projects / people / ms / u-boot.git / blame
| Commit | Line | Data |
|---|---|---|
| 4dd99d14 SW |
1 | /* |
| 2 | * Copyright (c) 2016, NVIDIA CORPORATION. | |
| 3 | * | |
| 4 | * SPDX-License-Identifier: GPL-2.0 | |
| 5 | */ | |
| 6 | ||
| 7 | #include <common.h> | |
| 8 | #include <dm.h> | |
| 9 | #include <misc.h> | |
| 10 | #include <reset-uclass.h> | |
| 11 | #include <asm/arch-tegra/bpmp_abi.h> | |
| 12 | ||
| 13 | static int tegra186_reset_request(struct reset_ctl *reset_ctl) | |
| 14 | { | |
| 15 | debug("%s(reset_ctl=%p) (dev=%p, id=%lu)\n", __func__, reset_ctl, | |
| 16 | reset_ctl->dev, reset_ctl->id); | |
| 17 | ||
| 18 | return 0; | |
| 19 | } | |
| 20 | ||
| 21 | static int tegra186_reset_free(struct reset_ctl *reset_ctl) | |
| 22 | { | |
| 23 | debug("%s(reset_ctl=%p) (dev=%p, id=%lu)\n", __func__, reset_ctl, | |
| 24 | reset_ctl->dev, reset_ctl->id); | |
| 25 | ||
| 26 | return 0; | |
| 27 | } | |
| 28 | ||
| 29 | static int tegra186_reset_common(struct reset_ctl *reset_ctl, | |
| 30 | enum mrq_reset_commands cmd) | |
| 31 | { | |
| 32 | struct mrq_reset_request req; | |
| 33 | int ret; | |
| 34 | ||
| 35 | req.cmd = cmd; | |
| 36 | req.reset_id = reset_ctl->id; | |
| 37 | ||
| 38 | ret = misc_call(reset_ctl->dev->parent, MRQ_RESET, &req, sizeof(req), | |
| 39 | NULL, 0); | |
| 40 | if (ret < 0) | |
| 41 | return ret; | |
| 42 | ||
| 43 | return 0; | |
| 44 | } | |
| 45 | ||
| 46 | static int tegra186_reset_assert(struct reset_ctl *reset_ctl) | |
| 47 | { | |
| 48 | debug("%s(reset_ctl=%p) (dev=%p, id=%lu)\n", __func__, reset_ctl, | |
| 49 | reset_ctl->dev, reset_ctl->id); | |
| 50 | ||
| 51 | return tegra186_reset_common(reset_ctl, CMD_RESET_ASSERT); | |
| 52 | } | |
| 53 | ||
| 54 | static int tegra186_reset_deassert(struct reset_ctl *reset_ctl) | |
| 55 | { | |
| 56 | debug("%s(reset_ctl=%p) (dev=%p, id=%lu)\n", __func__, reset_ctl, | |
| 57 | reset_ctl->dev, reset_ctl->id); | |
| 58 | ||
| 59 | return tegra186_reset_common(reset_ctl, CMD_RESET_DEASSERT); | |
| 60 | } | |
| 61 | ||
| 62 | struct reset_ops tegra186_reset_ops = { | |
| 63 | .request = tegra186_reset_request, | |
| 64 | .free = tegra186_reset_free, | |
| 65 | .rst_assert = tegra186_reset_assert, | |
| 66 | .rst_deassert = tegra186_reset_deassert, | |
| 67 | }; | |
| 68 | ||
| 69 | static int tegra186_reset_probe(struct udevice *dev) | |
| 70 | { | |
| 71 | debug("%s(dev=%p)\n", __func__, dev); | |
| 72 | ||
| 73 | return 0; | |
| 74 | } | |
| 75 | ||
| 76 | U_BOOT_DRIVER(tegra186_reset) = { | |
| 77 | .name = "tegra186_reset", | |
| 78 | .id = UCLASS_RESET, | |
| 79 | .probe = tegra186_reset_probe, | |
| 80 | .ops = &tegra186_reset_ops, | |
| 81 | }; |