;
a81fb9b2
GL		 839
840 ret = v4l2_device_call_until_err(&vou_dev->v4l2_dev, 0, video,
314527ac 841 s_std_output, std_id);
a81fb9b2
GL		 842 /* Shall we continue, if the subdev doesn't support .s_std_output()? */
843 if (ret < 0 && ret != -ENOIOCTLCMD)
844 return ret;
845
57af3ad5
HV		 846 vou_dev->rect.top = vou_dev->rect.left = 0;
847 vou_dev->rect.width = VOU_MAX_IMAGE_WIDTH;
848 if (std_id & V4L2_STD_525_60) {
a81fb9b2
GL		 849 sh_vou_reg_ab_set(vou_dev, VOUCR,
850 sh_vou_ntsc_mode(vou_dev->pdata->bus_fmt) << 29, 7 << 29);
57af3ad5
HV		 851 vou_dev->rect.height = 480;
852 } else {
a81fb9b2 853 sh_vou_reg_ab_set(vou_dev, VOUCR, 5 << 29, 7 << 29);
57af3ad5
HV		 854 vou_dev->rect.height = 576;
855 }
a81fb9b2 856
57af3ad5
HV		 857 vou_dev->pix.width = vou_dev->rect.width;
858 vou_dev->pix.height = vou_dev->rect.height;
859 vou_dev->pix.bytesperline =
860 vou_dev->pix.width * vou_fmt[vou_dev->pix_idx].bpl;
861 vou_dev->pix.sizeimage = vou_dev->pix.height *
862 ((vou_dev->pix.width * vou_fmt[vou_dev->pix_idx].bpp) >> 3);
314527ac 863 vou_dev->std = std_id;
57af3ad5 864 sh_vou_set_fmt_vid_out(vou_dev, &vou_dev->pix);
a81fb9b2
GL		 865
866 return 0;
867}
868
869static int sh_vou_g_std(struct file *file, void *priv, v4l2_std_id *std)
870{
fd51625d 871 struct sh_vou_device *vou_dev = video_drvdata(file);
a81fb9b2
GL		 872
873 dev_dbg(vou_dev->v4l2_dev.dev, "%s()\n", __func__);
874
875 *std = vou_dev->std;
876
877 return 0;
878}
879
0b3474f0
HV		 880static int sh_vou_log_status(struct file *file, void *priv)
881{
882 struct sh_vou_device *vou_dev = video_drvdata(file);
883
884 pr_info("VOUER: 0x%08x\n", sh_vou_reg_a_read(vou_dev, VOUER));
885 pr_info("VOUCR: 0x%08x\n", sh_vou_reg_a_read(vou_dev, VOUCR));
886 pr_info("VOUSTR: 0x%08x\n", sh_vou_reg_a_read(vou_dev, VOUSTR));
887 pr_info("VOUVCR: 0x%08x\n", sh_vou_reg_a_read(vou_dev, VOUVCR));
888 pr_info("VOUISR: 0x%08x\n", sh_vou_reg_a_read(vou_dev, VOUISR));
889 pr_info("VOUBCR: 0x%08x\n", sh_vou_reg_a_read(vou_dev, VOUBCR));
890 pr_info("VOUDPR: 0x%08x\n", sh_vou_reg_a_read(vou_dev, VOUDPR));
891 pr_info("VOUDSR: 0x%08x\n", sh_vou_reg_a_read(vou_dev, VOUDSR));
892 pr_info("VOUVPR: 0x%08x\n", sh_vou_reg_a_read(vou_dev, VOUVPR));
893 pr_info("VOUIR: 0x%08x\n", sh_vou_reg_a_read(vou_dev, VOUIR));
894 pr_info("VOUSRR: 0x%08x\n", sh_vou_reg_a_read(vou_dev, VOUSRR));
895 pr_info("VOUMSR: 0x%08x\n", sh_vou_reg_a_read(vou_dev, VOUMSR));
896 pr_info("VOUHIR: 0x%08x\n", sh_vou_reg_a_read(vou_dev, VOUHIR));
897 pr_info("VOUDFR: 0x%08x\n", sh_vou_reg_a_read(vou_dev, VOUDFR));
898 pr_info("VOUAD1R: 0x%08x\n", sh_vou_reg_a_read(vou_dev, VOUAD1R));
899 pr_info("VOUAD2R: 0x%08x\n", sh_vou_reg_a_read(vou_dev, VOUAD2R));
900 pr_info("VOUAIR: 0x%08x\n", sh_vou_reg_a_read(vou_dev, VOUAIR));
901 pr_info("VOUSWR: 0x%08x\n", sh_vou_reg_a_read(vou_dev, VOUSWR));
902 pr_info("VOURCR: 0x%08x\n", sh_vou_reg_a_read(vou_dev, VOURCR));
