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>
7 #ifndef _KOMEDA_PIPELINE_H_
8 #define _KOMEDA_PIPELINE_H_
10 #include <linux/types.h>
11 #include <drm/drm_atomic.h>
12 #include <drm/drm_atomic_helper.h>
13 #include "malidp_utils.h"
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
20 /* pipeline component IDs */
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 */
38 #define KOMEDA_PIPELINE_LAYERS (BIT(KOMEDA_COMPONENT_LAYER0) |\
39 BIT(KOMEDA_COMPONENT_LAYER1) |\
40 BIT(KOMEDA_COMPONENT_LAYER2) |\
41 BIT(KOMEDA_COMPONENT_LAYER3))
43 #define KOMEDA_PIPELINE_SCALERS (BIT(KOMEDA_COMPONENT_SCALER0) |\
44 BIT(KOMEDA_COMPONENT_SCALER1))
46 #define KOMEDA_PIPELINE_COMPIZS (BIT(KOMEDA_COMPONENT_COMPIZ0) |\
47 BIT(KOMEDA_COMPONENT_COMPIZ1))
49 #define KOMEDA_PIPELINE_IMPROCS (BIT(KOMEDA_COMPONENT_IPS0) |\
50 BIT(KOMEDA_COMPONENT_IPS1))
51 struct komeda_component;
52 struct komeda_component_state;
54 /** komeda_component_funcs - component control functions */
55 struct 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.
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);
72 * struct komeda_component
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.
78 struct 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 */
87 * component register base,
88 * which is initialized by chip and used by chip only
91 /** @id: component id */
93 /** @hw_ic: component hw id,
94 * which is initialized by chip and used by chip only
100 * @max_active_outpus:
102 * maximum number of inputs/outputs that can be active in the same time
104 * the number isn't the bit number of @supported_inputs or
105 * @supported_outputs, but may be less than it, since component may not
106 * support enabling all @supported_inputs/outputs at the same time.
108 u8 max_active_inputs;
109 u8 max_active_outputs;
112 * @supported_outputs:
114 * bitmask of BIT(component->id) for the supported inputs/outputs
115 * describes the possibilities of how a component is linked into a
118 u32 supported_inputs;
119 u32 supported_outputs;
122 * @funcs: chip functions to access HW
124 struct komeda_component_funcs *funcs;
128 * struct komeda_component_output
130 * a component has multiple outputs, if want to know where the data
131 * comes from, only know the component is not enough, we still need to know
134 struct komeda_component_output {
135 /** @component: indicate which component the data comes from */
136 struct komeda_component *component;
138 * the output port of the &komeda_component_output.component
144 * struct komeda_component_state
146 * component_state is the data flow configuration of the component, and it's
147 * the superclass of all specific component_state like @komeda_layer_state,
148 * @komeda_scaler_state
150 struct komeda_component_state {
151 /** @obj: tracking component_state by drm_atomic_state */
152 struct drm_private_state obj;
153 struct komeda_component *component;
156 * currently bound user, the user can be crtc/plane/wb_conn, which is
157 * valid decided by @component and @inputs
159 * - Layer: its user always is plane.
160 * - compiz/improc/timing_ctrlr: the user is crtc.
161 * - wb_layer: wb_conn;
162 * - scaler: plane when input is layer, wb_conn if input is compiz.
165 struct drm_crtc *crtc;
166 struct drm_plane *plane;
167 struct drm_connector *wb_conn;
173 * active_inputs is bitmask of @inputs index
175 * - active_inputs = changed_active_inputs + unchanged_active_inputs
176 * - affected_inputs = old->active_inputs + new->active_inputs;
177 * - disabling_inputs = affected_inputs ^ active_inputs;
178 * - changed_inputs = disabling_inputs + changed_active_inputs;
181 * changed_inputs doesn't include all active_input but only
182 * @changed_active_inputs, and this bitmask can be used in chip
183 * level for dirty update.
186 u16 changed_active_inputs;
191 * the specific inputs[i] only valid on BIT(i) has been set in
192 * @active_inputs, if not the inputs[i] is undefined.
