Eric Lee / smarc-fsl-linux-kernel

14 Apr, 2017

2 commits

  • f7a388d6c   power: reset: Add a driver for the Gemini poweroff ... Browse Code »

    The Gemini (SL3516) SoC has a special power controller block
    that only deal with shutting down the system.

    If you do not register a driver and activate the block, the
    power button on the systems utilizing this SoC will do an
    uncontrolled power cut, which is why it is important to have
    a special poweroff driver.

    The most basic functionality is to just shut down the system
    by writing a special bit in the control register after the
    system has reached pm_poweroff.

    It also handles the poweroff from a button or other sources:

    When the poweroff button is pressed, or a signal is sent to
    poweroff from an infrared remote control, or when the RTC
    fires a special alarm (!) the system emits an interrupt.
    At this point, Linux must acknowledge the interrupt and
    proceed to do an orderly shutdown of the system.

    After adding this driver, pressing the poweroff button gives
    this dmesg:

    root@gemini:/
    root@gemini:/ gemini-poweroff 4b000000.power-controller:
    poweroff button pressed

    calling shutdown scripts..
    setting /dev/rtc0 from system time
    unmounting file systems...
    umount: tmpfs busy - remounted read-only
    umount: can't unmount /: Invalid argument
    The system is going down NOW!
    Sent SIGTERM to all processes
    Sent SIGKILL to all processes
    Requesting system poweroff
    uhci_hcd 0000:00:09.1: HCRESET not completed yet!
    uhci_hcd 0000:00:09.0: HCRESET not completed yet!
    reboot: Power down
    gemini-poweroff 4b000000.power-controller: Gemini power off

    Cc: Janos Laube
    Cc: Paulius Zaleckas
    Cc: Hans Ulli Kroll
    Cc: Florian Fainelli
    Cc: linux-pm@vger.kernel.org
    Cc: Sebastian Reichel
    Signed-off-by: Linus Walleij
    Signed-off-by: Sebastian Reichel

    Linus Walleij
     
  • f2c199db4   power: reset: syscon-poweroff: add a mask property ... Browse Code »

    Make the syscon-poweroff driver accept value and mask instead of
    just value.

    Prior to this patch, the property name for the value was 'mask'. If
    only the mask property is defined on a node, maintain compatibility
    by using it as the value.

    Signed-off-by: Guy Shapiro
    Acked-by: Rob Herring
    Signed-off-by: Sebastian Reichel

    Guy Shapiro
     

19 Jan, 2017

2 commits

17 Jan, 2017

1 commit

26 Dec, 2016

1 commit

  • 8b0e19531   ktime: Cleanup ktime_set() usage ... Browse Code »

    ktime_set(S,N) was required for the timespec storage type and is still
    useful for situations where a Seconds and Nanoseconds part of a time value
    needs to be converted. For anything where the Seconds argument is 0, this
    is pointless and can be replaced with a simple assignment.

    Signed-off-by: Thomas Gleixner
    Cc: Peter Zijlstra

    Thomas Gleixner
     

19 Oct, 2016

4 commits

  • 93f7c27b4   power: reset: zx-reboot: Fix module autoload ... Browse Code »

    If the driver is built as a module, autoload won't work because the module
    alias information is not filled. So user-space can't match the registered
    device with the corresponding module.

    Export the module alias information using the MODULE_DEVICE_TABLE() macro.

    Before this patch:

    $ modinfo drivers/power/reset/zx-reboot.ko | grep alias
    $

    After this patch:

    $ modinfo drivers/power/reset/zx-reboot.ko | grep alias
    alias: of:N*T*Czte,sysctrlC*
    alias: of:N*T*Czte,sysctrl

    Signed-off-by: Javier Martinez Canillas
    Signed-off-by: Sebastian Reichel

    Javier Martinez Canillas
     
  • 0a27aa9c3   power: reset: syscon-reboot-mode: Fix module autoload ... Browse Code »

    If the driver is built as a module, autoload won't work because the module
    alias information is not filled. So user-space can't match the registered
    device with the corresponding module.

    Export the module alias information using the MODULE_DEVICE_TABLE() macro.

    Before this patch:

    $ modinfo drivers/power/reset/syscon-reboot-mode.ko | grep alias
    $

    After this patch:

    $ modinfo drivers/power/reset/syscon-reboot-mode.ko | grep alias
    alias: of:N*T*Csyscon-reboot-modeC*
    alias: of:N*T*Csyscon-reboot-mode

    Signed-off-by: Javier Martinez Canillas
    Signed-off-by: Sebastian Reichel

    Javier Martinez Canillas
     
  • c9ba9b776   power: reset: at91-poweroff: Fix module autoload ... Browse Code »

    If the driver is built as a module, autoload won't work because the module
    alias information is not filled. So user-space can't match the registered
    device with the corresponding module.

