diff options
| author | Yuval Adam <_@yuv.al> | 2017-08-30 08:25:59 +0000 |
|---|---|---|
| committer | Yuval Adam <_@yuv.al> | 2017-08-30 08:25:59 +0000 |
| commit | 8e4bff4cab0ddac6060645b0715210484d02ff40 (patch) | |
| tree | 3a5c3024371a04692a3a6d9974d001cdff8ebf84 /drivers/input/touchscreen/msg2233/mstar_drv_sprd.c | |
Diffstat (limited to 'drivers/input/touchscreen/msg2233/mstar_drv_sprd.c')
| -rw-r--r-- | drivers/input/touchscreen/msg2233/mstar_drv_sprd.c | 242 |
1 files changed, 242 insertions, 0 deletions
diff --git a/drivers/input/touchscreen/msg2233/mstar_drv_sprd.c b/drivers/input/touchscreen/msg2233/mstar_drv_sprd.c new file mode 100644 index 00000000..58754864 --- /dev/null +++ b/drivers/input/touchscreen/msg2233/mstar_drv_sprd.c @@ -0,0 +1,242 @@ +////////////////////////////////////////////////////////////////////////////////
+//
+// 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_sprd.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/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>
+#include <linux/wakelock.h>
+
+/*=============================================================*/
+// 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;
+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
+
+struct wake_lock mstar_irq_lock;
+
+#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)
+{
+// const char *vdd_name = "vdd";
+ struct msg2138_ts_platform_data *pdata = client->dev.platform_data;
+ int err = 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;
+
+#ifdef CONFIG_ENABLE_REGULATOR_POWER_ON
+ g_ReguVdd = regulator_get(&g_I2cClient->dev, pdata->vdd_name);
+#endif //CONFIG_ENABLE_REGULATOR_POWER_ON
+
+
+ wake_lock_init(&mstar_irq_lock, WAKE_LOCK_SUSPEND, "mstar_irq_lock");
+
+ 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, 0}, //SLAVE_I2C_ID_DWI2C
+ {}, /* should not omitted */
+};
+
+MODULE_DEVICE_TABLE(i2c, touch_device_id);
+
+static const struct of_device_id msg2xxx_of_match[] = {
+ { .compatible = "msg2xxx,msg2233", },
+ { } +};
+
+static struct i2c_driver touch_device_driver =
+{
+ .driver = {
+ .name = MSG_TP_IC_NAME,
+ .owner = THIS_MODULE, + .of_match_table = msg2xxx_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");
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