Merge branch 'exynos-drm-next' of...

Merge branch 'exynos-drm-next' of git://git.kernel.org/pub/scm/linux/kernel/git/daeinki/drm-exynos into drm-next

 Summary:
   - expose HDMI-PHY clock to other drivers.
     . this patch was included in below patch series but I missed.
             http://www.spinics.net/lists/dri-devel/msg103097.html
   - some fixups about DECON5433 driver
     . this patch corrects vblank handling and fixes up trigger
       configuration.
   - use generic functions - gem_prime_mmap and dma_buf_mmap.
   - use DMA-Mapping API instead of specific one.
   - some code cleanups and fixeups.

* 'exynos-drm-next' of git://git.kernel.org/pub/scm/linux/kernel/git/daeinki/drm-exynos:
  drm/exynos/decon5433: fix trigger configuration
  drm/exynos/dsi: use of_graph_get_endpoint_by_regs helper
  drm/exynos/dpi: use of_graph_get_endpoint_by_regs helper
  drm/exynos: Nuke dummy fb->dirty callback
  drm/exynos: use directly DMA mapping APIs on g2d
  drm/exynos/hdmi: Don't print error on deferral due to regulators
  drm/exynos: fix imported dma-buf to be mapped
  drm/exynos: support gem_prime_mmap
  drm/exynos: fimd: harden fimd_calc_clkdiv()
  drm/exynos: fix cancel page flip code
  drm/exynos/decon5433: do not use unnecessary software trigger
  drm/exynos/decon5433: handle vblank in vblank interrupt
  drm/exynos/hdmi: expose HDMI-PHY clock as pipeline clock

drivers/gpu/drm/exynos/exynos5433_drm_decon.c

@@ -147,11 +147,13 @@ static void decon_commit(struct exynos_drm_crtc *crtc)
 	val = CMU_CLKGAGE_MODE_SFR_F | CMU_CLKGAGE_MODE_MEM_F;
 	writel(val, ctx->addr + DECON_CMU);
 
+	if (ctx->out_type & (IFTYPE_I80 | I80_HW_TRG))
+		decon_setup_trigger(ctx);
+
 	/* lcd on and use command if */
 	val = VIDOUT_LCD_ON;
 	if (ctx->out_type & IFTYPE_I80) {
 		val |= VIDOUT_COMMAND_IF;
-		decon_setup_trigger(ctx);
 	} else {
 		val |= VIDOUT_RGB_IF;
 	}
@@ -376,9 +378,6 @@ static void decon_swreset(struct decon_context *ctx)
 	writel(VIDCON1_VCLK_RUN_VDEN_DISABLE, ctx->addr + DECON_VIDCON1);
 	writel(CRCCTRL_CRCEN | CRCCTRL_CRCSTART_F | CRCCTRL_CRCCLKEN,
 	       ctx->addr + DECON_CRCCTRL);
-
-	if (ctx->out_type & IFTYPE_I80)
-		decon_setup_trigger(ctx);
 }
 
 static void decon_enable(struct exynos_drm_crtc *crtc)
@@ -434,13 +433,12 @@ static void decon_te_irq_handler(struct exynos_drm_crtc *crtc)
 {
 	struct decon_context *ctx = crtc->ctx;
 
-	if (!test_bit(BIT_CLKS_ENABLED, &ctx->flags))
+	if (!test_bit(BIT_CLKS_ENABLED, &ctx->flags) ||
+	    (ctx->out_type & I80_HW_TRG))
 		return;
 
 	if (test_and_clear_bit(BIT_WIN_UPDATED, &ctx->flags))
 		decon_set_bits(ctx, DECON_TRIGCON, TRIGCON_SWTRIGCMD, ~0);
-
-	drm_crtc_handle_vblank(&ctx->crtc->base);
 }
 
 static void decon_clear_channels(struct exynos_drm_crtc *crtc)
@@ -573,6 +571,7 @@ static irqreturn_t decon_irq_handler(int irq, void *dev_id)
 
