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[linux-2.6/next.git] / arch / arm / mach-at91 / board-sam9g20ek.c
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1 /*
2 * Copyright (C) 2005 SAN People
3 * Copyright (C) 2008 Atmel
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.
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.
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
20 #include <linux/types.h>
21 #include <linux/init.h>
22 #include <linux/mm.h>
23 #include <linux/module.h>
24 #include <linux/platform_device.h>
25 #include <linux/spi/spi.h>
26 #include <linux/spi/at73c213.h>
27 #include <linux/gpio_keys.h>
28 #include <linux/input.h>
29 #include <linux/clk.h>
30 #include <linux/regulator/machine.h>
31 #include <linux/regulator/fixed.h>
32 #include <linux/regulator/consumer.h>
34 #include <mach/hardware.h>
35 #include <asm/setup.h>
36 #include <asm/mach-types.h>
37 #include <asm/irq.h>
39 #include <asm/mach/arch.h>
40 #include <asm/mach/map.h>
41 #include <asm/mach/irq.h>
43 #include <mach/board.h>
44 #include <mach/gpio.h>
45 #include <mach/at91sam9_smc.h>
46 #include <mach/system_rev.h>
48 #include "sam9_smc.h"
49 #include "generic.h"
52 * board revision encoding
53 * bit 0:
54 * 0 => 1 sd/mmc slot
55 * 1 => 2 sd/mmc slots connectors (board from revision C)
57 #define HAVE_2MMC (1 << 0)
58 static int inline ek_have_2mmc(void)
60 return machine_is_at91sam9g20ek_2mmc() || (system_rev & HAVE_2MMC);
64 static void __init ek_init_early(void)
66 /* Initialize processor: 18.432 MHz crystal */
67 at91sam9260_initialize(18432000);
69 /* DBGU on ttyS0. (Rx & Tx only) */
70 at91_register_uart(0, 0, 0);
72 /* USART0 on ttyS1. (Rx, Tx, CTS, RTS, DTR, DSR, DCD, RI) */
73 at91_register_uart(AT91SAM9260_ID_US0, 1, ATMEL_UART_CTS | ATMEL_UART_RTS
74 | ATMEL_UART_DTR | ATMEL_UART_DSR | ATMEL_UART_DCD
75 | ATMEL_UART_RI);
77 /* USART1 on ttyS2. (Rx, Tx, RTS, CTS) */
78 at91_register_uart(AT91SAM9260_ID_US1, 2, ATMEL_UART_CTS | ATMEL_UART_RTS);
80 /* set serial console to ttyS0 (ie, DBGU) */
81 at91_set_serial_console(0);
84 static void __init ek_init_irq(void)
86 at91sam9260_init_interrupts(NULL);
91 * USB Host port
93 static struct at91_usbh_data __initdata ek_usbh_data = {
94 .ports = 2,
98 * USB Device port
100 static struct at91_udc_data __initdata ek_udc_data = {
101 .vbus_pin = AT91_PIN_PC5,
102 .pullup_pin = 0, /* pull-up driven by UDC */
107 * SPI devices.
109 static struct spi_board_info ek_spi_devices[] = {
110 #if !(defined(CONFIG_MMC_ATMELMCI) || defined(CONFIG_MMC_AT91))
111 { /* DataFlash chip */
112 .modalias = "mtd_dataflash",
113 .chip_select = 1,
114 .max_speed_hz = 15 * 1000 * 1000,
115 .bus_num = 0,
117 #if defined(CONFIG_MTD_AT91_DATAFLASH_CARD)
118 { /* DataFlash card */
119 .modalias = "mtd_dataflash",
120 .chip_select = 0,
121 .max_speed_hz = 15 * 1000 * 1000,
122 .bus_num = 0,
124 #endif
125 #endif
130 * MACB Ethernet device
132 static struct at91_eth_data __initdata ek_macb_data = {
133 .phy_irq_pin = AT91_PIN_PA7,
134 .is_rmii = 1,
137 static void __init ek_add_device_macb(void)
139 if (ek_have_2mmc())
140 ek_macb_data.phy_irq_pin = AT91_PIN_PB0;
142 at91_add_device_eth(&ek_macb_data);
146 * NAND flash
148 static struct mtd_partition __initdata ek_nand_partition[] = {
