diff options
Diffstat (limited to 'drivers/usb/phy')
| -rw-r--r-- | drivers/usb/phy/Kconfig | 22 | ||||
| -rw-r--r-- | drivers/usb/phy/Makefile | 2 | ||||
| -rw-r--r-- | drivers/usb/phy/phy-gpio-vbus-usb.c | 11 | ||||
| -rw-r--r-- | drivers/usb/phy/phy-omap-control.c | 208 | ||||
| -rw-r--r-- | drivers/usb/phy/phy-omap-usb2.c | 272 | ||||
| -rw-r--r-- | drivers/usb/phy/phy-omap-usb3.c | 32 | ||||
| -rw-r--r-- | drivers/usb/phy/phy-twl4030-usb.c | 796 | ||||
| -rw-r--r-- | drivers/usb/phy/phy-ulpi-viewport.c | 2 |
8 files changed, 139 insertions, 1206 deletions
diff --git a/drivers/usb/phy/Kconfig b/drivers/usb/phy/Kconfig index c0c8cd37648e..08e2f39027ec 100644 --- a/drivers/usb/phy/Kconfig +++ b/drivers/usb/phy/Kconfig @@ -66,17 +66,6 @@ config OMAP_CONTROL_USB power on the USB2 PHY is present in OMAP4 and OMAP5. OMAP5 has an additional register to power on USB3 PHY. -config OMAP_USB2 - tristate "OMAP USB2 PHY Driver" - depends on ARCH_OMAP2PLUS - select OMAP_CONTROL_USB - select USB_PHY - help - Enable this to support the transceiver that is part of SOC. This - driver takes care of all the PHY functionality apart from comparator. - The USB OTG controller communicates with the comparator using this - driver. - config OMAP_USB3 tristate "OMAP USB3 PHY Driver" depends on ARCH_OMAP2PLUS || COMPILE_TEST @@ -93,6 +82,7 @@ config AM335X_CONTROL_USB config AM335X_PHY_USB tristate "AM335x USB PHY Driver" + depends on ARM || COMPILE_TEST select USB_PHY select AM335X_CONTROL_USB select NOP_USB_XCEIV @@ -123,16 +113,6 @@ config SAMSUNG_USB3PHY Enable this to support Samsung USB 3.0 (Super Speed) phy controller for samsung SoCs. -config TWL4030_USB - tristate "TWL4030 USB Transceiver Driver" - depends on TWL4030_CORE && REGULATOR_TWL4030 && USB_MUSB_OMAP2PLUS - select USB_PHY - help - Enable this to support the USB OTG transceiver on TWL4030 - family chips (including the TWL5030 and TPS659x0 devices). - This transceiver supports high and full speed devices plus, - in host mode, low speed. - config TWL6030_USB tristate "TWL6030 USB Transceiver Driver" depends on TWL4030_CORE && OMAP_USB2 && USB_MUSB_OMAP2PLUS diff --git a/drivers/usb/phy/Makefile b/drivers/usb/phy/Makefile index 8c5b14764b72..022c1da7fb78 100644 --- a/drivers/usb/phy/Makefile +++ b/drivers/usb/phy/Makefile @@ -15,12 +15,10 @@ obj-$(CONFIG_NOP_USB_XCEIV) += phy-generic.o obj-$(CONFIG_OMAP_CONTROL_USB) += phy-omap-control.o obj-$(CONFIG_AM335X_CONTROL_USB) += phy-am335x-control.o obj-$(CONFIG_AM335X_PHY_USB) += phy-am335x.o -obj-$(CONFIG_OMAP_USB2) += phy-omap-usb2.o obj-$(CONFIG_OMAP_USB3) += phy-omap-usb3.o obj-$(CONFIG_SAMSUNG_USBPHY) += phy-samsung-usb.o obj-$(CONFIG_SAMSUNG_USB2PHY) += phy-samsung-usb2.o obj-$(CONFIG_SAMSUNG_USB3PHY) += phy-samsung-usb3.o -obj-$(CONFIG_TWL4030_USB) += phy-twl4030-usb.o 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 diff --git a/drivers/usb/phy/phy-gpio-vbus-usb.c b/drivers/usb/phy/phy-gpio-vbus-usb.c index b2f29c9aebbf..02799a5efcd4 100644 --- a/drivers/usb/phy/phy-gpio-vbus-usb.c +++ b/drivers/usb/phy/phy-gpio-vbus-usb.c @@ -241,7 +241,7 @@ static int gpio_vbus_set_suspend(struct usb_phy *phy, int suspend) /* platform driver interface */ -static int __init gpio_vbus_probe(struct platform_device *pdev) +static int gpio_vbus_probe(struct platform_device *pdev) { struct gpio_vbus_mach_info *pdata = dev_get_platdata(&pdev->dev); struct gpio_vbus_data *gpio_vbus; @@ -349,7 +349,7 @@ err_gpio: return err; } -static int __exit gpio_vbus_remove(struct platform_device *pdev) +static int gpio_vbus_remove(struct platform_device *pdev) { struct gpio_vbus_data *gpio_vbus = platform_get_drvdata(pdev); struct gpio_vbus_mach_info *pdata = dev_get_platdata(&pdev->dev); @@ -398,8 +398,6 @@ static const struct dev_pm_ops gpio_vbus_dev_pm_ops = { }; #endif -/* NOTE: the gpio-vbus device may *NOT* be hotplugged */ - MODULE_ALIAS("platform:gpio-vbus"); static struct platform_driver gpio_vbus_driver = { @@ -410,10 +408,11 @@ static struct platform_driver gpio_vbus_driver = { .pm = &gpio_vbus_dev_pm_ops, #endif }, - .remove = __exit_p(gpio_vbus_remove), + .probe = gpio_vbus_probe, + .remove = gpio_vbus_remove, }; -module_platform_driver_probe(gpio_vbus_driver, gpio_vbus_probe); +module_platform_driver(gpio_vbus_driver); MODULE_DESCRIPTION("simple GPIO controlled OTG transceiver driver"); MODULE_AUTHOR("Philipp Zabel"); diff --git a/drivers/usb/phy/phy-omap-control.c b/drivers/usb/phy/phy-omap-control.c index a4dda8e12562..09c5ace1edd8 100644 --- a/drivers/usb/phy/phy-omap-control.c +++ b/drivers/usb/phy/phy-omap-control.c @@ -20,87 +20,77 @@ #include <linux/platform_device.h> #include <linux/slab.h> #include <linux/of.h> +#include <linux/of_device.h> #include <linux/err.h> #include <linux/io.h> #include <linux/clk.h> #include <linux/usb/omap_control_usb.h> -static struct omap_control_usb *control_usb; - -/** - * omap_get_control_dev - returns the device pointer for this control device - * - * This API should be called to get the device pointer for this control - * module device. This device pointer should be used for called other - * exported API's in this driver. - * - * To be used by PHY driver and glue driver. - */ -struct device *omap_get_control_dev(void) -{ - if (!control_usb) - return ERR_PTR(-ENODEV); - - return