06710448c9
Remove trailing blank lines. They serve no purpose and are just editor leftovers. These can cause git to complain about whitespace errors during merges. Signed-off-by: Stephen Hemminger <stephen@networkplumber.org> Signed-off-by: Thomas Monjalon <thomas@monjalon.net>
88 lines
1.4 KiB
C
88 lines
1.4 KiB
C
/* SPDX-License-Identifier: BSD-3-Clause
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* Copyright(c) 2010-2019 Intel Corporation
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*/
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#include "opae_osdep.h"
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#include "opae_i2c.h"
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#include "opae_at24_eeprom.h"
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#define AT24_READ_RETRY 10
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static int at24_eeprom_read_and_try(struct altera_i2c_dev *dev,
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unsigned int slave_addr,
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u32 offset, u8 *buf, u32 len)
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{
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int i;
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int ret = 0;
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for (i = 0; i < AT24_READ_RETRY; i++) {
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ret = i2c_read16(dev, slave_addr, offset,
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buf, len);
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if (ret == 0)
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break;
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opae_udelay(100);
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}
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return ret;
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}
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int at24_eeprom_read(struct altera_i2c_dev *dev, unsigned int slave_addr,
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u32 offset, u8 *buf, int count)
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{
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int len;
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int status;
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int read_count = 0;
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if (!count)
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return count;
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if (count > AT24C512_IO_LIMIT)
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len = AT24C512_IO_LIMIT;
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else
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len = count;
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while (count) {
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status = at24_eeprom_read_and_try(dev, slave_addr, offset,
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buf, len);
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if (status)
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break;
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buf += len;
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offset += len;
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count -= len;
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read_count += len;
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}
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return read_count;
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}
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int at24_eeprom_write(struct altera_i2c_dev *dev, unsigned int slave_addr,
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u32 offset, u8 *buf, int count)
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{
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int len;
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int status;
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int write_count = 0;
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if (!count)
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return count;
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if (count > AT24C512_PAGE_SIZE)
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len = AT24C512_PAGE_SIZE;
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else
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len = count;
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while (count) {
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status = i2c_write16(dev, slave_addr, offset, buf, len);
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if (status)
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break;
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buf += len;
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offset += len;
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count -= len;
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write_count += len;
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}
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return write_count;
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}
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