1 /*
2 * Copyright (C) 2013 Red Hat
3 * Author: Rob Clark <robdclark@gmail.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 "mdp4_kms.h"
19
20
21 struct mdp4_plane {
22 struct drm_plane base;
23 const char *name;
24
25 enum mdp4_pipe pipe;
26
27 uint32_t nformats;
28 uint32_t formats[32];
29
30 bool enabled;
31 };
32 #define to_mdp4_plane(x) container_of(x, struct mdp4_plane, base)
33
get_kms(struct drm_plane * plane)34 static struct mdp4_kms *get_kms(struct drm_plane *plane)
35 {
36 struct msm_drm_private *priv = plane->dev->dev_private;
37 return to_mdp4_kms(to_mdp_kms(priv->kms));
38 }
39
mdp4_plane_update(struct drm_plane * plane,struct drm_crtc * crtc,struct drm_framebuffer * fb,int crtc_x,int crtc_y,unsigned int crtc_w,unsigned int crtc_h,uint32_t src_x,uint32_t src_y,uint32_t src_w,uint32_t src_h)40 static int mdp4_plane_update(struct drm_plane *plane,
41 struct drm_crtc *crtc, struct drm_framebuffer *fb,
42 int crtc_x, int crtc_y,
43 unsigned int crtc_w, unsigned int crtc_h,
44 uint32_t src_x, uint32_t src_y,
45 uint32_t src_w, uint32_t src_h)
46 {
47 struct mdp4_plane *mdp4_plane = to_mdp4_plane(plane);
48
49 mdp4_plane->enabled = true;
50
51 if (plane->fb)
52 drm_framebuffer_unreference(plane->fb);
53
54 drm_framebuffer_reference(fb);
55
56 return mdp4_plane_mode_set(plane, crtc, fb,
57 crtc_x, crtc_y, crtc_w, crtc_h,
58 src_x, src_y, src_w, src_h);
59 }
60
mdp4_plane_disable(struct drm_plane * plane)61 static int mdp4_plane_disable(struct drm_plane *plane)
62 {
63 struct mdp4_plane *mdp4_plane = to_mdp4_plane(plane);
64 DBG("%s: disable", mdp4_plane->name);
65 if (plane->crtc)
66 mdp4_crtc_detach(plane->crtc, plane);
67 return 0;
68 }
69
mdp4_plane_destroy(struct drm_plane * plane)70 static void mdp4_plane_destroy(struct drm_plane *plane)
71 {
72 struct mdp4_plane *mdp4_plane = to_mdp4_plane(plane);
73
74 mdp4_plane_disable(plane);
75 drm_plane_cleanup(plane);
76
77 kfree(mdp4_plane);
78 }
79
80 /* helper to install properties which are common to planes and crtcs */
mdp4_plane_install_properties(struct drm_plane * plane,struct drm_mode_object * obj)81 void mdp4_plane_install_properties(struct drm_plane *plane,
82 struct drm_mode_object *obj)
83 {
84 // XXX
85 }
86
mdp4_plane_set_property(struct drm_plane * plane,struct drm_property * property,uint64_t val)87 int mdp4_plane_set_property(struct drm_plane *plane,
88 struct drm_property *property, uint64_t val)
89 {
90 // XXX
91 return -EINVAL;
92 }
93
94 static const struct drm_plane_funcs mdp4_plane_funcs = {
95 .update_plane = mdp4_plane_update,
96 .disable_plane = mdp4_plane_disable,
97 .destroy = mdp4_plane_destroy,
98 .set_property = mdp4_plane_set_property,
99 };
100
