drivers/mfd/qcom-spmi-pmic.c

   1 /*
   2  * Copyright (c) 2014, The Linux Foundation. All rights reserved.
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License version 2 and
   6  * only version 2 as published by the Free Software Foundation.
   7  *
   8  * This program is distributed in the hope that it will be useful,
   9  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11  * GNU General Public License for more details.
  12  */
  13
  14 #include <linux/kernel.h>
  15 #include <linux/module.h>
  16 #include <linux/spmi.h>
  17 #include <linux/regmap.h>
  18 #include <linux/of_platform.h>
  19
  20 static const struct regmap_config spmi_regmap_config = {
  21         .reg_bits       = 16,
  22         .val_bits       = 8,
  23         .max_register   = 0xffff,
  24         .fast_io        = true,
  25 };
  26
  27 static int pmic_spmi_probe(struct spmi_device *sdev)
  28 {
  29         struct device_node *root = sdev->dev.of_node;
  30         struct regmap *regmap;
  31
  32         regmap = devm_regmap_init_spmi_ext(sdev, &spmi_regmap_config);
  33         if (IS_ERR(regmap))
  34                 return PTR_ERR(regmap);
  35
  36         return of_platform_populate(root, NULL, NULL, &sdev->dev);
  37 }
  38
  39 static void pmic_spmi_remove(struct spmi_device *sdev)
  40 {
  41         of_platform_depopulate(&sdev->dev);
  42 }
  43
  44 static const struct of_device_id pmic_spmi_id_table[] = {
  45         { .compatible = "qcom,spmi-pmic" },
  46         { .compatible = "qcom,pm8941" },
  47         { .compatible = "qcom,pm8841" },
  48         { .compatible = "qcom,pma8084" },
  49         { }
  50 };
  51 MODULE_DEVICE_TABLE(of, pmic_spmi_id_table);
  52
  53 static struct spmi_driver pmic_spmi_driver = {
  54         .probe = pmic_spmi_probe,
  55         .remove = pmic_spmi_remove,
  56         .driver = {
  57                 .name = "pmic-spmi",
  58                 .of_match_table = pmic_spmi_id_table,
  59         },
  60 };
  61 module_spmi_driver(pmic_spmi_driver);
  62
  63 MODULE_DESCRIPTION("Qualcomm SPMI PMIC driver");
  64 MODULE_ALIAS("spmi:spmi-pmic");
  65 MODULE_LICENSE("GPL v2");
  66 MODULE_AUTHOR("Josh Cartwright <joshc@codeaurora.org>");
  67 MODULE_AUTHOR("Stanimir Varbanov <svarbanov@mm-sol.com>");