43049 Commits

Author SHA1 Message Date
Suman Anna
deb9f54ef3 ARM: DRA7: hwmod data: Remove spinlock hwmod addrs
The legacy-style device creation logic for hwspinlock
has been removed after the DT-support was added to the
driver. The hwmod addr space for spinlock is therefore
no longer needed, so remove it.

Signed-off-by: Suman Anna <s-anna@ti.com>
Signed-off-by: Paul Walmsley <paul@pwsan.com>
2015-10-23 13:01:24 -06:00
Suman Anna
8aeff38207 ARM: OMAP4: hwmod data: Remove spinlock hwmod addrs
The legacy-style device creation logic for hwspinlock
has been removed after the DT-support was added to the
driver. The hwmod addr space for spinlock is therefore
no longer needed, so remove it.

Signed-off-by: Suman Anna <s-anna@ti.com>
Signed-off-by: Paul Walmsley <paul@pwsan.com>
2015-10-23 13:01:24 -06:00
Franklin S Cooper Jr
e7f73d61ad ARM: DRA7/AM335x/AM437x: hwmod: Remove gpmc address space from hwmod data
GPMC address information is provided by device tree. No longer need
to include this information within hwmod.

Signed-off-by: Franklin S Cooper Jr <fcooper@ti.com>
Acked-by: Roger Quadros <rogerq@ti.com>
[paul@pwsan.com: fixed chip names in subject line]
Signed-off-by: Paul Walmsley <paul@pwsan.com>
2015-10-23 13:01:24 -06:00
Jaehoon Chung
b29dd5fa56 ARM: dts: use exynos5420-dw-mshc compatible for exynos3250
There are some differences of mobile storage host between exynos3250
and exnos5250. For example, exynos3250 supports the HS400 mode, but
exynos5250 doesn't support it.
Since exynos3250 can perform the similar function with exynos5420
compatible, this patch changes the compatible from exynos5250 to
exynos5420 for mshc.

Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com>
Reviewed-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: Kukjin Kim <kgene@kernel.org>
2015-10-24 03:42:02 +09:00
Ley Foon Tan
0ab089c254 ARM: Add msi.h to Kbuild
Include asm-generic/msi.h to support CONFIG_GENERIC_MSI_IRQ_DOMAIN.
This fixes a compilation error:

  include/linux/msi.h:123:21: fatal error: asm/msi.h: No such file or directory

Signed-off-by: Ley Foon Tan <lftan@altera.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2015-10-23 13:06:27 -05:00
Olof Johansson
302f9f6b16 The i.MX defconfig updates for 4.4:
- Enable i.MX6UL touchscreen controller support.
  - Remove CONFIG_VMSPLIT_2G option since we already enabled
    CONFIG_HIGHMEM support.
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Merge tag 'imx-defconfig-4.4' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux into next/defconfig

The i.MX defconfig updates for 4.4:
 - Enable i.MX6UL touchscreen controller support.
 - Remove CONFIG_VMSPLIT_2G option since we already enabled
   CONFIG_HIGHMEM support.

* tag 'imx-defconfig-4.4' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux:
  ARM: imx_v6_v7_defconfig: Remove CONFIG_VMSPLIT_2G
  ARM: imx_v6_v7_defconfig: enable imx6ul_tsc

Signed-off-by: Olof Johansson <olof@lixom.net>
2015-10-23 10:56:01 -07:00
Olof Johansson
355d1ef1ad The i.MX device tree changes for 4.4:
- Add IOMUXC LPSR (Low Power State Retention) device for i.MX7D.
  - Add a few low power mode related devices and touch controller for
    i.MX6UL.
  - Add a number of devices for i.MX7D SDB board support, USB, Dual FEC,
    and eMMC5.0.
  - i.MX6 Boundary Devices updates: relicense under GPLv2/X11, add Okaya
    LCD, touch and wifi support, add new boards Nitrogen6_Lite and
    Nitrogen6_Max.
  - Enable touch screen and NAND Flash controller for a few Vybrid
    devices.
  - Some random and small updates on LS1021A and MXS support.
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Merge tag 'imx-dt-4.4' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux into next/dt

The i.MX device tree changes for 4.4:
 - Add IOMUXC LPSR (Low Power State Retention) device for i.MX7D.
 - Add a few low power mode related devices and touch controller for
   i.MX6UL.
 - Add a number of devices for i.MX7D SDB board support, USB, Dual FEC,
   and eMMC5.0.
 - i.MX6 Boundary Devices updates: relicense under GPLv2/X11, add Okaya
   LCD, touch and wifi support, add new boards Nitrogen6_Lite and
   Nitrogen6_Max.
 - Enable touch screen and NAND Flash controller for a few Vybrid
   devices.
 - Some random and small updates on LS1021A and MXS support.

* tag 'imx-dt-4.4' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux: (53 commits)
  ARM: dts: ls1021a: Add quirk for Erratum A009116
  ARM: imx6sx-sdb: Fix typo in regulator enable GPIO property
  ARM: dts: imx6: phyFLEX: fix typo in "pinctrl-names"
  ARM: dts: imx6: change the core clock of spdif
  ARM: dts: vf-colibri: enable NAND flash controller
  ARM: dts: vf610twr: add NAND flash controller peripherial
  ARM: dts: imx: add Boundary Devices Nitrogen6_Lite board
  ARM: dts: imx: add Boundary Devices Nitrogen6_Max board
  ARM: dts: imx6dl-nitrogen6x: change manufacturer to Boundary Devices
  ARM: dts: imx6q-nitrogen6x: change manufacturer to Boundary Devices
  of: Add Boundary Devices Inc. vendor prefix
  ARM: dts: imx6qdl-sabrelite: relicense under GPLv2/X11
  ARM: dts: imx6qdl-nitrogen6x: relicense under GPLv2/X11
  ARM: dts: imx6qdl-nitrogen6x: add wifi wl1271 support
  ARM: dts: imx6dql-nitrogen6x: add touchscreen support
  ARM: dts: imx6qdl-sabrelite: add Okaya LCD panel
  ARM: dts: imx6qdl-nitrogen6x: add Okaya LCD panel
  ARM: dts: vf500-colibri: Add device tree node for touchscreen support
  ARM: dts: i.MX35: fix cpu compatible value
  ARM: dts: i.MX31: fix cpu compatible value
  ...

