Merge tag 'mediatek-drm-next-5.13' of https://git.kernel.org/pub/scm/linux/kernel/git/chunkuang.hu/linux into drm-next

Mediatek DRM Next for Linux 5.13

1. Fine tune the line time for EOTp.
2. Add support mt8192 dpi.
3. Make crtc config-updating atomic.
4. Don't support hdmi connector creation.

From: Chun-Kuang Hu <chunkuang.hu@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20210405082248.3578-1-chunkuang.hu@kernel.org
Signed-off-by: Dave Airlie <airlied@redhat.com>

7 files changed, 125 insertions, 118 deletions

diff --git a/drivers/gpu/drm/mediatek/mtk_cec.c b/drivers/gpu/drm/mediatek/mtk_cec.c
index cb29b649fcdb..e9cef5c0c8f7 100644
--- a/drivers/gpu/drm/mediatek/mtk_cec.c
+++ b/drivers/gpu/drm/mediatek/mtk_cec.c
@@ -7,6 +7,7 @@
 #include <linux/delay.h>
 #include <linux/io.h>
 #include <linux/interrupt.h>
+#include <linux/module.h>
 #include <linux/mod_devicetable.h>
 #include <linux/platform_device.h>
 
@@ -208,10 +209,8 @@ static int mtk_cec_probe(struct platform_device *pdev)
 	}
 
 	cec->irq = platform_get_irq(pdev, 0);
-	if (cec->irq < 0) {
-		dev_err(dev, "Failed to get cec irq: %d\n", cec->irq);
+	if (cec->irq < 0)
 		return cec->irq;
-	}
 
 	ret = devm_request_threaded_irq(dev, cec->irq, NULL,
 					mtk_cec_htplg_isr_thread,
@@ -247,6 +246,7 @@ static const struct of_device_id mtk_cec_of_ids[] = {
 	{ .compatible = "mediatek,mt8173-cec", },
 	{}
 };
+MODULE_DEVICE_TABLE(of, mtk_cec_of_ids);
 
 struct platform_driver mtk_cec_driver = {
 	.probe = mtk_cec_probe,
diff --git a/drivers/gpu/drm/mediatek/mtk_dpi.c b/drivers/gpu/drm/mediatek/mtk_dpi.c
index b05f900d9322..bea91c81626e 100644
--- a/drivers/gpu/drm/mediatek/mtk_dpi.c
+++ b/drivers/gpu/drm/mediatek/mtk_dpi.c
@@ -120,6 +120,7 @@ struct mtk_dpi_yc_limit {
 struct mtk_dpi_conf {
 	unsigned int (*cal_factor)(int clock);
 	u32 reg_h_fre_con;
+	u32 max_clock_khz;
 	bool edge_sel_en;
 };
 
@@ -557,9 +558,23 @@ static void mtk_dpi_bridge_enable(struct drm_bridge *bridge)
 	mtk_dpi_set_display_mode(dpi, &dpi->mode);
 }
 
+static enum drm_mode_status
+mtk_dpi_bridge_mode_valid(struct drm_bridge *bridge,
+			  const struct drm_display_info *info,
+			  const struct drm_display_mode *mode)
+{
+	struct mtk_dpi *dpi = bridge_to_dpi(bridge);
+
+	if (mode->clock > dpi->conf->max_clock_khz)
+		return MODE_CLOCK_HIGH;
+
+	return MODE_OK;
+}
+
 static const struct drm_bridge_funcs mtk_dpi_bridge_funcs = {
 	.attach = mtk_dpi_bridge_attach,
 	.mode_set = mtk_dpi_bridge_mode_set,
+	.mode_valid = mtk_dpi_bridge_mode_valid,
 	.disable = mtk_dpi_bridge_disable,
 	.enable = mtk_dpi_bridge_enable,
 };
@@ -668,17 +683,26 @@ static unsigned int mt8183_calculate_factor(int clock)
 static const struct mtk_dpi_conf mt8173_conf = {
 	.cal_factor = mt8173_calculate_factor,
 	.reg_h_fre_con = 0xe0,
+	.max_clock_khz = 300000,
 };
 
