developer | e5e687d | 2023-08-08 16:05:33 +0800 | [diff] [blame] | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
| 2 | /* |
| 3 | * Copyright (c) 2023 MediaTek Inc. All Rights Reserved. |
| 4 | * |
| 5 | * Author: Ren-Ting Wang <ren-ting.wang@mediatek.com> |
| 6 | */ |
| 7 | |
| 8 | #include <linux/device.h> |
| 9 | |
developer | 0fb30d5 | 2023-12-04 09:51:36 +0800 | [diff] [blame] | 10 | #include "tops/firmware.h" |
| 11 | #include "tops/internal.h" |
| 12 | #include "tops/mcu.h" |
| 13 | #include "tops/trm.h" |
| 14 | #include "tops/tunnel.h" |
| 15 | #include "tops/wdt.h" |
developer | e5e687d | 2023-08-08 16:05:33 +0800 | [diff] [blame] | 16 | |
| 17 | static int mtk_tops_trm_fetch_setting(const char *buf, |
| 18 | int *ofs, |
| 19 | char *name, |
| 20 | u32 *offset, |
| 21 | u32 *size, |
| 22 | u8 *enable) |
| 23 | { |
| 24 | int nchar = 0; |
| 25 | int ret = 0; |
| 26 | |
| 27 | ret = sscanf(buf + *ofs, "%31s %x %x %hhx %n", |
| 28 | name, offset, size, enable, &nchar); |
| 29 | if (ret != 4) |
| 30 | return -EPERM; |
| 31 | |
| 32 | *ofs += nchar; |
| 33 | |
| 34 | return nchar; |
| 35 | } |
| 36 | |
| 37 | static ssize_t mtk_tops_trm_store(struct device *dev, |
| 38 | struct device_attribute *attr, |
| 39 | const char *buf, |
| 40 | size_t count) |
| 41 | { |
| 42 | char name[TRM_CONFIG_NAME_MAX_LEN] = { 0 }; |
| 43 | char cmd[21] = { 0 }; |
| 44 | int nchar = 0; |
| 45 | int ret = 0; |
| 46 | u32 offset; |
| 47 | u8 enable; |
| 48 | u32 size; |
| 49 | |
| 50 | ret = sscanf(buf, "%20s %n", cmd, &nchar); |
| 51 | if (ret != 1) |
| 52 | return -EPERM; |
| 53 | |
| 54 | if (!strcmp(cmd, "trm_dump")) { |
| 55 | ret = mtk_trm_dump(TRM_RSN_NULL); |
| 56 | if (ret) |
| 57 | return ret; |
| 58 | } else if (!strcmp(cmd, "trm_cfg_setup")) { |
| 59 | ret = mtk_tops_trm_fetch_setting(buf, &nchar, |
| 60 | name, &offset, &size, &enable); |
| 61 | if (ret < 0) |
| 62 | return ret; |
| 63 | |
| 64 | ret = mtk_trm_cfg_setup(name, offset, size, enable); |
| 65 | if (ret) |
| 66 | return ret; |
| 67 | } |
| 68 | |
| 69 | return count; |
| 70 | } |
| 71 | |
| 72 | static ssize_t mtk_tops_wdt_store(struct device *dev, |
| 73 | struct device_attribute *attr, |
| 74 | const char *buf, |
| 75 | size_t count) |
| 76 | { |
| 77 | char cmd[21] = {0}; |
| 78 | u32 core = 0; |
| 79 | u32 i; |
| 80 | int ret; |
| 81 | |
| 82 | ret = sscanf(buf, "%20s %x", cmd, &core); |
| 83 | if (ret != 2) |
| 84 | return -EPERM; |
| 85 | |
| 86 | core &= CORE_TOPS_MASK; |
| 87 | if (!strcmp(cmd, "WDT_TO")) { |
| 88 | for (i = 0; i < CORE_TOPS_NUM; i++) { |
| 89 | if (core & 0x1) |
| 90 | mtk_tops_wdt_trigger_timeout(i); |
| 91 | core >>= 1; |
| 92 | } |
| 93 | } else { |
| 94 | return -EINVAL; |
| 95 | } |
| 96 | |
| 97 | return count; |
| 98 | } |
| 99 | |
developer | e5e687d | 2023-08-08 16:05:33 +0800 | [diff] [blame] | 100 | static DEVICE_ATTR_WO(mtk_tops_trm); |
| 101 | static DEVICE_ATTR_WO(mtk_tops_wdt); |
| 102 | |
| 103 | static struct attribute *mtk_tops_attributes[] = { |
developer | e5e687d | 2023-08-08 16:05:33 +0800 | [diff] [blame] | 104 | &dev_attr_mtk_tops_trm.attr, |
| 105 | &dev_attr_mtk_tops_wdt.attr, |
| 106 | NULL, |
| 107 | }; |
| 108 | |
| 109 | static const struct attribute_group mtk_tops_attr_group = { |
| 110 | .name = "mtk_tops", |
| 111 | .attrs = mtk_tops_attributes, |
| 112 | }; |
| 113 | |
| 114 | int mtk_tops_ctrl_init(struct platform_device *pdev) |
| 115 | { |
| 116 | int ret = 0; |
| 117 | |
| 118 | ret = sysfs_create_group(&pdev->dev.kobj, &mtk_tops_attr_group); |
| 119 | if (ret) { |
| 120 | TOPS_ERR("create sysfs failed\n"); |
| 121 | return ret; |
| 122 | } |
| 123 | |
| 124 | return ret; |
| 125 | } |
| 126 | |
| 127 | void mtk_tops_ctrl_deinit(struct platform_device *pdev) |
| 128 | { |
| 129 | sysfs_remove_group(&pdev->dev.kobj, &mtk_tops_attr_group); |
| 130 | } |