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 <linux/platform_data/at91_adc.h>
36
37 #include <mach/hardware.h>
38 #include <asm/setup.h>
39 #include <asm/mach-types.h>
40 #include <asm/irq.h>
41
42 #include <asm/mach/arch.h>
43 #include <asm/mach/map.h>
44 #include <asm/mach/irq.h>
45
46 #include <mach/at91sam9_smc.h>
47 #include <mach/system_rev.h>
48
49 #include "at91_aic.h"
50 #include "board.h"
51 #include "sam9_smc.h"
52 #include "generic.h"
53 #include "gpio.h"
54
55 /*
56 * board revision encoding
57 * bit 0:
58 * 0 => 1 sd/mmc slot
59 * 1 => 2 sd/mmc slots connectors (board from revision C)
60 */
61 #define HAVE_2MMC (1 << 0)
ek_have_2mmc(void)62 static int inline ek_have_2mmc(void)
63 {
64 return machine_is_at91sam9g20ek_2mmc() || (system_rev & HAVE_2MMC);
65 }
66
67
ek_init_early(void)68 static void __init ek_init_early(void)
69 {
70 /* Initialize processor: 18.432 MHz crystal */
71 at91_initialize(18432000);
72 }
73
74 /*
75 * USB Host port
76 */
77 static struct at91_usbh_data __initdata ek_usbh_data = {
78 .ports = 2,
79 .vbus_pin = {-EINVAL, -EINVAL},
80 .overcurrent_pin= {-EINVAL, -EINVAL},
81 };
82
83 /*
84 * USB Device port
85 */
86 static struct at91_udc_data __initdata ek_udc_data = {
87 .vbus_pin = AT91_PIN_PC5,
88 .pullup_pin = -EINVAL, /* pull-up driven by UDC */
89 };
90
91
92 /*
93 * SPI devices.
94 */
95 static struct spi_board_info ek_spi_devices[] = {
96 #if !IS_ENABLED(CONFIG_MMC_ATMELMCI)
97 { /* DataFlash chip */
98 .modalias = "mtd_dataflash",
99 .chip_select = 1,
100 .max_speed_hz = 15 * 1000 * 1000,
101 .bus_num = 0,
102 },
103 #if defined(CONFIG_MTD_AT91_DATAFLASH_CARD)
104 { /* DataFlash card */
105 .modalias = "mtd_dataflash",
106 .chip_select = 0,
107 .max_speed_hz = 15 * 1000 * 1000,
108 .bus_num = 0,
109 },
110 #endif
111 #endif
112 };
113
114
115 /*
116 * MACB Ethernet device
117 */
118 static struct macb_platform_data __initdata ek_macb_data = {
119 .phy_irq_pin = AT91_PIN_PA7,
120 .is_rmii = 1,
121 };
122
ek_add_device_macb(void)123 static void __init ek_add_device_macb(void)
124 {
125 if (ek_have_2mmc())
126 ek_macb_data.phy_irq_pin = AT91_PIN_PB0;
127
128 at91_add_device_eth(&ek_macb_data);
129 }
130
131 /*
132 * NAND flash
133 */
134 static struct mtd_partition __initdata ek_nand_partition[] = {
135 {
136 .name = "Bootstrap",
137 .offset = 0,
138 .size = 4 * SZ_1M,
139 },
140 {
141 .name = "Partition 1",
142 .offset = MTDPART_OFS_NXTBLK,
143 .size = 60 * SZ_1M,
144 },
145 {
146 .name = "Partition 2",
147 .offset = MTDPART_OFS_NXTBLK,
148 .size = MTDPART_SIZ_FULL,
149 },
150 };
151
152 /* det_pin is not connected */
153 static struct atmel_nand_data __initdata ek_nand_data = {
154 .ale = 21,
155 .cle = 22,
156 .rdy_pin = AT91_PIN_PC13,
157 .enable_pin = AT91_PIN_PC14,
158 .det_pin = -EINVAL,
159 .ecc_mode = NAND_ECC_SOFT,
160 .on_flash_bbt = 1,
161 .parts = ek_nand_partition,
162 .num_parts = ARRAY_SIZE(ek_nand_partition),
163 };
164
165 static struct sam9_smc_config __initdata ek_nand_smc_config = {
166 .ncs_read_setup = 0,
167 .nrd_setup = 2,
168 .ncs_write_setup = 0,
169 .nwe_setup = 2,
170
171 .ncs_read_pulse = 4,
172 .nrd_pulse = 4,
173 .ncs_write_pulse = 4,
174 .nwe_pulse = 4,
175
176 .read_cycle = 7,
177 .write_cycle = 7,
178
179 .mode = AT91_SMC_READMODE | AT91_SMC_WRITEMODE | AT91_SMC_EXNWMODE_DISABLE,
180 .tdf_cycles = 3,
181 };
182
