1 // SPDX-License-Identifier: GPL-2.0
3 * (C) COPYRIGHT 2018 ARM Limited. All rights reserved.
4 * Author: James.Qian.Wang <james.qian.wang@arm.com>
8 #include <drm/drm_print.h>
10 #include "komeda_dev.h"
11 #include "komeda_kms.h"
12 #include "komeda_pipeline.h"
13 #include "komeda_framebuffer.h"
15 static inline bool is_switching_user(void *old, void *new)
23 static struct komeda_pipeline_state *
24 komeda_pipeline_get_state(struct komeda_pipeline *pipe,
25 struct drm_atomic_state *state)
27 struct drm_private_state *priv_st;
29 priv_st = drm_atomic_get_private_obj_state(state, &pipe->obj);
31 return ERR_CAST(priv_st);
33 return priv_to_pipe_st(priv_st);
36 struct komeda_pipeline_state *
37 komeda_pipeline_get_old_state(struct komeda_pipeline *pipe,
38 struct drm_atomic_state *state)
40 struct drm_private_state *priv_st;
42 priv_st = drm_atomic_get_old_private_obj_state(state, &pipe->obj);
44 return priv_to_pipe_st(priv_st);
48 static struct komeda_pipeline_state *
49 komeda_pipeline_get_new_state(struct komeda_pipeline *pipe,
50 struct drm_atomic_state *state)
52 struct drm_private_state *priv_st;
54 priv_st = drm_atomic_get_new_private_obj_state(state, &pipe->obj);
56 return priv_to_pipe_st(priv_st);
60 /* Assign pipeline for crtc */
61 static struct komeda_pipeline_state *
62 komeda_pipeline_get_state_and_set_crtc(struct komeda_pipeline *pipe,
63 struct drm_atomic_state *state,
64 struct drm_crtc *crtc)
66 struct komeda_pipeline_state *st;
68 st = komeda_pipeline_get_state(pipe, state);
72 if (is_switching_user(crtc, st->crtc)) {
73 DRM_DEBUG_ATOMIC("CRTC%d required pipeline%d is busy.\n",
74 drm_crtc_index(crtc), pipe->id);
75 return ERR_PTR(-EBUSY);
78 /* pipeline only can be disabled when the it is free or unused */
79 if (!crtc && st->active_comps) {
80 DRM_DEBUG_ATOMIC("Disabling a busy pipeline:%d.\n", pipe->id);
81 return ERR_PTR(-EBUSY);
87 struct komeda_crtc_state *kcrtc_st;
89 kcrtc_st = to_kcrtc_st(drm_atomic_get_new_crtc_state(state,
92 kcrtc_st->active_pipes |= BIT(pipe->id);
93 kcrtc_st->affected_pipes |= BIT(pipe->id);
98 static struct komeda_component_state *
99 komeda_component_get_state(struct komeda_component *c,
100 struct drm_atomic_state *state)
102 struct drm_private_state *priv_st;
104 WARN_ON(!drm_modeset_is_locked(&c->pipeline->obj.lock));
106 priv_st = drm_atomic_get_private_obj_state(state, &c->obj);
108 return ERR_CAST(priv_st);
110 return priv_to_comp_st(priv_st);
113 static struct komeda_component_state *
114 komeda_component_get_old_state(struct komeda_component *c,
115 struct drm_atomic_state *state)
117 struct drm_private_state *priv_st;
119 priv_st = drm_atomic_get_old_private_obj_state(state, &c->obj);
121 return priv_to_comp_st(priv_st);
126 * komeda_component_get_state_and_set_user()
128 * @c: component to get state and set user
129 * @state: global atomic state
130 * @user: direct user, the binding user
131 * @crtc: the CRTC user, the big boss :)
133 * This function accepts two users:
134 * - The direct user: can be plane/crtc/wb_connector depends on component
135 * - The big boss (CRTC)
136 * CRTC is the big boss (the final user), because all component resources
137 * eventually will be assigned to CRTC, like the layer will be binding to
138 * kms_plane, but kms plane will be binding to a CRTC eventually.
140 * The big boss (CRTC) is for pipeline assignment, since &komeda_component isn't
141 * independent and can be assigned to CRTC freely, but belongs to a specific
142 * pipeline, only pipeline can be shared between crtc, and pipeline as a whole
143 * (include all the internal components) assigned to a specific CRTC.
145 * So when set a user to komeda_component, need first to check the status of
146 * component->pipeline to see if the pipeline is available on this specific
147 * CRTC. if the pipeline is busy (assigned to another CRTC), even the required
148 * component is free, the component still cannot be assigned to the direct user.
