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linux/drivers/usb/cdns3/host.c

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usb: cdns3: Add Cadence USB3 DRD Driver This patch introduce new Cadence USBSS DRD driver to Linux kernel. The Cadence USBSS DRD Controller is a highly configurable IP Core which can be instantiated as Dual-Role Device (DRD), Peripheral Only and Host Only (XHCI)configurations. The current driver has been validated with FPGA platform. We have support for PCIe bus, which is used on FPGA prototyping. The host side of USBSS-DRD controller is compliant with XHCI specification, so it works with standard XHCI Linux driver. Signed-off-by: Pawel Laszczak <pawell@cadence.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2019-08-26 14:19:30 +03:00
// SPDX-License-Identifier: GPL-2.0
/*
usb: cdns3: Refactoring names in reusable code Patch change the functions and objects names in reusable code. The reusable code includes core.c, core.h, drd.c and drd.h files. It also changes the names of all references to these functions and objects in other cdns3 files. There are a lot of changes, but all changes are very trivial. The reason of this patch is to avoid of mixing prefix cdns3 and cdnsp in in cdnsp driver what could introduce some confusion in understanding of cdnsp driver. This patch assumes to use three different prefixes in Cadence USB drivers: cdns: for common reusable code cdnsp: for names related only with cdnsp driver cdns3: for names related only with cdns3 driver Signed-off-by: Pawel Laszczak <pawell@cadence.com> Tested-by: Aswath Govindraju <a-govindraju@ti.com> Signed-off-by: Peter Chen <peter.chen@nxp.com>
2020-12-07 13:32:21 +03:00
* Cadence USBSS and USBSSP DRD Driver - host side
usb: cdns3: Add Cadence USB3 DRD Driver This patch introduce new Cadence USBSS DRD driver to Linux kernel. The Cadence USBSS DRD Controller is a highly configurable IP Core which can be instantiated as Dual-Role Device (DRD), Peripheral Only and Host Only (XHCI)configurations. The current driver has been validated with FPGA platform. We have support for PCIe bus, which is used on FPGA prototyping. The host side of USBSS-DRD controller is compliant with XHCI specification, so it works with standard XHCI Linux driver. Signed-off-by: Pawel Laszczak <pawell@cadence.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2019-08-26 14:19:30 +03:00
*
* Copyright (C) 2018-2019 Cadence Design Systems.
* Copyright (C) 2017-2018 NXP
*
* Authors: Peter Chen <peter.chen@nxp.com>
* Pawel Laszczak <pawell@cadence.com>
*/
#include <linux/platform_device.h>
treewide: Add missing includes masked by cgroup -> bpf dependency cgroup.h (therefore swap.h, therefore half of the universe) includes bpf.h which in turn includes module.h and slab.h. Since we're about to get rid of that dependency we need to clean things up. v2: drop the cpu.h include from cacheinfo.h, it's not necessary and it makes riscv sensitive to ordering of include files. Signed-off-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Reviewed-by: Christoph Hellwig <hch@lst.de> Acked-by: Krzysztof Wilczyński <kw@linux.com> Acked-by: Peter Chen <peter.chen@kernel.org> Acked-by: SeongJae Park <sj@kernel.org> Acked-by: Jani Nikula <jani.nikula@intel.com> Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Link: https://lore.kernel.org/all/20211120035253.72074-1-kuba@kernel.org/ # v1 Link: https://lore.kernel.org/all/20211120165528.197359-1-kuba@kernel.org/ # cacheinfo discussion Link: https://lore.kernel.org/bpf/20211202203400.1208663-1-kuba@kernel.org
2021-12-02 23:34:00 +03:00
#include <linux/slab.h>
usb: cdns3: Add Cadence USB3 DRD Driver This patch introduce new Cadence USBSS DRD driver to Linux kernel. The Cadence USBSS DRD Controller is a highly configurable IP Core which can be instantiated as Dual-Role Device (DRD), Peripheral Only and Host Only (XHCI)configurations. The current driver has been validated with FPGA platform. We have support for PCIe bus, which is used on FPGA prototyping. The host side of USBSS-DRD controller is compliant with XHCI specification, so it works with standard XHCI Linux driver. Signed-off-by: Pawel Laszczak <pawell@cadence.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2019-08-26 14:19:30 +03:00
