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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 | // SPDX-License-Identifier: GPL-2.0+ /* * (C) Copyright 2017 * Mario Six, Guntermann & Drunck GmbH, mario.six@gdsys.cc */ #define LOG_CATEGORY UCLASS_SYSINFO #include <dm.h> #include <sysinfo.h> struct sysinfo_priv { bool detected; }; int sysinfo_get(struct udevice **devp) { int ret = uclass_first_device_err(UCLASS_SYSINFO, devp); /* * There is some very dodgy error handling in gazerbeam, * do not return a device on error. */ if (ret) *devp = NULL; return ret; } int sysinfo_detect(struct udevice *dev) { int ret; struct sysinfo_priv *priv = dev_get_uclass_priv(dev); struct sysinfo_ops *ops = sysinfo_get_ops(dev); if (!ops->detect) return -ENOSYS; ret = ops->detect(dev); if (!ret) priv->detected = true; return ret; } int sysinfo_get_fit_loadable(struct udevice *dev, int index, const char *type, const char **strp) { struct sysinfo_priv *priv = dev_get_uclass_priv(dev); struct sysinfo_ops *ops = sysinfo_get_ops(dev); if (!priv->detected) return -EPERM; if (!ops->get_fit_loadable) return -ENOSYS; return ops->get_fit_loadable(dev, index, type, strp); } int sysinfo_get_bool(struct udevice *dev, int id, bool *val) { struct sysinfo_priv *priv = dev_get_uclass_priv(dev); struct sysinfo_ops *ops = sysinfo_get_ops(dev); if (!priv->detected) return -EPERM; if (!ops->get_bool) return -ENOSYS; return ops->get_bool(dev, id, val); } int sysinfo_get_int(struct udevice *dev, int id, int *val) { struct sysinfo_priv *priv = dev_get_uclass_priv(dev); struct sysinfo_ops *ops = sysinfo_get_ops(dev); if (!priv->detected) return -EPERM; if (!ops->get_int) return -ENOSYS; return ops->get_int(dev, id, val); } int sysinfo_get_str(struct udevice *dev, int id, size_t size, char *val) { struct sysinfo_priv *priv = dev_get_uclass_priv(dev); struct sysinfo_ops *ops = sysinfo_get_ops(dev); if (!priv->detected) return -EPERM; if (!ops->get_str) return -ENOSYS; return ops->get_str(dev, id, size, val); } UCLASS_DRIVER(sysinfo) = { .id = UCLASS_SYSINFO, .name = "sysinfo", .post_bind = dm_scan_fdt_dev, .per_device_auto = sizeof(bool), }; |