2009-08-27 23:46:53 -06:00
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/*
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* Copyright (c) 2006-2009 Red Hat Inc.
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* Copyright (c) 2006-2008 Intel Corporation
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* Copyright (c) 2007 Dave Airlie <airlied@linux.ie>
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*
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* DRM framebuffer helper functions
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*
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* Permission to use, copy, modify, distribute, and sell this software and its
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* documentation for any purpose is hereby granted without fee, provided that
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* the above copyright notice appear in all copies and that both that copyright
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* notice and this permission notice appear in supporting documentation, and
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* that the name of the copyright holders not be used in advertising or
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* publicity pertaining to distribution of the software without specific,
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* written prior permission. The copyright holders make no representations
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* about the suitability of this software for any purpose. It is provided "as
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* is" without express or implied warranty.
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*
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* THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
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* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
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* EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
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* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
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* DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
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* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
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* OF THIS SOFTWARE.
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*
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* Authors:
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* Dave Airlie <airlied@linux.ie>
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* Jesse Barnes <jesse.barnes@intel.com>
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*/
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2012-11-14 20:43:29 -07:00
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#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
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2010-02-02 15:40:32 -07:00
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#include <linux/kernel.h>
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2009-08-27 23:46:53 -06:00
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#include <linux/sysrq.h>
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include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
percpu.h is included by sched.h and module.h and thus ends up being
included when building most .c files. percpu.h includes slab.h which
in turn includes gfp.h making everything defined by the two files
universally available and complicating inclusion dependencies.
percpu.h -> slab.h dependency is about to be removed. Prepare for
this change by updating users of gfp and slab facilities include those
headers directly instead of assuming availability. As this conversion
needs to touch large number of source files, the following script is
used as the basis of conversion.
http://userweb.kernel.org/~tj/misc/slabh-sweep.py
The script does the followings.
* Scan files for gfp and slab usages and update includes such that
only the necessary includes are there. ie. if only gfp is used,
gfp.h, if slab is used, slab.h.
* When the script inserts a new include, it looks at the include
blocks and try to put the new include such that its order conforms
to its surrounding. It's put in the include block which contains
core kernel includes, in the same order that the rest are ordered -
alphabetical, Christmas tree, rev-Xmas-tree or at the end if there
doesn't seem to be any matching order.
* If the script can't find a place to put a new include (mostly
because the file doesn't have fitting include block), it prints out
an error message indicating which .h file needs to be added to the
file.
The conversion was done in the following steps.
1. The initial automatic conversion of all .c files updated slightly
over 4000 files, deleting around 700 includes and adding ~480 gfp.h
and ~3000 slab.h inclusions. The script emitted errors for ~400
files.
2. Each error was manually checked. Some didn't need the inclusion,
some needed manual addition while adding it to implementation .h or
embedding .c file was more appropriate for others. This step added
inclusions to around 150 files.
3. The script was run again and the output was compared to the edits
from #2 to make sure no file was left behind.
4. Several build tests were done and a couple of problems were fixed.
e.g. lib/decompress_*.c used malloc/free() wrappers around slab
APIs requiring slab.h to be added manually.
5. The script was run on all .h files but without automatically
editing them as sprinkling gfp.h and slab.h inclusions around .h
files could easily lead to inclusion dependency hell. Most gfp.h
inclusion directives were ignored as stuff from gfp.h was usually
wildly available and often used in preprocessor macros. Each
slab.h inclusion directive was examined and added manually as
necessary.
6. percpu.h was updated not to include slab.h.
7. Build test were done on the following configurations and failures
were fixed. CONFIG_GCOV_KERNEL was turned off for all tests (as my
distributed build env didn't work with gcov compiles) and a few
more options had to be turned off depending on archs to make things
build (like ipr on powerpc/64 which failed due to missing writeq).
* x86 and x86_64 UP and SMP allmodconfig and a custom test config.
* powerpc and powerpc64 SMP allmodconfig
* sparc and sparc64 SMP allmodconfig
* ia64 SMP allmodconfig
* s390 SMP allmodconfig
* alpha SMP allmodconfig
* um on x86_64 SMP allmodconfig
8. percpu.h modifications were reverted so that it could be applied as
a separate patch and serve as bisection point.
Given the fact that I had only a couple of failures from tests on step
6, I'm fairly confident about the coverage of this conversion patch.
If there is a breakage, it's likely to be something in one of the arch
headers which should be easily discoverable easily on most builds of
the specific arch.
Signed-off-by: Tejun Heo <tj@kernel.org>
Guess-its-ok-by: Christoph Lameter <cl@linux-foundation.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
2010-03-24 02:04:11 -06:00
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#include <linux/slab.h>
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2009-08-27 23:46:53 -06:00
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#include <linux/fb.h>
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2011-08-30 09:04:30 -06:00
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#include <linux/module.h>
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2012-10-02 11:01:07 -06:00
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#include <drm/drmP.h>
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#include <drm/drm_crtc.h>
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#include <drm/drm_fb_helper.h>
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#include <drm/drm_crtc_helper.h>
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2009-08-27 23:46:53 -06:00
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static LIST_HEAD(kernel_fb_helper_list);
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2012-11-01 07:45:17 -06:00
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/**
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* DOC: fbdev helpers
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*
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* The fb helper functions are useful to provide an fbdev on top of a drm kernel
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* mode setting driver. They can be used mostly independantely from the crtc
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* helper functions used by many drivers to implement the kernel mode setting
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* interfaces.
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2013-01-20 14:13:14 -07:00
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*
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* Initialization is done as a three-step process with drm_fb_helper_init(),
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* drm_fb_helper_single_add_all_connectors() and drm_fb_helper_initial_config().
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* Drivers with fancier requirements than the default beheviour can override the
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* second step with their own code. Teardown is done with drm_fb_helper_fini().
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*
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* At runtime drivers should restore the fbdev console by calling
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* drm_fb_helper_restore_fbdev_mode() from their ->lastclose callback. They
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* should also notify the fb helper code from updates to the output
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* configuration by calling drm_fb_helper_hotplug_event(). For easier
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* integration with the output polling code in drm_crtc_helper.c the modeset
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* code proves a ->output_poll_changed callback.
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*
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* All other functions exported by the fb helper library can be used to
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* implement the fbdev driver interface by the driver.
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2012-11-01 07:45:17 -06:00
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*/
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2013-01-20 14:13:14 -07:00
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/**
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* drm_fb_helper_single_add_all_connectors() - add all connectors to fbdev
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* emulation helper
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* @fb_helper: fbdev initialized with drm_fb_helper_init
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*
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* This functions adds all the available connectors for use with the given
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* fb_helper. This is a separate step to allow drivers to freely assign
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* connectors to the fbdev, e.g. if some are reserved for special purposes or
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* not adequate to be used for the fbcon.
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*
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* Since this is part of the initial setup before the fbdev is published, no
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* locking is required.
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*/
|
2010-03-29 23:34:15 -06:00
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int drm_fb_helper_single_add_all_connectors(struct drm_fb_helper *fb_helper)
|
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
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{
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2010-03-29 23:34:15 -06:00
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struct drm_device *dev = fb_helper->dev;
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struct drm_connector *connector;
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int i;
|
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
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|
2010-03-29 23:34:15 -06:00
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list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
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struct drm_fb_helper_connector *fb_helper_connector;
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fb_helper_connector = kzalloc(sizeof(struct drm_fb_helper_connector), GFP_KERNEL);
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if (!fb_helper_connector)
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goto fail;
|
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
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|
2010-03-29 23:34:15 -06:00
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fb_helper_connector->connector = connector;
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fb_helper->connector_info[fb_helper->connector_count++] = fb_helper_connector;
|
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}
|
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
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|
return 0;
|
2010-03-29 23:34:15 -06:00
|
|
|
fail:
|
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|
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for (i = 0; i < fb_helper->connector_count; i++) {
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|
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kfree(fb_helper->connector_info[i]);
|
