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6e0ad1b6 SB |
1 | /* |
2 | * Copyright (c) 2013, The Linux Foundation. All rights reserved. | |
3 | * | |
4 | * This software is licensed under the terms of the GNU General Public | |
5 | * License version 2, as published by the Free Software Foundation, and | |
6 | * may be copied, distributed, and modified under those terms. | |
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_CLK_BRANCH_H__ | |
15 | #define __QCOM_CLK_BRANCH_H__ | |
16 | ||
17 | #include <linux/clk-provider.h> | |
18 | ||
19 | #include "clk-regmap.h" | |
20 | ||
21 | /** | |
22 | * struct clk_branch - gating clock with status bit and dynamic hardware gating | |
23 | * | |
24 | * @hwcg_reg: dynamic hardware clock gating register | |
25 | * @hwcg_bit: ORed with @hwcg_reg to enable dynamic hardware clock gating | |
26 | * @halt_reg: halt register | |
27 | * @halt_bit: ANDed with @halt_reg to test for clock halted | |
28 | * @halt_check: type of halt checking to perform | |
29 | * @clkr: handle between common and hardware-specific interfaces | |
30 | * | |
31 | * Clock which can gate its output. | |
32 | */ | |
33 | struct clk_branch { | |
34 | u32 hwcg_reg; | |
35 | u32 halt_reg; | |
36 | u8 hwcg_bit; | |
37 | u8 halt_bit; | |
38 | u8 halt_check; | |
39 | #define BRANCH_VOTED BIT(7) /* Delay on disable */ | |
40 | #define BRANCH_HALT 0 /* pol: 1 = halt */ | |
41 | #define BRANCH_HALT_VOTED (BRANCH_HALT | BRANCH_VOTED) | |
42 | #define BRANCH_HALT_ENABLE 1 /* pol: 0 = halt */ | |
43 | #define BRANCH_HALT_ENABLE_VOTED (BRANCH_HALT_ENABLE | BRANCH_VOTED) | |
44 | #define BRANCH_HALT_DELAY 2 /* No bit to check; just delay */ | |
45 | ||
46 | struct clk_regmap clkr; | |
47 | }; | |
48 | ||
49 | extern const struct clk_ops clk_branch_ops; | |
50 | extern const struct clk_ops clk_branch2_ops; | |
51 | extern const struct clk_ops clk_branch_simple_ops; | |
52 | ||
53 | #define to_clk_branch(_hw) \ | |
54 | container_of(to_clk_regmap(_hw), struct clk_branch, clkr) | |
55 | ||
56 | #endif |