[PATCH v2 07/10] drm/imx: atomic phase 3 step 2: Use atomic configuration

[Liu Ying <gnuiyl@gmail.com>]

Replacing drm_crtc_helper_set_config() by drm_atomic_helper_set_config()
and converting the suspend/resume operations to atomic makes us be able
to use atomic configurations.  All of these allow us to remove the
crtc_funcs->mode_set callback as it is no longer used.  Also, we may remove
all the encoders' ->prepare callbacks as they can be replaced by ->disable.
In consequence, the bus_format, bus_flags, di_vsync_pin and di_hsync_pin
settings are moved from ->prepare to structure imx_encoder.  Furthermore,
switching to the pure atomic version of set_config callback means that we
may implement CRTC/plane atomic checks by using the new CRTC/plane states
instead of the legacy ones and we may remove the private ipu_crtc->enabled
state which was left there for the transitional atomic helpers in phase 1.
Last, the legacy function drm_helper_disable_unused_functions() is removed
from ->load in order not to confuse the atomic driver.

Signed-off-by: Liu Ying <gnuiyl@gmail.com>
---
v1->v2:
* Handle the newly introduced bus_flags via imx_encoder after the rebasing.
* Remove the legacy function drm_helper_disable_unused_functions() from
  ->load in order not to confuse the atomic driver.

 drivers/gpu/drm/imx/dw_hdmi-imx.c      |  18 +++---
 drivers/gpu/drm/imx/imx-drm-core.c     |  53 ++++------------
 drivers/gpu/drm/imx/imx-drm.h          |  18 +++---
 drivers/gpu/drm/imx/imx-ldb.c          | 109 +++++++++++++++------------------
 drivers/gpu/drm/imx/imx-tve.c          |  58 +++++++-----------
 drivers/gpu/drm/imx/ipuv3-crtc.c       |  69 ++++++---------------
 drivers/gpu/drm/imx/ipuv3-plane.c      |  23 +++----
 drivers/gpu/drm/imx/parallel-display.c |  56 +++++++++--------
 8 files changed, 163 insertions(+), 241 deletions(-)

diff --git a/drivers/gpu/drm/imx/dw_hdmi-imx.c b/drivers/gpu/drm/imx/dw_hdmi-imx.c
index a24631fd..5f64674 100644
--- a/drivers/gpu/drm/imx/dw_hdmi-imx.c
+++ b/drivers/gpu/drm/imx/dw_hdmi-imx.c
@@ -22,9 +22,11 @@
 
 #include "imx-drm.h"
 
+#define imx_enc_to_imx_hdmi(x) container_of(x, struct imx_hdmi, imx_encoder)
+
 struct imx_hdmi {
 	struct device *dev;
-	struct drm_encoder encoder;
+	struct imx_drm_encoder imx_encoder;
 	struct regmap *regmap;
 };
 
@@ -117,7 +119,8 @@ static void dw_hdmi_imx_encoder_mode_set(struct drm_encoder *encoder,
 
 static void dw_hdmi_imx_encoder_commit(struct drm_encoder *encoder)
 {
-	struct imx_hdmi *hdmi = container_of(encoder, struct imx_hdmi, encoder);
+	struct imx_drm_encoder *imx_encoder = enc_to_imx_enc(encoder);
+	struct imx_hdmi *hdmi = imx_enc_to_imx_hdmi(imx_encoder);
 	int mux = drm_of_encoder_active_port_id(hdmi->dev->of_node, encoder);
 
 	regmap_update_bits(hdmi->regmap, IOMUXC_GPR3,
@@ -125,14 +128,8 @@ static void dw_hdmi_imx_encoder_commit(struct drm_encoder *encoder)
 			   mux << IMX6Q_GPR3_HDMI_MUX_CTL_SHIFT);
 }
 
-static void dw_hdmi_imx_encoder_prepare(struct drm_encoder *encoder)
-{
-	imx_drm_set_bus_format(encoder, MEDIA_BUS_FMT_RGB888_1X24);
-}
-
 static const struct drm_encoder_helper_funcs dw_hdmi_imx_encoder_helper_funcs = {
 	.mode_set   = dw_hdmi_imx_encoder_mode_set,
-	.prepare    = dw_hdmi_imx_encoder_prepare,
 	.commit     = dw_hdmi_imx_encoder_commit,
 	.disable    = dw_hdmi_imx_encoder_disable,
 };
@@ -215,7 +212,10 @@ static int dw_hdmi_imx_bind(struct device *dev, struct device *master,
 	match = of_match_node(dw_hdmi_imx_dt_ids, pdev->dev.of_node);
 	plat_data = match->data;
 	hdmi->dev = &pdev->dev;
-	encoder = &hdmi->encoder;
+	encoder = &hdmi->imx_encoder.encoder;
+	hdmi->imx_encoder.bus_format = MEDIA_BUS_FMT_RGB888_1X24;
+	hdmi->imx_encoder.di_hsync_pin = 2;
+	hdmi->imx_encoder.di_vsync_pin = 3;
 
 	irq = platform_get_irq(pdev, 0);
 	if (irq < 0)
diff --git a/drivers/gpu/drm/imx/imx-drm-core.c b/drivers/gpu/drm/imx/imx-drm-core.c
index 5893cbc..2a2ab8c 100644
--- a/drivers/gpu/drm/imx/imx-drm-core.c
+++ b/drivers/gpu/drm/imx/imx-drm-core.c
@@ -42,6 +42,7 @@ struct imx_drm_device {
 	struct imx_drm_crtc			*crtc[MAX_CRTC];
 	unsigned int				pipes;
 	struct drm_fbdev_cma			*fbhelper;
+	struct drm_atomic_state			*state;
 };
 
 struct imx_drm_crtc {
@@ -86,45 +87,6 @@ static int imx_drm_driver_unload(struct drm_device *drm)
 	return 0;
 }
 
