Commit Graph

85 Commits

Author SHA1 Message Date
Andrzej Hajda 3cb6830a75 drm/exynos: init kms poll at the end of initialization
HPD events can be generated by components even if drm_dev is not fully
initialized, to skip such events kms poll initialization should
be performed at the end of load callback followed directly by forced
connection detection.

Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-11-03 01:51:28 +09:00
Andrzej Hajda 64f7aed83d drm/exynos: propagate plane initialization errors
In case of error during plane initialization load callback
incorrectly return success, this patch fixes it.

Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-11-03 01:51:28 +09:00
Andrzej Hajda c52142e6a8 drm/exynos: init vblank with real number of crtcs
Initialization of vblank with MAX_CRTC caused attempts
to disabling vblanks for non-existing crtcs in case
drm used fewer crtcs. The patch fixes it.

Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-11-03 01:51:27 +09:00
Andrzej Hajda 72ed6ccd08 drm/exynos: switch to universal plane API
The patch replaces legacy functions
drm_plane_init() / drm_crtc_init() with
drm_universal_plane_init() and drm_crtc_init_with_planes().
It allows to replace fake primary plane with the real one.
Additionally the patch leaves cleanup of crtcs to core,
this way planes and crtcs are cleaned in correct order.

Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-09-20 01:17:53 +09:00
Inki Dae 832316c704 drm/exynos: use drm generic mmap interface
This patch removes DRM_EXYNOS_GEM_MMAP ictrl feature specific
to Exynos drm and instead uses drm generic mmap.

We had used the interface specific to Exynos drm to do mmap directly,
not to use demand paging which maps each page with physical memory
at page fault handler. We don't need the specific mmap interface
because the drm generic mmap which uses vm offset manager stuff can
also do mmap directly.

This patch makes a userspace region to be mapped with whole physical
memory region allocated by userspace request when mmap system call is
requested.

Changelog v2:
- do not set VM_IO, VM_DONTEXPEND and VM_DONTDUMP. These flags were already
  set by drm_gem_mmap
- do not include <linux/anon_inodes.h>, which isn't needed anymore.

Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-09-20 01:00:13 +09:00
Inki Dae d931589c01 drm/exynos: remove DRM_EXYNOS_GEM_MAP_OFFSET ioctl
This interface and relevant codes aren't used anymore.

Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-09-20 01:00:07 +09:00
Joonyoung Shim 4a3ffedda2 drm/exynos: factor out initial setting of each driver
From fimd driver and vidi driver, dev->irq_enabled and
dev->vblank_disable_allowed are set and also mixer needs them even if
missed. It's duplicated so set them when loads drm driver.

Signed-off-by: Joonyoung Shim <jy0922.shim@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-09-20 00:56:39 +09:00
Andrzej Hajda 9f3dd7dbc5 drm/exynos: fix drm driver de-initialization order
Since components have their own cleanup routines calling
drm_mode_config_cleanup before component_unbind_all causes errors
due to double free of KMS objects. The patch fixes it by changing
de-initialization order. Now it is exactly opposite to init order.

Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-09-20 00:56:14 +09:00
Inki Dae 53c5558d95 drm/exynos: update to use component match support
Update Exynos's DRM driver to use component match support rater than
add_components.

Changelog v2:
- release devices and drivers if failed.
- change compare_of to compare_dev.

Signed-off-by: Inki Dae <inki.dae@samsung.com>
Tested-by: Andrzej Hajda <a.hajda@samsung.com>
2014-09-20 00:56:13 +09:00
David Herrmann 915b4d11b8 drm: add driver->set_busid() callback
One step closer to dropping all the drm_bus_* code:
Add a driver->set_busid() callback and make all drivers use the generic
helpers. Nouveau is the only driver that uses two different bus-types with
the same drm_driver. This is totally broken if both buses are available on
the same machine (unlikely, but lets be safe). Therefore, we create two
different drivers for each platform during module_init() and set the
set_busid() callback respectively.

Signed-off-by: David Herrmann <dh.herrmann@gmail.com>
Reviewed-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2014-09-10 17:43:04 +10:00
Krzysztof Kozlowski d50a1907a3 drm/exynos: Fix NULL pointer exception when suspending without components
Fix a NULL pointer exception when main exynos drm driver was probed
successfully but no components were added (e.g. by incomplete DTS). In
such case the exynos_drm_load() is never called and drvdata is NULL.