 static const struct mtk_dpi_conf mt2701_conf = {
 	.cal_factor = mt2701_calculate_factor,
 	.reg_h_fre_con = 0xb0,
 	.edge_sel_en = true,
+	.max_clock_khz = 150000,
 };
 
 static const struct mtk_dpi_conf mt8183_conf = {
 	.cal_factor = mt8183_calculate_factor,
 	.reg_h_fre_con = 0xe0,
+	.max_clock_khz = 100000,
+};
+
+static const struct mtk_dpi_conf mt8192_conf = {
+	.cal_factor = mt8183_calculate_factor,
+	.reg_h_fre_con = 0xe0,
+	.max_clock_khz = 150000,
 };
 
 static int mtk_dpi_probe(struct platform_device *pdev)
@@ -751,10 +775,8 @@ static int mtk_dpi_probe(struct platform_device *pdev)
 	}
 
 	dpi->irq = platform_get_irq(pdev, 0);
-	if (dpi->irq <= 0) {
-		dev_err(dev, "Failed to get irq: %d\n", dpi->irq);
+	if (dpi->irq <= 0)
 		return -EINVAL;
-	}
 
 	ret = drm_of_find_panel_or_bridge(dev->of_node, 0, 0,
 					  NULL, &dpi->next_bridge);
@@ -801,8 +823,12 @@ static const struct of_device_id mtk_dpi_of_ids[] = {
 	{ .compatible = "mediatek,mt8183-dpi",
 	  .data = &mt8183_conf,
 	},
+	{ .compatible = "mediatek,mt8192-dpi",
+	  .data = &mt8192_conf,
+	},
 	{ },
 };
+MODULE_DEVICE_TABLE(of, mtk_dpi_of_ids);
 
 struct platform_driver mtk_dpi_driver = {
 	.probe = mtk_dpi_probe,
diff --git a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
index 54ab3a324752..40df2c823187 100644
--- a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
+++ b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
@@ -61,6 +61,7 @@ struct mtk_drm_crtc {
 
 	/* lock for display hardware access */
 	struct mutex			hw_lock;
+	bool				config_updating;
 };
 
 struct mtk_crtc_state {
@@ -97,7 +98,7 @@ static void mtk_drm_crtc_finish_page_flip(struct mtk_drm_crtc *mtk_crtc)
 static void mtk_drm_finish_page_flip(struct mtk_drm_crtc *mtk_crtc)
 {
 	drm_crtc_handle_vblank(&mtk_crtc->base);
-	if (mtk_crtc->pending_needs_vblank) {
+	if (!mtk_crtc->config_updating && mtk_crtc->pending_needs_vblank) {
 		mtk_drm_crtc_finish_page_flip(mtk_crtc);
 		mtk_crtc->pending_needs_vblank = false;
 	}
@@ -425,7 +426,8 @@ static void mtk_crtc_ddp_config(struct drm_crtc *crtc,
 	}
 }
 
-static void mtk_drm_crtc_hw_config(struct mtk_drm_crtc *mtk_crtc)
+static void mtk_drm_crtc_update_config(struct mtk_drm_crtc *mtk_crtc,
+				       bool needs_vblank)
 {
 #if IS_REACHABLE(CONFIG_MTK_CMDQ)
 	struct cmdq_pkt *cmdq_handle;
@@ -436,6 +438,10 @@ static void mtk_drm_crtc_hw_config(struct mtk_drm_crtc *mtk_crtc)
 	int i;
 
 	mutex_lock(&mtk_crtc->hw_lock);
+	mtk_crtc->config_updating = true;
+	if (needs_vblank)
+		mtk_crtc->pending_needs_vblank = true;
+
 	for (i = 0; i < mtk_crtc->layer_nr; i++) {
 		struct drm_plane *plane = &mtk_crtc->planes[i];
 		struct mtk_plane_state *plane_state;
@@ -472,6 +478,7 @@ static void mtk_drm_crtc_hw_config(struct mtk_drm_crtc *mtk_crtc)
 		cmdq_pkt_flush_async(cmdq_handle, ddp_cmdq_cb, cmdq_handle);
 	}
 #endif
+	mtk_crtc->config_updating = false;
 	mutex_unlock(&mtk_crtc->hw_lock);
 }
 
