Re: [PATCH v2] alps: Add support for v7 devices

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Hi,

On 07/26/2014 11:09 PM, Dmitry Torokhov wrote:
Hi Hans,

On Sat, Jul 26, 2014 at 02:13:52PM +0200, Hans de Goede wrote:
From: Yunkang Tang <yunkang.tang@xxxxxxxxxxx>

Such as found on the new Toshiba Portégé Z30-A and Z40-A.

Signed-off-by: Yunkang Tang <yunkang.tang@xxxxxxxxxxx>
[hdegoede@xxxxxxxxxx: Remove softbutton handling, this is done in userspace]
[hdegoede@xxxxxxxxxx: Report INPUT_PROP_BUTTONPAD]
[hdegoede@xxxxxxxxxx: Do not report fake PRESSURE, reporting BTN_TOUCH is
  enough]
[hdegoede@xxxxxxxxxx: Various cleanups / refactoring]
Signed-off-by: Hans de Goede <hdegoede@xxxxxxxxxx>

--
Changes in v2:
-alps_is_valid_package_v7: switch to using a switch-case
-alps_check_valid_firmware_id: fix to not always return true

Thank you for whipping the update so quickly.

+
+static void alps_get_finger_coordinate_v7(struct input_mt_pos *mt,
+					  unsigned char *pkt,
+					  unsigned char pkt_id)
+{
+	mt[0].x = ((pkt[2] & 0x80) << 4);
+	mt[0].x |= ((pkt[2] & 0x3F) << 5);
+	mt[0].x |= ((pkt[3] & 0x30) >> 1);
+	mt[0].x |= (pkt[3] & 0x07);
+	mt[0].y = (pkt[1] << 3) | (pkt[0] & 0x07);
+
+	mt[1].x = ((pkt[3] & 0x80) << 4);
+	mt[1].x |= ((pkt[4] & 0x80) << 3);
+	mt[1].x |= ((pkt[4] & 0x3F) << 4);
+	mt[1].y = ((pkt[5] & 0x80) << 3);
+	mt[1].y |= ((pkt[5] & 0x3F) << 4);
+
+	if (pkt_id == V7_PACKET_ID_TWO) {
+		mt[1].x &= ~0x000F;
+		mt[1].y |= 0x000F;
+	} else if (pkt_id == V7_PACKET_ID_MULTI) {
+		mt[1].x &= ~0x003F;
+		mt[1].y &= ~0x0020;
+		mt[1].y |= ((pkt[4] & 0x02) << 4);
+		mt[1].y |= 0x001F;
+	} else if (pkt_id == V7_PACKET_ID_NEW) {
+		mt[1].x &= ~0x003F;
+		mt[1].x |= (pkt[0] & 0x20);
+		mt[1].y |= 0x000F;
+	}

I took the liberty of changing the above to another switch/case...


+static bool alps_check_valid_firmware_id(unsigned char id[])
+{
+	if (id[0] == 0x73)
+		return true;
+
+	if (id[0] == 0x88 &&
+			(id[1] == 0x07 || id[1] == 0x08 ||
+			 (id[1] & 0xf0) == 0xb0 || (id[1] & 0xf0) == 0xc0))

And split this condition into 1 line per id[1] check...

+		return true;
+
+	return false;
+}
+

And applied and pushed out everything.

Ok, thanks.

Regards,

Hans
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