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 #define DOWN_SCALE_MAX 8
21 #define UP_SCALE_MAX 8
22
23 struct mdp4_plane {
24 struct drm_plane base;
25 const char *name;
26
27 enum mdp4_pipe pipe;
28
29 uint32_t nformats;
30 uint32_t formats[32];
31
32 bool enabled;
33 };
34 #define to_mdp4_plane(x) container_of(x, struct mdp4_plane, base)
35
36 static void mdp4_plane_set_scanout(struct drm_plane *plane,
37 struct drm_framebuffer *fb);
38 static int mdp4_plane_mode_set(struct drm_plane *plane,
39 struct drm_crtc *crtc, struct drm_framebuffer *fb,
40 int crtc_x, int crtc_y,
41 unsigned int crtc_w, unsigned int crtc_h,
42 uint32_t src_x, uint32_t src_y,
43 uint32_t src_w, uint32_t src_h);
44
get_kms(struct drm_plane * plane)45 static struct mdp4_kms *get_kms(struct drm_plane *plane)
46 {
47 struct msm_drm_private *priv = plane->dev->dev_private;
48 return to_mdp4_kms(to_mdp_kms(priv->kms));
49 }
50
mdp4_plane_destroy(struct drm_plane * plane)51 static void mdp4_plane_destroy(struct drm_plane *plane)
52 {
53 struct mdp4_plane *mdp4_plane = to_mdp4_plane(plane);
54
55 drm_plane_helper_disable(plane);
56 drm_plane_cleanup(plane);
57
58 kfree(mdp4_plane);
59 }
60
61 /* helper to install properties which are common to planes and crtcs */
mdp4_plane_install_properties(struct drm_plane * plane,struct drm_mode_object * obj)62 void mdp4_plane_install_properties(struct drm_plane *plane,
63 struct drm_mode_object *obj)
64 {
65 // XXX
66 }
67
mdp4_plane_set_property(struct drm_plane * plane,struct drm_property * property,uint64_t val)68 int mdp4_plane_set_property(struct drm_plane *plane,
69 struct drm_property *property, uint64_t val)
70 {
71 // XXX
72 return -EINVAL;
73 }
74
75 static const struct drm_plane_funcs mdp4_plane_funcs = {
76 .update_plane = drm_atomic_helper_update_plane,
77 .disable_plane = drm_atomic_helper_disable_plane,
78 .destroy = mdp4_plane_destroy,
79 .set_property = mdp4_plane_set_property,
80 .reset = drm_atomic_helper_plane_reset,
81 .atomic_duplicate_state = drm_atomic_helper_plane_duplicate_state,
82 .atomic_destroy_state = drm_atomic_helper_plane_destroy_state,
83 };
84
mdp4_plane_prepare_fb(struct drm_plane * plane,struct drm_framebuffer * fb,const struct drm_plane_state * new_state)85 static int mdp4_plane_prepare_fb(struct drm_plane *plane,
86 struct drm_framebuffer *fb,
87 const struct drm_plane_state *new_state)
88 {
89 struct mdp4_plane *mdp4_plane = to_mdp4_plane(plane);
90 struct mdp4_kms *mdp4_kms = get_kms(plane);
91
92 DBG("%s: prepare: FB[%u]", mdp4_plane->name, fb->base.id);
93 return msm_framebuffer_prepare(fb, mdp4_kms->id);
94 }
95
mdp4_plane_cleanup_fb(struct drm_plane * plane,struct drm_framebuffer * fb,const struct drm_plane_state * old_state)96 static void mdp4_plane_cleanup_fb(struct drm_plane *plane,
97 struct drm_framebuffer *fb,
98 const struct drm_plane_state *old_state)
99 {
100 struct mdp4_plane *mdp4_plane = to_mdp4_plane(plane);
101 struct mdp4_kms *mdp4_kms = get_kms(plane);
102
103 DBG("%s: cleanup: FB[%u]", mdp4_plane->name, fb->base.id);