@@ -532,7 +539,7 @@ void mtk_drm_crtc_async_update(struct drm_crtc *crtc, struct drm_plane *plane,
 		return;
 
 	plane_helper_funcs->atomic_update(plane, state);
-	mtk_drm_crtc_hw_config(mtk_crtc);
+	mtk_drm_crtc_update_config(mtk_crtc, false);
 }
 
 static void mtk_drm_crtc_atomic_enable(struct drm_crtc *crtc,
@@ -582,7 +589,7 @@ static void mtk_drm_crtc_atomic_disable(struct drm_crtc *crtc,
 	}
 	mtk_crtc->pending_planes = true;
 
-	mtk_drm_crtc_hw_config(mtk_crtc);
+	mtk_drm_crtc_update_config(mtk_crtc, false);
 	/* Wait for planes to be disabled */
 	drm_crtc_wait_one_vblank(crtc);
 
@@ -618,14 +625,12 @@ static void mtk_drm_crtc_atomic_flush(struct drm_crtc *crtc,
 	struct mtk_drm_crtc *mtk_crtc = to_mtk_crtc(crtc);
 	int i;
 
-	if (mtk_crtc->event)
-		mtk_crtc->pending_needs_vblank = true;
 	if (crtc->state->color_mgmt_changed)
 		for (i = 0; i < mtk_crtc->ddp_comp_nr; i++) {
 			mtk_ddp_gamma_set(mtk_crtc->ddp_comp[i], crtc->state);
 			mtk_ddp_ctm_set(mtk_crtc->ddp_comp[i], crtc->state);
 		}
-	mtk_drm_crtc_hw_config(mtk_crtc);
+	mtk_drm_crtc_update_config(mtk_crtc, !!mtk_crtc->event);
 }
 
 static const struct drm_crtc_funcs mtk_crtc_funcs = {
diff --git a/drivers/gpu/drm/mediatek/mtk_drm_drv.c b/drivers/gpu/drm/mediatek/mtk_drm_drv.c
index b013d56d2777..b46bdb8985da 100644
--- a/drivers/gpu/drm/mediatek/mtk_drm_drv.c
+++ b/drivers/gpu/drm/mediatek/mtk_drm_drv.c
@@ -470,6 +470,7 @@ static const struct of_device_id mtk_drm_of_ids[] = {
 	  .data = &mt8183_mmsys_driver_data},
 	{ }
 };
+MODULE_DEVICE_TABLE(of, mtk_drm_of_ids);
 
 static int mtk_drm_probe(struct platform_device *pdev)
 {
diff --git a/drivers/gpu/drm/mediatek/mtk_dsi.c b/drivers/gpu/drm/mediatek/mtk_dsi.c
index a1ff152ef468..ae403c67cbd9 100644
--- a/drivers/gpu/drm/mediatek/mtk_dsi.c
+++ b/drivers/gpu/drm/mediatek/mtk_dsi.c
@@ -401,8 +401,11 @@ static void mtk_dsi_rxtx_control(struct mtk_dsi *dsi)
 		break;
 	}
 
-	tmp_reg |= (dsi->mode_flags & MIPI_DSI_CLOCK_NON_CONTINUOUS) << 6;
-	tmp_reg |= (dsi->mode_flags & MIPI_DSI_MODE_EOT_PACKET) >> 3;
+	if (dsi->mode_flags & MIPI_DSI_CLOCK_NON_CONTINUOUS)
+		tmp_reg |= HSTX_CKLP_EN;
+
+	if (!(dsi->mode_flags & MIPI_DSI_MODE_EOT_PACKET))
+		tmp_reg |= DIS_EOT;
 
 	writel(tmp_reg, dsi->regs + DSI_TXRX_CTRL);
 }
@@ -478,6 +481,7 @@ static void mtk_dsi_config_vdo_timing(struct mtk_dsi *dsi)
 			  timing->da_hs_zero + timing->da_hs_exit + 3;
 
 	delta = dsi->mode_flags & MIPI_DSI_MODE_VIDEO_BURST ? 18 : 12;
+	delta += dsi->mode_flags & MIPI_DSI_MODE_EOT_PACKET ? 2 : 0;
 
