From 05ccf7d2787ab77e18a20d032e826b41b61880ad Mon Sep 17 00:00:00 2001
From: osaisruj <osaisruj@codeaurora.org>
Date: Fri, 29 Oct 2021 01:33:47 +0530
Subject: [PATCH] disp: msm: sde: add twm mode sysfs mode

Add sysfs node on connector to get twm enable
state. This node is used by the HAL to notify TWM
entry and exit.

Change-Id: I56a844076014c2e12075756f6b1bc42b91b48ad1
Signed-off-by: osaisruj <osaisruj@codeaurora.org>
---
 msm/sde/sde_connector.c | 37 +++++++++++++++++++++++++++++++++++++
 msm/sde/sde_connector.h |  2 ++
 2 files changed, 39 insertions(+)

diff --git a/msm/sde/sde_connector.c b/msm/sde/sde_connector.c
index 6c6a5a6e3585..fdd72a459363 100644
--- a/msm/sde/sde_connector.c
+++ b/msm/sde/sde_connector.c
@@ -2860,10 +2860,46 @@ static ssize_t panel_power_state_show(struct device *device,
 	return scnprintf(buf, PAGE_SIZE, "%d\n", sde_conn->last_panel_power_mode);
 }
 
+static ssize_t twm_enable_store(struct device *device,
+	struct device_attribute *attr, const char *buf, size_t count)
+{
+	struct drm_connector *conn;
+	struct sde_connector *sde_conn;
+	int rc;
+	int data;
+
+	conn = dev_get_drvdata(device);
+	sde_conn = to_sde_connector(conn);
+
+	rc = kstrtoint(buf, 10, &data);
+	if (rc) {
+		SDE_ERROR("kstrtoint failed, rc =%d\n", rc);
+		return -EINVAL;
+	}
+	sde_conn->twm_en = data ? true : false;
+	SDE_DEBUG("TWM: %s\n", sde_conn->twm_en ? "ENABLED" : "DISABLED");
+	return count;
+}
+
+static ssize_t twm_enable_show(struct device *device,
+	struct device_attribute *attr, char *buf)
+{
+	struct drm_connector *conn;
+	struct sde_connector *sde_conn;
+
+	conn = dev_get_drvdata(device);
+	sde_conn = to_sde_connector(conn);
+
+	SDE_DEBUG("TWM: %s\n", sde_conn->twm_en ? "ENABLED" : "DISABLED");
+	return scnprintf(buf, PAGE_SIZE, "%d\n", sde_conn->twm_en);
+}
+
 static DEVICE_ATTR_RO(panel_power_state);
+static DEVICE_ATTR_RW(twm_enable);
 
 static struct attribute *sde_connector_dev_attrs[] = {
 	&dev_attr_panel_power_state.attr,
+	&dev_attr_twm_enable.attr,
 	NULL
 };
 
@@ -2958,6 +2994,7 @@ struct drm_connector *sde_connector_init(struct drm_device *dev,
 	c_conn->dpms_mode = DRM_MODE_DPMS_ON;
 	c_conn->lp_mode = 0;
 	c_conn->last_panel_power_mode = SDE_MODE_DPMS_ON;
+	c_conn->twm_en = false;
 
 	sde_kms = to_sde_kms(priv->kms);
 	if (sde_kms->vbif[VBIF_NRT]) {
diff --git a/msm/sde/sde_connector.h b/msm/sde/sde_connector.h
index 3caa1fa60666..ecbbefbf8b60 100644
--- a/msm/sde/sde_connector.h
+++ b/msm/sde/sde_connector.h
@@ -470,6 +470,7 @@ struct sde_connector_dyn_hdr_metadata {
  * @esd_status_interval: variable to change ESD check interval in millisec
  * @panel_dead: Flag to indicate if panel has gone bad
  * @esd_status_check: Flag to indicate if ESD thread is scheduled or not
+ * @twm_en: Flag to indicate if TWM mode is enabled or not
  * @bl_scale_dirty: Flag to indicate PP BL scale value(s) is changed
  * @bl_scale: BL scale value for ABA feature
  * @bl_scale_sv: BL scale value for sunlight visibility feature
@@ -533,6 +534,7 @@ struct sde_connector {
 	u32 esd_status_interval;
 	bool panel_dead;
 	bool esd_status_check;
+	bool twm_en;
 
 	bool bl_scale_dirty;
 	u32 bl_scale;