* [PATCH v2 0/3] usb: remove some unused code @ 2017-10-26 13:48 ` Alex Elder 0 siblings, 0 replies; 13+ messages in thread From: Alex Elder @ 2017-10-26 13:48 UTC (permalink / raw) To: gregkh, stern, balbi Cc: manjunath.goudar, bjorn.andersson, Linyu.Yuan, andy.gross, tony, linux-usb, linux-arm-msm, linux-arm-kernel, linux-kernel This series deletes some Qualcomm USB code is no longer needed by any Qualcomm hardware. This version properly deletes the sections of Kconfig files that control whether the deleted code gets built. (This time I'm also sending to linux-arm-msm and linux-arm-kernel.) -Alex Alex Elder (3): usb: host: remove ehci-msm.c usb: phy: remove phy-msm-usb.c usb: phy: remove phy-qcom-8x16-usb.c drivers/usb/host/Makefile | 1 - drivers/usb/host/ehci-msm.c | 265 ----- drivers/usb/phy/Makefile | 2 - drivers/usb/phy/phy-msm-usb.c | 2085 ----------------------------------- drivers/usb/phy/phy-qcom-8x16-usb.c | 366 ------ 5 files changed, 2719 deletions(-) delete mode 100644 drivers/usb/host/ehci-msm.c delete mode 100644 drivers/usb/phy/phy-msm-usb.c delete mode 100644 drivers/usb/phy/phy-qcom-8x16-usb.c -- 2.11.0 ^ permalink raw reply [flat|nested] 13+ messages in thread
* [PATCH v2 0/3] usb: remove some unused code @ 2017-10-26 13:48 ` Alex Elder 0 siblings, 0 replies; 13+ messages in thread From: Alex Elder @ 2017-10-26 13:48 UTC (permalink / raw) To: linux-arm-kernel This series deletes some Qualcomm USB code is no longer needed by any Qualcomm hardware. This version properly deletes the sections of Kconfig files that control whether the deleted code gets built. (This time I'm also sending to linux-arm-msm and linux-arm-kernel.) -Alex Alex Elder (3): usb: host: remove ehci-msm.c usb: phy: remove phy-msm-usb.c usb: phy: remove phy-qcom-8x16-usb.c drivers/usb/host/Makefile | 1 - drivers/usb/host/ehci-msm.c | 265 ----- drivers/usb/phy/Makefile | 2 - drivers/usb/phy/phy-msm-usb.c | 2085 ----------------------------------- drivers/usb/phy/phy-qcom-8x16-usb.c | 366 ------ 5 files changed, 2719 deletions(-) delete mode 100644 drivers/usb/host/ehci-msm.c delete mode 100644 drivers/usb/phy/phy-msm-usb.c delete mode 100644 drivers/usb/phy/phy-qcom-8x16-usb.c -- 2.11.0 ^ permalink raw reply [flat|nested] 13+ messages in thread
* [PATCH v2 1/3] usb: host: remove ehci-msm.c 2017-10-26 13:48 ` Alex Elder @ 2017-10-26 13:48 ` Alex Elder -1 siblings, 0 replies; 13+ messages in thread From: Alex Elder @ 2017-10-26 13:48 UTC (permalink / raw) To: gregkh, stern, balbi Cc: manjunath.goudar, bjorn.andersson, Linyu.Yuan, andy.gross, tony, linux-usb, linux-arm-msm, linux-arm-kernel, linux-kernel No Qualcomm SoC requires the "ehci-msm.c" code any more. So remove it. Suggested-by: Stephen Boyd <sboyd@codeaurora.org> Signed-off-by: Alex Elder <elder@linaro.org> Acked-by: Bjorn Andersson <bjorn.andersson@linaro.org> Acked-by: Andy Gross <andy.gross@linaro.org> --- v2: Update the Kconfig file so it no longer offers to build this code, as suggested by Manu Gautam. drivers/usb/host/Kconfig | 12 -- drivers/usb/host/Makefile | 1 - drivers/usb/host/ehci-msm.c | 265 -------------------------------------------- 3 files changed, 278 deletions(-) delete mode 100644 drivers/usb/host/ehci-msm.c diff --git a/drivers/usb/host/Kconfig b/drivers/usb/host/Kconfig index fa5692dec832..f03b8041a9b1 100644 --- a/drivers/usb/host/Kconfig +++ b/drivers/usb/host/Kconfig @@ -222,18 +222,6 @@ config USB_EHCI_HCD_AT91 Enables support for the on-chip EHCI controller on Atmel chips. -config USB_EHCI_MSM - tristate "Support for Qualcomm QSD/MSM on-chip EHCI USB controller" - depends on ARCH_QCOM - select USB_EHCI_ROOT_HUB_TT - ---help--- - Enables support for the USB Host controller present on the - Qualcomm chipsets. Root Hub has inbuilt TT. - This driver depends on OTG driver for PHY initialization, - clock management, powering up VBUS, and power management. - This driver is not supported on boards like trout which - has an external PHY. - config USB_EHCI_TEGRA tristate "NVIDIA Tegra HCD support" depends on ARCH_TEGRA diff --git a/drivers/usb/host/Makefile b/drivers/usb/host/Makefile index cf2691fffcc0..1645c549bdb1 100644 --- a/drivers/usb/host/Makefile +++ b/drivers/usb/host/Makefile @@ -39,7 +39,6 @@ obj-$(CONFIG_USB_EHCI_HCD_SPEAR) += ehci-spear.o obj-$(CONFIG_USB_EHCI_HCD_STI) += ehci-st.o obj-$(CONFIG_USB_EHCI_EXYNOS) += ehci-exynos.o obj-$(CONFIG_USB_EHCI_HCD_AT91) += ehci-atmel.o -obj-$(CONFIG_USB_EHCI_MSM) += ehci-msm.o obj-$(CONFIG_USB_EHCI_TEGRA) += ehci-tegra.o obj-$(CONFIG_USB_W90X900_EHCI) += ehci-w90x900.o diff --git a/drivers/usb/host/ehci-msm.c b/drivers/usb/host/ehci-msm.c deleted file mode 100644 index 2f8d3af811ce..000000000000 --- a/drivers/usb/host/ehci-msm.c +++ /dev/null @@ -1,265 +0,0 @@ -/* ehci-msm.c - HSUSB Host Controller Driver Implementation - * - * Copyright (c) 2008-2011, Code Aurora Forum. All rights reserved. - * - * Partly derived from ehci-fsl.c and ehci-hcd.c - * Copyright (c) 2000-2004 by David Brownell - * Copyright (c) 2005 MontaVista Software - * - * All source code in this file is licensed under the following license except - * where indicated. - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License version 2 as published - * by the Free Software Foundation. - * - * 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. - * You should have received a copy of the GNU General Public License - * along with this program; if not, you can find it at http://www.fsf.org - */ - -#include <linux/clk.h> -#include <linux/err.h> -#include <linux/io.h> -#include <linux/kernel.h> -#include <linux/module.h> -#include <linux/platform_device.h> -#include <linux/pm_runtime.h> -#include <linux/usb/otg.h> -#include <linux/usb/msm_hsusb_hw.h> -#include <linux/usb.h> -#include <linux/usb/hcd.h> -#include <linux/acpi.h> - -#include "ehci.h" - -#define MSM_USB_BASE (hcd->regs) - -#define DRIVER_DESC "Qualcomm On-Chip EHCI Host Controller" - -static const char hcd_name[] = "ehci-msm"; -static struct hc_driver __read_mostly msm_hc_driver; - -static int ehci_msm_reset(struct usb_hcd *hcd) -{ - struct ehci_hcd *ehci = hcd_to_ehci(hcd); - int retval; - - ehci->caps = USB_CAPLENGTH; - hcd->has_tt = 1; - - retval = ehci_setup(hcd); - if (retval) - return retval; - - /* select ULPI phy and clear other status/control bits in PORTSC */ - writel(PORTSC_PTS_ULPI, USB_PORTSC); - /* bursts of unspecified length. */ - writel(0, USB_AHBBURST); - /* Use the AHB transactor, allow posted data writes */ - writel(0x8, USB_AHBMODE); - /* Disable streaming mode and select host mode */ - writel(0x13, USB_USBMODE); - /* Disable ULPI_TX_PKT_EN_CLR_FIX which is valid only for HSIC */ - writel(readl(USB_GENCONFIG_2) & ~ULPI_TX_PKT_EN_CLR_FIX, USB_GENCONFIG_2); - - return 0; -} - -static int ehci_msm_probe(struct platform_device *pdev) -{ - struct usb_hcd *hcd; - struct resource *res; - struct usb_phy *phy; - int ret; - - dev_dbg(&pdev->dev, "ehci_msm proble\n"); - - hcd = usb_create_hcd(&msm_hc_driver, &pdev->dev, dev_name(&pdev->dev)); - if (!hcd) { - dev_err(&pdev->dev, "Unable to create HCD\n"); - return -ENOMEM; - } - - ret = platform_get_irq(pdev, 0); - if (ret < 0) { - dev_err(&pdev->dev, "Unable to get IRQ resource\n"); - goto put_hcd; - } - hcd->irq = ret; - - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - if (!res) { - dev_err(&pdev->dev, "Unable to get memory resource\n"); - ret = -ENODEV; - goto put_hcd; - } - - hcd->rsrc_start = res->start; - hcd->rsrc_len = resource_size(res); - hcd->regs = devm_ioremap(&pdev->dev, hcd->rsrc_start, hcd->rsrc_len); - if (!hcd->regs) { - dev_err(&pdev->dev, "ioremap failed\n"); - ret = -ENOMEM; - goto put_hcd; - } - - /* - * If there is an OTG driver, let it take care of PHY initialization, - * clock management, powering up VBUS, mapping of registers address - * space and power management. - */ - if (pdev->dev.of_node) - phy = devm_usb_get_phy_by_phandle(&pdev->dev, "usb-phy", 0); - else - phy = devm_usb_get_phy(&pdev->dev, USB_PHY_TYPE_USB2); - - if (IS_ERR(phy)) { - if (PTR_ERR(phy) == -EPROBE_DEFER) { - dev_err(&pdev->dev, "unable to find transceiver\n"); - ret = -EPROBE_DEFER; - goto put_hcd; - } - phy = NULL; - } - - hcd->usb_phy = phy; - device_init_wakeup(&pdev->dev, 1); - - if (phy && phy->otg) { - /* - * MSM OTG driver takes care of adding the HCD and - * placing hardware into low power mode via runtime PM. - */ - ret = otg_set_host(phy->otg, &hcd->self); - if (ret < 0) { - dev_err(&pdev->dev, "unable to register with transceiver\n"); - goto put_hcd; - } - - pm_runtime_no_callbacks(&pdev->dev); - pm_runtime_enable(&pdev->dev); - } else { - ret = usb_add_hcd(hcd, hcd->irq, IRQF_SHARED); - if (ret) - goto put_hcd; - } - - return 0; - -put_hcd: - usb_put_hcd(hcd); - - return ret; -} - -static int ehci_msm_remove(struct platform_device *pdev) -{ - struct usb_hcd *hcd = platform_get_drvdata(pdev); - - device_init_wakeup(&pdev->dev, 0); - pm_runtime_disable(&pdev->dev); - pm_runtime_set_suspended(&pdev->dev); - - if (hcd->usb_phy && hcd->usb_phy->otg) - otg_set_host(hcd->usb_phy->otg, NULL); - else - usb_remove_hcd(hcd); - - usb_put_hcd(hcd); - - return 0; -} - -#ifdef CONFIG_PM -static int ehci_msm_pm_suspend(struct device *dev) -{ - struct usb_hcd *hcd = dev_get_drvdata(dev); - struct ehci_hcd *ehci = hcd_to_ehci(hcd); - bool do_wakeup = device_may_wakeup(dev); - - dev_dbg(dev, "ehci-msm PM suspend\n"); - - /* Only call ehci_suspend if ehci_setup has been done */ - if (ehci->sbrn) - return ehci_suspend(hcd, do_wakeup); - - return 0; -} - -static int ehci_msm_pm_resume(struct device *dev) -{ - struct usb_hcd *hcd = dev_get_drvdata(dev); - struct ehci_hcd *ehci = hcd_to_ehci(hcd); - - dev_dbg(dev, "ehci-msm PM resume\n"); - - /* Only call ehci_resume if ehci_setup has been done */ - if (ehci->sbrn) - ehci_resume(hcd, false); - - return 0; -} - -#else -#define ehci_msm_pm_suspend NULL -#define ehci_msm_pm_resume NULL -#endif - -static const struct dev_pm_ops ehci_msm_dev_pm_ops = { - .suspend = ehci_msm_pm_suspend, - .resume = ehci_msm_pm_resume, -}; - -static const struct acpi_device_id msm_ehci_acpi_ids[] = { - { "QCOM8040", 0 }, - { } -}; -MODULE_DEVICE_TABLE(acpi, msm_ehci_acpi_ids); - -static const struct of_device_id msm_ehci_dt_match[] = { - { .compatible = "qcom,ehci-host", }, - {} -}; -MODULE_DEVICE_TABLE(of, msm_ehci_dt_match); - -static struct platform_driver ehci_msm_driver = { - .probe = ehci_msm_probe, - .remove = ehci_msm_remove, - .shutdown = usb_hcd_platform_shutdown, - .driver = { - .name = "msm_hsusb_host", - .pm = &ehci_msm_dev_pm_ops, - .of_match_table = msm_ehci_dt_match, - .acpi_match_table = ACPI_PTR(msm_ehci_acpi_ids), - }, -}; - -static const struct ehci_driver_overrides msm_overrides __initconst = { - .reset = ehci_msm_reset, -}; - -static int __init ehci_msm_init(void) -{ - if (usb_disabled()) - return -ENODEV; - - pr_info("%s: " DRIVER_DESC "\n", hcd_name); - ehci_init_driver(&msm_hc_driver, &msm_overrides); - return platform_driver_register(&ehci_msm_driver); -} -module_init(ehci_msm_init); - -static void __exit ehci_msm_cleanup(void) -{ - platform_driver_unregister(&ehci_msm_driver); -} -module_exit(ehci_msm_cleanup); - -MODULE_DESCRIPTION(DRIVER_DESC); -MODULE_ALIAS("platform:msm-ehci"); -MODULE_LICENSE("GPL"); -- 2.11.0 ^ permalink raw reply related [flat|nested] 13+ messages in thread
* [PATCH v2 1/3] usb: host: remove ehci-msm.c @ 2017-10-26 13:48 ` Alex Elder 0 siblings, 0 replies; 13+ messages in thread From: Alex Elder @ 2017-10-26 13:48 UTC (permalink / raw) To: linux-arm-kernel No Qualcomm SoC requires the "ehci-msm.c" code any more. So remove it. Suggested-by: Stephen Boyd <sboyd@codeaurora.org> Signed-off-by: Alex Elder <elder@linaro.org> Acked-by: Bjorn Andersson <bjorn.andersson@linaro.org> Acked-by: Andy Gross <andy.gross@linaro.org> --- v2: Update the Kconfig file so it no longer offers to build this code, as suggested by Manu Gautam. drivers/usb/host/Kconfig | 12 -- drivers/usb/host/Makefile | 1 - drivers/usb/host/ehci-msm.c | 265 -------------------------------------------- 3 files changed, 278 deletions(-) delete mode 100644 drivers/usb/host/ehci-msm.c diff --git a/drivers/usb/host/Kconfig b/drivers/usb/host/Kconfig index fa5692dec832..f03b8041a9b1 100644 --- a/drivers/usb/host/Kconfig +++ b/drivers/usb/host/Kconfig @@ -222,18 +222,6 @@ config USB_EHCI_HCD_AT91 Enables support for the on-chip EHCI controller on Atmel chips. -config USB_EHCI_MSM - tristate "Support for Qualcomm QSD/MSM on-chip EHCI USB controller" - depends on ARCH_QCOM - select USB_EHCI_ROOT_HUB_TT - ---help--- - Enables support for the USB Host controller present on the - Qualcomm chipsets. Root Hub has inbuilt TT. - This driver depends on OTG driver for PHY initialization, - clock management, powering up VBUS, and power management. - This driver is not supported on boards like trout which - has an external PHY. - config USB_EHCI_TEGRA tristate "NVIDIA Tegra HCD support" depends on ARCH_TEGRA diff --git a/drivers/usb/host/Makefile b/drivers/usb/host/Makefile index cf2691fffcc0..1645c549bdb1 100644 --- a/drivers/usb/host/Makefile +++ b/drivers/usb/host/Makefile @@ -39,7 +39,6 @@ obj-$(CONFIG_USB_EHCI_HCD_SPEAR) += ehci-spear.o obj-$(CONFIG_USB_EHCI_HCD_STI) += ehci-st.o obj-$(CONFIG_USB_EHCI_EXYNOS) += ehci-exynos.o obj-$(CONFIG_USB_EHCI_HCD_AT91) += ehci-atmel.o -obj-$(CONFIG_USB_EHCI_MSM) += ehci-msm.o obj-$(CONFIG_USB_EHCI_TEGRA) += ehci-tegra.o obj-$(CONFIG_USB_W90X900_EHCI) += ehci-w90x900.o diff --git a/drivers/usb/host/ehci-msm.c b/drivers/usb/host/ehci-msm.c deleted file mode 100644 index 2f8d3af811ce..000000000000 --- a/drivers/usb/host/ehci-msm.c +++ /dev/null @@ -1,265 +0,0 @@ -/* ehci-msm.c - HSUSB Host Controller Driver Implementation - * - * Copyright (c) 2008-2011, Code Aurora Forum. All rights reserved. - * - * Partly derived from ehci-fsl.c and ehci-hcd.c - * Copyright (c) 2000-2004 by David Brownell - * Copyright (c) 2005 MontaVista Software - * - * All source code in this file is licensed under the following license except - * where indicated. - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License version 2 as published - * by the Free Software Foundation. - * - * 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. - * You should have received a copy of the GNU General Public License - * along with this program; if not, you can find it at http://www.fsf.org - */ - -#include <linux/clk.h> -#include <linux/err.h> -#include <linux/io.h> -#include <linux/kernel.h> -#include <linux/module.h> -#include <linux/platform_device.h> -#include <linux/pm_runtime.h> -#include <linux/usb/otg.h> -#include <linux/usb/msm_hsusb_hw.h> -#include <linux/usb.h> -#include <linux/usb/hcd.h> -#include <linux/acpi.h> - -#include "ehci.h" - -#define MSM_USB_BASE (hcd->regs) - -#define DRIVER_DESC "Qualcomm On-Chip EHCI Host Controller" - -static const char hcd_name[] = "ehci-msm"; -static struct hc_driver __read_mostly msm_hc_driver; - -static int ehci_msm_reset(struct usb_hcd *hcd) -{ - struct ehci_hcd *ehci = hcd_to_ehci(hcd); - int retval; - - ehci->caps = USB_CAPLENGTH; - hcd->has_tt = 1; - - retval = ehci_setup(hcd); - if (retval) - return retval; - - /* select ULPI phy and clear other status/control bits in PORTSC */ - writel(PORTSC_PTS_ULPI, USB_PORTSC); - /* bursts of unspecified length. */ - writel(0, USB_AHBBURST); - /* Use the AHB transactor, allow posted data writes */ - writel(0x8, USB_AHBMODE); - /* Disable streaming mode and select host mode */ - writel(0x13, USB_USBMODE); - /* Disable ULPI_TX_PKT_EN_CLR_FIX which is valid only for HSIC */ - writel(readl(USB_GENCONFIG_2) & ~ULPI_TX_PKT_EN_CLR_FIX, USB_GENCONFIG_2); - - return 0; -} - -static int ehci_msm_probe(struct platform_device *pdev) -{ - struct usb_hcd *hcd; - struct resource *res; - struct usb_phy *phy; - int ret; - - dev_dbg(&pdev->dev, "ehci_msm proble\n"); - - hcd = usb_create_hcd(&msm_hc_driver, &pdev->dev, dev_name(&pdev->dev)); - if (!hcd) { - dev_err(&pdev->dev, "Unable to create HCD\n"); - return -ENOMEM; - } - - ret = platform_get_irq(pdev, 0); - if (ret < 0) { - dev_err(&pdev->dev, "Unable to get IRQ resource\n"); - goto put_hcd; - } - hcd->irq = ret; - - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - if (!res) { - dev_err(&pdev->dev, "Unable to get memory resource\n"); - ret = -ENODEV; - goto put_hcd; - } - - hcd->rsrc_start = res->start; - hcd->rsrc_len = resource_size(res); - hcd->regs = devm_ioremap(&pdev->dev, hcd->rsrc_start, hcd->rsrc_len); - if (!hcd->regs) { - dev_err(&pdev->dev, "ioremap failed\n"); - ret = -ENOMEM; - goto put_hcd; - } - - /* - * If there is an OTG driver, let it take care of PHY initialization, - * clock management, powering up VBUS, mapping of registers address - * space and power management. - */ - if (pdev->dev.of_node) - phy = devm_usb_get_phy_by_phandle(&pdev->dev, "usb-phy", 0); - else - phy = devm_usb_get_phy(&pdev->dev, USB_PHY_TYPE_USB2); - - if (IS_ERR(phy)) { - if (PTR_ERR(phy) == -EPROBE_DEFER) { - dev_err(&pdev->dev, "unable to find transceiver\n"); - ret = -EPROBE_DEFER; - goto put_hcd; - } - phy = NULL; - } - - hcd->usb_phy = phy; - device_init_wakeup(&pdev->dev, 1); - - if (phy && phy->otg) { - /* - * MSM OTG driver takes care of adding the HCD and - * placing hardware into low power mode via runtime PM. - */ - ret = otg_set_host(phy->otg, &hcd->self); - if (ret < 0) { - dev_err(&pdev->dev, "unable to register with transceiver\n"); - goto put_hcd; - } - - pm_runtime_no_callbacks(&pdev->dev); - pm_runtime_enable(&pdev->dev); - } else { - ret = usb_add_hcd(hcd, hcd->irq, IRQF_SHARED); - if (ret) - goto put_hcd; - } - - return 0; - -put_hcd: - usb_put_hcd(hcd); - - return ret; -} - -static int ehci_msm_remove(struct platform_device *pdev) -{ - struct usb_hcd *hcd = platform_get_drvdata(pdev); - - device_init_wakeup(&pdev->dev, 0); - pm_runtime_disable(&pdev->dev); - pm_runtime_set_suspended(&pdev->dev); - - if (hcd->usb_phy && hcd->usb_phy->otg) - otg_set_host(hcd->usb_phy->otg, NULL); - else - usb_remove_hcd(hcd); - - usb_put_hcd(hcd); - - return 0; -} - -#ifdef CONFIG_PM -static int ehci_msm_pm_suspend(struct device *dev) -{ - struct usb_hcd *hcd = dev_get_drvdata(dev); - struct ehci_hcd *ehci = hcd_to_ehci(hcd); - bool do_wakeup = device_may_wakeup(dev); - - dev_dbg(dev, "ehci-msm PM suspend\n"); - - /* Only call ehci_suspend if ehci_setup has been done */ - if (ehci->sbrn) - return ehci_suspend(hcd, do_wakeup); - - return 0; -} - -static int ehci_msm_pm_resume(struct device *dev) -{ - struct usb_hcd *hcd = dev_get_drvdata(dev); - struct ehci_hcd *ehci = hcd_to_ehci(hcd); - - dev_dbg(dev, "ehci-msm PM resume\n"); - - /* Only call ehci_resume if ehci_setup has been done */ - if (ehci->sbrn) - ehci_resume(hcd, false); - - return 0; -} - -#else -#define ehci_msm_pm_suspend NULL -#define ehci_msm_pm_resume NULL -#endif - -static const struct dev_pm_ops ehci_msm_dev_pm_ops = { - .suspend = ehci_msm_pm_suspend, - .resume = ehci_msm_pm_resume, -}; - -static const struct acpi_device_id msm_ehci_acpi_ids[] = { - { "QCOM8040", 0 }, - { } -}; -MODULE_DEVICE_TABLE(acpi, msm_ehci_acpi_ids); - -static const struct of_device_id msm_ehci_dt_match[] = { - { .compatible = "qcom,ehci-host", }, - {} -}; -MODULE_DEVICE_TABLE(of, msm_ehci_dt_match); - -static struct platform_driver ehci_msm_driver = { - .probe = ehci_msm_probe, - .remove = ehci_msm_remove, - .shutdown = usb_hcd_platform_shutdown, - .driver = { - .name = "msm_hsusb_host", - .pm = &ehci_msm_dev_pm_ops, - .of_match_table = msm_ehci_dt_match, - .acpi_match_table = ACPI_PTR(msm_ehci_acpi_ids), - }, -}; - -static const struct ehci_driver_overrides msm_overrides __initconst = { - .reset = ehci_msm_reset, -}; - -static int __init ehci_msm_init(void) -{ - if (usb_disabled()) - return -ENODEV; - - pr_info("%s: " DRIVER_DESC "\n", hcd_name); - ehci_init_driver(&msm_hc_driver, &msm_overrides); - return platform_driver_register(&ehci_msm_driver); -} -module_init(ehci_msm_init); - -static void __exit ehci_msm_cleanup(void) -{ - platform_driver_unregister(&ehci_msm_driver); -} -module_exit(ehci_msm_cleanup); - -MODULE_DESCRIPTION(DRIVER_DESC); -MODULE_ALIAS("platform:msm-ehci"); -MODULE_LICENSE("GPL"); -- 2.11.0 ^ permalink raw reply related [flat|nested] 13+ messages in thread
