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 "soc.h"
16 #include "voltage.h"
17 
18 static int sr_class3_enable(struct omap_sr *sr)
19 {
20 	unsigned long volt = voltdm_get_voltage(sr->voltdm);
21 
22 	if (!volt) {
23 		pr_warning("%s: Curr voltage unknown. Cannot enable %s\n",
24 				__func__, sr->name);
25 		return -ENODATA;
26 	}
27 
28 	omap_vp_enable(sr->voltdm);
29 	return sr_enable(sr, volt);
30 }
31 
32 static int sr_class3_disable(struct omap_sr *sr, int is_volt_reset)
33 {
34 	sr_disable_errgen(sr);
35 	omap_vp_disable(sr->voltdm);
36 	sr_disable(sr);
37 	if (is_volt_reset)
38 		voltdm_reset(sr->voltdm);
39 
40 	return 0;
41 }
42 
43 static int sr_class3_configure(struct omap_sr *sr)
44 {
45 	return sr_configure_errgen(sr);
46 }
47 
48 /* SR class3 structure */
49 static struct omap_sr_class_data class3_data = {
50 	.enable = sr_class3_enable,
51 	.disable = sr_class3_disable,
52 	.configure = sr_class3_configure,
53 	.class_type = SR_CLASS3,
54 };
55 
56 /* Smartreflex Class3 init API to be called from board file */
57 static int __init sr_class3_init(void)
58 {
59 	pr_info("SmartReflex Class3 initialized\n");
60 	return sr_register_class(&class3_data);
61 }
62 omap_late_initcall(sr_class3_init);
63