Merge http://sucs.org/~rohan/git/gfs2-3.0-nmw
[pandora-kernel.git] / arch / arm / mach-at91 / board-sam9g20ek.c
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)
58 static int inline ek_have_2mmc(void)
59 {
60         return machine_is_at91sam9g20ek_2mmc() || (system_rev & HAVE_2MMC);
61 }
62
63
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 };
90
91 /*
92  * USB Device port
93  */
94 static struct at91_udc_data __initdata ek_udc_data = {
95         .vbus_pin       = AT91_PIN_PC5,
96         .pullup_pin     = 0,            /* pull-up driven by UDC */
97 };
98
99
100 /*
101  * SPI devices.
102  */
103 static struct spi_board_info ek_spi_devices[] = {
104 #if !(defined(CONFIG_MMC_ATMELMCI) || defined(CONFIG_MMC_AT91))
105         {       /* DataFlash chip */
106                 .modalias       = "mtd_dataflash",
107                 .chip_select    = 1,
108                 .max_speed_hz   = 15 * 1000 * 1000,
109                 .bus_num        = 0,
110         },
111 #if defined(CONFIG_MTD_AT91_DATAFLASH_CARD)
112         {       /* DataFlash card */
113                 .modalias       = "mtd_dataflash",
114                 .chip_select    = 0,
115                 .max_speed_hz   = 15 * 1000 * 1000,
116                 .bus_num        = 0,
117         },
118 #endif
119 #endif
120 };
121
122
123 /*
124  * MACB Ethernet device
125  */
126 static struct at91_eth_data __initdata ek_macb_data = {
127         .phy_irq_pin    = AT91_PIN_PA7,
128         .is_rmii        = 1,
129 };
130
131 static void __init ek_add_device_macb(void)
132 {
133         if (ek_have_2mmc())
134                 ek_macb_data.phy_irq_pin = AT91_PIN_PB0;
135
136         at91_add_device_eth(&ek_macb_data);
137 }
138
139 /*
140  * NAND flash
141  */
142 static struct mtd_partition __initdata ek_nand_partition[] = {
143         {
144                 .name   = "Bootstrap",
145                 .offset = 0,
146                 .size   = 4 * SZ_1M,
147         },
148         {
149                 .name   = "Partition 1",
150                 .offset = MTDPART_OFS_NXTBLK,
151                 .size   = 60 * SZ_1M,
152         },
153         {
154                 .name   = "Partition 2",
155                 .offset = MTDPART_OFS_NXTBLK,
156                 .size   = MTDPART_SIZ_FULL,
157         },
158 };
159
160 static struct mtd_partition * __init nand_partitions(int size, int *num_partitions)
161 {
162         *num_partitions = ARRAY_SIZE(ek_nand_partition);
163         return ek_nand_partition;
164 }
165
166 /* det_pin is not connected */
167 static struct atmel_nand_data __initdata ek_nand_data = {
168         .ale            = 21,
169         .cle            = 22,
170         .rdy_pin        = AT91_PIN_PC13,
171         .enable_pin     = AT91_PIN_PC14,
172         .partition_info = nand_partitions,
173 };
174
175 static struct sam9_smc_config __initdata ek_nand_smc_config = {
176         .ncs_read_setup         = 0,
177         .nrd_setup              = 2,
178         .ncs_write_setup        = 0,
179         .nwe_setup              = 2,
180
181         .ncs_read_pulse         = 4,
182         .nrd_pulse              = 4,
183         .ncs_write_pulse        = 4,
184         .nwe_pulse              = 4,
185
186         .read_cycle             = 7,
187         .write_cycle            = 7,
188
189         .mode                   = AT91_SMC_READMODE | AT91_SMC_WRITEMODE | AT91_SMC_EXNWMODE_DISABLE,
190         .tdf_cycles             = 3,
191 };
192
193 static void __init ek_add_device_nand(void)
194 {
195         ek_nand_data.bus_width_16 = board_have_nand_16bit();
196         /* setup bus-width (8 or 16) */
