From: Alexander Steffen <Alexander.Steffen@xxxxxxxxxxxx>
Only tpm_tis and tpm_tis_synquacer have a dedicated way to access
multiple bytes at once, every other driver will just fall back to
read_bytes/write_bytes. Therefore, move this common code out of
tpm_tis_spi_main and tpm_tis_spi_cr50 into tpm_tis_core, so that it is
automatically used when low-level drivers do not implement the
specialized methods.
Signed-off-by: Alexander Steffen <Alexander.Steffen@xxxxxxxxxxxx>
Signed-off-by: Johannes Holland <johannes.holland@xxxxxxxxxxxx>
---
drivers/char/tpm/tpm_tis_core.h | 37 +++++++++++++++++++++++---
drivers/char/tpm/tpm_tis_spi.h | 4 ---
drivers/char/tpm/tpm_tis_spi_cr50.c | 3 ---
drivers/char/tpm/tpm_tis_spi_main.c | 41 -----------------------------
4 files changed, 34 insertions(+), 51 deletions(-)
diff --git a/drivers/char/tpm/tpm_tis_core.h b/drivers/char/tpm/tpm_tis_core.h
index 3be24f221e32..a1feff9d6c1f 100644
--- a/drivers/char/tpm/tpm_tis_core.h
+++ b/drivers/char/tpm/tpm_tis_core.h
@@ -128,13 +128,35 @@ static inline int tpm_tis_read8(struct tpm_tis_data *data, u32 addr, u8 *result)
static inline int tpm_tis_read16(struct tpm_tis_data *data, u32 addr,
u16 *result)
{
- return data->phy_ops->read16(data, addr, result);
+ __le16 result_le;
+ int rc;
+
+ if (data->phy_ops->read16)
+ return data->phy_ops->read16(data, addr, result);
+
+ rc = data->phy_ops->read_bytes(data, addr, sizeof(u16),
+ (u8 *)&result_le);
+ if (!rc)
+ *result = le16_to_cpu(result_le);
+
+ return rc;
}
static inline int tpm_tis_read32(struct tpm_tis_data *data, u32 addr,
u32 *result)
{
- return data->phy_ops->read32(data, addr, result);
+ __le32 result_le;
+ int rc;
+
+ if (data->phy_ops->read32)
+ return data->phy_ops->read32(data, addr, result);
+
+ rc = data->phy_ops->read_bytes(data, addr, sizeof(u32),
+ (u8 *)&result_le);
+ if (!rc)
+ *result = le32_to_cpu(result_le);
+
+ return rc;
}
static inline int tpm_tis_write_bytes(struct tpm_tis_data *data, u32 addr,
@@ -151,7 +173,16 @@ static inline int tpm_tis_write8(struct tpm_tis_data *data, u32 addr, u8 value)
static inline int tpm_tis_write32(struct tpm_tis_data *data, u32 addr,
u32 value)
{
- return data->phy_ops->write32(data, addr, value);
+ __le32 value_le;
+ int rc;
+
+ if (data->phy_ops->write32)
+ return data->phy_ops->write32(data, addr, value);
+
+ value_le = cpu_to_le32(value);
+ rc = data->phy_ops->write_bytes(data, addr, sizeof(u32),
+ (u8 *)&value_le);
+ return rc;
}
static inline bool is_bsw(void)
diff --git a/drivers/char/tpm/tpm_tis_spi.h b/drivers/char/tpm/tpm_tis_spi.h
index bba73979c368..d0f66f6f1931 100644
--- a/drivers/char/tpm/tpm_tis_spi.h
+++ b/drivers/char/tpm/tpm_tis_spi.h
@@ -31,10 +31,6 @@ extern int tpm_tis_spi_init(struct spi_device *spi, struct tpm_tis_spi_phy *phy,
