mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-10-28 23:24:50 +00:00
9a436ee6c3
They're only used to store const pointers anyway. This helps to keep Ville and the compiler happy. Signed-off-by: Jani Nikula <jani.nikula@intel.com> Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
239 lines
9.1 KiB
C
239 lines
9.1 KiB
C
/*
|
|
* 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>
|
|
|
|
#include <drm/drm_crtc.h>
|
|
|
|
enum mode_set_atomic {
|
|
LEAVE_ATOMIC_MODE_SET,
|
|
ENTER_ATOMIC_MODE_SET,
|
|
};
|
|
|
|
/**
|
|
* struct drm_crtc_helper_funcs - helper operations for CRTCs
|
|
* @dpms: set power state
|
|
* @prepare: prepare the CRTC, called before @mode_set
|
|
* @commit: commit changes to CRTC, called after @mode_set
|
|
* @mode_fixup: try to fixup proposed mode for this CRTC
|
|
* @mode_set: set this mode
|
|
* @mode_set_nofb: set mode only (no scanout buffer attached)
|
|
* @mode_set_base: update the scanout buffer
|
|
* @mode_set_base_atomic: non-blocking mode set (used for kgdb support)
|
|
* @load_lut: load color palette
|
|
* @disable: disable CRTC when no longer in use
|
|
* @enable: enable CRTC
|
|
* @atomic_check: check for validity of an atomic state
|
|
* @atomic_begin: begin atomic update
|
|
* @atomic_flush: flush atomic update
|
|
*
|
|
* The helper operations are called by the mid-layer CRTC helper.
|
|
*
|
|
* Note that with atomic helpers @dpms, @prepare and @commit hooks are
|
|
* deprecated. Used @enable and @disable instead exclusively.
|
|
*
|
|
* With legacy crtc helpers there's a big semantic difference between @disable
|
|
* and the other hooks: @disable also needs to release any resources acquired in
|
|
* @mode_set (like shared PLLs).
|
|
*/
|
|
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);
|
|
/* Actually set the mode for atomic helpers, optional */
|
|
void (*mode_set_nofb)(struct drm_crtc *crtc);
|
|
|
|
/* 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);
|
|
|
|
void (*disable)(struct drm_crtc *crtc);
|
|
void (*enable)(struct drm_crtc *crtc);
|
|
|
|
/* atomic helpers */
|
|
int (*atomic_check)(struct drm_crtc *crtc,
|
|
struct drm_crtc_state *state);
|
|
void (*atomic_begin)(struct drm_crtc *crtc);
|
|
void (*atomic_flush)(struct drm_crtc *crtc);
|
|
};
|
|
|
|
/**
|
|
* struct drm_encoder_helper_funcs - helper operations for encoders
|
|
* @dpms: set power state
|
|
* @save: save connector state
|
|
* @restore: restore connector state
|
|
* @mode_fixup: try to fixup proposed mode for this connector
|
|
* @prepare: part of the disable sequence, called before the CRTC modeset
|
|
* @commit: called after the CRTC modeset
|
|
* @mode_set: set this mode, optional for atomic helpers
|
|
* @get_crtc: return CRTC that the encoder is currently attached to
|
|
* @detect: connection status detection
|
|
* @disable: disable encoder when not in use (overrides DPMS off)
|
|
* @enable: enable encoder
|
|
* @atomic_check: check for validity of an atomic update
|
|
*
|
|
* The helper operations are called by the mid-layer CRTC helper.
|
|
*
|
|
* Note that with atomic helpers @dpms, @prepare and @commit hooks are
|
|
* deprecated. Used @enable and @disable instead exclusively.
|
|
*
|
|
* With legacy crtc helpers there's a big semantic difference between @disable
|
|
* and the other hooks: @disable also needs to release any resources acquired in
|
|
* @mode_set (like shared PLLs).
|
|
*/
|
|
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);
|
|
void (*disable)(struct drm_encoder *encoder);
|
|
|
|
void (*enable)(struct drm_encoder *encoder);
|
|
|
|
/* atomic helpers */
|
|
int (*atomic_check)(struct drm_encoder *encoder,
|
|
struct drm_crtc_state *crtc_state,
|
|
struct drm_connector_state *conn_state);
|
|
};
|
|
|
|
/**
|
|
* struct 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? (optional)
|
|
* @best_encoder: return the preferred encoder for this connector
|
|
*
|
|
* The helper operations are called by the mid-layer CRTC helper.
|
|
*/
|
|
struct drm_connector_helper_funcs {
|
|
int (*get_modes)(struct drm_connector *connector);
|
|
enum drm_mode_status (*mode_valid)(struct drm_connector *connector,
|
|
struct drm_display_mode *mode);
|
|
struct drm_encoder *(*best_encoder)(struct drm_connector *connector);
|
|
};
|
|
|
|
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 void 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 = funcs;
|
|
}
|
|
|
|
static inline void drm_encoder_helper_add(struct drm_encoder *encoder,
|
|
const struct drm_encoder_helper_funcs *funcs)
|
|
{
|
|
encoder->helper_private = funcs;
|
|
}
|
|
|
|
static inline void drm_connector_helper_add(struct drm_connector *connector,
|
|
const struct drm_connector_helper_funcs *funcs)
|
|
{
|
|
connector->helper_private = funcs;
|
|
}
|
|
|
|
extern void drm_helper_resume_force_mode(struct drm_device *dev);
|
|
|
|
int drm_helper_crtc_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);
|
|
int drm_helper_crtc_mode_set_base(struct drm_crtc *crtc, int x, int y,
|
|
struct drm_framebuffer *old_fb);
|
|
|
|
/* drm_probe_helper.c */
|
|
extern int drm_helper_probe_single_connector_modes(struct drm_connector
|
|
*connector, uint32_t maxX,
|
|
uint32_t maxY);
|
|
extern int drm_helper_probe_single_connector_modes_nomerge(struct drm_connector
|
|
*connector,
|
|
uint32_t maxX,
|
|
uint32_t maxY);
|
|
extern void drm_kms_helper_poll_init(struct drm_device *dev);
|
|
extern void drm_kms_helper_poll_fini(struct drm_device *dev);
|
|
extern bool 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
|