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
|
2014-04-29 03:44:35 -06:00
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* mode setting driver. They can be used mostly independently from the crtc
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2012-11-01 07:45:17 -06:00
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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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2014-06-27 09:19:24 -06:00
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* Initialization is done as a four-step process with drm_fb_helper_prepare(),
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* drm_fb_helper_init(), drm_fb_helper_single_add_all_connectors() and
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* drm_fb_helper_initial_config(). Drivers with fancier requirements than the
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* default behaviour can override the third step with their own code.
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* Teardown is done with drm_fb_helper_fini().
|
2013-01-20 14:13:14 -07:00
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*
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* At runtime drivers should restore the fbdev console by calling
|
2015-08-04 07:22:10 -06:00
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* drm_fb_helper_restore_fbdev_mode_unlocked() from their ->lastclose callback.
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* They should also notify the fb helper code from updates to the output
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2013-01-20 14:13:14 -07:00
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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
|
2014-04-29 03:44:35 -06:00
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* code provides a ->output_poll_changed callback.
|
2013-01-20 14:13:14 -07:00
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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.
|
2014-06-27 09:19:24 -06:00
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*
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* It is possible, though perhaps somewhat tricky, to implement race-free
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* hotplug detection using the fbdev helpers. The drm_fb_helper_prepare()
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* helper must be called first to initialize the minimum required to make
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* hotplug detection work. Drivers also need to make sure to properly set up
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* the dev->mode_config.funcs member. After calling drm_kms_helper_poll_init()
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* it is safe to enable interrupts and start processing hotplug events. At the
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* same time, drivers should initialize all modeset objects such as CRTCs,
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* encoders and connectors. To finish up the fbdev helper initialization, the
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* drm_fb_helper_init() function is called. To probe for all attached displays
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* and set up an initial configuration using the detected hardware, drivers
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* should call drm_fb_helper_single_add_all_connectors() followed by
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* drm_fb_helper_initial_config().
|
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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*
|
2015-07-09 15:44:27 -06:00
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* This function is protected against concurrent connector hotadds/removals
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* using drm_fb_helper_add_one_connector() and
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* drm_fb_helper_remove_one_connector().
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2013-01-20 14:13:14 -07:00
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*/
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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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{
|
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
|
|
|
|
2015-07-09 15:44:27 -06:00
|
|
|
mutex_lock(&dev->mode_config.mutex);
|
drm: Add modeset object iterators
And roll them out across drm_* files. The point here isn't code
prettification (it helps with that too) but that some of these lists
aren't static any more. And having macros will gives us a convenient
place to put locking checks into.
I didn't add an iterator for props since that's only used by a
list_for_each_entry_safe in the driver teardown code.
Search&replace was done with the below cocci spatch. Note that there's
a bunch more places that didn't match and which would need some manual
changes, but I've intentially left these out for this mostly automated
patch.
iterator name drm_for_each_crtc;
struct drm_crtc *crtc;
struct drm_device *dev;
expression head;
@@
- list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
+ drm_for_each_crtc (crtc, dev) {
...
}
@@
iterator name drm_for_each_encoder;
struct drm_encoder *encoder;
struct drm_device *dev;
expression head;
@@
- list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
+ drm_for_each_encoder (encoder, dev) {
...
}
@@
iterator name drm_for_each_fb;
struct drm_framebuffer *fb;
struct drm_device *dev;
expression head;
@@
- list_for_each_entry(fb, &dev->mode_config.fb_list, head) {
+ drm_for_each_fb (fb, dev) {
...
}
@@
iterator name drm_for_each_connector;
struct drm_connector *connector;
struct drm_device *dev;
expression head;
@@
- list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
+ drm_for_each_connector (connector, dev) {
...
}
Reviewed-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
2015-07-09 15:44:25 -06:00
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drm_for_each_connector(connector, dev) {
|
2010-03-29 23:34:15 -06:00
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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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}
|
2015-07-09 15:44:27 -06:00
|
|
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mutex_unlock(&dev->mode_config.mutex);
|
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
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fail:
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for (i = 0; i < fb_helper->connector_count; i++) {
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kfree(fb_helper->connector_info[i]);
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fb_helper->connector_info[i] = NULL;
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}
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fb_helper->connector_count = 0;
|
2015-07-09 15:44:27 -06:00
|
|
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mutex_unlock(&dev->mode_config.mutex);
|
|
|
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|
2010-03-29 23:34:15 -06:00
|
|
|
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
|
|
|
|
2014-06-04 22:01:30 -06:00
|
|
|
int drm_fb_helper_add_one_connector(struct drm_fb_helper *fb_helper, struct drm_connector *connector)
|
|
|
|
{
|
|
|
|
struct drm_fb_helper_connector **temp;
|
|
|
|
struct drm_fb_helper_connector *fb_helper_connector;
|
|
|
|
|
|
|
|
WARN_ON(!mutex_is_locked(&fb_helper->dev->mode_config.mutex));
|
|
|
|
if (fb_helper->connector_count + 1 > fb_helper->connector_info_alloc_count) {
|
2014-08-08 12:15:20 -06:00
|
|
|
temp = krealloc(fb_helper->connector_info, sizeof(struct drm_fb_helper_connector *) * (fb_helper->connector_count + 1), GFP_KERNEL);
|
2014-06-04 22:01:30 -06:00
|
|
|
if (!temp)
|
|
|
|
return -ENOMEM;
|
|
|
|
|
|
|
|
fb_helper->connector_info_alloc_count = fb_helper->connector_count + 1;
|
|
|
|
fb_helper->connector_info = temp;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
fb_helper_connector = kzalloc(sizeof(struct drm_fb_helper_connector), GFP_KERNEL);
|
|
|
|
if (!fb_helper_connector)
|
|
|
|
return -ENOMEM;
|
|
|
|
|
|
|
|
fb_helper_connector->connector = connector;
|
|
|
|
fb_helper->connector_info[fb_helper->connector_count++] = fb_helper_connector;
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(drm_fb_helper_add_one_connector);
|
|
|
|
|
2015-01-26 08:11:08 -07:00
|
|
|
static void remove_from_modeset(struct drm_mode_set *set,
|
|
|
|
struct drm_connector *connector)
|
|
|
|
{
|
|
|
|
int i, j;
|
|
|
|
|
|
|
|
for (i = 0; i < set->num_connectors; i++) {
|
|
|
|
if (set->connectors[i] == connector)
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (i == set->num_connectors)
|
|
|
|
return;
|
|
|
|
|
|
|
|
for (j = i + 1; j < set->num_connectors; j++) {
|
|
|
|
set->connectors[j - 1] = set->connectors[j];
|
|
|
|
}
|
|
|
|
set->num_connectors--;
|
|
|
|
|
|
|
|
/* because i915 is pissy about this..
