[PATCH v5 7/7] tpm: create TPM 2.0 devices using own device class

From: Jarkko Sakkinen
Date: Sat Nov 01 2014 - 05:02:35 EST

Added own class for TPM devices that is used for TPM 2.0 and onwards.
For TPM1 old device structure is kept for backwards compatibility.

Each struct tpm_chip represents a character device that is associated
to the tpm device class.

Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@xxxxxxxxxxxxxxx>
---
drivers/char/tpm/tpm-chip.c | 14 +++++--
drivers/char/tpm/tpm-dev.c | 77 ++++++++++++++++++++++++++++++++++---
drivers/char/tpm/tpm-interface.c | 51 +++++++++++++++++-------
drivers/char/tpm/tpm-sysfs.c | 6 +--
drivers/char/tpm/tpm.h | 16 +++++++-
drivers/char/tpm/tpm_atmel.c | 14 +++----
drivers/char/tpm/tpm_crb.c | 4 +-
drivers/char/tpm/tpm_i2c_atmel.c | 16 ++++----
drivers/char/tpm/tpm_i2c_infineon.c | 6 +--
drivers/char/tpm/tpm_i2c_nuvoton.c | 22 +++++------
drivers/char/tpm/tpm_i2c_stm_st33.c | 6 +--
drivers/char/tpm/tpm_infineon.c | 22 +++++------
drivers/char/tpm/tpm_nsc.c | 20 +++++-----
drivers/char/tpm/tpm_ppi.c | 4 +-
drivers/char/tpm/tpm_tis.c | 12 +++---
15 files changed, 199 insertions(+), 91 deletions(-)

diff --git a/drivers/char/tpm/tpm-chip.c b/drivers/char/tpm/tpm-chip.c
index 9d2038b..9cc3ccf 100644
--- a/drivers/char/tpm/tpm-chip.c
+++ b/drivers/char/tpm/tpm-chip.c
@@ -45,7 +45,7 @@ struct tpm_chip *tpm_chip_find_get(int chip_num)
if (chip_num != TPM_ANY_NUM && chip_num != pos->dev_num)
continue;

- if (try_module_get(pos->dev->driver->owner)) {
+ if (try_module_get(pos->pdev->driver->owner)) {
chip = pos;
break;
}
@@ -111,7 +111,7 @@ struct tpm_chip *tpmm_chip_alloc(struct device *dev,
scnprintf(chip->devname, sizeof(chip->devname), "%s%d", "tpm",
chip->dev_num);

- chip->dev = dev;
+ chip->pdev = dev;
devm_add_action(dev, tpmm_chip_remove, chip);
dev_set_drvdata(dev, chip);

@@ -140,7 +140,10 @@ int tpm_chip_register(struct tpm_chip *chip)
{
int rc;

- rc = tpm_dev_add_device(chip);
+ if (chip->flags & TPM_CHIP_FLAG_TPM2)
+ rc = tpm2_dev_add_device(chip);
+ else
+ rc = tpm_dev_add_device(chip);
if (rc)
return rc;

@@ -198,6 +201,9 @@ void tpm_chip_unregister(struct tpm_chip *chip)
tpm_sysfs_del_device(chip);
}

- tpm_dev_del_device(chip);
+ if (chip->flags & TPM_CHIP_FLAG_TPM2)
+ tpm2_dev_del_device(chip);
+ else
+ tpm_dev_del_device(chip);
}
EXPORT_SYMBOL_GPL(tpm_chip_unregister);
diff --git a/drivers/char/tpm/tpm-dev.c b/drivers/char/tpm/tpm-dev.c
index d9b774e..8c4ab94 100644
--- a/drivers/char/tpm/tpm-dev.c
+++ b/drivers/char/tpm/tpm-dev.c
@@ -22,6 +22,8 @@
#include <linux/uaccess.h>
#include "tpm.h"

+static dev_t tpm_devt;
+
struct file_priv {
struct tpm_chip *chip;

@@ -63,7 +65,7 @@ static int tpm_open(struct inode *inode, struct file *file)
* by the check of is_open variable, which is protected
* by driver_lock. */
if (test_and_set_bit(0, &chip->is_open)) {
- dev_dbg(chip->dev, "Another process owns this TPM\n");
+ dev_dbg(chip->pdev, "Another process owns this TPM\n");
return -EBUSY;
}

@@ -81,7 +83,7 @@ static int tpm_open(struct inode *inode, struct file *file)
INIT_WORK(&priv->work, timeout_work);

file->private_data = priv;
- get_device(chip->dev);
+ get_device(chip->pdev);
return 0;
}

@@ -168,7 +170,7 @@ static int tpm_release(struct inode *inode, struct file *file)
file->private_data = NULL;
atomic_set(&priv->data_pending, 0);
clear_bit(0, &priv->chip->is_open);
- put_device(priv->chip->dev);
+ put_device(priv->chip->pdev);
kfree(priv);
return 0;
}
@@ -193,12 +195,12 @@ int tpm_dev_add_device(struct tpm_chip *chip)
chip->vendor.miscdev.minor = MISC_DYNAMIC_MINOR;

chip->vendor.miscdev.name = chip->devname;
- chip->vendor.miscdev.parent = chip->dev;
+ chip->vendor.miscdev.parent = chip->pdev;

