Merge tag 'drm-misc-next-2018-02-13' of git://anongit.freedesktop.org/drm/drm-misc into drm-next

drm-misc-next for 4.17:

UAPI Changes:
- drm/vc4: Expose performance counters to userspace (Boris)

Cross-subsystem Changes:
- MAINTAINERS: Linus to maintain panel-arm-versatile in -misc (Linus)

Core Changes:
- Only use swiotlb when necessary (Chunming)

Driver Changes:
- drm/panel: Add support for ARM Versatile panels (Linus)
- pl111: Improvements around versatile panel support (Linus)

----------------------------------------
Tagged on 2018-02-06:
drm-misc-next for 4.17:

UAPI Changes:
- Validate mode flags + type (Ville)
- Deprecate unused mode flags PIXMUX, BCAST (Ville)
- Deprecate unused mode types BUILTIN, CRTC_C, CLOCK_C, DEFAULT (Ville)

Cross-subsystem Changes:
- MAINTAINERS: s/Daniel/Maarten/ for drm-misc (Daniel)

Core Changes:
- gem: Export gem functions for drivers to use (Samuel)
- bridge: Introduce bridge timings in drm_bridge (Linus)
- dma-buf: Allow exclusive fence to be bundled in fence array when
	   calling reservation_object_get_fences_rcu (Christian)
- dp: Add training pattern 4 and HBR3 support to dp helpers (Manasi)
- fourcc: Add alpha bit to formats to avoid driver format LUTs (Maxime)
- mode: Various cleanups + add new device-wide .mode_valid hook (Ville)
- atomic: Fix state leak when non-blocking commits fail (Leo)
	  NOTE: IIRC, this was cross-picked to -fixes so it might fall out
- crc: Allow polling on the data fd (Maarten)

Driver Changes:
- bridge/vga-dac: Add THS8134* support (Linus)
- tinydrm: Various MIPI DBI improvements/cleanups (Noralf)
- bridge/dw-mipi-dsi: Cleanups + use create_packet helper (Brian)
- drm/sun4i: Add Display Engine frontend support (Maxime)
- drm/sun4i: Add zpos support + increase num planes from 2 to 4 (Maxime)
- various: Use drm_mode_get_hv_timing() to fill plane clip rectangle (Ville)
- stm: Add 8-bit clut support, add dsi phy v1.31 support, +fixes (Phillipe)

Cc: Boris Brezillon <boris.brezillon@free-electrons.com>
Cc: Chunming Zhou <david1.zhou@amd.com>
Cc: Samuel Li <Samuel.Li@amd.com>
Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: Noralf Trønnes <noralf@tronnes.org>
Cc: Brian Norris <briannorris@chromium.org>
Cc: Maxime Ripard <maxime.ripard@free-electrons.com>
Cc: Ville Syrjala <ville.syrjala@linux.intel.com>
Cc: Christian König <christian.koenig@amd.com>
Cc: Manasi Navare <manasi.d.navare@intel.com>
Cc: Philippe Cornu <philippe.cornu@st.com>
Cc: Leo (Sunpeng) Li <sunpeng.li@amd.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>

* tag 'drm-misc-next-2018-02-13' of git://anongit.freedesktop.org/drm/drm-misc: (115 commits)
  drm/radeon: only enable swiotlb path when need v2
  drm/amdgpu: only enable swiotlb alloc when need v2
  drm: add func to get max iomem address v2
  drm/vc4: Expose performance counters to userspace
  drm: Print the pid when debug logging an ioctl error.
  drm/stm: ltdc: remove non-alpha color formats on layer 2 for older hw
  drm/stm: ltdc: add non-alpha color formats
  drm/bridge/synopsys: dsi: Add 1.31 version support
  drm/bridge/synopsys: dsi: Add read feature
  drm/pl111: Support multiple endpoints on the CLCD
  drm/pl111: Support variants with broken VBLANK
  drm/pl111: Support variants with broken clock divider
  drm/pl111: Handle the Versatile RGB/BGR565 mode
  drm/pl111: Properly detect the ARM PL110 variants
  drm/panel: Add support for ARM Versatile panels
  drm/panel: Device tree bindings for ARM Versatile panels
  drm/bridge: Rename argument from crtc to bridge
  drm/crc: Add support for polling on the data fd.
  drm/sun4i: Use drm_mode_get_hv_timing() to populate plane clip rectangle
  drm/rcar-du: Use drm_mode_get_hv_timing() to populate plane clip rectangle
  ...

