| Message ID | 1393846695-14644-4-git-send-email-kishon@ti.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
On Monday 03 March 2014 05:08 PM, Kishon Vijay Abraham I wrote: > Adapted omap-usb3 PHY driver to Generic PHY Framework and moved phy-omap-usb3 > driver in drivers/usb/phy to drivers/phy and also renamed the file to > phy-ti-pipe3 since this same driver will be used for SATA PHY and > PCIE PHY. merged 3rd, 4th and 5th patch of this series to linux-phy next. Thanks Kishon > > Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com> > --- > drivers/phy/Kconfig | 11 + > drivers/phy/Makefile | 1 + > .../phy/phy-omap-usb3.c => phy/phy-ti-pipe3.c} | 240 ++++++++++++-------- > drivers/usb/phy/Kconfig | 11 - > drivers/usb/phy/Makefile | 1 - > 5 files changed, 158 insertions(+), 106 deletions(-) > rename drivers/{usb/phy/phy-omap-usb3.c => phy/phy-ti-pipe3.c} (54%) > > diff --git a/drivers/phy/Kconfig b/drivers/phy/Kconfig > index c7a551c..e3ec7d1 100644 > --- a/drivers/phy/Kconfig > +++ b/drivers/phy/Kconfig > @@ -40,6 +40,17 @@ config OMAP_USB2 > The USB OTG controller communicates with the comparator using this > driver. > > +config TI_PIPE3 > + tristate "TI PIPE3 PHY Driver" > + depends on ARCH_OMAP2PLUS || COMPILE_TEST > + select GENERIC_PHY > + select OMAP_CONTROL_USB > + help > + Enable this to support the PIPE3 PHY that is part of TI SOCs. This > + driver takes care of all the PHY functionality apart from comparator. > + This driver interacts with the "OMAP Control PHY Driver" to power > + on/off the PHY. > + > config TWL4030_USB > tristate "TWL4030 USB Transceiver Driver" > depends on TWL4030_CORE && REGULATOR_TWL4030 && USB_MUSB_OMAP2PLUS > diff --git a/drivers/phy/Makefile b/drivers/phy/Makefile > index b57c253..32e3f94 100644 > --- a/drivers/phy/Makefile > +++ b/drivers/phy/Makefile > @@ -8,4 +8,5 @@ obj-$(CONFIG_PHY_EXYNOS_DP_VIDEO) += phy-exynos-dp-video.o > obj-$(CONFIG_PHY_EXYNOS_MIPI_VIDEO) += phy-exynos-mipi-video.o > obj-$(CONFIG_PHY_MVEBU_SATA) += phy-mvebu-sata.o > obj-$(CONFIG_OMAP_USB2) += phy-omap-usb2.o > +obj-$(CONFIG_TI_PIPE3) += phy-ti-pipe3.o > obj-$(CONFIG_TWL4030_USB) += phy-twl4030-usb.o > diff --git a/drivers/usb/phy/phy-omap-usb3.c b/drivers/phy/phy-ti-pipe3.c > similarity index 54% > rename from drivers/usb/phy/phy-omap-usb3.c > rename to drivers/phy/phy-ti-pipe3.c > index 0c6ba29..67b189d 100644 > --- a/drivers/usb/phy/phy-omap-usb3.c > +++ b/drivers/phy/phy-ti-pipe3.c > @@ -1,5 +1,5 @@ > /* > - * omap-usb3 - USB PHY, talking to dwc3 controller in OMAP. > + * phy-ti-pipe3 - PIPE3 PHY driver. > * > * Copyright (C) 2013 Texas Instruments Incorporated - http://www.ti.com > * This program is free software; you can redistribute it and/or modify > @@ -19,10 +19,11 @@ > #include <linux/module.h> > #include <linux/platform_device.h> > #include <linux/slab.h> > -#include <linux/usb/omap_usb.h> > +#include <linux/phy/phy.h> > #include <linux/of.h> > #include <linux/clk.h> > #include <linux/err.h> > +#include <linux/io.h> > #include <linux/pm_runtime.h> > #include <linux/delay.h> > #include <linux/usb/omap_control_usb.h> > @@ -52,17 +53,34 @@ > > /* > * This is an Empirical value that works, need to confirm the actual > - * value required for the USB3PHY_PLL_CONFIGURATION2.PLL_IDLE status > - * to be correctly reflected in the USB3PHY_PLL_STATUS register. > + * value required for the PIPE3PHY_PLL_CONFIGURATION2.PLL_IDLE status > + * to be correctly reflected in the PIPE3PHY_PLL_STATUS register. > */ > # define PLL_IDLE_TIME 100; > > -struct usb_dpll_map { > +struct pipe3_dpll_params { > + u16 m; > + u8 n; > + u8 freq:3; > + u8 sd; > + u32 mf; > +}; > + > +struct ti_pipe3 { > + void __iomem *pll_ctrl_base; > + struct device *dev; > + struct device *control_dev; > + struct clk *wkupclk; > + struct clk *sys_clk; > + struct clk *optclk; > +}; > + > +struct pipe3_dpll_map { > unsigned long