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ideapad: Stop using global variables 

Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
This commit is contained in:
David Woodhouse 2010-08-11 17:59:35 +01:00
parent 58ac7aa0c3
commit ce326329d7
1 changed files with 58 additions and 34 deletions
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90
drivers/platform/x86/ideapad_acpi.c
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@ -34,13 +34,19 @@
#define IDEAPAD_DEV_3G 3 #define IDEAPAD_DEV_3G 3
#define IDEAPAD_DEV_KILLSW 4 #define IDEAPAD_DEV_KILLSW 4
static struct rfkill *ideapad_rfkill[5]; struct ideapad_private {
struct rfkill *rfk[5];
static const char *ideapad_rfk_names[] = {
"ideapad_camera", "ideapad_wlan", "ideapad_bluetooth", "ideapad_3g", "ideapad_rfkill"
}; };
static const int ideapad_rfk_types[] = {
0, RFKILL_TYPE_WLAN, RFKILL_TYPE_BLUETOOTH, RFKILL_TYPE_WWAN, RFKILL_TYPE_WLAN static struct {
char *name;
int type;
} ideapad_rfk_data[] = {
/* camera has no rfkill */
{ "ideapad_wlan", RFKILL_TYPE_WLAN },
{ "ideapad_bluetooth", RFKILL_TYPE_BLUETOOTH },
{ "ideapad_3g", RFKILL_TYPE_WWAN },
{ "ideapad_killsw", RFKILL_TYPE_WLAN }
}; };
static int ideapad_dev_exists(int device) static int ideapad_dev_exists(int device)
@ -155,48 +161,52 @@ static struct rfkill_ops ideapad_rfk_ops = {
.set_block = ideapad_rfk_set, .set_block = ideapad_rfk_set,
}; };
static void ideapad_sync_rfk_state(void) static void ideapad_sync_rfk_state(struct acpi_device *adevice)
{ {
struct ideapad_private *priv = dev_get_drvdata(&adevice->dev);
int hw_blocked = !ideapad_dev_get_state(IDEAPAD_DEV_KILLSW); int hw_blocked = !ideapad_dev_get_state(IDEAPAD_DEV_KILLSW);
int i; int i;
rfkill_set_hw_state(ideapad_rfkill[IDEAPAD_DEV_KILLSW], hw_blocked); rfkill_set_hw_state(priv->rfk[IDEAPAD_DEV_KILLSW], hw_blocked);
for (i = IDEAPAD_DEV_WLAN; i < IDEAPAD_DEV_KILLSW; i++) for (i = IDEAPAD_DEV_WLAN; i < IDEAPAD_DEV_KILLSW; i++)
if (ideapad_rfkill[i]) if (priv->rfk[i])
rfkill_set_hw_state(ideapad_rfkill[i], hw_blocked); rfkill_set_hw_state(priv->rfk[i], hw_blocked);
if (hw_blocked) if (hw_blocked)
return; return;
for (i = IDEAPAD_DEV_WLAN; i < IDEAPAD_DEV_KILLSW; i++) for (i = IDEAPAD_DEV_WLAN; i < IDEAPAD_DEV_KILLSW; i++)
if (ideapad_rfkill[i]) if (priv->rfk[i])
rfkill_set_sw_state(ideapad_rfkill[i], !ideapad_dev_get_state(i)); rfkill_set_sw_state(priv->rfk[i], !ideapad_dev_get_state(i));
} }
static int ideapad_register_rfkill(struct acpi_device *device, int dev) static int ideapad_register_rfkill(struct acpi_device *adevice, int dev)
{ {
struct ideapad_private *priv = dev_get_drvdata(&adevice->dev);
int ret; int ret;
ideapad_rfkill[dev] = rfkill_alloc(ideapad_rfk_names[dev], &device->dev, priv->rfk[dev] = rfkill_alloc(ideapad_rfk_data[dev-1].name, &adevice->dev,
ideapad_rfk_types[dev], &ideapad_rfk_ops, ideapad_rfk_data[dev-1].type, &ideapad_rfk_ops,
(void *)(long)dev); (void *)(long)dev);
if (!ideapad_rfkill[dev]) if (!priv->rfk[dev])
return -ENOMEM; return -ENOMEM;
ret = rfkill_register(ideapad_rfkill[dev]); ret = rfkill_register(priv->rfk[dev]);
