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https://github.com/smaeul/u-boot.git
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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 commit c8ffd1356d42223cbb8c86280a083cc3c93e6426, reversing changes made to 2ee6f3a5f7550de3599faef9704e166e5dcace35. Reported-by: Jonas Karlman <jonas@kwiboo.se> Signed-off-by: Tom Rini <trini@konsulko.com>
94 lines
2.0 KiB
C
94 lines
2.0 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Qualcomm generic pmic driver
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*
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* (C) Copyright 2015 Mateusz Kulikowski <mateusz.kulikowski@gmail.com>
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*/
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#include <common.h>
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#include <dm.h>
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#include <power/pmic.h>
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#include <spmi/spmi.h>
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#define PID_SHIFT 8
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#define PID_MASK (0xFF << PID_SHIFT)
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#define REG_MASK 0xFF
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struct pmic_qcom_priv {
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uint32_t usid; /* Slave ID on SPMI bus */
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};
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static int pmic_qcom_reg_count(struct udevice *dev)
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{
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return 0xFFFF;
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}
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static int pmic_qcom_write(struct udevice *dev, uint reg, const uint8_t *buff,
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int len)
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{
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struct pmic_qcom_priv *priv = dev_get_priv(dev);
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if (len != 1)
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return -EINVAL;
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return spmi_reg_write(dev->parent, priv->usid,
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(reg & PID_MASK) >> PID_SHIFT, reg & REG_MASK,
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*buff);
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}
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static int pmic_qcom_read(struct udevice *dev, uint reg, uint8_t *buff, int len)
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{
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struct pmic_qcom_priv *priv = dev_get_priv(dev);
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int val;
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if (len != 1)
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return -EINVAL;
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val = spmi_reg_read(dev->parent, priv->usid,
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(reg & PID_MASK) >> PID_SHIFT, reg & REG_MASK);
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if (val < 0)
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return val;
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*buff = val;
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return 0;
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}
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static struct dm_pmic_ops pmic_qcom_ops = {
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.reg_count = pmic_qcom_reg_count,
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.read = pmic_qcom_read,
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.write = pmic_qcom_write,
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};
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static const struct udevice_id pmic_qcom_ids[] = {
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{ .compatible = "qcom,spmi-pmic" },
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{ }
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};
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static int pmic_qcom_probe(struct udevice *dev)
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{
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struct pmic_qcom_priv *priv = dev_get_priv(dev);
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int ret;
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/*
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* dev_read_addr() can't be used here because the reg property actually
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* contains two discrete values, not a single 64-bit address.
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* The address is the first value.
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*/
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ret = ofnode_read_u32_index(dev_ofnode(dev), "reg", 0, &priv->usid);
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if (ret < 0)
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return -EINVAL;
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debug("usid: %d\n", priv->usid);
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return 0;
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}
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U_BOOT_DRIVER(pmic_qcom) = {
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.name = "pmic_qcom",
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.id = UCLASS_PMIC,
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.of_match = pmic_qcom_ids,
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.bind = dm_scan_fdt_dev,
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.probe = pmic_qcom_probe,
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.ops = &pmic_qcom_ops,
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.priv_auto = sizeof(struct pmic_qcom_priv),
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};
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