150 static struct komeda_component_state *
151 komeda_component_get_state_and_set_user(struct komeda_component *c,
152 struct drm_atomic_state *state,
154 struct drm_crtc *crtc)
156 struct komeda_pipeline_state *pipe_st;
157 struct komeda_component_state *st;
159 /* First check if the pipeline is available */
160 pipe_st = komeda_pipeline_get_state_and_set_crtc(c->pipeline,
163 return ERR_CAST(pipe_st);
165 st = komeda_component_get_state(c, state);
169 /* check if the component has been occupied */
170 if (is_switching_user(user, st->binding_user)) {
171 DRM_DEBUG_ATOMIC("required %s is busy.\n", c->name);
172 return ERR_PTR(-EBUSY);
175 st->binding_user = user;
176 /* mark the component as active if user is valid */
177 if (st->binding_user)
178 pipe_st->active_comps |= BIT(c->id);
184 komeda_component_add_input(struct komeda_component_state *state,
185 struct komeda_component_output *input,
188 struct komeda_component *c = state->component;
190 WARN_ON((idx < 0 || idx >= c->max_active_inputs));
192 /* since the inputs[i] is only valid when it is active. So if a input[i]
193 * is a newly enabled input which switches from disable to enable, then
194 * the old inputs[i] is undefined (NOT zeroed), we can not rely on
195 * memcmp, but directly mark it changed
197 if (!has_bit(idx, state->affected_inputs) ||
198 memcmp(&state->inputs[idx], input, sizeof(*input))) {
199 memcpy(&state->inputs[idx], input, sizeof(*input));
200 state->changed_active_inputs |= BIT(idx);
202 state->active_inputs |= BIT(idx);
203 state->affected_inputs |= BIT(idx);
207 komeda_component_check_input(struct komeda_component_state *state,
208 struct komeda_component_output *input,
211 struct komeda_component *c = state->component;
213 if ((idx < 0) || (idx >= c->max_active_inputs)) {
214 DRM_DEBUG_ATOMIC("%s required an invalid %s-input[%d].\n",
215 input->component->name, c->name, idx);
219 if (has_bit(idx, state->active_inputs)) {
220 DRM_DEBUG_ATOMIC("%s required %s-input[%d] has been occupied already.\n",
221 input->component->name, c->name, idx);
229 komeda_component_set_output(struct komeda_component_output *output,
230 struct komeda_component *comp,
233 output->component = comp;
234 output->output_port = output_port;
238 komeda_component_validate_private(struct komeda_component *c,
239 struct komeda_component_state *st)
243 if (!c->funcs->validate)
246 err = c->funcs->validate(c, st);
248 DRM_DEBUG_ATOMIC("%s validate private failed.\n", c->name);
253 /* Get current available scaler from the component->supported_outputs */
254 static struct komeda_scaler *
255 komeda_component_get_avail_scaler(struct komeda_component *c,
256 struct drm_atomic_state *state)
258 struct komeda_pipeline_state *pipe_st;
261 pipe_st = komeda_pipeline_get_state(c->pipeline, state);
265 avail_scalers = (pipe_st->active_comps & KOMEDA_PIPELINE_SCALERS) ^
266 KOMEDA_PIPELINE_SCALERS;
268 c = komeda_component_pickup_output(c, avail_scalers);
274 komeda_rotate_data_flow(struct komeda_data_flow_cfg *dflow, u32 rot)
276 if (drm_rotation_90_or_270(rot)) {
277 swap(dflow->in_h, dflow->in_w);
278 swap(dflow->total_in_h, dflow->total_in_w);
283 komeda_layer_check_cfg(struct komeda_layer *layer,
284 struct komeda_fb *kfb,
285 struct komeda_data_flow_cfg *dflow)
287 u32 src_x, src_y, src_w, src_h;
288 u32 line_sz, max_line_sz;
290 if (!komeda_fb_is_layer_supported(kfb, layer->layer_type, dflow->rot))
293 if (layer->base.id == KOMEDA_COMPONENT_WB_LAYER) {
294 src_x = dflow->out_x;
295 src_y = dflow->out_y;
296 src_w = dflow->out_w;
297 src_h = dflow->out_h;
305 if (komeda_fb_check_src_coords(kfb, src_x, src_y, src_w, src_h))
308 if (!in_range(&layer->hsize_in, src_w)) {
309 DRM_DEBUG_ATOMIC("invalidate src_w %d.\n", src_w);
313 if (!in_range(&layer->vsize_in, src_h)) {
314 DRM_DEBUG_ATOMIC("invalidate src_h %d.\n", src_h);
318 if (drm_rotation_90_or_270(dflow->rot))
319 line_sz = dflow->in_h;
321 line_sz = dflow->in_w;
323 if (kfb->base.format->hsub > 1)
324 max_line_sz = layer->yuv_line_sz;
326 max_line_sz = layer->line_sz;
328 if (line_sz > max_line_sz) {
329 DRM_DEBUG_ATOMIC("Required line_sz: %d exceeds the max size %d\n",
330 line_sz, max_line_sz);
338 komeda_layer_validate(struct komeda_layer *layer,
339 struct komeda_plane_state *kplane_st,
340 struct komeda_data_flow_cfg *dflow)
342 struct drm_plane_state *plane_st = &kplane_st->base;
343 struct drm_framebuffer *fb = plane_st->fb;
344 struct komeda_fb *kfb = to_kfb(fb);
345 struct komeda_component_state *c_st;
346 struct komeda_layer_state *st;
349 err = komeda_layer_check_cfg(layer, kfb, dflow);
353 c_st = komeda_component_get_state_and_set_user(&layer->base,
354 plane_st->state, plane_st->plane, plane_st->crtc);
356 return PTR_ERR(c_st);
358 st = to_layer_st(c_st);
360 st->rot = dflow->rot;
