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1055b39fac
Changelog v2:
move iommu support feature to mixer side.
And below is Prathyush's comment.
According to the new IOMMU framework for exynos sysmmus,
the owner of the sysmmu-tv is mixer (which is the actual
device that does DMA) and not hdmi.
The mmu-master in sysmmu-tv node is set as below in exynos5250.dtsi
sysmmu-tv {
-
mmu-master = <&mixer>;
};
Changelog v1:
The iommu will be enabled when hdmi sub driver is probed and
will be disabled when removed.
Signed-off-by: Inki Dae <inki.dae@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
82 lines
2.8 KiB
C
82 lines
2.8 KiB
C
/* exynos_drm_hdmi.h
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*
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* Copyright (c) 2011 Samsung Electronics Co., Ltd.
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* Authoer: Inki Dae <inki.dae@samsung.com>
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*/
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#ifndef _EXYNOS_DRM_HDMI_H_
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#define _EXYNOS_DRM_HDMI_H_
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#define MIXER_WIN_NR 3
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#define MIXER_DEFAULT_WIN 0
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/*
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* exynos hdmi common context structure.
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*
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* @drm_dev: pointer to drm_device.
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* @ctx: pointer to the context of specific device driver.
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* this context should be hdmi_context or mixer_context.
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*/
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struct exynos_drm_hdmi_context {
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struct drm_device *drm_dev;
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void *ctx;
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};
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struct exynos_hdmi_ops {
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/* display */
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bool (*is_connected)(void *ctx);
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int (*get_edid)(void *ctx, struct drm_connector *connector,
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u8 *edid, int len);
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int (*check_timing)(void *ctx, void *timing);
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int (*power_on)(void *ctx, int mode);
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/* manager */
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void (*mode_fixup)(void *ctx, struct drm_connector *connector,
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const struct drm_display_mode *mode,
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struct drm_display_mode *adjusted_mode);
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void (*mode_set)(void *ctx, void *mode);
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void (*get_max_resol)(void *ctx, unsigned int *width,
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unsigned int *height);
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void (*commit)(void *ctx);
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void (*dpms)(void *ctx, int mode);
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};
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struct exynos_mixer_ops {
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/* manager */
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int (*iommu_on)(void *ctx, bool enable);
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int (*enable_vblank)(void *ctx, int pipe);
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void (*disable_vblank)(void *ctx);
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void (*dpms)(void *ctx, int mode);
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/* overlay */
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void (*wait_for_vblank)(void *ctx);
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void (*win_mode_set)(void *ctx, struct exynos_drm_overlay *overlay);
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void (*win_commit)(void *ctx, int zpos);
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void (*win_disable)(void *ctx, int zpos);
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};
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void exynos_hdmi_drv_attach(struct exynos_drm_hdmi_context *ctx);
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void exynos_mixer_drv_attach(struct exynos_drm_hdmi_context *ctx);
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void exynos_hdmi_ops_register(struct exynos_hdmi_ops *ops);
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void exynos_mixer_ops_register(struct exynos_mixer_ops *ops);
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#endif
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