extern int tpm_tis_spi_transfer(struct tpm_tis_data *data, u32 addr, u16 len,
u8 *in, const u8 *out);
-extern int tpm_tis_spi_read16(struct tpm_tis_data *data, u32 addr, u16 *result);
-extern int tpm_tis_spi_read32(struct tpm_tis_data *data, u32 addr, u32 *result);
-extern int tpm_tis_spi_write32(struct tpm_tis_data *data, u32 addr, u32 value);
-
#ifdef CONFIG_TCG_TIS_SPI_CR50
extern int cr50_spi_probe(struct spi_device *spi);
#else
diff --git a/drivers/char/tpm/tpm_tis_spi_cr50.c b/drivers/char/tpm/tpm_tis_spi_cr50.c
index 7bf123d3c537..9584856d955d 100644
--- a/drivers/char/tpm/tpm_tis_spi_cr50.c
+++ b/drivers/char/tpm/tpm_tis_spi_cr50.c
@@ -236,9 +236,6 @@ static int tpm_tis_spi_cr50_write_bytes(struct tpm_tis_data *data, u32 addr,
static const struct tpm_tis_phy_ops tpm_spi_cr50_phy_ops = {
.read_bytes = tpm_tis_spi_cr50_read_bytes,
.write_bytes = tpm_tis_spi_cr50_write_bytes,
- .read16 = tpm_tis_spi_read16,
- .read32 = tpm_tis_spi_read32,
- .write32 = tpm_tis_spi_write32,
};
static void cr50_print_fw_version(struct tpm_tis_data *data)
diff --git a/drivers/char/tpm/tpm_tis_spi_main.c b/drivers/char/tpm/tpm_tis_spi_main.c
index aaa59a00eeae..f9e937c79c59 100644
--- a/drivers/char/tpm/tpm_tis_spi_main.c
+++ b/drivers/char/tpm/tpm_tis_spi_main.c
@@ -152,44 +152,6 @@ static int tpm_tis_spi_write_bytes(struct tpm_tis_data *data, u32 addr,
return tpm_tis_spi_transfer(data, addr, len, NULL, value);
}
-int tpm_tis_spi_read16(struct tpm_tis_data *data, u32 addr, u16 *result)
-{
- __le16 result_le;
- int rc;
-
- rc = data->phy_ops->read_bytes(data, addr, sizeof(u16),
- (u8 *)&result_le);
- if (!rc)
- *result = le16_to_cpu(result_le);
-
- return rc;
-}
-
-int tpm_tis_spi_read32(struct tpm_tis_data *data, u32 addr, u32 *result)
-{
- __le32 result_le;
- int rc;
-
- rc = data->phy_ops->read_bytes(data, addr, sizeof(u32),
- (u8 *)&result_le);
- if (!rc)
- *result = le32_to_cpu(result_le);
-
- return rc;
-}
-
-int tpm_tis_spi_write32(struct tpm_tis_data *data, u32 addr, u32 value)
-{
- __le32 value_le;
- int rc;
-
- value_le = cpu_to_le32(value);
- rc = data->phy_ops->write_bytes(data, addr, sizeof(u32),
- (u8 *)&value_le);
-
- return rc;
-}
-
int tpm_tis_spi_init(struct spi_device *spi, struct tpm_tis_spi_phy *phy,
int irq, const struct tpm_tis_phy_ops *phy_ops)
{
@@ -205,9 +167,6 @@ int tpm_tis_spi_init(struct spi_device *spi, struct tpm_tis_spi_phy *phy,
static const struct tpm_tis_phy_ops tpm_spi_phy_ops = {
.read_bytes = tpm_tis_spi_read_bytes,
.write_bytes = tpm_tis_spi_write_bytes,
- .read16 = tpm_tis_spi_read16,
- .read32 = tpm_tis_spi_read32,
- .write32 = tpm_tis_spi_write32,
};
static int tpm_tis_spi_probe(struct spi_device *dev)
--
2.31.1.windows.1