|
|
|
|
* TODO maybe need to makes sure we set it back to !=NULL somewhere?
|
|
|
|
*/
|
|
|
|
if (set->num_connectors == 0)
|
|
|
|
set->fb = NULL;
|
|
|
|
}
|
|
|
|
|
2014-06-04 22:01:30 -06:00
|
|
|
int drm_fb_helper_remove_one_connector(struct drm_fb_helper *fb_helper,
|
|
|
|
struct drm_connector *connector)
|
|
|
|
{
|
|
|
|
struct drm_fb_helper_connector *fb_helper_connector;
|
|
|
|
int i, j;
|
|
|
|
|
|
|
|
WARN_ON(!mutex_is_locked(&fb_helper->dev->mode_config.mutex));
|
|
|
|
|
|
|
|
for (i = 0; i < fb_helper->connector_count; i++) {
|
|
|
|
if (fb_helper->connector_info[i]->connector == connector)
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (i == fb_helper->connector_count)
|
|
|
|
return -EINVAL;
|
|
|
|
fb_helper_connector = fb_helper->connector_info[i];
|
|
|
|
|
|
|
|
for (j = i + 1; j < fb_helper->connector_count; j++) {
|
|
|
|
fb_helper->connector_info[j - 1] = fb_helper->connector_info[j];
|
|
|
|
}
|
|
|
|
fb_helper->connector_count--;
|
|
|
|
kfree(fb_helper_connector);
|
2015-01-26 08:11:08 -07:00
|
|
|
|
|
|
|
/* also cleanup dangling references to the connector: */
|
|
|
|
for (i = 0; i < fb_helper->crtc_count; i++)
|
|
|
|
remove_from_modeset(&fb_helper->crtc_info[i].mode_set, connector);
|
|
|
|
|
2014-06-04 22:01:30 -06:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(drm_fb_helper_remove_one_connector);
|
|
|
|
|
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;
|
2015-03-11 03:51:06 -06:00
|
|
|
const struct drm_crtc_helper_funcs *funcs;
|
2010-08-05 08:22:31 -06:00
|
|
|
int i;
|
|
|
|
|
|
|
|
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;
|
|
|
|
|
drm: Add modeset object iterators
And roll them out across drm_* files. The point here isn't code
prettification (it helps with that too) but that some of these lists
aren't static any more. And having macros will gives us a convenient
place to put locking checks into.
I didn't add an iterator for props since that's only used by a
list_for_each_entry_safe in the driver teardown code.
Search&replace was done with the below cocci spatch. Note that there's
a bunch more places that didn't match and which would need some manual
changes, but I've intentially left these out for this mostly automated
patch.
iterator name drm_for_each_crtc;
struct drm_crtc *crtc;
struct drm_device *dev;
expression head;
@@
- list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
+ drm_for_each_crtc (crtc, dev) {
...
}
@@
iterator name drm_for_each_encoder;
struct drm_encoder *encoder;
struct drm_device *dev;
expression head;
@@
- list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
+ drm_for_each_encoder (encoder, dev) {
...
}
@@
iterator name drm_for_each_fb;
struct drm_framebuffer *fb;
struct drm_device *dev;
expression head;
@@
- list_for_each_entry(fb, &dev->mode_config.fb_list, head) {
+ drm_for_each_fb (fb, dev) {
...
}
@@
iterator name drm_for_each_connector;
struct drm_connector *connector;
struct drm_device *dev;
expression head;
@@
- list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
+ drm_for_each_connector (connector, dev) {
...
}
Reviewed-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
2015-07-09 15:44:25 -06:00
|
|
|
drm_for_each_crtc(c, dev) {
|
2010-08-05 08:22:31 -06:00
|
|
|
if (crtc->base.id == c->base.id)
|
2014-04-01 16:22:40 -06:00
|
|
|
return c->primary->fb;
|
2010-08-05 08:22:31 -06:00
|
|
|
}
|
|
|
|
|
|
|
|
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;
|
2015-03-11 03:51:06 -06:00
|
|
|
const struct drm_crtc_helper_funcs *funcs;
|
2010-08-05 08:22:31 -06:00
|
|
|
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);
|
|
|
|
|
2014-05-30 10:29:48 -06:00
|
|
|
static bool restore_fbdev_mode(struct drm_fb_helper *fb_helper)
|
2011-04-21 15:18:32 -06:00
|
|
|
{
|
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
|
|
|
|
drm: Add modeset object iterators
And roll them out across drm_* files. The point here isn't code
prettification (it helps with that too) but that some of these lists
aren't static any more. And having macros will gives us a convenient
place to put locking checks into.
I didn't add an iterator for props since that's only used by a
list_for_each_entry_safe in the driver teardown code.
