於 五，2012-06-01 於 19:11 +0200，Marek Vasut 提到：
> This device is present on Iconia Tab W500.
>
> Signed-off-by: Marek Vasut <marex@xxxxxxx>
> Cc: joeyli <jlee@xxxxxxxx>
This patch is good to me!
Acked-by: Lee, Chun-Yi <jlee@xxxxxxxx>
Thanks a lot!
Joey Lee
> ---
> drivers/platform/x86/acer-wmi.c | 138 +++++++++++++++++++++++++++++++++++++++
> 1 file changed, 138 insertions(+)
>
> diff --git a/drivers/platform/x86/acer-wmi.c b/drivers/platform/x86/acer-wmi.c
> index c1a3fd8..edb6bad 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;
> @@ -200,6 +202,7 @@ 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)
>
> /*
> @@ -1375,6 +1378,60 @@ static void acer_backlight_exit(void)
> }
>
> /*
> + * Accelerometer device
> + */
> +static acpi_handle gsensor_handle;
> +
> +static int acer_gsensor_init(void)
> +{
> + acpi_status status;
> + struct acpi_buffer output;
> + union acpi_object out_obj;
> +
> + output.length = sizeof(out_obj);
> + output.pointer = &out_obj;
> + status = acpi_evaluate_object(gsensor_handle, "_INI", NULL, &output);
> + if (ACPI_FAILURE(status))
> + return -1;
> +
> + return 0;
> +}
> +
> +static int acer_gsensor_open(struct input_dev *input)
> +{
> + return acer_gsensor_init();
> +}
> +
> +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(gsensor_handle, "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 +1706,9 @@ 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 +1794,74 @@ static int acer_wmi_enable_lm(void)
> return status;
> }
>
> +static acpi_status __init acer_wmi_get_handle_cb(acpi_handle ah, u32 level,
> + void *ctx, void **retval)
> +{
> + *(acpi_handle *)retval = ah;
> + return AE_OK;
> +}
> +
> +static int __init acer_wmi_get_handle(const char *name, const char *prop,
> + acpi_handle *ah)
> +{
> + acpi_status status;
> + acpi_handle handle;
> +
> + BUG_ON(!name || !ah);
> +
> + handle = 0;
> + status = acpi_get_devices(prop, acer_wmi_get_handle_cb,
> + (void *)name, &handle);
> +
> + if (ACPI_SUCCESS(status)) {
> + *ah = handle;
> + return 0;
> + } else {
> + return -ENODEV;
> + }
> +}
> +
> +static int __init acer_wmi_accel_setup(void)
> +{
> + int err;
> +
> + err = acer_wmi_get_handle("SENR", "BST0001", &gsensor_handle);
> + if (err)
> + return err;
> +
> + interface->capability |= ACER_CAP_ACCEL;
> +
> + 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;
> @@ -1889,6 +2017,9 @@ static int acer_platform_resume(struct platform_device *device)
> if (has_cap(ACER_CAP_BRIGHTNESS))
> set_u32(data->brightness, ACER_CAP_BRIGHTNESS);
>
> + if (has_cap(ACER_CAP_ACCEL))
> + acer_gsensor_init();
> +
> return 0;
> }
>
> @@ -2066,6 +2197,8 @@ static int __init acer_wmi_init(void)
> return err;
> }
>
> + acer_wmi_accel_setup();
> +
> err = platform_driver_register(&acer_platform_driver);
> if (err) {
> pr_err("Unable to register platform driver\n");
> @@ -2109,6 +2242,8 @@ 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 +2253,9 @@ 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);
--
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