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linux/drivers/gpu/drm/zte/zx_plane.h

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drm: zte: add initial vou drm driver It adds the initial ZTE VOU display controller DRM driver. There are still some features to be added, like overlay plane, scaling, and more output devices support. But it's already useful with dual CRTCs and HDMI monitor working. Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
2016-09-22 19:52:39 +08:00
/*
* Copyright 2016 Linaro Ltd.
* Copyright 2016 ZTE Corporation.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
*/
#ifndef __ZX_PLANE_H__
#define __ZX_PLANE_H__
drm: zte: make zx_plane accessible from zx_vou driver Move struct zx_plane from zx_plane.c to zx_plane.h, so that it can be accessed from zx_vou driver, and we can save the use of struct zx_layer_data completely. More importantly, those additional data used by VOU controller to enable/disable graphic and video layers can later be added and accessed much more easily from zx_vou driver. While at it, we make two changes to zx_plane_init() interface: - Encode struct device pointer in zx_plane, so that we do not need to pass it as a parameter. - Change return of zx_plane_init() from struct drm_plane pointer to error code, since we can get the pointer from zx_plane in zx_vou driver now. Signed-off-by: Shawn Guo <shawn.guo@linaro.org> Reviewed-by: Sean Paul <seanpaul@chromium.org>
2016-12-28 14:41:37 +08:00
struct zx_plane {
struct drm_plane plane;
struct device *dev;
drm: zte: add initial vou drm driver It adds the initial ZTE VOU display controller DRM driver. There are still some features to be added, like overlay plane, scaling, and more output devices support. But it's already useful with dual CRTCs and HDMI monitor working. Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
2016-09-22 19:52:39 +08:00
void __iomem *layer;
void __iomem *csc;
void __iomem *hbsc;
void __iomem *rsz;
drm: zte: add .atomic_disable hook to disable graphic layer There are a few hardware bits for each graphic layer to control main/aux channel and clock selection, as well as the layer enabling. These bits sit outside the layer block itself, but in VOU control glue block. We currently set these bits up at CRTC initialization for once, and do not support disabling the layer. This patch creates a pair of functions zx_vou_layer_enable[disable] to be invoked from plane hooks .atomic_update and .atomic_disable to set up and tear down the layer. This is generic for both graphic and video layers, so it will make the overlay plane support to be added later much easier. Signed-off-by: Shawn Guo <shawn.guo@linaro.org> Reviewed-by: Sean Paul <seanpaul@chromium.org>
2016-12-29 08:03:03 +08:00
const struct vou_layer_bits *bits;
drm: zte: add initial vou drm driver It adds the initial ZTE VOU display controller DRM driver. There are still some features to be added, like overlay plane, scaling, and more output devices support. But it's already useful with dual CRTCs and HDMI monitor working. Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
2016-09-22 19:52:39 +08:00
};
drm: zte: make zx_plane accessible from zx_vou driver Move struct zx_plane from zx_plane.c to zx_plane.h, so that it can be accessed from zx_vou driver, and we can save the use of struct zx_layer_data completely. More importantly, those additional data used by VOU controller to enable/disable graphic and video layers can later be added and accessed much more easily from zx_vou driver. While at it, we make two changes to zx_plane_init() interface: - Encode struct device pointer in zx_plane, so that we do not need to pass it as a parameter. - Change return of zx_plane_init() from struct drm_plane pointer to error code, since we can get the pointer from zx_plane in zx_vou driver now. Signed-off-by: Shawn Guo <shawn.guo@linaro.org> Reviewed-by: Sean Paul <seanpaul@chromium.org>
2016-12-28 14:41:37 +08:00
#define to_zx_plane(plane) container_of(plane, struct zx_plane, plane)
int zx_plane_init(struct drm_device *drm, struct zx_plane *zplane,
enum drm_plane_type type);
drm: zte: add initial vou drm driver It adds the initial ZTE VOU display controller DRM driver. There are still some features to be added, like overlay plane, scaling, and more output devices support. But it's already useful with dual CRTCs and HDMI monitor working. Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
2016-09-22 19:52:39 +08:00
void zx_plane_set_update(struct drm_plane *plane);
#endif /* __ZX_PLANE_H__ */