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045a44d4c9
The DT of_device.h and of_platform.h date back to the separate of_platform_bus_type before it as merged into the regular platform bus. As part of that merge prepping Arm DT support 13 years ago, they "temporarily" include each other. They also include platform_device.h and of.h. As a result, there's a pretty much random mix of those include files used throughout the tree. In order to detangle these headers and replace the implicit includes with struct declarations, users need to explicitly include the correct includes. Signed-off-by: Rob Herring <robh@kernel.org> Link: https://lore.kernel.org/r/20230714174930.4063320-1-robh@kernel.org Signed-off-by: Mark Brown <broonie@kernel.org>
111 lines
3 KiB
C
111 lines
3 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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//
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// Qualcomm PMIC VBUS output regulator driver
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//
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// Copyright (c) 2020, The Linux Foundation. All rights reserved.
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#include <linux/module.h>
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#include <linux/err.h>
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#include <linux/kernel.h>
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#include <linux/of.h>
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#include <linux/platform_device.h>
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#include <linux/regulator/driver.h>
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#include <linux/regulator/of_regulator.h>
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#include <linux/regmap.h>
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#define CMD_OTG 0x40
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#define OTG_EN BIT(0)
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#define OTG_CURRENT_LIMIT_CFG 0x52
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#define OTG_CURRENT_LIMIT_MASK GENMASK(2, 0)
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#define OTG_CFG 0x53
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#define OTG_EN_SRC_CFG BIT(1)
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static const unsigned int curr_table[] = {
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500000, 1000000, 1500000, 2000000, 2500000, 3000000,
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};
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static const struct regulator_ops qcom_usb_vbus_reg_ops = {
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.enable = regulator_enable_regmap,
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.disable = regulator_disable_regmap,
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.is_enabled = regulator_is_enabled_regmap,
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.get_current_limit = regulator_get_current_limit_regmap,
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.set_current_limit = regulator_set_current_limit_regmap,
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};
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static struct regulator_desc qcom_usb_vbus_rdesc = {
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.name = "usb_vbus",
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.ops = &qcom_usb_vbus_reg_ops,
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.owner = THIS_MODULE,
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.type = REGULATOR_VOLTAGE,
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.curr_table = curr_table,
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.n_current_limits = ARRAY_SIZE(curr_table),
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};
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static int qcom_usb_vbus_regulator_probe(struct platform_device *pdev)
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{
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struct device *dev = &pdev->dev;
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struct regulator_dev *rdev;
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struct regmap *regmap;
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struct regulator_config config = { };
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struct regulator_init_data *init_data;
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int ret;
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u32 base;
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ret = of_property_read_u32(dev->of_node, "reg", &base);
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if (ret < 0) {
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dev_err(dev, "no base address found\n");
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return ret;
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}
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regmap = dev_get_regmap(dev->parent, NULL);
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if (!regmap) {
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dev_err(dev, "Failed to get regmap\n");
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return -ENOENT;
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}
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init_data = of_get_regulator_init_data(dev, dev->of_node,
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&qcom_usb_vbus_rdesc);
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if (!init_data)
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return -ENOMEM;
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qcom_usb_vbus_rdesc.enable_reg = base + CMD_OTG;
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qcom_usb_vbus_rdesc.enable_mask = OTG_EN;
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qcom_usb_vbus_rdesc.csel_reg = base + OTG_CURRENT_LIMIT_CFG;
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qcom_usb_vbus_rdesc.csel_mask = OTG_CURRENT_LIMIT_MASK;
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config.dev = dev;
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config.init_data = init_data;
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config.of_node = dev->of_node;
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config.regmap = regmap;
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rdev = devm_regulator_register(dev, &qcom_usb_vbus_rdesc, &config);
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if (IS_ERR(rdev)) {
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ret = PTR_ERR(rdev);
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dev_err(dev, "not able to register vbus reg %d\n", ret);
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return ret;
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}
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/* Disable HW logic for VBUS enable */
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regmap_update_bits(regmap, base + OTG_CFG, OTG_EN_SRC_CFG, 0);
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return 0;
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}
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static const struct of_device_id qcom_usb_vbus_regulator_match[] = {
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{ .compatible = "qcom,pm8150b-vbus-reg" },
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{ }
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};
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MODULE_DEVICE_TABLE(of, qcom_usb_vbus_regulator_match);
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static struct platform_driver qcom_usb_vbus_regulator_driver = {
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.driver = {
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.name = "qcom-usb-vbus-regulator",
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.probe_type = PROBE_PREFER_ASYNCHRONOUS,
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.of_match_table = qcom_usb_vbus_regulator_match,
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},
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.probe = qcom_usb_vbus_regulator_probe,
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};
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module_platform_driver(qcom_usb_vbus_regulator_driver);
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MODULE_DESCRIPTION("Qualcomm USB vbus regulator driver");
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MODULE_LICENSE("GPL v2");
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