363 st->hsize = kfb->aligned_w;
364 st->vsize = kfb->aligned_h;
365 st->afbc_crop_l = dflow->in_x;
366 st->afbc_crop_r = kfb->aligned_w - dflow->in_x - dflow->in_w;
367 st->afbc_crop_t = dflow->in_y;
368 st->afbc_crop_b = kfb->aligned_h - dflow->in_y - dflow->in_h;
370 st->hsize = dflow->in_w;
371 st->vsize = dflow->in_h;
378 for (i = 0; i < fb->format->num_planes; i++)
379 st->addr[i] = komeda_fb_get_pixel_addr(kfb, dflow->in_x,
382 err = komeda_component_validate_private(&layer->base, c_st);
386 /* update the data flow for the next stage */
387 komeda_component_set_output(&dflow->input, &layer->base, 0);
390 * The rotation has been handled by layer, so adjusted the data flow for
393 komeda_rotate_data_flow(dflow, st->rot);
399 komeda_wb_layer_validate(struct komeda_layer *wb_layer,
400 struct drm_connector_state *conn_st,
401 struct komeda_data_flow_cfg *dflow)
403 struct komeda_fb *kfb = to_kfb(conn_st->writeback_job->fb);
404 struct komeda_component_state *c_st;
405 struct komeda_layer_state *st;
408 err = komeda_layer_check_cfg(wb_layer, kfb, dflow);
412 c_st = komeda_component_get_state_and_set_user(&wb_layer->base,
413 conn_st->state, conn_st->connector, conn_st->crtc);
415 return PTR_ERR(c_st);
417 st = to_layer_st(c_st);
419 st->hsize = dflow->out_w;
420 st->vsize = dflow->out_h;
422 for (i = 0; i < kfb->base.format->num_planes; i++)
423 st->addr[i] = komeda_fb_get_pixel_addr(kfb, dflow->out_x,
426 komeda_component_add_input(&st->base, &dflow->input, 0);
427 komeda_component_set_output(&dflow->input, &wb_layer->base, 0);
432 static bool scaling_ratio_valid(u32 size_in, u32 size_out,
433 u32 max_upscaling, u32 max_downscaling)
435 if (size_out > size_in * max_upscaling)
437 else if (size_in > size_out * max_downscaling)
443 komeda_scaler_check_cfg(struct komeda_scaler *scaler,
444 struct komeda_crtc_state *kcrtc_st,
445 struct komeda_data_flow_cfg *dflow)
447 u32 hsize_in, vsize_in, hsize_out, vsize_out;
450 hsize_in = dflow->in_w;
451 vsize_in = dflow->in_h;
452 hsize_out = dflow->out_w;
453 vsize_out = dflow->out_h;
455 if (!in_range(&scaler->hsize, hsize_in) ||
456 !in_range(&scaler->hsize, hsize_out)) {
457 DRM_DEBUG_ATOMIC("Invalid horizontal sizes");
461 if (!in_range(&scaler->vsize, vsize_in) ||
462 !in_range(&scaler->vsize, vsize_out)) {
463 DRM_DEBUG_ATOMIC("Invalid vertical sizes");
467 /* If input comes from compiz that means the scaling is for writeback
468 * and scaler can not do upscaling for writeback
470 if (has_bit(dflow->input.component->id, KOMEDA_PIPELINE_COMPIZS))
473 max_upscaling = scaler->max_upscaling;
475 if (!scaling_ratio_valid(hsize_in, hsize_out, max_upscaling,
476 scaler->max_downscaling)) {
477 DRM_DEBUG_ATOMIC("Invalid horizontal scaling ratio");
481 if (!scaling_ratio_valid(vsize_in, vsize_out, max_upscaling,
482 scaler->max_downscaling)) {
483 DRM_DEBUG_ATOMIC("Invalid vertical scaling ratio");
487 if (hsize_in > hsize_out || vsize_in > vsize_out) {
488 struct komeda_pipeline *pipe = scaler->base.pipeline;
491 err = pipe->funcs->downscaling_clk_check(pipe,
492 &kcrtc_st->base.adjusted_mode,
493 komeda_crtc_get_aclk(kcrtc_st), dflow);
495 DRM_DEBUG_ATOMIC("aclk can't satisfy the clock requirement of the downscaling\n");
504 komeda_scaler_validate(void *user,
505 struct komeda_crtc_state *kcrtc_st,
506 struct komeda_data_flow_cfg *dflow)
508 struct drm_atomic_state *drm_st = kcrtc_st->base.state;
509 struct komeda_component_state *c_st;
510 struct komeda_scaler_state *st;
511 struct komeda_scaler *scaler;
514 if (!(dflow->en_scaling || dflow->en_img_enhancement))
517 scaler = komeda_component_get_avail_scaler(dflow->input.component,
520 DRM_DEBUG_ATOMIC("No scaler available");
524 err = komeda_scaler_check_cfg(scaler, kcrtc_st, dflow);
528 c_st = komeda_component_get_state_and_set_user(&scaler->base,
529 drm_st, user, kcrtc_st->base.crtc);
531 return PTR_ERR(c_st);
533 st = to_scaler_st(c_st);
535 st->hsize_in = dflow->in_w;
536 st->vsize_in = dflow->in_h;
537 st->hsize_out = dflow->out_w;
538 st->vsize_out = dflow->out_h;
539 st->right_crop = dflow->right_crop;
540 st->left_crop = dflow->left_crop;
541 st->total_vsize_in = dflow->total_in_h;
542 st->total_hsize_in = dflow->total_in_w;
543 st->total_hsize_out = dflow->total_out_w;
545 /* Enable alpha processing if the next stage needs the pixel alpha */
546 st->en_alpha = dflow->pixel_blend_mode != DRM_MODE_BLEND_PIXEL_NONE;
547 st->en_scaling = dflow->en_scaling;
548 st->en_img_enhancement = dflow->en_img_enhancement;
549 st->en_split = dflow->en_split;
550 st->right_part = dflow->right_part;
552 komeda_component_add_input(&st->base, &dflow->input, 0);
553 komeda_component_set_output(&dflow->input, &scaler->base, 0);
557 static void komeda_split_data_flow(struct komeda_scaler *scaler,
