mirror of https://github.com/OpenIPC/firmware.git
131 lines
3.5 KiB
Diff
131 lines
3.5 KiB
Diff
diff -drupN a/drivers/mfd/axp2101-i2c.c b/drivers/mfd/axp2101-i2c.c
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--- a/drivers/mfd/axp2101-i2c.c 1970-01-01 03:00:00.000000000 +0300
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+++ b/drivers/mfd/axp2101-i2c.c 2022-06-12 05:28:14.000000000 +0300
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@@ -0,0 +1,126 @@
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+/*
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+ * I2C driver for the X-Powers' Power Management ICs
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+ *
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+ * AXP20x typically comprises an adaptive USB-Compatible PWM charger, BUCK DC-DC
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+ * converters, LDOs, multiple 12-bit ADCs of voltage, current and temperature
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+ * as well as configurable GPIOs.
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+ *
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+ * This driver supports the I2C variants.
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+ *
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+ * Copyright (C) 2014 Carlo Caione
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+ *
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+ * Author: Carlo Caione <carlo@caione.org>
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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 as
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+ * published by the Free Software Foundation.
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+ */
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+
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+#include <linux/acpi.h>
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+#include <linux/err.h>
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+#include <linux/i2c.h>
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+#include <linux/module.h>
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+#include <linux/mfd/axp2101.h>
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+#include <linux/of.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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+static int axp20x_i2c_probe(struct i2c_client *i2c,
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+ const struct i2c_device_id *id)
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+{
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+ struct axp20x_dev *axp20x;
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+ int ret;
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+
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+ axp20x = devm_kzalloc(&i2c->dev, sizeof(*axp20x), GFP_KERNEL);
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+ if (!axp20x)
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+ return -ENOMEM;
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+
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+ axp20x->dev = &i2c->dev;
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+ axp20x->irq = i2c->irq;
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+ dev_set_drvdata(axp20x->dev, axp20x);
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+
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+ ret = axp20x_match_device(axp20x);
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+ if (ret)
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+ return ret;
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+
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+ axp20x->regmap = devm_regmap_init_i2c(i2c, axp20x->regmap_cfg);
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+ if (IS_ERR(axp20x->regmap)) {
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+ ret = PTR_ERR(axp20x->regmap);
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+ dev_err(&i2c->dev, "regmap init failed: %d\n", ret);
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+ return ret;
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+ }
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+
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+ return axp20x_device_probe(axp20x);
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+}
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+
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+static int axp20x_i2c_remove(struct i2c_client *i2c)
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+{
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+ struct axp20x_dev *axp20x = i2c_get_clientdata(i2c);
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+
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+ return axp20x_device_remove(axp20x);
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+}
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+
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+static const struct of_device_id axp20x_i2c_of_match[] = {
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+ { .compatible = "x-powers,axp152", .data = (void *)AXP152_ID },
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+ { .compatible = "x-powers,axp202", .data = (void *)AXP202_ID },
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+ { .compatible = "x-powers,axp209", .data = (void *)AXP209_ID },
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+ { .compatible = "x-powers,axp221", .data = (void *)AXP221_ID },
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+ { .compatible = "x-powers,axp2101", .data = (void *)AXP2101_ID },
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+ { .compatible = "x-powers,axp15", .data = (void *)AXP15_ID },
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+ { .compatible = "x-powers,axp1530", .data = (void *)AXP1530_ID },
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+ { },
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+};
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+MODULE_DEVICE_TABLE(of, axp20x_i2c_of_match);
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+
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+/*
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+ * This is useless for OF-enabled devices, but it is needed by I2C subsystem
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+ */
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+static const struct i2c_device_id axp20x_i2c_id[] = {
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+ { },
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+};
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+MODULE_DEVICE_TABLE(i2c, axp20x_i2c_id);
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+
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+static const struct acpi_device_id axp20x_i2c_acpi_match[] = {
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+ {
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+ .id = "INT33F4",
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+ .driver_data = AXP288_ID,
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+ },
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+ { },
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+};
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+MODULE_DEVICE_TABLE(acpi, axp20x_i2c_acpi_match);
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+
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+static struct i2c_driver axp2101_i2c_driver = {
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+ .driver = {
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+ .name = "axp20x-i2c",
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+ .of_match_table = of_match_ptr(axp20x_i2c_of_match),
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+ .acpi_match_table = ACPI_PTR(axp20x_i2c_acpi_match),
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+ },
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+ .probe = axp20x_i2c_probe,
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+ .remove = axp20x_i2c_remove,
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+ .id_table = axp20x_i2c_id,
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+};
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+
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+static int __init axp2101_i2c_init(void)
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+{
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+ int ret;
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+
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+ ret = i2c_add_driver(&axp2101_i2c_driver);
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+ if (ret != 0) {
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+ pr_err("axp2101 i2c registration failed %d\n", ret);
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+ return ret;
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+ }
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+
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+ return 0;
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+}
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+subsys_initcall(axp2101_i2c_init);
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+
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+static void __exit axp2101_i2c_exit(void)
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+{
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+ i2c_del_driver(&axp2101_i2c_driver);
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+}
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+
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+module_exit(axp2101_i2c_exit);
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+
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+MODULE_DESCRIPTION("PMIC MFD I2C driver for AXP20X");
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+MODULE_AUTHOR("Carlo Caione <carlo@caione.org>");
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+MODULE_LICENSE("GPL");
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