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Date: Fri, 18 Dec 2020 22:26:13 +0000 From: Daniel Scally <djrscally@...il.com> To: Andy Shevchenko <andriy.shevchenko@...ux.intel.com> Cc: linux-kernel@...r.kernel.org, linux-acpi@...r.kernel.org, linux-media@...r.kernel.org, devel@...ica.org, rjw@...ysocki.net, lenb@...nel.org, gregkh@...uxfoundation.org, yong.zhi@...el.com, sakari.ailus@...ux.intel.com, bingbu.cao@...el.com, tian.shu.qiu@...el.com, mchehab@...nel.org, robert.moore@...el.com, erik.kaneda@...el.com, pmladek@...e.com, rostedt@...dmis.org, sergey.senozhatsky@...il.com, linux@...musvillemoes.dk, laurent.pinchart+renesas@...asonboard.com, jacopo+renesas@...ndi.org, kieran.bingham+renesas@...asonboard.com, linus.walleij@...aro.org, heikki.krogerus@...ux.intel.com, kitakar@...il.com, jorhand@...ux.microsoft.com Subject: Re: [PATCH v2 06/12] software_node: Add support for fwnode_graph*() family of functions On 18/12/2020 20:37, Andy Shevchenko wrote: > On Thu, Dec 17, 2020 at 11:43:31PM +0000, Daniel Scally wrote: >> From: Heikki Krogerus <heikki.krogerus@...ux.intel.com> >> >> This implements the remaining .graph_* callbacks in the >> fwnode operations structure for the software nodes. That makes >> the fwnode_graph*() functions available in the drivers also >> when software nodes are used. >> >> The implementation tries to mimic the "OF graph" as much as >> possible, but there is no support for the "reg" device >> property. The ports will need to have the index in their >> name which starts with "port@" (for example "port@0", "port@1", >> ...) and endpoints will use the index of the software node >> that is given to them during creation. The port nodes can >> also be grouped under a specially named "ports" subnode, >> just like in DT, if necessary. >> >> The remote-endpoints are reference properties under the >> endpoint nodes that are named "remote-endpoint". > > ... > >> + while ((port = software_node_get_next_child(parent, old))) { >> + if (!strncmp(to_swnode(port)->node->name, "port", 4)) >> + return port; >> + old = port; >> + } > > Dunno if we need defines for port and its length here. Mmm, maybe a comment? > ... > >> + ret = kstrtou32(swnode->parent->node->name + 5, 10, &endpoint->port); > > But here at least comment is needed what 5 means ('port@' I suppose). Ack - I'll add an explanatory comment (and yep, it's 'port@') >> + if (ret) >> + return ret; > >
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