Commit Graph

914 Commits

Author SHA1 Message Date
Inki Dae
33e2192fb1 drm/exynos: fix exynos_drm_component_del
This patch resolves the issue that component object isn't removed
correctly.

A given component object couldn't be placed to head of drm_component_list
so all component objects added to the drm_component_list should be checked
to remove the given component object.

Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-11-25 11:58:27 +09:00
Julia Lawall
be19d93369 drm/exynos/ipp: fix error return code
Propagate the returned error code on failure.

A simplified version of the semantic match that finds this problem is as
follows: (http://coccinelle.lip6.fr/)

// <smpl>
@@
identifier ret; expression e1,e2;
@@
(
if (\(ret < 0\|ret != 0\))
 { ... return ret; }
|
ret = 0
)
... when != ret = e1
    when != &ret
*if(...)
{
  ... when != ret = e2
      when forall
 return ret;
}
// </smpl>

Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-11-24 23:52:04 +09:00
Inki Dae
4846e45208 drm/exynos: clean up machine compatible string check
Use 'for' statemant instead of hard-coded 'if' statement.

Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-11-24 18:02:57 +09:00
Gustavo Padovan
820687befe drm/exynos: move Exynos platform drivers registration to init
Registering the Exynos DRM subdevices platform drivers in the probe
function is causing an infinite loop. Fix this by moving it to the
exynos_drm_init() function to register the drivers on module init.

Registering drivers in the probe functions causes a deadlock in the parent
device lock. See Grant Likely explanation on the topic:

"I think the problem is that exynos_drm_init() is registering a normal
(non-OF) platform device, so the parent will be /sys/devices/platform.
It immediately gets bound against exynos_drm_platform_driver which
calls the exynos drm_platform_probe() hook. The driver core obtains
device_lock() on the device *and on the device parent*.

Inside the probe hook, additional platform_drivers get registered.
Each time one does, it tries to bind against every platform device in
the system, which includes the ones created by OF. When it attempts to
bind, it obtains device_lock() on the device *and on the device
parent*.

Before the change to move of-generated platform devices into
/sys/devices/platform, the devices had different parents. Now both
devices have /sys/devices/platform as the parent, so yes they are
going to deadlock.

The real problem is registering drivers from within a probe hook. That
is completely wrong for the above deadlock reason. __driver_attach()
will deadlock. Those registrations must be pulled out of .probe().

Registering devices in .probe() is okay because __device_attach()
doesn't try to obtain device_lock() on the parent."

 INFO: task swapper/0:1 blocked for more than 120 seconds.
       Not tainted 3.18.0-rc3-next-20141105 #794
 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
 swapper/0       D c052534c     0     1      0 0x00000000
 [<c052534c>] (__schedule) from [<c0525b34>] (schedule_preempt_disabled+0x14/0x20)
 [<c0525b34>] (schedule_preempt_disabled) from [<c0526d44>] (mutex_lock_nested+0x1c4/0x464

 [<c0526d44>] (mutex_lock_nested) from [<c02be908>] (__driver_attach+0x48/0x98)
 [<c02be908>] (__driver_attach) from [<c02bcc00>] (bus_for_each_dev+0x54/0x88)
 [<c02bcc00>] (bus_for_each_dev) from [<c02bdce0>] (bus_add_driver+0xe4/0x200)
 [<c02bdce0>] (bus_add_driver) from [<c02bef94>] (driver_register+0x78/0xf4)
 [<c02bef94>] (driver_register) from [<c029e99c>] (exynos_drm_platform_probe+0x34/0x234)
 [<c029e99c>] (exynos_drm_platform_probe) from [<c02bfcf0>] (platform_drv_probe+0x48/0xa4)
 [<c02bfcf0>] (platform_drv_probe) from [<c02be680>] (driver_probe_device+0x13c/0x37c)
 [<c02be680>] (driver_probe_device) from [<c02be954>] (__driver_attach+0x94/0x98)
 [<c02be954>] (__driver_attach) from [<c02bcc00>] (bus_for_each_dev+0x54/0x88)
 [<c02bcc00>] (bus_for_each_dev) from [<c02bdce0>] (bus_add_driver+0xe4/0x200)
 [<c02bdce0>] (bus_add_driver) from [<c02bef94>] (driver_register+0x78/0xf4)
 [<c02bef94>] (driver_register) from [<c029e938>] (exynos_drm_init+0x70/0xa0)
 [<c029e938>] (exynos_drm_init) from [<c00089b0>] (do_one_initcall+0xac/0x1f0)
 [<c00089b0>] (do_one_initcall) from [<c074bd90>] (kernel_init_freeable+0x10c/0x1d8)
 [<c074bd90>] (kernel_init_freeable) from [<c051eabc>] (kernel_init+0x8/0xec)
 [<c051eabc>] (kernel_init) from [<c000f268>] (ret_from_fork+0x14/0x2c)
 3 locks held by swapper/0/1:
  #0:  (&dev->mutex){......}, at: [<c02be908>] __driver_attach+0x48/0x98
  #1:  (&dev->mutex){......}, at: [<c02be918>] __driver_attach+0x58/0x98
  #2:  (&dev->mutex){......}, at: [<c02be908>] __driver_attach+0x48/0x98

Changelog v2:
- call platform_driver_register after all kms and non kms drivers are
  registered
- rebased it to exynos-drm-next

Signed-off-by: Javier Martinez Canillas <javier.martinez@collabora.co.uk>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-11-24 18:02:57 +09:00
Gustavo Padovan
b67139571e Revert "drm/exynos: fix null pointer dereference issue"
This reverts commit cea24824ab432f8acabb254d6805e9aa756de6af.

Moving subdriver probe to exynos_drm_platform_probe() was making
exynos_drm_device_subdrv_probe() fail because the platform data wasn't set
yet. It only gets set in exynos_drm_load.

We need to find a smarter way to fix this issue.

Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-11-24 18:02:56 +09:00
Andrzej Hajda
5af3d9bb78 drm/exynos/dpi: stop using display->ctx pointer
The patch replaces accesses to display->ctx pointer by container_of
construct. The field is removed as well as dpi was the last user of it.

Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-11-24 18:02:56 +09:00
Andrzej Hajda
4cfde1f2af drm/exynos/dpi: embed display into private context
exynos_drm_display is used by internal Exynos DRM framework for
representing encoder:connector pair. As it should be mapped 1:1 to dpi
private context it seems more reasonable to embed it directly in that context.
As a result further code simplification will be possible.
Moreover it will be possible to handle multiple dpi devices in the system.

Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-11-24 18:02:56 +09:00
Andrzej Hajda
63b3be3270 drm/exynos/dp: stop using display->ctx pointer
The patch replaces accesses to display->ctx pointer by container_of
construct. It will allow to remove ctx field in the future.

Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-11-24 18:02:56 +09:00
Andrzej Hajda
1df6e5fb79 drm/exynos/dp: embed display into private context
exynos_drm_display is used by internal Exynos DRM framework for
representing encoder:connector pair. As it should be mapped 1:1 to dp
private context it seems more reasonable to embed it directly in that context.
As a result further code simplification will be possible.
Moreover it will be possible to handle multiple dp devices in the system.

Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-11-24 18:02:56 +09:00
Andrzej Hajda
2f26bd7227 drm/exynos/vidi: stop using display->ctx pointer
The patch replaces accesses to display->ctx pointer by container_of
construct. It will allow to remove ctx field in the future.

Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-11-24 18:02:56 +09:00
Andrzej Hajda
7340426aff drm/exynos/vidi: embed display into private context
exynos_drm_display is used by internal Exynos DRM framework for
representing encoder:connector pair. As it should be mapped 1:1 to vidi
private context it seems more reasonable to embed it directly in that context.
As a result further code simplification will be possible.
Moreover it will be possible to handle multiple vidi devices in the system.

Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-11-24 18:02:55 +09:00
Andrzej Hajda
0d8424f83c drm/exynos/hdmi: stop using display->ctx pointer
The patch replaces accesses to display->ctx pointer by container_of
construct. It will allow to remove ctx field in the future.

Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-11-24 18:02:55 +09:00
Andrzej Hajda
930865fbe2 drm/exynos/hdmi: embed display into private context
exynos_drm_display is used by internal Exynos DRM framework for
representing encoder:connector pair. As it should be mapped 1:1 to hdmi
private context it seems more reasonable to embed it directly in that context.
As a result further code simplification will be possible.
Moreover it will be possible to handle multiple hdmi devices in the system.

Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-11-24 18:02:55 +09:00
Andrzej Hajda
400c8ac8fc drm/exynos/fimd: stop using manager->ctx pointer
The patch replaces accesses to manager->ctx pointer by container_of
construct. As fimd was the last user of ctx the patch removes
this field as well.

Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-11-24 18:02:55 +09:00
Andrzej Hajda
e152dbd77b drm/exynos/fimd: embed manager into private context
exynos_drm_manager is used by internal Exynos DRM framework for
representing crtc. As it should be mapped 1:1 to fimd private context
it seems more reasonable to embed it directly in that context.
As a result further code simplification will be possible.
Moreover it will be possible to handle multiple FIMD devices in the system.

Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-11-24 18:02:55 +09:00
Andrzej Hajda
e1819aad14 drm/exynos/vidi: stop using manager->ctx pointer
The patch replaces accesses to manager->ctx pointer by container_of
construct. It will allow to remove ctx field in the future.

Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-11-24 18:02:55 +09:00
Andrzej Hajda
f01833cd2b drm/exynos/vidi: embed manager into private context
exynos_drm_manager is used by internal Exynos DRM framework for
representing crtc. As it should be mapped 1:1 to vidi private context
it seems more reasonable to embed it directly in that context.
As a result further code simplification will be possible.
Moreover it will be possible to handle multiple mixer devices in the system.

Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-11-24 18:02:54 +09:00
Andrzej Hajda
8f0be8304d drm/exynos/mixer: stop using manager->ctx pointer
The patch replaces accesses to manager->ctx pointer by container_of
construct. It will allow to remove ctx field in the future.

Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-11-24 18:02:54 +09:00
Andrzej Hajda
8103ef1b5f drm/exynos/mixer: embed manager into private context
exynos_drm_manager is used by internal Exynos DRM framework for
representing crtc. As it should be mapped 1:1 to fimd private context
it seems more reasonable to embed it directly in that context.
As a result further code simplification will be possible.
Moreover it will be possible to handle multiple mixer devices in the system.

Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-11-24 18:02:54 +09:00
YoungJun Cho
0cef83a5fd drm/exynos: dsi: set TE GPIO IRQ status as IRQ_NOAUTOEN
The exynos_dsi_te_irq_handler() works only dsi(DPMS) is on.
So it is enough to enable and disable TE GPIO IRQ in
exynos_dsi_enable(disable)_irq() like DSI IRQ.