 	horizontal_frontporch_byte = vm->hfront_porch * dsi_tmp_buf_bpp;
 	horizontal_front_back_byte = horizontal_frontporch_byte + horizontal_backporch_byte;
@@ -1141,6 +1145,7 @@ static const struct of_device_id mtk_dsi_of_match[] = {
 	  .data = &mt8183_dsi_driver_data },
 	{ },
 };
+MODULE_DEVICE_TABLE(of, mtk_dsi_of_match);
 
 struct platform_driver mtk_dsi_driver = {
 	.probe = mtk_dsi_probe,
diff --git a/drivers/gpu/drm/mediatek/mtk_hdmi.c b/drivers/gpu/drm/mediatek/mtk_hdmi.c
index 8ee55f9e2954..dea46d66e712 100644
--- a/drivers/gpu/drm/mediatek/mtk_hdmi.c
+++ b/drivers/gpu/drm/mediatek/mtk_hdmi.c
@@ -153,7 +153,7 @@ struct mtk_hdmi_conf {
 struct mtk_hdmi {
 	struct drm_bridge bridge;
 	struct drm_bridge *next_bridge;
-	struct drm_connector conn;
+	struct drm_connector *curr_conn;/* current connector (only valid when 'enabled') */
 	struct device *dev;
 	const struct mtk_hdmi_conf *conf;
 	struct phy *phy;
@@ -186,11 +186,6 @@ static inline struct mtk_hdmi *hdmi_ctx_from_bridge(struct drm_bridge *b)
 	return container_of(b, struct mtk_hdmi, bridge);
 }
 
-static inline struct mtk_hdmi *hdmi_ctx_from_conn(struct drm_connector *c)
-{
-	return container_of(c, struct mtk_hdmi, conn);
-}
-
 static u32 mtk_hdmi_read(struct mtk_hdmi *hdmi, u32 offset)
 {
 	return readl(hdmi->regs + offset);
@@ -974,7 +969,7 @@ static int mtk_hdmi_setup_avi_infoframe(struct mtk_hdmi *hdmi,
 	ssize_t err;
 
 	err = drm_hdmi_avi_infoframe_from_display_mode(&frame,
-						       &hdmi->conn, mode);
+						       hdmi->curr_conn, mode);
 	if (err < 0) {
 		dev_err(hdmi->dev,
 			"Failed to get AVI infoframe from mode: %zd\n", err);
@@ -1054,7 +1049,7 @@ static int mtk_hdmi_setup_vendor_specific_infoframe(struct mtk_hdmi *hdmi,
 	ssize_t err;
 
 	err = drm_hdmi_vendor_infoframe_from_display_mode(&frame,
-							  &hdmi->conn, mode);
+							  hdmi->curr_conn, mode);
 	if (err) {
 		dev_err(hdmi->dev,
 			"Failed to get vendor infoframe from mode: %zd\n", err);
@@ -1201,48 +1196,16 @@ mtk_hdmi_update_plugged_status(struct mtk_hdmi *hdmi)
 	       connector_status_connected : connector_status_disconnected;
 }
 
-static enum drm_connector_status hdmi_conn_detect(struct drm_connector *conn,
-						  bool force)
+static enum drm_connector_status mtk_hdmi_detect(struct mtk_hdmi *hdmi)
 {
-	struct mtk_hdmi *hdmi = hdmi_ctx_from_conn(conn);
 	return mtk_hdmi_update_plugged_status(hdmi);
 }
 
