commit: 5ae256dcd91bf308826a4ac19598b27ebb86a536 From: Santosh Shilimkar <[email protected]> Date: Fri, 13 Apr 2012 23:25:04 +0530 Subject: ARM: OMAP: serial: Fix the ocp smart idlemode handling bug
The current serial UART code, while fidling with ocp idlemode bits, forget about the smart idle wakeup bit even if it is supported by UART IP block. This will lead to missing the module wakeup on OMAP's where the smart idle wakeup is supported. This was the root cause of the console sluggishness issue, I have been observing on OMAP4 devices and also can be potential reason for some other UART wakeup issues. Signed-off-by: Santosh Shilimkar <[email protected]> Acked-by: Kevin Hilman <[email protected]> Acked-by: Govindraj.R <[email protected]> Reviewed-by: Paul Walmsley <[email protected]> Cc: [email protected] Signed-off-by: Tony Lindgren <[email protected]> --- arch/arm/mach-omap2/serial.c | 8 +++++++- 1 files changed, 7 insertions(+), 1 deletions(-) diff --git a/arch/arm/mach-omap2/serial.c b/arch/arm/mach-omap2/serial.c index 2e351f5..9fc2f44 100644 --- a/arch/arm/mach-omap2/serial.c +++ b/arch/arm/mach-omap2/serial.c @@ -108,8 +108,14 @@ static void omap_uart_set_noidle(struct platform_device *pdev) static void omap_uart_set_smartidle(struct platform_device *pdev) { struct omap_device *od = to_omap_device(pdev); + u8 idlemode; - omap_hwmod_set_slave_idlemode(od->hwmods[0], HWMOD_IDLEMODE_SMART); + if (od->hwmods[0]->class->sysc->idlemodes & SIDLE_SMART_WKUP) + idlemode = HWMOD_IDLEMODE_SMART_WKUP; + else + idlemode = HWMOD_IDLEMODE_SMART; + + omap_hwmod_set_slave_idlemode(od->hwmods[0], idlemode); } #else -- 1.7.3.4 -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
