| Albin Tonnerre | 9453967 | 2009-08-24 18:03:26 +0200 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2009 |
| 3 | * Albin Tonnerre, Free Electrons <albin.tonnerre@free-electrons.com> |
| 4 | * |
| 5 | * See file CREDITS for list of people who contributed to this |
| 6 | * project. |
| 7 | * |
| 8 | * This program is free software; you can redistribute it and/or |
| 9 | * modify it under the terms of the GNU General Public License as |
| 10 | * published by the Free Software Foundation; either version 2 of |
| 11 | * the License, or (at your option) any later version. |
| 12 | * |
| 13 | * This program is distributed in the hope that it will be useful, |
| 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 16 | * GNU General Public License for more details. |
| 17 | * |
| 18 | * You should have received a copy of the GNU General Public License |
| 19 | * along with this program; if not, write to the Free Software |
| 20 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, |
| 21 | * MA 02111-1307 USA |
| 22 | */ |
| 23 | |
| 24 | #include <common.h> |
| 25 | #include <asm/arch/hardware.h> |
| 26 | #include <asm/arch/at91_spi.h> |
| 27 | #include <asm/arch/gpio.h> |
| 28 | #include <spi.h> |
| 29 | |
| 30 | #define SBC_A9260_CS0_PIN AT91_PIN_PA3 |
| 31 | #define SBC_A9260_CS1_PIN AT91_PIN_PC11 |
| 32 | |
| 33 | int spi_cs_is_valid(unsigned int bus, unsigned int cs) |
| 34 | { |
| 35 | return bus == 0 && (cs == 1 || cs == 0); |
| 36 | } |
| 37 | |
| 38 | void spi_cs_activate(struct spi_slave *slave) |
| 39 | { |
| 40 | if(slave->cs == 0) |
| 41 | at91_set_gpio_value(SBC_A9260_CS0_PIN, 0); |
| 42 | else if(slave->cs == 1) |
| 43 | at91_set_gpio_value(SBC_A9260_CS1_PIN, 0); |
| 44 | } |
| 45 | |
| 46 | void spi_cs_deactivate(struct spi_slave *slave) |
| 47 | { |
| 48 | if(slave->cs == 0) |
| 49 | at91_set_gpio_value(SBC_A9260_CS0_PIN, 1); |
| 50 | else if(slave->cs == 1) |
| 51 | at91_set_gpio_value(SBC_A9260_CS1_PIN, 1); |
| 52 | } |
| 53 | |
| 54 | void spi_init_f(void) |
| 55 | { |
| 56 | /* everything done in board_init */ |
| 57 | } |