mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-12-16 07:24:39 +08:00
5cdf6c09ca
For debug, the kernel debugfs mechanism is available. We can add various debug options for driver like module configuration read, firmware register read etc. This patch adds debugfs as a child to asoc plaform component and caller is added for skylake driver to do init and cleanup of debugfs. Signed-off-by: Vinod Koul <vinod.koul@intel.com> Signed-off-by: Vunny Sodhi <vunnyx.sodhi@intel.com> Signed-off-by: Guneshwor Singh <guneshwor.o.singh@intel.com> Signed-off-by: Mark Brown <broonie@kernel.org>
56 lines
1.3 KiB
C
56 lines
1.3 KiB
C
/*
|
|
* skl-debug.c - Debugfs for skl driver
|
|
*
|
|
* Copyright (C) 2016-17 Intel Corp
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; version 2 of the License.
|
|
*
|
|
* This program is distributed in the hope that it will be useful, but
|
|
* WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* General Public License for more details.
|
|
*/
|
|
|
|
#include <linux/pci.h>
|
|
#include <linux/debugfs.h>
|
|
#include "skl.h"
|
|
|
|
struct skl_debug {
|
|
struct skl *skl;
|
|
struct device *dev;
|
|
|
|
struct dentry *fs;
|
|
};
|
|
|
|
struct skl_debug *skl_debugfs_init(struct skl *skl)
|
|
{
|
|
struct skl_debug *d;
|
|
|
|
d = devm_kzalloc(&skl->pci->dev, sizeof(*d), GFP_KERNEL);
|
|
if (!d)
|
|
return NULL;
|
|
|
|
/* create the debugfs dir with platform component's debugfs as parent */
|
|
d->fs = debugfs_create_dir("dsp",
|
|
skl->platform->component.debugfs_root);
|
|
if (IS_ERR(d->fs) || !d->fs) {
|
|
dev_err(&skl->pci->dev, "debugfs root creation failed\n");
|
|
return NULL;
|
|
}
|
|
|
|
d->skl = skl;
|
|
d->dev = &skl->pci->dev;
|
|
|
|
return d;
|
|
}
|
|
|
|
void skl_debugfs_exit(struct skl_debug *d)
|
|
{
|
|
debugfs_remove_recursive(d->fs);
|
|
|
|
kfree(d);
|
|
|
|
}
|