Merge branch 'merge'

1 files changed, 669 insertions, 0 deletions

diff --git a/drivers/char/tpm/tpm_tis.c b/drivers/char/tpm/tpm_tis.c
new file mode 100644
index 000000000000..b9cae9a238bb
--- /dev/null
+++ b/drivers/char/tpm/tpm_tis.c
@@ -0,0 +1,669 @@
+/*
+ * Copyright (C) 2005, 2006 IBM Corporation
+ *
+ * Authors:
+ * Leendert van Doorn <leendert@watson.ibm.com>
+ * Kylene Hall <kjhall@us.ibm.com>
+ *
+ * Device driver for TCG/TCPA TPM (trusted platform module).
+ * Specifications at www.trustedcomputinggroup.org
+ *
+ * This device driver implements the TPM interface as defined in
+ * the TCG TPM Interface Spec version 1.2, revision 1.0.
+ *
+ * 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, version 2 of the
+ * License.
+ */
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/pnp.h>
+#include <linux/interrupt.h>
+#include <linux/wait.h>
+#include "tpm.h"
+
+#define TPM_HEADER_SIZE 10
+
+enum tis_access {
+        TPM_ACCESS_VALID = 0x80,
+        TPM_ACCESS_ACTIVE_LOCALITY = 0x20,
+        TPM_ACCESS_REQUEST_PENDING = 0x04,
+        TPM_ACCESS_REQUEST_USE = 0x02,
+};
+
+enum tis_status {
+        TPM_STS_VALID = 0x80,
+        TPM_STS_COMMAND_READY = 0x40,
+        TPM_STS_GO = 0x20,
+        TPM_STS_DATA_AVAIL = 0x10,
+        TPM_STS_DATA_EXPECT = 0x08,
+};
+
+enum tis_int_flags {
+        TPM_GLOBAL_INT_ENABLE = 0x80000000,
+        TPM_INTF_BURST_COUNT_STATIC = 0x100,
+        TPM_INTF_CMD_READY_INT = 0x080,
+        TPM_INTF_INT_EDGE_FALLING = 0x040,
+        TPM_INTF_INT_EDGE_RISING = 0x020,
+        TPM_INTF_INT_LEVEL_LOW = 0x010,
+        TPM_INTF_INT_LEVEL_HIGH = 0x008,
+        TPM_INTF_LOCALITY_CHANGE_INT = 0x004,
+        TPM_INTF_STS_VALID_INT = 0x002,
+        TPM_INTF_DATA_AVAIL_INT = 0x001,
+};
+
+enum tis_defaults {
+        TIS_MEM_BASE = 0xFED4000,
+        TIS_MEM_LEN = 0x5000,
+        TIS_SHORT_TIMEOUT = 750,        /* ms */
+        TIS_LONG_TIMEOUT = 2000,        /* 2 sec */
+};
+
+#define TPM_ACCESS(l)                   (0x0000 | ((l) << 12))
+#define TPM_INT_ENABLE(l)               (0x0008 | ((l) << 12))
+#define TPM_INT_VECTOR(l)               (0x000C | ((l) << 12))
+#define TPM_INT_STATUS(l)               (0x0010 | ((l) << 12))
+#define TPM_INTF_CAPS(l)                (0x0014 | ((l) << 12))
+#define TPM_STS(l)                      (0x0018 | ((l) << 12))
+#define TPM_DATA_FIFO(l)                (0x0024 | ((l) << 12))
+
+#define TPM_DID_VID(l)                  (0x0F00 | ((l) << 12))
+#define TPM_RID(l)                      (0x0F04 | ((l) << 12))
+
+static LIST_HEAD(tis_chips);
+static DEFINE_SPINLOCK(tis_lock);
+
+static int check_locality(struct tpm_chip *chip, int l)
+{
+        if ((ioread8(chip->vendor.iobase + TPM_ACCESS(l)) &
+             (TPM_ACCESS_ACTIVE_LOCALITY | TPM_ACCESS_VALID)) ==
+            (TPM_ACCESS_ACTIVE_LOCALITY | TPM_ACCESS_VALID))
+                return chip->vendor.locality = l;
+
+        return -1;
+}
+
+static void release_locality(struct tpm_chip *chip, int l, int force)
+{
+        if (force || (ioread8(chip->vendor.iobase + TPM_ACCESS(l)) &
+                      (TPM_ACCESS_REQUEST_PENDING | TPM_ACCESS_VALID)) ==
+            (TPM_ACCESS_REQUEST_PENDING | TPM_ACCESS_VALID))
+                iowrite8(TPM_ACCESS_ACTIVE_LOCALITY,
+                         chip->vendor.iobase + TPM_ACCESS(l));
+}
+
+static int request_locality(struct tpm_chip *chip, int l)
+{
+        unsigned long stop;
+        long rc;
+
+        if (check_locality(chip, l) >= 0)
+                return l;
+
+        iowrite8(TPM_ACCESS_REQUEST_USE,
+                 chip->vendor.iobase + TPM_ACCESS(l));
+
+        if (chip->vendor.irq) {
