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/at91sam9_smc.h>
49 #include <mach/at91_shdwc.h>
50 #include <mach/system_rev.h>
51
52 #include "sam9_smc.h"
53 #include "generic.h"
54
55
ek_init_early(void)56 static void __init ek_init_early(void)
57 {
58 /* Initialize processor: 16.367 MHz crystal */
59 at91_initialize(16367660);
60
61 /* DBGU on ttyS0. (Rx & Tx only) */
62 at91_register_uart(0, 0, 0);
63
64 /* USART0 on ttyS1. (Rx, Tx, RTS, CTS) */
65 at91_register_uart(AT91SAM9263_ID_US0, 1, ATMEL_UART_CTS | ATMEL_UART_RTS);
66
67 /* set serial console to ttyS0 (ie, DBGU) */
68 at91_set_serial_console(0);
69 }
70
71 /*
72 * USB Host port
73 */
74 static struct at91_usbh_data __initdata ek_usbh_data = {
75 .ports = 2,
76 .vbus_pin = { AT91_PIN_PA24, AT91_PIN_PA21 },
77 .overcurrent_pin= {-EINVAL, -EINVAL},
78 };
79
80 /*
81 * USB Device port
82 */
83 static struct at91_udc_data __initdata ek_udc_data = {
84 .vbus_pin = AT91_PIN_PA25,
85 .pullup_pin = -EINVAL, /* pull-up driven by UDC */
86 };
87
88
89 /*
90 * ADS7846 Touchscreen
91 */
92 #if defined(CONFIG_TOUCHSCREEN_ADS7846) || defined(CONFIG_TOUCHSCREEN_ADS7846_MODULE)
ads7843_pendown_state(void)93 static int ads7843_pendown_state(void)
94 {
95 return !at91_get_gpio_value(AT91_PIN_PA15); /* Touchscreen PENIRQ */
96 }
97
98 static struct ads7846_platform_data ads_info = {
99 .model = 7843,
100 .x_min = 150,
101 .x_max = 3830,
102 .y_min = 190,
103 .y_max = 3830,
104 .vref_delay_usecs = 100,
105 .x_plate_ohms = 450,
106 .y_plate_ohms = 250,
107 .pressure_max = 15000,
108 .debounce_max = 1,
109 .debounce_rep = 0,
110 .debounce_tol = (~0),
111 .get_pendown_state = ads7843_pendown_state,
112 };
113
ek_add_device_ts(void)114 static void __init ek_add_device_ts(void)
115 {
116 at91_set_B_periph(AT91_PIN_PA15, 1); /* External IRQ1, with pullup */
117 at91_set_gpio_input(AT91_PIN_PA31, 1); /* Touchscreen BUSY signal */
118 }
119 #else
ek_add_device_ts(void)120 static void __init ek_add_device_ts(void) {}
121 #endif
122
123 /*
124 * SPI devices.
125 */
126 static struct spi_board_info ek_spi_devices[] = {
127 #if defined(CONFIG_MTD_AT91_DATAFLASH_CARD)
128 { /* DataFlash card */
129 .modalias = "mtd_dataflash",
130 .chip_select = 0,
131 .max_speed_hz = 15 * 1000 * 1000,
132 .bus_num = 0,
133 },
134 #endif
135 #if defined(CONFIG_TOUCHSCREEN_ADS7846) || defined(CONFIG_TOUCHSCREEN_ADS7846_MODULE)
136 {
137 .modalias = "ads7846",
138 .chip_select = 3,
139 .max_speed_hz = 125000 * 26, /* (max sample rate @ 3V) * (cmd + data + overhead) */
140 .bus_num = 0,
141 .platform_data = &ads_info,
142 .irq = AT91SAM9263_ID_IRQ1,
143 },
144 #endif
145 };
146
147
148 /*
149 * MCI (SD/MMC)
150 */
151 static struct at91_mmc_data __initdata ek_mmc_data = {
152 .wire4 = 1,
153 .det_pin = AT91_PIN_PE18,
154 .wp_pin = AT91_PIN_PE19,
155 .vcc_pin = -EINVAL,
156 };
157
158
159 /*
160 * MACB Ethernet device
161 */
162 static struct macb_platform_data __initdata ek_macb_data = {
163 .phy_irq_pin = AT91_PIN_PE31,
164 .is_rmii = 1,
165 };
166
167
168 /*
169 * NAND flash
170 */
171 static struct mtd_partition __initdata ek_nand_partition[] = {
172 {
173 .name = "Partition 1",
174 .offset = 0,
175 .size = SZ_64M,
176 },
177 {
178 .name = "Partition 2",
179 .offset = MTDPART_OFS_NXTBLK,
180 .size = MTDPART_SIZ_FULL,
181 },
182 };
183
184 static struct atmel_nand_data __initdata ek_nand_data = {
185 .ale = 21,
186 .cle = 22,
187 .det_pin = -EINVAL,
188 .rdy_pin = AT91_PIN_PA22,