rc = misc_register(&chip->vendor.miscdev);
if (rc) {
chip->vendor.miscdev.name = NULL;
- dev_err(chip->dev,
+ dev_err(chip->pdev,
"unable to misc_register %s, minor %d err=%d\n",
chip->vendor.miscdev.name,
chip->vendor.miscdev.minor, rc);
@@ -211,3 +213,68 @@ void tpm_dev_del_device(struct tpm_chip *chip)
if (chip->vendor.miscdev.name)
misc_deregister(&chip->vendor.miscdev);
}
+
+static void tpm_dev_release(struct device *dev)
+{
+}
+
+int tpm2_dev_add_device(struct tpm_chip *chip)
+{
+ int rc;
+
+ chip->dev.parent = chip->pdev;
+ chip->dev.class = tpm_class;
+ chip->dev.release = tpm_dev_release;
+ chip->dev.devt = MKDEV(MAJOR(tpm_devt), chip->dev_num);
+
+ dev_set_name(&chip->dev, "tpm%d", chip->dev_num);
+
+ cdev_init(&chip->cdev, &tpm_fops);
+
+ chip->cdev.owner = chip->pdev->driver->owner;
+
+ rc = device_register(&chip->dev);
+ if (rc) {
+
+ dev_err(chip->pdev,
+ "tpm: registering %s failed with %d\n",
+ chip->devname, rc);
+ put_device(&chip->dev);
+ return rc;
+ }
+
+ rc = cdev_add(&chip->cdev, chip->dev.devt, 1);
+ if (rc) {
+ dev_err(&chip->dev, "adding cdev for %s failed with %d\n",
+ chip->devname, rc);
+ device_unregister(&chip->dev);
+ put_device(&chip->dev);
+ return rc;
+ }
+
+ return 0;
+}
+
+void tpm2_dev_del_device(struct tpm_chip *chip)
+{
+ if (get_device(&chip->dev) != NULL) {
+ cdev_del(&chip->cdev);
+ device_unregister(&chip->dev);
+ put_device(&chip->dev);
+ }
+}
+
+void __init tpm_dev_init(void)
+{
+ int rc;
+
+ rc = alloc_chrdev_region(&tpm_devt, 0, TPM_NUM_DEVICES, "tpm");
+ if (rc < 0)
+ pr_err("tpm: failed to allocate char dev region\n");
+}
+
+void __exit tpm_dev_exit(void)
+{
+ if (tpm_devt)
+ unregister_chrdev_region(tpm_devt, TPM_NUM_DEVICES);
+}
diff --git a/drivers/char/tpm/tpm-interface.c b/drivers/char/tpm/tpm-interface.c
index a98532f..41426fb 100644
--- a/drivers/char/tpm/tpm-interface.c
+++ b/drivers/char/tpm/tpm-interface.c
@@ -38,6 +38,8 @@
#define TPM_PROTECTED_COMMAND 0x00
#define TPM_CONNECTION_COMMAND 0x40

+struct class *tpm_class;
+
/*
* Bug workaround - some TPM's don't flush the most
* recently changed pcr on suspend, so force the flush
@@ -343,7 +345,7 @@ ssize_t tpm_transmit(struct tpm_chip *chip, const char *buf,
if (count == 0)
return -ENODATA;
if (count > bufsiz) {
- dev_err(chip->dev,
+ dev_err(chip->pdev,
"invalid count value %x %zx\n", count, bufsiz);
return -E2BIG;
}
@@ -352,7 +354,7 @@ ssize_t tpm_transmit(struct tpm_chip *chip, const char *buf,

rc = chip->ops->send(chip, (u8 *) buf, count);
if (rc < 0) {
- dev_err(chip->dev,
+ dev_err(chip->pdev,
"tpm_transmit: tpm_send: error %zd\n", rc);
goto out;
}
@@ -371,7 +373,7 @@ ssize_t tpm_transmit(struct tpm_chip *chip, const char *buf,
goto out_recv;

if (chip->ops->req_canceled(chip, status)) {
- dev_err(chip->dev, "Operation Canceled\n");
+ dev_err(chip->pdev, "Operation Canceled\n");
rc = -ECANCELED;
goto out;
}
@@ -381,14 +383,14 @@ ssize_t tpm_transmit(struct tpm_chip *chip, const char *buf,
} while (time_before(jiffies, stop));

chip->ops->cancel(chip);
- dev_err(chip->dev, "Operation Timed out\n");
+ dev_err(chip->pdev, "Operation Timed out\n");
rc = -ETIME;
goto out;

out_recv:
rc = chip->ops->recv(chip, (u8 *) buf, bufsiz);
if (rc < 0)
- dev_err(chip->dev,
+ dev_err(chip->pdev,
"tpm_transmit: tpm_recv: error %zd\n", rc);
out:
mutex_unlock(&chip->tpm_mutex);
@@ -414,7 +416,7 @@ ssize_t tpm_transmit_cmd(struct tpm_chip *chip, void *cmd,

err = be32_to_cpu(header->return_code);
if (err != 0 && desc)
- dev_err(chip->dev, "A TPM error (%d) occurred %s\n", err, desc);
+ dev_err(chip->pdev, "A TPM error (%d) occurred %s\n", err, desc);

return err;
}
@@ -508,7 +510,7 @@ int tpm_get_timeouts(struct tpm_chip *chip)
if (rc == TPM_ERR_INVALID_POSTINIT) {
/* The TPM is not started, we are the first to talk to it.
Execute a startup command. */
- dev_info(chip->dev, "Issuing TPM_STARTUP");
+ dev_info(chip->pdev, "Issuing TPM_STARTUP");
if (tpm_startup(chip, TPM_ST_CLEAR))
return rc;

