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authorHao Wu <hao.wu@intel.com>2010-12-09 10:37:43 +0000
committerAlan Cox <alan@linux.intel.com>2010-12-09 10:37:43 +0000
commitb92679a8da8a878076bed0e5f63299d9732158fb (patch)
treeb0b62ac7cc0e17bf5643cbc3eac3d6036100ca63
parent7538441b8739d9f1072a3d431ae64c00cce12ef0 (diff)
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usb: penwell_otg: Add Intel Penwell USB OTG Transceiver driver
Description This driver tries to implement host/device role switch according to OTG 2.0 spec on MFLD. The actual host and device functions are accomplished in modified EHCI driver and Intel Penwell USB OTG device controller driver. This is the first version and it only support Host Peripheral role switch per different USB cable. Development work is still on going, more features will be submitted soon after verified. Dependency CONFIG_INTEL_SCU_IPC - IPC driver. Enable driver in Kernel "Device Drivers" ---> "USB support" ---> "Intel Penwell USB OTG dual-role support" Kernel configs CONFIG_INTEL_SCU_IPC=y CONFIG_USB=y CONFIG_USB_OTG=y CONFIG_USB_OTG_UTILS=y CONFIG_PENWELL_OTG=y Todo List USB Charging Support Power management (runtime) MHL-USB coexistence HNP/HNP Polling/SRP ADP(Attach Detection Protocol) Support Signed-off-by: Hao Wu <hao.wu@intel.com>
-rw-r--r--drivers/usb/otg/Kconfig14
-rw-r--r--drivers/usb/otg/Makefile1
-rw-r--r--drivers/usb/otg/penwell_otg.c2328
-rw-r--r--include/linux/usb/penwell_otg.h277
4 files changed, 2620 insertions, 0 deletions
diff --git a/drivers/usb/otg/Kconfig b/drivers/usb/otg/Kconfig
index 5ce07528cd0..fc1c5aaf38a 100644
--- a/drivers/usb/otg/Kconfig
+++ b/drivers/usb/otg/Kconfig
@@ -81,4 +81,18 @@ config USB_LANGWELL_OTG
To compile this driver as a module, choose M here: the
module will be called langwell_otg.
+config USB_PENWELL_OTG
+ tristate "Intel Penwell USB OTG dual-role support"
+ depends on USB && PCI && INTEL_SCU_IPC
+ select USB_OTG
+ select USB_OTG_UTILS
+ help
+ Say Y here if you want to build Intel Penwell USB OTG
+ transciever driver in kernel. This driver implements role
+ switch between EHCI host driver and Penwell USB OTG
+ client driver.
+
+ To compile this driver as a module, choose M here: the
+ module will be called penwell_otg.
+
endif # USB || OTG
diff --git a/drivers/usb/otg/Makefile b/drivers/usb/otg/Makefile
index 66f1b83e4fa..a7571ee0320 100644
--- a/drivers/usb/otg/Makefile
+++ b/drivers/usb/otg/Makefile
@@ -13,5 +13,6 @@ obj-$(CONFIG_USB_GPIO_VBUS) += gpio_vbus.o
obj-$(CONFIG_ISP1301_OMAP) += isp1301_omap.o
obj-$(CONFIG_TWL4030_USB) += twl4030-usb.o
obj-$(CONFIG_USB_LANGWELL_OTG) += langwell_otg.o
+obj-$(CONFIG_USB_PENWELL_OTG) += penwell_otg.o
obj-$(CONFIG_NOP_USB_XCEIV) += nop-usb-xceiv.o
obj-$(CONFIG_USB_ULPI) += ulpi.o
diff --git a/drivers/usb/otg/penwell_otg.c b/drivers/usb/otg/penwell_otg.c
new file mode 100644
index 00000000000..7eca3764314
--- /dev/null
+++ b/drivers/usb/otg/penwell_otg.c
@@ -0,0 +1,2328 @@
+/*
+ * Intel Penwell USB OTG transceiver driver
+ * Copyright (C) 2009 - 2010, Intel Corporation.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope 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.,
+ * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ */
+/* This driver helps to switch Penwell OTG controller function between host
+ * and peripheral. It works with EHCI driver and Penwell client controller
+ * driver together.
+ */
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/pci.h>
+#include <linux/errno.h>
+#include <linux/interrupt.h>
+#include <linux/kernel.h>
+#include <linux/device.h>
+#include <linux/moduleparam.h>
+#include <linux/usb/ch9.h>
+#include <linux/usb/gadget.h>
+#include <linux/usb.h>
+#include <linux/usb/hcd.h>
+#include <linux/usb/otg.h>
+#include <linux/notifier.h>
+#include <linux/delay.h>
+#include <asm/intel_scu_ipc.h>
+#include "../core/usb.h"
+
+#include <linux/usb/penwell_otg.h>
+
+#define DRIVER_DESC "Intel Penwell USB OTG transceiver driver"
+#define DRIVER_VERSION "July 4, 2010"
+
+MODULE_DESCRIPTION(DRIVER_DESC);
+MODULE_AUTHOR("Henry Yuan <hang.yuan@intel.com>, Hao Wu <hao.wu@intel.com>");
+MODULE_VERSION(DRIVER_VERSION);
+MODULE_LICENSE("GPL");
+
+static const char driver_name[] = "penwell_otg";
+
+static int penwell_otg_probe(struct pci_dev *pdev,
+ const struct pci_device_id *id);
+static void penwell_otg_remove(struct pci_dev *pdev);
+static int penwell_otg_suspend(struct pci_dev *pdev, pm_message_t message);
+static int penwell_otg_resume(struct pci_dev *pdev);
+
+static int penwell_otg_set_host(struct otg_transceiver *otg,
+ struct usb_bus *host);
+static int penwell_otg_set_peripheral(struct otg_transceiver *otg,
+ struct usb_gadget *gadget);
+static int penwell_otg_start_srp(struct otg_transceiver *otg);
+
+static const struct pci_device_id pci_ids[] = {{
+ .class = ((PCI_CLASS_SERIAL_USB << 8) | 0x20),
+ .class_mask = ~0,
+ .vendor = 0x8086,
+ .device = 0x0829,
+ .subvendor = PCI_ANY_ID,
+ .subdevice = PCI_ANY_ID,
+}, { /* end: all zeroes */ }
+};
+
+static struct pci_driver otg_pci_driver = {
+ .name = (char *) driver_name,
+ .id_table = pci_ids,
+
+ .probe = penwell_otg_probe,
+ .remove = penwell_otg_remove,
+
+ .suspend = penwell_otg_suspend,
+ .resume = penwell_otg_resume,
+};
+
+static const char *state_string(enum usb_otg_state state)
+{
+ switch (state) {
+ case OTG_STATE_A_IDLE:
+ return "a_idle";
+ case OTG_STATE_A_WAIT_VRISE:
+ return "a_wait_vrise";
+ case OTG_STATE_A_WAIT_BCON:
+ return "a_wait_bcon";
+ case OTG_STATE_A_HOST:
+ return "a_host";
+ case OTG_STATE_A_SUSPEND:
+ return "a_suspend";
+ case OTG_STATE_A_PERIPHERAL:
+ return "a_peripheral";
+ case OTG_STATE_A_WAIT_VFALL:
+ return "a_wait_vfall";
+ case OTG_STATE_A_VBUS_ERR:
+ return "a_vbus_err";
+ case OTG_STATE_B_IDLE:
+ return "b_idle";
+ case OTG_STATE_B_PERIPHERAL:
+ return "b_peripheral";
+ case OTG_STATE_B_WAIT_ACON:
+ return "b_wait_acon";
+ case OTG_STATE_B_HOST:
+ return "b_host";
+ default:
+ return "UNDEFINED";
+ }
+}
+
+static struct penwell_otg *the_transceiver;
+
+void penwell_update_transceiver(void)
+{
+ struct penwell_otg *pnw = the_transceiver;
+
+ dev_dbg(pnw->dev, "transceiver is updated\n");
+
+ if (!pnw->qwork)
+ return ;
+
+ queue_work(pnw->qwork, &pnw->work);
+}
+
+static int penwell_otg_set_host(struct otg_transceiver *otg,
+ struct usb_bus *host)
+{
+ otg->host = host;
+
+ return 0;
+}
+
+static int penwell_otg_set_peripheral(struct otg_transceiver *otg,
+ struct usb_gadget *gadget)
+{
+ otg->gadget = gadget;
+
+ return 0;
+}
+
+static int penwell_otg_set_power(struct otg_transceiver *otg,
+ unsigned mA)
+{
+ return 0;
+}
+
+/* After probe, it should enable the power of USB PHY */
+static void penwell_otg_phy_enable(int on)
+{
+ struct penwell_otg *pnw = the_transceiver;
+ u16 addr;
+ u8 data;
+
+ dev_dbg(pnw->dev, "%s ---> %s\n", __func__, on ? "on" : "off");
+
+ addr = MSIC_VUSB330CNT;
+ data = on ? 0x37 : 0x24;
+
+ if (intel_scu_ipc_iowrite8(addr, data)) {
+ dev_err(pnw->dev, "Fail to access register for"
+ " OTG PHY power - write reg 0x%x failed.\n", addr);
+ return;
+ }
+ dev_dbg(pnw->dev, "%s <---\n", __func__);
+}
+
+/* A-device drives vbus, controlled through MSIC register */
+static int penwell_otg_set_vbus(struct otg_transceiver *otg, bool enabled)
+{
+ struct penwell_otg *pnw = the_transceiver;
+ u16 addr;
+ u8 data, mask;
+
+ dev_dbg(pnw->dev, "%s ---> %s\n", __func__, enabled ? "on" : "off");
+
+ addr = MSIC_VOTGCNT;
+ data = enabled ? VOTGEN : 0;
+ mask = VOTGEN;
+
+ if (intel_scu_ipc_update_register(addr, data, mask)) {
+ dev_err(pnw->dev, "Fail to drive power on OTG Port - "
+ "update register 0x%x failed.\n", addr);
+ return -EBUSY;
+ }
+
+ dev_dbg(pnw->dev, "VOTGCNT val = 0x%x", data);
+ dev_dbg(pnw->dev, "%s <---\n", __func__);
+
+ return 0;
+}
+
+static int penwell_otg_ulpi_run(void)
+{
+ struct penwell_otg *pnw = the_transceiver;
+ u32 val;
+
+ val = readl(pnw->iotg.base + CI_ULPIVP);
+
+ if (val & ULPI_RUN) {
+ dev_dbg(pnw->dev, "%s: ULPI command wip\n", __func__);
+ return 1;
+ }
+
+ dev_dbg(pnw->dev, "%s: ULPI command done\n", __func__);
+ return 0;
+}
+
+/* io_ops to access ulpi registers */
+static int
+penwell_otg_ulpi_read(struct intel_mid_otg_xceiv *iotg, u8 reg, u8 *val)
+{
+ struct penwell_otg *pnw = the_transceiver;
+ u32 val32 = 0;
+ int count;
+
+ dev_dbg(pnw->dev, "%s - addr 0x%x\n", __func__, reg);
+
+ /* Port = 0 */
+ val32 = ULPI_RUN | reg << 16;
+ writel(val32, pnw->iotg.base + CI_ULPIVP);
+
+ /* Polling for write operation to complete*/
