blob: 871da2a2a91ce68f1091a83a3056c4643668323e [file] [log] [blame]
Guennadi Liakhovetskia81fb9b2010-03-17 11:21:13 -03001/*
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>
Guennadi Liakhovetski3b23db32010-07-08 05:12:11 -030021#include <linux/slab.h>
Guennadi Liakhovetskia81fb9b2010-03-17 11:21:13 -030022#include <linux/videodev2.h>
Paul Gortmaker7a707b82011-07-03 14:03:12 -040023#include <linux/module.h>
Guennadi Liakhovetskia81fb9b2010-03-17 11:21:13 -030024
Mauro Carvalho Chehabd647f0b2015-11-13 19:40:07 -020025#include <media/drv-intf/sh_vou.h>
Guennadi Liakhovetskia81fb9b2010-03-17 11:21:13 -030026#include <media/v4l2-common.h>
27#include <media/v4l2-device.h>
28#include <media/v4l2-ioctl.h>
29#include <media/v4l2-mediabus.h>
Junghak Sung2d700712015-09-22 10:30:30 -030030#include <media/videobuf2-v4l2.h>
Hans Verkuil57af3ad52015-06-07 05:58:05 -030031#include <media/videobuf2-dma-contig.h>
Guennadi Liakhovetskia81fb9b2010-03-17 11:21:13 -030032
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
Hans Verkuil57af3ad52015-06-07 05:58:05 -030061#define VOU_MIN_IMAGE_WIDTH 16
Guennadi Liakhovetskia81fb9b2010-03-17 11:21:13 -030062#define VOU_MAX_IMAGE_WIDTH 720
Hans Verkuil57af3ad52015-06-07 05:58:05 -030063#define VOU_MIN_IMAGE_HEIGHT 16
64
65struct sh_vou_buffer {
Junghak Sung2d700712015-09-22 10:30:30 -030066 struct vb2_v4l2_buffer vb;
Hans Verkuil57af3ad52015-06-07 05:58:05 -030067 struct list_head list;
68};
69
Junghak Sung2d700712015-09-22 10:30:30 -030070static inline struct
71sh_vou_buffer *to_sh_vou_buffer(struct vb2_v4l2_buffer *vb2)
Hans Verkuil57af3ad52015-06-07 05:58:05 -030072{
73 return container_of(vb2, struct sh_vou_buffer, vb);
74}
Guennadi Liakhovetskia81fb9b2010-03-17 11:21:13 -030075
76struct sh_vou_device {
77 struct v4l2_device v4l2_dev;
Lad, Prabhakard079f992015-03-09 19:10:51 -030078 struct video_device vdev;
Guennadi Liakhovetskia81fb9b2010-03-17 11:21:13 -030079 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;
Hans Verkuil57af3ad52015-06-07 05:58:05 -030085 struct list_head buf_list;
Guennadi Liakhovetskia81fb9b2010-03-17 11:21:13 -030086 v4l2_std_id std;
87 int pix_idx;
Hans Verkuil57af3ad52015-06-07 05:58:05 -030088 struct vb2_queue queue;
Hans Verkuil57af3ad52015-06-07 05:58:05 -030089 struct sh_vou_buffer *active;
Guennadi Liakhovetskia81fb9b2010-03-17 11:21:13 -030090 enum sh_vou_status status;
Hans Verkuil57af3ad52015-06-07 05:58:05 -030091 unsigned sequence;
Hans Verkuil69756692010-11-16 18:12:16 -030092 struct mutex fop_lock;
Guennadi Liakhovetskia81fb9b2010-03-17 11:21:13 -030093};
94
Guennadi Liakhovetskia81fb9b2010-03-17 11:21:13 -030095/* 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;
Hans Verkuil5c3edcb2015-06-07 05:58:04 -0300146 unsigned char bpl;
Guennadi Liakhovetskia81fb9b2010-03-17 11:21:13 -0300147 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,
Hans Verkuil5c3edcb2015-06-07 05:58:04 -0300157 .bpl = 1,
Guennadi Liakhovetskia81fb9b2010-03-17 11:21:13 -0300158 .desc = "YVU420 planar",
159 .yf = 0,
160 .rgb = 0,
161 },
162 {
163 .pfmt = V4L2_PIX_FMT_NV16,
164 .bpp = 16,
Hans Verkuil5c3edcb2015-06-07 05:58:04 -0300165 .bpl = 1,
Guennadi Liakhovetskia81fb9b2010-03-17 11:21:13 -0300166 .desc = "YVYU planar",
167 .yf = 1,
168 .rgb = 0,
169 },
170 {
171 .pfmt = V4L2_PIX_FMT_RGB24,
172 .bpp = 24,
Hans Verkuil5c3edcb2015-06-07 05:58:04 -0300173 .bpl = 3,
Guennadi Liakhovetskia81fb9b2010-03-17 11:21:13 -0300174 .desc = "RGB24",
175 .pkf = 2,
176 .rgb = 1,
177 },
178 {
179 .pfmt = V4L2_PIX_FMT_RGB565,
180 .bpp = 16,
Hans Verkuil5c3edcb2015-06-07 05:58:04 -0300181 .bpl = 2,
Guennadi Liakhovetskia81fb9b2010-03-17 11:21:13 -0300182 .desc = "RGB565",
183 .pkf = 3,
184 .rgb = 1,
185 },
186 {
187 .pfmt = V4L2_PIX_FMT_RGB565X,
188 .bpp = 16,
Hans Verkuil5c3edcb2015-06-07 05:58:04 -0300189 .bpl = 2,
Guennadi Liakhovetskia81fb9b2010-03-17 11:21:13 -0300190 .desc = "RGB565 byteswapped",
191 .pkf = 3,
192 .rgb = 1,
193 },
194};
195
196static void sh_vou_schedule_next(struct sh_vou_device *vou_dev,
Junghak Sung2d700712015-09-22 10:30:30 -0300197 struct vb2_v4l2_buffer *vbuf)
Guennadi Liakhovetskia81fb9b2010-03-17 11:21:13 -0300198{
199 dma_addr_t addr1, addr2;
200
Junghak Sung2d700712015-09-22 10:30:30 -0300201 addr1 = vb2_dma_contig_plane_dma_addr(&vbuf->vb2_buf, 0);
Guennadi Liakhovetskia81fb9b2010-03-17 11:21:13 -0300202 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
Hans Verkuil57af3ad52015-06-07 05:58:05 -0300215static void sh_vou_stream_config(struct sh_vou_device *vou_dev)
Guennadi Liakhovetskia81fb9b2010-03-17 11:21:13 -0300216{
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) {
Guennadi Liakhovetskibc1ebd72012-11-26 14:32:48 -0300225 default:
Guennadi Liakhovetskia81fb9b2010-03-17 11:21:13 -0300226 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;
Mauro Carvalho Chehab06eeefe2017-05-18 08:13:28 -0300232 /* fall through */
Guennadi Liakhovetskia81fb9b2010-03-17 11:21:13 -0300233 case V4L2_PIX_FMT_RGB565X:
234 row_coeff = 2;
235 break;
236 case V4L2_PIX_FMT_RGB24:
237 row_coeff = 3;
238 break;
239 }
240
241 sh_vou_reg_a_write(vou_dev, VOUSWR, dataswap);
242 sh_vou_reg_ab_write(vou_dev, VOUAIR, vou_dev->pix.width * row_coeff);
Guennadi Liakhovetskia81fb9b2010-03-17 11:21:13 -0300243}
244
Hans Verkuil69756692010-11-16 18:12:16 -0300245/* Locking: caller holds fop_lock mutex */
Hans Verkuildf9ecb02015-10-28 00:50:37 -0200246static int sh_vou_queue_setup(struct vb2_queue *vq,
Hans Verkuil57af3ad52015-06-07 05:58:05 -0300247 unsigned int *nbuffers, unsigned int *nplanes,
Hans Verkuil36c0f8b2016-04-15 09:15:05 -0300248 unsigned int sizes[], struct device *alloc_devs[])
Guennadi Liakhovetskia81fb9b2010-03-17 11:21:13 -0300249{
Hans Verkuil57af3ad52015-06-07 05:58:05 -0300250 struct sh_vou_device *vou_dev = vb2_get_drv_priv(vq);
Guennadi Liakhovetskia81fb9b2010-03-17 11:21:13 -0300251 struct v4l2_pix_format *pix = &vou_dev->pix;
252 int bytes_per_line = vou_fmt[vou_dev->pix_idx].bpp * pix->width / 8;
Guennadi Liakhovetskia81fb9b2010-03-17 11:21:13 -0300253
Laurent Pinchartd899edd2013-01-03 15:35:57 -0300254 dev_dbg(vou_dev->v4l2_dev.dev, "%s()\n", __func__);
Guennadi Liakhovetskia81fb9b2010-03-17 11:21:13 -0300255
Hans Verkuildf9ecb02015-10-28 00:50:37 -0200256 if (*nplanes)
257 return sizes[0] < pix->height * bytes_per_line ? -EINVAL : 0;
258 *nplanes = 1;
259 sizes[0] = pix->height * bytes_per_line;
Hans Verkuil57af3ad52015-06-07 05:58:05 -0300260 return 0;
261}
Guennadi Liakhovetskia81fb9b2010-03-17 11:21:13 -0300262
Hans Verkuil57af3ad52015-06-07 05:58:05 -0300263static int sh_vou_buf_prepare(struct vb2_buffer *vb)
264{
265 struct sh_vou_device *vou_dev = vb2_get_drv_priv(vb->vb2_queue);
266 struct v4l2_pix_format *pix = &vou_dev->pix;
267 unsigned bytes_per_line = vou_fmt[vou_dev->pix_idx].bpp * pix->width / 8;
268 unsigned size = pix->height * bytes_per_line;
269
270 dev_dbg(vou_dev->v4l2_dev.dev, "%s()\n", __func__);
271
272 if (vb2_plane_size(vb, 0) < size) {
Guennadi Liakhovetskia81fb9b2010-03-17 11:21:13 -0300273 /* User buffer too small */
Hans Verkuil57af3ad52015-06-07 05:58:05 -0300274 dev_warn(vou_dev->v4l2_dev.dev, "buffer too small (%lu < %u)\n",
275 vb2_plane_size(vb, 0), size);
Guennadi Liakhovetskia81fb9b2010-03-17 11:21:13 -0300276 return -EINVAL;
277 }
278
Hans Verkuil57af3ad52015-06-07 05:58:05 -0300279 vb2_set_plane_payload(vb, 0, size);
Guennadi Liakhovetskia81fb9b2010-03-17 11:21:13 -0300280 return 0;
281}
282
Hans Verkuil69756692010-11-16 18:12:16 -0300283/* Locking: caller holds fop_lock mutex and vq->irqlock spinlock */
Hans Verkuil57af3ad52015-06-07 05:58:05 -0300284static void sh_vou_buf_queue(struct vb2_buffer *vb)
Guennadi Liakhovetskia81fb9b2010-03-17 11:21:13 -0300285{
