diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/serial/serial_s5p.c | 36 |
1 files changed, 24 insertions, 12 deletions
diff --git a/drivers/serial/serial_s5p.c b/drivers/serial/serial_s5p.c index 8469afdaae..7abec53f80 100644 --- a/drivers/serial/serial_s5p.c +++ b/drivers/serial/serial_s5p.c @@ -14,8 +14,8 @@ #include <fdtdec.h> #include <linux/compiler.h> #include <asm/io.h> -#include <asm/arch/uart.h> #include <asm/arch/clk.h> +#include <asm/arch/uart.h> #include <serial.h> DECLARE_GLOBAL_DATA_PTR; @@ -59,11 +59,20 @@ static const int udivslot[] = { 0xffdf, }; -int s5p_serial_setbrg(struct udevice *dev, int baudrate) +static void __maybe_unused s5p_serial_init(struct s5p_uart *uart) +{ + /* enable FIFOs, auto clear Rx FIFO */ + writel(0x3, &uart->ufcon); + writel(0, &uart->umcon); + /* 8N1 */ + writel(0x3, &uart->ulcon); + /* No interrupts, no DMA, pure polling */ + writel(0x245, &uart->ucon); +} + +static void __maybe_unused s5p_serial_baud(struct s5p_uart *uart, uint uclk, + int baudrate) { - struct s5p_serial_platdata *plat = dev->platdata; - struct s5p_uart *const uart = plat->reg; - u32 uclk = get_uart_clk(plat->port_id); u32 val; val = uclk / baudrate; @@ -74,6 +83,15 @@ int s5p_serial_setbrg(struct udevice *dev, int baudrate) writew(udivslot[val % 16], &uart->rest.slot); else writeb(val % 16, &uart->rest.value); +} + +int s5p_serial_setbrg(struct udevice *dev, int baudrate) +{ + struct s5p_serial_platdata *plat = dev->platdata; + struct s5p_uart *const uart = plat->reg; + u32 uclk = get_uart_clk(plat->port_id); + + s5p_serial_baud(uart, uclk, baudrate); return 0; } @@ -83,13 +101,7 @@ static int s5p_serial_probe(struct udevice *dev) struct s5p_serial_platdata *plat = dev->platdata; struct s5p_uart *const uart = plat->reg; - /* enable FIFOs, auto clear Rx FIFO */ - writel(0x3, &uart->ufcon); - writel(0, &uart->umcon); - /* 8N1 */ - writel(0x3, &uart->ulcon); - /* No interrupts, no DMA, pure polling */ - writel(0x245, &uart->ucon); + s5p_serial_init(uart); return 0; } |