GitHub/moto-9609/android_kernel_motorola_exynos9610.git
10 years agodrm/exynos: use irq_flags instead of triggering
Joonyoung Shim [Mon, 17 Nov 2014 13:00:14 +0000 (22:00 +0900)]
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>
10 years agodrm/exynos: fimd: add triggering unset routine in fimd_trigger()
YoungJun Cho [Mon, 17 Nov 2014 13:00:13 +0000 (22:00 +0900)]
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>
10 years agodrm/exynos: fimd: modify I80 i/f irq relevant routine
YoungJun Cho [Mon, 17 Nov 2014 13:00:12 +0000 (22:00 +0900)]
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>
10 years agodrm/exynos: fimd: add fimd_enable_shadow_channel_path() to cleanup
YoungJun Cho [Mon, 17 Nov 2014 13:00:11 +0000 (22:00 +0900)]
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>
10 years agodrm/exynos: fimd: add fimd_enable_video_output() to cleanup
YoungJun Cho [Mon, 17 Nov 2014 13:00:10 +0000 (22:00 +0900)]
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>
10 years agodrm/exynos: fimd: move shadow unprotection position
YoungJun Cho [Mon, 17 Nov 2014 13:00:09 +0000 (22:00 +0900)]
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>
10 years agodrm/exynos: move triggering checking
Joonyoung Shim [Mon, 17 Nov 2014 13:00:08 +0000 (22:00 +0900)]
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>
10 years agodrm/exynos: add has_vtsel flag
Joonyoung Shim [Fri, 14 Nov 2014 02:36:02 +0000 (11:36 +0900)]
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>
10 years agodrm/exynos: Fix DSI resuming fail because power domain being off
Krzysztof Kozlowski [Fri, 7 Nov 2014 13:53:58 +0000 (14:53 +0100)]
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>
10 years agodrm/exynos: dsi: move DSIM_STATE_ENABLED set position
YoungJun Cho [Wed, 1 Oct 2014 06:19:13 +0000 (15:19 +0900)]
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>
10 years agodrm/exynos: fimd: move handle vblank position in TE handler
YoungJun Cho [Wed, 1 Oct 2014 06:19:10 +0000 (15:19 +0900)]
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>
10 years agodrm/exynos: fimd: remove unnecessary waiting vblank routine
YoungJun Cho [Wed, 1 Oct 2014 06:19:07 +0000 (15:19 +0900)]
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>
10 years agodrm/exynos: fimd: support Exynos4415 SoC
YoungJun Cho [Fri, 7 Nov 2014 06:12:25 +0000 (15:12 +0900)]
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>
10 years agodrm/exynos: dsi: support Exynos4415 SoC
YoungJun Cho [Fri, 7 Nov 2014 06:12:24 +0000 (15:12 +0900)]
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>
10 years agodrm/exynos: dp: Remove support for unused dptx-phy
Vivek Gautam [Wed, 12 Nov 2014 09:42:10 +0000 (15:12 +0530)]
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>
10 years agodrm/exynos: remove leftover hdmi function declarations
Gustavo Padovan [Fri, 31 Oct 2014 14:17:43 +0000 (14:17 +0000)]
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>
10 years agodrm/exynos: update documentation to reflect code changes
Gustavo Padovan [Fri, 31 Oct 2014 14:17:42 +0000 (14:17 +0000)]
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>
10 years agodrm/exynos: Save up space using bool var as bitfields
Gustavo Padovan [Thu, 13 Nov 2014 08:25:53 +0000 (17:25 +0900)]
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>
10 years agodrm/exynos: remove unused wait_for macro
Gustavo Padovan [Fri, 31 Oct 2014 14:17:40 +0000 (14:17 +0000)]
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>
10 years agodrm/exynos: Replace repeated declarations by #include "exynos_drm_drv.h"
Gustavo Padovan [Thu, 13 Nov 2014 08:24:06 +0000 (17:24 +0900)]
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>
10 years agodrm/exynos: Replace repeated declaration by include <drm/drmP.h>
Gustavo Padovan [Fri, 31 Oct 2014 14:17:38 +0000 (14:17 +0000)]
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>
10 years agodrm/exynos: remove extra declaration of struct exynos_overlay
Gustavo Padovan [Fri, 31 Oct 2014 14:17:37 +0000 (14:17 +0000)]
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>
10 years agodrm/exynos: remove extra declaration of struct exynos_drm_manager
Gustavo Padovan [Fri, 31 Oct 2014 14:17:36 +0000 (14:17 +0000)]
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>
10 years agodrm/exynos: remove uneeded declaration of struct dma_iommu_mapping
Gustavo Padovan [Fri, 31 Oct 2014 14:17:35 +0000 (14:17 +0000)]
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>
10 years agodrm/exynos: dsi: stop using display->ctx pointer
Andrzej Hajda [Tue, 7 Oct 2014 12:01:11 +0000 (14:01 +0200)]
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>
10 years agodrm/exynos: dsi: remove redundant encoder field
Andrzej Hajda [Tue, 7 Oct 2014 12:01:10 +0000 (14:01 +0200)]
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>
10 years agodrm/exynos: dsi: simplify device pointer evaluation
Andrzej Hajda [Tue, 7 Oct 2014 12:01:09 +0000 (14:01 +0200)]
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>
10 years agodrm/exynos: dsi: remove global variable exynos_dsi_display
Andrzej Hajda [Tue, 7 Oct 2014 12:01:08 +0000 (14:01 +0200)]
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>
10 years agodrm/exynos: remove ifdeferry from initialization code
Andrzej Hajda [Thu, 13 Nov 2014 07:37:57 +0000 (16:37 +0900)]
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>
10 years agodrm/exynos: fix null pointer dereference issue
Inki Dae [Thu, 13 Nov 2014 07:05:12 +0000 (16:05 +0900)]
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>
10 years agodrm/exynos: fix possible infinite loop issue
Inki Dae [Fri, 7 Nov 2014 12:32:34 +0000 (21:32 +0900)]
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>
10 years agodrm/exynos: g2d: fix null pointer dereference
Inki Dae [Fri, 7 Nov 2014 11:31:08 +0000 (20:31 +0900)]
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>
10 years agodrm/exynos: resolve infinite loop issue on non multi-platform
Inki Dae [Thu, 6 Nov 2014 14:00:37 +0000 (23:00 +0900)]
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>
10 years agodrm/exynos: resolve infinite loop issue on multi-platform
Inki Dae [Thu, 6 Nov 2014 10:23:35 +0000 (19:23 +0900)]
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>
10 years agoMerge branch 'drm-next-3.19' of git://people.freedesktop.org/~agd5f/linux into drm...
Dave Airlie [Fri, 21 Nov 2014 02:17:43 +0000 (12:17 +1000)]
Merge branch 'drm-next-3.19' of git://people.freedesktop.org/~agd5f/linux into drm-next

