2008-11-07 15:05:41 -07:00
|
|
|
/*
|
|
|
|
* Copyright (c) 2006-2008 Intel Corporation
|
|
|
|
* Copyright (c) 2007 Dave Airlie <airlied@linux.ie>
|
|
|
|
*
|
|
|
|
* DRM core CRTC related functions
|
|
|
|
*
|
|
|
|
* Permission to use, copy, modify, distribute, and sell this software and its
|
|
|
|
* documentation for any purpose is hereby granted without fee, provided that
|
|
|
|
* the above copyright notice appear in all copies and that both that copyright
|
|
|
|
* notice and this permission notice appear in supporting documentation, and
|
|
|
|
* that the name of the copyright holders not be used in advertising or
|
|
|
|
* publicity pertaining to distribution of the software without specific,
|
|
|
|
* written prior permission. The copyright holders make no representations
|
|
|
|
* about the suitability of this software for any purpose. It is provided "as
|
|
|
|
* is" without express or implied warranty.
|
|
|
|
*
|
|
|
|
* THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
|
|
|
|
* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
|
|
|
|
* EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
|
|
|
|
* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
|
|
|
|
* DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
|
|
|
|
* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
|
|
|
|
* OF THIS SOFTWARE.
|
|
|
|
*
|
|
|
|
* Authors:
|
|
|
|
* Keith Packard
|
|
|
|
* Eric Anholt <eric@anholt.net>
|
|
|
|
* Dave Airlie <airlied@linux.ie>
|
|
|
|
* Jesse Barnes <jesse.barnes@intel.com>
|
|
|
|
*/
|
|
|
|
|
2011-08-30 16:16:33 -06:00
|
|
|
#include <linux/export.h>
|
2011-08-31 09:29:09 -06:00
|
|
|
#include <linux/moduleparam.h>
|
2011-08-30 16:16:33 -06:00
|
|
|
|
2012-10-02 11:01:07 -06:00
|
|
|
#include <drm/drmP.h>
|
|
|
|
#include <drm/drm_crtc.h>
|
|
|
|
#include <drm/drm_fourcc.h>
|
|
|
|
#include <drm/drm_crtc_helper.h>
|
|
|
|
#include <drm/drm_fb_helper.h>
|
|
|
|
#include <drm/drm_edid.h>
|
2008-11-07 15:05:41 -07:00
|
|
|
|
2012-10-27 07:52:04 -06:00
|
|
|
void drm_helper_move_panel_connectors_to_head(struct drm_device *dev)
|
|
|
|
{
|
|
|
|
struct drm_connector *connector, *tmp;
|
|
|
|
struct list_head panel_list;
|
|
|
|
|
|
|
|
INIT_LIST_HEAD(&panel_list);
|
|
|
|
|
|
|
|
list_for_each_entry_safe(connector, tmp,
|
|
|
|
&dev->mode_config.connector_list, head) {
|
|
|
|
if (connector->connector_type == DRM_MODE_CONNECTOR_LVDS ||
|
|
|
|
connector->connector_type == DRM_MODE_CONNECTOR_eDP)
|
|
|
|
list_move_tail(&connector->head, &panel_list);
|
|
|
|
}
|
|
|
|
|
|
|
|
list_splice(&panel_list, &dev->mode_config.connector_list);
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(drm_helper_move_panel_connectors_to_head);
|
|
|
|
|
2010-08-20 02:13:36 -06:00
|
|
|
static bool drm_kms_helper_poll = true;
|
|
|
|
module_param_named(poll, drm_kms_helper_poll, bool, 0600);
|
|
|
|
|
2009-04-01 21:52:12 -06:00
|
|
|
static void drm_mode_validate_flag(struct drm_connector *connector,
|
|
|
|
int flags)
|
|
|
|
{
|
2012-02-01 03:38:30 -07:00
|
|
|
struct drm_display_mode *mode;
|
2009-04-01 21:52:12 -06:00
|
|
|
|
|
|
|
if (flags == (DRM_MODE_FLAG_DBLSCAN | DRM_MODE_FLAG_INTERLACE))
|
|
|
|
return;
|
|
|
|
|
2012-02-01 03:38:30 -07:00
|
|
|
list_for_each_entry(mode, &connector->modes, head) {
|
2009-04-01 21:52:12 -06:00
|
|
|
if ((mode->flags & DRM_MODE_FLAG_INTERLACE) &&
|
|
|
|
!(flags & DRM_MODE_FLAG_INTERLACE))
|
|
|
|
mode->status = MODE_NO_INTERLACE;
|
|
|
|
if ((mode->flags & DRM_MODE_FLAG_DBLSCAN) &&
|
|
|
|
!(flags & DRM_MODE_FLAG_DBLSCAN))
|
|
|
|
mode->status = MODE_NO_DBLESCAN;
|
|
|
|
}
|
|
|
|
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
2008-11-07 15:05:41 -07:00
|
|
|
/**
|
2010-03-29 23:34:13 -06:00
|
|
|
* drm_helper_probe_single_connector_modes - get complete set of display modes
|
2008-11-07 15:05:41 -07:00
|
|
|
* @dev: DRM device
|
|
|
|
* @maxX: max width for modes
|
|
|
|
* @maxY: max height for modes
|
|
|
|
*
|
|
|
|
* LOCKING:
|
|
|
|
* Caller must hold mode config lock.
|
|
|
|
*
|
|
|
|
* Based on @dev's mode_config layout, scan all the connectors and try to detect
|
|
|
|
* modes on them. Modes will first be added to the connector's probed_modes
|
|
|
|
* list, then culled (based on validity and the @maxX, @maxY parameters) and
|
|
|
|
* put into the normal modes list.
|
|
|
|
*
|
|
|
|
* Intended to be used either at bootup time or when major configuration
|
|
|
|
* changes have occurred.
|
|
|
|
*
|
|
|
|
* FIXME: take into account monitor limits
|
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>
2009-01-12 13:05:32 -07:00
|
|
|
*
|
|
|
|
* RETURNS:
|
|
|
|
* Number of modes found on @connector.
|
2008-11-07 15:05:41 -07:00
|
|
|
*/
|
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>
2009-01-12 13:05:32 -07:00
|
|
|
int drm_helper_probe_single_connector_modes(struct drm_connector *connector,
|
|
|
|
uint32_t maxX, uint32_t maxY)
|
2008-11-07 15:05:41 -07:00
|
|
|
{
|
|
|
|
struct drm_device *dev = connector->dev;
|
2012-02-01 03:38:30 -07:00
|
|
|
struct drm_display_mode *mode;
|
2008-11-07 15:05:41 -07:00
|
|
|
struct drm_connector_helper_funcs *connector_funcs =
|
|
|
|
connector->helper_private;
|
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>
2009-01-12 13:05:32 -07:00
|
|
|
int count = 0;
|
2009-04-01 21:52:12 -06:00
|
|
|
int mode_flags = 0;
|
2008-11-07 15:05:41 -07:00
|
|
|
|
2010-07-15 13:43:25 -06:00
|
|
|
DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n", connector->base.id,
|
|
|
|
drm_get_connector_name(connector));
|
2008-11-07 15:05:41 -07:00
|
|
|
/* set all modes to the unverified state */
|
2012-02-01 03:38:30 -07:00
|
|
|
list_for_each_entry(mode, &connector->modes, head)
|
2008-11-07 15:05:41 -07:00
|
|
|
mode->status = MODE_UNVERIFIED;
|
|
|
|
|
drm/kms: start adding command line interface using fb.
[note this requires an fb patch posted to linux-fbdev-devel already]
This uses the normal video= command line option to control the kms
output setup at boot time. It is used to override the autodetection
done by kms.
video= normally takes a framebuffer as the first parameter, in kms
it will take a connector name, DVI-I-1, or LVDS-1 etc. If no output
connector is specified the mode string will apply to all connectors.
The mode specification used will match down the probed modes, and if
no mode is found it will add a CVT mode that matches.
video=1024x768 - all connectors match a 1024x768 mode or add a CVT on
video=VGA-1:1024x768, VGA-1 connector gets mode only.
The same strings as used in current fb modedb.c are used, except I've
added three more letters, e, D, d, e = enable, D = enable Digital,
d = disable, which allow a connector to be forced into a certain state.
