Add sysfs entries for displaying version of FW currently in use as well as binary dump of entire version info, including build and log providers hashes.
Signed-off-by: Cezary Rojewski cezary.rojewski@intel.com ---
Changes in v2: - fixed size provided to memcpy() in fw_build_read() as reported by Mark
sound/soc/intel/catpt/fs.c | 79 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 79 insertions(+) create mode 100644 sound/soc/intel/catpt/fs.c
diff --git a/sound/soc/intel/catpt/fs.c b/sound/soc/intel/catpt/fs.c new file mode 100644 index 000000000000..d73493687f4a --- /dev/null +++ b/sound/soc/intel/catpt/fs.c @@ -0,0 +1,79 @@ +// SPDX-License-Identifier: GPL-2.0-pcm +// +// Copyright(c) 2020 Intel Corporation. All rights reserved. +// +// Author: Cezary Rojewski cezary.rojewski@intel.com +// + +#include <linux/pm_runtime.h> +#include "core.h" + +static ssize_t fw_version_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct catpt_dev *cdev = dev_get_drvdata(dev); + struct catpt_fw_version version; + int ret; + + pm_runtime_get_sync(cdev->dev); + + ret = catpt_ipc_get_fw_version(cdev, &version); + + pm_runtime_mark_last_busy(cdev->dev); + pm_runtime_put_autosuspend(cdev->dev); + + if (ret) + return CATPT_IPC_ERROR(ret); + + return sprintf(buf, "%d.%d.%d.%d\n", version.type, version.major, + version.minor, version.build); +} + +static DEVICE_ATTR_RO(fw_version); + +static ssize_t fw_build_read(struct file *filp, struct kobject *kobj, + struct bin_attribute *bin_attr, char *buf, + loff_t off, size_t count) +{ + struct catpt_dev *cdev = dev_get_drvdata(kobj_to_dev(kobj)); + struct catpt_fw_version version; + int ret; + + pm_runtime_get_sync(cdev->dev); + + ret = catpt_ipc_get_fw_version(cdev, &version); + + pm_runtime_mark_last_busy(cdev->dev); + pm_runtime_put_autosuspend(cdev->dev); + + if (ret) + return CATPT_IPC_ERROR(ret); + + memcpy(buf, &version, sizeof(version)); + return count; +} + +static BIN_ATTR_RO(fw_build, sizeof(struct catpt_fw_version)); + +int catpt_sysfs_create(struct catpt_dev *cdev) +{ + int ret; + + ret = sysfs_create_file(&cdev->dev->kobj, &dev_attr_fw_version.attr); + if (ret) + return ret; + + ret = sysfs_create_bin_file(&cdev->dev->kobj, &bin_attr_fw_build); + if (ret) { + sysfs_remove_file(&cdev->dev->kobj, &dev_attr_fw_version.attr); + return ret; + } + + return 0; +} + +void catpt_sysfs_remove(struct catpt_dev *cdev) +{ + sysfs_remove_bin_file(&cdev->dev->kobj, &bin_attr_fw_build); + sysfs_remove_file(&cdev->dev->kobj, &dev_attr_fw_version.attr); +}