+                rc = wait_event_interruptible_timeout(chip->vendor.int_queue,
+                                                      (check_locality
+                                                       (chip, l) >= 0),
+                                                      chip->vendor.timeout_a);
+                if (rc > 0)
+                        return l;
+
+        } else {
+                /* wait for burstcount */
+                stop = jiffies + chip->vendor.timeout_a;
+                do {
+                        if (check_locality(chip, l) >= 0)
+                                return l;
+                        msleep(TPM_TIMEOUT);
+                }
+                while (time_before(jiffies, stop));
+        }
+        return -1;
+}
+
+static u8 tpm_tis_status(struct tpm_chip *chip)
+{
+        return ioread8(chip->vendor.iobase +
+                       TPM_STS(chip->vendor.locality));
+}
+
+static void tpm_tis_ready(struct tpm_chip *chip)
+{
+        /* this causes the current command to be aborted */
+        iowrite8(TPM_STS_COMMAND_READY,
+                 chip->vendor.iobase + TPM_STS(chip->vendor.locality));
+}
+
+static int get_burstcount(struct tpm_chip *chip)
+{
+        unsigned long stop;
+        int burstcnt;
+
+        /* wait for burstcount */
+        /* which timeout value, spec has 2 answers (c & d) */
+        stop = jiffies + chip->vendor.timeout_d;
+        do {
+                burstcnt = ioread8(chip->vendor.iobase +
+                                   TPM_STS(chip->vendor.locality) + 1);
+                burstcnt += ioread8(chip->vendor.iobase +
+                                    TPM_STS(chip->vendor.locality) +
+                                    2) << 8;
+                if (burstcnt)
+                        return burstcnt;
+                msleep(TPM_TIMEOUT);
+        } while (time_before(jiffies, stop));
+        return -EBUSY;
+}
+
+static int wait_for_stat(struct tpm_chip *chip, u8 mask, unsigned long timeout,
+                         wait_queue_head_t *queue)
+{
+        unsigned long stop;
+        long rc;
+        u8 status;
+
+        /* check current status */
+        status = tpm_tis_status(chip);
+        if ((status & mask) == mask)
+                return 0;
+
+        if (chip->vendor.irq) {
+                rc = wait_event_interruptible_timeout(*queue,
+                                                      ((tpm_tis_status
+                                                        (chip) & mask) ==
+                                                       mask), timeout);
+                if (rc > 0)
+                        return 0;
+        } else {
+                stop = jiffies + timeout;
+                do {
+                        msleep(TPM_TIMEOUT);
+                        status = tpm_tis_status(chip);
+                        if ((status & mask) == mask)
+                                return 0;
+                } while (time_before(jiffies, stop));
+        }
+        return -ETIME;
+}
+
+static int recv_data(struct tpm_chip *chip, u8 *buf, size_t count)
+{
+        int size = 0, burstcnt;
+        while (size < count &&
+               wait_for_stat(chip,
+                             TPM_STS_DATA_AVAIL | TPM_STS_VALID,
+                             chip->vendor.timeout_c,
+                             &chip->vendor.read_queue)
+               == 0) {
+                burstcnt = get_burstcount(chip);
+                for (; burstcnt > 0 && size < count; burstcnt--)
+                        buf[size++] = ioread8(chip->vendor.iobase +
+                                              TPM_DATA_FIFO(chip->vendor.