Signed-off-by: Dave Airlie <airlied@redhat.com>
2009-09-22 22:44:08 -06:00
|
|
|
if (connector->force) {
|
|
|
|
if (connector->force == DRM_FORCE_ON)
|
|
|
|
connector->status = connector_status_connected;
|
|
|
|
else
|
|
|
|
connector->status = connector_status_disconnected;
|
|
|
|
if (connector->funcs->force)
|
|
|
|
connector->funcs->force(connector);
|
2010-08-20 02:13:36 -06:00
|
|
|
} else {
|
2010-09-14 04:07:23 -06:00
|
|
|
connector->status = connector->funcs->detect(connector, true);
|
2010-09-06 16:53:47 -06:00
|
|
|
drm_kms_helper_poll_enable(dev);
|
2010-08-20 02:13:36 -06:00
|
|
|
}
|
2008-11-07 15:05:41 -07:00
|
|
|
|
|
|
|
if (connector->status == connector_status_disconnected) {
|
2010-07-15 13:43:25 -06:00
|
|
|
DRM_DEBUG_KMS("[CONNECTOR:%d:%s] disconnected\n",
|
|
|
|
connector->base.id, drm_get_connector_name(connector));
|
2010-03-04 01:25:55 -07:00
|
|
|
drm_mode_connector_update_edid_property(connector, NULL);
|
2009-09-07 19:51:46 -06:00
|
|
|
goto prune;
|
2008-11-07 15:05:41 -07:00
|
|
|
}
|
|
|
|
|
2012-03-18 15:37:33 -06:00
|
|
|
#ifdef CONFIG_DRM_LOAD_EDID_FIRMWARE
|
|
|
|
count = drm_load_edid_firmware(connector);
|
|
|
|
if (count == 0)
|
|
|
|
#endif
|
|
|
|
count = (*connector_funcs->get_modes)(connector);
|
|
|
|
|
2010-09-05 09:55:25 -06:00
|
|
|
if (count == 0 && connector->status == connector_status_connected)
|
2009-11-23 12:23:07 -07:00
|
|
|
count = drm_add_modes_noedid(connector, 1024, 768);
|
2010-09-05 09:55:25 -06:00
|
|
|
if (count == 0)
|
|
|
|
goto prune;
|
2008-11-07 15:05:41 -07:00
|
|
|
|
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>
2009-01-12 13:05:32 -07:00
|
|
|
drm_mode_connector_list_update(connector);
|
2008-11-07 15:05:41 -07:00
|
|
|
|
|
|
|
if (maxX && maxY)
|
|
|
|
drm_mode_validate_size(dev, &connector->modes, maxX,
|
|
|
|
maxY, 0);
|
2009-04-01 21:52:12 -06:00
|
|
|
|
|
|
|
if (connector->interlace_allowed)
|
|
|
|
mode_flags |= DRM_MODE_FLAG_INTERLACE;
|
|
|
|
if (connector->doublescan_allowed)
|
|
|
|
mode_flags |= DRM_MODE_FLAG_DBLSCAN;
|
|
|
|
drm_mode_validate_flag(connector, mode_flags);
|
|
|
|
|
2012-02-01 03:38:30 -07:00
|
|
|
list_for_each_entry(mode, &connector->modes, head) {
|
2008-11-07 15:05:41 -07:00
|
|
|
if (mode->status == MODE_OK)
|
|
|
|
mode->status = connector_funcs->mode_valid(connector,
|
|
|
|
mode);
|
|
|
|
}
|
|
|
|
|
2009-09-07 19:51:46 -06:00
|
|
|
prune:
|
2008-11-07 15:05:41 -07:00
|
|
|
drm_mode_prune_invalid(dev, &connector->modes, true);
|
|
|
|
|
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>
2009-01-12 13:05:32 -07:00
|
|
|
if (list_empty(&connector->modes))
|
|
|
|
return 0;
|
2008-11-07 15:05:41 -07:00
|
|
|
|
|
|
|
drm_mode_sort(&connector->modes);
|
|
|
|
|
2010-07-15 13:43:25 -06:00
|
|
|
DRM_DEBUG_KMS("[CONNECTOR:%d:%s] probed modes :\n", connector->base.id,
|
|
|
|
drm_get_connector_name(connector));
|
2012-02-01 03:38:30 -07:00
|
|
|
list_for_each_entry(mode, &connector->modes, head) {
|
2008-11-07 15:05:41 -07:00
|
|
|
mode->vrefresh = drm_mode_vrefresh(mode);
|
|
|
|
|
|
|
|
drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V);
|
|
|
|
drm_mode_debug_printmodeline(mode);
|
|
|
|
}
|
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>
2009-01-12 13:05:32 -07:00
|
|
|
|
|
|
|
return count;
|
2008-11-07 15:05:41 -07:00
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(drm_helper_probe_single_connector_modes);
|
|
|
|
|
2009-05-30 21:42:28 -06:00
|
|
|
/**
|
|
|
|
* drm_helper_encoder_in_use - check if a given encoder is in use
|
|
|
|
* @encoder: encoder to check
|
|
|
|
*
|
|
|
|
* LOCKING:
|
|
|
|
* Caller must hold mode config lock.
|
|
|
|
*
|
|
|
|
* Walk @encoders's DRM device's mode_config and see if it's in use.
|
|
|
|
*
|
|
|
|
* RETURNS:
|
|
|
|
* True if @encoder is part of the mode_config, false otherwise.
|
|
|
|
*/
|
|
|
|
bool drm_helper_encoder_in_use(struct drm_encoder *encoder)
|
|
|
|
{
|
|
|
|
struct drm_connector *connector;
|
|
|
|
struct drm_device *dev = encoder->dev;
|
|
|
|
list_for_each_entry(connector, &dev->mode_config.connector_list, head)
|
|
|
|
if (connector->encoder == encoder)
|
|
|
|
return true;
|
|
|
|
return false;
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(drm_helper_encoder_in_use);
|
|
|
|
|
2008-11-07 15:05:41 -07:00
|
|
|
/**
|
|
|
|
* drm_helper_crtc_in_use - check if a given CRTC is in a mode_config
|
|
|
|
* @crtc: CRTC to check
|
|
|
|
*
|
|
|
|
* LOCKING:
|
|
|
|
* Caller must hold mode config lock.
|
|
|
|
*
|
|
|
|
* Walk @crtc's DRM device's mode_config and see if it's in use.
|
|
|
|
*
|
|
|
|
* RETURNS:
|
|
|
|
* True if @crtc is part of the mode_config, false otherwise.
|
|
|
|
*/
|
|
|
|
bool drm_helper_crtc_in_use(struct drm_crtc *crtc)
|
|
|
|
{
|
|
|
|
struct drm_encoder *encoder;
|
|
|
|
struct drm_device *dev = crtc->dev;
|
|
|
|
/* FIXME: Locking around list access? */
|
|
|
|
list_for_each_entry(encoder, &dev->mode_config.encoder_list, head)
|
2009-05-30 21:42:28 -06:00
|
|
|
if (encoder->crtc == crtc && drm_helper_encoder_in_use(encoder))
|
2008-11-07 15:05:41 -07:00
|
|
|
return true;
|
|
|
|
return false;
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(drm_helper_crtc_in_use);
|
|
|
|
|
2010-07-01 00:49:57 -06:00
|
|
|
static void
|
|
|
|
drm_encoder_disable(struct drm_encoder *encoder)
|
|
|
|
{
|
|
|
|
struct drm_encoder_helper_funcs *encoder_funcs = encoder->helper_private;
|
|
|
|
|
|
|
|
if (encoder_funcs->disable)
|
|
|
|
(*encoder_funcs->disable)(encoder);
|
|
|
|
else
|
|
|
|
(*encoder_funcs->dpms)(encoder, DRM_MODE_DPMS_OFF);
|
|
|
|
}
|
|
|
|
|
2008-11-07 15:05:41 -07:00
|
|
|
/**
|
2009-12-30 23:30:46 -07:00
|
|
|
* drm_helper_disable_unused_functions - disable unused objects
|
2008-11-07 15:05:41 -07:00
|
|
|
* @dev: DRM device
|
|
|
|
*
|
|
|
|
* LOCKING:
|
|
|
|
* Caller must hold mode config lock.
|
|
|
|
*
|
|
|
|
* If an connector or CRTC isn't part of @dev's mode_config, it can be disabled
|
|
|
|
* by calling its dpms function, which should power it off.
|
|
|
|
*/
|
|
|
|
void drm_helper_disable_unused_functions(struct drm_device *dev)
|
|
|
|
{
|
|
|
|
struct drm_encoder *encoder;
|
2009-08-30 23:16:30 -06:00
|
|
|
struct drm_connector *connector;
|
2008-11-07 15:05:41 -07:00
|
|
|
struct drm_crtc *crtc;
|
|
|
|
|
2009-08-30 23:16:30 -06:00
|
|
|
list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
|
|
|
|
if (!connector->encoder)
|
|
|
|
continue;
|
|
|
|
if (connector->status == connector_status_disconnected)
|
|
|
|
connector->encoder = NULL;
|
|
|
|
}
|
|
|
|
|
2008-11-07 15:05:41 -07:00
|
|
|
list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
|
2010-12-20 19:47:56 -07:00
|
|
|
if (!drm_helper_encoder_in_use(encoder)) {
|
2010-07-01 00:49:57 -06:00
|
|
|
drm_encoder_disable(encoder);
|
2009-09-01 22:00:11 -06:00
|
|
|
/* disconnector encoder from any connector */
|
|
|
|
encoder->crtc = NULL;
|
2009-08-30 23:16:30 -06:00
|
|
|
}
|
2008-11-07 15:05:41 -07:00
|
|
|
}
|
|
|
|
|
|
|
|
list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
|
|
|
|
struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private;
|
|
|
|
crtc->enabled = drm_helper_crtc_in_use(crtc);
|
|
|
|
if (!crtc->enabled) {
|
2010-06-11 15:04:35 -06:00
|
|
|
if (crtc_funcs->disable)
|
|
|
|
(*crtc_funcs->disable)(crtc);
|
|
|
|
else
|
|
|
|
(*crtc_funcs->dpms)(crtc, DRM_MODE_DPMS_OFF);
|
2008-11-07 15:05:41 -07:00
|
|
|
crtc->fb = NULL;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(drm_helper_disable_unused_functions);
|
|
|
|
|
2009-02-23 17:09:34 -07:00
|
|
|
/**
|
|
|
|
* drm_encoder_crtc_ok - can a given crtc drive a given encoder?
|
|
|
|
* @encoder: encoder to test
|
|
|
|
* @crtc: crtc to test
|
|
|
|
*
|
|
|
|
* Return false if @encoder can't be driven by @crtc, true otherwise.
|
|
|
|
*/
|
|
|
|
static bool drm_encoder_crtc_ok(struct drm_encoder *encoder,
|
|
|
|
struct drm_crtc *crtc)
|
|
|
|
{
|
|
|
|
struct drm_device *dev;
|
|
|
|
struct drm_crtc *tmp;
|
|
|
|
int crtc_mask = 1;
|
|
|
|
|
2010-10-30 15:08:30 -06:00
|
|
|
WARN(!crtc, "checking null crtc?\n");
|
2009-02-23 17:09:34 -07:00
|
|
|
|
|
|
|
dev = crtc->dev;
|
|
|
|
|
|
|
|
list_for_each_entry(tmp, &dev->mode_config.crtc_list, head) {
|
|
|
|
if (tmp == crtc)
|
|
|
|
break;
|
|
|
|
crtc_mask <<= 1;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (encoder->possible_crtcs & crtc_mask)
|
|
|
|
return true;
|
|
|
|
return false;
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Check the CRTC we're going to map each output to vs. its current
|
|
|
|
* CRTC. If they don't match, we have to disable the output and the CRTC
|
|
|
|
* since the driver will have to re-route things.
