diff options
Diffstat (limited to 'drivers/atmel_usart.c')
| -rw-r--r-- | drivers/atmel_usart.c | 48 |
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 */ |