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From: Pavel Rojtberg <rojtberg@gmail.com>
To: linux-input@vger.kernel.org, pgriffais@valvesoftware.com,
	dmitry.torokhov@gmail.com, gregkh@linuxfoundation.org
Cc: Pavel Rojtberg <rojtberg@gmail.com>
Subject: [PATCH 4/6] Input: xpad: factor out URB submission in xpad_play_effect
Date: Sat,  5 Sep 2015 22:58:05 +0200	[thread overview]
Message-ID: <1441486687-4836-5-git-send-email-rojtberg@gmail.com> (raw)
In-Reply-To: <1441486687-4836-1-git-send-email-rojtberg@gmail.com>

From: Pavel Rojtberg <rojtberg@gmail.com>

Move submisson logic to a single point at the end of the function.
This makes it easy to add locking/ queuing code later on.

Signed-off-by: Pavel Rojtberg <rojtberg@gmail.com>
---
 drivers/input/joystick/xpad.c | 140 ++++++++++++++++++++++++++++++++---------------------------------
 1 file changed, 69 insertions(+), 71 deletions(-)

diff --git a/drivers/input/joystick/xpad.c b/drivers/input/joystick/xpad.c
index 9c95db7..3fe8500 100644
--- a/drivers/input/joystick/xpad.c
+++ b/drivers/input/joystick/xpad.c
@@ -759,80 +759,78 @@ static void xpad_deinit_output(struct usb_xpad *xpad)
 static int xpad_play_effect(struct input_dev *dev, void *data, struct ff_effect *effect)
 {
 	struct usb_xpad *xpad = input_get_drvdata(dev);
+	__u16 strong;
+	__u16 weak;
 
