1*4882a593Smuzhiyun // SPDX-License-Identifier: GPL-2.0-only
2*4882a593Smuzhiyun /*
3*4882a593Smuzhiyun * Smart reflex Class 3 specific implementations
4*4882a593Smuzhiyun *
5*4882a593Smuzhiyun * Author: Thara Gopinath <thara@ti.com>
6*4882a593Smuzhiyun *
7*4882a593Smuzhiyun * Copyright (C) 2010 Texas Instruments, Inc.
8*4882a593Smuzhiyun * Thara Gopinath <thara@ti.com>
9*4882a593Smuzhiyun */
10*4882a593Smuzhiyun
11*4882a593Smuzhiyun #include <linux/power/smartreflex.h>
12*4882a593Smuzhiyun #include "soc.h"
13*4882a593Smuzhiyun #include "voltage.h"
14*4882a593Smuzhiyun
sr_class3_enable(struct omap_sr * sr)15*4882a593Smuzhiyun static int sr_class3_enable(struct omap_sr *sr)
16*4882a593Smuzhiyun {
17*4882a593Smuzhiyun unsigned long volt = voltdm_get_voltage(sr->voltdm);
18*4882a593Smuzhiyun
19*4882a593Smuzhiyun if (!volt) {
20*4882a593Smuzhiyun pr_warn("%s: Curr voltage unknown. Cannot enable %s\n",
21*4882a593Smuzhiyun __func__, sr->name);
22*4882a593Smuzhiyun return -ENODATA;
23*4882a593Smuzhiyun }
24*4882a593Smuzhiyun
25*4882a593Smuzhiyun omap_vp_enable(sr->voltdm);
26*4882a593Smuzhiyun return sr_enable(sr, volt);
27*4882a593Smuzhiyun }
28*4882a593Smuzhiyun
sr_class3_disable(struct omap_sr * sr,int is_volt_reset)29*4882a593Smuzhiyun static int sr_class3_disable(struct omap_sr *sr, int is_volt_reset)
30*4882a593Smuzhiyun {
31*4882a593Smuzhiyun sr_disable_errgen(sr);
32*4882a593Smuzhiyun omap_vp_disable(sr->voltdm);
33*4882a593Smuzhiyun sr_disable(sr);
34*4882a593Smuzhiyun if (is_volt_reset)
35*4882a593Smuzhiyun voltdm_reset(sr->voltdm);
36*4882a593Smuzhiyun
37*4882a593Smuzhiyun return 0;
38*4882a593Smuzhiyun }
39*4882a593Smuzhiyun
sr_class3_configure(struct omap_sr * sr)40*4882a593Smuzhiyun static int sr_class3_configure(struct omap_sr *sr)
41*4882a593Smuzhiyun {
42*4882a593Smuzhiyun return sr_configure_errgen(sr);
43*4882a593Smuzhiyun }
44*4882a593Smuzhiyun
45*4882a593Smuzhiyun /* SR class3 structure */
46*4882a593Smuzhiyun static struct omap_sr_class_data class3_data = {
47*4882a593Smuzhiyun .enable = sr_class3_enable,
48*4882a593Smuzhiyun .disable = sr_class3_disable,
49*4882a593Smuzhiyun .configure = sr_class3_configure,
50*4882a593Smuzhiyun .class_type = SR_CLASS3,
51*4882a593Smuzhiyun };
52*4882a593Smuzhiyun
53*4882a593Smuzhiyun /* Smartreflex Class3 init API to be called from board file */
sr_class3_init(void)54*4882a593Smuzhiyun static int __init sr_class3_init(void)
55*4882a593Smuzhiyun {
56*4882a593Smuzhiyun pr_info("SmartReflex Class3 initialized\n");
57*4882a593Smuzhiyun return sr_register_class(&class3_data);
58*4882a593Smuzhiyun }
59*4882a593Smuzhiyun omap_late_initcall(sr_class3_init);
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