projects / mirror_ubuntu-artful-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| bde440ee BA |
1 | /* |
| 2 | * Qualcomm Peripheral Image Loader helpers | |
| 3 | * | |
| 4 | * Copyright (C) 2016 Linaro Ltd | |
| 5 | * Copyright (C) 2015 Sony Mobile Communications Inc | |
| 6 | * Copyright (c) 2012-2013, The Linux Foundation. All rights reserved. | |
| 7 | * | |
| 8 | * This program is free software; you can redistribute it and/or | |
| 9 | * modify it under the terms of the GNU General Public License | |
| 10 | * version 2 as published by the Free Software Foundation. | |
| 11 | * | |
| 12 | * This program is distributed in the hope that it will be useful, | |
| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 15 | * GNU General Public License for more details. | |
| 16 | */ | |
| 17 | ||
| 18 | #include <linux/firmware.h> | |
| 19 | #include <linux/kernel.h> | |
| 20 | #include <linux/module.h> | |
| 21 | #include <linux/remoteproc.h> | |
| b90fcfcb | 22 | #include <linux/rpmsg/qcom_smd.h> |
| bde440ee BA |
23 | |
| 24 | #include "remoteproc_internal.h" | |
| 25 | #include "qcom_common.h" | |
| 26 | ||
| b90fcfcb BA |
27 | #define to_smd_subdev(d) container_of(d, struct qcom_rproc_subdev, subdev) |
| 28 | ||
| bde440ee BA |
29 | /** |
| 30 | * qcom_mdt_find_rsc_table() - provide dummy resource table for remoteproc | |
| 31 | * @rproc: remoteproc handle | |
| 32 | * @fw: firmware header | |
| 33 | * @tablesz: outgoing size of the table | |
| 34 | * | |
| 35 | * Returns a dummy table. | |
| 36 | */ | |
| 37 | struct resource_table *qcom_mdt_find_rsc_table(struct rproc *rproc, | |
| 38 | const struct firmware *fw, | |
| 39 | int *tablesz) | |
| 40 | { | |
| 41 | static struct resource_table table = { .ver = 1, }; | |
| 42 | ||
| 43 | *tablesz = sizeof(table); | |
| 44 | return &table; | |
| 45 | } | |
| 46 | EXPORT_SYMBOL_GPL(qcom_mdt_find_rsc_table); | |
| 47 | ||
| b90fcfcb BA |
48 | static int smd_subdev_probe(struct rproc_subdev *subdev) |
| 49 | { | |
| 50 | struct qcom_rproc_subdev *smd = to_smd_subdev(subdev); | |
| 51 | ||
| 52 | smd->edge = qcom_smd_register_edge(smd->dev, smd->node); | |
| 53 | ||
| 54 | return IS_ERR(smd->edge) ? PTR_ERR(smd->edge) : 0; | |
| 55 | } | |
| 56 | ||
| 57 | static void smd_subdev_remove(struct rproc_subdev *subdev) | |
| 58 | { | |
| 59 | struct qcom_rproc_subdev *smd = to_smd_subdev(subdev); | |
| 60 | ||
| 61 | qcom_smd_unregister_edge(smd->edge); | |
| 62 | smd->edge = NULL; | |
| 63 | } | |
| 64 | ||
| 65 | /** | |
| 66 | * qcom_add_smd_subdev() - try to add a SMD subdevice to rproc | |
| 67 | * @rproc: rproc handle to parent the subdevice | |
| 68 | * @smd: reference to a Qualcomm subdev context | |
| 69 | */ | |
| 70 | void qcom_add_smd_subdev(struct rproc *rproc, struct qcom_rproc_subdev *smd) | |
| 71 | { | |
| 72 | struct device *dev = &rproc->dev; | |
| 73 | ||
| 74 | smd->node = of_get_child_by_name(dev->parent->of_node, "smd-edge"); | |
| 75 | if (!smd->node) | |
| 76 | return; | |
| 77 | ||
| 78 | smd->dev = dev; | |
| 79 | rproc_add_subdev(rproc, &smd->subdev, smd_subdev_probe, smd_subdev_remove); | |
| 80 | } | |
| 81 | EXPORT_SYMBOL_GPL(qcom_add_smd_subdev); | |
| 82 | ||
| 83 | /** | |
| 84 | * qcom_remove_smd_subdev() - remove the smd subdevice from rproc | |
| 85 | * @rproc: rproc handle | |
| 86 | * @smd: the SMD subdevice to remove | |
| 87 | */ | |
| 88 | void qcom_remove_smd_subdev(struct rproc *rproc, struct qcom_rproc_subdev *smd) | |
| 89 | { | |
| 90 | rproc_remove_subdev(rproc, &smd->subdev); | |
| 91 | of_node_put(smd->node); | |
| 92 | } | |
| 93 | EXPORT_SYMBOL_GPL(qcom_remove_smd_subdev); | |
| 94 | ||
| bde440ee BA |
95 | MODULE_DESCRIPTION("Qualcomm Remoteproc helper driver"); |
| 96 | MODULE_LICENSE("GPL v2"); |