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 
18 struct mdp_kms;
19 
20 struct 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 
26 struct 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 
mdp_kms_init(struct mdp_kms * mdp_kms,const struct mdp_kms_funcs * funcs)39 static 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 
mdp_kms_destroy(struct mdp_kms * mdp_kms)47 static 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  */
62 struct 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 
69 void mdp_dispatch_irqs(struct mdp_kms *mdp_kms, uint32_t status);
70 void mdp_update_vblank_mask(struct mdp_kms *mdp_kms, uint32_t mask, bool enable);
71 void mdp_irq_wait(struct mdp_kms *mdp_kms, uint32_t irqmask);
72 void mdp_irq_register(struct mdp_kms *mdp_kms, struct mdp_irq *irq);
73 void mdp_irq_unregister(struct mdp_kms *mdp_kms, struct mdp_irq *irq);
74 void mdp_irq_update(struct mdp_kms *mdp_kms);
75 
76 /*
77  * pixel format helpers:
78  */
79 
80 struct 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 
94 uint32_t mdp_get_formats(uint32_t *formats, uint32_t max_formats, bool rgb_only);
95 const 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 
pipe_supports_yuv(uint32_t pipe_caps)117 static 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 
123 enum csc_type {
124 	CSC_RGB2RGB = 0,
125 	CSC_YUV2RGB,
126 	CSC_RGB2YUV,
127 	CSC_YUV2YUV,
128 	CSC_MAX
129 };
130 
131 struct 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 
140 struct csc_cfg *mdp_get_default_csc_cfg(enum csc_type);
141 
142 #endif /* __MDP_KMS_H__ */
143