static int dwc3_remove(struct platform_device *pdev) { struct dwc3 *dwc = platform_get_drvdata(pdev); struct resource *res = platform_get_resource(pdev, IORESOURCE_MEM, 0); pm_runtime_get_sync(&pdev->dev); /* * restore res->start back to its original value so that, in case the * probe is deferred, we don't end up getting error in request the * memory region the next time probe is called. */ res->start -= DWC3_GLOBALS_REGS_START; dwc3_debugfs_exit(dwc); dwc3_core_exit_mode(dwc); dwc3_core_exit(dwc); dwc3_ulpi_exit(dwc); pm_runtime_put_sync(&pdev->dev); pm_runtime_allow(&pdev->dev); pm_runtime_disable(&pdev->dev); dwc3_free_event_buffers(dwc); dwc3_free_scratch_buffers(dwc); return 0; }
static int dwc3_remove(struct platform_device *pdev) { struct dwc3 *dwc = platform_get_drvdata(pdev); dwc3_debugfs_exit(dwc); dwc3_core_exit_mode(dwc); dwc3_event_buffers_cleanup(dwc); dwc3_free_event_buffers(dwc); usb_phy_set_suspend(dwc->usb2_phy, 1); usb_phy_set_suspend(dwc->usb3_phy, 1); phy_power_off(dwc->usb2_generic_phy); phy_power_off(dwc->usb3_generic_phy); dwc3_core_exit(dwc); pm_runtime_put_sync(&pdev->dev); pm_runtime_disable(&pdev->dev); return 0; }
static int dwc3_remove(struct platform_device *pdev) { struct dwc3 *dwc = platform_get_drvdata(pdev); pm_runtime_get_sync(&pdev->dev); dwc3_debugfs_exit(dwc); dwc3_core_exit_mode(dwc); dwc3_event_buffers_cleanup(dwc); dwc3_core_exit(dwc); dwc3_ulpi_exit(dwc); pm_runtime_put_sync(&pdev->dev); pm_runtime_allow(&pdev->dev); pm_runtime_disable(&pdev->dev); dwc3_free_event_buffers(dwc); dwc3_free_scratch_buffers(dwc); clk_bulk_put(dwc->num_clks, dwc->clks); return 0; }
static int dwc3_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; struct dwc3_platform_data *pdata = dev_get_platdata(dev); struct resource *res; struct dwc3 *dwc; u8 lpm_nyet_threshold; u8 tx_de_emphasis; u8 hird_threshold; u32 fladj = 0; int ret; void __iomem *regs; void *mem; mem = devm_kzalloc(dev, sizeof(*dwc) + DWC3_ALIGN_MASK, GFP_KERNEL); if (!mem) return -ENOMEM; dwc = PTR_ALIGN(mem, DWC3_ALIGN_MASK + 1); dwc->mem = mem; dwc->dev = dev; res = platform_get_resource(pdev, IORESOURCE_IRQ, 0); if (!res) { dev_err(dev, "missing IRQ\n"); return -ENODEV; } dwc->xhci_resources[1].start = res->start; dwc->xhci_resources[1].end = res->end; dwc->xhci_resources[1].flags = res->flags; dwc->xhci_resources[1].name = res->name; res = platform_get_resource(pdev, IORESOURCE_MEM, 0); if (!res) { dev_err(dev, "missing memory resource\n"); return -ENODEV; } dwc->xhci_resources[0].start = res->start; dwc->xhci_resources[0].end = dwc->xhci_resources[0].start + DWC3_XHCI_REGS_END; dwc->xhci_resources[0].flags = res->flags; dwc->xhci_resources[0].name = res->name; res->start += DWC3_GLOBALS_REGS_START; /* * Request memory region but exclude xHCI regs, * since it will be requested by the xhci-plat driver. */ regs = devm_ioremap_resource(dev, res); if (IS_ERR(regs)) { ret = PTR_ERR(regs); goto err0; } dwc->regs = regs; dwc->regs_size = resource_size(res); /* default to highest possible threshold */ lpm_nyet_threshold = 0xff; /* default to -3.5dB de-emphasis */ tx_de_emphasis = 1; /* * default to assert utmi_sleep_n and use maximum allowed HIRD * threshold value of 