From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755395Ab3JGKM4 (ORCPT ); Mon, 7 Oct 2013 06:12:56 -0400 Received: from mail-ie0-f174.google.com ([209.85.223.174]:54449 "EHLO mail-ie0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755256Ab3JGKMr (ORCPT ); Mon, 7 Oct 2013 06:12:47 -0400 From: Matt Porter To: Felipe Balbi , Greg Kroah-Hartman , Rob Herring , Pawel Moll , Mark Rutland , Stephen Warren , Ian Campbell , Christian Daudt Cc: Paul Zimmerman , Linux USB List , Linux ARM Kernel List , Linux Kernel Mailing List , Devicetree List , Linaro Patches Subject: [PATCH 4/5] usb: phy: add Broadcom Kona USB PHY driver Date: Mon, 7 Oct 2013 06:12:31 -0400 Message-Id: <1381140752-312-5-git-send-email-matt.porter@linaro.org> X-Mailer: git-send-email 1.8.4 In-Reply-To: <1381140752-312-1-git-send-email-matt.porter@linaro.org> References: <1381140752-312-1-git-send-email-matt.porter@linaro.org> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Add a USB PHY driver for BCM281xx devices. This driver makes use of the Broadcom Kona USB control driver to control init/shutdown of the PHY. Signed-off-by: Matt Porter Reviewed-by: Markus Mayer Reviewed-by: Tim Kryger --- .../devicetree/bindings/usb/bcm-kona-usb-phy.txt | 10 +++ drivers/usb/phy/Kconfig | 7 ++ drivers/usb/phy/Makefile | 1 + drivers/usb/phy/phy-bcm-kona-usb2.c | 99 ++++++++++++++++++++++ 4 files changed, 117 insertions(+) create mode 100644 Documentation/devicetree/bindings/usb/bcm-kona-usb-phy.txt create mode 100644 drivers/usb/phy/phy-bcm-kona-usb2.c diff --git a/Documentation/devicetree/bindings/usb/bcm-kona-usb-phy.txt b/Documentation/devicetree/bindings/usb/bcm-kona-usb-phy.txt new file mode 100644 index 0000000..a935fe2 --- /dev/null +++ b/Documentation/devicetree/bindings/usb/bcm-kona-usb-phy.txt @@ -0,0 +1,10 @@ +BROADCOM KONA USB PHY + +Required properties: + - compatible: brcm,kona-usb2 + +Example: + + usbphy: usbphy { + compatible = "brcm,kona-usb2"; + }; diff --git a/drivers/usb/phy/Kconfig b/drivers/usb/phy/Kconfig index 2b7b4f1..d063204 100644 --- a/drivers/usb/phy/Kconfig +++ b/drivers/usb/phy/Kconfig @@ -105,6 +105,13 @@ config BCM_KONA_CTRL_USB help Enable this to support the Broadcom Kona USB control block +config BCM_KONA_PHY_USB2 + tristate "Broadcom Kona USB2 PHY Driver" + select USB_PHY + select BCM_KONA_CTRL_USB + help + Enable this to support the Broadcom Kona USB 2.0 PHY. + config SAMSUNG_USBPHY tristate help diff --git a/drivers/usb/phy/Makefile b/drivers/usb/phy/Makefile index 98c545e..227fba5 100644 --- a/drivers/usb/phy/Makefile +++ b/drivers/usb/phy/Makefile @@ -16,6 +16,7 @@ obj-$(CONFIG_OMAP_CONTROL_USB) += phy-omap-control.o obj-$(CONFIG_AM335X_CONTROL_USB) += phy-am335x-control.o obj-$(CONFIG_AM335X_PHY_USB) += phy-am335x.o obj-$(CONFIG_BCM_KONA_CTRL_USB) += phy-bcm-kona-ctrl.o +obj-$(CONFIG_BCM_KONA_PHY_USB2) += phy-bcm-kona-usb2.o obj-$(CONFIG_OMAP_USB2) += phy-omap-usb2.o obj-$(CONFIG_OMAP_USB3) += phy-omap-usb3.o obj-$(CONFIG_SAMSUNG_USBPHY) += phy-samsung-usb.o diff --git a/drivers/usb/phy/phy-bcm-kona-usb2.c b/drivers/usb/phy/phy-bcm-kona-usb2.c new file mode 100644 index 0000000..21aee4a --- /dev/null +++ b/drivers/usb/phy/phy-bcm-kona-usb2.c @@ -0,0 +1,99 @@ +/* + * phy-bcm-kona-control.c - Broadcom Kona USB2 Phy Driver + * + * Copyright (C) 2013 Linaro Limited + * Matt Porter + * + * This software is licensed under the terms of the GNU General Public + * License version 2, as published by the Free Software Foundation, and + * may be copied, distributed, and modified under those terms. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include +#include +#include + +#include "bcm-kona-usb.h" + +static int bcm_kona_phy_init(struct usb_phy *uphy) +{ + struct bcm_kona_usb *phy = dev_get_drvdata(uphy->dev); + + bcm_kona_ctrl_usb_phy_power(phy->ctrl_dev, 1); + + return 0; +} + +static void bcm_kona_phy_shutdown(struct usb_phy *uphy) +{ + struct bcm_kona_usb *phy = dev_get_drvdata(uphy->dev); + + bcm_kona_ctrl_usb_phy_power(phy->ctrl_dev, 0); +} + +static int bcm_kona_usb2_probe(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + struct bcm_kona_usb *phy; + + phy = devm_kzalloc(dev, sizeof(*phy), GFP_KERNEL); + if (!phy) + return -ENOMEM; + + phy->ctrl_dev = bcm_kona_get_ctrl_dev(); + if (IS_ERR(phy->ctrl_dev)) { + dev_dbg(&pdev->dev, "Failed to get control device\n"); + return -ENODEV; + } + + phy->dev = dev; + phy->phy.dev = phy->dev; + phy->phy.label = "bcm-kona-usb2"; + phy->phy.init = bcm_kona_phy_init; + phy->phy.shutdown = bcm_kona_phy_shutdown; + phy->phy.type = USB_PHY_TYPE_USB2; + + platform_set_drvdata(pdev, phy); + + usb_add_phy_dev(&phy->phy); + + return 0; +} + +static int bcm_kona_usb2_remove(struct platform_device *pdev) +{ + struct bcm_kona_usb *phy = platform_get_drvdata(pdev); + + usb_remove_phy(&phy->phy); + + return 0; +} + +static const struct of_device_id bcm_kona_usb2_dt_ids[] = { + { .compatible = "brcm,kona-usb2" }, + { /* sentinel */ } +}; + +MODULE_DEVICE_TABLE(of, bcm_kona_usb2_dt_ids); + +static struct platform_driver bcm_kona_usb2_driver = { + .probe = bcm_kona_usb2_probe, + .remove = bcm_kona_usb2_remove, + .driver = { + .name = "bcm-kona-usb2", + .owner = THIS_MODULE, + .of_match_table = bcm_kona_usb2_dt_ids, + }, +}; + +module_platform_driver(bcm_kona_usb2_driver); + +MODULE_ALIAS("platform:bcm-kona-usb2"); +MODULE_AUTHOR("Matt Porter"); +MODULE_DESCRIPTION("BCM Kona USB 2.0 PHY driver"); +MODULE_LICENSE("GPL v2"); -- 1.8.4 From mboxrd@z Thu Jan 1 00:00:00 1970 From: matt.porter@linaro.org (Matt Porter) Date: Mon, 7 Oct 2013 06:12:31 -0400 Subject: [PATCH 4/5] usb: phy: add Broadcom Kona USB PHY driver In-Reply-To: <1381140752-312-1-git-send-email-matt.porter@linaro.org> References: <1381140752-312-1-git-send-email-matt.porter@linaro.org> Message-ID: <1381140752-312-5-git-send-email-matt.porter@linaro.org> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org Add a USB PHY driver for BCM281xx devices. This driver makes use of the Broadcom Kona USB control driver to control init/shutdown of the PHY. Signed-off-by: Matt Porter Reviewed-by: Markus Mayer Reviewed-by: Tim Kryger --- .../devicetree/bindings/usb/bcm-kona-usb-phy.txt | 10 +++ drivers/usb/phy/Kconfig | 7 ++ drivers/usb/phy/Makefile | 1 + drivers/usb/phy/phy-bcm-kona-usb2.c | 99 ++++++++++++++++++++++ 4 files changed, 117 insertions(+) create mode 100644 Documentation/devicetree/bindings/usb/bcm-kona-usb-phy.txt create mode 100644 drivers/usb/phy/phy-bcm-kona-usb2.c diff --git a/Documentation/devicetree/bindings/usb/bcm-kona-usb-phy.txt b/Documentation/devicetree/bindings/usb/bcm-kona-usb-phy.txt new file mode 100644 index 0000000..a935fe2 --- /dev/null +++ b/Documentation/devicetree/bindings/usb/bcm-kona-usb-phy.txt @@ -0,0 +1,10 @@ +BROADCOM KONA USB PHY + +Required properties: + - compatible: brcm,kona-usb2 + +Example: + + usbphy: usbphy { + compatible = "brcm,kona-usb2"; + }; diff --git a/drivers/usb/phy/Kconfig