cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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mdp_kms.h (3862B)

      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__ */