2 * Copyright (C) 2013 Red Hat
3 * Author: Rob Clark <robdclark@gmail.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 version 2 as published by
7 * the Free Software Foundation.
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
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/>.
20 #define DOWN_SCALE_MAX 8
21 #define UP_SCALE_MAX 8
24 struct drm_plane base;
34 #define to_mdp4_plane(x) container_of(x, struct mdp4_plane, base)
36 /* MDP format helper functions */
38 enum mdp4_frame_format mdp4_get_frame_format(struct drm_framebuffer *fb)
42 if (fb->modifier[1] == DRM_FORMAT_MOD_SAMSUNG_64_32_TILE)
45 if (fb->pixel_format == DRM_FORMAT_NV12 && is_tile)
46 return FRAME_TILE_YCBCR_420;
51 static void mdp4_plane_set_scanout(struct drm_plane *plane,
52 struct drm_framebuffer *fb);
53 static int mdp4_plane_mode_set(struct drm_plane *plane,
54 struct drm_crtc *crtc, struct drm_framebuffer *fb,
55 int crtc_x, int crtc_y,
56 unsigned int crtc_w, unsigned int crtc_h,
57 uint32_t src_x, uint32_t src_y,
58 uint32_t src_w, uint32_t src_h);
60 static struct mdp4_kms *get_kms(struct drm_plane *plane)
62 struct msm_drm_private *priv = plane->dev->dev_private;
63 return to_mdp4_kms(to_mdp_kms(priv->kms));
66 static void mdp4_plane_destroy(struct drm_plane *plane)
68 struct mdp4_plane *mdp4_plane = to_mdp4_plane(plane);
70 drm_plane_helper_disable(plane);
71 drm_plane_cleanup(plane);
76 /* helper to install properties which are common to planes and crtcs */
77 void mdp4_plane_install_properties(struct drm_plane *plane,
78 struct drm_mode_object *obj)
83 int mdp4_plane_set_property(struct drm_plane *plane,
84 struct drm_property *property, uint64_t val)
90 static const struct drm_plane_funcs mdp4_plane_funcs = {
91 .update_plane = drm_atomic_helper_update_plane,
92 .disable_plane = drm_atomic_helper_disable_plane,
93 .destroy = mdp4_plane_destroy,
94 .set_property = mdp4_plane_set_property,
95 .reset = drm_atomic_helper_plane_reset,
96 .atomic_duplicate_state = drm_atomic_helper_plane_duplicate_state,
97 .atomic_destroy_state = drm_atomic_helper_plane_destroy_state,
100 static int mdp4_plane_prepare_fb(struct drm_plane *plane,
101 struct drm_framebuffer *fb,
102 const struct drm_plane_state *new_state)
104 struct mdp4_plane *mdp4_plane = to_mdp4_plane(plane);
105 struct mdp4_kms *mdp4_kms = get_kms(plane);
107 DBG("%s: prepare: FB[%u]", mdp4_plane->name, fb->base.id);
108 return msm_framebuffer_prepare(fb, mdp4_kms->id);
111 static void mdp4_plane_cleanup_fb(struct drm_plane *plane,
112 struct drm_framebuffer *fb,
113 const struct drm_plane_state *old_state)
115 struct mdp4_plane *mdp4_plane = to_mdp4_plane(plane);
