Merge branch 'musb-hw' of git://gitorious.org/usb/usb into musb

* 'musb-hw' of git://gitorious.org/usb/usb: (43 commits)
  usb: musb: core: kill unneeded #include's
  DA8xx: assign name to MUSB IRQ resource
  arm: OMAP4430: musb: Configure musb to OTG mode
  usb: musb: Adding musb support for OMAP4430
  usb: otg: TWL6030: Add twl6030_usb file for compilation
  mfd: TWL6030: OMAP4: Registering the TWL6030-usb device
  usb: musb: TWL6030: Selecting TWL6030_USB transceiver
  usb: otg: Kconfig: Add Kconfig option for TWL6030 transceiver.
  usb: otg: Adding twl6030-usb transceiver driver for OMAP4430
  mfd: TWL6030: USBOTG VBUS event generation on
  usb: musb: add support for ux500 platform
  musb: am35x: fix compile error due to control apis
  arm: omap4: enable usb on 4430sdp
  usb: musb: drop board_set_vbus
  usb: musb: drop musb_platform_suspend/resume
  usb: musb: blackfin: usb dev_pm_ops structure
  usb: musb: am35x: usb dev_pm_ops structure
  usb: musb: omap2430: use dev_pm_ops structure
  usb: musb: omap2430: drop the nops
  usb: musb: mark musb_save/restore_context static
  ...

3 files changed, 506 insertions, 0 deletions

diff --git a/drivers/usb/otg/Kconfig b/drivers/usb/otg/Kconfig
index 6491717a636a..9fb875d5f09c 100644
--- a/drivers/usb/otg/Kconfig
+++ b/drivers/usb/otg/Kconfig
@@ -59,6 +59,18 @@ config TWL4030_USB
           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
+        select USB_OTG_UTILS
+        help
+          Enable this to support the USB OTG transceiver on TWL6030
+          family chips. This TWL6030 transceiver has the VBUS and ID GND
+          and OTG SRP events capabilities. For all other transceiver functionality
+          UTMI PHY is embedded in OMAP4430. The internal PHY configurations APIs
+          are hooked to this driver through platform_data structure.
+          The definition of internal PHY APIs are in the mach-omap2 layer.
+
 config NOP_USB_XCEIV
         tristate "NOP USB Transceiver Driver"
         select USB_OTG_UTILS
diff --git a/drivers/usb/otg/Makefile b/drivers/usb/otg/Makefile
index 30a23f3b7a1f..a520e715cfd6 100644
--- a/drivers/usb/otg/Makefile
+++ b/drivers/usb/otg/Makefile
@@ -12,6 +12,7 @@ obj-$(CONFIG_USB_OTG_UTILS)	+= otg.o
 obj-$(CONFIG_USB_GPIO_VBUS)     += gpio_vbus.o
 obj-$(CONFIG_ISP1301_OMAP)      += isp1301_omap.o
 obj-$(CONFIG_TWL4030_USB)       += twl4030-usb.o
+obj-$(CONFIG_TWL6030_USB)       += twl6030-usb.o
 obj-$(CONFIG_USB_LANGWELL_OTG)  += langwell_otg.o
 obj-$(CONFIG_NOP_USB_XCEIV)     += nop-usb-xceiv.o
 obj-$(CONFIG_USB_ULPI)          += ulpi.o
diff --git a/drivers/usb/otg/twl6030-usb.c b/drivers/usb/otg/twl6030-usb.c
new file mode 100644
index 000000000000..28f770103640
--- /dev/null
+++ b/drivers/usb/otg/twl6030-usb.c
@@ -0,0 +1,493 @@
+/*
+ * twl6030_usb - TWL6030 USB transceiver, talking to OMAP OTG driver.
+ *
+ * Copyright (C) 2010 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: Hema HK <hemahk@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.
+ *
+ * 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.