@@ -520,7 +522,7 @@ int tpm_get_timeouts(struct tpm_chip *chip)
NULL);
}
if (rc) {
- dev_err(chip->dev,
+ dev_err(chip->pdev,
"A TPM error (%zd) occurred attempting to determine the timeouts\n",
rc);
goto duration;
@@ -559,7 +561,7 @@ int tpm_get_timeouts(struct tpm_chip *chip)

/* Report adjusted timeouts */
if (chip->vendor.timeout_adjusted) {
- dev_info(chip->dev,
+ dev_info(chip->pdev,
HW_ERR "Adjusting reported timeouts: A %lu->%luus B %lu->%luus C %lu->%luus D %lu->%luus\n",
old_timeout[0], new_timeout[0],
old_timeout[1], new_timeout[1],
@@ -606,7 +608,7 @@ duration:
chip->vendor.duration[TPM_MEDIUM] *= 1000;
chip->vendor.duration[TPM_LONG] *= 1000;
chip->vendor.duration_adjusted = true;
- dev_info(chip->dev, "Adjusting TPM timeout parameters.");
+ dev_info(chip->pdev, "Adjusting TPM timeout parameters.");
}
return 0;
}
@@ -772,7 +774,7 @@ int tpm_do_selftest(struct tpm_chip *chip)
* around 300ms while the self test is ongoing, keep trying
* until the self test duration expires. */
if (rc == -ETIME) {
- dev_info(chip->dev, HW_ERR "TPM command timed out during continue self test");
+ dev_info(chip->pdev, HW_ERR "TPM command timed out during continue self test");
msleep(delay_msec);
continue;
}
@@ -782,7 +784,7 @@ int tpm_do_selftest(struct tpm_chip *chip)

rc = be32_to_cpu(cmd.header.out.return_code);
if (rc == TPM_ERR_DISABLED || rc == TPM_ERR_DEACTIVATED) {
- dev_info(chip->dev,
+ dev_info(chip->pdev,
"TPM is disabled/deactivated (0x%X)\n", rc);
/* TPM is disabled and/or deactivated; driver can
* proceed and TPM does handle commands for
@@ -930,10 +932,10 @@ int tpm_pm_suspend(struct device *dev)
}

if (rc)
- dev_err(chip->dev,
+ dev_err(chip->pdev,
"Error (%d) sending savestate before suspend\n", rc);
else if (try > 0)
- dev_warn(chip->dev, "TPM savestate took %dms\n",
+ dev_warn(chip->pdev, "TPM savestate took %dms\n",
try * TPM_TIMEOUT_RETRY);

return rc;
@@ -1014,6 +1016,27 @@ int tpm_get_random(u32 chip_num, u8 *out, size_t max)
}
EXPORT_SYMBOL_GPL(tpm_get_random);

+static int __init tpm_init(void)
+{
+ tpm_class = class_create(THIS_MODULE, "tpm");
+ if (IS_ERR(tpm_class)) {
+ pr_err("couldn't create tpm class\n");
+ return PTR_ERR(tpm_class);
+ }
+
+ tpm_dev_init();
+ return 0;
+}
+
+static void __exit tpm_exit(void)
+{
+ tpm_dev_exit();
+ class_destroy(tpm_class);
+}
+
+subsys_initcall(tpm_init);
+module_exit(tpm_exit);
+
MODULE_AUTHOR("Leendert van Doorn (leendert@xxxxxxxxxxxxxx)");
MODULE_DESCRIPTION("TPM Driver");
MODULE_VERSION("2.0");
diff --git a/drivers/char/tpm/tpm-sysfs.c b/drivers/char/tpm/tpm-sysfs.c
index 8ecb052..ee66fd4 100644
--- a/drivers/char/tpm/tpm-sysfs.c
+++ b/drivers/char/tpm/tpm-sysfs.c
@@ -284,16 +284,16 @@ static const struct attribute_group tpm_dev_group = {
int tpm_sysfs_add_device(struct tpm_chip *chip)
{
int err;
- err = sysfs_create_group(&chip->dev->kobj,
+ err = sysfs_create_group(&chip->pdev->kobj,
&tpm_dev_group);

if (err)
- dev_err(chip->dev,
+ dev_err(chip->pdev,
"failed to create sysfs attributes, %d\n", err);
return err;
}

void tpm_sysfs_del_device(struct tpm_chip *chip)
{
- sysfs_remove_group(&chip->dev->kobj, &tpm_dev_group);
+ sysfs_remove_group(&chip->pdev->kobj, &tpm_dev_group);
}
diff --git a/drivers/char/tpm/tpm.h b/drivers/char/tpm/tpm.h
index 076456a..97963d3 100644
--- a/drivers/char/tpm/tpm.h
+++ b/drivers/char/tpm/tpm.h
@@ -28,6 +28,7 @@
#include <linux/io.h>
#include <linux/tpm.h>
#include <linux/acpi.h>
+#include <linux/cdev.h>

enum tpm_const {
TPM_MINOR = 224, /* officially assigned */
@@ -153,7 +154,11 @@ enum tpm_chip_flags {
};

struct tpm_chip {
- struct device *dev; /* Device stuff */
+ /* Device associations */
+ struct device *pdev;
+ struct device dev;
+ struct cdev cdev;
+
const struct tpm_class_ops *ops;
unsigned int flags;

@@ -180,7 +185,7 @@ struct tpm_chip {

static inline void tpm_chip_put(struct tpm_chip *chip)
{
- module_put(chip->dev->driver->owner);
+ module_put(chip->pdev->driver->owner);
}

static inline int tpm_read_index(int base, int index)
@@ -376,6 +381,8 @@ struct tpm_cmd_t {
tpm_cmd_params params;
} __packed;