Signed-off-by: Olof Johansson <olof@lixom.net>
2015-10-23 10:51:21 -07:00
Olof Johansson
fa54cda779 The i.MX SoC updates for 4.4:
- Enable suspend and cpufreq support for i.MX6UL
  - Add platform level ENET initialization support for i.MX7D
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Merge tag 'imx-soc-4.4' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux into next/soc

The i.MX SoC updates for 4.4:
 - Enable suspend and cpufreq support for i.MX6UL
 - Add platform level ENET initialization support for i.MX7D

* tag 'imx-soc-4.4' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux:
  ARM: imx: add cpufreq device for imx6ul
  ARM: imx: add enet init for i.MX7D platform
  ARM: imx7d: add imx7d iomux-gpr field define
  ARM: imx: add suspend/resume support for i.mx6ul

Signed-off-by: Olof Johansson <olof@lixom.net>
2015-10-23 10:49:47 -07:00
Olof Johansson
de0b2a545c Delete regulator-compatible usage in mt8135-evbp1.dts.
The regualtor-compatible binding is deprecated, instead the node name
 is used.
 
 Mediatek timer driver supports as well mt8127, mt8135 and mt8173. Add
 these SOCs to the bindings list.
 
 Power domains venc and venc_lt need clocks two extra clocks to access
 their registers. We update the bindings documentation about this.
 
 Update SMP bindings documentation by adding support for mt6589 and mt81xx SOCs.
 
 Update mt8127.dtsi and mt8135.dtsi to enable SMP support.
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Merge tag 'v4.3-next-dts' of https://github.com/mbgg/linux-mediatek into next/dt

Delete regulator-compatible usage in mt8135-evbp1.dts.
The regualtor-compatible binding is deprecated, instead the node name
is used.

Mediatek timer driver supports as well mt8127, mt8135 and mt8173. Add
these SOCs to the bindings list.

Power domains venc and venc_lt need clocks two extra clocks to access
their registers. We update the bindings documentation about this.

Update SMP bindings documentation by adding support for mt6589 and mt81xx SOCs.

Update mt8127.dtsi and mt8135.dtsi to enable SMP support.

* tag 'v4.3-next-dts' of https://github.com/mbgg/linux-mediatek:
  ARM: dts: mt8127: enable basic SMP bringup for mt8127
  ARM: dts: mt8135: enable basic SMP bringup for mt8135
  devicetree: bindings: add new SMP enable method Mediatek SoC
  dt-bindings: soc: Add clocks for Mediatek SCPSYS unit
  dt-bindings: add more MediaTek SoC to mtk-timer binding
  ARM: dts: mt8135-evbp1: remove regulator-compatible usage

Signed-off-by: Olof Johansson <olof@lixom.net>
2015-10-23 10:24:44 -07:00
Olof Johansson
00b24d4454 Do the initial setting of the pmic wrap interrupt before requesting the interrupt.
This fixes the corner-case where the pmic is initialized by the bootloader, but
 not the pmic watchdog.
 
 Add support for active wakeup to the scpsys. This allows to keep the power of
 a scpsys domain  during suspend state.
 
 With version v4.3 new subsystem clocks are added to the clock dirver. In late
 init the kernel turns off all unused clocks. This can provoke a hang if
 the kernel tries to access the venc and venc_lt power domain registers.
 Add the necessary parent clocks for this power domains to
 the scpsys so that no random hang happens.
 
 The bootloader of mt6589, mt8135 and mt1827 does not turn on the arm-arch-timer.
 As there is no opensource bootloader in the near future for this architectures
 we enable the arch timer at kernel boot. We need the arch timer for SMP boot.
 
 Add support for SMP on mt6589, mt8127 and mt8135.
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Merge tag 'v4.3-next-soc' of https://github.com/mbgg/linux-mediatek into next/soc

Do the initial setting of the pmic wrap interrupt before requesting the interrupt.
This fixes the corner-case where the pmic is initialized by the bootloader, but
not the pmic watchdog.

Add support for active wakeup to the scpsys. This allows to keep the power of
a scpsys domain  during suspend state.

With version v4.3 new subsystem clocks are added to the clock dirver. In late
init the kernel turns off all unused clocks. This can provoke a hang if
the kernel tries to access the venc and venc_lt power domain registers.
Add the necessary parent clocks for this power domains to
the scpsys so that no random hang happens.

The bootloader of mt6589, mt8135 and mt1827 does not turn on the arm-arch-timer.
As there is no opensource bootloader in the near future for this architectures
we enable the arch timer at kernel boot. We need the arch timer for SMP boot.

Add support for SMP on mt6589, mt8127 and mt8135.

* tag 'v4.3-next-soc' of https://github.com/mbgg/linux-mediatek:
  ARM: mediatek: add smp bringup code
  ARM: mediatek: enable gpt6 on boot up to make arch timer working
  soc: mediatek: Fix random hang up issue while kernel init
  soc: mediatek: add scpsys support active_wakeup
  soc: mediatek: Move the initial setting of pmic wrap interrupt before requesting irq.

Signed-off-by: Olof Johansson <olof@lixom.net>
2015-10-23 10:22:05 -07:00
Olof Johansson
57dbe1baac Allwinner defconfig changes for 4.4
A bunch of defconfig changes to enable support for new drivers.
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Merge tag 'sunxi-defconfig-for-4.4' of https://git.kernel.org/pub/scm/linux/kernel/git/mripard/linux into next/defconfig

Allwinner defconfig changes for 4.4

A bunch of defconfig changes to enable support for new drivers.

