70 lines
2.2 KiB
C
70 lines
2.2 KiB
C
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/*
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* Copyright © 2006 Keith Packard
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* Copyright © 2007 Intel Corporation
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* Jesse Barnes <jesse.barnes@intel.com>
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*/
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/*
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* The DRM mode setting helper functions are common code for drivers to use if they wish.
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* Drivers are not forced to use this code in their implementations but it would be useful
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* if they code they do use at least provides a consistent interface and operation to userspace
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*/
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#ifndef __DRM_CRTC_HELPER_H__
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#define __DRM_CRTC_HELPER_H__
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#include <linux/i2c.h>
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#include <linux/spinlock.h>
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#include <linux/types.h>
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#include <linux/idr.h>
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#include <linux/fb.h>
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struct drm_crtc_helper_funcs {
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void (*prepare)(struct drm_crtc *crtc);
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void (*commit)(struct drm_crtc *crtc);
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/* Provider can fixup or change mode timings before modeset occurs */
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bool (*mode_fixup)(struct drm_crtc *crtc,
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struct drm_display_mode *mode,
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struct drm_display_mode *adjusted_mode);
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/* Actually set the mode */
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void (*mode_set)(struct drm_crtc *crtc, struct drm_display_mode *mode,
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struct drm_display_mode *adjusted_mode, int x, int y);
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/* Move the crtc on the current fb to the given position *optional* */
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void (*mode_set_base)(struct drm_crtc *crtc, int x, int y);
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};
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struct drm_output_helper_funcs {
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bool (*mode_fixup)(struct drm_output *output,
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struct drm_display_mode *mode,
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struct drm_display_mode *adjusted_mode);
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void (*prepare)(struct drm_output *output);
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void (*commit)(struct drm_output *output);
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void (*mode_set)(struct drm_output *output,
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struct drm_display_mode *mode,
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struct drm_display_mode *adjusted_mode);
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};
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extern int drm_helper_hotplug_stage_two(struct drm_device *dev, struct drm_output *output,
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bool connected);
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extern bool drm_helper_initial_config(struct drm_device *dev, bool can_grow);
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extern int drm_crtc_helper_set_config(struct drm_mode_set *set);
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extern bool drm_crtc_helper_set_mode(struct drm_crtc *crtc, struct drm_display_mode *mode,
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int x, int y);
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static inline void drm_crtc_helper_add(struct drm_crtc *crtc, const struct drm_crtc_helper_funcs *funcs)
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{
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crtc->helper_private = (void *)funcs;
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}
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static inline void drm_output_helper_add(struct drm_output *output, const struct drm_output_helper_funcs *funcs)
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{
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output->helper_private = (void *)funcs;
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}
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#endif
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