2 * Copyright (C) 2009 Valentin Longchamp, EPFL Mobots group
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
19 #include <linux/gpio.h>
20 #include <linux/init.h>
21 #include <linux/interrupt.h>
22 #include <linux/platform_device.h>
23 #include <linux/types.h>
25 #include <mach/common.h>
26 #include <mach/imx-uart.h>
27 #include <mach/iomux-mx3.h>
28 #include <mach/hardware.h>
33 static unsigned int devboard_pins[] = {
35 MX31_PIN_CTS2__CTS2, MX31_PIN_RTS2__RTS2,
36 MX31_PIN_TXD2__TXD2, MX31_PIN_RXD2__RXD2,
38 MX31_PIN_PC_PWRON__SD2_DATA3, MX31_PIN_PC_VS1__SD2_DATA2,
39 MX31_PIN_PC_READY__SD2_DATA1, MX31_PIN_PC_WAIT_B__SD2_DATA0,
40 MX31_PIN_PC_CD2_B__SD2_CLK, MX31_PIN_PC_CD1_B__SD2_CMD,
41 MX31_PIN_ATA_DIOR__GPIO3_28, MX31_PIN_ATA_DIOW__GPIO3_29,
44 static struct imxuart_platform_data uart_pdata = {
45 .flags = IMXUART_HAVE_RTSCTS,
48 #define SDHC2_CD IOMUX_TO_GPIO(MX31_PIN_ATA_DIOR)
49 #define SDHC2_WP IOMUX_TO_GPIO(MX31_PIN_ATA_DIOW)
51 static int devboard_sdhc2_get_ro(struct device *dev)
53 return gpio_get_value(SDHC2_WP);
56 static int devboard_sdhc2_init(struct device *dev, irq_handler_t detect_irq,
59 return request_irq(gpio_to_irq(SDHC2_CD), detect_irq,
60 IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING,
61 "sdhc2-card-detect", data);
64 static void devboard_sdhc2_exit(struct device *dev, void *data)
66 free_irq(gpio_to_irq(SDHC2_CD), data);
69 static struct imxmmc_platform_data sdhc2_pdata = {
70 .get_ro = devboard_sdhc2_get_ro,
71 .init = devboard_sdhc2_init,
72 .exit = devboard_sdhc2_exit,
76 * system init for baseboard usage. Will be called by mx31moboard init.
78 void __init mx31moboard_devboard_init(void)
80 printk(KERN_INFO "Initializing mx31devboard peripherals\n");
82 mxc_iomux_setup_multiple_pins(devboard_pins, ARRAY_SIZE(devboard_pins),
85 mxc_register_device(&mxc_uart_device1, &uart_pdata);
87 mxc_register_device(&mxcsdhc_device1, &sdhc2_pdata);