Search&replace was done with the below cocci spatch. Note that there's
a bunch more places that didn't match and which would need some manual
changes, but I've intentially left these out for this mostly automated
patch.
iterator name drm_for_each_crtc;
struct drm_crtc *crtc;
struct drm_device *dev;
expression head;
@@
- list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
+ drm_for_each_crtc (crtc, dev) {
...
}
@@
iterator name drm_for_each_encoder;
struct drm_encoder *encoder;
struct drm_device *dev;
expression head;
@@
- list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
+ drm_for_each_encoder (encoder, dev) {
...
}
@@
iterator name drm_for_each_fb;
struct drm_framebuffer *fb;
struct drm_device *dev;
expression head;
@@
- list_for_each_entry(fb, &dev->mode_config.fb_list, head) {
+ drm_for_each_fb (fb, dev) {
...
}
@@
iterator name drm_for_each_connector;
struct drm_connector *connector;
struct drm_device *dev;
expression head;
@@
- list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
+ drm_for_each_connector (connector, dev) {
...
}
Reviewed-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
2015-07-09 15:44:25 -06:00
|
|
|
drm_for_each_plane(plane, dev) {
|
2014-04-01 16:22:30 -06:00
|
|
|
if (plane->type != DRM_PLANE_TYPE_PRIMARY)
|
|
|
|
drm_plane_force_disable(plane);
|
2013-01-20 09:32:21 -07:00
|
|
|
|
2014-08-04 23:56:57 -06:00
|
|
|
if (dev->mode_config.rotation_property) {
|
2014-08-20 07:45:00 -06:00
|
|
|
drm_mode_plane_set_obj_prop(plane,
|
|
|
|
dev->mode_config.rotation_property,
|
|
|
|
BIT(DRM_ROTATE_0));
|
2014-08-04 23:56:57 -06:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
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;
|
|
|
|
}
|
2014-05-30 10:29:48 -06:00
|
|
|
|
|
|
|
/**
|
|
|
|
* drm_fb_helper_restore_fbdev_mode_unlocked - restore fbdev configuration
|
|
|
|
* @fb_helper: fbcon to restore
|
|
|
|
*
|
|
|
|
* 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.
|
|
|
|
*/
|
|
|
|
bool drm_fb_helper_restore_fbdev_mode_unlocked(struct drm_fb_helper *fb_helper)
|
|
|
|
{
|
|
|
|
struct drm_device *dev = fb_helper->dev;
|
|
|
|
bool ret;
|
2014-11-25 20:15:24 -07:00
|
|
|
bool do_delayed = false;
|
|
|
|
|
2014-05-30 10:29:48 -06:00
|
|
|
drm_modeset_lock_all(dev);
|
|
|
|
ret = restore_fbdev_mode(fb_helper);
|
2014-11-25 20:15:24 -07:00
|
|
|
|
|
|
|
do_delayed = fb_helper->delayed_hotplug;
|
|
|
|
if (do_delayed)
|
|
|
|
fb_helper->delayed_hotplug = false;
|
2014-05-30 10:29:48 -06:00
|
|
|
drm_modeset_unlock_all(dev);
|
2014-11-25 20:15:24 -07:00
|
|
|
|
|
|
|
if (do_delayed)
|
|
|
|
drm_fb_helper_hotplug_event(fb_helper);
|
2014-05-30 10:29:48 -06:00
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(drm_fb_helper_restore_fbdev_mode_unlocked);
|
2011-04-21 15:18:32 -06:00
|
|
|
|
2015-08-04 07:22:11 -06:00
|
|
|
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;
|
|
|
|
|
|
|
|
/* Sometimes user space wants everything disabled, so don't steal the
|
|
|
|
* display if there's a master. */
|
|
|
|
if (dev->primary->master)
|
|
|
|
return false;
|
|
|
|
|
|
|
|
drm_for_each_crtc(crtc, dev) {
|
|
|
|
if (crtc->primary->fb)
|
|
|
|
crtcs_bound++;
|
|
|
|
if (crtc->primary->fb == fb_helper->fb)
|
|
|
|
bound++;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (bound < crtcs_bound)
|
|
|
|
return false;
|
|
|
|
|
|
|
|
return true;
|
|
|
|
}
|
|
|
|
|
|
|
|
#ifdef CONFIG_MAGIC_SYSRQ
|
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) {
|
2014-04-29 03:44:32 -06:00
|
|
|
struct drm_device *dev = helper->dev;
|
|
|
|
|
|
|
|
if (dev->switch_power_state == DRM_SWITCH_POWER_OFF)
|
|
|
|
continue;
|
|
|
|
|
2015-07-28 05:18:41 -06:00
|
|
|
drm_modeset_lock_all(dev);
|
2015-08-04 07:22:10 -06:00
|
|
|
ret = restore_fbdev_mode(helper);
|
2011-04-21 15:18:32 -06:00
|
|
|
if (ret)
|
|
|
|
error = true;
|
2014-07-27 11:09:33 -06:00
|
|
|
drm_modeset_unlock_all(dev);
|
2009-08-27 23:46:53 -06:00
|
|
|
}
|
|
|
|
return error;
|
|
|
|
}
|
|
|
|
|
|
|
|
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
|
|
|
|
|
|
|
/*
|
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)
|
|
|
|
{
|
2015-07-28 05:18:40 -06:00
|
|
|
if (oops_in_progress)
|
|
|
|
return -EBUSY;
|
|
|
|
|
2009-08-27 23:46:53 -06:00
|
|
|
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);
|
|
|
|
}
|
|
|
|
|
2014-06-27 09:19:24 -06:00
|
|
|
/**
|
|
|
|
* drm_fb_helper_prepare - setup a drm_fb_helper structure
|
|
|
|
* @dev: DRM device
|
|
|
|
* @helper: driver-allocated fbdev helper structure to set up
|
|
|
|
* @funcs: pointer to structure of functions associate with this helper
|
|
|
|
*
|
|
|
|
* Sets up the bare minimum to make the framebuffer helper usable. This is
|
|
|
|
* useful to implement race-free initialization of the polling helpers.