+ *
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/platform_device.h>
+#include <linux/io.h>
+#include <linux/usb/otg.h>
+#include <linux/i2c/twl.h>
+#include <linux/regulator/consumer.h>
+#include <linux/err.h>
+#include <linux/notifier.h>
+#include <linux/slab.h>
+
+/* usb register definitions */
+#define USB_VENDOR_ID_LSB               0x00
+#define USB_VENDOR_ID_MSB               0x01
+#define USB_PRODUCT_ID_LSB              0x02
+#define USB_PRODUCT_ID_MSB              0x03
+#define USB_VBUS_CTRL_SET               0x04
+#define USB_VBUS_CTRL_CLR               0x05
+#define USB_ID_CTRL_SET                 0x06
+#define USB_ID_CTRL_CLR                 0x07
+#define USB_VBUS_INT_SRC                0x08
+#define USB_VBUS_INT_LATCH_SET          0x09
+#define USB_VBUS_INT_LATCH_CLR          0x0A
+#define USB_VBUS_INT_EN_LO_SET          0x0B
+#define USB_VBUS_INT_EN_LO_CLR          0x0C
+#define USB_VBUS_INT_EN_HI_SET          0x0D
+#define USB_VBUS_INT_EN_HI_CLR          0x0E
+#define USB_ID_INT_SRC                  0x0F
+#define USB_ID_INT_LATCH_SET            0x10
+#define USB_ID_INT_LATCH_CLR            0x11
+
+#define USB_ID_INT_EN_LO_SET            0x12
+#define USB_ID_INT_EN_LO_CLR            0x13
+#define USB_ID_INT_EN_HI_SET            0x14
+#define USB_ID_INT_EN_HI_CLR            0x15
+#define USB_OTG_ADP_CTRL                0x16
+#define USB_OTG_ADP_HIGH                0x17
+#define USB_OTG_ADP_LOW                 0x18
+#define USB_OTG_ADP_RISE                0x19
+#define USB_OTG_REVISION                0x1A
+
+/* to be moved to LDO */
+#define TWL6030_MISC2                   0xE5
+#define TWL6030_CFG_LDO_PD2             0xF5
+#define TWL6030_BACKUP_REG              0xFA
+
+#define STS_HW_CONDITIONS               0x21
+
+/* In module TWL6030_MODULE_PM_MASTER */
+#define STS_HW_CONDITIONS               0x21
+#define STS_USB_ID                      BIT(2)
+
+/* In module TWL6030_MODULE_PM_RECEIVER */
+#define VUSB_CFG_TRANS                  0x71
+#define VUSB_CFG_STATE                  0x72
+#define VUSB_CFG_VOLTAGE                0x73
+
+/* in module TWL6030_MODULE_MAIN_CHARGE */
+
+#define CHARGERUSB_CTRL1                0x8
+
+#define CONTROLLER_STAT1                0x03
+#define VBUS_DET                        BIT(2)
+
+struct twl6030_usb {
+        struct otg_transceiver  otg;
+        struct device           *dev;
+
+        /* for vbus reporting with irqs disabled */
+        spinlock_t              lock;
+
+        struct regulator                *usb3v3;
+
+        int                     irq1;
+        int                     irq2;
+        u8                      linkstat;
+        u8                      asleep;
+        bool                    irq_enabled;
+};
+
+#define xceiv_to_twl(x)         container_of((x), struct twl6030_usb, otg);
+
+/*-------------------------------------------------------------------------*/
+
+static inline int twl6030_writeb(struct twl6030_usb *twl, u8 module,
+                                                u8 data, u8 address)
+{
+        int ret = 0;
+
+        ret = twl_i2c_write_u8(module, data, address);
+        if (ret < 0)
+                dev_err(twl->dev,
+                        "Write[0x%x] Error %d\n", address, ret);
+        return ret;
+}
+
+static inline u8 twl6030_readb(struct twl6030_usb *twl, u8 module, u8 address)
+{
+        u8 data, ret = 0;
+
+        ret = twl_i2c_read_u8(module, &data, address);
+        if (ret >= 0)
+                ret = data;
+        else
+                dev_err(twl->dev,
+                        "readb[0x%x,0x%x] Error %d\n",
+                                        module, address, ret);