 		/* clear */
 		writel(val, ctx->addr + DECON_VIDINTCON1);
+		drm_crtc_handle_vblank(&ctx->crtc->base);
 	}
 
 out:
@@ -648,9 +647,8 @@ static int exynos5433_decon_probe(struct platform_device *pdev)
 
 	if (ctx->out_type & IFTYPE_HDMI) {
 		ctx->first_win = 1;
-		ctx->out_type = IFTYPE_I80;
 	} else if (of_get_child_by_name(dev->of_node, "i80-if-timings")) {
-		ctx->out_type = IFTYPE_I80;
+		ctx->out_type |= IFTYPE_I80;
 	}
 
 	for (i = 0; i < ARRAY_SIZE(decon_clks_name); i++) {

drivers/gpu/drm/exynos/exynos_drm_crtc.c

@@ -233,20 +233,15 @@ void exynos_drm_crtc_cancel_page_flip(struct drm_crtc *crtc,
 	unsigned long flags;
 
 	spin_lock_irqsave(&crtc->dev->event_lock, flags);
+
 	e = exynos_crtc->event;
 	if (e && e->base.file_priv == file) {
 		exynos_crtc->event = NULL;
-		/*
-		 * event will be destroyed by core part
-		 * so below line should be removed later with core changes
-		 */
-		e->base.destroy(&e->base);
-		/*
-		 * event_space will be increased by core part
-		 * so below line should be removed later with core changes.
-		 */
-		file->event_space += sizeof(e->event);
 		atomic_dec(&exynos_crtc->pending_update);
 	}
+
 	spin_unlock_irqrestore(&crtc->dev->event_lock, flags);
+
+	if (e && e->base.file_priv == file)
+		drm_event_cancel_free(crtc->dev, &e->base);
 }

drivers/gpu/drm/exynos/exynos_drm_dpi.c

@@ -15,6 +15,7 @@
 #include <drm/drm_panel.h>
 #include <drm/drm_atomic_helper.h>
 
+#include <linux/of_graph.h>
 #include <linux/regulator/consumer.h>
 
 #include <video/of_videomode.h>
@@ -164,67 +165,6 @@ static const struct drm_encoder_funcs exynos_dpi_encoder_funcs = {
 	.destroy = drm_encoder_cleanup,
 };
 
-/* of_* functions will be removed after merge of of_graph patches */
-static struct device_node *
-of_get_child_by_name_reg(struct device_node *parent, const char *name, u32 reg)
-{
-	struct device_node *np;
-
-	for_each_child_of_node(parent, np) {
-		u32 r;
-
-		if (!np->name || of_node_cmp(np->name, name))
-			continue;
-
-		if (of_property_read_u32(np, "reg", &r) < 0)
-			r = 0;
-
-		if (reg == r)
-			break;
-	}
-
-	return np;
-}
-
-static struct device_node *of_graph_get_port_by_reg(struct device_node *parent,
-						    u32 reg)
-{
-	struct device_node *ports, *port;
-
-	ports = of_get_child_by_name(parent, "ports");
-	if (ports)
-		parent = ports;
-
-	port = of_get_child_by_name_reg(parent, "port", reg);
-
-	of_node_put(ports);
-
-	return port;
-}
-
-static struct device_node *
-of_graph_get_endpoint_by_reg(struct device_node *port, u32 reg)
-{
-	return of_get_child_by_name_reg(port, "endpoint", reg);
-}
-
-static struct device_node *
-of_graph_get_remote_port_parent(const struct device_node *node)
-{
-	struct device_node *np;
-	unsigned int depth;
-
-	np = of_parse_phandle(node, "remote-endpoint", 0);
-
-	/* Walk 3 levels up only if there is 'ports' node. */
-	for (depth = 3; depth && np; depth--) {
-		np = of_get_next_parent(np);
-		if (depth == 2 && of_node_cmp(np->name, "ports"))
-			break;
-	}
-	return np;
-}
-
 enum {
 	FIMD_PORT_IN0,
 	FIMD_PORT_IN1,
@@ -237,12 +177,7 @@ static struct device_node *exynos_dpi_of_find_panel_node(struct device *dev)
 {
 	struct device_node *np, *ep;
 
