On Fri, Jun 24, 2016 at 12:14:37PM -0600, Jason Gunthorpe wrote: > On Wed, Jun 22, 2016 at 03:22:28PM +0300, Jarkko Sakkinen wrote: > > The patch set used TPM2_OPS_PROBE_TPM2 only for nuvoton driver. The more > > recent one used it incorrectly with tpm_tis. > > What do you think of this approach? > > https://github.com/jgunthorpe/linux/commits/for-andrew > > Andrew, does this work for you? This would work for me. /Jarkko > From 73b0f273285ed512a259aa536968175fb14c3450 Mon Sep 17 00:00:00 2001 > From: Jason Gunthorpe <jgunthorpe@xxxxxxxxxxxxxxxxxxxx> > Date: Fri, 24 Jun 2016 12:13:02 -0600 > Subject: [PATCH 2/2] tpm: Add TPM 2.0 support to the Nuvoton i2c driver > (NPCT6xx family) > > The command flow is exactly the same, the core simply needs to be > told to enable TPM2 mode when the compatible string indicates a > TPM2. > > Signed-off-by: Andrew Azmansky <andrew.zamansky@xxxxxxxxxxx> > Signed-off-by: Jason Gunthorpe <jgunthorpe@xxxxxxxxxxxxxxxxxxxx> > Acked-by: Rob Herring <robh@xxxxxxxxxx> > --- > Documentation/devicetree/bindings/i2c/trivial-devices.txt | 1 + > drivers/char/tpm/tpm_i2c_nuvoton.c | 13 +++++++++++-- > 2 files changed, 12 insertions(+), 2 deletions(-) > > diff --git a/Documentation/devicetree/bindings/i2c/trivial-devices.txt b/Documentation/devicetree/bindings/i2c/trivial-devices.txt > index 539874490492..d4f654276cf9 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 b64effcf3235..2bb6ac9a2695 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 > * > @@ -31,6 +31,7 @@ > #include <linux/interrupt.h> > #include <linux/wait.h> > #include <linux/i2c.h> > +#include <linux/of_device.h> > #include "tpm.h" > > /* I2C interface offsets */ > @@ -54,6 +55,8 @@ > > #define I2C_DRIVER_NAME "tpm_i2c_nuvoton" > > +#define OF_IS_TPM2 ((void *)1) > + > struct priv_data { > unsigned int intrs; > }; > @@ -163,7 +166,7 @@ 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 > */ > @@ -522,6 +525,7 @@ static int i2c_nuvoton_probe(struct i2c_client *client, > int rc; > struct tpm_chip *chip; > struct device *dev = &client->dev; > + const struct of_device_id *match; > u32 vid = 0; > > rc = get_vid(client, &vid); > @@ -535,6 +539,10 @@ static int i2c_nuvoton_probe(struct i2c_client *client, > if (IS_ERR(chip)) > return PTR_ERR(chip); > > + match = of_match_device(dev->driver->of_device_id, dev); > + if (match && match->data == OF_IS_TPM2) > + chip->flags |= TPM_CHIP_FLAG_TPM2; > + > chip->vendor.priv = devm_kzalloc(dev, sizeof(struct priv_data), > GFP_KERNEL); > if (!chip->vendor.priv) > @@ -623,6 +631,7 @@ 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", .data = OF_IS_TPM2}, > {}, > }; > MODULE_DEVICE_TABLE(of, i2c_nuvoton_of_match); > -- > 2.1.4 > -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
