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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@canonical.com> Signed-off-by: Matthew Garrett <mjg@redhat.com>
This commit is contained in:
Ike Panhc
Matthew Garrett
parent
f43d9ec060
commit
773e3206e6
19
Documentation/ABI/testing/debugfs-ideapad
Normal file
19
Documentation/ABI/testing/debugfs-ideapad
Normal file
@ -0,0 +1,19 @@
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What: /sys/kernel/debug/ideapad/cfg
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Date: Sep 2011
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KernelVersion: 3.2
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Contact: Ike Panhc <ike.pan@canonical.com>
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Description:
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cfg shows the return value of _CFG method in VPC2004 device. It tells machine
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capability and what graphic component within the machine.
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What: /sys/kernel/debug/ideapad/status
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Date: Sep 2011
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KernelVersion: 3.2
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Contact: Ike Panhc <ike.pan@canonical.com>
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Description:
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status shows infos we can read and tells its meaning and value.
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@ -34,6 +34,8 @@
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#include <linux/input/sparse-keymap.h>
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#include <linux/backlight.h>
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#include <linux/fb.h>
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#include <linux/debugfs.h>
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#include <linux/seq_file.h>
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#define IDEAPAD_RFKILL_DEV_NUM (3)
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@ -71,10 +73,12 @@ struct ideapad_private {
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struct platform_device *platform_device;
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struct input_dev *inputdev;
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struct backlight_device *blightdev;
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struct dentry *debug;
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unsigned long cfg;
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};
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static acpi_handle ideapad_handle;
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static struct ideapad_private *ideapad_priv;
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static bool no_bt_rfkill;
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module_param(no_bt_rfkill, bool, 0444);
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MODULE_PARM_DESC(no_bt_rfkill, "No rfkill for bluetooth.");
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@ -187,6 +191,146 @@ static int write_ec_cmd(acpi_handle handle, int cmd, unsigned long data)
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return -1;
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}
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/*
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* debugfs
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*/
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#define DEBUGFS_EVENT_LEN (4096)
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static int debugfs_status_show(struct seq_file *s, void *data)
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{
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unsigned long value;
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if (!read_ec_data(ideapad_handle, VPCCMD_R_BL_MAX, &value))
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seq_printf(s, "Backlight max:\t%lu\n", value);
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if (!read_ec_data(ideapad_handle, VPCCMD_R_BL, &value))
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seq_printf(s, "Backlight now:\t%lu\n", value);
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if (!read_ec_data(ideapad_handle, VPCCMD_R_BL_POWER, &value))
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seq_printf(s, "BL power value:\t%s\n", value ? "On" : "Off");
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seq_printf(s, "=====================\n");
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if (!read_ec_data(ideapad_handle, VPCCMD_R_RF, &value))
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seq_printf(s, "Radio status:\t%s(%lu)\n",
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value ? "On" : "Off", value);
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if (!read_ec_data(ideapad_handle, VPCCMD_R_WIFI, &value))
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seq_printf(s, "Wifi status:\t%s(%lu)\n",
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value ? "On" : "Off", value);
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if (!read_ec_data(ideapad_handle, VPCCMD_R_BT, &value))
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seq_printf(s, "BT status:\t%s(%lu)\n",
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value ? "On" : "Off", value);
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if (!read_ec_data(ideapad_handle, VPCCMD_R_3G, &value))
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seq_printf(s, "3G status:\t%s(%lu)\n",
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value ? "On" : "Off", value);
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seq_printf(s, "=====================\n");
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if (!read_ec_data(ideapad_handle, VPCCMD_R_TOUCHPAD, &value))
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seq_printf(s, "Touchpad status:%s(%lu)\n",
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value ? "On" : "Off", value);
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if (!read_ec_data(ideapad_handle, VPCCMD_R_CAMERA, &value))
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seq_printf(s, "Camera status:\t%s(%lu)\n",
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value ? "On" : "Off", value);
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return 0;
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}
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static int debugfs_status_open(struct inode *inode, struct file *file)
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{
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return single_open(file, debugfs_status_show, NULL);
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}
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static const struct file_operations debugfs_status_fops = {
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.owner = THIS_MODULE,
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.open = debugfs_status_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 int debugfs_cfg_show(struct seq_file *s, void *data)
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{
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if (!ideapad_priv) {
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seq_printf(s, "cfg: N/A\n");
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} else {
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seq_printf(s, "cfg: 0x%.8lX\n\nCapability: ",
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ideapad_priv->cfg);
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if (test_bit(CFG_BT_BIT, &ideapad_priv->cfg))