The NULL pointer exception may theoretically also happen as a effect of race between
adding components and main driver: if suspend of the driver happens
before adding components.

Trace:
[    1.190295] [drm] Initialized drm 1.1.0 20060810
[    1.195209] exynos-drm-ipp exynos-drm-ipp: drm ipp registered successfully.
(...)
[   24.001743] PM: Syncing filesystems ... done.
[   24.002177] Freezing user space processes ... (elapsed 0.000 seconds) done.
[   24.007403] Freezing remaining freezable tasks ... (elapsed 0.001 seconds) done.
[   24.032559] Unable to handle kernel NULL pointer dereference at virtual address 00000134
[   24.035007] pgd = dedd8000
[   24.037734] [00000134] *pgd=5ee13831, *pte=00000000, *ppte=00000000
[   24.043953] Internal error: Oops: 17 [#1] PREEMPT SMP ARM
[   24.049329] Modules linked in:
[   24.052371] CPU: 0 PID: 1 Comm: sh Not tainted 3.16.0-rc3-00035-geba20bbdde04-dirty #51
[   24.060354] task: df478000 ti: df480000 task.ti: df480000
[   24.065743] PC is at mutex_lock+0x10/0x50
[   24.069733] LR is at drm_modeset_lock_all+0x30/0xbc
[   24.074590] pc : [<c048516c>]    lr : [<c02a14b4>]    psr: a0000013
[   24.074590] sp : df481db8  ip : 00000000  fp : c05e524c
[   24.086045] r10: 00000002  r9 : c02c1fe4  r8 : deca5e44
[   24.091253] r7 : 00000000  r6 : 00000000  r5 : 0000014c  r4 : 00000134
[   24.097763] r3 : 00000000  r2 : 00000000  r1 : 00000000  r0 : 00000134
[   24.104275] Flags: NzCv  IRQs on  FIQs on  Mode SVC_32  ISA ARM  Segment user
[   24.111391] Control: 10c53c7d  Table: 5edd806a  DAC: 00000015
[   24.117120] Process sh (pid: 1, stack limit = 0xdf480240)
[   24.122502] Stack: (0xdf481db8 to 0xdf482000)
[   24.126843] 1da0:                                                       dee01d80 c02a14b4
[   24.135004] 1dc0: 00000000 00000000 c07aff98 c02aec7c 00000002 00000000 00000000 c07aff98
[   24.143164] 1de0: deca5e10 c02aecf4 c02aecd4 c02c2010 00000000 c02c9470 00000000 00000000
[   24.151322] 1e00: 00000000 00000000 deca5e10 deca5e10 00000000 c07aff98 00000002 deca5e44
[   24.159482] 1e20: c06d8f78 c06fb800 deca5e78 c02ca660 df7baf00 007b0aa0 deca5e10 c06fb7c8
[   24.167641] 1e40: c07aff98 00000000 00000002 c02cbe18 9757aec5 00000005 9757aec5 00000005
[   24.175801] 1e60: ded1d380 00000003 00000003 c05c74d8 ded1d380 c07209d4 c05c7514 c07105d8
[   24.183960] 1e80: 01e2a738 c0068a74 00000000 c05c7514 ded1d380 c071c6e0 00000004 c07105d8
[   24.192119] 1ea0: 01e2a738 c047f1e0 c0600cc0 df481ec4 00000003 00000000 00000003 c05c74d8
[   24.200278] 1ec0: ded1d380 c071c6e0 c05c7514 c07105d8 01e2a738 c0069444 c06d905c 00000003
[   24.208438] 1ee0: 00000003 ded1d380 c06d9064 00000004 c05c3fc0 c0067d4c df535ab0 ded1d380
[   24.216596] 1f00: df481f80 ded1d380 00000004 ded1d1cc ded1d1c0 c0221724 00000004 c016ca6c
[   24.224756] 1f20: c016ca28 00000000 00000000 c016c1d4 00000000 00000000 b6f37000 df481f80
[   24.232915] 1f40: decedd80 00000004 df480000 df480000 b6f37000 c0110920 df47839c 60000013
[   24.241074] 1f60: 00000000 00000000 decedd80 decedd80 00000004 df480000 b6f37000 c0110da8
[   24.249233] 1f80: 00000000 00000000 00000004 b6edf5d8 00000004 b6f37000 00000004 c000f2a8
[   24.257393] 1fa0: 00001000 c000f0e0 b6edf5d8 00000004 00000001 b6f37000 00000004 00000000
