mfd: omap-usb-tll: HOST TLL platform driver (16fa3dc7) · Commits · 戴 / test

arch/arm/plat-omap/include/plat/usb.h

+6 −0

Original line number	Diff line number	Diff line
		@@ -64,6 +64,10 @@ struct usbhs_omap_platform_data {
		struct ehci_hcd_omap_platform_data *ehci_data;
		struct ohci_hcd_omap_platform_data *ohci_data;
		};

		struct usbtll_omap_platform_data {
		enum usbhs_omap_port_mode port_mode[OMAP3_HS_USB_PORTS];
		};
		/-------------------------------------------------------------------------/

		struct omap_musb_board_data {
		@@ -82,6 +86,8 @@ enum musb_interface {MUSB_INTERFACE_ULPI, MUSB_INTERFACE_UTMI};
		extern void usb_musb_init(struct omap_musb_board_data *board_data);

		extern void usbhs_init(const struct usbhs_omap_board_data *pdata);
		extern int omap_tll_enable(void);
		extern int omap_tll_disable(void);

		extern int omap4430_phy_power(struct device *dev, int ID, int on);
		extern int omap4430_phy_set_clk(struct device *dev, int on);

drivers/mfd/Kconfig

+1 −1

Original line number	Diff line number	Diff line
		@@ -897,7 +897,7 @@ config MFD_WL1273_CORE
		audio codec.

		config MFD_OMAP_USB_HOST
		bool "Support OMAP USBHS core driver"
		bool "Support OMAP USBHS core and TLL driver"
		depends on USB_EHCI_HCD_OMAP \|\| USB_OHCI_HCD_OMAP3
		default y
		help

drivers/mfd/Makefile

+1 −1

Original line number	Diff line number	Diff line
		@@ -120,7 +120,7 @@ obj-$(CONFIG_MFD_TPS6586X) += tps6586x.o
		obj-$(CONFIG_MFD_VX855) += vx855.o
		obj-$(CONFIG_MFD_WL1273_CORE) += wl1273-core.o
		obj-$(CONFIG_MFD_CS5535) += cs5535-mfd.o
		obj-$(CONFIG_MFD_OMAP_USB_HOST) += omap-usb-host.o
		obj-$(CONFIG_MFD_OMAP_USB_HOST) += omap-usb-host.o omap-usb-tll.o
		obj-$(CONFIG_MFD_PM8921_CORE) += pm8921-core.o
		obj-$(CONFIG_MFD_PM8XXX_IRQ) += pm8xxx-irq.o
		obj-$(CONFIG_TPS65911_COMPARATOR) += tps65911-comparator.o

drivers/mfd/omap-usb-tll.c

0 → 100644

+471 −0

Original line number	Diff line number	Diff line
		/**
		* omap-usb-tll.c - The USB TLL driver for OMAP EHCI & OHCI
		*
		* Copyright (C) 2012 Texas Instruments Incorporated - http://www.ti.com
		* Author: Keshava Munegowda <keshava_mgowda@ti.com>
		*
		* This program is free software: you can redistribute it and/or modify
		* it under the terms of the GNU General Public License version 2 of
		* the License as published by the Free Software Foundation.
		*
		* This program is distributed in the hope that it will be useful,
		* but WITHOUT ANY WARRANTY; without even the implied warranty of
		* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
		* GNU General Public License for more details.
		*
		* You should have received a copy of the GNU General Public License
		* along with this program. If not, see <http://www.gnu.org/licenses/>.
		*/
		#include <linux/kernel.h>
		#include <linux/module.h>
		#include <linux/types.h>
		#include <linux/slab.h>
		#include <linux/spinlock.h>
		#include <linux/platform_device.h>
		#include <linux/clk.h>
		#include <linux/io.h>
		#include <linux/err.h>
		#include <plat/usb.h>
		#include <linux/pm_runtime.h>

