linux-toradex.git/arch/arm/mach-tegra/hotplug.c, branch v3.14.23 Linux kernel for Apalis and Colibri modules ARM: tegra: CPU hotplug support for Tegra124 2013-10-18T22:28:08+00:00 Joseph Lo josephl@nvidia.com 2013-10-11T09:57:30+00:00 9997e62682e0fe68566c88f70ed320ded4e16529 The procedure of CPU hotplug for Tegra124 is same with Tegra114. We re-use the same function with it. Signed-off-by: Joseph Lo <josephl@nvidia.com> Signed-off-by: Stephen Warren <swarren@nvidia.com> 
The procedure of CPU hotplug for Tegra124 is same with Tegra114. We
re-use the same function with it.

Signed-off-by: Joseph Lo <josephl@nvidia.com>
Signed-off-by: Stephen Warren <swarren@nvidia.com>
ARM: tegra: add a flag for tegra_disable_clean_inv_dcache to do LoUIS or ALL 2013-07-19T16:08:05+00:00 Joseph Lo josephl@nvidia.com 2013-07-03T09:50:38+00:00 ac2527bfc21739b77d687df1bfc4e973103fef7b Adding a flag for tegra_disable_clean_inv_dcache to flush cache as LoUIS or ALL. After this patch, the v7_flush_dcache_louis is used for CPU hotplug and CPU suspend in CPU power down (e.g. CPU idle power-down mode) case. And the v7_flush_dcache_all is used for CPU cluster power down (e.g. suspend to LP2 mode). Signed-off-by: Joseph Lo <josephl@nvidia.com> Signed-off-by: Stephen Warren <swarren@nvidia.com> 
Adding a flag for tegra_disable_clean_inv_dcache to flush cache as LoUIS
or ALL. After this patch, the v7_flush_dcache_louis is used for CPU hotplug
and CPU suspend in CPU power down (e.g. CPU idle power-down mode) case. And
the v7_flush_dcache_all is used for CPU cluster power down (e.g. suspend to
LP2 mode).

Signed-off-by: Joseph Lo <josephl@nvidia.com>
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Revert "ARM: tegra: add cpu_disable for hotplug" 2013-07-19T16:00:37+00:00 Joseph Lo josephl@nvidia.com 2013-07-19T09:25:23+00:00 a99d34b506f746e607c96767d616553a5cc14758 This reverts commit 510bb59 "ARM: tegra: add cpu_disable for hotplug". The Tegra114 support CPU0 hotplug function in HW physically, but it needs other software to make it work normally after we add CPU idle power down mode support. So remove them for now. Signed-off-by: Joseph Lo <josephl@nvidia.com> Signed-off-by: Stephen Warren <swarren@nvidia.com> 
This reverts commit 510bb59 "ARM: tegra: add cpu_disable for hotplug".

The Tegra114 support CPU0 hotplug function in HW physically, but it needs
other software to make it work normally after we add CPU idle power down
mode support. So remove them for now.

Signed-off-by: Joseph Lo <josephl@nvidia.com>
Signed-off-by: Stephen Warren <swarren@nvidia.com>
ARM: tegra: add cpu_disable for hotplug 2013-05-28T21:26:07+00:00 Joseph Lo josephl@nvidia.com 2013-05-21T10:13:35+00:00 510bb595de26f90e5bb7c4a1e2a584e38398cf00 The Tegra114 could hotplug the CPU0, but the common cpu_disable didn't support that. Adding a Tegra specific cpu_disable function for it. Signed-off-by: Joseph Lo <josephl@nvidia.com> [swarren: adjusted the switch statement to be future-proof] Signed-off-by: Stephen Warren <swarren@nvidia.com> 
The Tegra114 could hotplug the CPU0, but the common cpu_disable didn't
support that. Adding a Tegra specific cpu_disable function for it.

