1/*
  2 *  Copyright (C) 2010 Christian Glindkamp <christian.glindkamp@taskit.de>
  3 *                     taskit GmbH
  4 *
  5 * This program is free software; you can redistribute it and/or modify
  6 * it under the terms of the GNU General Public License as published by
  7 * the Free Software Foundation; either version 2 of the License, or
  8 * (at your option) any later version.
  9 *
 10 * This program is distributed in the hope that it will be useful,
 11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 13 * GNU General Public License for more details.
 14 *
 15 * You should have received a copy of the GNU General Public License
 16 * along with this program; if not, write to the Free Software
 17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 18 */
 19
 20#include <linux/mm.h>
 21#include <linux/platform_device.h>
 22#include <linux/gpio.h>
 23#include <linux/w1-gpio.h>
 24
 25#include <asm/mach-types.h>
 26#include <asm/mach/arch.h>
 27
 28#include <mach/board.h>
 29#include <mach/at91sam9_smc.h>
 30
 31#include "sam9_smc.h"
 32#include "generic.h"
 33
 34
 35void __init stamp9g20_init_early(void)
 36{
 37	/* Initialize processor: 18.432 MHz crystal */
 38	at91_initialize(18432000);
 39}
 40
 41/*
 42 * NAND flash
 43 */
 44static struct atmel_nand_data __initdata nand_data = {
 45	.ale		= 21,
 46	.cle		= 22,
 47	.rdy_pin	= AT91_PIN_PC13,
 48	.enable_pin	= AT91_PIN_PC14,
 49	.bus_width_16	= 0,
 50	.det_pin	= -EINVAL,
 51	.ecc_mode	= NAND_ECC_SOFT,
 52};
 53
 54static struct sam9_smc_config __initdata nand_smc_config = {
 55	.ncs_read_setup		= 0,
 56	.nrd_setup		= 2,
 57	.ncs_write_setup	= 0,
 58	.nwe_setup		= 2,
 59
 60	.ncs_read_pulse		= 4,
 61	.nrd_pulse		= 4,
 62	.ncs_write_pulse	= 4,
 63	.nwe_pulse		= 4,
 64
 65	.read_cycle		= 7,
 66	.write_cycle		= 7,
 67
 68	.mode			= AT91_SMC_READMODE | AT91_SMC_WRITEMODE | AT91_SMC_EXNWMODE_DISABLE | AT91_SMC_DBW_8,
 69	.tdf_cycles		= 3,
 70};
 71
 72static void __init add_device_nand(void)
 73{
 74	/* configure chip-select 3 (NAND) */
 75	sam9_smc_configure(0, 3, &nand_smc_config);
 76
 77	at91_add_device_nand(&nand_data);
 78}
 79
 80
 81/*
 82 * MCI (SD/MMC)
 83 * det_pin, wp_pin and vcc_pin are not connected
 84 */
 85#if defined(CONFIG_MMC_ATMELMCI) || defined(CONFIG_MMC_ATMELMCI_MODULE)
 86static struct mci_platform_data __initdata mmc_data = {
 87	.slot[0] = {
 88		.bus_width	= 4,
 89		.detect_pin	= -1,
 90		.wp_pin		= -1,
 91	},
 92};
 93#else
 94static struct at91_mmc_data __initdata mmc_data = {
 95	.slot_b		= 0,
 96	.wire4		= 1,
 97	.det_pin	= -EINVAL,
 98	.wp_pin		= -EINVAL,
 99	.vcc_pin	= -EINVAL,
100};
101#endif
102
103
104/*
105 * USB Host port
106 */
107static struct at91_usbh_data __initdata usbh_data = {
108	.ports		= 2,
109	.vbus_pin	= {-EINVAL, -EINVAL},
110	.overcurrent_pin= {-EINVAL, -EINVAL},
111};
112
113
114/*
115 * USB Device port
116 */
117static struct at91_udc_data __initdata portuxg20_udc_data = {
118	.vbus_pin	= AT91_PIN_PC7,
119	.pullup_pin	= -EINVAL,		/* pull-up driven by UDC */
120};
121
122static struct at91_udc_data __initdata stamp9g20evb_udc_data = {
123	.vbus_pin	= AT91_PIN_PA22,
124	.pullup_pin	= -EINVAL,		/* pull-up driven by UDC */
125};
126
127
128/*
129 * MACB Ethernet device
130 */
131static struct macb_platform_data __initdata macb_data = {
132	.phy_irq_pin	= AT91_PIN_PA28,
133	.is_rmii	= 1,
134};
135
136
137/*
138 * LEDs
139 */
140static struct gpio_led portuxg20_leds[] = {
141	{
142		.name			= "LED2",
143		.gpio			= AT91_PIN_PC5,
144		.default_trigger	= "none",
145	}, {
146		.name			= "LED3",
147		.gpio			= AT91_PIN_PC4,
148		.default_trigger	= "none",
149	}, {
150		.name			= "LED4",
151		.gpio			= AT91_PIN_PC10,
152		.default_trigger	= "heartbeat",
153	}
154};
155
156static struct gpio_led stamp9g20evb_leds[] = {
157	{
158		.name			= "D8",
159		.gpio			= AT91_PIN_PB18,
160		.active_low		= 1,
