From: Vignesh Raghavendra <vigneshr@ti.com>
To: Pawel Laszczak <pawell@cadence.com>, <felipe.balbi@linux.intel.com>
Cc: <gregkh@linuxfoundation.org>, <linux-usb@vger.kernel.org>,
<rogerq@ti.com>, <linux-kernel@vger.kernel.org>,
<jbergsagel@ti.com>, <nsekhar@ti.com>, <nm@ti.com>,
<sureshp@cadence.com>, <jpawar@cadence.com>,
<kurahul@cadence.com>, <aniljoy@cadence.com>
Subject: Re: [PATCH v10 5/6] usb:cdns3 Add Cadence USB3 DRD Driver
Date: Fri, 23 Aug 2019 14:23:55 +0530 [thread overview]
Message-ID: <c5067780-9dfe-2a3e-3498-22f3c1dadb87@ti.com> (raw)
In-Reply-To: <1563733939-21214-6-git-send-email-pawell@cadence.com>
Hi,
On 22/07/19 12:02 AM, Pawel Laszczak wrote:
> +
> +/**
> + * cdns3_req_ep0_get_status - Handling of GET_STATUS standard USB request
> + * @priv_dev: extended gadget object
> + * @ctrl_req: pointer to received setup packet
> + *
> + * Returns 0 if success, error code on error
> + */
> +static int cdns3_req_ep0_get_status(struct cdns3_device *priv_dev,
> + struct usb_ctrlrequest *ctrl)
> +{
> + __le16 *response_pkt;
> + u16 usb_status = 0;
> + u32 recip;
> + u32 reg;
> +
> + recip = ctrl->bRequestType & USB_RECIP_MASK;
> +
> + switch (recip) {
> + case USB_RECIP_DEVICE:
> + /* self powered */
> + if (priv_dev->is_selfpowered)
> + usb_status = BIT(USB_DEVICE_SELF_POWERED);
> +
> + if (priv_dev->wake_up_flag)
> + usb_status |= BIT(USB_DEVICE_REMOTE_WAKEUP);
> +
> + if (priv_dev->gadget.speed != USB_SPEED_SUPER)
> + break;
> +
> + reg = readl(&priv_dev->regs->usb_sts);
I see usb_sts is read, but never used in this function?
> +
> + if (priv_dev->u1_allowed)
> + usb_status |= BIT(USB_DEV_STAT_U1_ENABLED);
> +
> + if (priv_dev->u2_allowed)
> + usb_status |= BIT(USB_DEV_STAT_U2_ENABLED);
> +
> + break;
> + case USB_RECIP_INTERFACE:
> + return cdns3_ep0_delegate_req(priv_dev, ctrl);
> + case USB_RECIP_ENDPOINT:
> + /* check if endpoint is stalled */
> + cdns3_select_ep(priv_dev, ctrl->wIndex);
> + if (EP_STS_STALL(readl(&priv_dev->regs->ep_sts)))
> + usb_status = BIT(USB_ENDPOINT_HALT);
> + break;
> + default:
> + return -EINVAL;
> + }
> +
> + response_pkt = (__le16 *)priv_dev->setup_buf;
> + *response_pkt = cpu_to_le16(usb_status);
> +
> + cdns3_ep0_run_transfer(priv_dev, priv_dev->setup_dma,
> + sizeof(*response_pkt), 1, 0);
> + return 0;
> +}
> +
--
Regards
Vignesh
next prev parent reply other threads:[~2019-08-23 8:53 UTC|newest]
Thread overview: 59+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-07-21 18:32 [PATCH v10 0/6] Introduced new Cadence USBSS DRD Driver Pawel Laszczak
2019-07-21 18:32 ` [PATCH v10 1/6] dt-bindings: add binding for USBSS-DRD controller Pawel Laszczak
2019-07-21 18:32 ` [PATCH v10 2/6] usb:common Separated decoding functions from dwc3 driver Pawel Laszczak
2019-07-21 19:05 ` Joe Perches
2019-07-21 20:45 ` Alan Stern
2019-07-21 20:54 ` Joe Perches
2019-07-22 10:06 ` Pawel Laszczak
2019-07-22 11:49 ` gregkh
2019-07-21 18:32 ` [PATCH v10 3/6] usb:common Patch simplify usb_decode_set_clear_feature function Pawel Laszczak
2019-07-21 19:07 ` Joe Perches
2019-07-22 10:12 ` Pawel Laszczak
2019-07-21 18:32 ` [PATCH v10 4/6] usb:common Simplify usb_decode_get_set_descriptor function Pawel Laszczak
2019-07-21 18:32 ` [PATCH v10 5/6] usb:cdns3 Add Cadence USB3 DRD Driver Pawel Laszczak
2019-07-31 3:36 ` Pawel Laszczak
2019-08-07 12:08 ` Roger Quadros
2019-08-11 11:59 ` Pawel Laszczak
2019-08-12 8:45 ` Roger Quadros
2019-08-12 9:43 ` Pawel Laszczak
2019-08-12 10:31 ` Heikki Krogerus
2019-08-12 11:05 ` Roger Quadros
2019-08-12 12:46 ` Felipe Balbi
2019-08-12 13:04 ` Roger Quadros
2019-08-13 5:15 ` Felipe Balbi
2019-08-13 7:30 ` Chunfeng Yun
2019-08-13 7:48 ` Roger Quadros
2019-08-13 8:50 ` Chunfeng Yun
2019-08-12 10:05 ` Roger Quadros
2019-08-12 11:10 ` Pawel Laszczak
2019-08-14 13:32 ` Roger Quadros
2019-08-15 6:10 ` Felipe Balbi
2019-08-19 8:20 ` Pawel Laszczak
2019-08-14 13:38 ` Roger Quadros
2019-08-14 14:30 ` Pawel Laszczak
2019-08-15 11:22 ` Roger Quadros
2019-08-19 10:30 ` Pawel Laszczak
2019-08-19 10:59 ` Roger Quadros
2019-08-23 8:53 ` Vignesh Raghavendra [this message]
2019-08-23 9:39 ` Pawel Laszczak
2019-08-26 2:16 ` Peter Chen
2019-08-26 7:53 ` Pawel Laszczak
2019-07-21 18:32 ` [PATCH v10 6/6] usb:cdns3 Fix for stuck packets in on-chip OUT buffer Pawel Laszczak
2019-07-21 19:03 ` [PATCH v10 0/6] Introduced new Cadence USBSS DRD Driver Pavel Machek
2019-07-22 9:58 ` Pawel Laszczak
2019-07-22 11:48 ` gregkh
2019-07-22 11:56 ` Pavel Machek
2019-07-22 12:11 ` gregkh
2019-07-22 12:11 ` Pawel Laszczak
2019-07-22 21:00 ` Pavel Machek
2019-07-23 4:32 ` Pawel Laszczak
2019-08-07 11:05 ` Roger Quadros
2019-08-08 4:12 ` Pawel Laszczak
2019-08-09 10:36 ` Roger Quadros
2019-08-09 10:44 ` Felipe Balbi
2019-08-13 8:22 ` Pavel Machek
2019-08-15 12:12 ` Roger Quadros
2019-08-15 14:39 ` Alan Stern
2019-08-19 12:08 ` Roger Quadros
2019-08-19 14:19 ` Alan Stern
2019-08-21 9:54 ` Roger Quadros
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