903 pr_info("VOURPR: 0x%08x\n", sh_vou_reg_a_read(vou_dev, VOURPR));
904 return 0;
905}
906
61fbacc1
HV		 907static int sh_vou_g_selection(struct file *file, void *fh,
908 struct v4l2_selection *sel)
a81fb9b2 909{
fd51625d 910 struct sh_vou_device *vou_dev = video_drvdata(file);
a81fb9b2 911
61fbacc1
HV		 912 if (sel->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
913 return -EINVAL;
914 switch (sel->target) {
915 case V4L2_SEL_TGT_COMPOSE:
916 sel->r = vou_dev->rect;
917 break;
918 case V4L2_SEL_TGT_COMPOSE_DEFAULT:
919 case V4L2_SEL_TGT_COMPOSE_BOUNDS:
920 sel->r.left = 0;
921 sel->r.top = 0;
922 sel->r.width = VOU_MAX_IMAGE_WIDTH;
57af3ad5
HV		 923 if (vou_dev->std & V4L2_STD_525_60)
924 sel->r.height = 480;
925 else
926 sel->r.height = 576;
61fbacc1
HV		 927 break;
928 default:
929 return -EINVAL;
930 }
a81fb9b2
GL		 931 return 0;
932}
933
934/* Assume a dull encoder, do all the work ourselves. */
61fbacc1
HV		 935static int sh_vou_s_selection(struct file *file, void *fh,
936 struct v4l2_selection *sel)
a81fb9b2 937{
61fbacc1 938 struct v4l2_rect *rect = &sel->r;
fd51625d 939 struct sh_vou_device *vou_dev = video_drvdata(file);
10d5509c
HV		 940 struct v4l2_subdev_selection sd_sel = {
941 .which = V4L2_SUBDEV_FORMAT_ACTIVE,
942 .target = V4L2_SEL_TGT_COMPOSE,
943 };
a81fb9b2
GL		 944 struct v4l2_pix_format *pix = &vou_dev->pix;
945 struct sh_vou_geometry geo;
ebf984bb
HV		 946 struct v4l2_subdev_format format = {
947 .which = V4L2_SUBDEV_FORMAT_ACTIVE,
a81fb9b2 948 /* Revisit: is this the correct code? */
ebf984bb
HV		 949 .format.code = MEDIA_BUS_FMT_YUYV8_2X8,
950 .format.field = V4L2_FIELD_INTERLACED,
951 .format.colorspace = V4L2_COLORSPACE_SMPTE170M,
a81fb9b2 952 };
765fe17c 953 unsigned int img_height_max;
a81fb9b2
GL		 954 int ret;
955
61fbacc1
HV		 956 if (sel->type != V4L2_BUF_TYPE_VIDEO_OUTPUT ||
957 sel->target != V4L2_SEL_TGT_COMPOSE)
a81fb9b2
GL		 958 return -EINVAL;
959
57af3ad5
HV		 960 if (vb2_is_busy(&vou_dev->queue))
961 return -EBUSY;
962
765fe17c
GL		 963 if (vou_dev->std & V4L2_STD_525_60)
964 img_height_max = 480;
965 else
966 img_height_max = 576;
967
57af3ad5
HV		 968 v4l_bound_align_image(&rect->width,
969 VOU_MIN_IMAGE_WIDTH, VOU_MAX_IMAGE_WIDTH, 1,
970 &rect->height,
971 VOU_MIN_IMAGE_HEIGHT, img_height_max, 1, 0);
a81fb9b2
GL		 972
973 if (rect->width + rect->left > VOU_MAX_IMAGE_WIDTH)
974 rect->left = VOU_MAX_IMAGE_WIDTH - rect->width;
975
765fe17c
GL		 976 if (rect->height + rect->top > img_height_max)
977 rect->top = img_height_max - rect->height;
a81fb9b2
GL		 978
979 geo.output = *rect;
980 geo.in_width = pix->width;
981 geo.in_height = pix->height;
982
983 /* Configure the encoder one-to-one, position at 0, ignore errors */
10d5509c
HV		 984 sd_sel.r.width = geo.output.width;
985 sd_sel.r.height = geo.output.height;
a81fb9b2 986 /*
10d5509c 987 * We first issue a S_SELECTION, so that the subsequent S_FMT delivers the
a81fb9b2
GL		 988 * final encoder configuration.
