1/*
  2 *  Atheros PB44 reference board support
  3 *
  4 *  Copyright (C) 2009-2010 Gabor Juhos <juhosg@openwrt.org>
  5 *
  6 *  This program is free software; you can redistribute it and/or modify it
  7 *  under the terms of the GNU General Public License version 2 as published
  8 *  by the Free Software Foundation.
  9 */
 10
 11#include <linux/init.h>
 12#include <linux/platform_device.h>
 13#include <linux/i2c.h>
 14#include <linux/i2c-gpio.h>
 15#include <linux/i2c/pcf857x.h>
 16
 17#include "machtypes.h"
 18#include "dev-gpio-buttons.h"
 19#include "dev-leds-gpio.h"
 20#include "dev-spi.h"
 21#include "dev-usb.h"
 22#include "pci.h"
 23
 24#define PB44_GPIO_I2C_SCL	0
 25#define PB44_GPIO_I2C_SDA	1
 26
 27#define PB44_GPIO_EXP_BASE	16
 28#define PB44_GPIO_SW_RESET	(PB44_GPIO_EXP_BASE + 6)
 29#define PB44_GPIO_SW_JUMP	(PB44_GPIO_EXP_BASE + 8)
 30#define PB44_GPIO_LED_JUMP1	(PB44_GPIO_EXP_BASE + 9)
 31#define PB44_GPIO_LED_JUMP2	(PB44_GPIO_EXP_BASE + 10)
 32
 33#define PB44_KEYS_POLL_INTERVAL		20	/* msecs */
 34#define PB44_KEYS_DEBOUNCE_INTERVAL	(3 * PB44_KEYS_POLL_INTERVAL)
 35
 36static struct i2c_gpio_platform_data pb44_i2c_gpio_data = {
 37	.sda_pin	= PB44_GPIO_I2C_SDA,
 38	.scl_pin	= PB44_GPIO_I2C_SCL,
 39};
 40
 41static struct platform_device pb44_i2c_gpio_device = {
 42	.name		= "i2c-gpio",
 43	.id		= 0,
 44	.dev = {
 45		.platform_data	= &pb44_i2c_gpio_data,
 46	}
 47};
 48
 49static struct pcf857x_platform_data pb44_pcf857x_data = {
 50	.gpio_base	= PB44_GPIO_EXP_BASE,
 51};
 52
 53static struct i2c_board_info pb44_i2c_board_info[] __initdata = {
 54	{
 55		I2C_BOARD_INFO("pcf8575", 0x20),
 56		.platform_data	= &pb44_pcf857x_data,
 57	},
 58};
 59
 60static struct gpio_led pb44_leds_gpio[] __initdata = {
 61	{
 62		.name		= "pb44:amber:jump1",
 63		.gpio		= PB44_GPIO_LED_JUMP1,
 64		.active_low	= 1,
 65	}, {
 66		.name		= "pb44:green:jump2",
 67		.gpio		= PB44_GPIO_LED_JUMP2,
 68		.active_low	= 1,
 69	},
 70};
 71
 72static struct gpio_keys_button pb44_gpio_keys[] __initdata = {
 73	{
 74		.desc		= "soft_reset",
 75		.type		= EV_KEY,
 76		.code		= KEY_RESTART,
 77		.debounce_interval = PB44_KEYS_DEBOUNCE_INTERVAL,
 78		.gpio		= PB44_GPIO_SW_RESET,
 79		.active_low	= 1,
 80	} , {
 81		.desc		= "jumpstart",
 82		.type		= EV_KEY,
 83		.code		= KEY_WPS_BUTTON,
 84		.debounce_interval = PB44_KEYS_DEBOUNCE_INTERVAL,
 85		.gpio		= PB44_GPIO_SW_JUMP,
 86		.active_low	= 1,
 87	}
 88};
 89
 90static struct spi_board_info pb44_spi_info[] = {
 91	{
 92		.bus_num	= 0,
 93		.chip_select	= 0,
 94		.max_speed_hz	= 25000000,
 95		.modalias	= "m25p64",
 96	},
 97};
 98
 99static struct ath79_spi_platform_data pb44_spi_data = {
100	.bus_num		= 0,
101	.num_chipselect		= 1,
102};
103
104static void __init pb44_init(void)
105{
106	i2c_register_board_info(0, pb44_i2c_board_info,
107				ARRAY_SIZE(pb44_i2c_board_info));
108	platform_device_register(&pb44_i2c_gpio_device);
109
110	ath79_register_leds_gpio(-1, ARRAY_SIZE(pb44_leds_gpio),
111				 pb44_leds_gpio);
112	ath79_register_gpio_keys_polled(-1, PB44_KEYS_POLL_INTERVAL,
113					ARRAY_SIZE(pb44_gpio_keys),
114					pb44_gpio_keys);
115	ath79_register_spi(&pb44_spi_data, pb44_spi_info,
116			   ARRAY_SIZE(pb44_spi_info));
117	ath79_register_usb();
118	ath79_register_pci();
119}
120
121MIPS_MACHINE(ATH79_MACH_PB44, "PB44", "Atheros PB44 reference board",
122	     pb44_init);