150 .name = "Bootstrap",
151 .offset = 0,
152 .size = 4 * SZ_1M,
155 .name = "Partition 1",
156 .offset = MTDPART_OFS_NXTBLK,
157 .size = 60 * SZ_1M,
160 .name = "Partition 2",
161 .offset = MTDPART_OFS_NXTBLK,
162 .size = MTDPART_SIZ_FULL,
166 static struct mtd_partition * __init nand_partitions(int size, int *num_partitions)
168 *num_partitions = ARRAY_SIZE(ek_nand_partition);
169 return ek_nand_partition;
172 /* det_pin is not connected */
173 static struct atmel_nand_data __initdata ek_nand_data = {
174 .ale = 21,
175 .cle = 22,
176 .rdy_pin = AT91_PIN_PC13,
177 .enable_pin = AT91_PIN_PC14,
178 .partition_info = nand_partitions,
181 static struct sam9_smc_config __initdata ek_nand_smc_config = {
182 .ncs_read_setup = 0,
183 .nrd_setup = 2,
184 .ncs_write_setup = 0,
185 .nwe_setup = 2,
187 .ncs_read_pulse = 4,
188 .nrd_pulse = 4,
189 .ncs_write_pulse = 4,
190 .nwe_pulse = 4,
192 .read_cycle = 7,
193 .write_cycle = 7,
195 .mode = AT91_SMC_READMODE | AT91_SMC_WRITEMODE | AT91_SMC_EXNWMODE_DISABLE,
196 .tdf_cycles = 3,
199 static void __init ek_add_device_nand(void)
201 ek_nand_data.bus_width_16 = !board_have_nand_8bit();
202 /* setup bus-width (8 or 16) */
203 if (ek_nand_data.bus_width_16)
204 ek_nand_smc_config.mode |= AT91_SMC_DBW_16;
205 else
206 ek_nand_smc_config.mode |= AT91_SMC_DBW_8;
208 /* configure chip-select 3 (NAND) */
209 sam9_smc_configure(3, &ek_nand_smc_config);
211 at91_add_device_nand(&ek_nand_data);
216 * MCI (SD/MMC)
217 * wp_pin and vcc_pin are not connected
219 #if defined(CONFIG_MMC_ATMELMCI) || defined(CONFIG_MMC_ATMELMCI_MODULE)
220 static struct mci_platform_data __initdata ek_mmc_data = {
221 .slot[1] = {
222 .bus_width = 4,
223 .detect_pin = AT91_PIN_PC9,
227 #else
228 static struct at91_mmc_data __initdata ek_mmc_data = {
229 .slot_b = 1, /* Only one slot so use slot B */
230 .wire4 = 1,
231 .det_pin = AT91_PIN_PC9,
233 #endif
235 static void __init ek_add_device_mmc(void)
237 #if defined(CONFIG_MMC_ATMELMCI) || defined(CONFIG_MMC_ATMELMCI_MODULE)
238 if (ek_have_2mmc()) {
239 ek_mmc_data.slot[0].bus_width = 4;
240 ek_mmc_data.slot[0].detect_pin = AT91_PIN_PC2;
242 at91_add_device_mci(0, &ek_mmc_data);
243 #else
244 at91_add_device_mmc(0, &ek_mmc_data);
245 #endif
249 * LEDs
251 static struct gpio_led ek_leds[] = {
252 { /* "bottom" led, green, userled1 to be defined */
253 .name = "ds5",
254 .gpio = AT91_PIN_PA6,
255 .active_low = 1,
256 .default_trigger = "none",
258 { /* "power" led, yellow */
259 .name = "ds1",
260 .gpio = AT91_PIN_PA9,
261 .default_trigger = "heartbeat",
265 static void __init ek_add_device_gpio_leds(void)
267 if (ek_have_2mmc()) {
268 ek_leds[0].gpio = AT91_PIN_PB8;
269 ek_leds[1].gpio = AT91_PIN_PB9;
272 at91_gpio_leds(ek_leds, ARRAY_SIZE(ek_leds));
276 * GPIO Buttons
278 #if defined(CONFIG_KEYBOARD_GPIO) || defined(CONFIG_KEYBOARD_GPIO_MODULE)
279 static struct gpio_keys_button ek_buttons[] = {
281 .gpio = AT91_PIN_PA30,
282 .code = BTN_3,
283 .desc = "Button 3",
284 .active_low = 1,
285 .wakeup = 1,
288 .gpio = AT91_PIN_PA31,
289 .code = BTN_4,
290 .desc = "Button 4",
291 .active_low = 1,
292 .wakeup = 1,
296 static struct gpio_keys_platform_data ek_button_data = {
297 .buttons = ek_buttons,
