1 /*
2 * Copyright (C) 2005 SAN People
3 * Copyright (C) 2008 Atmel
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/types.h>
21 #include <linux/gpio.h>
22 #include <linux/init.h>
23 #include <linux/mm.h>
24 #include <linux/module.h>
25 #include <linux/platform_device.h>
26 #include <linux/spi/spi.h>
27 #include <linux/spi/at73c213.h>
28 #include <linux/gpio_keys.h>
29 #include <linux/input.h>
30 #include <linux/clk.h>
31 #include <linux/regulator/machine.h>
32 #include <linux/regulator/fixed.h>
33 #include <linux/regulator/consumer.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/at91sam9_smc.h>
46 #include <mach/system_rev.h>
47
48 #include "sam9_smc.h"
49 #include "generic.h"
50
51 /*
52 * board revision encoding
53 * bit 0:
54 * 0 => 1 sd/mmc slot
55 * 1 => 2 sd/mmc slots connectors (board from revision C)
56 */
57 #define HAVE_2MMC (1 << 0)
ek_have_2mmc(void)58 static int inline ek_have_2mmc(void)
59 {
60 return machine_is_at91sam9g20ek_2mmc() || (system_rev & HAVE_2MMC);
61 }
62
63
ek_init_early(void)64 static void __init ek_init_early(void)
65 {
66 /* Initialize processor: 18.432 MHz crystal */
67 at91_initialize(18432000);
68
69 /* DBGU on ttyS0. (Rx & Tx only) */
70 at91_register_uart(0, 0, 0);
71
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);
76
77 /* USART1 on ttyS2. (Rx, Tx, RTS, CTS) */
78 at91_register_uart(AT91SAM9260_ID_US1, 2, ATMEL_UART_CTS | ATMEL_UART_RTS);
79
80 /* set serial console to ttyS0 (ie, DBGU) */
81 at91_set_serial_console(0);
82 }
83
84 /*
85 * USB Host port
86 */
87 static struct at91_usbh_data __initdata ek_usbh_data = {
88 .ports = 2,
89 .vbus_pin = {-EINVAL, -EINVAL},
90 .overcurrent_pin= {-EINVAL, -EINVAL},
91 };
92
93 /*
94 * USB Device port
95 */
96 static struct at91_udc_data __initdata ek_udc_data = {
97 .vbus_pin = AT91_PIN_PC5,
98 .pullup_pin = -EINVAL, /* pull-up driven by UDC */
99 };
100
101
102 /*
103 * SPI devices.
104 */
105 static struct spi_board_info ek_spi_devices[] = {
106 #if !(defined(CONFIG_MMC_ATMELMCI) || defined(CONFIG_MMC_AT91))
107 { /* DataFlash chip */
108 .modalias = "mtd_dataflash",
109 .chip_select = 1,
110 .max_speed_hz = 15 * 1000 * 1000,
111 .bus_num = 0,
112 },
113 #if defined(CONFIG_MTD_AT91_DATAFLASH_CARD)
114 { /* DataFlash card */
115 .modalias = "mtd_dataflash",
116 .chip_select = 0,
117 .max_speed_hz = 15 * 1000 * 1000,
118 .bus_num = 0,
119 },
120 #endif
121 #endif
122 };
123
124
125 /*
126 * MACB Ethernet device
127 */
128 static struct macb_platform_data __initdata ek_macb_data = {
129 .phy_irq_pin = AT91_PIN_PA7,
130 .is_rmii = 1,
131 };
132
ek_add_device_macb(void)133 static void __init ek_add_device_macb(void)
134 {
135 if (ek_have_2mmc())
136 ek_macb_data.phy_irq_pin = AT91_PIN_PB0;
137
138 at91_add_device_eth(&ek_macb_data);
139 }
140
141 /*
142 * NAND flash
143 */
144 static struct mtd_partition __initdata ek_nand_partition[] = {
145 {
146 .name = "Bootstrap",
147 .offset = 0,
148 .size = 4 * SZ_1M,
149 },
150 {
151 .name = "Partition 1",
152 .offset = MTDPART_OFS_NXTBLK,
153 .size = 60 * SZ_1M,
154 },
155 {
156 .name = "Partition 2",
157 .offset = MTDPART_OFS_NXTBLK,
158 .size = MTDPART_SIZ_FULL,
159 },
160 };
161
162 /* det_pin is not connected */
163 static struct atmel_nand_data __initdata ek_nand_data = {
164 .ale = 21,
165 .cle = 22,
166 .rdy_pin = AT91_PIN_PC13,
