Merge tag 'qcom-dts-for-5.9' of git://git.kernel.org/pub/scm/linux/kernel/git/qcom...
[linux-2.6-microblaze.git] / arch / arm / mach-omap2 / smartreflex-class3.c
1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3  * Smart reflex Class 3 specific implementations
4  *
5  * Author: Thara Gopinath       <thara@ti.com>
6  *
7  * Copyright (C) 2010 Texas Instruments, Inc.
8  * Thara Gopinath <thara@ti.com>
9  */
10
11 #include <linux/power/smartreflex.h>
12 #include "soc.h"
13 #include "voltage.h"
14
15 static int sr_class3_enable(struct omap_sr *sr)
16 {
17         unsigned long volt = voltdm_get_voltage(sr->voltdm);
18
19         if (!volt) {
20                 pr_warn("%s: Curr voltage unknown. Cannot enable %s\n",
21                         __func__, sr->name);
22                 return -ENODATA;
23         }
24
25         omap_vp_enable(sr->voltdm);
26         return sr_enable(sr, volt);
27 }
28
29 static int sr_class3_disable(struct omap_sr *sr, int is_volt_reset)
30 {
31         sr_disable_errgen(sr);
32         omap_vp_disable(sr->voltdm);
33         sr_disable(sr);
34         if (is_volt_reset)
35                 voltdm_reset(sr->voltdm);
36
37         return 0;
38 }
39
40 static int sr_class3_configure(struct omap_sr *sr)
41 {
42         return sr_configure_errgen(sr);
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 omap_late_initcall(sr_class3_init);