* Re: [PATCH v2 1/3] usb: host: remove ehci-msm.c 2017-10-26 13:48 ` Alex Elder (?) @ 2017-10-26 15:06 ` Alan Stern -1 siblings, 0 replies; 13+ messages in thread From: Alan Stern @ 2017-10-26 15:06 UTC (permalink / raw) To: Alex Elder Cc: gregkh, balbi, manjunath.goudar, bjorn.andersson, Linyu.Yuan, andy.gross, tony, linux-usb, linux-arm-msm, linux-arm-kernel, linux-kernel On Thu, 26 Oct 2017, Alex Elder wrote: > No Qualcomm SoC requires the "ehci-msm.c" code any more. So remove it. What about old Qualcomm SoCs? What should they use instead? Alan Stern ^ permalink raw reply [flat|nested] 13+ messages in thread
* [PATCH v2 1/3] usb: host: remove ehci-msm.c @ 2017-10-26 15:06 ` Alan Stern 0 siblings, 0 replies; 13+ messages in thread From: Alan Stern @ 2017-10-26 15:06 UTC (permalink / raw) To: linux-arm-kernel On Thu, 26 Oct 2017, Alex Elder wrote: > No Qualcomm SoC requires the "ehci-msm.c" code any more. So remove it. What about old Qualcomm SoCs? What should they use instead? Alan Stern ^ permalink raw reply [flat|nested] 13+ messages in thread
* Re: [PATCH v2 1/3] usb: host: remove ehci-msm.c @ 2017-10-26 15:06 ` Alan Stern 0 siblings, 0 replies; 13+ messages in thread From: Alan Stern @ 2017-10-26 15:06 UTC (permalink / raw) To: Alex Elder Cc: gregkh, balbi, manjunath.goudar, bjorn.andersson, Linyu.Yuan, andy.gross, tony, linux-usb, linux-arm-msm, linux-arm-kernel, linux-kernel On Thu, 26 Oct 2017, Alex Elder wrote: > No Qualcomm SoC requires the "ehci-msm.c" code any more. So remove it. What about old Qualcomm SoCs? What should they use instead? Alan Stern ^ permalink raw reply [flat|nested] 13+ messages in thread
* Re: [PATCH v2 1/3] usb: host: remove ehci-msm.c 2017-10-26 15:06 ` Alan Stern @ 2017-10-30 21:06 ` Bjorn Andersson -1 siblings, 0 replies; 13+ messages in thread From: Bjorn Andersson @ 2017-10-30 21:06 UTC (permalink / raw) To: Alan Stern Cc: Alex Elder, gregkh, balbi, manjunath.goudar, Linyu.Yuan, andy.gross, tony, linux-usb, linux-arm-msm, linux-arm-kernel, linux-kernel On Thu 26 Oct 08:06 PDT 2017, Alan Stern wrote: > On Thu, 26 Oct 2017, Alex Elder wrote: > > > No Qualcomm SoC requires the "ehci-msm.c" code any more. So remove it. > > What about old Qualcomm SoCs? What should they use instead? > These drivers where unfortunately broken by design (host and gadget mode where implemented in separate drivers that where racing) and the ChipIdea driver has been updated to support driving the host-mode on these platforms as well. So all platforms existing upstream should be covered by the remaining drivers. Regards, Bjorn ^ permalink raw reply [flat|nested] 13+ messages in thread
* [PATCH v2 1/3] usb: host: remove ehci-msm.c @ 2017-10-30 21:06 ` Bjorn Andersson 0 siblings, 0 replies; 13+ messages in thread From: Bjorn Andersson @ 2017-10-30 21:06 UTC (permalink / raw) To: linux-arm-kernel On Thu 26 Oct 08:06 PDT 2017, Alan Stern wrote: > On Thu, 26 Oct 2017, Alex Elder wrote: > > > No Qualcomm SoC requires the "ehci-msm.c" code any more. So remove it. > > What about old Qualcomm SoCs? What should they use instead? > These drivers where unfortunately broken by design (host and gadget mode where implemented in separate drivers that where racing) and the ChipIdea driver has been updated to support driving the host-mode on these platforms as well. So all platforms existing upstream should be covered by the remaining drivers. Regards, Bjorn ^ permalink raw reply [flat|nested] 13+ messages in thread
* [PATCH v2 2/3] usb: phy: remove phy-msm-usb.c 2017-10-26 13:48 ` Alex Elder @ 2017-10-26 13:48 ` Alex Elder -1 siblings, 0 replies; 13+ messages in thread From: Alex Elder @ 2017-10-26 13:48 UTC (permalink / raw) To: gregkh, stern, balbi Cc: manjunath.goudar, bjorn.andersson, Linyu.Yuan, andy.gross, tony, linux-usb, linux-arm-msm, linux-arm-kernel, linux-kernel No Qualcomm SoC requires the "phy-msm-usb.c" USB phy driver support any more, so remove the code. Suggested-by: Stephen Boyd <sboyd@codeaurora.org> Signed-off-by: Alex Elder <elder@linaro.org> Acked-by: Bjorn Andersson <bjorn.andersson@linaro.org> Acked-by: Andy Gross <andy.gross@linaro.org> --- v2: Update the Kconfig file so it no longer offers to build this code, as suggested by Manu Gautam. drivers/usb/phy/Kconfig | 15 - drivers/usb/phy/Makefile | 1 - drivers/usb/phy/phy-msm-usb.c | 2085 ----------------------------------------- 3 files changed, 2101 deletions(-) delete mode 100644 drivers/usb/phy/phy-msm-usb.c diff --git a/drivers/usb/phy/Kconfig b/drivers/usb/phy/Kconfig index aff702c0eb9f..f5775e5c9f52 100644 --- a/drivers/usb/phy/Kconfig +++ b/drivers/usb/phy/Kconfig @@ -137,21 +137,6 @@ config USB_ISP1301 To compile this driver as a module, choose M here: the module will be called phy-isp1301. -config USB_MSM_OTG - tristate "Qualcomm on-chip USB OTG controller support" - depends on (USB || USB_GADGET) && (ARCH_QCOM || COMPILE_TEST) - depends on USB_GADGET || !USB_GADGET # if USB_GADGET=m, this can't be 'y' - depends on RESET_CONTROLLER - select USB_PHY - help - Enable this to support the USB OTG transceiver on Qualcomm chips. It - handles PHY initialization, clock management, and workarounds - required after resetting the hardware and power management. - This driver is required even for peripheral only or host only - mode configurations. - This driver is not supported on boards like trout which - has an external PHY. - config USB_QCOM_8X16_PHY tristate "Qualcomm APQ8016/MSM8916 on-chip USB PHY controller support" depends on ARCH_QCOM || COMPILE_TEST diff --git a/drivers/usb/phy/Makefile b/drivers/usb/phy/Makefile index e7c9ca8cafb0..61013f38abbe 100644 --- a/drivers/usb/phy/Makefile +++ b/drivers/usb/phy/Makefile @@ -18,7 +18,6 @@ obj-$(CONFIG_TWL6030_USB) += phy-twl6030-usb.o obj-$(CONFIG_USB_EHCI_TEGRA) += phy-tegra-usb.o obj-$(CONFIG_USB_GPIO_VBUS) += phy-gpio-vbus-usb.o obj-$(CONFIG_USB_ISP1301) += phy-isp1301.o -obj-$(CONFIG_USB_MSM_OTG) += phy-msm-usb.o obj-$(CONFIG_USB_QCOM_8X16_PHY) += phy-qcom-8x16-usb.o obj-$(CONFIG_USB_MV_OTG) += phy-mv-usb.o obj-$(CONFIG_USB_MXS_PHY) += phy-mxs-usb.o diff --git a/drivers/usb/phy/phy-msm-usb.c b/drivers/usb/phy/phy-msm-usb.c deleted file mode 100644 index 3d0dd2f97415..000000000000 --- a/drivers/usb/phy/phy-msm-usb.c +++ /dev/null @@ -1,2085 +0,0 @@ -/* Copyright (c) 2009-2011, Code Aurora Forum. All rights reserved. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 and - * only version 2 as published by the Free Software Foundation. - * - * 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. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA - * 02110-1301, USA. - * - */ - -#include <linux/module.h> -#include <linux/device.h> -#include <linux/extcon.h> -#include <linux/gpio/consumer.h> -#include <linux/platform_device.h> -#include <linux/clk.h> -#include <linux/slab.h> -#include <linux/interrupt.h> -#include <linux/err.h> -#include <linux/delay.h> -#include <linux/io.h> -#include <linux/ioport.h> -#include <linux/uaccess.h> -#include <linux/debugfs.h> -#include <linux/seq_file.h> -#include <linux/pm_runtime.h> -#include <linux/of.h> -#include <linux/of_device.h> -#include <linux/reboot.h> -#include <linux/reset.h> -#include <linux/types.h> -#include <linux/usb/otg.h> - -#include <linux/usb.h> -#include <linux/usb/otg.h> -#include <linux/usb/of.h> -#include <linux/usb/ulpi.h> -#include <linux/usb/gadget.h> -#include <linux/usb/hcd.h> -#include <linux/usb/msm_hsusb_hw.h> -#include <linux/regulator/consumer.h> - -/** - * OTG control - * - * OTG_NO_CONTROL Id/VBUS notifications not required. Useful in host - * only configuration. - * OTG_PHY_CONTROL Id/VBUS notifications comes form USB PHY. - * OTG_PMIC_CONTROL Id/VBUS notifications comes from PMIC hardware. - * OTG_USER_CONTROL Id/VBUS notifcations comes from User via sysfs. - * - */ -enum otg_control_type { - OTG_NO_CONTROL = 0, - OTG_PHY_CONTROL, - OTG_PMIC_CONTROL, - OTG_USER_CONTROL, -}; - -/** - * PHY used in - * - * INVALID_PHY Unsupported PHY - * CI_45NM_INTEGRATED_PHY Chipidea 45nm integrated PHY - * SNPS_28NM_INTEGRATED_PHY Synopsis 28nm integrated PHY - * - */ -enum msm_usb_phy_type { - INVALID_PHY = 0, - CI_45NM_INTEGRATED_PHY, - SNPS_28NM_INTEGRATED_PHY, -}; - -#define IDEV_CHG_MAX 1500 -#define IUNIT 100 - -/** - * Different states involved in USB charger detection. - * - * USB_CHG_STATE_UNDEFINED USB charger is not connected or detection - * process is not yet started. - * USB_CHG_STATE_WAIT_FOR_DCD Waiting for Data pins contact. - * USB_CHG_STATE_DCD_DONE Data pin contact is detected. - * USB_CHG_STATE_PRIMARY_DONE Primary detection is completed (Detects - * between SDP and DCP/CDP). - * USB_CHG_STATE_SECONDARY_DONE Secondary detection is completed (Detects - * between DCP and CDP). - * USB_CHG_STATE_DETECTED USB charger type is determined. - * - */ -enum usb_chg_state { - USB_CHG_STATE_UNDEFINED = 0, - USB_CHG_STATE_WAIT_FOR_DCD, - USB_CHG_STATE_DCD_DONE, - USB_CHG_STATE_PRIMARY_DONE, - USB_CHG_STATE_SECONDARY_DONE, - USB_CHG_STATE_DETECTED, -}; - -/** - * USB charger types - * - * USB_INVALID_CHARGER Invalid USB charger. - * USB_SDP_CHARGER Standard downstream port. Refers to a downstream port - * on USB2.0 compliant host/hub. - * USB_DCP_CHARGER Dedicated charger port (AC charger/ Wall charger). - * USB_CDP_CHARGER Charging downstream port. Enumeration can happen and - * IDEV_CHG_MAX can be drawn irrespective of USB state. - * - */ -enum usb_chg_type { - USB_INVALID_CHARGER = 0, - USB_SDP_CHARGER, - USB_DCP_CHARGER, - USB_CDP_CHARGER, -}; - -/** - * struct msm_otg_platform_data - platform device data - * for msm_otg driver. - * @phy_init_seq: PHY configuration sequence values. Value of -1 is reserved as - * "do not overwrite default vaule at this address". - * @phy_init_sz: PHY configuration sequence size. - * @vbus_power: VBUS power on/off routine. - * @power_budget: VBUS power budget in mA (0 will be treated as 500mA). - * @mode: Supported mode (OTG/peripheral/host). - * @otg_control: OTG switch controlled by user/Id pin - */ -struct msm_otg_platform_data { - int *phy_init_seq; - int phy_init_sz; - void (*vbus_power)(bool on); - unsigned power_budget; - enum usb_dr_mode mode; - enum otg_control_type otg_control; - enum msm_usb_phy_type phy_type; - void (*setup_gpio)(enum usb_otg_state state); -}; - -/** - * struct msm_otg: OTG driver data. Shared by HCD and DCD. - * @otg: USB OTG Transceiver structure. - * @pdata: otg device platform data. - * @irq: IRQ number assigned for HSUSB controller. - * @clk: clock struct of usb_hs_clk. - * @pclk: clock struct of usb_hs_pclk. - * @core_clk: clock struct of usb_hs_core_clk. - * @regs: ioremapped register base address. - * @inputs: OTG state machine inputs(Id, SessValid etc). - * @sm_work: OTG state machine work. - * @in_lpm: indicates low power mode (LPM) state. - * @async_int: Async interrupt arrived. - * @cur_power: The amount of mA available from downstream port. - * @chg_work: Charger detection work. - * @chg_state: The state of charger detection process. - * @chg_type: The type of charger attached. - * @dcd_retires: The retry count used to track Data contact - * detection process. - * @manual_pullup: true if VBUS is not routed to USB controller/phy - * and controller driver therefore enables pull-up explicitly before - * starting controller using usbcmd run/stop bit. - * @vbus: VBUS signal state trakining, using extcon framework - * @id: ID signal state trakining, using extcon framework - * @switch_gpio: Descriptor for GPIO used to control external Dual - * SPDT USB Switch. - * @reboot: Used to inform the driver to route USB D+/D- line to Device - * connector - */ -struct msm_otg { - struct usb_phy phy; - struct msm_otg_platform_data *pdata; - int irq; - struct clk *clk; - struct clk *pclk; - struct clk *core_clk; - void __iomem *regs; -#define ID 0 -#define B_SESS_VLD 1 - unsigned long inputs; - struct work_struct sm_work; - atomic_t in_lpm; - int async_int; - unsigned cur_power; - int phy_number; - struct delayed_work chg_work; - enum usb_chg_state chg_state; - enum usb_chg_type chg_type; - u8 dcd_retries; - struct regulator *v3p3; - struct regulator *v1p8; - struct regulator *vddcx; - struct regulator_bulk_data supplies[3]; - - struct reset_control *phy_rst; - struct reset_control *link_rst; - int vdd_levels[3]; - - bool manual_pullup; - - struct gpio_desc *switch_gpio; - struct notifier_block reboot; -}; - -#define MSM_USB_BASE (motg->regs) -#define DRIVER_NAME "msm_otg" - -#define ULPI_IO_TIMEOUT_USEC (10 * 1000) -#define LINK_RESET_TIMEOUT_USEC (250 * 1000) - -#define USB_PHY_3P3_VOL_MIN 3050000 /* uV */ -#define USB_PHY_3P3_VOL_MAX 3300000 /* uV */ -#define USB_PHY_3P3_HPM_LOAD 50000 /* uA */ -#define USB_PHY_3P3_LPM_LOAD 4000 /* uA */ - -#define USB_PHY_1P8_VOL_MIN 1800000 /* uV */ -#define USB_PHY_1P8_VOL_MAX 1800000 /* uV */ -#define USB_PHY_1P8_HPM_LOAD 50000 /* uA */ -#define USB_PHY_1P8_LPM_LOAD 4000 /* uA */ - -#define USB_PHY_VDD_DIG_VOL_MIN 1000000 /* uV */ -#define USB_PHY_VDD_DIG_VOL_MAX 1320000 /* uV */ -#define USB_PHY_SUSP_DIG_VOL 500000 /* uV */ - -enum vdd_levels { - VDD_LEVEL_NONE = 0, - VDD_LEVEL_MIN, - VDD_LEVEL_MAX, -}; - -static int msm_hsusb_init_vddcx(struct msm_otg *motg, int init) -{ - int ret = 0; - - if (init) { - ret = regulator_set_voltage(motg->vddcx, - motg->vdd_levels[VDD_LEVEL_MIN], - motg->vdd_levels[VDD_LEVEL_MAX]); - if (ret) { - dev_err(motg->phy.dev, "Cannot set vddcx voltage\n"); - return ret; - } - - ret = regulator_enable(motg->vddcx); - if (ret) - dev_err(motg->phy.dev, "unable to enable hsusb vddcx\n"); - } else { - ret = regulator_set_voltage(motg->vddcx, 0, - motg->vdd_levels[VDD_LEVEL_MAX]); - if (ret) - dev_err(motg->phy.dev, "Cannot set vddcx voltage\n"); - ret = regulator_disable(motg->vddcx); - if (ret) - dev_err(motg->phy.dev, "unable to disable hsusb vddcx\n"); - } - - return ret; -} - -static int msm_hsusb_ldo_init(struct msm_otg *motg, int init) -{ - int rc = 0; - - if (init) { - rc = regulator_set_voltage(motg->v3p3, USB_PHY_3P3_VOL_MIN, - USB_PHY_3P3_VOL_MAX); - if (rc) { - dev_err(motg->phy.dev, "Cannot set v3p3 voltage\n"); - goto exit; - } - rc = regulator_enable(motg->v3p3); - if (rc) { - dev_err(motg->phy.dev, "unable to enable the hsusb 3p3\n"); - goto exit; - } - rc = regulator_set_voltage(motg->v1p8, USB_PHY_1P8_VOL_MIN, - USB_PHY_1P8_VOL_MAX); - if (rc) { - dev_err(motg->phy.dev, "Cannot set v1p8 voltage\n"); - goto disable_3p3; - } - rc = regulator_enable(motg->v1p8); - if (rc) { - dev_err(motg->phy.dev, "unable to enable the hsusb 1p8\n"); - goto disable_3p3; - } - - return 0; - } - - regulator_disable(motg->v1p8); -disable_3p3: - regulator_disable(motg->v3p3); -exit: - return rc; -} - -static int msm_hsusb_ldo_set_mode(struct msm_otg *motg, int on) -{ - int ret = 0; - - if (on) { - ret = regulator_set_load(motg->v1p8, USB_PHY_1P8_HPM_LOAD); - if (ret < 0) { - pr_err("Could not set HPM for v1p8\n"); - return ret; - } - ret = regulator_set_load(motg->v3p3, USB_PHY_3P3_HPM_LOAD); - if (ret < 0) { - pr_err("Could not set HPM for v3p3\n"); - regulator_set_load(motg->v1p8, USB_PHY_1P8_LPM_LOAD); - return ret; - } - } else { - ret = regulator_set_load(motg->v1p8, USB_PHY_1P8_LPM_LOAD); - if (ret < 0) - pr_err("Could not set LPM for v1p8\n"); - ret = regulator_set_load(motg->v3p3, USB_PHY_3P3_LPM_LOAD); - if (ret < 0) - pr_err("Could not set LPM for v3p3\n"); - } - - pr_debug("reg (%s)\n", on ? "HPM" : "LPM"); - return ret < 0 ? ret : 0; -} - -static int ulpi_read(struct usb_phy *phy, u32 reg) -{ - struct msm_otg *motg = container_of(phy, struct msm_otg, phy); - int cnt = 0; - - /* initiate read operation */ - writel(ULPI_RUN | ULPI_READ | ULPI_ADDR(reg), - USB_ULPI_VIEWPORT); - - /* wait for completion */ - while (cnt < ULPI_IO_TIMEOUT_USEC) { - if (!(readl(USB_ULPI_VIEWPORT) & ULPI_RUN)) - break; - udelay(1); - cnt++; - } - - if (cnt >= ULPI_IO_TIMEOUT_USEC) { - dev_err(phy->dev, "ulpi_read: timeout %08x\n", - readl(USB_ULPI_VIEWPORT)); - return -ETIMEDOUT; - } - return ULPI_DATA_READ(readl(USB_ULPI_VIEWPORT)); -} - -static int ulpi_write(struct usb_phy *phy, u32 val, u32 reg) -{ - struct msm_otg *motg = container_of(phy, struct msm_otg, phy); - int cnt = 0; - - /* initiate write operation */ - writel(ULPI_RUN | ULPI_WRITE | - ULPI_ADDR(reg) | ULPI_DATA(val), - USB_ULPI_VIEWPORT); - - /* wait for completion */ - while (cnt < ULPI_IO_TIMEOUT_USEC) { - if (!(readl(USB_ULPI_VIEWPORT) & ULPI_RUN)) - break; - udelay(1); - cnt++; - } - - if (cnt >= ULPI_IO_TIMEOUT_USEC) { - dev_err(phy->dev, "ulpi_write: timeout\n"); - return -ETIMEDOUT; - } - return 0; -} - -static struct usb_phy_io_ops msm_otg_io_ops = { - .read = ulpi_read, - .write = ulpi_write, -}; - -static void ulpi_init(struct msm_otg *motg) -{ - struct msm_otg_platform_data *pdata = motg->pdata; - int *seq = pdata->phy_init_seq, idx; - u32 addr = ULPI_EXT_VENDOR_SPECIFIC; - - for (idx = 0; idx < pdata->phy_init_sz; idx++) { - if (seq[idx] == -1) - continue; - - dev_vdbg(motg->phy.dev, "ulpi: write 0x%02x to 0x%02x\n", - seq[idx], addr + idx); - ulpi_write(&motg->phy, seq[idx], addr + idx); - } -} - -static int msm_phy_notify_disconnect(struct usb_phy *phy, - enum usb_device_speed speed) -{ - struct msm_otg *motg = container_of(phy, struct msm_otg, phy); - int val; - - if (motg->manual_pullup) { - val = ULPI_MISC_A_VBUSVLDEXT | ULPI_MISC_A_VBUSVLDEXTSEL; - usb_phy_io_write(phy, val, ULPI_CLR(ULPI_MISC_A)); - } - - /* - * Put the transceiver in non-driving mode. Otherwise host - * may not detect soft-disconnection. - */ - val = ulpi_read(phy, ULPI_FUNC_CTRL); - val &= ~ULPI_FUNC_CTRL_OPMODE_MASK; - val |= ULPI_FUNC_CTRL_OPMODE_NONDRIVING; - ulpi_write(phy, val, ULPI_FUNC_CTRL); - - return 0; -} - -static int msm_otg_link_clk_reset(struct msm_otg *motg, bool assert) -{ - int ret; - - if (assert) - ret = reset_control_assert(motg->link_rst); - else - ret = reset_control_deassert(motg->link_rst); - - if (ret) - dev_err(motg->phy.dev, "usb link clk reset %s failed\n", - assert ? "assert" : "deassert"); - - return ret; -} - -static int msm_otg_phy_clk_reset(struct msm_otg *motg) -{ - int ret = 0; - - if (motg->phy_rst) - ret = reset_control_reset(motg->phy_rst); - - if (ret) - dev_err(motg->phy.dev, "usb phy clk reset failed\n"); - - return ret; -} - -static int msm_link_reset(struct msm_otg *motg) -{ - u32 val; - int ret; - - ret = msm_otg_link_clk_reset(motg, 1); - if (ret) - return ret; - - /* wait for 1ms delay as suggested in HPG. */ - usleep_range(1000, 1200); - - ret = msm_otg_link_clk_reset(motg, 0); - if (ret) - return ret; - - if (motg->phy_number) - writel(readl(USB_PHY_CTRL2) | BIT(16), USB_PHY_CTRL2); - - /* put transceiver in serial mode as part of reset */ - val = readl(USB_PORTSC) & ~PORTSC_PTS_MASK; - writel(val | PORTSC_PTS_SERIAL, USB_PORTSC); - - return 0; -} - -static int msm_otg_reset(struct usb_phy *phy) -{ - struct msm_otg *motg = container_of(phy, struct msm_otg, phy); - int cnt = 0; - - writel(USBCMD_RESET, USB_USBCMD); - while (cnt < LINK_RESET_TIMEOUT_USEC) { - if (!