summaryrefslogtreecommitdiff
path: root/drivers/media/platform/vsp1/vsp1_wpf.c
blob: 7baed81ff0051b7df9799aa47d9aa47f5dde4730 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
/*
 * vsp1_wpf.c  --  R-Car VSP1 Write Pixel Formatter
 *
 * Copyright (C) 2013 Renesas Corporation
 *
 * Contact: Laurent Pinchart (laurent.pinchart@ideasonboard.com)
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 */

#include <linux/device.h>

#include <media/v4l2-subdev.h>

#include "vsp1.h"
#include "vsp1_rwpf.h"
#include "vsp1_video.h"

#define WPF_MAX_WIDTH				2048
#define WPF_MAX_HEIGHT				2048

/* -----------------------------------------------------------------------------
 * Device Access
 */

static inline u32 vsp1_wpf_read(struct vsp1_rwpf *wpf, u32 reg)
{
	return vsp1_read(wpf->entity.vsp1,
			 reg + wpf->entity.index * VI6_WPF_OFFSET);
}

static inline void vsp1_wpf_write(struct vsp1_rwpf *wpf, u32 reg, u32 data)
{
	vsp1_write(wpf->entity.vsp1,
		   reg + wpf->entity.index * VI6_WPF_OFFSET, data);
}

/* -----------------------------------------------------------------------------
 * V4L2 Subdevice Core Operations
 */

static int wpf_s_stream(struct v4l2_subdev *subdev, int enable)
{
	struct vsp1_rwpf *wpf = to_rwpf(subdev);
	struct vsp1_pipeline *pipe =
		to_vsp1_pipeline(&wpf->entity.subdev.entity);
	struct vsp1_device *vsp1 = wpf->entity.vsp1;
	const struct v4l2_rect *crop = &wpf->crop;
	unsigned int i;
	u32 srcrpf = 0;
	u32 outfmt = 0;

	if (!enable) {
		vsp1_write(vsp1, VI6_WPF_IRQ_ENB(wpf->entity.index), 0);
		return 0;
	}

	/* Sources */
	for (i = 0; i < pipe->num_inputs; ++i) {
		struct vsp1_rwpf *input = pipe->inputs[i];

		srcrpf |= VI6_WPF_SRCRPF_RPF_ACT_MST(input->entity.index);
	}

	vsp1_wpf_write(wpf, VI6_WPF_SRCRPF, srcrpf);

	/* Destination stride. */
	if (!pipe->lif) {
		struct v4l2_pix_format_mplane *format = &wpf->video.format;

		vsp1_wpf_write(wpf, VI6_WPF_DSTM_STRIDE_Y,
			       format->plane_fmt[0].bytesperline);
		if (format->num_planes > 1)
			vsp1_wpf_write(wpf, VI6_WPF_DSTM_STRIDE_C,
				       format->plane_fmt[1].bytesperline);
	}

	vsp1_wpf_write(wpf, VI6_WPF_HSZCLIP, VI6_WPF_SZCLIP_EN |
		       (crop->left << VI6_WPF_SZCLIP_OFST_SHIFT) |
		       (crop->width << VI6_WPF_SZCLIP_SIZE_SHIFT));
	vsp1_wpf_write(wpf, VI6_WPF_VSZCLIP, VI6_WPF_SZCLIP_EN |
		       (crop->top << VI6_WPF_SZCLIP_OFST_SHIFT) |
		       (crop->height << VI6_WPF_SZCLIP_SIZE_SHIFT));

	/* Format */
	if (!pipe->lif) {
		const struct vsp1_format_info *fmtinfo = wpf->video.fmtinfo;

		outfmt = fmtinfo->hwfmt << VI6_WPF_OUTFMT_WRFMT_SHIFT;

		if (fmtinfo->swap_yc)
			outfmt |= VI6_WPF_OUTFMT_SPYCS;
		if (fmtinfo->swap_uv)
			outfmt |= VI6_WPF_OUTFMT_SPUVS;

		vsp1_wpf_write(wpf, VI6_WPF_DSWAP, fmtinfo->swap);
	}

	if (wpf->entity.formats[RWPF_PAD_SINK].code !=
	    wpf->entity.formats[RWPF_PAD_SOURCE].code)
		outfmt |= VI6_WPF_OUTFMT_CSC;

	vsp1_wpf_write(wpf, VI6_WPF_OUTFMT, outfmt);

	vsp1_write(vsp1, VI6_DPR_WPF_FPORCH(wpf->entity.index),
		   VI6_DPR_WPF_FPORCH_FP_WPFN);

	vsp1_write(vsp1, VI6_WPF_WRBCK_CTRL, 0);

