input: ili9882_mmi: add pen notify and palm settings

ili9882_mmi:
- add pen notify for passive pen pull and plug
- add palm settings node for canvas
- add usb detection function

Change-Id: Idec5779bf1ff7ddc5d27cae13052b85f84bd9c19
Signed-off-by: wangyq13 <wangyq13@lenovo.com>
Reviewed-on: https://gerrit.mot.com/2396006
SME-Granted: SME Approvals Granted
SLTApproved: Slta Waiver
Tested-by: Jira Key
Reviewed-by: <lvxj4@motorola.com>
Reviewed-by: Jing Hu <hujing3@lenovo.com>
Reviewed-by: Huosheng Liao <liaohs@motorola.com>
Submit-Approved: Jira Key

drivers/input/touchscreen/ili9882_mmi/Android.mk

@@ -29,6 +29,10 @@ ifeq ($(ILITEK_SUSPEND_PWROFF),true)
 	KERNEL_CFLAGS += CONFIG_ILITEK_SUSPEND_PWROFF=y
 endif
 
+ifneq ($(BOARD_USES_PEN_NOTIFIER),)
+	KBUILD_OPTIONS += CONFIG_INPUT_ILITEK_MMI_PEN_NOTIFIER=y
+endif
+
 ifeq ($(ILITEK_CHARGER),true)
 	KERNEL_CFLAGS += CONFIG_ILITEK_CHARGER=y
 endif
@@ -55,6 +59,9 @@ include $(CLEAR_VARS)
 ifneq ($(BOARD_USES_DOUBLE_TAP),)
 LOCAL_ADDITIONAL_DEPENDENCIES += $(KERNEL_MODULES_OUT)/sensors_class.ko
 endif
+ifneq ($(BOARD_USES_PEN_NOTIFIER),)
+LOCAL_ADDITIONAL_DEPENDENCIES += $(KERNEL_MODULES_OUT)/bu520xx_pen.ko
+endif
 LOCAL_MODULE := ili9882_mmi.ko
 LOCAL_MODULE_TAGS := optional
 LOCAL_MODULE_PATH := $(KERNEL_MODULES_OUT)

drivers/input/touchscreen/ili9882_mmi/Kbuild

@@ -39,6 +39,11 @@ ifneq ($(filter m y,$(CONFIG_ILITEK_GESTURE)),)
 EXTRA_CFLAGS += -DILI_CONFIG_GESTURE
 endif
 
+ifneq ($(filter m y,$(CONFIG_INPUT_ILITEK_MMI_PEN_NOTIFIER)),)
+	KBUILD_EXTRA_SYMBOLS += $(CURDIR)/$(KBUILD_EXTMOD)/../../../misc/pen/$(GKI_OBJ_MODULE_DIR)/Module.symvers
+	EXTRA_CFLAGS += -DILITEK_PEN_NOTIFIER
+endif
+
 ifneq ($(filter m y,$(CONFIG_ILITEK_PANEL_GESTURE)),)
 EXTRA_CFLAGS += -DILI_CONFIG_PANEL_GESTURE
 endif

drivers/input/touchscreen/ili9882_mmi/Makefile

@@ -15,4 +15,4 @@ clean:
 
 KBUILD_EXTRA_SYMBOLS += $(M)/../../../mmi_info/$(GKI_OBJ_MODULE_DIR)/Module.symvers
 KBUILD_EXTRA_SYMBOLS += $(M)/../touchscreen_mmi/$(GKI_OBJ_MODULE_DIR)/Module.symvers
-
+KBUILD_EXTRA_SYMBOLS += $(M)/../../../misc/pen/$(GKI_OBJ_MODULE_DIR)/Module.symvers

drivers/input/touchscreen/ili9882_mmi/ili9882.h

@@ -119,6 +119,10 @@
 #include <linux/touchscreen_mmi.h>
 #endif
 
+#ifdef ILITEK_PEN_NOTIFIER
+#include <linux/pen_detection_notify.h>
+#endif
+
 #define DRIVER_VERSION			"3.0.3.0.200610"
 
 /* Options */
@@ -935,6 +939,10 @@ struct ilitek_ts_data {
 	int gesture_demo_ctrl;
 	struct gesture_symbol ges_sym;
 	struct report_info_block rib;
+	int canvas_value;
+#ifdef ILITEK_PEN_NOTIFIER
+	struct notifier_block pen_notif;
+#endif
 
 	u16 flash_mid;
 	u16 flash_devid;

drivers/input/touchscreen/ili9882_mmi/ili9882_node.c

@@ -111,8 +111,10 @@ static unsigned char g_user_buf[USER_STR_BUFF] = {0};
 #define ILI_SPI_NAME_TM "ilitek_tm"
 #define ILI_SPI_NAME_CSOT "ilitek_csot"
 #define ILI_SPI_NAME_TXD "ilitek_txd"
+#ifndef CONFIG_INPUT_TOUCHSCREEN_MMI
 static struct class *touchscreen_class;
 static struct device *touchscreen_class_dev;
+#endif
 
 int ili_str2hex(char *str)
 {
@@ -2705,6 +2707,7 @@ static int netlink_init(void)
 	return ret;
 }
 
