linux/drivers/gpu/drm/sti/sti_mixer.h
Benjamin Gaignard e21e21939c drm: sti: add Mixer
Mixer hardware IP is responsible of mixing the different inputs layers.
Z-order is managed by the mixer.
We could 2 mixers: one for main path and one for auxillary path

Mixers are part of Compositor hardware block

Signed-off-by: Benjamin Gaignard <benjamin.gaignard@linaro.org>
Reviewed-by: Rob Clark <robdclark@gmail.com>
2014-07-30 19:26:59 +02:00

55 lines
1.4 KiB
C

/*
* Copyright (C) STMicroelectronics SA 2014
* Authors: Benjamin Gaignard <benjamin.gaignard@st.com>
* Fabien Dessenne <fabien.dessenne@st.com>
* for STMicroelectronics.
* License terms: GNU General Public License (GPL), version 2
*/
#ifndef _STI_MIXER_H_
#define _STI_MIXER_H_
#include <drm/drmP.h>
#include "sti_layer.h"
#define to_sti_mixer(x) container_of(x, struct sti_mixer, drm_crtc)
/**
* STI Mixer subdevice structure
*
* @dev: driver device
* @regs: mixer registers
* @id: id of the mixer
* @drm_crtc: crtc object link to the mixer
* @pending_event: set if a flip event is pending on crtc
*/
struct sti_mixer {
struct device *dev;
void __iomem *regs;
int id;
struct drm_crtc drm_crtc;
struct drm_pending_vblank_event *pending_event;
};
const char *sti_mixer_to_str(struct sti_mixer *mixer);
struct sti_mixer *sti_mixer_create(struct device *dev, int id,
void __iomem *baseaddr);
int sti_mixer_set_layer_status(struct sti_mixer *mixer,
struct sti_layer *layer, bool status);
int sti_mixer_set_layer_depth(struct sti_mixer *mixer, struct sti_layer *layer);
int sti_mixer_active_video_area(struct sti_mixer *mixer,
struct drm_display_mode *mode);
void sti_mixer_set_background_status(struct sti_mixer *mixer, bool enable);
/* depth in Cross-bar control = z order */
#define GAM_MIXER_NB_DEPTH_LEVEL 7
#define STI_MIXER_MAIN 0
#define STI_MIXER_AUX 1
#endif