197         if (ek_nand_data.bus_width_16)
198                 ek_nand_smc_config.mode |= AT91_SMC_DBW_16;
199         else
200                 ek_nand_smc_config.mode |= AT91_SMC_DBW_8;
201
202         /* configure chip-select 3 (NAND) */
203         sam9_smc_configure(3, &ek_nand_smc_config);
204
205         at91_add_device_nand(&ek_nand_data);
206 }
207
208
209 /*
210  * MCI (SD/MMC)
211  * wp_pin and vcc_pin are not connected
212  */
213 #if defined(CONFIG_MMC_ATMELMCI) || defined(CONFIG_MMC_ATMELMCI_MODULE)
214 static struct mci_platform_data __initdata ek_mmc_data = {
215         .slot[1] = {
216                 .bus_width      = 4,
217                 .detect_pin     = AT91_PIN_PC9,
218         },
219
220 };
221 #else
222 static struct at91_mmc_data __initdata ek_mmc_data = {
223         .slot_b         = 1,    /* Only one slot so use slot B */
224         .wire4          = 1,
225         .det_pin        = AT91_PIN_PC9,
226 };
227 #endif
228
229 static void __init ek_add_device_mmc(void)
230 {
231 #if defined(CONFIG_MMC_ATMELMCI) || defined(CONFIG_MMC_ATMELMCI_MODULE)
232         if (ek_have_2mmc()) {
233                 ek_mmc_data.slot[0].bus_width = 4;
234                 ek_mmc_data.slot[0].detect_pin = AT91_PIN_PC2;
235         }
236         at91_add_device_mci(0, &ek_mmc_data);
237 #else
238         at91_add_device_mmc(0, &ek_mmc_data);
239 #endif
240 }
241
242 /*
243  * LEDs
244  */
245 static struct gpio_led ek_leds[] = {
246         {       /* "bottom" led, green, userled1 to be defined */
247                 .name                   = "ds5",
248                 .gpio                   = AT91_PIN_PA6,
249                 .active_low             = 1,
250                 .default_trigger        = "none",
251         },
252         {       /* "power" led, yellow */
253                 .name                   = "ds1",
254                 .gpio                   = AT91_PIN_PA9,
255                 .default_trigger        = "heartbeat",
256         }
257 };
258
259 static void __init ek_add_device_gpio_leds(void)
260 {
261         if (ek_have_2mmc()) {
262                 ek_leds[0].gpio = AT91_PIN_PB8;
263                 ek_leds[1].gpio = AT91_PIN_PB9;
264         }
265
266         at91_gpio_leds(ek_leds, ARRAY_SIZE(ek_leds));
267 }
268
269 /*
270  * GPIO Buttons
271  */
272 #if defined(CONFIG_KEYBOARD_GPIO) || defined(CONFIG_KEYBOARD_GPIO_MODULE)
273 static struct gpio_keys_button ek_buttons[] = {
274         {
275                 .gpio           = AT91_PIN_PA30,
276                 .code           = BTN_3,
277                 .desc           = "Button 3",
278                 .active_low     = 1,
279                 .wakeup         = 1,
280         },
281         {
282                 .gpio           = AT91_PIN_PA31,
283                 .code           = BTN_4,
284                 .desc           = "Button 4",
285                 .active_low     = 1,
286                 .wakeup         = 1,
287         }
288 };
289
290 static struct gpio_keys_platform_data ek_button_data = {
291         .buttons        = ek_buttons,
292         .nbuttons       = ARRAY_SIZE(ek_buttons),
293 };
294
295 static struct platform_device ek_button_device = {
296         .name           = "gpio-keys",
297         .id             = -1,
298         .num_resources  = 0,
299         .dev            = {
300                 .platform_data  = &ek_button_data,
301         }
302 };
303
304 static void __init ek_add_device_buttons(void)
305 {
306         at91_set_gpio_input(AT91_PIN_PA30, 1);  /* btn3 */
307         at91_set_deglitch(AT91_PIN_PA30, 1);
308         at91_set_gpio_input(AT91_PIN_PA31, 1);  /* btn4 */
