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1/* SPDX-License-Identifier: GPL-2.0 */
2/*
3 * (C) COPYRIGHT 2018 ARM Limited. All rights reserved.
4 * Author: James.Qian.Wang <james.qian.wang@arm.com>
5 *
6 */
7#ifndef _KOMEDA_PIPELINE_H_
8#define _KOMEDA_PIPELINE_H_
9
10#include <linux/types.h>
11#include <drm/drm_atomic.h>
12#include <drm/drm_atomic_helper.h>
13#include "malidp_utils.h"
14
15#define KOMEDA_MAX_PIPELINES 2
16#define KOMEDA_PIPELINE_MAX_LAYERS 4
17#define KOMEDA_PIPELINE_MAX_SCALERS 2
18#define KOMEDA_COMPONENT_N_INPUTS 5
19
20/* pipeline component IDs */
21enum {
22 KOMEDA_COMPONENT_LAYER0 = 0,
23 KOMEDA_COMPONENT_LAYER1 = 1,
24 KOMEDA_COMPONENT_LAYER2 = 2,
25 KOMEDA_COMPONENT_LAYER3 = 3,
26 KOMEDA_COMPONENT_WB_LAYER = 7, /* write back layer */
27 KOMEDA_COMPONENT_SCALER0 = 8,
28 KOMEDA_COMPONENT_SCALER1 = 9,
29 KOMEDA_COMPONENT_SPLITTER = 12,
30 KOMEDA_COMPONENT_MERGER = 14,
31 KOMEDA_COMPONENT_COMPIZ0 = 16, /* compositor */
32 KOMEDA_COMPONENT_COMPIZ1 = 17,
33 KOMEDA_COMPONENT_IPS0 = 20, /* post image processor */
34 KOMEDA_COMPONENT_IPS1 = 21,
35 KOMEDA_COMPONENT_TIMING_CTRLR = 22, /* timing controller */
36};
37
38#define KOMEDA_PIPELINE_LAYERS (BIT(KOMEDA_COMPONENT_LAYER0) |\
39 BIT(KOMEDA_COMPONENT_LAYER1) |\
40 BIT(KOMEDA_COMPONENT_LAYER2) |\
41 BIT(KOMEDA_COMPONENT_LAYER3))
42
43#define KOMEDA_PIPELINE_SCALERS (BIT(KOMEDA_COMPONENT_SCALER0) |\
44 BIT(KOMEDA_COMPONENT_SCALER1))
45
46#define KOMEDA_PIPELINE_COMPIZS (BIT(KOMEDA_COMPONENT_COMPIZ0) |\
47 BIT(KOMEDA_COMPONENT_COMPIZ1))
48
49#define KOMEDA_PIPELINE_IMPROCS (BIT(KOMEDA_COMPONENT_IPS0) |\
50 BIT(KOMEDA_COMPONENT_IPS1))
51struct komeda_component;
52struct komeda_component_state;
53
54/** komeda_component_funcs - component control functions */
55struct komeda_component_funcs {
56 /** @validate: optional,
57 * component may has special requirements or limitations, this function
58 * supply HW the ability to do the further HW specific check.
59 */
60 int (*validate)(struct komeda_component *c,
61 struct komeda_component_state *state);
62 /** @update: update is a active update */
63 void (*update)(struct komeda_component *c,
64 struct komeda_component_state *state);
65 /** @disable: disable component */
66 void (*disable)(struct komeda_component *c);
67 /** @dump_register: Optional, dump registers to seq_file */
68 void (*dump_register)(struct komeda_component *c, struct seq_file *seq);
69};
70
71/**
72 * struct komeda_component
73 *
74 * struct komeda_component describe the data flow capabilities for how to link a
75 * component into the display pipeline.
76 * all specified components are subclass of this structure.
77 */
78struct komeda_component {
79 /** @obj: treat component as private obj */
80 struct drm_private_obj obj;
81 /** @pipeline: the komeda pipeline this component belongs to */
82 struct komeda_pipeline *pipeline;
83 /** @name: component name */
84 char name[32];
85 /**
86 * @reg:
87 * component register base,
88 * which is initialized by chip and used by chip only
89 */
90 u32 __iomem *reg;
91 /** @id: component id */
92 u32 id;
93 /**
94 * @hw_id: component hw id,
95 * which is initialized by chip and used by chip only
96 */
97 u32 hw_id;
98
99 /**
100 * @max_active_inputs:
101 * @max_active_outputs:
102 *
103 * maximum number of inputs/outputs that can be active at the same time
104 * Note:
105 * the number isn't the bit number of @supported_inputs or
106 * @supported_outputs, but may be less than it, since component may not
107 * support enabling all @supported_inputs/outputs at the same time.