Junghak Sung2d700712015-09-22 10:30:30 -0300286 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
Hans Verkuil57af3ad52015-06-07 05:58:05 -0300287 struct sh_vou_device *vou_dev = vb2_get_drv_priv(vb->vb2_queue);
Junghak Sung2d700712015-09-22 10:30:30 -0300288 struct sh_vou_buffer *shbuf = to_sh_vou_buffer(vbuf);
Guennadi Liakhovetskia81fb9b2010-03-17 11:21:13 -0300289 unsigned long flags;
290
Guennadi Liakhovetskia81fb9b2010-03-17 11:21:13 -0300291 spin_lock_irqsave(&vou_dev->lock, flags);
Hans Verkuil57af3ad52015-06-07 05:58:05 -0300292 list_add_tail(&shbuf->list, &vou_dev->buf_list);
Guennadi Liakhovetskia81fb9b2010-03-17 11:21:13 -0300293 spin_unlock_irqrestore(&vou_dev->lock, flags);
Guennadi Liakhovetskia81fb9b2010-03-17 11:21:13 -0300294}
295
Hans Verkuil57af3ad52015-06-07 05:58:05 -0300296static int sh_vou_start_streaming(struct vb2_queue *vq, unsigned int count)
297{
298 struct sh_vou_device *vou_dev = vb2_get_drv_priv(vq);
299 struct sh_vou_buffer *buf, *node;
300 int ret;
301
302 vou_dev->sequence = 0;
303 ret = v4l2_device_call_until_err(&vou_dev->v4l2_dev, 0,
304 video, s_stream, 1);
305 if (ret < 0 && ret != -ENOIOCTLCMD) {
306 list_for_each_entry_safe(buf, node, &vou_dev->buf_list, list) {
Junghak Sung2d700712015-09-22 10:30:30 -0300307 vb2_buffer_done(&buf->vb.vb2_buf,
308 VB2_BUF_STATE_QUEUED);
Hans Verkuil57af3ad52015-06-07 05:58:05 -0300309 list_del(&buf->list);
310 }
311 vou_dev->active = NULL;
312 return ret;
313 }
314
315 buf = list_entry(vou_dev->buf_list.next, struct sh_vou_buffer, list);
316
317 vou_dev->active = buf;
318
319 /* Start from side A: we use mirror addresses, so, set B */
320 sh_vou_reg_a_write(vou_dev, VOURPR, 1);
321 dev_dbg(vou_dev->v4l2_dev.dev, "%s: first buffer status 0x%x\n",
322 __func__, sh_vou_reg_a_read(vou_dev, VOUSTR));
323 sh_vou_schedule_next(vou_dev, &buf->vb);
324
325 buf = list_entry(buf->list.next, struct sh_vou_buffer, list);
326
327 /* Second buffer - initialise register side B */
328 sh_vou_reg_a_write(vou_dev, VOURPR, 0);
329 sh_vou_schedule_next(vou_dev, &buf->vb);
330
331 /* Register side switching with frame VSYNC */
332 sh_vou_reg_a_write(vou_dev, VOURCR, 5);
333
334 sh_vou_stream_config(vou_dev);
335 /* Enable End-of-Frame (VSYNC) interrupts */
336 sh_vou_reg_a_write(vou_dev, VOUIR, 0x10004);
337
338 /* Two buffers on the queue - activate the hardware */
339 vou_dev->status = SH_VOU_RUNNING;
340 sh_vou_reg_a_write(vou_dev, VOUER, 0x107);
341 return 0;
342}
343
344static void sh_vou_stop_streaming(struct vb2_queue *vq)
345{
346 struct sh_vou_device *vou_dev = vb2_get_drv_priv(vq);
347 struct sh_vou_buffer *buf, *node;
348 unsigned long flags;
349
350 v4l2_device_call_until_err(&vou_dev->v4l2_dev, 0,
351 video, s_stream, 0);
352 /* disable output */
353 sh_vou_reg_a_set(vou_dev, VOUER, 0, 1);
354 /* ...but the current frame will complete */
355 sh_vou_reg_a_set(vou_dev, VOUIR, 0, 0x30000);
356 msleep(50);
357 spin_lock_irqsave(&vou_dev->lock, flags);
358 list_for_each_entry_safe(buf, node, &vou_dev->buf_list, list) {
Junghak Sung2d700712015-09-22 10:30:30 -0300359 vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_ERROR);
Hans Verkuil57af3ad52015-06-07 05:58:05 -0300360 list_del(&buf->list);
361 }
362 vou_dev->active = NULL;
363 spin_unlock_irqrestore(&vou_dev->lock, flags);
364}
365
Julia Lawallb7b361f2016-09-08 20:59:10 -0300366static const struct vb2_ops sh_vou_qops = {
Hans Verkuil57af3ad52015-06-07 05:58:05 -0300367 .queue_setup = sh_vou_queue_setup,
368 .buf_prepare = sh_vou_buf_prepare,
369 .buf_queue = sh_vou_buf_queue,
370 .start_streaming = sh_vou_start_streaming,
371 .stop_streaming = sh_vou_stop_streaming,
372 .wait_prepare = vb2_ops_wait_prepare,
373 .wait_finish = vb2_ops_wait_finish,
Guennadi Liakhovetskia81fb9b2010-03-17 11:21:13 -0300374};
375
376/* Video IOCTLs */
377static int sh_vou_querycap(struct file *file, void *priv,
378 struct v4l2_capability *cap)
379{
Laurent Pinchartd899edd2013-01-03 15:35:57 -0300380 struct sh_vou_device *vou_dev = video_drvdata(file);
Guennadi Liakhovetskia81fb9b2010-03-17 11:21:13 -0300381
Laurent Pinchartd899edd2013-01-03 15:35:57 -0300382 dev_dbg(vou_dev->v4l2_dev.dev, "%s()\n", __func__);
Guennadi Liakhovetskia81fb9b2010-03-17 11:21:13 -0300383
384 strlcpy(cap->card, "SuperH VOU", sizeof(cap->card));
Hans Verkuild8046ee2015-06-07 05:57:57 -0300385 strlcpy(cap->driver, "sh-vou", sizeof(cap->driver));
386 strlcpy(cap->bus_info, "platform:sh-vou", sizeof(cap->bus_info));
Hans Verkuil57af3ad52015-06-07 05:58:05 -0300387 cap->device_caps = V4L2_CAP_VIDEO_OUTPUT | V4L2_CAP_READWRITE |
388 V4L2_CAP_STREAMING;
Hans Verkuila020c742014-11-24 06:37:25 -0300389 cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS;
Guennadi Liakhovetskia81fb9b2010-03-17 11:21:13 -0300390 return 0;
391}
392
393/* Enumerate formats, that the device can accept from the user */
394static int sh_vou_enum_fmt_vid_out(struct file *file, void *priv,
395 struct v4l2_fmtdesc *fmt)
396{
Laurent Pinchartd899edd2013-01-03 15:35:57 -0300397 struct sh_vou_device *vou_dev = video_drvdata(file);
Guennadi Liakhovetskia81fb9b2010-03-17 11:21:13 -0300398
399 if (fmt->index >= ARRAY_SIZE(vou_fmt))
400 return -EINVAL;
401
Laurent Pinchartd899edd2013-01-03 15:35:57 -0300402 dev_dbg(vou_dev->v4l2_dev.dev, "%s()\n", __func__);
Guennadi Liakhovetskia81fb9b2010-03-17 11:21:13 -0300403
404 fmt->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
405 strlcpy(fmt->description, vou_fmt[fmt->index].desc,
406 sizeof(fmt->description));
407 fmt->pixelformat = vou_fmt[fmt->index].pfmt;
408
409 return 0;
410}
411
412static int sh_vou_g_fmt_vid_out(struct file *file, void *priv,
413 struct v4l2_format *fmt)
414{
Laurent Pinchartfd516252013-01-03 15:35:56 -0300415 struct sh_vou_device *vou_dev = video_drvdata(file);
Guennadi Liakhovetskia81fb9b2010-03-17 11:21:13 -0300416
417 dev_dbg(vou_dev->v4l2_dev.dev, "%s()\n", __func__);
418
419 fmt->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
420 fmt->fmt.pix = vou_dev->pix;
421
422 return 0;
423}
424
425static const unsigned char vou_scale_h_num[] = {1, 9, 2, 9, 4};
426static const unsigned char vou_scale_h_den[] = {1, 8, 1, 4, 1};
427static const unsigned char vou_scale_h_fld[] = {0, 2, 1, 3};
428static const unsigned char vou_scale_v_num[] = {1, 2, 4};
429static const unsigned char vou_scale_v_den[] = {1, 1, 1};
430static const unsigned char vou_scale_v_fld[] = {0, 1};
431
432static void sh_vou_configure_geometry(struct sh_vou_device *vou_dev,
433 int pix_idx, int w_idx, int h_idx)
434{
435 struct sh_vou_fmt *fmt = vou_fmt + pix_idx;
Mauro Carvalho Chehaba622cc52014-01-13 11:30:26 -0200436 unsigned int black_left, black_top, width_max,
Guennadi Liakhovetskia81fb9b2010-03-17 11:21:13 -0300437 frame_in_height, frame_out_height, frame_out_top;
438 struct v4l2_rect *rect = &vou_dev->rect;
439 struct v4l2_pix_format *pix = &vou_dev->pix;
440 u32 vouvcr = 0, dsr_h, dsr_v;
441
442 if (vou_dev->std & V4L2_STD_525_60) {
443 width_max = 858;
Mauro Carvalho Chehaba622cc52014-01-13 11:30:26 -0200444 /* height_max = 262; */
Guennadi Liakhovetskia81fb9b2010-03-17 11:21:13 -0300445 } else {
446 width_max = 864;
Mauro Carvalho Chehaba622cc52014-01-13 11:30:26 -0200447 /* height_max = 312; */
Guennadi Liakhovetskia81fb9b2010-03-17 11:21:13 -0300448 }
449
450 frame_in_height = pix->height / 2;
451 frame_out_height = rect->height / 2;
452 frame_out_top = rect->top / 2;
453
454 /*
455 * Cropping scheme: max useful image is 720x480, and the total video
456 * area is 858x525 (NTSC) or 864x625 (PAL). AK8813 / 8814 starts
457 * sampling data beginning with fixed 276th (NTSC) / 288th (PAL) clock,
458 * of which the first 33 / 25 clocks HSYNC must be held active. This
459 * has to be configured in CR[HW]. 1 pixel equals 2 clock periods.