mdp4_plane_set_scanout(struct drm_plane * plane,struct drm_framebuffer * fb)101 void mdp4_plane_set_scanout(struct drm_plane *plane,
102 struct drm_framebuffer *fb)
103 {
104 struct mdp4_plane *mdp4_plane = to_mdp4_plane(plane);
105 struct mdp4_kms *mdp4_kms = get_kms(plane);
106 enum mdp4_pipe pipe = mdp4_plane->pipe;
107 uint32_t iova;
108
109 mdp4_write(mdp4_kms, REG_MDP4_PIPE_SRC_STRIDE_A(pipe),
110 MDP4_PIPE_SRC_STRIDE_A_P0(fb->pitches[0]) |
111 MDP4_PIPE_SRC_STRIDE_A_P1(fb->pitches[1]));
112
113 mdp4_write(mdp4_kms, REG_MDP4_PIPE_SRC_STRIDE_B(pipe),
114 MDP4_PIPE_SRC_STRIDE_B_P2(fb->pitches[2]) |
115 MDP4_PIPE_SRC_STRIDE_B_P3(fb->pitches[3]));
116
117 msm_gem_get_iova(msm_framebuffer_bo(fb, 0), mdp4_kms->id, &iova);
118 mdp4_write(mdp4_kms, REG_MDP4_PIPE_SRCP0_BASE(pipe), iova);
119
120 plane->fb = fb;
121 }
122
123 #define MDP4_VG_PHASE_STEP_DEFAULT 0x20000000
124
mdp4_plane_mode_set(struct drm_plane * plane,struct drm_crtc * crtc,struct drm_framebuffer * fb,int crtc_x,int crtc_y,unsigned int crtc_w,unsigned int crtc_h,uint32_t src_x,uint32_t src_y,uint32_t src_w,uint32_t src_h)125 int mdp4_plane_mode_set(struct drm_plane *plane,
126 struct drm_crtc *crtc, struct drm_framebuffer *fb,
127 int crtc_x, int crtc_y,
128 unsigned int crtc_w, unsigned int crtc_h,
129 uint32_t src_x, uint32_t src_y,
130 uint32_t src_w, uint32_t src_h)
131 {
132 struct mdp4_plane *mdp4_plane = to_mdp4_plane(plane);
133 struct mdp4_kms *mdp4_kms = get_kms(plane);
134 enum mdp4_pipe pipe = mdp4_plane->pipe;
135 const struct mdp_format *format;
136 uint32_t op_mode = 0;
137 uint32_t phasex_step = MDP4_VG_PHASE_STEP_DEFAULT;
138 uint32_t phasey_step = MDP4_VG_PHASE_STEP_DEFAULT;
139
140 /* src values are in Q16 fixed point, convert to integer: */
141 src_x = src_x >> 16;
142 src_y = src_y >> 16;
143 src_w = src_w >> 16;
144 src_h = src_h >> 16;
145
146 DBG("%s: FB[%u] %u,%u,%u,%u -> CRTC[%u] %d,%d,%u,%u", mdp4_plane->name,
147 fb->base.id, src_x, src_y, src_w, src_h,
148 crtc->base.id, crtc_x, crtc_y, crtc_w, crtc_h);
149
150 if (src_w != crtc_w) {
151 op_mode |= MDP4_PIPE_OP_MODE_SCALEX_EN;
152 /* TODO calc phasex_step */
153 }
154
155 if (src_h != crtc_h) {
156 op_mode |= MDP4_PIPE_OP_MODE_SCALEY_EN;
157 /* TODO calc phasey_step */
158 }
159
160 mdp4_write(mdp4_kms, REG_MDP4_PIPE_SRC_SIZE(pipe),
161 MDP4_PIPE_SRC_SIZE_WIDTH(src_w) |
162 MDP4_PIPE_SRC_SIZE_HEIGHT(src_h));
163
164 mdp4_write(mdp4_kms, REG_MDP4_PIPE_SRC_XY(pipe),
165 MDP4_PIPE_SRC_XY_X(src_x) |
166 MDP4_PIPE_SRC_XY_Y(src_y));
167
168 mdp4_write(mdp4_kms, REG_MDP4_PIPE_DST_SIZE(pipe),
169 MDP4_PIPE_DST_SIZE_WIDTH(crtc_w) |
170 MDP4_PIPE_DST_SIZE_HEIGHT(crtc_h));
171
172 mdp4_write(mdp4_kms, REG_MDP4_PIPE_DST_XY(pipe),
