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Commit 34ea3d386347 ("drm: add register and unregister functions
for connectors") probably missed out converting the
drm_sysfs_connector_remove instances in the following files.
Without this patch we get the following compilation error:
ERROR: "drm_sysfs_connector_remove" [drivers/gpu/drm/tilcdc/tilcdc.ko] undefined!
Signed-off-by: Sachin Kamat <[email protected]>
CC: Thomas Wood <[email protected]>
CC: David Herrmann <[email protected]>
CC: Daniel Vetter <[email protected]>
Signed-off-by: Dave Airlie <[email protected]>
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The TI tilcdc driver is designed with a notion of submodules. Currently,
at unload time, these submodules are iterated and destroyed.
Now that the tilcdc remove order is fixed, this can be handled perfectly
by the kernel using the device infrastructure, since each submodule
is a kernel driver itself, and they are only destroy()'ed at unload
time. Therefore we move the destroy() functionality to each submodule's
remove().
Also, remove some checks in the unloading process since the new code
guarantees the resources are allocated and need a release.
Signed-off-by: Guido Martínez <[email protected]>
Tested-by: Darren Etheridge <[email protected]>
Signed-off-by: Dave Airlie <[email protected]>
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display_timings_release calls kfree on the display_timings object passed
to it. Calling kfree after it is wrong. SLUB debug showed the following
warning:
=============================================================================
BUG kmalloc-64 (Tainted: G W ): Object already free
-----------------------------------------------------------------------------
Disabling lock debugging due to kernel taint
INFO: Allocated in of_get_display_timings+0x2c/0x214 age=601 cpu=0
pid=884
__slab_alloc.constprop.79+0x2e0/0x33c
kmem_cache_alloc+0xac/0xdc
of_get_display_timings+0x2c/0x214
panel_probe+0x7c/0x314 [tilcdc]
platform_drv_probe+0x18/0x48
[..snip..]
INFO: Freed in panel_destroy+0x18/0x3c [tilcdc] age=0 cpu=0 pid=907
__slab_free+0x34/0x330
panel_destroy+0x18/0x3c [tilcdc]
tilcdc_unload+0xd0/0x118 [tilcdc]
drm_dev_unregister+0x24/0x98
[..snip..]
Signed-off-by: Guido Martínez <[email protected]>
Tested-by: Darren Etheridge <[email protected]>
Cc: <[email protected]> #v3.9+
Signed-off-by: Dave Airlie <[email protected]>
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Add a drm_sysfs_connector_remove call when we destroy the panel to make
sure the connector node in sysfs gets deleted.
This is required for proper unload and re-load of this driver as a
module. Without this, we would get a warning at re-load time like so:
------------[ cut here ]------------
WARNING: CPU: 0 PID: 824 at fs/sysfs/dir.c:31 sysfs_warn_dup+0x54/0x74()
sysfs: cannot create duplicate filename '/class/drm/card0-LVDS-1'
Modules linked in: [...]
CPU: 0 PID: 824 Comm: modprobe Not tainted 3.15.0-rc4-00027-g6484f96-dirty #81
[<c0013bb8>] (unwind_backtrace) from [<c0011824>] (show_stack+0x10/0x14)
[<c0011824>] (show_stack) from [<c0034e8c>] (warn_slowpath_common+0x68/0x88)
[<c0034e8c>] (warn_slowpath_common) from [<c0034edc>] (warn_slowpath_fmt+0x30/0x40)
[<c0034edc>] (warn_slowpath_fmt) from [<c01243f4>] (sysfs_warn_dup+0x54/0x74)
[<c01243f4>] (sysfs_warn_dup) from [<c0124708>] (sysfs_do_create_link_sd.isra.2+0xb0/0xb8)
[<c0124708>] (sysfs_do_create_link_sd.isra.2) from [<c02ae37c>] (device_add+0x338/0x520)
[<c02ae37c>] (device_add) from [<c02ae6e8>] (device_create_groups_vargs+0xa0/0xc4)
[<c02ae6e8>] (device_create_groups_vargs) from [<c02ae758>] (device_create+0x24/0x2c)
[<c02ae758>] (device_create) from [<c029b4ec>] (drm_sysfs_connector_add+0x64/0x204)
[<c029b4ec>] (drm_sysfs_connector_add) from [<bf0b1fec>] (panel_modeset_init+0xb8/0x134 [tilcdc])
[<bf0b1fec>] (panel_modeset_init [tilcdc]) from [<bf0b2bf0>] (tilcdc_load+0x214/0x4c0 [tilcdc])
[<bf0b2bf0>] (tilcdc_load [tilcdc]) from [<c029955c>] (drm_dev_register+0xa4/0x104)
[ .. snip .. ]
---[ end trace b2d09cd9578b0497 ]---
[drm:drm_sysfs_connector_add] *ERROR* failed to register connector device: -17
Signed-off-by: Guido Martínez <[email protected]>
Tested-by: Darren Etheridge <[email protected]>
Cc: <[email protected]> #v3.9+
Signed-off-by: Dave Airlie <[email protected]>
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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 <[email protected]>
Reviewed-by: David Herrmann <[email protected]>
Signed-off-by: Daniel Vetter <[email protected]>
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The preferred_bpp value in currently hard-coded to 16.