- More CI dpm fixes
- Initial DPM fan control for SI/CI (disabled by default)
- GPUVM multi-ring efficiency improvements
- Some cursor fixes

* 'drm-next-3.19' of git://people.freedesktop.org/~agd5f/linux: (22 commits)
  drm/radeon: update the VM after setting BO address v4
  drm/radeon: sync PT updates as shared v2
  drm/radeon: sync PD updates as shared
  drm/radeon: fence BO_VAs manually
  drm/radeon: use one VMID for each ring
  drm/radeon: track VM update fences separately
  drm/radeon: fence PT updates manually v2
  drm/radeon: split semaphore and sync object handling v2
  drm/radeon: remove unnecessary VM syncs
  drm/radeon: stop re-reserving the BO in radeon_vm_bo_set_addr
  drm/radeon: rework vm_flush parameters
  drm/radeon/ci: disable needless sclk changes
  drm/radeon/ci: force pcie level before sclk and mclk
  drm/radeon/ci: use different smc command for pcie dpm
  drm/radeon/ci: apply disp voltage changes before clk changes
  drm/radeon: fix PCC debugging message for CI DPM
  drm/radeon/dpm: add thermal dpm support for CI
  drm/radeon/dpm: add smc fan control for CI (v2)
  drm/radeon/dpm: add smc fan control for SI (v2)
  drm/radeon: work around a hw bug in MGCG on CIK
  ...

10 years agodrm/vmwgfx: Deletion of an unnecessary check before the function call "vfree"
Markus Elfring [Wed, 19 Nov 2014 16:50:19 +0000 (17:50 +0100)]
drm/vmwgfx: Deletion of an unnecessary check before the function call "vfree"

The vfree() function performes also input parameter validation. Thus the test
around the call is not needed.

This issue was detected by using the Coccinelle software.

Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Reviewed-by: Thierry Reding <thierry.reding@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
10 years agodrm/udl: Deletion of an unnecessary check before the function call "vunmap"
Markus Elfring [Wed, 19 Nov 2014 16:33:32 +0000 (17:33 +0100)]
drm/udl: Deletion of an unnecessary check before the function call "vunmap"

The vunmap() function performes also input parameter validation. Thus the test
around the call is not needed.

This issue was detected by using the Coccinelle software.

Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Reviewed-by: Thierry Reding <thierry.reding@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
10 years agodrm/tilcdc: Deletion of an unnecessary check before the function call "drm_fbdev_cma_...
Markus Elfring [Wed, 19 Nov 2014 16:05:20 +0000 (17:05 +0100)]
drm/tilcdc: Deletion of an unnecessary check before the function call "drm_fbdev_cma_hotplug_event"

The drm_fbdev_cma_hotplug_event() function tests whether its argument is NULL
and then returns immediately. Thus the test around the call is not needed.

This issue was detected by using the Coccinelle software.

Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Reviewed-by: Thierry Reding <thierry.reding@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
10 years agodrm/edid: Deletion of an unnecessary check before the function call "release_firmware"
Markus Elfring [Wed, 19 Nov 2014 15:33:17 +0000 (16:33 +0100)]
drm/edid: Deletion of an unnecessary check before the function call "release_firmware"

The release_firmware() function tests whether its argument is NULL and then
returns immediately. Thus the test around the call is not needed.

This issue was detected by using the Coccinelle software.

Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Reviewed-by: Thierry Reding <thierry.reding@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
10 years agodrm/atomic: Add missing ERR_PTR casting
Daniel Vetter [Thu, 20 Nov 2014 08:53:35 +0000 (09:53 +0100)]
drm/atomic: Add missing ERR_PTR casting

This is an oversight from

commit f52b69f1ecfdd7ef6867a257620258c09e569552
Author: Daniel Vetter <daniel.vetter@ffwll.ch>
Date:   Wed Nov 19 18:38:08 2014 +0100

    drm/atomic: Don't overrun the connector array when hotplugging

Cc: Dave Airlie <airlied@redhat.com>
Cc: Rob Clark <robdclark@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Reviewed-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
10 years agodrm/gem: Warn on illegal use of the dumb buffer interface v2
Thomas Hellstrom [Thu, 20 Nov 2014 08:56:25 +0000 (09:56 +0100)]
drm/gem: Warn on illegal use of the dumb buffer interface v2

It happens on occasion that developers of generic user-space applications
abuse the dumb buffer API to get hold of drm buffers that they can both
mmap() and use for GPU acceleration, using the assumptions that dumb buffers
and buffers available for GPU are
a) The same type and can be aribtrarily type-casted.
b) fully coherent.

This patch makes the most widely used drivers warn nicely when that happens,
the next step will be to fail.

v2: Move drmP.h changes to drm_gem.h. Fix Radeon dumb mmap breakage.

Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
10 years agodrm/radeon: update the VM after setting BO address v4
Christian König [Fri, 12 Sep 2014 10:25:45 +0000 (12:25 +0200)]
drm/radeon: update the VM after setting BO address v4

This way the necessary VM update is kicked off immediately
if all BOs involved are in GPU accessible memory.

v2: fix vm lock
v3: immediately update unmaps as well
v4: use drm_free_large instead of kfree

Tested-by: Kai Wasserbäch <kai@dev.carbon-project.org>
Signed-off-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
10 years agodrm/radeon: sync PT updates as shared v2
Christian König [Wed, 19 Nov 2014 13:01:28 +0000 (14:01 +0100)]
drm/radeon: sync PT updates as shared v2

Only invalidating PTEs needs to be executed synchronized to using the PT.

v2: fix sync to uses

Signed-off-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
10 years agodrm/radeon: sync PD updates as shared
Christian König [Wed, 19 Nov 2014 13:01:27 +0000 (14:01 +0100)]
drm/radeon: sync PD updates as shared

We never invalidate PD entries and making them valid can
run with other users in parallel.

Signed-off-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
10 years agodrm/radeon: fence BO_VAs manually
Christian König [Wed, 19 Nov 2014 13:01:26 +0000 (14:01 +0100)]
drm/radeon: fence BO_VAs manually

This allows us to finally remove the VM fence and
so allow concurrent use of it from different engines.

Signed-off-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
10 years agodrm/radeon: use one VMID for each ring
Christian König [Wed, 19 Nov 2014 13:01:25 +0000 (14:01 +0100)]
drm/radeon: use one VMID for each ring

Use multiple VMIDs for each VM, one for each ring. That allows
us to execute flushes separately on each ring, still not ideal
cause in a lot of cases rings can share IDs.

Signed-off-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
10 years agodrm/radeon: track VM update fences separately
Christian König [Wed, 19 Nov 2014 13:01:24 +0000 (14:01 +0100)]
drm/radeon: track VM update fences separately

Note for each fence if it's a VM page table update or not. This allows
us to determine the last VM update in a sync object and so to figure
out if we need to flush the TLB or not.

Signed-off-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
10 years agodrm/radeon: fence PT updates manually v2
Christian König [Wed, 19 Nov 2014 13:01:23 +0000 (14:01 +0100)]
drm/radeon: fence PT updates manually v2

This allows us to add the real execution fence as shared.

v2: fix typo

Signed-off-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
10 years agodrm/radeon: split semaphore and sync object handling v2
Christian König [Wed, 19 Nov 2014 13:01:22 +0000 (14:01 +0100)]
drm/radeon: split semaphore and sync object handling v2

Previously we just allocated space for four hardware semaphores
in each software semaphore object. Make software semaphore objects
represent only one hardware semaphore address again by splitting
the sync code into it's own object.

v2: fix typo in comment

Signed-off-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
10 years agodrm/radeon: remove unnecessary VM syncs
Christian König [Wed, 19 Nov 2014 13:01:21 +0000 (14:01 +0100)]
drm/radeon: remove unnecessary VM syncs

The PD/PTs reservation object now contains everything needed.

Signed-off-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
10 years agodrm/radeon: stop re-reserving the BO in radeon_vm_bo_set_addr
Christian König [Wed, 19 Nov 2014 13:01:20 +0000 (14:01 +0100)]
drm/radeon: stop re-reserving the BO in radeon_vm_bo_set_addr

That's useless when all callers drop the reservation
immediately after calling the function.

Signed-off-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
10 years agodrm/radeon: rework vm_flush parameters
Christian König [Wed, 19 Nov 2014 13:01:19 +0000 (14:01 +0100)]
drm/radeon: rework vm_flush parameters

Use ring structure instead of index and provide vm_id and pd_addr separately.