#include "core.h"
#include "drd.h"
usb: cdns3: include host-export,h for cdns3_host_init The cdns3_host_init() function is declared in host-export.h but host.c does not include it. Add the include to have the declaration present (and remove the declaration of cdns3_host_exit which is now static). Fixes the following sparse warning: drivers/usb/cdns3/host.c:58:5: warning: symbol 'cdns3_host_init' was not declared. Should it be static? Signed-off-by: Ben Dooks <ben.dooks@codethink.co.uk> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2019-10-17 15:44:27 +03:00
#include "host-export.h"
usb: cdns3: add runtime PM support Introduce runtime PM and wakeup interrupt handler for cdns3, the runtime PM is default off since other cdns3 may not implement glue layer support for runtime PM. One typical wakeup event use case is xHCI runtime suspend will clear USBCMD.RS bit, after that the xHCI will not trigger any interrupts, so its parent (cdns core device) needs to resume xHCI device when any (wakeup) events occurs at host port. When the controller is in low power mode, the lpm flag will be set. The interrupt triggered later than lpm flag is set considers as wakeup interrupt and handled at cdns_wakeup_irq. Once the wakeup occurs, it first disables interrupt to avoid later interrupt occurrence since the controller is in low power mode at that time, and access registers may be invalid at that time. At wakeup handler, it will call pm_request_resume to wakeup xHCI device, and at runtime resume handler, it will enable interrupt again. The API platform_suspend is introduced for glue layer to implement platform specific PM sequence. Reviewed-by: Pawel Laszczak <pawell@cadence.com> Signed-off-by: Peter Chen <peter.chen@nxp.com> Signed-off-by: Felipe Balbi <balbi@kernel.org>
2020-09-02 12:57:32 +03:00
#include <linux/usb/hcd.h>
usb: cdns3: host: add .suspend_quirk for xhci-plat.c cdns3 has some special PM sequence between xhci_bus_suspend and xhci_suspend, add quirk to implement it. Reviewed-by: Pawel Laszczak <pawell@cadence.com> Signed-off-by: Peter Chen <peter.chen@nxp.com>
2020-05-22 12:56:30 +03:00
#include "../host/xhci.h"
#include "../host/xhci-plat.h"
#define XECP_PORT_CAP_REG 0x8000
#define XECP_AUX_CTRL_REG1 0x8120
#define CFG_RXDET_P3_EN BIT(15)
#define LPM_2_STB_SWITCH_EN BIT(25)
usb: cdns3: Removes xhci_cdns3_suspend_quirk from host-export.h Function xhci_cdns3_suspend_quirk is used only in host.c file. We can make it as static and removes it from host-export.h. Signed-off-by: Pawel Laszczak <pawell@cadence.com> Acked-by: Roger Quadros <rogerq@ti.com> Signed-off-by: Peter Chen <peter.chen@nxp.com>
2020-12-11 08:09:54 +03:00
static int xhci_cdns3_suspend_quirk(struct usb_hcd *hcd);
usb: cdns3: host: add .suspend_quirk for xhci-plat.c cdns3 has some special PM sequence between xhci_bus_suspend and xhci_suspend, add quirk to implement it. Reviewed-by: Pawel Laszczak <pawell@cadence.com> Signed-off-by: Peter Chen <peter.chen@nxp.com>
2020-05-22 12:56:30 +03:00
static const struct xhci_plat_priv xhci_plat_cdns3_xhci = {
usb: cdns3: host: disable BEI support The Cadence xHCI doesn't support BEI well, it causes the disconnection of ISOC devices can't be detected, so we disable it. Reviewed-by: Jun Li <jun.li@nxp.com> Signed-off-by: Peter Chen <peter.chen@nxp.com>
2020-07-27 12:53:37 +03:00
.quirks = XHCI_SKIP_PHY_INIT | XHCI_AVOID_BEI,
usb: cdns3: host: add .suspend_quirk for xhci-plat.c cdns3 has some special PM sequence between xhci_bus_suspend and xhci_suspend, add quirk to implement it. Reviewed-by: Pawel Laszczak <pawell@cadence.com> Signed-off-by: Peter Chen <peter.chen@nxp.com>
2020-05-22 12:56:30 +03:00
.suspend_quirk = xhci_cdns3_suspend_quirk,
};