173 MDP4_PIPE_DST_XY_X(crtc_x) |
174 MDP4_PIPE_DST_XY_Y(crtc_y));
175
176 mdp4_plane_set_scanout(plane, fb);
177
178 format = to_mdp_format(msm_framebuffer_format(fb));
179
180 mdp4_write(mdp4_kms, REG_MDP4_PIPE_SRC_FORMAT(pipe),
181 MDP4_PIPE_SRC_FORMAT_A_BPC(format->bpc_a) |
182 MDP4_PIPE_SRC_FORMAT_R_BPC(format->bpc_r) |
183 MDP4_PIPE_SRC_FORMAT_G_BPC(format->bpc_g) |
184 MDP4_PIPE_SRC_FORMAT_B_BPC(format->bpc_b) |
185 COND(format->alpha_enable, MDP4_PIPE_SRC_FORMAT_ALPHA_ENABLE) |
186 MDP4_PIPE_SRC_FORMAT_CPP(format->cpp - 1) |
187 MDP4_PIPE_SRC_FORMAT_UNPACK_COUNT(format->unpack_count - 1) |
188 COND(format->unpack_tight, MDP4_PIPE_SRC_FORMAT_UNPACK_TIGHT));
189
190 mdp4_write(mdp4_kms, REG_MDP4_PIPE_SRC_UNPACK(pipe),
191 MDP4_PIPE_SRC_UNPACK_ELEM0(format->unpack[0]) |
192 MDP4_PIPE_SRC_UNPACK_ELEM1(format->unpack[1]) |
193 MDP4_PIPE_SRC_UNPACK_ELEM2(format->unpack[2]) |
194 MDP4_PIPE_SRC_UNPACK_ELEM3(format->unpack[3]));
195
196 mdp4_write(mdp4_kms, REG_MDP4_PIPE_OP_MODE(pipe), op_mode);
197 mdp4_write(mdp4_kms, REG_MDP4_PIPE_PHASEX_STEP(pipe), phasex_step);
198 mdp4_write(mdp4_kms, REG_MDP4_PIPE_PHASEY_STEP(pipe), phasey_step);
199
200 /* TODO detach from old crtc (if we had more than one) */
201 mdp4_crtc_attach(crtc, plane);
202
203 return 0;
204 }
205
206 static const char *pipe_names[] = {
207 "VG1", "VG2",
208 "RGB1", "RGB2", "RGB3",
209 "VG3", "VG4",
210 };
211
mdp4_plane_pipe(struct drm_plane * plane)212 enum mdp4_pipe mdp4_plane_pipe(struct drm_plane *plane)
213 {
214 struct mdp4_plane *mdp4_plane = to_mdp4_plane(plane);
215 return mdp4_plane->pipe;
216 }
217
218 /* initialize plane */
mdp4_plane_init(struct drm_device * dev,enum mdp4_pipe pipe_id,bool private_plane)219 struct drm_plane *mdp4_plane_init(struct drm_device *dev,
220 enum mdp4_pipe pipe_id, bool private_plane)
221 {
222 struct drm_plane *plane = NULL;
223 struct mdp4_plane *mdp4_plane;
224 int ret;
225 enum drm_plane_type type;
226
227 mdp4_plane = kzalloc(sizeof(*mdp4_plane), GFP_KERNEL);
228 if (!mdp4_plane) {
229 ret = -ENOMEM;
230 goto fail;
231 }
232
233 plane = &mdp4_plane->base;
234
235 mdp4_plane->pipe = pipe_id;
236 mdp4_plane->name = pipe_names[pipe_id];
237
238 mdp4_plane->nformats = mdp4_get_formats(pipe_id, mdp4_plane->formats,
239 ARRAY_SIZE(mdp4_plane->formats));
240
241 type = private_plane ? DRM_PLANE_TYPE_PRIMARY : DRM_PLANE_TYPE_OVERLAY;
242 drm_universal_plane_init(dev, plane, 0xff, &mdp4_plane_funcs,
243 mdp4_plane->formats, mdp4_plane->nformats,
244 type);
245
246 mdp4_plane_install_properties(plane, &plane->base);
247
248 return plane;
249
250 fail:
251 if (plane)
252 mdp4_plane_destroy(plane);
253
254 return ERR_PTR(ret);
255 }
256