Merge branch 'next/deletion' of git://git.linaro.org/people/arnd/arm-soc
[pandora-kernel.git] / arch / arm / mach-omap2 / smartreflex-class3.c
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 "smartreflex.h"
15
16 static int sr_class3_enable(struct voltagedomain *voltdm)
17 {
18         unsigned long volt = voltdm_get_voltage(voltdm);
19
20         if (!volt) {
21                 pr_warning("%s: Curr voltage unknown. Cannot enable sr_%s\n",
22                                 __func__, voltdm->name);
23                 return -ENODATA;
24         }
25
26         omap_vp_enable(voltdm);
27         return sr_enable(voltdm, volt);
28 }
29
30 static int sr_class3_disable(struct voltagedomain *voltdm, int is_volt_reset)
31 {
32         omap_vp_disable(voltdm);
33         sr_disable(voltdm);
34         if (is_volt_reset)
35                 voltdm_reset(voltdm);
36
37         return 0;
38 }
39
40 static int sr_class3_configure(struct voltagedomain *voltdm)
41 {
42         return sr_configure_errgen(voltdm);
43 }
44
45 /* SR class3 structure */
46 static struct omap_sr_class_data class3_data = {
47         .enable = sr_class3_enable,
48         .disable = sr_class3_disable,
49         .configure = sr_class3_configure,
50         .class_type = SR_CLASS3,
51 };
52
53 /* Smartreflex Class3 init API to be called from board file */
54 static int __init sr_class3_init(void)
55 {
56         pr_info("SmartReflex Class3 initialized\n");
57         return sr_register_class(&class3_data);
58 }
59 late_initcall(sr_class3_init);