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serial: UniPhier: move LCR register setting to probe function

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We do not have to set the LCR register every time we change the
baud-rate.  We just need to set it up once in the probe function.

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
This commit is contained in:
Masahiro Yamada 2015-02-27 02:26:47 +09:00
parent d0c47b3ef7
commit 099cf77c15
1 changed files with 11 additions and 9 deletions
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20
drivers/serial/serial_uniphier.c
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@ -45,12 +45,6 @@ static int uniphier_serial_setbrg(struct udevice *dev, int baudrate)
struct uniphier_serial __iomem *port = uniphier_serial_port(dev);
const unsigned int mode_x_div = 16;
unsigned int divisor;
u32 tmp;
tmp = readl(&port->lcr_mcr);
tmp &= ~LCR_MASK;
tmp |= UART_LCR_WLEN8 << LCR_SHIFT;
writel(tmp, &port->lcr_mcr);
divisor = DIV_ROUND_CLOSEST(plat->uartclk, mode_x_div * baudrate);
@ -93,14 +87,22 @@ static int uniphier_serial_pending(struct udevice *dev, bool input)
static int uniphier_serial_probe(struct udevice *dev)
{
u32 tmp;
struct uniphier_serial_private_data *priv = dev_get_priv(dev);
struct uniphier_serial_platform_data *plat = dev_get_platdata(dev);
struct uniphier_serial __iomem *port;
priv->membase = map_sysmem(plat->base, sizeof(struct uniphier_serial));
if (!priv->membase)
port = map_sysmem(plat->base, sizeof(struct uniphier_serial));
if (!port)
return -ENOMEM;
priv->membase = port;
tmp = readl(&port->lcr_mcr);
tmp &= ~LCR_MASK;
tmp |= UART_LCR_WLEN8 << LCR_SHIFT;
writel(tmp, &port->lcr_mcr);
return 0;
}