0b1100 */ hird_threshold = 12; dwc->maximum_speed = usb_get_maximum_speed(dev); dwc->dr_mode = usb_get_dr_mode(dev); dwc->has_lpm_erratum = device_property_read_bool(dev, "snps,has-lpm-erratum"); device_property_read_u8(dev, "snps,lpm-nyet-threshold", &lpm_nyet_threshold); dwc->is_utmi_l1_suspend = device_property_read_bool(dev, "snps,is-utmi-l1-suspend"); device_property_read_u8(dev, "snps,hird-threshold", &hird_threshold); dwc->usb3_lpm_capable = device_property_read_bool(dev, "snps,usb3_lpm_capable"); dwc->needs_fifo_resize = device_property_read_bool(dev, "tx-fifo-resize"); dwc->disable_scramble_quirk = device_property_read_bool(dev, "snps,disable_scramble_quirk"); dwc->u2exit_lfps_quirk = device_property_read_bool(dev, "snps,u2exit_lfps_quirk"); dwc->u2ss_inp3_quirk = device_property_read_bool(dev, "snps,u2ss_inp3_quirk"); dwc->req_p1p2p3_quirk = device_property_read_bool(dev, "snps,req_p1p2p3_quirk"); dwc->del_p1p2p3_quirk = device_property_read_bool(dev, "snps,del_p1p2p3_quirk"); dwc->del_phy_power_chg_quirk = device_property_read_bool(dev, "snps,del_phy_power_chg_quirk"); dwc->lfps_filter_quirk = device_property_read_bool(dev, "snps,lfps_filter_quirk"); dwc->rx_detect_poll_quirk = device_property_read_bool(dev, "snps,rx_detect_poll_quirk"); dwc->dis_u3_susphy_quirk = device_property_read_bool(dev, "snps,dis_u3_susphy_quirk"); dwc->dis_u2_susphy_quirk = device_property_read_bool(dev, "snps,dis_u2_susphy_quirk"); dwc->dis_enblslpm_quirk = device_property_read_bool(dev, "snps,dis_enblslpm_quirk"); dwc->tx_de_emphasis_quirk = device_property_read_bool(dev, "snps,tx_de_emphasis_quirk"); device_property_read_u8(dev, "snps,tx_de_emphasis", &tx_de_emphasis); device_property_read_string(dev, "snps,hsphy_interface", &dwc->hsphy_interface); device_property_read_u32(dev, "snps,quirk-frame-length-adjustment", &fladj); if (pdata) { dwc->maximum_speed = pdata->maximum_speed; dwc->has_lpm_erratum = pdata->has_lpm_erratum; if (pdata->lpm_nyet_threshold) lpm_nyet_threshold = pdata->lpm_nyet_threshold; dwc->is_utmi_l1_suspend = pdata->is_utmi_l1_suspend; if (pdata->hird_threshold) hird_threshold = pdata->hird_threshold; dwc->needs_fifo_resize = pdata->tx_fifo_resize; dwc->usb3_lpm_capable = pdata->usb3_lpm_capable; dwc->dr_mode = pdata->dr_mode; dwc->disable_scramble_quirk = pdata->disable_scramble_quirk; dwc->u2exit_lfps_quirk = pdata->u2exit_lfps_quirk; dwc->u2ss_inp3_quirk = pdata->u2ss_inp3_quirk; dwc->req_p1p2p3_quirk = pdata->req_p1p2p3_quirk; dwc->del_p1p2p3_quirk = pdata->del_p1p2p3_quirk; dwc->del_phy_power_chg_quirk = pdata->del_phy_power_chg_quirk; dwc->lfps_filter_quirk = pdata->lfps_filter_quirk; dwc->rx_detect_poll_quirk = pdata->rx_detect_poll_quirk; dwc->dis_u3_susphy_quirk = pdata->dis_u3_susphy_quirk; dwc->dis_u2_susphy_quirk = pdata->dis_u2_susphy_quirk; dwc->dis_enblslpm_quirk = pdata->dis_enblslpm_quirk; dwc->tx_de_emphasis_quirk = pdata->tx_de_emphasis_quirk; if (pdata->tx_de_emphasis) tx_de_emphasis = pdata->tx_de_emphasis; dwc->hsphy_interface = pdata->hsphy_interface; fladj = pdata->fladj_value; } dwc->lpm_nyet_threshold = lpm_nyet_threshold; dwc->tx_de_emphasis = tx_de_emphasis; dwc->hird_threshold = hird_threshold | (dwc->is_utmi_l1_suspend << 4); platform_set_drvdata(pdev, dwc); dwc3_cache_hwparams(dwc); ret = dwc3_phy_setup(dwc); if (ret) goto err0; ret = dwc3_core_get_phy(dwc); if (ret) goto err0; spin_lock_init(&dwc->lock); if (!dev->dma_mask) { dev->dma_mask = dev->parent->dma_mask; dev->dma_parms = dev->parent->dma_parms; dma_set_coherent_mask(dev, dev->parent->coherent_dma_mask); } pm_runtime_enable(dev); pm_runtime_get_sync(dev); pm_runtime_forbid(dev); ret = dwc3_alloc_event_buffers(dwc, DWC3_EVENT_BUFFERS_SIZE); if (ret) { dev_err(dwc->dev, "failed to allocate event buffers\n"); ret = -ENOMEM; goto err1; } if (IS_ENABLED(CONFIG_USB_DWC3_HOST)) dwc->dr_mode = USB_DR_MODE_HOST; else if (IS_ENABLED(CONFIG_USB_DWC3_GADGET)) dwc->dr_mode = USB_DR_MODE_PERIPHERAL; if (dwc->dr_mode == USB_DR_MODE_UNKNOWN) dwc->dr_mode = USB_DR_MODE_OTG; ret = dwc3_core_init(dwc); if (ret) { dev_err(dev, "failed to initialize core\n"); goto err1; } /* Check the maximum_speed parameter */ switch (dwc->maximum_speed) { case USB_SPEED_LOW: case USB_SPEED_FULL: case USB_SPEED_HIGH: case USB_SPEED_SUPER: case USB_SPEED_SUPER_PLUS: break; default: dev_err(dev, "invalid maximum_speed parameter %d\n", dwc->maximum_speed); /* fall through */ case USB_SPEED_UNKNOWN: /* default to superspeed */ dwc->maximum_speed = USB_SPEED_SUPER; /* * default to superspeed plus if we are capable. */ if (dwc3_is_usb31(dwc) && (DWC3_GHWPARAMS3_SSPHY_IFC(dwc->hwparams.hwparams3) == DWC3_GHWPARAMS3_SSPHY_IFC_GEN2)) dwc->maximum_speed = USB_SPEED_SUPER_PLUS; break; } /* Adjust Frame Length */ dwc3_frame_length_adjustment(dwc, fladj); usb_phy_set_suspend(dwc->usb2_phy, 0); usb_phy_set_suspend(dwc->usb3_phy, 0); ret = phy_power_on(dwc->usb2_generic_phy); if (ret < 0) goto err2; ret = phy_power_on(dwc->usb3_generic_phy); if (ret < 0) goto err3; ret = dwc3_event_buffers_setup(dwc); if (ret) { dev_err(dwc->dev, "failed to setup event buffers\n"); goto err4; } ret = dwc3_core_init_mode(dwc); if (ret) goto err5; ret = dwc3_debugfs_init(dwc); if (ret) { dev_err(dev, "failed to initialize debugfs\n"); goto err6; } pm_runtime_allow(dev); return 0; err6: dwc3_core_exit_mode(dwc); err5: dwc3_event_buffers_cleanup(dwc); err4: phy_power_off(dwc->usb3_generic_phy); err3: phy_power_off(dwc->usb2_generic_phy); err2: usb_phy_set_suspend(dwc->usb2_phy, 1); usb_phy_set_suspend(dwc->usb3_phy, 1); dwc3_core_exit(dwc); err1: dwc3_free_event_buffers(dwc); dwc3_ulpi_exit(dwc); err0: /* * restore res->start back to its original value so that, in case the * probe is deferred, we don't end up getting error in request the * memory region the next time probe is called. */ res->start -= DWC3_GLOBALS_REGS_START; return ret; }
static int dwc3_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; struct dwc3_platform_data *pdata = dev_get_platdata(dev); struct device_node *node = dev->of_node; struct resource *res; struct dwc3 *dwc; int ret; void __iomem *regs; void *mem; mem = devm_kzalloc(dev, sizeof(*dwc) + DWC3_ALIGN_MASK, GFP_KERNEL); if (!mem) { dev_err(dev, "not enough memory\n"); return -ENOMEM; } dwc = PTR_ALIGN(mem, DWC3_ALIGN_MASK + 1); dwc->mem = mem; dwc->dev = dev; res = platform_get_resource(pdev, IORESOURCE_IRQ, 0); if (!res) { dev_err(dev, "missing