|
|
|
|
*/
|
|
|
|
void drm_fb_helper_prepare(struct drm_device *dev, struct drm_fb_helper *helper,
|
|
|
|
const struct drm_fb_helper_funcs *funcs)
|
|
|
|
{
|
|
|
|
INIT_LIST_HEAD(&helper->kernel_fb_list);
|
|
|
|
helper->funcs = funcs;
|
|
|
|
helper->dev = dev;
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(drm_fb_helper_prepare);
|
|
|
|
|
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.
|
|
|
|
*
|
2014-06-27 09:19:24 -06:00
|
|
|
* Drivers must call drm_fb_helper_prepare() before calling this function.
|
2013-01-20 14:13:14 -07:00
|
|
|
*
|
|
|
|
* 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;
|
|
|
|
|
2014-03-09 19:33:58 -06:00
|
|
|
if (!max_conn_count)
|
|
|
|
return -EINVAL;
|
|
|
|
|
2010-03-29 23:34:18 -06:00
|
|
|
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;
|
|
|
|
}
|
2014-06-04 22:01:30 -06:00
|
|
|
fb_helper->connector_info_alloc_count = dev->mode_config.num_connector;
|
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;
|
drm: Add modeset object iterators
And roll them out across drm_* files. The point here isn't code
prettification (it helps with that too) but that some of these lists
aren't static any more. And having macros will gives us a convenient
place to put locking checks into.
I didn't add an iterator for props since that's only used by a
list_for_each_entry_safe in the driver teardown code.
Search&replace was done with the below cocci spatch. Note that there's
a bunch more places that didn't match and which would need some manual
changes, but I've intentially left these out for this mostly automated
patch.
iterator name drm_for_each_crtc;
struct drm_crtc *crtc;
struct drm_device *dev;
expression head;
@@
- list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
+ drm_for_each_crtc (crtc, dev) {
...
}
@@
iterator name drm_for_each_encoder;
struct drm_encoder *encoder;
struct drm_device *dev;
expression head;
@@
- list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
+ drm_for_each_encoder (encoder, dev) {
...
}
@@
iterator name drm_for_each_fb;
struct drm_framebuffer *fb;
struct drm_device *dev;
expression head;
@@
- list_for_each_entry(fb, &dev->mode_config.fb_list, head) {
+ drm_for_each_fb (fb, dev) {
...
}
@@
iterator name drm_for_each_connector;
struct drm_connector *connector;
struct drm_device *dev;
expression head;
@@
- list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
+ drm_for_each_connector (connector, dev) {
...
}
Reviewed-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
2015-07-09 15:44:25 -06:00
|
|
|
drm_for_each_crtc(crtc, dev) {
|
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);
|
|
|
|
|
2015-07-22 03:27:56 -06:00
|
|
|
/**
|
|
|
|
* drm_fb_helper_alloc_fbi - allocate fb_info and some of its members
|
|
|
|
* @fb_helper: driver-allocated fbdev helper
|
|
|
|
*
|
|
|
|
* A helper to alloc fb_info and the members cmap and apertures. Called
|
|
|
|
* by the driver within the fb_probe fb_helper callback function.
|
|
|
|
*
|
|
|
|
* RETURNS:
|
|
|
|
* fb_info pointer if things went okay, pointer containing error code
|
|
|
|
* otherwise
|
|
|
|
*/
|
|
|
|
struct fb_info *drm_fb_helper_alloc_fbi(struct drm_fb_helper *fb_helper)
|
|
|
|
{
|
|
|
|
struct device *dev = fb_helper->dev->dev;
|
|
|
|
struct fb_info *info;
|
|
|
|
int ret;
|
|
|
|
|
|
|
|
info = framebuffer_alloc(0, dev);
|
|
|
|
if (!info)
|
|
|
|
return ERR_PTR(-ENOMEM);
|
|
|
|
|
|
|
|
ret = fb_alloc_cmap(&info->cmap, 256, 0);
|
|
|
|
if (ret)
|
|
|
|
goto err_release;
|
|
|
|
|
|
|
|
info->apertures = alloc_apertures(1);
|
|
|
|
if (!info->apertures) {
|
|
|
|
ret = -ENOMEM;
|
|
|
|
goto err_free_cmap;
|
|
|
|
}
|
|
|
|
|
|
|
|
fb_helper->fbdev = info;
|
|
|
|
|
|
|
|
return info;
|
|
|
|
|
|
|
|
err_free_cmap:
|
|
|
|
fb_dealloc_cmap(&info->cmap);
|
|
|
|
err_release:
|
|
|
|
framebuffer_release(info);
|
|
|
|
return ERR_PTR(ret);
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(drm_fb_helper_alloc_fbi);
|
|
|
|
|
|
|
|
/**
|
|
|
|
* drm_fb_helper_unregister_fbi - unregister fb_info framebuffer device
|
|
|
|
* @fb_helper: driver-allocated fbdev helper
|
|
|
|
*
|
|
|
|
* A wrapper around unregister_framebuffer, to release the fb_info
|
|
|
|
* framebuffer device
|
|
|
|
*/
|
|
|
|
void drm_fb_helper_unregister_fbi(struct drm_fb_helper *fb_helper)
|
|
|
|
{
|
|
|
|
if (fb_helper && fb_helper->fbdev)
|
|
|
|
unregister_framebuffer(fb_helper->fbdev);
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(drm_fb_helper_unregister_fbi);
