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asus-wmi: allow debugfs interface to call arbitrary method

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Also add some # format flags to debugfs output.

Signed-off-by: Corentin Chary <corentincj@iksaif.net>
Signed-off-by: Matthew Garrett <mjg@redhat.com>
This commit is contained in:
Corentin Chary 2011-02-26 10:20:39 +01:00 committed by Matthew Garrett
parent 46dbca871d
commit ef343491db
1 changed files with 45 additions and 2 deletions
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47
drivers/platform/x86/asus-wmi.c
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@ -112,11 +112,14 @@ struct bios_args {
* <platform>/ - debugfs root directory * <platform>/ - debugfs root directory
* dev_id - current dev_id * dev_id - current dev_id
* ctrl_param - current ctrl_param * ctrl_param - current ctrl_param
* method_id - current method_id
* devs - call DEVS(dev_id, ctrl_param) and print result * devs - call DEVS(dev_id, ctrl_param) and print result
* dsts - call DSTS(dev_id) and print result * dsts - call DSTS(dev_id) and print result
* call - call method_id(dev_id, ctrl_param) and print result
*/ */
struct asus_wmi_debug { struct asus_wmi_debug {
struct dentry *root; struct dentry *root;
u32 method_id;
u32 dev_id; u32 dev_id;
u32 ctrl_param; u32 ctrl_param;
}; };
@ -1138,7 +1141,7 @@ static int show_dsts(struct seq_file *m, void *data)
if (err < 0) if (err < 0)
return err; return err;
seq_printf(m, "DSTS(%x) = %x\n", asus->debug.dev_id, retval); seq_printf(m, "DSTS(%#x) = %#x\n", asus->debug.dev_id, retval);
return 0; return 0;
} }
@ -1155,15 +1158,50 @@ static int show_devs(struct seq_file *m, void *data)
if (err < 0) if (err < 0)
return err; return err;
seq_printf(m, "DEVS(%x, %x) = %x\n", asus->debug.dev_id, seq_printf(m, "DEVS(%#x, %#x) = %#x\n", asus->debug.dev_id,
asus->debug.ctrl_param, retval); asus->debug.ctrl_param, retval);
return 0; return 0;
} }
static int show_call(struct seq_file *m, void *data)
{
struct asus_wmi *asus = m->private;
struct bios_args args = {
.arg0 = asus->debug.dev_id,
.arg1 = asus->debug.ctrl_param,
};
struct acpi_buffer input = { (acpi_size) sizeof(args), &args };
struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
union acpi_object *obj;
acpi_status status;
status = wmi_evaluate_method(ASUS_WMI_MGMT_GUID,
1, asus->debug.method_id,
&input, &output);
if (ACPI_FAILURE(status))
return -EIO;
obj = (union acpi_object *)output.pointer;
if (obj && obj->type == ACPI_TYPE_INTEGER)
seq_printf(m, "%#x(%#x, %#x) = %#x\n", asus->debug.method_id,
asus->debug.dev_id, asus->debug.ctrl_param,
(u32) obj->integer.value);
else
seq_printf(m, "%#x(%#x, %#x) = t:%d\n", asus->debug.method_id,
asus->debug.dev_id, asus->debug.ctrl_param,
obj->type);
kfree(obj);
return 0;
}
static struct asus_wmi_debugfs_node asus_wmi_debug_files[] = { static struct asus_wmi_debugfs_node asus_wmi_debug_files[] = {
{NULL, "devs", show_devs}, {NULL, "devs", show_devs},
{NULL, "dsts", show_dsts}, {NULL, "dsts", show_dsts},
{NULL, "call", show_call},
}; };
static int asus_wmi_debugfs_open(struct inode *inode, struct file *file) static int asus_wmi_debugfs_open(struct inode *inode, struct file *file)
@ -1197,6 +1235,11 @@ static int asus_wmi_debugfs_init(struct asus_wmi *asus)
goto error_debugfs; goto error_debugfs;
} }
dent = debugfs_create_x32("method_id", S_IRUGO | S_IWUSR,
asus->debug.root, &asus->debug.method_id);
if (!dent)
goto error_debugfs;
dent = debugfs_create_x32("dev_id", S_IRUGO | S_IWUSR, dent = debugfs_create_x32("dev_id", S_IRUGO | S_IWUSR,
asus->debug.root, &asus->debug.dev_id); asus->debug.root, &asus->debug.dev_id);
if (!dent) if (!dent)