+ count = 10;
+
+ while (count) {
+ val32 = readl(pnw->iotg.base + CI_ULPIVP);
+ if (val32 & ULPI_RUN) {
+ count--;
+ udelay(20);
+ } else {
+ *val = (u8)((val32 & ULPI_DATRD) >> 8);
+ dev_dbg(pnw->dev,
+ "%s - done data 0x%x\n", __func__, *val);
+ return 0;
+ }
+ }
+
+ dev_dbg(pnw->dev, "%s - timeout\n", __func__);
+
+ return -ETIMEDOUT;
+
+}
+
+static int
+penwell_otg_ulpi_write(struct intel_mid_otg_xceiv *iotg, u8 reg, u8 val)
+{
+ struct penwell_otg *pnw = the_transceiver;
+ u32 val32 = 0;
+ int count;
+
+ dev_dbg(pnw->dev,
+ "%s - addr 0x%x - data 0x%x\n", __func__, reg, val);
+
+ /* Port = 0 */
+ val32 = ULPI_RUN | ULPI_RW | reg << 16 | val;
+ writel(val32, pnw->iotg.base + CI_ULPIVP);
+
+ /* Polling for write operation to complete*/
+ count = 10;
+
+ while (count && penwell_otg_ulpi_run()) {
+ count--;
+ udelay(20);
+ }
+
+ dev_dbg(pnw->dev,
+ "%s - %s\n", __func__, count ? "complete" : "timeout");
+
+ return count ? 0 : -ETIMEDOUT;
+}
+
+static enum msic_vendor penwell_otg_check_msic(void)
+{
+ /* Return MSIC_VD_TI directly */
+ return MSIC_VD_TI;
+}
+
+/* Start SRP function */
+static int penwell_otg_start_srp(struct otg_transceiver *otg)
+{
+ struct penwell_otg *pnw = the_transceiver;
+ u32 val;
+
+ dev_dbg(pnw->dev, "%s --->\n", __func__);
+
+ val = readl(pnw->iotg.base + CI_OTGSC);
+
+ writel((val & ~OTGSC_INTSTS_MASK) | OTGSC_HADP,
+ pnw->iotg.base + CI_OTGSC);
+
+ /* Check if the data plus is finished or not */
+ msleep(8);
+ val = readl(pnw->iotg.base + CI_OTGSC);
+ if (val & (OTGSC_HADP | OTGSC_DP))
+ dev_dbg(pnw->dev, "DataLine SRP Error\n");
+
+ dev_dbg(pnw->dev, "%s <---\n", __func__);
+ return 0;
+}
+
+/* The timeout callback function to poll the host request flag */
+static void penwell_otg_hnp_poll_fn(unsigned long indicator)
+{
+ struct penwell_otg *pnw = the_transceiver;
+
+ queue_work(pnw->qwork, &pnw->hnp_poll_work);
+}
+
+/* stop SOF via bus_suspend */
+static void penwell_otg_loc_sof(int on)
+{
+ struct penwell_otg *pnw = the_transceiver;
+ struct usb_hcd *hcd;
+ int err;
+
+ dev_dbg(pnw->dev, "%s ---> %s\n", __func__, on ? "suspend" : "resume");
+
+ hcd = bus_to_hcd(pnw->iotg.otg.host);
+ if (on)
+ err = hcd->driver->bus_resume(hcd);
+ else
+ err = hcd->driver->bus_suspend(hcd);
+
+ if (err)
+ dev_dbg(pnw->dev, "Fail to resume/suspend USB bus - %d\n", err);
+
+ dev_dbg(pnw->dev, "%s <---\n", __func__);
+}
+
+static void penwell_otg_phy_low_power(int on)
+{
+ struct penwell_otg *pnw = the_transceiver;
+ u32 val;
+
+ dev_dbg(pnw->dev, "%s ---> %s\n", __func__, on ? "on" : "off");
+
+ val = readl(pnw->iotg.base + CI_HOSTPC1);
+ dev_dbg(pnw->dev, "---> Register CI_HOSTPC1 = %x\n", val);
+
+ if (on) {
+ if (val & HOSTPC1_PHCD) {
+ dev_dbg(pnw->dev, "already in Low power mode\n");
+ return;
+ }
+ writel(val | HOSTPC1_PHCD, pnw->iotg.base + CI_HOSTPC1);
+ } else {
+ if (!(val & HOSTPC1_PHCD)) {
+ dev_dbg(pnw->dev, "already in Normal mode\n");
+ return;
+ }
+ writel(val & ~HOSTPC1_PHCD, pnw->iotg.base + CI_HOSTPC1);
+ }
+
+ val = readl(pnw->iotg.base + CI_HOSTPC1);
+
+ dev_dbg(pnw->dev, "<--- Register CI_HOSTPC1 = %x\n", val);
+ dev_dbg(pnw->dev, "%s <---\n", __func__);
+}
+
+/* Enable/Disable OTG interrupt */
+static void penwell_otg_intr(int on)
+{
+ struct penwell_otg *pnw = the_transceiver;
+ u32 val;
+
+ dev_dbg(pnw->dev, "%s ---> %s\n", __func__, on ? "on" : "off");
+
+ val = readl(pnw->iotg.base + CI_OTGSC);
+ if (on) {
+ val = val | (OTGSC_INTEN_MASK);
+ writel(val, pnw->iotg.base + CI_OTGSC);
+ } else {
+ val = val & ~(OTGSC_INTEN_MASK);
+ writel(val, pnw->iotg.base + CI_OTGSC);
+ }
+}
+
+/* set HAAR: Hardware Assist Auto-Reset */
+static void penwell_otg_HAAR(int on)
+{
+ struct penwell_otg *pnw = the_transceiver;
+ u32 val;
+
+ dev_dbg(pnw->dev, "%s ---> %s\n", __func__, on ? "on" : "off");
+
+ val = readl(pnw->iotg.base + CI_OTGSC);
+ if (on)
+ writel((val & ~OTGSC_INTSTS_MASK) | OTGSC_HAAR,
+ pnw->iotg.base + CI_OTGSC);
+ else
+ writel((val & ~OTGSC_INTSTS_MASK) & ~OTGSC_HAAR,
+ pnw->iotg.base + CI_OTGSC);
+}
+
+/* set HABA: Hardware Assist B-Disconnect to A-Connect */
+static void penwell_otg_HABA(int on)
+{
+ struct penwell_otg *pnw = the_transceiver;
+ u32 val;
+
+ dev_dbg(pnw->dev, "%s ---> %s\n", __func__, on ? "on" : "off");
+
+ val = readl(pnw->iotg.base + CI_OTGSC);
+ if (on)
+ writel((val & ~OTGSC_INTSTS_MASK) | OTGSC_HABA,
+ pnw->iotg.base + CI_OTGSC);
+ else
+ writel((val & ~OTGSC_INTSTS_MASK) & ~OTGSC_HABA,
+ pnw->iotg.base + CI_OTGSC);
+}
+
+void penwell_otg_nsf_msg(unsigned long indicator)
+{
+ switch (indicator) {
+ case 2:
+ case 4:
+ case 6:
+ case 7:
+ dev_warn(the_transceiver->dev,
+ "NSF-%lu - deivce not responding\n", indicator);
+ break;
+ case 3:
+ dev_warn(the_transceiver->dev,
+ "NSF-%lu - deivce not supported\n", indicator);
+ break;
+ default:
+ dev_warn(the_transceiver->dev,
+ "Do not have this kind of NSF\n");
+ break;
+ }
+}
+
+/* The timeout callback function to set time out bit */
+static void penwell_otg_timer_fn(unsigned long indicator)
+{
+ struct penwell_otg *pnw = the_transceiver;
+
+ *(int *)indicator = 1;
+
+ dev_dbg(pnw->dev, "kernel timer - timeout\n");
+
+ queue_work(pnw->qwork, &pnw->work);
+}
+
+/* kernel timer used for OTG timing */
+static void penwell_otg_add_timer(enum penwell_otg_timer_type timers)
+{
+ struct penwell_otg *pnw = the_transceiver;
+ struct intel_mid_otg_xceiv *iotg = &pnw->iotg;
+ unsigned long j = jiffies;
+ unsigned long data, time;
+
+ switch (timers) {
+ case TA_WAIT_VRISE_TMR:
+ iotg->hsm.a_wait_vrise_tmout = 0;
+ data = (unsigned long)&iotg->hsm.a_wait_vrise_tmout;
+ time = TA_WAIT_VRISE;
+ dev_dbg(pnw->dev,
+ "Add timer TA_WAIT_VRISE = %d\n", TA_WAIT_VRISE);
+ break;
+ case TA_WAIT_BCON_TMR:
+ iotg->hsm.a_wait_bcon_tmout = 0;
+ data = (unsigned long)&iotg->hsm.a_wait_bcon_tmout;
+ time = TA_WAIT_BCON;
+ dev_dbg(pnw->dev,
+ "Add timer TA_WAIT_BCON = %d\n", TA_WAIT_BCON);
+ break;
+ case TA_AIDL_BDIS_TMR:
+ iotg->hsm.a_aidl_bdis_tmout = 0;
+ data = (unsigned long)&iotg->hsm.a_aidl_bdis_tmout;
+ time = TA_AIDL_BDIS;
+ dev_dbg(pnw->dev,
+ "Add timer TA_AIDL_BDIS = %d\n", TA_AIDL_BDIS);
+ break;
+ case TA_BIDL_ADIS_TMR:
+ iotg->hsm.a_bidl_adis_tmout = 0;
+ iotg->hsm.a_bidl_adis_tmr = 1;
+ data = (unsigned long)&iotg->hsm.a_bidl_adis_tmout;
+ time = TA_BIDL_ADIS;
+ dev_dbg(pnw->dev,
+ "Add timer TA_BIDL_ADIS = %d\n", TA_BIDL_ADIS);
+ break;
+ case TA_WAIT_VFALL_TMR:
+ iotg->hsm.a_wait_vfall_tmout = 0;
+ data = (unsigned long)&iotg->hsm.a_wait_vfall_tmout;
+ time = TA_WAIT_VFALL;
+ dev_dbg(pnw->dev,
+ "Add timer TA_WAIT_VFALL = %d\n", TA_WAIT_VFALL);
+ break;
+ case TB_ASE0_BRST_TMR:
+ iotg->hsm.b_ase0_brst_tmout = 0;
+ data = (unsigned long)&iotg->hsm.b_ase0_brst_tmout;
+ time = TB_ASE0_BRST;
+ dev_dbg(pnw->dev,
+ "Add timer TB_ASE0_BRST = %d\n", TB_ASE0_BRST);
+ break;
+ case TB_SRP_FAIL_TMR:
+ iotg->hsm.b_srp_fail_tmout = 0;
+ iotg->hsm.b_srp_fail_tmr = 1;
+ data = (unsigned long)&iotg->hsm.b_srp_fail_tmout;
+ time = TB_SRP_FAIL;
+ dev_dbg(pnw->dev,
+ "Add timer TB_SRP_FAIL = %d\n", TB_SRP_FAIL);
+ break;
+ default:
+ dev_dbg(pnw->dev,
+ "unkown timer, can not enable such timer\n");
+ return;
+ }
+
+ init_timer(&pnw->hsm_timer);
+
+ pnw->hsm_timer.data = data;
+ pnw->hsm_timer.function = penwell_otg_timer_fn;
+ pnw->hsm_timer.expires = j + time * HZ / 1000; /* milliseconds */
+
+ add_timer(&pnw->hsm_timer);
+}
+
+static inline void penwell_otg_del_timer(enum penwell_otg_timer_type timers)
+{
+ struct penwell_otg *pnw = the_transceiver;
+ struct intel_mid_otg_xceiv *iotg = &pnw->iotg;
+
+ switch (timers) {
+ case TA_BIDL_ADIS_TMR:
+ iotg->hsm.a_bidl_adis_tmr = 0;
+ break;
+ case TB_SRP_FAIL_TMR:
+ iotg->hsm.b_srp_fail_tmr = 0;
+ break;
+ default:
+ break;
+ }
+
+ dev_dbg(pnw->dev, "state machine timer deleted\n");
+ del_timer_sync(&pnw->hsm_timer);
+}
+
+static void reset_otg(void)
+{
+ struct penwell_otg *pnw = the_transceiver;
+ u32 val;
+ int delay_time = 1000;
+
+ dev_dbg(pnw->dev, "reseting OTG controller ...\n");
+ val = readl(pnw->iotg.base + CI_USBCMD);
+ writel(val | USBCMD_RST, pnw->iotg.base + CI_USBCMD);
+ do {
+ udelay(100);
+ if (!delay_time--)
+ dev_dbg(pnw->dev, "reset timeout\n");
+ val = readl(pnw->iotg.base + CI_USBCMD);
+ val &= USBCMD_RST;
+ } while (val != 0);
+ dev_dbg(pnw->dev, "reset done.\n");
+}
+
+static void set_host_mode(void)
+{
+ u32 val;
+
+ reset_otg();
+ val = readl(the_transceiver->iotg.base + CI_USBMODE);
+ val = (val & (~USBMODE_CM)) | USBMODE_HOST;
+ writel(val, the_transceiver->iotg.base + CI_USBMODE);
