| | 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_warning("%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->voltdm, volt); |
| | 30 | } |
| | 31 | |
| | 32 | static int sr_class3_disable(struct omap_sr *sr, int is_volt_reset) |
| | 33 | { |
| | 34 | sr_disable_errgen(sr->voltdm); |
| | 35 | omap_vp_disable(sr->voltdm); |
| | 36 | sr_disable(sr->voltdm); |
| | 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->voltdm); |
| | 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); |
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