diff options
Diffstat (limited to 'drivers/usb')
26 files changed, 2074 insertions, 186 deletions
diff --git a/drivers/usb/dwc2/core.h b/drivers/usb/dwc2/core.h index 483de2bbfaab..cb9059a8444b 100644 --- a/drivers/usb/dwc2/core.h +++ b/drivers/usb/dwc2/core.h @@ -122,6 +122,7 @@ struct dwc2_hsotg_req; * @periodic: Set if this is a periodic ep, such as Interrupt * @isochronous: Set if this is a isochronous ep * @send_zlp: Set if we need to send a zero-length packet. + * @wedged: Set if ep is wedged. * @desc_list_dma: The DMA address of descriptor chain currently in use. * @desc_list: Pointer to descriptor DMA chain head currently in use. * @desc_count: Count of entries within the DMA descriptor chain of EP. @@ -172,6 +173,7 @@ struct dwc2_hsotg_ep { unsigned int periodic:1; unsigned int isochronous:1; unsigned int send_zlp:1; + unsigned int wedged:1; unsigned int target_frame; #define TARGET_FRAME_INITIAL 0xFFFFFFFF bool frame_overrun; diff --git a/drivers/usb/dwc2/gadget.c b/drivers/usb/dwc2/gadget.c index 3146df6e6510..985b272f53d5 100644 --- a/drivers/usb/dwc2/gadget.c +++ b/drivers/usb/dwc2/gadget.c @@ -1806,7 +1806,8 @@ static int dwc2_hsotg_process_req_feature(struct dwc2_hsotg *hsotg, case USB_ENDPOINT_HALT: halted = ep->halted; - dwc2_hsotg_ep_sethalt(&ep->ep, set, true); + if (!ep->wedged) + dwc2_hsotg_ep_sethalt(&ep->ep, set, true); ret = dwc2_hsotg_send_reply(hsotg, ep0, NULL, 0); if (ret) { @@ -4066,6 +4067,7 @@ static int dwc2_hsotg_ep_enable(struct usb_ep *ep, hs_ep->isochronous = 0; hs_ep->periodic = 0; hs_ep->halted = 0; + hs_ep->wedged = 0; hs_ep->interval = desc->bInterval; switch (ep_type) { @@ -4307,6 +4309,27 @@ static int dwc2_hsotg_ep_dequeue(struct usb_ep *ep, struct usb_request *req) } /** + * dwc2_gadget_ep_set_wedge - set wedge on a given endpoint + * @ep: The endpoint to be wedged. + * + */ +static int dwc2_gadget_ep_set_wedge(struct usb_ep *ep) +{ + struct dwc2_hsotg_ep *hs_ep = our_ep(ep); + struct dwc2_hsotg *hs = hs_ep->parent; + + unsigned long flags; + int ret; + + spin_lock_irqsave(&hs->lock, flags); + hs_ep->wedged = 1; + ret = dwc2_hsotg_ep_sethalt(ep, 1, false); + spin_unlock_irqrestore(&hs->lock, flags); + + return ret; +} + +/** * dwc2_hsotg_ep_sethalt - set halt on a given endpoint * @ep: The endpoint to set halt. * @value: Set or unset the halt. @@ -4357,6 +4380,7 @@ static int dwc2_hsotg_ep_sethalt(struct usb_ep *ep, int value, bool now) epctl |= DXEPCTL_EPDIS; } else { epctl &= ~DXEPCTL_STALL; + hs_ep->wedged = 0; xfertype = epctl & DXEPCTL_EPTYPE_MASK; if (xfertype == DXEPCTL_EPTYPE_BULK || xfertype == DXEPCTL_EPTYPE_INTERRUPT) @@ -4376,6 +4400,7 @@ static int dwc2_hsotg_ep_sethalt(struct usb_ep *ep, int value, bool now) // STALL bit will be set in GOUTNAKEFF interrupt handler } else { epctl &= ~DXEPCTL_STALL; + hs_ep->wedged = 0; xfertype = epctl & DXEPCTL_EPTYPE_MASK; if (xfertype == DXEPCTL_EPTYPE_BULK || xfertype == DXEPCTL_EPTYPE_INTERRUPT) @@ -4415,6 +4440,7 @@ static const struct usb_ep_ops dwc2_hsotg_ep_ops = { .queue = dwc2_hsotg_ep_queue_lock, .dequeue = dwc2_hsotg_ep_dequeue, .set_halt = dwc2_hsotg_ep_sethalt_lock, + .set_wedge = dwc2_gadget_ep_set_wedge, /* note, don't believe we have any call for the fifo routines */ }; diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c index ba74ad7f6995..b194aecd2202 100644 --- a/drivers/usb/dwc3/core.c +++ b/drivers/usb/dwc3/core.c @@ -1267,6 +1267,7 @@ static void dwc3_get_properties(struct dwc3 *dwc) u8 rx_max_burst_prd; u8 tx_thr_num_pkt_prd; u8 tx_max_burst_prd; + u8 tx_fifo_resize_max_num; const char *usb_psy_name; int ret; @@ -1282,6 +1283,13 @@ static void dwc3_get_properties(struct dwc3 *dwc) */ hird_threshold = 12; + /* + * default to a TXFIFO size large enough to fit 6 max packets. This + * allows for systems with larger bus latencies to have some headroom + * for endpoints that have a large bMaxBurst value. + */ + tx_fifo_resize_max_num = 6; + dwc->maximum_speed = usb_get_maximum_speed(dev); dwc->max_ssp_rate = usb_get_maximum_ssp_rate(dev); dwc->dr_mode = usb_get_dr_mode(dev); @@ -1325,6 +1333,11 @@ static void dwc3_get_properties(struct dwc3 *dwc) &tx_thr_num_pkt_prd); device_property_read_u8(dev, "snps,tx-max-burst-prd", &tx_max_burst_prd); + dwc->do_fifo_resize = device_property_read_bool(dev, + "tx-fifo-resize"); + if (dwc->do_fifo_resize) + device_property_read_u8(dev, "tx-fifo-max-num", + &tx_fifo_resize_max_num); dwc->disable_scramble_quirk = device_property_read_bool(dev, "snps,disable_scramble_quirk"); @@ -1390,6 +1403,8 @@ static void dwc3_get_properties(struct dwc3 *dwc) dwc->tx_max_burst_prd = tx_max_burst_prd; dwc->imod_interval = 0; + + dwc->tx_fifo_resize_max_num = tx_fifo_resize_max_num; } /* check whether the core supports IMOD */ diff --git a/drivers/usb/dwc3/core.h b/drivers/usb/dwc3/core.h index 5991766239ba..bcfeadc862b6 100644 --- a/drivers/usb/dwc3/core.h +++ b/drivers/usb/dwc3/core.h @@ -1023,6 +1023,7 @@ struct dwc3_scratchpad_array { * @rx_max_burst_prd: max periodic ESS receive burst size * @tx_thr_num_pkt_prd: periodic ESS transmit packet count * @tx_max_burst_prd: max periodic ESS transmit burst size + * @tx_fifo_resize_max_num: max number of fifos allocated during txfifo resize * @hsphy_interface: "utmi" or "ulpi" * @connected: true when we're connected to a host, false otherwise * @delayed_status: true when gadget driver asks for delayed status @@ -1037,6 +1038,7 @@ struct dwc3_scratchpad_array { * 1 - utmi_l1_suspend_n * @is_fpga: true when we are using the FPGA board * @pending_events: true when we have pending IRQs to be handled + * @do_fifo_resize: true when txfifo resizing is enabled for dwc3 endpoints * @pullups_connected: true when Run/Stop bit is set * @setup_packet_pending: true when there's a Setup Packet in FIFO. Workaround * @three_stage_setup: set if we perform a three phase setup @@ -1079,6 +1081,11 @@ struct dwc3_scratchpad_array { * @dis_split_quirk: set to disable split boundary. * @imod_interval: set the interrupt moderation interval in 250ns * increments or 0 to disable. + * @max_cfg_eps: current max number of IN eps used across all USB configs. + * @last_fifo_depth: last fifo depth used to determine next fifo ram start + * address. + * @num_ep_resized: carries the current number endpoints which have had its tx + * fifo resized. */ struct dwc3 { struct work_struct drd_work; @@ -1233,6 +1240,7 @@ struct dwc3 { u8 rx_max_burst_prd; u8 tx_thr_num_pkt_prd; u8 tx_max_burst_prd; + u8 tx_fifo_resize_max_num; const char *hsphy_interface; @@ -1246,6 +1254,7 @@ struct dwc3 { unsigned is_utmi_l1_suspend:1; unsigned is_fpga:1; unsigned pending_events:1; + unsigned do_fifo_resize:1; unsigned pullups_connected:1; unsigned setup_packet_pending:1; unsigned three_stage_setup:1; @@ -1282,6 +1291,10 @@ struct dwc3 { unsigned async_callbacks:1; u16 imod_interval; + + int max_cfg_eps; + int last_fifo_depth; + int num_ep_resized; }; #define INCRX_BURST_MODE 0 @@ -1513,6 +1526,7 @@ int dwc3_send_gadget_ep_cmd(struct dwc3_ep *dep, unsigned int cmd, struct dwc3_gadget_ep_cmd_params *params); int dwc3_send_gadget_generic_command(struct dwc3 *dwc, unsigned int cmd, u32 param); +void dwc3_gadget_clear_tx_fifos(struct dwc3 *dwc); #else static inline int dwc3_gadget_init(struct dwc3 *dwc) { return 0; } @@ -1532,6 +1546,8 @@ static inline int dwc3_send_gadget_ep_cmd(struct dwc3_ep *dep, unsigned int cmd, static inline int dwc3_send_gadget_generic_command(struct dwc3 *dwc, int cmd, u32 param) { return 0; } +static inline void dwc3_gadget_clear_tx_fifos(struct dwc3 *dwc) +{ } #endif #if IS_ENABLED(CONFIG_USB_DWC3_DUAL_ROLE) diff --git a/drivers/usb/dwc3/dwc3-qcom.c b/drivers/usb/dwc3/dwc3-qcom.c index 49e6ca94486d..25cd123e441a 100644 --- a/drivers/usb/dwc3/dwc3-qcom.c +++ b/drivers/usb/dwc3/dwc3-qcom.c @@ -115,7 +115,7 @@ static inline void dwc3_qcom_clrbits(void __iomem *base, u32 offset, u32 val) readl(base + offset); } -static void dwc3_qcom_vbus_overrride_enable(struct dwc3_qcom *qcom, bool enable) +static void dwc3_qcom_vbus_override_enable(struct dwc3_qcom *qcom, bool enable) { if (enable) { dwc3_qcom_setbits(qcom->qscratch_base, QSCRATCH_SS_PHY_CTRL, @@ -136,7 +136,7 @@ static int dwc3_qcom_vbus_notifier(struct notifier_block *nb, struct dwc3_qcom *qcom = container_of(nb, struct dwc3_qcom, vbus_nb); /* enable vbus override for device mode */ - dwc3_qcom_vbus_overrride_enable(qcom, event); + dwc3_qcom_vbus_override_enable(qcom, event); qcom->mode = event ? USB_DR_MODE_PERIPHERAL : USB_DR_MODE_HOST; return NOTIFY_DONE; @@ -148,7 +148,7 @@ static int dwc3_qcom_host_notifier(struct notifier_block *nb, struct dwc3_qcom *qcom = container_of(nb, struct dwc3_qcom, host_nb); /* disable vbus override in host mode */ - dwc3_qcom_vbus_overrride_enable(qcom, !event); + dwc3_qcom_vbus_override_enable(qcom, !event); qcom->mode = event ? USB_DR_MODE_HOST : USB_DR_MODE_PERIPHERAL; return NOTIFY_DONE; @@ -645,6 +645,7 @@ static int dwc3_qcom_of_register_core(struct platform_device *pdev) struct dwc3_qcom *qcom = platform_get_drvdata(pdev); struct device_node *np = pdev->dev.of_node, *dwc3_np; struct device *dev = &pdev->dev; + struct property *prop; int ret; dwc3_np = of_get_compatible_child(np, "snps,dwc3"); @@ -653,6 +654,20 @@ static int dwc3_qcom_of_register_core(struct platform_device *pdev) return -ENODEV; } + prop = devm_kzalloc(dev, sizeof(*prop), GFP_KERNEL); + if (!prop) { + ret = -ENOMEM; + dev_err(dev, "unable to allocate memory for property\n"); + goto node_put; + } + + prop->name = "tx-fifo-resize"; + ret = of_add_property(dwc3_np, prop); + if (ret) { + dev_err(dev, "unable to add property\n"); + goto node_put; + } + ret = of_platform_populate(np, NULL, NULL, dev); if (ret) { dev_err(dev, "failed to register dwc3 core - %d\n", ret); @@ -811,7 +826,7 @@ static int dwc3_qcom_probe(struct platform_device *pdev) /* enable vbus override for device mode */ if (qcom->mode == USB_DR_MODE_PERIPHERAL) - dwc3_qcom_vbus_overrride_enable(qcom, true); + dwc3_qcom_vbus_override_enable(qcom, true); /* register extcon to override sw_vbus on Vbus change later */ ret = dwc3_qcom_register_extcon(qcom); diff --git a/drivers/usb/dwc3/ep0.c b/drivers/usb/dwc3/ep0.c index 2f9e45eed228..658739410992 100644 --- a/drivers/usb/dwc3/ep0.c +++ b/drivers/usb/dwc3/ep0.c @@ -621,6 +621,8 @@ static int dwc3_ep0_set_config(struct dwc3 *dwc, struct usb_ctrlrequest *ctrl) return -EINVAL; case USB_STATE_ADDRESS: + dwc3_gadget_clear_tx_fifos(dwc); + ret = dwc3_ep0_delegate_req(dwc, ctrl); /* if the cfg matches and the cfg is non zero */ if (cfg && (!ret || (ret == USB_GADGET_DELAYED_STATUS))) { diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c index 45f2bc0807e8..fb5a09ffebb0 100644 --- a/drivers/usb/dwc3/gadget.c +++ b/drivers/usb/dwc3/gadget.c @@ -632,6 +632,187 @@ static void dwc3_stop_active_transfer(struct dwc3_ep *dep, bool force, bool interrupt); /** + * dwc3_gadget_calc_tx_fifo_size - calculates the txfifo size value + * @dwc: pointer to the DWC3 context + * @nfifos: number of fifos to calculate for + * + * Calculates the size value based on the equation below: + * + * DWC3 revision 280A and prior: + * fifo_size = mult * (max_packet / mdwidth) + 1; + * + * DWC3 revision 290A and onwards: + * fifo_size = mult * ((max_packet + mdwidth)/mdwidth + 1) + 1 + * + * The max packet size is set to 1024, as the txfifo requirements mainly apply + * to super speed USB use cases. However, it is safe to overestimate the fifo + * allocations for other scenarios, i.e. high speed USB. + */ +static int dwc3_gadget_calc_tx_fifo_size(struct dwc3 *dwc, int mult) +{ + int max_packet = 1024; + int fifo_size; + int mdwidth; + + mdwidth = dwc3_mdwidth(dwc); + + /* MDWIDTH is represented in bits, we need it in bytes */ + mdwidth >>= 3; + + if (DWC3_VER_IS_PRIOR(DWC3, 290A)) + fifo_size = mult * (max_packet / mdwidth) + 1; + else + fifo_size = mult * ((max_packet + mdwidth) / mdwidth) + 1; + return fifo_size; +} + +/** + * dwc3_gadget_clear_tx_fifo_size - Clears txfifo allocation + * @dwc: pointer to the DWC3 context + * + * Iterates through all the endpoint registers and clears the previous txfifo + * allocations. + */ +void dwc3_gadget_clear_tx_fifos(struct dwc3 *dwc) +{ + struct dwc3_ep *dep; + int fifo_depth; + int size; + int num; + + if (!dwc->do_fifo_resize) + return; + + /* Read ep0IN related TXFIFO size */ + dep = dwc->eps[1]; + size = dwc3_readl(dwc->regs, DWC3_GTXFIFOSIZ(0)); + if (DWC3_IP_IS(DWC3)) + fifo_depth = DWC3_GTXFIFOSIZ_TXFDEP(size); + else + fifo_depth = DWC31_GTXFIFOSIZ_TXFDEP(size); + + dwc->last_fifo_depth = fifo_depth; + /* Clear existing TXFIFO for all IN eps except ep0 */ + for (num = 3; num < min_t(int, dwc->num_eps, DWC3_ENDPOINTS_NUM); + num += 2) { + dep = dwc->eps[num]; + /* Don't change TXFRAMNUM on usb31 version */ + size = DWC3_IP_IS(DWC3) ? 