-	np = of_graph_get_port_by_reg(dev->of_node, FIMD_PORT_RGB);
-	if (!np)
-		return NULL;
-
-	ep = of_graph_get_endpoint_by_reg(np, 0);
-	of_node_put(np);
+	ep = of_graph_get_endpoint_by_regs(dev->of_node, FIMD_PORT_RGB, 0);
 	if (!ep)
 		return NULL;
 

drivers/gpu/drm/exynos/exynos_drm_drv.c

@@ -431,6 +431,7 @@ static struct drm_driver exynos_drm_driver = {
 	.gem_prime_import_sg_table	= exynos_drm_gem_prime_import_sg_table,
 	.gem_prime_vmap		= exynos_drm_gem_prime_vmap,
 	.gem_prime_vunmap	= exynos_drm_gem_prime_vunmap,
+	.gem_prime_mmap		= exynos_drm_gem_prime_mmap,
 	.ioctls			= exynos_ioctls,
 	.num_ioctls		= ARRAY_SIZE(exynos_ioctls),
 	.fops			= &exynos_drm_driver_fops,

drivers/gpu/drm/exynos/exynos_drm_dsi.c

@@ -1632,50 +1632,6 @@ static const struct drm_encoder_funcs exynos_dsi_encoder_funcs = {
 
 MODULE_DEVICE_TABLE(of, exynos_dsi_of_match);
 
-/* of_* functions will be removed after merge of of_graph patches */
-static struct device_node *
-of_get_child_by_name_reg(struct device_node *parent, const char *name, u32 reg)
-{
-	struct device_node *np;
-
-	for_each_child_of_node(parent, np) {
-		u32 r;
-
-		if (!np->name || of_node_cmp(np->name, name))
-			continue;
-
-		if (of_property_read_u32(np, "reg", &r) < 0)
-			r = 0;
-
-		if (reg == r)
-			break;
-	}
-
-	return np;
-}
-
-static struct device_node *of_graph_get_port_by_reg(struct device_node *parent,
-						    u32 reg)
-{
-	struct device_node *ports, *port;
-
-	ports = of_get_child_by_name(parent, "ports");
-	if (ports)
-		parent = ports;
-
-	port = of_get_child_by_name_reg(parent, "port", reg);
-
-	of_node_put(ports);
-
-	return port;
-}
-
-static struct device_node *
-of_graph_get_endpoint_by_reg(struct device_node *port, u32 reg)
-{
-	return of_get_child_by_name_reg(port, "endpoint", reg);
-}
-
 static int exynos_dsi_of_read_u32(const struct device_node *np,
 				  const char *propname, u32 *out_value)
 {
@@ -1697,7 +1653,7 @@ static int exynos_dsi_parse_dt(struct exynos_dsi *dsi)
 {
 	struct device *dev = dsi->dev;
 	struct device_node *node = dev->of_node;
-	struct device_node *port, *ep;
+	struct device_node *ep;
 	int ret;
 
 	ret = exynos_dsi_of_read_u32(node, "samsung,pll-clock-frequency",
@@ -1705,16 +1661,9 @@ static int exynos_dsi_parse_dt(struct exynos_dsi *dsi)
 	if (ret < 0)
 		return ret;
 
-	port = of_graph_get_port_by_reg(node, DSI_PORT_OUT);
-	if (!port) {
-		dev_err(dev, "no output port specified\n");
-		return -EINVAL;
-	}
-
-	ep = of_graph_get_endpoint_by_reg(port, 0);
-	of_node_put(port);
+	ep = of_graph_get_endpoint_by_regs(node, DSI_PORT_OUT, 0);
 	if (!ep) {
-		dev_err(dev, "no endpoint specified in output port\n");
+		dev_err(dev, "no output port with endpoint specified\n");
 		return -EINVAL;
 	}
 

drivers/gpu/drm/exynos/exynos_drm_fb.c

@@ -97,20 +97,9 @@ static int exynos_drm_fb_create_handle(struct drm_framebuffer *fb,
 				     &exynos_fb->exynos_gem[0]->base, handle);
 }
 
-static int exynos_drm_fb_dirty(struct drm_framebuffer *fb,
-				struct drm_file *file_priv, unsigned flags,
-				unsigned color, struct drm_clip_rect *clips,
-				unsigned num_clips)
-{
-	/* TODO */
-
-	return 0;
-}
-
 static const struct drm_framebuffer_funcs exynos_drm_fb_funcs = {
 	.destroy	= exynos_drm_fb_destroy,
 	.create_handle	= exynos_drm_fb_create_handle,
-	.dirty		= exynos_drm_fb_dirty,
 };
 
 struct drm_framebuffer *

drivers/gpu/drm/exynos/exynos_drm_fimd.c

@@ -397,9 +397,16 @@ static void fimd_clear_channels(struct exynos_drm_crtc *crtc)
 static u32 fimd_calc_clkdiv(struct fimd_context *ctx,
 		const struct drm_display_mode *mode)
 {
-	unsigned long ideal_clk = mode->htotal * mode->vtotal * mode->vrefresh;
+	unsigned long ideal_clk;
 	u32 clkdiv;
 