116 struct mdp4_kms *mdp4_kms = get_kms(plane);
118 DBG("%s: cleanup: FB[%u]", mdp4_plane->name, fb->base.id);
119 msm_framebuffer_cleanup(fb, mdp4_kms->id);
123 static int mdp4_plane_atomic_check(struct drm_plane *plane,
124 struct drm_plane_state *state)
129 static void mdp4_plane_atomic_update(struct drm_plane *plane,
130 struct drm_plane_state *old_state)
132 struct drm_plane_state *state = plane->state;
135 ret = mdp4_plane_mode_set(plane,
136 state->crtc, state->fb,
137 state->crtc_x, state->crtc_y,
138 state->crtc_w, state->crtc_h,
139 state->src_x, state->src_y,
140 state->src_w, state->src_h);
141 /* atomic_check should have ensured that this doesn't fail */
145 static const struct drm_plane_helper_funcs mdp4_plane_helper_funcs = {
146 .prepare_fb = mdp4_plane_prepare_fb,
147 .cleanup_fb = mdp4_plane_cleanup_fb,
148 .atomic_check = mdp4_plane_atomic_check,
149 .atomic_update = mdp4_plane_atomic_update,
152 static void mdp4_plane_set_scanout(struct drm_plane *plane,
153 struct drm_framebuffer *fb)
155 struct mdp4_plane *mdp4_plane = to_mdp4_plane(plane);
156 struct mdp4_kms *mdp4_kms = get_kms(plane);
157 enum mdp4_pipe pipe = mdp4_plane->pipe;
159 mdp4_write(mdp4_kms, REG_MDP4_PIPE_SRC_STRIDE_A(pipe),
160 MDP4_PIPE_SRC_STRIDE_A_P0(fb->pitches[0]) |
161 MDP4_PIPE_SRC_STRIDE_A_P1(fb->pitches[1]));
163 mdp4_write(mdp4_kms, REG_MDP4_PIPE_SRC_STRIDE_B(pipe),
164 MDP4_PIPE_SRC_STRIDE_B_P2(fb->pitches[2]) |
165 MDP4_PIPE_SRC_STRIDE_B_P3(fb->pitches[3]));
167 mdp4_write(mdp4_kms, REG_MDP4_PIPE_SRCP0_BASE(pipe),
168 msm_framebuffer_iova(fb, mdp4_kms->id, 0));
169 mdp4_write(mdp4_kms, REG_MDP4_PIPE_SRCP1_BASE(pipe),
170 msm_framebuffer_iova(fb, mdp4_kms->id, 1));
171 mdp4_write(mdp4_kms, REG_MDP4_PIPE_SRCP2_BASE(pipe),
172 msm_framebuffer_iova(fb, mdp4_kms->id, 2));
173 mdp4_write(mdp4_kms, REG_MDP4_PIPE_SRCP3_BASE(pipe),
174 msm_framebuffer_iova(fb, mdp4_kms->id, 3));
179 static void mdp4_write_csc_config(struct mdp4_kms *mdp4_kms,
180 enum mdp4_pipe pipe, struct csc_cfg *csc)
184 for (i = 0; i < ARRAY_SIZE(csc->matrix); i++) {
185 mdp4_write(mdp4_kms, REG_MDP4_PIPE_CSC_MV(pipe, i),
189 for (i = 0; i < ARRAY_SIZE(csc->post_bias) ; i++) {
190 mdp4_write(mdp4_kms, REG_MDP4_PIPE_CSC_PRE_BV(pipe, i),
193 mdp4_write(mdp4_kms, REG_MDP4_PIPE_CSC_POST_BV(pipe, i),
197 for (i = 0; i < ARRAY_SIZE(csc->post_clamp) ; i++) {
198 mdp4_write(mdp4_kms, REG_MDP4_PIPE_CSC_PRE_LV(pipe, i),
201 mdp4_write(mdp4_kms, REG_MDP4_PIPE_CSC_POST_LV(pipe, i),
206 #define MDP4_VG_PHASE_STEP_DEFAULT 0x20000000
208 static int mdp4_plane_mode_set(struct drm_plane *plane,
209 struct drm_crtc *crtc, struct drm_framebuffer *fb,
