2008-11-08 06:05:41 +08:00
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/*
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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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2010-10-14 03:09:44 +08:00
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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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2012-05-17 19:27:20 +08:00
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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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2008-11-08 06:05:41 +08:00
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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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2012-07-17 23:56:50 +08:00
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const struct drm_display_mode *mode,
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2008-11-08 06:05:41 +08:00
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struct drm_display_mode *adjusted_mode);
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/* Actually set the mode */
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2009-02-11 21:25:09 +08:00
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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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2008-11-08 06:05:41 +08:00
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/* Move the crtc on the current fb to the given position *optional* */
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2009-02-11 21:25:09 +08:00
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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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2010-08-05 22:22:31 +08:00
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int (*mode_set_base_atomic)(struct drm_crtc *crtc,
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2010-09-26 19:47:25 +08:00
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struct drm_framebuffer *fb, int x, int y,
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2010-10-14 03:09:44 +08:00
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enum mode_set_atomic);
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2009-10-05 07:58:02 +08:00
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/* reload the current crtc LUT */
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void (*load_lut)(struct drm_crtc *crtc);
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2010-06-12 05:04:35 +08:00
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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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2008-11-08 06:05:41 +08:00
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};
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2012-05-17 19:27:20 +08:00
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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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2008-11-08 06:05:41 +08:00
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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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2012-07-17 23:56:50 +08:00
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const struct drm_display_mode *mode,
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2008-11-08 06:05:41 +08:00
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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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2009-02-24 08:09:34 +08:00
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struct drm_crtc *(*get_crtc)(struct drm_encoder *encoder);
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2008-11-08 06:05:41 +08:00
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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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2009-08-31 13:16:30 +08:00
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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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2008-11-08 06:05:41 +08:00
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};
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2012-05-17 19:27:20 +08:00
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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: 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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2008-11-08 06:05:41 +08:00
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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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drm: initial KMS config fixes
When mode setting is first initialized, the driver will call into
drm_helper_initial_config() to set up an initial output and framebuffer
configuration. This routine is responsible for probing the available
connectors, encoders, and crtcs, looking for modes and putting together
something reasonable (where reasonable is defined as "allows kernel
messages to be visible on as many displays as possible").
However, the code was a bit too aggressive in setting default modes when
none were found on a given connector. Even if some connectors had modes,
any connectors found lacking modes would have the default 800x600 mode added
to their mode list, which in some cases could cause problems later down the
line. In my case, the LVDS was perfectly available, but the initial config
code added 800x600 modes to both of the detected but unavailable HDMI
connectors (which are on my non-existent docking station). This ended up
preventing later code from setting a mode on my LVDS, which is bad.
This patch fixes that behavior by making the initial config code walk
through the connectors first, counting the available modes, before it decides
to add any default modes to a possibly connected output. It also fixes the
logic in drm_target_preferred() that was causing zeroed out modes to be set
as the preferred mode for a given connector, even if no modes were available.
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Dave Airlie <airlied@linux.ie>
2009-01-13 04:05:32 +08:00
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extern int drm_helper_probe_single_connector_modes(struct drm_connector *connector, uint32_t maxX, uint32_t maxY);
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2008-11-08 06:05:41 +08:00
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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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2008-12-18 11:14:46 +08:00
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int x, int y,
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struct drm_framebuffer *old_fb);
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2008-11-08 06:05:41 +08:00
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extern bool drm_helper_crtc_in_use(struct drm_crtc *crtc);
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2009-08-19 06:56:44 +08:00
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extern bool drm_helper_encoder_in_use(struct drm_encoder *encoder);
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2008-11-08 06:05:41 +08:00
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2009-05-31 11:42:28 +08:00
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extern void drm_helper_connector_dpms(struct drm_connector *connector, int mode);
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2012-10-27 21:52:04 +08:00
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extern void drm_helper_move_panel_connectors_to_head(struct drm_device *);
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2008-11-08 06:05:41 +08:00
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extern int drm_helper_mode_fill_fb_struct(struct drm_framebuffer *fb,
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2011-11-15 06:51:28 +08:00
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struct drm_mode_fb_cmd2 *mode_cmd);
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2008-11-08 06:05:41 +08:00
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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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2010-03-30 13:34:15 +08:00
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static inline void drm_connector_helper_add(struct drm_connector *connector,
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2008-11-08 06:05:41 +08:00
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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 int drm_helper_resume_force_mode(struct drm_device *dev);
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2010-05-07 14:42:51 +08:00
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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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2013-10-18 22:11:28 +08:00
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extern bool drm_helper_hpd_irq_event(struct drm_device *dev);
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2012-10-24 02:23:32 +08:00
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extern void drm_kms_helper_hotplug_event(struct drm_device *dev);
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2010-06-01 07:09:06 +08:00
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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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2011-12-20 06:33:24 +08:00
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2008-11-08 06:05:41 +08:00
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#endif
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