[PATCH 2/4 v2] tpm: Add TPM 2.0 support to the Nuvoton i2c driver (NPCT6xx family)
From: andrew zamansky <hidden>
Date: 2016-06-20 10:07:07
Subsystem:
i2c subsystem host drivers, open firmware and flattened device tree bindings, the rest, tpm device driver · Maintainers:
Andi Shyti, Rob Herring, Krzysztof Kozlowski, Conor Dooley, Linus Torvalds, Peter Huewe, Jarkko Sakkinen
From: Jason Gunthorpe <redacted> The command flow is exactly the same, the core simply needs to probe for TPM 2.0 capability. Signed-off-by: Andrew Azmansky <redacted> Signed-off-by: Jason Gunthorpe <redacted> --- Documentation/devicetree/bindings/i2c/trivial-devices.txt | 1 + drivers/char/tpm/tpm_i2c_nuvoton.c | 7 ++++--- 2 files changed, 5 insertions(+), 3 deletions(-)
diff --git a/Documentation/devicetree/bindings/i2c/trivial-devices.txt b/Documentation/devicetree/bindings/i2c/trivial-devices.txt
index 53987449..d4f6542 100644
--- a/Documentation/devicetree/bindings/i2c/trivial-devices.txt
+++ b/Documentation/devicetree/bindings/i2c/trivial-devices.txt@@ -62,6 +62,7 @@ national,lm80 Serial Interface ACPI-Compatible Microprocessor System Hardware M national,lm85 Temperature sensor with integrated fan control national,lm92 ±0.33°C Accurate, 12-Bit + Sign Temperature Sensor and Thermal Window Comparator with Two-Wire Interface nuvoton,npct501 i2c trusted platform module (TPM) +nuvoton,npct601 i2c trusted platform module (TPM2) nxp,pca9556 Octal SMBus and I2C registered interface nxp,pca9557 8-bit I2C-bus and SMBus I/O port with reset nxp,pcf8563 Real-time clock/calendar
diff --git a/drivers/char/tpm/tpm_i2c_nuvoton.c b/drivers/char/tpm/tpm_i2c_nuvoton.c
index b64effc..dbf6095 100644
--- a/drivers/char/tpm/tpm_i2c_nuvoton.c
+++ b/drivers/char/tpm/tpm_i2c_nuvoton.c@@ -1,5 +1,5 @@ /****************************************************************************** - * Nuvoton TPM I2C Device Driver Interface for WPCT301/NPCT501, + * Nuvoton TPM I2C Device Driver Interface for WPCT301/NPCT501/NPCT6XX, * based on the TCG TPM Interface Spec version 1.2. * Specifications at www.trustedcomputinggroup.org *
@@ -163,7 +163,7 @@ static int i2c_nuvoton_get_burstcount(struct i2c_client *client, } /* - * WPCT301/NPCT501 SINT# supports only dataAvail + * WPCT301/NPCT501/NPCT6XX SINT# supports only dataAvail * any call to this function which is not waiting for dataAvail will * set queue to NULL to avoid waiting for interrupt */
@@ -456,7 +456,7 @@ static bool i2c_nuvoton_req_canceled(struct tpm_chip *chip, u8 status) } static const struct tpm_class_ops tpm_i2c = { - .flags = TPM_OPS_AUTO_STARTUP, + .flags = TPM_OPS_AUTO_STARTUP | TPM_OPS_PROBE_TPM2, .status = i2c_nuvoton_read_status, .recv = i2c_nuvoton_recv, .send = i2c_nuvoton_send,
@@ -623,6 +623,7 @@ MODULE_DEVICE_TABLE(i2c, i2c_nuvoton_id); static const struct of_device_id i2c_nuvoton_of_match[] = { {.compatible = "nuvoton,npct501"}, {.compatible = "winbond,wpct301"}, + {.compatible = "nuvoton,npct601"}, {}, }; MODULE_DEVICE_TABLE(of, i2c_nuvoton_of_match);
--
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