+}
+
+static void set_client_mode(void)
+{
+ u32 val;
+
+ reset_otg();
+ val = readl(the_transceiver->iotg.base + CI_USBMODE);
+ val = (val & (~USBMODE_CM)) | USBMODE_DEVICE;
+ writel(val, the_transceiver->iotg.base + CI_USBMODE);
+}
+
+static void init_hsm(void)
+{
+ struct penwell_otg *pnw = the_transceiver;
+ struct intel_mid_otg_xceiv *iotg = &pnw->iotg;
+ u32 val32;
+
+ /* read OTGSC after reset */
+ val32 = readl(iotg->base + CI_OTGSC);
+ dev_dbg(pnw->dev,
+ "%s: OTGSC init value = 0x%x\n", __func__, val32);
+
+ /* set init state */
+ if (val32 & OTGSC_ID) {
+ iotg->hsm.id = ID_B;
+ iotg->otg.default_a = 0;
+ set_client_mode();
+ iotg->otg.state = OTG_STATE_B_IDLE;
+ } else {
+ iotg->hsm.id = ID_A;
+ iotg->otg.default_a = 1;
+ set_host_mode();
+ iotg->otg.state = OTG_STATE_A_IDLE;
+ }
+
+ /* set session indicator */
+ if (val32 & OTGSC_BSE)
+ iotg->hsm.b_sess_end = 1;
+ if (val32 & OTGSC_BSV)
+ iotg->hsm.b_sess_vld = 1;
+ if (val32 & OTGSC_ASV)
+ iotg->hsm.a_sess_vld = 1;
+ if (val32 & OTGSC_AVV)
+ iotg->hsm.a_vbus_vld = 1;
+
+ /* default user is not request the bus */
+ iotg->hsm.a_bus_req = 1;
+ iotg->hsm.a_bus_drop = 0;
+ /* init hsm means power_up case */
+ iotg->hsm.power_up = 0;
+ /* defautly don't request bus as B device */
+ iotg->hsm.b_bus_req = 0;
+ /* no system error */
+ iotg->hsm.a_clr_err = 0;
+
+ penwell_otg_phy_low_power(1);
+
+}
+
+static void update_hsm(void)
+{
+ struct penwell_otg *pnw = the_transceiver;
+ struct intel_mid_otg_xceiv *iotg = &pnw->iotg;
+ u32 val32;
+
+ /* read OTGSC */
+ val32 = readl(iotg->base + CI_OTGSC);
+ dev_dbg(pnw->dev,
+ "%s OTGSC current value = 0x%x\n", __func__, val32);
+
+ iotg->hsm.id = !!(val32 & OTGSC_ID) ? ID_B : ID_A;
+ iotg->hsm.b_sess_end = !!(val32 & OTGSC_BSE);
+ iotg->hsm.b_sess_vld = !!(val32 & OTGSC_BSV);
+ iotg->hsm.a_sess_vld = !!(val32 & OTGSC_ASV);
+ iotg->hsm.a_vbus_vld = !!(val32 & OTGSC_AVV);
+}
+
+static irqreturn_t otg_irq(int irq, void *_dev)
+{
+ struct penwell_otg *pnw = _dev;
+ struct intel_mid_otg_xceiv *iotg = &pnw->iotg;
+ int flag = 0;
+ u32 int_sts, int_en, int_mask = 0;
+
+ /* Check VBUS/SRP interrup */
+ int_sts = readl(pnw->iotg.base + CI_OTGSC);
+ int_en = (int_sts & OTGSC_INTEN_MASK) >> 8;
+ int_mask = int_sts & int_en;
+
+ if (int_mask) {
+ dev_dbg(pnw->dev,
+ "OTGSC = 0x%x, mask =0x%x\n", int_sts, int_mask);
+
+ /* FIXME: if ACA/ID interrupt is enabled, */
+ if (int_mask & OTGSC_IDIS) {
+ iotg->hsm.id = (int_sts & OTGSC_ID) ? ID_B : ID_A;
+ flag = 1;
+ dev_dbg(pnw->dev, "%s: id change int = %d\n",
+ __func__, iotg->hsm.id);
+ }
+ if (int_mask & OTGSC_DPIS) {
+ iotg->hsm.a_srp_det = (int_sts & OTGSC_DPS) ? 1 : 0;
+ flag = 1;
+ dev_dbg(pnw->dev, "%s: data pulse int = %d\n",
+ __func__, iotg->hsm.a_srp_det);
+ }
+ if (int_mask & OTGSC_BSEIS) {
+ iotg->hsm.b_sess_end = (int_sts & OTGSC_BSE) ? 1 : 0;
+ flag = 1;
+ dev_dbg(pnw->dev, "%s: b sess end int = %d\n",
+ __func__, iotg->hsm.b_sess_end);
+ }
+ if (int_mask & OTGSC_BSVIS) {
+ iotg->hsm.b_sess_vld = (int_sts & OTGSC_BSV) ? 1 : 0;
+ flag = 1;
+ dev_dbg(pnw->dev, "%s: b sess valid int = %d\n",
+ __func__, iotg->hsm.b_sess_vld);
+ }
+ if (int_mask & OTGSC_ASVIS) {
+ iotg->hsm.a_sess_vld = (int_sts & OTGSC_ASV) ? 1 : 0;
+ flag = 1;
+ dev_dbg(pnw->dev, "%s: a sess valid int = %d\n",
+ __func__, iotg->hsm.a_sess_vld);
+ }
+ if (int_mask & OTGSC_AVVIS) {
+ iotg->hsm.a_vbus_vld = (int_sts & OTGSC_AVV) ? 1 : 0;
+ flag = 1;
+ dev_dbg(pnw->dev, "%s: a vbus valid int = %d\n",
+ __func__, iotg->hsm.a_vbus_vld);
+ }
+
+ writel((int_sts & ~OTGSC_INTSTS_MASK) | int_mask,
+ pnw->iotg.base + CI_OTGSC);
+ }
+
+ if (flag)
+ penwell_update_transceiver();
+
+ return IRQ_HANDLED;
+}
+
+static int penwell_otg_iotg_notify(struct notifier_block *nb,
+ unsigned long action, void *data)
+{
+ struct penwell_otg *pnw = the_transceiver;
+ struct intel_mid_otg_xceiv *iotg = data;
+ int flag = 0;
+
+ if (iotg == NULL)
+ return NOTIFY_BAD;
+
+ if (pnw == NULL)
+ return NOTIFY_BAD;
+
+ switch (action) {
+ case MID_OTG_NOTIFY_CONNECT:
+ dev_dbg(pnw->dev, "PNW OTG Notify Connect Event\n");
+ if (iotg->otg.default_a == 1)
+ iotg->hsm.b_conn = 1;
+ else
+ iotg->hsm.a_conn = 1;
+ flag = 1;
+ break;
+ case MID_OTG_NOTIFY_DISCONN:
+ dev_dbg(pnw->dev, "PNW OTG Notify Disconnect Event\n");
+ if (iotg->otg.default_a == 1)
+ iotg->hsm.b_conn = 0;
+ else
+ iotg->hsm.a_conn = 0;
+ flag = 1;
+ break;
+ case MID_OTG_NOTIFY_HSUSPEND:
+ dev_dbg(pnw->dev, "PNW OTG Notify Host Bus suspend Event\n");
+ flag = 0;
+ break;
+ case MID_OTG_NOTIFY_HRESUME:
+ dev_dbg(pnw->dev, "PNW OTG Notify Host Bus resume Event\n");
+ flag = 0;
+ break;
+ case MID_OTG_NOTIFY_CSUSPEND:
+ dev_dbg(pnw->dev, "PNW OTG Notify Client Bus suspend Event\n");
+ flag = 0;
+ break;
+ case MID_OTG_NOTIFY_CRESUME:
+ dev_dbg(pnw->dev, "PNW OTG Notify Client Bus resume Event\n");
+ flag = 0;
+ break;
+ case MID_OTG_NOTIFY_HOSTADD:
+ dev_dbg(pnw->dev, "PNW OTG Nofity Host Driver Add\n");
+ flag = 1;
+ break;
+ case MID_OTG_NOTIFY_HOSTREMOVE:
+ dev_dbg(pnw->dev, "PNW OTG Nofity Host Driver remove\n");
+ flag = 1;
+ break;
+ case MID_OTG_NOTIFY_CLIENTADD:
+ dev_dbg(pnw->dev, "PNW OTG Nofity Client Driver Add\n");
+ flag = 1;
+ break;
+ case MID_OTG_NOTIFY_CLIENTREMOVE:
+ dev_dbg(pnw->dev, "PNW OTG Nofity Client Driver remove\n");
+ flag = 1;
+ break;
+ default:
+ dev_dbg(pnw->dev, "PNW OTG Nofity unknown notify message\n");
+ return NOTIFY_DONE;
+ }
+
+ if (flag)
+ penwell_update_transceiver();
+
+ return NOTIFY_OK;
+}
+
+
+static void penwell_otg_hnp_poll_work(struct work_struct *work)
+{
+ struct penwell_otg *pnw = the_transceiver;
+ struct intel_mid_otg_xceiv *iotg = &pnw->iotg;
+ struct usb_device *udev;
+ unsigned long j = jiffies;
+ int err = 0;
+ u8 data;
+
+ if (iotg->otg.host && iotg->otg.host->root_hub) {
+ udev = iotg->otg.host->root_hub->children[0];
+ } else {
+ dev_dbg(pnw->dev, "no host or root_hub registered\n");
+ return;
+ }
+
+ if (iotg->otg.state != OTG_STATE_A_HOST
+ && iotg->otg.state != OTG_STATE_B_HOST)
+ return;
+
+ if (!udev) {
+ dev_dbg(pnw->dev,
+ "no usb dev connected, stop HNP polling\n");
+ return;
+ }
+
+ /* get host request flag from connected USB device */
+ err = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0),
+ USB_REQ_GET_STATUS, USB_DIR_IN, 0, 0xF000, &data, 1, 5000);
+
+ if (err < 0) {
+ dev_warn(pnw->dev,
+ "ERR in HNP polling = %d, stop HNP polling\n", err);
+ return ;
+ }
+
+ if (data & HOST_REQUEST_FLAG) {
+ /* set a_bus_req = 0 */
+ if (iotg->hsm.id == ID_B) {
+ dev_dbg(pnw->dev,
+ "Device B host - start HNP - b_bus_req = 0\n");
+ iotg->hsm.b_bus_req = 0;
+ } else if (iotg->hsm.id == ID_A) {
+ dev_dbg(pnw->dev,
+ "Device A host - start HNP - a_bus_req = 0\n");
+ iotg->hsm.a_bus_req = 0;
+ }
+ penwell_update_transceiver();
+ } else {
+ pnw->hnp_poll_timer.data = 1;
+ pnw->hnp_poll_timer.function = penwell_otg_hnp_poll_fn;
+ pnw->hnp_poll_timer.expires = j + THOS_REQ_POL * HZ / 1000;
+ add_timer(&pnw->hnp_poll_timer);
+
+ dev_dbg(pnw->dev, "HNP Polling - continue\n");
+ }
+}
+
+static void penwell_otg_work(struct work_struct *work)
+{
+ struct penwell_otg *pnw = container_of(work,
+ struct penwell_otg, work);
+ struct intel_mid_otg_xceiv *iotg = &pnw->iotg;
+ struct otg_hsm *hsm = &iotg->hsm;
+
+ dev_dbg(pnw->dev,
+ "old state = %s\n", state_string(iotg->otg.state));
+
+ switch (iotg->otg.state) {
+ case OTG_STATE_UNDEFINED:
+ case OTG_STATE_B_IDLE:
+ if (hsm->id == ID_A || hsm->id == ID_ACA_A) {
+ /* Move to A_IDLE state, ID changes */
+
+ /* Delete current timer */
+ penwell_otg_del_timer(TB_SRP_FAIL_TMR);
+
+ iotg->otg.default_a = 1;
+ hsm->a_srp_det = 0;
+ set_host_mode();
+ penwell_otg_phy_low_power(1);
+
+ /* Always set a_bus_req to 1, in case no ADP */
+ hsm->a_bus_req = 1;
+
+ iotg->otg.state = OTG_STATE_A_IDLE;
+ penwell_update_transceiver();
+ } else if (hsm->b_adp_sense_tmout) {
+ hsm->b_adp_sense_tmout = 0;
+ } else if (hsm->b_srp_fail_tmout) {
+ hsm->b_srp_fail_tmr = 0;
+ hsm->b_srp_fail_tmout = 0;
+ hsm->b_bus_req = 0;
+ penwell_otg_nsf_msg(6);
+
+ penwell_update_transceiver();
+ } else if (hsm->b_sess_vld) {
+ /* Check it is caused by ACA attachment */
+ if (hsm->id == ID_ACA_B) {
+ /* in this case, update current limit*/
+ if (iotg->otg.set_power)
+ iotg->otg.set_power(&iotg->otg, 1500);
+
+ /* make sure PHY low power state */
+ penwell_otg_phy_low_power(1);
+ break;
+ } else if (hsm->id == ID_ACA_C) {
+ /* in this case, update current limit*/
+ if (iotg->otg.set_power)
+ iotg->otg.set_power(&iotg->otg, 1500);