-static struct imx_drm_crtc *imx_drm_find_crtc(struct drm_crtc *crtc)
-{
-	struct imx_drm_device *imxdrm = crtc->dev->dev_private;
-	unsigned i;
-
-	for (i = 0; i < MAX_CRTC; i++)
-		if (imxdrm->crtc[i] && imxdrm->crtc[i]->crtc == crtc)
-			return imxdrm->crtc[i];
-
-	return NULL;
-}
-
-int imx_drm_set_bus_config(struct drm_encoder *encoder, u32 bus_format,
-		int hsync_pin, int vsync_pin, u32 bus_flags)
-{
-	struct imx_drm_crtc_helper_funcs *helper;
-	struct imx_drm_crtc *imx_crtc;
-
-	imx_crtc = imx_drm_find_crtc(encoder->crtc);
-	if (!imx_crtc)
-		return -EINVAL;
-
-	helper = &imx_crtc->imx_drm_helper_funcs;
-	if (helper->set_interface_pix_fmt)
-		return helper->set_interface_pix_fmt(encoder->crtc,
-					bus_format, hsync_pin, vsync_pin,
-					bus_flags);
-	return 0;
-}
-EXPORT_SYMBOL_GPL(imx_drm_set_bus_config);
-
-int imx_drm_set_bus_format(struct drm_encoder *encoder, u32 bus_format)
-{
-	return imx_drm_set_bus_config(encoder, bus_format, 2, 3,
-				      DRM_BUS_FLAG_DE_HIGH |
-				      DRM_BUS_FLAG_PIXDATA_NEGEDGE);
-}
-EXPORT_SYMBOL_GPL(imx_drm_set_bus_format);
-
 int imx_drm_crtc_vblank_get(struct imx_drm_crtc *imx_drm_crtc)
 {
 	return drm_crtc_vblank_get(imx_drm_crtc->crtc);
@@ -294,7 +256,6 @@ static int imx_drm_driver_load(struct drm_device *drm, unsigned long flags)
 		dev_warn(drm->dev, "Invalid legacyfb_depth.  Defaulting to 16bpp\n");
 		legacyfb_depth = 16;
 	}
-	drm_helper_disable_unused_functions(drm);
 	imxdrm->fbhelper = drm_fbdev_cma_init(drm, legacyfb_depth,
 				drm->mode_config.num_crtc, MAX_CRTC);
 	if (IS_ERR(imxdrm->fbhelper)) {
@@ -497,6 +458,7 @@ static int imx_drm_platform_remove(struct platform_device *pdev)
 static int imx_drm_suspend(struct device *dev)
 {
 	struct drm_device *drm_dev = dev_get_drvdata(dev);
+	struct imx_drm_device *imxdrm;
 
 	/* The drm_dev is NULL before .load hook is called */
 	if (drm_dev == NULL)
@@ -504,17 +466,26 @@ static int imx_drm_suspend(struct device *dev)
 
 	drm_kms_helper_poll_disable(drm_dev);
 
+	imxdrm = drm_dev->dev_private;
+	imxdrm->state = drm_atomic_helper_suspend(drm_dev);
+	if (IS_ERR(imxdrm->state)) {
+		drm_kms_helper_poll_enable(drm_dev);
+		return PTR_ERR(imxdrm->state);
+	}
+
 	return 0;
 }
 
 static int imx_drm_resume(struct device *dev)
 {
 	struct drm_device *drm_dev = dev_get_drvdata(dev);
+	struct imx_drm_device *imx_drm;
 
 	if (drm_dev == NULL)
 		return 0;
 
-	drm_helper_resume_force_mode(drm_dev);
+	imx_drm = drm_dev->dev_private;
+	drm_atomic_helper_resume(drm_dev, imx_drm->state);
 	drm_kms_helper_poll_enable(drm_dev);
 
 	return 0;
diff --git a/drivers/gpu/drm/imx/imx-drm.h b/drivers/gpu/drm/imx/imx-drm.h
index 74320a1..39cef15 100644
--- a/drivers/gpu/drm/imx/imx-drm.h
+++ b/drivers/gpu/drm/imx/imx-drm.h
@@ -15,12 +15,19 @@ struct platform_device;
 
 unsigned int imx_drm_crtc_id(struct imx_drm_crtc *crtc);
 
+struct imx_drm_encoder {
+	struct drm_encoder			encoder;
+	u32					bus_format;
+	u32					bus_flags;
+	int					di_hsync_pin;
+	int					di_vsync_pin;
+};
+
+#define enc_to_imx_enc(x) container_of(x, struct imx_drm_encoder, encoder)
+
 struct imx_drm_crtc_helper_funcs {
 	int (*enable_vblank)(struct drm_crtc *crtc);
 	void (*disable_vblank)(struct drm_crtc *crtc);
-	int (*set_interface_pix_fmt)(struct drm_crtc *crtc,
-			u32 bus_format, int hsync_pin, int vsync_pin,
-			u32 bus_flags);
 	const struct drm_crtc_helper_funcs *crtc_helper_funcs;
 	const struct drm_crtc_funcs *crtc_funcs;
 };
@@ -42,11 +49,6 @@ void imx_drm_mode_config_init(struct drm_device *drm);
 
 struct drm_gem_cma_object *imx_drm_fb_get_obj(struct drm_framebuffer *fb);
 
-int imx_drm_set_bus_config(struct drm_encoder *encoder, u32 bus_format,
-		int hsync_pin, int vsync_pin, u32 bus_flags);
-int imx_drm_set_bus_format(struct drm_encoder *encoder,
-		u32 bus_format);
-
 int imx_drm_encoder_parse_of(struct drm_device *drm,
 	struct drm_encoder *encoder, struct device_node *np);
 
diff --git a/drivers/gpu/drm/imx/imx-ldb.c b/drivers/gpu/drm/imx/imx-ldb.c
index 12bf368..4a98eaa 100644
--- a/drivers/gpu/drm/imx/imx-ldb.c
+++ b/drivers/gpu/drm/imx/imx-ldb.c
@@ -51,14 +51,15 @@
 #define LDB_BGREF_RMODE_INT		(1 << 15)
 
