From 45d97511a9c43161652d9101c0ef7fa212121154 Mon Sep 17 00:00:00 2001 From: Jagan Teki Date: Tue, 6 Jun 2017 05:31:49 +0000 Subject: [PATCH] serial: mxc: Move common baud gen into _mxc_serial_setbrg Move the common baud generation code into _mxc_serial_setbrg so-that dm and non-dm can call this func. Signed-off-by: Jagan Teki Reviewed-by: Simon Glass --- drivers/serial/serial_mxc.c | 50 ++++++++++++++++++------------------- 1 file changed, 24 insertions(+), 26 deletions(-) diff --git a/drivers/serial/serial_mxc.c b/drivers/serial/serial_mxc.c index 7a51e13960..87f0281f3a 100644 --- a/drivers/serial/serial_mxc.c +++ b/drivers/serial/serial_mxc.c @@ -108,6 +108,8 @@ #define UTS_TXFULL (1<<4) /* TxFIFO full */ #define UTS_RXFULL (1<<3) /* RxFIFO full */ #define UTS_SOFTRS (1<<0) /* Software reset */ +#define TXTL 2 /* reset default */ +#define RXTL 1 /* reset default */ DECLARE_GLOBAL_DATA_PTR; @@ -152,6 +154,26 @@ static void _mxc_serial_init(struct mxc_uart *base) writel(0, &base->ts); } +static void _mxc_serial_setbrg(struct mxc_uart *base, unsigned long clk, + unsigned long baudrate, bool use_dte) +{ + u32 tmp; + + tmp = RFDIV << UFCR_RFDIV_SHF; + if (use_dte) + tmp |= UFCR_DCEDTE; + else + tmp |= (TXTL << UFCR_TXTL_SHF) | (RXTL << UFCR_RXTL_SHF); + writel(tmp, &base->fcr); + + writel(0xf, &base->bir); + writel(clk / (2 * baudrate), &base->bmr); + + writel(UCR2_WS | UCR2_IRTS | UCR2_RXEN | UCR2_TXEN | UCR2_SRST, + &base->cr2); + writel(UCR1_UARTEN, &base->cr1); +} + #ifndef CONFIG_DM_SERIAL #ifndef CONFIG_MXC_UART_BASE @@ -160,9 +182,6 @@ static void _mxc_serial_init(struct mxc_uart *base) #define mxc_base ((struct mxc_uart *)CONFIG_MXC_UART_BASE) -#define TXTL 2 /* reset default */ -#define RXTL 1 /* reset default */ - static void mxc_serial_setbrg(void) { u32 clk = imx_get_uartclk(); @@ -170,16 +189,7 @@ static void mxc_serial_setbrg(void) if (!gd->baudrate) gd->baudrate = CONFIG_BAUDRATE; - writel(((RFDIV << UFCR_RFDIV_SHF) | - (TXTL << UFCR_TXTL_SHF) | - (RXTL << UFCR_RXTL_SHF)), - &mxc_base->fcr); - writel(0xf, &mxc_base->bir); - writel(clk / (2 * gd->baudrate), &mxc_base->bmr); - - writel(UCR2_WS | UCR2_IRTS | UCR2_RXEN | UCR2_TXEN | UCR2_SRST, - &mxc_base->cr2); - writel(UCR1_UARTEN, &mxc_base->cr1); + _mxc_serial_setbrg(mxc_base, clk, gd->baudrate, false); } static int mxc_serial_getc(void) @@ -254,21 +264,9 @@ __weak struct serial_device *default_serial_console(void) int mxc_serial_setbrg(struct udevice *dev, int baudrate) { struct mxc_serial_platdata *plat = dev->platdata; - struct mxc_uart *const uart = plat->reg; u32 clk = imx_get_uartclk(); - u32 tmp; - tmp = RFDIV << UFCR_RFDIV_SHF; - if (plat->use_dte) - tmp |= UFCR_DCEDTE; - writel(tmp, &uart->fcr); - - writel(0xf, &uart->bir); - writel(clk / (2 * baudrate), &uart->bmr); - - writel(UCR2_WS | UCR2_IRTS | UCR2_RXEN | UCR2_TXEN | UCR2_SRST, - &uart->cr2); - writel(UCR1_UARTEN, &uart->cr1); + _mxc_serial_setbrg(plat->reg, clk, baudrate, plat->use_dte); return 0; } -- 2.25.1