diff options
| author | Mike Frysinger <vapier@gentoo.org> | 2010-12-17 16:23:59 -0500 |
|---|---|---|
| committer | Mike Frysinger <vapier@gentoo.org> | 2011-04-08 00:44:26 -0400 |
| commit | baaa4f9ce288f7a39adf4c9a4d7f2c2ad7a1cfc8 (patch) | |
| tree | 93488b633a0407392770d73b19b0a6de6d36e92e /arch/blackfin | |
| parent | dbb6d366e30e1292f51bb3265f80667a04fc0825 (diff) | |
| download | u-boot-imx-baaa4f9ce288f7a39adf4c9a4d7f2c2ad7a1cfc8.zip u-boot-imx-baaa4f9ce288f7a39adf4c9a4d7f2c2ad7a1cfc8.tar.gz u-boot-imx-baaa4f9ce288f7a39adf4c9a4d7f2c2ad7a1cfc8.tar.bz2 | |
Blackfin: serial: clean up muxing a bit
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Diffstat (limited to 'arch/blackfin')
| -rw-r--r-- | arch/blackfin/cpu/serial.h | 51 |
1 files changed, 20 insertions, 31 deletions
diff --git a/arch/blackfin/cpu/serial.h b/arch/blackfin/cpu/serial.h index f9e311f..b0cf09a 100644 --- a/arch/blackfin/cpu/serial.h +++ b/arch/blackfin/cpu/serial.h @@ -74,23 +74,19 @@ struct bfin_mmr_serial { }; #undef __BFP -#ifndef UART_LSR -# if (CONFIG_UART_CONSOLE == 3) -# define UART_BASE UART3_DLL -# elif (CONFIG_UART_CONSOLE == 2) -# define UART_BASE UART2_DLL -# elif (CONFIG_UART_CONSOLE == 1) -# define UART_BASE UART1_DLL -# elif (CONFIG_UART_CONSOLE == 0) -# define UART_BASE UART0_DLL -# endif +#define __PASTE_UART(num, pfx, sfx) pfx##num##_##sfx +#define _PASTE_UART(num, pfx, sfx) __PASTE_UART(num, pfx, sfx) +#define MMR_UART(mmr) _PASTE_UART(CONFIG_UART_CONSOLE, UART, DLL) +#define P_UART(pin) _PASTE_UART(CONFIG_UART_CONSOLE, P_UART, pin) + +#ifndef UART_DLL +# define UART_DLL MMR_UART(DLL) #else # if CONFIG_UART_CONSOLE != 0 # error CONFIG_UART_CONSOLE must be 0 on parts with only one UART # endif -# define UART_BASE UART_DLL #endif -#define pUART ((volatile struct bfin_mmr_serial *)UART_BASE) +#define pUART ((volatile struct bfin_mmr_serial *)UART_DLL) #ifdef __ADSPBF54x__ # define ACCESS_LATCH() @@ -106,18 +102,7 @@ __attribute__((always_inline)) static inline void serial_do_portmux(void) { if (!BFIN_DEBUG_EARLY_SERIAL) { - const unsigned short pins[] = { -#if CONFIG_UART_CONSOLE == 0 - P_UART0_TX, P_UART0_RX, -#elif CONFIG_UART_CONSOLE == 1 - P_UART1_TX, P_UART1_RX, -#elif CONFIG_UART_CONSOLE == 2 - P_UART2_TX, P_UART2_RX, -#elif CONFIG_UART_CONSOLE == 3 - P_UART3_TX, P_UART3_RX, -#endif - 0, - }; + const unsigned short pins[] = { P_UART(RX), P_UART(TX), 0, }; peripheral_request_list(pins, "bfin-uart"); return; } @@ -141,13 +126,11 @@ static inline void serial_do_portmux(void) } SSYNC(); #elif defined(__ADSPBF537__) || defined(__ADSPBF536__) || defined(__ADSPBF534__) -# define DO_MUX(func, tx, rx) \ - bfin_write_PORT_MUX(bfin_read_PORT_MUX() & ~(func)); \ - bfin_write_PORTF_FER(bfin_read_PORTF_FER() | PF##tx | PF##rx); - switch (CONFIG_UART_CONSOLE) { - case 0: DO_MUX(PFDE, 0, 1); break; - case 1: DO_MUX(PFTE, 2, 3); break; - } + const uint16_t func[] = { PFDE, PFTE, }; + bfin_write_PORT_MUX(bfin_read_PORT_MUX() & ~func[CONFIG_UART_CONSOLE]); + bfin_write_PORTF_FER(bfin_read_PORTF_FER() | + (1 << P_IDENT(P_UART(RX))) | + (1 << P_IDENT(P_UART(TX)))); SSYNC(); #elif defined(__ADSPBF54x__) # define DO_MUX(port, tx, rx) \ @@ -160,6 +143,12 @@ static inline void serial_do_portmux(void) case 3: DO_MUX(B, 6, 7); break; /* Port B; PB6 and PB7 */ } SSYNC(); +#elif defined(__ADSPBF561__) + /* UART pins could be GPIO, but they aren't pin muxed. */ +#else +# if (P_UART(RX) & P_DEFINED) || (P_UART(TX) & P_DEFINED) +# error "missing portmux logic for UART" +# endif #endif } |