210 int crtc_x, int crtc_y,
211 unsigned int crtc_w, unsigned int crtc_h,
212 uint32_t src_x, uint32_t src_y,
213 uint32_t src_w, uint32_t src_h)
215 struct drm_device *dev = plane->dev;
216 struct mdp4_plane *mdp4_plane = to_mdp4_plane(plane);
217 struct mdp4_kms *mdp4_kms = get_kms(plane);
218 enum mdp4_pipe pipe = mdp4_plane->pipe;
219 const struct mdp_format *format;
220 uint32_t op_mode = 0;
221 uint32_t phasex_step = MDP4_VG_PHASE_STEP_DEFAULT;
222 uint32_t phasey_step = MDP4_VG_PHASE_STEP_DEFAULT;
223 enum mdp4_frame_format frame_type = mdp4_get_frame_format(fb);
226 DBG("%s: disabled!", mdp4_plane->name);
230 /* src values are in Q16 fixed point, convert to integer: */
236 DBG("%s: FB[%u] %u,%u,%u,%u -> CRTC[%u] %d,%d,%u,%u", mdp4_plane->name,
237 fb->base.id, src_x, src_y, src_w, src_h,
238 crtc->base.id, crtc_x, crtc_y, crtc_w, crtc_h);
240 format = to_mdp_format(msm_framebuffer_format(fb));
242 if (src_w > (crtc_w * DOWN_SCALE_MAX)) {
243 dev_err(dev->dev, "Width down scaling exceeds limits!\n");
247 if (src_h > (crtc_h * DOWN_SCALE_MAX)) {
248 dev_err(dev->dev, "Height down scaling exceeds limits!\n");
252 if (crtc_w > (src_w * UP_SCALE_MAX)) {
253 dev_err(dev->dev, "Width up scaling exceeds limits!\n");
257 if (crtc_h > (src_h * UP_SCALE_MAX)) {
258 dev_err(dev->dev, "Height up scaling exceeds limits!\n");
262 if (src_w != crtc_w) {
263 uint32_t sel_unit = SCALE_FIR;
264 op_mode |= MDP4_PIPE_OP_MODE_SCALEX_EN;
266 if (MDP_FORMAT_IS_YUV(format)) {
268 sel_unit = SCALE_PIXEL_RPT;
269 else if (crtc_w <= (src_w / 4))
270 sel_unit = SCALE_MN_PHASE;
272 op_mode |= MDP4_PIPE_OP_MODE_SCALEX_UNIT_SEL(sel_unit);
273 phasex_step = mult_frac(MDP4_VG_PHASE_STEP_DEFAULT,
278 if (src_h != crtc_h) {
279 uint32_t sel_unit = SCALE_FIR;
280 op_mode |= MDP4_PIPE_OP_MODE_SCALEY_EN;
282 if (MDP_FORMAT_IS_YUV(format)) {
285 sel_unit = SCALE_PIXEL_RPT;
286 else if (crtc_h <= (src_h / 4))
287 sel_unit = SCALE_MN_PHASE;
289 op_mode |= MDP4_PIPE_OP_MODE_SCALEY_UNIT_SEL(sel_unit);
290 phasey_step = mult_frac(MDP4_VG_PHASE_STEP_DEFAULT,
295 mdp4_write(mdp4_kms, REG_MDP4_PIPE_SRC_SIZE(pipe),
296 MDP4_PIPE_SRC_SIZE_WIDTH(src_w) |
297 MDP4_PIPE_SRC_SIZE_HEIGHT(src_h));
299 mdp4_write(mdp4_kms, REG_MDP4_PIPE_SRC_XY(pipe),
300 MDP4_PIPE_SRC_XY_X(src_x) |
301 MDP4_PIPE_SRC_XY_Y(src_y));
303 mdp4_write(mdp4_kms, REG_MDP4_PIPE_DST_SIZE(pipe),
304 MDP4_PIPE_DST_SIZE_WIDTH(crtc_w) |
305 MDP4_PIPE_DST_SIZE_HEIGHT(crtc_h));
307 mdp4_write(mdp4_kms, REG_MDP4_PIPE_DST_XY(pipe),
308 MDP4_PIPE_DST_XY_X(crtc_x) |
309 MDP4_PIPE_DST_XY_Y(crtc_y));
311 mdp4_plane_set_scanout(plane, fb);
