u-boot/arch/arm/mach-imx/mx7ulp/iomux.c
Tom Rini 83d290c56f SPDX: Convert all of our single license tags to Linux Kernel style
When U-Boot started using SPDX tags we were among the early adopters and
there weren't a lot of other examples to borrow from.  So we picked the
area of the file that usually had a full license text and replaced it
with an appropriate SPDX-License-Identifier: entry.  Since then, the
Linux Kernel has adopted SPDX tags and they place it as the very first
line in a file (except where shebangs are used, then it's second line)
and with slightly different comment styles than us.

In part due to community overlap, in part due to better tag visibility
and in part for other minor reasons, switch over to that style.

This commit changes all instances where we have a single declared
license in the tag as both the before and after are identical in tag
contents.  There's also a few places where I found we did not have a tag
and have introduced one.

Signed-off-by: Tom Rini <trini@konsulko.com>
2018-05-07 09:34:12 -04:00

69 lines
2 KiB
C

// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (C) 2016 Freescale Semiconductor, Inc.
*/
#include <common.h>
#include <asm/io.h>
#include <asm/arch/imx-regs.h>
#include <asm/arch/iomux.h>
static void *base = (void *)IOMUXC_BASE_ADDR;
/*
* iomuxc0 base address. In imx7ulp-pins.h,
* the offsets of pins in iomuxc0 are from 0xD000,
* so we set the base address to (0x4103D000 - 0xD000 = 0x41030000)
*/
static void *base_mports = (void *)(AIPS0_BASE + 0x30000);
/*
* configures a single pad in the iomuxer
*/
void mx7ulp_iomux_setup_pad(iomux_cfg_t pad)
{
u32 mux_ctrl_ofs = (pad & MUX_CTRL_OFS_MASK) >> MUX_CTRL_OFS_SHIFT;
u32 mux_mode = (pad & MUX_MODE_MASK) >> MUX_MODE_SHIFT;
u32 sel_input_ofs =
(pad & MUX_SEL_INPUT_OFS_MASK) >> MUX_SEL_INPUT_OFS_SHIFT;
u32 sel_input =
(pad & MUX_SEL_INPUT_MASK) >> MUX_SEL_INPUT_SHIFT;
u32 pad_ctrl_ofs = mux_ctrl_ofs;
u32 pad_ctrl = (pad & MUX_PAD_CTRL_MASK) >> MUX_PAD_CTRL_SHIFT;
debug("[PAD CFG] = 0x%16llX \r\n\tmux_ctl = 0x%X(0x%X) sel_input = 0x%X(0x%X) pad_ctrl = 0x%X(0x%X)\r\n",
pad, mux_ctrl_ofs, mux_mode, sel_input_ofs, sel_input,
pad_ctrl_ofs, pad_ctrl);
if (mux_mode & IOMUX_CONFIG_MPORTS) {
mux_mode &= ~IOMUX_CONFIG_MPORTS;
base = base_mports;
} else {
base = (void *)IOMUXC_BASE_ADDR;
}
__raw_writel(((mux_mode << IOMUXC_PCR_MUX_ALT_SHIFT) &
IOMUXC_PCR_MUX_ALT_MASK), base + mux_ctrl_ofs);
if (sel_input_ofs)
__raw_writel((sel_input << IOMUXC_PSMI_IMUX_ALT_SHIFT),
base + sel_input_ofs);
if (!(pad_ctrl & NO_PAD_CTRL))
__raw_writel(((mux_mode << IOMUXC_PCR_MUX_ALT_SHIFT) &
IOMUXC_PCR_MUX_ALT_MASK) |
(pad_ctrl & (~IOMUXC_PCR_MUX_ALT_MASK)),
base + pad_ctrl_ofs);
}
/* configures a list of pads within declared with IOMUX_PADS macro */
void mx7ulp_iomux_setup_multiple_pads(iomux_cfg_t const *pad_list,
unsigned count)
{
iomux_cfg_t const *p = pad_list;
int i;
for (i = 0; i < count; i++) {
mx7ulp_iomux_setup_pad(*p);
p++;
}
}