From 8e4bff4cab0ddac6060645b0715210484d02ff40 Mon Sep 17 00:00:00 2001
From: Yuval Adam <_@yuv.al>
Date: Wed, 30 Aug 2017 08:25:59 +0000
Subject: Initial file dump from open source release

---
 drivers/input/touchscreen/msg2233/mstar_drv_qcom.c | 156 +++++++++++++++++++++
 1 file changed, 156 insertions(+)
 create mode 100644 drivers/input/touchscreen/msg2233/mstar_drv_qcom.c

(limited to 'drivers/input/touchscreen/msg2233/mstar_drv_qcom.c')

diff --git a/drivers/input/touchscreen/msg2233/mstar_drv_qcom.c b/drivers/input/touchscreen/msg2233/mstar_drv_qcom.c
new file mode 100644
index 00000000..cf1f6c2b
--- /dev/null
+++ b/drivers/input/touchscreen/msg2233/mstar_drv_qcom.c
@@ -0,0 +1,156 @@
+////////////////////////////////////////////////////////////////////////////////
+//
+// Copyright (c) 2006-2014 MStar Semiconductor, Inc.
+// All rights reserved.
+//
+// Unless otherwise stipulated in writing, any and all information contained
+// herein regardless in any format shall remain the sole proprietary of
+// MStar Semiconductor Inc. and be kept in strict confidence
+// (??MStar Confidential Information??) by the recipient.
+// Any unauthorized act including without limitation unauthorized disclosure,
+// copying, use, reproduction, sale, distribution, modification, disassembling,
+// reverse engineering and compiling of the contents of MStar Confidential
+// Information is unlawful and strictly prohibited. MStar hereby reserves the
+// rights to any and all damages, losses, costs and expenses resulting therefrom.
+//
+////////////////////////////////////////////////////////////////////////////////
+
+/**
+ *
+ * @file    mstar_drv_qcom.c
+ *
+ * @brief   This file defines the interface of touch screen
+ *
+ *
+ */
+ 
+/*=============================================================*/
+// INCLUDE FILE
+/*=============================================================*/
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/types.h>
+#include <linux/input.h>
+#include <linux/kernel.h>
+#include <linux/delay.h>
+#include <linux/platform_device.h>
+#include <linux/slab.h>
+#include <linux/gpio.h>
+#include <linux/i2c.h>
+#include <linux/kobject.h>
+#include <asm/irq.h>
+#include <asm/io.h>
+
+
+#include "mstar_drv_platform_interface.h"
+
+#ifdef CONFIG_ENABLE_REGULATOR_POWER_ON
+#include <linux/regulator/consumer.h>
+#endif //CONFIG_ENABLE_REGULATOR_POWER_ON
+
+/*=============================================================*/
+// CONSTANT VALUE DEFINITION
+/*=============================================================*/
+
+#define MSG_TP_IC_NAME "msg2xxx" //"msg21xxA" or "msg22xx" or "msg26xxM" /* Please define the mstar touch ic name based on the mutual-capacitive ic or self capacitive ic that you are using */
+
+/*=============================================================*/
+// VARIABLE DEFINITION
+/*=============================================================*/
+
+struct i2c_client *g_I2cClient = NULL;
+
+#ifdef CONFIG_ENABLE_REGULATOR_POWER_ON
+struct regulator *g_ReguVdd = NULL;
+#endif //CONFIG_ENABLE_REGULATOR_POWER_ON
+
+/*=============================================================*/
+// FUNCTION DEFINITION
+/*=============================================================*/
+
+/* probe function is used for matching and initializing input device */
+static int __devinit touch_driver_probe(struct i2c_client *client,
+        const struct i2c_device_id *id)
+{
+#ifdef CONFIG_ENABLE_REGULATOR_POWER_ON
+    const char *vdd_name = "vdd";
+#endif //CONFIG_ENABLE_REGULATOR_POWER_ON
+
+    DBG("*** %s ***\n", __FUNCTION__);
+    
+    if (client == NULL)
+    {
+        DBG("i2c client is NULL\n");
+        return -1;
+    }
+    g_I2cClient = client;
+
+#ifdef CONFIG_ENABLE_REGULATOR_POWER_ON
+    g_ReguVdd = regulator_get(&g_I2cClient->dev, vdd_name);
+#endif //CONFIG_ENABLE_REGULATOR_POWER_ON
+
+    return MsDrvInterfaceTouchDeviceProbe(g_I2cClient, id);
+}
+
+/* remove function is triggered when the input device is removed from input sub-system */
+static int touch_driver_remove(struct i2c_client *client)
+{
+    DBG("*** %s ***\n", __FUNCTION__);
+
+    return MsDrvInterfaceTouchDeviceRemove(client);
+}
+
+/* The I2C device list is used for matching I2C device and I2C device driver. */
+static const struct i2c_device_id touch_device_id[] =
+{
+    {MSG_TP_IC_NAME, 0},
+    {}, /* should not omitted */ 
+};
+
+MODULE_DEVICE_TABLE(i2c, touch_device_id);
+
+static struct of_device_id touch_match_table[] = {
+    { .compatible = "mstar,msg2xxx",},
+    {},
+};
+
+static struct i2c_driver touch_device_driver =
+{
+    .driver = {
+        .name = MSG_TP_IC_NAME,
+        .owner = THIS_MODULE,
+        .of_match_table = touch_match_table,
+    },
+    .probe = touch_driver_probe,
+    .remove = touch_driver_remove,
+    .id_table = touch_device_id,
+};
+
+static int __init touch_driver_init(void)
+{
+    int ret;
+
+    /* register driver */
+    ret = i2c_add_driver(&touch_device_driver);
+    if (ret < 0)
+    {
+        DBG("add touch device driver i2c driver failed.\n");
+        return -ENODEV;
+    }
+    DBG("add touch device driver i2c driver.\n");
+
+    return ret;
+}
+
+static void __exit touch_driver_exit(void)
+{
+    DBG("remove touch device driver i2c driver.\n");
+
+    i2c_del_driver(&touch_device_driver);
+}
+
+module_init(touch_driver_init);
+module_exit(touch_driver_exit);
+MODULE_LICENSE("GPL");
\ No newline at end of file
-- 
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