1 // SPDX-License-Identifier: GPL-2.0
3 * maxim_codec.c -- MAXIM CODEC Common driver
5 * Copyright 2011 Maxim Integrated Products
15 #include <asm/arch/clk.h>
16 #include <asm/arch/cpu.h>
17 #include <asm/arch/power.h>
18 #include "maxim_codec.h"
21 * Writes value to a device register through i2c
23 * @param priv Private data for driver
24 * @param reg reg number to be write
25 * @param data data to be writen to the above registor
27 * @return int value 1 for change, 0 for no change or negative error code.
29 int maxim_i2c_write(struct maxim_priv *priv, unsigned int reg,
32 debug("%s: Write Addr : 0x%02X, Data : 0x%02X\n",
34 return dm_i2c_write(priv->dev, reg, &data, 1);
38 * Read a value from a device register through i2c
40 * @param priv Private data for driver
41 * @param reg reg number to be read
42 * @param data address of read data to be stored
44 * @return int value 0 for success, -1 in case of error.
46 unsigned int maxim_i2c_read(struct maxim_priv *priv, unsigned int reg,
51 return dm_i2c_read(priv->dev, reg, data, 1);
53 debug("%s: Error while reading register %#04x\n",
62 * update device register bits through i2c
64 * @param priv Private data for driver
65 * @param reg codec register
66 * @param mask register mask
67 * @param value new value
69 * @return int value 0 for success, non-zero error code.
71 int maxim_bic_or(struct maxim_priv *priv, unsigned int reg, unsigned char mask,
75 unsigned char old, new;
77 if (maxim_i2c_read(priv, reg, &old) != 0)
79 new = (old & ~mask) | (value & mask);
80 change = (old != new) ? 1 : 0;
82 ret = maxim_i2c_write(priv, reg, new);