558 struct komeda_data_flow_cfg *dflow,
559 struct komeda_data_flow_cfg *l_dflow,
560 struct komeda_data_flow_cfg *r_dflow);
563 komeda_splitter_validate(struct komeda_splitter *splitter,
564 struct drm_connector_state *conn_st,
565 struct komeda_data_flow_cfg *dflow,
566 struct komeda_data_flow_cfg *l_output,
567 struct komeda_data_flow_cfg *r_output)
569 struct komeda_component_state *c_st;
570 struct komeda_splitter_state *st;
573 DRM_DEBUG_ATOMIC("Current HW doesn't support splitter.\n");
577 if (!in_range(&splitter->hsize, dflow->in_w)) {
578 DRM_DEBUG_ATOMIC("split in_w:%d is out of the acceptable range.\n",
583 if (!in_range(&splitter->vsize, dflow->in_h)) {
584 DRM_DEBUG_ATOMIC("split in_h: %d exceeds the acceptable range.\n",
589 c_st = komeda_component_get_state_and_set_user(&splitter->base,
590 conn_st->state, conn_st->connector, conn_st->crtc);
593 return PTR_ERR(c_st);
595 komeda_split_data_flow(splitter->base.pipeline->scalers[0],
596 dflow, l_output, r_output);
598 st = to_splitter_st(c_st);
599 st->hsize = dflow->in_w;
600 st->vsize = dflow->in_h;
601 st->overlap = dflow->overlap;
603 komeda_component_add_input(&st->base, &dflow->input, 0);
604 komeda_component_set_output(&l_output->input, &splitter->base, 0);
605 komeda_component_set_output(&r_output->input, &splitter->base, 1);
611 komeda_merger_validate(struct komeda_merger *merger,
613 struct komeda_crtc_state *kcrtc_st,
614 struct komeda_data_flow_cfg *left_input,
615 struct komeda_data_flow_cfg *right_input,
616 struct komeda_data_flow_cfg *output)
618 struct komeda_component_state *c_st;
619 struct komeda_merger_state *st;
623 DRM_DEBUG_ATOMIC("No merger is available");
627 if (!in_range(&merger->hsize_merged, output->out_w)) {
628 DRM_DEBUG_ATOMIC("merged_w: %d is out of the accepted range.\n",
633 if (!in_range(&merger->vsize_merged, output->out_h)) {
634 DRM_DEBUG_ATOMIC("merged_h: %d is out of the accepted range.\n",
639 c_st = komeda_component_get_state_and_set_user(&merger->base,
640 kcrtc_st->base.state, kcrtc_st->base.crtc, kcrtc_st->base.crtc);
643 return PTR_ERR(c_st);
645 st = to_merger_st(c_st);
646 st->hsize_merged = output->out_w;
647 st->vsize_merged = output->out_h;
649 komeda_component_add_input(c_st, &left_input->input, 0);
650 komeda_component_add_input(c_st, &right_input->input, 1);
651 komeda_component_set_output(&output->input, &merger->base, 0);
656 void pipeline_composition_size(struct komeda_crtc_state *kcrtc_st,
657 u16 *hsize, u16 *vsize)
659 struct drm_display_mode *m = &kcrtc_st->base.adjusted_mode;
662 *hsize = m->hdisplay;
664 *vsize = m->vdisplay;
668 komeda_compiz_set_input(struct komeda_compiz *compiz,
669 struct komeda_crtc_state *kcrtc_st,
670 struct komeda_data_flow_cfg *dflow)
672 struct drm_atomic_state *drm_st = kcrtc_st->base.state;
673 struct komeda_component_state *c_st, *old_st;
674 struct komeda_compiz_input_cfg *cin;
675 u16 compiz_w, compiz_h;
676 int idx = dflow->blending_zorder;
678 pipeline_composition_size(kcrtc_st, &compiz_w, &compiz_h);
679 /* check display rect */
680 if ((dflow->out_x + dflow->out_w > compiz_w) ||
681 (dflow->out_y + dflow->out_h > compiz_h) ||
682 dflow->out_w == 0 || dflow->out_h == 0) {
683 DRM_DEBUG_ATOMIC("invalid disp rect [x=%d, y=%d, w=%d, h=%d]\n",
684 dflow->out_x, dflow->out_y,
685 dflow->out_w, dflow->out_h);
689 c_st = komeda_component_get_state_and_set_user(&compiz->base, drm_st,
690 kcrtc_st->base.crtc, kcrtc_st->base.crtc);
692 return PTR_ERR(c_st);
694 if (komeda_component_check_input(c_st, &dflow->input, idx))
697 cin = &(to_compiz_st(c_st)->cins[idx]);
699 cin->hsize = dflow->out_w;
700 cin->vsize = dflow->out_h;
701 cin->hoffset = dflow->out_x;
702 cin->voffset = dflow->out_y;
703 cin->pixel_blend_mode = dflow->pixel_blend_mode;
704 cin->layer_alpha = dflow->layer_alpha;
706 old_st = komeda_component_get_old_state(&compiz->base, drm_st);
708 /* compare with old to check if this input has been changed */
709 if (WARN_ON(!old_st) ||
710 memcmp(&(to_compiz_st(old_st)->cins[idx]), cin, sizeof(*cin)))
711 c_st->changed_active_inputs |= BIT(idx);
713 komeda_component_add_input(c_st, &dflow->input, idx);
714 komeda_component_set_output(&dflow->input, &compiz->base, 0);
720 komeda_compiz_validate(struct komeda_compiz *compiz,
721 struct komeda_crtc_state *state,
722 struct komeda_data_flow_cfg *dflow)
724 struct komeda_component_state *c_st;
725 struct komeda_compiz_state *st;
727 c_st = komeda_component_get_state_and_set_user(&compiz->base,
728 state->base.state, state->base.crtc, state->base.crtc);
730 return PTR_ERR(c_st);
732 st = to_compiz_st(c_st);
734 pipeline_composition_size(state, &st->hsize, &st->vsize);
736 komeda_component_set_output(&dflow->input, &compiz->base, 0);
738 /* compiz output dflow will be fed to the next pipeline stage, prepare