control_usb->dev; -} -EXPORT_SYMBOL_GPL(omap_get_control_dev); - /** - * omap_control_usb3_phy_power - power on/off the serializer using control - * module + * omap_control_usb_phy_power - power on/off the phy using control module reg * @dev: the control module device - * @on: 0 to off and 1 to on based on powering on or off the PHY - * - * usb3 PHY driver should call this API to power on or off the PHY. + * @on: 0 or 1, based on powering on or off the PHY */ -void omap_control_usb3_phy_power(struct device *dev, bool on) +void omap_control_usb_phy_power(struct device *dev, int on) { u32 val; unsigned long rate; - struct omap_control_usb *control_usb = dev_get_drvdata(dev); + struct omap_control_usb *control_usb; - if (control_usb->type != OMAP_CTRL_DEV_TYPE2) + if (IS_ERR(dev) || !dev) { + pr_err("%s: invalid device\n", __func__); return; + } - rate = clk_get_rate(control_usb->sys_clk); - rate = rate/1000000; - - val = readl(control_usb->phy_power); - - if (on) { - val &= ~(OMAP_CTRL_USB_PWRCTL_CLK_CMD_MASK | - OMAP_CTRL_USB_PWRCTL_CLK_FREQ_MASK); - val |= OMAP_CTRL_USB3_PHY_TX_RX_POWERON << - OMAP_CTRL_USB_PWRCTL_CLK_CMD_SHIFT; - val |= rate << OMAP_CTRL_USB_PWRCTL_CLK_FREQ_SHIFT; - } else { - val &= ~OMAP_CTRL_USB_PWRCTL_CLK_CMD_MASK; - val |= OMAP_CTRL_USB3_PHY_TX_RX_POWEROFF << - OMAP_CTRL_USB_PWRCTL_CLK_CMD_SHIFT; + control_usb = dev_get_drvdata(dev); + if (!control_usb) { + dev_err(dev, "%s: invalid control usb device\n", __func__); + return; } - writel(val, control_usb->phy_power); -} -EXPORT_SYMBOL_GPL(omap_control_usb3_phy_power); + if (control_usb->type == OMAP_CTRL_TYPE_OTGHS) + return; -/** - * omap_control_usb_phy_power - power on/off the phy using control module reg - * @dev: the control module device - * @on: 0 or 1, based on powering on or off the PHY - */ -void omap_control_usb_phy_power(struct device *dev, int on) -{ - u32 val; - struct omap_control_usb *control_usb = dev_get_drvdata(dev); + val = readl(control_usb->power); - val = readl(control_usb->dev_conf); + switch (control_usb->type) { + case OMAP_CTRL_TYPE_USB2: + if (on) + val &= ~OMAP_CTRL_DEV_PHY_PD; + else + val |= OMAP_CTRL_DEV_PHY_PD; + break; - if (on) - val &= ~OMAP_CTRL_DEV_PHY_PD; - else - val |= OMAP_CTRL_DEV_PHY_PD; + case OMAP_CTRL_TYPE_PIPE3: + rate = clk_get_rate(control_usb->sys_clk); + rate = rate/1000000; + + if (on) { + val &= ~(OMAP_CTRL_USB_PWRCTL_CLK_CMD_MASK | + OMAP_CTRL_USB_PWRCTL_CLK_FREQ_MASK); + val |= OMAP_CTRL_USB3_PHY_TX_RX_POWERON << + OMAP_CTRL_USB_PWRCTL_CLK_CMD_SHIFT; + val |= rate << OMAP_CTRL_USB_PWRCTL_CLK_FREQ_SHIFT; + } else { + val &= ~OMAP_CTRL_USB_PWRCTL_CLK_CMD_MASK; + val |= OMAP_CTRL_USB3_PHY_TX_RX_POWEROFF << + OMAP_CTRL_USB_PWRCTL_CLK_CMD_SHIFT; + } + break; - writel(val, control_usb->dev_conf); + case OMAP_CTRL_TYPE_DRA7USB2: + if (on) + val &= ~OMAP_CTRL_USB2_PHY_PD; + else + val |= OMAP_CTRL_USB2_PHY_PD; + break; + default: + dev_err(dev, "%s: type %d not recognized\n", + __func__, control_usb->type); + break; + } + + writel(val, control_usb->power); } EXPORT_SYMBOL_GPL(omap_control_usb_phy_power); @@ -172,11 +162,19 @@ void omap_control_usb_set_mode(struct device *dev, { struct omap_control_usb *ctrl_usb; - if (IS_ERR(dev) || control_usb->type != OMAP_CTRL_DEV_TYPE1) + if (IS_ERR(dev) || !dev) return; ctrl_usb = dev_get_drvdata(dev); + if (!ctrl_usb) { + dev_err(dev, "Invalid control usb device\n"); + return; + } + + if (ctrl_usb->type != OMAP_CTRL_TYPE_OTGHS) + return; + switch (mode) { case USB_MODE_HOST: omap_control_usb_host_mode(ctrl_usb); @@ -193,12 +191,46 @@ void omap_control_usb_set_mode(struct device *dev, } EXPORT_SYMBOL_GPL(omap_control_usb_set_mode); +#ifdef CONFIG_OF + +static const enum omap_control_usb_type otghs_data = OMAP_CTRL_TYPE_OTGHS; +static const enum omap_control_usb_type usb2_data = OMAP_CTRL_TYPE_USB2; +static const enum omap_control_usb_type pipe3_data = OMAP_CTRL_TYPE_PIPE3; +static const enum omap_control_usb_type dra7usb2_data = OMAP_CTRL_TYPE_DRA7USB2; + +static const struct of_device_id omap_control_usb_id_table[] = { + { + .compatible = "ti,control-phy-otghs", + .data = &otghs_data, + }, + { + .compatible = "ti,control-phy-usb2", + .data = &usb2_data, + }, + { + .compatible = "ti,control-phy-pipe3", + .data = &pipe3_data, + }, + { + .compatible = "ti,control-phy-dra7usb2", + .data = &dra7usb2_data, + }, + {}, +}; +MODULE_DEVICE_TABLE(of, omap_control_usb_id_table); +#endif + + static int omap_control_usb_probe(struct platform_device *pdev) { struct resource *res; - struct device_node *np = pdev->dev.of_node; - struct omap_control_usb_platform_data *pdata = - dev_get_platdata(&pdev->dev); + const struct of_device_id *of_id; + struct omap_control_usb *control_usb; + + of_id = of_match_device(of_match_ptr(omap_control_usb_id_table), + &pdev->dev); + if (!of_id) + return -EINVAL; control_usb = devm_kzalloc(&pdev->dev, sizeof(*control_usb), GFP_KERNEL); @@ -207,40 +239,27 @@ static int omap_control_usb_probe(struct platform_device *pdev) return -ENOMEM; } - if (np) { - of_property_read_u32(np, "ti,type", &control_usb->type); - } else if (pdata) { - control_usb->type = pdata->type; - } else { - dev_err(&pdev->dev, "no pdata present\n"); - return -EINVAL; - } - - control_usb->dev = &pdev->dev; - - res = platform_get_resource_byname(pdev, IORESOURCE_MEM, - "control_dev_conf"); - control_usb->dev_conf = devm_ioremap_resource(&pdev->dev, res); - if (IS_ERR(control_usb->dev_conf)) - return PTR_ERR(control_usb->dev_conf); + control_usb->dev = &pdev->dev; + control_usb->type = *(enum omap_control_usb_type *)of_id->data; - if (control_usb->type == OMAP_CTRL_DEV_TYPE1) { + if (control_usb->type == OMAP_CTRL_TYPE_OTGHS) { res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "otghs_control"); control_usb->otghs_control = devm_ioremap_resource( &pdev->dev, res); if (IS_ERR(control_usb->otghs_control)) return PTR_ERR(control_usb->otghs_control); - } - - if (control_usb->type == OMAP_CTRL_DEV_TYPE2) { + } else { res = platform_get_resource_byname(pdev, IORESOURCE_MEM, - "phy_power_usb"); - control_usb->phy_power = devm_ioremap_resource( - &pdev->dev, res); - if (IS_ERR(control_usb->phy_power)) - return PTR_ERR(control_usb->phy_power); + "power"); + control_usb->power = devm_ioremap_resource(&pdev->dev, res); + if (IS_ERR(control_usb->power)) { + dev_err(&pdev->dev, "Couldn't get power register\n"); + return PTR_ERR(control_usb->power); + } + } + if (control_usb->type == OMAP_CTRL_TYPE_PIPE3) { control_usb->sys_clk = devm_clk_get(control_usb->dev, "sys_clkin"); if (IS_ERR(control_usb->sys_clk)) { @@ -249,20 +268,11 @@ static int omap_control_usb_probe(struct platform_device *pdev) } } - dev_set_drvdata(control_usb->dev, control_usb); return 0; } -#ifdef CONFIG_OF -static const struct of_device_id omap_control_usb_id_table[] = { - { .compatible = "ti,omap-control-usb" }, - {} -}; -MODULE_DEVICE_TABLE(of, omap_control_usb_id_table); -#endif - static struct platform_driver omap_control_usb_driver = { .probe = omap_control_usb_probe, .driver = { diff --git a/drivers/usb/phy/phy-omap-usb2.c b/drivers/usb/phy/phy-omap-usb2.c deleted file mode 100644 index d266861d24f7..000000000000 --- a/drivers/usb/phy/phy-omap-usb2.c +++ /dev/null @@ -1,272 +0,0 @@ -/* - * omap-usb2.c - USB PHY, talking to musb controller in OMAP. - * - * Copyright (C) 2012 Texas Instruments Incorporated - http://www.ti.com - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * Author: Kishon Vijay Abraham I <kishon@ti.com> - * - * 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/module.h> -#include <linux/platform_device.h> -#include <linux/slab.h> -#include <linux/of.h> -#include <linux/io.h> -#include <linux/usb/omap_usb.h> -#include <linux/usb/phy_companion.h> -#include <linux/clk.h> -#include <linux/err.h> -#include <linux/pm_runtime.h> -#include <linux/delay.h> -#include <linux/usb/omap_control_usb.h> - -/** - * omap_usb2_set_comparator - links the comparator present in the sytem with - * this phy - * @comparator - the companion phy(comparator) for this phy - * - * The phy companion driver should call this API passing the phy_companion - * filled with set_vbus and start_srp to be used by usb phy. - * - * For use by phy companion driver - */ -int omap_usb2_set_comparator(struct phy_companion *comparator) -{ - struct omap_usb *phy; - struct usb_phy *x = usb_get_phy(USB_PHY_TYPE_USB2); - - if (IS_ERR(x)) - return -ENODEV; - - phy = phy_to_omapusb(x); - phy->comparator = comparator; - return 0; -} -EXPORT_SYMBOL_GPL(omap_usb2_set_comparator); - -static int omap_usb_set_vbus(struct usb_otg *otg, bool enabled) -{ - struct omap_usb *phy = phy_to_omapusb(otg->phy); - - if (!phy->comparator) - return -ENODEV; - - return phy->comparator->set_vbus(phy->comparator, enabled); -} - -static int omap_usb_start_srp(struct usb_otg *otg) -{ - struct omap_usb *phy = phy_to_omapusb(otg->phy); - - if (!phy->comparator) - return -ENODEV; - - return phy->comparator->start_srp(phy->comparator); -} - -static int omap_usb_set_host(struct usb_otg *otg, struct usb_bus *host) -{ - struct usb_phy *phy = otg->phy; - - otg->host = host; - if (!host) - phy->state = OTG_STATE_UNDEFINED; - - return 0; -} - -static int omap_usb_set_peripheral(struct usb_otg *otg, - struct usb_gadget *gadget) -{ - struct usb_phy *phy = otg->phy; - - otg->gadget = gadget; - if (!gadget) - phy->state = OTG_STATE_UNDEFINED; - - return 0; -} - -static int omap_usb2_suspend(struct usb_phy *x, int suspend) -{ - struct omap_usb *phy = phy_to_omapusb(x); - int ret; - - if (suspend && !phy->is_suspended) { - omap_control_usb_phy_power(phy->control_dev, 0); - pm_runtime_put_sync(phy->dev); - phy->is_suspended = 1; - } else if (!suspend && phy->is_suspended) { - ret = pm_runtime_get_sync(phy->dev); - if (ret < 0) { - dev_err(phy->dev, "get_sync failed with err %d\n", ret); - return ret; - } - omap_control_usb_phy_power(phy->control_dev, 1); - phy->is_suspended = 0; - } - - return 0; -} - -static int omap_usb2_probe(struct platform_device *pdev) -{ - struct omap_usb *phy; - struct usb_otg *otg; - - phy = devm_kzalloc(&pdev->dev, sizeof(*phy), GFP_KERNEL); - if (!phy) { - dev_err(&pdev->dev, "unable to allocate memory for USB2 PHY\n"); - return -ENOMEM; - } - - otg = devm_kzalloc(&pdev->dev, sizeof(*otg), GFP_KERNEL); - if (!otg) { - dev_err(&pdev->dev, "unable to allocate memory for USB OTG\n"); - return -ENOMEM; - } - - phy->dev = &pdev->dev; - - phy->phy.dev = phy->dev; - phy->phy.label = "omap-usb2"; - phy->phy.set_suspend = omap_usb2_suspend; - phy->phy.otg = otg; - phy->phy.type = USB_PHY_TYPE_USB2; - - phy->control_dev = omap_get_control_dev(); - if (IS_ERR(phy->control_dev)) { - dev_dbg(&pdev->dev, "Failed to get control device\n"); - return -ENODEV; - } - - phy->is_suspended = 