Merge branch 'for-next' of git://people.freedesktop.org/~seanpaul/dogwood into drm-next

This pull request contains the following rockchip drm changes:

  - Introduce support for rk3399 vop/crtc
  - Add PSR framework to the rockchip driver
  - Implement PSR in the rockchip analogix edp driver
  - Fix panel on/off in analogix to avoid damaging panels
  - Some miscellaneous fixes to clean up logs and code readability

* 'for-next' of git://people.freedesktop.org/~seanpaul/dogwood:
  drm/rockchip: analogix_dp: drop unnecessary probe deferral "error" print
  drm/rockchip: Enable vblank without event
  drm/rockchip: Improve analogix-dp psr handling
  drm/rockchip: A couple small fixes to psr
  drm/rockchip: Use a spinlock to protect psr state
  drm/rockchip: Don't use a delayed worker for psr state changes
  drm/rockchip: Convert psr_list_mutex to spinlock and use it
  drm/rockchip: analogix_dp: implement PSR function
  drm/bridge: analogix_dp: add the PSR function support
  drm/rockchip: add an common abstracted PSR driver
  drm/rockchip: vop: export line flag function
  drm/bridge: analogix_dp: Ensure the panel is properly prepared/unprepared
  dt-bindings: add compatible strings for big/little rockchip vops
  dt-bindings: sort Rockchip vop compatible by chip's number
  drm/rockchip: vop: add rk3399 vop support
  drm/rockchip: vop: introduce VOP_REG_MASK
  drm/rockchip: sort registers define by chip's number

Documentation/devicetree/bindings/display/rockchip/rockchip-vop.txt

@@ -6,8 +6,10 @@ buffer to an external LCD interface.
 
 Required properties:
 - compatible: value should be one of the following
-		"rockchip,rk3288-vop";
 		"rockchip,rk3036-vop";
+		"rockchip,rk3288-vop";
+		"rockchip,rk3399-vop-big";
+		"rockchip,rk3399-vop-lit";
 
 - interrupts: should contain a list of all VOP IP block interrupts in the
 		 order: VSYNC, LCD_SYSTEM. The interrupt specifier

drivers/gpu/drm/bridge/analogix/analogix_dp_core.c

@@ -97,6 +97,83 @@ static int analogix_dp_detect_hpd(struct analogix_dp_device *dp)
 	return 0;
 }
 
+int analogix_dp_enable_psr(struct device *dev)
+{
+	struct analogix_dp_device *dp = dev_get_drvdata(dev);
+	struct edp_vsc_psr psr_vsc;
+
+	if (!dp->psr_support)
+		return -EINVAL;
+
+	/* Prepare VSC packet as per EDP 1.4 spec, Table 6.9 */
+	memset(&psr_vsc, 0, sizeof(psr_vsc));
+	psr_vsc.sdp_header.HB0 = 0;
+	psr_vsc.sdp_header.HB1 = 0x7;
+	psr_vsc.sdp_header.HB2 = 0x2;
+	psr_vsc.sdp_header.HB3 = 0x8;
+
+	psr_vsc.DB0 = 0;
+	psr_vsc.DB1 = EDP_VSC_PSR_STATE_ACTIVE | EDP_VSC_PSR_CRC_VALUES_VALID;
+
+	analogix_dp_send_psr_spd(dp, &psr_vsc);
+	return 0;
+}
+EXPORT_SYMBOL_GPL(analogix_dp_enable_psr);
+
+int analogix_dp_disable_psr(struct device *dev)
+{
+	struct analogix_dp_device *dp = dev_get_drvdata(dev);
+	struct edp_vsc_psr psr_vsc;
+
+	if (!dp->psr_support)
+		return -EINVAL;
+
+	/* Prepare VSC packet as per EDP 1.4 spec, Table 6.9 */
+	memset(&psr_vsc, 0, sizeof(psr_vsc));
+	psr_vsc.sdp_header.HB0 = 0;
+	psr_vsc.sdp_header.HB1 = 0x7;
+	psr_vsc.sdp_header.HB2 = 0x2;
+	psr_vsc.sdp_header.HB3 = 0x8;
+
+	psr_vsc.DB0 = 0;
+	psr_vsc.DB1 = 0;
+
+	analogix_dp_send_psr_spd(dp, &psr_vsc);
+	return 0;
+}
+EXPORT_SYMBOL_GPL(analogix_dp_disable_psr);
+
+static bool analogix_dp_detect_sink_psr(struct analogix_dp_device *dp)
+{
+	unsigned char psr_version;
+
+	analogix_dp_read_byte_from_dpcd(dp, DP_PSR_SUPPORT, &psr_version);
+	dev_dbg(dp->dev, "Panel PSR version : %x\n", psr_version);
+
+	return (psr_version & DP_PSR_IS_SUPPORTED) ? true : false;
+}
+
+static void analogix_dp_enable_sink_psr(struct analogix_dp_device *dp)
+{
+	unsigned char psr_en;
+
+	/* Disable psr function */
+	analogix_dp_read_byte_from_dpcd(dp, DP_PSR_EN_CFG, &psr_en);
+	psr_en &= ~DP_PSR_ENABLE;
+	analogix_dp_write_byte_to_dpcd(dp, DP_PSR_EN_CFG, psr_en);
+
+	/* Main-Link transmitter remains active during PSR active states */
+	psr_en = DP_PSR_MAIN_LINK_ACTIVE | DP_PSR_CRC_VERIFICATION;
+	analogix_dp_write_byte_to_dpcd(dp, DP_PSR_EN_CFG, psr_en);
+
+	/* Enable psr function */
+	psr_en = DP_PSR_ENABLE | DP_PSR_MAIN_LINK_ACTIVE |
+		 DP_PSR_CRC_VERIFICATION;
+	analogix_dp_write_byte_to_dpcd(dp, DP_PSR_EN_CFG, psr_en);
+
+	analogix_dp_enable_psr_crc(dp);
+}
+
 static unsigned char analogix_dp_calc_edid_check_sum(unsigned char *edid_data)
 {
 	int i;
@@ -921,13 +998,69 @@ static void analogix_dp_commit(struct analogix_dp_device *dp)
 
 	/* Enable video */
 	analogix_dp_start_video(dp);
+
+	dp->psr_support = analogix_dp_detect_sink_psr(dp);
+	if (dp->psr_support)
+		analogix_dp_enable_sink_psr(dp);
+}
+
+/*
+ * This function is a bit of a catch-all for panel preparation, hopefully
+ * simplifying the logic of functions that need to prepare/unprepare the panel
+ * below.
+ *
+ * If @prepare is true, this function will prepare the panel. Conversely, if it
+ * is false, the panel will be unprepared.
+ *
+ * If @is_modeset_prepare is true, the function will disregard the current state
+ * of the panel and either prepare/unprepare the panel based on @prepare. Once
+ * it finishes, it will update dp->panel_is_modeset to reflect the current state
+ * of the panel.
+ */
+static int analogix_dp_prepare_panel(struct analogix_dp_device *dp,
+				     bool prepare, bool is_modeset_prepare)
+{
+	int ret = 0;
+
+	if (!dp->plat_data->panel)
+		return 0;
+
+	mutex_lock(&dp->panel_lock);
+
+	/*
+	 * Exit early if this is a temporary prepare/unprepare and we're already
+	 * modeset (since we neither want to prepare twice or unprepare early).
+	 */
+	if (dp->panel_is_modeset && !is_modeset_prepare)
+		goto out;
+
+	if (prepare)
+		ret = drm_panel_prepare(dp->plat_data->panel);
+	else
+		ret = drm_panel_unprepare(dp->plat_data->panel);
+
+	if (ret)
+		goto out;
+
+	if (is_modeset_prepare)
+		dp->panel_is_modeset = prepare;
+
+out:
+	mutex_unlock(&dp->panel_lock);
+	return ret;
 }
 
 int analogix_dp_get_modes(struct drm_connector *connector)
 {
 	struct analogix_dp_device *dp = to_dp(connector);
 	struct edid *edid = (struct edid *)dp->edid;
-	int num_modes = 0;
+	int ret, num_modes = 0;
+
+	ret = analogix_dp_prepare_panel(dp, true, false);
+	if (ret) {
+		DRM_ERROR("Failed to prepare panel (%d)\n", ret);
+		return 0;
+	}
 
 	if (analogix_dp_handle_edid(dp) == 0) {
 		drm_mode_connector_update_edid_property(&dp->connector, edid);
@@ -940,6 +1073,10 @@ int analogix_dp_get_modes(struct drm_connector *connector)
 	if (dp->plat_data->get_modes)
 		num_modes += dp->plat_data->get_modes(dp->plat_data, connector);
 
