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board-sam9263ek.c
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1 /*
2  * linux/arch/arm/mach-at91/board-sam9263ek.c
3  *
4  * Copyright (C) 2005 SAN People
5  * Copyright (C) 2007 Atmel Corporation.
6  *
7  * This program is free software; you can redistribute it and/or modify
8  * it under the terms of the GNU General Public License as published by
9  * the Free Software Foundation; either version 2 of the License, or
10  * (at your option) any later version.
11  *
12  * This program is distributed in the hope that it will be useful,
13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15  * GNU General Public License for more details.
16  *
17  * You should have received a copy of the GNU General Public License
18  * along with this program; if not, write to the Free Software
19  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20  */
21 
22 #include <linux/types.h>
23 #include <linux/gpio.h>
24 #include <linux/init.h>
25 #include <linux/mm.h>
26 #include <linux/module.h>
27 #include <linux/platform_device.h>
28 #include <linux/spi/spi.h>
29 #include <linux/spi/ads7846.h>
30 #include <linux/i2c/at24.h>
31 #include <linux/fb.h>
32 #include <linux/gpio_keys.h>
33 #include <linux/input.h>
34 #include <linux/leds.h>
35 
36 #include <video/atmel_lcdc.h>
37 
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/hardware.h>
47 #include <mach/board.h>
48 #include <mach/at91_aic.h>
49 #include <mach/at91sam9_smc.h>
50 #include <mach/at91_shdwc.h>
51 #include <mach/system_rev.h>
52 
53 #include "sam9_smc.h"
54 #include "generic.h"
55 
56 
57 static void __init ek_init_early(void)
58 {
59  /* Initialize processor: 16.367 MHz crystal */
60  at91_initialize(16367660);
61 }
62 
63 /*
64  * USB Host port
65  */
66 static struct at91_usbh_data __initdata ek_usbh_data = {
67  .ports = 2,
68  .vbus_pin = { AT91_PIN_PA24, AT91_PIN_PA21 },
69  .vbus_pin_active_low = {1, 1},
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_PA25,
78  .pullup_pin = -EINVAL, /* pull-up driven by UDC */
79 };
80 
81 
82 /*
83  * ADS7846 Touchscreen
84  */
85 #if defined(CONFIG_TOUCHSCREEN_ADS7846) || defined(CONFIG_TOUCHSCREEN_ADS7846_MODULE)
86 static int ads7843_pendown_state(void)
87 {
88  return !at91_get_gpio_value(AT91_PIN_PA15); /* Touchscreen PENIRQ */
89 }
90 
91 static struct ads7846_platform_data ads_info = {
92  .model = 7843,
93  .x_min = 150,
94  .x_max = 3830,
95  .y_min = 190,
96  .y_max = 3830,
97  .vref_delay_usecs = 100,
98  .x_plate_ohms = 450,
99  .y_plate_ohms = 250,
100  .pressure_max = 15000,
101  .debounce_max = 1,
102  .debounce_rep = 0,
103  .debounce_tol = (~0),
104  .get_pendown_state = ads7843_pendown_state,
105 };
106 
107 static void __init ek_add_device_ts(void)
108 {
109  at91_set_B_periph(AT91_PIN_PA15, 1); /* External IRQ1, with pullup */
110  at91_set_gpio_input(AT91_PIN_PA31, 1); /* Touchscreen BUSY signal */
111 }
112 #else
113 static void __init ek_add_device_ts(void) {}
114 #endif
115 
116 /*
117  * SPI devices.
118  */
119 static struct spi_board_info ek_spi_devices[] = {
120 #if defined(CONFIG_MTD_AT91_DATAFLASH_CARD)
121  { /* DataFlash card */
122  .modalias = "mtd_dataflash",
123  .chip_select = 0,
124  .max_speed_hz = 15 * 1000 * 1000,
125  .bus_num = 0,
126  },
127 #endif
128 #if defined(CONFIG_TOUCHSCREEN_ADS7846) || defined(CONFIG_TOUCHSCREEN_ADS7846_MODULE)
129  {
130  .modalias = "ads7846",
131  .chip_select = 3,
132  .max_speed_hz = 125000 * 26, /* (max sample rate @ 3V) * (cmd + data + overhead) */
133  .bus_num = 0,
134  .platform_data = &ads_info,
136  },
137 #endif
138 };
139 
140 
141 /*
142  * MCI (SD/MMC)
143  */
144 static struct mci_platform_data __initdata mci1_data = {
145  .slot[0] = {
146  .bus_width = 4,