	/* Enable interrupts */
	vsp1_write(vsp1, VI6_WPF_IRQ_STA(wpf->entity.index), 0);
	vsp1_write(vsp1, VI6_WPF_IRQ_ENB(wpf->entity.index),
		   VI6_WFP_IRQ_ENB_FREE);

	return 0;
}

/* -----------------------------------------------------------------------------
 * V4L2 Subdevice Operations
 */

static struct v4l2_subdev_video_ops wpf_video_ops = {
	.s_stream = wpf_s_stream,
};

static struct v4l2_subdev_pad_ops wpf_pad_ops = {
	.enum_mbus_code = vsp1_rwpf_enum_mbus_code,
	.enum_frame_size = vsp1_rwpf_enum_frame_size,
	.get_fmt = vsp1_rwpf_get_format,
	.set_fmt = vsp1_rwpf_set_format,
	.get_selection = vsp1_rwpf_get_selection,
	.set_selection = vsp1_rwpf_set_selection,
};

static struct v4l2_subdev_ops wpf_ops = {
	.video	= &wpf_video_ops,
	.pad    = &wpf_pad_ops,
};

/* -----------------------------------------------------------------------------
 * Video Device Operations
 */

static void wpf_vdev_queue(struct vsp1_video *video,
			   struct vsp1_video_buffer *buf)
{
	struct vsp1_rwpf *wpf = container_of(video, struct vsp1_rwpf, video);

	vsp1_wpf_write(wpf, VI6_WPF_DSTM_ADDR_Y, buf->addr[0]);
	if (buf->buf.num_planes > 1)
		vsp1_wpf_write(wpf, VI6_WPF_DSTM_ADDR_C0, buf->addr[1]);
	if (buf->buf.num_planes > 2)
		vsp1_wpf_write(wpf, VI6_WPF_DSTM_ADDR_C1, buf->addr[2]);
}

static const struct vsp1_video_operations wpf_vdev_ops = {
	.queue = wpf_vdev_queue,
};

/* -----------------------------------------------------------------------------
 * Initialization and Cleanup
 */

struct vsp1_rwpf *vsp1_wpf_create(struct vsp1_device *vsp1, unsigned int index)
{
	struct v4l2_subdev *subdev;
	struct vsp1_video *video;
	struct vsp1_rwpf *wpf;
	unsigned int flags;
	int ret;

	wpf = devm_kzalloc(vsp1->dev, sizeof(*wpf), GFP_KERNEL);
	if (wpf == NULL)
		return ERR_PTR(-ENOMEM);

	wpf->max_width = WPF_MAX_WIDTH;
	wpf->max_height = WPF_MAX_HEIGHT;

	wpf->entity.type = VSP1_ENTITY_WPF;
	wpf->entity.index = index;
	wpf->entity.id = VI6_DPR_NODE_WPF(index);

	ret = vsp1_entity_init(vsp1, &wpf->entity, 2);
	if (ret < 0)
		return ERR_PTR(ret);

	/* Initialize the V4L2 subdev. */
	subdev = &wpf->entity.subdev;
	v4l2_subdev_init(subdev, &wpf_ops);

	subdev->entity.ops = &vsp1_media_ops;
	subdev->internal_ops = &vsp1_subdev_internal_ops;
	snprintf(subdev->name, sizeof(subdev->name), "%s wpf.%u",
		 dev_name(vsp1->dev), index);
	v4l2_set_subdevdata(subdev, wpf);
	subdev->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;

	vsp1_entity_init_formats(subdev, NULL);

	/* Initialize the video device. */
	video = &wpf->video;

	video->type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
	video->vsp1 = vsp1;
	video->ops = &wpf_vdev_ops;

	ret = vsp1_video_init(video, &wpf->entity);
	if (ret < 0)
		goto error_video;

	/* Connect the video device to the WPF. All connections are immutable
	 * except for the WPF0 source link if a LIF is present.
	 */
	flags = MEDIA_LNK_FL_ENABLED;
	if (!(vsp1->pdata->features & VSP1_HAS_LIF) || index != 0)
		flags |= MEDIA_LNK_FL_IMMUTABLE;

	ret = media_entity_create_link(&wpf->entity.subdev.entity,
				       RWPF_PAD_SOURCE,
				       &wpf->video.video.entity, 0, flags);
	if (ret < 0)
		goto error_link;

	wpf->entity.sink = &wpf->video.video.entity;

	return wpf;

error_link:
	vsp1_video_cleanup(video);
error_video:
	media_entity_cleanup(&wpf->entity.subdev.entity);
	return ERR_PTR(ret);
}