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>
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cf0d7ea335
Коммит
0c41a08e13
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@ -43,64 +43,13 @@ MODULE_ALIAS("wmi:" DELL_LED_BIOS_GUID);
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#define CMD_LED_OFF 17
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#define CMD_LED_BLINK 18
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struct app_wmi_args {
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u16 class;
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u16 selector;
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u32 arg1;
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u32 arg2;
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u32 arg3;
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u32 arg4;
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u32 res1;
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u32 res2;
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u32 res3;
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u32 res4;
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char dummy[92];
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};
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#define GLOBAL_MIC_MUTE_ENABLE 0x364
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#define GLOBAL_MIC_MUTE_DISABLE 0x365
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static int dell_wmi_perform_query(struct app_wmi_args *args)
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{
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struct app_wmi_args *bios_return;
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union acpi_object *obj;
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struct acpi_buffer input;
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struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
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acpi_status status;
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u32 rc = -EINVAL;
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input.length = 128;
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input.pointer = args;
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status = wmi_evaluate_method(DELL_APP_GUID, 0, 1, &input, &output);
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if (!ACPI_SUCCESS(status))
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goto err_out0;
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obj = output.pointer;
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if (!obj)
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goto err_out0;
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if (obj->type != ACPI_TYPE_BUFFER)
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goto err_out1;
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bios_return = (struct app_wmi_args *)obj->buffer.pointer;
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rc = bios_return->res1;
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if (rc)
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goto err_out1;
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memcpy(args, bios_return, sizeof(struct app_wmi_args));
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rc = 0;
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err_out1:
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kfree(obj);
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err_out0:
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return rc;
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}
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static int dell_micmute_led_set(int state)
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{
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struct calling_interface_buffer *buffer;
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struct calling_interface_token *token;
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struct app_wmi_args args;
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if (!wmi_has_guid(DELL_APP_GUID))
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return -ENODEV;
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@ -115,13 +64,11 @@ static int dell_micmute_led_set(int state)
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if (!token)
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return -ENODEV;
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memset(&args, 0, sizeof(struct app_wmi_args));
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args.class = 1;
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args.arg1 = token->location;
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args.arg2 = token->value;
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dell_wmi_perform_query(&args);
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buffer = dell_smbios_get_buffer();
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buffer->input[0] = token->location;
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buffer->input[1] = token->value;
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dell_smbios_send_request(1, 0);
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dell_smbios_release_buffer();
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return state;
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}
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