usbtouchscreen: support bigger iNexio touchscreens

PATCH RESEND Superseded Ondrej Zary 1 participant 1 message Mar 22, 2010

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Ondrej Zary

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2010-03-22 13:29 UTC #0 lore raw

PATCH RESEND 1/1 usbtouchscreen: support bigger iNexio touchscreens

Bigger Nexio touchscreens not only send more data but also the header values are modified somehow. Fix the header somehow (it's a guesswork but it works at least on one 46" touchscreen with 2.00SMS firmware) and also increase rept_size.

Signed-off-by Ondrej Zary <[email protected]>

drivers/input/touchscreen/usbtouchscreen.c +6 -1

@@ -858,6 +858,11 @@
 	if ((pkt[0] & 0xe0) != 0xe0)
 		return 0;
 
+	if (be16_to_cpu(packet->data_len) > 0xff)
+		packet->data_len = cpu_to_be16(be16_to_cpu(packet->data_len) - 0x100);
+	if (be16_to_cpu(packet->x_len) > 0xff)
+		packet->x_len = cpu_to_be16(be16_to_cpu(packet->x_len) - 0x80);
+
 	/* send ACK */
 	ret = usb_submit_urb(priv->ack, GFP_ATOMIC);

@@ -1113,7 +1118,7 @@
 
 #ifdef CONFIG_TOUCHSCREEN_USB_NEXIO
 	[DEVTYPE_NEXIO] = {
-		.rept_size	= 128,
+		.rept_size	= 1024,
 		.irq_always	= true,
 		.read_data	= nexio_read_data,
 		.init		= nexio_init,

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Ondrej Zary