+	ret = analogix_dp_prepare_panel(dp, false, false);
+	if (ret)
+		DRM_ERROR("Failed to unprepare panel (%d)\n", ret);
+
 	return num_modes;
 }
 
@@ -960,11 +1097,23 @@ enum drm_connector_status
 analogix_dp_detect(struct drm_connector *connector, bool force)
 {
 	struct analogix_dp_device *dp = to_dp(connector);
+	enum drm_connector_status status = connector_status_disconnected;
+	int ret;
 
-	if (analogix_dp_detect_hpd(dp))
+	ret = analogix_dp_prepare_panel(dp, true, false);
+	if (ret) {
+		DRM_ERROR("Failed to prepare panel (%d)\n", ret);
 		return connector_status_disconnected;
+	}
+
+	if (!analogix_dp_detect_hpd(dp))
+		status = connector_status_connected;
 
-	return connector_status_connected;
+	ret = analogix_dp_prepare_panel(dp, false, false);
+	if (ret)
+		DRM_ERROR("Failed to unprepare panel (%d)\n", ret);
+
+	return status;
 }
 
 static void analogix_dp_connector_destroy(struct drm_connector *connector)
@@ -1035,6 +1184,16 @@ static int analogix_dp_bridge_attach(struct drm_bridge *bridge)
 	return 0;
 }
 
+static void analogix_dp_bridge_pre_enable(struct drm_bridge *bridge)
+{
+	struct analogix_dp_device *dp = bridge->driver_private;
+	int ret;
+
+	ret = analogix_dp_prepare_panel(dp, true, true);
+	if (ret)
+		DRM_ERROR("failed to setup the panel ret = %d\n", ret);
+}
+
 static void analogix_dp_bridge_enable(struct drm_bridge *bridge)
 {
 	struct analogix_dp_device *dp = bridge->driver_private;
@@ -1058,6 +1217,7 @@ static void analogix_dp_bridge_enable(struct drm_bridge *bridge)
 static void analogix_dp_bridge_disable(struct drm_bridge *bridge)
 {
 	struct analogix_dp_device *dp = bridge->driver_private;
+	int ret;
 
 	if (dp->dpms_mode != DRM_MODE_DPMS_ON)
 		return;
@@ -1077,6 +1237,10 @@ static void analogix_dp_bridge_disable(struct drm_bridge *bridge)
 
 	pm_runtime_put_sync(dp->dev);
 
+	ret = analogix_dp_prepare_panel(dp, false, true);
+	if (ret)
+		DRM_ERROR("failed to setup the panel ret = %d\n", ret);
+
 	dp->dpms_mode = DRM_MODE_DPMS_OFF;
 }
 
@@ -1165,9 +1329,9 @@ static void analogix_dp_bridge_nop(struct drm_bridge *bridge)
 }
 
 static const struct drm_bridge_funcs analogix_dp_bridge_funcs = {
+	.pre_enable = analogix_dp_bridge_pre_enable,
 	.enable = analogix_dp_bridge_enable,
 	.disable = analogix_dp_bridge_disable,
-	.pre_enable = analogix_dp_bridge_nop,
 	.post_disable = analogix_dp_bridge_nop,
 	.mode_set = analogix_dp_bridge_mode_set,
 	.attach = analogix_dp_bridge_attach,
@@ -1254,6 +1418,9 @@ int analogix_dp_bind(struct device *dev, struct drm_device *drm_dev,
 	dp->dev = &pdev->dev;
 	dp->dpms_mode = DRM_MODE_DPMS_OFF;
 
+	mutex_init(&dp->panel_lock);
+	dp->panel_is_modeset = false;
+
 	/*
 	 * platform dp driver need containor_of the plat_data to get
 	 * the driver private data, so we need to store the point of
@@ -1333,13 +1500,6 @@ int analogix_dp_bind(struct device *dev, struct drm_device *drm_dev,
 
 	phy_power_on(dp->phy);
 
-	if (dp->plat_data->panel) {
-		if (drm_panel_prepare(dp->plat_data->panel)) {
-			DRM_ERROR("failed to setup the panel\n");
-			return -EBUSY;
-		}
-	}
-
 	analogix_dp_init_dp(dp);
 
 	ret = devm_request_threaded_irq(&pdev->dev, dp->irq,

drivers/gpu/drm/bridge/analogix/analogix_dp_core.h

@@ -177,6 +177,10 @@ struct analogix_dp_device {
 	int			hpd_gpio;
 	bool                    force_hpd;
 	unsigned char           edid[EDID_BLOCK_LENGTH * 2];
+	bool			psr_support;
+
+	struct mutex		panel_lock;
+	bool			panel_is_modeset;
 
 	struct analogix_dp_plat_data *plat_data;
 };
@@ -278,4 +282,8 @@ int analogix_dp_is_video_stream_on(struct analogix_dp_device *dp);
 void analogix_dp_config_video_slave_mode(struct analogix_dp_device *dp);
 void analogix_dp_enable_scrambling(struct analogix_dp_device *dp);
 void analogix_dp_disable_scrambling(struct analogix_dp_device *dp);
+void analogix_dp_enable_psr_crc(struct analogix_dp_device *dp);
+void analogix_dp_send_psr_spd(struct analogix_dp_device *dp,
+			      struct edp_vsc_psr *vsc);
+
 #endif /* _ANALOGIX_DP_CORE_H */

drivers/gpu/drm/bridge/analogix/analogix_dp_reg.c

@@ -1322,3 +1322,54 @@ void analogix_dp_disable_scrambling(struct analogix_dp_device *dp)
 	reg |= SCRAMBLING_DISABLE;
 	writel(reg, dp->reg_base + ANALOGIX_DP_TRAINING_PTN_SET);
 }
+
+void analogix_dp_enable_psr_crc(struct analogix_dp_device *dp)
+{
+	writel(PSR_VID_CRC_ENABLE, dp->reg_base + ANALOGIX_DP_CRC_CON);
+}
+
+void analogix_dp_send_psr_spd(struct analogix_dp_device *dp,
+			      struct edp_vsc_psr *vsc)
+{
+	unsigned int val;
+
+	/* don't send info frame */
+	val = readl(dp->reg_base + ANALOGIX_DP_PKT_SEND_CTL);
+	val &= ~IF_EN;
+	writel(val, dp->reg_base + ANALOGIX_DP_PKT_SEND_CTL);
+
+	/* configure single frame update mode */
+	writel(PSR_FRAME_UP_TYPE_BURST | PSR_CRC_SEL_HARDWARE,
+	       dp->reg_base + ANALOGIX_DP_PSR_FRAME_UPDATE_CTRL);
+
+	/* configure VSC HB0~HB3 */
+	writel(vsc->sdp_header.HB0, dp->reg_base + ANALOGIX_DP_SPD_HB0);
+	writel(vsc->sdp_header.HB1, dp->reg_base + ANALOGIX_DP_SPD_HB1);
+	writel(vsc->sdp_header.HB2, dp->reg_base + ANALOGIX_DP_SPD_HB2);
+	writel(vsc->sdp_header.HB3, dp->reg_base + ANALOGIX_DP_SPD_HB3);
+
+	/* configure reused VSC PB0~PB3, magic number from vendor */
+	writel(0x00, dp->reg_base + ANALOGIX_DP_SPD_PB0);
+	writel(0x16, dp->reg_base + ANALOGIX_DP_SPD_PB1);
+	writel(0xCE, dp->reg_base + ANALOGIX_DP_SPD_PB2);
+	writel(0x5D, dp->reg_base + ANALOGIX_DP_SPD_PB3);
+
+	/* configure DB0 / DB1 values */
+	writel(vsc->DB0, dp->reg_base + ANALOGIX_DP_VSC_SHADOW_DB0);
+	writel(vsc->DB1, dp->reg_base + ANALOGIX_DP_VSC_SHADOW_DB1);
+
+	/* set reuse spd inforframe */
+	val = readl(dp->reg_base + ANALOGIX_DP_VIDEO_CTL_3);
+	val |= REUSE_SPD_EN;
+	writel(val, dp->reg_base + ANALOGIX_DP_VIDEO_CTL_3);
+
+	/* mark info frame update */
+	val = readl(dp->reg_base + ANALOGIX_DP_PKT_SEND_CTL);
+	val = (val | IF_UP) & ~IF_EN;
+	writel(val, dp->reg_base + ANALOGIX_DP_PKT_SEND_CTL);
+
+	/* send info frame */
+	val = readl(dp->reg_base + ANALOGIX_DP_PKT_SEND_CTL);
+	val |= IF_EN;
+	writel(val, dp->reg_base + ANALOGIX_DP_PKT_SEND_CTL);
+}

drivers/gpu/drm/bridge/analogix/analogix_dp_reg.h

@@ -22,6 +22,8 @@
 #define ANALOGIX_DP_VIDEO_CTL_8			0x3C
 #define ANALOGIX_DP_VIDEO_CTL_10		0x44
 
