2 * Copyright (C) 2008 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/delay.h>
20 #include <linux/gpio.h>
21 #include <linux/init.h>
22 #include <linux/interrupt.h>
23 #include <linux/memory.h>
24 #include <linux/mtd/physmap.h>
25 #include <linux/mtd/partitions.h>
26 #include <linux/platform_device.h>
27 #include <linux/types.h>
29 #include <asm/mach-types.h>
30 #include <asm/mach/arch.h>
31 #include <asm/mach/time.h>
32 #include <asm/mach/map.h>
33 #include <mach/board-mx31moboard.h>
34 #include <mach/common.h>
35 #include <mach/hardware.h>
36 #include <mach/imx-uart.h>
37 #include <mach/iomux-mx3.h>
40 #include <mach/mx31.h>
44 static unsigned int moboard_pins[] = {
46 MX31_PIN_CTS1__CTS1, MX31_PIN_RTS1__RTS1,
47 MX31_PIN_TXD1__TXD1, MX31_PIN_RXD1__RXD1,
49 MX31_PIN_PC_RST__CTS5, MX31_PIN_PC_VS2__RTS5,
50 MX31_PIN_PC_BVD2__TXD5, MX31_PIN_PC_BVD1__RXD5,
52 MX31_PIN_I2C_DAT__I2C1_SDA, MX31_PIN_I2C_CLK__I2C1_SCL,
54 MX31_PIN_DCD_DTE1__I2C2_SDA, MX31_PIN_RI_DTE1__I2C2_SCL,
56 MX31_PIN_SD1_DATA3__SD1_DATA3, MX31_PIN_SD1_DATA2__SD1_DATA2,
57 MX31_PIN_SD1_DATA1__SD1_DATA1, MX31_PIN_SD1_DATA0__SD1_DATA0,
58 MX31_PIN_SD1_CLK__SD1_CLK, MX31_PIN_SD1_CMD__SD1_CMD,
59 MX31_PIN_ATA_CS0__GPIO3_26, MX31_PIN_ATA_CS1__GPIO3_27,
61 MX31_PIN_GPIO1_0__GPIO1_0,
64 static struct physmap_flash_data mx31moboard_flash_data = {
68 static struct resource mx31moboard_flash_resource = {
71 .flags = IORESOURCE_MEM,
74 static struct platform_device mx31moboard_flash = {
75 .name = "physmap-flash",
78 .platform_data = &mx31moboard_flash_data,
80 .resource = &mx31moboard_flash_resource,
84 static struct imxuart_platform_data uart_pdata = {
85 .flags = IMXUART_HAVE_RTSCTS,
88 static struct imxi2c_platform_data moboard_i2c0_pdata = {
92 static struct imxi2c_platform_data moboard_i2c1_pdata = {
96 #define SDHC1_CD IOMUX_TO_GPIO(MX31_PIN_ATA_CS0)
97 #define SDHC1_WP IOMUX_TO_GPIO(MX31_PIN_ATA_CS1)
99 static int moboard_sdhc1_get_ro(struct device *dev)
101 return gpio_get_value(SDHC1_WP);
104 static int moboard_sdhc1_init(struct device *dev, irq_handler_t detect_irq,
109 ret = gpio_request(SDHC1_CD, "sdhc-detect");
113 gpio_direction_input(SDHC1_CD);
115 ret = gpio_request(SDHC1_WP, "sdhc-wp");
118 gpio_direction_input(SDHC1_WP);
120 ret = request_irq(gpio_to_irq(SDHC1_CD), detect_irq,
121 IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING,
122 "sdhc1-card-detect", data);
124 goto err_gpio_free_2;
136 static void moboard_sdhc1_exit(struct device *dev, void *data)
138 free_irq(gpio_to_irq(SDHC1_CD), data);
143 static struct imxmmc_platform_data sdhc1_pdata = {
144 .get_ro = moboard_sdhc1_get_ro,
145 .init = moboard_sdhc1_init,
146 .exit = moboard_sdhc1_exit,
150 * this pin is dedicated for all mx31moboard systems, so we do it here
152 #define USB_RESET_B IOMUX_TO_GPIO(MX31_PIN_GPIO1_0)
154 static void usb_xcvr_reset(void)
156 gpio_request(USB_RESET_B, "usb-reset");
157 gpio_direction_output(USB_RESET_B, 0);
159 gpio_set_value(USB_RESET_B, 1);
162 static struct platform_device *devices[] __initdata = {
166 static int mx31moboard_baseboard;
167 core_param(mx31moboard_baseboard, mx31moboard_baseboard, int, 0444);
170 * Board specific initialization.
172 static void __init mxc_board_init(void)
174 mxc_iomux_setup_multiple_pins(moboard_pins, ARRAY_SIZE(moboard_pins),
177 platform_add_devices(devices, ARRAY_SIZE(devices));
179 mxc_register_device(&mxc_uart_device0, &uart_pdata);
180 mxc_register_device(&mxc_uart_device4, &uart_pdata);
182 mxc_register_device(&mxc_i2c_device0, &moboard_i2c0_pdata);
183 mxc_register_device(&mxc_i2c_device1, &moboard_i2c1_pdata);
185 mxc_register_device(&mxcsdhc_device0, &sdhc1_pdata);
189 switch (mx31moboard_baseboard) {
193 mx31moboard_devboard_init();
196 mx31moboard_marxbot_init();
199 printk(KERN_ERR "Illegal mx31moboard_baseboard type %d\n",
200 mx31moboard_baseboard);
204 static void __init mx31moboard_timer_init(void)
206 mx31_clocks_init(26000000);
209 struct sys_timer mx31moboard_timer = {
210 .init = mx31moboard_timer_init,
213 MACHINE_START(MX31MOBOARD, "EPFL Mobots mx31moboard")
214 /* Maintainer: Valentin Longchamp, EPFL Mobots group */
215 .phys_io = AIPS1_BASE_ADDR,
216 .io_pg_offst = ((AIPS1_BASE_ADDR_VIRT) >> 18) & 0xfffc,
217 .boot_params = PHYS_OFFSET + 0x100,
218 .map_io = mx31_map_io,
219 .init_irq = mx31_init_irq,
220 .init_machine = mxc_board_init,
221 .timer = &mx31moboard_timer,