989 */
10d5509c
HV		 990 v4l2_device_call_until_err(&vou_dev->v4l2_dev, 0, pad,
991 set_selection, NULL, &sd_sel);
ebf984bb
HV		 992 format.format.width = geo.output.width;
993 format.format.height = geo.output.height;
994 ret = v4l2_device_call_until_err(&vou_dev->v4l2_dev, 0, pad,
995 set_fmt, NULL, &format);
a81fb9b2
GL		 996 /* Must be implemented, so, don't check for -ENOIOCTLCMD */
997 if (ret < 0)
998 return ret;
999
1000 /* Sanity checks */
ebf984bb
HV		 1001 if ((unsigned)format.format.width > VOU_MAX_IMAGE_WIDTH ||
1002 (unsigned)format.format.height > img_height_max ||
1003 format.format.code != MEDIA_BUS_FMT_YUYV8_2X8)
a81fb9b2
GL		 1004 return -EIO;
1005
ebf984bb
HV		 1006 geo.output.width = format.format.width;
1007 geo.output.height = format.format.height;
a81fb9b2
GL		 1008
1009 /*
1010 * No down-scaling. According to the API, current call has precedence:
1011 * http://v4l2spec.bytesex.org/spec/x1904.htm#AEN1954 paragraph two.
1012 */
1013 vou_adjust_input(&geo, vou_dev->std);
1014
1015 /* We tried to preserve output rectangle, but it could have changed */
1016 vou_dev->rect = geo.output;
1017 pix->width = geo.in_width;
1018 pix->height = geo.in_height;
1019
1020 sh_vou_configure_geometry(vou_dev, vou_dev->pix_idx,
1021 geo.scale_idx_h, geo.scale_idx_v);
1022
1023 return 0;
1024}
1025
a81fb9b2
GL		 1026static irqreturn_t sh_vou_isr(int irq, void *dev_id)
1027{
1028 struct sh_vou_device *vou_dev = dev_id;
1029 static unsigned long j;
57af3ad5 1030 struct sh_vou_buffer *vb;
a81fb9b2 1031 static int cnt;
a81fb9b2
GL		 1032 u32 irq_status = sh_vou_reg_a_read(vou_dev, VOUIR), masked;
1033 u32 vou_status = sh_vou_reg_a_read(vou_dev, VOUSTR);
1034
1035 if (!(irq_status & 0x300)) {
1036 if (printk_timed_ratelimit(&j, 500))
1037 dev_warn(vou_dev->v4l2_dev.dev, "IRQ status 0x%x!\n",
1038 irq_status);
1039 return IRQ_NONE;
1040 }
1041
1042 spin_lock(&vou_dev->lock);
57af3ad5 1043 if (!vou_dev->active || list_empty(&vou_dev->buf_list)) {
a81fb9b2
GL		 1044 if (printk_timed_ratelimit(&j, 500))
1045 dev_warn(vou_dev->v4l2_dev.dev,
1046 "IRQ without active buffer: %x!\n", irq_status);
1047 /* Just ack: buf_release will disable further interrupts */
1048 sh_vou_reg_a_set(vou_dev, VOUIR, 0, 0x300);
1049 spin_unlock(&vou_dev->lock);
1050 return IRQ_HANDLED;
1051 }
1052
1053 masked = ~(0x300 & irq_status) & irq_status & 0x30304;
1054 dev_dbg(vou_dev->v4l2_dev.dev,
1055 "IRQ status 0x%x -> 0x%x, VOU status 0x%x, cnt %d\n",
1056 irq_status, masked, vou_status, cnt);
1057
1058 cnt++;
a622cc51 1059 /* side = vou_status & 0x10000; */
a81fb9b2
GL		 1060
1061 /* Clear only set interrupts */
1062 sh_vou_reg_a_write(vou_dev, VOUIR, masked);
1063
1064 vb = vou_dev->active;
57af3ad5
HV		 1065 if (list_is_singular(&vb->list)) {