usb: cdns3: Add Cadence USB3 DRD Driver This patch introduce new Cadence USBSS DRD driver to Linux kernel. The Cadence USBSS DRD Controller is a highly configurable IP Core which can be instantiated as Dual-Role Device (DRD), Peripheral Only and Host Only (XHCI)configurations. The current driver has been validated with FPGA platform. We have support for PCIe bus, which is used on FPGA prototyping. The host side of USBSS-DRD controller is compliant with XHCI specification, so it works with standard XHCI Linux driver. Signed-off-by: Pawel Laszczak <pawell@cadence.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2019-08-26 14:19:30 +03:00
usb: cdns3: Refactoring names in reusable code Patch change the functions and objects names in reusable code. The reusable code includes core.c, core.h, drd.c and drd.h files. It also changes the names of all references to these functions and objects in other cdns3 files. There are a lot of changes, but all changes are very trivial. The reason of this patch is to avoid of mixing prefix cdns3 and cdnsp in in cdnsp driver what could introduce some confusion in understanding of cdnsp driver. This patch assumes to use three different prefixes in Cadence USB drivers: cdns: for common reusable code cdnsp: for names related only with cdnsp driver cdns3: for names related only with cdns3 driver Signed-off-by: Pawel Laszczak <pawell@cadence.com> Tested-by: Aswath Govindraju <a-govindraju@ti.com> Signed-off-by: Peter Chen <peter.chen@nxp.com>
2020-12-07 13:32:21 +03:00
static int __cdns_host_init(struct cdns *cdns)
usb: cdns3: Add Cadence USB3 DRD Driver This patch introduce new Cadence USBSS DRD driver to Linux kernel. The Cadence USBSS DRD Controller is a highly configurable IP Core which can be instantiated as Dual-Role Device (DRD), Peripheral Only and Host Only (XHCI)configurations. The current driver has been validated with FPGA platform. We have support for PCIe bus, which is used on FPGA prototyping. The host side of USBSS-DRD controller is compliant with XHCI specification, so it works with standard XHCI Linux driver. Signed-off-by: Pawel Laszczak <pawell@cadence.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2019-08-26 14:19:30 +03:00
{
struct platform_device *xhci;
int ret;
usb: cdns3: add runtime PM support Introduce runtime PM and wakeup interrupt handler for cdns3, the runtime PM is default off since other cdns3 may not implement glue layer support for runtime PM. One typical wakeup event use case is xHCI runtime suspend will clear USBCMD.RS bit, after that the xHCI will not trigger any interrupts, so its parent (cdns core device) needs to resume xHCI device when any (wakeup) events occurs at host port. When the controller is in low power mode, the lpm flag will be set. The interrupt triggered later than lpm flag is set considers as wakeup interrupt and handled at cdns_wakeup_irq. Once the wakeup occurs, it first disables interrupt to avoid later interrupt occurrence since the controller is in low power mode at that time, and access registers may be invalid at that time. At wakeup handler, it will call pm_request_resume to wakeup xHCI device, and at runtime resume handler, it will enable interrupt again. The API platform_suspend is introduced for glue layer to implement platform specific PM sequence. Reviewed-by: Pawel Laszczak <pawell@cadence.com> Signed-off-by: Peter Chen <peter.chen@nxp.com> Signed-off-by: Felipe Balbi <balbi@kernel.org>
2020-09-02 12:57:32 +03:00
struct usb_hcd *hcd;
usb: cdns3: Add Cadence USB3 DRD Driver This patch introduce new Cadence USBSS DRD driver to Linux kernel. The Cadence USBSS DRD Controller is a highly configurable IP Core which can be instantiated as Dual-Role Device (DRD), Peripheral Only and Host Only (XHCI)configurations. The current driver has been validated with FPGA platform. We have support for PCIe bus, which is used on FPGA prototyping. The host side of USBSS-DRD controller is compliant with XHCI specification, so it works with standard XHCI Linux driver. Signed-off-by: Pawel Laszczak <pawell@cadence.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2019-08-26 14:19:30 +03:00
