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// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
/*
* Copyright (c) 2018 Microsemi Coprporation
*/
#include <common.h>
#include <asm/io.h>
#include <spi.h>
#include <linux/bitops.h>
void external_cs_manage(struct udevice *dev, bool enable)
{
u32 cs = spi_chip_select(dev);
/* IF_SI0_OWNER, select the owner of the SI interface
* Encoding: 0: SI Slave
* 1: SI Boot Master
* 2: SI Master Controller
*/
if (!enable) {
writel(ICPU_SW_MODE_SW_PIN_CTRL_MODE |
ICPU_SW_MODE_SW_SPI_CS(BIT(cs)),
BASE_CFG + ICPU_SW_MODE);
clrsetbits_le32(BASE_CFG + ICPU_GENERAL_CTRL,
ICPU_GENERAL_CTRL_IF_SI_OWNER_M,
ICPU_GENERAL_CTRL_IF_SI_OWNER(2));
} else {
writel(0, BASE_CFG + ICPU_SW_MODE);
clrsetbits_le32(BASE_CFG + ICPU_GENERAL_CTRL,
ICPU_GENERAL_CTRL_IF_SI_OWNER_M,
ICPU_GENERAL_CTRL_IF_SI_OWNER(1));
}
}
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