platform/x86: asus-wmi: export function for evaluating WMI methods

Export asus_wmi_evaluate_method() and related headers for use by other
drivers.

hid-asus is going to use this to avoid advertising that it has a keyboard
backlight when the keyboard backlight is controlled via WMI.

Signed-off-by: Daniel Drake <drake@endlessm.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>

2 files changed, 104 insertions, 85 deletions

diff --git a/drivers/platform/x86/asus-wmi.c b/drivers/platform/x86/asus-wmi.c
index a805227b31e1..b52b192a4f16 100644
--- a/drivers/platform/x86/asus-wmi.c
+++ b/drivers/platform/x86/asus-wmi.c
@@ -43,6 +43,7 @@
 #include <linux/hwmon-sysfs.h>
 #include <linux/debugfs.h>
 #include <linux/seq_file.h>
+#include <linux/platform_data/x86/asus-wmi.h>
 #include <linux/platform_device.h>
 #include <linux/thermal.h>
 #include <linux/acpi.h>
@@ -69,89 +70,6 @@ MODULE_LICENSE("GPL");
 #define NOTIFY_KBD_BRTDWN		0xc5
 #define NOTIFY_KBD_BRTTOGGLE		0xc7
 
-/* WMI Methods */
-#define ASUS_WMI_METHODID_SPEC	        0x43455053 /* BIOS SPECification */
-#define ASUS_WMI_METHODID_SFBD		0x44424653 /* Set First Boot Device */
-#define ASUS_WMI_METHODID_GLCD		0x44434C47 /* Get LCD status */
-#define ASUS_WMI_METHODID_GPID		0x44495047 /* Get Panel ID?? (Resol) */
-#define ASUS_WMI_METHODID_QMOD		0x444F4D51 /* Quiet MODe */
-#define ASUS_WMI_METHODID_SPLV		0x4C425053 /* Set Panel Light Value */
-#define ASUS_WMI_METHODID_AGFN		0x4E464741 /* FaN? */
-#define ASUS_WMI_METHODID_SFUN		0x4E554653 /* FUNCtionalities */
-#define ASUS_WMI_METHODID_SDSP		0x50534453 /* Set DiSPlay output */
-#define ASUS_WMI_METHODID_GDSP		0x50534447 /* Get DiSPlay output */
-#define ASUS_WMI_METHODID_DEVP		0x50564544 /* DEVice Policy */
-#define ASUS_WMI_METHODID_OSVR		0x5256534F /* OS VeRsion */
-#define ASUS_WMI_METHODID_DSTS		0x53544344 /* Device STatuS */
-#define ASUS_WMI_METHODID_DSTS2		0x53545344 /* Device STatuS #2*/
-#define ASUS_WMI_METHODID_BSTS		0x53545342 /* Bios STatuS ? */
-#define ASUS_WMI_METHODID_DEVS		0x53564544 /* DEVice Set */
-#define ASUS_WMI_METHODID_CFVS		0x53564643 /* CPU Frequency Volt Set */
-#define ASUS_WMI_METHODID_KBFT		0x5446424B /* KeyBoard FilTer */
-#define ASUS_WMI_METHODID_INIT		0x54494E49 /* INITialize */
-#define ASUS_WMI_METHODID_HKEY		0x59454B48 /* Hot KEY ?? */
-
-#define ASUS_WMI_UNSUPPORTED_METHOD	0xFFFFFFFE
-
-/* Wireless */
-#define ASUS_WMI_DEVID_HW_SWITCH	0x00010001
-#define ASUS_WMI_DEVID_WIRELESS_LED	0x00010002
-#define ASUS_WMI_DEVID_CWAP		0x00010003
-#define ASUS_WMI_DEVID_WLAN		0x00010011
-#define ASUS_WMI_DEVID_WLAN_LED		0x00010012
-#define ASUS_WMI_DEVID_BLUETOOTH	0x00010013
-#define ASUS_WMI_DEVID_GPS		0x00010015
-#define ASUS_WMI_DEVID_WIMAX		0x00010017
-#define ASUS_WMI_DEVID_WWAN3G		0x00010019
-#define ASUS_WMI_DEVID_UWB		0x00010021
-
-/* Leds */
-/* 0x000200XX and 0x000400XX */
-#define ASUS_WMI_DEVID_LED1		0x00020011
-#define ASUS_WMI_DEVID_LED2		0x00020012
-#define ASUS_WMI_DEVID_LED3		0x00020013
-#define ASUS_WMI_DEVID_LED4		0x00020014
-#define ASUS_WMI_DEVID_LED5		0x00020015
-#define ASUS_WMI_DEVID_LED6		0x00020016
-
-/* Backlight and Brightness */
-#define ASUS_WMI_DEVID_ALS_ENABLE	0x00050001 /* Ambient Light Sensor */
-#define ASUS_WMI_DEVID_BACKLIGHT	0x00050011
-#define ASUS_WMI_DEVID_BRIGHTNESS	0x00050012
-#define ASUS_WMI_DEVID_KBD_BACKLIGHT	0x00050021
-#define ASUS_WMI_DEVID_LIGHT_SENSOR	0x00050022 /* ?? */
-#define ASUS_WMI_DEVID_LIGHTBAR		0x00050025
-
-/* Misc */
-#define ASUS_WMI_DEVID_CAMERA		0x00060013
-
-/* Storage */
-#define ASUS_WMI_DEVID_CARDREADER	0x00080013
-
-/* Input */
-#define ASUS_WMI_DEVID_TOUCHPAD		0x00100011
-#define ASUS_WMI_DEVID_TOUCHPAD_LED	0x00100012
-
-/* Fan, Thermal */
-#define ASUS_WMI_DEVID_THERMAL_CTRL	0x00110011
-#define ASUS_WMI_DEVID_FAN_CTRL		0x00110012
-
-/* Power */
-#define ASUS_WMI_DEVID_PROCESSOR_STATE	0x00120012
-
-/* Deep S3 / Resume on LID open */
-#define ASUS_WMI_DEVID_LID_RESUME	0x00120031
-
-/* DSTS masks */
-#define ASUS_WMI_DSTS_STATUS_BIT	0x00000001
-#define ASUS_WMI_DSTS_UNKNOWN_BIT	0x00000002
-#define ASUS_WMI_DSTS_PRESENCE_BIT	0x00010000
-#define ASUS_WMI_DSTS_USER_BIT		0x00020000
-#define ASUS_WMI_DSTS_BIOS_BIT		0x00040000
-#define ASUS_WMI_DSTS_BRIGHTNESS_MASK	0x000000FF
-#define ASUS_WMI_DSTS_MAX_BRIGTH_MASK	0x0000FF00
-#define ASUS_WMI_DSTS_LIGHTBAR_MASK	0x0000000F
-
 #define ASUS_FAN_DESC			"cpu_fan"
 #define ASUS_FAN_MFUN			0x13
 #define ASUS_FAN_SFUN_READ		0x06
@@ -301,8 +219,7 @@ static void asus_wmi_input_exit(struct asus_wmi *asus)
 	asus->inputdev = NULL;
 }
 
