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Since we have boards using the driver model or not for i2c, use abstraction function to probe the i2c, check the EEPROM and read from EEPROM. Signed-off-by: Enrico Leto <enrico.leto@siemens.com>
52 lines
1 KiB
C
52 lines
1 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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*
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* Read EEPROM data
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* (C) Copyright 2024 Siemens AG
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*/
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#include <dm/uclass.h>
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#include <i2c.h>
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#include "eeprom.h"
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#if CONFIG_IS_ENABLED(DM_I2C)
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static struct udevice *i2c_dev;
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#endif
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/* Probe I2C and set-up EEPROM */
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int siemens_ee_setup(void)
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{
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#if CONFIG_IS_ENABLED(DM_I2C)
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struct udevice *bus;
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int ret;
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ret = uclass_get_device_by_seq(UCLASS_I2C, SIEMENS_EE_I2C_BUS, &bus);
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if (ret)
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goto err;
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ret = dm_i2c_probe(bus, SIEMENS_EE_I2C_ADDR, 0, &i2c_dev);
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if (ret)
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goto err;
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if (i2c_set_chip_offset_len(i2c_dev, 2))
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goto err;
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#else
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i2c_set_bus_num(SIEMENS_EE_I2C_BUS);
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if (i2c_probe(SIEMENS_EE_I2C_ADDR))
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goto err;
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#endif
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return 0;
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err:
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printf("Could not probe the EEPROM; something fundamentally wrong on the I2C bus.\n");
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return 1;
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}
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/* Read data from EEPROM */
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int siemens_ee_read_data(uint address, uchar *buffer, int len)
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{
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#if CONFIG_IS_ENABLED(DM_I2C)
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return dm_i2c_read(i2c_dev, address, buffer, len);
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#else
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return i2c_read(SIEMENS_EE_I2C_ADDR, address, 2, buffer, len);
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#endif
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}
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