diff options
Diffstat (limited to 'arch/arm/include/asm/arch-tegra2/uart-spi-switch.h')
-rw-r--r-- | arch/arm/include/asm/arch-tegra2/uart-spi-switch.h | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/arch/arm/include/asm/arch-tegra2/uart-spi-switch.h b/arch/arm/include/asm/arch-tegra2/uart-spi-switch.h new file mode 100644 index 0000000..e4503b1 --- /dev/null +++ b/arch/arm/include/asm/arch-tegra2/uart-spi-switch.h @@ -0,0 +1,46 @@ +/* + * Copyright (c) 2011 The Chromium OS Authors. + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ + +#ifndef _UART_SPI_SWITCH_H +#define _UART_SPI_SWITCH_H + +#if defined(CONFIG_SPI_UART_SWITCH) +/* + * Signal that we are about to use the UART. This unfortunate hack is + * required by Seaboard, which cannot use its console and SPI at the same + * time! If the board file provides this, the board config will declare it. + * Let this be a lesson for others. + */ +void pinmux_select_uart(NS16550_t regs); + +/* + * Signal that we are about the use the SPI bus. + */ +void pinmux_select_spi(void); + +#else /* not CONFIG_SPI_UART_SWITCH */ + +static inline void pinmux_select_uart(NS16550_t regs) {} +static inline void pinmux_select_spi(void) {} + +#endif + +#endif |