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author | Linus Torvalds <torvalds@linux-foundation.org> | 2019-09-17 19:39:59 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2019-09-17 19:39:59 -0700 |
commit | 35f7a95266153b1cf0caca3aa9661cb721864527 (patch) | |
tree | 670f1a57e48937cc79fa5d0fd440872273ed725a /drivers/platform | |
parent | d2aaa49e281959828370667edbc1cdcc7fc4026a (diff) | |
parent | 016049a816774edc9c3cd81afa7724d7ab001585 (diff) | |
download | linux-stable-35f7a95266153b1cf0caca3aa9661cb721864527.tar.gz linux-stable-35f7a95266153b1cf0caca3aa9661cb721864527.tar.bz2 linux-stable-35f7a95266153b1cf0caca3aa9661cb721864527.zip |
Merge tag 'devprop-5.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull device properties framework updates from Rafael Wysocki:
"Improve software node support (Heikki Krogerus) and clean up two
assorted pieces of code (Andy Shevchenko, Geert Uytterhoeven)"
* tag 'devprop-5.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
software node: Initialize the return value in software_node_find_by_name()
software node: Initialize the return value in software_node_to_swnode()
ACPI / property: Fix acpi_graph_get_remote_endpoint() name in kerneldoc
device property: Remove duplicate test for NULL
platform/x86: intel_cht_int33fe: Use new API to gain access to the role switch
usb: roles: intel_xhci: Supplying software node for the role mux
software node: Add software_node_find_by_name()
Diffstat (limited to 'drivers/platform')
-rw-r--r-- | drivers/platform/x86/intel_cht_int33fe.c | 57 |
1 files changed, 10 insertions, 47 deletions
diff --git a/drivers/platform/x86/intel_cht_int33fe.c b/drivers/platform/x86/intel_cht_int33fe.c index 4fbdff48a4b5..1d5d877b9582 100644 --- a/drivers/platform/x86/intel_cht_int33fe.c +++ b/drivers/platform/x86/intel_cht_int33fe.c @@ -34,7 +34,6 @@ enum { INT33FE_NODE_MAX17047, INT33FE_NODE_PI3USB30532, INT33FE_NODE_DISPLAYPORT, - INT33FE_NODE_ROLE_SWITCH, INT33FE_NODE_USB_CONNECTOR, INT33FE_NODE_MAX, }; @@ -45,7 +44,6 @@ struct cht_int33fe_data { struct i2c_client *pi3usb30532; struct fwnode_handle *dp; - struct fwnode_handle *mux; }; static const struct software_node nodes[]; @@ -139,46 +137,10 @@ static const struct software_node nodes[] = { { "max17047", NULL, max17047_props }, { "pi3usb30532" }, { "displayport" }, - { "usb-role-switch" }, { "connector", &nodes[0], usb_connector_props, usb_connector_refs }, { } }; -static int cht_int33fe_setup_mux(struct cht_int33fe_data *data) -{ - struct fwnode_handle *fwnode; - struct device *dev; - struct device *p; - - fwnode = software_node_fwnode(&nodes[INT33FE_NODE_ROLE_SWITCH]); - if (!fwnode) - return -ENODEV; - - /* First finding the platform device */ - p = bus_find_device_by_name(&platform_bus_type, NULL, - "intel_xhci_usb_sw"); - if (!p) - return -EPROBE_DEFER; - - /* Then the mux child device */ - dev = device_find_child_by_name(p, "intel_xhci_usb_sw-role-switch"); - put_device(p); - if (!dev) - return -EPROBE_DEFER; - - /* If there already is a node for the mux, using that one. */ - if (dev->fwnode) - fwnode_remove_software_node(fwnode); - else - dev->fwnode = fwnode; - - data->mux = fwnode_handle_get(dev->fwnode); - put_device(dev); - mux_ref.node = to_software_node(data->mux); - - return 0; -} - static int cht_int33fe_setup_dp(struct cht_int33fe_data *data) { struct fwnode_handle *fwnode; @@ -211,10 +173,9 @@ static void cht_int33fe_remove_nodes(struct cht_int33fe_data *data) { software_node_unregister_nodes(nodes); - if (data->mux) { - fwnode_handle_put(data->mux); + if (mux_ref.node) { + fwnode_handle_put(software_node_fwnode(mux_ref.node)); mux_ref.node = NULL; - data->mux = NULL; } if (data->dp) { @@ -235,14 +196,16 @@ static int cht_int33fe_add_nodes(struct cht_int33fe_data *data) /* The devices that are not created in this driver need extra steps. */ /* - * There is no ACPI device node for the USB role mux, so we need to find - * the mux device and assign our node directly to it. That means we - * depend on the mux driver. This function will return -PROBE_DEFER - * until the mux device is registered. + * There is no ACPI device node for the USB role mux, so we need to wait + * until the mux driver has created software node for the mux device. + * It means we depend on the mux driver. This function will return + * -EPROBE_DEFER until the mux device is registered. */ - ret = cht_int33fe_setup_mux(data); - if (ret) + mux_ref.node = software_node_find_by_name(NULL, "intel-xhci-usb-sw"); + if (!mux_ref.node) { + ret = -EPROBE_DEFER; goto err_remove_nodes; + } /* * The DP connector does have ACPI device node. In this case we can just |