+ }
+
+ /* Clear power_up */
+ if (hsm->power_up)
+ hsm->power_up = 0;
+
+ /* Move to B_PERIPHERAL state, Session Valid */
+
+ /* Delete current timer */
+ penwell_otg_del_timer(TB_SRP_FAIL_TMR);
+
+ hsm->b_sess_end = 0;
+ hsm->a_bus_suspend = 0;
+
+ if (iotg->start_peripheral) {
+ iotg->start_peripheral(iotg);
+ iotg->otg.state = OTG_STATE_B_PERIPHERAL;
+ } else {
+ dev_dbg(pnw->dev, "client driver not loaded\n");
+ break;
+ }
+
+ } else if ((hsm->b_bus_req || hsm->power_up ||
+ hsm->adp_change) && !hsm->b_srp_fail_tmr) {
+ if ((hsm->b_ssend_srp && hsm->b_se0_srp) ||
+ hsm->adp_change || hsm->power_up) {
+
+ if (hsm->power_up)
+ hsm->power_up = 0;
+
+ if (hsm->adp_change)
+ hsm->adp_change = 0;
+
+ /* clear the PHCD before start srp */
+ penwell_otg_phy_low_power(0);
+
+ /* Start SRP */
+ if (pnw->iotg.otg.start_srp)
+ pnw->iotg.otg.start_srp(&pnw->iotg.otg);
+ penwell_otg_add_timer(TB_SRP_FAIL_TMR);
+
+ /* reset PHY low power mode here */
+ penwell_otg_phy_low_power(1);
+ } else {
+ hsm->b_bus_req = 0;
+ dev_info(pnw->dev,
+ "BUS is active, try SRP later\n");
+ }
+ } else if (!hsm->b_sess_vld && hsm->id == ID_B) {
+ if (iotg->otg.set_power)
+ iotg->otg.set_power(&iotg->otg, 0);
+ penwell_otg_phy_low_power(1);
+ }
+ break;
+
+ case OTG_STATE_B_PERIPHERAL:
+ /* FIXME: Check if ID_ACA_A event will happened in this state */
+ if (hsm->id == ID_A) {
+ iotg->otg.default_a = 1;
+ hsm->a_srp_det = 0;
+
+ if (iotg->stop_peripheral)
+ iotg->stop_peripheral(iotg);
+ else
+ dev_dbg(pnw->dev,
+ "client driver has been removed.\n");
+
+ set_host_mode();
+ penwell_otg_phy_low_power(1);
+
+ /* Always set a_bus_req to 1, in case no ADP */
+ hsm->a_bus_req = 1;
+
+ iotg->otg.state = OTG_STATE_A_IDLE;
+ penwell_update_transceiver();
+ } else if (!hsm->b_sess_vld || hsm->id == ID_ACA_B) {
+ if (hsm->id == ID_ACA_B && iotg->otg.set_power)
+ iotg->otg.set_power(&iotg->otg, 1500);
+ else if (hsm->id == ID_B && iotg->otg.set_power)
+ iotg->otg.set_power(&iotg->otg, 0);
+
+ hsm->b_hnp_enable = 0;
+
+ if (iotg->stop_peripheral)
+ iotg->stop_peripheral(iotg);
+ else
+ dev_dbg(pnw->dev,
+ "client driver has been removed.\n");
+
+ hsm->b_ssend_srp = 1;
+ hsm->b_se0_srp = 1;
+ penwell_otg_phy_low_power(1);
+
+ iotg->otg.state = OTG_STATE_B_IDLE;
+ } else if (hsm->b_bus_req && hsm->b_hnp_enable
+ && hsm->a_bus_suspend) {
+
+ if (iotg->stop_peripheral)
+ iotg->stop_peripheral(iotg);
+ else
+ dev_dbg(pnw->dev,
+ "client driver has been removed.\n");
+
+ penwell_otg_HAAR(1);
+ hsm->a_conn = 0;
+ hsm->a_bus_resume = 0;
+
+ if (iotg->start_host) {
+ iotg->start_host(iotg);
+ hsm->test_device = 0;
+ iotg->otg.state = OTG_STATE_B_WAIT_ACON;
+ } else
+ dev_dbg(pnw->dev, "host driver not loaded.\n");
+
+ penwell_otg_add_timer(TB_ASE0_BRST_TMR);
+ } else if (hsm->id == ID_ACA_C) {
+ /* Make sure current limit updated */
+ if (iotg->otg.set_power)
+ iotg->otg.set_power(&iotg->otg, 1500);
+ } else if (hsm->id == ID_B) {
+ if (iotg->otg.set_power)
+ iotg->otg.set_power(&iotg->otg, 100);
+ }
+ break;
+
+ case OTG_STATE_B_WAIT_ACON:
+ if (hsm->id == ID_A) {
+ /* Move to A_IDLE state, ID changes */
+
+ /* Delete current timer */
+ penwell_otg_del_timer(TB_ASE0_BRST_TMR);
+
+ iotg->otg.default_a = 1;
+ hsm->a_srp_det = 0;
+
+ penwell_otg_HAAR(0);
+ if (iotg->stop_host)
+ iotg->stop_host(iotg);
+ else
+ dev_dbg(pnw->dev,
+ "host driver has been removed.\n");
+
+ set_host_mode();
+ penwell_otg_phy_low_power(1);
+
+ /* Always set a_bus_req to 1, in case no ADP */
+ iotg->hsm.a_bus_req = 1;
+
+ iotg->otg.state = OTG_STATE_A_IDLE;
+ penwell_update_transceiver();
+ } else if (!hsm->b_sess_vld || hsm->id == ID_ACA_B) {
+ /* Move to B_IDLE state, VBUS off */
+
+ if (hsm->id == ID_ACA_B && iotg->otg.set_power)
+ iotg->otg.set_power(&iotg->otg, 1500);
+ else if (hsm->id == ID_B)
+ iotg->otg.set_power(&iotg->otg, 0);
+
+ /* Delete current timer */
+ penwell_otg_del_timer(TB_ASE0_BRST_TMR);
+
+ hsm->b_hnp_enable = 0;
+ hsm->b_bus_req = 0;
+ penwell_otg_HAAR(0);
+
+ if (iotg->stop_host)
+ iotg->stop_host(iotg);
+ else
+ dev_dbg(pnw->dev,
+ "host driver has been removed.\n");
+
+ set_client_mode();
+ penwell_otg_phy_low_power(1);
+
+ hsm->b_ssend_srp = 1;
+ hsm->b_se0_srp = 1;
+
+ iotg->otg.state = OTG_STATE_B_IDLE;
+ } else if (hsm->a_conn) {
+ /* Move to B_HOST state, A connected */
+
+ /* Delete current timer */
+ penwell_otg_del_timer(TB_ASE0_BRST_TMR);
+
+ penwell_otg_HAAR(0);
+ iotg->otg.state = OTG_STATE_B_HOST;
+ penwell_update_transceiver();
+ } else if (hsm->a_bus_resume || hsm->b_ase0_brst_tmout) {
+ /* Move to B_HOST state, A connected */
+
+ /* Delete current timer */
+ penwell_otg_del_timer(TB_ASE0_BRST_TMR);
+
+ penwell_otg_HAAR(0);
+ penwell_otg_nsf_msg(7);
+
+ if (iotg->stop_host)
+ iotg->stop_host(iotg);
+ else
+ dev_dbg(pnw->dev,
+ "host driver has been removed.\n");
+
+ hsm->a_bus_suspend = 0;
+ hsm->b_bus_req = 0;
+
+ if (iotg->start_peripheral)
+ iotg->start_peripheral(iotg);
+ else
+ dev_dbg(pnw->dev, "client driver not loaded\n");
+
+ iotg->otg.state = OTG_STATE_B_PERIPHERAL;
+ } else if (hsm->id == ID_ACA_C) {
+ /* Make sure current limit updated */
+ if (iotg->otg.set_power)
+ iotg->otg.set_power(&iotg->otg, 1500);
+ } else if (hsm->id == ID_B) {
+ /* only set 2mA due to client function stopped */
+ if (iotg->otg.set_power)
+ iotg->otg.set_power(&iotg->otg, 2);
+ }
+ break;
+
+ case OTG_STATE_B_HOST:
+ if (hsm->id == ID_A) {
+ iotg->otg.default_a = 1;
+ hsm->a_srp_det = 0;
+
+ if (iotg->stop_host)
+ iotg->stop_host(iotg);
+ else
+ dev_dbg(pnw->dev,
+ "host driver has been removed.\n");
+
+ set_host_mode();
+ penwell_otg_phy_low_power(1);
+
+ /* Always set a_bus_req to 1, in case no ADP */
+ hsm->a_bus_req = 1;
+
+ iotg->otg.state = OTG_STATE_A_IDLE;
+ penwell_update_transceiver();
+ } else if (!hsm->b_sess_vld || hsm->id == ID_ACA_B) {
+ if (hsm->id == ID_ACA_B && iotg->otg.set_power)
+ iotg->otg.set_power(&iotg->otg, 1500);
+ else if (hsm->id == ID_B && iotg->otg.set_power)
+ iotg->otg.set_power(&iotg->otg, 0);
+
+ hsm->b_hnp_enable = 0;
+ hsm->b_bus_req = 0;
+
+ if (iotg->stop_host)
+ iotg->stop_host(iotg);
+ else
+ dev_dbg(pnw->dev,
+ "host driver has been removed.\n");
+
+ set_client_mode();
+ penwell_otg_phy_low_power(1);
+
+ hsm->b_ssend_srp = 1;
+ hsm->b_se0_srp = 1;
+
+ iotg->otg.state = OTG_STATE_B_IDLE;
+ } else if (!hsm->b_bus_req || !hsm->a_conn
+ || hsm->test_device) {
+ hsm->b_bus_req = 0;
+
+ if (iotg->stop_host)
+ iotg->stop_host(iotg);
+ else
+ dev_dbg(pnw->dev,
+ "host driver has been removed.\n");
+
+ hsm->a_bus_suspend = 0;
+
+ if (iotg->start_peripheral)
+ iotg->start_peripheral(iotg);
+ else
+ dev_dbg(pnw->dev,
+ "client driver not loaded.\n");
+
+ iotg->otg.state = OTG_STATE_B_PERIPHERAL;
+ } else if (hsm->id == ID_ACA_C) {
+ /* Make sure current limit updated */
+ if (iotg->otg.set_power)
+ iotg->otg.set_power(&iotg->otg, 1500);
+ } else if (hsm->id == ID_B) {
+ if (iotg->otg.set_power)
+ iotg->otg.set_power(&iotg->otg, 100);
+ }
+ break;
+
+ case OTG_STATE_A_IDLE:
+ if (hsm->id == ID_B || hsm->id == ID_ACA_B) {
+ pnw->iotg.otg.default_a = 0;
+ hsm->b_bus_req = 0;
+
+ if (hsm->id == ID_ACA_B && iotg->otg.set_power)
+ iotg->otg.set_power(&iotg->otg, 1500);
+
+ set_client_mode();
+ msleep(5);
+ penwell_otg_phy_low_power(1);
+
+ hsm->b_ssend_srp = 1;
+ hsm->b_se0_srp = 1;
+
+ iotg->otg.state = OTG_STATE_B_IDLE;
+ penwell_update_transceiver();
+ } else if (hsm->id == ID_ACA_A) {
+
+ if (iotg->otg.set_power)
+ iotg->otg.set_power(&iotg->otg, 1500);
+
+ if (hsm->power_up)
+ hsm->power_up = 0;
+
+ if (hsm->adp_change)
+ hsm->adp_change = 0;
+
+ if (hsm->a_srp_det)
+ hsm->a_srp_det = 0;
+
+ hsm->b_conn = 0;
+ hsm->hnp_poll_enable = 0;
+
+ if (iotg->start_host)
+ iotg->start_host(iotg);
+ else {
+ dev_dbg(pnw->dev, "host driver not loaded.\n");
+ break;
+ }
+ iotg->otg.state = OTG_STATE_A_WAIT_BCON;
+ } else if (!hsm->a_bus_drop && (hsm->power_up || hsm->a_bus_req
+ || hsm->power_up || hsm->adp_change)) {
+ /* power up / adp changes / srp detection should be
+ * cleared at once after handled. */
+ if (hsm->power_up)
+ hsm->power_up = 0;
+
+ if (hsm->adp_change)
+ hsm->adp_change = 0;
+
+ if (hsm->a_srp_det)
+ hsm->a_srp_det = 0;
+
+ if (iotg->otg.set_vbus)
+ iotg->otg.set_vbus(&iotg->otg, true);
+
+ penwell_otg_add_timer(TA_WAIT_VRISE_TMR);
+ iotg->otg.state = OTG_STATE_A_WAIT_VRISE;
+
+ penwell_update_transceiver();
+ } else if (hsm->b_sess_end || hsm->a_sess_vld ||
+ !hsm->b_sess_vld) {
+ dev_dbg(pnw->dev,
+ "reconfig...PHCD bit for PHY low power mode\n");
