/* SPDX-License-Identifier: GPL-2.0 */
/*
* (C) COPYRIGHT 2018 ARM Limited. All rights reserved.
* Author: James.Qian.Wang <james.qian.wang@arm.com>
*
*/
#ifndef _KOMEDA_PIPELINE_H_
#define _KOMEDA_PIPELINE_H_
#include <linux/types.h>
#include <drm/drm_atomic.h>
#include <drm/drm_atomic_helper.h>
#include "malidp_utils.h"
#define KOMEDA_MAX_PIPELINES 2
#define KOMEDA_PIPELINE_MAX_LAYERS 4
#define KOMEDA_PIPELINE_MAX_SCALERS 2
#define KOMEDA_COMPONENT_N_INPUTS 5
/* pipeline component IDs */
enum {
KOMEDA_COMPONENT_LAYER0 = 0,
KOMEDA_COMPONENT_LAYER1 = 1,
KOMEDA_COMPONENT_LAYER2 = 2,
KOMEDA_COMPONENT_LAYER3 = 3,
KOMEDA_COMPONENT_WB_LAYER = 7, /* write back layer */
KOMEDA_COMPONENT_SCALER0 = 8,
KOMEDA_COMPONENT_SCALER1 = 9,
KOMEDA_COMPONENT_SPLITTER = 12,
KOMEDA_COMPONENT_MERGER = 14,
KOMEDA_COMPONENT_COMPIZ0 = 16, /* compositor */
KOMEDA_COMPONENT_COMPIZ1 = 17,
KOMEDA_COMPONENT_IPS0 = 20, /* post image processor */
KOMEDA_COMPONENT_IPS1 = 21,
KOMEDA_COMPONENT_TIMING_CTRLR = 22, /* timing controller */
};
#define KOMEDA_PIPELINE_LAYERS (BIT(KOMEDA_COMPONENT_LAYER0) |\
BIT(KOMEDA_COMPONENT_LAYER1) |\
BIT(KOMEDA_COMPONENT_LAYER2) |\
BIT(KOMEDA_COMPONENT_LAYER3))
#define KOMEDA_PIPELINE_SCALERS (BIT(KOMEDA_COMPONENT_SCALER0) |\
BIT(KOMEDA_COMPONENT_SCALER1))
#define KOMEDA_PIPELINE_COMPIZS (BIT(KOMEDA_COMPONENT_COMPIZ0) |\
BIT(KOMEDA_COMPONENT_COMPIZ1))
#define KOMEDA_PIPELINE_IMPROCS (BIT(KOMEDA_COMPONENT_IPS0) |\
BIT(KOMEDA_COMPONENT_IPS1))
struct komeda_component;
struct komeda_component_state;
/** komeda_component_funcs - component control functions */
struct komeda_component_funcs {
/** @validate: optional,
* component may has special requirements or limitations, this function
* supply HW the ability to do the further HW specific check.
*/
int (*validate)(struct komeda_component *c,
struct komeda_component_state *state);
/** @update: update is a active update */
void (*update)(struct komeda_component *c,
struct komeda_component_state *state);
/** @disable: disable component */
void (*disable)(struct komeda_component *c);
/** @dump_register: Optional, dump registers to seq_file */
void (*dump_register)(struct komeda_component *c, struct seq_file *seq);
};
/**
* struct komeda_component
*
* struct komeda_component describe the data flow capabilities for how to link a
* component into the display pipeline.
* all specified components are subclass of this structure.
*/
struct komeda_component {
/** @obj: treat component as private obj */
struct drm_private_obj obj;
/** @pipeline: the komeda pipeline this component belongs to */
struct komeda_pipeline *pipeline;
/** @name: component name */
char name[32];
/**
* @reg:
* component register base,
* which is initialized by chip and used by chip only
*/
u32 __iomem *reg;
/** @id: component id */
u32 id;
/** @hw_ic: component hw id,
* which is initialized by chip and used by chip only
*/
u32 hw_id;
/**
* @max_active_inputs:
* @max_active_outpus:
*
* maximum number of inputs/outputs that can be active in the same time
* Note:
* the number isn't the bit number of @supported_inputs or
* @supported_outputs, but may be less than it, since component may not
* support enabling all @supported_inputs/outputs at the same time.
