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Wed, 26 Feb 2020 15:04:01 -0800 (PST) Received: from taoren-ubuntu-R90MNF91.thefacebook.com ([2620:10d:c090:500::7:5ebf]) by smtp.gmail.com with ESMTPSA id 3sm3912621pjg.27.2020.02.26.15.04.00 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 26 Feb 2020 15:04:01 -0800 (PST) From: rentao.bupt@gmail.com To: Felipe Balbi , Greg Kroah-Hartman , Joel Stanley , Andrew Jeffery , Benjamin Herrenschmidt , Chunfeng Yun , Colin Ian King , Stephen Boyd , Rob Herring , Mark Rutland , linux-usb@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-aspeed@lists.ozlabs.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, openbmc@lists.ozlabs.org, taoren@fb.com Subject: [PATCH v4 1/7] usb: gadget: aspeed: support per-vhub usb descriptors Date: Wed, 26 Feb 2020 15:03:40 -0800 Message-Id: <20200226230346.672-2-rentao.bupt@gmail.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200226230346.672-1-rentao.bupt@gmail.com> References: <20200226230346.672-1-rentao.bupt@gmail.com> X-BeenThere: linux-aspeed@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux ASPEED SoC development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: linux-aspeed-bounces+incoming=patchwork.ozlabs.org@lists.ozlabs.org Sender: "Linux-aspeed" From: Tao Ren This patch store vhub's standard usb descriptors in struct "ast_vhub" so it's more convenient to customize descriptors and potentially support multiple vhub instances in the future. Signed-off-by: Tao Ren Acked-by: Benjamin Herrenschmidt --- No change in v2/v3/v4: - the patch is added to the patch series since v4. drivers/usb/gadget/udc/aspeed-vhub/hub.c | 43 ++++++++++++++++------- drivers/usb/gadget/udc/aspeed-vhub/vhub.h | 15 ++++++++ 2 files changed, 46 insertions(+), 12 deletions(-) diff --git a/drivers/usb/gadget/udc/aspeed-vhub/hub.c b/drivers/usb/gadget/udc/aspeed-vhub/hub.c index 19b3517e04c0..9c3027306b15 100644 --- a/drivers/usb/gadget/udc/aspeed-vhub/hub.c +++ b/drivers/usb/gadget/udc/aspeed-vhub/hub.c @@ -93,11 +93,7 @@ static void ast_vhub_patch_dev_desc_usb1(struct usb_device_descriptor *desc) USB_DT_INTERFACE_SIZE + \ USB_DT_ENDPOINT_SIZE) -static const struct ast_vhub_full_cdesc { - struct usb_config_descriptor cfg; - struct usb_interface_descriptor intf; - struct usb_endpoint_descriptor ep; -} __attribute__ ((packed)) ast_vhub_conf_desc = { +static const struct ast_vhub_full_cdesc ast_vhub_conf_desc = { .cfg = { .bLength = USB_DT_CONFIG_SIZE, .bDescriptorType = USB_DT_CONFIG, @@ -266,6 +262,7 @@ static int ast_vhub_rep_desc(struct ast_vhub_ep *ep, u8 desc_type, u16 len) { size_t dsize; + struct ast_vhub *vhub = ep->vhub; EPDBG(ep, "GET_DESCRIPTOR(type:%d)\n", desc_type); @@ -281,20 +278,20 @@ static int ast_vhub_rep_desc(struct ast_vhub_ep *ep, switch(desc_type) { case USB_DT_DEVICE: dsize = USB_DT_DEVICE_SIZE; - memcpy(ep->buf, &ast_vhub_dev_desc, dsize); - BUILD_BUG_ON(dsize > sizeof(ast_vhub_dev_desc)); + memcpy(ep->buf, &vhub->vhub_dev_desc, dsize); + BUILD_BUG_ON(dsize > sizeof(vhub->vhub_dev_desc)); BUILD_BUG_ON(USB_DT_DEVICE_SIZE >= AST_VHUB_EP0_MAX_PACKET); break; case USB_DT_CONFIG: dsize = AST_VHUB_CONF_DESC_SIZE; - memcpy(ep->buf, &ast_vhub_conf_desc, dsize); - BUILD_BUG_ON(dsize > sizeof(ast_vhub_conf_desc)); + memcpy(ep->buf, &vhub->vhub_conf_desc, dsize); + BUILD_BUG_ON(dsize > sizeof(vhub->vhub_conf_desc)); BUILD_BUG_ON(AST_VHUB_CONF_DESC_SIZE >= AST_VHUB_EP0_MAX_PACKET); break; case USB_DT_HUB: dsize = AST_VHUB_HUB_DESC_SIZE; - memcpy(ep->buf, &ast_vhub_hub_desc, dsize); - BUILD_BUG_ON(dsize > sizeof(ast_vhub_hub_desc)); + memcpy(ep->buf, &vhub->vhub_hub_desc, dsize); + BUILD_BUG_ON(dsize > sizeof(vhub->vhub_hub_desc)); BUILD_BUG_ON(AST_VHUB_HUB_DESC_SIZE >= AST_VHUB_EP0_MAX_PACKET); break; default: @@ -317,7 +314,8 @@ static int ast_vhub_rep_string(struct ast_vhub_ep *ep, u8 string_id, u16 lang_id, u16 len) { - int rc = usb_gadget_get_string (&ast_vhub_strings, string_id, ep->buf); + int rc = usb_gadget_get_string(&ep->vhub->vhub_str_desc, + string_id, ep->buf); /* * This should never happen unless we put too big strings in @@ -834,9 +832,30 @@ void ast_vhub_hub_reset(struct ast_vhub *vhub) writel(0, vhub->regs + AST_VHUB_EP1_STS_CHG); } +static void ast_vhub_init_desc(struct ast_vhub *vhub) +{ + /* Initialize vhub Device Descriptor. */ + memcpy(&vhub->vhub_dev_desc, &ast_vhub_dev_desc, + sizeof(vhub->vhub_dev_desc)); + + /* Initialize vhub Configuration Descriptor. */ + memcpy(&vhub->vhub_conf_desc, &ast_vhub_conf_desc, + sizeof(vhub->vhub_conf_desc)); + + /* Initialize vhub Hub Descriptor. */ + memcpy(&vhub->vhub_hub_desc, &ast_vhub_hub_desc, + sizeof(vhub->vhub_hub_desc)); + + /* Initialize vhub String Descriptors. */ + memcpy(&vhub->vhub_str_desc, &ast_vhub_strings, + sizeof(vhub->vhub_str_desc)); +} + void ast_vhub_init_hub(struct ast_vhub *vhub) { vhub->speed = USB_SPEED_UNKNOWN; INIT_WORK(&vhub->wake_work, ast_vhub_wake_work); + + ast_vhub_init_desc(vhub); } diff --git a/drivers/usb/gadget/udc/aspeed-vhub/vhub.h b/drivers/usb/gadget/udc/aspeed-vhub/vhub.h index 761919e220d3..191f9fae7420 100644 --- a/drivers/usb/gadget/udc/aspeed-vhub/vhub.h +++ b/drivers/usb/gadget/udc/aspeed-vhub/vhub.h @@ -2,6 +2,9 @@ #ifndef __ASPEED_VHUB_H #define __ASPEED_VHUB_H +#include +#include + /***************************** * * * VHUB register definitions * @@ -373,6 +376,12 @@ struct ast_vhub_port { struct ast_vhub_dev dev; }; +struct ast_vhub_full_cdesc { + struct usb_config_descriptor cfg; + struct usb_interface_descriptor intf; + struct usb_endpoint_descriptor ep; +} __packed; + /* Global vhub structure */ struct ast_vhub { struct platform_device *pdev; @@ -409,6 +418,12 @@ struct ast_vhub { /* Upstream bus speed captured at bus reset */ unsigned int speed; + + /* Standard USB Descriptors of the vhub. */ + struct usb_device_descriptor vhub_dev_desc; + struct ast_vhub_full_cdesc vhub_conf_desc; + struct usb_hub_descriptor vhub_hub_desc; + struct usb_gadget_strings vhub_str_desc; }; /* Standard request handlers result codes */