161		.default_trigger	= "none",
162	}, {
163		.name			= "D9",
164		.gpio			= AT91_PIN_PB19,
165		.active_low		= 1,
166		.default_trigger	= "none",
167	}, {
168		.name			= "D10",
169		.gpio			= AT91_PIN_PB20,
170		.active_low		= 1,
171		.default_trigger	= "heartbeat",
172	}
173};
174
175
176/*
177 * SPI devices
178 */
179static struct spi_board_info portuxg20_spi_devices[] = {
180	{
181		.modalias	= "spidev",
182		.chip_select	= 0,
183		.max_speed_hz	= 1 * 1000 * 1000,
184		.bus_num	= 0,
185	}, {
186		.modalias	= "spidev",
187		.chip_select	= 0,
188		.max_speed_hz	= 1 * 1000 * 1000,
189		.bus_num	= 1,
190	},
191};
192
193
194/*
195 * Dallas 1-Wire
196 */
197static struct w1_gpio_platform_data w1_gpio_pdata = {
198	.pin		= AT91_PIN_PA29,
199	.is_open_drain	= 1,
200};
201
202static struct platform_device w1_device = {
203	.name			= "w1-gpio",
204	.id			= -1,
205	.dev.platform_data	= &w1_gpio_pdata,
206};
207
208void add_w1(void)
209{
210	at91_set_GPIO_periph(w1_gpio_pdata.pin, 1);
211	at91_set_multi_drive(w1_gpio_pdata.pin, 1);
212	platform_device_register(&w1_device);
213}
214
215
216void __init stamp9g20_board_init(void)
217{
218	/* Serial */
219	/* DGBU on ttyS0. (Rx & Tx only) */
220	at91_register_uart(0, 0, 0);
221	at91_add_device_serial();
222	/* NAND */
223	add_device_nand();
224	/* MMC */
225#if defined(CONFIG_MMC_ATMELMCI) || defined(CONFIG_MMC_ATMELMCI_MODULE)
226	at91_add_device_mci(0, &mmc_data);
227#else
228	at91_add_device_mmc(0, &mmc_data);
229#endif
230	/* W1 */
231	add_w1();
232}
233
234static void __init portuxg20_board_init(void)
235{
236	/* USART0 on ttyS1. (Rx, Tx, CTS, RTS, DTR, DSR, DCD, RI) */
237	at91_register_uart(AT91SAM9260_ID_US0, 1, ATMEL_UART_CTS | ATMEL_UART_RTS
238						| ATMEL_UART_DTR | ATMEL_UART_DSR
239						| ATMEL_UART_DCD | ATMEL_UART_RI);
240
241	/* USART1 on ttyS2. (Rx, Tx, CTS, RTS) */
242	at91_register_uart(AT91SAM9260_ID_US1, 2, ATMEL_UART_CTS | ATMEL_UART_RTS);
243
244	/* USART2 on ttyS3. (Rx, Tx, CTS, RTS) */
245	at91_register_uart(AT91SAM9260_ID_US2, 3, ATMEL_UART_CTS | ATMEL_UART_RTS);
246
247	/* USART4 on ttyS5. (Rx, Tx only) */
248	at91_register_uart(AT91SAM9260_ID_US4, 5, 0);
249
250	/* USART5 on ttyS6. (Rx, Tx only) */
251	at91_register_uart(AT91SAM9260_ID_US5, 6, 0);
252	stamp9g20_board_init();
253	/* USB Host */
254	at91_add_device_usbh(&usbh_data);
255	/* USB Device */
256	at91_add_device_udc(&portuxg20_udc_data);
257	/* Ethernet */
258	at91_add_device_eth(&macb_data);
259	/* I2C */
260	at91_add_device_i2c(NULL, 0);
261	/* SPI */
262	at91_add_device_spi(portuxg20_spi_devices, ARRAY_SIZE(portuxg20_spi_devices));
263	/* LEDs */
264	at91_gpio_leds(portuxg20_leds, ARRAY_SIZE(portuxg20_leds));
265}
266
267static void __init stamp9g20evb_board_init(void)
268{
269	/* USART0 on ttyS1. (Rx, Tx, CTS, RTS, DTR, DSR, DCD, RI) */
270	at91_register_uart(AT91SAM9260_ID_US0, 1, ATMEL_UART_CTS | ATMEL_UART_RTS
271						| ATMEL_UART_DTR | ATMEL_UART_DSR
272						| ATMEL_UART_DCD | ATMEL_UART_RI);
273	stamp9g20_board_init();
274	/* USB Host */
275	at91_add_device_usbh(&usbh_data);
276	/* USB Device */
277	at91_add_device_udc(&stamp9g20evb_udc_data);
278	/* Ethernet */
279	at91_add_device_eth(&macb_data);
280	/* I2C */
281	at91_add_device_i2c(NULL, 0);
282	/* LEDs */
283	at91_gpio_leds(stamp9g20evb_leds, ARRAY_SIZE(stamp9g20evb_leds));
284}
285
286MACHINE_START(PORTUXG20, "taskit PortuxG20")
287	/* Maintainer: taskit GmbH */
288	.timer		= &at91sam926x_timer,
289	.map_io		= at91_map_io,
290	.init_early	= stamp9g20_init_early,
291	.init_irq	= at91_init_irq_default,
292	.init_machine	= portuxg20_board_init,
293MACHINE_END
294
295MACHINE_START(STAMP9G20, "taskit Stamp9G20")
296	/* Maintainer: taskit GmbH */
297	.timer		= &at91sam926x_timer,
298	.map_io		= at91_map_io,
299	.init_early	= stamp9g20_init_early,
300	.init_irq	= at91_init_irq_default,
301	.init_machine	= stamp9g20evb_board_init,
302MACHINE_END