usb: cdns3: Refactoring names in reusable code Patch change the functions and objects names in reusable code. The reusable code includes core.c, core.h, drd.c and drd.h files. It also changes the names of all references to these functions and objects in other cdns3 files. There are a lot of changes, but all changes are very trivial. The reason of this patch is to avoid of mixing prefix cdns3 and cdnsp in in cdnsp driver what could introduce some confusion in understanding of cdnsp driver. This patch assumes to use three different prefixes in Cadence USB drivers: cdns: for common reusable code cdnsp: for names related only with cdnsp driver cdns3: for names related only with cdns3 driver Signed-off-by: Pawel Laszczak <pawell@cadence.com> Tested-by: Aswath Govindraju <a-govindraju@ti.com> Signed-off-by: Peter Chen <peter.chen@nxp.com>
2020-12-07 13:32:21 +03:00
cdns_drd_host_on(cdns);
usb: cdns3: Add Cadence USB3 DRD Driver This patch introduce new Cadence USBSS DRD driver to Linux kernel. The Cadence USBSS DRD Controller is a highly configurable IP Core which can be instantiated as Dual-Role Device (DRD), Peripheral Only and Host Only (XHCI)configurations. The current driver has been validated with FPGA platform. We have support for PCIe bus, which is used on FPGA prototyping. The host side of USBSS-DRD controller is compliant with XHCI specification, so it works with standard XHCI Linux driver. Signed-off-by: Pawel Laszczak <pawell@cadence.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2019-08-26 14:19:30 +03:00
xhci = platform_device_alloc("xhci-hcd", PLATFORM_DEVID_AUTO);
if (!xhci) {
dev_err(cdns->dev, "couldn't allocate xHCI device\n");
return -ENOMEM;
}
xhci->dev.parent = cdns->dev;
cdns->host_dev = xhci;
ret = platform_device_add_resources(xhci, cdns->xhci_res,
usb: cdns3: Refactoring names in reusable code Patch change the functions and objects names in reusable code. The reusable code includes core.c, core.h, drd.c and drd.h files. It also changes the names of all references to these functions and objects in other cdns3 files. There are a lot of changes, but all changes are very trivial. The reason of this patch is to avoid of mixing prefix cdns3 and cdnsp in in cdnsp driver what could introduce some confusion in understanding of cdnsp driver. This patch assumes to use three different prefixes in Cadence USB drivers: cdns: for common reusable code cdnsp: for names related only with cdnsp driver cdns3: for names related only with cdns3 driver Signed-off-by: Pawel Laszczak <pawell@cadence.com> Tested-by: Aswath Govindraju <a-govindraju@ti.com> Signed-off-by: Peter Chen <peter.chen@nxp.com>
2020-12-07 13:32:21 +03:00
CDNS_XHCI_RESOURCES_NUM);
usb: cdns3: Add Cadence USB3 DRD Driver This patch introduce new Cadence USBSS DRD driver to Linux kernel. The Cadence USBSS DRD Controller is a highly configurable IP Core which can be instantiated as Dual-Role Device (DRD), Peripheral Only and Host Only (XHCI)configurations. The current driver has been validated with FPGA platform. We have support for PCIe bus, which is used on FPGA prototyping. The host side of USBSS-DRD controller is compliant with XHCI specification, so it works with standard XHCI Linux driver. Signed-off-by: Pawel Laszczak <pawell@cadence.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2019-08-26 14:19:30 +03:00
if (ret) {
dev_err(cdns->dev, "couldn't add resources to xHCI device\n");
goto err1;
}
usb: cdns3: add quirk for enable runtime pm by default Some vendors (eg: NXP) may want to enable runtime pm by default for power saving, add one quirk for it. Reviewed-by: Jun Li <jun.li@nxp.com> Signed-off-by: Peter Chen <peter.chen@nxp.com>
2020-09-28 10:20:03 +03:00
cdns->xhci_plat_data = kmemdup(&xhci_plat_cdns3_xhci,
sizeof(struct xhci_plat_priv), GFP_KERNEL);
if (!cdns->xhci_plat_data) {
ret = -ENOMEM;
goto err1;
}
usb: cdns3: fix NULL pointer dereference on no platform data Some platforms (e.g. TI) will not have any platform data which will lead to NULL pointer dereference if we don't check for NULL pdata. Fixes: 7cea9657756b ("usb: cdns3: add quirk for enable runtime pm by default") Reported-by: Nishanth Menon <nm@ti.com> Signed-off-by: Roger Quadros <rogerq@ti.com> Acked-by: Pawel Laszczak <pawell@cadence.com> Signed-off-by: Peter Chen <peter.chen@nxp.com>
