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Diffstat (limited to 'drivers/atmel_usart.c')
-rw-r--r--drivers/atmel_usart.c48
1 files changed, 30 insertions, 18 deletions
diff --git a/drivers/atmel_usart.c b/drivers/atmel_usart.c
index 41c3768..f35b997 100644
--- a/drivers/atmel_usart.c
+++ b/drivers/atmel_usart.c
@@ -19,7 +19,22 @@
#ifdef CONFIG_ATMEL_USART
#include <asm/io.h>
-#include <asm/arch/platform.h>
+#include <asm/arch/clk.h>
+#include <asm/arch/memory-map.h>
+
+#if defined(CONFIG_USART0)
+# define USART_ID 0
+# define USART_BASE USART0_BASE
+#elif defined(CONFIG_USART1)
+# define USART_ID 1
+# define USART_BASE USART1_BASE
+#elif defined(CONFIG_USART2)
+# define USART_ID 2
+# define USART_BASE USART2_BASE
+#elif defined(CONFIG_USART3)
+# define USART_ID 3
+# define USART_BASE USART3_BASE
+#endif
#include "atmel_usart.h"
@@ -35,26 +50,23 @@ void serial_setbrg(void)
* Baud Rate = --------------
* 16 * CD
*/
- usart_hz = pm_get_clock_freq(gd->console_uart->resource[0].u.clock.id);
+ usart_hz = get_usart_clk_rate(USART_ID);
divisor = (usart_hz / 16 + gd->baudrate / 2) / gd->baudrate;
- usart3_writel(gd->console_uart, BRGR, USART3_BF(CD, divisor));
+ usart3_writel(BRGR, USART3_BF(CD, divisor));
}
int serial_init(void)
{
- usart3_writel(gd->console_uart, CR,
- USART3_BIT(RSTRX) | USART3_BIT(RSTTX));
+ usart3_writel(CR, USART3_BIT(RSTRX) | USART3_BIT(RSTTX));
serial_setbrg();
- usart3_writel(gd->console_uart, CR,
- USART3_BIT(RXEN) | USART3_BIT(TXEN));
- usart3_writel(gd->console_uart, MR,
- USART3_BF(USART_MODE, USART3_USART_MODE_NORMAL)
- | USART3_BF(USCLKS, USART3_USCLKS_MCK)
- | USART3_BF(CHRL, USART3_CHRL_8)
- | USART3_BF(PAR, USART3_PAR_NONE)
- | USART3_BF(NBSTOP, USART3_NBSTOP_1));
+ usart3_writel(CR, USART3_BIT(RXEN) | USART3_BIT(TXEN));
+ usart3_writel(MR, (USART3_BF(USART_MODE, USART3_USART_MODE_NORMAL)
+ | USART3_BF(USCLKS, USART3_USCLKS_MCK)
+ | USART3_BF(CHRL, USART3_CHRL_8)
+ | USART3_BF(PAR, USART3_PAR_NONE)
+ | USART3_BF(NBSTOP, USART3_NBSTOP_1)));
return 0;
}
@@ -64,8 +76,8 @@ void serial_putc(char c)
if (c == '\n')
serial_putc('\r');
- while (!(usart3_readl(gd->console_uart, CSR) & USART3_BIT(TXRDY))) ;
- usart3_writel(gd->console_uart, THR, c);
+ while (!(usart3_readl(CSR) & USART3_BIT(TXRDY))) ;
+ usart3_writel(THR, c);
}
void serial_puts(const char *s)
@@ -76,13 +88,13 @@ void serial_puts(const char *s)
int serial_getc(void)
{
- while (!(usart3_readl(gd->console_uart, CSR) & USART3_BIT(RXRDY))) ;
- return usart3_readl(gd->console_uart, RHR);
+ while (!(usart3_readl(CSR) & USART3_BIT(RXRDY))) ;
+ return usart3_readl(RHR);
}
int serial_tstc(void)
{
- return (usart3_readl(gd->console_uart, CSR) & USART3_BIT(RXRDY)) != 0;
+ return (usart3_readl(CSR) & USART3_BIT(RXRDY)) != 0;
}
#endif /* CONFIG_ATMEL_USART */