		#define USBTLL_DRIVER_NAME "usbhs_tll"

		/* TLL Register Set */
		#define OMAP_USBTLL_REVISION (0x00)
		#define OMAP_USBTLL_SYSCONFIG (0x10)
		#define OMAP_USBTLL_SYSCONFIG_CACTIVITY (1 << 8)
		#define OMAP_USBTLL_SYSCONFIG_SIDLEMODE (1 << 3)
		#define OMAP_USBTLL_SYSCONFIG_ENAWAKEUP (1 << 2)
		#define OMAP_USBTLL_SYSCONFIG_SOFTRESET (1 << 1)
		#define OMAP_USBTLL_SYSCONFIG_AUTOIDLE (1 << 0)

		#define OMAP_USBTLL_SYSSTATUS (0x14)
		#define OMAP_USBTLL_SYSSTATUS_RESETDONE (1 << 0)

		#define OMAP_USBTLL_IRQSTATUS (0x18)
		#define OMAP_USBTLL_IRQENABLE (0x1C)

		#define OMAP_TLL_SHARED_CONF (0x30)
		#define OMAP_TLL_SHARED_CONF_USB_90D_DDR_EN (1 << 6)
		#define OMAP_TLL_SHARED_CONF_USB_180D_SDR_EN (1 << 5)
		#define OMAP_TLL_SHARED_CONF_USB_DIVRATION (1 << 2)
		#define OMAP_TLL_SHARED_CONF_FCLK_REQ (1 << 1)
		#define OMAP_TLL_SHARED_CONF_FCLK_IS_ON (1 << 0)

		#define OMAP_TLL_CHANNEL_CONF(num) (0x040 + 0x004 * num)
		#define OMAP_TLL_CHANNEL_CONF_FSLSMODE_SHIFT 24
		#define OMAP_TLL_CHANNEL_CONF_ULPINOBITSTUFF (1 << 11)
		#define OMAP_TLL_CHANNEL_CONF_ULPI_ULPIAUTOIDLE (1 << 10)
		#define OMAP_TLL_CHANNEL_CONF_UTMIAUTOIDLE (1 << 9)
		#define OMAP_TLL_CHANNEL_CONF_ULPIDDRMODE (1 << 8)
		#define OMAP_TLL_CHANNEL_CONF_CHANMODE_FSLS (1 << 1)
		#define OMAP_TLL_CHANNEL_CONF_CHANEN (1 << 0)

		#define OMAP_TLL_FSLSMODE_6PIN_PHY_DAT_SE0 0x0
		#define OMAP_TLL_FSLSMODE_6PIN_PHY_DP_DM 0x1
		#define OMAP_TLL_FSLSMODE_3PIN_PHY 0x2
		#define OMAP_TLL_FSLSMODE_4PIN_PHY 0x3
		#define OMAP_TLL_FSLSMODE_6PIN_TLL_DAT_SE0 0x4
		#define OMAP_TLL_FSLSMODE_6PIN_TLL_DP_DM 0x5
		#define OMAP_TLL_FSLSMODE_3PIN_TLL 0x6
		#define OMAP_TLL_FSLSMODE_4PIN_TLL 0x7
		#define OMAP_TLL_FSLSMODE_2PIN_TLL_DAT_SE0 0xA
		#define OMAP_TLL_FSLSMODE_2PIN_DAT_DP_DM 0xB

		#define OMAP_TLL_ULPI_FUNCTION_CTRL(num) (0x804 + 0x100 * num)
		#define OMAP_TLL_ULPI_INTERFACE_CTRL(num) (0x807 + 0x100 * num)
		#define OMAP_TLL_ULPI_OTG_CTRL(num) (0x80A + 0x100 * num)
		#define OMAP_TLL_ULPI_INT_EN_RISE(num) (0x80D + 0x100 * num)
		#define OMAP_TLL_ULPI_INT_EN_FALL(num) (0x810 + 0x100 * num)
		#define OMAP_TLL_ULPI_INT_STATUS(num) (0x813 + 0x100 * num)
		#define OMAP_TLL_ULPI_INT_LATCH(num) (0x814 + 0x100 * num)
		#define OMAP_TLL_ULPI_DEBUG(num) (0x815 + 0x100 * num)
		#define OMAP_TLL_ULPI_SCRATCH_REGISTER(num) (0x816 + 0x100 * num)