IRQ\n"); return -ENODEV; } dwc->xhci_resources[1].start = res->start; dwc->xhci_resources[1].end = res->end; dwc->xhci_resources[1].flags = res->flags; dwc->xhci_resources[1].name = res->name; res = platform_get_resource(pdev, IORESOURCE_MEM, 0); if (!res) { dev_err(dev, "missing memory resource\n"); return -ENODEV; } dwc->xhci_resources[0].start = res->start; dwc->xhci_resources[0].end = dwc->xhci_resources[0].start + DWC3_XHCI_REGS_END; dwc->xhci_resources[0].flags = res->flags; dwc->xhci_resources[0].name = res->name; res->start += DWC3_GLOBALS_REGS_START; /* * Request memory region but exclude xHCI regs, * since it will be requested by the xhci-plat driver. */ regs = devm_ioremap_resource(dev, res); if (IS_ERR(regs)) return PTR_ERR(regs); dwc->regs = regs; dwc->regs_size = resource_size(res); /* * restore res->start back to its original value so that, * in case the probe is deferred, we don't end up getting error in * request the memory region the next time probe is called. */ res->start -= DWC3_GLOBALS_REGS_START; if (node) { dwc->maximum_speed = of_usb_get_maximum_speed(node); dwc->needs_fifo_resize = of_property_read_bool(node, "tx-fifo-resize"); dwc->dr_mode = of_usb_get_dr_mode(node); } else if (pdata) { dwc->maximum_speed = pdata->maximum_speed; dwc->needs_fifo_resize = pdata->tx_fifo_resize; dwc->dr_mode = pdata->dr_mode; } /* default to superspeed if no maximum_speed passed */ if (dwc->maximum_speed == USB_SPEED_UNKNOWN) dwc->maximum_speed = USB_SPEED_SUPER; ret = dwc3_core_get_phy(dwc); if (ret) return ret; spin_lock_init(&dwc->lock); platform_set_drvdata(pdev, dwc); dev->dma_mask = dev->parent->dma_mask; dev->dma_parms = dev->parent->dma_parms; dma_set_coherent_mask(dev, dev->parent->coherent_dma_mask); pm_runtime_enable(dev); pm_runtime_get_sync(dev); pm_runtime_forbid(dev); dwc3_cache_hwparams(dwc); ret = dwc3_alloc_event_buffers(dwc, DWC3_EVENT_BUFFERS_SIZE); if (ret) { dev_err(dwc->dev, "failed to allocate event buffers\n"); ret = -ENOMEM; goto err0; } if (IS_ENABLED(CONFIG_USB_DWC3_HOST)) dwc->dr_mode = USB_DR_MODE_HOST; else if (IS_ENABLED(CONFIG_USB_DWC3_GADGET)) dwc->dr_mode = USB_DR_MODE_PERIPHERAL; if (dwc->dr_mode == USB_DR_MODE_UNKNOWN) dwc->dr_mode = USB_DR_MODE_OTG; ret = dwc3_core_init(dwc); if (ret) { dev_err(dev, "failed to initialize core\n"); goto err0; } usb_phy_set_suspend(dwc->usb2_phy, 0); usb_phy_set_suspend(dwc->usb3_phy, 0); ret = phy_power_on(dwc->usb2_generic_phy); if (ret < 0) goto err1; ret = phy_power_on(dwc->usb3_generic_phy); if (ret < 0) goto err_usb2phy_power; ret = dwc3_event_buffers_setup(dwc); if (ret) { dev_err(dwc->dev, "failed to setup event buffers\n"); goto err_usb3phy_power; } ret = dwc3_core_init_mode(dwc); if (ret) goto err2; ret = dwc3_debugfs_init(dwc); if (ret) { dev_err(dev, "failed to initialize debugfs\n"); goto err3; } pm_runtime_allow(dev); return 0; err3: dwc3_core_exit_mode(dwc); err2: dwc3_event_buffers_cleanup(dwc); err_usb3phy_power: phy_power_off(dwc->usb3_generic_phy); err_usb2phy_power: phy_power_off(dwc->usb2_generic_phy); err1: usb_phy_set_suspend(dwc->usb2_phy, 1); usb_phy_set_suspend(dwc->usb3_phy, 1); dwc3_core_exit(dwc); err0: dwc3_free_event_buffers(dwc); return ret; }