206 lines
5.1 KiB
C
206 lines
5.1 KiB
C
/*
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* Copyright (C) 2008 Valentin Longchamp, EPFL Mobots group
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (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, MA 02111-1307 USA
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*/
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#include <linux/gpio.h>
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#include <linux/init.h>
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#include <linux/interrupt.h>
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#include <linux/memory.h>
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#include <linux/mtd/physmap.h>
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#include <linux/mtd/partitions.h>
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#include <linux/platform_device.h>
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#include <linux/types.h>
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#include <asm/mach-types.h>
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#include <asm/mach/arch.h>
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#include <asm/mach/time.h>
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#include <asm/mach/map.h>
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#include <mach/board-mx31moboard.h>
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#include <mach/common.h>
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#include <mach/hardware.h>
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#include <mach/imx-uart.h>
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#include <mach/iomux-mx3.h>
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#include <mach/i2c.h>
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#include <mach/mmc.h>
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#include <mach/mx31.h>
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#include "devices.h"
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static unsigned int moboard_pins[] = {
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/* UART0 */
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MX31_PIN_CTS1__CTS1, MX31_PIN_RTS1__RTS1,
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MX31_PIN_TXD1__TXD1, MX31_PIN_RXD1__RXD1,
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/* UART4 */
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MX31_PIN_PC_RST__CTS5, MX31_PIN_PC_VS2__RTS5,
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MX31_PIN_PC_BVD2__TXD5, MX31_PIN_PC_BVD1__RXD5,
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/* I2C0 */
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MX31_PIN_I2C_DAT__I2C1_SDA, MX31_PIN_I2C_CLK__I2C1_SCL,
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/* I2C1 */
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MX31_PIN_DCD_DTE1__I2C2_SDA, MX31_PIN_RI_DTE1__I2C2_SCL,
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/* SDHC1 */
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MX31_PIN_SD1_DATA3__SD1_DATA3, MX31_PIN_SD1_DATA2__SD1_DATA2,
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MX31_PIN_SD1_DATA1__SD1_DATA1, MX31_PIN_SD1_DATA0__SD1_DATA0,
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MX31_PIN_SD1_CLK__SD1_CLK, MX31_PIN_SD1_CMD__SD1_CMD,
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MX31_PIN_ATA_CS0__GPIO3_26, MX31_PIN_ATA_CS1__GPIO3_27,
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};
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static struct physmap_flash_data mx31moboard_flash_data = {
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.width = 2,
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};
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static struct resource mx31moboard_flash_resource = {
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.start = 0xa0000000,
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.end = 0xa1ffffff,
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.flags = IORESOURCE_MEM,
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};
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static struct platform_device mx31moboard_flash = {
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.name = "physmap-flash",
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.id = 0,
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.dev = {
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.platform_data = &mx31moboard_flash_data,
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},
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.resource = &mx31moboard_flash_resource,
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.num_resources = 1,
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};
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static struct imxuart_platform_data uart_pdata = {
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.flags = IMXUART_HAVE_RTSCTS,
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};
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static struct imxi2c_platform_data moboard_i2c0_pdata = {
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.bitrate = 400000,
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};
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static struct imxi2c_platform_data moboard_i2c1_pdata = {
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.bitrate = 100000,
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};
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#define SDHC1_CD IOMUX_TO_GPIO(MX31_PIN_ATA_CS0)
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#define SDHC1_WP IOMUX_TO_GPIO(MX31_PIN_ATA_CS1)
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static int moboard_sdhc1_get_ro(struct device *dev)
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{
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return gpio_get_value(SDHC1_WP);
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}
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static int moboard_sdhc1_init(struct device *dev, irq_handler_t detect_irq,
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void *data)
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{
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int ret;
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ret = gpio_request(SDHC1_CD, "sdhc-detect");
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if (ret)
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return ret;
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gpio_direction_input(SDHC1_CD);
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ret = gpio_request(SDHC1_WP, "sdhc-wp");
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if (ret)
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goto err_gpio_free;
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gpio_direction_input(SDHC1_WP);
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ret = request_irq(gpio_to_irq(SDHC1_CD), detect_irq,
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IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING,
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"sdhc1-card-detect", data);
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if (ret)
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goto err_gpio_free_2;
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return 0;
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err_gpio_free_2:
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gpio_free(SDHC1_WP);
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err_gpio_free:
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gpio_free(SDHC1_CD);
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return ret;
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}
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static void moboard_sdhc1_exit(struct device *dev, void *data)
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{
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free_irq(gpio_to_irq(SDHC1_CD), data);
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gpio_free(SDHC1_WP);
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gpio_free(SDHC1_CD);
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}
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static struct imxmmc_platform_data sdhc1_pdata = {
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.get_ro = moboard_sdhc1_get_ro,
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.init = moboard_sdhc1_init,
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.exit = moboard_sdhc1_exit,
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};
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static struct platform_device *devices[] __initdata = {
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&mx31moboard_flash,
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};
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static int mx31moboard_baseboard;
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core_param(mx31moboard_baseboard, mx31moboard_baseboard, int, 0444);
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/*
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* Board specific initialization.
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*/
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static void __init mxc_board_init(void)
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{
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mxc_iomux_setup_multiple_pins(moboard_pins, ARRAY_SIZE(moboard_pins),
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"moboard");
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platform_add_devices(devices, ARRAY_SIZE(devices));
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mxc_register_device(&mxc_uart_device0, &uart_pdata);
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mxc_register_device(&mxc_uart_device4, &uart_pdata);
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mxc_register_device(&mxc_i2c_device0, &moboard_i2c0_pdata);
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mxc_register_device(&mxc_i2c_device1, &moboard_i2c1_pdata);
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mxc_register_device(&mxcsdhc_device0, &sdhc1_pdata);
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switch (mx31moboard_baseboard) {
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case MX31NOBOARD:
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break;
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case MX31DEVBOARD:
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mx31moboard_devboard_init();
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break;
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case MX31MARXBOT:
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mx31moboard_marxbot_init();
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break;
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default:
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printk(KERN_ERR "Illegal mx31moboard_baseboard type %d\n",
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mx31moboard_baseboard);
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}
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}
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static void __init mx31moboard_timer_init(void)
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{
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mx31_clocks_init(26000000);
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}
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struct sys_timer mx31moboard_timer = {
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.init = mx31moboard_timer_init,
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};
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MACHINE_START(MX31MOBOARD, "EPFL Mobots mx31moboard")
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/* Maintainer: Valentin Longchamp, EPFL Mobots group */
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.phys_io = AIPS1_BASE_ADDR,
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.io_pg_offst = ((AIPS1_BASE_ADDR_VIRT) >> 18) & 0xfffc,
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.boot_params = PHYS_OFFSET + 0x100,
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.map_io = mx31_map_io,
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.init_irq = mx31_init_irq,
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.init_machine = mxc_board_init,
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.timer = &mx31moboard_timer,
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MACHINE_END
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