threeeye
bc1d038eac
Squashed backup commit (no shallow-clone history issues) of xiaomi-mt6833-dev/kernel_xiaomi_mt6833 (lineage-23.2 branch, upstream commit 9eece662e) plus all fixes applied to get everpal_defconfig building clean against a modern (GCC 15.2.0) toolchain -- see the previous commit message on the lineage-23.2 branch (also in this repo history is not available here since this is a squashed snapshot; full incremental history lives in the local DL380 checkout and the upstream GitHub remote). Upstream: https://github.com/xiaomi-mt6833-dev/kernel_xiaomi_mt6833 (lineage-23.2)
95 lines
1.9 KiB
C
95 lines
1.9 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Copyright (c) 2019 - 2021 MediaTek Inc.
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*/
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#include <linux/device.h>
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#include <linux/fs.h>
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#include <linux/ioctl.h>
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#include <linux/kernel.h>
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#include <linux/miscdevice.h>
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#include <linux/module.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/consumer.h>
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#define DEVICE_NAME "mt3337_gpsonly"
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#ifdef pr_fmt
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#undef pr_fmt
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#endif
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#define pr_fmt(fmt) "["KBUILD_MODNAME"]" fmt
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#define GPS_POWER_IOCTL _IOW('G', 0, int)
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static long gps_ioctrl(struct file *filp, unsigned int cmd, unsigned long arg)
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{
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struct miscdevice *dev;
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struct regulator *reg;
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int ret;
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switch (cmd) {
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case GPS_POWER_IOCTL:
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dev = (struct miscdevice *)filp->private_data;
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reg = dev_get_drvdata(dev->this_device);
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if (arg)
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ret = regulator_enable(reg);
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else
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ret = regulator_disable(reg);
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return ret;
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default:
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return -EINVAL;
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}
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return 0;
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}
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static const struct file_operations gps_fops = {
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.owner = THIS_MODULE,
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.unlocked_ioctl = gps_ioctrl,
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.compat_ioctl = gps_ioctrl,
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};
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static struct miscdevice mt3337_gps_driver = {
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.minor = MISC_DYNAMIC_MINOR,
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.name = DEVICE_NAME,
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.fops = &gps_fops,
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};
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static int mt3337_gps_probe(struct platform_device *pdev)
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{
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int ret;
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struct regulator *regulator;
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regulator = devm_regulator_get(&pdev->dev, "power");
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if (IS_ERR(regulator))
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return PTR_ERR(regulator);
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ret = misc_register(&mt3337_gps_driver);
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if (ret < 0)
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return ret;
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dev_set_drvdata(mt3337_gps_driver.this_device, regulator);
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return 0;
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}
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static const struct of_device_id mt3337_gps_of_match[] = {
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{ .compatible = "mediatek,mt3337" },
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{},
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};
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static struct platform_driver mt3337_gps_pdriver = {
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.probe = mt3337_gps_probe,
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.driver = {
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.name = DEVICE_NAME,
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.of_match_table = of_match_ptr(mt3337_gps_of_match),
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},
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};
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module_platform_driver(mt3337_gps_pdriver);
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MODULE_AUTHOR("Hao Dong <hao.dong@mediatek.com>");
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MODULE_DESCRIPTION("MT3337 GPS Driver");
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MODULE_LICENSE("GPL");
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