* tag 'sunxi-defconfig-for-4.4' of https://git.kernel.org/pub/scm/linux/kernel/git/mripard/linux:
  ARM: sunxi_defconfig: enable MODULE_UNLOAD
  can: Allwinner A10/A20 CAN Controller support - Defconfig
  can: Allwinner A10/A20 CAN Controller support - Defconfig
  ARM: sunxi_defconfig: Enable LRADC keys (KEYBOARD_SUN4I_LRADC)

Signed-off-by: Olof Johansson <olof@lixom.net>
2015-10-23 10:20:34 -07:00
Olof Johansson
fc1f61f1c0 Allwinner core changes for 4.4
Add support for the Allwinner R8 SoC used in the CHIP.
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Merge tag 'sunxi-core-for-4.4' of https://git.kernel.org/pub/scm/linux/kernel/git/mripard/linux into next/soc

Allwinner core changes for 4.4

Add support for the Allwinner R8 SoC used in the CHIP.

* tag 'sunxi-core-for-4.4' of https://git.kernel.org/pub/scm/linux/kernel/git/mripard/linux:
  ARM: sunxi: Add R8 support

Signed-off-by: Olof Johansson <olof@lixom.net>
2015-10-23 10:19:36 -07:00
Olof Johansson
4751424117 SPDIF device nodes for the newly added driver.
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Merge tag 'v4.4-rockchip-dts32-2' of git://git.kernel.org/pub/scm/linux/kernel/git/mmind/linux-rockchip into next/dt

SPDIF device nodes for the newly added driver.

* tag 'v4.4-rockchip-dts32-2' of git://git.kernel.org/pub/scm/linux/kernel/git/mmind/linux-rockchip:
  ARM: dts: rockchip: Add SPDIF optical out on Radxa Rock2 Square
  ARM: dts: rockchip: Add SPDIF transceiver for RK3288
  ARM: dts: rockchip: Add SPDIF optical out on Radxa Rock
  ARM: dts: rockchip: Add SPDIF transceiver for RK3188

Signed-off-by: Olof Johansson <olof@lixom.net>
2015-10-23 10:19:04 -07:00
Olof Johansson
d8f440b6aa Allwinner DT changes for 4.4, round 2
More DT patches for 4.4, mostly with new boards coming in (CHIP, BananaPi
 M2, pcduino2), further consolidation for the q8-based designs and a bunch
 of random patches enhancing support for existing boards
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Merge tag 'sunxi-dt-for-4.4-2' of https://git.kernel.org/pub/scm/linux/kernel/git/mripard/linux into next/dt

Allwinner DT changes for 4.4, round 2

More DT patches for 4.4, mostly with new boards coming in (CHIP, BananaPi
M2, pcduino2), further consolidation for the q8-based designs and a bunch
of random patches enhancing support for existing boards

* tag 'sunxi-dt-for-4.4-2' of https://git.kernel.org/pub/scm/linux/kernel/git/mripard/linux: (27 commits)
  ARM: dts: sun6i: Add a dts file for the Sinovoip BPI-M2 board
  ARM: dts: sun6i: Add mmc2_pins_a pinmux setting to sun6i-a31.dtsi
  ARM: dts: sunxi: Fix interrupt-cells for [r]pio on A23/A31/A33/A80
  ARM: dts: sun8i: Add NMI interrupt controller node
  ARM: dts: sun6i: hummingbird: Enable AXP221 DC5LDO regulator as "vdd-cpus"
  ARM: dts: sun6i: hummingbird: Use axp22x.dtsi for AXP221 regulators
  ARM: dts: sun6i: hummingbird: Fix VDD-CPU and VDD-GPU regulator names
  ARM: dts: sun7i: Add regulator configuration for pcDuino v3 Nano
  ARM: dts: sun6i: Turn on gmac on Colombus
  ARM: dts: sun8i: Make et-q8-v1.6.dts a symlink to q8-tablet.dts
  ARM: dts: sun8i: Make ippo-q8h-v*.dts a symlink to q8-tablet.dts
  ARM: dts: sun8i: Add sun8i-a23-q8-tablet.dts file
  ARM: dts: sun5i: Add backlight node to sun5i-q8-common.dtsi
  ARM: dts: sunxi: Enable PWM controller on Q8 format tablets
  ARM: dts: sun5i: Add PWM channel 0 pinmux setting for A13/A10s
  ARM: dts: sun5i: Add PWM controller node for A13 / A10s
  ARM: sun5i: Add C.H.I.P DTS
  ARM: dts: sunxi: Add dtsi for AXP22x PMIC
  ARM: dts: sun7i: Correct USB regulators on pcDuino v3 Nano
  ARM: sun5i: dt: Add UART3 CTS and RTS pins
  ...

Signed-off-by: Olof Johansson <olof@lixom.net>
2015-10-23 10:17:27 -07:00
Olof Johansson
df3e6906d3 mvebu config for 4.4 (part 1)
Update the v7 defconfig witth usefull config for the Seagate NAS
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Merge tag 'mvebu-config-4.4-1' of git://git.infradead.org/linux-mvebu into next/defconfig

mvebu config for 4.4 (part 1)

Update the v7 defconfig witth usefull config for the Seagate NAS

* tag 'mvebu-config-4.4-1' of git://git.infradead.org/linux-mvebu:
  ARM: mvebu: enable options for Seagate NAS in mvebu_v7_defconfig

Signed-off-by: Olof Johansson <olof@lixom.net>
2015-10-23 10:16:12 -07:00
Olof Johansson
7b6e28c38f This is the pxa changes for v4.4 cycle.
This cycle is bigger than usual :
  - magician was greatly enhanced (new IPs discovered, ...)
  - almost all legacy board files have been updated to the
    new PWM API (mostly for backlight control)
  - some minor fixes in raumfeld, z2 and mioa701
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Merge tag 'pxa-for-4.4' of https://github.com/rjarzmik/linux into next/cleanup

This is the pxa changes for v4.4 cycle.

