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 caps;
30 uint32_t nformats;
31 uint32_t formats[32];
32
33 bool enabled;
34 };
35 #define to_mdp4_plane(x) container_of(x, struct mdp4_plane, base)
36
37 /* MDP format helper functions */
38 static inline
mdp4_get_frame_format(struct drm_framebuffer * fb)39 enum mdp4_frame_format mdp4_get_frame_format(struct drm_framebuffer *fb)
40 {
41 bool is_tile = false;
42
43 if (fb->modifier == DRM_FORMAT_MOD_SAMSUNG_64_32_TILE)
44 is_tile = true;
45
46 if (fb->format->format == DRM_FORMAT_NV12 && is_tile)
47 return FRAME_TILE_YCBCR_420;
48
49 return FRAME_LINEAR;
50 }
51
52 static void mdp4_plane_set_scanout(struct drm_plane *plane,
53 struct drm_framebuffer *fb);
54 static int mdp4_plane_mode_set(struct drm_plane *plane,
55 struct drm_crtc *crtc, struct drm_framebuffer *fb,
56 int crtc_x, int crtc_y,
57 unsigned int crtc_w, unsigned int crtc_h,
58 uint32_t src_x, uint32_t src_y,
59 uint32_t src_w, uint32_t src_h);
60
get_kms(struct drm_plane * plane)61 static struct mdp4_kms *get_kms(struct drm_plane *plane)
62 {
63 struct msm_drm_private *priv = plane->dev->dev_private;
64 return to_mdp4_kms(to_mdp_kms(priv->kms));
65 }
66
mdp4_plane_destroy(struct drm_plane * plane)67 static void mdp4_plane_destroy(struct drm_plane *plane)
68 {
69 struct mdp4_plane *mdp4_plane = to_mdp4_plane(plane);
70
71 drm_plane_helper_disable(plane, NULL);
72 drm_plane_cleanup(plane);
73
74 kfree(mdp4_plane);
75 }
76
77 /* helper to install properties which are common to planes and crtcs */
mdp4_plane_install_properties(struct drm_plane * plane,struct drm_mode_object * obj)78 static void mdp4_plane_install_properties(struct drm_plane *plane,
79 struct drm_mode_object *obj)
80 {
81 // XXX
82 }
83
mdp4_plane_set_property(struct drm_plane * plane,struct drm_property * property,uint64_t val)84 static int mdp4_plane_set_property(struct drm_plane *plane,
85 struct drm_property *property, uint64_t val)
86 {
87 // XXX
88 return -EINVAL;
89 }
90
91 static const struct drm_plane_funcs mdp4_plane_funcs = {
92 .update_plane = drm_atomic_helper_update_plane,
93 .disable_plane = drm_atomic_helper_disable_plane,
94 .destroy = mdp4_plane_destroy,
95 .set_property = mdp4_plane_set_property,
96 .reset = drm_atomic_helper_plane_reset,
97 .atomic_duplicate_state = drm_atomic_helper_plane_duplicate_state,
98 .atomic_destroy_state = drm_atomic_helper_plane_destroy_state,
99 };
100
mdp4_plane_cleanup_fb(struct drm_plane * plane,struct drm_plane_state * old_state)101 static void mdp4_plane_cleanup_fb(struct drm_plane *plane,
102 struct drm_plane_state *old_state)
103 {
104 struct mdp4_plane *mdp4_plane = to_mdp4_plane(plane);
105 struct mdp4_kms *mdp4_kms = get_kms(plane);
106 struct msm_kms *kms = &mdp4_kms->base.base;
107 struct drm_framebuffer *fb = old_state->fb;
108
109 if (!fb)
110 return;
111
112 DBG("%s: cleanup: FB[%u]", mdp4_plane->name, fb->base.id);
113 msm_framebuffer_cleanup(fb, kms->aspace);
114 }
115
116
mdp4_plane_atomic_check(struct drm_plane * plane,struct drm_plane_state * state)117 static int mdp4_plane_atomic_check(struct drm_plane *plane,
