On Sat, Oct 12, 2024 at 03:35:40PM +0800, Liu Ying wrote: > Add basic HDMI video output support. Currently, only RGB888 output > pixel format is supported. At the LVDS input side, the driver > supports single LVDS link and dual LVDS links with "jeida-24" LVDS > mapping. > > Product link: > https://www.ite.com.tw/en/product/cate1/IT6263 > > Signed-off-by: Liu Ying <victor.liu@xxxxxxx> > --- > v2: > * Add AVI inforframe support. (Maxime) > * Add DRM_MODE_CONNECTOR_HDMIA. (Biju) > * Rename it6263_reset() to it6263_hw_reset(). (Biju) > * Check number of LVDS link data lanes. (Biju) > > drivers/gpu/drm/bridge/Kconfig | 8 + > drivers/gpu/drm/bridge/Makefile | 1 + > drivers/gpu/drm/bridge/ite-it6263.c | 919 ++++++++++++++++++++++++++++ > 3 files changed, 928 insertions(+) > create mode 100644 drivers/gpu/drm/bridge/ite-it6263.c > [...] > +static int it6263_parse_dt(struct it6263 *it) > +{ > + struct device *dev = it->dev; > + struct device_node *port0, *port1; > + int ret; > + > + ret = of_property_read_u8(dev->of_node, "ite,lvds-link-num-data-lanes", > + &it->lvds_link_num_dlanes); > + if (ret) { > + dev_err(dev, "failed to get LVDS link number of data lanes: %d\n", > + ret); > + return ret; > + } > + > + it->next_bridge = devm_drm_of_get_bridge(dev, dev->of_node, 2, 0); > + if (IS_ERR(it->next_bridge)) > + return dev_err_probe(dev, PTR_ERR(it->next_bridge), > + "failed to get next bridge\n"); > + > + port0 = of_graph_get_port_by_id(dev->of_node, 0); > + port1 = of_graph_get_port_by_id(dev->of_node, 1); > + if (port0 && port1) { > + if (of_property_read_bool(port0, "dual-lvds-even-pixels") && > + of_property_read_bool(port1, "dual-lvds-odd-pixels")) { > + it->lvds_dual_link = true; > + it->lvds_link12_swap = true; > + } else if (of_property_read_bool(port0, "dual-lvds-odd-pixels") && > + of_property_read_bool(port1, "dual-lvds-even-pixels")) { > + it->lvds_dual_link = true; > + } > + > + if (!it->lvds_dual_link) { > + dev_err(dev, > + "failed to get LVDS dual link pixel order\n"); > + ret = -EINVAL; > + } Please use drm_of_lvds_get_dual_link_pixel_order(), it validates that the DT definition is sound: one port for odd pixels, one port for even pixels. > + } else if (port1) { > + ret = -EINVAL; > + dev_err(dev, "single input LVDS port1 is not supported\n"); > + } else if (!port0) { > + ret = -EINVAL; > + dev_err(dev, "no input LVDS port\n"); > + } > + > + of_node_put(port0); > + of_node_put(port1); > + > + return ret; > +} > + -- With best wishes Dmitry