    Export the module alias information using the MODULE_DEVICE_TABLE() macro.

    Before this patch:

    $ modinfo drivers/power/reset/at91-poweroff.ko | grep alias
    $

    After this patch:

    $ modinfo drivers/power/reset/at91-poweroff.ko | grep alias
    alias: of:N*T*Catmel,at91sam9x5-shdwcC*
    alias: of:N*T*Catmel,at91sam9x5-shdwc
    alias: of:N*T*Catmel,at91sam9rl-shdwcC*
    alias: of:N*T*Catmel,at91sam9rl-shdwc
    alias: of:N*T*Catmel,at91sam9260-shdwcC*
    alias: of:N*T*Catmel,at91sam9260-shdwc

    Signed-off-by: Javier Martinez Canillas
    Signed-off-by: Sebastian Reichel

    Javier Martinez Canillas
     
  • 991de4403   power: reset: at91-reset: Fix module autoload ... Browse Code »

    If the driver is built as a module, autoload won't work because the module
    alias information is not filled. So user-space can't match the registered
    device with the corresponding module.

    Export the module alias information using the MODULE_DEVICE_TABLE() macro.

    Before this patch:

    $ modinfo drivers/power/reset/at91-reset.ko | grep alias
    $

    After this patch:

    $ modinfo drivers/power/reset/at91-reset.ko | grep alias
    alias: of:N*T*Catmel,sama5d3-rstcC*
    alias: of:N*T*Catmel,sama5d3-rstc
    alias: of:N*T*Catmel,at91sam9g45-rstcC*
    alias: of:N*T*Catmel,at91sam9g45-rstc
    alias: of:N*T*Catmel,at91sam9260-rstcC*
    alias: of:N*T*Catmel,at91sam9260-rstc
    alias: platform:at91-sam9g45-reset
    alias: platform:at91-sam9260-reset

    Signed-off-by: Javier Martinez Canillas
    Signed-off-by: Sebastian Reichel

    Javier Martinez Canillas
     

18 Oct, 2016

1 commit

  • 29676833d   power: reset: Add Intel PIIX4 poweroff driver ... Browse Code »

    Add a driver which allows powering off the system via an Intel PIIX4
    southbridge, by entering the PIIX4 SOff state. This is useful on the
    MIPS Malta development board, where it will power down the FPGA based
    board until its ON/NMI button is pressed, or the QEMU implementation of
    the MIPS Malta board where it will cause QEMU to exit.

    Signed-off-by: Paul Burton
    Cc: Sebastian Reichel
    Cc: Dmitry Eremin-Solenikov
    Cc: David Woodhouse
    Cc: linux-pm@vger.kernel.org
    Signed-off-by: Sebastian Reichel

    Paul Burton
     

20 Sep, 2016

4 commits

16 Aug, 2016

3 commits

13 Aug, 2016

2 commits

  • bae170efd   power: reset: hisi-reboot: Unmap region obtained by of_iomap ... Browse Code »

    Free memory mapping, if probe is not successful.

    Fixes: 4a9b37371822 ("power: reset: move hisilicon reboot code")
    Signed-off-by: Arvind Yadav
    Signed-off-by: Sebastian Reichel

    Arvind Yadav
     
  • 7a4947cf6   power: reset: reboot-mode: fix build error of missing ioremap/iounmap on UM ... Browse Code »

    commit 4fcd504edbf7 ("power: reset: add reboot mode driver") uses api from
    syscon, and syscon uses ioremap/iounmap which depends on HAS_IOMEM, so
    let's depend on MFD_SYSCON instead of selecting it directly to avoid the
    um-allyesconfig like build error on archs that without iomem:

    drivers/mfd/syscon.c: In function 'of_syscon_register':
    drivers/mfd/syscon.c:67:9: error: implicit declaration of function 'ioremap' [-Werror=implicit-function-declaration]
    base = ioremap(res.start, resource_size(&res));
    ^
    drivers/mfd/syscon.c:67:7: warning: assignment makes pointer from integer without a cast [-Wint-conversion]
    base = ioremap(res.start, resource_size(&res));
    ^
    drivers/mfd/syscon.c:109:2: error: implicit declaration of function 'iounmap' [-Werror=implicit-function-declaration]
    iounmap(base);
    ^

    Reported-by: Kbuild test robot
    Fixes: 4fcd504edbf7("power: reset: add reboot mode driver")
    Signed-off-by: Andy Yan
    Reviewed-by: Krzysztof Kozlowski
    Signed-off-by: Sebastian Reichel

    Andy Yan
     

02 Aug, 2016

2 commits

  • 43a0a98aa   Merge tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc ... Browse Code »

    Pull ARM SoC driver updates from Olof Johansson:
    "Driver updates for ARM SoCs.