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|
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fb_helper->connector_info[i] = NULL;
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|
|
}
|
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|
|
fb_helper->connector_count = 0;
|
|
|
|
return -ENOMEM;
|
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
|
|
|
}
|
2010-03-29 23:34:15 -06:00
|
|
|
EXPORT_SYMBOL(drm_fb_helper_single_add_all_connectors);
|
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
|
|
|
|
2010-03-29 23:34:15 -06:00
|
|
|
static int drm_fb_helper_parse_command_line(struct drm_fb_helper *fb_helper)
|
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
|
|
|
{
|
2010-03-29 23:34:15 -06:00
|
|
|
struct drm_fb_helper_connector *fb_helper_conn;
|
|
|
|
int i;
|
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
|
|
|
|
2010-03-29 23:34:15 -06:00
|
|
|
for (i = 0; i < fb_helper->connector_count; i++) {
|
2011-04-17 00:43:32 -06:00
|
|
|
struct drm_cmdline_mode *mode;
|
|
|
|
struct drm_connector *connector;
|
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
|
|
|
char *option = NULL;
|
|
|
|
|
2010-03-29 23:34:15 -06:00
|
|
|
fb_helper_conn = fb_helper->connector_info[i];
|
2011-04-17 00:43:32 -06:00
|
|
|
connector = fb_helper_conn->connector;
|
|
|
|
mode = &fb_helper_conn->cmdline_mode;
|
2010-03-29 23:34:15 -06:00
|
|
|
|
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
|
|
|
/* do something on return - turn off connector maybe */
|
2011-04-17 00:43:32 -06:00
|
|
|
if (fb_get_options(drm_get_connector_name(connector), &option))
|
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
|
|
|
continue;
|
|
|
|
|
2011-04-17 00:43:32 -06:00
|
|
|
if (drm_mode_parse_command_line_for_connector(option,
|
|
|
|
connector,
|
|
|
|
mode)) {
|
|
|
|
if (mode->force) {
|
|
|
|
const char *s;
|
|
|
|
switch (mode->force) {
|
2012-11-14 20:43:28 -07:00
|
|
|
case DRM_FORCE_OFF:
|
|
|
|
s = "OFF";
|
|
|
|
break;
|
|
|
|
case DRM_FORCE_ON_DIGITAL:
|
|
|
|
s = "ON - dig";
|
|
|
|
break;
|
2011-04-17 00:43:32 -06:00
|
|
|
default:
|
2012-11-14 20:43:28 -07:00
|
|
|
case DRM_FORCE_ON:
|
|
|
|
s = "ON";
|
|
|
|
break;
|
2011-04-17 00:43:32 -06:00
|
|
|
}
|
|
|
|
|
|
|
|
DRM_INFO("forcing %s connector %s\n",
|
|
|
|
drm_get_connector_name(connector), s);
|
|
|
|
connector->force = mode->force;
|
|
|
|
}
|
|
|
|
|
|
|
|
DRM_DEBUG_KMS("cmdline mode for connector %s %dx%d@%dHz%s%s%s\n",
|
|
|
|
drm_get_connector_name(connector),
|
|
|
|
mode->xres, mode->yres,
|
|
|
|
mode->refresh_specified ? mode->refresh : 60,
|
|
|
|
mode->rb ? " reduced blanking" : "",
|
|
|
|
mode->margins ? " with margins" : "",
|
|
|
|
mode->interlace ? " interlaced" : "");
|
|
|
|
}
|
|
|
|
|
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
|
|
|
}
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2010-10-13 13:09:43 -06:00
|
|
|
static void drm_fb_helper_save_lut_atomic(struct drm_crtc *crtc, struct drm_fb_helper *helper)
|
|
|
|
{
|
|
|
|
uint16_t *r_base, *g_base, *b_base;
|
|
|
|
int i;
|
|
|
|
|
2013-05-27 11:19:57 -06:00
|
|
|
if (helper->funcs->gamma_get == NULL)
|
|
|
|
return;
|
|
|
|
|
2010-10-13 13:09:43 -06:00
|
|
|
r_base = crtc->gamma_store;
|
|
|
|
g_base = r_base + crtc->gamma_size;
|
|
|
|
b_base = g_base + crtc->gamma_size;
|
|
|
|
|
|
|
|
for (i = 0; i < crtc->gamma_size; i++)
|
|
|
|
helper->funcs->gamma_get(crtc, &r_base[i], &g_base[i], &b_base[i], i);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void drm_fb_helper_restore_lut_atomic(struct drm_crtc *crtc)
|
|
|
|
{
|
|
|
|
uint16_t *r_base, *g_base, *b_base;
|
|
|
|
|
2012-05-17 05:27:24 -06:00
|
|
|
if (crtc->funcs->gamma_set == NULL)
|
|
|
|
return;
|
|
|
|
|
2010-10-13 13:09:43 -06:00
|
|
|
r_base = crtc->gamma_store;
|
|
|
|
g_base = r_base + crtc->gamma_size;
|
|
|
|
b_base = g_base + crtc->gamma_size;
|
|
|
|
|
|
|
|
crtc->funcs->gamma_set(crtc, r_base, g_base, b_base, 0, crtc->gamma_size);
|
|
|
|
}
|
|
|
|
|
2013-01-20 14:13:14 -07:00
|
|
|
/**
|
|
|
|
* drm_fb_helper_debug_enter - implementation for ->fb_debug_enter
|
|
|
|
* @info: fbdev registered by the helper
|
|
|
|
*/
|
2010-08-05 08:22:31 -06:00
|
|
|
int drm_fb_helper_debug_enter(struct fb_info *info)
|
|
|
|
{
|
|
|
|
struct drm_fb_helper *helper = info->par;
|
|
|
|
struct drm_crtc_helper_funcs *funcs;
|
|
|
|
int i;
|
|
|
|
|
|
|
|
if (list_empty(&kernel_fb_helper_list))
|
|
|
|
return false;
|
|
|
|
|
|
|
|
list_for_each_entry(helper, &kernel_fb_helper_list, kernel_fb_list) {
|
|
|
|
for (i = 0; i < helper->crtc_count; i++) {
|
|
|
|
struct drm_mode_set *mode_set =
|
|
|
|
&helper->crtc_info[i].mode_set;
|
|
|
|
|
|
|
|
if (!mode_set->crtc->enabled)
|
|
|
|
continue;
|
|
|
|
|
|
|
|
funcs = mode_set->crtc->helper_private;
|
2010-10-13 13:09:43 -06:00
|
|
|
drm_fb_helper_save_lut_atomic(mode_set->crtc, helper);
|
2010-08-05 08:22:31 -06:00
|
|
|
funcs->mode_set_base_atomic(mode_set->crtc,
|
|
|
|
mode_set->fb,
|
|
|
|
mode_set->x,
|
2010-09-26 05:47:25 -06:00
|
|
|
mode_set->y,
|
2010-10-13 13:09:44 -06:00
|
|
|
ENTER_ATOMIC_MODE_SET);
|
2010-08-05 08:22:31 -06:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(drm_fb_helper_debug_enter);
|
|
|
|
|
|
|
|
/* Find the real fb for a given fb helper CRTC */
|
|
|
|
static struct drm_framebuffer *drm_mode_config_fb(struct drm_crtc *crtc)
|
|
|
|
{
|
|
|
|
struct drm_device *dev = crtc->dev;
|
|
|
|
struct drm_crtc *c;
|
|
|
|
|
|
|
|
list_for_each_entry(c, &dev->mode_config.crtc_list, head) {
|
|
|
|
if (crtc->base.id == c->base.id)
|
|
|
|
return c->fb;
|
|
|
|
}
|
|
|
|
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
|
2013-01-20 14:13:14 -07:00
|
|
|
/**
|
|
|
|
* drm_fb_helper_debug_leave - implementation for ->fb_debug_leave
|
|
|
|
* @info: fbdev registered by the helper
|
|
|
|
*/
|
2010-08-05 08:22:31 -06:00
|
|
|
int drm_fb_helper_debug_leave(struct fb_info *info)
|
|
|
|
{
|
|
|
|
struct drm_fb_helper *helper = info->par;
|
|
|
|
struct drm_crtc *crtc;
|
|
|
|
struct drm_crtc_helper_funcs *funcs;
|
|
|
|
struct drm_framebuffer *fb;
|
|
|
|
int i;
|
|
|
|
|
|
|
|
for (i = 0; i < helper->crtc_count; i++) {
|
|
|
|
struct drm_mode_set *mode_set = &helper->crtc_info[i].mode_set;
|
|
|
|
crtc = mode_set->crtc;
|
|
|
|
funcs = crtc->helper_private;
|
|
|
|
fb = drm_mode_config_fb(crtc);
|
|
|
|
|
|
|
|
if (!crtc->enabled)
|
|
|
|
continue;
|
|
|
|
|
|
|
|
if (!fb) {
|
|
|
|
DRM_ERROR("no fb to restore??\n");
|
|
|
|
continue;
|
|
|
|
}
|
|
|
|
|
2010-10-13 13:09:43 -06:00
|
|
|
drm_fb_helper_restore_lut_atomic(mode_set->crtc);
|
2010-08-05 08:22:31 -06:00
|
|
|
funcs->mode_set_base_atomic(mode_set->crtc, fb, crtc->x,
|
2010-10-13 13:09:44 -06:00
|
|
|
crtc->y, LEAVE_ATOMIC_MODE_SET);
|
2010-08-05 08:22:31 -06:00
|
|
|
}
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(drm_fb_helper_debug_leave);
|
|
|
|
|
2013-01-20 09:32:21 -07:00
|
|
|
/**
|
|
|
|
* drm_fb_helper_restore_fbdev_mode - restore fbdev configuration
|
|
|
|
* @fb_helper: fbcon to restore
|
|
|
|
*
|
2013-01-20 14:13:14 -07:00
|
|
|
* This should be called from driver's drm ->lastclose callback
|
|
|
|
* when implementing an fbcon on top of kms using this helper. This ensures that
|
|
|
|
* the user isn't greeted with a black screen when e.g. X dies.
|
2013-01-20 09:32:21 -07:00
|
|
|
*/
|
2011-04-21 15:18:32 -06:00
|
|
|
bool drm_fb_helper_restore_fbdev_mode(struct drm_fb_helper *fb_helper)
|
|
|
|
{
|
2013-06-03 07:10:42 -06:00
|
|
|
struct drm_device *dev = fb_helper->dev;
|
|
|
|
struct drm_plane *plane;
|
2011-04-21 15:18:32 -06:00
|
|
|
bool error = false;
|
2013-06-03 07:10:42 -06:00
|
|
|
int i;
|
|
|
|
|
|
|
|
drm_warn_on_modeset_not_all_locked(dev);
|
2013-01-20 09:32:21 -07:00
|
|
|
|
2013-06-03 07:10:42 -06:00
|
|
|
list_for_each_entry(plane, &dev->mode_config.plane_list, head)
|
|
|
|
drm_plane_force_disable(plane);
|
2013-01-20 09:32:21 -07:00
|
|
|
|
2011-04-21 15:18:32 -06:00
|
|
|
for (i = 0; i < fb_helper->crtc_count; i++) {
|
|
|
|
struct drm_mode_set *mode_set = &fb_helper->crtc_info[i].mode_set;
|
2013-06-03 07:10:42 -06:00
|
|
|
struct drm_crtc *crtc = mode_set->crtc;
|
|
|
|
int ret;
|
|
|
|
|
|
|
|
if (crtc->funcs->cursor_set) {
|
|
|
|
ret = crtc->funcs->cursor_set(crtc, NULL, 0, 0, 0);
|
|
|
|
if (ret)
|
|
|
|
error = true;
|
|
|
|
}
|
|
|
|
|
2012-12-11 05:47:23 -07:00
|
|
|
ret = drm_mode_set_config_internal(mode_set);
|
2011-04-21 15:18:32 -06:00
|
|
|
if (ret)
|
|
|
|
error = true;
|
|
|
|
}
|
|
|
|
return error;
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(drm_fb_helper_restore_fbdev_mode);
|
|
|
|
|
2013-01-20 10:09:52 -07:00
|
|
|
/*
|
|
|
|
* restore fbcon display for all kms driver's using this helper, used for sysrq
|
|
|
|
* and panic handling.
|
|
|
|
*/
|
2012-08-01 05:45:32 -06:00
|
|
|
static bool drm_fb_helper_force_kernel_mode(void)
|
2009-08-27 23:46:53 -06:00
|
|
|
{
|
|
|
|
bool ret, error = false;
|
|
|
|
struct drm_fb_helper *helper;
|
|
|
|
|
|
|
|
if (list_empty(&kernel_fb_helper_list))
|
|
|
|
return false;
|
|
|
|
|
|
|
|
list_for_each_entry(helper, &kernel_fb_helper_list, kernel_fb_list) {
|
2011-04-21 15:18:32 -06:00
|
|
|
if (helper->dev->switch_power_state == DRM_SWITCH_POWER_OFF)
|
|
|
|
continue;
|
|
|
|
|
|
|
|
ret = drm_fb_helper_restore_fbdev_mode(helper);
|
|
|
|
if (ret)
|
|
|
|
error = true;
|
2009-08-27 23:46:53 -06:00
|
|
|
}
|
|
|
|
return error;
|
|
|
|
}
|
|
|
|
|
2013-01-20 10:18:07 -07:00
|
|
|
static int drm_fb_helper_panic(struct notifier_block *n, unsigned long ununsed,
|
2009-08-27 23:46:53 -06:00
|
|
|
void *panic_str)
|
|
|
|
{
|
2011-10-17 18:06:40 -06:00
|
|
|
/*
|
|
|
|
* It's a waste of time and effort to switch back to text console
|
|
|
|
* if the kernel should reboot before panic messages can be seen.
|
|
|
|
*/
|
|
|
|
if (panic_timeout < 0)
|
|
|
|
return 0;
|
|
|
|
|
2012-11-14 20:43:29 -07:00
|
|
|
pr_err("panic occurred, switching back to text console\n");
|
2009-08-27 23:46:53 -06:00
|
|
|
return drm_fb_helper_force_kernel_mode();
|
|
|
|
}
|
|
|
|
|
|
|
|
static struct notifier_block paniced = {
|
|
|
|
.notifier_call = drm_fb_helper_panic,
|
|
|
|
};
|
|
|
|
|
2012-12-17 04:13:23 -07:00
|
|
|
static bool drm_fb_helper_is_bound(struct drm_fb_helper *fb_helper)
|
|
|
|
{
|
|
|
|
struct drm_device *dev = fb_helper->dev;
|
|
|
|
struct drm_crtc *crtc;
|
|
|
|
int bound = 0, crtcs_bound = 0;
|
|
|
|
|
drm: do not steal the display if we have a master
Sometimes we want to disable all the screens on a system, because that
will allow the graphics card to be put into low-power states. The
problem is that, for example, while all screens are disabled, if we
get a hotplug interrupt, fbcon will decide to set a mode instead of
keeping everything disabled, which will remove us from our low power
states.
Let's assume that if there's a DRM master, it will be able to do
whatever is appropriate when we get the hotplug.
This problem can be reproduced by the runtime PM test program from
intel-gpu-tools: we disable all the screens so the graphics device can
be put into D3, then something triggers a hotplug interrupt, fbcon
sets a mode and breaks our test suite. The problem can be reproduced
more easily by the "i2c" subtest.
Other approaches considered for the problem:
- Return "false" if "bound == 0" and the caller of
drm_fb_helper_is_bound is a hotplug handler. This would break
the case where the machine boots with no outputs connected, then
the user plugs a monitor.
- Add a new IOCTL to force fbcon to not set modes. This would keep
all the current applications behaving the same, but adding a new
IOCTL is not always the greatest idea.
- Return false only if "dev->primary->master && bound == 0". This
was my first implementation, but Chris suggested we should do
the check irrespective of the "bound" variable.
Thanks to Daniel Vetter for the investigation, ideas and the
implementation of the hotplug alternative.
v2: - Do the check first, irrespective of "bound".
- Cc dri-devel
Cc: dri-devel@lists.freedesktop.org
Credits-to: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Reviewed-by: David Herrmann <dh.herrmann@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2013-11-27 13:24:08 -07:00
|
|
|
/* Sometimes user space wants everything disabled, so don't steal the
|
|
|
|
* display if there's a master. */
|
|
|
|
if (dev->primary->master)
|
|
|
|
return false;
|
|
|
|
|
2012-12-17 04:13:23 -07:00
|
|
|
list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
|
|
|
|
if (crtc->fb)
|
|
|
|
crtcs_bound++;
|
|
|
|
if (crtc->fb == fb_helper->fb)
|
|
|
|
bound++;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (bound < crtcs_bound)
|
|
|
|
return false;
|
drm: do not steal the display if we have a master
Sometimes we want to disable all the screens on a system, because that
will allow the graphics card to be put into low-power states. The
problem is that, for example, while all screens are disabled, if we
get a hotplug interrupt, fbcon will decide to set a mode instead of
keeping everything disabled, which will remove us from our low power
states.
Let's assume that if there's a DRM master, it will be able to do
whatever is appropriate when we get the hotplug.
This problem can be reproduced by the runtime PM test program from
intel-gpu-tools: we disable all the screens so the graphics device can
be put into D3, then something triggers a hotplug interrupt, fbcon
sets a mode and breaks our test suite. The problem can be reproduced
more easily by the "i2c" subtest.
Other approaches considered for the problem:
- Return "false" if "bound == 0" and the caller of
drm_fb_helper_is_bound is a hotplug handler. This would break
the case where the machine boots with no outputs connected, then
the user plugs a monitor.
- Add a new IOCTL to force fbcon to not set modes. This would keep
all the current applications behaving the same, but adding a new
IOCTL is not always the greatest idea.
- Return false only if "dev->primary->master && bound == 0". This
was my first implementation, but Chris suggested we should do
the check irrespective of the "bound" variable.
Thanks to Daniel Vetter for the investigation, ideas and the
implementation of the hotplug alternative.
v2: - Do the check first, irrespective of "bound".
