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 __MSM_KMS_H__
19 #define __MSM_KMS_H__
20
21 #include <linux/clk.h>
22 #include <linux/regulator/consumer.h>
23
24 #include "msm_drv.h"
25
26 #define MAX_PLANE 4
27
28 /* As there are different display controller blocks depending on the
29 * snapdragon version, the kms support is split out and the appropriate
30 * implementation is loaded at runtime. The kms module is responsible
31 * for constructing the appropriate planes/crtcs/encoders/connectors.
32 */
33 struct msm_kms_funcs {
34 /* hw initialization: */
35 int (*hw_init)(struct msm_kms *kms);
36 /* irq handling: */
37 void (*irq_preinstall)(struct msm_kms *kms);
38 int (*irq_postinstall)(struct msm_kms *kms);
39 void (*irq_uninstall)(struct msm_kms *kms);
40 irqreturn_t (*irq)(struct msm_kms *kms);
41 int (*enable_vblank)(struct msm_kms *kms, struct drm_crtc *crtc);
42 void (*disable_vblank)(struct msm_kms *kms, struct drm_crtc *crtc);
43 /* modeset, bracketing atomic_commit(): */
44 void (*prepare_commit)(struct msm_kms *kms, struct drm_atomic_state *state);
45 void (*complete_commit)(struct msm_kms *kms, struct drm_atomic_state *state);
46 /* functions to wait for atomic commit completed on each CRTC */
47 void (*wait_for_crtc_commit_done)(struct msm_kms *kms,
48 struct drm_crtc *crtc);
49 /* misc: */
50 const struct msm_format *(*get_format)(struct msm_kms *kms, uint32_t format);
51 long (*round_pixclk)(struct msm_kms *kms, unsigned long rate,
52 struct drm_encoder *encoder);
53 int (*set_split_display)(struct msm_kms *kms,
54 struct drm_encoder *encoder,
55 struct drm_encoder *slave_encoder,
56 bool is_cmd_mode);
57 /* cleanup: */
58 void (*preclose)(struct msm_kms *kms, struct drm_file *file);
59 void (*destroy)(struct msm_kms *kms);
60 };
61
62 struct msm_kms {
63 const struct msm_kms_funcs *funcs;
64
65 /* irq handling: */
66 bool in_irq;
67 struct list_head irq_list; /* list of mdp4_irq */
68 uint32_t vblank_mask; /* irq bits set for userspace vblank */
69 };
70
msm_kms_init(struct msm_kms * kms,const struct msm_kms_funcs * funcs)71 static inline void msm_kms_init(struct msm_kms *kms,
72 const struct msm_kms_funcs *funcs)
73 {
74 kms->funcs = funcs;
75 }
76
77 struct msm_kms *mdp4_kms_init(struct drm_device *dev);
78 struct msm_kms *mdp5_kms_init(struct drm_device *dev);
79
80 #endif /* __MSM_KMS_H__ */
81