4 files changed, 162 insertions, 106 deletions

diff --git a/drivers/gpu/drm/bridge/analogix-anx78xx.c b/drivers/gpu/drm/bridge/analogix-anx78xx.c
index ed12a7ddd64a..b49043866be6 100644
--- a/drivers/gpu/drm/bridge/analogix-anx78xx.c
+++ b/drivers/gpu/drm/bridge/analogix-anx78xx.c
@@ -1301,8 +1301,7 @@ static void unregister_i2c_dummy_clients(struct anx78xx *anx78xx)
 	unsigned int i;
 
 	for (i = 0; i < ARRAY_SIZE(anx78xx->i2c_dummy); i++)
-		if (anx78xx->i2c_dummy[i])
-			i2c_unregister_device(anx78xx->i2c_dummy[i]);
+		i2c_unregister_device(anx78xx->i2c_dummy[i]);
 }
 
 static const struct regmap_config anx78xx_regmap_config = {
diff --git a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
index a8905049b9da..b2756bc4225a 100644
--- a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
+++ b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
@@ -727,7 +727,6 @@ static int analogix_dp_set_link_train(struct analogix_dp_device *dp,
 
 static int analogix_dp_config_video(struct analogix_dp_device *dp)
 {
-	int retval = 0;
 	int timeout_loop = 0;
 	int done_count = 0;
 
@@ -783,10 +782,7 @@ static int analogix_dp_config_video(struct analogix_dp_device *dp)
 		usleep_range(1000, 1001);
 	}
 
-	if (retval != 0)
-		dev_err(dp->dev, "Video stream is not detected!\n");
-
-	return retval;
+	return 0;
 }
 
 static void analogix_dp_enable_scramble(struct analogix_dp_device *dp,
diff --git a/drivers/gpu/drm/bridge/dumb-vga-dac.c b/drivers/gpu/drm/bridge/dumb-vga-dac.c
index de5e7dee7ad6..498d5948d1a8 100644
--- a/drivers/gpu/drm/bridge/dumb-vga-dac.c
+++ b/drivers/gpu/drm/bridge/dumb-vga-dac.c
@@ -11,6 +11,7 @@
  */
 
 #include <linux/module.h>
+#include <linux/of_device.h>
 #include <linux/of_graph.h>
 #include <linux/regulator/consumer.h>
 
@@ -204,6 +205,7 @@ static int dumb_vga_probe(struct platform_device *pdev)
 
 	vga->bridge.funcs = &dumb_vga_bridge_funcs;
 	vga->bridge.of_node = pdev->dev.of_node;
+	vga->bridge.timings = of_device_get_match_data(&pdev->dev);
 
 	drm_bridge_add(&vga->bridge);
 
@@ -222,10 +224,61 @@ static int dumb_vga_remove(struct platform_device *pdev)
 	return 0;
 }
 