+ penwell_otg_phy_low_power(1);
+ }
+ break;
+
+ case OTG_STATE_A_WAIT_VRISE:
+ if (hsm->a_bus_drop ||
+ hsm->id == ID_B || hsm->id == ID_ACA_B) {
+ /* Move to A_WAIT_VFALL, over current/user request */
+
+ /* Delete current timer */
+ penwell_otg_del_timer(TA_WAIT_VRISE_TMR);
+
+ /* Turn off VBUS */
+ if (iotg->otg.set_vbus)
+ iotg->otg.set_vbus(&iotg->otg, false);
+
+ penwell_otg_add_timer(TA_WAIT_VFALL_TMR);
+ iotg->otg.state = OTG_STATE_A_WAIT_VFALL;
+ } else if (hsm->a_wait_vrise_tmout || hsm->id == ID_ACA_A) {
+ /* Move to A_WAIT_BCON state, a vbus vld */
+ /* Delete current timer and clear flags */
+ penwell_otg_del_timer(TA_WAIT_VRISE_TMR);
+
+ if (!hsm->a_vbus_vld) {
+ /* Turn off VBUS */
+ if (iotg->otg.set_vbus)
+ iotg->otg.set_vbus(&iotg->otg, false);
+ penwell_otg_add_timer(TA_WAIT_VFALL_TMR);
+ iotg->otg.state = OTG_STATE_A_WAIT_VFALL;
+ break;
+ }
+
+ if (hsm->id == ID_ACA_A) {
+ if (iotg->otg.set_vbus)
+ iotg->otg.set_vbus(&iotg->otg, false);
+ if (iotg->otg.set_power)
+ iotg->otg.set_power(&iotg->otg, 1500);
+ }
+
+ hsm->b_conn = 0;
+ hsm->hnp_poll_enable = 0;
+
+ if (iotg->start_host) {
+ dev_dbg(pnw->dev, "host_ops registered!\n");
+ iotg->start_host(iotg);
+ } else {
+ dev_dbg(pnw->dev, "host driver not loaded.\n");
+ break;
+ }
+
+ iotg->otg.state = OTG_STATE_A_WAIT_BCON;
+ }
+ break;
+ case OTG_STATE_A_WAIT_BCON:
+ if (hsm->id == ID_B || hsm->id == ID_ACA_B || hsm->a_bus_drop) {
+ /* Move to A_WAIT_VFALL state, user request */
+
+ /* Delete current timer and clear flags for B-Device */
+ penwell_otg_del_timer(TA_WAIT_BCON_TMR);
+
+ hsm->b_bus_req = 0;
+
+ if (iotg->stop_host)
+ iotg->stop_host(iotg);
+ else
+ dev_dbg(pnw->dev,
+ "host driver has been removed.\n");
+
+ /* Turn off VBUS */
+ if (iotg->otg.set_vbus)
+ iotg->otg.set_vbus(&iotg->otg, false);
+
+ penwell_otg_add_timer(TA_WAIT_VFALL_TMR);
+ iotg->otg.state = OTG_STATE_A_WAIT_VFALL;
+ } else if (!hsm->a_vbus_vld) {
+ /* Move to A_VBUS_ERR state, over-current detected */
+
+ /* Delete current timer and disable host function */
+ penwell_otg_del_timer(TA_WAIT_BCON_TMR);
+
+ if (iotg->otg.set_power)
+ iotg->otg.set_power(&iotg->otg, 0);
+
+ if (iotg->stop_host)
+ iotg->stop_host(iotg);
+ else
+ dev_dbg(pnw->dev,
+ "host driver has been removed.\n");
+
+ /* Turn off VBUS and enter PHY low power mode */
+ if (iotg->otg.set_vbus)
+ iotg->otg.set_vbus(&iotg->otg, false);
+
+ penwell_otg_phy_low_power(1);
+ iotg->otg.state = OTG_STATE_A_VBUS_ERR;
+ } else if (hsm->b_conn) {
+ /* Move to A_HOST state, device connected */
+
+ /* Delete current timer and disable host function */
+ penwell_otg_del_timer(TA_WAIT_BCON_TMR);
+
+ iotg->otg.state = OTG_STATE_A_HOST;
+
+ if (!hsm->a_bus_req)
+ hsm->a_bus_req = 1;
+ } else if (hsm->id == ID_ACA_A) {
+ if (iotg->otg.set_power)
+ iotg->otg.set_power(&iotg->otg, 1500);
+
+ /* Turn off VBUS */
+ if (iotg->otg.set_vbus)
+ iotg->otg.set_vbus(&iotg->otg, false);
+ }
+ break;
+
+ case OTG_STATE_A_HOST:
+ if (hsm->id == ID_B || hsm->id == ID_ACA_B || hsm->a_bus_drop) {
+ /* Move to A_WAIT_VFALL state, timeout/user request */
+ if (hsm->id == ID_ACA_B && iotg->otg.set_power)
+ iotg->otg.set_power(&iotg->otg, 1500);
+
+ if (iotg->stop_host)
+ iotg->stop_host(iotg);
+ else
+ dev_dbg(pnw->dev,
+ "host driver has been removed.\n");
+
+ /* Turn off VBUS */
+ if (iotg->otg.set_vbus)
+ iotg->otg.set_vbus(&iotg->otg, false);
+
+ penwell_otg_add_timer(TA_WAIT_VFALL_TMR);
+ iotg->otg.state = OTG_STATE_A_WAIT_VFALL;
+ } else if (!hsm->a_vbus_vld) {
+ /* Move to A_VBUS_ERR state */
+
+ if (iotg->otg.set_power)
+ iotg->otg.set_power(&iotg->otg, 0);
+
+ if (iotg->stop_host)
+ iotg->stop_host(iotg);
+ else
+ dev_dbg(pnw->dev,
+ "host driver has been removed.\n");
+
+ /* Turn off VBUS */
+ if (iotg->otg.set_vbus)
+ iotg->otg.set_vbus(&iotg->otg, false);
+
+ penwell_otg_phy_low_power(1);
+ iotg->otg.state = OTG_STATE_A_VBUS_ERR;
+ } else if (!hsm->a_bus_req) {
+ /* Move to A_SUSPEND state */
+
+ penwell_otg_loc_sof(0);
+
+ if (iotg->otg.host->b_hnp_enable) {
+ /* According to Spec 7.1.5 */
+ penwell_otg_add_timer(TA_AIDL_BDIS_TMR);
+ }
+
+ iotg->otg.state = OTG_STATE_A_SUSPEND;
+ } else if (!hsm->b_conn) {
+ hsm->hnp_poll_enable = 0;
+ /* add kernel timer */
+ iotg->otg.state = OTG_STATE_A_WAIT_BCON;
+ } else if (hsm->id == ID_ACA_A) {
+ if (iotg->otg.set_power)
+ iotg->otg.set_power(&iotg->otg, 1500);
+
+ /* Turn off VBUS */
+ if (iotg->otg.set_vbus)
+ iotg->otg.set_vbus(&iotg->otg, false);
+ }
+ break;
+
+ case OTG_STATE_A_SUSPEND:
+ if (hsm->id == ID_B || hsm->id == ID_ACA_B ||
+ hsm->a_bus_drop || hsm->a_aidl_bdis_tmout) {
+ /* Move to A_WAIT_VFALL state, timeout/user request */
+
+ /* Delete current timer and clear HW assist */
+ if (hsm->a_aidl_bdis_tmout)
+ hsm->a_aidl_bdis_tmout = 0;
+ penwell_otg_del_timer(TA_AIDL_BDIS_TMR);
+
+ if (hsm->id == ID_ACA_B && iotg->otg.set_power)
+ iotg->otg.set_power(&iotg->otg, 1500);
+
+ if (iotg->stop_host)
+ iotg->stop_host(iotg);
+ else
+ dev_dbg(pnw->dev,
+ "host driver has been removed.\n");
+
+ /* Turn off VBUS */
+ if (iotg->otg.set_vbus)
+ iotg->otg.set_vbus(&iotg->otg, false);
+
+ penwell_otg_add_timer(TA_WAIT_VFALL_TMR);
+ iotg->otg.state = OTG_STATE_A_WAIT_VFALL;
+ } else if (!hsm->a_vbus_vld) {
+ /* Move to A_VBUS_ERR state, Over-current */
+
+ /* Delete current timer and clear flags */
+ penwell_otg_del_timer(TA_AIDL_BDIS_TMR);
+
+ if (iotg->otg.set_power)
+ iotg->otg.set_power(&iotg->otg, 0);
+
+ if (iotg->stop_host)
+ iotg->stop_host(iotg);
+ else
+ dev_dbg(pnw->dev,
+ "host driver has been removed.\n");
+
+ /* Turn off VBUS */
+ if (iotg->otg.set_vbus)
+ iotg->otg.set_vbus(&iotg->otg, false);
+ penwell_otg_phy_low_power(1);
+ iotg->otg.state = OTG_STATE_A_VBUS_ERR;
+ } else if (!hsm->b_conn && !pnw->iotg.otg.host->b_hnp_enable) {
+ /* Move to A_WAIT_BCON */
+
+ /* delete current timer */
+ penwell_otg_del_timer(TA_AIDL_BDIS_TMR);
+
+ /* add kernel timer */
+ penwell_otg_add_timer(TA_WAIT_BCON_TMR);
+ iotg->otg.state = OTG_STATE_A_WAIT_BCON;
+ } else if (!hsm->b_conn && pnw->iotg.otg.host->b_hnp_enable) {
+ /* Move to A_PERIPHERAL state, HNP */
+
+ /* Delete current timer and clear flags */
+ penwell_otg_del_timer(TA_AIDL_BDIS_TMR);
+
+ if (iotg->stop_host)
+ iotg->stop_host(iotg);
+ else
+ dev_dbg(pnw->dev,
+ "host driver has been removed.\n");
+
+ hsm->b_bus_suspend = 0;
+
+ if (iotg->start_peripheral)
+ iotg->start_peripheral(iotg);
+ else
+ dev_dbg(pnw->dev,
+ "client driver not loaded.\n");
+
+ penwell_otg_add_timer(TA_BIDL_ADIS_TMR);
+ iotg->otg.state = OTG_STATE_A_PERIPHERAL;
+ } else if (hsm->a_bus_req) {
+ /* Move to A_HOST state, user request */
+
+ /* Delete current timer and clear flags */
+ penwell_otg_del_timer(TA_AIDL_BDIS_TMR);
+
+ penwell_otg_loc_sof(1);
+ iotg->otg.state = OTG_STATE_A_HOST;
+ } else if (hsm->id == ID_ACA_A) {
+ if (hsm->id == ID_ACA_A && iotg->otg.set_power)
+ iotg->otg.set_power(&iotg->otg, 1500);
+
+ /* Turn off VBUS */
+ if (iotg->otg.set_vbus)
+ iotg->otg.set_vbus(&iotg->otg, false);
+ }
+
+ break;
+ case OTG_STATE_A_PERIPHERAL:
+ if (hsm->id == ID_B || hsm->a_bus_drop) {
+ /* Move to A_WAIT_VFALL state */
+
+ /* Delete current timer and clear flags */
+ penwell_otg_del_timer(TA_BIDL_ADIS_TMR);
+
+ if (iotg->stop_peripheral)
+ iotg->stop_peripheral(iotg);
+ else
+ dev_dbg(pnw->dev,
+ "client driver has been removed.\n");
+
+ /* Turn off VBUS */
+ if (iotg->otg.set_vbus)
+ iotg->otg.set_vbus(&iotg->otg, false);
+ set_host_mode();
+
+ penwell_otg_add_timer(TA_WAIT_VFALL_TMR);
+ iotg->otg.state = OTG_STATE_A_WAIT_VFALL;
+ } else if (!hsm->a_vbus_vld) {
+ /* Move to A_VBUS_ERR state, over-current detected */
+
+ /* Delete current timer and disable client function */
+ penwell_otg_del_timer(TA_BIDL_ADIS_TMR);
+
+ if (iotg->otg.set_power)
+ iotg->otg.set_power(&iotg->otg, 0);
+
+ if (iotg->stop_peripheral)
+ iotg->stop_peripheral(iotg);
+ else
+ dev_dbg(pnw->dev,
+ "client driver has been removed.\n");
+
+ /* Turn off the VBUS and enter PHY low power mode */
+ if (iotg->otg.set_vbus)
+ iotg->otg.set_vbus(&iotg->otg, false);
+ penwell_otg_phy_low_power(1);
+
+ iotg->otg.state = OTG_STATE_A_VBUS_ERR;
+ } else if (hsm->a_bidl_adis_tmout) {
+ /* Move to A_WAIT_BCON state */
+ hsm->a_bidl_adis_tmr = 0;
+
+ /* Disable client function and switch to host mode */
+ if (iotg->stop_peripheral)
+ iotg->stop_peripheral(iotg);
+ else
+ dev_dbg(pnw->dev,
+ "client driver has been removed.\n");
+
+ hsm->hnp_poll_enable = 0;
+ hsm->b_conn = 0;
+
+ if (iotg->start_host)