+#define ANALOGIX_DP_SPDIF_AUDIO_CTL_0		0xD8
+
 #define ANALOGIX_DP_PLL_REG_1			0xfc
 #define ANALOGIX_DP_PLL_REG_2			0x9e4
 #define ANALOGIX_DP_PLL_REG_3			0x9e8
@@ -30,6 +32,21 @@
 
 #define ANALOGIX_DP_PD				0x12c
 
+#define ANALOGIX_DP_IF_TYPE			0x244
+#define ANALOGIX_DP_IF_PKT_DB1			0x254
+#define ANALOGIX_DP_IF_PKT_DB2			0x258
+#define ANALOGIX_DP_SPD_HB0			0x2F8
+#define ANALOGIX_DP_SPD_HB1			0x2FC
+#define ANALOGIX_DP_SPD_HB2			0x300
+#define ANALOGIX_DP_SPD_HB3			0x304
+#define ANALOGIX_DP_SPD_PB0			0x308
+#define ANALOGIX_DP_SPD_PB1			0x30C
+#define ANALOGIX_DP_SPD_PB2			0x310
+#define ANALOGIX_DP_SPD_PB3			0x314
+#define ANALOGIX_DP_PSR_FRAME_UPDATE_CTRL	0x318
+#define ANALOGIX_DP_VSC_SHADOW_DB0		0x31C
+#define ANALOGIX_DP_VSC_SHADOW_DB1		0x320
+
 #define ANALOGIX_DP_LANE_MAP			0x35C
 
 #define ANALOGIX_DP_ANALOG_CTL_1		0x370
@@ -103,6 +120,8 @@
 
 #define ANALOGIX_DP_SOC_GENERAL_CTL		0x800
 
+#define ANALOGIX_DP_CRC_CON			0x890
+
 /* ANALOGIX_DP_TX_SW_RESET */
 #define RESET_DP_TX				(0x1 << 0)
 
@@ -151,6 +170,7 @@
 #define VID_CHK_UPDATE_TYPE_SHIFT		(4)
 #define VID_CHK_UPDATE_TYPE_1			(0x1 << 4)
 #define VID_CHK_UPDATE_TYPE_0			(0x0 << 4)
+#define REUSE_SPD_EN				(0x1 << 3)
 
 /* ANALOGIX_DP_VIDEO_CTL_8 */
 #define VID_HRES_TH(x)				(((x) & 0xf) << 4)
@@ -167,6 +187,12 @@
 #define REF_CLK_27M				(0x0 << 0)
 #define REF_CLK_MASK				(0x1 << 0)
 
+/* ANALOGIX_DP_PSR_FRAME_UPDATE_CTRL */
+#define PSR_FRAME_UP_TYPE_BURST			(0x1 << 0)
+#define PSR_FRAME_UP_TYPE_SINGLE		(0x0 << 0)
+#define PSR_CRC_SEL_HARDWARE			(0x1 << 1)
+#define PSR_CRC_SEL_MANUALLY			(0x0 << 1)
+
 /* ANALOGIX_DP_LANE_MAP */
 #define LANE3_MAP_LOGIC_LANE_0			(0x0 << 6)
 #define LANE3_MAP_LOGIC_LANE_1			(0x1 << 6)
@@ -376,4 +402,12 @@
 #define VIDEO_MODE_SLAVE_MODE			(0x1 << 0)
 #define VIDEO_MODE_MASTER_MODE			(0x0 << 0)
 
+/* ANALOGIX_DP_PKT_SEND_CTL */
+#define IF_UP					(0x1 << 4)
+#define IF_EN					(0x1 << 0)
+
+/* ANALOGIX_DP_CRC_CON */
+#define PSR_VID_CRC_FLUSH			(0x1 << 2)
+#define PSR_VID_CRC_ENABLE			(0x1 << 0)
+
 #endif /* _ANALOGIX_DP_REG_H */

drivers/gpu/drm/rockchip/Makefile

@@ -3,7 +3,7 @@
 # Direct Rendering Infrastructure (DRI) in XFree86 4.1.0 and higher.
 
 rockchipdrm-y := rockchip_drm_drv.o rockchip_drm_fb.o \
-		rockchip_drm_gem.o rockchip_drm_vop.o
+		rockchip_drm_gem.o rockchip_drm_psr.o rockchip_drm_vop.o
 rockchipdrm-$(CONFIG_DRM_FBDEV_EMULATION) += rockchip_drm_fbdev.o
 
 obj-$(CONFIG_ROCKCHIP_ANALOGIX_DP) += analogix_dp-rockchip.o

drivers/gpu/drm/rockchip/analogix_dp-rockchip.c

@@ -32,6 +32,7 @@
 #include <drm/bridge/analogix_dp.h>
 
 #include "rockchip_drm_drv.h"
+#include "rockchip_drm_psr.h"
 #include "rockchip_drm_vop.h"
 
 #define RK3288_GRF_SOC_CON6		0x25c
@@ -41,6 +42,8 @@
 
 #define HIWORD_UPDATE(val, mask)	(val | (mask) << 16)
 
+#define PSR_WAIT_LINE_FLAG_TIMEOUT_MS	100
+
 #define to_dp(nm)	container_of(nm, struct rockchip_dp_device, nm)
 
 /**
@@ -68,11 +71,62 @@ struct rockchip_dp_device {
 	struct regmap            *grf;
 	struct reset_control     *rst;
 
+	struct work_struct	 psr_work;
+	spinlock_t		 psr_lock;
+	unsigned int             psr_state;
+
 	const struct rockchip_dp_chip_data *data;
 
 	struct analogix_dp_plat_data plat_data;
 };
 
+static void analogix_dp_psr_set(struct drm_encoder *encoder, bool enabled)
+{
+	struct rockchip_dp_device *dp = to_dp(encoder);
+	unsigned long flags;
+
+	dev_dbg(dp->dev, "%s PSR...\n", enabled ? "Entry" : "Exit");
+
+	spin_lock_irqsave(&dp->psr_lock, flags);
+	if (enabled)
+		dp->psr_state = EDP_VSC_PSR_STATE_ACTIVE;
+	else
+		dp->psr_state = ~EDP_VSC_PSR_STATE_ACTIVE;
+
+	schedule_work(&dp->psr_work);
+	spin_unlock_irqrestore(&dp->psr_lock, flags);
+}
+
+static void analogix_dp_psr_work(struct work_struct *work)
+{
+	struct rockchip_dp_device *dp =
+				container_of(work, typeof(*dp), psr_work);
+	struct drm_crtc *crtc = dp->encoder.crtc;
+	int psr_state = dp->psr_state;
+	int vact_end;
+	int ret;
+	unsigned long flags;
+
+	if (!crtc)
+		return;
+
+	vact_end = crtc->mode.vtotal - crtc->mode.vsync_start + crtc->mode.vdisplay;
+
+	ret = rockchip_drm_wait_line_flag(dp->encoder.crtc, vact_end,
+					  PSR_WAIT_LINE_FLAG_TIMEOUT_MS);
+	if (ret) {
+		dev_err(dp->dev, "line flag interrupt did not arrive\n");
+		return;
+	}
+
+	spin_lock_irqsave(&dp->psr_lock, flags);
+	if (psr_state == EDP_VSC_PSR_STATE_ACTIVE)
+		analogix_dp_enable_psr(dp->dev);
+	else
+		analogix_dp_disable_psr(dp->dev);
+	spin_unlock_irqrestore(&dp->psr_lock, flags);
+}
+
 static int rockchip_dp_pre_init(struct rockchip_dp_device *dp)
 {
 	reset_control_assert(dp->rst);
@@ -87,6 +141,8 @@ static int rockchip_dp_poweron(struct analogix_dp_plat_data *plat_data)
 	struct rockchip_dp_device *dp = to_dp(plat_data);
 	int ret;
 
