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