+extern struct class *tpm_class;
+
ssize_t tpm_getcap(struct device *, __be32, cap_t *, const char *);
ssize_t tpm_transmit(struct tpm_chip *chip, const char *buf,
size_t bufsiz);
@@ -398,6 +405,11 @@ extern void tpm_chip_unregister(struct tpm_chip *chip);

int tpm_dev_add_device(struct tpm_chip *chip);
void tpm_dev_del_device(struct tpm_chip *chip);
+int tpm2_dev_add_device(struct tpm_chip *chip);
+void tpm2_dev_del_device(struct tpm_chip *chip);
+void tpm_dev_init(void);
+void tpm_dev_exit(void);
+
int tpm_sysfs_add_device(struct tpm_chip *chip);
void tpm_sysfs_del_device(struct tpm_chip *chip);

diff --git a/drivers/char/tpm/tpm_atmel.c b/drivers/char/tpm/tpm_atmel.c
index fb2f921..387b0c0 100644
--- a/drivers/char/tpm/tpm_atmel.c
+++ b/drivers/char/tpm/tpm_atmel.c
@@ -49,7 +49,7 @@ static int tpm_atml_recv(struct tpm_chip *chip, u8 *buf, size_t count)
for (i = 0; i < 6; i++) {
status = ioread8(chip->vendor.iobase + 1);
if ((status & ATML_STATUS_DATA_AVAIL) == 0) {
- dev_err(chip->dev, "error reading header\n");
+ dev_err(chip->pdev, "error reading header\n");
return -EIO;
}
*buf++ = ioread8(chip->vendor.iobase);
@@ -60,12 +60,12 @@ static int tpm_atml_recv(struct tpm_chip *chip, u8 *buf, size_t count)
size = be32_to_cpu(*native_size);

if (count < size) {
- dev_err(chip->dev,
+ dev_err(chip->pdev,
"Recv size(%d) less than available space\n", size);
for (; i < size; i++) { /* clear the waiting data anyway */
status = ioread8(chip->vendor.iobase + 1);
if ((status & ATML_STATUS_DATA_AVAIL) == 0) {
- dev_err(chip->dev, "error reading data\n");
+ dev_err(chip->pdev, "error reading data\n");
return -EIO;
}
}
@@ -76,7 +76,7 @@ static int tpm_atml_recv(struct tpm_chip *chip, u8 *buf, size_t count)
for (; i < size; i++) {
status = ioread8(chip->vendor.iobase + 1);
if ((status & ATML_STATUS_DATA_AVAIL) == 0) {
- dev_err(chip->dev, "error reading data\n");
+ dev_err(chip->pdev, "error reading data\n");
return -EIO;
}
*buf++ = ioread8(chip->vendor.iobase);
@@ -86,7 +86,7 @@ static int tpm_atml_recv(struct tpm_chip *chip, u8 *buf, size_t count)
status = ioread8(chip->vendor.iobase + 1);

if (status & ATML_STATUS_DATA_AVAIL) {
- dev_err(chip->dev, "data available is stuck\n");
+ dev_err(chip->pdev, "data available is stuck\n");
return -EIO;
}

@@ -97,9 +97,9 @@ static int tpm_atml_send(struct tpm_chip *chip, u8 *buf, size_t count)
{
int i;

- dev_dbg(chip->dev, "tpm_atml_send:\n");
+ dev_dbg(chip->pdev, "tpm_atml_send:\n");
for (i = 0; i < count; i++) {
- dev_dbg(chip->dev, "%d 0x%x(%d)\n", i, buf[i], buf[i]);
+ dev_dbg(chip->pdev, "%d 0x%x(%d)\n", i, buf[i], buf[i]);
iowrite8(buf[i], chip->vendor.iobase);
}

diff --git a/drivers/char/tpm/tpm_crb.c b/drivers/char/tpm/tpm_crb.c
index 3b7202c..c95ddc9 100644
--- a/drivers/char/tpm/tpm_crb.c
+++ b/drivers/char/tpm/tpm_crb.c
@@ -169,7 +169,7 @@ static int crb_send(struct tpm_chip *chip, u8 *buf, size_t len)
cca = priv->cca;

if (len > le32_to_cpu(cca->cmd_size)) {
- dev_err(chip->dev,
+ dev_err(chip->pdev,
"invalid command count value %x %zx\n",
(unsigned int) len,
(size_t) le32_to_cpu(cca->cmd_size));
@@ -200,7 +200,7 @@ static void crb_cancel(struct tpm_chip *chip)
wmb();

if (crb_do_acpi_start(chip))
- dev_err(chip->dev, "ACPI Start failed\n");
+ dev_err(chip->pdev, "ACPI Start failed\n");

cca->cancel = 0;
}
diff --git a/drivers/char/tpm/tpm_i2c_atmel.c b/drivers/char/tpm/tpm_i2c_atmel.c
index 8af3b4a..dfef1ae 100644
--- a/drivers/char/tpm/tpm_i2c_atmel.c
+++ b/drivers/char/tpm/tpm_i2c_atmel.c
@@ -52,7 +52,7 @@ struct priv_data {
static int i2c_atmel_send(struct tpm_chip *chip, u8 *buf, size_t len)
{
struct priv_data *priv = chip->vendor.priv;
- struct i2c_client *client = to_i2c_client(chip->dev);
+ struct i2c_client *client = to_i2c_client(chip->pdev);
s32 status;

priv->len = 0;
@@ -62,7 +62,7 @@ static int i2c_atmel_send(struct tpm_chip *chip, u8 *buf, size_t len)

status = i2c_master_send(client, buf, len);

