diff options
author | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2010-06-22 11:32:04 -0700 |
---|---|---|
committer | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2010-06-22 11:32:04 -0700 |
commit | 0e789314f8c0b50bd19bf08dc5624b9604d60183 (patch) | |
tree | 64b6b9655e944284937f5eeff643f0754f35d0af /drivers/serial/msm_serial.h | |
parent | f5dec51172b81db226a23f309bc737ad021af35b (diff) | |
parent | 7e27d6e778cd87b6f2415515d7127eba53fe5d02 (diff) | |
download | blackbird-obmc-linux-0e789314f8c0b50bd19bf08dc5624b9604d60183.tar.gz blackbird-obmc-linux-0e789314f8c0b50bd19bf08dc5624b9604d60183.zip |
Merge commit 'v2.6.35-rc3' into for-linus
Diffstat (limited to 'drivers/serial/msm_serial.h')
-rw-r--r-- | drivers/serial/msm_serial.h | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/drivers/serial/msm_serial.h b/drivers/serial/msm_serial.h index 689f1fa0e84e..f6ca9ca79e98 100644 --- a/drivers/serial/msm_serial.h +++ b/drivers/serial/msm_serial.h @@ -114,4 +114,60 @@ #define UART_MISR 0x0010 #define UART_ISR 0x0014 +#define UART_TO_MSM(uart_port) ((struct msm_port *) uart_port) + +static inline +void msm_write(struct uart_port *port, unsigned int val, unsigned int off) +{ + __raw_writel(val, port->membase + off); +} + +static inline +unsigned int msm_read(struct uart_port *port, unsigned int off) +{ + return __raw_readl(port->membase + off); +} + +/* + * Setup the MND registers to use the TCXO clock. + */ +static inline void msm_serial_set_mnd_regs_tcxo(struct uart_port *port) +{ + msm_write(port, 0x06, UART_MREG); + msm_write(port, 0xF1, UART_NREG); + msm_write(port, 0x0F, UART_DREG); + msm_write(port, 0x1A, UART_MNDREG); +} + +/* + * Setup the MND registers to use the TCXO clock divided by 4. + */ +static inline void msm_serial_set_mnd_regs_tcxoby4(struct uart_port *port) +{ + msm_write(port, 0x18, UART_MREG); + msm_write(port, 0xF6, UART_NREG); + msm_write(port, 0x0F, UART_DREG); + msm_write(port, 0x0A, UART_MNDREG); +} + +static inline +void msm_serial_set_mnd_regs_from_uartclk(struct uart_port *port) +{ + if (port->uartclk == 19200000) + msm_serial_set_mnd_regs_tcxo(port); + else + msm_serial_set_mnd_regs_tcxoby4(port); +} + +/* + * TROUT has a specific defect that makes it report it's uartclk + * as 19.2Mhz (TCXO) when it's actually 4.8Mhz (TCXO/4). This special + * cases TROUT to use the right clock. + */ +#ifdef CONFIG_MACH_TROUT +#define msm_serial_set_mnd_regs msm_serial_set_mnd_regs_tcxoby4 +#else +#define msm_serial_set_mnd_regs msm_serial_set_mnd_regs_from_uartclk +#endif + #endif /* __DRIVERS_SERIAL_MSM_SERIAL_H */ |