1066 /* Keep cycling while no next buffer is available */
1067 sh_vou_schedule_next(vou_dev, &vb->vb);
a81fb9b2
GL		 1068 spin_unlock(&vou_dev->lock);
1069 return IRQ_HANDLED;
1070 }
1071
57af3ad5
HV		 1072 list_del(&vb->list);
1073
d6dd645e 1074 vb->vb.vb2_buf.timestamp = ktime_get_ns();
2d700715
JS		 1075 vb->vb.sequence = vou_dev->sequence++;
1076 vb->vb.field = V4L2_FIELD_INTERLACED;
1077 vb2_buffer_done(&vb->vb.vb2_buf, VB2_BUF_STATE_DONE);
57af3ad5
HV		 1078
1079 vou_dev->active = list_entry(vou_dev->buf_list.next,
1080 struct sh_vou_buffer, list);
a81fb9b2 1081
57af3ad5
HV		 1082 if (list_is_singular(&vou_dev->buf_list)) {
1083 /* Keep cycling while no next buffer is available */
1084 sh_vou_schedule_next(vou_dev, &vou_dev->active->vb);
1085 } else {
1086 struct sh_vou_buffer *new = list_entry(vou_dev->active->list.next,
1087 struct sh_vou_buffer, list);
1088 sh_vou_schedule_next(vou_dev, &new->vb);
a81fb9b2
GL		 1089 }
1090
1091 spin_unlock(&vou_dev->lock);
1092
1093 return IRQ_HANDLED;
1094}
1095
1096static int sh_vou_hw_init(struct sh_vou_device *vou_dev)
1097{
1098 struct sh_vou_pdata *pdata = vou_dev->pdata;
1099 u32 voucr = sh_vou_ntsc_mode(pdata->bus_fmt) << 29;
1100 int i = 100;
1101
1102 /* Disable all IRQs */
1103 sh_vou_reg_a_write(vou_dev, VOUIR, 0);
1104
1105 /* Reset VOU interfaces - registers unaffected */
1106 sh_vou_reg_a_write(vou_dev, VOUSRR, 0x101);
1107 while (--i && (sh_vou_reg_a_read(vou_dev, VOUSRR) & 0x101))
1108 udelay(1);
1109
1110 if (!i)
1111 return -ETIMEDOUT;
1112
1113 dev_dbg(vou_dev->v4l2_dev.dev, "Reset took %dus\n", 100 - i);
1114
1115 if (pdata->flags & SH_VOU_PCLK_FALLING)
1116 voucr |= 1 << 28;
1117 if (pdata->flags & SH_VOU_HSYNC_LOW)
1118 voucr |= 1 << 27;
1119 if (pdata->flags & SH_VOU_VSYNC_LOW)
1120 voucr |= 1 << 26;
1121 sh_vou_reg_ab_set(vou_dev, VOUCR, voucr, 0xfc000000);
1122
1123 /* Manual register side switching at first */
1124 sh_vou_reg_a_write(vou_dev, VOURCR, 4);
1125 /* Default - fixed HSYNC length, can be made configurable is required */
1126 sh_vou_reg_ab_write(vou_dev, VOUMSR, 0x800000);
1127
57af3ad5
HV		 1128 sh_vou_set_fmt_vid_out(vou_dev, &vou_dev->pix);
1129
a81fb9b2
GL		 1130 return 0;
1131}
1132
1133/* File operations */
1134static int sh_vou_open(struct file *file)
1135{
fd51625d 1136 struct sh_vou_device *vou_dev = video_drvdata(file);
57af3ad5 1137 int err;
a81fb9b2 1138
57af3ad5 1139 if (mutex_lock_interruptible(&vou_dev->fop_lock))
f135a8a2 1140 return -ERESTARTSYS;
c5f98085 1141
57af3ad5
HV		 1142 err = v4l2_fh_open(file);
1143 if (err)
1144 goto done_open;
1145 if (v4l2_fh_is_singular_file(file) &&
1146 vou_dev->status == SH_VOU_INITIALISING) {
a81fb9b2 1147 /* First open */
fd51625d 1148 pm_runtime_get_sync(vou_dev->v4l2_dev.dev);
