diff options
| author | Anson Huang <b20788@freescale.com> | 2011-07-19 13:29:54 +0800 |
|---|---|---|
| committer | Jason Liu <r64343@freescale.com> | 2012-07-20 13:14:47 +0800 |
| commit | f41455a6272388fb8f1b57e5402bf470469c1e35 (patch) | |
| tree | d71eebeaf156b2d9e512f44bf261fb899403075f /drivers/tty | |
| parent | 683b3c5bbb377e08043c814da860677b03815452 (diff) | |
ENGR00139274-2 [MX6]Enable suspend/resume
Enable suspend/resume for MX6, using debug
UART as wake up source due to hardware design
limitation.
Signed-off-by: Anson Huang <b20788@freescale.com>
Diffstat (limited to 'drivers/tty')
| -rw-r--r-- | drivers/tty/serial/imx.c | 18 |
1 files changed, 17 insertions, 1 deletions
diff --git a/drivers/tty/serial/imx.c b/drivers/tty/serial/imx.c index a54473123e0a..850b6d811418 100644 --- a/drivers/tty/serial/imx.c +++ b/drivers/tty/serial/imx.c @@ -502,6 +502,10 @@ static irqreturn_t imx_int(int irq, void *dev_id) if (sts & USR1_RTSD) imx_rtsint(irq, dev_id); +#ifdef CONFIG_ARCH_MX6 + if (sts & USR1_AWAKE) + writel(USR1_AWAKE, sport->port.membase + USR1); +#endif return IRQ_HANDLED; } @@ -1206,20 +1210,32 @@ static struct uart_driver imx_reg = { static int serial_imx_suspend(struct platform_device *dev, pm_message_t state) { struct imx_port *sport = platform_get_drvdata(dev); + unsigned int val; if (sport) uart_suspend_port(&imx_reg, &sport->port); - +#ifdef CONFIG_ARCH_MX6 + /* enable awake for MX6*/ + val = readl(sport->port.membase + UCR3); + val |= UCR3_AWAKEN; + writel(val, sport->port.membase + UCR3); +#endif return 0; } static int serial_imx_resume(struct platform_device *dev) { struct imx_port *sport = platform_get_drvdata(dev); + unsigned int val; if (sport) uart_resume_port(&imx_reg, &sport->port); +#ifdef CONFIG_ARCH_MX6 + val = readl(sport->port.membase + UCR3); + val &= ~UCR3_AWAKEN; + writel(val, sport->port.membase + UCR3); +#endif return 0; } |