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To enable CAN init, CONFIG_CAN has to be defined in the board config file and at91_can_hw_init() has to be called in the board specific code. CAN is available on AT91SAM9263 and AT91CAP9 SoC. Signed-off-by: Daniel Gorsulowski <Daniel.Gorsulowski@esd.eu>
192 lines
5.0 KiB
C
192 lines
5.0 KiB
C
/*
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* (C) Copyright 2007-2008
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* Stelian Pop <stelian.pop@leadtechdesign.com>
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* Lead Tech Design <www.leadtechdesign.com>
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*
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* (C) Copyright 2009
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* Daniel Gorsulowski <daniel.gorsulowski@esd.eu>
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* esd electronic system design gmbh <www.esd.eu>
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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#include <common.h>
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#include <asm/arch/at91_common.h>
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#include <asm/arch/at91_pmc.h>
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#include <asm/arch/gpio.h>
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#include <asm/arch/io.h>
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void at91_serial0_hw_init(void)
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{
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at91_set_A_periph(AT91_PIN_PA22, 1); /* TXD0 */
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at91_set_A_periph(AT91_PIN_PA23, 0); /* RXD0 */
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at91_sys_write(AT91_PMC_PCER, 1 << AT91CAP9_ID_US0);
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}
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void at91_serial1_hw_init(void)
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{
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at91_set_A_periph(AT91_PIN_PD0, 1); /* TXD1 */
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at91_set_A_periph(AT91_PIN_PD1, 0); /* RXD1 */
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at91_sys_write(AT91_PMC_PCER, 1 << AT91CAP9_ID_US1);
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}
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void at91_serial2_hw_init(void)
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{
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at91_set_A_periph(AT91_PIN_PD2, 1); /* TXD2 */
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at91_set_A_periph(AT91_PIN_PD3, 0); /* RXD2 */
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at91_sys_write(AT91_PMC_PCER, 1 << AT91CAP9_ID_US2);
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}
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void at91_serial3_hw_init(void)
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{
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at91_set_A_periph(AT91_PIN_PC30, 0); /* DRXD */
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at91_set_A_periph(AT91_PIN_PC31, 1); /* DTXD */
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at91_sys_write(AT91_PMC_PCER, 1 << AT91_ID_SYS);
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}
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void at91_serial_hw_init(void)
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{
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#ifdef CONFIG_USART0
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at91_serial0_hw_init();
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#endif
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#ifdef CONFIG_USART1
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at91_serial1_hw_init();
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#endif
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#ifdef CONFIG_USART2
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at91_serial2_hw_init();
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#endif
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#ifdef CONFIG_USART3 /* DBGU */
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at91_serial3_hw_init();
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#endif
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}
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#ifdef CONFIG_HAS_DATAFLASH
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void at91_spi0_hw_init(unsigned long cs_mask)
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{
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at91_set_B_periph(AT91_PIN_PA0, 0); /* SPI0_MISO */
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at91_set_B_periph(AT91_PIN_PA1, 0); /* SPI0_MOSI */
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at91_set_B_periph(AT91_PIN_PA2, 0); /* SPI0_SPCK */
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/* Enable clock */
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at91_sys_write(AT91_PMC_PCER, 1 << AT91CAP9_ID_SPI0);
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if (cs_mask & (1 << 0)) {
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at91_set_B_periph(AT91_PIN_PA5, 1);
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}
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if (cs_mask & (1 << 1)) {
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at91_set_B_periph(AT91_PIN_PA3, 1);
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}
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if (cs_mask & (1 << 2)) {
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at91_set_B_periph(AT91_PIN_PD0, 1);
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}
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if (cs_mask & (1 << 3)) {
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at91_set_B_periph(AT91_PIN_PD1, 1);
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}
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if (cs_mask & (1 << 4)) {
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at91_set_gpio_output(AT91_PIN_PA5, 1);
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}
