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/*
* Ralink RT288x SoC specific setup
*
* Copyright (C) 2008-2011 Gabor Juhos <juhosg@openwrt.org>
* Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org>
*
* Parts of this file are based on Ralink's 2.6.21 BSP
*
* 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/kernel.h>
#include <linux/init.h>
#include <linux/module.h>
#include <asm/mach-ralink/common.h>
#include <asm/mach-ralink/ramips_gpio.h>
#include <asm/mach-ralink/rt288x.h>
#include <asm/mach-ralink/rt288x_regs.h>
void __iomem * rt288x_sysc_base;
void __iomem * rt288x_memc_base;
void __init rt288x_detect_sys_type(void)
{
u32 n0;
u32 n1;
u32 id;
n0 = rt288x_sysc_rr(SYSC_REG_CHIP_NAME0);
n1 = rt288x_sysc_rr(SYSC_REG_CHIP_NAME1);
id = rt288x_sysc_rr(SYSC_REG_CHIP_ID);
snprintf(ramips_sys_type, RAMIPS_SYS_TYPE_LEN,
"Ralink %c%c%c%c%c%c%c%c id:%u rev:%u",
(char) (n0 & 0xff), (char) ((n0 >> 8) & 0xff),
(char) ((n0 >> 16) & 0xff), (char) ((n0 >> 24) & 0xff),
(char) (n1 & 0xff), (char) ((n1 >> 8) & 0xff),
(char) ((n1 >> 16) & 0xff), (char) ((n1 >> 24) & 0xff),
(id >> CHIP_ID_ID_SHIFT) & CHIP_ID_ID_MASK,
(id & CHIP_ID_REV_MASK));
}
static struct ramips_gpio_chip rt288x_gpio_chips[] = {
{
.chip = {
.label = "RT288X-GPIO0",
.base = 0,
.ngpio = 24,
},
.regs = {
[RAMIPS_GPIO_REG_INT] = 0x00,
[RAMIPS_GPIO_REG_EDGE] = 0x04,
[RAMIPS_GPIO_REG_RENA] = 0x08,
[RAMIPS_GPIO_REG_FENA] = 0x0c,
[RAMIPS_GPIO_REG_DATA] = 0x20,
[RAMIPS_GPIO_REG_DIR] = 0x24,
[RAMIPS_GPIO_REG_POL] = 0x28,
[RAMIPS_GPIO_REG_SET] = 0x2c,
[RAMIPS_GPIO_REG_RESET] = 0x30,
[RAMIPS_GPIO_REG_TOGGLE] = 0x34,
},
.map_base = RT2880_PIO_BASE,
.map_size = RT2880_PIO_SIZE,
},
{
.chip = {
.label = "RT288X-GPIO1",
.base = 24,
.ngpio = 16,
},
.regs = {
[RAMIPS_GPIO_REG_INT] = 0x38,
[RAMIPS_GPIO_REG_EDGE] = 0x3c,
[RAMIPS_GPIO_REG_RENA] = 0x40,
[RAMIPS_GPIO_REG_FENA] = 0x44,
[RAMIPS_GPIO_REG_DATA] = 0x48,
[RAMIPS_GPIO_REG_DIR] = 0x4c,
[RAMIPS_GPIO_REG_POL] = 0x50,
[RAMIPS_GPIO_REG_SET] = 0x54,
[RAMIPS_GPIO_REG_RESET] = 0x58,
[RAMIPS_GPIO_REG_TOGGLE] = 0x5c,
},
.map_base = RT2880_PIO_BASE,
.map_size = RT2880_PIO_SIZE,
},
{
.chip = {
.label = "RT288X-GPIO2",
.base = 40,
.ngpio = 32,
},
.regs = {
[RAMIPS_GPIO_REG_INT] = 0x60,
[RAMIPS_GPIO_REG_EDGE] = 0x64,
[RAMIPS_GPIO_REG_RENA] = 0x68,
[RAMIPS_GPIO_REG_FENA] = 0x6c,
[RAMIPS_GPIO_REG_DATA] = 0x70,
[RAMIPS_GPIO_REG_DIR] = 0x74,
[RAMIPS_GPIO_REG_POL] = 0x78,
[RAMIPS_GPIO_REG_SET] = 0x7c,
[RAMIPS_GPIO_REG_RESET] = 0x80,
[RAMIPS_GPIO_REG_TOGGLE] = 0x84,
},
.map_base = RT2880_PIO_BASE,
.map_size = RT2880_PIO_SIZE,
},
};
static struct ramips_gpio_data rt288x_gpio_data = {
.chips = rt288x_gpio_chips,
.num_chips = ARRAY_SIZE(rt288x_gpio_chips),
};
static void rt288x_gpio_reserve(int first, int last)
{
for (; first <= last; first++)
gpio_request(first, "reserved");
}
void __init rt288x_gpio_init(u32 mode)
{
rt288x_sysc_wr(mode, SYSC_REG_GPIO_MODE);
ramips_gpio_init(&rt288x_gpio_data);
if ((mode & RT2880_GPIO_MODE_I2C) == 0)
rt288x_gpio_reserve(1, 2);
if ((mode & RT2880_GPIO_MODE_SPI) == 0)
rt288x_gpio_reserve(3, 6);
if ((mode & RT2880_GPIO_MODE_UART0) == 0)
rt288x_gpio_reserve(7, 14);
if ((mode & RT2880_GPIO_MODE_JTAG) == 0)
rt288x_gpio_reserve(17, 21);
if ((mode & RT2880_GPIO_MODE_MDIO) == 0)
rt288x_gpio_reserve(22, 23);
if ((mode & RT2880_GPIO_MODE_SDRAM) == 0)
rt288x_gpio_reserve(24, 39);
if ((mode & RT2880_GPIO_MODE_PCI) == 0)
rt288x_gpio_reserve(40, 71);
}
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