Signed-off-by: YoungJun Cho <yj44.cho@samsung.com>
Acked-by: Inki Dae <inki.dae@samsung.com>a
Acked-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-11-24 18:02:54 +09:00
YoungJun Cho
ecb84157b5 drm/exynos: dsi: move TE irq handler registration position
The drm_helper_hpd_irq_event() does dpms control and
the panel is initialized and displayed on by it.
So the exynos_dsi_te_irq_handler() should be registered
beforehand.

Signed-off-by: YoungJun Cho <yj44.cho@samsung.com>
Acked-by: Inki Dae <inki.dae@samsung.com>
Acked-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-11-24 18:02:54 +09:00
Joonyoung Shim
adf67abff0 drm/exynos: use irq_flags instead of triggering
The drm_handle_vblank should be called whenever be vsync, te interrupt
means vsync on i80 interface.

Signed-off-by: Joonyoung Shim <jy0922.shim@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-11-24 18:02:54 +09:00
YoungJun Cho
87ab85b3cc drm/exynos: fimd: add triggering unset routine in fimd_trigger()
There is a case like set config which requires triggering
but vblank is not enabled yet.
So triggering unset routine is required to exit from
triggering mode.

Signed-off-by: YoungJun Cho <yj44.cho@samsung.com>
Acked-by: Inki Dae <inki.dae@samsung.com>
Acked-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-11-24 18:02:54 +09:00
YoungJun Cho
1c905d9508 drm/exynos: fimd: modify I80 i/f irq relevant routine
For the I80 interface, the video interrupt pending register(VIDINTCON1)
should be handled in fimd_irq_handler() and the video interrupt control
register(VIDINTCON0) should be handled in fimd_enable_vblank() and
fimd_disable_vblank() like RGB interface.
So this patch moves each set / unset routines into proper positions.

Signed-off-by: YoungJun Cho <yj44.cho@samsung.com>
Acked-by: Inki Dae <inki.dae@samsung.com>
Acked-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-11-24 18:02:53 +09:00
YoungJun Cho
999d8b31fa drm/exynos: fimd: add fimd_enable_shadow_channel_path() to cleanup
This function is valid only the SoC has SHADOWCON register
and it should be used together with fimd_enable_video_output()
to match the ENWIN_F bit in WINCON# and C#_EN_F bit in SHADOWCON.

Signed-off-by: YoungJun Cho <yj44.cho@samsung.com>
Acked-by: Inki Dae <inki.dae@samsung.com>
Acked-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-11-24 18:02:53 +09:00
YoungJun Cho
f181a543c7 drm/exynos: fimd: add fimd_enable_video_output() to cleanup
This bit is used for video output and logic signal control.
So it is better for readability.

Signed-off-by: YoungJun Cho <yj44.cho@samsung.com>
Acked-by: Inki Dae <inki.dae@samsung.com>
Acked-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-11-24 18:02:53 +09:00
YoungJun Cho
74944a58f9 drm/exynos: fimd: move shadow unprotection position
The C#_EN_F in SHADOWCON register is updated per frame.
So it should be protected by fimd_shadow_protect_win().

Signed-off-by: YoungJun Cho <yj44.cho@samsung.com>
Acked-by: Inki Dae <inki.dae@samsung.com>
Acked-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-11-24 18:02:53 +09:00
Joonyoung Shim
9b67eb7365 drm/exynos: move triggering checking
It's better to be checking whether triggerring in fimd_trigger function.
Also it will return if in triggerring on fimd_te_handler, then it can't
execute remain codes.

Signed-off-by: Joonyoung Shim <jy0922.shim@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-11-24 18:02:53 +09:00
Joonyoung Shim
3c3c9c1d90 drm/exynos: add has_vtsel flag
The exynos fimd provides video type selection bits from system register
but exynos3 series don't has it, so needs has_vtsel flag and we can
distinguish whether set video type selection bits.

Signed-off-by: Joonyoung Shim <jy0922.shim@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-11-24 18:02:53 +09:00
Krzysztof Kozlowski
030794a368 drm/exynos: Fix DSI resuming fail because power domain being off
During system resume from suspend to RAM the Exynos DRM driver forced
CRTC mode thus turning display on (DPMS_ON). This lead to runtime resuming
of DSI which failed because whole LCD power domain was off and it was
not allowed to turn on because of system resume in progress.

Forcing mode should not be needed and removing it solves this particular
problem.

This necessary fix for following scenario reproduced on Exynos DRM:
1. Power domain is off before suspending the system.
2. System is suspended to RAM.
3. Resuming starts. The Exynos DRM driver resume callback is called.
4. The Exynos DRM driver calls drm_helper_resume_force_mode() which turns
   on the screen by calling exynos_dsi_dpms with DRM_MODE_DPMS_ON.
5. The Exynos DSI driver calls pm_runtime_get. The driver runtime
   resumes and this should turn LCD power domain on.
6. Unfortunately the domain cannot be turned on because system resume is
   in progress and genpd->prepared_count is positive.

Steps to reproduce:
1. Add runtime PM to Exynos DSI driver.
2. Build Exynos DRM/FB without FRAMEBUFFER_CONSOLE.
3. Enable the connector and screen (e.g. with modeset-vsync).
4. echo 3 > /sys/devices/platform/exynos-drm/graphics/fb0/blank
5. echo mem > /sys/power/state
6. Resume.
[   77.712469] PM: early resume of devices complete after 3.854 msecs
[   77.712739] exynos-dsi 11c80000.dsi: pm_genpd_resume()
[   77.712758] exynos4-fimc 11800000.fimc: pm_genpd_resume()
[   77.712774] exynos4-fimc 11810000.fimc: pm_genpd_resume()
[   77.712787] exynos-drm-fimc 11820000.fimc: pm_genpd_resume()
[   77.712802] exynos-drm-fimc 11830000.fimc: pm_genpd_resume()
[   77.712815] s5p-mipi-csis 11880000.csis: pm_genpd_resume()
[   77.712829] s5p-mipi-csis 11890000.csis: pm_genpd_resume()
[   77.712843] exynos-fimc-lite 12390000.fimc-lite: pm_genpd_resume()
[   77.712856] exynos-fimc-lite 123a0000.fimc-lite: pm_genpd_resume()
[   77.713788] exynos4-fb 11c00000.fimd: pm_genpd_resume()
[   77.713912] wake disabled for irq 184
[   77.713923] wake disabled for irq 185
[   77.714082] wake disabled for irq 173
[   77.715676] wake disabled for irq 176
[   77.718540] exynos4-fb 11c00000.fimd: pm_genpd_runtime_resume()
[   77.718567] exynos4-fb 11c00000.fimd: state restore latency exceeded, new value 1708 ns
[   77.718636] exynos-dsi 11c80000.dsi: pm_genpd_runtime_resume()
[   77.892366] exynos-dsi 11c80000.dsi: PLL failed to stabilize
[   77.892377] exynos-dsi 11c80000.dsi: failed to configure DSI PLL
[   78.192168] exynos-dsi 11c80000.dsi: timeout waiting for reset
[   78.211578] exynos-dsi 11c80000.dsi: waiting for bus lanes timed out
[   78.307173] exynos-dsi 11c80000.dsi: xfer timed out: d1 00 (null)
[   78.307190] panel_s6e8aa0 11c80000.dsi.0: error -110 reading dcs seq(0xd1)
[   78.307199] panel_s6e8aa0 11c80000.dsi.0: read id failed

Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-11-24 18:02:52 +09:00
YoungJun Cho
d41bb38f22 drm/exynos: dsi: move DSIM_STATE_ENABLED set position
The command mode panel should draw image earlier than the display
on command execution to prevent showing garbage GRAM screen data.
So should set dsi->state as DSIM_STATE_ENABLED between calling
exynos_dsi_set_display_enable() and drm_panel_enable() to transmit
image data before executing display on command.
And moves the display on command execution routine from prepare()
to enable() in drm_panel_funcs also.

Signed-off-by: YoungJun Cho <yj44.cho@samsung.com>
Acked-by: Inki Dae <inki.dae@samsung.com>
Acked-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-11-24 18:02:52 +09:00
YoungJun Cho
b301ae24bb drm/exynos: fimd: move handle vblank position in TE handler
For providing VBLANK information, drm_handle_vblank() should
be called properly, but it is blocked by wait_vsync_event
condition which is set by manager_ops->wait_for_vblank().
So moves it out from wait_vsync_event routine.

Signed-off-by: YoungJun Cho <yj44.cho@samsung.com>
Acked-by: Inki Dae <inki.dae@samsung.com>
Acked-by: Kyungmin Park <kyungmin.park@samsung.com>
Acked-by: Inki Dae <inki.dae@samsung.com>
2014-11-24 18:02:52 +09:00
YoungJun Cho
bd953de943 drm/exynos: fimd: remove unnecessary waiting vblank routine
The exynos_drm_crtc_dpms() waits until pended page flip
queue is empty, calls the drm_vblank_off() then calls
manager->ops->dpms() when mode is DRM_MODE_DPMS_OFF.
The fimd_dpms() is one of manager->ops->dpms()s and
finally calls fimd_window_suspend().
But there is no active window and vblank is already off
when it is called.
So addtional waiting vblank is not necessary any more.

Signed-off-by: YoungJun Cho <yj44.cho@samsung.com>
Acked-by: Inki Dae <inki.dae@samsung.com>
Acked-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-11-24 18:02:52 +09:00
YoungJun Cho
dcb622aa88 drm/exynos: fimd: support Exynos4415 SoC
This patch supports Exynos4415 SoC.

Signed-off-by: YoungJun Cho <yj44.cho@samsung.com>
Acked-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-11-24 18:02:52 +09:00
YoungJun Cho
4bc6d6445e drm/exynos: dsi: support Exynos4415 SoC
This patch supports Exynos4415 SoC.

Signed-off-by: YoungJun Cho <yj44.cho@samsung.com>
Acked-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-11-24 18:02:52 +09:00
Vivek Gautam
b128aefe0b drm/exynos: dp: Remove support for unused dptx-phy
Now that we have moved to generic phy based bindings,
we don't need to have any code related to older dptx-phy.
Nobody is using this dptx-phy anymore, so removing the
same.

Signed-off-by: Vivek Gautam <gautam.vivek@samsung.com>
Acked-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-11-24 18:02:51 +09:00
Gustavo Padovan
9755884772 drm/exynos: remove leftover hdmi function declarations
They are not implemented anywhere, so wipe them out.

Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-11-24 18:02:51 +09:00
Gustavo Padovan
60cb85862e drm/exynos: update documentation to reflect code changes
Description of the @create_connector callback was missing,
and the @manager was no longer needed.

Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-11-24 18:02:51 +09:00
Gustavo Padovan
4a5827fbc2 drm/exynos: Save up space using bool var as bitfields
Save a few bytes by compiling them all in the same byte.

Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-11-24 18:02:51 +09:00
Gustavo Padovan
5d0e6fec7f drm/exynos: remove unused wait_for macro
This is a leftover, all code using this macro have been removed/
changed already.

Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-11-24 18:02:51 +09:00
Gustavo Padovan
cc2d861c5f drm/exynos: Replace repeated declarations by #include "exynos_drm_drv.h"
Re-declare struct is not a good practice, let's use the original
drm and exynos declarations.

Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-11-24 18:02:51 +09:00
Gustavo Padovan
d2c1bba3f6 drm/exynos: Replace repeated declaration by include <drm/drmP.h>
Re-declare struct is not a good practice, let's use the original
drm declarations.

Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-11-24 18:02:50 +09:00
Gustavo Padovan
f859d6e859 drm/exynos: remove extra declaration of struct exynos_overlay
The struct is defined in the same file, declare it here is just
unnecessary

Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-11-24 18:02:50 +09:00
Gustavo Padovan
b5b1a4bb15 drm/exynos: remove extra declaration of struct exynos_drm_manager
The struct is defined in the same file, declare it here is just
unnecessary.

Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-11-24 18:02:50 +09:00
Gustavo Padovan
ff9c87ce9b drm/exynos: remove uneeded declaration of struct dma_iommu_mapping
It is not even used in this header anymore.

Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-11-24 18:02:50 +09:00
Andrzej Hajda
5cd5db8040 drm/exynos: dsi: stop using display->ctx pointer
The patch replaces accesses to display->ctx pointer by container_of
construct. It will allow to remove ctx field in the future.

Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-11-24 18:02:50 +09:00
Andrzej Hajda
e5169723da drm/exynos: dsi: remove redundant encoder field
The patch removes redundant encoder field from private DSI context.

Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-11-24 18:02:50 +09:00
Andrzej Hajda
e2d2a1e0a2 drm/exynos: dsi: simplify device pointer evaluation
The patch replaces multiple evaluation of device address
with local variable.

Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-11-24 18:02:49 +09:00
Andrzej Hajda
2900c69c52 drm/exynos: dsi: remove global variable exynos_dsi_display
exynos_dsi_display is used by internal Exynos DRM framework for
representing pair encoder->connecter. As it should be mapped 1:1 to dsi
private context it seems more reasonable to embed it directly
in that context. As a result further code simplification will be possible.
Moreover it will be possible to handle multiple DSI devices in the system.

Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-11-24 18:02:49 +09:00
Andrzej Hajda
7239067795 drm/exynos: remove ifdeferry from initialization code
The patch replaces separate calls to driver (de)registration by
loops over the array of drivers. As a result it significantly
decreases number of ifdefs. Additionally it moves device registration
related ifdefs to header file.

Changelog v2:
- Rebased.
- Consider non kms driver in respect to infinite loop issue.

Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-11-24 18:02:49 +09:00
Inki Dae
421ee18d4e drm/exynos: fix null pointer dereference issue
This patch fixes null pointer dereference issue incurred
when ipp driver is enabled and Exynos drm driver is closed.

Non kms driver should register its own sub driver to setup necessary
resources, which is done by load(). So null pointer dereference
occurs when ipp driver is enabled and Exynos drm driver is closed
because ipp core device is registered after component_master_add_with_match
call.

This patch makes exynos_drm_device_subdrv_probe() to be called after all non
kms drivers are registered.

Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-11-24 18:02:49 +09:00
Inki Dae
e9fbdcb45a drm/exynos: fix possible infinite loop issue
This patch fixes possible infinite loop issue by postponing
registration to non kms drivers after component_master_add_with_match
call, which can be incurred in all cases that non kms driver is probed
and then component bind is failed

This patch should be applied on top of below patches,
	http://comments.gmane.org/gmane.comp.video.dri.devel/117740
	http://www.spinics.net/lists/linux-samsung-soc/msg38624.html

Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-11-24 18:02:49 +09:00
Inki Dae
2d15118750 drm/exynos: g2d: fix null pointer dereference
This patch fixes a null pointer dereference issue incurred by
calling g2d_remove when exynos_drm_platform_probe is failed.

cmdlist_pool of g2d is allocated when g2d sub driver is probed.
So if exynos_drm_platform_probe is failed, the g2d sub driver is
not probed and the cmdlist_pool is still NULL.

Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-11-24 18:02:48 +09:00
Inki Dae
fbdf093d62 drm/exynos: resolve infinite loop issue on non multi-platform
This patch resovles the infinite loop issue incurred
when Exyno drm driver is enabled but all kms drivers
are disabled on Exynos board by returning -EPROBE_DEFER
only in case that there is kms device registered.

Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-11-24 18:02:48 +09:00
Inki Dae
5cbb37df37 drm/exynos: resolve infinite loop issue on multi-platform
This patch resolves temporarily infinite loop issue incurred
when Exynos drm driver is enabled and multi-platform kernel
is used by registering Exynos drm device object only in case
of Exynos SoC. So this patch will be replaced with more generic
way later.

Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-11-24 18:02:47 +09:00
Dave Airlie
8aa3dc3c17 drm/panel: Changes for v3.19-rc1
This contains support for a couple of new panels, updates for some GPIO
 API changes and a bunch of updates to the MIPI DSI support that should
 make it easier to write panel drivers in the future.
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Merge tag 'drm/panel/for-3.19-rc1' of git://people.freedesktop.org/~tagr/linux into drm-next

drm/panel: Changes for v3.19-rc1

This contains support for a couple of new panels, updates for some GPIO
API changes and a bunch of updates to the MIPI DSI support that should
make it easier to write panel drivers in the future.

* tag 'drm/panel/for-3.19-rc1' of git://people.freedesktop.org/~tagr/linux: (31 commits)
  drm/panel: Add Sharp LQ101R1SX01 support
  drm/dsi: Do not require .owner field to be set
  drm/dsi: Resolve MIPI DSI device from phandle
  drm/dsi: Implement DCS set_{column,page}_address commands
  drm/dsi: Implement DCS {get,set}_pixel_format commands
  drm/dsi: Implement DCS get_power_mode command
  drm/dsi: Implement DCS soft_reset command
  drm/dsi: Implement DCS nop command
  drm/dsi: Add to DocBook documentation
  drm/dsi: Implement some standard DCS commands
  drm/dsi: Implement generic read and write commands
  drm/panel: s6e8aa0: Use standard MIPI DSI function
  drm/dsi: Add mipi_dsi_set_maximum_return_packet_size() helper
  drm/dsi: Constify mipi_dsi_msg
  drm/dsi: Make mipi_dsi_dcs_{read,write}() symmetrical
  drm/dsi: Add DSI transfer helper
  drm/dsi: Add message to packet translator
  drm/dsi: Introduce packet format helpers
  drm/panel: s6e8aa0: Fix build warnings on 64-bit
  drm/panel: ld9040: Fix build warnings on 64-bit
  ...
2014-11-15 09:36:13 +10:00
Thierry Reding
ed6ff40ee7 drm/dsi: Constify mipi_dsi_msg
struct mipi_dsi_msg is a read-only structure, drivers should never need
to modify it. Make this explicit by making all references to the struct
const.

Acked-by: Andrzej Hajda <a.hajda@samsung.com>
Reviewed-by: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Thierry Reding <treding@nvidia.com>
2014-11-13 13:55:41 +01:00
Inki Dae
7afbfcc9ae drm/exynos: fix possible infinite loop issue
This patch fixes possible infinite loop issue by postponing
registration to non kms drivers after component_master_add_with_match
call, which can be incurred in all cases that non kms driver is probed
and then component bind is failed

This patch should be applied on top of below patches,
	http://comments.gmane.org/gmane.comp.video.dri.devel/117740
	http://www.spinics.net/lists/linux-samsung-soc/msg38624.html

Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-11-10 14:40:10 +09:00
Inki Dae
9ad703e943 drm/exynos: g2d: fix null pointer dereference
This patch fixes a null pointer dereference issue incurred by
calling g2d_remove when exynos_drm_platform_probe is failed.

cmdlist_pool of g2d is allocated when g2d sub driver is probed.
So if exynos_drm_platform_probe is failed, the g2d sub driver is
not probed and the cmdlist_pool is still NULL.

Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-11-10 14:40:09 +09:00
Inki Dae
f7c2f36f43 drm/exynos: resolve infinite loop issue on non multi-platform
This patch resovles the infinite loop issue incurred
when Exyno drm driver is enabled but all kms drivers
are disabled on Exynos board by returning -EPROBE_DEFER
only in case that there is kms device registered.

Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-11-10 14:40:07 +09:00
Inki Dae
06a2f5c2c4 drm/exynos: resolve infinite loop issue on multi-platform
This patch resolves temporarily infinite loop issue incurred
when Exynos drm driver is enabled and multi-platform kernel
is used by registering Exynos drm device object only in case
of Exynos SoC. So this patch will be replaced with more generic
way later.

Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-11-10 14:40:05 +09:00
Greg Kroah-Hartman
a8a93c6f99 Merge branch 'platform/remove_owner' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux into driver-core-next
Remove all .owner fields from platform drivers
2014-11-03 19:53:56 -08:00
Andrzej Hajda
74cfe07a83 drm/exynos: correct connector->dpms field before resuming
During system suspend after connector switch off its dpms field
is set to connector previous dpms state. To properly resume dpms field
should be set to its actual state (off) before resuming to previous dpms state.

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
d6948b2fd8 drm/exynos: enable vblank after DPMS on
Before DPMS off driver disables vblank.
It should be balanced by vblank enable after DPMS on.
The patch fixes issue with page_flip ioctl not being able
to acquire vblank counter introduced by patch:
drm: Always reject drm_vblank_get() after drm_vblank_off()

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
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
Inki Dae
9887e2d9da drm/exynos: vidi: fix build warning
encoder object isn't used anymore so remove it.

Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-11-03 01:51:27 +09:00
Andrzej Hajda
d9aaf75762 drm/exynos: remove explicit encoder/connector de-initialization
All KMS objects are destroyed by drm_mode_config_cleanup in proper order
so component drivers should not care about 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
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
Wolfram Sang
3097735b38 gpu: drm: exynos: drop owner assignment from platform_drivers
A platform_driver does not need to set an owner, it will be populated by the
driver core.

Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2014-10-20 16:20:32 +02:00
Daniel Vetter
d9fc9413f9 drm: Extract <drm/drm_gem.h>
v2: Don't forget git add, noticed by David.

Cc: David Herrmann <dh.herrmann@gmail.com>

Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Acked-by: David Herrmann <dh.herrmann@gmail.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2014-09-24 11:43:41 +10:00
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
ad279310d7 drm/exynos/hdmi: unregister connector on removal
During component removal driver should unregister connector.

Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-09-20 00:56:15 +09:00
Andrzej Hajda
7c61b1ecab drm/exynos/dp: unregister connector on removal
During component removal driver should unregister connector.

Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-09-20 00:56:15 +09:00
Andrzej Hajda
90eac89726 drm/exynos/dpi: unregister connector and panel on removal
During component removal it should unregister connector
and optionally detach the panel.

Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-09-20 00:56:15 +09:00
Andrzej Hajda
0ae460159f drm/exynos/dsi: unregister connector on removal
During component unbind connector should be unregistered.
Also DSI host should be unregistered after KMS cleanup.

Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-09-20 00:56:15 +09:00
Andrzej Hajda
849b43187a drm/exynos/fb: free exynos framebuffer on error
In case drm_framebuffer_init fails exynos_fb should be freed
before returning an error.

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
Andrzej Hajda
78ef31e204 drm/exynos/fbdev: fix fbdev gem object cleanup
exynos_gem_obj is used by exynos_drm_fbdev_destroy so it cannot be destroyed
before calling the latter. exynos_gem_obj will be destroyed anyway by
exynos_drm_fbdev_destroy->...->exynos_drm_fb_destroy.

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
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
Andrzej Hajda
a36ed46687 drm/exynos/ipp: traverse ipp drivers list safely
On ipp subsystem removal list of ipp drivers is traversed
and their members are deleted. To do it properly safe version
of list_for_each* should be used.

Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-09-20 00:56:13 +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
Andrzej Hajda
18383cb92f drm/exynos/ipp: add file checks for ioctls
Process should not have access to ipp nodes created by another
process. The patch adds necessary checks.
It also simplifies lookup for command node.

Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Reviewed-by: Joonyoung Shim <jy0922.shim@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-09-20 00:56:13 +09:00
Andrzej Hajda
d9b9734c5d drm/exynos/ipp: remove file argument from node related functions
Since file pointer is preserved in c_node passing it
as argument in node functions is redundant.

Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Reviewed-by: Joonyoung Shim <jy0922.shim@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-09-20 00:56:13 +09:00
Andrzej Hajda
20ed715ebb drm/exynos/fimc: fix source buffer registers
FIMC in default mode of operation uses only one input buffer,
but the driver used also second buffer, as a result only the
first frame was processed correctly. The patch fixes it.

Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Reviewed-by: Joonyoung Shim <jy0922.shim@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-09-20 00:56:13 +09:00
Andrzej Hajda
56442d8340 drm/exynos/fimc: simplify buffer queuing
The patch removes redundant checks, redundant HW reads
and simplifies code.

Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Reviewed-by: Joonyoung Shim <jy0922.shim@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-09-20 00:56:12 +09:00
Andrzej Hajda
c7b3014bf9 drm/exynos/fimc: do not enable fimc twice
The patch removes redundant H/W activation.

Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Reviewed-by: Joonyoung Shim <jy0922.shim@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-09-20 00:56:12 +09:00
Andrzej Hajda
7794a775f4 drm/exynos/fimc: avoid clearing overflow bits
Overflow bits shall be cleared by H/W.

Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Reviewed-by: Joonyoung Shim <jy0922.shim@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-09-20 00:56:12 +09:00
Andrzej Hajda
c0592c8549 drm/exynos/ipp: remove events during command cleaning
Events were removed only during stop command, as a result
there were memory leaks if program prematurely exited.
This patch fixes it.

Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Reviewed-by: Joonyoung Shim <jy0922.shim@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-09-20 00:56:12 +09:00
Andrzej Hajda
8aa99dd376 drm/exynos/ipp: stop hardware before freeing memory
Memory shouldn't be freed when hardware is still running.

Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Reviewed-by: Joonyoung Shim <jy0922.shim@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-09-20 00:56:12 +09:00
Andrzej Hajda
05afb1ac53 drm/exynos/ipp: replace work_struct casting with better constructs
Type casting should be avoided if possible. In case of
work_struct it can be simply replaced by reference to member field.

Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Reviewed-by: Joonyoung Shim <jy0922.shim@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-09-20 00:56:12 +09:00
Andrzej Hajda
22e816f87c drm/exynos/ipp: clean memory nodes on command node cleaning
The nodes should be removed before removing command node.

Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Reviewed-by: Joonyoung Shim <jy0922.shim@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-09-20 00:56:11 +09:00
Andrzej Hajda
c4a856a733 drm/exynos/ipp: move nodes cleaning to separate function
The patch introduces ipp_clean_mem_nodes function which replaces
redundant code. Additionally memory node function definitions
are moved up to increase its visibility.

Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Reviewed-by: Joonyoung Shim <jy0922.shim@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-09-20 00:56:11 +09:00
Andrzej Hajda
6602ffb849 drm/exynos/ipp: free partially allocated resources on error
In case of allocation errors some already allocated buffers
were not freed. The patch fixes it.

Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Reviewed-by: Joonyoung Shim <jy0922.shim@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-09-20 00:56:11 +09:00
Andrzej Hajda
985c293d09 drm/exynos/ipp: remove unused field in command node
Since command node have file pointer dev field became useless.

Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Reviewed-by: Joonyoung Shim <jy0922.shim@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-09-20 00:56:10 +09:00
Andrzej Hajda
21a825ee1f drm/exynos/ipp: remove only related commands on file close
On file close driver should remove only command nodes created
via this file.

Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Reviewed-by: Joonyoung Shim <jy0922.shim@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-09-20 00:56:10 +09:00
Andrzej Hajda
945a0aad96 drm/exynos/ipp: move file reference from memory to command node
Command node should contain file reference to distinguish commands
created by different processes.

Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Reviewed-by: Joonyoung Shim <jy0922.shim@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-09-20 00:56:10 +09:00
Andrzej Hajda
6f7d48ea65 drm/exynos/ipp: cancel works before command node clean
All pending works should be canceled prior to its removal.

Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Reviewed-by: Joonyoung Shim <jy0922.shim@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-09-20 00:56:10 +09:00
Andrzej Hajda
9b5bd1c420 drm/exynos/ipp: remove fake pm callbacks
PM callbacks in ipp core do nothing, so the patch removes it.

Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Reviewed-by: Joonyoung Shim <jy0922.shim@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-09-20 00:56:10 +09:00
Marek Szyprowski
eb8a3bf73e drm/exynos: fimd: fix window clear code
To correctly disable hardware window during driver init, both enable bits
(WINCONx_ENWIN in WINCON and SHADOWCON_CHx_ENABLE in SHADOWCON) must be
cleared, otherwise hardware fails to re-enable such window later.

While touching this function, also temporarily disable ctx->suspended flag
to let fimd_wait_for_vblank function really to do its job.

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-09-20 00:56:09 +09:00
Daniel Kurtz
71b1f1956b drm/exynos/fbdev: set smem_len for fbdev
Commit [0] stopped setting fix.smem_start and fix.smem_len when creating
the fbdev.

[0] 2f1eab8d8a
  drm/exynos/fbdev: don't set fix.smem/mmio_{start,len}

However, smem_len is used by some userland applications to calculate the
size for mmap.  In particular, it is used by xf86-video-fbdev:

http://cgit.freedesktop.org/xorg/xserver/tree/hw/xfree86/fbdevhw/fbdevhw.c?id=xorg-server-1.15.99.903#n571

So, let's restore setting the smem_len to unbreak things for these users.

Note: we are still leaving smem_start set to 0.

Reported-by: Siarhei Siamashka <siarhei.siamashka@gmail.com>
Reported-by: Gunther Noack <me@guenthernoack.de>
Signed-off-by: Daniel Kurtz <djkurtz@chromium.org>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-09-20 00:56:09 +09:00
Inki Dae
d6ce7b5829 drm/exynos: fimd: add Exynos3 SoC support
Signed-off-by: Inki Dae <inki.dae@samsung.com>
Reviewed-by: Andrzej Hajda <a.hajda@samsung.com>
2014-09-20 00:56:08 +09:00
Inki Dae
473462a143 drm/exynos: mipi-dsi: add Exynos3 SoC support
This patch adds Exynos3250/3472 SoCs support.

Signed-off-by: Inki Dae <inki.dae@samsung.com>
Reviewed-by: Andrzej Hajda <a.hajda@samsung.com>
2014-09-20 00:56:08 +09:00
Inki Dae
78d3a8c613 drm/exynos: mipi-dsi: consider non-continuous clock mode
This patch adds non-continuous clock mode support

Clock mode on Clock Lane is continuous clock by default.
So if we want to transmit data in non-continuous clock mode
to reduce power consumption, then host driver should set
DSIM_CLKLANE_STOP bit. In this case, host controller turns off
HS clock between high speed transmissions.

For this, this patch adds a new bit, DSIM_CLKLANE_STOP, and makes
the host driver sets this bit only in case that dsi->mode_flags has
MIPI_DSI_CLOCK_NON_CONTINUOUS flag.

Signed-off-by: Inki Dae <inki.dae@samsung.com>
Reviewed-by: Andrzej Hajda <a.hajda@samsung.com>
2014-09-20 00:56:08 +09:00
YoungJun Cho
8525b5ec90 drm/exynos: dsi: fix exynos_dsi_set_pll() wrong return value
The type of this function is unsigned long, and it is expected
to return proper fout value or zero if something is wrong.
So this patch fixes wrong return value for error cases.

