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author | Dave Airlie <airlied@redhat.com> | 2017-03-07 13:59:53 +1000 |
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committer | Dave Airlie <airlied@redhat.com> | 2017-03-07 13:59:53 +1000 |
commit | b558dfd56a5c1f915327967ecfe1181cf2a7a494 (patch) | |
tree | 28ed2b90b5d362eaf535b725a3f560eb645892f0 /drivers/of/platform.c | |
parent | c1ae3cfa0e89fa1a7ecc4c99031f5e9ae99d9201 (diff) | |
parent | ca39b449f6d03e8235969f12f5dd25b8eb4304d6 (diff) |
Merge tag 'drm-misc-next-2017-03-06' of git://anongit.freedesktop.org/git/drm-misc into drm-next
First slice of drm-misc-next for 4.12:
Core/subsystem-wide:
- link status core patch from Manasi, for signalling link train fail
to userspace. I also had the i915 patch in here, but that had a
small buglet in our CI, so reverted.
- more debugfs_remove removal from Noralf, almost there now (Noralf
said he'll try to follow up with the stragglers).
- drm todo moved into kerneldoc, for better visibility (see
Documentation/gpu/todo.rst), lots of starter tasks in there.
- devm_ of helpers + use it in sti (from Ben Gaignard, acked by Rob
Herring)
- extended framebuffer fbdev support (for fbdev flipping), and vblank
wait ioctl fbdev support (Maxime Ripard)
- misc small things all over, as usual
- add vblank callbacks to drm_crtc_funcs, plus make lots of good use
of this to simplify drivers (Shawn Guo)
- new atomic iterator macros to unconfuse old vs. new state
Small drivers:
- vc4 improvements from Eric
- vc4 kerneldocs (Eric)!
- tons of improvements for dw-mipi-dsi in rockchip from John Keeping
and Chris Zhong.
- MAINTAINERS entries for drivers managed in drm-misc. It's not yet
official, still an experiment, but definitely not complete fail and
better to avoid confusion. We kinda screwed that up with drm-misc a
bit when we started committers last year.
- qxl atomic conversion (Gabriel Krisman)
- bunch of virtual driver polish (qxl, virgl, ...)
- misc tiny patches all over
This is the first time we've done the same merge-window blackout for
drm-misc as we've done for drm-intel for ages, hence why we have a
_lot_ of stuff queued already. But it's still only half of drm-intel
(room to grow!), and the drivers in drm-misc experiment seems to work
at least insofar as that you also get lots of driver updates here
alredy.
* tag 'drm-misc-next-2017-03-06' of git://anongit.freedesktop.org/git/drm-misc: (141 commits)
drm/vc4: Fix OOPSes from trying to cache a partially constructed BO.
drm/vc4: Fulfill user BO creation requests from the kernel BO cache.
Revert "drm/i915: Implement Link Rate fallback on Link training failure"
drm/fb-helper: implement ioctl FBIO_WAITFORVSYNC
drm: Update drm_fbdev_cma_init documentation
drm/rockchip/dsi: add dw-mipi power domain support
drm/rockchip/dsi: fix insufficient bandwidth of some panel
dt-bindings: add power domain node for dw-mipi-rockchip
drm/rockchip/dsi: remove mode_valid function
drm/rockchip/dsi: dw-mipi: correct the coding style
drm/rockchip/dsi: dw-mipi: support RK3399 mipi dsi
dt-bindings: add rk3399 support for dw-mipi-rockchip
drm/rockchip: dw-mipi-dsi: add reset control
drm/rockchip: dw-mipi-dsi: support non-burst modes
drm/rockchip: dw-mipi-dsi: defer probe if panel is not loaded
drm/rockchip: vop: test for P{H,V}SYNC
drm/rockchip: dw-mipi-dsi: use positive check for N{H, V}SYNC
drm/rockchip: dw-mipi-dsi: use specific poll helper
drm/rockchip: dw-mipi-dsi: improve PLL configuration
drm/rockchip: dw-mipi-dsi: properly configure PHY timing
...
Diffstat (limited to 'drivers/of/platform.c')
-rw-r--r-- | drivers/of/platform.c | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/drivers/of/platform.c b/drivers/of/platform.c index 5dfcc967dd05..45b413e5a444 100644 --- a/drivers/of/platform.c +++ b/drivers/of/platform.c @@ -571,6 +571,77 @@ void of_platform_depopulate(struct device *parent) } EXPORT_SYMBOL_GPL(of_platform_depopulate); +static void devm_of_platform_populate_release(struct device *dev, void *res) +{ + of_platform_depopulate(*(struct device **)res); +} + +/** + * devm_of_platform_populate() - Populate platform_devices from device tree data + * @dev: device that requested to populate from device tree data + * + * Similar to of_platform_populate(), but will automatically call + * of_platform_depopulate() when the device is unbound from the bus. + * + * Returns 0 on success, < 0 on failure. + */ +int devm_of_platform_populate(struct device *dev) +{ + struct device **ptr; + int ret; + + if (!dev) + return -EINVAL; + + ptr = devres_alloc(devm_of_platform_populate_release, + sizeof(*ptr), GFP_KERNEL); + if (!ptr) + return -ENOMEM; + + ret = of_platform_populate(dev->of_node, NULL, NULL, dev); + if (ret) { + devres_free(ptr); + } else { + *ptr = dev; + devres_add(dev, ptr); + } + + return ret; +} +EXPORT_SYMBOL_GPL(devm_of_platform_populate); + +static int devm_of_platform_match(struct device *dev, void *res, void *data) +{ + struct device **ptr = res; + + if (!ptr) { + WARN_ON(!ptr); + return 0; + } + + return *ptr == data; +} + +/** + * devm_of_platform_depopulate() - Remove devices populated from device tree + * @dev: device that requested to depopulate from device tree data + * + * Complementary to devm_of_platform_populate(), this function removes children + * of the given device (and, recurrently, their children) that have been + * created from their respective device tree nodes (and only those, + * leaving others - eg. manually created - unharmed). + */ +void devm_of_platform_depopulate(struct device *dev) +{ + int ret; + + ret = devres_release(dev, devm_of_platform_populate_release, + devm_of_platform_match, dev); + + WARN_ON(ret); +} +EXPORT_SYMBOL_GPL(devm_of_platform_depopulate); + #ifdef CONFIG_OF_DYNAMIC static int of_platform_notify(struct notifier_block *nb, unsigned long action, void *arg) |