108 */
109 u8 max_active_inputs;
110 /** @max_active_outputs: maximum number of outputs */
111 u8 max_active_outputs;
112 /**
113 * @supported_inputs:
114 * @supported_outputs:
115 *
116 * bitmask of BIT(component->id) for the supported inputs/outputs,
117 * describes the possibilities of how a component is linked into a
118 * pipeline.
119 */
120 u32 supported_inputs;
121 /** @supported_outputs: bitmask of supported output componenet ids */
122 u32 supported_outputs;
123
124 /**
125 * @funcs: chip functions to access HW
126 */
127 const struct komeda_component_funcs *funcs;
128};
129
130/**
131 * struct komeda_component_output
132 *
133 * a component has multiple outputs, if want to know where the data
134 * comes from, only know the component is not enough, we still need to know
135 * its output port
136 */
137struct komeda_component_output {
138 /** @component: indicate which component the data comes from */
139 struct komeda_component *component;
140 /**
141 * @output_port:
142 * the output port of the &komeda_component_output.component
143 */
144 u8 output_port;
145};
146
147/**
148 * struct komeda_component_state
149 *
150 * component_state is the data flow configuration of the component, and it's
151 * the superclass of all specific component_state like @komeda_layer_state,
152 * @komeda_scaler_state
153 */
154struct komeda_component_state {
155 /** @obj: tracking component_state by drm_atomic_state */
156 struct drm_private_state obj;
157 /** @component: backpointer to the component */
158 struct komeda_component *component;
159 /**
160 * @binding_user:
161 * currently bound user, the user can be @crtc, @plane or @wb_conn,
162 * which is valid decided by @component and @inputs
163 *
164 * - Layer: its user always is plane.
165 * - compiz/improc/timing_ctrlr: the user is crtc.
166 * - wb_layer: wb_conn;
167 * - scaler: plane when input is layer, wb_conn if input is compiz.
168 */
169 union {
170 /** @crtc: backpointer for user crtc */
171 struct drm_crtc *crtc;
172 /** @plane: backpointer for user plane */
173 struct drm_plane *plane;
174 /** @wb_conn: backpointer for user wb_connector */
175 struct drm_connector *wb_conn;
176 void *binding_user;
177 };
178
179 /**
180 * @active_inputs:
181 *
182 * active_inputs is bitmask of @inputs index
183 *
184 * - active_inputs = changed_active_inputs | unchanged_active_inputs
185 * - affected_inputs = old->active_inputs | new->active_inputs;
186 * - disabling_inputs = affected_inputs ^ active_inputs;
187 * - changed_inputs = disabling_inputs | changed_active_inputs;
188 *
189 * NOTE:
190 * changed_inputs doesn't include all active_input but only
191 * @changed_active_inputs, and this bitmask can be used in chip
192 * level for dirty update.
193 */
194 u16 active_inputs;
195 /** @changed_active_inputs: bitmask of the changed @active_inputs */
196 u16 changed_active_inputs;
197 /** @affected_inputs: bitmask for affected @inputs */
198 u16 affected_inputs;
199 /**
200 * @inputs:
201 *
202 * the specific inputs[i] only valid on BIT(i) has been set in
203 * @active_inputs, if not the inputs[i] is undefined.
204 */
205 struct komeda_component_output inputs[KOMEDA_COMPONENT_N_INPUTS];
206};
207
208static inline u16 component_disabling_inputs(struct komeda_component_state *st)
209{
210 return st->affected_inputs ^ st->active_inputs;
211}
212
213static inline u16 component_changed_inputs(struct komeda_component_state *st)
214{
215 return component_disabling_inputs(st) | st->changed_active_inputs;
216}
217
218#define for_each_changed_input(st, i) \
219 for ((i) = 0; (i) < (st)->component->max_active_inputs; (i)++) \
220 if (has_bit((i), component_changed_inputs(st)))
221
222#define to_comp(__c) (((__c) == NULL) ? NULL : &((__c)->base))
223#define to_cpos(__c) ((struct komeda_component **)&(__c))
224
225struct komeda_layer {
226 struct komeda_component base;
227 /* accepted h/v input range before rotation */
228 struct malidp_range hsize_in, vsize_in;
229 u32 layer_type; /* RICH, SIMPLE or WB */
230 u32 supported_rots;
231 /* komeda supports layer split which splits a whole image to two parts
232 * left and right and handle them by two individual layer processors
233 * Note: left/right are always according to the final display rect,
234 * not the source buffer.