- dev_dbg(chip->dev,
+ dev_dbg(chip->pdev,
"%s(buf=%*ph len=%0zx) -> sts=%d\n", __func__,
(int)min_t(size_t, 64, len), buf, len, status);
return status;
@@ -71,7 +71,7 @@ static int i2c_atmel_send(struct tpm_chip *chip, u8 *buf, size_t len)
static int i2c_atmel_recv(struct tpm_chip *chip, u8 *buf, size_t count)
{
struct priv_data *priv = chip->vendor.priv;
- struct i2c_client *client = to_i2c_client(chip->dev);
+ struct i2c_client *client = to_i2c_client(chip->pdev);
struct tpm_output_header *hdr =
(struct tpm_output_header *)priv->buffer;
u32 expected_len;
@@ -88,7 +88,7 @@ static int i2c_atmel_recv(struct tpm_chip *chip, u8 *buf, size_t count)
return -ENOMEM;

if (priv->len >= expected_len) {
- dev_dbg(chip->dev,
+ dev_dbg(chip->pdev,
"%s early(buf=%*ph count=%0zx) -> ret=%d\n", __func__,
(int)min_t(size_t, 64, expected_len), buf, count,
expected_len);
@@ -97,7 +97,7 @@ static int i2c_atmel_recv(struct tpm_chip *chip, u8 *buf, size_t count)
}

rc = i2c_master_recv(client, buf, expected_len);
- dev_dbg(chip->dev,
+ dev_dbg(chip->pdev,
"%s reread(buf=%*ph count=%0zx) -> ret=%d\n", __func__,
(int)min_t(size_t, 64, expected_len), buf, count,
expected_len);
@@ -106,13 +106,13 @@ static int i2c_atmel_recv(struct tpm_chip *chip, u8 *buf, size_t count)

static void i2c_atmel_cancel(struct tpm_chip *chip)
{
- dev_err(chip->dev, "TPM operation cancellation was requested, but is not supported");
+ dev_err(chip->pdev, "TPM operation cancellation was requested, but is not supported");
}

static u8 i2c_atmel_read_status(struct tpm_chip *chip)
{
struct priv_data *priv = chip->vendor.priv;
- struct i2c_client *client = to_i2c_client(chip->dev);
+ struct i2c_client *client = to_i2c_client(chip->pdev);
int rc;

/* The TPM fails the I2C read until it is ready, so we do the entire
@@ -125,7 +125,7 @@ static u8 i2c_atmel_read_status(struct tpm_chip *chip)
/* Once the TPM has completed the command the command remains readable
* until another command is issued. */
rc = i2c_master_recv(client, priv->buffer, sizeof(priv->buffer));
- dev_dbg(chip->dev,
+ dev_dbg(chip->pdev,
"%s: sts=%d", __func__, rc);
if (rc <= 0)
return 0;
diff --git a/drivers/char/tpm/tpm_i2c_infineon.c b/drivers/char/tpm/tpm_i2c_infineon.c
index 03708e6..33c5f36 100644
--- a/drivers/char/tpm/tpm_i2c_infineon.c
+++ b/drivers/char/tpm/tpm_i2c_infineon.c
@@ -446,7 +446,7 @@ static int tpm_tis_i2c_recv(struct tpm_chip *chip, u8 *buf, size_t count)
/* read first 10 bytes, including tag, paramsize, and result */
size = recv_data(chip, buf, TPM_HEADER_SIZE);
if (size < TPM_HEADER_SIZE) {
- dev_err(chip->dev, "Unable to read header\n");
+ dev_err(chip->pdev, "Unable to read header\n");
goto out;
}

@@ -459,14 +459,14 @@ static int tpm_tis_i2c_recv(struct tpm_chip *chip, u8 *buf, size_t count)
size += recv_data(chip, &buf[TPM_HEADER_SIZE],
expected - TPM_HEADER_SIZE);
if (size < expected) {
- dev_err(chip->dev, "Unable to read remainder of result\n");
+ dev_err(chip->pdev, "Unable to read remainder of result\n");
size = -ETIME;
goto out;
}

wait_for_stat(chip, TPM_STS_VALID, chip->vendor.timeout_c, &status);
if (status & TPM_STS_DATA_AVAIL) { /* retry? */
- dev_err(chip->dev, "Error left over data\n");
+ dev_err(chip->pdev, "Error left over data\n");
size = -EIO;
goto out;
}
diff --git a/drivers/char/tpm/tpm_i2c_nuvoton.c b/drivers/char/tpm/tpm_i2c_nuvoton.c
index 09f0c46..92ee9fa 100644
--- a/drivers/char/tpm/tpm_i2c_nuvoton.c
+++ b/drivers/char/tpm/tpm_i2c_nuvoton.c
@@ -96,13 +96,13 @@ static s32 i2c_nuvoton_write_buf(struct i2c_client *client, u8 offset, u8 size,
/* read TPM_STS register */
static u8 i2c_nuvoton_read_status(struct tpm_chip *chip)
{
- struct i2c_client *client = to_i2c_client(chip->dev);
+ struct i2c_client *client = to_i2c_client(chip->pdev);
s32 status;
u8 data;

status = i2c_nuvoton_read_buf(client, TPM_STS, 1, &data);
if (status <= 0) {
- dev_err(chip->dev, "%s() error return %d\n", __func__,
+ dev_err(chip->pdev, "%s() error return %d\n", __func__,
status);
data = TPM_STS_ERR_VAL;
}
@@ -127,13 +127,13 @@ static s32 i2c_nuvoton_write_status(struct i2c_client *client, u8 data)
/* write commandReady to TPM_STS register */
static void i2c_nuvoton_ready(struct tpm_chip *chip)
{
- struct i2c_client *client = to_i2c_client(chip->dev);
+ struct i2c_client *client = to_i2c_client(chip->pdev);
s32 status;

