diff options
Diffstat (limited to 'drivers/usb')
-rw-r--r-- | drivers/usb/Kconfig | 2 | ||||
-rw-r--r-- | drivers/usb/Makefile | 2 | ||||
-rw-r--r-- | drivers/usb/cdns3/Kconfig | 44 | ||||
-rw-r--r-- | drivers/usb/cdns3/Makefile | 14 | ||||
-rw-r--r-- | drivers/usb/cdns3/cdns3-pci-wrap.c | 157 | ||||
-rw-r--r-- | drivers/usb/cdns3/core.c | 543 | ||||
-rw-r--r-- | drivers/usb/cdns3/core.h | 121 | ||||
-rw-r--r-- | drivers/usb/cdns3/debug.h | 173 | ||||
-rw-r--r-- | drivers/usb/cdns3/debugfs.c | 153 | ||||
-rw-r--r-- | drivers/usb/cdns3/drd.c | 379 | ||||
-rw-r--r-- | drivers/usb/cdns3/drd.h | 166 | ||||
-rw-r--r-- | drivers/usb/cdns3/ep0.c | 920 | ||||
-rw-r--r-- | drivers/usb/cdns3/gadget-export.h | 28 | ||||
-rw-r--r-- | drivers/usb/cdns3/gadget.c | 2319 | ||||
-rw-r--r-- | drivers/usb/cdns3/gadget.h | 1321 | ||||
-rw-r--r-- | drivers/usb/cdns3/host-export.h | 28 | ||||
-rw-r--r-- | drivers/usb/cdns3/host.c | 76 | ||||
-rw-r--r-- | drivers/usb/cdns3/trace.c | 23 | ||||
-rw-r--r-- | drivers/usb/cdns3/trace.h | 447 |
19 files changed, 0 insertions, 6916 deletions
diff --git a/drivers/usb/Kconfig b/drivers/usb/Kconfig index 42a5b1ac5aea..94573fb68304 100644 --- a/drivers/usb/Kconfig +++ b/drivers/usb/Kconfig @@ -113,8 +113,6 @@ source "drivers/usb/usbip/Kconfig" endif -source "drivers/usb/cdns3/Kconfig" - source "drivers/usb/mtu3/Kconfig" source "drivers/usb/musb/Kconfig" diff --git a/drivers/usb/Makefile b/drivers/usb/Makefile index 09fc9f2448ce..ecc2de1ffaae 100644 --- a/drivers/usb/Makefile +++ b/drivers/usb/Makefile @@ -13,8 +13,6 @@ obj-$(CONFIG_USB_DWC3) += dwc3/ obj-$(CONFIG_USB_DWC2) += dwc2/ obj-$(CONFIG_USB_ISP1760) += isp1760/ -obj-$(CONFIG_USB_CDNS3) += cdns3/ - obj-$(CONFIG_USB_MON) += mon/ obj-$(CONFIG_USB_MTU3) += mtu3/ diff --git a/drivers/usb/cdns3/Kconfig b/drivers/usb/cdns3/Kconfig deleted file mode 100644 index 118ec91c4c70..000000000000 --- a/drivers/usb/cdns3/Kconfig +++ /dev/null @@ -1,44 +0,0 @@ -config USB_CDNS3 - tristate "Cadence USB3 Dual-Role Controller" - depends on USB_SUPPORT && (USB || USB_GADGET) && HAS_DMA - help - Say Y here if your system has a Cadence USB3 dual-role controller. - It supports: dual-role switch, Host-only, and Peripheral-only. - - If you choose to build this driver is a dynamically linked - as module, the module will be called cdns3.ko. - -if USB_CDNS3 - -config USB_CDNS3_GADGET - bool "Cadence USB3 device controller" - depends on USB_GADGET - help - Say Y here to enable device controller functionality of the - Cadence USBSS-DEV driver. - - This controller supports FF, HS and SS mode. It doesn't support - LS and SSP mode. - -config USB_CDNS3_HOST - bool "Cadence USB3 host controller" - depends on USB_XHCI_HCD - help - Say Y here to enable host controller functionality of the - Cadence driver. - - Host controller is compliant with XHCI so it will use - standard XHCI driver. - -config USB_CDNS3_PCI_WRAP - tristate "Cadence USB3 support on PCIe-based platforms" - depends on USB_PCI && ACPI - default USB_CDNS3 - help - If you're using the USBSS Core IP with a PCIe, please say - 'Y' or 'M' here. - - If you choose to build this driver as module it will - be dynamically linked and module will be called cdns3-pci.ko - -endif diff --git a/drivers/usb/cdns3/Makefile b/drivers/usb/cdns3/Makefile deleted file mode 100644 index 46c27b94b94b..000000000000 --- a/drivers/usb/cdns3/Makefile +++ /dev/null @@ -1,14 +0,0 @@ -# SPDX-License-Identifier: GPL-2.0 -# define_trace.h needs to know how to find our header -CFLAGS_trace.o := -I$(src) - -cdns3-y := core.o drd.o - -obj-$(CONFIG_USB_CDNS3) += cdns3.o -ifneq ($(CONFIG_DEBUG_FS),) - cdns3-y += debugfs.o -endif - -cdns3-$(CONFIG_USB_CDNS3_GADGET) += gadget.o ep0.o trace.o -cdns3-$(CONFIG_USB_CDNS3_HOST) += host.o -obj-$(CONFIG_USB_CDNS3_PCI_WRAP) += cdns3-pci-wrap.o diff --git a/drivers/usb/cdns3/cdns3-pci-wrap.c b/drivers/usb/cdns3/cdns3-pci-wrap.c deleted file mode 100644 index 65b61ea246b1..000000000000 --- a/drivers/usb/cdns3/cdns3-pci-wrap.c +++ /dev/null @@ -1,157 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -/* - * Cadence USBSS PCI Glue driver - * - * Copyright (C) 2018-2019 Cadence. - * - * Author: Pawel Laszczak <pawell@cadence.com> - */ - -#include <linux/kernel.h> -#include <linux/module.h> -#include <linux/pci.h> -#include <linux/platform_device.h> -#include <linux/dma-mapping.h> -#include <linux/slab.h> - -struct cdns3_wrap { - struct platform_device *plat_dev; - struct pci_dev *hg_dev; - struct resource dev_res[6]; -}; - -#define RES_IRQ_HOST_ID 0 -#define RES_IRQ_PERIPHERAL_ID 1 -#define RES_IRQ_OTG_ID 2 -#define RES_HOST_ID 3 -#define RES_DEV_ID 4 -#define RES_DRD_ID 5 - -#define PCI_BAR_HOST 0 -#define PCI_BAR_DEV 2 -#define PCI_BAR_OTG 4 - -#define PCI_DEV_FN_HOST_DEVICE 0 -#define PCI_DEV_FN_OTG 1 - -#define PCI_DRIVER_NAME "cdns3-pci-usbss" -#define PLAT_DRIVER_NAME "cdns-usb3" - -#define CDNS_VENDOR_ID 0x17cd -#define CDNS_DEVICE_ID 0x0100 - -static int cdns3_pci_probe(struct pci_dev *pdev, - const struct pci_device_id *id) -{ - struct platform_device_info plat_info; - struct cdns3_wrap *wrap; - struct resource *res; - int err; - - /* - * for GADGET/HOST PCI (devfn) function number is 0, - * for OTG PCI (devfn) function number is 1 - */ - if (!id || pdev->devfn != PCI_DEV_FN_HOST_DEVICE) - return -EINVAL; - - err = pcim_enable_device(pdev); - if (err) { - dev_err(&pdev->dev, "Enabling PCI device has failed %d\n", err); - return err; - } - - pci_set_master(pdev); - wrap = devm_kzalloc(&pdev->dev, sizeof(*wrap), GFP_KERNEL); - if (!wrap) { - pci_disable_device(pdev); - return -ENOMEM; - } - - /* function 0: host(BAR_0) + device(BAR_1) + otg(BAR_2)). */ - dev_dbg(&pdev->dev, "Initialize Device resources\n"); - res = wrap->dev_res; - - res[RES_DEV_ID].start = pci_resource_start(pdev, PCI_BAR_DEV); - res[RES_DEV_ID].end = pci_resource_end(pdev, PCI_BAR_DEV); - res[RES_DEV_ID].name = "dev"; - res[RES_DEV_ID].flags = IORESOURCE_MEM; - dev_dbg(&pdev->dev, "USBSS-DEV physical base addr: %pa\n", - &res[RES_DEV_ID].start); - - res[RES_HOST_ID].start = pci_resource_start(pdev, PCI_BAR_HOST); - res[RES_HOST_ID].end = pci_resource_end(pdev, PCI_BAR_HOST); - res[RES_HOST_ID].name = "xhci"; - res[RES_HOST_ID].flags = IORESOURCE_MEM; - dev_dbg(&pdev->dev, "USBSS-XHCI physical base addr: %pa\n", - &res[RES_HOST_ID].start); - - res[RES_DRD_ID].start = pci_resource_start(pdev, PCI_BAR_OTG); - res[RES_DRD_ID].end = pci_resource_end(pdev, PCI_BAR_OTG); - res[RES_DRD_ID].name = "otg"; - res[RES_DRD_ID].flags = IORESOURCE_MEM; - dev_dbg(&pdev->dev, "USBSS-DRD physical base addr: %pa\n", - &res[RES_DRD_ID].start); - - /* Interrupt for XHCI */ - wrap->dev_res[RES_IRQ_HOST_ID].start = pdev->irq; - wrap->dev_res[RES_IRQ_HOST_ID].name = "host"; - wrap->dev_res[RES_IRQ_HOST_ID].flags = IORESOURCE_IRQ; - - /* Interrupt device. It's the same as for HOST. */ - wrap->dev_res[RES_IRQ_PERIPHERAL_ID].start = pdev->irq; - wrap->dev_res[RES_IRQ_PERIPHERAL_ID].name = "peripheral"; - wrap->dev_res[RES_IRQ_PERIPHERAL_ID].flags = IORESOURCE_IRQ; - - /* Interrupt for OTG/DRD. */ - wrap->dev_res[RES_IRQ_OTG_ID].start = pdev->irq; - wrap->dev_res[RES_IRQ_OTG_ID].name = "otg"; - wrap->dev_res[RES_IRQ_OTG_ID].flags = IORESOURCE_IRQ; - - /* set up platform device info */ - memset(&plat_info, 0, sizeof(plat_info)); - plat_info.parent = &pdev->dev; - plat_info.fwnode = pdev->dev.fwnode; - plat_info.name = PLAT_DRIVER_NAME; - plat_info.id = pdev->devfn; - plat_info.res = wrap->dev_res; - plat_info.num_res = ARRAY_SIZE(wrap->dev_res); - plat_info.dma_mask = pdev->dma_mask; - - /* register platform device */ - wrap->plat_dev = platform_device_register_full(&plat_info); - if (IS_ERR(wrap->plat_dev)) { - pci_disable_device(pdev); - return PTR_ERR(wrap->plat_dev); - } - - pci_set_drvdata(pdev, wrap); - - return err; -} - -static void cdns3_pci_remove(struct pci_dev *pdev) -{ - struct cdns3_wrap *wrap = (struct cdns3_wrap *)pci_get_drvdata(pdev); - - platform_device_unregister(wrap->plat_dev); -} - -static const struct pci_device_id cdns3_pci_ids[] = { - { PCI_DEVICE(CDNS_VENDOR_ID, CDNS_DEVICE_ID), }, - { 0, } -}; - -static struct pci_driver cdns3_pci_driver = { - .name = PCI_DRIVER_NAME, - .id_table = cdns3_pci_ids, - .probe = cdns3_pci_probe, - .remove = cdns3_pci_remove, -}; - -module_pci_driver(cdns3_pci_driver); -MODULE_DEVICE_TABLE(pci, cdns3_pci_ids); - -MODULE_AUTHOR("Pawel Laszczak <pawell@cadence.com>"); -MODULE_LICENSE("GPL v2"); -MODULE_DESCRIPTION("Cadence USBSS PCI wrapperr"); diff --git a/drivers/usb/cdns3/core.c b/drivers/usb/cdns3/core.c deleted file mode 100644 index ddc73f1c87c5..000000000000 --- a/drivers/usb/cdns3/core.c +++ /dev/null @@ -1,543 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -/* - * Cadence USBSS DRD Driver. - * - * Copyright (C) 2018-2019 Cadence. - * Copyright (C) 2017-2018 NXP - * Copyright (C) 2019 Texas Instruments - * - * Author: Peter Chen <peter.chen@nxp.com> - * Pawel Laszczak <pawell@cadence.com> - * Roger Quadros <rogerq@ti.com> - */ - -#include <linux/dma-mapping.h> -#include <linux/module.h> -#include <linux/kernel.h> -#include <linux/platform_device.h> -#include <linux/interrupt.h> -#include <linux/io.h> -#include <linux/pm_runtime.h> - -#include "gadget.h" -#include "core.h" -#include "host-export.h" -#include "gadget-export.h" -#include "drd.h" -#include "debug.h" - -/** - * cdns3_handshake - spin reading until handshake completes or fails - * @ptr: address of device controller register to be read - * @mask: bits to look at in result of read - * @done: value of those bits when handshake succeeds - * @usec: timeout in microseconds - * - * Returns negative errno, or zero on success - * - * Success happens when the "mask" bits have the specified value (hardware - * handshake done). There are two failure modes: "usec" have passed (major - * hardware flakeout), or the register reads as all-ones (hardware removed). - */ -int cdns3_handshake(void __iomem *ptr, u32 mask, u32 done, int usec) -{ - u32 result; - - do { - result = readl(ptr); - if (result == ~(u32)0) /* card removed */ - return -ENODEV; - - result &= mask; - if (result == done) - return 0; - - udelay(1); - usec--; - } while (usec > 0); - - return -ETIMEDOUT; -} - -static inline -struct cdns3_role_driver *cdns3_get_current_role_driver(struct cdns3 *cdns) -{ - WARN_ON(cdns->role >= CDNS3_ROLE_END || !cdns->roles[cdns->role]); - return cdns->roles[cdns->role]; -} - -static int cdns3_role_start(struct cdns3 *cdns, enum cdns3_roles role) -{ - int ret; - - if (WARN_ON(role >= CDNS3_ROLE_END)) - return 0; - - if (!cdns->roles[role]) - return -ENXIO; - - if (cdns->roles[role]->state == CDNS3_ROLE_STATE_ACTIVE) - return 0; - - mutex_lock(&cdns->mutex); - cdns->role = role; - ret = cdns->roles[role]->start(cdns); - if (!ret) - cdns->roles[role]->state = CDNS3_ROLE_STATE_ACTIVE; - mutex_unlock(&cdns->mutex); - return ret; -} - -void cdns3_role_stop(struct