This cycle is bigger than usual :
 - magician was greatly enhanced (new IPs discovered, ...)
 - almost all legacy board files have been updated to the
   new PWM API (mostly for backlight control)
 - some minor fixes in raumfeld, z2 and mioa701

* tag 'pxa-for-4.4' of https://github.com/rjarzmik/linux: (44 commits)
  ARM: pxa: remove incorrect __init annotation on pxa27x_set_pwrmode
  ARM: pxa: raumfeld: make some variables static
  ARM: pxa: magician: Remove pdata for pasic3-leds
  ARM: pxa: magician: Add support for PXA27x UDC
  ARM: pxa: magician: Add support for MAX1587A Vcore regulator
  ARM: pxa: magician: Change comments to be more informative
  ARM: pxa: magician: Move platform_add_devices() to the end of magician_init()
  ARM: pxa: magician: Add missing regulator for PWM backlight
  ARM: pxa: magician: Add debug message for backlight brightness function
  ARM: pxa: magician: Remove definition of the STUART port
  ARM: pxa: magician: Fix wrongly enabled USB host ports
  ARM: pxa: magician: Fix support for Intel Strata NOR Flash
  ARM: pxa: magician: Fix redundant GPIO request for pxaficp_ir
  ARM: pxa: magician: Fix platform data for both PXA27x I2C controllers
  ARM: pxa: magician: Fix and add charging detection functions
  ARM: pxa: magician: Optimize Samsung LCD refresh to 50Hz
  ARM: pxa: magician: Rename charger cable detection EGPIOs
  ARM: pxa: magician: Optimize powerup delays for Samsung LCD
  ARM: pxa: magician: Rename abstract LCD GPIOs
  ARM: pxa: magician: Add new discovered EGPIO pins
  ...

Signed-off-by: Olof Johansson <olof@lixom.net>
2015-10-23 10:15:03 -07:00
Vincent Donnefort
9d2ea95a59 ARM: mvebu: add broken-idle option
The broken-idle option can be activated from the coherency-fabric DT
node. This property allows to disable the idle capability, when the
hardware doesn't support it, like the Seagate Personal Cloud boards.

Signed-off-by: Vincent Donnefort <vdonnefort@gmail.com>
Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
2015-10-23 17:34:37 +02:00
Andy Shevchenko
4904dbda41 ARM: orion5x: use mac_pton() helper
Instead of custom approach let's use generic helper function.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: Detlef Vollmann <dv@vollmann.ch>
Cc: Gregory CLEMENT <gregory.clement@free-electrons.com>
Tested-by: Tested-by: Detlef Vollmann <dv@vollmann.ch> #on DNS-323
Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
2015-10-23 17:18:22 +02:00
Stefano Stabellini
cb9644bf3b xen/arm: don't try to re-register vcpu_info on cpu_hotplug.
Call disable_percpu_irq on CPU_DYING and enable_percpu_irq when the cpu
is coming up.

Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Reviewed-by: Julien Grall <julien.grall@citrix.com>
2015-10-23 14:20:48 +01:00
Stefano Stabellini
a314e3eb84 xen/arm: Enable cpu_hotplug.c
Build cpu_hotplug for ARM and ARM64 guests.

Rename arch_(un)register_cpu to xen_(un)register_cpu and provide an
empty implementation on ARM and ARM64. On x86 just call
arch_(un)register_cpu as we are already doing.

Initialize cpu_hotplug on ARM.

Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Reviewed-by: Julien Grall <julien.grall@citrix.com>
Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
2015-10-23 14:20:47 +01:00
Juergen Gross
d5f985c834 xen/arm: correct comment in enlighten.c
Correct a comment in arch/arm/xen/enlighten.c referencing a wrong
source file.

Signed-off-by: Juergen Gross <jgross@suse.com>
Acked-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Signed-off-by: David Vrabel <david.vrabel@citrix.com>
2015-10-23 14:20:45 +01:00
Julien Grall
9435cce879 xen/swiotlb: Add support for 64KB page granularity
Swiotlb is used on ARM64 to support DMA on platform where devices are
not protected by an SMMU. Furthermore it's only enabled for DOM0.

While Xen is always using 4KB page granularity in the stage-2 page table,
Linux ARM64 may either use 4KB or 64KB. This means that a Linux page
can be spanned accross multiple Xen page.

The Swiotlb code has to validate that the buffer used for DMA is
physically contiguous in the memory. As a Linux page can't be shared
between local memory and foreign page by design (the balloon code always
removing entirely a Linux page), the changes in the code are very
minimal because we only need to check the first Xen PFN.

Note that it may be possible to optimize the function
check_page_physically_contiguous to avoid looping over every Xen PFN
for local memory. Although I will let this optimization for a follow-up.

Signed-off-by: Julien Grall <julien.grall@citrix.com>
Reviewed-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Signed-off-by: David Vrabel <david.vrabel@citrix.com>
2015-10-23 14:20:43 +01:00
Julien Grall
291be10fd7 xen/swiotlb: Pass addresses rather than frame numbers to xen_arch_need_swiotlb
With 64KB page granularity support, the frame number will be different.

It will be easier to modify the behavior in a single place rather than
in each caller.

Signed-off-by: Julien Grall <julien.grall@citrix.com>
Reviewed-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Signed-off-by: David Vrabel <david.vrabel@citrix.com>
2015-10-23 14:20:43 +01:00
Julien Grall
250c9af3d8 arm/xen: Add support for 64KB page granularity
The hypercall interface is always using 4KB page granularity. This is
requiring to use xen page definition macro when we deal with hypercall.

