提交 f52ede2a 编写于 作者: A Alexander Shiyan 提交者: Greg Kroah-Hartman

serial: clps711x: Disable "break"-state before port startup

Signed-off-by: NAlexander Shiyan <shc_work@mail.ru>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
上级 135cc790
......@@ -231,7 +231,6 @@ static void clps711xuart_break_ctl(struct uart_port *port, int break_state)
static int clps711xuart_startup(struct uart_port *port)
{
struct clps711x_port *s = dev_get_drvdata(port->dev);
unsigned int syscon;
int ret;
s->tx_enabled[port->line] = 1;
......@@ -248,37 +247,23 @@ static int clps711xuart_startup(struct uart_port *port)
return ret;
}
/*
* enable the port
*/
syscon = clps_readl(SYSCON(port));
syscon |= SYSCON_UARTEN;
clps_writel(syscon, SYSCON(port));
/* Disable break */
clps_writel(clps_readl(UBRLCR(port)) & ~UBRLCR_BREAK, UBRLCR(port));
/* Enable the port */
clps_writel(clps_readl(SYSCON(port)) | SYSCON_UARTEN, SYSCON(port));
return 0;
}
static void clps711xuart_shutdown(struct uart_port *port)
{
unsigned int ubrlcr, syscon;
/* Free the interrupts */
devm_free_irq(port->dev, TX_IRQ(port), port);
devm_free_irq(port->dev, RX_IRQ(port), port);
/*
* disable the port
*/
syscon = clps_readl(SYSCON(port));
syscon &= ~SYSCON_UARTEN;
clps_writel(syscon, SYSCON(port));
/*
* disable break condition and fifos
*/
ubrlcr = clps_readl(UBRLCR(port));
ubrlcr &= ~(UBRLCR_FIFOEN | UBRLCR_BREAK);
clps_writel(ubrlcr, UBRLCR(port));
/* Disable the port */
clps_writel(clps_readl(SYSCON(port)) & ~SYSCON_UARTEN, SYSCON(port));
}
static void
......
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