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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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38f993b7c5
The API is not suitable for subsystems consisting of multiple devices and requires severe hacks to use it. To mitigate this, this patch implements allocation and address space management locally by using helpers provided by DRM framework, like other DRM drivers do, e.g. Tegra. This patch should not introduce any functional changes until the driver is made to attach subdevices into an IOMMU domain with the generic IOMMU API, which will happen in following patch. Based heavily on GEM implementation of Tegra DRM driver. Signed-off-by: Tomasz Figa <tfiga@chromium.org> Signed-off-by: Shunqian Zheng <zhengsq@rock-chips.com> Signed-off-by: Mark Yao <mark.yao@rock-chips.com> Signed-off-by: rjan Eide <orjan.eide@arm.com>
83 lines
2.4 KiB
C
83 lines
2.4 KiB
C
/*
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* Copyright (C) Fuzhou Rockchip Electronics Co.Ltd
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* Author:Mark Yao <mark.yao@rock-chips.com>
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*
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* based on exynos_drm_drv.h
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*
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* This software is licensed under the terms of the GNU General Public
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* License version 2, as published by the Free Software Foundation, and
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* may be copied, distributed, and modified under those terms.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#ifndef _ROCKCHIP_DRM_DRV_H
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#define _ROCKCHIP_DRM_DRV_H
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#include <drm/drm_fb_helper.h>
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#include <drm/drm_atomic_helper.h>
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#include <drm/drm_gem.h>
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#include <linux/module.h>
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#include <linux/component.h>
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#define ROCKCHIP_MAX_FB_BUFFER 3
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#define ROCKCHIP_MAX_CONNECTOR 2
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#define ROCKCHIP_MAX_CRTC 2
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struct drm_device;
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struct drm_connector;
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struct iommu_domain;
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/*
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* Rockchip drm private crtc funcs.
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* @enable_vblank: enable crtc vblank irq.
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* @disable_vblank: disable crtc vblank irq.
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*/
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struct rockchip_crtc_funcs {
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int (*enable_vblank)(struct drm_crtc *crtc);
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void (*disable_vblank)(struct drm_crtc *crtc);
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};
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struct rockchip_crtc_state {
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struct drm_crtc_state base;
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int output_type;
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int output_mode;
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};
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#define to_rockchip_crtc_state(s) \
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container_of(s, struct rockchip_crtc_state, base)
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/*
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* Rockchip drm private structure.
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*
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* @crtc: array of enabled CRTCs, used to map from "pipe" to drm_crtc.
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* @num_pipe: number of pipes for this device.
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*/
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struct rockchip_drm_private {
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struct drm_fb_helper fbdev_helper;
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struct drm_gem_object *fbdev_bo;
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const struct rockchip_crtc_funcs *crtc_funcs[ROCKCHIP_MAX_CRTC];
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struct drm_atomic_state *state;
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struct iommu_domain *domain;
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/* protect drm_mm on multi-threads */
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struct mutex mm_lock;
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struct drm_mm mm;
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struct list_head psr_list;
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spinlock_t psr_list_lock;
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};
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int rockchip_register_crtc_funcs(struct drm_crtc *crtc,
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const struct rockchip_crtc_funcs *crtc_funcs);
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void rockchip_unregister_crtc_funcs(struct drm_crtc *crtc);
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int rockchip_drm_dma_attach_device(struct drm_device *drm_dev,
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struct device *dev);
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void rockchip_drm_dma_detach_device(struct drm_device *drm_dev,
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struct device *dev);
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int rockchip_drm_wait_line_flag(struct drm_crtc *crtc, unsigned int line_num,
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unsigned int mstimeout);
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#endif /* _ROCKCHIP_DRM_DRV_H_ */
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