ideapad: define cfg bits and create sysfs node for cfg

Create /sys/devices/platform/ideapad/cfg for showing cfg value.

Signed-off-by: Ike Panhc <ike.pan@canonical.com>
Signed-off-by: Matthew Garrett <mjg@redhat.com>

diff --git a/Documentation/ABI/testing/sysfs-platform-ideapad-laptop b/Documentation/ABI/testing/sysfs-platform-ideapad-laptop
index 807fca2..ff53183 100644 (file)
--- a/Documentation/ABI/testing/sysfs-platform-ideapad-laptop
+++ b/Documentation/ABI/testing/sysfs-platform-ideapad-laptop
@@ -4,3 +4,20 @@ KernelVersion: 2.6.37
 Contact:       "Ike Panhc <ike.pan@canonical.com>"
 Description:
                Control the power of camera module. 1 means on, 0 means off.
+
+What:          /sys/devices/platform/ideapad/cfg
+Date:          Jun 2011
+KernelVersion: 3.1
+Contact:       "Ike Panhc <ike.pan@canonical.com>"
+Description:
+               Ideapad capability bits.
+               Bit 8-10: 1 - Intel graphic only
+                         2 - ATI graphic only
+                         3 - Nvidia graphic only
+                         4 - Intel and ATI graphic
+                         5 - Intel and Nvidia graphic
+               Bit 16: Bluetooth exist (1 for exist)
+               Bit 17: 3G exist (1 for exist)
+               Bit 18: Wifi exist (1 for exist)
+               Bit 19: Camera exist (1 for exist)
+

diff --git a/drivers/platform/x86/ideapad-laptop.c b/drivers/platform/x86/ideapad-laptop.c
index bfdda33..42b9ba7 100644 (file)
--- a/drivers/platform/x86/ideapad-laptop.c
+++ b/drivers/platform/x86/ideapad-laptop.c
@@ -35,10 +35,15 @@
 
 #define IDEAPAD_RFKILL_DEV_NUM (3)
 
+#define CFG_BT_BIT     (16)
+#define CFG_3G_BIT     (17)
+#define CFG_WIFI_BIT   (18)
+
 struct ideapad_private {
        struct rfkill *rfk[IDEAPAD_RFKILL_DEV_NUM];
        struct platform_device *platform_device;
        struct input_dev *inputdev;
+       unsigned long cfg;
 };
 
 static acpi_handle ideapad_handle;
@@ -155,7 +160,7 @@ static int write_ec_cmd(acpi_handle handle, int cmd, unsigned long data)
 }
 
 /*
- * camera power
+ * sysfs
  */
 static ssize_t show_ideapad_cam(struct device *dev,
                                struct device_attribute *attr,
@@ -186,6 +191,27 @@ static ssize_t store_ideapad_cam(struct device *dev,
 
 static DEVICE_ATTR(camera_power, 0644, show_ideapad_cam, store_ideapad_cam);
 
+static ssize_t show_ideapad_cfg(struct device *dev,
+                               struct device_attribute *attr,
+                               char *buf)
+{
+       struct ideapad_private *priv = dev_get_drvdata(dev);
+
+       return sprintf(buf, "0x%.8lX\n", priv->cfg);
+}
+
+static DEVICE_ATTR(cfg, 0444, show_ideapad_cfg, NULL);
+
+static struct attribute *ideapad_attributes[] = {
+       &dev_attr_camera_power.attr,
+       &dev_attr_cfg.attr,
+       NULL
+};
+
+static struct attribute_group ideapad_attribute_group = {
+       .attrs = ideapad_attributes
+};
+
 /*
  * Rfkill
  */
@@ -197,9 +223,9 @@ struct ideapad_rfk_data {
 };
 
 const struct ideapad_rfk_data ideapad_rfk_data[] = {
-       { "ideapad_wlan",       18, 0x15, RFKILL_TYPE_WLAN },
-       { "ideapad_bluetooth",  16, 0x17, RFKILL_TYPE_BLUETOOTH },
-       { "ideapad_3g",         17, 0x20, RFKILL_TYPE_WWAN },
+       { "ideapad_wlan",      CFG_WIFI_BIT, 0x15, RFKILL_TYPE_WLAN },
+       { "ideapad_bluetooth", CFG_BT_BIT,   0x17, RFKILL_TYPE_BLUETOOTH },
+       { "ideapad_3g",        CFG_3G_BIT,   0x20, RFKILL_TYPE_WWAN },
 };
 
 static int ideapad_rfk_set(void *data, bool blocked)
@@ -280,15 +306,6 @@ static void __devexit ideapad_unregister_rfkill(struct acpi_device *adevice,
 /*
  * Platform device
  */
-static struct attribute *ideapad_attributes[] = {
-       &dev_attr_camera_power.attr,
-       NULL
-};
-
-static struct attribute_group ideapad_attribute_group = {
-       .attrs = ideapad_attributes
-};
-
 static int __devinit ideapad_platform_init(struct ideapad_private *priv)
 {
        int result;
@@ -393,10 +410,11 @@ MODULE_DEVICE_TABLE(acpi, ideapad_device_ids);
 
 static int __devinit ideapad_acpi_add(struct acpi_device *adevice)
 {
-       int ret, i, cfg;
+       int ret, i;
+       unsigned long cfg;
        struct ideapad_private *priv;
 
-       if (read_method_int(adevice->handle, "_CFG", &cfg))
+       if (read_method_int(adevice->handle, "_CFG", (int *)&cfg))
                return -ENODEV;
 
        priv = kzalloc(sizeof(*priv), GFP_KERNEL);
@@ -404,6 +422,7 @@ static int __devinit ideapad_acpi_add(struct acpi_device *adevice)
                return -ENOMEM;
        dev_set_drvdata(&adevice->dev, priv);
        ideapad_handle = adevice->handle;
+       priv->cfg = cfg;
 
        ret = ideapad_platform_init(priv);
        if (ret)
@@ -414,7 +433,7 @@ static int __devinit ideapad_acpi_add(struct acpi_device *adevice)
                goto input_failed;
 
        for (i = 0; i < IDEAPAD_RFKILL_DEV_NUM; i++) {
-               if (test_bit(ideapad_rfk_data[i].cfgbit, (unsigned long *)&cfg))
+               if (test_bit(ideapad_rfk_data[i].cfgbit, &cfg))
                        ideapad_register_rfkill(adevice, i);
                else
                        priv->rfk[i] = NULL;