+	cancel_work_sync(&dp->psr_work);
+
 	ret = clk_prepare_enable(dp->pclk);
 	if (ret < 0) {
 		dev_err(dp->dev, "failed to enable pclk %d\n", ret);
@@ -342,12 +398,22 @@ static int rockchip_dp_bind(struct device *dev, struct device *master,
 	dp->plat_data.power_off = rockchip_dp_powerdown;
 	dp->plat_data.get_modes = rockchip_dp_get_modes;
 
+	spin_lock_init(&dp->psr_lock);
+	dp->psr_state = ~EDP_VSC_PSR_STATE_ACTIVE;
+	INIT_WORK(&dp->psr_work, analogix_dp_psr_work);
+
+	rockchip_drm_psr_register(&dp->encoder, analogix_dp_psr_set);
+
 	return analogix_dp_bind(dev, dp->drm_dev, &dp->plat_data);
 }
 
 static void rockchip_dp_unbind(struct device *dev, struct device *master,
 			       void *data)
 {
+	struct rockchip_dp_device *dp = dev_get_drvdata(dev);
+
+	rockchip_drm_psr_unregister(&dp->encoder);
+
 	return analogix_dp_unbind(dev, master, data);
 }
 
@@ -381,10 +447,8 @@ static int rockchip_dp_probe(struct platform_device *pdev)
 
 		panel = of_drm_find_panel(panel_node);
 		of_node_put(panel_node);
-		if (!panel) {
-			DRM_ERROR("failed to find panel\n");
+		if (!panel)
 			return -EPROBE_DEFER;
-		}
 	}
 
 	dp = devm_kzalloc(dev, sizeof(*dp), GFP_KERNEL);

drivers/gpu/drm/rockchip/rockchip_drm_drv.c

@@ -156,6 +156,9 @@ static int rockchip_drm_bind(struct device *dev)
 
 	drm_dev->dev_private = private;
 
+	INIT_LIST_HEAD(&private->psr_list);
+	spin_lock_init(&private->psr_list_lock);
+
 	drm_mode_config_init(drm_dev);
 
 	rockchip_drm_mode_config_init(drm_dev);

drivers/gpu/drm/rockchip/rockchip_drm_drv.h

@@ -61,6 +61,9 @@ struct rockchip_drm_private {
 	struct drm_gem_object *fbdev_bo;
 	const struct rockchip_crtc_funcs *crtc_funcs[ROCKCHIP_MAX_CRTC];
 	struct drm_atomic_state *state;
+
+	struct list_head psr_list;
+	spinlock_t psr_list_lock;
 };
 
 int rockchip_register_crtc_funcs(struct drm_crtc *crtc,
@@ -70,4 +73,7 @@ int rockchip_drm_dma_attach_device(struct drm_device *drm_dev,
 				   struct device *dev);
 void rockchip_drm_dma_detach_device(struct drm_device *drm_dev,
 				    struct device *dev);
+int rockchip_drm_wait_line_flag(struct drm_crtc *crtc, unsigned int line_num,
+				unsigned int mstimeout);
+
 #endif /* _ROCKCHIP_DRM_DRV_H_ */

drivers/gpu/drm/rockchip/rockchip_drm_fb.c

@@ -22,6 +22,7 @@
 #include "rockchip_drm_drv.h"
 #include "rockchip_drm_fb.h"
 #include "rockchip_drm_gem.h"
+#include "rockchip_drm_psr.h"
 
 #define to_rockchip_fb(x) container_of(x, struct rockchip_drm_fb, fb)
 
@@ -63,9 +64,20 @@ static int rockchip_drm_fb_create_handle(struct drm_framebuffer *fb,
 				     rockchip_fb->obj[0], handle);
 }
 
+static int rockchip_drm_fb_dirty(struct drm_framebuffer *fb,
+				 struct drm_file *file,
+				 unsigned int flags, unsigned int color,
+				 struct drm_clip_rect *clips,
+				 unsigned int num_clips)
+{
+	rockchip_drm_psr_flush(fb->dev);
+	return 0;
+}
+
 static const struct drm_framebuffer_funcs rockchip_drm_fb_funcs = {
 	.destroy	= rockchip_drm_fb_destroy,
 	.create_handle	= rockchip_drm_fb_create_handle,
+	.dirty		= rockchip_drm_fb_dirty,
 };
 
