eeepc-wmi/ - debugfs root directory
dev_id - current dev_id
ctrl_param - current ctrl_param
devs - call DEVS(dev_id, ctrl_param) and print result
dsts - call DSTS(dev_id) and print result
DEVS and DSTS are the main functions used in eeepc-wmi, this
will allow to test new features without patching the drivers.
Signed-off-by: Corentin Chary <corentincj@xxxxxxxxxx>
---
drivers/platform/x86/eeepc-wmi.c | 170 ++++++++++++++++++++++++++++++++++++--
1 files changed, 164 insertions(+), 6 deletions(-)
diff --git a/drivers/platform/x86/eeepc-wmi.c b/drivers/platform/x86/eeepc-wmi.c
index a70d76a..253070a 100644
--- a/drivers/platform/x86/eeepc-wmi.c
+++ b/drivers/platform/x86/eeepc-wmi.c
@@ -36,6 +36,8 @@
#include <linux/backlight.h>
#include <linux/leds.h>
#include <linux/rfkill.h>
+#include <linux/debugfs.h>
+#include <linux/seq_file.h>
#include <linux/platform_device.h>
#include <acpi/acpi_bus.h>
#include <acpi/acpi_drivers.h>
@@ -89,6 +91,19 @@ struct bios_args {
u32 ctrl_param;
};
+/*
+ * eeepc-wmi/ - debugfs root directory
+ * dev_id - current dev_id
+ * ctrl_param - current ctrl_param
+ * devs - call DEVS(dev_id, ctrl_param) and print result
+ * dsts - call DSTS(dev_id) and print result
+ */
+struct eeepc_wmi_debug {
+ struct dentry *root;
+ u32 dev_id;
+ u32 ctrl_param;
+};
+
struct eeepc_wmi {
struct input_dev *inputdev;
struct backlight_device *backlight_device;
@@ -102,6 +117,8 @@ struct eeepc_wmi {
struct rfkill *wlan_rfkill;
struct rfkill *bluetooth_rfkill;
struct rfkill *wwan3g_rfkill;
+
+ struct eeepc_wmi_debug debug;
};
/* Only used in eeepc_wmi_init() and eeepc_wmi_exit() */
@@ -176,7 +193,8 @@ static acpi_status eeepc_wmi_get_devstate(u32 dev_id, u32 *ctrl_param)
}
-static acpi_status eeepc_wmi_set_devstate(u32 dev_id, u32 ctrl_param)
+static acpi_status eeepc_wmi_set_devstate(u32 dev_id, u32 ctrl_param,
+ u32 *retval)
{
struct bios_args args = {
.dev_id = dev_id,
@@ -185,8 +203,32 @@ static acpi_status eeepc_wmi_set_devstate(u32 dev_id, u32 ctrl_param)
struct acpi_buffer input = { (acpi_size)sizeof(args), &args };
acpi_status status;
- status = wmi_evaluate_method(EEEPC_WMI_MGMT_GUID,
- 1, EEEPC_WMI_METHODID_DEVS, &input, NULL);
+ if (!retval) {
+ status = wmi_evaluate_method(EEEPC_WMI_MGMT_GUID, 1,
+ EEEPC_WMI_METHODID_DEVS,
+ &input, NULL);
+ } else {
+ struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
+ union acpi_object *obj;
+ u32 tmp;
+
+ status = wmi_evaluate_method(EEEPC_WMI_MGMT_GUID, 1,
+ EEEPC_WMI_METHODID_DEVS,
+ &input, &output);
+
+ if (ACPI_FAILURE(status))
+ return status;
+
+ obj = (union acpi_object *)output.pointer;
+ if (obj && obj->type == ACPI_TYPE_INTEGER)
+ tmp = (u32)obj->integer.value;
+ else
+ tmp = 0;
+
+ *retval = tmp;
+
+ kfree(obj);
+ }
return status;
}
@@ -208,7 +250,7 @@ static void tpd_led_update(struct work_struct *work)
eeepc = container_of(work, struct eeepc_wmi, tpd_led_work);
ctrl_param = eeepc->tpd_led_wk;
- eeepc_wmi_set_devstate(EEEPC_WMI_DEVID_TPDLED, ctrl_param);
+ eeepc_wmi_set_devstate(EEEPC_WMI_DEVID_TPDLED, ctrl_param, NULL);
}
static void tpd_led_set(struct led_classdev *led_cdev,
@@ -295,7 +337,7 @@ static int eeepc_rfkill_set(void *data, bool blocked)
int dev_id = (unsigned long)data;
u32 ctrl_param = !blocked;
- return eeepc_wmi_set_devstate(dev_id, ctrl_param);
+ return eeepc_wmi_set_devstate(dev_id, ctrl_param, NULL);
}
static void eeepc_rfkill_query(struct rfkill *rfkill, void *data)
@@ -434,7 +476,8 @@ static int update_bl_status(struct backlight_device *bd)
ctrl_param = bd->props.brightness;