-static int asus_wmi_evaluate_method(u32 method_id, u32 arg0, u32 arg1,
-				    u32 *retval)
+int asus_wmi_evaluate_method(u32 method_id, u32 arg0, u32 arg1, u32 *retval)
 {
 	struct bios_args args = {
 		.arg0 = arg0,
@@ -338,6 +255,7 @@ exit:
 
 	return 0;
 }
+EXPORT_SYMBOL_GPL(asus_wmi_evaluate_method);
 
 static int asus_wmi_evaluate_method_agfn(const struct acpi_buffer args)
 {
diff --git a/include/linux/platform_data/x86/asus-wmi.h b/include/linux/platform_data/x86/asus-wmi.h
new file mode 100644
index 000000000000..53dfc2541960
--- /dev/null
+++ b/include/linux/platform_data/x86/asus-wmi.h
@@ -0,0 +1,101 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef __PLATFORM_DATA_X86_ASUS_WMI_H
+#define __PLATFORM_DATA_X86_ASUS_WMI_H
+
+#include <linux/errno.h>
+#include <linux/types.h>
+
+/* WMI Methods */
+#define ASUS_WMI_METHODID_SPEC	        0x43455053 /* BIOS SPECification */
+#define ASUS_WMI_METHODID_SFBD		0x44424653 /* Set First Boot Device */
+#define ASUS_WMI_METHODID_GLCD		0x44434C47 /* Get LCD status */
+#define ASUS_WMI_METHODID_GPID		0x44495047 /* Get Panel ID?? (Resol) */
+#define ASUS_WMI_METHODID_QMOD		0x444F4D51 /* Quiet MODe */
+#define ASUS_WMI_METHODID_SPLV		0x4C425053 /* Set Panel Light Value */
+#define ASUS_WMI_METHODID_AGFN		0x4E464741 /* FaN? */
+#define ASUS_WMI_METHODID_SFUN		0x4E554653 /* FUNCtionalities */
+#define ASUS_WMI_METHODID_SDSP		0x50534453 /* Set DiSPlay output */
+#define ASUS_WMI_METHODID_GDSP		0x50534447 /* Get DiSPlay output */
+#define ASUS_WMI_METHODID_DEVP		0x50564544 /* DEVice Policy */
+#define ASUS_WMI_METHODID_OSVR		0x5256534F /* OS VeRsion */
+#define ASUS_WMI_METHODID_DSTS		0x53544344 /* Device STatuS */
+#define ASUS_WMI_METHODID_DSTS2		0x53545344 /* Device STatuS #2*/
+#define ASUS_WMI_METHODID_BSTS		0x53545342 /* Bios STatuS ? */
+#define ASUS_WMI_METHODID_DEVS		0x53564544 /* DEVice Set */
+#define ASUS_WMI_METHODID_CFVS		0x53564643 /* CPU Frequency Volt Set */
+#define ASUS_WMI_METHODID_KBFT		0x5446424B /* KeyBoard FilTer */
+#define ASUS_WMI_METHODID_INIT		0x54494E49 /* INITialize */
+#define ASUS_WMI_METHODID_HKEY		0x59454B48 /* Hot KEY ?? */
+
+#define ASUS_WMI_UNSUPPORTED_METHOD	0xFFFFFFFE
+
+/* Wireless */
+#define ASUS_WMI_DEVID_HW_SWITCH	0x00010001