/* this causes the current command to be aborted */
status = i2c_nuvoton_write_status(client, TPM_STS_COMMAND_READY);
if (status < 0)
- dev_err(chip->dev,
+ dev_err(chip->pdev,
"%s() fail to write TPM_STS.commandReady\n", __func__);
}

@@ -212,7 +212,7 @@ static int i2c_nuvoton_wait_for_stat(struct tpm_chip *chip, u8 mask, u8 value,
return 0;
} while (time_before(jiffies, stop));
}
- dev_err(chip->dev, "%s(%02x, %02x) -> timeout\n", __func__, mask,
+ dev_err(chip->pdev, "%s(%02x, %02x) -> timeout\n", __func__, mask,
value);
return -ETIMEDOUT;
}
@@ -240,7 +240,7 @@ static int i2c_nuvoton_recv_data(struct i2c_client *client,
&chip->vendor.read_queue) == 0) {
burst_count = i2c_nuvoton_get_burstcount(client, chip);
if (burst_count < 0) {
- dev_err(chip->dev,
+ dev_err(chip->pdev,
"%s() fail to read burstCount=%d\n", __func__,
burst_count);
return -EIO;
@@ -249,12 +249,12 @@ static int i2c_nuvoton_recv_data(struct i2c_client *client,
rc = i2c_nuvoton_read_buf(client, TPM_DATA_FIFO_R,
bytes2read, &buf[size]);
if (rc < 0) {
- dev_err(chip->dev,
+ dev_err(chip->pdev,
"%s() fail on i2c_nuvoton_read_buf()=%d\n",
__func__, rc);
return -EIO;
}
- dev_dbg(chip->dev, "%s(%d):", __func__, bytes2read);
+ dev_dbg(chip->pdev, "%s(%d):", __func__, bytes2read);
size += bytes2read;
}

@@ -264,7 +264,7 @@ static int i2c_nuvoton_recv_data(struct i2c_client *client,
/* Read TPM command results */
static int i2c_nuvoton_recv(struct tpm_chip *chip, u8 *buf, size_t count)
{
- struct device *dev = chip->dev;
+ struct device *dev = chip->pdev;
struct i2c_client *client = to_i2c_client(dev);
s32 rc;
int expected, status, burst_count, retries, size = 0;
@@ -334,7 +334,7 @@ static int i2c_nuvoton_recv(struct tpm_chip *chip, u8 *buf, size_t count)
break;
}
i2c_nuvoton_ready(chip);
- dev_dbg(chip->dev, "%s() -> %d\n", __func__, size);
+ dev_dbg(chip->pdev, "%s() -> %d\n", __func__, size);
return size;
}

@@ -347,7 +347,7 @@ static int i2c_nuvoton_recv(struct tpm_chip *chip, u8 *buf, size_t count)
*/
static int i2c_nuvoton_send(struct tpm_chip *chip, u8 *buf, size_t len)
{
- struct device *dev = chip->dev;
+ struct device *dev = chip->pdev;
struct i2c_client *client = to_i2c_client(dev);
u32 ordinal;
size_t count = 0;
diff --git a/drivers/char/tpm/tpm_i2c_stm_st33.c b/drivers/char/tpm/tpm_i2c_stm_st33.c
index b9d1a38..64ef510 100644
--- a/drivers/char/tpm/tpm_i2c_stm_st33.c
+++ b/drivers/char/tpm/tpm_i2c_stm_st33.c
@@ -544,7 +544,7 @@ static int tpm_stm_i2c_recv(struct tpm_chip *chip, unsigned char *buf,

size = recv_data(chip, buf, TPM_HEADER_SIZE);
if (size < TPM_HEADER_SIZE) {
- dev_err(chip->dev, "Unable to read header\n");
+ dev_err(chip->pdev, "Unable to read header\n");
goto out;
}