235 */
236 struct komeda_layer *right;
237};
238
239struct komeda_layer_state {
240 struct komeda_component_state base;
241 /* layer specific configuration state */
242 u16 hsize, vsize;
243 u32 rot;
244 u16 afbc_crop_l;
245 u16 afbc_crop_r;
246 u16 afbc_crop_t;
247 u16 afbc_crop_b;
248 dma_addr_t addr[3];
249};
250
251struct komeda_scaler {
252 struct komeda_component base;
253 struct malidp_range hsize, vsize;
254 u32 max_upscaling;
255 u32 max_downscaling;
256 u8 scaling_split_overlap; /* split overlap for scaling */
257 u8 enh_split_overlap; /* split overlap for image enhancement */
258};
259
260struct komeda_scaler_state {
261 struct komeda_component_state base;
262 u16 hsize_in, vsize_in;
263 u16 hsize_out, vsize_out;
264 u16 total_hsize_in, total_vsize_in;
265 u16 total_hsize_out; /* total_xxxx are size before split */
266 u16 left_crop, right_crop;
267 u8 en_scaling : 1,
268 en_alpha : 1, /* enable alpha processing */
269 en_img_enhancement : 1,
270 en_split : 1,
271 right_part : 1; /* right part of split image */
272};
273
274struct komeda_compiz {
275 struct komeda_component base;
276 struct malidp_range hsize, vsize;
277};
278
279struct komeda_compiz_input_cfg {
280 u16 hsize, vsize;
281 u16 hoffset, voffset;
282 u8 pixel_blend_mode, layer_alpha;
283};
284
285struct komeda_compiz_state {
286 struct komeda_component_state base;
287 /* composition size */
288 u16 hsize, vsize;
289 struct komeda_compiz_input_cfg cins[KOMEDA_COMPONENT_N_INPUTS];
290};
291
292struct komeda_merger {
293 struct komeda_component base;
294 struct malidp_range hsize_merged;
295 struct malidp_range vsize_merged;
296};
297
298struct komeda_merger_state {
299 struct komeda_component_state base;
300 u16 hsize_merged;
301 u16 vsize_merged;
302};
303
304struct komeda_splitter {
305 struct komeda_component base;
306 struct malidp_range hsize, vsize;
307};
308
309struct komeda_splitter_state {
310 struct komeda_component_state base;
311 u16 hsize, vsize;
312 u16 overlap;
313};
314
315struct komeda_improc {
316 struct komeda_component base;
317 u32 supported_color_formats; /* DRM_RGB/YUV444/YUV420*/
318 u32 supported_color_depths; /* BIT(8) | BIT(10)*/
319 u8 supports_degamma : 1;
320 u8 supports_csc : 1;
321 u8 supports_gamma : 1;
322};
323
324struct komeda_improc_state {
325 struct komeda_component_state base;
326 u16 hsize, vsize;
327};
328
329/* display timing controller */
330struct komeda_timing_ctrlr {
331 struct komeda_component base;
332 u8 supports_dual_link : 1;
333};
334
335struct komeda_timing_ctrlr_state {
336 struct komeda_component_state base;
337};
338
339/* Why define A separated structure but not use plane_state directly ?
340 * 1. Komeda supports layer_split which means a plane_state can be split and
341 * handled by two layers, one layer only handle half of plane image.
