mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-09-07 05:13:21 +09:00
64 lines
1.5 KiB
C
64 lines
1.5 KiB
C
![]() |
/*
|
||
|
* (C) Copyright 2014 - 2015 Xilinx, Inc.
|
||
|
* Michal Simek <michal.simek@xilinx.com>
|
||
|
*
|
||
|
* SPDX-License-Identifier: GPL-2.0+
|
||
|
*/
|
||
|
|
||
|
#include <common.h>
|
||
|
#include <asm/io.h>
|
||
|
#include <malloc.h>
|
||
|
#include <asm/arch/hardware.h>
|
||
|
#include <asm/arch/sys_proto.h>
|
||
|
#include <asm/arch/clk.h>
|
||
|
|
||
|
/*
|
||
|
* zynq_slcr_mio_get_status - Get the status of MIO peripheral.
|
||
|
*
|
||
|
* @peri_name: Name of the peripheral for checking MIO status
|
||
|
* @get_pins: Pointer to array of get pin for this peripheral
|
||
|
* @num_pins: Number of pins for this peripheral
|
||
|
* @mask: Mask value
|
||
|
* @check_val: Required check value to get the status of periph
|
||
|
*/
|
||
|
struct zynq_slcr_mio_get_status {
|
||
|
const char *peri_name;
|
||
|
const int *get_pins;
|
||
|
int num_pins;
|
||
|
u32 mask;
|
||
|
u32 check_val;
|
||
|
};
|
||
|
|
||
|
static const struct zynq_slcr_mio_get_status mio_periphs[] = {
|
||
|
};
|
||
|
|
||
|
/*
|
||
|
* zynq_slcr_get_mio_pin_status - Get the MIO pin status of peripheral.
|
||
|
*
|
||
|
* @periph: Name of the peripheral
|
||
|
*
|
||
|
* Returns count to indicate the number of pins configured for the
|
||
|
* given @periph.
|
||
|
*/
|
||
|
int zynq_slcr_get_mio_pin_status(const char *periph)
|
||
|
{
|
||
|
const struct zynq_slcr_mio_get_status *mio_ptr;
|
||
|
int val, i, j;
|
||
|
int mio = 0;
|
||
|
|
||
|
for (i = 0; i < ARRAY_SIZE(mio_periphs); i++) {
|
||
|
if (strcmp(periph, mio_periphs[i].peri_name) == 0) {
|
||
|
mio_ptr = &mio_periphs[i];
|
||
|
for (j = 0; j < mio_ptr->num_pins; j++) {
|
||
|
val = readl(&slcr_base->mio_pin
|
||
|
[mio_ptr->get_pins[j]]);
|
||
|
if ((val & mio_ptr->mask) == mio_ptr->check_val)
|
||
|
mio++;
|
||
|
}
|
||
|
break;
|
||
|
}
|
||
|
}
|
||
|
|
||
|
return mio;
|
||
|
}
|