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eeepc-wmi: add debugfs entries
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@iksaif.net> Signed-off-by: Matthew Garrett <mjg@redhat.com>
This commit is contained in:
Corentin Chary
Matthew Garrett
parent
4e37b42d5a
commit
8c1b2d83e8
@ -36,6 +36,8 @@
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#include <linux/backlight.h>
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#include <linux/leds.h>
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#include <linux/rfkill.h>
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#include <linux/debugfs.h>
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#include <linux/seq_file.h>
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#include <linux/platform_device.h>
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#include <acpi/acpi_bus.h>
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#include <acpi/acpi_drivers.h>
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@ -89,6 +91,19 @@ struct bios_args {
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u32 ctrl_param;
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};
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/*
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* eeepc-wmi/ - debugfs root directory
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* dev_id - current dev_id
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* ctrl_param - current ctrl_param
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* devs - call DEVS(dev_id, ctrl_param) and print result
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* dsts - call DSTS(dev_id) and print result
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*/
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struct eeepc_wmi_debug {
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struct dentry *root;
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u32 dev_id;
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u32 ctrl_param;
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};
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struct eeepc_wmi {
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struct input_dev *inputdev;
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struct backlight_device *backlight_device;
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@ -102,6 +117,8 @@ struct eeepc_wmi {
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struct rfkill *wlan_rfkill;
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struct rfkill *bluetooth_rfkill;
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struct rfkill *wwan3g_rfkill;
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struct eeepc_wmi_debug debug;
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};
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/* Only used in eeepc_wmi_init() and eeepc_wmi_exit() */
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@ -176,7 +193,8 @@ static acpi_status eeepc_wmi_get_devstate(u32 dev_id, u32 *ctrl_param)
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}
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static acpi_status eeepc_wmi_set_devstate(u32 dev_id, u32 ctrl_param)
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static acpi_status eeepc_wmi_set_devstate(u32 dev_id, u32 ctrl_param,
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u32 *retval)
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{
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struct bios_args args = {
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.dev_id = dev_id,
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@ -185,8 +203,32 @@ static acpi_status eeepc_wmi_set_devstate(u32 dev_id, u32 ctrl_param)
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struct acpi_buffer input = { (acpi_size)sizeof(args), &args };
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acpi_status status;
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status = wmi_evaluate_method(EEEPC_WMI_MGMT_GUID,
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1, EEEPC_WMI_METHODID_DEVS, &input, NULL);
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if (!retval) {
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status = wmi_evaluate_method(EEEPC_WMI_MGMT_GUID, 1,
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EEEPC_WMI_METHODID_DEVS,
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&input, NULL);
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} else {
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struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
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union acpi_object *obj;
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u32 tmp;
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status = wmi_evaluate_method(EEEPC_WMI_MGMT_GUID, 1,
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EEEPC_WMI_METHODID_DEVS,
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&input, &output);
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if (ACPI_FAILURE(status))
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return status;
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obj = (union acpi_object *)output.pointer;
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if (obj && obj->type == ACPI_TYPE_INTEGER)
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tmp = (u32)obj->integer.value;
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else
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tmp = 0;
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*retval = tmp;
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kfree(obj);
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}
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return status;
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}
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@ -208,7 +250,7 @@ static void tpd_led_update(struct work_struct *work)
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eeepc = container_of(work, struct eeepc_wmi, tpd_led_work);
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ctrl_param = eeepc->tpd_led_wk;
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eeepc_wmi_set_devstate(EEEPC_WMI_DEVID_TPDLED, ctrl_param);
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eeepc_wmi_set_devstate(EEEPC_WMI_DEVID_TPDLED, ctrl_param, NULL);
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}
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static void tpd_led_set(struct led_classdev *led_cdev,
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@ -295,7 +337,7 @@ static int eeepc_rfkill_set(void *data, bool blocked)
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int dev_id = (unsigned long)data;
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u32 ctrl_param = !blocked;
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return eeepc_wmi_set_devstate(dev_id, ctrl_param);
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return eeepc_wmi_set_devstate(dev_id, ctrl_param, NULL);
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}
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static void eeepc_rfkill_query(struct rfkill *rfkill, void *data)
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@ -434,7 +476,8 @@ static int update_bl_status(struct backlight_device *bd)
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ctrl_param = bd->props.brightness;
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status = eeepc_wmi_set_devstate(EEEPC_WMI_DEVID_BACKLIGHT, ctrl_param);
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status = eeepc_wmi_set_devstate(EEEPC_WMI_DEVID_BACKLIGHT,
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ctrl_param, NULL);
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if (ACPI_FAILURE(status))
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return -1;
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@ -613,6 +656,114 @@ static void eeepc_wmi_platform_exit(struct eeepc_wmi *eeepc)
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platform_device_unregister(eeepc->platform_device);
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}
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/*
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* debugfs
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*/