118 struct drm_plane_state *state)
119 {
120 return 0;
121 }
122
mdp4_plane_atomic_update(struct drm_plane * plane,struct drm_plane_state * old_state)123 static void mdp4_plane_atomic_update(struct drm_plane *plane,
124 struct drm_plane_state *old_state)
125 {
126 struct drm_plane_state *state = plane->state;
127 int ret;
128
129 ret = mdp4_plane_mode_set(plane,
130 state->crtc, state->fb,
131 state->crtc_x, state->crtc_y,
132 state->crtc_w, state->crtc_h,
133 state->src_x, state->src_y,
134 state->src_w, state->src_h);
135 /* atomic_check should have ensured that this doesn't fail */
136 WARN_ON(ret < 0);
137 }
138
139 static const struct drm_plane_helper_funcs mdp4_plane_helper_funcs = {
140 .prepare_fb = msm_atomic_prepare_fb,
141 .cleanup_fb = mdp4_plane_cleanup_fb,
142 .atomic_check = mdp4_plane_atomic_check,
143 .atomic_update = mdp4_plane_atomic_update,
144 };
145
mdp4_plane_set_scanout(struct drm_plane * plane,struct drm_framebuffer * fb)146 static void mdp4_plane_set_scanout(struct drm_plane *plane,
147 struct drm_framebuffer *fb)
148 {
149 struct mdp4_plane *mdp4_plane = to_mdp4_plane(plane);
150 struct mdp4_kms *mdp4_kms = get_kms(plane);
151 struct msm_kms *kms = &mdp4_kms->base.base;
152 enum mdp4_pipe pipe = mdp4_plane->pipe;
153
154 mdp4_write(mdp4_kms, REG_MDP4_PIPE_SRC_STRIDE_A(pipe),
155 MDP4_PIPE_SRC_STRIDE_A_P0(fb->pitches[0]) |
156 MDP4_PIPE_SRC_STRIDE_A_P1(fb->pitches[1]));
157
158 mdp4_write(mdp4_kms, REG_MDP4_PIPE_SRC_STRIDE_B(pipe),
159 MDP4_PIPE_SRC_STRIDE_B_P2(fb->pitches[2]) |
160 MDP4_PIPE_SRC_STRIDE_B_P3(fb->pitches[3]));
161
162 mdp4_write(mdp4_kms, REG_MDP4_PIPE_SRCP0_BASE(pipe),
163 msm_framebuffer_iova(fb, kms->aspace, 0));
164 mdp4_write(mdp4_kms, REG_MDP4_PIPE_SRCP1_BASE(pipe),
165 msm_framebuffer_iova(fb, kms->aspace, 1));
166 mdp4_write(mdp4_kms, REG_MDP4_PIPE_SRCP2_BASE(pipe),
167 msm_framebuffer_iova(fb, kms->aspace, 2));
168 mdp4_write(mdp4_kms, REG_MDP4_PIPE_SRCP3_BASE(pipe),
169 msm_framebuffer_iova(fb, kms->aspace, 3));
170 }
171
mdp4_write_csc_config(struct mdp4_kms * mdp4_kms,enum mdp4_pipe pipe,struct csc_cfg * csc)172 static void mdp4_write_csc_config(struct mdp4_kms *mdp4_kms,
173 enum mdp4_pipe pipe, struct csc_cfg *csc)
174 {
175 int i;
176
177 for (i = 0; i < ARRAY_SIZE(csc->matrix); i++) {
178 mdp4_write(mdp4_kms, REG_MDP4_PIPE_CSC_MV(pipe, i),
179 csc->matrix[i]);
180 }
181
182 for (i = 0; i < ARRAY_SIZE(csc->post_bias) ; i++) {
183 mdp4_write(mdp4_kms, REG_MDP4_PIPE_CSC_PRE_BV(pipe, i),
184 csc->pre_bias[i]);
185
186 mdp4_write(mdp4_kms, REG_MDP4_PIPE_CSC_POST_BV(pipe, i),
187 csc->post_bias[i]);
188 }
189
190 for (i = 0; i < ARRAY_SIZE(csc->post_clamp) ; i++) {
191 mdp4_write(mdp4_kms, REG_MDP4_PIPE_CSC_PRE_LV(pipe, i),
192 csc->pre_clamp[i]);
193
194 mdp4_write(mdp4_kms, REG_MDP4_PIPE_CSC_POST_LV(pipe, i),
195 csc->post_clamp[i]);
196 }
197 }
198
199 #define MDP4_VG_PHASE_STEP_DEFAULT 0x20000000
200
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)201 static int mdp4_plane_mode_set(struct drm_plane *plane,
202 struct drm_crtc *crtc, struct drm_framebuffer *fb,
203 int crtc_x, int crtc_y,
