[PATCH v3 3/5] platform/x86: asus-wmi: name the TUF keyboard RGB state and speed codes

[Bartu Alev <bartualev@gmail.com>]

The TUF keyboard RGB attributes encode four power-state flags and three
animation speeds as bare BIT() and hex literals inside their store
handlers.  The speed codes in particular read as arbitrary hex until
one knows they are EC firmware conventions: 0xe1, 0xeb and 0xf5 select
animation step thresholds of 30, 20 and 10 ticks per phase, which the
EC derives from the stored byte through a lookup table.

Give the seven values names and use them in kbd_rgb_mode_store() and
kbd_rgb_state_store(), so the handlers state what they mean without a
decoding comment.  No behavior change.

Suggested-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Bartu Alev <bartualev@gmail.com>
---
 drivers/platform/x86/asus-wmi.c | 25 +++++++++++++++++--------
 1 file changed, 17 insertions(+), 8 deletions(-)

diff --git a/drivers/platform/x86/asus-wmi.c b/drivers/platform/x86/asus-wmi.c
index 5cc71bfac841..c5c0fe92cea0 100644
--- a/drivers/platform/x86/asus-wmi.c
+++ b/drivers/platform/x86/asus-wmi.c
@@ -1047,6 +1047,10 @@ static DEVICE_ATTR_RW(gpu_mux_mode);
 #endif /* IS_ENABLED(CONFIG_ASUS_WMI_DEPRECATED_ATTRS) */
 
 /* TUF Laptop Keyboard RGB Modes **********************************************/
+
+#define TUF_KBD_RGB_SPEED_SLOW		0xe1
+#define TUF_KBD_RGB_SPEED_NORMAL	0xeb
+#define TUF_KBD_RGB_SPEED_FAST		0xf5
 static ssize_t kbd_rgb_mode_store(struct device *dev,
 				 struct device_attribute *attr,
 				 const char *buf, size_t count)
@@ -1080,16 +1084,16 @@ static ssize_t kbd_rgb_mode_store(struct device *dev,
 
 	switch (speed) {
 	case 0:
-		speed = 0xe1;
+		speed = TUF_KBD_RGB_SPEED_SLOW;
 		break;
 	case 1:
-		speed = 0xeb;
+		speed = TUF_KBD_RGB_SPEED_NORMAL;
 		break;
 	case 2:
-		speed = 0xf5;
+		speed = TUF_KBD_RGB_SPEED_FAST;
 		break;
 	default:
-		speed = 0xeb;
+		speed = TUF_KBD_RGB_SPEED_NORMAL;
 	}
 
 	err = asus_wmi_evaluate_method3(ASUS_WMI_METHODID_DEVS, asus->kbd_rgb_dev,
@@ -1115,6 +1119,11 @@ static const struct attribute_group kbd_rgb_mode_group = {
 };
 
 /* TUF Laptop Keyboard RGB State **********************************************/
+
+#define TUF_KBD_RGB_STATE_BOOT		BIT(1)
+#define TUF_KBD_RGB_STATE_AWAKE		BIT(3)
+#define TUF_KBD_RGB_STATE_SLEEP		BIT(5)
+#define TUF_KBD_RGB_STATE_SHUTDOWN	BIT(7)
 static ssize_t kbd_rgb_state_store(struct device *dev,
 				 struct device_attribute *attr,
 				 const char *buf, size_t count)
@@ -1130,13 +1139,13 @@ static ssize_t kbd_rgb_state_store(struct device *dev,
 
 	flags = 0;
 	if (boot)
-		flags |= BIT(1);
+		flags |= TUF_KBD_RGB_STATE_BOOT;
 	if (awake)
-		flags |= BIT(3);
+		flags |= TUF_KBD_RGB_STATE_AWAKE;
 	if (sleep)
-		flags |= BIT(5);
+		flags |= TUF_KBD_RGB_STATE_SLEEP;
 	if (shutdown)
-		flags |= BIT(7);
+		flags |= TUF_KBD_RGB_STATE_SHUTDOWN;
 
 	/* 0xbd is the required default arg0 for the method. Nothing happens otherwise */
 	err = asus_wmi_evaluate_method3(ASUS_WMI_METHODID_DEVS,
-- 
2.56.0