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
sr_class3_enable(struct omap_sr * sr)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
sr_class3_disable(struct omap_sr * sr,int is_volt_reset)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
sr_class3_configure(struct omap_sr * sr)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 */
sr_class3_init(void)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