		#define OMAP_REV2_TLL_CHANNEL_COUNT 2
		#define OMAP_TLL_CHANNEL_COUNT 3
		#define OMAP_TLL_CHANNEL_1_EN_MASK (1 << 0)
		#define OMAP_TLL_CHANNEL_2_EN_MASK (1 << 1)
		#define OMAP_TLL_CHANNEL_3_EN_MASK (1 << 2)

		/* Values of USBTLL_REVISION - Note: these are not given in the TRM */
		#define OMAP_USBTLL_REV1 0x00000015 /* OMAP3 */
		#define OMAP_USBTLL_REV2 0x00000018 /* OMAP 3630 */
		#define OMAP_USBTLL_REV3 0x00000004 /* OMAP4 */

		#define is_ehci_tll_mode(x) (x == OMAP_EHCI_PORT_MODE_TLL)

		struct usbtll_omap {
		struct clk *usbtll_p1_fck;
		struct clk *usbtll_p2_fck;
		struct usbtll_omap_platform_data platdata;
		/* secure the register updates */
		spinlock_t lock;
		};

		/-------------------------------------------------------------------------/

		const char usbtll_driver_name[] = USBTLL_DRIVER_NAME;
		struct platform_device *tll_pdev;

		/-------------------------------------------------------------------------/

		static inline void usbtll_write(void __iomem *base, u32 reg, u32 val)
		{
		__raw_writel(val, base + reg);
		}

		static inline u32 usbtll_read(void __iomem *base, u32 reg)
		{
		return __raw_readl(base + reg);
		}

		static inline void usbtll_writeb(void __iomem *base, u8 reg, u8 val)
		{
		__raw_writeb(val, base + reg);
		}

		static inline u8 usbtll_readb(void __iomem *base, u8 reg)
		{
		return __raw_readb(base + reg);
		}

		/-------------------------------------------------------------------------/

		static bool is_ohci_port(enum usbhs_omap_port_mode pmode)
		{
		switch (pmode) {
		case OMAP_OHCI_PORT_MODE_PHY_6PIN_DATSE0:
		case OMAP_OHCI_PORT_MODE_PHY_6PIN_DPDM:
		case OMAP_OHCI_PORT_MODE_PHY_3PIN_DATSE0:
		case OMAP_OHCI_PORT_MODE_PHY_4PIN_DPDM:
		case OMAP_OHCI_PORT_MODE_TLL_6PIN_DATSE0:
		case OMAP_OHCI_PORT_MODE_TLL_6PIN_DPDM:
		case OMAP_OHCI_PORT_MODE_TLL_3PIN_DATSE0:
		case OMAP_OHCI_PORT_MODE_TLL_4PIN_DPDM:
		case OMAP_OHCI_PORT_MODE_TLL_2PIN_DATSE0:
		case OMAP_OHCI_PORT_MODE_TLL_2PIN_DPDM:
		return true;

		default:
		return false;
		}
		}

		/*
		* convert the port-mode enum to a value we can use in the FSLSMODE
		* field of USBTLL_CHANNEL_CONF
		*/
		static unsigned ohci_omap3_fslsmode(enum usbhs_omap_port_mode mode)
		{
		switch (mode) {
		case OMAP_USBHS_PORT_MODE_UNUSED:
		case OMAP_OHCI_PORT_MODE_PHY_6PIN_DATSE0:
		return OMAP_TLL_FSLSMODE_6PIN_PHY_DAT_SE0;