- status = eeepc_wmi_set_devstate(EEEPC_WMI_DEVID_BACKLIGHT, ctrl_param);
+ status = eeepc_wmi_set_devstate(EEEPC_WMI_DEVID_BACKLIGHT,
+ ctrl_param, NULL);
if (ACPI_FAILURE(status))
return -1;
@@ -614,6 +657,114 @@ static void eeepc_wmi_platform_exit(struct eeepc_wmi *eeepc)
}
/*
+ * debugfs
+ */
+struct eeepc_wmi_debugfs_node {
+ struct eeepc_wmi *eeepc;
+ char *name;
+ int (*show)(struct seq_file *m, void *data);
+};
+
+static int show_dsts(struct seq_file *m, void *data)
+{
+ struct eeepc_wmi *eeepc = m->private;
+ acpi_status status;
+ u32 retval = -1;
+
+ status = eeepc_wmi_get_devstate(eeepc->debug.dev_id, &retval);
+
+ if (ACPI_FAILURE(status))
+ return -EIO;
+
+ seq_printf(m, "DSTS(%x) = %x\n", eeepc->debug.dev_id, retval);
+
+ return 0;
+}
+
+static int show_devs(struct seq_file *m, void *data)
+{
+ struct eeepc_wmi *eeepc = m->private;
+ acpi_status status;
+ u32 retval = -1;
+
+ status = eeepc_wmi_set_devstate(eeepc->debug.dev_id,
+ eeepc->debug.ctrl_param, &retval);
+ if (ACPI_FAILURE(status))
+ return -EIO;
+
+ seq_printf(m, "DEVS(%x, %x) = %x\n", eeepc->debug.dev_id,
+ eeepc->debug.ctrl_param, retval);
+
+ return 0;
+}
+
+static struct eeepc_wmi_debugfs_node eeepc_wmi_debug_files[] = {
+ { NULL, "devs", show_devs },
+ { NULL, "dsts", show_dsts },
+};
+
+static int eeepc_wmi_debugfs_open(struct inode *inode, struct file *file)
+{
+ struct eeepc_wmi_debugfs_node *node = inode->i_private;
+
+ return single_open(file, node->show, node->eeepc);
+}
+
+static const struct file_operations eeepc_wmi_debugfs_io_ops = {
+ .owner = THIS_MODULE,
+ .open = eeepc_wmi_debugfs_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+};
+
+static void eeepc_wmi_debugfs_exit(struct eeepc_wmi *eeepc)
+{
+ debugfs_remove_recursive(eeepc->debug.root);
+}
+
+static int eeepc_wmi_debugfs_init(struct eeepc_wmi *eeepc)
+{
+ struct dentry *dent;
+ int i;
+
+ eeepc->debug.root = debugfs_create_dir(EEEPC_WMI_FILE, NULL);
+ if (!eeepc->debug.root) {
+ pr_err("failed to create debugfs directory");
+ goto error_debugfs;
+ }
+
+ dent = debugfs_create_x32("dev_id", S_IRUGO|S_IWUSR,
+ eeepc->debug.root, &eeepc->debug.dev_id);
+ if (!dent)
+ goto error_debugfs;
+
+ dent = debugfs_create_x32("ctrl_param", S_IRUGO|S_IWUSR,
+ eeepc->debug.root, &eeepc->debug.ctrl_param);
+ if (!dent)
+ goto error_debugfs;
+
+ for (i = 0; i < ARRAY_SIZE(eeepc_wmi_debug_files); i++) {
+ struct eeepc_wmi_debugfs_node *node = &eeepc_wmi_debug_files[i];
+
+ node->eeepc = eeepc;
+ dent = debugfs_create_file(node->name, S_IFREG | S_IRUGO,
+ eeepc->debug.root, node,
+ &eeepc_wmi_debugfs_io_ops);
+ if (!dent) {
+ pr_err("failed to create debug file: %s\n", node->name);
+ goto error_debugfs;
+ }
+ }
+
+ return 0;
+
+error_debugfs:
+ eeepc_wmi_debugfs_exit(eeepc);
+ return -ENOMEM;
+}
+
+/*
* WMI Driver
*/
static struct platform_device * __init eeepc_wmi_add(void)
@@ -662,8 +813,14 @@ static struct platform_device * __init eeepc_wmi_add(void)
goto fail_wmi_handler;
}
+ err = eeepc_wmi_debugfs_init(eeepc);
+ if (err)
+ goto fail_debugfs;
+
return eeepc->platform_device;
+fail_debugfs:
+ wmi_remove_notify_handler(EEEPC_WMI_EVENT_GUID);
fail_wmi_handler:
eeepc_wmi_backlight_exit(eeepc);
fail_backlight:
@@ -689,6 +846,7 @@ static int eeepc_wmi_remove(struct platform_device *device)
eeepc_wmi_input_exit(eeepc);
eeepc_wmi_led_exit(eeepc);
eeepc_wmi_rfkill_exit(eeepc);
+ eeepc_wmi_debugfs_exit(eeepc);
eeepc_wmi_platform_exit(eeepc);
kfree(eeepc);
--
1.7.3.2
--
To unsubscribe from this list: send the line "unsubscribe platform-driver-x86" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
