mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-07 05:34:28 +00:00
653bcce408
Move clock code to compat.c to allow switching to CCF without mixing CCF code with non CCF code. This prepares the field for next commits. Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com>
99 lines
2.2 KiB
C
99 lines
2.2 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
/*
|
|
* Copyright (C) 2016 Atmel Corporation
|
|
* Wenyou.Yang <wenyou.yang@atmel.com>
|
|
*/
|
|
|
|
#include <asm/io.h>
|
|
#include <common.h>
|
|
|
|
/**
|
|
* pmc_read() - read content at address base + off into val
|
|
*
|
|
* @base: base address
|
|
* @off: offset to read from
|
|
* @val: where the content of base + off is stored
|
|
*
|
|
* @return: void
|
|
*/
|
|
void pmc_read(void __iomem *base, unsigned int off, unsigned int *val)
|
|
{
|
|
*val = readl(base + off);
|
|
}
|
|
|
|
/**
|
|
* pmc_write() - write content of val at address base + off
|
|
*
|
|
* @base: base address
|
|
* @off: offset to write to
|
|
* @val: content to be written at base + off
|
|
*
|
|
* @return: void
|
|
*/
|
|
void pmc_write(void __iomem *base, unsigned int off, unsigned int val)
|
|
{
|
|
writel(val, base + off);
|
|
}
|
|
|
|
/**
|
|
* pmc_update_bits() - update a set of bits at address base + off
|
|
*
|
|
* @base: base address
|
|
* @off: offset to be updated
|
|
* @mask: mask of bits to be updated
|
|
* @bits: the new value to be updated
|
|
*
|
|
* @return: void
|
|
*/
|
|
void pmc_update_bits(void __iomem *base, unsigned int off,
|
|
unsigned int mask, unsigned int bits)
|
|
{
|
|
unsigned int tmp;
|
|
|
|
tmp = readl(base + off);
|
|
tmp &= ~mask;
|
|
writel(tmp | (bits & mask), base + off);
|
|
}
|
|
|
|
/**
|
|
* at91_clk_mux_val_to_index() - get parent index in mux table
|
|
*
|
|
* @table: clock mux table
|
|
* @num_parents: clock number of parents
|
|
* @val: clock id who's mux index should be retrieved
|
|
*
|
|
* @return: clock index in mux table or a negative error number in case of
|
|
* failure
|
|
*/
|
|
int at91_clk_mux_val_to_index(const u32 *table, u32 num_parents, u32 val)
|
|
{
|
|
int i;
|
|
|
|
if (!table || !num_parents)
|
|
return -EINVAL;
|
|
|
|
for (i = 0; i < num_parents; i++) {
|
|
if (table[i] == val)
|
|
return i;
|
|
}
|
|
|
|
return -EINVAL;
|
|
}
|
|
|
|
/**
|
|
* at91_clk_mux_index_to_val() - get parent ID corresponding to an entry in
|
|
* clock's mux table
|
|
*
|
|
* @table: clock's mux table
|
|
* @num_parents: clock's number of parents
|
|
* @index: index in mux table which clock's ID should be retrieved
|
|
*
|
|
* @return: clock ID or a negative error number in case of failure
|
|
*/
|
|
int at91_clk_mux_index_to_val(const u32 *table, u32 num_parents, u32 index)
|
|
{
|
|
if (!table || !num_parents || index < 0 || index > num_parents)
|
|
return -EINVAL;
|
|
|
|
return table[index];
|
|
}
|