- Cc dri-devel
Cc: dri-devel@lists.freedesktop.org
Credits-to: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Reviewed-by: David Herrmann <dh.herrmann@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2013-11-27 13:24:08 -07:00
|
|
|
|
2012-12-17 04:13:23 -07:00
|
|
|
return true;
|
|
|
|
}
|
|
|
|
|
2009-09-28 10:26:25 -06:00
|
|
|
#ifdef CONFIG_MAGIC_SYSRQ
|
2009-08-27 23:46:53 -06:00
|
|
|
static void drm_fb_helper_restore_work_fn(struct work_struct *ignored)
|
|
|
|
{
|
2013-01-20 10:09:52 -07:00
|
|
|
bool ret;
|
|
|
|
ret = drm_fb_helper_force_kernel_mode();
|
|
|
|
if (ret == true)
|
|
|
|
DRM_ERROR("Failed to restore crtc configuration\n");
|
2009-08-27 23:46:53 -06:00
|
|
|
}
|
|
|
|
static DECLARE_WORK(drm_fb_helper_restore_work, drm_fb_helper_restore_work_fn);
|
|
|
|
|
2010-08-17 22:15:46 -06:00
|
|
|
static void drm_fb_helper_sysrq(int dummy1)
|
2009-08-27 23:46:53 -06:00
|
|
|
{
|
|
|
|
schedule_work(&drm_fb_helper_restore_work);
|
|
|
|
}
|
|
|
|
|
|
|
|
static struct sysrq_key_op sysrq_drm_fb_helper_restore_op = {
|
|
|
|
.handler = drm_fb_helper_sysrq,
|
|
|
|
.help_msg = "force-fb(V)",
|
|
|
|
.action_msg = "Restore framebuffer console",
|
|
|
|
};
|
2010-03-25 12:29:05 -06:00
|
|
|
#else
|
|
|
|
static struct sysrq_key_op sysrq_drm_fb_helper_restore_op = { };
|
2009-09-28 10:26:25 -06:00
|
|
|
#endif
|
2009-08-27 23:46:53 -06:00
|
|
|
|
2012-02-01 03:38:24 -07:00
|
|
|
static void drm_fb_helper_dpms(struct fb_info *info, int dpms_mode)
|
2009-08-27 23:46:53 -06:00
|
|
|
{
|
|
|
|
struct drm_fb_helper *fb_helper = info->par;
|
|
|
|
struct drm_device *dev = fb_helper->dev;
|
|
|
|
struct drm_crtc *crtc;
|
2010-07-02 11:48:08 -06:00
|
|
|
struct drm_connector *connector;
|
|
|
|
int i, j;
|
2009-08-27 23:46:53 -06:00
|
|
|
|
2013-09-13 15:49:57 -06:00
|
|
|
/*
|
|
|
|
* fbdev->blank can be called from irq context in case of a panic.
|
2013-01-24 08:42:07 -07:00
|
|
|
* Since we already have our own special panic handler which will
|
|
|
|
* restore the fbdev console mode completely, just bail out early.
|
|
|
|
*/
|
|
|
|
if (oops_in_progress)
|
|
|
|
return;
|
|
|
|
|
2009-08-27 23:46:53 -06:00
|
|
|
/*
|
2012-02-01 03:38:24 -07:00
|
|
|
* For each CRTC in this fb, turn the connectors on/off.
|
2009-08-27 23:46:53 -06:00
|
|
|
*/
|
2012-12-01 16:28:11 -07:00
|
|
|
drm_modeset_lock_all(dev);
|
2012-12-17 04:13:23 -07:00
|
|
|
if (!drm_fb_helper_is_bound(fb_helper)) {
|
|
|
|
drm_modeset_unlock_all(dev);
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
2009-09-17 19:14:41 -06:00
|
|
|
for (i = 0; i < fb_helper->crtc_count; i++) {
|
2010-03-29 23:34:14 -06:00
|
|
|
crtc = fb_helper->crtc_info[i].mode_set.crtc;
|
2009-08-27 23:46:53 -06:00
|
|
|
|
2010-03-29 23:34:14 -06:00
|
|
|
if (!crtc->enabled)
|
|
|
|
continue;
|
|
|
|
|
2012-02-01 03:38:24 -07:00
|
|
|
/* Walk the connectors & encoders on this fb turning them on/off */
|
2010-07-02 11:48:08 -06:00
|
|
|
for (j = 0; j < fb_helper->connector_count; j++) {
|
|
|
|
connector = fb_helper->connector_info[j]->connector;
|
2012-09-07 02:14:52 -06:00
|
|
|
connector->funcs->dpms(connector, dpms_mode);
|
2012-10-11 19:50:56 -06:00
|
|
|
drm_object_property_set_value(&connector->base,
|
2012-02-01 03:38:24 -07:00
|
|
|
dev->mode_config.dpms_property, dpms_mode);
|
2009-08-27 23:46:53 -06:00
|
|
|
}
|
|
|
|
}
|
2012-12-01 16:28:11 -07:00
|
|
|
drm_modeset_unlock_all(dev);
|
2009-08-27 23:46:53 -06:00
|
|
|
}
|
|
|
|
|
2013-01-20 14:13:14 -07:00
|
|
|
/**
|
|
|
|
* drm_fb_helper_blank - implementation for ->fb_blank
|
|
|
|
* @blank: desired blanking state
|
|
|
|
* @info: fbdev registered by the helper
|
|
|
|
*/
|
2009-08-27 23:46:53 -06:00
|
|
|
int drm_fb_helper_blank(int blank, struct fb_info *info)
|
|
|
|
{
|
|
|
|
switch (blank) {
|
2009-10-29 14:39:07 -06:00
|
|
|
/* Display: On; HSync: On, VSync: On */
|
2009-08-27 23:46:53 -06:00
|
|
|
case FB_BLANK_UNBLANK:
|
2012-02-01 03:38:24 -07:00
|
|
|
drm_fb_helper_dpms(info, DRM_MODE_DPMS_ON);
|
2009-08-27 23:46:53 -06:00
|
|
|
break;
|
2009-10-29 14:39:07 -06:00
|
|
|
/* Display: Off; HSync: On, VSync: On */
|
2009-08-27 23:46:53 -06:00
|
|
|
case FB_BLANK_NORMAL:
|
2012-02-01 03:38:24 -07:00
|
|
|
drm_fb_helper_dpms(info, DRM_MODE_DPMS_STANDBY);
|
2009-08-27 23:46:53 -06:00
|
|
|
break;
|
2009-10-29 14:39:07 -06:00
|
|
|
/* Display: Off; HSync: Off, VSync: On */
|
2009-08-27 23:46:53 -06:00
|
|
|
case FB_BLANK_HSYNC_SUSPEND:
|
2012-02-01 03:38:24 -07:00
|
|
|
drm_fb_helper_dpms(info, DRM_MODE_DPMS_STANDBY);
|
2009-08-27 23:46:53 -06:00
|
|
|
break;
|
2009-10-29 14:39:07 -06:00
|
|
|
/* Display: Off; HSync: On, VSync: Off */
|
2009-08-27 23:46:53 -06:00
|
|
|
case FB_BLANK_VSYNC_SUSPEND:
|
2012-02-01 03:38:24 -07:00
|
|
|
drm_fb_helper_dpms(info, DRM_MODE_DPMS_SUSPEND);
|
2009-08-27 23:46:53 -06:00
|
|
|
break;
|
2009-10-29 14:39:07 -06:00
|
|
|
/* Display: Off; HSync: Off, VSync: Off */
|
2009-08-27 23:46:53 -06:00
|
|
|
case FB_BLANK_POWERDOWN:
|
2012-02-01 03:38:24 -07:00
|
|
|
drm_fb_helper_dpms(info, DRM_MODE_DPMS_OFF);
|
2009-08-27 23:46:53 -06:00
|
|
|
break;
|
|
|
|
}
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(drm_fb_helper_blank);
|
|
|
|
|
|
|
|
static void drm_fb_helper_crtc_free(struct drm_fb_helper *helper)
|
|
|
|
{
|
|
|
|
int i;
|
|
|
|
|
2010-03-29 23:34:15 -06:00
|
|
|
for (i = 0; i < helper->connector_count; i++)
|
|
|
|
kfree(helper->connector_info[i]);
|
|
|
|
kfree(helper->connector_info);
|
2012-02-01 03:38:22 -07:00
|
|
|
for (i = 0; i < helper->crtc_count; i++) {
|
2009-08-27 23:46:53 -06:00
|
|
|
kfree(helper->crtc_info[i].mode_set.connectors);
|
2012-02-01 03:38:22 -07:00
|
|
|
if (helper->crtc_info[i].mode_set.mode)
|
|
|
|
drm_mode_destroy(helper->dev, helper->crtc_info[i].mode_set.mode);
|
|
|
|
}
|
2009-08-27 23:46:53 -06:00
|
|
|
kfree(helper->crtc_info);
|
|
|
|
}
|
|
|
|
|
2013-01-20 14:13:14 -07:00
|
|
|
/**
|
|
|
|
* drm_fb_helper_init - initialize a drm_fb_helper structure
|
|
|
|
* @dev: drm device
|
|
|
|
* @fb_helper: driver-allocated fbdev helper structure to initialize
|
|
|
|
* @crtc_count: maximum number of crtcs to support in this fbdev emulation
|
|
|
|
* @max_conn_count: max connector count
|
|
|
|
*
|
|
|
|
* This allocates the structures for the fbdev helper with the given limits.
|
|
|
|
* Note that this won't yet touch the hardware (through the driver interfaces)
|
|
|
|
* nor register the fbdev. This is only done in drm_fb_helper_initial_config()
|
|
|
|
* to allow driver writes more control over the exact init sequence.
|
|
|
|
*
|
|
|
|
* Drivers must set fb_helper->funcs before calling
|
|
|
|
* drm_fb_helper_initial_config().
|
|
|
|
*
|
|
|
|
* RETURNS:
|
|
|
|
* Zero if everything went ok, nonzero otherwise.
|
|
|
|
*/
|
2010-03-29 23:34:18 -06:00
|
|
|
int drm_fb_helper_init(struct drm_device *dev,
|
|
|
|
struct drm_fb_helper *fb_helper,
|
2010-05-07 00:42:51 -06:00
|
|
|
int crtc_count, int max_conn_count)
|
2009-08-27 23:46:53 -06:00
|
|
|
{
|
|
|
|
struct drm_crtc *crtc;
|
|
|
|
int i;
|
|
|
|
|
2010-03-29 23:34:18 -06:00
|
|
|
fb_helper->dev = dev;
|
|
|
|
|
|
|
|
INIT_LIST_HEAD(&fb_helper->kernel_fb_list);
|
|
|
|
|
|
|
|
fb_helper->crtc_info = kcalloc(crtc_count, sizeof(struct drm_fb_helper_crtc), GFP_KERNEL);
|
|
|
|
if (!fb_helper->crtc_info)
|
2009-08-27 23:46:53 -06:00
|
|
|
return -ENOMEM;
|
|
|
|
|
2010-03-29 23:34:18 -06:00
|
|
|
fb_helper->crtc_count = crtc_count;
|
|
|
|
fb_helper->connector_info = kcalloc(dev->mode_config.num_connector, sizeof(struct drm_fb_helper_connector *), GFP_KERNEL);
|
|
|
|
if (!fb_helper->connector_info) {
|
|
|
|
kfree(fb_helper->crtc_info);
|
2010-03-29 23:34:15 -06:00
|
|
|
return -ENOMEM;
|
|
|
|
}
|
2010-03-29 23:34:18 -06:00
|
|
|
fb_helper->connector_count = 0;
|
2009-08-27 23:46:53 -06:00
|
|
|
|
|
|
|
for (i = 0; i < crtc_count; i++) {
|
2010-03-29 23:34:18 -06:00
|
|
|
fb_helper->crtc_info[i].mode_set.connectors =
|
2009-08-27 23:46:53 -06:00
|
|
|
kcalloc(max_conn_count,
|
|
|
|
sizeof(struct drm_connector *),
|
|
|
|
GFP_KERNEL);
|
|
|
|
|
2012-05-17 05:27:21 -06:00
|
|
|
if (!fb_helper->crtc_info[i].mode_set.connectors)
|
2009-08-27 23:46:53 -06:00
|
|
|
goto out_free;
|
2010-03-29 23:34:18 -06:00
|
|
|
fb_helper->crtc_info[i].mode_set.num_connectors = 0;
|
2009-08-27 23:46:53 -06:00
|
|
|
}
|
|
|
|
|
|
|
|
i = 0;
|
|
|
|
list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
|
2010-03-29 23:34:18 -06:00
|
|
|
fb_helper->crtc_info[i].mode_set.crtc = crtc;
|
2009-08-27 23:46:53 -06:00
|
|
|
i++;
|
|
|
|
}
|
2012-02-01 03:38:25 -07:00
|
|
|
|
2009-08-27 23:46:53 -06:00
|
|
|
return 0;
|
|
|
|
out_free:
|
2010-03-29 23:34:18 -06:00
|
|
|
drm_fb_helper_crtc_free(fb_helper);
|
2009-08-27 23:46:53 -06:00
|
|
|
return -ENOMEM;
|
|
|
|
}
|
2010-03-29 23:34:18 -06:00
|
|
|
EXPORT_SYMBOL(drm_fb_helper_init);
|
|
|
|
|
|
|
|
void drm_fb_helper_fini(struct drm_fb_helper *fb_helper)
|
|
|
|
{
|
|
|
|
if (!list_empty(&fb_helper->kernel_fb_list)) {
|
|
|
|
list_del(&fb_helper->kernel_fb_list);
|
|
|
|
if (list_empty(&kernel_fb_helper_list)) {
|
2012-11-14 20:43:29 -07:00
|
|
|
pr_info("drm: unregistered panic notifier\n");
|
2010-03-29 23:34:18 -06:00
|
|
|
atomic_notifier_chain_unregister(&panic_notifier_list,
|
|
|
|
&paniced);
|
|
|
|
unregister_sysrq_key('v', &sysrq_drm_fb_helper_restore_op);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
drm_fb_helper_crtc_free(fb_helper);
|
|
|
|
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(drm_fb_helper_fini);
|
2009-08-27 23:46:53 -06:00
|
|
|
|
2009-10-23 02:49:03 -06:00
|
|
|
static int setcolreg(struct drm_crtc *crtc, u16 red, u16 green,
|
2009-10-05 21:54:01 -06:00
|
|
|
u16 blue, u16 regno, struct fb_info *info)
|
|
|
|
{
|
|
|
|
struct drm_fb_helper *fb_helper = info->par;
|
|
|
|
struct drm_framebuffer *fb = fb_helper->fb;
|
|
|
|
int pindex;
|
|
|
|
|
2009-10-23 02:49:03 -06:00
|
|
|
if (info->fix.visual == FB_VISUAL_TRUECOLOR) {
|
|
|
|
u32 *palette;
|
|
|
|
u32 value;
|
|
|
|
/* place color in psuedopalette */
|
|
|
|
if (regno > 16)
|
|
|
|
return -EINVAL;
|
|
|
|
palette = (u32 *)info->pseudo_palette;
|
|
|
|
red >>= (16 - info->var.red.length);
|
|
|
|
green >>= (16 - info->var.green.length);
|
|
|
|
blue >>= (16 - info->var.blue.length);
|
|
|
|
value = (red << info->var.red.offset) |
|
|
|
|
(green << info->var.green.offset) |
|
|
|
|
(blue << info->var.blue.offset);
|
2011-02-15 19:45:51 -07:00
|
|
|
if (info->var.transp.length > 0) {
|
|
|
|
u32 mask = (1 << info->var.transp.length) - 1;
|
|
|
|
mask <<= info->var.transp.offset;
|
|
|
|
value |= mask;
|
|
|
|
}
|
2009-10-23 02:49:03 -06:00
|
|
|
palette[regno] = value;
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2013-05-27 11:19:57 -06:00
|
|
|
/*
|
|
|
|
* The driver really shouldn't advertise pseudo/directcolor
|
|
|
|
* visuals if it can't deal with the palette.