309         at91_set_deglitch(AT91_PIN_PA31, 1);
310
311         platform_device_register(&ek_button_device);
312 }
313 #else
314 static void __init ek_add_device_buttons(void) {}
315 #endif
316
317 #if defined(CONFIG_REGULATOR_FIXED_VOLTAGE) || defined(CONFIG_REGULATOR_FIXED_VOLTAGE_MODULE)
318 static struct regulator_consumer_supply ek_audio_consumer_supplies[] = {
319         REGULATOR_SUPPLY("AVDD", "0-001b"),
320         REGULATOR_SUPPLY("HPVDD", "0-001b"),
321         REGULATOR_SUPPLY("DBVDD", "0-001b"),
322         REGULATOR_SUPPLY("DCVDD", "0-001b"),
323 };
324
325 static struct regulator_init_data ek_avdd_reg_init_data = {
326         .constraints    = {
327                 .name   = "3V3",
328                 .valid_ops_mask = REGULATOR_CHANGE_STATUS,
329         },
330         .consumer_supplies = ek_audio_consumer_supplies,
331         .num_consumer_supplies = ARRAY_SIZE(ek_audio_consumer_supplies),
332 };
333
334 static struct fixed_voltage_config ek_vdd_pdata = {
335         .supply_name    = "board-3V3",
336         .microvolts     = 3300000,
337         .gpio           = -EINVAL,
338         .enabled_at_boot = 0,
339         .init_data      = &ek_avdd_reg_init_data,
340 };
341 static struct platform_device ek_voltage_regulator = {
342         .name           = "reg-fixed-voltage",
343         .id             = -1,
344         .num_resources  = 0,
345         .dev            = {
346                 .platform_data  = &ek_vdd_pdata,
347         },
348 };
349 static void __init ek_add_regulators(void)
350 {
351         platform_device_register(&ek_voltage_regulator);
352 }
353 #else
354 static void __init ek_add_regulators(void) {}
355 #endif
356
357
358 static struct i2c_board_info __initdata ek_i2c_devices[] = {
359         {
360                 I2C_BOARD_INFO("24c512", 0x50)
361         },
362         {
363                 I2C_BOARD_INFO("wm8731", 0x1b)
364         },
365 };
366
367
368 static void __init ek_board_init(void)
369 {
370         /* Serial */
371         at91_add_device_serial();
372         /* USB Host */
373         at91_add_device_usbh(&ek_usbh_data);
374         /* USB Device */
375         at91_add_device_udc(&ek_udc_data);
376         /* SPI */
377         at91_add_device_spi(ek_spi_devices, ARRAY_SIZE(ek_spi_devices));
378         /* NAND */
379         ek_add_device_nand();
380         /* Ethernet */
381         ek_add_device_macb();
382         /* Regulators */
383         ek_add_regulators();
384         /* MMC */
385         ek_add_device_mmc();
386         /* I2C */
387         at91_add_device_i2c(ek_i2c_devices, ARRAY_SIZE(ek_i2c_devices));
388         /* LEDs */
389         ek_add_device_gpio_leds();
390         /* Push Buttons */
391         ek_add_device_buttons();
392         /* PCK0 provides MCLK to the WM8731 */
393         at91_set_B_periph(AT91_PIN_PC1, 0);
394         /* SSC (for WM8731) */
395         at91_add_device_ssc(AT91SAM9260_ID_SSC, ATMEL_SSC_TX);
396 }
397
398 MACHINE_START(AT91SAM9G20EK, "Atmel AT91SAM9G20-EK")
399         /* Maintainer: Atmel */
400         .timer          = &at91sam926x_timer,
401         .map_io         = at91_map_io,
402         .init_early     = ek_init_early,
403         .init_irq       = at91_init_irq_default,
404         .init_machine   = ek_board_init,
405 MACHINE_END
406
407 MACHINE_START(AT91SAM9G20EK_2MMC, "Atmel AT91SAM9G20-EK 2 MMC Slot Mod")
408         /* Maintainer: Atmel */
409         .timer          = &at91sam926x_timer,
410         .map_io         = at91_map_io,
411         .init_early     = ek_init_early,
412         .init_irq       = at91_init_irq_default,
413         .init_machine   = ek_board_init,
414 MACHINE_END