mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-25 04:23:46 +00:00
83d290c56f
When U-Boot started using SPDX tags we were among the early adopters and there weren't a lot of other examples to borrow from. So we picked the area of the file that usually had a full license text and replaced it with an appropriate SPDX-License-Identifier: entry. Since then, the Linux Kernel has adopted SPDX tags and they place it as the very first line in a file (except where shebangs are used, then it's second line) and with slightly different comment styles than us. In part due to community overlap, in part due to better tag visibility and in part for other minor reasons, switch over to that style. This commit changes all instances where we have a single declared license in the tag as both the before and after are identical in tag contents. There's also a few places where I found we did not have a tag and have introduced one. Signed-off-by: Tom Rini <trini@konsulko.com>
111 lines
2.5 KiB
C
111 lines
2.5 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 <i2c.h>
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#include <linux/compiler.h>
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int pmic_reg_write(struct pmic *p, u32 reg, u32 val)
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{
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unsigned char buf[4] = { 0 };
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if (check_reg(p, reg))
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return -EINVAL;
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I2C_SET_BUS(p->bus);
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switch (pmic_i2c_tx_num) {
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case 3:
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if (p->sensor_byte_order == PMIC_SENSOR_BYTE_ORDER_BIG) {
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buf[2] = (cpu_to_le32(val) >> 16) & 0xff;
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buf[1] = (cpu_to_le32(val) >> 8) & 0xff;
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buf[0] = cpu_to_le32(val) & 0xff;
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} else {
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buf[0] = (cpu_to_le32(val) >> 16) & 0xff;
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buf[1] = (cpu_to_le32(val) >> 8) & 0xff;
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buf[2] = cpu_to_le32(val) & 0xff;
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}
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break;
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case 2:
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if (p->sensor_byte_order == PMIC_SENSOR_BYTE_ORDER_BIG) {
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buf[1] = (cpu_to_le32(val) >> 8) & 0xff;
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buf[0] = cpu_to_le32(val) & 0xff;
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} else {
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buf[0] = (cpu_to_le32(val) >> 8) & 0xff;
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buf[1] = cpu_to_le32(val) & 0xff;
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}
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break;
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case 1:
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buf[0] = cpu_to_le32(val) & 0xff;
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break;
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default:
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printf("%s: invalid tx_num: %d", __func__, pmic_i2c_tx_num);
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return -EINVAL;
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}
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return i2c_write(pmic_i2c_addr, reg, 1, buf, pmic_i2c_tx_num);
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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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unsigned char buf[4] = { 0 };
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u32 ret_val = 0;
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int ret;
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if (check_reg(p, reg))
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return -EINVAL;
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I2C_SET_BUS(p->bus);
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ret = i2c_read(pmic_i2c_addr, reg, 1, buf, pmic_i2c_tx_num);
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if (ret)
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return ret;
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switch (pmic_i2c_tx_num) {
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case 3:
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if (p->sensor_byte_order == PMIC_SENSOR_BYTE_ORDER_BIG)
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ret_val = le32_to_cpu(buf[2] << 16
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| buf[1] << 8 | buf[0]);
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else
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ret_val = le32_to_cpu(buf[0] << 16 |
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buf[1] << 8 | buf[2]);
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break;
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case 2:
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if (p->sensor_byte_order == PMIC_SENSOR_BYTE_ORDER_BIG)
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ret_val = le32_to_cpu(buf[1] << 8 | buf[0]);
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else
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ret_val = le32_to_cpu(buf[0] << 8 | buf[1]);
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break;
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case 1:
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ret_val = le32_to_cpu(buf[0]);
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break;
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default:
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printf("%s: invalid tx_num: %d", __func__, pmic_i2c_tx_num);
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return -EINVAL;
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}
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memcpy(val, &ret_val, sizeof(ret_val));
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return 0;
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}
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int pmic_probe(struct pmic *p)
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{
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i2c_set_bus_num(p->bus);
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debug("Bus: %d PMIC:%s probed!\n", p->bus, p->name);
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if (i2c_probe(pmic_i2c_addr)) {
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printf("Can't find PMIC:%s\n", p->name);
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return -ENODEV;
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}
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return 0;
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}
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