rate; > - struct usb_dpll_params params; > + struct pipe3_dpll_params params; > }; > > -static struct usb_dpll_map dpll_map[] = { > +static struct pipe3_dpll_map dpll_map[] = { > {12000000, {1250, 5, 4, 20, 0} }, /* 12 MHz */ > {16800000, {3125, 20, 4, 20, 0} }, /* 16.8 MHz */ > {19200000, {1172, 8, 4, 20, 65537} }, /* 19.2 MHz */ > @@ -71,7 +89,18 @@ static struct usb_dpll_map dpll_map[] = { > {38400000, {3125, 47, 4, 20, 92843} }, /* 38.4 MHz */ > }; > > -static struct usb_dpll_params *omap_usb3_get_dpll_params(unsigned long rate) > +static inline u32 ti_pipe3_readl(void __iomem *addr, unsigned offset) > +{ > + return __raw_readl(addr + offset); > +} > + > +static inline void ti_pipe3_writel(void __iomem *addr, unsigned offset, > + u32 data) > +{ > + __raw_writel(data, addr + offset); > +} > + > +static struct pipe3_dpll_params *ti_pipe3_get_dpll_params(unsigned long rate) > { > int i; > > @@ -83,110 +112,123 @@ static struct usb_dpll_params *omap_usb3_get_dpll_params(unsigned long rate) > return NULL; > } > > -static int omap_usb3_suspend(struct usb_phy *x, int suspend) > +static int ti_pipe3_power_off(struct phy *x) > +{ > + struct ti_pipe3 *phy = phy_get_drvdata(x); > + int val; > + int timeout = PLL_IDLE_TIME; > + > + val = ti_pipe3_readl(phy->pll_ctrl_base, PLL_CONFIGURATION2); > + val |= PLL_IDLE; > + ti_pipe3_writel(phy->pll_ctrl_base, PLL_CONFIGURATION2, val); > + > + do { > + val = ti_pipe3_readl(phy->pll_ctrl_base, PLL_STATUS); > + if (val & PLL_TICOPWDN) > + break; > + udelay(5); > + } while (--timeout); > + > + if (!timeout) { > + dev_err(phy->dev, "power off failed\n"); > + return -EBUSY; > + } > + > + omap_control_usb_phy_power(phy->control_dev, 0); > + > + return 0; > +} > + > +static int ti_pipe3_power_on(struct phy *x) > { > - struct omap_usb *phy = phy_to_omapusb(x); > - int val; > + struct ti_pipe3 *phy = phy_get_drvdata(x); > + int val; > int timeout = PLL_IDLE_TIME; > > - if (suspend && !phy->is_suspended) { > - val = omap_usb_readl(phy->pll_ctrl_base, PLL_CONFIGURATION2); > - val |= PLL_IDLE; > - omap_usb_writel(phy->pll_ctrl_base, PLL_CONFIGURATION2, val); > - > - do { > - val = omap_usb_readl(phy->pll_ctrl_base, PLL_STATUS); > - if (val & PLL_TICOPWDN) > - break; > - udelay(1); > - } while (--timeout); > - > - omap_control_usb_phy_power(phy->control_dev, 0); > - > - phy->is_suspended = 1; > - } else if (!suspend && phy->is_suspended) { > - phy->is_suspended = 0; > - > - val = omap_usb_readl(phy->pll_ctrl_base, PLL_CONFIGURATION2); > - val &= ~PLL_IDLE; > - omap_usb_writel(phy->pll_ctrl_base, PLL_CONFIGURATION2, val); > - > - do { > - val = omap_usb_readl(phy->pll_ctrl_base, PLL_STATUS); > - if (!(val & PLL_TICOPWDN)) > - break; > - udelay(1); > - } while (--timeout); > + val = ti_pipe3_readl(phy->pll_ctrl_base, PLL_CONFIGURATION2); > + val &= ~PLL_IDLE; > + ti_pipe3_writel(phy->pll_ctrl_base, PLL_CONFIGURATION2, val); > + > + do { > + val = ti_pipe3_readl(phy->pll_ctrl_base, PLL_STATUS); > + if (!(val & PLL_TICOPWDN)) > + break; > + udelay(5); > + } while (--timeout); > + > + if (!timeout) { > + dev_err(phy->dev, "power on failed\n"); > + return -EBUSY; > } > > return 0; > } > > -static void omap_usb_dpll_relock(struct omap_usb *phy) > +static void ti_pipe3_dpll_relock(struct ti_pipe3 *phy) > { > u32 val; > unsigned long timeout; > > - omap_usb_writel(phy->pll_ctrl_base, PLL_GO, SET_PLL_GO); > + ti_pipe3_writel(phy->pll_ctrl_base, PLL_GO, SET_PLL_GO); > > timeout = jiffies + msecs_to_jiffies(20); > do { > - val = omap_usb_readl(phy->pll_ctrl_base, PLL_STATUS); > + val = ti_pipe3_readl(phy->pll_ctrl_base, PLL_STATUS); > if (val & PLL_LOCK) > break; > } while (!WARN_ON(time_after(jiffies, timeout))); > } > > -static int omap_usb_dpll_lock(struct omap_usb *phy) > +static int ti_pipe3_dpll_lock(struct ti_pipe3 *phy) > { > u32 val; > unsigned long rate; > - struct usb_dpll_params *dpll_params; > + struct pipe3_dpll_params *dpll_params; > > rate = clk_get_rate(phy->sys_clk); > - dpll_params = omap_usb3_get_dpll_params(rate); > + dpll_params = ti_pipe3_get_dpll_params(rate); > if (!dpll_params) { > dev_err(phy->dev, > "No DPLL configuration for %lu Hz SYS CLK\n", rate); > return -EINVAL; > } > > - val = omap_usb_readl(phy->pll_ctrl_base, PLL_CONFIGURATION1); > + val = ti_pipe3_readl(phy->pll_ctrl_base, PLL_CONFIGURATION1); > val &= ~PLL_REGN_MASK; > val |= dpll_params->n << PLL_REGN_SHIFT; > - omap_usb_writel(phy->pll_ctrl_base, PLL_CONFIGURATION1, val); > + ti_pipe3_writel(phy->pll_ctrl_base, PLL_CONFIGURATION1, val); > > - val = omap_usb_readl(phy->pll_ctrl_base, PLL_CONFIGURATION2); > + val = ti_pipe3_readl(phy->pll_ctrl_base, PLL_CONFIGURATION2); > val &= ~PLL_SELFREQDCO_MASK; > val |= dpll_params->freq << PLL_SELFREQDCO_SHIFT; > - omap_usb_writel(phy->pll_ctrl_base, PLL_CONFIGURATION2, val); > + ti_pipe3_writel(phy->pll_ctrl_base, PLL_CONFIGURATION2, val); > > - val = omap_usb_readl(phy->pll_ctrl_base, PLL_CONFIGURATION1); > + val = ti_pipe3_readl(phy->pll_ctrl_base, PLL_CONFIGURATION1); > val &= ~PLL_REGM_MASK; > val |= dpll_params->m << PLL_REGM_SHIFT; > - omap_usb_writel(phy->pll_ctrl_base, PLL_CONFIGURATION1, val); > + ti_pipe3_writel(phy->pll_ctrl_base, PLL_CONFIGURATION1, val); > > - val = omap_usb_readl(phy->pll_ctrl_base, PLL_CONFIGURATION4); > + val = ti_pipe3_readl(phy->pll_ctrl_base, PLL_CONFIGURATION4); > val &= ~PLL_REGM_F_MASK; > val |= dpll_params->mf << PLL_REGM_F_SHIFT; > - omap_usb_writel(phy->pll_ctrl_base, PLL_CONFIGURATION4, val); > + ti_pipe3_writel(phy->pll_ctrl_base, PLL_CONFIGURATION4, val); > > - val = omap_usb_readl(phy->pll_ctrl_base, PLL_CONFIGURATION3); > + val = ti_pipe3_readl(phy->pll_ctrl_base, PLL_CONFIGURATION3); > val &= ~PLL_SD_MASK; > val |= dpll_params->sd << PLL_SD_SHIFT; > - omap_usb_writel(phy->pll_ctrl_base, PLL_CONFIGURATION3, val); > + ti_pipe3_writel(phy->pll_ctrl_base, PLL_CONFIGURATION3, val); > > - omap_usb_dpll_relock(phy); > + ti_pipe3_dpll_relock(phy); > > return 0; > } > > -static int omap_usb3_init(struct usb_phy *x) > +static int ti_pipe3_init(struct phy *x) > { > - struct omap_usb *phy = phy_to_omapusb(x); > + struct ti_pipe3 *phy = phy_get_drvdata(x); > int ret; > > - ret = omap_usb_dpll_lock(phy); > + ret = ti_pipe3_dpll_lock(phy); > if (ret) > return ret; > > @@ -195,9 +237,18 @@ static int omap_usb3_init(struct usb_phy *x) > return 0; > } > > -static int omap_usb3_probe(struct platform_device *pdev) > +static struct phy_ops ops = { > + .init = ti_pipe3_init, > + .power_on = ti_pipe3_power_on, > + .power_off = ti_pipe3_power_off, > + .owner = THIS_MODULE, > +}; > + > +static int ti_pipe3_probe(struct platform_device *pdev) > { > - struct omap_usb *phy; > + struct ti_pipe3 *phy; > + struct phy *generic_phy; > + struct phy_provider *phy_provider; > struct resource *res; > struct device_node *node = pdev->dev.of_node; > struct device_node *control_node; > @@ -208,7 +259,7 @@ static int omap_usb3_probe(struct platform_device *pdev) > > phy = devm_kzalloc(&pdev->dev, sizeof(*phy), GFP_KERNEL); > if (!phy) { > - dev_err(&pdev->dev, "unable to alloc mem for OMAP USB3 PHY\n"); > + dev_err(&pdev->dev, "unable to alloc mem for TI PIPE3 PHY\n"); > return -ENOMEM; > } > > @@ -219,13 +270,6 @@ static int omap_usb3_probe(struct platform_device *pdev) > > phy->dev = &pdev->dev; > > - phy->phy.dev = phy->dev; > - phy->phy.label = "omap-usb3"; > - phy->phy.init = omap_usb3_init; > - phy->phy.set_suspend = omap_usb3_suspend; > - phy->phy.type = USB_PHY_TYPE_USB3; > - > - phy->is_suspended = 1; > 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"); > @@ -251,6 +295,7 @@ static int omap_usb3_probe(struct platform_device *pdev) > 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"); > @@ -260,23 +305,31 @@ static int omap_usb3_probe(struct