460 * This gives CR[HW] = 16 / 12, VPR[HVP] = 138 / 144, which gives
461 * exactly 858 - 138 = 864 - 144 = 720! We call the out-of-display area,
462 * beyond DSR, specified on the left and top by the VPR register "black
463 * pixels" and out-of-image area (DPR) "background pixels." We fix VPR
464 * at 138 / 144 : 20, because that's the HSYNC timing, that our first
465 * client requires, and that's exactly what leaves us 720 pixels for the
466 * image; we leave VPR[VVP] at default 20 for now, because the client
467 * doesn't seem to have any special requirements for it. Otherwise we
468 * could also set it to max - 240 = 22 / 72. Thus VPR depends only on
469 * the selected standard, and DPR and DSR are selected according to
470 * cropping. Q: how does the client detect the first valid line? Does
471 * HSYNC stay inactive during invalid (black) lines?
472 */
473 black_left = width_max - VOU_MAX_IMAGE_WIDTH;
474 black_top = 20;
475
476 dsr_h = rect->width + rect->left;
477 dsr_v = frame_out_height + frame_out_top;
478
479 dev_dbg(vou_dev->v4l2_dev.dev,
480 "image %ux%u, black %u:%u, offset %u:%u, display %ux%u\n",
481 pix->width, frame_in_height, black_left, black_top,
482 rect->left, frame_out_top, dsr_h, dsr_v);
483
484 /* VOUISR height - half of a frame height in frame mode */
485 sh_vou_reg_ab_write(vou_dev, VOUISR, (pix->width << 16) | frame_in_height);
486 sh_vou_reg_ab_write(vou_dev, VOUVPR, (black_left << 16) | black_top);
487 sh_vou_reg_ab_write(vou_dev, VOUDPR, (rect->left << 16) | frame_out_top);
488 sh_vou_reg_ab_write(vou_dev, VOUDSR, (dsr_h << 16) | dsr_v);
489
490 /*
491 * if necessary, we could set VOUHIR to
492 * max(black_left + dsr_h, width_max) here
493 */
494
495 if (w_idx)
496 vouvcr |= (1 << 15) | (vou_scale_h_fld[w_idx - 1] << 4);
497 if (h_idx)
498 vouvcr |= (1 << 14) | vou_scale_v_fld[h_idx - 1];
499
500 dev_dbg(vou_dev->v4l2_dev.dev, "%s: scaling 0x%x\n", fmt->desc, vouvcr);
501
502 /* To produce a colour bar for testing set bit 23 of VOUVCR */
503 sh_vou_reg_ab_write(vou_dev, VOUVCR, vouvcr);
504 sh_vou_reg_ab_write(vou_dev, VOUDFR,
505 fmt->pkf | (fmt->yf << 8) | (fmt->rgb << 16));
506}
507
508struct sh_vou_geometry {
509 struct v4l2_rect output;
510 unsigned int in_width;
511 unsigned int in_height;
512 int scale_idx_h;
513 int scale_idx_v;
514};
515
516/*
517 * Find input geometry, that we can use to produce output, closest to the
518 * requested rectangle, using VOU scaling
519 */
520static void vou_adjust_input(struct sh_vou_geometry *geo, v4l2_std_id std)
521{
522 /* The compiler cannot know, that best and idx will indeed be set */
Guennadi Liakhovetski765fe172010-07-29 04:11:42 -0300523 unsigned int best_err = UINT_MAX, best = 0, img_height_max;
Guennadi Liakhovetskia81fb9b2010-03-17 11:21:13 -0300524 int i, idx = 0;
525
Guennadi Liakhovetski765fe172010-07-29 04:11:42 -0300526 if (std & V4L2_STD_525_60)
527 img_height_max = 480;
528 else
529 img_height_max = 576;
Guennadi Liakhovetskia81fb9b2010-03-17 11:21:13 -0300530
531 /* Image width must be a multiple of 4 */
Hans Verkuil57af3ad52015-06-07 05:58:05 -0300532 v4l_bound_align_image(&geo->in_width,
533 VOU_MIN_IMAGE_WIDTH, VOU_MAX_IMAGE_WIDTH, 2,
534 &geo->in_height,
535 VOU_MIN_IMAGE_HEIGHT, img_height_max, 1, 0);
Guennadi Liakhovetskia81fb9b2010-03-17 11:21:13 -0300536
537 /* Select scales to come as close as possible to the output image */
538 for (i = ARRAY_SIZE(vou_scale_h_num) - 1; i >= 0; i--) {
539 unsigned int err;
540 unsigned int found = geo->output.width * vou_scale_h_den[i] /
541 vou_scale_h_num[i];
542
543 if (found > VOU_MAX_IMAGE_WIDTH)
544 /* scales increase */
545 break;
546
547 err = abs(found - geo->in_width);
548 if (err < best_err) {
549 best_err = err;
550 idx = i;
551 best = found;
552 }
553 if (!err)
554 break;
555 }
556
557 geo->in_width = best;
558 geo->scale_idx_h = idx;
559
560 best_err = UINT_MAX;
561
562 /* This loop can be replaced with one division */
563 for (i = ARRAY_SIZE(vou_scale_v_num) - 1; i >= 0; i--) {
564 unsigned int err;
565 unsigned int found = geo->output.height * vou_scale_v_den[i] /
566 vou_scale_v_num[i];
567
Guennadi Liakhovetski765fe172010-07-29 04:11:42 -0300568 if (found > img_height_max)
Guennadi Liakhovetskia81fb9b2010-03-17 11:21:13 -0300569 /* scales increase */
570 break;
571
572 err = abs(found - geo->in_height);
573 if (err < best_err) {
574 best_err = err;
575 idx = i;
576 best = found;
577 }
578 if (!err)
579 break;
580 }
581
582 geo->in_height = best;
583 geo->scale_idx_v = idx;
584}
585
586/*
587 * Find output geometry, that we can produce, using VOU scaling, closest to
588 * the requested rectangle
589 */
590static void vou_adjust_output(struct sh_vou_geometry *geo, v4l2_std_id std)
591{
Guennadi Liakhovetskibc1ebd72012-11-26 14:32:48 -0300592 unsigned int best_err = UINT_MAX, best = geo->in_width,
593 width_max, height_max, img_height_max;
Mauro Carvalho Chehab5ac417e2015-06-05 08:07:19 -0300594 int i, idx_h = 0, idx_v = 0;
Guennadi Liakhovetskia81fb9b2010-03-17 11:21:13 -0300595
596 if (std & V4L2_STD_525_60) {
597 width_max = 858;
598 height_max = 262 * 2;
Guennadi Liakhovetski765fe172010-07-29 04:11:42 -0300599 img_height_max = 480;
Guennadi Liakhovetskia81fb9b2010-03-17 11:21:13 -0300600 } else {
601 width_max = 864;
602 height_max = 312 * 2;
Guennadi Liakhovetski765fe172010-07-29 04:11:42 -0300603 img_height_max = 576;
Guennadi Liakhovetskia81fb9b2010-03-17 11:21:13 -0300604 }
605
606 /* Select scales to come as close as possible to the output image */
607 for (i = 0; i < ARRAY_SIZE(vou_scale_h_num); i++) {
608 unsigned int err;
609 unsigned int found = geo->in_width * vou_scale_h_num[i] /
610 vou_scale_h_den[i];
611
612 if (found > VOU_MAX_IMAGE_WIDTH)
613 /* scales increase */
614 break;
615
616 err = abs(found - geo->output.width);
617 if (err < best_err) {
618 best_err = err;
Mauro Carvalho Chehab5ac417e2015-06-05 08:07:19 -0300619 idx_h = i;
Guennadi Liakhovetskia81fb9b2010-03-17 11:21:13 -0300620 best = found;
621 }
622 if (!err)
623 break;
624 }
625
626 geo->output.width = best;
Mauro Carvalho Chehab5ac417e2015-06-05 08:07:19 -0300627 geo->scale_idx_h = idx_h;
Guennadi Liakhovetskia81fb9b2010-03-17 11:21:13 -0300628 if (geo->output.left + best > width_max)
629 geo->output.left = width_max - best;
630
631 pr_debug("%s(): W %u * %u/%u = %u\n", __func__, geo->in_width,
Mauro Carvalho Chehab5ac417e2015-06-05 08:07:19 -0300632 vou_scale_h_num[idx_h], vou_scale_h_den[idx_h], best);
Guennadi Liakhovetskia81fb9b2010-03-17 11:21:13 -0300633
634 best_err = UINT_MAX;
635
636 /* This loop can be replaced with one division */
637 for (i = 0; i < ARRAY_SIZE(vou_scale_v_num); i++) {
638 unsigned int err;
639 unsigned int found = geo->in_height * vou_scale_v_num[i] /
640 vou_scale_v_den[i];
641
Guennadi Liakhovetski765fe172010-07-29 04:11:42 -0300642 if (found > img_height_max)
Guennadi Liakhovetskia81fb9b2010-03-17 11:21:13 -0300643 /* scales increase */
644 break;
645
