fd534e9b5f
Based on 1 normalized pattern(s): 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 51 franklin st fifth floor boston ma 02110 1301 usa extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 50 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Reviewed-by: Allison Randal <allison@lohutok.net> Reviewed-by: Richard Fontana <rfontana@redhat.com> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190523091649.499889647@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
175 lines
4 KiB
C
175 lines
4 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
|
|
/*
|
|
* arch/arm/plat-mxc/iomux-v1.c
|
|
*
|
|
* Copyright (C) 2004 Sascha Hauer, Synertronixx GmbH
|
|
* Copyright (C) 2009 Uwe Kleine-Koenig, Pengutronix
|
|
*
|
|
* Common code for i.MX1, i.MX21 and i.MX27
|
|
*/
|
|
|
|
#include <linux/errno.h>
|
|
#include <linux/init.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/module.h>
|
|
#include <linux/string.h>
|
|
#include <linux/gpio.h>
|
|
|
|
#include <asm/mach/map.h>
|
|
|
|
#include "hardware.h"
|
|
#include "iomux-v1.h"
|
|
|
|
static void __iomem *imx_iomuxv1_baseaddr;
|
|
static unsigned imx_iomuxv1_numports;
|
|
|
|
static inline unsigned long imx_iomuxv1_readl(unsigned offset)
|
|
{
|
|
return imx_readl(imx_iomuxv1_baseaddr + offset);
|
|
}
|
|
|
|
static inline void imx_iomuxv1_writel(unsigned long val, unsigned offset)
|
|
{
|
|
imx_writel(val, imx_iomuxv1_baseaddr + offset);
|
|
}
|
|
|
|
static inline void imx_iomuxv1_rmwl(unsigned offset,
|
|
unsigned long mask, unsigned long value)
|
|
{
|
|
unsigned long reg = imx_iomuxv1_readl(offset);
|
|
|
|
reg &= ~mask;
|
|
reg |= value;
|
|
|
|
imx_iomuxv1_writel(reg, offset);
|
|
}
|
|
|
|
static inline void imx_iomuxv1_set_puen(
|
|
unsigned int port, unsigned int pin, int on)
|
|
{
|
|
unsigned long mask = 1 << pin;
|
|
|
|
imx_iomuxv1_rmwl(MXC_PUEN(port), mask, on ? mask : 0);
|
|
}
|
|
|
|
static inline void imx_iomuxv1_set_ddir(
|
|
unsigned int port, unsigned int pin, int out)
|
|
{
|
|
unsigned long mask = 1 << pin;
|
|
|
|
imx_iomuxv1_rmwl(MXC_DDIR(port), mask, out ? mask : 0);
|
|
}
|
|
|
|
static inline void imx_iomuxv1_set_gpr(
|
|
unsigned int port, unsigned int pin, int af)
|
|
{
|
|
unsigned long mask = 1 << pin;
|
|
|
|
imx_iomuxv1_rmwl(MXC_GPR(port), mask, af ? mask : 0);
|
|
}
|
|
|
|
static inline void imx_iomuxv1_set_gius(
|
|
unsigned int port, unsigned int pin, int inuse)
|
|
{
|
|
unsigned long mask = 1 << pin;
|
|
|
|
imx_iomuxv1_rmwl(MXC_GIUS(port), mask, inuse ? mask : 0);
|
|
}
|
|
|
|
static inline void imx_iomuxv1_set_ocr(
|
|
unsigned int port, unsigned int pin, unsigned int ocr)
|
|
{
|
|
unsigned long shift = (pin & 0xf) << 1;
|
|
unsigned long mask = 3 << shift;
|
|
unsigned long value = ocr << shift;
|
|
unsigned long offset = pin < 16 ? MXC_OCR1(port) : MXC_OCR2(port);
|
|
|
|
imx_iomuxv1_rmwl(offset, mask, value);
|
|
}
|
|
|
|
static inline void imx_iomuxv1_set_iconfa(
|
|
unsigned int port, unsigned int pin, unsigned int aout)
|
|
{
|
|
unsigned long shift = (pin & 0xf) << 1;
|
|
unsigned long mask = 3 << shift;
|
|
unsigned long value = aout << shift;
|
|
unsigned long offset = pin < 16 ? MXC_ICONFA1(port) : MXC_ICONFA2(port);
|
|
|
|
imx_iomuxv1_rmwl(offset, mask, value);
|
|
}
|
|
|
|
static inline void imx_iomuxv1_set_iconfb(
|
|
unsigned int port, unsigned int pin, unsigned int bout)
|
|
{
|
|
unsigned long shift = (pin & 0xf) << 1;
|
|
unsigned long mask = 3 << shift;
|
|
unsigned long value = bout << shift;
|
|
unsigned long offset = pin < 16 ? MXC_ICONFB1(port) : MXC_ICONFB2(port);
|
|
|
|
imx_iomuxv1_rmwl(offset, mask, value);
|
|
}
|
|
|
|
int mxc_gpio_mode(int gpio_mode)
|
|
{
|
|
unsigned int pin = gpio_mode & GPIO_PIN_MASK;
|
|
unsigned int port = (gpio_mode & GPIO_PORT_MASK) >> GPIO_PORT_SHIFT;
|
|
unsigned int ocr = (gpio_mode & GPIO_OCR_MASK) >> GPIO_OCR_SHIFT;
|
|
unsigned int aout = (gpio_mode >> GPIO_AOUT_SHIFT) & 3;
|
|
unsigned int bout = (gpio_mode >> GPIO_BOUT_SHIFT) & 3;
|
|
|
|
if (port >= imx_iomuxv1_numports)
|
|
return -EINVAL;
|
|
|
|
/* Pullup enable */
|
|
imx_iomuxv1_set_puen(port, pin, gpio_mode & GPIO_PUEN);
|
|
|
|
/* Data direction */
|
|
imx_iomuxv1_set_ddir(port, pin, gpio_mode & GPIO_OUT);
|
|
|
|
/* Primary / alternate function */
|
|
imx_iomuxv1_set_gpr(port, pin, gpio_mode & GPIO_AF);
|
|
|
|
/* use as gpio? */
|
|
imx_iomuxv1_set_gius(port, pin, !(gpio_mode & (GPIO_PF | GPIO_AF)));
|
|
|
|
imx_iomuxv1_set_ocr(port, pin, ocr);
|
|
|
|
imx_iomuxv1_set_iconfa(port, pin, aout);
|
|
|
|
imx_iomuxv1_set_iconfb(port, pin, bout);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int imx_iomuxv1_setup_multiple(const int *list, unsigned count)
|
|
{
|
|
size_t i;
|
|
int ret = 0;
|
|
|
|
for (i = 0; i < count; ++i) {
|
|
ret = mxc_gpio_mode(list[i]);
|
|
|
|
if (ret)
|
|
return ret;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
int mxc_gpio_setup_multiple_pins(const int *pin_list, unsigned count,
|
|
const char *label)
|
|
{
|
|
int ret;
|
|
|
|
ret = imx_iomuxv1_setup_multiple(pin_list, count);
|
|
return ret;
|
|
}
|
|
|
|
int __init imx_iomuxv1_init(void __iomem *base, int numports)
|
|
{
|
|
imx_iomuxv1_baseaddr = base;
|
|
imx_iomuxv1_numports = numports;
|
|
|
|
return 0;
|
|
}
|