drivers/spmi/spmi-devres.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * Copyright 2023 Google LLC.
   4  */
   5
   6 #include <linux/device.h>
   7 #include <linux/spmi.h>
   8
   9 static void devm_spmi_controller_release(struct device *parent, void *res)
  10 {
  11         spmi_controller_put(*(struct spmi_controller **)res);
  12 }
  13
  14 struct spmi_controller *devm_spmi_controller_alloc(struct device *parent, size_t size)
  15 {
  16         struct spmi_controller **ptr, *ctrl;
  17
  18         ptr = devres_alloc(devm_spmi_controller_release, sizeof(*ptr), GFP_KERNEL);
  19         if (!ptr)
  20                 return ERR_PTR(-ENOMEM);
  21
  22         ctrl = spmi_controller_alloc(parent, size);
  23         if (IS_ERR(ctrl)) {
  24                 devres_free(ptr);
  25                 return ctrl;
  26         }
  27
  28         *ptr = ctrl;
  29         devres_add(parent, ptr);
  30
  31         return ctrl;
  32 }
  33 EXPORT_SYMBOL_GPL(devm_spmi_controller_alloc);
  34
  35 static void devm_spmi_controller_remove(struct device *parent, void *res)
  36 {
  37         spmi_controller_remove(*(struct spmi_controller **)res);
  38 }
  39
  40 int devm_spmi_controller_add(struct device *parent, struct spmi_controller *ctrl)
  41 {
  42         struct spmi_controller **ptr;
  43         int ret;
  44
  45         ptr = devres_alloc(devm_spmi_controller_remove, sizeof(*ptr), GFP_KERNEL);
  46         if (!ptr)
  47                 return -ENOMEM;
  48
  49         ret = spmi_controller_add(ctrl);
  50         if (ret) {
  51                 devres_free(ptr);
  52                 return ret;
  53         }
  54
  55         *ptr = ctrl;
  56         devres_add(parent, ptr);
  57
  58         return 0;
  59
  60 }
  61 EXPORT_SYMBOL_GPL(devm_spmi_controller_add);
  62
  63 MODULE_LICENSE("GPL");
  64 MODULE_DESCRIPTION("SPMI devres helpers");