189 .enable_pin = AT91_PIN_PD15,
190 .parts = ek_nand_partition,
191 .num_parts = ARRAY_SIZE(ek_nand_partition),
192 };
193
194 static struct sam9_smc_config __initdata ek_nand_smc_config = {
195 .ncs_read_setup = 0,
196 .nrd_setup = 1,
197 .ncs_write_setup = 0,
198 .nwe_setup = 1,
199
200 .ncs_read_pulse = 3,
201 .nrd_pulse = 3,
202 .ncs_write_pulse = 3,
203 .nwe_pulse = 3,
204
205 .read_cycle = 5,
206 .write_cycle = 5,
207
208 .mode = AT91_SMC_READMODE | AT91_SMC_WRITEMODE | AT91_SMC_EXNWMODE_DISABLE,
209 .tdf_cycles = 2,
210 };
211
ek_add_device_nand(void)212 static void __init ek_add_device_nand(void)
213 {
214 ek_nand_data.bus_width_16 = board_have_nand_16bit();
215 /* setup bus-width (8 or 16) */
216 if (ek_nand_data.bus_width_16)
217 ek_nand_smc_config.mode |= AT91_SMC_DBW_16;
218 else
219 ek_nand_smc_config.mode |= AT91_SMC_DBW_8;
220
221 /* configure chip-select 3 (NAND) */
222 sam9_smc_configure(0, 3, &ek_nand_smc_config);
223
224 at91_add_device_nand(&ek_nand_data);
225 }
226
227
228 /*
229 * I2C devices
230 */
231 static struct at24_platform_data at24c512 = {
232 .byte_len = SZ_512K / 8,
233 .page_size = 128,
234 .flags = AT24_FLAG_ADDR16,
235 };
236
237
238 static struct i2c_board_info __initdata ek_i2c_devices[] = {
239 {
240 I2C_BOARD_INFO("24c512", 0x50),
241 .platform_data = &at24c512,
242 },
243 /* more devices can be added using expansion connectors */
244 };
245
246 /*
247 * LCD Controller
248 */
249 #if defined(CONFIG_FB_ATMEL) || defined(CONFIG_FB_ATMEL_MODULE)
250 static struct fb_videomode at91_tft_vga_modes[] = {
251 {
252 .name = "TX09D50VM1CCA @ 60",
253 .refresh = 60,
254 .xres = 240, .yres = 320,
255 .pixclock = KHZ2PICOS(4965),
256
257 .left_margin = 1, .right_margin = 33,
258 .upper_margin = 1, .lower_margin = 0,
259 .hsync_len = 5, .vsync_len = 1,
260
261 .sync = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
262 .vmode = FB_VMODE_NONINTERLACED,
263 },
264 };
265
266 static struct fb_monspecs at91fb_default_monspecs = {
267 .manufacturer = "HIT",
268 .monitor = "TX09D70VM1CCA",
269
270 .modedb = at91_tft_vga_modes,
271 .modedb_len = ARRAY_SIZE(at91_tft_vga_modes),
272 .hfmin = 15000,
273 .hfmax = 64000,
274 .vfmin = 50,
275 .vfmax = 150,
276 };
277
278 #define AT91SAM9263_DEFAULT_LCDCON2 (ATMEL_LCDC_MEMOR_LITTLE \
279 | ATMEL_LCDC_DISTYPE_TFT \
280 | ATMEL_LCDC_CLKMOD_ALWAYSACTIVE)
281
at91_lcdc_power_control(int on)282 static void at91_lcdc_power_control(int on)
283 {
284 at91_set_gpio_value(AT91_PIN_PA30, on);
285 }
286
287 /* Driver datas */
288 static struct atmel_lcdfb_info __initdata ek_lcdc_data = {
289 .lcdcon_is_backlight = true,
290 .default_bpp = 16,
291 .default_dmacon = ATMEL_LCDC_DMAEN,
292 .default_lcdcon2 = AT91SAM9263_DEFAULT_LCDCON2,
293 .default_monspecs = &at91fb_default_monspecs,
294 .atmel_lcdfb_power_control = at91_lcdc_power_control,
295 .guard_time = 1,
296 };
297
298 #else
299 static struct atmel_lcdfb_info __initdata ek_lcdc_data;
300 #endif
301
302
303 /*
304 * GPIO Buttons
305 */
306 #if defined(CONFIG_KEYBOARD_GPIO) || defined(CONFIG_KEYBOARD_GPIO_MODULE)
307 static struct gpio_keys_button ek_buttons[] = {
308 { /* BP1, "leftclic" */
309 .code = BTN_LEFT,
310 .gpio = AT91_PIN_PC5,
311 .active_low = 1,
312 .desc = "left_click",
313 .wakeup = 1,
314 },
315 { /* BP2, "rightclic" */
316 .code = BTN_RIGHT,
317 .gpio = AT91_PIN_PC4,
318 .active_low = 1,
319 .desc = "right_click",
320 .wakeup = 1,
321 }
322 };
323