[   24.265551] 1fc0: b6edf5d8 00000004 b6f37000 00000004 00000004 00000001 00000000 01e2a738
[   24.273711] 1fe0: 00000000 beba0a20 b6e1f4f0 b6e7022c 60000010 00000001 ffffffff ffffffff
[   24.281885] [<c048516c>] (mutex_lock) from [<c02a14b4>] (drm_modeset_lock_all+0x30/0xbc)
[   24.289950] [<c02a14b4>] (drm_modeset_lock_all) from [<c02aec7c>] (exynos_drm_suspend+0xc/0x64)
[   24.298627] [<c02aec7c>] (exynos_drm_suspend) from [<c02aecf4>] (exynos_drm_sys_suspend+0x20/0x34)
[   24.307568] [<c02aecf4>] (exynos_drm_sys_suspend) from [<c02c2010>] (platform_pm_suspend+0x2c/0x54)
[   24.316597] [<c02c2010>] (platform_pm_suspend) from [<c02c9470>] (dpm_run_callback+0x48/0x170)
[   24.325188] [<c02c9470>] (dpm_run_callback) from [<c02ca660>] (__device_suspend+0x128/0x39c)
[   24.333606] [<c02ca660>] (__device_suspend) from [<c02cbe18>] (dpm_suspend+0x5c/0x314)
[   24.341506] [<c02cbe18>] (dpm_suspend) from [<c0068a74>] (suspend_devices_and_enter+0x8c/0x598)
[   24.350185] [<c0068a74>] (suspend_devices_and_enter) from [<c0069444>] (pm_suspend+0x4c4/0x5d0)
[   24.358862] [<c0069444>] (pm_suspend) from [<c0067d4c>] (state_store+0x70/0xd4)
[   24.366156] [<c0067d4c>] (state_store) from [<c0221724>] (kobj_attr_store+0x14/0x20)
[   24.373885] [<c0221724>] (kobj_attr_store) from [<c016ca6c>] (sysfs_kf_write+0x44/0x48)
[   24.381867] [<c016ca6c>] (sysfs_kf_write) from [<c016c1d4>] (kernfs_fop_write+0xc0/0x17c)
[   24.390027] [<c016c1d4>] (kernfs_fop_write) from [<c0110920>] (vfs_write+0xa0/0x1c4)
[   24.397750] [<c0110920>] (vfs_write) from [<c0110da8>] (SyS_write+0x40/0x8c)
[   24.404782] [<c0110da8>] (SyS_write) from [<c000f0e0>] (ret_fast_syscall+0x0/0x3c)
[   24.412332] Code: e92d4010 e1a04000 f57ff05b f590f000 (e1903f9f)
[   24.418448] ---[ end trace cfa06690eabe8dd5 ]---
[   24.423032] Kernel panic - not syncing: Fatal exception
[   24.428220] CPU1: stopping
[   24.430905] CPU: 1 PID: 0 Comm: swapper/1 Tainted: G      D       3.16.0-rc3-00035-geba20bbdde04-dirty #51
[   24.440549] [<c0016440>] (unwind_backtrace) from [<c001294c>] (show_stack+0x10/0x14)
[   24.448269] [<c001294c>] (show_stack) from [<c04811e8>] (dump_stack+0x80/0xcc)
[   24.455472] [<c04811e8>] (dump_stack) from [<c001495c>] (handle_IPI+0x130/0x15c)
[   24.462850] [<c001495c>] (handle_IPI) from [<c000862c>] (gic_handle_irq+0x60/0x68)
[   24.470400] [<c000862c>] (gic_handle_irq) from [<c0013440>] (__irq_svc+0x40/0x70)
[   24.477860] Exception stack(0xdf4bdf88 to 0xdf4bdfd0)
[   24.482898] df80:                   ffffffed 00000000 00000000 00000000 df4bc000 c06d042c
[   24.491058] dfa0: 00000000 ffffffed c06d03c0 00000000 c070c288 00000000 00000000 df4bdfd0
[   24.499214] dfc0: c0010324 c0010328 60000013 ffffffff
[   24.504254] [<c0013440>] (__irq_svc) from [<c0010328>] (arch_cpu_idle+0x28/0x30)
[   24.511634] [<c0010328>] (arch_cpu_idle) from [<c005f110>] (cpu_startup_entry+0x2c4/0x3f0)
[   24.519878] [<c005f110>] (cpu_startup_entry) from [<400086c4>] (0x400086c4)
[   24.526821] ---[ end Kernel panic - not syncing: Fatal exception

Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-08-03 16:52:13 +09:00
Dave Airlie afa95e7403 Merge tag 'topic/core-stuff-2014-06-30' of git://anongit.freedesktop.org/drm-intel into drm-next
misc core patches picked up by Daniel and Jani.

