Merge "disp: msm: add support for twm entry"

msm/dsi/dsi_panel.c

@@ -378,6 +378,10 @@ static int dsi_panel_power_off(struct dsi_panel *panel)
 {
 	int rc = 0;
 
+	if (panel->is_twm_en) {
+		DSI_DEBUG("TWM Enabled, skip panel power off\n");
+		return rc;
+	}
 	if (gpio_is_valid(panel->reset_config.disp_en_gpio))
 		gpio_set_value(panel->reset_config.disp_en_gpio, 0);
 
@@ -4305,6 +4309,10 @@ int dsi_panel_set_nolp(struct dsi_panel *panel)
 		return -EINVAL;
 	}
 
+	if (panel->is_twm_en) {
+		DSI_DEBUG("TWM Enabled, skip idle off\n");
+		return rc;
+	}
 	mutex_lock(&panel->panel_lock);
 	if (!panel->panel_initialized)
 		goto exit;
@@ -4717,6 +4725,10 @@ int dsi_panel_disable(struct dsi_panel *panel)
 		return -EINVAL;
 	}
 
+	if (panel->is_twm_en) {
+		DSI_DEBUG("TWM Enabled, skip panel disable\n");
+		return rc;
+	}
 	mutex_lock(&panel->panel_lock);
 
 	/* Avoid sending panel off commands when ESD recovery is underway */

msm/dsi/dsi_panel.h

@@ -1,6 +1,6 @@
 /* SPDX-License-Identifier: GPL-2.0-only */
 /*
- * Copyright (c) 2016-2020, The Linux Foundation. All rights reserved.
+ * Copyright (c) 2016-2020, 2021 The Linux Foundation. All rights reserved.
  */
 
 #ifndef _DSI_PANEL_H_
@@ -244,6 +244,7 @@ struct dsi_panel {
 	bool reset_gpio_always_on;
 	atomic_t esd_recovery_pending;
 
+	bool is_twm_en;
 	bool panel_initialized;
 	bool te_using_watchdog_timer;
 	struct dsi_qsync_capabilities qsync_caps;

msm/sde/sde_connector.c

@@ -1026,6 +1026,9 @@ void sde_connector_destroy(struct drm_connector *connector)
 
 	c_conn = to_sde_connector(connector);
 
+	if (c_conn->sysfs_dev)
+		device_unregister(c_conn->sysfs_dev);
+
 	/* cancel if any pending esd work */
 	sde_connector_schedule_status_work(connector, false);
 
@@ -2845,6 +2848,104 @@ static int _sde_connector_install_properties(struct drm_device *dev,
 	return 0;
 }
 
+static ssize_t panel_power_state_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);
+
+	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;
+	struct dsi_display *dsi_display;
+	int rc;
+	int data;
+
+	conn = dev_get_drvdata(device);
+	sde_conn = to_sde_connector(conn);
+	dsi_display = (struct dsi_display *) sde_conn->display;
+	rc = kstrtoint(buf, 10, &data);
+	if (rc) {
+		SDE_ERROR("kstrtoint failed, rc = %d\n", rc);
+		return -EINVAL;
+	}
+	sde_conn->twm_en = data ? true : false;
+	dsi_display->panel->is_twm_en = sde_conn->twm_en;
+	sde_conn->allow_bl_update = data ? false : true;
+	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
+};
+
+static const struct attribute_group sde_connector_attr_group = {
+	.attrs = sde_connector_dev_attrs,
+};
+static const struct attribute_group *sde_connector_attr_groups[] = {
+	&sde_connector_attr_group,
+	NULL,
+};
+
+int sde_connector_post_init(struct drm_device *dev, struct drm_connector *conn)
+{
+	struct sde_connector *c_conn;
+	int rc = 0;
+
+	if (!dev || !dev->primary || !dev->primary->kdev || !conn) {
+		SDE_ERROR("invalid input param(s)\n");
+		rc = -EINVAL;
+		return rc;
+	}
+
+	c_conn =  to_sde_connector(conn);
+
+	if (conn->connector_type != DRM_MODE_CONNECTOR_DSI)
+		return rc;
+
+	c_conn->sysfs_dev =
+		device_create_with_groups(dev->primary->kdev->class, dev->primary->kdev, 0,
+			conn, sde_connector_attr_groups, "sde-conn-%d-%s", conn->index,
+			conn->name);
+	if (IS_ERR_OR_NULL(c_conn->sysfs_dev)) {
+		SDE_ERROR("connector:%d sysfs create failed rc:%ld\n", &c_conn->base.index,
+			PTR_ERR(c_conn->sysfs_dev));
+		if (!c_conn->sysfs_dev)
+			rc = -EINVAL;
+		else
+			rc = PTR_ERR(c_conn->sysfs_dev);
+	}
+
+	return rc;
+}
+
 struct drm_connector *sde_connector_init(struct drm_device *dev,
 		struct drm_encoder *encoder,
 		struct drm_panel *panel,
@@ -2896,6 +2997,7 @@ 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]) {

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
@@ -511,6 +512,7 @@ struct sde_connector {
 	int dpms_mode;
 	int lp_mode;
 	int last_panel_power_mode;
+	struct device *sysfs_dev;
 
 	struct msm_property_info property_info;
 	struct msm_property_data property_data[CONNECTOR_PROP_COUNT];
@@ -532,6 +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;
@@ -753,6 +756,15 @@ int sde_connector_set_property_for_commit(struct drm_connector *connector,
 		struct drm_atomic_state *atomic_state,
 		uint32_t property_idx, uint64_t value);
 
+/**
+ * sde_connector_post_init - update connector object with post initialization.
+ * It can update the debugfs, sysfs, entries
+ * @dev: Pointer to drm device struct
+ * @conn: Pointer to drm connector
+ * Returns: Zero on success
+ */
+int sde_connector_post_init(struct drm_device *dev, struct drm_connector *conn);
+
 /**
  * sde_connector_init - create drm connector object for a given display
  * @dev: Pointer to drm device struct

msm/sde/sde_kms.c

@@ -2176,6 +2176,8 @@ static int sde_kms_postinit(struct msm_kms *kms)
 	struct sde_kms *sde_kms = to_sde_kms(kms);
 	struct drm_device *dev;
 	struct drm_crtc *crtc;
+	struct drm_connector *conn;
+	struct drm_connector_list_iter conn_iter;
 	int rc;
 
 	if (!sde_kms || !sde_kms->dev || !sde_kms->dev->dev) {
@@ -2192,6 +2194,10 @@ static int sde_kms_postinit(struct msm_kms *kms)
 	drm_for_each_crtc(crtc, dev)
 		sde_crtc_post_init(dev, crtc);
 
+	drm_connector_list_iter_begin(dev, &conn_iter);
+	drm_for_each_connector_iter(conn, &conn_iter)
+		sde_connector_post_init(dev, conn);
+	drm_connector_list_iter_end(&conn_iter);
 	return rc;
 }