1 /*
2  * Smart reflex Class 3 specific implementations
3  *
4  * Author: Thara Gopinath       <thara@ti.com>
5  *
6  * Copyright (C) 2010 Texas Instruments, Inc.
7  * Thara Gopinath <thara@ti.com>
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 
14 #include <linux/power/smartreflex.h>
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 
27 	omap_vp_enable(sr->voltdm);
28 	return sr_enable(sr->voltdm, volt);
29 }
30 
31 static int sr_class3_disable(struct omap_sr *sr, int is_volt_reset)
32 {
33 	sr_disable_errgen(sr->voltdm);
34 	omap_vp_disable(sr->voltdm);
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);
62