(readl(USB_USBCMD) & USBCMD_RESET)) - break; - udelay(1); - cnt++; - } - if (cnt >= LINK_RESET_TIMEOUT_USEC) - return -ETIMEDOUT; - - /* select ULPI phy and clear other status/control bits in PORTSC */ - writel(PORTSC_PTS_ULPI, USB_PORTSC); - - writel(0x0, USB_AHBBURST); - writel(0x08, USB_AHBMODE); - - if (motg->phy_number) - writel(readl(USB_PHY_CTRL2) | BIT(16), USB_PHY_CTRL2); - return 0; -} - -static void msm_phy_reset(struct msm_otg *motg) -{ - void __iomem *addr; - - if (motg->pdata->phy_type != SNPS_28NM_INTEGRATED_PHY) { - msm_otg_phy_clk_reset(motg); - return; - } - - addr = USB_PHY_CTRL; - if (motg->phy_number) - addr = USB_PHY_CTRL2; - - /* Assert USB PHY_POR */ - writel(readl(addr) | PHY_POR_ASSERT, addr); - - /* - * wait for minimum 10 microseconds as suggested in HPG. - * Use a slightly larger value since the exact value didn't - * work 100% of the time. - */ - udelay(12); - - /* Deassert USB PHY_POR */ - writel(readl(addr) & ~PHY_POR_ASSERT, addr); -} - -static int msm_usb_reset(struct usb_phy *phy) -{ - struct msm_otg *motg = container_of(phy, struct msm_otg, phy); - int ret; - - if (!IS_ERR(motg->core_clk)) - clk_prepare_enable(motg->core_clk); - - ret = msm_link_reset(motg); - if (ret) { - dev_err(phy->dev, "phy_reset failed\n"); - return ret; - } - - ret = msm_otg_reset(&motg->phy); - if (ret) { - dev_err(phy->dev, "link reset failed\n"); - return ret; - } - - msleep(100); - - /* Reset USB PHY after performing USB Link RESET */ - msm_phy_reset(motg); - - if (!IS_ERR(motg->core_clk)) - clk_disable_unprepare(motg->core_clk); - - return 0; -} - -static int msm_phy_init(struct usb_phy *phy) -{ - struct msm_otg *motg = container_of(phy, struct msm_otg, phy); - struct msm_otg_platform_data *pdata = motg->pdata; - u32 val, ulpi_val = 0; - - /* Program USB PHY Override registers. */ - ulpi_init(motg); - - /* - * It is recommended in HPG to reset USB PHY after programming - * USB PHY Override registers. - */ - msm_phy_reset(motg); - - if (pdata->otg_control == OTG_PHY_CONTROL) { - val = readl(USB_OTGSC); - if (pdata->mode == USB_DR_MODE_OTG) { - ulpi_val = ULPI_INT_IDGRD | ULPI_INT_SESS_VALID; - val |= OTGSC_IDIE | OTGSC_BSVIE; - } else if (pdata->mode == USB_DR_MODE_PERIPHERAL) { - ulpi_val = ULPI_INT_SESS_VALID; - val |= OTGSC_BSVIE; - } - writel(val, USB_OTGSC); - ulpi_write(phy, ulpi_val, ULPI_USB_INT_EN_RISE); - ulpi_write(phy, ulpi_val, ULPI_USB_INT_EN_FALL); - } - - if (motg->manual_pullup) { - val = ULPI_MISC_A_VBUSVLDEXTSEL | ULPI_MISC_A_VBUSVLDEXT; - ulpi_write(phy, val, ULPI_SET(ULPI_MISC_A)); - - val = readl(USB_GENCONFIG_2); - val |= GENCONFIG_2_SESS_VLD_CTRL_EN; - writel(val, USB_GENCONFIG_2); - - val = readl(USB_USBCMD); - val |= USBCMD_SESS_VLD_CTRL; - writel(val, USB_USBCMD); - - val = ulpi_read(phy, ULPI_FUNC_CTRL); - val &= ~ULPI_FUNC_CTRL_OPMODE_MASK; - val |= ULPI_FUNC_CTRL_OPMODE_NORMAL; - ulpi_write(phy, val, ULPI_FUNC_CTRL); - } - - if (motg->phy_number) - writel(readl(USB_PHY_CTRL2) | BIT(16), USB_PHY_CTRL2); - - return 0; -} - -#define PHY_SUSPEND_TIMEOUT_USEC (500 * 1000) -#define PHY_RESUME_TIMEOUT_USEC (100 * 1000) - -#ifdef CONFIG_PM - -static int msm_hsusb_config_vddcx(struct msm_otg *motg, int high) -{ - int max_vol = motg->vdd_levels[VDD_LEVEL_MAX]; - int min_vol; - int ret; - - if (high) - min_vol = motg->vdd_levels[VDD_LEVEL_MIN]; - else - min_vol = motg->vdd_levels[VDD_LEVEL_NONE]; - - ret = regulator_set_voltage(motg->vddcx, min_vol, max_vol); - if (ret) { - pr_err("Cannot set vddcx voltage\n"); - return ret; - } - - pr_debug("%s: min_vol:%d max_vol:%d\n", __func__, min_vol, max_vol); - - return ret; -} - -static int msm_otg_suspend(struct msm_otg *motg) -{ - struct usb_phy *phy = &motg->phy; - struct usb_bus *bus = phy->otg->host; - struct msm_otg_platform_data *pdata = motg->pdata; - void __iomem *addr; - int cnt = 0; - - if (atomic_read(&motg->in_lpm)) - return 0; - - disable_irq(motg->irq); - /* - * Chipidea 45-nm PHY suspend sequence: - * - * Interrupt Latch Register auto-clear feature is not present - * in all PHY versions. Latch register is clear on read type. - * Clear latch register to avoid spurious wakeup from - * low power mode (LPM). - * - * PHY comparators are disabled when PHY enters into low power - * mode (LPM). Keep PHY comparators ON in LPM only when we expect - * VBUS/Id notifications from USB PHY. Otherwise turn off USB - * PHY comparators. This save significant amount of power. - * - * PLL is not turned off when PHY enters into low power mode (LPM). - * Disable PLL for maximum power savings. - */ - - if (motg->pdata->phy_type == CI_45NM_INTEGRATED_PHY) { - ulpi_read(phy, 0x14); - if (pdata->otg_control == OTG_PHY_CONTROL) - ulpi_write(phy, 0x01, 0x30); - ulpi_write(phy, 0x08, 0x09); - } - - /* - * PHY may take some time or even fail to enter into low power - * mode (LPM). Hence poll for 500 msec and reset the PHY and link - * in failure case. - */ - writel(readl(USB_PORTSC) | PORTSC_PHCD, USB_PORTSC); - while (cnt < PHY_SUSPEND_TIMEOUT_USEC) { - if (readl(USB_PORTSC) & PORTSC_PHCD) - break; - udelay(1); - cnt++; - } - - if (cnt >= PHY_SUSPEND_TIMEOUT_USEC) { - dev_err(phy->dev, "Unable to suspend PHY\n"); - msm_otg_reset(phy); - enable_irq(motg->irq); - return -ETIMEDOUT; - } - - /* - * PHY has capability to generate interrupt asynchronously in low - * power mode (LPM). This interrupt is level triggered. So USB IRQ - * line must be disabled till async interrupt enable bit is cleared - * in USBCMD register. Assert STP (ULPI interface STOP signal) to - * block data communication from PHY. - */ - writel(readl(USB_USBCMD) | ASYNC_INTR_CTRL | ULPI_STP_CTRL, USB_USBCMD); - - addr = USB_PHY_CTRL; - if (motg->phy_number) - addr = USB_PHY_CTRL2; - - if (motg->pdata->phy_type == SNPS_28NM_INTEGRATED_PHY && - motg->pdata->otg_control == OTG_PMIC_CONTROL) - writel(readl(addr) | PHY_RETEN, addr); - - clk_disable_unprepare(motg->pclk); - clk_disable_unprepare(motg->clk); - if (!IS_ERR(motg->core_clk)) - clk_disable_unprepare(motg->core_clk); - - if (motg->pdata->phy_type == SNPS_28NM_INTEGRATED_PHY && - motg->pdata->otg_control == OTG_PMIC_CONTROL) { - msm_hsusb_ldo_set_mode(motg, 0); - msm_hsusb_config_vddcx(motg, 0); - } - - if (device_may_wakeup(phy->dev)) - enable_irq_wake(motg->irq); - if (bus) - clear_bit(HCD_FLAG_HW_ACCESSIBLE, &(bus_to_hcd(bus))->flags); - - atomic_set(&motg->in_lpm, 1); - enable_irq(motg->irq); - - dev_info(phy->dev, "USB in low power mode\n"); - - return 0; -} - -static int msm_otg_resume(struct msm_otg *motg) -{ - struct usb_phy *phy = &motg->phy; - struct usb_bus *bus = phy->otg->host; - void __iomem *addr; - int cnt = 0; - unsigned temp; - - if (!atomic_read(&motg->in_lpm)) - return 0; - - clk_prepare_enable(motg->pclk); - clk_prepare_enable(motg->clk); - if (!IS_ERR(motg->core_clk)) - clk_prepare_enable(motg->core_clk); - - if (motg->pdata->phy_type == SNPS_28NM_INTEGRATED_PHY && - motg->pdata->otg_control == OTG_PMIC_CONTROL) { - - addr = USB_PHY_CTRL; - if (motg->phy_number) - addr = USB_PHY_CTRL2; - - msm_hsusb_ldo_set_mode(motg, 1); - msm_hsusb_config_vddcx(motg, 1); - writel(readl(addr) & ~PHY_RETEN, addr); - } - - temp = readl(USB_USBCMD); - temp &= ~ASYNC_INTR_CTRL; - temp &= ~ULPI_STP_CTRL; - writel(temp, USB_USBCMD); - - /* - * PHY comes out of low power mode (LPM) in case of wakeup - * from asynchronous interrupt. - */ - if (!(readl(USB_PORTSC) & PORTSC_PHCD)) - goto skip_phy_resume; - - writel(readl(USB_PORTSC) & ~PORTSC_PHCD, USB_PORTSC); - while (cnt < PHY_RESUME_TIMEOUT_USEC) { - if (!(readl(USB_PORTSC) & PORTSC_PHCD)) - break; - udelay(1); - cnt++; - } - - if (cnt >= PHY_RESUME_TIMEOUT_USEC) { - /* - * This is a fatal error. Reset the link and - * PHY. USB state can not be restored. Re-insertion - * of USB cable is the only way to get USB working. - */ - dev_err(phy->dev, "Unable to resume USB. Re-plugin the cable\n"); - msm_otg_reset(phy); - } - -skip_phy_resume: - if (device_may_wakeup(phy->dev)) - disable_irq_wake(motg->irq); - if (bus) - set_bit(HCD_FLAG_HW_ACCESSIBLE, &(bus_to_hcd(bus))->flags); - - atomic_set(&motg->in_lpm, 0); - - if (motg->async_int) { - motg->async_int = 0; - pm_runtime_put(phy->dev); - enable_irq(motg->irq); - } - - dev_info(phy->dev, "USB exited from low power mode\n"); - - return 0; -} -#endif - -static void msm_otg_notify_charger(struct msm_otg *motg, unsigned mA) -{ - if (motg->cur_power == mA) - return; - - /* TODO: Notify PMIC about available current */ - dev_info(motg->phy.dev, "Avail curr from USB = %u\n", mA); - motg->cur_power = mA; -} - -static void msm_otg_start_host(struct usb_phy *phy, int on) -{ - struct msm_otg *motg = container_of(phy, struct msm_otg, phy); - struct msm_otg_platform_data *pdata = motg->pdata; - struct usb_hcd *hcd; - - if (!phy->otg->host) - return; - - hcd = bus_to_hcd(phy->otg->host); - - if (on) { - dev_dbg(phy->dev, "host on\n"); - - if (pdata->vbus_power) - pdata->vbus_power(1); - /* - * Some boards have a switch cotrolled by gpio - * to enable/disable internal HUB. Enable internal - * HUB before kicking the host. - */ - if (pdata->setup_gpio) - pdata->setup_gpio(OTG_STATE_A_HOST); -#ifdef CONFIG_USB - usb_add_hcd(hcd, hcd->irq, IRQF_SHARED); - device_wakeup_enable(hcd->self.controller); -#endif - } else { - dev_dbg(phy->dev, "host off\n"); - -#ifdef CONFIG_USB - usb_remove_hcd(hcd); -#endif - if (pdata->setup_gpio) - pdata->setup_gpio(OTG_STATE_UNDEFINED); - if (pdata->vbus_power) - pdata->vbus_power(0); - } -} - -static int msm_otg_set_host(struct usb_otg *otg, struct usb_bus *host) -{ - struct msm_otg *motg = container_of(otg->usb_phy, struct msm_otg, phy); - struct usb_hcd *hcd; - - /* - * Fail host registration if this board can support - * only peripheral configuration. - */ - if (motg->pdata->mode == USB_DR_MODE_PERIPHERAL) { - dev_info(otg->usb_phy->dev, "Host mode is not supported\n"); - return -ENODEV; - } - - if (!host) { - if (otg->state == OTG_STATE_A_HOST) { - pm_runtime_get_sync(otg->usb_phy->dev); - msm_otg_start_host(otg->usb_phy, 0); - otg->host = NULL; - otg->state = OTG_STATE_UNDEFINED; - schedule_work(&motg->sm_work); - } else { - otg->host = NULL; - } - - return 0; - } - - hcd = bus_to_hcd(host); - hcd->power_budget = motg->pdata->power_budget; - - otg->host = host; - dev_dbg(otg->usb_phy->dev, "host driver registered w/ tranceiver\n"); - - pm_runtime_get_sync(otg->usb_phy->dev); - schedule_work(&motg->sm_work); - - return 0; -} - -static void msm_otg_start_peripheral(struct usb_phy *phy, int on) -{ - struct msm_otg *motg = container_of(phy, struct msm_otg, phy); - struct msm_otg_platform_data *pdata = motg->pdata; - - if (!phy->otg->gadget) - return; - - if (on) { - dev_dbg(phy->dev, "gadget on\n"); - /* - * Some boards have a switch cotrolled by gpio - * to enable/disable internal HUB. Disable internal - * HUB before kicking the gadget. - */ - if (pdata->setup_gpio) - pdata->setup_gpio(OTG_STATE_B_PERIPHERAL); - usb_gadget_vbus_connect(phy->otg->gadget); - } else { - dev_dbg(phy->dev, "gadget off\n"); - usb_gadget_vbus_disconnect(phy->otg->gadget); - if (pdata->setup_gpio) - pdata->setup_gpio(OTG_STATE_UNDEFINED); - } - -} - -static int msm_otg_set_peripheral(struct usb_otg *otg, - struct usb_gadget *gadget) -{ - struct msm_otg *motg = container_of(otg->usb_phy, struct msm_otg, phy); - - /* - * Fail peripheral registration if this board can support - * only host configuration. - */ - if (motg->pdata->mode == USB_DR_MODE_HOST) { - dev_info(otg->usb_phy->dev, "Peripheral mode is not supported\n"); - return -ENODEV; - } - - if (!gadget) { - if (otg->state == OTG_STATE_B_PERIPHERAL) { - pm_runtime_get_sync(otg->usb_phy->dev); - msm_otg_start_peripheral(otg->usb_phy, 0); - otg->gadget = NULL; - otg->state = OTG_STATE_UNDEFINED; - schedule_work(&motg->sm_work); - } else { - otg->gadget = NULL; - } - - return 0; - } - otg->gadget = gadget; - dev_dbg(otg->usb_phy->dev, - "peripheral driver registered w/ tranceiver\n"); - - pm_runtime_get_sync(otg->usb_phy->dev); - schedule_work(&motg->sm_work); - - return 0; -} - -static bool msm_chg_check_secondary_det(struct msm_otg *motg) -{ - struct usb_phy *phy = &motg->phy; - u32 chg_det; - bool ret = false; - - switch (motg->pdata->phy_type) { - case CI_45NM_INTEGRATED_PHY: - chg_det = ulpi_read(phy, 0x34); - ret = chg_det & (1 << 4); - break; - case SNPS_28NM_INTEGRATED_PHY: - chg_det = ulpi_read(phy, 0x87); - ret = chg_det & 1; - break; - default: - break; - } - return ret; -} - -static void msm_chg_enable_secondary_det(struct msm_otg *motg) -{ - struct usb_phy *phy = &motg->phy; - u32 chg_det; - - switch (motg->pdata->phy_type) { - case CI_45NM_INTEGRATED_PHY: - chg_det = ulpi_read(phy, 0x34); - /* Turn off charger block */ - chg_det |= ~(1 << 1); - ulpi_write(phy, chg_det, 0x34); - udelay(20); - /* control chg block via ULPI */ - chg_det &= ~(1 << 3); - ulpi_write(phy, chg_det, 0x34); - /* put it in host mode for enabling D- source */ - chg_det &= ~(1 << 2); - ulpi_write(phy, chg_det, 0x34); - /* Turn on chg detect block */ - chg_det &= ~(1 << 1); - ulpi_write(phy, chg_det, 0x34); - udelay(20); - /* enable chg detection */ - chg_det &= ~(1 << 0); - ulpi_write(phy, chg_det, 0x34); - break; - case SNPS_28NM_INTEGRATED_PHY: - /* - * Configure DM as current source, DP as current sink - * and enable battery charging comparators. - */ - ulpi_write(phy, 0x8, 0x85); - ulpi_write(phy, 0x2, 0x85); - ulpi_write(phy, 0x1, 0x85); - break; - default: - break; - } -} - -static bool msm_chg_check_primary_det(struct msm_otg *motg) -{ - struct usb_phy *phy = &motg->phy; - u32 chg_det; - bool ret = false; - - switch (motg->pdata->phy_type) { - case CI_45NM_INTEGRATED_PHY: - chg_det = ulpi_read(phy, 0x34); - ret = chg_det & (1 << 4); - break; - case SNPS_28NM_INTEGRATED_PHY: - chg_det = ulpi_read(phy, 0x87); - ret = chg_det & 1; - break; - default: - break; - } - return ret; -} - -static void msm_chg_enable_primary_det(struct msm_otg *motg) -{ - struct usb_phy *phy = &motg->phy; - u32 chg_det; - - switch (motg->pdata->phy_type) { - case CI_45NM_INTEGRATED_PHY: - chg_det = ulpi_read(phy, 0x34); - /* enable chg detection */ - chg_det &= ~(1 << 0); - ulpi_write(phy, chg_det, 0x34); - break; - case SNPS_28NM_INTEGRATED_PHY: - /* - * Configure DP as current source, DM as current sink - * and enable battery charging comparators. - */ - ulpi_write(phy, 0x2, 0x85); - ulpi_write(phy, 0x1, 0x85); - break; - default: - break; - } -} - -static bool msm_chg_check_dcd(struct msm_otg *motg) -{ - struct usb_phy *phy = &motg->phy; - u32 line_state; - bool ret = false; - - switch (motg->pdata->phy_type) { - case CI_45NM_INTEGRATED_PHY: - line_state = ulpi_read(phy, 0x15); - ret = !(line_state & 1); - break; - case SNPS_28NM_INTEGRATED_PHY: - line_state = ulpi_read(phy, 0x87); - ret = line_state & 2; - break; - default: - break; - } - return ret; -} - -static void msm_chg_disable_dcd(struct msm_otg *motg) -{ - struct usb_phy *phy = &motg->phy; - u32 chg_det; - - switch (motg->pdata->phy_type) { - case CI_45NM_INTEGRATED_PHY: - chg_det = ulpi_read(phy, 0x34); - chg_det &= ~(1 << 5); - ulpi_write(phy, chg_det, 0x34); - break; - case SNPS_28NM_INTEGRATED_PHY: - ulpi_write(phy, 0x10, 0x86); - break; - default: - break; - } -} - -static void msm_chg_enable_dcd(struct msm_otg *motg) -{ - struct usb_phy *phy = &motg->phy; - u32 chg_det; - - switch (motg->pdata->phy_type) { - case CI_45NM_INTEGRATED_PHY: - chg_det = ulpi_read(phy, 0x34); - /* Turn on D+ current source */ - chg_det |= (1 << 5); - ulpi_write(phy, chg_det, 0x34); - break; - case SNPS_28NM_INTEGRATED_PHY: - /* Data contact detection enable */ - ulpi_write(phy, 0x10, 0x85); - break; - default: - break; - } -} - -static void msm_chg_block_on(struct msm_otg *motg) -{ - struct usb_phy *phy = &motg->phy; - u32 func_ctrl, chg_det; - - /* put the controller in non-driving mode */ - func_ctrl = ulpi_read(phy, ULPI_FUNC_CTRL); - func_ctrl &= ~ULPI_FUNC_CTRL_OPMODE_MASK; - func_ctrl |= ULPI_FUNC_CTRL_OPMODE_NONDRIVING; - ulpi_write(phy, func_ctrl, ULPI_FUNC_CTRL); - - switch (motg->pdata->phy_type) { - case CI_45NM_INTEGRATED_PHY: - chg_det = ulpi_read(phy, 0x34); - /* control chg block via ULPI */ - chg_det &= ~(1 << 3); - ulpi_write(phy, chg_det, 0x34); - /* Turn on chg detect block */ - chg_det &= ~(1 << 1); - ulpi_write(phy, chg_det, 0x34); - udelay(20); - break; - case SNPS_28NM_INTEGRATED_PHY: - /* Clear charger detecting control bits */ - ulpi_write(phy, 0x3F, 0x86); - /* Clear alt interrupt latch and enable bits */ - ulpi_write(phy, 0x1F, 0x92); - ulpi_write(phy, 0x1F, 0x95); - udelay(100); - break; - default: - break; - } -} - -static void msm_chg_block_off(struct msm_otg *motg) -{ - struct usb_phy *phy = &motg->phy; - u32 func_ctrl, chg_det; - - switch (motg->pdata->phy_type) { - case CI_45NM_INTEGRATED_PHY: - chg_det = ulpi_read(phy, 0x34); - /* Turn off charger block */ - chg_det |= ~(1 << 1); - ulpi_write(phy, chg_det, 0x34); - break; - case SNPS_28NM_INTEGRATED_PHY: - /* Clear charger detecting control bits */ - ulpi_write(phy, 0x3F, 0x86); - /* Clear alt interrupt latch and enable bits */ - ulpi_write(phy, 0x1F, 0x92); - ulpi_write(phy, 0x1F, 0x95); - break; - default: - break; - } - - /* put the controller in normal mode */ - func_ctrl = ulpi_read(phy, ULPI_FUNC_CTRL); - func_ctrl &= ~ULPI_FUNC_CTRL_OPMODE_MASK; - func_ctrl |= ULPI_FUNC_CTRL_OPMODE_NORMAL; - ulpi_write(phy, func_ctrl, ULPI_FUNC_CTRL); -} - -#define MSM_CHG_DCD_POLL_TIME (100 * HZ/1000) /* 100 msec */ -#define MSM_CHG_DCD_MAX_RETRIES 6 /* Tdcd_tmout = 6 * 100 msec */ -#define MSM_CHG_PRIMARY_DET_TIME (40 * HZ/1000) /* TVDPSRC_ON */ -#define MSM_CHG_SECONDARY_DET_TIME (40 * HZ/1000) /* TVDMSRC_ON */ -static void msm_chg_detect_work(struct work_struct *w) -{ - struct msm_otg *motg = container_of(w, struct msm_otg, chg_work.work); - struct usb_phy *phy = &motg->phy; - bool is_dcd, tmout, vout; - unsigned long delay; - - dev_dbg(phy->dev, "chg detection work\n"); - switch (motg->chg_state) { - case USB_CHG_STATE_UNDEFINED: - pm_runtime_get_sync(phy->dev); - msm_chg_block_on(motg); - msm_chg_enable_dcd(motg); - motg->chg_state = USB_CHG_STATE_WAIT_FOR_DCD; - motg->dcd_retries = 0; - delay = MSM_CHG_DCD_POLL_TIME; - break; - case USB_CHG_STATE_WAIT_FOR_DCD: - is_dcd = msm_chg_check_dcd(motg); - tmout = ++motg->dcd_retries == MSM_CHG_DCD_MAX_RETRIES; - if (is_dcd || tmout) { - msm_chg_disable_dcd(motg); - msm_chg_enable_primary_det(motg); - delay = MSM_CHG_PRIMARY_DET_TIME; - motg->chg_state = USB_CHG_STATE_DCD_DONE; - } else { - delay = MSM_CHG_DCD_POLL_TIME; - } - break; - case USB_CHG_STATE_DCD_DONE: - vout = msm_chg_check_primary_det(motg); - if (vout) { - msm_chg_enable_secondary_det(motg); - delay = MSM_CHG_SECONDARY_DET_TIME; - motg->chg_state = USB_CHG_STATE_PRIMARY_DONE; - } else { - motg->chg_type = USB_SDP_CHARGER; - motg->chg_state = USB_CHG_STATE_DETECTED; - delay = 0; - } - break; - case USB_CHG_STATE_PRIMARY_DONE: - vout = msm_chg_check_secondary_det(motg); - if (vout) - motg->chg_type = USB_DCP_CHARGER; - else - motg->chg_type = USB_CDP_CHARGER; - motg->chg_state = USB_CHG_STATE_SECONDARY_DONE; - /* fall through */ - case USB_CHG_STATE_SECONDARY_DONE: - motg->chg_state = USB_CHG_STATE_DETECTED; - case USB_CHG_STATE_DETECTED: - msm_chg_block_off(motg); - dev_dbg(phy->dev, "charger = %d\n", motg->chg_type); - schedule_work(&motg->sm_work); - return; - default: - return; - } - - schedule_delayed_work(&motg->chg_work, delay); -} - -/* - * We support OTG, Peripheral only and Host only configurations. In case - * of OTG, mode switch (host-->peripheral/peripheral-->host) can happen - * via Id pin status or user request (debugfs). Id/BSV interrupts are not - * enabled when switch is controlled by user and default mode is supplied - * by board file, which can be changed by userspace later. - */ -static void msm_otg_init_sm(struct msm_otg *motg) -{ - struct msm_otg_platform_data *pdata = motg->pdata; - u32 otgsc = readl(USB_OTGSC); - - switch (pdata->mode) { - case USB_DR_MODE_OTG: - if (pdata->otg_control == OTG_PHY_CONTROL) { - if (otgsc & OTGSC_ID) - set_bit(ID, &motg->inputs); - else - clear_bit(ID, &motg->inputs); - - if (otgsc & OTGSC_BSV) - set_bit(B_SESS_VLD, &motg->inputs); - else - clear_bit(B_SESS_VLD, &motg->inputs); - } else if (pdata->otg_control == OTG_USER_CONTROL) { - set_bit(ID, &motg->inputs); - clear_bit(B_SESS_VLD, &motg->inputs); - } - break; - case USB_DR_MODE_HOST: - clear_bit(ID, &motg->inputs); - break; - case USB_DR_MODE_PERIPHERAL: - set_bit(ID, &motg->inputs); - if (otgsc & OTGSC_BSV) - set_bit(B_SESS_VLD, &motg->inputs); - else - clear_bit(B_SESS_VLD, &motg->inputs); - break; - default: - break; - } -} - -static void msm_otg_sm_work(struct work_struct *w) -{ - struct msm_otg *motg = container_of(w, struct msm_otg, sm_work); - struct usb_otg *otg = motg->phy.otg; - - switch (otg->state) { - case OTG_STATE_UNDEFINED: - dev_dbg(otg->usb_phy->dev, "OTG_STATE_UNDEFINED state\n"); - msm_otg_reset(otg->usb_phy); - msm_otg_init_sm(motg); - otg->state = OTG_STATE_B_IDLE; - /* FALL THROUGH */ - case OTG_STATE_B_IDLE: - dev_dbg(otg->usb_phy->dev, "OTG_STATE_B_IDLE state\n"); - if (!test_bit(ID, &motg->inputs) && otg->host) { - /* disable BSV bit */ - writel(readl(USB_OTGSC) & ~OTGSC_BSVIE, USB_OTGSC); - msm_otg_start_host(otg->usb_phy, 1); - otg->state = OTG_STATE_A_HOST; - } else if (test_bit(B_SESS_VLD, &motg->inputs)) { - switch (motg->chg_state) { - case USB_CHG_STATE_UNDEFINED: - msm_chg_detect_work(&motg->chg_work.work); - break; - case USB_CHG_STATE_DETECTED: - switch (motg->chg_type) { - case USB_DCP_CHARGER: - msm_otg_notify_charger(motg, - IDEV_CHG_MAX); - break; - case USB_CDP_CHARGER: - msm_otg_notify_charger(motg, - IDEV_CHG_MAX); - msm_otg_start_peripheral(otg->usb_phy, - 1); - otg->state - = OTG_STATE_B_PERIPHERAL; - break; - case USB_SDP_CHARGER: - msm_otg_notify_charger(motg, IUNIT); - msm_otg_start_peripheral(otg->usb_phy, - 1); - otg->state - = OTG_STATE_B_PERIPHERAL; - break; - default: - break; - } - break; - default: - break; - } - } else { - /* - * If charger detection work is pending, decrement - * the pm usage counter to balance with the one that - * is incremented in charger detection work. - */ - if (cancel_delayed_work_sync(&motg->chg_work)) { - pm_runtime_put_sync(otg->usb_phy->dev); - msm_otg_reset(otg->usb_phy); - } - msm_otg_notify_charger(motg, 0); - motg->chg_state = USB_CHG_STATE_UNDEFINED; - motg->chg_type = USB_INVALID_CHARGER; - } - - if (otg->state == OTG_STATE_B_IDLE) - pm_runtime_put_sync(otg->usb_phy->dev); - break; - case OTG_STATE_B_PERIPHERAL: - dev_dbg(otg->usb_phy->dev, "OTG_STATE_B_PERIPHERAL state\n"); - if (!test_bit(B_SESS_VLD, &motg->inputs) || - !test_bit(ID, &motg->inputs)) { - msm_otg_notify_charger(motg, 0); - msm_otg_start_peripheral(otg->usb_phy, 0); - motg->chg_state = USB_CHG_STATE_UNDEFINED; - motg->chg_type = USB_INVALID_CHARGER; - otg->state = OTG_STATE_B_IDLE; - msm_otg_reset(otg->usb_phy); - schedule_work(w); - } - break; - case OTG_STATE_A_HOST: - dev_dbg(otg->usb_phy->dev, "OTG_STATE_A_HOST state\n"); - if (test_bit(ID, &motg->inputs)) { - msm_otg_start_host(otg->usb_phy, 0); - otg->state = OTG_STATE_B_IDLE; - msm_otg_reset(otg->usb_phy); - schedule_work(w); - } - break; - default: - break; - } -} - -static irqreturn_t msm_otg_irq(int irq, void *data) -{ - struct msm_otg *motg = data; - struct usb_phy *phy = &motg->phy; - u32 otgsc = 0; - - if (atomic_read(&motg->in_lpm)) { - disable_irq_nosync(irq); - motg->async_int = 1; - pm_runtime_get(phy->dev); - return IRQ_HANDLED; - } - - otgsc = readl(USB_OTGSC); - if (!