+/*
+ * We assume the ADV7123 DAC is the "default" for historical reasons
+ * Information taken from the ADV7123 datasheet, revision D.
+ * NOTE: the ADV7123EP seems to have other timings and need a new timings
+ * set if used.
+ */
+static const struct drm_bridge_timings default_dac_timings = {
+	/* Timing specifications, datasheet page 7 */
+	.sampling_edge = DRM_BUS_FLAG_PIXDATA_POSEDGE,
+	.setup_time_ps = 500,
+	.hold_time_ps = 1500,
+};
+
+/*
+ * Information taken from the THS8134, THS8134A, THS8134B datasheet named
+ * "SLVS205D", dated May 1990, revised March 2000.
+ */
+static const struct drm_bridge_timings ti_ths8134_dac_timings = {
+	/* From timing diagram, datasheet page 9 */
+	.sampling_edge = DRM_BUS_FLAG_PIXDATA_POSEDGE,
+	/* From datasheet, page 12 */
+	.setup_time_ps = 3000,
+	/* I guess this means latched input */
+	.hold_time_ps = 0,
+};
+
+/*
+ * Information taken from the THS8135 datasheet named "SLAS343B", dated
+ * May 2001, revised April 2013.
+ */
+static const struct drm_bridge_timings ti_ths8135_dac_timings = {
+	/* From timing diagram, datasheet page 14 */
+	.sampling_edge = DRM_BUS_FLAG_PIXDATA_POSEDGE,
+	/* From datasheet, page 16 */
+	.setup_time_ps = 2000,
+	.hold_time_ps = 500,
+};
+
 static const struct of_device_id dumb_vga_match[] = {
-	{ .compatible = "dumb-vga-dac" },
-	{ .compatible = "adi,adv7123" },
-	{ .compatible = "ti,ths8135" },
+	{
+		.compatible = "dumb-vga-dac",
+		.data = NULL,
+	},
+	{
+		.compatible = "adi,adv7123",
+		.data = &default_dac_timings,
+	},
+	{
+		.compatible = "ti,ths8135",
+		.data = &ti_ths8135_dac_timings,
+	},
+	{
+		.compatible = "ti,ths8134",
+		.data = &ti_ths8134_dac_timings,
+	},
 	{},
 };
 MODULE_DEVICE_TABLE(of, dumb_vga_match);
diff --git a/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c b/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c
index d9cca4fd66ec..7bac101c285c 100644
--- a/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c
+++ b/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c
@@ -29,7 +29,10 @@
 #include <drm/bridge/dw_mipi_dsi.h>
 #include <video/mipi_display.h>
 
+#define HWVER_131			0x31333100	/* IP version 1.31 */
+
 #define DSI_VERSION			0x00
+#define VERSION				GENMASK(31, 8)
 
 #define DSI_PWR_UP			0x04
 #define RESET				0
@@ -136,10 +139,6 @@
 					 GEN_SW_0P_TX_LP)
 
 #define DSI_GEN_HDR			0x6c
-/* TODO These 2 defines will be reworked thanks to mipi_dsi_create_packet() */
-#define GEN_HDATA(data)			(((data) & 0xffff) << 8)
-#define GEN_HTYPE(type)			(((type) & 0xff) << 0)
-
 #define DSI_GEN_PLD_DATA		0x70
 
 #define DSI_CMD_PKT_STATUS		0x74
@@ -169,11 +168,12 @@
 #define PHY_CLKHS2LP_TIME(lbcc)		(((lbcc) & 0x3ff) << 16)
 #define PHY_CLKLP2HS_TIME(lbcc)		((lbcc) & 0x3ff)
 
-/* TODO Next register is slightly different between 1.30 & 1.31 IP version */
 #define DSI_PHY_TMR_CFG			0x9c
 #define PHY_HS2LP_TIME(lbcc)		(((lbcc) & 0xff) << 24)
 #define PHY_LP2HS_TIME(lbcc)		(((lbcc) & 0xff) << 16)
 #define MAX_RD_TIME(lbcc)		((lbcc) & 0x7fff)
+#define PHY_HS2LP_TIME_V131(lbcc)	(((lbcc) & 0x3ff) << 16)
+#define PHY_LP2HS_TIME_V131(lbcc)	((lbcc) & 0x3ff)
 
 #define DSI_PHY_RSTZ			0xa0
 #define PHY_DISFORCEPLL			0
@@ -212,7 +212,9 @@
 #define DSI_INT_ST1			0xc0
 #define DSI_INT_MSK0			0xc4
 #define DSI_INT_MSK1			0xc8
+
 #define DSI_PHY_TMR_RD_CFG		0xf4
+#define MAX_RD_TIME_V131(lbcc)		((lbcc) & 0x7fff)
 
 #define PHY_STATUS_TIMEOUT_US		10000
 #define CMD_PKT_STATUS_TIMEOUT_US	20000
@@ -359,52 +361,23 @@ static int dw_mipi_dsi_gen_pkt_hdr_write(struct dw_mipi_dsi *dsi, u32 hdr_val)
 	return 0;
 }
 
