From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932288Ab3IBPoj (ORCPT ); Mon, 2 Sep 2013 11:44:39 -0400 Received: from bear.ext.ti.com ([192.94.94.41]:47694 "EHLO bear.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932151Ab3IBPo2 (ORCPT ); Mon, 2 Sep 2013 11:44:28 -0400 From: Kishon Vijay Abraham I To: , , CC: , , , , , , , , , , , , , , , , , , , Subject: [PATCH 3/7] drivers: phy: usb3/pipe3: Adapt pipe3 driver to Generic PHY Framework Date: Mon, 2 Sep 2013 21:13:07 +0530 Message-ID: <1378136591-7463-4-git-send-email-kishon@ti.com> X-Mailer: git-send-email 1.7.10.4 In-Reply-To: <1378136591-7463-1-git-send-email-kishon@ti.com> References: <1378136591-7463-1-git-send-email-kishon@ti.com> MIME-Version: 1.0 Content-Type: text/plain Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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-omap-pipe3 since this same driver will be used for SATA PHY and PCIE PHY. Signed-off-by: Kishon Vijay Abraham I --- Documentation/devicetree/bindings/usb/usb-phy.txt | 5 +- drivers/phy/Kconfig | 10 + drivers/phy/Makefile | 1 + .../phy/phy-omap-usb3.c => phy/phy-omap-pipe3.c} | 206 +++++++++++--------- drivers/usb/phy/Kconfig | 11 -- drivers/usb/phy/Makefile | 1 - include/linux/phy/omap_pipe3.h | 52 +++++ 7 files changed, 177 insertions(+), 109 deletions(-) rename drivers/{usb/phy/phy-omap-usb3.c => phy/phy-omap-pipe3.c} (57%) create mode 100644 include/linux/phy/omap_pipe3.h diff --git a/Documentation/devicetree/bindings/usb/usb-phy.txt b/Documentation/devicetree/bindings/usb/usb-phy.txt index c0245c8..36bdb17 100644 --- a/Documentation/devicetree/bindings/usb/usb-phy.txt +++ b/Documentation/devicetree/bindings/usb/usb-phy.txt @@ -21,10 +21,11 @@ usb2phy@4a0ad080 { #phy-cells = <0>; }; -OMAP USB3 PHY +OMAP PIPE3 PHY Required properties: - - compatible: Should be "ti,omap-usb3" + - compatible: Should be "ti,omap-usb3", "ti,omap-pipe3", "ti,omap-sata" + or "ti,omap-pcie" - reg : Address and length of the register set for the device. - reg-names: The names of the register addresses corresponding to the registers filled in "reg". diff --git a/drivers/phy/Kconfig b/drivers/phy/Kconfig index ac239ac..5c2e7a0 100644 --- a/drivers/phy/Kconfig +++ b/drivers/phy/Kconfig @@ -27,6 +27,16 @@ config OMAP_USB2 The USB OTG controller communicates with the comparator using this driver. +config OMAP_PIPE3 + tristate "OMAP PIPE3 PHY Driver" + select GENERIC_PHY + select OMAP_CONTROL_USB + help + Enable this to support the PIPE3 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 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 0dd8a98..48bf9f2 100644 --- a/drivers/phy/Makefile +++ b/drivers/phy/Makefile @@ -4,4 +4,5 @@ obj-$(CONFIG_GENERIC_PHY) += phy-core.o obj-$(CONFIG_OMAP_USB2) += phy-omap-usb2.o +obj-$(CONFIG_OMAP_PIPE3) += phy-omap-pipe3.o obj-$(CONFIG_TWL4030_USB) += phy-twl4030-usb.o diff --git a/drivers/usb/phy/phy-omap-usb3.c b/drivers/phy/phy-omap-pipe3.c similarity index 57% rename from drivers/usb/phy/phy-omap-usb3.c rename to drivers/phy/phy-omap-pipe3.c index 4004f82..ee9a901 100644 --- a/drivers/usb/phy/phy-omap-usb3.c +++ b/drivers/phy/phy-omap-pipe3.c @@ -1,5 +1,5 @@ /* - * omap-usb3 - USB PHY, talking to dwc3 controller in OMAP. + * omap-pipe3 - PHY driver for SATA, USB and PCIE in OMAP platforms * * Copyright (C) 2013 Texas Instruments Incorporated - http://www.ti.com * This program is free software; you can redistribute it and/or modify @@ -19,7 +19,8 @@ #include #include #include -#include +#include +#include #include #include #include @@ -52,17 +53,17 @@ /* * 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_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 +72,7 @@ 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 struct pipe3_dpll_params *omap_pipe3_get_dpll_params(unsigned long rate) { int i; @@ -83,110 +84,113 @@ static