204 unsigned int crtc_w, unsigned int crtc_h,
205 uint32_t src_x, uint32_t src_y,
206 uint32_t src_w, uint32_t src_h)
207 {
208 struct drm_device *dev = plane->dev;
209 struct mdp4_plane *mdp4_plane = to_mdp4_plane(plane);
210 struct mdp4_kms *mdp4_kms = get_kms(plane);
211 enum mdp4_pipe pipe = mdp4_plane->pipe;
212 const struct mdp_format *format;
213 uint32_t op_mode = 0;
214 uint32_t phasex_step = MDP4_VG_PHASE_STEP_DEFAULT;
215 uint32_t phasey_step = MDP4_VG_PHASE_STEP_DEFAULT;
216 enum mdp4_frame_format frame_type;
217
218 if (!(crtc && fb)) {
219 DBG("%s: disabled!", mdp4_plane->name);
220 return 0;
221 }
222
223 frame_type = mdp4_get_frame_format(fb);
224
225 /* src values are in Q16 fixed point, convert to integer: */
226 src_x = src_x >> 16;
227 src_y = src_y >> 16;
228 src_w = src_w >> 16;
229 src_h = src_h >> 16;
230
231 DBG("%s: FB[%u] %u,%u,%u,%u -> CRTC[%u] %d,%d,%u,%u", mdp4_plane->name,
232 fb->base.id, src_x, src_y, src_w, src_h,
233 crtc->base.id, crtc_x, crtc_y, crtc_w, crtc_h);
234
235 format = to_mdp_format(msm_framebuffer_format(fb));
236
237 if (src_w > (crtc_w * DOWN_SCALE_MAX)) {
238 dev_err(dev->dev, "Width down scaling exceeds limits!\n");
239 return -ERANGE;
240 }
241
242 if (src_h > (crtc_h * DOWN_SCALE_MAX)) {
243 dev_err(dev->dev, "Height down scaling exceeds limits!\n");
244 return -ERANGE;
245 }
246
247 if (crtc_w > (src_w * UP_SCALE_MAX)) {
248 dev_err(dev->dev, "Width up scaling exceeds limits!\n");
249 return -ERANGE;
250 }
251
252 if (crtc_h > (src_h * UP_SCALE_MAX)) {
253 dev_err(dev->dev, "Height up scaling exceeds limits!\n");
254 return -ERANGE;
255 }
256
257 if (src_w != crtc_w) {
258 uint32_t sel_unit = SCALE_FIR;
259 op_mode |= MDP4_PIPE_OP_MODE_SCALEX_EN;
260
261 if (MDP_FORMAT_IS_YUV(format)) {
262 if (crtc_w > src_w)
263 sel_unit = SCALE_PIXEL_RPT;
264 else if (crtc_w <= (src_w / 4))
265 sel_unit = SCALE_MN_PHASE;
266
267 op_mode |= MDP4_PIPE_OP_MODE_SCALEX_UNIT_SEL(sel_unit);
268 phasex_step = mult_frac(MDP4_VG_PHASE_STEP_DEFAULT,
269 src_w, crtc_w);
270 }
271 }
272
273 if (src_h != crtc_h) {
274 uint32_t sel_unit = SCALE_FIR;
275 op_mode |= MDP4_PIPE_OP_MODE_SCALEY_EN;
276
277 if (MDP_FORMAT_IS_YUV(format)) {
278
279 if (crtc_h > src_h)
280 sel_unit = SCALE_PIXEL_RPT;
281 else if (crtc_h <= (src_h / 4))
282 sel_unit = SCALE_MN_PHASE;
283
284 op_mode |= MDP4_PIPE_OP_MODE_SCALEY_UNIT_SEL(sel_unit);
285 phasey_step = mult_frac(MDP4_VG_PHASE_STEP_DEFAULT,
286 src_h, crtc_h);
287 }
288 }
289
290 mdp4_write(mdp4_kms, REG_MDP4_PIPE_SRC_SIZE(pipe),
291 MDP4_PIPE_SRC_SIZE_WIDTH(src_w) |
292 MDP4_PIPE_SRC_SIZE_HEIGHT(src_h));
293
294 mdp4_write(mdp4_kms, REG_MDP4_PIPE_SRC_XY(pipe),
295 MDP4_PIPE_SRC_XY_X(src_x) |
296 MDP4_PIPE_SRC_XY_Y(src_y));
297
298 mdp4_write(mdp4_kms, REG_MDP4_PIPE_DST_SIZE(pipe),
299 MDP4_PIPE_DST_SIZE_WIDTH(crtc_w) |
300 MDP4_PIPE_DST_SIZE_HEIGHT(crtc_h));
301
302 mdp4_write(mdp4_kms, REG_MDP4_PIPE_DST_XY(pipe),
303 MDP4_PIPE_DST_XY_X(crtc_x) |
304 MDP4_PIPE_DST_XY_Y(crtc_y));
305
306 mdp4_plane_set_scanout(plane, fb);
307
308 mdp4_write(mdp4_kms, REG_MDP4_PIPE_SRC_FORMAT(pipe),
309 MDP4_PIPE_SRC_FORMAT_A_BPC(format->bpc_a) |