-static int dw_mipi_dsi_dcs_short_write(struct dw_mipi_dsi *dsi,
-				       const struct mipi_dsi_msg *msg)
+static int dw_mipi_dsi_write(struct dw_mipi_dsi *dsi,
+			     const struct mipi_dsi_packet *packet)
 {
-	const u8 *tx_buf = msg->tx_buf;
-	u16 data = 0;
+	const u8 *tx_buf = packet->payload;
+	int len = packet->payload_length, pld_data_bytes = sizeof(u32), ret;
+	__le32 word;
 	u32 val;
 
-	if (msg->tx_len > 0)
-		data |= tx_buf[0];
-	if (msg->tx_len > 1)
-		data |= tx_buf[1] << 8;
-
-	if (msg->tx_len > 2) {
-		dev_err(dsi->dev, "too long tx buf length %zu for short write\n",
-			msg->tx_len);
-		return -EINVAL;
-	}
-
-	val = GEN_HDATA(data) | GEN_HTYPE(msg->type);
-	return dw_mipi_dsi_gen_pkt_hdr_write(dsi, val);
-}
-
-static int dw_mipi_dsi_dcs_long_write(struct dw_mipi_dsi *dsi,
-				      const struct mipi_dsi_msg *msg)
-{
-	const u8 *tx_buf = msg->tx_buf;
-	int len = msg->tx_len, pld_data_bytes = sizeof(u32), ret;
-	u32 hdr_val = GEN_HDATA(msg->tx_len) | GEN_HTYPE(msg->type);
-	u32 remainder;
-	u32 val;
-
-	if (msg->tx_len < 3) {
-		dev_err(dsi->dev, "wrong tx buf length %zu for long write\n",
-			msg->tx_len);
-		return -EINVAL;
-	}
-
-	while (DIV_ROUND_UP(len, pld_data_bytes)) {
+	while (len) {
 		if (len < pld_data_bytes) {
-			remainder = 0;
-			memcpy(&remainder, tx_buf, len);
-			dsi_write(dsi, DSI_GEN_PLD_DATA, remainder);
+			word = 0;
+			memcpy(&word, tx_buf, len);
+			dsi_write(dsi, DSI_GEN_PLD_DATA, le32_to_cpu(word));
 			len = 0;
 		} else {
-			memcpy(&remainder, tx_buf, pld_data_bytes);
-			dsi_write(dsi, DSI_GEN_PLD_DATA, remainder);
+			memcpy(&word, tx_buf, pld_data_bytes);
+			dsi_write(dsi, DSI_GEN_PLD_DATA, le32_to_cpu(word));
 			tx_buf += pld_data_bytes;
 			len -= pld_data_bytes;
 		}
@@ -419,40 +392,74 @@ static int dw_mipi_dsi_dcs_long_write(struct dw_mipi_dsi *dsi,
 		}
 	}
 
-	return dw_mipi_dsi_gen_pkt_hdr_write(dsi, hdr_val);
+	word = 0;
+	memcpy(&word, packet->header, sizeof(packet->header));
+	return dw_mipi_dsi_gen_pkt_hdr_write(dsi, le32_to_cpu(word));
+}
+
+static int dw_mipi_dsi_read(struct dw_mipi_dsi *dsi,
+			    const struct mipi_dsi_msg *msg)
+{
+	int i, j, ret, len = msg->rx_len;
+	u8 *buf = msg->rx_buf;
+	u32 val;
+
+	/* Wait end of the read operation */
+	ret = readl_poll_timeout(dsi->base + DSI_CMD_PKT_STATUS,
+				 val, !(val & GEN_RD_CMD_BUSY),
+				 1000, CMD_PKT_STATUS_TIMEOUT_US);
+	if (ret) {
+		dev_err(dsi->dev, "Timeout during read operation\n");
+		return ret;
+	}
+
+	for (i = 0; i < len; i += 4) {
+		/* Read fifo must not be empty before all bytes are read */
+		ret = readl_poll_timeout(dsi->base + DSI_CMD_PKT_STATUS,
+					 val, !(val & GEN_PLD_R_EMPTY),
+					 1000, CMD_PKT_STATUS_TIMEOUT_US);
+		if (ret) {
+			dev_err(dsi->dev, "Read payload FIFO is empty\n");
+			return ret;
+		}
+
+		val = dsi_read(dsi, DSI_GEN_PLD_DATA);
+		for (j = 0; j < 4 && j + i < len; j++)
+			buf[i + j] = val >> (8 * j);
+	}
+
+	return ret;
 }
 