|
|
|
|
*/
|
|
|
|
if (WARN_ON(!fb_helper->funcs->gamma_set ||
|
|
|
|
!fb_helper->funcs->gamma_get))
|
|
|
|
return -EINVAL;
|
|
|
|
|
2009-10-05 21:54:01 -06:00
|
|
|
pindex = regno;
|
|
|
|
|
|
|
|
if (fb->bits_per_pixel == 16) {
|
|
|
|
pindex = regno << 3;
|
|
|
|
|
|
|
|
if (fb->depth == 16 && regno > 63)
|
2009-10-23 02:49:03 -06:00
|
|
|
return -EINVAL;
|
2009-10-05 21:54:01 -06:00
|
|
|
if (fb->depth == 15 && regno > 31)
|
2009-10-23 02:49:03 -06:00
|
|
|
return -EINVAL;
|
2009-10-05 21:54:01 -06:00
|
|
|
|
|
|
|
if (fb->depth == 16) {
|
|
|
|
u16 r, g, b;
|
|
|
|
int i;
|
|
|
|
if (regno < 32) {
|
|
|
|
for (i = 0; i < 8; i++)
|
|
|
|
fb_helper->funcs->gamma_set(crtc, red,
|
|
|
|
green, blue, pindex + i);
|
|
|
|
}
|
|
|
|
|
|
|
|
fb_helper->funcs->gamma_get(crtc, &r,
|
|
|
|
&g, &b,
|
|
|
|
pindex >> 1);
|
|
|
|
|
|
|
|
for (i = 0; i < 4; i++)
|
|
|
|
fb_helper->funcs->gamma_set(crtc, r,
|
|
|
|
green, b,
|
|
|
|
(pindex >> 1) + i);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
if (fb->depth != 16)
|
|
|
|
fb_helper->funcs->gamma_set(crtc, red, green, blue, pindex);
|
2009-10-23 02:49:03 -06:00
|
|
|
return 0;
|
2009-10-05 21:54:01 -06:00
|
|
|
}
|
|
|
|
|
2013-01-20 14:13:14 -07:00
|
|
|
/**
|
|
|
|
* drm_fb_helper_setcmap - implementation for ->fb_setcmap
|
|
|
|
* @cmap: cmap to set
|
|
|
|
* @info: fbdev registered by the helper
|
|
|
|
*/
|
2009-10-04 17:58:02 -06:00
|
|
|
int drm_fb_helper_setcmap(struct fb_cmap *cmap, struct fb_info *info)
|
|
|
|
{
|
|
|
|
struct drm_fb_helper *fb_helper = info->par;
|
2013-05-27 11:19:56 -06:00
|
|
|
struct drm_device *dev = fb_helper->dev;
|
2010-03-29 23:34:14 -06:00
|
|
|
struct drm_crtc_helper_funcs *crtc_funcs;
|
2009-10-04 17:58:02 -06:00
|
|
|
u16 *red, *green, *blue, *transp;
|
|
|
|
struct drm_crtc *crtc;
|
2011-03-07 10:00:34 -07:00
|
|
|
int i, j, rc = 0;
|
2009-10-04 17:58:02 -06:00
|
|
|
int start;
|
|
|
|
|
2013-05-27 11:19:56 -06:00
|
|
|
drm_modeset_lock_all(dev);
|
|
|
|
if (!drm_fb_helper_is_bound(fb_helper)) {
|
|
|
|
drm_modeset_unlock_all(dev);
|
|
|
|
return -EBUSY;
|
|
|
|
}
|
|
|
|
|
2010-03-29 23:34:14 -06:00
|
|
|
for (i = 0; i < fb_helper->crtc_count; i++) {
|
|
|
|
crtc = fb_helper->crtc_info[i].mode_set.crtc;
|
|
|
|
crtc_funcs = crtc->helper_private;
|
2009-10-04 17:58:02 -06:00
|
|
|
|
|
|
|
red = cmap->red;
|
|
|
|
green = cmap->green;
|
|
|
|
blue = cmap->blue;
|
|
|
|
transp = cmap->transp;
|
|
|
|
start = cmap->start;
|
|
|
|
|
2011-03-07 10:00:34 -07:00
|
|
|
for (j = 0; j < cmap->len; j++) {
|
2009-10-04 17:58:02 -06:00
|
|
|
u16 hred, hgreen, hblue, htransp = 0xffff;
|
|
|
|
|
|
|
|
hred = *red++;
|
|
|
|
hgreen = *green++;
|
|
|
|
hblue = *blue++;
|
|
|
|
|
|
|
|
if (transp)
|
|
|
|
htransp = *transp++;
|
|
|
|
|
2009-10-23 02:49:03 -06:00
|
|
|
rc = setcolreg(crtc, hred, hgreen, hblue, start++, info);
|
|
|
|
if (rc)
|
2013-05-27 11:19:56 -06:00
|
|
|
goto out;
|
2009-10-04 17:58:02 -06:00
|
|
|
}
|
2013-05-27 11:19:57 -06:00
|
|
|
if (crtc_funcs->load_lut)
|
|
|
|
crtc_funcs->load_lut(crtc);
|
2009-10-04 17:58:02 -06:00
|
|
|
}
|
2013-05-27 11:19:56 -06:00
|
|
|
out:
|
|
|
|
drm_modeset_unlock_all(dev);
|
2009-10-04 17:58:02 -06:00
|
|
|
return rc;
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(drm_fb_helper_setcmap);
|
|
|
|
|
2013-01-20 14:13:14 -07:00
|
|
|
/**
|
|
|
|
* drm_fb_helper_check_var - implementation for ->fb_check_var
|
|
|
|
* @var: screeninfo to check
|
|
|
|
* @info: fbdev registered by the helper
|
|
|
|
*/
|
2009-08-27 23:46:53 -06:00
|
|
|
int drm_fb_helper_check_var(struct fb_var_screeninfo *var,
|
|
|
|
struct fb_info *info)
|
|
|
|
{
|
|
|
|
struct drm_fb_helper *fb_helper = info->par;
|
|
|
|
struct drm_framebuffer *fb = fb_helper->fb;
|
|
|
|
int depth;
|
|
|
|
|
2010-08-05 08:22:32 -06:00
|
|
|
if (var->pixclock != 0 || in_dbg_master())
|
2009-08-27 23:46:53 -06:00
|
|
|
return -EINVAL;
|
|
|
|
|
|
|
|
/* Need to resize the fb object !!! */
|
2012-03-26 14:15:53 -06:00
|
|
|
if (var->bits_per_pixel > fb->bits_per_pixel ||
|
|
|
|
var->xres > fb->width || var->yres > fb->height ||
|
|
|
|
var->xres_virtual > fb->width || var->yres_virtual > fb->height) {
|
2010-01-07 16:27:08 -07:00
|
|
|
DRM_DEBUG("fb userspace requested width/height/bpp is greater than current fb "
|
2012-03-26 14:15:53 -06:00
|
|
|
"request %dx%d-%d (virtual %dx%d) > %dx%d-%d\n",
|
|
|
|
var->xres, var->yres, var->bits_per_pixel,
|
|
|
|
var->xres_virtual, var->yres_virtual,
|
2010-01-07 16:27:08 -07:00
|
|
|
fb->width, fb->height, fb->bits_per_pixel);
|
2009-08-27 23:46:53 -06:00
|
|
|
return -EINVAL;
|
|
|
|
}
|
|
|
|
|
|
|
|
switch (var->bits_per_pixel) {
|
|
|
|
case 16:
|
|
|
|
depth = (var->green.length == 6) ? 16 : 15;
|
|
|
|
break;
|
|
|
|
case 32:
|
|
|
|
depth = (var->transp.length > 0) ? 32 : 24;
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
depth = var->bits_per_pixel;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
switch (depth) {
|
|
|
|
case 8:
|
|
|
|
var->red.offset = 0;
|
|
|
|
var->green.offset = 0;
|
|
|
|
var->blue.offset = 0;
|
|
|
|
var->red.length = 8;
|
|
|
|
var->green.length = 8;
|
|
|
|
var->blue.length = 8;
|
|
|
|
var->transp.length = 0;
|
|
|
|
var->transp.offset = 0;
|
|
|
|
break;
|
|
|
|
case 15:
|
|
|
|
var->red.offset = 10;
|
|
|
|
var->green.offset = 5;
|
|
|
|
var->blue.offset = 0;
|
|
|
|
var->red.length = 5;
|
|
|
|
var->green.length = 5;
|
|
|
|
var->blue.length = 5;
|
|
|
|
var->transp.length = 1;
|
|
|
|
var->transp.offset = 15;
|
|
|
|
break;
|
|
|
|
case 16:
|
|
|
|
var->red.offset = 11;
|
|
|
|
var->green.offset = 5;
|
|
|
|
var->blue.offset = 0;
|
|
|
|
var->red.length = 5;
|
|
|
|
var->green.length = 6;
|
|
|
|
var->blue.length = 5;
|
|
|
|
var->transp.length = 0;
|
|
|
|
var->transp.offset = 0;
|
|
|
|
break;
|
|
|
|
case 24:
|
|
|
|
var->red.offset = 16;
|
|
|
|
var->green.offset = 8;
|
|
|
|
var->blue.offset = 0;
|
|
|
|
var->red.length = 8;
|
|
|
|
var->green.length = 8;
|
|
|
|
var->blue.length = 8;
|
|
|
|
var->transp.length = 0;
|
|
|
|
var->transp.offset = 0;
|
|
|
|
break;
|
|
|
|
case 32:
|
|
|
|
var->red.offset = 16;
|
|
|
|
var->green.offset = 8;
|
|
|
|
var->blue.offset = 0;
|
|
|
|
var->red.length = 8;
|
|
|
|
var->green.length = 8;
|
|
|
|
var->blue.length = 8;
|
|
|
|
var->transp.length = 8;
|
|
|
|
var->transp.offset = 24;
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
return -EINVAL;
|
|
|
|
}
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(drm_fb_helper_check_var);
|
|
|
|
|
2013-01-20 14:13:14 -07:00
|
|
|
/**
|
|
|
|
* drm_fb_helper_set_par - implementation for ->fb_set_par
|
|
|
|
* @info: fbdev registered by the helper
|
|
|
|
*
|
|
|
|
* This will let fbcon do the mode init and is called at initialization time by
|
|
|
|
* the fbdev core when registering the driver, and later on through the hotplug
|
|
|
|
* callback.