1; - omap_control_usb_phy_power(phy->control_dev, 0); - - otg->set_host = omap_usb_set_host; - otg->set_peripheral = omap_usb_set_peripheral; - otg->set_vbus = omap_usb_set_vbus; - otg->start_srp = omap_usb_start_srp; - otg->phy = &phy->phy; - - phy->wkupclk = devm_clk_get(phy->dev, "usb_phy_cm_clk32k"); - if (IS_ERR(phy->wkupclk)) { - dev_err(&pdev->dev, "unable to get usb_phy_cm_clk32k\n"); - return PTR_ERR(phy->wkupclk); - } - clk_prepare(phy->wkupclk); - - phy->optclk = devm_clk_get(phy->dev, "usb_otg_ss_refclk960m"); - if (IS_ERR(phy->optclk)) - dev_vdbg(&pdev->dev, "unable to get refclk960m\n"); - else - clk_prepare(phy->optclk); - - usb_add_phy_dev(&phy->phy); - - platform_set_drvdata(pdev, phy); - - pm_runtime_enable(phy->dev); - - return 0; -} - -static int omap_usb2_remove(struct platform_device *pdev) -{ - struct omap_usb *phy = platform_get_drvdata(pdev); - - clk_unprepare(phy->wkupclk); - if (!IS_ERR(phy->optclk)) - clk_unprepare(phy->optclk); - usb_remove_phy(&phy->phy); - - return 0; -} - -#ifdef CONFIG_PM_RUNTIME - -static int omap_usb2_runtime_suspend(struct device *dev) -{ - struct platform_device *pdev = to_platform_device(dev); - struct omap_usb *phy = platform_get_drvdata(pdev); - - clk_disable(phy->wkupclk); - if (!IS_ERR(phy->optclk)) - clk_disable(phy->optclk); - - return 0; -} - -static int omap_usb2_runtime_resume(struct device *dev) -{ - struct platform_device *pdev = to_platform_device(dev); - struct omap_usb *phy = platform_get_drvdata(pdev); - int ret; - - ret = clk_enable(phy->wkupclk); - if (ret < 0) { - dev_err(phy->dev, "Failed to enable wkupclk %d\n", ret); - goto err0; - } - - if (!IS_ERR(phy->optclk)) { - ret = clk_enable(phy->optclk); - if (ret < 0) { - dev_err(phy->dev, "Failed to enable optclk %d\n", ret); - goto err1; - } - } - - return 0; - -err1: - clk_disable(phy->wkupclk); - -err0: - return ret; -} - -static const struct dev_pm_ops omap_usb2_pm_ops = { - SET_RUNTIME_PM_OPS(omap_usb2_runtime_suspend, omap_usb2_runtime_resume, - NULL) -}; - -#define DEV_PM_OPS (&omap_usb2_pm_ops) -#else -#define DEV_PM_OPS NULL -#endif - -#ifdef CONFIG_OF -static const struct of_device_id omap_usb2_id_table[] = { - { .compatible = "ti,omap-usb2" }, - {} -}; -MODULE_DEVICE_TABLE(of, omap_usb2_id_table); -#endif - -static struct platform_driver omap_usb2_driver = { - .probe = omap_usb2_probe, - .remove = omap_usb2_remove, - .driver = { - .name = "omap-usb2", - .owner = THIS_MODULE, - .pm = DEV_PM_OPS, - .of_match_table = of_match_ptr(omap_usb2_id_table), - }, -}; - -module_platform_driver(omap_usb2_driver); - -MODULE_ALIAS("platform: omap_usb2"); -MODULE_AUTHOR("Texas Instruments Inc."); -MODULE_DESCRIPTION("OMAP USB2 phy driver"); -MODULE_LICENSE("GPL v2"); diff --git a/drivers/usb/phy/phy-omap-usb3.c b/drivers/usb/phy/phy-omap-usb3.c index 4e8a0405f956..0c6ba29bdddd 100644 --- a/drivers/usb/phy/phy-omap-usb3.c +++ b/drivers/usb/phy/phy-omap-usb3.c @@ -26,6 +26,7 @@ #include <linux/pm_runtime.h> #include <linux/delay.h> #include <linux/usb/omap_control_usb.h> +#include <linux/of_platform.h> #define PLL_STATUS 0x00000004 #define PLL_GO 0x00000008 @@ -100,7 +101,7 @@ static int omap_usb3_suspend(struct usb_phy *x, int suspend) udelay(1); } while (--timeout); - omap_control_usb3_phy_power(phy->control_dev, 0); + omap_control_usb_phy_power(phy->control_dev, 0); phy->is_suspended = 1; } else if (!suspend && phy->is_suspended) { @@ -189,15 +190,21 @@ static int omap_usb3_init(struct usb_phy *x) if (ret) return ret; - omap_control_usb3_phy_power(phy->control_dev, 1); + omap_control_usb_phy_power(phy->control_dev, 1); return 0; } static int omap_usb3_probe(struct platform_device *pdev) { - struct omap_usb *phy; - struct resource *res; + struct omap_usb *phy; + struct resource *res; + struct device_node *node = pdev->dev.of_node; + struct device_node *control_node; + struct platform_device *control_pdev; + + if (!node) + return -EINVAL; phy = devm_kzalloc(&pdev->dev, sizeof(*phy), GFP_KERNEL); if (!phy) { @@ -239,13 +246,20 @@ static int omap_usb3_probe(struct platform_device *pdev) return -EINVAL; } - phy->control_dev = omap_get_control_dev(); - if (IS_ERR(phy->control_dev)) { - dev_dbg(&pdev->dev, "Failed to get control device\n"); - return -ENODEV; + control_node = of_parse_phandle(node, "ctrl-module", 0); + if (!control_node) { + dev_err(&pdev->dev, "Failed to get control device phandle\n"); + return -EINVAL; } + control_pdev = of_find_device_by_node(control_node); + if (!control_pdev) { + dev_err(&pdev->dev, "Failed to get control device\n"); + return -EINVAL; + } + + phy->control_dev = &control_pdev->dev; - omap_control_usb3_phy_power(phy->control_dev, 0); + omap_control_usb_phy_power(phy->control_dev, 0); usb_add_phy_dev(&phy->phy); platform_set_drvdata(pdev, phy); diff --git a/drivers/usb/phy/phy-twl4030-usb.c b/drivers/usb/phy/phy-twl4030-usb.c deleted file mode 100644 index 5baa9c7267f4..000000000000 --- a/drivers/usb/phy/phy-twl4030-usb.c +++ /dev/null @@ -1,796 +0,0 @@ -/* - * twl4030_usb - TWL4030 USB transceiver, talking to OMAP OTG controller - * - * Copyright (C) 2004-2007 Texas Instruments - * Copyright (C) 2008 Nokia Corporation - * Contact: Felipe Balbi <felipe.balbi@nokia.com> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * 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., 675 Mass Ave, Cambridge, MA 