|
|
|
|
*/
|
|
|
|
static void
|
|
|
|
drm_crtc_prepare_encoders(struct drm_device *dev)
|
|
|
|
{
|
|
|
|
struct drm_encoder_helper_funcs *encoder_funcs;
|
|
|
|
struct drm_encoder *encoder;
|
|
|
|
|
|
|
|
list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
|
|
|
|
encoder_funcs = encoder->helper_private;
|
|
|
|
/* Disable unused encoders */
|
|
|
|
if (encoder->crtc == NULL)
|
2010-07-01 00:49:57 -06:00
|
|
|
drm_encoder_disable(encoder);
|
2009-02-23 17:09:34 -07:00
|
|
|
/* Disable encoders whose CRTC is about to change */
|
|
|
|
if (encoder_funcs->get_crtc &&
|
|
|
|
encoder->crtc != (*encoder_funcs->get_crtc)(encoder))
|
2010-07-01 00:49:57 -06:00
|
|
|
drm_encoder_disable(encoder);
|
2009-02-23 17:09:34 -07:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2008-11-07 15:05:41 -07:00
|
|
|
/**
|
|
|
|
* drm_crtc_set_mode - set a mode
|
|
|
|
* @crtc: CRTC to program
|
|
|
|
* @mode: mode to use
|
2012-11-09 10:26:32 -07:00
|
|
|
* @x: horizontal offset into the surface
|
|
|
|
* @y: vertical offset into the surface
|
2008-11-07 15:05:41 -07:00
|
|
|
*
|
|
|
|
* LOCKING:
|
|
|
|
* Caller must hold mode config lock.
|
|
|
|
*
|
|
|
|
* Try to set @mode on @crtc. Give @crtc and its associated connectors a chance
|
|
|
|
* to fixup or reject the mode prior to trying to set it.
|
|
|
|
*
|
|
|
|
* RETURNS:
|
|
|
|
* True if the mode was set successfully, or false otherwise.
|
|
|
|
*/
|
|
|
|
bool drm_crtc_helper_set_mode(struct drm_crtc *crtc,
|
|
|
|
struct drm_display_mode *mode,
|
2008-12-17 20:14:46 -07:00
|
|
|
int x, int y,
|
|
|
|
struct drm_framebuffer *old_fb)
|
2008-11-07 15:05:41 -07:00
|
|
|
{
|
|
|
|
struct drm_device *dev = crtc->dev;
|
drm/vblank: Add support for precise vblank timestamping.
The DRI2 swap & sync implementation needs precise
vblank counts and precise timestamps corresponding
to those vblank counts. For conformance to the OpenML
OML_sync_control extension specification the DRM
timestamp associated with a vblank count should
correspond to the start of video scanout of the first
scanline of the video frame following the vblank
interval for that vblank count.
Therefore we need to carry around precise timestamps
for vblanks. Currently the DRM and KMS drivers generate
timestamps ad-hoc via do_gettimeofday() in some
places. The resulting timestamps are sometimes not
very precise due to interrupt handling delays, they
don't conform to OML_sync_control and some are wrong,
as they aren't taken synchronized to the vblank.
This patch implements support inside the drm core
for precise and robust timestamping. It consists
of the following interrelated pieces.
1. Vblank timestamp caching:
A per-crtc ringbuffer stores the most recent vblank
timestamps corresponding to vblank counts.
The ringbuffer can be read out lock-free via the
accessor function:
struct timeval timestamp;
vblankcount = drm_vblank_count_and_time(dev, crtcid, ×tamp).
The function returns the current vblank count and
the corresponding timestamp for start of video
scanout following the vblank interval. It can be
used anywhere between enclosing drm_vblank_get(dev, crtcid)
and drm_vblank_put(dev,crtcid) statements. It is used
inside the drmWaitVblank ioctl and in the vblank event
queueing and handling. It should be used by kms drivers for
timestamping of bufferswap completion.
The timestamp ringbuffer is reinitialized each time
vblank irq's get reenabled in drm_vblank_get()/
drm_update_vblank_count(). It is invalidated when
vblank irq's get disabled.
The ringbuffer is updated inside drm_handle_vblank()
at each vblank irq.
2. Calculation of precise vblank timestamps:
drm_get_last_vbltimestamp() is used to compute the
timestamp for the end of the most recent vblank (if
inside active scanout), or the expected end of the
current vblank interval (if called inside a vblank
interval). The function calls into a new optional kms
driver entry point dev->driver->get_vblank_timestamp()
which is supposed to provide the precise timestamp.
If a kms driver doesn't implement the entry point or
if the call fails, a simple do_gettimeofday() timestamp
is returned as crude approximation of the true vblank time.
A new drm module parameter drm.timestamp_precision_usec
allows to disable high precision timestamps (if set to
zero) or to specify the maximum acceptable error in
the timestamps in microseconds.
Kms drivers could implement their get_vblank_timestamp()
function in a gpu specific way, as long as returned
timestamps conform to OML_sync_control, e.g., by use
of gpu specific hardware timestamps.
Optionally, kms drivers can simply wrap and use the new
utility function drm_calc_vbltimestamp_from_scanoutpos().
This function calls a new optional kms driver function
dev->driver->get_scanout_position() which returns the
current horizontal and vertical video scanout position
of the crtc. The scanout position together with the
drm_display_timing of the current video mode is used
to calculate elapsed time relative to start of active scanout
for the current video frame. This elapsed time is subtracted
from the current do_gettimeofday() time to get the timestamp
corresponding to start of video scanout. Currently
non-interlaced, non-doublescan video modes, with or
without panel scaling are handled correctly. Interlaced/
doublescan modes are tbd in a future patch.
3. Filtering of redundant vblank irq's and removal of
some race-conditions in the vblank irq enable/disable path:
Some gpu's (e.g., Radeon R500/R600) send spurious vblank
irq's outside the vblank if vblank irq's get reenabled.
These get detected by use of the vblank timestamps and
filtered out to avoid miscounting of vblanks.
Some race-conditions between the vblank irq enable/disable
functions, the vblank irq handler and the gpu itself (updating
its hardware vblank counter in the "wrong" moment) are
fixed inside vblank_disable_and_save() and
drm_update_vblank_count() by use of the vblank timestamps and
a new spinlock dev->vblank_time_lock.
The time until vblank irq disable is now configurable via
a new drm module parameter drm.vblankoffdelay to allow
experimentation with timeouts that are much shorter than
the current 5 seconds and should allow longer vblank off
periods for better power savings.
Followup patches will use these new functions to
implement precise timestamping for the intel and radeon
kms drivers.
Signed-off-by: Mario Kleiner <mario.kleiner@tuebingen.mpg.de>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2010-10-22 20:20:23 -06:00
|
|
|
struct drm_display_mode *adjusted_mode, saved_mode, saved_hwmode;
|
2008-11-07 15:05:41 -07:00
|
|
|
struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private;
|
|
|
|
struct drm_encoder_helper_funcs *encoder_funcs;
|
|
|
|
int saved_x, saved_y;
|
|
|
|
struct drm_encoder *encoder;
|
|
|
|
bool ret = true;
|
|
|
|
|
|
|
|
crtc->enabled = drm_helper_crtc_in_use(crtc);
|
|
|
|
if (!crtc->enabled)
|
|
|
|
return true;
|
|
|
|
|
2011-01-28 04:31:56 -07:00
|
|
|
adjusted_mode = drm_mode_duplicate(dev, mode);
|
2012-03-13 04:35:48 -06:00
|
|
|
if (!adjusted_mode)
|
|
|
|
return false;
|
2011-01-28 04:31:56 -07:00
|
|
|
|
drm/vblank: Add support for precise vblank timestamping.
The DRI2 swap & sync implementation needs precise
vblank counts and precise timestamps corresponding
to those vblank counts. For conformance to the OpenML
OML_sync_control extension specification the DRM
timestamp associated with a vblank count should
correspond to the start of video scanout of the first
scanline of the video frame following the vblank
interval for that vblank count.
Therefore we need to carry around precise timestamps
for vblanks. Currently the DRM and KMS drivers generate
timestamps ad-hoc via do_gettimeofday() in some
places. The resulting timestamps are sometimes not
very precise due to interrupt handling delays, they
don't conform to OML_sync_control and some are wrong,
as they aren't taken synchronized to the vblank.
This patch implements support inside the drm core
for precise and robust timestamping. It consists
of the following interrelated pieces.
1. Vblank timestamp caching:
A per-crtc ringbuffer stores the most recent vblank
timestamps corresponding to vblank counts.
The ringbuffer can be read out lock-free via the
accessor function:
struct timeval timestamp;
vblankcount = drm_vblank_count_and_time(dev, crtcid, ×tamp).
The function returns the current vblank count and
the corresponding timestamp for start of video
scanout following the vblank interval. It can be
used anywhere between enclosing drm_vblank_get(dev, crtcid)
and drm_vblank_put(dev,crtcid) statements. It is used
inside the drmWaitVblank ioctl and in the vblank event
queueing and handling. It should be used by kms drivers for
timestamping of bufferswap completion.
The timestamp ringbuffer is reinitialized each time
vblank irq's get reenabled in drm_vblank_get()/
drm_update_vblank_count(). It is invalidated when
vblank irq's get disabled.
The ringbuffer is updated inside drm_handle_vblank()
at each vblank irq.
2. Calculation of precise vblank timestamps:
drm_get_last_vbltimestamp() is used to compute the
timestamp for the end of the most recent vblank (if
inside active scanout), or the expected end of the
current vblank interval (if called inside a vblank
interval). The function calls into a new optional kms
driver entry point dev->driver->get_vblank_timestamp()
which is supposed to provide the precise timestamp.
If a kms driver doesn't implement the entry point or
if the call fails, a simple do_gettimeofday() timestamp
is returned as crude approximation of the true vblank time.
A new drm module parameter drm.timestamp_precision_usec
allows to disable high precision timestamps (if set to
zero) or to specify the maximum acceptable error in
the timestamps in microseconds.
Kms drivers could implement their get_vblank_timestamp()
function in a gpu specific way, as long as returned
timestamps conform to OML_sync_control, e.g., by use
of gpu specific hardware timestamps.
Optionally, kms drivers can simply wrap and use the new
utility function drm_calc_vbltimestamp_from_scanoutpos().
This function calls a new optional kms driver function
dev->driver->get_scanout_position() which returns the
current horizontal and vertical video scanout position
of the crtc. The scanout position together with the
drm_display_timing of the current video mode is used
to calculate elapsed time relative to start of active scanout
for the current video frame. This elapsed time is subtracted
from the current do_gettimeofday() time to get the timestamp
corresponding to start of video scanout. Currently
non-interlaced, non-doublescan video modes, with or
without panel scaling are handled correctly. Interlaced/
doublescan modes are tbd in a future patch.
