diff options
Diffstat (limited to 'include/drm/drm_crtc_helper.h')
| -rw-r--r-- | include/drm/drm_crtc_helper.h | 172 |
1 files changed, 172 insertions, 0 deletions
diff --git a/include/drm/drm_crtc_helper.h b/include/drm/drm_crtc_helper.h new file mode 100644 index 0000000..f43d556 --- /dev/null +++ b/include/drm/drm_crtc_helper.h @@ -0,0 +1,172 @@ +/* + * 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> + +enum mode_set_atomic { + LEAVE_ATOMIC_MODE_SET, + ENTER_ATOMIC_MODE_SET, +}; + +/** + * drm_crtc_helper_funcs - helper operations for CRTCs + * @mode_fixup: try to fixup proposed mode for this connector + * @mode_set: set this mode + * + * The helper operations are called by the mid-layer CRTC helper. + */ +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, + const 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); + int (*mode_set_base_atomic)(struct drm_crtc *crtc, + struct drm_framebuffer *fb, int x, int y, + enum mode_set_atomic); + + /* reload the current crtc LUT */ + void (*load_lut)(struct drm_crtc *crtc); + + /* disable crtc when not in use - more explicit than dpms off */ + void (*disable)(struct drm_crtc *crtc); +}; + +/** + * drm_encoder_helper_funcs - helper operations for encoders + * @mode_fixup: try to fixup proposed mode for this connector + * @mode_set: set this mode + * + * The helper operations are called by the mid-layer CRTC helper. + */ +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, + const 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); + /* disable encoder when not in use - more explicit than dpms off */ + void (*disable)(struct drm_encoder *encoder); +}; + +/** + * drm_connector_helper_funcs - helper operations for connectors + * @get_modes: get mode list for this connector + * @mode_valid: is this mode valid on the given connector? + * + * The helper operations are called by the mid-layer CRTC helper. + */ +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_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 bool drm_helper_encoder_in_use(struct drm_encoder *encoder); + +extern void drm_helper_connector_dpms(struct drm_connector *connector, int mode); + +extern void drm_helper_move_panel_connectors_to_head(struct drm_device *); + +extern int drm_helper_mode_fill_fb_struct(struct drm_framebuffer *fb, + struct drm_mode_fb_cmd2 *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); +extern void drm_kms_helper_poll_init(struct drm_device *dev); +extern void drm_kms_helper_poll_fini(struct drm_device *dev); +extern void drm_helper_hpd_irq_event(struct drm_device *dev); +extern void drm_kms_helper_hotplug_event(struct drm_device *dev); + +extern void drm_kms_helper_poll_disable(struct drm_device *dev); +extern void drm_kms_helper_poll_enable(struct drm_device *dev); + +#endif |