646 err = abs(found - geo->output.height);
647 if (err < best_err) {
648 best_err = err;
Mauro Carvalho Chehab5ac417e2015-06-05 08:07:19 -0300649 idx_v = i;
Guennadi Liakhovetskia81fb9b2010-03-17 11:21:13 -0300650 best = found;
651 }
652 if (!err)
653 break;
654 }
655
656 geo->output.height = best;
Mauro Carvalho Chehab5ac417e2015-06-05 08:07:19 -0300657 geo->scale_idx_v = idx_v;
Guennadi Liakhovetskia81fb9b2010-03-17 11:21:13 -0300658 if (geo->output.top + best > height_max)
659 geo->output.top = height_max - best;
660
661 pr_debug("%s(): H %u * %u/%u = %u\n", __func__, geo->in_height,
Mauro Carvalho Chehab5ac417e2015-06-05 08:07:19 -0300662 vou_scale_v_num[idx_v], vou_scale_v_den[idx_v], best);
Guennadi Liakhovetskia81fb9b2010-03-17 11:21:13 -0300663}
664
Hans Verkuil66853ec2015-06-07 05:58:03 -0300665static int sh_vou_try_fmt_vid_out(struct file *file, void *priv,
666 struct v4l2_format *fmt)
Guennadi Liakhovetskia81fb9b2010-03-17 11:21:13 -0300667{
Laurent Pinchartfd516252013-01-03 15:35:56 -0300668 struct sh_vou_device *vou_dev = video_drvdata(file);
Guennadi Liakhovetskia81fb9b2010-03-17 11:21:13 -0300669 struct v4l2_pix_format *pix = &fmt->fmt.pix;
Guennadi Liakhovetski765fe172010-07-29 04:11:42 -0300670 unsigned int img_height_max;
Guennadi Liakhovetskia81fb9b2010-03-17 11:21:13 -0300671 int pix_idx;
Guennadi Liakhovetskia81fb9b2010-03-17 11:21:13 -0300672
Hans Verkuil66853ec2015-06-07 05:58:03 -0300673 dev_dbg(vou_dev->v4l2_dev.dev, "%s()\n", __func__);
Guennadi Liakhovetskia81fb9b2010-03-17 11:21:13 -0300674
Hans Verkuil66853ec2015-06-07 05:58:03 -0300675 pix->field = V4L2_FIELD_INTERLACED;
676 pix->colorspace = V4L2_COLORSPACE_SMPTE170M;
677 pix->ycbcr_enc = pix->quantization = 0;
Guennadi Liakhovetskia81fb9b2010-03-17 11:21:13 -0300678
679 for (pix_idx = 0; pix_idx < ARRAY_SIZE(vou_fmt); pix_idx++)
680 if (vou_fmt[pix_idx].pfmt == pix->pixelformat)
681 break;
682
683 if (pix_idx == ARRAY_SIZE(vou_fmt))
684 return -EINVAL;
685
Guennadi Liakhovetski765fe172010-07-29 04:11:42 -0300686 if (vou_dev->std & V4L2_STD_525_60)
687 img_height_max = 480;
688 else
689 img_height_max = 576;
690
Hans Verkuil57af3ad52015-06-07 05:58:05 -0300691 v4l_bound_align_image(&pix->width,
692 VOU_MIN_IMAGE_WIDTH, VOU_MAX_IMAGE_WIDTH, 2,
693 &pix->height,
694 VOU_MIN_IMAGE_HEIGHT, img_height_max, 1, 0);
Hans Verkuil5c3edcb2015-06-07 05:58:04 -0300695 pix->bytesperline = pix->width * vou_fmt[pix_idx].bpl;
696 pix->sizeimage = pix->height * ((pix->width * vou_fmt[pix_idx].bpp) >> 3);
Hans Verkuil66853ec2015-06-07 05:58:03 -0300697
698 return 0;
699}
700
Hans Verkuil57af3ad52015-06-07 05:58:05 -0300701static int sh_vou_set_fmt_vid_out(struct sh_vou_device *vou_dev,
702 struct v4l2_pix_format *pix)
Hans Verkuil66853ec2015-06-07 05:58:03 -0300703{
Hans Verkuil66853ec2015-06-07 05:58:03 -0300704 unsigned int img_height_max;
705 struct sh_vou_geometry geo;
706 struct v4l2_subdev_format format = {
707 .which = V4L2_SUBDEV_FORMAT_ACTIVE,
708 /* Revisit: is this the correct code? */
709 .format.code = MEDIA_BUS_FMT_YUYV8_2X8,
710 .format.field = V4L2_FIELD_INTERLACED,
711 .format.colorspace = V4L2_COLORSPACE_SMPTE170M,
712 };
713 struct v4l2_mbus_framefmt *mbfmt = &format.format;
Hans Verkuil66853ec2015-06-07 05:58:03 -0300714 int pix_idx;
Hans Verkuil57af3ad52015-06-07 05:58:05 -0300715 int ret;
Hans Verkuil66853ec2015-06-07 05:58:03 -0300716
Hans Verkuil57af3ad52015-06-07 05:58:05 -0300717 if (vb2_is_busy(&vou_dev->queue))
718 return -EBUSY;
Hans Verkuil66853ec2015-06-07 05:58:03 -0300719
720 for (pix_idx = 0; pix_idx < ARRAY_SIZE(vou_fmt); pix_idx++)
721 if (vou_fmt[pix_idx].pfmt == pix->pixelformat)
722 break;
Guennadi Liakhovetskia81fb9b2010-03-17 11:21:13 -0300723
724 geo.in_width = pix->width;
725 geo.in_height = pix->height;
726 geo.output = vou_dev->rect;
727
728 vou_adjust_output(&geo, vou_dev->std);
729
Hans Verkuilebf984b2015-04-09 04:05:59 -0300730 mbfmt->width = geo.output.width;
731 mbfmt->height = geo.output.height;
732 ret = v4l2_device_call_until_err(&vou_dev->v4l2_dev, 0, pad,
733 set_fmt, NULL, &format);
Guennadi Liakhovetskia81fb9b2010-03-17 11:21:13 -0300734 /* Must be implemented, so, don't check for -ENOIOCTLCMD */
735 if (ret < 0)
736 return ret;
737
738 dev_dbg(vou_dev->v4l2_dev.dev, "%s(): %ux%u -> %ux%u\n", __func__,
Hans Verkuilebf984b2015-04-09 04:05:59 -0300739 geo.output.width, geo.output.height, mbfmt->width, mbfmt->height);
Guennadi Liakhovetskia81fb9b2010-03-17 11:21:13 -0300740
Hans Verkuil66853ec2015-06-07 05:58:03 -0300741 if (vou_dev->std & V4L2_STD_525_60)
742 img_height_max = 480;
743 else
744 img_height_max = 576;
745
Guennadi Liakhovetskia81fb9b2010-03-17 11:21:13 -0300746 /* Sanity checks */
Hans Verkuilebf984b2015-04-09 04:05:59 -0300747 if ((unsigned)mbfmt->width > VOU_MAX_IMAGE_WIDTH ||
748 (unsigned)mbfmt->height > img_height_max ||
749 mbfmt->code != MEDIA_BUS_FMT_YUYV8_2X8)
Guennadi Liakhovetskia81fb9b2010-03-17 11:21:13 -0300750 return -EIO;
751
Hans Verkuilebf984b2015-04-09 04:05:59 -0300752 if (mbfmt->width != geo.output.width ||
753 mbfmt->height != geo.output.height) {
754 geo.output.width = mbfmt->width;
755 geo.output.height = mbfmt->height;
Guennadi Liakhovetskia81fb9b2010-03-17 11:21:13 -0300756
757 vou_adjust_input(&geo, vou_dev->std);
758 }
759
760 /* We tried to preserve output rectangle, but it could have changed */
761 vou_dev->rect = geo.output;
762 pix->width = geo.in_width;
763 pix->height = geo.in_height;
764
765 dev_dbg(vou_dev->v4l2_dev.dev, "%s(): %ux%u\n", __func__,
766 pix->width, pix->height);
767
768 vou_dev->pix_idx = pix_idx;
769
770 vou_dev->pix = *pix;
771
772 sh_vou_configure_geometry(vou_dev, pix_idx,
773 geo.scale_idx_h, geo.scale_idx_v);
774
775 return 0;
776}
777
Hans Verkuil57af3ad52015-06-07 05:58:05 -0300778static int sh_vou_s_fmt_vid_out(struct file *file, void *priv,
779 struct v4l2_format *fmt)
Guennadi Liakhovetskia81fb9b2010-03-17 11:21:13 -0300780{
Laurent Pinchartd899edd2013-01-03 15:35:57 -0300781 struct sh_vou_device *vou_dev = video_drvdata(file);
Hans Verkuil57af3ad52015-06-07 05:58:05 -0300782 int ret = sh_vou_try_fmt_vid_out(file, priv, fmt);
Guennadi Liakhovetskia81fb9b2010-03-17 11:21:13 -0300783
Hans Verkuil57af3ad52015-06-07 05:58:05 -0300784 if (ret)
Guennadi Liakhovetskia81fb9b2010-03-17 11:21:13 -0300785 return ret;
Hans Verkuil57af3ad52015-06-07 05:58:05 -0300786 return sh_vou_set_fmt_vid_out(vou_dev, &fmt->fmt.pix);
Guennadi Liakhovetskia81fb9b2010-03-17 11:21:13 -0300787}
788
Hans Verkuil4de00d02015-06-07 05:57:59 -0300789static int sh_vou_enum_output(struct file *file, void *fh,
790 struct v4l2_output *a)
791{
792 struct sh_vou_device *vou_dev = video_drvdata(file);
793
794 if (a->index)
795 return -EINVAL;
796 strlcpy(a->name, "Video Out", sizeof(a->name));
797 a->type = V4L2_OUTPUT_TYPE_ANALOG;
798 a->std = vou_dev->vdev.tvnorms;
799 return 0;
800}
801
Mauro Carvalho Chehab2a1e91a2015-07-03 09:12:54 -0300802static int sh_vou_g_output(struct file *file, void *fh, unsigned int *i)
