/*
 *  Atheros PB44 reference board support
 *
 *  Copyright (C) 2009-2010 Gabor Juhos <juhosg@openwrt.org>
 *
 *  This program is free software; you can redistribute it and/or modify it
 *  under the terms of the GNU General Public License version 2 as published
 *  by the Free Software Foundation.
 */

#include <linux/delay.h>
#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/i2c.h>
#include <linux/i2c-gpio.h>
#include <linux/i2c/pcf857x.h>
#include <linux/i2c/pcf857x.h>
#include <linux/spi/flash.h>
#include <linux/spi/vsc7385.h>

#include <asm/mach-ath79/ar71xx_regs.h>
#include <asm/mach-ath79/ath79.h>

#include "dev-eth.h"
#include "dev-gpio-buttons.h"
#include "dev-leds-gpio.h"
#include "dev-spi.h"
#include "dev-usb.h"
#include "machtypes.h"
#include "pci.h"

#define PB44_GPIO_I2C_SCL	0
#define PB44_GPIO_I2C_SDA	1

#define PB44_PCF8757_VSC7395_CS	0
#define PB44_PCF8757_STEREO_CS	1
#define PB44_PCF8757_SLIC_CS0	2
#define PB44_PCF8757_SLIC_TEST	3
#define PB44_PCF8757_SLIC_INT0	4
#define PB44_PCF8757_SLIC_INT1	5
#define PB44_PCF8757_SW_RESET	6
#define PB44_PCF8757_SW_JUMP	8
#define PB44_PCF8757_LED_JUMP1	9
#define PB44_PCF8757_LED_JUMP2	10
#define PB44_PCF8757_TP24	11
#define PB44_PCF8757_TP25	12
#define PB44_PCF8757_TP26	13
#define PB44_PCF8757_TP27	14
#define PB44_PCF8757_TP28	15

#define PB44_GPIO_EXP_BASE	16
#define PB44_GPIO_VSC7395_CS	(PB44_GPIO_EXP_BASE + PB44_PCF8757_VSC7395_CS)
#define PB44_GPIO_SW_RESET	(PB44_GPIO_EXP_BASE + 6)
#define PB44_GPIO_SW_JUMP	(PB44_GPIO_EXP_BASE + 8)
#define PB44_GPIO_LED_JUMP1	(PB44_GPIO_EXP_BASE + 9)
#define PB44_GPIO_LED_JUMP2	(PB44_GPIO_EXP_BASE + 10)

#define PB44_KEYS_POLL_INTERVAL		20	/* msecs */
#define PB44_KEYS_DEBOUNCE_INTERVAL	(3 * PB44_KEYS_POLL_INTERVAL)

static struct i2c_gpio_platform_data pb44_i2c_gpio_data = {
	.sda_pin	= PB44_GPIO_I2C_SDA,
	.scl_pin	= PB44_GPIO_I2C_SCL,
};

static struct platform_device pb44_i2c_gpio_device = {
	.name		= "i2c-gpio",
	.id		= 0,
	.dev = {
		.platform_data	= &pb44_i2c_gpio_data,
	}
};

static struct pcf857x_platform_data pb44_pcf857x_data = {
	.gpio_base	= PB44_GPIO_EXP_BASE,
};

static struct i2c_board_info pb44_i2c_board_info[] __initdata = {
	{
		I2C_BOARD_INFO("pcf8575", 0x20),
		.platform_data	= &pb44_pcf857x_data,
	},
};

static struct gpio_led pb44_leds_gpio[] __initdata = {
	{
		.name		= "pb44:amber:jump1",
		.gpio		= PB44_GPIO_LED_JUMP1,
		.active_low	= 1,
	}, {
		.name		= "pb44:green:jump2",
		.gpio		= PB44_GPIO_LED_JUMP2,
		.active_low	= 1,
	},
};

