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Message-ID: <ef63b19a6f667b4ffc22f0bacfda60d9e53fcba1.1330505561.git.viresh.kumar@st.com>
Date: Wed, 29 Feb 2012 15:37:31 +0530
From: Viresh Kumar <viresh.kumar@...com>
To: <dmitry.torokhov@...il.com>, <daniel.ritz@....ch>
Cc: <linux-input@...r.kernel.org>, <armando.visconti@...com>,
<shiraz.hashim@...com>, <vipin.kumar@...com>,
<rajeev-dlh.kumar@...com>, <deepak.sikri@...com>,
<vipulkumar.samar@...com>, <amit.virdi@...com>,
<viresh.kumar@...com>, <pratyush.anand@...com>,
<bhupesh.sharma@...com>, <viresh.linux@...il.com>,
<bhavna.yadav@...com>, <vincenzo.frascino@...com>,
<mirko.gardi@...com>, <salvatore.dedominicis@...com>,
<linux-kernel@...r.kernel.org>
Subject: [PATCH V2] Input: usbtouchscreen: add support for Data Modul EasyTouch TP 72037
From: Armando Visconti <armando.visconti@...com>
The Data Modul TP 72037 EasyTouch controller is derived from EGALAX
controller and is capable of detecting dual contacts. Packets can be 5
bytes or 10 bytes long, depending whether one or two contacts are
detected. Format is same as EGALAX touch controller, but with x and y
coordinates inverted.
Signed-off-by: Armando Visconti <armando.visconti@...com>
Signed-off-by: Viresh Kumar <viresh.kumar@...com>
---
Changes since V1:
- defined MULTI_PACKET if not defined earlier
- EGALAX replaced with ETOUCH
drivers/input/touchscreen/Kconfig | 9 ++++
drivers/input/touchscreen/usbtouchscreen.c | 63 ++++++++++++++++++++++++++++
2 files changed, 72 insertions(+), 0 deletions(-)
diff --git a/drivers/input/touchscreen/Kconfig b/drivers/input/touchscreen/Kconfig
index 2b21a70..2acf16f 100644
--- a/drivers/input/touchscreen/Kconfig
+++ b/drivers/input/touchscreen/Kconfig
@@ -607,6 +607,7 @@ config TOUCHSCREEN_USB_COMPOSITE
- JASTEC USB Touch Controller/DigiTech DTR-02U
- Zytronic controllers
- Elo TouchSystems 2700 IntelliTouch
+ - EasyTouch USB Touch Controller from Data Modul
Have a look at <http://linux.chapter7.ch/touchkit/> for
a usage description and the required user-space stuff.
@@ -711,6 +712,14 @@ config TOUCHSCREEN_USB_NEXIO
bool "NEXIO/iNexio device support" if EXPERT
depends on TOUCHSCREEN_USB_COMPOSITE
+config TOUCHSCREEN_USB_EASYTOUCH
+ default y
+ bool "EasyTouch USB Touch controller device support" if EMBEDDED
+ depends on TOUCHSCREEN_USB_COMPOSITE
+ help
+ Say Y here if you have a EasyTouch USB Touch controller device support.
+ If unsure, say N.
+
config TOUCHSCREEN_TOUCHIT213
tristate "Sahara TouchIT-213 touchscreen"
select SERIO
diff --git a/drivers/input/touchscreen/usbtouchscreen.c b/drivers/input/touchscreen/usbtouchscreen.c
index 3a5ebf4..22cd96f 100644
--- a/drivers/input/touchscreen/usbtouchscreen.c
+++ b/drivers/input/touchscreen/usbtouchscreen.c
@@ -17,6 +17,7 @@
* - Zytronic capacitive touchscreen
* - NEXIO/iNexio
* - Elo TouchSystems 2700 IntelliTouch
+ * - EasyTouch USB Dual/Multi touch controller from Data Modul
*
* Copyright (C) 2004-2007 by Daniel Ritz <daniel.ritz@....ch>
* Copyright (C) by Todd E. Johnson (mtouchusb.c)
@@ -140,6 +141,7 @@ enum {
DEVTYPE_TC45USB,
DEVTYPE_NEXIO,
DEVTYPE_ELO,
+ DEVTYPE_ETOUCH,
};
#define USB_DEVICE_HID_CLASS(vend, prod) \
@@ -245,6 +247,10 @@ static const struct usb_device_id usbtouch_devices[] = {
{USB_DEVICE(0x04e7, 0x0020), .driver_info = DEVTYPE_ELO},
#endif
+#ifdef CONFIG_TOUCHSCREEN_USB_EASYTOUCH
+ {USB_DEVICE(0x7374, 0x0001), .driver_info = DEVTYPE_ETOUCH},
+#endif
+
{}
};
@@ -326,6 +332,51 @@ static int egalax_get_pkt_len(unsigned char *buf, int len)
}
#endif
+/*****************************************************************************
+ * EasyTouch part
+ */
+
+#ifdef CONFIG_TOUCHSCREEN_USB_EASYTOUCH
+
+#ifndef MULTI_PACKET
+#define MULTI_PACKET
+#endif
+
+#define ETOUCH_PKT_TYPE_MASK 0xFE
+#define ETOUCH_PKT_TYPE_REPT 0x80
+#define ETOUCH_PKT_TYPE_REPT2 0xB0
+#define ETOUCH_PKT_TYPE_DIAG 0x0A
+
+static int etouch_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
+{
+ if ((pkt[0] & ETOUCH_PKT_TYPE_MASK) != ETOUCH_PKT_TYPE_REPT &&
+ (pkt[0] & ETOUCH_PKT_TYPE_MASK) != ETOUCH_PKT_TYPE_REPT2)
+ return 0;
+
+ dev->x = ((pkt[1] & 0x1F) << 7) | (pkt[2] & 0x7F);
+ dev->y = ((pkt[3] & 0x1F) << 7) | (pkt[4] & 0x7F);
+ dev->touch = pkt[0] & 0x01;
+
+ return 1;
+}
+
+static int etouch_get_pkt_len(unsigned char *buf, int len)
+{
+ switch (buf[0] & ETOUCH_PKT_TYPE_MASK) {
+ case ETOUCH_PKT_TYPE_REPT:
+ case ETOUCH_PKT_TYPE_REPT2:
+ return 5;
+
+ case ETOUCH_PKT_TYPE_DIAG:
+ if (len < 2)
+ return -1;
+
+ return buf[1] + 2;
+ }
+
+ return 0;
+}
+#endif
/*****************************************************************************
* PanJit Part
@@ -1175,6 +1226,18 @@ static struct usbtouch_device_info usbtouch_dev_info[] = {
.exit = nexio_exit,
},
#endif
+#ifdef CONFIG_TOUCHSCREEN_USB_EASYTOUCH
+ [DEVTYPE_ETOUCH] = {
+ .min_xc = 0x0,
+ .max_xc = 0x07ff,
+ .min_yc = 0x0,
+ .max_yc = 0x07ff,
+ .rept_size = 16,
+ .process_pkt = usbtouch_process_multi,
+ .get_pkt_len = etouch_get_pkt_len,
+ .read_data = etouch_read_data,
+ },
+#endif
};
--
1.7.8.110.g4cb5d
--
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