| /* |
| * Copyright © 2006 Keith Packard |
| * Copyright © 2007-2008 Dave Airlie |
| * Copyright © 2007-2008 Intel Corporation |
| * Jesse Barnes <jesse.barnes@intel.com> |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining a |
| * copy of this software and associated documentation files (the "Software"), |
| * to deal in the Software without restriction, including without limitation |
| * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
| * and/or sell copies of the Software, and to permit persons to whom the |
| * Software is furnished to do so, subject to the following conditions: |
| * |
| * The above copyright notice and this permission notice shall be included in |
| * all copies or substantial portions of the Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR |
| * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, |
| * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR |
| * OTHER DEALINGS IN THE SOFTWARE. |
| */ |
| |
| /* |
| * The DRM mode setting helper functions are common code for drivers to use if |
| * they wish. Drivers are not forced to use this code in their |
| * implementations but it would be useful if they code they do use at least |
| * provides a consistent interface and operation to userspace |
| */ |
| |
| #ifndef __DRM_CRTC_HELPER_H__ |
| #define __DRM_CRTC_HELPER_H__ |
| |
| #include <linux/spinlock.h> |
| #include <linux/types.h> |
| #include <linux/idr.h> |
| |
| #include <linux/fb.h> |
| |
| struct drm_crtc_helper_funcs { |
| /* |
| * Control power levels on the CRTC. If the mode passed in is |
| * unsupported, the provider must use the next lowest power level. |
| */ |
| void (*dpms)(struct drm_crtc *crtc, int mode); |
| void (*prepare)(struct drm_crtc *crtc); |
| void (*commit)(struct drm_crtc *crtc); |
| |
| /* Provider can fixup or change mode timings before modeset occurs */ |
| bool (*mode_fixup)(struct drm_crtc *crtc, |
| struct drm_display_mode *mode, |
| struct drm_display_mode *adjusted_mode); |
| /* Actually set the mode */ |
| int (*mode_set)(struct drm_crtc *crtc, struct drm_display_mode *mode, |
| struct drm_display_mode *adjusted_mode, int x, int y, |
| struct drm_framebuffer *old_fb); |
| |
| /* Move the crtc on the current fb to the given position *optional* */ |
| int (*mode_set_base)(struct drm_crtc *crtc, int x, int y, |
| struct drm_framebuffer *old_fb); |
| }; |
| |
| struct drm_encoder_helper_funcs { |
| void (*dpms)(struct drm_encoder *encoder, int mode); |
| void (*save)(struct drm_encoder *encoder); |
| void (*restore)(struct drm_encoder *encoder); |
| |
| bool (*mode_fixup)(struct drm_encoder *encoder, |
| struct drm_display_mode *mode, |
| struct drm_display_mode *adjusted_mode); |
| void (*prepare)(struct drm_encoder *encoder); |
| void (*commit)(struct drm_encoder *encoder); |
| void (*mode_set)(struct drm_encoder *encoder, |
| struct drm_display_mode *mode, |
| struct drm_display_mode *adjusted_mode); |
| struct drm_crtc *(*get_crtc)(struct drm_encoder *encoder); |
| /* detect for DAC style encoders */ |
| enum drm_connector_status (*detect)(struct drm_encoder *encoder, |
| struct drm_connector *connector); |
| }; |
| |
| struct drm_connector_helper_funcs { |
| int (*get_modes)(struct drm_connector *connector); |
| int (*mode_valid)(struct drm_connector *connector, |
| struct drm_display_mode *mode); |
| struct drm_encoder *(*best_encoder)(struct drm_connector *connector); |
| }; |
| |
| extern int drm_helper_probe_single_connector_modes(struct drm_connector *connector, uint32_t maxX, uint32_t maxY); |
| extern void drm_helper_disable_unused_functions(struct drm_device *dev); |
| extern int drm_helper_hotplug_stage_two(struct drm_device *dev); |
| extern bool drm_helper_initial_config(struct drm_device *dev, bool can_grow); |
| extern int drm_crtc_helper_set_config(struct drm_mode_set *set); |
| extern bool drm_crtc_helper_set_mode(struct drm_crtc *crtc, |
| struct drm_display_mode *mode, |
| int x, int y, |
| struct drm_framebuffer *old_fb); |
| extern bool drm_helper_crtc_in_use(struct drm_crtc *crtc); |
| |
| extern int drm_helper_mode_fill_fb_struct(struct drm_framebuffer *fb, |
| struct drm_mode_fb_cmd *mode_cmd); |
| |
| static inline void drm_crtc_helper_add(struct drm_crtc *crtc, |
| const struct drm_crtc_helper_funcs *funcs) |
| { |
| crtc->helper_private = (void *)funcs; |
| } |
| |
| static inline void drm_encoder_helper_add(struct drm_encoder *encoder, |
| const struct drm_encoder_helper_funcs *funcs) |
| { |
| encoder->helper_private = (void *)funcs; |
| } |
| |
| static inline void drm_connector_helper_add(struct drm_connector *connector, |
| const struct drm_connector_helper_funcs *funcs) |
| { |
| connector->helper_private = (void *)funcs; |
| } |
| |
| extern int drm_helper_resume_force_mode(struct drm_device *dev); |
| #endif |