* tag 'topic/core-stuff-2014-06-30' of git://anongit.freedesktop.org/drm-intel:
  drm/fb-helper: Remove unnecessary list empty check in drm_fb_helper_debug_enter()
  drm/fb-helper: Redundant info->fix.type_aux setting in drm_fb_helper_fill_fix()
  drm/debugfs: add an "edid_override" file per connector
  drm/debugfs: add a "force" file per connector
  drm: add register and unregister functions for connectors
  drm: fix uninitialized acquire_ctx fields (v2)
  drm: Driver-specific ioctls range from 0x40 to 0x9f
  drm: Don't export internal module variables
2014-07-08 11:04:35 +10:00
Sachin Kamat 0013fc9e55 drm/exynos: Fix de-registration ordering
'exynos_drm_pdev' was not getting unregistered if platform_driver_register()
failed. Fix the ordering to allow this. This also fixes the below warning by
moving the #endif macro. While at it also fix the ordering in the exit function
so that de-registration happens in opposite order of registration.
drivers/gpu/drm/exynos/exynos_drm_drv.c:768:1: warning: label
'err_unregister_pd' defined but not used [-Wunused-label]

Signed-off-by: Sachin Kamat <sachin.kamat@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-06-24 11:11:54 +09:00
Daniel Vetter a1bc07c520 drm: Don't export internal module variables
Drivers really have no business touching these. Noticed because
exynose _did_ touch the vblank off delay, which could potentially
affect other drivers.

drm_debug is an exception since it's used in macros and inline
functions.

Note that this reduces the timeout on exynos from 50s to 5s.
Apparently this was done to paper over a vblank get/put race in
exynos, but really should be fixed properly somewhere else. Spotted by
David.

v2: Drop bonghits changes. Note to self: Don't submit patches
before first coffee.

Cc: Inki Dae <inki.dae@samsung.com>
Reviewed-by: David Herrmann <dh.herrmann@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2014-06-18 13:50:16 +02:00
Damien Lespiau f95aeb17f5 drm: Remove DRM_ARRAY_SIZE() for ARRAY_SIZE()
I cannot see a need to provide a DRM_ version of ARRAY_SIZE(), only used
in a few places. I suspect its usage has been spread by copy & paste
rather than anything else.

Let's just remove it for plain ARRAY_SIZE().

Signed-off-by: Damien Lespiau <damien.lespiau@intel.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2014-06-10 09:36:17 +10:00
Inki Dae df5225bc9a drm/exynos: consider deferred probe case
This patch makes sure that exynos drm framework handles deferred
probe case correctly.

Sub drivers could be probed before resources, clock, regulator,
phy or panel, are ready for them so we should make sure that exynos
drm core waits until all resources are ready and sub drivers are
probed correctly.

Chagelog v2:
- Make sure that exynos drm core tries to bind sub drivers only in case that
  they have a pair: crtc and encoder/connector components should be a pair.
- Remove unnecessary patch:
  drm/exynos: mipi-dsi: consider panel driver-deferred probe
- Return error type correctly.

Signed-off-by: Inki Dae <inki.dae@samsung.com>
Acked-by: Kyungmin Park <kyungmin.park@samsung.com>
2014-06-02 14:29:39 +09:00
Andrzej Hajda 3faf9ccc9a drm/exynos: remove redundant mutex_unlock
The patch fixes unlocking in exynos_drm_component_del.

Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-06-02 02:07:12 +09:00
Takashi Iwai a16f223e35 drm/exynos: Fix double locks at PM resume
The recent commit [3ea87855: drm/helper: lock all around force mode
restore] introduced drm_modeset_lock_all() in
drm_helper_resume_force_mode() itself, while exynos driver takes this
lock before calling it.  Move the function call outside the lock for
avoiding a deadlock.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-06-02 02:07:06 +09:00
Inki Dae d0f73614f5 drm/exynos: remove unnecessary runtime pm interfaces
Exyno drm driver has no real hardware device, and
runtime pm operation should be done by sub drivers.