 #define con_to_imx_ldb_ch(x) container_of(x, struct imx_ldb_channel, connector)
-#define enc_to_imx_ldb_ch(x) container_of(x, struct imx_ldb_channel, encoder)
+#define imx_enc_to_imx_ldb_ch(x)	\
+			container_of(x, struct imx_ldb_channel, imx_encoder)
 
 struct imx_ldb;
 
 struct imx_ldb_channel {
 	struct imx_ldb *ldb;
 	struct drm_connector connector;
-	struct drm_encoder encoder;
+	struct imx_drm_encoder imx_encoder;
 	struct drm_panel *panel;
 	struct device_node *child;
 	struct i2c_adapter *ddc;
@@ -67,7 +68,6 @@ struct imx_ldb_channel {
 	int edid_len;
 	struct drm_display_mode mode;
 	int mode_valid;
-	int bus_format;
 };
 
 struct bus_mux {
@@ -104,8 +104,8 @@ static int imx_ldb_connector_get_modes(struct drm_connector *connector)
 		struct drm_display_info *di = &connector->display_info;
 
 		num_modes = imx_ldb_ch->panel->funcs->get_modes(imx_ldb_ch->panel);
-		if (!imx_ldb_ch->bus_format && di->num_bus_formats)
-			imx_ldb_ch->bus_format = di->bus_formats[0];
+		if (!imx_ldb_ch->imx_encoder.bus_format && di->num_bus_formats)
+			imx_ldb_ch->imx_encoder.bus_format = di->bus_formats[0];
 		if (num_modes > 0)
 			return num_modes;
 	}
@@ -139,7 +139,7 @@ static struct drm_encoder *imx_ldb_connector_best_encoder(
 {
 	struct imx_ldb_channel *imx_ldb_ch = con_to_imx_ldb_ch(connector);
 
-	return &imx_ldb_ch->encoder;
+	return &imx_ldb_ch->imx_encoder.encoder;
 }
 
 static void imx_ldb_encoder_dpms(struct drm_encoder *encoder, int mode)
@@ -174,45 +174,10 @@ static void imx_ldb_set_clock(struct imx_ldb *ldb, int mux, int chno,
 			chno);
 }
 
-static void imx_ldb_encoder_prepare(struct drm_encoder *encoder)
-{
-	struct imx_ldb_channel *imx_ldb_ch = enc_to_imx_ldb_ch(encoder);
-	struct imx_ldb *ldb = imx_ldb_ch->ldb;
-	int dual = ldb->ldb_ctrl & LDB_SPLIT_MODE_EN;
-	u32 bus_format;
-
-	switch (imx_ldb_ch->bus_format) {
-	default:
-		dev_warn(ldb->dev,
-			 "could not determine data mapping, default to 18-bit \"spwg\"\n");
-		/* fallthrough */
-	case MEDIA_BUS_FMT_RGB666_1X7X3_SPWG:
-		bus_format = MEDIA_BUS_FMT_RGB666_1X18;
-		break;
-	case MEDIA_BUS_FMT_RGB888_1X7X4_SPWG:
-		bus_format = MEDIA_BUS_FMT_RGB888_1X24;
-		if (imx_ldb_ch->chno == 0 || dual)
-			ldb->ldb_ctrl |= LDB_DATA_WIDTH_CH0_24;
-		if (imx_ldb_ch->chno == 1 || dual)
-			ldb->ldb_ctrl |= LDB_DATA_WIDTH_CH1_24;
-		break;
-	case MEDIA_BUS_FMT_RGB888_1X7X4_JEIDA:
-		bus_format = MEDIA_BUS_FMT_RGB888_1X24;
-		if (imx_ldb_ch->chno == 0 || dual)
-			ldb->ldb_ctrl |= LDB_DATA_WIDTH_CH0_24 |
-					 LDB_BIT_MAP_CH0_JEIDA;
-		if (imx_ldb_ch->chno == 1 || dual)
-			ldb->ldb_ctrl |= LDB_DATA_WIDTH_CH1_24 |
-					 LDB_BIT_MAP_CH1_JEIDA;
-		break;
-	}
-
-	imx_drm_set_bus_format(encoder, bus_format);
-}
-
 static void imx_ldb_encoder_commit(struct drm_encoder *encoder)
 {
-	struct imx_ldb_channel *imx_ldb_ch = enc_to_imx_ldb_ch(encoder);
+	struct imx_drm_encoder *imx_encoder = enc_to_imx_enc(encoder);
+	struct imx_ldb_channel *imx_ldb_ch = imx_enc_to_imx_ldb_ch(imx_encoder);
 	struct imx_ldb *ldb = imx_ldb_ch->ldb;
 	int dual = ldb->ldb_ctrl & LDB_SPLIT_MODE_EN;
 	int mux = drm_of_encoder_active_port_id(imx_ldb_ch->child, encoder);
@@ -260,7 +225,8 @@ static void imx_ldb_encoder_mode_set(struct drm_encoder *encoder,
 			 struct drm_display_mode *orig_mode,
 			 struct drm_display_mode *mode)
 {
-	struct imx_ldb_channel *imx_ldb_ch = enc_to_imx_ldb_ch(encoder);
+	struct imx_drm_encoder *imx_encoder = enc_to_imx_enc(encoder);
+	struct imx_ldb_channel *imx_ldb_ch = imx_enc_to_imx_ldb_ch(imx_encoder);
 	struct imx_ldb *ldb = imx_ldb_ch->ldb;
 	int dual = ldb->ldb_ctrl & LDB_SPLIT_MODE_EN;
 	unsigned long serial_clk;
@@ -303,7 +269,8 @@ static void imx_ldb_encoder_mode_set(struct drm_encoder *encoder,
 
 static void imx_ldb_encoder_disable(struct drm_encoder *encoder)
 {
-	struct imx_ldb_channel *imx_ldb_ch = enc_to_imx_ldb_ch(encoder);
+	struct imx_drm_encoder *imx_encoder = enc_to_imx_enc(encoder);
+	struct imx_ldb_channel *imx_ldb_ch = imx_enc_to_imx_ldb_ch(imx_encoder);
 	struct imx_ldb *ldb = imx_ldb_ch->ldb;
 	int mux, ret;
 
@@ -379,7 +346,6 @@ static const struct drm_encoder_funcs imx_ldb_encoder_funcs = {
 
 static const struct drm_encoder_helper_funcs imx_ldb_encoder_helper_funcs = {
 	.dpms = imx_ldb_encoder_dpms,
-	.prepare = imx_ldb_encoder_prepare,
 	.commit = imx_ldb_encoder_commit,
 	.mode_set = imx_ldb_encoder_mode_set,
 	.disable = imx_ldb_encoder_disable,
@@ -406,7 +372,7 @@ static int imx_ldb_register(struct drm_device *drm,
 	struct imx_ldb *ldb = imx_ldb_ch->ldb;
 	int ret;
 