|
|
|
|
*/
|
2009-08-27 23:46:53 -06:00
|
|
|
int drm_fb_helper_set_par(struct fb_info *info)
|
|
|
|
{
|
|
|
|
struct drm_fb_helper *fb_helper = info->par;
|
|
|
|
struct drm_device *dev = fb_helper->dev;
|
|
|
|
struct fb_var_screeninfo *var = &info->var;
|
|
|
|
int ret;
|
|
|
|
int i;
|
|
|
|
|
2009-11-04 01:42:52 -07:00
|
|
|
if (var->pixclock != 0) {
|
2010-02-10 21:31:32 -07:00
|
|
|
DRM_ERROR("PIXEL CLOCK SET\n");
|
2009-08-27 23:46:53 -06:00
|
|
|
return -EINVAL;
|
|
|
|
}
|
|
|
|
|
2012-12-01 16:28:11 -07:00
|
|
|
drm_modeset_lock_all(dev);
|
2010-03-29 23:34:14 -06:00
|
|
|
for (i = 0; i < fb_helper->crtc_count; i++) {
|
2012-12-11 05:47:23 -07:00
|
|
|
ret = drm_mode_set_config_internal(&fb_helper->crtc_info[i].mode_set);
|
2010-03-29 23:34:15 -06:00
|
|
|
if (ret) {
|
2012-12-01 16:28:11 -07:00
|
|
|
drm_modeset_unlock_all(dev);
|
2010-03-29 23:34:15 -06:00
|
|
|
return ret;
|
2009-08-27 23:46:53 -06:00
|
|
|
}
|
|
|
|
}
|
2012-12-01 16:28:11 -07:00
|
|
|
drm_modeset_unlock_all(dev);
|
2010-03-29 23:34:18 -06:00
|
|
|
|
|
|
|
if (fb_helper->delayed_hotplug) {
|
|
|
|
fb_helper->delayed_hotplug = false;
|
2010-05-07 00:42:51 -06:00
|
|
|
drm_fb_helper_hotplug_event(fb_helper);
|
2010-03-29 23:34:18 -06:00
|
|
|
}
|
2009-08-27 23:46:53 -06:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(drm_fb_helper_set_par);
|
|
|
|
|
2013-01-20 14:13:14 -07:00
|
|
|
/**
|
|
|
|
* drm_fb_helper_pan_display - implementation for ->fb_pan_display
|
|
|
|
* @var: updated screen information
|
|
|
|
* @info: fbdev registered by the helper
|
|
|
|
*/
|
2009-08-27 23:46:53 -06:00
|
|
|
int drm_fb_helper_pan_display(struct fb_var_screeninfo *var,
|
|
|
|
struct fb_info *info)
|
|
|
|
{
|
|
|
|
struct drm_fb_helper *fb_helper = info->par;
|
|
|
|
struct drm_device *dev = fb_helper->dev;
|
|
|
|
struct drm_mode_set *modeset;
|
|
|
|
int ret = 0;
|
|
|
|
int i;
|
|
|
|
|
2012-12-01 16:28:11 -07:00
|
|
|
drm_modeset_lock_all(dev);
|
2012-12-17 04:13:23 -07:00
|
|
|
if (!drm_fb_helper_is_bound(fb_helper)) {
|
|
|
|
drm_modeset_unlock_all(dev);
|
|
|
|
return -EBUSY;
|
|
|
|
}
|
|
|
|
|
2010-03-29 23:34:14 -06:00
|
|
|
for (i = 0; i < fb_helper->crtc_count; i++) {
|
2009-08-27 23:46:53 -06:00
|
|
|
modeset = &fb_helper->crtc_info[i].mode_set;
|
|
|
|
|
|
|
|
modeset->x = var->xoffset;
|
|
|
|
modeset->y = var->yoffset;
|
|
|
|
|
|
|
|
if (modeset->num_connectors) {
|
2012-12-11 05:47:23 -07:00
|
|
|
ret = drm_mode_set_config_internal(modeset);
|
2009-08-27 23:46:53 -06:00
|
|
|
if (!ret) {
|
|
|
|
info->var.xoffset = var->xoffset;
|
|
|
|
info->var.yoffset = var->yoffset;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
2012-12-01 16:28:11 -07:00
|
|
|
drm_modeset_unlock_all(dev);
|
2009-08-27 23:46:53 -06:00
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(drm_fb_helper_pan_display);
|
|
|
|
|
2013-01-21 15:38:37 -07:00
|
|
|
/*
|
2013-01-20 14:13:14 -07:00
|
|
|
* Allocates the backing storage and sets up the fbdev info structure through
|
|
|
|
* the ->fb_probe callback and then registers the fbdev and sets up the panic
|
|
|
|
* notifier.
|
2013-01-21 15:38:37 -07:00
|
|
|
*/
|
2013-01-20 13:50:49 -07:00
|
|
|
static int drm_fb_helper_single_fb_probe(struct drm_fb_helper *fb_helper,
|
|
|
|
int preferred_bpp)
|
2009-08-27 23:46:53 -06:00
|
|
|
{
|
2013-01-21 15:38:37 -07:00
|
|
|
int ret = 0;
|
2009-08-27 23:46:53 -06:00
|
|
|
int crtc_count = 0;
|
2010-03-29 23:34:18 -06:00
|
|
|
int i;
|
2009-08-27 23:46:53 -06:00
|
|
|
struct fb_info *info;
|
2010-03-29 23:34:13 -06:00
|
|
|
struct drm_fb_helper_surface_size sizes;
|
2010-03-29 23:34:14 -06:00
|
|
|
int gamma_size = 0;
|
2010-03-29 23:34:13 -06:00
|
|
|
|
|
|
|
memset(&sizes, 0, sizeof(struct drm_fb_helper_surface_size));
|
|
|
|
sizes.surface_depth = 24;
|
|
|
|
sizes.surface_bpp = 32;
|
|
|
|
sizes.fb_width = (unsigned)-1;
|
|
|
|
sizes.fb_height = (unsigned)-1;
|
2009-08-27 23:46:53 -06:00
|
|
|
|
2009-10-05 21:54:01 -06:00
|
|
|
/* if driver picks 8 or 16 by default use that
|
|
|
|
for both depth/bpp */
|
2012-11-14 20:43:30 -07:00
|
|
|
if (preferred_bpp != sizes.surface_bpp)
|
2010-03-29 23:34:13 -06:00
|
|
|
sizes.surface_depth = sizes.surface_bpp = preferred_bpp;
|
2012-11-14 20:43:30 -07:00
|
|
|
|
2009-08-27 23:46:53 -06:00
|
|
|
/* first up get a count of crtcs now in use and new min/maxes width/heights */
|
2010-03-29 23:34:15 -06:00
|
|
|
for (i = 0; i < fb_helper->connector_count; i++) {
|
|
|
|
struct drm_fb_helper_connector *fb_helper_conn = fb_helper->connector_info[i];
|
2011-04-17 00:43:32 -06:00
|
|
|
struct drm_cmdline_mode *cmdline_mode;
|
2009-09-25 14:39:00 -06:00
|
|
|
|
2010-03-29 23:34:15 -06:00
|
|
|
cmdline_mode = &fb_helper_conn->cmdline_mode;
|
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 (cmdline_mode->bpp_specified) {
|
|
|
|
switch (cmdline_mode->bpp) {
|
|
|
|
case 8:
|
2010-03-29 23:34:13 -06:00
|
|
|
sizes.surface_depth = sizes.surface_bpp = 8;
|
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
|
|
|
break;
|
|
|
|
case 15:
|
2010-03-29 23:34:13 -06:00
|
|
|
sizes.surface_depth = 15;
|
|
|
|
sizes.surface_bpp = 16;
|
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
|
|
|
break;
|
|
|
|
case 16:
|
2010-03-29 23:34:13 -06:00
|
|
|
sizes.surface_depth = sizes.surface_bpp = 16;
|
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
|
|
|
break;
|
|
|
|
case 24:
|
2010-03-29 23:34:13 -06:00
|
|
|
sizes.surface_depth = sizes.surface_bpp = 24;
|
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
|
|
|
break;
|
|
|
|
case 32:
|
2010-03-29 23:34:13 -06:00
|
|
|
sizes.surface_depth = 24;
|
|
|
|
sizes.surface_bpp = 32;
|
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
|
|
|
break;
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2010-03-29 23:34:14 -06:00
|
|
|
crtc_count = 0;
|
|
|
|
for (i = 0; i < fb_helper->crtc_count; i++) {
|
|
|
|
struct drm_display_mode *desired_mode;
|
|
|
|
desired_mode = fb_helper->crtc_info[i].desired_mode;
|
|
|
|
|
|
|
|
if (desired_mode) {
|
|
|
|
if (gamma_size == 0)
|
|
|
|
gamma_size = fb_helper->crtc_info[i].mode_set.crtc->gamma_size;
|
|
|
|
if (desired_mode->hdisplay < sizes.fb_width)
|
|
|
|
sizes.fb_width = desired_mode->hdisplay;
|
|
|
|
if (desired_mode->vdisplay < sizes.fb_height)
|
|
|
|
sizes.fb_height = desired_mode->vdisplay;
|
|
|
|
if (desired_mode->hdisplay > sizes.surface_width)
|
|
|
|
sizes.surface_width = desired_mode->hdisplay;
|
|
|
|
if (desired_mode->vdisplay > sizes.surface_height)
|
|
|
|
sizes.surface_height = desired_mode->vdisplay;
|
2009-08-27 23:46:53 -06:00
|
|
|
crtc_count++;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2010-03-29 23:34:13 -06:00
|
|
|
if (crtc_count == 0 || sizes.fb_width == -1 || sizes.fb_height == -1) {
|
2009-08-27 23:46:53 -06:00
|
|
|
/* hmm everyone went away - assume VGA cable just fell out
|
|
|
|
and will come back later. */
|
2010-05-07 00:42:51 -06:00
|
|
|
DRM_INFO("Cannot find any crtc or sizes - going 1024x768\n");
|
2010-03-29 23:34:16 -06:00
|
|
|
sizes.fb_width = sizes.surface_width = 1024;
|
|
|
|
sizes.fb_height = sizes.surface_height = 768;
|
2009-08-27 23:46:53 -06:00
|
|
|
}
|
|
|
|
|
2010-03-29 23:34:13 -06:00
|
|
|
/* push down into drivers */
|
2013-01-21 15:38:37 -07:00
|
|
|
ret = (*fb_helper->funcs->fb_probe)(fb_helper, &sizes);
|
|
|
|
if (ret < 0)
|
|
|
|
return ret;
|
2009-08-27 23:46:53 -06:00
|
|
|
|
2010-03-29 23:34:13 -06:00
|
|
|
info = fb_helper->fbdev;
|
2009-08-27 23:46:53 -06:00
|
|
|
|
2013-01-21 02:52:17 -07:00
|
|
|
/*
|
|
|
|
* Set the fb pointer - usually drm_setup_crtcs does this for hotplug
|
|
|
|
* events, but at init time drm_setup_crtcs needs to be called before
|
|
|
|
* the fb is allocated (since we need to figure out the desired size of
|
|
|
|
* the fb before we can allocate it ...). Hence we need to fix things up
|
|
|
|
* here again.
|
|
|
|
*/
|
2012-11-14 20:43:30 -07:00
|
|
|
for (i = 0; i < fb_helper->crtc_count; i++)
|
2013-01-21 02:52:17 -07:00
|
|
|
if (fb_helper->crtc_info[i].mode_set.num_connectors)
|
|
|
|
fb_helper->crtc_info[i].mode_set.fb = fb_helper->fb;
|
|
|
|
|
2009-08-27 23:46:53 -06:00
|
|
|
|
2013-01-21 15:38:37 -07:00
|
|
|
info->var.pixclock = 0;
|
|
|
|
if (register_framebuffer(info) < 0)
|
|
|
|
return -EINVAL;
|
2010-03-29 23:34:13 -06:00
|
|
|
|
2013-01-21 15:38:37 -07:00
|
|
|
dev_info(fb_helper->dev->dev, "fb%d: %s frame buffer device\n",
|
|
|
|
info->node, info->fix.id);
|
2009-08-27 23:46:53 -06:00
|
|
|
|
|
|
|
/* Switch back to kernel console on panic */
|
|
|
|
/* multi card linked list maybe */
|
|
|
|
if (list_empty(&kernel_fb_helper_list)) {
|
2012-11-14 20:43:29 -07:00
|
|
|
dev_info(fb_helper->dev->dev, "registered panic notifier\n");
|
2009-08-27 23:46:53 -06:00
|
|
|
atomic_notifier_chain_register(&panic_notifier_list,
|
|
|
|
&paniced);
|
|
|
|
register_sysrq_key('v', &sysrq_drm_fb_helper_restore_op);
|
|
|
|
}
|
2013-01-21 15:38:37 -07:00
|
|
|
|
|
|
|
list_add(&fb_helper->kernel_fb_list, &kernel_fb_helper_list);
|
2010-03-29 23:34:13 -06:00
|
|
|
|
2009-08-27 23:46:53 -06:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2013-01-20 14:13:14 -07:00
|
|
|
/**
|
|
|
|
* drm_fb_helper_fill_fix - initializes fixed fbdev information
|
|
|
|
* @info: fbdev registered by the helper
|
|
|
|
* @pitch: desired pitch
|
|
|
|
* @depth: desired depth
|
|
|
|
*
|
|
|
|
* Helper to fill in the fixed fbdev information useful for a non-accelerated
|
|
|
|
* fbdev emulations. Drivers which support acceleration methods which impose
|
|
|
|
* additional constraints need to set up their own limits.