3. Filtering of redundant vblank irq's and removal of
some race-conditions in the vblank irq enable/disable path:
Some gpu's (e.g., Radeon R500/R600) send spurious vblank
irq's outside the vblank if vblank irq's get reenabled.
These get detected by use of the vblank timestamps and
filtered out to avoid miscounting of vblanks.
Some race-conditions between the vblank irq enable/disable
functions, the vblank irq handler and the gpu itself (updating
its hardware vblank counter in the "wrong" moment) are
fixed inside vblank_disable_and_save() and
drm_update_vblank_count() by use of the vblank timestamps and
a new spinlock dev->vblank_time_lock.
The time until vblank irq disable is now configurable via
a new drm module parameter drm.vblankoffdelay to allow
experimentation with timeouts that are much shorter than
the current 5 seconds and should allow longer vblank off
periods for better power savings.
Followup patches will use these new functions to
implement precise timestamping for the intel and radeon
kms drivers.
Signed-off-by: Mario Kleiner <mario.kleiner@tuebingen.mpg.de>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2010-10-22 20:20:23 -06:00
|
|
|
saved_hwmode = crtc->hwmode;
|
2008-11-07 15:05:41 -07:00
|
|
|
saved_mode = crtc->mode;
|
|
|
|
saved_x = crtc->x;
|
|
|
|
saved_y = crtc->y;
|
|
|
|
|
|
|
|
/* Update crtc values up front so the driver can rely on them for mode
|
|
|
|
* setting.
|
|
|
|
*/
|
|
|
|
crtc->mode = *mode;
|
|
|
|
crtc->x = x;
|
|
|
|
crtc->y = y;
|
|
|
|
|
|
|
|
/* Pass our mode to the connectors and the CRTC to give them a chance to
|
|
|
|
* adjust it according to limitations or connector properties, and also
|
|
|
|
* a chance to reject the mode entirely.
|
|
|
|
*/
|
|
|
|
list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
|
|
|
|
|
|
|
|
if (encoder->crtc != crtc)
|
|
|
|
continue;
|
|
|
|
encoder_funcs = encoder->helper_private;
|
|
|
|
if (!(ret = encoder_funcs->mode_fixup(encoder, mode,
|
|
|
|
adjusted_mode))) {
|
2011-10-10 14:21:27 -06:00
|
|
|
DRM_DEBUG_KMS("Encoder fixup failed\n");
|
2008-11-07 15:05:41 -07:00
|
|
|
goto done;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
if (!(ret = crtc_funcs->mode_fixup(crtc, mode, adjusted_mode))) {
|
2011-10-10 14:21:27 -06:00
|
|
|
DRM_DEBUG_KMS("CRTC fixup failed\n");
|
2008-11-07 15:05:41 -07:00
|
|
|
goto done;
|
|
|
|
}
|
2010-07-15 13:43:25 -06:00
|
|
|
DRM_DEBUG_KMS("[CRTC:%d]\n", crtc->base.id);
|
2008-11-07 15:05:41 -07:00
|
|
|
|
|
|
|
/* Prepare the encoders and CRTCs before setting the mode. */
|
|
|
|
list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
|
|
|
|
|
|
|
|
if (encoder->crtc != crtc)
|
|
|
|
continue;
|
|
|
|
encoder_funcs = encoder->helper_private;
|
|
|
|
/* Disable the encoders as the first thing we do. */
|
|
|
|
encoder_funcs->prepare(encoder);
|
|
|
|
}
|
|
|
|
|
2009-02-23 17:09:34 -07:00
|
|
|
drm_crtc_prepare_encoders(dev);
|
|
|
|
|
2008-11-07 15:05:41 -07:00
|
|
|
crtc_funcs->prepare(crtc);
|
|
|
|
|
|
|
|
/* Set up the DPLL and any encoders state that needs to adjust or depend
|
|
|
|
* on the DPLL.
|
|
|
|
*/
|
2009-02-11 06:25:09 -07:00
|
|
|
ret = !crtc_funcs->mode_set(crtc, mode, adjusted_mode, x, y, old_fb);
|
|
|
|
if (!ret)
|
|
|
|
goto done;
|
2008-11-07 15:05:41 -07:00
|
|
|
|
|
|
|
list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
|
|
|
|
|
|
|
|
if (encoder->crtc != crtc)
|
|
|
|
continue;
|
|
|
|
|
2010-07-15 13:43:25 -06:00
|
|
|
DRM_DEBUG_KMS("[ENCODER:%d:%s] set [MODE:%d:%s]\n",
|
|
|
|
encoder->base.id, drm_get_encoder_name(encoder),
|
|
|
|
mode->base.id, mode->name);
|
2008-11-07 15:05:41 -07:00
|
|
|
encoder_funcs = encoder->helper_private;
|
|
|
|
encoder_funcs->mode_set(encoder, mode, adjusted_mode);
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Now enable the clocks, plane, pipe, and connectors that we set up. */
|
|
|
|
crtc_funcs->commit(crtc);
|
|
|
|
|
|
|
|
list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
|
|
|
|
|
|
|
|
if (encoder->crtc != crtc)
|
|
|
|
continue;
|
|
|
|
|
|
|
|
encoder_funcs = encoder->helper_private;
|
|
|
|
encoder_funcs->commit(encoder);
|
|
|
|
|
|
|
|
}
|
|
|
|
|
drm/vblank: Add support for precise vblank timestamping.
The DRI2 swap & sync implementation needs precise
vblank counts and precise timestamps corresponding
to those vblank counts. For conformance to the OpenML
OML_sync_control extension specification the DRM
timestamp associated with a vblank count should
correspond to the start of video scanout of the first
scanline of the video frame following the vblank
interval for that vblank count.
Therefore we need to carry around precise timestamps
for vblanks. Currently the DRM and KMS drivers generate
timestamps ad-hoc via do_gettimeofday() in some
places. The resulting timestamps are sometimes not
very precise due to interrupt handling delays, they
don't conform to OML_sync_control and some are wrong,
as they aren't taken synchronized to the vblank.
This patch implements support inside the drm core
for precise and robust timestamping. It consists
of the following interrelated pieces.
1. Vblank timestamp caching:
A per-crtc ringbuffer stores the most recent vblank
timestamps corresponding to vblank counts.
The ringbuffer can be read out lock-free via the
accessor function:
struct timeval timestamp;
vblankcount = drm_vblank_count_and_time(dev, crtcid, ×tamp).
The function returns the current vblank count and
the corresponding timestamp for start of video
scanout following the vblank interval. It can be
used anywhere between enclosing drm_vblank_get(dev, crtcid)
and drm_vblank_put(dev,crtcid) statements. It is used
inside the drmWaitVblank ioctl and in the vblank event
queueing and handling. It should be used by kms drivers for
timestamping of bufferswap completion.
The timestamp ringbuffer is reinitialized each time
vblank irq's get reenabled in drm_vblank_get()/
drm_update_vblank_count(). It is invalidated when
vblank irq's get disabled.
The ringbuffer is updated inside drm_handle_vblank()
at each vblank irq.
2. Calculation of precise vblank timestamps:
drm_get_last_vbltimestamp() is used to compute the
timestamp for the end of the most recent vblank (if
inside active scanout), or the expected end of the
current vblank interval (if called inside a vblank
interval). The function calls into a new optional kms
driver entry point dev->driver->get_vblank_timestamp()
which is supposed to provide the precise timestamp.
If a kms driver doesn't implement the entry point or
if the call fails, a simple do_gettimeofday() timestamp
is returned as crude approximation of the true vblank time.
A new drm module parameter drm.timestamp_precision_usec
allows to disable high precision timestamps (if set to
zero) or to specify the maximum acceptable error in
the timestamps in microseconds.
Kms drivers could implement their get_vblank_timestamp()
function in a gpu specific way, as long as returned
timestamps conform to OML_sync_control, e.g., by use
of gpu specific hardware timestamps.
Optionally, kms drivers can simply wrap and use the new
utility function drm_calc_vbltimestamp_from_scanoutpos().
This function calls a new optional kms driver function
dev->driver->get_scanout_position() which returns the
current horizontal and vertical video scanout position
of the crtc. The scanout position together with the
drm_display_timing of the current video mode is used
to calculate elapsed time relative to start of active scanout
for the current video frame. This elapsed time is subtracted
from the current do_gettimeofday() time to get the timestamp
corresponding to start of video scanout. Currently
non-interlaced, non-doublescan video modes, with or
without panel scaling are handled correctly. Interlaced/
doublescan modes are tbd in a future patch.
3. Filtering of redundant vblank irq's and removal of
some race-conditions in the vblank irq enable/disable path:
Some gpu's (e.g., Radeon R500/R600) send spurious vblank
irq's outside the vblank if vblank irq's get reenabled.
These get detected by use of the vblank timestamps and
filtered out to avoid miscounting of vblanks.
Some race-conditions between the vblank irq enable/disable
functions, the vblank irq handler and the gpu itself (updating
its hardware vblank counter in the "wrong" moment) are
fixed inside vblank_disable_and_save() and
drm_update_vblank_count() by use of the vblank timestamps and
a new spinlock dev->vblank_time_lock.
The time until vblank irq disable is now configurable via
a new drm module parameter drm.vblankoffdelay to allow
experimentation with timeouts that are much shorter than
the current 5 seconds and should allow longer vblank off
periods for better power savings.
Followup patches will use these new functions to
implement precise timestamping for the intel and radeon
kms drivers.
Signed-off-by: Mario Kleiner <mario.kleiner@tuebingen.mpg.de>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2010-10-22 20:20:23 -06:00
|
|
|
/* Store real post-adjustment hardware mode. */
|
|
|
|
crtc->hwmode = *adjusted_mode;
|
|
|
|
|
|
|
|
/* Calculate and store various constants which
|
|
|
|
* are later needed by vblank and swap-completion
|
|
|
|
* timestamping. They are derived from true hwmode.
|
|
|
|
*/
|
|
|
|
drm_calc_timestamping_constants(crtc);
|
|
|
|
|
2008-11-07 15:05:41 -07:00
|
|
|
/* FIXME: add subpixel order */
|
|
|
|
done:
|
2011-01-28 04:31:56 -07:00
|
|
|
drm_mode_destroy(dev, adjusted_mode);
|
2008-11-07 15:05:41 -07:00
|
|
|
if (!ret) {
|
drm/vblank: Add support for precise vblank timestamping.
