Eric Lee / smarc-fsl-linux-kernel

05 Sep, 2015

1 commit

  • dfe6c04aa   rtc: sirfsoc: move to regmap APIs from platform-specific APIs ... Browse Code »

    The current codes use CSR platform specific API exported by machine
    codes to read/write RTC registers. they are:
    sirfsoc_rtc_iobrg_readl()
    sirfsoc_rtc_iobrg_writel()

    commit b1999477ed91 ("ARM: prima2: move to use REGMAP APIs for rtciobrg")
    moves to regmap support, now we can move to use regmap APIs in RTC
    driver.

    Signed-off-by: Guo Zeng
    Signed-off-by: Barry Song
    Signed-off-by: Alexandre Belloni

    Guo Zeng
     

15 Dec, 2014

1 commit

  • e6b5be2be   Merge tag 'driver-core-3.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core ... Browse Code »

    Pull driver core update from Greg KH:
    "Here's the set of driver core patches for 3.19-rc1.

    They are dominated by the removal of the .owner field in platform
    drivers. They touch a lot of files, but they are "simple" changes,
    just removing a line in a structure.

    Other than that, a few minor driver core and debugfs changes. There
    are some ath9k patches coming in through this tree that have been
    acked by the wireless maintainers as they relied on the debugfs
    changes.

    Everything has been in linux-next for a while"

    * tag 'driver-core-3.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (324 commits)
    Revert "ath: ath9k: use debugfs_create_devm_seqfile() helper for seq_file entries"
    fs: debugfs: add forward declaration for struct device type
    firmware class: Deletion of an unnecessary check before the function call "vunmap"
    firmware loader: fix hung task warning dump
    devcoredump: provide a one-way disable function
    device: Add dev__once variants
    ath: ath9k: use debugfs_create_devm_seqfile() helper for seq_file entries
    ath: use seq_file api for ath9k debugfs files
    debugfs: add helper function to create device related seq_file
    drivers/base: cacheinfo: remove noisy error boot message
    Revert "core: platform: add warning if driver has no owner"
    drivers: base: support cpu cache information interface to userspace via sysfs
    drivers: base: add cpu_device_create to support per-cpu devices
    topology: replace custom attribute macros with standard DEVICE_ATTR*
    cpumask: factor out show_cpumap into separate helper function
    driver core: Fix unbalanced device reference in drivers_probe
    driver core: fix race with userland in device_add()
    sysfs/kernfs: make read requests on pre-alloc files use the buffer.
    sysfs/kernfs: allow attributes to request write buffer be pre-allocated.
    fs: sysfs: return EGBIG on write if offset is larger than file size
    ...

    Linus Torvalds
     

11 Dec, 2014

3 commits

20 Oct, 2014

1 commit

04 Apr, 2014

2 commits

  • 3916b09ee   drivers/rtc/rtc-sirfsoc.c: fix kernel panic of backing from hibernation ... Browse Code »

    RTC settings will be lost if power supply is cut off after hibernation
    finished, but the current "restore" function does not restore RTC related
    settings, this causes rtc_read_time failure and kernel panic:

    rtc rtc0: **** DPM device timeout ****
    Stack trace:
    unwind_backtrace+0x0/0xf4
    show_stack+0x10/0x14
    dpm_wd_handler+0x24/0x28
    call_timer_fn.isra.33+0x24/0x88
    run_timer_softirq+0x178/0x1f0
    __do_softirq+0x120/0x200
    do_softirq+0x54/0x5c
    irq_exit+0x9c/0xd0
    handle_IRQ+0x44/0x90
    __irq_svc+0x40/0x70
    _raw_spin_unlock_irqrestore+0x10/0x48
    sirfsoc_rtc_iobrg_readl+0x34/0x3c
    sirfsoc_rtc_read_time+0x24/0x48
    __rtc_read_time.isra.3+0x48/0x5c
    rtc_read_time+0x30/0x44
    rtc_resume.part.9+0x20/0x104
    rtc_resume+0x5c/0x64
    dpm_run_callback.isra.4+0x2c/0x74
    device_resume+0x9c/0x144
    dpm_resume+0x100/0x224
    hibernation_snapshot+0x170/0x398
    hibernate+0x13c/0x1d8
    state_store+0xb4/0xb8
    kobj_attr_store+0x14/0x20
    sysfs_write_file+0x160/0x190
    vfs_write+0xb4/0x194
    SyS_write+0x3c/0x78

    this patch uses SIMPLE_DEV_PM_OPS() to make restore() execute the
    existing resume() function which will restore the set of RTC.