+#ifndef CONFIG_INPUT_TOUCHSCREEN_MMI
 static ssize_t path_show(struct device *pDevice, struct device_attribute *pAttr, char *pBuf)
 {
 	ssize_t blen;
@@ -2802,6 +2805,7 @@ device_destroy:
 
 	return -ENODEV;
 }
+#endif
 
 void ili_node_init(void)
 {
@@ -2822,5 +2826,7 @@ void ili_node_init(void)
 		}
 	}
 	netlink_init();
+#ifndef CONFIG_INPUT_TOUCHSCREEN_MMI
 	ilitek_sys_init();
+#endif
 }

drivers/input/touchscreen/ili9882_mmi/ili9882_spi.c

@@ -608,6 +608,20 @@ static int parse_dt(struct device_node *np)
 }
 #endif
 
+#ifdef ILITEK_PEN_NOTIFIER
+static int pen_notifier_callback(struct notifier_block *self,
+				unsigned long event, void *data)
+{
+	ILI_INFO("Received event(%lu) for pen detection\n", event);
+
+	mutex_lock(&ilits->touch_mutex);
+	ili_ic_func_ctrl("passive_pen", event);
+	mutex_unlock(&ilits->touch_mutex);
+
+    	return 0;
+}
+#endif
+
 static int ilitek_spi_probe(struct spi_device *spi)
 {
 	struct touch_bus_info *info =
@@ -782,6 +796,11 @@ static int ilitek_spi_probe(struct spi_device *spi)
 	if (ili_core_spi_setup(SPI_CLK) < 0)
 		return -EINVAL;
 
+#ifdef ILITEK_PEN_NOTIFIER
+	ilits->pen_notif.notifier_call = pen_notifier_callback;
+	pen_detection_register_client(&ilits->pen_notif);
+#endif
+
 #ifdef CONFIG_INPUT_TOUCHSCREEN_MMI
 	ili_mmi_init(ilits, true);
 #endif

drivers/input/touchscreen/ili9882_mmi/ili_mmi_class.c

@@ -71,9 +71,84 @@ static int ili_mmi_methods_drv_irq(struct device *dev, int state)
 
 static int ili_mmi_charger_mode(struct device *dev, int mode)
 {
+	int ret = 0;
+	mutex_lock(&ilits->touch_mutex);
+	ret = ili_ic_func_ctrl("plug", mode);
+	if(ret<0) {
+		ILI_ERR("Write plug in failed\n");
+	}
+	ILI_INFO("%s: %d\n", __func__, mode);
+	mutex_unlock(&ilits->touch_mutex);
+
 	return 0;
 }
 
+#define MAX_ATTRS_ENTRIES 10
+#define ADD_ATTR(name) { \
+	if (idx < MAX_ATTRS_ENTRIES)  { \
+		dev_info(dev, "%s: [%d] adding %p\n", __func__, idx, &dev_attr_##name.attr); \
+		ext_attributes[idx] = &dev_attr_##name.attr; \
+		idx++; \
+	} else { \
+		dev_err(dev, "%s: cannot add attribute '%s'\n", __func__, #name); \
+	} \
+}
+
+static struct attribute *ext_attributes[MAX_ATTRS_ENTRIES];
+static struct attribute_group ext_attr_group = {
+	.attrs = ext_attributes,
+};
+
+static ssize_t ili_palm_settings_show(struct device *dev,
+	struct device_attribute *attr, char *buf)
+{
+	return scnprintf(buf, PAGE_SIZE, "%d", ilits->canvas_value);
+}
+
+static ssize_t ili_palm_settings_store(struct device *dev,
+	struct device_attribute *attr, const char *buf, size_t count)
+
+{
+	int value;
+	int err = 0;
+
+	mutex_lock(&ilits->touch_mutex);
+	if (count > 2)
+		return -EINVAL;
+
+	if (sscanf(buf, "%d", &value) != 1)
+		return -EINVAL;
+
+	err = count;
+
+	if (ili_ic_func_ctrl("canvas", value) < 0)
+		ILI_ERR("Write canvas enable fail\n");
+	else
+		ilits->canvas_value = value;
+	ILI_INFO("%s: %d\n", __func__, ilits->canvas_value);
+	mutex_unlock(&ilits->touch_mutex);
+
+	return err;
+}
+
+static DEVICE_ATTR(palm_settings, S_IRUGO | S_IWUSR | S_IWGRP, ili_palm_settings_show, ili_palm_settings_store);
+
+static int ili_mmi_extend_attribute_group(struct device *dev, struct attribute_group **group)
+{
+	int idx = 0;
+
+	ADD_ATTR(palm_settings);
+
+	if (idx) {
+		ext_attributes[idx] = NULL;
+		*group = &ext_attr_group;
+	} else
+		*group = NULL;
+
+	return 0;
+}
+
+
 static int ili_mmi_methods_reset(struct device *dev, int type)
 {
 	return 0;
@@ -122,6 +197,7 @@ static struct ts_mmi_methods ili_mmi_methods = {
 	.charger_mode = ili_mmi_charger_mode,
 	/* Firmware */
 	.firmware_update = ili_mmi_firmware_update,
+	.extend_attribute_group = ili_mmi_extend_attribute_group,
 	/* PM callback */
 	.pre_resume = ili_mmi_pre_resume,
 	.post_resume = ili_mmi_post_resume,