tty: serial: samsung_tty: Add ucon_mask parameter

This simplifies the code by removing the only distinction between the
S3C2410 and S3C2440 codepaths.

Signed-off-by: Hector Martin <marcan@marcan.st>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Tested-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Link: https://lore.kernel.org/r/20210304213902.83903-20-marcan@marcan.st
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/tty/serial/samsung_tty.c b/drivers/tty/serial/samsung_tty.c
index 8ae3e03..30adb15 100644 (file)
--- a/drivers/tty/serial/samsung_tty.c
+++ b/drivers/tty/serial/samsung_tty.c
@@ -70,6 +70,7 @@ struct s3c24xx_uart_info {
        unsigned long           num_clks;
        unsigned long           clksel_mask;
        unsigned long           clksel_shift;
+       unsigned long           ucon_mask;
 
        /* uart port features */
 
@@ -1706,14 +1707,9 @@ static void s3c24xx_serial_resetport(struct uart_port *port,
 {
        struct s3c24xx_uart_info *info = s3c24xx_port_to_info(port);
        unsigned long ucon = rd_regl(port, S3C2410_UCON);
-       unsigned int ucon_mask;
 
-       ucon_mask = info->clksel_mask;
-       if (info->type == PORT_S3C2440)
-               ucon_mask |= S3C2440_UCON0_DIVMASK;
-
-       ucon &= ucon_mask;
-       wr_regl(port, S3C2410_UCON,  ucon | cfg->ucon);
+       ucon &= (info->clksel_mask | info->ucon_mask);
+       wr_regl(port, S3C2410_UCON, ucon | cfg->ucon);
 
        /* reset both fifos */
        wr_regl(port, S3C2410_UFCON, cfg->ufcon | S3C2410_UFCON_RESETBOTH);
@@ -2449,6 +2445,7 @@ static struct s3c24xx_serial_drv_data s3c2440_serial_drv_data = {
                .num_clks       = 4,
                .clksel_mask    = S3C2412_UCON_CLKMASK,
                .clksel_shift   = S3C2412_UCON_CLKSHIFT,
+               .ucon_mask      = S3C2440_UCON0_DIVMASK,
        },
        .def_cfg = &(struct s3c2410_uartcfg) {
                .ucon           = S3C2410_UCON_DEFAULT,