18c2ecf20Sopenharmony_ci// SPDX-License-Identifier: GPL-2.0-only 28c2ecf20Sopenharmony_ci/* 38c2ecf20Sopenharmony_ci * RSB driver for the X-Powers' Power Management ICs 48c2ecf20Sopenharmony_ci * 58c2ecf20Sopenharmony_ci * AXP20x typically comprises an adaptive USB-Compatible PWM charger, BUCK DC-DC 68c2ecf20Sopenharmony_ci * converters, LDOs, multiple 12-bit ADCs of voltage, current and temperature 78c2ecf20Sopenharmony_ci * as well as configurable GPIOs. 88c2ecf20Sopenharmony_ci * 98c2ecf20Sopenharmony_ci * This driver supports the RSB variants. 108c2ecf20Sopenharmony_ci * 118c2ecf20Sopenharmony_ci * Copyright (C) 2015 Chen-Yu Tsai 128c2ecf20Sopenharmony_ci * 138c2ecf20Sopenharmony_ci * Author: Chen-Yu Tsai <wens@csie.org> 148c2ecf20Sopenharmony_ci */ 158c2ecf20Sopenharmony_ci 168c2ecf20Sopenharmony_ci#include <linux/acpi.h> 178c2ecf20Sopenharmony_ci#include <linux/err.h> 188c2ecf20Sopenharmony_ci#include <linux/mfd/axp20x.h> 198c2ecf20Sopenharmony_ci#include <linux/module.h> 208c2ecf20Sopenharmony_ci#include <linux/of.h> 218c2ecf20Sopenharmony_ci#include <linux/regmap.h> 228c2ecf20Sopenharmony_ci#include <linux/slab.h> 238c2ecf20Sopenharmony_ci#include <linux/sunxi-rsb.h> 248c2ecf20Sopenharmony_ci 258c2ecf20Sopenharmony_cistatic int axp20x_rsb_probe(struct sunxi_rsb_device *rdev) 268c2ecf20Sopenharmony_ci{ 278c2ecf20Sopenharmony_ci struct axp20x_dev *axp20x; 288c2ecf20Sopenharmony_ci int ret; 298c2ecf20Sopenharmony_ci 308c2ecf20Sopenharmony_ci axp20x = devm_kzalloc(&rdev->dev, sizeof(*axp20x), GFP_KERNEL); 318c2ecf20Sopenharmony_ci if (!axp20x) 328c2ecf20Sopenharmony_ci return -ENOMEM; 338c2ecf20Sopenharmony_ci 348c2ecf20Sopenharmony_ci axp20x->dev = &rdev->dev; 358c2ecf20Sopenharmony_ci axp20x->irq = rdev->irq; 368c2ecf20Sopenharmony_ci dev_set_drvdata(&rdev->dev, axp20x); 378c2ecf20Sopenharmony_ci 388c2ecf20Sopenharmony_ci ret = axp20x_match_device(axp20x); 398c2ecf20Sopenharmony_ci if (ret) 408c2ecf20Sopenharmony_ci return ret; 418c2ecf20Sopenharmony_ci 428c2ecf20Sopenharmony_ci axp20x->regmap = devm_regmap_init_sunxi_rsb(rdev, axp20x->regmap_cfg); 438c2ecf20Sopenharmony_ci if (IS_ERR(axp20x->regmap)) { 448c2ecf20Sopenharmony_ci ret = PTR_ERR(axp20x->regmap); 458c2ecf20Sopenharmony_ci dev_err(&rdev->dev, "regmap init failed: %d\n", ret); 468c2ecf20Sopenharmony_ci return ret; 478c2ecf20Sopenharmony_ci } 488c2ecf20Sopenharmony_ci 498c2ecf20Sopenharmony_ci return axp20x_device_probe(axp20x); 508c2ecf20Sopenharmony_ci} 518c2ecf20Sopenharmony_ci 528c2ecf20Sopenharmony_cistatic int axp20x_rsb_remove(struct sunxi_rsb_device *rdev) 538c2ecf20Sopenharmony_ci{ 548c2ecf20Sopenharmony_ci struct axp20x_dev *axp20x = sunxi_rsb_device_get_drvdata(rdev); 558c2ecf20Sopenharmony_ci 568c2ecf20Sopenharmony_ci return axp20x_device_remove(axp20x); 578c2ecf20Sopenharmony_ci} 588c2ecf20Sopenharmony_ci 598c2ecf20Sopenharmony_cistatic const struct of_device_id axp20x_rsb_of_match[] = { 608c2ecf20Sopenharmony_ci { .compatible = "x-powers,axp223", .data = (void *)AXP223_ID }, 618c2ecf20Sopenharmony_ci { .compatible = "x-powers,axp803", .data = (void *)AXP803_ID }, 628c2ecf20Sopenharmony_ci { .compatible = "x-powers,axp806", .data = (void *)AXP806_ID }, 638c2ecf20Sopenharmony_ci { .compatible = "x-powers,axp809", .data = (void *)AXP809_ID }, 648c2ecf20Sopenharmony_ci { .compatible = "x-powers,axp813", .data = (void *)AXP813_ID }, 658c2ecf20Sopenharmony_ci { }, 668c2ecf20Sopenharmony_ci}; 678c2ecf20Sopenharmony_ciMODULE_DEVICE_TABLE(of, axp20x_rsb_of_match); 688c2ecf20Sopenharmony_ci 698c2ecf20Sopenharmony_cistatic struct sunxi_rsb_driver axp20x_rsb_driver = { 708c2ecf20Sopenharmony_ci .driver = { 718c2ecf20Sopenharmony_ci .name = "axp20x-rsb", 728c2ecf20Sopenharmony_ci .of_match_table = of_match_ptr(axp20x_rsb_of_match), 738c2ecf20Sopenharmony_ci }, 748c2ecf20Sopenharmony_ci .probe = axp20x_rsb_probe, 758c2ecf20Sopenharmony_ci .remove = axp20x_rsb_remove, 768c2ecf20Sopenharmony_ci}; 778c2ecf20Sopenharmony_cimodule_sunxi_rsb_driver(axp20x_rsb_driver); 788c2ecf20Sopenharmony_ci 798c2ecf20Sopenharmony_ciMODULE_DESCRIPTION("PMIC MFD sunXi RSB driver for AXP20X"); 808c2ecf20Sopenharmony_ciMODULE_AUTHOR("Chen-Yu Tsai <wens@csie.org>"); 818c2ecf20Sopenharmony_ciMODULE_LICENSE("GPL v2"); 82