diff options
Diffstat (limited to 'drivers/tty/serial/samsung.h')
| -rw-r--r-- | drivers/tty/serial/samsung.h | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/drivers/tty/serial/samsung.h b/drivers/tty/serial/samsung.h index 8f96b715a7b0..2ae4fcee1814 100644 --- a/drivers/tty/serial/samsung.h +++ b/drivers/tty/serial/samsung.h @@ -123,4 +123,32 @@ struct s3c24xx_uart_port { #define wr_regb(port, reg, val) writeb_relaxed(val, portaddr(port, reg)) #define wr_regl(port, reg, val) writel_relaxed(val, portaddr(port, reg)) +/* Byte-order aware bit setting/clearing functions. */ + +static inline void s3c24xx_set_bit(struct uart_port *port, int idx, + unsigned int reg) +{ + unsigned long flags; + u32 val; + + local_irq_save(flags); + val = rd_regl(port, reg); + val |= (1 << idx); + wr_regl(port, reg, val); + local_irq_restore(flags); +} + +static inline void s3c24xx_clear_bit(struct uart_port *port, int idx, + unsigned int reg) +{ + unsigned long flags; + u32 val; + + local_irq_save(flags); + val = rd_regl(port, reg); + val &= ~(1 << idx); + wr_regl(port, reg, val); + local_irq_restore(flags); +} + #endif |