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d678a59d2d
When bringing in the series 'arm: dts: am62-beagleplay: Fix Beagleplay Ethernet"' I failed to notice that b4 noticed it was based on next and so took that as the base commit and merged that part of next to master. This reverts commitc8ffd1356d, reversing changes made to2ee6f3a5f7. Reported-by: Jonas Karlman <jonas@kwiboo.se> Signed-off-by: Tom Rini <trini@konsulko.com>
73 lines
1.3 KiB
C
73 lines
1.3 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (C) 2011 Samsung Electronics
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* Lukasz Majewski <l.majewski@samsung.com>
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*
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* (C) Copyright 2010
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* Stefano Babic, DENX Software Engineering, sbabic@denx.de
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*
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* (C) Copyright 2008-2009 Freescale Semiconductor, Inc.
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*/
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#include <common.h>
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#include <linux/types.h>
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#include <power/pmic.h>
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#include <spi.h>
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static struct spi_slave *slave;
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static u32 pmic_reg(struct pmic *p, u32 reg, u32 *val, u32 write)
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{
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u32 pmic_tx, pmic_rx;
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u32 tmp;
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if (!slave) {
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slave = spi_setup_slave(p->bus, p->hw.spi.cs, p->hw.spi.clk,
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p->hw.spi.mode);
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if (!slave)
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return -ENODEV;
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}
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if (check_reg(p, reg))
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return -EINVAL;
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if (spi_claim_bus(slave))
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return -EBUSY;
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pmic_tx = p->hw.spi.prepare_tx(reg, val, write);
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tmp = cpu_to_be32(pmic_tx);
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if (spi_xfer(slave, pmic_spi_bitlen, &tmp, &pmic_rx,
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pmic_spi_flags))
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goto err;
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if (write) {
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pmic_tx = p->hw.spi.prepare_tx(reg, val, 0);
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tmp = cpu_to_be32(pmic_tx);
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if (spi_xfer(slave, pmic_spi_bitlen, &tmp, &pmic_rx,
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pmic_spi_flags))
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goto err;
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}
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spi_release_bus(slave);
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*val = cpu_to_be32(pmic_rx);
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return 0;
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err:
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spi_release_bus(slave);
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return -ENOTSUPP;
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}
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int pmic_reg_write(struct pmic *p, u32 reg, u32 val)
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{
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return pmic_reg(p, reg, &val, 1);
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}
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int pmic_reg_read(struct pmic *p, u32 reg, u32 *val)
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{
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return pmic_reg(p, reg, val, 0);
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}
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