02139, USA. - * - * Current status: - * - HS USB ULPI mode works. - * - 3-pin mode support may be added in future. - */ - -#include <linux/module.h> -#include <linux/init.h> -#include <linux/interrupt.h> -#include <linux/platform_device.h> -#include <linux/spinlock.h> -#include <linux/workqueue.h> -#include <linux/io.h> -#include <linux/delay.h> -#include <linux/usb/otg.h> -#include <linux/usb/musb-omap.h> -#include <linux/usb/ulpi.h> -#include <linux/i2c/twl.h> -#include <linux/regulator/consumer.h> -#include <linux/err.h> -#include <linux/slab.h> - -/* Register defines */ - -#define MCPC_CTRL 0x30 -#define MCPC_CTRL_RTSOL (1 << 7) -#define MCPC_CTRL_EXTSWR (1 << 6) -#define MCPC_CTRL_EXTSWC (1 << 5) -#define MCPC_CTRL_VOICESW (1 << 4) -#define MCPC_CTRL_OUT64K (1 << 3) -#define MCPC_CTRL_RTSCTSSW (1 << 2) -#define MCPC_CTRL_HS_UART (1 << 0) - -#define MCPC_IO_CTRL 0x33 -#define MCPC_IO_CTRL_MICBIASEN (1 << 5) -#define MCPC_IO_CTRL_CTS_NPU (1 << 4) -#define MCPC_IO_CTRL_RXD_PU (1 << 3) -#define MCPC_IO_CTRL_TXDTYP (1 << 2) -#define MCPC_IO_CTRL_CTSTYP (1 << 1) -#define MCPC_IO_CTRL_RTSTYP (1 << 0) - -#define MCPC_CTRL2 0x36 -#define MCPC_CTRL2_MCPC_CK_EN (1 << 0) - -#define OTHER_FUNC_CTRL 0x80 -#define OTHER_FUNC_CTRL_BDIS_ACON_EN (1 << 4) -#define OTHER_FUNC_CTRL_FIVEWIRE_MODE (1 << 2) - -#define OTHER_IFC_CTRL 0x83 -#define OTHER_IFC_CTRL_OE_INT_EN (1 << 6) -#define OTHER_IFC_CTRL_CEA2011_MODE (1 << 5) -#define OTHER_IFC_CTRL_FSLSSERIALMODE_4PIN (1 << 4) -#define OTHER_IFC_CTRL_HIZ_ULPI_60MHZ_OUT (1 << 3) -#define OTHER_IFC_CTRL_HIZ_ULPI (1 << 2) -#define OTHER_IFC_CTRL_ALT_INT_REROUTE (1 << 0) - -#define OTHER_INT_EN_RISE 0x86 -#define OTHER_INT_EN_FALL 0x89 -#define OTHER_INT_STS 0x8C -#define OTHER_INT_LATCH 0x8D -#define OTHER_INT_VB_SESS_VLD (1 << 7) -#define OTHER_INT_DM_HI (1 << 6) /* not valid for "latch" reg */ -#define OTHER_INT_DP_HI (1 << 5) /* not valid for "latch" reg */ -#define OTHER_INT_BDIS_ACON (1 << 3) /* not valid for "fall" regs */ -#define OTHER_INT_MANU (1 << 1) -#define OTHER_INT_ABNORMAL_STRESS (1 << 0) - -#define ID_STATUS 0x96 -#define ID_RES_FLOAT (1 << 4) -#define ID_RES_440K (1 << 3) -#define ID_RES_200K (1 << 2) -#define ID_RES_102K (1 << 1) -#define ID_RES_GND (1 << 0) - -#define POWER_CTRL 0xAC -#define POWER_CTRL_OTG_ENAB (1 << 5) - -#define OTHER_IFC_CTRL2 0xAF -#define OTHER_IFC_CTRL2_ULPI_STP_LOW (1 << 4) -#define OTHER_IFC_CTRL2_ULPI_TXEN_POL (1 << 3) -#define OTHER_IFC_CTRL2_ULPI_4PIN_2430 (1 << 2) -#define OTHER_IFC_CTRL2_USB_INT_OUTSEL_MASK (3 << 0) /* bits 0 and 1 */ -#define OTHER_IFC_CTRL2_USB_INT_OUTSEL_INT1N (0 << 0) -#define OTHER_IFC_CTRL2_USB_INT_OUTSEL_INT2N (1 << 0) - -#define REG_CTRL_EN 0xB2 -#define REG_CTRL_ERROR 0xB5 -#define ULPI_I2C_CONFLICT_INTEN (1 << 0) - -#define OTHER_FUNC_CTRL2 0xB8 -#define OTHER_FUNC_CTRL2_VBAT_TIMER_EN (1 << 0) - -/* following registers do not have separate _clr and _set registers */ -#define VBUS_DEBOUNCE 0xC0 -#define ID_DEBOUNCE 0xC1 -#define VBAT_TIMER 0xD3 -#define PHY_PWR_CTRL 0xFD -#define PHY_PWR_PHYPWD (1 << 0) -#define PHY_CLK_CTRL 0xFE -#define PHY_CLK_CTRL_CLOCKGATING_EN (1 << 2) -#define PHY_CLK_CTRL_CLK32K_EN (1 << 1) -#define REQ_PHY_DPLL_CLK (1 << 0) -#define PHY_CLK_CTRL_STS 0xFF -#define PHY_DPLL_CLK (1 << 0) - -/* In module TWL_MODULE_PM_MASTER */ -#define STS_HW_CONDITIONS 0x0F - -/* In module TWL_MODULE_PM_RECEIVER */ -#define VUSB_DEDICATED1 0x7D -#define VUSB_DEDICATED2 0x7E -#define VUSB1V5_DEV_GRP 0x71 -#define VUSB1V5_TYPE 0x72 -#define VUSB1V5_REMAP 0x73 -#define VUSB1V8_DEV_GRP 0x74 -#define VUSB1V8_TYPE 0x75 -#define VUSB1V8_REMAP 0x76 -#define VUSB3V1_DEV_GRP 0x77 -#define VUSB3V1_TYPE 0x78 -#define VUSB3V1_REMAP 0x79 - -/* In module TWL4030_MODULE_INTBR */ -#define PMBR1 0x0D -#define GPIO_USB_4PIN_ULPI_2430C (3 << 0) - -struct twl4030_usb { - struct usb_phy phy; - struct device *dev; - - /* TWL4030 internal USB regulator supplies */ - struct regulator *usb1v5; - struct regulator *usb1v8; - struct regulator *usb3v1; - - /* for vbus reporting with irqs disabled */ - spinlock_t lock; - - /* pin configuration */ - enum twl4030_usb_mode usb_mode; - - int irq; - enum omap_musb_vbus_id_status linkstat; - bool vbus_supplied; - u8 asleep; - bool irq_enabled; - - struct delayed_work id_workaround_work; -}; - -/* internal define on top of container_of */ -#define phy_to_twl(x) container_of((x), struct twl4030_usb, phy) - -/*-------------------------------------------------------------------------*/ - -static int twl4030_i2c_write_u8_verify(struct twl4030_usb *twl, - u8 module, u8 data, u8 address) -{ - u8 check; - - if ((twl_i2c_write_u8(module, data, address) >= 0) && - (twl_i2c_read_u8(module, &check, address) >= 0) && - (check == data)) - return 0; - dev_dbg(twl->dev, "Write%d[%d,0x%x] wrote %02x but read %02x\n", - 1, module, address, check, data); - - /* Failed once: Try again */ - if ((twl_i2c_write_u8(module, data, address) >= 0) && - (twl_i2c_read_u8(module, &check, address) >= 0) && - (check == data)) - return 0; - dev_dbg(twl->dev, "Write%d[%d,0x%x] wrote %02x but read %02x\n", - 2, module, address, check, data); - - /* Failed again: Return error */ - return -EBUSY; -} - -#define twl4030_usb_write_verify(twl, address, data) \ - twl4030_i2c_write_u8_verify(twl, TWL_MODULE_USB, (data), (address)) - -static inline int