struct usb_dpll_params *omap_usb3_get_dpll_params(unsigned long rate) return 0; } -static int omap_usb3_suspend(struct usb_phy *x, int suspend) +static int omap_pipe3_power_off(struct phy *x) { - struct omap_usb *phy = phy_to_omapusb(x); - int val; + struct omap_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 = omap_pipe3_readl(phy->pll_ctrl_base, PLL_CONFIGURATION2); + val |= PLL_IDLE; + omap_pipe3_writel(phy->pll_ctrl_base, PLL_CONFIGURATION2, val); + + do { + val = omap_pipe3_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); + + return 0; +} + +static int omap_pipe3_power_on(struct phy *x) +{ + struct omap_pipe3 *phy = phy_get_drvdata(x); + int val; + int timeout = PLL_IDLE_TIME; + + val = omap_pipe3_readl(phy->pll_ctrl_base, PLL_CONFIGURATION2); + val &= ~PLL_IDLE; + omap_pipe3_writel(phy->pll_ctrl_base, PLL_CONFIGURATION2, val); + + do { + val = omap_pipe3_readl(phy->pll_ctrl_base, PLL_STATUS); + if (!(val & PLL_TICOPWDN)) + break; + udelay(1); + } while (--timeout); return 0; } -static void omap_usb_dpll_relock(struct omap_usb *phy) +static void omap_pipe3_dpll_relock(struct omap_pipe3 *phy) { u32 val; unsigned long timeout; - omap_usb_writel(phy->pll_ctrl_base, PLL_GO, SET_PLL_GO); + omap_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 = omap_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 omap_pipe3_dpll_lock(struct omap_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 = omap_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 = omap_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); + omap_pipe3_writel(phy->pll_ctrl_base, PLL_CONFIGURATION1, val); - val = omap_usb_readl(phy->pll_ctrl_base, PLL_CONFIGURATION2); + val = omap_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); + omap_pipe3_writel(phy->pll_ctrl_base, PLL_CONFIGURATION2, val); - val = omap_usb_readl(phy->pll_ctrl_base, PLL_CONFIGURATION1); + val = omap_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); + omap_pipe3_writel(phy->pll_ctrl_base, PLL_CONFIGURATION1, val); - val = omap_usb_readl(phy->pll_ctrl_base, PLL_CONFIGURATION4); + val = omap_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); + omap_pipe3_writel(phy->pll_ctrl_base, PLL_CONFIGURATION4, val); - val = omap_usb_readl(phy->pll_ctrl_base, PLL_CONFIGURATION3); + val = omap_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); + omap_pipe3_writel(phy->pll_ctrl_base, PLL_CONFIGURATION3, val); - omap_usb_dpll_relock(phy); + omap_pipe3_dpll_relock(phy); return 0; } -static int omap_usb3_init(struct usb_phy *x) +static int omap_pipe3_init(struct phy *x) { - struct omap_usb *phy = phy_to_omapusb(x); + struct omap_pipe3 *phy = phy_get_drvdata(x); int ret; - ret = omap_usb_dpll_lock(phy); + ret = omap_pipe3_dpll_lock(phy); if (ret) return ret; @@ -195,9 +199,18 @@ 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 = omap_pipe3_init, + .power_on = omap_pipe3_power_on, + .power_off = omap_pipe3_power_off, + .owner = THIS_MODULE, +}; + +static int omap_pipe3_probe(struct platform_device *pdev) { - struct omap_usb *phy; + struct omap_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 +221,7 @@ 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 OMAP PIPE3 PHY\n"); return -ENOMEM; } @@ -219,13 +232,6 @@ 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 +257,11 @@ static int omap_usb3_probe(struct platform_device *pdev) dev_err(&pdev->dev, "Failed to get control device phandle\n"); return -EINVAL; } + phy_provider = devm_of_phy_provider_register(phy->dev, + of_phy_simple_xlate); + if (IS_ERR(phy_provider)) + return PTR_ERR(phy_provider); + control_pdev = of_find_device_by_node(control_node); if (!control_pdev) { dev_err(&pdev->dev, "Failed to get control device\n"); @@ -260,23 +271,27 @@ 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); + pm_runtime_get(&pdev->dev); return 0; } -static int