Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit b3079149 authored by Felipe Balbi's avatar Felipe Balbi Committed by Tony Lindgren
Browse files

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: default avatarJason Cooper <jason@lakedaemon.net>
Signed-off-by: default avatarFelipe Balbi <balbi@ti.com>
Signed-off-by: default avatarTony Lindgren <tony@atomide.com>
parent 9836ee9f

drivers/irqchip/irq-omap-intc.c

+5 −0
Original line number Diff line number Diff line
@@ -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) */