Eric Lee / smarc-uboot

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Commit 9ca1b4bab10d8b3a5dbbbd98df46ce75159222b8

Authored by Bin Meng
Committed by Marek Vasut
1 parent 5624dfd5aa
Exists in smarc_8mq_lf_v2020.04 and in 17 other branches 8qm-imx_v2020.04_5.4.70_2.3.0, emb_lf_v2022.04, pitx_8mp_lf_v2020.04, smarc-8m-android-10.0.0_2.6.0, smarc-8m-android-11.0.0_2.0.0, smarc-8mp-android-11.0.0_2.0.0, smarc-imx6_v2018.03_4.14.98_2.0.0_ga, smarc-imx7_v2018.03_4.14.98_2.0.0_ga, smarc-imx_v2018.03_4.14.78_1.0.0_ga, smarc_8m-imx_v2018.03_4.14.98_2.0.0_ga, smarc_8m-imx_v2019.04_4.19.35_1.1.0, smarc_8m_00d0-imx_v2018.03_4.14.98_2.0.0_ga, smarc_8mm-imx_v2018.03_4.14.98_2.0.0_ga, smarc_8mm-imx_v2019.04_4.19.35_1.1.0, smarc_8mm-imx_v2020.04_5.4.24_2.1.0, smarc_8mp_lf_v2020.04, smarc_8mq-imx_v2020.04_5.4.24_2.1.0

dm: usb: Add a new USB controller operation 'update_hub_device' 

For USB host controllers like xHC, its internal representation of
hub needs to be updated after the hub descriptor is fetched. This
adds a new op that does this.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>

Showing 2 changed files with 31 additions and 1 deletions Side-by-side Diff

drivers/usb/host/usb-uclass.c
Diff comments   View file @ 9ca1b4b
... ... @@ -139,6 +139,17 @@
139 139 return ops->reset_root_port(bus, udev);
140 140 }
141 141  
  142 +int usb_update_hub_device(struct usb_device *udev)
  143 +{
  144 + struct udevice *bus = udev->controller_dev;
  145 + struct dm_usb_ops *ops = usb_get_ops(bus);
  146 +
  147 + if (!ops->update_hub_device)
  148 + return -ENOSYS;
  149 +
  150 + return ops->update_hub_device(bus, udev);
  151 +}
  152 +
142 153 int usb_stop(void)
143 154 {
144 155 struct udevice *bus;
... ... @@ -758,6 +758,14 @@
758 758 * reset_root_port() - Reset usb root port
759 759 */
760 760 int (*reset_root_port)(struct udevice *bus, struct usb_device *udev);
  761 +
  762 + /**
  763 + * update_hub_device() - Update HCD's internal representation of hub
  764 + *
  765 + * After a hub descriptor is fetched, notify HCD so that its internal
  766 + * representation of this hub can be updated (xHCI)
  767 + */
  768 + int (*update_hub_device)(struct udevice *bus, struct usb_device *udev);
761 769 };
762 770  
763 771 #define usb_get_ops(dev) ((struct dm_usb_ops *)(dev)->driver->ops)
... ... @@ -931,6 +939,17 @@
931 939 int usb_alloc_device(struct usb_device *dev);
932 940  
933 941 /**
  942 + * update_hub_device() - Update HCD's internal representation of hub
  943 + *
  944 + * After a hub descriptor is fetched, notify HCD so that its internal
  945 + * representation of this hub can be updated.
  946 + *
  947 + * @dev: Hub device
  948 + * @return 0 if OK, -ve on error
  949 + */
  950 +int usb_update_hub_device(struct usb_device *dev);
  951 +
  952 +/**
934 953 * usb_emul_setup_device() - Set up a new USB device emulation
935 954 *
936 955 * This is normally called when a new emulation device is bound. It tells
... ... @@ -943,7 +962,7 @@
943 962 * @desc_list: List of points or USB descriptors, terminated by NULL.
944 963 * The first entry must be struct usb_device_descriptor,
945 964 * and others follow on after that.
946   - * @return 0 if OK, -ve on error
  965 + * @return 0 if OK, -ENOSYS if not implemented, other -ve on error
947 966 */
948 967 int usb_emul_setup_device(struct udevice *dev, int maxpacketsize,
949 968 struct usb_string *strings, void **desc_list);