twl4030_usb_write(struct twl4030_usb *twl, - u8 address, u8 data) -{ - int ret = 0; - - ret = twl_i2c_write_u8(TWL_MODULE_USB, data, address); - if (ret < 0) - dev_dbg(twl->dev, - "TWL4030:USB:Write[0x%x] Error %d\n", address, ret); - return ret; -} - -static inline int twl4030_readb(struct twl4030_usb *twl, u8 module, u8 address) -{ - u8 data; - int ret = 0; - - ret = twl_i2c_read_u8(module, &data, address); - if (ret >= 0) - ret = data; - else - dev_dbg(twl->dev, - "TWL4030:readb[0x%x,0x%x] Error %d\n", - module, address, ret); - - return ret; -} - -static inline int twl4030_usb_read(struct twl4030_usb *twl, u8 address) -{ - return twl4030_readb(twl, TWL_MODULE_USB, address); -} - -/*-------------------------------------------------------------------------*/ - -static inline int -twl4030_usb_set_bits(struct twl4030_usb *twl, u8 reg, u8 bits) -{ - return twl4030_usb_write(twl, ULPI_SET(reg), bits); -} - -static inline int -twl4030_usb_clear_bits(struct twl4030_usb *twl, u8 reg, u8 bits) -{ - return twl4030_usb_write(twl, ULPI_CLR(reg), bits); -} - -/*-------------------------------------------------------------------------*/ - -static bool twl4030_is_driving_vbus(struct twl4030_usb *twl) -{ - int ret; - - ret = twl4030_usb_read(twl, PHY_CLK_CTRL_STS); - if (ret < 0 || !(ret & PHY_DPLL_CLK)) - /* - * if clocks are off, registers are not updated, - * but we can assume we don't drive VBUS in this case - */ - return false; - - ret = twl4030_usb_read(twl, ULPI_OTG_CTRL); - if (ret < 0) - return false; - - return (ret & (ULPI_OTG_DRVVBUS | ULPI_OTG_CHRGVBUS)) ? true : false; -} - -static enum omap_musb_vbus_id_status - twl4030_usb_linkstat(struct twl4030_usb *twl) -{ - int status; - enum omap_musb_vbus_id_status linkstat = OMAP_MUSB_UNKNOWN; - - twl->vbus_supplied = false; - - /* - * For ID/VBUS sensing, see manual section 15.4.8 ... - * except when using only battery backup power, two - * comparators produce VBUS_PRES and ID_PRES signals, - * which don't match docs elsewhere. But ... BIT(7) - * and BIT(2) of STS_HW_CONDITIONS, respectively, do - * seem to match up. If either is true the USB_PRES - * signal is active, the OTG module is activated, and - * its interrupt may be raised (may wake the system). - */ - status = twl4030_readb(twl, TWL_MODULE_PM_MASTER, STS_HW_CONDITIONS); - if (status < 0) - dev_err(twl->dev, "USB link status err %d\n", status); - else if (status & (BIT(7) | BIT(2))) { - if (status & BIT(7)) { - if (twl4030_is_driving_vbus(twl)) - status &= ~BIT(7); - else - twl->vbus_supplied = true; - } - - if (status & BIT(2)) - linkstat = OMAP_MUSB_ID_GROUND; - else if (status & BIT(7)) - linkstat = OMAP_MUSB_VBUS_VALID; - else - linkstat = OMAP_MUSB_VBUS_OFF; - } else { - if (twl->linkstat != OMAP_MUSB_UNKNOWN) - linkstat = OMAP_MUSB_VBUS_OFF; - } - - dev_dbg(twl->dev, "HW_CONDITIONS 0x%02x/%d; link %d\n", - status, status, linkstat); - - /* REVISIT this assumes host and peripheral controllers - * are registered, and that both are active... - */ - - return linkstat; -} - -static void twl4030_usb_set_mode(struct twl4030_usb *twl, int mode) -{ - twl->usb_mode = mode; - - switch (mode) { - case T2_USB_MODE_ULPI: - twl4030_usb_clear_bits(twl, ULPI_IFC_CTRL, - ULPI_IFC_CTRL_CARKITMODE); - twl4030_usb_set_bits(twl, POWER_CTRL, POWER_CTRL_OTG_ENAB); - twl4030_usb_clear_bits(twl, ULPI_FUNC_CTRL, - ULPI_FUNC_CTRL_XCVRSEL_MASK | - ULPI_FUNC_CTRL_OPMODE_MASK); - break; - case -1: - /* FIXME: power on defaults */ - break; - default: - dev_err(twl->dev, "unsupported T2 transceiver mode %d\n", - mode); - break; - }; -} - -static void twl4030_i2c_access(struct twl4030_usb *twl, int on) -{ - unsigned long timeout; - int val = twl4030_usb_read(twl, PHY_CLK_CTRL); - - if (val >= 0) { - if (on) { - /* enable DPLL to access PHY registers over I2C */ - val |= REQ_PHY_DPLL_CLK; - WARN_ON(twl4030_usb_write_verify(twl, PHY_CLK_CTRL, - (u8)val) < 0); - - timeout = jiffies + HZ; - while (!(twl4030_usb_read(twl, PHY_CLK_CTRL_STS) & - PHY_DPLL_CLK) - && time_before(jiffies, timeout)) - udelay(10); - if (!(twl4030_usb_read(twl, PHY_CLK_CTRL_STS) & - PHY_DPLL_CLK)) - dev_err(twl->dev, "Timeout setting T2 HSUSB " - "PHY DPLL clock\n"); - } else { - /* let ULPI control the DPLL clock */ - val &= ~REQ_PHY_DPLL_CLK; - WARN_ON(twl4030_usb_write_verify(twl, PHY_CLK_CTRL, - (u8)val) < 0); - } - } -} - -static void __twl4030_phy_power(struct twl4030_usb *twl, int on) -{ - u8 pwr = twl4030_usb_read(twl, PHY_PWR_CTRL); - - if (on) - pwr &= ~PHY_PWR_PHYPWD; - else - pwr |= PHY_PWR_PHYPWD; - - WARN_ON(twl4030_usb_write_verify(twl, PHY_PWR_CTRL, pwr) < 0); -} - -static void twl4030_phy_power(struct twl4030_usb *twl, int on) -{ - int ret; - - if (on) { - ret = regulator_enable(twl->usb3v1); - if (ret) - dev_err(twl->dev, "Failed to enable usb3v1\n"); - - ret = regulator_enable(twl->usb1v8); - if (ret) - dev_err(twl->dev, "Failed to enable usb1v8\n"); - - /* - * Disabling usb3v1 regulator (= writing 0 to VUSB3V1_DEV_GRP - * in twl4030) resets the VUSB_DEDICATED2 register. This reset - * enables VUSB3V1_SLEEP bit that remaps usb3v1 ACTIVE state to - * SLEEP. We work around this by clearing the bit after usv3v1 - * is re-activated. This ensures that VUSB3V1 is really active. - */ - twl_i2c_write_u8(TWL_MODULE_PM_RECEIVER, 0, VUSB_DEDICATED2); - - ret = regulator_enable(twl->usb1v5); - if (ret) - dev_err(twl->dev, "Failed to enable usb1v5\n"); - - __twl4030_phy_power(twl, 1); - twl4030_usb_write(twl, PHY_CLK_CTRL, - twl4030_usb_read(twl, PHY_CLK_CTRL) | - (PHY_CLK_CTRL_CLOCKGATING_EN | - PHY_CLK_CTRL_CLK32K_EN)); - } else { - __twl4030_phy_power(twl, 0); - regulator_disable(twl->usb1v5); - regulator_disable(twl->usb1v8); - regulator_disable(twl->usb3v1); - } -} - -static void twl4030_phy_suspend(struct twl4030_usb *twl, int controller_off) -{ - if (twl->asleep) - return; - - twl4030_phy_power(twl, 0); - twl->asleep = 1; - dev_dbg(twl->dev, "%s\n", __func__); -} - -static void __twl4030_phy_resume(struct twl4030_usb *twl) -{ - twl4030_phy_power(twl, 1); - twl4030_i2c_access(twl, 1); - twl4030_usb_set_mode(twl, twl->usb_mode); - if (twl->usb_mode == T2_USB_MODE_ULPI) - twl4030_i2c_access(twl, 0); -} - -static void twl4030_phy_resume(struct twl4030_usb *twl) -{ - if (!twl->asleep) - return; - __twl4030_phy_resume(twl); - twl->asleep = 0; - dev_dbg(twl->dev, "%s\n", __func__); - - /* - * XXX When VBUS gets driven after musb goes to A mode, - * ID_PRES related interrupts no longer arrive, why? - * Register itself is updated fine though, so we must poll. - */ - if (twl->linkstat == OMAP_MUSB_ID_GROUND) { - cancel_delayed_work(&twl->id_workaround_work); - schedule_delayed_work(&twl->id_workaround_work, HZ); - } -} - -static int twl4030_usb_ldo_init(struct twl4030_usb *twl) -{ - /* Enable writing to power configuration registers */ - twl_i2c_write_u8(TWL_MODULE_PM_MASTER, TWL4030_PM_MASTER_KEY_CFG1, - TWL4030_PM_MASTER_PROTECT_KEY); - - twl_i2c_write_u8(TWL_MODULE_PM_MASTER, TWL4030_PM_MASTER_KEY_CFG2, - TWL4030_PM_MASTER_PROTECT_KEY); - - /* Keep VUSB3V1 LDO in sleep state until VBUS/ID change detected*/ - /*twl_i2c_write_u8(TWL_MODULE_PM_RECEIVER, 0, VUSB_DEDICATED2);*/ - - /* input to VUSB3V1 LDO is from VBAT, not VBUS */ - twl_i2c_write_u8(TWL_MODULE_PM_RECEIVER, 0x14, VUSB_DEDICATED1); - - /* Initialize 3.1V regulator */ - twl_i2c_write_u8(TWL_MODULE_PM_RECEIVER, 0, VUSB3V1_DEV_GRP); - - twl->usb3v1 = devm_regulator_get(twl->dev, "usb3v1"); - if (IS_ERR(twl->usb3v1)) - return -ENODEV; - - twl_i2c_write_u8(TWL_MODULE_PM_RECEIVER, 0, VUSB3V1_TYPE); - - /* Initialize 1.5V regulator */ - twl_i2c_write_u8(TWL_MODULE_PM_RECEIVER, 0, VUSB1V5_DEV_GRP); - - twl->usb1v5 = devm_regulator_get(twl->dev, "usb1v5"); - if (IS_ERR(twl->usb1v5)) - return -ENODEV; - - twl_i2c_write_u8(TWL_MODULE_PM_RECEIVER, 0, VUSB1V5_TYPE); - - /* Initialize 1.8V regulator */ - twl_i2c_write_u8(TWL_MODULE_PM_RECEIVER, 0, VUSB1V8_DEV_GRP); - - twl->usb1v8 = devm_regulator_get(twl->dev, "usb1v8"); - if (IS_ERR(twl->usb1v8)) - return -ENODEV; - - twl_i2c_write_u8(TWL_MODULE_PM_RECEIVER, 0, VUSB1V8_TYPE); - - /* disable access to power configuration registers */ - twl_i2c_write_u8(TWL_MODULE_PM_MASTER, 0, - TWL4030_PM_MASTER_PROTECT_KEY); - - return 0; -} - -static ssize_t twl4030_usb_vbus_show(struct device *dev, - struct device_attribute *attr, char *buf) -{ - struct twl4030_usb *twl = dev_get_drvdata(dev); - unsigned long flags; - int ret = -EINVAL; - - spin_lock_irqsave(&twl->lock, flags); - ret = sprintf(buf, "%s\n", - twl->vbus_supplied ? "on" : "off"); - spin_unlock_irqrestore(&twl->lock, flags); - - return ret; -} -static DEVICE_ATTR(vbus, 0444, twl4030_usb_vbus_show, NULL); - -static irqreturn_t twl4030_usb_irq(int irq, void *_twl) -{ - struct twl4030_usb *twl = _twl; - enum omap_musb_vbus_id_status status; - bool status_changed = false; - - status = twl4030_usb_linkstat(twl); - - spin_lock_irq(&twl->lock); - if (status >= 0 && status != twl->linkstat) { - twl->linkstat = status; - status_changed = true; - } - spin_unlock_irq(&twl->lock); - - if (status_changed) { - /* FIXME add a set_power() method so that B-devices can - * configure the charger appropriately. It's not always - * correct to consume VBUS power, and how much current to - * consume is a function of the USB configuration chosen - * by the host. - * - * REVISIT usb_gadget_vbus_connect(...) as needed, ditto - * its disconnect() sibling, when changing to/from the - * USB_LINK_VBUS state. musb_hdrc won't care until it - * starts to handle softconnect right. - */ - omap_musb_mailbox(status); - } - sysfs_notify(&twl->dev->kobj, NULL, "vbus"); - - return IRQ_HANDLED; -} - -static void twl4030_id_workaround_work(struct work_struct *work) -{ - struct twl4030_usb *twl = container_of(work, struct twl4030_usb, - id_workaround_work.work); - enum omap_musb_vbus_id_status status; - bool status_changed = false; - - status = twl4030_usb_linkstat(twl); - - spin_lock_irq(&twl->lock); - if (status >= 0 && status != twl->linkstat) { - twl->linkstat = status; - status_changed = true; - } - spin_unlock_irq(&twl->lock); - - if (status_changed) { - dev_dbg(twl->dev, "handle missing status change to %d\n", - status); - omap_musb_mailbox(status); - } - - /* don't schedule during sleep - irq works right then */ - if (status == OMAP_MUSB_ID_GROUND && !twl->asleep) { - cancel_delayed_work(&twl->id_workaround_work); - schedule_delayed_work(&twl->id_workaround_work, HZ); - } -} - -static int twl4030_usb_phy_init(struct usb_phy *phy) -{ - struct twl4030_usb *twl = phy_to_twl(phy); - enum omap_musb_vbus_id_status status; - - /* - * Start in sleep state, we'll get called through set_suspend() - * callback when musb is runtime resumed and