+	if (mode->clock == 0) {
+		DRM_ERROR("Mode has zero clock value.\n");
+		return 0xff;
+	}
+
+	ideal_clk = mode->clock * 1000;
+
 	if (ctx->i80_if) {
 		/*
 		 * The frame done interrupt should be occurred prior to the

drivers/gpu/drm/exynos/exynos_drm_g2d.c

@@ -383,8 +383,8 @@ static void g2d_userptr_put_dma_addr(struct drm_device *drm_dev,
 		return;
 
 out:
-	exynos_gem_unmap_sgt_from_dma(drm_dev, g2d_userptr->sgt,
-					DMA_BIDIRECTIONAL);
+	dma_unmap_sg(to_dma_dev(drm_dev), g2d_userptr->sgt->sgl,
+			g2d_userptr->sgt->nents, DMA_BIDIRECTIONAL);
 
 	pages = frame_vector_pages(g2d_userptr->vec);
 	if (!IS_ERR(pages)) {
@@ -501,10 +501,10 @@ static dma_addr_t *g2d_userptr_get_dma_addr(struct drm_device *drm_dev,
 
 	g2d_userptr->sgt = sgt;
 
-	ret = exynos_gem_map_sgt_with_dma(drm_dev, g2d_userptr->sgt,
-						DMA_BIDIRECTIONAL);
-	if (ret < 0) {
+	if (!dma_map_sg(to_dma_dev(drm_dev), sgt->sgl, sgt->nents,
+				DMA_BIDIRECTIONAL)) {
 		DRM_ERROR("failed to map sgt with dma region.\n");
+		ret = -ENOMEM;
 		goto err_sg_free_table;
 	}
 

drivers/gpu/drm/exynos/exynos_drm_gem.c

@@ -378,28 +378,6 @@ int exynos_drm_gem_get_ioctl(struct drm_device *dev, void *data,
 	return 0;
 }
 
-int exynos_gem_map_sgt_with_dma(struct drm_device *drm_dev,
-				struct sg_table *sgt,
-				enum dma_data_direction dir)
-{
-	int nents;
-
-	nents = dma_map_sg(to_dma_dev(drm_dev), sgt->sgl, sgt->nents, dir);
-	if (!nents) {
-		DRM_ERROR("failed to map sgl with dma.\n");
-		return nents;
-	}
-
-	return 0;
-}
-
-void exynos_gem_unmap_sgt_from_dma(struct drm_device *drm_dev,
-				struct sg_table *sgt,
-				enum dma_data_direction dir)
-{
-	dma_unmap_sg(to_dma_dev(drm_dev), sgt->sgl, sgt->nents, dir);
-}
-
 void exynos_drm_gem_free_object(struct drm_gem_object *obj)
 {
 	exynos_drm_gem_destroy(to_exynos_gem(obj));
@@ -503,22 +481,12 @@ int exynos_drm_gem_fault(struct vm_area_struct *vma, struct vm_fault *vmf)
 	}
 }
 
-int exynos_drm_gem_mmap(struct file *filp, struct vm_area_struct *vma)
+static int exynos_drm_gem_mmap_obj(struct drm_gem_object *obj,
+				   struct vm_area_struct *vma)
 {
-	struct exynos_drm_gem *exynos_gem;
-	struct drm_gem_object *obj;
+	struct exynos_drm_gem *exynos_gem = to_exynos_gem(obj);
 	int ret;
 
-	/* set vm_area_struct. */
-	ret = drm_gem_mmap(filp, vma);
-	if (ret < 0) {
-		DRM_ERROR("failed to mmap.\n");
-		return ret;
-	}
-
-	obj = vma->vm_private_data;
-	exynos_gem = to_exynos_gem(obj);
-
 	DRM_DEBUG_KMS("flags = 0x%x\n", exynos_gem->flags);
 
 	/* non-cachable as default. */
@@ -543,6 +511,26 @@ int exynos_drm_gem_mmap(struct file *filp, struct vm_area_struct *vma)
 	return ret;
 }
 