cdns3 *cdns) -{ - enum cdns3_roles role = cdns->role; - - if (role >= CDNS3_ROLE_END) { - WARN_ON(role > CDNS3_ROLE_END); - return; - } - - if (cdns->roles[role]->state == CDNS3_ROLE_STATE_INACTIVE) - return; - - mutex_lock(&cdns->mutex); - cdns->roles[role]->stop(cdns); - cdns->roles[role]->state = CDNS3_ROLE_STATE_INACTIVE; - mutex_unlock(&cdns->mutex); -} - -static void cdns3_exit_roles(struct cdns3 *cdns) -{ - cdns3_role_stop(cdns); - cdns3_drd_exit(cdns); -} - -enum cdns3_roles cdsn3_get_real_role(struct cdns3 *cdns); - -static int cdns3_idle_role_start(struct cdns3 *cnds) -{ /* Hold PHY in RESET */ - return 0; -} - -static void cdns3_idle_role_stop(struct cdns3 *cnds) -{ - /* Program Lane swap and bring PHY out of RESET */ -} - -static int cdns3_idle_init(struct cdns3 *cdns) -{ - struct cdns3_role_driver *rdrv; - - rdrv = devm_kzalloc(cdns->dev, sizeof(*rdrv), GFP_KERNEL); - if (!rdrv) - return -ENOMEM; - - rdrv->start = cdns3_idle_role_start; - rdrv->stop = cdns3_idle_role_stop; - rdrv->state = CDNS3_ROLE_STATE_INACTIVE; - rdrv->suspend = NULL; - rdrv->resume = NULL; - rdrv->name = "idle"; - - cdns->roles[CDNS3_ROLE_IDLE] = rdrv; - - return 0; -} - -/** - * cdns3_core_init_role - initialize role of operation - * @cdns: Pointer to cdns3 structure - * - * Returns 0 on success otherwise negative errno - */ -static int cdns3_core_init_role(struct cdns3 *cdns) -{ - struct device *dev = cdns->dev; - enum usb_dr_mode best_dr_mode; - enum usb_dr_mode dr_mode; - int ret = 0; - - dr_mode = usb_get_dr_mode(dev); - cdns->role = CDNS3_ROLE_END; - - /* - * If driver can't read mode by means of usb_get_dr_mode function then - * chooses mode according with Kernel configuration. This setting - * can be restricted later depending on strap pin configuration. - */ - if (dr_mode == USB_DR_MODE_UNKNOWN) { - if (IS_ENABLED(CONFIG_USB_CDNS3_HOST) && - IS_ENABLED(CONFIG_USB_CDNS3_GADGET)) - dr_mode = USB_DR_MODE_OTG; - else if (IS_ENABLED(CONFIG_USB_CDNS3_HOST)) - dr_mode = USB_DR_MODE_HOST; - else if (IS_ENABLED(CONFIG_USB_CDNS3_GADGET)) - dr_mode = USB_DR_MODE_PERIPHERAL; - } - - /* - * At this point cdns->dr_mode contains strap configuration. - * Driver try update this setting considering kernel configuration - */ - best_dr_mode = cdns->dr_mode; - - ret = cdns3_idle_init(cdns); - if (ret) - return ret; - - if (dr_mode == USB_DR_MODE_OTG) { - best_dr_mode = cdns->dr_mode; - } else if (cdns->dr_mode == USB_DR_MODE_OTG) { - best_dr_mode = dr_mode; - } else if (cdns->dr_mode != dr_mode) { - dev_err(dev, "Incorrect DRD configuration\n"); - return -EINVAL; - } - - dr_mode = best_dr_mode; - - if (dr_mode == USB_DR_MODE_OTG || dr_mode == USB_DR_MODE_HOST) { - ret = cdns3_host_init(cdns); - if (ret) { - dev_err(dev, "Host initialization failed with %d\n", - ret); - goto err; - } - } - - if (dr_mode == USB_DR_MODE_OTG || dr_mode == USB_DR_MODE_PERIPHERAL) { - ret = cdns3_gadget_init(cdns); - if (ret) { - dev_err(dev, "Device initialization failed with %d\n", - ret); - goto err; - } - } - - cdns->desired_dr_mode = dr_mode; - cdns->dr_mode = dr_mode; - - /* - * desired_dr_mode might have changed so we need to update - * the controller configuration"? - */ - ret = cdns3_drd_update_mode(cdns); - if (ret) - goto err; - - cdns->role = cdsn3_get_real_role(cdns); - - ret = cdns3_role_start(cdns, cdns->role); - if (ret) { - dev_err(dev, "can't start %s role\n", - cdns3_get_current_role_driver(cdns)->name); - goto err; - } - - return ret; -err: - cdns3_exit_roles(cdns); - return ret; -} - -/** - * cdsn3_get_real_role - get real role of controller based on hardware settings. - * @cdns: Pointer