Hi Andy,
On 2/23/25 20:30, Andy Yan wrote:
(snip)
+struct dw_dp *dw_dp_bind(struct device *dev, struct drm_encoder *encoder,
+ const struct dw_dp_plat_data *plat_data)
+{
+ struct platform_device *pdev = to_platform_device(dev);
+ struct dw_dp *dp;
+ struct drm_bridge *bridge;
+ void __iomem *res;
+ int ret;
+
+ dp = devm_kzalloc(dev, sizeof(*dp), GFP_KERNEL);
+ if (!dp)
+ return ERR_PTR(-ENOMEM);
+
+ dp->dev = dev;
+ dp->video.pixel_mode = DW_DP_MP_QUAD_PIXEL;
+
+ dp->plat_data = plat_data;
+ bridge = &dp->bridge;
+ mutex_init(&dp->irq_lock);
+ INIT_WORK(&dp->hpd_work, dw_dp_hpd_work);
+ init_completion(&dp->complete);
+
+ res = devm_platform_ioremap_resource(pdev, 0);
+ if (IS_ERR(res))
+ return ERR_CAST(res);
+
+ dp->regmap = devm_regmap_init_mmio(dev, res, &dw_dp_regmap_config);
+ if (IS_ERR(dp->regmap)) {
+ dev_err_probe(dev, PTR_ERR(dp->regmap), "failed to create
regmap\n");
+ return ERR_CAST(dp->regmap);
+ }
+
+ dp->phy = devm_of_phy_get(dev, dev->of_node, NULL);
+ if (IS_ERR(dp->phy)) {
+ dev_err_probe(dev, PTR_ERR(dp->phy), "failed to get phy\n");
+ return ERR_CAST(dp->phy);
+ }
+
+ dp->apb_clk = devm_clk_get_enabled(dev, "apb");
+ if (IS_ERR(dp->apb_clk)) {
+ dev_err_probe(dev, PTR_ERR(dp->apb_clk), "failed to get apb
clock\n");
+ return ERR_CAST(dp->apb_clk);
+ }
+
+ dp->aux_clk = devm_clk_get_enabled(dev, "aux");
+ if (IS_ERR(dp->aux_clk)) {
+ dev_err_probe(dev, PTR_ERR(dp->aux_clk), "failed to get aux
clock\n");
+ return ERR_CAST(dp->aux_clk);
+ }
+
+ dp->i2s_clk = devm_clk_get(dev, "i2s");
+ if (IS_ERR(dp->i2s_clk)) {
+ dev_err_probe(dev, PTR_ERR(dp->i2s_clk), "failed to get i2s
clock\n");
+ return ERR_CAST(dp->i2s_clk);
+ }
+
+ dp->spdif_clk = devm_clk_get(dev, "spdif");
+ if (IS_ERR(dp->spdif_clk)) {
+ dev_err_probe(dev, PTR_ERR(dp->spdif_clk), "failed to get spdif
clock\n");
+ return ERR_CAST(dp->spdif_clk);
+ }
+
+ dp->hdcp_clk = devm_clk_get(dev, "hdcp");
+ if (IS_ERR(dp->hdcp_clk)) {
+ dev_err_probe(dev, PTR_ERR(dp->hdcp_clk), "failed to get hdcp
clock\n");
+ return ERR_CAST(dp->hdcp_clk);
+ }
+
+ dp->rstc = devm_reset_control_get(dev, NULL);
+ if (IS_ERR(dp->rstc)) {
+ dev_err_probe(dev, PTR_ERR(dp->rstc), "failed to get reset
control\n");
+ return ERR_CAST(dp->rstc);
+ }
+
+ dp->irq = platform_get_irq(pdev, 0);
+ if (dp->irq < 0)
+ return ERR_PTR(ret);
+
+ ret = devm_request_threaded_irq(dev, dp->irq, NULL, dw_dp_irq,
+ IRQF_ONESHOT, dev_name(dev), dp);
+ if (ret) {
+ dev_err_probe(dev, ret, "failed to request irq\n");
+ return ERR_PTR(ret);
+ }
+
+ bridge->of_node = dev->of_node;
+ bridge->funcs = &dw_dp_bridge_funcs;
+ bridge->ops = DRM_BRIDGE_OP_DETECT | DRM_BRIDGE_OP_EDID |
DRM_BRIDGE_OP_HPD;
+ bridge->type = DRM_MODE_CONNECTOR_DisplayPort;
+ bridge->ycbcr_420_allowed = true;
+ bridge->vendor = "Synopsys";
+ bridge->product = "DW DP TX";
+
+ platform_set_drvdata(pdev, dp);
+
+ dp->aux.dev = dev;
+ dp->aux.drm_dev = encoder->dev;
+ dp->aux.name = dev_name(dev);
+ dp->aux.transfer = dw_dp_aux_transfer;
+ ret = drm_dp_aux_register(&dp->aux);
+ if (ret) {
+ dev_err_probe(dev, ret, "Aux register failed\n");
+ return ERR_PTR(ret);
+ }
+
+ ret = drm_bridge_attach(encoder, bridge, NULL,
DRM_BRIDGE_ATTACH_NO_CONNECTOR);
+ if (ret)
+ dev_err_probe(dev, ret, "Failed to attach bridge\n");
+
+ dw_dp_init_hw(dp);
+
+ return dp;
+}
EXPORT_SYMBOL_GPL(dw_dp_bind);
is required to build it as a module.
Best regards,
--
FUKAUMI Naoki
Radxa Computer (Shenzhen) Co., Ltd.