@@ -557,7 +557,7 @@ static int tpm_stm_i2c_recv(struct tpm_chip *chip, unsigned char *buf,
size += recv_data(chip, &buf[TPM_HEADER_SIZE],
expected - TPM_HEADER_SIZE);
if (size < expected) {
- dev_err(chip->dev, "Unable to read remainder of result\n");
+ dev_err(chip->pdev, "Unable to read remainder of result\n");
size = -ETIME;
goto out;
}
@@ -671,7 +671,7 @@ tpm_st33_i2c_probe(struct i2c_client *client, const struct i2c_device_id *id)
IRQF_TRIGGER_HIGH,
"TPM SERIRQ management", chip);
if (err < 0) {
- dev_err(chip->dev , "TPM SERIRQ signals %d not available\n",
+ dev_err(chip->pdev , "TPM SERIRQ signals %d not available\n",
gpio_to_irq(platform_data->io_serirq));
goto _irq_set;
}
diff --git a/drivers/char/tpm/tpm_infineon.c b/drivers/char/tpm/tpm_infineon.c
index dcdb671..6d49213 100644
--- a/drivers/char/tpm/tpm_infineon.c
+++ b/drivers/char/tpm/tpm_infineon.c
@@ -195,9 +195,9 @@ static int wait(struct tpm_chip *chip, int wait_for_bit)
}
if (i == TPM_MAX_TRIES) { /* timeout occurs */
if (wait_for_bit == STAT_XFE)
- dev_err(chip->dev, "Timeout in wait(STAT_XFE)\n");
+ dev_err(chip->pdev, "Timeout in wait(STAT_XFE)\n");
if (wait_for_bit == STAT_RDA)
- dev_err(chip->dev, "Timeout in wait(STAT_RDA)\n");
+ dev_err(chip->pdev, "Timeout in wait(STAT_RDA)\n");
return -EIO;
}
return 0;
@@ -220,7 +220,7 @@ static void wait_and_send(struct tpm_chip *chip, u8 sendbyte)
static void tpm_wtx(struct tpm_chip *chip)
{
number_of_wtx++;
- dev_info(chip->dev, "Granting WTX (%02d / %02d)\n",
+ dev_info(chip->pdev, "Granting WTX (%02d / %02d)\n",
number_of_wtx, TPM_MAX_WTX_PACKAGES);
wait_and_send(chip, TPM_VL_VER);
wait_and_send(chip, TPM_CTRL_WTX);
@@ -231,7 +231,7 @@ static void tpm_wtx(struct tpm_chip *chip)

static void tpm_wtx_abort(struct tpm_chip *chip)
{
- dev_info(chip->dev, "Aborting WTX\n");
+ dev_info(chip->pdev, "Aborting WTX\n");
wait_and_send(chip, TPM_VL_VER);
wait_and_send(chip, TPM_CTRL_WTX_ABORT);
wait_and_send(chip, 0x00);
@@ -257,7 +257,7 @@ recv_begin:
}

if (buf[0] != TPM_VL_VER) {
- dev_err(chip->dev,
+ dev_err(chip->pdev,
"Wrong transport protocol implementation!\n");
return -EIO;
}
@@ -272,7 +272,7 @@ recv_begin:
}

if ((size == 0x6D00) && (buf[1] == 0x80)) {
- dev_err(chip->dev, "Error handling on vendor layer!\n");
+ dev_err(chip->pdev, "Error handling on vendor layer!\n");
return -EIO;
}

@@ -284,7 +284,7 @@ recv_begin:
}

if (buf[1] == TPM_CTRL_WTX) {
- dev_info(chip->dev, "WTX-package received\n");
+ dev_info(chip->pdev, "WTX-package received\n");
if (number_of_wtx < TPM_MAX_WTX_PACKAGES) {
tpm_wtx(chip);
goto recv_begin;
@@ -295,14 +295,14 @@ recv_begin:
}

if (buf[1] == TPM_CTRL_WTX_ABORT_ACK) {
- dev_info(chip->dev, "WTX-abort acknowledged\n");
+ dev_info(chip->pdev, "WTX-abort acknowledged\n");
return size;
}

if (buf[1] == TPM_CTRL_ERROR) {
- dev_err(chip->dev, "ERROR-package received:\n");
+ dev_err(chip->pdev, "ERROR-package received:\n");
if (buf[4] == TPM_INF_NAK)
- dev_err(chip->dev,
+ dev_err(chip->pdev,
"-> Negative acknowledgement"
" - retransmit command!\n");
return -EIO;
@@ -321,7 +321,7 @@ static int tpm_inf_send(struct tpm_chip *chip, u8 * buf, size_t count)

ret = empty_fifo(chip, 1);
if (ret) {
- dev_err(chip->dev, "Timeout while clearing FIFO\n");
+ dev_err(chip->pdev, "Timeout while clearing FIFO\n");
return -EIO;
}

diff --git a/drivers/char/tpm/tpm_nsc.c b/drivers/char/tpm/tpm_nsc.c
index 00c5470..072c298 100644
--- a/drivers/char/tpm/tpm_nsc.c
+++ b/drivers/char/tpm/tpm_nsc.c
@@ -113,7 +113,7 @@ static int nsc_wait_for_ready(struct tpm_chip *chip)
}
while (time_before(jiffies, stop));

- dev_info(chip->dev, "wait for ready failed\n");
+ dev_info(chip->pdev, "wait for ready failed\n");
return -EBUSY;
}

@@ -129,12 +129,12 @@ static int tpm_nsc_recv(struct tpm_chip *chip, u8 * buf, size_t count)
return -EIO;

if (wait_for_stat(chip, NSC_STATUS_F0, NSC_STATUS_F0, &data) < 0) {
- dev_err(chip->dev, "F0 timeout\n");
+ dev_err(chip->pdev, "F0 timeout\n");
return -EIO;
}
if ((data =
inb(chip->vendor.base + NSC_DATA)) != NSC_COMMAND_NORMAL) {
- dev_err(chip->dev, "not in normal mode (0x%x)\n",
+ dev_err(chip->pdev, "not in normal mode (0x%x)\n",
data);
return -EIO;
}
@@ -143,7 +143,7 @@ static int tpm_nsc_recv(struct tpm_chip *chip, u8 * buf, size_t count)
for (p = buffer; p < &buffer[count]; p++) {
if (wait_for_stat
(chip, NSC_STATUS_OBF, NSC_STATUS_OBF, &data) < 0) {
- dev_err(chip->dev,
+ dev_err(chip->pdev,
"OBF timeout (while reading data)\n");
return -EIO;
}
@@ -154,11 +154,11 @@ static int tpm_nsc_recv(struct tpm_chip *chip, u8 * buf, size_t count)