platform_device *pdev) > phy->control_dev = &control_pdev->dev; > > omap_control_usb_phy_power(phy->control_dev, 0); > - usb_add_phy_dev(&phy->phy); > > platform_set_drvdata(pdev, phy); > - > pm_runtime_enable(phy->dev); > + > + generic_phy = devm_phy_create(phy->dev, &ops, NULL); > + if (IS_ERR(generic_phy)) > + return PTR_ERR(generic_phy); > + > + phy_set_drvdata(generic_phy, phy); > + phy_provider = devm_of_phy_provider_register(phy->dev, > + of_phy_simple_xlate); > + if (IS_ERR(phy_provider)) > + return PTR_ERR(phy_provider); > + > pm_runtime_get(&pdev->dev); > > return 0; > } > > -static int omap_usb3_remove(struct platform_device *pdev) > +static int ti_pipe3_remove(struct platform_device *pdev) > { > - struct omap_usb *phy = platform_get_drvdata(pdev); > + struct ti_pipe3 *phy = platform_get_drvdata(pdev); > > clk_unprepare(phy->wkupclk); > clk_unprepare(phy->optclk); > - usb_remove_phy(&phy->phy); > if (!pm_runtime_suspended(&pdev->dev)) > pm_runtime_put(&pdev->dev); > pm_runtime_disable(&pdev->dev); > @@ -286,10 +339,9 @@ static int omap_usb3_remove(struct platform_device *pdev) > > #ifdef CONFIG_PM_RUNTIME > > -static int omap_usb3_runtime_suspend(struct device *dev) > +static int ti_pipe3_runtime_suspend(struct device *dev) > { > - struct platform_device *pdev = to_platform_device(dev); > - struct omap_usb *phy = platform_get_drvdata(pdev); > + struct ti_pipe3 *phy = dev_get_drvdata(dev); > > clk_disable(phy->wkupclk); > clk_disable(phy->optclk); > @@ -297,11 +349,10 @@ static int omap_usb3_runtime_suspend(struct device *dev) > return 0; > } > > -static int omap_usb3_runtime_resume(struct device *dev) > +static int ti_pipe3_runtime_resume(struct device *dev) > { > u32 ret = 0; > - struct platform_device *pdev = to_platform_device(dev); > - struct omap_usb *phy = platform_get_drvdata(pdev); > + struct ti_pipe3 *phy = dev_get_drvdata(dev); > > ret = clk_enable(phy->optclk); > if (ret) { > @@ -324,38 +375,39 @@ err1: > return ret; > } > > -static const struct dev_pm_ops omap_usb3_pm_ops = { > - SET_RUNTIME_PM_OPS(omap_usb3_runtime_suspend, omap_usb3_runtime_resume, > - NULL) > +static const struct dev_pm_ops ti_pipe3_pm_ops = { > + SET_RUNTIME_PM_OPS(ti_pipe3_runtime_suspend, > + ti_pipe3_runtime_resume, NULL) > }; > > -#define DEV_PM_OPS (&omap_usb3_pm_ops) > +#define DEV_PM_OPS (&ti_pipe3_pm_ops) > #else > #define DEV_PM_OPS NULL > #endif > > #ifdef CONFIG_OF > -static const struct of_device_id omap_usb3_id_table[] = { > +static const struct of_device_id ti_pipe3_id_table[] = { > + { .compatible = "ti,phy-usb3" }, > { .compatible = "ti,omap-usb3" }, > {} > }; > -MODULE_DEVICE_TABLE(of, omap_usb3_id_table); > +MODULE_DEVICE_TABLE(of, ti_pipe3_id_table); > #endif > > -static struct platform_driver omap_usb3_driver = { > - .probe = omap_usb3_probe, > - .remove = omap_usb3_remove, > +static struct platform_driver ti_pipe3_driver = { > + .probe = ti_pipe3_probe, > + .remove = ti_pipe3_remove, > .driver = { > - .name = "omap-usb3", > + .name = "ti-pipe3", > .owner = THIS_MODULE, > .pm = DEV_PM_OPS, > - .of_match_table = of_match_ptr(omap_usb3_id_table), > + .of_match_table = of_match_ptr(ti_pipe3_id_table), > }, > }; > > -module_platform_driver(omap_usb3_driver); > +module_platform_driver(ti_pipe3_driver); > > -MODULE_ALIAS("platform: omap_usb3"); > +MODULE_ALIAS("platform: ti_pipe3"); > MODULE_AUTHOR("Texas Instruments Inc."); > -MODULE_DESCRIPTION("OMAP USB3 phy driver"); > +MODULE_DESCRIPTION("TI PIPE3 phy driver"); > MODULE_LICENSE("GPL v2"); > diff --git a/drivers/usb/phy/Kconfig b/drivers/usb/phy/Kconfig > index 7d1451d..c337ba2 100644 > --- a/drivers/usb/phy/Kconfig > +++ b/drivers/usb/phy/Kconfig > @@ -85,17 +85,6 @@ 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_USB3 > - tristate "OMAP USB3 PHY Driver" > - depends on ARCH_OMAP2PLUS || COMPILE_TEST > - select OMAP_CONTROL_USB > - select USB_PHY > - help > - Enable this to support the USB3 PHY that is part of SOC. This > - driver takes care of all the PHY functionality apart from comparator. > - This driver interacts with the "OMAP Control USB Driver" to power > - on/off the PHY. > - > config AM335X_CONTROL_USB > tristate > > diff --git a/drivers/usb/phy/Makefile b/drivers/usb/phy/Makefile > index be58ada..15f1878 100644 > --- a/drivers/usb/phy/Makefile > +++ b/drivers/usb/phy/Makefile > @@ -17,7 +17,6 @@ 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_OTG) += phy-omap-otg.