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Message-Id: <1316422205-13908-1-git-send-email-ike.pan@canonical.com>
Date: Mon, 19 Sep 2011 16:50:05 +0800
From: Ike Panhc <ike.pan@...onical.com>
To: platform-driver-x86@...r.kernel.org, linux-kernel@...r.kernel.org
Cc: Matthew Garrett <mjg@...hat.com>
Subject: [PATCH 4/5] ideapad: add debugfs support
Add two nodes in debugfs which shows cfg value and its meaning,
and status info read from VPC2004.
Signed-off-by: Ike Panhc <ike.pan@...onical.com>
---
Documentation/ABI/testing/debugfs-ideapad | 19 ++++
drivers/platform/x86/ideapad-laptop.c | 149 +++++++++++++++++++++++++++++
2 files changed, 168 insertions(+), 0 deletions(-)
create mode 100644 Documentation/ABI/testing/debugfs-ideapad
diff --git a/Documentation/ABI/testing/debugfs-ideapad b/Documentation/ABI/testing/debugfs-ideapad
new file mode 100644
index 0000000..7079c0b
--- /dev/null
+++ b/Documentation/ABI/testing/debugfs-ideapad
@@ -0,0 +1,19 @@
+What: /sys/kernel/debug/ideapad/cfg
+Date: Sep 2011
+KernelVersion: 3.2
+Contact: Ike Panhc <ike.pan@...onical.com>
+Description:
+
+cfg shows the return value of _CFG method in VPC2004 device. It tells machine
+capability and what graphic component within the machine.
+
+
+What: /sys/kernel/debug/ideapad/status
+Date: Sep 2011
+KernelVersion: 3.2
+Contact: Ike Panhc <ike.pan@...onical.com>
+Description:
+
+status shows infos we can read and tells its meaning and value.
+
+
diff --git a/drivers/platform/x86/ideapad-laptop.c b/drivers/platform/x86/ideapad-laptop.c
index 39a72a8..1a18cc2 100644
--- a/drivers/platform/x86/ideapad-laptop.c
+++ b/drivers/platform/x86/ideapad-laptop.c
@@ -34,6 +34,8 @@
#include <linux/input/sparse-keymap.h>
#include <linux/backlight.h>
#include <linux/fb.h>
+#include <linux/debugfs.h>
+#include <linux/seq_file.h>
#define IDEAPAD_RFKILL_DEV_NUM (3)
@@ -71,6 +73,7 @@ struct ideapad_private {
struct platform_device *platform_device;
struct input_dev *inputdev;
struct backlight_device *blightdev;
+ struct dentry *debug;
unsigned long cfg;
};
@@ -188,6 +191,149 @@ static int write_ec_cmd(acpi_handle handle, int cmd, unsigned long data)
}
/*
+ * debugfs
+ */
+static int debugfs_status_show(struct seq_file *s, void *data)
+{
+ unsigned long value;
+
+ if (!read_ec_data(ideapad_handle, VPCCMD_R_BL_MAX, &value))
+ seq_printf(s, "Backlight max:\t%lu\n", value);
+ if (!read_ec_data(ideapad_handle, VPCCMD_R_BL, &value))
+ seq_printf(s, "Backlight now:\t%lu\n", value);
+ if (!read_ec_data(ideapad_handle, VPCCMD_R_BL_POWER, &value))
+ seq_printf(s, "BL power value:\t%s\n", value ? "On" : "Off");
+ seq_printf(s, "=====================\n");
+
+ if (!read_ec_data(ideapad_handle, VPCCMD_R_RF, &value))
+ seq_printf(s, "Radio status:\t%s(%lu)\n",
+ value ? "On" : "Off", value);
+ if (!read_ec_data(ideapad_handle, VPCCMD_R_WIFI, &value))
+ seq_printf(s, "Wifi status:\t%s(%lu)\n",
+ value ? "On" : "Off", value);
+ if (!read_ec_data(ideapad_handle, VPCCMD_R_BT, &value))
+ seq_printf(s, "BT status:\t%s(%lu)\n",
+ value ? "On" : "Off", value);
+ if (!read_ec_data(ideapad_handle, VPCCMD_R_3G, &value))
+ seq_printf(s, "3G status:\t%s(%lu)\n",
+ value ? "On" : "Off", value);
+ seq_printf(s, "=====================\n");
+
