Initial file dump from open source releaseHEADmaster

1 files changed, 238 insertions, 0 deletions

diff --git a/drivers/input/touchscreen/msg2138/mstar_drv_sprd.c b/drivers/input/touchscreen/msg2138/mstar_drv_sprd.c
new file mode 100644
index 00000000..03c0ad7a
--- /dev/null
+++ b/drivers/input/touchscreen/msg2138/mstar_drv_sprd.c
@@ -0,0 +1,238 @@
+////////////////////////////////////////////////////////////////////////////////
+//
+// Copyright (c) 2006-2012 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_sprd.c
+ *
+ * @brief   This file defines the interface of touch screen
+ *
+ * @version v2.2.0.0
+ *
+ */
+
+/*=============================================================*/
+// 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/earlysuspend.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 <soc/sprd/regulator.h>
+#include <linux/regulator/consumer.h>
+#endif //CONFIG_ENABLE_REGULATOR_POWER_ON
+
+#include <linux/of_device.h>
+#include <linux/of_address.h>
+#include <linux/of_gpio.h>
+
+/*=============================================================*/
+// CONSTANT VALUE DEFINITION
+/*=============================================================*/
+//#define MSG_TP_IC_NAME "pixcir_ts" //"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;
+int TOUCH_SCREEN_X_MAX = 0;
+int TOUCH_SCREEN_Y_MAX = 0;
+int MS_TS_MSG_IC_GPIO_RST = 0;
+int MS_TS_MSG_IC_GPIO_INT = 0;
+
+#ifdef CONFIG_ENABLE_REGULATOR_POWER_ON
+struct regulator *g_ReguVdd = NULL;
+#endif //CONFIG_ENABLE_REGULATOR_POWER_ON
+
+#ifdef CONFIG_OF
+static struct msg2138_ts_platform_data *pixcir_ts_parse_dt(struct device *dev)
+{
+	struct msg2138_ts_platform_data *pdata = NULL;
+	struct device_node *np = dev->of_node;
+	int ret;
+
+	pdata = kzalloc(sizeof(*pdata), GFP_KERNEL);
+	if (!pdata) {
+		dev_err(dev, "Could not allocate struct msg2138_ts_platform_data");
+		return NULL;
+	}
+	pdata->reset_gpio_number = of_get_gpio(np, 0);
+	if(pdata->reset_gpio_number < 0){
+		dev_err(dev, "fail to get reset_gpio_number\n");
+		goto fail;
+	}
+	pdata->irq_gpio_number = of_get_gpio(np, 1);
+	if(pdata->irq_gpio_number < 0){
+		dev_err(dev, "fail to get irq_gpio_number\n");
+		goto fail;
+	}
+	ret = of_property_read_string(np, "vdd_name", &pdata->vdd_name);
+	if(ret){
+		dev_err(dev, "fail to get vdd_name\n");
+		goto fail;
+	}
+	ret = of_property_read_u32_array(np, "virtualkeys", &pdata->virtualkeys,12);
+	if(ret){
+		dev_err(dev, "fail to get virtualkeys\n");
+		goto fail;
+	}
+	ret = of_property_read_u32(np, "TP_MAX_X", &pdata->TP_MAX_X);
+	if(ret){
+		dev_err(dev, "fail to get TP_MAX_X\n");
+		goto fail;
+	}
+	ret = of_property_read_u32(np, "TP_MAX_Y", &pdata->TP_MAX_Y);
+	if(ret){
+		dev_err(dev, "fail to get TP_MAX_Y\n");
+		goto fail;
+	}
+
+	return pdata;
+fail:
+	kfree(pdata);
+	return NULL;
+}
+#endif
+
+/*=============================================================*/
+// 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)
+{
+    struct msg2138_ts_platform_data *pdata = client->dev.platform_data;
+    int err = 0, i = 0;
+
+    DBG("*** %s ***\n", __FUNCTION__);
+
+    if (client == NULL)
+    {
+        DBG("i2c client is NULL\n");
+        return -1;
+    }
+
+#ifdef CONFIG_OF
+    struct device_node *np = client->dev.of_node;
+    if (np && !pdata){
+        pdata = pixcir_ts_parse_dt(&client->dev);
+        if(pdata){
+		client->dev.platform_data = pdata;
+        } else {
+		err = -ENOMEM;
+		goto exit_alloc_platform_data_failed;
+        }
+    }
+#endif
+
+    g_I2cClient = client;
+    MS_TS_MSG_IC_GPIO_RST = pdata->reset_gpio_number;
+    MS_TS_MSG_IC_GPIO_INT = pdata->irq_gpio_number;
+    TOUCH_SCREEN_X_MAX = pdata->TP_MAX_X;
+    TOUCH_SCREEN_Y_MAX = pdata->TP_MAX_Y;
+
+    for(i=0; i<MAX_FINGER_NUM*2; i++) {
+        point_slot[i].active = 0;
+    }
+#ifdef CONFIG_ENABLE_REGULATOR_POWER_ON
+    g_ReguVdd = regulator_get(&g_I2cClient->dev, pdata->vdd_name);
+#endif //CONFIG_ENABLE_REGULATOR_POWER_ON
+
+    return MsDrvInterfaceTouchDeviceProbe(g_I2cClient, id);
+exit_alloc_platform_data_failed:
+    return err;
+}
+
+/* remove function is triggered when the input device is removed from input sub-system */
+static int /*__devexit*/ 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, MSG_TP_I2C_ADDR}, //SLAVE_I2C_ID_DWI2C
+    {}, /* should not omitted */
+};
+
+MODULE_DEVICE_TABLE(i2c, touch_device_id);
+
+static const struct of_device_id msg2138_of_match[] = {
+       { .compatible = "Mstar,msg2138_ts", },
+       { }
+};
+MODULE_DEVICE_TABLE(of, msg2138_of_match);
+
+static struct i2c_driver touch_device_driver =
+{
+    .driver = {
+        .name = MSG_TP_IC_NAME,
+        .owner = THIS_MODULE,
+        .of_match_table = msg2138_of_match,
+    },
+    .probe = touch_driver_probe,
+    .remove = touch_driver_remove,
+/*    .remove = __devexit_p(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