+                                                            locality));
+        }
+        return size;
+}
+
+static int tpm_tis_recv(struct tpm_chip *chip, u8 *buf, size_t count)
+{
+        int size = 0;
+        int expected, status;
+
+        if (count < TPM_HEADER_SIZE) {
+                size = -EIO;
+                goto out;
+        }
+
+        /* read first 10 bytes, including tag, paramsize, and result */
+        if ((size =
+             recv_data(chip, buf, TPM_HEADER_SIZE)) < TPM_HEADER_SIZE) {
+                dev_err(chip->dev, "Unable to read header\n");
+                goto out;
+        }
+
+        expected = be32_to_cpu(*(__be32 *) (buf + 2));
+        if (expected > count) {
+                size = -EIO;
+                goto out;
+        }
+
+        if ((size +=
+             recv_data(chip, &buf[TPM_HEADER_SIZE],
+                       expected - TPM_HEADER_SIZE)) < expected) {
+                dev_err(chip->dev, "Unable to read remainder of result\n");
+                size = -ETIME;
+                goto out;
+        }
+
+        wait_for_stat(chip, TPM_STS_VALID, chip->vendor.timeout_c,
+                      &chip->vendor.int_queue);
+        status = tpm_tis_status(chip);
+        if (status & TPM_STS_DATA_AVAIL) {      /* retry? */
+                dev_err(chip->dev, "Error left over data\n");
+                size = -EIO;
+                goto out;
+        }
+
+out:
+        tpm_tis_ready(chip);
+        release_locality(chip, chip->vendor.locality, 0);
+        return size;
+}
+
+/*
+ * If interrupts are used (signaled by an irq set in the vendor structure)
+ * tpm.c can skip polling for the data to be available as the interrupt is
+ * waited for here
+ */
+static int tpm_tis_send(struct tpm_chip *chip, u8 *buf, size_t len)
+{
+        int rc, status, burstcnt;
+        size_t count = 0;
+        u32 ordinal;
+
+        if (request_locality(chip, 0) < 0)
+                return -EBUSY;
+
+        status = tpm_tis_status(chip);
+        if ((status & TPM_STS_COMMAND_READY) == 0) {
+                tpm_tis_ready(chip);
+                if (wait_for_stat
+                    (chip, TPM_STS_COMMAND_READY, chip->vendor.timeout_b,
+                     &chip->vendor.int_queue) < 0) {
+                        rc = -ETIME;
+                        goto out_err;
+                }
+        }
+
+        while (count < len - 1) {
+                burstcnt = get_burstcount(chip);
+                for (; burstcnt > 0 && count < len - 1; burstcnt--) {
+                        iowrite8(buf[count], chip->vendor.iobase +
+                                 TPM_DATA_FIFO(chip->vendor.locality));
+                        count++;
+                }
+
+                wait_for_stat(chip, TPM_STS_VALID, chip->vendor.timeout_c,
+                              &chip->vendor.int_queue);
+                status = tpm_tis_status(chip);
+                if ((status & TPM_STS_DATA_EXPECT) == 0) {
+                        rc = -EIO;
+                        goto out_err;
+                }
+        }
+
+        /* write last byte */
+        iowrite8(buf[count],
+                 chip->vendor.iobase +
+                 TPM_DATA_FIFO(chip->vendor.locality));
+        wait_for_stat(chip, TPM_STS_VALID, chip->vendor.timeout_c,
+                      &chip->vendor.int_queue);
+        status = tpm_tis_status(chip);
