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serial: fsl-lpuart: add lpuart32 power management support

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This adds 32-bit register lpuart32 power management support,
this also updates the 8-bit register lpuart resume function.

Signed-off-by: Jingchang Lu <jingchang.lu@freescale.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Jingchang Lu 2014-10-24 17:20:49 +08:00 committed by Greg Kroah-Hartman
parent 5483c10e03
commit 08de1014ff
1 changed files with 14 additions and 0 deletions
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14
drivers/tty/serial/fsl_lpuart.c
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@ -1862,6 +1862,20 @@ static int lpuart_suspend(struct device *dev)
static int lpuart_resume(struct device *dev)
{
struct lpuart_port *sport = dev_get_drvdata(dev);
unsigned long temp;
if (sport->lpuart32) {
lpuart32_setup_watermark(sport);
temp = lpuart32_read(sport->port.membase + UARTCTRL);
temp |= (UARTCTRL_RIE | UARTCTRL_TIE | UARTCTRL_RE |
UARTCTRL_TE | UARTCTRL_ILIE);
lpuart32_write(temp, sport->port.membase + UARTCTRL);
} else {
lpuart_setup_watermark(sport);
temp = readb(sport->port.membase + UARTCR2);
temp |= (UARTCR2_RIE | UARTCR2_TIE | UARTCR2_RE | UARTCR2_TE);
writeb(temp, sport->port.membase + UARTCR2);
}
uart_resume_port(&lpuart_reg, &sport->port);