863dbc52e7
Now that the SPDX tag is in all greybus files, that identifies the license in a specific and legally-defined manner. So the extra GPL text wording can be removed as it is no longer needed at all. This is done on a quest to remove the 700+ different ways that files in the kernel describe the GPL license text. And there's unneeded stuff like the address (sometimes incorrect) for the FSF which is never needed. No copyright headers or other non-license-description text was removed. Cc: Vaibhav Hiremath <hvaibhav.linux@gmail.com> Reviewed-by: Alex Elder <elder@linaro.org> Acked-by: Vaibhav Agarwal <vaibhav.sr@gmail.com> Acked-by: David Lin <dtwlin@gmail.com> Acked-by: Johan Hovold <johan@kernel.org> Acked-by: Viresh Kumar <viresh.kumar@linaro.org> Acked-by: Mark Greer <mgreer@animalcreek.com> Acked-by: Rui Miguel Silva <rmfrfs@gmail.com> Acked-by: "Bryan O'Donoghue" <pure.logic@nexus-software.ie> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
102 lines
2.2 KiB
C
102 lines
2.2 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Greybus operations
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*
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* Copyright 2015-2016 Google Inc.
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*/
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#include <linux/string.h>
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#include <linux/sysfs.h>
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#include "audio_manager.h"
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#include "audio_manager_private.h"
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static ssize_t manager_sysfs_add_store(
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struct kobject *kobj, struct kobj_attribute *attr,
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const char *buf, size_t count)
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{
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struct gb_audio_manager_module_descriptor desc = { {0} };
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int num = sscanf(buf,
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"name=%" GB_AUDIO_MANAGER_MODULE_NAME_LEN_SSCANF "s "
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"vid=%d pid=%d intf_id=%d i/p devices=0x%X o/p devices=0x%X",
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desc.name, &desc.vid, &desc.pid, &desc.intf_id,
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&desc.ip_devices, &desc.op_devices);
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if (num != 7)
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return -EINVAL;
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num = gb_audio_manager_add(&desc);
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if (num < 0)
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return -EINVAL;
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return count;
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}
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static struct kobj_attribute manager_add_attribute =
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__ATTR(add, 0664, NULL, manager_sysfs_add_store);
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static ssize_t manager_sysfs_remove_store(
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struct kobject *kobj, struct kobj_attribute *attr,
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const char *buf, size_t count)
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{
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int id;
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int num = kstrtoint(buf, 10, &id);
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if (num != 1)
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return -EINVAL;
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num = gb_audio_manager_remove(id);
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if (num)
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return num;
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return count;
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}
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static struct kobj_attribute manager_remove_attribute =
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__ATTR(remove, 0664, NULL, manager_sysfs_remove_store);
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static ssize_t manager_sysfs_dump_store(
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struct kobject *kobj, struct kobj_attribute *attr,
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const char *buf, size_t count)
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{
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int id;
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int num = kstrtoint(buf, 10, &id);
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if (num == 1) {
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num = gb_audio_manager_dump_module(id);
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if (num)
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return num;
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} else if (!strncmp("all", buf, 3)) {
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gb_audio_manager_dump_all();
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} else {
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return -EINVAL;
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}
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return count;
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}
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static struct kobj_attribute manager_dump_attribute =
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__ATTR(dump, 0664, NULL, manager_sysfs_dump_store);
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static void manager_sysfs_init_attribute(
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struct kobject *kobj, struct kobj_attribute *kattr)
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{
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int err;
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err = sysfs_create_file(kobj, &kattr->attr);
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if (err) {
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pr_warn("creating the sysfs entry for %s failed: %d\n",
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kattr->attr.name, err);
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}
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}
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void gb_audio_manager_sysfs_init(struct kobject *kobj)
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{
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manager_sysfs_init_attribute(kobj, &manager_add_attribute);
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manager_sysfs_init_attribute(kobj, &manager_remove_attribute);
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manager_sysfs_init_attribute(kobj, &manager_dump_attribute);
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}
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