739 * the data flow configuration for the next stage
742 dflow->in_w = st->hsize;
743 dflow->in_h = st->vsize;
744 dflow->out_w = dflow->in_w;
745 dflow->out_h = dflow->in_h;
746 /* the output data of compiz doesn't have alpha, it only can be
747 * used as bottom layer when blend it with master layers
749 dflow->pixel_blend_mode = DRM_MODE_BLEND_PIXEL_NONE;
750 dflow->layer_alpha = 0xFF;
751 dflow->blending_zorder = 0;
758 komeda_improc_validate(struct komeda_improc *improc,
759 struct komeda_crtc_state *kcrtc_st,
760 struct komeda_data_flow_cfg *dflow)
762 struct drm_crtc *crtc = kcrtc_st->base.crtc;
763 struct drm_crtc_state *crtc_st = &kcrtc_st->base;
764 struct komeda_component_state *c_st;
765 struct komeda_improc_state *st;
767 c_st = komeda_component_get_state_and_set_user(&improc->base,
768 kcrtc_st->base.state, crtc, crtc);
770 return PTR_ERR(c_st);
772 st = to_improc_st(c_st);
774 st->hsize = dflow->in_w;
775 st->vsize = dflow->in_h;
777 if (drm_atomic_crtc_needs_modeset(crtc_st)) {
778 u32 output_depths, output_formats;
779 u32 avail_depths, avail_formats;
781 komeda_crtc_get_color_config(crtc_st, &output_depths,
784 avail_depths = output_depths & improc->supported_color_depths;
785 if (avail_depths == 0) {
786 DRM_DEBUG_ATOMIC("No available color depths, conn depths: 0x%x & display: 0x%x\n",
788 improc->supported_color_depths);
792 avail_formats = output_formats &
793 improc->supported_color_formats;
794 if (!avail_formats) {
795 DRM_DEBUG_ATOMIC("No available color_formats, conn formats 0x%x & display: 0x%x\n",
797 improc->supported_color_formats);
801 st->color_depth = __fls(avail_depths);
802 st->color_format = BIT(__ffs(avail_formats));
805 if (kcrtc_st->base.color_mgmt_changed) {
806 drm_lut_to_fgamma_coeffs(kcrtc_st->base.gamma_lut,
808 drm_ctm_to_coeffs(kcrtc_st->base.ctm, st->ctm_coeffs);
811 komeda_component_add_input(&st->base, &dflow->input, 0);
812 komeda_component_set_output(&dflow->input, &improc->base, 0);
818 komeda_timing_ctrlr_validate(struct komeda_timing_ctrlr *ctrlr,
819 struct komeda_crtc_state *kcrtc_st,
820 struct komeda_data_flow_cfg *dflow)
822 struct drm_crtc *crtc = kcrtc_st->base.crtc;
823 struct komeda_timing_ctrlr_state *st;
824 struct komeda_component_state *c_st;
826 c_st = komeda_component_get_state_and_set_user(&ctrlr->base,
827 kcrtc_st->base.state, crtc, crtc);
829 return PTR_ERR(c_st);
831 st = to_ctrlr_st(c_st);
833 komeda_component_add_input(&st->base, &dflow->input, 0);
834 komeda_component_set_output(&dflow->input, &ctrlr->base, 0);
839 void komeda_complete_data_flow_cfg(struct komeda_layer *layer,
840 struct komeda_data_flow_cfg *dflow,
841 struct drm_framebuffer *fb)
843 struct komeda_scaler *scaler = layer->base.pipeline->scalers[0];
847 dflow->total_in_w = dflow->in_w;
848 dflow->total_in_h = dflow->in_h;
849 dflow->total_out_w = dflow->out_w;
851 /* if format doesn't have alpha, fix blend mode to PIXEL_NONE */
852 if (!fb->format->has_alpha)
853 dflow->pixel_blend_mode = DRM_MODE_BLEND_PIXEL_NONE;
855 if (drm_rotation_90_or_270(dflow->rot))
858 dflow->en_scaling = (w != dflow->out_w) || (h != dflow->out_h);
859 dflow->is_yuv = fb->format->is_yuv;
861 /* try to enable image enhancer if data flow is a 2x+ upscaling */
862 dflow->en_img_enhancement = dflow->out_w >= 2 * w ||
863 dflow->out_h >= 2 * h;
865 /* try to enable split if scaling exceed the scaler's acceptable
866 * input/output range.
868 if (dflow->en_scaling && scaler)
869 dflow->en_split = !in_range(&scaler->hsize, dflow->in_w) ||
870 !in_range(&scaler->hsize, dflow->out_w);
873 static bool merger_is_available(struct komeda_pipeline *pipe,
874 struct komeda_data_flow_cfg *dflow)
876 u32 avail_inputs = pipe->merger ?
877 pipe->merger->base.supported_inputs : 0;
879 return has_bit(dflow->input.component->id, avail_inputs);
882 int komeda_build_layer_data_flow(struct komeda_layer *layer,
883 struct komeda_plane_state *kplane_st,
884 struct komeda_crtc_state *kcrtc_st,
885 struct komeda_data_flow_cfg *dflow)
887 struct drm_plane *plane = kplane_st->base.plane;
888 struct komeda_pipeline *pipe = layer->base.pipeline;
891 DRM_DEBUG_ATOMIC("%s handling [PLANE:%d:%s]: src[x/y:%d/%d, w/h:%d/%d] disp[x/y:%d/%d, w/h:%d/%d]",
892 layer->base.name, plane->base.id, plane->name,
893 dflow->in_x, dflow->in_y, dflow->in_w, dflow->in_h,
894 dflow->out_x, dflow->out_y, dflow->out_w, dflow->out_h);
896 err = komeda_layer_validate(layer, kplane_st, dflow);
900 err = komeda_scaler_validate(plane, kcrtc_st, dflow);
904 /* if split, check if can put the data flow into merger */
905 if (dflow->en_split && merger_is_available(pipe, dflow))
908 err = komeda_compiz_set_input(pipe->compiz, kcrtc_st, dflow);
914 * Split is introduced for workaround scaler's input/output size limitation.