342 * 2. Fix up the user properties according to HW's capabilities, like user
343 * set rotation to R180, but HW only supports REFLECT_X+Y. the rot here is
344 * after drm_rotation_simplify()
345 */
346struct komeda_data_flow_cfg {
347 struct komeda_component_output input;
348 u16 in_x, in_y, in_w, in_h;
349 u32 out_x, out_y, out_w, out_h;
350 u16 total_in_h, total_in_w;
351 u16 total_out_w;
352 u16 left_crop, right_crop, overlap;
353 u32 rot;
354 int blending_zorder;
355 u8 pixel_blend_mode, layer_alpha;
356 u8 en_scaling : 1,
357 en_img_enhancement : 1,
358 en_split : 1,
359 is_yuv : 1,
360 right_part : 1; /* right part of display image if split enabled */
361};
362
363struct komeda_pipeline_funcs {
364 /* check if the aclk (main engine clock) can satisfy the clock
365 * requirements of the downscaling that specified by dflow
366 */
367 int (*downscaling_clk_check)(struct komeda_pipeline *pipe,
368 struct drm_display_mode *mode,
369 unsigned long aclk_rate,
370 struct komeda_data_flow_cfg *dflow);
371 /* dump_register: Optional, dump registers to seq_file */
372 void (*dump_register)(struct komeda_pipeline *pipe,
373 struct seq_file *sf);
374};
375
376/**
377 * struct komeda_pipeline
378 *
379 * Represent a complete display pipeline and hold all functional components.
380 */
381struct komeda_pipeline {
382 /** @obj: link pipeline as private obj of drm_atomic_state */
383 struct drm_private_obj obj;
384 /** @mdev: the parent komeda_dev */
385 struct komeda_dev *mdev;
386 /** @pxlclk: pixel clock */
387 struct clk *pxlclk;
388 /** @id: pipeline id */
389 int id;
390 /** @avail_comps: available components mask of pipeline */
391 u32 avail_comps;
392 /** @n_layers: the number of layer on @layers */
393 int n_layers;
394 /** @layers: the pipeline layers */
395 struct komeda_layer *layers[KOMEDA_PIPELINE_MAX_LAYERS];
396 /** @n_scalers: the number of scaler on @scalers */
397 int n_scalers;
398 /** @scalers: the pipeline scalers */
399 struct komeda_scaler *scalers[KOMEDA_PIPELINE_MAX_SCALERS];
400 /** @compiz: compositor */
401 struct komeda_compiz *compiz;
402 /** @splitter: for split the compiz output to two half data flows */
403 struct komeda_splitter *splitter;
404 /** @merger: merger */
405 struct komeda_merger *merger;
406 /** @wb_layer: writeback layer */
407 struct komeda_layer *wb_layer;
408 /** @improc: post image processor */
409 struct komeda_improc *improc;
410 /** @ctrlr: timing controller */
411 struct komeda_timing_ctrlr *ctrlr;
412 /** @funcs: chip private pipeline functions */
413 const struct komeda_pipeline_funcs *funcs;
414
415 /** @of_node: pipeline dt node */
416 struct device_node *of_node;
417 /** @of_output_port: pipeline output port */
418 struct device_node *of_output_port;
419 /** @of_output_links: output connector device nodes */
420 struct device_node *of_output_links[2];
421 /** @dual_link: true if of_output_links[0] and [1] are both valid */
422 bool dual_link;
423};
424
425/**
426 * struct komeda_pipeline_state
427 *
428 * NOTE:
429 * Unlike the pipeline, pipeline_state doesn’t gather any component_state
430 * into it. It because all component will be managed by drm_atomic_state.
