Re: [PATCH v12 05/10] drm/bridge: anx7625: Check for Type-C during panel registration
From: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Date: 2023-02-21 11:51:21
Also in:
chrome-platform, dri-devel, linux-acpi, lkml
On Tue, Feb 21, 2023 at 05:50:49PM +0800, Pin-yen Lin wrote:
The output port endpoints can be connected to USB-C connectors. Running drm_of_find_panel_or_bridge() with such endpoints leads to a continuous return value of -EPROBE_DEFER, even though there is no panel present. To avoid this, check for the existence of a "mode-switch" property in the port endpoint, and skip panel registration completely if so.
...
quoted hunk ↗ jump to hunk
+ port_node = of_graph_get_port_by_id(np, 1); + fwnode_for_each_typec_mode_switch(&port_node->fwnode, fwnode) { + fwnode_handle_put(fwnode); + return 0; + }
With the proposed count API: unsigned int count; ... port_node = ... count = typec_mode_switch_node_count(&port_node->fwnode); if (count == 0) return 0; -- With Best Regards, Andy Shevchenko