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159 lines
3.8 KiB
159 lines
3.8 KiB
/*
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* Copyright (c) 2015, The Linux Foundation. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 and
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* only version 2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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*/
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#include <linux/init.h>
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#include <linux/module.h>
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#include <linux/sec_class.h>
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#include <linux/device.h>
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#include <linux/proc_fs.h>
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#include <linux/input/qpnp-power-on.h>
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#include <linux/sec_debug.h>
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#include <linux/seq_file.h>
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static struct device *sec_ap_pmic_dev;
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static int pwrsrc_show(struct seq_file *m, void *v)
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{
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char buf[SZ_1K];
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sec_get_pwrsrc(buf);
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seq_printf(m, "%s", buf);
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return 0;
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}
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static int pwrsrc_open(struct inode *inode, struct file *file)
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{
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return single_open(file, pwrsrc_show, NULL);
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}
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static const struct file_operations proc_pwrsrc_operation = {
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.open = pwrsrc_open,
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.read = seq_read,
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.llseek = seq_lseek,
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.release = seq_release,
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};
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#ifdef CONFIG_MUIC_NOTIFIER
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static ssize_t chg_det_show(struct device *in_dev,
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struct device_attribute *attr, char *buf)
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{
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int ret = 0;
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ret = qpnp_pon_check_chg_det();
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pr_info("%s: ret = %d\n", __func__, ret);
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return sprintf(buf, "%d\n", ret);
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}
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static DEVICE_ATTR_RO(chg_det);
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#endif
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static ssize_t off_reason_show(struct device *in_dev,
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struct device_attribute *attr, char *buf)
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{
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return sprintf(buf, "%s", qpnp_pon_get_off_reason());
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}
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static DEVICE_ATTR_RO(off_reason);
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ssize_t print_gpio_exp(char *buf)
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{
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#ifdef CONFIG_GPIO_PCAL6524
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extern ssize_t get_gpio_exp(char *buf);
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return get_gpio_exp(buf);
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#else
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return 0;
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#endif
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}
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EXPORT_SYMBOL(print_gpio_exp);
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static ssize_t gpio_exp_show(struct device *in_dev,
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struct device_attribute *attr, char *buf)
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{
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return print_gpio_exp(buf);
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}
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static DEVICE_ATTR_RO(gpio_exp);
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static ssize_t debug_show(struct device *in_dev,
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struct device_attribute *attr, char *buf)
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{
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ssize_t size = 0;
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#ifdef CONFIG_MUIC_NOTIFIER
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size += chg_det_show(in_dev, attr, buf+size);
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#endif
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size += off_reason_show(in_dev, attr, buf+size);
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size += gpio_exp_show(in_dev, attr, buf+size);
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return size;
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}
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static DEVICE_ATTR_RO(debug);
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static int __init sec_ap_pmic_init(void)
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{
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int err;
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struct proc_dir_entry *entry;
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sec_ap_pmic_dev = sec_device_create(0, NULL, "ap_pmic");
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if (unlikely(IS_ERR(sec_ap_pmic_dev))) {
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pr_err("%s: Failed to create ap_pmic device\n", __func__);
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err = PTR_ERR(sec_ap_pmic_dev);
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goto err_device_create;
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}
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#ifdef CONFIG_MUIC_NOTIFIER
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err = device_create_file(sec_ap_pmic_dev, &dev_attr_chg_det);
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if (unlikely(err)) {
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pr_err("%s: Failed to create chg_det\n", __func__);
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goto err_device_create;
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}
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#endif
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err = device_create_file(sec_ap_pmic_dev, &dev_attr_off_reason);
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if (unlikely(err)) {
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pr_err("%s: Failed to create off_reason\n", __func__);
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goto err_device_create;
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}
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err = device_create_file(sec_ap_pmic_dev, &dev_attr_gpio_exp);
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if (unlikely(err)) {
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pr_err("%s: Failed to create gpio_exp\n", __func__);
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goto err_device_create;
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}
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err = device_create_file(sec_ap_pmic_dev, &dev_attr_debug);
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if (unlikely(err)) {
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pr_err("%s: Failed to create debug\n", __func__);
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goto err_device_create;
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}
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/* pmic pon logging for eRR.p */
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entry = proc_create("pwrsrc", 0444, NULL, &proc_pwrsrc_operation);
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if (unlikely(!entry)) {
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err = -ENOMEM;
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goto err_device_create;
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}
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pr_info("%s: ap_pmic successfully inited.\n", __func__);
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return 0;
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err_device_create:
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return err;
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}
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module_init(sec_ap_pmic_init);
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MODULE_DESCRIPTION("sec_ap_pmic driver");
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MODULE_AUTHOR("Jiman Cho <jiman85.cho@samsung.com");
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MODULE_LICENSE("GPL");
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