| xj | b04a402 | 2021-11-25 15:01:52 +0800 | [diff] [blame] | 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 <linux/power/smartreflex.h> |
| 15 | #include "soc.h" |
| 16 | #include "voltage.h" |
| 17 | |
| 18 | static int sr_class3_enable(struct omap_sr *sr) |
| 19 | { |
| 20 | unsigned long volt = voltdm_get_voltage(sr->voltdm); |
| 21 | |
| 22 | if (!volt) { |
| 23 | pr_warn("%s: Curr voltage unknown. Cannot enable %s\n", |
| 24 | __func__, sr->name); |
| 25 | return -ENODATA; |
| 26 | } |
| 27 | |
| 28 | omap_vp_enable(sr->voltdm); |
| 29 | return sr_enable(sr, volt); |
| 30 | } |
| 31 | |
| 32 | static int sr_class3_disable(struct omap_sr *sr, int is_volt_reset) |
| 33 | { |
| 34 | sr_disable_errgen(sr); |
| 35 | omap_vp_disable(sr->voltdm); |
| 36 | sr_disable(sr); |
| 37 | if (is_volt_reset) |
| 38 | voltdm_reset(sr->voltdm); |
| 39 | |
| 40 | return 0; |
| 41 | } |
| 42 | |
| 43 | static int sr_class3_configure(struct omap_sr *sr) |
| 44 | { |
| 45 | return sr_configure_errgen(sr); |
| 46 | } |
| 47 | |
| 48 | /* SR class3 structure */ |
| 49 | static struct omap_sr_class_data class3_data = { |
| 50 | .enable = sr_class3_enable, |
| 51 | .disable = sr_class3_disable, |
| 52 | .configure = sr_class3_configure, |
| 53 | .class_type = SR_CLASS3, |
| 54 | }; |
| 55 | |
| 56 | /* Smartreflex Class3 init API to be called from board file */ |
| 57 | static int __init sr_class3_init(void) |
| 58 | { |
| 59 | pr_info("SmartReflex Class3 initialized\n"); |
| 60 | return sr_register_class(&class3_data); |
| 61 | } |
| 62 | omap_late_initcall(sr_class3_init); |