-	if (effect->type == FF_RUMBLE) {
-		__u16 strong = effect->u.rumble.strong_magnitude;
-		__u16 weak = effect->u.rumble.weak_magnitude;
-
-		switch (xpad->xtype) {
-
-		case XTYPE_XBOX:
-			xpad->odata[0] = 0x00;
-			xpad->odata[1] = 0x06;
-			xpad->odata[2] = 0x00;
-			xpad->odata[3] = strong / 256;	/* left actuator */
-			xpad->odata[4] = 0x00;
-			xpad->odata[5] = weak / 256;	/* right actuator */
-			xpad->irq_out->transfer_buffer_length = 6;
-
-			return usb_submit_urb(xpad->irq_out, GFP_ATOMIC);
-
-		case XTYPE_XBOX360:
-			xpad->odata[0] = 0x00;
-			xpad->odata[1] = 0x08;
-			xpad->odata[2] = 0x00;
-			xpad->odata[3] = strong / 256;  /* left actuator? */
-			xpad->odata[4] = weak / 256;	/* right actuator? */
-			xpad->odata[5] = 0x00;
-			xpad->odata[6] = 0x00;
-			xpad->odata[7] = 0x00;
-			xpad->irq_out->transfer_buffer_length = 8;
-
-			return usb_submit_urb(xpad->irq_out, GFP_ATOMIC);
-
-		case XTYPE_XBOX360W:
-			xpad->odata[0] = 0x00;
-			xpad->odata[1] = 0x01;
-			xpad->odata[2] = 0x0F;
-			xpad->odata[3] = 0xC0;
-			xpad->odata[4] = 0x00;
-			xpad->odata[5] = strong / 256;
-			xpad->odata[6] = weak / 256;
-			xpad->odata[7] = 0x00;
-			xpad->odata[8] = 0x00;
-			xpad->odata[9] = 0x00;
-			xpad->odata[10] = 0x00;
-			xpad->odata[11] = 0x00;
-			xpad->irq_out->transfer_buffer_length = 12;
-
-			return usb_submit_urb(xpad->irq_out, GFP_ATOMIC);
-
-		case XTYPE_XBOXONE:
-			xpad->odata[0] = 0x09; /* activate rumble */
-			xpad->odata[1] = 0x08;
-			xpad->odata[2] = 0x00;
-			xpad->odata[3] = 0x08; /* continuous effect */
-			xpad->odata[4] = 0x00; /* simple rumble mode */
-			xpad->odata[5] = 0x03; /* L and R actuator only */
-			xpad->odata[6] = 0x00; /* TODO: LT actuator */
-			xpad->odata[7] = 0x00; /* TODO: RT actuator */
-			xpad->odata[8] = strong / 256;	/* left actuator */
-			xpad->odata[9] = weak / 256;	/* right actuator */
-			xpad->odata[10] = 0x80;	/* length of pulse */
-			xpad->odata[11] = 0x00;	/* stop period of pulse */
-			xpad->irq_out->transfer_buffer_length = 12;
-
-			return usb_submit_urb(xpad->irq_out, GFP_ATOMIC);
-
-		default:
-			dev_dbg(&xpad->dev->dev,
-				"%s - rumble command sent to unsupported xpad type: %d\n",
-				__func__, xpad->xtype);
-			return -1;
-		}
+	if (effect->type != FF_RUMBLE)
+		return 0;
+
+	strong = effect->u.rumble.strong_magnitude;
+	weak = effect->u.rumble.weak_magnitude;
+
+	switch (xpad->xtype) {
+	case XTYPE_XBOX:
+		xpad->odata[0] = 0x00;
+		xpad->odata[1] = 0x06;
+		xpad->odata[2] = 0x00;
+		xpad->odata[3] = strong / 256;	/* left actuator */
+		xpad->odata[4] = 0x00;
+		xpad->odata[5] = weak / 256;	/* right actuator */
+		xpad->irq_out->transfer_buffer_length = 6;
+		break;
+
+	case XTYPE_XBOX360:
+		xpad->odata[0] = 0x00;
+		xpad->odata[1] = 0x08;
+		xpad->odata[2] = 0x00;
+		xpad->odata[3] = strong / 256;  /* left actuator? */
+		xpad->odata[4] = weak / 256;	/* right actuator? */
+		xpad->odata[5] = 0x00;
+		xpad->odata[6] = 0x00;
+		xpad->odata[7] = 0x00;
+		xpad->irq_out->transfer_buffer_length = 8;
+		break;
+
+	case XTYPE_XBOX360W:
+		xpad->odata[0] = 0x00;
+		xpad->odata[1] = 0x01;
+		xpad->odata[2] = 0x0F;
+		xpad->odata[3] = 0xC0;
+		xpad->odata[4] = 0x00;
+		xpad->odata[5] = strong / 256;
+		xpad->odata[6] = weak / 256;
+		xpad->odata[7] = 0x00;
+		xpad->odata[8] = 0x00;
+		xpad->odata[9] = 0x00;
+		xpad->odata[10] = 0x00;
+		xpad->odata[11] = 0x00;
+		xpad->irq_out->transfer_buffer_length = 12;
+		break;
+
+	case XTYPE_XBOXONE:
+		xpad->odata[0] = 0x09; /* activate rumble */
+		xpad->odata[1] = 0x08;
+		xpad->odata[2] = 0x00;
+		xpad->odata[3] = 0x08; /* continuous effect */
+		xpad->odata[4] = 0x00; /* simple rumble mode */
+		xpad->odata[5] = 0x03; /* L and R actuator only */
+		xpad->odata[6] = 0x00; /* TODO: LT actuator */
+		xpad->odata[7] = 0x00; /* TODO: RT actuator */
+		xpad->odata[8] = strong / 256;	/* left actuator */
+		xpad->odata[9] = weak / 256;	/* right actuator */
+		xpad->odata[10] = 0x80;	/* length of pulse */
+		xpad->odata[11] = 0x00;	/* stop period of pulse */
+		xpad->irq_out->transfer_buffer_length = 12;
+		break;
+
+	default:
+		dev_dbg(&xpad->dev->dev,
+			"%s - rumble command sent to unsupported xpad type: %d\n",
+			__func__, xpad->xtype);
+		return -EINVAL;
 	}
 
-	return 0;
+	return usb_submit_urb(xpad->irq_out, GFP_ATOMIC);
 }
 
 static int xpad_init_ff(struct usb_xpad *xpad)
-- 
1.9.1


  parent reply	other threads:[~2015-09-05 20:58 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-09-05 20:58 [PATCH 0/6] Input: xpad: updates and refactoring Pavel Rojtberg
2015-09-05 20:58 ` [PATCH 1/6] Input: xpad: add Covert Forces edition of the Xbox One controller Pavel Rojtberg
2015-09-05 20:58 ` [PATCH 2/6] Input: xpad: clarify LED enumeration Pavel Rojtberg
2015-09-05 20:58 ` [PATCH 3/6] Input: xpad: remove needless bulk out URB used for LED setup Pavel Rojtberg
2015-09-05 20:58 ` Pavel Rojtberg [this message]
2015-09-05 20:58 ` [PATCH 5/6] Input: xpad: x360w: report dpad as buttons and axes Pavel Rojtberg
2015-09-05 20:58 ` [PATCH 6/6] Input: xpad: reset usb device on resume Pavel Rojtberg
2015-09-13 12:04 ` [PATCH 0/6] Input: xpad: updates and refactoring Pavel Rojtberg

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