Signed-off-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
10 years agodrm/radeon/ci: disable needless sclk changes
Alex Deucher [Tue, 18 Nov 2014 20:07:33 +0000 (15:07 -0500)]
drm/radeon/ci: disable needless sclk changes

The current code always reprogrammed the sclk levels,
but we don't currently handle disp sclk requirements
so just skip it.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
10 years agodrm/radeon/ci: force pcie level before sclk and mclk
Alex Deucher [Tue, 18 Nov 2014 19:40:26 +0000 (14:40 -0500)]
drm/radeon/ci: force pcie level before sclk and mclk

Preferred ordering.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
10 years agodrm/radeon/ci: use different smc command for pcie dpm
Alex Deucher [Tue, 18 Nov 2014 19:36:59 +0000 (14:36 -0500)]
drm/radeon/ci: use different smc command for pcie dpm

Use unforce levels rather than enable mask instruction.
This is the preferred method.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
10 years agodrm/radeon/ci: apply disp voltage changes before clk changes
Alex Deucher [Tue, 18 Nov 2014 19:32:14 +0000 (14:32 -0500)]
drm/radeon/ci: apply disp voltage changes before clk changes

Apply voltage changes for displays before changing clocks.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
10 years agodrm/radeon: fix PCC debugging message for CI DPM
Alex Deucher [Mon, 17 Nov 2014 16:52:48 +0000 (11:52 -0500)]
drm/radeon: fix PCC debugging message for CI DPM

Add missing newline and print the bad gpio shift.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
10 years agodrm/radeon/dpm: add thermal dpm support for CI
Alex Deucher [Mon, 15 Sep 2014 06:15:04 +0000 (02:15 -0400)]
drm/radeon/dpm: add thermal dpm support for CI

Not currently used.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
10 years agodrm/radeon/dpm: add smc fan control for CI (v2)
Alex Deucher [Mon, 15 Sep 2014 04:15:22 +0000 (00:15 -0400)]
drm/radeon/dpm: add smc fan control for CI (v2)

Enable smc fan control for CI boards.  Should
reduce the fan noise on systems with a higher
default fan profile.

v2: disable by default, add additional fan setup, rpm control

bug:
https://bugs.freedesktop.org/show_bug.cgi?id=73338

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
10 years agodrm/radeon/dpm: add smc fan control for SI (v2)
Alex Deucher [Mon, 15 Sep 2014 01:14:14 +0000 (21:14 -0400)]
drm/radeon/dpm: add smc fan control for SI (v2)

Enable smc fan control for SI boards.  Should
reduce the fan noise on systems with a higher
default fan profile.

v2: disable by default, add rpm controls

bug:
https://bugs.freedesktop.org/show_bug.cgi?id=73338

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
10 years agodrm/radeon: work around a hw bug in MGCG on CIK
Alex Deucher [Mon, 17 Nov 2014 20:08:17 +0000 (15:08 -0500)]
drm/radeon: work around a hw bug in MGCG on CIK

Always need to set bit 0 of RLC_CGTT_MGCG_OVERRIDE
to avoid unreliable doorbell updates in some cases.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
10 years agodrm/radeon: Move radeon_cursor_move(_locked) to replace forward declaration
Michel Dänzer [Tue, 18 Nov 2014 09:00:09 +0000 (18:00 +0900)]
drm/radeon: Move radeon_cursor_move(_locked) to replace forward declaration

No functional change.

Signed-off-by: Michel Dänzer <michel.daenzer@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
10 years agodrm/radeon: Use cursor_set2 hook for enabling / disabling the HW cursor
Michel Dänzer [Tue, 18 Nov 2014 09:00:08 +0000 (18:00 +0900)]
drm/radeon: Use cursor_set2 hook for enabling / disabling the HW cursor

The cursor_set2 hook provides the cursor hotspot position within the
cursor image. When the hotspot position changes, we can adjust the cursor
position such that the hotspot doesn't move on the screen. This prevents
the cursor from appearing to intermittently jump around on the screen
when the position of the hotspot within the cursor image changes.

Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Michel Dänzer <michel.daenzer@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
10 years agoMerge branch 'amdkfd-v6' of git://people.freedesktop.org/~gabbayo/linux into drm...
Dave Airlie [Thu, 20 Nov 2014 04:32:32 +0000 (14:32 +1000)]
Merge branch 'amdkfd-v6' of git://people.freedesktop.org/~gabbayo/linux into drm-next

Merge AMDKFD it seems clean enough.
* 'amdkfd-v6' of git://people.freedesktop.org/~gabbayo/linux: (29 commits)
  amdkfd: Implement the Get Version IOCTL
  amdkfd: Implement the Get Process Aperture IOCTL
  amdkfd: Implement the Get Clock Counters IOCTL
  amdkfd: Implement the Set Memory Policy IOCTL
  amdkfd: Implement the create/destroy/update queue IOCTLs
  amdkfd: Add interrupt handling module
  amdkfd: Add device queue manager module
  amdkfd: Add process queue manager module
  amdkfd: Add packet manager module
  amdkfd: Add module parameter of scheduling policy
  amdkfd: Add kernel queue module
  amdkfd: Add mqd_manager module
  amdkfd: Add queue module
  amdkfd: Add binding/unbinding calls to amd_iommu driver
  amdkfd: Add basic modules to amdkfd
  amdkfd: Add topology module to amdkfd
  amdkfd: Add amdkfd skeleton driver
  amdkfd: Add IOCTL set definitions of amdkfd
  Update MAINTAINERS and CREDITS files with amdkfd info
  drm/radeon: Add radeon <--> amdkfd interface
  ...