|
|
|
|
|
|
|
|
/**
|
|
|
|
* drm_fb_helper_release_fbi - dealloc fb_info and its members
|
|
|
|
* @fb_helper: driver-allocated fbdev helper
|
|
|
|
*
|
|
|
|
* A helper to free memory taken by fb_info and the members cmap and
|
|
|
|
* apertures
|
|
|
|
*/
|
|
|
|
void drm_fb_helper_release_fbi(struct drm_fb_helper *fb_helper)
|
|
|
|
{
|
|
|
|
if (fb_helper) {
|
|
|
|
struct fb_info *info = fb_helper->fbdev;
|
|
|
|
|
|
|
|
if (info) {
|
|
|
|
if (info->cmap.len)
|
|
|
|
fb_dealloc_cmap(&info->cmap);
|
|
|
|
framebuffer_release(info);
|
|
|
|
}
|
|
|
|
|
|
|
|
fb_helper->fbdev = NULL;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(drm_fb_helper_release_fbi);
|
|
|
|
|
2010-03-29 23:34:18 -06:00
|
|
|
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)) {
|
|
|
|
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
|
|
|
|
2015-07-22 03:27:57 -06:00
|
|
|
/**
|
|
|
|
* drm_fb_helper_unlink_fbi - wrapper around unlink_framebuffer
|
|
|
|
* @fb_helper: driver-allocated fbdev helper
|
|
|
|
*
|
|
|
|
* A wrapper around unlink_framebuffer implemented by fbdev core
|
|
|
|
*/
|
|
|
|
void drm_fb_helper_unlink_fbi(struct drm_fb_helper *fb_helper)
|
|
|
|
{
|
|
|
|
if (fb_helper && fb_helper->fbdev)
|
|
|
|
unlink_framebuffer(fb_helper->fbdev);
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(drm_fb_helper_unlink_fbi);
|
|
|
|
|
2015-07-31 04:51:41 -06:00
|
|
|
/**
|
|
|
|
* drm_fb_helper_sys_read - wrapper around fb_sys_read
|
|
|
|
* @info: fb_info struct pointer
|
|
|
|
* @buf: userspace buffer to read from framebuffer memory
|
|
|
|
* @count: number of bytes to read from framebuffer memory
|
|
|
|
* @ppos: read offset within framebuffer memory
|
|
|
|
*
|
|
|
|
* A wrapper around fb_sys_read implemented by fbdev core
|
|
|
|
*/
|
|
|
|
ssize_t drm_fb_helper_sys_read(struct fb_info *info, char __user *buf,
|
|
|
|
size_t count, loff_t *ppos)
|
|
|
|
{
|
|
|
|
return fb_sys_read(info, buf, count, ppos);
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(drm_fb_helper_sys_read);
|
|
|
|
|
|
|
|
/**
|
|
|
|
* drm_fb_helper_sys_write - wrapper around fb_sys_write
|
|
|
|
* @info: fb_info struct pointer
|
|
|
|
* @buf: userspace buffer to write to framebuffer memory
|
|
|
|
* @count: number of bytes to write to framebuffer memory
|
|
|
|
* @ppos: write offset within framebuffer memory
|
|
|
|
*
|
|
|
|
* A wrapper around fb_sys_write implemented by fbdev core
|
|
|
|
*/
|
|
|
|
ssize_t drm_fb_helper_sys_write(struct fb_info *info, const char __user *buf,
|
|
|
|
size_t count, loff_t *ppos)
|
|
|
|
{
|
|
|
|
return fb_sys_write(info, buf, count, ppos);
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(drm_fb_helper_sys_write);
|
|
|
|
|
2015-07-31 04:51:42 -06:00
|
|
|
/**
|
|
|
|
* drm_fb_helper_sys_fillrect - wrapper around sys_fillrect
|
|
|
|
* @info: fbdev registered by the helper
|
|
|
|
* @rect: info about rectangle to fill
|
|
|
|
*
|
|
|
|
* A wrapper around sys_fillrect implemented by fbdev core
|
|
|
|
*/
|
|
|
|
void drm_fb_helper_sys_fillrect(struct fb_info *info,
|
|
|
|
const struct fb_fillrect *rect)
|
|
|
|
{
|
|
|
|
sys_fillrect(info, rect);
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(drm_fb_helper_sys_fillrect);
|
|
|
|
|
|
|
|
/**
|
|
|
|
* drm_fb_helper_sys_copyarea - wrapper around sys_copyarea
|
|
|
|
* @info: fbdev registered by the helper
|
|
|
|
* @area: info about area to copy
|
|
|
|
*
|
|
|
|
* A wrapper around sys_copyarea implemented by fbdev core
|
|
|
|
*/
|
|
|
|
void drm_fb_helper_sys_copyarea(struct fb_info *info,
|
|
|
|
const struct fb_copyarea *area)
|
|
|
|
{
|
|
|
|
sys_copyarea(info, area);
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(drm_fb_helper_sys_copyarea);
|
|
|
|
|
|
|
|
/**
|
|
|
|
* drm_fb_helper_sys_imageblit - wrapper around sys_imageblit
|
|
|
|
* @info: fbdev registered by the helper
|
|
|
|
* @image: info about image to blit
|
|
|
|
*
|
|
|
|
* A wrapper around sys_imageblit implemented by fbdev core
|
|
|
|
*/
|
|
|
|
void drm_fb_helper_sys_imageblit(struct fb_info *info,
|
|
|
|
const struct fb_image *image)
|
|
|
|
{
|
|
|
|
sys_imageblit(info, image);
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(drm_fb_helper_sys_imageblit);
|
|
|
|
|
|
|
|
/**
|
|
|
|
* drm_fb_helper_cfb_fillrect - wrapper around cfb_fillrect
|
|
|
|
* @info: fbdev registered by the helper
|
|
|
|
* @rect: info about rectangle to fill
|
|
|
|
*
|
|
|
|
