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/fsl_devices.h>
21 #include <linux/gpio.h>
22 #include <linux/init.h>
23 #include <linux/interrupt.h>
24 #include <linux/leds.h>
25 #include <linux/memory.h>
26 #include <linux/mtd/physmap.h>
27 #include <linux/mtd/partitions.h>
28 #include <linux/platform_device.h>
29 #include <linux/types.h>
31 #include <asm/mach-types.h>
32 #include <asm/mach/arch.h>
33 #include <asm/mach/time.h>
34 #include <asm/mach/map.h>
35 #include <mach/board-mx31moboard.h>
36 #include <mach/common.h>
37 #include <mach/hardware.h>
38 #include <mach/imx-uart.h>
39 #include <mach/iomux-mx3.h>
42 #include <mach/mx31.h>
46 static unsigned int moboard_pins[] = {
48 MX31_PIN_TXD1__TXD1, MX31_PIN_RXD1__RXD1,
49 MX31_PIN_CTS1__GPIO2_7,
51 MX31_PIN_PC_RST__CTS5, MX31_PIN_PC_VS2__RTS5,
52 MX31_PIN_PC_BVD2__TXD5, MX31_PIN_PC_BVD1__RXD5,
54 MX31_PIN_I2C_DAT__I2C1_SDA, MX31_PIN_I2C_CLK__I2C1_SCL,
56 MX31_PIN_DCD_DTE1__I2C2_SDA, MX31_PIN_RI_DTE1__I2C2_SCL,
58 MX31_PIN_SD1_DATA3__SD1_DATA3, MX31_PIN_SD1_DATA2__SD1_DATA2,
59 MX31_PIN_SD1_DATA1__SD1_DATA1, MX31_PIN_SD1_DATA0__SD1_DATA0,
60 MX31_PIN_SD1_CLK__SD1_CLK, MX31_PIN_SD1_CMD__SD1_CMD,
61 MX31_PIN_ATA_CS0__GPIO3_26, MX31_PIN_ATA_CS1__GPIO3_27,
63 MX31_PIN_GPIO1_0__GPIO1_0,
65 MX31_PIN_USBOTG_DATA0__USBOTG_DATA0,
66 MX31_PIN_USBOTG_DATA1__USBOTG_DATA1,
67 MX31_PIN_USBOTG_DATA2__USBOTG_DATA2,
68 MX31_PIN_USBOTG_DATA3__USBOTG_DATA3,
69 MX31_PIN_USBOTG_DATA4__USBOTG_DATA4,
70 MX31_PIN_USBOTG_DATA5__USBOTG_DATA5,
71 MX31_PIN_USBOTG_DATA6__USBOTG_DATA6,
72 MX31_PIN_USBOTG_DATA7__USBOTG_DATA7,
73 MX31_PIN_USBOTG_CLK__USBOTG_CLK, MX31_PIN_USBOTG_DIR__USBOTG_DIR,
74 MX31_PIN_USBOTG_NXT__USBOTG_NXT, MX31_PIN_USBOTG_STP__USBOTG_STP,
75 MX31_PIN_USB_OC__GPIO1_30,
77 MX31_PIN_SVEN0__GPIO2_0, MX31_PIN_STX0__GPIO2_1,
78 MX31_PIN_SRX0__GPIO2_2, MX31_PIN_SIMPD0__GPIO2_3,
80 MX31_PIN_DTR_DCE1__GPIO2_8, MX31_PIN_DSR_DCE1__GPIO2_9,
81 MX31_PIN_RI_DCE1__GPIO2_10, MX31_PIN_DCD_DCE1__GPIO2_11,
84 static struct physmap_flash_data mx31moboard_flash_data = {
88 static struct resource mx31moboard_flash_resource = {
91 .flags = IORESOURCE_MEM,
94 static struct platform_device mx31moboard_flash = {
95 .name = "physmap-flash",
98 .platform_data = &mx31moboard_flash_data,
100 .resource = &mx31moboard_flash_resource,
104 static int moboard_uart0_init(struct platform_device *pdev)
106 gpio_request(IOMUX_TO_GPIO(MX31_PIN_CTS1), "uart0-cts-hack");
107 gpio_direction_output(IOMUX_TO_GPIO(MX31_PIN_CTS1), 0);
111 static struct imxuart_platform_data uart0_pdata = {
112 .init = moboard_uart0_init,
115 static struct imxuart_platform_data uart4_pdata = {
116 .flags = IMXUART_HAVE_RTSCTS,
119 static struct imxi2c_platform_data moboard_i2c0_pdata = {
