This device is present on Iconia Tab W500.
Signed-off-by: Marek Vasut <[email protected]>
Cc: joeyli <[email protected]>
---
drivers/platform/x86/acer-wmi.c | 110 +++++++++++++++++++++++++++++++++++++++
1 file changed, 110 insertions(+)
diff --git a/drivers/platform/x86/acer-wmi.c b/drivers/platform/x86/acer-wmi.c
index c1a3fd8..2df0673 100644
--- a/drivers/platform/x86/acer-wmi.c
+++ b/drivers/platform/x86/acer-wmi.c
@@ -95,6 +95,7 @@ MODULE_ALIAS("wmi:676AA15E-6A47-4D9F-A2CC-1E6D18D14026");
enum acer_wmi_event_ids {
WMID_HOTKEY_EVENT = 0x1,
+ WMID_ACCEL_EVENT = 0x5,
};
static const struct key_entry acer_wmi_keymap[] = {
@@ -130,6 +131,7 @@ static const struct key_entry acer_wmi_keymap[] = {
};
static struct input_dev *acer_wmi_input_dev;
+static struct input_dev *acer_wmi_accel_dev;
struct event_return_value {
u8 function;
@@ -145,6 +147,7 @@ struct event_return_value {
#define ACER_WMID3_GDS_THREEG (1<<6) /* 3G */
#define ACER_WMID3_GDS_WIMAX (1<<7) /* WiMAX */
#define ACER_WMID3_GDS_BLUETOOTH (1<<11) /* BT */
+#define ACER_WMID3_GDS_ACCEL (1<<2) /* Accelerometer */
struct lm_input_params {
u8 function_num; /* Function Number */
@@ -200,6 +203,7 @@ struct hotkey_function_type_aa {
#define ACER_CAP_BLUETOOTH (1<<2)
#define ACER_CAP_BRIGHTNESS (1<<3)
#define ACER_CAP_THREEG (1<<4)
+#define ACER_CAP_ACCEL (1<<5)
#define ACER_CAP_ANY (0xFFFFFFFF)
/*
@@ -1150,6 +1154,8 @@ static void type_aa_dmi_decode(const struct dmi_header
*header, void *dummy)
interface->capability |= ACER_CAP_THREEG;
if (type_aa->commun_func_bitmap & ACER_WMID3_GDS_BLUETOOTH)
interface->capability |= ACER_CAP_BLUETOOTH;
+ if (type_aa->others_func_bitmap & ACER_WMID3_GDS_ACCEL)
+ interface->capability |= ACER_CAP_ACCEL;
commun_fn_key_number = type_aa->commun_fn_key_number;
}
@@ -1375,6 +1381,61 @@ static void acer_backlight_exit(void)
}
/*
+ * Accelerometer device
+ */
+#define ACER_GSENSOR_HANDLE "\\_SB.PCI0.LPC0.SENR"
+#define ACER_GSENSOR_INIT "\\_SB.PCI0.LPC0.SENR._INI"
+#define ACER_GSENSOR_RDVL "\\_SB.PCI0.LPC0.SENR.RDVL"
+static int __devinit acer_gsensor_open(struct input_dev *input)
+{
+ acpi_handle handle;
+ acpi_status status;
+ struct acpi_buffer output;
+ union acpi_object out_obj;
+
+ status = acpi_get_handle(NULL, ACER_GSENSOR_HANDLE, &handle);
+ if (ACPI_FAILURE(status))
+ return -1;
+
+ output.length = sizeof(out_obj);
+ output.pointer = &out_obj;
+ status = acpi_evaluate_object(NULL, ACER_GSENSOR_INIT, NULL, &output);
+ if (ACPI_FAILURE(status))
+ return -1;
+
+ return 0;
+}
+
+static int acer_gsensor_event(void)
+{
+ acpi_status status;
+ struct acpi_buffer output;
+ union acpi_object out_obj[5];
+
+ if (!has_cap(ACER_CAP_ACCEL))
+ return -1;
+
+ output.length = sizeof(out_obj);
+ output.pointer = out_obj;
+