+        if ((status & TPM_STS_DATA_EXPECT) != 0) {
+                rc = -EIO;
+                goto out_err;
+        }
+
+        /* go and do it */
+        iowrite8(TPM_STS_GO,
+                 chip->vendor.iobase + TPM_STS(chip->vendor.locality));
+
+        if (chip->vendor.irq) {
+                ordinal = be32_to_cpu(*((__be32 *) (buf + 6)));
+                if (wait_for_stat
+                    (chip, TPM_STS_DATA_AVAIL | TPM_STS_VALID,
+                     tpm_calc_ordinal_duration(chip, ordinal),
+                     &chip->vendor.read_queue) < 0) {
+                        rc = -ETIME;
+                        goto out_err;
+                }
+        }
+        return len;
+out_err:
+        tpm_tis_ready(chip);
+        release_locality(chip, chip->vendor.locality, 0);
+        return rc;
+}
+
+static struct file_operations tis_ops = {
+        .owner = THIS_MODULE,
+        .llseek = no_llseek,
+        .open = tpm_open,
+        .read = tpm_read,
+        .write = tpm_write,
+        .release = tpm_release,
+};
+
+static DEVICE_ATTR(pubek, S_IRUGO, tpm_show_pubek, NULL);
+static DEVICE_ATTR(pcrs, S_IRUGO, tpm_show_pcrs, NULL);
+static DEVICE_ATTR(enabled, S_IRUGO, tpm_show_enabled, NULL);
+static DEVICE_ATTR(active, S_IRUGO, tpm_show_active, NULL);
+static DEVICE_ATTR(owned, S_IRUGO, tpm_show_owned, NULL);
+static DEVICE_ATTR(temp_deactivated, S_IRUGO, tpm_show_temp_deactivated,
+                   NULL);
+static DEVICE_ATTR(caps, S_IRUGO, tpm_show_caps_1_2, NULL);
+static DEVICE_ATTR(cancel, S_IWUSR | S_IWGRP, NULL, tpm_store_cancel);
+
+static struct attribute *tis_attrs[] = {
+        &dev_attr_pubek.attr,
+        &dev_attr_pcrs.attr,
+        &dev_attr_enabled.attr,
+        &dev_attr_active.attr,
+        &dev_attr_owned.attr,
+        &dev_attr_temp_deactivated.attr,
+        &dev_attr_caps.attr,
+        &dev_attr_cancel.attr, NULL,
+};
+
+static struct attribute_group tis_attr_grp = {
+        .attrs = tis_attrs
+};
+
+static struct tpm_vendor_specific tpm_tis = {
+        .status = tpm_tis_status,
+        .recv = tpm_tis_recv,
+        .send = tpm_tis_send,
+        .cancel = tpm_tis_ready,
+        .req_complete_mask = TPM_STS_DATA_AVAIL | TPM_STS_VALID,
+        .req_complete_val = TPM_STS_DATA_AVAIL | TPM_STS_VALID,
+        .req_canceled = TPM_STS_COMMAND_READY,
+        .attr_group = &tis_attr_grp,
+        .miscdev = {
+                    .fops = &tis_ops,},
+};
+
+static irqreturn_t tis_int_probe(int irq, void *dev_id, struct pt_regs *regs)
+{
+        struct tpm_chip *chip = (struct tpm_chip *) dev_id;
+        u32 interrupt;
+
+        interrupt = ioread32(chip->vendor.iobase +
+                             TPM_INT_STATUS(chip->vendor.locality));
+
+        if (interrupt == 0)
+                return IRQ_NONE;
+
+        chip->vendor.irq = irq;
+
+        /* Clear interrupts handled with TPM_EOI */
+        iowrite32(interrupt,
+                  chip->vendor.iobase +
+                  TPM_INT_STATUS(chip->vendor.locality));
+        return IRQ_HANDLED;
+}
+
+static irqreturn_t tis_int_handler(int irq, void *dev_id, struct pt_regs *regs)
+{
+        struct tpm_chip *chip = (struct tpm_chip *) dev_id;
+        u32 interrupt;
+        int i;
+
+        interrupt = ioread32(chip->vendor.iobase +
+                             TPM_INT_STATUS(chip->vendor.locality));
+
+        if (interrupt == 0)
+                return IRQ_NONE;