104 msm_framebuffer_cleanup(fb, mdp4_kms->id);
105 }
106
107
mdp4_plane_atomic_check(struct drm_plane * plane,struct drm_plane_state * state)108 static int mdp4_plane_atomic_check(struct drm_plane *plane,
109 struct drm_plane_state *state)
110 {
111 return 0;
112 }
113
mdp4_plane_atomic_update(struct drm_plane * plane,struct drm_plane_state * old_state)114 static void mdp4_plane_atomic_update(struct drm_plane *plane,
115 struct drm_plane_state *old_state)
116 {
117 struct drm_plane_state *state = plane->state;
118 int ret;
119
120 ret = mdp4_plane_mode_set(plane,
121 state->crtc, state->fb,
122 state->crtc_x, state->crtc_y,
123 state->crtc_w, state->crtc_h,
124 state->src_x, state->src_y,
125 state->src_w, state->src_h);
126 /* atomic_check should have ensured that this doesn't fail */
127 WARN_ON(ret < 0);
128 }
129
130 static const struct drm_plane_helper_funcs mdp4_plane_helper_funcs = {
131 .prepare_fb = mdp4_plane_prepare_fb,
132 .cleanup_fb = mdp4_plane_cleanup_fb,
133 .atomic_check = mdp4_plane_atomic_check,
134 .atomic_update = mdp4_plane_atomic_update,
135 };
136
mdp4_plane_set_scanout(struct drm_plane * plane,struct drm_framebuffer * fb)137 static void mdp4_plane_set_scanout(struct drm_plane *plane,
138 struct drm_framebuffer *fb)
139 {
140 struct mdp4_plane *mdp4_plane = to_mdp4_plane(plane);
141 struct mdp4_kms *mdp4_kms = get_kms(plane);
142 enum mdp4_pipe pipe = mdp4_plane->pipe;
143
144 mdp4_write(mdp4_kms, REG_MDP4_PIPE_SRC_STRIDE_A(pipe),
145 MDP4_PIPE_SRC_STRIDE_A_P0(fb->pitches[0]) |
146 MDP4_PIPE_SRC_STRIDE_A_P1(fb->pitches[1]));
147
148 mdp4_write(mdp4_kms, REG_MDP4_PIPE_SRC_STRIDE_B(pipe),
149 MDP4_PIPE_SRC_STRIDE_B_P2(fb->pitches[2]) |
150 MDP4_PIPE_SRC_STRIDE_B_P3(fb->pitches[3]));
151
152 mdp4_write(mdp4_kms, REG_MDP4_PIPE_SRCP0_BASE(pipe),
153 msm_framebuffer_iova(fb, mdp4_kms->id, 0));
154 mdp4_write(mdp4_kms, REG_MDP4_PIPE_SRCP1_BASE(pipe),
155 msm_framebuffer_iova(fb, mdp4_kms->id, 1));
156 mdp4_write(mdp4_kms, REG_MDP4_PIPE_SRCP2_BASE(pipe),
157 msm_framebuffer_iova(fb, mdp4_kms->id, 2));
158 mdp4_write(mdp4_kms, REG_MDP4_PIPE_SRCP3_BASE(pipe),
159 msm_framebuffer_iova(fb, mdp4_kms->id, 3));
160
161 plane->fb = fb;
162 }
163
mdp4_write_csc_config(struct mdp4_kms * mdp4_kms,enum mdp4_pipe pipe,struct csc_cfg * csc)164 static void mdp4_write_csc_config(struct mdp4_kms *mdp4_kms,
165 enum mdp4_pipe pipe, struct csc_cfg *csc)
166 {
167 int i;
168
169 for (i = 0; i < ARRAY_SIZE(csc->matrix); i++) {
170 mdp4_write(mdp4_kms, REG_MDP4_PIPE_CSC_MV(pipe, i),
171 csc->matrix[i]);
172 }
173
174 for (i = 0; i < ARRAY_SIZE(csc->post_bias) ; i++) {
175 mdp4_write(mdp4_kms, REG_MDP4_PIPE_CSC_PRE_BV(pipe, i),
176 csc->pre_bias[i]);
177
178 mdp4_write(mdp4_kms, REG_MDP4_PIPE_CSC_POST_BV(pipe, i),
179 csc->post_bias[i]);
180 }
181
182 for (i = 0; i < ARRAY_SIZE(csc->post_clamp) ; i++) {
183 mdp4_write(mdp4_kms, REG_MDP4_PIPE_CSC_PRE_LV(pipe, i),
184 csc->pre_clamp[i]);
185
186 mdp4_write(mdp4_kms, REG_MDP4_PIPE_CSC_POST_LV(pipe, i),
187 csc->post_clamp[i]);
188 }
189 }
