{"id":811004,"url":"http://patchwork.ozlabs.org/api/1.2/patches/811004/?format=json","web_url":"http://patchwork.ozlabs.org/project/uboot/patch/1504790001-24715-1-git-send-email-bmeng.cn@gmail.com/","project":{"id":18,"url":"http://patchwork.ozlabs.org/api/1.2/projects/18/?format=json","name":"U-Boot","link_name":"uboot","list_id":"u-boot.lists.denx.de","list_email":"u-boot@lists.denx.de","web_url":null,"scm_url":null,"webscm_url":null,"list_archive_url":"","list_archive_url_format":"","commit_url_format":""},"msgid":"<1504790001-24715-1-git-send-email-bmeng.cn@gmail.com>","list_archive_url":null,"date":"2017-09-07T13:13:17","name":"[U-Boot,1/5] dm: usb: Add a new USB controller operation 'get_max_xfer_size'","commit_ref":"3e59f59015e39ceb870fa8a7a12e0464e775512b","pull_url":null,"state":"accepted","archived":false,"hash":"63072a08bec384776697e62f7d027a80082d8a83","submitter":{"id":64981,"url":"http://patchwork.ozlabs.org/api/1.2/people/64981/?format=json","name":"Bin Meng","email":"bmeng.cn@gmail.com"},"delegate":{"id":1699,"url":"http://patchwork.ozlabs.org/api/1.2/users/1699/?format=json","username":"marex","first_name":"Marek","last_name":"Vasut","email":"marek.vasut@gmail.com"},"mbox":"http://patchwork.ozlabs.org/project/uboot/patch/1504790001-24715-1-git-send-email-bmeng.cn@gmail.com/mbox/","series":[{"id":1998,"url":"http://patchwork.ozlabs.org/api/1.2/series/1998/?format=json","web_url":"http://patchwork.ozlabs.org/project/uboot/list/?series=1998","date":"2017-09-07T13:13:17","name":"[U-Boot,1/5] dm: usb: Add a new USB controller operation 'get_max_xfer_size'","version":1,"mbox":"http://patchwork.ozlabs.org/series/1998/mbox/"}],"comments":"http://patchwork.ozlabs.org/api/patches/811004/comments/","check":"pending","checks":"http://patchwork.ozlabs.org/api/patches/811004/checks/","tags":{},"related":[],"headers":{"Return-Path":"","X-Original-To":"incoming@patchwork.ozlabs.org","Delivered-To":"patchwork-incoming@bilbo.ozlabs.org","Authentication-Results":["ozlabs.org;\n\tspf=none (mailfrom) smtp.mailfrom=lists.denx.de\n\t(client-ip=81.169.180.215; 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charset=\"utf-8\"","Content-Transfer-Encoding":"base64","Errors-To":"u-boot-bounces@lists.denx.de","Sender":"\"U-Boot\" "},"content":"The HCD may have limitation on the maximum bytes to be transferred\nin a USB transfer. USB class driver needs to be aware of this.\n\nSigned-off-by: Bin Meng \n---\n\n drivers/usb/host/usb-uclass.c | 11 +++++++++++\n include/usb.h | 22 +++++++++++++++++++++-\n 2 files changed, 32 insertions(+), 1 deletion(-)","diff":"diff --git a/drivers/usb/host/usb-uclass.c b/drivers/usb/host/usb-uclass.c\nindex 0b8a501..bc44fc3 100644\n--- a/drivers/usb/host/usb-uclass.c\n+++ b/drivers/usb/host/usb-uclass.c\n@@ -150,6 +150,17 @@ int usb_update_hub_device(struct usb_device *udev)\n \treturn ops->update_hub_device(bus, udev);\n }\n \n+int usb_get_max_xfer_size(struct usb_device *udev, size_t *size)\n+{\n+\tstruct udevice *bus = udev->controller_dev;\n+\tstruct dm_usb_ops *ops = usb_get_ops(bus);\n+\n+\tif (!ops->get_max_xfer_size)\n+\t\treturn -ENOSYS;\n+\n+\treturn ops->get_max_xfer_size(bus, size);\n+}\n+\n int usb_stop(void)\n {\n \tstruct udevice *bus;\ndiff --git a/include/usb.h b/include/usb.h\nindex fad0401..0ddc082 100644\n--- a/include/usb.h\n+++ b/include/usb.h\n@@ -766,6 +766,14 @@ struct dm_usb_ops {\n \t * representation of this hub can be updated (xHCI)\n \t */\n \tint (*update_hub_device)(struct udevice *bus, struct usb_device *udev);\n+\n+\t/**\n+\t * get_max_xfer_size() - Get HCD's maximum transfer bytes\n+\t *\n+\t * The HCD may have limitation on the maximum bytes to be transferred\n+\t * in a USB transfer. USB class driver needs to be aware of this.\n+\t */\n+\tint (*get_max_xfer_size)(struct udevice *bus, size_t *size);\n };\n \n #define usb_get_ops(dev)\t((struct dm_usb_ops *)(dev)->driver->ops)\n@@ -939,7 +947,7 @@ int usb_new_device(struct usb_device *dev);\n int usb_alloc_device(struct usb_device *dev);\n \n /**\n- * update_hub_device() - Update HCD's internal representation of hub\n+ * usb_update_hub_device() - Update HCD's internal representation of hub\n *\n * After a hub descriptor is fetched, notify HCD so that its internal\n * representation of this hub can be updated.\n@@ -950,6 +958,18 @@ int usb_alloc_device(struct usb_device *dev);\n int usb_update_hub_device(struct usb_device *dev);\n \n /**\n+ * usb_get_max_xfer_size() - Get HCD's maximum transfer bytes\n+ *\n+ * The HCD may have limitation on the maximum bytes to be transferred\n+ * in a USB transfer. USB class driver needs to be aware of this.\n+ *\n+ * @dev:\t\tUSB device\n+ * @size:\t\tmaximum transfer bytes\n+ * @return 0 if OK, -ve on error\n+ */\n+int usb_get_max_xfer_size(struct usb_device *dev, size_t *size);\n+\n+/**\n * usb_emul_setup_device() - Set up a new USB device emulation\n *\n * This is normally called when a new emulation device is bound. It tells\n","prefixes":["U-Boot","1/5"]}