*/
u8 max_active_inputs;
u8 max_active_outputs;
/**
* @supported_inputs:
* @supported_outputs:
*
* bitmask of BIT(component->id) for the supported inputs/outputs
* describes the possibilities of how a component is linked into a
* pipeline.
*/
u32 supported_inputs;
u32 supported_outputs;
/**
* @funcs: chip functions to access HW
*/
struct komeda_component_funcs *funcs;
};
/**
* struct komeda_component_output
*
* a component has multiple outputs, if want to know where the data
* comes from, only know the component is not enough, we still need to know
* its output port
*/
struct komeda_component_output {
/** @component: indicate which component the data comes from */
struct komeda_component *component;
/** @output_port:
* the output port of the &komeda_component_output.component
*/
u8 output_port;
};
/**
* struct komeda_component_state
*
* component_state is the data flow configuration of the component, and it's
* the superclass of all specific component_state like @komeda_layer_state,
* @komeda_scaler_state
*/
struct komeda_component_state {
/** @obj: tracking component_state by drm_atomic_state */
struct drm_private_state obj;
struct komeda_component *component;
/**
* @binding_user:
* currently bound user, the user can be crtc/plane/wb_conn, which is
* valid decided by @component and @inputs
*
* - Layer: its user always is plane.
* - compiz/improc/timing_ctrlr: the user is crtc.
* - wb_layer: wb_conn;
* - scaler: plane when input is layer, wb_conn if input is compiz.
*/
union {
struct drm_crtc *crtc;
struct drm_plane *plane;
struct drm_connector *wb_conn;
void *binding_user;
};
/**
* @active_inputs:
*
* active_inputs is bitmask of @inputs index
*
* - active_inputs = changed_active_inputs + unchanged_active_inputs
* - affected_inputs = old->active_inputs + new->active_inputs;
* - disabling_inputs = affected_inputs ^ active_inputs;
* - changed_inputs = disabling_inputs + changed_active_inputs;
*
* NOTE:
* changed_inputs doesn't include all active_input but only
* @changed_active_inputs, and this bitmask can be used in chip
* level for dirty update.
*/
u16 active_inputs;
u16 changed_active_inputs;
u16 affected_inputs;
/**
* @inputs:
*
* the specific inputs[i] only valid on BIT(i) has been set in
* @active_inputs, if not the inputs[i] is undefined.
*/
struct komeda_component_output inputs[KOMEDA_COMPONENT_N_INPUTS];
};
static inline u16 component_disabling_inputs(struct komeda_component_state *st)
{
return st->affected_inputs ^ st->active_inputs;
}
static inline u16 component_changed_inputs(struct komeda_component_state *st)
{
return component_disabling_inputs(st) | st->changed_active_inputs;
}
#define for_each_changed_input(st, i) \
for ((i) = 0; (i) < (st)->component->max_active_inputs; (i)++) \
if (has_bit((i), component_changed_inputs(st)))
#define to_comp(__c) (((__c) == NULL) ? NULL : &((__c)->base))
#define to_cpos(__c) ((struct komeda_component **)&(__c))
struct komeda_layer {
struct komeda_component base;
/* accepted h/v input range before rotation */
struct malidp_range hsize_in, vsize_in;
u32 layer_type; /* RICH, SIMPLE or WB */
u32 supported_rots;
};
struct komeda_layer_state {
struct komeda_component_state base;
/* layer specific configuration state */
u16 hsize, vsize;
u32 rot;
dma_addr_t addr[3];
};
struct komeda_scaler {
struct komeda_component base;
/* scaler features and caps */
};
struct komeda_scaler_state {
struct komeda_component_state base;
};
struct komeda_compiz {
struct komeda_component base;
struct malidp_range hsize, vsize;
};
struct komeda_compiz_input_cfg {
u16 hsize, vsize;
u16 hoffset, voffset;
u8 pixel_blend_mode, layer_alpha;
};
struct komeda_compiz_state {
struct komeda_component_state base;
/* composition size */
u16 hsize, vsize;
struct komeda_compiz_input_cfg cins[KOMEDA_COMPONENT_N_INPUTS];
};
struct komeda_improc {
struct komeda_component base;
u32 supported_color_formats; /* DRM_RGB/YUV444/YUV420*/
u32 supported_color_depths; /* BIT(8) | BIT(10)*/
u8 supports_degamma : 1;
u8 supports_csc : 1;
u8 supports_gamma : 1;
};
struct komeda_improc_state {
struct komeda_component_state base;
u16 hsize, vsize;
};
/* display timing controller */
struct komeda_timing_ctrlr {
struct komeda_component base;
u8 supports_dual_link : 1;
};
struct komeda_timing_ctrlr_state {
struct komeda_component_state base;
};
/** struct komeda_pipeline_funcs */
struct komeda_pipeline_funcs {
/* dump_register: Optional, dump registers to seq_file */
void (*dump_register)(struct komeda_pipeline *pipe,
struct seq_file *sf);
};
/**
* struct komeda_pipeline
*
* Represent a complete display pipeline and hold all functional components.