it's time to start. - */ - __twl4030_phy_power(twl, 0); - twl->asleep = 1; - - status = twl4030_usb_linkstat(twl); - twl->linkstat = status; - - if (status == OMAP_MUSB_ID_GROUND || status == OMAP_MUSB_VBUS_VALID) - omap_musb_mailbox(twl->linkstat); - - sysfs_notify(&twl->dev->kobj, NULL, "vbus"); - return 0; -} - -static int twl4030_set_suspend(struct usb_phy *x, int suspend) -{ - struct twl4030_usb *twl = phy_to_twl(x); - - if (suspend) - twl4030_phy_suspend(twl, 1); - else - twl4030_phy_resume(twl); - - return 0; -} - -static int twl4030_set_peripheral(struct usb_otg *otg, - struct usb_gadget *gadget) -{ - if (!otg) - return -ENODEV; - - otg->gadget = gadget; - if (!gadget) - otg->phy->state = OTG_STATE_UNDEFINED; - - return 0; -} - -static int twl4030_set_host(struct usb_otg *otg, struct usb_bus *host) -{ - if (!otg) - return -ENODEV; - - otg->host = host; - if (!host) - otg->phy->state = OTG_STATE_UNDEFINED; - - return 0; -} - -static int twl4030_usb_probe(struct platform_device *pdev) -{ - struct twl4030_usb_data *pdata = dev_get_platdata(&pdev->dev); - struct twl4030_usb *twl; - int status, err; - struct usb_otg *otg; - struct device_node *np = pdev->dev.of_node; - - twl = devm_kzalloc(&pdev->dev, sizeof *twl, GFP_KERNEL); - if (!twl) - return -ENOMEM; - - if (np) - of_property_read_u32(np, "usb_mode", - (enum twl4030_usb_mode *)&twl->usb_mode); - else if (pdata) - twl->usb_mode = pdata->usb_mode; - else { - dev_err(&pdev->dev, "twl4030 initialized without pdata\n"); - return -EINVAL; - } - - otg = devm_kzalloc(&pdev->dev, sizeof *otg, GFP_KERNEL); - if (!otg) - return -ENOMEM; - - twl->dev = &pdev->dev; - twl->irq = platform_get_irq(pdev, 0); - twl->vbus_supplied = false; - twl->asleep = 1; - twl->linkstat = OMAP_MUSB_UNKNOWN; - - twl->phy.dev = twl->dev; - twl->phy.label = "twl4030"; - twl->phy.otg = otg; - twl->phy.type = USB_PHY_TYPE_USB2; - twl->phy.set_suspend = twl4030_set_suspend; - twl->phy.init = twl4030_usb_phy_init; - - otg->phy = &twl->phy; - otg->set_host = twl4030_set_host; - otg->set_peripheral = twl4030_set_peripheral; - - /* init spinlock for workqueue */ - spin_lock_init(&twl->lock); - - INIT_DELAYED_WORK(&twl->id_workaround_work, twl4030_id_workaround_work); - - err = twl4030_usb_ldo_init(twl); - if (err) { - dev_err(&pdev->dev, "ldo init failed\n"); - return err; - } - usb_add_phy_dev(&twl->phy); - - platform_set_drvdata(pdev, twl); - if (device_create_file(&pdev->dev, &dev_attr_vbus)) - dev_warn(&pdev->dev, "could not create sysfs file\n"); - - ATOMIC_INIT_NOTIFIER_HEAD(&twl->phy.notifier); - - /* Our job is to use irqs and status from the power module - * to keep the transceiver disabled when nothing's connected. - * - * FIXME we actually shouldn't start enabling it until the - * USB controller drivers have said they're ready, by calling - * set_host() and/or set_peripheral() ... OTG_capable boards - * need both handles, otherwise just one suffices. - */ - twl->irq_enabled = true; - status = devm_request_threaded_irq(twl->dev, twl->irq, NULL, - twl4030_usb_irq, IRQF_TRIGGER_FALLING | - IRQF_TRIGGER_RISING | IRQF_ONESHOT, "twl4030_usb", twl); - if (status < 0) { - dev_dbg(&pdev->dev, "can't get IRQ %d, err %d\n", - twl->irq, status); - return status; - } - - dev_info(&pdev->dev, "Initialized TWL4030 USB module\n"); - return 0; -} - -static int twl4030_usb_remove(struct platform_device *pdev) -{ - struct twl4030_usb *twl = platform_get_drvdata(pdev); - int val; - - cancel_delayed_work(&twl->id_workaround_work); - device_remove_file(twl->dev, &dev_attr_vbus); - - /* set transceiver mode to power on defaults */ - twl4030_usb_set_mode(twl, -1); - - /* autogate 60MHz ULPI clock, - * clear dpll clock request for i2c access, - * disable 32KHz - */ - val = twl4030_usb_read(twl, PHY_CLK_CTRL); - if (val >= 0) { - val |= PHY_CLK_CTRL_CLOCKGATING_EN; - val &= ~(PHY_CLK_CTRL_CLK32K_EN | REQ_PHY_DPLL_CLK); - twl4030_usb_write(twl, PHY_CLK_CTRL, (u8)val); - } - - /* disable complete OTG block */ - twl4030_usb_clear_bits(twl, POWER_CTRL, POWER_CTRL_OTG_ENAB); - - if (!twl->asleep) - twl4030_phy_power(twl, 0); - - return 0; -} - -#ifdef CONFIG_OF -static const struct of_device_id twl4030_usb_id_table[] = { - { .compatible = "ti,twl4030-usb" }, - {} -}; -MODULE_DEVICE_TABLE(of, twl4030_usb_id_table); -#endif - -static struct platform_driver twl4030_usb_driver = { - .probe = twl4030_usb_probe, - .remove = twl4030_usb_remove, - .driver = { - .name = "twl4030_usb", - .owner = THIS_MODULE, - .of_match_table = of_match_ptr(twl4030_usb_id_table), - }, -}; - -static int __init twl4030_usb_init(void) -{ - return platform_driver_register(&twl4030_usb_driver); -} -subsys_initcall(twl4030_usb_init); - -static void __exit twl4030_usb_exit(void) -{ - platform_driver_unregister(&twl4030_usb_driver); -} -module_exit(twl4030_usb_exit); - -MODULE_ALIAS("platform:twl4030_usb"); -MODULE_AUTHOR("Texas Instruments, Inc, Nokia Corporation"); -MODULE_DESCRIPTION("TWL4030 USB transceiver driver"); -MODULE_LICENSE("GPL"); diff --git a/drivers/usb/phy/phy-ulpi-viewport.c b/drivers/usb/phy/phy-ulpi-viewport.c index 7c22a5390fc3..18bb8264b5a0 100644 --- a/drivers/usb/phy/phy-ulpi-viewport.c +++ b/drivers/usb/phy/phy-ulpi-viewport.c @@ -36,7 +36,7 @@ static int ulpi_viewport_wait(void __iomem *view, u32 mask) return 0; udelay(1); - }; + } return -ETIMEDOUT; } |