goodix_brl_mmi: Add mmi status check.

TP:
1. Add "mmi,status" check to goodix driver's probe.
2. Add touch pinctrl settings.

Change-Id: I34581d199a80c4e03cd0e94332ca5cd8ad6d87e4
Reviewed-on: https://gerrit.mot.com/2053118
SLTApproved: Slta Waiver
SME-Granted: SME Approvals Granted
Tested-by: Jira Key
Reviewed-by: Jichao Zou <zoujc@motorola.com>
Submit-Approved: Jira Key

drivers/input/touchscreen/goodix_berlin_mmi/Android.mk

@@ -5,4 +5,6 @@ include $(CLEAR_VARS)
 LOCAL_MODULE := goodix_brl_mmi.ko
 LOCAL_MODULE_TAGS := optional
 LOCAL_MODULE_PATH := $(KERNEL_MODULES_OUT)
+LOCAL_ADDITIONAL_DEPENDENCIES += $(KERNEL_MODULES_OUT)/mmi_info.ko
+KBUILD_OPTIONS_GKI += GKI_OBJ_MODULE_DIR=gki
 include $(DLKM_DIR)/AndroidKernelModule.mk

drivers/input/touchscreen/goodix_berlin_mmi/Makefile

@@ -12,3 +12,5 @@ modules_install:
 clean:
 	rm -f *.o *.ko *.mod.c *.mod.o *~ .*.cmd Module.symvers
 	rm -rf .tmp_versions
+
+KBUILD_EXTRA_SYMBOLS += $(M)/../../../mmi_info/$(GKI_OBJ_MODULE_DIR)/Module.symvers

drivers/input/touchscreen/goodix_berlin_mmi/goodix_brl_i2c.c

@@ -19,6 +19,7 @@
 #include <linux/i2c.h>
 
 #include "goodix_ts_core.h"
+#include <linux/mmi_device.h>
 
 #define TS_DRIVER_NAME				"gtx8_i2c"
 #define I2C_MAX_TRANSFER_SIZE		60
@@ -169,6 +170,12 @@ static int goodix_i2c_probe(struct i2c_client *client,
 	int ret = 0;
 
 	ts_info("goodix i2c probe in");
+
+	if (client->dev.of_node && !mmi_device_is_available(client->dev.of_node)) {
+		ts_err("mmi: device not supported\n");
+		return -ENODEV;
+	}
+
 	ret = i2c_check_functionality(client->adapter,
 		I2C_FUNC_I2C);
 	if (!ret)

drivers/input/touchscreen/goodix_berlin_mmi/goodix_ts_core.c

@@ -27,6 +27,8 @@
 
 #include "goodix_ts_core.h"
 
+#define PINCTRL_STATE_ACTIVE    "pmx_ts_active"
+#define PINCTRL_STATE_SUSPEND   "pmx_ts_suspend"
 #define GOODIX_DEFAULT_CFG_NAME 	"goodix_cfg_group.cfg"
 #define GOOIDX_INPUT_PHYS			"goodix_ts/input0"
 
@@ -1348,6 +1350,54 @@ int goodix_ts_power_off(struct goodix_ts_core *cd)
 	return ret;
 }
 
+/**
+ * goodix_ts_pinctrl_init - Get pinctrl handler and pinctrl_state
+ * @core_data: pointer to touch core data
+ * return: 0 ok, <0 failed
+ */
+static int goodix_ts_pinctrl_init(struct goodix_ts_core *core_data)
+{
+	int r = 0;
+
+	/* get pinctrl handler from of node */
+	core_data->pinctrl = devm_pinctrl_get(core_data->bus->dev);
+	if (IS_ERR_OR_NULL(core_data->pinctrl)) {
+		ts_info("Failed to get pinctrl handler[need confirm]");
+		core_data->pinctrl = NULL;
+		return -EINVAL;
+	}
+	ts_debug("success get pinctrl");
+	/* active state */
+	core_data->pin_sta_active = pinctrl_lookup_state(core_data->pinctrl,
+				PINCTRL_STATE_ACTIVE);
+	if (IS_ERR_OR_NULL(core_data->pin_sta_active)) {
+		r = PTR_ERR(core_data->pin_sta_active);
+		ts_err("Failed to get pinctrl state:%s, r:%d",
+				PINCTRL_STATE_ACTIVE, r);
+		core_data->pin_sta_active = NULL;
+		goto exit_pinctrl_put;
+	}
+	ts_debug("success get avtive pinctrl state");
+
+	/* suspend state */
+	core_data->pin_sta_suspend = pinctrl_lookup_state(core_data->pinctrl,
+				PINCTRL_STATE_SUSPEND);
+	if (IS_ERR_OR_NULL(core_data->pin_sta_suspend)) {
+		r = PTR_ERR(core_data->pin_sta_suspend);
+		ts_err("Failed to get pinctrl state:%s, r:%d",
+				PINCTRL_STATE_SUSPEND, r);
+		core_data->pin_sta_suspend = NULL;
+		goto exit_pinctrl_put;
+	}
+	ts_debug("success get suspend pinctrl state");
+
+	return 0;
+exit_pinctrl_put:
+	devm_pinctrl_put(core_data->pinctrl);
+	core_data->pinctrl = NULL;
+	return r;
+}
+
 /**
  * goodix_ts_gpio_setup - Request gpio resources from GPIO subsysten
  * @core_data: pointer to touch core data
@@ -2151,6 +2201,15 @@ static int goodix_ts_probe(struct platform_device *pdev)
 		goto err_out;
 	}
 
+	/* Pinctrl handle is optional. */
+	ret = goodix_ts_pinctrl_init(core_data);
+	if (!ret && core_data->pinctrl) {
+		ret = pinctrl_select_state(core_data->pinctrl,
+					 core_data->pin_sta_active);
+		if (ret < 0)
+			ts_err("Failed to select active pinstate, r:%d", ret);
+	}
+
 	/* confirm it's goodix touch dev or not */
 	ret = core_data->hw_ops->dev_confirm(core_data);
 	if (ret) {

drivers/input/touchscreen/goodix_berlin_mmi/goodix_ts_core.h

@@ -444,6 +444,10 @@ struct goodix_ts_core {
 	struct regulator *avdd;
 	struct regulator *iovdd;
 
+	struct pinctrl *pinctrl;
+	struct pinctrl_state *pin_sta_active;
+	struct pinctrl_state *pin_sta_suspend;
+
 	int power_on;
 	int irq;
 	size_t irq_trig_cnt;