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(list: &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__ */
143

source code of linux/drivers/gpu/drm/msm/disp/mdp_kms.h