310 MDP4_PIPE_SRC_FORMAT_R_BPC(format->bpc_r) |
311 MDP4_PIPE_SRC_FORMAT_G_BPC(format->bpc_g) |
312 MDP4_PIPE_SRC_FORMAT_B_BPC(format->bpc_b) |
313 COND(format->alpha_enable, MDP4_PIPE_SRC_FORMAT_ALPHA_ENABLE) |
314 MDP4_PIPE_SRC_FORMAT_CPP(format->cpp - 1) |
315 MDP4_PIPE_SRC_FORMAT_UNPACK_COUNT(format->unpack_count - 1) |
316 MDP4_PIPE_SRC_FORMAT_FETCH_PLANES(format->fetch_type) |
317 MDP4_PIPE_SRC_FORMAT_CHROMA_SAMP(format->chroma_sample) |
318 MDP4_PIPE_SRC_FORMAT_FRAME_FORMAT(frame_type) |
319 COND(format->unpack_tight, MDP4_PIPE_SRC_FORMAT_UNPACK_TIGHT));
320
321 mdp4_write(mdp4_kms, REG_MDP4_PIPE_SRC_UNPACK(pipe),
322 MDP4_PIPE_SRC_UNPACK_ELEM0(format->unpack[0]) |
323 MDP4_PIPE_SRC_UNPACK_ELEM1(format->unpack[1]) |
324 MDP4_PIPE_SRC_UNPACK_ELEM2(format->unpack[2]) |
325 MDP4_PIPE_SRC_UNPACK_ELEM3(format->unpack[3]));
326
327 if (MDP_FORMAT_IS_YUV(format)) {
328 struct csc_cfg *csc = mdp_get_default_csc_cfg(CSC_YUV2RGB);
329
330 op_mode |= MDP4_PIPE_OP_MODE_SRC_YCBCR;
331 op_mode |= MDP4_PIPE_OP_MODE_CSC_EN;
332 mdp4_write_csc_config(mdp4_kms, pipe, csc);
333 }
334
335 mdp4_write(mdp4_kms, REG_MDP4_PIPE_OP_MODE(pipe), op_mode);
336 mdp4_write(mdp4_kms, REG_MDP4_PIPE_PHASEX_STEP(pipe), phasex_step);
337 mdp4_write(mdp4_kms, REG_MDP4_PIPE_PHASEY_STEP(pipe), phasey_step);
338
339 if (frame_type != FRAME_LINEAR)
340 mdp4_write(mdp4_kms, REG_MDP4_PIPE_SSTILE_FRAME_SIZE(pipe),
341 MDP4_PIPE_SSTILE_FRAME_SIZE_WIDTH(src_w) |
342 MDP4_PIPE_SSTILE_FRAME_SIZE_HEIGHT(src_h));
343
344 return 0;
345 }
346
347 static const char *pipe_names[] = {
348 "VG1", "VG2",
349 "RGB1", "RGB2", "RGB3",
350 "VG3", "VG4",
351 };
352
mdp4_plane_pipe(struct drm_plane * plane)353 enum mdp4_pipe mdp4_plane_pipe(struct drm_plane *plane)
354 {
355 struct mdp4_plane *mdp4_plane = to_mdp4_plane(plane);
356 return mdp4_plane->pipe;
357 }
358
359 /* initialize plane */
mdp4_plane_init(struct drm_device * dev,enum mdp4_pipe pipe_id,bool private_plane)360 struct drm_plane *mdp4_plane_init(struct drm_device *dev,
361 enum mdp4_pipe pipe_id, bool private_plane)
362 {
363 struct drm_plane *plane = NULL;
364 struct mdp4_plane *mdp4_plane;
365 int ret;
366 enum drm_plane_type type;
367
368 mdp4_plane = kzalloc(sizeof(*mdp4_plane), GFP_KERNEL);
369 if (!mdp4_plane) {
370 ret = -ENOMEM;
371 goto fail;
372 }
373
374 plane = &mdp4_plane->base;
375
376 mdp4_plane->pipe = pipe_id;
377 mdp4_plane->name = pipe_names[pipe_id];
378 mdp4_plane->caps = mdp4_pipe_caps(pipe_id);
379
380 mdp4_plane->nformats = mdp_get_formats(mdp4_plane->formats,
381 ARRAY_SIZE(mdp4_plane->formats),
382 !pipe_supports_yuv(mdp4_plane->caps));
383
384 type = private_plane ? DRM_PLANE_TYPE_PRIMARY : DRM_PLANE_TYPE_OVERLAY;
385 ret = drm_universal_plane_init(dev, plane, 0xff, &mdp4_plane_funcs,
386 mdp4_plane->formats, mdp4_plane->nformats,
387 NULL, type, NULL);
388 if (ret)
389 goto fail;
390
391 drm_plane_helper_add(plane, &mdp4_plane_helper_funcs);
392
393 mdp4_plane_install_properties(plane, &plane->base);
394
395 return plane;
396
397 fail:
398 if (plane)
399 mdp4_plane_destroy(plane);
400
401 return ERR_PTR(ret);
402 }
403