2020-11-23 13:49:31 +03:00
if (cdns->pdata && (cdns->pdata->quirks & CDNS3_DEFAULT_PM_RUNTIME_ALLOW))
usb: cdns3: add quirk for enable runtime pm by default Some vendors (eg: NXP) may want to enable runtime pm by default for power saving, add one quirk for it. Reviewed-by: Jun Li <jun.li@nxp.com> Signed-off-by: Peter Chen <peter.chen@nxp.com>
2020-09-28 10:20:03 +03:00
cdns->xhci_plat_data->quirks |= XHCI_DEFAULT_PM_RUNTIME_ALLOW;
ret = platform_device_add_data(xhci, cdns->xhci_plat_data,
usb: cdns3: host: add .suspend_quirk for xhci-plat.c cdns3 has some special PM sequence between xhci_bus_suspend and xhci_suspend, add quirk to implement it. Reviewed-by: Pawel Laszczak <pawell@cadence.com> Signed-off-by: Peter Chen <peter.chen@nxp.com>
2020-05-22 12:56:30 +03:00
sizeof(struct xhci_plat_priv));
if (ret)
usb: cdns3: add quirk for enable runtime pm by default Some vendors (eg: NXP) may want to enable runtime pm by default for power saving, add one quirk for it. Reviewed-by: Jun Li <jun.li@nxp.com> Signed-off-by: Peter Chen <peter.chen@nxp.com>
2020-09-28 10:20:03 +03:00
goto free_memory;
usb: cdns3: host: add .suspend_quirk for xhci-plat.c cdns3 has some special PM sequence between xhci_bus_suspend and xhci_suspend, add quirk to implement it. Reviewed-by: Pawel Laszczak <pawell@cadence.com> Signed-off-by: Peter Chen <peter.chen@nxp.com>
2020-05-22 12:56:30 +03:00
usb: cdns3: Add Cadence USB3 DRD Driver This patch introduce new Cadence USBSS DRD driver to Linux kernel. The Cadence USBSS DRD Controller is a highly configurable IP Core which can be instantiated as Dual-Role Device (DRD), Peripheral Only and Host Only (XHCI)configurations. The current driver has been validated with FPGA platform. We have support for PCIe bus, which is used on FPGA prototyping. The host side of USBSS-DRD controller is compliant with XHCI specification, so it works with standard XHCI Linux driver. Signed-off-by: Pawel Laszczak <pawell@cadence.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2019-08-26 14:19:30 +03:00
ret = platform_device_add(xhci);
if (ret) {
dev_err(cdns->dev, "failed to register xHCI device\n");
usb: cdns3: add quirk for enable runtime pm by default Some vendors (eg: NXP) may want to enable runtime pm by default for power saving, add one quirk for it. Reviewed-by: Jun Li <jun.li@nxp.com> Signed-off-by: Peter Chen <peter.chen@nxp.com>
2020-09-28 10:20:03 +03:00
goto free_memory;
usb: cdns3: Add Cadence USB3 DRD Driver This patch introduce new Cadence USBSS DRD driver to Linux kernel. The Cadence USBSS DRD Controller is a highly configurable IP Core which can be instantiated as Dual-Role Device (DRD), Peripheral Only and Host Only (XHCI)configurations. The current driver has been validated with FPGA platform. We have support for PCIe bus, which is used on FPGA prototyping. The host side of USBSS-DRD controller is compliant with XHCI specification, so it works with standard XHCI Linux driver. Signed-off-by: Pawel Laszczak <pawell@cadence.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2019-08-26 14:19:30 +03:00
}
usb: cdns3: add runtime PM support Introduce runtime PM and wakeup interrupt handler for cdns3, the runtime PM is default off since other cdns3 may not implement glue layer support for runtime PM. One typical wakeup event use case is xHCI runtime suspend will clear USBCMD.RS bit, after that the xHCI will not trigger any interrupts, so its parent (cdns core device) needs to resume xHCI device when any (wakeup) events occurs at host port. When the controller is in low power mode, the lpm flag will be set. The interrupt triggered later than lpm flag is set considers as wakeup interrupt and handled at cdns_wakeup_irq. Once the wakeup occurs, it first disables interrupt to avoid later interrupt occurrence since the controller is in low power mode at that time, and access registers may be invalid at that time. At wakeup handler, it will call pm_request_resume to wakeup xHCI device, and at runtime resume handler, it will enable interrupt again. The API platform_suspend is introduced for glue layer to implement platform specific PM sequence. Reviewed-by: Pawel Laszczak <pawell@cadence.com> Signed-off-by: Peter Chen <peter.chen@nxp.com> Signed-off-by: Felipe Balbi <balbi@kernel.org>