to cdns3 structure - * - * Returns role - */ -enum cdns3_roles cdsn3_get_real_role(struct cdns3 *cdns) -{ - enum cdns3_roles role; - int id, vbus; - - if (cdns->current_dr_mode != USB_DR_MODE_OTG) - goto not_otg; - - id = cdns3_get_id(cdns); - vbus = cdns3_get_vbus(cdns); - - /* - * Role change state machine - * Inputs: ID, VBUS - * Previous state: cdns->role - * Next state: role - */ - role = cdns->role; - - switch (role) { - case CDNS3_ROLE_IDLE: /* from IDLE, we can change to HOST or GADGET */ - if (!id) - role = CDNS3_ROLE_HOST; - else if (vbus) - role = CDNS3_ROLE_GADGET; - break; - case CDNS3_ROLE_HOST: /* from HOST, we can only change to IDLE */ - if (id) - role = CDNS3_ROLE_IDLE; - break; - case CDNS3_ROLE_GADGET: /* from GADGET, we can only change to IDLE */ - if (!vbus) - role = CDNS3_ROLE_IDLE; - break; - case CDNS3_ROLE_END: /* only at initialization, move to IDLE */ - role = CDNS3_ROLE_IDLE; - break; - } - - dev_dbg(cdns->dev, "role %d -> %d\n", cdns->role, role); - - return role; - -not_otg: - if (cdns3_is_host(cdns)) - role = CDNS3_ROLE_HOST; - if (cdns3_is_device(cdns)) - role = CDNS3_ROLE_GADGET; - - return role; -} - -/** - * cdns3_role_switch - work queue handler for role switch - * - * @work: work queue item structure - * - * Handles below events: - * - Role switch for dual-role devices - * - CDNS3_ROLE_GADGET <--> CDNS3_ROLE_END for peripheral-only devices - */ -static void cdns3_role_switch(struct work_struct *work) -{ - enum cdns3_roles role = CDNS3_ROLE_END; - struct cdns3_role_driver *role_drv; - enum cdns3_roles current_role; - struct cdns3 *cdns; - int ret = 0; - - cdns = container_of(work, struct cdns3, role_switch_wq); - - pm_runtime_get_sync(cdns->dev); - - role = cdsn3_get_real_role(cdns); - - role_drv = cdns3_get_current_role_driver(cdns); - - /* Disable current role if requested from debugfs */ - if (cdns->debug_disable && role_drv->state == CDNS3_ROLE_STATE_ACTIVE) { - cdns3_role_stop(cdns); - goto exit; - } - - /* Do nothing if nothing changed */ - if (cdns->role == role && role_drv->state == CDNS3_ROLE_STATE_ACTIVE) - goto exit; - - cdns3_role_stop(cdns); - - role = cdsn3_get_real_role(cdns); - - current_role = cdns->role; - dev_dbg(cdns->dev, "Switching role"); - - ret = cdns3_role_start(cdns, role); - if (ret) { - /* Back to current role */ - dev_err(cdns->dev, "set %d has failed, back to %d\n", - role, current_role); - ret = cdns3_role_start(cdns, current_role); - if (ret) - dev_err(cdns->dev, "back to %d failed too\n", - current_role); - } -exit: - pm_runtime_put_sync(cdns->dev); -} - -/** - * cdns3_probe - probe for cdns3 core device - * @pdev: Pointer to cdns3 core platform device - * - * Returns 0 on success otherwise negative errno - */ -static int cdns3_probe(struct platform_device *pdev) -{ - struct device *dev = &pdev->dev; - struct resource *res; - struct cdns3 *cdns; - void __iomem *regs; - int ret; - - ret = dma_set_mask_and_coherent(dev, DMA_BIT_MASK(32)); - if (ret) { - dev_err(dev, "error setting dma mask: %d\n", ret); - return -ENODEV; - } - - cdns = devm_kzalloc(dev, sizeof(*cdns), GFP_KERNEL); - if (!cdns) - return -ENOMEM; - - cdns->dev = dev; - - platform_set_drvdata(pdev, cdns); - - res = platform_get_resource_byname(pdev, IORESOURCE_IRQ, "host"); - if (!res) { - dev_err(dev, "missing host IRQ\n"); - return -ENODEV; - } - - cdns->xhci_res[0] = *res; - - res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "xhci"); - if (!res) { - dev_err(dev, "couldn't get xhci resource\n"); - return -ENXIO; - } - - cdns->xhci_res[1] = *res; - - cdns->dev_irq = platform_get_irq_byname(pdev, "peripheral"); - if (cdns->dev_irq == -EPROBE_DEFER) - return cdns->dev_irq; - - if (cdns->dev_irq < 0) - dev_err(dev, "couldn't get peripheral irq\n"); - - res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "dev"); - regs = devm_ioremap_resource(dev, res); - if (IS_ERR(regs)) { - dev_err(dev, "couldn't iomap dev resource\n"); - return PTR_ERR(regs); - } - cdns->dev_regs = regs; - - cdns->otg_irq = platform_get_irq_byname(pdev, "otg"); - if (cdns->otg_irq == -EPROBE_DEFER) - return cdns->otg_irq; - - if (cdns->otg_irq < 0) { - dev_err(dev, "couldn't get otg irq\n"); - return cdns->otg_irq; - } - - res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "otg"); - if (!res) { - dev_err(dev, "couldn't get otg resource\n"); - return -ENXIO; - } - - cdns->otg_res = *res; - - mutex_init(&cdns->mutex); - - cdns->usb2_phy = devm_phy_optional_get(dev, "cdns3,usb2-phy"); - if (IS_ERR(cdns->usb2_phy)) - return PTR_ERR(cdns->usb2_phy); - - phy_init(cdns->usb2_phy); - ret = phy_init(cdns->usb2_phy); - if (ret) - return ret; - - cdns->usb3_phy = devm_phy_optional_get(dev, "cdns3,usb3-phy"); - if (IS_ERR(cdns->usb3_phy)) - return PTR_ERR(cdns->usb3_phy); - - phy_init(cdns->usb3_phy); - ret = phy_init(cdns->usb3_phy); - if (ret) - return ret; - - ret = phy_power_on(cdns->usb2_phy); - if (ret) - return ret; - - ret = phy_power_on(cdns->usb3_phy); - if (ret) - goto err1; - - INIT_WORK(&cdns->role_switch_wq, cdns3_role_switch); - - ret = cdns3_drd_init(cdns); - if (ret) - goto err2; - - ret = cdns3_core_init_role(cdns); - if (ret) - goto err2; - - cdns3_debugfs_init(cdns); - device_set_wakeup_capable(dev, true); - pm_runtime_set_active(dev); - pm_runtime_enable(dev); - - /* - * The controller needs less time between bus and controller suspend, - * and we also needs a small delay to avoid frequently entering low - * power mode. - */ - pm_runtime_set_autosuspend_delay(dev, 20); - pm_runtime_mark_last_busy(dev); - pm_runtime_use_autosuspend(dev); - dev_dbg(dev, "Cadence USB3 core: probe succeed\n"); - - return 0; - -err2: - phy_power_off(cdns->usb3_phy); - -err1: - phy_power_off(cdns->usb2_phy); - phy_exit(cdns->usb2_phy); - phy_exit(cdns->usb3_phy); - - return ret; -} - -/** - * cdns3_remove - unbind drd driver and clean up - * @pdev: Pointer to Linux platform device - * - * Returns 0 on success otherwise negative errno - */ -static int cdns3_remove(struct platform_device *pdev) -{ - struct cdns3 *cdns = platform_get_drvdata(pdev); - - pm_runtime_get_sync(&pdev->dev); - pm_runtime_disable(&pdev->dev); - pm_runtime_put_noidle(&pdev->dev); - cdns3_debugfs_exit(cdns); - cdns3_exit_roles(cdns); - phy_power_off(cdns->usb2_phy); - phy_power_off(cdns->usb3_phy); - phy_exit(cdns->usb2_phy); - phy_exit(cdns->usb3_phy); - return 0; -} - -#ifdef CONFIG_OF -static const struct of_device_id of_cdns3_match[] = { - { .compatible = "cdns,usb3" }, - { }, -}; -MODULE_DEVICE_TABLE(of, of_cdns3_match); -#endif - -static struct platform_driver cdns3_driver = { - .probe = cdns3_probe, - .remove = cdns3_remove, - .driver = { - .name = "cdns-usb3", - .of_match_table = of_match_ptr(of_cdns3_match), - }, -}; - -module_platform_driver(cdns3_driver); - -MODULE_ALIAS("platform:cdns3"); -MODULE_AUTHOR("Pawel Laszczak <pawell@cadence.com>"); -MODULE_LICENSE("GPL v2"); -MODULE_DESCRIPTION("Cadence USB3 DRD Controller Driver"); diff --git a/drivers/usb/cdns3/core.h b/drivers/usb/cdns3/core.h deleted file mode 100644 index be95696ab17e..000000000000 --- a/drivers/usb/cdns3/core.h +++ /dev/null @@ -1,121 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0 */ -/* - * Cadence USBSS DRD Header File. - * - * Copyright (C) 2017-2018 NXP - * Copyright (C) 