1// SPDX-License-Identifier: GPL-2.0-only 2/* 3 * Copyright 2009-2010 Creative Product Design 4 * Marc Reilly marc@cpdesign.com.au 5 */ 6 7#include <linux/slab.h> 8#include <linux/module.h> 9#include <linux/platform_device.h> 10#include <linux/mfd/core.h> 11#include <linux/mfd/mc13xxx.h> 12#include <linux/of.h> 13#include <linux/of_device.h> 14#include <linux/i2c.h> 15#include <linux/err.h> 16 17#include "mc13xxx.h" 18 19static const struct i2c_device_id mc13xxx_i2c_device_id[] = { 20 { 21 .name = "mc13892", 22 .driver_data = (kernel_ulong_t)&mc13xxx_variant_mc13892, 23 }, { 24 .name = "mc34708", 25 .driver_data = (kernel_ulong_t)&mc13xxx_variant_mc34708, 26 }, { 27 /* sentinel */ 28 } 29}; 30MODULE_DEVICE_TABLE(i2c, mc13xxx_i2c_device_id); 31 32static const struct of_device_id mc13xxx_dt_ids[] = { 33 { 34 .compatible = "fsl,mc13892", 35 .data = &mc13xxx_variant_mc13892, 36 }, { 37 .compatible = "fsl,mc34708", 38 .data = &mc13xxx_variant_mc34708, 39 }, { 40 /* sentinel */ 41 } 42}; 43MODULE_DEVICE_TABLE(of, mc13xxx_dt_ids); 44 45static const struct regmap_config mc13xxx_regmap_i2c_config = { 46 .reg_bits = 8, 47 .val_bits = 24, 48 49 .max_register = MC13XXX_NUMREGS, 50 51 .cache_type = REGCACHE_NONE, 52}; 53 54static int mc13xxx_i2c_probe(struct i2c_client *client) 55{ 56 struct mc13xxx *mc13xxx; 57 int ret; 58 59 mc13xxx = devm_kzalloc(&client->dev, sizeof(*mc13xxx), GFP_KERNEL); 60 if (!mc13xxx) 61 return -ENOMEM; 62 63 dev_set_drvdata(&client->dev, mc13xxx); 64 65 mc13xxx->irq = client->irq; 66 67 mc13xxx->regmap = devm_regmap_init_i2c(client, 68 &mc13xxx_regmap_i2c_config); 69 if (IS_ERR(mc13xxx->regmap)) { 70 ret = PTR_ERR(mc13xxx->regmap); 71 dev_err(&client->dev, "Failed to initialize regmap: %d\n", ret); 72 return ret; 73 } 74 75 mc13xxx->variant = i2c_get_match_data(client); 76 77 return mc13xxx_common_init(&client->dev); 78} 79 80static void mc13xxx_i2c_remove(struct i2c_client *client) 81{ 82 mc13xxx_common_exit(&client->dev); 83} 84 85static struct i2c_driver mc13xxx_i2c_driver = { 86 .id_table = mc13xxx_i2c_device_id, 87 .driver = { 88 .name = "mc13xxx", 89 .of_match_table = mc13xxx_dt_ids, 90 }, 91 .probe = mc13xxx_i2c_probe, 92 .remove = mc13xxx_i2c_remove, 93}; 94 95static int __init mc13xxx_i2c_init(void) 96{ 97 return i2c_add_driver(&mc13xxx_i2c_driver); 98} 99subsys_initcall(mc13xxx_i2c_init); 100 101static void __exit mc13xxx_i2c_exit(void) 102{ 103 i2c_del_driver(&mc13xxx_i2c_driver); 104} 105module_exit(mc13xxx_i2c_exit); 106 107MODULE_DESCRIPTION("i2c driver for Freescale MC13XXX PMIC"); 108MODULE_AUTHOR("Marc Reilly <marc@cpdesign.com.au"); 109MODULE_LICENSE("GPL v2"); 110