2020-09-02 12:57:32 +03:00
/* Glue needs to access xHCI region register for Power management */
hcd = platform_get_drvdata(xhci);
if (hcd)
cdns->xhci_regs = hcd->regs;
usb: cdns3: Add Cadence USB3 DRD Driver This patch introduce new Cadence USBSS DRD driver to Linux kernel. The Cadence USBSS DRD Controller is a highly configurable IP Core which can be instantiated as Dual-Role Device (DRD), Peripheral Only and Host Only (XHCI)configurations. The current driver has been validated with FPGA platform. We have support for PCIe bus, which is used on FPGA prototyping. The host side of USBSS-DRD controller is compliant with XHCI specification, so it works with standard XHCI Linux driver. Signed-off-by: Pawel Laszczak <pawell@cadence.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2019-08-26 14:19:30 +03:00
return 0;
usb: cdns3: add quirk for enable runtime pm by default Some vendors (eg: NXP) may want to enable runtime pm by default for power saving, add one quirk for it. Reviewed-by: Jun Li <jun.li@nxp.com> Signed-off-by: Peter Chen <peter.chen@nxp.com>
2020-09-28 10:20:03 +03:00
free_memory:
kfree(cdns->xhci_plat_data);
usb: cdns3: Add Cadence USB3 DRD Driver This patch introduce new Cadence USBSS DRD driver to Linux kernel. The Cadence USBSS DRD Controller is a highly configurable IP Core which can be instantiated as Dual-Role Device (DRD), Peripheral Only and Host Only (XHCI)configurations. The current driver has been validated with FPGA platform. We have support for PCIe bus, which is used on FPGA prototyping. The host side of USBSS-DRD controller is compliant with XHCI specification, so it works with standard XHCI Linux driver. Signed-off-by: Pawel Laszczak <pawell@cadence.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2019-08-26 14:19:30 +03:00
err1:
platform_device_put(xhci);
return ret;
}
usb: cdns3: Removes xhci_cdns3_suspend_quirk from host-export.h Function xhci_cdns3_suspend_quirk is used only in host.c file. We can make it as static and removes it from host-export.h. Signed-off-by: Pawel Laszczak <pawell@cadence.com> Acked-by: Roger Quadros <rogerq@ti.com> Signed-off-by: Peter Chen <peter.chen@nxp.com>
2020-12-11 08:09:54 +03:00
static int xhci_cdns3_suspend_quirk(struct usb_hcd *hcd)
usb: cdns3: host: add .suspend_quirk for xhci-plat.c cdns3 has some special PM sequence between xhci_bus_suspend and xhci_suspend, add quirk to implement it. Reviewed-by: Pawel Laszczak <pawell@cadence.com> Signed-off-by: Peter Chen <peter.chen@nxp.com>
2020-05-22 12:56:30 +03:00
{
struct xhci_hcd *xhci = hcd_to_xhci(hcd);
u32 value;
if (pm_runtime_status_suspended(hcd->self.controller))
return 0;
/* set usbcmd.EU3S */
value = readl(&xhci->op_regs->command);
value |= CMD_PM_INDEX;
writel(value, &xhci->op_regs->command);
if (hcd->regs) {
value = readl(hcd->regs + XECP_AUX_CTRL_REG1);
value |= CFG_RXDET_P3_EN;
writel(value, hcd->regs + XECP_AUX_CTRL_REG1);
value = readl(hcd->regs + XECP_PORT_CAP_REG);
value |= LPM_2_STB_SWITCH_EN;
writel(value, hcd->regs + XECP_PORT_CAP_REG);
}
return 0;
}
usb: cdns3: Refactoring names in reusable code Patch change the functions and objects names in reusable code. The reusable code includes core.c, core.h, drd.c and drd.h files. It also changes the names of all references to these functions and objects in other cdns3 files. There are a lot of changes, but all changes are very trivial. The reason of this patch is to avoid of mixing prefix cdns3 and cdnsp in in cdnsp driver what could introduce some confusion in understanding of cdnsp driver. This patch assumes to use three different prefixes in Cadence USB drivers: cdns: for common reusable code cdnsp: for names related only with cdnsp driver cdns3: for names related only with cdns3 driver Signed-off-by: Pawel Laszczak <pawell@cadence.com> Tested-by: Aswath Govindraju <a-govindraju@ti.com> Signed-off-by: Peter Chen <peter.chen@nxp.com>
2020-12-07 13:32:21 +03:00