The DRI2 swap & sync implementation needs precise
vblank counts and precise timestamps corresponding
to those vblank counts. For conformance to the OpenML
OML_sync_control extension specification the DRM
timestamp associated with a vblank count should
correspond to the start of video scanout of the first
scanline of the video frame following the vblank
interval for that vblank count.
Therefore we need to carry around precise timestamps
for vblanks. Currently the DRM and KMS drivers generate
timestamps ad-hoc via do_gettimeofday() in some
places. The resulting timestamps are sometimes not
very precise due to interrupt handling delays, they
don't conform to OML_sync_control and some are wrong,
as they aren't taken synchronized to the vblank.
This patch implements support inside the drm core
for precise and robust timestamping. It consists
of the following interrelated pieces.
1. Vblank timestamp caching:
A per-crtc ringbuffer stores the most recent vblank
timestamps corresponding to vblank counts.
The ringbuffer can be read out lock-free via the
accessor function:
struct timeval timestamp;
vblankcount = drm_vblank_count_and_time(dev, crtcid, ×tamp).
The function returns the current vblank count and
the corresponding timestamp for start of video
scanout following the vblank interval. It can be
used anywhere between enclosing drm_vblank_get(dev, crtcid)
and drm_vblank_put(dev,crtcid) statements. It is used
inside the drmWaitVblank ioctl and in the vblank event
queueing and handling. It should be used by kms drivers for
timestamping of bufferswap completion.
The timestamp ringbuffer is reinitialized each time
vblank irq's get reenabled in drm_vblank_get()/
drm_update_vblank_count(). It is invalidated when
vblank irq's get disabled.
The ringbuffer is updated inside drm_handle_vblank()
at each vblank irq.
2. Calculation of precise vblank timestamps:
drm_get_last_vbltimestamp() is used to compute the
timestamp for the end of the most recent vblank (if
inside active scanout), or the expected end of the
current vblank interval (if called inside a vblank
interval). The function calls into a new optional kms
driver entry point dev->driver->get_vblank_timestamp()
which is supposed to provide the precise timestamp.
If a kms driver doesn't implement the entry point or
if the call fails, a simple do_gettimeofday() timestamp
is returned as crude approximation of the true vblank time.
A new drm module parameter drm.timestamp_precision_usec
allows to disable high precision timestamps (if set to
zero) or to specify the maximum acceptable error in
the timestamps in microseconds.
Kms drivers could implement their get_vblank_timestamp()
function in a gpu specific way, as long as returned
timestamps conform to OML_sync_control, e.g., by use
of gpu specific hardware timestamps.
Optionally, kms drivers can simply wrap and use the new
utility function drm_calc_vbltimestamp_from_scanoutpos().
This function calls a new optional kms driver function
dev->driver->get_scanout_position() which returns the
current horizontal and vertical video scanout position
of the crtc. The scanout position together with the
drm_display_timing of the current video mode is used
to calculate elapsed time relative to start of active scanout
for the current video frame. This elapsed time is subtracted
from the current do_gettimeofday() time to get the timestamp
corresponding to start of video scanout. Currently
non-interlaced, non-doublescan video modes, with or
without panel scaling are handled correctly. Interlaced/
doublescan modes are tbd in a future patch.
3. Filtering of redundant vblank irq's and removal of
some race-conditions in the vblank irq enable/disable path:
Some gpu's (e.g., Radeon R500/R600) send spurious vblank
irq's outside the vblank if vblank irq's get reenabled.
These get detected by use of the vblank timestamps and
filtered out to avoid miscounting of vblanks.
Some race-conditions between the vblank irq enable/disable
functions, the vblank irq handler and the gpu itself (updating
its hardware vblank counter in the "wrong" moment) are
fixed inside vblank_disable_and_save() and
drm_update_vblank_count() by use of the vblank timestamps and
a new spinlock dev->vblank_time_lock.
The time until vblank irq disable is now configurable via
a new drm module parameter drm.vblankoffdelay to allow
experimentation with timeouts that are much shorter than
the current 5 seconds and should allow longer vblank off
periods for better power savings.
Followup patches will use these new functions to
implement precise timestamping for the intel and radeon
kms drivers.
Signed-off-by: Mario Kleiner <mario.kleiner@tuebingen.mpg.de>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2010-10-22 20:20:23 -06:00
|
|
|
crtc->hwmode = saved_hwmode;
|
2008-11-07 15:05:41 -07:00
|
|
|
crtc->mode = saved_mode;
|
|
|
|
crtc->x = saved_x;
|
|
|
|
crtc->y = saved_y;
|
|
|
|
}
|
|
|
|
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(drm_crtc_helper_set_mode);
|
|
|
|
|
|
|
|
|
2011-11-28 14:10:05 -07:00
|
|
|
static int
|
|
|
|
drm_crtc_helper_disable(struct drm_crtc *crtc)
|
|
|
|
{
|
|
|
|
struct drm_device *dev = crtc->dev;
|
|
|
|
struct drm_connector *connector;
|
|
|
|
struct drm_encoder *encoder;
|
|
|
|
|
|
|
|
/* Decouple all encoders and their attached connectors from this crtc */
|
|
|
|
list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
|
|
|
|
if (encoder->crtc != crtc)
|
|
|
|
continue;
|
|
|
|
|
|
|
|
list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
|
|
|
|
if (connector->encoder != encoder)
|
|
|
|
continue;
|
|
|
|
|
|
|
|
connector->encoder = NULL;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
drm_helper_disable_unused_functions(dev);
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2008-11-07 15:05:41 -07:00
|
|
|
/**
|
|
|
|
* drm_crtc_helper_set_config - set a new config from userspace
|
|
|
|
* @crtc: CRTC to setup
|
|
|
|
* @crtc_info: user provided configuration
|
|
|
|
* @new_mode: new mode to set
|
|
|
|
* @connector_set: set of connectors for the new config
|
|
|
|
* @fb: new framebuffer
|
|
|
|
*
|
|
|
|
* LOCKING:
|
|
|
|
* Caller must hold mode config lock.
|
|
|
|
*
|
|
|
|
* Setup a new configuration, provided by the user in @crtc_info, and enable
|
|
|
|
* it.
|
|
|
|
*
|
|
|
|
* RETURNS:
|
|
|
|
* Zero. (FIXME)
|
|
|
|
*/
|
|
|
|
int drm_crtc_helper_set_config(struct drm_mode_set *set)
|
|
|
|
{
|
|
|
|
struct drm_device *dev;
|
2009-08-27 02:18:29 -06:00
|
|
|
struct drm_crtc *save_crtcs, *new_crtc, *crtc;
|
|
|
|
struct drm_encoder *save_encoders, *new_encoder, *encoder;
|
2009-02-23 17:09:34 -07:00
|
|
|
struct drm_framebuffer *old_fb = NULL;
|
2009-08-03 06:43:59 -06:00
|
|
|
bool mode_changed = false; /* if true do a full mode set */
|
|
|
|
bool fb_changed = false; /* if true and !mode_changed just do a flip */
|
2009-08-27 02:18:29 -06:00
|
|
|
struct drm_connector *save_connectors, *connector;
|
2008-11-07 15:05:41 -07:00
|
|
|
int count = 0, ro, fail = 0;
|
|
|
|
struct drm_crtc_helper_funcs *crtc_funcs;
|
2011-11-07 11:39:57 -07:00
|
|
|
struct drm_mode_set save_set;
|
2012-05-17 05:27:21 -06:00
|
|
|
int ret;
|
2010-11-26 11:45:58 -07:00
|
|
|
int i;
|
2008-11-07 15:05:41 -07:00
|
|
|
|
2009-07-19 23:48:07 -06:00
|
|
|
DRM_DEBUG_KMS("\n");
|
2008-11-07 15:05:41 -07:00
|
|
|
|
|
|
|
if (!set)
|
|
|
|
return -EINVAL;
|
|
|
|
|
|
|
|
if (!set->crtc)
|
|
|
|
return -EINVAL;
|
|
|
|
|
|
|
|
if (!set->crtc->helper_private)
|
|
|
|
return -EINVAL;
|
|
|
|
|
|
|
|
crtc_funcs = set->crtc->helper_private;
|
|
|
|
|
2011-01-31 04:16:33 -07:00
|
|
|
if (!set->mode)
|
|
|
|
set->fb = NULL;
|
|
|
|
|
2010-07-15 13:43:25 -06:00
|
|
|
if (set->fb) {
|
|
|
|
DRM_DEBUG_KMS("[CRTC:%d] [FB:%d] #connectors=%d (x y) (%i %i)\n",
|
|
|
|
set->crtc->base.id, set->fb->base.id,
|
|
|
|
(int)set->num_connectors, set->x, set->y);
|
|
|
|
} else {
|
2011-01-31 04:16:33 -07:00
|
|
|
DRM_DEBUG_KMS("[CRTC:%d] [NOFB]\n", set->crtc->base.id);
|
2011-11-28 14:10:05 -07:00
|
|
|
return drm_crtc_helper_disable(set->crtc);
|
2010-07-15 13:43:25 -06:00
|
|
|
}
|
2008-11-07 15:05:41 -07:00
|
|
|
|
|
|
|
dev = set->crtc->dev;
|
|
|
|
|
2009-08-27 02:18:29 -06:00
|
|
|
/* Allocate space for the backup of all (non-pointer) crtc, encoder and
|
|
|
|
* connector data. */
|
|
|
|
save_crtcs = kzalloc(dev->mode_config.num_crtc *
|
|
|
|
sizeof(struct drm_crtc), GFP_KERNEL);
|
2008-11-07 15:05:41 -07:00
|
|
|
if (!save_crtcs)
|
|
|
|
return -ENOMEM;
|
|
|
|
|
2009-08-27 02:18:29 -06:00
|
|
|
save_encoders = kzalloc(dev->mode_config.num_encoder *
|
|
|
|
sizeof(struct drm_encoder), GFP_KERNEL);
|
2008-11-07 15:05:41 -07:00
|
|
|
if (!save_encoders) {
|
|
|
|
kfree(save_crtcs);
|
|
|
|
return -ENOMEM;
|
|
|
|
}
|
|
|
|
|
2009-08-27 02:18:29 -06:00
|
|
|
save_connectors = kzalloc(dev->mode_config.num_connector *
|
|
|
|
sizeof(struct drm_connector), GFP_KERNEL);
|
|
|
|
if (!save_connectors) {
|
|
|
|
kfree(save_crtcs);
|
|
|
|
kfree(save_encoders);
|
|
|
|
return -ENOMEM;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Copy data. Note that driver private data is not affected.