This causes color corruption on the am335x-evm lcd panel which
requires 32 bpp instead. This changes attempts to use the configured
bpp value from the DT or built-in panel-info struct.
Signed-off-by: Benoit Parrot <[email protected]>
Acked-by: Rob Clark <[email protected]>
Signed-off-by: Dave Airlie <[email protected]>
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Pull drm updates from Dave Airlie:
"This is the main drm pull request for 3.10.
Wierd bits:
- OMAP drm changes required OMAP dss changes, in drivers/video, so I
took them in here.
- one more fbcon fix for font handover
- VT switch avoidance in pm code
- scatterlist helpers for gpu drivers - have acks from akpm
Highlights:
- qxl kms driver - driver for the spice qxl virtual GPU
Nouveau:
- fermi/kepler VRAM compression
- GK110/nvf0 modesetting support.
Tegra:
- host1x core merged with 2D engine support
i915:
- vt switchless resume
- more valleyview support
- vblank fixes
- modesetting pipe config rework
radeon:
- UVD engine support
- SI chip tiling support
- GPU registers initialisation from golden values.
exynos:
- device tree changes
- fimc block support
Otherwise:
- bunches of fixes all over the place."
* 'drm-next' of git://people.freedesktop.org/~airlied/linux: (513 commits)
qxl: update to new idr interfaces.
drm/nouveau: fix build with nv50->nvc0
drm/radeon: fix handling of v6 power tables
drm/radeon: clarify family checks in pm table parsing
drm/radeon: consolidate UVD clock programming
drm/radeon: fix UPLL_REF_DIV_MASK definition
radeon: add bo tracking debugfs
drm/radeon: add new richland pci ids
drm/radeon: add some new SI PCI ids
drm/radeon: fix scratch reg handling for UVD fence
drm/radeon: allocate SA bo in the requested domain
drm/radeon: fix possible segfault when parsing pm tables
drm/radeon: fix endian bugs in atom_allocate_fb_scratch()
OMAPDSS: TFP410: return EPROBE_DEFER if the i2c adapter not found
OMAPDSS: VENC: Add error handling for venc_probe_pdata
OMAPDSS: HDMI: Add error handling for hdmi_probe_pdata
OMAPDSS: RFBI: Add error handling for rfbi_probe_pdata
OMAPDSS: DSI: Add error handling for dsi_probe_pdata
OMAPDSS: SDI: Add error handling for sdi_probe_pdata
OMAPDSS: DPI: Add error handling for dpi_probe_pdata
...
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The tilcdc driver fails to be built as a module because of extraneous
MODULE_DEVICE_TABLE entries:
drivers/gpu/drm/tilcdc/tilcdc_slave.o:(.data+0x54): multiple definition of `__mod_of_device_table'
drivers/gpu/drm/tilcdc/tilcdc_tfp410.o:(.data+0x54): first defined here
drivers/gpu/drm/tilcdc/tilcdc_panel.o:(.data+0x54): multiple definition of `__mod_of_device_table'
drivers/gpu/drm/tilcdc/tilcdc_tfp410.o:(.data+0x54): first defined here
drivers/gpu/drm/tilcdc/tilcdc_drv.o:(.data+0x184): multiple definition of `__mod_of_device_table'
drivers/gpu/drm/tilcdc/tilcdc_tfp410.o:(.data+0x54): first defined here
Since the entire point of these entries is to make the module autoload
when one of the devices is present, it's enough to keep the one entry
for "ti,am33xx-tilcdc", which should always be there if any of the
others are.
Acked-by: Rob Clark <[email protected]>
Cc: [email protected]
Signed-off-by: Arnd Bergmann <[email protected]>
Signed-off-by: Dave Airlie <[email protected]>
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Fixes the following checkpatch error:
ERROR: "foo * bar" should be "foo *bar"
Signed-off-by: Sachin Kamat <[email protected]>
Acked-by: Rob Clark <[email protected]>
Signed-off-by: Dave Airlie <[email protected]>
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We currently have videomode_from_timing(), which takes one
display_timing entry from display_timings.
To make it easier to use display_timing without display_timings, this
patch renames videomode_from_timing() to videomode_from_timings(), and
adds a new videomode_from_timing() which just converts a given
display_timing to videomode.
Signed-off-by: Tomi Valkeinen <[email protected]>
Cc: Steffen Trumtrar <[email protected]>
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Add an output panel driver for LCD panels. Tested with LCD3 cape on
beaglebone.
v1: original
v2: s/of_find_node_by_name()/of_get_child_by_name()/ from Pantelis
Antoniou
v3: add backlight support
v4: rebase to latest of video timing helpers
v5: remove some unneeded fields from panel-info struct, add DT bindings
docs
Signed-off-by: Rob Clark <[email protected]>
Tested-by: Koen Kooi <[email protected]>
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