915 * The idea is simple, if one scaler can not fit the requirement, use two.
916 * So split splits the big source image to two half parts (left/right) and do
917 * the scaling by two scaler separately and independently.
918 * But split also imports an edge problem in the middle of the image when
919 * scaling, to avoid it, split isn't a simple half-and-half, but add an extra
920 * pixels (overlap) to both side, after split the left/right will be:
921 * - left: [0, src_length/2 + overlap]
922 * - right: [src_length/2 - overlap, src_length]
923 * The extra overlap do eliminate the edge problem, but which may also generates
924 * unnecessary pixels when scaling, we need to crop them before scaler output
925 * the result to the next stage. and for the how to crop, it depends on the
926 * unneeded pixels, another words the position where overlay has been added.
927 * - left: crop the right
928 * - right: crop the left
930 * The diagram for how to do the split
932 * <---------------------left->out_w ---------------->
933 * |--------------------------------|---right_crop-----| <- left after split
936 * |-----------------|-------------|(Middle)------|-----------------| <- src
937 * /<---overlap--->\ \
939 * right after split->|-----left_crop---|--------------------------------|
940 * ^<------------------- right->out_w --------------->^
942 * NOTE: To consistent with HW the output_w always contains the crop size.
945 static void komeda_split_data_flow(struct komeda_scaler *scaler,
946 struct komeda_data_flow_cfg *dflow,
947 struct komeda_data_flow_cfg *l_dflow,
948 struct komeda_data_flow_cfg *r_dflow)
950 bool r90 = drm_rotation_90_or_270(dflow->rot);
951 bool flip_h = has_flip_h(dflow->rot);
952 u32 l_out, r_out, overlap;
954 memcpy(l_dflow, dflow, sizeof(*dflow));
955 memcpy(r_dflow, dflow, sizeof(*dflow));
957 l_dflow->right_part = false;
958 r_dflow->right_part = true;
959 r_dflow->blending_zorder = dflow->blending_zorder + 1;
962 if (dflow->en_scaling && scaler)
963 overlap += scaler->scaling_split_overlap;
965 /* original dflow may fed into splitter, and which doesn't need
966 * enhancement overlap
968 dflow->overlap = overlap;
970 if (dflow->en_img_enhancement && scaler)
971 overlap += scaler->enh_split_overlap;
973 l_dflow->overlap = overlap;
974 r_dflow->overlap = overlap;
976 /* split the origin content */
977 /* left/right here always means the left/right part of display image,
978 * not the source Image
980 /* DRM rotation is anti-clockwise */
982 if (dflow->en_scaling) {
983 l_dflow->in_h = ALIGN(dflow->in_h, 2) / 2 + l_dflow->overlap;
984 r_dflow->in_h = l_dflow->in_h;
985 } else if (dflow->en_img_enhancement) {
987 l_dflow->in_h = ALIGN(dflow->in_h, 2) / 2 + l_dflow->overlap;
988 r_dflow->in_h = dflow->in_h / 2 + r_dflow->overlap;
990 /* split without scaler, no overlap */
991 l_dflow->in_h = ALIGN(((dflow->in_h + 1) >> 1), 2);
992 r_dflow->in_h = dflow->in_h - l_dflow->in_h;
995 /* Consider YUV format, after split, the split source w/h
996 * may not aligned to 2. we have two choices for such case.
997 * 1. scaler is enabled (overlap != 0), we can do a alignment
998 * both left/right and crop the extra data by scaler.
999 * 2. scaler is not enabled, only align the split left
1000 * src/disp, and the rest part assign to right
1002 if ((overlap != 0) && dflow->is_yuv) {
1003 l_dflow->in_h = ALIGN(l_dflow->in_h, 2);
1004 r_dflow->in_h = ALIGN(r_dflow->in_h, 2);
1008 l_dflow->in_y = dflow->in_y + dflow->in_h - l_dflow->in_h;
1010 r_dflow->in_y = dflow->in_y + dflow->in_h - r_dflow->in_h;
1012 if (dflow->en_scaling) {
1013 l_dflow->in_w = ALIGN(dflow->in_w, 2) / 2 + l_dflow->overlap;
1014 r_dflow->in_w = l_dflow->in_w;
1015 } else if (dflow->en_img_enhancement) {
1016 l_dflow->in_w = ALIGN(dflow->in_w, 2) / 2 + l_dflow->overlap;
1017 r_dflow->in_w = dflow->in_w / 2 + r_dflow->overlap;
1019 l_dflow->in_w = ALIGN(((dflow->in_w + 1) >> 1), 2);
1020 r_dflow->in_w = dflow->in_w - l_dflow->in_w;
1023 /* do YUV alignment when scaler enabled */
1024 if ((overlap != 0) && dflow->is_yuv) {
1025 l_dflow->in_w = ALIGN(l_dflow->in_w, 2);
1026 r_dflow->in_w = ALIGN(r_dflow->in_w, 2);
1029 /* on flip_h, the left display content from the right-source */
1031 l_dflow->in_x = dflow->in_w + dflow->in_x - l_dflow->in_w;
1033 r_dflow->in_x = dflow->in_w + dflow->in_x - r_dflow->in_w;
1036 /* split the disp_rect */
1037 if (dflow->en_scaling || dflow->en_img_enhancement)
1038 l_dflow->out_w = ((dflow->out_w + 1) >> 1);
1040 l_dflow->out_w = ALIGN(((dflow->out_w + 1) >> 1), 2);
1042 r_dflow->out_w = dflow->out_w - l_dflow->out_w;
1044 l_dflow->out_x = dflow->out_x;
1045 r_dflow->out_x = l_dflow->out_w + l_dflow->out_x;
1047 /* calculate the scaling crop */
1048 /* left scaler output more data and do crop */
1050 l_out = (dflow->out_w * l_dflow->in_h) / dflow->in_h;
1051 r_out = (dflow->out_w * r_dflow->in_h) / dflow->in_h;
1053 l_out = (dflow->out_w * l_dflow->in_w) / dflow->in_w;
1054 r_out = (dflow->out_w * r_dflow->in_w) / dflow->in_w;
1057 l_dflow->left_crop = 0;
1058 l_dflow->right_crop = l_out - l_dflow->out_w;
1059 r_dflow->left_crop = r_out - r_dflow->out_w;
1060 r_dflow->right_crop = 0;
1062 /* out_w includes the crop length */
1063 l_dflow->out_w += l_dflow->right_crop + l_dflow->left_crop;
1064 r_dflow->out_w += r_dflow->right_crop + r_dflow->left_crop;
1067 /* For layer split, a plane state will be split to two data flows and handled
1068 * by two separated komeda layer input pipelines. komeda supports two types of
1070 * - none-scaling split:
1072 * plane_state compiz-> ...