-	ret = imx_drm_encoder_parse_of(drm, &imx_ldb_ch->encoder,
+	ret = imx_drm_encoder_parse_of(drm, &imx_ldb_ch->imx_encoder.encoder,
 				       imx_ldb_ch->child);
 	if (ret)
 		return ret;
@@ -421,10 +387,10 @@ static int imx_ldb_register(struct drm_device *drm,
 			return ret;
 	}
 
-	drm_encoder_helper_add(&imx_ldb_ch->encoder,
+	drm_encoder_helper_add(&imx_ldb_ch->imx_encoder.encoder,
 			&imx_ldb_encoder_helper_funcs);
-	drm_encoder_init(drm, &imx_ldb_ch->encoder, &imx_ldb_encoder_funcs,
-			 DRM_MODE_ENCODER_LVDS, NULL);
+	drm_encoder_init(drm, &imx_ldb_ch->imx_encoder.encoder,
+			 &imx_ldb_encoder_funcs, DRM_MODE_ENCODER_LVDS, NULL);
 
 	drm_connector_helper_add(&imx_ldb_ch->connector,
 			&imx_ldb_connector_helper_funcs);
@@ -435,7 +401,7 @@ static int imx_ldb_register(struct drm_device *drm,
 		drm_panel_attach(imx_ldb_ch->panel, &imx_ldb_ch->connector);
 
 	drm_mode_connector_attach_encoder(&imx_ldb_ch->connector,
-			&imx_ldb_ch->encoder);
+			&imx_ldb_ch->imx_encoder.encoder);
 
 	return 0;
 }
@@ -564,6 +530,7 @@ static int imx_ldb_bind(struct device *dev, struct device *master, void *data)
 		struct imx_ldb_channel *channel;
 		struct device_node *ddc_node;
 		struct device_node *ep;
+		int bus_format;
 
 		ret = of_property_read_u32(child, "reg", &i);
 		if (ret || i < 0 || i > 1)
@@ -636,21 +603,46 @@ static int imx_ldb_bind(struct device *dev, struct device *master, void *data)
 			}
 		}
 
-		channel->bus_format = of_get_bus_format(dev, child);
-		if (channel->bus_format == -EINVAL) {
+		bus_format = of_get_bus_format(dev, child);
+		if (bus_format == -EINVAL) {
 			/*
 			 * If no bus format was specified in the device tree,
 			 * we can still get it from the connected panel later.
 			 */
 			if (channel->panel && channel->panel->funcs &&
 			    channel->panel->funcs->get_modes)
-				channel->bus_format = 0;
+				bus_format = 0;
 		}
-		if (channel->bus_format < 0) {
+		if (bus_format < 0) {
 			dev_err(dev, "could not determine data mapping: %d\n",
-				channel->bus_format);
-			return channel->bus_format;
+				bus_format);
+			return bus_format;
 		}
+		switch (bus_format) {
+		case MEDIA_BUS_FMT_RGB666_1X7X3_SPWG:
+			bus_format = MEDIA_BUS_FMT_RGB666_1X18;
+			break;
+		case MEDIA_BUS_FMT_RGB888_1X7X4_SPWG:
+			bus_format = MEDIA_BUS_FMT_RGB888_1X24;
+			if (i == 0 || dual)
+				imx_ldb->ldb_ctrl |= LDB_DATA_WIDTH_CH0_24;
+			if (i == 1 || dual)
+				imx_ldb->ldb_ctrl |= LDB_DATA_WIDTH_CH1_24;
+			break;
+		case MEDIA_BUS_FMT_RGB888_1X7X4_JEIDA:
+			bus_format = MEDIA_BUS_FMT_RGB888_1X24;
+			if (i == 0 || dual)
+				imx_ldb->ldb_ctrl |= LDB_DATA_WIDTH_CH0_24 |
+						     LDB_BIT_MAP_CH0_JEIDA;
+			if (i == 1 || dual)
+				imx_ldb->ldb_ctrl |= LDB_DATA_WIDTH_CH1_24 |
+						     LDB_BIT_MAP_CH1_JEIDA;
+			break;
+		}
+		channel->imx_encoder.bus_format = bus_format;
+
+		channel->imx_encoder.di_hsync_pin = 2;
+		channel->imx_encoder.di_vsync_pin = 3;
 
 		ret = imx_ldb_register(drm, channel);
 		if (ret)
@@ -675,7 +667,8 @@ static void imx_ldb_unbind(struct device *dev, struct device *master,
 			continue;
 
 		channel->connector.funcs->destroy(&channel->connector);
-		channel->encoder.funcs->destroy(&channel->encoder);
+		channel->imx_encoder.encoder.funcs->destroy(
+					&channel->imx_encoder.encoder);
 
 		kfree(channel->edid);
 		i2c_put_adapter(channel->ddc);
diff --git a/drivers/gpu/drm/imx/imx-tve.c b/drivers/gpu/drm/imx/imx-tve.c
index 0b0aeee..82a1edd 100644
--- a/drivers/gpu/drm/imx/imx-tve.c
+++ b/drivers/gpu/drm/imx/imx-tve.c
@@ -99,7 +99,7 @@
 #define TVE_TVDAC_TEST_MODE_MASK	(0x7 << 0)
 
 #define con_to_tve(x) container_of(x, struct imx_tve, connector)
-#define enc_to_tve(x) container_of(x, struct imx_tve, encoder)
+#define imx_enc_to_tve(x) container_of(x, struct imx_tve, imx_encoder)
 
 enum {
 	TVE_MODE_TVOUT,
@@ -108,7 +108,7 @@ enum {
 
 struct imx_tve {
 	struct drm_connector connector;
-	struct drm_encoder encoder;
+	struct imx_drm_encoder imx_encoder;
 	struct device *dev;
 	spinlock_t lock;	/* register lock */
 	bool enabled;
@@ -121,8 +121,6 @@ struct imx_tve {
 	struct clk *di_sel_clk;
 	struct clk_hw clk_hw_di;
 	struct clk *di_clk;
-	int vsync_pin;
-	int hsync_pin;
 };
 
 static void tve_lock(void *__tve)
@@ -273,12 +271,13 @@ static struct drm_encoder *imx_tve_connector_best_encoder(
 {
 	struct imx_tve *tve = con_to_tve(connector);
 