ek_add_device_nand(void)183 static void __init ek_add_device_nand(void)
184 {
185 ek_nand_data.bus_width_16 = board_have_nand_16bit();
186 /* setup bus-width (8 or 16) */
187 if (ek_nand_data.bus_width_16)
188 ek_nand_smc_config.mode |= AT91_SMC_DBW_16;
189 else
190 ek_nand_smc_config.mode |= AT91_SMC_DBW_8;
191
192 /* configure chip-select 3 (NAND) */
193 sam9_smc_configure(0, 3, &ek_nand_smc_config);
194
195 at91_add_device_nand(&ek_nand_data);
196 }
197
198
199 /*
200 * MCI (SD/MMC)
201 * wp_pin and vcc_pin are not connected
202 */
203 static struct mci_platform_data __initdata ek_mmc_data = {
204 .slot[1] = {
205 .bus_width = 4,
206 .detect_pin = AT91_PIN_PC9,
207 .wp_pin = -EINVAL,
208 },
209
210 };
211
ek_add_device_mmc(void)212 static void __init ek_add_device_mmc(void)
213 {
214 if (ek_have_2mmc()) {
215 ek_mmc_data.slot[0].bus_width = 4;
216 ek_mmc_data.slot[0].detect_pin = AT91_PIN_PC2;
217 ek_mmc_data.slot[0].wp_pin = -1;
218 }
219 at91_add_device_mci(0, &ek_mmc_data);
220 }
221
222 /*
223 * LEDs
224 */
225 static struct gpio_led ek_leds[] = {
226 { /* "bottom" led, green, userled1 to be defined */
227 .name = "ds5",
228 .gpio = AT91_PIN_PA6,
229 .active_low = 1,
230 .default_trigger = "none",
231 },
232 { /* "power" led, yellow */
233 .name = "ds1",
234 .gpio = AT91_PIN_PA9,
235 .default_trigger = "heartbeat",
236 }
237 };
238
ek_add_device_gpio_leds(void)239 static void __init ek_add_device_gpio_leds(void)
240 {
241 if (ek_have_2mmc()) {
242 ek_leds[0].gpio = AT91_PIN_PB8;
243 ek_leds[1].gpio = AT91_PIN_PB9;
244 }
245
246 at91_gpio_leds(ek_leds, ARRAY_SIZE(ek_leds));
247 }
248
249 /*
250 * GPIO Buttons
251 */
252 #if defined(CONFIG_KEYBOARD_GPIO) || defined(CONFIG_KEYBOARD_GPIO_MODULE)
253 static struct gpio_keys_button ek_buttons[] = {
254 {
255 .gpio = AT91_PIN_PA30,
256 .code = BTN_3,
257 .desc = "Button 3",
258 .active_low = 1,
259 .wakeup = 1,
260 },
261 {
262 .gpio = AT91_PIN_PA31,
263 .code = BTN_4,
264 .desc = "Button 4",
265 .active_low = 1,
266 .wakeup = 1,
267 }
268 };
269
270 static struct gpio_keys_platform_data ek_button_data = {
271 .buttons = ek_buttons,
272 .nbuttons = ARRAY_SIZE(ek_buttons),
273 };
274
275 static struct platform_device ek_button_device = {
276 .name = "gpio-keys",
277 .id = -1,
278 .num_resources = 0,
279 .dev = {
280 .platform_data = &ek_button_data,
281 }
282 };
283
ek_add_device_buttons(void)284 static void __init ek_add_device_buttons(void)
285 {
286 at91_set_gpio_input(AT91_PIN_PA30, 1); /* btn3 */
287 at91_set_deglitch(AT91_PIN_PA30, 1);
288 at91_set_gpio_input(AT91_PIN_PA31, 1); /* btn4 */
289 at91_set_deglitch(AT91_PIN_PA31, 1);
290
291 platform_device_register(&ek_button_device);
292 }
293 #else
ek_add_device_buttons(void)294 static void __init ek_add_device_buttons(void) {}
295 #endif
296
297 /*
298 * ADCs
299 */
300
301 static struct at91_adc_data ek_adc_data = {
302 .channels_used = BIT(0) | BIT(1) | BIT(2) | BIT(3),
303 .use_external_triggers = true,
304 .vref = 3300,
305 };
306
307 #if defined(CONFIG_REGULATOR_FIXED_VOLTAGE) || defined(CONFIG_REGULATOR_FIXED_VOLTAGE_MODULE)
308 static struct regulator_consumer_supply ek_audio_consumer_supplies[] = {
309 REGULATOR_SUPPLY("AVDD", "0-001b"),
310 REGULATOR_SUPPLY("HPVDD", "0-001b"),
311 REGULATOR_SUPPLY("DBVDD", "0-001b"),
312 REGULATOR_SUPPLY("DCVDD", "0-001b"),
313 };
314