57af3ad5
HV		 1149 err = sh_vou_hw_init(vou_dev);
1150 if (err < 0) {
fd51625d 1151 pm_runtime_put(vou_dev->v4l2_dev.dev);
57af3ad5
HV		 1152 v4l2_fh_release(file);
1153 } else {
a81fb9b2 1154 vou_dev->status = SH_VOU_IDLE;
a81fb9b2
GL		 1155 }
1156 }
57af3ad5 1157done_open:
f135a8a2 1158 mutex_unlock(&vou_dev->fop_lock);
57af3ad5 1159 return err;
a81fb9b2
GL		 1160}
1161
1162static int sh_vou_release(struct file *file)
1163{
fd51625d 1164 struct sh_vou_device *vou_dev = video_drvdata(file);
57af3ad5 1165 bool is_last;
a81fb9b2 1166
c5f98085 1167 mutex_lock(&vou_dev->fop_lock);
57af3ad5
HV		 1168 is_last = v4l2_fh_is_singular_file(file);
1169 _vb2_fop_release(file, NULL);
1170 if (is_last) {
a81fb9b2 1171 /* Last close */
57af3ad5 1172 vou_dev->status = SH_VOU_INITIALISING;
a81fb9b2 1173 sh_vou_reg_a_set(vou_dev, VOUER, 0, 0x101);
fd51625d 1174 pm_runtime_put(vou_dev->v4l2_dev.dev);
a81fb9b2 1175 }
c5f98085 1176 mutex_unlock(&vou_dev->fop_lock);
a81fb9b2
GL		 1177 return 0;
1178}
1179
a81fb9b2
GL		 1180/* sh_vou display ioctl operations */
1181static const struct v4l2_ioctl_ops sh_vou_ioctl_ops = {
1182 .vidioc_querycap = sh_vou_querycap,
1183 .vidioc_enum_fmt_vid_out = sh_vou_enum_fmt_vid_out,
1184 .vidioc_g_fmt_vid_out = sh_vou_g_fmt_vid_out,
1185 .vidioc_s_fmt_vid_out = sh_vou_s_fmt_vid_out,
1186 .vidioc_try_fmt_vid_out = sh_vou_try_fmt_vid_out,
57af3ad5
HV		 1187 .vidioc_reqbufs = vb2_ioctl_reqbufs,
1188 .vidioc_create_bufs = vb2_ioctl_create_bufs,
1189 .vidioc_querybuf = vb2_ioctl_querybuf,
1190 .vidioc_qbuf = vb2_ioctl_qbuf,
1191 .vidioc_dqbuf = vb2_ioctl_dqbuf,
1192 .vidioc_prepare_buf = vb2_ioctl_prepare_buf,
1193 .vidioc_streamon = vb2_ioctl_streamon,
1194 .vidioc_streamoff = vb2_ioctl_streamoff,
1195 .vidioc_expbuf = vb2_ioctl_expbuf,
4de00d0e
HV		 1196 .vidioc_g_output = sh_vou_g_output,
1197 .vidioc_s_output = sh_vou_s_output,
1198 .vidioc_enum_output = sh_vou_enum_output,
a81fb9b2
GL		 1199 .vidioc_s_std = sh_vou_s_std,
1200 .vidioc_g_std = sh_vou_g_std,
61fbacc1
HV		 1201 .vidioc_g_selection = sh_vou_g_selection,
1202 .vidioc_s_selection = sh_vou_s_selection,
0b3474f0 1203 .vidioc_log_status = sh_vou_log_status,
a81fb9b2
GL		 1204};
1205
1206static const struct v4l2_file_operations sh_vou_fops = {
1207 .owner = THIS_MODULE,
1208 .open = sh_vou_open,
1209 .release = sh_vou_release,
69756693 1210 .unlocked_ioctl = video_ioctl2,
57af3ad5
HV		 1211 .mmap = vb2_fop_mmap,
1212 .poll = vb2_fop_poll,
1213 .write = vb2_fop_write,
a81fb9b2
GL		 1214};
1215
1216static const struct video_device sh_vou_video_template = {
1217 .name = "sh_vou",
1218 .fops = &sh_vou_fops,
1219 .ioctl_ops = &sh_vou_ioctl_ops,
1220 .tvnorms = V4L2_STD_525_60, /* PAL only supported in 8-bit non-bt656 mode */
954f340f 1221 .vfl_dir = VFL_DIR_TX,