 static struct rockchip_drm_fb *

drivers/gpu/drm/rockchip/rockchip_drm_psr.c

+/*
+ * Copyright (C) Fuzhou Rockchip Electronics Co.Ltd
+ * Author: Yakir Yang <ykk@rock-chips.com>
+ *
+ * This software is licensed under the terms of the GNU General Public
+ * License version 2, as published by the Free Software Foundation, and
+ * may be copied, distributed, and modified under those terms.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+#include <drm/drmP.h>
+#include <drm/drm_crtc_helper.h>
+
+#include "rockchip_drm_drv.h"
+#include "rockchip_drm_psr.h"
+
+#define PSR_FLUSH_TIMEOUT	msecs_to_jiffies(3000) /* 3 seconds */
+
+enum psr_state {
+	PSR_FLUSH,
+	PSR_ENABLE,
+	PSR_DISABLE,
+};
+
+struct psr_drv {
+	struct list_head	list;
+	struct drm_encoder	*encoder;
+
+	spinlock_t		lock;
+	enum psr_state		state;
+
+	struct timer_list	flush_timer;
+
+	void (*set)(struct drm_encoder *encoder, bool enable);
+};
+
+static struct psr_drv *find_psr_by_crtc(struct drm_crtc *crtc)
+{
+	struct rockchip_drm_private *drm_drv = crtc->dev->dev_private;
+	struct psr_drv *psr;
+	unsigned long flags;
+
+	spin_lock_irqsave(&drm_drv->psr_list_lock, flags);
+	list_for_each_entry(psr, &drm_drv->psr_list, list) {
+		if (psr->encoder->crtc == crtc)
+			goto out;
+	}
+	psr = ERR_PTR(-ENODEV);
+
+out:
+	spin_unlock_irqrestore(&drm_drv->psr_list_lock, flags);
+	return psr;
+}
+
+static void psr_set_state_locked(struct psr_drv *psr, enum psr_state state)
+{
+	/*
+	 * Allowed finite state machine:
+	 *
+	 *   PSR_ENABLE  < = = = = = >  PSR_FLUSH
+	 *       | ^                        |
+	 *       | |                        |
+	 *       v |                        |
+	 *   PSR_DISABLE < - - - - - - - - -
+	 */
+	if (state == psr->state)
+		return;
+
+	/* Requesting a flush when disabled is a noop */
+	if (state == PSR_FLUSH && psr->state == PSR_DISABLE)
+		return;
+
+	psr->state = state;
+
+	/* Already disabled in flush, change the state, but not the hardware */
+	if (state == PSR_DISABLE && psr->state == PSR_FLUSH)
+		return;
+
+	/* Actually commit the state change to hardware */
+	switch (psr->state) {
+	case PSR_ENABLE:
+		psr->set(psr->encoder, true);
+		break;
+
+	case PSR_DISABLE:
+	case PSR_FLUSH:
+		psr->set(psr->encoder, false);
+		break;
+	}
+}
+
+static void psr_set_state(struct psr_drv *psr, enum psr_state state)
+{
+	unsigned long flags;
+
+	spin_lock_irqsave(&psr->lock, flags);
+	psr_set_state_locked(psr, state);
+	spin_unlock_irqrestore(&psr->lock, flags);
+}
+
+static void psr_flush_handler(unsigned long data)
+{
+	struct psr_drv *psr = (struct psr_drv *)data;
+	unsigned long flags;
+
+	/* If the state has changed since we initiated the flush, do nothing */
+	spin_lock_irqsave(&psr->lock, flags);
+	if (psr->state == PSR_FLUSH)
+		psr_set_state_locked(psr, PSR_ENABLE);
+	spin_unlock_irqrestore(&psr->lock, flags);
+}
+
+/**
+ * rockchip_drm_psr_enable - enable the encoder PSR which bind to given CRTC
+ * @crtc: CRTC to obtain the PSR encoder
+ *
+ * Returns:
+ * Zero on success, negative errno on failure.
+ */
+int rockchip_drm_psr_enable(struct drm_crtc *crtc)
+{
+	struct psr_drv *psr = find_psr_by_crtc(crtc);
+
+	if (IS_ERR(psr))
+		return PTR_ERR(psr);
+
+	psr_set_state(psr, PSR_ENABLE);
+	return 0;
+}
+EXPORT_SYMBOL(rockchip_drm_psr_enable);
+
+/**
+ * rockchip_drm_psr_disable - disable the encoder PSR which bind to given CRTC
+ * @crtc: CRTC to obtain the PSR encoder
+ *
+ * Returns:
+ * Zero on success, negative errno on failure.
+ */
+int rockchip_drm_psr_disable(struct drm_crtc *crtc)
+{
+	struct psr_drv *psr = find_psr_by_crtc(crtc);
+
+	if (IS_ERR(psr))
+		return PTR_ERR(psr);
+
+	psr_set_state(psr, PSR_DISABLE);
+	return 0;
+}
+EXPORT_SYMBOL(rockchip_drm_psr_disable);
+
+/**
+ * rockchip_drm_psr_flush - force to flush all registered PSR encoders
+ * @dev: drm device
+ *
+ * Disable the PSR function for all registered encoders, and then enable the
+ * PSR function back after PSR_FLUSH_TIMEOUT. If encoder PSR state have been
+ * changed during flush time, then keep the state no change after flush
+ * timeout.
+ *
+ * Returns:
+ * Zero on success, negative errno on failure.
+ */
+void rockchip_drm_psr_flush(struct drm_device *dev)
+{
+	struct rockchip_drm_private *drm_drv = dev->dev_private;
+	struct psr_drv *psr;
+	unsigned long flags;
+
+	spin_lock_irqsave(&drm_drv->psr_list_lock, flags);
+	list_for_each_entry(psr, &drm_drv->psr_list, list) {
+		mod_timer(&psr->flush_timer,
+			  round_jiffies_up(jiffies + PSR_FLUSH_TIMEOUT));
+
+		psr_set_state(psr, PSR_FLUSH);
+	}
+	spin_unlock_irqrestore(&drm_drv->psr_list_lock, flags);
+}
+EXPORT_SYMBOL(rockchip_drm_psr_flush);
+
+/**
+ * rockchip_drm_psr_register - register encoder to psr driver
+ * @encoder: encoder that obtain the PSR function
+ * @psr_set: call back to set PSR state
+ *
+ * Returns:
+ * Zero on success, negative errno on failure.
+ */
+int rockchip_drm_psr_register(struct drm_encoder *encoder,
+			void (*psr_set)(struct drm_encoder *, bool enable))
+{
+	struct rockchip_drm_private *drm_drv = encoder->dev->dev_private;
+	struct psr_drv *psr;
+	unsigned long flags;
+
+	if (!encoder || !psr_set)
+		return -EINVAL;
+
+	psr = kzalloc(sizeof(struct psr_drv), GFP_KERNEL);
+	if (!psr)
+		return -ENOMEM;
+
+	setup_timer(&psr->flush_timer, psr_flush_handler, (unsigned long)psr);
+	spin_lock_init(&psr->lock);
+
+	psr->state = PSR_DISABLE;
+	psr->encoder = encoder;
+	psr->set = psr_set;
+
+	spin_lock_irqsave(&drm_drv->psr_list_lock, flags);
+	list_add_tail(&psr->list, &drm_drv->psr_list);
+	spin_unlock_irqrestore(&drm_drv->psr_list_lock, flags);
+
+	return 0;
+}
+EXPORT_SYMBOL(rockchip_drm_psr_register);
+
+/**
+ * rockchip_drm_psr_unregister - unregister encoder to psr driver
+ * @encoder: encoder that obtain the PSR function
+ * @psr_set: call back to set PSR state
+ *
+ * Returns:
+ * Zero on success, negative errno on failure.
+ */
+void rockchip_drm_psr_unregister(struct drm_encoder *encoder)
+{
+	struct rockchip_drm_private *drm_drv = encoder->dev->dev_private;
+	struct psr_drv *psr, *n;
+	unsigned long flags;
+
+	spin_lock_irqsave(&drm_drv->psr_list_lock, flags);
+	list_for_each_entry_safe(psr, n, &drm_drv->psr_list, list) {
+		if (psr->encoder == encoder) {
+			del_timer(&psr->flush_timer);
+			list_del(&psr->list);
+			kfree(psr);
+		}
+	}
+	spin_unlock_irqrestore(&drm_drv->psr_list_lock, flags);
+}
+EXPORT_SYMBOL(rockchip_drm_psr_unregister);

drivers/gpu/drm/rockchip/rockchip_drm_psr.h

+/*
+ * Copyright (C) Fuzhou Rockchip Electronics Co.Ltd
+ * Author: Yakir Yang <ykk@rock-chips.com>
+ *
+ * This software is licensed under the terms of the GNU General Public
+ * License version 2, as published by the Free Software Foundation, and
+ * may be copied, distributed, and modified under those terms.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+#ifndef __ROCKCHIP_DRM_PSR___
+#define __ROCKCHIP_DRM_PSR___
+
+void rockchip_drm_psr_flush(struct drm_device *dev);
+int rockchip_drm_psr_enable(struct drm_crtc *crtc);
+int rockchip_drm_psr_disable(struct drm_crtc *crtc);
+
+int rockchip_drm_psr_register(struct drm_encoder *encoder,
+			void (*psr_set)(struct drm_encoder *, bool enable));
+void rockchip_drm_psr_unregister(struct drm_encoder *encoder);
+
+#endif /* __ROCKCHIP_DRM_PSR__ */

drivers/gpu/drm/rockchip/rockchip_drm_vop.c

@@ -34,17 +34,21 @@
 #include "rockchip_drm_drv.h"
 #include "rockchip_drm_gem.h"
 #include "rockchip_drm_fb.h"
+#include "rockchip_drm_psr.h"
 #include "rockchip_drm_vop.h"
 
-#define __REG_SET_RELAXED(x, off, mask, shift, v) \
-		vop_mask_write_relaxed(x, off, (mask) << shift, (v) << shift)
-#define __REG_SET_NORMAL(x, off, mask, shift, v) \
-		vop_mask_write(x, off, (mask) << shift, (v) << shift)
+#define __REG_SET_RELAXED(x, off, mask, shift, v, write_mask) \
+		vop_mask_write(x, off, mask, shift, v, write_mask, true)
+
+#define __REG_SET_NORMAL(x, off, mask, shift, v, write_mask) \
+		vop_mask_write(x, off, mask, shift, v, write_mask, false)
 
 #define REG_SET(x, base, reg, v, mode) \
-		__REG_SET_##mode(x, base + reg.offset, reg.mask, reg.shift, v)
+		__REG_SET_##mode(x, base + reg.offset, \
+				 reg.mask, reg.shift, v, reg.write_mask)
 #define REG_SET_MASK(x, base, reg, mask, v, mode) \
-		__REG_SET_##mode(x, base + reg.offset, mask, reg.shift, v)
+		__REG_SET_##mode(x, base + reg.offset, \
+				 mask, reg.shift, v, reg.write_mask)
 
 #define VOP_WIN_SET(x, win, name, v) \
 		REG_SET(x, win->base, win->phy->name, v, RELAXED)
@@ -106,6 +110,7 @@ struct vop {
 	struct device *dev;
 	struct drm_device *drm_dev;
 	bool is_enabled;
+	bool vblank_active;
 
 	/* mutex vsync_ work */
 	struct mutex vsync_mutex;
@@ -116,6 +121,8 @@ struct vop {
 	/* protected by dev->event_lock */
 	struct drm_pending_vblank_event *event;
 
+	struct completion line_flag_completion;
+
 	const struct vop_data *data;
 
 	uint32_t *regsbak;
@@ -162,27 +169,25 @@ static inline uint32_t vop_read_reg(struct vop *vop, uint32_t base,
 }
 
 static inline void vop_mask_write(struct vop *vop, uint32_t offset,
-				  uint32_t mask, uint32_t v)
+				  uint32_t mask, uint32_t shift, uint32_t v,
+				  bool write_mask, bool relaxed)
 {
-	if (mask) {
-		uint32_t cached_val = vop->regsbak[offset >> 2];
-
-		cached_val = (cached_val & ~mask) | v;
-		writel(cached_val, vop->regs + offset);
-		vop->regsbak[offset >> 2] = cached_val;
-	}
-}
+	if (!mask)
+		return;
 
-static inline void vop_mask_write_relaxed(struct vop *vop, uint32_t offset,
-					  uint32_t mask, uint32_t v)
-{
-	if (mask) {
+	if (write_mask) {
+		v = ((v << shift) & 0xffff) | (mask << (shift + 16));
+	} else {
 		uint32_t cached_val = vop->regsbak[offset >> 2];
 
