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);
60