* A wrapper around cfb_imageblit implemented by fbdev core
|
|
|
|
*/
|
|
|
|
void drm_fb_helper_cfb_fillrect(struct fb_info *info,
|
|
|
|
const struct fb_fillrect *rect)
|
|
|
|
{
|
|
|
|
cfb_fillrect(info, rect);
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(drm_fb_helper_cfb_fillrect);
|
|
|
|
|
|
|
|
/**
|
|
|
|
* drm_fb_helper_cfb_copyarea - wrapper around cfb_copyarea
|
|
|
|
* @info: fbdev registered by the helper
|
|
|
|
* @area: info about area to copy
|
|
|
|
*
|
|
|
|
* A wrapper around cfb_copyarea implemented by fbdev core
|
|
|
|
*/
|
|
|
|
void drm_fb_helper_cfb_copyarea(struct fb_info *info,
|
|
|
|
const struct fb_copyarea *area)
|
|
|
|
{
|
|
|
|
cfb_copyarea(info, area);
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(drm_fb_helper_cfb_copyarea);
|
|
|
|
|
|
|
|
/**
|
|
|
|
* drm_fb_helper_cfb_imageblit - wrapper around cfb_imageblit
|
|
|
|
* @info: fbdev registered by the helper
|
|
|
|
* @image: info about image to blit
|
|
|
|
*
|
|
|
|
* A wrapper around cfb_imageblit implemented by fbdev core
|
|
|
|
*/
|
|
|
|
void drm_fb_helper_cfb_imageblit(struct fb_info *info,
|
|
|
|
const struct fb_image *image)
|
|
|
|
{
|
|
|
|
cfb_imageblit(info, image);
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(drm_fb_helper_cfb_imageblit);
|
|
|
|
|
2015-07-31 04:51:43 -06:00
|
|
|
/**
|
|
|
|
* drm_fb_helper_set_suspend - wrapper around fb_set_suspend
|
|
|
|
* @fb_helper: driver-allocated fbdev helper
|
|
|
|
* @state: desired state, zero to resume, non-zero to suspend
|
|
|
|
*
|
|
|
|
* A wrapper around fb_set_suspend implemented by fbdev core
|
|
|
|
*/
|
|
|
|
void drm_fb_helper_set_suspend(struct drm_fb_helper *fb_helper, int state)
|
|
|
|
{
|
|
|
|
if (fb_helper && fb_helper->fbdev)
|
|
|
|
fb_set_suspend(fb_helper->fbdev, state);
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(drm_fb_helper_set_suspend);
|
|
|
|
|
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;
|
2015-03-11 03:51:06 -06:00
|
|
|
const 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;
|
|
|
|
|
2015-07-28 05:18:40 -06:00
|
|
|
if (oops_in_progress)
|
2014-12-15 12:28:26 -07:00
|
|
|
return -EBUSY;
|
2015-07-28 05:18:40 -06:00
|
|
|
|
|
|
|
drm_modeset_lock_all(dev);
|
2013-05-27 11:19:56 -06:00
|
|
|
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++) {
|
|
|
|
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 fb_var_screeninfo *var = &info->var;
|
|
|
|
|
2015-07-28 05:18:40 -06:00
|
|
|
if (oops_in_progress)
|
|
|
|
return -EBUSY;
|
|
|
|
|
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;
|
|
|
|
}
|
|
|
|
|
2014-05-30 10:29:48 -06:00
|
|
|
drm_fb_helper_restore_fbdev_mode_unlocked(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;
|
|
|
|
|
2015-07-28 05:18:40 -06:00
|
|
|
if (oops_in_progress)
|
2014-12-15 12:28:26 -07:00
|
|
|
return -EBUSY;
|
2015-07-28 05:18:40 -06:00
|
|
|
|
|
|
|
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
|
|
|
|
2014-08-06 02:08:32 -06:00
|
|
|
cmdline_mode = &fb_helper_conn->connector->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;
|
2015-03-11 08:23:14 -06:00
|
|
|
struct drm_mode_set *mode_set;
|
|
|
|
int x, y, j;
|
|
|
|
/* in case of tile group, are we the last tile vert or horiz?
|
|
|
|
* If no tile group you are always the last one both vertically
|
|
|
|
* and horizontally
|
|
|
|
*/
|
|
|
|
bool lastv = true, lasth = true;
|
2015-03-11 08:23:13 -06:00
|
|
|
|
2010-03-29 23:34:14 -06:00
|
|
|
desired_mode = fb_helper->crtc_info[i].desired_mode;
|
2015-03-11 08:23:14 -06:00
|
|
|
mode_set = &fb_helper->crtc_info[i].mode_set;
|
2015-03-11 08:23:13 -06:00
|
|
|
|
|
|
|
if (!desired_mode)
|
|
|
|
continue;
|
|
|
|
|
|
|
|
crtc_count++;
|
|
|
|
|
2014-10-20 00:31:53 -06:00
|
|
|
x = fb_helper->crtc_info[i].x;
|
|
|
|
y = fb_helper->crtc_info[i].y;
|
2015-03-11 08:23:13 -06:00
|
|
|
|
|
|
|
if (gamma_size == 0)
|
|
|
|
gamma_size = fb_helper->crtc_info[i].mode_set.crtc->gamma_size;
|
|
|
|
|
|
|
|
sizes.surface_width = max_t(u32, desired_mode->hdisplay + x, sizes.surface_width);
|
|
|
|
sizes.surface_height = max_t(u32, desired_mode->vdisplay + y, sizes.surface_height);
|
2015-03-11 08:23:14 -06:00
|
|
|
|
|
|
|
for (j = 0; j < mode_set->num_connectors; j++) {
|
|
|
|
struct drm_connector *connector = mode_set->connectors[j];
|
|
|
|
if (connector->has_tile) {
|
|
|
|
lasth = (connector->tile_h_loc == (connector->num_h_tile - 1));
|
|
|
|
lastv = (connector->tile_v_loc == (connector->num_v_tile - 1));