-		cached_val = (cached_val & ~mask) | v;
-		writel_relaxed(cached_val, vop->regs + offset);
-		vop->regsbak[offset >> 2] = cached_val;
+		v = (cached_val & ~(mask << shift)) | ((v & mask) << shift);
+		vop->regsbak[offset >> 2] = v;
 	}
+
+	if (relaxed)
+		writel_relaxed(v, vop->regs + offset);
+	else
+		writel(v, vop->regs + offset);
 }
 
 static inline uint32_t vop_get_intr_type(struct vop *vop,
@@ -428,6 +433,71 @@ static void vop_dsp_hold_valid_irq_disable(struct vop *vop)
 	spin_unlock_irqrestore(&vop->irq_lock, flags);
 }
 
+/*
+ * (1) each frame starts at the start of the Vsync pulse which is signaled by
+ *     the "FRAME_SYNC" interrupt.
+ * (2) the active data region of each frame ends at dsp_vact_end
+ * (3) we should program this same number (dsp_vact_end) into dsp_line_frag_num,
+ *      to get "LINE_FLAG" interrupt at the end of the active on screen data.
+ *
+ * VOP_INTR_CTRL0.dsp_line_frag_num = VOP_DSP_VACT_ST_END.dsp_vact_end
+ * Interrupts
+ * LINE_FLAG -------------------------------+
+ * FRAME_SYNC ----+                         |
+ *                |                         |
+ *                v                         v
+ *                | Vsync | Vbp |  Vactive  | Vfp |
+ *                        ^     ^           ^     ^
+ *                        |     |           |     |
+ *                        |     |           |     |
+ * dsp_vs_end ------------+     |           |     |   VOP_DSP_VTOTAL_VS_END
+ * dsp_vact_start --------------+           |     |   VOP_DSP_VACT_ST_END
+ * dsp_vact_end ----------------------------+     |   VOP_DSP_VACT_ST_END
+ * dsp_total -------------------------------------+   VOP_DSP_VTOTAL_VS_END
+ */
+static bool vop_line_flag_irq_is_enabled(struct vop *vop)
+{
+	uint32_t line_flag_irq;
+	unsigned long flags;
+
+	spin_lock_irqsave(&vop->irq_lock, flags);
+
+	line_flag_irq = VOP_INTR_GET_TYPE(vop, enable, LINE_FLAG_INTR);
+
+	spin_unlock_irqrestore(&vop->irq_lock, flags);
+
+	return !!line_flag_irq;
+}
+
+static void vop_line_flag_irq_enable(struct vop *vop, int line_num)
+{
+	unsigned long flags;
+
+	if (WARN_ON(!vop->is_enabled))
+		return;
+
+	spin_lock_irqsave(&vop->irq_lock, flags);
+
+	VOP_CTRL_SET(vop, line_flag_num[0], line_num);
+	VOP_INTR_SET_TYPE(vop, enable, LINE_FLAG_INTR, 1);
+
+	spin_unlock_irqrestore(&vop->irq_lock, flags);
+}
+
+static void vop_line_flag_irq_disable(struct vop *vop)
+{
+	unsigned long flags;
+
+	if (WARN_ON(!vop->is_enabled))
+		return;
+
+	spin_lock_irqsave(&vop->irq_lock, flags);
+
+	VOP_INTR_SET_TYPE(vop, enable, LINE_FLAG_INTR, 0);
+
+	spin_unlock_irqrestore(&vop->irq_lock, flags);
+}
+
 static int vop_enable(struct drm_crtc *crtc)
 {
 	struct vop *vop = to_vop(crtc);
@@ -849,6 +919,8 @@ static int vop_crtc_enable_vblank(struct drm_crtc *crtc)
 
 	spin_unlock_irqrestore(&vop->irq_lock, flags);
 
+	rockchip_drm_psr_disable(&vop->crtc);
+
 	return 0;
 }
 
@@ -865,6 +937,8 @@ static void vop_crtc_disable_vblank(struct drm_crtc *crtc)
 	VOP_INTR_SET_TYPE(vop, enable, FS_INTR, 0);
 
 	spin_unlock_irqrestore(&vop->irq_lock, flags);
+
+	rockchip_drm_psr_enable(&vop->crtc);
 }
 
 static void vop_crtc_wait_for_update(struct drm_crtc *crtc)
@@ -908,7 +982,7 @@ static void vop_crtc_enable(struct drm_crtc *crtc)
 	u16 vsync_len = adjusted_mode->vsync_end - adjusted_mode->vsync_start;
 	u16 vact_st = adjusted_mode->vtotal - adjusted_mode->vsync_start;
 	u16 vact_end = vact_st + vdisplay;
-	uint32_t val;
+	uint32_t pin_pol, val;
 	int ret;
 
 	WARN_ON(vop->event);
@@ -955,21 +1029,26 @@ static void vop_crtc_enable(struct drm_crtc *crtc)
 		vop_dsp_hold_valid_irq_disable(vop);
 	}
 
-	val = 0x8;
-	val |= (adjusted_mode->flags & DRM_MODE_FLAG_NHSYNC) ? 0 : 1;
-	val |= (adjusted_mode->flags & DRM_MODE_FLAG_NVSYNC) ? 0 : (1 << 1);
-	VOP_CTRL_SET(vop, pin_pol, val);
+	pin_pol = 0x8;
+	pin_pol |= (adjusted_mode->flags & DRM_MODE_FLAG_NHSYNC) ? 0 : 1;
+	pin_pol |= (adjusted_mode->flags & DRM_MODE_FLAG_NVSYNC) ? 0 : (1 << 1);
+	VOP_CTRL_SET(vop, pin_pol, pin_pol);
+
 	switch (s->output_type) {
 	case DRM_MODE_CONNECTOR_LVDS:
 		VOP_CTRL_SET(vop, rgb_en, 1);
+		VOP_CTRL_SET(vop, rgb_pin_pol, pin_pol);
 		break;
 	case DRM_MODE_CONNECTOR_eDP:
+		VOP_CTRL_SET(vop, edp_pin_pol, pin_pol);
 		VOP_CTRL_SET(vop, edp_en, 1);
 		break;
 	case DRM_MODE_CONNECTOR_HDMIA:
+		VOP_CTRL_SET(vop, hdmi_pin_pol, pin_pol);
 		VOP_CTRL_SET(vop, hdmi_en, 1);
 		break;
 	case DRM_MODE_CONNECTOR_DSI:
+		VOP_CTRL_SET(vop, mipi_pin_pol, pin_pol);
 		VOP_CTRL_SET(vop, mipi_en, 1);
 		break;
 	default:
@@ -1016,10 +1095,11 @@ static void vop_crtc_atomic_begin(struct drm_crtc *crtc,
 	struct vop *vop = to_vop(crtc);
 
 	spin_lock_irq(&crtc->dev->event_lock);
-	if (crtc->state->event) {
-		WARN_ON(drm_crtc_vblank_get(crtc) != 0);
-		WARN_ON(vop->event);
+	vop->vblank_active = true;
+	WARN_ON(drm_crtc_vblank_get(crtc) != 0);
+	WARN_ON(vop->event);
 
+	if (crtc->state->event) {
 		vop->event = crtc->state->event;
 		crtc->state->event = NULL;
 	}
@@ -1106,12 +1186,14 @@ static void vop_handle_vblank(struct vop *vop)
 
 	spin_lock_irqsave(&drm->event_lock, flags);
 	if (vop->event) {
-
 		drm_crtc_send_vblank_event(crtc, vop->event);
-		drm_crtc_vblank_put(crtc);
 		vop->event = NULL;
 
 	}
+	if (vop->vblank_active) {
+		vop->vblank_active = false;
+		drm_crtc_vblank_put(crtc);
+	}
 	spin_unlock_irqrestore(&drm->event_lock, flags);
 
 	if (!completion_done(&vop->wait_update_complete))
@@ -1149,6 +1231,12 @@ static irqreturn_t vop_isr(int irq, void *data)
 		ret = IRQ_HANDLED;
 	}
 