0 : + dwc3_readl(dwc->regs, DWC3_GTXFIFOSIZ(num >> 1)) & + DWC31_GTXFIFOSIZ_TXFRAMNUM; + + dwc3_writel(dwc->regs, DWC3_GTXFIFOSIZ(num >> 1), size); + } + dwc->num_ep_resized = 0; +} + +/* + * dwc3_gadget_resize_tx_fifos - reallocate fifo spaces for current use-case + * @dwc: pointer to our context structure + * + * This function will a best effort FIFO allocation in order + * to improve FIFO usage and throughput, while still allowing + * us to enable as many endpoints as possible. + * + * Keep in mind that this operation will be highly dependent + * on the configured size for RAM1 - which contains TxFifo -, + * the amount of endpoints enabled on coreConsultant tool, and + * the width of the Master Bus. + * + * In general, FIFO depths are represented with the following equation: + * + * fifo_size = mult * ((max_packet + mdwidth)/mdwidth + 1) + 1 + * + * In conjunction with dwc3_gadget_check_config(), this resizing logic will + * ensure that all endpoints will have enough internal memory for one max + * packet per endpoint. + */ +static int dwc3_gadget_resize_tx_fifos(struct dwc3_ep *dep) +{ + struct dwc3 *dwc = dep->dwc; + int fifo_0_start; + int ram1_depth; + int fifo_size; + int min_depth; + int num_in_ep; + int remaining; + int num_fifos = 1; + int fifo; + int tmp; + + if (!dwc->do_fifo_resize) + return 0; + + /* resize IN endpoints except ep0 */ + if (!usb_endpoint_dir_in(dep->endpoint.desc) || dep->number <= 1) + return 0; + + ram1_depth = DWC3_RAM1_DEPTH(dwc->hwparams.hwparams7); + + if ((dep->endpoint.maxburst > 1 && + usb_endpoint_xfer_bulk(dep->endpoint.desc)) || + usb_endpoint_xfer_isoc(dep->endpoint.desc)) + num_fifos = 3; + + if (dep->endpoint.maxburst > 6 && + usb_endpoint_xfer_bulk(dep->endpoint.desc) && DWC3_IP_IS(DWC31)) + num_fifos = dwc->tx_fifo_resize_max_num; + + /* FIFO size for a single buffer */ + fifo = dwc3_gadget_calc_tx_fifo_size(dwc, 1); + + /* Calculate the number of remaining EPs w/o any FIFO */ + num_in_ep = dwc->max_cfg_eps; + num_in_ep -= dwc->num_ep_resized; + + /* Reserve at least one FIFO for the number of IN EPs */ + min_depth = num_in_ep * (fifo + 1); + remaining = ram1_depth - min_depth - dwc->last_fifo_depth; + remaining = max_t(int, 0, remaining); + /* + * We've already reserved 1 FIFO per EP, so check what we can fit in + * addition to it. If there is not enough remaining space, allocate + * all the remaining space to the EP. + */ + fifo_size = (num_fifos - 1) * fifo; + if (remaining < fifo_size) + fifo_size = remaining; + + fifo_size += fifo; + /* Last increment according to the TX FIFO size equation */ + fifo_size++; + + /* Check if TXFIFOs start at non-zero addr */ + tmp = dwc3_readl(dwc->regs, DWC3_GTXFIFOSIZ(0)); + fifo_0_start = DWC3_GTXFIFOSIZ_TXFSTADDR(tmp); + + fifo_size |= (fifo_0_start + (dwc->last_fifo_depth << 16)); + if (DWC3_IP_IS(DWC3)) + dwc->last_fifo_depth += DWC3_GTXFIFOSIZ_TXFDEP(fifo_size); + else + dwc->last_fifo_depth += DWC31_GTXFIFOSIZ_TXFDEP(fifo_size); + + /* Check fifo size allocation doesn't exceed available RAM size. */ + if (dwc->last_fifo_depth >= ram1_depth) { + dev_err(dwc->dev, "Fifosize(%d) > RAM size(%d) %s depth:%d\n", + dwc->last_fifo_depth, ram1_depth, + dep->endpoint.name, fifo_size); + if (DWC3_IP_IS(DWC3)) + fifo_size = DWC3_GTXFIFOSIZ_TXFDEP(fifo_size); + else + fifo_size = DWC31_GTXFIFOSIZ_TXFDEP(fifo_size); + + dwc->last_fifo_depth -= fifo_size; + return -ENOMEM; + } + + dwc3_writel(dwc->regs, DWC3_GTXFIFOSIZ(dep->number >> 1), fifo_size); + dwc->num_ep_resized++; + + return 0; +} + +/** * __dwc3_gadget_ep_enable - initializes a hw endpoint * @dep: endpoint to be initialized * @action: one of INIT, MODIFY or RESTORE @@ -648,6 +829,10 @@ static int __dwc3_gadget_ep_enable(struct dwc3_ep *dep, unsigned int action) int ret; if (!(dep->flags & DWC3_EP_ENABLED)) { + ret = dwc3_gadget_resize_tx_fifos(dep); + if (ret) + return ret; + ret = dwc3_gadget_start_config(dep); if (ret) return ret; @@ -2498,6 +2683,7 @@ static int dwc3_gadget_stop(struct usb_gadget *g) spin_lock_irqsave(&dwc->lock, flags); dwc->gadget_driver = NULL; + dwc->max_cfg_eps = 0; spin_unlock_irqrestore(&dwc->lock, flags); free_irq(dwc->irq_gadget, dwc->ev_buf); @@ -2585,6 +2771,51 @@ static int dwc3_gadget_vbus_draw(struct usb_gadget *g, unsigned int mA) return ret; } +/** + * dwc3_gadget_check_config - ensure dwc3 can support the USB configuration + * @g: pointer to the USB gadget + * + * Used to record the maximum number of endpoints being used in a USB composite + * device. (across all configurations) This is to be used in the calculation + * of the TXFIFO sizes when resizing internal memory for individual endpoints. + * It will help ensured that the resizing logic reserves enough space for at + * least one max packet. + */ +static int dwc3_gadget_check_config(struct usb_gadget *g) +{ + struct dwc3 *dwc = gadget_to_dwc(g); + struct usb_ep *ep; + int fifo_size = 0; + int ram1_depth; + int ep_num = 0; + + if (!dwc->do_fifo_resize) + return 0; + + list_for_each_entry(ep, &g->ep_list, ep_list) { + /* Only interested in the IN endpoints */ + if (ep->claimed && (ep->address & USB_DIR_IN)) + ep_num++; + } + + if (ep_num <= dwc->max_cfg_eps) + return 0; + + /* Update the max number of eps in the composition */ + dwc->max_cfg_eps = ep_num; + + fifo_size = dwc3_gadget_calc_tx_fifo_size(dwc, dwc->max_cfg_eps); + /* Based on the equation, increment by one for every ep */ + fifo_size += dwc->max_cfg_eps; + + /* Check if we can fit a single fifo per endpoint */ + ram1_depth = DWC3_RAM1_DEPTH(dwc->hwparams.hwparams7); + if (fifo_size > ram1_depth) + return -ENOMEM; + + return 0; +} + static void dwc3_gadget_async_callbacks(struct usb_gadget *g, bool enable) { struct dwc3 *dwc = gadget_to_dwc(g); @@ -2606,6 +2837,7 @@ static const struct usb_gadget_ops dwc3_gadget_ops = { .udc_set_ssp_rate = dwc3_gadget_set_ssp_rate, .get_config_params = dwc3_gadget_config_params, .vbus_draw = dwc3_gadget_vbus_draw, + .check_config = dwc3_gadget_check_config, .udc_async_callbacks = dwc3_gadget_async_callbacks, }; diff --git a/drivers/usb/gadget/composite.c b/drivers/usb/gadget/composite.c index 72a9797dbbae..504c1cbc255d 100644 --- a/drivers/usb/gadget/composite.c +++ b/drivers/usb/gadget/composite.c @@ -482,7 +482,7 @@ static u8 encode_bMaxPower(enum usb_device_speed speed, { unsigned val; - if (c->MaxPower) + if (c->MaxPower || (c->bmAttributes & USB_CONFIG_ATT_SELFPOWER)) val = c->MaxPower; else val = CONFIG_USB_GADGET_VBUS_DRAW; @@ -936,7 +936,11 @@ static int set_config(struct usb_composite_dev *cdev, } /* when we return, be sure our power usage is valid */ - power = c->MaxPower ? c->MaxPower : CONFIG_USB_GADGET_VBUS_DRAW; + if (c->MaxPower || (c->bmAttributes & USB_CONFIG_ATT_SELFPOWER)) + power = c->MaxPower; + else + power = CONFIG_USB_GADGET_VBUS_DRAW; + if (gadget->speed < USB_SPEED_SUPER) power = min(power, 500U); else diff --git a/drivers/usb/gadget/configfs.c b/drivers/usb/gadget/configfs.c index 15a607ccef8a..f4c7c8241fe2 100644 --- a/drivers/usb/gadget/configfs.c +++ b/drivers/usb/gadget/configfs.c @@ -1404,6 +1404,10 @@ static int configfs_composite_bind(struct usb_gadget *gadget, goto err_purge_funcs; } } + ret = usb_gadget_check_config(cdev->gadget); + if (ret) + goto err_purge_funcs; + usb_ep_autoconfig_reset(cdev->gadget); } if (cdev->use_os_string) { diff --git a/drivers/usb/gadget/function/f_ncm.c b/drivers/usb/gadget/function/f_ncm.c index 855127249f24..dc8f078f918c 100644 --- a/drivers/usb/gadget/function/f_ncm.c +++ b/drivers/usb/gadget/function/f_ncm.c @@ -72,9 +72,7 @@ struct f_ncm { struct sk_buff *skb_tx_data; struct sk_buff *skb_tx_ndp; u16 ndp_dgram_count; - bool timer_force_tx; struct hrtimer task_timer; - bool timer_stopping; }; static inline struct f_ncm *func_to_ncm(struct usb_function *f) @@ -890,7 +888,6 @@ static int ncm_set_alt(struct usb_function *f, unsigned intf, unsigned alt) if (ncm->port.in_ep->enabled) { DBG(cdev, "reset ncm\n"); - ncm->timer_stopping = true; ncm->netdev = NULL; gether_disconnect(&ncm->port); ncm_reset_values(ncm); @@ -928,7 +925,6 @@ static int ncm_set_alt(struct usb_function *f, unsigned intf, unsigned alt) if (IS_ERR(net)) return PTR_ERR(net); ncm->netdev = net; - ncm->timer_stopping = false; } spin_lock(&ncm->lock); @@ -1017,22 +1013,20 @@ static struct sk_buff *ncm_wrap_ntb(struct gether *port, { struct f_ncm *ncm = func_to_ncm(&port->func); struct sk_buff *skb2 = NULL; - int ncb_len = 0; - __le16 *ntb_data; - __le16 *ntb_ndp; - int dgram_pad; - - unsigned max_size = ncm->port.fixed_in_len; - const struct ndp_parser_opts *opts = ncm->parser_opts; - const int ndp_align = le16_to_cpu(ntb_parameters.wNdpInAlignment); - const int div = le16_to_cpu(ntb_parameters.wNdpInDivisor); - const int rem = le16_to_cpu(ntb_parameters.wNdpInPayloadRemainder); - const int dgram_idx_len = 2 * 2 * opts->dgram_item_len; - - if (!skb && !ncm->skb_tx_data) - return NULL; if (skb) { + int ncb_len = 0; + __le16 *ntb_data; + __le16 *ntb_ndp; + int dgram_pad; + + unsigned max_size = ncm->port.fixed_in_len; + const struct ndp_parser_opts *opts = ncm->parser_opts; + const int ndp_align = le16_to_cpu(ntb_parameters.wNdpInAlignment); + const int div = le16_to_cpu(ntb_parameters.wNdpInDivisor); + const int rem = le16_to_cpu(ntb_parameters.wNdpInPayloadRemainder); + const int dgram_idx_len = 2 * 2 * opts->dgram_item_len; + /* Add the CRC if required up front */ if (ncm->is_crc) { uint32_t crc; @@ -1126,8 +1120,11 @@ static struct sk_buff *ncm_wrap_ntb(struct gether *port, dev_consume_skb_any(skb); skb = NULL; - } else if (ncm->skb_tx_data && ncm->timer_force_tx) { - /* If the tx was requested because of a timeout then send */ + } else if (ncm->skb_tx_data) { + /* If we get here ncm_wrap_ntb() was called with NULL skb, + * because eth_start_xmit() was called with NULL skb by + * ncm_tx_timeout() - hence, this is our signal to flush/send. + */ skb2 = package_for_tx(ncm); if (!skb2) goto err; @@ -1155,20 +1152,18 @@ err: static enum hrtimer_restart ncm_tx_timeout(struct hrtimer *data) { struct f_ncm *ncm = container_of(data, struct f_ncm, task_timer); + struct net_device *netdev = READ_ONCE(ncm->netdev); - /* Only send if data is available. */ - if (!ncm->timer_stopping && ncm->skb_tx_data) { - ncm->timer_force_tx = true; - + if (netdev) { /* XXX This allowance of a NULL skb argument to ndo_start_xmit * XXX is not sane. The gadget layer should be redesigned so * XXX that the dev->wrap() invocations to build SKBs is transparent * XXX and performed in some way outside of the ndo_start_xmit * XXX interface. + * + * This will call directly into u_ether's eth_start_xmit() */ - ncm->netdev->netdev_ops->ndo_start_xmit(NULL, ncm->netdev); - - ncm->timer_force_tx = false; + netdev->netdev_ops->ndo_start_xmit(NULL, netdev); } return HRTIMER_NORESTART; } @@ -1357,7 +1352,6 @@ static void ncm_disable(struct usb_function *f) DBG(cdev, "ncm deactivated\n"); if (ncm->port.in_ep->enabled) { - ncm->timer_stopping = true; ncm->netdev = NULL; gether_disconnect(&ncm->port); } diff --git a/drivers/usb/gadget/function/f_uac1.c b/drivers/usb/gadget/function/f_uac1.c index d04707580068..3b3db1a8df75 100644 --- a/drivers/usb/gadget/function/f_uac1.c +++ b/drivers/usb/gadget/function/f_uac1.c @@ -22,13 +22,26 @@ /* UAC1 spec: 3.7.2.3 Audio Channel Cluster Format */ #define UAC1_CHANNEL_MASK 0x0FFF +#define USB_OUT_FU_ID (out_feature_unit_desc->bUnitID) +#define USB_IN_FU_ID (in_feature_unit_desc->bUnitID) + #define EPIN_EN(_opts) ((_opts)->p_chmask != 0) #define EPOUT_EN(_opts) ((_opts)->c_chmask != 0) +#define FUIN_EN(_opts) ((_opts)->p_mute_present \ + || (_opts)->p_volume_present) +#define FUOUT_EN(_opts) ((_opts)->c_mute_present \ + || (_opts)->c_volume_present) struct f_uac1 { struct g_audio g_audio; u8 ac_intf, as_in_intf, as_out_intf; u8 ac_alt, as_in_alt, as_out_alt; /* needed for get_alt() */ + + struct usb_ctrlrequest setup_cr; /* will be used in data stage */ + + /* Interrupt IN endpoint of AC interface */ + struct usb_ep *int_ep; + atomic_t int_count; }; static inline struct f_uac1 *func_to_uac1(struct usb_function *f) @@ -58,7 +71,7 @@ static inline struct f_uac1_opts *g_audio_to_uac1_opts(struct g_audio *audio) static struct usb_interface_descriptor ac_interface_desc = { .bLength = USB_DT_INTERFACE_SIZE, .bDescriptorType = USB_DT_INTERFACE, - .bNumEndpoints = 0, + /* .bNumEndpoints = DYNAMIC */ .bInterfaceClass = USB_CLASS_AUDIO, .bInterfaceSubClass = USB_SUBCLASS_AUDIOCONTROL, }; @@ -106,6 +119,19 @@ static struct uac1_output_terminal_descriptor usb_in_ot_desc = { /* .bSourceID = DYNAMIC */ }; +static struct uac_feature_unit_descriptor *in_feature_unit_desc; +static struct uac_feature_unit_descriptor *out_feature_unit_desc; + +/* AC IN Interrupt Endpoint */ +static struct usb_endpoint_descriptor ac_int_ep_desc = { + .bLength = USB_DT_ENDPOINT_SIZE, + .bDescriptorType = USB_DT_ENDPOINT, + .bEndpointAddress = USB_DIR_IN, + .bmAttributes = USB_ENDPOINT_XFER_INT, + .wMaxPacketSize = cpu_to_le16(2), + .bInterval = 4, +}; + /* B.4.1 Standard AS Interface Descriptor */ static struct usb_interface_descriptor as_out_interface_alt_0_desc = { .bLength = USB_DT_INTERFACE_SIZE, @@ -232,8 +258,13 @@ static struct usb_descriptor_header *f_audio_desc[] = { (struct usb_descriptor_header *)&usb_out_it_desc, (struct usb_descriptor_header *)&io_out_ot_desc, + (struct usb_descriptor_header *)&out_feature_unit_desc, + (struct usb_descriptor_header *)&io_in_it_desc, (struct usb_descriptor_header *)&usb_in_ot_desc, + (struct usb_descriptor_header *)&in_feature_unit_desc, + + (struct usb_descriptor_header *)&ac_int_ep_desc, (struct usb_descriptor_header *)&as_out_interface_alt_0_desc, (struct usb_descriptor_header *)&as_out_interface_alt_1_desc, @@ -263,6 +294,8 @@ enum { STR_IO_IN_IT, STR_IO_IN_IT_CH_NAMES, STR_USB_IN_OT, + STR_FU_IN, + STR_FU_OUT, STR_AS_OUT_IF_ALT0, STR_AS_OUT_IF_ALT1, STR_AS_IN_IF_ALT0, @@ -277,6 +310,8 @@ static struct usb_string strings_uac1[] = { [STR_IO_IN_IT].s = "Capture Input terminal", [STR_IO_IN_IT_CH_NAMES].s = "Capture Channels", [STR_USB_IN_OT].s = "Capture Output terminal", + [STR_FU_IN].s = "Capture Volume", + [STR_FU_OUT].s = "Playback Volume", [STR_AS_OUT_IF_ALT0].s = "Playback Inactive", [STR_AS_OUT_IF_ALT1].s = "Playback Active", [STR_AS_IN_IF_ALT0].s = "Capture Inactive", @@ -298,6 +333,376 @@ static struct usb_gadget_strings *uac1_strings[] = { * This function is an ALSA sound card following USB Audio Class Spec 1.0. */ +static void audio_notify_complete(struct usb_ep *_ep, struct usb_request *req) +{ + struct g_audio *audio = req->context; + struct f_uac1 *uac1 = func_to_uac1(&audio->func); + + atomic_dec(&uac1->int_count); + kfree(req->buf); + usb_ep_free_request(_ep, req); +} + +static int audio_notify(struct g_audio *audio, int unit_id, int cs) +{ + struct f_uac1 *uac1 = func_to_uac1(&audio->func); + struct usb_request *req; + struct uac1_status_word *msg; + int ret; + + if (!uac1->int_ep->enabled) + return 0; + + if (atomic_inc_return(&uac1->int_count) > UAC1_DEF_INT_REQ_NUM) { + atomic_dec(&uac1->int_count); + return 0; + } + + req = usb_ep_alloc_request(uac1->int_ep, GFP_ATOMIC); + if (req == NULL) { + ret = -ENOMEM; + goto err_dec_int_count; + } + + msg = kmalloc(sizeof(*msg), GFP_ATOMIC); + if (msg == NULL) { + ret = -ENOMEM; + goto err_free_request; + } + + msg->bStatusType = UAC1_STATUS_TYPE_IRQ_PENDING + | UAC1_STATUS_TYPE_ORIG_AUDIO_CONTROL_IF; + msg->bOriginator = unit_id; + + req->length = sizeof(*msg); + req->buf = msg; + req->context = audio; + req->complete = audio_notify_complete; + + ret = usb_ep_queue(uac1->int_ep, req, GFP_ATOMIC); + + if (ret) + goto err_free_msg; + + return 0; + +err_free_msg: + kfree(msg); +err_free_request: + usb_ep_free_request(uac1->int_ep, req); +err_dec_int_count: + atomic_dec(&uac1->int_count); + + return ret; +} + +static int +in_rq_cur(struct usb_function *fn, const struct usb_ctrlrequest *cr) +{ + struct usb_request *req = fn->config->cdev->req; + struct g_audio *audio = func_to_g_audio(fn); + struct f_uac1_opts *opts = g_audio_to_uac1_opts(audio); + u16 w_length = le16_to_cpu(cr->wLength); + u16 w_index = le16_to_cpu(cr->wIndex); + u16 w_value = le16_to_cpu(cr->wValue); + u8 entity_id = (w_index >> 8) & 0xff; + u8 control_selector = w_value >> 8; + int value = -EOPNOTSUPP; + + if ((FUIN_EN(opts) && (entity_id == USB_IN_FU_ID)) || + (FUOUT_EN(opts) && (entity_id == USB_OUT_FU_ID))) { + unsigned int is_playback = 0; + + if (FUIN_EN(opts) && (entity_id == USB_IN_FU_ID)) + is_playback = 1; + + if (control_selector == UAC_FU_MUTE) { + unsigned int mute; + + u_audio_get_mute(audio, is_playback, &mute); + + *(u8 *)req->buf = mute; + value = min_t(unsigned int, w_length, 1); + } else if (control_selector == UAC_FU_VOLUME) { + __le16 c; + s16 volume; + + u_audio_get_volume(audio, is_playback, &volume); + + c = cpu_to_le16(volume); + + value = min_t(unsigned int, w_length, sizeof(c)); + memcpy(req->buf, &c, value); + } else { + dev_err(&audio->gadget->dev, + "%s:%d control_selector=%d TODO!