lwn.git/arch/arm/mach-omap2/powerdomain.c, branch v3.17-rc4

ARM: OMAP2+: PRCM: cleanup some header includes

2014-05-16T04:34:48+00:00

Some of the includes are totally unnecessary, remove some others in preparation to make the PRCM its own driver. Signed-off-by: Tero Kristo [paul@pwsan.com: updated to apply; fixed build error on OMAP2xxx-only configs] Signed-off-by: Paul Walmsley

ARM: OMAP2+: Powerdomain: Fix unchecked dereference of arch_pwrdm

2013-12-02T19:38:14+00:00

Commit 'cd8abed' "ARM: OMAP2+: Powerdomain: Remove the need to always have a voltdm associated to a pwrdm" leads to the following Smatch complaint: arch/arm/mach-omap2/powerdomain.c:131 _pwrdm_register() error: we previously assumed 'arch_pwrdm' could be null (see line 105) So, fix the unchecked dereference of arch_pwrdm. Reported-by: Dan Carpenter Acked-by: Nishanth Menon Signed-off-by: Rajendra Nayak Signed-off-by: Tony Lindgren

ARM: OMAP2+: Powerdomain: Remove the need to always have a voltdm associated to a pwrdm

2013-06-17T14:25:14+00:00

The powerdomain framework currently expects all powerdomains to be associated with a corresponding voltagedomain. For some SoCs' (like the already existing AM33xx family, or for the upcoming AM437x and DRA7 SoCs') which do not have a Voltage controller/Voltage Processor (neither the SR I2C bus to communicate with the PMIC) there is no need for a Powerdomain to have a voltage domain association since there is no auto-scaling of voltages possible using the voltage FSM. Extend the arch operations to add an api which the powerdomain core can then use to identify if a voltdm lookup and association for a powerdomain is really needed. Acked-by: Nishanth Menon Acked-by: Vaibhav Hiremath Signed-off-by: Rajendra Nayak Acked-by: Santosh Shilimkar Tested-by: Afzal Mohammed # am335x evm Signed-off-by: Kevin Hilman

Merge branch 'for-linus' of git://git.linaro.org/people/rmk/linux-arm

2013-05-03T16:13:19+00:00

Pull ARM updates from Russell King: "The major items included in here are: - MCPM, multi-cluster power management, part of the infrastructure required for ARMs big.LITTLE support. - A rework of the ARM KVM code to allow re-use by ARM64. - Error handling cleanups of the IS_ERR_OR_NULL() madness and fixes of that stuff for arch/arm - Preparatory patches for Cortex-M3 support from Uwe Kleine-König. There is also a set of three patches in here from Hugh/Catalin to address freeing of inappropriate page tables on LPAE. You already have these from akpm, but they were already part of my tree at the time he sent them, so unfortunately they'll end up with duplicate commits" * 'for-linus' of git://git.linaro.org/people/rmk/linux-arm: (77 commits) ARM: EXYNOS: remove unnecessary use of IS_ERR_VALUE() ARM: IMX: remove unnecessary use of IS_ERR_VALUE() ARM: OMAP: use consistent error checking ARM: cleanup: OMAP hwmod error checking ARM: 7709/1: mcpm: Add explicit AFLAGS to support v6/v7 multiplatform kernels ARM: 7700/2: Make cpu_init() notrace ARM: 7702/1: Set the page table freeing ceiling to TASK_SIZE ARM: 7701/1: mm: Allow arch code to control the user page table ceiling ARM: 7703/1: Disable preemption in broadcast_tlb*_a15_erratum() ARM: mcpm: provide an interface to set the SMP ops at run time ARM: mcpm: generic SMP secondary bringup and hotplug support ARM: mcpm_head.S: vlock-based first man election ARM: mcpm: Add baremetal voting mutexes ARM: mcpm: introduce helpers for platform coherency exit/setup ARM: mcpm: introduce the CPU/cluster power API ARM: multi-cluster PM: secondary kernel entry code ARM: cacheflush: add synchronization helpers for mixed cache state accesses ARM: cpu hotplug: remove majority of cache flushing from platforms ARM: smp: flush L1 cache in cpu_die() ARM: tegra: remove tegra specific cpu_disable() ...

Merge branch 'cleanup' into for-linus

2013-05-02T20:31:29+00:00

Conflicts: arch/arm/plat-omap/dmtimer.c

ARM: OMAP2+: powerdomain: avoid testing whether an unsigned char is less than 0

2013-04-01T02:22:22+00:00

_pwrdm_save_clkdm_state_and_activate() tried to test one of its unsigned arguments to determine whether it was less than zero. Fix by moving the error test to the caller. Reported-by: Chen Gang Signed-off-by: Paul Walmsley

ARM: cleanup: pwrdm_can_ever_lose_context() checking

2013-02-24T10:55:24+00:00

pwrdm_can_ever_lose_context() is only ever called from the OMAP GPIO code, and only with a pointer returned from omap_hwmod_get_pwrdm(). omap_hwmod_get_pwrdm() only ever returns NULL on error, so using IS_ERR_OR_NULL() to validate the passed pointer is silly. Use a simpler !ptr check instead. Signed-off-by: Russell King

ARM: OMAP2+: powerdomain/clockdomain: add a per-powerdomain spinlock

2013-01-29T21:59:57+00:00

Add a per-powerdomain spinlock. Use that instead of the clockdomain spinlock. Add pwrdm_lock()/pwrdm_unlock() functions to allow other code to acquire or release the powerdomain spinlock without reaching directly into the struct powerdomain. Signed-off-by: Paul Walmsley Cc: Jean Pihet

ARM: OMAP2+: PM/powerdomain: move omap_set_pwrdm_state() to powerdomain code

2013-01-29T21:59:57+00:00

Move omap_set_pwrdm_state() from the PM code to the powerdomain code, and refactor it to split it up into several functions. A subsequent patch will rename it to conform with the existing powerdomain function names. This version includes some additional documentation, based on a suggestion from Jean Pihet. It also modifies omap_set_pwrdm_state() to not bail out early unless both the powerdomain current power state and the next power state are equal. (Previously it would terminate early if the next power state was equal to the target power state, which was insufficiently rigorous.) Signed-off-by: Paul Walmsley Cc: Jean Pihet Cc: Kevin Hilman Cc: Tero Kristo

ARM: OMAP2: PM/powerdomain: drop unnecessary pwrdm_wait_transition()

2013-01-29T21:59:57+00:00

Drop an unnecessary pwrdm_wait_transition() from mach-omap2/pm.c - it's called by the subsequent pwrdm_state_switch(). Also get rid of pwrdm_wait_transition() in the powerdomain code - there's no longer any need to export this function. Signed-off-by: Paul Walmsley Cc: Kevin Hilman