 static ssize_t dw_mipi_dsi_host_transfer(struct mipi_dsi_host *host,
 					 const struct mipi_dsi_msg *msg)
 {
 	struct dw_mipi_dsi *dsi = host_to_dsi(host);
-	int ret;
+	struct mipi_dsi_packet packet;
+	int ret, nb_bytes;
+
+	ret = mipi_dsi_create_packet(&packet, msg);
+	if (ret) {
+		dev_err(dsi->dev, "failed to create packet: %d\n", ret);
+		return ret;
+	}
 
-	/*
-	 * TODO dw drv improvements
-	 * use mipi_dsi_create_packet() instead of all following
-	 * functions and code (no switch cases, no
-	 * dw_mipi_dsi_dcs_short_write(), only the loop in long_write...)
-	 * and use packet.header...
-	 */
 	dw_mipi_message_config(dsi, msg);
 
-	switch (msg->type) {
-	case MIPI_DSI_DCS_SHORT_WRITE:
-	case MIPI_DSI_DCS_SHORT_WRITE_PARAM:
-	case MIPI_DSI_SET_MAXIMUM_RETURN_PACKET_SIZE:
-		ret = dw_mipi_dsi_dcs_short_write(dsi, msg);
-		break;
-	case MIPI_DSI_DCS_LONG_WRITE:
-		ret = dw_mipi_dsi_dcs_long_write(dsi, msg);
-		break;
-	default:
-		dev_err(dsi->dev, "unsupported message type 0x%02x\n",
-			msg->type);
-		ret = -EINVAL;
+	ret = dw_mipi_dsi_write(dsi, &packet);
+	if (ret)
+		return ret;
+
+	if (msg->rx_buf && msg->rx_len) {
+		ret = dw_mipi_dsi_read(dsi, msg);
+		if (ret)
+			return ret;
+		nb_bytes = msg->rx_len;
+	} else {
+		nb_bytes = packet.size;
 	}
 
-	return ret;
+	return nb_bytes;
 }
 
 static const struct mipi_dsi_host_ops dw_mipi_dsi_host_ops = {
@@ -658,6 +665,8 @@ static void dw_mipi_dsi_vertical_timing_config(struct dw_mipi_dsi *dsi,
 
 static void dw_mipi_dsi_dphy_timing_config(struct dw_mipi_dsi *dsi)
 {
+	u32 hw_version;
+
 	/*
 	 * TODO dw drv improvements
 	 * data & clock lane timers should be computed according to panel
@@ -665,8 +674,17 @@ static void dw_mipi_dsi_dphy_timing_config(struct dw_mipi_dsi *dsi)
 	 * note: DSI_PHY_TMR_CFG.MAX_RD_TIME should be in line with
 	 * DSI_CMD_MODE_CFG.MAX_RD_PKT_SIZE_LP (see CMD_MODE_ALL_LP)
 	 */
-	dsi_write(dsi, DSI_PHY_TMR_CFG, PHY_HS2LP_TIME(0x40)
-		  | PHY_LP2HS_TIME(0x40) | MAX_RD_TIME(10000));
+
+	hw_version = dsi_read(dsi, DSI_VERSION) & VERSION;
+
+	if (hw_version >= HWVER_131) {
+		dsi_write(dsi, DSI_PHY_TMR_CFG, PHY_HS2LP_TIME_V131(0x40) |
+			  PHY_LP2HS_TIME_V131(0x40));
+		dsi_write(dsi, DSI_PHY_TMR_RD_CFG, MAX_RD_TIME_V131(10000));
+	} else {
+		dsi_write(dsi, DSI_PHY_TMR_CFG, PHY_HS2LP_TIME(0x40) |
+			  PHY_LP2HS_TIME(0x40) | MAX_RD_TIME(10000));
+	}
 
 	dsi_write(dsi, DSI_PHY_TMR_LPCLK_CFG, PHY_CLKHS2LP_TIME(0x40)
 		  | PHY_CLKLP2HS_TIME(0x40));
@@ -746,9 +764,9 @@ static void dw_mipi_dsi_bridge_post_disable(struct drm_bridge *bridge)
 	pm_runtime_put(dsi->dev);
 }
 
