The RFKILL device shares the same ACPI device used for backlight. So, it
required a new struct sharing both a backlight_device and a rfkill
device.
Signed-off-by: Thadeu Lima de Souza Cascardo <cascardo@xxxxxxxxxxxxxx>
---
drivers/platform/x86/classmate-laptop.c | 170 +++++++++++++++++++++++++++----
1 files changed, 148 insertions(+), 22 deletions(-)
diff --git a/drivers/platform/x86/classmate-laptop.c b/drivers/platform/x86/classmate-laptop.c
index 7f9e5dd..3bf399f 100644
--- a/drivers/platform/x86/classmate-laptop.c
+++ b/drivers/platform/x86/classmate-laptop.c
@@ -24,6 +24,7 @@
#include <acpi/acpi_drivers.h>
#include <linux/backlight.h>
#include <linux/input.h>
+#include <linux/rfkill.h>
MODULE_LICENSE("GPL");
@@ -37,7 +38,7 @@ struct cmpc_accel {
#define CMPC_ACCEL_HID "ACCE0000"
#define CMPC_TABLET_HID "TBLT0000"
-#define CMPC_BL_HID "IPML200"
+#define CMPC_IPML_HID "IPML200"
#define CMPC_KEYS_HID "FnBT0000"
/*
@@ -461,43 +462,168 @@ static const struct backlight_ops cmpc_bl_ops = {
.update_status = cmpc_bl_update_status
};
-static int cmpc_bl_add(struct acpi_device *acpi)
+/*
+ * RFKILL code.
+ */
+
+static acpi_status cmpc_get_rfkill_wlan(acpi_handle handle,
+ unsigned long long *value)
{
- struct backlight_properties props;
+ union acpi_object param;
+ struct acpi_object_list input;
+ unsigned long long output;
+ acpi_status status;
+
+ param.type = ACPI_TYPE_INTEGER;
+ param.integer.value = 0xC1;
+ input.count = 1;
+ input.pointer = ¶m;
+ status = acpi_evaluate_integer(handle, "GRDI", &input, &output);
+ if (ACPI_SUCCESS(status))
+ *value = output;
+ return status;
+}
+
+static acpi_status cmpc_set_rfkill_wlan(acpi_handle handle,
+ unsigned long long value)
+{
+ union acpi_object param[2];
+ struct acpi_object_list input;
+ acpi_status status;
+ unsigned long long output;
+
+ param[0].type = ACPI_TYPE_INTEGER;
+ param[0].integer.value = 0xC1;
+ param[1].type = ACPI_TYPE_INTEGER;
+ param[1].integer.value = value;
+ input.count = 2;
+ input.pointer = param;
+ status = acpi_evaluate_integer(handle, "GWRI", &input, &output);
+ return status;
+}
+
+static void cmpc_rfkill_query(struct rfkill *rfkill, void *data)
+{
+ acpi_status status;
+ acpi_handle handle;
+ unsigned long long state;
+ bool blocked;
+
+ handle = data;
+ status = cmpc_get_rfkill_wlan(handle, &state);
+ if (ACPI_SUCCESS(status)) {
+ blocked = state & 1 ? false : true;
+ rfkill_set_sw_state(rfkill, blocked);
+ }
+}
+
+static int cmpc_rfkill_block(void *data, bool blocked)
+{
+ acpi_status status;
+ acpi_handle handle;
+ unsigned long long state;
+
+ handle = data;
+ status = cmpc_get_rfkill_wlan(handle, &state);
+ if (ACPI_FAILURE(status))
+ return -ENODEV;
+ if (blocked)
+ state &= ~1;
+ else
+ state |= 1;
+ status = cmpc_set_rfkill_wlan(handle, state);
+ if (ACPI_FAILURE(status))
+ return -ENODEV;
+ return 0;
+}
+
+static const struct rfkill_ops cmpc_rfkill_ops = {
+ .query = cmpc_rfkill_query,
+ .set_block = cmpc_rfkill_block,
+};
+
+/*
+ * Common backlight and rfkill code.