324 static struct gpio_keys_platform_data ek_button_data = {
325 .buttons = ek_buttons,
326 .nbuttons = ARRAY_SIZE(ek_buttons),
327 };
328
329 static struct platform_device ek_button_device = {
330 .name = "gpio-keys",
331 .id = -1,
332 .num_resources = 0,
333 .dev = {
334 .platform_data = &ek_button_data,
335 }
336 };
337
ek_add_device_buttons(void)338 static void __init ek_add_device_buttons(void)
339 {
340 at91_set_GPIO_periph(AT91_PIN_PC5, 1); /* left button */
341 at91_set_deglitch(AT91_PIN_PC5, 1);
342 at91_set_GPIO_periph(AT91_PIN_PC4, 1); /* right button */
343 at91_set_deglitch(AT91_PIN_PC4, 1);
344
345 platform_device_register(&ek_button_device);
346 }
347 #else
ek_add_device_buttons(void)348 static void __init ek_add_device_buttons(void) {}
349 #endif
350
351
352 /*
353 * AC97
354 * reset_pin is not connected: NRST
355 */
356 static struct ac97c_platform_data ek_ac97_data = {
357 .reset_pin = -EINVAL,
358 };
359
360
361 /*
362 * LEDs ... these could all be PWM-driven, for variable brightness
363 */
364 static struct gpio_led ek_leds[] = {
365 { /* "right" led, green, userled2 (could be driven by pwm2) */
366 .name = "ds2",
367 .gpio = AT91_PIN_PC29,
368 .active_low = 1,
369 .default_trigger = "nand-disk",
370 },
371 { /* "power" led, yellow (could be driven by pwm0) */
372 .name = "ds3",
373 .gpio = AT91_PIN_PB7,
374 .default_trigger = "heartbeat",
375 }
376 };
377
378 /*
379 * PWM Leds
380 */
381 static struct gpio_led ek_pwm_led[] = {
382 /* For now only DS1 is PWM-driven (by pwm1) */
383 {
384 .name = "ds1",
385 .gpio = 1, /* is PWM channel number */
386 .active_low = 1,
387 .default_trigger = "none",
388 }
389 };
390
391 /*
392 * CAN
393 */
sam9263ek_transceiver_switch(int on)394 static void sam9263ek_transceiver_switch(int on)
395 {
396 if (on) {
397 at91_set_gpio_output(AT91_PIN_PA18, 1); /* CANRXEN */
398 at91_set_gpio_output(AT91_PIN_PA19, 0); /* CANRS */
399 } else {
400 at91_set_gpio_output(AT91_PIN_PA18, 0); /* CANRXEN */
401 at91_set_gpio_output(AT91_PIN_PA19, 1); /* CANRS */
402 }
403 }
404
405 static struct at91_can_data ek_can_data = {
406 .transceiver_switch = sam9263ek_transceiver_switch,
407 };
408
ek_board_init(void)409 static void __init ek_board_init(void)
410 {
411 /* Serial */
412 at91_add_device_serial();
413 /* USB Host */
414 at91_add_device_usbh(&ek_usbh_data);
415 /* USB Device */
416 at91_add_device_udc(&ek_udc_data);
417 /* SPI */
418 at91_set_gpio_output(AT91_PIN_PE20, 1); /* select spi0 clock */
419 at91_add_device_spi(ek_spi_devices, ARRAY_SIZE(ek_spi_devices));
420 /* Touchscreen */
421 ek_add_device_ts();
422 /* MMC */
423 at91_add_device_mmc(1, &ek_mmc_data);
424 /* Ethernet */
425 at91_add_device_eth(&ek_macb_data);
426 /* NAND */
427 ek_add_device_nand();
428 /* I2C */
429 at91_add_device_i2c(ek_i2c_devices, ARRAY_SIZE(ek_i2c_devices));
430 /* LCD Controller */
431 at91_add_device_lcdc(&ek_lcdc_data);
432 /* Push Buttons */
433 ek_add_device_buttons();
434 /* AC97 */
435 at91_add_device_ac97(&ek_ac97_data);
436 /* LEDs */
437 at91_gpio_leds(ek_leds, ARRAY_SIZE(ek_leds));
438 at91_pwm_leds(ek_pwm_led, ARRAY_SIZE(ek_pwm_led));
439 /* CAN */
440 at91_add_device_can(&ek_can_data);
441 }
442
443 MACHINE_START(AT91SAM9263EK, "Atmel AT91SAM9263-EK")
444 /* Maintainer: Atmel */
445 .timer = &at91sam926x_timer,
446 .map_io = at91_map_io,
447 .init_early = ek_init_early,
448 .init_irq = at91_init_irq_default,
449 .init_machine = ek_board_init,
450 MACHINE_END
451