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Commit 8c1200ed authored by Rama Krishna Phani A's avatar Rama Krishna Phani A
Browse files

serial: msm_geni_serial: Add support for s2d feature 



Add changes to support hibernation feature for the
serial UART driver.

Change-Id: I0dc19826e2fa1e90177ac7f5edd25e6967ddc465
Signed-off-by: default avatarRama Krishna Phani A <rphani@codeaurora.org>
parent 2c002bab

drivers/tty/serial/msm_geni_serial.c

+29 −0
Original line number Diff line number Diff line
@@ -2687,6 +2687,28 @@ static int msm_geni_serial_sys_resume_noirq(struct device *dev) 
	}

	return 0;

}



static int msm_geni_serial_sys_hib_resume_noirq(struct device *dev)

{

	struct platform_device *pdev = to_platform_device(dev);

	struct msm_geni_serial_port *port = platform_get_drvdata(pdev);

	struct uart_port *uport = &port->uport;

	unsigned long cfg0, cfg1;



	if (uart_console(uport) &&

	    console_suspend_enabled && uport->suspended) {

		uart_resume_port((struct uart_driver *)uport->private_data,

									uport);

		dev_dbg(dev, "%s\n", __func__);

		se_get_packing_config(8, 1, false, &cfg0, &cfg1);

		geni_write_reg_nolog(cfg0, uport->membase,

					SE_GENI_TX_PACKING_CFG0);

		geni_write_reg_nolog(cfg1, uport->membase,

					SE_GENI_TX_PACKING_CFG1);

		disable_irq(uport->irq);

	}

	return 0;

}

#else

static int msm_geni_serial_runtime_suspend(struct device *dev)

{
@@ -2707,6 +2729,11 @@ static int msm_geni_serial_sys_resume_noirq(struct device *dev) 
{

	return 0;

}



static int msm_geni_serial_sys_hib_resume_noirq(struct device *dev)

{

	return 0;

}

#endif



static const struct dev_pm_ops msm_geni_serial_pm_ops = {
@@ -2714,6 +2741,8 @@ static const struct dev_pm_ops msm_geni_serial_pm_ops = { 
	.runtime_resume = msm_geni_serial_runtime_resume,

	.suspend_noirq = msm_geni_serial_sys_suspend_noirq,

	.resume_noirq = msm_geni_serial_sys_resume_noirq,

	.freeze = msm_geni_serial_sys_suspend_noirq,

	.restore = msm_geni_serial_sys_hib_resume_noirq,

};



static struct platform_driver msm_geni_serial_platform_driver = {