+	if (active_irqs & LINE_FLAG_INTR) {
+		complete(&vop->line_flag_completion);
+		active_irqs &= ~LINE_FLAG_INTR;
+		ret = IRQ_HANDLED;
+	}
+
 	if (active_irqs & FS_INTR) {
 		drm_crtc_handle_vblank(crtc);
 		vop_handle_vblank(vop);
@@ -1250,6 +1338,7 @@ static int vop_create_crtc(struct vop *vop)
 
 	init_completion(&vop->dsp_hold_completion);
 	init_completion(&vop->wait_update_complete);
+	init_completion(&vop->line_flag_completion);
 	crtc->port = port;
 	rockchip_register_crtc_funcs(crtc, &private_crtc_funcs);
 
@@ -1377,6 +1466,7 @@ static int vop_initial(struct vop *vop)
 	clk_disable(vop->aclk);
 
 	vop->is_enabled = false;
+	vop->vblank_active = false;
 
 	return 0;
 
@@ -1406,6 +1496,49 @@ static void vop_win_init(struct vop *vop)
 	}
 }
 
+/**
+ * rockchip_drm_wait_line_flag - acqiure the give line flag event
+ * @crtc: CRTC to enable line flag
+ * @line_num: interested line number
+ * @mstimeout: millisecond for timeout
+ *
+ * Driver would hold here until the interested line flag interrupt have
+ * happened or timeout to wait.
+ *
+ * Returns:
+ * Zero on success, negative errno on failure.
+ */
+int rockchip_drm_wait_line_flag(struct drm_crtc *crtc, unsigned int line_num,
+				unsigned int mstimeout)
+{
+	struct vop *vop = to_vop(crtc);
+	unsigned long jiffies_left;
+
+	if (!crtc || !vop->is_enabled)
+		return -ENODEV;
+
+	if (line_num > crtc->mode.vtotal || mstimeout <= 0)
+		return -EINVAL;
+
+	if (vop_line_flag_irq_is_enabled(vop))
+		return -EBUSY;
+
+	reinit_completion(&vop->line_flag_completion);
+	vop_line_flag_irq_enable(vop, line_num);
+
+	jiffies_left = wait_for_completion_timeout(&vop->line_flag_completion,
+						   msecs_to_jiffies(mstimeout));
+	vop_line_flag_irq_disable(vop);
+
+	if (jiffies_left == 0) {
+		dev_err(vop->dev, "Timeout waiting for IRQ\n");
+		return -ETIMEDOUT;
+	}
+
+	return 0;
+}
+EXPORT_SYMBOL(rockchip_drm_wait_line_flag);
+
 static int vop_bind(struct device *dev, struct device *master, void *data)
 {
 	struct platform_device *pdev = to_platform_device(dev);
@@ -1474,6 +1607,7 @@ static int vop_bind(struct device *dev, struct device *master, void *data)
 		return ret;
 
 	pm_runtime_enable(&pdev->dev);
+
 	return 0;
 }
 

drivers/gpu/drm/rockchip/rockchip_drm_vop.h

@@ -33,6 +33,7 @@ struct vop_reg {
 	uint32_t offset;
 	uint32_t shift;
 	uint32_t mask;
+	bool write_mask;
 };
 
 struct vop_ctrl {
@@ -48,6 +49,10 @@ struct vop_ctrl {
 	struct vop_reg dither_down;
 	struct vop_reg dither_up;
 	struct vop_reg pin_pol;
+	struct vop_reg rgb_pin_pol;
+	struct vop_reg hdmi_pin_pol;
+	struct vop_reg edp_pin_pol;
+	struct vop_reg mipi_pin_pol;
 
 	struct vop_reg htotal_pw;
 	struct vop_reg hact_st_end;
@@ -56,6 +61,8 @@ struct vop_ctrl {
 	struct vop_reg hpost_st_end;
 	struct vop_reg vpost_st_end;
 
+	struct vop_reg line_flag_num[2];
+
 	struct vop_reg cfg_done;
 };
 

drivers/gpu/drm/rockchip/rockchip_vop_reg.h

@@ -166,4 +166,197 @@
 #define RK3036_HWC_LUT_ADDR		0x800
 /* rk3036 register definition end */
 