+ iotg->start_host(iotg);
+ else
+ dev_dbg(pnw->dev,
+ "host driver not loaded.\n");
+
+ penwell_otg_add_timer(TA_WAIT_BCON_TMR);
+ iotg->otg.state = OTG_STATE_A_WAIT_BCON;
+ } else if (!hsm->b_bus_suspend && hsm->a_bidl_adis_tmr) {
+ /* Client report suspend state end, delete timer */
+ penwell_otg_del_timer(TA_BIDL_ADIS_TMR);
+ } else if (hsm->b_bus_suspend && !hsm->a_bidl_adis_tmr) {
+ /* Client report suspend state start, start timer */
+ if (!timer_pending(&pnw->hsm_timer))
+ penwell_otg_add_timer(TA_BIDL_ADIS_TMR);
+ } else if (hsm->id == ID_ACA_A) {
+ if (hsm->id == ID_ACA_A && iotg->otg.set_power)
+ iotg->otg.set_power(&iotg->otg, 1500);
+
+ /* Turn off VBUS */
+ if (iotg->otg.set_vbus)
+ iotg->otg.set_vbus(&iotg->otg, false);
+ }
+ break;
+ case OTG_STATE_A_VBUS_ERR:
+ if (hsm->id == ID_B || hsm->id == ID_ACA_B ||
+ hsm->id == ID_ACA_A || hsm->a_bus_drop ||
+ hsm->a_clr_err) {
+ if (hsm->a_clr_err)
+ hsm->a_clr_err = 0;
+
+ penwell_otg_add_timer(TA_WAIT_VFALL_TMR);
+ iotg->otg.state = OTG_STATE_A_WAIT_VFALL;
+ }
+ break;
+ case OTG_STATE_A_WAIT_VFALL:
+ if (hsm->a_wait_vfall_tmout) {
+ /* Move to A_IDLE state, vbus falls */
+ penwell_otg_phy_low_power(1);
+
+ /* Always set a_bus_req to 1, in case no ADP */
+ hsm->a_bus_req = 1;
+
+ iotg->otg.state = OTG_STATE_A_IDLE;
+ penwell_update_transceiver();
+ }
+ break;
+ default:
+ ;
+ }
+
+ dev_dbg(pnw->dev,
+ "new state = %s\n", state_string(iotg->otg.state));
+}
+
+static ssize_t
+show_registers(struct device *_dev, struct device_attribute *attr, char *buf)
+{
+ struct penwell_otg *pnw = the_transceiver;
+ char *next;
+ unsigned size;
+ unsigned t;
+
+ next = buf;
+ size = PAGE_SIZE;
+
+ t = scnprintf(next, size,
+ "\n"
+ "USBCMD = 0x%08x\n"
+ "USBSTS = 0x%08x\n"
+ "USBINTR = 0x%08x\n"
+ "ASYNCLISTADDR = 0x%08x\n"
+ "PORTSC1 = 0x%08x\n"
+ "HOSTPC1 = 0x%08x\n"
+ "OTGSC = 0x%08x\n"
+ "USBMODE = 0x%08x\n",
+ readl(pnw->iotg.base + 0x30),
+ readl(pnw->iotg.base + 0x34),
+ readl(pnw->iotg.base + 0x38),
+ readl(pnw->iotg.base + 0x48),
+ readl(pnw->iotg.base + 0x74),
+ readl(pnw->iotg.base + 0xb4),
+ readl(pnw->iotg.base + 0xf4),
+ readl(pnw->iotg.base + 0xf8)
+ );
+ size -= t;
+ next += t;
+
+ return PAGE_SIZE - size;
+}
+static DEVICE_ATTR(registers, S_IRUGO, show_registers, NULL);
+
+static ssize_t
+show_hsm(struct device *_dev, struct device_attribute *attr, char *buf)
+{
+ struct penwell_otg *pnw = the_transceiver;
+ struct intel_mid_otg_xceiv *iotg = &pnw->iotg;
+ char *next;
+ unsigned size, t;
+
+ next = buf;
+ size = PAGE_SIZE;
+
+ if (iotg->otg.host)
+ iotg->hsm.a_set_b_hnp_en = iotg->otg.host->b_hnp_enable;
+
+ if (iotg->otg.gadget)
+ iotg->hsm.b_hnp_enable = iotg->otg.gadget->b_hnp_enable;
+
+ t = scnprintf(next, size,
+ "\n"
+ "current state = %s\n"
+ "a_bus_resume = \t%d\n"
+ "a_bus_suspend = \t%d\n"
+ "a_conn = \t%d\n"
+ "a_sess_vld = \t%d\n"
+ "a_srp_det = \t%d\n"
+ "a_vbus_vld = \t%d\n"
+ "b_bus_suspend = \t%d\n"
+ "b_conn = \t%d\n"
+ "b_se0_srp = \t%d\n"
+ "b_ssend_srp = \t%d\n"
+ "b_sess_end = \t%d\n"
+ "b_sess_vld = \t%d\n"
+ "id = \t%d\n"
+ "power_up = \t%d\n"
+ "adp_change = \t%d\n"
+ "test_device = \t%d\n"
+ "a_set_b_hnp_en = \t%d\n"
+ "b_srp_done = \t%d\n"
+ "b_hnp_enable = \t%d\n"
+ "hnp_poll_enable = \t%d\n"
+ "a_wait_vrise_tmout = \t%d\n"
+ "a_wait_bcon_tmout = \t%d\n"
+ "a_aidl_bdis_tmout = \t%d\n"
+ "a_bidl_adis_tmout = \t%d\n"
+ "a_bidl_adis_tmr = \t%d\n"
+ "a_wait_vfall_tmout = \t%d\n"
+ "b_ase0_brst_tmout = \t%d\n"
+ "b_srp_fail_tmout = \t%d\n"
+ "b_srp_fail_tmr = \t%d\n"
+ "b_adp_sense_tmout = \t%d\n"
+ "a_bus_drop = \t%d\n"
+ "a_bus_req = \t%d\n"
+ "a_clr_err = \t%d\n"
+ "b_bus_req = \t%d\n",
+ state_string(iotg->otg.state),
+ iotg->hsm.a_bus_resume,
+ iotg->hsm.a_bus_suspend,
+ iotg->hsm.a_conn,
+ iotg->hsm.a_sess_vld,
+ iotg->hsm.a_srp_det,
+ iotg->hsm.a_vbus_vld,
+ iotg->hsm.b_bus_suspend,
+ iotg->hsm.b_conn,
+ iotg->hsm.b_se0_srp,
+ iotg->hsm.b_ssend_srp,
+ iotg->hsm.b_sess_end,
+ iotg->hsm.b_sess_vld,
+ iotg->hsm.id,
+ iotg->hsm.power_up,
+ iotg->hsm.adp_change,
+ iotg->hsm.test_device,
+ iotg->hsm.a_set_b_hnp_en,
+ iotg->hsm.b_srp_done,
+ iotg->hsm.b_hnp_enable,
+ iotg->hsm.hnp_poll_enable,
+ iotg->hsm.a_wait_vrise_tmout,
+ iotg->hsm.a_wait_bcon_tmout,
+ iotg->hsm.a_aidl_bdis_tmout,
+ iotg->hsm.a_bidl_adis_tmout,
+ iotg->hsm.a_bidl_adis_tmr,
+ iotg->hsm.a_wait_vfall_tmout,
+ iotg->hsm.b_ase0_brst_tmout,
+ iotg->hsm.b_srp_fail_tmout,
+ iotg->hsm.b_srp_fail_tmr,
+ iotg->hsm.b_adp_sense_tmout,
+ iotg->hsm.a_bus_drop,
+ iotg->hsm.a_bus_req,
+ iotg->hsm.a_clr_err,
+ iotg->hsm.b_bus_req
+ );
+ size -= t;
+ next += t;
+
+ return PAGE_SIZE - size;
+}
+static DEVICE_ATTR(hsm, S_IRUGO, show_hsm, NULL);
+
+static ssize_t
+get_a_bus_req(struct device *dev, struct device_attribute *attr, char *buf)
+{
+ struct penwell_otg *pnw = the_transceiver;
+ char *next;
+ unsigned size, t;
+
+ next = buf;
+ size = PAGE_SIZE;
+
+ t = scnprintf(next, size, "%d", pnw->iotg.hsm.a_bus_req);
+ size -= t;
+ next += t;
+
+ return PAGE_SIZE - size;
+}
+
+static ssize_t
+set_a_bus_req(struct device *dev, struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct penwell_otg *pnw = the_transceiver;
+ struct intel_mid_otg_xceiv *iotg = &pnw->iotg;
+
+ if (!iotg->otg.default_a)
+ return -1;
+ if (count > 2)
+ return -1;
+
+ if (buf[0] == '0') {
+ iotg->hsm.a_bus_req = 0;
+ dev_dbg(pnw->dev, "a_bus_req = 0\n");
+ } else if (buf[0] == '1') {
+ /* If a_bus_drop is TRUE, a_bus_req can't be set */
+ if (iotg->hsm.a_bus_drop)
+ return -1;
+ iotg->hsm.a_bus_req = 1;
+ dev_dbg(pnw->dev, "a_bus_req = 1\n");
+ if (iotg->otg.state == OTG_STATE_A_PERIPHERAL) {
+ dev_warn(pnw->dev, "Role switch will be "
+ "performed soon, if connected OTG device "
+ "supports role switch request.\n");
+ dev_warn(pnw->dev, "It may cause data"
+ "corruption during data transfer\n");
+ }
+ }
+
+ penwell_update_transceiver();
+
+ return count;
+}
+static DEVICE_ATTR(a_bus_req, S_IRUGO | S_IWUGO, get_a_bus_req, set_a_bus_req);
+
+static ssize_t
+get_a_bus_drop(struct device *dev, struct device_attribute *attr, char *buf)
+{
+ struct penwell_otg *pnw = the_transceiver;
+ char *next;
+ unsigned size;
+ unsigned t;
+
+ next = buf;
+ size = PAGE_SIZE;
+
+ t = scnprintf(next, size, "%d", pnw->iotg.hsm.a_bus_drop);
+ size -= t;
+ next += t;
+
+ return PAGE_SIZE - size;
+}
+
+static ssize_t
+set_a_bus_drop(struct device *dev, struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct penwell_otg *pnw = the_transceiver;
+ struct intel_mid_otg_xceiv *iotg = &pnw->iotg;
+
+ if (!iotg->otg.default_a)
+ return -1;
+ if (count > 2)
+ return -1;
+
+ if (buf[0] == '0') {
+ iotg->hsm.a_bus_drop = 0;
+ dev_dbg(pnw->dev, "a_bus_drop = 0\n");
+ } else if (buf[0] == '1') {
+ iotg->hsm.a_bus_drop = 1;
+ iotg->hsm.a_bus_req = 0;
+ dev_dbg(pnw->dev, "a_bus_drop = 1, so a_bus_req = 0\n");
+ }
+
+ penwell_update_transceiver();
+
+ return count;
+}
+static DEVICE_ATTR(a_bus_drop, S_IRUGO | S_IWUGO,
+ get_a_bus_drop, set_a_bus_drop);
+
+static ssize_t
+get_b_bus_req(struct device *dev, struct device_attribute *attr, char *buf)
+{
+ struct penwell_otg *pnw = the_transceiver;
+ char *next;
+ unsigned size;
+ unsigned t;
+
+ next = buf;
+ size = PAGE_SIZE;
+
+ t = scnprintf(next, size, "%d", pnw->iotg.hsm.b_bus_req);
+ size -= t;
+ next += t;
+
+ return PAGE_SIZE - size;
+}
+
+static ssize_t
+set_b_bus_req(struct device *dev, struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct penwell_otg *pnw = the_transceiver;
+ struct intel_mid_otg_xceiv *iotg = &pnw->iotg;
+
+ if (iotg->otg.default_a)
+ return -1;
+
+ if (count > 2)
+ return -1;
+
+ if (buf[0] == '0') {
+ iotg->hsm.b_bus_req = 0;
+ dev_dbg(pnw->dev, "b_bus_req = 0\n");
+ } else if (buf[0] == '1') {
+ iotg->hsm.b_bus_req = 1;
+ dev_dbg(pnw->dev, "b_bus_req = 1\n");
+ if (iotg->otg.state == OTG_STATE_B_PERIPHERAL) {
+ dev_warn(pnw->dev, "Role switch will be "
+ "performed soon, if connected OTG device "
+ "supports role switch request.\n");
+ dev_warn(pnw->dev, "It may cause data "
+ "corruption during data transfer\n");
+ }
+ }
+
+ penwell_update_transceiver();
+
+ return count;
+}
+static DEVICE_ATTR(b_bus_req, S_IRUGO | S_IWUGO, get_b_bus_req, set_b_bus_req);
+
+static ssize_t
+set_a_clr_err(struct device *dev, struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct penwell_otg *pnw = the_transceiver;
+ struct intel_mid_otg_xceiv *iotg = &pnw->iotg;
+
+ if (!iotg->otg.default_a)
+ return -1;
+ if (iotg->otg.state != OTG_STATE_A_VBUS_ERR)
+ return -1;
+ if (count > 2)
+ return -1;
+