315 static struct regulator_init_data ek_avdd_reg_init_data = {
316 .constraints = {
317 .name = "3V3",
318 .valid_ops_mask = REGULATOR_CHANGE_STATUS,
319 },
320 .consumer_supplies = ek_audio_consumer_supplies,
321 .num_consumer_supplies = ARRAY_SIZE(ek_audio_consumer_supplies),
322 };
323
324 static struct fixed_voltage_config ek_vdd_pdata = {
325 .supply_name = "board-3V3",
326 .microvolts = 3300000,
327 .gpio = -EINVAL,
328 .enabled_at_boot = 0,
329 .init_data = &ek_avdd_reg_init_data,
330 };
331 static struct platform_device ek_voltage_regulator = {
332 .name = "reg-fixed-voltage",
333 .id = -1,
334 .num_resources = 0,
335 .dev = {
336 .platform_data = &ek_vdd_pdata,
337 },
338 };
ek_add_regulators(void)339 static void __init ek_add_regulators(void)
340 {
341 platform_device_register(&ek_voltage_regulator);
342 }
343 #else
ek_add_regulators(void)344 static void __init ek_add_regulators(void) {}
345 #endif
346
347
348 static struct i2c_board_info __initdata ek_i2c_devices[] = {
349 {
350 I2C_BOARD_INFO("24c512", 0x50)
351 },
352 {
353 I2C_BOARD_INFO("wm8731", 0x1b)
354 },
355 };
356
357 static struct platform_device sam9g20ek_audio_device = {
358 .name = "at91sam9g20ek-audio",
359 .id = -1,
360 };
361
ek_add_device_audio(void)362 static void __init ek_add_device_audio(void)
363 {
364 platform_device_register(&sam9g20ek_audio_device);
365 }
366
367
ek_board_init(void)368 static void __init ek_board_init(void)
369 {
370 /* Serial */
371 /* DBGU on ttyS0. (Rx & Tx only) */
372 at91_register_uart(0, 0, 0);
373
374 /* USART0 on ttyS1. (Rx, Tx, CTS, RTS, DTR, DSR, DCD, RI) */
375 at91_register_uart(AT91SAM9260_ID_US0, 1, ATMEL_UART_CTS | ATMEL_UART_RTS
376 | ATMEL_UART_DTR | ATMEL_UART_DSR | ATMEL_UART_DCD
377 | ATMEL_UART_RI);
378
379 /* USART1 on ttyS2. (Rx, Tx, RTS, CTS) */
380 at91_register_uart(AT91SAM9260_ID_US1, 2, ATMEL_UART_CTS | ATMEL_UART_RTS);
381 at91_add_device_serial();
382 /* USB Host */
383 at91_add_device_usbh(&ek_usbh_data);
384 /* USB Device */
385 at91_add_device_udc(&ek_udc_data);
386 /* SPI */
387 at91_add_device_spi(ek_spi_devices, ARRAY_SIZE(ek_spi_devices));
388 /* NAND */
389 ek_add_device_nand();
390 /* Ethernet */
391 ek_add_device_macb();
392 /* Regulators */
393 ek_add_regulators();
394 /* MMC */
395 ek_add_device_mmc();
396 /* I2C */
397 at91_add_device_i2c(ek_i2c_devices, ARRAY_SIZE(ek_i2c_devices));
398 /* LEDs */
399 ek_add_device_gpio_leds();
400 /* Push Buttons */
401 ek_add_device_buttons();
402 /* ADCs */
403 at91_add_device_adc(&ek_adc_data);
404 /* PCK0 provides MCLK to the WM8731 */
405 at91_set_B_periph(AT91_PIN_PC1, 0);
406 /* SSC (for WM8731) */
407 at91_add_device_ssc(AT91SAM9260_ID_SSC, ATMEL_SSC_TX);
408 ek_add_device_audio();
409 }
410
411 MACHINE_START(AT91SAM9G20EK, "Atmel AT91SAM9G20-EK")
412 /* Maintainer: Atmel */
413 .init_time = at91_init_time,
414 .map_io = at91_map_io,
415 .handle_irq = at91_aic_handle_irq,
416 .init_early = ek_init_early,
417 .init_irq = at91_init_irq_default,
418 .init_machine = ek_board_init,
419 MACHINE_END
420
421 MACHINE_START(AT91SAM9G20EK_2MMC, "Atmel AT91SAM9G20-EK 2 MMC Slot Mod")
422 /* Maintainer: Atmel */
423 .init_time = at91_init_time,
424 .map_io = at91_map_io,
425 .handle_irq = at91_aic_handle_irq,
426 .init_early = ek_init_early,
427 .init_irq = at91_init_irq_default,
428 .init_machine = ek_board_init,
429 MACHINE_END
430