-static void hdmi_conn_destroy(struct drm_connector *conn)
-{
-	struct mtk_hdmi *hdmi = hdmi_ctx_from_conn(conn);
-
-	mtk_cec_set_hpd_event(hdmi->cec_dev, NULL, NULL);
-
-	drm_connector_cleanup(conn);
-}
-
-static int mtk_hdmi_conn_get_modes(struct drm_connector *conn)
-{
-	struct mtk_hdmi *hdmi = hdmi_ctx_from_conn(conn);
-	struct edid *edid;
-	int ret;
-
-	if (!hdmi->ddc_adpt)
-		return -ENODEV;
-
-	edid = drm_get_edid(conn, hdmi->ddc_adpt);
-	if (!edid)
-		return -ENODEV;
-
-	hdmi->dvi_mode = !drm_detect_monitor_audio(edid);
-
-	drm_connector_update_edid_property(conn, edid);
-
-	ret = drm_add_edid_modes(conn, edid);
-	kfree(edid);
-	return ret;
-}
-
-static int mtk_hdmi_conn_mode_valid(struct drm_connector *conn,
-				    struct drm_display_mode *mode)
+static int mtk_hdmi_bridge_mode_valid(struct drm_bridge *bridge,
+				      const struct drm_display_info *info,
+				      const struct drm_display_mode *mode)
 {
-	struct mtk_hdmi *hdmi = hdmi_ctx_from_conn(conn);
+	struct mtk_hdmi *hdmi = hdmi_ctx_from_bridge(bridge);
 	struct drm_bridge *next_bridge;
 
 	dev_dbg(hdmi->dev, "xres=%d, yres=%d, refresh=%d, intl=%d clock=%d\n",
@@ -1267,74 +1230,57 @@ static int mtk_hdmi_conn_mode_valid(struct drm_connector *conn,
 	return drm_mode_validate_size(mode, 0x1fff, 0x1fff);
 }
 
-static struct drm_encoder *mtk_hdmi_conn_best_enc(struct drm_connector *conn)
-{
-	struct mtk_hdmi *hdmi = hdmi_ctx_from_conn(conn);
-
-	return hdmi->bridge.encoder;
-}
-
-static const struct drm_connector_funcs mtk_hdmi_connector_funcs = {
-	.detect = hdmi_conn_detect,
-	.fill_modes = drm_helper_probe_single_connector_modes,
-	.destroy = hdmi_conn_destroy,
-	.reset = drm_atomic_helper_connector_reset,
-	.atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
-	.atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
-};
-
-static const struct drm_connector_helper_funcs
-		mtk_hdmi_connector_helper_funcs = {
-	.get_modes = mtk_hdmi_conn_get_modes,
-	.mode_valid = mtk_hdmi_conn_mode_valid,
-	.best_encoder = mtk_hdmi_conn_best_enc,
-};
-
 static void mtk_hdmi_hpd_event(bool hpd, struct device *dev)
 {
 	struct mtk_hdmi *hdmi = dev_get_drvdata(dev);
 
-	if (hdmi && hdmi->bridge.encoder && hdmi->bridge.encoder->dev)
+	if (hdmi && hdmi->bridge.encoder && hdmi->bridge.encoder->dev) {
+		static enum drm_connector_status status;
+
+		status = mtk_hdmi_detect(hdmi);
 		drm_helper_hpd_irq_event(hdmi->bridge.encoder->dev);
+		drm_bridge_hpd_notify(&hdmi->bridge, status);
+	}
 }
 
 /*
  * Bridge callbacks
  */
 
+static enum drm_connector_status mtk_hdmi_bridge_detect(struct drm_bridge *bridge)
+{
+	struct mtk_hdmi *hdmi = hdmi_ctx_from_bridge(bridge);
+
+	return mtk_hdmi_detect(hdmi);
+}
+
+static struct edid *mtk_hdmi_bridge_get_edid(struct drm_bridge *bridge,
+					     struct drm_connector *connector)
+{
+	struct mtk_hdmi *hdmi = hdmi_ctx_from_bridge(bridge);
+	struct edid *edid;
+
+	if (!hdmi->ddc_adpt)
+		return NULL;
+	edid = drm_get_edid(connector, hdmi->ddc_adpt);
+	if (!edid)
+		return NULL;
+	hdmi->dvi_mode = !drm_detect_monitor_audio(edid);
+	return edid;
+}
+
 static int mtk_hdmi_bridge_attach(struct drm_bridge *bridge,
 				  enum drm_bridge_attach_flags flags)
 {
 	struct mtk_hdmi *hdmi = hdmi_ctx_from_bridge(bridge);
 	int ret;
 
-	if (flags & DRM_BRIDGE_ATTACH_NO_CONNECTOR) {
-		DRM_ERROR("Fix bridge driver to make connector optional!");
+	if (!(flags & DRM_BRIDGE_ATTACH_NO_CONNECTOR)) {
+		DRM_ERROR("%s: The flag DRM_BRIDGE_ATTACH_NO_CONNECTOR must be supplied\n",
+			  __func__);
 		return -EINVAL;
 	}
 