		case OMAP_OHCI_PORT_MODE_PHY_6PIN_DPDM:
		return OMAP_TLL_FSLSMODE_6PIN_PHY_DP_DM;

		case OMAP_OHCI_PORT_MODE_PHY_3PIN_DATSE0:
		return OMAP_TLL_FSLSMODE_3PIN_PHY;

		case OMAP_OHCI_PORT_MODE_PHY_4PIN_DPDM:
		return OMAP_TLL_FSLSMODE_4PIN_PHY;

		case OMAP_OHCI_PORT_MODE_TLL_6PIN_DATSE0:
		return OMAP_TLL_FSLSMODE_6PIN_TLL_DAT_SE0;

		case OMAP_OHCI_PORT_MODE_TLL_6PIN_DPDM:
		return OMAP_TLL_FSLSMODE_6PIN_TLL_DP_DM;

		case OMAP_OHCI_PORT_MODE_TLL_3PIN_DATSE0:
		return OMAP_TLL_FSLSMODE_3PIN_TLL;

		case OMAP_OHCI_PORT_MODE_TLL_4PIN_DPDM:
		return OMAP_TLL_FSLSMODE_4PIN_TLL;

		case OMAP_OHCI_PORT_MODE_TLL_2PIN_DATSE0:
		return OMAP_TLL_FSLSMODE_2PIN_TLL_DAT_SE0;

		case OMAP_OHCI_PORT_MODE_TLL_2PIN_DPDM:
		return OMAP_TLL_FSLSMODE_2PIN_DAT_DP_DM;
		default:
		pr_warn("Invalid port mode, using default\n");
		return OMAP_TLL_FSLSMODE_6PIN_PHY_DAT_SE0;
		}
		}

		/**
		* usbtll_omap_probe - initialize TI-based HCDs
		*
		* Allocates basic resources for this USB host controller.
		*/
		static int __devinit usbtll_omap_probe(struct platform_device *pdev)
		{
		struct device *dev = &pdev->dev;
		struct usbtll_omap_platform_data *pdata = dev->platform_data;
		void __iomem *base;
		struct resource *res;
		struct usbtll_omap *tll;
		unsigned reg;
		unsigned long flags;
		int ret = 0;
		int i, ver, count;

		dev_dbg(dev, "starting TI HSUSB TLL Controller\n");

		tll = kzalloc(sizeof(struct usbtll_omap), GFP_KERNEL);
		if (!tll) {
		dev_err(dev, "Memory allocation failed\n");
		ret = -ENOMEM;
		goto end;
		}

		spin_lock_init(&tll->lock);

		for (i = 0; i < OMAP3_HS_USB_PORTS; i++)
		tll->platdata.port_mode[i] = pdata->port_mode[i];

		tll->usbtll_p1_fck = clk_get(dev, "usb_tll_hs_usb_ch0_clk");
		if (IS_ERR(tll->usbtll_p1_fck)) {
		ret = PTR_ERR(tll->usbtll_p1_fck);
		dev_err(dev, "usbtll_p1_fck failed error:%d\n", ret);
		goto err_tll;
		}

		tll->usbtll_p2_fck = clk_get(dev, "usb_tll_hs_usb_ch1_clk");
		if (IS_ERR(tll->usbtll_p2_fck)) {
		ret = PTR_ERR(tll->usbtll_p2_fck);
		dev_err(dev, "usbtll_p2_fck failed error:%d\n", ret);
		goto err_usbtll_p1_fck;
		}

		res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
		if (!res) {
		dev_err(dev, "usb tll get resource failed\n");
		ret = -ENODEV;
		goto err_usbtll_p2_fck;
		}

		base = ioremap(res->start, resource_size(res));
		if (!base) {
		dev_err(dev, "TLL ioremap failed\n");
		ret = -ENOMEM;
		goto err_usbtll_p2_fck;
		}