+/* rk3399 register definition */
+#define RK3399_REG_CFG_DONE		0x00000
+#define RK3399_VERSION_INFO		0x00004
+#define RK3399_SYS_CTRL			0x00008
+#define RK3399_SYS_CTRL1		0x0000c
+#define RK3399_DSP_CTRL0		0x00010
+#define RK3399_DSP_CTRL1		0x00014
+#define RK3399_DSP_BG			0x00018
+#define RK3399_MCU_CTRL			0x0001c
+#define RK3399_WB_CTRL0			0x00020
+#define RK3399_WB_CTRL1			0x00024
+#define RK3399_WB_YRGB_MST		0x00028
+#define RK3399_WB_CBR_MST		0x0002c
+#define RK3399_WIN0_CTRL0		0x00030
+#define RK3399_WIN0_CTRL1		0x00034
+#define RK3399_WIN0_COLOR_KEY		0x00038
+#define RK3399_WIN0_VIR			0x0003c
+#define RK3399_WIN0_YRGB_MST		0x00040
+#define RK3399_WIN0_CBR_MST		0x00044
+#define RK3399_WIN0_ACT_INFO		0x00048
+#define RK3399_WIN0_DSP_INFO		0x0004c
+#define RK3399_WIN0_DSP_ST		0x00050
+#define RK3399_WIN0_SCL_FACTOR_YRGB	0x00054
+#define RK3399_WIN0_SCL_FACTOR_CBR	0x00058
+#define RK3399_WIN0_SCL_OFFSET		0x0005c
+#define RK3399_WIN0_SRC_ALPHA_CTRL	0x00060
+#define RK3399_WIN0_DST_ALPHA_CTRL	0x00064
+#define RK3399_WIN0_FADING_CTRL		0x00068
+#define RK3399_WIN0_CTRL2		0x0006c
+#define RK3399_WIN1_CTRL0		0x00070
+#define RK3399_WIN1_CTRL1		0x00074
+#define RK3399_WIN1_COLOR_KEY		0x00078
+#define RK3399_WIN1_VIR			0x0007c
+#define RK3399_WIN1_YRGB_MST		0x00080
+#define RK3399_WIN1_CBR_MST		0x00084
+#define RK3399_WIN1_ACT_INFO		0x00088
+#define RK3399_WIN1_DSP_INFO		0x0008c
+#define RK3399_WIN1_DSP_ST		0x00090
+#define RK3399_WIN1_SCL_FACTOR_YRGB	0x00094
+#define RK3399_WIN1_SCL_FACTOR_CBR	0x00098
+#define RK3399_WIN1_SCL_OFFSET		0x0009c
+#define RK3399_WIN1_SRC_ALPHA_CTRL	0x000a0
+#define RK3399_WIN1_DST_ALPHA_CTRL	0x000a4
+#define RK3399_WIN1_FADING_CTRL		0x000a8
+#define RK3399_WIN1_CTRL2		0x000ac
+#define RK3399_WIN2_CTRL0		0x000b0
+#define RK3399_WIN2_CTRL1		0x000b4
+#define RK3399_WIN2_VIR0_1		0x000b8
+#define RK3399_WIN2_VIR2_3		0x000bc
+#define RK3399_WIN2_MST0		0x000c0
+#define RK3399_WIN2_DSP_INFO0		0x000c4
+#define RK3399_WIN2_DSP_ST0		0x000c8
+#define RK3399_WIN2_COLOR_KEY		0x000cc
+#define RK3399_WIN2_MST1		0x000d0
+#define RK3399_WIN2_DSP_INFO1		0x000d4
+#define RK3399_WIN2_DSP_ST1		0x000d8
+#define RK3399_WIN2_SRC_ALPHA_CTRL	0x000dc
+#define RK3399_WIN2_MST2		0x000e0
+#define RK3399_WIN2_DSP_INFO2		0x000e4
+#define RK3399_WIN2_DSP_ST2		0x000e8
+#define RK3399_WIN2_DST_ALPHA_CTRL	0x000ec
+#define RK3399_WIN2_MST3		0x000f0
+#define RK3399_WIN2_DSP_INFO3		0x000f4
+#define RK3399_WIN2_DSP_ST3		0x000f8
+#define RK3399_WIN2_FADING_CTRL		0x000fc
+#define RK3399_WIN3_CTRL0		0x00100
+#define RK3399_WIN3_CTRL1		0x00104
+#define RK3399_WIN3_VIR0_1		0x00108
+#define RK3399_WIN3_VIR2_3		0x0010c
+#define RK3399_WIN3_MST0		0x00110
+#define RK3399_WIN3_DSP_INFO0		0x00114
+#define RK3399_WIN3_DSP_ST0		0x00118
+#define RK3399_WIN3_COLOR_KEY		0x0011c
+#define RK3399_WIN3_MST1		0x00120
+#define RK3399_WIN3_DSP_INFO1		0x00124
+#define RK3399_WIN3_DSP_ST1		0x00128
+#define RK3399_WIN3_SRC_ALPHA_CTRL	0x0012c
+#define RK3399_WIN3_MST2		0x00130
+#define RK3399_WIN3_DSP_INFO2		0x00134
+#define RK3399_WIN3_DSP_ST2		0x00138
+#define RK3399_WIN3_DST_ALPHA_CTRL	0x0013c
+#define RK3399_WIN3_MST3		0x00140
+#define RK3399_WIN3_DSP_INFO3		0x00144
+#define RK3399_WIN3_DSP_ST3		0x00148
+#define RK3399_WIN3_FADING_CTRL		0x0014c
+#define RK3399_HWC_CTRL0		0x00150
+#define RK3399_HWC_CTRL1		0x00154
+#define RK3399_HWC_MST			0x00158
+#define RK3399_HWC_DSP_ST		0x0015c
+#define RK3399_HWC_SRC_ALPHA_CTRL	0x00160
+#define RK3399_HWC_DST_ALPHA_CTRL	0x00164
+#define RK3399_HWC_FADING_CTRL		0x00168
+#define RK3399_HWC_RESERVED1		0x0016c
+#define RK3399_POST_DSP_HACT_INFO	0x00170
+#define RK3399_POST_DSP_VACT_INFO	0x00174
+#define RK3399_POST_SCL_FACTOR_YRGB	0x00178
+#define RK3399_POST_RESERVED		0x0017c
+#define RK3399_POST_SCL_CTRL		0x00180
+#define RK3399_POST_DSP_VACT_INFO_F1	0x00184
+#define RK3399_DSP_HTOTAL_HS_END	0x00188
+#define RK3399_DSP_HACT_ST_END		0x0018c
+#define RK3399_DSP_VTOTAL_VS_END	0x00190
+#define RK3399_DSP_VACT_ST_END		0x00194
+#define RK3399_DSP_VS_ST_END_F1		0x00198
+#define RK3399_DSP_VACT_ST_END_F1	0x0019c
+#define RK3399_PWM_CTRL			0x001a0
+#define RK3399_PWM_PERIOD_HPR		0x001a4
+#define RK3399_PWM_DUTY_LPR		0x001a8
+#define RK3399_PWM_CNT			0x001ac
+#define RK3399_BCSH_COLOR_BAR		0x001b0
+#define RK3399_BCSH_BCS			0x001b4
+#define RK3399_BCSH_H			0x001b8
+#define RK3399_BCSH_CTRL		0x001bc
+#define RK3399_CABC_CTRL0		0x001c0
+#define RK3399_CABC_CTRL1		0x001c4
+#define RK3399_CABC_CTRL2		0x001c8
+#define RK3399_CABC_CTRL3		0x001cc
+#define RK3399_CABC_GAUSS_LINE0_0	0x001d0
+#define RK3399_CABC_GAUSS_LINE0_1	0x001d4
+#define RK3399_CABC_GAUSS_LINE1_0	0x001d8
+#define RK3399_CABC_GAUSS_LINE1_1	0x001dc
+#define RK3399_CABC_GAUSS_LINE2_0	0x001e0
+#define RK3399_CABC_GAUSS_LINE2_1	0x001e4
+#define RK3399_FRC_LOWER01_0		0x001e8
+#define RK3399_FRC_LOWER01_1		0x001ec
+#define RK3399_FRC_LOWER10_0		0x001f0
+#define RK3399_FRC_LOWER10_1		0x001f4
+#define RK3399_FRC_LOWER11_0		0x001f8
+#define RK3399_FRC_LOWER11_1		0x001fc
+#define RK3399_AFBCD0_CTRL		0x00200
+#define RK3399_AFBCD0_HDR_PTR		0x00204
+#define RK3399_AFBCD0_PIC_SIZE		0x00208
+#define RK3399_AFBCD0_STATUS		0x0020c
+#define RK3399_AFBCD1_CTRL		0x00220
+#define RK3399_AFBCD1_HDR_PTR		0x00224
+#define RK3399_AFBCD1_PIC_SIZE		0x00228
+#define RK3399_AFBCD1_STATUS		0x0022c
+#define RK3399_AFBCD2_CTRL		0x00240
+#define RK3399_AFBCD2_HDR_PTR		0x00244
+#define RK3399_AFBCD2_PIC_SIZE		0x00248
+#define RK3399_AFBCD2_STATUS		0x0024c
+#define RK3399_AFBCD3_CTRL		0x00260
+#define RK3399_AFBCD3_HDR_PTR		0x00264
+#define RK3399_AFBCD3_PIC_SIZE		0x00268
+#define RK3399_AFBCD3_STATUS		0x0026c
+#define RK3399_INTR_EN0			0x00280
+#define RK3399_INTR_CLEAR0		0x00284
+#define RK3399_INTR_STATUS0		0x00288
+#define RK3399_INTR_RAW_STATUS0		0x0028c
+#define RK3399_INTR_EN1			0x00290
+#define RK3399_INTR_CLEAR1		0x00294
+#define RK3399_INTR_STATUS1		0x00298
+#define RK3399_INTR_RAW_STATUS1		0x0029c
+#define RK3399_LINE_FLAG		0x002a0
+#define RK3399_VOP_STATUS		0x002a4
+#define RK3399_BLANKING_VALUE		0x002a8
+#define RK3399_MCU_BYPASS_PORT		0x002ac
+#define RK3399_WIN0_DSP_BG		0x002b0
+#define RK3399_WIN1_DSP_BG		0x002b4
+#define RK3399_WIN2_DSP_BG		0x002b8
+#define RK3399_WIN3_DSP_BG		0x002bc
+#define RK3399_YUV2YUV_WIN		0x002c0
+#define RK3399_YUV2YUV_POST		0x002c4
+#define RK3399_AUTO_GATING_EN		0x002cc
+#define RK3399_WIN0_CSC_COE		0x003a0
+#define RK3399_WIN1_CSC_COE		0x003c0
+#define RK3399_WIN2_CSC_COE		0x003e0
+#define RK3399_WIN3_CSC_COE		0x00400
+#define RK3399_HWC_CSC_COE		0x00420
+#define RK3399_BCSH_R2Y_CSC_COE		0x00440
+#define RK3399_BCSH_Y2R_CSC_COE		0x00460
+#define RK3399_POST_YUV2YUV_Y2R_COE	0x00480
+#define RK3399_POST_YUV2YUV_3X3_COE	0x004a0
+#define RK3399_POST_YUV2YUV_R2Y_COE	0x004c0
+#define RK3399_WIN0_YUV2YUV_Y2R		0x004e0
+#define RK3399_WIN0_YUV2YUV_3X3		0x00500
+#define RK3399_WIN0_YUV2YUV_R2Y		0x00520
+#define RK3399_WIN1_YUV2YUV_Y2R		0x00540
+#define RK3399_WIN1_YUV2YUV_3X3		0x00560
+#define RK3399_WIN1_YUV2YUV_R2Y		0x00580
+#define RK3399_WIN2_YUV2YUV_Y2R		0x005a0
+#define RK3399_WIN2_YUV2YUV_3X3		0x005c0
+#define RK3399_WIN2_YUV2YUV_R2Y		0x005e0
+#define RK3399_WIN3_YUV2YUV_Y2R		0x00600
+#define RK3399_WIN3_YUV2YUV_3X3		0x00620
+#define RK3399_WIN3_YUV2YUV_R2Y		0x00640
+#define RK3399_WIN2_LUT_ADDR		0x01000
+#define RK3399_WIN3_LUT_ADDR		0x01400
+#define RK3399_HWC_LUT_ADDR		0x01800
+#define RK3399_CABC_GAMMA_LUT_ADDR	0x01c00
+#define RK3399_GAMMA_LUT_ADDR		0x02000
+/* rk3399 register definition end */
+
 #endif /* _ROCKCHIP_VOP_REG_H */

include/drm/bridge/analogix_dp.h

@@ -38,6 +38,9 @@ struct analogix_dp_plat_data {
 			 struct drm_connector *);
 };
 
+int analogix_dp_enable_psr(struct device *dev);
+int analogix_dp_disable_psr(struct device *dev);
+
 int analogix_dp_resume(struct device *dev);
 int analogix_dp_suspend(struct device *dev);