2 * Copyright (C) 2011 Samsung Electronics Co.Ltd
3 * Authors: Joonyoung Shim <jy0922.shim@samsung.com>
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License as published by the
7 * Free Software Foundation; either version 2 of the License, or (at your
8 * option) any later version.
14 #include <drm/exynos_drm.h>
15 #include <drm/drm_plane_helper.h>
16 #include "exynos_drm_drv.h"
17 #include "exynos_drm_crtc.h"
18 #include "exynos_drm_fb.h"
19 #include "exynos_drm_gem.h"
20 #include "exynos_drm_plane.h"
22 static const uint32_t formats
[] = {
29 * This function is to get X or Y size shown via screen. This needs length and
30 * start position of CRTC.
33 * CRTC ----------------
36 * There are six cases from a to f.
38 * <----- SCREEN ----->
40 * ----------|------------------|----------
44 * c --------------------------
49 static int exynos_plane_get_size(int start
, unsigned length
, unsigned last
)
51 int end
= start
+ length
;
56 size
= min_t(unsigned, end
, last
);
57 } else if (start
<= last
) {
58 size
= min_t(unsigned, last
- start
, length
);
64 int exynos_check_plane(struct drm_plane
*plane
, struct drm_framebuffer
*fb
)
66 struct exynos_drm_plane
*exynos_plane
= to_exynos_plane(plane
);
70 nr
= exynos_drm_fb_get_buf_cnt(fb
);
71 for (i
= 0; i
< nr
; i
++) {
72 struct exynos_drm_gem_buf
*buffer
= exynos_drm_fb_buffer(fb
, i
);
75 DRM_DEBUG_KMS("buffer is null\n");
79 exynos_plane
->dma_addr
[i
] = buffer
->dma_addr
+ fb
->offsets
[i
];
81 DRM_DEBUG_KMS("buffer: %d, dma_addr = 0x%lx\n",
82 i
, (unsigned long)exynos_plane
->dma_addr
[i
]);
88 void exynos_plane_mode_set(struct drm_plane
*plane
, struct drm_crtc
*crtc
,
89 struct drm_framebuffer
*fb
, int crtc_x
, int crtc_y
,
90 unsigned int crtc_w
, unsigned int crtc_h
,
91 uint32_t src_x
, uint32_t src_y
,
92 uint32_t src_w
, uint32_t src_h
)
94 struct exynos_drm_plane
*exynos_plane
= to_exynos_plane(plane
);
95 unsigned int actual_w
;
96 unsigned int actual_h
;
98 actual_w
= exynos_plane_get_size(crtc_x
, crtc_w
, crtc
->mode
.hdisplay
);
99 actual_h
= exynos_plane_get_size(crtc_y
, crtc_h
, crtc
->mode
.vdisplay
);
114 exynos_plane
->h_ratio
= (src_w
<< 16) / crtc_w
;
115 exynos_plane
->v_ratio
= (src_h
<< 16) / crtc_h
;
117 /* set drm framebuffer data. */
118 exynos_plane
->src_x
= src_x
;
119 exynos_plane
->src_y
= src_y
;
120 exynos_plane
->src_width
= (actual_w
* exynos_plane
->h_ratio
) >> 16;
121 exynos_plane
->src_height
= (actual_h
* exynos_plane
->v_ratio
) >> 16;
122 exynos_plane
->fb_width
= fb
->width
;
123 exynos_plane
->fb_height
= fb
->height
;
124 exynos_plane
->bpp
= fb
->bits_per_pixel
;
125 exynos_plane
->pitch
= fb
->pitches
[0];
126 exynos_plane
->pixel_format
= fb
->pixel_format
;
128 /* set plane range to be displayed. */
129 exynos_plane
->crtc_x
= crtc_x
;
130 exynos_plane
->crtc_y
= crtc_y
;
131 exynos_plane
->crtc_width
= actual_w
;
132 exynos_plane
->crtc_height
= actual_h
;
134 /* set drm mode data. */
135 exynos_plane
->mode_width
= crtc
->mode
.hdisplay
;
136 exynos_plane
->mode_height
= crtc
->mode
.vdisplay
;
137 exynos_plane
->refresh
= crtc
->mode
.vrefresh
;
138 exynos_plane
->scan_flag
= crtc
->mode
.flags
;
140 DRM_DEBUG_KMS("plane : offset_x/y(%d,%d), width/height(%d,%d)",
141 exynos_plane
->crtc_x
, exynos_plane
->crtc_y
,
142 exynos_plane
->crtc_width
, exynos_plane
->crtc_height
);
148 exynos_update_plane(struct drm_plane
*plane
, struct drm_crtc
*crtc
,
149 struct drm_framebuffer
*fb
, int crtc_x
, int crtc_y
,
150 unsigned int crtc_w
, unsigned int crtc_h
,
151 uint32_t src_x
, uint32_t src_y
,
152 uint32_t src_w
, uint32_t src_h
)
155 struct exynos_drm_crtc
*exynos_crtc
= to_exynos_crtc(crtc
);
156 struct exynos_drm_plane
*exynos_plane
= to_exynos_plane(plane
);
159 ret
= exynos_check_plane(plane
, fb
);
163 exynos_plane_mode_set(plane
, crtc
, fb
, crtc_x
, crtc_y
,
164 crtc_w
, crtc_h
, src_x
>> 16, src_y
>> 16,
165 src_w
>> 16, src_h
>> 16);
167 if (exynos_crtc
->ops
->win_commit
)
168 exynos_crtc
->ops
->win_commit(exynos_crtc
, exynos_plane
->zpos
);
173 static int exynos_disable_plane(struct drm_plane
*plane
)
175 struct exynos_drm_plane
*exynos_plane
= to_exynos_plane(plane
);
176 struct exynos_drm_crtc
*exynos_crtc
= to_exynos_crtc(plane
->crtc
);
178 if (exynos_crtc
&& exynos_crtc
->ops
->win_disable
)
179 exynos_crtc
->ops
->win_disable(exynos_crtc
,
185 static struct drm_plane_funcs exynos_plane_funcs
= {
186 .update_plane
= exynos_update_plane
,
187 .disable_plane
= exynos_disable_plane
,
188 .destroy
= drm_plane_cleanup
,
191 static void exynos_plane_attach_zpos_property(struct drm_plane
*plane
,
194 struct drm_device
*dev
= plane
->dev
;
195 struct exynos_drm_private
*dev_priv
= dev
->dev_private
;
196 struct drm_property
*prop
;
198 prop
= dev_priv
->plane_zpos_property
;
200 prop
= drm_property_create_range(dev
, DRM_MODE_PROP_IMMUTABLE
,
201 "zpos", 0, MAX_PLANE
- 1);
205 dev_priv
->plane_zpos_property
= prop
;
208 drm_object_attach_property(&plane
->base
, prop
, zpos
);
211 int exynos_plane_init(struct drm_device
*dev
,
212 struct exynos_drm_plane
*exynos_plane
,
213 unsigned long possible_crtcs
, enum drm_plane_type type
,
218 err
= drm_universal_plane_init(dev
, &exynos_plane
->base
, possible_crtcs
,
219 &exynos_plane_funcs
, formats
,
220 ARRAY_SIZE(formats
), type
);
222 DRM_ERROR("failed to initialize plane\n");
226 exynos_plane
->zpos
= zpos
;
228 if (type
== DRM_PLANE_TYPE_OVERLAY
)
229 exynos_plane_attach_zpos_property(&exynos_plane
->base
, zpos
);