431 */
432struct komeda_pipeline_state {
433 /** @obj: tracking pipeline_state by drm_atomic_state */
434 struct drm_private_state obj;
435 /** @pipe: backpointer to the pipeline */
436 struct komeda_pipeline *pipe;
437 /** @crtc: currently bound crtc */
438 struct drm_crtc *crtc;
439 /**
440 * @active_comps:
441 *
442 * bitmask - BIT(component->id) of active components
443 */
444 u32 active_comps;
445};
446
447#define to_layer(c) container_of(c, struct komeda_layer, base)
448#define to_compiz(c) container_of(c, struct komeda_compiz, base)
449#define to_scaler(c) container_of(c, struct komeda_scaler, base)
450#define to_splitter(c) container_of(c, struct komeda_splitter, base)
451#define to_merger(c) container_of(c, struct komeda_merger, base)
452#define to_improc(c) container_of(c, struct komeda_improc, base)
453#define to_ctrlr(c) container_of(c, struct komeda_timing_ctrlr, base)
454
455#define to_layer_st(c) container_of(c, struct komeda_layer_state, base)
456#define to_compiz_st(c) container_of(c, struct komeda_compiz_state, base)
457#define to_scaler_st(c) container_of(c, struct komeda_scaler_state, base)
458#define to_splitter_st(c) container_of(c, struct komeda_splitter_state, base)
459#define to_merger_st(c) container_of(c, struct komeda_merger_state, base)
460#define to_improc_st(c) container_of(c, struct komeda_improc_state, base)
461#define to_ctrlr_st(c) container_of(c, struct komeda_timing_ctrlr_state, base)
462
463#define priv_to_comp_st(o) container_of(o, struct komeda_component_state, obj)
464#define priv_to_pipe_st(o) container_of(o, struct komeda_pipeline_state, obj)
465
466/* pipeline APIs */
467struct komeda_pipeline *
468komeda_pipeline_add(struct komeda_dev *mdev, size_t size,
469 const struct komeda_pipeline_funcs *funcs);
470void komeda_pipeline_destroy(struct komeda_dev *mdev,
471 struct komeda_pipeline *pipe);
472struct komeda_pipeline *
473komeda_pipeline_get_slave(struct komeda_pipeline *master);
474int komeda_assemble_pipelines(struct komeda_dev *mdev);
475struct komeda_component *
476komeda_pipeline_get_component(struct komeda_pipeline *pipe, int id);
477struct komeda_component *
478komeda_pipeline_get_first_component(struct komeda_pipeline *pipe,
479 u32 comp_mask);
480
481void komeda_pipeline_dump_register(struct komeda_pipeline *pipe,
482 struct seq_file *sf);
483
484/* component APIs */
485extern __printf(10, 11)
486struct komeda_component *
487komeda_component_add(struct komeda_pipeline *pipe,
488 size_t comp_sz, u32 id, u32 hw_id,
489 const struct komeda_component_funcs *funcs,
490 u8 max_active_inputs, u32 supported_inputs,
491 u8 max_active_outputs, u32 __iomem *reg,
492 const char *name_fmt, ...);
493
494void komeda_component_destroy(struct komeda_dev *mdev,
495 struct komeda_component *c);
496
497static inline struct komeda_component *
498komeda_component_pickup_output(struct komeda_component *c, u32 avail_comps)
499{
500 u32 avail_inputs = c->supported_outputs & (avail_comps);
501
502 return komeda_pipeline_get_first_component(c->pipeline, avail_inputs);
503}
504
505struct komeda_plane_state;
506struct komeda_crtc_state;
507struct komeda_crtc;
508
509void pipeline_composition_size(struct komeda_crtc_state *kcrtc_st,
510 u16 *hsize, u16 *vsize);
511
512int komeda_build_layer_data_flow(struct komeda_layer *layer,
513 struct komeda_plane_state *kplane_st,
514 struct komeda_crtc_state *kcrtc_st,
515 struct komeda_data_flow_cfg *dflow);
516int komeda_build_wb_data_flow(struct komeda_layer *wb_layer,
517 struct drm_connector_state *conn_st,
518 struct komeda_crtc_state *kcrtc_st,
519 struct komeda_data_flow_cfg *dflow);
520int komeda_build_display_data_flow(struct komeda_crtc *kcrtc,
521 struct komeda_crtc_state *kcrtc_st);
522
523int komeda_build_layer_split_data_flow(struct komeda_layer *left,
524 struct komeda_plane_state *kplane_st,
525 struct komeda_crtc_state *kcrtc_st,
526 struct komeda_data_flow_cfg *dflow);
527int komeda_build_wb_split_data_flow(struct komeda_layer *wb_layer,
528 struct drm_connector_state *conn_st,
529 struct komeda_crtc_state *kcrtc_st,
530 struct komeda_data_flow_cfg *dflow);
531
532int komeda_release_unclaimed_resources(struct komeda_pipeline *pipe,
533 struct komeda_crtc_state *kcrtc_st);
534
535struct komeda_pipeline_state *
536komeda_pipeline_get_old_state(struct komeda_pipeline *pipe,
537 struct drm_atomic_state *state);
538void komeda_pipeline_disable(struct komeda_pipeline *pipe,
539 struct drm_atomic_state *old_state);
540void komeda_pipeline_update(struct komeda_pipeline *pipe,
541 struct drm_atomic_state *old_state);
542
543void komeda_complete_data_flow_cfg(struct komeda_layer *layer,
544 struct komeda_data_flow_cfg *dflow,
545 struct drm_framebuffer *fb);
546
547#endif /* _KOMEDA_PIPELINE_H_*/