67 lines
1.8 KiB
C
67 lines
1.8 KiB
C
/*
|
|
* (C) Copyright 2010 Quantenna Communications Inc.
|
|
*
|
|
* See file CREDITS for list of people who contributed to this
|
|
* project.
|
|
*
|
|
* 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 "ruby.h"
|
|
|
|
#define writel_or(b, addr) writel(readl(addr) | (b), (addr))
|
|
#define writel_and(b, addr) writel(readl(addr) & (b), (addr))
|
|
|
|
inline static void gpio_set_mode(u32 reg, u32 offset, u32 cfg)
|
|
{
|
|
u32 tmp = readl(reg);
|
|
tmp &= ~(0x3 << offset);
|
|
tmp |= (cfg << offset);
|
|
writel(tmp, reg);
|
|
}
|
|
|
|
inline static void gpio_config_pin(u32 pin, u32 cfg)
|
|
{
|
|
if(pin < RUBY_GPIO_MODE1_MAX) {
|
|
gpio_set_mode(RUBY_GPIO_MODE1, pin * 2, cfg);
|
|
} else {
|
|
gpio_set_mode(RUBY_GPIO_MODE2, (pin - RUBY_GPIO_MODE1_MAX) * 2, cfg);
|
|
}
|
|
}
|
|
|
|
void gpio_config(u32 pin, u32 cfg)
|
|
{
|
|
if(cfg >= RUBY_GPIO_ALT_INPUT) {
|
|
writel_or(RUBY_BIT(pin), RUBY_GPIO_AFSEL);
|
|
} else {
|
|
writel_and(~RUBY_BIT(pin), RUBY_GPIO_AFSEL);
|
|
}
|
|
gpio_config_pin(pin, cfg & 0x3);
|
|
}
|
|
|
|
void gpio_output(u32 pin, u32 state)
|
|
{
|
|
writel(RUBY_BIT(pin), RUBY_GPIO_OMASK);
|
|
writel(state << pin, RUBY_GPIO_OUTPUT);
|
|
writel(0, RUBY_GPIO_OMASK);
|
|
}
|
|
|
|
u32 gpio_input(u32 pin)
|
|
{
|
|
return ((readl(RUBY_GPIO_INPUT) >> pin) & 0x1);
|
|
}
|
|
|