+ if (buf[0] == '1') {
+ iotg->hsm.a_clr_err = 1;
+ dev_dbg(pnw->dev, "a_clr_err = 1\n");
+ }
+
+ penwell_update_transceiver();
+
+ return count;
+}
+static DEVICE_ATTR(a_clr_err, S_IWUGO, NULL, set_a_clr_err);
+
+static struct attribute *inputs_attrs[] = {
+ &dev_attr_a_bus_req.attr,
+ &dev_attr_a_bus_drop.attr,
+ &dev_attr_b_bus_req.attr,
+ &dev_attr_a_clr_err.attr,
+ NULL,
+};
+
+static struct attribute_group debug_dev_attr_group = {
+ .name = "inputs",
+ .attrs = inputs_attrs,
+};
+
+static int penwell_otg_probe(struct pci_dev *pdev,
+ const struct pci_device_id *id)
+{
+ unsigned long resource, len;
+ void __iomem *base = NULL;
+ int retval;
+ u32 val32;
+ struct penwell_otg *pnw;
+ char qname[] = "penwell_otg_queue";
+
+ retval = 0;
+
+ dev_dbg(&pdev->dev, "\notg controller is detected.\n");
+
+ if (pci_enable_device(pdev) < 0) {
+ retval = -ENODEV;
+ goto done;
+ }
+
+ pnw = kzalloc(sizeof *pnw, GFP_KERNEL);
+ if (pnw == NULL) {
+ retval = -ENOMEM;
+ goto done;
+ }
+ the_transceiver = pnw;
+
+ /* control register: BAR 0 */
+ resource = pci_resource_start(pdev, 0);
+ len = pci_resource_len(pdev, 0);
+ if (!request_mem_region(resource, len, driver_name)) {
+ retval = -EBUSY;
+ goto err;
+ }
+ pnw->region = 1;
+
+ base = ioremap_nocache(resource, len);
+ if (base == NULL) {
+ retval = -EFAULT;
+ goto err;
+ }
+ pnw->iotg.base = base;
+
+ if (!request_mem_region(USBCFG_ADDR, USBCFG_LEN, driver_name)) {
+ retval = -EBUSY;
+ goto err;
+ }
+ pnw->cfg_region = 1;
+
+ if (!pdev->irq) {
+ dev_dbg(&pdev->dev, "No IRQ.\n");
+ retval = -ENODEV;
+ goto err;
+ }
+
+ pnw->qwork = create_singlethread_workqueue(qname);
+ if (!pnw->qwork) {
+ dev_dbg(&pdev->dev, "cannot create workqueue %s\n", qname);
+ retval = -ENOMEM;
+ goto err;
+ }
+ INIT_WORK(&pnw->work, penwell_otg_work);
+ INIT_WORK(&pnw->hnp_poll_work, penwell_otg_hnp_poll_work);
+
+ /* OTG common part */
+ pnw->dev = &pdev->dev;
+ pnw->iotg.otg.dev = &pdev->dev;
+ pnw->iotg.otg.label = driver_name;
+ pnw->iotg.otg.set_host = penwell_otg_set_host;
+ pnw->iotg.otg.set_peripheral = penwell_otg_set_peripheral;
+ pnw->iotg.otg.set_power = penwell_otg_set_power;
+ pnw->iotg.otg.set_vbus = penwell_otg_set_vbus;
+ pnw->iotg.otg.start_srp = penwell_otg_start_srp;
+ pnw->iotg.set_adp_probe = NULL;
+ pnw->iotg.set_adp_sense = NULL;
+ pnw->iotg.otg.state = OTG_STATE_UNDEFINED;
+ if (otg_set_transceiver(&pnw->iotg.otg)) {
+ dev_dbg(pnw->dev, "can't set transceiver\n");
+ retval = -EBUSY;
+ goto err;
+ }
+
+ pnw->iotg.ulpi_ops.read = penwell_otg_ulpi_read;
+ pnw->iotg.ulpi_ops.write = penwell_otg_ulpi_write;
+
+ init_timer(&pnw->hsm_timer);
+ init_timer(&pnw->hnp_poll_timer);
+ init_completion(&pnw->adp.adp_comp);
+
+ ATOMIC_INIT_NOTIFIER_HEAD(&pnw->iotg.iotg_notifier);
+
+ pnw->iotg_notifier.notifier_call = penwell_otg_iotg_notify;
+ if (intel_mid_otg_register_notifier(&pnw->iotg, &pnw->iotg_notifier)) {
+ dev_dbg(pnw->dev, "Failed to register notifier\n");
+ retval = -EBUSY;
+ goto err;
+ }
+
+ pnw->msic = penwell_otg_check_msic();
+
+ penwell_otg_phy_enable(1);
+
+ reset_otg();
+ init_hsm();
+
+ if (request_irq(pdev->irq, otg_irq, IRQF_SHARED,
+ driver_name, pnw) != 0) {
+ dev_dbg(pnw->dev,
+ "request interrupt %d failed\n", pdev->irq);
+ retval = -EBUSY;
+ goto err;
+ }
+
+ /* enable OTGSC int */
+ val32 = OTGSC_DPIE | OTGSC_BSEIE | OTGSC_BSVIE |
+ OTGSC_ASVIE | OTGSC_AVVIE | OTGSC_IDIE | OTGSC_IDPU;
+ writel(val32, pnw->iotg.base + CI_OTGSC);
+
+ retval = device_create_file(&pdev->dev, &dev_attr_registers);
+ if (retval < 0) {
+ dev_dbg(pnw->dev,
+ "Can't register sysfs attribute: %d\n", retval);
+ goto err;
+ }
+
+ retval = device_create_file(&pdev->dev, &dev_attr_hsm);
+ if (retval < 0) {
+ dev_dbg(pnw->dev,
+ "Can't hsm sysfs attribute: %d\n", retval);
+ goto err;
+ }
+
+ retval = sysfs_create_group(&pdev->dev.kobj, &debug_dev_attr_group);
+ if (retval < 0) {
+ dev_dbg(pnw->dev,
+ "Can't register sysfs attr group: %d\n", retval);
+ goto err;
+ }
+
+ if (pnw->iotg.otg.state == OTG_STATE_A_IDLE)
+ queue_work(pnw->qwork, &pnw->work);
+
+ return 0;
+
+err:
+ if (the_transceiver)
+ penwell_otg_remove(pdev);
+done:
+ return retval;
+}
+
+static void penwell_otg_remove(struct pci_dev *pdev)
+{
+ struct penwell_otg *pnw = the_transceiver;
+
+ if (pnw->qwork) {
+ flush_workqueue(pnw->qwork);
+ destroy_workqueue(pnw->qwork);
+ }
+
+ /* disable OTGSC interrupt as OTGSC doesn't change in reset */
+ writel(0, pnw->iotg.base + CI_OTGSC);
+
+ if (pdev->irq)
+ free_irq(pdev->irq, pnw);
+ if (pnw->cfg_region)
+ release_mem_region(USBCFG_ADDR, USBCFG_LEN);
+ if (pnw->iotg.base)
+ iounmap(pnw->iotg.base);
+ if (pnw->region)
+ release_mem_region(pci_resource_start(pdev, 0),
+ pci_resource_len(pdev, 0));
+
+ otg_set_transceiver(NULL);
+ pci_disable_device(pdev);
+ sysfs_remove_group(&pdev->dev.kobj, &debug_dev_attr_group);
+ device_remove_file(&pdev->dev, &dev_attr_hsm);
+ device_remove_file(&pdev->dev, &dev_attr_registers);
+ kfree(pnw);
+ pnw = NULL;
+}
+
+static void transceiver_suspend(struct pci_dev *pdev)
+{
+ pci_save_state(pdev);
+ pci_set_power_state(pdev, PCI_D3hot);
+ penwell_otg_phy_low_power(1);
+}
+
+static int penwell_otg_suspend(struct pci_dev *pdev, pm_message_t message)
+{
+ struct penwell_otg *pnw = the_transceiver;
+ struct intel_mid_otg_xceiv *iotg = &pnw->iotg;
+ int ret = 0;
+
+ /* Disbale OTG interrupts */
+ penwell_otg_intr(0);
+
+ if (pdev->irq)
+ free_irq(pdev->irq, pnw);
+
+ /* Prevent more otg_work */
+ flush_workqueue(pnw->qwork);
+ destroy_workqueue(pnw->qwork);
+ pnw->qwork = NULL;
+
+ /* start actions */
+ switch (iotg->otg.state) {
+ case OTG_STATE_A_WAIT_VFALL:
+ iotg->otg.state = OTG_STATE_A_IDLE;
+ case OTG_STATE_A_IDLE:
+ case OTG_STATE_B_IDLE:
+ case OTG_STATE_A_VBUS_ERR:
+ transceiver_suspend(pdev);
+ break;
+ case OTG_STATE_A_WAIT_VRISE:
+ penwell_otg_del_timer(TA_WAIT_VRISE_TMR);
+ iotg->hsm.a_srp_det = 0;
+
+ /* Turn off VBus */
+ iotg->otg.set_vbus(&iotg->otg, false);
+ iotg->otg.state = OTG_STATE_A_IDLE;
+ transceiver_suspend(pdev);
+ break;
+ case OTG_STATE_A_WAIT_BCON:
+ penwell_otg_del_timer(TA_WAIT_BCON_TMR);
+ if (pnw->iotg.stop_host)
+ pnw->iotg.stop_host(&pnw->iotg);
+ else
+ dev_dbg(pnw->dev, "host driver has been stopped.\n");
+
+ iotg->hsm.a_srp_det = 0;
+
+ /* Turn off VBus */
+ iotg->otg.set_vbus(&iotg->otg, false);
+ iotg->otg.state = OTG_STATE_A_IDLE;
+ transceiver_suspend(pdev);
+ break;
+ case OTG_STATE_A_HOST:
+ if (pnw->iotg.stop_host)
+ pnw->iotg.stop_host(&pnw->iotg);
+ else
+ dev_dbg(pnw->dev, "host driver has been stopped.\n");
+
+ iotg->hsm.a_srp_det = 0;
+
+ /* Turn off VBus */
+ iotg->otg.set_vbus(&iotg->otg, false);
+
+ iotg->otg.state = OTG_STATE_A_IDLE;
+ transceiver_suspend(pdev);
+ break;
+ case OTG_STATE_A_SUSPEND:
+ penwell_otg_del_timer(TA_AIDL_BDIS_TMR);
+ penwell_otg_HABA(0);
+ if (pnw->iotg.stop_host)
+ pnw->iotg.stop_host(&pnw->iotg);
+ else
+ dev_dbg(pnw->dev, "host driver has been removed.\n");
+ iotg->hsm.a_srp_det = 0;
+
+ /* Turn off VBus */
+ iotg->otg.set_vbus(&iotg->otg, false);
+ iotg->otg.state = OTG_STATE_A_IDLE;
+ transceiver_suspend(pdev);
+ break;
+ case OTG_STATE_A_PERIPHERAL:
+ penwell_otg_del_timer(TA_BIDL_ADIS_TMR);
+
+ if (pnw->iotg.stop_peripheral)
+ pnw->iotg.stop_peripheral(&pnw->iotg);
+ else
+ dev_dbg(pnw->dev, "client driver has been stopped.\n");
+
+ /* Turn off VBus */
+ iotg->otg.set_vbus(&iotg->otg, false);
+ iotg->hsm.a_srp_det = 0;
+ iotg->otg.state = OTG_STATE_A_IDLE;
+ transceiver_suspend(pdev);
+ break;
+ case OTG_STATE_B_HOST:
+ if (pnw->iotg.stop_host)
+ pnw->iotg.stop_host(&pnw->iotg);
+ else
+ dev_dbg(pnw->dev, "host driver has been stopped.\n");
+ iotg->hsm.b_bus_req = 0;
+ iotg->otg.state = OTG_STATE_B_IDLE;
+ transceiver_suspend(pdev);
+ break;
+ case OTG_STATE_B_PERIPHERAL:
+ if (pnw->iotg.stop_peripheral)
+ pnw->iotg.stop_peripheral(&pnw->iotg);
+ else
+ dev_dbg(pnw->dev, "client driver has been stopped.\n");
+ iotg->otg.state = OTG_STATE_B_IDLE;
+ transceiver_suspend(pdev);
+ break;
+ case OTG_STATE_B_WAIT_ACON:
+ penwell_otg_del_timer(TB_ASE0_BRST_TMR);
+
+ penwell_otg_HAAR(0);
+
+ if (pnw->iotg.stop_host)
+ pnw->iotg.stop_host(&pnw->iotg);
+ else
+ dev_dbg(pnw->dev, "host driver has been stopped.\n");
+ iotg->hsm.b_bus_req = 0;
+ iotg->otg.state = OTG_STATE_B_IDLE;
+ transceiver_suspend(pdev);
+ break;
+ default:
+ dev_dbg(pnw->dev, "error state before suspend\n");
+ break;
+ }
+
+ return ret;
+}
+
+static void transceiver_resume(struct pci_dev *pdev)
+{
+ pci_restore_state(pdev);
