From 8c1b2d83e82e11b9447d7fb3715d6c9764f6f28d Mon Sep 17 00:00:00 2001 From: Corentin Chary Date: Mon, 29 Nov 2010 08:14:09 +0100 Subject: [PATCH] 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 Signed-off-by: Matthew Garrett --- drivers/platform/x86/eeepc-wmi.c | 170 +++++++++++++++++++++++++++++++++++++-- 1 file changed, 164 insertions(+), 6 deletions(-) diff --git a/drivers/platform/x86/eeepc-wmi.c b/drivers/platform/x86/eeepc-wmi.c index a70d76a463a..253070ab963 100644 --- a/drivers/platform/x86/eeepc-wmi.c +++ b/drivers/platform/x86/eeepc-wmi.c @@ -36,6 +36,8 @@ #include #include #include +#include +#include #include #include #include @@ -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); -- 2.11.4.GIT