diff options
| -rw-r--r-- | drivers/tty/serial/imx.c | 44 |
1 files changed, 30 insertions, 14 deletions
diff --git a/drivers/tty/serial/imx.c b/drivers/tty/serial/imx.c index 65cc4dd3f4d2..f31fa1e16ca7 100644 --- a/drivers/tty/serial/imx.c +++ b/drivers/tty/serial/imx.c @@ -626,10 +626,10 @@ static irqreturn_t imx_int(int irq, void *dev_id) if (sts & USR1_RTSD) imx_rtsint(irq, dev_id); - +#ifdef CONFIG_PM if (sts & USR1_AWAKE) writel(USR1_AWAKE, sport->port.membase + USR1); - +#endif return IRQ_HANDLED; } @@ -1057,7 +1057,9 @@ static int imx_startup(struct uart_port *port) } tty = sport->port.state->port.tty; - +#ifdef CONFIG_PM + device_set_wakeup_enable(tty->dev, 1); +#endif return 0; error_out3: @@ -1554,11 +1556,17 @@ static int serial_imx_suspend(struct platform_device *dev, pm_message_t state) struct imx_port *sport = platform_get_drvdata(dev); unsigned int val; - /* Enable i.MX UART wakeup */ - val = readl(sport->port.membase + UCR3); - val |= UCR3_AWAKEN; - writel(val, sport->port.membase + UCR3); - + if (device_may_wakeup(&dev->dev)) { + enable_irq_wake(sport->rxirq); +#ifdef CONFIG_PM + if (sport->port.line == 0) { + /* enable awake for MX6 */ + val = readl(sport->port.membase + UCR3); + val |= UCR3_AWAKEN; + writel(val, sport->port.membase + UCR3); + } +#endif + } if (sport) uart_suspend_port(&imx_reg, &sport->port); @@ -1573,12 +1581,17 @@ static int serial_imx_resume(struct platform_device *dev) if (sport) uart_resume_port(&imx_reg, &sport->port); - /* Disable i.MX UART wakeup */ - val = readl(sport->port.membase + UCR3); - val &= ~UCR3_AWAKEN; - writel(val, sport->port.membase + UCR3); - -return 0; + if (device_may_wakeup(&dev->dev)) { +#ifdef CONFIG_PM + if (sport->port.line == 0) { + val = readl(sport->port.membase + UCR3); + val &= ~UCR3_AWAKEN; + writel(val, sport->port.membase + UCR3); + } +#endif + disable_irq_wake(sport->rxirq); + } + return 0; } static int serial_imx_probe(struct platform_device *pdev) @@ -1657,6 +1670,9 @@ static int serial_imx_probe(struct platform_device *pdev) goto deinit; platform_set_drvdata(pdev, &sport->port); +#ifdef CONFIG_PM + device_init_wakeup(&pdev->dev, 1); +#endif return 0; deinit: if (pdata && pdata->exit) |