Signed-off-by: Inki Dae <inki.dae@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
2014-06-02 02:07:05 +09:00
Inki Dae d1afe7d453 drm/exynos: fix comment to exynos_drm_device_subdrv_prove call
subdrv_probe callback of virtual display driver will be
called by exynos_drm_device_subdrv_probe() to create crtc
and encoder/connector for virtual display driver.
So it fixes comments to exynos_drm_device_subdrv probe call.

Signed-off-by: Inki Dae <inki.dae@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
2014-06-02 02:07:04 +09:00
Inki Dae f37cd5e809 drm/exynos: add component framework support
This patch adds component framework support to resolve
the probe order issue.

Until now, exynos drm had used codes specific to exynos drm
to resolve that issue so with this patch, the specific codes
are removed.

Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-06-02 02:07:04 +09:00
Inki Dae 121692eb08 drm/exynos: modify goto labels to meaningful names
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-06-02 02:07:04 +09:00
Joonyoung Shim be9b64a81a drm/exynos: remove DRIVER_HAVE_IRQ feature
Exynos drm driver cannot support DRIVER_HAVE_IRQ feature because it uses
driver specific one instead of routine of drm framework to
install/uninstall irq handler.

Signed-off-by: Joonyoung Shim <jy0922.shim@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-06-02 02:07:02 +09:00
Andrzej Hajda 7eb8f069be drm/exynos: add DSIM driver
The patch adds driver for Exynos DSI master (DSIM). It is a platform driver
which is registered as exynos_drm_display sub-driver of exynos_drm framework
and implements DRM encoder/connector pair.
It is also MIPI-DSI host driver and provides DSI bus for panels.
It interacts with its panel(s) using drm_panel framework.

Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-04-04 21:24:48 +09:00
Andrzej Hajda 8e527f0187 drm/exynos: init kms poll after creation of connectors
KMS poll init helper should be run when connectors are created,
otherwise it will not schedule connection detector.

Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Reviewed-by: Tomasz Figa <t.figa@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-03-24 00:36:39 +09:00
Andrzej Hajda 25928a395e drm/exynos: delay fbdev initialization until an output is connected
In case fbdev is initialized before any output is connected,
fb resolution defaults to 1024x768. After that any output with
bigger resolution is ignored and fbdev is not displayed.
The patch postpones fbdev initialization to avoid such situation.

Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Reviewed-by: Tomasz Figa <t.figa@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-03-24 00:36:39 +09:00
Inki Dae d2ba65f6a1 drm/exynos: fix unnecessary resource cleanup
This patch removes unnecessary drm_mode_config_cleanup call.

Signed-off-by: Inki Dae <inki.dae@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
2014-03-24 00:36:38 +09:00
Sean Paul af65c80487 drm/exynos: Consolidate suspend/resume in drm_drv
This patch removes all of the suspend/resume logic from the individual
drivers and consolidates it in drm_drv. This consolidation reduces the
number of functions which enable/disable the hardware to just one -- the
dpms callback. This ensures that we always power up/down in a consistent
manner.

Signed-off-by: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-03-24 00:36:36 +09:00
Sean Paul 1417f109a8 drm/exynos: Move display implementation into dp
This patch moves the exynos_drm_display implementation from fimd into
the dp driver. This will allow for tighter integration of the dp driver
into the exynos drm driver.

Signed-off-by: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-03-24 00:36:35 +09:00
Sean Paul f041b257a8 drm/exynos: Remove exynos_drm_hdmi shim
This patch trims exynos_drm_hdmi out of the driver. The reason it
existed in the first place was to make up for the mixture of
display/overlay/manager ops being spread across hdmi and mixer. With
that code now rationalized, mixer and hdmi map directly to
exynos_drm_crtc and exynos_drm_encoder, respectively. Since there is a
1:1 mapping, we no longer need this layer.

Signed-off-by: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-03-24 00:36:32 +09:00
Sean Paul 080be03de2 drm/exynos: Split manager/display/subdrv
This patch splits display and manager from subdrv. The result is that
crtc functions can directly call into manager callbacks and encoder
functions can directly call into display callbacks. This will allow
us to remove the exynos_drm_hdmi shim and support mixer/hdmi & fimd/dp
with common code.

