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 void 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 msm_kms_init(&mdp_kms->base, &funcs->base);
45 }
46
47 /*
48 * irq helpers:
49 */
50
51 /* For transiently registering for different MDP irqs that various parts
52 * of the KMS code need during setup/configuration. These are not
53 * necessarily the same as what drm_vblank_get/put() are requesting, and
54 * the hysteresis in drm_vblank_put() is not necessarily desirable for
55 * internal housekeeping related irq usage.
56 */
57 struct mdp_irq {
58 struct list_head node;
59 uint32_t irqmask;
60 bool registered;
61 void (*irq)(struct mdp_irq *irq, uint32_t irqstatus);
62 };
63
64 void mdp_dispatch_irqs(struct mdp_kms *mdp_kms, uint32_t status);
65 void mdp_update_vblank_mask(struct mdp_kms *mdp_kms, uint32_t mask, bool enable);
66 void mdp_irq_wait(struct mdp_kms *mdp_kms, uint32_t irqmask);
67 void mdp_irq_register(struct mdp_kms *mdp_kms, struct mdp_irq *irq);
68 void mdp_irq_unregister(struct mdp_kms *mdp_kms, struct mdp_irq *irq);
69 void mdp_irq_update(struct mdp_kms *mdp_kms);
70
71 /*
72 * pixel format helpers:
73 */
74
75 struct mdp_format {
76 struct msm_format base;
77 enum mdp_bpc bpc_r, bpc_g, bpc_b;
78 enum mdp_bpc_alpha bpc_a;
79 uint8_t unpack[4];
80 bool alpha_enable, unpack_tight;
81 uint8_t cpp, unpack_count;
82 enum mdp_fetch_type fetch_type;
83 enum mdp_chroma_samp_type chroma_sample;
84 bool is_yuv;
85 };
86 #define to_mdp_format(x) container_of(x, struct mdp_format, base)
87 #define MDP_FORMAT_IS_YUV(mdp_format) ((mdp_format)->is_yuv)
88
89 uint32_t mdp_get_formats(uint32_t *formats, uint32_t max_formats, bool rgb_only);
90 const struct msm_format *mdp_get_format(struct msm_kms *kms, uint32_t format, uint64_t modifier);
91
92 /* MDP capabilities */
93 #define MDP_CAP_SMP BIT(0) /* Shared Memory Pool */
94 #define MDP_CAP_DSC BIT(1) /* VESA Display Stream Compression */
95 #define MDP_CAP_CDM BIT(2) /* Chroma Down Module (HDMI 2.0 YUV) */
96 #define MDP_CAP_SRC_SPLIT BIT(3) /* Source Split of SSPPs */
97
98 /* MDP pipe capabilities */
99 #define MDP_PIPE_CAP_HFLIP BIT(0)
100 #define MDP_PIPE_CAP_VFLIP BIT(1)
101 #define MDP_PIPE_CAP_SCALE BIT(2)
102 #define MDP_PIPE_CAP_CSC BIT(3)
103 #define MDP_PIPE_CAP_DECIMATION BIT(4)
104 #define MDP_PIPE_CAP_SW_PIX_EXT BIT(5)
105 #define MDP_PIPE_CAP_CURSOR BIT(6)
106
107 /* MDP layer mixer caps */
108 #define MDP_LM_CAP_DISPLAY BIT(0)
109 #define MDP_LM_CAP_WB BIT(1)
110 #define MDP_LM_CAP_PAIR BIT(2)
111
pipe_supports_yuv(uint32_t pipe_caps)112 static inline bool pipe_supports_yuv(uint32_t pipe_caps)
113 {
114 return (pipe_caps & MDP_PIPE_CAP_SCALE) &&
115 (pipe_caps & MDP_PIPE_CAP_CSC);
116 }
117
118 enum csc_type {
119 CSC_RGB2RGB = 0,
120 CSC_YUV2RGB,
121 CSC_RGB2YUV,
122 CSC_YUV2YUV,
123 CSC_MAX
124 };
125
126 struct csc_cfg {
127 enum csc_type type;
128 uint32_t matrix[9];
129 uint32_t pre_bias[3];
130 uint32_t post_bias[3];
131 uint32_t pre_clamp[6];
132 uint32_t post_clamp[6];
133 };
134
135 struct csc_cfg *mdp_get_default_csc_cfg(enum csc_type);
136
137 #endif /* __MDP_KMS_H__ */
138