static void cdns_host_exit(struct cdns *cdns)
usb: cdns3: Add Cadence USB3 DRD Driver This patch introduce new Cadence USBSS DRD driver to Linux kernel. The Cadence USBSS DRD Controller is a highly configurable IP Core which can be instantiated as Dual-Role Device (DRD), Peripheral Only and Host Only (XHCI)configurations. The current driver has been validated with FPGA platform. We have support for PCIe bus, which is used on FPGA prototyping. The host side of USBSS-DRD controller is compliant with XHCI specification, so it works with standard XHCI Linux driver. Signed-off-by: Pawel Laszczak <pawell@cadence.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2019-08-26 14:19:30 +03:00
{
usb: cdns3: add quirk for enable runtime pm by default Some vendors (eg: NXP) may want to enable runtime pm by default for power saving, add one quirk for it. Reviewed-by: Jun Li <jun.li@nxp.com> Signed-off-by: Peter Chen <peter.chen@nxp.com>
2020-09-28 10:20:03 +03:00
kfree(cdns->xhci_plat_data);
usb: cdns3: Add Cadence USB3 DRD Driver This patch introduce new Cadence USBSS DRD driver to Linux kernel. The Cadence USBSS DRD Controller is a highly configurable IP Core which can be instantiated as Dual-Role Device (DRD), Peripheral Only and Host Only (XHCI)configurations. The current driver has been validated with FPGA platform. We have support for PCIe bus, which is used on FPGA prototyping. The host side of USBSS-DRD controller is compliant with XHCI specification, so it works with standard XHCI Linux driver. Signed-off-by: Pawel Laszczak <pawell@cadence.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2019-08-26 14:19:30 +03:00
platform_device_unregister(cdns->host_dev);
cdns->host_dev = NULL;
usb: cdns3: Refactoring names in reusable code Patch change the functions and objects names in reusable code. The reusable code includes core.c, core.h, drd.c and drd.h files. It also changes the names of all references to these functions and objects in other cdns3 files. There are a lot of changes, but all changes are very trivial. The reason of this patch is to avoid of mixing prefix cdns3 and cdnsp in in cdnsp driver what could introduce some confusion in understanding of cdnsp driver. This patch assumes to use three different prefixes in Cadence USB drivers: cdns: for common reusable code cdnsp: for names related only with cdnsp driver cdns3: for names related only with cdns3 driver Signed-off-by: Pawel Laszczak <pawell@cadence.com> Tested-by: Aswath Govindraju <a-govindraju@ti.com> Signed-off-by: Peter Chen <peter.chen@nxp.com>
2020-12-07 13:32:21 +03:00
cdns_drd_host_off(cdns);
usb: cdns3: Add Cadence USB3 DRD Driver This patch introduce new Cadence USBSS DRD driver to Linux kernel. The Cadence USBSS DRD Controller is a highly configurable IP Core which can be instantiated as Dual-Role Device (DRD), Peripheral Only and Host Only (XHCI)configurations. The current driver has been validated with FPGA platform. We have support for PCIe bus, which is used on FPGA prototyping. The host side of USBSS-DRD controller is compliant with XHCI specification, so it works with standard XHCI Linux driver. Signed-off-by: Pawel Laszczak <pawell@cadence.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2019-08-26 14:19:30 +03:00
}
usb: cdns3: Refactoring names in reusable code Patch change the functions and objects names in reusable code. The reusable code includes core.c, core.h, drd.c and drd.h files. It also changes the names of all references to these functions and objects in other cdns3 files. There are a lot of changes, but all changes are very trivial. The reason of this patch is to avoid of mixing prefix cdns3 and cdnsp in in cdnsp driver what could introduce some confusion in understanding of cdnsp driver. This patch assumes to use three different prefixes in Cadence USB drivers: cdns: for common reusable code cdnsp: for names related only with cdnsp driver cdns3: for names related only with cdns3 driver Signed-off-by: Pawel Laszczak <pawell@cadence.com> Tested-by: Aswath Govindraju <a-govindraju@ti.com> Signed-off-by: Peter Chen <peter.chen@nxp.com>