		platform_set_drvdata(pdev, tll);
		pm_runtime_enable(dev);
		pm_runtime_get_sync(dev);

		spin_lock_irqsave(&tll->lock, flags);

		ver = usbtll_read(base, OMAP_USBTLL_REVISION);
		switch (ver) {
		case OMAP_USBTLL_REV1:
		case OMAP_USBTLL_REV2:
		count = OMAP_TLL_CHANNEL_COUNT;
		break;
		case OMAP_USBTLL_REV3:
		count = OMAP_REV2_TLL_CHANNEL_COUNT;
		break;
		default:
		dev_err(dev, "TLL version failed\n");
		ret = -ENODEV;
		goto err_ioremap;
		}

		if (is_ehci_tll_mode(pdata->port_mode[0]) \|\|
		is_ehci_tll_mode(pdata->port_mode[1]) \|\|
		is_ehci_tll_mode(pdata->port_mode[2]) \|\|
		is_ohci_port(pdata->port_mode[0]) \|\|
		is_ohci_port(pdata->port_mode[1]) \|\|
		is_ohci_port(pdata->port_mode[2])) {

		/* Program Common TLL register */
		reg = usbtll_read(base, OMAP_TLL_SHARED_CONF);
		reg \|= (OMAP_TLL_SHARED_CONF_FCLK_IS_ON
		\| OMAP_TLL_SHARED_CONF_USB_DIVRATION);
		reg &= ~OMAP_TLL_SHARED_CONF_USB_90D_DDR_EN;
		reg &= ~OMAP_TLL_SHARED_CONF_USB_180D_SDR_EN;

		usbtll_write(base, OMAP_TLL_SHARED_CONF, reg);

		/* Enable channels now */
		for (i = 0; i < count; i++) {
		reg = usbtll_read(base, OMAP_TLL_CHANNEL_CONF(i));

		if (is_ohci_port(pdata->port_mode[i])) {
		reg \|= ohci_omap3_fslsmode(pdata->port_mode[i])
		<< OMAP_TLL_CHANNEL_CONF_FSLSMODE_SHIFT;
		reg \|= OMAP_TLL_CHANNEL_CONF_CHANMODE_FSLS;
		} else if (pdata->port_mode[i] ==
		OMAP_EHCI_PORT_MODE_TLL) {
		/*
		* Disable AutoIdle, BitStuffing
		* and use SDR Mode
		*/
		reg &= ~(OMAP_TLL_CHANNEL_CONF_UTMIAUTOIDLE
		\| OMAP_TLL_CHANNEL_CONF_ULPINOBITSTUFF
		\| OMAP_TLL_CHANNEL_CONF_ULPIDDRMODE);
		} else {
		continue;
		}
		reg \|= OMAP_TLL_CHANNEL_CONF_CHANEN;
		usbtll_write(base, OMAP_TLL_CHANNEL_CONF(i), reg);

		usbtll_writeb(base,
		OMAP_TLL_ULPI_SCRATCH_REGISTER(i),
		0xbe);
		}
		}

		err_ioremap:
		spin_unlock_irqrestore(&tll->lock, flags);
		iounmap(base);
		pm_runtime_put_sync(dev);
		tll_pdev = pdev;
		if (!ret)
		goto end;
		pm_runtime_disable(dev);

		err_usbtll_p2_fck:
		clk_put(tll->usbtll_p2_fck);

		err_usbtll_p1_fck:
		clk_put(tll->usbtll_p1_fck);

		err_tll:
		kfree(tll);

		end:
		return ret;
		}

		/**
		* usbtll_omap_remove - shutdown processing for UHH & TLL HCDs
		* @pdev: USB Host Controller being removed
		*
		* Reverses the effect of usbtll_omap_probe().
		*/
		static int __devexit usbtll_omap_remove(struct platform_device *pdev)
		{
		struct usbtll_omap *tll = platform_get_drvdata(pdev);