123 static struct imxi2c_platform_data moboard_i2c1_pdata = {
127 #define SDHC1_CD IOMUX_TO_GPIO(MX31_PIN_ATA_CS0)
128 #define SDHC1_WP IOMUX_TO_GPIO(MX31_PIN_ATA_CS1)
130 static int moboard_sdhc1_get_ro(struct device *dev)
132 return !gpio_get_value(SDHC1_WP);
135 static int moboard_sdhc1_init(struct device *dev, irq_handler_t detect_irq,
140 ret = gpio_request(SDHC1_CD, "sdhc-detect");
144 gpio_direction_input(SDHC1_CD);
146 ret = gpio_request(SDHC1_WP, "sdhc-wp");
149 gpio_direction_input(SDHC1_WP);
151 ret = request_irq(gpio_to_irq(SDHC1_CD), detect_irq,
152 IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING,
153 "sdhc1-card-detect", data);
155 goto err_gpio_free_2;
167 static void moboard_sdhc1_exit(struct device *dev, void *data)
169 free_irq(gpio_to_irq(SDHC1_CD), data);
174 static struct imxmmc_platform_data sdhc1_pdata = {
175 .get_ro = moboard_sdhc1_get_ro,
176 .init = moboard_sdhc1_init,
177 .exit = moboard_sdhc1_exit,
181 * this pin is dedicated for all mx31moboard systems, so we do it here
183 #define USB_RESET_B IOMUX_TO_GPIO(MX31_PIN_GPIO1_0)
185 static void usb_xcvr_reset(void)
187 gpio_request(USB_RESET_B, "usb-reset");
188 gpio_direction_output(USB_RESET_B, 0);
190 gpio_set_value(USB_RESET_B, 1);
193 #define USB_PAD_CFG (PAD_CTL_DRV_MAX | PAD_CTL_SRE_FAST | PAD_CTL_HYS_CMOS | \
194 PAD_CTL_ODE_CMOS | PAD_CTL_100K_PU)
196 #define OTG_EN_B IOMUX_TO_GPIO(MX31_PIN_USB_OC)
198 static void moboard_usbotg_init(void)
200 mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA0, USB_PAD_CFG);
201 mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA1, USB_PAD_CFG);
202 mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA2, USB_PAD_CFG);
203 mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA3, USB_PAD_CFG);
204 mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA4, USB_PAD_CFG);
205 mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA5, USB_PAD_CFG);
206 mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA6, USB_PAD_CFG);
207 mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA7, USB_PAD_CFG);
208 mxc_iomux_set_pad(MX31_PIN_USBOTG_CLK, USB_PAD_CFG);
209 mxc_iomux_set_pad(MX31_PIN_USBOTG_DIR, USB_PAD_CFG);
210 mxc_iomux_set_pad(MX31_PIN_USBOTG_NXT, USB_PAD_CFG);
211 mxc_iomux_set_pad(MX31_PIN_USBOTG_STP, USB_PAD_CFG);
213 gpio_request(OTG_EN_B, "usb-udc-en");
214 gpio_direction_output(OTG_EN_B, 0);
217 static struct fsl_usb2_platform_data usb_pdata = {
218 .operating_mode = FSL_USB2_DR_DEVICE,
219 .phy_mode = FSL_USB2_PHY_ULPI,
222 static struct gpio_led mx31moboard_leds[] = {
224 .name = "coreboard-led-0:red:running",
225 .default_trigger = "heartbeat",
226 .gpio = IOMUX_TO_GPIO(MX31_PIN_SVEN0),