    A slew of changes this release cycle. The reset driver tree, that we
    merge through arm-soc for historical reasons, is also sizable this
    time around.

    Among the changes:

    - clps711x: Treewide changes to compatible strings, merged here for simplicity.
    - Qualcomm: SCM firmware driver cleanups, move to platform driver
    - ux500: Major cleanups, removal of old mach-specific infrastructure.
    - Atmel external bus memory driver
    - Move of brcmstb platform to the rest of bcm
    - PMC driver updates for tegra, various fixes and improvements
    - Samsung platform driver updates to support 64-bit Exynos platforms
    - Reset controller cleanups moving to devm_reset_controller_register() APIs
    - Reset controller driver for Amlogic Meson
    - Reset controller driver for Hisilicon hi6220
    - ARM SCPI power domain support"

    * tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (100 commits)
    ARM: ux500: consolidate base platform files
    ARM: ux500: move soc_id driver to drivers/soc
    ARM: ux500: call ux500_setup_id later
    ARM: ux500: consolidate soc_device code in id.c
    ARM: ux500: remove cpu_is_u* helpers
    ARM: ux500: use CLK_OF_DECLARE()
    ARM: ux500: move l2x0 init to .init_irq
    mfd: db8500 stop passing around platform data
    ASoC: ab8500-codec: remove platform data based probe
    ARM: ux500: move ab8500_regulator_plat_data into driver
    ARM: ux500: remove unused regulator data
    soc: raspberrypi-power: add CONFIG_OF dependency
    firmware: scpi: add CONFIG_OF dependency
    video: clps711x-fb: Changing the compatibility string to match with the smallest supported chip
    input: clps711x-keypad: Changing the compatibility string to match with the smallest supported chip
    pwm: clps711x: Changing the compatibility string to match with the smallest supported chip
    serial: clps711x: Changing the compatibility string to match with the smallest supported chip
    irqchip: clps711x: Changing the compatibility string to match with the smallest supported chip
    clocksource: clps711x: Changing the compatibility string to match with the smallest supported chip
    clk: clps711x: Changing the compatibility string to match with the smallest supported chip
    ...

    Linus Torvalds
     
  • 6f888fe31   Merge tag 'armsoc-cleanup' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc ... Browse Code »

    Pull ARM SoC cleanups from Olof Johansson:
    "The cleanup branch keeps going down in size as we've completed a lot
    of the major legacy platform removals and conversions.

    A handful of changes this time around, some of the themes or larger
    sets are:

    - A bunch of i.MX cleanups around platform detection, init call cleanups
    - Misc fixes of missing/implicit includes
    - Removal of ARCH_[WANT_OPTIONAL|REQUIRE]_GPIOLIB"

    * tag 'armsoc-cleanup' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (40 commits)
    ARM: mps2: fix typo
    ARM: s3c64xx: avoid warning about 'struct device_node'
    bus: mvebu-mbus: make mvebu_mbus_syscore_ops static
    bus: mvebu-mbus: fix __iomem on register pointers
    ARM: tegra: Remove board_init_funcs array
    ARM: iop: Fix indentation
    ARM: imx: remove cpu_is_mx*()
    ARM: imx: remove last call to cpu_is_mx5*
    ARM: imx: rework mx27_pm_init() call
    ARM: imx: deconstruct mx3_idle
    ARM: imx: deconstruct mxc_rnga initialization
    ARM: imx: remove cpu_is_mx1 check
    ARM: i.MX: Do not explicitly call l2x0_of_init()
    ARM: i.MX: system.c: Tweak prefetch settings for performance
    ARM: i.MX: system.c: Replace magic numbers
    ARM: i.MX: system.c: Remove redundant errata 752271 code
    ARM: i.MX: system.c: Convert goto to if statement
    ARM: Kirkwood: fix kirkwood_pm_init() declaration/type
    ARM: Kirkwood: make kirkwood_disable_mbus_error_propagation() static
    ARM: orion5x: make orion5x_legacy_handle_irq static
    ...