190
191 #define MDP4_VG_PHASE_STEP_DEFAULT 0x20000000
192
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)193 static int mdp4_plane_mode_set(struct drm_plane *plane,
194 struct drm_crtc *crtc, struct drm_framebuffer *fb,
195 int crtc_x, int crtc_y,
196 unsigned int crtc_w, unsigned int crtc_h,
197 uint32_t src_x, uint32_t src_y,
198 uint32_t src_w, uint32_t src_h)
199 {
200 struct drm_device *dev = plane->dev;
201 struct mdp4_plane *mdp4_plane = to_mdp4_plane(plane);
202 struct mdp4_kms *mdp4_kms = get_kms(plane);
203 enum mdp4_pipe pipe = mdp4_plane->pipe;
204 const struct mdp_format *format;
205 uint32_t op_mode = 0;
206 uint32_t phasex_step = MDP4_VG_PHASE_STEP_DEFAULT;
207 uint32_t phasey_step = MDP4_VG_PHASE_STEP_DEFAULT;
208
209 if (!(crtc && fb)) {
210 DBG("%s: disabled!", mdp4_plane->name);
211 return 0;
212 }
213
214 /* src values are in Q16 fixed point, convert to integer: */
215 src_x = src_x >> 16;
216 src_y = src_y >> 16;
217 src_w = src_w >> 16;
218 src_h = src_h >> 16;
219
220 DBG("%s: FB[%u] %u,%u,%u,%u -> CRTC[%u] %d,%d,%u,%u", mdp4_plane->name,
221 fb->base.id, src_x, src_y, src_w, src_h,
222 crtc->base.id, crtc_x, crtc_y, crtc_w, crtc_h);
223
224 format = to_mdp_format(msm_framebuffer_format(fb));
225
226 if (src_w > (crtc_w * DOWN_SCALE_MAX)) {
227 dev_err(dev->dev, "Width down scaling exceeds limits!\n");
228 return -ERANGE;
229 }
230
231 if (src_h > (crtc_h * DOWN_SCALE_MAX)) {
232 dev_err(dev->dev, "Height down scaling exceeds limits!\n");
233 return -ERANGE;
234 }
235
236 if (crtc_w > (src_w * UP_SCALE_MAX)) {
237 dev_err(dev->dev, "Width up scaling exceeds limits!\n");
238 return -ERANGE;
239 }
240
241 if (crtc_h > (src_h * UP_SCALE_MAX)) {
242 dev_err(dev->dev, "Height up scaling exceeds limits!\n");
243 return -ERANGE;
244 }
245
246 if (src_w != crtc_w) {
247 uint32_t sel_unit = SCALE_FIR;
248 op_mode |= MDP4_PIPE_OP_MODE_SCALEX_EN;
249
250 if (MDP_FORMAT_IS_YUV(format)) {
251 if (crtc_w > src_w)
252 sel_unit = SCALE_PIXEL_RPT;
253 else if (crtc_w <= (src_w / 4))
254 sel_unit = SCALE_MN_PHASE;
255
256 op_mode |= MDP4_PIPE_OP_MODE_SCALEX_UNIT_SEL(sel_unit);
257 phasex_step = mult_frac(MDP4_VG_PHASE_STEP_DEFAULT,
258 src_w, crtc_w);
259 }
260 }
261
262 if (src_h != crtc_h) {
263 uint32_t sel_unit = SCALE_FIR;
264 op_mode |= MDP4_PIPE_OP_MODE_SCALEY_EN;
265
266 if (MDP_FORMAT_IS_YUV(format)) {
267
268 if (crtc_h > src_h)
269 sel_unit = SCALE_PIXEL_RPT;
270 else if (crtc_h <= (src_h / 4))
271 sel_unit = SCALE_MN_PHASE;
272
273 op_mode |= MDP4_PIPE_OP_MODE_SCALEY_UNIT_SEL(sel_unit);
274 phasey_step = mult_frac(MDP4_VG_PHASE_STEP_DEFAULT,
275 src_h, crtc_h);
276 }
277 }
278
279 mdp4_write(mdp4_kms, REG_MDP4_PIPE_SRC_SIZE(pipe),
280 MDP4_PIPE_SRC_SIZE_WIDTH(src_w) |
281 MDP4_PIPE_SRC_SIZE_HEIGHT(src_h));
282
283 mdp4_write(mdp4_kms, REG_MDP4_PIPE_SRC_XY(pipe),
284 MDP4_PIPE_SRC_XY_X(src_x) |
285 MDP4_PIPE_SRC_XY_Y(src_y));
286
287 mdp4_write(mdp4_kms, REG_MDP4_PIPE_DST_SIZE(pipe),
288 MDP4_PIPE_DST_SIZE_WIDTH(crtc_w) |
289 MDP4_PIPE_DST_SIZE_HEIGHT(crtc_h));
