ef642d3e2a
Rouleur has different hph settings for different foundry id. Read foundry id and update hph settings so as to provide same settings to end user. Change-Id: I114047226462ab95e0c93271c3d6099f15af2343 Signed-off-by: Vatsal Bucha <vbucha@codeaurora.org>
129 行
2.9 KiB
C
129 行
2.9 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* Copyright (c) 2020, The Linux Foundation. All rights reserved.
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*/
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#include <linux/of.h>
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#include <linux/of_platform.h>
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/platform_device.h>
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#include <linux/pm.h>
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#include <linux/regmap.h>
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#include <linux/slab.h>
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/**
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* @regmap: regmap used to access PMIC registers
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*/
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struct pm2250_spmi {
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struct regmap *regmap;
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};
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static const struct of_device_id pm2250_id_table[] = {
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{ .compatible = "qcom,pm2250-spmi" },
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{ },
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};
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MODULE_DEVICE_TABLE(of, pm2250_id_table);
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/**
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* pm2250_spmi_write: Function to write to PMIC register
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* @device: node for rouleur device
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* @reg: PMIC register to write value
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* @value: Value to be written to PMIC register
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*/
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int pm2250_spmi_write(struct device *dev, int reg, int value)
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{
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int rc;
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struct pm2250_spmi *spmi_dd;
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if (!of_device_is_compatible(dev->of_node, "qcom,pm2250-spmi")) {
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pr_err("%s: Device node is invalid\n", __func__);
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return -EINVAL;
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}
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spmi_dd = dev_get_drvdata(dev);
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if (!spmi_dd)
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return -EINVAL;
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rc = regmap_write(spmi_dd->regmap, reg, value);
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if (rc)
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dev_err(dev, "%s: Write to PMIC register failed\n", __func__);
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return rc;
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}
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EXPORT_SYMBOL(pm2250_spmi_write);
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/**
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* pm2250_spmi_read: Function to read PMIC register
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* @device: node for rouleur device
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* @reg: PMIC register to read value
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* @value: Pointer to value of reg to be read
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*/
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int pm2250_spmi_read(struct device *dev, int reg, int *value)
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{
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int rc;
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struct pm2250_spmi *spmi_dd;
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if (!of_device_is_compatible(dev->of_node, "qcom,pm2250-spmi")) {
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pr_err("%s: Device node is invalid\n", __func__);
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return -EINVAL;
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}
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spmi_dd = dev_get_drvdata(dev);
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if (!spmi_dd)
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return -EINVAL;
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rc = regmap_read(spmi_dd->regmap, reg, value);
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if (rc)
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dev_err(dev, "%s: Read from PMIC register failed\n", __func__);
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return rc;
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}
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EXPORT_SYMBOL(pm2250_spmi_read);
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static int pm2250_spmi_probe(struct platform_device *pdev)
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{
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struct pm2250_spmi *spmi_dd;
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const struct of_device_id *match;
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match = of_match_node(pm2250_id_table, pdev->dev.of_node);
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if (!match)
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return -ENXIO;
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spmi_dd = devm_kzalloc(&pdev->dev, sizeof(*spmi_dd), GFP_KERNEL);
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if (spmi_dd == NULL)
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return -ENOMEM;
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spmi_dd->regmap = dev_get_regmap(pdev->dev.parent, NULL);
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if (!spmi_dd->regmap) {
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dev_err(&pdev->dev, "Parent regmap unavailable.\n");
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return -ENXIO;
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}
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platform_set_drvdata(pdev, spmi_dd);
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dev_dbg(&pdev->dev, "Probe success !!\n");
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return 0;
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}
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static int pm2250_spmi_remove(struct platform_device *pdev)
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{
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of_platform_depopulate(&pdev->dev);
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return 0;
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}
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static struct platform_driver pm2250_spmi_driver = {
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.probe = pm2250_spmi_probe,
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.remove = pm2250_spmi_remove,
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.driver = {
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.name = "pm2250-spmi",
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.of_match_table = pm2250_id_table,
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},
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};
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module_platform_driver(pm2250_spmi_driver);
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MODULE_ALIAS("platform:pm2250-spmi");
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MODULE_DESCRIPTION("PMIC SPMI driver");
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MODULE_LICENSE("GPL v2");
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