1076 * / layer-left -> scaler->\
1077 * plane_state merger -> compiz-> ...
1078 * \ layer-right-> scaler->/
1080 * Since merger only supports scaler as input, so for none-scaling split, two
1081 * layer data flows will be output to compiz directly. for scaling_split, two
1082 * data flow will be merged by merger firstly, then merger outputs one merged
1083 * data flow to compiz.
1085 int komeda_build_layer_split_data_flow(struct komeda_layer *left,
1086 struct komeda_plane_state *kplane_st,
1087 struct komeda_crtc_state *kcrtc_st,
1088 struct komeda_data_flow_cfg *dflow)
1090 struct drm_plane *plane = kplane_st->base.plane;
1091 struct komeda_pipeline *pipe = left->base.pipeline;
1092 struct komeda_layer *right = left->right;
1093 struct komeda_data_flow_cfg l_dflow, r_dflow;
1096 komeda_split_data_flow(pipe->scalers[0], dflow, &l_dflow, &r_dflow);
1098 DRM_DEBUG_ATOMIC("Assign %s + %s to [PLANE:%d:%s]: "
1099 "src[x/y:%d/%d, w/h:%d/%d] disp[x/y:%d/%d, w/h:%d/%d]",
1100 left->base.name, right->base.name,
1101 plane->base.id, plane->name,
1102 dflow->in_x, dflow->in_y, dflow->in_w, dflow->in_h,
1103 dflow->out_x, dflow->out_y, dflow->out_w, dflow->out_h);
1105 err = komeda_build_layer_data_flow(left, kplane_st, kcrtc_st, &l_dflow);
1109 err = komeda_build_layer_data_flow(right, kplane_st, kcrtc_st, &r_dflow);
1113 /* The rotation has been handled by layer, so adjusted the data flow */
1114 komeda_rotate_data_flow(dflow, dflow->rot);
1116 /* left and right dflow has been merged to compiz already,
1117 * no need merger to merge them anymore.
1119 if (r_dflow.input.component == l_dflow.input.component)
1122 /* line merger path */
1123 err = komeda_merger_validate(pipe->merger, plane, kcrtc_st,
1124 &l_dflow, &r_dflow, dflow);
1128 err = komeda_compiz_set_input(pipe->compiz, kcrtc_st, dflow);
1133 /* writeback data path: compiz -> scaler -> wb_layer -> memory */
1134 int komeda_build_wb_data_flow(struct komeda_layer *wb_layer,
1135 struct drm_connector_state *conn_st,
1136 struct komeda_crtc_state *kcrtc_st,
1137 struct komeda_data_flow_cfg *dflow)
1139 struct drm_connector *conn = conn_st->connector;
1142 err = komeda_scaler_validate(conn, kcrtc_st, dflow);
1146 return komeda_wb_layer_validate(wb_layer, conn_st, dflow);
1149 /* writeback scaling split data path:
1151 * compiz -> splitter merger -> wb_layer -> memory
1154 int komeda_build_wb_split_data_flow(struct komeda_layer *wb_layer,
1155 struct drm_connector_state *conn_st,
1156 struct komeda_crtc_state *kcrtc_st,
1157 struct komeda_data_flow_cfg *dflow)
1159 struct komeda_pipeline *pipe = wb_layer->base.pipeline;
1160 struct drm_connector *conn = conn_st->connector;
1161 struct komeda_data_flow_cfg l_dflow, r_dflow;
1164 err = komeda_splitter_validate(pipe->splitter, conn_st,
1165 dflow, &l_dflow, &r_dflow);
1168 err = komeda_scaler_validate(conn, kcrtc_st, &l_dflow);
1172 err = komeda_scaler_validate(conn, kcrtc_st, &r_dflow);
1176 err = komeda_merger_validate(pipe->merger, conn_st, kcrtc_st,
1177 &l_dflow, &r_dflow, dflow);
1181 return komeda_wb_layer_validate(wb_layer, conn_st, dflow);
1184 /* build display output data flow, the data path is:
1185 * compiz -> improc -> timing_ctrlr
1187 int komeda_build_display_data_flow(struct komeda_crtc *kcrtc,
1188 struct komeda_crtc_state *kcrtc_st)
1190 struct komeda_pipeline *master = kcrtc->master;
1191 struct komeda_pipeline *slave = kcrtc->slave;
1192 struct komeda_data_flow_cfg m_dflow; /* master data flow */
1193 struct komeda_data_flow_cfg s_dflow; /* slave data flow */
1196 memset(&m_dflow, 0, sizeof(m_dflow));
1197 memset(&s_dflow, 0, sizeof(s_dflow));
1199 if (slave && has_bit(slave->id, kcrtc_st->active_pipes)) {
1200 err = komeda_compiz_validate(slave->compiz, kcrtc_st, &s_dflow);
1204 /* merge the slave dflow into master pipeline */
1205 err = komeda_compiz_set_input(master->compiz, kcrtc_st,
1211 err = komeda_compiz_validate(master->compiz, kcrtc_st, &m_dflow);