b/drivers/usb/phy/Kconfig index 2b7b4f1..d063204 100644 --- a/drivers/usb/phy/Kconfig +++ b/drivers/usb/phy/Kconfig @@ -105,6 +105,13 @@ config BCM_KONA_CTRL_USB help Enable this to support the Broadcom Kona USB control block +config BCM_KONA_PHY_USB2 + tristate "Broadcom Kona USB2 PHY Driver" + select USB_PHY + select BCM_KONA_CTRL_USB + help + Enable this to support the Broadcom Kona USB 2.0 PHY. + config SAMSUNG_USBPHY tristate help diff --git a/drivers/usb/phy/Makefile b/drivers/usb/phy/Makefile index 98c545e..227fba5 100644 --- a/drivers/usb/phy/Makefile +++ b/drivers/usb/phy/Makefile @@ -16,6 +16,7 @@ obj-$(CONFIG_OMAP_CONTROL_USB) += phy-omap-control.o obj-$(CONFIG_AM335X_CONTROL_USB) += phy-am335x-control.o obj-$(CONFIG_AM335X_PHY_USB) += phy-am335x.o obj-$(CONFIG_BCM_KONA_CTRL_USB) += phy-bcm-kona-ctrl.o +obj-$(CONFIG_BCM_KONA_PHY_USB2) += phy-bcm-kona-usb2.o obj-$(CONFIG_OMAP_USB2) += phy-omap-usb2.o obj-$(CONFIG_OMAP_USB3) += phy-omap-usb3.o obj-$(CONFIG_SAMSUNG_USBPHY) += phy-samsung-usb.o diff --git a/drivers/usb/phy/phy-bcm-kona-usb2.c b/drivers/usb/phy/phy-bcm-kona-usb2.c new file mode 100644 index 0000000..21aee4a --- /dev/null +++ b/drivers/usb/phy/phy-bcm-kona-usb2.c @@ -0,0 +1,99 @@ +/* + * phy-bcm-kona-control.c - Broadcom Kona USB2 Phy Driver + * + * Copyright (C) 2013 Linaro Limited + * Matt Porter + * + * This software is licensed under the terms of the GNU General Public + * License version 2, as published by the Free Software Foundation, and + * may be copied, distributed, and modified under those terms. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include +#include +#include + +#include "bcm-kona-usb.h" + +static int bcm_kona_phy_init(struct usb_phy *uphy) +{ + struct bcm_kona_usb *phy = dev_get_drvdata(uphy->dev); + + bcm_kona_ctrl_usb_phy_power(phy->ctrl_dev, 1); + + return 0; +} + +static void bcm_kona_phy_shutdown(struct usb_phy *uphy) +{ + struct bcm_kona_usb *phy = dev_get_drvdata(uphy->dev); + + bcm_kona_ctrl_usb_phy_power(phy->ctrl_dev, 0); +} + +static int bcm_kona_usb2_probe(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + struct bcm_kona_usb *phy; + + phy = devm_kzalloc(dev, sizeof(*phy), GFP_KERNEL); + if (!phy) + return -ENOMEM; + + phy->ctrl_dev = bcm_kona_get_ctrl_dev(); + if (IS_ERR(phy->ctrl_dev)) { + dev_dbg(&pdev->dev, "Failed to get control device\n"); + return -ENODEV; + } + + phy->dev = dev; + phy->phy.dev = phy->dev; + phy->phy.label = "bcm-kona-usb2"; + phy->phy.init = bcm_kona_phy_init; + phy->phy.shutdown = bcm_kona_phy_shutdown; + phy->phy.type = USB_PHY_TYPE_USB2; + + platform_set_drvdata(pdev, phy); + + usb_add_phy_dev(&phy->phy); + + return 0; +} + +static int bcm_kona_usb2_remove(struct platform_device *pdev) +{ + struct bcm_kona_usb *phy = platform_get_drvdata(pdev); + + usb_remove_phy(&phy->phy); + + return 0; +} + +static const struct of_device_id bcm_kona_usb2_dt_ids[] = { + { .compatible = "brcm,kona-usb2" }, + { /* sentinel */ } +}; + +MODULE_DEVICE_TABLE(of, bcm_kona_usb2_dt_ids); + +static struct platform_driver bcm_kona_usb2_driver = { + .probe = bcm_kona_usb2_probe, + .remove = bcm_kona_usb2_remove, + .driver = { + .name = "bcm-kona-usb2", + .owner = THIS_MODULE, + .of_match_table = bcm_kona_usb2_dt_ids, + }, +}; + +module_platform_driver(bcm_kona_usb2_driver); + +MODULE_ALIAS("platform:bcm-kona-usb2"); +MODULE_AUTHOR("Matt Porter"); +MODULE_DESCRIPTION("BCM Kona USB 2.0 PHY driver"); +MODULE_LICENSE("GPL v2"); -- 1.8.4