(otgsc & (OTGSC_IDIS | OTGSC_BSVIS))) - return IRQ_NONE; - - if ((otgsc & OTGSC_IDIS) && (otgsc & OTGSC_IDIE)) { - if (otgsc & OTGSC_ID) - set_bit(ID, &motg->inputs); - else - clear_bit(ID, &motg->inputs); - dev_dbg(phy->dev, "ID set/clear\n"); - pm_runtime_get_noresume(phy->dev); - } else if ((otgsc & OTGSC_BSVIS) && (otgsc & OTGSC_BSVIE)) { - if (otgsc & OTGSC_BSV) - set_bit(B_SESS_VLD, &motg->inputs); - else - clear_bit(B_SESS_VLD, &motg->inputs); - dev_dbg(phy->dev, "BSV set/clear\n"); - pm_runtime_get_noresume(phy->dev); - } - - writel(otgsc, USB_OTGSC); - schedule_work(&motg->sm_work); - return IRQ_HANDLED; -} - -static int msm_otg_mode_show(struct seq_file *s, void *unused) -{ - struct msm_otg *motg = s->private; - struct usb_otg *otg = motg->phy.otg; - - switch (otg->state) { - case OTG_STATE_A_HOST: - seq_puts(s, "host\n"); - break; - case OTG_STATE_B_PERIPHERAL: - seq_puts(s, "peripheral\n"); - break; - default: - seq_puts(s, "none\n"); - break; - } - - return 0; -} - -static int msm_otg_mode_open(struct inode *inode, struct file *file) -{ - return single_open(file, msm_otg_mode_show, inode->i_private); -} - -static ssize_t msm_otg_mode_write(struct file *file, const char __user *ubuf, - size_t count, loff_t *ppos) -{ - struct seq_file *s = file->private_data; - struct msm_otg *motg = s->private; - char buf[16]; - struct usb_otg *otg = motg->phy.otg; - int status = count; - enum usb_dr_mode req_mode; - - memset(buf, 0x00, sizeof(buf)); - - if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count))) { - status = -EFAULT; - goto out; - } - - if (!strncmp(buf, "host", 4)) { - req_mode = USB_DR_MODE_HOST; - } else if (!strncmp(buf, "peripheral", 10)) { - req_mode = USB_DR_MODE_PERIPHERAL; - } else if (!strncmp(buf, "none", 4)) { - req_mode = USB_DR_MODE_UNKNOWN; - } else { - status = -EINVAL; - goto out; - } - - switch (req_mode) { - case USB_DR_MODE_UNKNOWN: - switch (otg->state) { - case OTG_STATE_A_HOST: - case OTG_STATE_B_PERIPHERAL: - set_bit(ID, &motg->inputs); - clear_bit(B_SESS_VLD, &motg->inputs); - break; - default: - goto out; - } - break; - case USB_DR_MODE_PERIPHERAL: - switch (otg->state) { - case OTG_STATE_B_IDLE: - case OTG_STATE_A_HOST: - set_bit(ID, &motg->inputs); - set_bit(B_SESS_VLD, &motg->inputs); - break; - default: - goto out; - } - break; - case USB_DR_MODE_HOST: - switch (otg->state) { - case OTG_STATE_B_IDLE: - case OTG_STATE_B_PERIPHERAL: - clear_bit(ID, &motg->inputs); - break; - default: - goto out; - } - break; - default: - goto out; - } - - pm_runtime_get_sync(otg->usb_phy->dev); - schedule_work(&motg->sm_work); -out: - return status; -} - -static const struct file_operations msm_otg_mode_fops = { - .open = msm_otg_mode_open, - .read = seq_read, - .write = msm_otg_mode_write, - .llseek = seq_lseek, - .release = single_release, -}; - -static struct dentry *msm_otg_dbg_root; -static struct dentry *msm_otg_dbg_mode; - -static int msm_otg_debugfs_init(struct msm_otg *motg) -{ - msm_otg_dbg_root = debugfs_create_dir("msm_otg", NULL); - - if (!msm_otg_dbg_root || IS_ERR(msm_otg_dbg_root)) - return -ENODEV; - - msm_otg_dbg_mode = debugfs_create_file("mode", S_IRUGO | S_IWUSR, - msm_otg_dbg_root, motg, &msm_otg_mode_fops); - if (!msm_otg_dbg_mode) { - debugfs_remove(msm_otg_dbg_root); - msm_otg_dbg_root = NULL; - return -ENODEV; - } - - return 0; -} - -static void msm_otg_debugfs_cleanup(void) -{ - debugfs_remove(msm_otg_dbg_mode); - debugfs_remove(msm_otg_dbg_root); -} - -static const struct of_device_id msm_otg_dt_match[] = { - { - .compatible = "qcom,usb-otg-ci", - .data = (void *) CI_45NM_INTEGRATED_PHY - }, - { - .compatible = "qcom,usb-otg-snps", - .data = (void *) SNPS_28NM_INTEGRATED_PHY - }, - { } -}; -MODULE_DEVICE_TABLE(of, msm_otg_dt_match); - -static int msm_otg_vbus_notifier(struct notifier_block *nb, unsigned long event, - void *ptr) -{ - struct usb_phy *usb_phy = container_of(nb, struct usb_phy, vbus_nb); - struct msm_otg *motg = container_of(usb_phy, struct msm_otg, phy); - - if (event) - set_bit(B_SESS_VLD, &motg->inputs); - else - clear_bit(B_SESS_VLD, &motg->inputs); - - if (test_bit(B_SESS_VLD, &motg->inputs)) { - /* Switch D+/D- lines to Device connector */ - gpiod_set_value_cansleep(motg->switch_gpio, 0); - } else { - /* Switch D+/D- lines to Hub */ - gpiod_set_value_cansleep(motg->switch_gpio, 1); - } - - schedule_work(&motg->sm_work); - - return NOTIFY_DONE; -} - -static int msm_otg_id_notifier(struct notifier_block *nb, unsigned long event, - void *ptr) -{ - struct usb_phy *usb_phy = container_of(nb, struct usb_phy, id_nb); - struct msm_otg *motg = container_of(usb_phy, struct msm_otg, phy); - - if (event) - clear_bit(ID, &motg->inputs); - else - set_bit(ID, &motg->inputs); - - schedule_work(&motg->sm_work); - - return NOTIFY_DONE; -} - -static int msm_otg_read_dt(struct platform_device *pdev, struct msm_otg *motg) -{ - struct msm_otg_platform_data *pdata; - struct device_node *node = pdev->dev.of_node; - struct property *prop; - int len, ret, words; - u32 val, tmp[3]; - - pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL); - if (!pdata) - return -ENOMEM; - - motg->pdata = pdata; - - pdata->phy_type = (enum msm_usb_phy_type)of_device_get_match_data(&pdev->dev); - if (!pdata->phy_type) - return 1; - - motg->link_rst = devm_reset_control_get(&pdev->dev, "link"); - if (IS_ERR(motg->link_rst)) - return PTR_ERR(motg->link_rst); - - motg->phy_rst = devm_reset_control_get(&pdev->dev, "phy"); - if (IS_ERR(motg->phy_rst)) - motg->phy_rst = NULL; - - pdata->mode = usb_get_dr_mode(&pdev->dev); - if (pdata->mode == USB_DR_MODE_UNKNOWN) - pdata->mode = USB_DR_MODE_OTG; - - pdata->otg_control = OTG_PHY_CONTROL; - if (!of_property_read_u32(node, "qcom,otg-control", &val)) - if (val == OTG_PMIC_CONTROL) - pdata->otg_control = val; - - if (!of_property_read_u32(node, "qcom,phy-num", &val) && val < 2) - motg->phy_number = val; - - motg->vdd_levels[VDD_LEVEL_NONE] = USB_PHY_SUSP_DIG_VOL; - motg->vdd_levels[VDD_LEVEL_MIN] = USB_PHY_VDD_DIG_VOL_MIN; - motg->vdd_levels[VDD_LEVEL_MAX] = USB_PHY_VDD_DIG_VOL_MAX; - - if (of_get_property(node, "qcom,vdd-levels", &len) && - len == sizeof(tmp)) { - of_property_read_u32_array(node, "qcom,vdd-levels", - tmp, len / sizeof(*tmp)); - motg->vdd_levels[VDD_LEVEL_NONE] = tmp[VDD_LEVEL_NONE]; - motg->vdd_levels[VDD_LEVEL_MIN] = tmp[VDD_LEVEL_MIN]; - motg->vdd_levels[VDD_LEVEL_MAX] = tmp[VDD_LEVEL_MAX]; - } - - motg->manual_pullup = of_property_read_bool(node, "qcom,manual-pullup"); - - motg->switch_gpio = devm_gpiod_get_optional(&pdev->dev, "switch", - GPIOD_OUT_LOW); - if (IS_ERR(motg->switch_gpio)) - return PTR_ERR(motg->switch_gpio); - - prop = of_find_property(node, "qcom,phy-init-sequence", &len); - if (!prop || !len) - return 0; - - words = len / sizeof(u32); - - if (words >= ULPI_EXT_VENDOR_SPECIFIC) { - dev_warn(&pdev->dev, "Too big PHY init sequence %d\n", words); - return 0; - } - - pdata->phy_init_seq = devm_kzalloc(&pdev->dev, len, GFP_KERNEL); - if (!pdata->phy_init_seq) - return 0; - - ret = of_property_read_u32_array(node, "qcom,phy-init-sequence", - pdata->phy_init_seq, words); - if (!ret) - pdata->phy_init_sz = words; - - return 0; -} - -static int msm_otg_reboot_notify(struct notifier_block *this, - unsigned long code, void *unused) -{ - struct msm_otg *motg = container_of(this, struct msm_otg, reboot); - - /* - * Ensure that D+/D- lines are routed to uB connector, so - * we could load bootloader/kernel at next reboot - */ - gpiod_set_value_cansleep(motg->switch_gpio, 0); - return NOTIFY_DONE; -} - -static int msm_otg_probe(struct platform_device *pdev) -{ - int ret = 0; - struct device_node *np = pdev->dev.of_node; - struct msm_otg_platform_data *pdata; - struct resource *res; - struct msm_otg *motg; - struct usb_phy *phy; - void __iomem *phy_select; - - motg = devm_kzalloc(&pdev->dev, sizeof(struct msm_otg), GFP_KERNEL); - if (!motg) - return -ENOMEM; - - motg->phy.otg = devm_kzalloc(&pdev->dev, sizeof(struct usb_otg), - GFP_KERNEL); - if (!motg->phy.otg) - return -ENOMEM; - - phy = &motg->phy; - phy->dev = &pdev->dev; - - motg->clk = devm_clk_get(&pdev->dev, np ? "core" : "usb_hs_clk"); - if (IS_ERR(motg->clk)) { - dev_err(&pdev->dev, "failed to get usb_hs_clk\n"); - return PTR_ERR(motg->clk); - } - - /* - * If USB Core is running its protocol engine based on CORE CLK, - * CORE CLK must be running at >55Mhz for correct HSUSB - * operation and USB core cannot tolerate frequency changes on - * CORE CLK. - */ - motg->pclk = devm_clk_get(&pdev->dev, np ? "iface" : "usb_hs_pclk"); - if (IS_ERR(motg->pclk)) { - dev_err(&pdev->dev, "failed to get usb_hs_pclk\n"); - return PTR_ERR(motg->pclk); - } - - /* - * USB core clock is not present on all MSM chips. This - * clock is introduced to remove the dependency on AXI - * bus frequency. - */ - motg->core_clk = devm_clk_get(&pdev->dev, - np ? "alt_core" : "usb_hs_core_clk"); - - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - if (!res) - return -EINVAL; - motg->regs = devm_ioremap(&pdev->dev, res->start, resource_size(res)); - if (!motg->regs) - return -ENOMEM; - - pdata = dev_get_platdata(&pdev->dev); - if (!pdata) { - if (!np) - return -ENXIO; - ret = msm_otg_read_dt(pdev, motg); - if (ret) - return ret; - } - - /* - * NOTE: The PHYs can be multiplexed between the chipidea controller - * and the dwc3 controller, using a single bit. It is important that - * the dwc3 driver does not set this bit in an incompatible way. - */ - if (motg->phy_number) { - phy_select = devm_ioremap_nocache(&pdev->dev, USB2_PHY_SEL, 4); - if (!phy_select) - return -ENOMEM; - - /* Enable second PHY with the OTG port */ - writel(0x1, phy_select); - } - - dev_info(&pdev->dev, "OTG regs = %p\n", motg->regs); - - motg->irq = platform_get_irq(pdev, 0); - if (motg->irq < 0) { - dev_err(&pdev->dev, "platform_get_irq failed\n"); - ret = motg->irq; - return motg->irq; - } - - motg->supplies[0].supply = "vddcx"; - motg->supplies[1].supply = "v3p3"; - motg->supplies[2].supply = "v1p8"; - - ret = devm_regulator_bulk_get(motg->phy.dev, ARRAY_SIZE(motg->supplies), - motg->supplies); - if (ret) - return ret; - - motg->vddcx = motg->supplies[0].consumer; - motg->v3p3 = motg->supplies[1].consumer; - motg->v1p8 = motg->supplies[2].consumer; - - clk_set_rate(motg->clk, 60000000); - - clk_prepare_enable(motg->clk); - clk_prepare_enable(motg->pclk); - - if (!IS_ERR(motg->core_clk)) - clk_prepare_enable(motg->core_clk); - - ret = msm_hsusb_init_vddcx(motg, 1); - if (ret) { - dev_err(&pdev->dev, "hsusb vddcx configuration failed\n"); - goto disable_clks; - } - - ret = msm_hsusb_ldo_init(motg, 1); - if (ret) { - dev_err(&pdev->dev, "hsusb vreg configuration failed\n"); - goto disable_vddcx; - } - ret = msm_hsusb_ldo_set_mode(motg, 1); - if (ret) { - dev_err(&pdev->dev, "hsusb vreg enable failed\n"); - goto disable_ldo; - } - - writel(0, USB_USBINTR); - writel(0, USB_OTGSC); - - INIT_WORK(&motg->sm_work, msm_otg_sm_work); - INIT_DELAYED_WORK(&motg->chg_work, msm_chg_detect_work); - ret = devm_request_irq(&pdev->dev, motg->irq, msm_otg_irq, IRQF_SHARED, - "msm_otg", motg); - if (ret) { - dev_err(&pdev->dev, "request irq failed\n"); - goto disable_ldo; - } - - phy->init = msm_phy_init; - phy->notify_disconnect = msm_phy_notify_disconnect; - phy->type = USB_PHY_TYPE_USB2; - phy->vbus_nb.notifier_call = msm_otg_vbus_notifier; - phy->id_nb.notifier_call = msm_otg_id_notifier; - - phy->io_ops = &msm_otg_io_ops; - - phy->otg->usb_phy = &motg->phy; - phy->otg->set_host = msm_otg_set_host; - phy->otg->set_peripheral = msm_otg_set_peripheral; - - msm_usb_reset(phy); - - ret = usb_add_phy_dev(&motg->phy); - if (ret) { - dev_err(&pdev->dev, "usb_add_phy failed\n"); - goto disable_ldo; - } - - ret = extcon_get_state(phy->edev, EXTCON_USB); - if (ret) - set_bit(B_SESS_VLD, &motg->inputs); - else - clear_bit(B_SESS_VLD, &motg->inputs); - - ret = extcon_get_state(phy->id_edev, EXTCON_USB_HOST); - if (ret) - clear_bit(ID, &motg->inputs); - else - set_bit(ID, &motg->inputs); - - platform_set_drvdata(pdev, motg); - device_init_wakeup(&pdev->dev, 1); - - if (motg->pdata->mode == USB_DR_MODE_OTG && - motg->pdata->otg_control == OTG_USER_CONTROL) { - ret = msm_otg_debugfs_init(motg); - if (ret) - dev_dbg(&pdev->dev, "Can not create mode change file\n"); - } - - if (test_bit(B_SESS_VLD, &motg->inputs)) { - /* Switch D+/D- lines to Device connector */ - gpiod_set_value_cansleep(motg->switch_gpio, 0); - } else { - /* Switch D+/D- lines to Hub */ - gpiod_set_value_cansleep(motg->switch_gpio, 1); - } - - motg->reboot.notifier_call = msm_otg_reboot_notify; - register_reboot_notifier(&motg->reboot); - - pm_runtime_set_active(&pdev->dev); - pm_runtime_enable(&pdev->dev); - - return 0; - -disable_ldo: - msm_hsusb_ldo_init(motg, 0); -disable_vddcx: - msm_hsusb_init_vddcx(motg, 0); -disable_clks: - clk_disable_unprepare(motg->pclk); - clk_disable_unprepare(motg->clk); - if (!IS_ERR(motg->core_clk)) - clk_disable_unprepare(motg->core_clk); - - return ret; -} - -static int msm_otg_remove(struct platform_device *pdev) -{ - struct msm_otg *motg = platform_get_drvdata(pdev); - struct usb_phy *phy = &motg->phy; - int cnt = 0; - - if (phy->otg->host || phy->otg->gadget) - return -EBUSY; - - unregister_reboot_notifier(&motg->reboot); - - /* - * Ensure that D+/D- lines are routed to uB connector, so - * we could load bootloader/kernel at next reboot - */ - gpiod_set_value_cansleep(motg->switch_gpio, 0); - - msm_otg_debugfs_cleanup(); - cancel_delayed_work_sync(&motg->chg_work); - cancel_work_sync(&motg->sm_work); - - pm_runtime_resume(&pdev->dev); - - device_init_wakeup(&pdev->dev, 0); - pm_runtime_disable(&pdev->dev); - - usb_remove_phy(phy); - disable_irq(motg->irq); - - /* - * Put PHY in low power mode. - */ - ulpi_read(phy, 0x14); - ulpi_write(phy, 0x08, 0x09); - - writel(readl(USB_PORTSC) | PORTSC_PHCD, USB_PORTSC); - while (cnt < PHY_SUSPEND_TIMEOUT_USEC) { - if (readl(USB_PORTSC) & PORTSC_PHCD) - break; - udelay(1); - cnt++; - } - if (cnt >= PHY_SUSPEND_TIMEOUT_USEC) - dev_err(phy->dev, "Unable to suspend PHY\n"); - - clk_disable_unprepare(motg->pclk); - clk_disable_unprepare(motg->clk); - if (!IS_ERR(motg->core_clk)) - clk_disable_unprepare(motg->core_clk); - msm_hsusb_ldo_init(motg, 0); - - pm_runtime_set_suspended(&pdev->dev); - - return 0; -} - -#ifdef CONFIG_PM -static int msm_otg_runtime_idle(struct device *dev) -{ - struct msm_otg *motg = dev_get_drvdata(dev); - struct usb_otg *otg = motg->phy.otg; - - dev_dbg(dev, "OTG runtime idle\n"); - - /* - * It is observed some times that a spurious interrupt - * comes when PHY is put into LPM immediately after PHY reset. - * This 1 sec delay also prevents entering into LPM immediately - * after asynchronous interrupt. - */ - if (otg->state != OTG_STATE_UNDEFINED) - pm_schedule_suspend(dev, 1000); - - return -EAGAIN; -} - -static int msm_otg_runtime_suspend(struct device *dev) -{ - struct msm_otg *motg = dev_get_drvdata(dev); - - dev_dbg(dev, "OTG runtime suspend\n"); - return msm_otg_suspend(motg); -} - -static int msm_otg_runtime_resume(struct device *dev) -{ - struct msm_otg *motg = dev_get_drvdata(dev); - - dev_dbg(dev, "OTG runtime resume\n"); - return msm_otg_resume(motg); -} -#endif - -#ifdef CONFIG_PM_SLEEP -static int msm_otg_pm_suspend(struct device *dev) -{ - struct msm_otg *motg = dev_get_drvdata(dev); - - dev_dbg(dev, "OTG PM suspend\n"); - return msm_otg_suspend(motg); -} - -static int msm_otg_pm_resume(struct device *dev) -{ - struct msm_otg *motg = dev_get_drvdata(dev); - int ret; - - dev_dbg(dev, "OTG PM resume\n"); - - ret = msm_otg_resume(motg); - if (ret) - return ret; - - /* - * Runtime PM Documentation recommends bringing the - * device to full powered state upon resume. - */ - pm_runtime_disable(dev); - pm_runtime_set_active(dev); - pm_runtime_enable(dev); - - return 0; -} -#endif - -static const struct dev_pm_ops msm_otg_dev_pm_ops = { - SET_SYSTEM_SLEEP_PM_OPS(msm_otg_pm_suspend, msm_otg_pm_resume) - SET_RUNTIME_PM_OPS(msm_otg_runtime_suspend, msm_otg_runtime_resume, - msm_otg_runtime_idle) -}; - -static struct platform_driver msm_otg_driver = { - .probe = msm_otg_probe, - .remove = msm_otg_remove, - .driver = { - .name = DRIVER_NAME, - .pm = &msm_otg_dev_pm_ops, - .of_match_table = msm_otg_dt_match, - }, -}; - -module_platform_driver(msm_otg_driver); - -MODULE_LICENSE("GPL v2"); -MODULE_DESCRIPTION("MSM USB transceiver driver"); -- 2.11.0 ^ permalink raw reply related [flat|nested] 13+ messages in thread
