181 lines
6.6 KiB
C
181 lines
6.6 KiB
C
/*
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* Copyright © 2006 Keith Packard
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* Copyright © 2007-2008 Dave Airlie
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* Copyright © 2007-2008 Intel Corporation
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* Jesse Barnes <jesse.barnes@intel.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 shall be included in
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* all copies or substantial portions of the 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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* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) 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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/*
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* The DRM mode setting helper functions are common code for drivers to use if
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* they wish. Drivers are not forced to use this code in their
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* implementations but it would be useful if they code they do use at least
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* 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/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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enum mode_set_atomic {
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LEAVE_ATOMIC_MODE_SET,
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ENTER_ATOMIC_MODE_SET,
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};
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/**
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* drm_crtc_helper_funcs - helper operations for CRTCs
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* @mode_fixup: try to fixup proposed mode for this connector
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* @mode_set: set this mode
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*
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* The helper operations are called by the mid-layer CRTC helper.
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*/
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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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const 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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int (*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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struct drm_framebuffer *old_fb);
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/* Move the crtc on the current fb to the given position *optional* */
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int (*mode_set_base)(struct drm_crtc *crtc, int x, int y,
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struct drm_framebuffer *old_fb);
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int (*mode_set_base_atomic)(struct drm_crtc *crtc,
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struct drm_framebuffer *fb, int x, int y,
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enum mode_set_atomic);
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/* reload the current crtc LUT */
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void (*load_lut)(struct drm_crtc *crtc);
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/* disable crtc when not in use - more explicit than dpms off */
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void (*disable)(struct drm_crtc *crtc);
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};
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/**
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* drm_encoder_helper_funcs - helper operations for encoders
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* @mode_fixup: try to fixup proposed mode for this connector
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* @mode_set: set this mode
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*
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* The helper operations are called by the mid-layer CRTC helper.
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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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const 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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struct drm_crtc *(*get_crtc)(struct drm_encoder *encoder);
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/* detect for DAC style encoders */
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enum drm_connector_status (*detect)(struct drm_encoder *encoder,
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struct drm_connector *connector);
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/* disable encoder when not in use - more explicit than dpms off */
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void (*disable)(struct drm_encoder *encoder);
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};
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/**
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* drm_connector_helper_funcs - helper operations for connectors
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* @get_modes: get mode list for this connector
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* @mode_valid (optional): is this mode valid on the given connector?
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*
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* The helper operations are called by the mid-layer CRTC helper.
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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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enum drm_mode_status (*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_disable_unused_functions(struct drm_device *dev);
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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,
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struct drm_display_mode *mode,
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int x, int y,
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struct drm_framebuffer *old_fb);
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extern bool drm_helper_crtc_in_use(struct drm_crtc *crtc);
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extern bool drm_helper_encoder_in_use(struct drm_encoder *encoder);
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extern void drm_helper_connector_dpms(struct drm_connector *connector, int mode);
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extern void drm_helper_move_panel_connectors_to_head(struct drm_device *);
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extern void drm_helper_mode_fill_fb_struct(struct drm_framebuffer *fb,
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struct drm_mode_fb_cmd2 *mode_cmd);
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static inline void drm_crtc_helper_add(struct drm_crtc *crtc,
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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,
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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,
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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 void drm_helper_resume_force_mode(struct drm_device *dev);
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/* drm_probe_helper.c */
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extern int drm_helper_probe_single_connector_modes(struct drm_connector
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*connector, uint32_t maxX,
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uint32_t maxY);
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extern int drm_helper_probe_single_connector_modes_nomerge(struct drm_connector
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*connector,
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uint32_t maxX,
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uint32_t maxY);
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extern void drm_kms_helper_poll_init(struct drm_device *dev);
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extern void drm_kms_helper_poll_fini(struct drm_device *dev);
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extern bool drm_helper_hpd_irq_event(struct drm_device *dev);
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extern void drm_kms_helper_hotplug_event(struct drm_device *dev);
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extern void drm_kms_helper_poll_disable(struct drm_device *dev);
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extern void drm_kms_helper_poll_enable(struct drm_device *dev);
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#endif
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