if (ret) { if (ret) {
rfkill_destroy(ideapad_rfkill[dev]); rfkill_destroy(priv->rfk[dev]);
return ret; return ret;
} }
return 0; return 0;
} }
static void ideapad_unregister_rfkill(int dev) static void ideapad_unregister_rfkill(struct acpi_device *adevice, int dev)
{ {
if (!ideapad_rfkill[dev]) struct ideapad_private *priv = dev_get_drvdata(&adevice->dev);
if (!priv->rfk[dev])
return; return;
rfkill_unregister(ideapad_rfkill[dev]); rfkill_unregister(priv->rfk[dev]);
rfkill_destroy(ideapad_rfkill[dev]); rfkill_destroy(priv->rfk[dev]);
} }
static const struct acpi_device_id ideapad_device_ids[] = { static const struct acpi_device_id ideapad_device_ids[] = {
@ -205,10 +215,11 @@ static const struct acpi_device_id ideapad_device_ids[] = {
}; };
MODULE_DEVICE_TABLE(acpi, ideapad_device_ids); MODULE_DEVICE_TABLE(acpi, ideapad_device_ids);
static int ideapad_acpi_add(struct acpi_device *device) static int ideapad_acpi_add(struct acpi_device *adevice)
{ {
int i; int i;
int devs_present[5]; int devs_present[5];
struct ideapad_private *priv;
for (i = IDEAPAD_DEV_CAMERA; i < IDEAPAD_DEV_KILLSW; i++) { for (i = IDEAPAD_DEV_CAMERA; i < IDEAPAD_DEV_KILLSW; i++) {
devs_present[i] = ideapad_dev_exists(i); devs_present[i] = ideapad_dev_exists(i);
@ -219,34 +230,47 @@ static int ideapad_acpi_add(struct acpi_device *device)
/* The hardware switch is always present */ /* The hardware switch is always present */
devs_present[IDEAPAD_DEV_KILLSW] = 1; devs_present[IDEAPAD_DEV_KILLSW] = 1;
priv = kzalloc(sizeof(*priv), GFP_KERNEL);
if (!priv)
return -ENOMEM;
if (devs_present[IDEAPAD_DEV_CAMERA]) { if (devs_present[IDEAPAD_DEV_CAMERA]) {
int ret = device_create_file(&device->dev, &dev_attr_camera_power); int ret = device_create_file(&adevice->dev, &dev_attr_camera_power);
if (ret) if (ret) {
kfree(priv);
return ret; return ret;
} }
}
dev_set_drvdata(&adevice->dev, priv);
for (i = IDEAPAD_DEV_WLAN; i <= IDEAPAD_DEV_KILLSW; i++) { for (i = IDEAPAD_DEV_WLAN; i <= IDEAPAD_DEV_KILLSW; i++) {
if (!devs_present[i]) if (!devs_present[i])
continue; continue;
ideapad_register_rfkill(device, i); ideapad_register_rfkill(adevice, i);
} }
ideapad_sync_rfk_state(); ideapad_sync_rfk_state(adevice);
return 0; return 0;
} }
static int ideapad_acpi_remove(struct acpi_device *device, int type) static int ideapad_acpi_remove(struct acpi_device *adevice, int type)
{ {
struct ideapad_private *priv = dev_get_drvdata(&adevice->dev);
int i; int i;
device_remove_file(&device->dev, &dev_attr_camera_power);
for (i = 0; i < 5; i++) device_remove_file(&adevice->dev, &dev_attr_camera_power);
ideapad_unregister_rfkill(i);
for (i = IDEAPAD_DEV_WLAN; i <= IDEAPAD_DEV_KILLSW; i++)
ideapad_unregister_rfkill(adevice, i);
dev_set_drvdata(&adevice->dev, NULL);
kfree(priv);
return 0; return 0;
} }
static void ideapad_acpi_notify(struct acpi_device *device, u32 event) static void ideapad_acpi_notify(struct acpi_device *adevice, u32 event)
{ {
ideapad_sync_rfk_state(); ideapad_sync_rfk_state(adevice);
} }
static struct acpi_driver ideapad_acpi_driver = { static struct acpi_driver ideapad_acpi_driver = {