a81fb9b2
GL		 1222};
1223
4c62e976 1224static int sh_vou_probe(struct platform_device *pdev)
a81fb9b2
GL		 1225{
1226 struct sh_vou_pdata *vou_pdata = pdev->dev.platform_data;
1227 struct v4l2_rect *rect;
1228 struct v4l2_pix_format *pix;
1229 struct i2c_adapter *i2c_adap;
1230 struct video_device *vdev;
1231 struct sh_vou_device *vou_dev;
4690271c 1232 struct resource *reg_res;
a81fb9b2 1233 struct v4l2_subdev *subdev;
57af3ad5 1234 struct vb2_queue *q;
a81fb9b2
GL		 1235 int irq, ret;
1236
1237 reg_res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
1238 irq = platform_get_irq(pdev, 0);
1239
1240 if (!vou_pdata || !reg_res || irq <= 0) {
1241 dev_err(&pdev->dev, "Insufficient VOU platform information.\n");
1242 return -ENODEV;
1243 }
1244
4690271c 1245 vou_dev = devm_kzalloc(&pdev->dev, sizeof(*vou_dev), GFP_KERNEL);
a81fb9b2
GL		 1246 if (!vou_dev)
1247 return -ENOMEM;
1248
57af3ad5 1249 INIT_LIST_HEAD(&vou_dev->buf_list);
a81fb9b2 1250 spin_lock_init(&vou_dev->lock);
69756693 1251 mutex_init(&vou_dev->fop_lock);
a81fb9b2 1252 vou_dev->pdata = vou_pdata;
57af3ad5
HV		 1253 vou_dev->status = SH_VOU_INITIALISING;
1254 vou_dev->pix_idx = 1;
a81fb9b2
GL		 1255
1256 rect = &vou_dev->rect;
1257 pix = &vou_dev->pix;
1258
1259 /* Fill in defaults */
5d408108 1260 vou_dev->std = V4L2_STD_NTSC_M;
a81fb9b2
GL		 1261 rect->left = 0;
1262 rect->top = 0;
1263 rect->width = VOU_MAX_IMAGE_WIDTH;
765fe17c 1264 rect->height = 480;
a81fb9b2 1265 pix->width = VOU_MAX_IMAGE_WIDTH;
765fe17c 1266 pix->height = 480;
22df2e7a 1267 pix->pixelformat = V4L2_PIX_FMT_NV16;
57af3ad5 1268 pix->field = V4L2_FIELD_INTERLACED;
5c3edcb2 1269 pix->bytesperline = VOU_MAX_IMAGE_WIDTH;
765fe17c 1270 pix->sizeimage = VOU_MAX_IMAGE_WIDTH * 2 * 480;
a81fb9b2
GL		 1271 pix->colorspace = V4L2_COLORSPACE_SMPTE170M;
1272
4690271c
HV		 1273 vou_dev->base = devm_ioremap_resource(&pdev->dev, reg_res);
1274 if (IS_ERR(vou_dev->base))
1275 return PTR_ERR(vou_dev->base);
a81fb9b2 1276
4690271c 1277 ret = devm_request_irq(&pdev->dev, irq, sh_vou_isr, 0, "vou", vou_dev);
a81fb9b2 1278 if (ret < 0)
4690271c 1279 return ret;
a81fb9b2
GL		 1280
1281 ret = v4l2_device_register(&pdev->dev, &vou_dev->v4l2_dev);
1282 if (ret < 0) {
1283 dev_err(&pdev->dev, "Error registering v4l2 device\n");
4690271c 1284 return ret;
a81fb9b2
GL		 1285 }
1286
d079f99f 1287 vdev = &vou_dev->vdev;
a81fb9b2
GL		 1288 *vdev = sh_vou_video_template;
1289 if (vou_pdata->bus_fmt == SH_VOU_BUS_8BIT)
1290 vdev->tvnorms |= V4L2_STD_PAL;
1291 vdev->v4l2_dev = &vou_dev->v4l2_dev;
d079f99f 1292 vdev->release = video_device_release_empty;
69756693 1293 vdev->lock = &vou_dev->fop_lock;
a81fb9b2 1294
a81fb9b2
GL		 1295 video_set_drvdata(vdev, vou_dev);
1296
57af3ad5