*/
struct komeda_pipeline {
/** @obj: link pipeline as private obj of drm_atomic_state */
struct drm_private_obj obj;
/** @mdev: the parent komeda_dev */
struct komeda_dev *mdev;
/** @pxlclk: pixel clock */
struct clk *pxlclk;
/** @aclk: AXI clock */
struct clk *aclk;
/** @id: pipeline id */
int id;
/** @avail_comps: available components mask of pipeline */
u32 avail_comps;
int n_layers;
struct komeda_layer *layers[KOMEDA_PIPELINE_MAX_LAYERS];
int n_scalers;
struct komeda_scaler *scalers[KOMEDA_PIPELINE_MAX_SCALERS];
struct komeda_compiz *compiz;
struct komeda_layer *wb_layer;
struct komeda_improc *improc;
struct komeda_timing_ctrlr *ctrlr;
struct komeda_pipeline_funcs *funcs; /* private pipeline functions */
/** @of_node: pipeline dt node */
struct device_node *of_node;
/** @of_output_port: pipeline output port */
struct device_node *of_output_port;
/** @of_output_dev: output connector device node */
struct device_node *of_output_dev;
};
/**
* struct komeda_pipeline_state
*
* NOTE:
* Unlike the pipeline, pipeline_state doesn’t gather any component_state
* into it. It because all component will be managed by drm_atomic_state.
*/
struct komeda_pipeline_state {
/** @obj: tracking pipeline_state by drm_atomic_state */
struct drm_private_state obj;
struct komeda_pipeline *pipe;
/** @crtc: currently bound crtc */
struct drm_crtc *crtc;
/**
* @active_comps:
*
* bitmask - BIT(component->id) of active components
*/
u32 active_comps;
};
#define to_layer(c) container_of(c, struct komeda_layer, base)
#define to_compiz(c) container_of(c, struct komeda_compiz, base)
#define to_scaler(c) container_of(c, struct komeda_scaler, base)
#define to_improc(c) container_of(c, struct komeda_improc, base)
#define to_ctrlr(c) container_of(c, struct komeda_timing_ctrlr, base)
#define to_layer_st(c) container_of(c, struct komeda_layer_state, base)
#define to_compiz_st(c) container_of(c, struct komeda_compiz_state, base)
#define to_scaler_st(c) container_of(c, struct komeda_scaler_state, base)
#define to_improc_st(c) container_of(c, struct komeda_improc_state, base)
#define to_ctrlr_st(c) container_of(c, struct komeda_timing_ctrlr_state, base)
#define priv_to_comp_st(o) container_of(o, struct komeda_component_state, obj)
#define priv_to_pipe_st(o) container_of(o, struct komeda_pipeline_state, obj)
/* pipeline APIs */
struct komeda_pipeline *
komeda_pipeline_add(struct komeda_dev *mdev, size_t size,
struct komeda_pipeline_funcs *funcs);
void komeda_pipeline_destroy(struct komeda_dev *mdev,
struct komeda_pipeline *pipe);
struct komeda_component *
komeda_pipeline_get_component(struct komeda_pipeline *pipe, int id);
/* component APIs */
struct komeda_component *
komeda_component_add(struct komeda_pipeline *pipe,
size_t comp_sz, u32 id, u32 hw_id,
struct komeda_component_funcs *funcs,
u8 max_active_inputs, u32 supported_inputs,
u8 max_active_outputs, u32 __iomem *reg,
const char *name_fmt, ...);
void komeda_component_destroy(struct komeda_dev *mdev,
struct komeda_component *c);
#endif /* _KOMEDA_PIPELINE_H_*/