Note that pfn_to_gfn is working with a Xen pfn (i.e 4KB). We may want to
rename pfn_gfn to make this explicit.

We also allocate a 64KB page for the shared page even though only the
first 4KB is used. I don't think this is really important for now as it
helps to have the pointer 4KB aligned (XENMEM_add_to_physmap is taking a
Xen PFN).

Signed-off-by: Julien Grall <julien.grall@citrix.com>
Reviewed-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Signed-off-by: David Vrabel <david.vrabel@citrix.com>
2015-10-23 14:20:42 +01:00
Julien Grall
5ed5451d99 xen/grant-table: Make it running on 64KB granularity
The Xen interface is using 4KB page granularity. This means that each
grant is 4KB.

The current implementation allocates a Linux page per grant. On Linux
using 64KB page granularity, only the first 4KB of the page will be
used.

We could decrease the memory wasted by sharing the page with multiple
grant. It will require some care with the {Set,Clear}ForeignPage macro.

Note that no changes has been made in the x86 code because both Linux
and Xen will only use 4KB page granularity.

Signed-off-by: Julien Grall <julien.grall@citrix.com>
Reviewed-by: David Vrabel <david.vrabel@citrix.com>
Reviewed-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Signed-off-by: David Vrabel <david.vrabel@citrix.com>
2015-10-23 14:20:39 +01:00
Julien Grall
5031612b5e arm/xen: Drop pte_mfn and mfn_pte
They are not used in common code expect in one place in balloon.c which is
only compiled when Linux is using PV MMU. It's not the case on ARM.

Rather than worrying how to handle the 64KB case, drop them.

Signed-off-by: Julien Grall <julien.grall@citrix.com>
Reviewed-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Signed-off-by: David Vrabel <david.vrabel@citrix.com>
2015-10-23 14:20:32 +01:00
Linus Torvalds
d0ddf980d6 ARM: SoC fixes for 4.3-rc
Most of the changes this time are for incorrect device nodes in various
 ways, on on imx, berlin, exynos, ux500, uniphier, omap and meson.
 
 Chen-Yu Tsai now co-maintains mach-sunxi (Allwinner).
 
 Other bug fixes include
  * a partial revert of a broken tegra gpio patch
  * irq affinity for arm ccn
  * suspend on one Armada 385 machine
  * enable ZONE_DMA to avoid an OMAP crash for over 2GB RAM
  * turning on a regulator on beagleboard-x15 for HDMI
  * making the omap gpmc debug code visible
  * setup of orion network switch
  * a rare build regression for pxa
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Merge tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull ARM SoC fixes from Arnd Bergmann:
 "Most of the changes this time are for incorrect device nodes in
  various ways, on on imx, berlin, exynos, ux500, uniphier, omap and
  meson.

  Chen-Yu Tsai now co-maintains mach-sunxi (Allwinner).

  Other bug fixes include
   - a partial revert of a broken tegra gpio patch
   - irq affinity for arm ccn
   - suspend on one Armada 385 machine
   - enable ZONE_DMA to avoid an OMAP crash for over 2GB RAM
   - turning on a regulator on beagleboard-x15 for HDMI
   - making the omap gpmc debug code visible
   - setup of orion network switch
   - a rare build regression for pxa"

* tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (22 commits)
  ARM: OMAP2+: Fix imprecise external abort caused by bogus SRAM init
  thermal: exynos: Fix register read in TMU
  ARM: OMAP2+: Fix oops with LPAE and more than 2GB of memory
  ARM: tegra: Comment out gpio-ranges properties
  ARM: dts: uniphier: fix IRQ number for devices on PH1-LD6b ref board
  drivers/perf: arm_pmu: avoid CPU device_node reference leak
  bus: arm-ccn: Fix irq affinity setting on CPU migration
  bus: arm-ccn: Handle correctly no-more-cpus case
  ARM: mvebu: correct a385-db-ap compatible string
  ARM: meson6: DTS: Fix wrong reg mapping and IRQ numbers
  MAINTAINERS: Update Allwinner entry and add new maintainer
  ARM: ux500: modify initial levelshifter status
  ARM: pxa: fix pxa3xx DFI lockup hack
  Documentation: ARM: List new omap MMC requirements
  memory: omap-gpmc: dump "before" state before first modification
  memory: omap-gpmc: Fix unselectable debug option for GPMC
  ARM: dts: am57xx-beagle-x15: set VDD_SD to always-on
  ARM: dts: Fix audio card detection on Peach boards
  ARM: EXYNOS: Fix double of_node_put() when parsing child power domains
  ARM: orion: Fix DSA platform device after mvmdio conversion
  ...
2015-10-23 18:38:00 +09:00
Linus Torvalds
2c44f4f035 Bug fixes for ARM, mostly 4.3 regressions related to virtual
interrupt controller changes.
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm

Pull KVM bugfixes from Paolo Bonzini:
 "Bug fixes for ARM, mostly 4.3 regressions related to virtual interrupt
  controller changes"

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
  arm/arm64: KVM: Fix disabled distributor operation
  arm/arm64: KVM: Clear map->active on pend/active clear
  arm/arm64: KVM: Fix arch timer behavior for disabled interrupts
  KVM: arm: use GIC support unconditionally
  KVM: arm/arm64: Fix memory leak if timer initialization fails
  KVM: arm/arm64: Do not inject spurious interrupts
2015-10-23 18:32:29 +09:00
Eric Anholt
121432c7a0 ARM: bcm2835: Add the DDC I2C controller to the device tree.
We need to use it for getting video modes over HDMI.

Signed-off-by: Eric Anholt <eric@anholt.net>
Acked-by: Stephen Warren <swarren@wwwdotorg.org>
2015-10-23 10:04:02 +01:00
Eric Anholt
94cb7f76ca ARM: bcm2835: Switch to using the new clock driver support.
This will give us the ability to set the pixel and HDMI state machine
clocks for the VC4 KMS driver, change the CPU frequency, and
potentially gate clocks in the future (once we also write a power
domain driver).  It also gives the uart an explicit clock reference,
so that we don't need to change the physical addresses of the old
fixed clk_bcm2835.c clocks for Raspberry Pi 2 port.