\n", + __func__, __LINE__, control_selector); + } + } else { + dev_err(&audio->gadget->dev, + "%s:%d entity_id=%d control_selector=%d TODO!\n", + __func__, __LINE__, entity_id, control_selector); + } + + return value; +} + +static int +in_rq_min(struct usb_function *fn, const struct usb_ctrlrequest *cr) +{ + struct usb_request *req = fn->config->cdev->req; + struct g_audio *audio = func_to_g_audio(fn); + struct f_uac1_opts *opts = g_audio_to_uac1_opts(audio); + u16 w_length = le16_to_cpu(cr->wLength); + u16 w_index = le16_to_cpu(cr->wIndex); + u16 w_value = le16_to_cpu(cr->wValue); + u8 entity_id = (w_index >> 8) & 0xff; + u8 control_selector = w_value >> 8; + int value = -EOPNOTSUPP; + + if ((FUIN_EN(opts) && (entity_id == USB_IN_FU_ID)) || + (FUOUT_EN(opts) && (entity_id == USB_OUT_FU_ID))) { + unsigned int is_playback = 0; + + if (FUIN_EN(opts) && (entity_id == USB_IN_FU_ID)) + is_playback = 1; + + if (control_selector == UAC_FU_VOLUME) { + __le16 r; + s16 min_db; + + if (is_playback) + min_db = opts->p_volume_min; + else + min_db = opts->c_volume_min; + + r = cpu_to_le16(min_db); + + value = min_t(unsigned int, w_length, sizeof(r)); + memcpy(req->buf, &r, value); + } else { + dev_err(&audio->gadget->dev, + "%s:%d control_selector=%d TODO!\n", + __func__, __LINE__, control_selector); + } + } else { + dev_err(&audio->gadget->dev, + "%s:%d entity_id=%d control_selector=%d TODO!\n", + __func__, __LINE__, entity_id, control_selector); + } + + return value; +} + +static int +in_rq_max(struct usb_function *fn, const struct usb_ctrlrequest *cr) +{ + struct usb_request *req = fn->config->cdev->req; + struct g_audio *audio = func_to_g_audio(fn); + struct f_uac1_opts *opts = g_audio_to_uac1_opts(audio); + u16 w_length = le16_to_cpu(cr->wLength); + u16 w_index = le16_to_cpu(cr->wIndex); + u16 w_value = le16_to_cpu(cr->wValue); + u8 entity_id = (w_index >> 8) & 0xff; + u8 control_selector = w_value >> 8; + int value = -EOPNOTSUPP; + + if ((FUIN_EN(opts) && (entity_id == USB_IN_FU_ID)) || + (FUOUT_EN(opts) && (entity_id == USB_OUT_FU_ID))) { + unsigned int is_playback = 0; + + if (FUIN_EN(opts) && (entity_id == USB_IN_FU_ID)) + is_playback = 1; + + if (control_selector == UAC_FU_VOLUME) { + __le16 r; + s16 max_db; + + if (is_playback) + max_db = opts->p_volume_max; + else + max_db = opts->c_volume_max; + + r = cpu_to_le16(max_db); + + value = min_t(unsigned int, w_length, sizeof(r)); + memcpy(req->buf, &r, value); + } else { + dev_err(&audio->gadget->dev, + "%s:%d control_selector=%d TODO!\n", + __func__, __LINE__, control_selector); + } + } else { + dev_err(&audio->gadget->dev, + "%s:%d entity_id=%d control_selector=%d TODO!\n", + __func__, __LINE__, entity_id, control_selector); + } + + return value; +} + +static int +in_rq_res(struct usb_function *fn, const struct usb_ctrlrequest *cr) +{ + struct usb_request *req = fn->config->cdev->req; + struct g_audio *audio = func_to_g_audio(fn); + struct f_uac1_opts *opts = g_audio_to_uac1_opts(audio); + u16 w_length = le16_to_cpu(cr->wLength); + u16 w_index = le16_to_cpu(cr->wIndex); + u16 w_value = le16_to_cpu(cr->wValue); + u8 entity_id = (w_index >> 8) & 0xff; + u8 control_selector = w_value >> 8; + int value = -EOPNOTSUPP; + + if ((FUIN_EN(opts) && (entity_id == USB_IN_FU_ID)) || + (FUOUT_EN(opts) && (entity_id == USB_OUT_FU_ID))) { + unsigned int is_playback = 0; + + if (FUIN_EN(opts) && (entity_id == USB_IN_FU_ID)) + is_playback = 1; + + if (control_selector == UAC_FU_VOLUME) { + __le16 r; + s16 res_db; + + if (is_playback) + res_db = opts->p_volume_res; + else + res_db = opts->c_volume_res; + + r = cpu_to_le16(res_db); + + value = min_t(unsigned int, w_length, sizeof(r)); + memcpy(req->buf, &r, value); + } else { + dev_err(&audio->gadget->dev, + "%s:%d control_selector=%d TODO!\n", + __func__, __LINE__, control_selector); + } + } else { + dev_err(&audio->gadget->dev, + "%s:%d entity_id=%d control_selector=%d TODO!\n", + __func__, __LINE__, entity_id, control_selector); + } + + return value; +} + +static void +out_rq_cur_complete(struct usb_ep *ep, struct usb_request *req) +{ + struct g_audio *audio = req->context; + struct usb_composite_dev *cdev = audio->func.config->cdev; + struct f_uac1_opts *opts = g_audio_to_uac1_opts(audio); + struct f_uac1 *uac1 = func_to_uac1(&audio->func); + struct usb_ctrlrequest *cr = &uac1->setup_cr; + u16 w_index = le16_to_cpu(cr->wIndex); + u16 w_value = le16_to_cpu(cr->wValue); + u8 entity_id = (w_index >> 8) & 0xff; + u8 control_selector = w_value >> 8; + + if (req->status != 0) { + dev_dbg(&cdev->gadget->dev, "completion err %d\n", req->status); + return; + } + + if ((FUIN_EN(opts) && (entity_id == USB_IN_FU_ID)) || + (FUOUT_EN(opts) && (entity_id == USB_OUT_FU_ID))) { + unsigned int is_playback = 0; + + if (FUIN_EN(opts) && (entity_id == USB_IN_FU_ID)) + is_playback = 1; + + if (control_selector == UAC_FU_MUTE) { + u8 mute = *(u8 *)req->buf; + + u_audio_set_mute(audio, is_playback, mute); + + return; + } else if (control_selector == UAC_FU_VOLUME) { + __le16 *c = req->buf; + s16 volume; + + volume = le16_to_cpu(*c); + u_audio_set_volume(audio, is_playback, volume); + + return; + } else { + dev_err(&audio->gadget->dev, + "%s:%d control_selector=%d TODO!\n", + __func__, __LINE__, control_selector); + usb_ep_set_halt(ep); + } + } else { + dev_err(&audio->gadget->dev, + "%s:%d entity_id=%d control_selector=%d TODO!\n", + __func__, __LINE__, entity_id, control_selector); + usb_ep_set_halt(ep); + + } +} + +static int +out_rq_cur(struct usb_function *fn, const struct usb_ctrlrequest *cr) +{ + struct usb_request *req = fn->config->cdev->req; + struct g_audio *audio = func_to_g_audio(fn); + struct f_uac1_opts *opts = g_audio_to_uac1_opts(audio); + struct f_uac1 *uac1 = func_to_uac1(&audio->func); + u16 w_length = le16_to_cpu(cr->wLength); + u16 w_index = le16_to_cpu(cr->wIndex); + u16 w_value = le16_to_cpu(cr->wValue); + u8 entity_id = (w_index >> 8) & 0xff; + u8 control_selector = w_value >> 8; + + if ((FUIN_EN(opts) && (entity_id == USB_IN_FU_ID)) || + (FUOUT_EN(opts) && (entity_id == USB_OUT_FU_ID))) { + memcpy(&uac1->setup_cr, cr, sizeof(*cr)); + req->context = audio; + req->complete = out_rq_cur_complete; + + return w_length; + } else { + dev_err(&audio->gadget->dev, + "%s:%d entity_id=%d control_selector=%d TODO!\n", + __func__, __LINE__, entity_id, control_selector); + } + return -EOPNOTSUPP; +} + +static int ac_rq_in(struct usb_function *f, + const struct usb_ctrlrequest *ctrl) +{ + struct usb_composite_dev *cdev = f->config->cdev; + int value = -EOPNOTSUPP; + u8 ep = ((le16_to_cpu(ctrl->wIndex) >> 8) & 0xFF); + u16 len = le16_to_cpu(ctrl->wLength); + u16 w_value = le16_to_cpu(ctrl->wValue); + + DBG(cdev, "bRequest 0x%x, w_value 0x%04x, len %d, endpoint %d\n", + ctrl->bRequest, w_value, len, ep); + + switch (ctrl->bRequest) { + case UAC_GET_CUR: + return in_rq_cur(f, ctrl); + case UAC_GET_MIN: + return in_rq_min(f, ctrl); + case UAC_GET_MAX: + return in_rq_max(f, ctrl); + case UAC_GET_RES: + return in_rq_res(f, ctrl); + case UAC_GET_MEM: + break; + case UAC_GET_STAT: + value = len; + break; + default: + break; + } + + return value; +} + static int audio_set_endpoint_req(struct usb_function *f, const struct usb_ctrlrequest *ctrl) { @@ -383,7 +788,13 @@ f_audio_setup(struct usb_function *f, const struct usb_ctrlrequest *ctrl) case USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_ENDPOINT: value = audio_get_endpoint_req(f, ctrl); break; - + case USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE: + if (ctrl->bRequest == UAC_SET_CUR) + value = out_rq_cur(f, ctrl); + break; + case USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_INTERFACE: + value = ac_rq_in(f, ctrl); + break; default: ERROR(cdev, "invalid control req%02x.%02x v%04x i%04x l%d\n", ctrl->bRequestType, ctrl->bRequest, @@ -411,6 +822,7 @@ static int f_audio_set_alt(struct usb_function *f, unsigned intf, unsigned alt) struct usb_composite_dev *cdev = f->config->cdev; struct usb_gadget *gadget = cdev->gadget; struct device *dev = &gadget->dev; + struct g_audio *audio = func_to_g_audio(f); struct f_uac1 *uac1 = func_to_uac1(f); int ret = 0; @@ -426,6 +838,14 @@ static int f_audio_set_alt(struct usb_function *f, unsigned intf, unsigned alt) dev_err(dev, "%s:%d Error!\n", __func__, __LINE__); return -EINVAL; } + + /* restart interrupt endpoint */ + if (uac1->int_ep) { + usb_ep_disable(uac1->int_ep); + config_ep_by_speed(gadget, &audio->func, uac1->int_ep); + usb_ep_enable(uac1->int_ep); + } + return 0; } @@ -481,10 +901,33 @@ static void f_audio_disable(struct usb_function *f) u_audio_stop_playback(&uac1->g_audio); u_audio_stop_capture(&uac1->g_audio); + if (uac1->int_ep) + usb_ep_disable(uac1->int_ep); } /*-------------------------------------------------------------------------*/ +static struct uac_feature_unit_descriptor *build_fu_desc(int chmask) +{ + struct uac_feature_unit_descriptor *fu_desc; + int channels = num_channels(chmask); + int fu_desc_size = UAC_DT_FEATURE_UNIT_SIZE(channels); + + fu_desc = kzalloc(fu_desc_size, GFP_KERNEL); + if (!fu_desc) + return NULL; + + fu_desc->bLength = fu_desc_size; + fu_desc->bDescriptorType = USB_DT_CS_INTERFACE; + + fu_desc->bDescriptorSubtype = UAC_FEATURE_UNIT; + fu_desc->bControlSize = 2; + /* bUnitID, bSourceID and bmaControls will be defined later */ + + return fu_desc; +} + +/* B.3.2 Class-Specific AC Interface Descriptor */ static struct uac1_ac_header_descriptor *build_ac_header_desc(struct f_uac1_opts *opts) { @@ -530,9 +973,23 @@ static void setup_descriptor(struct f_uac1_opts *opts) io_out_ot_desc.bTerminalID = i++; if (EPIN_EN(opts)) usb_in_ot_desc.bTerminalID = i++; - - usb_in_ot_desc.bSourceID = io_in_it_desc.bTerminalID; - io_out_ot_desc.bSourceID = usb_out_it_desc.bTerminalID; + if (FUOUT_EN(opts)) + out_feature_unit_desc->bUnitID = i++; + if (FUIN_EN(opts)) + in_feature_unit_desc->bUnitID = i++; + + if (FUIN_EN(opts)) { + usb_in_ot_desc.bSourceID = in_feature_unit_desc->bUnitID; + in_feature_unit_desc->bSourceID = io_in_it_desc.bTerminalID; + } else { + usb_in_ot_desc.bSourceID = io_in_it_desc.bTerminalID; + } + if (FUOUT_EN(opts)) { + io_out_ot_desc.bSourceID = out_feature_unit_desc->bUnitID; + out_feature_unit_desc->bSourceID = usb_out_it_desc.bTerminalID; + } else { + io_out_ot_desc.bSourceID = usb_out_it_desc.bTerminalID; + } as_out_header_desc.bTerminalLink = usb_out_it_desc.bTerminalID; as_in_header_desc.bTerminalLink = usb_in_ot_desc.bTerminalID; @@ -544,6 +1001,8 @@ static void setup_descriptor(struct f_uac1_opts *opts) len += sizeof(usb_in_ot_desc); len += sizeof(io_in_it_desc); + if (FUIN_EN(opts)) + len += in_feature_unit_desc->bLength; ac_header_desc->wTotalLength = cpu_to_le16(len); } if (EPOUT_EN(opts)) { @@ -551,6 +1010,8 @@ static void setup_descriptor(struct f_uac1_opts *opts) len += sizeof(usb_out_it_desc); len += sizeof(io_out_ot_desc); + if (FUOUT_EN(opts)) + len += out_feature_unit_desc->bLength; ac_header_desc->wTotalLength = cpu_to_le16(len); } @@ -561,13 +1022,20 @@ static void setup_descriptor(struct f_uac1_opts *opts) if (EPOUT_EN(opts)) { f_audio_desc[i++] = USBDHDR(&usb_out_it_desc); f_audio_desc[i++] = USBDHDR(&io_out_ot_desc); + if (FUOUT_EN(opts)) + f_audio_desc[i++] = USBDHDR(out_feature_unit_desc); } if (EPIN_EN(opts)) { f_audio_desc[i++] = USBDHDR(&io_in_it_desc); f_audio_desc[i++] = USBDHDR(&usb_in_ot_desc); + if (FUIN_EN(opts)) + f_audio_desc[i++] = USBDHDR(in_feature_unit_desc); } + if (FUOUT_EN(opts) || FUIN_EN(opts)) + f_audio_desc[i++] = USBDHDR(&ac_int_ep_desc); + if (EPOUT_EN(opts)) { f_audio_desc[i++] = USBDHDR(&as_out_interface_alt_0_desc); f_audio_desc[i++] = USBDHDR(&as_out_interface_alt_1_desc); @@ -614,6 +1082,28 @@ static int f_audio_validate_opts(struct g_audio *audio, struct device *dev) return -EINVAL; } + if (opts->p_volume_max <= opts->p_volume_min) { + dev_err(dev, "Error: incorrect playback volume max/min\n"); + return -EINVAL; + } else if (opts->c_volume_max <= opts->c_volume_min) { + dev_err(dev, "Error: incorrect capture volume max/min\n"); + return -EINVAL; + } else if (opts->p_volume_res <= 0) { + dev_err(dev, "Error: negative/zero playback volume resolution\n"); + return -EINVAL; + } else if (opts->c_volume_res <= 0) { + dev_err(dev, "Error: negative/zero capture volume resolution\n"); + return -EINVAL; + } + + if ((opts->p_volume_max - opts->p_volume_min) % opts->p_volume_res) { + dev_err(dev, "Error: incorrect