+        return ret;
+}
+
+/*-------------------------------------------------------------------------*/
+static int twl6030_set_phy_clk(struct otg_transceiver *x, int on)
+{
+        struct twl6030_usb *twl;
+        struct device *dev;
+        struct twl4030_usb_data *pdata;
+
+        twl = xceiv_to_twl(x);
+        dev  = twl->dev;
+        pdata = dev->platform_data;
+
+        pdata->phy_set_clock(twl->dev, on);
+
+        return 0;
+}
+
+static int twl6030_phy_init(struct otg_transceiver *x)
+{
+        u8 hw_state;
+        struct twl6030_usb *twl;
+        struct device *dev;
+        struct twl4030_usb_data *pdata;
+
+        twl = xceiv_to_twl(x);
+        dev  = twl->dev;
+        pdata = dev->platform_data;
+
+        regulator_enable(twl->usb3v3);
+
+        hw_state = twl6030_readb(twl, TWL6030_MODULE_ID0, STS_HW_CONDITIONS);
+
+        if (hw_state & STS_USB_ID)
+                pdata->phy_power(twl->dev, 1, 1);
+        else
+                pdata->phy_power(twl->dev, 0, 1);
+
+        return 0;
+}
+
+static void twl6030_phy_shutdown(struct otg_transceiver *x)
+{
+        struct twl6030_usb *twl;
+        struct device *dev;
+        struct twl4030_usb_data *pdata;
+
+        twl = xceiv_to_twl(x);
+        dev  = twl->dev;
+        pdata = dev->platform_data;
+        pdata->phy_power(twl->dev, 0, 0);
+        regulator_disable(twl->usb3v3);
+}
+
+static int twl6030_usb_ldo_init(struct twl6030_usb *twl)
+{
+
+        /* Set to OTG_REV 1.3 and turn on the ID_WAKEUP_COMP */
+        twl6030_writeb(twl, TWL6030_MODULE_ID0 , 0x1, TWL6030_BACKUP_REG);
+
+        /* Program CFG_LDO_PD2 register and set VUSB bit */
+        twl6030_writeb(twl, TWL6030_MODULE_ID0 , 0x1, TWL6030_CFG_LDO_PD2);
+
+        /* Program MISC2 register and set bit VUSB_IN_VBAT */
+        twl6030_writeb(twl, TWL6030_MODULE_ID0 , 0x10, TWL6030_MISC2);
+
+        twl->usb3v3 = regulator_get(twl->dev, "vusb");
+        if (IS_ERR(twl->usb3v3))
+                return -ENODEV;
+
+        regulator_enable(twl->usb3v3);
+
+        /* Program the VUSB_CFG_TRANS for ACTIVE state. */
+        twl6030_writeb(twl, TWL_MODULE_PM_RECEIVER, 0x3F,
+                                                VUSB_CFG_TRANS);
+
+        /* Program the VUSB_CFG_STATE register to ON on all groups. */
+        twl6030_writeb(twl, TWL_MODULE_PM_RECEIVER, 0xE1,
+                                                VUSB_CFG_STATE);
+
+        /* Program the USB_VBUS_CTRL_SET and set VBUS_ACT_COMP bit */
+        twl6030_writeb(twl, TWL_MODULE_USB, 0x4, USB_VBUS_CTRL_SET);
+
+        /*
+         * Program the USB_ID_CTRL_SET register to enable GND drive
+         * and the ID comparators
+         */
+        twl6030_writeb(twl, TWL_MODULE_USB, 0x14, USB_ID_CTRL_SET);
+
+        return 0;
+}
+
+static ssize_t twl6030_usb_vbus_show(struct device *dev,
+                        struct device_attribute *attr, char *buf)
+{
+        struct twl6030_usb *twl = dev_get_drvdata(dev);
+        unsigned long flags;
+        int ret = -EINVAL;
+
+        spin_lock_irqsave(&twl->lock, flags);
+
+        switch (twl->linkstat) {
+        case USB_EVENT_VBUS:
+               ret = snprintf(buf, PAGE_SIZE, "vbus\n");
+               break;
+        case USB_EVENT_ID:
+               ret = snprintf(buf, PAGE_SIZE, "id\n");
+               break;
+        case USB_EVENT_NONE:
+               ret = snprintf(buf, PAGE_SIZE, "none\n");
+               break;
+        default:
+               ret = snprintf(buf, PAGE_SIZE, "UNKNOWN\n");
+        }
+        spin_unlock_irqrestore(&twl->lock, flags);
+
+        return ret;
+}
+static DEVICE_ATTR(vbus, 0444, twl6030_usb_vbus_show, NULL);