+ if (!read_ec_data(ideapad_handle, VPCCMD_R_TOUCHPAD, &value))
+ seq_printf(s, "Touchpad status:%s(%lu)\n",
+ value ? "On" : "Off", value);
+ if (!read_ec_data(ideapad_handle, VPCCMD_R_CAMERA, &value))
+ seq_printf(s, "Camera status:\t%s(%lu)\n",
+ value ? "On" : "Off", value);
+
+ return 0;
+}
+
+static int debugfs_status_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, debugfs_status_show, NULL);
+}
+
+static const struct file_operations debugfs_status_fops = {
+ .owner = THIS_MODULE,
+ .open = debugfs_status_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+};
+
+static int debugfs_cfg_show(struct seq_file *s, void *data)
+{
+ struct ideapad_private *priv = s->private;
+
+ seq_printf(s, "cfg: 0x%.8lX\n\nCapability: ", priv->cfg);
+ if (test_bit(CFG_BT_BIT, &priv->cfg))
+ seq_printf(s, "Bluetooth ");
+ if (test_bit(CFG_3G_BIT, &priv->cfg))
+ seq_printf(s, "3G ");
+ if (test_bit(CFG_WIFI_BIT, &priv->cfg))
+ seq_printf(s, "Wireless ");
+ if (test_bit(CFG_CAMERA_BIT, &priv->cfg))
+ seq_printf(s, "Camera ");
+ seq_printf(s, "\nGraphic: ");
+ switch ((priv->cfg)&0x700) {
+ case 0x100:
+ seq_printf(s, "Intel");
+ break;
+ case 0x200:
+ seq_printf(s, "ATI");
+ break;
+ case 0x300:
+ seq_printf(s, "Nvidia");
+ break;
+ case 0x400:
+ seq_printf(s, "Intel and ATI");
+ break;
+ case 0x500:
+ seq_printf(s, "Intel and Nvidia");
+ break;
+ default:
+ seq_printf(s, "Unknown");
+ }
+ seq_printf(s, "\n");
+
+ return 0;
+}
+
+static int debugfs_cfg_open(struct inode *inode, struct file *file)
+{
+ struct ideapad_private *priv = inode->i_private;
+
+ return single_open(file, debugfs_cfg_show, priv);
+}
+
+static const struct file_operations debugfs_cfg_fops = {
+ .owner = THIS_MODULE,
+ .open = debugfs_cfg_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+};
+
+static void ideapad_debugfs_exit(struct ideapad_private *priv)
+{
+ debugfs_remove_recursive(priv->debug);
+ priv->debug = NULL;
+}
+
+static void __devinit ideapad_debugfs_init(struct ideapad_private *priv)
+{
+ struct dentry *node;
+
+ priv->debug = debugfs_create_dir("ideapad", NULL);
+ if (IS_ERR_OR_NULL(priv->debug)) {
+ priv->debug = NULL;
+ pr_err("failed to create debugfs directory");
+ return;
+ }
+
+ node = debugfs_create_file("cfg", S_IRUGO, priv->debug, priv,
+ &debugfs_cfg_fops);
+ if (IS_ERR_OR_NULL(priv->debug)) {
+ pr_err("failed to create cfg in debugfs");
+ goto errout;
+ }
+
+ node = debugfs_create_file("status", S_IRUGO, priv->debug, NULL,
+ &debugfs_status_fops);
+ if (IS_ERR_OR_NULL(priv->debug)) {
+ pr_err("failed to create event in debugfs");
+ goto errout;
+ }
+
+ return;
+
+errout:
+ ideapad_debugfs_exit(priv);
+ return;
+}
+
+/*
* sysfs
*/
static ssize_t show_ideapad_cam(struct device *dev,
@@ -598,6 +744,8 @@ static int __devinit ideapad_acpi_add(struct acpi_device *adevice)
goto backlight_failed;
}
+ ideapad_debugfs_init(priv);
+
return 0;
backlight_failed:
@@ -620,6 +768,7 @@ static int __devexit ideapad_acpi_remove(struct acpi_device *adevice, int type)
for (i = 0; i < IDEAPAD_RFKILL_DEV_NUM; i++)
ideapad_unregister_rfkill(adevice, i);
ideapad_input_exit(priv);
+ ideapad_debugfs_exit(priv);
ideapad_platform_exit(priv);
dev_set_drvdata(&adevice->dev, NULL);
kfree(priv);
--
1.7.5.4
--
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