|
|
|
|
* Should anything bad happen only the expected state is
|
|
|
|
* restored, not the drivers personal bookkeeping.
|
|
|
|
*/
|
|
|
|
count = 0;
|
|
|
|
list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
|
|
|
|
save_crtcs[count++] = *crtc;
|
|
|
|
}
|
|
|
|
|
|
|
|
count = 0;
|
|
|
|
list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
|
|
|
|
save_encoders[count++] = *encoder;
|
|
|
|
}
|
|
|
|
|
|
|
|
count = 0;
|
|
|
|
list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
|
|
|
|
save_connectors[count++] = *connector;
|
|
|
|
}
|
|
|
|
|
2011-11-07 11:39:57 -07:00
|
|
|
save_set.crtc = set->crtc;
|
|
|
|
save_set.mode = &set->crtc->mode;
|
|
|
|
save_set.x = set->crtc->x;
|
|
|
|
save_set.y = set->crtc->y;
|
|
|
|
save_set.fb = set->crtc->fb;
|
|
|
|
|
2008-11-07 15:05:41 -07:00
|
|
|
/* We should be able to check here if the fb has the same properties
|
|
|
|
* and then just flip_or_move it */
|
|
|
|
if (set->crtc->fb != set->fb) {
|
2009-01-09 14:56:14 -07:00
|
|
|
/* If we have no fb then treat it as a full mode set */
|
2009-02-23 17:09:34 -07:00
|
|
|
if (set->crtc->fb == NULL) {
|
2009-07-19 23:48:07 -06:00
|
|
|
DRM_DEBUG_KMS("crtc has no fb, full mode set\n");
|
2009-01-09 14:56:14 -07:00
|
|
|
mode_changed = true;
|
2009-08-03 06:43:59 -06:00
|
|
|
} else if (set->fb == NULL) {
|
|
|
|
mode_changed = true;
|
2011-06-24 13:19:26 -06:00
|
|
|
} else if (set->fb->depth != set->crtc->fb->depth) {
|
|
|
|
mode_changed = true;
|
|
|
|
} else if (set->fb->bits_per_pixel !=
|
|
|
|
set->crtc->fb->bits_per_pixel) {
|
|
|
|
mode_changed = true;
|
2010-02-10 21:28:58 -07:00
|
|
|
} else
|
2009-01-09 14:56:14 -07:00
|
|
|
fb_changed = true;
|
2008-11-07 15:05:41 -07:00
|
|
|
}
|
|
|
|
|
|
|
|
if (set->x != set->crtc->x || set->y != set->crtc->y)
|
2009-01-09 14:56:14 -07:00
|
|
|
fb_changed = true;
|
2008-11-07 15:05:41 -07:00
|
|
|
|
|
|
|
if (set->mode && !drm_mode_equal(set->mode, &set->crtc->mode)) {
|
2009-07-19 23:48:07 -06:00
|
|
|
DRM_DEBUG_KMS("modes are different, full mode set\n");
|
2008-11-07 15:05:41 -07:00
|
|
|
drm_mode_debug_printmodeline(&set->crtc->mode);
|
|
|
|
drm_mode_debug_printmodeline(set->mode);
|
2009-01-09 14:56:14 -07:00
|
|
|
mode_changed = true;
|
2008-11-07 15:05:41 -07:00
|
|
|
}
|
|
|
|
|
|
|
|
/* a) traverse passed in connector list and get encoders for them */
|
|
|
|
count = 0;
|
|
|
|
list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
|
|
|
|
struct drm_connector_helper_funcs *connector_funcs =
|
|
|
|
connector->helper_private;
|
|
|
|
new_encoder = connector->encoder;
|
|
|
|
for (ro = 0; ro < set->num_connectors; ro++) {
|
|
|
|
if (set->connectors[ro] == connector) {
|
|
|
|
new_encoder = connector_funcs->best_encoder(connector);
|
|
|
|
/* if we can't get an encoder for a connector
|
|
|
|
we are setting now - then fail */
|
|
|
|
if (new_encoder == NULL)
|
|
|
|
/* don't break so fail path works correct */
|
|
|
|
fail = 1;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
if (new_encoder != connector->encoder) {
|
2009-07-19 23:48:07 -06:00
|
|
|
DRM_DEBUG_KMS("encoder changed, full mode switch\n");
|
2009-01-09 14:56:14 -07:00
|
|
|
mode_changed = true;
|
2009-08-18 16:56:45 -06:00
|
|
|
/* If the encoder is reused for another connector, then
|
|
|
|
* the appropriate crtc will be set later.
|
|
|
|
*/
|
2009-08-31 19:39:04 -06:00
|
|
|
if (connector->encoder)
|
|
|
|
connector->encoder->crtc = NULL;
|
2008-11-07 15:05:41 -07:00
|
|
|
connector->encoder = new_encoder;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
if (fail) {
|
|
|
|
ret = -EINVAL;
|
2009-08-27 02:18:29 -06:00
|
|
|
goto fail;
|
2008-11-07 15:05:41 -07:00
|
|
|
}
|
|
|
|
|
|
|
|
count = 0;
|
|
|
|
list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
|
|
|
|
if (!connector->encoder)
|
|
|
|
continue;
|
|
|
|
|
|
|
|
if (connector->encoder->crtc == set->crtc)
|
|
|
|
new_crtc = NULL;
|
|
|
|
else
|
|
|
|
new_crtc = connector->encoder->crtc;
|
|
|
|
|
|
|
|
for (ro = 0; ro < set->num_connectors; ro++) {
|
|
|
|
if (set->connectors[ro] == connector)
|
|
|
|
new_crtc = set->crtc;
|
|
|
|
}
|
2009-02-23 17:09:34 -07:00
|
|
|
|
|
|
|
/* Make sure the new CRTC will work with the encoder */
|
|
|
|
if (new_crtc &&
|
|
|
|
!drm_encoder_crtc_ok(connector->encoder, new_crtc)) {
|
|
|
|
ret = -EINVAL;
|
2009-08-27 02:18:29 -06:00
|
|
|
goto fail;
|
2009-02-23 17:09:34 -07:00
|
|
|
}
|
2008-11-07 15:05:41 -07:00
|
|
|
if (new_crtc != connector->encoder->crtc) {
|
2009-07-19 23:48:07 -06:00
|
|
|
DRM_DEBUG_KMS("crtc changed, full mode switch\n");
|
2009-01-09 14:56:14 -07:00
|
|
|
mode_changed = true;
|
2008-11-07 15:05:41 -07:00
|
|
|
connector->encoder->crtc = new_crtc;
|
|
|
|
}
|
2010-07-15 13:43:25 -06:00
|
|
|
if (new_crtc) {
|
|
|
|
DRM_DEBUG_KMS("[CONNECTOR:%d:%s] to [CRTC:%d]\n",
|
|
|
|
connector->base.id, drm_get_connector_name(connector),
|
|
|
|
new_crtc->base.id);
|
|
|
|
} else {
|
|
|
|
DRM_DEBUG_KMS("[CONNECTOR:%d:%s] to [NOCRTC]\n",
|
|
|
|
connector->base.id, drm_get_connector_name(connector));
|
|
|
|
}
|
2008-11-07 15:05:41 -07:00
|
|
|
}
|
|
|
|
|
|
|
|
/* mode_set_base is not a required function */
|
2009-01-09 14:56:14 -07:00
|
|
|
if (fb_changed && !crtc_funcs->mode_set_base)
|
|
|
|
mode_changed = true;
|
2008-11-07 15:05:41 -07:00
|
|
|
|
2009-01-09 14:56:14 -07:00
|
|
|
if (mode_changed) {
|
2011-01-28 04:53:03 -07:00
|
|
|
set->crtc->enabled = drm_helper_crtc_in_use(set->crtc);
|
|
|
|
if (set->crtc->enabled) {
|
2009-07-19 23:48:07 -06:00
|
|
|
DRM_DEBUG_KMS("attempting to set mode from"
|
|
|
|
" userspace\n");
|
2008-11-07 15:05:41 -07:00
|
|
|
drm_mode_debug_printmodeline(set->mode);
|
2010-09-09 02:41:32 -06:00
|
|
|
old_fb = set->crtc->fb;
|
|
|
|
set->crtc->fb = set->fb;
|
2008-11-07 15:05:41 -07:00
|
|
|
if (!drm_crtc_helper_set_mode(set->crtc, set->mode,
|
2008-12-17 20:14:46 -07:00
|
|
|
set->x, set->y,
|
|
|
|
old_fb)) {
|
2010-07-15 13:43:25 -06:00
|
|
|
DRM_ERROR("failed to set mode on [CRTC:%d]\n",
|
|
|
|
set->crtc->base.id);
|
2011-01-08 08:10:41 -07:00
|
|
|
set->crtc->fb = old_fb;
|
2008-11-07 15:05:41 -07:00
|
|
|
ret = -EINVAL;
|
2009-08-27 02:18:29 -06:00
|
|
|
goto fail;
|
2008-11-07 15:05:41 -07:00
|
|
|
}
|
2011-02-03 17:57:28 -07:00
|
|
|
DRM_DEBUG_KMS("Setting connector DPMS state to on\n");
|
|
|
|
for (i = 0; i < set->num_connectors; i++) {
|
|
|
|
DRM_DEBUG_KMS("\t[CONNECTOR:%d:%s] set DPMS on\n", set->connectors[i]->base.id,
|
|
|
|
drm_get_connector_name(set->connectors[i]));
|
2011-12-15 13:53:24 -07:00
|
|
|
set->connectors[i]->funcs->dpms(set->connectors[i], DRM_MODE_DPMS_ON);
|
2011-02-03 17:57:28 -07:00
|
|
|
}
|
2008-11-07 15:05:41 -07:00
|
|
|
}
|
|
|
|
drm_helper_disable_unused_functions(dev);
|
2009-01-09 14:56:14 -07:00
|
|
|
} else if (fb_changed) {
|
2009-09-17 18:43:52 -06:00
|
|
|
set->crtc->x = set->x;
|
|
|
|
set->crtc->y = set->y;
|
|
|
|
|
2008-12-17 20:14:46 -07:00
|
|
|
old_fb = set->crtc->fb;
|
2008-11-07 15:05:41 -07:00
|
|
|