		clk_put(tll->usbtll_p2_fck);
		clk_put(tll->usbtll_p1_fck);
		pm_runtime_disable(&pdev->dev);
		kfree(tll);
		return 0;
		}

		static int usbtll_runtime_resume(struct device *dev)
		{
		struct usbtll_omap *tll = dev_get_drvdata(dev);
		struct usbtll_omap_platform_data *pdata = &tll->platdata;
		unsigned long flags;

		dev_dbg(dev, "usbtll_runtime_resume\n");

		if (!pdata) {
		dev_dbg(dev, "missing platform_data\n");
		return -ENODEV;
		}

		spin_lock_irqsave(&tll->lock, flags);

		if (is_ehci_tll_mode(pdata->port_mode[0]))
		clk_enable(tll->usbtll_p1_fck);

		if (is_ehci_tll_mode(pdata->port_mode[1]))
		clk_enable(tll->usbtll_p2_fck);

		spin_unlock_irqrestore(&tll->lock, flags);

		return 0;
		}

		static int usbtll_runtime_suspend(struct device *dev)
		{
		struct usbtll_omap *tll = dev_get_drvdata(dev);
		struct usbtll_omap_platform_data *pdata = &tll->platdata;
		unsigned long flags;

		dev_dbg(dev, "usbtll_runtime_suspend\n");

		if (!pdata) {
		dev_dbg(dev, "missing platform_data\n");
		return -ENODEV;
		}

		spin_lock_irqsave(&tll->lock, flags);

		if (is_ehci_tll_mode(pdata->port_mode[0]))
		clk_disable(tll->usbtll_p1_fck);

		if (is_ehci_tll_mode(pdata->port_mode[1]))
		clk_disable(tll->usbtll_p2_fck);

		spin_unlock_irqrestore(&tll->lock, flags);

		return 0;
		}

		static const struct dev_pm_ops usbtllomap_dev_pm_ops = {
		SET_RUNTIME_PM_OPS(usbtll_runtime_suspend,
		usbtll_runtime_resume,
		NULL)
		};

		static struct platform_driver usbtll_omap_driver = {
		.driver = {
		.name = (char *)usbtll_driver_name,
		.owner = THIS_MODULE,
		.pm = &usbtllomap_dev_pm_ops,
		},
		.probe = usbtll_omap_probe,
		.remove = __devexit_p(usbtll_omap_remove),
		};

		int omap_tll_enable(void)
		{
		if (!tll_pdev) {
		pr_err("missing omap usbhs tll platform_data\n");
		return -ENODEV;
		}
		return pm_runtime_get_sync(&tll_pdev->dev);
		}
		EXPORT_SYMBOL_GPL(omap_tll_enable);

		int omap_tll_disable(void)
		{
		if (!tll_pdev) {
		pr_err("missing omap usbhs tll platform_data\n");
		return -ENODEV;
		}
		return pm_runtime_put_sync(&tll_pdev->dev);
		}
		EXPORT_SYMBOL_GPL(omap_tll_disable);

		MODULE_AUTHOR("Keshava Munegowda <keshava_mgowda@ti.com>");
		MODULE_ALIAS("platform:" USBHS_DRIVER_NAME);
		MODULE_LICENSE("GPL v2");
		MODULE_DESCRIPTION("usb tll driver for TI OMAP EHCI and OHCI controllers");

		static int __init omap_usbtll_drvinit(void)
		{
		return platform_driver_register(&usbtll_omap_driver);
		}

		/*
		* init before usbhs core driver;
		* The usbtll driver should be initialized before
		* the usbhs core driver probe function is called.
		*/
		fs_initcall(omap_usbtll_drvinit);

		static void __exit omap_usbtll_drvexit(void)
		{
		platform_driver_unregister(&usbtll_omap_driver);
		}
		module_exit(omap_usbtll_drvexit);

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