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/*
*
* (C) Copyright 2009-2010 Freescale Semiconductor, Inc.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <common.h>
#include <asm/arch/mx28.h>
#include <asm/arch/regs-pinctrl.h>
#include <asm/arch/pinctrl.h>
void pin_gpio_direction(u32 id, u32 output)
{
u32 addr;
u32 bank = PINID_2_BANK(id);
u32 pin = PINID_2_PIN(id);
addr = REGS_PINCTRL_BASE + HW_PINCTRL_DOE0;
addr += 0x10 * bank;
if (output)
REG_SET_ADDR(addr, 1 << pin);
else
REG_CLR_ADDR(addr, 1 << pin);
}
u32 pin_gpio_get(u32 id)
{
u32 addr, val;
u32 bank = PINID_2_BANK(id);
u32 pin = PINID_2_PIN(id);
addr = REGS_PINCTRL_BASE + HW_PINCTRL_DIN0;
addr += 0x10 * bank;
val = REG_RD_ADDR(addr);
return (val & (1 << pin)) >> pin;
}
void pin_gpio_set(u32 id, u32 val)
{
u32 addr;
u32 bank = PINID_2_BANK(id);
u32 pin = PINID_2_PIN(id);
addr = REGS_PINCTRL_BASE + HW_PINCTRL_DOUT0;
addr += 0x10 * bank;
if (val)
REG_SET_ADDR(addr, 1 << pin);
else
REG_CLR_ADDR(addr, 1 << pin);
}
void pin_set_strength(u32 id, enum pad_strength strength)
{
u32 addr;
u32 bank = PINID_2_BANK(id);
u32 pin = PINID_2_PIN(id);
addr = REGS_PINCTRL_BASE + HW_PINCTRL_DRIVE0;
addr += 0x40 * bank + 0x10 * (pin >> 3);
pin &= 0x7;
REG_CLR_ADDR(addr, 0x3 << (pin * 4));
REG_SET_ADDR(addr, strength << (pin * 4));
}
void pin_set_voltage(u32 id, enum pad_voltage volt)
{
u32 addr;
u32 bank = PINID_2_BANK(id);
u32 pin = PINID_2_PIN(id);
addr = REGS_PINCTRL_BASE + HW_PINCTRL_DRIVE0;
addr += 0x40 * bank + 0x10 * (pin >> 3);
pin &= 0x7;
if (volt == PAD_1V8)
REG_CLR_ADDR(addr, 1 << (pin * 4 + 2));
else
REG_SET_ADDR(addr, 1 << (pin * 4 + 2));
}
void pin_set_pullup(u32 id, u32 pullup)
{
u32 addr;
u32 bank = PINID_2_BANK(id);
u32 pin = PINID_2_PIN(id);
addr = REGS_PINCTRL_BASE + HW_PINCTRL_PULL0;
addr += 0x10 * bank;
if (pullup)
REG_SET_ADDR(addr, 1 << pin);
else
REG_CLR_ADDR(addr, 1 << pin);
}
void pin_set_type(u32 id, enum pin_fun cfg)
{
u32 addr;
u32 bank = PINID_2_BANK(id);
u32 pin = PINID_2_PIN(id);
addr = REGS_PINCTRL_BASE + HW_PINCTRL_MUXSEL0;
addr += 0x20 * bank + 0x10 * (pin >> 4);
pin &= 0xf;
REG_CLR_ADDR(addr, 0x3 << (pin * 2));
REG_SET_ADDR(addr, cfg << (pin * 2));
}
void pin_set_group(struct pin_group *pin_group)
{
u32 p;
struct pin_desc *pin;
for (p = 0; p < pin_group->nr_pins; p++) {
pin = &pin_group->pins[p];
pin_set_type(pin->id, pin->fun);
pin_set_strength(pin->id, pin->strength);
pin_set_voltage(pin->id, pin->voltage);
pin_set_pullup(pin->id, pin->pullup);
}
}
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