Signed-off-by: YoungJun Cho <yj44.cho@samsung.com>
Acked-by: Inki Dae <inki.dae@samsung.com>
Acked-by: Kyungmin Park <kyungmin.park@samsung.com>
Acked-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-09-20 00:56:08 +09:00
Dave Airlie
40d201af0b Merge tag 'drm-intel-next-2014-09-05' of git://anongit.freedesktop.org/drm-intel into drm-next
- final bits (again) for the rotation support (Sonika Jindal)
- support bl_power in the intel backlight (Jani)
- vdd handling improvements from Ville
- i830M fixes from Ville
- piles of prep work all over to make skl enabling just plug in (Damien, Sonika)
- rename DP training defines to reflect latest edp standards, this touches all
  drm drivers supporting DP (Sonika Jindal)
- cache edids during single detect cycle to avoid re-reading it for e.g. audio,
  from Chris
- move w/a for registers which are stored in the hw context to the context init
  code (Arun&Damien)
- edp panel power sequencer fixes, helps chv a lot (Ville)
- piles of other chv fixes all over
- much more paranoid pageflip handling with stall detection and better recovery
  from Chris
- small things all over, as usual

* tag 'drm-intel-next-2014-09-05' of git://anongit.freedesktop.org/drm-intel: (114 commits)
  drm/i915: Update DRIVER_DATE to 20140905
  drm/i915: Decouple the stuck pageflip on modeset
  drm/i915: Check for a stalled page flip after each vblank
  drm/i915: Introduce a for_each_plane() macro
  drm/i915: Rewrite ABS_DIFF() in a safer manner
  drm/i915: Add comments explaining the vdd on/off functions
  drm/i915: Move DP port disable to post_disable for pch platforms
  drm/i915: Enable DP port earlier
  drm/i915: Turn on panel power before doing aux transfers
  drm/i915: Be more careful when picking the initial power sequencer pipe
  drm/i915: Reset power sequencer pipe tracking when disp2d is off
  drm/i915: Track which port is using which pipe's power sequencer
  drm/i915: Fix edp vdd locking
  drm/i915: Reset the HEAD pointer for the ring after writing START
  drm/i915: Fix unsafe vma iteration in i915_drop_caches
  drm/i915: init sprites with univeral plane init function
  drm/i915: Check of !HAS_PCH_SPLIT() in PCH transcoder funcs
  drm/i915: Use HAS_GMCH_DISPLAY un underrun reporting code
  drm/i915: Use IS_BROADWELL() instead of IS_GEN8() in forcewake code
  drm/i915: Don't call gen8_fbc_sw_flush() on chv
  ...
2014-09-16 16:02:09 +10:00
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
Sonika Jindal
0ded925435 drm/exynos: Renaming DP training vswing pre emph defines
Rename the defines to have levels instead of values for vswing and
pre-emph levels as the values may differ in other scenarios like low vswing of
eDP1.4 where the values are different.

Done using following cocci patch for each define:
@@
@@

 # define DP_TRAIN_VOLTAGE_SWING_400     (0 << 0)
+ # define DP_TRAIN_VOLTAGE_SWING_LEVEL_0     (0 << 0)

...

Signed-off-by: Sonika Jindal <sonika.jindal@intel.com>
Acked-by: Dave Airlie <airlied@gmail.com>
Acked-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2014-09-03 11:05:36 +02:00
Linus Torvalds
a7d7a143d0 Merge branch 'drm-next' of git://people.freedesktop.org/~airlied/linux
Pull DRM updates from Dave Airlie:
 "Like all good pull reqs this ends with a revert, so it must mean we
  tested it,

[ Ed. That's _one_ way of looking at it ]

  This pull is missing nouveau, Ben has been stuck trying to track down
  a very longstanding bug that revealed itself due to some other
  changes.  I've asked him to send you a direct pull request for nouveau
  once he cleans things up.  I'm away until Monday so don't want to
  delay things, you can make a decision on that when he sends it, I have
  my phone so I can ack things just not really merge much.

  It has one trivial conflict with your tree in armada_drv.c, and also
  the pull request contains some component changes that are already in
  your tree, the base tree from Russell went via Greg's tree already,
  but some stuff still shows up in here that doesn't when I merge my
  tree into yours.

  Otherwise all pretty standard graphics fare, one new driver and
  changes all over the place.

  New drivers:
   - sti kms driver for STMicroelectronics chipsets stih416 and stih407.

  core:
   - lots of cleanups to the drm core
   - DP MST helper code merged
   - universal cursor planes.
   - render nodes enabled by default

  panel:
   - better panel interfaces
   - new panel support
   - non-continuous cock advertising ability

  ttm:
   - shrinker fixes

  i915:
   - hopefully ditched UMS support
   - runtime pm fixes
   - psr tracking and locking - now enabled by default
   - userptr fixes
   - backlight brightness fixes
   - MST support merged
   - runtime PM for dpms
   - primary planes locking fixes
   - gen8 hw semaphore support
   - fbc fixes
   - runtime PM on SOix sleep state hw.
   - mmio base page flipping
   - lots of vlv/chv fixes.
   - universal cursor planes

  radeon:
   - Hawaii fixes
   - display scalar support for non-fixed mode displays
   - new firmware format support
   - dpm on more asics by default
   - GPUVM improvements
   - uncached and wc GTT buffers
   - BOs > visible VRAM

  exynos:
   - i80 interface support
   - module auto-loading
   - ipp driver consolidated.

  armada:
   - irq handling in crtc layer only
   - crtc renumbering
   - add component support
   - DT interaction changes.

  tegra:
   - load as module fixes
   - eDP bpp and sync polarity fixed
   - DSI non-continuous clock mode support
   - better support for importing buffers from nouveau

  msm:
   - mdp5/adq8084 v1.3 hw enablement
   - devicetree clk changse
   - ifc6410 board working

  tda998x:
   - component support
   - DT documentation update

  vmwgfx:
   - fix compat shader namespace"

* 'drm-next' of git://people.freedesktop.org/~airlied/linux: (551 commits)
  Revert "drm: drop redundant drm_file->is_master"
  drm/panel: simple: Use devm_gpiod_get_optional()
  drm/dsi: Replace upcasting macro by function
  drm/panel: ld9040: Replace upcasting macro by function
  drm/exynos: dp: Modify driver to support drm_panel
  drm/exynos: Move DP setup into commit()
  drm/panel: simple: Add AUO B133HTN01 panel support
  drm/panel: simple: Support delays in panel functions
  drm/panel: simple: Add proper definition for prepare and unprepare
  drm/panel: s6e8aa0: Add proper definition for prepare and unprepare
  drm/panel: ld9040: Add proper definition for prepare and unprepare
  drm/tegra: Add support for panel prepare and unprepare routines
  drm/exynos: dsi: Add support for panel prepare and unprepare routines
  drm/exynos: dpi: Add support for panel prepare and unprepare routines
  drm/panel: simple: Add dummy prepare and unprepare routines
  drm/panel: s6e8aa0: Add dummy prepare and unprepare routines
  drm/panel: ld9040: Add dummy prepare and unprepare routines
  drm/panel: Provide convenience wrapper for .get_modes()
  drm/panel: add .prepare() and .unprepare() functions
  drm/panel: simple: Remove simple-panel compatible
  ...
2014-08-07 17:36:12 -07:00
Dave Airlie
0c6287ec12 drm/panel: Changes for v3.17-rc1
Panels can now be more finely controlled via .prepare() and .unprepare()
 callbacks in addition to .enable() and .disable(). New kerneldoc details
 what they are supposed to do and when they should be called.
 
 The simple panel driver gained support for a couple of new panels and it
 is now possible to specify additional delays during power up and power
 down sequences if panels require it.
 
 DSI devices can now advertise that they support non-continuous clock
 mode which will allow DSI host controllers to disable the high speed
 clock after transmissions to save power.
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Merge tag 'drm/panel/for-3.17-rc1' of git://anongit.freedesktop.org/tegra/linux into drm-next

drm/panel: Changes for v3.17-rc1

Panels can now be more finely controlled via .prepare() and .unprepare()
callbacks in addition to .enable() and .disable(). New kerneldoc details
what they are supposed to do and when they should be called.

The simple panel driver gained support for a couple of new panels and it
is now possible to specify additional delays during power up and power
down sequences if panels require it.

DSI devices can now advertise that they support non-continuous clock
mode which will allow DSI host controllers to disable the high speed
clock after transmissions to save power.

* tag 'drm/panel/for-3.17-rc1' of git://anongit.freedesktop.org/tegra/linux: (30 commits)
  drm/panel: simple: Use devm_gpiod_get_optional()
  drm/dsi: Replace upcasting macro by function
  drm/panel: ld9040: Replace upcasting macro by function
  drm/exynos: dp: Modify driver to support drm_panel
  drm/exynos: Move DP setup into commit()
  drm/panel: simple: Add AUO B133HTN01 panel support
  drm/panel: simple: Support delays in panel functions
  drm/panel: simple: Add proper definition for prepare and unprepare
  drm/panel: s6e8aa0: Add proper definition for prepare and unprepare
  drm/panel: ld9040: Add proper definition for prepare and unprepare
  drm/tegra: Add support for panel prepare and unprepare routines
  drm/exynos: dsi: Add support for panel prepare and unprepare routines
  drm/exynos: dpi: Add support for panel prepare and unprepare routines
  drm/panel: simple: Add dummy prepare and unprepare routines
  drm/panel: s6e8aa0: Add dummy prepare and unprepare routines
  drm/panel: ld9040: Add dummy prepare and unprepare routines
  drm/panel: Provide convenience wrapper for .get_modes()
  drm/panel: add .prepare() and .unprepare() functions
  drm/panel: simple: Remove simple-panel compatible
  drm/panel: simple: Add Innolux N116BGE panel support
  ...
2014-08-07 19:51:52 +10:00
Ajay Kumar
5f1dcd8b7e drm/exynos: dp: Modify driver to support drm_panel
Add drm_panel controls to support powerup/down of the
eDP panel, if one is present at the sink side.

Signed-off-by: Ajay Kumar <ajaykumar.rs@samsung.com>
Acked-by: Inki Dae <inki.dae@samsung.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
2014-08-06 16:44:16 +02:00
Ajay Kumar
4deabfa000 drm/exynos: Move DP setup into commit()
Add commit callback for exynos_dp, and move the DP link training,
video configuration code from the hotplug handler into commit().

Signed-off-by: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Ajay Kumar <ajaykumar.rs@samsung.com>
Acked-by: Inki Dae <inki.dae@samsung.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
2014-08-06 16:44:15 +02:00
Ajay Kumar
cdfb8694dc drm/exynos: dsi: Add support for panel prepare and unprepare routines
Modify exynos_dsi driver to support the new panel calls:
prepare and unprepare.

Signed-off-by: Ajay Kumar <ajaykumar.rs@samsung.com>
Acked-by: Inki Dae <inki.dae@samsung.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
2014-08-06 16:44:11 +02:00
Ajay Kumar
39bbde9cc0 drm/exynos: dpi: Add support for panel prepare and unprepare routines
Modify exynos_dpi driver to support the new panel calls:
prepare and unprepare.

