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 */
33struct 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	/* misc: */
47	const struct msm_format *(*get_format)(struct msm_kms *kms, uint32_t format);
48	long (*round_pixclk)(struct msm_kms *kms, unsigned long rate,
49			struct drm_encoder *encoder);
50	int (*set_split_display)(struct msm_kms *kms,
51			struct drm_encoder *encoder,
52			struct drm_encoder *slave_encoder,
53			bool is_cmd_mode);
54	/* cleanup: */
55	void (*preclose)(struct msm_kms *kms, struct drm_file *file);
56	void (*destroy)(struct msm_kms *kms);
57};
58
59struct msm_kms {
60	const struct msm_kms_funcs *funcs;
61
62	/* irq handling: */
63	bool in_irq;
64	struct list_head irq_list;    /* list of mdp4_irq */
65	uint32_t vblank_mask;         /* irq bits set for userspace vblank */
66};
67
68static inline void msm_kms_init(struct msm_kms *kms,
69		const struct msm_kms_funcs *funcs)
70{
71	kms->funcs = funcs;
72}
73
74struct msm_kms *mdp4_kms_init(struct drm_device *dev);
75struct msm_kms *mdp5_kms_init(struct drm_device *dev);
76
77#endif /* __MSM_KMS_H__ */
78