Two clocks get their frequencies updated as a result of this.  One is
uart's apb_pclk, which was previously accidentally grabbing the fixed
uart0_pclk due to the apb_pclk not having clk_register_clkdev()
called.  The uart doesn't seem to do anything with apb_pclk other than
make sure it's on, so that appears safe (also, as far as I can see,
the apb clock is actually the same as the VPU clock).  The other is
EMMC, which according to the docs was supposed to be in the 50-100Mhz
range, but it turns out the firmware needed to change to running it at
the 250Mhz core clock speed to avoid a bug in clock domain crossing.

Additionally, anything using BCM2835_CLOCK_VPU will now have a correct
clock rate if the user configures the boot-time core clock speed using
config.txt.

Signed-off-by: Eric Anholt <eric@anholt.net>
Acked-by: Stephen Warren <swarren@wwwdotorg.org>
2015-10-23 10:03:55 +01:00
Karsten Merker
a5ea06d0bc ARM: dts: sun6i: Add dts file for MSI Primo81 tablet
The MSI Primo81 is an A31s based tablet, with 1G RAM, 16G NAND,
768x1024 IPS LCD display, mono speaker, 0.3 MP front camera, 2.0 MP
rear camera, 3500 mAh battery, gt911 touchscreen, mma8452 accelerometer
and rtl8188etv usb wifi. Has "power", "volume+" and "volume-" buttons
(both volume buttons are also connected to the UBOOT_SEL pin). The
external connectors are represented by MicroSD slot, MiniHDMI, MicroUSB
OTG and 3.5mm headphone jack.

USB OTG is enabled in host only mode. AXP221 USB power supply and
GPIO support are required for full USB OTG support.

Signed-off-by: Siarhei Siamashka <siarhei.siamashka@gmail.com>
Signed-off-by: Karsten Merker <merker@debian.org>
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
2015-10-23 08:05:17 +02:00
Chen-Yu Tsai
c0949308dd ARM: dts: sun6i: Add simplefb node labels to reference at board level
Some boards, such as tablets, have regulators providing power to parts
of the display pipeline, like signal converters and LCD panels.

Add labels to the simplefb device nodes so that we can reference them
in the board dts files to add regulator supply properties.

Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
2015-10-23 08:04:49 +02:00
Greg Kroah-Hartman
a4d8e93c31 usb: patches for v4.4 merge window
This pull request is large with a total of 136 non-merge
 commits. Because of its size, we will only describe the big things in
 broad terms.
 
 Many will be happy to know that dwc3 is now almost twice as fast after
 some profiling and speed improvements. Also in dwc3, John Youn from
 Synopsys added support for their new DWC USB3.1 IP Core and the HAPS
 platform which can be used to validate it.
 
 A series of patches from Robert Baldyga cleaned up uses of
 ep->driver_data as a flag for "claimed endpoint" in favor of the new
 ep->claimed flag.
 
 Sudip Mukherjee fixed a ton of really old problems on the amd5536udc
 driver. That should make a few people happy.
 
 Heikki Krogerus worked on converting dwc3 to the unified device property
 interface.
 
 Together with these, there's a ton of non-critical fixes, typos and
 stuff like that.
 
 Signed-off-by: Felipe Balbi <balbi@ti.com>
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Merge tag 'usb-for-v4.4' of git://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb into usb-next

Felipe writes:

usb: patches for v4.4 merge window

This pull request is large with a total of 136 non-merge
commits. Because of its size, we will only describe the big things in
broad terms.

Many will be happy to know that dwc3 is now almost twice as fast after
some profiling and speed improvements. Also in dwc3, John Youn from
Synopsys added support for their new DWC USB3.1 IP Core and the HAPS
platform which can be used to validate it.

A series of patches from Robert Baldyga cleaned up uses of
ep->driver_data as a flag for "claimed endpoint" in favor of the new
ep->claimed flag.

Sudip Mukherjee fixed a ton of really old problems on the amd5536udc
driver. That should make a few people happy.

Heikki Krogerus worked on converting dwc3 to the unified device property
interface.

Together with these, there's a ton of non-critical fixes, typos and
stuff like that.

Signed-off-by: Felipe Balbi <balbi@ti.com>
2015-10-22 17:19:33 -07:00
Christoffer Dall
b5905dc12e arm/arm64: KVM: Improve kvm_exit tracepoint
The ARM architecture only saves the exit class to the HSR (ESR_EL2 for
arm64) on synchronous exceptions, not on asynchronous exceptions like an
IRQ.  However, we only report the exception class on kvm_exit, which is
confusing because an IRQ looks like it exited at some PC with the same
reason as the previous exit.  Add a lookup table for the exception index
and prepend the kvm_exit tracepoint text with the exception type to
clarify this situation.

Also resolve the exception class (EC) to a human-friendly text version
so the trace output becomes immediately usable for debugging this code.

Cc: Wei Huang <wei@redhat.com>
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
2015-10-22 23:01:47 +02:00
Eric Auger
3b92830ad4 KVM: arm/arm64: implement kvm_arm_[halt,resume]_guest
We introduce kvm_arm_halt_guest and resume functions. They
will be used for IRQ forward state change.

Halt is synchronous and prevents the guest from being re-entered.
We use the same mechanism put in place for PSCI former pause,
now renamed power_off. A new flag is introduced in arch vcpu state,
pause, only meant to be used by those functions.