+
+        if (interrupt & TPM_INTF_DATA_AVAIL_INT)
+                wake_up_interruptible(&chip->vendor.read_queue);
+        if (interrupt & TPM_INTF_LOCALITY_CHANGE_INT)
+                for (i = 0; i < 5; i++)
+                        if (check_locality(chip, i) >= 0)
+                                break;
+        if (interrupt &
+            (TPM_INTF_LOCALITY_CHANGE_INT | TPM_INTF_STS_VALID_INT |
+             TPM_INTF_CMD_READY_INT))
+                wake_up_interruptible(&chip->vendor.int_queue);
+
+        /* Clear interrupts handled with TPM_EOI */
+        iowrite32(interrupt,
+                  chip->vendor.iobase +
+                  TPM_INT_STATUS(chip->vendor.locality));
+        return IRQ_HANDLED;
+}
+
+static int interrupts = 1;
+module_param(interrupts, bool, 0444);
+MODULE_PARM_DESC(interrupts, "Enable interrupts");
+
+static int __devinit tpm_tis_pnp_init(struct pnp_dev *pnp_dev,
+                                      const struct pnp_device_id *pnp_id)
+{
+        u32 vendor, intfcaps, intmask;
+        int rc, i;
+        unsigned long start, len;
+        struct tpm_chip *chip;
+
+        start = pnp_mem_start(pnp_dev, 0);
+        len = pnp_mem_len(pnp_dev, 0);
+
+        if (!start)
+                start = TIS_MEM_BASE;
+        if (!len)
+                len = TIS_MEM_LEN;
+
+        if (!(chip = tpm_register_hardware(&pnp_dev->dev, &tpm_tis)))
+                return -ENODEV;
+
+        chip->vendor.iobase = ioremap(start, len);
+        if (!chip->vendor.iobase) {
+                rc = -EIO;
+                goto out_err;
+        }
+
+        vendor = ioread32(chip->vendor.iobase + TPM_DID_VID(0));
+        if ((vendor & 0xFFFF) == 0xFFFF) {
+                rc = -ENODEV;
+                goto out_err;
+        }
+
+        /* Default timeouts */
+        chip->vendor.timeout_a = msecs_to_jiffies(TIS_SHORT_TIMEOUT);
+        chip->vendor.timeout_b = msecs_to_jiffies(TIS_LONG_TIMEOUT);
+        chip->vendor.timeout_c = msecs_to_jiffies(TIS_SHORT_TIMEOUT);
+        chip->vendor.timeout_d = msecs_to_jiffies(TIS_SHORT_TIMEOUT);
+
+        dev_info(&pnp_dev->dev,
+                 "1.2 TPM (device-id 0x%X, rev-id %d)\n",
+                 vendor >> 16, ioread8(chip->vendor.iobase + TPM_RID(0)));
+
+        /* Figure out the capabilities */
+        intfcaps =
+            ioread32(chip->vendor.iobase +
+                     TPM_INTF_CAPS(chip->vendor.locality));
+        dev_dbg(&pnp_dev->dev, "TPM interface capabilities (0x%x):\n",
+                intfcaps);
+        if (intfcaps & TPM_INTF_BURST_COUNT_STATIC)
+                dev_dbg(&pnp_dev->dev, "\tBurst Count Static\n");
+        if (intfcaps & TPM_INTF_CMD_READY_INT)
+                dev_dbg(&pnp_dev->dev, "\tCommand Ready Int Support\n");
+        if (intfcaps & TPM_INTF_INT_EDGE_FALLING)
+                dev_dbg(&pnp_dev->dev, "\tInterrupt Edge Falling\n");
+        if (intfcaps & TPM_INTF_INT_EDGE_RISING)
+                dev_dbg(&pnp_dev->dev, "\tInterrupt Edge Rising\n");
+        if (intfcaps & TPM_INTF_INT_LEVEL_LOW)
+                dev_dbg(&pnp_dev->dev, "\tInterrupt Level Low\n");
+        if (intfcaps & TPM_INTF_INT_LEVEL_HIGH)
+                dev_dbg(&pnp_dev->dev, "\tInterrupt Level High\n");
+        if (intfcaps & TPM_INTF_LOCALITY_CHANGE_INT)
+                dev_dbg(&pnp_dev->dev, "\tLocality Change Int Support\n");