|
|
|
|
/* cloning to multiple tiles is just crazy-talk, so: */
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
if (lasth)
|
|
|
|
sizes.fb_width = min_t(u32, desired_mode->hdisplay + x, sizes.fb_width);
|
|
|
|
if (lastv)
|
|
|
|
sizes.fb_height = min_t(u32, desired_mode->vdisplay + y, sizes.fb_height);
|
2009-08-27 23:46:53 -06:00
|
|
|
}
|
|
|
|
|
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
|
|
|
|
|
|
|
if (list_empty(&kernel_fb_helper_list)) {
|
|
|
|
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.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) {
|
2014-01-23 08:27:56 -07:00
|
|
|
if (mode->hdisplay > width ||
|
|
|
|
mode->vdisplay > height)
|
2010-03-29 23:34:13 -06:00
|
|
|
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
|
|
|
{
|
2014-08-06 02:08:32 -06:00
|
|
|
return fb_connector->connector->cmdline_mode.specified;
|
2010-03-29 23:34:13 -06:00
|
|
|
}
|
|
|
|
|
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;
|
2015-03-18 22:33:01 -06:00
|
|
|
struct drm_display_mode *mode;
|
2014-03-19 07:53:13 -06:00
|
|
|
bool prefer_non_interlace;
|
2010-03-29 23:34:13 -06:00
|
|
|
|
2014-08-06 02:08:32 -06:00
|
|
|
cmdline_mode = &fb_helper_conn->connector->cmdline_mode;
|
2010-03-29 23:34:13 -06:00
|
|
|
if (cmdline_mode->specified == false)
|
2015-03-18 22:33:01 -06:00
|
|
|
return NULL;
|
2010-03-29 23:34:13 -06:00
|
|
|
|
|
|
|
/* 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;
|
|
|
|
|
2014-03-19 07:53:13 -06:00
|
|
|
prefer_non_interlace = !cmdline_mode->interlace;
|
2015-03-18 22:33:01 -06:00
|
|
|
again:
|
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;
|
2014-03-19 07:53:13 -06:00
|
|
|
} else if (prefer_non_interlace) {
|
|
|
|
if (mode->flags & DRM_MODE_FLAG_INTERLACE)
|
|
|
|
continue;
|
2010-03-29 23:34:13 -06:00
|
|
|
}
|
|
|
|
return mode;
|
|
|
|
}
|
|
|
|
|
2014-03-19 07:53:13 -06:00
|
|
|
if (prefer_non_interlace) {
|
|
|
|
prefer_non_interlace = false;
|
|
|
|
goto again;
|
|
|
|
}
|
|
|
|
|
2010-03-29 23:34:13 -06:00
|
|
|
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,
|
2014-10-20 00:31:53 -06:00
|
|
|
struct drm_fb_offset *offsets,
|
2010-05-06 23:02:30 -06:00
|
|
|
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;
|
|
|
|
}
|
|
|
|
|
2014-10-20 00:31:53 -06:00
|
|
|
static int drm_get_tile_offsets(struct drm_fb_helper *fb_helper,
|
|
|
|
struct drm_display_mode **modes,
|
|
|
|
struct drm_fb_offset *offsets,
|
|
|
|
int idx,
|
|
|
|
int h_idx, int v_idx)
|
|
|
|
{
|
|
|
|
struct drm_fb_helper_connector *fb_helper_conn;
|
|
|
|
int i;
|
|
|
|
int hoffset = 0, voffset = 0;
|
|
|
|
|
|
|
|
for (i = 0; i < fb_helper->connector_count; i++) {
|
|
|
|
fb_helper_conn = fb_helper->connector_info[i];
|
|
|
|
if (!fb_helper_conn->connector->has_tile)
|
|
|
|
continue;
|
|
|
|
|
|
|
|
if (!modes[i] && (h_idx || v_idx)) {
|
|
|
|
DRM_DEBUG_KMS("no modes for connector tiled %d %d\n", i,
|
|
|
|
fb_helper_conn->connector->base.id);
|
|
|
|
continue;
|
|
|
|
}
|
|
|
|
if (fb_helper_conn->connector->tile_h_loc < h_idx)
|
|
|
|
hoffset += modes[i]->hdisplay;
|
|
|
|
|
|
|
|
if (fb_helper_conn->connector->tile_v_loc < v_idx)
|
|
|
|
voffset += modes[i]->vdisplay;
|
|
|
|
}
|
|
|
|
offsets[idx].x = hoffset;
|
|
|
|
offsets[idx].y = voffset;
|
|
|
|
DRM_DEBUG_KMS("returned %d %d for %d %d\n", hoffset, voffset, h_idx, v_idx);
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
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,
|
2014-10-20 00:31:53 -06:00
|
|
|
struct drm_fb_offset *offsets,
|
2010-03-29 23:34:13 -06:00
|
|
|
bool *enabled, int width, int height)
|
|
|
|
{
|
2010-03-29 23:34:15 -06:00
|
|
|
struct drm_fb_helper_connector *fb_helper_conn;
|
|
|
|
int i;
|
2014-10-20 00:31:53 -06:00
|
|
|
uint64_t conn_configured = 0, mask;
|
|
|
|
int tile_pass = 0;
|
|
|
|
mask = (1 << fb_helper->connector_count) - 1;
|
|
|
|
retry:
|
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
|
|
|
|
2014-10-20 00:31:53 -06:00
|
|
|
if (conn_configured & (1 << i))
|
|
|
|
continue;
|
|
|
|
|
|
|
|
if (enabled[i] == false) {
|
|
|
|
conn_configured |= (1 << i);
|
|
|
|
continue;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* first pass over all the untiled connectors */
|
|
|
|
if (tile_pass == 0 && fb_helper_conn->connector->has_tile)
|
2010-03-29 23:34:13 -06:00
|
|
|
continue;
|
|
|
|
|
2014-10-20 00:31:53 -06:00
|
|
|
if (tile_pass == 1) {
|
|
|
|
if (fb_helper_conn->connector->tile_h_loc != 0 ||