+
+static irqreturn_t twl6030_usb_irq(int irq, void *_twl)
+{
+        struct twl6030_usb *twl = _twl;
+        int status;
+        u8 vbus_state, hw_state;
+
+        hw_state = twl6030_readb(twl, TWL6030_MODULE_ID0, STS_HW_CONDITIONS);
+
+        vbus_state = twl6030_readb(twl, TWL_MODULE_MAIN_CHARGE,
+                                                CONTROLLER_STAT1);
+        if (!(hw_state & STS_USB_ID)) {
+                if (vbus_state & VBUS_DET) {
+                        status = USB_EVENT_VBUS;
+                        twl->otg.default_a = false;
+                        twl->otg.state = OTG_STATE_B_IDLE;
+                } else {
+                        status = USB_EVENT_NONE;
+                }
+                if (status >= 0) {
+                        twl->linkstat = status;
+                        blocking_notifier_call_chain(&twl->otg.notifier,
+                                                status, twl->otg.gadget);
+                }
+        }
+        sysfs_notify(&twl->dev->kobj, NULL, "vbus");
+
+        return IRQ_HANDLED;
+}
+
+static irqreturn_t twl6030_usbotg_irq(int irq, void *_twl)
+{
+        struct twl6030_usb *twl = _twl;
+        int status = USB_EVENT_NONE;
+        u8 hw_state;
+
+        hw_state = twl6030_readb(twl, TWL6030_MODULE_ID0, STS_HW_CONDITIONS);
+
+        if (hw_state & STS_USB_ID) {
+
+                twl6030_writeb(twl, TWL_MODULE_USB, USB_ID_INT_EN_HI_CLR, 0x1);
+                twl6030_writeb(twl, TWL_MODULE_USB, USB_ID_INT_EN_HI_SET,
+                                                                0x10);
+                status = USB_EVENT_ID;
+                twl->otg.default_a = true;
+                twl->otg.state = OTG_STATE_A_IDLE;
+                blocking_notifier_call_chain(&twl->otg.notifier, status,
+                                                        twl->otg.gadget);
+        } else  {
+                twl6030_writeb(twl, TWL_MODULE_USB, USB_ID_INT_EN_HI_CLR,
+                                                                0x10);
+                twl6030_writeb(twl, TWL_MODULE_USB, USB_ID_INT_EN_HI_SET,
+                                                                0x1);
+        }
+        twl6030_writeb(twl, TWL_MODULE_USB, USB_ID_INT_LATCH_CLR, status);
+        twl->linkstat = status;
+
+        return IRQ_HANDLED;
+}
+
+static int twl6030_set_peripheral(struct otg_transceiver *x,
+                struct usb_gadget *gadget)
+{
+        struct twl6030_usb *twl;
+
+        if (!x)
+                return -ENODEV;
+
+        twl = xceiv_to_twl(x);
+        twl->otg.gadget = gadget;
+        if (!gadget)
+                twl->otg.state = OTG_STATE_UNDEFINED;
+
+        return 0;
+}
+
+static int twl6030_enable_irq(struct otg_transceiver *x)
+{
+        struct twl6030_usb *twl = xceiv_to_twl(x);
+
+        twl6030_writeb(twl, TWL_MODULE_USB, USB_ID_INT_EN_HI_SET, 0x1);
+        twl6030_interrupt_unmask(0x05, REG_INT_MSK_LINE_C);
+        twl6030_interrupt_unmask(0x05, REG_INT_MSK_STS_C);
+
+        twl6030_interrupt_unmask(TWL6030_CHARGER_CTRL_INT_MASK,
+                                REG_INT_MSK_LINE_C);
+        twl6030_interrupt_unmask(TWL6030_CHARGER_CTRL_INT_MASK,
+                                REG_INT_MSK_STS_C);
+        twl6030_usb_irq(twl->irq2, twl);
+        twl6030_usbotg_irq(twl->irq1, twl);
+
+        return 0;
+}
+
+static int twl6030_set_vbus(struct otg_transceiver *x, bool enabled)
+{
+        struct twl6030_usb *twl = xceiv_to_twl(x);
+
+        /*
+         * Start driving VBUS. Set OPA_MODE bit in CHARGERUSB_CTRL1
+         * register. This enables boost mode.