-	return &tve->encoder;
+	return &tve->imx_encoder.encoder;
 }
 
 static void imx_tve_encoder_dpms(struct drm_encoder *encoder, int mode)
 {
-	struct imx_tve *tve = enc_to_tve(encoder);
+	struct imx_drm_encoder *imx_encoder = enc_to_imx_enc(encoder);
+	struct imx_tve *tve = imx_enc_to_tve(imx_encoder);
 	int ret;
 
 	ret = regmap_update_bits(tve->regmap, TVE_COM_CONF_REG,
@@ -287,30 +286,12 @@ static void imx_tve_encoder_dpms(struct drm_encoder *encoder, int mode)
 		dev_err(tve->dev, "failed to disable TVOUT: %d\n", ret);
 }
 
-static void imx_tve_encoder_prepare(struct drm_encoder *encoder)
-{
-	struct imx_tve *tve = enc_to_tve(encoder);
-
-	tve_disable(tve);
-
-	switch (tve->mode) {
-	case TVE_MODE_VGA:
-		imx_drm_set_bus_config(encoder, MEDIA_BUS_FMT_GBR888_1X24,
-				       tve->hsync_pin, tve->vsync_pin,
-				       DRM_BUS_FLAG_DE_HIGH |
-				       DRM_BUS_FLAG_PIXDATA_NEGEDGE);
-		break;
-	case TVE_MODE_TVOUT:
-		imx_drm_set_bus_format(encoder, MEDIA_BUS_FMT_YUV8_1X24);
-		break;
-	}
-}
-
 static void imx_tve_encoder_mode_set(struct drm_encoder *encoder,
 				     struct drm_display_mode *orig_mode,
 				     struct drm_display_mode *mode)
 {
-	struct imx_tve *tve = enc_to_tve(encoder);
+	struct imx_drm_encoder *imx_encoder = enc_to_imx_enc(encoder);
+	struct imx_tve *tve = imx_enc_to_tve(imx_encoder);
 	unsigned long rounded_rate;
 	unsigned long rate;
 	int div = 1;
@@ -344,14 +325,16 @@ static void imx_tve_encoder_mode_set(struct drm_encoder *encoder,
 
 static void imx_tve_encoder_commit(struct drm_encoder *encoder)
 {
-	struct imx_tve *tve = enc_to_tve(encoder);
+	struct imx_drm_encoder *imx_encoder = enc_to_imx_enc(encoder);
+	struct imx_tve *tve = imx_enc_to_tve(imx_encoder);
 
 	tve_enable(tve);
 }
 
 static void imx_tve_encoder_disable(struct drm_encoder *encoder)
 {
-	struct imx_tve *tve = enc_to_tve(encoder);
+	struct imx_drm_encoder *imx_encoder = enc_to_imx_enc(encoder);
+	struct imx_tve *tve = imx_enc_to_tve(imx_encoder);
 
 	tve_disable(tve);
 }
@@ -378,7 +361,6 @@ static const struct drm_encoder_funcs imx_tve_encoder_funcs = {
 
 static const struct drm_encoder_helper_funcs imx_tve_encoder_helper_funcs = {
 	.dpms = imx_tve_encoder_dpms,
-	.prepare = imx_tve_encoder_prepare,
 	.mode_set = imx_tve_encoder_mode_set,
 	.commit = imx_tve_encoder_commit,
 	.disable = imx_tve_encoder_disable,
@@ -499,13 +481,14 @@ static int imx_tve_register(struct drm_device *drm, struct imx_tve *tve)
 	encoder_type = tve->mode == TVE_MODE_VGA ?
 				DRM_MODE_ENCODER_DAC : DRM_MODE_ENCODER_TVDAC;
 
-	ret = imx_drm_encoder_parse_of(drm, &tve->encoder,
+	ret = imx_drm_encoder_parse_of(drm, &tve->imx_encoder.encoder,
 				       tve->dev->of_node);
 	if (ret)
 		return ret;
 
-	drm_encoder_helper_add(&tve->encoder, &imx_tve_encoder_helper_funcs);
-	drm_encoder_init(drm, &tve->encoder, &imx_tve_encoder_funcs,
+	drm_encoder_helper_add(&tve->imx_encoder.encoder,
+			       &imx_tve_encoder_helper_funcs);
+	drm_encoder_init(drm, &tve->imx_encoder.encoder, &imx_tve_encoder_funcs,
 			 encoder_type, NULL);
 
 	drm_connector_helper_add(&tve->connector,
@@ -513,7 +496,8 @@ static int imx_tve_register(struct drm_device *drm, struct imx_tve *tve)
 	drm_connector_init(drm, &tve->connector, &imx_tve_connector_funcs,
 			   DRM_MODE_CONNECTOR_VGA);
 
-	drm_mode_connector_attach_encoder(&tve->connector, &tve->encoder);
+	drm_mode_connector_attach_encoder(&tve->connector,
+					  &tve->imx_encoder.encoder);
 
 	return 0;
 }
@@ -591,7 +575,7 @@ static int imx_tve_bind(struct device *dev, struct device *master, void *data)
 
 	if (tve->mode == TVE_MODE_VGA) {
 		ret = of_property_read_u32(np, "fsl,hsync-pin",
-					   &tve->hsync_pin);
+					   &tve->imx_encoder.di_hsync_pin);
 
 		if (ret < 0) {
 			dev_err(dev, "failed to get vsync pin\n");
@@ -599,12 +583,14 @@ static int imx_tve_bind(struct device *dev, struct device *master, void *data)
 		}
 
 		ret |= of_property_read_u32(np, "fsl,vsync-pin",
-					    &tve->vsync_pin);
+					    &tve->imx_encoder.di_vsync_pin);
 
 		if (ret < 0) {
 			dev_err(dev, "failed to get vsync pin\n");
 			return ret;
 		}
+
+		tve->imx_encoder.bus_format = MEDIA_BUS_FMT_GBR888_1X24;
 	}
 
