Szymon Starzycki | b6c5f28 | 2013-07-24 17:08:04 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2009-2013, Google Inc. |
| 3 | * All rights reserved. |
| 4 | * |
| 5 | * Redistribution and use in source and binary forms, with or without |
| 6 | * modification, are permitted provided that the following conditions |
| 7 | * are met: |
| 8 | * * Redistributions of source code must retain the above copyright |
| 9 | * notice, this list of conditions and the following disclaimer. |
| 10 | * * Redistributions in binary form must reproduce the above copyright |
| 11 | * notice, this list of conditions and the following disclaimer in |
| 12 | * the documentation and/or other materials provided with the |
| 13 | * distribution. |
| 14 | * * Neither the name of Google, Inc. nor the names of its contributors |
| 15 | * may be used to endorse or promote products derived from this |
| 16 | * software without specific prior written permission. |
| 17 | * |
| 18 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| 19 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| 20 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS |
| 21 | * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE |
| 22 | * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, |
| 23 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, |
| 24 | * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS |
| 25 | * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED |
| 26 | * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
| 27 | * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT |
| 28 | * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 29 | * SUCH DAMAGE. |
| 30 | */ |
| 31 | |
| 32 | #include <dlfcn.h> |
| 33 | |
| 34 | #include <hardware/hardware.h> |
| 35 | #include "debug.h" |
| 36 | #include "trigger.h" |
| 37 | #include "protocol.h" |
| 38 | #include "vendor_trigger.h" |
| 39 | |
| 40 | static const int version = 1; |
| 41 | |
| 42 | static struct vendor_trigger_t *triggers = NULL; |
| 43 | |
| 44 | int load_trigger() { |
| 45 | int err; |
| 46 | hw_module_t* module; |
| 47 | hw_device_t* device; |
| 48 | int libversion; |
| 49 | |
| 50 | err = hw_get_module(TRIGGER_MODULE_ID, (hw_module_t const**)&module); |
| 51 | |
| 52 | if (err == 0) { |
| 53 | err = module->methods->open(module, NULL, &device); |
| 54 | |
| 55 | if (err == 0) { |
| 56 | triggers = (struct vendor_trigger_t *) device; |
| 57 | } else { |
| 58 | D(WARN, "Libvendor load error"); |
| 59 | return 1; |
| 60 | } |
| 61 | } |
| 62 | else { |
| 63 | D(WARN, "Libvendor not load: %s", strerror(-err)); |
| 64 | return 0; |
| 65 | } |
| 66 | |
| 67 | if (triggers->check_version != NULL && |
| 68 | triggers->check_version(version, &libversion)) { |
| 69 | |
| 70 | triggers = NULL; |
| 71 | D(ERR, "Library report incompability"); |
| 72 | return 1; |
| 73 | } |
| 74 | D(INFO, "libvendortrigger loaded"); |
| 75 | |
| 76 | return 0; |
| 77 | } |
| 78 | |
| 79 | int trigger_oem_cmd(const char *arg, const char **response) { |
| 80 | if (triggers != NULL && triggers->oem_cmd != NULL) |
| 81 | return triggers->oem_cmd(arg, response); |
| 82 | return 0; |
| 83 | } |
| 84 | |
| 85 | int trigger_gpt_layout(struct GPT_content *table) { |
| 86 | if (triggers != NULL && triggers->gpt_layout != NULL) |
| 87 | return triggers->gpt_layout(table); |
| 88 | return 0; |
| 89 | } |
| 90 | |