diff options
| author | Jongpill Lee <boyko.lee@samsung.com> | 2010-07-16 10:19:41 +0900 |
|---|---|---|
| committer | Kukjin Kim <kgene.kim@samsung.com> | 2010-08-05 18:32:41 +0900 |
| commit | 8b526ae4ddd7a62397d99856079b59eda5d09360 (patch) | |
| tree | 004b09ebdb47c96612d28b97fb7c7dd5907597cb | |
| parent | 9fe6206f400646a2322096b56c59891d530e8d51 (diff) | |
| download | talos-op-linux-8b526ae4ddd7a62397d99856079b59eda5d09360.tar.gz talos-op-linux-8b526ae4ddd7a62397d99856079b59eda5d09360.zip | |
ARM: SAMSUNG: serial: Add FRACVAL support for newer UART
Add support for the FRACVAL register on the newer UART blocks which provides
the same function as UDIVSLOT register but the FRACVAL is easier to implement.
To support UDIVSLOT register, UDIVSLOT table search is necessary though
supporting FRACVAL only needs the index value of UDIVSLOT table.
Signed-off-by: Jongpill Lee <boyko.lee@samsung.com>
Acked-by: Changhwan Youn <chaos.youn@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
| -rw-r--r-- | arch/arm/plat-samsung/include/plat/regs-serial.h | 2 | ||||
| -rw-r--r-- | drivers/serial/samsung.c | 9 |
2 files changed, 9 insertions, 2 deletions
diff --git a/arch/arm/plat-samsung/include/plat/regs-serial.h b/arch/arm/plat-samsung/include/plat/regs-serial.h index a6eba8496b24..788837e99cb3 100644 --- a/arch/arm/plat-samsung/include/plat/regs-serial.h +++ b/arch/arm/plat-samsung/include/plat/regs-serial.h @@ -259,6 +259,8 @@ struct s3c2410_uartcfg { unsigned short flags; upf_t uart_flags; /* default uart flags */ + unsigned int has_fracval; + unsigned long ucon; /* value of ucon for port */ unsigned long ulcon; /* value of ulcon for port */ unsigned long ufcon; /* value of ufcon for port */ diff --git a/drivers/serial/samsung.c b/drivers/serial/samsung.c index a9d6c5626a0a..b1156ba8ad14 100644 --- a/drivers/serial/samsung.c +++ b/drivers/serial/samsung.c @@ -705,8 +705,13 @@ static void s3c24xx_serial_set_termios(struct uart_port *port, if (ourport->info->has_divslot) { unsigned int div = ourport->baudclk_rate / baud; - udivslot = udivslot_table[div & 15]; - dbg("udivslot = %04x (div %d)\n", udivslot, div & 15); + if (cfg->has_fracval) { + udivslot = (div & 15); + dbg("fracval = %04x\n", udivslot); + } else { + udivslot = udivslot_table[div & 15]; + dbg("udivslot = %04x (div %d)\n", udivslot, div & 15); + } } switch (termios->c_cflag & CSIZE) { |