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 > -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
diff --git a/drivers/phy/Kconfig b/drivers/phy/Kconfig index c7a551c..e3ec7d1 100644 --- a/drivers/phy/Kconfig +++ b/drivers/phy/Kconfig @@ -40,6 +40,17 @@ config OMAP_USB2 The USB OTG controller communicates with the comparator using this driver. +config TI_PIPE3 + tristate "TI PIPE3 PHY Driver" + depends on ARCH_OMAP2PLUS || COMPILE_TEST + select GENERIC_PHY + select OMAP_CONTROL_USB + help + Enable this to support the PIPE3 PHY that is part of TI SOCs. This + driver takes care of all the PHY functionality apart from comparator. + This driver interacts with the "OMAP Control PHY Driver" to power + on/off the PHY. + config TWL4030_USB tristate "TWL4030 USB Transceiver Driver" depends on TWL4030_CORE && REGULATOR_TWL4030 && USB_MUSB_OMAP2PLUS diff --git a/drivers/phy/Makefile b/drivers/phy/Makefile index b57c253..32e3f94 100644 --- a/drivers/phy/Makefile +++ b/drivers/phy/Makefile @@ -8,4 +8,5 @@ obj-$(CONFIG_PHY_EXYNOS_DP_VIDEO) += phy-exynos-dp-video.o obj-$(CONFIG_PHY_EXYNOS_MIPI_VIDEO) += phy-exynos-mipi-video.o obj-$(CONFIG_PHY_MVEBU_SATA) += phy-mvebu-sata.o obj-$(CONFIG_OMAP_USB2) += phy-omap-usb2.o +obj-$(CONFIG_TI_PIPE3) += phy-ti-pipe3.o obj-$(CONFIG_TWL4030_USB) += phy-twl4030-usb.o diff --git a/drivers/usb/phy/phy-omap-usb3.c b/drivers/phy/phy-ti-pipe3.c similarity index 54% rename from drivers/usb/phy/phy-omap-usb3.c rename to drivers/phy/phy-ti-pipe3.c index 0c6ba29..67b189d 100644 --- a/drivers/usb/phy/phy-omap-usb3.c +++ b/drivers/phy/phy-ti-pipe3.c @@ -1,5 +1,5 @@ /* - * omap-usb3 - USB PHY, talking to dwc3 controller in OMAP. + * phy-ti-pipe3 - PIPE3 PHY driver. * * Copyright (C) 2013 Texas Instruments Incorporated - http://www.ti.com * This program is free software; you can redistribute it and/or modify @@ -19,10 +19,11 @@ #include <linux/module.h> #include <linux/platform_device.h> #include <linux/slab.h> -#include <linux/usb/omap_usb.h> +#include <linux/phy/phy.h> #include <linux/of.h> #include <linux/clk.h> #include <linux/err.h> +#include <linux/io.h> #include <linux/pm_runtime.h> #include <linux/delay.h> #include <linux/usb/omap_control_usb.h> @@ -52,17 +53,34 @@ /* * This is an Empirical value that works, need to confirm the actual - * value required for the USB3PHY_PLL_CONFIGURATION2.PLL_IDLE status - * to be correctly reflected in the USB3PHY_PLL_STATUS register. + * value required for the PIPE3PHY_PLL_CONFIGURATION2.PLL_IDLE status + * to be correctly reflected in the PIPE3PHY_PLL_STATUS register. */ # define PLL_IDLE_TIME 100; -struct usb_dpll_map { +struct pipe3_dpll_params { + u16 m; + u8 n; + u8 freq:3; + u8 sd; + u32 mf; +}; + +struct ti_pipe3 { + void __iomem *pll_ctrl_base; + struct device *dev; + struct device *control_dev; + struct clk *wkupclk; + struct clk *sys_clk; + struct clk *optclk; +}; + +struct pipe3_dpll_map { unsigned long rate; - struct usb_dpll_params params; + struct pipe3_dpll_params params; }; -static struct usb_dpll_map dpll_map[] = { +static struct pipe3_dpll_map dpll_map[] = { {12000000, {1250, 5, 4, 20, 0} }, /* 12 MHz */ {16800000, {3125, 20, 4, 20, 0} }, /* 16.8 MHz */ {19200000, {1172, 8, 4, 20, 65537} }, /* 19.2 MHz */ @@ -71,7 +89,18 @@ static struct usb_dpll_map dpll_map[] = { {38400000, {3125, 47, 4, 20, 