1 // SPDX-License-Identifier: GPL-2.0+
3 * Qualcomm pm8916 pmic driver
5 * (C) Copyright 2015 Mateusz Kulikowski <mateusz.kulikowski@gmail.com>
9 #include <power/pmic.h>
10 #include <spmi/spmi.h>
13 #define PID_MASK (0xFF << PID_SHIFT)
17 uint32_t usid; /* Slave ID on SPMI bus */
20 static int pm8916_reg_count(struct udevice *dev)
25 static int pm8916_write(struct udevice *dev, uint reg, const uint8_t *buff,
28 struct pm8916_priv *priv = dev_get_priv(dev);
33 return spmi_reg_write(dev->parent, priv->usid,
34 (reg & PID_MASK) >> PID_SHIFT, reg & REG_MASK,
38 static int pm8916_read(struct udevice *dev, uint reg, uint8_t *buff, int len)
40 struct pm8916_priv *priv = dev_get_priv(dev);
46 val = spmi_reg_read(dev->parent, priv->usid,
47 (reg & PID_MASK) >> PID_SHIFT, reg & REG_MASK);
55 static struct dm_pmic_ops pm8916_ops = {
56 .reg_count = pm8916_reg_count,
58 .write = pm8916_write,
61 static const struct udevice_id pm8916_ids[] = {
62 { .compatible = "qcom,spmi-pmic" },
66 static int pm8916_probe(struct udevice *dev)
68 struct pm8916_priv *priv = dev_get_priv(dev);
70 priv->usid = dev_read_addr(dev);
72 if (priv->usid == FDT_ADDR_T_NONE)
78 U_BOOT_DRIVER(pmic_pm8916) = {
79 .name = "pmic_pm8916",
81 .of_match = pm8916_ids,
82 .bind = dm_scan_fdt_dev,
83 .probe = pm8916_probe,
85 .priv_auto_alloc_size = sizeof(struct pm8916_priv),