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seq_printf(s, "Bluetooth ");
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if (test_bit(CFG_3G_BIT, &ideapad_priv->cfg))
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seq_printf(s, "3G ");
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if (test_bit(CFG_WIFI_BIT, &ideapad_priv->cfg))
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seq_printf(s, "Wireless ");
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if (test_bit(CFG_CAMERA_BIT, &ideapad_priv->cfg))
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seq_printf(s, "Camera ");
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seq_printf(s, "\nGraphic: ");
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switch ((ideapad_priv->cfg)&0x700) {
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case 0x100:
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seq_printf(s, "Intel");
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break;
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case 0x200:
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seq_printf(s, "ATI");
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break;
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case 0x300:
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seq_printf(s, "Nvidia");
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break;
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case 0x400:
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seq_printf(s, "Intel and ATI");
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break;
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case 0x500:
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seq_printf(s, "Intel and Nvidia");
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break;
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}
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seq_printf(s, "\n");
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}
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return 0;
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}
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static int debugfs_cfg_open(struct inode *inode, struct file *file)
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{
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return single_open(file, debugfs_cfg_show, NULL);
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}
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static const struct file_operations debugfs_cfg_fops = {
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.owner = THIS_MODULE,
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.open = debugfs_cfg_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 int __devinit ideapad_debugfs_init(struct ideapad_private *priv)
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{
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struct dentry *node;
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priv->debug = debugfs_create_dir("ideapad", NULL);
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if (priv->debug == NULL) {
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pr_err("failed to create debugfs directory");
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goto errout;
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}
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node = debugfs_create_file("cfg", S_IRUGO, priv->debug, NULL,
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&debugfs_cfg_fops);
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if (!node) {
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pr_err("failed to create cfg in debugfs");
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goto errout;
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}
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node = debugfs_create_file("status", S_IRUGO, priv->debug, NULL,
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&debugfs_status_fops);
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if (!node) {
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pr_err("failed to create event in debugfs");
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goto errout;
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}
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return 0;
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errout:
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return -ENOMEM;
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}
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static void ideapad_debugfs_exit(struct ideapad_private *priv)
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{
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debugfs_remove_recursive(priv->debug);
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priv->debug = NULL;
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}
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/*
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* sysfs
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*/
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@ -573,6 +717,7 @@ static int __devinit ideapad_acpi_add(struct acpi_device *adevice)
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if (!priv)
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return -ENOMEM;
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dev_set_drvdata(&adevice->dev, priv);
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ideapad_priv = priv;
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ideapad_handle = adevice->handle;
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priv->cfg = cfg;
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@ -580,6 +725,10 @@ static int __devinit ideapad_acpi_add(struct acpi_device *adevice)
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if (ret)
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goto platform_failed;
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ret = ideapad_debugfs_init(priv);
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if (ret)
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goto debugfs_failed;
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ret = ideapad_input_init(priv);
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if (ret)
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goto input_failed;
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@ -605,6 +754,8 @@ backlight_failed:
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ideapad_unregister_rfkill(adevice, i);
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ideapad_input_exit(priv);
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input_failed:
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ideapad_debugfs_exit(priv);
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debugfs_failed:
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ideapad_platform_exit(priv);
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platform_failed:
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kfree(priv);
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@ -620,6 +771,7 @@ static int __devexit ideapad_acpi_remove(struct acpi_device *adevice, int type)
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for (i = 0; i < IDEAPAD_RFKILL_DEV_NUM; i++)
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ideapad_unregister_rfkill(adevice, i);
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ideapad_input_exit(priv);
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ideapad_debugfs_exit(priv);
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ideapad_platform_exit(priv);
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dev_set_drvdata(&adevice->dev, NULL);
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kfree(priv);
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