 	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
@@ -693,7 +679,7 @@ static void imx_tve_unbind(struct device *dev, struct device *master,
 	struct imx_tve *tve = dev_get_drvdata(dev);
 
 	tve->connector.funcs->destroy(&tve->connector);
-	tve->encoder.funcs->destroy(&tve->encoder);
+	tve->imx_encoder.encoder.funcs->destroy(&tve->imx_encoder.encoder);
 
 	if (!IS_ERR(tve->dac_reg))
 		regulator_disable(tve->dac_reg);
diff --git a/drivers/gpu/drm/imx/ipuv3-crtc.c b/drivers/gpu/drm/imx/ipuv3-crtc.c
index 7df51e8..7f4475a1 100644
--- a/drivers/gpu/drm/imx/ipuv3-crtc.c
+++ b/drivers/gpu/drm/imx/ipuv3-crtc.c
@@ -62,15 +62,10 @@ struct ipu_crtc {
 
 	struct ipu_dc		*dc;
 	struct ipu_di		*di;
-	int			enabled;
 	enum ipu_flip_status	flip_state;
 	struct workqueue_struct *flip_queue;
 	struct ipu_flip_work	*flip_work;
 	int			irq;
-	u32			bus_format;
-	u32			bus_flags;
-	int			di_hsync_pin;
-	int			di_vsync_pin;
 };
 
 #define to_ipu_crtc(x) container_of(x, struct ipu_crtc, base)
@@ -79,18 +74,9 @@ static void ipu_crtc_enable(struct ipu_crtc *ipu_crtc)
 {
 	struct ipu_soc *ipu = dev_get_drvdata(ipu_crtc->dev->parent);
 
-	if (ipu_crtc->enabled)
-		return;
-
 	ipu_dc_enable(ipu);
 	ipu_dc_enable_channel(ipu_crtc->dc);
 	ipu_di_enable(ipu_crtc->di);
-	ipu_crtc->enabled = 1;
-
-	/*
-	 * In order not to be warned on enabling vblank failure,
-	 * we should call drm_crtc_vblank_on() after ->enabled is set to 1.
-	 */
 	drm_crtc_vblank_on(&ipu_crtc->base);
 }
 
@@ -98,14 +84,9 @@ static void ipu_crtc_disable(struct ipu_crtc *ipu_crtc)
 {
 	struct ipu_soc *ipu = dev_get_drvdata(ipu_crtc->dev->parent);
 
-	if (!ipu_crtc->enabled)
-		return;
-
 	ipu_dc_disable_channel(ipu_crtc->dc);
 	ipu_di_disable(ipu_crtc->di);
 	ipu_dc_disable(ipu);
-	ipu_crtc->enabled = 0;
-
 	drm_crtc_vblank_off(&ipu_crtc->base);
 }
 
@@ -234,7 +215,7 @@ put_vblank:
 }
 
 static const struct drm_crtc_funcs ipu_crtc_funcs = {
-	.set_config = drm_crtc_helper_set_config,
+	.set_config = drm_atomic_helper_set_config,
 	.destroy = drm_crtc_cleanup,
 	.page_flip = ipu_page_flip,
 	.reset = drm_atomic_helper_crtc_reset,
@@ -314,6 +295,11 @@ static void ipu_crtc_commit(struct drm_crtc *crtc)
 static int ipu_crtc_atomic_check(struct drm_crtc *crtc,
 				 struct drm_crtc_state *state)
 {
+	u32 primary_plane_mask = 1 << drm_plane_index(crtc->primary);
+
+	if (state->active && (primary_plane_mask & state->plane_mask) == 0)
+		return -EINVAL;
+
 	return 0;
 }
 
@@ -321,6 +307,7 @@ static void ipu_crtc_mode_set_nofb(struct drm_crtc *crtc)
 {
 	struct drm_device *dev = crtc->dev;
 	struct drm_encoder *encoder;
+	struct imx_drm_encoder *imx_encoder = NULL;
 	struct ipu_crtc *ipu_crtc = to_ipu_crtc(crtc);
 	struct drm_display_mode *mode = &crtc->state->adjusted_mode;
 	struct ipu_di_signal_cfg sig_cfg = {};
@@ -331,9 +318,12 @@ static void ipu_crtc_mode_set_nofb(struct drm_crtc *crtc)
 	dev_dbg(ipu_crtc->dev, "%s: mode->vdisplay: %d\n", __func__,
 			mode->vdisplay);
 
-	list_for_each_entry(encoder, &dev->mode_config.encoder_list, head)
-		if (encoder->crtc == crtc)
+	list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
+		if (encoder->crtc == crtc) {
 			encoder_types |= BIT(encoder->encoder_type);
+			imx_encoder = enc_to_imx_enc(encoder);
+		}
+	}
 
 	dev_dbg(ipu_crtc->dev, "%s: attached to encoder types 0x%lx\n",
 		__func__, encoder_types);
@@ -351,27 +341,26 @@ static void ipu_crtc_mode_set_nofb(struct drm_crtc *crtc)
 	else
 		sig_cfg.clkflags = 0;
 
-	sig_cfg.enable_pol = !(ipu_crtc->bus_flags & DRM_BUS_FLAG_DE_LOW);
+	sig_cfg.enable_pol = !(imx_encoder->bus_flags & DRM_BUS_FLAG_DE_LOW);
 	/* Default to driving pixel data on negative clock edges */
-	sig_cfg.clk_pol = !!(ipu_crtc->bus_flags &
+	sig_cfg.clk_pol = !!(imx_encoder->bus_flags &
 			     DRM_BUS_FLAG_PIXDATA_POSEDGE);
-	sig_cfg.bus_format = ipu_crtc->bus_format;
+	sig_cfg.bus_format = imx_encoder->bus_format;
 	sig_cfg.v_to_h_sync = 0;
-	sig_cfg.hsync_pin = ipu_crtc->di_hsync_pin;
-	sig_cfg.vsync_pin = ipu_crtc->di_vsync_pin;
+	sig_cfg.hsync_pin = imx_encoder->di_hsync_pin;
+	sig_cfg.vsync_pin = imx_encoder->di_vsync_pin;
 
 	drm_display_mode_to_videomode(mode, &sig_cfg.mode);
 
 	ipu_dc_init_sync(ipu_crtc->dc, ipu_crtc->di,
 			 mode->flags & DRM_MODE_FLAG_INTERLACE,
-			 ipu_crtc->bus_format, mode->hdisplay);
+			 imx_encoder->bus_format, mode->hdisplay);
 	ipu_di_init_sync_panel(ipu_crtc->di, &sig_cfg);
 }
 
 static const struct drm_crtc_helper_funcs ipu_helper_funcs = {
 	.dpms = ipu_crtc_dpms,
 	.mode_fixup = ipu_crtc_mode_fixup,
-	.mode_set = drm_helper_crtc_mode_set,
 	.mode_set_nofb = ipu_crtc_mode_set_nofb,
 	.prepare = ipu_crtc_prepare,
 	.commit = ipu_crtc_commit,
@@ -382,14 +371,6 @@ static int ipu_enable_vblank(struct drm_crtc *crtc)
 {
 	struct ipu_crtc *ipu_crtc = to_ipu_crtc(crtc);
 
