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 19 static 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 }; 30 MODULE_DEVICE_TABLE(i2c, mc13xxx_i2c_device_id); 31 32 static 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 }; 43 MODULE_DEVICE_TABLE(of, mc13xxx_dt_ids); 44 45 static 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 54 static 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 80 static void mc13xxx_i2c_remove(struct i2c_client *client) 81 { 82 mc13xxx_common_exit(&client->dev); 83 } 84 85 static 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 95 static int __init mc13xxx_i2c_init(void) 96 { 97 return i2c_add_driver(&mc13xxx_i2c_driver); 98 } 99 subsys_initcall(mc13xxx_i2c_init); 100 101 static void __exit mc13xxx_i2c_exit(void) 102 { 103 i2c_del_driver(&mc13xxx_i2c_driver); 104 } 105 module_exit(mc13xxx_i2c_exit); 106 107 MODULE_DESCRIPTION("i2c driver for Freescale MC13XXX PMIC"); 108 MODULE_AUTHOR("Marc Reilly <marc@cpdesign.com.au"); 109 MODULE_LICENSE("GPL v2"); 110