1/* SPDX-License-Identifier: GPL-2.0-only */
  2/*
  3 * Copyright (C) 2013 Red Hat
  4 * Author: Rob Clark <robdclark@gmail.com>
  5 */
  6
  7#ifndef __MDP_KMS_H__
  8#define __MDP_KMS_H__
  9
 10#include <linux/clk.h>
 11#include <linux/platform_device.h>
 12#include <linux/regulator/consumer.h>
 13
 14#include "msm_drv.h"
 15#include "msm_kms.h"
 16#include "mdp_common.xml.h"
 17
 18struct mdp_kms;
 19
 20struct mdp_kms_funcs {
 21	struct msm_kms_funcs base;
 22	void (*set_irqmask)(struct mdp_kms *mdp_kms, uint32_t irqmask,
 23		uint32_t old_irqmask);
 24};
 25
 26struct mdp_kms {
 27	struct msm_kms base;
 28
 29	const struct mdp_kms_funcs *funcs;
 30
 31	/* irq handling: */
 32	bool in_irq;
 33	struct list_head irq_list;    /* list of mdp4_irq */
 34	uint32_t vblank_mask;         /* irq bits set for userspace vblank */
 35	uint32_t cur_irq_mask;        /* current irq mask */
 36};
 37#define to_mdp_kms(x) container_of(x, struct mdp_kms, base)
 38
 39static inline int mdp_kms_init(struct mdp_kms *mdp_kms,
 40		const struct mdp_kms_funcs *funcs)
 41{
 42	mdp_kms->funcs = funcs;
 43	INIT_LIST_HEAD(&mdp_kms->irq_list);
 44	return msm_kms_init(&mdp_kms->base, &funcs->base);
 45}
 46
 47static inline void mdp_kms_destroy(struct mdp_kms *mdp_kms)
 48{
 49	msm_kms_destroy(&mdp_kms->base);
 50}
 51
 52/*
 53 * irq helpers:
 54 */
 55
 56/* For transiently registering for different MDP irqs that various parts
 57 * of the KMS code need during setup/configuration.  These are not
 58 * necessarily the same as what drm_vblank_get/put() are requesting, and
 59 * the hysteresis in drm_vblank_put() is not necessarily desirable for
 60 * internal housekeeping related irq usage.
 61 */
 62struct mdp_irq {
 63	struct list_head node;
 64	uint32_t irqmask;
 65	bool registered;
 66	void (*irq)(struct mdp_irq *irq, uint32_t irqstatus);
 67};
 68
 69void mdp_dispatch_irqs(struct mdp_kms *mdp_kms, uint32_t status);
 70void mdp_update_vblank_mask(struct mdp_kms *mdp_kms, uint32_t mask, bool enable);
 71void mdp_irq_wait(struct mdp_kms *mdp_kms, uint32_t irqmask);
 72void mdp_irq_register(struct mdp_kms *mdp_kms, struct mdp_irq *irq);
 73void mdp_irq_unregister(struct mdp_kms *mdp_kms, struct mdp_irq *irq);
 74void mdp_irq_update(struct mdp_kms *mdp_kms);
 75
 76/*
 77 * pixel format helpers:
 78 */
 79
 80struct mdp_format {
 81	struct msm_format base;
 82	enum mdp_bpc bpc_r, bpc_g, bpc_b;
 83	enum mdp_bpc_alpha bpc_a;
 84	uint8_t unpack[4];
 85	bool alpha_enable, unpack_tight;
 86	uint8_t cpp, unpack_count;
 87	enum mdp_fetch_type fetch_type;
 88	enum mdp_chroma_samp_type chroma_sample;
 89	bool is_yuv;
 90};
 91#define to_mdp_format(x) container_of(x, struct mdp_format, base)
 92#define MDP_FORMAT_IS_YUV(mdp_format) ((mdp_format)->is_yuv)
 93
 94uint32_t mdp_get_formats(uint32_t *formats, uint32_t max_formats, bool rgb_only);
 95const struct msm_format *mdp_get_format(struct msm_kms *kms, uint32_t format, uint64_t modifier);
 96
 97/* MDP capabilities */
 98#define MDP_CAP_SMP		BIT(0)	/* Shared Memory Pool                 */
 99#define MDP_CAP_DSC		BIT(1)	/* VESA Display Stream Compression    */
100#define MDP_CAP_CDM		BIT(2)	/* Chroma Down Module (HDMI 2.0 YUV)  */
101#define MDP_CAP_SRC_SPLIT	BIT(3)	/* Source Split of SSPPs */
102
103/* MDP pipe capabilities */
104#define MDP_PIPE_CAP_HFLIP			BIT(0)
105#define MDP_PIPE_CAP_VFLIP			BIT(1)
106#define MDP_PIPE_CAP_SCALE			BIT(2)
107#define MDP_PIPE_CAP_CSC			BIT(3)
108#define MDP_PIPE_CAP_DECIMATION			BIT(4)
109#define MDP_PIPE_CAP_SW_PIX_EXT			BIT(5)
110#define MDP_PIPE_CAP_CURSOR			BIT(6)
111
112/* MDP layer mixer caps */
113#define MDP_LM_CAP_DISPLAY			BIT(0)
114#define MDP_LM_CAP_WB				BIT(1)
115#define MDP_LM_CAP_PAIR				BIT(2)
116
117static inline bool pipe_supports_yuv(uint32_t pipe_caps)
118{
119	return (pipe_caps & MDP_PIPE_CAP_SCALE) &&
120		(pipe_caps & MDP_PIPE_CAP_CSC);
121}
122
123enum csc_type {
124	CSC_RGB2RGB = 0,
125	CSC_YUV2RGB,
126	CSC_RGB2YUV,
127	CSC_YUV2YUV,
128	CSC_MAX
129};
130
131struct csc_cfg {
132	enum csc_type type;
133	uint32_t matrix[9];
134	uint32_t pre_bias[3];
135	uint32_t post_bias[3];
136	uint32_t pre_clamp[6];
137	uint32_t post_clamp[6];
138};
139
140struct csc_cfg *mdp_get_default_csc_cfg(enum csc_type);
141
142#endif /* __MDP_KMS_H__ */