-	/*
-	 * ->commit is done after ->mode_set in drm_crtc_helper_set_mode(),
-	 * so waiting for vblank in drm_plane_helper_commit() will timeout.
-	 * Check the state here to avoid the waiting.
-	 */
-	if (!ipu_crtc->enabled)
-		return -EINVAL;
-
 	enable_irq(ipu_crtc->irq);
 
 	return 0;
@@ -402,23 +383,9 @@ static void ipu_disable_vblank(struct drm_crtc *crtc)
 	disable_irq_nosync(ipu_crtc->irq);
 }
 
-static int ipu_set_interface_pix_fmt(struct drm_crtc *crtc,
-		u32 bus_format, int hsync_pin, int vsync_pin, u32 bus_flags)
-{
-	struct ipu_crtc *ipu_crtc = to_ipu_crtc(crtc);
-
-	ipu_crtc->bus_format = bus_format;
-	ipu_crtc->bus_flags = bus_flags;
-	ipu_crtc->di_hsync_pin = hsync_pin;
-	ipu_crtc->di_vsync_pin = vsync_pin;
-
-	return 0;
-}
-
 static const struct imx_drm_crtc_helper_funcs ipu_crtc_helper_funcs = {
 	.enable_vblank = ipu_enable_vblank,
 	.disable_vblank = ipu_disable_vblank,
-	.set_interface_pix_fmt = ipu_set_interface_pix_fmt,
 	.crtc_funcs = &ipu_crtc_funcs,
 	.crtc_helper_funcs = &ipu_helper_funcs,
 };
diff --git a/drivers/gpu/drm/imx/ipuv3-plane.c b/drivers/gpu/drm/imx/ipuv3-plane.c
index fc1ff7c..79cfff5 100644
--- a/drivers/gpu/drm/imx/ipuv3-plane.c
+++ b/drivers/gpu/drm/imx/ipuv3-plane.c
@@ -14,6 +14,7 @@
  */
 
 #include <drm/drmP.h>
+#include <drm/drm_atomic.h>
 #include <drm/drm_atomic_helper.h>
 #include <drm/drm_fb_cma_helper.h>
 #include <drm/drm_gem_cma_helper.h>
@@ -374,31 +375,31 @@ static int ipu_plane_atomic_check(struct drm_plane *plane,
 	struct drm_plane_state *old_state = plane->state;
 	struct drm_crtc_state *crtc_state;
 	struct device *dev = plane->dev->dev;
-	struct drm_crtc *crtc;
 	struct drm_framebuffer *fb = state->fb;
 	struct drm_framebuffer *old_fb = old_state->fb;
 	unsigned long eba, ubo, vbo, old_ubo, old_vbo;
 
 	/* Ok to disable */
 	if (!fb)
-		return old_fb ? 0 : -EINVAL;
+		return 0;
+
+	if (!state->crtc)
+		return -EINVAL;
+
+	crtc_state =
+		drm_atomic_get_existing_crtc_state(state->state, state->crtc);
+	if (WARN_ON(!crtc_state))
+		return -EINVAL;
 
 	/* CRTC should be enabled */
-	drm_for_each_crtc(crtc, plane->dev) {
-		if (drm_crtc_mask(crtc) == plane->possible_crtcs) {
-			if (!crtc->enabled)
-				return -EINVAL;
-			break;
-		}
-	}
+	if (!crtc_state->enable)
+		return -EINVAL;
 
 	/* no scaling */
 	if (state->src_w >> 16 != state->crtc_w ||
 	    state->src_h >> 16 != state->crtc_h)
 		return -EINVAL;
 
-	crtc_state = state->crtc->state;
-
 	switch (plane->type) {
 	case DRM_PLANE_TYPE_PRIMARY:
 		/* full plane doesn't support partial off screen */
diff --git a/drivers/gpu/drm/imx/parallel-display.c b/drivers/gpu/drm/imx/parallel-display.c
index 9fe88c9..7374d82 100644
--- a/drivers/gpu/drm/imx/parallel-display.c
+++ b/drivers/gpu/drm/imx/parallel-display.c
@@ -27,15 +27,15 @@
 #include "imx-drm.h"
 
 #define con_to_imxpd(x) container_of(x, struct imx_parallel_display, connector)
-#define enc_to_imxpd(x) container_of(x, struct imx_parallel_display, encoder)
+#define imx_enc_to_imxpd(x)	\
+		container_of(x, struct imx_parallel_display, imx_encoder)
 
 struct imx_parallel_display {
 	struct drm_connector connector;
-	struct drm_encoder encoder;
+	struct imx_drm_encoder imx_encoder;
 	struct device *dev;
 	void *edid;
 	int edid_len;
-	u32 bus_format;
 	struct drm_display_mode mode;
 	struct drm_panel *panel;
 };
@@ -57,8 +57,9 @@ static int imx_pd_connector_get_modes(struct drm_connector *connector)
 		struct drm_display_info *di = &connector->display_info;
 
 		num_modes = imxpd->panel->funcs->get_modes(imxpd->panel);
-		if (!imxpd->bus_format && di->num_bus_formats)
-			imxpd->bus_format = di->bus_formats[0];
+		if (!imxpd->imx_encoder.bus_format && di->num_bus_formats)
+			imxpd->imx_encoder.bus_format = di->bus_formats[0];
+		imxpd->imx_encoder.bus_flags = di->bus_flags;
 		if (num_modes > 0)
 			return num_modes;
 	}
@@ -88,12 +89,13 @@ static struct drm_encoder *imx_pd_connector_best_encoder(
 {
 	struct imx_parallel_display *imxpd = con_to_imxpd(connector);
 