+int exynos_drm_gem_mmap(struct file *filp, struct vm_area_struct *vma)
+{
+	struct drm_gem_object *obj;
+	int ret;
+
+	/* set vm_area_struct. */
+	ret = drm_gem_mmap(filp, vma);
+	if (ret < 0) {
+		DRM_ERROR("failed to mmap.\n");
+		return ret;
+	}
+
+	obj = vma->vm_private_data;
+
+	if (obj->import_attach)
+		return dma_buf_mmap(obj->dma_buf, vma, 0);
+
+	return exynos_drm_gem_mmap_obj(obj, vma);
+}
+
 /* low-level interface prime helpers */
 struct sg_table *exynos_drm_gem_prime_get_sg_table(struct drm_gem_object *obj)
 {
@@ -617,3 +605,15 @@ void exynos_drm_gem_prime_vunmap(struct drm_gem_object *obj, void *vaddr)
 {
 	/* Nothing to do */
 }
+
+int exynos_drm_gem_prime_mmap(struct drm_gem_object *obj,
+			      struct vm_area_struct *vma)
+{
+	int ret;
+
+	ret = drm_gem_mmap_obj(obj, obj->size, vma);
+	if (ret < 0)
+		return ret;
+
+	return exynos_drm_gem_mmap_obj(obj, vma);
+}

drivers/gpu/drm/exynos/exynos_drm_gem.h

@@ -121,16 +121,6 @@ int exynos_drm_gem_fault(struct vm_area_struct *vma, struct vm_fault *vmf);
 /* set vm_flags and we can change the vm attribute to other one at here. */
 int exynos_drm_gem_mmap(struct file *filp, struct vm_area_struct *vma);
 
-/* map sgt with dma region. */
-int exynos_gem_map_sgt_with_dma(struct drm_device *drm_dev,
-				struct sg_table *sgt,
-				enum dma_data_direction dir);
-
-/* unmap sgt from dma region. */
-void exynos_gem_unmap_sgt_from_dma(struct drm_device *drm_dev,
-				struct sg_table *sgt,
-				enum dma_data_direction dir);
-
 /* low-level interface prime helpers */
 struct sg_table *exynos_drm_gem_prime_get_sg_table(struct drm_gem_object *obj);
 struct drm_gem_object *
@@ -139,5 +129,7 @@ exynos_drm_gem_prime_import_sg_table(struct drm_device *dev,
 				     struct sg_table *sgt);
 void *exynos_drm_gem_prime_vmap(struct drm_gem_object *obj);
 void exynos_drm_gem_prime_vunmap(struct drm_gem_object *obj, void *vaddr);
+int exynos_drm_gem_prime_mmap(struct drm_gem_object *obj,
+			      struct vm_area_struct *vma);
 
 #endif

drivers/gpu/drm/exynos/exynos_hdmi.c

@@ -146,6 +146,7 @@ struct hdmi_context {
 	struct clk			**clk_muxes;
 	struct regulator_bulk_data	regul_bulk[ARRAY_SIZE(supply)];
 	struct regulator		*reg_hdmi_en;
+	struct exynos_drm_clk		phy_clk;
 };
 
 static inline struct hdmi_context *encoder_to_hdmi(struct drm_encoder *e)
@@ -1445,7 +1446,6 @@ static void hdmiphy_conf_apply(struct hdmi_context *hdata)
 
 static void hdmi_conf_apply(struct hdmi_context *hdata)
 {
-	hdmiphy_conf_apply(hdata);
 	hdmi_start(hdata, false);
 	hdmi_conf_init(hdata);
 	hdmi_audio_init(hdata);
@@ -1478,10 +1478,8 @@ static void hdmi_set_refclk(struct hdmi_context *hdata, bool on)
 			   SYSREG_HDMI_REFCLK_INT_CLK, on ? ~0 : 0);
 }
 
-static void hdmi_enable(struct drm_encoder *encoder)
+static void hdmiphy_enable(struct hdmi_context *hdata)
 {
-	struct hdmi_context *hdata = encoder_to_hdmi(encoder);
-
 	if (hdata->powered)
 		return;
 
@@ -1497,11 +1495,40 @@ static void hdmi_enable(struct drm_encoder *encoder)
 
 	hdmi_reg_writemask(hdata, HDMI_PHY_CON_0, 0, HDMI_PHY_POWER_OFF_EN);
 