Signed-off-by: Joseph Lo <josephl@nvidia.com>
[swarren: adjusted the switch statement to be future-proof]
Signed-off-by: Stephen Warren <swarren@nvidia.com>
ARM: tegra114: add CPU hotplug support 2013-05-22T21:19:22+00:00 Joseph Lo josephl@nvidia.com 2013-05-20T10:39:29+00:00 33d5c01915ccca298a5fda7e0cb33199d225e03a The Tegra114 is a quad cores SoC. Each core can be hotplugged including CPU0. The hotplug sequence can be controlled by setting event trigger in flow controller. Then the flow controller will take care all the power sequence that include CPU up and down. Signed-off-by: Joseph Lo <josephl@nvidia.com> Signed-off-by: Stephen Warren <swarren@nvidia.com> 
The Tegra114 is a quad cores SoC. Each core can be hotplugged including
CPU0. The hotplug sequence can be controlled by setting event trigger in
flow controller. Then the flow controller will take care all the power
sequence that include CPU up and down.

Signed-off-by: Joseph Lo <josephl@nvidia.com>
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Merge branch 'for-linus' of git://git.linaro.org/people/rmk/linux-arm 2013-05-03T16:13:19+00:00 Linus Torvalds torvalds@linux-foundation.org 2013-05-03T16:13:19+00:00 8546dc1d4b671480961c3eaf4c0c102ae6848340 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() ... 
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()
  ...
ARM: cpu hotplug: remove majority of cache flushing from platforms 2013-04-18T19:08:04+00:00 Russell King rmk+kernel@arm.linux.org.uk 2013-04-18T17:15:44+00:00 bca7a5a04933700a8bde4ea5798119607a8b0436 Remove the majority of cache flushing calls from the individual platform files. This is now handled by the core code. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> 
Remove the majority of cache flushing calls from the individual platform
files.  This is now handled by the core code.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
ARM: tegra: remove tegra specific cpu_disable() 2013-04-18T17:04:09+00:00 Russell King rmk+kernel@arm.linux.org.uk 2013-04-18T17:04:09+00:00 da2265b130f6b5be3b874bb2832335887fe59461 The tegra cpu_disable() function is the same as the generic version in arch/arm/kernel/smp.c. Therefore, it can be removed. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> 
The tegra cpu_disable() function is the same as the generic version
in arch/arm/kernel/smp.c.  Therefore, it can be removed.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
ARM: tegra: Unify tegra{20,30,114}_init_early() 2013-03-11T20:29:43+00:00 Hiroshi Doyu hdoyu@nvidia.com 2013-02-13T17:15:48+00:00 7469688e832e340a84a1f6d4c290d8680c723256 Refactored tegra{20,30,114}_init_early() so that we have the unified tegra_init_early(). Signed-off-by: Hiroshi Doyu <hdoyu@nvidia.com> Signed-off-by: Stephen Warren <swarren@nvidia.com> 
Refactored tegra{20,30,114}_init_early() so that we have the unified
tegra_init_early().

Signed-off-by: Hiroshi Doyu <hdoyu@nvidia.com>
Signed-off-by: Stephen Warren <swarren@nvidia.com>
ARM: tegra: move tegra_cpu_car.h to linux/clk/tegra.h 2013-01-28T18:19:06+00:00 Prashant Gaikwad pgaikwad@nvidia.com 2013-01-11T07:46:21+00:00 89572c77cdffdf24f8fec50d3e38db6a18c04dbe tegra_cpu_car_ops struct is going to be accessed from drivers/clk/tegra. Move the tegra_cpu_car_ops to include/linux/clk/tegra.h. Signed-off-by: Prashant Gaikwad <pgaikwad@nvidia.com> Signed-off-by: Stephen Warren <swarren@nvidia.com> 
tegra_cpu_car_ops struct is going to be accessed from drivers/clk/tegra.
Move the tegra_cpu_car_ops to include/linux/clk/tegra.h.

Signed-off-by: Prashant Gaikwad <pgaikwad@nvidia.com>
Signed-off-by: Stephen Warren <swarren@nvidia.com>