* [PATCH v2 2/3] usb: phy: remove phy-msm-usb.c @ 2017-10-26 13:48 ` Alex Elder 0 siblings, 0 replies; 13+ messages in thread From: Alex Elder @ 2017-10-26 13:48 UTC (permalink / raw) To: linux-arm-kernel No Qualcomm SoC requires the "phy-msm-usb.c" USB phy driver support any more, so remove the code. Suggested-by: Stephen Boyd <sboyd@codeaurora.org> Signed-off-by: Alex Elder <elder@linaro.org> Acked-by: Bjorn Andersson <bjorn.andersson@linaro.org> Acked-by: Andy Gross <andy.gross@linaro.org> --- v2: Update the Kconfig file so it no longer offers to build this code, as suggested by Manu Gautam. drivers/usb/phy/Kconfig | 15 - drivers/usb/phy/Makefile | 1 - drivers/usb/phy/phy-msm-usb.c | 2085 ----------------------------------------- 3 files changed, 2101 deletions(-) delete mode 100644 drivers/usb/phy/phy-msm-usb.c diff --git a/drivers/usb/phy/Kconfig b/drivers/usb/phy/Kconfig index aff702c0eb9f..f5775e5c9f52 100644 --- a/drivers/usb/phy/Kconfig +++ b/drivers/usb/phy/Kconfig @@ -137,21 +137,6 @@ config USB_ISP1301 To compile this driver as a module, choose M here: the module will be called phy-isp1301. -config USB_MSM_OTG - tristate "Qualcomm on-chip USB OTG controller support" - depends on (USB || USB_GADGET) && (ARCH_QCOM || COMPILE_TEST) - depends on USB_GADGET || !USB_GADGET # if USB_GADGET=m, this can't be 'y' - depends on RESET_CONTROLLER - select USB_PHY - help - Enable this to support the USB OTG transceiver on Qualcomm chips. It - handles PHY initialization, clock management, and workarounds - required after resetting the hardware and power management. - This driver is required even for peripheral only or host only - mode configurations. - This driver is not supported on boards like trout which - has an external PHY. - config USB_QCOM_8X16_PHY tristate "Qualcomm APQ8016/MSM8916 on-chip USB PHY controller support" depends on ARCH_QCOM || COMPILE_TEST diff --git a/drivers/usb/phy/Makefile b/drivers/usb/phy/Makefile index e7c9ca8cafb0..61013f38abbe 100644 --- a/drivers/usb/phy/Makefile +++ b/drivers/usb/phy/Makefile @@ -18,7 +18,6 @@ obj-$(CONFIG_TWL6030_USB) += phy-twl6030-usb.o obj-$(CONFIG_USB_EHCI_TEGRA) += phy-tegra-usb.o obj-$(CONFIG_USB_GPIO_VBUS) += phy-gpio-vbus-usb.o obj-$(CONFIG_USB_ISP1301) += phy-isp1301.o -obj-$(CONFIG_USB_MSM_OTG) += phy-msm-usb.o obj-$(CONFIG_USB_QCOM_8X16_PHY) += phy-qcom-8x16-usb.o obj-$(CONFIG_USB_MV_OTG) += phy-mv-usb.o obj-$(CONFIG_USB_MXS_PHY) += phy-mxs-usb.o diff --git a/drivers/usb/phy/phy-msm-usb.c b/drivers/usb/phy/phy-msm-usb.c deleted file mode 100644 index 3d0dd2f97415..000000000000 --- a/drivers/usb/phy/phy-msm-usb.c +++ /dev/null @@ -1,2085 +0,0 @@ -/* Copyright (c) 2009-2011, Code Aurora Forum. All rights reserved. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 and - * only version 2 as published by the Free Software Foundation. - * - * 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. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA - * 02110-1301, USA. - * - */ - -#include <linux/module.h> -#include <linux/device.h> -#include <linux/extcon.h> -#include <linux/gpio/consumer.h> -#include <linux/platform_device.h> -#include <linux/clk.h> -#include <linux/slab.h> -#include <linux/interrupt.h> -#include <linux/err.h> -#include <linux/delay.h> -#include <linux/io.h> -#include <linux/ioport.h> -#include <linux/uaccess.h> -#include <linux/debugfs.h> -#include <linux/seq_file.h> -#include <linux/pm_runtime.h> -#include <linux/of.h> -#include <linux/of_device.h> -#include <linux/reboot.h> -#include <linux/reset.h> -#include <linux/types.h> -#include <linux/usb/otg.h> - -#include <linux/usb.h> -#include <linux/usb/otg.h> -#include <linux/usb/of.h> -#include <linux/usb/ulpi.h> -#include <linux/usb/gadget.h> -#include <linux/usb/hcd.h> -#include <linux/usb/msm_hsusb_hw.h> -#include <linux/regulator/consumer.h> - -/** - * OTG control - * - * OTG_NO_CONTROL Id/VBUS notifications not required. Useful in host - * only configuration. - * OTG_PHY_CONTROL Id/VBUS notifications comes form USB PHY. - * OTG_PMIC_CONTROL Id/VBUS notifications comes from PMIC hardware. - * OTG_USER_CONTROL Id/VBUS notifcations comes from User via sysfs. - * - */ -enum otg_control_type { - OTG_NO_CONTROL = 0, - OTG_PHY_CONTROL, - OTG_PMIC_CONTROL, - OTG_USER_CONTROL, -}; - -/** - * PHY used in - * - * INVALID_PHY Unsupported PHY - * CI_45NM_INTEGRATED_PHY Chipidea 45nm integrated PHY - * SNPS_28NM_INTEGRATED_PHY Synopsis 28nm integrated PHY - * - */ -enum msm_usb_phy_type { - INVALID_PHY = 0, - CI_45NM_INTEGRATED_PHY, - SNPS_28NM_INTEGRATED_PHY, -}; - -#define IDEV_CHG_MAX 1500 -#define IUNIT 100 - -/** - * Different states involved in USB charger detection. - * - * USB_CHG_STATE_UNDEFINED USB charger is not connected or detection - * process is not yet started. - * USB_CHG_STATE_WAIT_FOR_DCD Waiting for Data pins contact. - * USB_CHG_STATE_DCD_DONE Data pin contact is detected. - * USB_CHG_STATE_PRIMARY_DONE Primary detection is completed (Detects - * between SDP and DCP/CDP). - * USB_CHG_STATE_SECONDARY_DONE Secondary detection is completed (Detects - * between DCP and CDP). - * USB_CHG_STATE_DETECTED USB charger type is determined. - * - */ -enum usb_chg_state { - USB_CHG_STATE_UNDEFINED = 0, - USB_CHG_STATE_WAIT_FOR_DCD, - USB_CHG_STATE_DCD_DONE, - USB_CHG_STATE_PRIMARY_DONE, - USB_CHG_STATE_SECONDARY_DONE, - USB_CHG_STATE_DETECTED, -}; - -/** - * USB charger types - * - * USB_INVALID_CHARGER Invalid USB charger. - * USB_SDP_CHARGER Standard downstream port. Refers to a downstream port - * on USB2.0 compliant host/hub. - * USB_DCP_CHARGER Dedicated charger port (AC charger/ Wall charger). - * USB_CDP_CHARGER Charging downstream port. Enumeration can happen and - * IDEV_CHG_MAX can be drawn irrespective of USB state. - * - */ -enum usb_chg_type { - USB_INVALID_CHARGER = 0, - USB_SDP_CHARGER, - USB_DCP_CHARGER, - USB_CDP_CHARGER, -}; - -/** - * struct msm_otg_platform_data - platform device data - * for msm_otg driver. - * @phy_init_seq: PHY configuration sequence values. Value of -1 is reserved as - * "do not overwrite default vaule at this address". - * @phy_init_sz: PHY configuration sequence size. - * @vbus_power: VBUS power on/off routine. - * @power_budget: VBUS power budget in mA (0 will be treated as 500mA). - * @mode: Supported mode (OTG/peripheral/host). - * @otg_control: OTG switch controlled by user/Id pin - */ -struct msm_otg_platform_data { - int *phy_init_seq; - int phy_init_sz; - void (*vbus_power)(bool on); - unsigned power_budget; - enum usb_dr_mode mode; - enum otg_control_type otg_control; - enum msm_usb_phy_type phy_type; - void (*setup_gpio)(enum usb_otg_state state); -}; - -/** - * struct msm_otg: OTG driver data. Shared by HCD and DCD. - * @otg: USB OTG Transceiver structure. - * @pdata: otg device platform data. - * @irq: IRQ number assigned for HSUSB controller. - * @clk: clock struct of usb_hs_clk. - * @pclk: clock struct of usb_hs_pclk. - * @core_clk: clock struct of usb_hs_core_clk. - * @regs: ioremapped register base address. - * @inputs: OTG state machine inputs(Id, SessValid etc). - * @sm_work: OTG state machine work. - * @in_lpm: indicates low power mode (LPM) state. - * @async_int: Async interrupt arrived. - * @cur_power: The amount of mA available from downstream port. - * @chg_work: Charger detection work. - * @chg_state: The state of charger detection process. - * @chg_type: The type of charger attached. - * @dcd_retires: The retry count used to track Data contact - * detection process. - * @manual_pullup: true if VBUS is not routed to USB controller/phy - * and controller driver therefore enables pull-up explicitly before - * starting controller using usbcmd run/stop bit. - * @vbus: VBUS signal state trakining, using extcon framework - * @id: ID signal state trakining, using extcon framework - * @switch_gpio: Descriptor for GPIO used to control external Dual - * SPDT USB Switch. - * @reboot: Used to inform the driver to route USB D+/D- line to Device - * connector - */ -struct msm_otg { - struct usb_phy phy; - struct msm_otg_platform_data *pdata; - int irq; - struct clk *clk; - struct clk *pclk; - struct clk *core_clk; - void __iomem *regs; -#define ID 0 -#define B_SESS_VLD 1 - unsigned long inputs; - struct work_struct sm_work; - atomic_t in_lpm; - int async_int; - unsigned cur_power; - int phy_number; - struct delayed_work chg_work; - enum usb_chg_state chg_state; - enum usb_chg_type chg_type; - u8 dcd_retries; - struct regulator *v3p3; - struct regulator *v1p8; - struct regulator *vddcx; - struct regulator_bulk_data supplies[3]; - - struct reset_control *phy_rst; - struct reset_control *link_rst; - int vdd_levels[3]; - - bool manual_pullup; - - struct gpio_desc *switch_gpio; - struct notifier_block reboot; -}; - -#define MSM_USB_BASE (motg->regs) -#define DRIVER_NAME "msm_otg" - -#define ULPI_IO_TIMEOUT_USEC (10 * 1000) -#define LINK_RESET_TIMEOUT_USEC (250 * 1000) - -#define USB_PHY_3P3_VOL_MIN 3050000 /* uV */ -#define USB_PHY_3P3_VOL_MAX 3300000 /* uV */ -#define USB_PHY_3P3_HPM_LOAD 50000 /* uA */ -#define USB_PHY_3P3_LPM_LOAD 4000 /* uA */ - -#define USB_PHY_1P8_VOL_MIN 1800000 /* uV */ -#define USB_PHY_1P8_VOL_MAX 1800000 /* uV */ -#define USB_PHY_1P8_HPM_LOAD 50000 /* uA */ -#define USB_PHY_1P8_LPM_LOAD 4000 /* uA */ - -#define USB_PHY_VDD_DIG_VOL_MIN 1000000 /* uV */ -#define USB_PHY_VDD_DIG_VOL_MAX 1320000 /* uV */ -#define USB_PHY_SUSP_DIG_VOL 500000 /* uV */ - -enum vdd_levels { - VDD_LEVEL_NONE = 0, - VDD_LEVEL_MIN, - VDD_LEVEL_MAX, -}; - -static int msm_hsusb_init_vddcx(struct msm_otg *motg, int init) -{ - int ret = 0; - - if (init) { - ret = regulator_set_voltage(motg->vddcx, - motg->vdd_levels[VDD_LEVEL_MIN], - motg->vdd_levels[VDD_LEVEL_MAX]); - if (ret) { - dev_err(motg->phy.dev, "Cannot set vddcx voltage\n"); - return ret; - } - - ret = regulator_enable(motg->vddcx); - if (ret) - dev_err(motg->phy.dev, "unable to enable hsusb vddcx\n"); - } else { - ret = regulator_set_voltage(motg->vddcx, 0, - motg->vdd_levels[VDD_LEVEL_MAX]); - if (ret) - dev_err(motg->phy.dev, "Cannot set vddcx voltage\n"); - ret = regulator_disable(motg->vddcx); - if (ret) - dev_err(motg->phy.dev, "unable to disable hsusb vddcx\n"); - } - - return ret; -} - -static int msm_hsusb_ldo_init(struct msm_otg *motg, int init) -{ - int rc = 0; - - if (init) { - rc = regulator_set_voltage(motg->v3p3, USB_PHY_3P3_VOL_MIN, - USB_PHY_3P3_VOL_MAX); - if (rc) { - dev_err(motg->phy.dev, "Cannot set v3p3 voltage\n"); - goto exit; - } - rc = regulator_enable(motg->v3p3); - if (rc) { - dev_err(motg->phy.dev, "unable to enable the hsusb 3p3\n"); - goto exit; - } - rc = regulator_set_voltage(motg->v1p8, USB_PHY_1P8_VOL_MIN, - USB_PHY_1P8_VOL_MAX); - if (rc) { - dev_err(motg->phy.dev, "Cannot set v1p8 voltage\n"); - goto disable_3p3; - } - rc = regulator_enable(motg->v1p8); - if (rc) { - dev_err(motg->phy.dev, "unable to enable the hsusb 1p8\n"); - goto disable_3p3; - } - - return 0; - } - - regulator_disable(motg->v1p8); -disable_3p3: - regulator_disable(motg->v3p3); -exit: - return rc; -} - -static int msm_hsusb_ldo_set_mode(struct msm_otg *motg, int on) -{ - int ret = 0; - - if (on) { - ret = regulator_set_load(motg->v1p8, USB_PHY_1P8_HPM_LOAD); - if (ret < 0) { - pr_err("Could not set HPM for v1p8\n"); - return ret; - } - ret = regulator_set_load(motg->v3p3, USB_PHY_3P3_HPM_LOAD); - if (ret < 0) { - pr_err("Could not set HPM for v3p3\n"); - regulator_set_load(motg->v1p8, USB_PHY_1P8_LPM_LOAD); - return ret; - } - } else { - ret = regulator_set_load(motg->v1p8, USB_PHY_1P8_LPM_LOAD); - if (ret < 0) - pr_err("Could not set LPM for v1p8\n"); - ret = regulator_set_load(motg->v3p3, USB_PHY_3P3_LPM_LOAD); - if (ret < 0) - pr_err("Could not set LPM for v3p3\n"); - } - - pr_debug("reg (%s)\n", on ? "HPM" : "LPM"); - return ret < 0 ? ret : 0; -} - -static int ulpi_read(struct usb_phy *phy, u32 reg) -{ - struct msm_otg *motg = container_of(phy, struct msm_otg, phy); - int cnt = 0; - - /* initiate read operation */ - writel(ULPI_RUN | ULPI_READ | ULPI_ADDR(reg), - USB_ULPI_VIEWPORT); - - /* wait for completion */ - while (cnt < ULPI_IO_TIMEOUT_USEC) { - if (!(readl(USB_ULPI_VIEWPORT) & ULPI_RUN)) - break; - udelay(1); - cnt++; - } - - if (cnt >= ULPI_IO_TIMEOUT_USEC) { - dev_err(phy->dev, "ulpi_read: timeout %08x\n", - readl(USB_ULPI_VIEWPORT)); - return -ETIMEDOUT; - } - return ULPI_DATA_READ(readl(USB_ULPI_VIEWPORT)); -} - -static int ulpi_write(struct usb_phy *phy, u32 val, u32 reg) -{ - struct msm_otg *motg = container_of(phy, struct msm_otg, phy); - int cnt = 0; - - /* initiate write operation */ - writel(ULPI_RUN | ULPI_WRITE | - ULPI_ADDR(reg) | ULPI_DATA(val), - USB_ULPI_VIEWPORT); - - /* wait for completion */ - while (cnt < ULPI_IO_TIMEOUT_USEC) { - if (!(readl(USB_ULPI_VIEWPORT) & ULPI_RUN)) - break; - udelay(1); - cnt++; - } - - if (cnt >= ULPI_IO_TIMEOUT_USEC) { - dev_err(phy->dev, "ulpi_write: timeout\n"); - return -ETIMEDOUT; - } - return 0; -} - -static struct usb_phy_io_ops msm_otg_io_ops = { - .read = ulpi_read, - .write = ulpi_write, -}; - -static void ulpi_init(struct msm_otg *motg) -{ - struct msm_otg_platform_data *pdata = motg->pdata; - int *seq = pdata->phy_init_seq, idx; - u32 addr = ULPI_EXT_VENDOR_SPECIFIC; - - for (idx = 0; idx < pdata->phy_init_sz; idx++) { - if (seq[idx] == -1) - continue; - - dev_vdbg(motg->phy.dev, "ulpi: write 0x%02x to 0x%02x\n", - seq[idx], addr + idx); - ulpi_write(&motg->phy, seq[idx], addr + idx); - } -} - -static int msm_phy_notify_disconnect(struct usb_phy *phy, - enum usb_device_speed speed) -{ - struct msm_otg *motg = container_of(phy, struct msm_otg, phy); - int val; - - if (motg->manual_pullup) { - val = ULPI_MISC_A_VBUSVLDEXT | ULPI_MISC_A_VBUSVLDEXTSEL; - usb_phy_io_write(phy, val, ULPI_CLR(ULPI_MISC_A)); - } - - /* - * Put the transceiver in non-driving mode. Otherwise host - * may not detect soft-disconnection. - */ - val = ulpi_read(phy, ULPI_FUNC_CTRL); - val &= ~ULPI_FUNC_CTRL_OPMODE_MASK; - val |= ULPI_FUNC_CTRL_OPMODE_NONDRIVING; - ulpi_write(phy, val, ULPI_FUNC_CTRL); - - return 0; -} - -static int msm_otg_link_clk_reset(struct msm_otg *motg, bool assert) -{ - int ret; - - if (assert) - ret = reset_control_assert(motg->link_rst); - else - ret = reset_control_deassert(motg->link_rst); - - if (ret) - dev_err(motg->phy.dev, "usb link clk reset %s failed\n", - assert ? "assert" : "deassert"); - - return ret; -} - -static int msm_otg_phy_clk_reset(struct msm_otg *motg) -{ - int ret = 0; - - if (motg->phy_rst) - ret = reset_control_reset(motg->phy_rst); - - if (ret) - dev_err(motg->phy.dev, "usb phy clk reset failed\n"); - - return ret; -} - -static int msm_link_reset(struct msm_otg *motg) -{ - u32 val; - int ret; - - ret = msm_otg_link_clk_reset(motg, 1); - if (ret) - return ret; - - /* wait for 1ms delay as suggested in HPG. */ - usleep_range(1000, 1200); - - ret = msm_otg_link_clk_reset(motg, 0); - if (ret) - return ret; - - if (motg->phy_number) - writel(readl(USB_PHY_CTRL2) | BIT(16), USB_PHY_CTRL2); - - /* put transceiver in serial mode as part of reset */ - val = readl(USB_PORTSC) & ~PORTSC_PTS_MASK; - writel(val | PORTSC_PTS_SERIAL, USB_PORTSC); - - return 0; -} - -static int msm_otg_reset(struct usb_phy *phy) -{ - struct msm_otg *motg = container_of(phy, struct msm_otg, phy); - int cnt = 0; - - writel(USBCMD_RESET, USB_USBCMD); - while (cnt < LINK_RESET_TIMEOUT_USEC) { - if (!(readl(USB_USBCMD) & USBCMD_RESET)) - break; - udelay(1); - cnt++; - } - if (cnt >= LINK_RESET_TIMEOUT_USEC) - return -ETIMEDOUT; - - /* select ULPI phy and clear other status/control bits in PORTSC */ - writel(PORTSC_PTS_ULPI, USB_PORTSC); - - writel(0x0, USB_AHBBURST); - writel(0x08, USB_AHBMODE); - - if (motg->phy_number) - writel(readl(USB_PHY_CTRL2) | BIT(16), USB_PHY_CTRL2); - return 0; -} - -static void msm_phy_reset(struct msm_otg *motg) -{ - void __iomem *addr; - - if (motg->pdata->phy_type != SNPS_28NM_INTEGRATED_PHY) { - msm_otg_phy_clk_reset(motg); - return; - } - - addr = USB_PHY_CTRL; - if (motg->phy_number) - addr = USB_PHY_CTRL2; - - /* Assert USB PHY_POR */ - writel(readl(addr) | PHY_POR_ASSERT, addr); - - /* - * wait for minimum 10 microseconds as suggested in HPG. - * Use a slightly larger value since the exact value didn't - * work 100% of the time. - */ - udelay(12); - - /* Deassert USB PHY_POR */ - writel(readl(addr) & ~PHY_POR_ASSERT, addr); -} - -static int msm_usb_reset(struct usb_phy *phy) -{ - struct msm_otg *motg = container_of(phy, struct msm_otg, phy); - int ret; - - if (!IS_ERR(motg->core_clk)) - clk_prepare_enable(motg->core_clk); - - ret = msm_link_reset(motg); - if (ret) { - dev_err(phy->dev, "phy_reset failed\n"); - return ret; - } - - ret = msm_otg_reset(&motg->phy); - if (ret) { - dev_err(phy->dev, "link reset failed\n"); - return ret; - } - - msleep(100); - - /* Reset USB PHY after performing USB Link RESET */ - msm_phy_reset(motg); - - if (!IS_ERR(motg->core_clk)) - clk_disable_unprepare(motg->core_clk); - - return 0; -} - -static int msm_phy_init(struct usb_phy *phy) -{ - struct msm_otg *motg = container_of(phy, struct msm_otg, phy); - struct msm_otg_platform_data *pdata = motg->pdata; - u32 val, ulpi_val = 0; - - /* Program USB PHY Override registers. */ - ulpi_init(motg); - - /* - * It is recommended in HPG to reset USB PHY after programming - * USB PHY Override registers. - */ - msm_phy_reset(motg); - - if (pdata->otg_control == OTG_PHY_CONTROL) { - val = readl(USB_OTGSC); - if (pdata->mode == USB_DR_MODE_OTG) { - ulpi_val = ULPI_INT_IDGRD | ULPI_INT_SESS_VALID; - val |= OTGSC_IDIE | OTGSC_BSVIE; - } else if (pdata->mode == USB_DR_MODE_PERIPHERAL) { - ulpi_val = ULPI_INT_SESS_VALID; - val |= OTGSC_BSVIE; - } - writel(val, USB_OTGSC); - ulpi_write(phy, ulpi_val, ULPI_USB_INT_EN_RISE); - ulpi_write(phy, ulpi_val, ULPI_USB_INT_EN_FALL); - } - - if (motg->manual_pullup) { - val = ULPI_MISC_A_VBUSVLDEXTSEL | ULPI_MISC_A_VBUSVLDEXT; - ulpi_write(phy, val, ULPI_SET(ULPI_MISC_A)); - - val = readl(USB_GENCONFIG_2); - val |= GENCONFIG_2_SESS_VLD_CTRL_EN; - writel(val, USB_GENCONFIG_2); - - val = readl(USB_USBCMD); - val |= USBCMD_SESS_VLD_CTRL; - writel(val, USB_USBCMD); - - val = ulpi_read(phy, ULPI_FUNC_CTRL); - val &= ~ULPI_FUNC_CTRL_OPMODE_MASK; - val |= ULPI_FUNC_CTRL_OPMODE_NORMAL; - ulpi_write(phy, val, ULPI_FUNC_CTRL); - } - - if (motg->phy_number) - writel(readl(USB_PHY_CTRL2) | BIT(16), USB_PHY_CTRL2); - - return 0; -} - -#define PHY_SUSPEND_TIMEOUT_USEC (500 * 1000) -#define PHY_RESUME_TIMEOUT_USEC (100 * 1000) - -#ifdef CONFIG_PM - -static int msm_hsusb_config_vddcx(struct msm_otg *motg, int high) -{ - int max_vol = motg->vdd_levels[VDD_LEVEL_MAX]; - int min_vol; - int ret; - - if (high) - min_vol = motg->vdd_levels[VDD_LEVEL_MIN]; - else - min_vol = motg->vdd_levels[VDD_LEVEL_NONE]; - - ret = regulator_set_voltage(motg->vddcx, min_vol, max_vol); - if (ret) { - pr_err("Cannot set vddcx voltage\n"); - return ret; - } - - pr_debug("%s: min_vol:%d max_vol:%d\n", __func__, min_vol, max_vol); - - return ret; -} - -static int msm_otg_suspend(struct msm_otg *motg) -{ - struct usb_phy *phy = &motg->phy; - struct usb_bus *bus = phy->otg->host; - struct msm_otg_platform_data *pdata = motg->pdata; - void __iomem *addr; - int cnt = 0; - - if (atomic_read(&motg->in_lpm)) - return 0; - - disable_irq(motg->irq); - /* - * Chipidea 45-nm PHY suspend sequence: - * - * Interrupt Latch Register auto-clear feature is not present - * in all PHY versions. Latch register is clear on read type. - * Clear latch register to avoid spurious wakeup from - * low power mode (LPM). - * - * PHY comparators are disabled when PHY enters into low power - * mode (LPM). Keep PHY comparators ON in LPM only when we expect - * VBUS/Id notifications from USB PHY. Otherwise turn off USB - * PHY comparators. This save significant amount of power. - * - * PLL is not turned off when PHY enters into low power mode (LPM). - * Disable PLL for maximum power savings. - */ - - if (motg->pdata->phy_type == CI_45NM_INTEGRATED_PHY) { - ulpi_read(phy, 0x14); - if (pdata->otg_control == OTG_PHY_CONTROL) - ulpi_write(phy, 0x01, 0x30); - ulpi_write(phy, 0x08, 0x09); - } - - /* - * PHY may take some time or even fail to enter into low power - * mode (LPM). Hence poll for 500 msec and reset the PHY and link - * in failure case. - */ - writel(readl(USB_PORTSC) | PORTSC_PHCD, USB_PORTSC); - while (cnt < PHY_SUSPEND_TIMEOUT_USEC) { - if (readl(USB_PORTSC) & PORTSC_PHCD) - break; - udelay(1); - cnt++; - } - - if (cnt >= PHY_SUSPEND_TIMEOUT_USEC) { - dev_err(phy->dev, "Unable to suspend PHY\n"); - msm_otg_reset(phy); - enable_irq(motg->irq); - return -ETIMEDOUT; - } - - /* - * PHY has capability to generate interrupt asynchronously in low - * power mode (LPM). This interrupt is level triggered. So USB IRQ - * line must be disabled till async interrupt enable bit is cleared - * in USBCMD register. Assert STP (ULPI interface STOP signal) to - * block data communication from PHY. - */ - writel(readl(USB_USBCMD) | ASYNC_INTR_CTRL | ULPI_STP_CTRL, USB_USBCMD); - - addr = USB_PHY_CTRL; - if (motg->phy_number) - addr = USB_PHY_CTRL2; - - if (motg->pdata->phy_type == SNPS_28NM_INTEGRATED_PHY && - motg->pdata->otg_control == OTG_PMIC_CONTROL) - writel(readl(addr) | PHY_RETEN, addr); - - clk_disable_unprepare(motg->pclk); - clk_disable_unprepare(motg->clk); - if (!IS_ERR(motg->core_clk)) - clk_disable_unprepare(motg->core_clk); - - if (motg->pdata->phy_type == SNPS_28NM_INTEGRATED_PHY && - motg->pdata->otg_control == OTG_PMIC_CONTROL) { - msm_hsusb_ldo_set_mode(motg, 0); - msm_hsusb_config_vddcx(motg, 0); - } - - if (device_may_wakeup(phy->dev)) - enable_irq_wake(motg->irq); - if (bus) - clear_bit(HCD_FLAG_HW_ACCESSIBLE, &(bus_to_hcd(bus))->flags); - - atomic_set(&motg->in_lpm, 1); - enable_irq(motg->irq); - - dev_info(phy->dev, "USB in low power mode\n"); - - return 0; -} - -static int msm_otg_resume(struct msm_otg *motg) -{ - struct usb_phy *phy = &motg->phy; - struct usb_bus *bus = phy->otg->host; - void __iomem *addr; - int cnt = 0; - unsigned temp; - - if (!atomic_read(&motg->in_lpm)) - return 0; - - clk_prepare_enable(motg->pclk); - clk_prepare_enable(motg->clk); - if (!IS_ERR(motg->core_clk)) - clk_prepare_enable(motg->core_clk); - - if (motg->pdata->phy_type == SNPS_28NM_INTEGRATED_PHY && - motg->pdata->otg_control == OTG_PMIC_CONTROL) { - - addr = USB_PHY_CTRL; - if (motg->phy_number) - addr = USB_PHY_CTRL2; - - msm_hsusb_ldo_set_mode(motg, 1); - msm_hsusb_config_vddcx(motg, 1); - writel(readl(addr) & ~PHY_RETEN, addr); - } - - temp = readl(USB_USBCMD); - temp &= ~ASYNC_INTR_CTRL; - temp &= ~ULPI_STP_CTRL; - writel(temp, USB_USBCMD); - - /* - * PHY comes out of low power mode (LPM) in case of wakeup - * from asynchronous interrupt. - */ - if (!