10 years agodrm/cirrus: allow 32bpp framebuffers for cirrus drm
Zach Reizner [Wed, 29 Oct 2014 18:04:24 +0000 (11:04 -0700)]
drm/cirrus: allow 32bpp framebuffers for cirrus drm

This patch allows framebuffers for cirrus to be created with
32bpp pixel formats provided that they do not violate certain
restrictions of the cirrus hardware.

v2: Use pci resource length for vram size.

Signed-off-by: Zach Reizner <zachr@google.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
10 years agodrm/udl: add support to export a handle to a FD on UDL.
Haixia Shi [Thu, 13 Nov 2014 02:33:53 +0000 (18:33 -0800)]
drm/udl: add support to export a handle to a FD on UDL.

Only importing an FD to a handle is currently supported on UDL,
but the exporting functionality is equally useful.

Signed-off-by: Haixia Shi <hshi@chromium.org>
Reviewed-by: Stéphane Marchesin <marcheu@chromium.org>
Signed-off-by: Dave Airlie <airlied@redhat.com>
10 years agodrm/udl: add cache flags definitions for udl_gem_object
Haixia Shi [Thu, 13 Nov 2014 02:33:52 +0000 (18:33 -0800)]
drm/udl: add cache flags definitions for udl_gem_object

By default set udl_gem_object as cacheable, but set WC flag when attaching
dmabuf. In udl_gem_mmap() update cache attributes based on the flags, similar
to exynos_drm_gem_mmap().

Signed-off-by: Haixia Shi <hshi@chromium.org>
Reviewed-by: Sonny Rao <sonnyrao@chromium.org>
Reviewed-by: Olof Johansson <olofj@chromium.org>
Reviewed-by: Stéphane Marchesin <marcheu@chromium.org>
Signed-off-by: Dave Airlie <airlied@redhat.com>
10 years agodrm/cirrus: fix leaky driver load error handling
Zach Reizner [Tue, 18 Nov 2014 01:19:41 +0000 (17:19 -0800)]
drm/cirrus: fix leaky driver load error handling

Before this patch, cirrus_device_init could have failed while
cirrus_mm_init succeeded and the driver would have reported overall
success on load. This patch causes cirrus_device_init to return on
the first error encountered.

Reviewed-by: Stéphane Marchesin <marcheu@chromium.org>
Signed-off-by: Dave Airlie <airlied@redhat.com>
10 years agodrm/atomic_helper: Make it clear that commit_planes gets the old state
Daniel Vetter [Wed, 19 Nov 2014 17:38:11 +0000 (18:38 +0100)]
drm/atomic_helper: Make it clear that commit_planes gets the old state

Oversight from my kerneldoc cleanup when doing the original atomic
helper series - I've only applied this clarification to the modeset
related helpers, and not the plane update code. Remedy this asap.

Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Reviewed-by: Rob Clark <robdclark@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
10 years agodrm: s/enum_blob_list/enum_list/ in drm_property
Daniel Vetter [Wed, 19 Nov 2014 17:38:10 +0000 (18:38 +0100)]
drm: s/enum_blob_list/enum_list/ in drm_property

I guess for hysterical raisins this was meant to be the way to read
blob properties. But that's done with the two-stage approach which
uses separate blob kms object and the special-purpose get_blob ioctl.

Shipping userspace seems to have never relied on this, and the kernel
also never put any blob thing onto that property. And nowadays it
would blow up, e.g. in drm_property_destroy. Also it makes no sense to
return values in an ioctl that only returns metadata about everything.

So let's ditch all the internal code for the blob list, rename the
list to be unambiguous and sprinkle comments all over the place to
explain this peculiar piece of api.

v2: Squash in fixup from Rob to remove now unused variables.

Cc: Rob Clark <robdclark@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Reviewed-by: Rob Clark <robdclark@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
10 years agodrm/crtc: Polish kerneldoc
Daniel Vetter [Wed, 19 Nov 2014 17:38:09 +0000 (18:38 +0100)]
drm/crtc: Polish kerneldoc

- Make it clear that it's a negative errno (more in line with
  everything else).
- Clean up the confusion around get_properties vs. getproperty ioctls:
  One reads per-obj property values, the other reads property
  metadata.

Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Reviewed-by: Rob Clark <robdclark@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
10 years agodrm/atomic: Don't overrun the connector array when hotplugging
Daniel Vetter [Wed, 19 Nov 2014 17:38:08 +0000 (18:38 +0100)]
drm/atomic: Don't overrun the connector array when hotplugging

Yet another fallout from not considering DP MST hotplug. With the
previous patches we have stable indices, but it might still happen
that a connector gets added between when we allocate the array and
when we actually add a connector. Especially when we back off due to
ww mutex contention or similar issues.

So store the sizes of the arrays in struct drm_atomic_state and double
check them. We don't really care about races except that we want to
use a consistent value, so ACCESS_ONCE is all we need. And if we
indeed notice that we'd overrun the array then just give up and
restart the entire ioctl.

Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Reviewed-by: Rob Clark <robdclark@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
10 years agodrm/atomic: Only destroy connector states with connection mutex held
Daniel Vetter [Wed, 19 Nov 2014 17:38:07 +0000 (18:38 +0100)]
drm/atomic: Only destroy connector states with connection mutex held

Otherwise the connector might have been unplugged and destroyed while
we didn't look. Yet another fallout from DP MST hotplugging that I
didn't consider.