Signed-off-by: Ajay Kumar <ajaykumar.rs@samsung.com>
Acked-by: Inki Dae <inki.dae@samsung.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
2014-08-06 16:44:11 +02:00
Tobias Jakobi
ef7ce055a9 drm/exynos: g2d: let exynos_g2d_get_ver_ioctl fail
Currently the DRM_IOCTL_EXYNOS_G2D_GET_VER ioctl always succeeds, even
if no G2D support is available. Let the ioctl fail when this is the
case, so that userspace can accurately probe for G2D support.

This also fixes the exynos tests in libdrm. There 'g2d_init' doesn't
fail when G2D is absent, leading to a segfault later.

Signed-off-by: Tobias Jakobi <tjakobi@math.uni-bielefeld.de>
Signed-off-by: INki Dae <inki.dae@samsung.com>
2014-08-04 13:39:28 +09:00
Tobias Jakobi
1cd1ea565f drm/exynos: g2d: make ioctls more robust
Both exynos_g2d_set_cmdlist_ioctl and exynos_g2d_exec_ioctl don't check
if the G2D was succesfully probe. If that is not the case, then g2d_priv
is just NULL and extracting 'dev' from it in the next step  is going to
produce a kernel oops.

Add proper checks and return ENODEV if the G2D is not available.

Signed-off-by: Tobias Jakobi <tjakobi@math.uni-bielefeld.de>
Signed-off-by: INki Dae <inki.dae@samsung.com>
2014-08-04 13:39:28 +09:00
Seung-Woo Kim
9d1e25c998 drm/exynos: hdmi: add null check for hdmiphy_port
The hdmiphy can be apb and hdmiphy_port can be null. So before
accessing hdmiphy_port, it should be checked.

Signed-off-by: Seung-Woo Kim <sw0312.kim@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-08-04 13:39:27 +09:00
Joonyoung Shim
f1e716d8f8 drm/exynos: control blending of mixer graphic layer 0
The mixer graphic layer 0 isn't blended as default by commit
0377f4ed9f1aed30292c4e3c87f24e028ae26f36(drm/exynos: Don't blend mixer
layer 0). But it needs to be blended with graphic layer 0 if video layer
is enabled by vp because video layer is bottom.

Signed-off-by: Joonyoung Shim <jy0922.shim@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-08-04 13:39:27 +09:00
Sjoerd Simons
39b58a396d drm/exynos: Add MODULE_DEVICE_TABLE entries for various components
Add MODULE_DEVICE_TABLE calls for the various OF match tables that
currently don't have one. This allows the module to be
autoloaded based on devicetree information.

Signed-off-by: Sjoerd Simons <sjoerd.simons@collabora.co.uk>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-08-04 13:39:27 +09:00
Sjoerd Simons
bd024b86f1 Subject: Revert "drm/exynos: remove MODULE_DEVICE_TABLE definitions"
This reverts commit d089621896 was
original to prevent multiple MODULE_DEVICE_TABLE in one module.
Which, as a side-effect broke autoloading of the module.

Since 21bdd17b21 it is possible to have
multiple calls to MODULE_DEVICE_TABLE, so the patch can be
reverted to restore support for autoloading

Signed-off-by: Sjoerd Simons <sjoerd.simons@collabora.co.uk>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-08-04 13:39:26 +09:00
Sjoerd Simons
0262ceeb57 Subject: Revert "drm/exynos: fix module build error"
Since 21bdd17b21 it is possible to have
multiple calls to MODULE_DEVICE_TABLE, so the patch can be
reverted to restore support for autoloading

Conflicts:
	drivers/gpu/drm/exynos/exynos_drm_fimd.c
	drivers/gpu/drm/exynos/exynos_drm_g2d.c

Signed-off-by: Sjoerd Simons <sjoerd.simons@collabora.co.uk>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-08-04 13:39:26 +09:00
Andrzej Hajda
9cc7d85e45 drm/exynos/ipp: simplify ipp_find_driver
The patch puts repeated code sequence into one function, removes verbose
comments and decreases log verbosity.

Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-08-03 16:52:19 +09:00
Andrzej Hajda
12ff54d25d drm/exynos/ipp: simplify ipp_create_id
There is no gain in passing id by pointer to be filled.

Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-08-03 16:52:19 +09:00
Andrzej Hajda
57ace33584 drm/exynos/ipp: remove redundant messages
In case of error callback prints already corresponding message.

Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-08-03 16:52:19 +09:00
Andrzej Hajda
134f0e9b5d drm/exynos/ipp: simplify ipp_find_obj
The patch simplifies ipp_find_obj and removes debug messages.

Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-08-03 16:52:19 +09:00
Andrzej Hajda
5ece5a1da1 drm/exynos/ipp: remove useless registration checks
Argument checks are redundant, clients always check ippdrv before calling
these functions.

Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-08-03 16:52:18 +09:00
Andrzej Hajda
fb5ee01cfd drm/exynos/ipp: simplify memory check function
The only thing function should check is if there are buffers in respective
queues.

Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-08-03 16:52:18 +09:00
Andrzej Hajda
187d5edf1e drm/exynos/ipp: remove incorrect checks of list_first_entry result
list_first_entry does not return NULL on empty list so this check
does not make sense. Moreover there is already code which prevents calling
list_first_entry on empty lists.

Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-08-03 16:52:18 +09:00
Andrzej Hajda
73b00232ac drm/exynos/ipp: remove temporary variable
There is no reason to allocate intermediate variable.

Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-08-03 16:52:18 +09:00
Andrzej Hajda
a8ea17f60e drm/exynos/ipp: correct address type
exynos_drm_gem_get_dma_addr returns dma_addr_t, type casting to void* and
back is not necessary.

Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-08-03 16:52:17 +09:00
Andrzej Hajda
5c76c5b146 drm/exynos/ipp: remove struct exynos_drm_ipp_private
struct exynos_drm_ipp_private contains only one pointer so all occurrences
of the struct can be replaced by the pointer itself.

Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-08-03 16:52:17 +09:00
Andrzej Hajda
c51f73b3ce drm/exynos/ipp: remove unused field from exynos_drm_ipp_private
The patch removes unused event_list field from struct exynos_drm_ipp_private.

Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-08-03 16:52:17 +09:00
Andrzej Hajda
60b61c2f9e drm/exynos/ipp: remove type casting
The patch replaces type casting with proper pointer.

Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-08-03 16:52:17 +09:00
Alban Browaeys
6411fe3c28 drm/exynos: g2d: add exynos4212 as a compatible device.
Signed-off-by: Tobias Jakobi <tjakobi@math.uni-bielefeld.de>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-08-03 16:52:17 +09:00
YoungJun Cho
9a3204156b drm/exynos: dsi: add driver data to support Exynos5410/5420/5440 SoCs
The offset of register DSIM_PLLTMR_REG in Exynos5410 / 5420 / 5440
SoCs is different from the one in Exynos4 SoCs.

In case of Exynos5410 / 5420 / 5440 SoCs, there is no frequency
band bit in DSIM_PLLCTRL_REG, and it uses DSIM_PHYCTRL_REG and
DSIM_PHYTIMING*_REG instead.
So this patch adds driver data to distinguish it.

Signed-off-by: YoungJun Cho <yj44.cho@samsung.com>
Acked-by: Inki Dae <inki.dae@samsung.com>
Acked-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-08-03 16:52:16 +09:00
YoungJun Cho
3854fab24e drm/exynos: fimd: support LCD I80 interface
To support MIPI command mode based I80 interface panel,
FIMD should do followings:
- Sets LCD I80 interface timings configuration.
- Uses "lcd_sys" as an IRQ resource and sets relevant IRQ configuration.
- Sets LCD block configuration for I80 interface.
- Sets ideal(pixel) clock is 2 times faster than the original one
  to generate frame done IRQ prior to the next TE signal.
- Implements trigger feature that transfers image data if there is page
  flip request, and implements TE handler to call trigger function.

Signed-off-by: YoungJun Cho <yj44.cho@samsung.com>
Acked-by: Inki Dae <inki.dae@samsung.com>
Acked-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-08-03 16:52:15 +09:00
YoungJun Cho
e17ddecc3a drm/exynos: dsi: add TE interrupt handler to support LCD I80 interface
This is a temporary solution and should be made by more
generic way.

To support LCD I80 interface, the DSI host should register
TE interrupt handler from the TE GPIO of attached panel.
So the panel generates a tearing effect synchronization signal
then the DSI host calls the CRTC device manager to trigger
to transfer video image.

Signed-off-by: YoungJun Cho <yj44.cho@samsung.com>
Acked-by: Inki Dae <inki.dae@samsung.com>
Acked-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-08-03 16:52:15 +09:00
YoungJun Cho
5595d4d821 drm/exynos: add TE handler to support LCD I80 interface
To support LCD I80 interface, the panel should generate
Tearing Effect synchronization signal between MCU and FB
to display video images.
And the display controller should trigger to transfer
video image at this signal.
So the panel receives the TE IRQ, then calls these handler
chains to notify it to the display controller.

Signed-off-by: YoungJun Cho <yj44.cho@samsung.com>
Acked-by: Inki Dae <inki.dae@samsung.com>
Acked-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-08-03 16:52:15 +09:00
YoungJun Cho
e35d7223de drm/exynos: use wait_event_timeout() for safety usage
There could be the case that the page flip operation isn't finished correctly
with some abnormal condition such as panel reset. So this patch replaces
wait_event() with wait_event_timeout() to avoid waiting for page flip completion
infinitely.
And clears exynos_crtc->pending_flip in exynos_drm_crtc_page_flip()
when exynos_drm_crtc_mode_set_commit() is failed.

Signed-off-by: YoungJun Cho <yj44.cho@samsung.com>
Acked-by: Inki Dae <inki.dae@samsung.com>
Acked-by: Kyungmin Park <kyungmin.park@samsung.com>
Reviewed-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-08-03 16:52:14 +09:00
YoungJun Cho
2f36e33aef drm/exynos: dsi: move the EoT packets configuration point
This configuration could be used in MIPI DSI command mode also.
And adds user manual description for display configuration.

Signed-off-by: YoungJun Cho <yj44.cho@samsung.com>
Acked-by: Inki Dae <inki.dae@samsung.com>
Acked-by: Kyungmin Park <kyungmin.park@samsung.com>
Reviewed-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-08-03 16:52:14 +09:00
Marek Szyprowski
ff830c961d drm/exynos: hdmi: enable exynos 4210 and 4x12 soc support
Configuration sets for Exynos 4210 and 4x12 SoC were already defined in
Exynos HDMI and Mixed drivers, but they lacked proper linking to device
tree 'compatible' values. This patch fixes this issue adding support for
following compatible values: samsung,exynos4210-mixer,
samsung,exynos4212-mixer and samsung,exynos4210-hdmi. It also corrects
access to sclk_mixer clock, which is available only on Exynos 4210.