    Linus Torvalds
     

06 Jul, 2016

1 commit

  • 4fcd504ed   power: reset: add reboot mode driver ... Browse Code »

    This driver parses the reboot commands like "reboot bootloader"
    and "reboot recovery" to get a boot mode described in the
    device tree , then call the write interfae to store the boot
    mode in some place like special register or sram, which can
    be read by the bootloader after system reboot, then the bootloader
    can take different action according to the mode stored.

    This is commonly used on Android based devices, in order to
    reboot the device into fastboot or recovery mode.

    Reviewed-by: Matthias Brugger
    Reviewed-by: Moritz Fischer
    Tested-by: John Stultz
    Acked-by: John Stultz
    Signed-off-by: Andy Yan
    Reviewed-by: Krzysztof Kozlowski
    Signed-off-by: Sebastian Reichel

    Andy Yan
     

13 Jun, 2016

1 commit

  • 0a14d280e   power: vexpress: make dev_attr_active static ... Browse Code »

    The dev_attr_active is not exported or defined to be used
    outside the driver, so make it static to avoid the following
    warning:

    drivers/power/reset/vexpress-poweroff.c:77:1: warning: symbol 'dev_attr_active' was not declared. Should it be static?

    Cc: Liviu Dudau
    Cc: Lorenzo Pieralisi
    Signed-off-by: Ben Dooks
    Signed-off-by: Sudeep Holla

    Ben Dooks
     

10 Jun, 2016

1 commit

  • d04b674e1   power/reset: make syscon_poweroff() static ... Browse Code »

    The syscon_poweroff() function is not exported or declared for
    usage elsewhere, so make it static to avoid the folloiwing warning:

    drivers/power/reset/syscon-poweroff.c:33:6: warning: symbol 'syscon_poweroff' was not declared. Should it be static?

    Signed-off-by: Ben Dooks
    Reviewed-by: Krzysztof Kozlowski
    Signed-off-by: Sebastian Reichel

    Ben Dooks
     

07 Jun, 2016

1 commit

03 Jun, 2016

1 commit

10 Apr, 2016

1 commit

  • f80cb4884   power: reset: at91-shdwc: add new shutdown controller driver ... Browse Code »

    Sama5d2 SoC has a completely new shutdown controller with new features and
    register layout. It thus makes sense to add a new driver for this new
    peripheral.

    This driver is Device Tree only and handles events from the wake-up pin and
    the RTC.
    As the register layout may change in the future, so some values are encoded
    in a configuration structure.

    Signed-off-by: Nicolas Ferre
    Acked-by: Alexandre Belloni
    Signed-off-by: Sebastian Reichel

    Nicolas Ferre
     

15 Feb, 2016

2 commits

05 Dec, 2015

1 commit

  • c4c0edfbf   power/reset: at91-reset: add missing of_node_put ... Browse Code »

    for_each_matching_node performs an of_node_get on each iteration, so
    a break out of the loop requires an of_node_put.

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

    //
    @@
    expression e,e1;
    local idexpression np;
    @@

    for_each_matching_node(np, e1) {
    ... when != of_node_put(np)
    when != e = np
    (
    return np;
    |
    + of_node_put(np);
    ? return ...;
    )
    ...
    }
    //

    Signed-off-by: Julia Lawall
    Signed-off-by: Sebastian Reichel

    Julia Lawall
     

22 Sep, 2015

6 commits

27 Jul, 2015

1 commit

24 Jul, 2015

1 commit

21 Jul, 2015

1 commit

  • 1ae25d626   power: reset: at91: add sama5d3 reset function ... Browse Code »

    This patch introduces a new compatible string: "atmel,sama5d3-rstc" and
    new reset function for sama5d3 and later chips.

    As in sama5d3 or later chips, we don't have to shutdown the DDR
    controller before reset. Shutdown the DDR controller before reset is a
    workaround to avoid DDR signal driving the bus, but since sama5d3 and
    later chips there is no such a conflict.

    So in this patch:
    1. the sama5d3 reset function only need to write the rstc register
    and return.
    2. we can remove the code related with sama5d3 DDR controller as
    we don't use it at all.

    Signed-off-by: Josh Wu
    Acked-by: Nicolas Ferre
    Acked-by: Alexandre Belloni
    Reviewed-by: Guenter Roeck
    Signed-off-by: Sebastian Reichel

    Josh Wu