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struct eeepc_wmi_debugfs_node {
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struct eeepc_wmi *eeepc;
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char *name;
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int (*show)(struct seq_file *m, void *data);
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};
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static int show_dsts(struct seq_file *m, void *data)
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{
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struct eeepc_wmi *eeepc = m->private;
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acpi_status status;
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u32 retval = -1;
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status = eeepc_wmi_get_devstate(eeepc->debug.dev_id, &retval);
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if (ACPI_FAILURE(status))
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return -EIO;
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seq_printf(m, "DSTS(%x) = %x\n", eeepc->debug.dev_id, retval);
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return 0;
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}
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static int show_devs(struct seq_file *m, void *data)
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{
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struct eeepc_wmi *eeepc = m->private;
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acpi_status status;
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u32 retval = -1;
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status = eeepc_wmi_set_devstate(eeepc->debug.dev_id,
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eeepc->debug.ctrl_param, &retval);
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if (ACPI_FAILURE(status))
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return -EIO;
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seq_printf(m, "DEVS(%x, %x) = %x\n", eeepc->debug.dev_id,
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eeepc->debug.ctrl_param, retval);
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return 0;
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}
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static struct eeepc_wmi_debugfs_node eeepc_wmi_debug_files[] = {
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{ NULL, "devs", show_devs },
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{ NULL, "dsts", show_dsts },
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};
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static int eeepc_wmi_debugfs_open(struct inode *inode, struct file *file)
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{
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struct eeepc_wmi_debugfs_node *node = inode->i_private;
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return single_open(file, node->show, node->eeepc);
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}
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static const struct file_operations eeepc_wmi_debugfs_io_ops = {
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.owner = THIS_MODULE,
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.open = eeepc_wmi_debugfs_open,
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.read = seq_read,
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.llseek = seq_lseek,
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.release = single_release,
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};
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static void eeepc_wmi_debugfs_exit(struct eeepc_wmi *eeepc)
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{
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debugfs_remove_recursive(eeepc->debug.root);
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}
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static int eeepc_wmi_debugfs_init(struct eeepc_wmi *eeepc)
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{
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struct dentry *dent;
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int i;
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eeepc->debug.root = debugfs_create_dir(EEEPC_WMI_FILE, NULL);
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if (!eeepc->debug.root) {
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pr_err("failed to create debugfs directory");
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goto error_debugfs;
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}
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dent = debugfs_create_x32("dev_id", S_IRUGO|S_IWUSR,
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eeepc->debug.root, &eeepc->debug.dev_id);
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if (!dent)
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goto error_debugfs;
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dent = debugfs_create_x32("ctrl_param", S_IRUGO|S_IWUSR,
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eeepc->debug.root, &eeepc->debug.ctrl_param);
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if (!dent)
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goto error_debugfs;
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for (i = 0; i < ARRAY_SIZE(eeepc_wmi_debug_files); i++) {
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struct eeepc_wmi_debugfs_node *node = &eeepc_wmi_debug_files[i];
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node->eeepc = eeepc;
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dent = debugfs_create_file(node->name, S_IFREG | S_IRUGO,
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eeepc->debug.root, node,
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&eeepc_wmi_debugfs_io_ops);
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if (!dent) {
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pr_err("failed to create debug file: %s\n", node->name);
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goto error_debugfs;
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}
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}
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return 0;
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error_debugfs:
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eeepc_wmi_debugfs_exit(eeepc);
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return -ENOMEM;
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}
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/*
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* WMI Driver
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*/
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@ -662,8 +813,14 @@ static struct platform_device * __init eeepc_wmi_add(void)
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goto fail_wmi_handler;
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}
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err = eeepc_wmi_debugfs_init(eeepc);
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if (err)
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goto fail_debugfs;
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return eeepc->platform_device;
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fail_debugfs:
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wmi_remove_notify_handler(EEEPC_WMI_EVENT_GUID);
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fail_wmi_handler:
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eeepc_wmi_backlight_exit(eeepc);
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fail_backlight:
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@ -689,6 +846,7 @@ static int eeepc_wmi_remove(struct platform_device *device)
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eeepc_wmi_input_exit(eeepc);
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eeepc_wmi_led_exit(eeepc);
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eeepc_wmi_rfkill_exit(eeepc);
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eeepc_wmi_debugfs_exit(eeepc);
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eeepc_wmi_platform_exit(eeepc);
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kfree(eeepc);
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