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-08-03 16:52:14 +09:00
Marek Szyprowski
05fdf98742 drm/exynos: hdmi: make 'hdmi-en' regulator optional and keep it enabled
HDMI_EN regulator is additional regulator for providing voltage source
for DCC lines available on HDMI connector. When there is no power
provided for DDC epprom, some TV-sets do not pulls up HPD (hot plug
detect) line, what causes HDMI block to stay turned off. This patch
enables HDMI_EN regulator (if available) on driver probe and keep it
enabled all the time to let TV-set correctly signal HPD event.

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-08-03 16:52:13 +09:00
Jingoo Han
8f589bba25 drm/exynos: dp: Use correct module license
According to the header comment in the source file, the driver is
licensed under GPL v2, so update MODULE_LICENSE() to match that.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-08-03 16:52:13 +09:00
Sachin Kamat
4a958d3827 drm/exynos: Remove unused variable in exynos_drm_gem.c
'exynos_gem_obj' is not used in the function. Remove it.

Signed-off-by: Sachin Kamat <sachin.kamat@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-08-03 16:52:13 +09:00
Sachin Kamat
7a9bf6e5c4 drm/exynos: Remove unused variable from exynos_hdmi.c
'frame_size_code' is not used in the function. Remove it.

Signed-off-by: Sachin Kamat <sachin.kamat@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-08-03 16:52:13 +09:00
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
Rob Clark
4726f1ff50 drm/exynos: use helpers
Signed-off-by: Rob Clark <robdclark@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2014-07-18 14:24:34 +10:00
Maarten Lankhorst
3aac4502fd dma-buf: use reservation objects
This allows reservation objects to be used in dma-buf. it's required
for implementing polling support on the fences that belong to a dma-buf.

Signed-off-by: Maarten Lankhorst <maarten.lankhorst@canonical.com>
Acked-by: Mauro Carvalho Chehab <m.chehab@samsung.com> #drivers/media/v4l2-core/
Acked-by: Thomas Hellstrom <thellstrom@vmware.com> #drivers/gpu/drm/ttm
Acked-by: Sumit Semwal <sumit.semwal@linaro.org>
Acked-by: Daniel Vetter <daniel@ffwll.ch>
Signed-off-by: Vincent Stehlé <vincent.stehle@laposte.net> #drivers/gpu/drm/armada/
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-07-08 13:03:20 -07:00
Thierry Reding
10a2310265 drm: Introduce drm_fb_helper_prepare()
To implement hotplug detection in a race-free manner, drivers must call
drm_kms_helper_poll_init() before hotplug events can be triggered. Such
events can be triggered right after any of the encoders or connectors
are initialized. At the same time, if the drm_fb_helper_hotplug_event()
helper is used by a driver, then the poll helper requires some parts of
the FB helper to be initialized to prevent a crash.

At the same time, drm_fb_helper_init() requires information that is not
necessarily available at such an early stage (number of CRTCs and
connectors), so it cannot be used yet.

Add a new helper, drm_fb_helper_prepare(), that initializes the bare
minimum needed to allow drm_kms_helper_poll_init() to execute and any
subsequent hotplug events to be processed properly.

Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2014-07-08 11:31:28 +10:00
Thierry Reding
3a4938799d drm: Constify struct drm_fb_helper_funcs
There's no need for this to be modifiable. Make it const so that it can
be put into the .rodata section.

Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Acked-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2014-07-08 11:31:15 +10:00
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
Rahul Sharma
5d39b9ee8b drm/exynos: enable vsync interrupt while waiting for vblank
mixer_wait_for_vblank function expects that the upcoming
vsync interrupt handler routine will clear the
wait_vsync_event atomic variable.

For this to happen, interrupts should be enabled and
disabled properly.

Signed-off-by: Rahul Sharma <rahul.sharma@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-06-24 23:44:50 +09:00
Rahul Sharma
d74ed93784 drm/exynos: soft reset mixer before reconfigure after power-on
Mixer soft reset is a recommended step before reconfiguring
the mixer after power on. Mixer looses the previous state of
DMAs if soft reset. This is the recommendation from the
hardware team.

Signed-off-by: Rahul Sharma <rahul.sharma@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-06-24 23:44:49 +09:00
Rahul Sharma
5c0f4829e1 drm/exynos: allow multiple layer updates per vsync for mixer
Allowing only one layer update per vsync can cause issues
while there are update available for both layers. There is
a good amount of possibility to loose updates if we allow
single update per vsync.

Signed-off-by: Rahul Sharma <rahul.sharma@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-06-24 23:44:30 +09:00
Rahul Sharma
381be025ac drm/exynos: stop mixer before gating clocks during poweroff
Mixer should be power gated only after it is gracefully stopped.
The recommended sequence is to Stop the mixer and wait till
it enters to IDLE state before gating the clocks and power to
the mixer.

Signed-off-by: Rahul Sharma <rahul.sharma@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-06-24 11:27:29 +09:00
Rahul Sharma
b4bfa3c7d0 drm/exynos: set power state variable after enabling clocks and power
Power state variable holds the state of the mixer device.
Power on and power off functions are toggling these variable
at wrong place.

State variable should be changed to true only after Runtime
PM and clocks are enabled. Else it may result to a situation
where mixer registers are accessed with device power enabled.
Similar logic for poweroff sequence.

Signed-off-by: Rahul Sharma <rahul.sharma@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-06-24 11:25:57 +09:00
Andrzej Hajda
d9b68d89c2 drm/exynos: disable unused windows on apply
The patch disables non-enabled HW windows on applying
configuration, it will allow to clear windows enabled
by bootloader.

Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-06-24 11:11:54 +09:00
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
Dan Carpenter
dcdffedaf2 drm/exynos: change zero to NULL for sparse
We recently changed this function to return a pointer instead of an int
so we need to change this zero to a NULL or Sparse complains:

	drivers/gpu/drm/exynos/exynos_drm_drv.h:346:47:
	warning: Using plain integer as NULL pointer

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-06-24 11:11:54 +09:00
Tomasz Figa
aaa51b13ff drm/exynos: dpi: Fix NULL pointer dereference with legacy bindings
If there is no panel node in DT and instead display timings are provided
directly in FIMD node, there is no panel object created and ctx->panel
becomes NULL. However during Exynos DRM initialization
drm_helper_hpd_irq_event() is called, which in turns calls
exynos_dpi_detect(), which dereferences ctx->panel without a check,
causing a NULL pointer derefrence.

This patch fixes the issue by adding necessary NULL pointer check.

Signed-off-by: Tomasz Figa <tomasz.figa@gmail.com>
Reviewed-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-06-24 11:11:54 +09:00
Inki Dae
245f98f269 drm/exynos: hdmi: fix power order issue
This patch resolves page fault issue of Mixer when disabled.

The SFRs of VP and Mixer are updated by Vertical Sync of Timing
generator which is a part of HDMI so the sequence to disable TV
Subsystem should be as following:
	VP -> Mixer -> HDMI

For this, this patch disables Mixer and VP (if used) prior to
disabling HDMI.

Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-06-24 11:11:54 +09:00
Thomas Wood
34ea3d3863 drm: add register and unregister functions for connectors
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 <thomas.wood@intel.com>
Reviewed-by: David Herrmann <dh.herrmann@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2014-06-19 08:55:28 +02:00
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
Linus Torvalds
682b7c1c8e Merge branch 'drm-next' of git://people.freedesktop.org/~airlied/linux
Pull drm updates from Dave Airlie:
 "This is the main drm merge window pull request, changes all over the
  place, mostly normal levels of churn.

  Highlights:

  Core drm:
     More cleanups, fix race on connector/encoder naming, docs updates,
     object locking rework in prep for atomic modeset

  i915:
     mipi DSI support, valleyview power fixes, cursor size fixes,
     execlist refactoring, vblank improvements, userptr support, OOM
     handling improvements

  radeon:
     GPUVM tuning and large page size support, gart fixes, deep color
     HDMI support, HDMI audio cleanups

  nouveau:
     - displayport rework should fix lots of issues
     - initial gk20a support
     - gk110b support
     - gk208 fixes

  exynos:
     probe order fixes, HDMI changes, IPP consolidation

  msm:
     debugfs updates, misc fixes

  ast:
     ast2400 support, sync with UMS driver

  tegra:
     cleanups, hdmi + hw cursor for Tegra 124.

  panel:
     fixes existing panels add some new ones.

  ipuv3:
     moved from staging to drivers/gpu"

* 'drm-next' of git://people.freedesktop.org/~airlied/linux: (761 commits)
  drm/nouveau/disp/dp: fix tmds passthrough on dp connector
  drm/nouveau/dp: probe dpcd to determine connectedness
  drm/nv50-: trigger update after all connectors disabled
  drm/nv50-: prepare for attaching a SOR to multiple heads
  drm/gf119-/disp: fix debug output on update failure
  drm/nouveau/disp/dp: make use of postcursor when its available
  drm/g94-/disp/dp: take max pullup value across all lanes
  drm/nouveau/bios/dp: parse lane postcursor data
  drm/nouveau/dp: fix support for dpms
  drm/nouveau: register a drm_dp_aux channel for each dp connector
  drm/g94-/disp: add method to power-off dp lanes
  drm/nouveau/disp/dp: maintain link in response to hpd signal
  drm/g94-/disp: bash and wait for something after changing lane power regs
  drm/nouveau/disp/dp: split link config/power into two steps
  drm/nv50/disp: train PIOR-attached DP from second supervisor
  drm/nouveau/disp/dp: make use of existing output data for link training
  drm/gf119/disp: start removing direct vbios parsing from supervisor
  drm/nv50/disp: start removing direct vbios parsing from supervisor
  drm/nouveau/disp/dp: maintain receiver caps in response to hpd signal
  drm/nouveau/disp/dp: create subclass for dp outputs
  ...
2014-06-12 11:32:30 -07:00
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
Damien Lespiau
10d9b4ed30 drm: Remove spurious ';'
One small step after another, the never-ending crusade towards better
code continues.

Signed-off-by: Damien Lespiau <damien.lespiau@intel.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2014-06-10 09:35:42 +10:00
Rob Clark
5ea1f752ae drm: add drm_fb_helper_restore_fbdev_mode_unlocked()
All drm_fb_helper_restore_fbdev_mode() call sites, save one, do the same
locking.  Simplify this into drm_fb_helper_restore_fbdev_mode_unlocked().

