projects / linux-block.git / blame
| Commit | Line | Data |
|---|---|---|
| 45dd0e55 SB |
1 | /* |
| 2 | * Copyright (c) 2015, The Linux Foundation. All rights reserved. | |
| 3 | * | |
| 4 | * This program is free software; you can redistribute it and/or modify | |
| 5 | * it under the terms of the GNU General Public License version 2 and | |
| 6 | * only version 2 as published by the Free Software Foundation. | |
| 7 | * | |
| 8 | * This program is distributed in the hope that it will be useful, | |
| 9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 11 | * GNU General Public License for more details. | |
| 12 | */ | |
| 13 | ||
| 14 | #ifndef __QCOM_GDSC_H__ | |
| 15 | #define __QCOM_GDSC_H__ | |
| 16 | ||
| 17 | #include <linux/err.h> | |
| 18 | #include <linux/pm_domain.h> | |
| 19 | ||
| 20 | struct regmap; | |
| 3c53f5e2 | 21 | struct reset_controller_dev; |
| 45dd0e55 SB |
22 | |
| 23 | /** | |
| 24 | * struct gdsc - Globally Distributed Switch Controller | |
| 25 | * @pd: generic power domain | |
| 26 | * @regmap: regmap for MMIO accesses | |
| 27 | * @gdscr: gsdc control register | |
| 77b1067a | 28 | * @gds_hw_ctrl: gds_hw_ctrl register |
| 014e193c RN |
29 | * @cxcs: offsets of branch registers to toggle mem/periph bits in |
| 30 | * @cxc_count: number of @cxcs | |
| 31 | * @pwrsts: Possible powerdomain power states | |
| 3c53f5e2 RN |
32 | * @resets: ids of resets associated with this gdsc |
| 33 | * @reset_count: number of @resets | |
| 34 | * @rcdev: reset controller | |
| 45dd0e55 SB |
35 | */ |
| 36 | struct gdsc { | |
| 37 | struct generic_pm_domain pd; | |
| c2c7f0a4 | 38 | struct generic_pm_domain *parent; |
| 45dd0e55 SB |
39 | struct regmap *regmap; |
| 40 | unsigned int gdscr; | |
| 77b1067a | 41 | unsigned int gds_hw_ctrl; |
| e7cc455f | 42 | unsigned int clamp_io_ctrl; |
| 014e193c RN |
43 | unsigned int *cxcs; |
| 44 | unsigned int cxc_count; | |
| 45 | const u8 pwrsts; | |
| a823bb9f RN |
46 | /* Powerdomain allowable state bitfields */ |
| 47 | #define PWRSTS_OFF BIT(0) | |
| 48 | #define PWRSTS_RET BIT(1) | |
| 49 | #define PWRSTS_ON BIT(2) | |
| 50 | #define PWRSTS_OFF_ON (PWRSTS_OFF | PWRSTS_ON) | |
| 51 | #define PWRSTS_RET_ON (PWRSTS_RET | PWRSTS_ON) | |
| 52 | const u8 flags; | |
| 53 | #define VOTABLE BIT(0) | |
| e7cc455f | 54 | #define CLAMP_IO BIT(1) |
| 904bb4f5 | 55 | #define HW_CTRL BIT(2) |
| 3c53f5e2 RN |
56 | struct reset_controller_dev *rcdev; |
| 57 | unsigned int *resets; | |
| 58 | unsigned int reset_count; | |
| 45dd0e55 SB |
59 | }; |
| 60 | ||
| c2c7f0a4 RN |
61 | struct gdsc_desc { |
| 62 | struct device *dev; | |
| 63 | struct gdsc **scs; | |
| 64 | size_t num; | |
| 65 | }; | |
| 66 | ||
| 45dd0e55 | 67 | #ifdef CONFIG_QCOM_GDSC |
| c2c7f0a4 RN |
68 | int gdsc_register(struct gdsc_desc *desc, struct reset_controller_dev *, |
| 69 | struct regmap *); | |
| 70 | void gdsc_unregister(struct gdsc_desc *desc); | |
| 45dd0e55 | 71 | #else |
| c2c7f0a4 | 72 | static inline int gdsc_register(struct gdsc_desc *desc, |
| 3c53f5e2 | 73 | struct reset_controller_dev *rcdev, |
| 45dd0e55 SB |
74 | struct regmap *r) |
| 75 | { | |
| 76 | return -ENOSYS; | |
| 77 | } | |
| 78 | ||
| c2c7f0a4 | 79 | static inline void gdsc_unregister(struct gdsc_desc *desc) {}; |
| 45dd0e55 SB |
80 | #endif /* CONFIG_QCOM_GDSC */ |
| 81 | #endif /* __QCOM_GDSC_H__ */ |