| David Brazdil | 0f672f6 | 2019-12-10 10:32:29 +0000 | [diff] [blame^] | 1 | // SPDX-License-Identifier: GPL-2.0-only |
| Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 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> |
| Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 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); |