Signed-off-by: Eric Auger <eric.auger@linaro.org>
Reviewed-by: Christoffer Dall <christoffer.dall@linaro.org>
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
2015-10-22 23:01:46 +02:00
Eric Auger
101d3da09c KVM: arm/arm64: check power_off in critical section before VCPU run
In case a vcpu off PSCI call is called just after we executed the
vcpu_sleep check, we can enter the guest although power_off
is set. Let's check the power_off state in the critical section,
just before entering the guest.

Signed-off-by: Eric Auger <eric.auger@linaro.org>
Reported-by: Christoffer Dall <christoffer.dall@linaro.org>
Reviewed-by: Christoffer Dall <christoffer.dall@linaro.org>
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
2015-10-22 23:01:46 +02:00
Eric Auger
4f5f1dc036 KVM: arm/arm64: check power_off in kvm_arch_vcpu_runnable
kvm_arch_vcpu_runnable now also checks whether the power_off
flag is set.

Signed-off-by: Eric Auger <eric.auger@linaro.org>
Reviewed-by: Christoffer Dall <christoffer.dall@linaro.org>
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
2015-10-22 23:01:46 +02:00
Eric Auger
3781528e30 KVM: arm/arm64: rename pause into power_off
The kvm_vcpu_arch pause field is renamed into power_off to prepare
for the introduction of a new pause field. Also vcpu_pause is renamed
into vcpu_sleep since we will sleep until both power_off and pause are
false.

Signed-off-by: Eric Auger <eric.auger@linaro.org>
Reviewed-by: Christoffer Dall <christoffer.dall@linaro.org>
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
2015-10-22 23:01:45 +02:00
Wei Huang
75755c6d02 arm/arm64: KVM : Enable vhost device selection under KVM config menu
vhost drivers provide guest VMs with better I/O performance and lower
CPU utilization. This patch allows users to select vhost devices under
KVM configuration menu on ARM. This makes vhost support on arm/arm64
on a par with other architectures (e.g. x86, ppc).

Signed-off-by: Wei Huang <wei@redhat.com>
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
2015-10-22 23:01:45 +02:00
Christoffer Dall
4b4b4512da arm/arm64: KVM: Rework the arch timer to use level-triggered semantics
The arch timer currently uses edge-triggered semantics in the sense that
the line is never sampled by the vgic and lowering the line from the
timer to the vgic doesn't have any effect on the pending state of
virtual interrupts in the vgic.  This means that we do not support a
guest with the otherwise valid behavior of (1) disable interrupts (2)
enable the timer (3) disable the timer (4) enable interrupts.  Such a
guest would validly not expect to see any interrupts on real hardware,
but will see interrupts on KVM.

This patch fixes this shortcoming through the following series of
changes.

First, we change the flow of the timer/vgic sync/flush operations.  Now
the timer is always flushed/synced before the vgic, because the vgic
samples the state of the timer output.  This has the implication that we
move the timer operations in to non-preempible sections, but that is
fine after the previous commit getting rid of hrtimer schedules on every
entry/exit.

Second, we change the internal behavior of the timer, letting the timer
keep track of its previous output state, and only lower/raise the line
to the vgic when the state changes.  Note that in theory this could have
been accomplished more simply by signalling the vgic every time the
state *potentially* changed, but we don't want to be hitting the vgic
more often than necessary.

Third, we get rid of the use of the map->active field in the vgic and
instead simply set the interrupt as active on the physical distributor
whenever the input to the GIC is asserted and conversely clear the
physical active state when the input to the GIC is deasserted.

Fourth, and finally, we now initialize the timer PPIs (and all the other
unused PPIs for now), to be level-triggered, and modify the sync code to
sample the line state on HW sync and re-inject a new interrupt if it is
still pending at that time.

Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
2015-10-22 23:01:44 +02:00
Christoffer Dall
d35268da66 arm/arm64: KVM: arch_timer: Only schedule soft timer on vcpu_block
We currently schedule a soft timer every time we exit the guest if the
timer did not expire while running the guest.  This is really not
necessary, because the only work we do in the timer work function is to
kick the vcpu.

Kicking the vcpu does two things:
(1) If the vpcu thread is on a waitqueue, make it runnable and remove it
from the waitqueue.
(2) If the vcpu is running on a different physical CPU from the one
doing the kick, it sends a reschedule IPI.

The second case cannot happen, because the soft timer is only ever
scheduled when the vcpu is not running.  The first case is only relevant
when the vcpu thread is on a waitqueue, which is only the case when the
vcpu thread has called kvm_vcpu_block().

Therefore, we only need to make sure a timer is scheduled for
kvm_vcpu_block(), which we do by encapsulating all calls to
kvm_vcpu_block() with kvm_timer_{un}schedule calls.

Additionally, we only schedule a soft timer if the timer is enabled and
unmasked, since it is useless otherwise.

Note that theoretically userspace can use the SET_ONE_REG interface to
change registers that should cause the timer to fire, even if the vcpu
is blocked without a scheduled timer, but this case was not supported
before this patch and we leave it for future work for now.

Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
2015-10-22 23:01:42 +02:00
Christoffer Dall
3217f7c25b KVM: Add kvm_arch_vcpu_{un}blocking callbacks
Some times it is useful for architecture implementations of KVM to know
when the VCPU thread is about to block or when it comes back from
blocking (arm/arm64 needs to know this to properly implement timers, for
example).

Therefore provide a generic architecture callback function in line with
what we do elsewhere for KVM generic-arch interactions.

Reviewed-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
2015-10-22 23:01:41 +02:00
Aleksei Mamlin
6536d910ef ARM: dts: sun4i: Enable audio codec on Marsboard A10.
Enable on-chip audio codec on the Marsboard A10.

