Commit dd6fe9a9 authored Jul 03, 2013 by Joseph Lo Committed by Stephen Warren Jul 19, 2013

ARM: tegra: flowctrl: add support for cpu_suspend_enter/exit



The flow controller can help CPU to go into suspend mode (powered-down
state). When CPU goes into powered-down state, it needs some careful
settings before getting into and after leaving. The enter and exit
functions do that by configuring appropriate mode for flow controller.

For Tegra114, the setting is compatible with Tegra30.

Signed-off-by: Joseph Lo <josephl@nvidia.com>
Signed-off-by: Stephen Warren <swarren@nvidia.com>

parent b573ad9f

arch/arm/mach-tegra/flowctrl.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -86,6 +86,7 @@ void flowctrl_cpu_suspend_enter(unsigned int cpuid)
		reg \|= TEGRA20_FLOW_CTRL_CSR_WFE_CPU0 << cpuid;
		break;
		case TEGRA30:
		case TEGRA114:
		/* clear wfe bitmap */
		reg &= ~TEGRA30_FLOW_CTRL_CSR_WFE_BITMAP;
		/* clear wfi bitmap */
		@@ -123,6 +124,7 @@ void flowctrl_cpu_suspend_exit(unsigned int cpuid)
		reg &= ~TEGRA20_FLOW_CTRL_CSR_WFI_BITMAP;
		break;
		case TEGRA30:
		case TEGRA114:
		/* clear wfe bitmap */
		reg &= ~TEGRA30_FLOW_CTRL_CSR_WFE_BITMAP;
		/* clear wfi bitmap */