Signed-off-by: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-03-24 00:36:31 +09:00
Sean Paul 3f283d9375 drm/exynos: Use unsigned long for possible_crtcs
Change all instances of possible_crtcs in the exynos drm driver to be
unsigned long. This matches the type used in the drm layer.

Signed-off-by: Sean Paul <seanpaul@chromium.org>
Reviewed-by: Tomasz Figa <t.figa@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-03-24 00:36:31 +09:00
Daniel Kurtz 307ceaffb3 drm/exynos: Fix (more) freeing issues in exynos_drm_drv.c
The following commit [0] fixed a use-after-free, but left the subdrv open
in the error path.

[0] commit 6ca605f7c7
drm/exynos: Fix freeing issues in exynos_drm_drv.c

Signed-off-by: Daniel Kurtz <djkurtz@chromium.org>
Acked-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-03-24 00:36:26 +09:00
Sachin Kamat 6ca605f7c7 drm/exynos: Fix freeing issues in exynos_drm_drv.c
Fixes the following errors:
drivers/gpu/drm/exynos/exynos_drm_drv.c:182 exynos_drm_open()
error: double free of 'file_priv'
drivers/gpu/drm/exynos/exynos_drm_drv.c:188 exynos_drm_open()
error: dereferencing freed memory 'file_priv'

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-02-07 10:43:48 +09:00
Inki Dae 96f5421523 drm/exynos: use a new anon file for exynos gem mmaper
This patch resolves potential deadlock issue that can be incurred
by changing file->f_op and filp->private_data to exynos specific
mapper ops and gem object temporarily.

To resolve this issue, this patch creates a new anon file dedicated
to exynos specific mmaper, and making it used instead of existing one.

Signed-off-by: Inki Dae <inki.dae@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
2014-01-07 16:51:41 +09:00
Daniel Vetter a9a346d6a8 drm/exynos: call drm_put_dev directly from ->remove
I didn't find any user of the driver data yet, so store the
drm_device pointer in there.

Cc: Inki Dae <inki.dae@samsung.com>
Acked-by: Inki Dae <inki.dae@samsung.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2013-12-18 11:05:40 +10:00
Inki Dae 0cbc330e12 drm/exynos: release unhandled page flip events at postclose.
This patch resolves a dead lock issue that could be incurred when
exynos_drm_crtc_dpms function was called.

The exynos_drm_crtc_dpms function waits for the completion of pended
page flip events. However, preclose callback - this releases all unhandled
page flip events - is called prior to the exynos_drm_crtc_dpms function call
when drm is closed. So at this time, this will make the exynos_drm_crtc_dpms
to wait infiniately for the completion of the page flip events.

This patch releases the unhandled page flip events at postclose instead
of preclose so that exynos_drm_crtc_dpms function can be waked up.

Changelog v2:
- fix a memory leak when drm is closed.
  . it has a memory leak when a requeste page flip is handled after
    drm_events_release() is called and before drm_fb_release()
    is called. At this time, a drm_pending_event will not be freed.
    So also this chage releases the drm_pending_event at postclose().
    And it calls drm_vblank_put() for pair if there is any unhandled page
    flip event.

Signed-off-by: Inki Dae <inki.dae@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
2013-12-02 22:49:20 +09:00
Linus Torvalds 049ffa8ab3 Merge branch 'drm-next' of git://people.freedesktop.org/~airlied/linux
Pull drm updates from Dave Airlie:
 "This is a combo of -next and some -fixes that came in in the
  intervening time.

  Highlights:

  New drivers:
    ARM Armada driver for Marvell Armada 510 SOCs

  Intel:
    Broadwell initial support under a default off switch,
    Stereo/3D HDMI mode support
    Valleyview improvements
    Displayport improvements
    Haswell fixes
    initial mipi dsi panel support
    CRC support for debugging
    build with CONFIG_FB=n

  Radeon:
    enable DPM on a number of GPUs by default
    secondary GPU powerdown support
    enable HDMI audio by default
    Hawaii support

  Nouveau:
    dynamic pm code infrastructure reworked, does nothing major yet
    GK208 modesetting support
    MSI fixes, on by default again
    PMPEG improvements
    pageflipping fixes

  GMA500:
    minnowboard SDVO support

  VMware:
    misc fixes

  MSM:
    prime, plane and rendernodes support

  Tegra:
    rearchitected to put the drm driver into the drm subsystem.
    HDMI and gr2d support for tegra 114 SoC

