drivers: phy: usb3/pipe3: Adapt pipe3 driver to Generic PHY Framework

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>

3 files changed, 0 insertions, 373 deletions

diff --git a/drivers/usb/phy/Kconfig b/drivers/usb/phy/Kconfig
index 7d1451d5bbea..c337ba2d066b 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 be58adae3496..15f1878388f4 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
diff --git a/drivers/usb/phy/phy-omap-usb3.c b/drivers/usb/phy/phy-omap-usb3.c
deleted file mode 100644
index 0c6ba29bdddd..000000000000
--- a/drivers/usb/phy/phy-omap-usb3.c
+++ /dev/null
@@ -1,361 +0,0 @@
-/*
- * omap-usb3 - USB PHY, talking to dwc3 controller in OMAP.
- *
- * 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 <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/usb/omap_usb.h>
-#include <linux/of.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>
-#include <linux/of_platform.h>
-
-#define PLL_STATUS              0x00000004
-#define PLL_GO                  0x00000008
-#define PLL_CONFIGURATION1      0x0000000C
-#define PLL_CONFIGURATION2      0x00000010
-#define PLL_CONFIGURATION3      0x00000014
-#define PLL_CONFIGURATION4      0x00000020
-
-#define PLL_REGM_MASK           0x001FFE00
-#define PLL_REGM_SHIFT          0x9
-#define PLL_REGM_F_MASK         0x0003FFFF
-#define PLL_REGM_F_SHIFT        0x0
-#define PLL_REGN_MASK           0x000001FE
-#define PLL_REGN_SHIFT          0x1
-#define PLL_SELFREQDCO_MASK     0x0000000E
-#define PLL_SELFREQDCO_SHIFT    0x1
-#define PLL_SD_MASK             0x0003FC00
-#define PLL_SD_SHIFT            0x9
-#define SET_PLL_GO              0x1
-#define PLL_TICOPWDN            0x10000
-#define PLL_LOCK                0x2
-#define PLL_IDLE                0x1
-
-/*
- * 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.
- */
-# define PLL_IDLE_TIME  100;
-
-struct usb_dpll_map {
-        unsigned long rate;
-        struct usb_dpll_params params;
-};
-
-static struct usb_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 */
-        {20000000, {1000, 7, 4, 10, 0} },       /* 20 MHz */
-        {26000000, {1250, 12, 4, 20, 0} },      /* 26 MHz */
-        {38400000, {3125, 47, 4, 20, 92843} },  /* 38.4 MHz */
-};
-
-static struct usb_dpll_params *omap_usb3_get_dpll_params(unsigned long rate)
-{
-        int i;
-
-        for (i = 0; i < ARRAY_SIZE(dpll_map); i++) {
-                if (rate == dpll_map[i].rate)
-                        return &dpll_map[i].params;
-        }
-
-        return NULL;
-}
-
-static int omap_usb3_suspend(struct usb_phy *x, int suspend)
-{
-        struct omap_usb *phy = phy_to_omapusb(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);
-        }
-
-        return 0;
-}
-
-static void omap_usb_dpll_relock(struct omap_usb *phy)
-{
-        u32             val;
-        unsigned long   timeout;
-
-        omap_usb_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);
-                if (val & PLL_LOCK)
-                        break;
-        } while (!WARN_ON(time_after(jiffies, timeout)));
-}
-
-static int omap_usb_dpll_lock(struct omap_usb *phy)
-{
-        u32                     val;
-        unsigned long           rate;
-        struct usb_dpll_params *dpll_params;
-
-        rate = clk_get_rate(phy->sys_clk);
-        dpll_params = omap_usb3_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 &= ~PLL_REGN_MASK;
-        val |= dpll_params->n << PLL_REGN_SHIFT;
-        omap_usb_writel(phy->pll_ctrl_base, PLL_CONFIGURATION1, val);
-
-        val = omap_usb_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);
-
-        val = omap_usb_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);
-
-        val = omap_usb_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);
-
-        val = omap_usb_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_usb_dpll_relock(phy);
-
-        return 0;
-}
-
-static int omap_usb3_init(struct usb_phy *x)
-{
-        struct omap_usb *phy = phy_to_omapusb(x);
-        int ret;
-
-        ret = omap_usb_dpll_lock(phy);
-        if (ret)
-                return ret;
-
-        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 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) {
-                dev_err(&pdev->dev, "unable to alloc mem for OMAP USB3 PHY\n");
-                return -ENOMEM;
-        }
-
-        res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "pll_ctrl");
-        phy->pll_ctrl_base = devm_ioremap_resource(&pdev->dev, res);
-        if (IS_ERR(phy->pll_ctrl_base))
-                return PTR_ERR(phy->pll_ctrl_base);
-
-        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");
-                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_err(&pdev->dev, "unable to get usb_otg_ss_refclk960m\n");
-                return PTR_ERR(phy->optclk);
-        }
-        clk_prepare(phy->optclk);
-
-        phy->sys_clk = devm_clk_get(phy->dev, "sys_clkin");
-        if (IS_ERR(phy->sys_clk)) {
-                pr_err("%s: unable to get sys_clkin\n", __func__);
-                return -EINVAL;
-        }
-
-        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_usb_phy_power(phy->control_dev, 0);
-        usb_add_phy_dev(&phy->phy);
-
-        platform_set_drvdata(pdev, phy);
-
-        pm_runtime_enable(phy->dev);
-        pm_runtime_get(&pdev->dev);
-
-        return 0;
-}
-
-static int omap_usb3_remove(struct platform_device *pdev)
-{
-        struct omap_usb *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);
-
-        return 0;
-}
-
-#ifdef CONFIG_PM_RUNTIME
-
-static int omap_usb3_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);
-        clk_disable(phy->optclk);
-
-        return 0;
-}
-
-static int omap_usb3_runtime_resume(struct device *dev)
-{
-        u32 ret = 0;
-        struct platform_device  *pdev = to_platform_device(dev);
-        struct omap_usb *phy = platform_get_drvdata(pdev);
-
-        ret = clk_enable(phy->optclk);
-        if (ret) {
-                dev_err(phy->dev, "Failed to enable optclk %d\n", ret);
-                goto err1;
-        }
-
-        ret = clk_enable(phy->wkupclk);
-        if (ret) {
-                dev_err(phy->dev, "Failed to enable wkupclk %d\n", ret);
-                goto err2;
-        }
-
-        return 0;
-
-err2:
-        clk_disable(phy->optclk);
-
-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)
-};
-
-#define DEV_PM_OPS     (&omap_usb3_pm_ops)
-#else
-#define DEV_PM_OPS     NULL
-#endif
-
-#ifdef CONFIG_OF
-static const struct of_device_id omap_usb3_id_table[] = {
-        { .compatible = "ti,omap-usb3" },
-        {}
-};
-MODULE_DEVICE_TABLE(of, omap_usb3_id_table);
-#endif
-
-static struct platform_driver omap_usb3_driver = {
-        .probe          = omap_usb3_probe,
-        .remove         = omap_usb3_remove,
-        .driver         = {
-                .name   = "omap-usb3",
-                .owner  = THIS_MODULE,
-                .pm     = DEV_PM_OPS,
-                .of_match_table = of_match_ptr(omap_usb3_id_table),
-        },
-};
-
-module_platform_driver(omap_usb3_driver);
-
-MODULE_ALIAS("platform: omap_usb3");
-MODULE_AUTHOR("Texas Instruments Inc.");
-MODULE_DESCRIPTION("OMAP USB3 phy driver");
-MODULE_LICENSE("GPL v2");