Commit | Line | Data |
---|---|---|
9c80f3aa VH |
1 | /* |
2 | * AM33XX clockdomain control | |
3 | * | |
4 | * Copyright (C) 2011-2012 Texas Instruments Incorporated - http://www.ti.com/ | |
5 | * Vaibhav Hiremath <hvaibhav@ti.com> | |
6 | * | |
7 | * Derived from mach-omap2/clockdomain44xx.c written by Rajendra Nayak | |
8 | * | |
9 | * This program is free software; you can redistribute it and/or | |
10 | * modify it under the terms of the GNU General Public License as | |
11 | * published by the Free Software Foundation version 2. | |
12 | * | |
13 | * This program is distributed "as is" WITHOUT ANY WARRANTY of any | |
14 | * kind, whether express or implied; without even the implied warranty | |
15 | * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | * GNU General Public License for more details. | |
17 | */ | |
18 | ||
19 | #include <linux/kernel.h> | |
20 | ||
21 | #include "clockdomain.h" | |
22 | #include "cm33xx.h" | |
23 | ||
24 | ||
25 | static int am33xx_clkdm_sleep(struct clockdomain *clkdm) | |
26 | { | |
27 | am33xx_cm_clkdm_force_sleep(clkdm->cm_inst, clkdm->clkdm_offs); | |
28 | return 0; | |
29 | } | |
30 | ||
31 | static int am33xx_clkdm_wakeup(struct clockdomain *clkdm) | |
32 | { | |
33 | am33xx_cm_clkdm_force_wakeup(clkdm->cm_inst, clkdm->clkdm_offs); | |
34 | return 0; | |
35 | } | |
36 | ||
37 | static void am33xx_clkdm_allow_idle(struct clockdomain *clkdm) | |
38 | { | |
39 | am33xx_cm_clkdm_enable_hwsup(clkdm->cm_inst, clkdm->clkdm_offs); | |
40 | } | |
41 | ||
42 | static void am33xx_clkdm_deny_idle(struct clockdomain *clkdm) | |
43 | { | |
44 | am33xx_cm_clkdm_disable_hwsup(clkdm->cm_inst, clkdm->clkdm_offs); | |
45 | } | |
46 | ||
47 | static int am33xx_clkdm_clk_enable(struct clockdomain *clkdm) | |
48 | { | |
49 | if (clkdm->flags & CLKDM_CAN_FORCE_WAKEUP) | |
50 | return am33xx_clkdm_wakeup(clkdm); | |
51 | ||
52 | return 0; | |
53 | } | |
54 | ||
55 | static int am33xx_clkdm_clk_disable(struct clockdomain *clkdm) | |
56 | { | |
57 | bool hwsup = false; | |
58 | ||
59 | hwsup = am33xx_cm_is_clkdm_in_hwsup(clkdm->cm_inst, clkdm->clkdm_offs); | |
60 | ||
61 | if (!hwsup && (clkdm->flags & CLKDM_CAN_FORCE_SLEEP)) | |
62 | am33xx_clkdm_sleep(clkdm); | |
63 | ||
64 | return 0; | |
65 | } | |
66 | ||
67 | struct clkdm_ops am33xx_clkdm_operations = { | |
68 | .clkdm_sleep = am33xx_clkdm_sleep, | |
69 | .clkdm_wakeup = am33xx_clkdm_wakeup, | |
70 | .clkdm_allow_idle = am33xx_clkdm_allow_idle, | |
71 | .clkdm_deny_idle = am33xx_clkdm_deny_idle, | |
72 | .clkdm_clk_enable = am33xx_clkdm_clk_enable, | |
73 | .clkdm_clk_disable = am33xx_clkdm_clk_disable, | |
74 | }; |