+        if (intfcaps & TPM_INTF_STS_VALID_INT)
+                dev_dbg(&pnp_dev->dev, "\tSts Valid Int Support\n");
+        if (intfcaps & TPM_INTF_DATA_AVAIL_INT)
+                dev_dbg(&pnp_dev->dev, "\tData Avail Int Support\n");
+
+        if (request_locality(chip, 0) != 0) {
+                rc = -ENODEV;
+                goto out_err;
+        }
+
+        /* INTERRUPT Setup */
+        init_waitqueue_head(&chip->vendor.read_queue);
+        init_waitqueue_head(&chip->vendor.int_queue);
+
+        intmask =
+            ioread32(chip->vendor.iobase +
+                     TPM_INT_ENABLE(chip->vendor.locality));
+
+        intmask |= TPM_INTF_CMD_READY_INT
+            | TPM_INTF_LOCALITY_CHANGE_INT | TPM_INTF_DATA_AVAIL_INT
+            | TPM_INTF_STS_VALID_INT;
+
+        iowrite32(intmask,
+                  chip->vendor.iobase +
+                  TPM_INT_ENABLE(chip->vendor.locality));
+        if (interrupts) {
+                chip->vendor.irq =
+                    ioread8(chip->vendor.iobase +
+                            TPM_INT_VECTOR(chip->vendor.locality));
+
+                for (i = 3; i < 16 && chip->vendor.irq == 0; i++) {
+                        iowrite8(i, chip->vendor.iobase +
+                                    TPM_INT_VECTOR(chip->vendor.locality));
+                        if (request_irq
+                            (i, tis_int_probe, SA_SHIRQ,
+                             chip->vendor.miscdev.name, chip) != 0) {
+                                dev_info(chip->dev,
+                                         "Unable to request irq: %d for probe\n",
+                                         i);
+                                continue;
+                        }
+
+                        /* Clear all existing */
+                        iowrite32(ioread32
+                                  (chip->vendor.iobase +
+                                   TPM_INT_STATUS(chip->vendor.locality)),
+                                  chip->vendor.iobase +
+                                  TPM_INT_STATUS(chip->vendor.locality));
+
+                        /* Turn on */
+                        iowrite32(intmask | TPM_GLOBAL_INT_ENABLE,
+                                  chip->vendor.iobase +
+                                  TPM_INT_ENABLE(chip->vendor.locality));
+
+                        /* Generate Interrupts */
+                        tpm_gen_interrupt(chip);
+
+                        /* Turn off */
+                        iowrite32(intmask,
+                                  chip->vendor.iobase +
+                                  TPM_INT_ENABLE(chip->vendor.locality));
+                        free_irq(i, chip);
+                }
+        }
+        if (chip->vendor.irq) {
+                iowrite8(chip->vendor.irq,
+                         chip->vendor.iobase +
+                         TPM_INT_VECTOR(chip->vendor.locality));
+                if (request_irq
+                    (chip->vendor.irq, tis_int_handler, SA_SHIRQ,
+                     chip->vendor.miscdev.name, chip) != 0) {
+                        dev_info(chip->dev,
+                                 "Unable to request irq: %d for use\n",
+                                 chip->vendor.irq);
+                        chip->vendor.irq = 0;
+                } else {
+                        /* Clear all existing */
+                        iowrite32(ioread32
