diff options
Diffstat (limited to 'drivers/usb/cdns3/cdns3-gadget.c')
| -rw-r--r-- | drivers/usb/cdns3/cdns3-gadget.c | 54 |
1 files changed, 33 insertions, 21 deletions
diff --git a/drivers/usb/cdns3/cdns3-gadget.c b/drivers/usb/cdns3/cdns3-gadget.c index 5281f8d3fb3d..1f3b4a142212 100644 --- a/drivers/usb/cdns3/cdns3-gadget.c +++ b/drivers/usb/cdns3/cdns3-gadget.c @@ -155,7 +155,7 @@ static struct cdns3_request *cdns3_next_priv_request(struct list_head *list) } /** - * select_ep - selects endpoint + * cdns3_select_ep - selects endpoint * @priv_dev: extended gadget object * @ep: endpoint address */ @@ -430,9 +430,7 @@ static int cdns3_start_all_request(struct cdns3_device *priv_dev, if (ret) return ret; - list_del(&request->list); - list_add_tail(&request->list, - &priv_ep->pending_req_list); + list_move_tail(&request->list, &priv_ep->pending_req_list); if (request->stream_id != 0 || (priv_ep->flags & EP_TDLCHK_EN)) break; } @@ -484,7 +482,7 @@ static void __cdns3_descmiss_copy_data(struct usb_request *request, } /** - * cdns3_wa2_descmiss_copy_data copy data from internal requests to + * cdns3_wa2_descmiss_copy_data - copy data from internal requests to * request queued by class driver. * @priv_ep: extended endpoint object * @request: request object @@ -1102,6 +1100,19 @@ static int cdns3_ep_run_stream_transfer(struct cdns3_endpoint *priv_ep, return 0; } +static void cdns3_rearm_drdy_if_needed(struct cdns3_endpoint *priv_ep) +{ + struct cdns3_device *priv_dev = priv_ep->cdns3_dev; + + if (priv_dev->dev_ver < DEV_VER_V3) + return; + + if (readl(&priv_dev->regs->ep_sts) & EP_STS_TRBERR) { + writel(EP_STS_TRBERR, &priv_dev->regs->ep_sts); + writel(EP_CMD_DRDY, &priv_dev->regs->ep_cmd); + } +} + /** * cdns3_ep_run_transfer - start transfer on no-default endpoint hardware * @priv_ep: endpoint object @@ -1353,6 +1364,7 @@ static int cdns3_ep_run_transfer(struct cdns3_endpoint *priv_ep, /*clearing TRBERR and EP_STS_DESCMIS before seting DRDY*/ writel(EP_STS_TRBERR | EP_STS_DESCMIS, &priv_dev->regs->ep_sts); writel(EP_CMD_DRDY, &priv_dev->regs->ep_cmd); + cdns3_rearm_drdy_if_needed(priv_ep); trace_cdns3_doorbell_epx(priv_ep->name, readl(&priv_dev->regs->ep_traddr)); } @@ -1835,7 +1847,7 @@ __must_hold(&priv_dev->lock) } /** - * cdns3_device_irq_handler- interrupt handler for device part of controller + * cdns3_device_irq_handler - interrupt handler for device part of controller * * @irq: irq number for cdns3 core device * @data: structure of cdns3 @@ -1879,7 +1891,7 @@ static irqreturn_t cdns3_device_irq_handler(int irq, void *data) } /** - * cdns3_device_thread_irq_handler- interrupt handler for device part + * cdns3_device_thread_irq_handler - interrupt handler for device part * of controller * * @irq: irq number for cdns3 core device @@ -2022,7 +2034,7 @@ static void cdns3_configure_dmult(struct cdns3_device *priv_dev, } /** - * cdns3_ep_config Configure hardware endpoint + * cdns3_ep_config - Configure hardware endpoint * @priv_ep: extended endpoint object * @enable: set EP_CFG_ENABLE bit in ep_cfg register. */ @@ -2221,7 +2233,7 @@ usb_ep *cdns3_gadget_match_ep(struct usb_gadget *gadget, } /** - * cdns3_gadget_ep_alloc_request Allocates request + * cdns3_gadget_ep_alloc_request - Allocates request * @ep: endpoint object associated with request * @gfp_flags: gfp flags * @@ -2244,7 +2256,7 @@ struct usb_request *cdns3_gadget_ep_alloc_request(struct usb_ep *ep, } /** - * cdns3_gadget_ep_free_request Free memory occupied by request + * cdns3_gadget_ep_free_request - Free memory occupied by request * @ep: endpoint object associated with request * @request: request to free memory */ @@ -2261,7 +2273,7 @@ void cdns3_gadget_ep_free_request(struct usb_ep *ep, } /** - * cdns3_gadget_ep_enable Enable endpoint + * cdns3_gadget_ep_enable - Enable endpoint * @ep: endpoint object * @desc: endpoint descriptor * @@ -2396,7 +2408,7 @@ exit: } /** - * cdns3_gadget_ep_disable Disable endpoint + * cdns3_gadget_ep_disable - Disable endpoint * @ep: endpoint object * * Returns 0 on success, error code elsewhere @@ -2486,7 +2498,7 @@ static int cdns3_gadget_ep_disable(struct usb_ep *ep) } /** - * cdns3_gadget_ep_queue Transfer data on endpoint + * __cdns3_gadget_ep_queue - Transfer data on endpoint * @ep: endpoint object * @request: request object * @gfp_flags: gfp flags @@ -2586,7 +2598,7 @@ static int cdns3_gadget_ep_queue(struct usb_ep *ep, struct usb_request *request, } /** - * cdns3_gadget_ep_dequeue Remove request from transfer queue + * cdns3_gadget_ep_dequeue - Remove request from transfer queue * @ep: endpoint object associated with request * @request: request object * @@ -2653,7 +2665,7 @@ not_found: } /** - * __cdns3_gadget_ep_set_halt Sets stall on selected endpoint + * __cdns3_gadget_ep_set_halt - Sets stall on selected endpoint * Should be called after acquiring spin_lock and selecting ep * @priv_ep: endpoint object to set stall on. */ @@ -2674,7 +2686,7 @@ void __cdns3_gadget_ep_set_halt(struct cdns3_endpoint *priv_ep) } /** - * __cdns3_gadget_ep_clear_halt Clears stall on selected endpoint + * __cdns3_gadget_ep_clear_halt - Clears stall on selected endpoint * Should be called after acquiring spin_lock and selecting ep * @priv_ep: endpoint object to clear stall on */ @@ -2719,7 +2731,7 @@ int __cdns3_gadget_ep_clear_halt(struct cdns3_endpoint *priv_ep) } /** - * cdns3_gadget_ep_set_halt Sets/clears stall on selected endpoint + * cdns3_gadget_ep_set_halt - Sets/clears stall on selected endpoint * @ep: endpoint object to set/clear stall on * @value: 1 for set stall, 0 for clear stall * @@ -2765,7 +2777,7 @@ static const struct usb_ep_ops cdns3_gadget_ep_ops = { }; /** - * cdns3_gadget_get_frame Returns number of actual ITP frame + * cdns3_gadget_get_frame - Returns number of actual ITP frame * @gadget: gadget object * * Returns number of actual ITP frame @@ -2874,7 +2886,7 @@ static void cdns3_gadget_config(struct cdns3_device *priv_dev) } /** - * cdns3_gadget_udc_start Gadget start + * cdns3_gadget_udc_start - Gadget start * @gadget: gadget object * @driver: driver which operates on this gadget * @@ -2920,7 +2932,7 @@ static int cdns3_gadget_udc_start(struct usb_gadget *gadget, } /** - * cdns3_gadget_udc_stop Stops gadget + * cdns3_gadget_udc_stop - Stops gadget * @gadget: gadget object * * Returns 0 @@ -2983,7 +2995,7 @@ static void cdns3_free_all_eps(struct cdns3_device *priv_dev) } /** - * cdns3_init_eps Initializes software endpoints of gadget + * cdns3_init_eps - Initializes software endpoints of gadget * @priv_dev: extended gadget object * * Returns 0 on success, error code elsewhere |