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83d290c5 | 1 | // SPDX-License-Identifier: GPL-2.0+ |
0753bc2d | 2 | /* |
3 | * Copyright 2017 Google, Inc | |
0753bc2d | 4 | */ |
5 | ||
d678a59d | 6 | #include <common.h> |
0753bc2d | 7 | #include <dm.h> |
0753bc2d | 8 | #include <wdt.h> |
78df5e1e | 9 | #include <asm/state.h> |
0753bc2d | 10 | |
0753bc2d | 11 | static int sandbox_wdt_start(struct udevice *dev, u64 timeout, ulong flags) |
12 | { | |
13 | struct sandbox_state *state = state_get_current(); | |
14 | ||
15 | state->wdt.counter = timeout; | |
16 | state->wdt.running = true; | |
17 | ||
18 | return 0; | |
19 | } | |
20 | ||
21 | static int sandbox_wdt_stop(struct udevice *dev) | |
22 | { | |
23 | struct sandbox_state *state = state_get_current(); | |
24 | ||
25 | state->wdt.running = false; | |
26 | ||
27 | return 0; | |
28 | } | |
29 | ||
30 | static int sandbox_wdt_reset(struct udevice *dev) | |
31 | { | |
32 | struct sandbox_state *state = state_get_current(); | |
33 | ||
34 | state->wdt.reset_count++; | |
35 | ||
36 | return 0; | |
37 | } | |
38 | ||
39 | static int sandbox_wdt_expire_now(struct udevice *dev, ulong flags) | |
40 | { | |
41 | sandbox_wdt_start(dev, 1, flags); | |
592e2e59 | 42 | sandbox_reset(); |
0753bc2d | 43 | |
44 | return 0; | |
45 | } | |
46 | ||
0753bc2d | 47 | static const struct wdt_ops sandbox_wdt_ops = { |
48 | .start = sandbox_wdt_start, | |
49 | .reset = sandbox_wdt_reset, | |
50 | .stop = sandbox_wdt_stop, | |
51 | .expire_now = sandbox_wdt_expire_now, | |
52 | }; | |
53 | ||
54 | static const struct udevice_id sandbox_wdt_ids[] = { | |
55 | { .compatible = "sandbox,wdt" }, | |
56 | {} | |
57 | }; | |
58 | ||
59 | U_BOOT_DRIVER(wdt_sandbox) = { | |
60 | .name = "wdt_sandbox", | |
61 | .id = UCLASS_WDT, | |
62 | .of_match = sandbox_wdt_ids, | |
63 | .ops = &sandbox_wdt_ops, | |
0753bc2d | 64 | }; |