|
|
|
|
fb_helper_conn->connector->tile_v_loc != 0)
|
|
|
|
continue;
|
|
|
|
|
|
|
|
} else {
|
|
|
|
if (fb_helper_conn->connector->tile_h_loc != tile_pass -1 &&
|
|
|
|
fb_helper_conn->connector->tile_v_loc != tile_pass - 1)
|
|
|
|
/* if this tile_pass doesn't cover any of the tiles - keep going */
|
|
|
|
continue;
|
|
|
|
|
|
|
|
/* find the tile offsets for this pass - need
|
|
|
|
to find all tiles left and above */
|
|
|
|
drm_get_tile_offsets(fb_helper, modes, offsets,
|
|
|
|
i, fb_helper_conn->connector->tile_h_loc, fb_helper_conn->connector->tile_v_loc);
|
|
|
|
}
|
2010-03-29 23:34:13 -06:00
|
|
|
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]) {
|
2014-10-20 00:31:53 -06:00
|
|
|
DRM_DEBUG_KMS("looking for preferred mode on connector %d %d\n",
|
|
|
|
fb_helper_conn->connector->base.id, fb_helper_conn->connector->tile_group ? fb_helper_conn->connector->tile_group->id : 0);
|
2010-03-29 23:34:15 -06:00
|
|
|
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");
|
2014-10-20 00:31:53 -06:00
|
|
|
conn_configured |= (1 << i);
|
|
|
|
}
|
|
|
|
|
|
|
|
if ((conn_configured & mask) != mask) {
|
|
|
|
tile_pass++;
|
|
|
|
goto retry;
|
2010-03-29 23:34:13 -06:00
|
|
|
}
|
|
|
|
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;
|
2015-03-11 03:51:06 -06:00
|
|
|
const struct drm_connector_helper_funcs *connector_funcs;
|
2010-03-29 23:34:13 -06:00
|
|
|
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;
|
2014-10-20 00:31:53 -06:00
|
|
|
struct drm_fb_offset *offsets;
|
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);
|
2014-10-20 00:31:53 -06:00
|
|
|
offsets = kcalloc(dev->mode_config.num_connector,
|
|
|
|
sizeof(struct drm_fb_offset), GFP_KERNEL);
|
2010-03-29 23:34:13 -06:00
|
|
|
enabled = kcalloc(dev->mode_config.num_connector,
|
|
|
|
sizeof(bool), GFP_KERNEL);
|
2014-10-20 00:31:53 -06:00
|
|
|
if (!crtcs || !modes || !enabled || !offsets) {
|
2012-11-19 02:44:58 -07:00
|
|
|
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,
|
2014-10-20 00:31:53 -06:00
|
|
|
offsets,
|
2013-02-19 14:31:39 -07:00
|
|
|
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]));
|
2014-10-20 00:31:53 -06:00
|
|
|
memset(offsets, 0, dev->mode_config.num_connector*sizeof(offsets[0]));
|
2013-02-19 14:31:39 -07:00
|
|
|
|
2014-10-20 00:31:53 -06:00
|
|
|
if (!drm_target_cloned(fb_helper, modes, offsets,
|
|
|
|
enabled, width, height) &&
|
|
|
|
!drm_target_preferred(fb_helper, modes, offsets,
|
|
|
|
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];
|
2014-10-20 00:31:53 -06:00
|
|
|
struct drm_fb_offset *offset = &offsets[i];
|
2010-03-29 23:34:14 -06:00
|
|
|
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) {
|
2014-10-20 00:31:53 -06:00
|
|
|
DRM_DEBUG_KMS("desired mode %s set on crtc %d (%d,%d)\n",
|
|
|
|
mode->name, fb_crtc->mode_set.crtc->base.id, offset->x, offset->y);
|
2010-03-29 23:34:14 -06:00
|
|
|
fb_crtc->desired_mode = mode;
|
2014-10-20 00:31:53 -06:00
|
|
|
fb_crtc->x = offset->x;
|
|
|
|
fb_crtc->y = offset->y;
|
2010-03-29 23:34:14 -06:00
|
|
|
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;
|
2014-10-20 00:31:53 -06:00
|
|
|
modeset->x = offset->x;
|
|
|
|
modeset->y = offset->y;
|
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);
|
|
|
|
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);
|
2014-10-20 00:31:53 -06:00
|
|
|
kfree(offsets);
|
2010-03-29 23:34:13 -06:00
|
|
|
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.
|
|
|
|
*/
|
2014-12-19 03:21:32 -07:00
|
|
|
int 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;
|
|
|
|
|
2014-03-20 07:26:35 -06:00
|
|
|
mutex_lock(&dev->mode_config.mutex);
|
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);
|
2014-03-20 07:26:35 -06:00
|
|
|
mutex_unlock(&dev->mode_config.mutex);
|
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).
|
|
|
|
*
|
2014-06-27 09:19:22 -06:00
|
|
|
* Note that drivers may call this even before calling
|
|
|
|
* drm_fb_helper_initial_config but only aftert drm_fb_helper_init. This allows
|
|
|
|
* for a race-free fbcon setup and will make sure that the fbdev emulation will
|
|
|
|
* not miss any hotplug events.
|
2013-01-20 14:13:14 -07:00
|
|
|
*
|
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
|
|
|
|
2013-04-11 08:26:55 -06:00
|
|
|
mutex_lock(&fb_helper->dev->mode_config.mutex);
|
2014-06-27 09:19:22 -06:00
|
|
|
if (!fb_helper->fb || !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
|