From f4cfa36dab6734466cd5639e0a1d7d753297cba4 Mon Sep 17 00:00:00 2001 From: Tony Lindgren Date: Mon, 16 Dec 2019 14:41:53 -0800 Subject: dmaengine: ti: omap-dma: Use cpu notifier to block idle for omap2 For omap2, we need to block idle if SDMA is busy. Let's do this with a cpu notifier and remove the custom call. Cc: Aaro Koskinen Cc: Arnd Bergmann Cc: Peter Ujfalusi Cc: Russell King Cc: Vinod Koul Acked-by: Peter Ujfalusi Tested-by: Peter Ujfalusi Acked-by: Vinod Koul Signed-off-by: Tony Lindgren --- arch/arm/mach-omap2/pm24xx.c | 22 ++++++++++------------ 1 file changed, 10 insertions(+), 12 deletions(-) (limited to 'arch/arm/mach-omap2/pm24xx.c') diff --git a/arch/arm/mach-omap2/pm24xx.c b/arch/arm/mach-omap2/pm24xx.c index 1581b6a6a416..6953c47d8dc6 100644 --- a/arch/arm/mach-omap2/pm24xx.c +++ b/arch/arm/mach-omap2/pm24xx.c @@ -83,8 +83,6 @@ static int omap2_enter_full_retention(void) l = omap_ctrl_readl(OMAP2_CONTROL_DEVCONF0) | OMAP24XX_USBSTANDBYCTRL; omap_ctrl_writel(l, OMAP2_CONTROL_DEVCONF0); - cpu_cluster_pm_enter(); - /* One last check for pending IRQs to avoid extra latency due * to sleeping unnecessarily. */ if (omap_irq_pending()) @@ -96,8 +94,6 @@ static int omap2_enter_full_retention(void) OMAP_SDRC_REGADDR(SDRC_POWER)); no_sleep: - cpu_cluster_pm_exit(); - clk_enable(osc_ck); /* clear CORE wake-up events */ @@ -162,25 +158,27 @@ static int omap2_can_sleep(void) return 0; if (__clk_is_enabled(osc_ck)) return 0; - if (omap_dma_running()) - return 0; return 1; } static void omap2_pm_idle(void) { - if (!omap2_can_sleep()) { - if (omap_irq_pending()) - return; - omap2_enter_mpu_retention(); - return; - } + int error; if (omap_irq_pending()) return; + error = cpu_cluster_pm_enter(); + if (error || !omap2_can_sleep()) { + omap2_enter_mpu_retention(); + goto out_cpu_cluster_pm; + } + omap2_enter_full_retention(); + +out_cpu_cluster_pm: + cpu_cluster_pm_exit(); } static void __init prcm_setup_regs(void) -- cgit v1.2.3