+         */
+        if (enabled)
+                twl6030_writeb(twl, TWL_MODULE_MAIN_CHARGE , 0x40,
+                                                CHARGERUSB_CTRL1);
+         else
+                twl6030_writeb(twl, TWL_MODULE_MAIN_CHARGE , 0x00,
+                                                CHARGERUSB_CTRL1);
+        return 0;
+}
+
+static int twl6030_set_host(struct otg_transceiver *x, struct usb_bus *host)
+{
+        struct twl6030_usb *twl;
+
+        if (!x)
+                return -ENODEV;
+
+        twl = xceiv_to_twl(x);
+        twl->otg.host = host;
+        if (!host)
+                twl->otg.state = OTG_STATE_UNDEFINED;
+        return 0;
+}
+
+static int __devinit twl6030_usb_probe(struct platform_device *pdev)
+{
+        struct twl6030_usb      *twl;
+        int                     status, err;
+        struct twl4030_usb_data *pdata;
+        struct device *dev = &pdev->dev;
+        pdata = dev->platform_data;
+
+        twl = kzalloc(sizeof *twl, GFP_KERNEL);
+        if (!twl)
+                return -ENOMEM;
+
+        twl->dev                = &pdev->dev;
+        twl->irq1               = platform_get_irq(pdev, 0);
+        twl->irq2               = platform_get_irq(pdev, 1);
+        twl->otg.dev            = twl->dev;
+        twl->otg.label          = "twl6030";
+        twl->otg.set_host       = twl6030_set_host;
+        twl->otg.set_peripheral = twl6030_set_peripheral;
+        twl->otg.set_vbus       = twl6030_set_vbus;
+        twl->otg.init           = twl6030_phy_init;
+        twl->otg.shutdown       = twl6030_phy_shutdown;
+
+        /* init spinlock for workqueue */
+        spin_lock_init(&twl->lock);
+
+        err = twl6030_usb_ldo_init(twl);
+        if (err) {
+                dev_err(&pdev->dev, "ldo init failed\n");
+                kfree(twl);
+                return err;
+        }
+        otg_set_transceiver(&twl->otg);
+
+        platform_set_drvdata(pdev, twl);
+        if (device_create_file(&pdev->dev, &dev_attr_vbus))
+                dev_warn(&pdev->dev, "could not create sysfs file\n");
+
+        BLOCKING_INIT_NOTIFIER_HEAD(&twl->otg.notifier);
+
+        twl->irq_enabled = true;
+        status = request_threaded_irq(twl->irq1, NULL, twl6030_usbotg_irq,
+                        IRQF_TRIGGER_FALLING | IRQF_TRIGGER_RISING,
+                        "twl6030_usb", twl);
+        if (status < 0) {
+                dev_err(&pdev->dev, "can't get IRQ %d, err %d\n",
+                        twl->irq1, status);
+                device_remove_file(twl->dev, &dev_attr_vbus);
+                kfree(twl);
+                return status;
+        }
+
+        status = request_threaded_irq(twl->irq2, NULL, twl6030_usb_irq,
+                        IRQF_TRIGGER_FALLING | IRQF_TRIGGER_RISING,
+                        "twl6030_usb", twl);
+        if (status < 0) {
+                dev_err(&pdev->dev, "can't get IRQ %d, err %d\n",
+                        twl->irq2, status);
+                free_irq(twl->irq1, twl);
+                device_remove_file(twl->dev, &dev_attr_vbus);
+                kfree(twl);
+                return status;
+        }
+
+        pdata->phy_init(dev);
+        twl6030_enable_irq(&twl->otg);
+        dev_info(&pdev->dev, "Initialized TWL6030 USB module\n");
+
+        return 0;
+}
+
+static int __exit twl6030_usb_remove(struct platform_device *pdev)
+{
+        struct twl6030_usb *twl = platform_get_drvdata(pdev);
+
+        struct twl4030_usb_data *pdata;
+        struct device *dev = &pdev->dev;
+        pdata = dev->platform_data;
+
+        twl6030_interrupt_mask(TWL6030_USBOTG_INT_MASK,
+                REG_INT_MSK_LINE_C);
+        twl6030_interrupt_mask(TWL6030_USBOTG_INT_MASK,
+                        REG_INT_MSK_STS_C);
+        free_irq(twl->irq1, twl);
+        free_irq(twl->irq2, twl);
+        regulator_put(twl->usb3v3);
+        pdata->phy_exit(twl->dev);
+        device_remove_file(twl->dev, &dev_attr_vbus);
+        kfree(twl);
+
+        return 0;
+}
+
+static struct platform_driver twl6030_usb_driver = {
+        .probe          = twl6030_usb_probe,
+        .remove         = __exit_p(twl6030_usb_remove),
+        .driver         = {
+                .name   = "twl6030_usb",
+                .owner  = THIS_MODULE,
+        },
+};
+
+static int __init twl6030_usb_init(void)
+{
+        return platform_driver_register(&twl6030_usb_driver);
+}
+subsys_initcall(twl6030_usb_init);
+
+static void __exit twl6030_usb_exit(void)
+{
+        platform_driver_unregister(&twl6030_usb_driver);
+}
+module_exit(twl6030_usb_exit);
+
+MODULE_ALIAS("platform:twl6030_usb");
+MODULE_AUTHOR("Hema HK <hemahk@ti.com>");
+MODULE_DESCRIPTION("TWL6030 USB transceiver driver");
+MODULE_LICENSE("GPL");