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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>
This commit is contained in:
Hector Martin 2021-03-05 06:38:54 +09:00 committed by Greg Kroah-Hartman
parent 196ebe5c00
commit 19d48787e3
1 changed files with 4 additions and 7 deletions
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11
drivers/tty/serial/samsung_tty.c
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@ -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,