1 /*
2 * linux/arch/arm/mach-at91/board-usb-a9260.c
3 *
4 * Copyright (C) 2005 SAN People
5 * Copyright (C) 2006 Atmel
6 * Copyright (C) 2007 Calao-systems
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
21 */
22
23 #include <linux/types.h>
24 #include <linux/init.h>
25 #include <linux/mm.h>
26 #include <linux/module.h>
27 #include <linux/platform_device.h>
28 #include <linux/spi/spi.h>
29 #include <linux/gpio_keys.h>
30 #include <linux/input.h>
31 #include <linux/clk.h>
32
33 #include <asm/setup.h>
34 #include <asm/mach-types.h>
35 #include <asm/irq.h>
36
37 #include <asm/mach/arch.h>
38 #include <asm/mach/map.h>
39 #include <asm/mach/irq.h>
40
41 #include <mach/hardware.h>
42 #include <mach/board.h>
43 #include <mach/gpio.h>
44 #include <mach/at91sam9_smc.h>
45 #include <mach/at91_shdwc.h>
46
47 #include "sam9_smc.h"
48 #include "generic.h"
49
50
ek_map_io(void)51 static void __init ek_map_io(void)
52 {
53 /* Initialize processor: 12.000 MHz crystal */
54 at91sam9260_initialize(12000000);
55
56 /* DBGU on ttyS0. (Rx & Tx only) */
57 at91_register_uart(0, 0, 0);
58
59 /* set serial console to ttyS0 (ie, DBGU) */
60 at91_set_serial_console(0);
61 }
62
ek_init_irq(void)63 static void __init ek_init_irq(void)
64 {
65 at91sam9260_init_interrupts(NULL);
66 }
67
68
69 /*
70 * USB Host port
71 */
72 static struct at91_usbh_data __initdata ek_usbh_data = {
73 .ports = 2,
74 };
75
76 /*
77 * USB Device port
78 */
79 static struct at91_udc_data __initdata ek_udc_data = {
80 .vbus_pin = AT91_PIN_PC5,
81 .pullup_pin = 0, /* pull-up driven by UDC */
82 };
83
84 /*
85 * MACB Ethernet device
86 */
87 static struct at91_eth_data __initdata ek_macb_data = {
88 .phy_irq_pin = AT91_PIN_PA31,
89 .is_rmii = 1,
90 };
91
92 /*
93 * NAND flash
94 */
95 static struct mtd_partition __initdata ek_nand_partition[] = {
96 {
97 .name = "Uboot & Kernel",
98 .offset = 0,
99 .size = SZ_16M,
100 },
101 {
102 .name = "Root FS",
103 .offset = MTDPART_OFS_NXTBLK,
104 .size = 120 * SZ_1M,
105 },
106 {
107 .name = "FS",
108 .offset = MTDPART_OFS_NXTBLK,
109 .size = 120 * SZ_1M,
110 }
111 };
112
nand_partitions(int size,int * num_partitions)113 static struct mtd_partition * __init nand_partitions(int size, int *num_partitions)
114 {
115 *num_partitions = ARRAY_SIZE(ek_nand_partition);
116 return ek_nand_partition;
117 }
118
119 static struct atmel_nand_data __initdata ek_nand_data = {
120 .ale = 21,
121 .cle = 22,
122 // .det_pin = ... not connected
123 .rdy_pin = AT91_PIN_PC13,
124 .enable_pin = AT91_PIN_PC14,
125 .partition_info = nand_partitions,
126 };
127
128 static struct sam9_smc_config __initdata ek_nand_smc_config = {
129 .ncs_read_setup = 0,
130 .nrd_setup = 1,
131 .ncs_write_setup = 0,
132 .nwe_setup = 1,
133
134 .ncs_read_pulse = 3,
135 .nrd_pulse = 3,
136 .ncs_write_pulse = 3,
137 .nwe_pulse = 3,
138
139 .read_cycle = 5,
140 .write_cycle = 5,
141
142 .mode = AT91_SMC_READMODE | AT91_SMC_WRITEMODE | AT91_SMC_EXNWMODE_DISABLE | AT91_SMC_DBW_8,
143 .tdf_cycles = 2,
144 };
145
ek_add_device_nand(void)146 static void __init ek_add_device_nand(void)
147 {
148 /* configure chip-select 3 (NAND) */
149 sam9_smc_configure(3, &ek_nand_smc_config);
150
151 at91_add_device_nand(&ek_nand_data);
152 }
153
154 /*
155 * GPIO Buttons
156 */
157
158 #if defined(CONFIG_KEYBOARD_GPIO) || defined(CONFIG_KEYBOARD_GPIO_MODULE)
159 static struct gpio_keys_button ek_buttons[] = {
160 { /* USER PUSH BUTTON */
161 .code = KEY_ENTER,
162 .gpio = AT91_PIN_PB10,
163 .active_low = 1,
164 .desc = "user_pb",
165 .wakeup = 1,
166 }
167 };
168
169 static struct gpio_keys_platform_data ek_button_data = {
170 .buttons = ek_buttons,
171 .nbuttons = ARRAY_SIZE(ek_buttons),
172 };
173
174 static struct platform_device ek_button_device = {
175 .name = "gpio-keys",
176 .id = -1,
177 .num_resources = 0,
178 .dev = {
179 .platform_data = &ek_button_data,
180 }
181 };
182
ek_add_device_buttons(void)183 static void __init ek_add_device_buttons(void)
184 {
185 at91_set_GPIO_periph(AT91_PIN_PB10, 1); /* user push button, pull up enabled */
186 at91_set_deglitch(AT91_PIN_PB10, 1);
187
188 platform_device_register(&ek_button_device);
189 }
190 #else
ek_add_device_buttons(void)191 static void __init ek_add_device_buttons(void) {}
192 #endif
193
194 /*
195 * LEDs
196 */
197 static struct gpio_led ek_leds[] = {
198 { /* user_led (green) */
199 .name = "user_led",
200 .gpio = AT91_PIN_PB21,
201 .active_low = 0,
202 .default_trigger = "heartbeat",
203 }
204 };
205
ek_board_init(void)206 static void __init ek_board_init(void)
207 {
208 /* Serial */
209 at91_add_device_serial();
210 /* USB Host */
211 at91_add_device_usbh(&ek_usbh_data);
212 /* USB Device */
213 at91_add_device_udc(&ek_udc_data);
214 /* NAND */
215 ek_add_device_nand();
216 /* I2C */
217 at91_add_device_i2c(NULL, 0);
218 /* Ethernet */
219 at91_add_device_eth(&ek_macb_data);
220 /* Push Buttons */
221 ek_add_device_buttons();
222 /* LEDs */
223 at91_gpio_leds(ek_leds, ARRAY_SIZE(ek_leds));
224 /* shutdown controller, wakeup button (5 msec low) */
225 at91_sys_write(AT91_SHDW_MR, AT91_SHDW_CPTWK0_(10) | AT91_SHDW_WKMODE0_LOW
226 | AT91_SHDW_RTTWKEN);
227 }
228
229 MACHINE_START(USB_A9260, "CALAO USB_A9260")
230 /* Maintainer: calao-systems */
231 .boot_params = AT91_SDRAM_BASE + 0x100,
232 .timer = &at91sam926x_timer,
233 .map_io = ek_map_io,
234 .init_irq = ek_init_irq,
235 .init_machine = ek_board_init,
236 MACHINE_END
237