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1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * Copyright (C) 2015 Texas Instruments
4 * Author: Jyri Sarha <jsarha@ti.com>
5 */
6
7#include <drm/drm_atomic.h>
8#include <drm/drm_plane_helper.h>
9#include <drm/drm_atomic_helper.h>
10#include <drm/drm_fourcc.h>
11
12#include "tilcdc_drv.h"
13
14static const struct drm_plane_funcs tilcdc_plane_funcs = {
15 .update_plane = drm_atomic_helper_update_plane,
16 .disable_plane = drm_atomic_helper_disable_plane,
17 .destroy = drm_plane_cleanup,
18 .reset = drm_atomic_helper_plane_reset,
19 .atomic_duplicate_state = drm_atomic_helper_plane_duplicate_state,
20 .atomic_destroy_state = drm_atomic_helper_plane_destroy_state,
21};
22
23static int tilcdc_plane_atomic_check(struct drm_plane *plane,
24 struct drm_atomic_state *state)
25{
26 struct drm_plane_state *new_state = drm_atomic_get_new_plane_state(state,
27 plane);
28 struct drm_crtc_state *crtc_state;
29 struct drm_plane_state *old_state = drm_atomic_get_old_plane_state(state,
30 plane);
31 unsigned int pitch;
32
33 if (!new_state->crtc)
34 return 0;
35
36 if (WARN_ON(!new_state->fb))
37 return -EINVAL;
38
39 if (new_state->crtc_x || new_state->crtc_y) {
40 dev_err(plane->dev->dev, "%s: crtc position must be zero.",
41 __func__);
42 return -EINVAL;
43 }
44
45 crtc_state = drm_atomic_get_existing_crtc_state(state,
46 new_state->crtc);
47 /* we should have a crtc state if the plane is attached to a crtc */
48 if (WARN_ON(!crtc_state))
49 return 0;
50
51 if (crtc_state->mode.hdisplay != new_state->crtc_w ||
52 crtc_state->mode.vdisplay != new_state->crtc_h) {
53 dev_err(plane->dev->dev,
54 "%s: Size must match mode (%dx%d == %dx%d)", __func__,
55 crtc_state->mode.hdisplay, crtc_state->mode.vdisplay,
56 new_state->crtc_w, new_state->crtc_h);
57 return -EINVAL;
58 }
59
60 pitch = crtc_state->mode.hdisplay *
61 new_state->fb->format->cpp[0];
62 if (new_state->fb->pitches[0] != pitch) {
63 dev_err(plane->dev->dev,
64 "Invalid pitch: fb and crtc widths must be the same");
65 return -EINVAL;
66 }
67
68 if (old_state->fb && new_state->fb->format != old_state->fb->format) {
69 dev_dbg(plane->dev->dev,
70 "%s(): pixel format change requires mode_change\n",
71 __func__);
72 crtc_state->mode_changed = true;
73 }
74
75 return 0;
76}
77
78static void tilcdc_plane_atomic_update(struct drm_plane *plane,
79 struct drm_atomic_state *state)
80{
81 struct drm_plane_state *new_state = drm_atomic_get_new_plane_state(state,
82 plane);
83
84 if (!new_state->crtc)
85 return;
86
87 if (WARN_ON(!new_state->fb || !new_state->crtc->state))
88 return;
89
90 if (tilcdc_crtc_update_fb(new_state->crtc,
91 new_state->fb,
92 new_state->crtc->state->event) == 0) {
93 new_state->crtc->state->event = NULL;
94 }
95}
96
97static const struct drm_plane_helper_funcs plane_helper_funcs = {
98 .atomic_check = tilcdc_plane_atomic_check,
99 .atomic_update = tilcdc_plane_atomic_update,
100};
101
102int tilcdc_plane_init(struct drm_device *dev,
103 struct drm_plane *plane)
104{
105 struct tilcdc_drm_private *priv = dev->dev_private;
106 int ret;
107
108 ret = drm_plane_init(dev, plane, 1,
109 &tilcdc_plane_funcs,
110 priv->pixelformats,
111 priv->num_pixelformats,
112 true);
113 if (ret) {
114 dev_err(dev->dev, "Failed to initialize plane: %d\n", ret);
115 return ret;
116 }
117
118 drm_plane_helper_add(plane, &plane_helper_funcs);
119
120 return 0;
121}
1/*
2 * Copyright (C) 2015 Texas Instruments
3 * Author: Jyri Sarha <jsarha@ti.com>
4 *
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 as published by
7 * the Free Software Foundation.