194 struct komeda_component_output inputs[KOMEDA_COMPONENT_N_INPUTS];
197 static inline u16 component_disabling_inputs(struct komeda_component_state *st)
199 return st->affected_inputs ^ st->active_inputs;
202 static inline u16 component_changed_inputs(struct komeda_component_state *st)
204 return component_disabling_inputs(st) | st->changed_active_inputs;
207 #define to_comp(__c) (((__c) == NULL) ? NULL : &((__c)->base))
208 #define to_cpos(__c) ((struct komeda_component **)&(__c))
210 struct komeda_layer {
211 struct komeda_component base;
212 /* accepted h/v input range before rotation */
213 struct malidp_range hsize_in, vsize_in;
214 u32 layer_type; /* RICH, SIMPLE or WB */
218 struct komeda_layer_state {
219 struct komeda_component_state base;
220 /* layer specific configuration state */
226 struct komeda_compiz {
227 struct komeda_component base;
228 /* compiz specific features and caps */
231 struct komeda_compiz_state {
232 struct komeda_component_state base;
233 /* compiz specific configuration state */
236 struct komeda_scaler {
237 struct komeda_component base;
238 /* scaler features and caps */
241 struct komeda_scaler_state {
242 struct komeda_component_state base;
245 struct komeda_improc {
246 struct komeda_component base;
249 struct komeda_improc_state {
250 struct komeda_component_state base;
253 /* display timing controller */
254 struct komeda_timing_ctrlr {
255 struct komeda_component base;
258 struct komeda_timing_ctrlr_state {
259 struct komeda_component_state base;
262 /** struct komeda_pipeline_funcs */
263 struct komeda_pipeline_funcs {
264 /* dump_register: Optional, dump registers to seq_file */
265 void (*dump_register)(struct komeda_pipeline *pipe,
266 struct seq_file *sf);
270 * struct komeda_pipeline
272 * Represent a complete display pipeline and hold all functional components.
274 struct komeda_pipeline {
275 /** @obj: link pipeline as private obj of drm_atomic_state */
276 struct drm_private_obj obj;
277 /** @mdev: the parent komeda_dev */
278 struct komeda_dev *mdev;
279 /** @pxlclk: pixel clock */
281 /** @aclk: AXI clock */
283 /** @id: pipeline id */
285 /** @avail_comps: available components mask of pipeline */
288 struct komeda_layer *layers[KOMEDA_PIPELINE_MAX_LAYERS];
290 struct komeda_scaler *scalers[KOMEDA_PIPELINE_MAX_SCALERS];
291 struct komeda_compiz *compiz;
292 struct komeda_layer *wb_layer;
293 struct komeda_improc *improc;
294 struct komeda_timing_ctrlr *ctrlr;
295 struct komeda_pipeline_funcs *funcs; /* private pipeline functions */
297 /** @of_node: pipeline dt node */
298 struct device_node *of_node;
299 /** @of_output_port: pipeline output port */
300 struct device_node *of_output_port;
301 /** @of_output_dev: output connector device node */
302 struct device_node *of_output_dev;
306 * struct komeda_pipeline_state
309 * Unlike the pipeline, pipeline_state doesn’t gather any component_state
310 * into it. It because all component will be managed by drm_atomic_state.
312 struct komeda_pipeline_state {
313 /** @obj: tracking pipeline_state by drm_atomic_state */
314 struct drm_private_state obj;
315 struct komeda_pipeline *pipe;
316 /** @crtc: currently bound crtc */
317 struct drm_crtc *crtc;
321 * bitmask - BIT(component->id) of active components
326 #define to_layer(c) container_of(c, struct komeda_layer, base)
327 #define to_compiz(c) container_of(c, struct komeda_compiz, base)
328 #define to_scaler(c) container_of(c, struct komeda_scaler, base)
329 #define to_improc(c) container_of(c, struct komeda_improc, base)
330 #define to_ctrlr(c) container_of(c, struct komeda_timing_ctrlr, base)
332 #define to_layer_st(c) container_of(c, struct komeda_layer_state, base)
333 #define to_compiz_st(c) container_of(c, struct komeda_compiz_state, base)
334 #define to_scaler_st(c) container_of(c, struct komeda_scaler_state, base)
335 #define to_improc_st(c) container_of(c, struct komeda_improc_state, base)
336 #define to_ctrlr_st(c) container_of(c, struct komeda_timing_ctrlr_state, base)
338 #define priv_to_comp_st(o) container_of(o, struct komeda_component_state, obj)
339 #define priv_to_pipe_st(o) container_of(o, struct komeda_pipeline_state, obj)
342 struct komeda_pipeline *
343 komeda_pipeline_add(struct komeda_dev *mdev, size_t size,
344 struct komeda_pipeline_funcs *funcs);
345 void komeda_pipeline_destroy(struct komeda_dev *mdev,
346 struct komeda_pipeline *pipe);
348 struct komeda_component *
349 komeda_pipeline_get_component(struct komeda_pipeline *pipe, int id);
352 struct komeda_component *
353 komeda_component_add(struct komeda_pipeline *pipe,
354 size_t comp_sz, u32 id, u32 hw_id,
355 struct komeda_component_funcs *funcs,
356 u8 max_active_inputs, u32 supported_inputs,
357 u8 max_active_outputs, u32 __iomem *reg,
358 const char *name_fmt, ...);
360 void komeda_component_destroy(struct komeda_dev *mdev,
361 struct komeda_component *c);
363 #endif /* _KOMEDA_PIPELINE_H_*/