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Commit 715e1e4d authored by Naveen Kaje's avatar Naveen Kaje Committed by Gerrit - the friendly Code Review server
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msm_serial_hs: handle UART IRQ during PM operations for OBS 



In OBS, enable/disable UART IRQ during power management operations
to allow the device to enter low power modes.

Change-Id: I8479d6bc867c4ecb34adf83cd62b01f6fb60fef8
Signed-off-by: default avatarNaveen Kaje <nkaje@codeaurora.org>
parent aa3aa09a

drivers/tty/serial/msm_serial_hs.c

+14 −0
Original line number Diff line number Diff line
@@ -3041,6 +3041,18 @@ static int device_id_set_used(int index) 
	return ret;

}



static void obs_manage_irq(struct msm_hs_port *msm_uport, bool en)

{

	struct uart_port *uport = &(msm_uport->uport);



	if (msm_uport->obs) {

		if (en)

			enable_irq(uport->irq);

		else

			disable_irq(uport->irq);

	}

}



static void msm_hs_pm_suspend(struct device *dev)

{

	struct platform_device *pdev = to_platform_device(dev);
@@ -3061,6 +3073,7 @@ static void msm_hs_pm_suspend(struct device *dev) 


	msm_uport->pm_state = MSM_HS_PM_SUSPENDED;

	msm_hs_resource_off(msm_uport);

	obs_manage_irq(msm_uport, false);

	msm_hs_clk_bus_unvote(msm_uport);

	if (!atomic_read(&msm_uport->client_req_state))

		toggle_wakeup_interrupt(msm_uport);
@@ -3086,6 +3099,7 @@ static int msm_hs_pm_resume(struct device *dev) 
		toggle_wakeup_interrupt(msm_uport);

	msm_hs_clk_bus_vote(msm_uport);

	__pm_stay_awake(&msm_uport->ws);

	obs_manage_irq(msm_uport, true);

	msm_uport->pm_state = MSM_HS_PM_ACTIVE;

	msm_hs_resource_on(msm_uport);