diff options
Diffstat (limited to 'include/serial/imx-uart.h')
| -rw-r--r-- | include/serial/imx-uart.h | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/include/serial/imx-uart.h b/include/serial/imx-uart.h index 7275e6ac38..d0e5bcc2b8 100644 --- a/include/serial/imx-uart.h +++ b/include/serial/imx-uart.h @@ -125,4 +125,44 @@ static inline int refclock_to_ubmr(int clock_hz) return clock_hz / 1600 - 1; } +static inline void imx_uart_setup(void __iomem *uartbase, + unsigned int refclock) +{ + writel(0x00000000, uartbase + UCR1); + + writel(UCR2_IRTS | UCR2_WS | UCR2_TXEN | UCR2_RXEN | UCR2_SRST, + uartbase + UCR2); + writel(UCR3_DSR | UCR3_DCD | UCR3_RI | UCR3_ADNIMP | UCR3_RXDMUXSEL, + uartbase + UCR3); + writel((0b10 << UFCR_TXTL_SHF) | UFCR_RFDIV1 | (1 << UFCR_RXTL_SHF), + uartbase + UFCR); + + writel(baudrate_to_ubir(CONFIG_BAUDRATE), + uartbase + UBIR); + writel(refclock_to_ubmr(refclock), + uartbase + UBMR); + + writel(UCR1_UARTEN, uartbase + UCR1); +} + +static inline void imx51_uart_setup(void __iomem *uartbase) +{ + imx_uart_setup(uartbase, 54000000); +} + +static inline void imx6_uart_setup(void __iomem *uartbase) +{ + imx_uart_setup(uartbase, 80000000); +} + +static inline void imx_uart_putc(void *base, int c) +{ + if (!(readl(base + UCR1) & UCR1_UARTEN)) + return; + + while (!(readl(base + USR2) & USR2_TXDC)); + + writel(c, base + URTX0); +} + #endif /* __IMX_UART_H__ */ |