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Date: Tue, 6 Sep 2011 02:32:52 +0800
From: Ike Panhc <ike.pan@...onical.com>
To: platform-driver-x86@...r.kernel.org, linux-kernel@...r.kernel.org,
linux-doc@...r.kernel.org
Cc: Matthew Garrett <mjg@...hat.com>,
Randy Dunlap <rdunlap@...otime.net>
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 | 152 +++++++++++++++++++++++++++++
2 files changed, 171 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..1c8b506 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)
@@ -71,10 +73,12 @@ struct ideapad_private {
struct platform_device *platform_device;
struct input_dev *inputdev;
struct backlight_device *blightdev;
+ struct dentry *debug;
unsigned long cfg;
};
static acpi_handle ideapad_handle;
+static struct ideapad_private *ideapad_priv;
static bool no_bt_rfkill;
module_param(no_bt_rfkill, bool, 0444);
MODULE_PARM_DESC(no_bt_rfkill, "No rfkill for bluetooth.");
@@ -188,6 +192,146 @@ static int write_ec_cmd(acpi_handle handle, int cmd, unsigned long data)
}
/*
+ * debugfs
+ */
+#define DEBUGFS_EVENT_LEN (4096)
+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)
+{
+ if (!ideapad_priv) {
+ seq_printf(s, "cfg: N/A\n");
+ } else {
+ seq_printf(s, "cfg: 0x%.8lX\n\nCapability: ",
+ ideapad_priv->cfg);
+ if (test_bit(CFG_BT_BIT, &ideapad_priv->cfg))
+ seq_printf(s, "Bluetooth ");
+ if (test_bit(CFG_3G_BIT, &ideapad_priv->cfg))
+ seq_printf(s, "3G ");
+ if (test_bit(CFG_WIFI_BIT, &ideapad_priv->cfg))
+ seq_printf(s, "Wireless ");
+ if (test_bit(CFG_CAMERA_BIT, &ideapad_priv->cfg))
+ seq_printf(s, "Camera ");
+ seq_printf(s, "\nGraphic: ");
+ switch ((ideapad_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;
+ }
+ seq_printf(s, "\n");
+ }
+ return 0;
+}
+
+static int debugfs_cfg_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, debugfs_cfg_show, NULL);
+}
+
+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 int __devinit ideapad_debugfs_init(struct ideapad_private *priv)
+{
+ struct dentry *node;
+
+ priv->debug = debugfs_create_dir("ideapad", NULL);
+ if (priv->debug == NULL) {
+ pr_err("failed to create debugfs directory");
+ goto errout;
+ }
+
+ node = debugfs_create_file("cfg", S_IRUGO, priv->debug, NULL,
+ &debugfs_cfg_fops);
+ if (!node) {
+ pr_err("failed to create cfg in debugfs");
+ goto errout;
+ }
+
+ node = debugfs_create_file("status", S_IRUGO, priv->debug, NULL,
+ &debugfs_status_fops);
+ if (!node) {
+ pr_err("failed to create event in debugfs");
+ goto errout;
+ }
+
+ return 0;
+
+errout:
+ return -ENOMEM;
+}
+
+static void ideapad_debugfs_exit(struct ideapad_private *priv)
+{
+ debugfs_remove_recursive(priv->debug);
+ priv->debug = NULL;
+}
+
+/*
* sysfs
*/
static ssize_t show_ideapad_cam(struct device *dev,
@@ -573,6 +717,7 @@ static int __devinit ideapad_acpi_add(struct acpi_device *adevice)
if (!priv)
return -ENOMEM;
dev_set_drvdata(&adevice->dev, priv);
+ ideapad_priv = priv;
ideapad_handle = adevice->handle;
priv->cfg = cfg;
@@ -580,6 +725,10 @@ static int __devinit ideapad_acpi_add(struct acpi_device *adevice)
if (ret)
goto platform_failed;
+ ret = ideapad_debugfs_init(priv);
+ if (ret)
+ goto debugfs_failed;
+
ret = ideapad_input_init(priv);
if (ret)
goto input_failed;
@@ -605,6 +754,8 @@ backlight_failed:
ideapad_unregister_rfkill(adevice, i);
ideapad_input_exit(priv);
input_failed:
+ ideapad_debugfs_exit(priv);
+debugfs_failed:
ideapad_platform_exit(priv);
platform_failed:
kfree(priv);
@@ -620,6 +771,7 @@ 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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