+ status = acpi_evaluate_object(NULL, ACER_GSENSOR_RDVL, NULL, &output);
+ if (ACPI_FAILURE(status))
+ return -1;
+
+ if (out_obj->package.count != 4)
+ return -1;
+
+ input_report_abs(acer_wmi_accel_dev, ABS_X,
+ (s16)out_obj->package.elements[0].integer.value);
+ input_report_abs(acer_wmi_accel_dev, ABS_Y,
+ (s16)out_obj->package.elements[1].integer.value);
+ input_report_abs(acer_wmi_accel_dev, ABS_Z,
+ (s16)out_obj->package.elements[2].integer.value);
+ input_sync(acer_wmi_accel_dev);
+ return 0;
+}
+
+/*
* Rfkill devices
*/
static void acer_rfkill_update(struct work_struct *ignored);
@@ -1649,6 +1710,9 @@ static void acer_wmi_notify(u32 value, void *context)
1, true);
}
break;
+ case WMID_ACCEL_EVENT:
+ acer_gsensor_event();
+ break;
default:
pr_warn("Unknown function number - %d - %d\n",
return_value.function, return_value.key_num);
@@ -1734,6 +1798,41 @@ static int acer_wmi_enable_lm(void)
return status;
}
+static int __init acer_wmi_accel_setup(void)
+{
+ int err;
+
+ acer_wmi_accel_dev = input_allocate_device();
+ if (!acer_wmi_accel_dev)
+ return -ENOMEM;
+
+ acer_wmi_accel_dev->open = acer_gsensor_open;
+
+ acer_wmi_accel_dev->name = "Acer BMA150 accelerometer";
+ acer_wmi_accel_dev->phys = "wmi/input1";
+ acer_wmi_accel_dev->id.bustype = BUS_HOST;
+ acer_wmi_accel_dev->evbit[0] = BIT_MASK(EV_ABS);
+ input_set_abs_params(acer_wmi_accel_dev, ABS_X, -16384, 16384, 0, 0);
+ input_set_abs_params(acer_wmi_accel_dev, ABS_Y, -16384, 16384, 0, 0);
+ input_set_abs_params(acer_wmi_accel_dev, ABS_Z, -16384, 16384, 0, 0);
+
+ err = input_register_device(acer_wmi_accel_dev);
+ if (err)
+ goto err_free_dev;
+
+ return 0;
+
+err_free_dev:
+ input_free_device(acer_wmi_accel_dev);
+ return err;
+}
+
+static void acer_wmi_accel_destroy(void)
+{
+ input_unregister_device(acer_wmi_accel_dev);
+ input_free_device(acer_wmi_accel_dev);
+}
+
static int __init acer_wmi_input_setup(void)
{
acpi_status status;
@@ -2066,6 +2165,12 @@ static int __init acer_wmi_init(void)
return err;
}
+ if (has_cap(ACER_CAP_ACCEL)) {
+ err = acer_wmi_accel_setup();
+ if (err)
+ goto error_platform_register;
+ }
+
err = platform_driver_register(&acer_platform_driver);
if (err) {
pr_err("Unable to register platform driver\n");
@@ -2109,6 +2214,8 @@ error_device_alloc:
error_platform_register:
if (wmi_has_guid(ACERWMID_EVENT_GUID))
acer_wmi_input_destroy();
+ if (has_cap(ACER_CAP_ACCEL))
+ acer_wmi_accel_destroy();
return err;
}
@@ -2118,6 +2225,9 @@ static void __exit acer_wmi_exit(void)
if (wmi_has_guid(ACERWMID_EVENT_GUID))
acer_wmi_input_destroy();
+ if (has_cap(ACER_CAP_ACCEL))
+ acer_wmi_accel_destroy();
+
remove_sysfs(acer_platform_device);
remove_debugfs();
platform_device_unregister(acer_platform_device);
--
1.7.10
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