Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc
[linux-2.6.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/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>
33
34 #include <mach/hardware.h>
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/board.h>
44 #include <mach/gpio.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         at91sam9260_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 static void __init ek_init_irq(void)
85 {
86         at91sam9260_init_interrupts(NULL);
87 }
88
89
90 /*
91  * USB Host port
92  */
93 static struct at91_usbh_data __initdata ek_usbh_data = {
94         .ports          = 2,
95 };
96
97 /*
98  * USB Device port
99  */
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 */
103 };
104
105
106 /*
107  * SPI devices.
108  */
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,
116         },
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,
123         },
124 #endif
125 #endif
126 };
127
128
129 /*
130  * MACB Ethernet device
131  */
132 static struct at91_eth_data __initdata ek_macb_data = {
133         .phy_irq_pin    = AT91_PIN_PA7,
134         .is_rmii        = 1,
135 };
136
137 static void __init ek_add_device_macb(void)
138 {
139         if (ek_have_2mmc())
140                 ek_macb_data.phy_irq_pin = AT91_PIN_PB0;
141
142         at91_add_device_eth(&ek_macb_data);
143 }
144
145 /*
146  * NAND flash
147  */
148 static struct mtd_partition __initdata ek_nand_partition[] = {
149         {
150                 .name   = "Bootstrap",
151                 .offset = 0,
152                 .size   = 4 * SZ_1M,
153         },
154         {
155                 .name   = "Partition 1",
156                 .offset = MTDPART_OFS_NXTBLK,
157                 .size   = 60 * SZ_1M,
158         },
159         {
160                 .name   = "Partition 2",
161                 .offset = MTDPART_OFS_NXTBLK,
162                 .size   = MTDPART_SIZ_FULL,
163         },
164 };
165
166 static struct mtd_partition * __init nand_partitions(int size, int *num_partitions)
167 {
168         *num_partitions = ARRAY_SIZE(ek_nand_partition);
169         return ek_nand_partition;
170 }
171
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,
179 };
180
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,
186
187         .ncs_read_pulse         = 4,
188         .nrd_pulse              = 4,
189         .ncs_write_pulse        = 4,
190         .nwe_pulse              = 4,
191
192         .read_cycle             = 7,
193         .write_cycle            = 7,
194
195         .mode                   = AT91_SMC_READMODE | AT91_SMC_WRITEMODE | AT91_SMC_EXNWMODE_DISABLE,
196         .tdf_cycles             = 3,
197 };
198
199 static void __init ek_add_device_nand(void)
200 {
201         ek_nand_data.bus_width_16 = board_have_nand_16bit();
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;
207
208         /* configure chip-select 3 (NAND) */
209         sam9_smc_configure(3, &ek_nand_smc_config);
210
211         at91_add_device_nand(&ek_nand_data);
212 }
213
214
215 /*
216  * MCI (SD/MMC)
217  * wp_pin and vcc_pin are not connected
218  */
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,
224         },
225
226 };
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,
232 };
233 #endif
234
235 static void __init ek_add_device_mmc(void)
236 {
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;
241         }
242         at91_add_device_mci(0, &ek_mmc_data);
243 #else
244         at91_add_device_mmc(0, &ek_mmc_data);
245 #endif
246 }
247
248 /*
249  * LEDs
250  */
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",
257         },
258         {       /* "power" led, yellow */
259                 .name                   = "ds1",
260                 .gpio                   = AT91_PIN_PA9,
261                 .default_trigger        = "heartbeat",
262         }
263 };
264
265 static void __init ek_add_device_gpio_leds(void)
266 {
267         if (ek_have_2mmc()) {
268                 ek_leds[0].gpio = AT91_PIN_PB8;
269                 ek_leds[1].gpio = AT91_PIN_PB9;
270         }
271
272         at91_gpio_leds(ek_leds, ARRAY_SIZE(ek_leds));
273 }
274
275 /*
276  * GPIO Buttons
277  */
278 #if defined(CONFIG_KEYBOARD_GPIO) || defined(CONFIG_KEYBOARD_GPIO_MODULE)
279 static struct gpio_keys_button ek_buttons[] = {
280         {
281                 .gpio           = AT91_PIN_PA30,
282                 .code           = BTN_3,
283                 .desc           = "Button 3",
284                 .active_low     = 1,
285                 .wakeup         = 1,
286         },
287         {
288                 .gpio           = AT91_PIN_PA31,
289                 .code           = BTN_4,
290                 .desc           = "Button 4",
291                 .active_low     = 1,
292                 .wakeup         = 1,
293         }
294 };
295
296 static struct gpio_keys_platform_data ek_button_data = {
297         .buttons        = ek_buttons,
298         .nbuttons       = ARRAY_SIZE(ek_buttons),
299 };
300
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,
307         }
308 };
309
310 static void __init ek_add_device_buttons(void)
311 {
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);
316
317         platform_device_register(&ek_button_device);
318 }
319 #else
320 static void __init ek_add_device_buttons(void) {}
321 #endif
322
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"),
329 };
330
331 static struct regulator_init_data ek_avdd_reg_init_data = {
332         .constraints    = {
333                 .name   = "3V3",
334                 .valid_ops_mask = REGULATOR_CHANGE_STATUS,
335         },
336         .consumer_supplies = ek_audio_consumer_supplies,
337         .num_consumer_supplies = ARRAY_SIZE(ek_audio_consumer_supplies),
338 };
339
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,
346 };
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,
353         },
354 };
355 static void __init ek_add_regulators(void)
356 {
357         platform_device_register(&ek_voltage_regulator);
358 }
359 #else
360 static void __init ek_add_regulators(void) {}
361 #endif
362
363
364 static struct i2c_board_info __initdata ek_i2c_devices[] = {
365         {
366                 I2C_BOARD_INFO("24c512", 0x50)
367         },
368         {
369                 I2C_BOARD_INFO("wm8731", 0x1b)
370         },
371 };
372
373
374 static void __init ek_board_init(void)
375 {
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);
402 }
403
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
412
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