+ pci_set_power_state(pdev, PCI_D0);
+}
+
+static int penwell_otg_resume(struct pci_dev *pdev)
+{
+ struct penwell_otg *pnw = the_transceiver;
+ int ret = 0;
+
+ transceiver_resume(pdev);
+
+ pnw->qwork = create_singlethread_workqueue("penwell_otg_queue");
+ if (!pnw->qwork) {
+ dev_dbg(pnw->dev, "cannot create penwell otg workqueue\n");
+ ret = -ENOMEM;
+ goto error;
+ }
+
+ if (request_irq(pdev->irq, otg_irq, IRQF_SHARED,
+ driver_name, pnw) != 0) {
+ dev_dbg(pnw->dev, "request irq %d failed\n", pdev->irq);
+ ret = -EBUSY;
+ goto error;
+ }
+
+ /* enable OTG interrupts */
+ penwell_otg_intr(1);
+
+ update_hsm();
+
+ penwell_update_transceiver();
+
+ return ret;
+error:
+ penwell_otg_intr(0);
+ transceiver_suspend(pdev);
+ return ret;
+}
+
+static int __init penwell_otg_init(void)
+{
+ return pci_register_driver(&otg_pci_driver);
+}
+module_init(penwell_otg_init);
+
+static void __exit penwell_otg_cleanup(void)
+{
+ pci_unregister_driver(&otg_pci_driver);
+}
+module_exit(penwell_otg_cleanup);
diff --git a/include/linux/usb/penwell_otg.h b/include/linux/usb/penwell_otg.h
new file mode 100644
index 00000000000..014eac960c0
--- /dev/null
+++ b/include/linux/usb/penwell_otg.h
@@ -0,0 +1,277 @@
+/*
+ * Intel Penwell USB OTG transceiver driver
+ * Copyright (C) 2009 - 2010, Intel Corporation.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope 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.,
+ * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ */
+
+#ifndef __PENWELL_OTG_H__
+#define __PENWELL_OTG_H__
+
+#include <linux/usb/intel_mid_otg.h>
+
+#define CI_USBCMD 0x30
+# define USBCMD_RST BIT(1)
+# define USBCMD_RS BIT(0)
+#define CI_USBSTS 0x34
+# define USBSTS_SLI BIT(8)
+# define USBSTS_URI BIT(6)
+# define USBSTS_PCI BIT(2)
+#define CI_ULPIVP 0x60
+# define ULPI_WU BIT(31)
+# define ULPI_RUN BIT(30)
+# define ULPI_RW BIT(29)
+# define ULPI_SS BIT(27)
+# define ULPI_PORT (BIT(26) | BIT(25) | BIT(24))
+# define ULPI_ADDR (0xff << 16)
+# define ULPI_DATRD (0xff << 8)
+# define ULPI_DATWR (0xff << 0)
+#define CI_PORTSC1 0x74
+# define PORTSC_PP BIT(12)
+# define PORTSC_LS (BIT(11) | BIT(10))
+# define PORTSC_SUSP BIT(7)
+# define PORTSC_CCS BIT(0)
+#define CI_HOSTPC1 0xb4
+# define HOSTPC1_PHCD BIT(22)
+#define CI_OTGSC 0xf4
+# define OTGSC_DPIE BIT(30)
+# define OTGSC_1MSE BIT(29)
+# define OTGSC_BSEIE BIT(28)
+# define OTGSC_BSVIE BIT(27)
+# define OTGSC_ASVIE BIT(26)
+# define OTGSC_AVVIE BIT(25)
+# define OTGSC_IDIE BIT(24)
+# define OTGSC_DPIS BIT(22)
+# define OTGSC_1MSS BIT(21)
+# define OTGSC_BSEIS BIT(20)
+# define OTGSC_BSVIS BIT(19)
+# define OTGSC_ASVIS BIT(18)
+# define OTGSC_AVVIS BIT(17)
+# define OTGSC_IDIS BIT(16)
+# define OTGSC_DPS BIT(14)
+# define OTGSC_1MST BIT(13)
+# define OTGSC_BSE BIT(12)
+# define OTGSC_BSV BIT(11)
+# define OTGSC_ASV BIT(10)
+# define OTGSC_AVV BIT(9)
+# define OTGSC_ID BIT(8)
+# define OTGSC_HABA BIT(7)
+# define OTGSC_HADP BIT(6)
+# define OTGSC_IDPU BIT(5)
+# define OTGSC_DP BIT(4)
+# define OTGSC_OT BIT(3)
+# define OTGSC_HAAR BIT(2)
+# define OTGSC_VC BIT(1)
+# define OTGSC_VD BIT(0)
+#define CI_USBMODE 0xf8
+# define USBMODE_CM (BIT(1) | BIT(0))
+# define USBMODE_IDLE 0
+# define USBMODE_DEVICE 0x2
+# define USBMODE_HOST 0x3
+#define USBCFG_ADDR 0xff10801c
+#define USBCFG_LEN 4
+# define USBCFG_VBUSVAL BIT(14)
+# define USBCFG_AVALID BIT(13)
+# define USBCFG_BVALID BIT(12)
+# define USBCFG_SESEND BIT(11)
+
+#define OTGSC_INTEN_MASK \
+ (OTGSC_DPIE | OTGSC_BSEIE | OTGSC_BSVIE \
+ | OTGSC_ASVIE | OTGSC_AVVIE | OTGSC_IDIE)
+
+#define OTGSC_INTSTS_MASK \
+ (OTGSC_DPIS | OTGSC_BSEIS | OTGSC_BSVIS \
+ | OTGSC_ASVIS | OTGSC_AVVIS | OTGSC_IDIS)
+
+#define INTR_DUMMY_MASK (USBSTS_SLI | USBSTS_URI | USBSTS_PCI)
+
+#define HOST_REQUEST_FLAG BIT(0)
+
+/* MSIC register for vbus power control */
+#define MSIC_ID 0x00
+# define ID0_VENDID0 (BIT(7) | BIT(6))
+#define MSIC_ID1 0x01
+# define ID1_VENDID1 (BIT(7) | BIT(6))
+#define MSIC_VUSB330CNT 0xd4
+#define MSIC_VOTGCNT 0xdf
+# define VOTGEN BIT(7)
+# define VOTGRAMP BIT(4)
+#define MSIC_SPWRSRINT1 0x193
+# define SUSBCHPDET BIT(6)
+# define SUSBDCDET BIT(2)
+# define MSIC_SPWRSRINT1_MASK (BIT(6) | BIT(2))
+# define SPWRSRINT1_CHRG_PORT BIT(6)
+# define SPWRSRINT1_HOST_PORT 0
+# define SPWRSRINT1_DEDT_CHRG (BIT(6) | BIT(2))
+#define MSIC_IS4SET 0x2c8 /* Intel Specific */
+# define IS4_CHGDSERXDPINV BIT(5)
+#define MSIC_OTGCTRLSET 0x340
+#define MSIC_OTGCTRLCLR 0x341
+# define DMPULLDOWNCLR BIT(2)
+# define DPPULLDOWNCLR BIT(1)
+#define MSIC_PWRCTRLSET 0x342
+# define DPWKPUENSET BIT(4)
+# define SWCNTRLSET BIT(0)
+#define MSIC_PWRCTRLCLR 0x343
+# define DPVSRCENCLR BIT(6)
+# define SWCNTRLCLR BIT(0)
+#define MSIC_FUNCTRLSET 0x344
+# define OPMODESET0 BIT(3)
+#define MSIC_FUNCTRLCLR 0x345
+# define OPMODECLR1 BIT(4)
+#define MSIC_VS3SET 0x346 /* Vendor Specific */
+# define SWUSBDETSET BIT(4)
+# define DATACONENSET BIT(3)
+#define MSIC_VS3CLR 0x347
+# define SWUSBDETCLR BIT(4)
+# define DATACONENCLR BIT(3)
+#define MSIC_ULPIACCESSMODE 0x348
+# define SPIMODE BIT(0)
+
+/* MSIC TI implementation for ADP/ACA */
+#define ULPI_TI_VS2 0x83
+# define TI_ID_FLOAT_STS BIT(4)
+# define TI_ID_RARBRC_STS(d) (((d)>>2)&3)
+# define TI_ID_RARBRC_STS_MASK (BIT(3) | BIT(2))
+# define TI_ID_RARBRC_NONE 0
+# define TI_ID_RARBRC_A 1
+# define TI_ID_RARBRC_B 2
+# define TI_ID_RARBRC_C 3
+# define TI_ADP_INT_STS BIT(1)
+#define ULPI_TI_VS4 0x88
+# define TI_ACA_DET_EN BIT(6)
+#define ULPI_TI_VS5 0x8b
+# define TI_ADP_INT_EN BIT(7)
+# define TI_ID_FLOAT_EN BIT(5)
+# define TI_ID_RES_EN BIT(4)
+#define ULPI_TI_VS6 0x8e
+# define TI_HS_TXPREN BIT(4)
+# define TI_ADP_MODE(d) (((d)>>2)&3)
+# define TI_ADP_MODE_MASK (BIT(3) | BIT(2))
+# define TI_ADP_MODE_DISABLE 0
+# define TI_ADP_MODE_SENSE 1
+# define TI_ADP_MODE_PRB_A 2
+# define TI_ADP_MODE_PRB_B 3
+# define TI_VBUS_IADP_SRC BIT(1)
+# define TI_VBUS_IADP_SINK BIT(0)
+#define ULPI_TI_VS7 0x91
+# define TI_T_ADP_HIGH (0xff)
+#define ULPI_TI_VS8 0x94
+# define TI_T_ADP_LOW (0xff)
+#define ULPI_TI_VS9 0x97
+# define TI_T_ADP_RISE (0xff)
+
+#define TI_PRB_DELTA 0x08
+
+/* MSIC FreeScale Implementation for ADP */
+#define ULPI_FS_ADPCL 0x28
+# define ADPCL_PRBDSCHG (BIT(5) | BIT(6))
+# define ADPCL_PRBDSCHG_4 0
+# define ADPCL_PRBDSCHG_8 1
+# define ADPCL_PRBDSCHG_16 2
+# define ADPCL_PRBDSCHG_32 3
+# define ADPCL_PRBPRD (BIT(3) | BIT(4))
+# define ADPCL_PRBPRD_A_HALF 0
+# define ADPCL_PRBPRD_B_HALF 1
+# define ADPCL_PRBPRD_A 2
+# define ADPCL_PRBPRD_B 3
+# define ADPCL_SNSEN BIT(2)
+# define ADPCL_PRBEN BIT(1)
+# define ADPCL_ADPEN BIT(0)
+#define ULPI_FS_ADPCH 0x29
+# define ADPCH_PRBDELTA (0x1f << 0)
+#define ULPI_FS_ADPIE 0x2a
+# define ADPIE_ADPRAMPIE BIT(2)
+# define ADPIE_SNSMISSIE BIT(1)
+# define ADPIE_PRBTRGIE BIT(0)
+#define ULPI_FS_ADPIS 0x2b
+# define ADPIS_ADPRAMPS BIT(5)
+# define ADPIS_SNSMISSS BIT(4)
+# define ADPIS_PRBTRGS BIT(3)
+# define ADPIS_ADPRAMPI BIT(2)
+# define ADPIS_SNSMISSI BIT(1)
+# define ADPIS_PRBTRGI BIT(0)
+#define ULPI_FS_ADPRL 0x2c
+# define ADPRL_ADPRAMP (0xff << 0)
+#define ULPI_FS_ADPRH 0x2d
+# define ADPRH_ADPRAMP (0x7 << 0)
+
+#define FS_ADPI_MASK (ADPIS_ADPRAMPI | ADPIS_SNSMISSI | ADPIS_PRBTRGI)
+
+enum penwell_otg_timer_type {
+ TA_WAIT_VRISE_TMR,
+ TA_WAIT_BCON_TMR,
+ TA_AIDL_BDIS_TMR,
+ TA_BIDL_ADIS_TMR,
+ TA_WAIT_VFALL_TMR,
+ TB_ASE0_BRST_TMR,
+ TB_SE0_SRP_TMR,
+ TB_SRP_FAIL_TMR, /* wait for response of SRP */
+ TB_BUS_SUSPEND_TMR
+};
+
+#define TA_WAIT_VRISE 100
+#define TA_WAIT_BCON 30000
+#define TA_AIDL_BDIS 1500
+#define TA_BIDL_ADIS 300
+#define TA_WAIT_VFALL 950
+#define TB_ASE0_BRST 300
+#define TB_SE0_SRP 1800
+#define TB_SSEND_SRP 1800
+# define SRP_MON_INVAL 200
+#define TB_SRP_FAIL 5500
+#define TB_BUS_SUSPEND 500
+#define THOS_REQ_POL 1500
+
+/* MSIC vendor information */
+enum msic_vendor {
+ MSIC_VD_FS,
+ MSIC_VD_TI,
+ MSIC_VD_UNKNOWN
+};
+
+struct adp_status {
+ struct completion adp_comp;
+ u8 t_adp_rise;
+};
+
+struct penwell_otg {
+ struct intel_mid_otg_xceiv iotg;
+ struct device *dev;
+
+ unsigned region;
+ unsigned cfg_region;
+
+ struct work_struct work;
+ struct work_struct hnp_poll_work;
+ struct workqueue_struct *qwork;
+
+ struct timer_list hsm_timer;
+ struct timer_list hnp_poll_timer;
+
+ enum msic_vendor msic;
+
+ struct notifier_block iotg_notifier;
+
+ struct adp_status adp;
+};
+
+static inline
+struct penwell_otg *iotg_to_penwell(struct intel_mid_otg_xceiv *iotg)
+{
+ return container_of(iotg, struct penwell_otg, iotg);
+}
+
+#endif /* __PENWELL_OTG_H__ */