147  .detect_pin = AT91_PIN_PE18,
148  .wp_pin = AT91_PIN_PE19,
149  },
150 };
151 
152 
153 /*
154  * MACB Ethernet device
155  */
156 static struct macb_platform_data __initdata ek_macb_data = {
157  .phy_irq_pin = AT91_PIN_PE31,
158  .is_rmii = 1,
159 };
160 
161 
162 /*
163  * NAND flash
164  */
165 static struct mtd_partition __initdata ek_nand_partition[] = {
166  {
167  .name = "Partition 1",
168  .offset = 0,
169  .size = SZ_64M,
170  },
171  {
172  .name = "Partition 2",
173  .offset = MTDPART_OFS_NXTBLK,
174  .size = MTDPART_SIZ_FULL,
175  },
176 };
177 
178 static struct atmel_nand_data __initdata ek_nand_data = {
179  .ale = 21,
180  .cle = 22,
181  .det_pin = -EINVAL,
182  .rdy_pin = AT91_PIN_PA22,
183  .enable_pin = AT91_PIN_PD15,
184  .ecc_mode = NAND_ECC_SOFT,
185  .on_flash_bbt = 1,
186  .parts = ek_nand_partition,
187  .num_parts = ARRAY_SIZE(ek_nand_partition),
188 };
189 
190 static struct sam9_smc_config __initdata ek_nand_smc_config = {
191  .ncs_read_setup = 0,
192  .nrd_setup = 1,
193  .ncs_write_setup = 0,
194  .nwe_setup = 1,
195 
196  .ncs_read_pulse = 3,
197  .nrd_pulse = 3,
198  .ncs_write_pulse = 3,
199  .nwe_pulse = 3,
200 
201  .read_cycle = 5,
202  .write_cycle = 5,
203 
205  .tdf_cycles = 2,
206 };
207 
208 static void __init ek_add_device_nand(void)
209 {
210  ek_nand_data.bus_width_16 = board_have_nand_16bit();
211  /* setup bus-width (8 or 16) */
212  if (ek_nand_data.bus_width_16)
213  ek_nand_smc_config.mode |= AT91_SMC_DBW_16;
214  else
215  ek_nand_smc_config.mode |= AT91_SMC_DBW_8;
216 
217  /* configure chip-select 3 (NAND) */
218  sam9_smc_configure(0, 3, &ek_nand_smc_config);
219 
220  at91_add_device_nand(&ek_nand_data);
221 }
222 
223 
224 /*
225  * I2C devices
226  */
227 static struct at24_platform_data at24c512 = {
228  .byte_len = SZ_512K / 8,
229  .page_size = 128,
230  .flags = AT24_FLAG_ADDR16,
231 };
232 
233 
234 static struct i2c_board_info __initdata ek_i2c_devices[] = {
235  {
236  I2C_BOARD_INFO("24c512", 0x50),
237  .platform_data = &at24c512,
238  },
239  /* more devices can be added using expansion connectors */
240 };
241 
242 /*
243  * LCD Controller
244  */
245 #if defined(CONFIG_FB_ATMEL) || defined(CONFIG_FB_ATMEL_MODULE)
246 static struct fb_videomode at91_tft_vga_modes[] = {
247  {
248  .name = "TX09D50VM1CCA @ 60",
249  .refresh = 60,
250  .xres = 240, .yres = 320,
251  .pixclock = KHZ2PICOS(4965),
252 
253  .left_margin = 1, .right_margin = 33,
254  .upper_margin = 1, .lower_margin = 0,
255  .hsync_len = 5, .vsync_len = 1,
256 
258  .vmode = FB_VMODE_NONINTERLACED,
259  },
260 };
261 
262 static struct fb_monspecs at91fb_default_monspecs = {
263  .manufacturer = "HIT",
264  .monitor = "TX09D70VM1CCA",
265 
266  .modedb = at91_tft_vga_modes,
267  .modedb_len = ARRAY_SIZE(at91_tft_vga_modes),
268  .hfmin = 15000,
269  .hfmax = 64000,
270  .vfmin = 50,
271  .vfmax = 150,
272 };
273 
274 #define AT91SAM9263_DEFAULT_LCDCON2 (ATMEL_LCDC_MEMOR_LITTLE \
275  | ATMEL_LCDC_DISTYPE_TFT \
276  | ATMEL_LCDC_CLKMOD_ALWAYSACTIVE)
277 
278 static void at91_lcdc_power_control(int on)
279 {
281 }
282 
283 /* Driver datas */
284 static struct atmel_lcdfb_info __initdata ek_lcdc_data = {
285  .lcdcon_is_backlight = true,
286  .default_bpp = 16,
287  .default_dmacon = ATMEL_LCDC_DMAEN,
288  .default_lcdcon2 = AT91SAM9263_DEFAULT_LCDCON2,
289  .default_monspecs = &at91fb_default_monspecs,
290  .atmel_lcdfb_power_control = at91_lcdc_power_control,
291  .guard_time = 1,
292 };
293 
294 #else
295 static struct atmel_lcdfb_info __initdata ek_lcdc_data;
296 #endif
297 
298 
299 /*
300  * GPIO Buttons
301  */
302 #if defined(CONFIG_KEYBOARD_GPIO) || defined(CONFIG_KEYBOARD_GPIO_MODULE)
303 static struct gpio_keys_button ek_buttons[] = {