-	hdmi_conf_apply(hdata);
+	hdmiphy_conf_apply(hdata);
 
 	hdata->powered = true;
 }
 
+static void hdmiphy_disable(struct hdmi_context *hdata)
+{
+	if (!hdata->powered)
+		return;
+
+	hdmi_reg_writemask(hdata, HDMI_CON_0, 0, HDMI_EN);
+
+	hdmi_reg_writemask(hdata, HDMI_PHY_CON_0, ~0, HDMI_PHY_POWER_OFF_EN);
+
+	hdmi_set_refclk(hdata, false);
+
+	regmap_update_bits(hdata->pmureg, PMU_HDMI_PHY_CONTROL,
+			PMU_HDMI_PHY_ENABLE_BIT, 0);
+
+	regulator_bulk_disable(ARRAY_SIZE(supply), hdata->regul_bulk);
+
+	pm_runtime_put_sync(hdata->dev);
+
+	hdata->powered = false;
+}
+
+static void hdmi_enable(struct drm_encoder *encoder)
+{
+	struct hdmi_context *hdata = encoder_to_hdmi(encoder);
+
+	hdmiphy_enable(hdata);
+	hdmi_conf_apply(hdata);
+}
+
 static void hdmi_disable(struct drm_encoder *encoder)
 {
 	struct hdmi_context *hdata = encoder_to_hdmi(encoder);
@@ -1525,22 +1552,9 @@ static void hdmi_disable(struct drm_encoder *encoder)
 	if (funcs && funcs->disable)
 		(*funcs->disable)(crtc);
 
-	hdmi_reg_writemask(hdata, HDMI_CON_0, 0, HDMI_EN);
-
 	cancel_delayed_work(&hdata->hotplug_work);
 
-	hdmi_reg_writemask(hdata, HDMI_PHY_CON_0, ~0, HDMI_PHY_POWER_OFF_EN);
-
-	hdmi_set_refclk(hdata, false);
-
-	regmap_update_bits(hdata->pmureg, PMU_HDMI_PHY_CONTROL,
-			PMU_HDMI_PHY_ENABLE_BIT, 0);
-
-	regulator_bulk_disable(ARRAY_SIZE(supply), hdata->regul_bulk);
-
-	pm_runtime_put_sync(hdata->dev);
-
-	hdata->powered = false;
+	hdmiphy_disable(hdata);
 }
 
 static const struct drm_encoder_helper_funcs exynos_hdmi_encoder_helper_funcs = {
@@ -1625,6 +1639,17 @@ static int hdmi_clk_init(struct hdmi_context *hdata)
 }
 
 
+static void hdmiphy_clk_enable(struct exynos_drm_clk *clk, bool enable)
+{
+	struct hdmi_context *hdata = container_of(clk, struct hdmi_context,
+						  phy_clk);
+
+	if (enable)
+		hdmiphy_enable(hdata);
+	else
+		hdmiphy_disable(hdata);
+}
+
 static int hdmi_resources_init(struct hdmi_context *hdata)
 {
 	struct device *dev = hdata->dev;
@@ -1658,7 +1683,8 @@ static int hdmi_resources_init(struct hdmi_context *hdata)
 	}
 	ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(supply), hdata->regul_bulk);
 	if (ret) {
-		DRM_ERROR("failed to get regulators\n");
+		if (ret != -EPROBE_DEFER)
+			DRM_ERROR("failed to get regulators\n");
 		return ret;
 	}
 
@@ -1710,6 +1736,10 @@ static int hdmi_bind(struct device *dev, struct device *master, void *data)
 	if (pipe < 0)
 		return pipe;
 
+	hdata->phy_clk.enable = hdmiphy_clk_enable;
+
+	exynos_drm_crtc_from_pipe(drm_dev, pipe)->pipe_clk = &hdata->phy_clk;
+
 	encoder->possible_crtcs = 1 << pipe;
 
 	DRM_DEBUG_KMS("possible_crtcs = 0x%x\n", encoder->possible_crtcs);
@@ -1777,7 +1807,8 @@ static int hdmi_probe(struct platform_device *pdev)
 
 	ret = hdmi_resources_init(hdata);
 	if (ret) {
-		DRM_ERROR("hdmi_resources_init failed\n");
+		if (ret != -EPROBE_DEFER)
+			DRM_ERROR("hdmi_resources_init failed\n");
 		return ret;
 	}