1 /*
2 * Copyright (C) 2013 Red Hat
3 * Author: Rob Clark <robdclark@gmail.com>
4 *
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 as published by
7 * the Free Software Foundation.
8 *
9 * This program is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
12 * more details.
13 *
14 * You should have received a copy of the GNU General Public License along with
15 * this program. If not, see <http://www.gnu.org/licenses/>.
16 */
17
18 #ifndef __MDP_KMS_H__
19 #define __MDP_KMS_H__
20
21 #include <linux/clk.h>
22 #include <linux/platform_device.h>
23 #include <linux/regulator/consumer.h>
24
25 #include "msm_drv.h"
26 #include "msm_kms.h"
27 #include "mdp_common.xml.h"
28
29 struct mdp_kms;
30
31 struct mdp_kms_funcs {
32 struct msm_kms_funcs base;
33 void (*set_irqmask)(struct mdp_kms *mdp_kms, uint32_t irqmask,
34 uint32_t old_irqmask);
35 };
36
37 struct mdp_kms {
38 struct msm_kms base;
39
40 const struct mdp_kms_funcs *funcs;
41
42 /* irq handling: */
43 bool in_irq;
44 struct list_head irq_list; /* list of mdp4_irq */
45 uint32_t vblank_mask; /* irq bits set for userspace vblank */
46 uint32_t cur_irq_mask; /* current irq mask */
47 };
48 #define to_mdp_kms(x) container_of(x, struct mdp_kms, base)
49
mdp_kms_init(struct mdp_kms * mdp_kms,const struct mdp_kms_funcs * funcs)50 static inline void mdp_kms_init(struct mdp_kms *mdp_kms,
51 const struct mdp_kms_funcs *funcs)
52 {
53 mdp_kms->funcs = funcs;
54 INIT_LIST_HEAD(&mdp_kms->irq_list);
55 msm_kms_init(&mdp_kms->base, &funcs->base);
56 }
57
58 /*
59 * irq helpers:
60 */
61
62 /* For transiently registering for different MDP irqs that various parts
63 * of the KMS code need during setup/configuration. These are not
64 * necessarily the same as what drm_vblank_get/put() are requesting, and
65 * the hysteresis in drm_vblank_put() is not necessarily desirable for
66 * internal housekeeping related irq usage.
67 */
68 struct mdp_irq {
69 struct list_head node;
70 uint32_t irqmask;
71 bool registered;
72 void (*irq)(struct mdp_irq *irq, uint32_t irqstatus);
73 };
74
75 void mdp_dispatch_irqs(struct mdp_kms *mdp_kms, uint32_t status);
76 void mdp_update_vblank_mask(struct mdp_kms *mdp_kms, uint32_t mask, bool enable);
77 void mdp_irq_wait(struct mdp_kms *mdp_kms, uint32_t irqmask);
78 void mdp_irq_register(struct mdp_kms *mdp_kms, struct mdp_irq *irq);
79 void mdp_irq_unregister(struct mdp_kms *mdp_kms, struct mdp_irq *irq);
80 void mdp_irq_update(struct mdp_kms *mdp_kms);
81
82 /*
83 * pixel format helpers:
84 */
85
86 struct mdp_format {
87 struct msm_format base;
88 enum mdp_bpc bpc_r, bpc_g, bpc_b;
89 enum mdp_bpc_alpha bpc_a;
90 uint8_t unpack[4];
91 bool alpha_enable, unpack_tight;
92 uint8_t cpp, unpack_count;
93 enum mdp_fetch_type fetch_type;
94 enum mdp_chroma_samp_type chroma_sample;
95 bool is_yuv;
96 };
97 #define to_mdp_format(x) container_of(x, struct mdp_format, base)
98 #define MDP_FORMAT_IS_YUV(mdp_format) ((mdp_format)->is_yuv)
99
100 uint32_t mdp_get_formats(uint32_t *formats, uint32_t max_formats, bool rgb_only);
101 const struct msm_format *mdp_get_format(struct msm_kms *kms, uint32_t format);
102
103 /* MDP capabilities */
104 #define MDP_CAP_SMP BIT(0) /* Shared Memory Pool */
105 #define MDP_CAP_DSC BIT(1) /* VESA Display Stream Compression */
106 #define MDP_CAP_CDM BIT(2) /* Chroma Down Module (HDMI 2.0 YUV) */
107
108 /* MDP pipe capabilities */
109 #define MDP_PIPE_CAP_HFLIP BIT(0)
110 #define MDP_PIPE_CAP_VFLIP BIT(1)
111 #define MDP_PIPE_CAP_SCALE BIT(2)
112 #define MDP_PIPE_CAP_CSC BIT(3)
113 #define MDP_PIPE_CAP_DECIMATION BIT(4)
114 #define MDP_PIPE_CAP_SW_PIX_EXT BIT(5)
115
pipe_supports_yuv(uint32_t pipe_caps)116 static inline bool pipe_supports_yuv(uint32_t pipe_caps)
117 {
118 return (pipe_caps & MDP_PIPE_CAP_SCALE) &&
119 (pipe_caps & MDP_PIPE_CAP_CSC);
120 }
121
122 enum csc_type {
123 CSC_RGB2RGB = 0,
124 CSC_YUV2RGB,
125 CSC_RGB2YUV,
126 CSC_YUV2YUV,
127 CSC_MAX
128 };
129
130 struct csc_cfg {
131 enum csc_type type;
132 uint32_t matrix[9];
133 uint32_t pre_bias[3];
134 uint32_t post_bias[3];
135 uint32_t pre_clamp[6];
136 uint32_t post_clamp[6];
137 };
138
139 struct csc_cfg *mdp_get_default_csc_cfg(enum csc_type);
140
141 #endif /* __MDP_KMS_H__ */
142