playback volume resolution\n"); + return -EINVAL; + } else if ((opts->c_volume_max - opts->c_volume_min) % opts->c_volume_res) { + dev_err(dev, "Error: incorrect capture volume resolution\n"); + return -EINVAL; + } + return 0; } @@ -647,6 +1137,21 @@ static int f_audio_bind(struct usb_configuration *c, struct usb_function *f) if (!ac_header_desc) return -ENOMEM; + if (FUOUT_EN(audio_opts)) { + out_feature_unit_desc = build_fu_desc(audio_opts->c_chmask); + if (!out_feature_unit_desc) { + status = -ENOMEM; + goto fail; + } + } + if (FUIN_EN(audio_opts)) { + in_feature_unit_desc = build_fu_desc(audio_opts->p_chmask); + if (!in_feature_unit_desc) { + status = -ENOMEM; + goto err_free_fu; + } + } + ac_interface_desc.iInterface = us[STR_AC_IF].id; usb_out_it_desc.iTerminal = us[STR_USB_OUT_IT].id; usb_out_it_desc.iChannelNames = us[STR_USB_OUT_IT_CH_NAMES].id; @@ -659,6 +1164,21 @@ static int f_audio_bind(struct usb_configuration *c, struct usb_function *f) as_in_interface_alt_0_desc.iInterface = us[STR_AS_IN_IF_ALT0].id; as_in_interface_alt_1_desc.iInterface = us[STR_AS_IN_IF_ALT1].id; + if (FUOUT_EN(audio_opts)) { + u8 *i_feature; + + i_feature = (u8 *)out_feature_unit_desc + + out_feature_unit_desc->bLength - 1; + *i_feature = us[STR_FU_OUT].id; + } + if (FUIN_EN(audio_opts)) { + u8 *i_feature; + + i_feature = (u8 *)in_feature_unit_desc + + in_feature_unit_desc->bLength - 1; + *i_feature = us[STR_FU_IN].id; + } + /* Set channel numbers */ usb_out_it_desc.bNrChannels = num_channels(audio_opts->c_chmask); usb_out_it_desc.wChannelConfig = cpu_to_le16(audio_opts->c_chmask); @@ -671,6 +1191,27 @@ static int f_audio_bind(struct usb_configuration *c, struct usb_function *f) as_in_type_i_desc.bSubframeSize = audio_opts->p_ssize; as_in_type_i_desc.bBitResolution = audio_opts->p_ssize * 8; + if (FUOUT_EN(audio_opts)) { + __le16 *bma = (__le16 *)&out_feature_unit_desc->bmaControls[0]; + u32 control = 0; + + if (audio_opts->c_mute_present) + control |= UAC_FU_MUTE; + if (audio_opts->c_volume_present) + control |= UAC_FU_VOLUME; + *bma = cpu_to_le16(control); + } + if (FUIN_EN(audio_opts)) { + __le16 *bma = (__le16 *)&in_feature_unit_desc->bmaControls[0]; + u32 control = 0; + + if (audio_opts->p_mute_present) + control |= UAC_FU_MUTE; + if (audio_opts->p_volume_present) + control |= UAC_FU_VOLUME; + *bma = cpu_to_le16(control); + } + /* Set sample rates */ rate = audio_opts->c_srate; sam_freq = as_out_type_i_desc.tSamFreq[0]; @@ -682,7 +1223,7 @@ static int f_audio_bind(struct usb_configuration *c, struct usb_function *f) /* allocate instance-specific interface IDs, and patch descriptors */ status = usb_interface_id(c, f); if (status < 0) - goto fail; + goto err_free_fu; ac_interface_desc.bInterfaceNumber = status; uac1->ac_intf = status; uac1->ac_alt = 0; @@ -692,7 +1233,7 @@ static int f_audio_bind(struct usb_configuration *c, struct usb_function *f) if (EPOUT_EN(audio_opts)) { status = usb_interface_id(c, f); if (status < 0) - goto fail; + goto err_free_fu; as_out_interface_alt_0_desc.bInterfaceNumber = status; as_out_interface_alt_1_desc.bInterfaceNumber = status; ac_header_desc->baInterfaceNr[ba_iface_id++] = status; @@ -703,7 +1244,7 @@ static int f_audio_bind(struct usb_configuration *c, struct usb_function *f) if (EPIN_EN(audio_opts)) { status = usb_interface_id(c, f); if (status < 0) - goto fail; + goto err_free_fu; as_in_interface_alt_0_desc.bInterfaceNumber = status; as_in_interface_alt_1_desc.bInterfaceNumber = status; ac_header_desc->baInterfaceNr[ba_iface_id++] = status; @@ -715,11 +1256,24 @@ static int f_audio_bind(struct usb_configuration *c, struct usb_function *f) status = -ENODEV; + ac_interface_desc.bNumEndpoints = 0; + + /* allocate AC interrupt endpoint */ + if (FUOUT_EN(audio_opts) || FUIN_EN(audio_opts)) { + ep = usb_ep_autoconfig(cdev->gadget, &ac_int_ep_desc); + if (!ep) + goto err_free_fu; + uac1->int_ep = ep; + uac1->int_ep->desc = &ac_int_ep_desc; + + ac_interface_desc.bNumEndpoints = 1; + } + /* allocate instance-specific endpoints */ if (EPOUT_EN(audio_opts)) { ep = usb_ep_autoconfig(cdev->gadget, &as_out_ep_desc); if (!ep) - goto fail; + goto err_free_fu; audio->out_ep = ep; audio->out_ep->desc = &as_out_ep_desc; } @@ -727,7 +1281,7 @@ static int f_audio_bind(struct usb_configuration *c, struct usb_function *f) if (EPIN_EN(audio_opts)) { ep = usb_ep_autoconfig(cdev->gadget, &as_in_ep_desc); if (!ep) - goto fail; + goto err_free_fu; audio->in_ep = ep; audio->in_ep->desc = &as_in_ep_desc; } @@ -738,17 +1292,37 @@ static int f_audio_bind(struct usb_configuration *c, struct usb_function *f) status = usb_assign_descriptors(f, f_audio_desc, f_audio_desc, NULL, NULL); if (status) - goto fail; + goto err_free_fu; audio->out_ep_maxpsize = le16_to_cpu(as_out_ep_desc.wMaxPacketSize); audio->in_ep_maxpsize = le16_to_cpu(as_in_ep_desc.wMaxPacketSize); audio->params.c_chmask = audio_opts->c_chmask; audio->params.c_srate = audio_opts->c_srate; audio->params.c_ssize = audio_opts->c_ssize; + if (FUIN_EN(audio_opts)) { + audio->params.p_fu.id = USB_IN_FU_ID; + audio->params.p_fu.mute_present = audio_opts->p_mute_present; + audio->params.p_fu.volume_present = + audio_opts->p_volume_present; + audio->params.p_fu.volume_min = audio_opts->p_volume_min; + audio->params.p_fu.volume_max = audio_opts->p_volume_max; + audio->params.p_fu.volume_res = audio_opts->p_volume_res; + } audio->params.p_chmask = audio_opts->p_chmask; audio->params.p_srate = audio_opts->p_srate; audio->params.p_ssize = audio_opts->p_ssize; + if (FUOUT_EN(audio_opts)) { + audio->params.c_fu.id = USB_OUT_FU_ID; + audio->params.c_fu.mute_present = audio_opts->c_mute_present; + audio->params.c_fu.volume_present = + audio_opts->c_volume_present; + audio->params.c_fu.volume_min = audio_opts->c_volume_min; + audio->params.c_fu.volume_max = audio_opts->c_volume_max; + audio->params.c_fu.volume_res = audio_opts->c_volume_res; + } audio->params.req_number = audio_opts->req_number; + if (FUOUT_EN(audio_opts) || FUIN_EN(audio_opts)) + audio->notify = audio_notify; status = g_audio_setup(audio, "UAC1_PCM", "UAC1_Gadget"); if (status) @@ -758,6 +1332,11 @@ static int f_audio_bind(struct usb_configuration *c, struct usb_function *f) err_card_register: usb_free_all_descriptors(f); +err_free_fu: + kfree(out_feature_unit_desc); + out_feature_unit_desc = NULL; + kfree(in_feature_unit_desc); + in_feature_unit_desc = NULL; fail: kfree(ac_header_desc); ac_header_desc = NULL; @@ -783,7 +1362,15 @@ static struct configfs_item_operations f_uac1_item_ops = { .release = f_uac1_attr_release, }; -#define UAC1_ATTRIBUTE(name) \ +#define uac1_kstrtou32 kstrtou32 +#define uac1_kstrtos16 kstrtos16 +#define uac1_kstrtobool(s, base, res) kstrtobool((s), (res)) + +static const char *u32_fmt = "%u\n"; +static const char *s16_fmt = "%hd\n"; +static const char *bool_fmt = "%u\n"; + +#define UAC1_ATTRIBUTE(type, name) \ static ssize_t f_uac1_opts_##name##_show( \ struct config_item *item, \ char *page) \ @@ -792,7 +1379,7 @@ static ssize_t f_uac1_opts_##name##_show( \ int result; \ \ mutex_lock(&opts->lock); \ - result = sprintf(page, "%u\n", opts->name); \ + result = sprintf(page, type##_fmt, opts->name); \ mutex_unlock(&opts->lock); \ \ return result; \ @@ -804,7 +1391,7 @@ static ssize_t f_uac1_opts_##name##_store( \ { \ struct f_uac1_opts *opts = to_f_uac1_opts(item); \ int ret; \ - u32 num; \ + type num; \ \ mutex_lock(&opts->lock); \ if (opts->refcnt) { \ @@ -812,7 +1399,7 @@ static ssize_t f_uac1_opts_##name##_store( \ goto end; \ } \ \ - ret = kstrtou32(page, 0, &num); \ + ret = uac1_kstrto##type(page, 0, &num); \ if (ret) \ goto end; \ \ @@ -826,13 +1413,25 @@ end: \ \ CONFIGFS_ATTR(f_uac1_opts_, name) -UAC1_ATTRIBUTE(c_chmask); -UAC1_ATTRIBUTE(c_srate); -UAC1_ATTRIBUTE(c_ssize); -UAC1_ATTRIBUTE(p_chmask); -UAC1_ATTRIBUTE(p_srate); -UAC1_ATTRIBUTE(p_ssize); -UAC1_ATTRIBUTE(req_number); +UAC1_ATTRIBUTE(u32, c_chmask); +UAC1_ATTRIBUTE(u32, c_srate); +UAC1_ATTRIBUTE(u32, c_ssize); +UAC1_ATTRIBUTE(u32, p_chmask); +UAC1_ATTRIBUTE(u32, p_srate); +UAC1_ATTRIBUTE(u32, p_ssize); +UAC1_ATTRIBUTE(u32, req_number); + +UAC1_ATTRIBUTE(bool, p_mute_present); +UAC1_ATTRIBUTE(bool, p_volume_present); +UAC1_ATTRIBUTE(s16, p_volume_min); +UAC1_ATTRIBUTE(s16, p_volume_max); +UAC1_ATTRIBUTE(s16, p_volume_res); + +UAC1_ATTRIBUTE(bool, c_mute_present); +UAC1_ATTRIBUTE(bool, c_volume_present); +UAC1_ATTRIBUTE(s16, c_volume_min); +UAC1_ATTRIBUTE(s16, c_volume_max); +UAC1_ATTRIBUTE(s16, c_volume_res); static struct configfs_attribute *f_uac1_attrs[] = { &f_uac1_opts_attr_c_chmask, @@ -842,6 +1441,19 @@ static struct configfs_attribute *f_uac1_attrs[] = { &f_uac1_opts_attr_p_srate, &f_uac1_opts_attr_p_ssize, &f_uac1_opts_attr_req_number, + + &f_uac1_opts_attr_p_mute_present, + &f_uac1_opts_attr_p_volume_present, + &f_uac1_opts_attr_p_volume_min, + &f_uac1_opts_attr_p_volume_max, + &f_uac1_opts_attr_p_volume_res, + + &f_uac1_opts_attr_c_mute_present, + &f_uac1_opts_attr_c_volume_present, + &f_uac1_opts_attr_c_volume_min, + &f_uac1_opts_attr_c_volume_max, + &f_uac1_opts_attr_c_volume_res, + NULL, }; @@ -879,6 +1491,19 @@ static struct usb_function_instance *f_audio_alloc_inst(void) opts->p_chmask = UAC1_DEF_PCHMASK; opts->p_srate = UAC1_DEF_PSRATE; opts->p_ssize = UAC1_DEF_PSSIZE; + + opts->p_mute_present = UAC1_DEF_MUTE_PRESENT; + opts->p_volume_present = UAC1_DEF_VOLUME_PRESENT; + opts->p_volume_min = UAC1_DEF_MIN_DB; + opts->p_volume_max = UAC1_DEF_MAX_DB; + opts->p_volume_res = UAC1_DEF_RES_DB; + + opts->c_mute_present = UAC1_DEF_MUTE_PRESENT; + opts->c_volume_present = UAC1_DEF_VOLUME_PRESENT; + opts->c_volume_min = UAC1_DEF_MIN_DB; + opts->c_volume_max = UAC1_DEF_MAX_DB; + opts->c_volume_res = UAC1_DEF_RES_DB; + opts->req_number = UAC1_DEF_REQ_NUM; return &opts->func_inst; } @@ -903,6 +1528,11 @@ static void f_audio_unbind(struct usb_configuration *c, struct usb_function *f) g_audio_cleanup(audio); usb_free_all_descriptors(f); + kfree(out_feature_unit_desc); + out_feature_unit_desc = NULL; + kfree(in_feature_unit_desc); + in_feature_unit_desc = NULL; + kfree(ac_header_desc); ac_header_desc = NULL; diff --git a/drivers/usb/gadget/function/f_uac2.c b/drivers/usb/gadget/function/f_uac2.c index ae29ff2b2b68..b9edc6787f79 100644 --- a/drivers/usb/gadget/function/f_uac2.c +++ b/drivers/usb/gadget/function/f_uac2.c @@ -5,6 +5,9 @@ * Copyright (C) 2011 * Yadwinder Singh (yadi.brar01@gmail.com) * Jaswinder Singh (jaswinder.singh@linaro.org) + * + * Copyright (C) 2020 + * Ruslan Bilovol (ruslan.bilovol@gmail.com) */ #include <linux/usb/audio.h> @@ -19,14 +22,16 @@ /* * The driver implements a simple UAC_2 topology. - * USB-OUT -> IT_1 -> OT_3 -> ALSA_Capture - * ALSA_Playback -> IT_2 -> OT_4 -> USB-IN + * USB-OUT -> IT_1 -> FU -> OT_3 -> ALSA_Capture + * ALSA_Playback -> IT_2 -> FU -> OT_4 -> USB-IN * Capture and Playback sampling rates are independently * controlled by two clock sources : * CLK_5 := c_srate, and CLK_6 := p_srate */ #define USB_OUT_CLK_ID (out_clk_src_desc.bClockID) #define USB_IN_CLK_ID (in_clk_src_desc.bClockID) +#define USB_OUT_FU_ID (out_feature_unit_desc->bUnitID) +#define USB_IN_FU_ID (in_feature_unit_desc->bUnitID) #define CONTROL_ABSENT 0 #define CONTROL_RDONLY 1 @@ -34,6 +39,8 @@ #define CLK_FREQ_CTRL 0 #define CLK_VLD_CTRL 2 +#define FU_MUTE_CTRL 0 +#define FU_VOL_CTRL 2 #define COPY_CTRL 0 #define CONN_CTRL 2 @@ -44,12 +51,24 @@ #define EPIN_EN(_opts) ((_opts)->p_chmask != 0) #define EPOUT_EN(_opts) ((_opts)->c_chmask != 0) +#define FUIN_EN(_opts) (EPIN_EN(_opts) \ + && ((_opts)->p_mute_present \ + || (_opts)->p_volume_present)) +#define FUOUT_EN(_opts) (EPOUT_EN(_opts) \ + && ((_opts)->c_mute_present \ + || (_opts)->c_volume_present)) #define EPOUT_FBACK_IN_EN(_opts) ((_opts)->c_sync == USB_ENDPOINT_SYNC_ASYNC) struct f_uac2 { struct g_audio g_audio; u8 ac_intf, as_in_intf, as_out_intf; u8 ac_alt, as_in_alt, as_out_alt; /* needed for get_alt() */ + + struct usb_ctrlrequest setup_cr; /* will be used in data stage */ + + /* Interrupt IN endpoint of AC interface */ + struct usb_ep *int_ep; + atomic_t int_count; }; static inline struct f_uac2 *func_to_uac2(struct usb_function *f) @@ -63,6 +82,8 @@ struct f_uac2_opts *g_audio_to_uac2_opts(struct g_audio *agdev) return container_of(agdev->func.fi, struct f_uac2_opts, func_inst); } +static int afunc_notify(struct g_audio *agdev, int unit_id, int cs); + /* --------- USB Function Interface ------------- */ enum { @@ -74,6 +95,8 @@ enum { STR_IO_IT, STR_USB_OT, STR_IO_OT, + STR_FU_IN, + STR_FU_OUT, STR_AS_OUT_ALT0, STR_AS_OUT_ALT1, STR_AS_IN_ALT0, @@ -92,6 +115,8 @@ static struct usb_string strings_fn[] = { [STR_IO_IT].s = "USBD Out", [STR_USB_OT].s = "USBH In", [STR_IO_OT].s = "USBD In", + [STR_FU_IN].s = "Capture Volume", + [STR_FU_OUT].s = "Playback Volume", [STR_AS_OUT_ALT0].s = "Playback Inactive", [STR_AS_OUT_ALT1].s = "Playback Active", [STR_AS_IN_ALT0].s = "Capture Inactive", @@ -126,7 +151,7 @@ static struct usb_interface_descriptor std_ac_if_desc = { .bDescriptorType = USB_DT_INTERFACE, .bAlternateSetting = 0, - .bNumEndpoints = 0, + /* .bNumEndpoints = DYNAMIC */ .bInterfaceClass = USB_CLASS_AUDIO, .bInterfaceSubClass = USB_SUBCLASS_AUDIOCONTROL, .bInterfaceProtocol = UAC_VERSION_2, @@ -212,6 +237,9 @@ static struct uac2_output_terminal_descriptor io_out_ot_desc = { .bmControls = cpu_to_le16(CONTROL_RDWR << COPY_CTRL), }; +static struct uac2_feature_unit_descriptor *in_feature_unit_desc; +static struct uac2_feature_unit_descriptor *out_feature_unit_desc; + static struct uac2_ac_header_descriptor ac_hdr_desc = { .bLength = sizeof ac_hdr_desc, .bDescriptorType = USB_DT_CS_INTERFACE, @@ -223,6 +251,36 @@ static struct uac2_ac_header_descriptor ac_hdr_desc = { .bmControls = 0, }; +/* AC IN Interrupt Endpoint */ +static struct usb_endpoint_descriptor fs_ep_int_desc = { + .bLength = USB_DT_ENDPOINT_SIZE, + .bDescriptorType = USB_DT_ENDPOINT, + + .bEndpointAddress = USB_DIR_IN, + .bmAttributes = USB_ENDPOINT_XFER_INT, + .wMaxPacketSize = cpu_to_le16(6), + .bInterval = 1, +}; + +static struct usb_endpoint_descriptor hs_ep_int_desc = { + .bLength = USB_DT_ENDPOINT_SIZE, + .bDescriptorType = USB_DT_ENDPOINT, + + .bmAttributes = USB_ENDPOINT_XFER_INT, + .wMaxPacketSize = cpu_to_le16(6), + .bInterval = 4, +}; + +static struct usb_endpoint_descriptor ss_ep_int_desc = { + .bLength = USB_DT_ENDPOINT_SIZE, + .bDescriptorType = USB_DT_ENDPOINT, + + .bEndpointAddress = USB_DIR_IN, + .bmAttributes = USB_ENDPOINT_XFER_INT, + .wMaxPacketSize = cpu_to_le16(6), + .bInterval = 4, +}; + /* Audio Streaming OUT Interface - Alt0 */ static struct usb_interface_descriptor std_as_out_if0_desc = { .bLength = sizeof std_as_out_if0_desc, @@ -452,10 +510,14 @@ static struct usb_descriptor_header *fs_audio_desc[] = { (struct usb_descriptor_header *)&in_clk_src_desc, (struct usb_descriptor_header *)&out_clk_src_desc, (struct usb_descriptor_header *)&usb_out_it_desc, + (struct usb_descriptor_header *)&out_feature_unit_desc, (struct usb_descriptor_header *)&io_in_it_desc, (struct usb_descriptor_header *)&usb_in_ot_desc, + (struct usb_descriptor_header *)&in_feature_unit_desc, (struct usb_descriptor_header *)&io_out_ot_desc, + (struct usb_descriptor_header *)&fs_ep_int_desc, + (struct usb_descriptor_header *)&std_as_out_if0_desc, (struct usb_descriptor_header *)&std_as_out_if1_desc, @@ -483,10 +545,14 @@ static struct usb_descriptor_header *hs_audio_desc[] = { (struct usb_descriptor_header *)&in_clk_src_desc, (struct usb_descriptor_header *)&out_clk_src_desc, (struct usb_descriptor_header *)&usb_out_it_desc, + (struct usb_descriptor_header *)&out_feature_unit_desc, (struct usb_descriptor_header *)&io_in_it_desc, (struct usb_descriptor_header *)&usb_in_ot_desc, + (struct usb_descriptor_header *)&in_feature_unit_desc, (struct usb_descriptor_header *)&io_out_ot_desc, + (struct usb_descriptor_header *)&hs_ep_int_desc, + (struct usb_descriptor_header *)&std_as_out_if0_desc, (struct usb_descriptor_header *)&std_as_out_if1_desc, @@ -514,10 +580,14 @@ static struct usb_descriptor_header *ss_audio_desc[] = { (struct usb_descriptor_header *)&in_clk_src_desc, (struct usb_descriptor_header *)&out_clk_src_desc, (struct usb_descriptor_header *)&usb_out_it_desc, + (struct usb_descriptor_header *)&out_feature_unit_desc, (struct usb_descriptor_header *)&io_in_it_desc, (struct usb_descriptor_header *)&usb_in_ot_desc, + (struct usb_descriptor_header *)&in_feature_unit_desc, (struct usb_descriptor_header *)&io_out_ot_desc, + (struct usb_descriptor_header *)&ss_ep_int_desc, + (struct usb_descriptor_header *)&std_as_out_if0_desc, (struct usb_descriptor_header *)&std_as_out_if1_desc, @@ -539,6 +609,17 @@ static struct usb_descriptor_header *ss_audio_desc[] = { NULL, }; +struct cntrl_cur_lay2 { + __le16 wCUR; +}; + +struct cntrl_range_lay2 { + __le16 wNumSubRanges; + __le16 wMIN; + __le16 wMAX; + __le16 wRES; +} __packed; + struct cntrl_cur_lay3 { __le32 dCUR; }; @@ -595,6 +676,26 @@ static int set_ep_max_packet_size(const struct f_uac2_opts *uac2_opts, return 0; } +static struct uac2_feature_unit_descriptor *build_fu_desc(int chmask) +{ + struct uac2_feature_unit_descriptor *fu_desc; + int channels = num_channels(chmask); + int fu_desc_size = UAC2_DT_FEATURE_UNIT_SIZE(channels); + + fu_desc = kzalloc(fu_desc_size, GFP_KERNEL); + if (!fu_desc) + return NULL; + + fu_desc->bLength = fu_desc_size; + fu_desc->bDescriptorType = USB_DT_CS_INTERFACE; + + fu_desc->bDescriptorSubtype = UAC_FEATURE_UNIT; + + /* bUnitID, bSourceID and bmaControls will be defined later */ + + return fu_desc; +} + /* Use macro to overcome line length limitation */ #define USBDHDR(p) (struct usb_descriptor_header *)(p) @@ -607,6 +708,7 @@ static void setup_headers(struct f_uac2_opts *opts, struct usb_endpoint_descriptor *epout_desc; struct usb_endpoint_descriptor *epin_desc; struct usb_endpoint_descriptor *epin_fback_desc; + struct usb_endpoint_descriptor *ep_int_desc; int i; switch (speed) { @@ -614,11 +716,13 @@ static void setup_headers(struct f_uac2_opts *opts, epout_desc = &fs_epout_desc; epin_desc = &fs_epin_desc; epin_fback_desc = &fs_epin_fback_desc; + ep_int_desc = &fs_ep_int_desc; break; case USB_SPEED_HIGH: epout_desc = &hs_epout_desc; epin_desc = &hs_epin_desc; epin_fback_desc = &hs_epin_fback_desc; + ep_int_desc = &hs_ep_int_desc; break; default: epout_desc = &ss_epout_desc; @@ -626,6 +730,7 @@ static void setup_headers(struct f_uac2_opts *opts, epout_desc_comp = &ss_epout_desc_comp; epin_desc_comp = &ss_epin_desc_comp; epin_fback_desc = &ss_epin_fback_desc; + ep_int_desc = &ss_ep_int_desc; } i = 0; @@ -637,13 +742,27 @@ static void setup_headers(struct f_uac2_opts *opts, if (EPOUT_EN(opts)) { headers[i++] = USBDHDR(&out_clk_src_desc); headers[i++] = USBDHDR(&usb_out_it_desc); - } + + if (FUOUT_EN(opts)) + headers[i++] = USBDHDR(out_feature_unit_desc); + } + if (EPIN_EN(opts)) { headers[i++] = USBDHDR(&io_in_it_desc); + + if (FUIN_EN(opts)) + headers[i++] = USBDHDR(in_feature_unit_desc); + headers[i++] = USBDHDR(&usb_in_ot_desc); } - if (EPOUT_EN(opts)) { + + if (EPOUT_EN(opts)) headers[i++] = USBDHDR(&io_out_ot_desc); + + if (FUOUT_EN(opts) || FUIN_EN(opts)) + headers[i++] = USBDHDR(ep_int_desc); + + if (EPOUT_EN(opts)) { headers[i++] = USBDHDR(&std_as_out_if0_desc); headers[i++] = USBDHDR(&std_as_out_if1_desc); headers[i++] = USBDHDR(&as_out_hdr_desc); @@ -657,6 +776,7 @@ static void setup_headers(struct f_uac2_opts *opts, if (EPOUT_FBACK_IN_EN(opts)) headers[i++] = USBDHDR(epin_fback_desc); } + if (EPIN_EN(opts)) { headers[i++] = USBDHDR(&std_as_in_if0_desc); headers[i++] = USBDHDR(&std_as_in_if1_desc); @@ -684,17 +804,35 @@ static void setup_descriptor(struct f_uac2_opts *opts) io_out_ot_desc.bTerminalID = i++; if (EPIN_EN(opts)) usb_in_ot_desc.bTerminalID = i++; + if (FUOUT_EN(opts)) + out_feature_unit_desc->bUnitID = i++; + if (FUIN_EN(opts)) + in_feature_unit_desc->bUnitID = i++; if (EPOUT_EN(opts)) out_clk_src_desc.bClockID = i++; if (EPIN_EN(opts)) in_clk_src_desc.bClockID = i++; usb_out_it_desc.bCSourceID = out_clk_src_desc.bClockID; - usb_in_ot_desc.bSourceID = io_in_it_desc.bTerminalID; + + if (FUIN_EN(opts)) { + usb_in_ot_desc.bSourceID = in_feature_unit_desc->bUnitID; + in_feature_unit_desc->bSourceID = io_in_it_desc.bTerminalID; + } else { + usb_in_ot_desc.bSourceID = io_in_it_desc.bTerminalID; + } + usb_in_ot_desc.bCSourceID = in_clk_src_desc.bClockID; io_in_it_desc.bCSourceID = in_clk_src_desc.bClockID; io_out_ot_desc.bCSourceID = out_clk_src_desc.bClockID; - io_out_ot_desc.bSourceID = usb_out_it_desc.bTerminalID; + + if (FUOUT_EN(opts)) { + io_out_ot_desc.bSourceID = out_feature_unit_desc->bUnitID; + out_feature_unit_desc->bSourceID = usb_out_it_desc.bTerminalID; + } else { + io_out_ot_desc.bSourceID = usb_out_it_desc.bTerminalID; + } + as_out_hdr_desc.bTerminalLink = usb_out_it_desc.bTerminalID; as_in_hdr_desc.bTerminalLink = usb_in_ot_desc.bTerminalID; @@ -706,6 +844,10 @@ static void setup_descriptor(struct f_uac2_opts *opts) len += sizeof(in_clk_src_desc); len += sizeof(usb_in_ot_desc); + + if (FUIN_EN(opts)) + len += in_feature_unit_desc->bLength; + len += sizeof(io_in_it_desc); ac_hdr_desc.wTotalLength = cpu_to_le16(len); iad_desc.bInterfaceCount++; @@ -715,6 +857,10 @@ static void setup_descriptor(struct f_uac2_opts *opts) len += sizeof(out_clk_src_desc); len += sizeof(usb_out_it_desc); + + if (FUOUT_EN(opts)) + len += out_feature_unit_desc->bLength; + len += sizeof(io_out_ot_desc); ac_hdr_desc.wTotalLength = cpu_to_le16(len); iad_desc.bInterfaceCount++; @@ -752,6 +898,28 @@ static int afunc_validate_opts(struct g_audio *agdev, struct device *dev) return -EINVAL; } + if (opts->p_volume_max <= opts->p_volume_min) { + dev_err(dev, "Error: incorrect playback volume max/min\n"); + return -EINVAL; + } else if (opts->c_volume_max <= opts->c_volume_min) { + dev_err(dev, "Error: incorrect capture volume max/min\n"); + return -EINVAL; + } else if (opts->p_volume_res <= 0) { + dev_err(dev, "Error: negative/zero playback volume resolution\n"); + return -EINVAL; + } else if (opts->c_volume_res <= 0) { + dev_err(dev, "Error: negative/zero capture volume resolution\n"); + return -EINVAL; + } + + if ((opts->p_volume_max - opts->p_volume_min) % opts->p_volume_res) { + dev_err(dev, "Error: incorrect playback volume resolution\n"); + return -EINVAL; + } else if ((opts->c_volume_max - opts->c_volume_min) % opts->c_volume_res) { + dev_err(dev, "Error: incorrect capture volume resolution\n"); + return -EINVAL; + } + return 0; } @@ -774,6 +942,20 @@ afunc_bind(struct usb_configuration *cfg, struct usb_function *fn) us = usb_gstrings_attach(cdev, fn_strings, ARRAY_SIZE(strings_fn)); if (IS_ERR(us)) return PTR_ERR(us); + + if (FUOUT_EN(uac2_opts)) { + out_feature_unit_desc = build_fu_desc(uac2_opts->c_chmask); + if (!out_feature_unit_desc) + return -ENOMEM; + } + if (FUIN_EN(uac2_opts)) { + in_feature_unit_desc = build_fu_desc(uac2_opts->p_chmask); + if (!in_feature_unit_desc) { + ret = -ENOMEM; + goto err_free_fu; + } + } + iad_desc.iFunction = us[STR_ASSOC].id; std_ac_if_desc.iInterface = us[STR_IF_CTRL].id; in_clk_src_desc.iClockSource = us[STR_CLKSRC_IN].id; @@ -787,6 +969,21 @@ afunc_bind(struct usb_configuration *cfg, struct usb_function *fn) std_as_in_if0_desc.iInterface = us[STR_AS_IN_ALT0].id; std_as_in_if1_desc.iInterface = us[STR_AS_IN_ALT1].id; + if (FUOUT_EN(uac2_opts)) { + u8 *i_feature = (u8 *)out_feature_unit_desc; + + i_feature = (u8 *)out_feature_unit_desc + + out_feature_unit_desc->bLength - 1; + *i_feature = us[STR_FU_OUT].id; + } + if (FUIN_EN(uac2_opts)) { + u8 *i_feature = (u8 *)in_feature_unit_desc; + + i_feature = (u8 *)in_feature_unit_desc + + in_feature_unit_desc->bLength - 1; + *i_feature = us[STR_FU_IN].id; + } + /* Initialize the configurable parameters */ usb_out_it_desc.bNrChannels = num_channels(uac2_opts->c_chmask); @@ -801,6 +998,26 @@ afunc_bind(struct usb_configuration *cfg, struct usb_function *fn) as_out_fmt1_desc.bBitResolution = uac2_opts->c_ssize * 8; as_in_fmt1_desc.bSubslotSize = uac2_opts->p_ssize; as_in_fmt1_desc.bBitResolution = uac2_opts->p_ssize * 8; + if (FUOUT_EN(uac2_opts)) { + __le32 *bma = (__le32 *)&out_feature_unit_desc->bmaControls[0]; + u32 control = 0; + + if (uac2_opts->c_mute_present) + control |= CONTROL_RDWR << FU_MUTE_CTRL; + if (uac2_opts->c_volume_present) + control |= CONTROL_RDWR << FU_VOL_CTRL; + *bma = cpu_to_le32(control); + } + if (FUIN_EN(uac2_opts)) { + __le32 *bma = (__le32 *)&in_feature_unit_desc->bmaControls[0]; + u32 control = 0; + + if (uac2_opts->p_mute_present) + control |= CONTROL_RDWR << FU_MUTE_CTRL; + if (uac2_opts->p_volume_present) + control |= CONTROL_RDWR << FU_VOL_CTRL; + *bma = cpu_to_le32(control); + } snprintf(clksrc_in, sizeof(clksrc_in), "%uHz", uac2_opts->p_srate); snprintf(clksrc_out, sizeof(clksrc_out), "%uHz", uac2_opts->c_srate); @@ -808,7 +1025,7 @@ afunc_bind(struct usb_configuration *cfg, struct usb_function *fn) ret = usb_interface_id(cfg, fn); if (ret < 0) { dev_err(dev, "%s:%d Error!\n", __func__, __LINE__); - return ret; + goto err_free_fu; } iad_desc.bFirstInterface = ret; @@ -820,7 +1037,7 @@ afunc_bind(struct usb_configuration *cfg, struct usb_function *fn) ret = usb_interface_id(cfg, fn); if (ret < 0) { dev_err(dev, "%s:%d Error!\n", __func__, __LINE__); - return ret; + goto err_free_fu; } std_as_out_if0_desc.bInterfaceNumber = ret; std_as_out_if1_desc.bInterfaceNumber = ret; @@ -849,7 +1066,7 @@ afunc_bind(struct usb_configuration *cfg, struct usb_function *fn) ret = usb_interface_id(cfg, fn); if (ret < 0) { dev_err(dev, "%s:%d Error!\n", __func__, __LINE__); - return ret; + goto err_free_fu; } std_as_in_if0_desc.bInterfaceNumber = ret; std_as_in_if1_desc.bInterfaceNumber = ret; @@ -857,6 +1074,17 @@ afunc_bind(struct usb_configuration *cfg, struct usb_function *fn) uac2->as_in_alt = 0; } + if (FUOUT_EN(uac2_opts) || FUIN_EN(uac2_opts)) { + uac2->int_ep = usb_ep_autoconfig(gadget, &fs_ep_int_desc); + if (!uac2->int_ep) { + dev_err(dev, "%s:%d Error!\n", __func__, __LINE__); + ret = -ENODEV; + goto err_free_fu; + } + + std_ac_if_desc.bNumEndpoints = 1; + } + /* Calculate wMaxPacketSize according to audio bandwidth */ ret = set_ep_max_packet_size(uac2_opts, &fs_epin_desc, USB_SPEED_FULL, true); @@ -904,7 +1132,8 @@ afunc_bind(struct usb_configuration *cfg, struct usb_function *fn) agdev->out_ep = usb_ep_autoconfig(gadget, &fs_epout_desc); if (!agdev->out_ep) { dev_err(dev, "%s:%d Error!\n", __func__, __LINE__); - return -ENODEV; + ret = -ENODEV; + goto err_free_fu; } if (EPOUT_FBACK_IN_EN(uac2_opts)) { agdev->in_ep_fback = usb_ep_autoconfig(gadget, @@ -912,7 +1141,8 @@ afunc_bind(struct usb_configuration *cfg, struct usb_function *fn) if (!agdev->in_ep_fback) { dev_err(dev, "%s:%d Error!\n", __func__, __LINE__); - return -ENODEV; + ret = -ENODEV; + goto err_free_fu; } } } @@ -921,7 +1151,8 @@ afunc_bind(struct usb_configuration *cfg, struct usb_function *fn) agdev->in_ep = usb_ep_autoconfig(gadget, &fs_epin_desc); if (!agdev->in_ep) { dev_err(dev, "%s:%d Error!