if ((data & NSC_STATUS_F0) == 0 &&
(wait_for_stat(chip, NSC_STATUS_F0, NSC_STATUS_F0, &data) < 0)) {
- dev_err(chip->dev, "F0 not set\n");
+ dev_err(chip->pdev, "F0 not set\n");
return -EIO;
}
if ((data = inb(chip->vendor.base + NSC_DATA)) != NSC_COMMAND_EOC) {
- dev_err(chip->dev,
+ dev_err(chip->pdev,
"expected end of command(0x%x)\n", data);
return -EIO;
}
@@ -189,19 +189,19 @@ static int tpm_nsc_send(struct tpm_chip *chip, u8 * buf, size_t count)
return -EIO;

if (wait_for_stat(chip, NSC_STATUS_IBF, 0, &data) < 0) {
- dev_err(chip->dev, "IBF timeout\n");
+ dev_err(chip->pdev, "IBF timeout\n");
return -EIO;
}

outb(NSC_COMMAND_NORMAL, chip->vendor.base + NSC_COMMAND);
if (wait_for_stat(chip, NSC_STATUS_IBR, NSC_STATUS_IBR, &data) < 0) {
- dev_err(chip->dev, "IBR timeout\n");
+ dev_err(chip->pdev, "IBR timeout\n");
return -EIO;
}

for (i = 0; i < count; i++) {
if (wait_for_stat(chip, NSC_STATUS_IBF, 0, &data) < 0) {
- dev_err(chip->dev,
+ dev_err(chip->pdev,
"IBF timeout (while writing data)\n");
return -EIO;
}
@@ -209,7 +209,7 @@ static int tpm_nsc_send(struct tpm_chip *chip, u8 * buf, size_t count)
}

if (wait_for_stat(chip, NSC_STATUS_IBF, 0, &data) < 0) {
- dev_err(chip->dev, "IBF timeout\n");
+ dev_err(chip->pdev, "IBF timeout\n");
return -EIO;
}
outb(NSC_COMMAND_EOC, chip->vendor.base + NSC_COMMAND);
diff --git a/drivers/char/tpm/tpm_ppi.c b/drivers/char/tpm/tpm_ppi.c
index 6acdb17..659de61 100644
--- a/drivers/char/tpm/tpm_ppi.c
+++ b/drivers/char/tpm/tpm_ppi.c
@@ -358,11 +358,11 @@ int tpm_add_ppi(struct tpm_chip *chip)

ACPI_FREE(obj);

- return sysfs_create_group(&chip->dev->kobj, &ppi_attr_grp);
+ return sysfs_create_group(&chip->pdev->kobj, &ppi_attr_grp);
}

void tpm_remove_ppi(struct tpm_chip *chip)
{
if (chip->ppi_version[0] != '\0')
- sysfs_remove_group(&chip->dev->kobj, &ppi_attr_grp);
+ sysfs_remove_group(&chip->pdev->kobj, &ppi_attr_grp);
}
diff --git a/drivers/char/tpm/tpm_tis.c b/drivers/char/tpm/tpm_tis.c
index 4d4bff1..66780ba 100644
--- a/drivers/char/tpm/tpm_tis.c
+++ b/drivers/char/tpm/tpm_tis.c
@@ -244,7 +244,7 @@ static int tpm_tis_recv(struct tpm_chip *chip, u8 *buf, size_t count)
/* 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");
+ dev_err(chip->pdev, "Unable to read header\n");
goto out;
}

@@ -257,7 +257,7 @@ static int tpm_tis_recv(struct tpm_chip *chip, u8 *buf, size_t count)
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");
+ dev_err(chip->pdev, "Unable to read remainder of result\n");
size = -ETIME;
goto out;
}
@@ -266,7 +266,7 @@ static int tpm_tis_recv(struct tpm_chip *chip, u8 *buf, size_t count)
&chip->vendor.int_queue, false);
status = tpm_tis_status(chip);
if (status & TPM_STS_DATA_AVAIL) { /* retry? */
- dev_err(chip->dev, "Error left over data\n");
+ dev_err(chip->pdev, "Error left over data\n");
size = -EIO;
goto out;
}
@@ -445,7 +445,7 @@ static int probe_itpm(struct tpm_chip *chip)

rc = tpm_tis_send_data(chip, cmd_getticks, len);
if (rc == 0) {
- dev_info(chip->dev, "Detected an iTPM.\n");
+ dev_info(chip->pdev, "Detected an iTPM.\n");
rc = 1;
} else
rc = -EFAULT;
@@ -696,7 +696,7 @@ static int tpm_tis_init(struct device *dev, acpi_handle acpi_dev_handle,
if (devm_request_irq
(dev, i, tis_int_probe, IRQF_SHARED,
chip->vendor.miscdev.name, chip) != 0) {
- dev_info(chip->dev,
+ dev_info(chip->pdev,
"Unable to request irq: %d for probe\n",
i);
continue;
@@ -746,7 +746,7 @@ static int tpm_tis_init(struct device *dev, acpi_handle acpi_dev_handle,
if (devm_request_irq
(dev, chip->vendor.irq, tis_int_handler, IRQF_SHARED,
chip->vendor.miscdev.name, chip) != 0) {
- dev_info(chip->dev,
+ dev_info(chip->pdev,
"Unable to request irq: %d for use\n",
chip->vendor.irq);
chip->vendor.irq = 0;
--
2.1.0

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