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if (cs_mask & (1 << 5)) {
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at91_set_gpio_output(AT91_PIN_PA3, 1);
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}
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if (cs_mask & (1 << 6)) {
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at91_set_gpio_output(AT91_PIN_PD0, 1);
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}
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if (cs_mask & (1 << 7)) {
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at91_set_gpio_output(AT91_PIN_PD1, 1);
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}
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}
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void at91_spi1_hw_init(unsigned long cs_mask)
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{
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at91_set_A_periph(AT91_PIN_PB12, 0); /* SPI1_MISO */
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at91_set_A_periph(AT91_PIN_PB13, 0); /* SPI1_MOSI */
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at91_set_A_periph(AT91_PIN_PB14, 0); /* SPI1_SPCK */
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/* Enable clock */
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at91_sys_write(AT91_PMC_PCER, 1 << AT91CAP9_ID_SPI1);
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if (cs_mask & (1 << 0)) {
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at91_set_A_periph(AT91_PIN_PB15, 1);
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}
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if (cs_mask & (1 << 1)) {
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at91_set_A_periph(AT91_PIN_PB16, 1);
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}
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if (cs_mask & (1 << 2)) {
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at91_set_A_periph(AT91_PIN_PB17, 1);
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}
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if (cs_mask & (1 << 3)) {
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at91_set_A_periph(AT91_PIN_PB18, 1);
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}
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if (cs_mask & (1 << 4)) {
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at91_set_gpio_output(AT91_PIN_PB15, 1);
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}
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if (cs_mask & (1 << 5)) {
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at91_set_gpio_output(AT91_PIN_PB16, 1);
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}
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if (cs_mask & (1 << 6)) {
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at91_set_gpio_output(AT91_PIN_PB17, 1);
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}
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if (cs_mask & (1 << 7)) {
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at91_set_gpio_output(AT91_PIN_PB18, 1);
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}
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}
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#endif
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#ifdef CONFIG_MACB
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void at91_macb_hw_init(void)
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{
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at91_set_A_periph(AT91_PIN_PB21, 0); /* ETXCK_EREFCK */
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at91_set_A_periph(AT91_PIN_PB22, 0); /* ERXDV */
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at91_set_A_periph(AT91_PIN_PB25, 0); /* ERX0 */
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at91_set_A_periph(AT91_PIN_PB26, 0); /* ERX1 */
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at91_set_A_periph(AT91_PIN_PB27, 0); /* ERXER */
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at91_set_A_periph(AT91_PIN_PB28, 0); /* ETXEN */
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at91_set_A_periph(AT91_PIN_PB23, 0); /* ETX0 */
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at91_set_A_periph(AT91_PIN_PB24, 0); /* ETX1 */
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at91_set_A_periph(AT91_PIN_PB30, 0); /* EMDIO */
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at91_set_A_periph(AT91_PIN_PB29, 0); /* EMDC */
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#ifndef CONFIG_RMII
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at91_set_B_periph(AT91_PIN_PC25, 0); /* ECRS */
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at91_set_B_periph(AT91_PIN_PC26, 0); /* ECOL */
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at91_set_B_periph(AT91_PIN_PC22, 0); /* ERX2 */
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at91_set_B_periph(AT91_PIN_PC23, 0); /* ERX3 */
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at91_set_B_periph(AT91_PIN_PC27, 0); /* ERXCK */
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at91_set_B_periph(AT91_PIN_PC20, 0); /* ETX2 */
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at91_set_B_periph(AT91_PIN_PC21, 0); /* ETX3 */
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at91_set_B_periph(AT91_PIN_PC24, 0); /* ETXER */
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#endif
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}
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#endif
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#ifdef CONFIG_AT91_CAN
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void at91_can_hw_init(void)
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{
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at91_set_A_periph(AT91_PIN_PA12, 0); /* CAN_TX */
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at91_set_A_periph(AT91_PIN_PA13, 1); /* CAN_RX */
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/* Enable clock */
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at91_sys_write(AT91_PMC_PCER, 1 << AT91CAP9_ID_CAN);
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}
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#endif
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