kernel.git/arch/x86/kernel/pmc_atom.c, branch linux-3.18.y

x86: pmc-atom: Assign debugfs node as soon as possible

2015-03-06T22:53:06Z

commit 1b43d7125f3b6f7d46e72da64f65f3187a83b66b upstream. pmc_dbgfs_unregister() will be called when pmc->dbgfs_dir is unconditionally NULL on error path in pmc_dbgfs_register(). To prevent this we move the assignment to where is should be. Fixes: f855911c1f48 (x86/pmc_atom: Expose PMC device state and platform sleep state) Reported-by: Thomas Gleixner Signed-off-by: Andy Shevchenko Cc: Aubrey Li Cc: Rafael J. Wysocki Cc: Kumar P. Mahesh Link: http://lkml.kernel.org/r/1421253575-22509-2-git-send-email-andriy.shevchenko@linux.intel.com Signed-off-by: Thomas Gleixner Signed-off-by: Greg Kroah-Hartman

x86/platform/pmc_atom: Fix warning when CONFIG_DEBUG_FS=n

2014-09-19T11:02:21Z

When compiling with CONFIG_DEBUG_FS=n, GCC emits an unused variable warning for pmc_atom.c because "ret" is used only within the CONFIG_DEBUG_FS block. This patch adds a dummy #ifdef for pmc_dbgfs_register() when CONFIG_DEBUG_FS=n to simplify the code and remove the warning. Signed-off-by: Martin Kelly Acked-by: "Li, Aubrey" Cc: vishwesh.m.rudramuni@intel.com Link: http://lkml.kernel.org/r/1410963476-8360-1-git-send-email-martin@martingkelly.com Signed-off-by: Ingo Molnar

x86/pmc_atom: Silence shift wrapping warnings in pmc_sleep_tmr_show()

2014-08-02T23:52:17Z

I don't know if we really need 64 bits here but these variables are declared as u64 and it can't hurt to cast this so we prevent any shift wrapping. Signed-off-by: Dan Carpenter Acked-by: Aubrey Li Link: http://lkml.kernel.org/r/20140801082715.GE28869@mwanda Signed-off-by: H. Peter Anvin

x86/pmc_atom: Expose PMC device state and platform sleep state

2014-07-25T21:12:14Z

Add the following interfaces to exposes PMC device state and sleep state residency via debugfs: /sys/kernel/debugfs/pmc_atom/dev_state /sys/kernel/debugfs/pmc_atom/sleep_state Signed-off-by: Aubrey Li Link: http://lkml.kernel.org/r/53B0FF59.8000600@linux.intel.com Signed-off-by: Kasagar, Srinidhi Reviewed-by: Rudramuni, Vishwesh M Reviewed-by: Joe Perches Signed-off-by: H. Peter Anvin

x86/pmc_atom: Eisable a few S0ix wake up events for S0ix residency

2014-07-25T21:11:58Z

Disable PMC S0IX_WAKE_EN events coming from LPC block(unused) and also from GPIO_SUS ored dedicated IRQs (must be disabled as per PMC programming rule), GPIOSCORE ored dedicated IRQs (must be disabled as per PMC programming rule), GPIO_SUS shared IRQ (not necessary since the IOAPIC_DS wake event will still work), GPIO_SCORE shared IRQ (not necessary since the IOAPIC_DS wake event will still work). Signed-off-by: Aubrey Li Link: http://lkml.kernel.org/r/53B0FF22.5080403@linux.intel.com Signed-off-by: Olivier Leveque Signed-off-by: H. Peter Anvin

x86/platform: New Intel Atom SOC power management controller driver

2014-07-25T21:11:29Z

The Power Management Controller (PMC) controls many of the power management features present in the Atom SoC. This driver provides a native power off function via PMC PCI IO port. On some ACPI hardware-reduced platforms(e.g. ASUS-T100), ACPI sleep registers are not valid so that (*pm_power_off)() is not hooked by acpi_power_off(). The power off function in this driver is installed only when pm_power_off is NULL. Signed-off-by: Aubrey Li Link: http://lkml.kernel.org/r/53B0FEEA.3010805@linux.intel.com Signed-off-by: Lejun Zhu Signed-off-by: H. Peter Anvin