1 /*
2 * linux/arch/arm/mach-at91/board-usb-a926x.c
3 *
4 * Copyright (C) 2005 SAN People
5 * Copyright (C) 2007 Atmel Corporation.
6 * Copyright (C) 2007 Calao-systems
7 * Copyright (C) 2011 Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
8 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
13 *
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
22 */
23
24 #include <linux/types.h>
25 #include <linux/init.h>
26 #include <linux/mm.h>
27 #include <linux/module.h>
28 #include <linux/platform_device.h>
29 #include <linux/spi/spi.h>
30 #include <linux/gpio_keys.h>
31 #include <linux/gpio.h>
32 #include <linux/input.h>
33 #include <linux/spi/mmc_spi.h>
34
35 #include <asm/setup.h>
36 #include <asm/mach-types.h>
37 #include <asm/irq.h>
38
39 #include <asm/mach/arch.h>
40 #include <asm/mach/map.h>
41 #include <asm/mach/irq.h>
42
43 #include <mach/hardware.h>
44 #include <mach/board.h>
45 #include <mach/at91sam9_smc.h>
46 #include <mach/at91_shdwc.h>
47
48 #include "sam9_smc.h"
49 #include "generic.h"
50
51
ek_init_early(void)52 static void __init ek_init_early(void)
53 {
54 /* Initialize processor: 12.00 MHz crystal */
55 at91_initialize(12000000);
56
57 /* DBGU on ttyS0. (Rx & Tx only) */
58 at91_register_uart(0, 0, 0);
59
60 /* set serial console to ttyS0 (ie, DBGU) */
61 at91_set_serial_console(0);
62 }
63
64 /*
65 * USB Host port
66 */
67 static struct at91_usbh_data __initdata ek_usbh_data = {
68 .ports = 2,
69 .vbus_pin = {-EINVAL, -EINVAL},
70 .overcurrent_pin= {-EINVAL, -EINVAL},
71 };
72
73 /*
74 * USB Device port
75 */
76 static struct at91_udc_data __initdata ek_udc_data = {
77 .vbus_pin = AT91_PIN_PB11,
78 .pullup_pin = -EINVAL, /* pull-up driven by UDC */
79 };
80
ek_add_device_udc(void)81 static void __init ek_add_device_udc(void)
82 {
83 if (machine_is_usb_a9260() || machine_is_usb_a9g20())
84 ek_udc_data.vbus_pin = AT91_PIN_PC5;
85
86 at91_add_device_udc(&ek_udc_data);
87 }
88
89 #if defined(CONFIG_MMC_SPI) || defined(CONFIG_MMC_SPI_MODULE)
90 #define MMC_SPI_CARD_DETECT_INT AT91_PIN_PC4
at91_mmc_spi_init(struct device * dev,irqreturn_t (* detect_int)(int,void *),void * data)91 static int at91_mmc_spi_init(struct device *dev,
92 irqreturn_t (*detect_int)(int, void *), void *data)
93 {
94 /* Configure Interrupt pin as input, no pull-up */
95 at91_set_gpio_input(MMC_SPI_CARD_DETECT_INT, 0);
96 return request_irq(gpio_to_irq(MMC_SPI_CARD_DETECT_INT), detect_int,
97 IRQF_TRIGGER_FALLING | IRQF_TRIGGER_RISING,
98 "mmc-spi-detect", data);
99 }
100
at91_mmc_spi_exit(struct device * dev,void * data)101 static void at91_mmc_spi_exit(struct device *dev, void *data)
102 {
103 free_irq(gpio_to_irq(MMC_SPI_CARD_DETECT_INT), data);
104 }
105
106 static struct mmc_spi_platform_data at91_mmc_spi_pdata = {
107 .init = at91_mmc_spi_init,
108 .exit = at91_mmc_spi_exit,
109 .detect_delay = 100, /* msecs */
110 };
111 #endif
112
113 /*
114 * SPI devices.