Signed-off-by: Aleksei Mamlin <mamlinav@gmail.com>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
2015-10-22 20:58:12 +02:00
Olof Johansson
2995f0a1b6 mvebu dt for 4.4 (part 2)
- Add support for severals Armada-370-based Seagate NAS
 - Fix Ready NAS device tree
 - Modify SDHCI binding for A388-GP allowing using it on old and new
   version of the board
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Merge tag 'mvebu-dt-4.4-2' of git://git.infradead.org/linux-mvebu into next/dt

mvebu dt for 4.4 (part 2)

- Add support for severals Armada-370-based Seagate NAS
- Fix Ready NAS device tree
- Modify SDHCI binding for A388-GP allowing using it on old and new
  version of the board

* tag 'mvebu-dt-4.4-2' of git://git.infradead.org/linux-mvebu:
  ARM: mvebu: set SW polling as SDHCI card detection on A388-GP
  arm: mvebu: reorder nodes under internal-regs by address in RN2120 .dts file
  arm: mvebu: disable unused Armada RTC on ReadyNAS 102, 104 and 2120
  ARM: mvebu: add DT support for Seagate Personal Cloud
  ARM: mvebu: add DT support for Seagate NAS 2 and 4-Bay

Signed-off-by: Olof Johansson <olof@lixom.net>
2015-10-22 10:43:03 -07:00
Olof Johansson
7b192fb7b4 mvebu cleanup for 4.4 (part 2)
Remove code related to Armada 375 Z1 stepping no more supported in mainline
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Merge tag 'mvebu-cleanup-4.4-2' of git://git.infradead.org/linux-mvebu into next/cleanup

mvebu cleanup for 4.4 (part 2)

Remove code related to Armada 375 Z1 stepping no more supported in mainline

* tag 'mvebu-cleanup-4.4-2' of git://git.infradead.org/linux-mvebu:
  ARM: mvebu: remove the workaround imprecise abort fault handler

Signed-off-by: Olof Johansson <olof@lixom.net>
2015-10-22 10:35:32 -07:00
Olof Johansson
b52d232027 SoCFPGA defconfig update for v4.4
- Add the FPGA manager config option
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Merge tag 'socfpga_defconfig_for_v4.4' of git://git.kernel.org/pub/scm/linux/kernel/git/dinguyen/linux into next/defconfig

SoCFPGA defconfig update for v4.4
- Add the FPGA manager config option

* tag 'socfpga_defconfig_for_v4.4' of git://git.kernel.org/pub/scm/linux/kernel/git/dinguyen/linux:
  ARM: socfpga_defconfig: enable fpga manager

Signed-off-by: Olof Johansson <olof@lixom.net>
2015-10-22 10:10:28 -07:00
Olof Johansson
64aa1fe183 SoCFPGA dts cleanup for v4.4
- Re-order DTS nodes into correct alphabetical order
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Merge tag 'socfpga_for_v4.4_cleanup' of git://git.kernel.org/pub/scm/linux/kernel/git/dinguyen/linux into next/dt

SoCFPGA dts cleanup for v4.4
- Re-order DTS nodes into correct alphabetical order

* tag 'socfpga_for_v4.4_cleanup' of git://git.kernel.org/pub/scm/linux/kernel/git/dinguyen/linux:
  ARM: socfpga: dts: sort nodes alphabetically

Signed-off-by: Olof Johansson <olof@lixom.net>
2015-10-22 10:08:46 -07:00
Olof Johansson
9174455472 SoCFPGA DTS update for v4.4, part 2
- Add the FPGA manager node
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Merge tag 'socfpga_dts_for_v4.4_part_2' of git://git.kernel.org/pub/scm/linux/kernel/git/dinguyen/linux into next/dt

SoCFPGA DTS update for v4.4, part 2
- Add the FPGA manager node

* tag 'socfpga_dts_for_v4.4_part_2' of git://git.kernel.org/pub/scm/linux/kernel/git/dinguyen/linux:
  ARM: socfpga: dts: add fpga manager

Signed-off-by: Olof Johansson <olof@lixom.net>
2015-10-22 10:07:04 -07:00
Stephen Boyd
b96fc2f3c1 ARM: Remove __ref on hotplug cpu die path
Now that __cpuinit has been removed, the __ref markings on these
functions are useless. Remove them. This also reduces the size of
the multi_v7_defconfig image:

$ size before after
   text    data     bss     dec     hex filename
   12683578        1470996  348904 14503478         dd4e36 before
   12683274        1470996  348904 14503174         dd4d06 after

presumably because now we don't have to jump to code in the
.ref.text section and/or the noinline marking is removed.

Cc: Shiraz Hashim <shiraz.linux.kernel@gmail.com>
Cc: Stephen Warren <swarren@wwwdotorg.org>
Cc: Alexandre Courbot <gnurou@gmail.com>
Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Cc: <linux-omap@vger.kernel.org>
Cc: <linux-arm-msm@vger.kernel.org>
Cc: <spear-devel@list.st.com>
Cc: <linux-tegra@vger.kernel.org>
Acked-by: Tony Lindgren <tony@atomide.com>
Acked-by: Barry Song <baohua@kernel.org>
Acked-by: Andy Gross <agross@codeaurora.org>
Acked-by: Viresh Kumar <vireshk@kernel.org>
Acked-by: Thierry Reding <thierry.reding@gmail.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Sudeep Holla <sudeep.holla@arm.com>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Olof Johansson <olof@lixom.net>
2015-10-22 09:55:03 -07:00
Sudeep Holla
4db7062c9a ARM: dts: fix gpio-keys wakeup-source property
The keyboard driver for GPIO buttons(gpio-keys) checks for one of the
two boolean properties to enable gpio buttons as wakeup source:
1. "wakeup-source" or
2. the legacy "gpio-key,wakeup"

However juno, ste-snowball and emev2-kzm9d dts file have a undetected
"wakeup" property to indictate the wakeup source.

This patch fixes it by making use of "wakeup-source" property.

Cc: Magnus Damm <magnus.damm@gmail.com>
Acked-by: Simon Horman <horms@verge.net.au>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
Signed-off-by: Olof Johansson <olof@lixom.net>
2015-10-22 09:53:57 -07:00