To make sure we get this right add an appropriate WARN_ON to
drm_atomic_state_clear (obviously only when we actually have a state
to clear up). And reorder all the state_clear and backoff calls to
make it work out properly.

Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Reviewed-by: Rob Clark <robdclark@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
10 years agodrm/atomic: Ensure that drm_connector_index is stable
Daniel Vetter [Wed, 19 Nov 2014 17:38:06 +0000 (18:38 +0100)]
drm/atomic: Ensure that drm_connector_index is stable

I've totally forgotten that with DP MST connectors can now be
hotplugged. And failed to adapt Rob's drm_atomic_state code (which
predates connector hotplugging) to the new realities.

The first step is to make sure that the connector indices used to
access the arrays of pointers are stable. The connection mutex gives
us enough guarantees for that, which means we won't unecessarily block
on concurrent modesets or background probing.

So add a locking WARN_ON and shuffle the code slightly to make sure we
always hold the right lock.

Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Reviewed-by: Rob Clark <robdclark@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
10 years agodrm/irq: BUG_ON() -> WARN_ON()
Rob Clark [Sat, 8 Nov 2014 15:16:19 +0000 (10:16 -0500)]
drm/irq: BUG_ON() -> WARN_ON()

Let's make things a bit easier to debug when things go bad (potentially
under console_lock).

Signed-off-by: Rob Clark <robdclark@gmail.com>
Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
10 years agodrm/ttm: Avoid memory allocation from shrinker functions.
Tetsuo Handa [Thu, 13 Nov 2014 13:43:23 +0000 (22:43 +0900)]
drm/ttm: Avoid memory allocation from shrinker functions.

Andrew Morton wrote:
> On Wed, 12 Nov 2014 13:08:55 +0900 Tetsuo Handa <penguin-kernel@i-love.sakura.ne.jp> wrote:
>
> > Andrew Morton wrote:
> > > Poor ttm guys - this is a bit of a trap we set for them.
> >
> > Commit a91576d7916f6cce ("drm/ttm: Pass GFP flags in order to avoid deadlock.")
> > changed to use sc->gfp_mask rather than GFP_KERNEL.
> >
> > -       pages_to_free = kmalloc(npages_to_free * sizeof(struct page *),
> > -                       GFP_KERNEL);
> > +       pages_to_free = kmalloc(npages_to_free * sizeof(struct page *), gfp);
> >
> > But this bug is caused by sc->gfp_mask containing some flags which are not
> > in GFP_KERNEL, right? Then, I think
> >
> > -       pages_to_free = kmalloc(npages_to_free * sizeof(struct page *), gfp);
> > +       pages_to_free = kmalloc(npages_to_free * sizeof(struct page *), gfp & GFP_KERNEL);
> >
> > would hide this bug.
> >
> > But I think we should use GFP_ATOMIC (or drop __GFP_WAIT flag)
>
> Well no - ttm_page_pool_free() should stop calling kmalloc altogether.
> Just do
>
>  struct page *pages_to_free[16];
>
> and rework the code to free 16 pages at a time.  Easy.

Well, ttm code wants to process 512 pages at a time for performance.
Memory footprint increased by 512 * sizeof(struct page *) buffer is
only 4096 bytes. What about using static buffer like below?
----------
>From d3cb5393c9c8099d6b37e769f78c31af1541fe8c Mon Sep 17 00:00:00 2001
From: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Date: Thu, 13 Nov 2014 22:21:54 +0900
Subject: [PATCH] drm/ttm: Avoid memory allocation from shrinker functions.

Commit a91576d7916f6cce ("drm/ttm: Pass GFP flags in order to avoid
deadlock.") caused BUG_ON() due to sc->gfp_mask containing flags
which are not in GFP_KERNEL.

  https://bugzilla.kernel.org/show_bug.cgi?id=87891

Changing from sc->gfp_mask to (sc->gfp_mask & GFP_KERNEL) would
avoid the BUG_ON(), but avoiding memory allocation from shrinker
function is better and reliable fix.

Shrinker function is already serialized by global lock, and
clean up function is called after shrinker function is unregistered.
Thus, we can use static buffer when called from shrinker function
and clean up function.

Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Cc: stable <stable@kernel.org> [2.6.35+]
Signed-off-by: Dave Airlie <airlied@redhat.com>
10 years agodrm: remove unnecessary sizeof(u8)
Fabian Frederick [Sun, 16 Nov 2014 10:21:25 +0000 (11:21 +0100)]
drm: remove unnecessary sizeof(u8)

sizeof(u8) is always 1.

Signed-off-by: Fabian Frederick <fabf@skynet.be>
Signed-off-by: Dave Airlie <airlied@redhat.com>
10 years agodrm: omapdrm: remove unused variable
Boris BREZILLON [Mon, 17 Nov 2014 10:21:08 +0000 (11:21 +0100)]
drm: omapdrm: remove unused variable

Commit f9b9faf6d94dd29eab8c128905c7d091f955481d "drm: flip-work: change
drm_flip_work_init prototype" changed the drm_flip_work_init prototype
to a void function, which makes 'ret' an unused variable.

Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
10 years agobochs: add page_flip
Gerd Hoffmann [Wed, 19 Nov 2014 11:28:12 +0000 (12:28 +0100)]
bochs: add page_flip

Implement crtc page_flip callback for bochsdrm.  The qemu stdvga has no
vblank signaling, so we have to fake it.  We do so by instantly calling
drm_send_vblank_event.  Tested with kmscon.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
10 years agobochs: fix bochsdrmfb mmap
Gerd Hoffmann [Wed, 19 Nov 2014 11:28:11 +0000 (12:28 +0100)]
bochs: fix bochsdrmfb mmap

Remove the mapping offset from the bo backing the fbdev framebuffer.
Wire up fbdev mmap function to map the backing bo using ttm_fbdev_mmap.
With that patch in place mmap(/dev/fb0) works as expected.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
10 years agobochs: add endian switching support
Gerd Hoffmann [Wed, 19 Nov 2014 11:28:10 +0000 (12:28 +0100)]
bochs: add endian switching support

Recently (qemu 2.2+) the qemu stdvga got a register to switch the vga
framebuffer endianness.  This patch adds code to explicitly set the
endianness of the framebuffer.  In most cases this has no effect as
the default is guest architecture endianness.  It is needed though in
case a architecture supports both big and little endian, i.e. for
ppc64le.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
10 years agobochs: little cleanup
Gerd Hoffmann [Wed, 19 Nov 2014 11:28:09 +0000 (12:28 +0100)]
bochs: little cleanup

Drop some leftover, commented code.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
10 years agoMerge branch 'msm-next' of git://people.freedesktop.org/~robclark/linux into drm...
Dave Airlie [Sun, 16 Nov 2014 20:36:53 +0000 (06:36 +1000)]
Merge branch 'msm-next' of git://people.freedesktop.org/~robclark/linux into drm-next

Main pull for 3.19.  I may have another pull in a few days with some
mdp5 bits (and hopefully mdp5 atomic), but I figured there was no need
to hold up what we have already.  Main highlights so far:

1) a4xx gpu support (userspace gallium bits on mesa master)
2) mdp4/hdmi/core bits for atomic helpers.  Still missing mdp5
conversion, main hold up there is current hard-coded mixer setup isn't
clever enough to deal with disabling primary plane while crtc active.
3) various other misc cleanup/fixes/etc..

* 'msm-next' of git://people.freedesktop.org/~robclark/linux: (21 commits)
  drm/msm: a4xx support for msm-drm
  drm/msm: Handle register offset differences between a3xx and a4xx
  drm/msm: small mmap offset cleanups
  drm/msm/mdp4: atomic
  drm/msm/hdmi: atomic
  drm/msm: atomic core bits
  drm/msm: bit of fb error checking
  drm/msm: fb prepare/cleanup
  drm/msm: remove unused compile-test stub
  drm/msm: small fence cleanup
  drm/msm/mdp5: drop attached planes table
  drm/msm/mdp4: drop attached planes table
  drm/msm/mdp4: don't care about fb in crtc
  drm/msm/mdp5: drop private primary ptr
  drm/msm/mdp4: drop private primary ptr
  drm/msm: Fix fbdev for 16- and 24-bit modes.
  drm/msm: Allow exported dma-bufs to be mapped
  drm/msm/hdmi: refactor bind/init
  drm/msm: update generated headers
  drm/msm/adreno: slight init order cleanup
  ...

10 years agodrm/msm: a4xx support for msm-drm
Aravind Ganesan [Mon, 8 Sep 2014 19:40:16 +0000 (13:40 -0600)]
drm/msm: a4xx support for msm-drm

Added a4xx GPU support.

Signed-off-by: Aravind Ganesan <aravindg@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>
10 years agodrm/msm: Handle register offset differences between a3xx and a4xx
Aravind Ganesan [Mon, 8 Sep 2014 16:57:28 +0000 (10:57 -0600)]
drm/msm: Handle register offset differences between a3xx and a4xx

Register offsets have changed between a3xx and a4xx GPUs.
To be able access these registers in common code, we create
a lookup table, and set of read-write APIs to access the
register through the lookup table.

Signed-off-by: Aravind Ganesan <aravindg@codeaurora.org>
[robclark: remove REG_ADRENO_UNDEFINED, just use zero, and minor
tweaks for latest generated headers]
Signed-off-by: Rob Clark <robdclark@gmail.com>
10 years agodrm/msm: small mmap offset cleanups
Rob Clark [Wed, 12 Nov 2014 20:25:50 +0000 (15:25 -0500)]
drm/msm: small mmap offset cleanups

Use pre-computed iova when unmapping, to reduce the places we assume iova
and mmap offset are (at the moment) the same.  And get rid of an extra
drm_gem_free_mmap_offset() call (since it is already called from
drm_gem_object_release())

Signed-off-by: Rob Clark <robdclark@gmail.com>
10 years agodrm/msm/mdp4: atomic
Rob Clark [Sat, 8 Nov 2014 18:24:08 +0000 (13:24 -0500)]
drm/msm/mdp4: atomic

Convert mdp4 display controller backend to atomic helpers.

Signed-off-by: Rob Clark <robdclark@gmail.com>
10 years agodrm/msm/hdmi: atomic
Rob Clark [Sat, 8 Nov 2014 18:23:07 +0000 (13:23 -0500)]
drm/msm/hdmi: atomic

Signed-off-by: Rob Clark <robdclark@gmail.com>
10 years agodrm/msm: atomic core bits
Rob Clark [Sat, 8 Nov 2014 18:21:06 +0000 (13:21 -0500)]
drm/msm: atomic core bits

The core parts for async commit.