290
291 mdp4_write(mdp4_kms, REG_MDP4_PIPE_DST_XY(pipe),
292 MDP4_PIPE_DST_XY_X(crtc_x) |
293 MDP4_PIPE_DST_XY_Y(crtc_y));
294
295 mdp4_plane_set_scanout(plane, fb);
296
297 mdp4_write(mdp4_kms, REG_MDP4_PIPE_SRC_FORMAT(pipe),
298 MDP4_PIPE_SRC_FORMAT_A_BPC(format->bpc_a) |
299 MDP4_PIPE_SRC_FORMAT_R_BPC(format->bpc_r) |
300 MDP4_PIPE_SRC_FORMAT_G_BPC(format->bpc_g) |
301 MDP4_PIPE_SRC_FORMAT_B_BPC(format->bpc_b) |
302 COND(format->alpha_enable, MDP4_PIPE_SRC_FORMAT_ALPHA_ENABLE) |
303 MDP4_PIPE_SRC_FORMAT_CPP(format->cpp - 1) |
304 MDP4_PIPE_SRC_FORMAT_UNPACK_COUNT(format->unpack_count - 1) |
305 MDP4_PIPE_SRC_FORMAT_FETCH_PLANES(format->fetch_type) |
306 MDP4_PIPE_SRC_FORMAT_CHROMA_SAMP(format->chroma_sample) |
307 COND(format->unpack_tight, MDP4_PIPE_SRC_FORMAT_UNPACK_TIGHT));
308
309 mdp4_write(mdp4_kms, REG_MDP4_PIPE_SRC_UNPACK(pipe),
310 MDP4_PIPE_SRC_UNPACK_ELEM0(format->unpack[0]) |
311 MDP4_PIPE_SRC_UNPACK_ELEM1(format->unpack[1]) |
312 MDP4_PIPE_SRC_UNPACK_ELEM2(format->unpack[2]) |
313 MDP4_PIPE_SRC_UNPACK_ELEM3(format->unpack[3]));
314
315 if (MDP_FORMAT_IS_YUV(format)) {
316 struct csc_cfg *csc = mdp_get_default_csc_cfg(CSC_YUV2RGB);
317
318 op_mode |= MDP4_PIPE_OP_MODE_SRC_YCBCR;
319 op_mode |= MDP4_PIPE_OP_MODE_CSC_EN;
320 mdp4_write_csc_config(mdp4_kms, pipe, csc);
321 }
322
323 mdp4_write(mdp4_kms, REG_MDP4_PIPE_OP_MODE(pipe), op_mode);
324 mdp4_write(mdp4_kms, REG_MDP4_PIPE_PHASEX_STEP(pipe), phasex_step);
325 mdp4_write(mdp4_kms, REG_MDP4_PIPE_PHASEY_STEP(pipe), phasey_step);
326
327 return 0;
328 }
329
330 static const char *pipe_names[] = {
331 "VG1", "VG2",
332 "RGB1", "RGB2", "RGB3",
333 "VG3", "VG4",
334 };
335
mdp4_plane_pipe(struct drm_plane * plane)336 enum mdp4_pipe mdp4_plane_pipe(struct drm_plane *plane)
337 {
338 struct mdp4_plane *mdp4_plane = to_mdp4_plane(plane);
339 return mdp4_plane->pipe;
340 }
341
342 /* initialize plane */
mdp4_plane_init(struct drm_device * dev,enum mdp4_pipe pipe_id,bool private_plane)343 struct drm_plane *mdp4_plane_init(struct drm_device *dev,
344 enum mdp4_pipe pipe_id, bool private_plane)
345 {
346 struct drm_plane *plane = NULL;
347 struct mdp4_plane *mdp4_plane;
348 int ret;
349 enum drm_plane_type type;
350
351 mdp4_plane = kzalloc(sizeof(*mdp4_plane), GFP_KERNEL);
352 if (!mdp4_plane) {
353 ret = -ENOMEM;
354 goto fail;
355 }
356
357 plane = &mdp4_plane->base;
358
359 mdp4_plane->pipe = pipe_id;
360 mdp4_plane->name = pipe_names[pipe_id];
361
362 mdp4_plane->nformats = mdp4_get_formats(pipe_id, mdp4_plane->formats,
363 ARRAY_SIZE(mdp4_plane->formats));
364
365 type = private_plane ? DRM_PLANE_TYPE_PRIMARY : DRM_PLANE_TYPE_OVERLAY;
366 ret = drm_universal_plane_init(dev, plane, 0xff, &mdp4_plane_funcs,
367 mdp4_plane->formats, mdp4_plane->nformats, type);
368 if (ret)
369 goto fail;
370
371 drm_plane_helper_add(plane, &mdp4_plane_helper_funcs);
372
373 mdp4_plane_install_properties(plane, &plane->base);
374
375 return plane;
376
377 fail:
378 if (plane)
379 mdp4_plane_destroy(plane);
380
381 return ERR_PTR(ret);
382 }
383