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 "mdp_format.h"
15 #include "msm_drv.h"
16 #include "msm_kms.h"
17 #include "mdp_common.xml.h"
18
19 struct mdp_kms;
20
21 struct mdp_kms_funcs {
22 struct msm_kms_funcs base;
23 void (*set_irqmask)(struct mdp_kms *mdp_kms, uint32_t irqmask,
24 uint32_t old_irqmask);
25 };
26
27 struct mdp_kms {
28 struct msm_kms base;
29
30 const struct mdp_kms_funcs *funcs;
31
32 /* irq handling: */
33 bool in_irq;
34 struct list_head irq_list; /* list of mdp4_irq */
35 uint32_t vblank_mask; /* irq bits set for userspace vblank */
36 uint32_t cur_irq_mask; /* current irq mask */
37 };
38 #define to_mdp_kms(x) container_of(x, struct mdp_kms, base)
39
mdp_kms_init(struct mdp_kms * mdp_kms,const struct mdp_kms_funcs * funcs)40 static inline int mdp_kms_init(struct mdp_kms *mdp_kms,
41 const struct mdp_kms_funcs *funcs)
42 {
43 mdp_kms->funcs = funcs;
44 INIT_LIST_HEAD(&mdp_kms->irq_list);
45 return msm_kms_init(&mdp_kms->base, &funcs->base);
46 }
47
mdp_kms_destroy(struct mdp_kms * mdp_kms)48 static inline void mdp_kms_destroy(struct mdp_kms *mdp_kms)
49 {
50 msm_kms_destroy(&mdp_kms->base);
51 }
52
53 /*
54 * irq helpers:
55 */
56
57 /* For transiently registering for different MDP irqs that various parts
58 * of the KMS code need during setup/configuration. These are not
59 * necessarily the same as what drm_vblank_get/put() are requesting, and
60 * the hysteresis in drm_vblank_put() is not necessarily desirable for
61 * internal housekeeping related irq usage.
62 */
63 struct mdp_irq {
64 struct list_head node;
65 uint32_t irqmask;
66 bool registered;
67 void (*irq)(struct mdp_irq *irq, uint32_t irqstatus);
68 };
69
70 void mdp_dispatch_irqs(struct mdp_kms *mdp_kms, uint32_t status);
71 void mdp_update_vblank_mask(struct mdp_kms *mdp_kms, uint32_t mask, bool enable);
72 void mdp_irq_wait(struct mdp_kms *mdp_kms, uint32_t irqmask);
73 void mdp_irq_register(struct mdp_kms *mdp_kms, struct mdp_irq *irq);
74 void mdp_irq_unregister(struct mdp_kms *mdp_kms, struct mdp_irq *irq);
75 void mdp_irq_update(struct mdp_kms *mdp_kms);
76
77 /*
78 * pixel format helpers:
79 */
80
81 /* MDP capabilities */
82 #define MDP_CAP_SMP BIT(0) /* Shared Memory Pool */
83 #define MDP_CAP_DSC BIT(1) /* VESA Display Stream Compression */
84 #define MDP_CAP_CDM BIT(2) /* Chroma Down Module (HDMI 2.0 YUV) */
85 #define MDP_CAP_SRC_SPLIT BIT(3) /* Source Split of SSPPs */
86
87 /* MDP pipe capabilities */
88 #define MDP_PIPE_CAP_HFLIP BIT(0)
89 #define MDP_PIPE_CAP_VFLIP BIT(1)
90 #define MDP_PIPE_CAP_SCALE BIT(2)
91 #define MDP_PIPE_CAP_CSC BIT(3)
92 #define MDP_PIPE_CAP_DECIMATION BIT(4)
93 #define MDP_PIPE_CAP_SW_PIX_EXT BIT(5)
94 #define MDP_PIPE_CAP_CURSOR BIT(6)
95
96 /* MDP layer mixer caps */
97 #define MDP_LM_CAP_DISPLAY BIT(0)
98 #define MDP_LM_CAP_WB BIT(1)
99 #define MDP_LM_CAP_PAIR BIT(2)
100
pipe_supports_yuv(uint32_t pipe_caps)101 static inline bool pipe_supports_yuv(uint32_t pipe_caps)
102 {
103 return (pipe_caps & MDP_PIPE_CAP_SCALE) &&
104 (pipe_caps & MDP_PIPE_CAP_CSC);
105 }
106
107 enum csc_type {
108 CSC_RGB2RGB = 0,
109 CSC_YUV2RGB,
110 CSC_RGB2YUV,
111 CSC_YUV2YUV,
112 CSC_MAX
113 };
114
115 struct csc_cfg {
116 enum csc_type type;
117 uint32_t matrix[9];
118 uint32_t pre_bias[3];
119 uint32_t post_bias[3];
120 uint32_t pre_clamp[6];
121 uint32_t post_clamp[6];
122 };
123
124 struct csc_cfg *mdp_get_default_csc_cfg(enum csc_type);
125
126 #endif /* __MDP_KMS_H__ */
127