Signed-off-by: Rob Clark <robdclark@gmail.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2014-06-05 10:02:40 +10:00
Jonathan Gonzalez V
cbe97414c2 drm/exynos: call find_vma with the mmap_sem held
Performing vma lookups without taking the mm->mmap_sem is asking for
trouble.  While doing the search, the vma in question can be modified or
even removed before returning to the caller.  Take the lock (exclusively)
in order to avoid races while iterating through the vmacache and/or
rbtree.

Signed-off-by: Jonathan Gonzalez V <zeus@gnu.org>
Signed-off-by: Davidlohr Bueso <davidlohr@hp.com>
Cc: Inki Dae <inki.dae@samsung.com>
Cc: Joonyoung Shim <jy0922.shim@samsung.com>
Cc: David Airlie <airlied@linux.ie>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-06-04 16:54:00 -07:00
Linus Torvalds
1aacb90eaa Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial into next
Pull trivial tree changes from Jiri Kosina:
 "Usual pile of patches from trivial tree that make the world go round"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (23 commits)
  staging: go7007: remove reference to CONFIG_KMOD
  aic7xxx: Remove obsolete preprocessor define
  of: dma: doc fixes
  doc: fix incorrect formula to calculate CommitLimit value
  doc: Note need of bc in the kernel build from 3.10 onwards
  mm: Fix printk typo in dmapool.c
  modpost: Fix comment typo "Modules.symvers"
  Kconfig.debug: Grammar s/addition/additional/
  wimax: Spelling s/than/that/, wording s/destinatary/recipient/
  aic7xxx: Spelling s/termnation/termination/
  arm64: mm: Remove superfluous "the" in comment
  of: Spelling s/anonymouns/anonymous/
  dma: imx-sdma: Spelling s/determnine/determine/
  ath10k: Improve grammar in comments
  ath6kl: Spelling s/determnine/determine/
  of: Improve grammar for of_alias_get_id() documentation
  drm/exynos: Spelling s/contro/control/
  radio-bcm2048.c: fix wrong overflow check
  doc: printk-formats: do not mention casts for u64/s64
  doc: spelling error changes
  ...
2014-06-04 08:50:34 -07:00
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
Jingoo Han
2e1ce1a1dd drm/exynos: remove unnecessary exynos_hdmi.h file
The exynos_hdmi.h has been used for the dedicated i2c drivers
that were already removed. Thus, the unnecessary exynos_hdmi.h
should be removed.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Acked-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-06-02 14:09:23 +09:00
Andrzej Hajda
cd6ab4b4bd drm/exynos/fimd: allow multiplatform configuration
The patch removes dependency on !ARCH_MULTIPLATFORM.
This dependency seems to be not longer valid.

Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Reviewed-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-06-02 02:07:15 +09:00
Shirish S
6a296e2049 drm/exynos: add hdmiphy power on/off sequence
This patch implements the power on/off sequence
of HDMI PHY in exynos5420 and exynos5250 as provided
by the hardware team.

This has been verified for mulitple iterations of
S2R.

Signed-off-by: Shirish S <s.shirish@samsung.com>
Signed-off-by: Rahul Sharma <Rahul.Sharma@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-06-02 02:07:15 +09:00
Andrzej Hajda
85a64f7cc9 drm/exynos: ipp: remove description of non-existing field
ipp_id field is removed from exynos_drm_ippdrv struct.
The patch removes its description as well.

Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-06-02 02:07:14 +09:00
YoungJun Cho
fed788da3f drm/exynos: ipp: update comment for struct drm_ipp_buf_info
The attribute gem_objs in struct drm_exynos_ipp_buf_info was
changed to handles. So the comment needs to be updated also.

Signed-off-by: YoungJun Cho <yj44.cho@samsung.com>
Acked-by: Seong-Woo Kim <sw0312.kim@samsung.com>
Acked-by: Kyungmin Park <kyungmin.park@samsung.com>
Tested-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-06-02 02:07:14 +09:00
YoungJun Cho
4d52076785 drm/exynos: ipp: rearrange c_node->event_lock using routine
The c_node->event_list should be protected with
c_node->event_lock.

Signed-off-by: YoungJun Cho <yj44.cho@samsung.com>
Acked-by: Seong-Woo Kim <sw0312.kim@samsung.com>
Acked-by: Kyungmin Park <kyungmin.park@samsung.com>
Tested-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-06-02 02:07:14 +09:00
YoungJun Cho
220db6fe00 drm/exynos: ipp: rearrange c_node->mem_lock using routines
The c_node->mem_list[] should be protected with
c_node->mem_lock.

Signed-off-by: YoungJun Cho <yj44.cho@samsung.com>
Acked-by: Seong-Woo Kim <sw0312.kim@samsung.com>
Acked-by: Kyungmin Park <kyungmin.park@samsung.com>
Tested-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-06-02 02:07:14 +09:00
YoungJun Cho
075436b08b drm/exynos: ipp: add ipp_remove_id()
This patch adds ipp_remove_id() for idr resource free.

Signed-off-by: YoungJun Cho <yj44.cho@samsung.com>
Acked-by: Seong-Woo Kim <sw0312.kim@samsung.com>
Acked-by: Kyungmin Park <kyungmin.park@samsung.com>
Tested-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-06-02 02:07:14 +09:00
YoungJun Cho
7f5af0597b drm/exynos: ipp: add cmd_lock for cmd_list
This patch adds cmd_lock for cmd_list synchronization.

Signed-off-by: YoungJun Cho <yj44.cho@samsung.com>
Acked-by: Seong-Woo Kim <sw0312.kim@samsung.com>
Acked-by: Kyungmin Park <kyungmin.park@samsung.com>
Tested-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-06-02 02:07:13 +09:00
YoungJun Cho
4e4fe5546d drm/exynos: ipp: rename cmd_lock to lock
The ippdrv->cmd_list requires cmd_lock.
So renames cmd_lock to lock for context.

Signed-off-by: YoungJun Cho <yj44.cho@samsung.com>
Acked-by: Seong-Woo Kim <sw0312.kim@samsung.com>
Acked-by: Kyungmin Park <kyungmin.park@samsung.com>
Tested-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-06-02 02:07:13 +09:00
YoungJun Cho
ebaf05c880 drm/exynos: ipp: remove duplicated setting
This patch removes duplicated setting.

Signed-off-by: YoungJun Cho <yj44.cho@samsung.com>
Acked-by: Seong-Woo Kim <sw0312.cho@samsung.com>
Acked-by: Kyungmin Park <kyungmin.park@samsung.com>
Tested-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-06-02 02:07:13 +09:00
YoungJun Cho
c66ce40b1b drm/exynos: ipp: remove usless list_empty() functions
list_for_each_entry() handles empty lists, so there is no
need to check whether the list is empty first.

Signed-off-by: YoungJun Cho <yj44.cho@samsung.com>
Acked-by: Seong-Woo Kim <sw0312.kim@samsung.com>
Acked-by: Kyungmin Park <kyungmin.park@samsung.com>
Tested-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-06-02 02:07:13 +09:00
Sachin Kamat
97f98a3b94 drm/exynos: Use PTR_ERR_OR_ZERO in exynos_dp_core.c
PTR_ERR_OR_ZERO simplifies the code.

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Acked-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-06-02 02:07:13 +09:00
Rahul Sharma
972145c741 drm/exynos: remove hardware overlays disable from fimd probe
System hangs when FIMD registers are accessed to disable
hardware overlays. This is because of the clocks which are
not enabled before register access.

'Hardware overlay disable' is cleaned from the FIMD probe.

Signed-off-by: Rahul Sharma <rahul.sharma@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-06-02 02:07:12 +09:00
Sachin Kamat
7a80ec79f0 drm/exynos: Fix checkpatch warning in exynos_dp_reg.c
Silences the following warning:
WARNING: space prohibited before semicolon

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Acked-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-06-02 02:07:12 +09:00
Andrzej Hajda
a0b13bbd02 drm/exynos: add fimd dependency to fimd related encoders
DPI, DSI and DP drivers will not work without FIMD.
The patch adds appropriate dependencies in Kconfig.

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
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
Andrzej Hajda
b0e08823ca drm/exynos/fimc: simplify and rename fimc_dst_get_buf_seq
fimc_dst_get_buf_seq returns number of buffers
so the name should be fimc_dst_get_buf_count.
Function body has been simplified.

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
Andrzej Hajda
72d465aabc drm/exynos/fimc: replace mutex by spinlock
Function fimc_dst_set_buf_seq is called by irq handler
so it should not use mutexes. This patch fixes it.

Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-06-02 02:07:11 +09:00
Andrzej Hajda
acd8afa824 drm/exynos/fimc: replace hw access macros with functions
HW access macros implicitly depended on presence of ctx local variable.
This patch replaces them with C functions.

Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-06-02 02:07:11 +09:00
Andrzej Hajda
8b4609cd80 drm/exynos/fimc: simplify irq masking function
The name fimc_handle_irq suggests it is irq handler, but the function
is for irq mask configuration. The patch renames the function to
fimc_mask_irq and removes unused arguments.

Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-06-02 02:07:11 +09:00
Andrzej Hajda
be6cdfd17c drm/exynos/fimc: simplify pre-scaler ratio calculation
The patch replaces dedicated function for scaling ratio
calculation by fls calls.

Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-06-02 02:07:11 +09:00
Andrzej Hajda
3164605422 drm/exynos/ipp: simplify property list allocation
prop_list is always allocated, so instead of allocating it dynamically
the pointer can be replaced by the structure itself.

Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-06-02 02:07:11 +09:00
Andrzej Hajda
f51bceec03 drm/exynos/ipp: correct ipp_id field initialization
prop_list.ipp_id field is not initialized properly.
The patch fixes it, additionally it removes redundant field from ippdrv.

Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-06-02 02:07:10 +09:00
Andrzej Hajda
396e103e4b drm/exynos/ipp: fix get_property IOCTL
Due to incorrect assignment in EXYNOS_IPP_GET_PROPERTY
IOCTL handler this IOCTL did not work at all.
The patch fixes it.

Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-06-02 02:07:10 +09:00
Sachin Kamat
16337077a8 drm/exynos: Staticize local symbols in exynos_hdmi.c
These symbols are local to this file.

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-06-02 02:07:10 +09:00
Sachin Kamat
7e3a6cc869 drm/exynos: Remove duplicate inclusion of i2c.h
i2c.h was included twice.

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-06-02 02:07:10 +09:00
Sachin Kamat
f46ed1abef drm/exynos: Staticize exynos_dpi_of_find_panel_node
exynos_dpi_of_find_panel_node is local to this file.

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Inki Dae <inki.dae>
2014-06-02 02:07:10 +09:00