-void dw_mipi_dsi_bridge_mode_set(struct drm_bridge *bridge,
-				 struct drm_display_mode *mode,
-				 struct drm_display_mode *adjusted_mode)
+static void dw_mipi_dsi_bridge_mode_set(struct drm_bridge *bridge,
+					struct drm_display_mode *mode,
+					struct drm_display_mode *adjusted_mode)
 {
 	struct dw_mipi_dsi *dsi = bridge_to_dsi(bridge);
 	const struct dw_mipi_dsi_phy_ops *phy_ops = dsi->plat_data->phy_ops;
@@ -922,8 +940,6 @@ __dw_mipi_dsi_probe(struct platform_device *pdev,
 	dsi->bridge.of_node = pdev->dev.of_node;
 #endif
 
-	dev_set_drvdata(dev, dsi);
-
 	return dsi;
 }
 
@@ -935,23 +951,16 @@ static void __dw_mipi_dsi_remove(struct dw_mipi_dsi *dsi)
 /*
  * Probe/remove API, used from platforms based on the DRM bridge API.
  */
-int dw_mipi_dsi_probe(struct platform_device *pdev,
-		      const struct dw_mipi_dsi_plat_data *plat_data)
+struct dw_mipi_dsi *
+dw_mipi_dsi_probe(struct platform_device *pdev,
+		  const struct dw_mipi_dsi_plat_data *plat_data)
 {
-	struct dw_mipi_dsi *dsi;
-
-	dsi = __dw_mipi_dsi_probe(pdev, plat_data);
-	if (IS_ERR(dsi))
-		return PTR_ERR(dsi);
-
-	return 0;
+	return __dw_mipi_dsi_probe(pdev, plat_data);
 }
 EXPORT_SYMBOL_GPL(dw_mipi_dsi_probe);
 
-void dw_mipi_dsi_remove(struct platform_device *pdev)
+void dw_mipi_dsi_remove(struct dw_mipi_dsi *dsi)
 {
-	struct dw_mipi_dsi *dsi = platform_get_drvdata(pdev);
-
 	mipi_dsi_host_unregister(&dsi->dsi_host);
 
 	__dw_mipi_dsi_remove(dsi);
@@ -961,31 +970,30 @@ EXPORT_SYMBOL_GPL(dw_mipi_dsi_remove);
 /*
  * Bind/unbind API, used from platforms based on the component framework.
  */
-int dw_mipi_dsi_bind(struct platform_device *pdev, struct drm_encoder *encoder,
-		     const struct dw_mipi_dsi_plat_data *plat_data)
+struct dw_mipi_dsi *
+dw_mipi_dsi_bind(struct platform_device *pdev, struct drm_encoder *encoder,
+		 const struct dw_mipi_dsi_plat_data *plat_data)
 {
 	struct dw_mipi_dsi *dsi;
 	int ret;
 
 	dsi = __dw_mipi_dsi_probe(pdev, plat_data);
 	if (IS_ERR(dsi))
-		return PTR_ERR(dsi);
+		return dsi;
 
 	ret = drm_bridge_attach(encoder, &dsi->bridge, NULL);
 	if (ret) {
-		dw_mipi_dsi_remove(pdev);
+		dw_mipi_dsi_remove(dsi);
 		DRM_ERROR("Failed to initialize bridge with drm\n");
-		return ret;
+		return ERR_PTR(ret);
 	}
 
-	return 0;
+	return dsi;
 }
 EXPORT_SYMBOL_GPL(dw_mipi_dsi_bind);
 
-void dw_mipi_dsi_unbind(struct device *dev)
+void dw_mipi_dsi_unbind(struct dw_mipi_dsi *dsi)
 {
-	struct dw_mipi_dsi *dsi = dev_get_drvdata(dev);
-
 	__dw_mipi_dsi_remove(dsi);
 }
 EXPORT_SYMBOL_GPL(dw_mipi_dsi_unbind);