1 // SPDX-License-Identifier: GPL-2.0
3  * Power-source driver for Bay Trail Crystal Cove PMIC
5  * Copyright (c) 2023 Hans de Goede <hdegoede@redhat.com>
63 static void crc_pwrsrc_log(struct seq_file *seq, const char *prefix,  in crc_pwrsrc_log()  argument
70 			seq_printf(seq, "%s by %s\n", prefix, info[i]);  in crc_pwrsrc_log()
74 static int pwrsrc_show(struct seq_file *seq, void *unused)  in pwrsrc_show()  argument
76 	struct crc_pwrsrc_data *data = seq->private;  in pwrsrc_show()
80 	ret = regmap_read(data->regmap, CRYSTALCOVE_SPWRSRC_REG, &reg_val);  in pwrsrc_show()
84 	crc_pwrsrc_log(seq, "System powered", pwrsrc_pwrsrc_info, reg_val);  in pwrsrc_show()
88 static int resetsrc_show(struct seq_file *seq, void *unused)  in resetsrc_show()  argument
90 	struct crc_pwrsrc_data *data = seq->private;  in resetsrc_show()
92 	crc_pwrsrc_log(seq, "Last shutdown caused", pwrsrc_resetsrc0_info, data->resetsrc0);  in resetsrc_show()
93 	crc_pwrsrc_log(seq, "Last shutdown caused", pwrsrc_resetsrc1_info, data->resetsrc1);  in resetsrc_show()
97 static int wakesrc_show(struct seq_file *seq, void *unused)  in wakesrc_show()  argument
99 	struct crc_pwrsrc_data *data = seq->private;  in wakesrc_show()
101 	crc_pwrsrc_log(seq, "Last wake caused", pwrsrc_wakesrc_info, data->wakesrc);  in wakesrc_show()
114 	ret = regmap_read(data->regmap, reg, val);  in crc_pwrsrc_read_and_clear()
118 	return regmap_write(data->regmap, reg, *val);  in crc_pwrsrc_read_and_clear()
123 	struct intel_soc_pmic *pmic = dev_get_drvdata(pdev->dev.parent);  in crc_pwrsrc_probe()
127 	data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL);  in crc_pwrsrc_probe()
129 		return -ENOMEM;  in crc_pwrsrc_probe()
131 	data->regmap = pmic->regmap;  in crc_pwrsrc_probe()
140 	ret = crc_pwrsrc_read_and_clear(data, CRYSTALCOVE_RESETSRC0_REG, &data->resetsrc0);  in crc_pwrsrc_probe()
144 	ret = crc_pwrsrc_read_and_clear(data, CRYSTALCOVE_RESETSRC1_REG, &data->resetsrc1);  in crc_pwrsrc_probe()
148 	ret = crc_pwrsrc_read_and_clear(data, CRYSTALCOVE_WAKESRC_REG, &data->wakesrc);  in crc_pwrsrc_probe()
152 	data->debug_dentry = debugfs_create_dir(KBUILD_MODNAME, NULL);  in crc_pwrsrc_probe()
153 	debugfs_create_file("pwrsrc", 0444, data->debug_dentry, data, &pwrsrc_fops);  in crc_pwrsrc_probe()
154 	debugfs_create_file("resetsrc", 0444, data->debug_dentry, data, &resetsrc_fops);  in crc_pwrsrc_probe()
155 	debugfs_create_file("wakesrc", 0444, data->debug_dentry, data, &wakesrc_fops);  in crc_pwrsrc_probe()
165 	debugfs_remove_recursive(data->debug_dentry);  in crc_pwrsrc_remove()
178 MODULE_AUTHOR("Hans de Goede <hdegoede@redhat.com>");
179 MODULE_DESCRIPTION("Power-source driver for Bay Trail Crystal Cove PMIC");