From: Martin Blumenstingl <martin.blumenstingl-gM/Ye1E23mwN+BqQ9rBEUg@public.gmane.org> To: linux-usb-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, gregkh-hQyY1W1yCW8ekmWlsbkhG0B+6BGkLq7r@public.gmane.org, felipe.balbi-VuQAYsv1563Yd54FQh9/CA@public.gmane.org, mathias.nyman-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org Cc: robh+dt-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org, devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, mark.rutland-5wv7dgnIgG8@public.gmane.org, arnd-r2nGTMty4D4@public.gmane.org, linux-amlogic-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org, chunfeng.yun-NuS5LvNUpcJWk0Htik3J/w@public.gmane.org, Martin Blumenstingl <martin.blumenstingl-gM/Ye1E23mwN+BqQ9rBEUg@public.gmane.org> Subject: [PATCH v4 3/3] usb: host: xhci: plat: integrate the platform-roothub Date: Sun, 3 Sep 2017 23:38:29 +0200 [thread overview] Message-ID: <20170903213829.6589-4-martin.blumenstingl@googlemail.com> (raw) In-Reply-To: <20170903213829.6589-1-martin.blumenstingl-gM/Ye1E23mwN+BqQ9rBEUg@public.gmane.org> This enables the platform-roothub for the xhci-plat driver. This allows specifying a PHY for each port via devicetree. All PHYs will then be enabled/disabled by the platform-roothub driver. One example where this is required is the Amlogic GXL and GXM SoCs: They are using a dwc3 USB controller with up to three ports enabled on the internal roothub. Using only the top-level "phy" properties does not work here since one can only specify one "usb2-phy" and one "usb3-phy", while actually at least two "usb2-phy" have to be specified. Signed-off-by: Martin Blumenstingl <martin.blumenstingl-gM/Ye1E23mwN+BqQ9rBEUg@public.gmane.org> Acked-by: Rob Herring <robh-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org> --- drivers/usb/host/Kconfig | 1 + drivers/usb/host/xhci-plat.c | 35 +++++++++++++++++++++++++++++++++-- drivers/usb/host/xhci.h | 2 ++ 3 files changed, 36 insertions(+), 2 deletions(-) diff --git a/drivers/usb/host/Kconfig b/drivers/usb/host/Kconfig index b8b05c786b2a..3bdc49e89c0f 100644 --- a/drivers/usb/host/Kconfig +++ b/drivers/usb/host/Kconfig @@ -36,6 +36,7 @@ config USB_XHCI_PCI config USB_XHCI_PLATFORM tristate "Generic xHCI driver for a platform device" select USB_XHCI_RCAR if ARCH_RENESAS + select USB_PLATFORM_ROOTHUB ---help--- Adds an xHCI host driver for a generic platform device, which provides a memory space and an irq. diff --git a/drivers/usb/host/xhci-plat.c b/drivers/usb/host/xhci-plat.c index 163bafde709f..2c6ab3912443 100644 --- a/drivers/usb/host/xhci-plat.c +++ b/drivers/usb/host/xhci-plat.c @@ -21,6 +21,7 @@ #include <linux/slab.h> #include <linux/acpi.h> +#include "platform-roothub.h" #include "xhci.h" #include "xhci-plat.h" #include "xhci-mvebu.h" @@ -277,9 +278,19 @@ static int xhci_plat_probe(struct platform_device *pdev) goto put_usb3_hcd; } + xhci->platform_roothub = platform_roothub_init(sysdev); + if (IS_ERR(xhci->platform_roothub)) { + ret = PTR_ERR(xhci->platform_roothub); + goto disable_usb_phy; + } + + ret = platform_roothub_power_on(xhci->platform_roothub); + if (ret) + goto exit_plat_roothub; + ret = usb_add_hcd(hcd, irq, IRQF_SHARED); if (ret) - goto disable_usb_phy; + goto disable_plat_roothub; if (HCC_MAX_PSA(xhci->hcc_params) >= 4) xhci->shared_hcd->can_do_streams = 1; @@ -303,6 +314,12 @@ static int xhci_plat_probe(struct platform_device *pdev) dealloc_usb2_hcd: usb_remove_hcd(hcd); +disable_plat_roothub: + platform_roothub_power_off(xhci->platform_roothub); + +exit_plat_roothub: + platform_roothub_exit(xhci->platform_roothub); + disable_usb_phy: usb_phy_shutdown(hcd->usb_phy); @@ -334,6 +351,9 @@ static int xhci_plat_remove(struct platform_device *dev) usb_remove_hcd(xhci->shared_hcd); usb_phy_shutdown(hcd->usb_phy); + platform_roothub_power_off(xhci->platform_roothub); + platform_roothub_exit(xhci->platform_roothub); + usb_remove_hcd(hcd); usb_put_hcd(xhci->shared_hcd); @@ -366,7 +386,14 @@ static int __maybe_unused xhci_plat_suspend(struct device *dev) if (!device_may_wakeup(dev) && !IS_ERR(xhci->clk)) clk_disable_unprepare(xhci->clk); - return ret; + if (ret) + return ret; + + ret = platform_roothub_power_off(xhci->platform_roothub); + if (ret) + return ret; + + return 0; } static int __maybe_unused xhci_plat_resume(struct device *dev) @@ -378,6 +405,10 @@ static int __maybe_unused xhci_plat_resume(struct device *dev) if (!device_may_wakeup(dev) && !IS_ERR(xhci->clk)) clk_prepare_enable(xhci->clk); + ret = platform_roothub_power_on(xhci->platform_roothub); + if (ret) + return ret; + ret = xhci_priv_resume_quirk(hcd); if (ret) return ret; diff --git a/drivers/usb/host/xhci.h b/drivers/usb/host/xhci.h index 2abaa4d6d39d..c75c3247a441 100644 --- a/drivers/usb/host/xhci.h +++ b/drivers/usb/host/xhci.h @@ -1732,6 +1732,8 @@ struct xhci_hcd { int msix_count; /* optional clock */ struct clk *clk; + /* optional platform root-hub */ + struct platform_roothub *platform_roothub; /* data structures */ struct xhci_device_context_array *dcbaa; struct xhci_ring *cmd_ring; -- 2.14.1 -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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From: martin.blumenstingl@googlemail.com (Martin Blumenstingl) To: linus-amlogic@lists.infradead.org Subject: [PATCH v4 3/3] usb: host: xhci: plat: integrate the platform-roothub Date: Sun, 3 Sep 2017 23:38:29 +0200 [thread overview] Message-ID: <20170903213829.6589-4-martin.blumenstingl@googlemail.com> (raw) In-Reply-To: <20170903213829.6589-1-martin.blumenstingl@googlemail.com> This enables the platform-roothub for the xhci-plat driver. This allows specifying a PHY for each port via devicetree. All PHYs will then be enabled/disabled by the platform-roothub driver. One example where this is required is the Amlogic GXL and GXM SoCs: They are using a dwc3 USB controller with up to three ports enabled on the internal roothub. Using only the top-level "phy" properties does not work here since one can only specify one "usb2-phy" and one "usb3-phy", while actually at least two "usb2-phy" have to be specified. Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com> Acked-by: Rob Herring <robh@kernel.org> --- drivers/usb/host/Kconfig | 1 + drivers/usb/host/xhci-plat.c | 35 +++++++++++++++++++++++++++++++++-- drivers/usb/host/xhci.h | 2 ++ 3 files changed, 36 insertions(+), 2 deletions(-) diff --git a/drivers/usb/host/Kconfig b/drivers/usb/host/Kconfig index b8b05c786b2a..3bdc49e89c0f 100644 --- a/drivers/usb/host/Kconfig +++ b/drivers/usb/host/Kconfig @@ -36,6 +36,7 @@ config USB_XHCI_PCI config USB_XHCI_PLATFORM tristate "Generic xHCI driver for a platform device" select USB_XHCI_RCAR if ARCH_RENESAS + select USB_PLATFORM_ROOTHUB ---help--- Adds an xHCI host driver for a generic platform device, which provides a memory space and an irq. diff --git a/drivers/usb/host/xhci-plat.c b/drivers/usb/host/xhci-plat.c index 163bafde709f..2c6ab3912443 100644 --- a/drivers/usb/host/xhci-plat.c +++ b/drivers/usb/host/xhci-plat.c @@ -21,6 +21,7 @@ #include <linux/slab.h> #include <linux/acpi.h> +#include "platform-roothub.h" #include "xhci.h" #include "xhci-plat.h" #include "xhci-mvebu.h" @@ -277,9 +278,19 @@ static int xhci_plat_probe(struct platform_device *pdev) goto put_usb3_hcd; } + xhci->platform_roothub = platform_roothub_init(sysdev); + if (IS_ERR(xhci->platform_roothub)) { + ret = PTR_ERR(xhci->platform_roothub); + goto disable_usb_phy; + } + + ret = platform_roothub_power_on(xhci->platform_roothub); + if (ret) + goto exit_plat_roothub; + ret = usb_add_hcd(hcd, irq, IRQF_SHARED); if (ret) - goto disable_usb_phy; + goto disable_plat_roothub; if (HCC_MAX_PSA(xhci->hcc_params) >= 4) xhci->shared_hcd->can_do_streams = 1; @@ -303,6 +314,12 @@ static int xhci_plat_probe(struct platform_device *pdev) dealloc_usb2_hcd: usb_remove_hcd(hcd); +disable_plat_roothub: + platform_roothub_power_off(xhci->platform_roothub); + +exit_plat_roothub: + platform_roothub_exit(xhci->platform_roothub); + disable_usb_phy: usb_phy_shutdown(hcd->usb_phy); @@ -334,6 +351,9 @@ static int xhci_plat_remove(struct platform_device *dev) usb_remove_hcd(xhci->shared_hcd); usb_phy_shutdown(hcd->usb_phy); + platform_roothub_power_off(xhci->platform_roothub); + platform_roothub_exit(xhci->platform_roothub); + usb_remove_hcd(hcd); usb_put_hcd(xhci->shared_hcd); @@ -366,7 +386,14 @@ static int __maybe_unused xhci_plat_suspend(struct device *dev) if (!device_may_wakeup(dev) && !IS_ERR(xhci->clk)) clk_disable_unprepare(xhci->clk); - return ret; + if (ret) + return ret; + + ret = platform_roothub_power_off(xhci->platform_roothub); + if (ret) + return ret; + + return 0; } static int __maybe_unused xhci_plat_resume(struct device *dev) @@ -378,6 +405,10 @@ static int __maybe_unused xhci_plat_resume(struct device *dev) if (!device_may_wakeup(dev) && !IS_ERR(xhci->clk)) clk_prepare_enable(xhci->clk); + ret = platform_roothub_power_on(xhci->platform_roothub); + if (ret) + return ret; + ret = xhci_priv_resume_quirk(hcd); if (ret) return ret; diff --git a/drivers/usb/host/xhci.h b/drivers/usb/host/xhci.h index 2abaa4d6d39d..c75c3247a441 100644 --- a/drivers/usb/host/xhci.h +++ b/drivers/usb/host/xhci.h @@ -1732,6 +1732,8 @@ struct xhci_hcd { int msix_count; /* optional clock */ struct clk *clk; + /* optional platform root-hub */ + struct platform_roothub *platform_roothub; /* data structures */ struct xhci_device_context_array *dcbaa; struct xhci_ring *cmd_ring; -- 2.14.1
next prev parent reply other threads:[~2017-09-03 21:38 UTC|newest] Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top 2017-09-03 21:38 [PATCH v4 0/3] initialize (multiple) PHYs in xhci-plat Martin Blumenstingl 2017-09-03 21:38 ` Martin Blumenstingl [not found] ` <20170903213829.6589-1-martin.blumenstingl-gM/Ye1E23mwN+BqQ9rBEUg@public.gmane.org> 2017-09-03 21:38 ` [PATCH v4 1/3] dt-bindings: usb: add the documentation for USB root-hub Martin Blumenstingl 2017-09-03 21:38 ` Martin Blumenstingl 2017-09-03 21:38 ` [PATCH v4 2/3] usb: host: add a generic platform USB roothub driver Martin Blumenstingl 2017-09-03 21:38 ` Martin Blumenstingl [not found] ` <20170903213829.6589-3-martin.blumenstingl-gM/Ye1E23mwN+BqQ9rBEUg@public.gmane.org> 2017-10-04 13:05 ` Mathias Nyman 2017-10-04 13:05 ` Mathias Nyman [not found] ` <59D4DC7E.6040003-VuQAYsv1563Yd54FQh9/CA@public.gmane.org> 2017-10-07 17:08 ` Martin Blumenstingl 2017-10-07 17:08 ` Martin Blumenstingl [not found] ` <CAFBinCAerqdvhsTkLLd2t9W3d04F5wzQk5Zo2+h+HOHLdDeQZw-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org> 2017-10-09 13:43 ` Mathias Nyman 2017-10-09 13:43 ` Mathias Nyman 2017-09-03 21:38 ` Martin Blumenstingl [this message] 2017-09-03 21:38 ` [PATCH v4 3/3] usb: host: xhci: plat: integrate the platform-roothub Martin Blumenstingl 2017-09-17 20:51 ` [PATCH v4 0/3] initialize (multiple) PHYs in xhci-plat Martin Blumenstingl 2017-09-17 20:51 ` Martin Blumenstingl [not found] ` <CAFBinCCRM1e08styDV8uodkhonTUPyZrQAdYRz_bfUMe-YP1Rg-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org> 2017-09-18 8:49 ` Greg KH 2017-09-18 8:49 ` Greg KH [not found] ` <20170918084943.GA19123-U8xfFu+wG4EAvxtiuMwx3w@public.gmane.org> 2017-10-01 20:32 ` Martin Blumenstingl 2017-10-01 20:32 ` Martin Blumenstingl [not found] ` <CAFBinCAweHXFbWrF9gW5f_+NeC9jChU1EkRsiLzkaKtOZkEREQ-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org> 2017-10-02 12:35 ` Jerome Brunet 2017-10-02 12:35 ` Jerome Brunet [not found] ` <1506947708.17300.21.camel-rdvid1DuHRBWk0Htik3J/w@public.gmane.org> 2017-10-02 12:44 ` Greg KH 2017-10-02 12:44 ` Greg KH [not found] ` <20171002124421.GA2324-U8xfFu+wG4EAvxtiuMwx3w@public.gmane.org> 2017-10-02 23:18 ` Martin Blumenstingl 2017-10-02 23:18 ` Martin Blumenstingl 2017-10-03 8:15 ` Jerome Brunet 2017-10-03 8:15 ` Jerome Brunet
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