Hans Verkuil4de00d02015-06-07 05:57:59 -0300803{
804 *i = 0;
805 return 0;
806}
807
Mauro Carvalho Chehab2a1e91a2015-07-03 09:12:54 -0300808static int sh_vou_s_output(struct file *file, void *fh, unsigned int i)
Hans Verkuil4de00d02015-06-07 05:57:59 -0300809{
810 return i ? -EINVAL : 0;
811}
812
Guennadi Liakhovetskia81fb9b2010-03-17 11:21:13 -0300813static u32 sh_vou_ntsc_mode(enum sh_vou_bus_fmt bus_fmt)
814{
815 switch (bus_fmt) {
816 default:
Joe Perches56b27d42017-02-17 05:11:35 -0200817 pr_warn("%s(): Invalid bus-format code %d, using default 8-bit\n",
818 __func__, bus_fmt);
Mauro Carvalho Chehab06eeefe2017-05-18 08:13:28 -0300819 /* fall through */
Guennadi Liakhovetskia81fb9b2010-03-17 11:21:13 -0300820 case SH_VOU_BUS_8BIT:
821 return 1;
822 case SH_VOU_BUS_16BIT:
823 return 0;
824 case SH_VOU_BUS_BT656:
825 return 3;
826 }
827}
828
Hans Verkuil314527a2013-03-15 06:10:40 -0300829static int sh_vou_s_std(struct file *file, void *priv, v4l2_std_id std_id)
Guennadi Liakhovetskia81fb9b2010-03-17 11:21:13 -0300830{
Laurent Pinchartfd516252013-01-03 15:35:56 -0300831 struct sh_vou_device *vou_dev = video_drvdata(file);
Guennadi Liakhovetskia81fb9b2010-03-17 11:21:13 -0300832 int ret;
833
Hans Verkuil314527a2013-03-15 06:10:40 -0300834 dev_dbg(vou_dev->v4l2_dev.dev, "%s(): 0x%llx\n", __func__, std_id);
Guennadi Liakhovetskia81fb9b2010-03-17 11:21:13 -0300835
Hans Verkuil57af3ad52015-06-07 05:58:05 -0300836 if (std_id == vou_dev->std)
837 return 0;
838
839 if (vb2_is_busy(&vou_dev->queue))
840 return -EBUSY;
Guennadi Liakhovetskia81fb9b2010-03-17 11:21:13 -0300841
842 ret = v4l2_device_call_until_err(&vou_dev->v4l2_dev, 0, video,
Hans Verkuil314527a2013-03-15 06:10:40 -0300843 s_std_output, std_id);
Guennadi Liakhovetskia81fb9b2010-03-17 11:21:13 -0300844 /* Shall we continue, if the subdev doesn't support .s_std_output()? */
845 if (ret < 0 && ret != -ENOIOCTLCMD)
846 return ret;
847
Hans Verkuil57af3ad52015-06-07 05:58:05 -0300848 vou_dev->rect.top = vou_dev->rect.left = 0;
849 vou_dev->rect.width = VOU_MAX_IMAGE_WIDTH;
850 if (std_id & V4L2_STD_525_60) {
Guennadi Liakhovetskia81fb9b2010-03-17 11:21:13 -0300851 sh_vou_reg_ab_set(vou_dev, VOUCR,
852 sh_vou_ntsc_mode(vou_dev->pdata->bus_fmt) << 29, 7 << 29);
Hans Verkuil57af3ad52015-06-07 05:58:05 -0300853 vou_dev->rect.height = 480;
854 } else {
Guennadi Liakhovetskia81fb9b2010-03-17 11:21:13 -0300855 sh_vou_reg_ab_set(vou_dev, VOUCR, 5 << 29, 7 << 29);
Hans Verkuil57af3ad52015-06-07 05:58:05 -0300856 vou_dev->rect.height = 576;
857 }
Guennadi Liakhovetskia81fb9b2010-03-17 11:21:13 -0300858
Hans Verkuil57af3ad52015-06-07 05:58:05 -0300859 vou_dev->pix.width = vou_dev->rect.width;
860 vou_dev->pix.height = vou_dev->rect.height;
861 vou_dev->pix.bytesperline =
862 vou_dev->pix.width * vou_fmt[vou_dev->pix_idx].bpl;
863 vou_dev->pix.sizeimage = vou_dev->pix.height *
864 ((vou_dev->pix.width * vou_fmt[vou_dev->pix_idx].bpp) >> 3);
Hans Verkuil314527a2013-03-15 06:10:40 -0300865 vou_dev->std = std_id;
Hans Verkuil57af3ad52015-06-07 05:58:05 -0300866 sh_vou_set_fmt_vid_out(vou_dev, &vou_dev->pix);
Guennadi Liakhovetskia81fb9b2010-03-17 11:21:13 -0300867
868 return 0;
869}
870
871static int sh_vou_g_std(struct file *file, void *priv, v4l2_std_id *std)
872{
Laurent Pinchartfd516252013-01-03 15:35:56 -0300873 struct sh_vou_device *vou_dev = video_drvdata(file);
Guennadi Liakhovetskia81fb9b2010-03-17 11:21:13 -0300874
875 dev_dbg(vou_dev->v4l2_dev.dev, "%s()\n", __func__);
876
877 *std = vou_dev->std;
878
879 return 0;
880}
881
Hans Verkuil0b3474f2015-06-08 03:20:15 -0300882static int sh_vou_log_status(struct file *file, void *priv)
883{
884 struct sh_vou_device *vou_dev = video_drvdata(file);
885
886 pr_info("VOUER: 0x%08x\n", sh_vou_reg_a_read(vou_dev, VOUER));
887 pr_info("VOUCR: 0x%08x\n", sh_vou_reg_a_read(vou_dev, VOUCR));
888 pr_info("VOUSTR: 0x%08x\n", sh_vou_reg_a_read(vou_dev, VOUSTR));
889 pr_info("VOUVCR: 0x%08x\n", sh_vou_reg_a_read(vou_dev, VOUVCR));
890 pr_info("VOUISR: 0x%08x\n", sh_vou_reg_a_read(vou_dev, VOUISR));
891 pr_info("VOUBCR: 0x%08x\n", sh_vou_reg_a_read(vou_dev, VOUBCR));
892 pr_info("VOUDPR: 0x%08x\n", sh_vou_reg_a_read(vou_dev, VOUDPR));
893 pr_info("VOUDSR: 0x%08x\n", sh_vou_reg_a_read(vou_dev, VOUDSR));
894 pr_info("VOUVPR: 0x%08x\n", sh_vou_reg_a_read(vou_dev, VOUVPR));
895 pr_info("VOUIR: 0x%08x\n", sh_vou_reg_a_read(vou_dev, VOUIR));
896 pr_info("VOUSRR: 0x%08x\n", sh_vou_reg_a_read(vou_dev, VOUSRR));
897 pr_info("VOUMSR: 0x%08x\n", sh_vou_reg_a_read(vou_dev, VOUMSR));
898 pr_info("VOUHIR: 0x%08x\n", sh_vou_reg_a_read(vou_dev, VOUHIR));
899 pr_info("VOUDFR: 0x%08x\n", sh_vou_reg_a_read(vou_dev, VOUDFR));
900 pr_info("VOUAD1R: 0x%08x\n", sh_vou_reg_a_read(vou_dev, VOUAD1R));
901 pr_info("VOUAD2R: 0x%08x\n", sh_vou_reg_a_read(vou_dev, VOUAD2R));
902 pr_info("VOUAIR: 0x%08x\n", sh_vou_reg_a_read(vou_dev, VOUAIR));
903 pr_info("VOUSWR: 0x%08x\n", sh_vou_reg_a_read(vou_dev, VOUSWR));
904 pr_info("VOURCR: 0x%08x\n", sh_vou_reg_a_read(vou_dev, VOURCR));
905 pr_info("VOURPR: 0x%08x\n", sh_vou_reg_a_read(vou_dev, VOURPR));
906 return 0;
907}
908
Hans Verkuil61fbacc2015-06-07 05:58:01 -0300909static int sh_vou_g_selection(struct file *file, void *fh,
910 struct v4l2_selection *sel)
Guennadi Liakhovetskia81fb9b2010-03-17 11:21:13 -0300911{
Laurent Pinchartfd516252013-01-03 15:35:56 -0300912 struct sh_vou_device *vou_dev = video_drvdata(file);
Guennadi Liakhovetskia81fb9b2010-03-17 11:21:13 -0300913
Hans Verkuil61fbacc2015-06-07 05:58:01 -0300914 if (sel->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
915 return -EINVAL;
916 switch (sel->target) {
917 case V4L2_SEL_TGT_COMPOSE:
918 sel->r = vou_dev->rect;
919 break;
920 case V4L2_SEL_TGT_COMPOSE_DEFAULT:
921 case V4L2_SEL_TGT_COMPOSE_BOUNDS:
922 sel->r.left = 0;
923 sel->r.top = 0;
924 sel->r.width = VOU_MAX_IMAGE_WIDTH;
Hans Verkuil57af3ad52015-06-07 05:58:05 -0300925 if (vou_dev->std & V4L2_STD_525_60)
926 sel->r.height = 480;
927 else
928 sel->r.height = 576;
Hans Verkuil61fbacc2015-06-07 05:58:01 -0300929 break;
930 default:
931 return -EINVAL;
932 }
Guennadi Liakhovetskia81fb9b2010-03-17 11:21:13 -0300933 return 0;
934}
935
936/* Assume a dull encoder, do all the work ourselves. */
Hans Verkuil61fbacc2015-06-07 05:58:01 -0300937static int sh_vou_s_selection(struct file *file, void *fh,
938 struct v4l2_selection *sel)
Guennadi Liakhovetskia81fb9b2010-03-17 11:21:13 -0300939{
Hans Verkuil61fbacc2015-06-07 05:58:01 -0300940 struct v4l2_rect *rect = &sel->r;
Laurent Pinchartfd516252013-01-03 15:35:56 -0300941 struct sh_vou_device *vou_dev = video_drvdata(file);
Hans Verkuil10d5509c2015-12-14 08:25:32 -0200942 struct v4l2_subdev_selection sd_sel = {
943 .which = V4L2_SUBDEV_FORMAT_ACTIVE,
944 .target = V4L2_SEL_TGT_COMPOSE,
945 };
Guennadi Liakhovetskia81fb9b2010-03-17 11:21:13 -0300946 struct v4l2_pix_format *pix = &vou_dev->pix;
947 struct sh_vou_geometry geo;
