diff options
Diffstat (limited to 'drivers/tty')
-rw-r--r-- | drivers/tty/serial/samsung.c | 43 | ||||
-rw-r--r-- | drivers/tty/serial/samsung.h | 4 |
2 files changed, 41 insertions, 6 deletions
diff --git a/drivers/tty/serial/samsung.c b/drivers/tty/serial/samsung.c index 9cd706df3b33..30ec44260b24 100644 --- a/drivers/tty/serial/samsung.c +++ b/drivers/tty/serial/samsung.c @@ -59,6 +59,41 @@ #define S3C24XX_SERIAL_MAJOR 204 #define S3C24XX_SERIAL_MINOR 64 +#ifndef CONFIG_CPU_BIG_ENDIAN /* little endian */ +static inline void __hw_set_bit(int nr, volatile unsigned long *addr) +{ + __set_bit(nr, addr); +} + +static inline void __hw_clear_bit(int nr, volatile unsigned long *addr) +{ + __clear_bit(nr, addr); +} +#else +static inline void __hw_set_bit(int nr, volatile unsigned long *addr) +{ + unsigned long mask = BIT_MASK(nr); + unsigned long *p = ((unsigned long *)addr) + BIT_WORD(nr); + unsigned long val = le32_to_cpu(*p); + + val |= mask; + + *p = cpu_to_le32(val); +} + +static inline void __hw_clear_bit(int nr, volatile unsigned long *addr) +{ + unsigned long mask = BIT_MASK(nr); + unsigned long *p = ((unsigned long *)addr) + BIT_WORD(nr); + + unsigned long val = le32_to_cpu(*p); + + val &= ~mask; + + *p = cpu_to_le32(val); +} +#endif + /* macros to change one thing to another */ #define tx_enabled(port) ((port)->unused[0]) @@ -138,7 +173,7 @@ static void s3c24xx_serial_stop_tx(struct uart_port *port) if (tx_enabled(port)) { if (s3c24xx_serial_has_interrupt_mask(port)) - __set_bit(S3C64XX_UINTM_TXD, + __hw_set_bit(S3C64XX_UINTM_TXD, portaddrl(port, S3C64XX_UINTM)); else disable_irq_nosync(ourport->tx_irq); @@ -157,7 +192,7 @@ static void s3c24xx_serial_start_tx(struct uart_port *port) s3c24xx_serial_rx_disable(port); if (s3c24xx_serial_has_interrupt_mask(port)) - __clear_bit(S3C64XX_UINTM_TXD, + __hw_clear_bit(S3C64XX_UINTM_TXD, portaddrl(port, S3C64XX_UINTM)); else enable_irq(ourport->tx_irq); @@ -172,7 +207,7 @@ static void s3c24xx_serial_stop_rx(struct uart_port *port) if (rx_enabled(port)) { dbg("s3c24xx_serial_stop_rx: port=%p\n", port); if (s3c24xx_serial_has_interrupt_mask(port)) - __set_bit(S3C64XX_UINTM_RXD, + __hw_set_bit(S3C64XX_UINTM_RXD, portaddrl(port, S3C64XX_UINTM)); else disable_irq_nosync(ourport->rx_irq); @@ -533,7 +568,7 @@ static int s3c64xx_serial_startup(struct uart_port *port) ourport->tx_claimed = 1; /* Enable Rx Interrupt */ - __clear_bit(S3C64XX_UINTM_RXD, portaddrl(port, S3C64XX_UINTM)); + __hw_clear_bit(S3C64XX_UINTM_RXD, portaddrl(port, S3C64XX_UINTM)); dbg("s3c64xx_serial_startup ok\n"); return ret; } diff --git a/drivers/tty/serial/samsung.h b/drivers/tty/serial/samsung.h index 8827e5424cef..ceb11f73c777 100644 --- a/drivers/tty/serial/samsung.h +++ b/drivers/tty/serial/samsung.h @@ -72,10 +72,10 @@ struct s3c24xx_uart_port { ((unsigned long *)(unsigned long)((port)->membase + (reg))) #define rd_regb(port, reg) (__raw_readb(portaddr(port, reg))) -#define rd_regl(port, reg) (__raw_readl(portaddr(port, reg))) +#define rd_regl(port, reg) (readl_relaxed(portaddr(port, reg))) #define wr_regb(port, reg, val) __raw_writeb(val, portaddr(port, reg)) -#define wr_regl(port, reg, val) __raw_writel(val, portaddr(port, reg)) +#define wr_regl(port, reg, val) writel_relaxed(val, portaddr(port, reg)) #if defined(CONFIG_SERIAL_SAMSUNG_DEBUG) && \ defined(CONFIG_DEBUG_LL) && \ |