|
|
|
|
*
|
|
|
|
* Drivers should call this (or their equivalent setup code) from their
|
|
|
|
* ->fb_probe callback.
|
|
|
|
*/
|
2011-01-14 16:27:00 -07:00
|
|
|
void drm_fb_helper_fill_fix(struct fb_info *info, uint32_t pitch,
|
|
|
|
uint32_t depth)
|
|
|
|
{
|
|
|
|
info->fix.type = FB_TYPE_PACKED_PIXELS;
|
|
|
|
info->fix.visual = depth == 8 ? FB_VISUAL_PSEUDOCOLOR :
|
|
|
|
FB_VISUAL_TRUECOLOR;
|
|
|
|
info->fix.mmio_start = 0;
|
|
|
|
info->fix.mmio_len = 0;
|
|
|
|
info->fix.type_aux = 0;
|
|
|
|
info->fix.xpanstep = 1; /* doing it in hw */
|
|
|
|
info->fix.ypanstep = 1; /* doing it in hw */
|
|
|
|
info->fix.ywrapstep = 0;
|
|
|
|
info->fix.accel = FB_ACCEL_NONE;
|
|
|
|
info->fix.type_aux = 0;
|
|
|
|
|
|
|
|
info->fix.line_length = pitch;
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(drm_fb_helper_fill_fix);
|
|
|
|
|
2013-01-20 14:13:14 -07:00
|
|
|
/**
|
|
|
|
* drm_fb_helper_fill_var - initalizes variable fbdev information
|
|
|
|
* @info: fbdev instance to set up
|
|
|
|
* @fb_helper: fb helper instance to use as template
|
|
|
|
* @fb_width: desired fb width
|
|
|
|
* @fb_height: desired fb height
|
|
|
|
*
|
|
|
|
* Sets up the variable fbdev metainformation from the given fb helper instance
|
|
|
|
* and the drm framebuffer allocated in fb_helper->fb.
|
|
|
|
*
|
|
|
|
* Drivers should call this (or their equivalent setup code) from their
|
|
|
|
* ->fb_probe callback after having allocated the fbdev backing
|
|
|
|
* storage framebuffer.
|
|
|
|
*/
|
2010-03-29 23:34:13 -06:00
|
|
|
void drm_fb_helper_fill_var(struct fb_info *info, struct drm_fb_helper *fb_helper,
|
2009-08-27 23:46:53 -06:00
|
|
|
uint32_t fb_width, uint32_t fb_height)
|
|
|
|
{
|
2010-03-29 23:34:13 -06:00
|
|
|
struct drm_framebuffer *fb = fb_helper->fb;
|
|
|
|
info->pseudo_palette = fb_helper->pseudo_palette;
|
2009-08-27 23:46:53 -06:00
|
|
|
info->var.xres_virtual = fb->width;
|
|
|
|
info->var.yres_virtual = fb->height;
|
|
|
|
info->var.bits_per_pixel = fb->bits_per_pixel;
|
2010-12-20 12:10:39 -07:00
|
|
|
info->var.accel_flags = FB_ACCELF_TEXT;
|
2009-08-27 23:46:53 -06:00
|
|
|
info->var.xoffset = 0;
|
|
|
|
info->var.yoffset = 0;
|
|
|
|
info->var.activate = FB_ACTIVATE_NOW;
|
|
|
|
info->var.height = -1;
|
|
|
|
info->var.width = -1;
|
|
|
|
|
|
|
|
switch (fb->depth) {
|
|
|
|
case 8:
|
|
|
|
info->var.red.offset = 0;
|
|
|
|
info->var.green.offset = 0;
|
|
|
|
info->var.blue.offset = 0;
|
|
|
|
info->var.red.length = 8; /* 8bit DAC */
|
|
|
|
info->var.green.length = 8;
|
|
|
|
info->var.blue.length = 8;
|
|
|
|
info->var.transp.offset = 0;
|
|
|
|
info->var.transp.length = 0;
|
|
|
|
break;
|
|
|
|
case 15:
|
|
|
|
info->var.red.offset = 10;
|
|
|
|
info->var.green.offset = 5;
|
|
|
|
info->var.blue.offset = 0;
|
|
|
|
info->var.red.length = 5;
|
|
|
|
info->var.green.length = 5;
|
|
|
|
info->var.blue.length = 5;
|
|
|
|
info->var.transp.offset = 15;
|
|
|
|
info->var.transp.length = 1;
|
|
|
|
break;
|
|
|
|
case 16:
|
|
|
|
info->var.red.offset = 11;
|
|
|
|
info->var.green.offset = 5;
|
|
|
|
info->var.blue.offset = 0;
|
|
|
|
info->var.red.length = 5;
|
|
|
|
info->var.green.length = 6;
|
|
|
|
info->var.blue.length = 5;
|
|
|
|
info->var.transp.offset = 0;
|
|
|
|
break;
|
|
|
|
case 24:
|
|
|
|
info->var.red.offset = 16;
|
|
|
|
info->var.green.offset = 8;
|
|
|
|
info->var.blue.offset = 0;
|
|
|
|
info->var.red.length = 8;
|
|
|
|
info->var.green.length = 8;
|
|
|
|
info->var.blue.length = 8;
|
|
|
|
info->var.transp.offset = 0;
|
|
|
|
info->var.transp.length = 0;
|
|
|
|
break;
|
|
|
|
case 32:
|
|
|
|
info->var.red.offset = 16;
|
|
|
|
info->var.green.offset = 8;
|
|
|
|
info->var.blue.offset = 0;
|
|
|
|
info->var.red.length = 8;
|
|
|
|
info->var.green.length = 8;
|
|
|
|
info->var.blue.length = 8;
|
|
|
|
info->var.transp.offset = 24;
|
|
|
|
info->var.transp.length = 8;
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
info->var.xres = fb_width;
|
|
|
|
info->var.yres = fb_height;
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(drm_fb_helper_fill_var);
|
2010-03-29 23:34:13 -06:00
|
|
|
|
2010-03-29 23:34:15 -06:00
|
|
|
static int drm_fb_helper_probe_connector_modes(struct drm_fb_helper *fb_helper,
|
|
|
|
uint32_t maxX,
|
|
|
|
uint32_t maxY)
|
2010-03-29 23:34:13 -06:00
|
|
|
{
|
|
|
|
struct drm_connector *connector;
|
|
|
|
int count = 0;
|
2010-03-29 23:34:15 -06:00
|
|
|
int i;
|
2010-03-29 23:34:13 -06:00
|
|
|
|
2010-03-29 23:34:15 -06:00
|
|
|
for (i = 0; i < fb_helper->connector_count; i++) {
|
|
|
|
connector = fb_helper->connector_info[i]->connector;
|
2010-03-29 23:34:13 -06:00
|
|
|
count += connector->funcs->fill_modes(connector, maxX, maxY);
|
|
|
|
}
|
|
|
|
|
|
|
|
return count;
|
|
|
|
}
|
|
|
|
|
2014-02-12 13:26:24 -07:00
|
|
|
struct drm_display_mode *drm_has_preferred_mode(struct drm_fb_helper_connector *fb_connector, int width, int height)
|
2010-03-29 23:34:13 -06:00
|
|
|
{
|
|
|
|
struct drm_display_mode *mode;
|
|
|
|
|
2010-03-29 23:34:15 -06:00
|
|
|
list_for_each_entry(mode, &fb_connector->connector->modes, head) {
|
2010-03-29 23:34:13 -06:00
|
|
|
if (drm_mode_width(mode) > width ||
|
|
|
|
drm_mode_height(mode) > height)
|
|
|
|
continue;
|
|
|
|
if (mode->type & DRM_MODE_TYPE_PREFERRED)
|
|
|
|
return mode;
|
|
|
|
}
|
|
|
|
return NULL;
|
|
|
|
}
|
2014-02-12 13:26:24 -07:00
|
|
|
EXPORT_SYMBOL(drm_has_preferred_mode);
|
2010-03-29 23:34:13 -06:00
|
|
|
|
2010-03-29 23:34:15 -06:00
|
|
|
static bool drm_has_cmdline_mode(struct drm_fb_helper_connector *fb_connector)
|
2010-03-29 23:34:13 -06:00
|
|
|
{
|
2011-04-17 00:43:32 -06:00
|
|
|
struct drm_cmdline_mode *cmdline_mode;
|
2010-03-29 23:34:15 -06:00
|
|
|
cmdline_mode = &fb_connector->cmdline_mode;
|
2010-03-29 23:34:13 -06:00
|
|
|
return cmdline_mode->specified;
|
|
|
|
}
|
|
|
|
|
2014-02-12 13:26:24 -07:00
|
|
|
struct drm_display_mode *drm_pick_cmdline_mode(struct drm_fb_helper_connector *fb_helper_conn,
|
2010-03-29 23:34:15 -06:00
|
|
|
int width, int height)
|
2010-03-29 23:34:13 -06:00
|
|
|
{
|
2011-04-17 00:43:32 -06:00
|
|
|
struct drm_cmdline_mode *cmdline_mode;
|
2010-03-29 23:34:13 -06:00
|
|
|
struct drm_display_mode *mode = NULL;
|
|
|
|
|
2010-03-29 23:34:15 -06:00
|
|
|
cmdline_mode = &fb_helper_conn->cmdline_mode;
|
2010-03-29 23:34:13 -06:00
|
|
|
if (cmdline_mode->specified == false)
|
|
|
|
return mode;
|
|
|
|
|
|
|
|
/* attempt to find a matching mode in the list of modes
|
|
|
|
* we have gotten so far, if not add a CVT mode that conforms
|
|
|
|
*/
|
|
|
|
if (cmdline_mode->rb || cmdline_mode->margins)
|
|
|
|
goto create_mode;
|
|
|
|
|
2010-03-29 23:34:15 -06:00
|
|
|
list_for_each_entry(mode, &fb_helper_conn->connector->modes, head) {
|
2010-03-29 23:34:13 -06:00
|
|
|
/* check width/height */
|
|
|
|
if (mode->hdisplay != cmdline_mode->xres ||
|
|
|
|
mode->vdisplay != cmdline_mode->yres)
|
|
|
|
continue;
|
|
|
|
|
|
|
|
if (cmdline_mode->refresh_specified) {
|
|
|
|
if (mode->vrefresh != cmdline_mode->refresh)
|
|
|
|
continue;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (cmdline_mode->interlace) {
|
|
|
|
if (!(mode->flags & DRM_MODE_FLAG_INTERLACE))
|
|
|
|
continue;
|
|
|
|
}
|
|
|
|
return mode;
|
|
|
|
}
|
|
|
|
|
|
|
|
create_mode:
|
2011-04-17 00:43:32 -06:00
|
|
|
mode = drm_mode_create_from_cmdline_mode(fb_helper_conn->connector->dev,
|
|
|
|
cmdline_mode);
|
2010-03-29 23:34:15 -06:00
|
|
|
list_add(&mode->head, &fb_helper_conn->connector->modes);
|
2010-03-29 23:34:13 -06:00
|
|
|
return mode;
|
|
|
|
}
|
2014-02-12 13:26:24 -07:00
|
|
|
EXPORT_SYMBOL(drm_pick_cmdline_mode);
|
2010-03-29 23:34:13 -06:00
|
|
|
|
|
|
|
static bool drm_connector_enabled(struct drm_connector *connector, bool strict)
|
|
|
|
{
|
|
|
|
bool enable;
|
|
|
|
|
2012-11-14 20:43:30 -07:00
|
|
|
if (strict)
|
2010-03-29 23:34:13 -06:00
|
|
|
enable = connector->status == connector_status_connected;
|
2012-11-14 20:43:30 -07:00
|
|
|
else
|
2010-03-29 23:34:13 -06:00
|
|
|
enable = connector->status != connector_status_disconnected;
|
2012-11-14 20:43:30 -07:00
|
|
|
|
2010-03-29 23:34:13 -06:00
|
|
|
return enable;
|
|
|
|
}
|
|
|
|
|
2010-03-29 23:34:15 -06:00
|
|
|
static void drm_enable_connectors(struct drm_fb_helper *fb_helper,
|
|
|
|
bool *enabled)
|
2010-03-29 23:34:13 -06:00
|
|
|
{
|
|
|
|
bool any_enabled = false;
|
|
|
|
struct drm_connector *connector;
|
|
|
|
int i = 0;
|
|
|
|
|
2010-03-29 23:34:15 -06:00
|
|
|
for (i = 0; i < fb_helper->connector_count; i++) {
|
|
|
|
connector = fb_helper->connector_info[i]->connector;
|
2010-03-29 23:34:13 -06:00
|
|
|
enabled[i] = drm_connector_enabled(connector, true);
|
|
|
|
DRM_DEBUG_KMS("connector %d enabled? %s\n", connector->base.id,
|
|
|
|
enabled[i] ? "yes" : "no");
|
|
|
|
any_enabled |= enabled[i];
|
|
|
|
}
|
|
|
|
|
|
|
|
if (any_enabled)
|
|
|
|
return;
|
|
|
|
|
2010-03-29 23:34:15 -06:00
|
|
|
for (i = 0; i < fb_helper->connector_count; i++) {
|
|
|
|
connector = fb_helper->connector_info[i]->connector;
