2 * LogicPD i.MX31 SOM-LV development board support
4 * Copyright (c) 2009 Daniel Mack <daniel@caiaq.de>
6 * based on code for other MX31 boards,
8 * Copyright 2005-2007 Freescale Semiconductor
9 * Copyright (c) 2009 Alberto Panizzo <maramaopercheseimorto@gmail.com>
10 * Copyright (C) 2009 Valentin Longchamp, EPFL Mobots group
12 * This program is free software; you can redistribute it and/or modify
13 * it under the terms of the GNU General Public License as published by
14 * the Free Software Foundation; either version 2 of the License, or
15 * (at your option) any later version.
17 * This program is distributed in the hope that it will be useful,
18 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 * GNU General Public License for more details.
22 * You should have received a copy of the GNU General Public License
23 * along with this program; if not, write to the Free Software
24 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
27 #include <linux/kernel.h>
28 #include <linux/types.h>
29 #include <linux/init.h>
30 #include <linux/gpio.h>
32 #include <asm/mach-types.h>
33 #include <asm/mach/arch.h>
34 #include <asm/mach/map.h>
36 #include <mach/hardware.h>
37 #include <mach/common.h>
38 #include <mach/imx-uart.h>
39 #include <mach/iomux-mx3.h>
40 #include <mach/board-mx31lite.h>
46 * This file contains board-specific initialization routines for the
47 * LogicPD i.MX31 SOM-LV development board, aka 'LiteKit'.
48 * If you design an own baseboard for the module, use this file as base
52 static unsigned int litekit_db_board_pins[] __initdata = {
61 static struct imxuart_platform_data uart_pdata __initdata = {
62 .flags = IMXUART_HAVE_RTSCTS,
67 static int gpio_det, gpio_wp;
69 #define MMC_PAD_CFG (PAD_CTL_DRV_MAX | PAD_CTL_SRE_FAST | PAD_CTL_HYS_CMOS | \
70 PAD_CTL_ODE_CMOS | PAD_CTL_100K_PU)
72 static int mxc_mmc1_get_ro(struct device *dev)
74 return gpio_get_value(IOMUX_TO_GPIO(MX31_PIN_LCS0));
77 static int mxc_mmc1_init(struct device *dev,
78 irq_handler_t detect_irq, void *data)
82 gpio_det = IOMUX_TO_GPIO(MX31_PIN_DCD_DCE1);
83 gpio_wp = IOMUX_TO_GPIO(MX31_PIN_GPIO1_6);
85 mxc_iomux_set_pad(MX31_PIN_SD1_DATA0, MMC_PAD_CFG);
86 mxc_iomux_set_pad(MX31_PIN_SD1_DATA1, MMC_PAD_CFG);
87 mxc_iomux_set_pad(MX31_PIN_SD1_DATA2, MMC_PAD_CFG);
88 mxc_iomux_set_pad(MX31_PIN_SD1_DATA3, MMC_PAD_CFG);
89 mxc_iomux_set_pad(MX31_PIN_SD1_CLK, MMC_PAD_CFG);
90 mxc_iomux_set_pad(MX31_PIN_SD1_CMD, MMC_PAD_CFG);
92 ret = gpio_request(gpio_det, "MMC detect");
96 ret = gpio_request(gpio_wp, "MMC w/p");
100 gpio_direction_input(gpio_det);
101 gpio_direction_input(gpio_wp);
103 ret = request_irq(IOMUX_TO_IRQ(MX31_PIN_DCD_DCE1), detect_irq,
104 IRQF_DISABLED | IRQF_TRIGGER_FALLING,
120 static void mxc_mmc1_exit(struct device *dev, void *data)
124 free_irq(IOMUX_TO_IRQ(MX31_PIN_GPIO1_1), data);
127 static struct imxmmc_platform_data mmc_pdata = {
128 .get_ro = mxc_mmc1_get_ro,
129 .init = mxc_mmc1_init,
130 .exit = mxc_mmc1_exit,
133 void __init mx31lite_db_init(void)
135 mxc_iomux_setup_multiple_pins(litekit_db_board_pins,
136 ARRAY_SIZE(litekit_db_board_pins),
137 "development board pins");
138 mxc_register_device(&mxc_uart_device0, &uart_pdata);
139 mxc_register_device(&mxcsdhc_device0, &mmc_pdata);