2020-12-07 13:32:21 +03:00
int cdns_host_init(struct cdns *cdns)
usb: cdns3: Add Cadence USB3 DRD Driver This patch introduce new Cadence USBSS DRD driver to Linux kernel. The Cadence USBSS DRD Controller is a highly configurable IP Core which can be instantiated as Dual-Role Device (DRD), Peripheral Only and Host Only (XHCI)configurations. The current driver has been validated with FPGA platform. We have support for PCIe bus, which is used on FPGA prototyping. The host side of USBSS-DRD controller is compliant with XHCI specification, so it works with standard XHCI Linux driver. Signed-off-by: Pawel Laszczak <pawell@cadence.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2019-08-26 14:19:30 +03:00
{
usb: cdns3: Refactoring names in reusable code Patch change the functions and objects names in reusable code. The reusable code includes core.c, core.h, drd.c and drd.h files. It also changes the names of all references to these functions and objects in other cdns3 files. There are a lot of changes, but all changes are very trivial. The reason of this patch is to avoid of mixing prefix cdns3 and cdnsp in in cdnsp driver what could introduce some confusion in understanding of cdnsp driver. This patch assumes to use three different prefixes in Cadence USB drivers: cdns: for common reusable code cdnsp: for names related only with cdnsp driver cdns3: for names related only with cdns3 driver Signed-off-by: Pawel Laszczak <pawell@cadence.com> Tested-by: Aswath Govindraju <a-govindraju@ti.com> Signed-off-by: Peter Chen <peter.chen@nxp.com>
2020-12-07 13:32:21 +03:00
struct cdns_role_driver *rdrv;
usb: cdns3: Add Cadence USB3 DRD Driver This patch introduce new Cadence USBSS DRD driver to Linux kernel. The Cadence USBSS DRD Controller is a highly configurable IP Core which can be instantiated as Dual-Role Device (DRD), Peripheral Only and Host Only (XHCI)configurations. The current driver has been validated with FPGA platform. We have support for PCIe bus, which is used on FPGA prototyping. The host side of USBSS-DRD controller is compliant with XHCI specification, so it works with standard XHCI Linux driver. Signed-off-by: Pawel Laszczak <pawell@cadence.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2019-08-26 14:19:30 +03:00
rdrv = devm_kzalloc(cdns->dev, sizeof(*rdrv), GFP_KERNEL);
if (!rdrv)
return -ENOMEM;
usb: cdns3: Refactoring names in reusable code Patch change the functions and objects names in reusable code. The reusable code includes core.c, core.h, drd.c and drd.h files. It also changes the names of all references to these functions and objects in other cdns3 files. There are a lot of changes, but all changes are very trivial. The reason of this patch is to avoid of mixing prefix cdns3 and cdnsp in in cdnsp driver what could introduce some confusion in understanding of cdnsp driver. This patch assumes to use three different prefixes in Cadence USB drivers: cdns: for common reusable code cdnsp: for names related only with cdnsp driver cdns3: for names related only with cdns3 driver Signed-off-by: Pawel Laszczak <pawell@cadence.com> Tested-by: Aswath Govindraju <a-govindraju@ti.com> Signed-off-by: Peter Chen <peter.chen@nxp.com>
2020-12-07 13:32:21 +03:00
rdrv->start = __cdns_host_init;
rdrv->stop = cdns_host_exit;
rdrv->state = CDNS_ROLE_STATE_INACTIVE;
usb: cdns3: Add Cadence USB3 DRD Driver This patch introduce new Cadence USBSS DRD driver to Linux kernel. The Cadence USBSS DRD Controller is a highly configurable IP Core which can be instantiated as Dual-Role Device (DRD), Peripheral Only and Host Only (XHCI)configurations. The current driver has been validated with FPGA platform. We have support for PCIe bus, which is used on FPGA prototyping. The host side of USBSS-DRD controller is compliant with XHCI specification, so it works with standard XHCI Linux driver. Signed-off-by: Pawel Laszczak <pawell@cadence.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2019-08-26 14:19:30 +03:00
rdrv->name = "host";
cdns->roles[USB_ROLE_HOST] = rdrv;
return 0;
}
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