-	ret = drm_connector_init_with_ddc(bridge->encoder->dev, &hdmi->conn,
-					  &mtk_hdmi_connector_funcs,
-					  DRM_MODE_CONNECTOR_HDMIA,
-					  hdmi->ddc_adpt);
-	if (ret) {
-		dev_err(hdmi->dev, "Failed to initialize connector: %d\n", ret);
-		return ret;
-	}
-	drm_connector_helper_add(&hdmi->conn, &mtk_hdmi_connector_helper_funcs);
-
-	hdmi->conn.polled = DRM_CONNECTOR_POLL_HPD;
-	hdmi->conn.interlace_allowed = true;
-	hdmi->conn.doublescan_allowed = false;
-
-	ret = drm_connector_attach_encoder(&hdmi->conn,
-						bridge->encoder);
-	if (ret) {
-		dev_err(hdmi->dev,
-			"Failed to attach connector to encoder: %d\n", ret);
-		return ret;
-	}
-
 	if (hdmi->next_bridge) {
 		ret = drm_bridge_attach(bridge->encoder, hdmi->next_bridge,
 					bridge, flags);
@@ -1357,7 +1303,8 @@ static bool mtk_hdmi_bridge_mode_fixup(struct drm_bridge *bridge,
 	return true;
 }
 
-static void mtk_hdmi_bridge_disable(struct drm_bridge *bridge)
+static void mtk_hdmi_bridge_atomic_disable(struct drm_bridge *bridge,
+					   struct drm_bridge_state *old_bridge_state)
 {
 	struct mtk_hdmi *hdmi = hdmi_ctx_from_bridge(bridge);
 
@@ -1368,10 +1315,13 @@ static void mtk_hdmi_bridge_disable(struct drm_bridge *bridge)
 	clk_disable_unprepare(hdmi->clk[MTK_HDMI_CLK_HDMI_PIXEL]);
 	clk_disable_unprepare(hdmi->clk[MTK_HDMI_CLK_HDMI_PLL]);
 
+	hdmi->curr_conn = NULL;
+
 	hdmi->enabled = false;
 }
 
-static void mtk_hdmi_bridge_post_disable(struct drm_bridge *bridge)
+static void mtk_hdmi_bridge_atomic_post_disable(struct drm_bridge *bridge,
+						struct drm_bridge_state *old_state)
 {
 	struct mtk_hdmi *hdmi = hdmi_ctx_from_bridge(bridge);
 
@@ -1406,7 +1356,8 @@ static void mtk_hdmi_bridge_mode_set(struct drm_bridge *bridge,
 	drm_mode_copy(&hdmi->mode, adjusted_mode);
 }
 
-static void mtk_hdmi_bridge_pre_enable(struct drm_bridge *bridge)
+static void mtk_hdmi_bridge_atomic_pre_enable(struct drm_bridge *bridge,
+					      struct drm_bridge_state *old_state)
 {
 	struct mtk_hdmi *hdmi = hdmi_ctx_from_bridge(bridge);
 
@@ -1426,10 +1377,16 @@ static void mtk_hdmi_send_infoframe(struct mtk_hdmi *hdmi,
 		mtk_hdmi_setup_vendor_specific_infoframe(hdmi, mode);
 }
 
-static void mtk_hdmi_bridge_enable(struct drm_bridge *bridge)
+static void mtk_hdmi_bridge_atomic_enable(struct drm_bridge *bridge,
+					  struct drm_bridge_state *old_state)
 {
+	struct drm_atomic_state *state = old_state->base.state;
 	struct mtk_hdmi *hdmi = hdmi_ctx_from_bridge(bridge);
 