167 .enable_pin = AT91_PIN_PC14,
168 .det_pin = -EINVAL,
169 .parts = ek_nand_partition,
170 .num_parts = ARRAY_SIZE(ek_nand_partition),
171 };
172
173 static struct sam9_smc_config __initdata ek_nand_smc_config = {
174 .ncs_read_setup = 0,
175 .nrd_setup = 2,
176 .ncs_write_setup = 0,
177 .nwe_setup = 2,
178
179 .ncs_read_pulse = 4,
180 .nrd_pulse = 4,
181 .ncs_write_pulse = 4,
182 .nwe_pulse = 4,
183
184 .read_cycle = 7,
185 .write_cycle = 7,
186
187 .mode = AT91_SMC_READMODE | AT91_SMC_WRITEMODE | AT91_SMC_EXNWMODE_DISABLE,
188 .tdf_cycles = 3,
189 };
190
ek_add_device_nand(void)191 static void __init ek_add_device_nand(void)
192 {
193 ek_nand_data.bus_width_16 = board_have_nand_16bit();
194 /* setup bus-width (8 or 16) */
195 if (ek_nand_data.bus_width_16)
196 ek_nand_smc_config.mode |= AT91_SMC_DBW_16;
197 else
198 ek_nand_smc_config.mode |= AT91_SMC_DBW_8;
199
200 /* configure chip-select 3 (NAND) */
201 sam9_smc_configure(0, 3, &ek_nand_smc_config);
202
203 at91_add_device_nand(&ek_nand_data);
204 }
205
206
207 /*
208 * MCI (SD/MMC)
209 * wp_pin and vcc_pin are not connected
210 */
211 #if defined(CONFIG_MMC_ATMELMCI) || defined(CONFIG_MMC_ATMELMCI_MODULE)
212 static struct mci_platform_data __initdata ek_mmc_data = {
213 .slot[1] = {
214 .bus_width = 4,
215 .detect_pin = AT91_PIN_PC9,
216 .wp_pin = -EINVAL,
217 },
218
219 };
220 #else
221 static struct at91_mmc_data __initdata ek_mmc_data = {
222 .slot_b = 1, /* Only one slot so use slot B */
223 .wire4 = 1,
224 .det_pin = AT91_PIN_PC9,
225 .wp_pin = -EINVAL,
226 .vcc_pin = -EINVAL,
227 };
228 #endif
229
ek_add_device_mmc(void)230 static void __init ek_add_device_mmc(void)
231 {
232 #if defined(CONFIG_MMC_ATMELMCI) || defined(CONFIG_MMC_ATMELMCI_MODULE)
233 if (ek_have_2mmc()) {
234 ek_mmc_data.slot[0].bus_width = 4;
235 ek_mmc_data.slot[0].detect_pin = AT91_PIN_PC2;
236 ek_mmc_data.slot[0].wp_pin = -1;
237 }
238 at91_add_device_mci(0, &ek_mmc_data);
239 #else
240 at91_add_device_mmc(0, &ek_mmc_data);
241 #endif
242 }
243
244 /*
245 * LEDs
246 */
247 static struct gpio_led ek_leds[] = {
248 { /* "bottom" led, green, userled1 to be defined */
249 .name = "ds5",
250 .gpio = AT91_PIN_PA6,
251 .active_low = 1,
252 .default_trigger = "none",
253 },
254 { /* "power" led, yellow */
255 .name = "ds1",
256 .gpio = AT91_PIN_PA9,
257 .default_trigger = "heartbeat",
258 }
259 };
260
ek_add_device_gpio_leds(void)261 static void __init ek_add_device_gpio_leds(void)
262 {
263 if (ek_have_2mmc()) {
264 ek_leds[0].gpio = AT91_PIN_PB8;
265 ek_leds[1].gpio = AT91_PIN_PB9;
266 }
267
268 at91_gpio_leds(ek_leds, ARRAY_SIZE(ek_leds));
269 }
270
271 /*
272 * GPIO Buttons
273 */
274 #if defined(CONFIG_KEYBOARD_GPIO) || defined(CONFIG_KEYBOARD_GPIO_MODULE)
275 static struct gpio_keys_button ek_buttons[] = {
276 {
277 .gpio = AT91_PIN_PA30,
278 .code = BTN_3,
279 .desc = "Button 3",
280 .active_low = 1,
281 .wakeup = 1,
282 },
283 {
284 .gpio = AT91_PIN_PA31,
285 .code = BTN_4,
286 .desc = "Button 4",
287 .active_low = 1,
288 .wakeup = 1,
289 }
290 };
291
292 static struct gpio_keys_platform_data ek_button_data = {
293 .buttons = ek_buttons,
294 .nbuttons = ARRAY_SIZE(ek_buttons),
295 };
296
297 static struct platform_device ek_button_device = {
298 .name = "gpio-keys",
299 .id = -1,
300 .num_resources = 0,
301 .dev = {
302 .platform_data = &ek_button_data,
