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board-foxg20.c
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1 /*
2  * Copyright (C) 2005 SAN People
3  * Copyright (C) 2008 Atmel
4  * Copyright (C) 2010 Lee McLoughlin - [email protected]
5  * Copyright (C) 2010 Sergio Tanzilli - [email protected]
6  *
7  * This program is free software; you can redistribute it and/or modify
8  * it under the terms of the GNU General Public License as published by
9  * the Free Software Foundation; either version 2 of the License, or
10  * (at your option) any later version.
11  *
12  * This program is distributed in the hope that it will be useful,
13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15  * GNU General Public License for more details.
16  *
17  * You should have received a copy of the GNU General Public License
18  * along with this program; if not, write to the Free Software
19  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20  */
21 
22 #include <linux/types.h>
23 #include <linux/init.h>
24 #include <linux/mm.h>
25 #include <linux/module.h>
26 #include <linux/platform_device.h>
27 #include <linux/spi/spi.h>
28 #include <linux/spi/at73c213.h>
29 #include <linux/gpio.h>
30 #include <linux/gpio_keys.h>
31 #include <linux/input.h>
32 #include <linux/clk.h>
33 #include <linux/w1-gpio.h>
34 
35 #include <mach/hardware.h>
36 #include <asm/setup.h>
37 #include <asm/mach-types.h>
38 #include <asm/irq.h>
39 
40 #include <asm/mach/arch.h>
41 #include <asm/mach/map.h>
42 #include <asm/mach/irq.h>
43 
44 #include <mach/board.h>
45 #include <mach/at91_aic.h>
46 #include <mach/at91sam9_smc.h>
47 
48 #include "sam9_smc.h"
49 #include "generic.h"
50 
51 /*
52  * The FOX Board G20 hardware comes as the "Netus G20" board with
53  * just the cpu, ram, dataflash and two header connectors.
54  * This is plugged into the FOX Board which provides the ethernet,
55  * usb, rtc, leds, switch, ...
56  *
57  * For more info visit: http://www.acmesystems.it/foxg20
58  */
59 
60 
61 static void __init foxg20_init_early(void)
62 {
63  /* Initialize processor: 18.432 MHz crystal */
64  at91_initialize(18432000);
65 }
66 
67 /*
68  * USB Host port
69  */
70 static struct at91_usbh_data __initdata foxg20_usbh_data = {
71  .ports = 2,
72  .vbus_pin = {-EINVAL, -EINVAL},
73  .overcurrent_pin= {-EINVAL, -EINVAL},
74 };
75 
76 /*
77  * USB Device port
78  */
79 static struct at91_udc_data __initdata foxg20_udc_data = {
80  .vbus_pin = AT91_PIN_PC6,
81  .pullup_pin = -EINVAL, /* pull-up driven by UDC */
82 };
83 
84 
85 /*
86  * SPI devices.
87  */
88 static struct spi_board_info foxg20_spi_devices[] = {
89 #if !IS_ENABLED(CONFIG_MMC_ATMELMCI)
90  {
91  .modalias = "mtd_dataflash",
92  .chip_select = 1,
93  .max_speed_hz = 15 * 1000 * 1000,
94  .bus_num = 0,
95  },
96 #endif
97 };
98 
99 
100 /*
101  * MACB Ethernet device
102  */
103 static struct macb_platform_data __initdata foxg20_macb_data = {
104  .phy_irq_pin = AT91_PIN_PA7,
105  .is_rmii = 1,
106 };
107 
108 /*
109  * MCI (SD/MMC)
110  * det_pin, wp_pin and vcc_pin are not connected
111  */
112 static struct mci_platform_data __initdata foxg20_mci0_data = {
113  .slot[1] = {
114  .bus_width = 4,
115  .detect_pin = -EINVAL,
116  .wp_pin = -EINVAL,
117  },
118 };
119 
120 
121 /*
122  * LEDs
123  */
124 static struct gpio_led foxg20_leds[] = {
125  { /* user led, red */
126  .name = "user_led",