115 */
116 static struct spi_board_info usb_a9263_spi_devices[] = {
117 #if !defined(CONFIG_MMC_AT91)
118 { /* DataFlash chip */
119 .modalias = "mtd_dataflash",
120 .chip_select = 0,
121 .max_speed_hz = 15 * 1000 * 1000,
122 .bus_num = 0,
123 }
124 #endif
125 };
126
127 static struct spi_board_info usb_a9g20_spi_devices[] = {
128 #if defined(CONFIG_MMC_SPI) || defined(CONFIG_MMC_SPI_MODULE)
129 {
130 .modalias = "mmc_spi",
131 .max_speed_hz = 20000000, /* max spi clock (SCK) speed in HZ */
132 .bus_num = 1,
133 .chip_select = 0,
134 .platform_data = &at91_mmc_spi_pdata,
135 .mode = SPI_MODE_3,
136 },
137 #endif
138 };
139
ek_add_device_spi(void)140 static void __init ek_add_device_spi(void)
141 {
142 if (machine_is_usb_a9263())
143 at91_add_device_spi(usb_a9263_spi_devices, ARRAY_SIZE(usb_a9263_spi_devices));
144 else if (machine_is_usb_a9g20())
145 at91_add_device_spi(usb_a9g20_spi_devices, ARRAY_SIZE(usb_a9g20_spi_devices));
146 }
147
148 /*
149 * MACB Ethernet device
150 */
151 static struct macb_platform_data __initdata ek_macb_data = {
152 .phy_irq_pin = AT91_PIN_PE31,
153 .is_rmii = 1,
154 };
155
ek_add_device_eth(void)156 static void __init ek_add_device_eth(void)
157 {
158 if (machine_is_usb_a9260() || machine_is_usb_a9g20())
159 ek_macb_data.phy_irq_pin = AT91_PIN_PA31;
160
161 at91_add_device_eth(&ek_macb_data);
162 }
163
164 /*
165 * NAND flash
166 */
167 static struct mtd_partition __initdata ek_nand_partition[] = {
168 {
169 .name = "barebox",
170 .offset = 0,
171 .size = 3 * SZ_128K,
172 }, {
173 .name = "bareboxenv",
174 .offset = MTDPART_OFS_NXTBLK,
175 .size = SZ_128K,
176 }, {
177 .name = "bareboxenv2",
178 .offset = MTDPART_OFS_NXTBLK,
179 .size = SZ_128K,
180 }, {
181 .name = "kernel",
182 .offset = MTDPART_OFS_NXTBLK,
183 .size = 4 * SZ_1M,
184 }, {
185 .name = "rootfs",
186 .offset = MTDPART_OFS_NXTBLK,
187 .size = 120 * SZ_1M,
188 }, {
189 .name = "data",
190 .offset = MTDPART_OFS_NXTBLK,
191 .size = MTDPART_SIZ_FULL,
192 }
193 };
194
195 static struct atmel_nand_data __initdata ek_nand_data = {
196 .ale = 21,
197 .cle = 22,
198 .det_pin = -EINVAL,
199 .rdy_pin = AT91_PIN_PA22,
200 .enable_pin = AT91_PIN_PD15,
201 .ecc_mode = NAND_ECC_SOFT,
202 .on_flash_bbt = 1,
203 .parts = ek_nand_partition,
204 .num_parts = ARRAY_SIZE(ek_nand_partition),
205 };
206
207 static struct sam9_smc_config __initdata usb_a9260_nand_smc_config = {
208 .ncs_read_setup = 0,
209 .nrd_setup = 1,
210 .ncs_write_setup = 0,
211 .nwe_setup = 1,
212
213 .ncs_read_pulse = 3,
214 .nrd_pulse = 3,
215 .ncs_write_pulse = 3,
216 .nwe_pulse = 3,
217
218 .read_cycle = 5,
219 .write_cycle = 5,
220
221 .mode = AT91_SMC_READMODE | AT91_SMC_WRITEMODE | AT91_SMC_EXNWMODE_DISABLE | AT91_SMC_DBW_8,
222 .tdf_cycles = 2,
223 };
224
225 static struct sam9_smc_config __initdata usb_a9g20_nand_smc_config = {
226 .ncs_read_setup = 0,
227 .nrd_setup = 2,
228 .ncs_write_setup = 0,
229 .nwe_setup = 2,
230
231 .ncs_read_pulse = 4,
232 .nrd_pulse = 4,
233 .ncs_write_pulse = 4,
234 .nwe_pulse = 4,
235
236 .read_cycle = 7,
237 .write_cycle = 7,
238
239 .mode = AT91_SMC_READMODE | AT91_SMC_WRITEMODE | AT91_SMC_EXNWMODE_DISABLE | AT91_SMC_DBW_8,
240 .tdf_cycles = 3,
241 };
242
ek_add_device_nand(void)243 static void __init ek_add_device_nand(void)
244 {
245 if (machine_is_usb_a9260() || machine_is_usb_a9g20()) {
246 ek_nand_data.rdy_pin = AT91_PIN_PC13;
247 ek_nand_data.enable_pin = AT91_PIN_PC14;
248 }
249
250 /* configure chip-select 3 (NAND) */