(readl(USB_PORTSC) & PORTSC_PHCD)) - goto skip_phy_resume; - - writel(readl(USB_PORTSC) & ~PORTSC_PHCD, USB_PORTSC); - while (cnt < PHY_RESUME_TIMEOUT_USEC) { - if (!(readl(USB_PORTSC) & PORTSC_PHCD)) - break; - udelay(1); - cnt++; - } - - if (cnt >= PHY_RESUME_TIMEOUT_USEC) { - /* - * This is a fatal error. Reset the link and - * PHY. USB state can not be restored. Re-insertion - * of USB cable is the only way to get USB working. - */ - dev_err(phy->dev, "Unable to resume USB. Re-plugin the cable\n"); - msm_otg_reset(phy); - } - -skip_phy_resume: - if (device_may_wakeup(phy->dev)) - disable_irq_wake(motg->irq); - if (bus) - set_bit(HCD_FLAG_HW_ACCESSIBLE, &(bus_to_hcd(bus))->flags); - - atomic_set(&motg->in_lpm, 0); - - if (motg->async_int) { - motg->async_int = 0; - pm_runtime_put(phy->dev); - enable_irq(motg->irq); - } - - dev_info(phy->dev, "USB exited from low power mode\n"); - - return 0; -} -#endif - -static void msm_otg_notify_charger(struct msm_otg *motg, unsigned mA) -{ - if (motg->cur_power == mA) - return; - - /* TODO: Notify PMIC about available current */ - dev_info(motg->phy.dev, "Avail curr from USB = %u\n", mA); - motg->cur_power = mA; -} - -static void msm_otg_start_host(struct usb_phy *phy, int on) -{ - struct msm_otg *motg = container_of(phy, struct msm_otg, phy); - struct msm_otg_platform_data *pdata = motg->pdata; - struct usb_hcd *hcd; - - if (!phy->otg->host) - return; - - hcd = bus_to_hcd(phy->otg->host); - - if (on) { - dev_dbg(phy->dev, "host on\n"); - - if (pdata->vbus_power) - pdata->vbus_power(1); - /* - * Some boards have a switch cotrolled by gpio - * to enable/disable internal HUB. Enable internal - * HUB before kicking the host. - */ - if (pdata->setup_gpio) - pdata->setup_gpio(OTG_STATE_A_HOST); -#ifdef CONFIG_USB - usb_add_hcd(hcd, hcd->irq, IRQF_SHARED); - device_wakeup_enable(hcd->self.controller); -#endif - } else { - dev_dbg(phy->dev, "host off\n"); - -#ifdef CONFIG_USB - usb_remove_hcd(hcd); -#endif - if (pdata->setup_gpio) - pdata->setup_gpio(OTG_STATE_UNDEFINED); - if (pdata->vbus_power) - pdata->vbus_power(0); - } -} - -static int msm_otg_set_host(struct usb_otg *otg, struct usb_bus *host) -{ - struct msm_otg *motg = container_of(otg->usb_phy, struct msm_otg, phy); - struct usb_hcd *hcd; - - /* - * Fail host registration if this board can support - * only peripheral configuration. - */ - if (motg->pdata->mode == USB_DR_MODE_PERIPHERAL) { - dev_info(otg->usb_phy->dev, "Host mode is not supported\n"); - return -ENODEV; - } - - if (!host) { - if (otg->state == OTG_STATE_A_HOST) { - pm_runtime_get_sync(otg->usb_phy->dev); - msm_otg_start_host(otg->usb_phy, 0); - otg->host = NULL; - otg->state = OTG_STATE_UNDEFINED; - schedule_work(&motg->sm_work); - } else { - otg->host = NULL; - } - - return 0; - } - - hcd = bus_to_hcd(host); - hcd->power_budget = motg->pdata->power_budget; - - otg->host = host; - dev_dbg(otg->usb_phy->dev, "host driver registered w/ tranceiver\n"); - - pm_runtime_get_sync(otg->usb_phy->dev); - schedule_work(&motg->sm_work); - - return 0; -} - -static void msm_otg_start_peripheral(struct usb_phy *phy, int on) -{ - struct msm_otg *motg = container_of(phy, struct msm_otg, phy); - struct msm_otg_platform_data *pdata = motg->pdata; - - if (!phy->otg->gadget) - return; - - if (on) { - dev_dbg(phy->dev, "gadget on\n"); - /* - * Some boards have a switch cotrolled by gpio - * to enable/disable internal HUB. Disable internal - * HUB before kicking the gadget. - */ - if (pdata->setup_gpio) - pdata->setup_gpio(OTG_STATE_B_PERIPHERAL); - usb_gadget_vbus_connect(phy->otg->gadget); - } else { - dev_dbg(phy->dev, "gadget off\n"); - usb_gadget_vbus_disconnect(phy->otg->gadget); - if (pdata->setup_gpio) - pdata->setup_gpio(OTG_STATE_UNDEFINED); - } - -} - -static int msm_otg_set_peripheral(struct usb_otg *otg, - struct usb_gadget *gadget) -{ - struct msm_otg *motg = container_of(otg->usb_phy, struct msm_otg, phy); - - /* - * Fail peripheral registration if this board can support - * only host configuration. - */ - if (motg->pdata->mode == USB_DR_MODE_HOST) { - dev_info(otg->usb_phy->dev, "Peripheral mode is not supported\n"); - return -ENODEV; - } - - if (!gadget) { - if (otg->state == OTG_STATE_B_PERIPHERAL) { - pm_runtime_get_sync(otg->usb_phy->dev); - msm_otg_start_peripheral(otg->usb_phy, 0); - otg->gadget = NULL; - otg->state = OTG_STATE_UNDEFINED; - schedule_work(&motg->sm_work); - } else { - otg->gadget = NULL; - } - - return 0; - } - otg->gadget = gadget; - dev_dbg(otg->usb_phy->dev, - "peripheral driver registered w/ tranceiver\n"); - - pm_runtime_get_sync(otg->usb_phy->dev); - schedule_work(&motg->sm_work); - - return 0; -} - -static bool msm_chg_check_secondary_det(struct msm_otg *motg) -{ - struct usb_phy *phy = &motg->phy; - u32 chg_det; - bool ret = false; - - switch (motg->pdata->phy_type) { - case CI_45NM_INTEGRATED_PHY: - chg_det = ulpi_read(phy, 0x34); - ret = chg_det & (1 << 4); - break; - case SNPS_28NM_INTEGRATED_PHY: - chg_det = ulpi_read(phy, 0x87); - ret = chg_det & 1; - break; - default: - break; - } - return ret; -} - -static void msm_chg_enable_secondary_det(struct msm_otg *motg) -{ - struct usb_phy *phy = &motg->phy; - u32 chg_det; - - switch (motg->pdata->phy_type) { - case CI_45NM_INTEGRATED_PHY: - chg_det = ulpi_read(phy, 0x34); - /* Turn off charger block */ - chg_det |= ~(1 << 1); - ulpi_write(phy, chg_det, 0x34); - udelay(20); - /* control chg block via ULPI */ - chg_det &= ~(1 << 3); - ulpi_write(phy, chg_det, 0x34); - /* put it in host mode for enabling D- source */ - chg_det &= ~(1 << 2); - ulpi_write(phy, chg_det, 0x34); - /* Turn on chg detect block */ - chg_det &= ~(1 << 1); - ulpi_write(phy, chg_det, 0x34); - udelay(20); - /* enable chg detection */ - chg_det &= ~(1 << 0); - ulpi_write(phy, chg_det, 0x34); - break; - case SNPS_28NM_INTEGRATED_PHY: - /* - * Configure DM as current source, DP as current sink - * and enable battery charging comparators. - */ - ulpi_write(phy, 0x8, 0x85); - ulpi_write(phy, 0x2, 0x85); - ulpi_write(phy, 0x1, 0x85); - break; - default: - break; - } -} - -static bool msm_chg_check_primary_det(struct msm_otg *motg) -{ - struct usb_phy *phy = &motg->phy; - u32 chg_det; - bool ret = false; - - switch (motg->pdata->phy_type) { - case CI_45NM_INTEGRATED_PHY: - chg_det = ulpi_read(phy, 0x34); - ret = chg_det & (1 << 4); - break; - case SNPS_28NM_INTEGRATED_PHY: - chg_det = ulpi_read(phy, 0x87); - ret = chg_det & 1; - break; - default: - break; - } - return ret; -} - -static void msm_chg_enable_primary_det(struct msm_otg *motg) -{ - struct usb_phy *phy = &motg->phy; - u32 chg_det; - - switch (motg->pdata->phy_type) { - case CI_45NM_INTEGRATED_PHY: - chg_det = ulpi_read(phy, 0x34); - /* enable chg detection */ - chg_det &= ~(1 << 0); - ulpi_write(phy, chg_det, 0x34); - break; - case SNPS_28NM_INTEGRATED_PHY: - /* - * Configure DP as current source, DM as current sink - * and enable battery charging comparators. - */ - ulpi_write(phy, 0x2, 0x85); - ulpi_write(phy, 0x1, 0x85); - break; - default: - break; - } -} - -static bool msm_chg_check_dcd(struct msm_otg *motg) -{ - struct usb_phy *phy = &motg->phy; - u32 line_state; - bool ret = false; - - switch (motg->pdata->phy_type) { - case CI_45NM_INTEGRATED_PHY: - line_state = ulpi_read(phy, 0x15); - ret = !(line_state & 1); - break; - case SNPS_28NM_INTEGRATED_PHY: - line_state = ulpi_read(phy, 0x87); - ret = line_state & 2; - break; - default: - break; - } - return ret; -} - -static void msm_chg_disable_dcd(struct msm_otg *motg) -{ - struct usb_phy *phy = &motg->phy; - u32 chg_det; - - switch (motg->pdata->phy_type) { - case CI_45NM_INTEGRATED_PHY: - chg_det = ulpi_read(phy, 0x34); - chg_det &= ~(1 << 5); - ulpi_write(phy, chg_det, 0x34); - break; - case SNPS_28NM_INTEGRATED_PHY: - ulpi_write(phy, 0x10, 0x86); - break; - default: - break; - } -} - -static void msm_chg_enable_dcd(struct msm_otg *motg) -{ - struct usb_phy *phy = &motg->phy; - u32 chg_det; - - switch (motg->pdata->phy_type) { - case CI_45NM_INTEGRATED_PHY: - chg_det = ulpi_read(phy, 0x34); - /* Turn on D+ current source */ - chg_det |= (1 << 5); - ulpi_write(phy, chg_det, 0x34); - break; - case SNPS_28NM_INTEGRATED_PHY: - /* Data contact detection enable */ - ulpi_write(phy, 0x10, 0x85); - break; - default: - break; - } -} - -static void msm_chg_block_on(struct msm_otg *motg) -{ - struct usb_phy *phy = &motg->phy; - u32 func_ctrl, chg_det; - - /* put the controller in non-driving mode */ - func_ctrl = ulpi_read(phy, ULPI_FUNC_CTRL); - func_ctrl &= ~ULPI_FUNC_CTRL_OPMODE_MASK; - func_ctrl |= ULPI_FUNC_CTRL_OPMODE_NONDRIVING; - ulpi_write(phy, func_ctrl, ULPI_FUNC_CTRL); - - switch (motg->pdata->phy_type) { - case CI_45NM_INTEGRATED_PHY: - chg_det = ulpi_read(phy, 0x34); - /* control chg block via ULPI */ - chg_det &= ~(1 << 3); - ulpi_write(phy, chg_det, 0x34); - /* Turn on chg detect block */ - chg_det &= ~(1 << 1); - ulpi_write(phy, chg_det, 0x34); - udelay(20); - break; - case SNPS_28NM_INTEGRATED_PHY: - /* Clear charger detecting control bits */ - ulpi_write(phy, 0x3F, 0x86); - /* Clear alt interrupt latch and enable bits */ - ulpi_write(phy, 0x1F, 0x92); - ulpi_write(phy, 0x1F, 0x95); - udelay(100); - break; - default: - break; - } -} - -static void msm_chg_block_off(struct msm_otg *motg) -{ - struct usb_phy *phy = &motg->phy; - u32 func_ctrl, chg_det; - - switch (motg->pdata->phy_type) { - case CI_45NM_INTEGRATED_PHY: - chg_det = ulpi_read(phy, 0x34); - /* Turn off charger block */ - chg_det |= ~(1 << 1); - ulpi_write(phy, chg_det, 0x34); - break; - case SNPS_28NM_INTEGRATED_PHY: - /* Clear charger detecting control bits */ - ulpi_write(phy, 0x3F, 0x86); - /* Clear alt interrupt latch and enable bits */ - ulpi_write(phy, 0x1F, 0x92); - ulpi_write(phy, 0x1F, 0x95); - break; - default: - break; - } - - /* put the controller in normal mode */ - func_ctrl = ulpi_read(phy, ULPI_FUNC_CTRL); - func_ctrl &= ~ULPI_FUNC_CTRL_OPMODE_MASK; - func_ctrl |= ULPI_FUNC_CTRL_OPMODE_NORMAL; - ulpi_write(phy, func_ctrl, ULPI_FUNC_CTRL); -} - -#define MSM_CHG_DCD_POLL_TIME (100 * HZ/1000) /* 100 msec */ -#define MSM_CHG_DCD_MAX_RETRIES 6 /* Tdcd_tmout = 6 * 100 msec */ -#define MSM_CHG_PRIMARY_DET_TIME (40 * HZ/1000) /* TVDPSRC_ON */ -#define MSM_CHG_SECONDARY_DET_TIME (40 * HZ/1000) /* TVDMSRC_ON */ -static void msm_chg_detect_work(struct work_struct *w) -{ - struct msm_otg *motg = container_of(w, struct msm_otg, chg_work.work); - struct usb_phy *phy = &motg->phy; - bool is_dcd, tmout, vout; - unsigned long delay; - - dev_dbg(phy->dev, "chg detection work\n"); - switch (motg->chg_state) { - case USB_CHG_STATE_UNDEFINED: - pm_runtime_get_sync(phy->dev); - msm_chg_block_on(motg); - msm_chg_enable_dcd(motg); - motg->chg_state = USB_CHG_STATE_WAIT_FOR_DCD; - motg->dcd_retries = 0; - delay = MSM_CHG_DCD_POLL_TIME; - break; - case USB_CHG_STATE_WAIT_FOR_DCD: - is_dcd = msm_chg_check_dcd(motg); - tmout = ++motg->dcd_retries == MSM_CHG_DCD_MAX_RETRIES; - if (is_dcd || tmout) { - msm_chg_disable_dcd(motg); - msm_chg_enable_primary_det(motg); - delay = MSM_CHG_PRIMARY_DET_TIME; - motg->chg_state = USB_CHG_STATE_DCD_DONE; - } else { - delay = MSM_CHG_DCD_POLL_TIME; - } - break; - case USB_CHG_STATE_DCD_DONE: - vout = msm_chg_check_primary_det(motg); - if (vout) { - msm_chg_enable_secondary_det(motg); - delay = MSM_CHG_SECONDARY_DET_TIME; - motg->chg_state = USB_CHG_STATE_PRIMARY_DONE; - } else { - motg->chg_type = USB_SDP_CHARGER; - motg->chg_state = USB_CHG_STATE_DETECTED; - delay = 0; - } - break; - case USB_CHG_STATE_PRIMARY_DONE: - vout = msm_chg_check_secondary_det(motg); - if (vout) - motg->chg_type = USB_DCP_CHARGER; - else - motg->chg_type = USB_CDP_CHARGER; - motg->chg_state = USB_CHG_STATE_SECONDARY_DONE; - /* fall through */ - case USB_CHG_STATE_SECONDARY_DONE: - motg->chg_state = USB_CHG_STATE_DETECTED; - case USB_CHG_STATE_DETECTED: - msm_chg_block_off(motg); - dev_dbg(phy->dev, "charger = %d\n", motg->chg_type); - schedule_work(&motg->sm_work); - return; - default: - return; - } - - schedule_delayed_work(&motg->chg_work, delay); -} - -/* - * We support OTG, Peripheral only and Host only configurations. In case - * of OTG, mode switch (host-->peripheral/peripheral-->host) can happen - * via Id pin status or user request (debugfs). Id/BSV interrupts are not - * enabled when switch is controlled by user and default mode is supplied - * by board file, which can be changed by userspace later. - */ -static void msm_otg_init_sm(struct msm_otg *motg) -{ - struct msm_otg_platform_data *pdata = motg->pdata; - u32 otgsc = readl(USB_OTGSC); - - switch (pdata->mode) { - case USB_DR_MODE_OTG: - if (pdata->otg_control == OTG_PHY_CONTROL) { - if (otgsc & OTGSC_ID) - set_bit(ID, &motg->inputs); - else - clear_bit(ID, &motg->inputs); - - if (otgsc & OTGSC_BSV) - set_bit(B_SESS_VLD, &motg->inputs); - else - clear_bit(B_SESS_VLD, &motg->inputs); - } else if (pdata->otg_control == OTG_USER_CONTROL) { - set_bit(ID, &motg->inputs); - clear_bit(B_SESS_VLD, &motg->inputs); - } - break; - case USB_DR_MODE_HOST: - clear_bit(ID, &motg->inputs); - break; - case USB_DR_MODE_PERIPHERAL: - set_bit(ID, &motg->inputs); - if (otgsc & OTGSC_BSV) - set_bit(B_SESS_VLD, &motg->inputs); - else - clear_bit(B_SESS_VLD, &motg->inputs); - break; - default: - break; - } -} - -static void msm_otg_sm_work(struct work_struct *w) -{ - struct msm_otg *motg = container_of(w, struct msm_otg, sm_work); - struct usb_otg *otg = motg->phy.otg; - - switch (otg->state) { - case OTG_STATE_UNDEFINED: - dev_dbg(otg->usb_phy->dev, "OTG_STATE_UNDEFINED state\n"); - msm_otg_reset(otg->usb_phy); - msm_otg_init_sm(motg); - otg->state = OTG_STATE_B_IDLE; - /* FALL THROUGH */ - case OTG_STATE_B_IDLE: - dev_dbg(otg->usb_phy->dev, "OTG_STATE_B_IDLE state\n"); - if (!test_bit(ID, &motg->inputs) && otg->host) { - /* disable BSV bit */ - writel(readl(USB_OTGSC) & ~OTGSC_BSVIE, USB_OTGSC); - msm_otg_start_host(otg->usb_phy, 1); - otg->state = OTG_STATE_A_HOST; - } else if (test_bit(B_SESS_VLD, &motg->inputs)) { - switch (motg->chg_state) { - case USB_CHG_STATE_UNDEFINED: - msm_chg_detect_work(&motg->chg_work.work); - break; - case USB_CHG_STATE_DETECTED: - switch (motg->chg_type) { - case USB_DCP_CHARGER: - msm_otg_notify_charger(motg, - IDEV_CHG_MAX); - break; - case USB_CDP_CHARGER: - msm_otg_notify_charger(motg, - IDEV_CHG_MAX); - msm_otg_start_peripheral(otg->usb_phy, - 1); - otg->state - = OTG_STATE_B_PERIPHERAL; - break; - case USB_SDP_CHARGER: - msm_otg_notify_charger(motg, IUNIT); - msm_otg_start_peripheral(otg->usb_phy, - 1); - otg->state - = OTG_STATE_B_PERIPHERAL; - break; - default: - break; - } - break; - default: - break; - } - } else { - /* - * If charger detection work is pending, decrement - * the pm usage counter to balance with the one that - * is incremented in charger detection work. - */ - if (cancel_delayed_work_sync(&motg->chg_work)) { - pm_runtime_put_sync(otg->usb_phy->dev); - msm_otg_reset(otg->usb_phy); - } - msm_otg_notify_charger(motg, 0); - motg->chg_state = USB_CHG_STATE_UNDEFINED; - motg->chg_type = USB_INVALID_CHARGER; - } - - if (otg->state == OTG_STATE_B_IDLE) - pm_runtime_put_sync(otg->usb_phy->dev); - break; - case OTG_STATE_B_PERIPHERAL: - dev_dbg(otg->usb_phy->dev, "OTG_STATE_B_PERIPHERAL state\n"); - if (!test_bit(B_SESS_VLD, &motg->inputs) || - !test_bit(ID, &motg->inputs)) { - msm_otg_notify_charger(motg, 0); - msm_otg_start_peripheral(otg->usb_phy, 0); - motg->chg_state = USB_CHG_STATE_UNDEFINED; - motg->chg_type = USB_INVALID_CHARGER; - otg->state = OTG_STATE_B_IDLE; - msm_otg_reset(otg->usb_phy); - schedule_work(w); - } - break; - case OTG_STATE_A_HOST: - dev_dbg(otg->usb_phy->dev, "OTG_STATE_A_HOST state\n"); - if (test_bit(ID, &motg->inputs)) { - msm_otg_start_host(otg->usb_phy, 0); - otg->state = OTG_STATE_B_IDLE; - msm_otg_reset(otg->usb_phy); - schedule_work(w); - } - break; - default: - break; - } -} - -static irqreturn_t msm_otg_irq(int irq, void *data) -{ - struct msm_otg *motg = data; - struct usb_phy *phy = &motg->phy; - u32 otgsc = 0; - - if (atomic_read(&motg->in_lpm)) { - disable_irq_nosync(irq); - motg->async_int = 1; - pm_runtime_get(phy->dev); - return IRQ_HANDLED; - } - - otgsc = readl(USB_OTGSC); - if (!