304  { /* BP1, "leftclic" */
305  .code = BTN_LEFT,
306  .gpio = AT91_PIN_PC5,
307  .active_low = 1,
308  .desc = "left_click",
309  .wakeup = 1,
310  },
311  { /* BP2, "rightclic" */
312  .code = BTN_RIGHT,
313  .gpio = AT91_PIN_PC4,
314  .active_low = 1,
315  .desc = "right_click",
316  .wakeup = 1,
317  }
318 };
319 
320 static struct gpio_keys_platform_data ek_button_data = {
321  .buttons = ek_buttons,
322  .nbuttons = ARRAY_SIZE(ek_buttons),
323 };
324 
325 static struct platform_device ek_button_device = {
326  .name = "gpio-keys",
327  .id = -1,
328  .num_resources = 0,
329  .dev = {
330  .platform_data = &ek_button_data,
331  }
332 };
333 
334 static void __init ek_add_device_buttons(void)
335 {
336  at91_set_GPIO_periph(AT91_PIN_PC5, 1); /* left button */
338  at91_set_GPIO_periph(AT91_PIN_PC4, 1); /* right button */
340 
341  platform_device_register(&ek_button_device);
342 }
343 #else
344 static void __init ek_add_device_buttons(void) {}
345 #endif
346 
347 
348 /*
349  * AC97
350  * reset_pin is not connected: NRST
351  */
352 static struct ac97c_platform_data ek_ac97_data = {
353  .reset_pin = -EINVAL,
354 };
355 
356 
357 /*
358  * LEDs ... these could all be PWM-driven, for variable brightness
359  */
360 static struct gpio_led ek_leds[] = {
361  { /* "right" led, green, userled2 (could be driven by pwm2) */
362  .name = "ds2",
363  .gpio = AT91_PIN_PC29,
364  .active_low = 1,
365  .default_trigger = "nand-disk",
366  },
367  { /* "power" led, yellow (could be driven by pwm0) */
368  .name = "ds3",
369  .gpio = AT91_PIN_PB7,
370  .default_trigger = "heartbeat",
371  }
372 };
373 
374 /*
375  * PWM Leds
376  */
377 static struct gpio_led ek_pwm_led[] = {
378  /* For now only DS1 is PWM-driven (by pwm1) */
379  {
380  .name = "ds1",
381  .gpio = 1, /* is PWM channel number */
382  .active_low = 1,
383  .default_trigger = "none",
384  }
385 };
386 
387 /*
388  * CAN
389  */
390 static void sam9263ek_transceiver_switch(int on)
391 {
392  if (on) {
393  at91_set_gpio_output(AT91_PIN_PA18, 1); /* CANRXEN */
394  at91_set_gpio_output(AT91_PIN_PA19, 0); /* CANRS */
395  } else {
396  at91_set_gpio_output(AT91_PIN_PA18, 0); /* CANRXEN */
397  at91_set_gpio_output(AT91_PIN_PA19, 1); /* CANRS */
398  }
399 }
400 
401 static struct at91_can_data ek_can_data = {
402  .transceiver_switch = sam9263ek_transceiver_switch,
403 };
404 
405 static void __init ek_board_init(void)
406 {
407  /* Serial */
408  /* DBGU on ttyS0. (Rx & Tx only) */
409  at91_register_uart(0, 0, 0);
410 
411  /* USART0 on ttyS1. (Rx, Tx, RTS, CTS) */
414  /* USB Host */
415  at91_add_device_usbh(&ek_usbh_data);
416  /* USB Device */
417  at91_add_device_udc(&ek_udc_data);
418  /* SPI */
419  at91_set_gpio_output(AT91_PIN_PE20, 1); /* select spi0 clock */
420  at91_add_device_spi(ek_spi_devices, ARRAY_SIZE(ek_spi_devices));
421  /* Touchscreen */
422  ek_add_device_ts();
423  /* MMC */
424  at91_add_device_mci(1, &mci1_data);
425  /* Ethernet */
426  at91_add_device_eth(&ek_macb_data);
427  /* NAND */
428  ek_add_device_nand();
429  /* I2C */
430  at91_add_device_i2c(ek_i2c_devices, ARRAY_SIZE(ek_i2c_devices));
431  /* LCD Controller */
432  at91_add_device_lcdc(&ek_lcdc_data);
433  /* Push Buttons */
434  ek_add_device_buttons();
435  /* AC97 */
436  at91_add_device_ac97(&ek_ac97_data);
437  /* LEDs */
438  at91_gpio_leds(ek_leds, ARRAY_SIZE(ek_leds));
439  at91_pwm_leds(ek_pwm_led, ARRAY_SIZE(ek_pwm_led));
440  /* CAN */
441  at91_add_device_can(&ek_can_data);
442 }
443 
444 MACHINE_START(AT91SAM9263EK, "Atmel AT91SAM9263-EK")
445  /* Maintainer: Atmel */
446  .timer = &at91sam926x_timer,
447  .map_io = at91_map_io,
448  .handle_irq = at91_aic_handle_irq,
449  .init_early = ek_init_early,
451  .init_machine = ek_board_init,