Hans Verkuilebf984b2015-04-09 04:05:59 -0300948 struct v4l2_subdev_format format = {
949 .which = V4L2_SUBDEV_FORMAT_ACTIVE,
Guennadi Liakhovetskia81fb9b2010-03-17 11:21:13 -0300950 /* Revisit: is this the correct code? */
Hans Verkuilebf984b2015-04-09 04:05:59 -0300951 .format.code = MEDIA_BUS_FMT_YUYV8_2X8,
952 .format.field = V4L2_FIELD_INTERLACED,
953 .format.colorspace = V4L2_COLORSPACE_SMPTE170M,
Guennadi Liakhovetskia81fb9b2010-03-17 11:21:13 -0300954 };
Guennadi Liakhovetski765fe172010-07-29 04:11:42 -0300955 unsigned int img_height_max;
Guennadi Liakhovetskia81fb9b2010-03-17 11:21:13 -0300956 int ret;
957
Hans Verkuil61fbacc2015-06-07 05:58:01 -0300958 if (sel->type != V4L2_BUF_TYPE_VIDEO_OUTPUT ||
959 sel->target != V4L2_SEL_TGT_COMPOSE)
Guennadi Liakhovetskia81fb9b2010-03-17 11:21:13 -0300960 return -EINVAL;
961
Hans Verkuil57af3ad52015-06-07 05:58:05 -0300962 if (vb2_is_busy(&vou_dev->queue))
963 return -EBUSY;
964
Guennadi Liakhovetski765fe172010-07-29 04:11:42 -0300965 if (vou_dev->std & V4L2_STD_525_60)
966 img_height_max = 480;
967 else
968 img_height_max = 576;
969
Hans Verkuil57af3ad52015-06-07 05:58:05 -0300970 v4l_bound_align_image(&rect->width,
971 VOU_MIN_IMAGE_WIDTH, VOU_MAX_IMAGE_WIDTH, 1,
972 &rect->height,
973 VOU_MIN_IMAGE_HEIGHT, img_height_max, 1, 0);
Guennadi Liakhovetskia81fb9b2010-03-17 11:21:13 -0300974
975 if (rect->width + rect->left > VOU_MAX_IMAGE_WIDTH)
976 rect->left = VOU_MAX_IMAGE_WIDTH - rect->width;
977
Guennadi Liakhovetski765fe172010-07-29 04:11:42 -0300978 if (rect->height + rect->top > img_height_max)
979 rect->top = img_height_max - rect->height;
Guennadi Liakhovetskia81fb9b2010-03-17 11:21:13 -0300980
981 geo.output = *rect;
982 geo.in_width = pix->width;
983 geo.in_height = pix->height;
984
985 /* Configure the encoder one-to-one, position at 0, ignore errors */
Hans Verkuil10d5509c2015-12-14 08:25:32 -0200986 sd_sel.r.width = geo.output.width;
987 sd_sel.r.height = geo.output.height;
Guennadi Liakhovetskia81fb9b2010-03-17 11:21:13 -0300988 /*
Hans Verkuil10d5509c2015-12-14 08:25:32 -0200989 * We first issue a S_SELECTION, so that the subsequent S_FMT delivers the
Guennadi Liakhovetskia81fb9b2010-03-17 11:21:13 -0300990 * final encoder configuration.
991 */
Hans Verkuil10d5509c2015-12-14 08:25:32 -0200992 v4l2_device_call_until_err(&vou_dev->v4l2_dev, 0, pad,
993 set_selection, NULL, &sd_sel);
Hans Verkuilebf984b2015-04-09 04:05:59 -0300994 format.format.width = geo.output.width;
995 format.format.height = geo.output.height;
996 ret = v4l2_device_call_until_err(&vou_dev->v4l2_dev, 0, pad,
997 set_fmt, NULL, &format);
Guennadi Liakhovetskia81fb9b2010-03-17 11:21:13 -0300998 /* Must be implemented, so, don't check for -ENOIOCTLCMD */
999 if (ret < 0)
1000 return ret;
1001
1002 /* Sanity checks */
Hans Verkuilebf984b2015-04-09 04:05:59 -03001003 if ((unsigned)format.format.width > VOU_MAX_IMAGE_WIDTH ||
1004 (unsigned)format.format.height > img_height_max ||
1005 format.format.code != MEDIA_BUS_FMT_YUYV8_2X8)
Guennadi Liakhovetskia81fb9b2010-03-17 11:21:13 -03001006 return -EIO;
1007
Hans Verkuilebf984b2015-04-09 04:05:59 -03001008 geo.output.width = format.format.width;
1009 geo.output.height = format.format.height;
Guennadi Liakhovetskia81fb9b2010-03-17 11:21:13 -03001010
1011 /*
1012 * No down-scaling. According to the API, current call has precedence:
1013 * http://v4l2spec.bytesex.org/spec/x1904.htm#AEN1954 paragraph two.
1014 */
1015 vou_adjust_input(&geo, vou_dev->std);
1016
1017 /* We tried to preserve output rectangle, but it could have changed */
1018 vou_dev->rect = geo.output;
1019 pix->width = geo.in_width;
1020 pix->height = geo.in_height;
1021
1022 sh_vou_configure_geometry(vou_dev, vou_dev->pix_idx,
1023 geo.scale_idx_h, geo.scale_idx_v);
1024
1025 return 0;
1026}
1027
Guennadi Liakhovetskia81fb9b2010-03-17 11:21:13 -03001028static irqreturn_t sh_vou_isr(int irq, void *dev_id)
1029{
1030 struct sh_vou_device *vou_dev = dev_id;
1031 static unsigned long j;
Hans Verkuil57af3ad52015-06-07 05:58:05 -03001032 struct sh_vou_buffer *vb;
Guennadi Liakhovetskia81fb9b2010-03-17 11:21:13 -03001033 static int cnt;
Guennadi Liakhovetskia81fb9b2010-03-17 11:21:13 -03001034 u32 irq_status = sh_vou_reg_a_read(vou_dev, VOUIR), masked;
1035 u32 vou_status = sh_vou_reg_a_read(vou_dev, VOUSTR);
1036
1037 if (!(irq_status & 0x300)) {
1038 if (printk_timed_ratelimit(&j, 500))
1039 dev_warn(vou_dev->v4l2_dev.dev, "IRQ status 0x%x!\n",
1040 irq_status);
1041 return IRQ_NONE;
1042 }
1043
1044 spin_lock(&vou_dev->lock);
Hans Verkuil57af3ad52015-06-07 05:58:05 -03001045 if (!vou_dev->active || list_empty(&vou_dev->buf_list)) {
Guennadi Liakhovetskia81fb9b2010-03-17 11:21:13 -03001046 if (printk_timed_ratelimit(&j, 500))
1047 dev_warn(vou_dev->v4l2_dev.dev,
1048 "IRQ without active buffer: %x!\n", irq_status);
1049 /* Just ack: buf_release will disable further interrupts */
1050 sh_vou_reg_a_set(vou_dev, VOUIR, 0, 0x300);
1051 spin_unlock(&vou_dev->lock);
1052 return IRQ_HANDLED;
1053 }
1054
1055 masked = ~(0x300 & irq_status) & irq_status & 0x30304;
1056 dev_dbg(vou_dev->v4l2_dev.dev,
1057 "IRQ status 0x%x -> 0x%x, VOU status 0x%x, cnt %d\n",
1058 irq_status, masked, vou_status, cnt);
1059
1060 cnt++;
Mauro Carvalho Chehaba622cc52014-01-13 11:30:26 -02001061 /* side = vou_status & 0x10000; */
Guennadi Liakhovetskia81fb9b2010-03-17 11:21:13 -03001062
1063 /* Clear only set interrupts */
1064 sh_vou_reg_a_write(vou_dev, VOUIR, masked);
1065
1066 vb = vou_dev->active;
Hans Verkuil57af3ad52015-06-07 05:58:05 -03001067 if (list_is_singular(&vb->list)) {
1068 /* Keep cycling while no next buffer is available */
1069 sh_vou_schedule_next(vou_dev, &vb->vb);
Guennadi Liakhovetskia81fb9b2010-03-17 11:21:13 -03001070 spin_unlock(&vou_dev->lock);
1071 return IRQ_HANDLED;
1072 }
1073
Hans Verkuil57af3ad52015-06-07 05:58:05 -03001074 list_del(&vb->list);
Guennadi Liakhovetskia81fb9b2010-03-17 11:21:13 -03001075
Junghak Sungd6dd6452015-11-03 08:16:37 -02001076 vb->vb.vb2_buf.timestamp = ktime_get_ns();
Junghak Sung2d700712015-09-22 10:30:30 -03001077 vb->vb.sequence = vou_dev->sequence++;
1078 vb->vb.field = V4L2_FIELD_INTERLACED;
1079 vb2_buffer_done(&vb->vb.vb2_buf, VB2_BUF_STATE_DONE);
Hans Verkuil57af3ad52015-06-07 05:58:05 -03001080
1081 vou_dev->active = list_entry(vou_dev->buf_list.next,
1082 struct sh_vou_buffer, list);
1083
1084 if (list_is_singular(&vou_dev->buf_list)) {
1085 /* Keep cycling while no next buffer is available */
1086 sh_vou_schedule_next(vou_dev, &vou_dev->active->vb);
1087 } else {
1088 struct sh_vou_buffer *new = list_entry(vou_dev->active->list.next,
1089 struct sh_vou_buffer, list);
1090 sh_vou_schedule_next(vou_dev, &new->vb);
Guennadi Liakhovetskia81fb9b2010-03-17 11:21:13 -03001091 }
1092
1093 spin_unlock(&vou_dev->lock);
1094
1095 return IRQ_HANDLED;
1096}
1097
1098static int sh_vou_hw_init(struct sh_vou_device *vou_dev)
1099{
1100 struct sh_vou_pdata *pdata = vou_dev->pdata;
1101 u32 voucr = sh_vou_ntsc_mode(pdata->bus_fmt) << 29;