251 if (machine_is_usb_a9g20())
252 sam9_smc_configure(0, 3, &usb_a9g20_nand_smc_config);
253 else
254 sam9_smc_configure(0, 3, &usb_a9260_nand_smc_config);
255
256 at91_add_device_nand(&ek_nand_data);
257 }
258
259
260 /*
261 * GPIO Buttons
262 */
263 #if defined(CONFIG_KEYBOARD_GPIO) || defined(CONFIG_KEYBOARD_GPIO_MODULE)
264 static struct gpio_keys_button ek_buttons[] = {
265 { /* USER PUSH BUTTON */
266 .code = KEY_ENTER,
267 .gpio = AT91_PIN_PB10,
268 .active_low = 1,
269 .desc = "user_pb",
270 .wakeup = 1,
271 }
272 };
273
274 static struct gpio_keys_platform_data ek_button_data = {
275 .buttons = ek_buttons,
276 .nbuttons = ARRAY_SIZE(ek_buttons),
277 };
278
279 static struct platform_device ek_button_device = {
280 .name = "gpio-keys",
281 .id = -1,
282 .num_resources = 0,
283 .dev = {
284 .platform_data = &ek_button_data,
285 }
286 };
287
ek_add_device_buttons(void)288 static void __init ek_add_device_buttons(void)
289 {
290 at91_set_GPIO_periph(AT91_PIN_PB10, 1); /* user push button, pull up enabled */
291 at91_set_deglitch(AT91_PIN_PB10, 1);
292
293 platform_device_register(&ek_button_device);
294 }
295 #else
ek_add_device_buttons(void)296 static void __init ek_add_device_buttons(void) {}
297 #endif
298
299 /*
300 * LEDs
301 */
302 static struct gpio_led ek_leds[] = {
303 { /* user_led (green) */
304 .name = "user_led",
305 .gpio = AT91_PIN_PB21,
306 .active_low = 1,
307 .default_trigger = "heartbeat",
308 }
309 };
310
311 static struct i2c_board_info __initdata ek_i2c_devices[] = {
312 {
313 I2C_BOARD_INFO("rv3029c2", 0x56),
314 },
315 };
316
ek_add_device_leds(void)317 static void __init ek_add_device_leds(void)
318 {
319 if (machine_is_usb_a9260() || machine_is_usb_a9g20())
320 ek_leds[0].active_low = 0;
321
322 at91_gpio_leds(ek_leds, ARRAY_SIZE(ek_leds));
323 }
324
ek_board_init(void)325 static void __init ek_board_init(void)
326 {
327 /* Serial */
328 at91_add_device_serial();
329 /* USB Host */
330 at91_add_device_usbh(&ek_usbh_data);
331 /* USB Device */
332 ek_add_device_udc();
333 /* SPI */
334 ek_add_device_spi();
335 /* Ethernet */
336 ek_add_device_eth();
337 /* NAND */
338 ek_add_device_nand();
339 /* Push Buttons */
340 ek_add_device_buttons();
341 /* LEDs */
342 ek_add_device_leds();
343
344 if (machine_is_usb_a9g20()) {
345 /* I2C */
346 at91_add_device_i2c(ek_i2c_devices, ARRAY_SIZE(ek_i2c_devices));
347 } else {
348 /* I2C */
349 at91_add_device_i2c(NULL, 0);
350 /* shutdown controller, wakeup button (5 msec low) */
351 at91_shdwc_write(AT91_SHDW_MR, AT91_SHDW_CPTWK0_(10)
352 | AT91_SHDW_WKMODE0_LOW
353 | AT91_SHDW_RTTWKEN);
354 }
355 }
356
357 MACHINE_START(USB_A9263, "CALAO USB_A9263")
358 /* Maintainer: calao-systems */
359 .timer = &at91sam926x_timer,
360 .map_io = at91_map_io,
361 .init_early = ek_init_early,
362 .init_irq = at91_init_irq_default,
363 .init_machine = ek_board_init,
364 MACHINE_END
365
366 MACHINE_START(USB_A9260, "CALAO USB_A9260")
367 /* Maintainer: calao-systems */
368 .timer = &at91sam926x_timer,
369 .map_io = at91_map_io,
370 .init_early = ek_init_early,
371 .init_irq = at91_init_irq_default,
372 .init_machine = ek_board_init,
373 MACHINE_END
374
375 MACHINE_START(USB_A9G20, "CALAO USB_A92G0")
376 /* Maintainer: Jean-Christophe PLAGNIOL-VILLARD */
377 .timer = &at91sam926x_timer,
378 .map_io = at91_map_io,
379 .init_early = ek_init_early,
380 .init_irq = at91_init_irq_default,
381 .init_machine = ek_board_init,
382 MACHINE_END
383