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// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Marvell 88E6xxx Switch Global (1) Registers support
*
* Copyright (c) 2008 Marvell Semiconductor
*
* Copyright (c) 2016-2017 Savoir-faire Linux Inc.
* Vivien Didelot <vivien.didelot@savoirfairelinux.com>
*/
#include <clock.h>
#include <linux/bitfield.h>
#include "chip.h"
#include "global1.h"
static int mv88e6xxx_g1_read(struct mv88e6xxx_chip *chip, int reg, u16 *val)
{
int addr = chip->info->global1_addr;
return mv88e6xxx_read(chip, addr, reg, val);
}
void mv88e6xxx_g1_wait_eeprom_done(struct mv88e6xxx_chip *chip)
{
const uint64_t start = get_time_ns();
const uint64_t timeout = SECOND;
u16 val;
int err;
/* Wait up to 1 second for the switch to finish reading the
* EEPROM.
*/
while (!is_timeout(start, timeout)) {
err = mv88e6xxx_g1_read(chip, MV88E6XXX_G1_STS, &val);
if (err) {
dev_err(chip->dev, "Error reading status\n");
return;
}
if (val != 0xFFFF && /* switch will return 0xffff until
* EEPROM is loaded
*/
val & BIT(MV88E6XXX_G1_STS_IRQ_EEPROM_DONE))
return;
mdelay(2);
}
dev_err(chip->dev, "Timeout waiting for EEPROM done\n");
}
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