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0a5c9aad11
MDP FLUSH registers could indicate if the previous flush updates has taken effect at vsync boundary. Making use of this H/W feature can catch the vsync that happened between CRTC atomic_flush and *_wait_for_vblanks, to avoid unnecessary wait. This change allows kms CRTCs to use their own *_wait_for_commit_done functions to wait for FLUSH register cleared at vsync, before commit completion. Signed-off-by: Hai Li <hali@codeaurora.org> Signed-off-by: Rob Clark <robdclark@gmail.com>
81 lines
2.7 KiB
C
81 lines
2.7 KiB
C
/*
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* Copyright (C) 2013 Red Hat
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* Author: Rob Clark <robdclark@gmail.com>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 as published by
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* the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along with
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* this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef __MSM_KMS_H__
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#define __MSM_KMS_H__
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#include <linux/clk.h>
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#include <linux/regulator/consumer.h>
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#include "msm_drv.h"
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#define MAX_PLANE 4
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/* As there are different display controller blocks depending on the
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* snapdragon version, the kms support is split out and the appropriate
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* implementation is loaded at runtime. The kms module is responsible
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* for constructing the appropriate planes/crtcs/encoders/connectors.
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*/
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struct msm_kms_funcs {
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/* hw initialization: */
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int (*hw_init)(struct msm_kms *kms);
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/* irq handling: */
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void (*irq_preinstall)(struct msm_kms *kms);
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int (*irq_postinstall)(struct msm_kms *kms);
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void (*irq_uninstall)(struct msm_kms *kms);
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irqreturn_t (*irq)(struct msm_kms *kms);
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int (*enable_vblank)(struct msm_kms *kms, struct drm_crtc *crtc);
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void (*disable_vblank)(struct msm_kms *kms, struct drm_crtc *crtc);
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/* modeset, bracketing atomic_commit(): */
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void (*prepare_commit)(struct msm_kms *kms, struct drm_atomic_state *state);
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void (*complete_commit)(struct msm_kms *kms, struct drm_atomic_state *state);
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/* functions to wait for atomic commit completed on each CRTC */
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void (*wait_for_crtc_commit_done)(struct msm_kms *kms,
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struct drm_crtc *crtc);
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/* misc: */
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const struct msm_format *(*get_format)(struct msm_kms *kms, uint32_t format);
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long (*round_pixclk)(struct msm_kms *kms, unsigned long rate,
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struct drm_encoder *encoder);
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int (*set_split_display)(struct msm_kms *kms,
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struct drm_encoder *encoder,
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struct drm_encoder *slave_encoder,
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bool is_cmd_mode);
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/* cleanup: */
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void (*preclose)(struct msm_kms *kms, struct drm_file *file);
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void (*destroy)(struct msm_kms *kms);
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};
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struct msm_kms {
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const struct msm_kms_funcs *funcs;
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/* irq handling: */
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bool in_irq;
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struct list_head irq_list; /* list of mdp4_irq */
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uint32_t vblank_mask; /* irq bits set for userspace vblank */
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};
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static inline void msm_kms_init(struct msm_kms *kms,
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const struct msm_kms_funcs *funcs)
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{
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kms->funcs = funcs;
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}
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struct msm_kms *mdp4_kms_init(struct drm_device *dev);
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struct msm_kms *mdp5_kms_init(struct drm_device *dev);
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#endif /* __MSM_KMS_H__ */
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