8 *
9 * This program is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
12 * more details.
13 *
14 * You should have received a copy of the GNU General Public License along with
15 * this program. If not, see <http://www.gnu.org/licenses/>.
16 */
17
18#include <drm/drmP.h>
19
20#include <drm/drm_atomic.h>
21#include <drm/drm_plane_helper.h>
22#include <drm/drm_atomic_helper.h>
23#include <uapi/drm/drm_fourcc.h>
24
25#include "tilcdc_drv.h"
26
27static struct drm_plane_funcs tilcdc_plane_funcs = {
28 .update_plane = drm_atomic_helper_update_plane,
29 .disable_plane = drm_atomic_helper_disable_plane,
30 .destroy = drm_plane_cleanup,
31 .set_property = drm_atomic_helper_plane_set_property,
32 .reset = drm_atomic_helper_plane_reset,
33 .atomic_duplicate_state = drm_atomic_helper_plane_duplicate_state,
34 .atomic_destroy_state = drm_atomic_helper_plane_destroy_state,
35};
36
37static int tilcdc_plane_atomic_check(struct drm_plane *plane,
38 struct drm_plane_state *state)
39{
40 struct drm_crtc_state *crtc_state;
41 struct drm_plane_state *old_state = plane->state;
42 unsigned int pitch;
43
44 if (!state->crtc)
45 return 0;
46
47 if (WARN_ON(!state->fb))
48 return -EINVAL;
49
50 if (state->crtc_x || state->crtc_y) {
51 dev_err(plane->dev->dev, "%s: crtc position must be zero.",
52 __func__);
53 return -EINVAL;
54 }
55
56 crtc_state = drm_atomic_get_existing_crtc_state(state->state,
57 state->crtc);
58 /* we should have a crtc state if the plane is attached to a crtc */
59 if (WARN_ON(!crtc_state))
60 return 0;
61
62 if (crtc_state->mode.hdisplay != state->crtc_w ||
63 crtc_state->mode.vdisplay != state->crtc_h) {
64 dev_err(plane->dev->dev,
65 "%s: Size must match mode (%dx%d == %dx%d)", __func__,
66 crtc_state->mode.hdisplay, crtc_state->mode.vdisplay,
67 state->crtc_w, state->crtc_h);
68 return -EINVAL;
69 }
70
71 pitch = crtc_state->mode.hdisplay *
72 drm_format_plane_cpp(state->fb->pixel_format, 0);
73 if (state->fb->pitches[0] != pitch) {
74 dev_err(plane->dev->dev,
75 "Invalid pitch: fb and crtc widths must be the same");
76 return -EINVAL;
77 }
78
79 if (state->fb && old_state->fb &&
80 state->fb->pixel_format != old_state->fb->pixel_format) {
81 dev_dbg(plane->dev->dev,
82 "%s(): pixel format change requires mode_change\n",
83 __func__);
84 crtc_state->mode_changed = true;
85 }
86
87 return 0;
88}
89
90static void tilcdc_plane_atomic_update(struct drm_plane *plane,
91 struct drm_plane_state *old_state)
92{
93 struct drm_plane_state *state = plane->state;
94
95 if (!state->crtc)
96 return;
97
98 if (WARN_ON(!state->fb || !state->crtc->state))
99 return;
100
101 tilcdc_crtc_update_fb(state->crtc,
102 state->fb,
103 state->crtc->state->event);
104}
105
106static const struct drm_plane_helper_funcs plane_helper_funcs = {
107 .atomic_check = tilcdc_plane_atomic_check,
108 .atomic_update = tilcdc_plane_atomic_update,
109};
110
111int tilcdc_plane_init(struct drm_device *dev,
112 struct drm_plane *plane)
113{
114 struct tilcdc_drm_private *priv = dev->dev_private;
115 int ret;
116
117 ret = drm_plane_init(dev, plane, 1,
118 &tilcdc_plane_funcs,
119 priv->pixelformats,
120 priv->num_pixelformats,
121 true);
122 if (ret) {
123 dev_err(dev->dev, "Failed to initialize plane: %d\n", ret);
124 return ret;
125 }
126
127 drm_plane_helper_add(plane, &plane_helper_funcs);
128
129 return 0;
130}