+	/* Retrieve the connector through the atomic state. */
+	hdmi->curr_conn = drm_atomic_get_new_connector_for_encoder(state,
+								   bridge->encoder);
+
 	mtk_hdmi_output_set_display_mode(hdmi, &hdmi->mode);
 	clk_prepare_enable(hdmi->clk[MTK_HDMI_CLK_HDMI_PLL]);
 	clk_prepare_enable(hdmi->clk[MTK_HDMI_CLK_HDMI_PIXEL]);
@@ -1440,13 +1397,19 @@ static void mtk_hdmi_bridge_enable(struct drm_bridge *bridge)
 }
 
 static const struct drm_bridge_funcs mtk_hdmi_bridge_funcs = {
+	.mode_valid = mtk_hdmi_bridge_mode_valid,
+	.atomic_duplicate_state = drm_atomic_helper_bridge_duplicate_state,
+	.atomic_destroy_state = drm_atomic_helper_bridge_destroy_state,
+	.atomic_reset = drm_atomic_helper_bridge_reset,
 	.attach = mtk_hdmi_bridge_attach,
 	.mode_fixup = mtk_hdmi_bridge_mode_fixup,
-	.disable = mtk_hdmi_bridge_disable,
-	.post_disable = mtk_hdmi_bridge_post_disable,
+	.atomic_disable = mtk_hdmi_bridge_atomic_disable,
+	.atomic_post_disable = mtk_hdmi_bridge_atomic_post_disable,
 	.mode_set = mtk_hdmi_bridge_mode_set,
-	.pre_enable = mtk_hdmi_bridge_pre_enable,
-	.enable = mtk_hdmi_bridge_enable,
+	.atomic_pre_enable = mtk_hdmi_bridge_atomic_pre_enable,
+	.atomic_enable = mtk_hdmi_bridge_atomic_enable,
+	.detect = mtk_hdmi_bridge_detect,
+	.get_edid = mtk_hdmi_bridge_get_edid,
 };
 
 static int mtk_hdmi_dt_parse_pdata(struct mtk_hdmi *hdmi,
@@ -1662,8 +1625,10 @@ static int mtk_hdmi_audio_get_eld(struct device *dev, void *data, uint8_t *buf,
 {
 	struct mtk_hdmi *hdmi = dev_get_drvdata(dev);
 
-	memcpy(buf, hdmi->conn.eld, min(sizeof(hdmi->conn.eld), len));
-
+	if (hdmi->enabled)
+		memcpy(buf, hdmi->curr_conn->eld, min(sizeof(hdmi->curr_conn->eld), len));
+	else
+		memset(buf, 0, len);
 	return 0;
 }
 
@@ -1755,6 +1720,9 @@ static int mtk_drm_hdmi_probe(struct platform_device *pdev)
 
 	hdmi->bridge.funcs = &mtk_hdmi_bridge_funcs;
 	hdmi->bridge.of_node = pdev->dev.of_node;
+	hdmi->bridge.ops = DRM_BRIDGE_OP_DETECT | DRM_BRIDGE_OP_EDID
+			 | DRM_BRIDGE_OP_HPD;
+	hdmi->bridge.type = DRM_MODE_CONNECTOR_HDMIA;
 	drm_bridge_add(&hdmi->bridge);
 
 	ret = mtk_hdmi_clk_enable_audio(hdmi);
@@ -1818,6 +1786,7 @@ static const struct of_device_id mtk_drm_hdmi_of_ids[] = {
 	},
 	{}
 };
+MODULE_DEVICE_TABLE(of, mtk_drm_hdmi_of_ids);
 
 static struct platform_driver mtk_hdmi_driver = {
 	.probe = mtk_drm_hdmi_probe,
diff --git a/drivers/gpu/drm/mediatek/mtk_hdmi_ddc.c b/drivers/gpu/drm/mediatek/mtk_hdmi_ddc.c
index 62dbad5675bb..6207eac88550 100644
--- a/drivers/gpu/drm/mediatek/mtk_hdmi_ddc.c
+++ b/drivers/gpu/drm/mediatek/mtk_hdmi_ddc.c
@@ -335,6 +335,7 @@ static const struct of_device_id mtk_hdmi_ddc_match[] = {
 	{ .compatible = "mediatek,mt8173-hdmi-ddc", },
 	{},
 };
+MODULE_DEVICE_TABLE(of, mtk_hdmi_ddc_match);
 
 struct platform_driver mtk_hdmi_ddc_driver = {
 	.probe = mtk_hdmi_ddc_probe,