127  .gpio = AT91_PIN_PC7,
128  .active_low = 0,
129  .default_trigger = "heartbeat",
130  },
131 };
132 
133 
134 /*
135  * GPIO Buttons
136  */
137 #if defined(CONFIG_KEYBOARD_GPIO) || defined(CONFIG_KEYBOARD_GPIO_MODULE)
138 static struct gpio_keys_button foxg20_buttons[] = {
139  {
140  .gpio = AT91_PIN_PC4,
141  .code = BTN_1,
142  .desc = "Button 1",
143  .active_low = 1,
144  .wakeup = 1,
145  },
146 };
147 
148 static struct gpio_keys_platform_data foxg20_button_data = {
149  .buttons = foxg20_buttons,
150  .nbuttons = ARRAY_SIZE(foxg20_buttons),
151 };
152 
153 static struct platform_device foxg20_button_device = {
154  .name = "gpio-keys",
155  .id = -1,
156  .num_resources = 0,
157  .dev = {
158  .platform_data = &foxg20_button_data,
159  }
160 };
161 
162 static void __init foxg20_add_device_buttons(void)
163 {
164  at91_set_gpio_input(AT91_PIN_PC4, 1); /* btn1 */
166 
167  platform_device_register(&foxg20_button_device);
168 }
169 #else
170 static void __init foxg20_add_device_buttons(void) {}
171 #endif
172 
173 
174 #if defined(CONFIG_W1_MASTER_GPIO) || defined(CONFIG_W1_MASTER_GPIO_MODULE)
175 static struct w1_gpio_platform_data w1_gpio_pdata = {
176  /* If you choose to use a pin other than PB16 it needs to be 3.3V */
177  .pin = AT91_PIN_PB16,
178  .is_open_drain = 1,
179 };
180 
181 static struct platform_device w1_device = {
182  .name = "w1-gpio",
183  .id = -1,
184  .dev.platform_data = &w1_gpio_pdata,
185 };
186 
187 static void __init at91_add_device_w1(void)
188 {
189  at91_set_GPIO_periph(w1_gpio_pdata.pin, 1);
190  at91_set_multi_drive(w1_gpio_pdata.pin, 1);
191  platform_device_register(&w1_device);
192 }
193 
194 #endif
195 
196 
197 static struct i2c_board_info __initdata foxg20_i2c_devices[] = {
198  {
199  I2C_BOARD_INFO("24c512", 0x50),
200  },
201 };
202 
203 
204 static void __init foxg20_board_init(void)
205 {
206  /* Serial */
207  /* DBGU on ttyS0. (Rx & Tx only) */
208  at91_register_uart(0, 0, 0);
209 
210  /* USART0 on ttyS1. (Rx, Tx, CTS, RTS, DTR, DSR, DCD, RI) */
217  | ATMEL_UART_RI);
218 
219  /* USART1 on ttyS2. (Rx, Tx, RTS, CTS) */
222  | ATMEL_UART_RTS);
223 
224  /* USART2 on ttyS3. (Rx & Tx only) */
226 
227  /* USART3 on ttyS4. (Rx, Tx, RTS, CTS) */
230  | ATMEL_UART_RTS);
231 
232  /* USART4 on ttyS5. (Rx & Tx only) */
234 
235  /* USART5 on ttyS6. (Rx & Tx only) */
237 
238  /* Set the internal pull-up resistor on DRXD */
241  /* USB Host */
242  at91_add_device_usbh(&foxg20_usbh_data);
243  /* USB Device */
244  at91_add_device_udc(&foxg20_udc_data);
245  /* SPI */
246  at91_add_device_spi(foxg20_spi_devices, ARRAY_SIZE(foxg20_spi_devices));
247  /* Ethernet */
248  at91_add_device_eth(&foxg20_macb_data);
249  /* MMC */
250  at91_add_device_mci(0, &foxg20_mci0_data);
251  /* I2C */
252  at91_add_device_i2c(foxg20_i2c_devices, ARRAY_SIZE(foxg20_i2c_devices));
253  /* LEDs */
254  at91_gpio_leds(foxg20_leds, ARRAY_SIZE(foxg20_leds));
255  /* Push Buttons */
256  foxg20_add_device_buttons();
257 #if defined(CONFIG_W1_MASTER_GPIO) || defined(CONFIG_W1_MASTER_GPIO_MODULE)
258  at91_add_device_w1();
259 #endif
260 }
261 
262 MACHINE_START(ACMENETUSFOXG20, "Acme Systems srl FOX Board G20")
263  /* Maintainer: Sergio Tanzilli */
264  .timer = &at91sam926x_timer,
265  .map_io = at91_map_io,
266  .handle_irq = at91_aic_handle_irq,
267  .init_early = foxg20_init_early,
269  .init_machine = foxg20_board_init,