\n", __func__, __LINE__); - return -ENODEV; + ret = -ENODEV; + goto err_free_fu; } } @@ -937,38 +1168,137 @@ afunc_bind(struct usb_configuration *cfg, struct usb_function *fn) agdev->out_ep_maxpsize = max_t(u16, agdev->out_ep_maxpsize, le16_to_cpu(ss_epout_desc.wMaxPacketSize)); + // HS and SS endpoint addresses are copied from autoconfigured FS descriptors + hs_ep_int_desc.bEndpointAddress = fs_ep_int_desc.bEndpointAddress; hs_epout_desc.bEndpointAddress = fs_epout_desc.bEndpointAddress; hs_epin_fback_desc.bEndpointAddress = fs_epin_fback_desc.bEndpointAddress; hs_epin_desc.bEndpointAddress = fs_epin_desc.bEndpointAddress; ss_epout_desc.bEndpointAddress = fs_epout_desc.bEndpointAddress; ss_epin_fback_desc.bEndpointAddress = fs_epin_fback_desc.bEndpointAddress; ss_epin_desc.bEndpointAddress = fs_epin_desc.bEndpointAddress; + ss_ep_int_desc.bEndpointAddress = fs_ep_int_desc.bEndpointAddress; setup_descriptor(uac2_opts); ret = usb_assign_descriptors(fn, fs_audio_desc, hs_audio_desc, ss_audio_desc, ss_audio_desc); if (ret) - return ret; + goto err_free_fu; agdev->gadget = gadget; agdev->params.p_chmask = uac2_opts->p_chmask; agdev->params.p_srate = uac2_opts->p_srate; agdev->params.p_ssize = uac2_opts->p_ssize; + if (FUIN_EN(uac2_opts)) { + agdev->params.p_fu.id = USB_IN_FU_ID; + agdev->params.p_fu.mute_present = uac2_opts->p_mute_present; + agdev->params.p_fu.volume_present = uac2_opts->p_volume_present; + agdev->params.p_fu.volume_min = uac2_opts->p_volume_min; + agdev->params.p_fu.volume_max = uac2_opts->p_volume_max; + agdev->params.p_fu.volume_res = uac2_opts->p_volume_res; + } agdev->params.c_chmask = uac2_opts->c_chmask; agdev->params.c_srate = uac2_opts->c_srate; agdev->params.c_ssize = uac2_opts->c_ssize; + if (FUOUT_EN(uac2_opts)) { + agdev->params.c_fu.id = USB_OUT_FU_ID; + agdev->params.c_fu.mute_present = uac2_opts->c_mute_present; + agdev->params.c_fu.volume_present = uac2_opts->c_volume_present; + agdev->params.c_fu.volume_min = uac2_opts->c_volume_min; + agdev->params.c_fu.volume_max = uac2_opts->c_volume_max; + agdev->params.c_fu.volume_res = uac2_opts->c_volume_res; + } agdev->params.req_number = uac2_opts->req_number; agdev->params.fb_max = uac2_opts->fb_max; + + if (FUOUT_EN(uac2_opts) || FUIN_EN(uac2_opts)) + agdev->notify = afunc_notify; + ret = g_audio_setup(agdev, "UAC2 PCM", "UAC2_Gadget"); if (ret) goto err_free_descs; + return 0; err_free_descs: usb_free_all_descriptors(fn); agdev->gadget = NULL; +err_free_fu: + kfree(out_feature_unit_desc); + out_feature_unit_desc = NULL; + kfree(in_feature_unit_desc); + in_feature_unit_desc = NULL; + return ret; +} + +static void +afunc_notify_complete(struct usb_ep *_ep, struct usb_request *req) +{ + struct g_audio *agdev = req->context; + struct f_uac2 *uac2 = func_to_uac2(&agdev->func); + + atomic_dec(&uac2->int_count); + kfree(req->buf); + usb_ep_free_request(_ep, req); +} + +static int +afunc_notify(struct g_audio *agdev, int unit_id, int cs) +{ + struct f_uac2 *uac2 = func_to_uac2(&agdev->func); + struct usb_request *req; + struct uac2_interrupt_data_msg *msg; + u16 w_index, w_value; + int ret; + + if (!uac2->int_ep->enabled) + return 0; + + if (atomic_inc_return(&uac2->int_count) > UAC2_DEF_INT_REQ_NUM) { + atomic_dec(&uac2->int_count); + return 0; + } + + req = usb_ep_alloc_request(uac2->int_ep, GFP_ATOMIC); + if (req == NULL) { + ret = -ENOMEM; + goto err_dec_int_count; + } + + msg = kzalloc(sizeof(*msg), GFP_ATOMIC); + if (msg == NULL) { + ret = -ENOMEM; + goto err_free_request; + } + + w_index = unit_id << 8 | uac2->ac_intf; + w_value = cs << 8; + + msg->bInfo = 0; /* Non-vendor, interface interrupt */ + msg->bAttribute = UAC2_CS_CUR; + msg->wIndex = cpu_to_le16(w_index); + msg->wValue = cpu_to_le16(w_value); + + req->length = sizeof(*msg); + req->buf = msg; + req->context = agdev; + req->complete = afunc_notify_complete; + + ret = usb_ep_queue(uac2->int_ep, req, GFP_ATOMIC); + + if (ret) + goto err_free_msg; + + return 0; + +err_free_msg: + kfree(msg); +err_free_request: + usb_ep_free_request(uac2->int_ep, req); +err_dec_int_count: + atomic_dec(&uac2->int_count); + return ret; } @@ -977,6 +1307,7 @@ afunc_set_alt(struct usb_function *fn, unsigned intf, unsigned alt) { struct usb_composite_dev *cdev = fn->config->cdev; struct f_uac2 *uac2 = func_to_uac2(fn); + struct g_audio *agdev = func_to_g_audio(fn); struct usb_gadget *gadget = cdev->gadget; struct device *dev = &gadget->dev; int ret = 0; @@ -993,6 +1324,14 @@ afunc_set_alt(struct usb_function *fn, unsigned intf, unsigned alt) dev_err(dev, "%s:%d Error!\n", __func__, __LINE__); return -EINVAL; } + + /* restart interrupt endpoint */ + if (uac2->int_ep) { + usb_ep_disable(uac2->int_ep); + config_ep_by_speed(gadget, &agdev->func, uac2->int_ep); + usb_ep_enable(uac2->int_ep); + } + return 0; } @@ -1047,6 +1386,8 @@ afunc_disable(struct usb_function *fn) uac2->as_out_alt = 0; u_audio_stop_capture(&uac2->g_audio); u_audio_stop_playback(&uac2->g_audio); + if (uac2->int_ep) + usb_ep_disable(uac2->int_ep); } static int @@ -1054,7 +1395,7 @@ in_rq_cur(struct usb_function *fn, const struct usb_ctrlrequest *cr) { struct usb_request *req = fn->config->cdev->req; struct g_audio *agdev = func_to_g_audio(fn); - struct f_uac2_opts *opts; + struct f_uac2_opts *opts = g_audio_to_uac2_opts(agdev); u16 w_length = le16_to_cpu(cr->wLength); u16 w_index = le16_to_cpu(cr->wIndex); u16 w_value = le16_to_cpu(cr->wValue); @@ -1063,28 +1404,64 @@ in_rq_cur(struct usb_function *fn, const struct usb_ctrlrequest *cr) int value = -EOPNOTSUPP; int p_srate, c_srate; - opts = g_audio_to_uac2_opts(agdev); p_srate = opts->p_srate; c_srate = opts->c_srate; - if (control_selector == UAC2_CS_CONTROL_SAM_FREQ) { - struct cntrl_cur_lay3 c; - memset(&c, 0, sizeof(struct cntrl_cur_lay3)); + if ((entity_id == USB_IN_CLK_ID) || (entity_id == USB_OUT_CLK_ID)) { + if (control_selector == UAC2_CS_CONTROL_SAM_FREQ) { + struct cntrl_cur_lay3 c; + + memset(&c, 0, sizeof(struct cntrl_cur_lay3)); + + if (entity_id == USB_IN_CLK_ID) + c.dCUR = cpu_to_le32(p_srate); + else if (entity_id == USB_OUT_CLK_ID) + c.dCUR = cpu_to_le32(c_srate); + + value = min_t(unsigned int, w_length, sizeof(c)); + memcpy(req->buf, &c, value); + } else if (control_selector == UAC2_CS_CONTROL_CLOCK_VALID) { + *(u8 *)req->buf = 1; + value = min_t(unsigned int, w_length, 1); + } else { + dev_err(&agdev->gadget->dev, + "%s:%d control_selector=%d TODO!\n", + __func__, __LINE__, control_selector); + } + } else if ((FUIN_EN(opts) && (entity_id == USB_IN_FU_ID)) || + (FUOUT_EN(opts) && (entity_id == USB_OUT_FU_ID))) { + unsigned int is_playback = 0; - if (entity_id == USB_IN_CLK_ID) - c.dCUR = cpu_to_le32(p_srate); - else if (entity_id == USB_OUT_CLK_ID) - c.dCUR = cpu_to_le32(c_srate); + if (FUIN_EN(opts) && (entity_id == USB_IN_FU_ID)) + is_playback = 1; - value = min_t(unsigned, w_length, sizeof c); - memcpy(req->buf, &c, value); - } else if (control_selector == UAC2_CS_CONTROL_CLOCK_VALID) { - *(u8 *)req->buf = 1; - value = min_t(unsigned, w_length, 1); + if (control_selector == UAC_FU_MUTE) { + unsigned int mute; + + u_audio_get_mute(agdev, is_playback, &mute); + + *(u8 *)req->buf = mute; + value = min_t(unsigned int, w_length, 1); + } else if (control_selector == UAC_FU_VOLUME) { + struct cntrl_cur_lay2 c; + s16 volume; + + memset(&c, 0, sizeof(struct cntrl_cur_lay2)); + + u_audio_get_volume(agdev, is_playback, &volume); + c.wCUR = cpu_to_le16(volume); + + value = min_t(unsigned int, w_length, sizeof(c)); + memcpy(req->buf, &c, value); + } else { + dev_err(&agdev->gadget->dev, + "%s:%d control_selector=%d TODO!\n", + __func__, __LINE__, control_selector); + } } else { dev_err(&agdev->gadget->dev, - "%s:%d control_selector=%d TODO!\n", - __func__, __LINE__, control_selector); + "%s:%d entity_id=%d control_selector=%d TODO!\n", + __func__, __LINE__, entity_id, control_selector); } return value; @@ -1095,38 +1472,77 @@ in_rq_range(struct usb_function *fn, const struct usb_ctrlrequest *cr) { struct usb_request *req = fn->config->cdev->req; struct g_audio *agdev = func_to_g_audio(fn); - struct f_uac2_opts *opts; + struct f_uac2_opts *opts = g_audio_to_uac2_opts(agdev); u16 w_length = le16_to_cpu(cr->wLength); u16 w_index = le16_to_cpu(cr->wIndex); u16 w_value = le16_to_cpu(cr->wValue); u8 entity_id = (w_index >> 8) & 0xff; u8 control_selector = w_value >> 8; - struct cntrl_range_lay3 r; int value = -EOPNOTSUPP; int p_srate, c_srate; - opts = g_audio_to_uac2_opts(agdev); p_srate = opts->p_srate; c_srate = opts->c_srate; - if (control_selector == UAC2_CS_CONTROL_SAM_FREQ) { - if (entity_id == USB_IN_CLK_ID) - r.dMIN = cpu_to_le32(p_srate); - else if (entity_id == USB_OUT_CLK_ID) - r.dMIN = cpu_to_le32(c_srate); - else - return -EOPNOTSUPP; + if ((entity_id == USB_IN_CLK_ID) || (entity_id == USB_OUT_CLK_ID)) { + if (control_selector == UAC2_CS_CONTROL_SAM_FREQ) { + struct cntrl_range_lay3 r; + + if (entity_id == USB_IN_CLK_ID) + r.dMIN = cpu_to_le32(p_srate); + else if (entity_id == USB_OUT_CLK_ID) + r.dMIN = cpu_to_le32(c_srate); + else + return -EOPNOTSUPP; - r.dMAX = r.dMIN; - r.dRES = 0; - r.wNumSubRanges = cpu_to_le16(1); + r.dMAX = r.dMIN; + r.dRES = 0; + r.wNumSubRanges = cpu_to_le16(1); - value = min_t(unsigned, w_length, sizeof r); - memcpy(req->buf, &r, value); + value = min_t(unsigned int, w_length, sizeof(r)); + memcpy(req->buf, &r, value); + } else { + dev_err(&agdev->gadget->dev, + "%s:%d control_selector=%d TODO!\n", + __func__, __LINE__, control_selector); + } + } else if ((FUIN_EN(opts) && (entity_id == USB_IN_FU_ID)) || + (FUOUT_EN(opts) && (entity_id == USB_OUT_FU_ID))) { + unsigned int is_playback = 0; + + if (FUIN_EN(opts) && (entity_id == USB_IN_FU_ID)) + is_playback = 1; + + if (control_selector == UAC_FU_VOLUME) { + struct cntrl_range_lay2 r; + s16 max_db, min_db, res_db; + + if (is_playback) { + max_db = opts->p_volume_max; + min_db = opts->p_volume_min; + res_db = opts->p_volume_res; + } else { + max_db = opts->c_volume_max; + min_db = opts->c_volume_min; + res_db = opts->c_volume_res; + } + + r.wMAX = cpu_to_le16(max_db); + r.wMIN = cpu_to_le16(min_db); + r.wRES = cpu_to_le16(res_db); + r.wNumSubRanges = cpu_to_le16(1); + + value = min_t(unsigned int, w_length, sizeof(r)); + memcpy(req->buf, &r, value); + } else { + dev_err(&agdev->gadget->dev, + "%s:%d control_selector=%d TODO!\n", + __func__, __LINE__, control_selector); + } } else { dev_err(&agdev->gadget->dev, - "%s:%d control_selector=%d TODO!\n", - __func__, __LINE__, control_selector); + "%s:%d entity_id=%d control_selector=%d TODO!\n", + __func__, __LINE__, entity_id, control_selector); } return value; @@ -1143,16 +1559,82 @@ ac_rq_in(struct usb_function *fn, const struct usb_ctrlrequest *cr) return -EOPNOTSUPP; } +static void +out_rq_cur_complete(struct usb_ep *ep, struct usb_request *req) +{ + struct g_audio *agdev = req->context; + struct usb_composite_dev *cdev = agdev->func.config->cdev; + struct f_uac2_opts *opts = g_audio_to_uac2_opts(agdev); + struct f_uac2 *uac2 = func_to_uac2(&agdev->func); + struct usb_ctrlrequest *cr = &uac2->setup_cr; + u16 w_index = le16_to_cpu(cr->wIndex); + u16 w_value = le16_to_cpu(cr->wValue); + u8 entity_id = (w_index >> 8) & 0xff; + u8 control_selector = w_value >> 8; + + if (req->status != 0) { + dev_dbg(&cdev->gadget->dev, "completion err %d\n", req->status); + return; + } + + if ((FUIN_EN(opts) && (entity_id == USB_IN_FU_ID)) || + (FUOUT_EN(opts) && (entity_id == USB_OUT_FU_ID))) { + unsigned int is_playback = 0; + + if (FUIN_EN(opts) && (entity_id == USB_IN_FU_ID)) + is_playback = 1; + + if (control_selector == UAC_FU_MUTE) { + u8 mute = *(u8 *)req->buf; + + u_audio_set_mute(agdev, is_playback, mute); + + return; + } else if (control_selector == UAC_FU_VOLUME) { + struct cntrl_cur_lay2 *c = req->buf; + s16 volume; + + volume = le16_to_cpu(c->wCUR); + u_audio_set_volume(agdev, is_playback, volume); + + return; + } else { + dev_err(&agdev->gadget->dev, + "%s:%d control_selector=%d TODO!\n", + __func__, __LINE__, control_selector); + usb_ep_set_halt(ep); + } + } +} + static int out_rq_cur(struct usb_function *fn, const struct usb_ctrlrequest *cr) { + struct usb_request *req = fn->config->cdev->req; + struct g_audio *agdev = func_to_g_audio(fn); + struct f_uac2_opts *opts = g_audio_to_uac2_opts(agdev); + struct f_uac2 *uac2 = func_to_uac2(fn); u16 w_length = le16_to_cpu(cr->wLength); + u16 w_index = le16_to_cpu(cr->wIndex); u16 w_value = le16_to_cpu(cr->wValue); + u8 entity_id = (w_index >> 8) & 0xff; u8 control_selector = w_value >> 8; - if (control_selector == UAC2_CS_CONTROL_SAM_FREQ) - return w_length; + if ((entity_id == USB_IN_CLK_ID) || (entity_id == USB_OUT_CLK_ID)) { + if (control_selector == UAC2_CS_CONTROL_SAM_FREQ) + return w_length; + } else if ((FUIN_EN(opts) && (entity_id == USB_IN_FU_ID)) || + (FUOUT_EN(opts) && (entity_id == USB_OUT_FU_ID))) { + memcpy(&uac2->setup_cr, cr, sizeof(*cr)); + req->context = agdev; + req->complete = out_rq_cur_complete; + return w_length; + } else { + dev_err(&agdev->gadget->dev, + "%s:%d entity_id=%d control_selector=%d TODO!\n", + __func__, __LINE__, entity_id, control_selector); + } return -EOPNOTSUPP; } @@ -1228,7 +1710,15 @@ static struct configfs_item_operations f_uac2_item_ops = { .release = f_uac2_attr_release, }; -#define UAC2_ATTRIBUTE(name) \ +#define uac2_kstrtou32 kstrtou32 +#define uac2_kstrtos16 kstrtos16 +#define uac2_kstrtobool(s, base, res) kstrtobool((s), (res)) + +static const char *u32_fmt = "%u\n"; +static const char *s16_fmt = "%hd\n"; +static const char *bool_fmt = "%u\n"; + +#define UAC2_ATTRIBUTE(type, name) \ static ssize_t f_uac2_opts_##name##_show(struct config_item *item, \ char *page) \ { \ @@ -1236,7 +1726,7 @@ static ssize_t f_uac2_opts_##name##_show(struct config_item *item, \ int result; \ \ mutex_lock(&opts->lock); \ - result = sprintf(page, "%u\n", opts->name); \ + result = sprintf(page, type##_fmt, opts->name); \ mutex_unlock(&opts->lock); \ \ return result; \ @@ -1247,7 +1737,7 @@ static ssize_t f_uac2_opts_##name##_store(struct config_item *item, \ { \ struct f_uac2_opts *opts = to_f_uac2_opts(item); \ int ret; \ - u32 num; \ + type num; \ \ mutex_lock(&opts->lock); \ if (opts->refcnt) { \ @@ -1255,7 +1745,7 @@ static ssize_t f_uac2_opts_##name##_store(struct config_item *item, \ goto end; \ } \ \ - ret = kstrtou32(page, 0, &num); \ + ret = uac2_kstrto##type(page, 0, &num); \ if (ret) \ goto end; \ \ @@ -1325,15 +1815,27 @@ end: \ \ CONFIGFS_ATTR(f_uac2_opts_, name) -UAC2_ATTRIBUTE(p_chmask); -UAC2_ATTRIBUTE(p_srate); -UAC2_ATTRIBUTE(p_ssize); -UAC2_ATTRIBUTE(c_chmask); -UAC2_ATTRIBUTE(c_srate); +UAC2_ATTRIBUTE(u32, p_chmask); +UAC2_ATTRIBUTE(u32, p_srate); +UAC2_ATTRIBUTE(u32, p_ssize); +UAC2_ATTRIBUTE(u32, c_chmask); +UAC2_ATTRIBUTE(u32, c_srate); UAC2_ATTRIBUTE_SYNC(c_sync); -UAC2_ATTRIBUTE(c_ssize); -UAC2_ATTRIBUTE(req_number); -UAC2_ATTRIBUTE(fb_max); +UAC2_ATTRIBUTE(u32, c_ssize); +UAC2_ATTRIBUTE(u32, req_number); + +UAC2_ATTRIBUTE(bool, p_mute_present); +UAC2_ATTRIBUTE(bool, p_volume_present); +UAC2_ATTRIBUTE(s16, p_volume_min); +UAC2_ATTRIBUTE(s16, p_volume_max); +UAC2_ATTRIBUTE(s16, p_volume_res); + +UAC2_ATTRIBUTE(bool, c_mute_present); +UAC2_ATTRIBUTE(bool, c_volume_present); +UAC2_ATTRIBUTE(s16, c_volume_min); +UAC2_ATTRIBUTE(s16, c_volume_max); +UAC2_ATTRIBUTE(s16, c_volume_res); +UAC2_ATTRIBUTE(u32, fb_max); static