92843} }, /* 38.4 MHz */ }; -static struct usb_dpll_params *omap_usb3_get_dpll_params(unsigned long rate) +static inline u32 ti_pipe3_readl(void __iomem *addr, unsigned offset) +{ + return __raw_readl(addr + offset); +} + +static inline void ti_pipe3_writel(void __iomem *addr, unsigned offset, + u32 data) +{ + __raw_writel(data, addr + offset); +} + +static struct pipe3_dpll_params *ti_pipe3_get_dpll_params(unsigned long rate) { int i; @@ -83,110 +112,123 @@ static struct usb_dpll_params *omap_usb3_get_dpll_params(unsigned long rate) return NULL; } -static int omap_usb3_suspend(struct usb_phy *x, int suspend) +static int ti_pipe3_power_off(struct phy *x) +{ + struct ti_pipe3 *phy = phy_get_drvdata(x); + int val; + int timeout = PLL_IDLE_TIME; + + val = ti_pipe3_readl(phy->pll_ctrl_base, PLL_CONFIGURATION2); + val |= PLL_IDLE; + ti_pipe3_writel(phy->pll_ctrl_base, PLL_CONFIGURATION2, val); + + do { + val = ti_pipe3_readl(phy->pll_ctrl_base, PLL_STATUS); + if (val & PLL_TICOPWDN) + break; + udelay(5); + } while (--timeout); + + if (!timeout) { + dev_err(phy->dev, "power off failed\n"); + return -EBUSY; + } + + omap_control_usb_phy_power(phy->control_dev, 0); + + return 0; +} + +static int ti_pipe3_power_on(struct phy *x) { - struct omap_usb *phy = phy_to_omapusb(x); - int val; + struct ti_pipe3 *phy = phy_get_drvdata(x); + int val; int timeout = PLL_IDLE_TIME; - if (suspend && !phy->is_suspended) { - val = omap_usb_readl(phy->pll_ctrl_base, PLL_CONFIGURATION2); - val |= PLL_IDLE; - omap_usb_writel(phy->pll_ctrl_base, PLL_CONFIGURATION2, val); - - do { - val = omap_usb_readl(phy->pll_ctrl_base, PLL_STATUS); - if (val & PLL_TICOPWDN) - break; - udelay(1); - } while (--timeout); - - omap_control_usb_phy_power(phy->control_dev, 0); - - phy->is_suspended = 1; - } else if (!suspend && phy->is_suspended) { - phy->is_suspended = 0; - - val = omap_usb_readl(phy->pll_ctrl_base, PLL_CONFIGURATION2); - val &= ~PLL_IDLE; - omap_usb_writel(phy->pll_ctrl_base, PLL_CONFIGURATION2, val); - - do { - val = omap_usb_readl(phy->pll_ctrl_base, PLL_STATUS); - if (!(val & PLL_TICOPWDN)) - break; - udelay(1); - } while (--timeout); + val = ti_pipe3_readl(phy->pll_ctrl_base, PLL_CONFIGURATION2); + val &= ~PLL_IDLE; + ti_pipe3_writel(phy->pll_ctrl_base, PLL_CONFIGURATION2, val); + + do { + val = ti_pipe3_readl(phy->pll_ctrl_base, PLL_STATUS); + if (!(val & PLL_TICOPWDN)) + break; + udelay(5); + } while (--timeout); + + if (!timeout) { + dev_err(phy->dev, "power on failed\n"); + return -EBUSY; } return 0; } -static void omap_usb_dpll_relock(struct omap_usb *phy) +static void ti_pipe3_dpll_relock(struct ti_pipe3 *phy) { u32 val; unsigned long timeout; - omap_usb_writel(phy->pll_ctrl_base, PLL_GO, SET_PLL_GO); + ti_pipe3_writel(phy->pll_ctrl_base, PLL_GO, SET_PLL_GO); timeout = jiffies + msecs_to_jiffies(20); do { - val = omap_usb_readl(phy->pll_ctrl_base, PLL_STATUS); + val = ti_pipe3_readl(phy->pll_ctrl_base, PLL_STATUS); if (val & PLL_LOCK) break; } while (!WARN_ON(time_after(jiffies, timeout))); } -static int omap_usb_dpll_lock(struct omap_usb *phy) +static int ti_pipe3_dpll_lock(struct ti_pipe3 *phy) { u32 val; unsigned long rate; - struct usb_dpll_params *dpll_params; + struct pipe3_dpll_params *dpll_params; rate = clk_get_rate(phy->sys_clk); - dpll_params = omap_usb3_get_dpll_params(rate); + dpll_params = ti_pipe3_get_dpll_params(rate); if (!dpll_params) { dev_err(phy->dev, "No DPLL configuration for %lu Hz SYS CLK\n", rate); return -EINVAL; } - val = omap_usb_readl(phy->pll_ctrl_base, PLL_CONFIGURATION1); + val = ti_pipe3_readl(phy->pll_ctrl_base, PLL_CONFIGURATION1); val &= ~PLL_REGN_MASK; val |= dpll_params->n << PLL_REGN_SHIFT; - omap_usb_writel(phy->pll_ctrl_base, PLL_CONFIGURATION1, val); + ti_pipe3_writel(phy->pll_ctrl_base, PLL_CONFIGURATION1, val); - val = omap_usb_readl(phy->pll_ctrl_base, PLL_CONFIGURATION2); + val = ti_pipe3_readl(phy->pll_ctrl_base, PLL_CONFIGURATION2); val &= ~PLL_SELFREQDCO_MASK; val |= dpll_params->freq << PLL_SELFREQDCO_SHIFT; - omap_usb_writel(phy->pll_ctrl_base, PLL_CONFIGURATION2, val); + ti_pipe3_writel(phy->pll_ctrl_base, PLL_CONFIGURATION2, val); - val = omap_usb_readl(phy->pll_ctrl_base, PLL_CONFIGURATION1); + val = ti_pipe3_readl(phy->pll_ctrl_base, PLL_CONFIGURATION1); val &= ~PLL_REGM_MASK; val |= dpll_params->m << PLL_REGM_SHIFT; - omap_usb_writel(phy->pll_ctrl_base, PLL_CONFIGURATION1, val); + ti_pipe3_writel(phy->pll_ctrl_base, PLL_CONFIGURATION1, val); - val = omap_usb_readl(phy->pll_ctrl_base, PLL_CONFIGURATION4); + val = ti_pipe3_readl(phy->pll_ctrl_base, PLL_CONFIGURATION4); val &= ~PLL_REGM_F_MASK; val |= dpll_params->mf << PLL_REGM_F_SHIFT; - omap_usb_writel(phy->pll_ctrl_base, PLL_CONFIGURATION4, val); + ti_pipe3_writel(phy->pll_ctrl_base, PLL_CONFIGURATION4, val); - val = omap_usb_readl(phy->pll_ctrl_base, PLL_CONFIGURATION3); + val = ti_pipe3_readl(phy->pll_ctrl_base, PLL_CONFIGURATION3); val &= ~PLL_SD_MASK; val |= dpll_params->sd << PLL_SD_SHIFT; - omap_usb_writel(phy->pll_ctrl_base, PLL_CONFIGURATION3, val); + ti_pipe3_writel(phy->pll_ctrl_base, PLL_CONFIGURATION3, val); - omap_usb_dpll_relock(phy); + ti_pipe3_dpll_relock(phy); return 0; } -static int omap_usb3_init(struct usb_phy *x) +static int ti_pipe3_init(struct phy *x) { - struct omap_usb *phy = phy_to_omapusb(x); + struct ti_pipe3 *phy = phy_get_drvdata(x); int ret; - ret = omap_usb_dpll_lock(phy); + ret = ti_pipe3_dpll_lock(phy); if (ret) return ret; @@ -195,9 +237,18 @@ static int omap_usb3_init(struct usb_phy *x) return 0; } -static int omap_usb3_probe(struct platform_device *pdev) +static struct phy_ops ops = { + .init = ti_pipe3_init, + .power_on = ti_pipe3_power_on, + .power_off = ti_pipe3_power_off, + .owner = THIS_MODULE, +}; + +static int ti_pipe3_probe(struct platform_device *pdev) { - struct omap_usb *phy; + struct ti_pipe3 *phy; + struct phy *generic_phy; + struct phy_provider *phy_provider; struct resource *res; struct device_node *node = pdev->dev.of_node; struct device_node *control_node; @@ -208,7 +259,7 @@ static int omap_usb3_probe(struct platform_device *pdev) phy = devm_kzalloc(&pdev->dev, sizeof(*phy), GFP_KERNEL); if (!phy) { - dev_err(&pdev->dev, "unable to alloc mem for OMAP USB3 PHY\n"); + dev_err(&pdev->dev, "unable to alloc mem for TI PIPE3 PHY\n"); return -ENOMEM; } @@ -219,13 +270,6 @@ static int omap_usb3_probe(struct platform_device *pdev) phy->dev = &pdev->dev; - phy->phy.dev = phy->dev; - phy->phy.label = "omap-usb3"; - phy->phy.init = omap_usb3_init; - phy->phy.set_suspend = omap_usb3_suspend; - phy->phy.type = USB_PHY_TYPE_USB3; - - phy->is_suspended = 1; 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"); @@ -251,6 +295,7 @@ static int omap_usb3_probe(struct platform_device *pdev) 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"); @@ -260,23 +305,31 @@ static int omap_usb3_probe(struct platform_device *pdev) phy->control_dev = &control_pdev->dev; omap_control_usb_phy_power(phy->control_dev, 0); - usb_add_phy_dev(&phy->phy); platform_set_drvdata(pdev, phy); - pm_runtime_enable(phy->dev); + + generic_phy = devm_phy_create(phy->dev, &ops, NULL); + if (IS_ERR(generic_phy)) + return PTR_ERR(generic_phy); + + phy_set_drvdata(generic_phy, phy); + phy_provider = devm_of_phy_provider_register(phy->dev, + of_phy_simple_xlate); + if (IS_ERR(phy_provider)) + return PTR_ERR(phy_provider); + pm_runtime_get(&pdev->dev); return 0; } -static int omap_usb3_remove(struct platform_device *pdev) +static int ti_pipe3_remove(struct platform_device *pdev) { - struct omap_usb *phy = platform_get_drvdata(pdev); + struct ti_pipe3 *phy = platform_get_drvdata(pdev); clk_unprepare(phy->wkupclk); clk_unprepare(phy->optclk); - usb_remove_phy(&phy->phy); if (!pm_runtime_suspended(&pdev->dev)) pm_runtime_put(&pdev->dev); pm_runtime_disable(&pdev->dev); @@ -286,10 +339,9 @@ static int omap_usb3_remove(struct platform_device *pdev) #ifdef CONFIG_PM_RUNTIME -static int omap_usb3_runtime_suspend(struct device *dev) +static int ti_pipe3_runtime_suspend(struct device *dev) { - struct platform_device *pdev = to_platform_device(dev); - struct omap_usb *phy = platform_get_drvdata(pdev); + struct ti_pipe3 *phy = dev_get_drvdata(dev); clk_disable(phy->wkupclk); clk_disable(phy->optclk); @@ -297,11 +349,10 @@ static int omap_usb3_runtime_suspend(struct device *dev) return 0; } -static int omap_usb3_runtime_resume(struct device *dev) +static int ti_pipe3_runtime_resume(struct device *dev) { u32 ret = 0; - struct platform_device *pdev = to_platform_device(dev); - struct omap_usb *phy = platform_get_drvdata(pdev); + struct ti_pipe3 *phy = dev_get_drvdata(dev); ret = clk_enable(phy->optclk); if (ret) { @@ -324,38 +375,39 @@ err1: return ret; } -static const struct dev_pm_ops omap_usb3_pm_ops = { - SET_RUNTIME_PM_OPS(omap_usb3_runtime_suspend, omap_usb3_runtime_resume, - NULL) +static const struct dev_pm_ops ti_pipe3_pm_ops = { + SET_RUNTIME_PM_OPS(ti_pipe3_runtime_suspend, + ti_pipe3_runtime_resume, NULL) }; -#define DEV_PM_OPS (&omap_usb3_pm_ops) +#define DEV_PM_OPS (&ti_pipe3_pm_ops) #else #define DEV_PM_OPS NULL #endif #ifdef CONFIG_OF -static const struct of_device_id omap_usb3_id_table[] = { +static const struct of_device_id ti_pipe3_id_table[] = { + { .compatible = "ti,phy-usb3" }, { .compatible = "ti,omap-usb3" }, {} }; -MODULE_DEVICE_TABLE(of, omap_usb3_id_table); +MODULE_DEVICE_TABLE(of, ti_pipe3_id_table); #endif -static struct platform_driver omap_usb3_driver = { - .probe = omap_usb3_probe, - .remove = omap_usb3_remove, +static struct platform_driver ti_pipe3_driver = { + .probe = ti_pipe3_probe, + .remove = ti_pipe3_remove, .driver = { - .name = "omap-usb3", + .name = "ti-pipe3", .owner = THIS_MODULE, .pm = DEV_PM_OPS, - .of_match_table = of_match_ptr(omap_usb3_id_table), + .of_match_table = of_match_ptr(ti_pipe3_id_table), }, }; -module_platform_driver(omap_usb3_driver); +module_platform_driver(ti_pipe3_driver); -MODULE_ALIAS("platform: omap_usb3"); +MODULE_ALIAS("platform: ti_pipe3"); MODULE_AUTHOR("Texas Instruments Inc."); -MODULE_DESCRIPTION("OMAP USB3 phy driver"); +MODULE_DESCRIPTION("TI PIPE3 phy driver"); MODULE_LICENSE("GPL v2"); diff --git a/drivers/usb/phy/Kconfig b/drivers/usb/phy/Kconfig index 7d1451d..c337ba2 100644 --- a/drivers/usb/phy/Kconfig +++ b/drivers/usb/phy/Kconfig @@ -85,17 +85,6 @@ 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_USB3 - tristate "OMAP USB3 PHY Driver" - depends on ARCH_OMAP2PLUS || COMPILE_TEST - select OMAP_CONTROL_USB - select USB_PHY - help - Enable this to support the USB3 PHY that is part of SOC. This - driver takes care of all the PHY functionality apart from comparator. - This driver interacts with the "OMAP Control USB Driver" to power - on/off the PHY. - config AM335X_CONTROL_USB tristate diff --git a/drivers/usb/phy/Makefile b/drivers/usb/phy/Makefile index be58ada..15f1878 100644 --- a/drivers/usb/phy/Makefile +++ b/drivers/usb/phy/Makefile @@ -17,7 +17,6 @@ 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_OTG) += phy-omap-otg.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
Adapted omap-usb3 PHY driver to Generic PHY Framework and moved phy-omap-usb3 driver in drivers/usb/phy to drivers/phy and also renamed the file to phy-ti-pipe3 since this same driver will be used for SATA PHY and PCIE PHY. Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com> --- drivers/phy/Kconfig | 11 + drivers/phy/Makefile | 1 + .../phy/phy-omap-usb3.c => phy/phy-ti-pipe3.c} | 240 ++++++++++++-------- drivers/usb/phy/Kconfig | 11 - drivers/usb/phy/Makefile | 1 - 5 files changed, 158 insertions(+), 106 deletions(-) rename drivers/{usb/phy/phy-omap-usb3.c => phy/phy-ti-pipe3.c} (54%)