|
2010-03-29 23:34:13 -06:00
|
|
|
enabled[i] = drm_connector_enabled(connector, false);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2010-05-06 23:02:30 -06:00
|
|
|
static bool drm_target_cloned(struct drm_fb_helper *fb_helper,
|
|
|
|
struct drm_display_mode **modes,
|
|
|
|
bool *enabled, int width, int height)
|
|
|
|
{
|
|
|
|
int count, i, j;
|
|
|
|
bool can_clone = false;
|
|
|
|
struct drm_fb_helper_connector *fb_helper_conn;
|
|
|
|
struct drm_display_mode *dmt_mode, *mode;
|
|
|
|
|
|
|
|
/* only contemplate cloning in the single crtc case */
|
|
|
|
if (fb_helper->crtc_count > 1)
|
|
|
|
return false;
|
|
|
|
|
|
|
|
count = 0;
|
|
|
|
for (i = 0; i < fb_helper->connector_count; i++) {
|
|
|
|
if (enabled[i])
|
|
|
|
count++;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* only contemplate cloning if more than one connector is enabled */
|
|
|
|
if (count <= 1)
|
|
|
|
return false;
|
|
|
|
|
|
|
|
/* check the command line or if nothing common pick 1024x768 */
|
|
|
|
can_clone = true;
|
|
|
|
for (i = 0; i < fb_helper->connector_count; i++) {
|
|
|
|
if (!enabled[i])
|
|
|
|
continue;
|
|
|
|
fb_helper_conn = fb_helper->connector_info[i];
|
|
|
|
modes[i] = drm_pick_cmdline_mode(fb_helper_conn, width, height);
|
|
|
|
if (!modes[i]) {
|
|
|
|
can_clone = false;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
for (j = 0; j < i; j++) {
|
|
|
|
if (!enabled[j])
|
|
|
|
continue;
|
|
|
|
if (!drm_mode_equal(modes[j], modes[i]))
|
|
|
|
can_clone = false;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
if (can_clone) {
|
|
|
|
DRM_DEBUG_KMS("can clone using command line\n");
|
|
|
|
return true;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* try and find a 1024x768 mode on each connector */
|
|
|
|
can_clone = true;
|
2012-04-13 14:33:31 -06:00
|
|
|
dmt_mode = drm_mode_find_dmt(fb_helper->dev, 1024, 768, 60, false);
|
2010-05-06 23:02:30 -06:00
|
|
|
|
|
|
|
for (i = 0; i < fb_helper->connector_count; i++) {
|
|
|
|
|
|
|
|
if (!enabled[i])
|
|
|
|
continue;
|
|
|
|
|
|
|
|
fb_helper_conn = fb_helper->connector_info[i];
|
|
|
|
list_for_each_entry(mode, &fb_helper_conn->connector->modes, head) {
|
|
|
|
if (drm_mode_equal(mode, dmt_mode))
|
|
|
|
modes[i] = mode;
|
|
|
|
}
|
|
|
|
if (!modes[i])
|
|
|
|
can_clone = false;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (can_clone) {
|
|
|
|
DRM_DEBUG_KMS("can clone using 1024x768\n");
|
|
|
|
return true;
|
|
|
|
}
|
|
|
|
DRM_INFO("kms: can't enable cloning when we probably wanted to.\n");
|
|
|
|
return false;
|
|
|
|
}
|
|
|
|
|
2010-03-29 23:34:15 -06:00
|
|
|
static bool drm_target_preferred(struct drm_fb_helper *fb_helper,
|
2010-03-29 23:34:13 -06:00
|
|
|
struct drm_display_mode **modes,
|
|
|
|
bool *enabled, int width, int height)
|
|
|
|
{
|
2010-03-29 23:34:15 -06:00
|
|
|
struct drm_fb_helper_connector *fb_helper_conn;
|
|
|
|
int i;
|
2010-03-29 23:34:13 -06:00
|
|
|
|
2010-03-29 23:34:15 -06:00
|
|
|
for (i = 0; i < fb_helper->connector_count; i++) {
|
|
|
|
fb_helper_conn = fb_helper->connector_info[i];
|
2010-03-29 23:34:13 -06:00
|
|
|
|
2010-03-29 23:34:15 -06:00
|
|
|
if (enabled[i] == false)
|
2010-03-29 23:34:13 -06:00
|
|
|
continue;
|
|
|
|
|
|
|
|
DRM_DEBUG_KMS("looking for cmdline mode on connector %d\n",
|
2010-03-29 23:34:15 -06:00
|
|
|
fb_helper_conn->connector->base.id);
|
2010-03-29 23:34:13 -06:00
|
|
|
|
|
|
|
/* got for command line mode first */
|
2010-03-29 23:34:15 -06:00
|
|
|
modes[i] = drm_pick_cmdline_mode(fb_helper_conn, width, height);
|
2010-03-29 23:34:13 -06:00
|
|
|
if (!modes[i]) {
|
|
|
|
DRM_DEBUG_KMS("looking for preferred mode on connector %d\n",
|
2010-03-29 23:34:15 -06:00
|
|
|
fb_helper_conn->connector->base.id);
|
|
|
|
modes[i] = drm_has_preferred_mode(fb_helper_conn, width, height);
|
2010-03-29 23:34:13 -06:00
|
|
|
}
|
|
|
|
/* No preferred modes, pick one off the list */
|
2010-03-29 23:34:15 -06:00
|
|
|
if (!modes[i] && !list_empty(&fb_helper_conn->connector->modes)) {
|
|
|
|
list_for_each_entry(modes[i], &fb_helper_conn->connector->modes, head)
|
2010-03-29 23:34:13 -06:00
|
|
|
break;
|
|
|
|
}
|
|
|
|
DRM_DEBUG_KMS("found mode %s\n", modes[i] ? modes[i]->name :
|
|
|
|
"none");
|
|
|
|
}
|
|
|
|
return true;
|
|
|
|
}
|
|
|
|
|
2010-03-29 23:34:14 -06:00
|
|
|
static int drm_pick_crtcs(struct drm_fb_helper *fb_helper,
|
|
|
|
struct drm_fb_helper_crtc **best_crtcs,
|
2010-03-29 23:34:13 -06:00
|
|
|
struct drm_display_mode **modes,
|
|
|
|
int n, int width, int height)
|
|
|
|
{
|
|
|
|
int c, o;
|
2010-03-29 23:34:14 -06:00
|
|
|
struct drm_device *dev = fb_helper->dev;
|
2010-03-29 23:34:13 -06:00
|
|
|
struct drm_connector *connector;
|
|
|
|
struct drm_connector_helper_funcs *connector_funcs;
|
|
|
|
struct drm_encoder *encoder;
|
|
|
|
int my_score, best_score, score;
|
2010-03-29 23:34:14 -06:00
|
|
|
struct drm_fb_helper_crtc **crtcs, *crtc;
|
2010-03-29 23:34:15 -06:00
|
|
|
struct drm_fb_helper_connector *fb_helper_conn;
|
2010-03-29 23:34:13 -06:00
|
|
|
|
2010-03-29 23:34:15 -06:00
|
|
|
if (n == fb_helper->connector_count)
|
2010-03-29 23:34:13 -06:00
|
|
|
return 0;
|
2010-03-29 23:34:15 -06:00
|
|
|
|
|
|
|
fb_helper_conn = fb_helper->connector_info[n];
|
|
|
|
connector = fb_helper_conn->connector;
|
2010-03-29 23:34:13 -06:00
|
|
|
|
|
|
|
best_crtcs[n] = NULL;
|
2010-03-29 23:34:14 -06:00
|
|
|
best_score = drm_pick_crtcs(fb_helper, best_crtcs, modes, n+1, width, height);
|
2010-03-29 23:34:13 -06:00
|
|
|
if (modes[n] == NULL)
|
|
|
|
return best_score;
|
|
|
|
|
2010-03-29 23:34:14 -06:00
|
|
|
crtcs = kzalloc(dev->mode_config.num_connector *
|
|
|
|
sizeof(struct drm_fb_helper_crtc *), GFP_KERNEL);
|
2010-03-29 23:34:13 -06:00
|
|
|
if (!crtcs)
|
|
|
|
return best_score;
|
|
|
|
|
|
|
|
my_score = 1;
|
|
|
|
if (connector->status == connector_status_connected)
|
|
|
|
my_score++;
|
2010-03-29 23:34:15 -06:00
|
|
|
if (drm_has_cmdline_mode(fb_helper_conn))
|
2010-03-29 23:34:13 -06:00
|
|
|
my_score++;
|
2010-03-29 23:34:15 -06:00
|
|
|
if (drm_has_preferred_mode(fb_helper_conn, width, height))
|
2010-03-29 23:34:13 -06:00
|
|
|
my_score++;
|
|
|
|
|
|
|
|
connector_funcs = connector->helper_private;
|
|
|
|
encoder = connector_funcs->best_encoder(connector);
|
|
|
|
if (!encoder)
|
|
|
|
goto out;
|
|
|
|
|
|
|
|
/* select a crtc for this connector and then attempt to configure
|
|
|
|
remaining connectors */
|
2010-03-29 23:34:14 -06:00
|
|
|
for (c = 0; c < fb_helper->crtc_count; c++) {
|
|
|
|
crtc = &fb_helper->crtc_info[c];
|
2010-03-29 23:34:13 -06:00
|
|
|
|
2012-11-14 20:43:30 -07:00
|
|
|
if ((encoder->possible_crtcs & (1 << c)) == 0)
|
2010-03-29 23:34:13 -06:00
|
|
|
continue;
|
|
|
|
|
|
|
|
for (o = 0; o < n; o++)
|
|
|
|
if (best_crtcs[o] == crtc)
|
|
|
|
break;
|
|
|
|
|
|
|
|
if (o < n) {
|
2010-05-06 23:02:30 -06:00
|
|
|
/* ignore cloning unless only a single crtc */
|
|
|
|
if (fb_helper->crtc_count > 1)
|
|
|
|
continue;
|
|
|
|
|
|
|
|
if (!drm_mode_equal(modes[o], modes[n]))
|
|
|
|
continue;
|
2010-03-29 23:34:13 -06:00
|
|
|
}
|
|
|
|
|
|
|
|
crtcs[n] = crtc;
|
2010-03-29 23:34:14 -06:00
|
|
|
memcpy(crtcs, best_crtcs, n * sizeof(struct drm_fb_helper_crtc *));
|
|
|
|
score = my_score + drm_pick_crtcs(fb_helper, crtcs, modes, n + 1,
|
2010-03-29 23:34:13 -06:00
|
|
|
width, height);
|
|
|
|
if (score > best_score) {
|
|
|
|
best_score = score;
|
|
|
|
memcpy(best_crtcs, crtcs,
|
|
|
|
dev->mode_config.num_connector *
|
2010-03-29 23:34:14 -06:00
|
|
|
sizeof(struct drm_fb_helper_crtc *));
|
2010-03-29 23:34:13 -06:00
|
|
|
}
|
|
|
|
}
|
|
|
|
out:
|
|
|
|
kfree(crtcs);
|
|
|
|
return best_score;
|
|
|
|
}
|
|
|
|
|
2010-03-29 23:34:14 -06:00
|
|
|
static void drm_setup_crtcs(struct drm_fb_helper *fb_helper)
|
2010-03-29 23:34:13 -06:00
|
|
|
{
|
2010-03-29 23:34:14 -06:00
|
|
|
struct drm_device *dev = fb_helper->dev;
|
|
|
|
struct drm_fb_helper_crtc **crtcs;
|
2010-03-29 23:34:13 -06:00
|
|
|
struct drm_display_mode **modes;
|
2010-03-29 23:34:14 -06:00
|
|
|
struct drm_mode_set *modeset;
|
2010-03-29 23:34:13 -06:00
|
|
|
bool *enabled;
|
|
|
|
int width, height;
|
2013-02-19 14:31:39 -07:00
|
|
|
int i;
|
2010-03-29 23:34:13 -06:00
|
|
|
|
|
|
|
DRM_DEBUG_KMS("\n");
|
|
|
|
|
|
|
|
width = dev->mode_config.max_width;
|
|
|
|
height = dev->mode_config.max_height;
|
|
|
|
|
|
|
|
crtcs = kcalloc(dev->mode_config.num_connector,
|
2010-03-29 23:34:14 -06:00
|
|
|
sizeof(struct drm_fb_helper_crtc *), GFP_KERNEL);
|
2010-03-29 23:34:13 -06:00
|
|
|
modes = kcalloc(dev->mode_config.num_connector,
|
|
|
|
sizeof(struct drm_display_mode *), GFP_KERNEL);
|
|
|
|
enabled = kcalloc(dev->mode_config.num_connector,
|
|
|
|
sizeof(bool), GFP_KERNEL);
|
2012-11-19 02:44:58 -07:00
|
|
|
if (!crtcs || !modes || !enabled) {
|
|
|
|
DRM_ERROR("Memory allocation failed\n");
|
|
|
|
goto out;
|
|
|
|
}
|
|
|
|
|
2010-03-29 23:34:13 -06:00
|
|
|
|
2010-03-29 23:34:15 -06:00
|
|
|
drm_enable_connectors(fb_helper, enabled);
|