    Signed-off-by: Xianglong Du
    Signed-off-by: Barry Song
    Cc: Grant Likely
    Cc: Rob Herring
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Xianglong Du
     
  • 98e2d21fa   rtc: rtc-sirfsoc: remove unnecessary OOM messages ... Browse Code »

    The site-specific OOM messages are unnecessary, because they duplicate
    the MM subsystem generic OOM message.

    Signed-off-by: Jingoo Han
    Acked-by: Barry Song
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Jingoo Han
     

13 Nov, 2013

3 commits

12 Sep, 2013

1 commit

  • 28984c7d9   drivers/rtc/rtc-sirfsoc.c: fix kernel warning during wakeup ... Browse Code »

    enable_irq_wake() might fail, if so, we will see kernel warning in resume
    entries due to it always calls disable_irq_wake().

    WARNING: at kernel/irq/manage.c:529 irq_set_irq_wake+0xc4/0xf0()
    Unbalanced IRQ 52 wake disable
    Modules linked in: ipv6 libcomposite configfs
    CPU: 0 PID: 1591 Comm: ash Tainted: G W 3.10.0-00854-gdbd86d4-dirty #100
    (unwind_backtrace+0x0/0xf8) from (show_stack+0x10/0x14)
    (show_stack+0x10/0x14) from (warn_slowpath_common+0x54/0x68)
    (warn_slowpath_common+0x54/0x68) from (warn_slowpath_fmt+0x30/0x40)
    (warn_slowpath_fmt+0x30/0x40) from (irq_set_irq_wake+0xc4/0xf0)
    (irq_set_irq_wake+0xc4/0xf0) from (sirfsoc_rtc_restore+0x30/0x38)
    (sirfsoc_rtc_restore+0x30/0x38) from (platform_pm_restore+0x2c/0x50)
    (platform_pm_restore+0x2c/0x50) from (dpm_run_callback.clone.6+0x30/0xb0)
    (dpm_run_callback.clone.6+0x30/0xb0) from (device_resume+0x88/0x134)
    (device_resume+0x88/0x134) from (dpm_resume+0x114/0x230)
    (dpm_resume+0x114/0x230) from (hibernation_snapshot+0x178/0x1d0)
    (hibernation_snapshot+0x178/0x1d0) from (hibernate+0x130/0x1dc)
    (hibernate+0x130/0x1dc) from (state_store+0xb4/0xc0)
    (state_store+0xb4/0xc0) from (kobj_attr_store+0x14/0x20)
    (kobj_attr_store+0x14/0x20) from (sysfs_write_file+0xfc/0x17c)
    (sysfs_write_file+0xfc/0x17c) from (vfs_write+0xc8/0x194)
    (vfs_write+0xc8/0x194) from (SyS_write+0x40/0x6c)
    (SyS_write+0x40/0x6c) from (ret_fast_syscall+0x0/0x30)

    To avoid unbalanced "IRQ wake disable", ensure that disable_irq_wake() is
    called only when enable_irq_wake() have been successfully enabled.

    Signed-off-by: Xianglong Du
    Signed-off-by: Barry Song
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Xianglong Du
     

04 Jul, 2013

1 commit

  • e88b815e0   drivers/rtc/rtc-sirfsoc.c: add rtc drivers for CSR SiRFprimaII and SiRFatlasVI ... Browse Code »

    On CSR SiRFprimaII/atlasVI, there is a programmable 16-bit divider
    (RTC_DIV) that divides the input 32.768KHz clock to the frequency that
    users need (E.g. 1 Hz). The divided real-time clock will be used to
    drive a 32-bit counter (RTC_COUNTER) that provides users with the actual
    time.

    In each cycle of the divided real-time clock, there is a Hertz interrupt
    generated to the RISC. Users can also configure an alarm (RTC_ALARM).
    When RTC_COUNTER matches the alarm, there will be an alarm interrupt
    generated to the RISC.

    The system RTC can generate an alarm wake-up signal to notify the power
    controller to wake up from power saving mode.

    Signed-off-by: Xianglong Du
    Signed-off-by: Barry Song
    Cc: Jingoo Han
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Xianglong Du