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e0283cbd MS |
1 | // SPDX-License-Identifier: GPL-2.0 |
2 | /* | |
3 | * Copyright (c) 2021, Xilinx. Inc. | |
4 | */ | |
5 | ||
d678a59d | 6 | #include <common.h> |
e0283cbd | 7 | #include <dm.h> |
fda7cbfe | 8 | #include <dm/device_compat.h> |
e0283cbd MS |
9 | #include <log.h> |
10 | #include <malloc.h> | |
11 | #include <misc.h> | |
12 | #include <power-domain-uclass.h> | |
13 | #include <linux/bitops.h> | |
14 | ||
15 | #include <zynqmp_firmware.h> | |
16 | ||
e0283cbd MS |
17 | static int zynqmp_pm_request_node(const u32 node, const u32 capabilities, |
18 | const u32 qos, const enum zynqmp_pm_request_ack ack) | |
19 | { | |
20 | return xilinx_pm_request(PM_REQUEST_NODE, node, capabilities, | |
21 | qos, ack, NULL); | |
22 | } | |
23 | ||
24 | static int zynqmp_power_domain_request(struct power_domain *power_domain) | |
25 | { | |
d0f1af3e SH |
26 | int ret = 0; |
27 | ||
fda7cbfe | 28 | dev_dbg(power_domain->dev, "Request for id: %ld\n", power_domain->id); |
e0283cbd | 29 | |
d0f1af3e SH |
30 | if (IS_ENABLED(CONFIG_ARCH_ZYNQMP)) { |
31 | ret = zynqmp_pmufw_node(power_domain->id); | |
32 | if (ret == -ENODEV) | |
33 | ret = 0; | |
34 | } | |
ad8024e0 | 35 | |
d0f1af3e | 36 | return ret; |
e0283cbd MS |
37 | } |
38 | ||
39 | static int zynqmp_power_domain_free(struct power_domain *power_domain) | |
40 | { | |
41 | /* nop now */ | |
42 | return 0; | |
43 | } | |
44 | ||
45 | static int zynqmp_power_domain_on(struct power_domain *power_domain) | |
46 | { | |
fda7cbfe MS |
47 | dev_dbg(power_domain->dev, "Domain ON for id: %ld\n", power_domain->id); |
48 | ||
e0283cbd MS |
49 | return zynqmp_pm_request_node(power_domain->id, |
50 | ZYNQMP_PM_CAPABILITY_ACCESS, | |
51 | ZYNQMP_PM_MAX_QOS, | |
52 | ZYNQMP_PM_REQUEST_ACK_BLOCKING); | |
53 | } | |
54 | ||
55 | static int zynqmp_power_domain_off(struct power_domain *power_domain) | |
56 | { | |
57 | /* nop now */ | |
58 | return 0; | |
59 | } | |
60 | ||
61 | struct power_domain_ops zynqmp_power_domain_ops = { | |
62 | .request = zynqmp_power_domain_request, | |
63 | .rfree = zynqmp_power_domain_free, | |
64 | .on = zynqmp_power_domain_on, | |
65 | .off = zynqmp_power_domain_off, | |
66 | }; | |
67 | ||
68 | static int zynqmp_power_domain_probe(struct udevice *dev) | |
69 | { | |
70 | return 0; | |
71 | } | |
72 | ||
73 | U_BOOT_DRIVER(zynqmp_power_domain) = { | |
74 | .name = "zynqmp_power_domain", | |
75 | .id = UCLASS_POWER_DOMAIN, | |
76 | .probe = zynqmp_power_domain_probe, | |
77 | .ops = &zynqmp_power_domain_ops, | |
78 | }; |