-	return &imxpd->encoder;
+	return &imxpd->imx_encoder.encoder;
 }
 
 static void imx_pd_encoder_dpms(struct drm_encoder *encoder, int mode)
 {
-	struct imx_parallel_display *imxpd = enc_to_imxpd(encoder);
+	struct imx_drm_encoder *imx_encoder = enc_to_imx_enc(encoder);
+	struct imx_parallel_display *imxpd = imx_enc_to_imxpd(imx_encoder);
 
 	if (mode != DRM_MODE_DPMS_ON)
 		drm_panel_disable(imxpd->panel);
@@ -101,16 +103,10 @@ static void imx_pd_encoder_dpms(struct drm_encoder *encoder, int mode)
 		drm_panel_enable(imxpd->panel);
 }
 
-static void imx_pd_encoder_prepare(struct drm_encoder *encoder)
-{
-	struct imx_parallel_display *imxpd = enc_to_imxpd(encoder);
-	imx_drm_set_bus_config(encoder, imxpd->bus_format, 2, 3,
-			       imxpd->connector.display_info.bus_flags);
-}
-
 static void imx_pd_encoder_commit(struct drm_encoder *encoder)
 {
-	struct imx_parallel_display *imxpd = enc_to_imxpd(encoder);
+	struct imx_drm_encoder *imx_encoder = enc_to_imx_enc(encoder);
+	struct imx_parallel_display *imxpd = imx_enc_to_imxpd(imx_encoder);
 
 	drm_panel_prepare(imxpd->panel);
 	drm_panel_enable(imxpd->panel);
@@ -124,7 +120,8 @@ static void imx_pd_encoder_mode_set(struct drm_encoder *encoder,
 
 static void imx_pd_encoder_disable(struct drm_encoder *encoder)
 {
-	struct imx_parallel_display *imxpd = enc_to_imxpd(encoder);
+	struct imx_drm_encoder *imx_encoder = enc_to_imx_enc(encoder);
+	struct imx_parallel_display *imxpd = imx_enc_to_imxpd(imx_encoder);
 
 	drm_panel_disable(imxpd->panel);
 	drm_panel_unprepare(imxpd->panel);
@@ -151,7 +148,6 @@ static const struct drm_encoder_funcs imx_pd_encoder_funcs = {
 
 static const struct drm_encoder_helper_funcs imx_pd_encoder_helper_funcs = {
 	.dpms = imx_pd_encoder_dpms,
-	.prepare = imx_pd_encoder_prepare,
 	.commit = imx_pd_encoder_commit,
 	.mode_set = imx_pd_encoder_mode_set,
 	.disable = imx_pd_encoder_disable,
@@ -162,7 +158,7 @@ static int imx_pd_register(struct drm_device *drm,
 {
 	int ret;
 
-	ret = imx_drm_encoder_parse_of(drm, &imxpd->encoder,
+	ret = imx_drm_encoder_parse_of(drm, &imxpd->imx_encoder.encoder,
 				       imxpd->dev->of_node);
 	if (ret)
 		return ret;
@@ -174,9 +170,10 @@ static int imx_pd_register(struct drm_device *drm,
 	 */
 	imxpd->connector.dpms = DRM_MODE_DPMS_OFF;
 
-	drm_encoder_helper_add(&imxpd->encoder, &imx_pd_encoder_helper_funcs);
-	drm_encoder_init(drm, &imxpd->encoder, &imx_pd_encoder_funcs,
-			 DRM_MODE_ENCODER_NONE, NULL);
+	drm_encoder_helper_add(&imxpd->imx_encoder.encoder,
+			       &imx_pd_encoder_helper_funcs);
+	drm_encoder_init(drm, &imxpd->imx_encoder.encoder,
+			 &imx_pd_encoder_funcs, DRM_MODE_ENCODER_NONE, NULL);
 
 	drm_connector_helper_add(&imxpd->connector,
 			&imx_pd_connector_helper_funcs);
@@ -186,7 +183,8 @@ static int imx_pd_register(struct drm_device *drm,
 	if (imxpd->panel)
 		drm_panel_attach(imxpd->panel, &imxpd->connector);
 
-	drm_mode_connector_attach_encoder(&imxpd->connector, &imxpd->encoder);
+	drm_mode_connector_attach_encoder(&imxpd->connector,
+					  &imxpd->imx_encoder.encoder);
 
 	return 0;
 }
@@ -199,6 +197,7 @@ static int imx_pd_bind(struct device *dev, struct device *master, void *data)
 	const u8 *edidp;
 	struct imx_parallel_display *imxpd;
 	int ret;
+	u32 bus_format = 0;
 	const char *fmt;
 
 	imxpd = devm_kzalloc(dev, sizeof(*imxpd), GFP_KERNEL);
@@ -212,14 +211,17 @@ static int imx_pd_bind(struct device *dev, struct device *master, void *data)
 	ret = of_property_read_string(np, "interface-pix-fmt", &fmt);
 	if (!ret) {
 		if (!strcmp(fmt, "rgb24"))
-			imxpd->bus_format = MEDIA_BUS_FMT_RGB888_1X24;
+			bus_format = MEDIA_BUS_FMT_RGB888_1X24;
 		else if (!strcmp(fmt, "rgb565"))
-			imxpd->bus_format = MEDIA_BUS_FMT_RGB565_1X16;
+			bus_format = MEDIA_BUS_FMT_RGB565_1X16;
 		else if (!strcmp(fmt, "bgr666"))
-			imxpd->bus_format = MEDIA_BUS_FMT_RGB666_1X18;
+			bus_format = MEDIA_BUS_FMT_RGB666_1X18;
 		else if (!strcmp(fmt, "lvds666"))
-			imxpd->bus_format = MEDIA_BUS_FMT_RGB666_1X24_CPADHI;
+			bus_format = MEDIA_BUS_FMT_RGB666_1X24_CPADHI;
 	}
+	imxpd->imx_encoder.bus_format = bus_format;
+	imxpd->imx_encoder.di_hsync_pin = 2;
+	imxpd->imx_encoder.di_vsync_pin = 3;
 
 	/* port@1 is the output port */
 	ep = of_graph_get_endpoint_by_regs(np, 1, -1);
@@ -252,7 +254,7 @@ static void imx_pd_unbind(struct device *dev, struct device *master,
 {
 	struct imx_parallel_display *imxpd = dev_get_drvdata(dev);
 
-	imxpd->encoder.funcs->destroy(&imxpd->encoder);
+	imxpd->imx_encoder.encoder.funcs->destroy(&imxpd->imx_encoder.encoder);
 	imxpd->connector.funcs->destroy(&imxpd->connector);
 
 	kfree(imxpd->edid);
-- 
2.7.4

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