1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * RSB driver for the X-Powers' Power Management ICs 4 * 5 * AXP20x typically comprises an adaptive USB-Compatible PWM charger, BUCK DC-DC 6 * converters, LDOs, multiple 12-bit ADCs of voltage, current and temperature 7 * as well as configurable GPIOs. 8 * 9 * This driver supports the RSB variants. 10 * 11 * Copyright (C) 2015 Chen-Yu Tsai 12 * 13 * Author: Chen-Yu Tsai <wens@csie.org> 14 */ 15 16 #include <linux/acpi.h> 17 #include <linux/err.h> 18 #include <linux/mfd/axp20x.h> 19 #include <linux/module.h> 20 #include <linux/of.h> 21 #include <linux/regmap.h> 22 #include <linux/slab.h> 23 #include <linux/sunxi-rsb.h> 24 25 static int axp20x_rsb_probe(struct sunxi_rsb_device *rdev) 26 { 27 struct axp20x_dev *axp20x; 28 int ret; 29 30 axp20x = devm_kzalloc(&rdev->dev, sizeof(*axp20x), GFP_KERNEL); 31 if (!axp20x) 32 return -ENOMEM; 33 34 axp20x->dev = &rdev->dev; 35 axp20x->irq = rdev->irq; 36 dev_set_drvdata(&rdev->dev, axp20x); 37 38 ret = axp20x_match_device(axp20x); 39 if (ret) 40 return ret; 41 42 axp20x->regmap = devm_regmap_init_sunxi_rsb(rdev, axp20x->regmap_cfg); 43 if (IS_ERR(axp20x->regmap)) { 44 ret = PTR_ERR(axp20x->regmap); 45 dev_err(&rdev->dev, "regmap init failed: %d\n", ret); 46 return ret; 47 } 48 49 return axp20x_device_probe(axp20x); 50 } 51 52 static int axp20x_rsb_remove(struct sunxi_rsb_device *rdev) 53 { 54 struct axp20x_dev *axp20x = sunxi_rsb_device_get_drvdata(rdev); 55 56 return axp20x_device_remove(axp20x); 57 } 58 59 static const struct of_device_id axp20x_rsb_of_match[] = { 60 { .compatible = "x-powers,axp223", .data = (void *)AXP223_ID }, 61 { .compatible = "x-powers,axp803", .data = (void *)AXP803_ID }, 62 { .compatible = "x-powers,axp806", .data = (void *)AXP806_ID }, 63 { .compatible = "x-powers,axp809", .data = (void *)AXP809_ID }, 64 { .compatible = "x-powers,axp813", .data = (void *)AXP813_ID }, 65 { }, 66 }; 67 MODULE_DEVICE_TABLE(of, axp20x_rsb_of_match); 68 69 static struct sunxi_rsb_driver axp20x_rsb_driver = { 70 .driver = { 71 .name = "axp20x-rsb", 72 .of_match_table = of_match_ptr(axp20x_rsb_of_match), 73 }, 74 .probe = axp20x_rsb_probe, 75 .remove = axp20x_rsb_remove, 76 }; 77 module_sunxi_rsb_driver(axp20x_rsb_driver); 78 79 MODULE_DESCRIPTION("PMIC MFD sunXi RSB driver for AXP20X"); 80 MODULE_AUTHOR("Chen-Yu Tsai <wens@csie.org>"); 81 MODULE_LICENSE("GPL v2"); 82