[PATCH v2 1/5] usb: dwc3: add platform data to dwc3 core device to pass data
From: Li Jun <hidden>
Date: 2020-07-06 09:48:16
Also in:
linux-devicetree, linux-usb
Subsystem:
designware usb3 drd ip driver, the rest, usb subsystem · Maintainers:
Thinh Nguyen, Linus Torvalds, Greg Kroah-Hartman
In case dwc3 has SoC specific customizations, dwc3 glue driver can base on compatible string and pass it via platform data to dwc3 core driver; and pass xhci private data further to xhci-plat like quirks. Signed-off-by: Li Jun <redacted> --- drivers/usb/dwc3/core.h | 5 +++++ drivers/usb/dwc3/host.c | 9 +++++++++ 2 files changed, 14 insertions(+)
diff --git a/drivers/usb/dwc3/core.h b/drivers/usb/dwc3/core.h
index 0b8ea8c..3146697 100644
--- a/drivers/usb/dwc3/core.h
+++ b/drivers/usb/dwc3/core.h@@ -29,6 +29,7 @@ #include <linux/ulpi/interface.h> #include <linux/phy/phy.h> +#include "../host/xhci-plat.h" #define DWC3_MSG_MAX 500
@@ -924,6 +925,10 @@ struct dwc3_scratchpad_array { __le64 dma_adr[DWC3_MAX_HIBER_SCRATCHBUFS]; }; +struct dwc3_platform_data { + struct xhci_plat_priv *xhci_priv; +}; + /** * struct dwc3 - representation of our controller * @drd_work: workqueue used for role swapping
diff --git a/drivers/usb/dwc3/host.c b/drivers/usb/dwc3/host.c
index bef1c1a..4f8514a 100644
--- a/drivers/usb/dwc3/host.c
+++ b/drivers/usb/dwc3/host.c@@ -46,6 +46,7 @@ int dwc3_host_init(struct dwc3 *dwc) { struct property_entry props[4]; struct platform_device *xhci; + struct dwc3_platform_data *dwc3_pdata; int ret, irq; struct resource *res; struct platform_device *dwc3_pdev = to_platform_device(dwc->dev);
@@ -115,6 +116,14 @@ int dwc3_host_init(struct dwc3 *dwc) } } + dwc3_pdata = (struct dwc3_platform_data *)dev_get_platdata(dwc->dev); + if (dwc3_pdata && dwc3_pdata->xhci_priv) { + ret = platform_device_add_data(xhci, dwc3_pdata->xhci_priv, + sizeof(struct xhci_plat_priv)); + if (ret) + goto err; + } + ret = platform_device_add(xhci); if (ret) { dev_err(dwc->dev, "failed to register xHCI device\n");
--
2.7.4
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