  QXL:
    oops fix, and multi-head fixes

  DRM core:
    sysfs lifetime fixes
    client capability ioctl
    further cleanups to device midlayer
    more vblank timestamp fixes"

* 'drm-next' of git://people.freedesktop.org/~airlied/linux: (789 commits)
  drm/nouveau: do not map evicted vram buffers in nouveau_bo_vma_add
  drm/nvc0-/gr: shift wrapping bug in nvc0_grctx_generate_r406800
  drm/nouveau/pwr: fix missing mutex unlock in a failure path
  drm/nv40/therm: fix slowing down fan when pstate undefined
  drm/nv11-: synchronise flips to vblank, unless async flip requested
  drm/nvc0-: remove nasty fifo swmthd hack for flip completion method
  drm/nv10-: we no longer need to create nvsw object on user channels
  drm/nouveau: always queue flips relative to kernel channel activity
  drm/nouveau: there is no need to reserve/fence the new fb when flipping
  drm/nouveau: when bailing out of a pushbuf ioctl, do not remove previous fence
  drm/nouveau: allow nouveau_fence_ref() to be a noop
  drm/nvc8/mc: msi rearm is via the nvc0 method
  drm/ttm: Fix vma page_prot bit manipulation
  drm/vmwgfx: Fix a couple of compile / sparse warnings and errors
  drm/vmwgfx: Resource evict fixes
  drm/edid: compare actual vrefresh for all modes for quirks
  drm: shmob_drm: Convert to clk_prepare/unprepare
  drm/nouveau: fix 32-bit build
  drm/i915/opregion: fix build error on CONFIG_ACPI=n
  Revert "drm/radeon/audio: don't set speaker allocation on DCE4+"
  ...
2013-11-15 14:19:54 +09:00
Russell King d6cfaaba1a DMA-API: others: use dma_set_coherent_mask()
The correct way for a driver to specify the coherent DMA mask is
not to directly access the field in the struct device, but to use
dma_set_coherent_mask().  Only arch and bus code should access this
member directly.

Convert all direct write accesses to using the correct API.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2013-10-31 14:49:07 +00:00
David Herrmann 16eb5f4379 drm: kill ->gem_init_object() and friends
All drivers embed gem-objects into their own buffer objects. There is no
reason to keep drm_gem_object_alloc(), gem->driver_private and
->gem_init_object() anymore.

New drivers are highly encouraged to do the same. There is no benefit in
allocating gem-objects separately.

Cc: Dave Airlie <airlied@gmail.com>
Cc: Alex Deucher <alexdeucher@gmail.com>
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: Jerome Glisse <jglisse@redhat.com>
Cc: Rob Clark <robdclark@gmail.com>
Cc: Inki Dae <inki.dae@samsung.com>
Cc: Ben Skeggs <skeggsb@gmail.com>
Cc: Patrik Jakobsson <patrik.r.jakobsson@gmail.com>
Signed-off-by: David Herrmann <dh.herrmann@gmail.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2013-10-09 14:38:02 +10:00
Sachin Kamat 38bb5253a9 drm/exynos: Remove redundant error messages
kzalloc already has built-in error messages. Hence remove
additional ones.

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2013-09-05 13:43:43 +09:00
Rob Clark baa7094355 drm: const'ify ioctls table (v2)
Because, there is no reason for it not to be const.

v1: original
v2: fix compile break in vmwgfx, and couple related cleanups suggested
    by Ville Syrjälä

Signed-off-by: Rob Clark <robdclark@gmail.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2013-08-07 10:10:02 +10:00
Daniel Vetter 43387b37fa drm/gem: create drm_gem_dumb_destroy
All the gem based kms drivers really want the same function to
destroy a dumb framebuffer backing storage object.

So give it to them and roll it out in all drivers.

This still leaves the option open for kms drivers which don't use GEM
for backing storage, but it does decently simplify matters for gem
drivers.

Acked-by: Inki Dae <inki.dae@samsung.com>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Cc: Intel Graphics Development <intel-gfx@lists.freedesktop.org>
Cc: Ben Skeggs <skeggsb@gmail.com>
Reviwed-by: Rob Clark <robdclark@gmail.com>
Cc: Alex Deucher <alexdeucher@gmail.com>
Acked-by: Patrik Jakobsson <patrik.r.jakobsson@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2013-08-07 09:59:24 +10:00
YoungJun Cho ba3706c0f1 drm/exynos: add error check routine in exynos_drm_open
When the exynos_drm_subdrv_open() returns error, the file_priv
should be released and file->driver_priv set to NULL.