1102 int i = 100;
1103
1104 /* Disable all IRQs */
1105 sh_vou_reg_a_write(vou_dev, VOUIR, 0);
1106
1107 /* Reset VOU interfaces - registers unaffected */
1108 sh_vou_reg_a_write(vou_dev, VOUSRR, 0x101);
1109 while (--i && (sh_vou_reg_a_read(vou_dev, VOUSRR) & 0x101))
1110 udelay(1);
1111
1112 if (!i)
1113 return -ETIMEDOUT;
1114
1115 dev_dbg(vou_dev->v4l2_dev.dev, "Reset took %dus\n", 100 - i);
1116
1117 if (pdata->flags & SH_VOU_PCLK_FALLING)
1118 voucr |= 1 << 28;
1119 if (pdata->flags & SH_VOU_HSYNC_LOW)
1120 voucr |= 1 << 27;
1121 if (pdata->flags & SH_VOU_VSYNC_LOW)
1122 voucr |= 1 << 26;
1123 sh_vou_reg_ab_set(vou_dev, VOUCR, voucr, 0xfc000000);
1124
1125 /* Manual register side switching at first */
1126 sh_vou_reg_a_write(vou_dev, VOURCR, 4);
1127 /* Default - fixed HSYNC length, can be made configurable is required */
1128 sh_vou_reg_ab_write(vou_dev, VOUMSR, 0x800000);
1129
Hans Verkuil57af3ad52015-06-07 05:58:05 -03001130 sh_vou_set_fmt_vid_out(vou_dev, &vou_dev->pix);
1131
Guennadi Liakhovetskia81fb9b2010-03-17 11:21:13 -03001132 return 0;
1133}
1134
1135/* File operations */
1136static int sh_vou_open(struct file *file)
1137{
Laurent Pinchartfd516252013-01-03 15:35:56 -03001138 struct sh_vou_device *vou_dev = video_drvdata(file);
Hans Verkuil57af3ad52015-06-07 05:58:05 -03001139 int err;
Guennadi Liakhovetskia81fb9b2010-03-17 11:21:13 -03001140
Hans Verkuil57af3ad52015-06-07 05:58:05 -03001141 if (mutex_lock_interruptible(&vou_dev->fop_lock))
Hans Verkuilf135a8a2012-06-24 06:33:26 -03001142 return -ERESTARTSYS;
Hans Verkuilc5f98082015-06-07 05:57:58 -03001143
Hans Verkuil57af3ad52015-06-07 05:58:05 -03001144 err = v4l2_fh_open(file);
1145 if (err)
1146 goto done_open;
1147 if (v4l2_fh_is_singular_file(file) &&
1148 vou_dev->status == SH_VOU_INITIALISING) {
Guennadi Liakhovetskia81fb9b2010-03-17 11:21:13 -03001149 /* First open */
Laurent Pinchartfd516252013-01-03 15:35:56 -03001150 pm_runtime_get_sync(vou_dev->v4l2_dev.dev);
Hans Verkuil57af3ad52015-06-07 05:58:05 -03001151 err = sh_vou_hw_init(vou_dev);
1152 if (err < 0) {
Laurent Pinchartfd516252013-01-03 15:35:56 -03001153 pm_runtime_put(vou_dev->v4l2_dev.dev);
Hans Verkuil57af3ad52015-06-07 05:58:05 -03001154 v4l2_fh_release(file);
1155 } else {
Guennadi Liakhovetskia81fb9b2010-03-17 11:21:13 -03001156 vou_dev->status = SH_VOU_IDLE;
Guennadi Liakhovetskia81fb9b2010-03-17 11:21:13 -03001157 }
1158 }
Hans Verkuil57af3ad52015-06-07 05:58:05 -03001159done_open:
Hans Verkuilf135a8a2012-06-24 06:33:26 -03001160 mutex_unlock(&vou_dev->fop_lock);
Hans Verkuil57af3ad52015-06-07 05:58:05 -03001161 return err;
Guennadi Liakhovetskia81fb9b2010-03-17 11:21:13 -03001162}
1163
1164static int sh_vou_release(struct file *file)
1165{
Laurent Pinchartfd516252013-01-03 15:35:56 -03001166 struct sh_vou_device *vou_dev = video_drvdata(file);
Hans Verkuil57af3ad52015-06-07 05:58:05 -03001167 bool is_last;
Guennadi Liakhovetskia81fb9b2010-03-17 11:21:13 -03001168
Hans Verkuilc5f98082015-06-07 05:57:58 -03001169 mutex_lock(&vou_dev->fop_lock);
Hans Verkuil57af3ad52015-06-07 05:58:05 -03001170 is_last = v4l2_fh_is_singular_file(file);
1171 _vb2_fop_release(file, NULL);
1172 if (is_last) {
Guennadi Liakhovetskia81fb9b2010-03-17 11:21:13 -03001173 /* Last close */
Hans Verkuil57af3ad52015-06-07 05:58:05 -03001174 vou_dev->status = SH_VOU_INITIALISING;
Guennadi Liakhovetskia81fb9b2010-03-17 11:21:13 -03001175 sh_vou_reg_a_set(vou_dev, VOUER, 0, 0x101);
Laurent Pinchartfd516252013-01-03 15:35:56 -03001176 pm_runtime_put(vou_dev->v4l2_dev.dev);
Guennadi Liakhovetskia81fb9b2010-03-17 11:21:13 -03001177 }
Hans Verkuilc5f98082015-06-07 05:57:58 -03001178 mutex_unlock(&vou_dev->fop_lock);
Guennadi Liakhovetskia81fb9b2010-03-17 11:21:13 -03001179 return 0;
1180}
1181
Guennadi Liakhovetskia81fb9b2010-03-17 11:21:13 -03001182/* sh_vou display ioctl operations */
1183static const struct v4l2_ioctl_ops sh_vou_ioctl_ops = {
1184 .vidioc_querycap = sh_vou_querycap,
1185 .vidioc_enum_fmt_vid_out = sh_vou_enum_fmt_vid_out,
1186 .vidioc_g_fmt_vid_out = sh_vou_g_fmt_vid_out,
1187 .vidioc_s_fmt_vid_out = sh_vou_s_fmt_vid_out,
1188 .vidioc_try_fmt_vid_out = sh_vou_try_fmt_vid_out,
Hans Verkuil57af3ad52015-06-07 05:58:05 -03001189 .vidioc_reqbufs = vb2_ioctl_reqbufs,
1190 .vidioc_create_bufs = vb2_ioctl_create_bufs,
1191 .vidioc_querybuf = vb2_ioctl_querybuf,
1192 .vidioc_qbuf = vb2_ioctl_qbuf,
1193 .vidioc_dqbuf = vb2_ioctl_dqbuf,
1194 .vidioc_prepare_buf = vb2_ioctl_prepare_buf,
1195 .vidioc_streamon = vb2_ioctl_streamon,
1196 .vidioc_streamoff = vb2_ioctl_streamoff,
1197 .vidioc_expbuf = vb2_ioctl_expbuf,
Hans Verkuil4de00d02015-06-07 05:57:59 -03001198 .vidioc_g_output = sh_vou_g_output,
1199 .vidioc_s_output = sh_vou_s_output,
1200 .vidioc_enum_output = sh_vou_enum_output,
Guennadi Liakhovetskia81fb9b2010-03-17 11:21:13 -03001201 .vidioc_s_std = sh_vou_s_std,
1202 .vidioc_g_std = sh_vou_g_std,
Hans Verkuil61fbacc2015-06-07 05:58:01 -03001203 .vidioc_g_selection = sh_vou_g_selection,
1204 .vidioc_s_selection = sh_vou_s_selection,
Hans Verkuil0b3474f2015-06-08 03:20:15 -03001205 .vidioc_log_status = sh_vou_log_status,
Guennadi Liakhovetskia81fb9b2010-03-17 11:21:13 -03001206};
1207
1208static const struct v4l2_file_operations sh_vou_fops = {
1209 .owner = THIS_MODULE,
1210 .open = sh_vou_open,
1211 .release = sh_vou_release,
Hans Verkuil69756692010-11-16 18:12:16 -03001212 .unlocked_ioctl = video_ioctl2,
Hans Verkuil57af3ad52015-06-07 05:58:05 -03001213 .mmap = vb2_fop_mmap,
1214 .poll = vb2_fop_poll,
1215 .write = vb2_fop_write,
Guennadi Liakhovetskia81fb9b2010-03-17 11:21:13 -03001216};
1217
1218static const struct video_device sh_vou_video_template = {
1219 .name = "sh_vou",
1220 .fops = &sh_vou_fops,
1221 .ioctl_ops = &sh_vou_ioctl_ops,
1222 .tvnorms = V4L2_STD_525_60, /* PAL only supported in 8-bit non-bt656 mode */
Hans Verkuil954f3402012-09-05 06:05:50 -03001223 .vfl_dir = VFL_DIR_TX,
Guennadi Liakhovetskia81fb9b2010-03-17 11:21:13 -03001224};
1225
Greg Kroah-Hartman4c62e972012-12-21 13:17:53 -08001226static int sh_vou_probe(struct platform_device *pdev)
Guennadi Liakhovetskia81fb9b2010-03-17 11:21:13 -03001227{
1228 struct sh_vou_pdata *vou_pdata = pdev->dev.platform_data;
1229 struct v4l2_rect *rect;
1230 struct v4l2_pix_format *pix;
1231 struct i2c_adapter *i2c_adap;
1232 struct video_device *vdev;
1233 struct sh_vou_device *vou_dev;
Hans Verkuil46902712015-06-07 05:57:56 -03001234 struct resource *reg_res;
Guennadi Liakhovetskia81fb9b2010-03-17 11:21:13 -03001235 struct v4l2_subdev *subdev;
Hans Verkuil57af3ad52015-06-07 05:58:05 -03001236 struct vb2_queue *q;
Guennadi Liakhovetskia81fb9b2010-03-17 11:21:13 -03001237 int irq, ret;
1238
1239 reg_res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
1240 irq = platform_get_irq(pdev, 0);
1241
1242 if (!vou_pdata || !reg_res || irq <= 0) {
1243 dev_err(&pdev->dev, "Insufficient VOU platform information.\n");
1244 return -ENODEV;
