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dell-led: use dell_smbios_send_request() for performing SMBIOS calls 

Instead of using the WMI wrapper, dell-led can take advantage of
dell_smbios_send_request() for performing the SMBIOS calls required to
change the state of the microphone LED.

Signed-off-by: Michał Kępień <kernel@kempniu.pl>
Reviewed-by: Pali Rohár <pali.rohar@gmail.com>
Acked-by: Jacek Anaszewski <j.anaszewski@samsung.com>
Signed-off-by: Darren Hart <dvhart@linux.intel.com>
This commit is contained in:
Michał Kępień 2016-01-22 15:27:28 +01:00 committed by Darren Hart
parent cf0d7ea335
commit 0c41a08e13
1 changed files with 6 additions and 59 deletions
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65
drivers/leds/dell-led.c
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@ -43,64 +43,13 @@ MODULE_ALIAS("wmi:" DELL_LED_BIOS_GUID);
#define CMD_LED_OFF 17
#define CMD_LED_BLINK 18
struct app_wmi_args {
u16 class;
u16 selector;
u32 arg1;
u32 arg2;
u32 arg3;
u32 arg4;
u32 res1;
u32 res2;
u32 res3;
u32 res4;
char dummy[92];
};
#define GLOBAL_MIC_MUTE_ENABLE 0x364
#define GLOBAL_MIC_MUTE_DISABLE 0x365
static int dell_wmi_perform_query(struct app_wmi_args *args)
{
struct app_wmi_args *bios_return;
union acpi_object *obj;
struct acpi_buffer input;
struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
acpi_status status;
u32 rc = -EINVAL;
input.length = 128;
input.pointer = args;
status = wmi_evaluate_method(DELL_APP_GUID, 0, 1, &input, &output);
if (!ACPI_SUCCESS(status))
goto err_out0;
obj = output.pointer;
if (!obj)
goto err_out0;
if (obj->type != ACPI_TYPE_BUFFER)
goto err_out1;
bios_return = (struct app_wmi_args *)obj->buffer.pointer;
rc = bios_return->res1;
if (rc)
goto err_out1;
memcpy(args, bios_return, sizeof(struct app_wmi_args));
rc = 0;
err_out1:
kfree(obj);
err_out0:
return rc;
}
static int dell_micmute_led_set(int state)
{
struct calling_interface_buffer *buffer;
struct calling_interface_token *token;
struct app_wmi_args args;
if (!wmi_has_guid(DELL_APP_GUID))
return -ENODEV;
@ -115,13 +64,11 @@ static int dell_micmute_led_set(int state)
if (!token)
return -ENODEV;
memset(&args, 0, sizeof(struct app_wmi_args));
args.class = 1;
args.arg1 = token->location;
args.arg2 = token->value;
dell_wmi_perform_query(&args);
buffer = dell_smbios_get_buffer();
buffer->input[0] = token->location;
buffer->input[1] = token->value;
dell_smbios_send_request(1, 0);
dell_smbios_release_buffer();
return state;
}