Signed-off-by: YoungJun Cho <yj44.cho@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2013-07-04 15:55:36 +09:00
YoungJun Cho bca34c9a40 drm/exynos: Remove tracking log functions
This patch removes tracking log functions which were used to debug
in the early development stage and are not so important as were.
So remove them for code clean up.

Signed-off-by: YoungJun Cho <yj44.cho@samsung.com>
Signed-off-by: Seung-Woo Kim <sw0312.kim@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2013-06-28 21:13:55 +09:00
Seung-Woo Kim 43f4190047 drm/exynos: added ipp device registration to drm driver
This patch added exynos-drm-ipp platform device registration to the exynos drm
driver. When DT is enabled, platform devices need to be registered within the
driver code. This patch fits the requirement of both DT and Non DT based drm
drivers.

Signed-off-by: Seung-Woo Kim <sw0312.kim@samsung.com>
Signed-off-by: Donghwa Lee <dh09.lee@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2013-04-29 14:35:32 +09:00
Seung-Woo Kim 1055f49e99 drm/exynos: fix wrong return check for platform_device_register_simple
platform_device_register_simple() never returns NULL, but IS_ERR_OR_NULL macro
is used for checking return value in exynos drm driver.

Signed-off-by: Seung-Woo Kim <sw0312.kim@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2013-04-29 14:35:32 +09:00
Linus Torvalds ca5c8a4c2a Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux
Pull drm update from Dave Airlie:
 "Exynos and Radeon mostly, with a dma-buf and ttm fix thrown in.

  It's a bit big but its mostly exynos license fix ups and I'd rather
  not hold those up since its legally stuff.

  Radeon has a couple of fixes from dma engine work, TTM is just a
  locking fix, and dma-buf fix has been hanging around and I finally got
  a chance to review it."

* 'drm-fixes' of git://people.freedesktop.org/~airlied/linux: (30 commits)
  drm/ttm: fix fence locking in ttm_buffer_object_transfer
  drm/prime: drop reference on imported dma-buf come from gem
  drm/radeon: add quirk for d3 delay during switcheroo poweron for apple macbooks
  drm/exynos: move finish page flip to a common place
  drm/exynos: fimd: modify condition in fimd resume
  drm/radeon: fix DMA CS parser for r6xx linear copy packet
  drm/radeon: split r6xx and r7xx copy_dma functions
  drm/exynos: Use devm_clk_get in exynos_drm_gsc.c
  drm/exynos: Remove redundant NULL check in exynos_drm_gsc.c
  drm/exynos: Remove explicit freeing using devm_* APIs in exynos_drm_gsc.c
  drm/exynos: Use devm_clk_get in exynos_drm_rotator.c
  drm/exynos: Remove redundant NULL check in exynos_drm_rotator.c
  drm/exynos: Remove unnecessary devm_* freeing APIs in exynos_drm_rotator.c
  drm/exynos: Use devm_clk_get in exynos_drm_fimc.c
  drm/exynos: Remove redundant NULL check
  drm/exynos: Remove explicit freeing using devm_* APIs in exynos_drm_fimc.c
  drm/exynos: Use devm_kzalloc in exynos_drm_ipp.c
  drm/exynos: fix gem buffer allocation type checking
  drm/exynos: remove needless parenthesis.
  drm/exynos: fix incorrect interrupt induced by m2m operation.
  ...
2013-01-08 16:08:10 -08:00
Inki Dae d81aecb5e6 drm/exynos: change file license to GPL
This patch changes file license to GPL

Most of exynos files had been copied from some random
file and not updated correctly. So this patch corrects
the file license.

Signed-off-by: Inki Dae <inki.dae@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
2013-01-04 15:54:32 +09:00
Greg Kroah-Hartman 56550d94cb Drivers: gpu: remove __dev* attributes.
CONFIG_HOTPLUG is going away as an option.  As a result, the __dev*
markings need to be removed.

This change removes the use of __devinit, __devexit_p, and __devexit
from these drivers.

Based on patches originally written by Bill Pemberton, but redone by me
in order to handle some of the coding style issues better, by hand.

Cc: Bill Pemberton <wfp5p@virginia.edu>
Cc: David Airlie <airlied@linux.ie>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-01-03 15:57:15 -08:00