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Message-Id: <1284457690-32635-1-git-send-email-keng-yu.lin@canonical.com>
Date: Tue, 14 Sep 2010 17:48:10 +0800
From: Keng-Yu Lin <keng-yu.lin@...onical.com>
To: len.brown@...el.com, alan-jenkins@...fmail.co.uk,
superm1@...ntu.com, platform-driver-x86@...r.kernel.org,
linux-kernel@...r.kernel.org
Cc: Keng-Yu Lin <keng-yu.lin@...onical.com>
Subject: [PATCH] dell-laptop: Add debugfs support
Export the status of RF killswitch through debugfs.
Signed-off-by: Keng-Yu Lin <keng-yu.lin@...onical.com>
---
drivers/platform/x86/dell-laptop.c | 83 ++++++++++++++++++++++++++++++++++++
1 files changed, 83 insertions(+), 0 deletions(-)
diff --git a/drivers/platform/x86/dell-laptop.c b/drivers/platform/x86/dell-laptop.c
index 6110601..0d390b3 100644
--- a/drivers/platform/x86/dell-laptop.c
+++ b/drivers/platform/x86/dell-laptop.c
@@ -25,6 +25,8 @@
#include <linux/mm.h>
#include <linux/i8042.h>
#include <linux/slab.h>
+#include <linux/debugfs.h>
+#include <linux/seq_file.h>
#include "../../firmware/dcdbas.h"
#define BRIGHTNESS_TOKEN 0x7d
@@ -319,6 +321,77 @@ static const struct rfkill_ops dell_rfkill_ops = {
.query = dell_rfkill_query,
};
+#ifdef CONFIG_DEBUG_FS
+static struct dentry *dell_laptop_dir;
+
+static int dell_debugfs_show(struct seq_file *s, void *data)
+{
+ int status;
+
+ get_buffer();
+ dell_send_request(buffer, 17, 11);
+ status = buffer->output[1];
+ release_buffer();
+
+ seq_printf(s, "status:\t0x%X\n", status);
+ seq_printf(s, "Hardware switch supported: %lu\n",
+ status & BIT(0));
+ seq_printf(s, "Wifi locator supported: %lu\n",
+ (status & BIT(1)) >> 1);
+ seq_printf(s, "Wifi is supported: %lu\n",
+ (status & BIT(2)) >> 2);
+ seq_printf(s, "Bluetooth is supported: %lu\n",
+ (status & BIT(3)) >> 3);
+ seq_printf(s, "WWAN is supported: %lu\n",
+ (status & BIT(4)) >> 4);
+ seq_printf(s, "Wireless keyboard supported: %lu\n",
+ (status & BIT(5)) >> 5);
+ seq_printf(s, "Wifi is installed: %lu\n",
+ (status & BIT(8)) >> 8);
+ seq_printf(s, "Bluetooth is installed: %lu\n",
+ (status & BIT(9)) >> 9);
+ seq_printf(s, "WWAN is installed: %lu\n",
+ (status & BIT(10)) >> 10);
+ seq_printf(s, "Hardware switch is on: %lu\n",
+ (status & BIT(16)) >> 16);
+ seq_printf(s, "Wifi is blocked: %lu\n",
+ (status & BIT(17)) >> 17);
+ seq_printf(s, "Bluetooth is blocked: %lu\n",
+ (status & BIT(18)) >> 18);
+ seq_printf(s, "WWAN is blocked: %lu\n",
+ (status & BIT(19)) >> 19);
+
+ seq_printf(s, "\nhwswitch_state:\t0x%X\n", hwswitch_state);
+ seq_printf(s, "Wifi controlled by switch: %lu\n",
+ hwswitch_state & BIT(0));
+ seq_printf(s, "Bluetooth controlled by switch: %lu\n",
+ hwswitch_state & BIT(0) >> 1);
+ seq_printf(s, "WWAN controlled by switch: %lu\n",
+ hwswitch_state & BIT(0) >> 2);
+ seq_printf(s, "Wireless switch config locked: %lu\n",
+ hwswitch_state & BIT(0) >> 7);
+ seq_printf(s, "Wifi locator enabled: %lu\n",
+ hwswitch_state & BIT(0) >> 8);
+ seq_printf(s, "Wifi locator setting locked: %lu\n",
+ hwswitch_state & BIT(0) >> 15);
+
+ return 0;
+}
+
+static int dell_debugfs_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, dell_debugfs_show, inode->i_private);
+}
+
+static const struct file_operations dell_debugfs_fops = {
+ .owner = THIS_MODULE,
+ .open = dell_debugfs_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+};
+#endif
+
static void dell_update_rfkill(struct work_struct *ignored)
{
if (wifi_rfkill)
@@ -550,6 +623,13 @@ static int __init dell_init(void)
goto fail_filter;
}
+#ifdef CONFIG_DEBUG_FS
+ dell_laptop_dir = debugfs_create_dir("dell_laptop", NULL);
+ if (dell_laptop_dir != NULL)
+ debugfs_create_file("rfkill", 0444, dell_laptop_dir, NULL,
+ &dell_debugfs_fops);
+#endif
+
#ifdef CONFIG_ACPI
/* In the event of an ACPI backlight being available, don't
* register the platform controller.
@@ -609,6 +689,9 @@ fail_platform_driver:
static void __exit dell_exit(void)
{
+#ifdef CONFIG_DEBUG_FS
+ debugfs_remove_recursive(dell_laptop_dir);
+#endif
i8042_remove_filter(dell_laptop_i8042_filter);
cancel_delayed_work_sync(&dell_rfkill_work);
backlight_device_unregister(dell_backlight_device);
--
1.7.0.4
--
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