(otgsc & (OTGSC_IDIS | OTGSC_BSVIS))) - return IRQ_NONE; - - if ((otgsc & OTGSC_IDIS) && (otgsc & OTGSC_IDIE)) { - if (otgsc & OTGSC_ID) - set_bit(ID, &motg->inputs); - else - clear_bit(ID, &motg->inputs); - dev_dbg(phy->dev, "ID set/clear\n"); - pm_runtime_get_noresume(phy->dev); - } else if ((otgsc & OTGSC_BSVIS) && (otgsc & OTGSC_BSVIE)) { - if (otgsc & OTGSC_BSV) - set_bit(B_SESS_VLD, &motg->inputs); - else - clear_bit(B_SESS_VLD, &motg->inputs); - dev_dbg(phy->dev, "BSV set/clear\n"); - pm_runtime_get_noresume(phy->dev); - } - - writel(otgsc, USB_OTGSC); - schedule_work(&motg->sm_work); - return IRQ_HANDLED; -} - -static int msm_otg_mode_show(struct seq_file *s, void *unused) -{ - struct msm_otg *motg = s->private; - struct usb_otg *otg = motg->phy.otg; - - switch (otg->state) { - case OTG_STATE_A_HOST: - seq_puts(s, "host\n"); - break; - case OTG_STATE_B_PERIPHERAL: - seq_puts(s, "peripheral\n"); - break; - default: - seq_puts(s, "none\n"); - break; - } - - return 0; -} - -static int msm_otg_mode_open(struct inode *inode, struct file *file) -{ - return single_open(file, msm_otg_mode_show, inode->i_private); -} - -static ssize_t msm_otg_mode_write(struct file *file, const char __user *ubuf, - size_t count, loff_t *ppos) -{ - struct seq_file *s = file->private_data; - struct msm_otg *motg = s->private; - char buf[16]; - struct usb_otg *otg = motg->phy.otg; - int status = count; - enum usb_dr_mode req_mode; - - memset(buf, 0x00, sizeof(buf)); - - if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count))) { - status = -EFAULT; - goto out; - } - - if (!strncmp(buf, "host", 4)) { - req_mode = USB_DR_MODE_HOST; - } else if (!strncmp(buf, "peripheral", 10)) { - req_mode = USB_DR_MODE_PERIPHERAL; - } else if (!strncmp(buf, "none", 4)) { - req_mode = USB_DR_MODE_UNKNOWN; - } else { - status = -EINVAL; - goto out; - } - - switch (req_mode) { - case USB_DR_MODE_UNKNOWN: - switch (otg->state) { - case OTG_STATE_A_HOST: - case OTG_STATE_B_PERIPHERAL: - set_bit(ID, &motg->inputs); - clear_bit(B_SESS_VLD, &motg->inputs); - break; - default: - goto out; - } - break; - case USB_DR_MODE_PERIPHERAL: - switch (otg->state) { - case OTG_STATE_B_IDLE: - case OTG_STATE_A_HOST: - set_bit(ID, &motg->inputs); - set_bit(B_SESS_VLD, &motg->inputs); - break; - default: - goto out; - } - break; - case USB_DR_MODE_HOST: - switch (otg->state) { - case OTG_STATE_B_IDLE: - case OTG_STATE_B_PERIPHERAL: - clear_bit(ID, &motg->inputs); - break; - default: - goto out; - } - break; - default: - goto out; - } - - pm_runtime_get_sync(otg->usb_phy->dev); - schedule_work(&motg->sm_work); -out: - return status; -} - -static const struct file_operations msm_otg_mode_fops = { - .open = msm_otg_mode_open, - .read = seq_read, - .write = msm_otg_mode_write, - .llseek = seq_lseek, - .release = single_release, -}; - -static struct dentry *msm_otg_dbg_root; -static struct dentry *msm_otg_dbg_mode; - -static int msm_otg_debugfs_init(struct msm_otg *motg) -{ - msm_otg_dbg_root = debugfs_create_dir("msm_otg", NULL); - - if (!msm_otg_dbg_root || IS_ERR(msm_otg_dbg_root)) - return -ENODEV; - - msm_otg_dbg_mode = debugfs_create_file("mode", S_IRUGO | S_IWUSR, - msm_otg_dbg_root, motg, &msm_otg_mode_fops); - if (!msm_otg_dbg_mode) { - debugfs_remove(msm_otg_dbg_root); - msm_otg_dbg_root = NULL; - return -ENODEV; - } - - return 0; -} - -static void msm_otg_debugfs_cleanup(void) -{ - debugfs_remove(msm_otg_dbg_mode); - debugfs_remove(msm_otg_dbg_root); -} - -static const struct of_device_id msm_otg_dt_match[] = { - { - .compatible = "qcom,usb-otg-ci", - .data = (void *) CI_45NM_INTEGRATED_PHY - }, - { - .compatible = "qcom,usb-otg-snps", - .data = (void *) SNPS_28NM_INTEGRATED_PHY - }, - { } -}; -MODULE_DEVICE_TABLE(of, msm_otg_dt_match); - -static int msm_otg_vbus_notifier(struct notifier_block *nb, unsigned long event, - void *ptr) -{ - struct usb_phy *usb_phy = container_of(nb, struct usb_phy, vbus_nb); - struct msm_otg *motg = container_of(usb_phy, struct msm_otg, phy); - - if (event) - set_bit(B_SESS_VLD, &motg->inputs); - else - clear_bit(B_SESS_VLD, &motg->inputs); - - if (test_bit(B_SESS_VLD, &motg->inputs)) { - /* Switch D+/D- lines to Device connector */ - gpiod_set_value_cansleep(motg->switch_gpio, 0); - } else { - /* Switch D+/D- lines to Hub */ - gpiod_set_value_cansleep(motg->switch_gpio, 1); - } - - schedule_work(&motg->sm_work); - - return NOTIFY_DONE; -} - -static int msm_otg_id_notifier(struct notifier_block *nb, unsigned long event, - void *ptr) -{ - struct usb_phy *usb_phy = container_of(nb, struct usb_phy, id_nb); - struct msm_otg *motg = container_of(usb_phy, struct msm_otg, phy); - - if (event) - clear_bit(ID, &motg->inputs); - else - set_bit(ID, &motg->inputs); - - schedule_work(&motg->sm_work); - - return NOTIFY_DONE; -} - -static int msm_otg_read_dt(struct platform_device *pdev, struct msm_otg *motg) -{ - struct msm_otg_platform_data *pdata; - struct device_node *node = pdev->dev.of_node; - struct property *prop; - int len, ret, words; - u32 val, tmp[3]; - - pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL); - if (!pdata) - return -ENOMEM; - - motg->pdata = pdata; - - pdata->phy_type = (enum msm_usb_phy_type)of_device_get_match_data(&pdev->dev); - if (!pdata->phy_type) - return 1; - - motg->link_rst = devm_reset_control_get(&pdev->dev, "link"); - if (IS_ERR(motg->link_rst)) - return PTR_ERR(motg->link_rst); - - motg->phy_rst = devm_reset_control_get(&pdev->dev, "phy"); - if (IS_ERR(motg->phy_rst)) - motg->phy_rst = NULL; - - pdata->mode = usb_get_dr_mode(&pdev->dev); - if (pdata->mode == USB_DR_MODE_UNKNOWN) - pdata->mode = USB_DR_MODE_OTG; - - pdata->otg_control = OTG_PHY_CONTROL; - if (!of_property_read_u32(node, "qcom,otg-control", &val)) - if (val == OTG_PMIC_CONTROL) - pdata->otg_control = val; - - if (!of_property_read_u32(node, "qcom,phy-num", &val) && val < 2) - motg->phy_number = val; - - motg->vdd_levels[VDD_LEVEL_NONE] = USB_PHY_SUSP_DIG_VOL; - motg->vdd_levels[VDD_LEVEL_MIN] = USB_PHY_VDD_DIG_VOL_MIN; - motg->vdd_levels[VDD_LEVEL_MAX] = USB_PHY_VDD_DIG_VOL_MAX; - - if (of_get_property(node, "qcom,vdd-levels", &len) && - len == sizeof(tmp)) { - of_property_read_u32_array(node, "qcom,vdd-levels", - tmp, len / sizeof(*tmp)); - motg->vdd_levels[VDD_LEVEL_NONE] = tmp[VDD_LEVEL_NONE]; - motg->vdd_levels[VDD_LEVEL_MIN] = tmp[VDD_LEVEL_MIN]; - motg->vdd_levels[VDD_LEVEL_MAX] = tmp[VDD_LEVEL_MAX]; - } - - motg->manual_pullup = of_property_read_bool(node, "qcom,manual-pullup"); - - motg->switch_gpio = devm_gpiod_get_optional(&pdev->dev, "switch", - GPIOD_OUT_LOW); - if (IS_ERR(motg->switch_gpio)) - return PTR_ERR(motg->switch_gpio); - - prop = of_find_property(node, "qcom,phy-init-sequence", &len); - if (!prop || !len) - return 0; - - words = len / sizeof(u32); - - if (words >= ULPI_EXT_VENDOR_SPECIFIC) { - dev_warn(&pdev->dev, "Too big PHY init sequence %d\n", words); - return 0; - } - - pdata->phy_init_seq = devm_kzalloc(&pdev->dev, len, GFP_KERNEL); - if (!pdata->phy_init_seq) - return 0; - - ret = of_property_read_u32_array(node, "qcom,phy-init-sequence", - pdata->phy_init_seq, words); - if (!ret) - pdata->phy_init_sz = words; - - return 0; -} - -static int msm_otg_reboot_notify(struct notifier_block *this, - unsigned long code, void *unused) -{ - struct msm_otg *motg = container_of(this, struct msm_otg, reboot); - - /* - * Ensure that D+/D- lines are routed to uB connector, so - * we could load bootloader/kernel at next reboot - */ - gpiod_set_value_cansleep(motg->switch_gpio, 0); - return NOTIFY_DONE; -} - -static int msm_otg_probe(struct platform_device *pdev) -{ - int ret = 0; - struct device_node *np = pdev->dev.of_node; - struct msm_otg_platform_data *pdata; - struct resource *res; - struct msm_otg *motg; - struct usb_phy *phy; - void __iomem *phy_select; - - motg = devm_kzalloc(&pdev->dev, sizeof(struct msm_otg), GFP_KERNEL); - if (!motg) - return -ENOMEM; - - motg->phy.otg = devm_kzalloc(&pdev->dev, sizeof(struct usb_otg), - GFP_KERNEL); - if (!motg->phy.otg) - return -ENOMEM; - - phy = &motg->phy; - phy->dev = &pdev->dev; - - motg->clk = devm_clk_get(&pdev->dev, np ? "core" : "usb_hs_clk"); - if (IS_ERR(motg->clk)) { - dev_err(&pdev->dev, "failed to get usb_hs_clk\n"); - return PTR_ERR(motg->clk); - } - - /* - * If USB Core is running its protocol engine based on CORE CLK, - * CORE CLK must be running at >55Mhz for correct HSUSB - * operation and USB core cannot tolerate frequency changes on - * CORE CLK. - */ - motg->pclk = devm_clk_get(&pdev->dev, np ? "iface" : "usb_hs_pclk"); - if (IS_ERR(motg->pclk)) { - dev_err(&pdev->dev, "failed to get usb_hs_pclk\n"); - return PTR_ERR(motg->pclk); - } - - /* - * USB core clock is not present on all MSM chips. This - * clock is introduced to remove the dependency on AXI - * bus frequency. - */ - motg->core_clk = devm_clk_get(&pdev->dev, - np ? "alt_core" : "usb_hs_core_clk"); - - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - if (!res) - return -EINVAL; - motg->regs = devm_ioremap(&pdev->dev, res->start, resource_size(res)); - if (!motg->regs) - return -ENOMEM; - - pdata = dev_get_platdata(&pdev->dev); - if (!pdata) { - if (!np) - return -ENXIO; - ret = msm_otg_read_dt(pdev, motg); - if (ret) - return ret; - } - - /* - * NOTE: The PHYs can be multiplexed between the chipidea controller - * and the dwc3 controller, using a single bit. It is important that - * the dwc3 driver does not set this bit in an incompatible way. - */ - if (motg->phy_number) { - phy_select = devm_ioremap_nocache(&pdev->dev, USB2_PHY_SEL, 4); - if (!phy_select) - return -ENOMEM; - - /* Enable second PHY with the OTG port */ - writel(0x1, phy_select); - } - - dev_info(&pdev->dev, "OTG regs = %p\n", motg->regs); - - motg->irq = platform_get_irq(pdev, 0); - if (motg->irq < 0) { - dev_err(&pdev->dev, "platform_get_irq failed\n"); - ret = motg->irq; - return motg->irq; - } - - motg->supplies[0].supply = "vddcx"; - motg->supplies[1].supply = "v3p3"; - motg->supplies[2].supply = "v1p8"; - - ret = devm_regulator_bulk_get(motg->phy.dev, ARRAY_SIZE(motg->supplies), - motg->supplies); - if (ret) - return ret; - - motg->vddcx = motg->supplies[0].consumer; - motg->v3p3 = motg->supplies[1].consumer; - motg->v1p8 = motg->supplies[2].consumer; - - clk_set_rate(motg->clk, 60000000); - - clk_prepare_enable(motg->clk); - clk_prepare_enable(motg->pclk); - - if (!IS_ERR(motg->core_clk)) - clk_prepare_enable(motg->core_clk); - - ret = msm_hsusb_init_vddcx(motg, 1); - if (ret) { - dev_err(&pdev->dev, "hsusb vddcx configuration failed\n"); - goto disable_clks; - } - - ret = msm_hsusb_ldo_init(motg, 1); - if (ret) { - dev_err(&pdev->dev, "hsusb vreg configuration failed\n"); - goto disable_vddcx; - } - ret = msm_hsusb_ldo_set_mode(motg, 1); - if (ret) { - dev_err(&pdev->dev, "hsusb vreg enable failed\n"); - goto disable_ldo; - } - - writel(0, USB_USBINTR); - writel(0, USB_OTGSC); - - INIT_WORK(&motg->sm_work, msm_otg_sm_work); - INIT_DELAYED_WORK(&motg->chg_work, msm_chg_detect_work); - ret = devm_request_irq(&pdev->dev, motg->irq, msm_otg_irq, IRQF_SHARED, - "msm_otg", motg); - if (ret) { - dev_err(&pdev->dev, "request irq failed\n"); - goto disable_ldo; - } - - phy->init = msm_phy_init; - phy->notify_disconnect = msm_phy_notify_disconnect; - phy->type = USB_PHY_TYPE_USB2; - phy->vbus_nb.notifier_call = msm_otg_vbus_notifier; - phy->id_nb.notifier_call = msm_otg_id_notifier; - - phy->io_ops = &msm_otg_io_ops; - - phy->otg->usb_phy = &motg->phy; - phy->otg->set_host = msm_otg_set_host; - phy->otg->set_peripheral = msm_otg_set_peripheral; - - msm_usb_reset(phy); - - ret = usb_add_phy_dev(&motg->phy); - if (ret) { - dev_err(&pdev->dev, "usb_add_phy failed\n"); - goto disable_ldo; - } - - ret = extcon_get_state(phy->edev, EXTCON_USB); - if (ret) - set_bit(B_SESS_VLD, &motg->inputs); - else - clear_bit(B_SESS_VLD, &motg->inputs); - - ret = extcon_get_state(phy->id_edev, EXTCON_USB_HOST); - if (ret) - clear_bit(ID, &motg->inputs); - else - set_bit(ID, &motg->inputs); - - platform_set_drvdata(pdev, motg); - device_init_wakeup(&pdev->dev, 1); - - if (motg->pdata->mode == USB_DR_MODE_OTG && - motg->pdata->otg_control == OTG_USER_CONTROL) { - ret = msm_otg_debugfs_init(motg); - if (ret) - dev_dbg(&pdev->dev, "Can not create mode change file\n"); - } - - if (test_bit(B_SESS_VLD, &motg->inputs)) { - /* Switch D+/D- lines to Device connector */ - gpiod_set_value_cansleep(motg->switch_gpio, 0); - } else { - /* Switch D+/D- lines to Hub */ - gpiod_set_value_cansleep(motg->switch_gpio, 1); - } - - motg->reboot.notifier_call = msm_otg_reboot_notify; - register_reboot_notifier(&motg->reboot); - - pm_runtime_set_active(&pdev->dev); - pm_runtime_enable(&pdev->dev); - - return 0; - -disable_ldo: - msm_hsusb_ldo_init(motg, 0); -disable_vddcx: - msm_hsusb_init_vddcx(motg, 0); -disable_clks: - clk_disable_unprepare(motg->pclk); - clk_disable_unprepare(motg->clk); - if (!IS_ERR(motg->core_clk)) - clk_disable_unprepare(motg->core_clk); - - return ret; -} - -static int msm_otg_remove(struct platform_device *pdev) -{ - struct msm_otg *motg = platform_get_drvdata(pdev); - struct usb_phy *phy = &motg->phy; - int cnt = 0; - - if (phy->otg->host || phy->otg->gadget) - return -EBUSY; - - unregister_reboot_notifier(&motg->reboot); - - /* - * Ensure that D+/D- lines are routed to uB connector, so - * we could load bootloader/kernel at next reboot - */ - gpiod_set_value_cansleep(motg->switch_gpio, 0); - - msm_otg_debugfs_cleanup(); - cancel_delayed_work_sync(&motg->chg_work); - cancel_work_sync(&motg->sm_work); - - pm_runtime_resume(&pdev->dev); - - device_init_wakeup(&pdev->dev, 0); - pm_runtime_disable(&pdev->dev); - - usb_remove_phy(phy); - disable_irq(motg->irq); - - /* - * Put PHY in low power mode. - */ - ulpi_read(phy, 0x14); - ulpi_write(phy, 0x08, 0x09); - - writel(readl(USB_PORTSC) | PORTSC_PHCD, USB_PORTSC); - while (cnt < PHY_SUSPEND_TIMEOUT_USEC) { - if (readl(USB_PORTSC) & PORTSC_PHCD) - break; - udelay(1); - cnt++; - } - if (cnt >= PHY_SUSPEND_TIMEOUT_USEC) - dev_err(phy->dev, "Unable to suspend PHY\n"); - - clk_disable_unprepare(motg->pclk); - clk_disable_unprepare(motg->clk); - if (!IS_ERR(motg->core_clk)) - clk_disable_unprepare(motg->core_clk); - msm_hsusb_ldo_init(motg, 0); - - pm_runtime_set_suspended(&pdev->dev); - - return 0; -} - -#ifdef CONFIG_PM -static int msm_otg_runtime_idle(struct device *dev) -{ - struct msm_otg *motg = dev_get_drvdata(dev); - struct usb_otg *otg = motg->phy.otg; - - dev_dbg(dev, "OTG runtime idle\n"); - - /* - * It is observed some times that a spurious interrupt - * comes when PHY is put into LPM immediately after PHY reset. - * This 1 sec delay also prevents entering into LPM immediately - * after asynchronous interrupt. - */ - if (otg->state != OTG_STATE_UNDEFINED) - pm_schedule_suspend(dev, 1000); - - return -EAGAIN; -} - -static int msm_otg_runtime_suspend(struct device *dev) -{ - struct msm_otg *motg = dev_get_drvdata(dev); - - dev_dbg(dev, "OTG runtime suspend\n"); - return msm_otg_suspend(motg); -} - -static int msm_otg_runtime_resume(struct device *dev) -{ - struct msm_otg *motg = dev_get_drvdata(dev); - - dev_dbg(dev, "OTG runtime resume\n"); - return msm_otg_resume(motg); -} -#endif - -#ifdef CONFIG_PM_SLEEP -static int msm_otg_pm_suspend(struct device *dev) -{ - struct msm_otg *motg = dev_get_drvdata(dev); - - dev_dbg(dev, "OTG PM suspend\n"); - return msm_otg_suspend(motg); -} - -static int msm_otg_pm_resume(struct device *dev) -{ - struct msm_otg *motg = dev_get_drvdata(dev); - int ret; - - dev_dbg(dev, "OTG PM resume\n"); - - ret = msm_otg_resume(motg); - if (ret) - return ret; - - /* - * Runtime PM Documentation recommends bringing the - * device to full powered state upon resume. - */ - pm_runtime_disable(dev); - pm_runtime_set_active(dev); - pm_runtime_enable(dev); - - return 0; -} -#endif - -static const struct dev_pm_ops msm_otg_dev_pm_ops = { - SET_SYSTEM_SLEEP_PM_OPS(msm_otg_pm_suspend, msm_otg_pm_resume) - SET_RUNTIME_PM_OPS(msm_otg_runtime_suspend, msm_otg_runtime_resume, - msm_otg_runtime_idle) -}; - -static struct platform_driver msm_otg_driver = { - .probe = msm_otg_probe, - .remove = msm_otg_remove, - .driver = { - .name = DRIVER_NAME, - .pm = &msm_otg_dev_pm_ops, - .of_match_table = msm_otg_dt_match, - }, -}; - -module_platform_driver(msm_otg_driver); - -MODULE_LICENSE("GPL v2"); -MODULE_DESCRIPTION("MSM USB transceiver driver"); -- 2.11.0 ^ permalink raw reply related [flat|nested] 13+ messages in thread
* [PATCH v2 3/3] usb: phy: remove phy-qcom-8x16-usb.c 2017-10-26 13:48 ` Alex Elder @ 2017-10-26 13:48 ` Alex Elder -1 siblings, 0 replies; 13+ messages in thread From: Alex Elder @ 2017-10-26 13:48 UTC (permalink / raw) To: gregkh, stern, balbi Cc: manjunath.goudar, bjorn.andersson, Linyu.Yuan, andy.gross, tony, linux-usb, linux-arm-msm, linux-arm-kernel, linux-kernel No Qualcomm SoC requires the "phy-qcom-8x16-usb.c" USB phy driver support any more, so remove the code. Suggested-by: Stephen Boyd <sboyd@codeaurora.org> Signed-off-by: Alex Elder <elder@linaro.org> Acked-by: Bjorn Andersson <bjorn.andersson@linaro.org> Acked-by: Andy Gross <andy.gross@linaro.org> --- v2: Update the Kconfig file so it no longer offers to build this code, as suggested by Felipe Balbi. drivers/usb/phy/Kconfig | 14 -- drivers/usb/phy/Makefile | 1 - drivers/usb/phy/phy-qcom-8x16-usb.c | 366 ------------------------------------ 3 files changed, 381 deletions(-) delete mode 100644 drivers/usb/phy/phy-qcom-8x16-usb.c diff --git a/drivers/usb/phy/Kconfig b/drivers/usb/phy/Kconfig index f5775e5c9f52..0f8ab981d572 100644 --- a/drivers/usb/phy/Kconfig +++ b/drivers/usb/phy/Kconfig @@ -137,20 +137,6 @@ config USB_ISP1301 To compile this driver as a module, choose M here: the module will be called phy-isp1301. -config USB_QCOM_8X16_PHY - tristate "Qualcomm APQ8016/MSM8916 on-chip USB PHY controller support" - depends on ARCH_QCOM || COMPILE_TEST - depends on RESET_CONTROLLER - select USB_PHY - select USB_ULPI_VIEWPORT - help - Enable this to support the USB transceiver on Qualcomm 8x16 chipsets. - It handles PHY initialization, clock management, power management, - and workarounds required after resetting the hardware. - - To compile this driver as a module, choose M here: the - module will be called phy-qcom-8x16-usb. - config USB_MV_OTG tristate "Marvell USB OTG support" depends on USB_EHCI_MV && USB_MV_UDC && PM && USB_OTG diff --git a/drivers/usb/phy/Makefile b/drivers/usb/phy/Makefile index 61013f38abbe..8beefb7f2777 100644 --- a/drivers/usb/phy/Makefile +++ b/drivers/usb/phy/Makefile @@ -18,7 +18,6 @@ obj-$(CONFIG_TWL6030_USB) += phy-twl6030-usb.o obj-$(CONFIG_USB_EHCI_TEGRA) += phy-tegra-usb.o obj-$(CONFIG_USB_GPIO_VBUS) += phy-gpio-vbus-usb.o obj-$(CONFIG_USB_ISP1301) += phy-isp1301.o -obj-$(CONFIG_USB_QCOM_8X16_PHY) += phy-qcom-8x16-usb.o obj-$(CONFIG_USB_MV_OTG) += phy-mv-usb.o obj-$(CONFIG_USB_MXS_PHY) += phy-mxs-usb.o obj-$(CONFIG_USB_ULPI) += phy-ulpi.o diff --git a/drivers/usb/phy/phy-qcom-8x16-usb.c b/drivers/usb/phy/phy-qcom-8x16-usb.c deleted file mode 100644 index 679afeaaa9a8..000000000000 --- a/drivers/usb/phy/phy-qcom-8x16-usb.c +++ /dev/null @@ -1,366 +0,0 @@ -/* - * Copyright (c) 2015, Linaro Limited - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 and - * only version 2 as published by the Free Software Foundation. - * - * 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 <linux/clk.h> -#include <linux/delay.h> -#include <linux/device.h> -#include <linux/err.h> -#include <linux/extcon.h> -#include <linux/gpio/consumer.h> -#include <linux/io.h> -#include <linux/module.h> -#include <linux/of.h> -#include <linux/platform_device.h> -#include <linux/reboot.h> -#include <linux/regulator/consumer.h> -#include <linux/reset.h> -#include <linux/slab.h> -#include <linux/usb.h> -#include <linux/usb/ulpi.h> - -#define HSPHY_AHBBURST 0x0090 -#define HSPHY_AHBMODE 0x0098 -#define HSPHY_GENCONFIG 0x009c -#define HSPHY_GENCONFIG_2 0x00a0 - -#define HSPHY_USBCMD 0x0140 -#define HSPHY_ULPI_VIEWPORT 0x0170 -#define HSPHY_CTRL 0x0240 - -#define HSPHY_TXFIFO_IDLE_FORCE_DIS BIT(4) -#define HSPHY_SESS_VLD_CTRL_EN BIT(7) -#define HSPHY_POR_ASSERT BIT(0) -#define HSPHY_RETEN BIT(1) - -#define HSPHY_SESS_VLD_CTRL BIT(25) - -#define ULPI_PWR_CLK_MNG_REG 0x88 -#define ULPI_PWR_OTG_COMP_DISABLE BIT(0) - -#define ULPI_MISC_A 0x96 -#define ULPI_MISC_A_VBUSVLDEXTSEL BIT(1) -#define ULPI_MISC_A_VBUSVLDEXT BIT(0) - -#define HSPHY_3P3_MIN 3050000 /* uV */ -#define HSPHY_3P3_MAX 3300000 /* uV */ - -#define HSPHY_1P8_MIN 1800000 /* uV */ -#define HSPHY_1P8_MAX 1800000 /* uV */ - -#define HSPHY_VDD_MIN 5 -#define HSPHY_VDD_MAX 7 - -struct phy_8x16 { - struct usb_phy phy; - void __iomem *regs; - struct clk *core_clk; - struct clk *iface_clk; - struct regulator_bulk_data regulator[3]; - - struct reset_control *phy_reset; - - struct gpio_desc *switch_gpio; - struct notifier_block reboot_notify; -}; - -static int phy_8x16_notify_connect(struct usb_phy *phy, - enum usb_device_speed speed) -{ - struct phy_8x16 *qphy = container_of(phy, struct phy_8x16, phy); - u32 val; - - val = ULPI_MISC_A_VBUSVLDEXTSEL | ULPI_MISC_A_VBUSVLDEXT; - usb_phy_io_write(&qphy->phy, val, ULPI_SET(ULPI_MISC_A)); - - val = readl(qphy->regs + HSPHY_USBCMD); - val |= HSPHY_SESS_VLD_CTRL; - writel(val, qphy->regs + HSPHY_USBCMD); - - return 0; -} - -static int phy_8x16_notify_disconnect(struct usb_phy *phy, - enum usb_device_speed speed) -{ - struct phy_8x16 *qphy = container_of(phy, struct phy_8x16, phy); - u32 val; - - val = ULPI_MISC_A_VBUSVLDEXT | ULPI_MISC_A_VBUSVLDEXTSEL; - usb_phy_io_write(&qphy->phy, val, ULPI_CLR(ULPI_MISC_A)); - - val = readl(qphy->regs + HSPHY_USBCMD); - val &= ~HSPHY_SESS_VLD_CTRL; - writel(val, qphy->regs + HSPHY_USBCMD); - - return 0; -} - -static int phy_8x16_vbus_on(struct phy_8x16 *qphy) -{ - phy_8x16_notify_connect(&qphy->phy, USB_SPEED_UNKNOWN); - - /* Switch D+/D- lines to Device connector */ - gpiod_set_value_cansleep(qphy->switch_gpio, 0); - - return 0; -} - -static int phy_8x16_vbus_off(struct phy_8x16 *qphy) -{ - phy_8x16_notify_disconnect(&qphy->phy, USB_SPEED_UNKNOWN); - - /* Switch D+/D- lines to USB HUB */ - gpiod_set_value_cansleep(qphy->switch_gpio, 1); - - return 0; -} - -static int phy_8x16_vbus_notify(struct notifier_block *nb, unsigned long event, - void *ptr) -{ - struct usb_phy *usb_phy = container_of(nb, struct usb_phy, vbus_nb); - struct phy_8x16 *qphy = container_of(usb_phy, struct phy_8x16, phy); - - if (event) - phy_8x16_vbus_on(qphy); - else - phy_8x16_vbus_off(qphy); - - return NOTIFY_DONE; -} - -static int phy_8x16_init(struct usb_phy *phy) -{ - struct phy_8x16 *qphy = container_of(phy, struct phy_8x16, phy); - u32 val, init[] = {0x44, 0x6B, 0x24, 0x13}; - u32 addr = ULPI_EXT_VENDOR_SPECIFIC; - int idx, state; - - for (idx = 0; idx < ARRAY_SIZE(init); idx++) - usb_phy_io_write(phy, init[idx], addr + idx); - - reset_control_reset(qphy->phy_reset); - - /* Assert USB HSPHY_POR */ - val = readl(qphy->regs + HSPHY_CTRL); - val |= HSPHY_POR_ASSERT; - writel(val, qphy->regs + HSPHY_CTRL); - - /* - * wait for minimum 10 microseconds as suggested in HPG. - * Use a slightly larger value since the exact value didn't - * work 100% of the time. - */ - usleep_range(12, 15); - - /* Deassert USB HSPHY_POR */ - val = readl(qphy->regs + HSPHY_CTRL); - val &= ~HSPHY_POR_ASSERT; - writel(val, qphy->regs + HSPHY_CTRL); - - usleep_range(10, 15); - - writel(0x00, qphy->regs + HSPHY_AHBBURST); - writel(0x08, qphy->regs + HSPHY_AHBMODE); - - /* workaround for rx buffer collision issue */ - val = readl(qphy->regs + HSPHY_GENCONFIG); - val &= ~HSPHY_TXFIFO_IDLE_FORCE_DIS; - writel(val, qphy->regs + HSPHY_GENCONFIG); - - val = readl(qphy->regs + HSPHY_GENCONFIG_2); - val |= HSPHY_SESS_VLD_CTRL_EN; - writel(val, qphy->regs + HSPHY_GENCONFIG_2); - - val = ULPI_PWR_OTG_COMP_DISABLE; - usb_phy_io_write(phy, val, ULPI_SET(ULPI_PWR_CLK_MNG_REG)); - - state = extcon_get_state(qphy->phy.edev, EXTCON_USB); - if (state) - phy_8x16_vbus_on(qphy); - else - phy_8x16_vbus_off(qphy); - - val = usb_phy_io_read(&qphy->phy, ULPI_FUNC_CTRL); - val &= ~ULPI_FUNC_CTRL_OPMODE_MASK; - val |= ULPI_FUNC_CTRL_OPMODE_NORMAL; - usb_phy_io_write(&qphy->phy, val, ULPI_FUNC_CTRL); - - return 0; -} - -static void phy_8x16_shutdown(struct usb_phy *phy) -{ - u32 val; - - /* Put the controller in non-driving mode */ - val = usb_phy_io_read(phy, ULPI_FUNC_CTRL); - val &= ~ULPI_FUNC_CTRL_OPMODE_MASK; - val |= ULPI_FUNC_CTRL_OPMODE_NONDRIVING; - usb_phy_io_write(phy, val, ULPI_FUNC_CTRL); -} - -static int phy_8x16_read_devicetree(struct phy_8x16 *qphy) -{ - struct device *dev = qphy->phy.dev; - int ret; - - qphy->core_clk = devm_clk_get(dev, "core"); - if (IS_ERR(qphy->core_clk)) - return PTR_ERR(qphy->core_clk); - - qphy->iface_clk = devm_clk_get(dev, "iface"); - if (IS_ERR(qphy->iface_clk)) - return PTR_ERR(qphy->iface_clk); - - qphy->regulator[0].supply = "v3p3"; - qphy->regulator[1].supply = "v1p8"; - qphy->regulator[2].supply = "vddcx"; - - ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(qphy->regulator), - qphy->regulator); - if (ret) - return ret; - - qphy->phy_reset = devm_reset_control_get(dev, "phy"); - if (IS_ERR(qphy->phy_reset)) - return PTR_ERR(qphy->phy_reset); - - qphy->switch_gpio = devm_gpiod_get_optional(dev, "switch", - GPIOD_OUT_LOW); - return PTR_ERR_OR_ZERO(qphy->switch_gpio); -} - -static int phy_8x16_reboot_notify(struct notifier_block *this, - unsigned long code, void *unused) -{ - struct phy_8x16 *qphy; - - qphy = container_of(this, struct phy_8x16, reboot_notify); - - /* - * Ensure that D+/D- lines are routed to uB connector, so - * we could load bootloader/kernel at next reboot_notify - */ - gpiod_set_value_cansleep(qphy->switch_gpio, 0); - return NOTIFY_DONE; -} - -static int phy_8x16_probe(struct platform_device *pdev) -{ - struct phy_8x16 *qphy; - struct resource *res; - struct usb_phy *phy; - int ret; - - qphy = devm_kzalloc(&pdev->dev, sizeof(*qphy), GFP_KERNEL); - if (!qphy) - return -ENOMEM; - - platform_set_drvdata(pdev, qphy); - - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - qphy->regs = devm_ioremap_resource(&pdev->dev, res); - if (IS_ERR(qphy->regs)) - return PTR_ERR(qphy->regs); - - phy = &qphy->phy; - phy->dev = &pdev->dev; - phy->label = dev_name(&pdev->dev); - phy->init = phy_8x16_init; - phy->shutdown = phy_8x16_shutdown; - phy->notify_connect = phy_8x16_notify_connect; - phy->notify_disconnect = phy_8x16_notify_disconnect; - phy->io_priv = qphy->regs + HSPHY_ULPI_VIEWPORT; - phy->io_ops = &ulpi_viewport_access_ops; - phy->type = USB_PHY_TYPE_USB2; - phy->vbus_nb.notifier_call = phy_8x16_vbus_notify; - phy->id_nb.notifier_call = NULL; - - ret = phy_8x16_read_devicetree(qphy); - if (ret < 0) - return ret; - - ret = clk_set_rate(qphy->core_clk, INT_MAX); - if (ret < 0) - dev_dbg(phy->dev, "Can't boost core clock\n"); - - ret = clk_prepare_enable(qphy->core_clk); - if (ret < 0) - return ret; - - ret = clk_prepare_enable(qphy->iface_clk); - if (ret < 0) - goto off_core; - - ret = regulator_bulk_enable(ARRAY_SIZE(qphy->regulator), - qphy->regulator); - if (WARN_ON(ret)) - goto off_clks; - - ret = usb_add_phy_dev(&qphy->phy); - if (ret) - goto off_power; - - qphy->reboot_notify.notifier_call = phy_8x16_reboot_notify; - register_reboot_notifier(&qphy->reboot_notify); - - return 0; - -off_power: - regulator_bulk_disable(ARRAY_SIZE(qphy->regulator), qphy->regulator); -off_clks: - clk_disable_unprepare(qphy->iface_clk); -off_core: - clk_disable_unprepare(qphy->core_clk); - return ret; -} - -static int phy_8x16_remove(struct platform_device *pdev) -{ - struct phy_8x16 *qphy = platform_get_drvdata(pdev); - - unregister_reboot_notifier(&qphy->reboot_notify); - - /* - * Ensure that D+/D- lines are routed to uB connector, so - * we could load bootloader/kernel at next reboot_notify - */ - gpiod_set_value_cansleep(qphy->switch_gpio, 0); - - usb_remove_phy(&qphy->phy); - - clk_disable_unprepare(qphy->iface_clk); - clk_disable_unprepare(qphy->core_clk); - regulator_bulk_disable(ARRAY_SIZE(qphy->regulator), qphy->regulator); - return 0; -} - -static const struct of_device_id phy_8x16_dt_match[] = { - { .compatible = "qcom,usb-8x16-phy" }, - { } -}; -MODULE_DEVICE_TABLE(of, phy_8x16_dt_match); - -static struct platform_driver phy_8x16_driver = { - .probe = phy_8x16_probe, - .remove = phy_8x16_remove, - .driver = { - .name = "phy-qcom-8x16-usb", - .of_match_table = phy_8x16_dt_match, - }, -}; -module_platform_driver(phy_8x16_driver); - -MODULE_LICENSE("GPL v2"); -MODULE_DESCRIPTION("Qualcomm APQ8016/MSM8916 chipsets USB transceiver driver"); -- 2.11.0 ^ permalink raw reply related [flat|nested] 13+ messages in thread
* [PATCH v2 3/3] usb: phy: remove phy-qcom-8x16-usb.c @ 2017-10-26 13:48 ` Alex Elder 0 siblings, 0 replies; 13+ messages in thread From: Alex Elder @ 2017-10-26 13:48 UTC (permalink / raw) To: linux-arm-kernel No Qualcomm SoC requires the "phy-qcom-8x16-usb.c" USB phy driver support any more, so remove the code. Suggested-by: Stephen Boyd <sboyd@codeaurora.org> Signed-off-by: Alex Elder <elder@linaro.org> Acked-by: Bjorn Andersson <bjorn.andersson@linaro.org> Acked-by: Andy Gross <andy.gross@linaro.org> --- v2: Update the Kconfig file so it no longer offers to build this code, as suggested by Felipe Balbi. drivers/usb/phy/Kconfig | 14 -- drivers/usb/phy/Makefile | 1 - drivers/usb/phy/phy-qcom-8x16-usb.c | 366 ------------------------------------ 3 files changed, 381 deletions(-) delete mode 100644 drivers/usb/phy/phy-qcom-8x16-usb.c diff --git a/drivers/usb/phy/Kconfig b/drivers/usb/phy/Kconfig index f5775e5c9f52..0f8ab981d572 100644 --- a/drivers/usb/phy/Kconfig +++ b/drivers/usb/phy/Kconfig @@ -137,20 +137,6 @@ config USB_ISP1301 To compile this driver as a module, choose M here: the module will be called phy-isp1301. -config USB_QCOM_8X16_PHY - tristate "Qualcomm APQ8016/MSM8916 on-chip USB PHY controller support" - depends on ARCH_QCOM || COMPILE_TEST - depends on RESET_CONTROLLER - select USB_PHY - select USB_ULPI_VIEWPORT - help - Enable this to support the USB transceiver on Qualcomm 8x16 chipsets. - It handles PHY initialization, clock management, power management, - and workarounds required after resetting the hardware. - - To compile this driver as a module, choose M here: the - module will be called phy-qcom-8x16-usb. - config USB_MV_OTG tristate "Marvell USB OTG support" depends on USB_EHCI_MV && USB_MV_UDC && PM && USB_OTG diff --git a/drivers/usb/phy/Makefile b/drivers/usb/phy/Makefile index 61013f38abbe..8beefb7f2777 100644 --- a/drivers/usb/phy/Makefile +++ b/drivers/usb/phy/Makefile @@ -18,7 +18,6 @@ obj-$(CONFIG_TWL6030_USB) += phy-twl6030-usb.o obj-$(CONFIG_USB_EHCI_TEGRA) += phy-tegra-usb.o obj-$(CONFIG_USB_GPIO_VBUS) += phy-gpio-vbus-usb.o obj-$(CONFIG_USB_ISP1301) += phy-isp1301.o -obj-$(CONFIG_USB_QCOM_8X16_PHY) += phy-qcom-8x16-usb.o obj-$(CONFIG_USB_MV_OTG) += phy-mv-usb.o obj-$(CONFIG_USB_MXS_PHY) += phy-mxs-usb.o obj-$(CONFIG_USB_ULPI) += phy-ulpi.o diff --git a/drivers/usb/phy/phy-qcom-8x16-usb.c b/drivers/usb/phy/phy-qcom-8x16-usb.c deleted file mode 100644 index 679afeaaa9a8..000000000000 --- a/drivers/usb/phy/phy-qcom-8x16-usb.c +++ /dev/null @@ -1,366 +0,0 @@ -/* - * Copyright (c) 2015, Linaro Limited - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 and - * only version 2 as published by the Free Software Foundation. - * - * 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 <linux/clk.h> -#include <linux/delay.h> -#include <linux/device.h> -#include <linux/err.h> -#include <linux/extcon.h> -#include <linux/gpio/consumer.h> -#include <linux/io.h> -#include <linux/module.h> -#include <linux/of.h> -#include <linux/platform_device.h> -#include <linux/reboot.h> -#include <linux/regulator/consumer.h> -#include <linux/reset.h> -#include <linux/slab.h> -#include <linux/usb.h> -#include <linux/usb/ulpi.h> - -#define HSPHY_AHBBURST 0x0090 -#define HSPHY_AHBMODE 0x0098 -#define HSPHY_GENCONFIG 0x009c -#define HSPHY_GENCONFIG_2 0x00a0 - -#define HSPHY_USBCMD 0x0140 -#define HSPHY_ULPI_VIEWPORT 0x0170 -#define HSPHY_CTRL 0x0240 - -#define HSPHY_TXFIFO_IDLE_FORCE_DIS BIT(4) -#define HSPHY_SESS_VLD_CTRL_EN BIT(7) -#define HSPHY_POR_ASSERT BIT(0) -#define HSPHY_RETEN BIT(1) - -#define HSPHY_SESS_VLD_CTRL BIT(25) - -#define ULPI_PWR_CLK_MNG_REG 0x88 -#define ULPI_PWR_OTG_COMP_DISABLE BIT(0) - -#define ULPI_MISC_A 0x96 -#define ULPI_MISC_A_VBUSVLDEXTSEL BIT(1) -#define ULPI_MISC_A_VBUSVLDEXT BIT(0) - -#define HSPHY_3P3_MIN 3050000 /* uV */ -#define HSPHY_3P3_MAX 3300000 /* uV */ - -#define HSPHY_1P8_MIN 1800000 /* uV */ -#define HSPHY_1P8_MAX 1800000 /* uV */ - -#define HSPHY_VDD_MIN 5 -#define HSPHY_VDD_MAX 7 - -struct phy_8x16 { - struct usb_phy phy; - void __iomem *regs; - struct clk *core_clk; - struct clk *iface_clk; - struct regulator_bulk_data regulator[3]; - - struct reset_control *phy_reset; - - struct gpio_desc *switch_gpio; - struct notifier_block reboot_notify; -}; - -static int phy_8x16_notify_connect(struct usb_phy *phy, - enum usb_device_speed speed) -{ - struct phy_8x16 *qphy = container_of(phy, struct phy_8x16, phy); - u32 val; - - val = ULPI_MISC_A_VBUSVLDEXTSEL | ULPI_MISC_A_VBUSVLDEXT; - usb_phy_io_write(&qphy->phy, val, ULPI_SET(ULPI_MISC_A)); - - val = readl(qphy->regs + HSPHY_USBCMD); - val |= HSPHY_SESS_VLD_CTRL; - writel(val, qphy->regs + HSPHY_USBCMD); - - return 0; -} - -static int phy_8x16_notify_disconnect(struct usb_phy *phy, - enum usb_device_speed speed) -{ - struct phy_8x16 *qphy = container_of(phy, struct phy_8x16, phy); - u32 val; - - val = ULPI_MISC_A_VBUSVLDEXT | ULPI_MISC_A_VBUSVLDEXTSEL; - usb_phy_io_write(&qphy->phy, val, ULPI_CLR(ULPI_MISC_A)); - - val = readl(qphy->regs + HSPHY_USBCMD); - val &= ~HSPHY_SESS_VLD_CTRL; - writel(val, qphy->regs + HSPHY_USBCMD); - - return 0; -} - -static int phy_8x16_vbus_on(struct phy_8x16 *qphy) -{ - phy_8x16_notify_connect(&qphy->phy, USB_SPEED_UNKNOWN); - - /* Switch D+/D- lines to Device connector */ - gpiod_set_value_cansleep(qphy->switch_gpio, 0); - - return 0; -} - -static int phy_8x16_vbus_off(struct phy_8x16 *qphy) -{ - phy_8x16_notify_disconnect(&qphy->phy, USB_SPEED_UNKNOWN); - - /* Switch D+/D- lines to USB HUB */ - gpiod_set_value_cansleep(qphy->switch_gpio, 1); - - return 0; -} - -static int phy_8x16_vbus_notify(struct notifier_block *nb, unsigned long event, - void *ptr) -{ - struct usb_phy *usb_phy = container_of(nb, struct usb_phy, vbus_nb); - struct phy_8x16 *qphy = container_of(usb_phy, struct phy_8x16, phy); - - if (event) - phy_8x16_vbus_on(qphy); - else - phy_8x16_vbus_off(qphy); - - return NOTIFY_DONE; -} - -static int phy_8x16_init(struct usb_phy *phy) -{ - struct phy_8x16 *qphy = container_of(phy, struct phy_8x16, phy); - u32 val, init[] = {0x44, 0x6B, 0x24, 0x13}; - u32 addr = ULPI_EXT_VENDOR_SPECIFIC; - int idx, state; - - for (idx = 0; idx < ARRAY_SIZE(init); idx++) - usb_phy_io_write(phy, init[idx], addr + idx); - - reset_control_reset(qphy->phy_reset); - - /* Assert USB HSPHY_POR */ - val = readl(qphy->regs + HSPHY_CTRL); - val |= HSPHY_POR_ASSERT; - writel(val, qphy->regs + HSPHY_CTRL); - - /* - * wait for minimum 10 microseconds as suggested in HPG. - * Use a slightly larger value since the exact value didn't - * work 100% of the time. - */ - usleep_range(12, 15); - - /* Deassert USB HSPHY_POR */ - val = readl(qphy->regs + HSPHY_CTRL); - val &= ~HSPHY_POR_ASSERT; - writel(val, qphy->regs + HSPHY_CTRL); - - usleep_range(10, 15); - - writel(0x00, qphy->regs + HSPHY_AHBBURST); - writel(0x08, qphy->regs + HSPHY_AHBMODE); - - /* workaround for rx buffer collision issue */ - val = readl(qphy->regs + HSPHY_GENCONFIG); - val &= ~HSPHY_TXFIFO_IDLE_FORCE_DIS; - writel(val, qphy->regs + HSPHY_GENCONFIG); - - val = readl(qphy->regs + HSPHY_GENCONFIG_2); - val |= HSPHY_SESS_VLD_CTRL_EN; - writel(val, qphy->regs + HSPHY_GENCONFIG_2); - - val = ULPI_PWR_OTG_COMP_DISABLE; - usb_phy_io_write(phy, val, ULPI_SET(ULPI_PWR_CLK_MNG_REG)); - - state = extcon_get_state(qphy->phy.edev, EXTCON_USB); - if (state) - phy_8x16_vbus_on(qphy); - else - phy_8x16_vbus_off(qphy); - - val = usb_phy_io_read(&qphy->phy, ULPI_FUNC_CTRL); - val &= ~ULPI_FUNC_CTRL_OPMODE_MASK; - val |= ULPI_FUNC_CTRL_OPMODE_NORMAL; - usb_phy_io_write(&qphy->phy, val, ULPI_FUNC_CTRL); - - return 0; -} - -static void phy_8x16_shutdown(struct usb_phy *phy) -{ - u32 val; - - /* Put the controller in non-driving mode */ - val = usb_phy_io_read(phy, ULPI_FUNC_CTRL); - val &= ~ULPI_FUNC_CTRL_OPMODE_MASK; - val |= ULPI_FUNC_CTRL_OPMODE_NONDRIVING; - usb_phy_io_write(phy, val, ULPI_FUNC_CTRL); -} - -static int phy_8x16_read_devicetree(struct phy_8x16 *qphy) -{ - struct device *dev = qphy->phy.dev; - int ret; - - qphy->core_clk = devm_clk_get(dev, "core"); - if (IS_ERR(qphy->core_clk)) - return PTR_ERR(qphy->core_clk); - - qphy->iface_clk = devm_clk_get(dev, "iface"); - if (IS_ERR(qphy->iface_clk)) - return PTR_ERR(qphy->iface_clk); - - qphy->regulator[0].supply = "v3p3"; - qphy->regulator[1].supply = "v1p8"; - qphy->regulator[2].supply = "vddcx"; - - ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(qphy->regulator), - qphy->regulator); - if (ret) - return ret; - - qphy->phy_reset = devm_reset_control_get(dev, "phy"); - if (IS_ERR(qphy->phy_reset)) - return PTR_ERR(qphy->phy_reset); - - qphy->switch_gpio = devm_gpiod_get_optional(dev, "switch", - GPIOD_OUT_LOW); - return PTR_ERR_OR_ZERO(qphy->switch_gpio); -} - -static int phy_8x16_reboot_notify(struct notifier_block *this, - unsigned long code, void *unused) -{ - struct phy_8x16 *qphy; - - qphy = container_of(this, struct phy_8x16, reboot_notify); - - /* - * Ensure that D+/D- lines are routed to uB connector, so - * we could load bootloader/kernel at next reboot_notify - */ - gpiod_set_value_cansleep(qphy->switch_gpio, 0); - return NOTIFY_DONE; -} - -static int phy_8x16_probe(struct platform_device *pdev) -{ - struct phy_8x16 *qphy; - struct resource *res; - struct usb_phy *phy; - int ret; - - qphy = devm_kzalloc(&pdev->dev, sizeof(*qphy), GFP_KERNEL); - if (!qphy) - return -ENOMEM; - - platform_set_drvdata(pdev, qphy); - - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - qphy->regs = devm_ioremap_resource(&pdev->dev, res); - if (IS_ERR(qphy->regs)) - return PTR_ERR(qphy->regs); - - phy = &qphy->phy; - phy->dev = &pdev->dev; - phy->label = dev_name(&pdev->dev); - phy->init = phy_8x16_init; - phy->shutdown = phy_8x16_shutdown; - phy->notify_connect = phy_8x16_notify_connect; - phy->notify_disconnect = phy_8x16_notify_disconnect; - phy->io_priv = qphy->regs + HSPHY_ULPI_VIEWPORT; - phy->io_ops = &ulpi_viewport_access_ops; - phy->type = USB_PHY_TYPE_USB2; - phy->vbus_nb.notifier_call = phy_8x16_vbus_notify; - phy->id_nb.notifier_call = NULL; - - ret = phy_8x16_read_devicetree(qphy); - if (ret < 0) - return ret; - - ret = clk_set_rate(qphy->core_clk, INT_MAX); - if (ret < 0) - dev_dbg(phy->dev, "Can't boost core clock\n"); - - ret = clk_prepare_enable(qphy->core_clk); - if (ret < 0) - return ret; - - ret = clk_prepare_enable(qphy->iface_clk); - if (ret < 0) - goto off_core; - - ret = regulator_bulk_enable(ARRAY_SIZE(qphy->regulator), - qphy->regulator); - if (WARN_ON(ret)) - goto off_clks; - - ret = usb_add_phy_dev(&qphy->phy); - if (ret) - goto off_power; - - qphy->reboot_notify.notifier_call = phy_8x16_reboot_notify; - register_reboot_notifier(&qphy->reboot_notify); - - return 0; - -off_power: - regulator_bulk_disable(ARRAY_SIZE(qphy->regulator), qphy->regulator); -off_clks: - clk_disable_unprepare(qphy->iface_clk); -off_core: - clk_disable_unprepare(qphy->core_clk); - return ret; -} - -static int phy_8x16_remove(struct platform_device *pdev) -{ - struct phy_8x16 *qphy = platform_get_drvdata(pdev); - - unregister_reboot_notifier(&qphy->reboot_notify); - - /* - * Ensure that D+/D- lines are routed to uB connector, so - * we could load bootloader/kernel at next reboot_notify - */ - gpiod_set_value_cansleep(qphy->switch_gpio, 0); - - usb_remove_phy(&qphy->phy); - - clk_disable_unprepare(qphy->iface_clk); - clk_disable_unprepare(qphy->core_clk); - regulator_bulk_disable(ARRAY_SIZE(qphy->regulator), qphy->regulator); - return 0; -} - -static const struct of_device_id phy_8x16_dt_match[] = { - { .compatible = "qcom,usb-8x16-phy" }, - { } -}; -MODULE_DEVICE_TABLE(of, phy_8x16_dt_match); - -static struct platform_driver phy_8x16_driver = { - .probe = phy_8x16_probe, - .remove = phy_8x16_remove, - .driver = { - .name = "phy-qcom-8x16-usb", - .of_match_table = phy_8x16_dt_match, - }, -}; -module_platform_driver(phy_8x16_driver); - -MODULE_LICENSE("GPL v2"); -MODULE_DESCRIPTION("Qualcomm APQ8016/MSM8916 chipsets USB transceiver driver"); -- 2.11.0 ^ permalink raw reply related [flat|nested] 13+ messages in thread
end of thread, other threads:[~2017-10-30 21:06 UTC | newest] Thread overview: 13+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2017-10-26 13:48 [PATCH v2 0/3] usb: remove some unused code Alex Elder 2017-10-26 13:48 ` Alex Elder 2017-10-26 13:48 ` [PATCH v2 1/3] usb: host: remove ehci-msm.c Alex Elder 2017-10-26 13:48 ` Alex Elder 2017-10-26 15:06 ` Alan Stern 2017-10-26 15:06 ` Alan Stern 2017-10-26 15:06 ` Alan Stern 2017-10-30 21:06 ` Bjorn Andersson 2017-10-30 21:06 ` Bjorn Andersson 2017-10-26 13:48 ` [PATCH v2 2/3] usb: phy: remove phy-msm-usb.c Alex Elder 2017-10-26 13:48 ` Alex Elder 2017-10-26 13:48 ` [PATCH v2 3/3] usb: phy: remove phy-qcom-8x16-usb.c Alex Elder 2017-10-26 13:48 ` Alex Elder
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