linux-stable.git/drivers/gpu/drm/drm_sysfs.c, branch linux-3.19.y

drm: Move piles of functions from drmP.h to drm_internal.h

2014-09-12T09:16:29+00:00

This way drivers can't grow crazy ideas any more, and it also
helps a bit in reviewing EXPORT_SYMBOLS.

v2: Even more stuff. Unfortunately we can't move drm_vm_open_locked
because exynos does some horrible stuff with it.

Signed-off-by: Daniel Vetter

drm: make sysfs device always available for minors

2014-08-05T14:08:21+00:00

For each minor we allocate a sysfs device as minor->kdev. Currently, this
is allocated and registered in drm_minor_register(). This makes it
impossible to add sysfs-attributes to the device before it is registered.
Therefore, they are not added atomically, nor can we move device_add()
*after* ->load() is called.

This patch makes minor->kdev available early, but only adds the device
during minor-registration. Note that the registration is still called
before ->load() as debugfs needs to be split, too. This will be fixed in
follow-ups.

Reviewed-by: Daniel Vetter 
Reviewed-by: Alex Deucher 
Signed-off-by: David Herrmann

drm: add register and unregister functions for connectors

2014-06-19T06:55:28+00:00

Introduce generic functions to register and unregister connectors. This
provides a common place to add and remove associated user space
interfaces.

Signed-off-by: Thomas Wood 
Reviewed-by: David Herrmann 
Signed-off-by: Daniel Vetter

drm: replace drm_get_connector_name() with direct name field use

2014-06-04T03:17:41+00:00

Generated using semantic patch:

@@
expression E;
@@

- drm_get_connector_name(E)
+ E->name

[airlied: regenerated]

Acked-by: David Herrmann 
Signed-off-by: Jani Nikula 
Signed-off-by: Dave Airlie

drm/sysfs: fix OOM verification

2013-11-28T04:35:23+00:00

Copy/Paste typo.. we need to test for ->kdev instead of ->dev.

Reported-by: Juha Leppänen 
Signed-off-by: David Herrmann 
Signed-off-by: Dave Airlie

drm/sysfs: fix hotplug regression since lifetime changes

2013-11-21T11:10:00+00:00

airlied:
The lifetime changes introduced in 5bdebb183c9702a8c57a01dff09337be3de337a6
tried to use device_create, however that led to the regression where dev->type
wasn't getting set correctly. First attempt at fixing it would have led to
a race, so this undoes the device_createa work and does it all manually
making sure the dev->type is setup before we register the device.

Signed-off-by: David Herrmann 
Signed-off-by: Dave Airlie

drm/sysfs: Remove stale comments about calling drm_sysfs_connector_add() multiple times

2013-11-06T03:41:37+00:00

drm_connector_sysfs_add() explicitly checks if connector->kdev
is already populated and returns success. So it clearly now allows
being called multiple times. Remove some stale comments to the contrary.

Signed-off-by: Ville Syrjälä 
Reviewed-by: Jani Nikula 
Signed-off-by: Dave Airlie

drm/sysfs: Do not drop device reference twice

2013-10-30T20:33:49+00:00

device_unregister() already drops its reference to the struct device, so
explicitly calling put_device() before device_unregister() can cause the
device to have been freed before it can be unregistered.

Signed-off-by: Thierry Reding 
Reviewed-by: Paulo Zanoni 
Tested-by: Paulo Zanoni 
Tested-by: Ben Widawsky 
Signed-off-by: Dave Airlie

drm/sysfs: sort out minor and connector device object lifetimes.

2013-10-22T08:37:40+00:00

So drm was abusing device lifetimes, by having embedded device structures
in the minor and connector it meant that the lifetime of the internal drm
objects (drm_minor and drm_connector) were tied to the lifetime of the device
files in sysfs, so if something kept those files opened the current code
would kfree the objects and things would go downhill from there.

Now in reality there is no need for these lifetimes to be so intertwined,
especailly with hotplugging of devices where we wish to remove the sysfs
and userspace facing pieces before we can unwind the internal objects due
to open userspace files or mmaps, so split the objects out so the struct
device is no longer embedded and do what fbdev does and just allocate
and remove the sysfs inodes separately.

Signed-off-by: Dave Airlie

drm: Convert drm class driver from legacy pm ops to dev_pm_ops

2013-07-04T00:50:26+00:00

Convert drivers/gpu/drm class to use dev_pm_ops for power management and
remove Legacy PM ops hooks. With this change, drm class registers
suspend/resume callbacks via class->pm (dev_pm_ops) instead of Legacy
class->suspend/resume. When __device_suspend() runs call-backs, it will
find class->pm ops for the drm class.

drm_class_suspend() hook calls driver legacy ops with the state information.
e.g: drm_class_suspend() calls into driver suspend routines
via drm_dev->driver->suspend(drm_dev, state).

Once drm_class_suspend() is converted to dev_pm_ops, it will no longer
have access to pm_transition which it has to pass into driver legacy
suspend calls. A new freeze and suspend hooks are added to address the not
having access to the state information. The new freeze and suspend hooks
simply call __drm_class_suspend() with the appropriate pm state information.
__drm_class_suspend() is the original suspend hook with a new name.

Signed-off-by: Shuah Khan 
Signed-off-by: Dave Airlie