omap_usb3_remove(struct platform_device *pdev) +static int omap_pipe3_remove(struct platform_device *pdev) { - struct omap_usb *phy = platform_get_drvdata(pdev); + struct omap_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 +301,9 @@ static int omap_usb3_remove(struct platform_device *pdev) #ifdef CONFIG_PM_RUNTIME -static int omap_usb3_runtime_suspend(struct device *dev) +static int omap_pipe3_runtime_suspend(struct device *dev) { - struct platform_device *pdev = to_platform_device(dev); - struct omap_usb *phy = platform_get_drvdata(pdev); + struct omap_pipe3 *phy = dev_get_drvdata(dev); clk_disable(phy->wkupclk); clk_disable(phy->optclk); @@ -297,11 +311,10 @@ static int omap_usb3_runtime_suspend(struct device *dev) return 0; } -static int omap_usb3_runtime_resume(struct device *dev) +static int omap_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 omap_pipe3 *phy = dev_get_drvdata(dev); ret = clk_enable(phy->optclk); if (ret) { @@ -324,38 +337,41 @@ 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 omap_pipe3_pm_ops = { + SET_RUNTIME_PM_OPS(omap_pipe3_runtime_suspend, + omap_pipe3_runtime_resume, NULL) }; -#define DEV_PM_OPS (&omap_usb3_pm_ops) +#define DEV_PM_OPS (&omap_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 omap_pipe3_id_table[] = { + { .compatible = "ti,omap-pipe3" }, + { .compatible = "ti,omap-sata" }, + { .compatible = "ti,omap-pcie" }, { .compatible = "ti,omap-usb3" }, {} }; -MODULE_DEVICE_TABLE(of, omap_usb3_id_table); +MODULE_DEVICE_TABLE(of, omap_pipe3_id_table); #endif -static struct platform_driver omap_usb3_driver = { - .probe = omap_usb3_probe, - .remove = omap_usb3_remove, +static struct platform_driver omap_pipe3_driver = { + .probe = omap_pipe3_probe, + .remove = omap_pipe3_remove, .driver = { - .name = "omap-usb3", + .name = "omap-pipe3", .owner = THIS_MODULE, .pm = DEV_PM_OPS, - .of_match_table = of_match_ptr(omap_usb3_id_table), + .of_match_table = of_match_ptr(omap_pipe3_id_table), }, }; -module_platform_driver(omap_usb3_driver); +module_platform_driver(omap_pipe3_driver); -MODULE_ALIAS("platform: omap_usb3"); +MODULE_ALIAS("platform: omap_pipe3"); MODULE_AUTHOR("Texas Instruments Inc."); -MODULE_DESCRIPTION("OMAP USB3 phy driver"); +MODULE_DESCRIPTION("OMAP PIPE3 phy driver"); MODULE_LICENSE("GPL v2"); diff --git a/drivers/usb/phy/Kconfig b/drivers/usb/phy/Kconfig index d69cdad..0210e03 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_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 51968d7..d1c9683 100644 --- a/drivers/usb/phy/Makefile +++ b/drivers/usb/phy/Makefile @@ -13,7 +13,6 @@ obj-$(CONFIG_ISP1301_OMAP) += phy-isp1301-omap.o obj-$(CONFIG_MV_U3D_PHY) += phy-mv-u3d-usb.o obj-$(CONFIG_NOP_USB_XCEIV) += phy-generic.o obj-$(CONFIG_OMAP_CONTROL_USB) += phy-omap-control.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 diff --git a/include/linux/phy/omap_pipe3.h b/include/linux/phy/omap_pipe3.h new file mode 100644 index 0000000..7329056 --- /dev/null +++ b/include/linux/phy/omap_pipe3.h @@ -0,0 +1,52 @@ +/* + * omap_pipe3.h -- omap pipe3 phy header file + * + * Copyright (C) 2013 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 + * + * 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. + * + */ + +#ifndef __DRIVERS_OMAP_PIPE3_H +#define __DRIVERS_OMAP_PIPE3_H + +#include + +struct pipe3_dpll_params { + u16 m; + u8 n; + u8 freq:3; + u8 sd; + u32 mf; +}; + +struct omap_pipe3 { + void __iomem *pll_ctrl_base; + struct device *dev; + struct device *control_dev; + struct clk *wkupclk; + struct clk *sys_clk; + struct clk *optclk; +}; + +static inline u32 omap_pipe3_readl(void __iomem *addr, unsigned offset) +{ + return __raw_readl(addr + offset); +} + +static inline void omap_pipe3_writel(void __iomem *addr, unsigned offset, + u32 data) +{ + __raw_writel(data, addr + offset); +} + +#endif /* __DRIVERS_OMAP_PIPE3_H */ -- 1.7.10.4