if (set->crtc->fb != set->fb)
|
|
|
|
set->crtc->fb = set->fb;
|
2009-02-11 06:25:09 -07:00
|
|
|
ret = crtc_funcs->mode_set_base(set->crtc,
|
|
|
|
set->x, set->y, old_fb);
|
2011-01-08 08:10:41 -07:00
|
|
|
if (ret != 0) {
|
|
|
|
set->crtc->fb = old_fb;
|
2009-08-27 02:18:29 -06:00
|
|
|
goto fail;
|
2011-01-08 08:10:41 -07:00
|
|
|
}
|
2008-11-07 15:05:41 -07:00
|
|
|
}
|
|
|
|
|
2009-08-27 02:18:29 -06:00
|
|
|
kfree(save_connectors);
|
2008-11-07 15:05:41 -07:00
|
|
|
kfree(save_encoders);
|
|
|
|
kfree(save_crtcs);
|
|
|
|
return 0;
|
|
|
|
|
2009-08-27 02:18:29 -06:00
|
|
|
fail:
|
|
|
|
/* Restore all previous data. */
|
2008-11-07 15:05:41 -07:00
|
|
|
count = 0;
|
2009-08-27 02:18:29 -06:00
|
|
|
list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
|
|
|
|
*crtc = save_crtcs[count++];
|
|
|
|
}
|
2009-02-11 09:39:21 -07:00
|
|
|
|
2009-08-27 02:18:29 -06:00
|
|
|
count = 0;
|
|
|
|
list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
|
|
|
|
*encoder = save_encoders[count++];
|
2009-02-11 09:39:21 -07:00
|
|
|
}
|
2009-08-27 02:18:29 -06:00
|
|
|
|
2008-11-07 15:05:41 -07:00
|
|
|
count = 0;
|
|
|
|
list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
|
2009-08-27 02:18:29 -06:00
|
|
|
*connector = save_connectors[count++];
|
2008-11-07 15:05:41 -07:00
|
|
|
}
|
2009-08-27 02:18:29 -06:00
|
|
|
|
2011-11-07 11:39:57 -07:00
|
|
|
/* Try to restore the config */
|
|
|
|
if (mode_changed &&
|
|
|
|
!drm_crtc_helper_set_mode(save_set.crtc, save_set.mode, save_set.x,
|
|
|
|
save_set.y, save_set.fb))
|
|
|
|
DRM_ERROR("failed to restore config after modeset failure\n");
|
|
|
|
|
2009-08-27 02:18:29 -06:00
|
|
|
kfree(save_connectors);
|
2008-11-07 15:05:41 -07:00
|
|
|
kfree(save_encoders);
|
2009-08-27 02:18:29 -06:00
|
|
|
kfree(save_crtcs);
|
2008-11-07 15:05:41 -07:00
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(drm_crtc_helper_set_config);
|
|
|
|
|
2009-05-30 21:42:28 -06:00
|
|
|
static int drm_helper_choose_encoder_dpms(struct drm_encoder *encoder)
|
|
|
|
{
|
|
|
|
int dpms = DRM_MODE_DPMS_OFF;
|
|
|
|
struct drm_connector *connector;
|
|
|
|
struct drm_device *dev = encoder->dev;
|
|
|
|
|
|
|
|
list_for_each_entry(connector, &dev->mode_config.connector_list, head)
|
|
|
|
if (connector->encoder == encoder)
|
|
|
|
if (connector->dpms < dpms)
|
|
|
|
dpms = connector->dpms;
|
|
|
|
return dpms;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int drm_helper_choose_crtc_dpms(struct drm_crtc *crtc)
|
|
|
|
{
|
|
|
|
int dpms = DRM_MODE_DPMS_OFF;
|
|
|
|
struct drm_connector *connector;
|
|
|
|
struct drm_device *dev = crtc->dev;
|
|
|
|
|
|
|
|
list_for_each_entry(connector, &dev->mode_config.connector_list, head)
|
|
|
|
if (connector->encoder && connector->encoder->crtc == crtc)
|
|
|
|
if (connector->dpms < dpms)
|
|
|
|
dpms = connector->dpms;
|
|
|
|
return dpms;
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* drm_helper_connector_dpms
|
|
|
|
* @connector affected connector
|
|
|
|
* @mode DPMS mode
|
|
|
|
*
|
|
|
|
* Calls the low-level connector DPMS function, then
|
|
|
|
* calls appropriate encoder and crtc DPMS functions as well
|
|
|
|
*/
|
|
|
|
void drm_helper_connector_dpms(struct drm_connector *connector, int mode)
|
|
|
|
{
|
|
|
|
struct drm_encoder *encoder = connector->encoder;
|
|
|
|
struct drm_crtc *crtc = encoder ? encoder->crtc : NULL;
|
|
|
|
int old_dpms;
|
|
|
|
|
|
|
|
if (mode == connector->dpms)
|
|
|
|
return;
|
|
|
|
|
|
|
|
old_dpms = connector->dpms;
|
|
|
|
connector->dpms = mode;
|
|
|
|
|
|
|
|
/* from off to on, do crtc then encoder */
|
|
|
|
if (mode < old_dpms) {
|
|
|
|
if (crtc) {
|
|
|
|
struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private;
|
|
|
|
if (crtc_funcs->dpms)
|
|
|
|
(*crtc_funcs->dpms) (crtc,
|
|
|
|
drm_helper_choose_crtc_dpms(crtc));
|
|
|
|
}
|
|
|
|
if (encoder) {
|
|
|
|
struct drm_encoder_helper_funcs *encoder_funcs = encoder->helper_private;
|
|
|
|
if (encoder_funcs->dpms)
|
|
|
|
(*encoder_funcs->dpms) (encoder,
|
|
|
|
drm_helper_choose_encoder_dpms(encoder));
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/* from on to off, do encoder then crtc */
|
|
|
|
if (mode > old_dpms) {
|
|
|
|
if (encoder) {
|
|
|
|
struct drm_encoder_helper_funcs *encoder_funcs = encoder->helper_private;
|
|
|
|
if (encoder_funcs->dpms)
|
|
|
|
(*encoder_funcs->dpms) (encoder,
|
|
|
|
drm_helper_choose_encoder_dpms(encoder));
|
|
|
|
}
|
|
|
|
if (crtc) {
|
|
|
|
struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private;
|
|
|
|
if (crtc_funcs->dpms)
|
|
|
|
(*crtc_funcs->dpms) (crtc,
|
|
|
|
drm_helper_choose_crtc_dpms(crtc));
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(drm_helper_connector_dpms);
|
|
|
|
|
2008-11-07 15:05:41 -07:00
|
|
|
int drm_helper_mode_fill_fb_struct(struct drm_framebuffer *fb,
|
2011-11-14 15:51:28 -07:00
|
|
|
struct drm_mode_fb_cmd2 *mode_cmd)
|
2008-11-07 15:05:41 -07:00
|
|
|
{
|
2011-12-19 15:06:49 -07:00
|
|
|
int i;
|
|
|
|
|
2008-11-07 15:05:41 -07:00
|
|
|
fb->width = mode_cmd->width;
|
|
|
|
fb->height = mode_cmd->height;
|
2011-12-19 15:06:49 -07:00
|
|
|
for (i = 0; i < 4; i++) {
|
|
|
|
fb->pitches[i] = mode_cmd->pitches[i];
|
|
|
|
fb->offsets[i] = mode_cmd->offsets[i];
|
|
|
|
}
|
2011-11-29 13:02:54 -07:00
|
|
|
drm_fb_get_bpp_depth(mode_cmd->pixel_format, &fb->depth,
|
2011-11-14 15:51:28 -07:00
|
|
|
&fb->bits_per_pixel);
|
|
|
|
fb->pixel_format = mode_cmd->pixel_format;
|
2008-11-07 15:05:41 -07:00
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(drm_helper_mode_fill_fb_struct);
|
|
|
|
|
|
|
|
int drm_helper_resume_force_mode(struct drm_device *dev)
|
|
|
|
{
|
|
|
|
struct drm_crtc *crtc;
|
2009-12-30 23:30:46 -07:00
|
|
|
struct drm_encoder *encoder;
|
|
|
|
struct drm_encoder_helper_funcs *encoder_funcs;
|
|
|
|
struct drm_crtc_helper_funcs *crtc_funcs;
|
2008-11-07 15:05:41 -07:00
|
|
|
int ret;
|
|
|
|
|
|
|
|
list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
|
|
|
|
|
|
|
|
if (!crtc->enabled)
|
|
|
|
continue;
|
|
|
|
|
2008-12-17 20:14:46 -07:00
|
|
|
ret = drm_crtc_helper_set_mode(crtc, &crtc->mode,
|
|
|
|
crtc->x, crtc->y, crtc->fb);
|
2008-11-07 15:05:41 -07:00
|
|
|
|
|
|
|
if (ret == false)
|
|
|
|
DRM_ERROR("failed to set mode on crtc %p\n", crtc);
|
2009-12-30 23:30:46 -07:00
|
|
|
|
|
|
|
/* Turn off outputs that were already powered off */
|
|
|
|
if (drm_helper_choose_crtc_dpms(crtc)) {
|
|
|
|
list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
|
|
|
|
|
|
|
|
if(encoder->crtc != crtc)
|
|
|
|
continue;
|
|
|
|
|
|
|
|
encoder_funcs = encoder->helper_private;
|
|
|
|
if (encoder_funcs->dpms)
|
|
|
|
(*encoder_funcs->dpms) (encoder,
|
|
|
|
drm_helper_choose_encoder_dpms(encoder));
|
|
|
|
}
|
2010-08-06 08:03:31 -06:00
|
|
|
|
|
|
|
crtc_funcs = crtc->helper_private;
|
|
|
|
if (crtc_funcs->dpms)
|
|
|
|
(*crtc_funcs->dpms) (crtc,
|
|
|
|
drm_helper_choose_crtc_dpms(crtc));
|
2009-12-30 23:30:46 -07:00
|
|
|
}
|
2008-11-07 15:05:41 -07:00
|
|