HV		 1297 /* Initialize the vb2 queue */
1298 q = &vou_dev->queue;
1299 q->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
1300 q->io_modes = VB2_MMAP | VB2_DMABUF | VB2_WRITE;
1301 q->drv_priv = vou_dev;
1302 q->buf_struct_size = sizeof(struct sh_vou_buffer);
1303 q->ops = &sh_vou_qops;
1304 q->mem_ops = &vb2_dma_contig_memops;
1305 q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
1306 q->min_buffers_needed = 2;
1307 q->lock = &vou_dev->fop_lock;
1ad70ced 1308 q->dev = &pdev->dev;
57af3ad5
HV		 1309 ret = vb2_queue_init(q);
1310 if (ret)
1ad70ced 1311 goto ei2cgadap;
57af3ad5 1312
57af3ad5
HV		 1313 vdev->queue = q;
1314 INIT_LIST_HEAD(&vou_dev->buf_list);
1315
a81fb9b2
GL		 1316 pm_runtime_enable(&pdev->dev);
1317 pm_runtime_resume(&pdev->dev);
1318
1319 i2c_adap = i2c_get_adapter(vou_pdata->i2c_adap);
1320 if (!i2c_adap) {
1321 ret = -ENODEV;
1322 goto ei2cgadap;
1323 }
1324
1325 ret = sh_vou_hw_init(vou_dev);
1326 if (ret < 0)
1327 goto ereset;
1328
1329 subdev = v4l2_i2c_new_subdev_board(&vou_dev->v4l2_dev, i2c_adap,
9a1f8b34 1330 vou_pdata->board_info, NULL);
a81fb9b2
GL		 1331 if (!subdev) {
1332 ret = -ENOMEM;
1333 goto ei2cnd;
1334 }
1335
1336 ret = video_register_device(vdev, VFL_TYPE_GRABBER, -1);
1337 if (ret < 0)
1338 goto evregdev;
1339
1340 return 0;
1341
1342evregdev:
1343ei2cnd:
1344ereset:
1345 i2c_put_adapter(i2c_adap);
1346ei2cgadap:
a81fb9b2 1347 pm_runtime_disable(&pdev->dev);
a81fb9b2 1348 v4l2_device_unregister(&vou_dev->v4l2_dev);
a81fb9b2
GL		 1349 return ret;
1350}
1351
4c62e976 1352static int sh_vou_remove(struct platform_device *pdev)
a81fb9b2 1353{
a81fb9b2
GL		 1354 struct v4l2_device *v4l2_dev = platform_get_drvdata(pdev);
1355 struct sh_vou_device *vou_dev = container_of(v4l2_dev,
1356 struct sh_vou_device, v4l2_dev);
1357 struct v4l2_subdev *sd = list_entry(v4l2_dev->subdevs.next,
1358 struct v4l2_subdev, list);
1359 struct i2c_client *client = v4l2_get_subdevdata(sd);
a81fb9b2 1360
a81fb9b2 1361 pm_runtime_disable(&pdev->dev);
d079f99f 1362 video_unregister_device(&vou_dev->vdev);
a81fb9b2
GL		 1363 i2c_put_adapter(client->adapter);
1364 v4l2_device_unregister(&vou_dev->v4l2_dev);
a81fb9b2
GL		 1365 return 0;
1366}
1367
1368static struct platform_driver __refdata sh_vou = {
4c62e976 1369 .remove = sh_vou_remove,
a81fb9b2
GL		 1370 .driver = {
1371 .name = "sh-vou",
a81fb9b2
GL		 1372 },
1373};
1374
b3fd87bc 1375module_platform_driver_probe(sh_vou, sh_vou_probe);
a81fb9b2
GL		 1376
1377MODULE_DESCRIPTION("SuperH VOU driver");
1378MODULE_AUTHOR("Guennadi Liakhovetski <g.liakhovetski@gmx.de>");
1379MODULE_LICENSE("GPL v2");
64dc3c1a 1380MODULE_VERSION("0.1.0");
a81fb9b2 1381MODULE_ALIAS("platform:sh-vou");
Linux kernel - Deliverables
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