static struct gpio_keys_button pb44_gpio_keys[] __initdata = {
	{
		.desc		= "soft_reset",
		.type		= EV_KEY,
		.code		= KEY_RESTART,
		.debounce_interval = PB44_KEYS_DEBOUNCE_INTERVAL,
		.gpio		= PB44_GPIO_SW_RESET,
		.active_low	= 1,
	} , {
		.desc		= "jumpstart",
		.type		= EV_KEY,
		.code		= KEY_WPS_BUTTON,
		.debounce_interval = PB44_KEYS_DEBOUNCE_INTERVAL,
		.gpio		= PB44_GPIO_SW_JUMP,
		.active_low	= 1,
	}
};

static struct ath79_spi_controller_data pb44_spi0_data = {
	.cs_type = ATH79_SPI_CS_TYPE_INTERNAL,
	.cs_line = 0,
};

static struct ath79_spi_controller_data pb44_spi1_data = {
	.cs_type = ATH79_SPI_CS_TYPE_GPIO,
	.cs_line = PB44_GPIO_VSC7395_CS,
};

static void pb44_vsc7395_reset(void)
{
	ath79_device_reset_set(AR71XX_RESET_GE1_PHY);
	udelay(10);
	ath79_device_reset_clear(AR71XX_RESET_GE1_PHY);
	mdelay(50);
}

static struct vsc7385_platform_data pb44_vsc7395_data = {
	.reset		= pb44_vsc7395_reset,
	.ucode_name	= "vsc7395_ucode_pb44.bin",
	.mac_cfg = {
		.tx_ipg		= 6,
		.bit2		= 1,
		.clk_sel	= 0,
	},
};

static const char *pb44_part_probes[] = {
	"RedBoot",
	NULL,
};

static struct flash_platform_data pb44_flash_data = {
	.part_probes	= pb44_part_probes,
};

static struct spi_board_info pb44_spi_info[] = {
	{
		.bus_num	= 0,
		.chip_select	= 0,
		.max_speed_hz	= 25000000,
		.modalias	= "m25p64",
		.platform_data	= &pb44_flash_data,
		.controller_data = &pb44_spi0_data,
	},
	{
		.bus_num	= 0,
		.chip_select	= 1,
		.max_speed_hz	= 25000000,
		.modalias	= "spi-vsc7385",
		.platform_data	= &pb44_vsc7395_data,
		.controller_data = &pb44_spi1_data,
	}
};

static struct ath79_spi_platform_data pb44_spi_data = {
	.bus_num		= 0,
	.num_chipselect		= 2,
};

#define PB44_WAN_PHYMASK	BIT(0)
#define PB44_LAN_PHYMASK	0
#define PB44_MDIO_PHYMASK	(PB44_LAN_PHYMASK | PB44_WAN_PHYMASK)

static void __init pb44_init(void)
{
	i2c_register_board_info(0, pb44_i2c_board_info,
				ARRAY_SIZE(pb44_i2c_board_info));
	platform_device_register(&pb44_i2c_gpio_device);

	ath79_register_leds_gpio(-1, ARRAY_SIZE(pb44_leds_gpio),
				 pb44_leds_gpio);
	ath79_register_gpio_keys_polled(-1, PB44_KEYS_POLL_INTERVAL,
					ARRAY_SIZE(pb44_gpio_keys),
					pb44_gpio_keys);
	ath79_register_spi(&pb44_spi_data, pb44_spi_info,
			   ARRAY_SIZE(pb44_spi_info));
	ath79_register_usb();
	ath79_register_pci();

	ath79_register_mdio(0, ~PB44_MDIO_PHYMASK);

	ath79_init_mac(ath79_eth0_data.mac_addr, ath79_mac_base, 0);
	ath79_eth0_data.phy_if_mode = PHY_INTERFACE_MODE_RGMII;
	ath79_eth0_data.phy_mask = PB44_WAN_PHYMASK;

	ath79_register_eth(0);

	ath79_init_mac(ath79_eth1_data.mac_addr, ath79_mac_base, 1);
	ath79_eth1_data.phy_if_mode = PHY_INTERFACE_MODE_RGMII;
	ath79_eth1_data.speed = SPEED_1000;
	ath79_eth1_data.duplex = DUPLEX_FULL;
	ath79_eth1_pll_data.pll_1000 = 0x110000;

	ath79_register_eth(1);
}

MIPS_MACHINE(ATH79_MACH_PB44, "PB44", "Atheros PB44 reference board",
	     pb44_init);