313 mdp4_write(mdp4_kms, REG_MDP4_PIPE_SRC_FORMAT(pipe),
314 MDP4_PIPE_SRC_FORMAT_A_BPC(format->bpc_a) |
315 MDP4_PIPE_SRC_FORMAT_R_BPC(format->bpc_r) |
316 MDP4_PIPE_SRC_FORMAT_G_BPC(format->bpc_g) |
317 MDP4_PIPE_SRC_FORMAT_B_BPC(format->bpc_b) |
318 COND(format->alpha_enable, MDP4_PIPE_SRC_FORMAT_ALPHA_ENABLE) |
319 MDP4_PIPE_SRC_FORMAT_CPP(format->cpp - 1) |
320 MDP4_PIPE_SRC_FORMAT_UNPACK_COUNT(format->unpack_count - 1) |
321 MDP4_PIPE_SRC_FORMAT_FETCH_PLANES(format->fetch_type) |
322 MDP4_PIPE_SRC_FORMAT_CHROMA_SAMP(format->chroma_sample) |
323 MDP4_PIPE_SRC_FORMAT_FRAME_FORMAT(frame_type) |
324 COND(format->unpack_tight, MDP4_PIPE_SRC_FORMAT_UNPACK_TIGHT));
326 mdp4_write(mdp4_kms, REG_MDP4_PIPE_SRC_UNPACK(pipe),
327 MDP4_PIPE_SRC_UNPACK_ELEM0(format->unpack[0]) |
328 MDP4_PIPE_SRC_UNPACK_ELEM1(format->unpack[1]) |
329 MDP4_PIPE_SRC_UNPACK_ELEM2(format->unpack[2]) |
330 MDP4_PIPE_SRC_UNPACK_ELEM3(format->unpack[3]));
332 if (MDP_FORMAT_IS_YUV(format)) {
333 struct csc_cfg *csc = mdp_get_default_csc_cfg(CSC_YUV2RGB);
335 op_mode |= MDP4_PIPE_OP_MODE_SRC_YCBCR;
336 op_mode |= MDP4_PIPE_OP_MODE_CSC_EN;
337 mdp4_write_csc_config(mdp4_kms, pipe, csc);
340 mdp4_write(mdp4_kms, REG_MDP4_PIPE_OP_MODE(pipe), op_mode);
341 mdp4_write(mdp4_kms, REG_MDP4_PIPE_PHASEX_STEP(pipe), phasex_step);
342 mdp4_write(mdp4_kms, REG_MDP4_PIPE_PHASEY_STEP(pipe), phasey_step);
344 if (frame_type != FRAME_LINEAR)
345 mdp4_write(mdp4_kms, REG_MDP4_PIPE_SSTILE_FRAME_SIZE(pipe),
346 MDP4_PIPE_SSTILE_FRAME_SIZE_WIDTH(src_w) |
347 MDP4_PIPE_SSTILE_FRAME_SIZE_HEIGHT(src_h));
352 static const char *pipe_names[] = {
354 "RGB1", "RGB2", "RGB3",
358 enum mdp4_pipe mdp4_plane_pipe(struct drm_plane *plane)
360 struct mdp4_plane *mdp4_plane = to_mdp4_plane(plane);
361 return mdp4_plane->pipe;
364 /* initialize plane */
365 struct drm_plane *mdp4_plane_init(struct drm_device *dev,
366 enum mdp4_pipe pipe_id, bool private_plane)
368 struct drm_plane *plane = NULL;
369 struct mdp4_plane *mdp4_plane;
371 enum drm_plane_type type;
373 mdp4_plane = kzalloc(sizeof(*mdp4_plane), GFP_KERNEL);
379 plane = &mdp4_plane->base;
381 mdp4_plane->pipe = pipe_id;
382 mdp4_plane->name = pipe_names[pipe_id];
384 mdp4_plane->nformats = mdp4_get_formats(pipe_id, mdp4_plane->formats,
385 ARRAY_SIZE(mdp4_plane->formats));
387 type = private_plane ? DRM_PLANE_TYPE_PRIMARY : DRM_PLANE_TYPE_OVERLAY;
388 ret = drm_universal_plane_init(dev, plane, 0xff, &mdp4_plane_funcs,
389 mdp4_plane->formats, mdp4_plane->nformats, type);
393 drm_plane_helper_add(plane, &mdp4_plane_helper_funcs);
395 mdp4_plane_install_properties(plane, &plane->base);
401 mdp4_plane_destroy(plane);