2018-2019 Cadence. - * - * Authors: Peter Chen <peter.chen@nxp.com> - * Pawel Laszczak <pawell@cadence.com> - */ -#include <linux/usb/otg.h> - -#ifndef __LINUX_CDNS3_CORE_H -#define __LINUX_CDNS3_CORE_H - -struct cdns3; -enum cdns3_roles { - CDNS3_ROLE_IDLE = 0, - CDNS3_ROLE_HOST, - CDNS3_ROLE_GADGET, - CDNS3_ROLE_END, -}; - -/** - * struct cdns3_role_driver - host/gadget role driver - * @start: start this role - * @stop: stop this role - * @suspend: suspend callback for this role - * @resume: resume callback for this role - * @irq: irq handler for this role - * @name: role name string (host/gadget) - * @state: current state - */ -struct cdns3_role_driver { - int (*start)(struct cdns3 *cdns); - void (*stop)(struct cdns3 *cdns); - int (*suspend)(struct cdns3 *cdns, bool do_wakeup); - int (*resume)(struct cdns3 *cdns, bool hibernated); - const char *name; -#define CDNS3_ROLE_STATE_INACTIVE 0 -#define CDNS3_ROLE_STATE_ACTIVE 1 - int state; -}; - -#define CDNS3_XHCI_RESOURCES_NUM 2 -/** - * struct cdns3 - Representation of Cadence USB3 DRD controller. - * @dev: pointer to Cadence device struct - * @xhci_regs: pointer to base of xhci registers - * @xhci_res: the resource for xhci - * @dev_regs: pointer to base of dev registers - * @otg_res: the resource for otg - * @otg_v0_regs: pointer to base of v0 otg registers - * @otg_v1_regs: pointer to base of v1 otg registers - * @otg_regs: pointer to base of otg registers - * @otg_irq: irq number for otg controller - * @dev_irq: irq number for device controller - * @roles: array of supported roles for this controller - * @role: current role - * @host_dev: the child host device pointer for cdns3 core - * @gadget_dev: the child gadget device pointer for cdns3 core - * @usb2_phy: pointer to USB2 PHY - * @usb3_phy: pointer to USB3 PHY - * @role_switch_wq: work queue item for role switch - * @wakeup_int: the wakeup interrupt - * @mutex: the mutex for concurrent code at driver - * @dr_mode: supported mode of operation it can be only Host, only Device - * or OTG mode that allow to switch between Device and Host mode. - * This field based on firmware setting, kernel configuration - * and hardware configuration. - * @current_dr_mode: current mode of operation when in dual-role mode - * @desired_dr_mode: desired mode of operation when in dual-role mode. - * This value can be changed during runtime. - * Available options depends on dr_mode: - * dr_mode | desired_dr_mode and current_dr_mode - * ---------------------------------------------------------------- - * USB_DR_MODE_HOST | only USB_DR_MODE_HOST - * USB_DR_MODE_PERIPHERAL | only USB_DR_MODE_PERIPHERAL - * USB_DR_MODE_OTG | USB_DR_MODE_OTG or USB_DR_MODE_HOST or - * | USB_DR_MODE_PERIPHERAL - * Desired_dr_role can be changed by means of debugfs. - * @root: debugfs root folder pointer - * @debug_disable: - */ -struct cdns3 { - struct device *dev; - void __iomem *xhci_regs; - struct resource xhci_res[CDNS3_XHCI_RESOURCES_NUM]; - struct cdns3_usb_regs __iomem *dev_regs; - - struct resource otg_res; - struct cdns3_otg_legacy_regs *otg_v0_regs; - struct cdns3_otg_regs *otg_v1_regs; - struct cdns3_otg_common_regs *otg_regs; -#define CDNS3_CONTROLLER_V0 0 -#define CDNS3_CONTROLLER_V1 1 - u32 version; - - int otg_irq; - int dev_irq; - struct cdns3_role_driver *roles[CDNS3_ROLE_END]; - enum cdns3_roles role; - struct platform_device *host_dev; - struct cdns3_device *gadget_dev; - struct phy *usb2_phy; - struct phy *usb3_phy; - struct work_struct role_switch_wq; - int wakeup_int:1; - /* mutext used in workqueue*/ - struct mutex mutex; - enum usb_dr_mode dr_mode; - enum usb_dr_mode current_dr_mode; - enum