+#define ASUS_WMI_DEVID_WIRELESS_LED	0x00010002
+#define ASUS_WMI_DEVID_CWAP		0x00010003
+#define ASUS_WMI_DEVID_WLAN		0x00010011
+#define ASUS_WMI_DEVID_WLAN_LED		0x00010012
+#define ASUS_WMI_DEVID_BLUETOOTH	0x00010013
+#define ASUS_WMI_DEVID_GPS		0x00010015
+#define ASUS_WMI_DEVID_WIMAX		0x00010017
+#define ASUS_WMI_DEVID_WWAN3G		0x00010019
+#define ASUS_WMI_DEVID_UWB		0x00010021
+
+/* Leds */
+/* 0x000200XX and 0x000400XX */
+#define ASUS_WMI_DEVID_LED1		0x00020011
+#define ASUS_WMI_DEVID_LED2		0x00020012
+#define ASUS_WMI_DEVID_LED3		0x00020013
+#define ASUS_WMI_DEVID_LED4		0x00020014
+#define ASUS_WMI_DEVID_LED5		0x00020015
+#define ASUS_WMI_DEVID_LED6		0x00020016
+
+/* Backlight and Brightness */
+#define ASUS_WMI_DEVID_ALS_ENABLE	0x00050001 /* Ambient Light Sensor */
+#define ASUS_WMI_DEVID_BACKLIGHT	0x00050011
+#define ASUS_WMI_DEVID_BRIGHTNESS	0x00050012
+#define ASUS_WMI_DEVID_KBD_BACKLIGHT	0x00050021
+#define ASUS_WMI_DEVID_LIGHT_SENSOR	0x00050022 /* ?? */
+#define ASUS_WMI_DEVID_LIGHTBAR		0x00050025
+
+/* Misc */
+#define ASUS_WMI_DEVID_CAMERA		0x00060013
+
+/* Storage */
+#define ASUS_WMI_DEVID_CARDREADER	0x00080013
+
+/* Input */
+#define ASUS_WMI_DEVID_TOUCHPAD		0x00100011
+#define ASUS_WMI_DEVID_TOUCHPAD_LED	0x00100012
+
+/* Fan, Thermal */
+#define ASUS_WMI_DEVID_THERMAL_CTRL	0x00110011
+#define ASUS_WMI_DEVID_FAN_CTRL		0x00110012
+
+/* Power */
+#define ASUS_WMI_DEVID_PROCESSOR_STATE	0x00120012
+
+/* Deep S3 / Resume on LID open */
+#define ASUS_WMI_DEVID_LID_RESUME	0x00120031
+
+/* DSTS masks */
+#define ASUS_WMI_DSTS_STATUS_BIT	0x00000001
+#define ASUS_WMI_DSTS_UNKNOWN_BIT	0x00000002
+#define ASUS_WMI_DSTS_PRESENCE_BIT	0x00010000
+#define ASUS_WMI_DSTS_USER_BIT		0x00020000
+#define ASUS_WMI_DSTS_BIOS_BIT		0x00040000
+#define ASUS_WMI_DSTS_BRIGHTNESS_MASK	0x000000FF
+#define ASUS_WMI_DSTS_MAX_BRIGTH_MASK	0x0000FF00
+#define ASUS_WMI_DSTS_LIGHTBAR_MASK	0x0000000F
+
+#if IS_REACHABLE(CONFIG_ASUS_WMI)
+int asus_wmi_evaluate_method(u32 method_id, u32 arg0, u32 arg1, u32 *retval);
+#else
+static inline int asus_wmi_evaluate_method(u32 method_id, u32 arg0, u32 arg1,
+					   u32 *retval)
+{
+	return -ENODEV;
+}
+#endif
+
+#endif	/* __PLATFORM_DATA_X86_ASUS_WMI_H */