diff options
| author | Corentin Chary <corentincj@iksaif.net> | 2011-02-26 10:20:39 +0100 |
|---|---|---|
| committer | Matthew Garrett <mjg@redhat.com> | 2011-03-28 06:07:22 -0400 |
| commit | ef343491db1770a3af5010ba007167c348cdbe1a (patch) | |
| tree | 6ca2aa949c72db33eb5f9b2c5dd12885e5e74ee6 /drivers/platform/x86/asus-wmi.c | |
| parent | 46dbca871df753ce92c321a41a8a38eba7487680 (diff) | |
| download | lwn-ef343491db1770a3af5010ba007167c348cdbe1a.tar.gz lwn-ef343491db1770a3af5010ba007167c348cdbe1a.zip | |
asus-wmi: allow debugfs interface to call arbitrary method
Also add some # format flags to debugfs output.
Signed-off-by: Corentin Chary <corentincj@iksaif.net>
Signed-off-by: Matthew Garrett <mjg@redhat.com>
Diffstat (limited to 'drivers/platform/x86/asus-wmi.c')
| -rw-r--r-- | drivers/platform/x86/asus-wmi.c | 47 |
1 files changed, 45 insertions, 2 deletions
diff --git a/drivers/platform/x86/asus-wmi.c b/drivers/platform/x86/asus-wmi.c index 88596ea0f74e..9095c28340cd 100644 --- a/drivers/platform/x86/asus-wmi.c +++ b/drivers/platform/x86/asus-wmi.c @@ -112,11 +112,14 @@ struct bios_args { * <platform>/ - debugfs root directory * dev_id - current dev_id * ctrl_param - current ctrl_param + * method_id - current method_id * devs - call DEVS(dev_id, ctrl_param) 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 dentry *root; + u32 method_id; u32 dev_id; u32 ctrl_param; }; @@ -1138,7 +1141,7 @@ static int show_dsts(struct seq_file *m, void *data) if (err < 0) 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; } @@ -1155,15 +1158,50 @@ static int show_devs(struct seq_file *m, void *data) if (err < 0) 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); 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[] = { {NULL, "devs", show_devs}, {NULL, "dsts", show_dsts}, + {NULL, "call", show_call}, }; 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; } + 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, asus->debug.root, &asus->debug.dev_id); if (!dent) |