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e555d4caac
Since both pm8916.c and pm8916_gpio.c are already supporting multiple Qcom SoCs, it makes sense to rename these drivers to pmic_qcom.c and qcom_pmic_gpio.c respectively. Also, these driver can be extended to support additional functionality if required for other Qcom SoCs. Along with this import latest DT binding: qcom,spmi-pmic.txt from Linux kernel and thereby remove pm8916.txt. Signed-off-by: Sumit Garg <sumit.garg@linaro.org>
86 lines
1.7 KiB
C
86 lines
1.7 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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priv->usid = dev_read_addr(dev);
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if (priv->usid == FDT_ADDR_T_NONE)
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return -EINVAL;
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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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