303 }
304 };
305
ek_add_device_buttons(void)306 static void __init ek_add_device_buttons(void)
307 {
308 at91_set_gpio_input(AT91_PIN_PA30, 1); /* btn3 */
309 at91_set_deglitch(AT91_PIN_PA30, 1);
310 at91_set_gpio_input(AT91_PIN_PA31, 1); /* btn4 */
311 at91_set_deglitch(AT91_PIN_PA31, 1);
312
313 platform_device_register(&ek_button_device);
314 }
315 #else
ek_add_device_buttons(void)316 static void __init ek_add_device_buttons(void) {}
317 #endif
318
319 #if defined(CONFIG_REGULATOR_FIXED_VOLTAGE) || defined(CONFIG_REGULATOR_FIXED_VOLTAGE_MODULE)
320 static struct regulator_consumer_supply ek_audio_consumer_supplies[] = {
321 REGULATOR_SUPPLY("AVDD", "0-001b"),
322 REGULATOR_SUPPLY("HPVDD", "0-001b"),
323 REGULATOR_SUPPLY("DBVDD", "0-001b"),
324 REGULATOR_SUPPLY("DCVDD", "0-001b"),
325 };
326
327 static struct regulator_init_data ek_avdd_reg_init_data = {
328 .constraints = {
329 .name = "3V3",
330 .valid_ops_mask = REGULATOR_CHANGE_STATUS,
331 },
332 .consumer_supplies = ek_audio_consumer_supplies,
333 .num_consumer_supplies = ARRAY_SIZE(ek_audio_consumer_supplies),
334 };
335
336 static struct fixed_voltage_config ek_vdd_pdata = {
337 .supply_name = "board-3V3",
338 .microvolts = 3300000,
339 .gpio = -EINVAL,
340 .enabled_at_boot = 0,
341 .init_data = &ek_avdd_reg_init_data,
342 };
343 static struct platform_device ek_voltage_regulator = {
344 .name = "reg-fixed-voltage",
345 .id = -1,
346 .num_resources = 0,
347 .dev = {
348 .platform_data = &ek_vdd_pdata,
349 },
350 };
ek_add_regulators(void)351 static void __init ek_add_regulators(void)
352 {
353 platform_device_register(&ek_voltage_regulator);
354 }
355 #else
ek_add_regulators(void)356 static void __init ek_add_regulators(void) {}
357 #endif
358
359
360 static struct i2c_board_info __initdata ek_i2c_devices[] = {
361 {
362 I2C_BOARD_INFO("24c512", 0x50)
363 },
364 {
365 I2C_BOARD_INFO("wm8731", 0x1b)
366 },
367 };
368
369
ek_board_init(void)370 static void __init ek_board_init(void)
371 {
372 /* Serial */
373 at91_add_device_serial();
374 /* USB Host */
375 at91_add_device_usbh(&ek_usbh_data);
376 /* USB Device */
377 at91_add_device_udc(&ek_udc_data);
378 /* SPI */
379 at91_add_device_spi(ek_spi_devices, ARRAY_SIZE(ek_spi_devices));
380 /* NAND */
381 ek_add_device_nand();
382 /* Ethernet */
383 ek_add_device_macb();
384 /* Regulators */
385 ek_add_regulators();
386 /* MMC */
387 ek_add_device_mmc();
388 /* I2C */
389 at91_add_device_i2c(ek_i2c_devices, ARRAY_SIZE(ek_i2c_devices));
390 /* LEDs */
391 ek_add_device_gpio_leds();
392 /* Push Buttons */
393 ek_add_device_buttons();
394 /* PCK0 provides MCLK to the WM8731 */
395 at91_set_B_periph(AT91_PIN_PC1, 0);
396 /* SSC (for WM8731) */
397 at91_add_device_ssc(AT91SAM9260_ID_SSC, ATMEL_SSC_TX);
398 }
399
400 MACHINE_START(AT91SAM9G20EK, "Atmel AT91SAM9G20-EK")
401 /* Maintainer: Atmel */
402 .timer = &at91sam926x_timer,
403 .map_io = at91_map_io,
404 .init_early = ek_init_early,
405 .init_irq = at91_init_irq_default,
406 .init_machine = ek_board_init,
407 MACHINE_END
408
409 MACHINE_START(AT91SAM9G20EK_2MMC, "Atmel AT91SAM9G20-EK 2 MMC Slot Mod")
410 /* Maintainer: Atmel */
411 .timer = &at91sam926x_timer,
412 .map_io = at91_map_io,
413 .init_early = ek_init_early,
414 .init_irq = at91_init_irq_default,
415 .init_machine = ek_board_init,
416 MACHINE_END
417