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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>
86 lines
1.9 KiB
C
86 lines
1.9 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* maxim_codec.c -- MAXIM CODEC Common driver
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*
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* Copyright 2011 Maxim Integrated Products
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*/
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#include <common.h>
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#include <div64.h>
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#include <i2c.h>
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#include <i2s.h>
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#include <log.h>
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#include <sound.h>
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#include <asm/gpio.h>
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#include <asm/io.h>
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#include "maxim_codec.h"
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/*
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* Writes value to a device register through i2c
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*
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* @param priv Private data for driver
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* @param reg reg number to be write
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* @param data data to be writen to the above registor
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*
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* Return: int value 1 for change, 0 for no change or negative error code.
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*/
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int maxim_i2c_write(struct maxim_priv *priv, unsigned int reg,
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unsigned char data)
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{
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debug("%s: Write Addr : 0x%02X, Data : 0x%02X\n",
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__func__, reg, data);
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return dm_i2c_write(priv->dev, reg, &data, 1);
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}
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/*
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* Read a value from a device register through i2c
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*
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* @param priv Private data for driver
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* @param reg reg number to be read
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* @param data address of read data to be stored
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*
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* Return: int value 0 for success, -1 in case of error.
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*/
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unsigned int maxim_i2c_read(struct maxim_priv *priv, unsigned int reg,
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unsigned char *data)
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{
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int ret;
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return dm_i2c_read(priv->dev, reg, data, 1);
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if (ret != 0) {
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debug("%s: Error while reading register %#04x\n",
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__func__, reg);
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return -1;
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}
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return 0;
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}
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/*
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* update device register bits through i2c
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*
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* @param priv Private data for driver
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* @param reg codec register
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* @param mask register mask
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* @param value new value
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*
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* Return: int value 0 for success, non-zero error code.
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*/
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int maxim_bic_or(struct maxim_priv *priv, unsigned int reg, unsigned char mask,
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unsigned char value)
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{
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int change, ret = 0;
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unsigned char old, new;
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if (maxim_i2c_read(priv, reg, &old) != 0)
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return -1;
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new = (old & ~mask) | (value & mask);
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change = (old != new) ? 1 : 0;
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if (change)
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ret = maxim_i2c_write(priv, reg, new);
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if (ret < 0)
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return ret;
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return change;
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}
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