2010-03-29 23:34:13 -06:00
|
|
|
|
2013-02-19 14:31:39 -07:00
|
|
|
if (!(fb_helper->funcs->initial_config &&
|
|
|
|
fb_helper->funcs->initial_config(fb_helper, crtcs, modes,
|
|
|
|
enabled, width, height))) {
|
|
|
|
memset(modes, 0, dev->mode_config.num_connector*sizeof(modes[0]));
|
|
|
|
memset(crtcs, 0, dev->mode_config.num_connector*sizeof(crtcs[0]));
|
|
|
|
|
|
|
|
if (!drm_target_cloned(fb_helper,
|
|
|
|
modes, enabled, width, height) &&
|
|
|
|
!drm_target_preferred(fb_helper,
|
|
|
|
modes, enabled, width, height))
|
2010-05-06 23:02:30 -06:00
|
|
|
DRM_ERROR("Unable to find initial modes\n");
|
2010-03-29 23:34:13 -06:00
|
|
|
|
2013-02-19 14:31:39 -07:00
|
|
|
DRM_DEBUG_KMS("picking CRTCs for %dx%d config\n",
|
|
|
|
width, height);
|
2010-03-29 23:34:13 -06:00
|
|
|
|
2013-02-19 14:31:39 -07:00
|
|
|
drm_pick_crtcs(fb_helper, crtcs, modes, 0, width, height);
|
|
|
|
}
|
2010-03-29 23:34:14 -06:00
|
|
|
|
|
|
|
/* need to set the modesets up here for use later */
|
|
|
|
/* fill out the connector<->crtc mappings into the modesets */
|
|
|
|
for (i = 0; i < fb_helper->crtc_count; i++) {
|
|
|
|
modeset = &fb_helper->crtc_info[i].mode_set;
|
|
|
|
modeset->num_connectors = 0;
|
2013-01-21 02:52:17 -07:00
|
|
|
modeset->fb = NULL;
|
2010-03-29 23:34:14 -06:00
|
|
|
}
|
2010-03-29 23:34:13 -06:00
|
|
|
|
2010-03-29 23:34:15 -06:00
|
|
|
for (i = 0; i < fb_helper->connector_count; i++) {
|
2010-03-29 23:34:13 -06:00
|
|
|
struct drm_display_mode *mode = modes[i];
|
2010-03-29 23:34:14 -06:00
|
|
|
struct drm_fb_helper_crtc *fb_crtc = crtcs[i];
|
|
|
|
modeset = &fb_crtc->mode_set;
|
2010-03-29 23:34:13 -06:00
|
|
|
|
2010-03-29 23:34:14 -06:00
|
|
|
if (mode && fb_crtc) {
|
2010-03-29 23:34:13 -06:00
|
|
|
DRM_DEBUG_KMS("desired mode %s set on crtc %d\n",
|
2010-03-29 23:34:14 -06:00
|
|
|
mode->name, fb_crtc->mode_set.crtc->base.id);
|
|
|
|
fb_crtc->desired_mode = mode;
|
|
|
|
if (modeset->mode)
|
|
|
|
drm_mode_destroy(dev, modeset->mode);
|
|
|
|
modeset->mode = drm_mode_duplicate(dev,
|
|
|
|
fb_crtc->desired_mode);
|
2010-03-29 23:34:15 -06:00
|
|
|
modeset->connectors[modeset->num_connectors++] = fb_helper->connector_info[i]->connector;
|
2013-01-21 02:52:17 -07:00
|
|
|
modeset->fb = fb_helper->fb;
|
2010-03-29 23:34:13 -06:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2013-01-21 02:52:17 -07:00
|
|
|
/* Clear out any old modes if there are no more connected outputs. */
|
|
|
|
for (i = 0; i < fb_helper->crtc_count; i++) {
|
|
|
|
modeset = &fb_helper->crtc_info[i].mode_set;
|
|
|
|
if (modeset->num_connectors == 0) {
|
|
|
|
BUG_ON(modeset->fb);
|
|
|
|
BUG_ON(modeset->num_connectors);
|
|
|
|
if (modeset->mode)
|
|
|
|
drm_mode_destroy(dev, modeset->mode);
|
|
|
|
modeset->mode = NULL;
|
|
|
|
}
|
|
|
|
}
|
2012-11-19 02:44:58 -07:00
|
|
|
out:
|
2010-03-29 23:34:13 -06:00
|
|
|
kfree(crtcs);
|
|
|
|
kfree(modes);
|
|
|
|
kfree(enabled);
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
2013-01-20 14:13:14 -07:00
|
|
|
* drm_fb_helper_initial_config - setup a sane initial connector configuration
|
2012-11-01 07:45:17 -06:00
|
|
|
* @fb_helper: fb_helper device struct
|
|
|
|
* @bpp_sel: bpp value to use for the framebuffer configuration
|
2010-03-29 23:34:13 -06:00
|
|
|
*
|
2012-11-01 07:45:17 -06:00
|
|
|
* Scans the CRTCs and connectors and tries to put together an initial setup.
|
2010-03-29 23:34:13 -06:00
|
|
|
* At the moment, this is a cloned configuration across all heads with
|
|
|
|
* a new framebuffer object as the backing store.
|
|
|
|
*
|
2013-01-20 14:13:14 -07:00
|
|
|
* Note that this also registers the fbdev and so allows userspace to call into
|
|
|
|
* the driver through the fbdev interfaces.
|
|
|
|
*
|
|
|
|
* This function will call down into the ->fb_probe callback to let
|
|
|
|
* the driver allocate and initialize the fbdev info structure and the drm
|
|
|
|
* framebuffer used to back the fbdev. drm_fb_helper_fill_var() and
|
|
|
|
* drm_fb_helper_fill_fix() are provided as helpers to setup simple default
|
|
|
|
* values for the fbdev info structure.
|
|
|
|
*
|
2010-03-29 23:34:13 -06:00
|
|
|
* RETURNS:
|
|
|
|
* Zero if everything went ok, nonzero otherwise.
|
|
|
|
*/
|
2010-03-29 23:34:18 -06:00
|
|
|
bool drm_fb_helper_initial_config(struct drm_fb_helper *fb_helper, int bpp_sel)
|
2010-03-29 23:34:13 -06:00
|
|
|
{
|
2010-03-29 23:34:14 -06:00
|
|
|
struct drm_device *dev = fb_helper->dev;
|
2010-03-29 23:34:13 -06:00
|
|
|
int count = 0;
|
|
|
|
|
2010-03-29 23:34:15 -06:00
|
|
|
drm_fb_helper_parse_command_line(fb_helper);
|
2010-03-29 23:34:13 -06:00
|
|
|
|
2010-03-29 23:34:15 -06:00
|
|
|
count = drm_fb_helper_probe_connector_modes(fb_helper,
|
|
|
|
dev->mode_config.max_width,
|
|
|
|
dev->mode_config.max_height);
|
2010-03-29 23:34:13 -06:00
|
|
|
/*
|
|
|
|
* we shouldn't end up with no modes here.
|
|
|
|
*/
|
2012-11-14 20:43:30 -07:00
|
|
|
if (count == 0)
|
2012-11-14 20:43:29 -07:00
|
|
|
dev_info(fb_helper->dev->dev, "No connectors reported connected with modes\n");
|
2012-11-14 20:43:30 -07:00
|
|
|
|
2010-03-29 23:34:14 -06:00
|
|
|
drm_setup_crtcs(fb_helper);
|
2010-03-29 23:34:13 -06:00
|
|
|
|
2010-03-29 23:34:18 -06:00
|
|
|
return drm_fb_helper_single_fb_probe(fb_helper, bpp_sel);
|
2010-03-29 23:34:13 -06:00
|
|
|
}
|
2010-03-29 23:34:14 -06:00
|
|
|
EXPORT_SYMBOL(drm_fb_helper_initial_config);
|
2010-03-29 23:34:13 -06:00
|
|
|
|
2011-04-22 04:03:57 -06:00
|
|
|
/**
|
|
|
|
* drm_fb_helper_hotplug_event - respond to a hotplug notification by
|
2012-11-01 07:45:17 -06:00
|
|
|
* probing all the outputs attached to the fb
|
2011-04-22 04:03:57 -06:00
|
|
|
* @fb_helper: the drm_fb_helper
|
|
|
|
*
|
|
|
|
* Scan the connectors attached to the fb_helper and try to put together a
|
|
|
|
* setup after *notification of a change in output configuration.
|
|
|
|
*
|
2013-01-20 14:13:14 -07:00
|
|
|
* Called at runtime, takes the mode config locks to be able to check/change the
|
|
|
|
* modeset configuration. Must be run from process context (which usually means
|
|
|
|
* either the output polling work or a work item launched from the driver's
|
|
|
|
* hotplug interrupt).
|
|
|
|
*
|
|
|
|
* Note that the driver must ensure that this is only called _after_ the fb has
|
|
|
|
* been fully set up, i.e. after the call to drm_fb_helper_initial_config.
|
|
|
|
*
|
2011-04-22 04:03:57 -06:00
|
|
|
* RETURNS:
|
|
|
|
* 0 on success and a non-zero error code otherwise.
|
|
|
|
*/
|
|
|
|
int drm_fb_helper_hotplug_event(struct drm_fb_helper *fb_helper)
|
2010-03-29 23:34:13 -06:00
|
|
|
{
|
2011-04-22 04:03:57 -06:00
|
|
|
struct drm_device *dev = fb_helper->dev;
|
2013-09-28 09:24:05 -06:00
|
|
|
u32 max_width, max_height;
|
2010-03-29 23:34:17 -06:00
|
|
|
|
2010-05-07 00:42:51 -06:00
|
|
|
if (!fb_helper->fb)
|
2011-04-22 04:03:57 -06:00
|
|
|
return 0;
|
2010-03-29 23:34:18 -06:00
|
|
|
|
2013-04-11 08:26:55 -06:00
|
|
|
mutex_lock(&fb_helper->dev->mode_config.mutex);
|
2012-12-17 04:13:23 -07:00
|
|
|
if (!drm_fb_helper_is_bound(fb_helper)) {
|
2010-03-29 23:34:18 -06:00
|
|
|
fb_helper->delayed_hotplug = true;
|
2013-04-11 08:26:55 -06:00
|
|
|
mutex_unlock(&fb_helper->dev->mode_config.mutex);
|
2011-04-22 04:03:57 -06:00
|
|
|
return 0;
|
2010-03-29 23:34:18 -06:00
|
|
|
}
|
2010-05-07 00:42:51 -06:00
|
|
|
DRM_DEBUG_KMS("\n");
|
2010-03-29 23:34:18 -06:00
|
|
|
|
2010-05-07 00:42:51 -06:00
|
|
|
max_width = fb_helper->fb->width;
|
|
|
|
max_height = fb_helper->fb->height;
|
2010-03-29 23:34:17 -06:00
|
|
|
|
2013-09-28 09:24:05 -06:00
|
|
|
drm_fb_helper_probe_connector_modes(fb_helper, max_width, max_height);
|
2013-04-11 08:26:55 -06:00
|
|
|
mutex_unlock(&fb_helper->dev->mode_config.mutex);
|
|
|
|
|
|
|
|
drm_modeset_lock_all(dev);
|
2010-05-07 00:42:51 -06:00
|
|
|
drm_setup_crtcs(fb_helper);
|
2012-12-01 16:28:11 -07:00
|
|
|
drm_modeset_unlock_all(dev);
|
2013-01-21 15:12:36 -07:00
|
|
|
drm_fb_helper_set_par(fb_helper->fbdev);
|
|
|
|
|
|
|
|
return 0;
|
2010-03-29 23:34:17 -06:00
|
|
|
}
|
2010-05-07 00:42:51 -06:00
|
|
|
EXPORT_SYMBOL(drm_fb_helper_hotplug_event);
|
2010-03-29 23:34:17 -06:00
|
|
|
|
2011-01-20 15:44:16 -07:00
|
|
|
/* The Kconfig DRM_KMS_HELPER selects FRAMEBUFFER_CONSOLE (if !EXPERT)
|
2010-12-12 11:39:22 -07:00
|
|
|
* but the module doesn't depend on any fb console symbols. At least
|
|
|
|
* attempt to load fbcon to avoid leaving the system without a usable console.
|
|
|
|
*/
|
2011-01-20 15:44:16 -07:00
|
|
|
#if defined(CONFIG_FRAMEBUFFER_CONSOLE_MODULE) && !defined(CONFIG_EXPERT)
|
2010-12-12 11:39:22 -07:00
|
|
|
static int __init drm_fb_helper_modinit(void)
|
|
|
|
{
|
|
|
|
const char *name = "fbcon";
|
|
|
|
struct module *fbcon;
|
|
|
|
|
|
|
|
mutex_lock(&module_mutex);
|
|
|
|
fbcon = find_module(name);
|
|
|
|
mutex_unlock(&module_mutex);
|
|
|
|
|
|
|
|
if (!fbcon)
|
|
|
|
request_module_nowait(name);
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
module_init(drm_fb_helper_modinit);
|
|
|
|
#endif
|