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smartreflex-class3.c
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1 /*
2  * Smart reflex Class 3 specific implementations
3  *
4  * Author: Thara Gopinath <[email protected]>
5  *
6  * Copyright (C) 2010 Texas Instruments, Inc.
7  * Thara Gopinath <[email protected]>
8  *
9  * This program is free software; you can redistribute it and/or modify
10  * it under the terms of the GNU General Public License version 2 as
11  * published by the Free Software Foundation.
12  */
13 
15 #include "voltage.h"
16 
17 static int sr_class3_enable(struct omap_sr *sr)
18 {
19  unsigned long volt = voltdm_get_voltage(sr->voltdm);
20 
21  if (!volt) {
22  pr_warning("%s: Curr voltage unknown. Cannot enable %s\n",
23  __func__, sr->name);
24  return -ENODATA;
25  }
26 
28  return sr_enable(sr->voltdm, volt);
29 }
30 
31 static int sr_class3_disable(struct omap_sr *sr, int is_volt_reset)
32 {
35  sr_disable(sr->voltdm);
36  if (is_volt_reset)
37  voltdm_reset(sr->voltdm);
38 
39  return 0;
40 }
41 
42 static int sr_class3_configure(struct omap_sr *sr)
43 {
44  return sr_configure_errgen(sr->voltdm);
45 }
46 
47 /* SR class3 structure */
48 static struct omap_sr_class_data class3_data = {
49  .enable = sr_class3_enable,
50  .disable = sr_class3_disable,
51  .configure = sr_class3_configure,
52  .class_type = SR_CLASS3,
53 };
54 
55 /* Smartreflex Class3 init API to be called from board file */
56 static int __init sr_class3_init(void)
57 {
58  pr_info("SmartReflex Class3 initialized\n");
59  return sr_register_class(&class3_data);
60 }
61 late_initcall(sr_class3_init);