298 .nbuttons = ARRAY_SIZE(ek_buttons),
301 static struct platform_device ek_button_device = {
302 .name = "gpio-keys",
303 .id = -1,
304 .num_resources = 0,
305 .dev = {
306 .platform_data = &ek_button_data,
310 static void __init ek_add_device_buttons(void)
312 at91_set_gpio_input(AT91_PIN_PA30, 1); /* btn3 */
313 at91_set_deglitch(AT91_PIN_PA30, 1);
314 at91_set_gpio_input(AT91_PIN_PA31, 1); /* btn4 */
315 at91_set_deglitch(AT91_PIN_PA31, 1);
317 platform_device_register(&ek_button_device);
319 #else
320 static void __init ek_add_device_buttons(void) {}
321 #endif
323 #if defined(CONFIG_REGULATOR_FIXED_VOLTAGE) || defined(CONFIG_REGULATOR_FIXED_VOLTAGE_MODULE)
324 static struct regulator_consumer_supply ek_audio_consumer_supplies[] = {
325 REGULATOR_SUPPLY("AVDD", "0-001b"),
326 REGULATOR_SUPPLY("HPVDD", "0-001b"),
327 REGULATOR_SUPPLY("DBVDD", "0-001b"),
328 REGULATOR_SUPPLY("DCVDD", "0-001b"),
331 static struct regulator_init_data ek_avdd_reg_init_data = {
332 .constraints = {
333 .name = "3V3",
334 .valid_ops_mask = REGULATOR_CHANGE_STATUS,
336 .consumer_supplies = ek_audio_consumer_supplies,
337 .num_consumer_supplies = ARRAY_SIZE(ek_audio_consumer_supplies),
340 static struct fixed_voltage_config ek_vdd_pdata = {
341 .supply_name = "board-3V3",
342 .microvolts = 3300000,
343 .gpio = -EINVAL,
344 .enabled_at_boot = 0,
345 .init_data = &ek_avdd_reg_init_data,
347 static struct platform_device ek_voltage_regulator = {
348 .name = "reg-fixed-voltage",
349 .id = -1,
350 .num_resources = 0,
351 .dev = {
352 .platform_data = &ek_vdd_pdata,
355 static void __init ek_add_regulators(void)
357 platform_device_register(&ek_voltage_regulator);
359 #else
360 static void __init ek_add_regulators(void) {}
361 #endif
364 static struct i2c_board_info __initdata ek_i2c_devices[] = {
366 I2C_BOARD_INFO("24c512", 0x50)
369 I2C_BOARD_INFO("wm8731", 0x1b)
374 static void __init ek_board_init(void)
376 /* Serial */
377 at91_add_device_serial();
378 /* USB Host */
379 at91_add_device_usbh(&ek_usbh_data);
380 /* USB Device */
381 at91_add_device_udc(&ek_udc_data);
382 /* SPI */
383 at91_add_device_spi(ek_spi_devices, ARRAY_SIZE(ek_spi_devices));
384 /* NAND */
385 ek_add_device_nand();
386 /* Ethernet */
387 ek_add_device_macb();
388 /* Regulators */
389 ek_add_regulators();
390 /* MMC */
391 ek_add_device_mmc();
392 /* I2C */
393 at91_add_device_i2c(ek_i2c_devices, ARRAY_SIZE(ek_i2c_devices));
394 /* LEDs */
395 ek_add_device_gpio_leds();
396 /* Push Buttons */
397 ek_add_device_buttons();
398 /* PCK0 provides MCLK to the WM8731 */
399 at91_set_B_periph(AT91_PIN_PC1, 0);
400 /* SSC (for WM8731) */
401 at91_add_device_ssc(AT91SAM9260_ID_SSC, ATMEL_SSC_TX);
404 MACHINE_START(AT91SAM9G20EK, "Atmel AT91SAM9G20-EK")
405 /* Maintainer: Atmel */
406 .timer = &at91sam926x_timer,
407 .map_io = at91sam9260_map_io,
408 .init_early = ek_init_early,
409 .init_irq = ek_init_irq,
410 .init_machine = ek_board_init,
411 MACHINE_END
413 MACHINE_START(AT91SAM9G20EK_2MMC, "Atmel AT91SAM9G20-EK 2 MMC Slot Mod")
414 /* Maintainer: Atmel */
415 .timer = &at91sam926x_timer,
416 .map_io = at91sam9260_map_io,
417 .init_early = ek_init_early,
418 .init_irq = ek_init_irq,
419 .init_machine = ek_board_init,
420 MACHINE_END