1215 err = komeda_improc_validate(master->improc, kcrtc_st, &m_dflow);
1219 err = komeda_timing_ctrlr_validate(master->ctrlr, kcrtc_st, &m_dflow);
1227 komeda_pipeline_unbound_components(struct komeda_pipeline *pipe,
1228 struct komeda_pipeline_state *new)
1230 struct drm_atomic_state *drm_st = new->obj.state;
1231 struct komeda_pipeline_state *old = priv_to_pipe_st(pipe->obj.state);
1232 struct komeda_component_state *c_st;
1233 struct komeda_component *c;
1235 unsigned long disabling_comps;
1239 disabling_comps = (~new->active_comps) & old->active_comps;
1241 /* unbound all disabling component */
1242 for_each_set_bit(id, &disabling_comps, 32) {
1243 c = komeda_pipeline_get_component(pipe, id);
1244 c_st = komeda_component_get_state_and_set_user(c,
1245 drm_st, NULL, new->crtc);
1246 WARN_ON(IS_ERR(c_st));
1250 /* release unclaimed pipeline resource */
1251 int komeda_release_unclaimed_resources(struct komeda_pipeline *pipe,
1252 struct komeda_crtc_state *kcrtc_st)
1254 struct drm_atomic_state *drm_st = kcrtc_st->base.state;
1255 struct komeda_pipeline_state *st;
1257 /* ignore the pipeline which is not affected */
1258 if (!pipe || !has_bit(pipe->id, kcrtc_st->affected_pipes))
1261 if (has_bit(pipe->id, kcrtc_st->active_pipes))
1262 st = komeda_pipeline_get_new_state(pipe, drm_st);
1264 st = komeda_pipeline_get_state_and_set_crtc(pipe, drm_st, NULL);
1266 if (WARN_ON(IS_ERR_OR_NULL(st)))
1269 komeda_pipeline_unbound_components(pipe, st);
1274 /* Since standalone disabled components must be disabled separately and in the
1275 * last, So a complete disable operation may needs to call pipeline_disable
1276 * twice (two phase disabling).
1277 * Phase 1: disable the common components, flush it.
1278 * Phase 2: disable the standalone disabled components, flush it.
1281 * true: disable is not complete, needs a phase 2 disable.
1282 * false: disable is complete.
1284 bool komeda_pipeline_disable(struct komeda_pipeline *pipe,
1285 struct drm_atomic_state *old_state)
1287 struct komeda_pipeline_state *old;
1288 struct komeda_component *c;
1289 struct komeda_component_state *c_st;
1291 unsigned long disabling_comps;
1293 old = komeda_pipeline_get_old_state(pipe, old_state);
1295 disabling_comps = old->active_comps &
1296 (~pipe->standalone_disabled_comps);
1297 if (!disabling_comps)
1298 disabling_comps = old->active_comps &
1299 pipe->standalone_disabled_comps;
1301 DRM_DEBUG_ATOMIC("PIPE%d: active_comps: 0x%x, disabling_comps: 0x%lx.\n",
1302 pipe->id, old->active_comps, disabling_comps);
1304 for_each_set_bit(id, &disabling_comps, 32) {
1305 c = komeda_pipeline_get_component(pipe, id);
1306 c_st = priv_to_comp_st(c->obj.state);
1309 * If we disabled a component then all active_inputs should be
1310 * put in the list of changed_active_inputs, so they get
1312 * This usually happens during a modeset when the pipeline is
1313 * first disabled and then the actual state gets committed
1316 c_st->changed_active_inputs |= c_st->active_inputs;
1318 c->funcs->disable(c);
1321 /* Update the pipeline state, if there are components that are still
1322 * active, return true for calling the phase 2 disable.
1324 old->active_comps &= ~disabling_comps;
1326 return old->active_comps ? true : false;
1329 void komeda_pipeline_update(struct komeda_pipeline *pipe,
1330 struct drm_atomic_state *old_state)
1332 struct komeda_pipeline_state *new = priv_to_pipe_st(pipe->obj.state);
1333 struct komeda_pipeline_state *old;
1334 struct komeda_component *c;
1336 unsigned long changed_comps;
1338 old = komeda_pipeline_get_old_state(pipe, old_state);
1340 changed_comps = new->active_comps | old->active_comps;
1342 DRM_DEBUG_ATOMIC("PIPE%d: active_comps: 0x%x, changed: 0x%lx.\n",
1343 pipe->id, new->active_comps, changed_comps);
1345 for_each_set_bit(id, &changed_comps, 32) {
1346 c = komeda_pipeline_get_component(pipe, id);
1348 if (new->active_comps & BIT(c->id))
1349 c->funcs->update(c, priv_to_comp_st(c->obj.state));
1351 c->funcs->disable(c);