+                                  (chip->vendor.iobase +
+                                   TPM_INT_STATUS(chip->vendor.locality)),
+                                  chip->vendor.iobase +
+                                  TPM_INT_STATUS(chip->vendor.locality));
+
+                        /* Turn on */
+                        iowrite32(intmask | TPM_GLOBAL_INT_ENABLE,
+                                  chip->vendor.iobase +
+                                  TPM_INT_ENABLE(chip->vendor.locality));
+                }
+        }
+
+        INIT_LIST_HEAD(&chip->vendor.list);
+        spin_lock(&tis_lock);
+        list_add(&chip->vendor.list, &tis_chips);
+        spin_unlock(&tis_lock);
+
+        tpm_get_timeouts(chip);
+        tpm_continue_selftest(chip);
+
+        return 0;
+out_err:
+        if (chip->vendor.iobase)
+                iounmap(chip->vendor.iobase);
+        tpm_remove_hardware(chip->dev);
+        return rc;
+}
+
+static int tpm_tis_pnp_suspend(struct pnp_dev *dev, pm_message_t msg)
+{
+        return tpm_pm_suspend(&dev->dev, msg);
+}
+
+static int tpm_tis_pnp_resume(struct pnp_dev *dev)
+{
+        return tpm_pm_resume(&dev->dev);
+}
+
+static struct pnp_device_id tpm_pnp_tbl[] __devinitdata = {
+        {"PNP0C31", 0},         /* TPM */
+        {"ATM1200", 0},         /* Atmel */
+        {"IFX0102", 0},         /* Infineon */
+        {"BCM0101", 0},         /* Broadcom */
+        {"NSC1200", 0},         /* National */
+        /* Add new here */
+        {"", 0},                /* User Specified */
+        {"", 0}                 /* Terminator */
+};
+
+static struct pnp_driver tis_pnp_driver = {
+        .name = "tpm_tis",
+        .id_table = tpm_pnp_tbl,
+        .probe = tpm_tis_pnp_init,
+        .suspend = tpm_tis_pnp_suspend,
+        .resume = tpm_tis_pnp_resume,
+};
+
+#define TIS_HID_USR_IDX sizeof(tpm_pnp_tbl)/sizeof(struct pnp_device_id) -2
+module_param_string(hid, tpm_pnp_tbl[TIS_HID_USR_IDX].id,
+                    sizeof(tpm_pnp_tbl[TIS_HID_USR_IDX].id), 0444);
+MODULE_PARM_DESC(hid, "Set additional specific HID for this driver to probe");
+
+static int __init init_tis(void)
+{
+        return pnp_register_driver(&tis_pnp_driver);
+}
+
+static void __exit cleanup_tis(void)
+{
+        struct tpm_vendor_specific *i, *j;
+        struct tpm_chip *chip;
+        spin_lock(&tis_lock);
+        list_for_each_entry_safe(i, j, &tis_chips, list) {
+                chip = to_tpm_chip(i);
+                iowrite32(~TPM_GLOBAL_INT_ENABLE &
+                          ioread32(chip->vendor.iobase +
+                                   TPM_INT_ENABLE(chip->vendor.
+                                                  locality)),
+                          chip->vendor.iobase +
+                          TPM_INT_ENABLE(chip->vendor.locality));
+                release_locality(chip, chip->vendor.locality, 1);
+                if (chip->vendor.irq)
+                        free_irq(chip->vendor.irq, chip);
+                iounmap(i->iobase);
+                list_del(&i->list);
+                tpm_remove_hardware(chip->dev);
+        }
+        spin_unlock(&tis_lock);
+        pnp_unregister_driver(&tis_pnp_driver);
+}
+
+module_init(init_tis);
+module_exit(cleanup_tis);
+MODULE_AUTHOR("Leendert van Doorn (leendert@watson.ibm.com)");
+MODULE_DESCRIPTION("TPM Driver");
+MODULE_VERSION("2.0");
+MODULE_LICENSE("GPL");