|
}
|
2009-07-08 00:13:13 -06:00
|
|
|
/* disable the unused connectors while restoring the modesetting */
|
|
|
|
drm_helper_disable_unused_functions(dev);
|
2008-11-07 15:05:41 -07:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(drm_helper_resume_force_mode);
|
2010-05-07 00:42:51 -06:00
|
|
|
|
2012-10-23 12:23:32 -06:00
|
|
|
void drm_kms_helper_hotplug_event(struct drm_device *dev)
|
|
|
|
{
|
|
|
|
/* send a uevent + call fbdev */
|
|
|
|
drm_sysfs_hotplug_event(dev);
|
|
|
|
if (dev->mode_config.funcs->output_poll_changed)
|
|
|
|
dev->mode_config.funcs->output_poll_changed(dev);
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(drm_kms_helper_hotplug_event);
|
|
|
|
|
2010-05-07 00:42:51 -06:00
|
|
|
#define DRM_OUTPUT_POLL_PERIOD (10*HZ)
|
2010-07-20 14:09:02 -06:00
|
|
|
static void output_poll_execute(struct work_struct *work)
|
2010-05-07 00:42:51 -06:00
|
|
|
{
|
2010-07-20 14:09:02 -06:00
|
|
|
struct delayed_work *delayed_work = to_delayed_work(work);
|
|
|
|
struct drm_device *dev = container_of(delayed_work, struct drm_device, mode_config.output_poll_work);
|
2010-05-07 00:42:51 -06:00
|
|
|
struct drm_connector *connector;
|
2010-11-26 11:45:59 -07:00
|
|
|
enum drm_connector_status old_status;
|
2010-05-07 00:42:51 -06:00
|
|
|
bool repoll = false, changed = false;
|
|
|
|
|
2010-08-20 02:13:36 -06:00
|
|
|
if (!drm_kms_helper_poll)
|
|
|
|
return;
|
|
|
|
|
2010-05-07 00:42:51 -06:00
|
|
|
mutex_lock(&dev->mode_config.mutex);
|
|
|
|
list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
|
|
|
|
|
2012-10-23 12:23:33 -06:00
|
|
|
/* Ignore HPD capable connectors and connectors where we don't
|
|
|
|
* want any hotplug detection at all for polling. */
|
|
|
|
if (!connector->polled || connector->polled == DRM_CONNECTOR_POLL_HPD)
|
2010-05-07 00:42:51 -06:00
|
|
|
continue;
|
|
|
|
|
|
|
|
else if (connector->polled & (DRM_CONNECTOR_POLL_CONNECT | DRM_CONNECTOR_POLL_DISCONNECT))
|
|
|
|
repoll = true;
|
|
|
|
|
|
|
|
old_status = connector->status;
|
|
|
|
/* if we are connected and don't want to poll for disconnect
|
|
|
|
skip it */
|
|
|
|
if (old_status == connector_status_connected &&
|
2012-10-23 12:23:33 -06:00
|
|
|
!(connector->polled & DRM_CONNECTOR_POLL_DISCONNECT))
|
2010-05-07 00:42:51 -06:00
|
|
|
continue;
|
|
|
|
|
2010-11-26 11:45:59 -07:00
|
|
|
connector->status = connector->funcs->detect(connector, false);
|
2010-12-21 15:49:28 -07:00
|
|
|
DRM_DEBUG_KMS("[CONNECTOR:%d:%s] status updated from %d to %d\n",
|
|
|
|
connector->base.id,
|
|
|
|
drm_get_connector_name(connector),
|
|
|
|
old_status, connector->status);
|
2010-11-26 11:45:59 -07:00
|
|
|
if (old_status != connector->status)
|
2010-05-07 00:42:51 -06:00
|
|
|
changed = true;
|
|
|
|
}
|
|
|
|
|
|
|
|
mutex_unlock(&dev->mode_config.mutex);
|
|
|
|
|
2012-10-23 12:23:32 -06:00
|
|
|
if (changed)
|
|
|
|
drm_kms_helper_hotplug_event(dev);
|
2010-05-07 00:42:51 -06:00
|
|
|
|
2010-08-09 04:01:27 -06:00
|
|
|
if (repoll)
|
2012-08-20 15:51:24 -06:00
|
|
|
schedule_delayed_work(delayed_work, DRM_OUTPUT_POLL_PERIOD);
|
2010-05-07 00:42:51 -06:00
|
|
|
}
|
|
|
|
|
2010-05-31 17:09:06 -06:00
|
|
|
void drm_kms_helper_poll_disable(struct drm_device *dev)
|
|
|
|
{
|
|
|
|
if (!dev->mode_config.poll_enabled)
|
|
|
|
return;
|
2010-07-20 14:09:02 -06:00
|
|
|
cancel_delayed_work_sync(&dev->mode_config.output_poll_work);
|
2010-05-31 17:09:06 -06:00
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(drm_kms_helper_poll_disable);
|
|
|
|
|
|
|
|
void drm_kms_helper_poll_enable(struct drm_device *dev)
|
2010-05-07 00:42:51 -06:00
|
|
|
{
|
|
|
|
bool poll = false;
|
2010-05-31 17:09:06 -06:00
|
|
|
struct drm_connector *connector;
|
2010-05-07 00:42:51 -06:00
|
|
|
|
2010-08-20 02:13:36 -06:00
|
|
|
if (!dev->mode_config.poll_enabled || !drm_kms_helper_poll)
|
|
|
|
return;
|
|
|
|
|
2010-05-07 00:42:51 -06:00
|
|
|
list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
|
|
|
|
if (connector->polled)
|
|
|
|
poll = true;
|
|
|
|
}
|
|
|
|
|
2010-08-09 04:01:27 -06:00
|
|
|
if (poll)
|
2012-08-20 15:51:24 -06:00
|
|
|
schedule_delayed_work(&dev->mode_config.output_poll_work, DRM_OUTPUT_POLL_PERIOD);
|
2010-05-07 00:42:51 -06:00
|
|
|
}
|
2010-05-31 17:09:06 -06:00
|
|
|
EXPORT_SYMBOL(drm_kms_helper_poll_enable);
|
|
|
|
|
2012-10-23 12:23:33 -06:00
|
|
|
static void hpd_irq_event_execute(struct work_struct *work);
|
|
|
|
|
2010-05-31 17:09:06 -06:00
|
|
|
void drm_kms_helper_poll_init(struct drm_device *dev)
|
|
|
|
{
|
2010-07-20 14:09:02 -06:00
|
|
|
INIT_DELAYED_WORK(&dev->mode_config.output_poll_work, output_poll_execute);
|
2012-10-23 12:23:33 -06:00
|
|
|
INIT_DELAYED_WORK(&dev->mode_config.hpd_irq_work, hpd_irq_event_execute);
|
2010-05-31 17:09:06 -06:00
|
|
|
dev->mode_config.poll_enabled = true;
|
|
|
|
|
|
|
|
drm_kms_helper_poll_enable(dev);
|
|
|
|
}
|
2010-05-07 00:42:51 -06:00
|
|
|
EXPORT_SYMBOL(drm_kms_helper_poll_init);
|
|
|
|
|
|
|
|
void drm_kms_helper_poll_fini(struct drm_device *dev)
|
|
|
|
{
|
2010-05-31 17:09:06 -06:00
|
|
|
drm_kms_helper_poll_disable(dev);
|
2010-05-07 00:42:51 -06:00
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(drm_kms_helper_poll_fini);
|
|
|
|
|
2012-10-23 12:23:33 -06:00
|
|
|
static void hpd_irq_event_execute(struct work_struct *work)
|
2010-05-07 00:42:51 -06:00
|
|
|
{
|
2012-10-23 12:23:33 -06:00
|
|
|
struct delayed_work *delayed_work = to_delayed_work(work);
|
|
|
|
struct drm_device *dev = container_of(delayed_work, struct drm_device, mode_config.hpd_irq_work);
|
|
|
|
struct drm_connector *connector;
|
|
|
|
enum drm_connector_status old_status;
|
|
|
|
bool changed = false;
|
|
|
|
|
2010-05-07 00:42:51 -06:00
|
|
|
if (!dev->mode_config.poll_enabled)
|
|
|
|
return;
|
2010-08-20 02:13:36 -06:00
|
|
|
|
2012-10-23 12:23:33 -06:00
|
|
|
mutex_lock(&dev->mode_config.mutex);
|
|
|
|
list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
|
|
|
|
|
|
|
|
/* Only handle HPD capable connectors. */
|
|
|
|
if (!(connector->polled & DRM_CONNECTOR_POLL_HPD))
|
|
|
|
continue;
|
|
|
|
|
|
|
|
old_status = connector->status;
|
|
|
|
|
|
|
|
connector->status = connector->funcs->detect(connector, false);
|
|
|
|
DRM_DEBUG_KMS("[CONNECTOR:%d:%s] status updated from %d to %d\n",
|
|
|
|
connector->base.id,
|
|
|
|
drm_get_connector_name(connector),
|
|
|
|
old_status, connector->status);
|
|
|
|
if (old_status != connector->status)
|
|
|
|
changed = true;
|
|
|
|
}
|
|
|
|
|
|
|
|
mutex_unlock(&dev->mode_config.mutex);
|
|
|
|
|
|
|
|
if (changed)
|
|
|
|
drm_kms_helper_hotplug_event(dev);
|
|
|
|
}
|
|
|
|
|
|
|
|
void drm_helper_hpd_irq_event(struct drm_device *dev)
|
|
|
|
{
|
|
|
|
cancel_delayed_work(&dev->mode_config.hpd_irq_work);
|
2010-08-20 02:13:36 -06:00
|
|
|
if (drm_kms_helper_poll)
|
2012-10-23 12:23:33 -06:00
|
|
|
schedule_delayed_work(&dev->mode_config.hpd_irq_work, 0);
|
2010-05-07 00:42:51 -06:00
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(drm_helper_hpd_irq_event);
|