Signed-off-by: Rob Clark <robdclark@gmail.com>
10 years agodrm/msm: bit of fb error checking
Rob Clark [Sat, 8 Nov 2014 14:20:28 +0000 (09:20 -0500)]
drm/msm: bit of fb error checking

It's a problem that can't happen yet, since we don't support any
multi-planar formats yet.  But let's avoid nasty surprises when the
time comes.

Signed-off-by: Rob Clark <robdclark@gmail.com>
10 years agodrm/msm: fb prepare/cleanup
Rob Clark [Sat, 8 Nov 2014 14:13:37 +0000 (09:13 -0500)]
drm/msm: fb prepare/cleanup

Atomic wants to split the prepare/pin from where we actually program the
scanout address (so that any part that can fail is done synchronously).
Add some fb/gem apis to make this easier to use from the kms parts.

Signed-off-by: Rob Clark <robdclark@gmail.com>
10 years agodrm/msm: remove unused compile-test stub
Rob Clark [Fri, 7 Nov 2014 23:11:02 +0000 (18:11 -0500)]
drm/msm: remove unused compile-test stub

Signed-off-by: Rob Clark <robdclark@gmail.com>
10 years agodrm/msm: small fence cleanup
Rob Clark [Fri, 7 Nov 2014 23:10:04 +0000 (18:10 -0500)]
drm/msm: small fence cleanup

Give ourselves a way to wait for certain fence #..  makes it easier to
wait on a set of bo's, which we'll need for atomic.

Signed-off-by: Rob Clark <robdclark@gmail.com>
10 years agodrm/msm/mdp5: drop attached planes table
Rob Clark [Wed, 12 Nov 2014 16:37:12 +0000 (11:37 -0500)]
drm/msm/mdp5: drop attached planes table

Simplify things a bit for atomic, gets rid of some bookkeeping, and
makes the code cleaner.

Signed-off-by: Rob Clark <robdclark@gmail.com>
10 years agodrm/msm/mdp4: drop attached planes table
Rob Clark [Fri, 7 Nov 2014 18:20:50 +0000 (13:20 -0500)]
drm/msm/mdp4: drop attached planes table

Simplify things a bit for atomic, gets rid of some bookkeeping, and
makes the code cleaner.

TODO move iterator macro somewhere common.

Signed-off-by: Rob Clark <robdclark@gmail.com>
10 years agodrm/msm/mdp4: don't care about fb in crtc
Rob Clark [Fri, 7 Nov 2014 18:06:54 +0000 (13:06 -0500)]
drm/msm/mdp4: don't care about fb in crtc

Since we are configuring things via MDP4_PIPE regs in the plane, it seems
like setting the dimensions of the primary plane on the OVLP/DMA regs in
crtc is unnecessary.  This will make life easier when we want to do a
nofb modeset.

Signed-off-by: Rob Clark <robdclark@gmail.com>
10 years agodrm/msm/mdp5: drop private primary ptr
Rob Clark [Wed, 12 Nov 2014 16:22:19 +0000 (11:22 -0500)]
drm/msm/mdp5: drop private primary ptr

Since primary-plane support in core, we can just use crtc->primary.

Signed-off-by: Rob Clark <robdclark@gmail.com>
10 years agodrm/msm/mdp4: drop private primary ptr
Rob Clark [Fri, 7 Nov 2014 18:04:51 +0000 (13:04 -0500)]
drm/msm/mdp4: drop private primary ptr

Since primary-plane support in core, we can just use crtc->primary.

Signed-off-by: Rob Clark <robdclark@gmail.com>
10 years agodrm/msm: Fix fbdev for 16- and 24-bit modes.
Daniel Thompson [Fri, 17 Oct 2014 15:48:54 +0000 (16:48 +0100)]
drm/msm: Fix fbdev for 16- and 24-bit modes.

Currently forcing the video mode from the kernel command line (for example
video=HDMI-A-1:1280x720-16@60) does not correctly set the number of bits
per pixel. This is due to a rather aggressive override in
msm_fbdev_create(). This is a particular problem for Android bring up
because the software EGL fallbacks don't support 32bpp.

Since the overrides are actually the default values anyway then this
problem can be trivially fixed by removing the overrides completely.

Change was tested by dd'ing a test image to /dev/fb0 with no video=
(still 32bpp), video=1920x1080-32@60, video=1920x1080-24@60 and
video=1920x1080-16@60 .

Signed-off-by: Daniel Thompson <daniel.thompson@linaro.org>
Cc: David Airlie <airlied@linux.ie>
Cc: Rob Clark <robdclark@gmail.com>
Signed-off-by: Rob Clark <robdclark@gmail.com>
10 years agodrm/msm: Allow exported dma-bufs to be mapped
Daniel Thompson [Wed, 12 Nov 2014 11:38:14 +0000 (11:38 +0000)]
drm/msm: Allow exported dma-bufs to be mapped

Currently msm does not implement gem_prime_mmap. Without this it is not
possible to draw onto a dma-buf from userspace (making its very hard to
implement the Android rendering model).

Fixing this is just a matter of adding a little boilerplate.

Signed-off-by: Daniel Thompson <daniel.thompson@linaro.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>