228 .name = "coreboard-led-1:red",
229 .gpio = IOMUX_TO_GPIO(MX31_PIN_STX0),
231 .name = "coreboard-led-2:red",
232 .gpio = IOMUX_TO_GPIO(MX31_PIN_SRX0),
234 .name = "coreboard-led-3:red",
235 .gpio = IOMUX_TO_GPIO(MX31_PIN_SIMPD0),
239 static struct gpio_led_platform_data mx31moboard_led_pdata = {
240 .num_leds = ARRAY_SIZE(mx31moboard_leds),
241 .leds = mx31moboard_leds,
244 static struct platform_device mx31moboard_leds_device = {
248 .platform_data = &mx31moboard_led_pdata,
252 #define SEL0 IOMUX_TO_GPIO(MX31_PIN_DTR_DCE1)
253 #define SEL1 IOMUX_TO_GPIO(MX31_PIN_DSR_DCE1)
254 #define SEL2 IOMUX_TO_GPIO(MX31_PIN_RI_DCE1)
255 #define SEL3 IOMUX_TO_GPIO(MX31_PIN_DCD_DCE1)
257 static void mx31moboard_init_sel_gpios(void)
259 if (!gpio_request(SEL0, "sel0")) {
260 gpio_direction_input(SEL0);
261 gpio_export(SEL0, true);
264 if (!gpio_request(SEL1, "sel1")) {
265 gpio_direction_input(SEL1);
266 gpio_export(SEL1, true);
269 if (!gpio_request(SEL2, "sel2")) {
270 gpio_direction_input(SEL2);
271 gpio_export(SEL2, true);
274 if (!gpio_request(SEL3, "sel3")) {
275 gpio_direction_input(SEL3);
276 gpio_export(SEL3, true);
280 static struct platform_device *devices[] __initdata = {
282 &mx31moboard_leds_device,
285 static int mx31moboard_baseboard;
286 core_param(mx31moboard_baseboard, mx31moboard_baseboard, int, 0444);
289 * Board specific initialization.
291 static void __init mxc_board_init(void)
293 mxc_iomux_setup_multiple_pins(moboard_pins, ARRAY_SIZE(moboard_pins),
296 platform_add_devices(devices, ARRAY_SIZE(devices));
298 mxc_register_device(&mxc_uart_device0, &uart0_pdata);
300 mxc_register_device(&mxc_uart_device4, &uart4_pdata);
302 mx31moboard_init_sel_gpios();
304 mxc_register_device(&mxc_i2c_device0, &moboard_i2c0_pdata);
305 mxc_register_device(&mxc_i2c_device1, &moboard_i2c1_pdata);
307 mxc_register_device(&mxcsdhc_device0, &sdhc1_pdata);
311 moboard_usbotg_init();
312 mxc_register_device(&mxc_otg_udc_device, &usb_pdata);
314 switch (mx31moboard_baseboard) {
318 mx31moboard_devboard_init();
321 mx31moboard_marxbot_init();
324 printk(KERN_ERR "Illegal mx31moboard_baseboard type %d\n",
325 mx31moboard_baseboard);
329 static void __init mx31moboard_timer_init(void)
331 mx31_clocks_init(26000000);
334 struct sys_timer mx31moboard_timer = {
335 .init = mx31moboard_timer_init,
338 MACHINE_START(MX31MOBOARD, "EPFL Mobots mx31moboard")
339 /* Maintainer: Valentin Longchamp, EPFL Mobots group */
340 .phys_io = AIPS1_BASE_ADDR,
341 .io_pg_offst = ((AIPS1_BASE_ADDR_VIRT) >> 18) & 0xfffc,
342 .boot_params = PHYS_OFFSET + 0x100,
343 .map_io = mx31_map_io,
344 .init_irq = mx31_init_irq,
345 .init_machine = mxc_board_init,
346 .timer = &mx31moboard_timer,