diff options
| author | Felipe Balbi <balbi@ti.com> | 2014-09-16 01:15:07 +0400 |
|---|---|---|
| committer | Tony Lindgren <tony@atomide.com> | 2014-09-17 01:45:00 +0400 |
| commit | b30791498a140d9460dfb9cb8edcb6fd1065363c (patch) | |
| tree | 04e8f867d7e51679b2a9c1df91652668c248cf22 /drivers/irqchip | |
| parent | 9836ee9f87dc669c8ce2b24ba986600a6977ca8b (diff) | |
| download | linux-b30791498a140d9460dfb9cb8edcb6fd1065363c.tar.xz | |
irqchip: omap-intc: enable TURBO idle mode
When TURBO bit is set in the INTC_IDLE register,
the input synchronizer clock will be autogated
based on activity on the INTC.
Because this idle mode increases the interrupt
latency by 2 clock cycles, we're only enabling
it during suspend.
Acked-by: Jason Cooper <jason@lakedaemon.net>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Diffstat (limited to 'drivers/irqchip')
| -rw-r--r-- | drivers/irqchip/irq-omap-intc.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/irqchip/irq-omap-intc.c b/drivers/irqchip/irq-omap-intc.c index 7681b1329976..dfa2d9de5361 100644 --- a/drivers/irqchip/irq-omap-intc.c +++ b/drivers/irqchip/irq-omap-intc.c @@ -51,6 +51,9 @@ #define INTCPS_NR_ILR_REGS 128 #define INTCPS_NR_MIR_REGS 3 +#define INTC_IDLE_FUNCIDLE (1 << 0) +#define INTC_IDLE_TURBO (1 << 1) + #define INTC_PROTECTION_ENABLE (1 << 0) /* @@ -134,12 +137,14 @@ void omap3_intc_prepare_idle(void) * cf. errata ID i540 for 3430 (all revisions up to 3.1.x) */ intc_writel(INTC_SYSCONFIG, 0); + intc_writel(INTC_IDLE, INTC_IDLE_TURBO); } void omap3_intc_resume_idle(void) { /* Re-enable autoidle */ intc_writel(INTC_SYSCONFIG, 1); + intc_writel(INTC_IDLE, 0); } /* XXX: FIQ and additional INTC support (only MPU at the moment) */ |