+ */
+
+struct ipml200_dev {
struct backlight_device *bd;
+ struct rfkill *rf;
+};
+
+static int cmpc_ipml_add(struct acpi_device *acpi)
+{
+ int retval;
+ struct ipml200_dev *ipml;
+ struct backlight_properties props;
+
+ ipml = kmalloc(sizeof(*ipml), GFP_KERNEL);
+ if (ipml == NULL)
+ return -ENOMEM;
memset(&props, 0, sizeof(struct backlight_properties));
props.max_brightness = 7;
- bd = backlight_device_register("cmpc_bl", &acpi->dev, acpi->handle,
- &cmpc_bl_ops, &props);
- if (IS_ERR(bd))
- return PTR_ERR(bd);
- dev_set_drvdata(&acpi->dev, bd);
+ ipml->bd = backlight_device_register("cmpc_bl", &acpi->dev,
+ acpi->handle, &cmpc_bl_ops,
+ &props);
+ if (IS_ERR(ipml->bd)) {
+ retval = PTR_ERR(ipml->bd);
+ goto out_bd;
+ }
+
+ ipml->rf = rfkill_alloc("cmpc_rfkill", &acpi->dev, RFKILL_TYPE_WLAN,
+ &cmpc_rfkill_ops, acpi->handle);
+ /* rfkill_alloc may fail if RFKILL is disabled. We should still work
+ * anyway. */
+ if (!IS_ERR(ipml->rf)) {
+ retval = rfkill_register(ipml->rf);
+ if (retval) {
+ rfkill_destroy(ipml->rf);
+ ipml->rf = NULL;
+ }
+ } else {
+ ipml->rf = NULL;
+ }
+
+ dev_set_drvdata(&acpi->dev, ipml);
return 0;
+
+out_bd:
+ kfree(ipml);
+ return retval;
}
-static int cmpc_bl_remove(struct acpi_device *acpi, int type)
+static int cmpc_ipml_remove(struct acpi_device *acpi, int type)
{
- struct backlight_device *bd;
+ struct ipml200_dev *ipml;
+
+ ipml = dev_get_drvdata(&acpi->dev);
+
+ backlight_device_unregister(ipml->bd);
+
+ if (ipml->rf) {
+ rfkill_unregister(ipml->rf);
+ rfkill_destroy(ipml->rf);
+ }
+
+ kfree(ipml);
- bd = dev_get_drvdata(&acpi->dev);
- backlight_device_unregister(bd);
return 0;
}
-static const struct acpi_device_id cmpc_bl_device_ids[] = {
- {CMPC_BL_HID, 0},
+static const struct acpi_device_id cmpc_ipml_device_ids[] = {
+ {CMPC_IPML_HID, 0},
{"", 0}
};
-static struct acpi_driver cmpc_bl_acpi_driver = {
+static struct acpi_driver cmpc_ipml_acpi_driver = {
.owner = THIS_MODULE,
.name = "cmpc",
.class = "cmpc",
- .ids = cmpc_bl_device_ids,
+ .ids = cmpc_ipml_device_ids,
.ops = {
- .add = cmpc_bl_add,
- .remove = cmpc_bl_remove
+ .add = cmpc_ipml_add,
+ .remove = cmpc_ipml_remove
}
};
@@ -580,7 +706,7 @@ static int cmpc_init(void)
if (r)
goto failed_keys;
- r = acpi_bus_register_driver(&cmpc_bl_acpi_driver);
+ r = acpi_bus_register_driver(&cmpc_ipml_acpi_driver);
if (r)
goto failed_bl;
@@ -598,7 +724,7 @@ failed_accel:
acpi_bus_unregister_driver(&cmpc_tablet_acpi_driver);
failed_tablet:
- acpi_bus_unregister_driver(&cmpc_bl_acpi_driver);
+ acpi_bus_unregister_driver(&cmpc_ipml_acpi_driver);
failed_bl:
acpi_bus_unregister_driver(&cmpc_keys_acpi_driver);
@@ -611,7 +737,7 @@ static void cmpc_exit(void)
{
acpi_bus_unregister_driver(&cmpc_accel_acpi_driver);
acpi_bus_unregister_driver(&cmpc_tablet_acpi_driver);
- acpi_bus_unregister_driver(&cmpc_bl_acpi_driver);
+ acpi_bus_unregister_driver(&cmpc_ipml_acpi_driver);
acpi_bus_unregister_driver(&cmpc_keys_acpi_driver);
}
@@ -621,7 +747,7 @@ module_exit(cmpc_exit);
static const struct acpi_device_id cmpc_device_ids[] = {
{CMPC_ACCEL_HID, 0},
{CMPC_TABLET_HID, 0},
- {CMPC_BL_HID, 0},
+ {CMPC_IPML_HID, 0},
{CMPC_KEYS_HID, 0},
{"", 0}
};
--
1.6.6.1
--
To unsubscribe from this list: send the line "unsubscribe platform-driver-x86" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