struct configfs_attribute *f_uac2_attrs[] = { &f_uac2_opts_attr_p_chmask, @@ -1345,6 +1847,19 @@ static struct configfs_attribute *f_uac2_attrs[] = { &f_uac2_opts_attr_c_sync, &f_uac2_opts_attr_req_number, &f_uac2_opts_attr_fb_max, + + &f_uac2_opts_attr_p_mute_present, + &f_uac2_opts_attr_p_volume_present, + &f_uac2_opts_attr_p_volume_min, + &f_uac2_opts_attr_p_volume_max, + &f_uac2_opts_attr_p_volume_res, + + &f_uac2_opts_attr_c_mute_present, + &f_uac2_opts_attr_c_volume_present, + &f_uac2_opts_attr_c_volume_min, + &f_uac2_opts_attr_c_volume_max, + &f_uac2_opts_attr_c_volume_res, + NULL, }; @@ -1383,6 +1898,19 @@ static struct usb_function_instance *afunc_alloc_inst(void) opts->c_srate = UAC2_DEF_CSRATE; opts->c_ssize = UAC2_DEF_CSSIZE; opts->c_sync = UAC2_DEF_CSYNC; + + opts->p_mute_present = UAC2_DEF_MUTE_PRESENT; + opts->p_volume_present = UAC2_DEF_VOLUME_PRESENT; + opts->p_volume_min = UAC2_DEF_MIN_DB; + opts->p_volume_max = UAC2_DEF_MAX_DB; + opts->p_volume_res = UAC2_DEF_RES_DB; + + opts->c_mute_present = UAC2_DEF_MUTE_PRESENT; + opts->c_volume_present = UAC2_DEF_VOLUME_PRESENT; + opts->c_volume_min = UAC2_DEF_MIN_DB; + opts->c_volume_max = UAC2_DEF_MAX_DB; + opts->c_volume_res = UAC2_DEF_RES_DB; + opts->req_number = UAC2_DEF_REQ_NUM; opts->fb_max = UAC2_DEF_FB_MAX; return &opts->func_inst; @@ -1409,6 +1937,11 @@ static void afunc_unbind(struct usb_configuration *c, struct usb_function *f) usb_free_all_descriptors(f); agdev->gadget = NULL; + + kfree(out_feature_unit_desc); + out_feature_unit_desc = NULL; + kfree(in_feature_unit_desc); + in_feature_unit_desc = NULL; } static struct usb_function *afunc_alloc(struct usb_function_instance *fi) @@ -1441,3 +1974,4 @@ DECLARE_USB_FUNCTION_INIT(uac2, afunc_alloc_inst, afunc_alloc); MODULE_LICENSE("GPL"); MODULE_AUTHOR("Yadwinder Singh"); MODULE_AUTHOR("Jaswinder Singh"); +MODULE_AUTHOR("Ruslan Bilovol"); diff --git a/drivers/usb/gadget/function/u_audio.c b/drivers/usb/gadget/function/u_audio.c index 018dd0978995..f6b5b9547236 100644 --- a/drivers/usb/gadget/function/u_audio.c +++ b/drivers/usb/gadget/function/u_audio.c @@ -12,11 +12,14 @@ * Jaswinder Singh (jaswinder.singh@linaro.org) */ +#include <linux/kernel.h> #include <linux/module.h> #include <sound/core.h> #include <sound/pcm.h> #include <sound/pcm_params.h> #include <sound/control.h> +#include <sound/tlv.h> +#include <linux/usb/audio.h> #include "u_audio.h" @@ -24,6 +27,12 @@ #define PRD_SIZE_MAX PAGE_SIZE #define MIN_PERIODS 4 +enum { + UAC_FBACK_CTRL, + UAC_MUTE_CTRL, + UAC_VOLUME_CTRL, +}; + /* Runtime data params for one stream */ struct uac_rtd_params { struct snd_uac_chip *uac; /* parent chip */ @@ -43,6 +52,17 @@ struct uac_rtd_params { struct usb_request *req_fback; /* Feedback endpoint request */ bool fb_ep_enabled; /* if the ep is enabled */ + + /* Volume/Mute controls and their state */ + int fu_id; /* Feature Unit ID */ + struct snd_kcontrol *snd_kctl_volume; + struct snd_kcontrol *snd_kctl_mute; + s16 volume_min, volume_max, volume_res; + s16 volume; + int mute; + + spinlock_t lock; /* lock for control transfers */ + }; struct snd_uac_chip { @@ -597,6 +617,103 @@ void u_audio_stop_playback(struct g_audio *audio_dev) } EXPORT_SYMBOL_GPL(u_audio_stop_playback); +int u_audio_get_volume(struct g_audio *audio_dev, int playback, s16 *val) +{ + struct snd_uac_chip *uac = audio_dev->uac; + struct uac_rtd_params *prm; + unsigned long flags; + + if (playback) + prm = &uac->p_prm; + else + prm = &uac->c_prm; + + spin_lock_irqsave(&prm->lock, flags); + *val = prm->volume; + spin_unlock_irqrestore(&prm->lock, flags); + + return 0; +} +EXPORT_SYMBOL_GPL(u_audio_get_volume); + +int u_audio_set_volume(struct g_audio *audio_dev, int playback, s16 val) +{ + struct snd_uac_chip *uac = audio_dev->uac; + struct uac_rtd_params *prm; + unsigned long flags; + int change = 0; + + if (playback) + prm = &uac->p_prm; + else + prm = &uac->c_prm; + + spin_lock_irqsave(&prm->lock, flags); + val = clamp(val, prm->volume_min, prm->volume_max); + if (prm->volume != val) { + prm->volume = val; + change = 1; + } + spin_unlock_irqrestore(&prm->lock, flags); + + if (change) + snd_ctl_notify(uac->card, SNDRV_CTL_EVENT_MASK_VALUE, + &prm->snd_kctl_volume->id); + + return 0; +} +EXPORT_SYMBOL_GPL(u_audio_set_volume); + +int u_audio_get_mute(struct g_audio *audio_dev, int playback, int *val) +{ + struct snd_uac_chip *uac = audio_dev->uac; + struct uac_rtd_params *prm; + unsigned long flags; + + if (playback) + prm = &uac->p_prm; + else + prm = &uac->c_prm; + + spin_lock_irqsave(&prm->lock, flags); + *val = prm->mute; + spin_unlock_irqrestore(&prm->lock, flags); + + return 0; +} +EXPORT_SYMBOL_GPL(u_audio_get_mute); + +int u_audio_set_mute(struct g_audio *audio_dev, int playback, int val) +{ + struct snd_uac_chip *uac = audio_dev->uac; + struct uac_rtd_params *prm; + unsigned long flags; + int change = 0; + int mute; + + if (playback) + prm = &uac->p_prm; + else + prm = &uac->c_prm; + + mute = val ? 1 : 0; + + spin_lock_irqsave(&prm->lock, flags); + if (prm->mute != mute) { + prm->mute = mute; + change = 1; + } + spin_unlock_irqrestore(&prm->lock, flags); + + if (change) + snd_ctl_notify(uac->card, SNDRV_CTL_EVENT_MASK_VALUE, + &prm->snd_kctl_mute->id); + + return 0; +} +EXPORT_SYMBOL_GPL(u_audio_set_mute); + + static int u_audio_pitch_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo) { @@ -656,14 +773,158 @@ static int u_audio_pitch_put(struct snd_kcontrol *kcontrol, return change; } -static const struct snd_kcontrol_new u_audio_controls[] = { +static int u_audio_mute_info(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_info *uinfo) { - .iface = SNDRV_CTL_ELEM_IFACE_PCM, - .name = "Capture Pitch 1000000", - .info = u_audio_pitch_info, - .get = u_audio_pitch_get, - .put = u_audio_pitch_put, -}, + uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN; + uinfo->count = 1; + uinfo->value.integer.min = 0; + uinfo->value.integer.max = 1; + uinfo->value.integer.step = 1; + + return 0; +} + +static int u_audio_mute_get(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct uac_rtd_params *prm = snd_kcontrol_chip(kcontrol); + unsigned long flags; + + spin_lock_irqsave(&prm->lock, flags); + ucontrol->value.integer.value[0] = !prm->mute; + spin_unlock_irqrestore(&prm->lock, flags); + + return 0; +} + +static int u_audio_mute_put(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct uac_rtd_params *prm = snd_kcontrol_chip(kcontrol); + struct snd_uac_chip *uac = prm->uac; + struct g_audio *audio_dev = uac->audio_dev; + unsigned int val; + unsigned long flags; + int change = 0; + + val = !ucontrol->value.integer.value[0]; + + spin_lock_irqsave(&prm->lock, flags); + if (val != prm->mute) { + prm->mute = val; + change = 1; + } + spin_unlock_irqrestore(&prm->lock, flags); + + if (change && audio_dev->notify) + audio_dev->notify(audio_dev, prm->fu_id, UAC_FU_MUTE); + + return change; +} + +/* + * TLV callback for mixer volume controls + */ +static int u_audio_volume_tlv(struct snd_kcontrol *kcontrol, int op_flag, + unsigned int size, unsigned int __user *_tlv) +{ + struct uac_rtd_params *prm = snd_kcontrol_chip(kcontrol); + DECLARE_TLV_DB_MINMAX(scale, 0, 0); + + if (size < sizeof(scale)) + return -ENOMEM; + + /* UAC volume resolution is 1/256 dB, TLV is 1/100 dB */ + scale[2] = (prm->volume_min * 100) / 256; + scale[3] = (prm->volume_max * 100) / 256; + if (copy_to_user(_tlv, scale, sizeof(scale))) + return -EFAULT; + + return 0; +} + +static int u_audio_volume_info(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_info *uinfo) +{ + struct uac_rtd_params *prm = snd_kcontrol_chip(kcontrol); + + uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; + uinfo->count = 1; + uinfo->value.integer.min = 0; + uinfo->value.integer.max = + (prm->volume_max - prm->volume_min + prm->volume_res - 1) + / prm->volume_res; + uinfo->value.integer.step = 1; + + return 0; +} + +static int u_audio_volume_get(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct uac_rtd_params *prm = snd_kcontrol_chip(kcontrol); + unsigned long flags; + + spin_lock_irqsave(&prm->lock, flags); + ucontrol->value.integer.value[0] = + (prm->volume - prm->volume_min) / prm->volume_res; + spin_unlock_irqrestore(&prm->lock, flags); + + return 0; +} + +static int u_audio_volume_put(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct uac_rtd_params *prm = snd_kcontrol_chip(kcontrol); + struct snd_uac_chip *uac = prm->uac; + struct g_audio *audio_dev = uac->audio_dev; + unsigned int val; + s16 volume; + unsigned long flags; + int change = 0; + + val = ucontrol->value.integer.value[0]; + + spin_lock_irqsave(&prm->lock, flags); + volume = (val * prm->volume_res) + prm->volume_min; + volume = clamp(volume, prm->volume_min, prm->volume_max); + if (volume != prm->volume) { + prm->volume = volume; + change = 1; + } + spin_unlock_irqrestore(&prm->lock, flags); + + if (change && audio_dev->notify) + audio_dev->notify(audio_dev, prm->fu_id, UAC_FU_VOLUME); + + return change; +} + + +static struct snd_kcontrol_new u_audio_controls[] = { + [UAC_FBACK_CTRL] { + .iface = SNDRV_CTL_ELEM_IFACE_PCM, + .name = "Capture Pitch 1000000", + .info = u_audio_pitch_info, + .get = u_audio_pitch_get, + .put = u_audio_pitch_put, + }, + [UAC_MUTE_CTRL] { + .iface = SNDRV_CTL_ELEM_IFACE_MIXER, + .name = "", /* will be filled later */ + .info = u_audio_mute_info, + .get = u_audio_mute_get, + .put = u_audio_mute_put, + }, + [UAC_VOLUME_CTRL] { + .iface = SNDRV_CTL_ELEM_IFACE_MIXER, + .name = "", /* will be filled later */ + .info = u_audio_volume_info, + .get = u_audio_volume_get, + .put = u_audio_volume_put, + }, }; int g_audio_setup(struct g_audio *g_audio, const char *pcm_name, @@ -675,7 +936,7 @@ int g_audio_setup(struct g_audio *g_audio, const char *pcm_name, struct snd_kcontrol *kctl; struct uac_params *params; int p_chmask, c_chmask; - int err; + int i, err; if (!g_audio) return -EINVAL; @@ -693,7 +954,8 @@ int g_audio_setup(struct g_audio *g_audio, const char *pcm_name, if (c_chmask) { struct uac_rtd_params *prm = &uac->c_prm; - uac->c_prm.uac = uac; + spin_lock_init(&prm->lock); + uac->c_prm.uac = uac; prm->max_psize = g_audio->out_ep_maxpsize; prm->reqs = kcalloc(params->req_number, @@ -716,6 +978,7 @@ int g_audio_setup(struct g_audio *g_audio, const char *pcm_name, if (p_chmask) { struct uac_rtd_params *prm = &uac->p_prm; + spin_lock_init(&prm->lock); uac->p_prm.uac = uac; prm->max_psize = g_audio->in_ep_maxpsize; @@ -760,10 +1023,18 @@ int g_audio_setup(struct g_audio *g_audio, const char *pcm_name, snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &uac_pcm_ops); snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &uac_pcm_ops); - if (c_chmask && g_audio->in_ep_fback) { + /* + * Create mixer and controls + * Create only if it's required on USB side + */ + if ((c_chmask && g_audio->in_ep_fback) + || (p_chmask && params->p_fu.id) + || (c_chmask && params->c_fu.id)) strscpy(card->mixername, card_name, sizeof(card->driver)); - kctl = snd_ctl_new1(&u_audio_controls[0], &uac->c_prm); + if (c_chmask && g_audio->in_ep_fback) { + kctl = snd_ctl_new1(&u_audio_controls[UAC_FBACK_CTRL], + &uac->c_prm); if (!kctl) { err = -ENOMEM; goto snd_fail; @@ -777,6 +1048,82 @@ int g_audio_setup(struct g_audio *g_audio, const char *pcm_name, goto snd_fail; } + for (i = 0; i <= SNDRV_PCM_STREAM_LAST; i++) { + struct uac_rtd_params *prm; + struct uac_fu_params *fu; + char ctrl_name[24]; + char *direction; + + if (!pcm->streams[i].substream_count) + continue; + + if (i == SNDRV_PCM_STREAM_PLAYBACK) { + prm = &uac->p_prm; + fu = ¶ms->p_fu; + direction = "Playback"; + } else { + prm = &uac->c_prm; + fu = ¶ms->c_fu; + direction = "Capture"; + } + + prm->fu_id = fu->id; + + if (fu->mute_present) { + snprintf(ctrl_name, sizeof(ctrl_name), + "PCM %s Switch", direction); + + u_audio_controls[UAC_MUTE_CTRL].name = ctrl_name; + + kctl = snd_ctl_new1(&u_audio_controls[UAC_MUTE_CTRL], + prm); + if (!kctl) { + err = -ENOMEM; + goto snd_fail; + } + + kctl->id.device = pcm->device; + kctl->id.subdevice = i; + + err = snd_ctl_add(card, kctl); + if (err < 0) + goto snd_fail; + prm->snd_kctl_mute = kctl; + prm->mute = 0; + } + + if (fu->volume_present) { + snprintf(ctrl_name, sizeof(ctrl_name), + "PCM %s Volume", direction); + + u_audio_controls[UAC_VOLUME_CTRL].name = ctrl_name; + + kctl = snd_ctl_new1(&u_audio_controls[UAC_VOLUME_CTRL], + prm); + if (!kctl) { + err = -ENOMEM; + goto snd_fail; + } + + kctl->id.device = pcm->device; + kctl->id.subdevice = i; + + + kctl->tlv.c = u_audio_volume_tlv; + kctl->vd[0].access |= SNDRV_CTL_ELEM_ACCESS_TLV_READ | + SNDRV_CTL_ELEM_ACCESS_TLV_CALLBACK; + + err = snd_ctl_add(card, kctl); + if (err < 0) + goto snd_fail; + prm->snd_kctl_volume = kctl; + prm->volume = fu->volume_max; + prm->volume_max = fu->volume_max; + prm->volume_min = fu->volume_min; + prm->volume_res = fu->volume_res; + } + } + strscpy(card->driver, card_name, sizeof(card->driver)); strscpy(card->shortname, card_name, sizeof(card->shortname)); sprintf(card->longname, "%s %i", card_name, card->dev->id); diff --git a/drivers/usb/gadget/function/u_audio.h b/drivers/usb/gadget/function/u_audio.h index a218cdf771fe..001a79a46022 100644 --- a/drivers/usb/gadget/function/u_audio.h +++ b/drivers/usb/gadget/function/u_audio.h @@ -19,16 +19,30 @@ */ #define FBACK_SLOW_MAX 250 +/* Feature Unit parameters */ +struct uac_fu_params { + int id; /* Feature Unit ID */ + + bool mute_present; /* mute control enable */ + + bool volume_present; /* volume control enable */ + s16 volume_min; /* min volume in 1/256 dB */ + s16 volume_max; /* max volume in 1/256 dB */ + s16 volume_res; /* volume resolution in 1/256 dB */ +}; + struct uac_params { /* playback */ int p_chmask; /* channel mask */ int p_srate; /* rate in Hz */ int p_ssize; /* sample size */ + struct uac_fu_params p_fu; /* Feature Unit parameters */ /* capture */ int c_chmask; /* channel mask */ int c_srate; /* rate in Hz */ int c_ssize; /* sample size */ + struct uac_fu_params c_fu; /* Feature Unit parameters */ int req_number; /* number of preallocated requests */ int fb_max; /* upper frequency drift feedback limit per-mil */ @@ -49,6 +63,9 @@ struct g_audio { /* Max packet size for all out_ep possible speeds */ unsigned int out_ep_maxpsize; + /* Notify UAC driver about control change */ + int (*notify)(struct g_audio *g_audio, int unit_id, int cs); + /* The ALSA Sound Card it represents on the USB-Client side */ struct snd_uac_chip *uac; @@ -94,4 +111,9 @@ void u_audio_stop_capture(struct g_audio *g_audio); int u_audio_start_playback(struct g_audio *g_audio); void u_audio_stop_playback(struct g_audio *g_audio); +int u_audio_get_volume(struct g_audio *g_audio, int playback, s16 *val); +int u_audio_set_volume(struct g_audio *g_audio, int playback, s16 val); +int u_audio_get_mute(struct g_audio *g_audio, int playback, int *val); +int u_audio_set_mute(struct g_audio *g_audio, int playback, int val); + #endif /* __U_AUDIO_H */ diff --git a/drivers/usb/gadget/function/u_ether.c b/drivers/usb/gadget/function/u_ether.c index d1d044d9f859..85a3f6d4b5af 100644 --- a/drivers/usb/gadget/function/u_ether.c +++ b/drivers/usb/gadget/function/u_ether.c @@ -492,8 +492,9 @@ static netdev_tx_t eth_start_xmit(struct sk_buff *skb, } spin_unlock_irqrestore(&dev->lock, flags); - if (skb && !in) { - dev_kfree_skb_any(skb); + if (!in) { + if (skb) + dev_kfree_skb_any(skb); return NETDEV_TX_OK; } diff --git a/drivers/usb/gadget/function/u_uac1.h b/drivers/usb/gadget/function/u_uac1.h index 39c0e29e1b46..589fae861141 100644 --- a/drivers/usb/gadget/function/u_uac1.h +++ b/drivers/usb/gadget/function/u_uac1.h @@ -18,6 +18,13 @@ #define UAC1_DEF_PSRATE 48000 #define UAC1_DEF_PSSIZE 2 #define UAC1_DEF_REQ_NUM 2 +#define UAC1_DEF_INT_REQ_NUM 10 + +#define UAC1_DEF_MUTE_PRESENT 1 +#define UAC1_DEF_VOLUME_PRESENT 1 +#define UAC1_DEF_MIN_DB (-100*256) /* -100 dB */ +#define UAC1_DEF_MAX_DB 0 /* 0 dB */ +#define UAC1_DEF_RES_DB (1*256) /* 1 dB */ struct f_uac1_opts { @@ -28,6 +35,19 @@ struct f_uac1_opts { int p_chmask; int p_srate; int p_ssize; + + bool p_mute_present; + bool p_volume_present; + s16 p_volume_min; + s16 p_volume_max; + s16 p_volume_res; + + bool c_mute_present; + bool c_volume_present; + s16 c_volume_min; + s16 c_volume_max; + s16 c_volume_res; + int req_number; unsigned bound:1; diff --git a/drivers/usb/gadget/function/u_uac2.h b/drivers/usb/gadget/function/u_uac2.h index 179d3ef6a195..a73b35774c44 100644 --- a/drivers/usb/gadget/function/u_uac2.h +++ b/drivers/usb/gadget/function/u_uac2.h @@ -22,8 +22,16 @@ #define UAC2_DEF_CSRATE 64000 #define UAC2_DEF_CSSIZE 2 #define UAC2_DEF_CSYNC USB_ENDPOINT_SYNC_ASYNC + +#define UAC2_DEF_MUTE_PRESENT 1 +#define UAC2_DEF_VOLUME_PRESENT 1 +#define UAC2_DEF_MIN_DB (-100*256) /* -100 dB */ +#define UAC2_DEF_MAX_DB 0 /* 0 dB */ +#define UAC2_DEF_RES_DB (1*256) /* 1 dB */ + #define UAC2_DEF_REQ_NUM 2 #define UAC2_DEF_FB_MAX 5 +#define UAC2_DEF_INT_REQ_NUM 10 struct f_uac2_opts { struct usb_function_instance func_inst; @@ -34,9 +42,22 @@ struct f_uac2_opts { int c_srate; int c_ssize; int c_sync; + + bool p_mute_present; + bool p_volume_present; + s16 p_volume_min; + s16 p_volume_max; + s16 p_volume_res; + + bool c_mute_present; + bool c_volume_present; + s16 c_volume_min; + s16 c_volume_max; + s16 c_volume_res; + int req_number; int fb_max; - bool bound; + bool bound; struct mutex lock; int refcnt; diff --git a/drivers/usb/gadget/udc/core.c b/drivers/usb/gadget/udc/core.c index b7f0b1ebaaa8..14fdf918ecfe 100644 --- a/drivers/usb/gadget/udc/core.c +++ b/drivers/usb/gadget/udc/core.c @@ -1003,6 +1003,25 @@ int usb_gadget_ep_match_desc(struct usb_gadget *gadget, } EXPORT_SYMBOL_GPL(usb_gadget_ep_match_desc); +/** + * usb_gadget_check_config - checks if the UDC can support the binded + * configuration + * @gadget: controller to check the USB configuration + * + * Ensure that a UDC is able to support the requested resources by a + * configuration, and that there are no resource limitations, such as + * internal memory allocated to all requested endpoints. + * + * Returns zero on success, else a negative errno. + */ +int usb_gadget_check_config(struct usb_gadget *gadget) +{ + if (gadget->ops->check_config) + return gadget->ops->check_config(gadget); + return 0; +} +EXPORT_SYMBOL_GPL(usb_gadget_check_config); + /* ------------------------------------------------------------------------- */ static void usb_gadget_state_work(struct work_struct *work) diff --git a/drivers/usb/host/ehci-mv.c b/drivers/usb/host/ehci-mv.c index cffdc8d01b2a..8fd27249ad25 100644 --- a/drivers/usb/host/ehci-mv.c +++ b/drivers/usb/host/ehci-mv.c @@ -42,26 +42,25 @@ struct ehci_hcd_mv { int (*set_vbus)(unsigned int vbus); }; -static void ehci_clock_enable(struct ehci_hcd_mv *ehci_mv) +static int mv_ehci_enable(struct ehci_hcd_mv *ehci_mv) { - clk_prepare_enable(ehci_mv->clk); -} + int retval; -static void ehci_clock_disable(struct ehci_hcd_mv *ehci_mv) -{ - clk_disable_unprepare(ehci_mv->clk); -} + retval = clk_prepare_enable(ehci_mv->clk); + if (retval) + return retval; -static int mv_ehci_enable(struct ehci_hcd_mv *ehci_mv) -{ - ehci_clock_enable(ehci_mv); - return phy_init(ehci_mv->phy); + retval = phy_init(ehci_mv->phy); + if (retval) + clk_disable_unprepare(ehci_mv->clk); + + return retval; } static void mv_ehci_disable(struct ehci_hcd_mv *ehci_mv) { phy_exit(ehci_mv->phy); - ehci_clock_disable(ehci_mv); + clk_disable_unprepare(ehci_mv->clk); } static int mv_ehci_reset(struct usb_hcd *hcd) diff --git a/drivers/usb/host/fotg210-hcd.c b/drivers/usb/host/fotg210-hcd.c index 05fb8d97cf02..4b02ace09f3d 100644 --- a/drivers/usb/host/fotg210-hcd.c +++ b/drivers/usb/host/fotg210-hcd.c @@ -1858,9 +1858,11 @@ static struct fotg210_qh *fotg210_qh_alloc(struct fotg210_hcd *fotg210, qh = kzalloc(sizeof(*qh), GFP_ATOMIC); if (!qh) goto done; - qh->hw = dma_pool_zalloc(fotg210->qh_pool, flags, &dma); + qh->hw = (struct fotg210_qh_hw *) + dma_pool_alloc(fotg210->qh_pool, flags, &dma); if (!qh->hw) goto fail; + memset(qh->hw, 0, sizeof(*qh->hw)); qh->qh_dma = dma; INIT_LIST_HEAD(&qh->qtd_list); @@ -2510,11 +2512,6 @@ retry_xacterr: return count; } -/* high bandwidth multiplier, as encoded in highspeed endpoint descriptors */ -#define hb_mult(wMaxPacketSize) (1 + (((wMaxPacketSize) >> 11) & 0x03)) -/* ... and packet size, for any kind of endpoint descriptor */ -#define max_packet(wMaxPacketSize) ((wMaxPacketSize) & 0x07ff) - /* reverse of qh_urb_transaction: free a list of TDs. * used for cleanup after errors, before HC sees an URB's TDs. */ @@ -2600,7 +2597,7 @@ static struct list_head *qh_urb_transaction(struct fotg210_hcd *fotg210, token |= (1 /* "in" */ << 8); /* else it's already initted to "out" pid (0 << 8) */ - maxpacket = max_packet(usb_maxpacket(urb->dev, urb->pipe, !is_input)); + maxpacket = usb_maxpacket(urb->dev, urb->pipe, !is_input); /* * buffer gets wrapped in one or more qtds; @@ -2714,9 +2711,11 @@ static struct fotg210_qh *qh_make(struct fotg210_hcd *fotg210, struct urb *urb, gfp_t flags) { struct fotg210_qh *qh = fotg210_qh_alloc(fotg210, flags); + struct usb_host_endpoint *ep; u32 info1 = 0, info2 = 0; int is_input, type; int maxp = 0; + int mult; struct usb_tt *tt = urb->dev->tt; struct fotg210_qh_hw *hw; @@ -2731,14 +2730,15 @@ static struct fotg210_qh *qh_make(struct fotg210_hcd *fotg210, struct urb *urb, is_input = usb_pipein(urb->pipe); type = usb_pipetype(urb->pipe); - maxp = usb_maxpacket(urb->dev, urb->pipe, !is_input); + ep = usb_pipe_endpoint(urb->dev, urb->pipe); + maxp = usb_endpoint_maxp(&ep->desc); + mult = usb_endpoint_maxp_mult(&ep->desc); /* 1024 byte maxpacket is a hardware ceiling. High bandwidth * acts like up to 3KB, but is built from smaller packets. */ - if (max_packet(maxp) > 1024) { - fotg210_dbg(fotg210, "bogus qh maxpacket %d\n", - max_packet(maxp)); + if (maxp > 1024) { + fotg210_dbg(fotg210, "bogus qh maxpacket %d\n", maxp); goto done; } @@ -2752,8 +2752,7 @@ static struct fotg210_qh *qh_make(struct fotg210_hcd *fotg210, struct urb *urb, */ if (type == PIPE_INTERRUPT) { qh->usecs = NS_TO_US(usb_calc_bus_time(USB_SPEED_HIGH, - is_input, 0, - hb_mult(maxp) * max_packet(maxp))); + is_input, 0, mult * maxp)); qh->start = NO_FRAME; if (urb->dev->speed == USB_SPEED_HIGH) { @@ -2790,7 +2789,7 @@ static struct fotg210_qh *qh_make(struct fotg210_hcd *fotg210, struct urb *urb, think_time = tt ? tt->think_time : 0; qh->tt_usecs = NS_TO_US(think_time + usb_calc_bus_time(urb->dev->speed, - is_input, 0, max_packet(maxp))); + is_input, 0, maxp)); qh->period = urb->interval; if (qh->period > fotg210->periodic_size) { qh->period = fotg210->periodic_size; @@ -2853,11 +2852,11 @@ static struct fotg210_qh *qh_make(struct fotg210_hcd *fotg210, struct urb *urb, * to help them do so. So now people expect to use * such nonconformant devices with Linux too; sigh. */ - info1 |= max_packet(maxp) << 16; + info1 |= maxp << 16; info2 |= (FOTG210_TUNE_MULT_HS << 30); } else { /* PIPE_INTERRUPT */ - info1 |= max_packet(maxp) << 16; - info2 |= hb_mult(maxp) << 30; + info1 |= maxp << 16; + info2 |= mult << 30; } break; default: @@ -3927,6 +3926,7 @@ static void iso_stream_init(struct fotg210_hcd *fotg210, int is_input; long bandwidth; unsigned multi; + struct usb_host_endpoint *ep; /* * this might be a "high bandwidth" highspeed endpoint, @@ -3934,14 +3934,14 @@ static void iso_stream_init(struct fotg210_hcd *fotg210, */ epnum = usb_pipeendpoint(pipe); is_input = usb_pipein(pipe) ? USB_DIR_IN : 0; - maxp = usb_maxpacket(dev, pipe, !is_input); + ep = usb_pipe_endpoint(dev, pipe); + maxp = usb_endpoint_maxp(&ep->desc); if (is_input) buf1 = (1 << 11); else buf1 = 0; - maxp = max_packet(maxp); - multi = hb_mult(maxp); + multi = usb_endpoint_maxp_mult(&ep->desc); buf1 |= maxp; maxp *= multi; @@ -4112,7 +4112,7 @@ static int itd_urb_transaction(struct fotg210_iso_stream *stream, } else { alloc_itd: spin_unlock_irqrestore(&fotg210->lock, flags); - itd = dma_pool_zalloc(fotg210->itd_pool, mem_flags, + itd = dma_pool_alloc(fotg210->itd_pool, mem_flags, &itd_dma); spin_lock_irqsave(&fotg210->lock, flags); if (!itd) { @@ -4122,6 +4122,7 @@ alloc_itd: } } + memset(itd, 0, sizeof(*itd)); itd->itd_dma = itd_dma; list_add(&itd->itd_list, &sched->td_list); } @@ -4462,13 +4463,12 @@ static bool itd_complete(struct fotg210_hcd *fotg210, struct fotg210_itd *itd) /* HC need not update length with this error */ if (!(t & FOTG210_ISOC_BABBLE)) { - desc->actual_length = - fotg210_itdlen(urb, desc, t); + desc->actual_length = FOTG210_ITD_LENGTH(t); urb->actual_length += desc->actual_length; } } else if (likely((t & FOTG210_ISOC_ACTIVE) == 0)) { desc->status = 0; - desc->actual_length = fotg210_itdlen(urb, desc, t); + desc->actual_length = FOTG210_ITD_LENGTH(t); urb->actual_length += desc->actual_length; } else { /* URB was too late */ diff --git a/drivers/usb/host/fotg210.h b/drivers/usb/host/fotg210.h index 0a91061a0551..0781442b7a24 100644 --- a/drivers/usb/host/fotg210.h +++ b/drivers/usb/host/fotg210.h @@ -683,11 +683,6 @@ static inline unsigned fotg210_read_frame_index(struct fotg210_hcd *fotg210) return fotg210_readl(fotg210, &fotg210->regs->frame_index); } -#define fotg210_itdlen(urb, desc, t) ({ \ - usb_pipein((urb)->pipe) ? \ - (desc)->length - FOTG210_ITD_LENGTH(t) : \ - FOTG210_ITD_LENGTH(t); \ -}) /*-------------------------------------------------------------------------*/ #endif /* __LINUX_FOTG210_H */ diff --git a/drivers/usb/host/ohci-spear.c b/drivers/usb/host/ohci-spear.c index 5cc05449281c..b4cd9e6c72fd 100644 --- a/drivers/usb/host/ohci-spear.c +++ b/drivers/usb/host/ohci-spear.c @@ -84,7 +84,7 @@ static int spear_ohci_hcd_drv_probe(struct platform_device *pdev) clk_prepare_enable(sohci_p->clk); - retval = usb_add_hcd(hcd, platform_get_irq(pdev, 0), 0); + retval = usb_add_hcd(hcd, irq, 0); if (retval == 0) { device_wakeup_enable(hcd->self.controller); return retval; diff --git a/drivers/usb/host/xhci-pci-renesas.c b/drivers/usb/host/xhci-pci-renesas.c index 5923844ed821..aa88e57649a9 100644 --- a/drivers/usb/host/xhci-pci-renesas.c +++ b/drivers/usb/host/xhci-pci-renesas.c @@ -595,7 +595,7 @@ int renesas_xhci_check_request_fw(struct pci_dev *pdev, err = renesas_fw_check_running(pdev); /* Continue ahead, if the firmware is already running. */ - if (err == 0) + if (!err) return 0; if (err != 1) @@ -620,9 +620,4 @@ exit: } EXPORT_SYMBOL_GPL(renesas_xhci_check_request_fw); -void renesas_xhci_pci_exit(struct pci_dev *dev) -{ -} -EXPORT_SYMBOL_GPL(renesas_xhci_pci_exit); - MODULE_LICENSE("GPL v2"); diff --git a/drivers/usb/host/xhci-pci.c b/drivers/usb/host/xhci-pci.c index 1c9a7957c45c..2c9f25ca8edd 100644 --- a/drivers/usb/host/xhci-pci.c +++ b/drivers/usb/host/xhci-pci.c @@ -449,8 +449,6 @@ static void xhci_pci_remove(struct pci_dev *dev) struct xhci_hcd *xhci; xhci = hcd_to_xhci(pci_get_drvdata(dev)); - if (xhci->quirks & XHCI_RENESAS_FW_QUIRK) - renesas_xhci_pci_exit(dev); xhci->xhc_state |= XHCI_STATE_REMOVING; diff --git a/drivers/usb/host/xhci-pci.h b/drivers/usb/host/xhci-pci.h index acd7cf0a1706..cb9a8f331a44 100644 --- a/drivers/usb/host/xhci-pci.h +++ b/drivers/usb/host/xhci-pci.h @@ -7,7 +7,6 @@ #if IS_ENABLED(CONFIG_USB_XHCI_PCI_RENESAS) int renesas_xhci_check_request_fw(struct pci_dev *dev, const struct pci_device_id *id); -void renesas_xhci_pci_exit(struct pci_dev *dev); #else static int renesas_xhci_check_request_fw(struct pci_dev *dev, @@ -16,8 +15,6 @@ static int renesas_xhci_check_request_fw(struct pci_dev *dev, return 0; } -static void renesas_xhci_pci_exit(struct pci_dev *dev) { }; - #endif struct xhci_driver_data { diff --git a/drivers/usb/phy/phy-isp1301-omap.c b/drivers/usb/phy/phy-isp1301-omap.c index f3e9b3b6ac3e..190699b38b41 100644 --- a/drivers/usb/phy/phy-isp1301-omap.c +++ b/drivers/usb/phy/phy-isp1301-omap.c @@ -12,7 +12,7 @@ #include <linux/slab.h> #include <linux/interrupt.h> #include <linux/platform_device.h> -#include <linux/gpio.h> +#include <linux/gpio/consumer.h> #include <linux/usb/ch9.h> #include <linux/usb/gadget.h> #include <linux/usb.h> |