1245 }
1246
Hans Verkuil46902712015-06-07 05:57:56 -03001247 vou_dev = devm_kzalloc(&pdev->dev, sizeof(*vou_dev), GFP_KERNEL);
Guennadi Liakhovetskia81fb9b2010-03-17 11:21:13 -03001248 if (!vou_dev)
1249 return -ENOMEM;
1250
Hans Verkuil57af3ad52015-06-07 05:58:05 -03001251 INIT_LIST_HEAD(&vou_dev->buf_list);
Guennadi Liakhovetskia81fb9b2010-03-17 11:21:13 -03001252 spin_lock_init(&vou_dev->lock);
Hans Verkuil69756692010-11-16 18:12:16 -03001253 mutex_init(&vou_dev->fop_lock);
Guennadi Liakhovetskia81fb9b2010-03-17 11:21:13 -03001254 vou_dev->pdata = vou_pdata;
Hans Verkuil57af3ad52015-06-07 05:58:05 -03001255 vou_dev->status = SH_VOU_INITIALISING;
1256 vou_dev->pix_idx = 1;
Guennadi Liakhovetskia81fb9b2010-03-17 11:21:13 -03001257
1258 rect = &vou_dev->rect;
1259 pix = &vou_dev->pix;
1260
1261 /* Fill in defaults */
Hans Verkuil5d408102013-06-03 05:36:40 -03001262 vou_dev->std = V4L2_STD_NTSC_M;
Guennadi Liakhovetskia81fb9b2010-03-17 11:21:13 -03001263 rect->left = 0;
1264 rect->top = 0;
1265 rect->width = VOU_MAX_IMAGE_WIDTH;
Guennadi Liakhovetski765fe172010-07-29 04:11:42 -03001266 rect->height = 480;
Guennadi Liakhovetskia81fb9b2010-03-17 11:21:13 -03001267 pix->width = VOU_MAX_IMAGE_WIDTH;
Guennadi Liakhovetski765fe172010-07-29 04:11:42 -03001268 pix->height = 480;
Hans Verkuil22df2e72015-06-07 05:58:00 -03001269 pix->pixelformat = V4L2_PIX_FMT_NV16;
Hans Verkuil57af3ad52015-06-07 05:58:05 -03001270 pix->field = V4L2_FIELD_INTERLACED;
Hans Verkuil5c3edcb2015-06-07 05:58:04 -03001271 pix->bytesperline = VOU_MAX_IMAGE_WIDTH;
Guennadi Liakhovetski765fe172010-07-29 04:11:42 -03001272 pix->sizeimage = VOU_MAX_IMAGE_WIDTH * 2 * 480;
Guennadi Liakhovetskia81fb9b2010-03-17 11:21:13 -03001273 pix->colorspace = V4L2_COLORSPACE_SMPTE170M;
1274
Hans Verkuil46902712015-06-07 05:57:56 -03001275 vou_dev->base = devm_ioremap_resource(&pdev->dev, reg_res);
1276 if (IS_ERR(vou_dev->base))
1277 return PTR_ERR(vou_dev->base);
Guennadi Liakhovetskia81fb9b2010-03-17 11:21:13 -03001278
Hans Verkuil46902712015-06-07 05:57:56 -03001279 ret = devm_request_irq(&pdev->dev, irq, sh_vou_isr, 0, "vou", vou_dev);
Guennadi Liakhovetskia81fb9b2010-03-17 11:21:13 -03001280 if (ret < 0)
Hans Verkuil46902712015-06-07 05:57:56 -03001281 return ret;
Guennadi Liakhovetskia81fb9b2010-03-17 11:21:13 -03001282
1283 ret = v4l2_device_register(&pdev->dev, &vou_dev->v4l2_dev);
1284 if (ret < 0) {
1285 dev_err(&pdev->dev, "Error registering v4l2 device\n");
Hans Verkuil46902712015-06-07 05:57:56 -03001286 return ret;
Guennadi Liakhovetskia81fb9b2010-03-17 11:21:13 -03001287 }
1288
Lad, Prabhakard079f992015-03-09 19:10:51 -03001289 vdev = &vou_dev->vdev;
Guennadi Liakhovetskia81fb9b2010-03-17 11:21:13 -03001290 *vdev = sh_vou_video_template;
1291 if (vou_pdata->bus_fmt == SH_VOU_BUS_8BIT)
1292 vdev->tvnorms |= V4L2_STD_PAL;
1293 vdev->v4l2_dev = &vou_dev->v4l2_dev;
Lad, Prabhakard079f992015-03-09 19:10:51 -03001294 vdev->release = video_device_release_empty;
Hans Verkuil69756692010-11-16 18:12:16 -03001295 vdev->lock = &vou_dev->fop_lock;
Guennadi Liakhovetskia81fb9b2010-03-17 11:21:13 -03001296
Guennadi Liakhovetskia81fb9b2010-03-17 11:21:13 -03001297 video_set_drvdata(vdev, vou_dev);
1298
Hans Verkuil57af3ad52015-06-07 05:58:05 -03001299 /* Initialize the vb2 queue */
1300 q = &vou_dev->queue;
1301 q->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
1302 q->io_modes = VB2_MMAP | VB2_DMABUF | VB2_WRITE;
1303 q->drv_priv = vou_dev;
1304 q->buf_struct_size = sizeof(struct sh_vou_buffer);
1305 q->ops = &sh_vou_qops;
1306 q->mem_ops = &vb2_dma_contig_memops;
1307 q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
1308 q->min_buffers_needed = 2;
1309 q->lock = &vou_dev->fop_lock;
Hans Verkuil1ad70ce2016-02-15 13:41:51 -02001310 q->dev = &pdev->dev;
Hans Verkuil57af3ad52015-06-07 05:58:05 -03001311 ret = vb2_queue_init(q);
1312 if (ret)
Hans Verkuil1ad70ce2016-02-15 13:41:51 -02001313 goto ei2cgadap;
Hans Verkuil57af3ad52015-06-07 05:58:05 -03001314
Hans Verkuil57af3ad52015-06-07 05:58:05 -03001315 vdev->queue = q;
1316 INIT_LIST_HEAD(&vou_dev->buf_list);
1317
Guennadi Liakhovetskia81fb9b2010-03-17 11:21:13 -03001318 pm_runtime_enable(&pdev->dev);
1319 pm_runtime_resume(&pdev->dev);
1320
1321 i2c_adap = i2c_get_adapter(vou_pdata->i2c_adap);
1322 if (!i2c_adap) {
1323 ret = -ENODEV;
1324 goto ei2cgadap;
1325 }
1326
1327 ret = sh_vou_hw_init(vou_dev);
1328 if (ret < 0)
1329 goto ereset;
1330
1331 subdev = v4l2_i2c_new_subdev_board(&vou_dev->v4l2_dev, i2c_adap,
Laurent Pinchart9a1f8b32010-09-24 10:16:44 -03001332 vou_pdata->board_info, NULL);
Guennadi Liakhovetskia81fb9b2010-03-17 11:21:13 -03001333 if (!subdev) {
1334 ret = -ENOMEM;
1335 goto ei2cnd;
1336 }
1337
1338 ret = video_register_device(vdev, VFL_TYPE_GRABBER, -1);
1339 if (ret < 0)
1340 goto evregdev;
1341
1342 return 0;
1343
1344evregdev:
1345ei2cnd:
1346ereset:
1347 i2c_put_adapter(i2c_adap);
1348ei2cgadap:
Guennadi Liakhovetskia81fb9b2010-03-17 11:21:13 -03001349 pm_runtime_disable(&pdev->dev);
Guennadi Liakhovetskia81fb9b2010-03-17 11:21:13 -03001350 v4l2_device_unregister(&vou_dev->v4l2_dev);
Guennadi Liakhovetskia81fb9b2010-03-17 11:21:13 -03001351 return ret;
1352}
1353
Greg Kroah-Hartman4c62e972012-12-21 13:17:53 -08001354static int sh_vou_remove(struct platform_device *pdev)
Guennadi Liakhovetskia81fb9b2010-03-17 11:21:13 -03001355{
Guennadi Liakhovetskia81fb9b2010-03-17 11:21:13 -03001356 struct v4l2_device *v4l2_dev = platform_get_drvdata(pdev);
1357 struct sh_vou_device *vou_dev = container_of(v4l2_dev,
1358 struct sh_vou_device, v4l2_dev);
1359 struct v4l2_subdev *sd = list_entry(v4l2_dev->subdevs.next,
1360 struct v4l2_subdev, list);
1361 struct i2c_client *client = v4l2_get_subdevdata(sd);
Guennadi Liakhovetskia81fb9b2010-03-17 11:21:13 -03001362
Guennadi Liakhovetskia81fb9b2010-03-17 11:21:13 -03001363 pm_runtime_disable(&pdev->dev);
Lad, Prabhakard079f992015-03-09 19:10:51 -03001364 video_unregister_device(&vou_dev->vdev);
Guennadi Liakhovetskia81fb9b2010-03-17 11:21:13 -03001365 i2c_put_adapter(client->adapter);
1366 v4l2_device_unregister(&vou_dev->v4l2_dev);
Guennadi Liakhovetskia81fb9b2010-03-17 11:21:13 -03001367 return 0;
1368}
1369
1370static struct platform_driver __refdata sh_vou = {
Greg Kroah-Hartman4c62e972012-12-21 13:17:53 -08001371 .remove = sh_vou_remove,
Guennadi Liakhovetskia81fb9b2010-03-17 11:21:13 -03001372 .driver = {
1373 .name = "sh-vou",
Guennadi Liakhovetskia81fb9b2010-03-17 11:21:13 -03001374 },
1375};
1376
Sachin Kamatb3fd87b2013-03-05 01:53:37 -03001377module_platform_driver_probe(sh_vou, sh_vou_probe);
Guennadi Liakhovetskia81fb9b2010-03-17 11:21:13 -03001378
1379MODULE_DESCRIPTION("SuperH VOU driver");
1380MODULE_AUTHOR("Guennadi Liakhovetski <g.liakhovetski@gmx.de>");
1381MODULE_LICENSE("GPL v2");
Mauro Carvalho Chehab64dc3c12011-06-25 11:28:37 -03001382MODULE_VERSION("0.1.0");
Guennadi Liakhovetskia81fb9b2010-03-17 11:21:13 -03001383MODULE_ALIAS("platform:sh-vou");