99 lines
3.6 KiB
C
99 lines
3.6 KiB
C
/*
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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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/*
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* Control power levels on the CRTC. If the mode passed in is
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* unsupported, the provider must use the next lowest power level.
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*/
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void (*dpms)(struct drm_crtc *crtc, int mode);
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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_encoder_helper_funcs {
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void (*dpms)(struct drm_encoder *encoder, int mode);
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void (*save)(struct drm_encoder *encoder);
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void (*restore)(struct drm_encoder *encoder);
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bool (*mode_fixup)(struct drm_encoder *encoder,
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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_encoder *encoder);
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void (*commit)(struct drm_encoder *encoder);
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void (*mode_set)(struct drm_encoder *encoder,
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struct drm_display_mode *mode,
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struct drm_display_mode *adjusted_mode);
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/* detect for DAC style encoders */
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enum drm_connector_status (*detect)(struct drm_encoder *encoder, struct drm_connector *connector);
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};
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struct drm_connector_helper_funcs {
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int (*get_modes)(struct drm_connector *connector);
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int (*mode_valid)(struct drm_connector *connector,
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struct drm_display_mode *mode);
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struct drm_encoder *(*best_encoder)(struct drm_connector *connector);
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};
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extern void drm_helper_probe_single_connector_modes(struct drm_connector *connector, uint32_t maxX, uint32_t maxY);
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extern void drm_helper_disable_unused_functions(struct drm_device *dev);
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extern int drm_helper_hotplug_stage_two(struct drm_device *dev);
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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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extern bool drm_helper_crtc_in_use(struct drm_crtc *crtc);
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extern int drm_helper_mode_fill_fb_struct(struct drm_framebuffer *fb,
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struct drm_mode_fb_cmd *mode_cmd);
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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_encoder_helper_add(struct drm_encoder *encoder, const struct drm_encoder_helper_funcs *funcs)
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{
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encoder->helper_private = (void *)funcs;
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}
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static inline void drm_connector_helper_add(struct drm_connector *connector, const struct drm_connector_helper_funcs *funcs)
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{
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connector->helper_private = (void *)funcs;
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}
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extern int drm_helper_resume_force_mode(struct drm_device *dev);
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extern void drm_helper_set_connector_dpms(struct drm_connector *connector,
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int dpms_mode);
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#endif
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