usb_dr_mode desired_dr_mode; - struct dentry *root; - int debug_disable:1; -}; - -void cdns3_role_stop(struct cdns3 *cdns); -int cdns3_handshake(void __iomem *ptr, u32 mask, u32 done, int usec); - -#endif /* __LINUX_CDNS3_CORE_H */ diff --git a/drivers/usb/cdns3/debug.h b/drivers/usb/cdns3/debug.h deleted file mode 100644 index 65c3d8a6cd62..000000000000 --- a/drivers/usb/cdns3/debug.h +++ /dev/null @@ -1,173 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0 */ -/* - * Cadence USBSS DRD Driver. - * Debug header file. - * - * Copyright (C) 2018-2019 Cadence. - * - * Author: Pawel Laszczak <pawell@cadence.com> - */ -#ifndef __LINUX_CDNS3_DEBUG -#define __LINUX_CDNS3_DEBUG - -#include "core.h" - -static inline char *cdns3_decode_usb_irq(char *str, - enum usb_device_speed speed, - u32 usb_ists) -{ - int ret; - - ret = sprintf(str, "IRQ %08x = ", usb_ists); - - if (usb_ists & (USB_ISTS_CON2I | USB_ISTS_CONI)) { - ret += sprintf(str + ret, "Connection %s\n", - usb_speed_string(speed)); - } - if (usb_ists & USB_ISTS_DIS2I || usb_ists & USB_ISTS_DISI) - ret += sprintf(str + ret, "Disconnection "); - if (usb_ists & USB_ISTS_L2ENTI) - ret += sprintf(str + ret, "suspended "); - if (usb_ists & USB_ISTS_L1ENTI) - ret += sprintf(str + ret, "L1 enter "); - if (usb_ists & USB_ISTS_L1EXTI) - ret += sprintf(str + ret, "L1 exit "); - if (usb_ists & USB_ISTS_L2ENTI) - ret += sprintf(str + ret, "L2 enter "); - if (usb_ists & USB_ISTS_L2EXTI) - ret += sprintf(str + ret, "L2 exit "); - if (usb_ists & USB_ISTS_U3EXTI) - ret += sprintf(str + ret, "U3 exit "); - if (usb_ists & USB_ISTS_UWRESI) - ret += sprintf(str + ret, "Warm Reset "); - if (usb_ists & USB_ISTS_UHRESI) - ret += sprintf(str + ret, "Hot Reset "); - if (usb_ists & USB_ISTS_U2RESI) - ret += sprintf(str + ret, "Reset"); - - return str; -} - -static inline char *cdns3_decode_ep_irq(char *str, - u32 ep_sts, - const char *ep_name) -{ - int ret; - - ret = sprintf(str, "IRQ for %s: %08x ", ep_name, ep_sts); - - if (ep_sts & EP_STS_SETUP) - ret += sprintf(str + ret, "SETUP "); - if (ep_sts & EP_STS_IOC) - ret += sprintf(str + ret, "IOC "); - if (ep_sts & EP_STS_ISP) - ret += sprintf(str + ret, "ISP "); - if (ep_sts & EP_STS_DESCMIS) - ret += sprintf(str + ret, "DESCMIS "); - if (ep_sts & EP_STS_STREAMR) - ret += sprintf(str + ret, "STREAMR "); - if (ep_sts & EP_STS_MD_EXIT) - ret += sprintf(str + ret, "MD_EXIT "); - if (ep_sts & EP_STS_TRBERR) - ret += sprintf(str + ret, "TRBERR "); - if (ep_sts & EP_STS_NRDY) - ret += sprintf(str + ret, "NRDY "); - if (ep_sts & EP_STS_PRIME) - ret += sprintf(str + ret, "PRIME "); - if (ep_sts & EP_STS_SIDERR) - ret += sprintf(str + ret, "SIDERRT "); - if (ep_sts & EP_STS_OUTSMM) - ret += sprintf(str + ret, "OUTSMM "); - if (ep_sts & EP_STS_ISOERR) - ret += sprintf(str + ret, "ISOERR "); - if (ep_sts & EP_STS_IOT) - ret += sprintf(str + ret, "IOT "); - - return str; -} - -static inline char *cdns3_decode_epx_irq(char *str, - char *ep_name, - u32 ep_sts) -{ - return cdns3_decode_ep_irq(str, ep_sts, ep_name); -} - -static inline char *cdns3_decode_ep0_irq(char *str, - int dir, - u32 ep_sts) -{ - return cdns3_decode_ep_irq(str, ep_sts, - dir ? "ep0IN" : "ep0OUT"); -} - -/** - * Debug a transfer ring. - * - * Prints out all TRBs in the endpoint ring, even those after the Link TRB. - *. - */ -static inline char *cdns3_dbg_ring(struct cdns3_endpoint *priv_ep, - struct cdns3_trb *ring, char *str) -{ - dma_addr_t addr = priv_ep->trb_pool_dma; - struct cdns3_trb *trb; - int trb_per_sector; - int ret = 0; - int i; - - trb_per_sector = GET_TRBS_PER_SEGMENT(priv_ep->type); - - trb = &priv_ep->trb_pool[priv_e |