Minki/linux
1
0
Fork 1
mirror of https://github.com/torvalds/linux.git synced 2024-12-04 18:13:04 +00:00
Code Issues Packages Projects Releases Wiki Activity

irqchip: omap-intc: enable TURBO idle mode

Browse Source 
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>
This commit is contained in:
Felipe Balbi 2014-09-15 16:15:07 -05:00 committed by Tony Lindgren
parent 9836ee9f87
commit b30791498a
1 changed files with 5 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
drivers/irqchip/irq-omap-intc.c
View File

@ -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) */